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Surface light-emitting object

一种面状发光、致发光的技术，应用在电致发光光源、光学、光源等方向，能够解决照明及显示品质不充分、亮度不均大等问题，达到亮度不均小、低成本的效果

Inactive Publication Date: 2013-10-23
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the thin and long organic EL elements are juxtaposed, a pattern in which the organic EL elements are juxtaposed appears in a planar illumination or display image. As a result, brightness unevenness is large, resulting in poor lighting and display quality full question

Method used

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  • Surface light-emitting object

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] 1. Fabrication of strip-shaped organic EL elements

[0062] First, as a substrate material, a SUS304 foil having a width of 300 mm, a length of 140 m, and a thickness of 25 μm was prepared. On this SUS foil, an insulating material (manufactured by JSR Corporation, JEM-477) was applied, dried, and post-baked at 220° C. for 1 hour to form a planarization layer with a thickness of 1.5 μm.

[0063] Then, using a sputtering apparatus, ITO was formed into a film (thickness: 110 nm) in a predetermined pattern on the planarization layer to serve as a reflective layer and a first electrode (anode).

[0064] On the first electrode after film formation, an insulating material (manufactured by JSR Corporation, JEM-477) was applied and dried as an insulating layer. Developed with ammonium hydroxide (TMAH), rinsed with water, removed water, and then post-baked at 220° C. for 1 hour. The film thickness after post-baking was about 1.5 μm. And the insulating layer was set as the patt...

Embodiment 2

[0069] A planar light emitter was produced in the same manner as in Example 1 except that the pitch X of the strip-shaped organic EL elements was 2 mm.

Embodiment 3

[0071] A planar light emitting body was produced in the same manner as in Example 1 except that the pitch X of the strip-shaped organic EL elements was 3 mm.

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Abstract

Provided is a surface light-emitting object which can be mass-produced at low cost and is reduced in luminance unevenness. This surface light-emitting object comprises a base, a plurality of ribbon-shaped organic electroluminescent elements disposed side by side on the base, and a lenticular sheet which has been applied to the base and the ribbon-shaped organic electroluminescent elements through an adhesion layer and which has a plurality of convex cylindrical lenses disposed side by side, wherein the direction in which the convex cylindrical lenses extend is substantially parallel to the direction in which the ribbon-shaped organic electroluminescent elements extend.

Description

technical field [0001] The invention relates to a planar illuminant. More specifically, the present invention relates to a planar light-emitting body using a strip-shaped organic electroluminescent element and a lenticular lens sheet. Background technique [0002] In addition to low power consumption, organic electroluminescent (EL) light-emitting devices also rely on the self-luminescence of organic light-emitting materials, and can obtain a variety of colors from the organic light-emitting materials, so they are expected to be used in lighting equipment, liquid crystal displays, etc. It is used in a wide range of applications such as backlights for devices, lighting components for display and decoration, and digital signage. It is also known that an organic EL light-emitting device is suitable for lighting applications because it emits surface light. In order to put the organic EL light-emitting device into practical use, it is necessary to increase the size, reduce the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/02G02B3/06G02B5/02H01L51/50
CPCH05B33/10G02B3/005H01L51/5275H01L27/32G02B5/02H01L2251/5361H10K59/879H10K2102/351H10K50/858H10K59/00
Inventor 长濑纯一细川和人中井孝洋森田成纪
Owner NITTO DENKO CORP