JPS6397976U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 shows a liquid crystal matrix panel. Figure 2 is a diagram of driving waveforms for the liquid crystal. FIG. 3 is a block diagram explaining a conventional liquid crystal television. 4 and 5 are timing charts explaining FIG. 3. FIG. 6 and 7 are timing diagrams explaining the present invention. FIG. 8 is a memory state diagram of the shift register according to the present invention.

Amendment December 24, 1982 The name of the invention is amended as follows. Title of the invention: Driving circuit for a liquid crystal display device The scope of the claims for utility model registration is amended as follows.

[Claims for Utility Model Registration] Select every n scanning lines (n≧3) and only the scanning lines adjacent to the n scanning lines from the television video signal, and sample the video signal of the scanning lines. a first memory means for holding video signals of odd-numbered scanning lines among the scanning lines selected by the video signal sampling means; a video signal of even-numbered scanning lines among the selected scanning lines; a second memory means for holding a signal; a transfer means for transferring the video signal held in the first memory means and the second memory means every 2n times in one horizontal scanning period; and transfer by the transfer means. a third memory means configured to hold the video signal from the first memory means for a period of 2n times the one horizontal scanning period and supply it to a first drive circuit that drives the liquid crystal; a second memory means for retaining the video signal from the second memory means for a period 2n times the one horizontal scanning period and driving the liquid crystal;
a fourth memory means supplied to the driving circuit, wherein half of the total sampled images are sampled during the selected n scanning line periods;
A driving circuit for a liquid crystal display device, wherein the remaining half of all sampled images is sampled during a scanning line period adjacent to the n scanning lines.

Claims (1)

[Scope of utility model registration request] By controlling the voltage applied to the signal electrodes of a liquid crystal matrix that has signal electrodes and scanning electrodes,
In a liquid crystal display device that displays an image with halftones, an image signal in two or more consecutive data scanning signals is AD converted to a modulation signal for halftone display within one scanning line of the liquid crystal matrix. An AD conversion device for a liquid crystal display device, characterized in that: