Drive circuit for display

Abstract

The driving circuit of the present invention is used to drive a display panel having the following parts: a plurality of signal lines arranged in a first direction; a plurality of scanning lines arranged in a second direction crossing the first direction; A plurality of pixels corresponding to the intersection of the signal line and the above-mentioned multiple scanning lines; the first terminal of each pixel is coupled to the above-mentioned signal line, its second terminal is coupled to the above-mentioned scanning line, and its third terminal is coupled to the above-mentioned pixel electrode The switching element includes: a converter that converts the input display data into a grayscale voltage and outputs the grayscale voltage to the signal line; a first electrical switch that is provided between the signal line and the converter. Coupled, and the switch is provided in the switch circuit of the second electrical coupling between the above-mentioned plurality of signal lines, and one scan period for scanning the above-mentioned scanning lines includes: the above-mentioned switching circuit closes the above-mentioned first electrical coupling and opens the above-mentioned second electrical coupling. A first period of coupling; a second period in which the switch circuit opens the first electrical coupling and closes the second electrical coupling.

Description

technical field [0001] The present invention relates to a display drive circuit that generates grayscale voltages corresponding to display data and outputs them to active matrix display panels, such as liquid crystal display panels, and in particular relates to a reduction in the frame cycle AC drive that can be driven with low power. A display drive circuit that degrades image quality due to vertical smudges. Background technique [0002] In the following description, a liquid crystal display panel, which is currently considered to be the most popular among display panels, will be described as a representative example of the display panel. [0003] In liquid crystal panels for mobile devices such as mobile phones in the past, there is a problem that power consumption needs to be reduced. Therefore, a liquid crystal driving method that uses the AC frequency of the voltage applied to the liquid crystal panel as the frame period is used to achieve low power consumption. Howev...

AI Technical Summary

Problems solved by technology

However, if the AC cycle is set to the line cycle, the AC frequency of the applied voltage increases, and the charging and discharging current of the liquid crystal panel increases.

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