Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1992-10-21
1993-06-29
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 87, G02F 113
Patent
active
052239616
ABSTRACT:
On the inside surface of one of a pair of opposed transparent substrates forming an active liquid crystal substrate there are formed first and second insulating layers. Between the insulating layers there are provided transparent pixel electrodes arranged in a matrix form and source lines corresponding to respective columns of the pixel electrodes. A short-circuit metal layer is formed on the substrate, the opposite ends of the metal layer underlying a marginal portion of each pixel electrode and the source line adjacent thereto, respectively, but separated therefrom by the first insulating layer. In these overlapping regions welding metal pads are formed on the pixel electrode and the source line. Other welding metal pads of a ductile metal are formed on the second insulating layer right above the first-mentioned welding metal pads, respectively. In the case of a white-defect pixel, laser beams are applied to the two overlapping regions to destroy the first and second insulating layers and fuse metals of three layers together, by which the pixel electrode of the defective pixel is short-circuited to the corresponding source line.
REFERENCES:
patent: 5121236 (1992-06-01), Ukai et al.
Patent Abstracts of Japan, vol. 14, No. 439 (P1084) Jul. 27, 1990 (Fujitsu Ltd.)
Hashimoto Kazuya
Otsuki Minori
Sunata Tomihisa
Ukai Yasuhiro
Hosiden Corporation
Mai Huy K.
Sikes William L.
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