Display apparatus

• US 20070145350A1
• Filed: 12/05/2006
• Published: 06/28/2007
• Est. Priority Date: 12/06/2005
• Status: Active Grant

• Current Assignee: JDI Design and Development GK
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Kobori, Isamu
• Granted Patent: US 7,531,856 B2
• Time in Patent Office: Days
• US Class Current: 257/13
• CPC Class Codes: H10K 2102/351 Thickness
• CPC Class Codes: H10K 50/85 Arrangements for extracting light from the devices
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/878 comprising reflective means

Abstract

A display apparatus that includes: a plurality of light-emitting devices disposed on a substrate with an accumulation of, in this or inverse order, a light transmissive electrode layer, a functional layer including a light-emitting layer, and an opposing electrode layer; and a color conversion layer that is provided on a side of the light transmissive electrode layer for any of the light-emitting devices, and applies color conversion to an emitted light generated by the light-emitting layer for the light-emitting device. In the display apparatus, the light-emitting devices each have a reflective surface on a position where the light-emitting layer is sandwiched with the light transmissive electrode layer, and an optical distance between the reflective surface and the light-emitting layer varies by the light-emitting devices depending on provision of the color conversion layer.

Claims

1. A display apparatus, comprising:

a plurality of light-emitting devices disposed on a substrate with an accumulation of, in this or inverse order, a light transmissive electrode layer, a functional layer including a light-emitting layer, and an opposing electrode layer; and

a color conversion layer that is provided on a side of the light transmissive electrode layer for any of the light-emitting devices, and applies color conversion to an emitted light generated by the light-emitting layer for the light-emitting device, wherein

the light-emitting devices each have a reflective surface on a position where the light-emitting layer is sandwiched with the light transmissive electrode layer, and

an optical distance between the reflective surface and the light-emitting layer varies by the light-emitting devices depending on provision of the color conversion layer.

2. The display apparatus according to claim 1, wherein

the optical distance for any of the light-emitting devices not provided with the color conversion layer is set to a value with which interference occurs to the emitted light generated by the light-emitting layer of the light-emitting device, and

the optical distance for any of the light-emitting devices provided with the color conversion layer is set to a value with which a light of a predetermined wavelength as a result of conversion by the color conversion layer is extracted with the highest level of intensity.

3. The display apparatus according to claim 1, wherein

a transparent electrode layer having a thickness for adjusting the optical distance is provided between the reflective surface and the functional layer, and

the functional layer is provided as a common layer for use among the light-emitting devices.

4. The display apparatus according to claim 1, wherein

an intermediate layer is provided between the opposing electrode layer and the light transmissive electrode layer for electrically connecting the functional layer plurally in series.