Glass powder suitable for OLED packaging as well as preparation method and application thereof

A basic glass powder and glass filler technology, which is applied in the manufacture of semiconductor/solid-state devices, electric solid-state devices, semiconductor devices, etc., can solve the problems of high price, toxicity, sealing failure, etc., and achieves the inhibition of devitrification and the simple preparation process. , Inhibit the effect of adjusting the thermal expansion coefficient of glass by an appropriate amount

Active Publication Date: 2021-07-16
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN201410143646.5 reports a V 2 o 5 -ZnO-B 2 o 3 Low melting point glass, but in order to improve the water resistance and chemical resistance of the glass, expensive and toxic TeO is added 2 (1~10mol%)
During the sealing process, if crystallization occurs, it will not only increase the temperature of the glass seal, but may also lead to failure of the seal. However, many studies now only focus on the glass softening temperature and thermal expansion coefficient, often ignoring the crystallization in the seal. Influence of the process on the sealing effect

Method used

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  • Glass powder suitable for OLED packaging as well as preparation method and application thereof
  • Glass powder suitable for OLED packaging as well as preparation method and application thereof
  • Glass powder suitable for OLED packaging as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] (1) According to the glass ratio of Example 1 in Table 1, with the total mass as 1000g, calculate and take each corresponding raw material: Bi 2 o 3 627.18g, H 3 BO 3 210.33g, ZnO 90.44g, Na 2 CO 3 24.91g, Nd 2 o 3 13.58g, MgO 15.37g, BaCO 3 18.17g, add the prepared material to 2000g deionized water and planetary ball mill for 1 hour, the mass ratio of material: grinding ball is 4:1, discharge the material, and dry it in a constant temperature drying oven at 150°C for 12 hours to obtain the mixture;

[0078] (2) Put the mixture obtained in step (1) in an alumina crucible, raise the temperature to 1000°C at 3°C / min and keep it warm for 1.5 hours, and then quench the molten glass obtained by melting to obtain glass shards;

[0079] (3) Using Fe 3 o 4 、Co 2 o 3 The calcined material obtained after mixing according to the molar ratio of 1:1 and keeping it warm at 1000°C for 4 hours was used as a colorant. The filler uses self-made quartz glass powder with a p...

Embodiment 2

[0086] The difference with Example 1 is: take the total mass as 1000g, calculate and take each corresponding raw material: Bi 2 o 3 696.68g, H 3 BO 3 170.53g, ZnO 81.57g, Na 2 CO 3 14.15g, Sb 2 o 3 10.76g, MgO 7.45g, Al 2 o 3 18.85g. The same method as in Example 1 was used to package the OLED element.

Embodiment 3

[0088] The difference with Example 1 is: take the total mass as 1000g, calculate and take each corresponding raw material: Bi 2 o 3 652.38g, H 3 BO 3 229.21g, ZnO 71.13g, Na 2 CO 3 12.89g, SrCO 3 25.52g, Sb 2 o 3 8.87g. The same method as in Example 1 was used to package the OLED element.

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Abstract

The invention discloses glass powder suitable for OLED packaging as well as a preparation method and application thereof. A basic glass powder material in the non-devitrification low-melting-point glass powder comprises the following components in percentage by weight: 50 to 90 percent of Bi2O3, 5 to 25 percent of B2O3, 3 to 20 percent of ZnO, and less than 10 percent of at least one additive selected from MgO, SiO2, Al2O3, Na2O, K2O, Li2O, SrO, BaO, CaO, Nd2O3, Sm2O3 and Sb2O3.

Description

technical field [0001] The invention belongs to the field of low-temperature OLED precision packaging glass, and in particular relates to a low-melting-point glass powder which does not devitrify during the sealing process, a preparation method and a use method thereof. Background technique [0002] Organic Light-Emitting Diode (OLED) displays have become an important technology for commercial flat-panel displays. Compared with LED displays, they have self-illumination, wide viewing angles, almost infinitely high contrast, low power consumption, and extremely high response speed. advantage. However, the electrodes and their organic light-emitting materials in traditional OLED displays are easy to react with water vapor and oxygen infiltrated in the air, resulting in performance deterioration and shortened lifespan. Therefore, effective airtight packaging is used to prevent water vapor, oxygen, and dust in the air And the penetration of rays, and ensuring that the components...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00C03C8/24H01L51/52
CPCC03C12/00C03C8/24H10K50/841Y02E10/549
Inventor 任海深林慧兴谢天翼姜少虎张奕姚晓刚何飞赵相毓
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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