US 12,253,758 B2
Illumination device and display device
Masashi Mitsui, Tokyo (JP)
Assigned to Japan Display Inc., Tokyo (JP)
Filed by Japan Display Inc., Tokyo (JP)
Filed on Feb. 25, 2022, as Appl. No. 17/680,571.
Application 17/680,571 is a continuation of application No. PCT/JP2020/027265, filed on Jul. 13, 2020.
Claims priority of application No. 2019-162182 (JP), filed on Sep. 5, 2019.
Prior Publication US 2022/0179271 A1, Jun. 9, 2022
Int. Cl. G09G 3/19 (2006.01); G02F 1/13357 (2006.01); G02F 1/1506 (2019.01)
CPC G02F 1/133615 (2013.01) [G02F 1/1506 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An illumination device comprising:
an electrochromic element; and
light sources provided on a side edge of the electrochromic element,
the electrochromic element comprising:
a first transparent substrate;
a first transparent electrode provided on the first transparent substrate;
a second transparent substrate opposing the first transparent substrate;
projections provided on the second transparent substrate and projecting toward the first transparent substrate;
a second transparent electrode provided on a part of each of the projections; and
an electrolyte layer provided between the first transparent substrate and the second transparent substrate and containing an electrochromic material including a reflective material capable of oxidation-reduction.