CN100397193C - Polarization device and display device with same - Google Patents
Polarization device and display device with same Download PDFInfo
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- CN100397193C CN100397193C CNB2005101285678A CN200510128567A CN100397193C CN 100397193 C CN100397193 C CN 100397193C CN B2005101285678 A CNB2005101285678 A CN B2005101285678A CN 200510128567 A CN200510128567 A CN 200510128567A CN 100397193 C CN100397193 C CN 100397193C
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- display
- polarizer
- refractive index
- refractor
- diffusion layer
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Abstract
The invention discloses a polarizer and a display with the polarizer. And the polarizer comprises: a polarizing plate with a first refractivity; and a refracting layer with a second refractivity, arranged on the polarizing plate, where the second refractivity is lower than the first refractivity so as to be able to enlarge the visual angle of the display. And the display comprises: a first polarizing plate; a display panel located on the first polarizing plate; a second polarizing plate located on the display panel and having a first refractivity; and a refracting layer located on the second polarizing plate and having a second refractivity, where the second refractivity is less than the first one, which can enlarge the visual angle of the display.
Description
Technical field
The present invention relates to a kind of polarizing appliance, especially have the polarizing appliance of viewing angle compensation effect; And display with polarizing appliance.
Background technology
Along with the high speed development of the Internet and telecommunication technology, informationization spreads to the individual gradually, so portable information product, as notebook computer, mobile phone, digital camera, and personal digital assistant etc., all fast-developing with grow up.
Since LCD have slimming, lightweight, low power consumption, radiationless pollution and can with advantage such as semiconductor fabrication technical compatibility, and complying with the rise in digital information market, this strand the Internet, make it short three during the decade, the application of product is tremendous growth; Application by low information capacity demonstration such as early stage simple and easy wrist-watch, counter product expands to the monitor or the portable information product that become more meticulous gradually.Its technology contains the exploitation of all stage constructions such as material, equipment, manufacture process, product performance, be one day in the lining.Even to this day, more continue to grow up, become the main flow in flat panel display device of future generation market with surprising imposing manner.
The LCD problem that is the visual angle that This is what people generally disapprove of the most.When the backlight that is had good directive property when LCD illuminates, nearly all light all directly advances forward, therefore when we when front end is watched display, light quantity on two side directions is very little, in general, visual angle of liquid crystal display on the market is the most common about spending with 30, if want to watch display with the angle greater than these number of degrees, then can can't see picture clearly because of deficiency in light quantity.
In order to improve this shortcoming, occurred several in the known technology and attempted the method that solves, please refer to Fig. 1, its by No. the 00343291st, wherein a kind of TaiWan, China patent disclosure the sectional view of proposition LCD.Wherein, LCD 1 is formed by Polarizer 10, diffusion layer 11 that particulate 111 and filling material 112 constituted, liquid crystal panel (cell) 12, Polarizer 13 and by the backlight group 14 that prism 141 and light source 142 constituted.
Arrive LCD 1 by the backlight group 14 parallel light that sends in approximately perpendicular mode, outwards disperse the formation image strip via the refraction of Polarizer 13, liquid crystal panel 12, diffusion layer 11 and Polarizer 10 in regular turn again; This scheme promptly utilizes the refractive index of particulate 111 and liquid crystal panel 12 different and utilize the refractive index of the refractive index of filling material 112 and liquid crystal panel 12 different, and improves the angle and the reflex of light between Polarizer 10 and liquid crystal panel 12 of diffusion light respectively.
Refer again to Fig. 2, it is known display sectional view, and a liquid crystal panel 12, Polarizer 10, first diffusion layer 11 ' and one second diffusion layer 15 ' are wherein arranged on backlight group 14 successively.Because each layer is all parallel to each other, therefore the normal N of each layer is also identical, when light when backlight group 14 penetrates, advance through liquid crystal panel 12, Polarizer 10, first diffusion layer 11 ' and second diffusion layer 15 ', because the refractive index of each layer is identical, so moving with second path A 2, light do not have again any refraction to produce, up to passing second diffusion layer 15 ', because the density of air is far below second diffusion layer 15 ', so light leaves with the first path A1.Hence one can see that, and second path A 2 and the formed second angle a2 of normal N are less than by the first path A1 and the formed first angle a1 of normal N, and for the user, the first visual angle a is formed by the first sight line A and normal N.Therefore, though increase the visual angle by first, second diffusion layer 11 ', 15 ' traditionally its useful part is arranged, yet its shortcoming is that the change in travel direction of light is various, the spinoff that more or less can cause contrast to reduce.
Please refer to Fig. 3, it is the synoptic diagram that the visual angle of the display of Fig. 2 changes contrast, wherein can see known technology in complete all visual angles of 360 deg, the variation of its contrast can be divided into three zones, and promptly the first contrast district C1 represents that contrast value is 18 to 30, the second contrast district C2 represents that contrast value is 30 to 500, the 3rd contrast district C3 represents contrast value 500 to more than 1000, thus figure as can be known, near 80 degree of visual angle, only less than 30 degree, suitable is low for contrast.
In addition, also there is the mode of the flange Buddhist nun lens (Fresnel lens) that on display, are sticked to reach the mode that increases the visual angle, yet flange Buddhist nun lens itself also have the problem of aberration (aberration), for example chromatic aberation, crooked aberration or the like, therefore can be described as the more problems of manufacturing, and flange Buddhist nun lens are owing to the stairstepping of self, and therefore the diffusion that causes when light penetrates and pass also has the problem that reduces contrast to exist.
Therefore as can be known by above-mentioned each known displays, these modes are except the lifting degree on the two side-looking angles is still limited, also can't be improved at dark attitude colour cast (color shift) effect that LCD had, in addition, the enhancement of contrast (contrast) on the two side-looking angles and color saturation aspect is also very limited.
Therefore, the inventor has researched and proposed the present invention's " polarizing appliance that is used for display " in view of the defective of known technology through concentrated, below is brief description of the present invention.
Summary of the invention
Fundamental purpose of the present invention is in order to improve the angle of visibility scope of display.
Another object of the present invention is for the contrast of improving display, dark attitude colour cast (color shift) effect, and improves its color saturation.
Main design of the present invention is to form a low-index layer and at least one diffusion layer on the display panel of display in regular turn.
According to main design of the present invention, a kind of display is proposed, comprise at least: one first Polarizer (polarizer); One display panel is positioned on this first Polarizer; One second Polarizer is positioned on this display panel; And a refractor, be positioned on this second Polarizer; Wherein, the refractive index of this refractor is lower than the refractive index of this second Polarizer, to improve the angle of visibility scope of this display.
According to another design of the present invention, this display panel is a display panels.
According to a design more of the present invention, this refractor is made of the low material of refractive index of this second Polarizer of a refractive index ratio.
According to another design of the present invention, this material is an air.
According to another design of the present invention, also be provided with at least one first diffusion layer and at least one second diffusion layer on this refractor.
According to another design of the present invention, this first diffusion layer is made of a plurality of particulates and a filling material, and wherein these a plurality of particulates are nanoparticle, and this filling material is a colloid; And/or this second diffusion layer can be following arbitrary option: triacetate fiber (TAC, Triactyl Cellulose), polycarbonate (PC, Polycarbonate), polyvinyl alcohol (PVA) (PVA, Polyvinyl Alcohol), polyethersulfone (PES, PolyetherSultone), polyethyleneterephthalate (PET, Polyethylene terephthalate), cycloolefine polymer (COP, Cyclic Olefin Polymer), cyclenes co-polymer (COC, Cyclic OlefinCopolymer).
According to another design of the present invention, a kind of polarizing appliance that is applied to display is proposed, comprising: a Polarizer; And a refractor, be positioned on this Polarizer; Wherein, the refractive index of this refractor is lower than this Polarizer, to improve the angle of visibility scope of this display.
According to a design more of the present invention, this display is a LCD or a plasma display.
According to another design of the present invention, this refractor is made of the low material of refractive index of this second Polarizer of a refractive index ratio, and this material can be an air.
According to another design of the present invention, also be provided with at least one first diffusion layer and at least one second diffusion layer on this refractor.
According to a design more of the present invention, a kind of method for making of above-mentioned polarizing appliance is proposed, it is characterized in that on this Polarizer, forming this refractor.
According to a design more of the present invention, a kind of method for making of above-mentioned polarizing appliance is proposed, wherein this first diffusion layer is made of a plurality of particulates and a filling material, and wherein these a plurality of particulates are nanoparticle, and this filling material is a colloid; And/or these second diffusion series of strata can be following arbitrary option: triacetate fiber (TAC, Triactyl Cellulose), polycarbonate (PC, Polycarbonate), polyvinyl alcohol (PVA) (PVA, PolyvinylAlcohol), polyethersulfone (PES, Polyether Sulfone), polyethyleneterephthalate (PET, Polyethylene terephthalate), cycloolefine polymer (COP, Cyclic Olefin Polymer), cyclenes co-polymer (COC, Cyclic Olefin Copolymer).
By following detailed description, will be of value to and more in depth understand the present invention.
Description of drawings
Fig. 1 is the sectional view of the LCD of No. the 00343291st, TaiWan, China patent disclosure;
Fig. 2 is known display sectional view;
Fig. 3 is the synoptic diagram that the visual angle of the display of Fig. 2 changes contrast;
Fig. 4 has the display Polarizer of viewing angle compensation device for the present invention; And
Fig. 5 is the synoptic diagram that the visual angle of display of the present invention changes contrast.
Wherein, description of reference numerals is as follows:
1: LCD 10: Polarizer 11: diffusion layer
11 ': the first diffusion layer 111: particulate 112: filling material
12: liquid crystal panel 13: Polarizer 14: the backlight group
141: prism 142: light source 15 ': the second diffusion layer
16: refractor N: normal A: first sight line
A: the first visual angle A1: the first path a1: first angle
A2: the second path a2: second angle A 3: Third Road footpath
A3: third angle degree B: the second sight line b: second visual angle
Embodiment
Please refer to Fig. 4, it wherein has a liquid crystal panel 12, second Polarizer 10, refractor 16, first diffusion layer 11 ' and one second diffusion layer 15 ' successively for the display Polarizer that the present invention has the viewing angle compensation device on backlight group 14.
When light when backlight group 14 is sent, in the liquid crystal panel 12 and second Polarizer 10, advance with second path A 2, yet when light advance to the present invention during exclusive refractor 16, because first refractive index that second refractive index that this refractor 16 is had is had less than this second Polarizer, so according to when light when the high material of refractive index enters the low material of refractive index, the physical phenomenon of light meeting off-normal, when therefore light penetrates refractor 16, the Third Road footpath A3 and the formed third angle degree of the normal N a3 of light will be greater than the second angle a2, afterwards, light enters first diffusion layer 11 ' and one second diffusion layer, 15 ' Shi Zehui again and is partial to normal N again and advances with second path A 2, when not excessive light penetrates air, then again can off-normal N and advance with the first path A1, and the first angle a1 between the normal N and the first path A1 is greater than the second angle a2.Therefore, when light after backlight group 14 penetrates liquid crystal panel 12, Polarizer 10, refractor 16, first diffusion layer 11 ' and one second diffusion layer 15 ' successively, form the second sight line B at last, and the first visual angle a that known technology disclosed of the second visual angle b between the second sight line B and the normal N and Fig. 2 is obviously many greatly, has so just reached the purpose that the present invention wants to compensate the visual angle.
If want to increase the refraction angle of light from second Polarizer 10 to refractor 16, will make second refractive index as far as possible less than first refractive index, wherein a kind of mode is exactly to reduce the density of refractor 16, so refractor 16 is made of air, because so the refraction angle of the very low light of atmospheric density from second Polarizer 10 to refractor 16 can reach high refraction angle, certainly, because air is main constituent with oxygen and nitrogen, if with the less pure gas molecular composition of molecule, the density of refractor 16 is more reduced, and then make the refraction angle of light can be bigger from second Polarizer 10 to refractor 16, make the second visual angle b to strengthen.
But, for now, the material of 16 low-refractions that can find of refractor, its refractive index value is greatly between 1.3 to 1.4, and second Polarizer 10, first diffusion layer 11 ' and one second diffusion layer, 15 ' this three's refractive index approximately is more than 1.5, so can reach the effect that increases the visual angle really by the difference of refractive index.
In addition; with regard to Fig. 4; one first diffusion layer 11 ' can only be arranged with the protection refractor 16 of holding concurrently outside refractor 16; in other words; hold air or the less pure gas molecule of molecule with formed space between first diffusion layer 11 ' and the Polarizer 10, naturally form a refractor 16.
Refer again to Fig. 5, wherein visible the present invention is in complete all visual angles of 360 deg, the variation of its contrast can be divided into three zones, promptly the first contrast district C1a represents that contrast value is 50 to 60, the second contrast district C2a represents that contrast value is 60 to 300, the 3rd contrast district C3a represent contrast value 300 to more than 650, figure as can be known thus, near 45 degree of visual angle, the first contrast district C1a compares with the first contrast district C1 of Fig. 3, contrast significantly is promoted to quite high level, and the contrast effect promoting is near twice, and at the visual angle positions of 80 degree, shown in Figure 5 is to drop in the second contrast district C2a, that is to say 60 to 300 degree, with technique known Comparatively speaking surprising lifting is arranged, this is the phenomenon from not had on those known LCD shown in Figure 3.
In addition, the viewing angle compensation device among the present invention can apply to the flat-panel monitor of LCD, plasma panel or other kind, and all can obtain the effect at suitable increase visual angle.
Though but refractor 16 has increased the visual angle, just increased the contrast when seeing display from the side, but might reduce the contrast of centre sight line, with Fig. 5, Centromedian contrast is the 3rd contrast district C3a, contrast value then surpasses 650, though lack than 1000 of Fig. 2, yet this also need not to pay special attention under the overwhelming majority's situation, especially for the display of family expenses, comprise LCD TV and plasm TV etc., it is generally used for many people and together views and admires, and its area is much larger than the employed display pannel of personal computer usually, so keep central authorities and the visual effect of side direction for example contrast make it can keep close degree, than causing the contrast rapid deterioration of side direction sight line more important for the contrast of keeping central authorities, moreover the contrast that will further promote integral display also has alternate manner to realize, so this is not a weakness of the present invention, furthered side and Centromedian contrast numerical value of the present invention is only advantage of the present invention on the contrary, so this also is one of the present invention's effect that can realize.And can reach the present invention of this effect owing to use refractor 16 that the phenomenon of the dark attitude colour cast of display can be reduced significantly, these are obvious good more a lot of than known display effect, this is helpful to the side direction sight line, that is to say the effect that has reached viewing angle compensation.This shows that though particularly suitable of the present invention is on the display of height contrast, so the reduction of central contrast, but the side direction contrast increases substantially, both dwindle at gap, and this is not a problem for the display of height contrast (hard contrast just), is very big advantage on the contrary.
Those of ordinary skills can make various modifications and not deviate from the claim that the present patent application claims are limited the present invention.
Claims (11)
1. display comprises:
One first Polarizer;
One display panel is positioned on this first Polarizer;
One second Polarizer is positioned on this display panel, and this second Polarizer has one first refractive index; And
One refractor is positioned on this second Polarizer, and this refractor has one second refractive index;
Wherein, this second refractive index is less than this first refractive index, thereby can improve the angle of visibility scope of this display.
2. display as claimed in claim 1, wherein this display panel is a display panels.
3. display as claimed in claim 1, wherein this refractor is made of the low material of refractive index of this second Polarizer of a refractive index ratio.
4. display as claimed in claim 3, wherein this material is an air.
5. display as claimed in claim 1 wherein also is provided with at least one first diffusion layer and at least one second diffusion layer on this refractor.
6. display as claimed in claim 5, wherein:
This first diffusion layer is made of a plurality of particulates and a filling material, and wherein these a plurality of particulates are nanoparticle, and this filling material is a colloid; And/or
This second diffusion layer can be following arbitrary option: triacetate fiber, polycarbonate, polyvinyl alcohol (PVA), polyethersulfone, polyethyleneterephthalate, cycloolefine polymer, cyclenes co-polymer.
7. polarizing appliance that is applied to display comprises:
One Polarizer has one first refractive index; And
One refractor has one second refractive index, and is positioned on this Polarizer;
Wherein, this second refractive index is lower than this first refractive index, thereby can improve the angle of visibility scope of this display.
8. polarizing appliance as claimed in claim 7, wherein this display is a LCD or a plasma display.
9. polarizing appliance as claimed in claim 7, wherein this refractor is made of the low material of refractive index of this second Polarizer of a refractive index ratio.
10. polarizing appliance as claimed in claim 7, wherein this refractor is made of air.
11. polarizing appliance as claimed in claim 7 wherein also is provided with at least one first diffusion layer and at least one second diffusion layer on this refractor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101285678A CN100397193C (en) | 2005-11-30 | 2005-11-30 | Polarization device and display device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101285678A CN100397193C (en) | 2005-11-30 | 2005-11-30 | Polarization device and display device with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1979293A CN1979293A (en) | 2007-06-13 |
| CN100397193C true CN100397193C (en) | 2008-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101285678A Expired - Fee Related CN100397193C (en) | 2005-11-30 | 2005-11-30 | Polarization device and display device with same |
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| CN (1) | CN100397193C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773298A (en) * | 2016-12-26 | 2017-05-31 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416258B (en) * | 2018-07-27 | 2021-11-02 | 广东聚华印刷显示技术有限公司 | Display device and manufacturing method thereof |
| CN110634931A (en) * | 2019-09-27 | 2019-12-31 | 昆山国显光电有限公司 | Display panel and display device |
| CN112785926B (en) * | 2020-12-31 | 2023-04-14 | 上海天马微电子有限公司 | Cover plate, display panel and manufacturing method of cover plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0341415A (en) * | 1989-07-10 | 1991-02-21 | Toshiba Corp | Liquid crystal display device |
| JPH03103823A (en) * | 1989-09-19 | 1991-04-30 | Citizen Watch Co Ltd | Liquid crystal display device |
| CN1159600A (en) * | 1995-05-16 | 1997-09-17 | 索尼株式会社 | Optical satter for LCD device and making method |
| US6137556A (en) * | 1997-04-07 | 2000-10-24 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| CN1646981A (en) * | 2002-04-22 | 2005-07-27 | 皇家飞利浦电子股份有限公司 | Electro-optical display device |
-
2005
- 2005-11-30 CN CNB2005101285678A patent/CN100397193C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0341415A (en) * | 1989-07-10 | 1991-02-21 | Toshiba Corp | Liquid crystal display device |
| JPH03103823A (en) * | 1989-09-19 | 1991-04-30 | Citizen Watch Co Ltd | Liquid crystal display device |
| CN1159600A (en) * | 1995-05-16 | 1997-09-17 | 索尼株式会社 | Optical satter for LCD device and making method |
| US6137556A (en) * | 1997-04-07 | 2000-10-24 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| CN1646981A (en) * | 2002-04-22 | 2005-07-27 | 皇家飞利浦电子股份有限公司 | Electro-optical display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106773298A (en) * | 2016-12-26 | 2017-05-31 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1979293A (en) | 2007-06-13 |
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