Telescopic flexible OLED lighting device and preparation method thereof

A lighting device and flexible technology, which is applied in semiconductor/solid-state device manufacturing, electric solid-state devices, semiconductor devices, etc., can solve the problems of not having stretchability, etc., and achieve excellent scalability and the effect of increased stretching rate

Pending Publication Date: 2021-03-19
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are flexible OLED lighting panels for sale in the market, and the laboratory also has research and development samples of ultra-thin flexible OLED lighting devices, which can be curled, but none of them have stretchability.

Method used

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  • Telescopic flexible OLED lighting device and preparation method thereof
  • Telescopic flexible OLED lighting device and preparation method thereof

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preparation example Construction

[0066] The present invention also provides the preparation method of the above-mentioned stretchable flexible OLED lighting device, such as figure 2 Shown, described preparation method comprises the following steps:

[0067] S100, forming a stretchable electrode layer on the surface of the flexible elastic substrate

[0068] According to an embodiment of the present invention, the preparation method of step S100 is any one of slit coating method, doctor blade coating method, screen printing method, spray coating method, and micro-gravure coating method.

[0069] Specifically, in step S100 , the metal paste is coated on the surface of the flexible elastic substrate 100 , dried and solidified to obtain the stretchable electrode layer 200 .

[0070] Further, forming the metal slurry includes: mixing the elastic polymer with a dispersant to form the elastic polymer slurry, and then adding the metal sheet into the elastic polymer slurry to form the metal slurry.

[0071] S200, f...

Embodiment 1

[0095] Step 1: Prepare silver paste.

[0096] First add PDMS to ethyl acetate, then stir and disperse to form PDMS slurry; then add silver flakes to PDMS slurry, stir evenly to form silver slurry. The weight percentages of silver flakes, PDMS and ethyl acetate in the silver paste were 50%, 25% and 25%, respectively.

[0097] Step 2: Fabricate a stretchable flexible OLED lighting device.

[0098] 50μm TPU is selected as the flexible elastic substrate, and a layer of stretchable electrode layer with a thickness of 0.1μm is prepared by coating silver paste on its surface. The stretchable electrode layer still has conductivity in the stretched state, and the stretchable electrode layer The elongation ratio of the layer is 5%-20%; then the ethanol solution of TIPD is sprayed on its surface to prepare a 50nm electron transport layer; then the toluene solution of SY-PPV is scraped on its surface to prepare a layer of 75nm thick Light-emitting layer; then adopt micro-gravure coating...

Embodiment 2

[0100] The first step: prepare aluminum paste.

[0101] First add PVA to amyl alcohol, then stir and disperse to form a PVA slurry; then add aluminum flakes to the PVA slurry, stir evenly to form an aluminum slurry. The weight percentages of aluminum flakes, PVA and amyl alcohol in the aluminum paste are 75%, 10% and 15% respectively.

[0102] Step 2: Fabricate a stretchable flexible OLED lighting device.

[0103] A 12 μm non-woven fabric is selected as the flexible elastic substrate, and aluminum paste is coated on its surface to prepare a stretchable electrode layer with a thickness of 0.5 μm. The stretchable electrode layer is still conductive in the stretched state, and can The stretching ratio of the stretchable electrode layer is 5%-20%; then spraying an ethanol solution of TPBi on its surface to prepare a 10nm electron transport layer; then scraping the surface to prepare a layer of toluene solution with a thickness of 50nm light-emitting layer; then use microgravure ...

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Abstract

The invention provides a telescopic flexible OLED lighting device and a preparation method thereof. The telescopic flexible OLED lighting device comprises a flexible elastic base material, a telescopic electrode layer, an electron transport layer, a light-emitting layer, a hole transport layer and a telescopic transparent conducting layer which are sequentially arranged on one side of the flexibleelastic base material from inside to outside in a stacked mode. Materials for forming the flexible elastic base material comprise at least one of PDMS, TPU, PVA, PVB and non-woven fabric. The telescopic flexible OLED lighting device provided by the invention has excellent scalability while ensuring high brightness, and the stretching rate of the OLED lighting device provided by the invention reaches up to 5%-20%. The preparation method disclosed by the invention is low in raw material price, low in production cost and simple in preparation process, and meanwhile, the obtained product has telescopic performance.

Description

technical field [0001] The invention belongs to the technical field of flexible photoelectric devices, and in particular relates to a stretchable flexible OLED lighting device and a preparation method thereof. Background technique [0002] Flexible electronic technology is considered to be the future of the electronics industry, because flexible electronic products can be bent, stretched, and sometimes even wearable, giving human vital signs data, flexible electronic technology has become an important subject of research by governments of various countries, and many research institutions And companies are pouring money into research into flexible materials. [0003] Flexible OLED (Organic Light Emitting Diode) technology is a new type of flexible electronic technology. It has the advantages of self-illumination, lightness, flexibility, surface emission, low power consumption, no heat radiation, energy saving and environmental protection. It is an advanced new display and li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/00H01L51/56
CPCH10K77/111H10K50/805H10K71/00Y02E10/549
Inventor 侯丽新王亚丽王佳黄达刘贤豪
Owner CHINA LUCKY FILM CORP
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