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an oled display

A display and oleophobic technology, which is applied in the field of OLED displays, can solve the problems of OLED display packaging failure and other problems, achieve the effect of preventing spillage and enhancing the packaging effect

Active Publication Date: 2021-06-01
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dam body 142 uses relatively lipophilic materials, so when the organic encapsulation layer 132 approaches the dam body 142 due to design or process deviations, the organic encapsulation layer 132 tends to approach and cover the dam body 142, and finally overflows the dam body The body 142 makes the organic encapsulation layer 132 directly exposed to the environment of water and oxygen, which has the risk of OLED display encapsulation failure

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0026] Such as figure 2 As shown, in order to solve the above-mentioned problems in the prior art, the present invention provides an OLED display that prevents the organic encapsulation layer 132 from overflowing, including: a base 100, an array substrate 110, an oleophobic dam 140, an EL light-emitting layer 120 and an encapsulation Layer 130.

[0027] The array substrate 110 is disposed above the base 100, and the material of the array substrate 110 is flexible PI, PMMC layer or rigid glass.

[0028] The oleophobic dam 140 is disposed above the array substrate 110 and surrounds the EL light-emitting layer 120. All materials used for the oleophobic dam 150 are oleophobic materials with active silane groups or fluorine-modified group substances.

[0029] The EL light emitting layer 120 is disposed above the array substrate 110 , and the height of the EL light emitting layer 120 on the array substrate 110 is smaller than the height of the oleophobic dam 150 on the array subst...

no. 2 example

[0033] Such as image 3 As shown, in order to solve the above-mentioned problems in the prior art, the present invention also provides an OLED display that prevents the overflow of the organic encapsulation layer 132, including: a substrate 100, an array substrate 110, an oleophobic dam 140, and an EL light emitting layer 120 , and the encapsulation layer 130.

[0034] The oleophobic dam 140 includes a dam body 142 and an oleophobic layer 141. The oleophobic layer 141 is coated on the surface of the dam body 142. The materials used for the oleophobic layer 141 are all oleophobic materials with active silane groups or fluorine-modified groups. Material. other structures with figure 2 Be consistent and stop repeating.

[0035] In this example, when the organic encapsulation layer 132 flows close to the oleophobic dam 140, due to the oleophobic property of the oleophobic layer 141, the organic encapsulation layer 132 will be subjected to flow resistance, thereby stopping the ...

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PUM

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Abstract

The invention discloses an OLED display, which comprises an array substrate, a light-emitting layer, an oleophobic dam and an encapsulation layer; wherein the light-emitting layer is arranged above the array substrate; and the oleophobic dam is arranged above the array substrate , and surround the light-emitting layer; and the encapsulation layer is disposed above the array substrate and covers the light-emitting layer and the oleophobic dam. The advantage of the present invention is that: the oleophobic dam or coating The material of the oleophobic layer on the surface of the dam body is an oleophobic material with an active silane group or a fluorine-modified group substance, so that the organic packaging layer printed by inkjet is subjected to flow near the oleophobic dam or the oleophobic layer The resistance prevents the overflow of the organic encapsulation layer, so as to achieve the purpose of enhancing the encapsulation effect.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an OLED display. Background technique [0002] Organic Light-Emitting Diode (OLED) has the advantages of wide color gamut, high contrast, self-illumination, thin, light and foldable, and has been widely used in the fields of display and lighting. The light-emitting layer material and cathode material of the OLED display are very sensitive to water and oxygen, which will seriously affect the luminous effect of the OLED display, so the encapsulation layer that blocks the intrusion of external water and oxygen is very important. [0003] The packaging layer of current OLED displays usually adopts an inorganic / organic / inorganic composite structure. This overlapping structure has the characteristics of packaging and flexibility. Among them, the packaging effect of the inorganic packaging layer is outstanding, and the bending performance of the organic packaging layer is excellent. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/52H01L27/32
CPCH10K59/12H10K50/8428H10K50/844
Inventor 王磊
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD