Unlock instant, AI-driven research and patent intelligence for your innovation.

Optical fingerprint sensing module

A light sensing module and sensing module technology are applied in the field of optical fingerprint sensing technology, which can solve the problems of easy scattered transmission of light beams, poor image quality, and impact on identification results.

Active Publication Date: 2019-12-10
PUTIAN JOINTMICRO TECH INC
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned image capturing process, the light beams reflected by the fingerprint are likely to be scattered and transmitted to the image capture device, resulting in poor image quality and affecting the identification result

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
  • Optical fingerprint sensing module
  • Optical fingerprint sensing module
  • Optical fingerprint sensing module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] Various embodiments of the present invention will be described in detail below and illustrated with accompanying drawings. In addition to these detailed descriptions, the present invention can also be widely implemented in other embodiments, any easy replacement, modification, and equivalent changes of any of the embodiments are included in the scope of the present invention, and the scope of the patent application is allow. In the description of the specification, many specific details are provided in order to enable readers to have a more complete understanding of the present invention; however, the present invention may still be practiced under the premise of omitting some or all of the specific details. Furthermore, well-known steps or elements have not been described in detail in order to avoid unnecessarily limiting the invention. The same or similar elements in the drawings will be denoted by the same or similar symbols. It should be noted that the drawings are...

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

An optical fingerprint sensing module comprises a substrate, a semiconductor layer and an optical channel structure layer. The substrate comprises a plurality of light sensing modules which are arranged at intervals. The semiconductor layer is arranged on the substrate. The optical channel structure layer is arranged on the semiconductor layer to form a plurality of optical channels, and the optical channel structure layer comprises a first composite photoresist layer. A microlens structure is arranged above the first composite photoresist layer and at least one position in the first compositephotoresist layer, wherein the plurality of microlens structures form the optical channel. The fingerprint sensing module effectively filters the angle light through the lightproof photoresist layerso as to improve the quality of a sensing image.

Description

technical field [0001] The invention relates to an optical fingerprint sensing technology, in particular to an optical fingerprint sensing module with an optical channel. Background technique [0002] The so-called fingerprint identification, as the name suggests, is to use the unique fingerprint information on the human finger for identification. A common fingerprint recognition device can be composed of two elements. One is the fingerprint sensor (Fingerprint Sensor), the main purpose is to collect a complete fingerprint image. Another element is the fingerprint recognition algorithm (Fingerprint Algorithm). After the fingerprint image is collected by the front-end fingerprint sensor, the fingerprint image is processed and the fingerprint feature points are extracted by the algorithm. After the fingerprint template is generated, the original fingerprint image is discarded, and finally the fingerprint is compared. According to different sensing methods, fingerprint recog...

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): G06K9/00G06K9/20
CPCG06V40/1324G06V10/147
Inventor 申云洪张榉馨高国峰吴霜锦
Owner PUTIAN JOINTMICRO TECH INC