KR20060016877A - Back light assembly and display apparatus having the back light assembly - Google Patents

Abstract

A backlight assembly and a display device having the same prevent a disconnection of power supply lines. The backlight assembly includes a lamp unit and a container. The lamp unit includes a lamp, power supply lines for supplying power required to generate light from the lamp and connected to the lamp, and a connector connected to the ends of the power supply lines. The storage container has a storage space for accommodating the lamp by the bottom surface and the side wall, and a connector coupling portion coupled to the connector is formed at a predetermined position. As such, the connector is coupled to the connector coupling part and disposed inside the storage container, thereby preventing disconnection of power supply lines connected to the connector.

Description

BACK LIGHT ASSEMBLY AND DISPLAY APPARATUS HAVING THE BACK LIGHT ASSEMBLY}

1 is a perspective view illustrating a backlight assembly according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along line I1-I2 of FIG. 1.

3 is a perspective view illustrating a backlight assembly according to a second embodiment of the present invention.

4 is an exploded perspective view illustrating a display device according to a third exemplary embodiment of the present invention.

5 is a perspective view partially cutaway of the display device of FIG. 4.

FIG. 6 is a cross-sectional view taken along the line II1-II2 of FIG. 5.

<Explanation of symbols for the main parts of the drawings>

    100: backlight assembly 200: lamp unit

    210: power supply wires 220: connector

    300: storage container 312, 322: connector coupling portion

    1000: display device 500: lamp unit

    530: first connector 600: storage container

    700: inverter 720: second connector                 

    800: display panel 900: optical member

The present invention relates to a backlight assembly and a display device having the same. More specifically, the present invention relates to a backlight assembly and a display device which prevents disconnection of a power supply line for providing driving power to a lamp.

In general, an information processing apparatus includes a display device for displaying processed data as an image, for example, a liquid crystal display (LCD) or a cathode-ray tube.

Among them, the liquid crystal display displays an image by using the electrical and optical characteristics of the liquid crystal. Compared to the cathode ray tube display device, the liquid crystal display device has a thin thickness and a light weight, and has advantages of low power consumption and low driving voltage.

For these reasons, the liquid crystal display device has recently been used as a display device of various electronic devices such as a desktop computer, a notebook computer and a mobile phone.

Conventional liquid crystal display devices include a display panel for displaying an image using light, a backlight assembly for providing light to the display panel, and an inverter for supplying power to the backlight assembly. .                         

The backlight assembly includes a lamp for generating light, power supply lines for providing driving power to the lamp, a connector connected to an end of the power supply lines, and a storage container accommodating the lamp.

The power supply line and the connector of the conventional backlight assembly are disposed outside the housing and electrically connected to the connector of the inverter disposed outside the backlight assembly. However, as the power supply line and the connector of the backlight assembly are disposed outside the housing, the power wires connected to the connector are disconnected from the lamp during the assembly process of the liquid crystal display.

Accordingly, the present invention has been made in view of such a conventional problem, and a first object of the present invention is to provide a backlight assembly which prevents disconnection of a power supply line connected to a lamp by fixing a connector connected to a power supply line to a storage container.

A second object of the present invention is to provide a display device having the backlight assembly.

The backlight assembly for achieving the first object of the present invention includes a lamp unit and a housing. The lamp unit includes a lamp, power supply lines for supplying power required to generate light from the lamp and connected to the lamp, and a connector connected to the ends of the power supply lines. The storage container has a storage space for accommodating the lamp by the bottom surface and the side wall, and a connector coupling portion coupled to the connector is formed at a predetermined position.

In addition, the display device for achieving the second object of the present invention includes a lamp unit, a storage container, an inverter and a display panel. The lamp unit includes a lamp, power supply lines for supplying power required to generate light from the lamp, and a first connector connected to an end of the power supply lines. The storage container has a storage space for accommodating the lamp by a bottom surface and a side wall, and a connector coupling portion coupled to the connector is formed at a predetermined position. The inverter includes a second connector connected to the first connector for providing power to power supply lines. The display panel is accommodated in the storage container and changes the light into image light including information.

The backlight assembly according to the present invention includes a lamp unit for generating light and a receiving container for storing the lamp unit.

The lamp unit according to the present invention includes a lamp for generating light, power supply lines for applying power to the lamp, and a connector connected to ends of the power supply lines.

The lamp includes, for example, a tube body including a discharge gas and a fluorescent layer, and electrodes disposed at both ends of the tube body.

The electrodes receive a driving voltage provided from an external voltage supply device, for example, an inverter, to generate a discharge inside the tube body. The discharge gas charged inside the tube body generates invisible light, for example, ultraviolet light, by the discharge, and the ultraviolet light is changed into visible light by the fluorescent layer formed on the inner wall of the tube body.

The power supply lines are electrically connected to the electrodes of the lamp to provide a driving voltage to the electrodes. The power supply lines include, for example, a first power supply line for applying a voltage of a first level and a second power supply line for applying a voltage of a second level lower than the voltage of the first level. The first power supply line is electrically connected to an electrode disposed at one end of the lamp to apply a first level of voltage to the tube body, and the second power supply line is electrically connected to an electrode disposed at the other end of the lamp. A second level of voltage is applied to the tube body.

The connector is electrically connected to ends of the first power supply line and the second power supply line. The connector is electrically connected to another connector electrically connected to the inverter to supply driving voltages to the first and second power supply lines.

The storage container includes a bottom surface and a side surface extending or disposed from an edge of the bottom surface to form a storage space. A connector coupling portion for fixing the connector is formed at a predetermined position of the storage container, and as a result, the connector is disposed inside the storage container or the storage container.

The backlight assembly according to the present invention may further include an optical member disposed on a movement path of light generated by the lamp to improve optical characteristics of the light. For example, the optical member may include a diffusion sheet for diffusing the light to improve luminance uniformity and at least one prism sheet for collecting the light diffused from the diffusion sheet to improve the front viewing angle and the brightness of the light.

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

Backlight assembly

Example  One

1 is a perspective view illustrating a backlight assembly according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line I1-I2 of FIG. 1.

1 and 2, the backlight assembly 100 according to the present exemplary embodiment includes a lamp unit 200 generating light and a storage container 300 accommodating the lamp unit 200.

The lamp unit 200 includes a lamp (not shown) for generating light, power supply lines 210 for applying power to the lamp, and a connector 220 connected to ends of the power supply lines 210.

The lamp according to the present embodiment may include, for example, a tube body including a discharge gas and a fluorescent layer and electrodes disposed at both ends of the tube body.

The electrodes of the lamp are supplied with a driving voltage provided from an external voltage supply device, for example, an inverter, to generate a discharge inside the tube body. In this embodiment, the electrodes of the lamp may be disposed inside the tube body or may be disposed outside the tube body.

The discharge gas charged inside the tube body generates invisible light, for example, ultraviolet rays, by discharge generated inside the tube body by the driving voltage applied from the electrodes of the lamp. Ultraviolet rays generated inside the tube body are converted into visible light by the fluorescent layer formed on the inner wall of the tube body and then emitted to the outside of the tube body.

The power applying lines 210 are electrically connected to the electrodes of the lamp to supply power to the electrodes of the lamp. The power supply lines 210 according to the present embodiment may include, for example, a first power supply line 212 for applying a voltage of a first level and a second level voltage for applying a voltage lower than a voltage of a first level. And a power supply line 214. The first power supply line 212 is electrically connected to an electrode disposed at one end of the tube body of the lamp to apply a voltage of a first level, and the second power supply line 214 is disposed at the other end of the lamp. It is electrically connected to the electrode to apply a second level of voltage to the tube body. In the present embodiment, the length of the first power applying line 212 is preferably shorter than the length of the second power applying line 214.

The connector 220 is electrically connected to power supply lines 210, for example, ends of the first power supply line 212 and the second power supply line 214. The connector 220 is electrically connected to an external power supply, for example, a connector electrically connected to an inverter to provide a driving voltage to the power applying lines 210. The connector 220 according to the present embodiment is preferably a female connector coupled with the connector of the inverter.

The storage container 300 accommodating the lamp unit 200 includes a bottom surface 310 and a side surface 320 extending or disposed from an edge of the bottom surface 310 to form a storage space. The connector coupling portion 322 coupled to the connector 220 is formed at a predetermined position of the storage container 300, and the connector coupling portion 322 according to the present embodiment is a through hole formed in the side wall 320 of the storage container. . In the present embodiment, the connector 220 is coupled to the connector coupling portion 322, for example, the connector 220 is disposed inside the storage container 300 so as not to protrude from the side wall of the storage container 300. .

The backlight assembly 100 according to the present invention may further include an optical member (not shown) disposed on the movement path of the light generated from the lamp to improve the optical characteristics of the light. For example, the optical member includes a diffusion sheet for diffusing light to improve luminance uniformity and at least one prism sheet for collecting the light diffused from the diffusion sheet to improve the front viewing angle and the brightness of the light.

Example  2

3 is a perspective view illustrating a backlight assembly according to a second embodiment of the present invention. Since the backlight assembly according to the second embodiment of the present invention has the same configuration as the backlight assembly of the first embodiment described above except for the connector coupling portion, duplicated description thereof will be omitted, and like reference numerals refer to the same components. And names will be used.

Referring to FIG. 3, a connector coupling part 312 coupled to the connector 220 is formed at a predetermined position of the storage container 300.

The connector coupling part 312 according to the present embodiment is a through hole formed in the bottom surface 310 of the storage container 300. In the present embodiment, the connector 220 is combined with the connector coupling portion 312 formed on the bottom surface 310 of the storage container 300 is disposed inside the storage container 300.

Display

Example  3

4 is an exploded perspective view illustrating a display device according to a third exemplary embodiment of the present invention. 5 is a perspective view partially cutaway of the display device of FIG. 4. FIG. 6 is a cross-sectional view taken along the line II1-II2 of FIG. 5.

4 to 6, the display device 1000 according to the present exemplary embodiment includes a lamp unit 500, a storage container 600, an inverter 700, and a display panel 800.

The lamp unit 500 includes a lamp 510 for generating light, power supply lines 520 for applying power to the lamp 510, and a first connector 530 connected to ends of the power supply lines 520. do.

The lamp 510 according to the present embodiment includes, for example, a tube body 512 having a rod shape and arranged in parallel, electrodes 514 and tubes disposed at both ends of each tube body 512, respectively. And a lamp fixing unit 516 coupled to the electrodes 514 of the body 512 to provide a driving voltage to the electrodes 514. Discharge gas is filled in each of the tube bodies 512, and a fluorescent layer is formed on an inner wall of the tube body 512.

The lamp fixing unit 516 is coupled to both ends of the tube body 512 to provide a driving voltage to each electrode 514 of the lamp 510, and the tube body 512 by the electrodes 514 provided with the driving voltage. Inside the cell), a discharge is generated. The discharge gas injected into the inside of the tube body 512 generates invisible light, for example, ultraviolet light, by the discharge, and the ultraviolet light is changed into visible light by the fluorescent layer formed on the inner wall of the tube body 512.

The power applying lines 520 are electrically connected to the lamp fixing unit 516 to supply a driving voltage to the lamp fixing unit 516. For example, the power supply lines 520 may include a first power supply line 522 for applying a voltage of a first level and a second power supply line for applying a voltage of a second level lower than the voltage of the first level. 524). The first power supply line 522 is electrically connected to the lamp fixing unit 516 disposed at one end of the tube body 512 to apply a first level of voltage to the tube body 512 and to apply the second power. The line 524 is electrically connected to the lamp fixing unit 516 disposed at the other end of the tube body 512 to apply a second level of voltage to the tube body 512. In the present embodiment, the length of the first power applying line 522 is preferably shorter than the length of the second power applying line 524.

The first connector 530 is electrically connected to power supply lines 520, for example, ends of the first power supply line 522 and the second power supply line 524.

The storage container 600 accommodating the lamp unit 500 includes a bottom surface 610 and sidewalls 620 extending or arranged from the bottom surface 610 to form a storage space. A connector coupling portion 622 coupled to the first connector 530 is formed at a predetermined position of the storage container 600, and the connector coupling portion 622 according to the present embodiment is formed through the sidewall 620 of the storage container. It's a ball. In the present embodiment, the first connector 530 is coupled to the connector coupling portion 622, whereby the first connector 530 is disposed inside the receiving container 600.

The inverter 700 for supplying power to the power applying lines 520 is an inverter body 710 for generating a driving voltage of the lamp 500, and the driving voltage is supplied to the power applying lines 520 of the lamp unit 500. And a second connector 730 connected to ends of the power transmission lines 720 for transmitting and the ends of the power transmission lines 720.

The inverter body 710 is electrically connected to ends of the power transmission lines 720 to provide a driving voltage to the power transmission lines 720. The power transmission lines 720 provided with the driving voltage transmit the driving voltage to the second connector 730. The second connector 730 is electrically connected to the first connector 530, and the second connector 730 provides a driving voltage to the first connector 530. In the present embodiment, the first connector 530 is a female connector that receives the second connector 730, and the second connector 730 is preferably a male connector that is received in the first connector 530.

The power transmission lines 720 include, for example, a first voltage transmission line 722 that transmits a first level of voltage and a second voltage transmission line 724 that transmits a second level of voltage lower than the voltage of the first level. do. The first voltage transmission line 722 is electrically connected to the first power supply line 522 by the first connector 530 and the second connector 730. The second voltage transmission line 724 is electrically connected to the second power supply line 524 by the first connector 530 and the second connector 730.

The display panel 800 accommodated in the storage container 600 changes the light into image light including information. The display panel 800 includes a first substrate 810 on which a thin film transistor (TFT), which is a switching element, is disposed, a second substrate 820 and a first substrate facing the first substrate 810. The liquid crystal layer 830 is interposed between the 810 and the second substrate 820.                     

A plurality of TFTs disposed on the first substrate 810 is disposed in a matrix form and includes a source electrode, a gate electrode, and a drain electrode. Data signal lines formed in parallel on the first substrate 810 are connected to the source electrode of each TFT, and gate signal lines formed in parallel on the first substrate 810 and intersected perpendicularly to the data signal lines are connected to the gate electrode. Connected. In addition, a plurality of pixel electrodes including a transparent conductive material may be connected to the drain electrodes of the TFTs on the first substrate 810 in a matrix form.

The second substrate 820 has a smaller area than the first substrate 810 and is disposed to face the first substrate 810. The second substrate 820 includes a common electrode including a transparent conductive material and a plurality of color filters disposed to face each pixel electrode formed on the first substrate 810.

The liquid crystal layer 830 interposed between the first substrate 810 and the second substrate 820 is formed by an electric field formed between the pixel electrode of the first substrate 810 and the common electrode of the second substrate 820. Rearranged. The rearranged liquid crystal layer 830 adjusts the light transmittance of the light generated by the lamp 510, and the light whose light transmittance is adjusted passes through the color filter to display an image.

The display panel 1000 according to the present embodiment is electrically connected to the first substrate 810 to provide a driving signal to the first substrate 810, the printed circuit board 840, the first substrate 810, and the printed circuit. A flexible circuit board 850 electrically connecting the substrate 840, for example, a tape carrier package (TCP), may be further included.

The display device 1000 according to the present exemplary embodiment may further include an optical member 900 disposed between the backlight assembly 500 and the display panel 800 to improve optical characteristics of light. For example, the optical member 900 may include a diffusion sheet 910 for diffusing light to improve luminance uniformity, and at least one prism sheet for condensing the light diffused from the diffusion sheet to improve the front viewing angle and luminance of the light ( 920).

As described in detail above, the connector for supplying power to the lamp is combined with the connector coupling portion and disposed inside the storage container, thereby preventing the wire connected to the connector from being disconnected, and as a result, the lamp displays stable light. It is provided by the panel to improve the image display quality of the display device.

In the detailed description of the present invention described above with reference to the preferred embodiments of the present invention, those skilled in the art or those skilled in the art having ordinary skill in the art will be described in the claims to be described later It will be understood that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

Claims (9)

A lamp unit including a lamp, power supply wires connected to the lamp to provide power required to generate light from the lamp, and a connector connected to an end of the power supply wires; And And a storage container for accommodating the lamp by a bottom surface and a side wall, and a storage container having a connector coupling portion coupled to the connector at predetermined positions of the bottom surface and the side wall. The backlight assembly of claim 1, wherein the connector coupling portion is formed in the sidewall and is a through hole coupled to the connector. The backlight assembly of claim 1, wherein the connector coupling portion is formed in the bottom surface and is a through hole coupled to the connector. The backlight assembly of claim 1, wherein the connector is disposed inside the receiving container. The backlight assembly of claim 1, wherein the housing further comprises an optical member for improving optical characteristics of light generated from the lamp. A lamp unit including a lamp, power supply wires connected to the lamp to provide power required to generate light from the lamp, and a first connector connected to an end of the power supply wires; An accommodating space for accommodating the lamp by a bottom surface and a side wall, the accommodating container having a connector coupling part coupled to the connector at a predetermined position; An inverter including a second connector connected to the first connector to provide the power to the power applying lines; And And a display panel accommodated in the storage container and configured to change the light into image light including information. The backlight assembly of claim 6, wherein the connector coupling part is formed in the side wall and is a through hole coupled to the first connector. The backlight assembly of claim 6, wherein the connector coupling portion is formed in the bottom surface and is a through hole coupled to the first connector. The backlight assembly of claim 6, wherein the first connector is disposed inside the receiving container.

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