Embedded touch screen, driving method and display device thereof
An in-cell touch screen, touch-driven technology, applied in static indicators, instruments, computing, etc., can solve the problems of slow touch response speed and limited touch driving time, and achieve the effect of improving touch response speed.
Active Publication Date: 2018-01-02
BOE TECH GRP CO LTD +1
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Problems solved by technology
The driving method adopted by the existing built-in touch screen is to perform time-sharing display driving and touch driving within the display time of one frame, so that the time of touch driving is limited, thus the touch response speed is slow
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[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0034] The in-cell touch screen described in the embodiment of the present invention includes a plurality of gate lines distributed in the first direction, a plurality of touch drive electrodes distributed in the second direction, a plurality of touch drive signal lines and common electrode lines, and the touch drive electrodes include N touch driving sub-electrodes, where N is an integer greater than 1; the touch driving sub-electrodes overlap with a plurality...
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The invention provides an embedded touch screen, a driving method thereof, and a display device. The embedded touch screen includes a reset signal line, a display control module and a touch control module; at least one touch driving sub-electrode is respectively connected to a display control module and a touch control module; the display control module overlaps with the touch driving sub-electrode The set gate line connection is used to control the connection between the touch drive sub-electrode and the common electrode line when driving the gate line overlapped with the touch drive sub-electrode; the touch control module is connected to the reset signal line and used After touching all the gate lines overlapped by the driving sub-electrodes, the touch driving sub-electrodes are controlled to be connected to the touch driving signal lines by a reset signal output from the reset signal line. The present invention simultaneously displays driving and touch driving, improves the touch response speed, and can automatically switch between the touch detection stage and the display stage.
Description
technical field [0001] The invention relates to the field of display technology, in particular to an embedded touch screen, a driving method thereof, and a display device. Background technique [0002] In the existing in-cell touch screen, the touch driving electrodes and the touch sensing electrodes are all designed inside the LCD (Liquid Crystal Display, liquid crystal display) Cell (unit), and the Vcom (common electrode voltage) ITO (indium tin oxide) of the entire surface is ) layer is divided into two parts: one part is used as a common electrode, and the other part is multiplexed as a common electrode and a touch driving electrode, and the touch sensing electrode is arranged on the horizontal BM (Black Matrix, black matrix) on the color filter substrate corresponding to the Vcom ITO layer within the area. [0003] The existing in-cell touch screen includes a plurality of horizontally distributed grid lines, a plurality of vertically distributed touch drive electrodes,...
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IPC IPC(8): G06F3/041
CPCG06F3/0412G06F3/0416G09G3/20G06F3/04166G06F3/0443
Inventor 王海生董学刘英明丁小梁杨盛际任涛赵卫杰刘红娟
Owner BOE TECH GRP CO LTD