US 10,872,929 B2Granted

Electroluminescent display and display device

AssigneeBoe Technology Group Co., Ltd.

InventorsGuang Yan, Changyen Wu

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Abstract

The present invention discloses an electroluminescent display and a display device, the electroluminescent display comprising a base substrate and a plurality of pixel units arranged in arrays on the base substrate. Each pixel unit is composed of at least four subpixel units, and each pixel unit comprises at least three luminescent material layers. Each luminescent material layer at least covers two adjacent subpixel units, and only one luminescent material layer in each subpixel unit emits light. Since each luminescent material layer at least covers two adjacent subpixel units, when a luminescent material is evaporated and coated by an evaporation coating process, the subpixel units can be made smaller with the size of the mask plate unchanged, which is helpful for improving the resolution of the display.

Claims17

Dependent claims

An electroluminescent display comprising a base substrate and a plurality of pixel units arranged in arrays on the base substrate, each of the pixel units being composed of at least four subpixel units, and each of the pixel units comprising at least three luminescent material layers,

wherein each of the luminescent material layers at least covers two adjacent subpixel units,
wherein the at least three luminescent material layers comprises a first luminescent material layer, a second luminescent material layer and a third luminescent material layer, the second luminescent material layer and the third luminescent material layer are arranged in a same layer, the first luminescent material layer is arranged in a different layer from the second luminescent material layer and the third luminescent material layer, the first luminescent material layer overlaps with the second luminescent material layer and the third luminescent material layer in an overlapping section.
wherein each of the pixel units further comprises a carrier or exciton blocking layer disposed between the first luminescent material layer and the second luminescent material layer and between the first luminescent material layer and the third luminescent material layer along a direction perpendicular to the base substrate, an orthographic projection of the carrier or exciton blocking layer on the base substrate coincides with an orthographic projection of the overlapping section on the base substrate.

Dependencies are inferred from the claim text.

Facts

Application: 16/123,312Filed 6 Sep 2018 · division
Priority: CN 2015 1 01517481 Apr 2015
Published: US 2019/0006432 A13 Jan 2019
Granted: 22 Dec 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H10K 59/30
Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00: devices…
H10K 50/125
Characterised by the electroluminescent [EL] layers: specially adapted for multicolour light emission, e.g. for emitting white light
H10K 59/351
Comprising red-green-blue [RGB] subpixels: comprising more than three subpixels, e.g. red-green-blue-white [RGBW]
H10K 71/164
Using physical vapour deposition [PVD], e.g. vacuum deposition or sputtering: using vacuum deposition

Family

PCT/CN2015/086453Parent of this division · filed 10 Aug 2015
US 2019/0006432 A1Pre-grant publication · published 3 Jan 2019
Application14/913,334Parent of this division
US 2017/0040388 A1Published application
US 10,872,929 B2This patent

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

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