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A texture recognition module, its driving method and display device

A technology of a display device and a driving method, which is applied in character and pattern recognition, circuits, static indicators, etc., can solve the problems that the leakage current noise cannot be completely eliminated, and achieve the effect of improving the signal-to-noise ratio

Active Publication Date: 2020-02-14
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the use of the oxide switching transistor 002 to replace the polysilicon switching transistor can theoretically reduce the leakage current noise by nearly 80%, but it cannot completely eliminate the existence of the leakage current noise

Method used

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  • A texture recognition module, its driving method and display device
  • A texture recognition module, its driving method and display device
  • A texture recognition module, its driving method and display device

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Experimental program
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Embodiment Construction

[0035] The specific implementations of the texture recognition module, its driving method and display device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] The shapes and sizes of the components in the drawings do not reflect the true proportions of the texture recognition module, but are only intended to schematically illustrate the content of the present invention.

[0037] Therefore, the embodiment of the present invention provides a texture recognition module, such as Figure 2a with Figure 2b As shown, it includes: a photosensitive device array 100 composed of a plurality of photosensitive devices 101 for texture recognition, and a synchronous scanning component 200 arranged above the sensing surface of the photosensitive device array 100;

[0038] When each photosensitive device 101 in the photosensitive device array 100 performs texture recognition, the synchronous scanning c...

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Abstract

The invention discloses a pattern recognition module, a driving method thereof and a display device. A synchronous scanning component is added above the sensing surface of a photosensitive device array, and the synchronous scanning component can be divided into dynamically changing first A light-shielding area and a first light-transmitting area; wherein, the first light-transmitting area is formed at least above the photosensitive device undergoing pattern recognition and scanning, so as to ensure that the photosensitive device undergoing pattern recognition and scanning can be successfully received through the first light-transmitting area Reflected light from fingers. The first light-shielding area can shield the photosensitive devices that do not need to perform pattern recognition scanning, so that no light is irradiated to these photosensitive devices, which can prevent these photosensitive devices from generating leakage current noise and transmitting them to the connected data lines. With the scanning of the photosensitive device, the first light-shielding area and the first light-transmitting area in the synchronous scanning component change synchronously, which can improve the signal-to-noise ratio of the signal read out by the data line.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a texture recognition module, its driving method and a display device. Background technique [0002] At present, in the existing texture recognition devices such as fingerprint recognition, it is generally adopted such as figure 1 A plurality of photosensitive devices 001 (photo sensors) arranged in an array as shown realize the pattern recognition function, wherein each photosensitive device 001 is connected to the source of a one-to-one corresponding switching transistor 002, and each row of photosensitive devices 001 is Gates of one-to-one corresponding switch transistors 002 are connected to one gate line Gate, and each column of photosensitive devices 001 is connected to one data line Data through one-to-one corresponding drains of switch transistors. When performing pattern recognition, each row of gate lines is loaded with scanning signals row by row. When a row of gate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G09G3/32
CPCG09G3/3208G06V40/1318G02F1/13338G02F1/136209G02F1/136286G02F2201/123H10K59/40
Inventor 吴俊纬董学王海生刘英明丁小梁
Owner BOE TECH GRP CO LTD