DISPLAY DEVICE

• US 20090121239A1
• Filed: 11/11/2008
• Published: 05/14/2009
• Est. Priority Date: 11/13/2007
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Yamada, Jiro, Asaki, Reo
• Granted Patent: US 8,227,796 B2
• Time in Patent Office: Days
• US Class Current: 257/89
• CPC Class Codes: H10K 50/852 comprising a resonant cavity structure, e.g. Bragg reflector pair
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels

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

1. A display device comprising

light emitting elements corresponding to respective colors disposed on a substrate, wherein

each of said 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 said light emitting element adapted to resonate a light, having the shortest wavelength, of said light emitting elements corresponding to the respective colors is 1, and a cavity order of each of other light emitting elements is 0, and

said light emission functioning layer except for said light emitting layer is common to said light emitting elements corresponding to the respective colors.

2. The display device according to claim 1,

wherein said light emitting elements corresponding to the respective colors are a red light emitting element, a green light emitting element, and a blue light emitting element.

3. The display device according to claim 1,

wherein an adjusting layer, for adjusting a optical cavity thickness, composed of any of layers constituting said light emission functioning layer is provided in a part of said light emitting elements.