JP4828976B2 - Flat panel display and flat panel display manufacturing system - Google Patents

Description

  The present invention relates to a flat panel display that can be manufactured under the same conditions as a small one even if it has a large shape, and a flat panel display manufacturing system using the flat panel display.

As shown in FIG. 5, the flat panel display includes a rectangular back surface plate 1, an electric circuit 2 provided on the back surface plate 1, and a rectangular surface plate 5 provided on the electric circuit 2 (FIG. 5). However, it is provided with a terminal portion 10 having a plurality of wirings 3 connected to the electric circuit 2 (see FIGS. 2A, 2B and 4). And the said terminal part 10 is provided so that it may protrude outward from the surface board 5 on the back surface board 1, and in order to equalize the resistance of the wiring 3 of the terminal part 10, it respond | corresponds to the edge | side of the back surface board 1, etc. It is provided at intervals. The terminal unit 10 is connected to external electrodes (not shown) through electronic components such as a TCP (Tape Carrier Package) 20 having a driver IC 26 or an FPC (Flexible Printed Circuit) (not shown) not having a driver IC. (See Patent Document 1).
JP 2000-348631 A

  However, when the plurality of terminal portions 10 are provided at substantially equal intervals corresponding to the sides of the back plate 1 as described above, an electronic component such as TCP 20 or FPC is provided on the terminal portion 10 with an anisotropic conductive film (Anisotropic Conductive Film). , Hereinafter referred to as “ACF”), the following problems occur. That is, when an electronic component is crimped to the terminal portion 10, a crimping device 30 (not shown in FIG. 1, but see FIGS. 2A, 2B, and 4) for crimping at a high temperature and high load is used. Although the crimping is performed collectively, if the plurality of terminal portions 10 are provided at equal intervals as described above, the terminal portions 10 are arranged over a wide range on the back plate 1, and thus the crimping device 30 becomes large. For example, a 45-inch class large flat display has a long side of about 1100 mm, and a crimping device 30 having the same length is required to collectively bond the TCP 20 to each terminal portion 10 of the large flat display. Become.

  Further, as described above, when the plurality of terminal portions 10 are provided at equal intervals, the terminal portions 10 are arranged over a wide range on the back plate 1, and therefore, when the electronic component is crimped to the terminal portion 10, It becomes easy to be influenced by the flatness.

  Further, when a glass plate is used as the back plate 1 and the driver IC 26 is directly bonded to the terminal portion 10 on the glass plate as in the COG (Chip On Glass) process, the larger the glass plate, A large flat panel display cannot be manufactured because the glass distortion due to the load increases.

  The present invention has been made in consideration of the above points, and is a large flat panel display in which a large number of terminal portions are disposed by concentrating the terminal portions in a predetermined area of the back plate. However, it can be manufactured under the same conditions as a small flat panel display.

The present invention includes a rectangular back plate, an electrical circuit provided on the back plate, a rectangular surface plate provided on the electrical circuit, and a terminal portion having a plurality of wirings connected to the electrical circuit. The terminal portion is provided on the back plate so as to protrude outward from the front plate, and a plurality of terminal portions are provided corresponding to at least one side of the back plate, and provided corresponding to the one side on the back plate. The terminal portions thus arranged are concentrated in a predetermined region along the one side, the predetermined region includes a plurality of terminal portions, and non-predetermined regions having no terminal portions are formed on both sides of the predetermined region, The flat panel display is characterized in that the cross-sectional area of the wiring of the terminal portion at both ends along the one side is larger than the cross-sectional area of the wiring of the central terminal portion .

  The present invention is the flat panel display characterized in that the predetermined region is located in the vicinity of the central portion along the one side of the back plate.

  The present invention is the flat panel display characterized in that a plurality of the predetermined regions are formed along the one side of the back plate.

  The present invention is the flat panel display characterized in that the predetermined area is located in the vicinity of both end portions along the one side of the back plate.

  In the present invention, the back plate and the front plate are each rectangular, and a plurality of terminal portions are provided corresponding to the adjacent long side and short side of the back plate, and the terminal portion corresponds to the long side of the back plate. The flat panel display is characterized in that the number of the predetermined areas where the concentration is larger than the number of the predetermined areas where the terminal portions corresponding to the short sides of the back plate are concentrated.

  In the present invention, the plurality of terminal portions corresponding to the long sides of the back plate are concentrated in the vicinity of both ends of the long side of the back plate, and the plurality of terminal portions corresponding to the short sides of the back plate are The flat panel display is characterized by being concentrated in the vicinity of the center of the short side.

  The present invention is the flat panel display characterized in that the cross-sectional area of the wiring increases as the length of the wiring of the terminal portion increases.

  The present invention is a flat panel display characterized in that an electronic component for connecting an external electrode for passing a current to the electric circuit through the terminal portion is provided at the tip of each terminal portion connected to the electric circuit.

  The present invention comprises any one of the above flat panel displays, and a crimping device for crimping an electronic component to the tip of each terminal portion connected to the electric circuit of the flat panel display. This is a display manufacturing system.

  According to the present invention, even if the terminal portion is a large flat panel display in which a large number of terminal portions are arranged by concentrating and arranging the terminal portions in a predetermined area of the back plate, the terminal portions are in a narrow range on the back plate. Therefore, it can be manufactured under the same conditions as a small flat panel display.

First Embodiment Hereinafter, a first embodiment of a flat panel display according to the present invention will be described with reference to the drawings. Here, FIG. 1 and FIGS. 2A and 2B are views showing a first embodiment of the present invention.

  As shown in FIGS. 1 and 2 (a) (b), the flat panel display includes a rectangular back plate 1 having a pair of long sides 1a and 1c and a pair of short sides 1b and 1d, and a back plate 1 The electric circuit 2 provided on the top and the rectangular surface plate 5 having a pair of long sides 5a and 5c and a pair of short sides 5b and 5d provided on the electric circuit 2 are provided. In FIG. 1, the surface plate 5 is not shown to illustrate the electric circuit 2.

  As shown in FIGS. 1 and 2A and 2B, a terminal portion 10 having a plurality of wirings 3 is connected to the electric circuit 2. The terminal portion 10 is provided on the back plate 1 so as to protrude outward from the front plate 5 (see FIG. 2A), and is adjacent to the long side 1a of the back plate 1 and the long side 1a. A plurality of short sides 1b are provided. In the present embodiment, six terminal portions 10 are provided corresponding to the long sides 1 a of the back plate 1, and three terminal portions 10 are provided corresponding to the short sides 1 b of the back plate 1. .

  As shown in FIGS. 1 and 2A, each terminal portion 10 provided corresponding to the long side 1a on the back plate 1 has a predetermined region 50 along the long side 1a, that is, the center of the long side 1a. It concentrates on the part vicinity 50a. Further, each terminal portion 10 provided corresponding to the short side 1b on the back plate 1 is concentrated in a predetermined region 50 along the short side 1b, that is, in the vicinity of the central portion 50b of the short side 1b. .

  In addition, the wiring 3 of the terminal part 10 shown in FIG. 1 has a large cross-sectional area, so that the length is long. For example, in the terminal portion 10 corresponding to the long side 1a of the back plate 1, the length of the wiring 3 of the terminal portion 10 at both ends is longer than that of the wiring 3 of the central terminal portion 10 and both ends. The cross-sectional area of the wiring 3 of the terminal portion 10 is larger than the cross-sectional area of the wiring 3 of the central terminal portion 10. Note that the increase in the cross-sectional area of the wiring 3 specifically means that the width of the cross section is increased, the thickness of the cross section is increased, or the like.

  As shown in FIGS. 1 and 2 (a) and 2 (b), external electrodes (see FIG. 1) are provided at the tips of the terminal portions 10 connected to the electric circuit 2 through the terminal portion 10 to pass a current through the electric circuit 2. (Not shown) are provided. In the present embodiment, a TCP 20 equipped with a driver IC 26 is used as the electronic component.

  FIG.2 (b) is a schematic sectional drawing when FIG.2 (a) is cut | disconnected by the II-II line. As shown in FIG. 2B, the TCP 20 is connected to the terminal portion 10 via the ACF 21. The ACF 21 is made of a thermosetting material that can be made conductive by applying pressure and is cured by heat. In addition, as long as it has adhesiveness instead of ACF21, the thing of another suitable material may be utilized, and what adhere | attaches with an ultrasonic wave instead of heat may be used.

  The TCP 20 can be crimped to the back plate 1 through the ACF 21 by a crimping device 30 as shown in FIGS. 2 (a) and 2 (b), the crimping device 30 is provided facing the crimping head 31 and the crimping head 31 that heats the TCP 20 while pressing the TCP 20 from above via the sheet member 36. And a pressure receiving unit 32 that supports the back plate 1. Among these, the sheet member 36 is guided by a feed roller 42, guide rollers 41 and 41, and a take-up roller 43. In FIG. 2A, for the sake of explanation, the feed roller 42, the take-up roller 43, the sheet member 36 provided between the guide roller 41 and the feed roller 42, the guide roller 41 and the take-up roller 43, The sheet member 36 provided between the two is not shown.

  Next, the operation of the present embodiment having such a configuration will be described.

  First, a method for pressure-bonding the TCP 20 to the back plate 1 via the ACF 21 will be described with reference to FIGS.

  First, the back plate 1 is disposed on the pressure receiving unit 32. At this time, the back plate 1 is disposed such that the terminal portion 10 is located above the pressure receiving unit 32. Next, the ACF 21 is pasted on the terminal portion 10. Thereafter, the TCP 20 is temporarily attached on the ACF 21 by using the adhesiveness of the ACF 21.

  Next, the pressure bonding head 31 disposed at a position facing the pressure receiving unit 32 is lowered. At this time, the TCP 20 is heated while being pressed together by the pressure-bonding head 31 via the sheet member 36. Here, since the ACF 21 can be provided with conductivity by applying pressure and is made of a thermosetting material that is cured by heat, the ACF 21 is heated and pressed to apply the TCP 20 to the terminal portion 10. It can be crimped to.

  In the flat panel display according to the present embodiment, as shown in FIGS. 1 and 2A, each terminal portion 10 provided corresponding to the long side 1a on the back plate 1 is formed at the center of the long side 1a. It concentrates on the part vicinity 50a. In addition, each terminal portion 10 provided corresponding to the short side 1b on the back plate 1 is concentrated in the vicinity of the central portion 50b of the short side 1b.

  For this reason, even when manufacturing a large flat panel display in which a large number of terminal portions 10 are used and the terminal portions 10 are generally arranged in a wide range, the manufacturing is performed under the same conditions as a small flat panel display. be able to.

  That is, the terminal portion 10 provided corresponding to the long side 1a of the back plate 1 is arranged in a concentrated manner near the central portion 50a of the long side 1a and provided corresponding to the short side 1b of the back plate 1. Since the terminal portion 10 is concentrated in the vicinity of the central portion 50b of the short side 1b, the size L in the longitudinal direction of the crimping device 30 can be reduced, and the crimping device 30 can be downsized (FIG. 2). (See (a)). Further, since the terminal portion 10 is concentrated in a narrow range, the influence of the flatness of the back plate 1 when the TCP 20 is crimped to the terminal portion 10 can be reduced, and the stability of the crimping is improved. be able to. In addition, when a glass plate is used for the back plate 1, a large flat panel display is commercialized using a COG process that could not be put to practical use because of the large glass distortion generated in the glass plate. can do. Furthermore, when the TCP 20 is temporarily pressure-bonded onto the ACF 21, the distance for moving the TCP 20 is shortened, so that productivity can be improved.

  Further, the wiring 3 of the terminal portion 10 shown in FIG. 1 and FIG. 2A and FIG. 2B has a larger cross-sectional area as the length thereof becomes longer. The resistance of each wiring 3 can be made uniform.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment shown in FIG. 3 and FIG. 4, each terminal portion 10 provided corresponding to the long side 1 a of the back plate 1 has two end portions 50 c 1 and 50 c 2 near the long side 1 a. The other components are arranged in a concentrated manner, and the others are substantially the same as those of the first embodiment shown in FIGS. 1 and 2A and 2B.

  In the second embodiment shown in FIG. 3 and FIG. 4, the same parts as those in the first embodiment shown in FIG. 1 and FIG. To do.

  As shown in FIGS. 3 and 4, the plurality of terminal portions 10 are arranged in two locations along the long side 1 a of the back plate 1. Specifically, the plurality of terminal portions 10 corresponding to the long side 1a of the back plate 1 are concentrated at two locations near both ends 50c1 and 50c2 of the long side 1a of the back plate 1. In addition, the terminal part 10 provided corresponding to the short side 1b of the backplate 1 is concentrated and arrange | positioned in the center part vicinity 50b along the short side 1b of the backplate 1 similarly to 1st Embodiment. Yes.

  As described above, in the present embodiment, the predetermined region 50 where the terminal portion 10 corresponding to the long side 1a of the back plate 1 is concentrated is composed of the two near end portions 50c1 and 50c2, and the short side 1b of the back plate 1 is provided. The predetermined region 50 in which the terminal portion 10 corresponding to is concentrated consists of one central portion vicinity 50b.

  In general, more terminal portions 10 are arranged on the long side 1a side of the back plate 1 than on the short side 1b side. However, as described above, the terminal portions 10 corresponding to the long side 1a of the back plate 1 are arranged. By increasing the number of the end portions 50c1 and 50c2 near which both ends concentrate more than the number near the center portion 50b where the terminal portions 10 corresponding to the short sides 1b of the back plate 1 are concentrated, the long sides 1a of the back plate 1 The number of terminal portions 10 that are concentrated in the vicinity of both ends 50c1 and 50c2 and the number of terminal portions 10 that are concentrated in the vicinity of the central portion 50b of the short side 1b can be made substantially equal. .

  In the present embodiment, three terminal portions 10 can be arranged in the vicinity of the central portion 50b along the short side 1b of the back plate 1 and in the vicinity of both end portions 50c1 and 50c2 along the long side 1a.

  For this reason, TCP20 can be crimped | bonded to each terminal part 10 with one type of crimping | compression-bonding apparatus 30. FIG. Moreover, the size L in the longitudinal direction of the crimping device 30 can be further reduced, and the crimping device 30 can be reduced in size (see FIG. 4).

1 is a schematic plan view showing a first embodiment of a flat panel display according to the present invention. Schematic which shows the flat panel display and crimping | compression-bonding apparatus in the 1st Embodiment of this invention. The schematic plan view which shows 2nd Embodiment of the flat panel display by this invention. Schematic which shows the flat panel display and crimping | compression-bonding apparatus in the 2nd Embodiment of this invention. The schematic plan view which shows the conventional flat panel display.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Back plate 1a, 1c Long side 1b, 1d of back plate Short side 2 of back plate 2 Electric circuit 3 Wiring 5 Surface plate 5a, 5c Long side 5b of surface plate, 5d Short side 10 of surface plate Terminal part 50 Predetermined area 50a Near the center of the long side 50b Near the center of the short side 50c1, 50c2 Near both ends of the long side 20 TCP (electronic component)

Claims (9)

A rectangular back plate;
An electrical circuit provided on the back plate;
A rectangular surface plate provided on the electric circuit;
A terminal portion having a plurality of wirings connected to an electric circuit,
The terminal portion is provided on the back plate so as to protrude outward from the front plate, and a plurality of the terminal portions are provided corresponding to at least one side of the back plate,
Each terminal portion provided corresponding to the one side on the back plate is concentrated on a predetermined region along the one side, and the predetermined region includes a plurality of terminal portions and on both sides of the predetermined region. A flat panel display in which a non-predetermined region having no terminal portion is formed, and the cross-sectional area of the wiring of the terminal portion at both ends along the one side is larger than the cross-sectional area of the wiring of the central terminal portion . Wherein the predetermined region is a flat panel display of Claim 1, wherein the located central in that along the one side of the back plate.   The flat panel display according to claim 1, wherein a plurality of the predetermined regions are formed along the one side of the back plate.   The flat panel display according to claim 3, wherein the predetermined region is located in the vicinity of both end portions along the one side of the back plate. Each of the back plate and the front plate is rectangular,
A plurality of terminal portions are provided corresponding to the adjacent long and short sides of the back plate,
2. The flat according to claim 1, wherein the number of the predetermined regions where the terminal portions corresponding to the long sides of the back plate are concentrated is larger than the number of the predetermined regions where the terminal portions corresponding to the short sides of the back plate are concentrated. Panel display. A plurality of terminal portions corresponding to the long side of the back plate are concentrated in the vicinity of both ends of the long side of the back plate,
6. The flat panel display according to claim 5, wherein the plurality of terminal portions corresponding to the short side of the back plate are concentrated in the vicinity of the central portion of the short side of the back plate.   The flat panel display according to claim 1, wherein the wiring of the terminal portion has a larger cross-sectional area as the length of the wiring is longer.   2. The flat panel display according to claim 1, wherein an electronic component for connecting an external electrode for passing a current to the electric circuit through the terminal portion is provided at the tip of each terminal portion connected to the electric circuit. A flat panel display according to any one of claims 1 to 8,
A crimping device for crimping an electronic component to the tip of each terminal connected to the electric circuit of the flat panel display;
A flat panel display manufacturing system comprising:

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