ELECTROLUMINESCENT DISPLAY

• US 20080100540A1
• Filed: 05/17/2007
• Published: 05/01/2008
• Est. Priority Date: 10/30/2006
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Chao, Ching-Ian, Wei, Mao-Kuo, Chen, Kuan-Yu, Lin, Hoang-Yan, Lee, Jiun-Haw, Li, Shi-Hao, Ho, Yu-Hsuan, Hsu, Sheng-Chih
• Granted Patent: US 8,026,872 B2
• Time in Patent Office: Days
• US Class Current: 345/76
• CPC Class Codes: H10K 50/858 comprising refractive means, e.g. lenses
• CPC Class Codes: H10K 59/879 comprising refractive means, e.g. lenses

Abstract

An electroluminescent display includes an electroluminescent panel, and at least one brightness enhanced film. The electroluminescent panel has a plurality of sub-pixels, and at least one illumination surface. The brightness enhanced film is disposed on the at least one illumination surface. The brightness enhanced film has a plurality of micro lenses, and the width of the micro lens is smaller than half of the minimum width of the sub-pixels.

Claims

1. An electroluminescent display, comprising:

an electroluminescent panel having a plurality of sub-pixels and at least one illumination surface; and

at least one brightness enhanced film having a plurality of micro lenses, disposed on the at least one illumination surface, wherein each of the plurality of micro lenses has a width smaller than half of the minimum width of the plurality of sub-pixels.

2. The electroluminescent display of claim 1, wherein the plurality of micro lenses are arranged in a rectangular array.

3. The electroluminescent display of claim 1, wherein the plurality of micro lenses are arranged in a square array.

4. The electroluminescent display of claim 1, wherein each of the plurality of sub-pixels is a rectangular area, and the minimum width of the plurality of sub-pixels is the width of the rectangular area.

5. The electroluminescent display of claim 1, wherein each of the plurality of micro lenses has a hemisphere-like structure.

6. The electroluminescent display of claim 5, wherein the width of each of the plurality of micro lenses is the diameter of the hemisphere-like structure.

7. The electroluminescent display of claim 1, wherein each of the plurality of micro lenses has a semicylinder-like structure.

8. The electroluminescent display of claim 7, wherein the width of each of the plurality of micro lenses is a diameter of the semicylinder-like structure.

9. The electroluminescent display of claim 7, wherein the semicylinder-like structure has a length smaller than the width of each sub-pixel.

10. The electroluminescent display of claim 7, wherein the plurality of sub-pixels comprise a plurality of red sub-pixels, green sub-pixels and blue sub-pixels, and the sub-pixels having the same color are arranged in the same direction.

11. The electroluminescent display of claim 10, wherein the semicylinder-like structure has a major axis direction, and the major axis direction is substantially parallel to the arranged direction of the sub-pixels having the same color.

12. The electroluminescent display of claim 1, wherein the electroluminescent panel comprises an organic light emitting diode panel or a polymer light emitting diode panel.

13. The electroluminescent display of claim 1, wherein the brightness enhanced film is adhered to the surface of the at least one illumination surface of the electroluminescent panel.