Claims
- 1. The method of operating a liquid crystal device of the type comprising a pair of spaced apart electrodes, a liquid crystal between said electrodes, and a semiconductor material disposed between and in contact with one of said electrodes and said liquid crystal material, the contact between said semiconductor material and said one of said electrodes being ohmic and the contact between said semiconductor material and said liquid crystal material being non-ohmic, The resistance associated with said semiconductor material being greater or less than that of said liquid crystal material depending upon the polarity of voltage applied between said electrodes,
- said method comprising selectively activating and deactivating said liquid crystal material by selectively applying one or the opposite polarity voltages between said electrodes.
- 2. The method of operating a liquid crystal device as in claim 1 including using a liquid crystal device wherein the resistance associated with said semiconductor material varies with the polarity of voltage applied between said electrodes by a factor of about 10.sup.2 or greater.
- 3. The method as in claim 2 wherein said semiconductor material comprises zinc oxide.
Parent Case Info
This is a continuation of application Ser. No. 430,595, filed Jan. 3, 1975, now abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3499112 |
Heilmeier |
Mar 1970 |
|
3663086 |
Assouline et al. |
May 1972 |
|
3730607 |
Grabmaier et al. |
May 1973 |
|
3809456 |
Goldmacher et al. |
May 1974 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
430595 |
Jan 1975 |
|