公开(公告)号：US11754880B1

公开(公告)日：2023-09-12

申请号：US18089594

申请日：2022-12-28

Applicant: HKC CORPORATION LIMITED

Inventor： Hao Liu ,  Haoxuan Zheng

IPC: G02F1/00 ,  G02F1/13357 ,  G02F1/1335

CPC classification number: G02F1/133611 ,  G02F1/133603 ,  G02F1/133608 ,  G02F1/133612

Abstract: A backlight module includes a plurality of light boards spliced with each other. A splicing seam is defined between adjacent light boards. Each of the light boards includes a top surface including a first surface and a second surface connected to the first surface and disposed on a side of the first surface close to the splicing seam. A plurality of columns of first light-emitting elements are disposed on the first surface. A plurality of second light-emitting elements are disposed on the second surface. At least two columns of the plurality of second light-emitting elements are disposed on the second surface along a direction close to the splicing seam. The first light-emitting elements per column or the second light-emitting elements per column are arranged along an extending direction of the splicing seam. Central light-emitting directions of the second light-emitting elements incline in a direction towards the splicing seam.

公开(公告)号：US12099274B2

公开(公告)日：2024-09-24

申请号：US18518986

申请日：2023-11-25

Applicant: HKC CORPORATION LIMITED

Inventor： Hao Liu ,  Baohong Kang

IPC: G02F1/1333 ,  F21V8/00 ,  G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133607 ,  G02B6/0025 ,  G02B6/0028 ,  G02F1/133603

Abstract: The present application relates to a backlight module and a display device. The backlight module includes a light source, a light guide plate, and a diffusion film; the light guide plate includes a light guide incident surface facing the light source and a light guide emergent surface facing a light emitting direction, a peripheral edge of the light guide emergent surface is a refractive surface, and a distance from an outer edge of the refractive surface to the light guide incident surface is longer than a distance from an inner edge of the refractive surface to the light guide incident surface; and the diffusion film includes a diffusion incident surface and a diffusion emergent surface, and a shape of the diffusion incident surface is fitted to a shape of the light guide emergent surface. The direction and strength distribution of an emitting light path can be changed, and light leakage caused by ray overflow from a backplane due to ray concentration on the edge can be reduced. Moreover, by such a design, restrictions on a sealing strip and a border shading function can be eliminated, and technical support for “borderlessness” can be provided.

公开(公告)号：US12209745B2

公开(公告)日：2025-01-28

申请号：US18218728

申请日：2023-07-06

Applicant: HKC Corporation Limited

Inventor： Hao Liu ,  Baohong Kang

IPC: F21V5/00 ,  F21V7/05 ,  F21V29/503 ,  F21V29/70 ,  F21Y115/10

Abstract: The present disclosure provides a backlight module and a display device. The backlight module includes a substrate, a light-emitting layer, and a light refracting layer. The light-emitting layer is disposed on the substrate and includes multiple light-emitting units arranged at intervals. The light-emitting unit is configured to emit light. The light-refracting layer includes multiple first medium parts and multiple second medium parts, where the first medium part covers a surface of the light-emitting unit, and the second medium part is arranged between adjacent first medium parts. The first medium part has a first refractive index n1 for light emitted by the light-emitting unit, and the second medium part has a second refractive index n2 for the light emitted by the light-emitting unit, where n1>n2.