US5889570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflection--type liquid crystal displaying device
Assignee: Sharp Corp
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Filing: 1996-12-17
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Granted: 1999-03-30
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Expires: 2016-12-17
Abstract
Abstract A reflection-type liquid crystal displaying device includes an optically transmitting first substrate on which an optically transmitting electrode is at least formed; an anisotropic scattering/reflecting plate for performing a function of anisotropically scattering an incident light and a function of reflecting a light; and a liquid crystal layer disposed between the optically transmitting first substrate and the anisotropic scattering/reflecting plate. The obtained reflection-type liquid crystal displaying device exhibits an extremely bright, uniform, and good displaying capability.
Inventors
- 👤 Seiichi Mitsui
- 👤 Kenichi Iwauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:46
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553; G02F1/133504; G02F1/13356; G02F1/133565; G02F1/137; G02F1/13725
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
60 words
A reflection-type liquid crystal displaying device comprising: at least one optically transmitting first substrate on which an optically transmitting electrode is formed; an anisotropic scattering/reflecting plate for performing a function of anisotropically scattering an incident light and a function of reflecting a light; and a liquid crystal layer disposed between the optically transmitting first substrate and the anisotropic scattering/reflecting plate.
Claim 2
Dependent Claim
60 words
A reflection-type liquid crystal displaying device comprising: at least one optically transmitting first substrate on which an optically transmitting electrode is formed; an anisotropic scattering/reflecting plate for performing a function of anisotropically scattering an incident light and a function of reflecting a light; and a liquid crystal layer disposed between the optically transmitting first substrate and the anisotropic scattering/reflecting plate.
Claim 3
Dependent Claim
65 words
A reflection-type liquid crystal displaying device according to claim 1, wherein the anisotropic scattering/reflecting plate comprises: an anisotropic scattering film for anisotropically scattering the incident light; a reflecting film for reflecting the incident light transmitted through the anisotropic scattering film; and a second substrate, the anisotropic scattering film being formed on the second substrate and the reflecting film being formed on the anisotropic scattering film.
Claim 4
Dependent Claim
18 words
A reflection-type liquid crystal displaying device according to claims 2, wherein the reflecting film comprises a metal film.
Claim 5
Dependent Claim
19 words
A reflection-type liquid crystal displaying device according to claim 2, wherein the reflecting film comprises a dielectric mirror film.
Claim 6
Dependent Claim
58 words
A reflection-type liquid crystal displaying device according to claim 1, wherein the anisotropic scattering/reflecting plate comprises: an anisotropic scattering film for anisotropically scattering the incident light; a reflecting film for reflecting the incident light transmitted through the anisotropic scattering film; and a second substrate, the reflecting film being interposed between the anisotropic scattering film and the second substrate.
Claim 7
Dependent Claim
52 words
A reflection-type liquid crystal displaying device according to claim 1, wherein the anisotropic scattering film comprises a transparent film containing a transparent matrix material in which a transparent substance having a refractive index different from that of the transparent matrix material is dispersed so that the incident light can be anisotropically scattered.
Claim 8
Dependent Claim
46 words
A reflection-type liquid crystal displaying device according to claim 6, wherein the transparent substance has an anisotropic shape and is homogeneously dispersed in an orderly manner in the transparent film containing the transparent matrix material so that the substance particles are arranged parallel to each other.
Claim 9
Dependent Claim
28 words
A reflection-type liquid crystal displaying device according to claim 7, wherein the anisotropic shape of the transparent substance is a spheroid, a rectangular parallelepiped, or a circular cylinder.
Claim 10
Dependent Claim
29 words
A reflection-type liquid crystal displaying device according to claim 6, wherein the difference of refractive indices between the transparent matrix material and the transparent substance is at least 0.0001.
Claim 11
Dependent Claim
19 words
A reflection-type liquid crystal displaying device according to claim 6, wherein the transparent matrix material comprises a transparent resin.
Claim 12
Dependent Claim
84 words
A reflection-type liquid crystal displaying device comprising: a liquid crystal display cell, a reflecting plate disposed behind the display cell, and an optical control film, disposed between the display cell and the reflection plate, for controlling reflection characteristics of the reflecting plate, wherein the optical control film is opaque for incident light with an incident angle within a predetermined value and is transparent for incident light with an incident angle more than the predetermined value, thereby uniformizing a displaying capability of the display cell.
Claim 13
Dependent Claim
84 words
A reflection-type liquid crystal displaying device comprising: a liquid crystal display cell, a reflecting plate disposed behind the display cell, and an optical control film, disposed between the display cell and the reflection plate, for controlling reflection characteristics of the reflecting plate, wherein the optical control film is opaque for incident light with an incident angle within a predetermined value and is transparent for incident light with an incident angle more than the predetermined value, thereby uniformizing a displaying capability of the display cell.
Claim 14
Dependent Claim
46 words
A reflection-type liquid crystal displaying device according to claim 11, wherein the optical control film comprises an anisotropic scattering film including a transparent film containing a transparent matrix material in which a transparent substance different from the transparent matrix material in refractive index is homogeneously dispersed.
References Cited (Backward Citations)
US4088400A
Cited
US3910681A
Cited
US3837729A
Cited
US3846014A
Cited
US4492432A
Cited
US4436377A
Cited
US4456336A
Cited
EP0464499A2
Cited
JPH04314522A
Cited
US5402324A
Cited
US5548425A
Cited
JPH07114013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-29 | 2002-09-28 | 2003-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-29 | 2006-09-28 | 2007-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-29 | 2010-09-28 | 2011-03-30 | $7700.00 | Window Closed / Lapsed |