Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1994-11-03
1997-08-12
Hjerpe, Richard
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 92, G09G 336
Patent
active
056570392
ABSTRACT:
On a matrix form display panel which realizes a display device with a high image quality, the return circuits of condensers, connected to picture elements in the last row among picture elements arranged in a matrix form, are connected to a common line independently of the return circuits of the condensers in the other rows, a common electrode driving circuit is provided, and a common electrode driving voltage is applied, whereby the effective values of driving voltages applied to the picture elements in the last row are equalized to the effective values of driving voltages applied to the picture elements in the other rows. Thereby, all the picture elements forming the panel are equal in optical transmissivity, and as a result the displayed image quality is improved. Additionally, since the last scanning line can be used for displaying, the utility factor of display panel is enhanced.
REFERENCES:
patent: 5151805 (1992-09-01), Takeda et al.
Fischer, "Flache Fernseh-Bildschirme", NTZ Nachrichtentechnische Zeitschrift, vol. 33, No. 2, Feb. 1980, Berlin, DE, pp. 80-88.
Iemoto Takaaki
Mizukata Katsuya
Hjerpe Richard
Sharp Kabushiki Kaisha
Tran Vui T.
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