Browse Prior Art Database

Multi-Layer Line Pattern on Liquid Crystal Display Glass Substrate

IP.com Disclosure Number: IPCOM000119159D
Original Publication Date: 1997-Dec-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Suzuki, S: AUTHOR

Abstract

Disclosed is a Liquid Crystal Display (LCD) of a multi-layer line pattern, which is fabricated using the alignment layer (usually polyimide) and/or a surrounding seal (usually epoxy resin) as an insulator layer. This method enables line pattern flexibility and ease of connection to the driving circuit.

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Multi-Layer Line Pattern on Liquid Crystal Display Glass Substrate

      Disclosed is a Liquid Crystal Display (LCD) of a multi-layer
line pattern, which is fabricated using the alignment layer (usually
polyimide) and/or a surrounding seal (usually epoxy resin) as an
insulator layer.  This method enables line pattern flexibility and
ease of connection to the driving circuit.

      The line pattern of liquid crystal display includes gate lines,
data lines, common electrode lines, etc.  These lines must be
patterned on the narrow space pitch (such as 50 um) surrounding the
pixels. The  disclosed method is shown in the Figure, which has the
insulator layer  fabricated by the alignment layer and/or the
surrounding seal.  These insulator layers can be fabricated by the
usual cell process and require  no extra process step.  The Figure
shows the data line (1), gate line (2), and insulator layer (3), for
example.  This multi-layer patterning  enables a line connection by
contact hole (4) through insulator layer,  or a cross line pattern
(5), or a zigzag pattern (6), as shown in the Figure.

      The contact hole can be fabricated by an alignment layer
process or a seal creation step without an additional process.  The
alignment layer and seal can be overlapped to improve breakdown
voltage.  The passivation layer (such as SiNx) under above insulator
layer is also useful for this method.  This method includes
multi-layers, such as line pattern/ alignment-l...