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Optical sensing unit and optical sensing array structure

An array structure and optical sensing technology, applied in the field of optical sensing technology, can solve problems such as reducing the accuracy of fingerprint recognition, and achieve the effect of improving accuracy

Active Publication Date: 2017-12-29
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lattice mismatch between the semiconductor material and the transparent conductive material, it is difficult for the electrons generated by the photosensitive dielectric layer to conduct to the external circuit through the transparent electrode layer, thus affecting the results of subsequent signal analysis and reducing the accuracy of fingerprint identification

Method used

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  • Optical sensing unit and optical sensing array structure
  • Optical sensing unit and optical sensing array structure
  • Optical sensing unit and optical sensing array structure

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0030] figure 1 It is a schematic top view of an optical sensing array structure according to an embodiment of the present invention. see figure 1 The optical sensing array structure 100 includes a plurality of data lines DL, a plurality of scan lines GL, a plurality of photo-sensing units 110 and a plurality of active devices 120 . Wherein, the data lines DL extend in the first direction and are spaced apart from each other, and the scan lines GL extend in the second direction and are spaced apart from each other. The first direction and the second direction may be substantially perpendicular. Here, the data lines DL and the scan lines GL are alternately arranged. Each active device 120 corresponds to each photo-sensing unit 110 , and each active device 120 is coupled to one of the scan l...

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Abstract

The present invention discloses a light sensing unit, which comprises a first electrode, a second electrode, a third electrode, a photosensitive dielectric layer, a bridging electrode and a flat layer. Among them, the second electrodes are located above the first electrode. The third electrode is located above the second electrode. The electric layer is located between the second electrode and the third electrode. The bridged electrode is located at the edge of the electric layer and between the electric layer and the third electrode. The flat layer covers the third electrodes.

Description

technical field [0001] The present invention relates to a light sensing technology, in particular to a light sensing unit and an optical sensing array structure. Background technique [0002] With the development of technology, electronic systems such as mobile phones, personal notebook computers or tablets have become necessary tools in life. In order to prevent important information from being lost or stolen, it has become a trend to equip electronic systems with fingerprint recognition functions. Existing electronic systems have gradually widely used light sensing technology to realize the fingerprint identification function. [0003] The light-sensing fingerprint reader is mainly a light-sensing unit configured in an array on a glass substrate, and the light-sensing unit receives reflected light after a finger is irradiated with a light source for identification. When the crests and troughs of the fingerprint touch the fingerprint reader, there will be an air gap betwe...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1318
Inventor 张世熙傅春霖林男颖丁友信
Owner AU OPTRONICS CORP