IN-CELL TOUCH SCREEN, TOUCH DETECTION METHOD THEREOF AND DISPLAY DEVICE

摘要

An in-cell touch screen, a touch detection method thereof and a display device are disclosed, the in-cell touch screen comprising: an array substrate and an opposed substrate arranged opposite to each other; a self-capacitance electrode pattern (100, 200), disposed on a side of the array substrate facing the opposed substrate and/or a side of the opposed substrate facing the array substrate, including: a plurality of first self-capacitance electrodes (100), each of the first self-capacitance electrodes (100) being a strip electrode, a plurality of second self-capacitance electrodes (200), each of the second self-capacitance electrodes including a plurality of block electrodes (210) electrically connected with each other; and a touch detecting chip, configured to judge a touch position according to signal variation of the self-capacitance electrode pattern, wherein orthogonal projections of each of the first self-capacitance electrodes (100) and each of the second self-capacitance electrodes (200) on the array substrate cross to each other, and each of the first self-capacitance electrodes (100) and each of the second self-capacitance electrodes (200) are connected with the touch detecting chip through periphery wirings (300), respectively. The in-cell touch screen according to an embodiment of the present disclosure varies the self-capacitance electrode pattern, which can significantly reduce the number of the periphery wirings, and is conducive to narrow frame design; moreover, time required for touch detection can be greatly reduced in a mode of switching self capacitance and mutual capacitance.

主权项

1. An in-cell touch screen, comprising:
an array substrate and an opposed substrate, arranged opposite to each other; a self-capacitance electrode pattern, disposed on a side of the array substrate facing the opposed substrate and/or a side of the opposed substrate facing the array substrate, comprising: a plurality of first self-capacitance electrodes, each of the first self-capacitance electrodes being a strip electrode, a plurality of second self-capacitance electrodes, each of the second self-capacitance electrodes including a plurality of block electrodes electrically connected with each other; and a touch detecting chip, configured to judge a touch position according to signal variation of the self-capacitance electrode pattern, wherein orthogonal projections of each of the first self-capacitance electrodes and each of the second self-capacitance electrodes on the array substrate cross to each other, and each of the first self-capacitance electrodes and each of the second self-capacitance electrodes are connected with the touch detecting chip through periphery wiring, respectively.