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New Pixel Electrode Design and Cell Structure for Fabricating Multi-Domain Twisted Nematic, Multi-Domain Parallel Electrically Controllable Birefringent and Multi-Domain Guest Host Liquid Crystal Displays having Rectangular Pixels

IP.com Disclosure Number: IPCOM000118652D
Original Publication Date: 1997-May-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

John, RA: AUTHOR [+2]

Abstract

The Figure shows the pixel electrode structure and the rubbing directions of the multi-domain Liquid Crystal Displays (LCDs): (a) Pixel electrode structure. (b) Rubbing directions for the multi-domain left-handedness Twisted Nematic (TN) cell. (c) Rubbing directions for the multi-domain right-handedness TN cell. (d) Rubbing directions for the two-domain parallel Electrically Controllable Birefringent (ECB) cell or for the two-domain Guest Host (GH) cell.

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New Pixel Electrode Design and Cell Structure for Fabricating Multi-Domain
Twisted Nematic, Multi-Domain Parallel Electrically Controllable
Birefringent and Multi-Domain Guest Host Liquid Crystal Displays
having Rectangular Pixels

The Figure shows the pixel electrode structure and the rubbing
directions of the multi-domain Liquid Crystal Displays (LCDs): (a)
Pixel electrode structure.  (b) Rubbing directions for the
multi-domain left-handedness Twisted Nematic (TN) cell.  (c) Rubbing
directions for  the multi-domain right-handedness TN cell.  (d)
Rubbing directions for  the two-domain parallel Electrically
Controllable Birefringent (ECB) cell  or for the two-domain Guest
Host (GH) cell.

      Disclosed are a new rectangular pixel electrode design and cell
structure for fabricating multi-domain TN, multi-domain parallel ECB
and multi-domain GH LCDs.

      The Figure shows the new pixel electrode structure and the
rubbing directions for multi-domain TN, multi-domain parallel ECB,
and multi-domain GH LCDs, all of which are made up of rectangular
pixels.  The twist angle of the TN cell can be any value from 0
degree to 360 degrees with a proper change in the rubbing directions.
The bottom electrode has one slot cut-out, and the top electrode has
two slots cut-out.  The pixel is divided into four domains.  The
Liquid Crystal (LC) molecules in two domains will till up and the LC
molecules in the other two domains will tilt down.  In principle,
each pixel can be...