KR20050028622A - Method for detecting mis-align of liquid crystal display - Google Patents

Method for detecting mis-align of liquid crystal display Download PDF

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KR20050028622A
KR20050028622A KR1020030065118A KR20030065118A KR20050028622A KR 20050028622 A KR20050028622 A KR 20050028622A KR 1020030065118 A KR1020030065118 A KR 1020030065118A KR 20030065118 A KR20030065118 A KR 20030065118A KR 20050028622 A KR20050028622 A KR 20050028622A
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tcp
point
pattern
misalignment
cell
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KR1020030065118A
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Korean (ko)
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KR100683152B1 (en
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김은철
백형철
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비오이 하이디스 테크놀로지 주식회사
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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
    • G02F1/1306—Details
    • G02F1/1309—Repairing; Testing
    • 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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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

A method of detecting misalignment of an LCD(Liquid Crystal Display) is provided to make it easy to detect the misalignment regardless of variation in width of a TCP(Tape Carrier Package) pad and to minimize an outflow defect due to a detection mistake. A TCP pattern in a pad is set. When the TCP pattern is set, TCP points are set by being distinguished into a start and an end. Allowable values of misalignment are managed by being distinguished into a left value and a right value or managed by each of the left and right values.

Description

액정표시장치의 미스얼라인 검출방법{Method for detecting mis-align of liquid crystal display} Method for detecting mis-aligned liquid crystal display

본 발명은 TFT LCD 모듈 TCP(tape carrier package) 본딩시에 사용하는 미스얼라인 검사기에 관한 것으로, 보다 상세하게는 TCP 본딩후 사용되는 미스얼라인 검출기의 검출방법을 통해 TCP 패드 폭의 변화에 상관없이 미스얼라인 검출이 용이하고 검출 착오에 의한 유출불량을 최소화시켜 신뢰성있는 제품을 확보할 수 있는 액정표시장치의 미스얼라인 검출방법에 관한 것이다.The present invention relates to a misalignment inspector used for bonding a TFT LCD module TCP (tape carrier package), and more specifically, to a change in TCP pad width through a detection method of a misalignment detector used after TCP bonding. The present invention relates to a method for detecting a misalignment of a liquid crystal display device which can easily detect a misalignment and secure a reliable product by minimizing a leakage defect caused by detection and error.

일반적으로 TCP(tape carrier package)와 패널(panel)의 압착을 통한 패드에 신호를 가해 주기 위해 TCP와 패널간의 압착을 실시하는데 TCP와 패널간의 정렬을 확인하기 위해 미스얼라인(misalign) 검사장비가 설치되어 미스얼라인의 유무 및 수치를 검사하여 알람(alarm)을 울리도록 설계가 되어 있다.In general, a crimp between TCP and a panel is performed to apply a signal to a pad through a crimping of a tape carrier package (TCP) and a panel. A misalign inspection device is provided to check the alignment between the TCP and the panel. It is designed to check the presence and value of misalignment and to sound an alarm.

이러한 관점에서 기존의 미스얼라인의 검출방법에 대해 도 1 내지 도 5를 참조하여 설명하면 다음과 같다.In this regard, the conventional misalignment detection method will be described with reference to FIGS. 1 to 5 as follows.

도 1은 종래기술에 따른 미스얼라인의 검출방법을 설명하기 위한 개략도이다.1 is a schematic diagram illustrating a method for detecting a misalignment according to the prior art.

또한, 도 2는 종래기술에 따른 마스얼라인의 형상들을 보여 주는 예들로서, (a)은 정상인 경우이고, (b)는 정상수준이지만 미스얼라인이 발생한 경우이며, (c)는 미스얼라인이 발생한 경우이다.In addition, Figure 2 is an example showing the shape of the mask alignment according to the prior art, (a) is a case of normal, (b) is a normal level but a misalignment occurs, (c) is a misalignment This is the case.

그리고, 도 3은 종래기술에 따른 미스얼라인 테스트방법을 설명하기 위한 개략도이고, 도 4는 도 2(b)의 미스얼라인된 경우를 보여 주는 개략도이며, 도 5는 도 2(c)의 미스얼라인된 경우를 보여 주는 개략도이다.3 is a schematic diagram for explaining a misaligned test method according to the related art, FIG. 4 is a schematic diagram showing a misaligned case of FIG. 2 (b), and FIG. Schematic diagram showing a misaligned case.

기존의 미스얼라인 테스트방법은, 도 3에 도시된 바와같이, 셀포인트(25)와 TCP 포인트(15)를 장비가 읽고 이들간 거리(d)를 측정하게 된다.In the conventional misaligned test method, as shown in FIG. 3, the device reads the cell point 25 and the TCP point 15 and measures the distance d between them.

또한, 도 4에 도시된 바와같이, 만약 끝단에 TCP패턴(10)이 부착되었을 때 미스얼라인 검사기는 검출방법에 의해 정상으로 처리하지만, 도 5에 도시된 바와같이, TCP패턴(10)의 폭이 변할 경우에 실제로 NG이지만 검사기는 정상으로 인지하게 된다.In addition, as shown in Fig. 4, if the TCP pattern 10 is attached to the end, the misalignment checker processes normally by the detection method, but as shown in Fig. 5, If the width changes, it is actually NG, but the checker sees it as normal.

이렇게 기존의 미스얼라인 검사기의 검출방법의 경우 패널(panel)의 끝단과 TCP 패드(tape carrier package pad)의 끝단을 인식하여 그 수치를 읽도록 설계가 되어 있는데 TCP 피치(tape carrier package pitch)에 따라 TCP 폭이 차이가 심하고 TCP 업체의 식각률 때문에 TCP 폭의 변화가 심해 정확히 검출되지 못한다.In the case of the detection method of the conventional misalignment tester, the end of the panel and the end of the tape carrier package pad are recognized to read the numerical value. As a result, the TCP width is very different, and the TCP width is severely changed due to the etching rate of the TCP company, so it cannot be accurately detected.

이에 본 발명은 상기 종래기술의 제반 문제점을 해결하기 위하여 안출한 것 으로서, 기존의 패널끝단과 TCP의 끝단에만 검사를 실시하던 것을 TCP 시작단에 포인트를 추가하여 포인트를 4포인트로 늘려 TCP 폭의 변화시에 검출 미스가 발생되는 문제점을 해결할 수 있는 액정표시장치의 미스얼라인 검출방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been made in order to solve the above problems of the prior art, the point that the test was performed only on the existing panel end and TCP end by adding a point to the TCP start end to increase the point to 4 points to increase the TCP width. SUMMARY OF THE INVENTION An object of the present invention is to provide a misalignment detection method of a liquid crystal display device, which can solve a problem in which a detection miss occurs when a change occurs.

상기 목적을 달성하기 위한 본 발명에 따른 액정표시장치의 미스얼라인 검출 방법은, 패드내의 TCP패턴을 설정하는 단계;According to an aspect of the present invention, there is provided a misalignment detection method of a liquid crystal display device, the method including: setting a TCP pattern in a pad;

패턴 설정시에 TCP포인트 설정을 시작단과 끝단으로 구분하여 설정하는 단계; 및 Setting the TCP point by dividing the start point and the end point when the pattern is set; And

관리할 미스얼라인의 허용치를 왼쪽과 오른쪽으로 구분하여 관리하거나 한쪽씩 관리하는 단계;를 포함하여 구성하는 것을 특징으로한다.And managing the tolerance values of the misalignment to be managed by dividing them into left and right sides or managing them one by one.

여기서, 상기 패드내의 TCP패턴을 설정하는 단계는 Here, the step of setting the TCP pattern in the pad

셀패턴과 셀포인트를 장비가 읽고 셀의 위치를 파악하는 공정과, The process of reading the cell pattern and the cell point by the equipment and identifying the position of the cell;

제1TCP패턴과 제1TCP포인트를 읽고 TCP가 시작되는 라인을 파악하는 공정과,Reading the first TCP pattern and the first TCP point and identifying the line where TCP is started;

제2TCP패턴과 제2TCP 포인트를 읽고 TCP가 끝나는 라인을 파악하는 공정을 포함하는 것을 특징으로한다.And reading a second TCP pattern and a second TCP point and identifying a line where the TCP ends.

또한, 상기 허용치는 2개를 사용하고 제어는 ±로 관리하는 것을 특징으로한다.In addition, it is characterized in that the two allowances are used and the control is controlled by ±.

그리고, 미스얼라인 검출방법은, FPD(plat panel design) 모듈 제조공정중 TCP/패널의 압착후, COF(chip on film)의 압착후, 칩/패널의 압착후, FPC(flexible printed circuit)/TCP의 압착후, FPC(flexible printed circuit)/COF(chip on film)의 압착후 또는 FPC(flexible printed circuit)/글라스(glass)의 압착후의 미스얼라인 검사에 모두 적용되는 것을 특징으로한다.In addition, the misalignment detection method is a method of manufacturing a printed circuit board (FPD) after a TCP / panel press, a COF (chip on film) press, a chip / panel press, and a FPC (flexible printed circuit) / After the crimping of TCP, it is applied to the misalignment inspection after the crimping of the flexible printed circuit (FPC) / chip on film (COF) or the crimping of the flexible printed circuit (FPC) / glass (glass).

(실시예)(Example)

이하, 본 발명의 바람직한 실시예들에 따른 액정표시장치의 미스얼라인 검출방법을 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, a misalignment detection method of a liquid crystal display according to exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 6은 본 발명의 바람직한 실시예에 따른 액정표시장치의 미스얼라인 검출방법을 설명하기 위한 개략도이다.6 is a schematic diagram illustrating a misalignment detection method of a liquid crystal display according to an exemplary embodiment of the present invention.

도 7은 본 발명의 다른 바람직한 실시예에 따른 액정표시장치의 미스얼라인 검출방법을 설명하기 위한 개략도이다.7 is a schematic diagram illustrating a misalignment detection method of a liquid crystal display according to another exemplary embodiment of the present invention.

본 발명의 바람직한 실시예에 따른 액정표시장치의 미스얼라인 검출방법은, 도 6에 도시된 바와같이, 패드(pad)내의 TCP패턴을 설정한다. 이때, 장비가 셀패턴 (50)과 셀포인트(55)를 읽고 셀의 위치를 파악한다. 또한, 제1TCP패턴(30)과 제 1TCP포인트(35)를 읽고 TCP가 시작하는 라인을 파악한다. 그리고, 제2TCP패턴(40)과 제2TCP 포인트(45)를 읽고 TCP가 끝나는 라인을 파악한다.In the misalignment detection method of the liquid crystal display according to the preferred embodiment of the present invention, as illustrated in FIG. 6, a TCP pattern in a pad is set. At this time, the equipment reads the cell pattern 50 and the cell point 55 to determine the position of the cell. In addition, the first TCP pattern 30 and the first TCP point 35 are read to determine the line where the TCP starts. Then, the second TCP pattern 40 and the second TCP point 45 are read to determine the line where the TCP ends.

그다음, 패턴 설정시에 TCP포인트 설정을 시작단(start)과 끝단(end)으로 구분하여 설정한다.Next, the TCP point setting is divided into a start end and an end end when setting the pattern.

이어서, 관리할 미스얼라인의 허용치를 왼쪽과 오른쪽으로 구분하여 관리하거나 한쪽씩 관리한다.Subsequently, the allowable value of the misalignment to be managed is managed by dividing it into left and right sides or by one side.

그다음, 허용치는 2개(즉, 왼쪽과 오른쪽)를 사용하고, 제어는 ±(즉, 왼쪽이 "-"이면 오른쪽은 "+")로 관리한다. 이때, 관리할 허용치 산출공식(A)은 패널 스페이스폭-관리할 삐져 나온 량이고, 관리할 허용치 산출공식(B)은 패널 피치 + 관리할 삐져 나온 량이다. 여기서, 상기 관리할 허용치 산출공식(A)는 셀포인트 (50)와 제1TCP패턴(30)간 거리이고, 관리할 허용치 산출공식(B)는 셀포인트(50)와 제1TCP 포인트(35)간 거리를 의미한다. 따라서, 허용치는 A 〈 허용치 〈 B로 정의할 수가 있다.Then, allowances are used for two (i.e. left and right), and control is controlled with ± (i.e. "+" if the left is "-"). At this time, the allowable formula to be managed (A) is the panel space width-the amount of protruding to be managed, and the allowable formula to be managed (B) is the panel pitch + amount to be managed. Here, the allowable calculation formula (A) to be managed is the distance between the cell point 50 and the first TCP pattern 30, and the allowable calculation formula (B) to be managed is between the cell point 50 and the first TCP point 35. Means distance. Therefore, the allowable value can be defined as A <allowable value <B.

한편, 본 발명의 다른 바람직한 실시예에 따른 액정표시장치의 미스얼라인 검출방법은, 도 7에 도시된 바와같이, 패드(pad)내의 TCP패턴을 설정하는데, 장비가 셀패턴(50)과 셀패턴내의 셀포인트(55)를 읽고 셀의 위치를 파악하며, 제1TCP패턴(30)과 제1TCP포인트(35)를 읽고 TCP가 시작하는 라인을 파악한다. 또한, 제2TCP패턴(40)과 제2TCP 포인트(45)를 읽고 TCP가 끝나는 라인을 파악한다.Meanwhile, in the misalignment detection method of the liquid crystal display according to another exemplary embodiment of the present invention, as shown in FIG. 7, a TCP pattern is set in a pad. The cell point 55 in the pattern is read to determine the position of the cell, and the first TCP pattern 30 and the first TCP point 35 are read to determine the line where TCP begins. In addition, the second TCP pattern 40 and the second TCP point 45 are read to determine the line where the TCP ends.

그다음, 패턴 설정시에 TCP포인트 설정을 시작단(start)과 끝단(end)으로 구분하여 설정한다.Next, the TCP point setting is divided into a start end and an end end when setting the pattern.

이어서, 관리할 미스얼라인의 허용치를 왼쪽과 오른쪽으로 구분하여 관리하거나 한쪽씩 관리한다.Subsequently, the allowable value of the misalignment to be managed is managed by dividing it into left and right sides or by one side.

그다음, 허용치는 2개(즉, 왼쪽과 오른쪽)를 사용하고, 제어는 ±(즉, 왼쪽이 "-"이면 오른쪽은 "+")로 관리한다. Then, allowances are used for two (i.e. left and right), and control is controlled with ± (i.e. "+" if the left is "-").

또한편, 본 발명에 따른 액정표시장치의 미스얼라인 검출방법은 FPD(plat panel design) 모듈 제조공정중 TCP/패널의 압착후, COF(chip on film)의 압착후, 칩/패널의 압착후, FPC(flexible printed circuit)/TCP의 압착후, FPC(flexible printed circuit)/COF(chip on film)의 압착후 또는 FPC(flexible printed circuit)/글라스(glass)의 압착후의 미스얼라인 검사에 모두 적용된다.In addition, the misalignment detection method of the liquid crystal display device according to the present invention is characterized in that after the compression of TCP / panel in the manufacturing process of a plat panel design (FPD) module, the compression of a chip on film (COF), and the compression of a chip / panel After the crimping of FPC (flexible printed circuit) / TCP, after crimping of FPC (flexible printed circuit) / COF (chip on film) or after crimping of FPC (flexible printed circuit) / glass (glass) Apply.

상기에서 설명한 바와같이, 본 발명에 따른 액정표시장치의 미스얼라인 검출방법에 의하면, TCP 패드의 폭에 따라 미스얼라인을 검출하지 못하던 종래의 약점을 보완하여 TCP 패드의 폭에 상관없이 미스얼라인의 검출이 가능하고, 결함 미스에 유출된 미스얼라인에 의해 진행으로 발생되던 선결함을 막을 수 있다.As described above, according to the misalignment detection method of the liquid crystal display according to the present invention, the conventional weakness of failing to detect the misalignment according to the width of the TCP pad is compensated for. It is possible to detect phosphorus and prevent predecessors caused by progress by the misalignment leaked to the defect miss.

한편, 본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변경 실시가 가능할 것이다.On the other hand, the present invention is not limited to the above-described specific preferred embodiments, and various changes can be made by those skilled in the art without departing from the gist of the invention claimed in the claims. will be.

도 1은 종래기술에 따른 미스얼라인의 검출방법을 설명하기 위한 개략도, 1 is a schematic diagram illustrating a method for detecting a misalignment according to the prior art;

도 2는 종래기술에 따른 마스얼라인의 형상들을 보여 주는 예들로서, (a)은 정상인 경우이고, (b)는 정상수준이지만 미스얼라인이 발생한 경우이며, (c)는 미스얼라인이 발생한 경우,Figure 2 is an example showing the shape of the mask alignment according to the prior art, (a) is a case of normal, (b) is a case of a normal alignment but a misalignment, (c) is a misalignment occurred Occation,

도 3은 종래기술에 따른 미스얼라인 테스트방법을 설명하기 위한 개략도,3 is a schematic view for explaining a misaligned test method according to the prior art,

도 4는 도 2(b)의 미스얼라인된 경우를 보여 주는 개략도, Figure 4 is a schematic diagram showing a misaligned case of Figure 2 (b),

도 5는 도 2(c)의 미스얼라인된 경우를 보여 주는 개략도,5 is a schematic view showing a misaligned case of FIG.

도 6은 본 발명의 바람직한 실시예에 따른 액정표시장치의 미스얼라인 검출방법을 설명하기 위한 개략도,6 is a schematic diagram for explaining a misalignment detection method of a liquid crystal display according to an exemplary embodiment of the present invention;

도 7은 본 발명의 다른 바람직한 실시예에 따른 액정표시장치의 미스얼라인 검출방법을 설명하기 위한 개략도.7 is a schematic diagram illustrating a misalignment detection method of a liquid crystal display according to another exemplary embodiment of the present invention.

[도면부호의설명][Description of Drawing Reference]

30 : 제1TCP패턴 35 : 제1TCP 포인트30: first TCP pattern 35: first TCP point

40 : 제2TCP패턴 45 : 제2TCP 포인트40: second TCP pattern 45: second TCP point

50 : 셀패턴 55 : 셀포인트 50: cell pattern 55: cell point

Claims (5)

패드내의 TCP패턴을 설정하는 단계;Setting a TCP pattern in the pad; 패턴 설정시에 TCP포인트 설정을 시작단과 끝단으로 구분하여 설정하는 단계; 및 Setting the TCP point by dividing the start point and the end point when the pattern is set; And 관리할 미스얼라인의 허용치를 왼쪽과 오른쪽으로 구분하여 관리하거나 한쪽씩 관리하는 단계;를 포함하여 구성하는 것을 특징으로하는 액정표시장치의 미스얼라인 검출방법.And managing the tolerance values of the misalignment to be managed by dividing them into left and right sides or managing them one by one. 제1항에 있어서, 상기 패드내의 TCP패턴을 설정하는 단계는,The method of claim 1, wherein setting the TCP pattern in the pad comprises: 셀패턴과 셀포인트를 장비가 읽고 셀의 위치를 파악하는 공정과, The process of reading the cell pattern and the cell point by the equipment and identifying the position of the cell; 제1TCP패턴과 제1TCP포인트를 읽고 TCP가 시작되는 라인을 파악하는 공정과,Reading the first TCP pattern and the first TCP point and identifying the line where TCP is started; 제2TCP패턴과 제2TCP 포인트를 읽고 TCP가 끝나는 라인을 파악하는 공정을 포함하는 것을 특징으로하는 액정표시장치의 미스얼라인 검출방법.And detecting the line where the TCP ends by reading the second TCP pattern and the second TCP point. 제1항에 있어서, 상기 허용치는 2개를 사용하고 제어는 ±로 관리하는 것을 특징으로하는 액정표시장치의 미스얼라인 검출방법.The method of claim 1, wherein the allowance is two, and the control is controlled by ±. 제1항에 있어서, 미스얼라인 검출방법은, FPD(plat panel design) 모듈 제조공정중 TCP/패널의 압착후, COF(chip on film)의 압착후, 칩/패널의 압착후, FPC(flexible printed circuit)/TCP의 압착후, FPC(flexible printed circuit)/COF(chip on film)의 압착후 또는 FPC(flexible printed circuit)/글라스(glass)의 압착후의 미스얼라인 검사에 모두 적용되는 것을 특징으로하는 액정표시장치의 미스얼라인 검출방법.The method for detecting misalignment according to claim 1, wherein the misalignment detection method comprises: after compressing a TCP / panel during a manufacturing process of a plat panel design (FPD) module, after pressing a chip on film (COF), after pressing a chip / panel, a FPC (flexible) After crimping of printed circuits / TCP, and after crimping of FPC / chip on film or FPC / glass A misalignment detection method for a liquid crystal display device. 제1항에 있어서, 상기 셀포인트는 셀패턴내에 위치하거나 제1TCP포인트 및 제2TCP포인트와 일정거리만큼 떨어진 이들사이의 중앙에 위치해 있는 것을 특징 으로 하는 액정표시장치의 미스얼라인 검출방법.The method of claim 1, wherein the cell point is located in a cell pattern or at a center between the first TCP point and the second TCP point by a predetermined distance.
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