KR-20260068137-A - COLOR CONVERSION SOLID STATE DEVICE

Abstract

The present disclosure relates to creating various functional microdevices by incorporating a function-modulating material and creating a sealing capsule for protecting such material. The present disclosure also relates to a solid-state device and a method for changing the color of a light-emitting element to a different color.

Inventors

• 차지 골람레자

Assignees

• 뷰리얼 인크.

Dates

Publication Date

20260513

Application Date

20210603

Priority Date

20200603

Claims (20)

1. As a solid-state device, Backplane; A light-emitting element at the top of the above backplane; A light distribution layer at the top of the light-emitting element; and A solid-state device comprising a color conversion layer on top of the light distribution layer.
2. A solid-state device according to claim 1, wherein the backplane includes a circuit for controlling the light-emitting element.
3. In claim 1, the backplane is a solid-state device having a flattening layer on top.
4. In claim 1, the light-emitting element is a solid-state device located on the top of a reflective layer.
5. A solid-state device according to claim 1, wherein the light-emitting element is a micro LED formed or transferred from a backplane or substrate.
6. A solid-state device according to claim 1, wherein the reflective particles of the light distribution layer are located inside the polymer.
7. In paragraph 5, the solid-state device wherein the reflection particle is positioned substantially in the center of the light distribution layer.
8. A solid-state device according to claim 1, wherein the color conversion layer extends over the light distribution layer.
9. A solid-state device according to claim 1, wherein the color conversion layer is a quantum dot.
10. A solid-state device according to claim 1, wherein the shape of the light distribution layer is thicker the closer it is to the light-emitting element.
11. A solid-state device according to claim 1, wherein another light distribution layer is located on top of the color conversion layer.
12. A solid-state device according to claim 1, wherein a color filter is located on top of the color conversion layer.
13. A solid-state device according to claim 1, wherein the light-emitting element is a micro LED formed or transferred from a backplane or substrate.
14. As a method for converting the color of a light-emitting element to another color, Step of forming a backplane; A step of forming a light-emitting element on the top of the above backplane; A step of forming a light distribution layer on top of the light-emitting element; A step of forming a color conversion layer on top of the above light distribution layer; and A method comprising the step of converting the color of the light-emitting element to a different color that is different from the original color of the light-emitting element.
15. In claim 14, the method wherein the backplane comprises a circuit for controlling the light-emitting element.
16. In paragraph 14, the method wherein the backplane has a flattening layer on top.
17. In paragraph 14, the method wherein the light-emitting element is located on the top of the reflective layer.
18. In claim 14, a method in which the reflective particles of the light distribution layer are located inside the polymer.
19. In paragraph 18, the method wherein the reflection particle is positioned substantially in the center of the light distribution layer.
20. In paragraph 18, a method in which the concentration of the reflection particles is adjusted so that light is extended toward the edge of the light distribution layer.

Description

Color Conversion Solid State Device The present invention relates to integrating a color conversion layer into a display substrate. More specifically, the present invention relates to providing an encapsulation capsule to protect the color conversion layer from environmental factors. System performance can be improved by integrating various microdevices into a system substrate. However, it presents a challenge that these diverse microdevices may possess different performance characteristics and utilize different material systems. These material systems are generally sensitive to environmental factors (e.g., oxygen or water). Therefore, it is desirable to provide protection for these materials to enhance system performance. According to one embodiment, the present invention relates to a solid-state device capable of converting the color of a light-emitting element to another color, wherein the solid-state device comprises a backplane, a light-emitting element on top of the backplane, a light distribution layer on top of the light-emitting element, and a color conversion layer on top of the light distribution layer. According to another embodiment, a method for converting the color of a light-emitting element to another color is provided, the method comprising the steps of forming a backplane, forming a light-emitting element on top of the backplane, forming a light distribution layer on top of the light-emitting element, forming a color conversion layer on top of the light distribution layer, and converting the color of the light-emitting element to another color different from the original color of the light-emitting element. The foregoing advantages and other advantages of the present disclosure will become apparent when reading the following detailed description and referring to the drawings. FIG. 1 illustrates a flowchart of a method according to one embodiment. FIG. 2 illustrates a flowchart of an alternative method according to one embodiment. FIG. 3 illustrates a flowchart of an alternative method according to one embodiment. FIG. 4 illustrates a flowchart of an alternative method according to one embodiment. FIG. 5 illustrates a flowchart of an alternative method according to one embodiment. FIG. 6 illustrates various embodiments of the present invention. FIGS. 7a to 7c illustrate cross-sectional views showing the integration of a color conversion layer and a microdevice according to one embodiment. FIG. 8a illustrates a cross-sectional view showing the integration of a color conversion layer, a contact part, and a microdevice according to one embodiment. FIG. 8b illustrates a cross-sectional view showing the integration of a color conversion layer, an encapsulation wall, and a microdevice according to one embodiment. FIG. 8c illustrates a cross-sectional view showing the integration of a color conversion layer and a microdevice according to one embodiment. FIG. 8d illustrates a cross-sectional view showing the integration of a color conversion layer and a microdevice according to one embodiment. FIG. 9a illustrates a cross-sectional view showing the integration of a color conversion layer and a microdevice according to one embodiment. FIG. 9b illustrates a cross-sectional view showing the integration of a color conversion layer and a microdevice according to one embodiment. FIGS. 10a and FIGS. 10b illustrate a combination of a light-emitting element and a color conversion layer with a photodistribution layer integrated. Figure 10c illustrates the effective concentration ratio of reflective particles from the surface to the edge of the photoreceptor layer. While the present disclosure allows for various modifications and alternative forms, specific embodiments or embodiments are illustrated in the drawings by way of example and will be described in detail herein. However, it should be understood that the present disclosure is not intended to be limited to the specific forms disclosed herein. Rather, the present disclosure is intended to encompass all modifications, equivalents, and alternatives within the spirit and scope of the invention as defined by the appended claims. One way to improve system performance is to integrate various microdevices onto the system substrate. The challenge lies in the fact that various microdevices can have different performance characteristics and may utilize different material systems. The present invention relates to creating various functional microdevices (e.g., sensors from red, green, and blue LEDs, or a single blue LED) by incorporating function-modulating materials (e.g., a color conversion layer). Function-modulating materials are generally sensitive to environmental factors (e.g., oxygen or water). Another aspect of the present invention is to create a sachet capsule to protect these materials. In the present disclosure, the structure is described using a micro LED and a color conversion layer. However, a similar structure may be used in other microdevices an