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Imaging sensor and imaging module

An imaging sensor and tactile technology, applied in character and pattern recognition, instruments, electric solid-state devices, etc., can solve the problems of chromatic aberration and poor appearance of imaging sensors, and achieve the effect of improving appearance and reducing chromatic aberration

Active Publication Date: 2018-07-17
SHANGHAI OXI TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing technology, the appearance of the imaging sensor with the touch wake-up function is not good, and there is a problem of chromatic aberration

Method used

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  • Imaging sensor and imaging module

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Experimental program
Comparison scheme
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Embodiment Construction

[0052] It can be seen from the background art that there is a problem of chromatic aberration in the imaging sensor that introduces the touch wake-up function in the prior art. Now combine the structure of a touch-wake-up imaging sensor to analyze the cause of its chromatic aberration problem:

[0053] refer to figure 1 , shows a schematic structural diagram of a wake-on-touch imaging sensor.

[0054] The imaging sensor includes:

[0055] A substrate 10; a pixel array 11 located on the substrate 10, including pixel units arranged in an array, for converting optical signals with fingerprint information into electrical signals; a drive circuit 12 located on the substrate 10, used to generate The driving signal from which the electrical signal is read out; the plurality of scanning lines 13 on the substrate 10 are connected to the driving circuit 12 and the pixel unit for transmitting the driving signal; the touch layer 14 on the substrate 10 is used for As a plate of a capaci...

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Abstract

The invention provides an imaging sensor and an imaging module. The imaging sensor comprises a substrate; a plurality of pixel units arranged on the substrate and used for collecting optical signals with imaging information and converting the optical signals into pixel electric signals, wherein the pixel units are arranged in an array to form a pixel array; a plurality of bias voltage pseudo-pixelunits arranged around the pixel array, connected with the pixel units and used for providing bias voltage for the pixel units; and at least one touch pseudo-pixel unit arranged at one side, away fromthe pixel units, of the bias voltage pseudo-pixel units, and used for constructing a capacitor structure to sense touch and to form a touch electric signal. The technical scheme can effectively reduce chromatic aberration between the bias voltage pseudo-pixel units as well as the touch pseudo-pixel unit and the pixel units, and helps to improve the appearance of the formed imaging sensor.

Description

technical field [0001] The invention relates to the field of imaging sensors, in particular to an imaging sensor and an imaging module. Background technique [0002] Fingerprint identification technology collects the fingerprint image of the human body through the imaging sensor, and then compares it with the existing fingerprint imaging information in the fingerprint identification system to realize identity identification. Due to the convenience of use and the uniqueness of human fingerprints, fingerprint recognition technology has been widely used in various fields, such as: public security bureaus, customs and other security inspection fields, building access control systems, and consumer products such as personal computers and mobile phones, etc. [0003] At present, the application of imaging sensors in mobile terminal equipment is to use fingerprints for unlocking. However, due to the limited battery capacity of the mobile terminal, in order to reduce the energy cons...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/1318G06F3/0418H01L27/14678H01L27/14643H01L27/14612G06F3/044G06F3/04166G06F3/04164
Inventor 郑娅洁朱虹凌严
Owner SHANGHAI OXI TECH