Display device having uneven optical enhance layer and electrical apparatus

1. A display device, comprising:

a first substrate including a plurality of pixel areas;

an optical enhance layer formed on the first substrate and including a plurality of even structures and a plurality of uneven structures;

a display layer formed on the optical enhance layer;

a first electrode formed between the optical enhance layer and the display layer, and completely overlapping the entire optical enhance layer within each pixel area; and

a second electrode formed on the display layer;

wherein for each pixel area, one of the even structures corresponds to a portion of the pixel area, and one of the uneven structures corresponds to another portion of the pixel area.

2. The display device as claimed in claim 1 , wherein the first substrate further includes a plurality of switch devices disposed in the pixel areas and electrically connected to the first electrode.

3. The display device as claimed in claim 1 , further comprising: a second substrate disposed on the second electrode.

4. The display device as claimed in claim 3 , wherein the second substrate includes a plurality of black matrix layers and a plurality of color filter layers, and the color filter layers are separated by the black matrix layers.

5. The display device as claimed in claim 1 , wherein a reflective layer is disposed between the optical enhance layer and the first substrate.

6. The display device as claimed in claim 1 , wherein for each pixel area, the percentage of an area of the another portion of the pixel corresponding to the uneven structure is in a range from 10% to 90%.

7. The display device as claimed in claim 1 , wherein each of the uneven structures comprises a plurality of continuous micro-convexes or micro-concaves, and each of the micro-convexes or the micro-concaves is in the form of a hemisphere shape, a cone, a pyramid shape or a rectangular block shape.

8. The display device as claimed in claim 1 , wherein each of the uneven structures comprises a plurality of discrete micro-convexes.

9. The display device as claimed in claim 1 , wherein for each pixel area, the uneven structure corresponds to an outer area of the pixel area, and the even structure corresponds to an inner area of the pixel area.

10. The display device as claimed in claim 1 , wherein for each pixel area the uneven structure corresponds to an inner area of the pixel area, and the even structure corresponds to an outer area of the pixel area.

11. The display device as claimed in claim 1 , wherein for each pixel area, the even structure and the uneven structure respectively has multiple regions arranged in an annular interlaced manner.

12. The display device as claimed in claim 1 , wherein for each pixel area, the even structure and the uneven structure respectively has multiple regions arranged in a chessboard-like interlaced manner.

13. The display device as claimed in claim 1 , further comprising: a planar layer formed between the optical enhance layer and the first electrode.

14. The display device as claimed in claim 1 , wherein the first electrode and the second electrode are made of transparent and electrically-conductive material.

15. The display device as claimed in claim 1 , wherein the display layer comprises an emission layer.

16. An electrical apparatus, comprising:

a display device, comprising:

a first substrate including a plurality of pixel areas;

an optical enhance layer formed on the first substrate and including a plurality of even structures and a plurality of uneven structures, wherein for each pixel area, one of the even structures corresponds to a portion of the pixel area, and one of the uneven structures corresponds to the rest another portion of the pixel area;

a display layer formed on the optical enhance layer;

a first electrode formed between the optical enhance layer and the display layer, and completely overlapping the entire optical enhance layer within each pixel area; and

a second electrode formed on the display layer; and

a control unit electrically connected to the display device for transmitting signals thereto, wherein the electrical apparatus is a mobile phone, a digital camera, a personal digital assistant, a desk-top computer, a portable computer, a television, a global positioning system, a mobile display, an aviation display or a portable DVD player.