Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Photoelectric sensor and display panel

A photoelectric sensor and display panel technology, applied in the field of photoelectric sensing, can solve the problems of small photocurrent and low photoelectric conversion efficiency, and achieve the effect of increasing photocurrent, improving photoelectric conversion efficiency, and prolonging the accumulation time

Inactive Publication Date: 2020-05-15
YUNGU GUAN TECH CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing photoelectric sensors have the problems of low photoelectric conversion efficiency and small photocurrent.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Photoelectric sensor and display panel
  • Photoelectric sensor and display panel
  • Photoelectric sensor and display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0032] As mentioned in the background art, existing photoelectric sensors have the problems of low photoelectric conversion efficiency and small photocurrent. The inventor found that the reason for the above problems is that the photoelectric sensor is a device that converts light into electricity, and the longer the light stays in the photoelectric sensor, the longer the light action time on the photodiode in the photoelectric sensor is. The higher the photoelectric conversion efficiency, the larger the photocurr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The embodiment of the invention discloses a photoelectric sensor and a display panel. The photoelectric sensor comprises a photodiode, the photodiode comprises a first electrode, a PIN structure layerand a second electrode, and the PIN structure layer comprises a P-type semiconductor layer, an N-type semiconductor layer and an I-type semiconductor layer between the P-type semiconductor layer andthe N-type semiconductor layer. The first electrode is electrically connected with the P-type semiconductor layer, and the second electrode is electrically connected with the N-type semiconductor layer. The photoelectric sensor also comprises a first structure layer and a second structure layer which are at least located at the different sides of the photodiode, the first structure layer comprisesa structure layer with light transmitting and light reflecting effects, and the second structure layer comprises a light reflecting structure layer. According to the technical scheme, the light action time of the photodiode can be prolonged, so that the photogenerated current accumulation time is prolonged, the photocurrent is increased, and the photoelectric conversion efficiency is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of photoelectric sensing, and in particular, to a photoelectric sensor and a display panel. Background technique [0002] As a photodetector, the photoelectric sensor can detect the light power incident on it and complete the conversion of the photoelectric signal. It is widely used in fingerprint recognition and other fields. [0003] Existing photosensors usually include a photodiode, and the structure of the photodiode is usually a layer of intrinsic semiconductor (referred to as I) with a very low doping concentration in a PN junction, that is, a PIN photosensor. [0004] However, existing photoelectric sensors have the problems of low photoelectric conversion efficiency and small photocurrent. Contents of the invention [0005] The invention provides a photoelectric sensor and a display panel to improve the photoelectric conversion efficiency of the photoelectric sensor and incr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0216H01L31/105H01L27/32
CPCH01L31/02161H01L31/105H10K59/60
Inventor 蔡俊飞
Owner YUNGU GUAN TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com