KR100783588B1 - Solderable electric contact terminal - Google Patents

Solderable electric contact terminal Download PDF

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Publication number
KR100783588B1
KR100783588B1 KR1020060109861A KR20060109861A KR100783588B1 KR 100783588 B1 KR100783588 B1 KR 100783588B1 KR 1020060109861 A KR1020060109861 A KR 1020060109861A KR 20060109861 A KR20060109861 A KR 20060109861A KR 100783588 B1 KR100783588 B1 KR 100783588B1
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South Korea
Prior art keywords
contact terminal
electrical contact
rubber
coating layer
polymer film
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Application number
KR1020060109861A
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Korean (ko)
Inventor
김선기
이승진
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조인셋 주식회사
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Priority to KR1020060109861A priority Critical patent/KR100783588B1/en
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Publication of KR100783588B1 publication Critical patent/KR100783588B1/en
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Abstract

Insulated foam rubber having a constant volume; An insulating non-foaming rubber coating layer bonded to surround the insulating foam rubber; And a heat-resistant polymer film adhered to the insulated non-foamed rubber coating layer to surround the insulated non-foamed rubber coating layer and having a metal layer integrally formed on a rear surface thereof.

Description

Solderable Electric Contact Terminal {Solderable Electric contact terminal}

1 is a cross-sectional view showing an electrical contact terminal 100 according to an embodiment of the present invention.

2 is a perspective view showing the electrical contact terminal 100 according to an embodiment of the present invention.

3 is a cross-sectional view showing a state in which the electrical contact terminal 100 of the present invention is actually applied.

4 shows another embodiment of the electrical contact terminal 100 of the present invention.

5 shows another embodiment of the electrical contact terminal 100 of the present invention.

6 is a cross-sectional view showing an electrical contact terminal 100 according to another embodiment of the present invention.

The present invention relates to an electrical contact terminal, and in particular, one side of the electrical contact terminal is fixed to the printed circuit board by soldering, and the other side of the electrical contact terminal is elastically contacted to the opposite object to electrically and mechanically connect the object and the printed circuit board. The present invention relates to a solderable resilient electrical contact terminal that connects automatically.

In general, solderable elastic electrical contact terminals should have good electrical conductivity, excellent elastic recovery, and be able to withstand soldering temperatures. To this end, conventionally, a metal material was mainly used as an electrical contact terminal capable of soldering. Among these metals, beryllium copper is widely used as an electrical contact terminal because of its good elastic recovery and excellent electrical conductivity. That is, a beryllium copper sheet having a thickness of 0.3 mm or less and a predetermined width were punched into a predetermined shape through a press die, and then an electrical contact terminal was manufactured to improve elastic recovery through heat treatment.

However, the electrical contact terminal made of only a metal sheet as described above has a disadvantage in that it cannot provide excellent elasticity under a certain height in view of the characteristics or structure of the metal. That is, in order to have elasticity, it is necessary to bend to a certain shape, and eventually, since most of the heights of the electrical contact terminals are determined by this bending height, it is impossible to provide elasticity below a certain height.

In particular, there has been a difficulty in providing a small size product having a height of 2 mm or less.

In addition, since one press mold can make a product of one shape, there is a disadvantage that an additional press mold is required to make another product.

In addition, when applied to a glass substrate coated with ITO made of a metal sheet has a disadvantage that the wound on the ITO.

Another conventional technology is a domestic utility model registration No. 2005-0012242 filed by the applicant. However, such an electrically conductive elastic rubber coating layer has a disadvantage that the electrical conductivity is worse than that of the metal. In order to improve the electrical conductivity, expensive metal powders such as silver (Ag) must be used, but the disadvantage is that the hardness is high and the manufacturing cost is high. In addition, there is a disadvantage that it is difficult to provide precise dimensions because it is made of only elastic rubber. In addition, there is a disadvantage that a separate metal foil must be provided for soldering.

Therefore, the present invention is proposed to solve these problems, and an object of the present invention is to provide an elastic electrical contact terminal that is excellent in elasticity and solderable even under a certain height.

In addition, another object of the present invention is to provide an elastic electrical contact terminal which is low in cost and good in electrical conductivity and solderable.

In addition, another object of the present invention is to provide an elastic electrical contact terminal capable of soldering a precise dimension with less damage to the ITO coated glass substrate.

Still another object of the present invention is to provide a solderable elastic electrical contact terminal having a flat surface in contact with an object to enable reflow operation by surface mounting.

Still another object of the present invention is to provide an elastic electrical contact terminal capable of soldering without wrinkles in a heat-resistant polymer film formed in a height direction when pressed by an object.

Other objects, features and advantages of the invention will be more clearly understood from the embodiments set forth below.

The above object is an insulating foam rubber having a certain volume; An insulating non-foaming rubber coating layer bonded to surround the insulating foam rubber; And a heat-resistant polymer film, wherein the one side is bonded to the insulated non-foamed rubber coating layer so as to surround the insulated non-foamed rubber coating layer, and the heat-resistant polymer film is integrally formed with the metal layer on the other side.

Preferably, one side of the electrical contact terminal in contact with the object is planar so that both ends of the heat-resistant polymer film are not separated or overlapped so as to be picked up by vacuum during surface mounting.

According to the present invention preferably the insulating foam rubber may be a silicone rubber, the hardness is Shore A 15 to 50, the thickness is 0.6mm to 15mm, the width is within 3mm to 20mm.

According to the present invention preferably the insulating non-foaming rubber coating layer may be a silicone rubber having a thickness between 0.03mm and 0.5mm, the hardness is Shore A 15 to 50.

According to the present invention, the non-insulating rubber coating layer may be formed while the liquid silicone rubber is cured. The liquid silicone rubber serves to bond the insulating foam rubber and the heat resistant polymer film after curing. More preferably, the liquid silicone rubber is cured by moisture in one component.

According to the present invention, the heat resistant polymer film may be a single-sided flexible printed circuit board (FPCB), preferably the heat resistant polymer film may be a polyimide film having a thickness between 0.01 mm and 0.04 mm, and the metal layer is between 0.002 mm and 0.02 mm. It may be copper having a thickness of. In addition, it is preferable that gold or the like be coated on the metal layer to prevent oxidation of the metal layer.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a cross-sectional view showing an electrical contact terminal 100 according to an embodiment of the present invention, Figure 2 is a perspective view.

As shown, the insulating foam rubber 10 has a polygonal cross section, for example, a quadrangle, and the insulating non-foaming rubber coating layer 20 is positioned between the insulating foam rubber 10 and the heat resistant polymer film 30 surface. By bonding the insulating foam rubber 10 and the heat-resistant polymer film 30 reliably. According to the present invention, the metal layer 40 is integrally formed on the rear surface of the heat resistant polymer film 30. For example, the heat resistant polymer film 30 is a single-sided flexible printed circuit board (FPCB).

Preferably, the metal layer 40 formed on the rear surface of the heat resistant polymer film 30 may improve the flexibility of the electrical contact terminal 100 by removing a portion of the metal layer by etching.

The manufacturing method of the electrical contact terminal which has such a structure is demonstrated.

A liquid silicone rubber that is cured by moisture on the surface of the heat-resistant polymer film 30 having a constant width having a metal layer 40 formed on the back side thereof is already cured on this coating layer while forming a coating layer with a thickness of 0.03 mm to 0.5 mm. Put the insulation foam rubber (10) manufactured in the form of a) and wrap it through a jig of a certain shape.

At this time, if the thickness of the coating layer of the liquid silicone rubber is too thin, the adhesion between the insulating foam rubber 10 and the heat-resistant polymer film 30 is bad, if the thickness of the coating layer is too thick takes a long time to cure the liquid silicone rubber. Has its drawbacks. In addition, when forming a coating layer with the liquid silicone rubber hardened by moisture, it is preferable to coat in nitrogen or a vacuum.

Then, by placing the heat-resistant polymer film 30 wrapping the insulating foam rubber 10 in a mold having dimensions similar to those of the insulating foam rubber 10 to cure the liquid silicone rubber coating layer interposed therebetween, the liquid silicone rubber layer While being cured, the non-foamed rubber coating layer 20 is changed. At this time, the insulating non-foaming rubber coating layer 20 serves to bond the insulating foam rubber 10 and the heat-resistant polymer film 30. That is, the liquid silicone coating layer serves as an adhesive non-foaming rubber coating layer 20 having elasticity while acting as an adhesive for bonding the insulating foam rubber 10 and the heat resistant polymer film 30 after curing in a mold having a predetermined dimension.

Since the liquid silicone rubber does not melt again by heat once cured, the original adhesive performance is maintained even when the electrical contact terminal 100 is soldered. At this time, in order to speed up the curing rate of the liquid silicone rubber located inside the mold while maintaining the temperature of the mold to about 60 ℃ to provide a lot of moisture by making a hole in the mold to improve the working speed. Preferred humidity is at least 60% relative humidity.

In addition, since the electrical contact terminal 100 is manufactured using the heat-resistant polymer film 30 having the metal layer 40 formed on the back side, long-length products have problems such as wrinkles. Since it is used by cutting to a length of 3mm to 30mm, the length of the liquid silicone rubber can be cut by the corresponding length before the complete curing to shorten the curing time. In addition, the use of the liquid silicone rubber cured by heat instead of the liquid silicone rubber cured by moisture can reduce the working time.

The outer surface of the electrical contact terminal 100 manufactured as described above is made of a metal layer 40, the electrical conductivity is very good to less than 0.01 Ω and soldering well. In this embodiment, since the polyimide is used as the heat resistant polymer film 30, the insulating foam rubber 10 and the insulating non-foaming rubber coating layer 20 use silicone rubber, thereby maintaining original performance when soldering. In addition, since the insulating foam rubber 10 or the non-insulated rubber coating layer 20 is a silicone rubber, it has excellent elastic recovery force, and in particular, the insulating foam rubber 10 inside is foamed and can be compressed even with a low force. Moreover, since it is produced in the fixed state by the said metal mold | die, the dimension is precise.

3 is a cross-sectional view showing a state in which the electrical contact terminal 100 of the present invention is actually applied.

One side of the electrical contact terminal 100 is soldered and fixed by reflow by the solder 210 to the printed circuit board 200, and the conductive object 300 is electrically and mechanically contacted on the opposite side of the soldered circuit as a result. As a result, the conductive object 300-the metal layer 40 formed on the back surface-solder 210-to form an electrical conductive path consisting of the printed circuit board 200. In addition, preferably the opposite of the portion of the electrical contact terminal 100 to be soldered to form a plane may provide a vacuum for surface mounting.

4 is a cross-sectional view showing an electrical contact terminal 100 according to another embodiment of the present invention. An electrical contact terminal 100 having a length longer than the entire circumferential length of the insulating foam rubber 10 and having a metal layer 40 formed on the rear surface thereof is prepared, and then placed in a mold widened by a length longer. to be.

In this case, the insulating non-foaming rubber coating layer 20 is formed on all surfaces of the heat-resistant polymer film 30 having the metal layer 40 formed on the rear surface thereof, but the hollow space 50 that does not contact the insulating foam rubber 10 in the longer part. This occurs. That is, since the liquid silicone rubber has an adhesive performance by curing only when the liquid silicone rubber is fixed by a mold for a predetermined time or more, the empty space 50 may be formed using the liquid silicone rubber. The empty space 50 makes it possible to prevent the heat-resistant polymer film 30 corresponding to the empty space 50 when the electrical contact terminal 100 is pressed by the object. In addition, since the width of the electrical contact terminal 100 can be adjusted by the empty space 50, the electrical contact terminal 100 having various widths can be made with the width of one insulating foam rubber 10, which is very economical. .

5 is a cross-sectional view showing an electrical contact terminal 100 according to another embodiment of the present invention. A portion of one side of the insulating foam rubber 10 was bonded to the insulating non-foamed rubber coating layer 20 and the heat-resistant polymer film 30 having the metal layer 40 formed on the back surface thereof. This is a phenomenon caused by the dimensional tolerance of the internal insulating elastic rubber (10).

6 is a cross-sectional view showing an electrical contact terminal 100 according to another embodiment of the present invention. The insulating non-foamed rubber coating layer 20 is not formed on the side portion of the insulating foam rubber 10, and the heat resistant polymer film 30 having the metal layer 40 formed on the rear surface thereof is not bonded. This may be an example caused by the dimensional tolerance of the internal insulation foam rubber.

Although the above description has been made with reference to an embodiment of the present invention, various changes or modifications can be made at the level of those skilled in the art. Such changes and modifications may belong to the present invention without departing from the scope of the present invention. It is intended that the scope of the invention be determined by the claims set forth below.

As described above, the present invention has various advantages and advantages as follows.

1. It is made of metal layer on the outside, so it has good electrical conductivity and soldering.

2. Consist of polyimide film, insulated silicone foam rubber and insulated silicone non-foamed rubber coating layer, each soldering performance can be maintained.

3. The insulating silicone non-foamed rubber coating layer is made of hardened liquid silicone rubber, so it cannot be melted again.

4. Insulation foam rubber is made of foam and can press the electrical contact terminal with little force.

5. The polyimide film having a metal layer formed on the back side uses a conventional single-sided flexible printed circuit board (FPCB) to reduce manufacturing costs.

6. The length of the electrical contact terminal can be cut with a knife to the desired length so that various sizes can be provided economically.

7. The metal layer formed on the back side has a low hardness due to the insulation foam rubber in the inner side, which has little effect on the ITO coated glass substrate.

8. The side facing the object is planar to facilitate vacuum during surface mounting.

9. The polyimide film with insulating foam rubber and metal layer on the back side is bonded with liquid silicone rubber to provide an economical process.

10. Flexibility of the electrical contact terminal is provided by partially providing a metal layer of the polyimide film having a metal layer formed on the back side by etching.

Claims (6)

  1. Insulated foam rubber having a constant volume;
    An insulating non-foaming rubber coating layer bonded to surround the insulating foam rubber; And
    A solderable elastic electrical contact terminal, comprising: a heat-resistant polymer film bonded to the insulated non-foamed rubber coating layer so that one side surrounds the insulated non-foamed rubber coating layer, and a metal layer is integrally formed on the other side.
  2. The method according to claim 1,
    The insulating foam rubber is a solderable elastic electrical contact terminal, characterized in that the silicone rubber.
  3. The method according to claim 1,
    The insulating non-foaming rubber coating layer is a solderable elastic electrical contact terminal, characterized in that the liquid silicone rubber is cured in the state interposed between the insulating foam rubber and the heat-resistant polymer film.
  4. The method according to claim 1,
    The heat-resistant polymer film having a metal layer formed on the rear surface is a solderable elastic electrical contact terminal, characterized in that the cross-section flexible circuit board (FPCB).
  5. The method according to claim 1 or 4,
    Solderable elastic electrical contact terminal, characterized in that the material of the heat-resistant polymer film is polyimide.
  6. The method according to claim 1,
    Solderable elastic electrical contact terminal, characterized in that the reflow soldering by the surface mount to the metal layer.
KR1020060109861A 2006-11-08 2006-11-08 Solderable electric contact terminal KR100783588B1 (en)

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Application Number Priority Date Filing Date Title
KR1020060109861A KR100783588B1 (en) 2006-11-08 2006-11-08 Solderable electric contact terminal

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KR100783588B1 true KR100783588B1 (en) 2007-12-07

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100892720B1 (en) 2008-09-30 2009-04-15 조인셋 주식회사 Solderable elastic electric contact terminal
KR200446337Y1 (en) 2007-12-28 2009-10-20 조인셋 주식회사 Elastic conductive interface member
KR100993253B1 (en) * 2010-04-28 2010-11-10 김선기 Elastic electric contact terminal
WO2010134734A2 (en) 2009-05-18 2010-11-25 두성산업주식회사 Conductive contact terminal to be mounted on a substrate surface
KR101001355B1 (en) 2008-10-15 2010-12-14 조인셋 주식회사 Elastic conductive Contact Terminal for Surface Mount
KR101022037B1 (en) 2009-05-21 2011-03-16 조인셋 주식회사 Electric and Elastic Contact Terminal
KR101025791B1 (en) 2009-11-09 2011-04-04 조인셋 주식회사 Small electric contact and method of the same
US7931475B2 (en) 2008-03-07 2011-04-26 Joinset Co., Ltd. Solderable elastic electric contact terminal
WO2012169674A1 (en) 2011-06-08 2012-12-13 Choi Chul Soo Surface mounting gasket and method of manufacturing same
KR101314555B1 (en) 2011-12-30 2013-10-07 김선기 SMT compatible Elastomer Contact Terminal and Method for making the same
EP3093923A1 (en) 2015-05-15 2016-11-16 Joinset Co., Ltd Elastic electric contact terminal adapted to small size
KR101708787B1 (en) 2016-06-09 2017-02-21 박동배 Manufacturing method of electric conductive gasket for surface mount devices
US10128584B2 (en) 2015-03-23 2018-11-13 Joinset Co., Ltd. & Sun-Ki Kim Elastic electric contact terminal with improved environmental resistance and fabrication method therefor
CN109935984A (en) * 2017-12-18 2019-06-25 泰科电子(上海)有限公司 Elastic conduction terminal and its manufacturing method

Citations (6)

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Publication number Priority date Publication date Assignee Title
JPH06350282A (en) * 1993-06-08 1994-12-22 Kitagawa Ind Co Ltd Gasket for shielding electromagnetic wave
KR960012119B1 (en) * 1989-06-16 1996-09-12 그레고리 제이. 뮬러 Conductive gasket with flame and abrasion resistant conductive coating
JPH11346082A (en) 1998-06-03 1999-12-14 Takeuchi Kogyo Kk Shield soft-packing and electronic equipment provided therewith
KR200208434Y1 (en) 2000-05-30 2001-01-15 김만곤 a EMI gasket
KR100611327B1 (en) 2004-01-20 2006-08-11 조인셋 주식회사 electric conductive gasket
KR200428024Y1 (en) 2006-07-12 2006-10-04 주식회사 에이엠아이 씨 Conductive contactor for surface mount

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960012119B1 (en) * 1989-06-16 1996-09-12 그레고리 제이. 뮬러 Conductive gasket with flame and abrasion resistant conductive coating
JPH06350282A (en) * 1993-06-08 1994-12-22 Kitagawa Ind Co Ltd Gasket for shielding electromagnetic wave
JPH11346082A (en) 1998-06-03 1999-12-14 Takeuchi Kogyo Kk Shield soft-packing and electronic equipment provided therewith
KR200208434Y1 (en) 2000-05-30 2001-01-15 김만곤 a EMI gasket
KR100611327B1 (en) 2004-01-20 2006-08-11 조인셋 주식회사 electric conductive gasket
KR200428024Y1 (en) 2006-07-12 2006-10-04 주식회사 에이엠아이 씨 Conductive contactor for surface mount

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200446337Y1 (en) 2007-12-28 2009-10-20 조인셋 주식회사 Elastic conductive interface member
US7931475B2 (en) 2008-03-07 2011-04-26 Joinset Co., Ltd. Solderable elastic electric contact terminal
KR100892720B1 (en) 2008-09-30 2009-04-15 조인셋 주식회사 Solderable elastic electric contact terminal
KR101001355B1 (en) 2008-10-15 2010-12-14 조인셋 주식회사 Elastic conductive Contact Terminal for Surface Mount
KR101054251B1 (en) * 2009-05-18 2011-08-08 두성산업 주식회사 Conductive Contact Terminals for Board Surface Mount
WO2010134734A2 (en) 2009-05-18 2010-11-25 두성산업주식회사 Conductive contact terminal to be mounted on a substrate surface
WO2010134734A3 (en) * 2009-05-18 2011-03-03 두성산업주식회사 Conductive contact terminal to be mounted on a substrate surface
CN102428767A (en) * 2009-05-18 2012-04-25 斗星产业株式会社 Conductive Contact Terminal To Be Mounted On A Substrate Surface
EP2434859A4 (en) * 2009-05-18 2014-10-01 Doo Sung Ind Co Ltd Conductive contact terminal to be mounted on a substrate surface
EP2434859A2 (en) * 2009-05-18 2012-03-28 Doo Sung Industrial Co., Ltd. Conductive contact terminal to be mounted on a substrate surface
KR101022037B1 (en) 2009-05-21 2011-03-16 조인셋 주식회사 Electric and Elastic Contact Terminal
KR101025791B1 (en) 2009-11-09 2011-04-04 조인셋 주식회사 Small electric contact and method of the same
US8461455B2 (en) 2010-04-28 2013-06-11 Joinset Co., Ltd. Elastic electric contact terminal
KR100993253B1 (en) * 2010-04-28 2010-11-10 김선기 Elastic electric contact terminal
WO2012169674A1 (en) 2011-06-08 2012-12-13 Choi Chul Soo Surface mounting gasket and method of manufacturing same
KR101314555B1 (en) 2011-12-30 2013-10-07 김선기 SMT compatible Elastomer Contact Terminal and Method for making the same
US10128584B2 (en) 2015-03-23 2018-11-13 Joinset Co., Ltd. & Sun-Ki Kim Elastic electric contact terminal with improved environmental resistance and fabrication method therefor
EP3093923A1 (en) 2015-05-15 2016-11-16 Joinset Co., Ltd Elastic electric contact terminal adapted to small size
KR101708787B1 (en) 2016-06-09 2017-02-21 박동배 Manufacturing method of electric conductive gasket for surface mount devices
CN109935984A (en) * 2017-12-18 2019-06-25 泰科电子(上海)有限公司 Elastic conduction terminal and its manufacturing method

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