Photosensitive module, fingerprint collection system, substrate, driving method and display device

A photosensitive element, photoelectric conversion technology, applied in printing image acquisition, acquisition/organization of fingerprints/palmprints, character and pattern recognition, etc., can solve problems such as affecting fingerprint recognition efficiency and increasing acquisition time.

Pending Publication Date: 2021-03-09
BOE TECH GRP CO LTD
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Problems solved by technology

For the entire fingerprint identification process, this method will directly increase the ac

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  • Photosensitive module, fingerprint collection system, substrate, driving method and display device
  • Photosensitive module, fingerprint collection system, substrate, driving method and display device
  • Photosensitive module, fingerprint collection system, substrate, driving method and display device

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Embodiment Construction

[0082] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. Note that an embodiment may be embodied in many different forms. Those skilled in the art can easily understand the fact that the means and contents can be changed into various forms without departing from the gist and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited only to the contents described in the following embodiments. In the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined arbitrarily with each other.

[0083] In the drawings, the size of each component, the thickness of a layer, or a region is sometimes exaggerated for the sake of clarity. Therefore, one aspect of the present disclosure is not necessarily limited to...

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Abstract

The invention discloses a photosensitive module, a fingerprint collection system, a substrate, a driving method and a display device. The photosensitive module includes: a photosensitive element configured to receive an optical signal and convert the optical signal into an electrical signal through photoelectric conversion; a first control unit configured to provide a second reference signal to the first node in response to the first control signal in a first time period; a second control unit configured to output a first current signal in response to a first potential of the first node in a first time period and output a second current signal in response to a second potential of the first node in a third time period; a third control unit configured to output the first current signal in response to the first control signal in a first time period; and the fourth control unit is configured to output the second current signal in response to a second control signal provided by the second control signal end in a third time period. The photosensitive module provided by the invention can shorten the data collection time.

Description

technical field [0001] This article relates to but is not limited to the field of display technology, and in particular relates to a photosensitive module, a fingerprint collection system and a substrate, a driving method, and a display device. Background technique [0002] APS (Active Pixel Sensor, active pixel sensor) pixel circuit can be used in fingerprint recognition circuit, APS pixel circuit has higher signal amplification ability than PPS (Passive Pixel Sensor, passive pixel sensor) pixel circuit, so it has higher anti- noise capability. [0003] In a typical optical fingerprint acquisition scheme based on APS pixel circuits, in order to remove the inherent shading, it is necessary to collect a frame of the shading image (base image) in a dark environment and an integral image, and then make a difference between the two to obtain the shading Image. For the entire fingerprint identification process, this method will directly increase the acquisition time by nearly d...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1318
Inventor 王明东王佳斌李扬冰张平王雷
Owner BOE TECH GRP CO LTD
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