KR100551440B1 - Chip-on-glass type LCD panel - Google Patents
Chip-on-glass type LCD panel Download PDFInfo
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- KR100551440B1 KR100551440B1 KR1019980038037A KR19980038037A KR100551440B1 KR 100551440 B1 KR100551440 B1 KR 100551440B1 KR 1019980038037 A KR1019980038037 A KR 1019980038037A KR 19980038037 A KR19980038037 A KR 19980038037A KR 100551440 B1 KR100551440 B1 KR 100551440B1
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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
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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
- G02F1/13458—Terminal pads
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136286—Wiring, e.g. gate line, drain line
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Abstract
LCD 패널 중 구동드라이브 IC가 실장되는 각 영역에 적어도 한 개이상의 얼라인 홈을 형성하고, 얼라인 홈과 대응되는 구동드라이브 IC에 얼라인용 범프를 형성함으로써, LCD 패널과 구동드라이브 IC의 얼라인이 용이하고 입출력 범프와 입출력 패드들 간의 얼라인 미스가 최소화되어 LCD 모듈의 화질을 향상시킬 수 있다.By forming at least one alignment groove in each area of the LCD panel in which the drive drive IC is mounted, and forming an alignment bump in the drive drive IC corresponding to the alignment groove, the alignment of the LCD panel and the drive drive IC is aligned. It is easy and the alignment misalignment between the input / output bump and the input / output pad is minimized to improve the image quality of the LCD module.
Description
본 발명은 칩 온 글라스(Chip On Glass; 이하 COG라 한다) 타입의 LCD 패널에 관한 것으로, 더욱 상세하게는 구동드라이브 IC의 입·출력 범프들과 LCD 패널의 입·출력 패드들을 정확히 얼라인시키기 위해 각 구동드라이브 IC가 실장되는 영역에 적어도 2개이상의 얼라인 홈을 형성한 칩 온 글라스 타입의 LCD 패널에 관한 것이다.The present invention relates to an LCD panel of a chip on glass (hereinafter referred to as COG) type, and more particularly, to accurately align input / output bumps of a driving drive IC and input / output pads of an LCD panel. The present invention relates to a chip-on-glass type LCD panel in which at least two alignment grooves are formed in an area in which each driving drive IC is mounted.
일반적으로, 액정표시장치는 박막트랜지스터(Thin Film Transistor; 이하 TFT라함) 기판, TFT 기판과 마주보는 칼라필터 기판, 그리고, TFT 기판과 칼라필터 기판 사이에 주입되는 액정물질을 포함하는 장치로서, 두 기판 사이에 주입된 액정의 전기 광학적 성질을 이용하여 정보를 표시하는 표시장치이다.In general, a liquid crystal display device includes a thin film transistor (TFT) substrate, a color filter substrate facing the TFT substrate, and a liquid crystal material injected between the TFT substrate and the color filter substrate. It is a display device that displays information by using the electro-optical properties of the liquid crystal injected between the substrates.
액정표시장치 모듈에서 LCD 패널과 인쇄회로기판과 구동 드라이브 IC의 연결 방법에 따라 TAB(Tape Automated Bonding) 실장방식과 COG(Chip On Glass)실장방식으로 구분된다. In LCD module, it is divided into TAB (Tape Automated Bonding) mounting method and COG (Chip On Glass) mounting method according to the connection method of LCD panel, printed circuit board and driving drive IC.
TAB 실장방식은 구동드라이브 IC가 탑재된 테이프 캐리어 패키지의 일단이 LCD 패널에 접속하고 타단은 인쇄회로기판에 전기적으로 접속시키는 작업을 의미한다. 여기서, 전자의 경우 LCD 패널의 게이트 영역과 데이터 영역에 형성된 게이트 및 데이터 입력 패드에 이방성 도전필름(ACF;Anisotropic Conductive Film)을 부착한 다음 게이트 및 데이터 입력패드와 테이프 캐리어 패키지의 출력배선을 얼라인시킨 후 열 압착 방식으로 LCD 패널과 테이프 캐리어 패키지를 상호 부착한다. In the TAB mounting method, one end of a tape carrier package equipped with a drive driver IC is connected to an LCD panel and the other end is electrically connected to a printed circuit board. In the former case, anisotropic conductive film (ACF) is attached to gates and data input pads formed in the gate area and data area of the LCD panel, and then the output wirings of the gate and data input pads and the tape carrier package are aligned. After pressing, the LCD panel and the tape carrier package are attached to each other by thermal compression.
후자의 경우 테이프 캐리어 패키지의 입력배선과 인쇄회로기판의 출력패드를 납땜 또는 ACF를 이용하여 접속시킨다. In the latter case, the input wiring of the tape carrier package and the output pad of the printed circuit board are connected by soldering or ACF.
COG 실장방식은 LCD 패널의 게이트 영역 및 데이터 영역에 반도체 패키지 형태의 구동드라이브 IC를 직접 실장하여 LCD 패널에 전기적 신호를 전달하는 방식으로, 보통 이방성 도전 필름을 이용하여 구동드라이브 IC를 LCD 패널에 본딩한다.In the COG mounting method, a drive package IC in a semiconductor package is directly mounted in a gate area and a data area of an LCD panel to transfer an electrical signal to the LCD panel. Usually, an anisotropic conductive film is used to bond the drive drive IC to an LCD panel. do.
여기서, 구동드라이브 IC의 입·출력 범프들과 게이트 영역 및 데이터 영역에 형성된 입·출력패드들을 정확히 얼라인시키기 위해 구동드라이브 IC가 실장되는 위치마다 2개이상의 얼라인 마크를 약 10～20㎛정도 돌출시켜 형성한다.Here, two or more alignment marks are about 10 to 20 µm for each position where the drive drive IC is mounted in order to accurately align the I / O bumps of the drive drive IC and the I / O pads formed in the gate area and the data area. Protrude to form.
그러나, 앞에서 설명한 바와 같이 얼라인 마크가 소정높이로 돌출되어 있기 때문에 게이트 및 데이터 영역에 구동드라이브 IC를 직접 실장할 경우, 입·출력 범프들과 입·출력패드들의 본딩 조건에 따라 미스 얼라인(mis-align)이 발생되어 정도(shift)가 불균일하게 나타남으로써, 화질불량이 발생되는 문제점이 있다.However, as described above, since the alignment mark protrudes to a predetermined height, when the driving drive IC is directly mounted in the gate and data regions, the misalignment may be changed depending on the bonding conditions of the input / output bumps and the input / output pads. Since mis-alignment occurs and the shift is unevenly represented, there is a problem of poor image quality.
따라서, 본 발명의 목적은 상기와 같은 문제점을 감안하여 안출된 것으로써, LCD 패널을 제작할 때 입·출력 범프와 입·출력 패드들의 미스 얼라인 발생을 최소화하여 액정표시장치의 화질을 향상시키는데 있다.Accordingly, an object of the present invention is to conceive in view of the above problems, to minimize the misalignment of input and output bumps and input and output pads when manufacturing an LCD panel to improve the image quality of the liquid crystal display device. .
본 발명의 다른 목적은 다음의 상세한 설명과 첨부된 도면으로부터 보다 명확해 질 것이다.Other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.
이와 같은 목적을 달성하기 위해서 본 발명은 LCD 패널 중 구동드라이브 IC가 실장될 영역에 적어도 2개이상의 얼라인 홈을 형성하고, 얼라인 홈과 대응되도록 구동드라이브 IC의 하부면에 얼라인용 범프를 형성한다.In order to achieve the above object, the present invention forms at least two alignment grooves in an area in which the LCD driver panel is to be mounted, and forms alignment bumps on the lower surface of the driving driver IC to correspond to the alignment grooves. do.
바람직하게, 얼라인 홈의 깊이는 얼라인용 범프의 높이보다 깊고, 얼라인 홈의 면적은 얼라인용 범프의 면적보다 넓다.Preferably, the depth of the alignment grooves is deeper than the height of the alignment bumps, and the area of the alignment grooves is wider than the area of the alignment bumps.
이하, 본 발명에 의한 칩 온 글라스 실장방식의 LCD 패널의 구조에 대해 첨부된 도면 도 1 및 도 2를 참조하여 설명하면 다음과 같다.Hereinafter, the structure of the LCD panel of the chip-on-glass mounting method according to the present invention will be described with reference to FIGS. 1 and 2.
도 1에 도시된 바와 같이 LCD 패널(100)은 TFT 기판(110)과 칼라필터 기판(140)으로 구성된다. TFT 기판(110)의 가로방향에 다수개의 게이트선(120)이 형성되고, 세로방향에 게이트선(120)과 수직으로 교차하는 다수개의 데이터선(미도시)이 형성되며, 게이트선(120) 및 데이터선의 일단부에는 신호가 입력되는 게이트 및 데이터 입력패드(122)가 형성된다(여기서는 게이트선 및 게이트 입력패드만 도시함).As shown in FIG. 1, the LCD panel 100 includes a TFT substrate 110 and a color filter substrate 140. A plurality of gate lines 120 are formed in the horizontal direction of the TFT substrate 110, and a plurality of data lines (not shown) that vertically intersect the gate lines 120 are formed in the vertical direction, and the gate lines 120 are formed. And a gate and a data input pad 122 through which a signal is input are formed at one end of the data line (here, only the gate line and the gate input pad are shown).
여기서, 게이트 입력패드들(122)이 형성된 LCD 패널(100)의 단변방향 일단 소정영역을 게이트 영역(121)이라 한다.Here, a predetermined region of one end side of the LCD panel 100 in which the gate input pads 122 are formed is referred to as a gate region 121.
또한, 게이트 입력패드들(122)과 소정간격 이격된 영역에는 복수개의 출력배선들(130)이 형성되고 게이트 입력패드들(122)과 마주보는 출력배선들(130)의 일단부 각각에는 출력패드들(132)이 형성된다. 여기서, 출력배선들(130)은 게이트 입력패드들(122)과 소정간격 이격된 영역에서부터 TFT 기판(110)의 가장자리까지 연장되어 형성되고, 출력배선들(130) 간의 피치는 게이트선들(120)의 피치보다 넓게 형성된다.In addition, a plurality of output wires 130 are formed in an area spaced apart from the gate input pads 122 by a predetermined distance, and output pads are formed at one ends of the output wires 130 facing the gate input pads 122. Field 132 is formed. The output lines 130 extend from the region spaced a predetermined distance from the gate input pads 122 to the edge of the TFT substrate 110, and the pitch between the output lines 130 is the gate lines 120. It is formed wider than the pitch of.
한편, 게이트 입력패드들(122) 및 출력패드들(132)이 형성된 LCD 패널(100)에는 열경화성 접착제인 이방성 도전필름(160)을 개재하여 구동드라이브 IC들(150)이 실장된다. Meanwhile, the drive drive ICs 150 are mounted on the LCD panel 100 having the gate input pads 122 and the output pads 132 via the anisotropic conductive film 160, which is a thermosetting adhesive.
여기서, LCD 패널(100) 중 게이트 영역(121)에 부착되는 구동드라이브 IC들(150)의 하부면에는 출력패드들(132)과 대응되도록 입력 범프들(도시 안됨)이 형성되고, 게이트 입력패드들(122)과 대응하여 출력범프들(도시 안됨)이 형성되며, 또한 도 2에 도시된 바와 같이 입·출력패드들(122, 132)과 입·출력범프들을 얼라인시키기 위한 한쌍의 얼라인용 범프(155)가 구동드라이브 IC(150)의 일단에 형성된다.Here, input bumps (not shown) are formed on the lower surfaces of the driving drive ICs 150 attached to the gate region 121 of the LCD panel 100 so as to correspond to the output pads 132 and the gate input pads. Output bumps (not shown) are formed in correspondence with the field 122, and a pair of alignment units for aligning the input / output pads 122 and 132 and the input / output bumps as shown in FIG. A bump 155 is formed at one end of the driving drive IC 150.
바람직하게 얼라인용 범프들(155) 사이의 간격은 수㎛로 형성되고, 입·출력 범프들 사이의 간격은 최소 6㎛이상으로 형성되고, 얼라인용 범프(155) 및 입·출력 범프들의 재질은 도전성이 좋은 금(Au) 합금계 금(Au-Alloy)이다.Preferably, the interval between the alignment bumps 155 is formed to be several μm, the interval between the input and output bumps is formed to be at least 6 μm, and the material of the alignment bump 155 and the input / output bumps is Gold (Au) alloy gold (Au-Alloy) with good conductivity.
한편, LCD 패널(100) 중 구동드라이브 IC들(150)이 실장되는 각 영역에는 얼라인용 범프(155)와 대응되도록 적어도 2개이상의 얼라인 홈(125)을 형성되어 입력범프들과 출력패드들(132), 출력범프들과 게이트 입력패드들(122)을 정확히 얼라인시킨다.Meanwhile, at least two alignment grooves 125 are formed in each region of the LCD panel 100 in which the driving drive ICs 150 are mounted so as to correspond to the alignment bumps 155, thereby providing input bumps and output pads. 132, the output bumps and the gate input pads 122 are correctly aligned.
얼라인 홈(125)은 구동드라이브 IC(150)가 실장되는 기판측에 사전에 형성된 초기 좌표 키(도시 안됨)를 인식한 후 이산화탄소(CO2) 레이저를 이용하여 형성한다.The alignment groove 125 is formed by using a carbon dioxide (CO 2 ) laser after recognizing an initial coordinate key (not shown) previously formed on the substrate side on which the driving drive IC 150 is mounted.
바람직하게, 얼라인 홈(125)의 깊이는 얼라인용 범프(155)의 높이보다 깊고, 얼라인 홈(125)의 면적은 얼라인용 범프(155)의 면적보다 넓다.Preferably, the depth of the alignment groove 125 is deeper than the height of the alignment bump 155, and the area of the alignment groove 125 is larger than the area of the alignment bump 155.
이와 같이 LCD 패널(100) 중 구동드라이브 IC(150)가 실장되는 각 영역에 얼라인 홈(125)을 형성하면, 구동드라이브 IC(150)의 입·출력범프들과 LCD 패널(100)의 입·출력패드들(122, 132)을 얼라인시킬 때 얼라인 홈(125)에 얼라인용 범프(155)를 삽입하기 때문에 LCD 패널(100)과 구동드라이브 IC(150)의 얼라인이 용이할 뿐만 아니라 입력범프들과 출력패드들(132), 출력범프들과 게이트 입력패드들(122)이 정확하게 얼라인된다.As such, when the alignment grooves 125 are formed in each area of the LCD panel 100 in which the driving drive IC 150 is mounted, the input / output bumps of the driving drive IC 150 and the input / output of the LCD panel 100 are formed. Since the alignment bump 155 is inserted into the alignment groove 125 when the output pads 122 and 132 are aligned, the alignment of the LCD panel 100 and the driving drive IC 150 is easy. In addition, the input bumps and output pads 132, the output bumps and the gate input pads 122 are correctly aligned.
또한, 얼라인용 범프(155) 및 얼라인 홈(125)을 형성하면 입·출력 패드들(122, 132)의 피치를 극소화할 수 있어 LCD 패널(100) 상에 실장되는 구동드라이브 IC(150)의 개수를 줄일 수 있어 원가가 절감된다.In addition, when the alignment bumps 155 and the alignment grooves 125 are formed, the pitch of the input / output pads 122 and 132 may be minimized, and thus the driving drive IC 150 mounted on the LCD panel 100 may be used. The cost can be reduced by reducing the number of parts.
이상에서 설명한 바와 같이 본 발명은 LCD 패널 중 구동드라이브 IC가 실장되는 각 영역에 적어도 한 개이상의 얼라인 홈을 형성하고, 얼라인 홈과 대응되는 구동드라이브 IC에 얼라인용 범프를 형성함으로써, LCD 패널과 구동드라이브 IC의 얼라인이 용이하고 입출력 범프와 입출력 패드들 간의 얼라인 미스가 최소화되어 LCD 모듈의 화질을 향상시킬 수 있는 효과가 있다.As described above, the present invention provides an LCD panel by forming at least one alignment groove in each region of the LCD panel in which the driving drive IC is mounted, and forming alignment bumps in the driving drive IC corresponding to the alignment groove. And drive drive ICs can be easily aligned, and alignment errors between input / output bumps and input / output pads are minimized, thereby improving the image quality of the LCD module.
도 1은 본 발명에 의한 칩 온 글라스 실장방식에 사용되는 LCD 패널을 나타낸 분해 사시도이고,1 is an exploded perspective view showing an LCD panel used in the chip on glass mounting method according to the present invention,
도 2는 도 1을 I-I선을 따라 절단한 종단면도이다.FIG. 2 is a longitudinal cross-sectional view of FIG. 1 taken along the line I-I. FIG.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980038037A KR100551440B1 (en) | 1998-09-15 | 1998-09-15 | Chip-on-glass type LCD panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980038037A KR100551440B1 (en) | 1998-09-15 | 1998-09-15 | Chip-on-glass type LCD panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20000019767A KR20000019767A (en) | 2000-04-15 |
| KR100551440B1 true KR100551440B1 (en) | 2006-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019980038037A KR100551440B1 (en) | 1998-09-15 | 1998-09-15 | Chip-on-glass type LCD panel |
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| Country | Link |
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| KR (1) | KR100551440B1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3781967B2 (en) * | 2000-12-25 | 2006-06-07 | 株式会社日立製作所 | Display device |
| JP2002366051A (en) | 2001-06-08 | 2002-12-20 | Sanyo Electric Co Ltd | Integrated circuit chip and display device using the same |
| CN115240567B (en) * | 2022-06-21 | 2023-11-14 | 京东方科技集团股份有限公司 | Display panel and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08136944A (en) * | 1994-11-08 | 1996-05-31 | Citizen Watch Co Ltd | Liquid crystal panel |
| JPH08292445A (en) * | 1995-04-21 | 1996-11-05 | Citizen Watch Co Ltd | Liquid crystal display device |
| JPH08315951A (en) * | 1995-05-12 | 1996-11-29 | Ricoh Co Ltd | Conductive particle aligning plate and conductive particle transfer method |
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1998
- 1998-09-15 KR KR1019980038037A patent/KR100551440B1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08136944A (en) * | 1994-11-08 | 1996-05-31 | Citizen Watch Co Ltd | Liquid crystal panel |
| JPH08292445A (en) * | 1995-04-21 | 1996-11-05 | Citizen Watch Co Ltd | Liquid crystal display device |
| JPH08315951A (en) * | 1995-05-12 | 1996-11-29 | Ricoh Co Ltd | Conductive particle aligning plate and conductive particle transfer method |
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