Display panel

• US 8,797,630 B2
• Filed: 12/20/2012
• Issued: 08/05/2014
• Est. Priority Date: 09/21/2012
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Chen, Hung-Yi, Chen, Chien-Kai, Liao, Chen-Hsien
• Primary Examiner(s): PINKNEY, DAWAYNE
• Application Number:
  US13/723,104
• Publication Number:
  US 20140085702A1
• Time in Patent Office: 593 Days
• Field of Search: 359290-293, 359/295, 359223-225, 359/243, 359260-263, 359/198, 359301-303, 359315-318, 359/237, 359/242, 359/276, 359/238, 359/245, 359/259, 359/244, 359253-254, 359/265, 349/33
• US Class Current: 359/290
• CPC Class Codes: G02B 26/005 based on electrowetting

Abstract

A display panel includes a first substrate, a third substrate and a second substrate disposed therebetween. A first grid structure having first openings is disposed on the first substrate to expose pixel regions. A second grid structure having second openings and a third grid structure having third openings are disposed on the second substrate and the third substrate, respectively. A first polar solution layer is disposed between the first substrate and the second substrate. A second polar solution layer is disposed between the third substrate and the second substrate. A first non-polar solution layer is disposed within the first openings. A second non-polar solution layer is disposed within the second openings. The second non-polar solution layer disposed in different pixel regions has different colors. A third non-polar solution layer is disposed within the third openings. The third non-polar solution layer disposed in different pixel regions has different colors.

Claims

1. A display panel, having a plurality of pixel regions, each of the pixel regions comprising a display region and a non-display region adjacent to each other, and the display panel comprising:

a first substrate;

a second substrate;

a third substrate, disposed opposite to the first substrate, wherein the second substrate is disposed between the first substrate and the third substrate;

a first grid structure, disposed on the first substrate, and having a plurality of first openings to expose the pixel regions;

a second grid structure, disposed on the second substrate, and having a plurality of second openings to expose the pixel regions;

a third grid structure, disposed on the third substrate, and having a plurality of third openings to expose the pixel regions, wherein the second grid structure and the third grid structure are facing toward each other;

a first polar solution layer, disposed between the first substrate and the second substrate;

a second polar solution layer, disposed between the third substrate and the second substrate;

a first non-polar solution layer, disposed between the first substrate and the first polar solution layer, and disposed in the first openings;

a second non-polar solution layer, disposed between the second substrate and the second polar solution layer, wherein the second non-polar solution layer disposed in two adjacent pixel regions has different colors, wherein the second non-polar solution layer comprises at least a first color droplet, at least a second color droplet and at least a third color droplet, the first color droplet, the second color droplet and the third color droplet are respectively located in different second openings and have different colors;

a third non-polar solution layer, disposed between the third substrate and the second polar solution layer, and the second polar solution layer separates the second non-polar solution layer and the third non-polar solution layer, wherein the third non-polar solution layer disposed in two adjacent pixel regions has different colors, wherein the third non-polar solution layer comprises at least a fourth color droplet, at least a fifth color droplet and at least a sixth color droplet, the fourth color droplet, the fifth color droplet and the sixth color droplet are respectively located in different third openings and have different colors, wherein the first color droplet and the fourth color droplet are located in a same pixel region, have a same color, and have different color saturations, the second color droplet and the fifth color droplet are located in a same pixel region have a same color, and have different color saturations, and the third color droplet and the sixth color droplet are located in a same pixel region have a same color, and have different color saturations;

a plurality of first pixel electrodes, disposed on the first substrate, and located in the display regions, wherein regions between the display regions and the first grid structure define the non-display regions;

a plurality of second pixel electrodes, disposed between the second substrate and the second non-polar solution layer, located in the display regions of the pixel regions, and located corresponding to the first pixel electrodes;

a plurality of third pixel electrodes, disposed between the third substrate and the third non-polar solution layer, located in the display regions of the pixel regions, and located corresponding to the first pixel electrodes;

a first hydrophobic layer, disposed on the first substrate to cover the first pixel electrodes;

a second hydrophobic layer, disposed on the second substrate to cover the second pixel electrodes;

a third hydrophobic layer, disposed on the third substrate to cover the third pixel electrodes; and

a plurality of first light adjusting patterns, disposed on the first substrate, wherein each of the first light adjusting patterns is located in the non-display region of one of the pixel regions.

2. The display panel as claimed in claim 1, wherein the first light adjusting patterns are a plurality of light-shielding patterns.

3. The display panel as claimed in claim 1, further comprising a reflection layer disposed at a side of the third substrate away from the third pixel electrodes, and disposed opposite to the third pixel electrodes.

4. The display panel as claimed in claim 3, further comprising at least one reflection device disposed at a side edge of the third substrate, and disposed adjacent to the reflection layer.

5. The display panel as claimed in claim 3, further comprising a light source disposed beside the third substrate, wherein the reflection layer reflects a light provided by the light source to the third substrate.

6. The display panel as claimed in claim 5, further comprising a plurality of second light adjusting patterns disposed on the third substrate, wherein each of the second light adjusting patterns is located in the non-display region of a corresponding pixel region.

7. The display panel as claimed in claim 6, wherein the second light adjusting patterns are a plurality of reflection patterns.

8. The display panel as claimed in claim 6, wherein a refractive index of the second light adjusting patterns is greater than a refractive index of the third hydrophobic layer.

9. The display panel as claimed in claim 5, further comprising at least one reflection device disposed at a side edge of the third substrate, and disposed adjacent to the reflection layer.

10. The display panel as claimed in claim 5, wherein the third substrate comprises a light guide plate.

11. The display panel as claimed in claim 1, wherein the first non-polar solution layer comprises a plurality of black droplets located in the first openings.

12. The display panel as claimed in claim 1, wherein under a driving state, at least a part of the first non-polar solution layer is located in the corresponding non-display regions, and partially exposes the corresponding display regions.

13. The display panel as claimed in claim 1, wherein under a driving state, at least a part of the second non-polar solution layer is located in the corresponding non-display regions, and partially exposes the corresponding display regions.

14. The display panel as claimed in claim 1, further comprising:

a fourth grid structure, disposed between the second substrate and the first polar solution layer, wherein the fourth grid structure has a plurality of fourth openings to expose the pixel regions;

a plurality of fourth pixel electrodes, disposed between the second substrate and the first polar solution layer, located in the display regions of the pixel regions, and located corresponding to the first pixel electrodes;

a fourth hydrophobic layer, disposed on the second substrate to cover the fourth pixel electrodes; and

a fourth non-polar solution layer, disposed between the fourth hydrophobic layer and the first polar solution layer.

15. The display panel as claimed in claim 14, wherein the fourth non-polar solution layer comprises a plurality of black droplets located in the fourth openings.

16. The display panel as claimed in claim 1, wherein the first hydrophobic layer is located between the first pixel electrodes and the first non-polar solution layer, the second hydrophobic layer is located between the second pixel electrodes and the second non-polar solution layer, and the third hydrophobic layer is located between the third pixel electrodes and the third non-polar solution layer.