Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1994-04-08
1996-02-27
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 54, 359 87, G02F 11343
Patent
active
054953537
ABSTRACT:
A grey tone display and a driving method are described. The display comprises a light influencing layer, and electrode pad located adjacent to the layer at one side of the layer in order to define a pixel in the layer, an n-channel field effect transistors connected to the electrode pad at its source terminal, a p-channel field effect transistors connected to the electrode pad at its source terminal, a first control line connected to the drain terminal of the n-channel field effect transistor, a second control line connected to the drain terminal of the p-channel field effect transistor, a third control line connected to the gate terminals of the n-channel field effect transistor and the p-channel field effect transistor, and a control circuit for supplying control signals to the first, second and third control lines. By this configuration, the voltage of the electrode pad can be arbitrarily controlled by adjusting the input level at the gate terminals.
REFERENCES:
patent: 4103297 (1978-07-01), McGreivy et al.
patent: 4680580 (1987-07-01), Kawahara
patent: 4818077 (1989-04-01), Ohwada et al.
patent: 4938565 (1990-07-01), Ichikawa
patent: 4949141 (1990-08-01), Busta
patent: 5003356 (1991-03-01), Wakai et al.
patent: 5012228 (1991-04-01), Masuda et al.
Hiroki Masaaki
Mase Akira
Yamazaki Shunpei
Ferguson Jr. Gerald J.
Mai Huy
Robinson Eric J.
Semiconductor Energy Laboratory Co,. Ltd.
Sikes William L.
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