US 11,754,890 B2
Display, display system, image projection system, and movable object
Takato Hada, Osaka (JP); Takahiro Akiyoshi, Fukui (JP); Hiroki Hara, Osaka (JP); and Keiji Sugiyama, Kyoto (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed on May 19, 2022, as Appl. No. 17/748,504.
Application 17/748,504 is a continuation of application No. 17/666,184, filed on Feb. 7, 2022.
Application 17/666,184 is a continuation of application No. 17/094,239, filed on Nov. 10, 2020, granted, now 11,275,281, issued on Mar. 15, 2022.
Application 17/094,239 is a continuation of application No. 16/454,218, filed on Jun. 27, 2019, granted, now 10,871,686, issued on Dec. 22, 2020.
Claims priority of application No. 2018-125448 (JP), filed on Jun. 29, 2018.
Prior Publication US 2022/0276519 A1, Sep. 1, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G02F 1/13 (2006.01); G02F 1/1347 (2006.01); G02F 1/1333 (2006.01); G02B 27/01 (2006.01); G03B 21/16 (2006.01)
CPC G02F 1/1347 (2013.01) [G02B 27/0101 (2013.01); G02F 1/133382 (2013.01); G03B 21/16 (2013.01); B60K 2370/334 (2019.05); B60K 2370/785 (2019.05)] 17 Claims
OG exemplary drawing
 
1. A head-up display comprising: a liquid-crystal panel including a display screen; a Fresnel lens which is on an opposite side of the liquid-crystal panel from the display screen; a light-diffusion structure disposed below the liquid-crystal panel and above the Fresnel lens; a backlight that emits light toward a light-transmissive member; and a mirror that forms a virtual image corresponding to an image displayed on the display screen of the liquid-crystal panel, in a target space, wherein the light-diffusion structure includes a plurality of fine particles; and an average particle size of the plurality of fine particles is equal to or smaller than 20 μm.