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Liquid crystal display device

A technology of a liquid crystal display device and a liquid crystal layer, which is applied in the direction of nonlinear optics, instruments, optics, etc., can solve problems such as the decline in the display quality of liquid crystal display devices, achieve excellent viewing angle characteristics, and avoid finger pressure marks

Active Publication Date: 2015-08-19
TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This phenomenon leads to a significant decrease in the display quality of the liquid crystal display device

Method used

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  • Liquid crystal display device
  • Liquid crystal display device
  • Liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] will now refer to Figure 1 to Figure 4 An exemplary liquid crystal display device according to Embodiment 1 is described. figure 1 is a plan view showing the structure of one pixel of the liquid crystal display device according to Embodiment 1, in which a unit pixel 27 is indicated by a region surrounded by a dotted line. figure 2 is the edge of the liquid crystal display device figure 1 A cross-sectional view taken along the line II-II shown in , and also shows the liquid crystal layer and the opposite substrate. image 3 yes figure 1 A zoomed-in view of the columns and their surroundings shown in . Figure 4 yes image 3 A further enlarged view of the upper and lower parts of the pixels in .

[0062] will now be described in detail Figure 1 to Figure 4 An exemplary liquid crystal display device according to Example 1 shown in . The liquid crystal display device comprises a first transparent insulating substrate 11, a second transparent insulating substrat...

Embodiment 2

[0085] will now use Figure 5 , Figure 6 and Figure 7 Example 2 is described. Figure 5 is a plan view showing the structure of one pixel of the liquid crystal display device according to Embodiment 2, in which a unit pixel 27 is indicated by a region surrounded by a dotted line. Figure 6 is along Figure 5 A cross-sectional view taken along the line VI-VI shown in , and further shows the liquid crystal layer and the opposite substrate. Figure 7 is showing Figure 6 A zoomed-in view of a column and its surroundings within a pixel in . will now be described in detail Figure 5 , Figure 6 and Figure 7 Example 2 shown in .

[0086] In Example 1, as for example figure 1 As shown, the pixel electrode is formed of a transparent conductive film. Meanwhile, in embodiment 2, such as Figure 5 , Figure 6 and Figure 7 As shown, the pixel electrode is formed by the second metal layer. That is, during the process of forming the second metal layer, the data line 5 , ...

Embodiment 3

[0088] will now use Figure 8 , Figure 9 and Figure 10 Example 3 is described. Figure 8 is a plan view showing the structure of one pixel of the liquid crystal display device according to Embodiment 3, in which a unit pixel 27 is indicated by a region surrounded by a dotted line. Figure 9 is showing Figure 8 An enlarged view of the area around data line 5 in . Figure 10 is a plan view showing a modified structure of one pixel when the portion of the common electrode covering the data line is not hollowed out, where the unit pixel 27 is indicated by a region surrounded by a dotted line. will now be described in detail Figure 8 , Figure 9 and Figure 10 Example 3 shown in .

[0089] In Embodiment 1, in each pixel, the strip-shaped pixel electrodes 2 are arranged such that the extending direction thereof is parallel to the extending direction of the data lines 5 . Meanwhile, in embodiment 3, such as Figure 8 As shown, in each pixel, the strip-shaped pixel elect...

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Abstract

A lateral-electric-field mode liquid crystal display device includes: substrates; a liquid crystal layer; plural scanning lines and plural data lines crossing on one of the substrates; plural pixels formed by the scanning lines and the data lines; at least one strip-shaped pixel electrode arranged in each pixel and extending along the data line or the scanning line; a common electrode located in a layer closer to the liquid crystal layer than the strip-shaped pixel electrodes so as to cover the scanning lines and the data lines; and a first rectangular pixel electrode connected with one end of each of the at least one strip-shaped pixel electrode to from a T shape. The first rectangular pixel electrode overlaps with corner parts of an opening section of the common electrode, where the corners are closer to the first rectangular pixel electrode than the other corners of the opening section.

Description

technical field [0001] The present invention relates to a liquid crystal display device. In particular, the present invention relates to a transverse electric field type active matrix liquid crystal display device having a large opening and capable of realizing high resolution. Background technique [0002] In recent years, lateral electric field type liquid crystal display devices represented by in-plane switching (In-plane Switching, IPS) liquid crystal display devices have been provided on the market. Such liquid crystal display devices have excellent viewing angles and are widely used in numerous information terminals ranging from relatively large-sized devices such as televisions and monitors to portable devices such as tablets and smartphones. The IPS liquid crystal display device includes two kinds of strip-like (rectangular) electrodes (strip-like pixel electrodes and strip-like parts of the common electrode) arranged in parallel at intervals when viewed from a posi...

Claims

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Application Information

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IPC IPC(8): G02F1/1343G02F1/1362G02F1/1337
CPCG02F1/134363G02F1/134336G02F1/13439G02F1/1337G02F1/134309G02F1/137G02F1/134318G02F1/13706G02F1/13712G02F1/133707
Inventor 伊藤英毅西田真一渡边贵彦
Owner TIANMA MICRO ELECTRONICS CO LTD
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