EP0557110A2
Expired / Lapsed
EP
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A reflective substrate, a method for producing the same, and a liquid crystal display device using the same
Assignee: Sharp Corp
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Filing: 1993-02-19
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Granted: —
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Expires: 2013-02-19
Abstract
Abstract A reflective substrate (20) is provided, in which an electrode (19) made of a material having an optical reflecting function is provided above an insulating base substrate (11) and an upper surface of the electrode (19) has a continuous wave shape without any flat portions. A method for manufacturing the reflective substrate includes the steps of: forming a plurality of convex portions (14a, 14b) with two or more different heights in a region where the electrode (19) is provided; forming a polymer resin film (15), which has an upper surface in a continuous wave shape without any flat portions, on the substrate (11) with the convex portions (14a, 14b); and forming the electrode (19) made of a material having an optical reflecting function on the polymer resin film (15) so that the electrode (19) has a continuous wave shape. A liquid crystal display device using the reflective substrate (20) is provided, which includes: a reflective substrate (20) in which an electrode (19) made of a material having an optical reflecting function is provided on an insulating base substrate (11), and an upper surface of the electrode (19) has a continuous wave shape; a second substrate (30) provided opposing the reflective substrate (20); and a liquid crystal layer (35) sealed between the reflective substrate (20) and the second substrate (30).
Inventors
- 👤 Seiichi Mitsui
- 👤 Hisakazu Nakamura
- 👤 Yasunori Shimada
- 👤 Koji Taniguchi
- 👤 Hirohisa Tanaka
- 👤 Naofumi Kimura
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 04:58
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553; G02F1/136; G02F1/1362; G02F1/136227; G02F2201/00; G02F2201/12; G02F2201/121; G02F2201/123; G02F2203/00; G02F2203/02; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
39 words
A reflective substrate in which an electrode made of a material having an optical reflecting function is provided above an insulating base substrate and an upper surface of the electrode has a continuous wave shape without any flat portions.
Claim 2
Dependent Claim
25 words
A reflective substrate according to claim 1, wherein the electrode is a pixel electrode which is formed in a matrix on the insulating base substrate.
Claim 3
Dependent Claim
36 words
A reflective substrate according to claim 1, wherein a polymer resin film is provided on the side of the insulating base substrate of the electrode, and the polymer resin film is made of a photosensitive resin.
Claim 4
Dependent Claim
36 words
A reflective substrate according to claim 2, wherein a polymer resin film is provided on the side of the insulating base substrate of the electrode, and the polymer resin film is made of a photosensitive resin.
Claim 5
Dependent Claim
24 words
A reflective substrate according to claim 2, wherein a switching element is provided, and the switching element is covered with the polymer resin film.
Claim 6
Independent Claim
120 words
A method for manufacturing a reflective substrate in which an electrode made of a material having an optical reflecting function is provided above an insulating base substrate and an upper surface of the electrode has a continuous wave shape without any flat portions, comprising the steps of: forming a plurality of convex portions with two or more different heights in a region where the electrode is provided; forming a polymer resin film, which has an upper surface in a continuous wave shape without any flat portions, on the substrate with the convex portions; and forming the electrode made of a material having an optical reflecting function on the polymer resin film so that the electrode has a continuous wave shape.
Claim 7
Dependent Claim
22 words
A method for manufacturing a reflective substrate according to claim 6, wherein the convex portions are optically formed by using a photomask.
Claim 8
Dependent Claim
51 words
A reflective substrate according to claim 1, wherein a first film having convex and concave portions and a second film obtained by coating a liquid material onto the convex portions and between adjacent convex portions, followed by hardening are formed on the side of the insulating base substrate of the electrode.
Claim 9
Dependent Claim
17 words
A reflective substrate according to claim 8, wherein the first film is made of a photosensitive resin.
Claim 10
Dependent Claim
23 words
A reflective substrate according to claim 8, wherein a switching element is provided, and the switching element is covered with the first film.
Claim 11
Dependent Claim
23 words
A reflective substrate according to claim 8, wherein the switching element is provided, and the switching element is covered with the second film.
Claim 12
Dependent Claim
51 words
A reflective substrate according to claim 2, wherein a first film having convex and concave portions and a second film obtained by coating a liquid material onto the convex portions and between adjacent convex portions, followed by hardening are formed on the side of the insulating base substrate of the electrode.
Claim 13
Dependent Claim
17 words
A reflective substrate according to claim 12, wherein the first film is made of a photosensitive resin.
Claim 14
Dependent Claim
23 words
A reflective substrate according to claim 12, wherein a switching element is provided, and the switching element is covered with the first film.
Claim 15
Dependent Claim
23 words
A reflective substrate according to claim 12, wherein a switching element is provided, and the switching element is covered with the second film.
Claim 16
Independent Claim
126 words
A method for manufacturing a reflective substrate in which an electrode made of a material having an optical reflecting function is provided above an insulating base substrate and an upper surface of the electrode has a continuous wave shape without any flat portions, comprising the steps of: forming a first film having a plurality of convex portions with two or more different heights on one surface of the insulating base substrate on which the electrode is to be provided; coating a liquid material onto the insulating base substrate on which the first film is formed and hardening the resulting substrate to form a second film at least on the convex portions and concave portions between the convex portions; and forming the electrode on the second film.
Claim 17
Dependent Claim
63 words
A liquid crystal display device comprising: a reflective substrate in which an electrode made of a material having an optical reflecting function is provided on an insulating base substrate, and an upper surface of the electrode has a continuous wave shape; a second substrate provided opposing the reflective substrate; and a liquid crystal layer sealed between the reflective substrate and the second substrate.
Claim 18
Dependent Claim
25 words
A liquid crystal display device according to claim 17, wherein the electrode is a pixel electrode formed in a matrix above the insulating base substrate.
Claim 19
Dependent Claim
22 words
A liquid crystal display device according to claim 17, wherein the electrode is a counter electrode formed on the insulating base substrate.
References Cited (Backward Citations)
No citation records indexed.
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