US5121237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display device and method of manufacture
Assignee: AUO Corp
•
Filing: 1989-12-21
•
Granted: 1992-06-09
•
Expires: 2009-12-21
Abstract
Abstract The present invention relates to a light shield for use in liquid crystal displays. According to the present invention, the light shielding layer includes an acrylic resin with a cross-linked structure in which carbon black particles are dispersed. Further, the light shield may be adapted to cover a switching element which controls the voltage applied to the liquid crystals. In addition, the present invention is directed to a method of manufacturing a light shield which includes an acrylic resin with cross-linked structure in which carbon black particles are dispersed.
Inventors
- 👤 Ayumi Ikeda
- 👤 Toshihiko Koseki
- 👤 Toshihiro Ueki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:43
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/136209; C; C09; C09K; C09K2323/00
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
72 words
In a liquid crystal display device having a plurality of transparent picture element electrodes formed on a transparent substrate and light shielding layers formed between said picture element electrodes, the improvement comprising: said light shielding layers including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed to render said resin substantially light blocking, said acrylic resin comprising an oligoester diacrylate prepared for maleic anhydride and polyethylene glycol.
Claim 2
Dependent Claim
72 words
In a liquid crystal display device having a plurality of transparent picture element electrodes formed on a transparent substrate and light shielding layers formed between said picture element electrodes, the improvement comprising: said light shielding layers including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed to render said resin substantially light blocking, said acrylic resin comprising an oligoester diacrylate prepared for maleic anhydride and polyethylene glycol.
Claim 3
Dependent Claim
92 words
In a liquid crystal display device having a plurality of transparent picture element electrodes formed on a transparent substrate and light shielding layers formed between said picture element electrodes, the improvement comprising: said light shielding layers including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed to render said resin substatially light blocking, said acrylic resin being an acrylic ester of polyhydric alcohols selected from the group consisting of: ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, polyethylene glycol diacrylate, and 1, 4 butane diol diacrylate.
Claim 4
Dependent Claim
92 words
In a liquid crystal display device having a plurality of transparent picture element electrodes formed on a transparent substrate and light shielding layers formed between said picture element electrodes, the improvement comprising: said light shielding layers including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed to render said resin substatially light blocking, said acrylic resin being an acrylic ester of polyhydric alcohols selected from the group consisting of: ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, polyethylene glycol diacrylate, and 1, 4 butane diol diacrylate.
Claim 5
Dependent Claim
86 words
In a liquid crystal display device having a plurality of transparent picture element electrodes formed on a transparent substrate and light shielding layers formed between said picture element electrodes, the improvement comprising: said light shielding layers including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed to render said resin substantially light blocking, said acrylic resin being a polyester polyacrylate selected from the group consisting of: diacrylate of phthalic anhydride and diethylene glycol, and oligoesterdiacrylate of phthalic anhydride and polyethylene glycol.
Claim 6
Dependent Claim
86 words
In a liquid crystal display device having a plurality of transparent picture element electrodes formed on a transparent substrate and light shielding layers formed between said picture element electrodes, the improvement comprising: said light shielding layers including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed to render said resin substantially light blocking, said acrylic resin being a polyester polyacrylate selected from the group consisting of: diacrylate of phthalic anhydride and diethylene glycol, and oligoesterdiacrylate of phthalic anhydride and polyethylene glycol.
Claim 7
Dependent Claim
68 words
In a liquid crystal display device having a plurality of transparent picture element electrodes formed on a transparent substrate and light shielding layers formed between said picture element electrodes, the improvement comprising: said light shielding layers including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed to render said resin substantially light blocking, said acrylic resin being a urethane acrylate comprising: di(methacryloxyethyl)-4-methyl-m-phenylene diurethane.
Claim 8
Dependent Claim
68 words
In a liquid crystal display device having a plurality of transparent picture element electrodes formed on a transparent substrate and light shielding layers formed between said picture element electrodes, the improvement comprising: said light shielding layers including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed to render said resin substantially light blocking, said acrylic resin being a urethane acrylate comprising: di(methacryloxyethyl)-4-methyl-m-phenylene diurethane.
Claim 9
Dependent Claim
78 words
In a liquid crystal display device having liquid crystals filled between two transparent substrates facing each other, a switching element for controlling voltage supplied to said liquid crystals provided on one of sai dtwo substrates, and a light shielding layer formed on said switching element, said light shielding layer including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed, said acrylic resin comprising an oligoester diacrylate prepared from maleic anhydride and polyethylene glycol.
Claim 10
Dependent Claim
78 words
In a liquid crystal display device having liquid crystals filled between two transparent substrates facing each other, a switching element for controlling voltage supplied to said liquid crystals provided on one of sai dtwo substrates, and a light shielding layer formed on said switching element, said light shielding layer including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed, said acrylic resin comprising an oligoester diacrylate prepared from maleic anhydride and polyethylene glycol.
Claim 11
Dependent Claim
95 words
In a liquid crystal display device having liquid crystals filled between two transparent substrates facing each other, a switching element for controlling voltage supplied to said liquid crystals provided on one of said two substrates, and a light shielding layer formed on said switching element, said light shielding layer including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed, said acrylic resin being an acrylic ester of polyhydric alcohols selected from the group consisting of: ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, and 1, 4 butane diol diacrylate.
Claim 12
Dependent Claim
95 words
In a liquid crystal display device having liquid crystals filled between two transparent substrates facing each other, a switching element for controlling voltage supplied to said liquid crystals provided on one of said two substrates, and a light shielding layer formed on said switching element, said light shielding layer including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed, said acrylic resin being an acrylic ester of polyhydric alcohols selected from the group consisting of: ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, and 1, 4 butane diol diacrylate.
Claim 13
Dependent Claim
92 words
In a liquid crystal display device having liquid crystals filled between two transparent substrates facing each other, a switching element for controlling voltage supplied to said liquid crystals provided on one of said two substrates, and a light shielding layer formed on said switching element, said light shielding layer including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed, said acrylic resin being a polyester polyacrylate selected from the group consisting of: diacrylate of phthalic anhydride and diethylene glycol, and oligoesterdiacrylate of phthalic anhydride and polyethylene glycol.
Claim 14
Dependent Claim
92 words
In a liquid crystal display device having liquid crystals filled between two transparent substrates facing each other, a switching element for controlling voltage supplied to said liquid crystals provided on one of said two substrates, and a light shielding layer formed on said switching element, said light shielding layer including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed, said acrylic resin being a polyester polyacrylate selected from the group consisting of: diacrylate of phthalic anhydride and diethylene glycol, and oligoesterdiacrylate of phthalic anhydride and polyethylene glycol.
Claim 15
Dependent Claim
74 words
In a liquid crystal display device having liquid crystals filled between two transparent substrates facing each other, a switching element for controlling voltage supplied to said liquid crystals provided on one of said two substrates, and a light shielding layer formed on said switching element, said light shielding layer including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed, said acrylic resin being a urethane acrylate comprising: di(methacryloxyethyl)-4-methyl-m-phenylene diurethane.
Claim 16
Dependent Claim
74 words
In a liquid crystal display device having liquid crystals filled between two transparent substrates facing each other, a switching element for controlling voltage supplied to said liquid crystals provided on one of said two substrates, and a light shielding layer formed on said switching element, said light shielding layer including an acrylic resin having a cross-linked structure in which carbon black particles are dispersed, said acrylic resin being a urethane acrylate comprising: di(methacryloxyethyl)-4-methyl-m-phenylene diurethane.
Claim 17
Dependent Claim
40 words
A light shield comprising: an acrylic resin having a cross-linked structure; and carbon black particles dispersed in said resin to render said resin substantially light blocking, said acrylic resin comprising an oligoester diacrylate prepared from maleic anhydride and polyethylene glycol.
Claim 18
Dependent Claim
40 words
A light shield comprising: an acrylic resin having a cross-linked structure; and carbon black particles dispersed in said resin to render said resin substantially light blocking, said acrylic resin comprising an oligoester diacrylate prepared from maleic anhydride and polyethylene glycol.
Claim 19
Dependent Claim
59 words
A light shield comprising: an acrylic resin having a cross-linked structure; and carbon black particles dispersed in said resin to render said resin substantially light blocking, said acrylic resin being an acrylic ester of polyhydric alcohols selected from the group consisting of: ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, polyethylene glycol diacrylate, and 1, 4-butane diol diacrylate.
Claim 20
Dependent Claim
59 words
A light shield comprising: an acrylic resin having a cross-linked structure; and carbon black particles dispersed in said resin to render said resin substantially light blocking, said acrylic resin being an acrylic ester of polyhydric alcohols selected from the group consisting of: ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, polyethylene glycol diacrylate, and 1, 4-butane diol diacrylate.
Claim 21
Dependent Claim
54 words
A light shield comprising: an acrylic resin having a cross-linked structure; and carbon black particles disposed in said resin to render said resin substantially light blocking, said acrylic resin being a polyester polyacrylate selected from the group consisting of diacrylate of phthalic anhydride and diethylene glycol, and oligoesterdiacrylate of phthalic anhydride and polyethylene glycol.
Claim 22
Dependent Claim
54 words
A light shield comprising: an acrylic resin having a cross-linked structure; and carbon black particles disposed in said resin to render said resin substantially light blocking, said acrylic resin being a polyester polyacrylate selected from the group consisting of diacrylate of phthalic anhydride and diethylene glycol, and oligoesterdiacrylate of phthalic anhydride and polyethylene glycol.
Claim 23
Dependent Claim
36 words
A light shield comprising: an acrylic resin having a cross-linked structure; and carbon black particles disposed in said resin to render said resin substantially light blocking, said acrylic resin being a urethane acrylate comprising: di(methacryloxyethyl)-4-methyl-m-phenylene diurethane.
Claim 24
Dependent Claim
36 words
A light shield comprising: an acrylic resin having a cross-linked structure; and carbon black particles disposed in said resin to render said resin substantially light blocking, said acrylic resin being a urethane acrylate comprising: di(methacryloxyethyl)-4-methyl-m-phenylene diurethane.
Claim 25
Independent Claim
149 words
A method of manufacturing a liquid crystal display device, said method comprising the steps of: forming a transparent conducting layer on a transparent substrate; applying a positive photoresist to said conducting layer; exposing said positive photoresist through a mask which prevents light from being transmitted to a picture element electrode region of said conducting layer; removing a part of said conducting layer corresponding to a region of said positive photoresist having been exposed to light, and removing positive photoresist; applying a negative photoresist containing an acrylic resin, a photopolymerization initiator, and carbon black to the region from which the conducting layer has been removed, and to a remainder of said conducting layer; exposing said negative photoresist through a mask which prevents light from being transmitted to the picture element electrode region of said conducting layer; and removing that portion of said negative photoresist that was not exposed to light.
Claim 26
Independent Claim
149 words
A method of manufacturing a liquid crystal display device, said method comprising the steps of: forming a transparent conducting layer on a transparent substrate; applying a positive photoresist to said conducting layer; exposing said positive photoresist through a mask which prevents light from being transmitted to a picture element electrode region of said conducting layer; removing a part of said conducting layer corresponding to a region of said positive photoresist having been exposed to light, and removing positive photoresist; applying a negative photoresist containing an acrylic resin, a photopolymerization initiator, and carbon black to the region from which the conducting layer has been removed, and to a remainder of said conducting layer; exposing said negative photoresist through a mask which prevents light from being transmitted to the picture element electrode region of said conducting layer; and removing that portion of said negative photoresist that was not exposed to light.
Claim 27
Dependent Claim
30 words
A method according to claim 13, wherein said negative photoresist is substantially opaque, said acrylic resin has a crosslinked structure and said carbon black renders said resin substanitally light blocking.
Claim 28
Independent Claim
148 words
A method of manufacturing a light shield on the surface of a substrate including a conducting layer which substantially covers said substrate, said method comprising the steps of: depositing a positive photoresist layer over said conducting layer; exposing said positive photoresist layer through a mask wherein said mask includes substantially opaaque regions arranged to define picture element electrode regions in said conducting layer, said mask further including substantially transparent regions; removing said positive photoresist layer overlaying said conducting layer outside said picture element electrode regions; removing a portion of said conducting layer outside said picture element electrode regions; removing said positive photoresist over said picture element electrode regions; depositing a substantially opaque negative photoresist layers over said picture element electrodes; exposing said negative photoresist layer through said mask such so that a portion of said negative photoresist is not exposed; removing said unexposed portion of said negative photoresist.
Claim 29
Independent Claim
148 words
A method of manufacturing a light shield on the surface of a substrate including a conducting layer which substantially covers said substrate, said method comprising the steps of: depositing a positive photoresist layer over said conducting layer; exposing said positive photoresist layer through a mask wherein said mask includes substantially opaaque regions arranged to define picture element electrode regions in said conducting layer, said mask further including substantially transparent regions; removing said positive photoresist layer overlaying said conducting layer outside said picture element electrode regions; removing a portion of said conducting layer outside said picture element electrode regions; removing said positive photoresist over said picture element electrode regions; depositing a substantially opaque negative photoresist layers over said picture element electrodes; exposing said negative photoresist layer through said mask such so that a portion of said negative photoresist is not exposed; removing said unexposed portion of said negative photoresist.
Claim 30
Dependent Claim
35 words
A method according to claim 15, wherein said substantially opaque negative photoresist comprises an acrylic resin having a cross-linked structure; and carbon black particles disposed in said resin to render said resin substantially light blocking.
Claim 31
Dependent Claim
22 words
A method according to claim 15, wherein a single mask is used to expose both said negative photoresist and said positive photoresist.
References Cited (Backward Citations)
JPS56107287A
Cited
JPS58159520A
Cited
US4591240A
Cited
US4636038A
Cited
US4904056A
Cited
JPS62145218A
Cited
JPS62227120A
Cited
US4812387A
Cited
JPS62253123A
Cited
EP0271313A2
Cited
US4948706A
Cited
JPH02153902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-09 | 1995-12-09 | 1996-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-09 | 1999-12-09 | 2000-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-09 | 2003-12-09 | 2004-06-09 | $7700.00 | Window Closed / Lapsed |