Browse Prior Art Database

Liquid Crystal Displays

IP.com Disclosure Number: IPCOM000117569D
Original Publication Date: 1996-Apr-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

Kodate, M: AUTHOR

Abstract

Disclosed is a novel cell design method for Liquid Crystal Display (LCD). The feature of this design is the use of pillars as spacers for LCD's cell-gap control, which are arranged systematically on a substrate by the following specific rule. By using this design, higher display quality of LCD is realized.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Liquid Crystal Displays

      Disclosed is a novel cell design method for Liquid Crystal
Display (LCD).  The feature of this design is the use of pillars as
spacers for LCD's cell-gap control, which are arranged systematically
on a substrate by the following specific rule.  By using this design,
higher display quality of LCD is realized.

      (x,y) is a position-vector on the LCD substrate.  (a,b) and
(c,d) are position-vectors that indicate displacements from an
original pillar to adjacent pillars on the LCD substrate.  Then, a
position of any pillar is indicated as
     (x,y) = m * (a,b) + n * (c,d)
  where a,b,c,d,m,n,x,y is an integer, and unit-vector (1,1) is a
pixel pitch or a sub-pixel pitch.  Then, density of pillars on the
LCD substrate is indicated as
      1 / | a * d - b * c |.

And then, the arrangement rule is described as follows:
      |a| = 1 or |b| = 1,
    and
      |c| = 1 or |d| = 1.

The Figure shows an example of the presently designed arrangement of
pillars.  Gate bus-line (1) and data bus-line (2) cross each other.
These lines compose a grid.  And coordinates are composed of this
grid.  Pillars as spacers (3) are arranged on this coordinate by the
present rule.