US5784134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display device and a method of fabricating the device using transparent-electrodes as a photomask
Assignee: Sharp Corp
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Filing: 1995-02-15
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Granted: 1998-07-21
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Expires: 2015-02-15
Abstract
Abstract Disclosed is a liquid crystal display device which includes a pair of substrates interposing a display medium including a polymer and liquid crystal therebetween and transparent-electrode portions formed on at least one of the pair of substrates, the transparent-electrode portions not easily transmitting light within a certain wavelength range.
Inventors
- 👤 Koichi Fujimori
- 👤 Tokihiko Shinomiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:49
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1333; G02F1/133377; G02F1/1343; G02F1/13439
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
125 words
A method for fabricating a liquid crystal display device comprising the steps of: forming strip-shaped transparent-electrodes on two substrates at least one of which is transparent so that the light transmittance of the transparent-electrodes is less than that of the at least one transparent substrate; attaching the two substrates to face each other such that the transparent-electrodes on the two substrates intersect each other; injecting a mixture of at least liquid crystal material and photocurable resin into a space between the attached two substrates; and irradiating the mixture with light from at least one side of the attached two substrates using the strip-shaped transparent-electrodes as a photomask so as to form a liquid crystal region surrounded by polymer walls corresponding to the strip-shaped transparent electrodes.
Claim 2
Independent Claim
125 words
A method for fabricating a liquid crystal display device comprising the steps of: forming strip-shaped transparent-electrodes on two substrates at least one of which is transparent so that the light transmittance of the transparent-electrodes is less than that of the at least one transparent substrate; attaching the two substrates to face each other such that the transparent-electrodes on the two substrates intersect each other; injecting a mixture of at least liquid crystal material and photocurable resin into a space between the attached two substrates; and irradiating the mixture with light from at least one side of the attached two substrates using the strip-shaped transparent-electrodes as a photomask so as to form a liquid crystal region surrounded by polymer walls corresponding to the strip-shaped transparent electrodes.
Claim 3
Dependent Claim
48 words
A method for fabricating a liquid crystal display device according to claim 1, wherein the transparent-electrodes are formed of ITO films and 2 sccm or less of oxygen is fed into a reaction apparatus such that the ITO films contain 7 wt. % or more of tin oxide.
Claim 4
Dependent Claim
32 words
A method for fabricating a liquid crystal display device according to claim 1, further comprising the step of forming zinc oxide films on at least top or bottom surface of the transparent-electrodes.
Claim 5
Dependent Claim
37 words
A method for fabricating a liquid crystal display device according to claim 1, further including a step of forming alignment films on a surface of at least one of the pair of electrodes facing the display medium.
Claim 6
Dependent Claim
22 words
A method for fabricating a liquid crystal display device according to claim 1, wherein the transparent-electrode portions include antimony-doped tin oxide films.
Claim 7
Dependent Claim
27 words
A method for fabricating a liquid crystal display device according to claim 5, wherein the antimony-doped tin oxide films have a thickness of 100 nm or more.
Claim 8
Dependent Claim
43 words
A method for fabricating a liquid crystal display device according to claim 1, wherein the light transmittance of the transparent-electrodes is 60% or less than that of the at least one transparent substrate for light having a wavelength of 400 nm or less.
Claim 9
Independent Claim
133 words
A method for fabricating a liquid crystal display device comprising the steps of: forming first transparent-electrodes constituting pixel electrodes in a matrix on a first substrate of two substrates at least a second substrate of which is transparent, and forming second transparent-electrodes so that the light transmittance of the transparent-electrodes is less than that of the at least one transparent substrate, the second transparent-electrodes including thickened portions of a pattern corresponding to and facing the pixel electrodes and thinned portions; attaching the two substrates to face each other such that the first transparent-electrodes and the thickened portions intersect each other; injecting a mixture of at least liquid crystal material and photocurable resin into a space between the attached two substrates; and irradiating the mixture with light from the side of the second substrate.
Claim 10
Independent Claim
133 words
A method for fabricating a liquid crystal display device comprising the steps of: forming first transparent-electrodes constituting pixel electrodes in a matrix on a first substrate of two substrates at least a second substrate of which is transparent, and forming second transparent-electrodes so that the light transmittance of the transparent-electrodes is less than that of the at least one transparent substrate, the second transparent-electrodes including thickened portions of a pattern corresponding to and facing the pixel electrodes and thinned portions; attaching the two substrates to face each other such that the first transparent-electrodes and the thickened portions intersect each other; injecting a mixture of at least liquid crystal material and photocurable resin into a space between the attached two substrates; and irradiating the mixture with light from the side of the second substrate.
Claim 11
Dependent Claim
48 words
A method for fabricating a liquid crystal display device according to claim 8, wherein the transparent-electrodes are formed of ITO films and 2 sccm or less of oxygen is fed into a reaction apparatus such that the ITO films contain 7 wt. % or more of tin oxide.
Claim 12
Dependent Claim
32 words
A method for fabricating a liquid crystal display device according to claim 8, further comprising the step of forming zinc oxide films on at least top or bottom surface of the transparent-electrodes.
Claim 13
Dependent Claim
37 words
A method for fabricating a liquid crystal display device according to claim 8, further including a step of forming alignment films on a surface of at least one of the pair of electrodes facing the display medium.
Claim 14
Dependent Claim
22 words
A method for fabricating a liquid crystal display device according to claim 8, wherein the transparent-electrode portions include antimony-doped tin oxide films.
Claim 15
Dependent Claim
27 words
A method for fabricating a liquid crystal display device according to claim 12, wherein the antimony-doped tin oxide films have a thickness of 100 nm or more.
Claim 16
Dependent Claim
34 words
A method for fabricating a liquid crystal display device according to claim 8, wherein the display medium includes liquid crystal regions formed corresponding to the pixels and polymer walls surrounding the liquid crystal regions.
Claim 17
Dependent Claim
43 words
A method for fabricating a liquid crystal display device according to claim 8, wherein the light transmittance of the transparent-electrodes is 60% or less than that of the at least one transparent substrate for light having a wavelength of 400 nm, or less.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-07-20 | 2002-01-19 | 2002-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-20 | 2006-01-19 | 2006-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-20 | 2010-01-19 | 2010-07-21 | $7700.00 | Window Closed / Lapsed |