JP5294961B2 - Thermally assisted magnetic recording head gimbal assembly and information recording / reproducing apparatus including the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head gimbal assembly capable of making respective connection at low cost between a near-field optical element in a slider and a light source out of the slider, and between a magnetic pole and a reproduction element in the slider and an electric wiring out of the slider. <P>SOLUTION: A positioning section 401 for wrapping a tip part of an optical fiber 206 is arranged between a flexure 204 and the slider 2, and the electric wiring 502 is disposed at the side surface of the positioning section 401 to make electrical connection between the magnetic pole or the reproduction element provided at the slider 2 and a flexible wiring 13 on the flexure 204. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a head gimbal assembly that records and reproduces various kinds of information on a recording medium using spot light that has condensed light, and an information recording / reproducing apparatus including the head gimbal assembly.

  In recent years, a recording medium such as a hard disk in a computer device has been demanded to have a higher density in response to a need for recording and reproducing a larger amount of high-density information. For this reason, in order to minimize the influence of adjacent magnetic domains and thermal fluctuations, those having a strong coercive force have begun to be adopted as recording media. Therefore, it has been difficult to record information on the recording medium.

  Therefore, in order to eliminate the above-described problems, the coercive force is temporarily reduced by locally heating the magnetic domain using spot light that has collected light, or near-field light that has collected light, In the meantime, an information recording / reproducing apparatus of a hybrid magnetic recording system for performing writing on a disk is provided. In particular, when near-field light is used, it is possible to handle optical information in a region that is less than or equal to the wavelength of light, which is a limit in conventional optical systems. Therefore, it is possible to achieve a higher recording bit density than conventional optical information recording / reproducing apparatuses.

  Various types of information recording / reproducing apparatuses based on the hybrid magnetic recording method described above are provided, and as one of them, by supplying light for generating near-field light to the near-field light element, There is known an information recording / reproducing apparatus capable of generating sufficiently large near-field light from a minute aperture and achieving super-high resolution reproduction / recording, high-speed recording / reproduction, and high SN ratio. In this information recording / reproducing apparatus, a slider provided with a near-field light element is scanned over a recording medium, and the slider is arranged at a desired position on the recording medium. Thereafter, information can be recorded on the recording medium by cooperating the near-field light emitted from the light source and the recording magnetic field generated from the slider.

  Here, as a configuration for supplying a light beam to the near-field element, for example, as shown in Patent Document 1, a substrate (light source support substrate) to which a laser is connected is attached to a slider including the near-field light element. The configuration is known. In addition, as shown in Patent Document 2, a configuration is also known in which an optical waveguide such as an optical fiber is connected to a slider having a near-field light element and a substrate having a mirror function (mirror substrate) is attached. .

JP 2008-59696 A JP 2006-323908 A

  However, in the above-described head gimbal assembly according to the prior art, a substrate for holding an optical system such as a laser, an optical waveguide, and a mirror is provided between the slider and the suspension in order to supply a light beam to the near-field light element. In addition, it is difficult to electrically connect a magnetic pole that generates a recording magnetic field provided on the slider or a reproducing element that reproduces information on the recording medium and an electric wiring on the suspension.

  For example, in FIG. 2 of Patent Document 1, the electrode pad connected to the magnetic pole or the reproducing element and the electric wiring on the suspension are connected by the bonding wire so as to straddle the above-mentioned substrate. The method is not used in the current information recording / reproducing apparatus (hard disk drive), and newly adopting it leads to an increase in manufacturing cost.

  The present invention has been made in view of such circumstances, and its purpose is to provide a near-field light element in the slider, a light source outside the slider, a magnetic pole and reproducing element in the slider, and an electric wiring outside the slider. It is an object to provide a head gimbal assembly and an information recording / reproducing apparatus including the head gimbal assembly that can be connected at low cost.

In order to achieve the above object, the present invention provides the following means.
A head gimbal assembly for heat-assisted magnetic recording according to the present invention includes a suspension extending along the surface of the recording medium, and a slider disposed on the leading end side of the suspension so as to face the surface of the recording medium. An optical waveguide connected to the slider; a first electrical wiring provided on the suspension; and a flat surface used for positioning the optical waveguide and the slider between the suspension and the slider. And a second electrical wiring that connects the slider and the first electrical wiring on a surface of the positioning portion.

In the head gimbal assembly for heat-assisted magnetic recording according to the present invention, the second electrical wiring is provided in the positioning portion, so that the electrical connection between the first electrical wiring provided on the suspension and the slider is suspended. Although the positioning portion is provided between the slider and the slider, it can be realized by the conventional method of ball bonding. Therefore, it is possible to reduce processing man-hours and manufacturing costs and improve manufacturing efficiency.
Further, since the positioning portion is provided, the optical waveguide can be disposed between the suspension and the slider, and light guided by the optical waveguide can be easily introduced into the slider. That is, the electrical connection and the optical connection can be easily realized by the positioning portion and the second electrical wiring provided on the surface thereof.

  In the thermally assisted magnetic recording head gimbal assembly according to the present invention, the tip surface of the optical waveguide is formed with a reflective film that reflects the light beam introduced into the optical waveguide toward the slider. It is characterized by.

  In the head gimbal assembly for heat-assisted magnetic recording according to the present invention, the light guided by the optical waveguide can be efficiently introduced into the slider by providing the reflection film on the tip surface of the optical waveguide.

  In the thermally assisted magnetic recording head gimbal assembly according to the present invention, one of the surfaces of the positioning portion is flush with the tip surface, and the second electrical wiring and the reflective film are the same. It is provided on a plane.

  In the heat-assisted magnetic recording head gimbal assembly according to the present invention, since the second electric wiring and the reflective film are provided on the same plane, the number of processing steps can be reduced and the manufacturing cost can be reduced. I can do it.

  In the thermally assisted magnetic recording head gimbal assembly according to the present invention, the second electrical wiring and the reflective film have the same film thickness.

  In the head gimbal assembly for thermally assisted magnetic recording according to the present invention, the second electrical wiring and the reflective film have the same film thickness, so that batch processing can be performed. Therefore, the manufacturing cost can be reduced.

  In the thermally assisted magnetic recording head gimbal assembly according to the present invention, at least a part of the second electrical wiring is provided on a surface of the positioning portion facing the suspension. It is what.

  In the head gimbal assembly for heat-assisted magnetic recording according to the present invention, at least a part of the second electric wiring is arranged to face the suspension, and the second electric wiring and the second electric wiring provided on the suspension are arranged. One electrical wiring can be arranged to face each other. Thereby, since electrical connection can be easily performed, a head gimbal assembly with stable performance can be manufactured at low cost.

  In the thermally assisted magnetic recording head gimbal assembly according to the present invention, the second electrical wiring is connected in contact with the first electrical wiring.

  In the heat-assisted magnetic recording head gimbal assembly according to the present invention, since the first electric wiring and the second electric wiring are contact-connected, the electric connection can be easily performed. Therefore, a head gimbal assembly having stable performance can be manufactured at low cost.

  In the thermally assisted magnetic recording head gimbal assembly according to the present invention, at least a part of the second electric wiring is provided on a surface of the positioning portion facing the slider. It is what.

  In the thermally assisted magnetic recording head gimbal assembly according to the present invention, since the second electrical wiring is disposed on the surface of the positioning portion facing the slider, the electrical wiring between the second electrical wiring and the slider is easy. become. Therefore, the yield at the time of manufacture can be improved. In the thermally assisted magnetic recording head gimbal assembly according to the present invention, the surface of the positioning portion includes a common surface that is flush with the tip surface, and a wiring surface on which the second electrical wiring is provided. The common plane and the wiring plane may have different inclinations. Furthermore, the head gimbal assembly for heat-assisted magnetic recording according to the present invention includes a plurality of the positioning portions, and each of the positioning portions is arranged in parallel to the optical waveguide, and even if the optical waveguide is sandwiched therebetween, good.

  An information recording / reproducing apparatus according to the present invention comprises the above-described head gimbal assembly for heat-assisted magnetic recording according to the present invention and the recording medium.

In the information recording / reproducing apparatus according to the present invention, after rotating the recording medium, the carriage is rotated around the pivot shaft to scan the slider supported by the suspension. Then, the slider is arranged at a desired position on the recording medium. Thereafter, a light beam is caused to enter the optical waveguide from the light source. As a result, various information can be recorded on and reproduced from the recording medium using the slider of the head gimbal assembly.
In particular, since the head gimbal assembly of the present invention is provided, information can be recorded and reproduced accurately and with high density, and high quality can be achieved. In addition, an information recording / reproducing apparatus having stable performance can be manufactured at low cost.

  According to the head gimbal assembly of the present invention, electrical connection and optical connection can be realized simultaneously and easily, so that the processing cost and the manufacturing cost can be reduced and the manufacturing efficiency can be improved. Therefore, a high-performance information recording / reproducing apparatus can be provided at low cost.

It is a block diagram which shows one Embodiment of the information recording / reproducing apparatus which concerns on this invention. It is a perspective view of the head gimbal assembly shown in FIG. FIG. 3 is an enlarged view of the head gimbal assembly shown in FIG. 2. It is sectional drawing which follows the A-A 'line of FIG. 3 which concerns on 1st Embodiment. It is a perspective view of the optical fiber and positioning part which concern on 1st Embodiment. It is sectional drawing which follows the B-B 'line of FIG. 5 which concerns on 1st Embodiment. It is a perspective view of the optical fiber and positioning part which concern on 2nd Embodiment. It is sectional drawing of the head gimbal assembly which concerns on 2nd Embodiment. It is a perspective view of the optical fiber and positioning part which concern on 3rd Embodiment. It is sectional drawing of the head gimbal assembly which concerns on 3rd Embodiment. It is a perspective view which shows another modification of the optical fiber which concerns on this invention, and a positioning part. It is a perspective view which shows another modification of the optical fiber which concerns on this invention, and a positioning part.

(First embodiment)
A first embodiment according to the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing an embodiment of an information recording / reproducing apparatus 1 according to the present invention. In addition, the information recording / reproducing apparatus 1 of this embodiment is an apparatus which writes with respect to the recording medium D which has a magnetic-recording layer with a heat-assisted magnetic recording system.

  As shown in FIG. 1, in the information recording / reproducing apparatus 1 of this embodiment, a suspension 3 to which a slider 2 is fixed is fixed to a carriage 11. The slider 2 and the suspension 3 are collectively referred to as a head gimbal assembly 12. The disc-shaped recording medium D is rotated in a predetermined direction by the spindle motor 7. The carriage 11 is rotatable about the pivot 10 and is rotated by an actuator 6 controlled by a control signal from the control unit 5, so that the slider 2 can be disposed at a predetermined position on the surface of the recording medium D. The housing 9 has a box shape made of aluminum or the like (in FIG. 1, the peripheral wall surrounding the periphery of the housing 9 is omitted for easy understanding), and the above components are stored therein. The spindle motor 7 is fixed to the bottom surface of the housing 9. The slider 2 includes a magnetic pole (not shown) that generates a magnetic field toward the recording medium D, a near-field light element (not shown) that generates a near-field light spot, and a reproducing element that reproduces information recorded on the recording medium D. (Not shown). The magnetic pole and the reproducing element are connected to the control unit 5 through the flexible wiring (first electric wiring) 13 laid along the suspension 3 and the carriage 11, the terminal 14 provided on the side surface of the carriage 11, and the flat cable 4. ing. The flexible wiring 13 includes a plurality of wirings.

  One recording medium D may be provided, but a plurality of recording media may be provided as shown in FIG. As the number of recording media D increases, the number of head gimbal assemblies 12 also increases. Although FIG. 1 shows a configuration in which the head gimbal assembly 12 is provided only on one side of the recording medium D, it may be provided on both sides. Therefore, the number of head gimbal assemblies 12 is at most twice the number of recording media D. Thereby, the recording capacity of the information recording / reproducing apparatus can be increased and the apparatus can be downsized.

  FIG. 2 is an enlarged view of the head gimbal assembly 12 according to the first embodiment. The suspension 3 includes a base plate 201, a hinge 202, a load beam 203, and a flexure 204, which are made of a thin stainless steel plate. The base plate 201 is fixed to the carriage 11 by mounting holes 201a provided in a part thereof. The hinge 202 connects the base plate 201 and the load beam 203. The hinge 202 is thinner than the base plate 201 and the load beam 203, and the suspension 3 is bent around the hinge 202. The flexure 204 is an elongate member fixed to the load beam 203 and the hinge 202, is thinner than the load beam 203 and the base plate 201, and is easily bent. A substantially rectangular parallelepiped slider 2 is fixed to the tip of the flexure 204. Further, the flexible wiring 13 is provided on the flexure 204. The flexible wiring 13 is formed by providing a plurality of electrical wirings made of a material such as copper, aluminum or gold on a resin insulating thin film such as polyimide. A laser 205 is disposed on the flexible wiring 13 in the vicinity of the attachment hole 201 a and is electrically connected to the flexible wiring 13. The laser 205 and the slider 2 are optically connected via an optical fiber 206. The laser 205 is driven by the electrical signal from the control unit 5, and the light from the laser 205 is guided to the near-field light element provided on the slider 2 by the optical fiber 206. The optical fiber 206 is freely supported in the longitudinal direction by a sleeve 207 fixed on the suspension 3. In FIG. 2, the laser 205 is installed in the vicinity of the attachment hole 201 a, but may be arranged in the vicinity of the carriage 11 or the control unit 5.

  The surface opposite to the surface fixed to the flexure 204 in the surface of the slider 2 is a surface facing the recording medium D. This surface is a surface that generates a pressure for the slider 2 to rise from the viscosity of the air flow generated by the rotating recording medium D, and is called ABS (Air Bearing Surface). An uneven shape (not shown) is provided on the ABS, and a desired pressure distribution is generated between the slider 2 and the recording medium D. The slider 2 floats in a desired state due to the balance between the positive pressure for separating the slider 2 from the recording medium D, the negative pressure for attracting the slider 2 to the recording medium D, and the pressing force of the suspension 3. The minimum clearance between the recording medium D and the slider 2 is about 10 nm or less. The pressing force by the suspension 3 is mainly generated by the elasticity of the hinge 202. Further, since the hinge 202 and the flexure 204 are bent with respect to the undulation of the surface of the recording medium D, a desired floating state can be maintained.

  FIG. 3 is an enlarged view of the vicinity of the slider 2 according to the first embodiment. Of the end portions of the slider 2, the root side (carriage 11 side) of the suspension 3 is called an inflow end 2a. The tip side of the opposite suspension 3 is called the outflow end 2 b of the slider 2. These are named based on the direction of the air flow by the recording medium D described above. A magnetic pole (not shown), a near-field light element (not shown), and a reproducing element (not shown) are provided on the side surface of the slider 2 on the outflow end 2b side. The flexible wiring 13 extending from the base of the suspension 3 is divided into two from the middle, and is connected to the magnetic pole and the reproducing element on the outflow end 2 b side so as to go around both sides of the slider 2. Conversely, the optical fiber 206 is inserted from the inflow end 2a side. This is because the optical fiber is generally weaker to bending than the electric wiring, and wiring that goes around the slider 2 cannot be performed.

  4 is a cross-sectional view taken along the line A-A 'of FIG. A positioning portion 401 made of a flat plate is provided at the tip of the optical fiber 206. The positioning portion 401 is fixed so as to be sandwiched between the flexure 204 and the slider 2. FIG. 5 is a perspective view showing the structure of the optical fiber 206 and the positioning portion 401. 6 is a cross-sectional view taken along line B-B ′ of FIG. 5.

  The configuration of the optical fiber 206 and the positioning unit 401 will be described below with reference to FIGS. 5 and 6. The front end surface of the optical fiber 206 and the front end surface 401a of the positioning portion 401 are configured to be flush with each other, and the front end surface 401a is inclined at 45 degrees with respect to the axial direction (longitudinal direction) of the optical fiber 206. ing. A reflective film 501 is formed on the front end surface of the optical fiber 206, and has a function of bending light guided by the optical fiber 206 by 90 degrees. In other words, this allows light from the optical fiber 206 to enter the slider 2 direction. The reflective film 501 uses aluminum, but other metal such as gold may be used. In addition, a configuration without using a reflection film is also possible, and in this case, light can be bent by total reflection at the end face of the optical fiber 206. A plurality of electrical wirings (second electrical wirings) 502 are provided on the front end surface 401 a so as to be adjacent to the reflective film 501. Processing can be facilitated by using the same material for the electrical wiring 502 as that of the reflective film 501, but a different material may be used. The optical fiber 206 includes a core 206a and a clad 206b covering the core 206a. By making the refractive index of the core 206a higher than that of the clad 206b, light can be guided along the core 206a. Each of the core 206a and the clad 206b has a concentric cross section, but a part of the clad 206b has a flat surface 206c that stretches a chord in the cross section of the clad 206b. The flat surface 206c is configured to be flush with the bottom surface 401b of the positioning portion 401. The light bent by the reflective film 501 is guided to the slider through the flat surface 206c. In order to assemble the positioning unit 401 and the optical fiber 206, after forming the positioning unit 401, a through hole is formed in the positioning unit 401, and the optical fiber 206 is assembled in the through hole, or the positioning unit 401 is molded. Sometimes, the tip of the optical fiber 206 can be molded. Thereafter, the positioning portion 401 and the optical fiber 206 are polished to form a flush bottom surface 401b and a flat surface 206c. Resin, a sintered material, a metal, etc. can be used for the material of the positioning part 401.

  Next, electrical connection in the vicinity of the positioning portion 401 will be described with reference to FIG. A plurality of electrodes 402 drawn from a magnetic pole (not shown) and a reproducing element (not shown) are exposed on the side surface of the slider 2 on the outflow end 2b side. In addition to the magnetic poles and reproducing elements, if there are elements to be driven, the number of electrodes 402 is increased accordingly. The electrical wiring 502 (not visible behind the reflective film 501 in FIG. 4) provided on the electrode 402 and the distal end surface 401 a of the positioning portion 401 is connected by ball bonding using a ball 403. There are as many electrical wires 502 as electrodes 402. Furthermore, the electrical wiring 502 and the flexible wiring 13 are also connected by ball bonding using the balls 404. The material of the balls 403 and 404 is gold, a gold alloy, solder, or the like. Thereby, the control unit 5 and the magnetic pole and the reproducing element are electrically connected.

Here, in the information recording / reproducing apparatus 1 of the present embodiment, the positioning unit 401 that wraps the tip of the optical fiber 206 is disposed between the flexure 204 and the slider 2, and the electrical wiring 502 is provided on the side surface of the positioning unit 401. Thus, the magnetic poles and reproducing elements provided on the slider 2 and the flexible wiring 13 on the flexure 204 are electrically connected.
According to this configuration, the electrical wiring 502 is provided, so that the electrical connection between the flexible wiring 13 and the magnetic pole and the reproducing element can be performed despite the positioning portion 401 being provided between the flexure 204 and the slider 2. It can be realized by the conventional method of ball bonding. Therefore, it is possible to reduce processing man-hours and manufacturing costs and improve manufacturing efficiency.
Further, since the positioning portion 401 is provided, the optical fiber 206 can be disposed between the flexure 204 and the slider 2, and the light guided by the optical fiber 206 can be easily introduced into the near-field light element provided in the slider 2. I can do it. That is, the electrical connection and the optical connection can be easily realized by the positioning portion 401 and the electrical wiring 502 provided on the side surface thereof.
Furthermore, since the information recording / reproducing apparatus 1 of the present invention includes the head gimbal assembly 12 described above, information can be recorded and reproduced accurately and at a high density, and the quality can be improved.

(Second Embodiment)
Next, a second embodiment of the present invention will be described based on FIGS. FIG. 7 is a perspective view of the optical fiber and the positioning portion in the second embodiment, and FIG. 8 is a cross-sectional view of the head gimbal assembly in the vicinity of the slider. In the following description, the same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 7, the difference from the first embodiment is that the electrical wiring 701 provided on the distal end surface 401 a of the positioning unit 401 extends to the upper surface 401 c of the positioning unit 401. Similar to the first embodiment, a plurality of electrical wires 701 are provided in accordance with the number of elements such as magnetic poles on the slider 2.

As shown in FIG. 8, the flexible wiring 702 formed on the flexure 204 extends so as to cover the electric wiring 701 on the upper surface 401 c of the positioning portion 401. The flexible wiring 702 and the electrical wiring 701 are electrically connected by contact. The electrical wiring 701 is made of a material such as gold, a gold alloy, aluminum, or copper. For example, by using gold-tin alloy and using gold for the electric wiring in the flexible wiring 702, the flexible wiring 702 and the electric wiring 701 can be contact-fixed by eutectic bonding. Further, the flexible wiring 702 and the electric wiring 701 can be fixed with solder or silver paste. The electrical wiring 701 is electrically connected to the electrode 402 by ball bonding using a ball 403.
In the present embodiment, in addition to the effects of the first embodiment described above, the number of ball bonding processes is reduced by one as compared with the first embodiment, so that the manufacturing can be performed at a lower cost.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a perspective view of the optical fiber and the positioning portion in the third embodiment, and FIG. 10 is a sectional view of the head gimbal assembly in the vicinity of the slider. In the following description, the same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIG. 9, the difference from the first embodiment is that an electrical wiring 901 provided on the distal end surface 401 a of the positioning unit 401 extends to a lower surface 401 b (not shown) of the positioning unit 401. Similar to the first embodiment, a plurality of electrical wires 901 are provided in accordance with the number of elements such as magnetic poles on the slider 2. The electrical wiring 901 uses a metal material such as aluminum, gold, a gold alloy, or copper.

  As shown in FIG. 10, the slider 2 is fixed to the lower surface 401b of the positioning portion 401, and similarly the position is adjusted so as not to interfere with the electric wiring 901 provided on the lower surface 401b. Thereby, the electrode 402 on the surface of the slider 2 and the electrical wiring 901 provided on the lower surface 401b are close to each other at an angle of 90 degrees. The electrical wiring 901 and the electrode 402 are electrically connected by ball bonding using a ball 902. Further, the electrical wiring 901 and the flexible wiring 13 are also electrically connected by ball bonding using the balls 404. The material of the balls 902 and 404 is gold, a gold alloy, solder, or the like.

  In this embodiment, in addition to the effects of the first embodiment described above, since the electrical wiring 901 and the electrode 402 are close to each other at an angle of 90 degrees, connection by ball bonding using the ball 902 is easy. It has become. Therefore, the yield at the time of manufacture can be improved.

  It should be noted that the technical scope of the present invention is not limited to the above-described embodiments, and includes those in which various modifications are made to the above-described embodiments without departing from the spirit of the present invention. In other words, the configuration described in the above-described embodiment is merely an example, and can be changed as appropriate. For example, the above-described embodiments can be appropriately combined and employed.

Moreover, as shown in FIG. 11, the front end surface 401d of the positioning portion 401 can be made vertical without being inclined. In this case, only the front end surface (common surface) 206d of the optical fiber 206 and the side surface (common surface) of the positioning portion 401 in the vicinity thereof are inclined at 45 degrees with respect to the axial direction (longitudinal direction) of the optical fiber 206. . The light guided by the optical fiber 206 is totally reflected by the distal end face 206d and bent by 90 degrees. The electrical wiring 1101 is provided on a vertical front end surface (wiring surface) 401d.
Note that the distal end surface 206d of the optical fiber 206 and the side surface of the positioning portion 401 in the vicinity thereof and the distal end surface provided with the electrical wiring 1101 are provided so that they are in a 45 degree relationship. It is not limited and may be provided at other angles. According to such a feature, the shape of the front end surface of the positioning unit 401 can be diversified, so that the shape of the front end surface of the positioning unit 401 can be designed in accordance with the outer shape of the slider 2. The positioning accuracy can be improved.

  Further, as shown in FIG. 12, the positioning portion 1201 may not be in contact with the optical fiber 206. The pair of positioning portions 1201 are provided so as to sandwich the optical fiber 206. The optical fiber 206 is fixed to the slider 2, and the positioning unit 1201 is fixed to the slider 2 and the flexure 204. The point that the electrical wiring 1202 is provided on the distal end surface 1201a of the positioning unit 1201 is the same as that of each of the above-described embodiments.

  In the above-described embodiment, the air floating type information recording / reproducing apparatus in which the slider is levitated has been described as an example. However, the present invention is not limited to this case. You may be in contact. That is, the slider of the present invention may be a contact slider type slider. Even in this case, the same effects can be achieved.

D recording medium 1 information recording / reproducing apparatus 2 slider 3 suspension 11 carriage 12 head gimbal assembly 13 flexible wiring 204 flexure 206 optical fiber 401 positioning portion 402 electrode 403, 404 ball 501 reflecting surface 502 electrical wiring

Claims (7)

A suspension extending along the surface of the recording medium;
A slider disposed on the front end side of the suspension so as to face the surface of the recording medium;
An optical waveguide connected to the slider;
A first electrical wiring provided on the suspension;
A positioning portion having a flat surface used for positioning the optical waveguide and the slider between the suspension and the slider;
Wherein the surface of the positioning unit is configured to connect the said slider first electric wiring, it has a second electric wire,
The front end surface of the optical waveguide is configured with a reflective film that reflects the light beam introduced into the optical waveguide toward the slider.
The surface of the positioning unit, without the front end surface flush with the second electric wiring, wherein the reflective film, heat-assisted magnetic recording head gimbals, wherein Rukoto provided on the same plane assembly. A suspension extending along the surface of the recording medium;
A slider disposed on the front end side of the suspension so as to face the surface of the recording medium;
An optical waveguide connected to the slider;
A first electrical wiring provided on the suspension;
A positioning portion having a flat surface used for positioning the optical waveguide and the slider between the suspension and the slider;
  On the surface of the positioning portion, there is a second electrical wiring that connects the slider and the first electrical wiring,
A head gimbal assembly for heat-assisted magnetic recording, wherein at least a part of the second electric wiring is provided on a surface of the positioning portion facing the suspension. It said second electrical wiring, the first heat-assisted magnetic recording head gimbal assembly of claim 2, wherein the electrical wiring is contact-connected. Wherein at least a portion of the second electrical wiring, of the surface of the positioning portion, the heat-assisted magnetic recording according to claim 1 or claim 2, characterized in that provided on the surface facing the slider For head gimbal assembly. The surface of the positioning portion includes a common surface that is coplanar with the tip surface, and a wiring surface on which the second electrical wiring is provided.
Wherein the common surface and the wiring surface, heat-assisted magnetic recording head gimbal assembly according to claim 1 or claim 2 respectively, characterized in that different slopes. 3. The heat assist according to claim 1, wherein a plurality of the positioning portions are provided, and each of the positioning portions is arranged in parallel to the optical waveguide, and sandwiches the optical waveguide. Head gimbal assembly for magnetic recording. An information recording / reproducing apparatus comprising the thermally assisted magnetic recording head gimbal assembly according to any one of claims 1 to 6 and the recording medium.

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