Touch screen, driving method thereof and display device
First Claim
1. A touch screen comprising a color filter substrate, an array substrate and a liquid crystal layer disposed between the array substrate and the color filter substrate, a plurality of pixel units which are arranged in a matrix are formed on the array substrate, the pixel unit comprises thin film transistors, a pixel electrode and a common electrode, characterized in that the common electrodes of at least part of the plurality of the pixel units on the array substrate constitute a plurality of touch driving electrodes each comprising at least one common electrode;
- the plurality of the touch driving electrodes are grouped into a plurality of touch driving electrode groups each comprising at least one touch driving electrode; and
a plurality of touch sensing electrodes are formed on the color filter substrate;
wherein the touch driving electrode and the touch sensing electrodes are disposed to be intersected horizontally and vertically;
wherein, in a display time for one frame of picture, only one of the touch driving electrode groups is scanned for touch detection;
wherein the touch screen further comprises a driving circuit for transferring a common electrode signal to all of the touch driving electrodes during a display period in a display time for said one frame of picture, and only transferring a touch scan signal to the respective touch driving electrodes in said one of the touch driving electrode groups sequentially during a touch period in the display time for said one frame of picture, wherein touch detections fro adjacent two of the touch driving electrode groups are temporally spaced by one display period in the display time for one frame of picture.
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Accused Products
Abstract
A touch screen, a driving method thereof and a display device. Common electrodes (9) of at least part of pixel units (5) on an array substrate (1) form a plurality of touch driving electrodes (3) each comprising at least one common electrode (9); the plurality of touch driving electrodes (3) are grouped into a plurality of touch driving electrode groups (101, 102) each comprising at least one touch driving electrode (3), and a plurality of touch sensing electrodes (4) are formed on a color filter substrate (2), the touch driving electrodes (3) and the touch sensing electrodes (4) are disposed to be intersected horizontally and vertically. Further, a driving circuit (10) is further provided, during a display period in a display time for one frame of picture, a common electrode signal is transferred by the driving circuit (10) to all of the touch driving electrodes (3), while during a touch period in the display time for the one frame of picture, a touch scan signal is only transferred by the driving circuit (10) to the respective touch driving electrodes in one of the touch driving electrode groups (101, 102).
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Citations
16 Claims
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1. A touch screen comprising a color filter substrate, an array substrate and a liquid crystal layer disposed between the array substrate and the color filter substrate, a plurality of pixel units which are arranged in a matrix are formed on the array substrate, the pixel unit comprises thin film transistors, a pixel electrode and a common electrode, characterized in that the common electrodes of at least part of the plurality of the pixel units on the array substrate constitute a plurality of touch driving electrodes each comprising at least one common electrode;
- the plurality of the touch driving electrodes are grouped into a plurality of touch driving electrode groups each comprising at least one touch driving electrode; and
a plurality of touch sensing electrodes are formed on the color filter substrate;wherein the touch driving electrode and the touch sensing electrodes are disposed to be intersected horizontally and vertically; wherein, in a display time for one frame of picture, only one of the touch driving electrode groups is scanned for touch detection; wherein the touch screen further comprises a driving circuit for transferring a common electrode signal to all of the touch driving electrodes during a display period in a display time for said one frame of picture, and only transferring a touch scan signal to the respective touch driving electrodes in said one of the touch driving electrode groups sequentially during a touch period in the display time for said one frame of picture, wherein touch detections fro adjacent two of the touch driving electrode groups are temporally spaced by one display period in the display time for one frame of picture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- the plurality of the touch driving electrodes are grouped into a plurality of touch driving electrode groups each comprising at least one touch driving electrode; and
Specification