BACKLIGHT DEVICE AND DISPLAY DEVICE PROVIDED WITH THE SAME
First Claim
1. A backlight device of a sidelight type, comprising:
- a light-emitting element;
a light guide plate that includes a light incidence surface on which light from the light-emitting element becomes incident and a light output surface from which incident light is outputted to a side of a display panel; and
an optical sheet that is disposed in opposition to the light output surface of the light guide plate,wherein an inclined surface inclined with respect to the light output surface is formed between the light incidence surface and the light output surface of the light guide plate,the light guide plate is formed so as to have a thickness larger at a portion on a side of the light incidence surface than at a portion on a side of the light output surface, anda restriction member that has a light-blocking property and restricts the light guide plate from being moved in a thickness direction of the light guide plate is disposed forward of a portion of the light output surface of the light guide plate on a side of the light incidence surface.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a backlight device which can suppress deterioration of uniformity. The backlight device (10) is provided with an LED (11), and a light guide plate (12) which includes a light incoming surface (12a) and a light outgoing surface (12b). An inclined surface (12c) which is inclined from the light outgoing surface is formed between the light incoming surface and the light outgoing surface of the light guide plate, and the light guide plate is formed such that the thickness of a portion on the light incoming surface side is more than that of a portion on the light outgoing surface side. At the front of the portion on the light incoming surface side of the light outgoing surface of the light guide plate, a regulating member (13), which has a light blocking characteristic and regulates shift of the light guide plate in the thickness direction of the light guide plate, is arranged.
22 Citations
20 Claims
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1. A backlight device of a sidelight type, comprising:
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a light-emitting element; a light guide plate that includes a light incidence surface on which light from the light-emitting element becomes incident and a light output surface from which incident light is outputted to a side of a display panel; and an optical sheet that is disposed in opposition to the light output surface of the light guide plate, wherein an inclined surface inclined with respect to the light output surface is formed between the light incidence surface and the light output surface of the light guide plate, the light guide plate is formed so as to have a thickness larger at a portion on a side of the light incidence surface than at a portion on a side of the light output surface, and a restriction member that has a light-blocking property and restricts the light guide plate from being moved in a thickness direction of the light guide plate is disposed forward of a portion of the light output surface of the light guide plate on a side of the light incidence surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification