Substrate for liquid crystal display and liquid crystal display utilizing the same
First Claim
1. A substrate for a liquid crystal display, comprising:
- a switching element formed in a pixel region;
a resin color filter layer formed in the pixel region;
a pixel electrode formed on the resin color filter layer; and
a contact hole formed through the resin color filter layer to electrically connect the switching element and the pixel electrode, and the contour of the bottom of the contact hole having different length in longitudinal and transverse directions thereof and having round corners.
4 Assignments
0 Petitions
Accused Products
Abstract
The generation of residues or flakes of a color filter is suppressed to eliminate conduction failures on an LCD substrate having a color filter on an array substrate. A passivation film formed between a pixel electrode formed in each of a plurality of pixel regions and a TFT for driving the pixel electrode has a multi-layer structure constituted by SiN layers and a SiO layers, and the SiO layer is located at the top of the film. A resin CF layer is formed on the passivation film having such a multi-layer structure. Since the resin CF layer is formed directly on the SiO layer, reduction of the adhesion of the same is suppressed. As a result, the color filter is unlikely to come off when the resin CF layer is formed, and residues of the color filter is unlikely to be generated when a contact hole is formed in the resin CF layer. This suppresses conduction failures and makes it possible to provide a reliable TFT substrate and LCD having high display characteristics.
46 Citations
7 Claims
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1. A substrate for a liquid crystal display, comprising:
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a switching element formed in a pixel region; a resin color filter layer formed in the pixel region; a pixel electrode formed on the resin color filter layer; and a contact hole formed through the resin color filter layer to electrically connect the switching element and the pixel electrode, and the contour of the bottom of the contact hole having different length in longitudinal and transverse directions thereof and having round corners. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification