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Fingerprint sensing device, fingerprint reading circuit and touch display panel

A touch display panel, sensing device technology, applied in the acquisition/organization of fingerprints/palmprints, electrical digital data processing, input/output process of data processing, etc. Quality instability and other problems, to achieve the effect of stable fingerprint image quality and improved accuracy

Pending Publication Date: 2022-05-20
NOVATEK MICROELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the quality of the captured fingerprint image data may be unstable due to the structure of the fingerprint sensor in the display, which increases the false rejection rate (FRR) and / or false acceptance rate (false acceptance rate) of fingerprint recognition. FAR)

Method used

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  • Fingerprint sensing device, fingerprint reading circuit and touch display panel
  • Fingerprint sensing device, fingerprint reading circuit and touch display panel
  • Fingerprint sensing device, fingerprint reading circuit and touch display panel

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Embodiment Construction

[0075] Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers have been used in the drawings and specification to refer to the same or like components.

[0076] Throughout the specification and appended claims of the present disclosure, certain terms are used to refer to particular components. Those skilled in the art will understand that electronic device manufacturers may use different names to refer to the same components. This article does not attempt to differentiate between those components that function the same but have different names. In the following description and claims, words such as "comprise" and "include" are open-ended terms and should be interpreted as "including but not limited to...".

[0077] As used throughout the specification of this application, including the appended claims, the term "coupling (or conn...

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PUM

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Abstract

A fingerprint sensing device includes a plurality of fingerprint sensors and a fingerprint readout circuit. The fingerprint sensor may be configured to operate in a fingerprint sensing cycle. The fingerprint readout circuitry may be coupled to a plurality of fingerprint sensors via a plurality of sense lines. The fingerprint readout circuitry may be configured to control the fingerprint sensor to operate in a fingerprint sensing cycle. The fingerprint sensing cycle includes an initialization period, an exposure period, and a readout period. A voltage of a reset node in each of the fingerprint sensors is reset to a first voltage in a reset period prior to the start of the fingerprint sensing cycle. The voltage of the reset node in each fingerprint sensor is initialized to an initial voltage in an initialization period. The initial voltage is different from the first voltage.

Description

technical field [0001] The present disclosure relates to fingerprint sensing; in particular, the present disclosure relates to a fingerprint sensing device, a fingerprint readout circuit and a touch display panel. Background technique [0002] Fingerprint recognition is a commonly used security protection technology. To reduce size reduction and increase convenience of electronic products, optical fingerprint sensor arrays are often integrated into touch display panels. However, the quality of the captured fingerprint image data may be unstable due to the structure of the fingerprint sensor in the display, which increases the false rejection rate (FRR) and / or false acceptance rate (false acceptance rate) of fingerprint recognition. FAR). Contents of the invention [0003] The present disclosure relates to a fingerprint sensing device, a fingerprint readout circuit and a touch display panel, in particular to a fingerprint sensing device embedded with an in-display fingerp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V40/13
CPCG06V40/1318G06F3/04184G06F3/0412
Inventor 林伯骐黄秋皇李荣崇
Owner NOVATEK MICROELECTRONICS CORP