Color control member and display device employing the same

Patent metadata

Field	Value
Publication number	US-11088216-B2
Application number	US-202016737481-A
Country	US
Kind code	B2
Filing date	Jan 8, 2020
Priority date	Apr 23, 2019
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

A color control member includes a substrate including a first pixel area and a second pixel area; a first color conversion layer converting incident light on the first color conversion layer to light of a first color, the light of the first color being emitted from the first color conversion layer and through the first pixel area; a second color conversion layer converting incident light on the second color conversion layer to light of a second color, the light of the second color being emitted through the second color conversion layer and through the second pixel area; and a partition wall disposed between the first color conversion layer and the second color conversion layer to correspond to a light-blocking area of the substrate in which the light emitted from the first color conversion layer or the second color conversion layer is blocked from being emitted to the other thereof.

First claim

What is claimed is:

1. A color control member, comprising:
a substrate including a plurality of pixel areas including a first pixel area and a second pixel area;
a first color conversion layer converting incident light on the first color conversion layer to light of a first color, the light of the first color being emitted from the first color conversion layer and through the first pixel area;
a second color conversion layer converting incident light on the second color conversion layer to light of a second color, the light of the second color being emitted from the second color conversion layer and through the second pixel area;
a partition wall disposed in a light-blocking area of the substrate, between the first color conversion layer and the second color conversion layer and defining an air gap corresponding to the light-blocking area of the substrate;
a first color filter layer disposed between the substrate and the first color conversion layer and selectively transmitting the light of the first color emitted from the first color conversion layer;
a second color filter layer disposed between the substrate and the second color conversion layer and selectively transmitting the light of the second color emitted from the second color conversion layer; and
a transmission layer disposed on a third pixel area apart from the first pixel area and the second pixel area and transmitting incident light thereon, wherein
the partition wall is disposed between the transmission layer and the first color conversion layer, and between the transmission layer and the second color conversion layer,
the partition wall includes an interface layer including a first portion and a second portion, the first portion being inclined with respect to the substrate by a predetermined angle, and the second portion being connected to the first portion and spaced apart from the substrate by a predetermined interval in a vertical direction, and
the second portion of the interface layer includes a through hole.

2. The color control member of claim 1 , wherein the interface layer further includes a third portion disposed in the plurality of pixel areas of the substrate and connected to the first portion opposite the connection of the second portion to the first portion.

3. The color control member of claim 1 , wherein the partition wall further includes a reflective layer disposed on at least one of the first portion and the second portion of the interface layer.

4. The color control member of claim 3 , wherein the second portion of the interface layer includes a first through hole, and
the reflective layer includes a second through hole disposed to overlap the first through hole of the interface layer.

5. The color control member of claim 1 , further comprising:
a light-blocking member disposed between the substrate and the partition wall, and in the air gap.

6. A display device comprising:
a first substrate including a plurality of pixel areas including a first pixel area and a second pixel area;
a first color conversion layer converting incident light on the first color conversion layer to light of a first color, the light of the first color being emitted from the first color conversion layer and through the first pixel area;
a second color conversion layer converting incident light on the second color conversion layer to light of a second color, the light of the second color being emitted from the second color conversion layer and through the second pixel area;
a partition wall disposed in a light-blocking area of the substrate, between the first color conversion layer and the second color conversion layer, and defining an air gap corresponding to the light-blocking area of the first substrate;
a second substrate facing the first substrate;
a plurality of display elements disposed on the second substrate and including a first display element and a second display element emitting the incident light respectively on the first color conversion layer and the second color conversion layer;
a first color filter layer disposed between the first substrate and the first color conversion layer and selectively transmitting the light of the first color emitted from the first color conversion layer;
a second color filter layer disposed between the first substrate and the second color conversion layer and selectively transmitting the light of the second color emitted from the second color conversion layer; and
a transmission layer disposed on a third pixel area apart from the first pixel area and the second pixel area and transmitting incident light thereon, wherein
the partition wall is disposed between the transmission layer and the first color conversion layer, and between the transmission layer and the second color conversion layer,
the partition wall includes an interface layer including a first portion and a second portion, the first portion being inclined with respect to the first substrate by a predetermined angle, and the second portion being connected to the first portion and spaced apart from the first substrate by a predetermined interval in a vertical direction, and
the second portion of the interface layer includes a through hole.

7. The display device of claim 6 , wherein the interface layer further includes a third portion disposed in the plurality of pixel areas of the first substrate and connected to the first portion opposite the connection of the second portion to the first portion.

8. The display device of claim 6 , wherein the partition wall further includes a reflective layer disposed on at least one of the first portion and the second portion of the interface layer.

9. The display device of claim 8 , wherein the second portion of the interface layer includes a first through hole, and
the reflective layer includes a second through hole disposed to overlap the first through hole of the interface layer.

10. The display device of claim 6 , further comprising:
a light-blocking member disposed between the first substrate and the partition wall, and in the air gap.

11. A display device, comprising:
a substrate;
a first display element and a second display element disposed on the substrate, and each emitting light;
a pixel-defining layer disposed on the substrate, and around the first display element and the second display element;
a first color conversion layer disposed on the first display element, and converting light emitted from the first display element to light of a first color, the light of the first color being emitted from the first color conversion layer;
a second color conversion layer disposed on the second display element, and converting light emitted from the second display element to light of a second color, the light of the second color being emitted from the second color conversion layer;
a partition wall disposed on the pixel-defining layer, between the first color conversion layer and the second color conversion layer, and defining an air gap locating on the pixel-defining layer;
a first color filter layer disposed on the first color conversion layer and selectively transmitting the light of the first color emitted from the first color conversion layer; and
a second color filter layer disposed on the second color conversion layer and selectively transmitting the light of the second color emitted from the second color conversion layer;
an encapsulation member disposed between the first display element and the second display element of the plurality of display elements and the first color conversion layer and the second color conversion layer, and to cover at least the first display element and the second display element of the plurality of display elements and the pi

Assignees

• Samsung Display Co Ltd

Inventors

• Bae Kwangsoo
• Park Beomsoo
• Oh Minjeong
• Cho Youngje

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/878

  comprising reflective means · CPC title

• H10K59/877

  comprising scattering means · CPC title

• H10K50/844

  Encapsulations · CPC title

• H10K59/38 Primary

  comprising colour filters or colour changing media [CCM] · CPC title