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MVA (Multi-domain Vertical Alignment) liquid crystal display device

A technology of liquid crystal display device and liquid crystal layer, which is applied to instruments, nonlinear optics, optics, etc., can solve the problems of image sticking, uneven pressing display, etc., so as to improve the pixel aperture ratio, eliminate display unevenness, and eliminate metastable Domain effect

Active Publication Date: 2015-03-04
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When pressing, the dislocation of domain distribution will be formed, which will eventually cause push mura and image sticking.

Method used

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  • MVA (Multi-domain Vertical Alignment) liquid crystal display device
  • MVA (Multi-domain Vertical Alignment) liquid crystal display device
  • MVA (Multi-domain Vertical Alignment) liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] refer to figure 2 and 3 , in Embodiment 1, the MVA pixel structure of the present invention is arranged on a lower substrate (not shown in the figure), and an upper substrate 210 is arranged on the lower substrate; a liquid crystal is sandwiched between the lower substrate and the upper substrate 210 Layer 213. A side of the upper substrate 210 facing the liquid crystal layer 213 is provided with a color filter (not shown in the figure) and a protrusion 202 disposed on the color filter.

[0035] The pixel electrode of each MVA pixel includes three transparent conductive blocks 201 (ITO can be used), and one protrusion 202 is provided corresponding to each transparent conductive block 201 on the side of the color filter. In this way, the molecules of the liquid crystal layer 213 between each transparent conductive block 201 and its corresponding protrusion 202 exhibit different tendencies, forming domains.

[0036] An insulating layer 212 is disposed between the tran...

Embodiment 2

[0040] like Figure 5 As shown, the pixel area of ​​each MVA pixel is defined by a scan line 206 and a data line 207; each MVA pixel has a thin film transistor (TFT) as a pixel switch. The thin film transistor (TFT) is disposed on the lower substrate 211, including a gate on the lower substrate, a gate insulating layer 208 on the gate, a polysilicon layer on the gate insulating layer 208, and a source on the polysilicon layer. The drain electrode and the passivation layer 209 on the source and drain electrodes. The gate of the thin film transistor (TFT) is connected to the scan line 206 , its drain / source is connected to the data line 207 , and its source / drain is electrically connected to the transparent conductive block 201 . Generally, the gate of the thin film transistor (TFT) is made of the same material as the scan line 206 and is in the same layer; the source and drain of the thin film transistor (TFT) are made of the same material as the data line 207 and are in the s...

Embodiment 3

[0044] like Figure 8 As shown, the pixel area of ​​each MVA pixel is defined by a scan line 206 and a data line 207; each MVA pixel has a thin film transistor (TFT) as a pixel switch. The thin film transistor (TFT) is disposed on the lower substrate 211, including a gate on the lower substrate, a gate insulating layer 208 on the gate, a polysilicon layer on the gate insulating layer 208, and a source on the polysilicon layer. The drain electrode and the passivation layer 209 on the source and drain electrodes. The gate of the thin film transistor (TFT) is connected to the scan line 206 , its drain / source is connected to the data line 207 , and its source / drain is electrically connected to the transparent conductive block 201 . Generally, the gate of the thin film transistor (TFT) is made of the same material as the scan line 206 and is in the same layer; the source and drain of the thin film transistor (TFT) are made of the same material as the data line 207 and are in the s...

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PUM

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Abstract

The invention provides an MVA (Multi-domain Vertical) image structure and a liquid crystal display device comprising the MVA pixel structure. The MVA pixel structure is arranged on a substrate and comprises at least two transparent conducting blocks, wherein an insulating layer is arranged between the transparent conducting blocks and the substrate and is provided with a first through hole; and the transparent conducting blocks are electrically connected through the first through hole by using a conducting material. The potential is conducted to each transparent conducting (ITO) block between domains of the MVA pixel structure through the through hole by using the conducting material, so that metastable state domains are eliminated, further non-uniform display caused by pressing and an electric field is eliminated, and finally domain stabilization is realized. In addition, the conducting material forms a storage capacitor, so that the pixel aperture ratio can be improved.

Description

field of invention [0001] The invention relates to an MVA liquid crystal display device. Background technique [0002] Liquid crystal display devices (LCDs) have been widely used in various terminal display devices of large, medium and small sizes due to their light weight, small volume, and thin thickness. At present, the performance requirements of the market for liquid crystal display devices are developing toward characteristics such as high contrast, high brightness, low color shift, fast response, and wide viewing angle. At present, there are three main ways to meet the requirements of wide viewing angle: twisted nematic liquid crystal (TN) coupled with wide viewing angle film (WVF) liquid crystal display device, in-plane switching mode (IPS) liquid crystal display device, multi-domain vertical alignment ( MVA, multi-domain vertical) liquid crystal display device. Among them, the MVA mode liquid crystal display device has become the mainstream liquid crystal display ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1333G02F1/1365G02F1/139
Inventor 马骏罗熙曦
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD