Patent ID: 9529136
Filing Date: 2016-12-27
CPC Classification: G02B

Claim Text:
1. A backlight unit comprising: a light source unit including a light source configured to emit a first light; a quantum dot sheet configured to emit a second light having a different color from the first light; a light guide plate configured to guide a light exiting from the light source unit or the quantum dot sheet; and an optical member including a prism sheet and configured to control the light exiting from the light guide plate, wherein the quantum dot sheet comprises a polymer resin and a plurality of first quantum dots and a plurality of second quantum dots, which are dispersed in the polymer resin, wherein the second light is a white light obtained by mixing a red light, a green light, and a blue light, wherein the second light has a concordance rate with an Adobe RGB color space, which is no less than about 99.9%, wherein the first light has a center wavelength of 457 nm and a full-width half-maximum of 45 nm, and wherein the first quantum dots are configured to emit light having a center wavelength of 531 nm and a full-width half-maximum of 32 nm and the second quantum dots are configured to emit light having a center wavelength of 629 nm and a full-width half-maximum of 35 nm.