Display device, display apparatus and method of adjusting a color shift of white light in same
A technology of a display device and a display device, which is applied in the field of white light color shift, can solve problems such as increased viewing angle dependence, reduced luminous intensity, and large change in light wavelength, to achieve good light extraction efficiency and improve the effect of viewing angle dependence
Inactive Publication Date: 2012-11-21
SONY CORP
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
On the other hand, in an organic EL display having a resonant cavity structure, when the peak spectral width of the extracted light is narrowed, the viewing angle dependence increases
For example, when the light-emitting surface is viewed from an oblique direction, the wavelength of light changes greatly and the luminous intensity decreases
Method used
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no. 1 approach
[0033] 1. First Embodiment (first example of organic EL device);
no. 2 approach
[0034] 2. Second Embodiment (Second Example of Organic EL Device);
no. 3 approach
[0035] 3. The third embodiment (the third example of the organic EL device);
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The invention discloses a display device, a display apparatus and a method of adjusting a color shift of white light in same. The display device includes: an optical cavity portion; and a light emitting layer, wherein a peak wavelength of an internal emission spectrum of the light emitting layer is identical to a peak wavelength of a multiple interference filter spectrum of the optical cavity portion, and wherein a color shift [Delta] uv of white light in the display device at a viewing angle of 60 DEG is less than or equal to 0.015. A method of adjusting a color shift of white light in a display device includes: setting a peak wavelength of a multiple interference filter spectrum obtained by an optical cavity portion in the display device equal to a peak wavelength of an internal emission spectrum of a light emitting layer in the display device; and adjusting a position of the light emitting layer in a thickness direction thereof.
Description
[0001] References to related applications [0002] This application claims priority from Japanese Priority Patent Application No. JP 2009-142046 filed with the Japan Patent Office on June 15, 2009, the entire contents of which are hereby incorporated by reference. Background technique [0003] The present application relates to display devices, display devices and methods of adjusting the color shift of white light in them. More specifically, the present invention relates to a display device (such as an organic EL device) having an optical cavity structure and a display device (such as an organic EL display) using the display device. [0004] In recent years, an organic EL display using an organic EL (Electroluminescence) device has been noticed as one of display devices replacing a liquid crystal display. The organic EL display is a self-luminous type display in which an organic material itself emits light when an electric current flows. Therefore, the organic EL display ha...
Claims
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IPC IPC(8): H01L51/50H01L51/52H01L51/56G09F9/33
CPCH01L51/5036H01L51/5265H01L27/3211H10K59/35H10K50/125H10K59/876H10K50/852
Inventor 福田俊广
Owner SONY CORP