Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-05-13
2000-06-27
Liang, Regina
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 66, G09G 328
Patent
active
060812451
ABSTRACT:
A plasma-addressed liquid crystal display device owns a flat panel structure such that a liquid crystal cell and a plasma cell are stacked to each other via an intermediate glass thin plate. The liquid crystal cell is equipped with a column-shaped data electrode and a liquid crystal layer. The plasma cell is equipped with a discharge channel constituted by one pair of an anode electrode and a cathode electrode. A scanning circuit is connected to the plasma cell to apply strobe pulses to the respective discharge channels in a row scan operation. A drive circuit is connected to the liquid crystal cell to apply a drive voltage to the data electrode D in synchronism with this row scan operation. The drive circuit includes a control means for controlling an application of a drive voltage in correspondence with the application timing of the strobe pulse, thereby suppressing an occurrence of unfavorable localized discharge. This control means is arranged by a level shifter to lower the drive voltage in a time period during the strobe pulse is applied.
REFERENCES:
patent: 4896149 (1990-01-01), Buzak et al.
patent: 5077553 (1991-12-01), Buzak
patent: 5313223 (1994-05-01), Buzak et al.
patent: 5349454 (1994-09-01), Iwama
patent: 5361080 (1994-11-01), Kwon
Liang Regina
Sony Corporation
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