Substrate for liquid crystal display and liquid crystal display utilizing the same
First Claim
1. A substrate for a liquid crystal display comprising:
- a passivation film formed between a pixel electrode formed in each of a plurality of pixel regions and a switching element for driving the pixel electrode; and
a color filter layer formed on the passivation film;
wherein the passivation film has a multi-layer structure constituted by a silicon nitride layer and a silicon oxide layer or a silicon oxynitride layer and wherein the silicon oxide layer or the silicon oxynitride layer is formed in contact with the color filter layer.
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.
40 Citations
16 Claims
-
1. A substrate for a liquid crystal display comprising:
-
a passivation film formed between a pixel electrode formed in each of a plurality of pixel regions and a switching element for driving the pixel electrode; and
a color filter layer formed on the passivation film;
wherein the passivation film has a multi-layer structure constituted by a silicon nitride layer and a silicon oxide layer or a silicon oxynitride layer and wherein the silicon oxide layer or the silicon oxynitride layer is formed in contact with the color filter layer. - View Dependent Claims (2, 3, 4)
-
-
5. A liquid crystal display comprising:
-
a base substrate having a passivation film formed between a pixel electrode formed in each of a plurality of pixel regions and a switching element for driving the pixel electrode and a color filter layer formed on the passivation film;
an opposite substrate provided opposite to the base substrate for a liquid crystal display; and
a liquid crystal layer sandwiched between the base substrate and the opposite substrate;
wherein the passivation film of the base substrate has a multi-layer structure constituted by a silicon nitride layer and a silicon oxide layer or a silicon oxynitride layer and wherein the silicon oxide layer or the silicon oxynitride layer is formed in contact with the color filter layer.
-
-
6. A substrate for a liquid crystal display, comprising:
-
an insulated substrate provided opposite to an opposite substrate with a liquid crystal layer sandwiched therebetween;
a display area provided on the insulated substrate and including a plurality of pixel regions in which a switching element, a silicon nitride layer and a silicon oxide layer or a silicon oxynitride layer, a resin color filter layer and a pixel electrode are formed in the order listed; and
an overcoat layer made of an insulating resin material formed between the resin color filter layer and the pixel electrode in the display area, wherein a relationship expressed by “
the resin color filter layer>
the overcoat layer≧
the silicon oxide layer or the silicon oxynitride layer≧
the silicon nitride layer”
is satisfied in terms of the sizes of opening sectional areas of openings of a contact hole in the respective layers located above the switching element.
-
-
7. 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. - View Dependent Claims (8, 9, 13, 14, 15, 16)
-
-
10. 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 groove formed through the resin color filter layer with a bottom contour for electrically connecting the switching element and the pixel electrode. - View Dependent Claims (11, 12)
-
Specification