公开(公告)号：US10732459B2

公开(公告)日：2020-08-04

申请号：US16135838

申请日：2018-09-19

Applicant: LG Display Co., Ltd.

Inventor： Hyun-Min Park ,  Rok-Hee Lee ,  Ki-Seong Kim

IPC: G02F1/13357 ,  H01L25/075 ,  H01L25/13 ,  H05K1/02 ,  H05K1/18 ,  H01L33/50 ,  H01L33/52 ,  H01L33/60

Abstract: A backlight unit includes a plurality of light emitting diode (LED) packages on a top surface of a circuit board, an encapsulation member located on the circuit board and covering the plurality of LED packages, and an integrated pattern sheet on the encapsulation member. The integrated pattern sheet includes a base layer, a plurality of reflective patterns at a bottom surface of the base layer and respectively corresponding to the plurality of LED packages, and a plurality of diffusion patterns at a top surface of the base layer, wherein the reflective patterns are configured with a relational expression of c+(t2−t1)*tan {(sin−1(1/n)}>d

公开(公告)号：US10802334B2

公开(公告)日：2020-10-13

申请号：US16140817

申请日：2018-09-25

Applicant: LG Display Co., Ltd.

Inventor： Dong-Hwi Kim ,  Ki-Seong Kim ,  Hyun-Min Park ,  Kyu-Hwan Lee

IPC: G02F1/00 ,  G02F1/13357 ,  F21V8/00 ,  G02F1/1345

Abstract: A liquid crystal display device includes a liquid crystal panel and a backlight unit under the liquid crystal panel and including a circuit board; a plurality of LED packages mounted on the circuit board; a partition wall on the circuit board and surrounding at least one LED package; an encapsulation member covering the plurality of LED packages and the partition wall; and a reflective pattern sheet over the encapsulation member and including a plurality of first reflective patterns corresponding to the plurality of LED packages, respectively, wherein a height of the partition wall is equal to or greater than a height of the at least one LED package and smaller than or equal to a thickness of the encapsulation member.

公开(公告)号：US10816854B2

公开(公告)日：2020-10-27

申请号：US16223715

申请日：2018-12-18

Applicant: LG Display Co., Ltd.

Inventor： Dong-Hwi Kim ,  Ki-Seong Kim ,  Ji-Seok Yang

IPC: G02F1/13357 ,  F21V8/00

Abstract: A backlight unit includes a diffusion plate, wherein the diffusion plate includes a first region along edges of the diffusion plate, and a second region surrounded by the first region, and wherein a thickness of the first region decreases toward an outer side direction of the diffusion plate.

公开(公告)号：US10816852B2

公开(公告)日：2020-10-27

申请号：US16170381

申请日：2018-10-25

Applicant: LG Display Co., Ltd.

Inventor： Il-Soo Kim ,  Dong-Hwi Kim ,  Ki-Seong Kim

IPC: G02F1/1335 ,  G02F1/13357 ,  H01L25/13 ,  H05K1/18 ,  H01L33/58 ,  H01L25/075 ,  H05K1/02 ,  H01L33/54

Abstract: A backlight unit includes: a plurality of light emitting diode (LED) packages on a top surface of a circuit board; an encapsulation layer located on the circuit board and covering the plurality of LED packages; and an integrated pattern sheet on the encapsulation layer, the integrated pattern sheet including: a base layer; a plurality of lens patterns at a top surface of the base layer and respectively corresponding to the plurality of LED packages; and hollow cavity particles at a bottom surface of the base layer and at a region between the plurality of LED packages.