US 12,393,080 B2
Image output panel and head-up display
Toshiharu Matsushima, Tokyo (JP)
Assigned to JAPAN DISPLAY INC., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Mar. 17, 2023, as Appl. No. 18/185,411.
Claims priority of application No. 2022-047076 (JP), filed on Mar. 23, 2022.
Prior Publication US 2023/0305339 A1, Sep. 28, 2023
Int. Cl. G02F 1/13363 (2006.01); G02B 27/01 (2006.01); G02F 1/1335 (2006.01)
CPC G02F 1/133638 (2021.01) [G02B 27/0101 (2013.01); G02F 1/133528 (2013.01); G02B 2027/0118 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An image output panel comprising:
a first polarization plate that transmits light polarized in a first direction and blocks light polarized in a direction different from the first direction;
a second polarization plate that transmits light polarized in a second direction different from the first direction and blocks light polarized in a direction different from the second direction;
a liquid crystal panel that is disposed between the first polarization plate and the second polarization plate and includes a plurality of pixels in which a degree of change in a polarization direction of light entering from one side and travelling toward the other side is individually controllable; and
a retardation plate that faces the liquid crystal panel with the first polarization plate or the second polarization plate that is interposed between the retardation plate and the liquid crystal panel, and changes the polarization direction of light from the first direction to the second direction or from the second direction to the first direction, wherein
when a polarization direction of output light that is output from the image output panel is referred to as a first polarization direction, the output light having the first polarization direction is light having the first polarization direction included in incident light from a light source.