Title:
AN ANALOG-TO-DIGITAL CONVERSION CIRCUIT, A PIXEL COMPENSATION CIRCUIT FOR DISPLAY PANEL, AND METHODS THEREOF
Document Type and Number:
WIPO Patent Application WO/2018/205479
Kind Code:
A1
Abstract:
The present application discloses an analog-to-digital conversion (ADC) circuit. The circuit includes an integral circuit including an operational amplifier and an integral capacitor. The circuit further includes a comparator and a timer. The operational amplifier includes a positive input terminal configured to receive a first voltage, a negative input terminal coupled to a signal-collection line configured to collect an analog current signal, and an output terminal configured to output a first output signal. The comparator is configured to compare the first output signal with a second voltage to generate a second output signal to the timer. The timer is configured to start a timing operation when the operational amplifier receives the analog current signal and end the timing operation when the second output signal changes. A binary data resulted from the timing operation characterizes a digital signal corresponding to the analog current signal.
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Inventors:
SONG CHEN (CN)
MENG SONG (CN)
SONG DANNA (CN)
WU ZHONGYUAN (CN)
MENG SONG (CN)
SONG DANNA (CN)
WU ZHONGYUAN (CN)
Application Number:
PCT/CN2017/102421
Publication Date:
November 15, 2018
Filing Date:
September 20, 2017
Export Citation:
Assignee:
BOE TECHNOLOGY GROUP CO LTD (CN)
International Classes:
H03M1/10
Foreign References:
CN1822506A | 2006-08-23 | |||
JP2003143011A | 2003-05-16 | |||
JP2012124590A | 2012-06-28 | |||
US5198660A | 1993-03-30 | |||
US20170035376A1 | 2017-02-09 | |||
US20150326805A1 | 2015-11-12 |
Other References:
See also references of EP 3622626A4
Attorney, Agent or Firm:
TEE&HOWE INTELLECTUAL PROPERTY ATTORNEYS (CN)
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