US 11,927,793 B2
Double-sided display device
Yi-Hui Lee, Miao-Li County (TW); Kuan-Chou Chen, Miao-Li County (TW); and Yung-Chih Cheng, Miao-Li County (TW)
Assigned to INNOLUX CORPORATION, Chu-Nan Miao-Li County (TW)
Filed by InnoLux Corporation, Miao-Li County (TW)
Filed on Feb. 28, 2023, as Appl. No. 18/176,090.
Claims priority of provisional application 63/325,978, filed on Mar. 31, 2022.
Claims priority of application No. 202210484764.7 (CN), filed on May 6, 2022.
Prior Publication US 2023/0314693 A1, Oct. 5, 2023
Int. Cl. F21V 8/00 (2006.01)
CPC G02B 6/0063 (2013.01) [G02B 6/0036 (2013.01); G02B 6/0038 (2013.01); G02B 6/0051 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A double-sided display device, comprising:
a first panel;
a second panel arranged opposite to the first panel;
a light guide plate arranged between the first panel and the second panel, wherein the light guide plate includes:
a main body portion including a first surface and a second surface;
a first pattern arranged on the first surface; and
a second pattern arranged on the second surface; and
a light source arranged adjacent to the light guide plate,
wherein the first pattern is different from the second pattern,
wherein the light source has an optical axis, the light guide plate has a center line perpendicular to a normal direction of the light guide plate, and a distance between the optical axis and the center line satisfies:
0≤D1≤¼×T1,
where D1 represents the distance between the optical axis and the center line, and T1 represents a thickness of the light guide plate.