Flexible OLED device and preparation method thereof

A device and flexible technology, applied in the field of light-emitting display, can solve problems such as package structure failure and film layer fracture, and achieve the effect of increasing the contact surface area and reducing the risk of fracture

Inactive Publication Date: 2019-05-28
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Abstract
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Problems solved by technology

Due to its own material properties, its film layer has the risk of cracking, and once it cracks because it cannot bear the bending stress, it will cause the entire package structure to fail

Method used

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  • Flexible OLED device and preparation method thereof

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Embodiment Construction

[0044] The technical solution of a flexible OLED device and its manufacturing method involved in the present invention will be further described in detail in conjunction with the accompanying drawings and embodiments.

[0045] see figure 1 As shown, one embodiment of the present invention provides a flexible OLED device, which includes a substrate 100 , an array (Array) unit layer 200 , a light emitting device layer 300 and an encapsulation layer 400 arranged in sequence.

[0046] The array unit layer 200 includes a buffer layer, a TFT layer, a planarization layer, an anode, a pixel definition layer, and the like. The light emitting device layer 300 includes a hole injection / transport layer, a light emitting layer, an electron transport / injection layer, a cathode, and the like. The encapsulation layer 400 includes a first inorganic layer 410 , a first organic layer 420 and a second inorganic layer 430 . Wherein the contact surface between the first organic layer 420 and the ...

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Abstract

The invention provides a flexible OLED (organic light emitting diode) device and a preparation method thereof. The flexible OLED device comprises a substrate, an array unit layer, a light emitting device (OLED) layer and a packaging layer, which are sequentially arranged. The packaging layer comprises a first inorganic layer, a first organic layer and a second inorganic layer which are sequentially arranged. The second inorganic layer is in a continuous wave-shaped fluctuating and bending configuration, and the connecting surface between the second inorganic layer and the first organic layer is in a continuous wave-shaped fluctuating and bending surface shape. The invention provides a flexible OLED (organic light-emitting diode) device, which adopts a novel outer inorganic layer shape structure; and the structure reduces the risk of breakage of an outer inorganic layer by increasing a contact area between the outer inorganic layer and an inner organic layer.

Description

technical field [0001] The invention relates to the technical field of light-emitting display, in particular, a flexible OLED device and a preparation method thereof. Background technique [0002] It is known that the flexible OLED (Organic Light Emitting Diode) display device has the characteristics of low power consumption, high resolution, fast response, and bendability, making it a popular development direction in the display industry and gradually becoming the mainstream of the industry. [0003] In the light-emitting unit of the OLED display device, the organic layer in the external packaging layer is particularly sensitive to external water and oxygen, and requires relatively strict packaging conditions to protect it, so as to prevent external water and oxygen from penetrating through it. The encapsulation layer goes into it. [0004] Furthermore, in order to realize the bendable characteristics of the flexible OLED display, the display substrate is generally made of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56
CPCH10K2102/311H10K59/873H10K71/00H10K50/844
Inventor 王一佳汪衎
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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