KR101162948B1 - Structure for supporting flexible printed circuit in portable terminal - Google Patents

Abstract

The present invention relates to a portable terminal including a main body and a sub body performing a predetermined opening and closing operation in the main body, the main board being installed in the main body and including a predetermined connector, and installed in the sub body. And a slave board including a predetermined connector, and one end of which is connected to a connector of the main board, and the other end of which is connected to a connector of the slave board, at least one layer electrically connecting the main body and the sub body. And a flexible printed circuit having the flexible printed circuit, wherein the portion of the main board that is subjected to the interference of the flexible printed circuit when the sub-body flows is formed of a guide slit having a predetermined width and a predetermined length so that the flexible printed circuit includes the flexible printed circuit. It can be selectively protruded to the back of the main board and has a certain depth in the guide slit. By applying the shield can, it provides a separate space to selectively accommodate the margin of the flexible printed circuit according to the operation of the sub body, thereby preventing the wear and the damage caused by the irregular flow of the flexible printed circuit. As a result, even when used for a long time, it is possible to ensure the operation reliability of the terminal.

Slide, rotation, terminal, flexible printed circuit, shield can

Description

Flexible printed circuit support structure of portable terminal {STRUCTURE FOR SUPPORTING FLEXIBLE PRINTED CIRCUIT IN PORTABLE TERMINAL}

1 is a perspective view illustrating a state in which a sub body of a portable terminal to which a flexible printed circuit support structure according to the present invention is applied is slid;

2 is a perspective view illustrating a state in which the sub body is rotated 90 degrees in the state of FIG. 1 according to the present invention;

3 is an exploded perspective view illustrating a state in which the flexible printed circuit according to the present invention is installed on a board of a main body and a board of a sub body;

Figure 4 is a sectional view of the main portion showing the assembled state of Figure 3 according to the present invention;

5 is a plan view schematically showing the state of FIG. 4 according to the invention;

6 is a plan view schematically showing a state in which the sub body is rotated in the state of FIG. 4 according to the present invention; And

7 is a perspective view showing the shape of the shield can according to another embodiment of the present invention.

The present invention relates to a supporting structure of a flexible printed circuit (FPC) of a portable terminal in which the sub body is configured to perform a predetermined operation on the main body. In particular, any operation of the sub body is caused by deterioration or wear. The present invention relates to a flexible printed circuit supporting structure of a portable terminal which is implemented to prevent breakage of a printed circuit in advance and to not affect antenna radiation performance.

With the development of the electronic communication industry, portable wireless terminals are becoming smaller and thinner, and their functions are becoming more diverse. For example, a speaker device capable of implementing melody of various chords is installed, and a color display device of tens of thousands to hundreds of thousands of pixels is implemented. In addition, the music listening function through the MP3 player other than the basic call function is implemented in the terminal, and various game contents using the display device are being provided, and the situation is racing to further develop such a function.

The above-described portable wireless terminal has been introduced with various functions corresponding to the above-described high-definition color display device. For example, the portable wireless terminal can be used as a video communication, a digital camera, or a camcorder. An optical imaging device such as a small lens assembly may be provided in the terminal.

A terminal to which the various functions described above are added is generally a foldable terminal, and includes a main body and a sub body opened at an angle on the main body. In addition to the folding terminal, a slide type terminal which is opened by sliding a predetermined length in the longitudinal direction of the terminal on the main body has also been continuously released. Moreover, in recent years, since the digital meida broadcasting (DMB) function, video-on-demand function or various multimedia games are mounted on the terminal, only a display device installed only in the longitudinal direction of the terminal can enjoy video calls, movies, games, etc. Problems will arise. Accordingly, in recent years, slide and rotation type terminals have been released. The slide-and-rotation type terminal is a modified form of the slide type terminal, and rotates about 90 degrees while the slide body is opened in the main body to display the display device horizontally, thereby supplementing user convenience of various terminals. There is a situation.

As described above, terminals in which a sub body flows in the main body of the terminal use a flexible printed circuit (FPC) that electrically connects the main board of the main body and the slave board of the sub body. The flexible printed circuit is used as a single layer or a plurality of layers, and one end is electrically connected to the connector of the main board and the other end is connected to the connector of the slave board, thereby supplying the main body power to the sub body and simultaneously mounted on the main board. By controlling the overall operation of the sub body.

However, as described above, various types of open terminals that are slid or rotated on the main body and then rotated are complicated and diverse, and thus, when the flexible printed circuit is simply electrically connected with a predetermined length, it is frequently used. The flexible printed circuit may be damaged by wear or fatigue caused by the operation of the sub body, causing malfunction of the device, and in recent years, the flexible printed circuit may be twisted or curled according to the operation of the sub body in a terminal to which an embedded antenna module is applied. There is a problem as a cause of lowering the antenna radiation performance by the phenomenon.

SUMMARY OF THE INVENTION An object of the present invention is to provide a flexible printed circuit support structure of a portable terminal configured to implement a constant terminal operation even after a long period of time.

Another object of the present invention is to provide a flexible printed circuit support structure of a portable terminal configured to secure operation reliability of a terminal by preventing damage due to wear or fatigue even after long use.

Still another object of the present invention is to provide flexible printing of a portable terminal, which can prevent the twisting or curling during the operation of the sub body, thereby inducing a constant radiation performance of the terminal antenna device, and consequently improving the terminal call quality. It is to provide a circuit support structure.

A still further object of the present invention is to provide a flexible printed circuit supporting structure of a portable terminal, in which a separate shield can is applied to prevent antenna performance from being deteriorated by the shape deformation of the flexible printed circuit during operation of the sub-body. have.

In order to solve the above object, the present invention provides a portable terminal including a main body and a sub body performing a predetermined opening and closing operation in the main body, is installed in the main body, a predetermined connector A main board including a main board, a slave board installed at the sub body, and one end connected to a connector of the main board, and the other end connected to a connector of the slave board; A flexible printed circuit having at least one layer for electrically connecting the body, wherein a portion of the main board interfered with the flexible printed circuit when the sub body flows has a predetermined width and a predetermined length; Formed by a guide slit to selectively feed the flexible printed circuit to the back of the main board. Features that allow invoked.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the case where it is determined that the gist of the present invention may be unnecessarily obscured, the detailed description thereof will be omitted.

In describing the present invention, the Applicant has shown and described a slide and rotation type terminal. However, the flexible printed circuit (FPC) supporting structure according to the present invention may be applicable to other terminals such as a slide type terminal and a pop-up type terminal.

1 is a perspective view illustrating a state in which a sub body of a portable terminal device to which a flexible printed circuit support structure is applied according to the present invention is slid, and FIG. 2 is rotated 90 degrees in the state of FIG. 1 according to the present invention. It is a perspective view which shows the state.

1 and 2, the slide and rotation terminal 1 according to the present invention has a predetermined length in the longitudinal direction of the main body 10 and the main body 10 in the main body 10, as shown in FIGS. It includes a sub body (20) sliding to the. In addition, as shown in FIG. 2, the sub body 20 has a configuration in which the sub body 20 is rotated at a predetermined angle (generally rotated by about 90 degrees) about the axis X in the state of sliding in the main body 10. Such a configuration may be very useful when making a video call, watching a movie, playing a game, etc. using the terminal 1.

The keypad assembly 11 including a plurality of key buttons is installed on the visible surface when the sub body 20 of the main body 10 is opened. Preferably, the keypad assembly 11 may be arranged 3 × 4 numeric key button. In addition, an upper keypad assembly 11 of the main body 10 is provided with an auxiliary keypad assembly 12 which can be seen when the sub body 20 is rotated. The auxiliary keypad assembly 12 may be provided with key buttons applied to the mode of rotating the sub body 20 to be used. The microphone device 13 is installed below the keypad assembly 11 as a transmitter for transmitting a user's voice to the other party during a call.

The sub body 20 is provided with a display device 21 over its entire surface. The display device 21 may be installed as a color wide TFT LCD module, and it may be more preferable to apply a touch screen method. A plurality of further keypad assemblies 24 are installed below the display apparatus 21 (below the reference to FIG. 1). The keypad assembly 24 may be provided with function keys for implementing the basic operation of the terminal 1 without the sub body 20 being opened from the main body 10. For example, a navigation key button, a mode switch key button, etc. may be applied. In the upper part of the display device 21 (at the upper part with reference to FIG. 1), a speaker device 22 that is capable of listening to the other party's voice as a receiver during the call of the terminal 1 is installed. In addition, the speaker unit 23 is installed under the sub body 20 so that the two speaker devices 22 and 23 can listen to the voice in a stereo manner when listening to music, watching movies, or playing games. It can be.

Meanwhile, the terminal 1 according to the present invention employs an internal antenna module (30 of FIG. 3) in which an antenna device is installed inside the terminal. More specifically, the internal antenna module 30 includes the main body. It may be installed in the back of the main board (100 in Figure 3) is installed in the interior of (10). In addition, the sub body 20 and the main body 10 are electrically connected to each other by a predetermined electrical connection means therein to receive power from the main body 10 as well as to supply the sub body 20 to the main body 10. ) Is implemented to control. The electrical connection means is typically applied to a single, multilayer or multilayer flexible printed circuit (50 in FIG. 3) having a certain width and a certain thickness. Hereinafter, the supporting structure of the flexible printed circuit 50 according to the present invention will be described.

3 is an exploded perspective view illustrating a state in which a flexible printed circuit according to the present invention is installed on a board of a main body and a board of a sub body, and FIG. 4 is a cross-sectional view illustrating main parts of the assembled state of FIG. 3 according to the present invention. As shown in FIG. 1, a main board (RF board) 100 installed in a main body (10 of FIG. 1) and a slave board 200 installed in a sub body (20 of FIG. 1) are illustrated. The slave board 200 is a known board on which an LCD module used as the display device 21 of the sub body 20 is mounted.

Meanwhile, predetermined connector devices 102 and 202 are protruded on the front surface of the main board 100 and the rear surface of the slave board 200, and the flexible printed circuit having a predetermined length is provided on the connector devices 102 and 202. Each end of 50 has a configuration in which each end is electrically connected. At this time, the flexible printed circuit 50 should be given a length longer than the operating range of the sub body 20. Therefore, it is not a problem when the slave board 200 coincides with the main board 100, but the slave board 200 is slid from the main board 100 in an open state, and is flexible when rotated in this state. The printed circuit 50 remains, resulting in a shape that is curled or twisted.

Therefore, in the present invention, as shown in FIG. 4, the guide slit 101 is formed at a portion where the flexible printed circuit 50 of the main board 100 is curled and in contact with the flexible printed circuit 50. The margin is to penetrate the guide slit 101 of the main board 100 to the back of the main board 100 to prevent twisting or curling.

More preferably, the present invention protects the flexible printed circuit 50 which partially protrudes through the guide slit 101 of the main board 100 to the rear and is installed on the main board 100 at the same time. The metallic shield can 40 is further installed to prevent degradation of the radiation performance of the antenna module 30. The shield can 40 has a space 41 having a predetermined depth, and the flange 42 is formed along the edge of the shield can 40 and soldered to the main board 100 in a SMD (Surface Mounted Device) manner. Furthermore, the shield can 40 protrudes to the rear side of the main board 100 and the flange 42 is caught around the guide slit 101 at the front of the main board 100 so that the operational reliability of the flexible printed circuit 50 can be achieved. To further secure. The built-in antenna module 30 has a configuration in which the antenna radiator 33 is supported on the antenna carrier 31 having a predetermined depth 32. Preferably, the shield can 40 may be installed to be located on the inner space 32 of the antenna carrier 31, as shown in FIG. The shield can 40 may be formed of a material such as SUS, copper, copper, or an alloy thereof.

As described above, the shield can is manufactured in a box type to have a predetermined depth and implemented to be closed on all four surfaces. However, the present invention is not limited thereto, and shield cans of various shapes may be applied depending on the shape or mounting space of the terminal to be applied.

As part of this example, the shape of the shield can 400 according to another embodiment of the present invention is illustrated in FIG. 7. The illustrated shield can 400 also takes the form of a box having a predetermined space 401 and includes a flange 402 formed along an edge. However, only three sides were closed and the other side had an open portion 403. The open portion 403 is positioned in the direction in which the flexible printed circuit 50 is connected to the connector 102 when the shield can 400 is installed on the main board 100 (in the direction of the arrow in FIG. 7). The interference of the shield can 400 due to the sliding operation and the rotation operation of the terminal 1 may be excluded.

5 is a plan view schematically showing a state of FIG. 4 according to the present invention, and FIG. 6 is a plan view schematically showing a state in which a sub body is rotated in the state of FIG. 4 according to the present invention.

The support structure of the flexible printed circuit 50 according to the present invention may slide the slave board 200 in the main board 100 (FIG. 5), or rotate the slave board 200 at an angle in this state. The flexible printed circuit 50 always flows in the inner space (41 of FIG. 3) of the shield can 40 mounted on the guide slit 101 of the main board 100.

Apparently, there are many ways to modify these embodiments while remaining within the scope of the claims. In other words, there may be many other ways in which the invention may be practiced without departing from the scope of the following claims.

The flexible printed circuit structure according to the present invention provides a separate space that can selectively accommodate the flexible printed circuit margin according to the operation of the sub-body, the damage caused by wear and fatigue caused by the irregular flow of the flexible printed circuit As a result, it is possible to secure the reliability of the terminal even after long use.

Claims (8)

A portable terminal comprising a main body and a sub body performing a predetermined opening and closing operation in the main body, A main board installed in the main body and including a predetermined connector; A slave board installed in the sub body and including a predetermined connector; One end is connected to the connector of the main board, the other end includes a flexible printed circuit having at least one layer connected to the connector of the slave board to electrically connect the main body and the sub body, When the sub-body flows, the portion of the main board which is interfered with by the flexible printed circuit is formed as a guide slit having a predetermined width and a predetermined length so that the flexible printed circuit can selectively protrude to the rear surface of the main board. Flexible printed circuit support structure of a portable terminal, characterized in that to enable. The method of claim 1, The built-in antenna radiator supported by a carrier having a predetermined depth is installed on a rear surface of the main board on which the flexible printed circuit is protruded, and the flexible printed circuit protrudes into the antenna carrier. Flexible printed circuit support structure. 3. The method of claim 2, The guide slit of the main board protruding the flexible printed circuit is a flexible printed circuit support structure of a portable terminal, characterized in that a shield can of a certain shape is further installed to avoid interference of the built-in antenna radiator. The method of claim 3, The shield can is installed on the rear surface of the main board, the flexible printed circuit supporting structure of the portable terminal, characterized in that it is formed to have a depth that is installed on the inner space of the antenna carrier. The method of claim 4, wherein The shield can is a flexible printed circuit support structure of a portable terminal, characterized in that the flange is formed to protrude regularly along the rim so that the flange is caught around the guide slit on the front of the main board. The method of claim 5, The shield can is a flexible printed circuit support structure of a portable terminal, characterized in that soldered to the main board by the SMD method. The method of claim 6, The shield can is a flexible printed circuit support structure of a portable terminal, characterized in that formed of any one or two or more alloys of SUS, aluminum copper material. The method according to any one of claims 1 to 7, The terminal to which the flexible printed circuit is applied is a flexible printed circuit supporting structure of a portable terminal, characterized in that a slide type terminal or a slide and rotation type terminal.

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