Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1990-10-03
1991-08-27
Miller, Stanley D.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 79, 359 89, 357 237, G02F 1133
Patent
active
050429167
ABSTRACT:
One end portion of each pixel electrode is extended under a gate insulating film underlying the neighboring gate bus and defines an additional capacitance region. The extended portion of the pixel electrode is divided into a plurality of comb-tooth-like electrodes, each defining divided additional capacitors. One of the comb-tooth-like electrodes is separated by a gap from the pixel electrode, and first and second electrodes for laser welding use are formed on the comb-tooth-like electrode and the pixel electrode facing each other across the gap. The first and second electrodes form series-connected first and second capacitances for laser welding use between them and a third electrode for laser welding use formed above them with a gate insulating film interposed therebetween. When one of the divided additional capacitors connected to the pixel electrode is bad in insulation, the defective one of the divided additional capacitors is cut off and the first and second capacitances are caused to short by welding, whereby the total additional capacitance can be held substantially constant.
REFERENCES:
patent: 4761058 (1988-08-01), Okubo et al.
patent: 4762398 (1988-08-01), Yasui et al.
patent: 4983022 (1991-01-01), Shannon
Sunata Tomihisa
Ukai Yasuhiro
Yasui Masaru
Yukawa Teizo
Duong Tai V.
Hosiden Corporation
Miller Stanley D.
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