US 11,444,134 B2Granted

Light-emitting device, and electronic apparatus

AssigneeSeiko Epson Corporation

InventorsTakeshi Koshihara, Jun Irobe

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Abstract

A light-emitting device includes a semi-transmissive reflection layer, a first reflection layer that is disposed in a first sub-pixel, a first pixel electrode that is disposed in the first sub-pixel, a first color filer that is disposed in the first sub-pixel, a second reflection layer that is disposed in a second sub-pixel, a second pixel electrode that is disposed in the second sub-pixel, a second color filter that is disposed in the second sub-pixel, the second color filter that is same color as the first color filter, a light-emitting functional layer, and an insulating layer that is disposed between the first reflection layer and the first pixel electrode, the light-emitting functional layer that is disposed between the second reflection layer and the second pixel electrode. A thickness of the insulating layer in the second sub-pixel is thicker than a thickness of the insulating layer in the first sub-pixel.

Claims7

Dependent claims

A light-emitting device comprising:

a semi-transmissive reflection layer;
a first reflection layer that is disposed in a first sub-pixel;
a first pixel electrode that is disposed in the first sub-pixel;
a first color filter that is disposed in the first sub-pixel, and that is disposed on an opposite-side of the semi-transmissive reflection layer from the first reflection layer;
a second reflection layer that is disposed in a second sub-pixel;
a second pixel electrode that is disposed in the second sub-pixel;
a second color filter that is disposed in the second sub-pixel, and that is disposed on an opposite-side of the semi-transmissive reflection layer from the second reflection layer, and that is same color as the first color filter;
a light-emitting functional layer that is disposed between the first reflection layer and the semi-transmissive reflection layer, and that is disposed between the second reflection layer and the semi-transmissive reflection layer;
and
an insulating layer that is disposed between the first reflection layer and the first pixel electrode, and that is disposed between the second reflection layer and the second pixel electrode, wherein
the first pixel electrode is disposed between the first reflection layer and the light-emitting functional layer,
the second pixel electrode is disposed between the second reflection layer and the light-emitting functional layer,
a thickness of the insulating layer in the second sub-pixel is thicker than a thickness of the insulating layer in the first sub-pixel,
the insulating layer having a first layer including a first material and a second layer including a second material which is different from the first material, and
a thickness of the first layer in the second sub-pixel is thicker than a thickness of the first layer in the first sub-pixel.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/936,591Filed 23 Jul 2020
Priority: JP JP2019-13592324 Jul 2019
Published: US 2021/0028238 A128 Jan 2021
Granted: 13 Sep 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H10K 59/12
OLED displays: active-matrix OLED [AMOLED] displays
H10K 59/353
Comprising red-green-blue [RGB] subpixels: characterised by the geometrical arrangement of the RGB subpixels
H10K 59/38
Devices specially adapted for multicolour light emission: comprising colour filters or colour changing media [CCM]
H10K 59/876
Arrangements for extracting light from the devices: comprising a resonant cavity structure, e.g. Bragg reflector pair

Family

US 2021/0028238 A1Pre-grant publication · published 28 Jan 2021
US 11,444,134 B2This patent

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

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