CN203536405U - Novel wafer seat - Google Patents
Novel wafer seat Download PDFInfo
- Publication number
- CN203536405U CN203536405U CN201320567352.6U CN201320567352U CN203536405U CN 203536405 U CN203536405 U CN 203536405U CN 201320567352 U CN201320567352 U CN 201320567352U CN 203536405 U CN203536405 U CN 203536405U
- Authority
- CN
- China
- Prior art keywords
- utility
- wafer holder
- model
- wafer seat
- crystal bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
Abstract
The utility model provides a novel wafer seat, comprising a wafer seat of a rectangular seat. A plurality of recessed points of a "+" structure or a "X" structure are arranged and evenly distributed in the wafer seat. The novel wafer seat provided by the utility model increases friction of an original smooth surface, solves a problem that a tin liquid is unevenly distributed after film compression as the adhesive force of the surface of a conventional wafer seat is insufficient, and is beneficial for chip welding in the later stage.
Description
Technical field
The utility model relates to semiconductor welding field, is specifically related to a kind of Novel crystal bar.
Background technology
In prior art, wafer holder structure as described in Figure 1, comprise a wafer holder 1, described wafer holder 1 is arranged on lead frame 2, the shortcoming of this structure is that wafer holder surface is too smooth, and then the solder point after fusing is pressed when even with press mold head in wafer holder, and wafer surface is too smooth, bonding force deficiency causes skewness after press mold, thereby causes difficulty to weld tabs.
Application number is that 200620102765.7 Chinese patents disclose the utility model patent that name is called " a kind of modified model is sent out pliotron lead frame ", shown in lead frame adopt and in chip section, to increase the adhesion that the method for grid increases lead frame and chip, thereby improve the useful life of product, but due to limited by the adhesion that this method of grid produces is set, high-end and sophisticated products for some, can not meet the requirement of product, thereby affect the adhesion of its lead frame and chip.
Utility model content
The purpose of this utility model is to provide a kind of Novel crystal bar, makes the surface of otherwise smooth increase friction, solves existing wafer holder because surface adhesion deficiency causes tin liquor present situation pockety after press mold, is convenient to later stage weld tabs.
In order to realize above object, the utility model provides a kind of Novel crystal bar, comprises wafer holder, and described wafer holder is arranged on lead frame, and described wafer holder is rectangular configuration, and improvements of the present utility model are, described wafer holder is provided with several concave points.
Further, described concave point is uniformly distributed in described wafer holder.
As a kind of execution mode, described concave point is "+" font structure.
As another kind of execution mode, described concave point is " * " font structure.
A kind of Novel crystal bar that the utility model provides, on the surface of otherwise smooth, stamp several uniform concave points, increase mantle friction, thereby make to be evenly distributed in conjunction with material, improve surface adhesion, solve existing wafer holder because surface adhesion deficiency causes tin liquor present situation pockety after press mold, be convenient to later stage weld tabs.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of existing wafer holder;
The structural representation of a kind of Novel crystal bar that Fig. 2 provides for the utility model.
Embodiment
The utility model provides a kind of Novel crystal bar, makes the surface of otherwise smooth increase friction, solves existing wafer holder because surface adhesion deficiency causes tin liquor present situation pockety after press mold, is convenient to later stage weld tabs.
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is clearly and completely described, obviously, described is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope that the utility model is protected.
Referring to Fig. 2, a Novel crystal bar, comprises wafer holder 10, and described wafer holder 10 is arranged on lead frame 11, described wafer holder 10 is rectangular configuration, in described wafer holder, 10 are provided with several concave points 12, and described concave point 12 is uniformly distributed in described wafer holder, as a kind of embodiment, described concave point is "+" font structure, increase mantle friction, thereby make to be evenly distributed in conjunction with material, improve surface adhesion; As another kind of embodiment, described concave point is " * " font structure, increases mantle friction, thereby makes to be evenly distributed in conjunction with material, improves surface adhesion.
Known by above description, a kind of Novel crystal bar that the utility model provides, on the surface of otherwise smooth, stamp several uniform concave points, increase mantle friction, thereby make to be evenly distributed in conjunction with material, improve surface adhesion, solved existing wafer holder because surface adhesion deficiency causes tin liquor present situation pockety after press mold, be convenient to later stage weld tabs.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (4)
1. a Novel crystal bar, comprises wafer holder, and described wafer holder is arranged on lead frame, and described wafer holder is rectangular configuration, it is characterized in that, described wafer holder is provided with several concave points.
2. a kind of Novel crystal bar according to claim 1, is characterized in that, described concave point is uniformly distributed in described wafer holder.
3. a kind of Novel crystal bar according to claim 1 and 2, is characterized in that, described concave point is "+" font structure.
4. a kind of Novel crystal bar according to claim 1 and 2, is characterized in that, described concave point is " * " font structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320567352.6U CN203536405U (en) | 2013-09-13 | 2013-09-13 | Novel wafer seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320567352.6U CN203536405U (en) | 2013-09-13 | 2013-09-13 | Novel wafer seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203536405U true CN203536405U (en) | 2014-04-09 |
Family
ID=50422584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320567352.6U Expired - Fee Related CN203536405U (en) | 2013-09-13 | 2013-09-13 | Novel wafer seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203536405U (en) |
-
2013
- 2013-09-13 CN CN201320567352.6U patent/CN203536405U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20140913 |
|
| EXPY | Termination of patent right or utility model |