Liquid crystal display device

Inactive Publication Date: 2012-06-14
OPTREX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0022]According to the present invention, it is possible to provide a vertical alignment type liquid crystal display device suitable fo

Problems solved by technology

However, at present, the application is limited, and its use is also limited.
One of the reasons is a problem of inherent display irregularities during multiplex driving.
Such high frequency driving causes a restriction to the electrode resistance or to driving IC and has restricted the application range.
Further, the vertical alignment type liquid crystal display device usually has a problem such that the insulating property of the alignment film is high, it is easily electrostatically charged in an external electrostatic field to cause an abnormal display, and further such an abnormal display state is likely to prolong for a long time.
For example, if such a vertical alignment type liquid crystal display device is mounted on and assembled in an image display system of e

Method used

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Examples

Experimental program
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example 1

[0132]The above liquid crystal 2 was applied to the vertical alignment type liquid crystal display device capable of multiplex driving in this embodiment as described above, whereby a liquid crystal display device of Example 1 was prepared. The electrode structure of a pixel of the liquid crystal display device of Example 1 was made to be the same as the first example of the second electrode form applicable to the vertical alignment type liquid crystal display device in this embodiment, as shown in FIG. 10. In such a case, the size of one pixel was 0.39 mm square, the pitch for forming sub-pixels was 80 μm, and each linear slit width was made to be 10 μm. The panel specific resistance was 4.6×1010 Ωcm. Using the vertical alignment type liquid crystal display device of Example 1, static electricity was applied to the substrate surface for displaying the liquid crystal layer, whereby the time until electrostatic charge was resolved, was 5 seconds and thus was found to be a very short tim

example 2

[0135]The above liquid crystal 2 was applied to the vertical alignment type liquid crystal display device capable of multiplex driving in this embodiment as described above, whereby a liquid crystal display device of Example 2 was prepared. The electrode structure of a pixel in the liquid crystal display device of Example 2 was made to be the same as the first example of the first electrode form applicable to the vertical alignment type liquid crystal display device in this embodiment as shown in FIG. 6. In such a case, the size of one pixel was 0.39 mm square, the pitch for forming sub-pixels was 80 μm, and the width of a linearly extending slit portion of a bent slit was 10 μm. The panel specific resistance was 4.6×1010 Ωcm.

[0136]Using the vertical alignment type liquid crystal display device of Example 2, static electricity was applied to the substrate surface for displaying the liquid crystal layer, whereby the time until the electrostatic charge was resolved, was 4 seconds and thu

example 3

[0139]The above liquid crystal 2 was applied to the vertical alignment type liquid crystal display device capable of multiplex driving in this embodiment as described above, whereby a liquid crystal display device of Example 3 was prepared. The electrode structure of a pixel in the liquid crystal display device of Example 3 was made to be the same as the second example of the second electrode form applicable to the vertical alignment type liquid crystal display device in this embodiment as shown in FIG. 11. In such a case, the size of one pixel was 0.39 mm square, the pitch for forming sub-pixels was 80 μm, and the width of a linear slit was 10 μm. The panel specific resistance was 4.6×1010 Ωcm.

[0140]By using the vertical alignment type liquid crystal display device of Example 3, static electricity was applied to the substrate surface for displaying the liquid crystal layer, whereby the time until the electrostatic charge was resolved, was 5 seconds and thus was found to be a very shor

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Abstract

A vertical alignment type liquid crystal display, having a specific resistance within a range of from 1×1010 Ωcm to 2×1011 Ωcm, and containing a liquid crystal layer sandwiched by a substrate having a front electrode on the surface and a substrate having a back electrode, wherein the liquid crystal layer is aligned perpendicular to the electrode surface when no voltage is applied, and upon application of a voltage by multiplex driving, the liquid crystal layer in pixels undergoes an alignment change to align parallel to the substrates. By using slits as pixel dividing structures provided on the front of the electrode, one pixel is divided into a plurality of sub-pixels, such that the directions of the alignment change upon application of a voltage are different between adjacent sub-pixels interposing the slits, and the sub-pixels are formed within a range of from 50 μm to 100 μm.

Description

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Claims

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Application Information

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Owner OPTREX CORP
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