Glass passivation pellet (GPP) chip electrophoresis fluid

A glass passivation, electrophoretic liquid technology, applied in electrophoretic coatings and other directions, to achieve the effect of small IR at room temperature, good density and firmness, and strong adhesion

Inactive Publication Date: 2011-06-01
ZHEJIANG CHANGSHAN LONGCHANG ELECTRONICS
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This formula can appear above-mentioned defect in use

Method used

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  • Glass passivation pellet (GPP) chip electrophoresis fluid
  • Glass passivation pellet (GPP) chip electrophoresis fluid
  • Glass passivation pellet (GPP) chip electrophoresis fluid

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Embodiment Construction

[0012] The formula of the electrophoretic liquid of the present invention is: it is made up of following components: volume percentage is 93.75% isopropanol, volume percentage is the acidic surfactant of 6.25%; Add 375g glass powder in every 10000ml above-mentioned mixed liquid.

[0013] The technical effect of the electrophoretic solution of the present invention will be described below in conjunction with the accompanying drawings.

[0014] 1. Improved uniformity of glass shape

[0015] Such as figure 1 and 2 As shown, the traditional electrophoresis formula has the following defects: First, the orientation is not good, that is, during the electrophoresis process, glass will be applied to the parts of the chip that do not need glass protection, resulting in deglazing of the parts that do not need glass after the glass is sintered. ; Utilize the electrophoretic fluid of the present invention, completely eliminate the existence of this problem. It can not only ensure the co...

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Abstract

The invention provides a glass passivation pellet (GPP) chip electrophoresis fluid, which comprises the following components in percentage by volume: 93.75 percent of isopropanol and 6.25 percent of acid surfactant. 375g of glass powders are added to every 10000ml of mixed liquor. By the technical solution, the content and the components of organic carriers are reduced, and isopropanol with less molecular weight of 60.1 is used; at the same time, the acid surfactant (EVO) is taken as a modifier. The formula of novel electrophoresis fluid enables directional performance of the electrophoresis fluid, and density and fastness of the glass powders to be better and the glass shape to be excellent. The organic residues and incompletely burnt carbon simple substance residues are less after the glasses are burnt, and the room temperature IR of a product is much smaller. Because the acid surfactant has strong adhesion to the glass powers, the suspension effect of the novel electrophoresis fluid is superior to that of traditional electrophoresis fluids.

Description

technical field [0001] The invention relates to a production process of a GPP chip, in particular to an electrophoretic solution for glass passivation coating a GPP chip in the production process. Background technique [0002] In order to improve the reliability of semiconductor chips, the first thing that needs to be solved is the cleanliness of the exposed PN junction of the semiconductor chip, and the existence of conductive substances on the surface of the PN junction should be reduced as much as possible. At the same time, maintaining the thickness of the GPP glass is a key, while the focus is on designing and controlling the uniformity of the glass. Because we need a thicker glass thickness to ensure the insulation withstand voltage strength of the chip protection position, so that the breakdown of the glass protective layer during use will not cause the chip to fail. The organic matter of the glass powder carrier can be completely burned off during the oxidation and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/44
Inventor 王坚红
Owner ZHEJIANG CHANGSHAN LONGCHANG ELECTRONICS
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