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Fingerprint identification device and method, and display device
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A fingerprint recognition and device technology, applied in measurement devices, electric solid state devices, semiconductor devices, etc., can solve the problems of increasing production costs, reducing the screen ratio of mechanical keys, and limited touchpad area.
Active Publication Date: 2017-09-01
BOE TECH GRP CO LTD
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Problems solved by technology
[0003] However, the optical fingerprint recognition of the current display terminal is mostly integrated on the touchpad in the non-display area (for example, on the home button). The area of the touchpad in the non-display area is limited, and the existence of mechanical keys will reduce the screen ratio. increase production cost
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Embodiment 1
[0029] Such as figure 1 As shown, the embodiment of the present invention provides a fingerprint identification device, including: a pressure detection unit 10, a light emitting unit 20, a photosensitive unit 30 and a fingerprint analysis unit 40;
[0030] The pressure detection unit 10 is used to detect the strength of the finger pressing the display screen, and send a first control signal to the light emitting unit according to the change of the strength;
[0031] The light emitting unit 20 is configured to emit a light signal whose intensity varies with the first control signal under the control of the first control signal;
[0032] The photosensitive unit 30 is used to receive the light signal reflected by the finger, convert the light signal into an electrical signal and output it to the fingerprint analysis module;
[0033] The fingerprint analysis unit 40 is configured to analyze fingerprint information according to the received electrical signal;
[0034] The fingerp...
Embodiment 2
[0048] An embodiment of the present invention provides a display device, including the above-mentioned fingerprint identification device.
Embodiment 3
[0050] Such as Figure 4 As shown, the embodiment of the present invention provides a fingerprint recognition method, including:
[0051] Step S110, the pressure detection unit detects the strength of the finger pressing the display screen, and sends a first control signal to the light emitting unit according to the change of the strength;
[0052] Step S120, under the control of the first control signal, the light emitting unit emits a light signal whose intensity varies with the first control signal;
[0053] Step S130, the photosensitive unit receives the light signal reflected by the finger, converts the light signal into an electrical signal and outputs it to the fingerprint analysis module;
[0054] Step S140, the fingerprint analysis unit analyzes the fingerprint information according to the received electrical signal;
[0055] The method can also include the following features:
[0056] In one embodiment, the method also includes:
[0057] The fingerprint analysis ...
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Abstract
The inventing discloses a fingerprintidentification device and method, and a display device. The fingerprintidentification device comprises a pressure detection unit, a light-emitting unit, a light sensing unit and a fingerprint analysis unit. The pressure detection unit is used for detecting the intensity of pressing a display screen by a finger and transmitting a first control signal to the light-emitting unit according to the change in the intensity; the light-emitting unit is used for emitting an optical signal having the intensity changing with the first control signal under the control of the first control signal; the light sensing unit is used for receiving the optical signal reflected by the finger, converting the optical signal into an electrical signal, and outputting the electrical signal to the fingerprint analysis module; and the fingerprint analysis unit is used for carrying out an analysis based on the received electrical signal to obtain fingerprint information. Therefore, the fingerprint identification function is realized in a display region of a display screen and fingerprint identification reliability is improved.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a fingerprint identification device, method and display device. Background technique [0002] In recent years, with the rapid development of technology, mobile products with biometric functions have gradually entered people's life and work. Fingerprint technology has attracted much attention due to its unique identity. [0003] However, the optical fingerprint recognition of the current display terminal is mostly integrated on the touchpad in the non-display area (for example, on the home button). The area of the touchpad in the non-display area is limited, and the existence of mechanical keys will reduce the screen ratio. Increase production costs. If the fingerprint recognition function is integrated in the display area, a new fingerprint recognition scheme is required. Contents of the invention [0004] The present application provides a fingerprint identification devic...
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