US 12,142,227 B2
Display device, controller, and display driving method
Juwon Kim, Gyeonggi-do (KR); and MooKyoung Hong, Gyeonggi-do (KR)
Assigned to LG Display Co., Ltd., Seoul (KR)
Filed by LG Display Co., Ltd., Seoul (KR)
Filed on Jun. 30, 2021, as Appl. No. 17/364,669.
Claims priority of application No. 10-2020-0154065 (KR), filed on Nov. 17, 2020.
Prior Publication US 2022/0157257 A1, May 19, 2022
Int. Cl. G09G 3/3275 (2016.01); G09G 3/32 (2016.01); G09G 3/3266 (2016.01)
CPC G09G 3/3275 (2013.01) [G09G 3/32 (2013.01); G09G 3/3266 (2013.01); G09G 2300/0842 (2013.01); G09G 2310/0251 (2013.01); G09G 2320/0233 (2013.01); G09G 2320/0242 (2013.01); G09G 2320/0613 (2013.01); G09G 2320/10 (2013.01); G09G 2330/021 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel including a plurality of sub-pixels electrically connected to a plurality of data lines and a plurality of gate lines;
a data driving circuit configured to output a data signal to at least one of the plurality of data lines for displaying images on the display panel;
a controller configured to control the data driving circuit and supply data to the data driving circuit;
a power management integrated circuit configured to output a source driving voltage, which is an operation voltage of the data driving circuit, to the data driving circuit; and
a feedback line configured to feed back the source driving voltage supplied to the data driving circuit to the controller,
wherein the data driving circuit is configured to output a first data signal based on a pattern of an image as the data signal and a second data signal based on a distance of a sub-pixel from the data driving circuit to which the data signal is supplied as the data signal,
wherein the second data signal is overdriven compared to the first data signal, and
wherein the controller:
determines whether the pattern of the image displayed on the display panel is a charge lack pattern defined in advance based on the fed-back source driving voltage, and
outputs information on whether overdriving is determined to be required or information on an overdriving level based on a result of determining that the pattern is a charge lack pattern.