KR100338867B1 - carbon black sheet - Google Patents
carbon black sheet Download PDFInfo
- Publication number
- KR100338867B1 KR100338867B1 KR1020010008461A KR20010008461A KR100338867B1 KR 100338867 B1 KR100338867 B1 KR 100338867B1 KR 1020010008461 A KR1020010008461 A KR 1020010008461A KR 20010008461 A KR20010008461 A KR 20010008461A KR 100338867 B1 KR100338867 B1 KR 100338867B1
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- KR
- South Korea
- Prior art keywords
- carbon black
- tcp
- electrode
- protective sheet
- lcd panel
- Prior art date
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- 239000006229 carbon black Substances 0.000 title claims abstract description 30
- 230000001681 protective effect Effects 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 14
- 229920002379 silicone rubber Polymers 0.000 claims description 11
- 239000004945 silicone rubber Substances 0.000 claims description 9
- 230000002950 deficient Effects 0.000 abstract description 4
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001971 elastomer Polymers 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000001723 curing Methods 0.000 description 11
- 238000005096 rolling process Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 7
- 238000000465 moulding Methods 0.000 description 7
- 238000003490 calendering Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000013007 heat curing Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- ZMHWQAHZKUPENF-UHFFFAOYSA-N 1,2-dichloro-3-(4-chlorophenyl)benzene Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC(Cl)=C1Cl ZMHWQAHZKUPENF-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
- G02F1/13452—Conductors connecting driver circuitry and terminals of panels
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/36—Assembling printed circuits with other printed circuits
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/50—Protective arrangements
Abstract
본 발명은 LCD제품의 제조시 사용되는 것으로 사용성이 우수하고 제품의 불량율을 낮출 수 있는 새로운 구성의 카본블랙 보호시트에 대한 것이다.The present invention relates to a carbon black protective sheet of a new configuration that can be used in the manufacture of LCD products and excellent in usability and can lower the defective rate of the product.
본 발명에 따르면, TCP(10)의 전극과 LCD패널(30)의 전극 사이에 ACF(40)를 위치시키고, 이들을 가열가압하여 TCP(10)의 전극을 LCD패널(30)의 전극에 접속시킬 때, 상기 TCP(10) 전극(16)의 상면에 배치되어 TCP(10)와 LCD패널(30)의 연결부위가 손상되지 않도록 하는 보호시트(50)에 있어서, 상기 보호시트(50)는 실리콘고무(52)에 카본블랙분말(54)이 함침되어 이루어진 것을 특징으로 하는 카본블랙 보호시트가 제공된다.According to the present invention, the ACF 40 is positioned between the electrode of the TCP 10 and the electrode of the LCD panel 30, and heated and pressurized to connect the electrode of the TCP 10 to the electrode of the LCD panel 30. At this time, the protective sheet 50 is disposed on the upper surface of the TCP (16) electrode 16 so that the connection between the TCP (10) and the LCD panel 30 is not damaged, the protective sheet 50 is silicon Carbon black protective sheet is provided, characterized in that the rubber 52 is impregnated with the carbon black powder 54.
Description
본 발명은 카본블랙 보호시트에 관한 것으로서, 보다 상세하게는 LCD제품의 제조시 사용되는 것으로 사용성이 우수하고 제품의 불량률을 낮출 수 있는 새로운 구성의 카본블랙 보호시트에 관한 것이다.The present invention relates to a carbon black protective sheet, and more particularly, to a carbon black protective sheet of a new configuration that can be used in the manufacture of LCD products excellent in usability and can lower the defective rate of the product.
최근에는 핸드폰이나 노트북컴퓨터와 같이, LCD 전자제품들의 사용량이 증가하고 있다. 이러한 LCD 제품에서 LCD패널의 전극은 도 1에 도시된 바와 같이, TCP(Tape Carrier Package)(10)에 의해 메인보드(20)쪽의 PCB(22)에 전기적으로 연결된다. 이때 사용되는 상기 TCP(10)는 집적회로(12)가 패키지화된 것으로, 그 입력측 전극은 상기 PCB(22)에 전기적으로 용접(Soldering)되고, TCP(10)의 출력측 전극은 ACF(Anisotropic Conductive Film : 이방성 도전필름)(40)에 의해 LCD패널(30)의 전극에 전기적으로 결합(Bonding)된다. 이때 상기 ACF(40)는 금으로 된 도전볼이 접착성 수지에 산포되어 있는 것으로, 이 도전볼은 얇은 절연막으로 둘러싸여 있다. 따라서 LCD패널(30)과 TCP(10)의 연결시에는 ACF(40)의 수지가 용융되고 도전볼의 절연막이 깨지도록 열압착기로 가열가압하여 LCD패널(30)과 TCP(10)를 전기적으로 연결한다.Recently, the use of LCD electronic products such as mobile phones and notebook computers is increasing. In this LCD product, the electrode of the LCD panel is electrically connected to the PCB 22 toward the main board 20 by a tape carrier package (TCP) 10, as shown in FIG. In this case, the TCP 10 used is an integrated circuit 12 packaged, and an input electrode thereof is electrically welded to the PCB 22, and an output electrode of the TCP 10 is an anisotropic conductive film. : Anisotropic conductive film) 40 is electrically bonded to the electrode of the LCD panel 30 (Bonding). At this time, the ACF 40 is a conductive ball made of gold is dispersed in the adhesive resin, the conductive ball is surrounded by a thin insulating film. Therefore, when the LCD panel 30 and the TCP 10 are connected, the resin of the ACF 40 is melted and heated and pressed with a thermocompressor to break the insulating film of the conductive ball, thereby electrically connecting the LCD panel 30 and the TCP 10. Connect.
한편, 이와 같이 ACF(40)를 이용해 TCP(10)를 LCD패널(30)에 연결시, 열압착기의 열이나 압력에 의해 LCD패널(30)의 전극이나 TCP(10)의 전극이 손상되는 것을방지하기 위해, 이들 연결부위를 별도의 보호시트(1)로 커버하고 열압착기로 가열가압한다. 이때 사용되는 보호시트(1)는 시트의 쿠션에 의해 상기 LCD패널(30)의 전극이나 TCP(10)의 전극이 손상되는 것을 방지하면서 동시에 열압착기의 열을 ACF(40)에 원활하게 전달시켜야 하므로, 일반적으로는 도 2에 도시된 바와 같이, 실리콘시트(2)의 양면에 카본블랙분말(3)이 도포된 것을 사용한다. 그러나 이러한 카본블랙분말(3)이 도포된 보호시트(1)를 사용하는 경우에는, 카본블랙분말(3)이 실리콘시트(2)에서 탈락되어 주변기기의 작동에 장애를 일으키고, LCD패널(30)과 TCP(10)의 연결불량으로 인한 제품불량이 초래되기도 하였다. 또한, 상기 보호시트(1)는 카본블랙분말(3) 사이에 열전도성이 낮은 실리콘시트(2)가 개재되어 있기 때문에 열압착기의 열이 ACF(40)에 원활하게 전달되지 않는 문제점이 있다.Meanwhile, when the TCP 10 is connected to the LCD panel 30 using the ACF 40 as described above, the electrode of the LCD panel 30 and the electrode of the TCP 10 are damaged by the heat or pressure of the thermocompressor. To prevent this, these connections are covered with a separate protective sheet 1 and heated and pressed with a thermocompressor. At this time, the protective sheet 1 to be used must prevent the electrode of the LCD panel 30 or the electrode of the TCP 10 from being damaged by the cushion of the sheet, and at the same time, smoothly transfer the heat of the thermocompressor to the ACF 40. Therefore, in general, as shown in FIG. 2, a carbon black powder 3 coated on both surfaces of the silicon sheet 2 is used. However, in the case of using the protective sheet 1 coated with the carbon black powder 3, the carbon black powder 3 is dropped from the silicon sheet 2, which causes a disturbance in the operation of the peripheral device, and the LCD panel 30 Product defects were also caused by poor connection between the TCP and the 10. In addition, the protective sheet 1 has a problem that the heat of the thermocompressor is not smoothly transferred to the ACF 40 because the silicon sheet 2 having low thermal conductivity is interposed between the carbon black powders 3.
본 발명은 상기의 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 압연에 의한 성형이 가능하여 코스트가 낮을 뿐만 아니라 작업성이 우수하여 제품의 불량률을 낮출 수 있는 새로운 구성의 카본블랙 보호시트를 제공하는 것이다.The present invention is to solve the above problems, an object of the present invention is to provide a carbon black protective sheet of a new configuration that can be formed by rolling, not only low cost but also excellent workability to lower the defective rate of the product It is.
도 1은 LCD패널과 TCP의 본딩과정을 보인 개략도Figure 1 is a schematic diagram showing the bonding process of the LCD panel and TCP
도 2는 종래 카본블랙 보호시트를 보인 확대단면도Figure 2 is an enlarged cross-sectional view showing a conventional carbon black protective sheet
도 3는 본 발명에 의한 카본블랙 보호시트를 보인 확대단면도이다.Figure 3 is an enlarged cross-sectional view showing a carbon black protective sheet according to the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
10. TCP 22. PCB10.TCP 22.PCB
30. LCD패널 40. ACF30.LCD Panel 40.ACF
50. 보호시트 52. 실리콘코무50. Protective sheet 52. Silicone rubber
54. 카본블랙분말54. Carbon Black Powder
본 발명에 따르면, TCP(10)의 전극과 LCD패널(30)의 전극 사이에 ACF(40)를 위치시키고, 이들을 가열가압하여 TCP(10)의 전극을 LCD패널(30)의 전극에 접속시킬 때, 상기 TCP(10) 전극(16)의 상면에 배치되어 TCP(10)와 LCD패널(30)의 연결부위가 손상되지 않도록 하는 보호시트(50)에 있어서, 상기 보호시트(50)는 실리콘고무(52)에 카본블랙분말(54)이 함침되어 이루어진 것을 특징으로 하는 카본블랙 보호시트가 제공된다.According to the present invention, the ACF 40 is positioned between the electrode of the TCP 10 and the electrode of the LCD panel 30, and heated and pressurized to connect the electrode of the TCP 10 to the electrode of the LCD panel 30. At this time, the protective sheet 50 is disposed on the upper surface of the TCP (16) electrode 16 so that the connection between the TCP (10) and the LCD panel 30 is not damaged, the protective sheet 50 is silicon Carbon black protective sheet is provided, characterized in that the rubber 52 is impregnated with the carbon black powder 54.
이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 설명하면 다음과 같다. 도 3은 본 발명의 바람직한 실시예를 보인 확대단면도이다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Figure 3 is an enlarged cross-sectional view showing a preferred embodiment of the present invention.
본 발명은 LCD패널(30)의 전극과 TCP(10)를 ACF를 이용해 본딩할 때, 열압착기의 고열이 TCP(10)에 직접 전달되지 않도록 TCP(10)를 커버하는 카본블랙 보호시트(50)에 관한 것이다.The present invention, when bonding the electrode of the LCD panel 30 and TCP (10) using the ACF, carbon black protective sheet 50 for covering the TCP (10) so that the high temperature of the heat press is not directly transmitted to the TCP (10) ).
이러한 상기 카본블랙 보호시트(50)는 다음과 같은 방법으로 제조된다. 먼저, 실리콘고무(52)와 카본블랙분말(54)을 혼합한다. 이때 바람직하게는 실리콘고무(52)와 카본블랙분말(54)을 약 6:4정도의 중량비로 혼합하는데, 실리콘고무(52)와 카본블랙분말(54)이 고르게 혼합되도록 각 원료를 다수 등분으로 분할하여 여러 차례 나누어 혼합한다. 이러한 비율로 실리콘고무(52)와 카본블랙분말(54)을 혼합하여 보호시트(50)를 제조하면, LCD패널(30)과 TCP(10)의 본딩시 상기 열압착기의 열이 TCP(10)에 적정수준으로 전달된다.The carbon black protective sheet 50 is manufactured by the following method. First, the silicone rubber 52 and the carbon black powder 54 are mixed. At this time, preferably, the silicon rubber 52 and the carbon black powder 54 are mixed in a weight ratio of about 6: 4, and each raw material is divided into a plurality of equal parts so that the silicon rubber 52 and the carbon black powder 54 are evenly mixed. Split and split several times to mix. When the protective sheet 50 is manufactured by mixing the silicone rubber 52 and the carbon black powder 54 at such a ratio, the heat of the thermocompressor during bonding of the LCD panel 30 and the TCP 10 is reduced to the TCP 10. Is delivered to the appropriate level.
이와 같이 하여 실리콘고무(52)와 카본블랙분말(54)을 혼합한 다음에는, 혼합물을 메시망이 구비된 여과기에서 여과하여 혼합물 속에 존재할 수 있는 불순물을 제거한다. 그런 다음 상기 혼합물을 상온에서 약 7일정도 방치하여 혼합물을 숙성시킨다. 이러한 숙성과정에서는 상기 실리콘고무(52)와 카본블랙(54)의 분자가효과적으로 결속되어 카본블랙분말(54)이 시트에서 탈락되는 것이 방지된다.In this way, after the silicone rubber 52 and the carbon black powder 54 are mixed, the mixture is filtered through a filter equipped with a mesh network to remove impurities that may be present in the mixture. Then, the mixture is left at room temperature for about 7 days to mature the mixture. In this aging process, the molecules of the silicone rubber 52 and the carbon black 54 are effectively bound to prevent the carbon black powder 54 from falling off the sheet.
이어서 숙성된 혼합물에 경화제를 혼합한다. 일반적으로 실리콘고무의 경화시에는 가열에 의해 경화시키는 가열경화제가 사용되는데, 본 발명에서도 통상적인가열경화제를 사용한다. 이러한 가열경화제를 사용하는 경우에는 고온의 조건에서 경화시켜야 하므로 제품의 성형시 프레스 등으로 충분한 열과 압력을 가하여야만 성형이 가능하고, 롤러에 의해 순간적으로 가열가압되므로 충분한 반응열이 공급되지 못하는 캘린더가공(압연)에 의해서는 제품을 성형하기가 곤란하다.The curing agent is then mixed into the aged mixture. Generally, when curing the silicone rubber, a heat curing agent that is cured by heating is used. In the present invention, a commonly applied heat curing agent is also used. In the case of using such a heat hardening agent, it must be cured under high temperature conditions, so that molding is possible only by applying sufficient heat and pressure with a press or the like during molding of the product. Rolling), it is difficult to mold the product.
따라서 본 발명에서는 가열경화반응을 상온경화반응으로 바꾸는 경화촉진제를 혼합하여 상온에서 경화가 가능하도록 한다. 따라서 실온에서 성형 및 경화가 가능하므로 제품 성형시 캘린더가공(압연)으로 성형이 가능하다.Therefore, in the present invention, by curing the curing accelerator to change the heat curing reaction to a room temperature curing reaction to enable curing at room temperature. Therefore, it can be molded and cured at room temperature, so it can be molded by calendering (rolling) during product molding.
이와 같이 경화제와 경화촉진제를 고르게 혼합시킨 다음, 혼합물을 시트상으로 성형한다. 본 발명에서는 전술한 바와 같이, 열경화반응을 상온경화반응으로 바꾸는 경화촉진제를 사용하기 때문에 시트 캘린더가공(압연)에 의한 연속적인 성형이 가능하다. 또한, 이와 같이 상기 혼합물을 캘린더가공(압연)에 의해 가공하면, 프레스로 성형하는 것에 비해 소요되는 수준으로 충분히 얇게 성형할 수 있다. 바람직하게는 시트의 두께를 0.35±0.05㎜ 두께정도로 얇게 성형한다.In this way, the curing agent and the curing accelerator are evenly mixed, and the mixture is shaped into a sheet. In the present invention, as described above, since a curing accelerator that converts the thermosetting reaction into a room temperature curing reaction is used, continuous molding by sheet calendering (rolling) is possible. In addition, when the mixture is processed by calendering (rolling) in this way, it can be formed sufficiently thin to the required level as compared with molding by press. Preferably, the sheet is thinly formed to a thickness of about 0.35 ± 0.05 mm.
이상에서와 같이 본 발명에 의하면, 실리콘고무에 카본블랙이 함침된 새로운 구조의 카본블랙 보호시트가 제공된다. 이러한 본 발명에 의한 보호시트는 카본블랙이 실리콘고무에 함침되어 있기 때문에 ACF를 이용해 LCD패널의 전극과 TCP를 연결할 때, 시트의 쿠션에 의해 이들 연결부위가 손상되지 않으면서도 열압착기의 열이 ACF로 효과적으로 전달되며, 작업시 카본블랙분말이 시트에서 이탈될 우려가 없으므로 LCD패널과 TCP의 연결불량으로 인한 제품의 불량률을 낮출 수 있다. 뿐만 아니라 본 발명에 의한 보호시트는 경화촉진제를 사용하여 상온에서도 경화가 가능하므로 캘린더가공(압연)에 의한 성형이 가능하다. 그리고 캘린더가공(압연)은 단속적으로 밖에 성형할 수 없는 프레스성형에 비해 연속적인 성형이 가능하므로 캘린더가공(압연)하는 경우에는 제품의 코스트가 낮아진다.As described above, according to the present invention, a carbon black protective sheet having a new structure in which carbon black is impregnated with silicone rubber is provided. Since the protective sheet according to the present invention is carbon black impregnated with silicone rubber, when the ACF is connected to the LCD panel with the TCP, the heat of the thermocompressor does not damage these connection parts due to the cushion of the sheet. It can be effectively delivered to the product, and there is no risk of carbon black powder falling off the sheet during work, which can lower the defective rate of the product due to the poor connection between LCD panel and TCP. In addition, since the protective sheet according to the present invention can be cured at room temperature using a curing accelerator, molding by calendering (rolling) is possible. In addition, since calendering (rolling) can be carried out continuously compared to press molding which can only be formed intermittently, the cost of the product is lowered when calendering (rolling).
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| KR1020010008461A KR100338867B1 (en) | 2001-02-20 | 2001-02-20 | carbon black sheet |
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| US6184965B1 (en) * | 1996-03-26 | 2001-02-06 | Canon Kabushiki Kaisha | Circuit connection structure |
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| US6184965B1 (en) * | 1996-03-26 | 2001-02-06 | Canon Kabushiki Kaisha | Circuit connection structure |
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