Patent · US Expired

Method for producing liquid crystal cells

US6143189A · kind A · utility

4Cited by

8References

16Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Joachim Glueck · Renningen, DE
Stefan Kaefer · Aschheim, DE

Key dates

Filing date	Aug 27, 1999
Grant date	Nov 7, 2000
Priority date	—
Expiry date	Aug 27, 2019

Classification

Technology area (CPC G)Physics
CPC primaryG02F1/133351
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A method for manufacturing a gelatin-coated glass panel is described. In this, gelatin is first applied onto a glass panel, then a protective layer is sputtered on through a mask placed onto the gelatin layer. After removal of the mask, the gelatin can be removed, with the aid of a dry etching method, from the regions in which it is not equipped with a protective layer. The glass panel can then easily be divided by scoring and breaking. The method makes it possible to produce, on a large-scale production basis, liquid crystal displays which have either a color filter or a black matrix made of photoemulsion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.