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Touch panel, driving method thereof and display device

A touch panel and display area technology, which is applied to instruments, computing, electrical and digital data processing, etc., can solve problems such as inability to adjust flexibly and cannot be applied to active capacitive stylus applications, save non-display area space, and achieve narrower Border design, simple structure effect

Pending Publication Date: 2022-07-29
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the multiplexing circuit determines the scanning order of self-capacitive electrode partitions, which cannot be adjusted flexibly, and cannot be applied to the application of active capacitive pens.

Method used

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  • Touch panel, driving method thereof and display device
  • Touch panel, driving method thereof and display device
  • Touch panel, driving method thereof and display device

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

[0031] For the self-capacitance scheme, due to independent addressing, each node electrode has an independent lead. In order to avoid the number of leads increasing to x2*y2, where x2 is the number of rows of electrodes along the X direction, and y2 is along the Y direction. The number of columns of electrodes needs to pass through the multiplexing circuit in the panel, so that the node electrodes in different regions are detected in a time-sharing manner, and the number of output leads is shortened. However, the multiplexing circ...

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Abstract

The invention discloses a touch panel, a driving method of the touch panel and a display device. The touch panel comprises touch electrodes which are arranged in an array mode in the row direction and the column direction. The multiplexing circuit is electrically connected with a control end and the touch electrodes respectively; the touch multiplexing circuit comprises a row detection circuit and a column detection circuit; the row detection circuit and the column detection circuit can be switched for detection. According to the technical scheme provided by the invention, switching of different touch detection modes can be realized through the row detection circuit and the column monitoring circuit, so that self-capacitance touch detection and active pen touch detection are compatible at the same time.

Description

technical field [0001] The present invention relates to the field of display technology, and in particular, to a touch panel, a driving method thereof, and a display device. Background technique [0002] The on-cell (Y-OCTA or TPOT) touch screen of Active-matrix organic light-emitting diode (AMOLED) adopts an integrated touch screen structure, and the touch screen electrodes formed by metal grids are formed above the AMOLED encapsulation layer. [0003] In the prior art, TPOT products are generally of mutual capacitance type or self capacitance type. Specifically, for the self-capacitance scheme, due to independent addressing, each node electrode has an independent lead, so the number of leads has increased sharply to x2*y2, where x2 is the number of rows of electrodes along the X direction, and y2 is the number of electrodes along the X direction. The number of columns of electrodes in the Y direction, therefore, each node electrode cannot be connected to an independent to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/0446G06F3/0441G06F2203/04111
Inventor 卢峰
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD