JP3249358B2 - Display device and method of assembling the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plurality of TCPs (Tape Carr) for driving a display between a display panel and a substrate.
(i.e., package).
In particular, the present invention relates to a display device using a TCP temporary fixing tape for connecting a TCP and a substrate.

[0002]

2. Description of the Related Art In a display device such as a liquid crystal display device which requires thinning and miniaturization, an LSI for driving a base film is used as an element for driving a display.
Is used. This TCP has one end connected to the display panel side via an anisotropic conductive adhesive or the like, and the other end connected to a substrate via solder or an anisotropic conductive adhesive. In order to prevent connection failure due to winding of the film, temporary connection is performed with a double-sided adhesive or the like.

Conventionally, in order to perform this temporary fixing, a tape is used in which a plurality of double-sided adhesives are applied on a backing paper (or release paper) at intervals corresponding to the intervals of TCP. Since the double-sided adhesive is separated according to TCP, after removing the backing after applying the double-sided adhesive to the board, when one or more of the double-sided adhesive is attached to the backing, May peel off, TCP
In some cases, it was not possible to perform the temporary fixing properly.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above points, and has as its object to provide a structure and an assembling method capable of reliably connecting a TCP to a substrate. Issues. Another object is to improve the assembling workability of the display device.

[0005]

According to the present invention, a plurality of TCPs, one ends of which are connected at a predetermined interval along one side of a display panel, are temporarily attached to a substrate with an adhesive capable of adhering to both sides. After fixing, in the display device in which the other end of the TCP is connected to the substrate, the adhesive is set to a length longer than a predetermined number of the TCPs, and the adhesive located between the TCPs is set. The surface of the agent is covered with a non-adhesive spacer.

The present invention also provides a method for assembling a display device by connecting the other ends of a plurality of TCPs connected at predetermined intervals along one side of a display panel to a substrate. The back surface of a double-sided adhesive that has a length longer than the predetermined number of pieces and has a plurality of non-adhesive spacers disposed on the front surface at intervals corresponding to the length of the TCP Is attached to a predetermined position of the substrate, and the other end of the TCP is temporarily fixed to the surface of the adhesive between the spacers.

Further, the present invention is a tape used for temporarily fixing the other ends of a plurality of TCPs connected at a predetermined interval along one side of a display panel to the substrate. An adhesive that can be double-sided adhered on a backing paper is disposed over a length longer than a predetermined number of the TCPs, and is not adhered on the adhesive with a space corresponding to the length of the TCPs. It is characterized in that a plurality of sex spacers are arranged. A release paper can be placed on the adhesive and the spacer.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 to 3, reference numeral 1 denotes a liquid crystal display device as an example of a display device.
Are arranged at predetermined intervals. TC
P3 has a form in which an LSI 32 as a display drive element is incorporated in a film base 31 on which a wiring pattern such as a copper foil is formed, and is TAB (Tape Automat).
ed Bonding). This T
One end 33 of the CP 3 is electrically connected to the display panel 2 via an anisotropic conductive adhesive (not shown) or the like. TCP3
Is connected to the substrate 5 via an adhesive 4 that can be bonded to both sides.
Is temporarily connected to the substrate 5 via a conductive adhesive 6 such as solder or an anisotropic conductive adhesive.
The substrate 5 can be constituted by a printed circuit board in which printed wiring is provided on an insulating substrate.
Connection terminal portions for connection with P3 are formed with an interval corresponding to the interval of TCP3.

Next, TC for forming the adhesive 4
The P temporary fixing tape 40 will be described with reference to FIGS. This temporary fixing tape 40 is formed by applying an adhesive 4 capable of being bonded on both sides in a strip shape on an elongated backing sheet 41 having a width smaller than the width of the substrate 5, and forming the TCP 3 on the adhesive 4 to a length L 1 of the TCP 3. Non-adhesive spacer 42 with corresponding spacing L2
Are arranged, and an elongated release paper 43 having the same function and the same shape as the mount 41 is arranged thereon.

The mount 41 has a length approximately equal to the length of the substrate 5 and is in an elongated shape having a width approximately half the width of the substrate 5. As the adhesive 4, a known adhesive can be used, provided that the adhesive 4 has a stable adhesive strength between the substrate 5 and the TCP 3 and is easily peeled off from the backing paper 41 or the release paper 43. This adhesive 4 is used for the TCP connected to the substrate 5.
Instead of being separated every three, a predetermined number (6 in this example)
Over the length of the range in which the predetermined number (six in this example) of the TCP3 are arranged so as to be continuous with the TCP3), that is, over the length longer than the total length of the predetermined number of the TCP3. It is applied to the backing paper. Adhesive 4 is 1
It is most preferable to use one continuous band-like adhesive for a plurality of TCPs 3 on one substrate 5. However, when one substrate is long and the number of TCPs 3 is large, two adhesives are used for one substrate.
By using up to three temporary fixing tapes 40, the adhesive 4 can be separated into two or three places. The spacer 42 is for preventing the adhesive 4 continuous over the plurality of TCPs 3 from being exposed from the space between the TCPs 3, and has at least a surface having a non-adhesive structure.

An assembling method for assembling the display device 1 using the temporary fixing tape 40 having the above configuration will be described. A plurality of TCPs 3 are positioned and arranged along a side of the display panel 2 at a predetermined interval from each other.
Of the display panel 2 via an anisotropic conductive adhesive or the like.
Thermocompression bonded to one side. Next, the temporary fixing tape 4
Then, the backing sheet 41 is peeled off, and the back surface of the adhesive 4 is attached to a predetermined position on the substrate 5. Next, the release paper 43 of the temporary fixing tape 40 is peeled off to expose the surface of the adhesive 4 and the spacer 42 thereon as shown in FIG. 5, and the other end 34 of the TCP 3 is exposed to the exposed adhesive. The TCP 3 is temporarily fixed to the substrate 5 by positioning and attaching to the substrate 4. Here, since the adhesive 4 is formed in a single strip shape for a plurality of, in this example, six TCPs 3, when peeling the release paper 43, only the release paper 43 can be peeled off. One TC
It is possible to prevent a situation in which the adhesive is peeled off together with the release paper as in the conventional case where the adhesive is separated corresponding to P. Next, the other end 34 of the TCP 3 and the connection terminal portion of the substrate 5 are fixed via the conductive adhesive 6,
Make electrical connections.

When a TCP and a substrate are provided on the other side of the display panel 2, the same operation as described above is performed in parallel on the other side, so that the TCP and the necessary parts around the display panel 2 are provided. And a display device on which the substrate is arranged.

When assembling the display device 1 assembled as described above into another device (not shown), the TCP 3 on the substrate 5 and the TCP 3
Since the gap portion 3 may be used as a support surface of a substrate support member (not shown) or the like, if the adhesive is exposed at this gap portion, the work may be performed by the adhesive during assembly or repair. Performance may be reduced. Also, T on the substrate 5
The space between CP3 and TCP3 may be used as a surface on which a substrate support member and other members (not shown) slide when the display device 1 is incorporated into another device (not shown) by a sliding method. If the adhesive is exposed in the space, the workability may be reduced due to the adhesive at the time of assembly or repair, as in the above case. Thus, it is desired that the space between the TCPs 3 on the substrate 5 be a surface having no adhesive property. In response to such a request, TCP3 on the substrate 3 and TCP3
Since the spacer 42 having no adhesiveness on the surface is disposed in the space portion of the above, when the display device 1 is incorporated in another device,
At the time of assembling or repairing, the workability due to the adhesive 4 is prevented from being reduced by the spacer 42, so that assembling workability and repairing workability can be improved.

The spacer 42 may be a thin plate made of a synthetic resin such as PET, but may be a coating film having no adhesiveness due to drying or curing (thermal curing, ultraviolet curing, etc.). If such a coating film that does not have adhesiveness due to drying or curing is used as the spacer 42, the spacer 42 can be arranged by the coating film, and the arrangement workability is improved, and temporary fixing is performed. Adhesion workability with the tape 40 can also be improved.

In the above embodiment, the case where the display panel 2 and the substrate 5 are arranged on substantially the same plane has been described. However, in the present invention, the angle between the display panel 2 and the substrate 5 is about 90 degrees to about 180 degrees. It can also be applied to the case where TCP 3 is bent during the arrangement. In addition, the liquid crystal display device has been described as an example, but the present invention can be applied to other display devices.

[0016]

As described above, according to the present invention, since the adhesive for the temporary fixing tape is formed in a single band for a plurality of TCPs, the adhesive is not peeled off when the release paper is peeled off. Only the paper can be peeled off, and the temporary fixing of the TCP can be performed more reliably. In addition, since a spacer having no adhesive property is arranged on the space between the TCPs on the substrate, when the display device is incorporated into another device, workability with an adhesive during assembly or repair is required. Is prevented by this spacer, and the assembling workability and repair workability can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of a display device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1;

FIG. 4 is a sectional view of the temporary fixing tape 40.

FIG. 5 is a plan view of the temporary fixing tape 40 with a release paper 43 removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Display panel 3 TCP 4 Adhesive 40 TCP temporary fixing tape 41 Mount 42 Spacer 43 Release paper 5 Substrate

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-183767 (JP, A) JP-A-7-72493 (JP, A) JP-A-7-261192 (JP, A) JP-A-9-99 111211 (JP, A) JP-A-7-77697 (JP, A) JP-A-8-320498 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G02F 1/1345 C09J 5 / 00 G09F 9/00 346

Claims (3)

(57) [Claims] 1. A plurality of TCPs (Tape Caps) having one ends connected at predetermined intervals along one side of a display panel.
After temporarily fixing the other end of the package to the substrate with an adhesive capable of adhering to both sides, the display device is connected to the other end of the TCP and the substrate. A display device having a long length, wherein a surface of the adhesive located between the TCPs is covered with a non-adhesive spacer. 2. A plurality of TCPs (Tape Caps) having one ends connected at predetermined intervals along one side of the display panel.
When assembling a display device by connecting the other end of the package (rrier Package) to a substrate, a non-adhesive spacer having a length longer than a predetermined number of the TCPs and having a non-adhesive surface on the TCP is attached to the TCP. The back surface of a plurality of double-sided adhesives arranged at intervals corresponding to the length is attached to a predetermined position on the substrate, and the TC is attached to the adhesive surface between the intervals.
A method for assembling a display device, wherein the other end of P is temporarily fixed. 3. A plurality of TCPs (Tape Caps) whose one ends are connected at a predetermined interval along one side of the display panel.
A tape used for temporarily fixing the other end of the package (rrier Package) to the substrate, and an adhesive that can be double-sided adhered on a backing paper over a length longer than a predetermined number of the TCPs. A temporary fixing tape for a TCP, wherein a plurality of non-adhesive spacers are arranged on the adhesive at intervals corresponding to the length of the TCP.