Fingerprint recognition device, driving method, manufacturing method and display device

Abstract

The invention discloses a fingerprint identification device, a driving method, a manufacturing method and a display device. The fingerprint identification device includes: a cover plate and a first electrode, a light-emitting layer, a second electrode and a photosensor located above the cover plate and arranged in sequence; the first electrode is used for when the finger corresponds to the first electrode When static electricity is generated at a specific position, the first voltage is applied; the second electrode is used to apply the second voltage; the light-emitting layer is used to emit light under the action of the voltage difference between the first voltage and the second voltage; the light The sensor is used to convert the light emitted by the light-emitting layer into an electric current, and the electric current is used to identify a fingerprint at a specific position of the finger. The present invention realizes the fingerprint recognition function by arranging the first electrode, the second electrode, the luminescent layer and the light sensor on the cover plate, without opening holes on the cover plate, thereby reducing the manufacturing cost.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a fingerprint recognition device, a driving method, a manufacturing method and a display device. Background technique [0002] In the late 1990s, the Hong Kong Polytechnic University and Tsinghua University pioneered the research field of fingerprint recognition technology. Fingerprint recognition has the advantages of high precision, fast speed, low price, and high user acceptance. With full attention, many universities and scientific research institutions at home and abroad have joined in this research field and achieved a series of results. [0003] At present, the application of fingerprint identification technology is more and more extensive. In the prior art, most of the fingerprint identification functions are formed based on self-capacitance or mutual-capacity. [0004] Since the distance between the finger and the sensor cannot be too far in the solution in the prior ...

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Problems solved by technology

[0004] Since the distance between the finger and the sensor in the solution in the prior art cannot be too far, glass with a certain thickness can be arranged between the finger and the sensor, but holes need to be made on the glass to place the sensor, thereby increasing the manufacturing cost

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