CONTROL APPARATUS AND CONTROL METHOD FOR CHARGING TIME OF DISPLAY PANEL, AND ELECTRONIC DEVICE

WIPO Patent Application WO/2020/259545

A1

A control method for the charging time of a display panel, comprising: within t0+k△t in a (k+1)th blanking time, writing a data voltage into a gate of a driving transistor, and detecting the voltage Vk_ji of a second electrode of the driving transistor; within t0+(k+r)△t in a (k+1+r)th blanking time, writing a data voltage into the gate of the driving transistor, and detecting the voltage Vk+1_ji of the second electrode of the driving transistor; determining whether △Vj,i=Vk+1_ji-Vk_ji is less than or equal to a target voltage difference VT; if △Vj,i≤VT, then the expected charging time of a sub-pixel is T=t0+k△t; and if △Vj,i>VT, then repeating said charging steps to obtain △Vj,i=Vk+p+1_(j,i)-Vk+p_(j,i), comparing △Vj,i to the magnitude of the target voltage difference VT until △Vj,i≤VT, and using t0+(k+p+r-1)△t as the expected charging time of a sub-pixel of a j-th row and i-th column, wherein the value of p starts from 1, and the value of p increases by 1 for every cycle.

HE MIN (CN)
MENG SONG (CN)
YUAN CAN (CN)
CAO CHUN (CN)
LI MENG (CN)
HUANG YONGCHAO (CN)

PCT/CN2020/097952

December 30, 2020

June 24, 2020

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BOE TECHNOLOGY GROUP CO LTD (CN)
HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO LTD (CN)

G09G3/3233; G09G3/3291

CN110111740A	2019-08-09
CN107657923A	2018-02-02
CN108417169A	2018-08-17
CN107093403A	2017-08-25
CN109427298A	2019-03-05
CN103177685A	2013-06-26
US20140347332A1	2014-11-27

BEIJING ZBSD PATENT&TRADEMARK AGENT LTD. (CN)

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