• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An output pad is formed at one end, and an input terminal is exposed at one end at the other end thereof, and a tape carrier package having a driver driver IC mounted thereon, and a connector mounted on a printed circuit board and detachably inserted at an input terminal of the tape carrier package. When the LCD panel is repaired by electrically connecting the LCD panel and the PCB using the LCD panel, the LCD panel is handled to prevent damage to the PCB itself.
    公开号:KR19990031940A
    申请号:KR1019970052841
    申请日:1997-10-15
    公开日:1999-05-06
    发明作者:허정민
    申请人:윤종용；삼성전자 주식회사；
    IPC主号:
    专利说明:

    Connection structure of LCD module
    The present invention relates to an LCD module structure, and more particularly, to a tape carrier package on a PCB to prevent damage to a printed circuit board (PCB) during a repair of the LCD panel. (Tape Carrier Package; hereinafter referred to as 'TCP') relates to a connection structure of the LCD module mounting a connector for connection.
    As the modern society becomes more information, the importance of the display device for displaying useful information is gradually increasing. Currently, CRT (Cathode Ray Tube) is widely used as a monitor for TV or computer, but it is limited in terms of power consumption, weight and volume. In particular, as the screen size is enlarged, it is a technical challenge to accurately represent the association of edges. Moreover, it is adversely affecting the human body by electromagnetic wave disorder or VDT syndrome.
    In such a situation, as a display device capable of solving the above problems, an LCD device having a light weight, a short time, and a low power consumption have been increasingly highlighted.
    In particular, active matrix LCDs, which combine liquid crystal technology and semiconductor technology, are recognized as next-generation displays to replace CRTs, and active research is being conducted on them. An active matrix type TFT-LCD used as a switching element is mentioned.
    The TFT-LCD panel has a thin structure while manufacturing the LCD module. In order to enlarge the ratio of the effective display area of the LCD panel to the total LCD module area as much as possible, the driver driver IC is applied to the TFT substrate of the LCD panel. It is electrically connected using TAB mounting technology.
    TAB mounting technology is largely divided into the process of connecting TCP to the LCD panel and the process of connecting TCP to the PCB. In this case, the TCP used is a straight type TCP and a bent type TCP. Can be mentioned.
    Of these, the most commonly used straight type TCP has a disadvantage in that the overall size of the TFT-LCD module is larger than that of the vent type TCP, but a relatively large amount of film is used because it uses less expensive film. It is advantageous in terms of cost compared to the vent type that requires.
    On the other hand, the vent type TCP is designed to bend the TCP by increasing the size of the TCP, which has the advantage of solving the mechanical weakness, which is the biggest disadvantage of the straight type, and minimizing the size of the module. The price of the film is so high that the overall cost of the driver IC is relatively higher than that of the straight TCP.
    1 is a plan view showing a conventional LCD module structure having a structure in which the LCD panel and the PCB are electrically connected to the drive driver IC by a straight type TCP, Figure 2 is a cross-sectional view showing the AA 'cutting surface structure of FIG. Indicates.
    1 and 2, the TFT substrate 12a of the PCB 10 and the LCD panel 12 is electrically connected to the drive driver IC 16 by the TCP 14 for the tab (TAB). It can be seen that the PCB 10 and the LCD panel 12 connected in this way are configured to be mounted on the mold flame 18.
    In FIG. 1, reference numeral a denotes an active area where an actual image is displayed on the LCD panel, reference numeral 16a denotes a driving driver IC, and reference numeral 13a denotes a lead formed on the bottom surface of the base film of the TCP 14 and the PCB 10. Denotes a solder portion formed on a predetermined portion of the base film in order to connect them, and reference numeral 13b denotes a connection portion to which the lead formed on the bottom surface of the base film of the TCP 14 and the TFT substrate 12a of the LCD panel 12 are connected. .
    The LCD panel 12 includes a TFT substrate 12a in which a plurality of data lines and a gate line are vertically intersected with each other, and a TFT and a pixel electrode are formed to be connected to their intersections, and a black matrix and a color filter. ) And the C / F substrate 12b on which the common electrode made of ITO is formed to face each other, and have a structure in which a liquid crystal is injected into a space of several μm therebetween.
    In addition, the PCB 10 and the LCD panel 12 are mounted on the mold frame 18 in a state in which the PCB 10 and the LCD panel 12 are spaced apart from each other, and the spaces therebetween are placed below the PCB 10 and the LCD panel 12. A panel support 20 of mold frame material designed to be integrally connected with the mold frame 18 protrudes with the TCP 14 interposed therebetween.
    As such, the panel support 20 is formed in the space between the PCB 10 and the LCD panel 12 to protect the CD panel 12 from external mechanical stress or impact. Here, the PCB 10 serves to support the semiconductor chip 16 mechanically while supplying a signal to the semiconductor chip 16 from the outside.
    At this time, in the portion where the PCB 10 and the input pad 14a of the TCP 14 are connected, the driving driver IC 16 and the PCB 10 are connected by tap soldering using lead, whereas the LCD panel In the portion where the TFT substrate 12a of 12 and the output pad 14b of TCP 14 are connected, the drive driver IC 16 using an anisotropic conductive film (hereinafter referred to as 'ACF') is used. And LCD panel are connected. Related drawings are specifically illustrated in the cross-sectional view of FIG. 2.
    Therefore, when a signal is applied to the driving driver IC 16 through the PCB 10, the driver IC 16 sends the signal input through the PCB 10 to the LCD panel 12, thereby, the LCD panel 12 The LCD module is driven to display this image.
    However, this type of connection structure causes a problem when the LCD panel is repaired. In other words, when repairing an LCD panel, the PCB is always attached to the LCD panel via TCP. Therefore, when the LCD panel is handled during repair, the connection structure may be damaged or the PCB itself may be damaged by the impact.
    Also, if the tap soldering is wrong, it is inconvenient to detach and re-sold the TCP in order to repair it.
    Accordingly, an object of the present invention has been devised in view of the above problems, it is to prevent the connection structure between the TCP and the PCB is damaged by separating the TCP and the PCB when the LCD panel is repaired.
    1 is a plan view schematically showing an LCD module structure to which a conventional TAB mounting method is applied;
    FIG. 2 is a cross-sectional view illustrating the AA ′ cutting surface structure of FIG. 1;
    3 is a perspective view showing a connection structure of the LCD module according to the present invention.
    In order to achieve the above object, the present invention provides a tape carrier package having an output pad connected to an LCD panel at one end thereof, an input terminal having one side exposed at the other end thereof, and a driving driver IC mounted on one side of the upper and lower sides thereof; It is mounted on a printed circuit board, characterized in that the input terminal of the tape carrier package is detachably inserted, consisting of a connector for electrically connecting the printed circuit board and the LCD panel.
    Preferably, the connector is openable and close so that the contact terminal formed therein is separated.
    Hereinafter, the connection structure of the LCD module according to the present invention will be described with reference to the accompanying drawings. The same reference numerals and names are used for the same components as in the prior art.
    As shown, an output pad 13a is formed at one end of the TCP 14 to be connected to the TFT substrate 12a of the LCD panel 12, and at the other end, an input terminal 14a for connecting to the PCB 10 is provided. Is formed. According to the present invention, the input terminal 14a is attached on the TCP film so that only one side is exposed to the outside and has a predetermined width and length. The width and length of the input terminal 14a correspond to the width and length of the contact terminal formed in the connector 20 as described later. In addition, the driver IC 16a is mounted on either side of the TCP.
    In addition, the connector 20 is mounted on the PCB 10, and the contact terminal 20b is provided on the side of the connector 20 corresponding to the input terminal 14a exposed to the outside as described above (upper in this embodiment). Is formed and an elastic portion (not shown) is formed at the lower portion thereof to form a slot 20a through which the input terminal 14a can be inserted.
    On the other hand, the connector 20 may be a fixed type as described above, or may be used an opening and closing type that is separated from the contact terminal 20b formed therein.
    Referring to the connection method of the connection structure according to the present invention configured as described above, first, the drive driver using the ACF at the portion where the TFT substrate 12a of the LCD panel 12 and the output pad 14b of the TCP 14 are connected. The IC 16 and the LCD panel are connected. Then, the input terminal 14a of the TCP 14 is aligned so as to correspond to the contact terminal 20b of the connector 20, and then inserted into the slot 20a of the connector 20, thereby providing the PCB 10 and the LCD panel 12. ) Is electrically connected.
    In addition, when the LCD panel 12 is repaired, the input terminal 14a of the TCP 14 is disconnected from the connector 20, and then the repair operation is performed. After the repair operation is completed, the connection is reconnected as described above. Let's do it.
    In this way, by separating the TCP input terminal from the connector and performing a repair operation, damage to the PCB itself can be prevented in advance. In addition, during the initial model development, many tests are performed while the LCD panel and the PCB are connected. Therefore, the LCD panel is often moved, thus damaging the PCB or damaging the connection structure between the PCB and TCP, causing damage to the driver IC. . Therefore, this problem can be solved by detachably connecting the input terminal of TCP and the connector of PCB.
    As described above, according to the present invention, an output pad is formed at one end thereof, and an input terminal having one side exposed at the other end thereof is formed, and a tape carrier package having a drive driver IC mounted thereon, and mounted on a printed circuit board, When the LCD panel is repaired by electrically connecting the LCD panel to the PCB using a connector in which the input terminal is detachably inserted, the damage to the PCB itself can be prevented by handling the LCD panel.
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] A tape carrier package having an output pad connected to the LCD panel at one end thereof, an input terminal having one side exposed at the other end thereof, and a driving driver IC mounted on one of the upper and lower sides thereof;
    And a connector configured to be mounted on a printed circuit board, the input terminal of the tape carrier package being detachably inserted to electrically connect the printed circuit board and the LCD panel.
    [2" claim-type="Currently amended] The connection structure of an LCD module according to claim 1, wherein the connector is capable of opening and closing such that a contact terminal formed therein is separated.
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    同族专利:
    公开号 | 公开日
    KR100493776B1|2005-08-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1997-10-15|Application filed by 윤종용, 삼성전자 주식회사
    1997-10-15|Priority to KR1019970052841A
    1999-05-06|Publication of KR19990031940A
    2005-08-31|Application granted
    2005-08-31|Publication of KR100493776B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019970052841A|KR100493776B1|1997-10-15|1997-10-15|Connection structure of LCD module|
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