Fingerprint identification device and display device
A fingerprint recognition and device technology, used in character and pattern recognition, acquisition/organization of fingerprints/palmprints, instruments, etc., can solve the problems of unstable static electricity and inability to accurately identify fingerprints.
Active Publication Date: 2016-08-24
BOE TECH GRP CO LTD +1
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[0004] However, the biological environment inside the human body is constantly changing, and the external environment in which the human body is located is also changing from time to time, which will cause the static electricity carried by the skin to be unstable. For example, in the extremely dry environment in summer, the static electricity of the finger skin is almost Zero, at this time, when the finger skin is in contact with the fingerprint recognition device, the output current of the photoelectric converter is almost zero, so that the fingerprint recognition device cannot accurately identify the corresponding positions of the valley and ridge of the fingerprint
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them.
[0032] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.
[0033] A fingerprint identification device 100 provided by an embodiment of the present invention, such as Figure 1a As shown, it is a top structural view of the fingerprint identification device 100, the ...
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The invention provides a fingerprint identification device and a display device and belongs to the display technical field. With the fingerprint identification device adopted, the influence of the fluctuation of the electric field of a human body, on fingerprint identification, can be prevented, and the accuracy of fingerprint identification can be improved. The fingerprint identification device includes a test surface used for identifying the fingerprint of a user; and the test surface is provided with a grounding conductor, and / or a grounding conductor is arranged in an adjacent region contacting with the test surface, wherein the grounding conductor protrudes out or is flush with the test surface. The fingerprint identification device can be applied to a fingerprint identification process.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a fingerprint identification device and a display device. Background technique [0002] Photoelectric conversion devices, such as photodiodes, phototransistors, etc., can convert optical signals of different light intensities into electrical signals. the fingerprint information of the user. [0003] Specifically, in the fingerprint identification device, the current output by the photoelectric conversion device is related to the magnitude of the static electricity carried by the finger skin. According to the difference in the current value output by the photoelectric conversion device, the corresponding positions of the valleys and ridges of the fingerprint can be identified, that is, the measured the fingerprint information of the user. [0004] However, the biological environment inside the human body is constantly changing, and the external environment in which the human bo...
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IPC IPC(8): G06K9/00G06K9/20
CPCG06V40/12G06V40/13G06V40/1318G06V10/10G06F18/00
Inventor 刘英明董学薛海林陈小川王海生丁小梁杨盛际王鹏鹏赵卫杰杨明李昌峰刘伟
Owner BOE TECH GRP CO LTD