US 11,081,621 B2Granted

Display panel

AssigneeChengdu Vistar Optoelectronics Co., Ltd.

InventorsHuashan Chen, Xiaolong Yang, Rubo Xing, Dong Wei, Jiantai Wang

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Abstract

The present disclosure provides a display panel including a substrate; and a plurality of pixel units arranged on the substrate; wherein each of the plurality of pixel units includes a plurality of sub-pixel units including at least one first type of sub-pixel unit; each of the plurality of sub-pixel units includes a light emitting layer; the at least one first type of sub-pixel unit includes a first light processing layer; the first light processing layer includes at least a light diffusion material and a light conversion material mixed with each other; and the first light processing layer is located on a side of a light emitting surface of the light emitting layer at the at least one first type of sub-pixel unit. By the above-mentioned manner, the uniformity of light conversion by the light emitting layer may be improved, thereby the display effect of the display panel may be improved.

Claims18

Dependent claims

A display panel comprising:

a substrate;
and
a plurality of pixel units arranged on the substrate;
wherein each of the plurality of pixel units comprises a plurality of sub-pixel units comprising at least one first type of sub-pixel unit;
each of the plurality of sub-pixel units comprises a light emitting layer;
the at least one first type of sub-pixel unit comprises a first light processing layer;
the first light processing layer comprises at least a light diffusion material and a light conversion material mixed with each other;
and the first light processing layer is located on a side of a light emitting surface of the light emitting layer at the at least one first type of sub-pixel unit,
wherein the plurality of sub-pixel units further comprises at least one second type of sub-pixel unit;
the at least one second type of sub-pixel unit comprises a second light processing layer without a light conversion function;
and the second light processing layer is located on a side of a light emitting surface of the light emitting layer at the at least one second type of sub-pixel unit,
wherein the at least one first type of sub-pixel unit comprises a first sub-pixel unit and a second sub-pixel unit;
a first light conversion material in the first sub-pixel unit is a first quantum dot material emitting a first light converted color, a second light conversion material in the second sub-pixel unit is a second quantum dot material emitting a second light converted color;
a color of light emitted by the light emitting layer is different from the first light converted color and the second light converted color;
the at least one second type of sub-pixel unit comprises a third sub-pixel unit;
and a color of light emitted by the third sub-pixel unit is the color of light emitted by the light emitting layer,
wherein the first light converted color is red, the second light converted color is green, and the first quantum dot material is less in quantity than the second quantum dot material.

14 more elements

A display panel, comprising:

a substrate;
and
a pixel unit arranged on the substrate and comprising:
a first type of sub-pixel unit comprising:
a first light emitting layer arranged on the substrate;
a first light processing layer arranged on the first light emitting layer and comprising:
a first transparent matrix;
a first light diffusion material doped in the first transparent matrix;
and
a light conversion material doped in the first transparent matrix;
a second type of sub-pixel unit comprising:
a second light emitting layer arranged on the substrate;
a second light processing layer arranged on the second light emitting layer and comprising:
a second transparent matrix;
wherein the first light diffusion material and the light conversion material are mixed with each other;
and a surface of the first light processing layer away from the substrate and a surface of the second light processing layer away from the substrate, are aligned,
wherein the second light processing layer is located on a side of a light emitting surface of the light emitting layer at the second type of sub-pixel unit,
wherein the first type of sub-pixel unit comprises a first sub-pixel unit and a second sub-pixel unit;
a first light conversion material in the first sub-pixel unit is a first quantum dot material emitting a first light converted color, a second light conversion material in the second sub-pixel unit is a second quantum dot material emitting a second light converted color;
a color of light emitted by the light emitting layer is different from the first light converted color and the second light converted color;
the second type of sub-pixel unit comprises a third sub-pixel unit and a color of light emitted by the third sub-pixel unit is the color of light emitted by the light emitting layer,
wherein the first light converted color is red, the second light converted color is green, and the first quantum dot material is less in quantity than the second quantum dot material.

19 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/773,229Filed 27 Jan 2020 · continuation
Priority: CN 201811013578.531 Aug 2018
Published: US 2020/0161503 A121 May 2020
Granted: 3 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

H10H 20/8511
Wavelength conversion means: characterised by their material, e.g. binder
H10D 86/40
Integrated devices formed in or on insulating or conducting substrates, e.g. formed in silicon-on-insulator [SOI] substrates or on stainless…
H10D 86/60
Characterised by multiple TFTs: wherein the TFTs are in active matrices
H10H 20/812
Having quantum effect structures or superlattices, e.g. tunnel junctions: within the light-emitting regions, e.g. having quantum confinement…