Film uncovering agent, film uncovering agent preparation method and LED chip film pouring loss reduction method

A technology of LED chip and film-removing agent, which is applied in the direction of electrical components, circuits, semiconductor devices, etc., can solve the problems of grain loss and high toxicity of film-removing agent, etc., to reduce the loss of inverted film, facilitate the film-removing operation, and soften the effect Good results

Active Publication Date: 2015-03-25
马鞍山太时芯光科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of grain loss and the high toxicity of the film-removing agent existing in the existing film-reversing process, the present invention provides a film-removing agent and its preparation method and a method for reducing the loss of the film-reversing film of LED chips

Method used

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  • Film uncovering agent, film uncovering agent preparation method and LED chip film pouring loss reduction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A film remover, its composition and mass parts are: 10 parts of acetone, 10 parts of isopropanol, 1 part of nitric acid (68% by mass).

[0039] In order to obtain the above-mentioned substances, a preparation method of a film-removing agent, the steps are:

[0040] (a) Weigh 10 parts of isopropanol and 1 part of nitric acid (68% in mass fraction) according to the mass ratio, add them into a blending kettle with a stirring device, and stir at 55°C for 25 minutes;

[0041] (b) 10 parts of acetone are added dropwise at a speed of 2 parts / minute in the blending kettle in step (a);

[0042] (c) Stand still for 15 minutes after the dropwise addition, and then cool to room temperature to obtain the above-mentioned film release agent.

[0043] The film release agent in this embodiment has safe components, good dispersion of each substance in the mixture, can quickly soften the blue film and can quickly volatilize, and will not penetrate the blue film to contaminate the chip. ...

Embodiment 2

[0052] A film remover, its composition and mass parts are: 15 parts of acetone, 30 parts of isopropanol, 3 parts of nitric acid (68% by mass).

[0053] In order to obtain the above-mentioned substances, a preparation method of a film-removing agent, the steps are:

[0054] (a) Weigh 30 parts of isopropanol and 3 parts of nitric acid into a blending kettle with a stirring device according to the mass ratio, and stir at 60°C for 20 minutes;

[0055] (b) 15 parts of acetone are added dropwise at a speed of 2 parts / minute in the blending kettle in step (a);

[0056] (c) Stand still for 15 minutes after the dropwise addition, and then cool to room temperature to obtain the above-mentioned film release agent.

[0057] The film release agent in this embodiment has safe components, good dispersion of each substance in the mixture, can quickly soften the blue film and can quickly volatilize, and will not penetrate the blue film to contaminate the chip.

[0058] A method for reducing ...

Embodiment 3

[0066] A film remover, the composition and mass parts are: 12 parts of acetone, 20 parts of isopropanol, and 2 parts of nitric acid (68% by mass).

[0067] In order to obtain the above-mentioned substances, a preparation method of a film-removing agent, the steps are:

[0068] (a) Weigh 20 parts of isopropanol and 2 parts of nitric acid into a blending kettle with a stirring device according to the mass ratio, and stir at 40°C for 30 minutes;

[0069] (b) 12 parts of acetone are added dropwise at a speed of 2 parts / minute in the blending kettle in step (a);

[0070] (c) Stand still for 15 minutes after the dropwise addition, and then cool to room temperature to obtain the above-mentioned film release agent.

[0071] The film release agent in this embodiment has safe components, good dispersion of each substance in the mixture, can quickly soften the blue film and can quickly volatilize, and will not penetrate the blue film to contaminate the chip.

[0072] A method for reduc...

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Abstract

The invention discloses a film uncovering agent, a film uncovering agent preparation method and an LED chip film pouring loss reduction method and belongs to the field of semiconductor device manufacturing. The film uncovering agent is obtained by mixing acetone, isopropyl alcohol and nitric acid on a certain condition, wherein the components of the film uncovering agent are safe, the dispersity of all substances in the mixture is good, and the mixture can soften a blue film rapidly and evaporate quickly without permeating the blue film and contaminating a chip. When the film uncovering agent is used in the process of chip film pouring, the loss of crystal grains in the film uncovering process can be reduced to zero; the film uncovering agent and the film pouring process are safe, environmentally friendly and worth popularizing and using, the toxicity is low, and the economic benefit is high.

Description

technical field [0001] The invention belongs to the field of semiconductor device manufacturing, and more specifically relates to a film-removing agent, a preparation method thereof and a method for reducing the loss of LED chip flipping film. Background technique [0002] With the advent of light-emitting diodes (LEDs) in 1960, LEDs began to be widely used in our surroundings, playing a pivotal role in daily life, and becoming one of the most valued light source technologies, such as various indicator lights , display light source and lighting equipment, etc. can see the application of LED. Compared with traditional lighting sources such as fluorescent lamps and incandescent tungsten bulbs, LEDs have the advantages of high brightness, low power consumption, long life, fast startup, small size, environmental protection and energy saving, and are not prone to visual fatigue. They have broad development prospects. , has received widespread attention. The manufacturing proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/00
CPCH01L33/0095H01L2933/0008
Inventor 朱燕李有群徐兴庆许静廉鹏
Owner 马鞍山太时芯光科技有限公司
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