Liquid crystal display device and method for manufacturing transparent electrode

Abstract

A liquid crystal display apparatus is provided in which light leakage from a peripheral portion of a non-selected pixel can be suppressed without reducing the aperture ratio of each pixel, and the contrast can be improved. A liquid crystal display apparatus 1 includes: first and second transparent substrates 5a and 5b which are opposed to each other to be placed through a predetermined gap; a liquid crystal layer 8 which is placed between opposed surfaces of the first and second transparent substrates 5a and 5b; first strip-like transparent electrodes 3a which are formed in a stripe-like pattern on a surface of the first transparent substrate 5a that is opposed to the second transparent substrate 5b; a transparent resin film 22 which is a transparent resin covering film that is formed after a stripe-like black mask 21 is formed in a direction perpendicular to the first strip-like transparent electrodes 3a, on a surface of the second transparent substrate 5b that is opposed to the first transparent substrate 5a, the resin film having inverted trapezoidal recessed portions 22a in the film surface corresponding to gaps of the black mask 21; and second strip-like transparent electrodes 30b which are formed in the recessed potions 22a of the resin film 22, and which have an inverted trapezoidal shape.

Description

technical field [0001] The present invention relates to a liquid crystal display device having a simple matrix electrode structure and a method for manufacturing a transparent electrode. Background technique [0002] figure 2 It is a sectional view showing a vertical alignment type liquid crystal display device which is an example of a liquid crystal display device having a simple matrix electrode structure. The vertical alignment type liquid crystal display device 1 includes a liquid crystal panel 2 and displays an image using the liquid crystal panel 2 . [0003] In the liquid crystal panel 2, a first strip-shaped transparent electrode 3a made of ITO (indium tin oxide) or the like is formed on one side of a first transparent substrate 5a made of a glass plate or the like. A first alignment film 4a is formed on the strip-shaped transparent electrode 3a, and an alignment rubbing process is applied to the first alignment film 4a. A second strip-shaped transparent electrode...

AI Technical Summary

Problems solved by technology

[0013] In such trapezoidal first and second strip-shaped transparent electrodes 3a and 3b, as Image 6 Shown by the arrows of the solid lines in (b), the electric field generated by the off-state voltage applied to these first and second strip-shaped transparent electrodes 3a and 3b, the first and second strip-shaped transparent electrodes in the pixel The central parts of the electrodes 3a and 3b (pixel central parts) are neatly substantially parallel to the direction perpendicular to the first and second transparent substrates 5a and 5b, but the first and second strip-shaped transparent electrodes 3a and 3b in the pixel The end portion (the peripheral portion of the pixel) is not substantially parallel to the direction perpendicular to the first and second transparent substrates 5a and 5b, but becomes an oblique electric field, and the oblique electric field makes the alignment of the liquid crystal molecules 8a in the non-selected pixels creates a disorder, so if Image 6 As indicated by the hollow arrows in (b), light leaks around the non-selected pixels, which increases the off-state transmittance and lowers the contrast.

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