Browse Prior Art Database

Organic Resin Structure on Thin Film Transistor Substrate for Liquid Crystal Alignment

IP.com Disclosure Number: IPCOM000119171D
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Suzuki, S: AUTHOR

Abstract

Disclosed is an organic resin structure on a Thin Film Transistor (TFT) substrate, whose purpose is Black Matrix (BM) or cell gap control. In the pixel structure of an organic resin wall (or column) and a TFT array pattern, fabricating the groove (or slot) on an organic resin structure is disclosed. This structure is indispensable to leveling the alignment layer coating around the pixel and improving Liquid Crystal (LC) alignment control.

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Organic Resin Structure on Thin Film Transistor Substrate for Liquid
Crystal Alignment

      Disclosed is an organic resin structure on a Thin Film
Transistor (TFT) substrate, whose purpose is Black Matrix (BM) or
cell gap control.  In the pixel structure of an organic resin wall
(or column)  and a TFT array pattern, fabricating the groove (or
slot) on an organic  resin structure is disclosed.  This structure is
indispensable to leveling the alignment layer coating around the
pixel and improving Liquid Crystal (LC) alignment control.

      The Figure shows an example of an organic BM structure with
several groove (slot) variations.  The TFT array is configured of
data line (1), TFT (3), pixel electrode (4), black matrix of organic
resin (5), and the groove (or slot) (6).  This groove on the organic
resin structure (7) enables the leveling of the alignment layer
(usually polyimide), polyimide thickness uniformity on the pixel
electrode, and  LC alignment improvement.  This groove structure is
also effective in cleaning the TFT substrate without a flowing smear.
When an organic-resin-black-matrix groove is fabricated on a data
line or gate  line, light shield effect is stored.  This groove is
effective when the  organic resin structure is used for cell gap
control.  The organic resin  structure has the thickness of one
micron through ten microns with a variation of usage and can have
different thickness in the same plane to  control the cell gap.  The
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