CN101762919B - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
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- CN101762919B CN101762919B CN2009102495578A CN200910249557A CN101762919B CN 101762919 B CN101762919 B CN 101762919B CN 2009102495578 A CN2009102495578 A CN 2009102495578A CN 200910249557 A CN200910249557 A CN 200910249557A CN 101762919 B CN101762919 B CN 101762919B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 65
- 239000000758 substrate Substances 0.000 claims abstract description 111
- 239000003990 capacitor Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims description 41
- 238000000926 separation method Methods 0.000 claims description 34
- 125000006850 spacer group Chemical group 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 21
- 238000009413 insulation Methods 0.000 description 18
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000010409 thin film Substances 0.000 description 9
- 230000003321 amplification Effects 0.000 description 8
- 238000003199 nucleic acid amplification method Methods 0.000 description 8
- 239000012212 insulator Substances 0.000 description 7
- 238000000059 patterning Methods 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- RHZWSUVWRRXEJF-UHFFFAOYSA-N indium tin Chemical compound [In].[Sn] RHZWSUVWRRXEJF-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001887 tin oxide Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a liquid crystal display, comprising an active component array substrate, a capacitance electrode, a first dielectric layer, a plurality of color filter layers, an opposite-direction substrate, a liquid crystal layer and a plurality of spacers, wherein the active component array substrate comprises a substrate and a plurality of pixels arranged on the substrate, and each pixel comprises a first active component, a first pixel electrode and a storage capacitor electrically connected with the first active component; the capacitance electrode and the first pixel electrode form the storage capacitor; the first dielectric layer is arranged on the substrate to cover the first active component; the color filter layers are arranged on the first dielectric layer, each color filter layer is provided with a first opening which is positioned above the capacitance electrode to expose the first dielectric layer above the capacitance electrode, and each first pixel electrode is arranged on one color filter layer and in the corresponding first opening; the opposite-direction substrate is arranged above the active component array substrate; the liquid crystal layer is arranged between the active component array substrate and the opposite-direction substrate; and the spacers are arranged in the first opening.
Description
Technical field
The invention relates to a kind of display device, and particularly relevant for a kind of LCD.
Background technology
Advantages such as LCD has that high image quality, volume are little, in light weight, low voltage drive, low consumpting power and applied range, so it has become the main flow of display of new generation.Traditional display panels is made of the liquid crystal layer (liquid crystal layer) that a colored optical filtering substrates (color filter), a thin-film transistor array base-plate (thin filmtransistor array substrate, TFT array substrate) and are disposed between this two substrates.Yet the resolution of this kind display panels (resolution) is relatively poor, the aperture opening ratio of pixel (pixel) is lower, and colored optical filtering substrates has bit errors (misalignment) when engaging with thin-film transistor array base-plate easily.
In recent years, more proposed chromatic filter layer directly is integrated in (ColorFilter on Array on the thin-film transistor array base-plate, COA) or will deceive matrix is made in (Blackmatrix on Array on the thin-film transistor array base-plate, BOA) technology, system is upright with COA substrate or BOA substrate and another subtend substrate in batch that does not possess chromatic filter layer or black matrix layer, and between two substrates, insert liquid crystal molecule, to form display panels.Because chromatic filter layer is only directly to be formed on the thin-film transistor array base-plate, therefore can not produce bit errors.And this kind display panels can have preferable resolution and its aperture ratio of pixels is also higher.
Fig. 1 is the part sectioned view at the storage capacitors place of pixel in known a kind of LCD.As shown in Figure 1, LCD 100 comprises thin-film transistor array base-plate 110, subtend substrate 120 and liquid crystal layer 130, wherein has the chromatic filter layer 150 between pixel electrode 140 and substrate 112 on the thin-film transistor array base-plate 110.It should be noted that; in this kind display panels; in order to promote the storage capacitors value of pixel; usually the chromatic filter layer 150 that is positioned at capacitance electrode 142 tops of pixel can be removed fully, reduce distance between pixel electrode 140 and the capacitance electrode 142 to increase the storage capacitors value of pixel.
Yet, formed a sunk area owing to excavate the zone of chromatic filter layer 150 on the thin-film transistor array base-plate 110, as the X place among Fig. 1, therefore when the filling liquid crystal, must increase amount of liquid crystal to fill up the space of this sunk area, and easy defective when sunk area produces because of the liquid crystal filling in the process of filling liquid crystal, as bubble etc., and then cause showing uneven (mura).In addition, because near the rete offset the sunk area is big, be that the rete of capacitance electrode 142 tops and the rete of noncapacitive electrode 142 tops compare, therefore the toppling direction of liquid crystal molecule changes comparatively rapidly easily, cause LCD 100 when showing, to be easy to generate the phenomenon of liquid crystal misorientation (disclination), as the Y place among Fig. 1, cause light leakage phenomena what is more and reduce contrast, influence display quality.
Summary of the invention
The invention provides a kind of LCD, the phenomenon that it can reduce the use amount of liquid crystal material and reduce lqiuid crystal molecule tipping direction liquid crystal misorientation (disclination), and then promote display quality.
The present invention proposes a kind of LCD, and this LCD comprises: an active elements array substrates comprises: a substrate; A plurality of pixels are disposed on the substrate, and wherein each pixel comprises: one first active component; One first pixel electrode is electrically connected a storage capacitors with first active component; One capacitance electrode, wherein the capacitance electrode and first pixel electrode constitute a storage capacitors; One first dielectric layer is disposed on the substrate to cover first active component; A plurality of chromatic filter layers, be disposed on first dielectric layer, wherein each chromatic filter layer has first opening that is positioned at capacitance electrode top respectively exposing first dielectric layer of capacitance electrode top, and each first pixel electrode is disposed on one of them chromatic filter layer respectively and in the first corresponding opening; One subtend substrate is disposed at the active elements array substrates top; One liquid crystal layer is disposed between active elements array substrates and the subtend substrate; And a plurality of separation materials, be disposed in first opening.
In one embodiment of this invention, the first above-mentioned dielectric layer has a plurality of first contact holes, and each first pixel electrode is electrically connected with one of them first active component through one of them first contact hole respectively.At this moment, LCD can further comprise a plurality of first protrusions, and wherein each chromatic filter layer has second opening that is positioned at first contact hole top respectively, and each first protrusion is disposed at respectively in one of them second opening.
In one embodiment of this invention, above-mentioned LCD more comprises one second dielectric layer, be covered on the chromatic filter layer and first dielectric layer that first opening is exposed on, and first pixel electrode is disposed on second dielectric layer.At this moment, second dielectric layer for example contacts with first dielectric layer through first opening.
In one embodiment of this invention, each above-mentioned pixel more comprises second active component and second pixel electrode, and wherein second pixel electrode is electrically connected with second active component, and first pixel electrode and second pixel electrode are electrically insulated each other.At this moment, first dielectric layer for example further covers second active component, and second pixel electrode for example is disposed on the chromatic filter layer.
In one embodiment of this invention, the first above-mentioned dielectric layer has a plurality of second contact holes, and each second pixel electrode is electrically connected with one of them second active component through one of them second contact hole respectively.At this moment, LCD can more comprise a plurality of second protrusions, and wherein each chromatic filter layer has the 3rd opening that is positioned at second contact hole top respectively, and each second protrusion is disposed at respectively in one of them the 3rd opening.
In one embodiment of this invention, above-mentioned LCD more comprises at least one the 3rd protrusion, is disposed between the chromatic filter layer.And the 3rd protrusion for example is the strip separation material.
In one embodiment of this invention, above-mentioned subtend substrate has and uses electrode altogether.
The invention provides a kind of LCD, it comprises: an active elements array substrates comprises: a substrate; A plurality of pixels are disposed on the substrate, and wherein each pixel comprises: one first active component; One first pixel electrode is electrically connected a storage capacitors with first active component; One capacitance electrode, wherein the capacitance electrode and first pixel electrode constitute a storage capacitors; One first dielectric layer is disposed on the substrate to cover first active component; A plurality of chromatic filter layers are disposed on first dielectric layer, and wherein each chromatic filter layer has an opening that is positioned at electrode top respectively exposing first dielectric layer of electrode top, and each first pixel electrode is disposed at respectively on one of them chromatic filter layer; One subtend substrate is disposed at the active elements array substrates top; One liquid crystal layer is disposed between active elements array substrates and the subtend substrate; And a plurality of separation materials, be disposed in the described opening.
The present invention also provides a kind of LCD, comprising: an active elements array substrates comprises: a substrate; A plurality of pixels are disposed on the substrate, and wherein each pixel comprises: one first active component; One first pixel electrode is electrically connected a storage capacitors with first active component; One capacitance electrode, wherein the capacitance electrode and first pixel electrode constitute a storage capacitors; One first dielectric layer be disposed on the substrate covering first active component, and first dielectric layer has a contact hole; A plurality of chromatic filter layers are disposed on first dielectric layer, and wherein each chromatic filter layer has an opening respectively, and opening is in fact corresponding to contact hole, wherein, opening exposes an electrode, and each first pixel electrode is disposed on one of them chromatic filter layer respectively and opening in; One subtend substrate is disposed at the active elements array substrates top; One liquid crystal layer is disposed between active elements array substrates and the subtend substrate; And a plurality of separation materials, be disposed in the opening.
Based on above-mentioned, the present invention utilizes separation material to be arranged to be positioned in the active elements array substrates zone of non-demonstration effective coverage and rete depression, help to reduce the use amount of liquid crystal material, and separation material helps to improve the phenomenon of viewing area lqiuid crystal molecule tipping direction liquid crystal misorientation, reduces light leak, increases contrast and then promotes display quality.
For above-mentioned feature and advantage of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphic being described in detail below.
Description of drawings
Fig. 1 is the part sectioned view at the storage capacitors place of pixel in known a kind of LCD;
Fig. 2 A ' and Fig. 2 A " be respectively the sectional view of a kind of LCD of one embodiment of the invention;
Fig. 2 B is the top view of the LCD of Fig. 2 A ';
Fig. 3 A ' and Fig. 3 A " be respectively the another kind of diagrammatic cross-section of LCD in one embodiment of the invention;
Fig. 3 B ' and Fig. 3 B " be respectively a kind of local amplification profile at B place among Fig. 2 B;
Fig. 3 C ' is the local amplification profile at C place among Fig. 2 B;
Fig. 4 is the top view of LCD in one embodiment of the invention;
Fig. 5 A ' and Fig. 5 A " be a kind of local amplification profile at A place among Fig. 4;
Fig. 5 B ' and Fig. 5 B " be a kind of local amplification profile at B place among Fig. 4.
The main element symbol description:
100,200,300: LCD
110: thin-film transistor array base-plate
112,212: substrate
120,220: the subtend substrate
130,230: liquid crystal layer
140: pixel electrode
150,270: chromatic filter layer
142,256: capacitance electrode
210: active elements array substrates
240: separation material
222: common electrode
248: gate insulation layer
250: pixel
250d: drain electrode
250s: source electrode
250g: grid
251: data line
252: the first active components
254: the first pixel electrodes
254a: branch
254A: capacitance electrode portion
254B: display part
258: the second active components
258d: second drain electrode
259: the second pixel electrodes,
260: the first dielectric layers
280: the second dielectric layers
290A: first protrusion
290B: second protrusion
290C: the 3rd protrusion
Cst: storage capacitors
H1: first opening
H2: second opening
H3: the 3rd opening
W1: first contact hole
W2: second contact hole
Embodiment
Fig. 2 A ' is the sectional view of the LCD of one embodiment of the invention.Please refer to Fig. 2 A ', the LCD 200 of present embodiment comprises active elements array substrates 210, subtend substrate 220, liquid crystal layer 230 and a plurality of separation material 240, wherein subtend substrate 220 is disposed at active elements array substrates 210 tops, and subtend substrate 220 has altogether with electrode 222.In addition, liquid crystal layer 230 is disposed between active elements array substrates 210 and the subtend substrate 220.Specifically, the ad-hoc location of LCD 200 of the present invention on the active elements array substrates 210 with chromatic filter layer is provided with separation material 240 and fills up because of chromatic filter layer and hollow out formed depression, change the too rapid liquid crystal misorientation phenomenon that is produced with the toppling direction that reduces the liquid crystal use amount and improve because of liquid crystal molecule, for clearly demonstrating, will be that example describes in detail hereinafter with the active elements array substrates 210 that is illustrated among Fig. 2 A '.
Fig. 2 B is the top view of the LCD of Fig. 2 A ', and for clearly demonstrating, only show the top view of active elements array substrates 210 in the LCD 200 among Fig. 2 B, and omitted illustrating of retes such as subtend substrate 220, liquid crystal layer 230 and separation material 240, and the active elements array substrates among Fig. 2 A ' 210 can be considered the sectional view of Fig. 2 B along the AA profile line.Please refer to Fig. 2 A ' and Fig. 2 B, the active elements array substrates 210 of present embodiment comprises substrate 212, a plurality of pixel 250, first dielectric layer 260 and a plurality of chromatic filter layer 270, for clearly demonstrating, only shows a pixel 250 and describe in detail in Fig. 2 B.Pixel 250 is disposed on the substrate 212.Each pixel 250 comprises first active component 252, first pixel electrode 254 and capacitance electrode 256; first dielectric layer 260 is disposed on the substrate 212 to cover first active component 252; wherein first dielectric layer 260 for example is the protective seam that dielectric materials such as silicon nitride material are formed; and first pixel electrode 254 for example is the transparency conducting layer that materials such as indium tin oxide or indium-zinc oxide are formed, and has gate insulation layer 248 between first dielectric layer 260 and the substrate 212 in the present embodiment.Wherein, active component 252 serves as to implement example with two transistors, but is not limited thereto, also can one transistor or the transistor more than two, and each transistor has source electrode, drain electrode and grid.Source electrode is connected to that data line (indicate), drain electrode are connected to pixel electrode 254, grid is connected to sweep trace (indicating).Moreover sweep trace and data line are staggered to form a zone and are called pixel 250.In the present embodiment, first pixel electrode 254 has a plurality of 254a of branch that extend around central authorities are past, and first pixel electrode 254 is electrically connected a storage capacitors Cst with first active component 252.That is to say, the drain electrode of first active component 252 is connected to first pixel electrode 254, and first pixel electrode 254, first dielectric layer 260 and capacitance electrode 256 descend (capacitance electrode 256) to stack by last (first pixel electrode 254) to constitute a storage capacitors Cst.In detail, first pixel electrode 254 of present embodiment has the capacitance electrode portion 254A that is positioned at capacitance electrode 256 tops and overlaps with capacitance electrode 256, therefore the capacitance electrode portion 254A of first pixel electrode 254, first dielectric layer 260 and capacitance electrode 256 constitute a kind of metal layer/insulator layer/indium tin oxide (Metal/Insulator/ITO, MII) the storage capacitors Cst of kenel.
Please continue with reference to Fig. 2 A ' and Fig. 2 B, the chromatic filter layer 270 of active elements array substrates 210 is disposed on first dielectric layer 260, in other words, the active elements array substrates 210 of present embodiment directly chromatic filter layer 270 is integrated on the active elements array substrates (Color Filter on Array, COA).Particularly, each chromatic filter layer 270 has one respectively and is positioned at the first opening H1 of capacitance electrode 256 tops to expose first dielectric layer 260 of capacitance electrode 256 tops, and each first pixel electrode 254 is disposed on one of them chromatic filter layer 270 respectively and in the first corresponding opening H1, specifically, first pixel electrode 254 can be divided into display part 254B and capacitance electrode portion 254A, wherein make in various degree the function of toppling over and then reach demonstration according to the voltage difference between display part 254B and the common electrode 222 at the liquid crystal molecule above the display part 254B, the capacitance electrode portion 254A of first pixel electrode 254 then overlaps to use with capacitance electrode 256 and forms storage capacitors Cst, in order to stablize the voltage of first pixel electrode 254.
Specifically, shown in Fig. 2 A ' and Fig. 2 B, the present invention utilizes a plurality of separation materials 240 that are disposed among the first opening H1, and separation material 240 can have been filled up haply because of chromatic filter layer 270 and hollow out the space that is produced, therefore can significantly reduce the use amount of liquid crystal material, reduce manufacturing cost.On the other hand, because separation material 240 is compatible with the manufacturing process of original support separation material (not illustrating), wherein support separation material (not illustrating) in order to keep the gap between active elements array substrates 210 and the subtend substrate 220, therefore the deviser only needs further to get final product in first opening H1 place formation separation material 240 in the manufacturing process of original support separation material (not illustrating), and manufacturing process that need not be extra.In addition, the shape of separation material 240 can be controlled by light shield layout or fabrication process condition, as shown in Fig. 2 A ', because liquid crystal molecule can be toppled over along the edge of separation material, by suitably the side gradient of control gap thing can be so that the toppling direction (as the Z1 place) of the liquid crystal molecule of the adjacent gap thing side gradient be more consistent with the toppling direction (as the Z2 place) of other regional liquid crystal molecules, therefore suitably the gradient of control gap thing 240 helps to relax liquid crystal molecule and cause rapid toppling direction variation because of rete just changes institute near the first opening H1, avoid causing the phenomenon of liquid crystal misorientation, reduce light leak and increase contrast, and then promote display quality.
What deserves to be mentioned is, please be simultaneously with reference to Fig. 2 B and Fig. 2 A ', capacitance electrode 256 for example be with the source electrode 250s of first active component 252, drain electrode 250d be same rete (for example belonging to second metal level together), in other words, capacitance electrode 256 can utilize with light shield and make with source electrode 250s, the drain electrode 250d of first active component 252, at this moment, capacitance electrode 256 is between the gate insulation layer 248 and second dielectric layer 280.
Certainly, as Fig. 2 A " shown in; capacitance electrode 256 also can be that the grid 250g with first active component 252 is same rete (for example belonging to the first metal layer together); in other words; capacitance electrode 256 can utilize with light shield with the grid 250g of first active component 252 and make; at this moment, capacitance electrode 256 is between substrate 212 and gate insulation layer 248.That is to say that first pixel electrode 254, first dielectric layer 260, gate insulation layer 248 and capacitance electrode 256 descend (capacitance electrode 256) to stack by last (first pixel electrode 254) to constitute a storage capacitors Cst.In detail, first pixel electrode 254 of present embodiment has the capacitance electrode portion 254A that is positioned at capacitance electrode 256 tops and overlaps with capacitance electrode 256, therefore the capacitance electrode portion 254A of first pixel electrode 254, first dielectric layer 260, gate insulation layer 248 and capacitance electrode 256 constitute a kind of metal layer/insulator layer/indium tin oxide (Metal/Insulator/ITO, MII) the storage capacitors Cst of kenel.
Fig. 3 A ' is the another kind of diagrammatic cross-section of LCD in one embodiment of the invention, and wherein Fig. 3 A ' is the another kind variation example of Fig. 2 A '.Please refer to Fig. 3 A '; on the practice; based on considering on the manufacturing process or in the product design; can further between the chromatic filter layer 270 and first pixel electrode 254, set up second dielectric layer 280; in order to protection chromatic filter layer 270, so that chromatic filter layer 270 avoids the influence of follow-up manufacturing process (as solvent in the patterning manufacturing process of pixel electrode or the liquid crystal layer 230).Second dielectric layer 280 for example is the overlayer (overcoat layer) of light-transmitting materials.On first dielectric layer 260 that second dielectric layer 280 is covered on the chromatic filter layer 270 and the first opening H1 is exposed, and first pixel electrode 254 is disposed on second dielectric layer 280.Shown in Fig. 3 A ', second dielectric layer 280 sees through the first opening H1 and contacts with first dielectric layer 260.Therefore in the present embodiment, the capacitance electrode portion 254A of first pixel electrode 254, first dielectric layer 260, second dielectric layer 280 and capacitance electrode 256 common formation storage capacitors Cst.In addition, has gate insulation layer 248 between first dielectric layer 260 and the substrate 212 in the present embodiment.That is to say that gate insulation layer 248 is positioned on substrate 212 surfaces and is positioned under first dielectric layer 260 and the capacitance electrode 256.
What deserves to be mentioned is, please be simultaneously with reference to Fig. 2 B and Fig. 3 A ', capacitance electrode 256 for example be with the source electrode 250s of first active component 252, drain electrode 250d be same rete (for example belonging to second metal level together), in other words, capacitance electrode 256 can utilize with light shield and make with source electrode 250s, the drain electrode 250d of first active component 252, at this moment, capacitance electrode 256 is between the gate insulation layer 248 and second dielectric layer 280.
Certainly, as Fig. 3 A " shown in; capacitance electrode 256 also can be that the grid 250g with first active component 252 is same rete (for example belonging to the first metal layer together); in other words; capacitance electrode 256 can utilize with light shield with the grid 250g of first active component 252 and make; at this moment, capacitance electrode 256 is between substrate 212 and gate insulation layer 248.That is to say that first pixel electrode 254, second dielectric layer 280, first dielectric layer 260, gate insulation layer 248 and capacitance electrode 256 descend (capacitance electrode 256) to stack by last (first pixel electrode 254) to constitute a storage capacitors Cst.In detail, first pixel electrode 254 of present embodiment has the capacitance electrode portion 254A that is positioned at capacitance electrode 256 tops and overlaps with capacitance electrode 256, therefore the capacitance electrode portion 254A of first pixel electrode 254, second dielectric layer 280, first dielectric layer 260, gate insulation layer 248 and capacitance electrode 256 constitute a kind of metal layer/insulator layer/indium tin oxide (Metal/Insulator/ITO, MII) the storage capacitors Cst of kenel.
Fig. 3 B ' is the local amplification profile at B place among Fig. 2 B.Please be simultaneously with reference to Fig. 2 B and Fig. 3 B ', in the present embodiment, first dielectric layer 260 has a plurality of first contact hole W1, and first pixel electrode 254 sees through the first contact hole W1 and is electrically connected with the drain electrode 250d of first active component 252, and has gate insulation layer 248 between first dielectric layer 260 and the substrate 212 in the present embodiment.That is to say that gate insulation layer 248 is positioned on substrate 212 surfaces and is positioned under first dielectric layer 260.At this moment, LCD 200 can further comprise a plurality of first protrusion 290A.In more detail, each chromatic filter layer 270 has second an opening H2 who is positioned at first contact hole W1 top respectively, and each first protrusion 290A is disposed at respectively among one of them second opening H2.In like manner, the first protrusion 290A of present embodiment can and support separation material 240 in making simultaneously in the manufacturing process with separation material 240, therefore need not additionally increase manufacturing process.In addition, by suitably the side gradient of control gap thing can be so that the toppling direction (as the Z1 place) of the liquid crystal molecule of the adjacent gap thing side gradient be more consistent with the toppling direction (as the Z2 place) of other regional liquid crystal molecules, fill up the use amount that the first protrusion 290A in the second opening H2 can reduce liquid crystal, and the first protrusion 290A helps to make the toppling direction of top liquid crystal molecule to reach unanimity, and reduces the liquid crystal misorientation phenomenon when showing.
Certainly; as Fig. 3 B " shown in; also can further between the chromatic filter layer 270 and first pixel electrode 254, set up second dielectric layer 280; in order to protection chromatic filter layer 270, avoid the influence of follow-up manufacturing process (as solvent in the patterning manufacturing process of pixel electrode or the liquid crystal layer 230) further to make chromatic filter layer 270.That is to say that second dielectric layer 280 can be conformally formed on chromatic filter layer 270 and expose the drain electrode 250d of first active component 252 of first contact hole W1 below.Then, first pixel electrode 254 be formed on second dielectric layer 280 again, on the some of first active component, the 252 drain electrode 250d that exposed among the first contact hole W1 and by the first contact hole W1.
Fig. 3 C ' is the local amplification profile at C place among Fig. 2 B.Please be simultaneously with reference to Fig. 2 B and Fig. 3 C ', in the present embodiment, can be in further between the chromatic filter layer 270 above the signal wire, the 3rd protrusion 290C being set, shown in Fig. 3 C '.In detail, the 3rd protrusion 290C for example be the position above data line and/or sweep trace, in the present embodiment, being positioned at data line 251 tops with the 3rd protrusion 290C is that example describes.Shown in Fig. 2 B and Fig. 3 C ', chromatic filter layer 270 exposes first dielectric layer 260 of data line 251 tops of 250 of neighbors, and has gate insulation layer 248 between first dielectric layer 260 and the substrate 212 in the present embodiment.The 3rd protrusion 290C then is disposed on first dielectric layer 260 that is come out by chromatic filter layer 270 data line 251 tops, and the detailed description of the 3rd protrusion 290C will be in hereinafter explanation.Similarly, the use amount that the 3rd protrusion 290C between adjacent chromatic filter layer 270 can further reduce liquid crystal is filled up in utilization, and the 3rd protrusion 290C helps to make the toppling direction of top liquid crystal molecule to reach unanimity equally, only reduces the liquid crystal misorientation phenomenon when showing.
Therefore, the deviser also can utilize the described notion of the foregoing description according to the product actual demand, sets up separation material to reach the effect that reduces the liquid crystal use amount and improve liquid crystal misorientation phenomenon in first opening part of chromatic filter layer.Certainly, the deviser following embodiment that can also further arrange in pairs or groups on the basis of the foregoing description further reduces the liquid crystal use amount and further improves liquid crystal misorientation phenomenon.
For instance, Fig. 4 is the top view of LCD in one embodiment of the invention, and for clearly demonstrating, only shows the top view of active elements array substrates in the LCD among Fig. 4, and omitted illustrating of retes such as subtend substrate, liquid crystal layer.Fig. 5 A ' is the local amplification profile at A place among Fig. 4.Please be simultaneously with reference to Fig. 4 and Fig. 5 A ', the LCD 300 of present embodiment is similar with the LCD 200 of Fig. 4, and identical components represents that with same-sign relevant narration please refer to previous embodiment and repeats no more.Only, in the active elements array substrates 310 of present embodiment, further comprise second active component 258 and second pixel electrode 259 in the pixel 250, wherein second pixel electrode 259 is electrically connected with second active component 258, and first pixel electrode 254 and second pixel electrode 259 are electrically insulated each other, and in a kind of application, first pixel electrode 254 with big aperture opening ratio can be used as main display unit, second pixel electrode 259 then can be used as time display unit, but not as limit.First dielectric layer 260 further covers second active component 258, shown in Fig. 5 A ', the second drain electrode 258d that covers second active component 258 with first dielectric layer 260 is that representative illustrates that first dielectric layer 260 can cover second active component 258, and second pixel electrode 259 is disposed on the chromatic filter layer 270, and has gate insulation layer 248 between first dielectric layer 260 and the substrate 212 in the present embodiment.That is to say that gate insulator 248 is positioned on substrate 212 surfaces, and be positioned under first dielectric layer 260 and second active component, the 258 drain electrode 258d.
Please refer to Fig. 4 and Fig. 5 A ', first dielectric layer 260 has a plurality of second contact hole W2, and each second pixel electrode 259 is electrically connected with second active component 258 through the second contact hole W2.At this moment, LCD 300 can more comprise a plurality of second protrusion 290B.In detail, each chromatic filter layer 270 has the 3rd an opening H3 who is positioned at second contact hole W2 top respectively, and each second protrusion 290B is disposed among the 3rd opening H3.In like manner, the second protrusion 290B of present embodiment can and support separation material 240 in making simultaneously in the manufacturing process together with the aforementioned first protrusion 290A, separation material 240, therefore need not additionally increase manufacturing process, and, the height of separation material 240, the first protrusion 290A and the second protrusion 290B can be identical or different, looks closely product demand and decide.By this, fill up the use amount that the second protrusion 290B in the 3rd opening H3 can further reduce liquid crystal, and the second protrusion 290B helps equally to make the toppling direction of top liquid crystal molecule to reach unanimity, only reduce the liquid crystal misorientation phenomenon when showing.
Certainly; as Fig. 5 A " shown in; also can further between the chromatic filter layer 270 and second pixel electrode 259, set up second dielectric layer 280; in order to protection chromatic filter layer 270, avoid the influence of follow-up manufacturing process (as solvent in the patterning manufacturing process of pixel electrode or the liquid crystal layer 230) further to make chromatic filter layer 270.That is to say that second dielectric layer 280 can be conformally formed on chromatic filter layer 270 and expose the drain electrode 258d of second active component 258 of second contact hole W2 below.Then, second pixel electrode 259 be formed on second dielectric layer 280 again, on the some of second active component, the 258 drain electrode 258d that exposed among the second contact hole W2 and by the second contact hole W2.
In addition, Fig. 5 B ' is the local amplification profile at B place among Fig. 4.Please be simultaneously with reference to Fig. 4 and Fig. 5 B ', in the present embodiment, can be in further between the chromatic filter layer 270 above the signal wire, the 3rd protrusion 290C being set.In detail, the 3rd protrusion 290C for example be the position above data line and/or sweep trace, in the present embodiment, being positioned at data line 251 tops with the 3rd protrusion 290C is that example describes.Shown in Fig. 4 and Fig. 5 B ', chromatic filter layer 270 exposes first dielectric layer 260 of data line 251 tops of 250 of neighbors, and has gate insulation layer 248 between first dielectric layer 260 and the substrate 212 in the present embodiment.The 3rd protrusion 290C then is disposed on first dielectric layer 260 that is come out by chromatic filter layer 270 data line 251 tops, make the 3rd protrusion 290C observe and present strip from top view, as shown in Figure 4, thus the 3rd protrusion of present embodiment can be described as the strip separation material.In like manner, the 3rd protrusion 290C of present embodiment can and support separation material 240 in making simultaneously in the manufacturing process together with the aforementioned first protrusion 290A, the second protrusion 290B, separation material 240, therefore need not additionally increase manufacturing process, and, the height of separation material 240, the first protrusion 290A, the second protrusion 290B and the 3rd protrusion 290C can be identical or different, looks closely product demand and decide.By this, fill up the use amount that the 3rd protrusion 290C between adjacent chromatic filter layer 270 can further reduce liquid crystal, and the 3rd protrusion 290C helps to make the toppling direction of top liquid crystal molecule to reach unanimity equally, only reduces the liquid crystal misorientation phenomenon when showing.
Certainly; as Fig. 5 B " shown in; also can further between the chromatic filter layer 270 and second pixel electrode 259, set up second dielectric layer 280; in order to protection chromatic filter layer 270; avoid the influence of follow-up manufacturing process (as solvent in the patterning manufacturing process of pixel electrode or the liquid crystal layer 230) further to make chromatic filter layer 270; in the present embodiment, have the gate insulation layer 248 and second dielectric layer 280 between the 3rd protrusion 290C and the data line 251.
In sum, separation material is filled up at the chromatic filter layer place of hollowing out that LCD of the present invention is used in active elements array substrates, can significantly reduce the use amount of liquid crystal material.On the other hand, in certain embodiments, can be further help to improve liquid crystal misorientation phenomenon by shape, the gradient of control gap thing.Therefore, LCD of the present invention can effectively solve the phenomenon more and liquid crystal misorientation when showing of liquid crystal use amount in the known techniques, and then obtains high-quality LCD with lower cost of manufacture.
Though the present invention discloses as above with embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when doing a little change and retouching, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (16)
1. a LCD is characterized in that, described LCD comprises:
One active elements array substrates comprises:
One substrate;
A plurality of pixels are disposed on the described substrate, and wherein each described pixel comprises:
One first active component;
One first pixel electrode is electrically connected a storage capacitors with described first active component;
One capacitance electrode, the wherein said capacitance electrode and first pixel electrode constitute a storage capacitors;
One first dielectric layer is disposed on the described substrate to cover described first active component;
A plurality of chromatic filter layers, be disposed on described first dielectric layer, wherein each described chromatic filter layer has first opening that is positioned at described capacitance electrode top respectively exposing described first dielectric layer of described capacitance electrode top, and each described first pixel electrode is disposed on one of them chromatic filter layer respectively and in the first corresponding opening;
One subtend substrate is disposed at described active elements array substrates top;
One liquid crystal layer is disposed between described active elements array substrates and the subtend substrate; And
A plurality of separation materials are disposed in described first opening.
2. LCD as claimed in claim 1 is characterized in that, described first dielectric layer has a plurality of first contact holes, and each described first pixel electrode is electrically connected with one of them first active component through one of them first contact hole respectively.
3. LCD as claimed in claim 2, it is characterized in that, described LCD also comprises a plurality of first protrusions, wherein each described chromatic filter layer has second opening that is positioned at described first contact hole top respectively, and each described first protrusion is disposed at respectively in one of them second opening.
4. LCD as claimed in claim 1, it is characterized in that, described LCD also comprises one second dielectric layer, be covered on the described chromatic filter layer and described first dielectric layer that described first opening is exposed on, and described first pixel electrode is disposed on described second dielectric layer.
5. LCD as claimed in claim 4 is characterized in that, described second dielectric layer sees through described first opening and contacts with first dielectric layer.
6. LCD as claimed in claim 1 is characterized in that, described each pixel more comprises:
One second active component; And
One second pixel electrode is electrically connected with described second active component, and wherein said first pixel electrode and second pixel electrode are electrically insulated each other.
7. LCD as claimed in claim 6 is characterized in that, described first dielectric layer further covers described second active component, and described second pixel electrode is disposed on the described chromatic filter layer.
8. LCD as claimed in claim 7 is characterized in that, described first dielectric layer has a plurality of second contact holes, and each described second pixel electrode is electrically connected with one of them second active component through one of them second contact hole respectively.
9. LCD as claimed in claim 8, it is characterized in that, described LCD also comprises a plurality of second protrusions, wherein each described chromatic filter layer has the 3rd opening that is positioned at described second contact hole top respectively, and each described second protrusion is disposed at respectively in one of them the 3rd opening.
10. LCD as claimed in claim 1 is characterized in that, described LCD also comprises at least one the 3rd protrusion, is disposed between the described chromatic filter layer.
11. LCD as claimed in claim 10 is characterized in that, described the 3rd protrusion is the strip separation material.
12. LCD as claimed in claim 1 is characterized in that, described subtend substrate has uses electrode altogether.
13. a LCD is characterized in that, described LCD comprises:
One active elements array substrates comprises:
One substrate;
A plurality of pixels are disposed on the described substrate, and wherein each described pixel comprises:
One first active component;
One first pixel electrode is electrically connected a storage capacitors with described first active component;
One capacitance electrode, the wherein said capacitance electrode and first pixel electrode constitute a storage capacitors;
One first dielectric layer is disposed on the described substrate to cover described first active component;
A plurality of chromatic filter layers, be disposed on described first dielectric layer, wherein each described chromatic filter layer has an opening that is positioned at electrode top respectively exposing described first dielectric layer of described electrode top, and each described first pixel electrode is disposed at respectively on one of them chromatic filter layer;
One subtend substrate is disposed at described active elements array substrates top;
One liquid crystal layer is disposed between described active elements array substrates and the subtend substrate; And
A plurality of separation materials are disposed in the described opening.
14. LCD as claimed in claim 13, it is characterized in that, the drain electrode that the source electrode that the grid of described first active component is connected to one scan line, described first active component is connected to a data line, described first active component is connected to described first pixel electrode, wherein, described electrode is described sweep trace and/or described data line.
15. a LCD is characterized in that, described LCD comprises:
One active elements array substrates comprises:
One substrate;
A plurality of pixels are disposed on the described substrate, and wherein each described pixel comprises:
One first active component;
One first pixel electrode is electrically connected a storage capacitors with described first active component;
One capacitance electrode, the wherein said capacitance electrode and first pixel electrode constitute a storage capacitors;
One first dielectric layer be disposed on the described substrate covering described first active component, and described first dielectric layer has a contact hole;
A plurality of chromatic filter layers, be disposed on described first dielectric layer, wherein each described chromatic filter layer has an opening respectively, and described opening is in fact corresponding to described contact hole, wherein, described opening exposes an electrode, and each described first pixel electrode is disposed at respectively on one of them chromatic filter layer and described opening in;
One subtend substrate is disposed at described active elements array substrates top;
One liquid crystal layer is disposed between described active elements array substrates and the subtend substrate; And a plurality of separation materials, be disposed in the described opening.
16. LCD as claimed in claim 15 is characterized in that, described electrode is the drain/source of first active component.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102495578A CN101762919B (en) | 2009-12-25 | 2009-12-25 | Liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102495578A CN101762919B (en) | 2009-12-25 | 2009-12-25 | Liquid crystal display |
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| CN101762919A CN101762919A (en) | 2010-06-30 |
| CN101762919B true CN101762919B (en) | 2011-11-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI465814B (en) * | 2012-04-23 | 2014-12-21 | Au Optronics Corp | Liquid crystal display panel |
| CN105044973B (en) | 2015-08-27 | 2018-07-10 | 深圳市华星光电技术有限公司 | COA type liquid crystal display panels |
| CN113504680B (en) * | 2021-06-29 | 2023-03-31 | 惠科股份有限公司 | Array substrate, manufacturing method of array substrate and display panel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6278502B1 (en) * | 1998-09-28 | 2001-08-21 | International Business Machines Corporation | Pixel capacitor formed from multiple layers |
| WO2002061723A2 (en) * | 2001-02-02 | 2002-08-08 | Koninklijke Philips Electronics N.V. | Display device |
| TW200807110A (en) * | 2006-07-18 | 2008-02-01 | Chi Mei Optoelectronics Corp | Liquid crystal display |
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2009
- 2009-12-25 CN CN2009102495578A patent/CN101762919B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6278502B1 (en) * | 1998-09-28 | 2001-08-21 | International Business Machines Corporation | Pixel capacitor formed from multiple layers |
| WO2002061723A2 (en) * | 2001-02-02 | 2002-08-08 | Koninklijke Philips Electronics N.V. | Display device |
| TW200807110A (en) * | 2006-07-18 | 2008-02-01 | Chi Mei Optoelectronics Corp | Liquid crystal display |
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| CN101762919A (en) | 2010-06-30 |
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Effective date of registration: 20240117 Address after: 825 Waterscreek Avenue, Unit 250, Allen, Texas 75013, USA Patentee after: Optoelectronic Science Co.,Ltd. Address before: Hsinchu City, Taiwan, China Patentee before: AU OPTRONICS Corp. |