display device

Abstract

The present invention provides a display device having a built-in touch panel function capable of efficiently performing cross capacitance calibration. A liquid crystal display device includes a plurality of pixels arranged in a matrix, and includes: a first substrate; a second substrate; liquid crystal sandwiched between the first substrate and the second substrate; and a detection circuit. The second substrate has a detection electrode of a touch panel, each of the pixels has a pixel electrode and an opposite electrode, the opposite electrode is divided into a plurality of blocks, and the opposite electrodes of the divided blocks are opposite to each other. The pixels of a plurality of continuous display lines are provided in a common manner, and the opposing electrodes of the divided blocks are also used as scan electrodes of the touch panel. The detection circuit has a calibration capacitance element provided corresponding to each of the detection electrodes, one end of which is connected to each of the detection electrodes, and the other end of the calibration capacitance element is connected to the other end of each of the calibration capacitance elements during touch position detection processing. Supply the calibration voltage.

Description

[0001] This application is a divisional application of an invention patent application with an application date of December 05, 2013, an application number of 201310652179.4, and an invention title of "liquid crystal display device". technical field [0002] The present invention relates to a liquid crystal display device, and particularly relates to an effective technology applied to an in-cell liquid crystal display device incorporating a touch panel. Background technique [0003] A display device with a device (hereinafter also referred to as a touch sensor or touch panel) for inputting information by performing a touch operation (contact pressing operation, hereinafter referred to as touch) on a display screen with a user's finger or a pen, etc. is used in a PDA or a mobile phone. Mobile electronic devices such as terminals, various home appliances, automated teller machines, etc. [0004] As such a touch panel, there is known a capacitive method that detects a change in...

AI Technical Summary

Problems solved by technology

[0013] The detection of adjacent short-circuit faults between two detection electrodes adjacent to each other can be carried out by dot inspection for each intersection point of the scanning electrode and the detection electrode, but since the inspection takes time, the production efficiency is significantly reduced

In addition, the method of setting test points for the wiring connected to the detection electrode on the flexible wiring substrate to perform the open-short circuit test has disadvantages such as weak anti-noise and static electricity, or the flexible wiring substrate becomes larger.

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