Internal heater embedded in an LCD cell
AssigneesVarintelligent (BVI) Limited, Terence Leslie Johnson
InventorsKay Pui Ho, Richard C. H. Lee, Ying Leung Law, Ching Chuen Leung
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Abstract
The invention relates to an ITO heater for a liquid crystal display, typically a DSTN display which comprises an active liquid crystal cell for optical modulation, characterized by a dummy cell adapted for optical compensation comprising two substrates with liquid crystal therebetween, by a heater, the heater comprising a transparent conductive layer applied to one of the substrates, and by the dummy cell further comprising electrically conductive spacing means for simultaneously maintaining a desired cell gap and equalizing the electrical potential between the two substrates.
Claims31
A heater for a liquid crystal display (LCD), comprising:
- (i) a dummy cell,
- (ii) said dummy cell being adapted for use in the LCD,
- (iii) said dummy cell comprising two substrates with liquid crystal therebetween;
- (iv) a heater;
- (v) said heater comprising a transparent conductive layer applied to one of the substrates;
- (vi) wherein there are two conductive electrodes for the heater, one at each respective opposite side of the transparent conductive layer and secured thereto by a conductive adhesive;
- (vii) electrically conductive spacing means of said dummy cell for simultaneously maintaining a desired cell gap and equalizing the electric potential between said two substrates;
- and
- (viii) the heater being embedded in the dummy cell.
Dependencies are inferred from the claim text.