KR20020076697A - Multi Layer Ceramic Capacitor - Google Patents
Multi Layer Ceramic Capacitor Download PDFInfo
- Publication number
- KR20020076697A KR20020076697A KR1020010016763A KR20010016763A KR20020076697A KR 20020076697 A KR20020076697 A KR 20020076697A KR 1020010016763 A KR1020010016763 A KR 1020010016763A KR 20010016763 A KR20010016763 A KR 20010016763A KR 20020076697 A KR20020076697 A KR 20020076697A
- Authority
- KR
- South Korea
- Prior art keywords
- ceramic capacitor
- multilayer ceramic
- capacitance
- dielectric material
- thickness
- Prior art date
Links
- 239000003985 ceramic capacitor Substances 0.000 title claims abstract description 24
- 239000003989 dielectric material Substances 0.000 claims abstract description 16
- 239000011810 insulating material Substances 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 abstract description 8
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/30—Stacked capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/08—Inorganic dielectrics
- H01G4/12—Ceramic dielectrics
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Ceramic Capacitors (AREA)
Abstract
본 발명은 적층 세라믹커패시터(MLCC)에 관한 것으로, 일정한 두께(T)를 갖으며 내부전극(120) 및 외부전극(130)을 형성한 적층 세라믹커패시터(100)에 있어서, 상기 두께(T)는 1.25T 이상으로 형성되게 하고, 전극간 절연재로 저유전체(110)를 사용하여 고용량의 커패시턴스를 구현하도록 하는 것을 특징으로 한다.The present invention relates to a multilayer ceramic capacitor (MLCC), in the multilayer ceramic capacitor 100 having a predetermined thickness (T) and the internal electrode 120 and the external electrode 130, the thickness (T) is 1.25T or more, and using the low-k dielectric 110 as an inter-electrode insulating material to implement a high capacitance.
상기와 같은 본 발명에 따른 적층 세라믹커패시터에 의하면, 저유전체로도 고유전체와 같은 고용량의 커패시턴스를 구현할 수 있게 됨으로써 압전기효과에 대한 반응이 저감될 뿐만 아니라 마이크로포니 현상이 감쇄되거나 제거되어 텔레비전의 수상 성능을 안정되게 하는 탁월한 효과가 있다.According to the multilayer ceramic capacitor according to the present invention as described above, it is possible to implement a high-capacitance capacitance such as a high dielectric material even with a low dielectric material, thereby reducing the response to the piezoelectric effect as well as attenuating or eliminating the microphony phenomenon. It has an excellent effect of stabilizing performance.
Description
본 발명은 적층 세라믹커패시터(MLCC)에 관한 것으로, 더욱 상세하게는 두께를 더 두껍게 한 후 전극간 절연재로 저유전체를 사용하여 고유전체와 같은 고용량의 커패시턴스가 구현되도록 함으로써 마이크로포니(microphony) 현상을 감쇄시키거나 제거시키도록 한 적층 세라믹커패시터에 관한 것이다.The present invention relates to a multilayer ceramic capacitor (MLCC), and more particularly, to increase the thickness and then to realize a high-capacitance capacitance such as a high dielectric material by using a low dielectric material as an inter-electrode insulating material. A multilayer ceramic capacitor is provided for attenuating or removing.
주파수동기(FS; Frequency Synthesize) 동조방식에 사용되는 튜너에서는 필연적으로 위상동기루프(PLL; Phase Locked Loop) IC와 동조전압(VT; Voltage Tuning)을 공급하기 위해 루프필터(loop filter) 회로를 사용한다.Tuners used in the Frequency Synthesize (FS) tuning method inevitably use a loop filter circuit to supply a phase locked loop (PLL) IC and a voltage tuning (VT). do.
상기 루프필터회로에서는 고용량의 커패시턴스(capacitance)를 적층 세라믹커패시터(MLCC; Multi Layer Ceramic Capacitor)로 구현한다.In the loop filter circuit, a high capacitance capacitance is implemented as a multilayer ceramic capacitor (MLCC).
이러한 적층 세라믹커패시터는 유전체 세라믹 시트(sheet)를 다수개의 층으로 적층시킨 것으로, 종래의 적층 세라믹커패시터(1)는 도 1에 나타낸 바와 같이 고유전율의 물질로 이루어진 고유전체(10)와, 상기 고유전체(10)의 내측에 형성된 내부전극(20)과, 상기 고유전체(10)의 외측에 연결된 외부전극(30)으로 구성된다.The multilayer ceramic capacitor is formed by stacking a dielectric ceramic sheet into a plurality of layers. The conventional multilayer ceramic capacitor 1 has a high dielectric constant 10 made of a material having a high dielectric constant as shown in FIG. It consists of an internal electrode 20 formed inside the whole 10, and an external electrode 30 connected to the outside of the high-k dielectric 10.
이때, 상기 적층 세라믹커패시터(1)의 두께(t)는 통상적으로 0.75∼1.0t로 형성된다.At this time, the thickness t of the multilayer ceramic capacitor 1 is typically formed in the range of 0.75 to 1.0t.
또한, 상기 고유전체(10)는 전극간 절연재로 사용되는데, 물리적으로 압전기효과(piezo effect)에 민감한 특성을 지니고 있다.In addition, the high dielectric material 10 is used as an inter-electrode insulating material, and has a property that is physically sensitive to the piezo effect (piezo effect).
그런데, 상기와 같은 종래의 적층 세라믹커패시터(MLCC)는 형성되는 두께가 얇고 전극간 절연재로 고유전체를 사용하기 때문에 진동이나 떨림에 약한 특성을 나타내어 특정 주파수대역의 음향이 텔레비전 내에서 공명을 일으키는 경우 화상이 흔들리는 마이크로포니(microphony) 현상을 유발시키는 문제점이 있었다.However, the conventional multilayer ceramic capacitor (MLCC) as described above is thin in thickness and uses a high dielectric material as an inter-electrode insulating material, and thus exhibits weak characteristics against vibration and vibration, so that sound in a specific frequency band causes resonance in a television. There was a problem of causing an image shaking microphony (microphony) phenomenon.
본 발명은 상기와 같은 문제점을 해결하기 위하여 제안된 것으로서, 그 목적으로 하는 바는 적층 세라믹커패시터(MLCC)의 형성되는 두께를 더 두껍게 한 후 전극간 절연재로 저유전체를 사용하여 고유전체와 같은 고용량의 커패시턴스를 구현할 수 있도록 함으로써 압전기효과에 대한 반응이 저감될 수 있도록 할 뿐만 아니라 마이크로포니 현상을 감쇄시키거나 제거시키도록 하는데 있다.The present invention has been proposed to solve the above problems, and the object of the present invention is to increase the thickness of the multilayer ceramic capacitor (MLCC) to be thicker, and then use a low dielectric material as an inter-electrode insulating material to obtain a high capacity such as a high dielectric material. It is possible to reduce the response to the piezoelectric effect as well as to reduce or eliminate the microphony phenomenon by enabling the capacitance of.
도 1은 종래기술에 따른 적층 세라믹커패시터를 나타내는 단면도이다.1 is a cross-sectional view showing a multilayer ceramic capacitor according to the prior art.
도 2는 본 발명에 따른 적층 세라믹커패시터를 나타내는 단면도이다.2 is a cross-sectional view showing a multilayer ceramic capacitor according to the present invention.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
100: 적층 세라믹커패시터 110: 저유전체100: laminated ceramic capacitor 110: low dielectric
120: 내부전극 130: 외부전극120: internal electrode 130: external electrode
T : 두께T: thickness
상기와 같은 목적을 달성하기 위한 본 발명은 일정한 두께를 갖으며 내부전극 및 외부전극을 형성한 적층 세라믹커패시터에 있어서, 상기 두께는 1.25T 이상으로 형성되게 하고, 전극간 절연재로 저유전체를 사용하여 고용량의 커패시턴스를 구현하도록 하는 것을 그 기본 특징으로 한다.The present invention for achieving the above object is a multilayer ceramic capacitor having a predetermined thickness and formed the internal electrode and the external electrode, the thickness is formed to be 1.25T or more, using a low dielectric as an inter-electrode insulating material Its basic feature is to enable high capacitance capacitance.
위와 같이 구성된 본 발명의 바람직한 실시예를 도면을 참조하면서 상세히 설명하면 다음과 같다.Referring to the preferred embodiment of the present invention configured as described above in detail with reference to the drawings as follows.
도 2는 본 발명에 따른 적층 세라믹커패시터를 나타내는 단면도이다.2 is a cross-sectional view showing a multilayer ceramic capacitor according to the present invention.
도 2에 나타낸 바와 같이, 본 발명에 따른 적층 세라믹커패시터(100)는 저유전율의 물질로 이루어진 저유전체(110)와, 상기 저유전체(110)의 내측에 형성된 내부전극(120)과, 상기 저유전체(110)의 외측에 연결된 외부전극(130)으로 구성된다.As shown in FIG. 2, the multilayer ceramic capacitor 100 according to the present invention includes a low dielectric material 110 formed of a material having a low dielectric constant, an internal electrode 120 formed inside the low dielectric material 110, and the low dielectric constant. The external electrode 130 is connected to the outside of the dielectric 110.
이때, 상기 적층 세라믹커패시터(100)의 두께(T)는 1.25T 이상으로 형성되게 한다.In this case, the thickness T of the multilayer ceramic capacitor 100 is formed to be 1.25T or more.
또한, 상기 저유전체(110)는 전극간 절연재의 작용을 하게 된다.In addition, the low dielectric 110 serves as an inter-electrode insulating material.
따라서, 상기와 같은 본 발명에 따른 적층 세라믹커패시터(100)는 두께(T)를 더 뚜껍게 하고 전극간 절연재로 압전기효과에 덜 민감한 저유전체(110)를 사용함으로써 저유전체(110)로 고유전체를 사용했을 때와 같은 고용량의 커패시턴스를 구현할 수 있게 됨은 물론 마이크로포니 현상이 감쇄되거나 제거된다.Therefore, the multilayer ceramic capacitor 100 according to the present invention as described above has a high dielectric constant as the low dielectric material 110 by using a low dielectric material 110 that is thicker in thickness T and less sensitive to piezoelectric effects as an inter-electrode insulating material. The same high-capacitance capacitance as in the case of using the above can be realized, and the microphony phenomenon is attenuated or eliminated.
이상에서 살펴본 바와 같이 본 발명에 따른 적층 세라믹커패시터에 의하면, 적층 세라믹커패시터의 형성되는 두께를 더 두껍게 한 후 전극간 절연재로 저유전체를 사용함으로써 저유전체로도 고유전체와 같은 고용량의 커패시턴스를 구현할 수 있게 되어 압전기효과에 대한 반응이 저감될 뿐만 아니라 마이크로포니 현상이 감쇄되거나 제거되어 텔레비전의 수상 성능을 안정되게 하는 탁월한 효과가 있다.As described above, according to the multilayer ceramic capacitor according to the present invention, by increasing the thickness of the multilayer ceramic capacitor to be formed and using a low dielectric material as an inter-electrode insulating material, a high capacitance such as a high dielectric material can be realized even with a low dielectric material. In addition, the response to the piezoelectric effect is reduced, as well as the microphony phenomenon is attenuated or eliminated to have an excellent effect of stabilizing the water quality of the television.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020010016763A KR20020076697A (en) | 2001-03-30 | 2001-03-30 | Multi Layer Ceramic Capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020010016763A KR20020076697A (en) | 2001-03-30 | 2001-03-30 | Multi Layer Ceramic Capacitor |
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| Publication Number | Publication Date |
|---|---|
| KR20020076697A true KR20020076697A (en) | 2002-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020010016763A KR20020076697A (en) | 2001-03-30 | 2001-03-30 | Multi Layer Ceramic Capacitor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980080464A (en) * | 1997-03-19 | 1998-11-25 | 무라따미치히로 | Multilayer capacitors |
| JPH1167573A (en) * | 1997-08-26 | 1999-03-09 | Kyocera Corp | Laminated ceramic capacitor and its manufacture |
| KR20000003052A (en) * | 1998-06-25 | 2000-01-15 | 이형도 | External electrode forming of chip component |
| KR20010015337A (en) * | 1999-07-15 | 2001-02-26 | 무라타 야스타카 | Electronic Multilayer Ceramic Component |
-
2001
- 2001-03-30 KR KR1020010016763A patent/KR20020076697A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980080464A (en) * | 1997-03-19 | 1998-11-25 | 무라따미치히로 | Multilayer capacitors |
| JPH1167573A (en) * | 1997-08-26 | 1999-03-09 | Kyocera Corp | Laminated ceramic capacitor and its manufacture |
| KR20000003052A (en) * | 1998-06-25 | 2000-01-15 | 이형도 | External electrode forming of chip component |
| KR20010015337A (en) * | 1999-07-15 | 2001-02-26 | 무라타 야스타카 | Electronic Multilayer Ceramic Component |
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