Browse Prior Art Database

DYNAMICALLY ADJUSTABLE ELECTRODED CAVITY

IP.com Disclosure Number: IPCOM000023253D
Original Publication Date: 1977-Apr-30
Included in the Prior Art Database: 2004-Mar-29
Document File: 2 page(s) / 187K

Publishing Venue

Xerox Disclosure Journal

Abstract

In electro-optic cells employing liquid crystalline layers, the uniformity of observed electro-optic effect depends upon the uniformity of coplanarity of the electroded surfaces or cavity in the cell. A novel technique for insuring uniform cavity spacing is pro-posed. It is proposed to use piezoelectric rods as spacers between electroded surfaces and to adjust the effective length of each rod by application of electrical bias to each rod. By adjusting the bias applied to each rod, the effective length of each rod can be adjusted to accurately control coplanarity of the electroded surfaces and therefore achieve very precise and uniform spacing between the electroded surfaces. Thus, the liquid crystalline layer occupying this uniform spacing is uniform in thickness and the observed electro-optic effects appear to be uniform over the entire surface area of the liquid crystalline layer.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

DYNAMICALLY ADJUSTABLE ELECTRODED Proposed Classification
CAVITY U.S. Cl. 350/16OLC
Robert L. Holman mt. Cl. G02b 5/23
Joel M. Pollack

In electro-optic cells employing liquid crystalline layers,
the uniformity of observed electro-optic effect depends upon
the uniformity of coplanarity of the electroded surfaces or
cavity in the cell.

A novel technique for insuring uniform cavity spacing is pro-
posed. It is proposed to use piezoelectric rods as spacers
between electroded surfaces and to adjust the effective length
of each rod by application of electrical bias to each rod. By
adjusting the bias applied to each rod, the effective length
of each rod can be adjusted to accurately control coplanarity
of the electroded surfaces and therefore achieve very precise
and uniform spacing between the electroded surfaces. Thus,
the liquid crystalline layer occupying this uniform spacing is
uniform in thickness and the observed electro-optic effects
appear to be uniform over the entire surface area of the
liquid crystalline layer.

Volume 2 Number 2 March/April 1977 63

[This page contains 1 picture or other non-text object]

Page 2 of 2

* - ______ LLMt!! _..L..

               XEROX DISCLOSURE JOURNAL
64 Volume 2 Number 2 March/April 1977

[This page contains 1 picture or other non-text object]