US 11,309,360 B2Granted

Color conversion substrate and display device

AssigneeSamsung Display Co., Ltd.

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

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Abstract

A color conversion substrate includes a base on which first to third light outputting regions and a light shielding region surrounding the first to third light outputting regions are defined; first to third color filters on the base in the first to third light outputting regions, respectively; a first light shielding member on the first color filter in the light shielding region; a light transmission pattern on the first color filter; a first wavelength conversion pattern on the second color filter and which converts light of a first color into light of a second color; and a second wavelength conversion pattern on the third color filter and which converts the light of the first color into light of a third color. A first opening located in the light shielding region is defined in at least one of the light transmission pattern and the first and second wavelength conversion patterns.

Claims19

Dependent claims

A color conversion substrate comprising:

a base on which a first light outputting region, a second light outputting region and a third light outputting region sequentially disposed to be spaced apart from each other along a first direction, and a light shielding region surrounding each of the first to third light outputting regions are defined;
a first color filter disposed on the base and disposed in the first light outputting region and the light shielding region;
a second color filter disposed on the base and disposed in the second light outputting region;
a third color filter disposed on the base and disposed in the third light outputting region;
a first light shielding member disposed on the first color filter and disposed in the light shielding region;
a light transmission pattern disposed on the first color filter;
a first wavelength conversion pattern disposed on the second color filter, wherein the first wavelength conversion pattern converts light of a first color into light of a second color;
a second wavelength conversion pattern disposed on the third color filter, wherein the second wavelength conversion pattern converts the light of the first color into light of a third color, which is different from the second color, and
a capping layer disposed between the first color filter and the light transmission pattern and between the second color filter and the first wavelength conversion pattern
wherein the light transmission pattern, the first wavelength conversion pattern and the second wavelength conversion pattern are spaced apart from each other,
a first opening is formed as a through hole through an entire thickness defining at least one of the light transmission pattern, the first wavelength conversion pattern and the second wavelength conversion pattern,
the first opening is located in the light shielding region the first opening exposes the capping layer.

9 more elements

A display device comprising:

a first base on which a first light emitting region and a second light emitting region are defined;
a first light emitting element disposed on the first base and disposed in the first light emitting region;
a second light emitting element disposed on the first base and disposed in the second light emitting region;
a thin-film encapsulation layer disposed on the first light emitting element and the second light emitting element;
a second base disposed on the thin-film encapsulation layer, wherein a first light outputting region overlapping the first light emitting region, a second light outputting region overlapping the second light emitting region and a light shielding region surrounding each of the first and second light outputting regions are defined on the second base;
a blue color filter disposed on a surface of the second base facing the thin-film encapsulation layer and disposed in the first light outputting region and the light shielding region;
a green color filter disposed on the surface of the second base and disposed in the second light outputting region;
a light shielding member disposed on the blue color filter and disposed in the light shielding region;
a light transmission pattern disposed on the blue color filter;
a wavelength conversion pattern disposed on the green color filter;
and
a capping layer disposed between the blue color filter and the light transmission pattern and between the green color filter and the wavelength conversion pattern,
wherein the light transmission pattern and the wavelength conversion pattern are spaced apart from each other,
a first opening is formed in at least one of the light transmission pattern and the wavelength conversion pattern,
the first opening is located in the light shielding region, and the first opening exposes the capping layer.

12 more elements

A display device comprising:

a base on which a first light emitting region and a second light emitting region are defined;
a first light emitting element disposed on the base and disposed in the first light emitting region;
a second light emitting element disposed on the base and disposed in the second light emitting region;
a thin-film encapsulation layer disposed on the first light emitting element and the second light emitting element;
a light shielding member disposed on the thin-film encapsulation layer and disposed along a boundary of each of the first light emitting region and the second light emitting region;
a light transmission pattern disposed on the thin-film encapsulation layer, wherein the light transmission pattern overlaps the first light emitting region in a plan view;
a wavelength conversion pattern disposed on the thin-film encapsulation layer, where in the wavelength conversion pattern overlaps the second light emitting region in the plan view;
a blue color filter disposed on the light transmission pattern;
a green color filter disposed on the wavelength conversion pattern, and
a capping layer disposed between the blue color filter and the light transmission pattern and between the green color filter and the wavelength conversion pattern,
wherein the light transmission pattern and the wavelength conversion pattern are spaced apart from each other,
a first opening is formed in at least one of the light transmission pattern and the wavelength conversion pattern,
the first opening overlaps the light shielding member in the plan view, and the first opening exposes the capping layer.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/591,760Filed 3 Oct 2019
Priority: KR 10-2019-00145737 Feb 2019
Published: US 2020/0258945 A113 Aug 2020
Granted: 19 Apr 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H10K 59/38
Devices specially adapted for multicolour light emission: comprising colour filters or colour changing media [CCM]
H10D 30/6723
Having supplementary regions or layers in the thin films or in the insulated bulk substrates for controlling properties of the device: having…
H10K 50/115
Characterised by the electroluminescent [EL] layers: comprising active inorganic nanostructures, e.g. luminescent quantum dots
H10K 59/126
Active-matrix OLED [AMOLED] displays: shielding, e.g. light-blocking means over the TFTs

Family

US 2020/0258945 A1Pre-grant publication · published 13 Aug 2020
US 11,309,360 B2This patent

From the US filing history. Foreign family members aren’t listed.

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