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Touch panel controller and semiconductor device

A touch panel and controller technology, applied in instruments, static indicators, electrical digital data processing, etc., can solve problems such as display distortion, eliminate interference, avoid the overlapping of display scanning positions and detection scanning positions, and improve touch detection accuracy Effect

Active Publication Date: 2018-05-25
OMNIVISION TDDI ONTARIO LLP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the detection frame period of the touch sensor is shorter than the display frame period of the liquid crystal panel, only by setting a certain phase difference, there must be a timing when the touch scan exceeds the rewriting of the liquid crystal element, so there will be interference between the touch scan and the display of the liquid crystal panel to make the display Distortion etc.

Method used

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  • Touch panel controller and semiconductor device
  • Touch panel controller and semiconductor device
  • Touch panel controller and semiconductor device

Examples

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Embodiment Construction

[0054] 1. Outline of Embodiment

[0055] First, an outline of the embodiments disclosed in the present application will be described. In the summary description of the embodiments, the reference numerals in the drawings referred to in parentheses are merely examples of the concepts included in the constituent elements in parentheses.

[0056] [1]

[0057]The touch panel controller 6 controls the touch panel 3 whose detection surface overlaps the display surface of the display 2, scans and drives a plurality of detection scanning electrodes of the touch panel to perform touch detection, and the display 2 and a plurality of display Display is performed synchronously with the scan driving of the scan electrodes. The touch panel controller 6 has a control unit 14 that sets the detection frame period of the detection surface to a period that is 1 / n (n is a positive integer) times the display frame period for the display surface, and in each detection frame Period, for the arran...

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PUM

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Abstract

The touch panel controller activates a touch panel having a detection plane superposed on a display plane of a display device, and performs a touch detection. The touch panel controller uses a cycle of 1 / n (n is a positive integer) of a display frame cycle on the display plane as the detection frame cycle of the detection plane. The touch panel controller decides an order of driving the detection-scan electrodes in each detection frame cycle according to predetermined phase-delay and phase-advance positions with respect to a display-scan electrode drive position of the display device so as to correspond to an order of the detection-scan electrode array of the touch panel. The touch panel controller makes possible to avoid the coincidence of display-scan and touch-detection positions without thinning touch detections even with the detection frame cycle of a touch sensor shorter than the display frame cycle of a liquid crystal panel.

Description

technical field [0001] The present invention relates to the technology of controlling the touch detection position of the touch panel to the display scanning position of the display, especially to a touch panel controller and a semiconductor device formed by chip-packing the touch panel controller, for example, to a Effective technology for touch panel information terminal devices and the like. Background technique [0002] A touch panel integrated with a liquid crystal panel is mounted on the surface of a mobile information terminal device such as a tablet computer or a smartphone, and it is possible to determine the The operation. With regard to a mutual capacitance type touch panel corresponding to multi-touch, many detection capacitors are formed in a matrix at the crossing positions of driving electrodes and detection electrodes arranged to cross. The potential changes appearing on the detection electrodes are integrated to form a detection signal. When there is a fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G09G3/36
CPCG06F3/04166G06F3/044
Inventor 内田裕介石井达也黑岩刚史赤井亮仁梶原久芳大门一夫
Owner OMNIVISION TDDI ONTARIO LLP
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