KR20060133244A - Lamp unit and liquid crystal display having the same - Google Patents

Abstract

A lamp unit and an LCD having the same are provided to reduce a time for coupling or separating between a connector and an inverter by installing a coupling portion to the connector and coupling the coupling portion with another connector. A lamp unit(310) including at least two lamps generates light. At least two wire portions(320,360) are connected to the lamps, respectively. At least two connectors(330a,330b) provides power to the lamp unit from the outside. At least two connectors are integrally formed. The connectors each includes a body(332a,332b) encompassing one end of the wire portion, a coupling hook(338a,338b) coupled to the inverter, and a connection unit(336a,336b) connecting power.

Description

Lamp unit and liquid crystal display having the same {LAMP UNIT AND LIQUID CRYSTAL DISPLAY HAVING THE SAME}

1 is an exploded perspective view showing a conventional liquid crystal display device.

2 is an exploded perspective view illustrating a liquid crystal display according to an exemplary embodiment of the present invention.

3 is a view showing a configuration and a connector of a lamp unit according to an embodiment of the present invention.

4A and 4B are views for explaining an inverter for supplying power to the connector and lamp unit of FIG. 3.

<Description of main parts of drawing>

10,110: liquid crystal display panel 20,120: driving circuit portion

30,130: backlight assembly 36,136: lamp unit

310: lamp 320, 360: wire part

330: connectors 332a, 332b: body

334: coupling portion 336a, 336b: connection portion

338a, 338b: fastening hook 520: inverter

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp unit and a liquid crystal display device having the same, and more particularly, to a lamp unit and a liquid crystal display device having the same that can improve assembly performance and productivity.

In general, as the modern society becomes information socialized, the importance of the liquid crystal display, which is one of the information display devices, is gradually increasing. Cathode ray tube (CRT), which is widely used so far, has many advantages in terms of performance and price, but has many disadvantages in terms of miniaturization or portability. On the other hand, the liquid crystal display device is more expensive in terms of price, but has been attracting attention as an alternative means of overcoming the disadvantages of the CRT due to advantages such as miniaturization, light weight, thinness, and low power consumption.

 In recent years, in order to satisfy the purpose of light and short reduction of the liquid crystal display device, continuous researches have been conducted on the respective members constituting the liquid crystal display device, such as a backlight, a connector, a printed circuit board (PCB), or a coupling structure. It is a trend.

As described above, the liquid crystal display includes a liquid crystal display panel, a driving circuit unit for generating various signals necessary for the liquid crystal display panel to implement an image, and a backlight assembly for providing light to the liquid crystal display panel.

1 is an exploded perspective view showing a conventional liquid crystal display device.

Referring to FIG. 1, the liquid crystal display device 1 includes a thin film transistor substrate 14 and a color filter substrate 12 facing the thin film transistor substrate 14. A liquid crystal (not shown) is injected between the color filter substrate 12, and an image is displayed by adjusting the light transmittance of the liquid crystal using a thin film transistor (TFT) as a switching element.

The driving circuit unit 20 may include a gate driver 22 for driving a gate line (not shown) of the liquid crystal display panel 10, a data driver 26 for driving a data line (not shown), and a gate driver ( 22) and a timing controller (not shown) for controlling the data driver 26, a liquid crystal display panel 10, and a power supply unit (not shown) for supplying power signals necessary for driving the driving circuits.

The backlight assembly 30 is largely divided into a direct method and an edge method. The direct method is to place a light source on the bottom of the liquid crystal display panel, and directly illuminate the front of the panel. As a light source, a plurality of cold cathode fluorescent lamps or external electrode fluorescent lamps are mainly used, and the edge method is one of the liquid crystal display panels. A light source is provided on the side or both sides, and a cold cathode fluorescent lamp or a hot cathode fluorescent lamp is used as the light source.

The backlight assembly 30 may include a lamp unit 36 for generating light, a light guide plate 34 for guiding the light, and a plurality of optical sheets for uniforming the brightness of light guided by the light guide plate 34. 38) and a reflection sheet 32 for increasing the efficiency of light.

However, the liquid crystal display device 1 is a light receiving element that receives light from the outside and is visible. Therefore, the backlight assembly 30 needs to be supplied with power from the outside in order to generate light. In this case, a connector (not shown) is required to connect power from the outside to the backlight assembly 30.

The liquid crystal display device goes through several processes and inspection processes before the liquid crystal display device is produced and shipped, such as a device assembly process, a component inspection, an aging process, and an image quality inspection. And decomposition is repeated. Therefore, the process is complicated and time-consuming during fastening and disassembly by hand every time, as well as assembly and productivity are deteriorated.

An object of the present invention is to provide a backlight unit and a liquid crystal display having the same, which can improve assembly and productivity.

In order to achieve the above object, the present invention provides a lamp having two or more lamps for generating light, at least two wires connected to each of the lamps, and at least two connectors for providing power to the lamp from the outside. It includes, and provides the lamp unit, characterized in that the at least two connectors are integrally formed.

The connector may include a body surrounding one end of the wire part, a fastening hook fastened to the inverter, and a connection part for connecting a power source.

The at least two lamps may include a first lamp and a second lamp, and the at least two wire parts may include a first wire part connected to the first lamp and a second wire part connected to the second lamp. The two connectors may include a first connector connected with the first lamp through the first wire part, and a second connector connected with the second lamp through the second wire part.

The body includes a first body for receiving the first wire portion of the first lamp and formed in the first connector, and a second body for receiving the second wire portion of the second lamp and formed in the second connector, The first body and the second body are characterized by receiving at least two or more lines and are integrated.

In order to integrate the at least two connectors is characterized in that it further comprises a coupling portion formed to protrude outward from the body side of each connector.

In order to achieve the above object, the present invention provides a liquid crystal display panel for implementing an image, a lamp having two or more lamps for supplying light to the liquid crystal display panel, a lamp cover, at least two wires connected to each of the lamps, And a lamp unit including at least two connectors for supplying power from the outside to the lamp, and an inverter for supplying power to the lamp, wherein the at least two connectors are integrally formed. To provide.

Here, the connector is characterized in that it comprises a body surrounding one end of the wire portion, a fastening hook to be connected to the inverter, and a connection for connecting a power source.

The at least two lamps may include a first lamp and a second lamp, and the at least two wire parts may include a first wire part connected to the first lamp and a second wire part connected to the second lamp. The two connectors may include a first connector connected with the first lamp through the first wire part, and a second connector connected with the second lamp through the second wire part.

The body includes a first body for receiving the first wire portion of the first lamp and formed in the first connector, and a second body for receiving the second wire portion of the second lamp and formed in the second connector, The first body and the second body are characterized by receiving at least two or more wires and integrated.

In order to integrate the at least two connectors is characterized in that it further comprises a coupling portion formed to protrude outward from the body side of each connector.

The fastening hook includes a first fastening hook formed on the first body and fastened to the first inverter, and a second fastening hook formed on the second body and fastened to the second inverter, and opposed to the inverter. It is characterized in that it is fitted into the groove formed on the inside.

On the other hand, the connecting portion is formed to extend outwardly facing the inverter from the body so that the end of the wire portion accommodated in the body is connected to the inverter, it is characterized in that fitted into the inside of the inverter.

The method of fastening the lamp unit according to the present invention includes the steps of providing at least two connectors integrally formed with each other by supplying power from the outside to at least two wire parts connected to each of the lamps having two or more lamps for generating light, and It provides a fastening method of the lamp unit comprising the step of fastening the inverter and the at least two connectors for supplying the power to the lamp.

The preparing of the connector may include preparing a connector including a body surrounding one end of the wire part, a fastening hook fastened to the inverter, a connection part for connecting a power source, and a coupling part for integrating at least two connectors. It features.

On the other hand, the step of coupling the connector and the inverter is inserted so that the upper, lower, left and right outer surface of the connection portion of the connector is in contact with the upper, lower, left and right inner surface of the inverter, the fastening of the connector It is characterized in that the hook is fitted into the groove formed inside the upper part of the inverter.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

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

Referring to FIG. 2, the liquid crystal display device 100 includes a liquid crystal display panel 110 for displaying an image by applying an image signal, a driving circuit unit 120 for driving the liquid crystal display panel 110, and a liquid crystal display panel. The backlight assembly 130 provides light to the 110, a bottom chassis 140 for accommodating the liquid crystal display panel 110 and the backlight assembly 130, a mold frame 150, and a top chassis 160. .

The liquid crystal display panel 110 includes a thin film transistor substrate 114 and a color filter substrate 112 facing the thin film transistor substrate 114. A liquid crystal (not shown) is injected between the thin film transistor substrate 114 and the color filter substrate 112 and the light transmittance of the liquid crystal is controlled by using a thin film transistor (TFT) formed in a matrix form as a switching element. Will be displayed. A gate line (not shown) is connected to a gate electrode (not shown) of the thin film transistor, a data line (not shown) is connected to a source electrode (not shown), and a pixel electrode (not shown) is connected to a drain electrode (not shown). Is formed. The color filter substrate 112 is formed with RGB pixels which are color pixels for displaying an image. Therefore, the light transmitted through the liquid crystal is expressed in a predetermined color through the RGB pixel to implement the image.

The driver circuit unit 120 includes a gate driver 122, a data driver 126, a timing controller (not shown), and printed circuit boards 124 and 128 to which various circuit elements are attached, and generates various signals necessary to implement an image. Let's do it. The gate printed circuit board 124 and the data printed circuit board 128 are electrically connected to data lines and gate lines (not shown) through the gate tape carrier package 121 and the data tape carrier package 125. Therefore, a power supply unit and a timing controller (not shown) mounted on the printed circuit boards 124 and 128 receive an electrical signal from the outside. Here, the timing controller and the power supply unit generate gate control signals and power signals using various electrical signals from the outside. The power and timing controllers on the data and gate printed circuit boards 124 and 128 may include driving signals and timing signals for controlling the driving and driving timing of the liquid crystal display panel 110. ) To a gate line and a data line (not shown).

The backlight assembly 130 is formed by the lamp unit 136, the reflective sheet 132 that prevents external emission of light generated from the lamp unit 136, the light guide plate 134 for guiding light, and the light guide plate 134. It consists of sheets such as a diffusion sheet 137 for diffusing the guided light, a prism sheet 138 for condensing the diffused light, and a protective sheet 139 for protecting the surface of the prism sheet 138. Provide light at 110. The reflective sheet 132 serves to reflect the light emitted from the lamp unit 136 to the light guide plate 134 and the light emitted downward. The light guide plate 134 is for uniformly transmitting light from the lamp to the screen display area. A transparent acrylic material having a thickness of about several mm is formed on the lower surface of the light guide plate 134 for uniform reflection of light. Grooves (not shown) are formed. The light guide plate 134 is formed to have a size corresponding to that of the liquid crystal display panel 110. Two or three sheets of the diffusion sheet 137 and the prism sheet 138 are appropriately combined to diffuse or condense the light from the light guide plate 134 to improve brightness or improve a viewing angle. The protective sheet 139 is installed on the diffusion sheet 137 or the prism sheet 138 to protect the sheets sensitive to dust or scratches and to prevent the flow of the sheets when only the backlight assembly 130 is transported. do.

The bottom chassis 140 has a rectangular frame shape and has a space for accommodating and supporting the backlight assembly 130 therein.

The mold frame 150 may be made of synthetic resin or plastic to insulate the driving circuit unit 120. The mold frame 150 accommodates the liquid crystal display panel 110 and the backlight assembly 130 to prevent flow and absorbs external shocks applied to the liquid crystal display panel 110 and the backlight assembly 130.

The top chassis 160 may cover the upper edge of the liquid crystal display panel 110 and the upper, lower, left, and right sides may cover the sides of the mold frame 150 and the bottom chassis 140.

Hereinafter, the lamp unit, which is an essential part of the present invention, will be described in detail.

3 is a view showing a configuration and a connector of a lamp unit according to an embodiment of the present invention.

Referring to FIG. 3, the lamp unit 136 includes a lamp cover (not shown) having one side open, a lamp 310 or more of two lamps accommodated in the lamp cover, and a wire for supplying power to the lamp 310. And an integrated connector 330 for supplying external power to the wires 320 and 360.

Lamp 310 is mainly a cold cathode fluorescent lamp (CCFL) is used, the light from the lamp 310 is directly transmitted to the light guide plate (not shown) or reflected from the lamp cover (not shown) to the light guide plate (not shown) Delivered. Two or more lamps 310 is composed of a first lamp 312 and the second lamp 314, the first and second lamps 312, 314 are inserted through the opening of the lamp cover (not shown). The lamp 310 functions to irradiate light to a liquid crystal display panel (not shown), and lamp holders 342, 343, 344 and 345 for protecting the lamp 310 from impact are inserted into and fixed to both ends of the lamp 310.

The lamp cover (not shown) protects the lamp 310 and functions to reflect light from the lamp 310 to the light guide plate (not shown).

Wire portions 320 and 360 connected to one end of the lamp 310 may include a first wire portion 320 connected to the first lamp 312 and a second wire portion 360 connected to the second lamp 314. Each of the wire parts 320 and 360 is divided into hot electrode lines 322 and 362 to which a high voltage is applied and cold electrode lines 324 and 364 to which a low voltage is applied. One end of the hot electrode line 322, 362 and the cold electrode line 324, 364 is connected to an electrode (not shown) at both ends of the lamp 310 to transfer power to the lamp 310, and the other end is connected to the connector 330. It is inserted. Hot electrode lines 322 and 362 are shorter than cold electrode lines 324 and 364. In this case, when the hot electrode lines 322 and 362 are formed long and drawn out to the side of the cold electrode lines 324 and 364, the peripheral circuit elements may be damaged by the high heat generated from the hot electrode lines 322 and 362 to which the high voltage is applied. The lines 324 and 364 are formed long and drawn out to the hot electrode lines 322 and 362.

The connector 330 includes a first connector 330a and a second connector 330b, and each connector 330 includes bodies 332a and 332b surrounding the other ends of the wire parts 320 and 360, and supplies power. And fastening hooks 338a and 338b fastened to the inverter, and connecting parts 336a and 336b connected to the power supply terminals of the inverter (not shown) and connecting the power supply. Here, the bodies 332a and 332b of the connector 330 are composed of a first body 332a and a second body 332b and accommodate at least two wires. The fastening hooks 338a and 338b are composed of a first fastening hook 338a formed on the upper outer side of the first body 332a and a second fastening hook 338b formed on the upper outer side of the second body 332b. . The connecting portions 336a and 336b are opposed to the bodies 332a and 332b so that the ends of the wires 320 and 360 accommodated in the bodies 332a and 332b of the connector 330 are connected to the inverters (not shown). Is formed to extend outwardly. The coupling part 334 is formed by protruding from the outer surfaces of the first connector 330a and the second connector 330b, and connects and integrates the first connector 330a and the second connector 330b. That is, one connector corresponding to the two lamps is required, and two connectors corresponding to the four lamps are required. Therefore, the time during the fastening and detaching process by the manual operation of the connector 330 and the inverter (not shown) can be cut in half, thereby improving assembly and productivity.

The bodies 332a and 332b, the fastening hooks 338a and 338b, and the engaging portion 334 of the connector are formed of an insulating material.

The fastening method of the lamp unit of the present invention as described above with reference to Figure 4 as follows.

As shown in FIGS. 4A and 4B, the inverter 520 is connected to the connector 330 to supply power to a lamp (not shown) and includes a first inverter 522 and a second inverter 524. .

In the lamp unit of 2 lamp type or more, the first lamp (not shown) is connected to the first wire part 320, the first wire part 320 is connected to the first connector 330a, and the first connector 330a. ) Is coupled to the first inverter 522 by a first fastening hook 338a. The second lamp (not shown) is connected to the second wire part 360, the second wire part 360 is connected to the second connector 330b, and the second connector 330b is connected to the second fastening hook 338b. Coupled to the second inverter 524. That is, the high voltage generated by the inverter 524 is applied to the hot electrode lines of the first and second wire parts 320 and 360 through the connector 330, and is supplied to one end of the lamp (not shown) through the hot electrode line. In addition, the low voltage generated by the inverter 520 is applied to the cold electrode lines of the first and second wire parts 320 and 360 through the connector 330, and to the other end of the lamp (not shown) through the cold electrode line. Supplied.

First, a lamp (not shown) connected to one end of the wire parts 320 and 360 and a lamp cover (not shown) surrounding the lamp are inserted into the mold frame 150. Next, the wire parts 320 and 360 connected to the other end of the connector 330 are pulled out of the mold frame 150. The wire parts 320 and 360 are pulled out of the mold frame 150 and then the ends of the wire parts 320 and 360 accommodated in the bodies 332a and 332b of the connector 330 are connected to the inverter 520. The connection portions 336a and 336b extending outward from the bodies 332a and 332b are inserted into the inverter 520. Here, the upper, lower, left and right outer surfaces of the connection portions 336a and 336b of the connector 330 are inserted into the inverter 520 to contact the upper, lower, left and right inner surfaces of the inverter 520, and the connector The connector 330 and the inverter 520 are fastened by fitting the fastening hooks 338a and 338b of the 330 into grooves (not shown) formed inside the upper part of the inverter 520. Meanwhile, the fastening hooks 338a and 338b of the connector 330 are composed of a first fastening hook 338a and a second fastening hook 338b, and the first fastening hook 338a is fastened with the first inverter 522. The second fastening hook 338b is fastened to the second inverter 524.

The structure of the connector is for explaining the present invention in detail and the present invention is not limited thereto. In addition, although this embodiment demonstrates the connector for lamp units by the example, this invention is applicable to all the connectors.

In addition, the connector according to the present invention is applicable not only to a liquid crystal display device but also to a display device such as a plasma display panel, a field emission device, an electroluminescent device, and the like, and is applicable to any device having a connector.

Persons having ordinary knowledge in the technical field to which the present invention pertains will be apparent that the present invention may be modified or modified in various ways without departing from the technical idea of the present invention.

As described above, the lamp unit and the liquid crystal display having the same according to the present invention may be provided with a coupling part in a connector to be coupled with another connector, thereby reducing the time when the connector and the inverter are mutually fastened or separated, thereby resulting in assembly and productivity. Can improve.

The technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (6)

Two or more lamps for generating light; and At least two wire parts connected to each of the lamps; and At least two connectors for providing power to the lamp from the outside; The lamp unit, characterized in that the at least two connectors are formed integrally. The method of claim 1, The connector includes a body surrounding one end of the wire part, a fastening hook fastened to the inverter, and a connection unit for connecting a power source. The method of claim 2, The two or more lamps include a first lamp and a second lamp, The at least two wire parts include a first wire part connected to a first lamp, and a second wire part connected to a second lamp, The at least two connectors have a first connector connected with the first lamp through the first wire part, and a second connector connected with the second lamp through the second wire part. The method of claim 3, wherein The body includes a first body for receiving the first wire portion of the first lamp and formed in the first connector, and a second body for receiving the second wire portion of the second lamp and formed in the second connector, And the first body and the second body receive at least two wires and are integrated. The method of claim 4, wherein The lamp unit further comprises a coupling portion formed by projecting outward from the side of the body of each connector to integrate the at least two connectors. A liquid crystal display panel which implements an image; A lamp unit including at least two lamps for supplying light to the liquid crystal display panel, a lamp cover, at least two wire parts connected to each of the lamps, and at least two connectors for supplying power from the outside to the lamps; And An inverter for supplying power to the lamp; And the at least two connectors are integrally formed.

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