US 12,013,614 B2
Display apparatus and light source device thereof
Sungyeol Kim, Suwon-si (KR); Kyungsoo Park, Suwon-si (KR); Chunsoon Park, Suwon-si (KR); and Kyehoon Lee, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Apr. 28, 2023, as Appl. No. 18/309,257.
Application 18/309,257 is a continuation of application No. 17/582,644, filed on Jan. 24, 2022, granted, now 11,675,232.
Application 17/582,644 is a continuation of application No. 17/340,521, filed on Jun. 7, 2021, granted, now 11,262,620, issued on Mar. 1, 2022.
Application 17/340,521 is a continuation of application No. PCT/KR2021/002883, filed on Mar. 9, 2021.
Claims priority of application No. 10-2020-0140235 (KR), filed on Oct. 27, 2020; and application No. 10-2020-0156363 (KR), filed on Nov. 20, 2020.
Prior Publication US 2023/0258981 A1, Aug. 17, 2023
Int. Cl. G02F 1/13357 (2006.01); F21K 9/64 (2016.01); F21Y 105/16 (2016.01); F21Y 115/10 (2016.01)
CPC G02F 1/133621 (2013.01) [F21K 9/64 (2016.08); G02F 1/133602 (2013.01); F21Y 2105/16 (2016.08); F21Y 2115/10 (2016.08)] 14 Claims
OG exemplary drawing
 
1. A display apparatus comprising:
a printed circuit board (PCB);
a light emitting diode (LED) chip mounted on the PCB and configured to emit light;
an optical dome disposed over and enclosing the LED chip;
a distributed Bragg reflector (DBR) layer arranged on an upper surface of the LED chip;
a liquid crystal panel configured to block or pass light output from the LED chip; and
an optical film arranged between the LED chip and the liquid crystal panel,
wherein a ratio of a height of the optical dome to a diameter of a bottom surface of the optical dome is 0.25 to 0.31, and
wherein the optical film comprises a quantum dot sheet formed to enhance color reproducibility by making a change in wavelength of light.