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Display device and display unit using the same

A technology for display devices and light-emitting positions, which is applied to lighting devices, electrical components, circuits, etc., can solve problems such as changes in light extraction efficiency, and achieve the effect of improving extraction efficiency.

Inactive Publication Date: 2004-08-25
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in an organic light-emitting device with a resonator structure, the actual light extraction efficiency varies greatly with the position of the maximum light-emitting position of the light-emitting layer in the resonator structure.

Method used

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  • Display device and display unit using the same
  • Display device and display unit using the same
  • Display device and display unit using the same

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0038] figure 1 A cross-sectional view showing a display unit using an organic light emitting device according to a first embodiment of the present invention. This display unit is used as an ultrathin organic light-emitting color display or the like, and in this display unit, for example, a driving board 10 and a sealing board 20 face each other, and the entire facing surfaces thereof are bonded by an adhesive layer 30 together. The driving board 10 includes an organic light-emitting device 10R emitting red light, an organic light-emitting device 10G emitting green light, and an organic light-emitting device 10B emitting blue light. They are integrally arranged on the driving substrate 11 in the form of a matrix. The driving substrate can be formed by, for example, Made of glass or similar insulating material.

[0039] For example, each of the organic light emitting devices 10R, 10G, and 10B may have a structure in which a first electrode 12 serving as an anode, an organic l...

no. 2 example

[0096] Next, a display unit according to a second embodiment of the present invention will be described in detail. According to the second embodiment of the present invention, the display unit includes a Figure 9 The organic light-emitting device 40G of the structure organic layer 43 shown, it replaces the organic light-emitting device 10G in the display unit according to the first embodiment, in addition, the display unit according to the second embodiment of the present invention is the same as the display unit according to figure 1 The shown display unit according to the first embodiment is identical. The display unit according to the second embodiment can be manufactured, operated, and have the same effects as the first embodiment. Accordingly, similar components are denoted with reference numerals similar to those of the first embodiment and will not be further explained.

[0097] The organic light-emitting device 40G is a so-called green phosphorescent device that emi...

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Abstract

Provided are a display device and a display unit having higher light extraction efficiency. An optical distance L1 between a maximum light-emitting position of a light-emitting layer and a first end portion satisfies L1=tL1+a1 and (2tL1) / lambda =- PHI 1 / (2 pi )+m1. An optical distance L2 between the maximum light-emitting position and a second end portion satisfies L2=tL2+a2 and (2tL2) / lambda = - PHI 2 / (2 pi )+m2. In the formulas, tL1 and tL2 represent a theoretical optical distance between the first end portion and the maximum light-emitting position and a theoretical optical distance between the second end portion and the maximum light-emitting position, respectively, ai and a2 represent correction amounts based upon a light-emitting distribution in the light-emitting layer, lambda represents a peak wavelength of the spectrum of light desired to be extracted, PHI 1 and PHI 2 represent a phase shift of reflected light generated in the first end portion and a phase shift of reflected light generated in the second end portion, respectively, and each of mi and m2 is 0 or an integer.

Description

technical field [0001] The present invention relates to a display device and a display unit using the display device, especially a self-luminous display device such as an organic light-emitting device, and a display unit using the self-luminous display device. Background technique [0002] In recent years, organic EL displays using organic light-emitting devices have been the focus of attention as a substitute for liquid crystal displays. Since the organic EL display is a self-luminous display, it is considered to have advantages of wide viewing angle, low power consumption, and appropriate response to high-resolution high-speed video signals. Therefore, organic EL displays are already on the way to commercialization. [0003] Previously, by introducing a resonator structure into an organic light-emitting device, in order to control the light generated in the light-emitting layer, for example, improvement of color purity of emission color, improvement of luminous efficiency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20H10K99/00H05B33/22H05B33/24
CPCH01L27/322H01L51/5265H01L27/3211H10K59/35H10K59/38H10K59/876H05B33/22H10K50/852
Inventor 山田二郎浅井伸利田村真一郎
Owner SONY CORP