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Fingerprint identification sensing module and a display panel

A sensing module and fingerprint recognition technology, which is applied in character and pattern recognition, acquisition/organization of fingerprints/palmprints, instruments, etc., can solve the difficulty of adding different pulse waves of ultrasonic waves, the difficulty of distinguishing ultrasonic echoes, and the difficulty of fingerprint analysis and recognition and other problems, to reduce the difficulty of analysis and recognition, improve the vertical resolution, and improve the recognition speed

Inactive Publication Date: 2019-03-26
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

[0005] However, since the number of pulse wave cycles of ultrasound is many, and the pulse echo will increase the number of reflected ultrasound waves, when the interval between different pulse waves is small, the superposition of different signals makes it difficult to distinguish between ultrasonic echoes, increasing In addition to the difficulty of distinguishing different pulse waves in the longitudinal direction of the ultrasonic wave, it has caused great difficulties for the later analysis and identification of fingerprints.

Method used

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  • Fingerprint identification sensing module and a display panel
  • Fingerprint identification sensing module and a display panel
  • Fingerprint identification sensing module and a display panel

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Embodiment Construction

[0028] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0029] In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is hori...

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Abstract

The invention provides a fingerprint identification sensing module which comprises a first electrode and a second electrode which are oppositely arranged, a piezoelectric material layer clamped between the first electrode and the second electrode, and a damping layer arranged on one surface of the first electrode.

Description

technical field [0001] The invention relates to the technical field of display panels, in particular to a fingerprint identification sensing module and a display panel using the fingerprint identification sensing module. Background technique [0002] Ultrasonic fingerprint recognition technology has stronger environmental adaptability because it is not disturbed by water and oil, and can be applied to more complex environments. Therefore, at present, ultrasonic fingerprint recognition has gradually received widespread attention and is increasingly used in various fields, such as improving the security of electronic products such as mobile phones, computers, tablets, and access control systems. [0003] Compared with traditional digital passwords, due to the rapidity of fingerprint unlocking, it brings a lot of convenience to people's lives. But the performance of the current ultrasonic fingerprint sensor is not satisfactory. [0004] In the existing ultrasonic fingerprint ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1306G06F2203/04103G06F3/0445G06F1/1637G06F3/0412G06F3/045G06F3/043
Inventor 周永祥
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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