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An in-cell touch panel

A touch panel, built-in technology, applied in the direction of instruments, calculations, electrical digital data processing, etc., can solve the problem of occupying additional integrated circuits, etc., to achieve the effect of extending the scanning cycle and shortening the scanning waiting time

Active Publication Date: 2017-03-29
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking a 4.0-inch in-cell touch display device with three virtual keys in the virtual key area as an example, the touch structure of the three virtual keys in the virtual key area consists of three driving electrodes and one sensing electrode, which will take up additional Three driving electrodes and one sensing electrode of the circuit

Method used

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  • An in-cell touch panel
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  • An in-cell touch panel

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0019] figure 2 It is a schematic diagram of the in-cell touch display device provided by the first embodiment of the present invention. refer to figure 2 , a virtual key area 101 is set at a position outside the display area 102 of the embedded touch display device, and a touchable virtual key 101a with a specific function is set in the virtual key area 101, and the virtual key 101a is connected to a touch structure to realize the function of touch input. Specifically, in this embodiment, the touch structure of the virtual key area 101 is set on the same plane as the touch unit of the display area 102. In other implementations, the touch structure of the virtual key area 101 can also be set Other surfaces of the display device are not on the same plane as the touch unit in the display area 102 . The touch control structure of the virtual key 101a and the touch control unit of the display area 102 are set on the same layer. In other embodiments, the touch structure of the...

no. 2 example

[0029] Please refer to Figure 6 , Figure 6 It is a driving scan sequence diagram of the in-cell touch display device according to the second embodiment of the present invention.

[0030] The second embodiment uses an in-cell touch display device with the same structure as the first embodiment. Compared with the first embodiment, the scanning method of the second embodiment provided by the present invention is different. A scanning cycle is composed of a The trigger signal STV starts and ends before the next trigger signal STV, including the driving scanning period T1 ″ of the pixel unit in the display area and the driving scanning period T3 ″ of the touch unit in the display area. At the beginning of the scanning of the first frame, the trigger signal STV triggers the pixel units in the display area to perform driving scanning. When the pixel unit driving scanning period T1" in the display area ends, the driving scanning of the pixel units in the display area ends, and the ...

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Abstract

The invention provides an embedded type touch panel which comprises a display area and a virtual button area. The display area comprises pixel units and touch units corresponding to the pixel units. The display area and the virtual button area display images through drive scanning, and the drive scanning of the display area and the drive scanning of the virtual button area are overlapped in time. According to the embedded type touch panel, the drive scanning of the display area and the drive scanning of the virtual button area are designed to be overlapped in time, so that the scanning cycle of the pixel units of the display area is prolonged without influencing display.

Description

technical field [0001] The invention relates to the technical field of touch display, in particular to a design of a touch panel with virtual keys. Background technique [0002] At present, touch panel technology is widely used in display devices such as liquid crystal displays to produce touch display devices that can display images and input functions at the same time, such as resistive, capacitive, and wave (such as sound waves, infrared rays, and thunderstorms). shooting) and other touch panels. Capacitive touch panels are divided into: external capacitive touch panels and embedded capacitive touch panels. Among them, the external capacitive touch In the touch panel, the structure of the touch panel is arranged inside the liquid crystal display. Due to the advantages of multi-touch, high transmittance and long service life, capacitive touch panels are increasingly replacing traditional resistive touch panels. They are used in mobile phones, players, e-books, netbooks, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/0488
Inventor 周星耀马骏马从华温琳
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD