KR100651496B1 - Flexible printed circuit board for electronic equipment - Google Patents

Abstract

A flexible PCB in an electronic equipment is provided to enable a line slot to divide lines, installed within the flexible PCB of the electronic equipment, into two parts and providing certain space for improving flexibility between the lines, thereby improving a function of the flexible PCB by preventing damage of a joint of the flexible PCB and improving the flexibility of the flexible PCB. In a flexible PCB(Printed Circuit Board) in an electronic equipment comprising: a line connector(41) of a circuit side which is electrically connected with a circuit board installed in a PCB; and the flexible PCB having plural lines(42) within in, the flexible PCB in the electronic equipment comprises a line slot(100) which is recessed to the predetermined depth along a length direction of the flexible PCB in the center of the flexible circuit, divides the lines(42) into two parts toward both sides of the length direction, and provides certain space between the lines(42).

Description

Flexible circuit of electronic equipment {FlEXIBLE PRINTED CIRCUIT BOARD FOR ELECTRONIC EQUIPMENT}

1 is a perspective view of a conventional sliding type portable terminal.

2 is a perspective view showing a connector provided on a printed circuit board of a conventional sliding type portable terminal.

3 is a perspective view illustrating a flexible circuit of a conventional sliding type portable terminal.

4 is a plan view showing a flexible circuit of a conventional sliding type portable terminal.

5 is a perspective view showing a flexible circuit of an electronic device according to an embodiment of the present invention;

6 is a plan view showing a flexible circuit of an electronic device according to an embodiment of the present invention.

7 is an enlarged plan view of portion A of FIG. 6;

8 is a cross-sectional view taken along the line A-A 'of FIG.

9 is an enlarged cross-sectional view of portion B of FIG. 8;

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible circuit of an electronic device, and more particularly, to a flexible circuit of an electronic device comprising a wiring slot for dividing the wiring embedded in the flexible circuit of the electronic device into two parts and providing a certain space for easy flow between the wirings. It is about.

In general, the term “portable communication device” refers to a device that a user can carry and perform wireless communication with a counterpart. Such portable communication devices are referred to as HHP, CT-2 cellular phones, digital phones, PCS phones and PDAs, and are classified into various types in appearance. For example, wireless terminals are classified into bar-type, flip-type, or folder-type wireless terminals according to their appearance. Bar-type wireless terminal means that a single housing is configured as a bar-type, flip-type wireless terminal means that the flip or cover is rotatably configured by a hinge device in the bar-type housing, folder-type wireless The terminal means that the folder is configured to be rotatably connected to the single bar-type housing by a hinge device and to be folded.

In addition, the wireless terminal may be classified into a rotation-type or sliding-type wireless terminal according to the opening and closing method. Rotation-type wireless terminal means that the two housings are face-to-face rotatably connected to open and close, sliding-type wireless terminal is one of the two housings, one of the housing facing the longitudinal sliding movement state It means to open and close. The variously classified wireless terminals listed above will be readily understood by those of ordinary skill in the art. Meanwhile, the above-mentioned conventional portable terminals are essentially provided with an antenna device, a data input / output device, and a data transmission / reception device. Of course, the data input device is commonly used as a keypad for inputting data mainly by a finger pressing operation, a touch pad or a touch screen is also used.

In addition, the data display function according to the data output device uses a liquid crystal display (LCD) universally. In addition, in the conventional portable communication device for a video call, the photographing means includes a camera lens, through which a video call with the other party or a desired subject can be taken.

Here, referring to FIG. 1, the sliding type wireless terminal 10 is described as an example among the various types of wireless terminals.

The sliding type wireless terminal 10 is a form in which the sliding housing 30 is opened by sliding a predetermined length in the longitudinal direction of the terminal on a predetermined body housing 20, and the user's changing variety compared to the existing folder type terminal. It has the advantage of being able to respond to preferences.

The sliding type wireless terminal 10 has the main housing 20 and the main housing 20, the slide housing 30 is lower than about 1/2 of the length of the main housing 20, or A slide housing 30 which is slid upward and opened, a sliding keypad 31, a liquid crystal display 32 having a display function, and a speaker device 33 are installed on a front surface of the sliding housing 30. 3x4 body keypad 21 and microphone device 22 are provided on the front surface of the body housing 20.

As shown in FIG. 2, the sliding type wireless terminal 10 includes a printed circuit board (PCB) 24 inside the body housing 20, and a liquid crystal display device inside the slide housing 30. A printed circuit board (PCB) 34 for an LCD).

As shown in FIG. 3, a flexible printed circuit 40 (FPCB) in which a microcircuit is printed on a thin sheet of flexible plastic as an electrical connection means for electrically connecting each of the printed circuit boards 24 and 34. Board) and connector 50 are used.

The flexible circuit 40 is a cable that electrically connects the printed circuit boards 24 and 34 so that the respective components can exchange power and signals with each other. This is the case, or when the direct connection of two components is difficult.

2, 3 and 4, the circuit-side wiring connector is electrically connected to both ends of the flexible circuit 40 and the circuit board connector 50 provided on the printed circuit board 24, 34 ( 41 is provided, and the circuit-side wiring connector 41 is connected to the connector 50, whereby various signal transmissions are made.

The connector 50 is provided with at least 45 pins (not shown) for electrically connecting, and the pins and the circuit-side wiring connector 41 of the flexible circuit 40 are fastened to each other within the flexible circuit 40. The plurality of wires 42 connected to the connector 41 are built in.

However, the wiring of the flexible circuit of the conventional portable terminal increases from as little as 10 to as many as 60 depending on the characteristics of the model of the terminal. In the case of a flexible circuit having more than 60 wires, the thickness increases as the width increases, which results in the loss of flexible fluidity when the terminal is slid, causing damage to the connector of the flexible circuit connector and the connector of the circuit board.

In addition, the conventional flexible circuit has a disadvantage in that the width becomes wider as the number of wires increases, so that the circuit is continuously stressed and damaged when the sliding movement is performed continuously, thereby reducing the reliability of the flexible circuit and shortening the lifespan.

Accordingly, the present invention is to solve the above conventional problems, an object of the present invention is to divide the wiring embedded in the flexible circuit of the electronic device into two parts, and to provide a certain space to facilitate the flow between the wiring. By providing a wiring slot, it is possible to provide a flexible circuit of an electronic device which can prevent the breakage of the joint portion of the flexible circuit and improve the function of the flexible circuit.

Another object of the present invention is to improve the fluidity of the flexible circuit by forming a wiring slot for providing a certain space to facilitate the flow between the wiring embedded in the flexible circuit of the electronic device, thereby stress applied to the flexible circuit It is to provide a flexible circuit of an electronic device, which can improve the reliability and extend the life of the product by preventing the damage by dispersing.

In order to achieve the above object, the present invention provides a flexible circuit of an electronic device having a circuit-side wiring connector electrically connected to a circuit board connector provided on a printed circuit board, and composed of a flexible circuit having a plurality of wirings To

The center of the flexible circuit is provided to be recessed at a predetermined depth along the longitudinal direction of the flexible circuit, divides the wiring into two parts on both sides of the longitudinal direction, and provides a predetermined space between the wirings. Characterized in that the wiring slot is configured.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. In addition, it should be noted that the same reference numerals denote the same functions as the conventional functions among the components.

As shown in FIG. 2, a circuit board connector 50 is provided on the printed circuit boards 24 and 34 of the electronic device 10 and is electrically connected to the circuit board connector 50. The flexible circuit 40 provided with 41 is comprised.

As shown in FIG. 5, the circuit-side wiring connector 41 is provided at both ends of the flexible circuit 40, and a plurality of wirings 42 are built in the flexible circuit 40. The wiring slot 100 is configured to be recessed at a predetermined depth along the longitudinal direction of the flexible circuit 40 at a central portion of the flexible circuit 40, and the wiring slot 100 is provided at both sides of the wiring slot 100. The 42 is divided into two parts, and a predetermined space is provided to improve flow during sliding movement of the terminal 10 between the wires 42.

6 and 7, both ends of the wiring slot 100 have a hemispherical bend, and both ends of the wiring slot 100 are circuit-side wiring to prevent breakage of the wiring slot 100. The connector 41 is inserted into a predetermined length.

8 and 9, the space between the wiring slot 100 and the wiring 42 is divided into two parts by the wiring slot 100 and spaced apart so that the wiring 42 can be bent or unfolded stably. 101 is provided, the separation space 101 is made of 0.3mm or more, the minimum width of the wiring slot 100 is made of 0.5mm or less to prevent the friction of the divided wirings (42). .

The wiring slot 100 is formed of a hole that is completely drilled.

The operation of the flexible circuit of the electronic device according to an embodiment of the present invention having the above configuration will be described in more detail with reference to FIGS. 5 to 9.

2, a sliding type portable terminal 10 is described as an example of an electronic device. In the sliding type terminal, a liquid crystal display device is provided in a main printed circuit board 24 and a sliding housing 30 in a main body housing 20. A printed circuit board 34 for LCD is provided.

As shown in FIG. 5, each of the printed circuit boards 24 and 34 is provided with a circuit board connector 50, and a circuit-side wiring connector provided in the flexible circuit 40 in the aircraft circuit board connector 50. 41) are electrically connected.

In this case, as shown in FIG. 6, since the wiring slot 100 is recessed in a central portion of the flexible circuit 40 at a predetermined depth along the longitudinal direction of the flexible circuit 40, the wiring slot 100 is provided. The wiring 42 embedded in the flexible circuit is divided into two by 100, and a predetermined space is provided between the wirings 42.

The wiring slot 100 is formed of a hole that is completely bored.

As shown in FIG. 7, both ends of the wiring slot 100 are curved in a hemispherical shape.

Both ends of the wiring slot 100 are inserted into the circuit side wiring connector 41 to have a predetermined length to prevent damage to the wiring slot 100.

In this state, when the sliding housing 30 is slid from the body housing 20, the flexible circuit 40 is flexibly bent or unfolded in accordance with the movement of the sliding housing 30.

At this time, the wiring slot 100 of the flexible circuit 40 can prevent the breakage of the joint of the circuit board connector 50 and the circuit-side wiring connector 41 according to the flow of the flexible circuit 40, the sliding operation Reduces stress on the flexible circuit 40

As shown in FIGS. 8 and 9, the wiring slot 100 and the wiring 42 are divided into two parts by the wiring slot 100 and spaced apart so as to stably bend or unfold the wiring 42. 101 is provided, the separation space 101 is made of 0.3mm or more.

In addition, the minimum width of the wiring slot 100 is less than 0.5mm to prevent friction of the wiring 42 divided into two parts.

The flexible circuit of the electronic device of the present invention described above is not limited to the above-described embodiments and drawings, and various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention. It will be apparent to those of ordinary skill in the art.

For example, the present invention can be applied to all portable terminals.

As described above, according to the flexible circuit of the electronic device according to the present invention,

By dividing the wiring embedded in the flexible circuit of the electronic device into two parts, and configuring the wiring slot to provide a certain space for easy flow between the wirings, it is possible to prevent the breakage of the joint portion of the flexible circuit to improve the function of the flexible circuit. In addition, it is possible to improve the fluidity of the flexible circuit, thereby dispersing the stress applied to the flexible circuit to prevent breakage, thereby improving the reliability of the product and extending the life.

Claims (7)

In a flexible circuit of an electronic device having a circuit-side wiring connector electrically connected to a circuit board connector provided on a printed circuit board, and composed of a flexible circuit having a plurality of wirings, The center of the flexible circuit is provided to be recessed at a predetermined depth along the longitudinal direction of the flexible circuit, divides the wiring into two parts on both sides of the longitudinal direction, and provides a predetermined space between the wirings. Flexible circuit of electronic equipment, characterized by constituting a wiring slot The flexible circuit of claim 1, wherein both ends of the wiring slot are formed in a hemispherical curve. The flexible circuit of claim 1, wherein both ends of the wiring slot are inserted into a circuit-side wiring connector by a predetermined length. The flexible circuit of claim 1, wherein a space is provided between the wiring slot and the wiring. The flexible circuit of claim 4, wherein the separation space is 0.3 mm or more. The flexible circuit of claim 1, wherein a minimum width of the wiring slot is 0.5 mm or less. The flexible circuit of claim 1, wherein the wiring slot is formed of a hole that is completely bored.

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