Display device

Abstract

The present invention provides a display device, which has an embedded touch panel function and is capable of executing calibration of cross capacitance efficiently. The liquid crystal display device with a plurality of pixels arranged in a matrix includes a first substrate, a second substrate, a liquid crystal interposed between the first and the second substrates, and a detection circuit. The second substrate includes a detection electrode for a touch panel. The respective pixels have pixel electrodes and counter electrodes. The counter electrode divided into a plurality of blocks is provided common to the respective pixels on a plurality of consecutive display lines. The counter electrode divided into blocks serves as the scanning electrode for the touch panel. The detection circuit includes a calibration capacity element provided for each of the detection electrodes, having one end connected to the detection electrode, and supplies a calibration voltage to the other end of the calibration capacity element in a touched position detection process.

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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