Source: https://patents.google.com/patent/KR101026556B1/en
Timestamp: 2020-08-05 10:38:06
Document Index: 354608472

Matched Legal Cases: ['art 2', 'art 2', 'art 2', 'art 2', 'art 54', 'art 56', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2']

KR101026556B1 - Sensor module - Google Patents
KR101026556B1
KR101026556B1 KR1020040089560A KR20040089560A KR101026556B1 KR 101026556 B1 KR101026556 B1 KR 101026556B1 KR 1020040089560 A KR1020040089560 A KR 1020040089560A KR 20040089560 A KR20040089560 A KR 20040089560A KR 101026556 B1 KR101026556 B1 KR 101026556B1
KR1020040089560A
KR20050044265A (en
그라브마이어플로리안
바이블렌쿠르트
베르만요한
보이텔한스외르크
슈미히프란츠
에메리히하랄트
오프터딩어클라우스
2003-11-07 Priority to DE2003152002 priority Critical patent/DE10352002A1/en
2003-11-07 Priority to DE10352002.3 priority
2004-11-05 Application filed by 로베르트 보쉬 게엠베하 filed Critical 로베르트 보쉬 게엠베하
2005-05-12 Publication of KR20050044265A publication Critical patent/KR20050044265A/en
2011-03-31 Publication of KR101026556B1 publication Critical patent/KR101026556B1/en
239000000057 synthetic resins Substances 0.000 claims abstract description 21
229920003002 synthetic resins Polymers 0.000 claims abstract description 21
230000001133 acceleration Effects 0.000 claims abstract description 7
229910000679 solders Inorganic materials 0.000 claims description 3
The present invention relates to a sensor module, in particular a sensor module for measuring acceleration and rotational speed, said sensor module comprising a housing base member (2) made of synthetic resin material and extending through the housing base member (2) and having a circuit board. A lead frame (11) having leads (10, 13) with connecting pins (14) provided for attachment to the at least one connecting pin (14), made of a conductive material and coupled to the base member (2); It consists of a cover 3 to be joined and a sensor device 7 and 9 in contact with the lead frame 11 via a conductor bond 12 and having at least one sensor chip 7.
The conductive cover combined with the connecting pin has a large shielding effect and a simple structure. In this case, the cover may be in direct contact with another connecting pin through the connecting pin, for example, when plugged into a circuit board.
The sensor module may be molded or may be provided in a pre-molded housing. The cover may be welded, glued or compressed with a contact with one ground lead in the corner or lead frame.
Housing base member, connecting pin, cover, conductor bond, sensor chip, sensor device, lead, sensor
Sensor module {SENSOR MODULE}
1A and 1B are cross-sectional views of a sensor module according to a first embodiment with a pre-molded housing and a clamped cover and a plan view with the cover partially open;
2A, 2B and 2C are cross-sectional views of a sensor module according to another embodiment having a pre-molded housing and a press-fit cover, a plan view with the cover partially open, and a detail view of the Z portion;
3A and 3B are cross-sectional views before and after assembly of a sensor module according to another embodiment with a pre-molded housing and lead ends inserted into the cover;
4A and 4B are a plan view and a cross-sectional view of a sensor module according to another embodiment having a pre-molded housing and a cover press-fitted into the press pins;
5A and 5B are cross-sectional and top views of a sensor module according to another embodiment with a pre-molded housing having conductive regions.
6A and 6B are cross-sectional and plan views of a sensor module according to another embodiment with a pre-molded housing consisting of a bottom and a conductive cover;
7 is a cross-sectional view of various embodiments with molded components.
FIG. 8A is a side cross-sectional view of another embodiment with a pre-molded housing formed under the housing and an embedded conductive cover. FIG.
8B is a front cross-sectional view of the embodiment of FIG. 8A.
9A-9D are detailed views of the portion Z of FIG. 8B in accordance with different embodiments.
FIG. 10 is a cross-sectional view of another embodiment of a premolded housing, a conductive cover, and a contact through a channel with a conductive adhesive. FIG.
Figure 11 is a cross sectional view of another embodiment with a pre-molded housing, a conductive cover, and contacts by contact pins inserted into the channel.
12A-12C are top plan perspective, bottom plan perspective, and exploded views of another embodiment with pre-molded housing and conductive cover.
1: sensor module
2: lower housing
3: metal cover
4: interior space
5: inside
7: sensor chip
9: ASIC
11: lead frame
12: conductor bond
13: ground lead
14: connecting pin
The present invention relates to a sensor module, and more particularly to a sensor module for measuring acceleration or rotational speed, preferably a sensor sensitive to electromagnetic waves.
Sensor modules that plug into a circuit board typically have connecting pins for connection on the plastic housing and the circuit board. In this case, the sensor chip or the sensor chip and the analysis chip are mounted on the lead frame and molded into a synthetic resin, or inserted into a pre-molding housing having an integrated lead frame sealed by one cover. For these two systems, electromagnetic compatibility (EMC) is generally difficult to achieve even with sufficient shielding. This is a problem, for example, when using a capacity reading sensor, for example, an acceleration sensor and a rotational speed sensor structurally micromechanical. In this case, the EMC capacitors can use the optimal strip conductor layout, external protection in the housing, or robust analysis circuitry and circuit principles. This also means that in areas where safety is a concern, especially in vehicles, the requirements for EMC are often not met, requiring significant optimization costs for these safety-critical sensors.
In contrast, the sensor module according to the present invention has the advantage of being able to use a standard circuit board mounting technique on the one hand and good protection of the sensor device against electromagnetic interference on the other hand. Preferably, the structure is relatively simple, easy to manufacture and inexpensive.
According to the invention, in a very simple way the structure is simpler and a higher shielding effect is achieved, in which a conductive cover (according to the invention can in principle provide some non-conductive area in addition to the conductive area) is provided by the connecting pin. By being combined, this is achieved by allowing the cover to be in direct contact with another connecting pin by means of the connecting pin when mounted to the circuit board. The cover thus reaches a defined potential, preferably a ground potential.
According to the first configuration, a pre-molded housing with a housing bottom and a cover can be used. In this case, the conductive cover is preferably inserted under the housing. According to an alternative second configuration here, the lead frame and the sensor device are molded, and a grounded die pad under the sensor device is molded to improve the shielding effect. One or more active or passive components or chips may be received into the housing.
The cover is connected to the ground connection of the sensor chip device on the one hand by the ground pin of the lead frame, and on the other hand is contacted with the ground pin of the lead frame which is formed on the protrusion extending downward from the cover and arranged next to it. A separate cover-connection pin may be provided.
Contact of the cover by the lead frame is made, for example, via a pin member that is bent upward for press fitting or clamping of the cover or its corresponding receiving device part, for example via a lead fork of the lead frame.
In addition, the base housing may be formed of a conductive synthetic resin having an insulating area used for penetration of the non-grounded pins of the lead frame, through which shielding in all directions or full shielding around the perimeter is achieved, for example For example, a clear structural simplification compared to the known structure by steel modules with glass guides.
In the case of molded sensor modules, the supplementary conductive cover is later covered or fused in advance to the resin base member. In the case of pre-molded housings, the cover can be press-fitted, clamped, glued, attached or directly soldered.
For all types of combinations, as well as pre-molded, as well as standard molded modules, the cover can be plugged into the part, covered or pierced deep into the side. In addition, complete shielding throughout the perimeter is achieved through electrically grounded conductive metal regions such that the conductive cover is bent or extended downwards.
According to the present invention, a plurality of grounding pins that are bent toward the cover form a grid of leads to reduce the EMC radiation of the sides.
The conductive cover can be a cover, in particular a deeply drawn cover, a conductive imprint, a film, or a layer. They are all made of a conductive material or include a conductive insertion layer and / or a conductive coating layer in a non-conductive matrix. What is important here is that the required shielding effect is achieved.
The conductive cover is preferably molded in such a way as to form part pins after assembly, for example after thermal caulking.
It is desirable to provide a supplementary ground surface on the circuit board below the sensor module.
In the configuration of the present invention, the contact between the conductive cover and the ground pin of the lead frame is a channel in the housing wall below the pre-molded housing, the holes of the cover and the ground pin, and the contacts extending through the channels and the holes, in particular the conductive adhesive or Through contact pins.
The invention is illustrated in the following examples on the basis of the accompanying drawings.
According to FIGS. 1A and 1B, the sensor module 1 comprises a pre-molded housing 2, 3 with a housing bottom 2 made of synthetic resin and a metal cover 3, between which an interior space 4 is located. ) Is formed. In the internal space 4, the sensor chip 7 and the analysis chip 9, for example, the application specific integrated circuit 9 (ASIC), are bonded to the inner surface 5 of the lower housing 2 by the adhesive layer 6. The chips are connected to each other and are connected in a known manner to the contact areas of the leads 10 and 13 of the lead frame 11 via the conductor bond 12. The lead frame 11 extends through the lower part of the housing 2 and extends into the connecting pin 14 protruding downward on the outer end by a known method for fixing to a circuit board not shown in the drawing. 13 and another lead 10.
The sensor chip 7 may in particular be an acceleration sensor with a microstructured component, for example an acceleration sensor with a vertically formed plate that is deformed according to its elasticity in the case of acting accelerations and rotational speeds. Read as a capacity. The interior space 4 may be empty or filled with air or partially or completely filled with a protective material, for example gel.
According to the invention, the lead frame 11 has at least partly an upwardly protruding metallic protrusion 15 (lead) and an end 16 which is partially deformed. The metal protrusion 15 is used to receive the metal cover 3, in which the metal cover is clamped between the metal protrusions in the insertion state shown in the drawing. In this case, the end portion 16 of the metal protrusion 15 is bent outward so that the cover 3 inserted from above is received while self-centering. The metal protrusion 15 can be freely projected or can extend through the housing lower part 2 in the lower region. Thus, according to the present invention, the metal cover 3 is electrically connected to the ground lead 13 which is also used as the ground connection portion of the analysis chip 9 via the metal protrusion 15 to be connected to the ground contact portion or the ground plane of the substrate. Can be.
In the embodiment shown in Figures 2A, 2B and 2C, the conductive cover 20 is inserted back into the housing lower part 2 and using the lower edge 21 of the cover, for example four plural leads. The fork 23 is clamped and brought into contact with the ground lead 13 via the lead fork 23. Although the chip is omitted in this drawing, which is a schematic drawing, in accordance with FIGS. 1A and 1B, the chip is adhesively fixed to the lower part of the housing and is in contact with the lead of the lead frame 11. Each lead fork 23 is provided with two upwardly protruding metal protrusions 24, which define a receiving opening 22 for the cover lower edge 21, for example a narrowly extending protrusion 25. Goes down to the center. The metal protrusions elastically receive the cover lower edge 21 to be inserted. As an alternative to the embodiment shown in the figures, the cover 20 is for example housed in a bridge protruding downward from the lead fork 23, rather than at the lower edge 21.
In the embodiment shown in FIGS. 3A and 3B, the metal cover 26 includes a slot 29 in the lower edge 21 through which the lead end 30 of the ground lead 13 penetrates when covered. As shown in FIG. 3B, this creates a large contact surface between the metal cover and the ground lead 13 extending over the entire periphery of the slot 29.
In the embodiment shown in FIGS. 4A and 4B, the end of the ground lead 13 is shaped as a press-fit pin 32 that rises vertically and protrudes from the lower part of the housing 2. The metal cover 33 includes a hole 34 into which the press-fit pin 32 is inserted when covering the cover. Here, the press-fit pins 32 of the ground lead 13 are used not only for fixing the metal cover 33 but also for electrical contact.
In the embodiment shown in Figs. 5A and 5B, the lower part of the housing 2 is a conductive region 35 made of a conductive synthetic resin or a synthetic resin material provided with a conductive supplement such as, for example, a fiber, and an insulating region of an electrically insulating synthetic resin. (36). The insulating region 36 of the housing lower part 2 encloses the lead 10 which is not connected to the ground according to the left part of FIG. 5A so that the chip 7 through the conductor bond 12 to the lead 10. , 9) electrical contact is possible. Insulating region 36 is used to penetrate lead 10 through conductive housing lower portion 2. As shown on the right side of FIGS. 5A and 5B, the ground pin 13 penetrates through the conductive region 35 of the lower housing 2 without electrical insulation, and is a metal or conductive material coupled to the lower housing 2. The conductive region 35 of the conductive cover 3 made of synthetic resin electrically connects them and is joined by a ground pin 13. This embodiment embodiment enables uniform and complete shielding of the chips 7, 9 down to a small insulating region 36.
In the case of the embodiment of Figs. 6A and 6B, the cover 3 made of a conductive material, for example a metal or a conductive synthetic resin, is bent downward so that the connecting pin 14 of the lead frame 11 is in a horizontal state. For example, a metal bridge 39 is fixed, through which the connection pin 37 is passed. Optionally for this two part configuration, the cover 3 and the bridge 39 may be integrally made of a conductive material. As a result, when the component is mounted on the circuit board, the ground lead 13 and the connection pins 14 and 37 of the bridge 39 may be jointly contacted with each other.
In the case of the embodiment of Figs. 7A to 7D, the sensor module in which the lead frame 11 having the chips 7 and 9 is fused or molded directly to the synthetic resin material is shown. The synthetic resin base member 40 from which the connecting pin 14 of 13 is protruded is made of a non-conductive synthetic resin. This molded part is used directly for mounting on a substrate in a known manner. According to the present invention, covers 41 and 42 each made of a conductive material, for example metal or conductive synthetic resin, are mounted.
In the case of the embodiment of Figs. 7A to 7C, the contact of the conductive cover 41 is caused by the press-fit pin 32 simultaneously used for the contact as in the embodiment shown in Figs. 4A and 4B. In the case of Figure 7 (a), the cover 41 is located on the synthetic resin base member (40). In the case of Figure 7 (b), the cover 41 is positioned above the corner of the synthetic resin base member (40). In the case of the embodiment of Fig. 7 (c), the conductive cover 41 is first placed on the press-fit pin 32 and then the synthetic resin base member 40 is subsequently injected, whereby the cover 41 is injected into the synthetic resin base member 40. do. In the case of the embodiment of Fig. 7D, the conductive cover 42 is brought into contact via the bridge 39 having the cover connecting pin 37 as in the embodiment of Figs. 6A and 6B. As a result, the cover 42 is easily positioned on the synthetic resin base member 40 and is brought into contact with the connecting pin 14 of the ground lead 13 by the cover connecting pin 37 on the substrate.
In the overall view of FIGS. 7A to 7D, the die pad 43, which is preferably connected to the ground lead 13, is located under the sensor devices 7, 9 and molded into the plastic member 40. FIG. The conductor bond 12 is lowered to increase the shielding effect.
Even in embodiments having a lower part of the pre-molded housing, in principle, a die pad is fused to the lower part of the pre-molded housing under the sensor device in order to increase the shielding effect.
The embodiments of Figs. 1A to 6B can be combined in principle to enhance the coupling to clamping effect, and can also be combined as in the embodiment of Figs. 7A to 7D.
8A, 8B and 9A-9D have a pre-molded housing bottom 2 of non-conductive synthetic resin and a wall 56 inserted into the bottom of the housing and made of a conductive material and extending almost vertically. A cover 53 is shown. At this time, the cover 53 can be manufactured inexpensively as a deep drawing member especially from sheet metal. It may also be produced, for example, by stamping and subsequent bending. This cover is joined with the housing lower part 2 via an adhesive part 54 according to the left part of FIG. 8b, and by form coupling according to the right part of FIG. 8b, for example shown by the lower part of the housing 2. Is coupled through a flange (55).
The cover lower edge 57 of the wall part 56 is provided in front and back on the inner surface 5 of the housing lower part 2 according to FIG. 8A. This cover edge 57 seen from the side extends over the ungrounded lead 10 according to the left side of FIG. 8B and is electrically coupled with the ground lead 13 according to the right side of FIG. 8B. Through the wall portion 56 of the cover 53, continuous shielding takes place back and forth and sideways.
The cover edge 57 is fixed on the ground lead 13 in a different way. At this time, the cover edge may be welded, soldered or fixed by the conductive adhesive 60 on the ground lead 13 according to Figs. 9A to 9D. If a conductive adhesive 60 is used, it is injected onto the ground lead 13 prior to covering the cover 53 and the contact 59 presses on the wet conductive adhesive 60 and finally cures.
The welding coupling between the cover 53 and the ground lead 13 is preferably made by resistance welding, in which a current is generated between the cover 53 and the ground lead 13 by the aid of an electrode so that both are coupled to each other. Done.
Alternatively, according to FIGS. 9A-9C, one contact portion 59 is formed, shaped or mounted in the cover edge 57 and inserted into the hole 61 of the ground lead 13. Cover edges 57-59 are welded to ground lead 13 in the embodiment of FIG. 9A and bonded through conductive adhesive 60 as in FIG. 9D in FIG. 9B. In the case of the embodiment of Fig. 9C, the contact portion 59 is formed into a rectangular cross section and pressed into the hole 61. The contact portion 59 and the hole 61 are sized such that the four edges 62 are deformed when press-fitted to form an electrical contact.
10 shows an embodiment in which the conductive cover 3 is placed on the lower part of the pre-molded housing 2 as opposed to the embodiment of FIGS. 1A to 6B. The ground pin 13 and the cover 3 of the lead frame are shown. Is made through the housing wall 69 of the housing lower part 2. In this case, the channels 70 through the passages penetrating from the bottom to the top are formed in the housing wall 69. Further, the holes 71 in the ground pin 13 of the lead frame and the holes 72 in the cover 3 are formed correspondingly, and these holes are aligned with the channel 70. A conductive adhesive is applied to the channel 70 and the holes 71 and 72 to form a conductive adhesive contact 74 between the cover 3 and the ground pin 3. The channel 70 in the housing lower part 2 is directly formed when casting the pre-molded housing lower part 2 to the housing wall 69, and also the holes 71, 72 can be prefabricated or cover the cover. It may be perforated before. After covering the cover 3 and flowing the conductive adhesive through the hole 72 formed in the cover 3, the channel 70 and the holes (71, 72) penetrates through the air to escape downward.
In the embodiment of Fig. 11, the channel 70 and the holes 71, 72 are formed to coincide as in Fig. 10. Finally, the contact pins 76 are installed in the channel 70 and the holes 71 and 72, and a contact action occurs between the ground pin 3 and the cover 3 of the lead frame.
In the embodiment of FIGS. 12A-12C, the conductive cover 3 has a clip arm 80 which clamps the housing lower part 2 back clamped by the rear clamping region 82 in the side region 84 without the lid 10. Is provided, which formally couples between the cover 3 and the housing lower part 2. In principle, alternatively to the illustrated rear clamping of the overall housing lower part 2, for example, a rear clamping may be made into the side wall groove of the housing lower part 2.
The other two sides of the housing lower part 2 are enclosed and fixed by the protruding extension 83 of the cover 3 as shown in the figure so that the cover 3 is prevented from escaping from the housing lower part 2. do. The cover 3 can be manufactured as a deep drawing part or by stamping or subsequent bending. This makes it possible to assemble the cover on the housing lower part 2 quickly, simply and safely, with the cover being positioned and clamped on the housing lower part 2 according to FIGS. 12C, 12A and 12B.
In this case, the cover 3 can be contacted by the clip arm 80 as in the embodiment of Fig. 7D. In addition, since the bottom 85 of the housing lower part 2 can be made conductive, this bottom face is brought into contact with the cover 3 by the clip arm 80, and the substrate, for example, the die of the substrate. It can be used to bond on the pad.
According to the invention, the sensor module can be used when mounted on a standard circuit board, there is an effect that can be well protected the sensor device against electromagnetic interference.
Leads with housing base members 2, 40 made of synthetic resin material and leads 10, 13 having connecting pins 14 extending through the housing base member 2 and provided for attachment to a circuit board. A frame 11, a cover 3, 20, 26, 33, 41, 42, 53 made of a conductive material and disposed on the base members 2, 40, and at least one sensor chip 7. A sensor module for measuring acceleration or rotational speed with one sensor device (7, 9),
The sensor devices 7, 9 are in contact with the lead frame 11 via a conductor bond 12, and the covers 3, 20, 26, 33, 41, 42, 53 are at least of the sensor module 1. Sensor module electrically connected with one connecting pin (14, 37).
Sensor module according to claim 1, characterized in that the cover (3, 42) is electrically connected with the cover connecting pin (37) for connection to the circuit board.
Sensor module according to claim 2, characterized in that the cover connecting pin (39) is in contact with the ground pin (13) of the lead frame (11).
Sensor module according to claim 1, characterized in that the cover (3, 20, 26, 33, 41, 53) is electrically connected with the ground lead (13) of the lead frame (11).
5. The lead frame (11) according to claim 4, characterized in that the lead frame (11) has at least one upwardly projecting metal projection with a bent end (16), and the cover (3) is clamped between the metal projections (15). Sensor module.
Sensor module (1) according to claim 4 or 5, characterized in that the cover (3) is press-fitted into the housing part (23) of the lead frame (11).
7. The sensor module according to claim 6, wherein the cover (3) is press-fitted into the opening of the accommodating device portion (23) of the lead frame (11).
Sensor module according to claim 6, characterized in that the housing lead (23) has at least two spaced apart metal projections (24) each for clamping the inserted cover (21).
Sensor module according to claim 4 or 5, characterized in that the cover (26) has a slot (29) into which the lead end (30) of the lead frame (11) is inserted on the underside of the cover (21).
Sensor module according to claim 4 or 5, characterized in that the cover (33) has an opening (34) into which the press-fit pin (32) of the lead frame (11) is press-fitted.
6. The base member 2 comprises a conductive region 35 and an insulating region 36, wherein the cover 3 has a conductive region (6). Positioned on 35 and extending through most of the base member 2 through which the ground lead 13 is guided through the conductive region 35, wherein the insulating region 36 is a further part of the lead frame 11. Sensor module characterized in that it surrounds the lid (10) and is guided through the conductive region (35).
6. The insulating synthetic resin according to claim 1, wherein the housing base member 40 is molded around the lead frame 11 and the sensor devices 7, 9 and on which the covers 41, 42 are placed. Sensor module, characterized in that the base member consisting of.
6. The base member (2) according to claim 1, wherein the base member (2) is a pre-molded housing lower part (2) and the sensor device parts (7, 9) are enclosed by the housing lower part (2) and the cover (3). 7. Sensor module, characterized in that located in the interior space (4).
Sensor module (1) according to claim 13, characterized in that the cover (3) is inserted towards the bottom of the housing (2).
Sensor module according to claim 13, characterized in that the cover is a deeply drawn cover (53) or a stamped and bent metal cover.
The sensor module (1) according to claim 13, wherein the cover (53) is fixed to the lower housing (2) by an adhesive part (54) or by a flange (55) formed in the lower housing (2).
Sensor module according to claim 13, characterized in that at least one contact (59) is formed or installed on the cover (53), which is inserted into the hole (61) of the ground lead (13).
18. The sensor module according to claim 17, wherein at least one contact portion (59) is pressed into the hole (61) with the edge (62) of the hole being deformed.
18. The sensor module according to claim 17, wherein the cover edge (57) or contact (59) is soldered by welding with the ground lead (13) or adhered via a conductive adhesive (54).
14. A channel (70) according to claim 13, characterized in that a channel (70) is formed in the housing wall of the lower part of the pre-molded housing (2) with conductive contacts (74, 76) formed between the cover (3) and the ground pin (13). Sensor module.
The ground pin 13, the cover 3, or the ground pin 13 and the cover 3 are formed with holes 71 and 72 leading to the channel 70 and the contact portion is formed with a hole 71. 72) and a channel extending through the channel (70).
21. The sensor module according to claim 20, wherein the conductive contact is a conductive adhesive contact (74) provided in the channel (70).
21. The sensor module of claim 20, wherein the conductive contact is a contact pin (76) press-fitted into the channel (70).
Sensor module according to claim 13, characterized in that the cover (3) is clamped with the housing lower part (2).
25. The sensor module according to claim 24, wherein the cover comprises a metal clip arm (80) for clamping the housing lower part (2) from the rear.
25. The sensor module according to claim 24, wherein the clip arm (80) or the conductive area (85) of the housing lower portion (2) in contact with the clip arm is provided for the connection of the circuit board.
KR1020040089560A 2003-11-07 2004-11-05 Sensor module KR101026556B1 (en)
DE2003152002 DE10352002A1 (en) 2003-11-07 2003-11-07 Sensor module
DE10352002.3 2003-11-07
KR20050044265A KR20050044265A (en) 2005-05-12
KR101026556B1 true KR101026556B1 (en) 2011-03-31
ID=34530157
KR1020040089560A KR101026556B1 (en) 2003-11-07 2004-11-05 Sensor module
US (1) US7323766B2 (en)
KR (1) KR101026556B1 (en)
DE (1) DE10352002A1 (en)
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