OLED (Organic Light Emitting Diode) display screen light-emitting coating protection filling adhesive and preparation method thereof

A technology for protecting filling and display screens, applied in the direction of adhesives, epoxy glue, adhesive types, etc.

Pending Publication Date: 2022-03-22
惠州市大亚湾华鑫新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a protective filler for OLED display luminescent coating and its preparation method, which can effectively solve the problems encountered in...

Method used

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  • OLED (Organic Light Emitting Diode) display screen light-emitting coating protection filling adhesive and preparation method thereof

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preparation example Construction

[0032] A method for preparing an OLED display luminous coating protection filler, comprising the following steps:

[0033] (1) Clean the cavity, dispersing disc, and stirring rod of the reactor A with ethyl acetate, and return to the original sealed state after the cleaning is completed;

[0034] (2) Vacuumize the sealed reaction kettle to remove water vapor, and the vacuum degree must reach 1.0×10 -4 Torr;

[0035] (3) After the vacuum operation is completed, inject nitrogen into the reactor A to release the pressure and return to normal atmospheric pressure;

[0036] (4) Add epoxy resin and initiator, after primary dispersion with 300 rpm speed, start ultrasonic oscillation, increase stirring speed to 1200 rpm for high-speed dispersion, dispersion time 20 minutes;

[0037] (5) After step (4) is completed, stop the ultrasonic oscillation, add additives, and disperse at a speed of 800 rpm for 5 minutes;

[0038] (6) After step (5) is completed, add leveling agent and defoam...

Embodiment 1

[0043] The invention provides a protective filling glue for OLED display luminous coating, which comprises the following components: in terms of mass percentage, epoxy resin is 90%, additive is 5%, initiator is 4.8%, and leveling agent is 0.2%. The initiator is the composition of 4-(phenylthio)phenyl diphenylthiohexafluorophosphate, bis(4-(diphenylsulfonium)phenyl)sulfide-bishexafluorophosphate; The oxygen resin is a combination of 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexyl carboxylate and epoxybutane. The leveling agent is polydimethylsiloxane.

[0044] A method for preparing an OLED display luminous coating protection filler, comprising the following steps:

[0045] (1) Clean the cavity, dispersing disc, and stirring rod of the reactor A with ethyl acetate, and return to the original sealed state after the cleaning is completed;

[0046] (2) Vacuumize the sealed reaction kettle to remove water vapor, and the vacuum degree must reach 1.0×10 -4 Torr;

[0047] (3) After ...

Embodiment 2

[0055] The invention provides a protective filling glue for OLED display luminescent coating, which comprises the following components: in terms of mass percentage, epoxy resin is 95%, additive is 3%, initiator is 1.8%, and leveling agent is 0.2%. The initiator is 4-(phenylthio)phenyl diphenylthiohexafluorophosphate, bis(4-(diphenylsulfonium)phenyl)sulfide-bishexafluorophosphate, diphenyl-(4 -Phenylthio)phenylsulfonium hexafluoroantimonate, bis[4-diphenylthiophenyl]sulfide dihexafluoroantimonate, bis(4-tert-butylphenyl)iodonium hexafluorophosphate, Di-tert-butylphenyliodonium hexafluorophosphate mixture; the epoxy resin is 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexyl carboxylate. The leveling agent is polydimethylsiloxane. The additives are trimethoxy[2-(7-oxabicyclo[4.1.0]hept-3-yl)ethyl]silane, 3-(2,3-epoxypropoxy)propyltrimethoxy Mixture of silanes.

[0056] A method for preparing an OLED display luminous coating protection filler, comprising the following steps:

[00...

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Abstract

The invention discloses an OLED (Organic Light Emitting Diode) display screen light-emitting coating protection filling adhesive which comprises the following components in percentage by mass: 80-99% of epoxy resin, 0.01-10% of an additive and 0.01-5% of an initiator. According to the OLED display screen light-emitting coating protection filling adhesive, the problems encountered by a light-emitting layer are effectively solved, the fidelity and transparency of the light-emitting layer can be kept in use, the light-emitting coating can be effectively protected, and the service life of the light-emitting coating can be prolonged.

Description

technical field [0001] The invention relates to the technical field of OLED display screen protective filling glue, in particular to a protective filling glue for OLED display luminous coating and a preparation method thereof. Background technique [0002] From the perspective of OLED display structure: an anode, an organic light-emitting layer and a cathode are sequentially formed on the substrate. The biggest problem that restricts the development of the OLED industry and the biggest defect of OLED is the short life of OLED. The reason for the short life of OLED is mainly that the electrodes and light-emitting layer organic materials that make up OLED devices are resistant to pollutants, water vapor, and oxygen in the atmosphere. It is very sensitive, and it is prone to electrochemical corrosion in an environment containing water vapor and oxygen, causing damage to OLED devices. Therefore, the OLED must be effectively packaged to prevent water vapor, oxygen, etc. from ent...

Claims

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Application Information

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IPC IPC(8): C09J163/00C09J11/06
CPCC09J163/00C09J11/06C08K5/5435
Inventor 李文瑜黄必威孟令宾
Owner 惠州市大亚湾华鑫新材料有限公司
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