Electronic device

An electronic device and filter technology, applied in the electronic field, can solve the problems of noise in fingerprint recognition images, affecting the quality of fingerprint recognition images, and reducing the efficiency of fingerprint recognition of electronic devices.

Inactive Publication Date: 2020-07-10
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the electronic device is used in an outdoor environment, the infrared light in the ambient light will also pass through the display module and form an image on the fingerprint sensor, which wi

Method used

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Embodiment Construction

[0025] Embodiments of the present application 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, are only for explaining the present application, and should not be construed as limiting the present application.

[0026] In related technologies, in order to increase the screen-to-body ratio of electronic devices such as mobile phones, fingerprint sensors can be arranged under the screens of electronic devices such as mobile phones, and ambient light will pass through the screen and be sensed by the fingerprint sensor.

[0027] It is understandable that ambient light or sunlight contains more light of different wavelengths, which can pass through the screen and reach the fingerprint sensor, resulting in noise in the fingerprint recognition ...

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Abstract

The invention discloses an electronic device. The electronic device comprises a display module, a first optical filter and a fingerprint sensor. The display module comprises a liquid crystal layer anda backlight module which are laminated, the first optical filter is arranged on one side, opposite to the liquid crystal layer, of the backlight module in a stacked mode, and the first optical filteris used for reflecting visible light and transmitting light with a preset wavelength. The fingerprint sensor is arranged on the side, opposite to the backlight module, of the first optical filter andused for sensing the light with the preset wavelength to form fingerprint data. Thus, the first optical filter can reflect the visible light and transmit the light with the preset wavelength so thatthe fingerprint sensor does not sense the visible light and can sense the light with the preset wavelength, imaging quality of the fingerprint sensor according to the light with the preset wavelengthis improved, and fingerprint identification efficiency of the electronic device is increased. In addition, the reflected visible light can penetrate through the liquid crystal layer to improve the display quality of the liquid crystal layer.

Description

technical field [0001] The present application relates to the field of electronic technology, and in particular to an electronic device. Background technique [0002] The electronic device can use the supplementary light to emit infrared light, so that the infrared light is reflected by the finger and then passes through the liquid crystal display to image the fingerprint sensor located under the liquid crystal display, thereby realizing the fingerprint recognition of the electronic device under the screen. However, when the electronic device is used in an outdoor environment, the infrared light in the ambient light will also pass through the display module and form an image on the fingerprint sensor, which will affect the quality of the fingerprint recognition image, causing noise in the fingerprint recognition image and reducing the fingerprint recognition rate of the electronic device. recognition efficiency. Contents of the invention [0003] The application discloses...

Claims

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Application Information

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IPC IPC(8): G02F1/1333G02F1/13357G02F1/1335G06K9/00G06K9/20
CPCG02F1/1333G02F1/1336G02F1/133509G06V40/1324G06V10/147
Inventor 吴安平
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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