Method for producing liquid crystal cells
AssigneeRobert Bosch GmbH
InventorsJoachim Glueck, Stefan Kaefer
Life of this patent
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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.
Claims16
A method for manufacturing a panel comprising the steps of:
- applying a gelatin coating onto a precursor panel, the precursor panel being divided along at least one break line;
- placing a mask onto the gelatin coating, the mask including at least one bar arranged to cover the at least one break line;
- applying a protective layer onto regions of the gelatin coating which are not covered by the at least one bar, the protective layer being composed of a conductive, transparent material;
- removing the mask;
- removing via dry etching an entire thickness of the gelatin coating from regions which are not covered by the protective layer;
- equipping the precursor panel with a predetermined break point along the at least one break line;
- and
- breaking the precursor panel along the at least one break line.
A method for manufacturing an arrangement, the arrangement including a liquid crystal cell, a first panel, a second panel and a spacer, the arrangement being divided along break lines, the method comprising the steps of:
- coating a first side of the first panel with a gelatin coating;
- placing a mask onto the gelatin coating, the mask including at least one bar arranged to cover the at least one break line;
- applying a protective layer onto regions of the gelatin coating which are not covered by the at least one bar, the protective layer composed of a conductive, transparent material;
- removing the mask;
- removing via dry etching an entire thickness of the gelatin coating from regions which are not covered by the protective layer;
- joining the first panel to the second panel and the spacer to form the arrangement so that a first break line of the first panel is arranged opposite to a second break line of the second panel, the spacer being positioned between the first and second panels;
- equipping the first and second panels with a predetermined break point along the first break line and the second break line;
- and
- braking the arrangement along the first break line and the second break line.
Dependencies are inferred from the claim text.