Display device

• US 10,084,147 B2
• Filed: 06/27/2017
• Issued: 09/25/2018
• Est. Priority Date: 06/28/2016
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Liu, Tung-Kai, Hsieh, Tsau-Hua, Lin, Chun-Hsien, Kuo, Shu-Ming, Hsieh, Chih-Yung
• Primary Examiner(s): Alavi, Ali
• Application Number:
  US15/634,025
• Publication Number:
  US 20170373264A1
• Time in Patent Office: 455 Days
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133519 Overcoatings
• CPC Class Codes: G02F 1/1336 Illuminating devices
• CPC Class Codes: G02F 2201/44 Arrangements combining different electro-active layers, e.g. electrochromic, liquid crystal or electroluminescent layers
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H10K 50/11 characterised by the electroluminescent [EL] layers
• CPC Class Codes: H10K 50/135 comprising mobile ions
• CPC Class Codes: H10K 50/17 Carrier injection layers
• CPC Class Codes: H10K 50/858 comprising refractive means, e.g. lenses
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels

Abstract

A display device is provided. The display device includes a first substrate having a light-emitting region and a first transparent region. The first substrate includes a plurality of transistors and at least one light-emitting diode disposed in the light-emitting region. The light-emitting diode includes a first electrode electrically connected to the corresponding transistor and a first semiconductor layer disposed over the first electrode. The light-emitting diode also includes a second semiconductor layer disposed over the first semiconductor layer and a light-emitting layer disposed between the first semiconductor layer and the second semiconductor layer, wherein the distance between the top surface of the first electrode and the top surface of the second semiconductor layer is between 2 μm and 12 μm.

Claims

1. A display device, comprising:

a first substrate having a light-emitting region and a first transparent region,

wherein the first substrate comprises;

a plurality of transistors; and

at least one light-emitting diode disposed in the light-emitting region,

wherein the light-emitting diode comprises;

a first electrode electrically connected to the corresponding transistor;

a first semiconductor layer disposed over the first electrode of the light-emitting diode;

a second semiconductor layer disposed over the first semiconductor layer; and

a light-emitting layer disposed between the first semiconductor layer and the second semiconductor layer,

wherein a distance between a top surface of the first electrode of the light-emitting diode and a top surface of the second semiconductor layer is in a range between 2 μ

m and 12 μ

m.

2. The display device as claimed in claim 1, wherein the light-emitting region is adjacent to the first transparent region, and the light-emitting region comprises:

a first light-emitting region corresponding to a blue pixel;

a second light-emitting region corresponding to a green pixel; and

a third light-emitting region corresponding to a red pixel.

3. The display device as claimed in claim 2, further comprising:

a first filler disposed in the light-emitting region, and over the first substrate;

a second filler disposed in the light-emitting region, and over the first filler; and

a third filler disposed in the transparent region,

wherein transmittance of the third filler is different than transmittance of the first filler, and the transmittance of the first filler is different than transmittance of the second filler.

4. The display device as claimed in claim 2, wherein the light-emitting diode comprises:

a first light-emitting diode disposed in the first light-emitting region and emitting blue light;

a second light-emitting diode disposed in the second light-emitting region emitting green light; and

a third light-emitting diode disposed in the third light-emitting region emitting red light.

5. The display device as claimed in claim 2, further comprising:

a quantum dot film disposed over the light-emitting diode; and

a light filter disposed over the quantum dot film.

6. The display device as claimed in claim 5, wherein the light-emitting diode comprises:

a first light-emitting diode disposed in the first light-emitting region;

a second light-emitting diode disposed in the second light-emitting region; and

a third light-emitting diode disposed in the third light-emitting region,

wherein the first light-emitting diode, the second light-emitting diode and the third light-emitting diode emit blue light.

7. The display device as claimed in claim 1, further comprising:

a first optical layer disposed between the first substrate and the light-emitting diode; and

a second optical layer disposed over the light-emitting diode.

8. The display device as claimed in claim 7, wherein the light-emitting region comprises:

a first light-emitting region corresponding to a blue pixel;

a second light-emitting region corresponding to a green pixel; and

a third light-emitting region corresponding to a red pixel.

9. The display device as claimed in claim 8, wherein the first light-emitting diode has a first length along a first direction, the second light-emitting diode has a second length along the first direction, and the third light-emitting diode has a third length along the first direction, wherein the first length is greater than the second length, and the second length is greater the third length.

10. The display device as claimed in claim 1, further comprising:

a second substrate disposed opposite to the first substrate; and

a liquid-crystal layer disposed between the first substrate and the second substrate.

11. The display device as claimed in claim 10, wherein the first substrate further comprises:

at least a first transistor electrically connected to the corresponding light-emitting diode; and

a capacitor disposed over the first transistor, wherein the capacitor comprises;

a first electrode disposed on the first transistor;

a second electrode disposed between the first electrode of the capacitor and the first transistor; and

a dielectric layer disposed between the first electrode and the second electrode of the capacitor.

12. The display device as claimed in claim 11, wherein the first electrode of the capacitor has a first projection on the first substrate with a first area, and the second electrode of the capacitor has a second projection on the first substrate with a second area, wherein the first area is smaller than the second area.

13. The display device as claimed in claim 10, wherein the second substrate comprises:

a plurality of second transistors;

an orientation layer disposed between the liquid-crystal layer and the plurality of second transistors, and adjacent to the liquid-crystal layer; and

a first electrode disposed between the orientation layer and the plurality of second transistors, and electrically connected to the plurality of second transistors.

14. The display device as claimed in claim 13, wherein the second substrate further comprises:

a second electrode disposed between the plurality of second transistors and the first electrode of the second substrate.

15. The display device as claimed in claim 7, wherein the light-emitting region overlaps the first transparent region.

16. The display device as claimed in claim 7, wherein the light-emitting region is located on two opposite sides of the light-emitting diode.

17. The display device as claimed in claim 10, wherein the second substrate has a second transparent region, and the first transparent region overlaps the second transparent region.

18. The display device as claimed in claim 11, wherein the first substrate comprises a third electrode disposed over the light-emitting diode.

19. The display device as claimed in claim 11, wherein the first electrode of the capacitor has a first projection on the first substrate with a first area and the third electrode has a third projection on the first substrate with a third area, and the first area is smaller than the third area.

20. The display device as claimed in claim 18, wherein the first substrate comprises a conductive via disposed over the second electrode of the capacitor, and the second electrode of the capacitor is electrically connected to the third electrode through the conductive via.