The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2015
Filed:
Oct. 24, 2013
Boe Technology Group Co., Ltd., Beijing, CN;
Beijing Boe Chatani Electronics Co., Ltd., Beijing, CN;
Yang Zhao, Beijing, CN;
Zhendong Zhou, Beijing, CN;
BOE Technology Group Co., Ltd., Beijing, CN;
Beijing BOE Chatani Electronics Co., Ltd., Beijing, CN;
Abstract
The present invention provides a direct type backlight and a display device provided with the direct type backlight. The direct type backlight includes: a backplate; a printed circuit board fixed on the backplate; a number of LED lamp units fixed on the printed circuit board; side frames fixed on inner side walls of the backplate; reflection sheets covering inner wall of cavity formed by the printed circuit board and the side frames, said reflection sheets have lamp holes matching the LED lamp units; outer frames fixed on upper sides of the backplate and the side frames; said direct type backlight further including: a silica gel light guide plate which this the cavity formed by the printed circuit board and the side frames to cover the reflection sheets and the LED lamp units; and optical film disposed on upper surface of the silica gel light guide plate and located between the upper surface of the silica gel light guide plate and the outer frames. By diffusing the light rays emitted from the LED lamps through the silica gel light guide plate, the mixing distance of the LED lamp is shortened, thus the thickness of the direct type backlight is reduced and the display device becomes much thinner.