A fingerprint recognition device and a terminal having the fingerprint recognition device
A technology of fingerprint identification and middle position, which is applied in the direction of acquiring/arranging fingerprints/palmprints, character and pattern recognition, printing image collection, etc., which can solve the problems of weakened recognition performance and small luminous flux of fingerprint recognition devices, and increase structural stability And the overall intensity, reduce the loss of light, increase the effect of luminous flux
Active Publication Date: 2019-03-19
KUNSHAN JIAHUA ELECTRONICS
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Problems solved by technology
However, there is no light-shielding member around the light source of this type of fingerprint recognition device disclosed in the prior art, so that the luminous flux irradiated to the panel by the light source of the fingerprint recognition device is small (light leakage), and because there is no light-shield member around the light source, the external stray light and The light emitted by the light source interferes with each other so that the recognition performance of the fingerprint recognition device is greatly weakened
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[0024] The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention.
[0025] Please refer to Figure 1 to Figure 8 As shown, it is a fingerprint identification device 100 disclosed in the present invention, the fingerprint identification device 100 includes a bracket 1, a fingerprint identification chip 2 assembled under the bracket, and several light sources 3 fixed around the bracket 1, surrounded by The backing plate 4 around the light source 3 , the light guide plate 5 covering the fingerprint recognition chip 2 , and the cover plate 6 covering the light guide plate 5 . In the present invention, the backing plate 4 , the light guide plate 5 and the light source 3 are located in the same plane. The fingerprint identification device 100 is used to be electrically connected and fixed to a circuit board (not shown) on a terminal product (not shown). The t...
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A fingerprint identification device and a terminal with the fingerprint identification device, wherein the fingerprint identification device includes a bracket, a fingerprint identification chip assembled under the bracket, at least one light source fixed around the bracket, and a backing plate carried on the surface of the bracket, the The backing plate is also located at the periphery of the light source, and the backing plate is used for isolating external stray light along the side edge direction of the fingerprint identification device from the light source. By setting the backing plate to isolate the stray light from the outside world and the light source in the direction of the side edge of the fingerprint recognition device, block the adverse effects of external stray light on the fingerprint recognition device, and at the same time surround the light source in the backing plate to reduce the light emitted by the light source loss, potentially increasing the luminous flux of the light source into the light guide plate, so as to better realize the fingerprint recognition function. In addition, the arrangement of the backing plate is beneficial to the stable holding among the light guide plate, the cover plate and the bracket, and increases the structural stability and overall strength of the entire fingerprint identification device.
Description
technical field [0001] The invention relates to the technical field of fingerprint identification, in particular to a fingerprint identification device and a terminal provided with the fingerprint identification device. Background technique [0002] For the prior art, please refer to the Chinese Utility Model Patent Announcement CN204791058U, which discloses a fingerprint identification device installed on the panel of the terminal. The fingerprint recognition device includes a fingerprint recognition module, a control element and a light emitting module. The fingerprint identification module is bonded and fixed on the inner surface of the panel, and the fingerprint recognition module is electrically connected to the control element. The light-emitting module includes a base and a light source arranged on the base. The base is fixedly connected to the fingerprint identification module. The light source is electrically connected to the control element, and the control elemen...
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IPC IPC(8): G06K9/00
CPCG06V40/1318
Inventor 余志农
Owner KUNSHAN JIAHUA ELECTRONICS