US 11,656,397 B2
Light guide for an electronic display and electronic display comprising said light guide
Sami Maattanen, Helsinki (FI)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Appl. No. 17/284,581
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
PCT Filed Oct. 26, 2018, PCT No. PCT/EP2018/079410
§ 371(c)(1), (2) Date Apr. 12, 2021,
PCT Pub. No. WO2020/083504, PCT Pub. Date Apr. 30, 2020.
Prior Publication US 2021/0356645 A1, Nov. 18, 2021
Int. Cl. F21V 8/00 (2006.01); G02F 1/1335 (2006.01); G02B 5/04 (2006.01); G02B 5/02 (2006.01)
CPC G02B 6/0053 (2013.01) [G02B 5/0242 (2013.01); G02B 6/0051 (2013.01); G02F 1/133528 (2013.01); G02B 5/0268 (2013.01); G02B 5/04 (2013.01); G02F 2202/28 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An integral light guide for an electronic display, wherein the integral light guide comprises:
a top surface;
a bottom surface; and
a body extending between the top surface and the bottom surface and comprising:
a prism section arranged adjacent to the top surface, wherein the prism section comprises a prism pattern enclosed by the body, and wherein the prism pattern comprises cavities directed inwards into the prism section such that an outer surface of the prism section comprises only flat surfaces;
a microstructure section arranged adjacent to the bottom surface; and
a diffusing section arranged between the prism section and the microstructure section,
wherein the prism section, the microstructure section, and the diffusing section extend in parallel with the top surface, the bottom surface, and each other,
wherein the prism section, the microstructure section, and the diffusing section are superimposed on top of each other,
wherein the prism section and the diffusing section are in direct abutment with each other, and
wherein the microstructure section and the diffusing section are in direct abutment with each other.