Browse Prior Art Database

USE OF PHOTORESIST LAYERS AS SPACERS FOR DISPLAY CELLS

IP.com Disclosure Number: IPCOM000023785D
Original Publication Date: 1979-Feb-28
Included in the Prior Art Database: 2004-Mar-31
Document File: 2 page(s) / 181K

Publishing Venue

Xerox Disclosure Journal

Abstract

In display systems utilIzing liquid4illed thin panel cells (such as those used in liquid crystal or electrophoretic display systems), providing uniform spacing between the cell walls is very important. Cell thicknesses range from 50j-mor less, typically being in the I0-l5-umrange over a relatively large area. The use of a photoresist material as a spacer can provide a number of advantages. The material is insulating, inexpensive and appropriate for automated high-volumeprocessing. The

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XEROX DISCLOSURE JOURNAL

USE OF PHOTORESIST LAYERS AS Proposed Classification SPACERS FOR DISPLAY CELLS U.S. Cl. 106/33 William R. Gardner Int. Cl. CO9K 3/10

In display systems utilIzing liquid4illed thin panel cells (such as those used in liquid

crystal or electrophoretic display systems), providing uniform spacing between the cell walls is very important. Cell thicknesses range from 50j~mor less, typically being in the I0~l5~umrange over a relatively large area. The use of a photoresist material as a spacer can provide a number of advantages. The material is insulating, inexpensive and appropriate for automated high~volumeprocessing. The

material can be made very narrow so it will not interfere with display viewing and can readily be formed into intricate patterns where desired, Some photoresist materials can also be utilized as an adhesive for bonding the cell together by, e.g., heating to tackify the surface of the photoresist and pressing the cell walls against

the photoresist while allowing the photoresist to cool. The desired uniform spacing can be provided either by the use of semisolid dry film photoresists or by uniform

application of liquid photopolymers.

Volume 4 Number I 3anuary/February 1979 17

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