Apparatus and method for providing a gray scale capability in a

Details Apparatus and method for providing a gray scale capability in a Apparatus and method for providing a gray scale capability in a

1987-11-13

1989-06-20

Miller, Stanley D.

350339R, G02F 113

Patent

active

048404608

ABSTRACT:
A liquid crystal display is described that includes gray scale capability. Each pixel of the display is subdivided into a plurality of subpixels. Each subpixel includes an effective capacitor, with the liquid crystal material contained between the effective capacitor plates, and includes a control capacitor coupled in series with the effective capacitor. By controlling the capacitance of the control capacitors of the subpixels, selected subpixels can be activated as a function of the voltage applied across the series capacitors. By controlling the number of subpixels that are activated by the applied voltage, a gray scale capability can be provided for a liquid crystal display.

REFERENCES:
patent: 3647958 (1972-03-01), Sobel
patent: 4712877 (1987-12-01), Okada et al.

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