JPH0744369U - Electronic device having film type flexible cable - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides an electronic device having a film-type flexible cable having an improved electrode connection structure. According to the electronic device of the present invention, the terminals of the flexible cable and the terminals of the main body to which the flexible cable is connected are separately knitted into a first group and a second group which are alternately selected, and the terminals of the first group are The terminals of the second group are arranged on one straight line, and the terminals of the second group are arranged on a second straight line keeping a predetermined distance from the first straight line, and each terminal has a width relatively wider than that of the corresponding signal line. [Effect] The size of the corresponding terminals is not limited by the distance between the densely arranged signal lines, and the size of the corresponding terminals is expanded. Further, the expanded terminals of the flexible cable allow the flexible cable to be easily aligned with the main body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electronic device having a film-type flexible cable, and more particularly to an electronic device having a film-type flexible cable in which a contact area of a terminal is enlarged and contact stability with a terminal to which the terminal is applied is enhanced.

[0002]

[Prior art]

 Generally, a flexible cable is flexible and has considerable elasticity, and fine signal lines are densely formed, and of course, a driving IC for electronic device control is mounted on the flexible cable, so it is a precision electronic device. , Mainly applied to portable computers, word processors, computer keyboards, and image display devices. This is mainly used as an electrical contact device between an element which is frequently separated from a fixed position and an element which is electrically connected to the internal element of an electronic device, and has a drive IC. It also serves as an interface that connects the coupling elements in the middle.

FIG. 1 schematically shows a liquid crystal display device to which a conventional flexible cable is applied. 2 is an enlarged perspective view of a portion A of the liquid crystal display device shown in FIG. 1 in which linear terminals 4'are arranged, and FIG. 3 is an enlarged perspective view of a main part of the conventional flexible cable 10. As shown in FIG. 4 is a sectional view taken along line IV-IV in FIG.

In the liquid crystal display device 1, electrodes 4 and 5 are formed on the inner surfaces of a front plate 2 and a rear plate 3 which are fixed to each other by a sealing material 7 and are opposed to each other. 3 has a structure in which a liquid crystal layer 6 is interposed. The electrodes 4 and 5 are provided with corresponding terminals 4'which are connected and fixed to the terminals 10 'of the flexible cable 10 and the anisotropic conductive adhesive layer 20 at the tips thereof. 4 shows the electrode 4 and its terminal 4 ', but the terminal of the electrode 5 is not shown. As shown in FIG. 3, the flexible cable 10 includes two overlapping first and second sheets 11 and 12, and a plurality of lined signal lines 10 ″ are formed on the inner surface of the first sheet 11. The terminal 10 'is provided at the tip of the signal line. And the second sheet 12 is attached to the inner surface of the first sheet 11 provided with the signal line so as to protect the signal line 10 ". .

The above-mentioned conventional liquid crystal display device and flexible cable have terminals 4 ′ and 10 ′ which are arranged very linearly and are arranged in parallel. Therefore, in order to fix the flexible cable to the liquid crystal display element 1, the terminals of the corresponding electrodes are closely aligned with each other and are fixed so that they do not cause electrical interference with other terminals. However, the width of the terminals is so narrow that it is difficult to make a stable and reliable connection between the corresponding terminals. Therefore, when using a conventional flexible cable, a precise and strict bonding process is required.

The contact structure between the liquid crystal display element and the terminal using the flexible cable is also found in other types of electronic devices. Therefore, these electronic devices also have the above-mentioned problems.

[0007]

[Problems to be solved by the device]

 An object of the present invention is to solve the above problems, and to provide an electronic device having a film type flexible cable in which the contact area of the contact-compatible element is expanded to enable easy and stable contact. To do.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a first sheet having a plurality of signal lines, a second sheet for protecting the signal lines, and a tip portion of the first sheet extended from the signal lines. A film type having a flexible cable having a plurality of terminals to be formed, and a main body in which terminals corresponding to the terminals of the flexible cable are provided at ends of signal lines exposed to the outside of the two sheets. In an electronic device having a flexible cable,

The flexible cable and the terminals of the main body are organized into alternating first and second groups, the terminals of the first group are arranged on a first straight line, and the terminals of the second group are arranged. Are arranged on a second straight line having a predetermined distance from the first straight line, and the terminal has a width relatively wider than that of the corresponding signal line.

In another embodiment of the present invention, a quadrangular expanded terminal is provided at each end bent to the signal line of the main body and the signal line of the flexible cable. The terminals of the signal lines are formed to incline at a predetermined angle (θ) with respect to the corresponding signal line.

According to another embodiment of the present invention, in the central part of the signal line, the terminals are arranged so as to be aligned with the signal line, and are gradually inclined toward the periphery of both ends thereof. As a result, it has a fan shape as a whole.

[0012]

[Action]

 According to the electronic device having the film type flexible cable of the present invention, the flexible cable can be easily aligned with the main body by the extended terminals of the main body and the flexible cable. Since the area of the contacted terminal is enlarged, the electrical contact state is stabilized, and the resistance of the contacted portion can be lowered as compared with the conventional one.

[0013]

【Example】

 5 and 6 show a body 100 and a flexible cable 200 of the electronic device according to the present invention, respectively. The main body 100 and the flexible cable 200 have a plurality of parallel signal lines 101 and 201, respectively. Expanded terminals 100a, 100b, 200a, 200b are provided at each end of the signal line 101 of the main body 100 and the signal line 201 of the flexible cable 200. The signal lines 101 and 201 are divided into signal lines 101a and 201a of the first group and signal lines 101b and 201b of the second group, which are alternately selected, respectively. Terminals 100a of the signal lines 101a and 201a of the first group, No. 200a is arranged in the first row L1, and terminals 100b, 200b of the second group of signal lines 101b, 201b are arranged in the second row L2 maintaining a predetermined distance W from the first row L1.

Meanwhile, FIGS. 7 and 8 show a second embodiment of the present invention. This embodiment comprises elements as in the previous embodiments. That is, the main body 100 and the flexible cable 200 each have a plurality of parallel signal lines 101 'and 201'. Signal lines 101 'of the main body 100 and signal lines 201' of the flexible cable 200 are provided with T-shaped expanded terminals 100a ', 100b', 200a ', 200b' at respective bent ends. The signal lines 101 'and 201' are divided into signal lines 101a 'and 201a' of the first group and signal lines 101b 'and 201b' of the second group, which are alternately selected, respectively. The terminals 100a ', 200a' of 101a ', 201a' are arranged in the first row L1 ', and the terminals 100b', 200b 'of the second group of signal lines 101b', 201b 'are predetermined with the first row L1'. They are arranged in the second row L2 'which keeps the distance W. The difference from the above-described embodiment is that the terminals of each signal line are formed to be inclined at a predetermined angle (θ) with respect to the corresponding signal line.

Meanwhile, the present invention can be further embodied in the third embodiment. Referring to FIG. 9, this embodiment has both the first embodiment and the second embodiment, and the signal line is arranged so that the terminals are aligned with the signal lines in the central portion. It will gradually incline toward both sides.

[0016]

[Effect of device]

 As described above, the present invention is characterized in that the size of the corresponding terminal is not limited by the interval of the signal lines arranged in close proximity, and the size is expanded more. The extended terminals of the body and flexible cable allow the flexible cable to be easily aligned with the body. Since the area of the terminal to be contacted is expanded, the electrical contact state is stabilized, and the resistance of the contacted part can be reduced compared to the conventional case. The ease and stability of the alignment mentioned above, the electrical stability of the contact portion, and the like improve the reliability of the product, and further have the effect of reducing the defective rate in the product manufacturing.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the concept of the present invention.

[Brief description of drawings]

FIG. 1 is a view schematically showing a liquid crystal display element as an example of a conventional electronic device to which a conventional flexible cable is applied.

FIG. 2 is an enlarged perspective view of an essential part of a portion A of the liquid crystal display element shown in FIG.

3 is an enlarged view of a main part of the conventional flexible cable of FIG. 1 showing terminals corresponding to the terminals of the liquid crystal display element shown in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is an enlarged perspective view of an essential part of a first embodiment of a liquid crystal display device according to the present invention, corresponding to FIG.

6 is an enlarged perspective view of a flexible cable according to the present invention, which corresponds to FIG. 3 and is applied to the liquid crystal display device shown in FIG.

FIG. 7 is an enlarged perspective view of an essential part of a second embodiment of a liquid crystal display device according to the present invention.

8 is an enlarged perspective view of a main part of a second embodiment of a flexible cable according to the present invention applied to the liquid crystal display device shown in FIG.

FIG. 9 is an enlarged perspective view of a liquid crystal display device according to a third embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Liquid crystal display element 2 Front plate 3 Rear plate 4, 5 Electrodes 4 ', 10' Terminal 6 Liquid crystal layer 7 Sealing material 10 Flexible cable 11 1st sheet 12 2nd sheet 20 Anisotropic conductive adhesive layer 100a, 100b, 200a, 200b Terminals 101a, 101b, 200a, 200b Signal line L1 First row L2 Second row W Predetermined interval

Claims (3)

[Scope of utility model registration request] 1. A first sheet having a plurality of signal lines formed thereon, a second sheet for protecting the signal lines, and a plurality of terminals extending from the signal lines and formed at a tip portion of the first sheet. An electronic device having a film-type flexible cable, comprising: a flexible cable comprising; and a body corresponding to a terminal of the flexible cable, the body being provided at an end of a signal line exposed to the outside of the two sheets, The flexible cable and the terminal of the main body are separately knitted into a first group and a second group that are alternately selected, the terminals of the first group are arranged on a first straight line, and the terminals of the second group are the first group. It is arranged on a second straight line that keeps a predetermined distance from one straight line, and each terminal has a width relatively wider than a corresponding signal line. An electronic device having a film-type flexible cable. 2. The signal line of the main body and the signal line of the flexible cable are provided with respective bent end portions, and the expanded terminals are provided at the end portions. An electronic device having the film-type flexible cable. 3. The bent ends of one or more of the signal lines are arranged such that terminals of one or more of the signal lines are aligned with the signal lines on the same line. An electronic device having a film type flexible cable according to claim 2, wherein the electronic device has a section.