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Fingerprint sensing method, display driving fingerprint identification circuit and mobile device

A technology of display driving and fingerprint identification, applied in the field of fingerprint identification, can solve the problems of liquid crystal display panel structure, difficult configuration of optical fingerprint identification, etc., and achieve the effect of improving the fingerprint identification rate and eliminating image retention.

Pending Publication Date: 2022-02-25
FOCALTECH ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The liquid crystal display panel is still a mainstream display device for mobile devices. However, the structural problems of the liquid crystal display panel make it difficult to configure optical fingerprint recognition on the liquid crystal display panel.

Method used

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  • Fingerprint sensing method, display driving fingerprint identification circuit and mobile device
  • Fingerprint sensing method, display driving fingerprint identification circuit and mobile device
  • Fingerprint sensing method, display driving fingerprint identification circuit and mobile device

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Embodiment Construction

[0031] figure 1 A schematic diagram of a module integrating an optical fingerprint and a liquid crystal display panel according to a preferred embodiment of the present invention is shown. In this embodiment, the panel integrated with the optical fingerprint and the liquid crystal display panel may also be an in-cell fingerprint display panel. Please refer to figure 1 , The liquid crystal display panel is composed of two upper and lower transparent substrates (glass substrates). The upper substrate is a color filter substrate, including red, green, blue (RGB) color resistance and black matrix (black matrix). The lower substrate is mainly a thin film transistor array (TFT array), which includes a metal layer, an indium tin oxide transparent electrode (ITO), a semiconductor layer (silicon) and an insulating layer (SiOx, OC...) and the like. exist figure 1 In the embodiment, the upper substrate is marked as CF, the lower substrate is marked as TFT, and the middle of the upper...

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Abstract

The invention provides a fingerprint sensing method, a display driving fingerprint identification circuit and a mobile device. The fingerprint sensing method is suitable for an embedded fingerprint display panel with an optical reading array, and comprises the following steps: providing a driving polarity state of the embedded fingerprint display panel to a fingerprint reading circuit within a frame time; performing fingerprint image acquisition; and correcting the captured fingerprint image data according to the driving polarity state of the embedded fingerprint display panel.

Description

technical field [0001] The present invention relates to a fingerprint identification technology. More specifically, the present invention relates to a fingerprint sensing method of an embedded fingerprint display panel, a display drive fingerprint identification circuit and a mobile device using the same. Background technique [0002] Fingerprint identification technology is a kind of biometric identification technology. The fingerprint identification system is a set of pattern recognition system including fingerprint image acquisition, processing, feature extraction and comparison modules. It is often used in places that require identification of personnel, such as access control systems, attendance systems, laptops, mobile devices, internal bank processing, bank payments, etc. Optical fingerprint recognition currently used in mobile devices can be divided into button type and under-screen type. The button-type fingerprint recognition device is generally configured on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V40/13G09G3/36
CPCG09G3/36
Inventor 施博盛
Owner FOCALTECH ELECTRONICS