KR20050077819A - Structure for circuit connection between mainboard and lcd module of mobile communication terminal - Google Patents

Abstract

The present invention is a clamshell mobile communication terminal comprising a main body with a built-in motherboard, a cover with a built-in LCD module, and a hinge module installed to rotate the cover from the main body, the central lower portion of the cover The first rotary coaxial penetrates a predetermined portion, and a second rotary coaxial having the same shape and size as the first rotary coaxial is provided at a position corresponding to the first rotary coaxial of the cover at the center of the hinge module. However, the main board and the LCD module are electrically connected to the first rotating coaxial and the second rotating coaxial by inserting and fixing a set of circuit connecting means into which a plurality of signal lines arranged in concentric circles are inserted. When the cover is rotated, the cover can be rotated without changing the existing circuit structure, so the cover can be rotated freely at the desired angle and direction. In the mobile communication terminal that provides a circuit connection structure between a main board and the LCD module.

Description

Structure for circuit connection between mainboard and LCD module of mobile communication terminal

The present invention relates to a circuit connection structure between a main board and an LCD module in a mobile communication terminal, and more particularly, a connection method of a main board mounted inside the main body and an LCD module mounted inside the cover in a folder type terminal. The present invention relates to a circuit connection structure between a main board and an LCD module in a mobile communication terminal in which a cover having a built-in LCD module is rotatable freely from a main body.

In recent years, thanks to the rapid development of communication technology, the functions of the mobile communication terminal are gradually expanded to enable the transmission of text messages and various information, as well as internet connection, and the transmission of video calls and image information.

As the spread of mobile communication terminals is widely used and wireless Internet services are commercialized, the demands of consumers related to mobile communication terminals are also diversified. In particular, recently, after opening a cover equipped with an LCD module from the main body, As is well known, it is configured to be able to rotate left and right so as to select the position of the LCD screen according to the user's discretion.

Hereinafter, a conventional clamshell mobile communication terminal will be described with reference to the accompanying drawings.

1 is a front view of a conventional clamshell mobile communication terminal in which a main body is opened, and shows a connection method of a main board and an LCD module.

As shown in FIG. 1, in the conventional clamshell mobile communication terminal, a main board 110 is embedded therein, and a pair of hinge knuckles 120 and 120 ′ are formed at opposite sides of the upper side, and various surfaces are formed on the surface thereof. A main body 100 having a key button 130 for inputting a signal, a function key 140 and a talker 150 for inputting an audio signal, and an LCD module 210 for outputting image information on one surface thereof; The cover 200 is provided with a receiving unit 220 for outputting an audio signal, and the hinge module 300 connects the cover 200 from the main body 100 so as to be rotatable in a vertical or horizontal direction. According to an arbitrary configuration, the cover can be rotated left and right. Since the hinge module 300 is already used a lot in the related art, a detailed description of the internal structure and operation thereof will be omitted.

In addition, the main board 110 and the LCD module 210 embedded in the cover 200 are built in the main body 100 are mutually connected by a flexible cable which is a flexible printed circuit (FPC) 160 having a film form. Electrically connected, as well as the connection between the main board 110 and the LCD module 210, most of the circuit connection structure is generally using this method.

However, in the folding type mobile communication terminal according to the conventional method, when the cover 200 is rotated from the main body 100, the FPC 160 forms a film and is coupled to the main board 110 and the LCD module 210. Since the cover 200 is rotated because the FPC 160 is also rotated together, which may cause damage due to the tensile force limit of the FPC 160, eventually, the cover 200 in one direction Not only the rotation is possible, but also the problem that it is impossible to rotate more than 360 °.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, an object of the present invention is to connect the main board and the LCD module mounted inside the cover of the main body and a plurality of signal lines in the form of concentric circles. The main board and the LCD module are connected to each other by a set of embedded circuit connection means connected to each other, thereby providing a circuit connection structure between the main board and the LCD module in the mobile communication terminal in which the cover is freely rotatable from the main body. Is in.

The present invention is a clamshell mobile communication terminal comprising a main body with a built-in motherboard, a cover with a built-in LCD module, and a hinge module installed to rotate the cover from the main body, the central lower portion of the cover The first rotating coaxial penetrates a predetermined portion therein, and a second rotating coaxial having the same shape and size as the first rotating coaxial at a position corresponding to the first rotating coaxial of the cover is formed at the center of the hinge module. Although the first rotation coaxial and the second rotation coaxial has a concentric circle therein, a set of circuit connection means in which a plurality of signal lines are arranged is inserted into the LCD module of the main board and the cover of the main body It is characterized in that it is electrically connected.

In addition, the circuit connecting means is a cylindrical body penetrated therein, a plurality of signal lines which are inserted into the inside of the body, the same length as the body and arranged in a concentric circle, and interposed between the signal line and the signal line It comprises an insulator to prevent interference between signals.

In addition, between the first rotational coaxial of the cover and the second coaxial of the hinge module is provided with a fixture for preventing the disassembly of the two coaxial.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings such that those skilled in the art can easily implement the present invention.

2 is a front view of a terminal showing a circuit connection state between a main board and an LCD module of a mobile communication terminal according to the present invention, and FIG. 3 is a cross-sectional view taken along line II of FIG.

2 to 4, the mobile communication terminal according to the embodiment of the present invention includes a main body 10 in which the main board 11 is built, a cover 20 in which the LCD module 21 is embedded, Electrically connecting the hinge module 30 connecting the main body 10 and the cover 20 and the main board 11 embedded in the main body 10 and the LCD module 21 embedded in the cover 20. It is configured to include a set of circuit connection means 40, 40 'for.

The main body 10 is provided with a key button 12 for inputting various signals, a function key 13 and a transmitter 14 for inputting a sound signal on the front, and a pair of hinge knuckles 15 ( 15 ') are formed to face the main body 10.

The cover 20 has a built-in LCD module 21 for outputting image information to be exposed on the surface, the upper end is provided with a receiver 22 for outputting an audio signal. In addition, the inner bottom is penetrated through the center, and comprises a first rotational coaxial shaft 23 protruding to the outside to form a cover 20.

The hinge module 30 is installed to be coupled between the hinge knuckles 15 and 15 ′ of the main body 10 so as to rotate the cover 20 from the main body 10. A second rotating coaxial shaft 33 having the same size and shape is additionally provided at a position corresponding to the first rotating coaxial shaft 23 of the cover 20 at an upper portion thereof.

On the other hand, a set of circuit connecting means 40, 40 'having the same shape and size is inserted into the first rotating coaxial 23 of the cover 20 and the second rotating coaxial 33 of the hinge module 30. do. This is a part constituting a feature of the present invention, as shown in Figure 3 has a plurality of signal lines 42 in the concentric form of the inside of the circuit connection means 40, 40 'is formed in a pair of one cover Two circuit connecting means (40) (40 ') by embedding in the first rotary coaxial (23) of 20 and embedding the other in the second rotary coaxial (33) of the hinge module (30). This connectable structure becomes

That is, the circuit connecting means 40, 40 'is a plurality of signal lines forming a concentric circle inside the body 41 having a cylindrical shape so as to be coupled to the first and second rotation coaxial 23, 33 ( 42 is inserted into a plurality of sectors so that one side is connected to the main board 11 or the LCD module 21, and the other side is installed to be exposed to the surface of the first and second rotating coaxial shafts 23 and 33. The two circuit connecting means 40, 40 'are connected to each other by the two rotational coaxial 23, 33 being in contact with each other, the main board 11 and the lid of the main body 10 by this connection The LCD module 21 of 20 is electrically connected.

At this time, in order to prevent signal interference between the signal lines 42, a rubber-like insulator 43 such as ZEBRA is inserted between the signal lines and the signal lines to realize contact and minimize friction during rotation. The rotational friction force can be reduced by inserting the conductive liquid between the two conductive surfaces during connection.

In addition, a fixture 50 is installed around the first rotating coaxial 23 of the cover 20 and the second rotating coaxial 33 of the hinge module 30 to prevent the disassembly of the two coaxial 23 and 33. do. That is, fixing grooves 23a and 33a are formed around the first rotational coaxial 23 and the second rotational coaxial 33, respectively, so that the upper and lower ends thereof may be fitted into the fixing grooves 23a and 33a. It is possible to prevent the disconnection of the two rotation coaxial (23, 33) by the fasteners 50, each of which has a fixing projection (50a) formed in the.

Therefore, the cross-sectional shape of a set of circuit connecting means 40, 40 'inserted into the first rotating coaxial 23 of the cover 20 and the second rotating coaxial 33 of the hinge module 30 is Since the main board 11 embedded in the main body 10 and the LCD module 21 embedded in the cover 20 are electrically connected by the connection of several signal lines 42 having concentric circles. When the cover 20 rotates, the existing circuit connection structure does not change, so that the bidirectional or 360 ° or more rotation is possible.

As mentioned above, although this invention was demonstrated in detail using the preferable embodiment, the scope of the present invention is not limited to a specific embodiment and should be interpreted by the attached claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

As described above, according to the connection structure between the main board and the LCD module in the mobile communication terminal according to the present invention, the main board and the LCD panel are electrically connected by the connection of signal lines having a concentric circle, and the desired angle and direction during use. Since the cover can be freely rotated, the convenience of use is improved, and the reliability of the rotating part generated during the rotation can be improved.

1 is a front view of a terminal showing a circuit connection state between a main board and an LCD module of a conventional mobile communication terminal.

2 is a front view of a terminal showing a circuit connection state between a main board and an LCD module of a mobile communication terminal according to the present invention.

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

* Description of symbols on main parts of the drawings *

A-mobile communication terminal 10-main unit

11-Motherboard 20-Cover

21-LCD Module 23-First Rotating Coaxial

30-hinge module 33-2nd rotating coaxial

23a, 33a-fixing groove 40,40 '-circuit connection means

41-Body 42-Signal Line

43-Insulation 50-Fixture

50a-fixing protrusion

Claims (3)

In the clamshell mobile communication terminal comprising a main body with a main board, a cover with a built-in LCD module, and a hinge module installed to rotate the cover from the main body. The first rotary coaxial penetrates the inner portion of the cover at a lower portion of the center, A second rotary coaxial having the same shape and size as the first rotary coaxial at a position corresponding to the first rotary coaxial of the cover is provided at the center of the hinge module, The LCD module of the main board and the cover of the main body is electrically connected to the first rotating coaxial and the second rotating coaxial by inserting and fixing a set of circuit connecting means into which a plurality of signal lines arranged in concentric circles are inserted. Circuit connection structure between the main board and the LCD module in the mobile communication terminal characterized in that the connection. The method of claim 1, The circuit connecting means is a cylindrical body through which the inside, A plurality of signal lines inserted into the body, the same length as the body and arranged in concentric circles; A circuit connection structure between the main board and the LCD module in the mobile communication terminal, characterized in that it comprises an insulating material interposed between the signal line and the signal line to prevent interference between each signal. The method of claim 1, A circuit connection structure between the main board and the LCD module in the mobile communication terminal, characterized in that a fixing device is installed between the first rotating coaxial of the cover and the second coaxial of the hinge module to prevent the disassembly of the two coaxial.