US 12,379,627 B2
Display apparatus including light sources having different wavelengths
Daewon Yoon, Suwon-si (KR); Byeol Park, Suwon-si (KR); and Mugong Bae, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Apr. 6, 2023, as Appl. No. 18/296,636.
Application 18/296,636 is a continuation of application No. PCT/KR2023/003031, filed on Mar. 6, 2023.
Claims priority of application No. 10-2022-0032971 (KR), filed on Mar. 16, 2022; and application No. 10-2022-0083214 (KR), filed on Jul. 6, 2022.
Prior Publication US 2023/0314876 A1, Oct. 5, 2023
Int. Cl. G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC G02F 1/133612 (2021.01) [G02F 1/133514 (2013.01); G02F 1/133603 (2013.01); G02F 1/133606 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a liquid crystal;
a color filter overlapping the liquid crystal;
a backlight unit configured to supply light to the liquid crystal, the backlight unit including a first light source for emitting light of a first wavelength and a second light source for emitting a second wavelength different from the first wavelength;
a first power supply part configured to supply a first current to the first light source;
a second power supply part configured to supply a second current to the second light source; and
at least one processor, comprising processing circuitry, individually and/or collectively configured to:
control the first power supply part and the second power supply part so that the first and second currents can be simultaneously supplied to the first light source and the second light source,
control the first power supply part and the second power supply part so that intensity of the first current supplied to the first light source is different from intensity of the second current supplied to the second light source,
during a time associated with a sunrise, control the first power supply part to gradually decrease the first current supplied to the first light source and control the second power supply part to gradually increase the second current supplied to the second light source from zero to a preset value, and
during a time associate with a sunset, control the first power supply part to gradually increase the first current supplied to the first light source and control the second power supply part to gradually decrease the second current supplied to the second light source from the preset value to zero.