CN101140761A - Method for joining magnetic head rectangular bar in photoetching technology - Google Patents
Method for joining magnetic head rectangular bar in photoetching technology Download PDFInfo
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- CN101140761A CN101140761A CNA2006101291847A CN200610129184A CN101140761A CN 101140761 A CN101140761 A CN 101140761A CN A2006101291847 A CNA2006101291847 A CN A2006101291847A CN 200610129184 A CN200610129184 A CN 200610129184A CN 101140761 A CN101140761 A CN 101140761A
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- magnetic head
- rectangular bar
- loading plate
- head rectangular
- packaging plastic
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Abstract
The invention discloses a method for connecting a group of long strips with magnetic head in photoetching technology, which comprises steps as follows: providing the fist bearing plate and a group of long strips with magnetic head. Each long strip with the magnetic head is used to form the first surface and the corresponding second surface of the air bearing surface. The said long strips with the magnetic head are fixed on the first bearing plate and make the first surface face the viscous surface. Package resin is offered to infill on the second surface of the long strips with magnetic head and inside the gap between the long trips with magnetic head. The second bearing plate is provided to adhere to the second surface of the long strips with magnetic head by the said package resin. After ultraviolet irradiation onto the first bearing plate and the package resin, the first bearing plate will be detached from the long strips with magnetic head, and then solidify the package resin to fix the long strips with magnetic head and the second bearing plate together. The invention also discloses a method for manufacturing the magnetic head.
Description
Technical field
The present invention relates to a kind of manufacture method that is used for the magnetic head in the information recording disk driver, particularly, the present invention relates to a kind of method that in photoetching (photolithography) technology, magnetic head rectangular bar is coupled together.
Background technology
A kind of common information storing device is a disc driver.Fig. 1 a has showed a kind of disc driver 200.Disk 101 is installed on the Spindle Motor 102 and by its rotation.Carry magnetic head fold piece combination 100 on the voice coil motor arm 104.Described magnetic head fold piece combination 100 comprises the magnetic head 103 with read-write sensor.The motion of one voice coil motor control voice coil motor arm 104, and then control head 103 moving between disk 101 surperficial tracks finally realize read-write sensor data write on disk 101 of magnetic head 103.When running status, comprise and form aerodynamic force between the magnetic head 103 of reading and writing sensor and the disk 101 and contact, and produce lift.The mutual balance of elastic force that the cantilever by magnetic head fold piece combination 100 of this lift and opposite sign but equal magnitude applies, and then cause in the whole radial stroke of motor arm 104, the surface of the disk 101 of rotation forms and keeps predetermined flying height.
Fig. 1 b has showed the stereographic map that magnetic head shown in Fig. 1 a is observed from the bottom.Form magnetic read/write head 116 on the side of this magnetic head 103, be used to realize the data read-write operation of magnetic head with respect to disk 101.Described magnetic head 103 has air bearing face (air bear surface, ABS) 117 towards disk 101.When disc driver moves, produce aerodynamics between the air bearing face 117 of described magnetic head 103 and the disk 101 of high speed rotating and contact, thereby make magnetic head 103 dynamically be suspended in disk 101 tops and realize data read-write operation.
For making magnetic head successfully carry out data read-write operation with respect to disk, magnetic head must have good flight stability, and the machining precision of magnetic head air loading end is a key factor that influences flight stability, because the machining precision of magnetic head air loading end is high more, the physical size of the actual magnetic head air loading end that is processed to form just approaches ideal value more, correspondingly, the flight parameter during flying magnetic head approaches its design load more.Simply introduce the manufacturing procedure of magnetic head air loading end below.
In general, the processing of magnetic head air loading end is to carry out at one group of magnetic head rectangular bar that is made of a plurality of magnetic head bodies.These magnetic head rectangular bars are packaged together mutually and form the long strips combination.After completion of processing, these long strips combinations are disconnected from each other, and each long strips is cut and forms independent magnetic head.Fig. 2 a-2b has showed the magnetic head rectangular bar that is used to form magnetic head.As shown in the figure, the width of magnetic head rectangular bar 2 is W, and thickness is T.Described magnetic head rectangular bar 2 has first surface 3 and and these first surface 3 opposing second surface 4 that are used to form the air bearing face.Carry out photoetching (photolithography) successively and vacuum etching and processing (vacuum etching) forms the air bearing face by first surface 3 to the long strips 2 that is packaged together mutually.
In above-mentioned process, the comprehensive flatness of the first surface of the long strips of encapsulation state has bigger influence to the manufacturing accuracy of magnetic head air loading end.Specifically, if this comprehensive flatness is very high, then the shape distortion degree of the air bearing face of Xing Chenging is very little, like this, the machining precision of air bearing face is very high, correspondingly, magnetic head can obtain good flight stability, and makes disc driver have flying quality preferably.In order to improve above-mentioned comprehensive flatness, industry with the first surface (the air bearing face forms face) of magnetic head rectangular bar as the position reference face that in photoetching process, magnetic head rectangular bar is coupled together.Introduce this method below.
As shown in Figure 3, traditional magnetic head rectangular bar method of attachment comprises the steps: to form the holding device (step 101) with tacky surfaces; Yoke long strips is provided, described each magnetic head rectangular bar has the first surface that is used to form the air bearing face and reaches and this first surface opposed second surface, and described magnetic head rectangular bar is fixed to holding device, make first surface face tacky surfaces (step 102); By packaging plastic magnetic head rectangular bar is connected to each other formation magnetic head rectangular bar combination (step 103); Loading plate is provided and is fixed to by bonding agent on the second surface of magnetic head rectangular bar (step 104); Remove holding device (step 105).
Here, holding device is used for carrying magnetic head rectangular bar as interim carrying tool temporarily.When whole work flow finishes (above-mentioned steps 105), holding device need be separated from magnetic head rectangular bar.In above-mentioned classic method, make tacky surfaces lose viscosity in the specific solution by holding device is immersed, thereby make holding device break away from magnetic head rectangular bar because of dissolution.Yet, in immersion process,, therefore very likely cause magnetic head rectangular bar to suffer the corrosion of solution and damage because magnetic head rectangular bar also immerses in the solution simultaneously; Secondly, in above-mentioned steps 103 and 104, the curing of packaging plastic and bonding agent all needs certain hour, because these two steps are not carried out simultaneously, therefore packaging plastic and bonding agent can not be cured simultaneously, thereby cause time waste, finally cause whole working (machining) efficiency to reduce.
Therefore, be necessary to provide a kind of magnetic head rectangular bar method of attachment of improvement, to overcome the shortcoming of prior art.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of method that in photoetching process magnetic head rectangular bar is coupled together, and its air bearing face that can improve the magnetic head rectangular bar that couples together forms the flatness of face.
Another object of the present invention is to provide a kind of method that in photoetching process magnetic head rectangular bar is coupled together, it can reduce even avoid the damage influence of process to magnetic head rectangular bar.
Another object of the present invention is to provide a kind of method that in photoetching process magnetic head rectangular bar is coupled together, it can improve whole working (machining) efficiency.
Another object of the present invention is to provide a kind of magnetic head processing method, it can improve the machining precision of magnetic head.
For achieving the above object, the invention provides a kind of method that in photoetching process, yoke long strips is coupled together, comprise step: (1) provides first loading plate with tacky surfaces; (2) provide yoke long strips, each magnetic head rectangular bar has the first surface that is used to form the air bearing face and reaches and this first surface opposing second surface, and described magnetic head rectangular bar is fixed to first loading plate, makes first surface towards tacky surfaces; (3) provide packaging plastic and be filled into it on second surface of magnetic head rectangular bar and in the gap between the magnetic head rectangular bar; (4) provide second loading plate and it is bonded to the second surface of magnetic head rectangular bar by above-mentioned packaging plastic; (5) with ultraviolet ray irradiation first loading plate and packaging plastic, thereby make first loading plate break away from magnetic head rectangular bar, and packaging plastic is solidified and the magnetic head rectangular bar and second loading plate are fixed together.
In one embodiment of the invention, described step (1) comprising: first loading plate with positioning reference plane (a) is provided; (b) on above-mentioned positioning reference plane, laminate the bonding film of one deck as the tacky surfaces of described first loading plate; (c) edge along first loading plate removes unnecessary bonding film.
Described step (3) can comprise: the auxiliary package board that (i) will have utensil receiving opening adheres on the bonding film of first loading plate, and magnetic head rectangular bar is exposed from utensil receiving opening; Packaging plastic (ii) is provided and it is filled in the utensil receiving opening, packaging plastic is flow on the second surface of magnetic head rectangular bar and in the gap between the magnetic head rectangular bar.Described packaging plastic can be ultraviolet curing glue.Described auxiliary package board can be formed by stupalith, stainless steel, condensate (polymer) or plastics, so that enough intensity is provided.
Described step (5) can comprise: with ultraviolet ray irradiation first loading plate and packaging plastic, make the bonding film forfeiture viscosity of first loading plate, packaging plastic is solidified and the magnetic head rectangular bar and second loading plate are fixed up; First loading plate is removed from magnetic head rectangular bar.
A kind of magnetic head manufacturing method comprises the steps: that (1) provides first loading plate with tacky surfaces; (2) provide yoke long strips, each magnetic head rectangular bar has the first surface that is used to form the air bearing face and reaches and this first surface opposing second surface; Described magnetic head rectangular bar is fixed to first loading plate, makes first surface towards tacky surfaces; (3) provide packaging plastic and be filled into it on second surface of magnetic head rectangular bar and in the gap between the magnetic head rectangular bar; (4) provide second loading plate and it is bonded to the second surface of magnetic head rectangular bar by above-mentioned packaging plastic; (5) with ultraviolet ray irradiation first loading plate and packaging plastic, thereby make first loading plate break away from magnetic head rectangular bar, and packaging plastic is solidified and the magnetic head rectangular bar and second loading plate are fixed together; (6) first surface of the described magnetic head rectangular bar of etching; (7) described magnetic head rectangular bar is cut into independent magnetic head.
The invention has the advantages that: owing to form face as the position reference face with the air bearing face of magnetic head rectangular bar, so can keep good comprehensive flatness between the encapsulation process hollow air bearing section formation face; Secondly, owing to adopt illumination mode (non-steeped mode) to eliminate being connected between magnetic head rectangular bar and the interim carrying tool (first loading plate), so reduce or avoided the destroying infection of process magnetic head; In addition,, therefore reduced process time, improved working (machining) efficiency because fixing between fixing and second loading plate and the magnetic head rectangular bar between the magnetic head rectangular bar carried out simultaneously.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 a is the stereographic map of traditional magnetic disk driving arrangement.
Fig. 1 b is the stereographic map of the magnetic head of magnetic disk drive shown in Fig. 1 a.
Fig. 2 a is the stereographic map that magnetic head rectangular bar connects the magnetic head rectangular bar that uses in the operation.
Fig. 2 b is the partial enlarged drawing of the part of magnetic head rectangular bar A shown in Fig. 2 a.
Fig. 3 has showed traditional method flow diagram that magnetic head rectangular bar is coupled together.
Fig. 4 has showed the described FB(flow block) that yoke long strips is coupled together of one embodiment of the invention.
Fig. 5 a-5c is a series of views, has showed the flow process that first loading plate is provided, and this first loading plate is used for yoke long strips thereon temporary fixed.
Fig. 6 a-6c is a series of views, has showed yoke long strips is attached to process on first loading plate that is formed by flow process shown in Fig. 5 a-5c.
Fig. 7 a-7d is a series of views, has showed the flow process that the said head long strips is encapsulated, and these magnetic head rectangular bars are carried on described first loading plate by flow process shown in Fig. 6 a-6c.
Fig. 8 a-8c has showed the flow process that second loading plate is installed to the magnetic head rectangular bar second surface.
Fig. 9 a is the constitutional diagram with ultraviolet ray described first loading plate of irradiation and packaging plastic.
Fig. 9 b is for removing the constitutional diagram behind described first loading plate among Fig. 9 a.
Figure 10 has showed the surface scan performance plot of the magnetic head rectangular bar combination that is formed by classic method and the described method of one embodiment of the invention respectively.
Figure 11 has showed the described magnetic head work flow of one embodiment of the invention block diagram.
Embodiment
The method that in the described photoetching process of one embodiment of the invention yoke long strips is coupled together is described now.Fig. 4 has showed the described magnetic head rectangular bar method of attachment of one embodiment of the invention.As shown in the figure, this method comprises the steps: at first, and first loading plate (step 201) with tacky surfaces is provided; Secondly, yoke long strips is provided, each magnetic head rectangular bar has the first surface that is used to form the air bearing face and reaches and this first surface opposing second surface, and described magnetic head rectangular bar is fixed to first loading plate, makes first surface towards tacky surfaces (step 202); Next, provide packaging plastic and be filled into it on second surface of magnetic head rectangular bar and in the gap between the magnetic head rectangular bar (step 203); Then, provide second loading plate and it is bonded to the second surface (step 204) of magnetic head rectangular bar by above-mentioned packaging plastic; Shine first loading plate and packaging plastic with ultraviolet ray, thereby make first loading plate break away from magnetic head rectangular bar, and packaging plastic is solidified and magnetic head rectangular bar and second loading plate be fixed together (step 205).
Fig. 5 a-5c has showed above-mentioned steps 201.At first, shown in Fig. 5 a, provide first loading plate 10 that has positioning reference plane 32 and can allow ultraviolet ray pass, then, on the positioning reference plane 32 of described first loading plate 10, laminate the bonding film 12 of one deck such as stack-press device 11 by suitable instrument.Described bonding film 12 is the photosensitivity film, promptly is being subjected to particular light ray, loses viscosity when shining such as ultraviolet ray.At last, shown in Fig. 5 b, unnecessary bonding film 12 is removed, thereby form first loading plate 10 that has bonding film 12 shown in Fig. 5 c along the edge of described first loading plate 10.Here, described bonding film 12 is used for interim bonding yoke long strips (detailed aftermentioned) as the tacky surfaces of loading plate 10.In addition, described first loading plate 10 is used for carrying yoke long strips as interim carrying tool temporarily, when work flow finishes, this first loading plate 10 is removed again.
Fig. 6 a-6c has showed the detailed process of above-mentioned steps 202.As shown in the figure, at first provide yoke long strips 14.The width of described each magnetic head rectangular bar 14 is W1, and thickness is T1.Described magnetic head rectangular bar 14 has first surface 15 (simultaneously with reference to figure 7d) and and these first surface 15 opposing second surface 152 that are used to form the air bearing face.Then,, one by one each magnetic head rectangular bar 14 is moved to first loading plate 10, the first surface 15 of magnetic head rectangular bar 14 is adhered on the described bonding film 12, thereby form the arrangement architecture shown in Fig. 6 c such as vacuum pick 13 by suitable instrument.Though should be noted that only to have shown five magnetic head rectangular bars 14 among the figure, yet actual quantity can be regulated according to product type and working ability.
Fig. 7 a-7d has showed the specific implementation process of above-mentioned steps 203.Shown in Fig. 7 a, at first, adhere on the bonding film 12 of described first loading plate 10 by vacuum pick 16 an auxiliary package board 17 that will have utensil receiving opening 36, and described magnetic head rectangular bar 14 is exposed from described utensil receiving opening 36, thereby form the structure shown in Fig. 7 b.Then, shown in Fig. 7 c, by point gum machine (glue dispenser) 18 with packaging plastic, such as ultraviosensitive ultraviolet curing glue (UV-curing glue) 19 is injected in the utensil receiving opening 36 of described auxiliary package board 17, make described ultraviolet curing glue 19 flow in the gap (not label) between the described magnetic head rectangular bar 14 and on the second surface 152 of magnetic head rectangular bar 14.Fig. 7 d has showed that structure is along the cut-away view of Z-Z direction shown in Fig. 7 c.As shown in the figure, described ultraviolet curing glue 19 is filled in the gap that reaches between utensil receiving opening 36 and the magnetic head rectangular bar 14 between the magnetic head rectangular bar 14, and is covered in the second surface 152 of magnetic head rectangular bar 14.
Here, described auxiliary package board 17 is preferably formed by materials such as stupalith, stainless steel, condensate (polymer) or reinforced plasticss, so that enough structural strengths are provided, solidify the thermal deformation that the high temperature (such as the temperature greater than 60 degree) that produces when glue 19 solidifies causes thereby can resist subsequent handling (ultraviolet irradiation process) middle-ultraviolet lamp.In addition, described utensil receiving opening 36 also is not limited to square shown in the figure, and other any suitable shape that can hold all magnetic head rectangular bars 14 all can.In addition, can realize evenly being coated with fast the purpose of ultraviolet curing glue 19 by the parameters such as jet size, ejection pressure and spouting velocity of control point gum machine 18, thereby accelerate process flow.
Fig. 8 a-8c has showed the implementation procedure of above-mentioned steps 204.In this step, be placed into the second surface 152 of magnetic head rectangular bar 14 by appropriate device such as vacuum pick 20 second loading plate 21 that can allow ultraviolet ray see through, and second loading plate 21 bonded to this second surface 152 by ultraviolet curing glue 19.14 of described magnetic head rectangular bars are positioned on the bonding film 12 of first loading plate 10.Fig. 8 b has showed the state after second loading plate 21 adheres to second surface 152.Fig. 8 c has showed the cut-open view of the described structure of Fig. 8 b along the D-D direction.Here, described second loading plate 21 is as the carrier of above-mentioned all magnetic head rectangular bars 14.
Fig. 9 a-9b has showed the implementation procedure of above-mentioned steps 205.In this step, at first, utilize ultraviolet ray 40 to pass described first loading plate 10 and shine its bonding film 12, allow ultraviolet 40 to pass described second loading plate 21 and shine ultraviolet curing glue 19 simultaneously.Here, because first loading plate 10 and second loading plate 21 be by can forming for the material that ultraviolet ray is passed, so ultraviolet 40 can pass first loading plate 10 and second loading plate 21 and shine on described bonding film 12 and the ultraviolet curing glue 19.This irradiation makes ultraviosensitive bonding film 12 forfeiture viscosity, thereby makes first loading plate 10 lose bonding effect to magnetic head rectangular bar 14; Described ultraviolet curing glue 19 then passes through certain hour and full solidification, thereby second loading plate 21, auxiliary package board 17 and all magnetic head rectangular bars 14 are packaged together mutually.Then, first loading plate 10 that bonding film 12 reaches and this bonding film is bonding of losing viscosity is removed, thereby form the packaging body 900 that constitutes by second loading plate 21, auxiliary package board 17, ultraviolet curing glue 19 and all magnetic head rectangular bars 14, shown in Fig. 9 b.
Figure 10 has showed that respectively the air bearing face of the magnetic head rectangular bar combination that is formed by classic method and the inventive method forms the surface scan performance plot of face.As shown in the figure, represent the curve 30 of the surface scan characteristic of magnetic head rectangular bar combination of the present invention, more Paint Gloss than the curve 31 of the surface scan characteristic of representing the combination of classic method magnetic head rectangular bar.In other words, use the inventive method can obtain the magnetic head rectangular bar more desirable and make up comprehensive surface planarity than classic method.
Compare with classic method, because the present invention forms face as the position reference face with the air bearing face of magnetic head rectangular bar, be positioned at same plane between all air bearing face formation faces in the process always, therefore good comprehensive flatness can be kept, thereby the machining precision of magnetic head air loading end can be improved; Secondly, owing to adopt ultraviolet radiation modality, rather than the solution immersion way is eliminated being connected between magnetic head rectangular bar and the interim carrying tool (first loading plate 10 with tacky surfaces), and ultraviolet radiation modality is very little to the destruction of magnetic head, therefore the destruction that reduces or avoided process that magnetic head is caused; In addition,, therefore reduced process time, improved working (machining) efficiency because fixing between fixing and second loading plate 21 and the magnetic head rectangular bar 14 between the magnetic head rectangular bar carried out simultaneously.
With reference to Figure 11, according to one embodiment of present invention, a kind of magnetic head manufacturing method comprises the steps: to provide first loading plate (step 301) with tacky surfaces; Yoke long strips is provided, and each magnetic head rectangular bar has the first surface that is used to form the air bearing face and reaches and this first surface opposing second surface; Described magnetic head rectangular bar is fixed to first loading plate, makes first surface towards tacky surfaces (step 302); Packaging plastic is provided and is filled into it on second surface of magnetic head rectangular bar and in the gap between the magnetic head rectangular bar (step 303); Second loading plate is provided and it is bonded to the second surface (step 304) of magnetic head rectangular bar by above-mentioned packaging plastic; Shine first loading plate and packaging plastic with ultraviolet ray, thereby make first loading plate break away from magnetic head rectangular bar, and packaging plastic is solidified and magnetic head rectangular bar and second loading plate be fixed together (step 305); The first surface (step 306) of etching magnetic head rectangular bar; Described magnetic head rectangular bar is cut into independent magnetic head (step 307).
Above invention has been described in conjunction with most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.
Claims (10)
1. a method that in photoetching process magnetic head rectangular bar is coupled together comprises the steps:
(1) provides first loading plate with tacky surfaces;
(2) provide yoke long strips, each magnetic head rectangular bar has the first surface that is used to form the air bearing face and reaches and this first surface opposing second surface, and described magnetic head rectangular bar is fixed to first loading plate, makes first surface towards tacky surfaces;
(3) provide packaging plastic and be filled into it on second surface of magnetic head rectangular bar and in the gap between the magnetic head rectangular bar;
(4) provide second loading plate and it is bonded to the magnetic head rectangular bar second surface by above-mentioned packaging plastic;
(5) with ultraviolet ray irradiation first loading plate and packaging plastic, thereby make first loading plate break away from magnetic head rectangular bar, and packaging plastic is solidified and the magnetic head rectangular bar and second loading plate are fixed together.
2. method according to claim 1 is characterized in that described step (1) comprising:
(a) provide first loading plate with positioning reference plane;
(b) on above-mentioned positioning reference plane, laminate the bonding film of one deck as the tacky surfaces of described first loading plate;
(c) edge along first loading plate removes unnecessary bonding film.
3. method according to claim 2 is characterized in that described step (3) comprising:
(i) the auxiliary package board that will have a utensil receiving opening adheres on the bonding film of first loading plate, and magnetic head rectangular bar is exposed from utensil receiving opening;
Packaging plastic (ii) is provided and it is filled in the utensil receiving opening, packaging plastic is flow on the second surface of magnetic head rectangular bar and in the gap between the magnetic head rectangular bar.
4. method according to claim 3 is characterized in that: described packaging plastic is a ultraviolet curing glue.
5. method according to claim 3 is characterized in that: described auxiliary package board is formed by stupalith, stainless steel, condensate or plastics.
6. method according to claim 3 is characterized in that described step (5) comprising:
Shine first loading plate and packaging plastic with ultraviolet ray, make the bonding film forfeiture viscosity of first loading plate, packaging plastic is solidified and the magnetic head rectangular bar and second loading plate are fixed up;
First loading plate is removed from magnetic head rectangular bar.
7. a magnetic head manufacturing method comprises the steps:
(1) provides first loading plate with tacky surfaces;
(2) provide yoke long strips, each magnetic head rectangular bar has the first surface that is used to form the air bearing face and reaches and this first surface opposing second surface; Described magnetic head rectangular bar is fixed to first loading plate, makes first surface towards tacky surfaces;
(3) provide packaging plastic and be filled into it on second surface of magnetic head rectangular bar and in the gap between the magnetic head rectangular bar;
(4) provide second loading plate and it is bonded to the second surface of magnetic head rectangular bar by above-mentioned packaging plastic;
(5) with ultraviolet ray irradiation first loading plate and packaging plastic, thereby make first loading plate break away from magnetic head rectangular bar, and packaging plastic is solidified and the magnetic head rectangular bar and second loading plate are fixed together;
(6) first surface of etching magnetic head rectangular bar;
(7) described magnetic head rectangular bar is cut into independent magnetic head.
8. method according to claim 7 is characterized in that described step (1) comprising:
(a) provide first loading plate with positioning reference plane;
(b) on above-mentioned positioning reference plane, laminate the bonding film of one deck as the tacky surfaces of described first loading plate;
(c) edge along first loading plate removes unnecessary bonding film.
9. method according to claim 8 is characterized in that described step (3) comprising:
(i) the auxiliary package board that will have a utensil receiving opening adheres on the bonding film of first loading plate, and magnetic head rectangular bar is exposed from utensil receiving opening;
Packaging plastic (ii) is provided and it is filled in the utensil receiving opening, packaging plastic is flow on the second surface of magnetic head rectangular bar and in the gap between the magnetic head rectangular bar.
10. method according to claim 9 is characterized in that described step (5) comprising:
Shine first loading plate and packaging plastic with ultraviolet ray, make the bonding film forfeiture viscosity of first loading plate, packaging plastic is solidified and the magnetic head rectangular bar and second loading plate are fixed up;
First loading plate is removed from magnetic head rectangular bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101291847A CN101140761A (en) | 2006-09-06 | 2006-09-06 | Method for joining magnetic head rectangular bar in photoetching technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101291847A CN101140761A (en) | 2006-09-06 | 2006-09-06 | Method for joining magnetic head rectangular bar in photoetching technology |
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| Publication Number | Publication Date |
|---|---|
| CN101140761A true CN101140761A (en) | 2008-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101291847A Pending CN101140761A (en) | 2006-09-06 | 2006-09-06 | Method for joining magnetic head rectangular bar in photoetching technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101140761A (en) |
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2006
- 2006-09-06 CN CNA2006101291847A patent/CN101140761A/en active Pending
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Open date: 20080312 |