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Organic light emitting display

A technology of light-emitting display and organic light-emitting layer, which is applied in the field of organic light-emitting display devices, can solve problems such as deterioration of light-emitting characteristics and reduced lifespan, and achieve the effects of suppressing the reduction of light-emitting efficiency, prolonging lifespan, and high reliability

Inactive Publication Date: 2007-01-24
HITACHI DISPLAYS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The material of the organic light-emitting layer OLE constituting the light-emitting mechanism often deteriorates the light-emitting characteristics due to heat, and the lifespan is shortened

Method used

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  • Organic light emitting display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Figure 1A and Figure 1B It is a diagram schematically showing an active-matrix organic light-emitting display device having the structure of Example 1 of the organic light-emitting display device of the present invention. in, Figure 1A It is a top view showing the main part of the overall structure; Figure 1B is in Figure 1A An enlarged cross-sectional view near a pixel cut by line A-B. with the above Figure 5A , 5B The same reference numerals are attached to the same parts, and description thereof will be omitted.

[0040] Figure 1A , 1B In the organic light-emitting display device shown, the end of the cathode CD is extended to the outside of the sealing area sealed by the sealing material SL at the end of the main substrate SUB 1, so that it is integrally formed on the passivation layer PSV on the same surface. The heat sink RAD is made of the same aluminum material as the cathode CD, which is, for example, made of aluminum or a metal material containi...

Embodiment 2

[0044] Figure 2A and Figure 2B It is a diagram schematically showing an active matrix organic light emitting display device having a structure of Example 2 of the organic light emitting display device of the present invention. in, Figure 2A It is a top view showing the main part of the overall structure; Figure 2B is in Figure 2A An enlarged cross-sectional view near a pixel cut by line A-B. with the above Figure 5A , 5B The same reference numerals are attached to the same parts, and description thereof will be omitted.

[0045] Figure 2A , 2B In the organic light emitting display device shown, a part of the cathode wiring CDL made of aluminum formed between the interlayer insulating film IS2 of the main substrate SUB1 and the passivation layer PSV is extended to the main substrate SUB1 on the interlayer insulating layer IS2. The heat dissipation portion RAD is integrally formed outside the sealing area of ​​the substrate SUB1. The radiator RAD is integrally fo...

Embodiment 3

[0050] image 3 It is an enlarged cross-sectional view around one pixel of an active matrix organic light-emitting display device schematically showing the structure of Embodiment 3 of the organic light-emitting display device of the present invention. Figure 2A , 2B The same reference numerals are attached to the same parts, and description thereof will be omitted. image 3 In the organic light-emitting display device shown, the thermally conductive material HC is covered from the surface of the heat dissipation portion RAD drawn out of the sealing area of ​​the main substrate SUB1 to the outer surface of the sealing glass substrate SUB2.

[0051] As a material of the thermally conductive material HC, for example, a metal film such as an aluminum film, a copper film, a magnesium film, or an alloy thereof can be used. These metal films can be formed by vapor deposition, sputtering, or CVD. In addition, other than the metal film, for example, a highly thermally conductive s...

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Abstract

An organic light emitting display provided according to the invention maintains light emission efficiency and elongates its lifetime by radiating heat generated from organic light emitting elements to the outside of an encapsulated area. In the organic light emitting display, a part of a cathode is extended to the outside of the encapsulated area of a main substrate to form a radiation section integrally with the cathode. Heat generated from organic light emitting elements is diffused and radiated from the radiation section so that the heat can be discharged therefrom.

Description

technical field [0001] The present invention relates to an organic light-emitting display device in which an organic light-emitting layer is provided between a pair of electrodes, and an electric field is applied to the organic light-emitting layer by the pair of electrodes to make it emit light. The efficiency of the light-emitting region caused by the heat is reduced, thereby prolonging the lifetime and improving the reliability of the organic light-emitting display device. Background technique [0002] In recent years, as flat panel display devices, liquid crystal display devices (LCD), plasma display devices (PDP), field emission display devices (FED), organic light-emitting display devices (OLED), etc. are in the practical or practical development stage. Among them, as a typical thin and light-weight self-luminous display device, an organic light-emitting display device is a very promising display device in the future. Organic light emitting display devices include so-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L23/34H05B33/12H05B33/02
CPCH01L2924/0002H01L51/5237H01L27/3276H01L51/5221H01L51/529H10K59/131H10K50/87H10K59/871H10K59/872H10K59/8794H01L2924/00H10K50/822H10K50/841
Inventor 德田尚纪佐藤敏浩
Owner HITACHI DISPLAYS
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