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Fingerprint identification apparatus

A fingerprint identification and fingerprint technology, applied in the direction of acquiring/organizing fingerprints/palmprints, character and pattern recognition, instruments, etc., can solve problems such as the complexity of the multi-layer filter patterning process

Pending Publication Date: 2020-06-19
NOVATEK MICROELECTRONICS CORP
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  • Claims
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Problems solved by technology

However, the disadvantage of this approach is that the patterning process of the multilayer filter is more complicated

Method used

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Embodiment Construction

[0036] Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used in the drawings and description to refer to the same or like parts.

[0037] In an embodiment of the present disclosure, the optical sensor receives red light and infrared light from the finger with image information related to the fingerprint of the finger to determine the fingerprint image of the finger. Since the red light is transmitted from the area around the fingerprint imaging area of ​​the display, the transmission path of the red light from the finger to the optical sensor will be equal to or parallel to the transmission path of the infrared light in the ambient light. Therefore, the quality of the fingerprint image of the finger will not be lowered. In addition, since the infrared light in the ambient light can also be used to determine the finger...

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Abstract

A fingerprint identification apparatus for detecting a fingerprint image of a finger is provided. The fingerprint identification apparatus includes a display, an optical sensor, and a control device.The display is configured to emit light and has a fingerprint imaging area. The control device drives a region of the display at the periphery of the fingerprint imaging area to emit light to the finger when the finger touches the fingerprint imaging area, and the optical sensor is configured to receive light reflected from the finger touching the fingerprint imaging area to determine the fingerprint image of the finger.

Description

technical field [0001] The disclosure relates to a fingerprint identification device for detecting a fingerprint image of a finger, which can provide a high-quality fingerprint image and has low manufacturing cost. Background technique [0002] Currently, the optical fingerprint sensor on the market is generally configured under the display so as to be paired with the display. The display acts as a light source and emits light to the finger. Afterwards, the light is reflected to the optical fingerprint sensor to obtain an image of the fingerprint. When the ambient light is strong, the long-wavelength part of the ambient light will easily penetrate the finger and reach the optical fingerprint sensor, resulting in blurred fingerprint images. [0003] The current solution is to add multi-layer filters in front of the optical fingerprint sensor to block light with long wavelengths and allow light with short wavelengths to pass through. Since the portion of the ambient light w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1324G06V40/1318H10K59/40H10K59/60
Inventor 陈毅修
Owner NOVATEK MICROELECTRONICS CORP
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