公开(公告)号：US20180059479A1

公开(公告)日：2018-03-01

申请号：US15802323

申请日：2017-11-02

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Motonari OGURA ,  Taku YAMADA

IPC: G02F1/1335 ,  F21V8/00

CPC classification number: G02F1/133602 ,  G02B6/005 ,  G02F1/133308 ,  G02F1/133524 ,  G02F2001/133311 ,  G02F2201/36 ,  G02F2202/28

Abstract: A liquid crystal backlight device includes: a frame that includes a first frame and a second frame defining a space; a liquid crystal panel that covers an opening of the first frame; a backlight unit that irradiates the liquid crystal panel with light; an optical sheet; a cushion member that is located between the liquid crystal panel and the first frame, and surrounds the opening without any gap; a plurality of cushion members that are located between the first frame and the optical sheet, surround the opening, and are arranged at a predetermined spacing from each other; and a seal material that seals a hole which is formed through a lateral part of the frame as seen from the front and through which the space and an outside of the liquid crystal backlight device communicate with each other.