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Touch sensing method, touch sensing device, and electronic device

A touch sensing, touch panel technology, applied in the field of circuits, can solve problems such as consumption, multi-power consumption, touch sensing noise, etc.

Pending Publication Date: 2021-12-03
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for an integrated panel that integrates a display panel such as Organic Light-Emitting Diode (OLED) / Mini LED, it is difficult to realize time-sharing drive, that is, operation on the display panel, because the display drive cannot be stopped. will always contribute noise to the touch sensing
Alternatively, it is currently possible to use analog or digital filters in the touch sensing circuit to increase the sampling time to improve the accuracy of touch sensing, but this method consumes more power consumption

Method used

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  • Touch sensing method, touch sensing device, and electronic device
  • Touch sensing method, touch sensing device, and electronic device
  • Touch sensing method, touch sensing device, and electronic device

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Embodiment Construction

[0018] As used throughout this disclosure, including the claims, the term "coupled (or connected)" may refer to any means of connection, direct or indirect. For example, if it is described that a first device is coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be connected to the second device through other devices or certain A connection means indirectly connected to the second device. Terms such as "first" and "second" mentioned in the entire disclosure (including the claims) are used to name elements (elements), or to distinguish different embodiments or ranges, and are not used to limit elements. The upper or lower limit of the number is not used to limit the order of the elements. In addition, wherever possible, elements / components / steps using the same reference numerals in the drawings and the embodiments represent the same or similar parts. Elements / compone...

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Abstract

A touch sensing method, device for a touch panel, and an electronic device are provided. The method includes: determining a first number of to-sense touch sensing circuits, and determining a second number of reference touch sensing circuits, each to-sense touch sensing circuit having a corresponding reference touch sensing circuit; causing each to-sense touch sensing circuit to receive a touch excitation signal TX1, and apply TX1 to a corresponding touch sensitive cell and receive a touch sensing signal therefrom, and output a first output signal; causing each reference touch sensing circuit to receive a touch reference signal DC / TX2, and apply DC / TX2 to a corresponding touch sensitive cell and receive a reference sensing signal therefrom, wherein DC / TX2 and TX1 are different signals; and obtaining, according to respective first and second output signals, a capacitance difference of capacitances sensed by each to-sense touch sensing circuit and its corresponding reference touch sensing circuit.

Description

[0001] Cross References to Related Applications [0002] This disclosure claims priority to US Provisional Application Serial No. 63 / 030,317, filed May 27, 2020, which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to the field of circuits, and more particularly, to a touch sensing method for a touch panel, a touch sensing device, and an electronic device. Background technique [0004] For traditional touch, display or fingerprint recognition integrated panels, the various circuits used to drive touch sensing (touch), display, or fingerprint recognition cannot avoid mutual interference, which will affect the effect of touch sensing . A traditional solution can be, for example, time-division driving of various circuits for driving touch control, display or fingerprint recognition, so as to avoid mutual interference. However, for an integrated panel that integrates a display panel such as Organic Light-Emitting Di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041G06F3/044G06K9/00
CPCG06F3/04182G06F3/04166G06F3/0412G06F3/044G06F3/04164G06F3/04184G06F3/0446
Inventor 陈弘凯陈育煌詹丰林
Owner NOVATEK MICROELECTRONICS CORP