DISPLAY DEVICE

• US 20190325791A1
• Filed: 04/24/2018
• Published: 10/24/2019
• Est. Priority Date: 04/24/2018
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Lin, Hsiao-Lang, Tsai, Tsung-Han
• Granted Patent: US 10,762,806 B2
• Time in Patent Office: Days
• CPC Class Codes: F21V 13/08 the elements being filters or photoluminescent elements and reflectors
• CPC Class Codes: F21V 13/12 Combinations of only three kinds of elements
• CPC Class Codes: F21V 9/08 for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40
• CPC Class Codes: G02B 5/0242 by means of dispersed particles
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/285 comprising deposited thin solid films G02B5/281 - G02B5/289 take precedence; multilayered film filters for fibre optic multiplexing G02B6/29361
• CPC Class Codes: G02B 5/3058 comprising electrically conductive elements, e.g. wire grids, conductive particles
• CPC Class Codes: G02F 1/133617 Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
• CPC Class Codes: G02F 2201/307 Reflective grating, i.e. Bragg grating
• CPC Class Codes: G09F 13/12 using a transparent mirror or other light reflecting surface transparent to transmitted light whereby a sign, symbol, picture or other is visible only when illuminated
• CPC Class Codes: H10K 2102/331 Nanoparticles used in non-emissive layers, e.g. in packaging layer

Abstract

The present disclosure provides a display device including a light source, a substrate on the light source, a first transflective layer on the substrate, a partition layer on the first transflective layer, a first light converting layer, and a second converting layer. The first transflective layer includes at least one hole, and the partition layer includes a first opening, a second opening, and a third opening overlapped with the hole. The first light converting layer is disposed in the first opening, and the second light converting layer is disposed in the second opening.

Claims

1. A display device, comprising:

a light source;

a substrate disposed on the light source;

a first transflective layer disposed on the substrate and comprising at least one hole;

a partition layer disposed on the first transflective layer, the partition layer comprising a first opening, a second opening, and a third opening overlapped with the at least one hole;

a first light converting layer disposed in the first opening; and

a second light converting layer disposed in the second opening;

wherein the at least one hole and the third opening jointly form a step profile.

2. The display device of claim 1, further comprising a filling layer disposed in the hole.

3. The display device of claim 1, further comprising a second transflective layer disposed between the light source and the first light converting layer and between the light source and the second light converting layer, and a thickness of the first transflective layer is greater than a thickness of the second transflective layer.

4. The display device of claim 1, wherein the first transflective layer comprises a plurality of first dielectric layers and a plurality of second dielectric layers alternately stacked on the substrate, and

wherein the first dielectric layers comprise a first refractive index, the second dielectric layers comprise a second refractive index, and a difference between the first refractive index and the second refractive index is greater than or equal to 0.3.

5. The display device of claim 1, wherein the partition layer comprises a first wall part between the third opening and the first opening, the first wall part is separated from the substrate by the first transflective layer, a surface of the first wall part facing the substrate has a first edge adjacent to the third opening, a surface of the first transflective layer facing the substrate has a second edge adjacent to the first edge, a spacing between a projection of the first edge projected on the surface of the first transflective layer in a normal direction of the display device and the second edge is defined as a first spacing, and the first spacing is greater than 0 and less than or equal to 10 micrometers.

6. The display device of claim 1, further comprising a plurality of light scattering particles disposed in the hole.

7. A display device, comprising:

a light source;

a substrate disposed on the light source;

a first transflective layer disposed on the substrate and comprising at least one hole;

a partition layer disposed between the light source and the substrate, the partition layer comprising a first opening, a second opening, and a third opening overlapped with the at least one hole;

a first light converting layer disposed in the first opening; and

a second light converting layer disposed in the second opening;

wherein the partition layer is in contact with the substrate.

8. The display device of claim 7, wherein the substrate comprises a first surface facing the light source and a second surface opposite to the first surface, and the first transflective layer is disposed on the first surface of the substrate.

9. The display device of claim 7, wherein the substrate comprises a first surface facing the light source and a second surface opposite to the first surface, and the first transflective layer is disposed on the second surface of the substrate.

10. The display device of claim 7, further comprising a second transflective layer disposed between the light source and the first transflective layer, and a thickness of the first transflective layer is greater than a thickness of the second transflective layer.

11. The display device of claim 7, wherein the first transflective layer comprises a plurality of first dielectric layers and a plurality of second dielectric layers alternately stacked on the substrate, and

wherein the first dielectric layers comprise a first refractive index, the second dielectric layers comprise a second refractive index, and a difference between the first refractive index and the second refractive index is greater than or equal to 0.3.

12. The display device of claim 7, wherein the partition layer comprises a first wall part between the third opening and the first opening, a surface of the first wall part facing the substrate is in contact with the substrate, the surface of the first wall part facing the substrate has a first edge adjacent to the third opening, a surface of the first transflective layer facing the substrate has a second edge adjacent to the first edge, a spacing between the first edge and the second edge is defined as a first spacing, and the first spacing is greater than 0 and less than or equal to 10 micrometers.

13. The display device of claim 7, further comprising a plurality of light scattering particles disposed in the third opening.

14. A display device, comprising:

a light source;

a substrate disposed on the light source;

a first transflective layer disposed on the substrate;

a partition layer disposed on the first transflective layer, and the partition layer comprising a first opening, a second opening, and a third opening;

a first light converting layer disposed in the first opening; and

a second light converting layer disposed in the second opening;

wherein a part of the first transflective layer is extended into the third opening in a normal direction of the display device.

15. The display device of claim 14, further comprising a filling layer, wherein the first transflective layer comprises at least one hole overlapped with the third opening, and the filling layer is disposed in the hole.

16. The display device of claim 14, further comprising a second transflective layer disposed between the light source and the first transflective layer, and a thickness of the first transflective layer is greater than a thickness of the second transflective layer.

17. The display device of claim 14, wherein the first transflective layer comprises a plurality of first dielectric layers and a plurality of second dielectric layers alternately stacked on the substrate, and

wherein the first dielectric layers comprise a first refractive index, the second dielectric layers comprise a second refractive index, and a difference between the first refractive index and the second refractive index is greater than or equal to 0.3.

18. The display device of claim 14, wherein the partition layer comprises a first wall part between the third opening and the first opening, the first wall part is separated from the substrate by the first transflective layer, and a surface of the first wall part facing the substrate has a first edge adjacent to the third opening, a surface of the first transflective layer facing the substrate has a second edge adjacent to the first edge, spacing between a projection of the first edge projected on the surface of the first transflective layer in a normal direction of the display device and the second edge is defined as a first spacing, and the first spacing is greater than 0 and less than or equal to 10 micrometers.

19. The display device of claim 14, wherein the first transflective layer comprises a first part and a second part connected to the first part, the first part and the second part are overlapped with the third opening, and a thickness of the first part is greater than a thickness of the second part.

20. The display device of claim 14, further comprising a plurality of light scattering particles disposed in the third opening.