CN105096887A - Pixel structure, display panel, display apparatus and driving method - Google Patents

Abstract

The invention discloses a pixel structure. The pixel structure comprises multiple first pixel points, the first pixel points form a 2*2 sub-pixel unit matrix, the first pixel points comprise first sub-pixel units, second sub-pixel units, third sub-pixel units and fourth sub-pixel units which are arranged according to a clockwise direction; the first sub-pixel units and the third sub-pixel units each comprise first sub-pixels and second sub-pixels, and the arrangement modes of the first sub-pixels and the second sub-pixels in the first sub-pixel units and the third sub-pixel units are the same; the first sub-pixels and the second sub-pixels are right angled triangles; the second sub-pixel units and the fourth sub-pixel units each comprise third sub-pixels and fourth sub-pixels, and the arrangement modes of the third sub-pixels and the fourth sub-pixels in the second sub-pixel units and the fourth sub-pixel units are the same; and the third sub-pixels and the fourth sub-pixels are right angled triangles. The display brightness is enabled to be more uniform, the aperture ratio is improved by 28%, and the display effect is better.

Description

A kind of dot structure, display panel, display device and driving method

Technical field

The application relates to electronic technology field, is specifically related to display technique field, particularly relates to a kind of dot structure, comprises the display panel of described dot structure and comprise the display device of described display panel and be applied to the driving method of described display device

Background technology

At traditional RealRGB (RealRedGreenBlue, true look turquoise) in the colour display device of pattern, the sub-pixel an of pixel of the dot structure of its display panel (shown in Fig. 1) generally comprises shape to be long edge lengths a1 and bond length b1 the be redness (R) of the rectangle of 3:1, green (G), blueness (B) three different colours, by controlling the size of the three kind color components such as R, G, B corresponding respectively with the sub-pixel of three on certain pixel, the color shown by this pixel and brightness can be controlled.Along with the requirement of people to image quality is more and more higher, the quantity (PPI) of the pixel of the unit area of display panel also gets more and more.But the transmittance of each pixel (TR%) but declines along with increasing of PPI, therefore, have employed an increase shape on the basis of RealRGB pattern is that the white sub-pixels of rectangle is to reach the requirement of high transmission rate, such display mode is called RGBW (RedGreenBlueWhite, red, green, blue and white) pattern, in RGBW pattern, as shown in Figure 2, the long edge lengths a2 of each sub-pixel is 4:1 with the ratio of bond length b2, that is, in RGBW pattern, the width of each sub-pixel decreases 1/4 than three primary colours pattern sub pixel width, the data line of sub-pixel adds 1/3 in addition, spacing between pixel is also more and more thinner, technology difficulty is strengthened.In addition, in RGBW pattern as shown in Figure 2, white sub-pixels forms a line, and because its transmittance is very high, is easy to cause panel occurring perpendicular bright rays, makes picture even not.

Summary of the invention

The object of the application be to propose a kind of improvement dot structure, comprise described dot structure display panel and comprise the display device of described display panel and be applied to the driving method of described display device, thus solve at least one technical matters as above.。

On the one hand, this application provides a kind of dot structure, described dot structure, comprise multiple first pixel, described first pixel is 2 × 2 sub-pixel unit matrixes, and described first pixel comprises the first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit and the 4th sub-pixel unit that arrange according to clockwise direction;

Described first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit are the identical rectangle of shape with the 4th sub-pixel unit,

Described first sub-pixel unit and described 3rd sub-pixel unit include the first sub-pixel and the second sub-pixel, and described first sub-pixel unit is all identical with the arrangement mode of described second sub-pixel with described first sub-pixel in described 3rd sub-pixel unit; Described first sub-pixel and described second sub-pixel are right-angle triangle;

Described second sub-pixel unit and described 4th sub-pixel unit include the 3rd sub-pixel and the 4th sub-pixel, and described second sub-pixel unit is all identical with the arrangement mode of described 4th sub-pixel with described 3rd sub-pixel in described 4th sub-pixel unit; Described 3rd sub-pixel and described 4th sub-pixel are right-angle triangle.

Optionally, described first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit and the 4th sub-pixel unit are as square.

Optionally, the length breadth ratio of described first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit and the 4th sub-pixel list is 2:1.

Optionally, the color of described first sub-pixel, the second sub-pixel, the 3rd sub-picture and the 4th sub-pixel is different

Further alternative, the color of described first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel is any one in red sub-pixel, green sub-pixels, blue subpixels and white sub-pixels.

Second aspect, the application also provides a kind of display panel, comprises described dot structure.

The third aspect, the application also provides a kind of display device, comprises described display panel.

Fourth aspect, this application provides the driving method of described display device, described method comprises: the color of described first sub-pixel is the first color, the color of described second sub-pixel is the second color, the color of described 3rd sub-pixel is the 3rd color, and the color of described 4th sub-pixel is the 4th color; Described display device comprises control chip, and described control chip comprises the first signal processing part and secondary signal handling part;

Described control chip receives the first display picture data of described display panel, and described first display picture data comprises the first brightness value of the first color, the second color and the 3rd color sub-pixels; Described first display picture data obtains the second display picture data through the described first signal processing part conversion of described control chip, and described second display picture data comprises the second brightness value of the first color, the second color, the 3rd color and the 4th color sub-pixels; Described second display picture data converts through the described secondary signal handling part of described control chip and obtains the brightness data of described first pixel sub-pixel, and the brightness data of the sub-pixel of described first pixel exports to described display panel by described control chip.

The dot structure that the application provides, display panel and display device and driving method, sub-pixel shape is designed to right-angle triangle, and the sub-pixel area of the area ratio RGBW of sub-pixel increases, aperture opening ratio can be improved, data line reduces, and Pixel Dimensions increases, and reduces technology difficulty.Join end to end with sub-pixels and sub-pixel area is larger than RGBW sub-pixel area, when showing monochromatic oblique line, continuity is better, meanwhile, white sub-pixels dispersed arrangement, compared with existing RGBW technology, there will not be the phenomenon of perpendicular bright fringes, make brightness more even respectively.

Accompanying drawing explanation

By reading the detailed description done non-limiting example done with reference to the following drawings, the other features, objects and advantages of the application will become more obvious:

Fig. 1 is the schematic diagram of RealRGB structure;

Fig. 2 is the schematic diagram of the dot structure of a kind of RGBW pattern of the prior art;

Fig. 3 is the schematic diagram of the embodiment one of the application's dot structure;

Fig. 3 a arranges schematic diagram according to the application's dot structure embodiment one sub-pixel along direction D1 and D2;

Fig. 3 b is the schematic diagram that the application's dot structure embodiment one shows pure color oblique line;

Fig. 4 is schematic diagram according to the application's dot structure embodiment two and brightness central distribution;

Fig. 5 is the process flow diagram of an embodiment of the driving method method of the application's display device;

Fig. 6 a is display unit and the brightness central distribution schematic diagram of the first display picture data in the application;

Fig. 6 b is the display unit distribution schematic diagram of the second display picture data in the application;

Fig. 6 c is pixel and the brightness central distribution schematic diagram of the embodiment of the present application one.

Embodiment

Below in conjunction with drawings and Examples, the application is described in further detail.Be understandable that, specific embodiment described herein is only for explaining related invention, but not the restriction to this invention.It also should be noted that, for convenience of description, in accompanying drawing, illustrate only the part relevant to Invention.

It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the application in detail in conjunction with the embodiments.

Embodiment one

Please refer to Fig. 3, it is the schematic diagram of the embodiment one of the dot structure of the application.As shown in the figure, the first pixel 31, first pixel that dot structure 30 comprises repeated arrangement comprises according to the first sub-pixel unit 311, second sub-pixel unit 312 of clockwise direction arrangement, the 3rd sub-pixel unit 313 and the 4th sub-pixel unit 314.

First sub-pixel unit 311 and the 3rd sub-pixel unit 313 comprise the first sub-pixel A and the second sub-pixel B, first sub-pixel A is identical with at the arrangement mode of the 3rd sub-pixel list 313 yuan at the arrangement mode of the first sub-pixel unit 311 with the second sub-pixel B, that is the position of the first sub-pixel A in the first sub-pixel unit 311 is identical with the position in the 3rd sub-pixel unit 313, and the position of the second sub-pixel B in the first sub-pixel unit 311 is identical with the position in the 3rd sub-pixel unit 313.Second sub-pixel unit 312 and the 4th sub-pixel unit 314 comprise the 3rd sub-pixel C and the 4th sub-pixel D, 3rd sub-pixel C is identical with at the arrangement mode of the 4th sub-pixel unit 314 at the arrangement mode of the second sub-pixel unit 312 with the 4th sub-pixel D, that is the position of the 3rd sub-pixel C in the second sub-pixel unit 312 is identical with the position in the 4th sub-pixel unit 314, and the position of the second sub-pixel D in the second sub-pixel unit 312 is identical with the position in the 4th sub-pixel unit 314.

The shape of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel B and the 4th sub-pixel D is isosceles right triangle, and the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D are congruent, that is, two right-angle side appearance etc. of any one sub-pixel in the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D, and the right-angle side appearance etc. between different subpixel, the right angle length of side of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D can be designated as a3.Like this, the square of the first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit and the 4th sub-pixel unit to be all the length of side be a3.

In an optional implementation of the present embodiment, the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D are the mutually different sub-pixel of color.That is, the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D are four kinds of different colors.Usually, being added with different ratios of these four kinds of different colours, can produce various color.Alternatively, the color of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D is respectively the one in red, blue, green or white.Particularly, the color of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel can be respectively that red, green, blue and white, red bluish-green white, turquoise red white, green red indigo plant are white, green white, bluish-green red white, the combination such as Bai Hong is bluish-green, Bai Hong is bluish-green of Lan Hong.Certainly it will be understood by those skilled in the art that sub-pixel can also be other color in actual applications, will not enumerate here.

In an optional implementation of the present embodiment, the length a2 of the sub-pixel of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the right angle length of side a3 of the 4th sub-pixel D and the RGBW structure shown in Fig. 2 is equal, compared with Fig. 2, adopt the dot structure of this embodiment, sub-pixel quantity reduces 1/2, data line can reduce 1/2, and coordinate the driving method comprising the display device of this dot structure to drive dot structure 30, the display effect of the PPI identical with the ordinary display panel shown in Fig. 1 can be realized.Pixel Dimensions increases, and reduces technology difficulty.

Simultaneously, the area of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D is 2 times of RGBW structure sub-pixels area as shown in Figure 2, the aperture opening ratio simulation value of the sub-pixel of the RGBW structure shown in Fig. 2 is 47.83%, the aperture opening ratio simulation value of the sub-pixel of the present embodiment is 61.23%, therefore the aperture opening ratio that the aperture opening ratio of the sub-pixel of the present embodiment compares the sub-pixel of the RGBW structure shown in Fig. 2 improves 28%.

In the present embodiment, as shown in Figure 3 a, join end to end on D1 or D2 of direction with sub-pixels, free of discontinuities when then showing the oblique line of this color in the direction in which, the first sub-pixel A such as shown in Fig. 3 a joins end to end on D2 direction, then when showing the oblique line on D2 direction homochromy with the first sub-pixel A, as shown in Fig. 3 b 301, oblique line links up free of discontinuities, there will not be the problem of color border, and the RGBW of prior art is discontinuous when showing monochrome sub-pixels on D1 and D2 direction, as shown in 302 and 304 in Fig. 3 b, has interruption.When sub-pixel has interval on D1 or D2 of direction, the first sub-pixel A such as, in Fig. 3 b shown in 303 has interruption on D1 direction, because the sub-pixel area of the dot structure of the present embodiment is larger than the area of the sub-pixel of the RGBW structure shown in Fig. 2, therefore better than the continuity in the RGBW shown in Fig. 2 on D1 or D2 direction when showing monochromatic straight line, color control is more accurate simultaneously, acutance is higher, can realize good display effect.

In the present embodiment, each sub-pixel staggers arrangement, sub-pixel corresponding to white also staggers arrangement accordingly, adopt the display device of the present embodiment dot structure to there will not be the perpendicular bright fringes phenomenon occurred in similar existing RGBW technology, thus display brightness is more even.

Embodiment two

Please refer to Fig. 4, it is the schematic diagram of another embodiment of the application's dot structure.

As shown in Figure 4, the first pixel 41, first pixel that dot structure 40 comprises repeated arrangement comprises according to the first sub-pixel unit 411, second sub-pixel unit 412 of clockwise direction arrangement, the 3rd sub-pixel unit 413 and the 4th sub-pixel unit 414.

First sub-pixel unit 411 and the 3rd sub-pixel unit 413 comprise the first sub-pixel A and the second sub-pixel B, first sub-pixel A is identical with at the arrangement mode of the 3rd sub-pixel list 413 yuan at the arrangement mode of the first sub-pixel unit 411 with the second sub-pixel B, that is the position of the first sub-pixel A in the first sub-pixel unit 411 is identical with the position in the 3rd sub-pixel unit 413, and the position of the second sub-pixel B in the first sub-pixel unit 411 is identical with the position in the 3rd sub-pixel unit 413.Second sub-pixel unit 412 and the 4th sub-pixel unit 414 comprise the 3rd sub-pixel C and the 4th sub-pixel D, 3rd sub-pixel C is identical with at the arrangement mode of the 4th sub-pixel unit 314 at the arrangement mode of the second sub-pixel unit 412 with the 4th sub-pixel D, that is the position of the 3rd sub-pixel C in the second sub-pixel unit 312 is identical with the position in the 4th sub-pixel unit 414, and the position of the second sub-pixel D in the second sub-pixel unit 312 is identical with the position in the 4th sub-pixel unit 414.

The right-angle triangle of the shape of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel B and the 4th sub-pixel D to be the right angle length of side be 2:1, and the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D are congruent.That is, the ratio of two right angle length of sides of any one sub-pixel in the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D is 2:1, and the longer right-angle side appearance etc. between different subpixel, shorter right-angle side appearance etc.Two right angle length of sides of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D can be designated as a4 and b4 respectively, then the ratio of a4 and b4 is 2:1.Like this, it is the rectangle of 2:1 that first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit and the 4th sub-pixel unit are two length of sides, and the first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit and the 4th sub-pixel unit congruence.

The difference of the dot structure of the dot structure that the present embodiment provides and embodiment one is that the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D two right angle length of sides are separately unequal, and the ratio of respective two right angle length of sides is 2:1.

In an optional implementation of the present embodiment, the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D are the mutually different sub-pixel of color.That is, the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D are four kinds of different colors.Usually, being added with different ratios of these four kinds of different colours, can produce various color.Alternatively, the color of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D is respectively the one in red, blue, green or white.Particularly, the color of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel can be respectively that red, green, blue and white, red bluish-green white, turquoise red white, green red indigo plant are white, green white, bluish-green red white, the combination such as Bai Hong is bluish-green, Bai Hong is bluish-green of Lan Hong.Certainly it will be understood by those skilled in the art that sub-pixel can also be other color in actual applications, will not enumerate here.

In an optional implementation of the present embodiment, the length a2 of the length a4 of long right-angle side of the first sub-pixel A, the second sub-pixel B, the 3rd sub-pixel C and the 4th sub-pixel D and the sub-pixel of the RGBW structure shown in Fig. 2 is equal, compared with Fig. 2, adopt the dot structure of this embodiment, sub-pixel quantity reduces 1/4, data line can reduce 1/4, and coordinate the driving method comprising the display device of this dot structure to drive dot structure 40, the display effect of the PPI identical with the ordinary display panel shown in Fig. 1 can be realized.Pixel Dimensions increases, and reduces technology difficulty.

In the present embodiment, as shown in Figure 4, join end to end on D3 or D4 of direction with sub-pixels, free of discontinuities when then showing the oblique line of this color in the direction in which, such as, the first sub-pixel A shown in Fig. 4 joins end to end on D3 direction, then when showing the oblique line on D3 direction homochromy with the first sub-pixel A, oblique line links up free of discontinuities, there will not be the problem of color border, and discontinuous when the RGBW of prior art shows monochrome sub-pixels on D3 and D4 direction, there is interruption.When sub-pixel has interval on D3 or D4 of direction, because the sub-pixel area of the dot structure of the present embodiment is larger than the area of the sub-pixel of the RGBW structure shown in Fig. 2, therefore better than the continuity in the RGBW shown in Fig. 2 on D3 or D4 direction when showing monochromatic straight line, color control is more accurate simultaneously, acutance is higher, can realize good display effect.

Based on the above-mentioned dot structure provided, the application also provides a kind of display panel, and this display panel comprises the dot structure that the application provides.

Based on the above-mentioned display panel provided, the application also provides a kind of display device.This display device comprises above-mentioned display panel.This display device both can be liquid crystal (LiquidCrystalDisplay, LCD) display device, also can be Organic Light Emitting Diode (OrganicLight-EmittingDiode, OLED display.For LCD, the dot structure described in above-mentioned any embodiment, can as the foundation configuring thin film transistor (TFT) (ThinFilmTransistor, TFT) and color film.For OLED, the pel array in the array base palte described in above-mentioned any embodiment, can as the foundation being configured with OLED size and distribution.

Present invention also provides a kind of driving method of display device, be applied to the display device in above-mentioned any embodiment.In the display device of above-described embodiment, the first sub-pixel A is the first color, and the color of the second sub-pixel B is the second color, and the color of the 3rd sub-pixel C is the 3rd color, and the color of the 4th sub-pixel D is the 4th color.Display device also comprises control chip.Control chip comprises the first signal processing part and secondary signal handling part.Control chip receives the display picture data of display panel.Display picture data can be the brightness data of the redness (R) of display frame, green (G) and blue (B), i.e. the brightness data of R, G, B sub-pixel.

Fig. 5 shows the process flow diagram of display-apparatus driving method, step 501, and control chip receives the first display picture data of display panel, and the first display picture data comprises the first brightness value of the first color, the second color and the 3rd color sub-pixels; Step 502, the first display picture data obtains the second display picture data through the first signal processing part conversion of control chip, and the second display picture data comprises the second brightness value of the first color, the second color, the 3rd color and the 4th color sub-pixels; Step 503, the second display picture data converts through the secondary signal handling part of control chip and obtains the brightness data of the first pixel sub-pixel; The brightness data of the sub-pixel of step 504 first pixel exports to display panel by control chip.

To the display device of embodiment one, describe the data corresponding relation of control chip conversion method in above-mentioned driving method in detail below in conjunction with Fig. 6 a, Fig. 6 b, Fig. 6 c.

Fig. 6 a is the schematic diagram of the display device of existing RealRGB rectangle pixel arrangement.

In the present embodiment, display picture data can represent with formula (1):

$\left[\begin{array}{ccccccc}{X^{\′}}_{11}& {Y^{\′}}_{12}& {Z^{\′}}_{13}& \mathrm{...}& {X^{\′}}_{1(n-2)}& {Y^{\′}}_{1(n-1)}& {Z^{\′}}_{1n}\\ {X^{\′}}_{21}& {Y^{\′}}_{22}& {Z^{\′}}_{23}& \mathrm{...}& {X^{\′}}_{2(n-2)}& {Y^{\′}}_{2(n-1)}& {Z^{\′}}_{2n}\\ {X^{\′}}_{31}& {Y^{\′}}_{32}& {Z^{\′}}_{33}& \mathrm{...}& {X^{\′}}_{3(n-2)}& {Y^{\′}}_{3(n-1)}& {Z^{\′}}_{3n}\\ \mathrm{...}& \mathrm{...}& \mathrm{...}& \mathrm{...}& \mathrm{...}& \mathrm{...}& \mathrm{...}\\ {X^{\′}}_{(m-2)1}& {Y^{\′}}_{(m-2)2}& {Z^{\′}}_{(m-2)3}& \mathrm{...}& {X^{\′}}_{(m-2)(n-2)}& {Y^{\′}}_{(m-2)(n-1)}& {Z^{\′}}_{(m-2)n}\\ {X^{\′}}_{(m-1)1}& {Y^{\′}}_{(m-1)2}& {Z^{\′}}_{(m-1)3}& \mathrm{...}& {X^{\′}}_{(m-1)(n-2)}& {Y^{\′}}_{(m-1)(n-1)}& {Z^{\′}}_{(m-1)n}\\ {X^{\′}}_{m1}& {Y^{\′}}_{m2}& {Z^{\′}}_{m3}& \mathrm{...}& {X^{\′}}_{m(n-2)}& {Y^{\′}}_{m(n-1)}& {Z^{\′}}_{mn}\end{array}\right]---\left(1\right)$

Wherein, X ' ₁₁..., X ' _{1 (n-2)}..., X ' _m1..., X ' _{m (n-2)}for the first brightness value of the sub-pixel of the first color in display picture data, Y ' ₁₂..., Y ' _{1 (n-1)}..., Y ' _m2..., Y _{m (n-1)}for the first brightness value of the sub-pixel of the second color in display picture data, Z ' ₁₃..., Z ' _1n..., Z ' _m3..., Z ' _mnfor the first brightness value of the sub-pixel of the 3rd color in display picture data, m, n are respectively line number and the columns of display picture data.

As shown in Figure 6 a, the display picture data of formula (1) can be represented by the array of sub-pixels shown in 61.Array of sub-pixels 61 can comprise multiple display unit, such as 611 shown in Fig. 6 a, 612,613,614,615,616,617,618 and 619 etc.Each display unit comprises a brightness center, and the brightness center of display unit 611,612,613,614,615,616,617,618 and 619 is respectively 6110,6120,6130,6140,6150,6160,6170,6180,6190 etc.

By the brightness center translation shown in Fig. 6 a in the dot structure 30 shown in Fig. 3, can obtain the brightness central distribution figure of the present embodiment, as fig. 6 c.As can be seen from Fig. 6 c, brightness center is arranged on the mid point of the geometric center of the first pixel, the mid point of any two the first pixel geometric center lines adjacent on sweep trace, the geometric center line of any two the first pixels adjacent in data on data line direction, the mid point of any two adjacent the first pixel geometric center lines is assumed to be the brightness center of the second pixel, then, the brightness center of the present embodiment is also included in the mid point of two second pixel brightness lines of centres adjacent on sweep trace.In 6c, a display unit can be determined in each brightness center.Carry out sub-pixel in the present embodiment when playing up, display unit can be seen as a virtual pixel, but not the physical picture element of reality point.By sharing physical picture element point between multiple display unit, the display PPI higher than physics PPI can be realized.

In the present embodiment, as fig. 6 c, the first pixel 631,632,633,634 etc. gone out by solid box, has brightness center in the geometric center of the first pixel 631,632,633,634, is respectively 6310,6320,6330,6340, second sub-pixel unit of the first pixel 631 and the 3rd sub-pixel unit and 632 the first pixel cell and the 4th sub-pixel unit form the second virtual pixel 641, 3rd sub-pixel unit of the first pixel 631 and the 4th sub-pixel unit and 633 the first pixel cell and the second sub-pixel unit form the second virtual pixel 642, 3rd sub-pixel unit of the first pixel 632 and the 4th sub-pixel unit and 634 the first pixel cell and the second sub-pixel unit form the second virtual pixel 643, second sub-pixel unit of the first pixel 633 and the 3rd sub-pixel unit and 634 the first pixel cell and the 4th sub-pixel unit form the second virtual pixel 644, the geometric center of the second pixel is distributed with brightness center, is respectively 6410,6420,6430,6440.Second pixel comprises along the 4th sub-pixel unit of arranged clockwise, the 3rd sub-pixel unit, the second sub-pixel unit and the first sub-pixel unit.3rd sub-pixel unit of the second pixel 642 and the second sub-pixel unit and 643 the first sub-pixel unit and the 4th sub-pixel unit form the first virtual pixel 651, the geometric center of the first virtual pixel is positioned on the mid point of 6420 and 6430 lines, is also a brightness center 6510.

Display unit respectively in corresponding diagram 6a of brightness center 6310,6410,6320,6420,6510,6430,6330,6440 and 6340 in Fig. 6 c 611,612,613,614,615,616,617,618 and 619 respective brightness centers 6110,6120,6130,6140,6150,6160,6170,6180,6190.

In Fig. 6 a, the first brightness value of each sub-pixel of display unit 611,612,613,614,615,616,617,618 and 619 can form the matrix such as formula (2)

$\left[\begin{array}{ccccccccc}{X^{\′}}_{kl}& {Y^{\′}}_{k(l+1)}& {Z^{\′}}_{k(l+2)}& {X^{\′}}_{k(l+3)}& {Y^{\′}}_{k(l+4)}& {Z^{\′}}_{k(l+5)}& {X^{\′}}_{k(l+6)}& {Y^{\′}}_{k(l+7)}& {Z^{\′}}_{k(l+8)}\\ {X^{\′}}_{(k+1)l}& {Y^{\′}}_{(k+1)(l+1)}& {Z^{\′}}_{(k+1)(l+2)}& {X^{\′}}_{(k+1)(l+3)}& {Y^{\′}}_{(k+1)(l+4)}& {Z^{\′}}_{(k+1)(l+5)}& ?{X^{\′}}_{(k+1)(l+6)}& {Y^{\′}}_{(k+1)(l+7)}& {Z^{\′}}_{(k+1)(l+8)}\\ {X^{\′}}_{(k+2)l}& {Y^{\′}}_{(k+2)(l+1)}& {Z^{\′}}_{(k+2)(l+2)}& {X^{\′}}_{(k+2)(l+3)}& {Y^{\′}}_{(k+2)(l+4)}& {Z^{\′}}_{(k+2)(l+5)}& {X^{\′}}_{(k+2)(l+6)}& {Y^{\′}}_{(k+2)(l+7)}& {Z^{\′}}_{(k+2)(l+8)}\end{array}\right]---\left(2\right)$

Wherein, the line number of the sub-pixel that k, l are respectively the first color in display unit 611 in array of sub-pixels 61 and columns, X ' _kl, Y ' _{k (l+1)}, Z ' _{k (l+2)}be respectively the first brightness value of the sub-pixel of the first color in display unit 611, the sub-pixel of the second color, the sub-pixel of the 3rd color; X ' _{k (l+3)}, Y ' _{k (l+4)}, Z ' _{k (l+5)}; Be respectively the first brightness value of the sub-pixel of the first color in display unit 612, the sub-pixel of the second color, the sub-pixel of the 3rd color; X ' _{k (l+6)}, Y ' _{k (l+7)}, Z ' _{k (l+8)}be respectively the first brightness value of the sub-pixel of the first color in display unit 613, the sub-pixel of the second color, the sub-pixel of the 3rd color; X ' _{(k+1) l}, Y ' _{(k+1) (l+1)}, Z ' _{(k+1) (l+2)}be respectively the first brightness value of the sub-pixel of the first color in display unit 614, the sub-pixel of the second color, the sub-pixel of the 3rd color; X ' _{(k+1) (l+3)}, Y ' _{(k+1) (l+4)}, Z ' _{(k+1) (l+5)}be respectively the first brightness value of the sub-pixel of the first color in display unit 615, the sub-pixel of the second color, the sub-pixel of the 3rd color; X ' _{(k+1) (l+6)}, Y ' _{(k+1) (l+7)}, Z ' _{(k+1) (l+8)}be respectively the first brightness value of the sub-pixel of the first color in display unit 616, the sub-pixel of the second color, the sub-pixel of the 3rd color; X ' _{(k+2) l}, Y ' _{(k+2) (l+1)}, Z ' _{(k+2) (l+2)}be respectively the first brightness value of the sub-pixel of the first color in display unit 617, the sub-pixel of the second color, the sub-pixel of the 3rd color; X ' _{(k+2) (l+3)}, Y ' _{(k+2) (l+4)}, Z ' _{(k+2) (l+5)}be respectively the first brightness value of the sub-pixel of the first color in display unit 618, the sub-pixel of the second color, the sub-pixel of the 3rd color; X ' _{(k+2) (l+6)}, Y ' _{(k+2) (l+7)}, Z ' _{(k+2) (l+8)}be respectively the first brightness value of the sub-pixel of the first color in display unit 619, the sub-pixel of the second color, the sub-pixel of the 3rd color.

Formula (2) is after the first handling part of control chip, obtain the second display picture data, as shown in Figure 6 b, display unit 621,622,623,624,625,626,627,628 and 629 in figure 6b distinguishes the brightness value of each sub-pixel in the display unit 611,612,613,614,615,616,617,618 in corresponding diagram 6a and the display unit 621,622,623,624,625,626,627,628 and 629 in 619, Fig. 6 b such as formula shown in (3):

$\left[\begin{array}{cccccccccccc}{X}_{kl}& Y_{k(l+1)}& Z_{k(l+2)}& W_{k(l+3)}& X_{k(l+4)}& Y_{k(l+5)}& Z_{k(l+6)}& W_{k(l+7)}& X_{k(l+8)}& Y_{k(l+9)}& Z_{k(l+10)}& W_{k(l+11)}\\ X_{(k+1)l}& Y_{(k+1)(l+1)}& Z_{(k+1)(l+2)}& W_{(k+1)(l+3)}& X_{(k+1)(l+4)}& Y_{(k+1)(l+5)}& Z_{(k+1)(l+6)}& W_{(k+1)(l+7)}& X_{(k+1)(l+8)}& Y_{(k+1)(l+9)}& Z_{(k+1)(l+10)}& W_{(k+1)(l+11)}\\ X_{(k+2)l}& Y_{(k+2)(l+1)}& Z_{(k+2)(l+2)}& ?W_{(k+2)(l+3)}& X_{(k+2)(l+4)}& Y_{(k+2)(l+5)}& Z_{(k+2)(l+6)}& W_{(k+2)(l+7)}& X_{(k+2)(l+8)}& Y_{(k+2)(l+9)}& Z_{(k+2)(l+10)}& W_{(k+2)(l+11)}\end{array}\right]---\left(3\right)$

In formula (3), wherein, the line number of the sub-pixel that k, l are respectively the first color in the second display picture data in display unit 621 in array of sub-pixels 62 and columns, X _kl, Y _{k (l+1)}, Z _{k (l+2)}, W _{k (l+3)}be respectively the second brightness value of the sub-pixel of the first color in display unit 621, the sub-pixel of the second color, the sub-pixel of the 3rd color, the sub-pixel of the 4th color; X _{k (l+4)}, Y _{k (l+5)}, Z _{k (l+6)}, W _{k (l+7)}be respectively the sub-pixel of the first color in the display unit 622 of the second display picture data, the sub-pixel of the second color, the sub-pixel of the 3rd color, the second brightness value of the 4th sub-pixel; X _{k (l+8)}, Y _{k (l+9)}, Z _{k (l+10)}, W _{k (l+11)}be respectively the sub-pixel of the first color in display unit 623 in the second display picture data, the sub-pixel of the second color, the sub-pixel of the 3rd color, the second brightness value of the 4th color sub-pixels; X _{(k+1) l}, Y _{(k+1) (l+1)}, Z _{(k+1) (l+2)}, W _{(k+1) (l+3)}be respectively the sub-pixel of the first color in display unit 624 in the second display picture data, the sub-pixel of the second color, the sub-pixel of the 3rd color, the second brightness value of the 4th sub-pixel; X _{(k+1) (l+4)}, Y _{(k+1) (l+5)}, Z _{(k+1) (l+6)}, W _{(k+1) (l+7)}be respectively the sub-pixel of the first color in display unit 625 in the second display picture data, the sub-pixel of the second color, the sub-pixel of the 3rd color, the second brightness value of the 4th sub-pixel; X _{(k+1) (l+8)}, Y _{(k+1) (l+9)}, Z _{(k+1) (l+10)}, W _{(k+1) (l+11)}be respectively the sub-pixel of the first color in display unit 626 in the second display picture data, the sub-pixel of the second color, the sub-pixel of the 3rd color, the second brightness value of the 4th sub-pixel; X _{(k+2) l}, Y _{(k+2) (l+1)}, Z _{(k+2) (l+2}), W _{(k+2) (l+3)}be respectively the second brightness value of the sub-pixel of the first color in display unit 627 in the second display picture data, the sub-pixel of the second color, the sub-pixel of the 3rd color, the sub-pixel of the 4th color; X _{(k+2) (l+4)}, Y _{(k+2) (l + 5)}, Z _{(k+2) (l+6)}, W _{(k+2) (l+7)}be respectively the sub-pixel of the first color in display unit 628 in the second display picture data, the sub-pixel of the second color, the sub-pixel of the 3rd color, the second brightness value of the 4th sub-pixel; X _{(k+2) (l+8)}, Y _{(k+2) (l+9)}, Z _{(k+2) (l+10)}, W _{(k+2) (l+11)}be respectively the sub-pixel of the first color in display unit 629 in the second display picture data, the sub-pixel of the second color, the sub-pixel of the 3rd color, the second brightness value of the 4th sub-pixel.

Then X ' _ij, Y ' _ij, Z ' _ijwith X _ij, Y _ij, Z _ij, K _ijmeet following relational expression:

W’ _i(j+3)＝min(X’ _ij，Y’ _i(j+1)，Z’ _i(j+2))；(4)

W _i(j+3)＝255×(W’ _i(j+3)/255) ^a；(5)

X _ij＝X’ _ij-W _i(j+3)；(6)

Y _i(j+1)＝Y’ _i(j+1)-W _i(j+3)；(7)

Z _i(j+2)＝Z’ _i(j+2)-K _i(j+3)；(8)

In formula, k≤i≤k+2; L≤j≤l+8;

Second display picture data, again through the secondary signal handling part of control chip, obtains the brightness value of each sub-pixel of first pixel that can be shown by display panel.

Suppose, the color of the first sub-pixel is the 4th color, and the color of the second sub-pixel is the first color, and the color of the 3rd sub-pixel is the second color, and the color of the 4th sub-pixel is the 3rd color, then, the brightness of each sub-pixel of the first pixel is as follows:

The brightness value of the first sub-pixel of the first sub-pixel unit is

P11＝α×(W _k(l+3)+W _k(l+7)+W _(K+1)(l+3)+W _(k+1)(l+7))；(9)

The brightness value of the second sub-pixel of the first sub-pixel unit is

P21＝α×(X _kl+X _k(l+4)+X _(k+1)l+X _(k+1)(l+4))；(10)

The brightness value of the 3rd sub-pixel of the second sub-pixel unit is

P31＝α×(Y _k(l+5)+Y _k(j+9)+Y _(k+1)(l+5)+Y _(k+1)(l+9))；(11)

The brightness value of the 4th sub-pixel of the second sub-pixel unit is

P41＝α×(Z _k(l+6)+Z _k(l+10)+Z _(k+1)(l+6)+Z _(k+1)(l+10))；(12)

The brightness value of the second sub-pixel of the 3rd sub-pixel unit is

P22＝α×(X _(k+2)(l+4)+X _(i+2)(l+8)+X _(k+1)(l+4)+X _(k+1)(j+8))；(13)

The brightness value of the first sub-pixel of described 3rd sub-display unit is

p12＝α×(W _(k+2)(l+8)+W _(k+2)(l+11)+W _(k+1)(l+8)+W _(k+1)(l+11))；(14)

The brightness value of the 4th sub-pixel of described 4th sub-display unit is

p42＝α×(Z _(k+1)(l+2)+Z _(k+1)(l+6)+Z _(k+2)(l+2)+Z _(k+2)(l+6))；(15)

The brightness value of the 3rd sub-pixel of described 4th sub-display unit is

p32＝α×(Y _(k+1)(l+1)+Y _(k+1)(l+5)+Y _(k+2)(l+1)+Y _(k+2)(l+5))；(16)

Wherein, 0< α <1.

To the display device of embodiment two, be described below in conjunction with Fig. 4, Fig. 6 a and Fig. 6 b, by the brightness center translation shown in Fig. 6 a in the dot structure 40 shown in Fig. 4, can obtain the brightness central distribution figure of embodiment two, as shown in Figure 4.As can be seen from Figure 4, brightness center is arranged on the geometric center of the first pixel on data line direction, the mid point of any two the first pixel geometric center lines adjacent on the data line, in 40, a display unit can be determined in each brightness center.Carry out sub-pixel in the present embodiment when playing up, display unit can be seen as a virtual pixel, but not the physical picture element of reality point.By sharing physical picture element point between multiple display unit, the display PPI higher than physics PPI can be realized.

In the present embodiment, as shown in Figure 4, the first pixel 421 gone out by solid box, 422, etc., have brightness center in the geometric center of the first pixel 421,422, be respectively 4210,4220; 3rd sub-pixel unit of the first pixel 421 and the 4th sub-pixel unit and 422 the first pixel cell and the second sub-pixel unit form the second virtual pixel 431, the geometric center of the second pixel is that a brightness center 4310, second pixel 431 comprises along the 4th sub-pixel unit of arranged clockwise, the 3rd sub-pixel unit, the second sub-pixel unit and the first sub-pixel unit.

Display unit respectively in corresponding diagram 6a of brightness center 4210,4310,4220 in Fig. 4 611,614,617 respective brightness centers 6110,6140,6170.

In Fig. 6 a, the first brightness value of each sub-pixel of display unit 611,614,617 can form the matrix such as formula (17)

$\left[\begin{array}{ccc}{X^{\&prime;}}_{kl}& {Y^{\&prime;}}_{k(l+1)}& {Z^{\&prime;}}_{k(l+2)}\\ {X^{\&prime;}}_{(k+1)l}& {Y^{\&prime;}}_{(k+1)(l+1)}& {Z^{\&prime;}}_{(k+1)(l+2)}\\ {X^{\&prime;}}_{(k+2)l}& {Y^{\&prime;}}_{(k+2)(l+1)}& {Z^{\&prime;}}_{(k+2)(l+2)}?\end{array}\right]---\left(17\right)$

Wherein, the line number of the sub-pixel that k, l are respectively the first color in display unit 611 in array of sub-pixels 61 and columns, X ' _kl, Y ' _{k (l+1)}, Z ' _{k (l+2)}be respectively the first brightness value of the sub-pixel of the first color in display unit 611, the sub-pixel of the second color, the sub-pixel of the 3rd color; X ' _{(k+1) l}, Y ' _{(k+1) (l+1)}, Z ' _{(k+1) (l+2)}be respectively the first brightness value of the sub-pixel of the first color in display unit 614, the sub-pixel of the second color, the sub-pixel of the 3rd color; X ' _{(k+2) l}, Y ' _{(k+2) (l+1)}, Z ' _{(k+2) (l+2)}be respectively the first brightness value of the sub-pixel of the first color in display unit 617, the sub-pixel of the second color, the sub-pixel of the 3rd color.

Formula (17) is after the first handling part of control chip, obtain the second display picture data, as shown in Figure 6 b, in display unit 621,624,627 in display unit 611,614,617, Fig. 6 b in display unit 621,624,627 difference corresponding diagram 6a in figure 6b, the brightness value of each sub-pixel is such as formula shown in (18):

$\left[\begin{array}{cccc}{X}_{kl}& Y_{k(l+1)}& Z_{k(l+2)}& W_{k(l+3)}\\ X_{(k+1)l}& Y_{(k+1)(l+1)}& Z_{(k+1)(l+2)}& W_{(k+1)(l+3)}\\ X_{(k+2)l}& Y_{(k+2)(l+1)}& Z_{(k+2)(l+2)}& ?W_{(k+2)(l+3)}\end{array}\right]---\left(18\right)$

In formula (18), the line number of the sub-pixel that k, l are respectively the first color in the second display picture data in display unit 621 in array of sub-pixels 62 and columns, X _kl, Y _{k (l+1)}, Z _{k (l+2)}, W _{k (l+3)}be respectively the second brightness value of the sub-pixel of the first color in display unit 621, the sub-pixel of the second color, the sub-pixel of the 3rd color, the sub-pixel of the 4th color; X _{(k+1) l}, Y _{(k+1) (l+1)}, Z _{(k+1) (l+2)}, W _{(k+1) (l+3)}be respectively the sub-pixel of the first color in display unit 624 in the second display picture data, the sub-pixel of the second color, the sub-pixel of the 3rd color, the second brightness value of the 4th sub-pixel; X _{(k+2) l}, Y _{(k+2) (l+1)}, Z _{(k+2) (l+2}), W _{(k+2) (l+3)}be respectively the second brightness value of the sub-pixel of the first color in display unit 627 in the second display picture data, the sub-pixel of the second color, the sub-pixel of the 3rd color;

Then X ' _ij, Y ' _ij, Z ' _ijwith X _ij, Y _ij, Z _ij, K _ijmeet following relational expression:

W’ _i(j+3)＝min(X’ _ij，Y’ _i(j+1)，Z’ _i(j+2))；(19)

W _i(j+3)＝255×(W’ _i(j+3)/255) ^a；(20)

X _ij＝X’ _ij-W _i(j+3)；(21)

Y _i(j+1)＝Y’ _i(j+1)-W _i(j+3)；(22)

Z _i(j+2)＝Z’ _i(j+2)-K _i(j+3)；(23)

Wherein, k≤i≤k+2, and i is integer.J equals l.

Second display picture data, again through the secondary signal handling part of control chip, obtains the brightness value of each sub-pixel of the second pixel 431.

Suppose, the color of the first sub-pixel is the 4th color, and the color of the second sub-pixel is the first color, and the color of the 3rd sub-pixel is the second color, and the color of the 4th sub-pixel is the 3rd color, then, the brightness value of each sub-pixel of the second pixel 431 is as follows:

The brightness value of the 3rd sub-pixel of the 4th sub-pixel unit is

P31＝β×(Y _k(l+1)+Y _(k+1)(l+1))；(24)

The brightness value of the 4th sub-pixel of the 4th sub-pixel unit is

P41＝β×(Z _k(l+2)+Z _(k+1)(l+2))(25)

The brightness value of the first sub-pixel of the 3rd sub-pixel unit is

P11＝β×(W _k(l+3)+W _(k+1)(l+3))；(26)

The brightness value of the second sub-pixel of the 3rd sub-pixel unit is

P21＝β×(X _kl+X _(k+1)l)；(27)

The brightness value of the 3rd sub-pixel of the second sub-pixel unit is

P32＝β×(Y _(k+1)(l+1)+Y _(k+2)(l+1))；(28)

The brightness of the 4th sub-pixel of the second sub-pixel unit is

P42＝β×(Z _(k+1)(l+2)+Z _(k+2)(l+2))；(29)

The brightness value of the first sub-pixel of the first sub-pixel unit is

P12＝β×(W _(k+2)(l+3)+W _(k+1)(l+3))；(30)

The brightness value of the second sub-pixel of the first sub-pixel unit is

P22＝β×(X _(k+2)l+X _(k+1)l)；(31)

Wherein, 0< β <1.

More than describe and be only the preferred embodiment of the application and the explanation to institute's application technology principle.Those skilled in the art are to be understood that, invention scope involved in the application, be not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should be encompassed in when not departing from inventive concept, other technical scheme of being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed simultaneously.The technical characteristic that such as, disclosed in above-mentioned feature and the application (but being not limited to) has similar functions is replaced mutually and the technical scheme formed.

Claims (12)

1. a dot structure, comprise multiple first pixel, described first pixel is 2 × 2 sub-pixel unit matrixes, and described first pixel comprises the first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit and the 4th sub-pixel unit that arrange according to clockwise direction;

Described first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit are the identical rectangle of shape with the 4th sub-pixel unit,

Described first sub-pixel unit and described 3rd sub-pixel unit include the first sub-pixel and the second sub-pixel, and described first sub-pixel unit is all identical with the arrangement mode of described second sub-pixel with described first sub-pixel in described 3rd sub-pixel unit; Described first sub-pixel and described second sub-pixel are right-angle triangle;

Described second sub-pixel unit and described 4th sub-pixel unit include the 3rd sub-pixel and the 4th sub-pixel, and described second sub-pixel unit is all identical with the arrangement mode of described 4th sub-pixel with described 3rd sub-pixel in described 4th sub-pixel unit; Described 3rd sub-pixel and described 4th sub-pixel are right-angle triangle.

2. dot structure according to claim 1, is characterized in that, described rectangle is square.

3. dot structure according to claim 1, is characterized in that, the length breadth ratio of described rectangle is 2:1.

4. dot structure according to any one of claim 1 to 3, is characterized in that, the color of described first sub-pixel, the second sub-pixel, the 3rd sub-picture and the 4th sub-pixel is different.

5. dot structure according to claim 4, is characterized in that, the color of described first sub-pixel, the second sub-pixel, the 3rd sub-pixel and the 4th sub-pixel is any one in red sub-pixel, green sub-pixels, blue subpixels and white sub-pixels.

6. a display panel, is characterized in that, comprises the dot structure according to any one of claim 1 to 5.

7. a display device, comprises display panel as claimed in claim 6.

8. display device according to claim 7, is characterized in that, described display device is organic electroluminescence display device and method of manufacturing same or liquid crystal indicator.

9. the driving method of a display device, be applied to the display device according to any one of claim 7 to 8, it is characterized in that, the color of described first sub-pixel is the first color, the color of described second sub-pixel is the second color, the color of described 3rd sub-pixel is the 3rd color, and the color of described 4th sub-pixel is the 4th color; Described display device comprises control chip, and described control chip comprises the first signal processing part and secondary signal handling part;

Described control chip receives the first display picture data of described display panel, and described first display picture data comprises the first brightness value of the first color, the second color and the 3rd color sub-pixels; Described first display picture data obtains the second display picture data through the described first signal processing part conversion of described control chip, and described second display picture data comprises the second brightness value of the first color, the second color, the 3rd color and the 4th color sub-pixels; Described second display picture data converts through the described secondary signal handling part of described control chip and obtains the brightness data of described first pixel sub-pixel, and the brightness data of the sub-pixel of described first pixel exports to described display panel by described control chip.

10. the driving method of display device according to claim 9, is characterized in that, the conversion method of described first signal processing part comprises:

In described first display picture data, the first brightness value of the first color sub-pixels is X ', and the first brightness value of the second color sub-pixels is Y ', and the first brightness value of the 3rd color sub-pixels is Z ', and numerical value minimum in brightness value X ', Y ', Z ' is K ';

Arbitrarily in described second display picture data, the second brightness value of the first color sub-pixels is X, and the second brightness value of the second color sub-pixels is Y, and the second brightness value of the 3rd color sub-pixels is Z, and the second brightness value of the 4th color sub-pixels is K;

Wherein, X ', Y ', Z ' and X, Y, Z, K, K ' meets following relational expression:

K’＝min(X’，Y’，Z’)；

K＝255×(K’/255) ^a；

X＝X’-K；

Y＝Y’-K；

Z＝Z’-K；

Wherein, a>1.

The driving method of 11. display device according to claim 10, it is characterized in that, when the first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit and the 4th sub-pixel unit are square, the conversion method of described secondary signal handling part comprises:

Arbitrarily in described first pixel, the brightness value of the first sub-pixel is P1, and the brightness value of the second sub-pixel is P2, and the brightness value of the 3rd sub-pixel is P3, and the brightness value of the 4th sub-pixel is P4,

Wherein, X, Y, Z, K and P1, P2, P3, P4 meet following relational expression:

P1＝4αX；

P2＝4αY；

P3＝4αZ；

P4＝4αK；

Wherein, α is greater than zero, and is less than 1.

The driving method of 12. display device according to claim 10, it is characterized in that, when the first sub-pixel unit, the second sub-pixel unit, the 3rd sub-pixel unit and the 4th sub-pixel unit be the length of side are the rectangle of 2:1, the conversion method of described secondary signal handling part comprises:

Arbitrarily in described first pixel, the brightness value of the first sub-pixel is P1, and the brightness value of the second sub-pixel is P2, and the brightness value of the 3rd sub-pixel is P3, and the brightness value of the 4th sub-pixel is P4,

Wherein, X, Y, Z, K and P1, P2, P3, P4 meet following relational expression:

P1＝2βX；

P2＝2βY；

P3＝2βZ；

P4＝2βK；

Wherein, β is greater than zero, and is less than 1.