Directional backlight unit, three-dimensional image display apparatus having the same, and method of manufacturing the same
AssigneeSamsung Electronics Co., Ltd.
InventorsDongsik Shim, Bongsu Shin, Dongouk Kim, Joonyong Park, Jihyun Bae, Sunghoon Lee, Jaeseung Chung
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Abstract
There are provided a backlight unit, a 3D image display apparatus, and a method of manufacturing the same. The backlight unit may include a light source, a light guide plate that guides light irradiated from the light source, and including an exit surface through which the light exits, and a reflection plate provided on at least a part of the exit surface of the light guide plate.
Claims25
A backlight unit comprising:
- a light source;
- a light guide plate configured to guide light irradiated from the light source, and comprising an exit surface through which the light exits;
- a reflection plate provided on at least a part of an edge of the exit surface of the light guide plate, the reflection plate being different from the light guide plate and the reflection plate being separately formed on the light guide plate;
- a diffractor provided on the exit surface of the light guide plate,
- wherein the diffractor has an area that is less than an area of the exit surface of the light guide plate, and
- wherein the reflection plate is provided on an edge region of the exit surface of the light guide plate where the diffractor is not provided.
A three-dimensional (3D) image display apparatus comprising:
- a light source;
- a light guide plate configured to guide light irradiated from the light source, and comprising an exit surface through which the light exits;
- a diffractor provided on the exit surface of the light guide plate and comprising gratings configured to adjust an exit direction of the light;
- a reflection plate provided on at least a part of an edge of the exit surface of the light guide plate, the reflection plate being different from the light guide plate and the reflection plate being separately formed on the light guide plate;
- and
- a display panel configured to form an image by using the light exited through the diffractor,
- wherein the diffractor has an area less than an area of the exit surface of the light guide plate, and
- wherein the reflection plate is provided on an edge region of the exit surface of the light guide plate where the diffractor is not provided.
A method of manufacturing a three-dimensional (3D) image display apparatus, the method comprising:
- depositing a reflection layer on a light guide plate;
- forming a reflection plate by etching a part of the reflection layer and remaining an edge the reflection layer, the reflection plate being different from the light guide plate and the reflection plate being separately formed on the light guide plate;
- combining a diffractor having an area less than an area of an exit surface of the light guide plate with the etched part;
- coupling a display panel to the reflection plate;
- and
- providing the reflection plate on an edge region of the exit surface of the light guide plate where the diffractor is not provided.
A backlight unit comprising:
- a light guide plate configured to guide a light received from a light source;
- a reflection plate formed on a first surface of the light guide plate through which the light exits the light guide plate towards a display panel, the reflection plate being different from the light guide plate and the reflection plate being separately formed on the light guide plate;
- and
- a diffractor formed on the first surface of the light guide plate and configured to control the light exiting the light guide plate,
- wherein the diffractor has an area less than an area of an exit surface of the light guide plate, and
- wherein the reflection plate is provided on an edge region of the exit surface of the light guide plate where the diffractor is not provided.
Dependencies are inferred from the claim text.