EP0034796A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Liquid crystal display device
Assignee: Toshiba Corp
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Filing: 1981-02-17
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Granted: —
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Expires: 2001-02-17
Abstract
Abstract A liquid crystal display device is proposed which has a substrate (12) having electrodes (48) corresponding to the display picture elements, liquid crystal (22) arranged on the substrate (10) through a dielectric mirror (14), and a transparent electrode (18) arranged on liquid crystal (22) and applying electricfields to the liquid crystal (22) for each picture element through the respective electrodes (48) on the substrate (12). The substrate (12) has memory cells which are capable of storing data and of becoming electrically conductive, this conductive condition being determined and sustained based on the contents of the stored data. The electric fields are applied to the liquid crystal (22)throughthese memory cells.
Inventors
- 👤 Hiroshi Kobayashi
- 👤 Hisashi Yamada
- 👤 Yukimasa Uchida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 17:02
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/2007; G09G3/2011; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133553; G02F1/136; G02F1/1362; G02F1/136277; G09G3/34; G09G3/36; G09G3/3611; G09G3/3648; G09G2300/00; G09G2300/08; G09G2300/0809; G09G2300/0842; G09G2300/0857; G09G3/207; G09G3/2074
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
139 words
A liquid crystal display device comprising a substrate (12) having a power source terminal (24), liquid crystal (22) arranged at the surface of the substrate (12) and a transparent electrode (18) arranged at the surface of the liquid crystal (22) holding the liquid crystal (22) in cooperation with the substrate (12) and applying an electric field to the liquid crystal (22) through the substrate (12), characterized in that said substrate (12) comprises a memory array including a plurality of cells capable of storing data and of becoming electrically conductive, this conductive condition being determined and sustained based on the contents of the stored data, a data terminal (42) connected to said cells of said memory array and supplied with data to be stored and.an address terminal (46) connected to said cells of said memory array for selecting said cell.
Claim 2
Dependent Claim
139 words
A liquid crystal display device comprising a substrate (12) having a power source terminal (24), liquid crystal (22) arranged at the surface of the substrate (12) and a transparent electrode (18) arranged at the surface of the liquid crystal (22) holding the liquid crystal (22) in cooperation with the substrate (12) and applying an electric field to the liquid crystal (22) through the substrate (12), characterized in that said substrate (12) comprises a memory array including a plurality of cells capable of storing data and of becoming electrically conductive, this conductive condition being determined and sustained based on the contents of the stored data, a data terminal (42) connected to said cells of said memory array and supplied with data to be stored and.an address terminal (46) connected to said cells of said memory array for selecting said cell.
Claim 3
Dependent Claim
23 words
A liquid crystal display device according to claim 1, further comprising a dielectric mirror interposed between said memory array and said liquid crystal.
Claim 4
Dependent Claim
19 words
. A liquid crystal-display device according to claim 1 or 2, in which said cell comprises a flip-flop circuit.
Claim 5
Dependent Claim
39 words
. A liquid crystal display device according to claim 1 or 2, in which said cell comprises a nonvolatile memory transistor having an insulation layer for trapping electrons and a transistor controlled by the electrons in said insulation layer.
Claim 6
Dependent Claim
35 words
A liquid crystal display device according to claim 1 or 2, in which said cell comprises an insulation layer for trapping electrons and a capacitor whose capacitance changes by the electrons in said insulation layer.
Claim 7
Dependent Claim
25 words
A liquid crystal display device according to claim 1 or 2, in which said cell comprises an amorphous semiconductor whose resistance changes by phase transition.
Claim 8
Dependent Claim
39 words
A liquid crystal display device according to claim 1 or 2, in which said cell comprises a photosensor for sensing the light transmitted through said liquid crystal and a flip-flop circuit controlled by an output signal of said photosensor.
Claim 9
Dependent Claim
173 words
A liquid crystal display device comprising a substrate (12) having power source terminals (134, 136), liquid crystal (22) arranged at the surface of the substrate (12) and a transparent electrode (18) arranged at the surface. of the liquid crystal (22) holding the liquid crystal (22) in cooperation with the substrate (12) and applying an electric field to the liquid crystal (22) through the substrate (12), characterized in that said substrate (12) comprises a memory .array consisting of a plurality of cells capable of storing data and of becoming electrically conductive, this conductive condition being determined and sustained basec on the contents of the stored data, a data terminal (42) connected to said cells of said memory array and supplied with data to be stored and an address terminal (46) connected to said cells of said memory array for selecting said cell and a plurality of said transparent electrodes (18) are arranged on the surface of said liquid crystal on said respective cells of said memory array for applying a plurality of electric fields.
Claim 10
Dependent Claim
173 words
A liquid crystal display device comprising a substrate (12) having power source terminals (134, 136), liquid crystal (22) arranged at the surface of the substrate (12) and a transparent electrode (18) arranged at the surface. of the liquid crystal (22) holding the liquid crystal (22) in cooperation with the substrate (12) and applying an electric field to the liquid crystal (22) through the substrate (12), characterized in that said substrate (12) comprises a memory .array consisting of a plurality of cells capable of storing data and of becoming electrically conductive, this conductive condition being determined and sustained basec on the contents of the stored data, a data terminal (42) connected to said cells of said memory array and supplied with data to be stored and an address terminal (46) connected to said cells of said memory array for selecting said cell and a plurality of said transparent electrodes (18) are arranged on the surface of said liquid crystal on said respective cells of said memory array for applying a plurality of electric fields.
Claim 11
Dependent Claim
23 words
A liquid crystal display device according to claim 8, further comprising a dielectric mirror interposed between said memory array and said liquid crystal.
Claim 12
Dependent Claim
38 words
A liquid crystal display device according to claim 8 or 9, in which said cell comprises a nonvolatile memory transistor having an insulation layer for trapping electrons and a transistor controlled by the electrons in said insulation layer.
Claim 13
Dependent Claim
35 words
A liquid crystal display device according to claim 8 or 9, in which said cell comprises an insulation layer for trapping electrons and a capacitor whose capacitance changes by the electrons in said insulation layer.
Claim 14
Dependent Claim
26 words
A liquid crystal display device according to claim 8 or 9, in which said memory array is formed on an amorphous silicon or monocrystalline silicon substrate.
Claim 15
Dependent Claim
164 words
A liquid crystal display device comprising a substrate (200) having power source terminal, liquid crystal (212) arranged at the surface of the substrate (200) and a transparent electrode (214) arranged at the surface of the liquid crystal (212), holding the liquid crystal in cooperation with the substrate (200), and applying an electric field to the liquid crystal through the substrate (200) in cooperation with the power source terminal, characterized in that a plurality of said transparent electrodes (214) are arranged parallel to each other on a transparent substrate to constitute a selection line paenl (210) in cooperation with said transparent substrate and said substrate (200) comprises a plurality of cells capable of storing data and of becoming electrically conductive, this conductive condition being determined and sustained based on the contents of the stored data and a plurality of data lines connected to said cells and supplied with data to be stored, said data lines being arranged in a direction perpendicular to said transparent electrodes.
Claim 16
Dependent Claim
164 words
A liquid crystal display device comprising a substrate (200) having power source terminal, liquid crystal (212) arranged at the surface of the substrate (200) and a transparent electrode (214) arranged at the surface of the liquid crystal (212), holding the liquid crystal in cooperation with the substrate (200), and applying an electric field to the liquid crystal through the substrate (200) in cooperation with the power source terminal, characterized in that a plurality of said transparent electrodes (214) are arranged parallel to each other on a transparent substrate to constitute a selection line paenl (210) in cooperation with said transparent substrate and said substrate (200) comprises a plurality of cells capable of storing data and of becoming electrically conductive, this conductive condition being determined and sustained based on the contents of the stored data and a plurality of data lines connected to said cells and supplied with data to be stored, said data lines being arranged in a direction perpendicular to said transparent electrodes.
Claim 17
Dependent Claim
24 words
A liquid crystal display device according to claim 13, further comprising a dielectric mirror interposed between said data line panel and said liquid crystal.
Claim 18
Dependent Claim
39 words
A liquid crystal display device according to claim 13 or 14, in which said selection line panel is formed on a glass substrate, and said transparent electrodes are connected to switching elements made of amorphous silicon or monocrystalline silicon.
Claim 19
Dependent Claim
38 words
A liquid crystal display device according to claim 13 or 14, in which said selection line is formed on a sapphire substrate, and said transparent electrodes are connected to switching elements made of amorphous silicon or monocrystalline silicon.
Claim 20
Dependent Claim
38 words
A liquid crystal display device according to claim 13 or 14, in which said cell comprises a nonvolatile memory transistor having an insulation layer for trapping electrons and a transistor controlled by the electrons in .said insulation layer.
Claim 21
Dependent Claim
36 words
A liquid crystal display device according to claim 13 or 14, in which said cell comprises an insulation layer for trapping electrons and a capacitor whose capacitance is controlled by the electrons in said insulation layer.
Claim 22
Dependent Claim
39 words
A liquid crystal display device according to claim 13 or 14, in which a plurality of said transparent electrodes are arranged for one cell for applying a plurality of electric fields on said liquid crystal on said one cell.
References Cited (Backward Citations)
No citation records indexed.
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