Signal acquisition device, signal acquisition method, display device and electronic equipment

A signal collection and signal technology, applied in the fields of collection methods, signal collection devices, display devices and electronic equipment, can solve problems affecting user experience, affecting signal recognition effects such as fingerprints, etc., to improve signal collection quality and save signal collection time , to achieve the effect of miniaturization
CN110929645AActive Publication Date: 2020-03-27CHIPONE TECH BEIJINGCO LTD
8 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
CHIPONE TECH BEIJINGCO LTD
Publication Date
2020-03-27

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a signal acquisition device, a signal acquisition method, a display device and electronic equipment, and the acquisition device comprises: a display panel which comprises a plurality of source lines, a plurality of gate lines and a plurality of sensing units; a grid driving unit which is connected with the plurality of grid lines and is used for sequentially starting the plurality of sensing units; a reading unit which comprises a plurality of analog front ends, wherein each analog front end is connected with one or more source lines and used for reading electric signals of the started sensing unit; and at least one charge release unit connected with the plurality of source lines and used for providing a charge release path for the sensing unit in the sleep stage ofthe signal acquisition device. Charge residues on the photodiode sensor array are effectively removed in a non-working state of the chip, so that the signal acquisition time is saved, and the signalacquisition quality is improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to the field of optical touch technology, in particular to a signal collection device, a collection method, a display device and electronic equipment. Background technique

[0002] In OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) screens, the capacitive touch chip needs to use the sensor on the panel to complete the touch control, while the full-screen optical fingerprint recognition requires another layer of photodiode sensor array to complete the fingerprint recognition. identify.

[0003] Optical fingerprint recognition usually uses the screen of the terminal device as the light-emitting body, irradiates the fingerprint through the optical path, and the returned light passes through the screen and returns to the image sensor under the screen. The terminal device analyzes and compares the returned image with the database to finally identify the fingerprint. Optical fingerprint recognition uses the pr...

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