CN101261408B - Pixel structure and liquid crystal display panel applying same and LCD device - Google Patents
Pixel structure and liquid crystal display panel applying same and LCD device Download PDFInfo
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- CN101261408B CN101261408B CN2007100854882A CN200710085488A CN101261408B CN 101261408 B CN101261408 B CN 101261408B CN 2007100854882 A CN2007100854882 A CN 2007100854882A CN 200710085488 A CN200710085488 A CN 200710085488A CN 101261408 B CN101261408 B CN 101261408B
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Abstract
The invention relates to a pixel structure, which comprises a first pixel electrode and a second pixel electrode. The second pixel electrode is arranged around the first pixel electrode and the electrodes of the first pixel and the second pixel are respectively supplied with low voltage and high voltage and the area of the first pixel electrode is larger than the area of the second pixel electrode.
Description
Technical field
The invention relates to a kind of dot structure and use its display panels and liquid crystal indicator, and particularly relevant for a kind of display panels and liquid crystal indicator that can reduce the dot structure of colour cast problem and use it.
Background technology
Traditional vertical multiple domain orientation (multi-domain vertical alignment, MVA) liquid crystal indicator is when display frame, because liquid crystal is all kept fixing inclination angle, make that the penetrance of light is different under the different visual angles (with the angle of picture normal), cause the colour mixture ratio of the light that penetrates colored filter to change.Therefore the user's color difference to some extent that when different visual angles is watched picture, can experience picture, just so-called colour cast (color shift) phenomenon.
In order to overcome this problem, just propose and to divide into two independently pixel electrodes in single dot structure, and supply respectively and different voltages.As shown in Figure 1, it illustrates traditional dot structure synoptic diagram.Dot structure 10 surrounds institute by two data lines 1 and two sweep traces 2 and constitutes, and memory capacitance 3 is distinguished pixel electrode 4a and pixel electrode 4b, supplies respectively and a high voltage and a low voltage.Because different voltage differences can make liquid crystal molecule produce different inclination angles, and the light emission rate of liquid crystal molecule under different visual angles reached unanimity, and reach the display effect of low colour cast.But this kind dot structure is owing to too in rule, cause the difference of pixel light emission rate because of different voltage differences easily, and see the generation of bright dark lattice point on human eye vision.
Therefore, a kind of serrate (chevron) dot structure just is suggested.As shown in Figure 2, it illustrates traditional serrate dot structure synoptic diagram.Dot structure 20 comprises pixel electrode 11 and the pixel electrode 12 that separates with slit 13, supplies respectively and a low voltage and a high voltage.Memory capacitance 14 is positioned at the central authorities of dot structure 20, sees through contact hole 14a, 14b and pixel electrode 11,12 respectively and couples, in order to stablize the voltage of pixel electrode 11 and pixel electrode 12.In addition, be positioned at projection 15a, the 15b of upper substrate, the central part of weave throngh from the top respectively pixel electrode 11 and pixel electrode 12.Because the shape of pixel electrode 11 and pixel electrode 12 is adopted irregular being crisscross arranged, so dot structure 20 can allow the beholder experience comparatively uniformity of luminosity.And in order to strengthen contrast, will be for area design with the pixel electrode 11 of low-voltage than for and the area of high-tension pixel electrode 12 come big, the area ratio is about 2:1 haply.
But,, and cause brightness to reduce because slit 13 and projection 15a, the 15b of dot structure 20 can influence aperture opening ratio when bright attitude.In addition, projection 15a, 15b can push over liquid crystal molecule and produce light leak when dark attitude, further have influence on the picture contrast.
Summary of the invention
In view of this, purpose of the present invention is exactly a kind of dot structure to be provided and to use its display panels and liquid crystal indicator, utilizes different pixel electrode configurations, improves the aperture opening ratio of dot structure, and then promotes brightness and contrast.
According to the present invention, a kind of dot structure is proposed, comprise first pixel electrode and second pixel electrode.Second pixel electrode is around the first pixel electrode setting, and first pixel electrode and second pixel electrode supply respectively and low-voltage and high voltage, and the area of first pixel electrode is greater than the area of second pixel electrode.
According to the present invention, a kind of display panels is proposed, comprise first substrate, second substrate and a liquid crystal layer.Second substrate has dot structure, and dot structure comprises first pixel electrode and second pixel electrode.Second pixel electrode is around the first pixel electrode setting, and first pixel electrode and second pixel electrode supply respectively and low-voltage and high voltage, and the area of first pixel electrode is greater than the area of second pixel electrode.Liquid crystal layer is between first substrate and second substrate.
According to the present invention, a kind of liquid crystal indicator is proposed, comprise display panels and module backlight.Display panels comprises first substrate, second substrate and a liquid crystal layer.Second substrate has dot structure, and dot structure comprises first pixel electrode and second pixel electrode.Second pixel electrode is around the first pixel electrode setting, and first pixel electrode and second pixel electrode supply respectively and low-voltage and high voltage, and the area of first pixel electrode is greater than the area of second pixel electrode.Liquid crystal layer is between first substrate and second substrate.The adjacent setting of module backlight with second substrate.
For foregoing of the present invention can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Fig. 1 illustrates traditional dot structure synoptic diagram;
Fig. 2 illustrates traditional serrate dot structure synoptic diagram;
Fig. 3 illustrates the synoptic diagram of liquid crystal indicator; And
Fig. 4 illustrates serrate dot structure synoptic diagram of the present invention.
Fig. 5 A and accompanying drawing 5B illustrate the contrast test result figure of the display device that adopts tradition and dot structure of the present invention respectively.
Description of reference numerals
1: data line
2: sweep trace
3,14: memory capacitance
4a, 4b, 11,12: pixel electrode
10,20,100: dot structure
13,113: slit
14a, 14b, 114a, 114b, 117a, 117b: contact hole
15a, 15b, 115a, 115b: projection
50: liquid crystal indicator
51: the first substrates
51a: first light polarizing film
52: liquid crystal layer
53: the second substrates
53a: second light polarizing film
55: display panels
56: module backlight
111: the first pixel electrodes
112: the second pixel electrodes
114: memory capacitance
115a, 115b: projection
116a: the first film transistor
116b: second thin film transistor (TFT)
Embodiment
Please refer to Fig. 3, it illustrates the synoptic diagram of liquid crystal indicator.Liquid crystal indicator 50 comprises display panels 55 and module backlight 56.Display panels comprises first substrate 51, liquid crystal layer 52 and second substrate 53, and first substrate 51 for example is a colored filter substrate in the present embodiment, and second substrate 53 for example is a thin film transistor base plate.Wherein, the first light polarizing film 51a and the second light polarizing film 53a are attached at respectively on first substrate 51 and second substrate 53, and its polarization direction is orthogonal, module 56 backlight and the 53 adjacent settings of second substrate.
Please refer to Fig. 4, it illustrates serrate dot structure synoptic diagram of the present invention.Dot structure 100 is positioned on second substrate 53 of Fig. 3, comprises first pixel electrode 111 and second pixel electrode 112.Second pixel electrode 112 is provided with around first pixel electrode 111, and first and second thin film transistor (TFT) 116a, 116b see through contact hole 117a, 117b respectively and couple second pixel electrode 112 and first pixel electrode 111.First pixel electrode 111 and second pixel electrode 112 supply respectively and low-voltage and high voltage, and the area of first pixel electrode 111 is greater than the area of second pixel electrode 112.That is to say, dot structure 100 of the present invention is at the area ratio that does not change first pixel electrode 111 and second pixel electrode 112, just keep under the condition of area ratio near 2:1 of first pixel electrode 111 and second pixel electrode 112, will be arranged at the inside that supplies with high-tension second pixel electrode 112 for first pixel electrode 111 with low-voltage.Memory capacitance 114 sees through contact hole 114a, 114b respectively and couples second pixel electrode 112 and first pixel electrode 111.
Wherein, first pixel electrode 111 and second pixel electrode 112 separate with slit 113.And be arranged at projection 115a and 115b on first substrate 51 among Fig. 3, for the past all directions that make liquid crystal molecule to topple over quantity comparatively average, the central part of weave throngh from the top respectively first pixel electrode 111 and second pixel electrode 112.Therefore, under the condition of keeping the pixel electrode area ratio, slit 113 and projection 115a, 115b shrink back toward the direction of second pixel electrode 112 of first pixel electrode, 111 both sides respectively, and the area ratio that makes slit 113 and projection 115a, 115b account for dot structure 100 dwindles and improves aperture opening ratio.Simultaneously, because the area of projection 115a, 115b dwindles, can further improve contrast and improve angular field of view.In addition, also can be to have at least one slit (not illustrating) on first substrate 51, and weave throngh from the top central part of first pixel electrode 111 and second pixel electrode 112 of slit, with the toppling direction of dispensing liquid crystal molecule.And dot structure of the present invention 100 times, this slit also can occupy littler area compared to traditional dot structure, therefore can promote the brightness and the contrast expression of display device.
Please refer to Fig. 5 A and accompanying drawing 5B, it illustrates the contrast test result figure of the display device that adopts tradition and dot structure of the present invention respectively.Suppose with contrast 10 to be the minimum threshold standard of angle of visibility scope, compare as can be seen by two figure, the part of 45 degree, 135 degree, 225 degree and 315 degree at the position angle, the display device of employing dot structure 100, contrast has significant lifting.Therefore the dot structure of the preferred embodiments of the present invention can provide wider angular field of view than traditional dot structure.
The dot structure that the above embodiment of the present invention is disclosed and use its display panels and liquid crystal indicator is designed to surround the low-voltage dot structure with the high voltage dot structure in the serrate dot structure.Under the condition of the area ratio that does not change dot structure, can keep original low colour cast character.And, therefore more can improve aperture opening ratio and increase brightness because the shared area of slit and projection is less.And the reduction of projection area also helps to improve contrast and promotes angular field of view.
In sum, though the present invention discloses as above with a preferred embodiment, so it is not in order to limit the present invention.The persons of ordinary skill in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (10)
1. the display panels of a vertical multiple domain orientation comprises:
First substrate;
Second substrate, has dot structure, this dot structure comprises first pixel electrode and second pixel electrode, this second pixel electrode is around this first pixel electrode setting, this first pixel electrode and this second pixel electrode supply respectively and low-voltage and high voltage, and the area of this first pixel electrode is greater than the area of this second pixel electrode; And
One liquid crystal layer is between this first substrate and this second substrate.
2. display panels as claimed in claim 1, wherein this first pixel electrode and this second pixel electrode separate with slit.
3. display panels as claimed in claim 1 also comprises first and second thin film transistor (TFT), couples this first pixel electrode and this second pixel electrode respectively.
4. display panels as claimed in claim 1 also comprises memory capacitance, couples this first pixel electrode and this second pixel electrode respectively.
5. display panels as claimed in claim 1, wherein this first substrate has at least one projection, and this projection is by this first pixel electrode and this second pixel electrode top.
6. display panels as claimed in claim 5, wherein this projection is by the central part of this first pixel electrode and this second pixel electrode.
7. display panels as claimed in claim 1, wherein this first substrate has electrode, and this electrode has at least one slit, and this slit is by this first pixel electrode and this second pixel electrode top.
8. display panels as claimed in claim 7, wherein this slit is by the central part of this first pixel electrode and this second pixel electrode.
9. the liquid crystal indicator of a vertical multiple domain orientation comprises:
One display panels comprises:
First substrate;
Second substrate, has dot structure, this dot structure comprises first pixel electrode and second pixel electrode, this second pixel electrode is around this first pixel electrode setting, this first pixel electrode and this second pixel electrode supply respectively and low-voltage and high voltage, and the area of this first pixel electrode is greater than the area of this second pixel electrode; And
Liquid crystal layer is between this first substrate and this second substrate; And
Module backlight is with the adjacent setting of this second substrate.
10. liquid crystal indicator as claimed in claim 9 also comprises first and second light polarizing film, is attached at respectively on this first substrate and this second substrate, and the polarization direction of this first light polarizing film and this second light polarizing film is vertical.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100854882A CN101261408B (en) | 2007-03-07 | 2007-03-07 | Pixel structure and liquid crystal display panel applying same and LCD device |
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| CN2007100854882A CN101261408B (en) | 2007-03-07 | 2007-03-07 | Pixel structure and liquid crystal display panel applying same and LCD device |
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| CN101261408A CN101261408A (en) | 2008-09-10 |
| CN101261408B true CN101261408B (en) | 2011-05-25 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI514058B (en) * | 2011-11-11 | 2015-12-21 | Au Optronics Corp | Pixel array |
| TWI512377B (en) * | 2013-06-04 | 2015-12-11 | Au Optronics Corp | Pixel structure |
| KR102596770B1 (en) * | 2016-12-05 | 2023-11-01 | 삼성디스플레이 주식회사 | Liquid crystal display device |
| CN106791513B (en) * | 2016-12-23 | 2019-09-13 | 上海集成电路研发中心有限公司 | The picture element signal acquisition method of imaging sensor and imaging sensor |
| CN110580116B (en) * | 2018-06-08 | 2023-12-29 | 鸿富锦精密工业（深圳）有限公司 | Display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614493A (en) * | 2004-11-26 | 2005-05-11 | 友达光电股份有限公司 | Image element structure and its production |
| CN1908791A (en) * | 2006-08-09 | 2007-02-07 | 友达光电股份有限公司 | Liquid crystal displaying device structure |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1614493A (en) * | 2004-11-26 | 2005-05-11 | 友达光电股份有限公司 | Image element structure and its production |
| CN1908791A (en) * | 2006-08-09 | 2007-02-07 | 友达光电股份有限公司 | Liquid crystal displaying device structure |
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| CN101261408A (en) | 2008-09-10 |
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