EP0179913A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Large liquid crystal display
Assignee: Panasonic Holdings Corp
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Filing: 1985-03-27
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Granted: —
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Expires: 2005-03-27
Abstract
Abstract A large liquid crystal display in which many liquid crystal display elements (8) are arranged on a plane, each liquid crystal display element (8) having a liquid crystal (3) placed between transparent substrates that transmit the light emitted from sources (6) of light. The display portion of each liquid crystal display element (8) is covered with a light guide (13) which consists of one or more light guide elements (12) and which guides the rays. Seams (9) among the liquid crystal display elements (8) are also covered by the light guides (13). Namely, the screen is constituted by the light guides (13) that also cover seams (9) among the plurality of liquid crystal display elements (8). Therefore, lattice-like lines do not appear, and the brightness can be made nearly uniform on the whole screen of a large liquid crystal display, enabling a high-quality image to be formed on the whole screen.
Inventors
- 👤 Hideki 5-34 Shibagaki 2-Chome Matsukawa
- 👤 Takeshi Masuyama
- 👤 Minoru Hirota
- 👤 Yasuo Wakahata
- 👤 Masahiro Itoh
- 👤 Shinji Harada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 22:56
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: 32
Claim 1
Independent Claim
111 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided such that one or more light guides are provided for one of said liquid crystal display elements to guide light rays, and in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guides. -
Claim 2
Dependent Claim
111 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided such that one or more light guides are provided for one of said liquid crystal display elements to guide light rays, and in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guides. -
Claim 3
Dependent Claim
32 words
A large-sized liquid crystal display as claimed in Claim 1, wherein said light guide comprises light guide elements whose number is equal to that of pixels of said liquid crystal display elements.
Claim 4
Dependent Claim
35 words
A large-sized liquid crystal display as claimed in Claim 1, wherein said light guide element is formed of a cylindrical solid body having a mirror surface showing high reflection coefficient at an inner surface thereof.
Claim 5
Dependent Claim
40 words
A large-sized liquid crystal display as claimed in Claim 1, wherein said light guide element is formed of a solid body showing a high transmittance and having a mirror surface of a high reflection coefficient at an outer surface thereof.
Claim 6
Dependent Claim
40 words
A large-sized liquid crystal display as claimed in Claim 1, wherein said light guide element is formed of a member having a mirror surface which is formed by aluminum vapor depositting on an inner surface of a cylindrical resin molding.
Claim 7
Dependent Claim
28 words
A large-sized liquid crystal display as claimed in Claim 1, wherein as said liquid crystal arranged in said liquid crystal display element is used guest-host type liquid crystal.
Claim 8
Dependent Claim
62 words
A large-sized liquid crystal display as claimed in Claim 2, wherein said light guide elements are provided with inclination with respect to a plane of transparent substrates forming said liquid crystal elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller and smaller as approaching the center of said panel.
Claim 9
Dependent Claim
132 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided such that one or more light guides are provided for one of said liquid crystal display elements to guide light rays, said light guide element being formed of a cylindrical member having a mirror surface of a high reflection coefficient at an inner surface thereof, and'in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are-also covered by said light guides.
Claim 10
Dependent Claim
132 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided such that one or more light guides are provided for one of said liquid crystal display elements to guide light rays, said light guide element being formed of a cylindrical member having a mirror surface of a high reflection coefficient at an inner surface thereof, and'in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are-also covered by said light guides.
Claim 11
Dependent Claim
32 words
A large-sized liquid crystal display as claimed in Claim 8, wherein said light guide comprises light guide elements whose number is equal to that of pixels of said liquid crystal display elements.
Claim 12
Dependent Claim
40 words
A large-sized liquid crystal display as claimed in Claim 8, wherein said light guide element is formed of a member having a mirror surface which is formed by aluminum vapor depositting on an inner surface of a cylindrical resin molding.
Claim 13
Dependent Claim
28 words
A large-sized liquid crystal display as claimed in Claim 8, wherein as said liquid crystal arranged in said liquid crystal display element is used guest-host type liquid crystal.
Claim 14
Dependent Claim
62 words
A large-sized liquid crystal display as claimed in Claim 8, wherein said light guide elements are provided with inclination with respect to a plane of transparent substrates forming said liquid crystal elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller and smaller as approaching the center of said panel.
Claim 15
Dependent Claim
138 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided such that one or more light guides are provided for one of said liquid crystal display elements to guide light rays, said light guide element being formed of a member showing a high transmittance and having a mirror surface of a high reflection coefficient at an outer surface thereof, and in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guides.
Claim 16
Dependent Claim
138 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided such that one or more light guides are provided for one of said liquid crystal display elements to guide light rays, said light guide element being formed of a member showing a high transmittance and having a mirror surface of a high reflection coefficient at an outer surface thereof, and in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guides.
Claim 17
Dependent Claim
32 words
A large-sized liquid crystal display as claimed in Claim 13, wherein said light guide comprises light guide elements whose number is equal to that of pixels of said liquid crystal display elements.
Claim 18
Dependent Claim
41 words
A large-sized liquid crystal display as claimed in Claim 13, wherein said light guide element is formed of a member having a mirror surface which is formed by aluminum vapor depositting on an inner surface of a cylindrical resin molding. -
Claim 19
Dependent Claim
28 words
A large-sized liquid crystal display as claimed in Claim 15, wherein as said liquid crystal arranged in said liquid crystal display element is used guest-host type liquid crystal.
Claim 20
Dependent Claim
62 words
A large-sized liquid crystal display as claimed in Claim 14, wherein said light guide elements are provided with inclination with respect to a plane of transparent substrates forming said liquid crystal elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller and smaller as approaching the center of said panel.
Claim 21
Dependent Claim
182 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided, each of said light guides being cylindrical and formed such that a mirror surface of a high reflection coefficient is formed, the number of said light guides being equal to that of the pixels of said liquid crystal display elements, in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guide, and in that said light guide elements are provided with inclination with respect to a plane of glass plates forming said liquid crystal elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller and smaller as approaching the center of said panel.
Claim 22
Dependent Claim
182 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided, each of said light guides being cylindrical and formed such that a mirror surface of a high reflection coefficient is formed, the number of said light guides being equal to that of the pixels of said liquid crystal display elements, in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guide, and in that said light guide elements are provided with inclination with respect to a plane of glass plates forming said liquid crystal elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller and smaller as approaching the center of said panel.
Claim 23
Dependent Claim
28 words
A large-sized liquid crystal display as claimed in Claim 18, wherein as said liquid crystal arranged in said liquid crystal display element is used guest-host type liquid crystal.
Claim 24
Dependent Claim
192 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided to guide light rays, each of said light guides being formed such that a mirror surface is formed by alumunum vapor depositing on an inner surface of a cylindridal resin molding, the number of said light guides being equal to that of the pixels of said liquid crystal display elements, in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guide, and in that said light guide elements are provided with inclination with respect to a plane of glass plates forming said liquid crystal elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller and smaller as approaching the center of said panel.
Claim 25
Dependent Claim
192 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided to guide light rays, each of said light guides being formed such that a mirror surface is formed by alumunum vapor depositing on an inner surface of a cylindridal resin molding, the number of said light guides being equal to that of the pixels of said liquid crystal display elements, in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guide, and in that said light guide elements are provided with inclination with respect to a plane of glass plates forming said liquid crystal elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller and smaller as approaching the center of said panel.
Claim 26
Dependent Claim
28 words
A large-sized liquid crystal display as claimed in Claim 20, wherein as said liquid crystal arranged in said liquid crystal display element is used guest-host type liquid crystal.
Claim 27
Dependent Claim
144 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided such that one or more light guides are provided for one of said liquid crystal display elements to guide light rays, in that said light guide has a shape so that its area of its one side is larger than the area of the other side which is connected to said liquid crystal display elements, and in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guides.
Claim 28
Dependent Claim
144 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided such that one or more light guides are provided for one of said liquid crystal display elements to guide light rays, in that said light guide has a shape so that its area of its one side is larger than the area of the other side which is connected to said liquid crystal display elements, and in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guides.
Claim 29
Dependent Claim
32 words
A large-sized liquid crystal display as claimed in Claim 22, wherein said light guide comprises light guide elements whose number is equal to that of pixels of said liquid crystal display elements.
Claim 30
Dependent Claim
28 words
A large-sized liquid crystal display as claimed in Claim 22, wherein as said liquid crystal arranged in said liquid crystal display element is used guest-host type liquid crystal.
Claim 31
Dependent Claim
226 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided to guide light rays, each of said light guides being formed such that a mirror surface is formed by alumunum vapor depositing on an inner surface of a cylindridal resin molding, the number of said light guides being equal to that of the pixels of said liquid crystal display elements, in that said light guide has a shape so that its area of its one side is larger than the area of the other side which is connected to said liquid crystal display elements, in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guides, and in that said light guide elements are provided with inclination with respect to a plane of glass plates forming said liquid crystal elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller and smaller as approaching the center of said panel.
Claim 32
Dependent Claim
226 words
A large-sized liquid crystal display formed by arranging a large number of liquid crystal display elements on a single plane, each of said liquid crystal display elements being formed by arranging liquid crystal between transparent substrates which allow light from a light source to pass through, characterized in that a plurality of light guides are provided to guide light rays, each of said light guides being formed such that a mirror surface is formed by alumunum vapor depositing on an inner surface of a cylindridal resin molding, the number of said light guides being equal to that of the pixels of said liquid crystal display elements, in that said light guide has a shape so that its area of its one side is larger than the area of the other side which is connected to said liquid crystal display elements, in that display portions of said respective liquid crystal display elements are covered by said light guides and junctions between said liquid crystal display elements are also covered by said light guides, and in that said light guide elements are provided with inclination with respect to a plane of glass plates forming said liquid crystal elements such that the inclination angle of said light guide elements is maximum at the periphery of the panel and becomes smaller and smaller as approaching the center of said panel.
References Cited (Backward Citations)
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