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Fingerprint recognition apparatus

A technology of fingerprint recognition and equipment, which is applied in character and pattern recognition, acquisition/sorting of fingerprints/palmprints, instruments, etc., and can solve problems such as low image quality and reduced image contrast

Pending Publication Date: 2021-04-13
NOVATEK MICROELECTRONICS CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Therefore, the contrast of the obtained image is reduced so that the obtained image does not have the expected quality

Method used

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  • Fingerprint recognition apparatus
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Embodiment Construction

[0070]The drawings are included to provide a further understanding of the invention, and figures are also incorporated herein by reference. The drawings show the exemplary embodiments of the present invention, and is used to explain the principles of the present invention.

[0071]figure 1 It is a schematic plan view of a display panel of a fingerprint recognition apparatus according to an embodiment of the present invention.Figure 2A withFigure 2b Yesfigure 1 A schematic top view of the pixel of the display panel of the fingerprint identification device.Figure 3A Is an embodiment of the present inventionFigure 2A to Figure 2B A cross-sectional view of pixels along the A-A 'direction.Figure 3B Is an embodiment of the present inventionFigure 2A to Figure 2B A cross-sectional view of pixels along the B-B 'direction.

[0072]At the same timefigure 1 ,Figure 2A to Figure 2B as well asFigure 3A to 3B The fingerprint recognition device 10 includes a backlight module 100 and a display panel 200....

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Abstract

The invention discloses a fingerprint recognition apparatus including a frontplane, a backplane and a display medium layer. The frontplane includes an upper substrate, a black matrix layer and a color filter layer. The black matrix layer is disposed on the upper substrate, and the color filter layer is disposed on the black matrix layer. The black matrix layer includes a plurality of pixel apertures and a plurality of first apertures. The backplane includes a lower substrate and a sensor layer. The sensor layer includes a plurality of photo sensing elements. The photo sensing elements are configured to receive reflected lights from an object through the first apertures of the black matrix layer. Areas of the photo sensing elements are overlapped with the first apertures in a longitudinal direction. The display medium layer is disposed between the frontplane and the backplane.

Description

Technical field[0001]The present invention relates to a fingerprint recognition apparatus, more specifically, to a fingerprint identification device capable of obtaining a high contrast image.Background technique[0002]In the current screen (in-display) fingerprint recognition, the layout of the photoelectric sensor is to design the pixel pore diameter of the black matrix in the display panel to be used as aperture as a photoelectric sensor. Due to this configuration, a large number of returned light rays in each direction, such as scattered light from the finger, reflecting light, diffuse light, transmitted through a pixel pore diameter. Thus, each photoelectric sensor readily receives incident light having a large incident angle, which carries a portion of the fingerprint image information that is not expected to be received by the photoelectric sensor. Therefore, the contrast of the obtained image is lowered such that the obtained image does not have the expected quality.Inventive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1318H01L27/14627H01L27/14623H01L27/14621
Inventor 林吴维詹承勋
Owner NOVATEK MICROELECTRONICS CORP
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