CN102629039B - Array substrate and liquid crystal display - Google Patents
Array substrate and liquid crystal display Download PDFInfo
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- CN102629039B CN102629039B CN201110425121.7A CN201110425121A CN102629039B CN 102629039 B CN102629039 B CN 102629039B CN 201110425121 A CN201110425121 A CN 201110425121A CN 102629039 B CN102629039 B CN 102629039B
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- array substrate
- pixel
- liquid crystal
- pixel electrode
- crystal display
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- 239000000758 substrate Substances 0.000 title claims abstract description 38
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 34
- 239000004020 conductor Substances 0.000 claims description 6
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 3
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 claims description 3
- 238000002834 transmittance Methods 0.000 abstract description 29
- 238000009413 insulation Methods 0.000 abstract description 2
- 230000005684 electric field Effects 0.000 description 10
- 230000007423 decrease Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
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- Liquid Crystal (AREA)
Abstract
The invention discloses an array substrate and a liquid crystal display, which relate to the field of liquid crystal display and can improve light-transmitting rate of the liquid crystal display. The array substrate comprises a public electrode, a pixel electrode layer and a first insulation layer arranged between the public electrode and the pixel electrode layer. The pixel electrode layer comprises a plurality of pixel electrodes. Gaps among the pixel electrodes are at least 10 micrometers. The liquid crystal display comprises the array substrate. The array substrate is used for improving transmittance of the liquid crystal display.
Description
Technical Field
The invention relates to the field of liquid crystal display, in particular to an array substrate and a liquid crystal display.
Background
Fringe Field Switching (FFS) is a wide viewing angle technology, and a Fringe Field generated between a common electrode and a pixel electrode is used to drive a liquid crystal, thereby achieving a high transmittance on the premise of a wide viewing angle.
As shown in fig. 1, an array substrate structure of a display adopting an FFS mode in the prior art sequentially includes, from bottom to top: a signal line 16, a common electrode 12, a first insulating layer 13, and a pixel electrode layer 14. The pixel electrode layer 14 includes a plurality of pixel electrodes 11, and a signal line 16 disposed under the common electrode 12 is separated from the common electrode 12 by a second insulating layer 15.
In the above structure, the inventors found that the prior art has at least the following problems:
as shown in fig. 1, the pitch a of the pixel electrodes in the prior art is generally 6 microns or 8 microns, when driving the liquid crystal display, as shown in fig. 2, an electrical interference phenomenon occurs between two adjacent pixel electrodes 11, the two adjacent pixel electrodes 11 respectively carry different charges, and different portions of the same pixel electrode carry the same charges, so that a horizontal electric field 17 is generated between the pixel electrode and the adjacent pixel electrode, and the horizontal electric field 17 affects the rotation of the liquid crystal molecules, so that the transmittance of the liquid crystal display is reduced, especially the transmittance at the edge of each pixel electrode is reduced. As shown by the transmittance curve 18 in fig. 2, a phenomenon in which the transmittance is decreased occurs in the region affected by the horizontal electric field 17, that is, the edge of the pixel electrode and the edge of the adjacent pixel electrode.
Disclosure of Invention
The present invention provides an array substrate and a liquid crystal display, which can improve the transmittance of the liquid crystal display.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
an array substrate, comprising: the pixel electrode layer comprises a plurality of pixel electrodes, and the pitch of the pixel electrodes is at least 10 micrometers.
The distance is less than or equal to 18 micrometers in the embodiment of the invention.
Preferably, the pitch in the embodiment of the present invention is 12 μm.
Further, the array substrate further comprises: and a signal line disposed at a lower side of the common electrode, the signal line being separated from the common electrode by a second insulating layer.
The public electrode and the pixel electrode are both made of transparent conductive materials.
The distance between the common electrode and the pixel electrode layer is 0.1-0.6 microns.
An embodiment of the present invention also provides a liquid crystal display, including: the invention relates to an array substrate.
In the array substrate and the liquid crystal display in the embodiment of the invention, the distance between the pixel electrodes is set to be at least 10 micrometers, which is larger than that in the prior art, so that the influence of a horizontal electric field generated by electric interference is reduced, the transmittance at the edge of the pixel electrode is improved, and the transmittance of the whole liquid crystal display is improved.
Drawings
FIG. 1 is a schematic structural diagram of an array substrate in the prior art;
FIG. 2 is a diagram illustrating a decrease in transmittance at an edge of a pixel electrode in the prior art;
fig. 3 is a first schematic structural diagram of an array substrate according to a first embodiment of the present invention;
FIG. 4 is a schematic top view illustrating a pixel electrode layer according to an embodiment of the invention;
FIG. 5 is a schematic diagram of transmittance when the pixel electrode spacing is 6 to 18 μm according to an embodiment of the present invention;
fig. 6 is a second schematic structural diagram of the array substrate according to the first embodiment of the invention.
Reference numerals:
11-a pixel electrode, 12-a common electrode, 13-a first insulating layer, 14-a pixel electrode layer,
15-second insulation layer, 16-signal line, 17-horizontal electric field, 18-transmittance curve.
Detailed Description
The embodiment of the invention provides an array substrate and a liquid crystal display, which can improve the transmittance of the edge of a pixel electrode, thereby improving the overall transmittance of the liquid crystal display.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described herein are merely illustrative and are not intended to limit the present invention.
Example one
An embodiment of the present invention provides an array substrate, as shown in fig. 3, the array substrate includes: the pixel electrode comprises a common electrode 12, a pixel electrode layer 14 and a first insulating layer 13 arranged between the common electrode 12 and the pixel electrode layer 14, wherein the pixel electrode layer 14 comprises a plurality of pixel electrodes 11, and the pitch of the pixel electrodes 11 is at least 10 micrometers.
The specific configuration pattern of the pixel electrode 11 in this embodiment is different, and the pixel electrode 11 shown in fig. 3 includes three portions separated by 4 micrometers, and the width of each portion is 2 micrometers. The specific pattern of the pixel electrode 11 does not affect the practical effects of the present invention.
The pitch of the pixel electrodes 11 in the present embodiment refers to the distance from one pixel electrode edge to the next adjacent pixel electrode edge, as shown in fig. 3 as pitch a.
The pitch of the pixel electrodes 11 in this embodiment refers to the longitudinal pitch or the transverse pitch of the pixel electrodes 11 shown in fig. 4, and the signal lines 16 shown in the figure include longitudinal data lines and transverse gate lines.
In the array substrate of the embodiment of the invention, the distance A of the pixel electrodes is set to be at least 10 micrometers, so that the influence of the horizontal electric field 17 is eliminated as much as possible, and high transmittance is obtained. When the pitch A is 6 to 18 μm, the transmittance is as shown in FIG. 5. The transmittance was 2.13% at a pitch a of 10 microns, which was significantly higher than 1.98% at a pitch a of 8 microns. The transmittance test environment is a grid scanning voltage of 0.8V, a pixel voltage of +8V/0.1V, and a common electrode of 4V.
The distance A between the pixel electrodes in the array substrate is set to be at least 10 micrometers, so that the influence of a horizontal electric field generated by an electrical interference phenomenon is reduced, the transmittance of the edge of each pixel electrode is improved, and the overall transmittance of the liquid crystal display is improved.
Further, the distance a in the embodiment of the present invention is less than or equal to 18 μm.
When the pitch a of the pixel electrodes is increased, the aperture ratio is decreased, and the aperture ratio is decreased, which may decrease the transmittance of the liquid crystal display, so that when designing the array substrate and the display, the specific size of the pitch a needs to comprehensively consider various influencing factors and is set according to the specification and the actual requirement of the display, and the range of the pitch a of the pixel electrodes in this embodiment is 10 micrometers or more and 18 micrometers or less.
As a preferable scheme, the pitch a of the pixel electrodes in the array substrate according to the embodiment of the present invention is 12 μm.
As can be seen from the above, the aperture ratio also affects the transmittance. As shown in fig. 5, as the distance a increases, the transmittance increases; however, the increase of the pitch a also decreases the aperture ratio, and the decrease of the aperture ratio decreases the transmittance of the liquid crystal display, so the pitch a of the pixel electrodes in this embodiment is preferably 12 μm by taking these factors into consideration.
Further, as shown in fig. 6, the array substrate of this embodiment further includes: a signal line 16 disposed on a lower side of the common electrode, the signal line 16 being separated from the common electrode 12 by a second insulating layer 15.
The signal lines 16 in this embodiment are gate lines and data lines disposed on the array substrate.
When the signal line 16 is a gate line transversely disposed on the array substrate, the pitch a of the pixel electrodes shown in fig. 6 refers to the transverse pitch of the adjacent pixel electrodes; when the signal lines 16 are data lines arranged in the longitudinal direction on the array substrate, the pitch a of the pixel electrodes shown in fig. 6 refers to the longitudinal pitch of the adjacent pixel electrodes.
The material of the common electrode 12 and the material of the pixel electrode 11 are both transparent conductive materials.
Optionally, the transparent conductive material is Indium-tin-Oxide (ITO) or Indium-Zinc-Oxide (IZO).
The distance between the common electrode and the pixel electrode layer is 0.1-0.6 microns, so that the distance between the pixel electrode and the common electrode is very short, the generated fringe electric field is strong, and the driving to liquid crystal is strongest.
In order to reduce the influence of the electrical interference phenomenon, the array substrate in the embodiment of the invention optimizes the space between the pixel electrodes, so that the transmittance of the edge of each pixel electrode is improved, and the overall transmittance of the liquid crystal display is improved.
Example two
An embodiment of the present invention also provides a liquid crystal display, including: array substrate and color filter substrate, the array substrate include: the pixel electrode layer comprises a plurality of pixel electrodes, and the pitch of the pixel electrodes is at least 10 micrometers.
In this embodiment, the pitch is less than or equal to 18 micrometers.
In the embodiment of the invention, the distance A of the liquid crystal display is set to be at least 10 micrometers, so that the influence of a horizontal electric field generated by an electric interference phenomenon is reduced, and the integral transmittance of the liquid crystal display is improved.
As a preferable mode, the pitch of the pixel electrodes in the liquid crystal display of this embodiment is 12 μm.
Further, the liquid crystal display of this embodiment further includes: and a signal line disposed at a lower side of the common electrode, the signal line being separated from the common electrode by a second insulating layer.
The common electrode and the pixel electrode are made of transparent conductive materials, such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO).
The distance between the common electrode and the pixel electrode layer is 0.1-0.6 microns, and the fringe electric field generated at the moment drives the liquid crystal most strongly.
In order to reduce the influence of the electrical interference phenomenon, the liquid crystal display in the embodiment of the invention optimizes the distance between the pixel electrodes, so that the transmittance of the edge of each pixel electrode is improved, and the overall transmittance of the liquid crystal display is improved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. An array substrate, comprising: the pixel structure comprises a common electrode, a pixel electrode layer and a first insulating layer arranged between the common electrode and the pixel electrode layer, wherein the pixel electrode layer comprises a plurality of pixel electrodes, and the pixel structure is characterized in that the distance between the pixel electrodes is more than or equal to 10 micrometers and less than or equal to 18 micrometers; wherein,
the pitch of the pixel electrodes is the distance from the edge of the pixel electrode of a certain pixel to the edge of the pixel electrode of the next pixel adjacent to the edge of the pixel electrode.
2. The array substrate of claim 1, wherein the pitch is 12 microns.
3. The array substrate of claim 1, further comprising: and a signal line disposed at a lower side of the common electrode, the signal line being separated from the common electrode by a second insulating layer.
4. The array substrate of claim 1, wherein the common electrode and the pixel electrode are made of transparent conductive materials.
5. The array substrate of claim 4,
the transparent conductive material is indium tin oxide or indium zinc oxide.
6. The array substrate of claim 1, wherein a spacing between the common electrode and the pixel electrode layer is 0.1 to 0.6 microns.
7. A liquid crystal display comprising the array substrate of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110425121.7A CN102629039B (en) | 2011-12-16 | 2011-12-16 | Array substrate and liquid crystal display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110425121.7A CN102629039B (en) | 2011-12-16 | 2011-12-16 | Array substrate and liquid crystal display |
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| Publication Number | Publication Date |
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| CN102629039A CN102629039A (en) | 2012-08-08 |
| CN102629039B true CN102629039B (en) | 2015-01-07 |
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| CN201110425121.7A Active CN102629039B (en) | 2011-12-16 | 2011-12-16 | Array substrate and liquid crystal display |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104678629B (en) * | 2013-11-26 | 2017-11-10 | 群创光电股份有限公司 | Display panel |
| CN103941453A (en) | 2014-04-09 | 2014-07-23 | 合肥京东方光电科技有限公司 | Array substrate, display panel and display device |
| CN114578621B (en) * | 2022-04-26 | 2023-12-05 | 厦门天马微电子有限公司 | Display panel and display device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002365657A (en) * | 2001-06-07 | 2002-12-18 | Seiko Epson Corp | Liquid crystal device, projection type display device, and electronic equipment |
| CN101051134A (en) * | 2006-04-06 | 2007-10-10 | 株式会社半导体能源研究所 | Liquid crystal display device, semiconductor device, and electronic appliance |
| US7298445B1 (en) * | 2003-06-23 | 2007-11-20 | Research Foundation Of The University Of Central Florida | Fast response liquid crystal mode |
| JP2008070688A (en) * | 2006-09-15 | 2008-03-27 | Epson Imaging Devices Corp | Liquid crystal device, and electronic apparatus |
| WO2010137235A1 (en) * | 2009-05-29 | 2010-12-02 | シャープ株式会社 | Liquid crystal panel, method for manufacturing same, and liquid crystal display device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04323625A (en) * | 1991-04-23 | 1992-11-12 | Sony Corp | Liquid crystal display device |
| JPH07294936A (en) * | 1994-04-25 | 1995-11-10 | Casio Comput Co Ltd | Matrix type liquid crystal display device |
| TWI403809B (en) * | 2007-01-29 | 2013-08-01 | Hydis Tech Co Ltd | Fringe field switching mode liquid crystal display and manufacturing method thereof |
| JP2008233594A (en) * | 2007-03-22 | 2008-10-02 | Seiko Epson Corp | Electro-optical device |
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- 2011-12-16 CN CN201110425121.7A patent/CN102629039B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002365657A (en) * | 2001-06-07 | 2002-12-18 | Seiko Epson Corp | Liquid crystal device, projection type display device, and electronic equipment |
| US7298445B1 (en) * | 2003-06-23 | 2007-11-20 | Research Foundation Of The University Of Central Florida | Fast response liquid crystal mode |
| CN101051134A (en) * | 2006-04-06 | 2007-10-10 | 株式会社半导体能源研究所 | Liquid crystal display device, semiconductor device, and electronic appliance |
| JP2008070688A (en) * | 2006-09-15 | 2008-03-27 | Epson Imaging Devices Corp | Liquid crystal device, and electronic apparatus |
| WO2010137235A1 (en) * | 2009-05-29 | 2010-12-02 | シャープ株式会社 | Liquid crystal panel, method for manufacturing same, and liquid crystal display device |
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