KR20120097980A - Portable communication device - Google Patents

Abstract

PURPOSE: A mobile communication device is provided to connect a speaker device of the mobile communication device with a main printed circuit board using an LED FPCB. CONSTITUTION: An LED assembly(229) includes a plurality of LED(Light Emitting Diodes)s(227), an LED FPCB(Flexible Printed Circuit Board)(260), and first to third FPCBs(261,263,265). A main PCB is electrically connected to the first FPCB. An LED driving circuit and a speaker device driving circuit are mounted on the main PCB. A receiver is electrically connected to the second FPCB. A speaker is electrically connected to the third FPCB.

Description

Portable communication device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable communication device including a liquid crystal display device, and to a portable communication device of light weight and thinness.

Liquid crystal display devices (LCDs), which are used for TVs and monitors due to their high contrast ratio and are advantageous for displaying moving images, are characterized by optical anisotropy and polarization of liquid crystals. The principle of image implementation by

Such a liquid crystal display is an essential component of a liquid crystal panel bonded through a liquid crystal layer between two side-by-side substrates, and realizes a difference in transmittance by changing an arrangement direction of liquid crystal molecules with an electric field in the liquid crystal panel. do.

Here, the liquid crystal panel requires a separate light source to display the difference in transmittance as an image because it does not have a light emitting element, and for this purpose, a backlight including a light source is disposed on the back of the liquid crystal panel.

These liquid crystal panels and backlights are modularized by case tops, support mains and cover bottoms.

The modular LCD module is finally modularized through a front cover and a rear cover together with a main printed circuit board.

Recently, the liquid crystal display device has been actively applied to personal portable electronic devices such as mobile phones, PDAs, navigation, PMP, MP3 as well as TV or monitors. In addition to the liquid crystal display module, portable communication devices such as mobile phones and PDAs have speaker devices and microphones. It will include the device.

The dual speaker device includes a receiver for a call with the other party and at least one speaker having a relatively larger output than the receiver, so as to selectively output the voice and music played by the terminal according to the corresponding active function. do.

In this case, the speaker and the receiver are each provided with a flexible printed circuit board (hereinafter referred to as FPCB) for electrically connecting with the main printed circuit board.

Recently, although such portable communication devices require a significantly lower weight and volume and require a lower product cost, there are too many components constituting the portable communication device, which hinders the lightweight and thinness of the portable communication device. .

In addition, as there are many components, it is also difficult to implement a low product cost due to high material costs.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and the present invention has a first object to implement a light weight and thinness of a portable communication device.

In addition, the second object is to reduce the material cost of the portable communication device.

In order to achieve the above object, the present invention provides a plurality of LEDs, an LED flexible printed circuit board (FPCB) on which the plurality of LEDs are mounted, and first to third FPCBs extending from the LED FPCB. A liquid crystal display module comprising an LED assembly; A main printed circuit board positioned on a rear surface of the liquid crystal display module and electrically connected to the first FPCB and having an LED driving circuit and a speaker driving circuit; A receiver electrically connected to the second FPCB; A speaker electrically connected to the third FPCB; And a front cover covering a front edge of the liquid crystal display module and a rear cover covering the rear surface of the liquid crystal display module and being assembled with the front cover, wherein the LED FPCB and the First to third power wirings are formed on the first FPCB, the first power wiring is electrically connected to the LED driving circuit, and the second and third power wirings are electrically connected to the speaker device driving circuit. It provides a portable communication device.

In this case, the second power wiring extends to the second FPCB, the third power wiring extends to the third FPCB, and one end of the first FPCB is connected to the first to third power wirings, respectively. First to third pad parts are provided and electrically connected to the main printed circuit board.

A pad electrode is formed at one end of each of the second and third FPCBs to be electrically connected to the receiver and the speaker, and the front cover has an open front surface to expose the liquid crystal display module. The front cover glass is located.

In addition, a key button is formed on one side of the front cover, a microphone device is provided on one side of the key button, and the first to third power wirings are the same layer on the LED FPC and the first to third FPCBs. It is formed on or in different layers.

In this case, the second FPCB and the third FPCB are respectively located at both ends of the LED FPCB, the liquid crystal display module module includes a backlight unit including the LED assembly; A liquid crystal panel mounted on the backlight unit; And a support main, a cover bottom, and a top cover for modularizing the backlight unit and the liquid crystal panel.

In addition, the backlight unit includes a light guide plate, a reflection plate, and an optical sheet.

As described above, in order to connect the receiver and the speaker which are the speaker device of the portable communication device including the liquid crystal display module using the LED as a light source according to the present invention with the main printed circuit board, a plurality of LEDs of the LED assembly By using the mounted LED FPCB, through this, there is an effect that does not need to provide a separate FPCB for connecting the receiver and the speaker with the main printed circuit board.

Through this, it is possible to implement a lighter and thinner, and at the same time have the effect of improving the efficiency of the process and lower the manufacturing cost.

1 is a perspective view schematically showing a portable communication device having a liquid crystal display module as a display screen according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of Fig. 1; Fig.
3 is an exploded perspective view of a liquid crystal display module according to an embodiment of the present invention.
Figure 4 is a plan view schematically showing the structure of an LED assembly according to an embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

1 is a perspective view schematically illustrating a portable communication device having a liquid crystal display module according to an embodiment of the present invention as a display screen, and FIG. 2 is an exploded perspective view of FIG. 1.

As shown, the portable communication apparatus 100 includes a front cover 300 and a rear cover for accommodating the liquid crystal display module 200 and the liquid crystal display module 200 for large images. cover: 400).

In this case, the front cover 300 is configured to display an image implemented in the liquid crystal display module 200 by opening a part of the front surface, and the liquid crystal display module 200 is protected on the opened front surface of the front cover 300. Cover glass 310 can be assembled and fastened.

Here, the cover glass 310 uses a specially processed tempered glass having excellent thermal durability, which is wrinkled due to thermal degradation due to heat emitted from the backlight unit 220 (see FIG. 3) of the liquid crystal display module 200. This is to avoid problems such as occurring.

In addition, a key button 321 is exposed through a plurality of holes 301 on the front lower side of the front cover 300, and a microphone that is a talker capable of transmitting a voice from the other party during a call at the bottom of the key button 321. Apparatus 800 is provided.

In addition, a speaker device 600 including a receiver 610 and a speaker 620 is provided at an upper end of the liquid crystal display module 200, and the receiver 610 may receive a voice of the other party during a call. It will play a role.

The speaker 620 provided on at least one side of the receiver 610 has a larger output than the receiver 610, and outputs voice and music selectively reproduced by the terminal according to the corresponding active function.

That is, the portable communication device 100 of the present invention, through the speaker 620 of the speaker device 600, not only for mobile communication, but also for listening to music (MP3 music, etc.), watching video (DMB-Digital Multimedia Broadcasting). It is used for many purposes that may be required on the move in modern people's lives, including viewing), camera photography, etc.

This portable communication device 100 is called a bar type portable communication device.

Here, a plurality of components are mounted on the rear surface of the liquid crystal display module 200 so that each component is connected to the liquid crystal display module 200 and the speaker device 600 through the FPCBs 260, 261, 263, 265 (see FIG. 3). And a main printed circuit board 500 electrically connected to each other to exchange power and signals with each other.

In this case, the receiver 610 and the speaker 620 of the speaker device 600 are separately connected to the main printed circuit board 500.

In addition, the keypad 320 in which the key button 321 is formed is preferably composed of key buttons 321 having a 3 × 4 arrangement for simple data input such as a phone number input of a counterpart or a short message.

Electrical signals input through the keypad 320 are transmitted to the main printed circuit board 500.

In addition, although not shown in the drawing, the upper end of the keypad 320 may further include a function key consisting of a menu call key, a call start / end key, etc. for utilizing various functions of the terminal.

At this time, the portable communication device 100 of the present invention, although the receiver 610 and the speaker 620 of the speaker device 600 are separately connected to the main printed circuit board 500, respectively, a separate FPCB (not shown) It is characterized in that it is not provided.

That is, the portable communication device 100 of the present invention does not separately configure an FPCB (not shown) for electrically connecting the main printed circuit board 500 to the receiver 610 and the speaker 620, and the liquid crystal display device module. It is to be electrically connected to the main printed circuit board 500 through the LED FPCB (260, see FIG. 3) provided in the (200).

Through this, the portable communication device 100 of the present invention can implement a lighter and thinner, and at the same time have an effect of improving the efficiency of the process and lowering the manufacturing cost.

This will be described in more detail with reference to FIG. 3.

3 is an exploded perspective view of a liquid crystal display module according to an embodiment of the present invention.

As shown, the liquid crystal display module 200 includes a liquid crystal panel 210 and a backlight unit 220, and a support main 230 and a cover bottom 250 for modularizing the liquid crystal panel 210 and the backlight unit 220. And the top cover 240 is configured.

Looking at each of these in more detail, the liquid crystal panel 210 plays a key role in image expression, and the first substrate 212 and the second substrate 214 bonded to each other with the liquid crystal layer interposed therebetween. Include.

In this case, although not shown in the drawings under the premise of an active matrix method, a plurality of gate lines and data lines intersect on the inner surface of the first substrate 212, commonly referred to as a lower substrate or an array substrate, to define a pixel. A thin film transistor (TFT) is provided at each crossing point to be connected one-to-one with a transparent pixel electrode formed in each pixel.

An inner surface of the second substrate 214 called an upper substrate or a color filter substrate may be a color filter of red (R), green (G), and blue (B) color, and the like, corresponding to each pixel. A black matrix is provided covering each of the gate lines, the data lines, and the thin film transistors. In addition, a transparent common electrode covering the red (R), green (G), and blue (B) colors and the black matrix is provided.

In addition, polarizing plates (not shown) for selectively transmitting only specific light are attached to the outer surfaces of the first and second substrates 212 and 214, respectively.

Along the at least one edge of the liquid crystal panel 210, the printed circuit board 217 is connected through a connecting member 216 such as a flexible circuit board or a tape carrier package (TCP) to support the modularization process. The side surface of the main 230 or the cover bottom 250 is properly folded to be in close contact.

When the thin film transistor selected for each gate line is turned on by the on / off signal of the gate driver circuit, the liquid crystal panel 210 transmits the signal voltage of the data driver circuit to the corresponding pixel electrode through the data line. The direction of the liquid crystal molecules is changed by the electric field between the pixel electrode and the common electrode, thereby indicating the transmittance difference.

In addition, the liquid crystal display according to the present invention is provided with a backlight unit 220 for supplying light from the rear surface of the liquid crystal panel 210 so that the difference in transmittance is expressed to the outside.

The backlight unit 220 includes an LED assembly 229, a white or silver reflecting plate 225, a light guide plate 223 mounted on the reflecting plate 225, and an optical sheet 221 interposed thereon.

The LED assembly 229 is located at one side of the light guide plate 223 so as to face the light incident surface of the light guide plate 223, and the LED assembly 229 has a plurality of LEDs 227 and a plurality of LEDs 227 spaced apart at regular intervals. LED mounted thereon includes a flexible printed circuit board (260).

The LED assembly 229 has a side view type in which light emitted from the plurality of LEDs 227 is parallel to the LED FPCB 260.

Here, the LED assembly 229 is electrically connected to the LED driving circuit (not shown) mounted on the main printed circuit board (500 of FIG. 2) closely attached to the rear surface of the liquid crystal display module 200, that is, the cover bottom 250. In this case, a plurality of LEDs 227 may be electrically connected to an LED driving circuit (not shown) mounted on the main printed circuit board (500 of FIG. 2). 1 FPCB 261 is extended.

Accordingly, the plurality of LEDs 227 of the LED assembly 229 may bend the first power line 267a (see FIG. 4) and the first FPCB 261 formed on the LED FPCB 260 and the first FPCB 261. By using the characteristic, it is connected to the LED driving circuit (not shown) mounted on the main printed circuit board (500 in Figure 2) on the back cover cover 250.

At this time, the driving circuit of the receiver (610 in FIG. 2) and the speaker (620 in FIG. 2), which are the speaker device (600 in FIG. 2) of the portable communication device (100 in FIG. 2), on the main printed circuit board (500 in FIG. 2). In speaker device driving circuit (not shown) is also mounted. For this purpose, the LED FPCB 260 and the first FPCB 261 of the LED assembly 229 of the present invention are provided with the second and third power wirings 267b, 267c, and FIG. 4), and the second FPCB 263 and the third power wiring 267c (see FIG. 4) from which the second power wiring 267b (see FIG. 4) extends are formed in the LED FPCB 260. It is characterized in that the 3 FPCB 265 is further extended.

Here, one end of the second FPCB 263 is electrically connected to the receiver (610 of FIG. 2) of the speaker device (600 of FIG. 2) provided in the portable communication device (100 of FIG. 2) and the third FPCB 265. ) Is electrically connected to the speaker (620 of FIG. 2) of the speaker device 600 (FIG. 2).

Accordingly, the receiver 610 of FIG. 2 and the speaker 620 of FIG. 2 are connected to the main printed circuit board through the LED FPCB 260 and the first to third FPCBs 261, 263, and 265 of the LED assembly 229. 500 of FIG. 2 and electrically connected to each other.

In more detail, the receiver 610 of FIG. 2 is electrically connected to one end of the second FPCB 263, which is connected to the LED FPCB 260 and the first FPCB of the LED assembly 229. By connecting to the main printed circuit board 500 (see FIG. 2) through the second power supply wiring 267b (see FIG. 4) formed on the 261, the receiver (610 of FIG. 2) is also connected to the main printed circuit board (500 of FIG. 2). ) Is electrically connected.

In addition, the speaker 620 of FIG. 2 is electrically connected to one end of the third FPCB 265, and the third FPCB 265 is on the LED FPCB 260 and the first FPCB 261 of the LED assembly 229. It is to be electrically connected to the main printed circuit board (500 in FIG. 2) through the third power supply wiring (267c, see Figure 4) formed in the.

Accordingly, the receiver 610 of FIG. 2 and the speaker 620 of FIG. 2 are connected to the main printed circuit board through the LED FPCB 260 and the first to third FPCBs 261, 263, and 265 of the LED assembly 229. 2 and 500, the receiver 610 of FIG. 2 and the speaker 620 of FIG. 2 are mounted on the main printed circuit board 500 of FIG. 2 (not shown). And are electrically connected to each other to exchange power and signals with each other.

Through this, the portable communication device (100 of FIG. 2) of the present invention uses the receiver (610 of FIG. 2) and the speaker (620 of FIG. 2) of the speaker device (600 of FIG. 2) as the main printed circuit board (500 of FIG. 2). By not having a separate FPCB for connecting to), through this, it is possible to implement a lighter and thinner, and at the same time have the effect of improving the efficiency of the process and lower the manufacturing cost.

We will discuss this in more detail later.

The light guide plate 223 into which the light emitted from the plurality of LEDs 227 is incident is spread evenly to a large area of the light guide plate 223 while the light incident from the LED 227 propagates through the light guide plate 223 by several total reflections. The surface light source is provided to the liquid crystal panel 210.

The light guide plate 223 may be formed of a plastic material such as polymethylmethacrylate (PMMA), which is one of transparent materials capable of transmitting light, or polycarbonate (PC). It is manufactured in a flat type.

The light guide plate 223 includes a pattern of a specific shape on the back surface to supply a uniform surface light source. The pattern is an elliptical pattern, a polygonal shape, to guide light incident into the light guide plate 223. Patterns (polygon patterns), hologram patterns (hologram patterns) and the like can be configured in various ways.

 The reflection plate 225 is disposed on the rear surface of the light guide plate 223 to reflect the light passing through the rear surface of the light guide plate 223 toward the liquid crystal panel 210 to improve the brightness of the light.

The optical sheet 221 on the light guide plate 223 includes a diffusion sheet and at least one light collecting sheet, and diffuses or condenses the light passing through the light guide plate 223 to provide a more uniform surface light source to the liquid crystal panel 210. Make it incident.

The liquid crystal panel 210 and the backlight unit 220 are modularized through the top cover 240, the support main 230, and the cover bottom 250. The top cover 240 is the top and side surfaces of the liquid crystal panel 210. A rectangular frame having a cross section bent in a shape of “a” so as to cover an edge thereof is configured to open an entire surface of the top cover 240 to display an image implemented in the liquid crystal panel 210.

In addition, the cover bottom 250, which is the basis for assembling the entire apparatus of the liquid crystal display module by mounting the liquid crystal panel 210 and the backlight unit 220, has a horizontal surface 251 closely contacting the rear surface of the backlight unit 220, and The edge consists of a side 253 bent vertically upward.

In addition, a square frame-shaped support main 230 mounted on the cover bottom 250 and having one edge open around the edges of the liquid crystal panel 210 and the backlight unit 220 is a top cover 240 and a cover. It is coupled with the bottom 250.

The support main 230 is provided with a protrusion 231 which distinguishes the positions of the liquid crystal panel 210 and the backlight unit 220 inward, and the liquid crystal panel 210 is seated and supported on the protrusion 231.

In this case, the top cover 240 may also be referred to as a case top or a top case, and the support main 230 may also be referred to as a guide panel or a main support and a mold frame, and the cover bottom 250 may be referred to as a bottom cover or a lower cover. It is also built.

Thus, the modular liquid crystal display module 200 is finally modularized through the front cover (300 of FIG. 2) and the rear cover (400 of FIG. 2), thereby completing the portable communication device (100 of FIG. 2).

As described above, the portable communication device (100 in FIG. 2) including the liquid crystal display module 200 according to the embodiment of the present invention includes a receiver (610 in FIG. 2) and a speaker of the speaker device (600 in FIG. 2). In order to connect the 620 of FIG. 2 to the main printed circuit board 500 of FIG. 2, a separate FPCB is used by using an LED FPCB 260 in which a plurality of LEDs 227 of the LED assembly 229 are mounted. It does not need to be provided separately.

Through this, it is possible to implement a lighter and thinner, and at the same time have the effect of improving the efficiency of the process and lower the manufacturing cost.

That is, when a receiver (610 of FIG. 2) and a speaker (620 of FIG. 2) of the speaker device (600 of FIG. 2) are respectively connected to the main printed circuit board (500 of FIG. 2) through a separate FPCB, the receiver (610 in FIG. 2) or the speaker (620 in FIG. 2) and the main printed circuit board (500 in FIG. 2) should be provided with a separate connector at both ends of the FPCB, the length of the FPCB will also increase.

In addition, since at least two separate FPCBs must be provided, the process time increases and the material cost increases according to the formation process thereof. In addition, the efficiency of the process is lowered as the process for connecting both ends of the FPCB separately provided is further required.

On the contrary, by extending a part of the LED FPCB 260 in which the plurality of LEDs 227 are mounted as in the present invention, the receivers 610 of FIG. 2 and the speaker 620 of FIG. There is no need to have all the connectors in the connector, and the length of the FPCB can be reduced.

Through this, the efficiency and process cost of the process can be reduced.

4 is a plan view schematically showing the structure of an LED assembly according to an embodiment of the present invention.

As shown, the LED assembly 229 includes a plurality of LEDs 227 and a plurality of LEDs 227, the LED FPCB 260 is mounted by a surface mount technology (SMT) spaced apart at regular intervals. Include.

That is, the LED FPCB 260 has a long bar shape, and the plurality of LEDs 227 are mounted at regular intervals along the length direction of the LED FPCB 260.

In this case, the plurality of LEDs 227 are connected in parallel through a plurality of metal wires 267a, 267b, and 267c formed on the LED FPCB 260, respectively, and are supplied with power. In this case, the plurality of LEDs 227 are respectively It emits light having red (R), green (G), and blue (B) colors, and by lighting the plurality of RGB LEDs 227 at once, white light by color mixing can be realized.

On the other hand, by using the LED 227 is configured LED chip (not shown) that emits all the colors of RGB, each of the LED 227 may be implemented to implement white light, or including a chip that emits white white LED 227 may be used to emit light.

Here, the LED FPCB 260 is composed of a base film (not shown) having a flexible (flexible) and a plurality of metal wires (267a, 267b, 267c) formed by patterning a conductive material on the base film (not shown). Is done.

The base film (not shown) serves to mount and support a plurality of metal wires 267a, 267b, and 267c and a plurality of LEDs 227 on top of each other.

In this case, the plurality of metal wires 267a, 267b, and 267c are formed not to overlap each other.

A cover layer (not shown) is formed on the plurality of metal wires 267a, 267b, and 267c as an organic or inorganic insulating material for protecting the plurality of metal wires 267a, 267b, and 267c.

In this case, the LED FPCB 260 includes first to third FPCBs 261, 263, and 265 formed by extending a portion of the LED FPCB 260, and one end of the first FPCB 261 is a main printed circuit board. 2 is electrically connected to 500 of FIG. 2, and one end of the second FPCB 263 is connected to the receiver 610 of FIG. 2 of the speaker device 600 of FIG. 2, and one end of the third FPCB 265 is connected thereto. It is connected to the speaker (620 of FIG. 2) of the speaker device (600 of FIG. 2).

At this time, at one end of the second FPCB 263 and the third FPCB 265, pad electrodes 269a and 269b for electrical connection between the receiver 610 of FIG. 2 and the speaker 620 of FIG. 2 are formed, respectively. have.

In addition, a plurality of metal wires formed on the LED FPCB 260 and the first FPCB 261 are divided into first to third power wires 267a, 267b, and 267c, and the second power wire 267b is divided into a plurality of metal wires. 2 extending to the FPCB 263, the third power supply wiring 267c is formed to extend to the third FPCB (265).

Here, the first power line 267a serves to transfer on / off signals of the plurality of LEDs 227 mounted on the LED FPCB 260, and the second power line 267b It serves to transmit and receive the power and the signal of the receiver (610 of FIG. 2) of the speaker device (600 of FIG. 2), the third power wiring 267c is a speaker (620 of FIG. 2) of the speaker device (600 of FIG. ) And exchanges power and signals.

Thus, the receiver (610 of FIG. 2) and the speaker (620 of FIG. 2) of the speaker device (600 of FIG. 2) are connected to the main printed circuit board (500 of FIG. 2) through the first FPCB 261 of the LED FPCB 260. And the receiver (610 of FIG. 2) and the speaker (620 of FIG. 2) are electrically connected to the speaker device driving circuit (not shown) mounted on the main printed circuit board (500 of FIG. 2). Give and receive.

In more detail, the receiver 610 of FIG. 2 is configured to provide power and signals with a speaker device driving circuit (not shown) mounted on the main printed circuit board 500 (see FIG. 2) through the second power line 267b. In this case, the second power line 267b is formed on the second FPCB 263, the LED FPCB 260, and the first FPCB 261 connected to the receiver 610 of FIG. 2, thereby receiving the receiver ( 610 of FIG. 2 is electrically connected to the main printed circuit board 500 of FIG. 2 through the second FPCB 263, the LED FPCB 260, and the second power wiring 267b formed on the first FPCB 261. Will be connected.

In addition, the speaker 620 of FIG. 2 exchanges power and signals with a speaker device driving circuit (not shown) mounted on the main printed circuit board (500 of FIG. 2) through the third power line 267c. The third power wiring 267c is formed on the third FPCB 265, the LED FPCB 260, and the first FPCB 261 connected to the speaker 620 of FIG. 2, so that the speaker 620 of FIG. The third FPCB 265, the LED FPCB 260, and the third power line 267c formed on the first FPCB 261 are electrically connected to the main printed circuit board (500 of FIG. 2).

At this time, one end of the first FPCB 261 connected to the main printed circuit board (500 of FIG. 2) is provided with a pad portion 271 for electrical connection of the main printed circuit board (500 of FIG. 2), The pad part 271 may include a first pad part 271a connected to the first power supply line 267a, a second pad part 271b connected to the second power supply line 267b, and a third power supply line 267c. A third pad part 271c to be connected is provided.

Accordingly, a plurality of LED power supply circuits (not shown) are mounted on the main printed circuit board (500 of FIG. 2) through the first pad 273a formed in the first pad part 271a to the first power wiring 267a. The on / off signal of the LED 227 of the speaker 131 is transferred to the second power supply line 267b through the second pad 273b formed in the second pad part 271b. A speaker device driving circuit (not shown) to exchange power and signals between the receiver (610 of FIG. 2) and the third power line 267c through a third pad 273c formed in the third pad portion 271c. A power and a signal of the speaker (620 of FIG. 2) are exchanged with each other.

On the other hand, the LED FPCB 260 of the present invention is composed of a plurality of layer (layer) layer, the second power wiring 267b is formed on another layer on the LED FPCB 260 in the region where the LED 227 is mounted By connecting through a via hole (not shown), through this, it is possible to reduce the width of the LED FPCB 260.

In contrast, the second power supply wiring 267b may also be formed on the LED FPCB 260 so as not to overlap with the first and third power supply wirings 267a and 267c.

In addition, the second and third FPCBs 263 and 265 are located at both ends of the LED FPCB 260, thereby receiving the receiver (610 in FIG. 2) and the speaker (620 in FIG. 2) of the speaker device (600 in FIG. 2). It is desirable to make it easier to connect with.

As described above, the portable communication device (100 in FIG. 2) including the liquid crystal display module 200 according to the embodiment of the present invention includes a receiver (610 in FIG. 2) and a speaker of the speaker device (600 in FIG. 2). In order to connect the 620 of FIG. 2 to the main printed circuit board 500 of FIG. 2, a separate FPCB is used by using an LED FPCB 260 in which a plurality of LEDs 227 of the LED assembly 229 are mounted. It does not need to be provided separately.

Through this, it is possible to implement a lighter and thinner, and at the same time have the effect of improving the efficiency of the process and lower the manufacturing cost.

The present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

227: LED, 229: LED assembly, 260: LED FPCB
261, 263, 265: first to third FPCBs
267a, 267b, and 267c: first to third power supply wiring
269a and 269b: pad electrode
271: pad portion 271a, 271b, 271c: first to third pad portions
273a, 273b, 273c: first to third pads

Claims (10)

A liquid crystal display module including a plurality of LEDs, an LED flexible printed circuit board (FPCB) on which the plurality of LEDs are mounted, and an LED assembly including first to third FPCBs extending from the LED FPCB;
A main printed circuit board positioned on a rear surface of the liquid crystal display module and electrically connected to the first FPCB and having an LED driving circuit and a speaker driving circuit;
A receiver electrically connected to the second FPCB;
A speaker electrically connected to the third FPCB;
A front cover covering the front edge of the LCD display module and a rear cover covering the rear surface of the LCD display module and being assembled to the front cover.
The first and third power wirings are formed on the LED FPCB and the first FPCB, wherein the first power wiring is electrically connected to the LED driving circuit, and the second and third power wiring are And a portable communication device electrically connected to the speaker device driving circuit.
The method of claim 1,
And the second power line extends to the second FPCB, and the third power line extends to the third FPCB.
The method of claim 1,
One end of the first FPCB is provided with a first to third pad portion connected to the first to third power wiring, respectively, the portable communication device electrically connected to the main printed circuit board.
The method of claim 1,
A pad electrode is formed at one end of each of the second and third FPCBs, and is electrically connected to the receiver and the speaker.
The method of claim 1,
The front cover has a front opening so that the liquid crystal display module is exposed, and the cover glass is located on the open front of the portable communication device.
The method of claim 5, wherein
A key button is formed on one side of the front cover, a portable communication device provided with a microphone device on one side of the key button.
The method of claim 1,
The first to third power wirings are formed on the same layer or different layers on the LED FPC and the first to third FPCB.
The method of claim 1,
And the second FPCB and the third FPCB are respectively located at both ends of the LED FPCB.
The method of claim 1,
The liquid crystal display module includes a backlight unit including the LED assembly; A liquid crystal panel mounted on the backlight unit; And a support main, a cover bottom, and a top cover for modularizing the backlight unit and the liquid crystal panel.
The method of claim 9,
The backlight unit includes a light guide plate, a reflector and an optical sheet.

Images