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Display module and electronic device

A display module and display technology, which is applied in the field of fingerprint identification, can solve the problem of low screen-to-body ratio of mobile phones, and achieve the effects of improving identification efficiency, reducing loss, and reducing data volume

Active Publication Date: 2019-03-19
NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]At present, the ultrasonic sensors used for fingerprint recognition in mobile phones are mostly set in the form of physical buttons in the area other than the display screen on the front of the mobile phone. The installation space, the display screen will not completely occupy the front of the mobile phone, resulting in a low screen-to-body ratio of the mobile phone

Method used

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  • Display module and electronic device
  • Display module and electronic device
  • Display module and electronic device

Examples

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Embodiment Construction

[0057] 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 designate 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.

[0058] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicati...

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Abstract

The invention discloses an electronic device and a display module comprising a liquid crystal display screen and an ultrasonic sensor. In the light emitting direction, the display screen comprises a backlight module, a lower polarizer, a TFT substrate, a liquid crystal layer, a color filter, an upper polarizer and a cover plate in turn. An ultrasonic sensor is integrated in the display screen andpositioned between the upper polarizer and the cover plate. An ultrasonic sensor includes a substrate, a plurality of pixel electrodes formed on the substrate and distributed in an array, a piezoelectric element disposed on the substrate and covering the plurality of pixel electrodes, a conductive electrode disposed on the piezoelectric element, and a processing chip connected to the pixel electrodes. The piezoelectric element is used for emitting ultrasonic waves and generating an electric signal after receiving the ultrasonic waves reflected by the object to be detected, and the pixel electrode is used for receiving the electric signal. A piezoelectric element is positioned between the pixel electrode and the conductive electrode. The processing chip is used for processing an electricalsignal to form an ultrasonic image of the object to be detected. Ultrasonic sensors do not occupy the space outside the display module to increase the screen share.

Description

technical field [0001] The invention relates to the technical field of fingerprint identification, in particular to a display module and an electronic device. Background technique [0002] At present, the ultrasonic sensors used for fingerprint recognition in mobile phones are mostly set in the form of physical buttons outside the display area on the front of the mobile phone. Since the installation space must be reserved for the ultrasonic sensors, the display screen will not completely occupy the front of the mobile phone, resulting in The screen-to-body ratio of the phone is low. Contents of the invention [0003] Embodiments of the present invention provide a display module and an electronic device. [0004] The display module in the embodiment of the present invention includes a display screen and an ultrasonic sensor. The display screen is a liquid crystal display screen. Along the light emitting direction of the display screen, the display screen includes a backlig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00H04M1/02G09F9/35
CPCH04M1/026H04M1/0266G09F9/35G06V40/1306
Inventor 骆剑锋朱晃亿
Owner NANCHANG OUFEI BIOLOGICAL IDENTIFICATION TECH