Patent ID: 8804317
Filing Date: 2014-08-12
Classification: G02F,G06F,G09F

Abstract:
1. A display device of a folding type, comprising: a first display unit including a first display panel and a first light-transmissive cover located on a viewer's side with respect to the first display panel; a second display unit including a second display panel and a second light-transmissive cover located on the viewer's side with respect to the second display panel; and a biaxial hinge device for coupling the first display unit and the second display unit such that the first display unit is rotatable around a first rotation axis and such that the second display unit is rotatable around a second rotation axis parallel to the first rotation axis; wherein: the first light-transmissive cover includes a first flat portion and a first curved portion provided outer to the first flat portion; the second light-transmissive cover includes a second flat portion and a second curved portion provided outer to the second flat portion; a viewer-side surface of the first flat portion is flat, and a viewer-side surface of the first curved portion is a part of a cylindrical curved surface centered around a first central axis; a viewer-side surface of the second flat portion is flat, and a viewer-side surface of the second curved portion is a part of a cylindrical curved surface centered around a second central axis; the first rotation axis of the biaxial hinge device matches the first central axis of the first light-transmissive cover; the second rotation axis of the biaxial hinge device matches the second central axis of the second light-transmissive cover; wherein the first display unit further includes a first flat housing portion having a flat viewer-side surface and a first curved housing portion having a viewer-side surface which is a part of a cylindrical curved surface centered around the first central axis; the second display unit further includes a second flat housing portion having a flat viewer-side surface and a second curved housing portion having a viewer-side surface which is a part of a cylindrical curved surface centered around the second central axis; the first flat housing portion is located so as to adjoin the first flat portion of the first light-transmissive cover; the second flat housing portion is located so as to adjoin the second flat portion of the second light-transmissive cover; the first curved housing portion is located so as to adjoin the first curved portion of the first light-transmissive cover; the second curved housing portion is located so as to adjoin the second curved portion of the second light-transmissive cover; a distance between the viewer-side surface of the first curved housing portion and the first central axis is longer than a distance between the viewer-side surface of the first curved portion and the first central axis; and a distance between the viewer-side surface of the second curved housing portion and the second central axis is longer than a distance between the viewer-side surface of the second curved portion and the second central axis.