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TVS chip glassivation silk-screen printing plate and technique method thereof

A technology of glass passivation and screen printing, which is applied to screen printing machines, printing machines, printing machines, etc., can solve problems such as incomplete groove printing, reduce the number of corners, reduce breakpoints, and reduce the number of inflection points Effect

Active Publication Date: 2020-06-23
TIANJIN HUANXIN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems existing in the above-mentioned prior art, the present invention provides a TVS chip glass passivation screen printing screen and its process method, which solves the problem of incomplete groove printing and ensures the integrity of groove coating. suitable for mass production

Method used

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  • TVS chip glassivation silk-screen printing plate and technique method thereof
  • TVS chip glassivation silk-screen printing plate and technique method thereof
  • TVS chip glassivation silk-screen printing plate and technique method thereof

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Embodiment Construction

[0029] Below in conjunction with embodiment and accompanying drawing, the present invention will be further described:

[0030] A TVS chip glass passivation screen printing screen, such as figure 1 As shown, the printing screen 1 includes a plurality of channels 3 that intersect each other in pairs, and the intersection points do not overlap each other. The channels 3 intersect each other in pairs to form a regular hexagonal effective area, that is, the TVS chip 5, and any adjacent The regular hexagon is connected by a single vertex, and the connected vertices of any three adjacent regular hexagons form a regular triangle invalid area 4, and all the channels 3 cross each other in pairs and are connected without interruption. This structure promotes the dislocation arrangement of all regular hexagonal TVS chips 5 in parallel, and the sides of all regular hexagons are seamlessly arranged on the channel 3, which minimizes the number of inflection points. At the same time, the pr...

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Abstract

The invention provides a TVS chip glassivation silk-screen printing plate. The TVS chip glassivation silk-screen printing plate includes a plurality of channels. The channels cross pairwise to form aplurality of regular-hexagonal effective areas. The any neighbouring regular hexagons are connected in a single vertex mode and the connecting vertexes of any neighbouring three regular hexagons forma regular-triangular ineffective area. The invention further provides a technique method of the printing plate for printing of TVS chip glassivation. In the printing process, an entry point of a printing direction of a drawknife is a random interior angle of the random regular hexagon. The printing direction of the drawknife parallels to a center line of the interior angle. A printing track of thedrawknife is a continuous straight line. A silicon wafer with one face carved with the channels is covered with a layer of glass sizing agent. The covering glass sizing agent is dried and sintered. The TVS chip glassivation silk-screen printing plate and the technique method thereof can efficiently solve the incomplete problem of printing of a coating in the channels and a glassivation layer in the channels can cover the channels more comprehensively and protect the channels more completely.

Description

technical field [0001] The invention belongs to the field of semiconductor devices, and in particular relates to a TVS chip glass passivation screen printing screen plate and a process method thereof. Background technique [0002] The glass passivation screen printing process is widely used in the field of semiconductor device printing because of its simple process, low cost, less organic solvents, and high safety factor. The glass passivation layer can not only improve the parameters of semiconductor devices, but also enhance the stability and reliability of semiconductor devices, and also provide good surface mechanical protection for subsequent processing. TVS (Transient Voltage Suppressor) chip is a high-efficiency semiconductor circuit protection device widely used in the market at present. The printing entry of the existing scraper is cut from the edge of the TVS chip, because the size of the TVS chip is a regular regular hexagon , its structure is very special, it ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F15/34B41F15/36B41C1/14
CPCB41C1/14B41F15/34B41F15/36
Inventor 史丽萍徐长坡陈澄梁效峰杨玉聪李亚哲王晓捧
Owner TIANJIN HUANXIN TECH DEV