Ceramic support for pre-oxidating copper sheet

A ceramic bracket and pre-oxidation technology, applied in the direction of semiconductor/solid-state device parts, semiconductor devices, electrical components, etc., can solve the problems affecting product surface grain roughness and appearance quality, chip welding and surface wire bonding The contact between the sheet and the conveyor belt will be oxidized, so as to achieve smooth flow, improve the surface grain state, and uniform roughness.

Active Publication Date: 2014-03-12
上海富乐华半导体科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new type of ceramics supports can be applied during metal plate production without changing its properties or quality. It improves the process' ability to prevent unwanted deformation caused by pressure from being exerted onto it when placed over rollers. Additionally, this technology allows for better control over temperature and humidity conditions while maintaining consistency across different parts of the product made up of these components. Overall, this innovative design enhances the performance and lifespan of the final products produced with metals plates.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the efficiency or effectiveness of the method described beforehand during the production phase of DCB substrate material. Previous methods have resulted in poor oxygen diffusion from the coating layer onto the metal plate due to exposure to air while it was being treated in an environment that contains sulfur dioxide gas. Additionally, previous processes had issues with contaminants such as iron powder generated when applying coatings over these surfaces causing damage to their properties.

Method used

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  • Ceramic support for pre-oxidating copper sheet
  • Ceramic support for pre-oxidating copper sheet

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Embodiment Construction

[0012] The ceramic support for copper pre-oxidation of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0013] like figure 1 As shown, the present invention is used for the ceramic support of pre-oxidation of copper sheet, at first use the ceramic substrate of 138 millimeters * 188 millimeters * 0.635 millimeters, cover the copper foil 3 of 0.1 millimeter ~ 0.4 millimeters on its surface. Patterns are etched out of ceramic substrates by pattern transfer and etching processes. Cut the ceramic substrate into individual long strips with a specific width using a laser cutter. Fold both ends of the strip-shaped ceramic substrate into 90 degrees along the center of the copper foil 3 to form a ceramic sheet body 1 and ceramic bending parts 2 arranged at both ends of the ceramic sheet body 1 .

[0014] like figure 2 As shown, two ceramic supports 6 are placed face to face on the conveyor belt 4, and then the copper sheet

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PUM

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Abstract

The invention discloses a ceramic support for pre-oxidating a copper sheet. The ceramic support comprises a ceramic sheet body and copper foils; ceramic bending parts are arranged at two ends of the ceramic sheet body; the copper foils are attached to the inner surfaces of the ceramic sheet body and the ceramic bending parts; the central lines of the copper foils are coincided with the folding marks of the connecting parts of the ceramic sheet body and the ceramic bending parts; the ceramic bending parts are vertical to the ceramic sheet body. The ceramic sheet body and the ceramic bending parts are 0.635mm thick; the copper foils are 0.1-0.4mm thick. According to the ceramic support for pre-oxidating the ceramic sheet, the copper sheet is directly placed on the support to be oxidated instead of being placed on a conveyor belt to be pre-oxidated with one surface, so a certain dangling degree exists between the copper sheet and the conveyor belt, the smooth flowing of oxygen is ensured, and double surfaces of the copper sheet are uniformly oxidated. The surface grain state after the product is sintered is improved, and the roughness is uniform. According to the ceramic support for pre-oxidating the copper sheet, the ceramic sheet made of Al2O3 and the copper foils are adopted as the making material of a jig which is made with a DBC (Direct Bonding Copper) method, and the jig is simple in structure and durable.

Description

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Claims

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Application Information

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Owner 上海富乐华半导体科技有限公司
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