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Browse Prior Art Database

Glass Microballoons and Spacers in Liquid Crystal Display Panels

IP.com Disclosure Number: IPCOM000109153D
Original Publication Date: 1992-Jul-01
Included in the Prior Art Database: 2005-Mar-23
Document File: 1 page(s) / 36K

Publishing Venue

IBM

Related People

Hodgson, RT: AUTHOR [+2]

Abstract

Disclosed is a method and a structure for separators in the plates used for liquid crystal displays if the plates have pedestals of different heights. The polymer spheres used as spacers to keep the glass plates separated by a precise distance lodge on the pedestals, and the pedestal to glass plate separation is determined by the sphere diameter. If the pedestal area is about 10% of the display area, the support might not be sufficient to keep the glass plates separated by the correct distance.

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Glass Microballoons and Spacers in Liquid Crystal Display Panels

      Disclosed is a method and a structure for separators in the
plates used for liquid crystal displays if the plates have pedestals
of different heights.  The polymer spheres used as spacers to keep
the glass plates separated by a precise distance lodge on the
pedestals, and the pedestal to glass plate separation is determined
by the sphere diameter.  If the pedestal area is about 10% of the
display area, the support might not be sufficient to keep the glass
plates separated by the correct distance.

      We propose to use microballoons as spacers for liquid crystal
display devices.  These microballoons could be used on devices with
pedestals, and if the total pedestal area was small, the balloons on
the pedestals would distort or crush controllably, while the balloons
in the non-pedestal areas would determine the spacing as do the solid
polymer balls used presently.

      Glass microballoons are commercially available in sizes down to
4 microns diameter.  The sized microballoons have a few percent
larger sizes included.  These larger sizes would be crushed by the
pressures and not affect the devices.

      Disclosed anonymously.