US 12,078,886 B2
Display apparatus and backlight unit thereof
Eun Ju Kim, Ansan-si (KR)
Assigned to Seoul Semiconductor Co., Ltd., Ansan-si (KR)
Filed by Seoul Semiconductor Co., Ltd., Ansan-si (KR)
Filed on Jun. 9, 2023, as Appl. No. 18/332,682.
Application 18/332,682 is a continuation of application No. 17/715,918, filed on Apr. 7, 2022, granted, now 11,675,229.
Application 17/715,918 is a continuation of application No. 17/008,662, filed on Sep. 1, 2020, granted, now 11,300,830, issued on Apr. 12, 2022.
Application 17/008,662 is a continuation of application No. 15/809,259, filed on Nov. 10, 2017, granted, now 11,143,913, issued on Oct. 12, 2021.
Claims priority of provisional application 62/436,553, filed on Dec. 20, 2016.
Claims priority of provisional application 62/422,157, filed on Nov. 15, 2016.
Claims priority of provisional application 62/421,454, filed on Nov. 14, 2016.
Prior Publication US 2023/0324736 A1, Oct. 12, 2023
Int. Cl. G02F 1/133 (2006.01); F21V 8/00 (2006.01); G02F 1/13357 (2006.01); H01L 25/075 (2006.01); G02F 1/1335 (2006.01); H01L 33/46 (2010.01); H01L 33/50 (2010.01); H01L 33/54 (2010.01); H01L 33/60 (2010.01); H01L 33/62 (2010.01)
CPC G02F 1/133606 (2013.01) [G02B 6/0016 (2013.01); G02B 6/0021 (2013.01); G02B 6/003 (2013.01); G02B 6/0036 (2013.01); G02B 6/0055 (2013.01); G02B 6/0073 (2013.01); G02B 6/0083 (2013.01); G02F 1/133605 (2013.01); G02F 1/133608 (2013.01); G02F 1/133611 (2013.01); H01L 25/0753 (2013.01); G02B 6/0043 (2013.01); G02B 6/0068 (2013.01); G02F 1/133603 (2013.01); G02F 1/133607 (2021.01); G02F 1/133614 (2021.01); H01L 25/0756 (2013.01); H01L 33/46 (2013.01); H01L 33/502 (2013.01); H01L 33/507 (2013.01); H01L 33/54 (2013.01); H01L 33/60 (2013.01); H01L 33/62 (2013.01); H01L 2933/0091 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A backlight module comprising:
a frame;
a substrate disposed on the frame;
a light emitting diode disposed on the substrate and including an upper region, a lower region facing the substrate, and a side region disposed between the upper region and the lower region;
an optical part disposed over the upper region of the light emitting diode and including at least one of a wavelength conversion sheet or an optical sheet;
a light guider disposed between the frame and the optical part to cover the upper region of the light emitting diode;
a reflector disposed between the frame and the light guider, the reflector being configured to reflect at least a part of a light emitted from the light emitting diode to direct at least the part of the light to the light guider; and
a first-type electrode and a second type electrode,
wherein the light emitting diode includes a first-type semiconductor layer electrically connected to the first-type electrode and a second-type semiconductor layer electrically connected to the second-type electrode,
wherein the light guider includes a light exit that has a grooved region, and
wherein the grooved region of the light exit covers an upper surface of the light emitting diode.