Backlight assembly and display device having the same
First Claim
1. A backlight assembly comprising:
- a light guide unit having a reflective face and a light exiting face opposite the reflective face;
a light source configured to provide light onto an incident face of the light guide unit; and
a reflection module disposed adjacent the reflective face of the light guide unit and configured to selectively reflect or scatter the light from the light guide unit in response to one or more control signals received by the reflection module including an on signal and an off signal, causing the reflected or scattered light to be emitted from the light guide unit through the light exiting face, the reflection module being disposed on the reflective face so that the reflective face is disposed between the light exiting face and the reflection module.
2 Assignments
0 Petitions
Accused Products
Abstract
A backlight assembly may include a light guide unit, a light source and a reflection module. The light source provides light onto an incident face of the light guide unit. The reflection module may include a first substrate having reflection regions, a lower electrode disposed in each reflection region, a switch element applying an on or off signal to the lower electrode, and an upper electrode. The upper electrode makes contact with or is spaced apart from a reflective face of the light guide unit in accordance with the on or off signal. Thus, light selectively exits the light guide unit through an exiting face of the light guide unit corresponding to each reflection region. A display device has a display module disposed on the exiting face of the light guide unit to display an image. Therefore, the display device has a simplified structure.
11 Citations
28 Claims
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1. A backlight assembly comprising:
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a light guide unit having a reflective face and a light exiting face opposite the reflective face; a light source configured to provide light onto an incident face of the light guide unit; and a reflection module disposed adjacent the reflective face of the light guide unit and configured to selectively reflect or scatter the light from the light guide unit in response to one or more control signals received by the reflection module including an on signal and an off signal, causing the reflected or scattered light to be emitted from the light guide unit through the light exiting face, the reflection module being disposed on the reflective face so that the reflective face is disposed between the light exiting face and the reflection module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A display device comprising:
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a light guide unit having a reflective face and a light exiting face opposite the reflective face; a light source configured to provide light onto an incident face of the light guide unit; a reflection module disposed adjacent to the reflective face of the light guide unit and configured to selectively reflect or scatter the light from the light guide unit in response to one or more control signals received by the reflection module, said one or more control signals including an on signal and an off signal, causing the reflected or scattered light to be emitted from the light guide unit through the light exiting face; and a display module disposed adjacent the light guide unit light exiting face to display an image using light emitted from the light guide unit, wherein the reflection module is disposed on the reflective face so that the reflective face is disposed between the light exiting face and the reflection module. - View Dependent Claims (15, 16, 17, 18)
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19. A display apparatus comprising:
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a light guide including an optical interface surface and a light exit surface different than the optical interface surface; a plurality of optical reflector elements configured to reflect incident light; a first actuator configured to selectively position a first optical reflector element in a first position away from the optical interface surface or a second position proximate to the optical interface surface; and wherein, in response to an “
on”
control signal, the first actuator is configured to selectively position the first optical reflector element in one of the first position or the second position to reflect light to be transmitted through a first associated region of the light exit surface of the light guide. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification