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| Number | Title | Issue Date |
| 4246579 | Electrochromic display switching and holding arrangement A driving circuit for an electrochromic display cell wherein writing and erasing of electrode-segments are effected by relatively high write and erase transition potentials. After a predetermined transition period, the written and erased electrode-segment... | 01/20/1981 |
| 4212010 | Method for the operation of a display device having a bistable liquid crystal layer An improved method of operating a display device having a bistable liquid crystal layer disposed in a conductor matrix consisting of rows and columns characterized by applying the various signals as a sequence of elementary pulses and during the addressin... | 07/08/1980 |
| 4149150 | Display device A display device for displaying input analog quantities by lighting luminescent display elements, comprising an arithmetic circuit for dividing each of the input analog quantities into plural ranges and for amplifying each of the divided input quantities ... | 04/10/1979 |
| 4140944 | Method and apparatus for open drain addressing of a gas discharge display/memory panel A method and apparatus for operating a gas discharge display/memory panel having a pair of opposed electrode arrays. A pulsating potential sustainer wave form is applied to one electrode array while the other electrode array is maintained at the reference... | 02/20/1979 |
| 4109241 | Liquid crystal displays A liquid crystal display comprises a liquid crystal material layer contained between transparent slides which carry electrodes arranged in lines and columns to form an x, y matrix with x, y intersections. The liquid crystal layer at the intersections are ... | 08/22/1978 |
| 4050064 | Four-level voltage supply for liquid crystal display A liquid crystal display enabling circuitry wherein the backplate electrode of a liquid crystal display is activated by a four-level voltage while the respective segment electrodes thereof are activated by a two-level voltage. This includes at least two i... | 09/20/1977 |
| 4019178 | CMOS drive system for liquid crystal display units The present disclosure is directed toward a system for driving a plurality of liquid crystal display units each having a common electrode, a plurality of segment electrodes and a liquid crystal composition interposed between the said electrodes. First, se... | 04/19/1977 |
| 3976362 | Method of driving liquid crystal matrix display device In a method of driving with a one-line-at-a-time scanning system a liquid crystal matrix display device in which the picture elements are defined by liquid crystal cell portions formed between the scanning and the signal electrodes arranged in the form of... | 08/24/1976 |
