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EP0845697A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Active matrix type liquid crystal display device resistant to static electricity

Assignee: Hitachi Ltd
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Filing: 1995-08-07
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Granted: —
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Expires: 2015-08-07
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Abstract

Abstract An object of the invention is to provide a liquid crystal display device against which counter-measures are taken for static electricity from the step of forming wiring lines of a substrate on the side where thin film transistors or switching elements are formed to the step of completing module mounting and which is suited for improving the productivity and for lowering the production cost. In order to achieve this object, according to the invention, there is provided a liquid crystal display device having an active matrix liquid crystal display element where a plurality of gate lines and a plurality of drain lines intersecting the gate lines through an insulating film are juxtaposed to each other over the face, opposed to a liquid crystal layer, of a first one of two transparent insulating substrates overlapping through the liquid crystal layer, and a switching element is disposed in the vicinity of each of the intersections between said gate lines and said drain lines; characterized in that resistor elements for connecting said gate lines or said drain lines are disposed inside a seal and arranged in one or more lines outside an effective pixel region, or additional gate lines and additional pixels are arranged in a plurality of lines outside the first gate line or the last gate line in the effective pixel region, and said additional gate lines are short-circuited with each other at their end portions.

Inventors

  • 👤 Kuniyuki Matsunaga
  • 👤 Makoto Tsumura
  • 👤 Junichi Ohwada
  • 👤 Masahiko Suzuki
  • 👤 Shiro Ueda

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 21:58
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1343; G02F1/136; G02F1/1362; G02F1/136204; G02F1/1345

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 116 words
A liquid crystal display device having an active matrix liquid crystal display element where a plurality of gate lines and a plurality of drain lines intersecting the gate lines through an insulating film are juxtaposed to each other over the face, opposed to a liquid crystal layer, of a first one of two transparent insulating substrates joined together through the liquid crystal layer, and a switching element is disposed in the vicinity of each of the intersections between said gate lines and said drain lines, characterized in that resistor elements for connecting said gate lines or said drain lines are disposed inside a seal and arranged in one or more lines outside an effective pixel region.
Claim 2
Dependent Claim 39 words
A liquid crystal display device as set forth in Claim 1, characterized in that resistor elements for connecting said gate lines or said drain lines are arranged outside the seal in addition to said resistor elements inside the seal.
Claim 3
Dependent Claim 52 words
A liquid crystal display device as set forth in Claim 1, characterized in that the distance between two conductor electrodes constituting said resistor elements inside the seal and between the drain lines is substantially equal to the minimum size of the channel portions of thin film transistors constituting the effective pixel region.
Claim 4
Dependent Claim 27 words
A liquid crystal display device as set forth in Claim 1, characterized in that said resistor elements is constructed to include a semiconductor film having a photoconductivity.
Claim 5
Dependent Claim 129 words
A liquid crystal display device having an active matrix liquid crystal display element, where a plurality of gate lines and a plurality of drain lines intersecting the gate lines through an insulating film are juxtaposed to each other over the face, opposed to a liquid crystal layer, of a first one of two transparent insulating substrates overlapping through the liquid crystal layer, and a switching element is disposed in the vicinity of each of the intersections between said gate lines and said drain lines characterized in that additional gate lines and additional pixels are arranged in a plurality of lines outside the first gate line or the last gate line in the effective pixel region, and said additional gate lines are short-circuited with each other at their end portions.
Claim 6
Dependent Claim 90 words
A liquid crystal display device having an active matrix liquid crystal display element of a flip-chip type, characterized in that resistor elements for connecting drain lines on one substrate are inside a seal, extended in a direction X to the outside of an effective pixel region, and arranged in one or more lines, and resistor elements are outside the seal and also arranged between the wiring lines of gate lines on the output side of drive ICs mounted on the face of the same substrate, and between the drain lines.
Claim 7
Dependent Claim 56 words
A liquid crystal display device as set forth in Claim 6, characterized in that additional gate lines and additional pixels are arranged in a plurality of lines outside the first gate line or the last gate line in the effective pixel region, and said additional gate lines are short-circuited with each other at their end portions.

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