IP Library › Granted Patent US 8,227,796
Granted Patent B2
US 8,227,796 · App. 12/268,501 · Granted Jul 24, 2012

Display device

Assignee: Sony Corporation
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Quick Facts
Patent No.
US 8,227,796
App. No.
12/268,501
Granted
Jul 24, 2012
Kind
B2
Abstract

A display device includes light emitting elements corresponding to respective colors disposed on a substrate. Each of the light emitting elements corresponding to the respective colors has a cavity structure in which a light emission functioning layer including a light emitting layer is held between a reflecting electrode and a semitransmitting electrode. A cavity order of at least the light emitting element adapted to resonate a light, having the shortest wavelength, of the light emitting elements corresponding to the respective colors is 1, and a cavity order of each of other light emitting elements is 0. The light emission functioning layer except for the light emitting layer is common to the light emitting elements corresponding to the respective colors.

Claims (17)

1. A display device comprising:

a substrate; and

a plurality of light emitting elements carried on the substrate, one of the light emitting elements emitting light having a wavelength shorter than those of other lights emitted by other of the light emitting elements,

wherein,

each of the light emitting elements has a cavity structure in which a light emission functioning layer is held between a reflecting electrode and a semitransmitting electrode, the light emission functioning layer including at least one of a respective transporting layer, a respective light emitting layer, a respective adjusting layer, a respective hole transporting layer, and a respective hole injecting layer,

a cavity order of at least the one light emitting element is configured to resonate its light and is 1, and

the light emission functioning layer, except for the respective light emitting layer or the respective light adjusting layer, is common to all of the light emitting elements.

2. The display device according to claim 1 , wherein the plurality of light emitting elements comprising red, blue and green light emitting elements.

3. A display device comprising:

a substrate; and

at least first, second and third light emitting elements carried on the substrate, the first, second and third light emitting elements emitting lights having first, second and third wavelengths, respectively, the first wavelength being shorter than the second wavelength, the second wavelength being shorter than the third wavelength,

wherein,

each of the light emitting elements has a cavity structure in which a light emission functioning layer is held between a reflecting electrode and a semitransmitting electrode, the light emission functioning layer including at least one of a respective transporting layer, a respective light emitting layer, a respective adjusting layer, a respective hole transporting layer, and a respective hole injecting layer,

a cavity order of at least the first light emitting element is configured to resonate its light and is 1, and

the light emission functioning layer, except for the respective light emitting layer or the respective light adjusting layer, is common to all of the light emitting elements.

4. The display device of claim 3 , wherein the cavity order of at least one of the second light emitting element and the third light emitting is 1.

5. The display device of claim 4 , wherein the respective light adjusting layer is a common layer between the at least two of the first, second and third light emitting elements.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 11, 2008
From: ASAKI, REO; YAMADA, JIRO
To: SONY CORPORATION
Reel/Frame 021813/0710 →
Priority Claims (1)
JP 2007-293814 · Nov 13, 2007 · national
Continuity (1)
Related Publication 20090121239A1 · May 14, 2009