Hollow edge-type backlight module with light-emitting array
First Claim
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1. A hollow edge-type backlight module, comprising:
- a light-emitting array comprising a plurality of light-emitting units arranged in rows and columns, wherein each of the light-emitting units has a first reflection structure, a second reflection structure, at least one first light source and at least one second light source, wherein the first reflection structure and the second reflection structure are mutually mirror-reflected in shape;
whereinthe first reflection structure has a first horizontal surface and a first reflective surface connected to the first horizontal surface, and there is a first angle between the first reflective surface and a surface extended from the first horizontal surface, and the first light source is disposed adjacent to the first horizontal surface; and
the second reflection structure has a second horizontal surface and a second reflective surface connected to the second horizontal surface, and there is a second angle included between the second reflective surface and a surface extended from the second horizontal surface, and the second reflective surface is connected to the first reflective surface, and the second light source is disposed adjacent to the second horizontal surface, wherein the first reflective surface, the second reflective surface and extensions of the first horizontal surface and the second horizontal surface form a space, and the space has a triangular cross-section; and
a diffuser disposed above the light-emitting array, wherein the diffuser has contacts with the first reflective surface and the second reflective surface, and the diffuser, the first light source, the first horizontal surface and the first reflective surface define a first air cavity, and the diffuser, the second light source, the second horizontal surface and the second reflective surface define a second air cavity, and the space is located between the first air cavity and the second air cavity.
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Abstract
A hollow edge-type backlight module with a light-emitting array and a display apparatus containing the same are disclosed. The hollow edge-type backlight module mainly utilizes a hollow reflection structure to replace a light-guide plate structure, and forms a light-emitting unit by collaborating with an edge-type light source, and forms a light-emitting array by appending together a plurality of light-emitting units. The reflection structure of each light-emitting unit has a horizontal surface and a reflective surface connected to the horizontal surface, wherein there is an angle included between the reflective surface and a surface extended from the horizontal surface, and the light source is disposed adjacent to the horizontal surface. A diffuser of the hollow edge-type backlight module is disposed above the reflective surface and the horizontal surface, and the diffuser, the light source, the horizontal surface and the reflective surface define at least one air cavity.
17 Citations
10 Claims
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1. A hollow edge-type backlight module, comprising:
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a light-emitting array comprising a plurality of light-emitting units arranged in rows and columns, wherein each of the light-emitting units has a first reflection structure, a second reflection structure, at least one first light source and at least one second light source, wherein the first reflection structure and the second reflection structure are mutually mirror-reflected in shape;
whereinthe first reflection structure has a first horizontal surface and a first reflective surface connected to the first horizontal surface, and there is a first angle between the first reflective surface and a surface extended from the first horizontal surface, and the first light source is disposed adjacent to the first horizontal surface; and the second reflection structure has a second horizontal surface and a second reflective surface connected to the second horizontal surface, and there is a second angle included between the second reflective surface and a surface extended from the second horizontal surface, and the second reflective surface is connected to the first reflective surface, and the second light source is disposed adjacent to the second horizontal surface, wherein the first reflective surface, the second reflective surface and extensions of the first horizontal surface and the second horizontal surface form a space, and the space has a triangular cross-section; and a diffuser disposed above the light-emitting array, wherein the diffuser has contacts with the first reflective surface and the second reflective surface, and the diffuser, the first light source, the first horizontal surface and the first reflective surface define a first air cavity, and the diffuser, the second light source, the second horizontal surface and the second reflective surface define a second air cavity, and the space is located between the first air cavity and the second air cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification
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Current AssigneeAU Optronics Corporation
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Original AssigneeAU Optronics Corporation
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InventorsTung, Chih-Kang, Chang, Chih-Wei
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Primary Examiner(s)MAY, ROBERT J
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Application NumberUS12/577,297Publication NumberTime in Patent Office988 DaysField of Search362 971- 973, 362/249.02, 362/249.01, 362/237, 362/241, 362/296.01, 362/297, 362300-301, 362/243, 362/245, 362/346, 362/349, 349/62, 349/64US Class Current362/97.1CPC Class CodesG02F 1/133601 for spatial active dimmingG02F 1/133603 with LEDsG02F 1/133605 including specially adapted...
