US 11,990,071 B2
Display device
Yizhuo Zhao, Guangdong (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/618,478
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Nov. 23, 2021, PCT No. PCT/CN2021/132412
§ 371(c)(1), (2) Date Dec. 12, 2021,
PCT Pub. No. WO2023/087334, PCT Pub. Date May 25, 2023.
Claims priority of application No. 202111352534.7 (CN), filed on Nov. 16, 2021.
Prior Publication US 2024/0013691 A1, Jan. 11, 2024
Int. Cl. G09G 3/20 (2006.01)
CPC G09G 3/20 (2013.01) [G09G 2320/0233 (2013.01); G09G 2320/0247 (2013.01); G09G 2320/0276 (2013.01); G09G 2320/0626 (2013.01); G09G 2320/0673 (2013.01); G09G 2330/021 (2013.01); G09G 2360/16 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A display device, comprising a display panel, a driving module, a first power control module, and a second power control module;
wherein the driving module is configured to transmit a driving signal to the display panel to control the display panel to refresh images at different refresh frequencies;
wherein the first power control module is configured to call white balance look-up tables corresponding to the refresh frequencies of the display panel according to the refresh frequencies of the display panel, so that the display panel displays the images with preset brightness while refreshing the images at the different refresh frequencies;
wherein the second power control module is configured to provide gamma voltages corresponding to the refresh frequencies of the display panel to the display panel when the refresh frequencies of the display panel are switched, so as to reduce a brightness difference when the display panel refreshes the images at the different refresh frequencies;
wherein the first power control module comprises a first control unit and a first power management unit;
wherein the driving module is also configured to transmit a first enable signal to the first control unit when transmitting the driving signal to the display panel; the first control unit is configured to determine the refresh frequencies of the display panel according to the first enable signal; and the first power management unit is configured to call the white balance look-up tables corresponding to the refresh frequencies of the display panel according to the refresh frequencies of the display panel;
wherein the second voltage module comprises a second control unit and a second power management unit; and
wherein the driving module is also configured to transmit a second enable signal to the second control unit when transmitting the driving signal to the display panel; the second control unit is configured to determine whether the refresh frequencies of the display panel are switched according to the second enable signal; and the second power management unit is configured to provide the display panel with the gamma voltages corresponding to the refresh frequencies of the display panel according to the refresh frequencies of the display panel.