Multi-layer matrix type liquid crystal display panel

• US 4,487,480 A
• Filed: 02/25/1983
• Issued: 12/11/1984
• Est. Priority Date: 09/22/1977
• Status: Expired due to Term

• Current Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Original Assignee: Sharp Kabushiki Kaisha (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Wada, Tomio, Nonomura, Keisaku, Uede, Hisashi, Takamatsu, Toshiaki
• Primary Examiner(s): Corbin, John K.
• Assistant Examiner(s): Gallivan, Richard F.
• Application Number:
  US06/469,782
• Time in Patent Office: 655 Days
• Field of Search: 350/333, 350/335, 350/336
• US Class Current: 349/82
• CPC Class Codes: G02F 1/134336 Matrix
• CPC Class Codes: G02F 1/1347 Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells

Abstract

In a multi-layer matrix type liquid crystal display panel having a stack of a plurality of liquid crystal display cells and matrix electrodes provided for a respective one of the liquid crystal display cells, all supports of the respective liquid crystal display cells are piled sequentially one on top of the other with its longitudinal length longer and its lateral length shorter, than the next sequential top support thereby allowing enough room on all sides for electrode connections.

Claims

1. A matrix type liquid crystal display panel including an M×

N array of display elements arranged across a display area, comprising;

first support means, generally planar and for supporting first plurality of electrodes numbering M extending thereacross in a first direction;

second support means arranged generally parallel to said first support means and spaced apart therefrom for supporting a second and third plurality of electrodes, said second support means having first and second support surfaces,

said first support surface generally facing said first support means and having a second plurality of electrodes extending across said first support surface in a second direction substantially orthogonal to said second direction, said first plurality of electrodes numbering 1/2 N and being substantially equispaced across half the display area;

said second support surface having a third plurality of electrodes numbering M extending thereacross in said first direction;

third support means arranged generally parallel to said second support means and spaced apart therefrom, said third support means supporting a fourth plurality of electrodes extending thereacross in said second direction, said fourth plurality of electrodes numbering 1/2 N and being substantially equispaced across the half of said display area not having said second plurality of electrodes arranged thereacross;

a liquid crystal material disposed between said first and second substrates and between said second and third substrates;

the size in said first direction of said first support means being longer than the size of said second support means in that direction which in turn is longer than the size of said third support means in said first direction;

the size in said second direction of said first support means being shorter than the size of said second support means in that direction which in turn is shorter than the size of said third support means in said second direction;

the sizing of said first, second and third support means exposing the ends of said electrodes to facilitate simplified connection to said electrodes.

2. The matrix display of claim 1 wherein said first plurality of electrodes and said third plurality of electrodes are substantially equispaced across the entire display area.

3. The matrix display of claim 2 wherein said second support means has a thickness which is less than the thickness of either said first or third support means.