公开(公告)号：US20240069382A1

公开(公告)日：2024-02-29

申请号：US18388058

申请日：2023-11-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Daesik KIM ,  Kyonaghyong KIM ,  Yasuhiro NISHIDA ,  Jongil KIM

IPC: G02F1/1335 ,  G02F1/13357

CPC classification number: G02F1/133607 ,  G02F1/133603 ,  G02F1/133611 ,  G02F1/133605

Abstract: A display device includes a backlight unit including: a substrate; a Light Emitting Diode (LED) disposed on a surface of the substrate; and a refractive cover configured to surround the LED. The refractive cover includes: a first refractive surface to: be spaced apart from the LED by a preset distance, be positioned on the upper surface of the substrate, be parallel to an axis of the LED or be inclined within one angle from the axis of the LED; a second refractive surface to be a curved surface in which an angle between a tangent line and the axis of the LED increases from a region connected to another upper portion of the first refractive surface toward a direction of the axis of the LED; and a third refractive surface to be connected to an portion of the second refractive surface and be perpendicular to the axis of the LED.