Touch screen and driving method thereof and display device

A technology of touch screen and touch drive electrodes, which is applied in the fields of instruments, computing, electrical digital data processing, etc. It can solve the problems of increasing the difficulty of pixel unit design, compressing the charging time of pixel units, and increasing the width of the overall module frame, etc.

Active Publication Date: 2013-07-10
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since it is necessary to add touch driving electrodes and touch sensing electrodes on the display screen, the border width of the overall module will be increased, and the display time of one frame includes the touch detection period and the pixel unit charging display period, which seriously compresses the display time. The charging time of the pixel unit increases the design difficulty of the pixel unit

Method used

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  • Touch screen and driving method thereof and display device
  • Touch screen and driving method thereof and display device
  • Touch screen and driving method thereof and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] figure 1 Shown is a schematic longitudinal sectional view of the touch screen in the embodiment of the present invention; figure 2 Shown is a schematic diagram of the working principle of the touch screen in the embodiment of the present invention. combine figure 1 and figure 2 As shown, the touch screen in this embodiment specifically includes: an array substrate 1 and a color filter substrate 2 , and a liquid crystal layer 6 located between the array substrate 1 and the color filter substrate 2 . The array substrate 1 includes a base substrate 17 and a plurality of pixel units arranged in a matrix formed on the base substrate 17, the pixel units include a thin film transistor, a pixel electrode 5 and a common electrode 9, between the pixel electrode 5 and the common electrode 9 A passivation layer 8 is formed between them. Wherein, the common electrode 9 can be located above the pixel electrode 5, and also can be located below the pixel electrode 5, such as fig...

Embodiment 2

[0056] Based on the same inventive concept, this embodiment provides a display device, which includes the touch screen in Embodiment 1. Since only part of the touch detection points are touched within the display time of one frame, the display time of one frame is improved. The charging time of the pixel unit reduces the design difficulty of the pixel unit and ensures the display quality of the display device.

Embodiment 3

[0058] Correspondingly, this embodiment provides a touch screen driving method in Embodiment 1, which includes the step of dividing the display time of one frame of the touch screen into a display time period and a touch time period, and further includes:

[0059] Step S1, divide the multiple touch driving electrodes into multiple touch driving electrode groups according to certain rules;

[0060] Preferably, the plurality of touch driving electrodes are divided into two touch driving electrode groups, so as to complete the touch detection of all touch detection points within the display time of two consecutive frames of images, and ensure the accuracy of touch detection. Specifically, the touch driving electrodes can be wired along the row direction of the pixel unit, and then all odd-numbered rows of touch-driving electrodes are used as the first touch-driving electrode group, and all even-numbered rows of touch-driving electrodes are used as the second touch-driving electrod...

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Abstract

The invention belongs to the technical field of display and discloses a touch screen and a driving method thereof and a display device. A plurality of public electrodes on an array substrate form a plurality of touch driving electrodes, every touch driving electrode comprises one or a plurality of public electrodes, the plurality of touch driving electrodes form a plurality of touch driving electrode groups, every touch driving electrode group comprises one or a plurality of touch driving electrodes, a color film substrate is provided with a plurality of touch induction electrodes, and the touch driving electrodes and the touch induction electrodes are crossed in wiring. A driving circuit is arranged, public electrode signals are transmitted to all the touch driving electrodes at a display time period within display time of a picture frame, and touch scanning signals are transmitted to one touch driving electrode group merely. Due to the fact that touch detection is performed on part of touch detection points within the display time of the picture frame, charging time of a pixel unit is increased, and design difficulty of the pixel unit is lowered.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a touch screen, a driving method thereof, and a display device. Background technique [0002] In touch screen technology, compared with resistive touch screens, capacitive touch screens have the advantages of long life, high light transmittance, and support for multi-touch. Moreover, the capacitive touch screen also has a good suppression effect on noise and ground parasitic capacitance. Therefore, capacitive touch screens have become one of the hot spots in touch screen manufacturing today. The embedded capacitive touch screen can reduce the thickness of the module by embedding the touch electrodes of the touch screen inside the display screen, and can greatly reduce the manufacturing cost of the touch screen, which is favored by major panel manufacturers. [0003] The touch detection principle of the capacitive touch screen is: by forming the touch driving electrodes and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/0412G06F2203/04112G06F3/04166G06F3/0443
Inventor 王孝林
Owner BOE TECH GRP CO LTD
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