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US5128786A Expired / Lapsed US ⏱️ 0.0 years remaining

Liquid crystal display device having light shielding member with discontinous pattern

Assignee: Casio Computer Co Ltd
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Filing: 1990-07-10
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Granted: 1992-07-07
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Expires: 2010-07-10
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Abstract

Abstract A liquid crystal display device includes a pair of substrates opposed to each other, a plurality of first electrodes provided on one of the paired substrates, a plurality of second electrodes mounted over the other base plate to oppose the first electrodes, liquid crystal material interposed between the first and the second electrodes to form a plurality of image elements at a plurality of positions corresponding to those points of the first and second electrodes which are opposed to each other, and a black mask for shielding light from leaking through clearances between the adjacent image elements. The image elements are arranged like a matrix and the black mask is formed discontinuous in the vertical and/or horizontal direction.

Inventors

  • 👤 Masaki Yanagisawa

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 15:42
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133512

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 256 words
A liquid crystal display device having a plurality of image elements arranged like a matrix, comprising: a pair of substrates arranged to oppose to each other; a plurality of first electrodes mounted over one of the paired substrates; at least one second electrode mounted over the other of the paired substrates to oppose to the plurality of first electrodes; liquid crystal material interposed between the first and second electrodes, and the plural areas of said liquid crystal material corresponding to the portions of the first and second plural electrodes which are opposed to each other form plural image elements and the light transmission of said plural image elements are selectively controlled by selectively supplying a current or a voltage having a predetermined value of the first and second electrodes; an electrically conductive opaque member mounted on at least one of the paired substrates so as to have a discontinuous pattern having pattern portions which extend in row and column directions of said matrix between the adjacent image elements to substantially shield light passing through clearances between the adjacent image elements, at least one of said row and column direction extending pattern portions of said discontinuous pattern of said electrically conductive opaque member being cut at a plurality of positions along a direction which is perpendicular to an extending direction of at least one of extending pattern portions, to thereby form said electrically conductive opaque member into discrete portions; and an electrically insulating member interposed between the electrically conductive opaque member and the plurality of first electrodes.
Claim 2
Dependent Claim 256 words
A liquid crystal display device having a plurality of image elements arranged like a matrix, comprising: a pair of substrates arranged to oppose to each other; a plurality of first electrodes mounted over one of the paired substrates; at least one second electrode mounted over the other of the paired substrates to oppose to the plurality of first electrodes; liquid crystal material interposed between the first and second electrodes, and the plural areas of said liquid crystal material corresponding to the portions of the first and second plural electrodes which are opposed to each other form plural image elements and the light transmission of said plural image elements are selectively controlled by selectively supplying a current or a voltage having a predetermined value of the first and second electrodes; an electrically conductive opaque member mounted on at least one of the paired substrates so as to have a discontinuous pattern having pattern portions which extend in row and column directions of said matrix between the adjacent image elements to substantially shield light passing through clearances between the adjacent image elements, at least one of said row and column direction extending pattern portions of said discontinuous pattern of said electrically conductive opaque member being cut at a plurality of positions along a direction which is perpendicular to an extending direction of at least one of extending pattern portions, to thereby form said electrically conductive opaque member into discrete portions; and an electrically insulating member interposed between the electrically conductive opaque member and the plurality of first electrodes.
Claim 3
Dependent Claim 17 words
The liquid crystal display device according to claim 1, wherein said opaque member comprises a metal film.
Claim 4
Dependent Claim 59 words
The liquid crystal display device according to claim 1, wherein said first electrodes comprise plural pieces of transparent electrically conductive film formed over said one of the substrates, extending in a predetermined direction; and said second electrodes comprise plural pieces of transparent electrically conductive film formed over said other substrate, extending in a direction perpendicular to the predetermined direction.
Claim 5
Dependent Claim 53 words
The liquid crystal display device according to claim 3, wherein said opaque member extends in one and another directions, said another direction being perpendicular to said one direction, and is cut off at a plurality of positions along said one and said another directions, so that said opaque member has a discontinuous pattern.
Claim 6
Dependent Claim 53 words
The liquid crystal display device according to claim 1, wherein said opaque member extends in one and another direction, said another direction being perpendicular to said one direction, and is cut off at a plurality of positions along said one or said another direction, so that said opaque member has a discontinuous pattern.
Claim 7
Dependent Claim 39 words
The liquid crystal display device according to claim 1, wherein said opaque member is made continuous in a direction in which the first electrodes extend but discontinuous in another direction perpendicular to the extending direction of the first electrodes.
Claim 8
Dependent Claim 17 words
The liquid crystal display device according to claim 6, wherein said first electrodes serve as signal electrodes.
Claim 9
Dependent Claim 52 words
The liquid crystal display device according to claim 1, wherein said opaque member extends in a first direction, in which the first electrodes extend, and in a second direction perpendicular to the extending direction of the first electrodes, and is cut off at a plurality positions along said first and second directions.
Claim 10
Dependent Claim 54 words
The liquid crystal display device according to claim 1, wherein said opaque member is cut off at a plurality of positions corresponding to the portions at which the clearances extending between adjacent image elements in one direction and the other clearances extending between adjacent image elements in another direction perpendicular to said one direction.
Claim 11
Dependent Claim 18 words
The liquid crystal display device according to claim 1, wherein said insulating member includes a color filter layer.
Claim 12
Dependent Claim 35 words
The liquid crystal display device according to claim 10, wherein said color filter layer includes a plurality of single-color filters different in color and arranged like stripes so as to correspond to the second electrodes.
Claim 13
Dependent Claim 34 words
The liquid crystal display device according to claim 1, wherein said insulating member includes a plurality of the color filters having a plurality of colors; and a protection layer for protecting the color filters.
Claim 14
Dependent Claim 31 words
The liquid crystal display device according to claim 12, wherein said protection layer comprises a first protection film made of organic material; and a second protection film made of inorganic material.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1995-07-07 1996-01-06 1996-07-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1999-07-07 2000-01-06 2000-07-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2003-07-07 2004-01-06 2004-07-07 $7700.00 Window Closed / Lapsed

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