US 9,810,828 B2
Liquid crystal display device and backlight
Hirohisa Miki, Tokyo (JP); and Shigesumi Araki, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Sep. 27, 2016, as Appl. No. 15/276,862.
Claims priority of application No. 2015-226324 (JP), filed on Nov. 19, 2015.
Prior Publication US 2017/0146719 A1, May 25, 2017
Int. Cl. F21V 8/00 (2006.01); G02F 1/1335 (2006.01)
CPC G02B 6/0026 (2013.01) [G02B 6/0001 (2013.01); G02B 6/0003 (2013.01); G02B 6/0031 (2013.01); G02F 1/133615 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A backlight used for a display device, wherein:
the backlight includes a light guide plate, an LED, and a wavelength converter between the light guide plate and the LED, and a reflection sheet is applied to lower sides of the light guide plate and the wavelength converter,
the wavelength converter includes a semiconductor quantum dot in a supporter,
the wavelength converter has a first side surface and a second side surface, the second side surface faces the light guide plate,
the first side surface opposes to the second side surface,
the LED faces to the first side surface,
the reflection sheet has an erected part, and
the erected part covers a part of the first surface that does not face the LED.