US 11,782,313 B2
Backlighting device for the display screen of a television or mobile phone
Johannes Otto Rooijmans, Oss (NL)
Assigned to Gemex Consultancy B.V., Oss (NL)
Appl. No. 17/607,055
Filed by Gemex Consultancy B.V., Oss (NL)
PCT Filed Apr. 30, 2019, PCT No. PCT/EP2019/061120
§ 371(c)(1), (2) Date Oct. 28, 2021,
PCT Pub. No. WO2020/221448, PCT Pub. Date Nov. 5, 2020.
Prior Publication US 2022/0155641 A1, May 19, 2022
Int. Cl. G02F 1/13357 (2006.01); G02F 1/13363 (2006.01); G09G 3/36 (2006.01)
CPC G02F 1/133609 (2013.01) [G02F 1/133603 (2013.01); G02F 1/133606 (2013.01); G02F 1/133637 (2021.01); G09G 3/3607 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A backlighting device for a screen for a television, mobile phone or the like, wherein the backlighting device comprises a plurality of clusters of LED light sources, each cluster comprising:
a first LED light source adapted to emit light having a peak wavelength between 600 and 630 nm;
a second LED light source adapted to emit light having a peak wavelength between 510 and 530 nm;
a third LED light source adapted to emit light having a peak wavelength between 440 and 460 nm;
wherein the light emitted by at least the second LED light source has a bandwidth of less than 10 nm and an intensity of the peak wavelength of the third LED light source is less than 200% of the maximum of either of the peaks of the first or second LED light sources.