US 12,169,334 B2
Head-up display with polarizers and thermally conducting material
Andrei Pasca, Timisoara (RO)
Assigned to Continental Automotive Technologies GmbH, Hannover (DE)
Appl. No. 18/019,426
Filed by Continental Automotive Technologies GmbH, Hannover (DE)
PCT Filed Jul. 26, 2021, PCT No. PCT/EP2021/070870
§ 371(c)(1), (2) Date Feb. 2, 2023,
PCT Pub. No. WO2022/028938, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 20465552 (EP), filed on Aug. 4, 2020; and application No. 10 2020 209 868.9 (DE), filed on Aug. 5, 2020.
Prior Publication US 2023/0280613 A1, Sep. 7, 2023
Int. Cl. G02F 1/1335 (2006.01); B60K 35/00 (2024.01); B60K 35/23 (2024.01); G02B 27/01 (2006.01); G02F 1/1333 (2006.01)
CPC G02F 1/133548 (2021.01) [B60K 35/00 (2013.01); G02B 27/0101 (2013.01); G02F 1/133385 (2013.01); G02F 1/133536 (2013.01); G02F 1/133628 (2021.01); B60K 35/23 (2024.01); B60K 2360/23 (2024.01); B60K 2360/25 (2024.01); G02B 2027/0118 (2013.01); G02F 1/133514 (2013.01); G02F 2203/01 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A head-up display unit, the head-up display unit comprising:
a picture generating unit for creating an image to be displayed as a virtual image to a viewer, wherein the picture generating unit comprises a liquid crystal layer, a front polarizer, a back polarizer, and a reflective polarizer, wherein the reflective polarizer is arranged upstream the front polarizer and downstream the liquid crystal layer, wherein an optically clear medium is provided between the reflective polarizer and the front polarizer, wherein the optically clear medium is a highly thermally conducting material, wherein the thermal conductivity of the optically clear medium is higher than the thermal conductivity of the front polarizer and the reflective polarizer, and wherein the optically clear medium evacuates heat generated inside the display panel towards the edges of the display; and
an optical unit for projecting the image to be displayed towards an eyebox.