US 11,709,304 B2
Light source module and display device
Jen-Yuan Chi, Hsinchu (TW); and Yu-Nan Pao, Hsinchu (TW)
Assigned to E Ink Holdings Inc., Hsinchu (TW)
Filed by E Ink Holdings Inc., Hsinchu (TW)
Filed on Mar. 14, 2022, as Appl. No. 17/694,629.
Claims priority of application No. 110120193 (TW), filed on Jun. 3, 2021.
Prior Publication US 2022/0390793 A1, Dec. 8, 2022
Int. Cl. F21V 8/00 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01)
CPC G02B 6/0026 (2013.01) [G02B 6/005 (2013.01); G02F 1/1336 (2013.01); G02F 1/133514 (2013.01); G02F 2202/36 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A light source module, comprising:
a light-emitting element, comprising a light-emitting surface;
a light-guiding plate, comprising a light-incident surface, wherein the light-guiding plate is disposed such that the light-incident surface faces the light-emitting surface; and
a filter, disposed between the light-emitting surface and the light-incident surface, and a center wavelength of a reflection band of the filter falls in a range of 570 nm to 590 nm,
wherein the light-emitting element emits a first light having a first color temperature from the light-emitting surface, the first light is filtered into a second light having a second color temperature after the first light passed through the filter, the light-incident surface of the guiding plate receives the second light, and the first color temperature is lower than the second color temperature,
wherein the first color temperature is between 2500 K and 3800 K and
wherein the second color temperature is between 6000 K and 7000 K.