US 7,532,173 B2
Display device and folding portable terminal
Shunpei Yamazaki, Tokyo (Japan); Yasuyuki Arai, Kanagawa (Japan); Yasuko Watanabe, Kanagawa (Japan); Aya Anzai, Kanagawa (Japan); Hiromichi Godo, Kanagawa (Japan); Junichiro Sakata, Kanagawa (Japan); and Kaoru Tsuchiya, Kanagawa (Japan)
Assigned to Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken (Japan)
Filed on Feb. 27, 2004, as Appl. No. 10/788,255.
Claims priority of application No. 2003-054268 (JP), filed on Feb. 28, 2003; and application No. 2003-367483 (JP), filed on Oct. 28, 2003.
Prior Publication US 2005/0024339 A1, Feb. 03, 2005
Int. Cl. G09G 5/00 (2006.01)
U.S. Cl. 345—1.1  [345/32; 257/88; 348/52] 34 Claims
OG exemplary drawing
 
1. A display device comprising:
a plurality of pixels arranged in a matrix form and a first display screen over one surface of a substrate having a translucency;
a second display screen over an opposite surface of the substrate that is opposite to the one surface of the substrate, each of the plurality of pixels having a light emitting element for emitting light toward the first display screen and the second display screen, wherein the light emitting element comprises a first electrode and a second electrode both having a translucency, and a light-emitting layer interposed therebetween; and
a first polarizer over the one surface of the substrate and a second polarizer over the opposite surface of the one surface of the substrate.