US 11,699,379 B2
Display device and driving method of display device
Si-Beak Pyo, Cheonan-si (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Gyeonggi-Do (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Jun. 7, 2022, as Appl. No. 17/834,126.
Claims priority of application No. 10-2021-0122963 (KR), filed on Sep. 15, 2021.
Prior Publication US 2023/0085452 A1, Mar. 16, 2023
Int. Cl. G09G 1/20 (2006.01); G09G 3/20 (2006.01); G09G 3/32 (2016.01)
CPC G09G 3/2007 (2013.01) [G09G 3/32 (2013.01); G09G 2310/027 (2013.01); G09G 2320/041 (2013.01); G09G 2320/0673 (2013.01); G09G 2360/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel which displays an image;
a panel driving block which receives an image signal from an outside and provides a data signal to the display panel; and
a temperature measuring sensor disposed on or in the display panel, wherein the temperature measuring sensor measures a temperature of the display panel and provides a measurement temperature to the panel driving block,
wherein the displays the image based on one reference luminance among a plurality of reference luminances,
wherein the one reference luminance is changed from one to another among the reference luminances while the image is displayed,
wherein the panel driving block includes:
a controller which generates image data based on the image signal, wherein the controller includes:
a first memory which stores a plurality of reference gamma voltages respectively corresponding to the reference luminances;
a temperature difference calculating part which calculates a temperature difference between a reference temperature and the measurement temperature, wherein the reference temperature is a temperature corresponding to the one reference luminances among a plurality of reference temperatures; and
a compensation part which generates a correction gamma voltage by correcting a reference gamma voltage based on the temperature difference between the reference temperature and the measurement temperature, wherein the reference gamma voltage is a voltage corresponding to the one reference luminance among the reference gamma voltages; and
a source driver which generates the data signal based on the image data and the correction gamma voltage and provides the data signal to the display panel.