Color transformation substrate and display device

Patent metadata

Field	Value
Publication number	US-2022085114-A1
Application number	US-201917419982-A
Country	US
Kind code	A1
Filing date	Mar 13, 2019
Priority date	Dec 31, 2018
Publication date	Mar 17, 2022
Grant date	—

Abstract

A color transformation substrate comprises: a base portion having first and second light-blocking areas and first to third light-transmitting areas, where the light-transmitting areas are successively positioned along a first direction; first to third color filters positioned in the first to third light-transmitting areas, respectively; a light-blocking member positioned in the first light-blocking area, and including part contacting the base portion; a color pattern positioned in the second light-blocking area so as to contact the base portion; a first wavelength conversion pattern positioned on the second color filter so as to wavelength-convert light having a first color into light having a second color; and a second wavelength conversion pattern positioned on the third color filter so as to wavelength-convert light having the first color into light having a third color different from light having the second color. The color pattern and the first color filter comprise the same color material.

First claim

1 . A color conversion substrate comprising:
a base portion in which a first light-blocking area, a second light-blocking area, a first light-transmitting area, a second light-transmitting area, and a third light-transmitting area are defined, wherein the first light-transmitting area, the second light-transmitting area, and the third light-transmitting area are sequentially disposed along a first direction; a first color filter disposed on the base portion and disposed in the first light-transmitting area; a second color filter disposed on the base portion and disposed in the second light-transmitting area; a third color filter disposed on the base portion and disposed in the third light-transmitting area; a light-blocking member including a first light-blocking member which is disposed on the base portion, disposed in the first light-blocking area, and includes a portion in contact with the base portion; a color pattern including a first color pattern which is disposed on the base portion, disposed in the second light-blocking area, and in contact with the base portion; a first wavelength conversion pattern disposed on the second color filter and which wavelength-converts light of a first color into light of a second color; and a second wavelength conversion pattern disposed on the third color filter and which wavelength-converts the light of the first color into light of a third color, wherein the light of the third color is different from the light of the second color, wherein the color pattern and the first color filter include a same colorant.

2 . The color conversion substrate of claim 1 , wherein
the first light-blocking area is disposed between the first light-transmitting area and the second light-transmitting area which are arranged along the first direction, and the second light-blocking area is disposed between the second light-transmitting area and the third light-transmitting area which are arranged along the first direction.

3 . The color conversion substrate of claim 2 , wherein
the first color filter transmits the light of the first color and blocks the light of the second color and the light of the third color, the second color filter transmits the light of the second color and blocks the light of the first color and the light of the third color, and the third color filter transmits the light of the third color and blocks the light of the first color and the light of the second color.

4 . The color conversion substrate of claim 2 , wherein the light-blocking member further includes a second light-blocking member which is disposed in the second light-blocking area and is disposed on the color pattern in the second light-blocking area.

5 . The color conversion substrate of claim 4 , wherein the second light-blocking member is not in direct contact with the base portion in the second light-blocking area.

6 . The color conversion substrate of claim 2 , wherein the light-blocking member further includes a third light-blocking member which is in contact with the base portion,
wherein the light-blocking member completely surrounds the first light-transmitting area in a plan view.

7 . The color conversion substrate of claim 2 , wherein
the color pattern further includes a second color pattern which is disposed in the first light-blocking area and is in contact with the base portion in the first light-blocking area, a portion of the first light-blocking member in the first light-blocking area is disposed on the second color pattern, and another portion of the first light-blocking member in the first light-blocking area is in direct contact with the base portion.

8 . The color conversion substrate of claim 7 , wherein, a first contact area, in which the first light-blocking member is in contact with the base portion in the first light-blocking area, is disposed relatively closer to the first light-transmitting area than a second contact area in which the second color pattern is in contact with the base portion in the first light-blocking area.

9 . The color conversion substrate of claim 7 , wherein a first contact area, in which the first light-blocking member is in contact with the base portion in the first light-blocking area, is disposed in an areas of the first light-blocking area 1) between a second contact area, in which the second color pattern is in contact with the base portion, and the first light-transmitting area and 2) between the second contact area and the second light-transmitting area.

10 . The color conversion substrate of claim 7 , wherein
the light-blocking member is-further includes a second light-blocking member which is disposed in the second light-blocking area, a portion of the second light-blocking member in the second light-blocking area is disposed on the first color pattern, and another portion of the second light-blocking member in the second light-blocking area is in direct contact with the base portion.

11 . The color conversion substrate of claim 10 , wherein a first contact area, in which the another portion of the second light-blocking member is in direct contact with the base portion in the second light-blocking area, is disposed in areas of the second light-blocking area 1) between a second contact area, in which the first color pattern is in contact with the base portion, and the second light-transmitting area and 2) between the second contact area and the third light-transmitting area.

12 . The color conversion substrate of claim 1 , wherein
the first light-blocking area is disposed adjacent to the first light-transmitting area and extends along a second direction intersecting the first direction, and the second light-blocking area is disposed between the second light-transmitting area and the third light-transmitting area and extends along the second direction.

13 . The color conversion substrate of claim 1 , further comprising a light-transmitting pattern disposed on the first color filter, wherein the light-transmitting pattern includes a base resin and a scatterer disposed in the base resin.

14 . The color conversion substrate of claim 13 , further comprising a first capping layer disposed on the base portion and covering the first color filter, the second color filter, the third color filter, the light-blocking member, and the color pattern,
wherein the first capping layer is made of an inorganic material, and the light-transmitting pattern, the first wavelength conversion pattern, and the second wavelength conversion pattern are disposed on the first capping layer.

15 . The color conversion substrate of claim 14 , wherein the first capping layer is in direct contact with the light-blocking member.

16 . The color conversion substrate of claim 14 , further comprising:
a second capping layer disposed on the first capping layer and covering the light-transmitting pattern, the first wavelength conversion pattern, and the second wavelength conversion pattern; and a color mixing preventing member disposed on the second capping layer and disposed between the light-transmitting pattern and the first wavelength conversion pattern and between the first wavelength conversion pattern and the second wavelength conversion pattern.

17 . A display device comprising:
a first base portion in which a first light-emitting area and a second light-emitting area are defined; a first light-emitting element disposed on the first base portion and disposed in the first light-emitting area; a second light-emitting element disposed on the first base portion and disposed in the second light-emitting a

Assignees

• Samsung Display Co Ltd

Inventors

• Seong Jae Min
• Oh Keun Chan
• Lee Gak Seok
• Joo Sun Kyu
• Kim Byung Chul
• Kim In Ok
• Song In Seok
• Jang Ji Eun
• Jang Chang Soon

Classifications

• H10K59/8792

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

• H10K59/877

  comprising scattering means · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/38 Primary

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