CN103616784A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN103616784A CN103616784A CN201310665510.6A CN201310665510A CN103616784A CN 103616784 A CN103616784 A CN 103616784A CN 201310665510 A CN201310665510 A CN 201310665510A CN 103616784 A CN103616784 A CN 103616784A
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Abstract
The invention provides a liquid crystal display device which comprises a color filter glass substrate and an array substrate, wherein the color filter glass substrate comprises multiple black matrixes, and the array substrate is arranged opposite to the color filter glass substrate. The array substrate comprises a first electric conduction layer, a first passivation layer and a second electric condition layer, wherein a common electrode is arranged on the first electric conduction layer, the first passivation layer is located on the first electric conduction layer, the second electric conduction layer is located on the first passivation layer, and multiple sub-pixel electrodes and multiple common electrodes are arranged on the second electric conduction layer. The common electrodes are arranged between the adjacent sub-pixel electrodes and located under the black matrixes so that the electric field between adjacent sub-pixels can be improved, and then a Push Mura phenomenon can be reduced. Compared with the prior art, the common electrodes are additionally arranged on the second electric conduction layer and located under the black matrixes so that the IPS electric field between the adjacent sub-pixels can be improved, and the Push Mura phenomenon can be reduced. In addition, crosstalk between the sub-pixels can be reduced, besides, the liquid crystal efficiency of the edges of the sub-pixels can be improved, and the overall penetration rate is increased.
Description
Technical field
The present invention relates to a kind of display device, relate in particular to a kind of liquid crystal indicator of significantly improving picture display quality.
Background technology
In recent years; Thin Film Transistor-LCD (Thin Film Transistor Liquid Crystal Display; TFT-LCD) be widely used in portable type electronic product; the external environment of its use also becomes and becomes increasingly complex, and such as environment temperature, usually occurs significantly to change and product often can be touched or external impacts etc.Meanwhile, the requirement of people's counter plate display effect is also improving constantly.For meeting the demand, the manufacturing of TFT-LCD panel is the corresponding factory inspection standard that improved also.For example, Push mura(is without water of compaction ripple) detect as a test item before product export, its standard is very harsh especially.Here, mura mono-etymology is in Japanese, the inhomogenous phenomenon of the regional luminance while meaning a kind of liquid crystal display display frame or colourity.
In general, liquid crystal indicator has the liquid crystal material layer being folded between two plate bases conventionally, by changing the potential difference (PD) at liquid crystal material layer two ends, can change the anglec of rotation of the liquid crystal molecule in liquid crystal material layer, the light transmission that makes liquid crystal material layer changes and demonstrates different images.For example, the polarity of voltage that is applied to liquid crystal material layer two ends must reverse at set intervals, causes permanent destruction, also in order to avoid image remaining (image sticking) effect in order to avoid liquid crystal material to produce polarization.
In the prior art, liquid crystal indicator roughly comprises four kinds of type of drive: frame reversion (Frame Inversion), line reversion (Line Inversion), pixel inversion (Pixel Inversion) and some reversion (Dot Inversion).Particularly, when the mode with frame reversion drives liquid crystal indicator, the data-signal of each frame is identical polar, and and the data-signal of next frame be opposite polarity.Line reversion comprises row reversions (Column Inversion) and row reversion (Row Inversion).When the mode with row reversion drives liquid crystal indicator, the data-signal of each row and the data-signal of its adjacent column are opposite polarity.When the mode with row reversion drives liquid crystal indicator, the data-signal of every a line and the data-signal of its adjacent lines are opposite polarity.When the mode by pixel inversion drives liquid crystal indicator, the data-signal that the data-signal of each pixel is adjacent pixel is opposite polarity, but the data-signal of red sub-pixel, green sub-pixels and blue subpixels in same pixel has identical polar.When the mode with some reversion drives liquid crystal indicator, the data-signal that the data-signal of each sub-pixel is adjacent sub-pixel is opposite polarity.Because the type of drive of a reversion can provide best display quality, therefore the type of drive of some reversion has become the type of drive that current liquid crystal indicator is the most often used.
But, in existing some reversion or row inversion driving mode, between an adjacent sub-pixel and another sub-pixel, because data-signal polarity is contrary, tend to be accompanied by serious IPS(In-Plane Switching) transverse electric field effect, and then produce Push Mura phenomenon.Current a solution is to be, pixel electrode spacing between adjacent subpixels is strengthened, and makes it each other can be too not approaching, but this can reduce the edge liquid crystal efficiency in sub-pixel, causes the loss of penetrance.
In view of this, how to design a kind of liquid crystal indicator of novelty, to eliminate the push mura phenomenon in available liquid crystal display device, the display quality of improving picture, is a person skilled problem urgently to be resolved hurrily in the industry.
Summary of the invention
For liquid crystal indicator of the prior art existing above-mentioned defect in use, the invention provides a kind of novelty, the liquid crystal indicator of improving picture display quality significantly.
According to one aspect of the present invention, a kind of liquid crystal indicator is provided, comprising:
One colored filter glass substrate, comprises a plurality of black matrixes; And
Array basal plate, is oppositely arranged with described colored filter glass substrate, comprising:
One first conductive layer, is positioned at the top of a flatness layer, and described the first conductive layer arranges a common electrode;
One first passivation layer, is positioned at the top of described the first conductive layer; And
One second conductive layer, is positioned at the top of described the first passivation layer, and described the second conductive layer is provided with a plurality of pixel electrodes and a plurality of common electrode,
Wherein, described common electrode is arranged between adjacent pixel electrode, and described common electrode be positioned at described black matrix under, by described common electrode, improve the electric field between adjacent subpixels, thereby reduce without water of compaction ripple.
In an embodiment therein, described the first conductive layer and described the second conductive layer are tin indium oxide (ITO) material.
In an embodiment therein, described liquid crystal indicator adopts some reversion (Dot Inversion) mode to drive.
In an embodiment therein, described liquid crystal indicator adopts row reversion (Column Inversion) mode to drive.
In an embodiment therein, the current potential of a pixel electrode adjacent one another are is that the current potential of one first voltage and another pixel electrode is a second voltage, and the current potential of described common electrode is 1/2nd of the first voltage and second voltage difference.For example, described the first voltage is 8V, and second voltage is 0V, and the voltage of described common electrode is 4V.
In an embodiment therein, described colored filter glass substrate also comprises: a plurality of pixels, each pixel has a red sub-pixel, a green sub-pixels and a blue subpixels, wherein, described red sub-pixel has a red photoresist, described green sub-pixels has a green photoresist, and described blue subpixels has a blue photoresist, and described black matrix is between arbitrary neighborhood sub-pixel photoresist separately; One flat seam, is positioned at the top of described red photoresist, described green photoresist and described blue photoresist; And a plurality of photoresistance septs (PS), each photoresistance sept is positioned at the top of described flat seam, and be all arranged on described red photoresist, described green photoresist or described blue photoresist directly over.
In an embodiment therein, in each pixel, the respectively corresponding sub-photoresistance sept of red sub-pixel and green sub-pixels, the corresponding key light resistance sept of blue subpixels, the height of this key light resistance sept is greater than the height of this sub-photoresistance sept.
In an embodiment therein, described array base palte also comprises: a transparency carrier; One gate insulator, is positioned at the top of described transparency carrier; And one second passivation layer, between described gate insulator and described flatness layer.
In an embodiment therein, described liquid crystal indicator is a ultraphotic angle high-resolution (Advanced Hyper Viewing Angle, AHVA) liquid crystal display.
Adopt liquid crystal indicator of the present invention, its colored filter glass substrate comprises a plurality of black matrixes, the array base palte being oppositely arranged with this colored filter glass substrate comprises the first conductive layer, the first passivation layer and the second conductive layer successively, wherein, the second conductive layer is provided with a plurality of pixel electrodes and a plurality of common electrode, each common electrode be arranged between adjacent subpixels electrode and be positioned at black matrix under, thereby can improve the Electric Field Distribution between adjacent subpixels by common electrode, the Push Mura while reducing picture disply.Than prior art, the present invention increases common electrode under black matrix at the second conductive layer, to improve the IPS electric field between adjacent subpixels, reduces Push Mura phenomenon.In addition, because IPS electric field of the present invention is only present in the inside of single sub-pixel, both can alleviate crosstalking between adjacent subpixels (Crosstalk) and Push Mura phenomenon, and can promote again the liquid crystal efficiency at sub-pixel edge, and then increase whole penetrance.
Accompanying drawing explanation
Reader, after having read the specific embodiment of the present invention with reference to accompanying drawing, will become apparent various aspects of the present invention.Wherein,
Figure 1A illustrates the schematic diagram of data-signal polarity of a kind of type of drive of liquid crystal indicator of the prior art;
Figure 1B illustrates the schematic diagram of data-signal polarity of the another kind of type of drive of liquid crystal indicator of the prior art;
Fig. 2 illustrates the structural representation of the colored filter glass substrate of liquid crystal indicator;
Fig. 3 illustrates in the liquid crystal indicator of prior art, the IPS Electric Field Distribution schematic diagram between adjacent subpixels;
Fig. 4 illustrates the structural representation according to the array base palte of the liquid crystal indicator of an embodiment of the present invention; And
Fig. 5 illustrates in the liquid crystal indicator of Fig. 4, each sub-pixel IPS Electric Field Distribution schematic diagram separately.
Embodiment
For the technology contents that the application is disclosed is more detailed and complete, can be with reference to accompanying drawing and following various specific embodiments of the present invention, in accompanying drawing, identical mark represents same or analogous assembly.Yet those of ordinary skill in the art should be appreciated that the embodiment that hereinafter provided is not used for limiting the scope that the present invention is contained.In addition, accompanying drawing, only for being schematically illustrated, is not drawn according to its life size.
With reference to the accompanying drawings, the embodiment of various aspects of the present invention is described in further detail.
Figure 1A illustrates the schematic diagram of data-signal polarity of a kind of type of drive of liquid crystal indicator of the prior art, and Figure 1B illustrates the schematic diagram of data-signal polarity of the another kind of type of drive of liquid crystal indicator of the prior art.
With reference to Figure 1A, schematically pel array comprises four lines six row, for example, and row Line1～Line4 and row C11～C13, C21～C23.Wherein, every row has two pixels, and each pixel comprises red sub-pixel (Red), green sub-pixels (Green) and blue subpixels (Blue).With the 1st behavior example, C11 classifies the red sub-pixel R1 in first pixel as, and C12 classifies the green sub-pixels G1 in first pixel as, and C13 classifies the blue subpixels B1 in first pixel as.C21 classifies second red sub-pixel R2 in pixel as, and C22 classifies second green sub-pixels G2 in pixel as, and C23 classifies second blue subpixels B2 in pixel as.
The liquid crystal indicator of Figure 1A adopts some inversion mode to be driven for pel array.As previously mentioned, when point reversion drives, the data-signal that the data-signal of each sub-pixel is adjacent sub-pixel is opposite polarity.For instance, the data-signal of the sub-pixel R1 of the capable C11 row of Line1 is positive polarity, the data-signal that is positioned at the sub-pixel G1 of the capable C12 row of same a line and adjacent Line1 with it is negative polarity, and the data-signal that is positioned at the sub-pixel that same row and adjacent Line2 are capable with it is negative polarity.And for example, the data-signal of the sub-pixel R2 of the capable C21 row of Line1 is negative polarity, the data-signal that is positioned at the sub-pixel B1 of the capable C13 row of same a line and adjacent Line1 and the sub-pixel G2 of C22 row with it is positive polarity, and the data-signal that is positioned at the sub-pixel that same row and adjacent Line2 are capable with it is positive polarity.Because the type of drive of a reversion can provide best display quality, so this type of drive has become the type of drive that current liquid crystal indicator is the most often used.
With reference to 1B, schematically pel array also comprises four lines six row, that is, and and row Line1～Line4 and row C11～C13, C21～C23.The distributional class of its pel array is similar to Figure 1A, repeats no more herein.Difference is, the liquid crystal indicator of Figure 1B adopts row inversion mode to be driven for pel array.As previously mentioned, when using row inversion driving mode, the data-signal of each row and the data-signal of its adjacent column are opposite polarity.For example, the data-signal of the sub-pixel of C11 row is positive polarity, and the data-signal of the sub-pixel of the C12 row that are adjacent is negative polarity, and with the data-signal that C12 is listed as the sub-pixel of adjacent C13 row be positive polarity.From the above, in some reversion or row inversion driving mode, adjacent sub-pixel, because data-signal polarity is contrary, tends to be accompanied by serious IPS(In-Plane Switching) electric field, and then produce Push Mura phenomenon.
Fig. 2 illustrates the structural representation of the colored filter glass substrate of liquid crystal indicator.With reference to Fig. 2, this colored filter glass substrate also comprises a substrate 10, a plurality of pixel, a flat seam 30 and a plurality of photoresistance sept.Each pixel has a red sub-pixel, a green sub-pixels and a blue subpixels, wherein, red sub-pixel has a red photoresist (PR) 202, green sub-pixels has a green photoresist 204, blue subpixels has a blue photoresist 206, and black matrix B M is between arbitrary neighborhood sub-pixel photoresist separately.Flat seam (overcoat) 30 is positioned at the top of red photoresist 202, green photoresist 204 and blue photoresist 206.Photoresistance sept (photo spacer) comprises key light resistance sept and sub-photoresistance sept, and as shown in Figure 2, in each pixel, red sub-pixel 202 and green sub-pixels 204 be corresponding sub-photoresistance sept PS1 and PS2 respectively.The corresponding key light resistance of blue subpixels 206 sept PS, the height of this key light resistance sept PS is greater than the height of this sub-photoresistance sept PS1 and PS2.
Fig. 3 illustrates in the liquid crystal indicator of prior art, the IPS Electric Field Distribution schematic diagram between adjacent subpixels.
In conjunction with Fig. 2 and Fig. 3, red sub-pixel 202 respective pixel electrodes 402, green sub-pixels 204 respective pixel electrodes 404.The data-signal that pixel electrode 402 receives is positive polarity (Positive Frame), and the data-signal that pixel electrode 404 receives is negative polarity (Negative Frame).And pixel electrode 402 and pixel electrode 404 are positioned at the second conductive layer.Passivation layer 408 is set below the second conductive layer.In addition, the first conductive layer 406 is formed at the below of passivation layer 408.The first conductive layer 406 arranges common electrode, such as IGZO(indium oxide gallium zinc).
As can be seen from Figure 3, present the pixel electrode 402 of positive polarity and present between the pixel electrode 404 of negative polarity and can have great IPS electric field, having a strong impact on that this electric field causes is mainly reflected in, and general user, when using touch controllable function, there will be the bad situation of Push Mura.
Fig. 4 illustrates the structural representation according to the array base palte of the liquid crystal indicator of an embodiment of the present invention.
With reference to Fig. 4, liquid crystal indicator of the present invention, for example ultraphotic angle high-resolution (Advanced Hyper Viewing Angle, AHVA) liquid crystal display, also comprises the array basal plate being oppositely arranged with colored filter glass substrate.This array base palte comprises one first conductive layer 508, one first passivation layer 510 and one second conductive layer 60.
The first conductive layer 508 is positioned at the top of a flatness layer 506, and this first conductive layer arranges a common electrode.The first passivation layer 510 is positioned at the top of the first conductive layer 508.The second conductive layer 60 is positioned at the top of the first passivation layer 510.It needs to be noted, wish of the present invention is improved the Push Mura bad situation of user while using touch controllable function, in the second conductive layer 60, is provided with a plurality of pixel electrode Pixel and a plurality of common electrode 608.For example, the first conductive layer 508 and the second conductive layer 60 are tin indium oxide (ITO) material.
In one embodiment, this array base palte also comprises a transparency carrier 500, a gate insulator 502 and one second passivation layer 504.Wherein, gate insulator 502 is positioned at the top of transparency carrier 500.The second passivation layer 504 is positioned at the top of gate insulator 502.Flatness layer 506 is positioned at the top of the second passivation layer 504.In addition, at the second passivation layer 504, be also provided with metal level M2.
Fig. 5 illustrates in the liquid crystal indicator of Fig. 4, each sub-pixel IPS Electric Field Distribution schematic diagram separately.
In Fig. 5, red sub-pixel 702 respective pixel electrodes 802, green sub-pixels 704 respective pixel electrodes 804.The data-signal that pixel electrode 802 receives is positive polarity (Positive Frame), and the data-signal that pixel electrode 804 receives is negative polarity (Negative Frame).Be similar to Fig. 3, pixel electrode 802 and pixel electrode 804 are positioned at the second conductive layer.Passivation layer 808 is set below the second conductive layer.The first conductive layer 806 is formed at the below of passivation layer 808.The first conductive layer 806 arranges common electrode, such as IGZO(indium oxide gallium zinc).
In the present invention, in the second conductive layer, be also provided with common electrode 800, this common electrode 800 between adjacent pixel electrode 802 and 804, and this common electrode 800 be positioned at black matrix B M under.Easily know, after common electrode 800 is set, between pixel electrode 802 and pixel electrode 804, there is not IPS electric field, the substitute is, between common electrode 800 and pixel electrode 802, be formed with an IPS electric field, between common electrode 800 and pixel electrode 804, form another IPS electric field, therefore can improve the Electric Field Distribution between adjacent subpixels by common electrode 800, reduce without water of compaction ripple (Push Mura).In other words, the present invention only need set up a common electrode under black matrix B M, and the sub-pixel that IPS electric field is locked in to positive polarity is inner inner with the sub-pixel of negative polarity, makes can not influence each other between the sub-pixel of positive polarity and the sub-pixel of negative polarity.
In a specific embodiment, liquid crystal indicator of the present invention is suitable for an inversion driving mode or row inversion driving mode.
In a specific embodiment, the current potential of a pixel electrode 802 adjacent one another are be one first voltage (as, 8V) and the current potential of another pixel electrode 804 be a second voltage (as, 0V), and the current potential of common electrode 800 is 1/2nd of the first voltage and second voltage difference, i.e. 4V.
Adopt liquid crystal indicator of the present invention, its colored filter glass substrate comprises a plurality of black matrixes, the array base palte being oppositely arranged with this colored filter glass substrate comprises the first conductive layer, the first passivation layer and the second conductive layer successively, wherein, the second conductive layer is provided with a plurality of pixel electrodes and a plurality of common electrode, each common electrode be arranged between adjacent subpixels electrode and be positioned at black matrix under, thereby can improve the Electric Field Distribution between adjacent subpixels by common electrode, the Push Mura while reducing picture disply.Than prior art, the present invention increases common electrode under black matrix at the second conductive layer, to improve the IPS electric field between adjacent subpixels, reduces Push Mura phenomenon.In addition, because IPS electric field of the present invention is only present in the inside of single sub-pixel, both can alleviate crosstalking and Push Mura phenomenon between adjacent subpixels, and can promote again the liquid crystal efficiency at sub-pixel edge, and then increase whole penetrance.
Above, describe the specific embodiment of the present invention with reference to the accompanying drawings.But those skilled in the art can understand, without departing from the spirit and scope of the present invention in the situation that, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replacement all drop in the claims in the present invention book limited range.
Claims (10)
1. a liquid crystal indicator, is characterized in that, described liquid crystal indicator comprises:
One colored filter glass substrate, comprises a plurality of black matrixes; And
Array basal plate, is oppositely arranged with described colored filter glass substrate, comprising:
One first conductive layer, is positioned at the top of a flatness layer, and described the first conductive layer arranges a common electrode;
One first passivation layer, is positioned at the top of described the first conductive layer; And
One second conductive layer, is positioned at the top of described the first passivation layer, and described the second conductive layer is provided with a plurality of pixel electrodes and a plurality of common electrode,
Wherein, described common electrode is arranged between adjacent pixel electrode, and described common electrode be positioned at described black matrix under, by described common electrode, improve the electric field between adjacent subpixels, thereby reduce without water of compaction ripple.
2. liquid crystal indicator according to claim 1, is characterized in that, described the first conductive layer and described the second conductive layer are tin indium oxide material.
3. liquid crystal indicator according to claim 1, is characterized in that, described liquid crystal indicator adopts some inversion mode to drive.
4. liquid crystal indicator according to claim 1, is characterized in that, described liquid crystal indicator adopts row inversion mode to drive.
5. according to the liquid crystal indicator described in claim 3 or 4, it is characterized in that, the current potential of a pixel electrode adjacent one another are is that the current potential of one first voltage and another pixel electrode is a second voltage, and the current potential of described common electrode is 1/2nd of the first voltage and second voltage difference.
6. liquid crystal indicator according to claim 5, is characterized in that, described the first voltage is 8V, and second voltage is 0V, and the voltage of described common electrode is 4V.
7. liquid crystal indicator according to claim 1, is characterized in that, described colored filter glass substrate also comprises:
A plurality of pixels, each pixel has a red sub-pixel, a green sub-pixels and a blue subpixels, wherein, described red sub-pixel has a red photoresist, described green sub-pixels has a green photoresist, described blue subpixels has a blue photoresist, and described black matrix is between arbitrary neighborhood sub-pixel photoresist separately;
One flat seam, is positioned at the top of described red photoresist, described green photoresist and described blue photoresist; And
A plurality of photoresistance septs, each photoresistance sept is positioned at the top of described flat seam, and be all arranged on described red photoresist, described green photoresist or described blue photoresist directly over.
8. liquid crystal indicator according to claim 7, it is characterized in that, in each pixel, the respectively corresponding sub-photoresistance sept of red sub-pixel and green sub-pixels, the corresponding key light resistance sept of blue subpixels, the height of this key light resistance sept is greater than the height of this sub-photoresistance sept.
9. liquid crystal indicator according to claim 1, is characterized in that, described array base palte also comprises:
One transparency carrier;
One gate insulator, is positioned at the top of described transparency carrier; And
One second passivation layer, between described gate insulator and described flatness layer.
10. liquid crystal indicator according to claim 1, is characterized in that, described liquid crystal indicator is a ultraphotic angle high-resolution liquid crystal display.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310665510.6A CN103616784A (en) | 2013-12-10 | 2013-12-10 | Liquid crystal display device |
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| CN201310665510.6A CN103616784A (en) | 2013-12-10 | 2013-12-10 | Liquid crystal display device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106547141A (en) * | 2017-01-23 | 2017-03-29 | 武汉华星光电技术有限公司 | Display panels and liquid crystal indicator |
| US9632369B2 (en) | 2014-10-29 | 2017-04-25 | Boe Technology Group Co., Ltd. | Array substrate and manufacturing method thereof, as well as display device |
| CN113641051A (en) * | 2021-10-15 | 2021-11-12 | 惠科股份有限公司 | Array substrate and display panel |
-
2013
- 2013-12-10 CN CN201310665510.6A patent/CN103616784A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9632369B2 (en) | 2014-10-29 | 2017-04-25 | Boe Technology Group Co., Ltd. | Array substrate and manufacturing method thereof, as well as display device |
| CN106547141A (en) * | 2017-01-23 | 2017-03-29 | 武汉华星光电技术有限公司 | Display panels and liquid crystal indicator |
| CN113641051A (en) * | 2021-10-15 | 2021-11-12 | 惠科股份有限公司 | Array substrate and display panel |
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Application publication date: 20140305 |