Patent US4874227A successfully refreshed from Google Patents.
US4874227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Large-sized liquid crystal display
Assignee: Panasonic Holdings Corp
•
Filing: 1988-02-09
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Granted: 1989-10-17
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Expires: 2008-02-09
Abstract
Abstract A large number of liquid crystal display devices is formed on a single plane, each of the liquid crystal display devices being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through. Display portions of the respective liquid crystal display devices are covered by a masking member (23) and a light guide which is formed of light guide devices, one or more of which being provided for each of said liquid crystal display devices, and junctions between the liquid crystal display devices are also covered by the light guide. With this structure, when the light guides are formed such that the junctions between the plurality of liquid crystal display devices are also covered, lattice-like non-display lines do not appear, thereby providing substantially visually uniform brightness throughout the entire screen of the large-sized liquid crystal display and improving the entire image.
Inventors
- 👤 Hideki Matsukawa
- 👤 Takeshi Masuyama
- 👤 Minoru Hirota
- 👤 Yasuo Wakahata
- 👤 Masahiro Itoh
- 👤 Shinji Harada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:30
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133524; G09; G09F; G09F9/00; G09F9/30; G09F9/35; G02F1/13336
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
316 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices arranged on a single plane, each of said liquid crystal devices being formed by arranging pixels in a guest-host liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element corresponding to each of said liquid crystal display devices for guiding light rays, each of said light guide elements including a hollow cylindrical resin molding having a mirror surface formed by aluminum vapor being deposited on an inner surface of said hollow cylindrical resin molding, the number of said light guide elements being equal to that of said pixels in said liquid crystal display devices, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices, each of said light guide elements being inclined with respect to a plane of glass plates forming said liquid crystal display devices such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached, said light guides being shaped such that its area of its one side is larger than the area of the other side which is connected to said liquid crystal display devices, each liquid guide element being provided with a color filter at the front side thereof by way of printing using color ink so as to provide colors red, blue, or green; and (c) a plurality of masking opaque members each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 2
Dependent Claim
316 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices arranged on a single plane, each of said liquid crystal devices being formed by arranging pixels in a guest-host liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element corresponding to each of said liquid crystal display devices for guiding light rays, each of said light guide elements including a hollow cylindrical resin molding having a mirror surface formed by aluminum vapor being deposited on an inner surface of said hollow cylindrical resin molding, the number of said light guide elements being equal to that of said pixels in said liquid crystal display devices, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices, each of said light guide elements being inclined with respect to a plane of glass plates forming said liquid crystal display devices such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached, said light guides being shaped such that its area of its one side is larger than the area of the other side which is connected to said liquid crystal display devices, each liquid guide element being provided with a color filter at the front side thereof by way of printing using color ink so as to provide colors red, blue, or green; and (c) a plurality of masking opaque members each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 3
Dependent Claim
142 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element corresponding to each of said liquid crystal display devices for guiding light rays, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices; and (c) a plurality of opaque masking members each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 4
Dependent Claim
142 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element corresponding to each of said liquid crystal display devices for guiding light rays, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices; and (c) a plurality of opaque masking members each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 5
Dependent Claim
35 words
A large-sized liquid crystal display as claimed in claim 2, further comprising a plurality of diffusion plates, each of said diffusion plates being positioned at the front surface of each of said light guide elements.
Claim 6
Dependent Claim
35 words
A large-sized liquid crystal display as claimed in claim 2, wherein said light guide comprises light guide elements whose number is equal to that of said pixels in each of said liquid crystal display devices.
Claim 7
Dependent Claim
32 words
A large-sized liquid crystal display as claimed in claim 2, wherein said light guide element is formed of a hollow cylindrical solid body having a mirror surface at an inner surface thereof.
Claim 8
Dependent Claim
32 words
A large-sized liquid crystal display as claimed in claim 2, wherein said light guide element is formed of a light conductive solid body having a mirror surface at an outer surface thereof.
Claim 9
Dependent Claim
42 words
A large-sized liquid crystal display as claimed in claim 2, wherein said light guide element is formed of a member having a mirror surface which is formed by aluminum vapor being deposited on an inner surface of a hollow cylindrical resin molding.
Claim 10
Dependent Claim
26 words
A large-sized liquid crystal display as claimed in claim 2, wherein said liquid crystal arranged in said liquid crystal display device comprises a guest-host liquid crystal.
Claim 11
Dependent Claim
64 words
A large-sized liquid crystal display as claimed in claim 4, wherein said light guide elements are respectively provided with an inclination with respect to a plane or transparent substrates forming said liquid crystal display device such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached.
Claim 12
Dependent Claim
166 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element corresponding to each of said liquid crystal display devices for guiding light rays, each of said light guide elements including a hollow cylindrical member having a mirror surface at an inner surface of said hollow cylindrical member, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices; and (c) a plurality of opaque masking members each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 13
Dependent Claim
166 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element corresponding to each of said liquid crystal display devices for guiding light rays, each of said light guide elements including a hollow cylindrical member having a mirror surface at an inner surface of said hollow cylindrical member, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices; and (c) a plurality of opaque masking members each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 14
Dependent Claim
35 words
A large-sized liquid crystal display as claimed in claim 10, wherein said light guide comprises light guide elements whose number is equal to that of said pixels in each of said liquid crystal display devices.
Claim 15
Dependent Claim
42 words
A large-sized liquid crystal display as claimed in claim 10, wherein said light guide element is formed of a member having a mirror surface which is formed by aluminum vapor being deposited on an inner surface of a hollow cylindrical resin molding.
Claim 16
Dependent Claim
26 words
A large-sized liquid crystal display as claimed in claim 10, wherein said liquid crystal arranged in said liquid crystal display device comprises a guest-host liquid crystal.
Claim 17
Dependent Claim
63 words
A large-sized liquid crystal display as claimed in claim 10, wherein said light guide elements are provided with an inclination with respect to a plane of transparent substrates forming said liquid crystal display devices such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached.
Claim 18
Dependent Claim
164 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element corresponding to each of said liquid crystal display devices for guiding light rays, each of said light guide elements including a light conductive member having a mirror surface at an outer surface of said member, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices; and (c) a plurality of opaque masking members each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 19
Dependent Claim
164 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element corresponding to each of said liquid crystal display devices for guiding light rays, each of said light guide elements including a light conductive member having a mirror surface at an outer surface of said member, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices; and (c) a plurality of opaque masking members each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 20
Dependent Claim
35 words
A large-sized liquid crystal display as claimed in claim 15, wherein said light guide comprises light guide elements whose number is equal to that of said pixels in each of said liquid crystal display devices.
Claim 21
Dependent Claim
26 words
A large-sized liquid crystal display as claimed in claim 15, wherein said liquid crystal arranged in said liquid crystal display device comprises a guest-host liquid crystal.
Claim 22
Dependent Claim
63 words
A large-sized liquid crystal display as claimed in claim 16, wherein said light guide elements are provided with an inclination with respect to a plane of transparent substrates forming said liquid crystal display devices such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached.
Claim 23
Dependent Claim
227 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element, each of said light guide elements including a hollow cylindrical member having a mirror surface at an inner surface of said hollow cylindrical member, the number of said light guide elements being equal to that of said pixels in said liquid crystal display devices, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices, each of said light guide elements being provided with an inclination with respect to a plane of glass plates forming said liquid crystal display elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached; and (c) a plurality of opaque masking members each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 24
Dependent Claim
227 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element, each of said light guide elements including a hollow cylindrical member having a mirror surface at an inner surface of said hollow cylindrical member, the number of said light guide elements being equal to that of said pixels in said liquid crystal display devices, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices, each of said light guide elements being provided with an inclination with respect to a plane of glass plates forming said liquid crystal display elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached; and (c) a plurality of opaque masking members each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 25
Dependent Claim
26 words
A large-sized liquid crystal display as claimed in claim 19, wherein said liquid crystal arranged in said liquid crystal display device comprises a guest-host liquid crystal.
Claim 26
Dependent Claim
229 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element, each of said light guide elements including a mirror surface formed by aluminum vapor being deposited on an inner surface of a hollow cylindrical resin molding, the number of said light guide elements being equal to that of said pixels in said liquid crystal display devices, each of said light guides being interposed to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices, each of said light guide elements being provided with an inclination with respect to a plane of glass plates forming said liquid crystal display element such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached; and (c) a plurality of opaque masking member each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 27
Dependent Claim
229 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element, each of said light guide elements including a mirror surface formed by aluminum vapor being deposited on an inner surface of a hollow cylindrical resin molding, the number of said light guide elements being equal to that of said pixels in said liquid crystal display devices, each of said light guides being interposed to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices, each of said light guide elements being provided with an inclination with respect to a plane of glass plates forming said liquid crystal display element such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached; and (c) a plurality of opaque masking member each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 28
Dependent Claim
26 words
A large-sized liquid crystal display as claimed in claim 21, wherein said liquid crystal arranged in said liquid crystal display device comprises a guest-host liquid crystal.
Claim 29
Dependent Claim
173 words
A large-sized liquid crystal display comprising: (a) a large amount of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element corresponding to each of said liquid crystal display devices for guiding light rays, said light guides being shaped such that its area of its one side is larger than the area of the other side which is connected to said liquid crystal display devices, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices; and (c) a plurality of opaque masking member each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 30
Dependent Claim
173 words
A large-sized liquid crystal display comprising: (a) a large amount of liquid crystal display devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element corresponding to each of said liquid crystal display devices for guiding light rays, said light guides being shaped such that its area of its one side is larger than the area of the other side which is connected to said liquid crystal display devices, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices; and (c) a plurality of opaque masking member each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 31
Dependent Claim
35 words
A large-sized liquid crystal display as claimed in claim 23, wherein said light guide comprises light guide elements whose number is equal to that of said pixels in each of said liquid crystal display devices.
Claim 32
Dependent Claim
26 words
A large-sized liquid crystal display as claimed in claim 23, wherein said liquid crystal arranged in said liquid crystal display device comprises a guest-host liquid crystal.
Claim 33
Dependent Claim
259 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element, each of said light guide elements including a mirror surface formed by alumnium vapor being deposited on an inner surface of a hollow cylindrical resin molding, the number of said light guide elements being equal to that of said pixels in said liquid crystal display devices, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices, said light guides being shaped such that its area of its one side is larger than the area of the other side which is connected to said liquid crystal display devices, each of said light guide elements being provided with an inclination with respect to a plane of glass plates forming said liquid crystal display elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached; and (c) a plurality of opaque masking member each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
Claim 34
Dependent Claim
259 words
A large-sized liquid crystal display comprising: (a) a large number of liquid crystal devices on a single plane, each formed by arranging pixels in liquid crystal interposed between transparent substrates which allow light from a light source to pass through; (b) a plurality of light guides each having at least one light guide element, each of said light guide elements including a mirror surface formed by alumnium vapor being deposited on an inner surface of a hollow cylindrical resin molding, the number of said light guide elements being equal to that of said pixels in said liquid crystal display devices, each of said light guides being positioned to cover display portions of said respective liquid crystal display devices and also junctions between said liquid crystal display devices, said light guides being shaped such that its area of its one side is larger than the area of the other side which is connected to said liquid crystal display devices, each of said light guide elements being provided with an inclination with respect to a plane of glass plates forming said liquid crystal display elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller as the center of said panel is approached; and (c) a plurality of opaque masking member each provided at the front surface of each of said liquid crystal display devices such that said pixels in said liquid crystal display devices are respectively encircled thereby when viewed from the front of said liquid crystal display devices.
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USPTO Annuity & Maintenance Windows
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|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |