CN102479792B - Pixel array substrate and liquid display device - Google Patents
Pixel array substrate and liquid display device Download PDFInfo
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- CN102479792B CN102479792B CN201010573902.6A CN201010573902A CN102479792B CN 102479792 B CN102479792 B CN 102479792B CN 201010573902 A CN201010573902 A CN 201010573902A CN 102479792 B CN102479792 B CN 102479792B
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Abstract
The invention discloses a pixel array substrate and a liquid display device. The liquid display device comprises the pixel array substrate, an opposite substrate and a liquid crystal layer. The liquid crystal layer is placed between the pixel array substrate and the opposite substrate. The pixel array substrate is provided with a plurality of pixel electrodes. Each pixel electrode is provided with a first trunk, a second trunk, a plurality of first branches and a plurality of second branches. The first trunk and the second trunk are substantially and vertically connected with each other, and a first quartile, a second quartile, a third quartile and a fourth quartile are sequentially defined in the first trunk and the second trunk. Each first branch is connected with the first truck or the second truck. Azimuth angles of the first branches in the same quartile are substantially the same. Each second branch is connected with the plurality of the first branches. Each quartile is provided with at least one second branch.
Description
Technical field
The invention relates to a kind of substrate and display unit, and particularly relevant for a kind of image element array substrates and liquid crystal indicator.
Background technology
For improving rapidly of multimedia society, be mostly indebted to the tremendous progress of semiconductor element or display unit.With regard to display unit, have that high image quality, space utilization efficiency are good, the thin-film transistor LCD device (Thin Film Transistor Liquid Crystal Display, TFT-LCD) of low consumpting power, the advantageous characteristic such as radiationless becomes the main flow in market gradually.
Recently, the pixel electrode of part liquid crystal indicator can be designed to M shape, as Fig. 1.Yet, because the width of the each several part of pixel electrode 100 only has 3 microns to 5 microns conventionally, once have arbitrary broken string place (as R12 and R14), will cause the part 110 of pixel electrode 100 in floating state cannot swinging to of standard liquid crystal molecule and produce defect.In addition, experiment is found, adopts the liquid crystal indicator of the pixel electrode 100 of M shape still to have the problem that light transmittance is lower, causes the contrast of picture to promote.
Summary of the invention
The invention provides a kind of image element array substrates, can reduce the bad defect producing in manufacture process and cause the probability of the subregion of pixel electrode in floating state.
The invention provides a kind of liquid crystal indicator, the lower problem of light transmittance in the time of can solving the pixel electrode that adopts M shape.
Image element array substrates of the present invention has a plurality of pixel electrodes.Each pixel electrode has one first trunk, one second trunk, a plurality of the first branch and a plurality of the second branch.The first trunk and the second trunk be orthogonal connection and sequentially define a first quartile, one second quadrant, a third quadrant and a fourth quadrant in fact.Each first branch connects the first trunk or the second trunk.The azimuth of the first branch that is positioned at same quadrant is identical in fact.Each second branch connects a plurality of the first branches.All quadrants has at least one second branch.
Liquid crystal indicator of the present invention comprises aforesaid image element array substrates, a subtend substrate and a liquid crystal layer.
In one embodiment of this invention, the azimuth of the first branch of first quartile is between between 40 degree to 50 degree, the azimuth of the first branch of the second quadrant is between between 130 degree to 140 degree, the azimuth of the first branch of third quadrant is between between 220 degree to 230 degree, and the azimuth of the first branch of fourth quadrant is between between 310 degree to 320 degree.
In one embodiment of this invention, the second branch of all quadrants and the first branch of all quadrants vertical connection in fact.
In one embodiment of this invention, all quadrants has a plurality of the second branches, and the azimuth of the second branch that is positioned at same quadrant is identical in fact.In addition, the spacing between the second branch of same quadrant is for example 10 microns.
In one embodiment of this invention, the distance of the same side that is positioned at two adjacent the first branches of same quadrant is 5 microns to 7 microns.
In one embodiment of this invention, the width of each first branch is 2 microns to 3.5 microns.
In one embodiment of this invention, the width of each second branch is 2 microns to 10 microns.
In one embodiment of this invention, each pixel electrode has more a housing, and housing is around the surrounding of each pixel electrode and connect the first trunk, the second trunk and the first branch.
In one embodiment of this invention, liquid crystal indicator more comprises a backlight module, and image element array substrates and subtend substrate are disposed on backlight module.
Based on above-mentioned, in image element array substrates of the present invention and liquid crystal indicator, the probability of the subregion of the design of the second branch reduction pixel electrode in floating state, also promotes the contrast of display frame.
Accompanying drawing explanation
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated, wherein:
Fig. 1 looks schematic diagram on the part of known image element array substrates.
Fig. 2 is the partial cutaway diagram of the liquid crystal indicator of one embodiment of the invention.
Fig. 3 looks schematic diagram on the part of image element array substrates of liquid crystal indicator of Fig. 2.
Fig. 4 looks schematic diagram on the part of image element array substrates of another embodiment of the present invention.
Main element symbol description:
100: pixel electrode
110: the part of pixel electrode in floating state
R12, R14: broken string place
1000: liquid crystal indicator
1100,2100: image element array substrates
1110,2110: pixel electrode
1130: scan line
1140: data wire
1150: active element
1190: both alignment layers
1200: subtend substrate
1210: common electrode
1220: both alignment layers
1300: liquid crystal layer
1306: liquid crystal is stablized polymeric layer
1400: chromatic filter layer
1410: black matrix
1420: color filter film
1500: backlight module
1610,1620: polarizer
B110, B210: the first trunk
B120, B220: the second trunk
B130, B230: the first branch
B140, B240: the second branch
B250: housing
D1, D2: penetrating shaft
G12: spacing
G14: distance
G16, G18: width
I: first quartile
II: the second quadrant
III: third quadrant
IV: fourth quadrant
Embodiment
Fig. 2 is the partial cutaway diagram of the liquid crystal indicator of one embodiment of the invention.Please refer to Fig. 2, the liquid crystal indicator 1000 of the present embodiment comprises an image element array substrates 1100, a subtend substrate 1200 and a liquid crystal layer 1300.Image element array substrates 1100 has a plurality of pixel electrodes 1110, in Fig. 2, slightly with individual layer, represents a plurality of pixel electrodes 1110.Subtend substrate 1200 has a common electrode 1210 of pixel-oriented array base palte 1100.In addition a configurable both alignment layers 1190 on the image element array substrates 1100 of the present embodiment, and a configurable both alignment layers 1220 on subtend substrate 1200.Both alignment layers 1220 covers common electrode 1210 and near liquid crystal layer 1300, both alignment layers 1190 covers pixel electrode 1110 and close liquid crystal layer 1300.Liquid crystal layer 1300 is disposed between the pixel electrode 1110 of image element array substrates 1100 and the common electrode 1210 of subtend substrate 1200.If liquid crystal indicator 1000 adopts penetration or semi-penetration, semi-reflective design, can more comprise that a backlight module 1500 is so that area source to be provided, and image element array substrates 1100 is disposed on backlight module 1500 with subtend substrate 1200.
In addition, liquid crystal indicator 1000 can more comprise a chromatic filter layer 1400.Chromatic filter layer 1400 can comprise a black matrix 1410 and a plurality of color filter films 1420.Adjacent black matrix 1410 has opening and can accommodating color filter film 1420.The chromatic filter layer 1400 of the present embodiment is that to be disposed at image element array substrates 1100 be example, but chromatic filter layer 1400 is also configurable in subtend substrate 1200, and is positioned at 1210 of subtend substrate 1200 and common electrodes.
The liquid crystal indicator 1000 of the present embodiment more comprises that two liquid crystal stablize polymeric layer 1306, is formed on common electrode 1210 and pixel electrode 1110 and Fluid Contacting crystal layer 1300.Yet liquid crystal indicator 1000 also can only have a liquid crystal to stablize polymeric layer 1306, and configurable on common electrode 1210 or pixel electrode 1110.
When formation liquid crystal is stablized polymeric layer 1306, a plurality of reactive group monomers (not illustrating) that can first adulterate equably in liquid crystal layer 1300, these reactive group monomers can form liquid crystal after processing via polymerization stablize polymeric layer 1306 in the surface of image element array substrates 1100 and/or subtend substrate 1200.In the process of processing in polymerization, can apply electric field in liquid crystal layer 1300 via pixel electrode 1110 and common electrode 1210, so that the liquid crystal molecule of liquid crystal layer 1300 topples over according to produced electric field, utilize irradiation ultraviolet radiation, heating or other appropriate ways to make reactive group monomer polymerization stablize polymeric layer 1306 for liquid crystal simultaneously.Wherein, the mode of polymerization reaction base monomer is comply with the material behavior of used reactive group monomer and determine.Thus, near the dump angle of the liquid crystal molecule reactive group monomer after polymerization when remaining on reactive group monomer polymerization.Liquid crystal is stablized polymeric layer 1306 and is contributed to increase both alignment layers 1220 and the anchorage force of both alignment layers 1190 for the liquid crystal molecule of liquid crystal layer 1300, thus toppling direction that can stabilizing liquid crystal molecule, and promote the reaction speed of liquid crystal molecule.Whereby, on common electrode 1210, can not need to form any pattern but cover on subtend substrate 1200 comprehensively.So, liquid crystal indicator 1000 can have higher penetrance, and has faster reaction speed to improve ghost phenomena.
When liquid crystal, stablize polymeric layer 1306 and executing while being formed on both alignment layers 1220 and both alignment layers 1190 surperficial in alive situation, can be haply along the toppling direction of pixel electrode 1110 (further illustrating after a while) hint, form paradigmatic structure.Therefore, after putting on the electric field disappearance of liquid crystal layer 1300, both alignment layers 1220 is stablized polymeric layer 1306 with the liquid crystal in both alignment layers 1190 can retract predetermined orientation by liquid crystal molecule fast, and then assists the liquid crystal molecule of liquid crystal layer 1300 to carry out fast reaction next time.Thus, further shorten the reaction time of liquid crystal molecule, and further improved ghost phenomena.By liquid crystal, stablizing the help of polymeric layer 1306 can reach preferably orientation effect by lower cost, therefore can reduce the manufacturing cost of whole liquid crystal indicator 1000.
The liquid crystal indicator 1000 of the present embodiment also more comprises a polarizer 1610 and a polarizer 1620.Polarizer 1610 is disposed on the surface of subtend substrate 1200 away from liquid crystal layer 1300, that is polarizer 1610 lays respectively on two apparent surfaces of subtend substrate 1200 with liquid crystal layer 1300.Polarizer 1620 is disposed at image element array substrates 1100 away from the surface of liquid crystal layer 1300, that is polarizer 1620 lays respectively on two apparent surfaces of image element array substrates 1100 with liquid crystal layer 1300.Polarizer 1610 is for example all linear polarizer with polarizer 1620, respectively have penetrating shaft and optionally allow light pass through polarizer, and configuration mode is to make both penetrating shafts mutually orthogonal.Or polarizer 1610 can be also all circular polarizing disk with polarizer 1620.
Fig. 3 looks schematic diagram on the part of image element array substrates of liquid crystal indicator of Fig. 2.Please refer to Fig. 3, each pixel electrode 1110 of image element array substrates 1100 has a first trunk B110, the second trunk B120, a plurality of first B130 of branch and a plurality of the second B140 of branch.Each first B130 of branch connects the first trunk B110 or the second trunk B120.The first trunk B110 and the second trunk B120 be orthogonal connection and define four quadrants such as first quartile I, the second quadrant II, third quadrant III and fourth quadrant IV in fact.The pattern that the first trunk B110 of each pixel electrode 1110, the second trunk B120 and the first B130 of branch form is roughly M shape.The second trunk B120 of take is benchmark, and the azimuth of the first B130 of branch of all quadrants is roughly the same.The first B130 of branch is roughly that the plotted point by the first trunk B110 and the second trunk B120 is outwards radial.Each second B140 of branch connects a plurality of the first B130 of branch, and each quadrant has at least one second B140 of branch.In addition, the penetrating shaft direction of the polarizer 1610 that D1 is Fig. 2, the penetrating shaft direction of the polarizer 1620 that D2 is Fig. 2, both are mutually orthogonal, define respectively 0 degree and 90 degree.
Because the second B140 of branch has connected a plurality of the first B130 of branch, even if therefore pixel electrode 1110 breaks in technique, also mostly can the part arround broken string be connected via the second B140 of branch.Thus, significantly having reduced pixel electrode 1110 has the probability of subregion in floating state because technique is bad, to guarantee that the arrangement of liquid crystal molecule meets the requirements and preferably display quality is provided.In addition, via experiment, also find, increased after the arranging of the second B140 of branch, pixel electrode 1110 can provide liquid crystal molecule better standard power, and then promotes light transmittance and improve the contrast of display frame.
Referring again to Fig. 3, the image element array substrates 1100 of the present embodiment can have more multi-strip scanning line 1130, many data wires 1140 and a plurality of active element 1150, but in Fig. 3, only illustrates a scan line 1130 for example.Each active element 1150 is driven by corresponding scan line 1130.Each pixel electrode 1110 is electrically connected corresponding active element 1150, the signal being transmitted to receive corresponding data wire 1140.The material of the pixel electrode 1110 of the present embodiment is to adopt electrically conducting transparent material, for example indium tin oxide (ITO) or indium-zinc oxide (IZO), but be not limited to this.When the material of pixel electrode 1110 adopts indium-zinc oxide (IZO), easily obtain thinner live width.
In one embodiment of this invention, the azimuth of the first B130 of branch of all quadrants is sequentially 45 degree, 135 degree, 225 degree and 315 degree with respect to the second trunk B120.The setting of the penetrating shaft D1 of Polarizer 1610 and the penetrating shaft D2 of Polarizer 1620 is depended at the azimuth of the first B130 of branch of all quadrants, is preferably 45 degree of being separated by with each penetrating shaft D1 or D2.The second B140 of branch of all quadrants is connected with the first B130 of branch of all quadrants, better with vertical connection of the B130 of this first branch, therefore the azimuth of the second B140 of branch of all quadrants is sequentially 135 degree, 45 degree, 315 degree and 225 degree, but be not limited to this.It should be noted, the certain error amount of azimuth tolerable of indication herein, this error amount is for example ± 5 degree, preferred values be ± 1.5 to spend.The first B130 of branch of first quartile I of take is example, and its azimuth can be between between 40 degree to 50 degree; The azimuth of the first B130 of branch of the second quadrant II can be between between 130 degree to 140 degree; The azimuth of the first B130 of branch of third quadrant III can be between between 220 degree to 230 degree; The azimuth of the first B130 of branch of fourth quadrant IV can be between between 310 degree to 320 degree.In addition, in Fig. 3 the azimuth of each first B130 of branch and the B140 of each second branch not completely according to scale, only for representing the summary pattern of pixel electrode 1110.
Fig. 4 looks schematic diagram on the part of image element array substrates of another embodiment of the present invention.Please refer to Fig. 4, the image element array substrates 2100 of the present embodiment is similar to the image element array substrates 1100 of Fig. 3, at this, omits the introduction that it exists together mutually.Each pixel electrode 2110 of the image element array substrates 2100 of the present embodiment has a first trunk B210, the second trunk B220, a plurality of the first B230 of branch, a plurality of the second B240 of branch and a housing B250.Housing B250 is around the surrounding of pixel electrode 2110, and connects the first trunk B210, the second trunk B220, the first B230 of branch and at least one the second B240 of branch.In other embodiments, if the second B240 of branch does not extend to the surrounding of pixel electrode 2110, housing B250 does not connect the second B240 of branch.Each quadrant has a plurality of the second B240 of branch, and it is identical to be in fact positioned at the azimuth of the second B240 of branch of same quadrant.
By increasing the quantity of the second B240 of branch and increasing housing B250, image element array substrates 2100 has further reduced again makes pixel electrode 2110 have the probability of subregion in floating state because technique is bad, also provide liquid crystal molecule better standard power, and then promote light transmittance and improve the contrast of display frame.
The various sizes of the pixel electrode 2110 of the present embodiment are below described, but the present invention is not limited thereto.Spacing G12 between the second B240 of branch of same quadrant is for example 10 microns.The distance G14 of the same side that is positioned at two adjacent the first B230 of branch of same quadrant is 5 microns to 7 microns.The width G 16 of each first B230 of branch is 2 microns to 3.5 microns.The width G 18 of each second B240 of branch is 2 microns to 10 microns, and preferred values is 5 microns.
In sum, in image element array substrates of the present invention and liquid crystal indicator, utilize the second branch to connect a plurality of the first branches, can reduce broken string and cause the probability of the subregion of pixel electrode in floating state, also can provide the better standard power of liquid crystal molecule and the contrast of improving picture.
Although the present invention discloses as above with preferred embodiment; so it is not in order to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little modification and perfect, so protection scope of the present invention is worked as with being as the criterion that claims were defined.
Claims (19)
1. an image element array substrates, has a plurality of pixel electrodes, it is characterized in that, respectively this pixel electrode has:
One first trunk;
One second trunk, wherein this first trunk and this second trunk orthogonal connection and sequentially define a first quartile, one second quadrant, a third quadrant and a fourth quadrant in fact;
A plurality of the first branches, wherein each first branch connects this first trunk or this second trunk, and the azimuth of described the first branch that is positioned at same quadrant is identical in fact; And
A plurality of the second branches, wherein each second branch connects a plurality of described first branches, and all quadrants has the second branch described at least one, and described in one of them, two sides of the second branch are connected with described a plurality of the first branches that are positioned at same quadrant.
2. image element array substrates as claimed in claim 1, it is characterized in that, the azimuth of described first branch of this first quartile is between between 40 degree to 50 degree, the azimuth of described first branch of this second quadrant is between between 130 degree to 140 degree, the azimuth of described first branch of this third quadrant is between between 220 degree to 230 degree, and the azimuth of described first branch of this fourth quadrant is between between 310 degree to 320 degree.
3. image element array substrates as claimed in claim 1, is characterized in that, described first branch of this of all quadrants the second branch and all quadrants is vertical connection in fact.
4. image element array substrates as claimed in claim 1, is characterized in that, all quadrants has a plurality of described the second branches, and the azimuth of described the second branch that is positioned at same quadrant is identical in fact.
5. image element array substrates as claimed in claim 4, is characterized in that, the spacing between described second branch of same quadrant is 10 microns.
6. image element array substrates as claimed in claim 1, is characterized in that, the distance of the same side that is positioned at two adjacent the first branches of same quadrant is 5 microns to 7 microns.
7. image element array substrates as claimed in claim 1, is characterized in that, the width of each first branch is 2 microns to 3.5 microns.
8. image element array substrates as claimed in claim 1, is characterized in that, the width of each second branch is 2 microns to 10 microns.
9. image element array substrates as claimed in claim 1, is characterized in that, each pixel electrode has more a housing, and this housing is around the surrounding of each pixel electrode and connect this first trunk, this second trunk and described the first branch.
10. a liquid crystal indicator, comprises an image element array substrates, a subtend substrate and a liquid crystal layer, wherein:
This image element array substrates has a plurality of pixel electrodes, and wherein each pixel electrode has:
One first trunk;
One second trunk, wherein this first trunk and this second trunk orthogonal connection and sequentially define a first quartile, one second quadrant, a third quadrant and a fourth quadrant in fact;
A plurality of the first branches, wherein each first branch connects this first trunk or this second trunk, and the azimuth of described the first branch that is positioned at same quadrant is identical in fact; And
A plurality of the second branches, wherein each second branch connects a plurality of described first branches, and all quadrants has the second branch described at least one, and described in one of them, two sides of the second branch are connected with described a plurality of the first branches that are positioned at same quadrant;
This liquid crystal layer is disposed between this image element array substrates and this subtend substrate.
11. liquid crystal indicators as claimed in claim 10, it is characterized in that, the azimuth of described first branch of this first quartile is between 40 degree to 50, the azimuth of described first branch of this second quadrant is between between 130 degree to 140 degree, the azimuth of described first branch of this third quadrant is between between 220 degree to 230 degree, and the azimuth of described first branch of this fourth quadrant is between between 310 degree to 320 degree.
12. liquid crystal indicators as claimed in claim 10, is characterized in that, described first branch of this of all quadrants the second branch and all quadrants is vertical connection in fact.
13. liquid crystal indicators as claimed in claim 10, is characterized in that, all quadrants has a plurality of described the second branches, and the azimuth of described the second branch that is positioned at same quadrant is identical in fact.
14. liquid crystal indicators as claimed in claim 13, is characterized in that, be positioned at same quadrant described the second branch between spacing be 10 microns.
15. liquid crystal indicators as claimed in claim 10, is characterized in that, the distance of the same side that is positioned at two adjacent the first branches of same quadrant is 5 microns to 7 microns.
16. liquid crystal indicators as claimed in claim 10, is characterized in that, the width of each first branch is 2 microns to 3.5 microns.
17. liquid crystal indicators as claimed in claim 10, is characterized in that, the width of each second branch is 2 microns to 10 microns.
18. liquid crystal indicators as claimed in claim 10, is characterized in that, each pixel electrode has more a housing, and this housing is around the surrounding of each pixel electrode and connect this first trunk, this second trunk and described the first branch.
19. liquid crystal indicators as claimed in claim 10, is characterized in that, more comprise a backlight module, and this image element array substrates and this subtend substrate are disposed on this backlight module.
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| TWI519877B (en) * | 2014-09-22 | 2016-02-01 | 群創光電股份有限公司 | Display panel |
| KR102473098B1 (en) * | 2016-04-08 | 2022-12-01 | 티씨엘 차이나 스타 옵토일렉트로닉스 테크놀로지 컴퍼니 리미티드 | Liquid crystal display device |
| KR102388820B1 (en) * | 2018-02-05 | 2022-04-21 | 삼성디스플레이 주식회사 | Display apparatus |
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| TWI371641B (en) * | 2008-06-27 | 2012-09-01 | Au Optronics Corp | Liquid crystal display panel and manufacturing method thereof |
| KR101528494B1 (en) * | 2008-08-27 | 2015-06-12 | 삼성디스플레이 주식회사 | Array substrate, liquid crystal display panel having the same, and method of manufacturing the liquid crystal display panel |
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