IP Library Granted Patent US 11,871,611
Granted Patent B2
US 11,871,611 · App. 17/988,124 · Granted Jan 9, 2024

Display unit with reflector layer and electronic apparatus

Inventor: Daisuke Ueda (Tokyo, JP)
Assignee: Sony Corporation
H10K50/856H10K50/824H10K59/122H10K71/00H10K59/38
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Quick Facts
Patent No.
US 11,871,611
App. No.
17/988,124
Granted
Jan 9, 2024
Kind
B2
Abstract

A display unit includes a plurality of pixels, a reflector layer, and an auxiliary electrode. Each of the plurality of pixels has a first electrode, an organic layer, and a second electrode in this order. The organic layer and the second electrode are provided on the first electrode. The organic layer includes a light-emitting layer. The reflector layer has a light-reflecting surface around each of the pixels. The auxiliary electrode is provided on the reflector layer and is projected from an upper end of the light-reflecting surface. The auxiliary electrode has a portion which is exposed from the organic layer, and the exposed portion is covered with the second electrode.

Claims (23)

1. A display unit comprising:

a plurality of pixels each having a first electrode, an organic layer, and a second electrode in this order, the organic layer and the second electrode being provided on the first electrode, the organic layer including a light-emitting layer;

a reflector layer having a light-reflecting surface around each of the pixels; and

an auxiliary electrode that is provided on the reflector layer and is projected from an upper end of the light-reflecting surface, the auxiliary electrode having a portion which is exposed from the organic layer, the exposed portion being covered with the second electrode,

wherein

the reflector layer has a plurality of recesses each having the light-reflecting surface, the plurality of recesses facing the respective pixels,

the auxiliary electrode has a plurality of apertures that face the respective recesses, and

an aperture shape of each of the apertures in the auxiliary electrode is smaller than a shape of each of the recesses on upper end side in a plan view.

2. The display unit according to claim 1 , wherein the shape of each of the recesses is substantially similar to the aperture shape of each of the apertures.

3. The display unit according to claim 2 , wherein the aperture shape of each of the apertures is smaller than the shape of each of the recesses.

4. The display unit according to claim 1 , further comprising another organic layer that is provided on the auxiliary electrode and contains a material same as a material of the organic layer.

5. The display unit according to claim 1 , wherein the reflector layer contains silicon oxide (SiO x ), magnesium fluoride (MgF 2 ), lithium fluoride (LiF), a polyimide resin, an acrylic resin, a fluorine resin, a silicone resin, a fluorine-based polymer, or a silicon-based polymer.

6. The display unit according to claim 1 , wherein the auxiliary electrode contains one or more of titanium (Ti), molybdenum (Mo), copper (Cu), and aluminum (Al).

7. The display unit according to claim 1 , wherein the auxiliary electrode contains one or more of indium-tin oxide (ITO), titanium oxide (TiO), indium-zinc oxide (IZO), indium-gallium-zinc oxide (IGZO), zinc oxide (ZnO), aluminum-added zinc oxide (AZO), fluorine (F)-added zinc oxide (ZnO:F), fluorine-added tin oxide (FTO), and fluorine-added silicon oxide (SiO 2 :F).

8. The display unit according to claim 1 , wherein the light-emitting layer included in the organic layer comprises a single light-emitting layer or a plurality of stacked light-emitting layers.

9. An electronic apparatus including a display unit, the display unit comprising:

a plurality of pixels each having a first electrode, an organic layer, and a second electrode in this order, the organic layer and the second electrode being provided on the first electrode, the organic layer including a light-emitting layer;

a reflector layer having a light-reflecting surface around each of the pixels; and

an auxiliary electrode that is provided on the reflector layer and is projected from an upper end of the light-reflecting surface, the auxiliary electrode having a portion which is exposed from the organic layer, the exposed portion being covered with the second electrode,

wherein

the reflector layer has a plurality of recesses each having the light-reflecting surface, the plurality of recesses facing the respective pixels,

the auxiliary electrode has a plurality of apertures that face the respective recesses, and

an aperture shape of each of the apertures in the auxiliary electrode is smaller than a shape of each of the recesses on upper end side in a plan view.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 16, 2022
From: UEDA, DAISUKE
To: SONY CORPORATION
Reel/Frame 061954/0409 →
Priority Claims (1)
JP 2014-208116 · Oct 9, 2014 · national
Continuity (5)
Continuation 17038855 · Sep 30, 2020
Continuation 16682135 · Nov 13, 2019
Continuation 16369307 · Mar 29, 2019
Continuation 15512572
Related Publication 20230083513A1 · Mar 16, 2023