Display apparatus
US-2024381702-A1 · Nov 14, 2024 · US
Light-emitting element and light-emitting device
US2025204189A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025204189-A1 |
| Application number | US-202519071777-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 6, 2025 |
| Priority date | Oct 21, 2019 |
| Publication date | Jun 19, 2025 |
| Grant date | — |
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Abstract
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A light-emitting device includes a light-emitting layer that includes, in each of a plurality of pixels: a light-emitting region in which a drive current flows between a first electrode and a second electrode; and a non-light-emitting region in which no drive current flows between the first electrode and the second electrode. The light-emitting region is divided into a plurality of subregions by a non-light-emitting region in a plan view.
First claim
Opening claim text (preview).
1 . A light-emitting element comprising: a first electrode; a second electrode; a light-emitting layer between the first electrode and the second electrode; a first charge transport layer between the light-emitting layer and the first electrode; a second charge transport layer between the light-emitting layer and the second electrode; a plurality of light-emitting regions in which a drive current flows between the first electrode and the second electrode; and at least one non-light-emitting region in which no drive current flows between the first electrode and the second electrode, wherein the non-luminescent region is arranged to be sandwiched by the plurality of light-emitting regions. 2 . The light-emitting element according to claim 1 , further comprising an insulation layer between the first electrode and the second electrode corresponding to the non-light-emitting region. 3 . The light-emitting element according to claim 2 , wherein the insulation layer contains light-scattering particles that scatter light coming from the light-emitting region of the light-emitting layer. 4 . The light-emitting element according to claim 2 , wherein the insulation layer has any one of a stripe-like shape, a lattice-like shape, an elliptical shape, and a comb-like shape in a plan view. 5 . The light-emitting element according to claim 2 , wherein the insulating layer covers an edge of the first electrode. 6 . The light-emitting element according to claim 2 , wherein the insulating layer resides between the light-emitting layer and the first charge transport layer or between the light-emitting layer and the second charge transport layer. 7 . The light-emitting element according to claim 2 , wherein the insulating layer resides between the first electrode and the first charge transport layer or between the second electrode and the second charge transport layer. 8 . The light-emitting element according to claim 1 , wherein at least one of the first electrode and the second electrode is divided into a plurality of segments by a notch corresponding to the non-luminescent regions. 9 . The light-emitting element according to claim 8 , wherein the plurality of segments into which the at least one of the first electrode and the second electrode that is divided by the notch are electrically connected to each other. 10 . The light-emitting element according to claim 8 , wherein the notch in the first electrode has a lattice-like shape in a plan view. 11 . The light-emitting element according to claim 10 , wherein the notch has an intersection with a round corner. 12 . A light-emitting device comprising a plurality of the light-emitting elements according to claim 1 arranged in a matrix. 13 . The light-emitting device according to claim 12 , wherein the second electrode common to the plurality of the light-emitting elements.
Assignees
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Classifications
comprising scattering means · CPC title
Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title
comprising scattering means · CPC title
characterised by the geometrical arrangement of the RGB subpixels · CPC title
characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers · CPC title
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- What does patent US2025204189A1 cover?
- A light-emitting device includes a light-emitting layer that includes, in each of a plurality of pixels: a light-emitting region in which a drive current flows between a first electrode and a second electrode; and a non-light-emitting region in which no drive current flows between the first electrode and the second electrode. The light-emitting region is divided into a plurality of subregions b…
- Who is the assignee on this patent?
- Sharp Kk
- What technology area does this patent fall under?
- Primary CPC classification H10K59/35. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 19 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).