Fingerprint recognition module and display substrate
A fingerprint identification module and fingerprint identification technology, which is applied in character and pattern recognition, acquisition/organization of fingerprints/palmprints, print image collection, etc., can solve the problem of reducing the accuracy of fingerprint identification, the difficulty of integrating display circuits and fingerprint identification circuits, and the difficulty Difficulty and other issues
Active Publication Date: 2020-02-18
BOE TECH GRP CO LTD
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Problems solved by technology
[0002] In the traditional liquid crystal display panel, it is difficult to perform fingerprint recognition when the display panel is normally displayed. The fingerprint signal collected has a particularly large impact
[0003] In addition, in the traditional fingerprint identification display panel, since the fingerprint identification data line is relatively close to the display data line or other display elements, the fingerprint identification data line is easy to be coupled with it, so it is easy to interfere with fingerprint identification and reduce the accuracy of fingerprint identification.
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[0074] The display substrate 200 includes a gate drive circuit GOA and pixel units (not labeled) arranged in multiple rows and columns, and each pixel unit includes a drive transistor T 2 and with drive transistor T 2 The sub-pixel units 220 are electrically connected. drive transistor T 2 The control electrode and gate line G 2 Electrically connected, the first pole of the driving transistor is electrically connected to the display data line 210 , and the second pole of the driving transistor is electrically connected to the sub-pixel unit 220 .
[0075] The fingerprint detection element 110 is a photodiode as an example for illustration. The photosensitive diodes are arranged corresponding to the sub-pixel units 220, and each photosensitive diode corresponds to a control transistor T 1 , the control transistor T 1 The control pole and the control line G 1 electrically connected, the control line G 1 The control signal can be controlled by the gate drive circuit GOA, w...
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The invention discloses a fingerprint recognition module and a display substrate. The fingerprint identification module includes a fingerprint detection element and a fingerprint identification data line, the fingerprint detection element can output a detection current to the fingerprint identification data line, the fingerprint identification module also includes a noise reduction unit, and the noise reduction unit is connected in series On the fingerprint identification data line, the resistance of the noise reduction unit is greater than a preset resistance. The fingerprint identification module of the present invention has a noise reduction unit arranged in series on the fingerprint identification data line, which can effectively reduce the magnitude of the detection current received by the fingerprint identification data line, thereby effectively preventing the fingerprint identification data line from interacting with other data lines. The possibility of coupling, therefore, can reduce the interference on the detection current and improve the accuracy of fingerprint recognition.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a fingerprint recognition module and a display substrate including the fingerprint recognition module. Background technique [0002] In the traditional liquid crystal display panel, it is difficult to perform fingerprint recognition when the display panel is normally displayed. The collected fingerprint signal has a particularly large impact. [0003] In addition, in the traditional fingerprint identification display panel, since the fingerprint identification data line is relatively close to the display data line or other display elements, the fingerprint identification data line is easy to be coupled with it, so it is easy to interfere with fingerprint identification and reduce the accuracy of fingerprint identification. . [0004] Therefore, how to effectively improve the accuracy of fingerprint identification has become an urgent technical problem in this field. Contents...
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IPC IPC(8): G06K9/00
CPCG06V40/13G06V40/1318
Inventor 曹学友董学吕敬王海生丁小梁刘英明韩艳玲刘伟吴俊纬王鹏鹏张平
Owner BOE TECH GRP CO LTD