Title:
PHOTO-DETECTION PIXEL CIRCUIT, DETECTOR PANEL, AND PHOTOELECTRIC DETECTION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/000856
Kind Code:
A1
Abstract:
A pixel circuit of a photo detector panel. The pixel circuit includes a reset sub-circuit (300) for resetting voltages at a first node (A) and a second node (B), a photoelectric-conversion sub-circuit (100) coupled to the first node (A) and configured to convert an optical signal to a first voltage (V A) at the first node (A), a compensation sub-circuit (200) coupled between the first node (A) and the second node (B) and configured to store the first voltage (V A) and determine a second voltage (V B1) at the second node (B). The pixel circuit further includes an integration sub-circuit (500) coupled to the first node (A) and to determine a third voltage (V B2) at the second node (B) to be applied to a gate of a driving transistor (DTFT) to generate a current (I ds) flowing from an input port provided with a bias voltage (V Bias) to an output port (Output). The current (I ds) is substantially independent from a threshold voltage (V th) of the driving transistor (DTFT) and the bias voltage (V Bias).
Inventors:
MA ZHANJIE (CN)
Application Number:
PCT/CN2017/116567
Publication Date:
January 03, 2019
Filing Date:
December 15, 2017
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
G01N23/04; G09G3/00
Foreign References:
| CN104867431A | 2015-08-26 | |||
| CN105206221A | 2015-12-30 | |||
| CN101943974A | 2011-01-12 | |||
| CN102081481A | 2011-06-01 | |||
| CN102997993A | 2013-03-27 | |||
| US20160163259A1 | 2016-06-09 | |||
| US20050243031A1 | 2005-11-03 | |||
| US20110193856A1 | 2011-08-11 |
Other References:
See also references of EP 3646013A4
Attorney, Agent or Firm:
TEE&HOWE INTELLECTUAL PROPERTY ATTORNEYS (CN)
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