KR20060013261A - Lamp and display apparatus having the lamp - Google Patents

Abstract

A lamp and a display device having the same are disclosed. The lamp includes a lamp body, a first electrode, a second electrode and a conductive pattern. The lamp body is filled with a discharge gas therein, and a fluorescent layer is formed on the inner wall. The first electrode is disposed at a predetermined position of the lamp body, and the second electrode is disposed at a predetermined position of the lamp body so as to be spaced apart from the first electrode by a predetermined distance. The conductive pattern is electrically connected to the second electrode and is formed along the outer surface of the lamp body. As described above, power may be supplied to the lamp through the connection electrode and the conductive pattern, thereby reducing the failure of the lamp wire being disconnected.

Description

Lamp and display device having same {LAMP AND DISPLAY APPARATUS HAVING THE LAMP}

1 is a perspective view showing a lamp according to a first embodiment of the present invention.

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

3 is a cross-sectional view taken along the line II1-II2 of FIG. 1.

4 is a perspective view showing a lamp according to a second embodiment of the present invention.

5 is a perspective view showing a lamp according to a third embodiment of the present invention.

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

7 is a perspective view showing a lamp according to a fourth embodiment of the present invention.

8 is a perspective view illustrating a display device according to a fifth exemplary embodiment of the present invention.

9 is an enlarged view of a portion 'A' of FIG. 8.

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

100: lamp 200: lamp body

300,340: first electrode 400: second electrode

450: conductive pattern 500, 510: connecting electrode

1000: display device 700: display panel

800: backlight assembly 900: storage container

950: top chassis

The present invention relates to a lamp and a display device having the same. More specifically, the present invention relates to a lamp and a display device having the same, which prevents a malfunction due to disconnection of a signal line providing power.

In general, various electronic devices such as a mobile communication terminal, a digital camera, a notebook, a monitor, and the like include a display device for displaying an image in response to an image signal input from an external source.

There are various types of display devices, such as cathode-ray tubes, liquid crystal displays, plasma display panels, field emission displays, and electroluminescence. There is an electroluminescence device.

Among them, a liquid crystal display displays an image by using optical characteristics of a liquid crystal. The liquid crystal display device is thinner and lighter than other display devices, and has advantages of low power consumption and low driving voltage.

Conventional liquid crystal displays include a display panel for displaying an image using light and a back-light assembly for providing light to the display panel.                         

The backlight assembly includes a lamp for generating light, a lamp cover surrounding a portion of the lamp to collect and emit light generated from the lamp, and an inverter for supplying power to the lamp.

The lamp includes a lamp body, electrodes in which a pair is disposed on the lamp body and provided with power applied from an inverter, and lamp wires electrically connected to the electrodes, respectively.

A discharge is generated between the electrodes in order to generate light from the lamp, and to realize this, one of the electrodes is applied with a high voltage sufficient to generate a discharge between the electrodes, and the other electrode is grounded.

In general, since the heat is generated at the electrode to which the high voltage is applied, the electrode to which the high voltage is applied is called a "hot electrode," and the "ground electrode" is called a "cold electrode" because heat is not generated. It is called. A power supply line is electrically connected to the hot electrode and the cold electrode, respectively. The power supply line connected to the hot electrode is called "Hot Wire", and the power supply line connected to the cold electrode is called "Cold Wire". The hot wire and the cold wire are gathered in one place and connected to the connector. In this case, the length of the cold wire is formed longer than the length of the hot wire in consideration of the high voltage applied to the hot wire.

However, in the case of the conventional lamp, when assembling and replacing the lamp, a relatively long cold wire is caught on the lamp cover, there is a problem that frequent electrical disconnection occurs.

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 lamp which prevents disconnection of a lamp wire.

Further, a second object of the present invention is to provide a display device having the lamp.

The lamp for achieving the first object of the present invention includes a lamp body, a first electrode, a second electrode and a conductive pattern. The lamp body is filled with a discharge gas therein, and a fluorescent layer is formed on the inner wall. The first electrode is disposed at a predetermined position of the lamp body, and the second electrode is disposed at a predetermined position of the lamp body so as to be spaced apart from the first electrode by a predetermined distance. The conductive pattern is electrically connected to the second electrode and is formed along the outer surface of the lamp body.

In addition, the display device for achieving the second object of the present invention includes a lamp, a display panel and a storage container. The lamp may include a lamp body in which a discharge gas is filled therein and a fluorescent layer is formed on an inner wall thereof, a first electrode disposed at a predetermined position of the lamp body, and a lamp disposed at a predetermined position of the lamp body so as to be spaced apart from the first electrode. And a second electrode, a conductive pattern electrically connected to the second electrode, and a conductive electrode formed along the outer surface of the lamp body and electrically connected to the conductive pattern and disposed on the lamp body. The display panel changes the light generated by the lamp into image light including information, and the storage container houses the lamp and the display panel.

According to the present invention, by forming a conductive pattern on the lamp body, by connecting the lamp wire to the conductive pattern to reduce the defect of the lamp generated when assembling and replacing the lamp and to further improve the display quality of the image generated from the display device Has the advantage.

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

lamp

Example  One

1 is a perspective view showing a lamp 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 cross-sectional view taken along the line II1-II2 of FIG. 1.

1 to 3, the lamp 100 includes a lamp body 200, a first electrode 300, a second electrode 400, and a conductive pattern 450.

The lamp body 200 has, for example, a cylindrical shape having a space formed therein. In the space of the lamp body 200, the discharge gas 210, for example, mercury (Hg), trace amounts of argon (Argon, Ar), neon (Neon, Ne), xenon (Xenon, Xe) and krypton ( Krypton, Kr) and the like.

Mercury (Hg) generates ultraviolet rays which are invisible rays by discharge. Argon (Ar), neon (Ne), xenon (Xe) and krypton (Kr) are ionized by discharge to generate secondary electrons, increasing the amount of ultraviolet rays generated, and the discharge voltage required to cause discharge by the penning effect. Decreases the level of power consumption.

A fluorescent layer 220 is formed on an inner wall of the lamp body 200, and the fluorescent layer 220 converts invisible light generated from mercury into visible light.

The first electrode 300 is disposed at a predetermined position of the lamp body 200. The first electrode 300 according to the present embodiment is disposed in, for example, one end 230 of the lamp body 200.

The first electrode 300 according to the present exemplary embodiment includes a first electrode body 310 that emits electrons to cause a discharge, a first lead 320 electrically connected to the first electrode body 310 and having a rod shape; The first sealing glass 330 is coupled to the first lead 320 to seal the discharge gas 210. The first signal line 350 to which the first voltage is applied is connected to an end portion of the first lead 320 by, for example, soldering or the like.

The second electrode 400 formed to be spaced apart from the first electrode 300 by a predetermined distance is disposed at a predetermined position of the lamp body 200.

The second electrode 400 according to the present embodiment is disposed inside the other end 240 facing the one end 230 of the lamp body 200.

The second electrode 400 includes a second electrode body 410 that receives electrons emitted from the first electrode, a second lead 420 and a second rod that are electrically connected to the second electrode body 410 and have a rod shape. The second sealing glass 430 is coupled to the lead 420 and seals the discharge gas 210. The second lead 430 is electrically connected to the conductive pattern 450.

The conductive pattern 450 is formed in the form of a thin film on the surface of the lamp body 200 and is electrically connected to the second lead 420. The conductive pattern 450 according to the present embodiment may be formed by, for example, a conductive tape electrically connected to the second lead 420 or a method such as chemical vapor deposition (CVD) or sputtering. It is a conductive thin film. At the end of the conductive pattern 450, a second signal line 460 to which a second voltage lower than the first voltage is applied is electrically connected, for example, by soldering or the like.

Example  2

4 is a perspective view showing a lamp according to a second embodiment of the present invention. Except for the connecting electrode, the lamp according to the second embodiment of the present invention has the same configuration as the lamp of the first embodiment described above, so that duplicate description thereof will be omitted, and the same reference numerals and names for the same components. Let's use.

Referring to FIG. 4, the lamp body 200 further includes a connection electrode 500. The connection electrode 500 according to the present embodiment is preferably electrically connected to the end of the conductive pattern 450.

The connection electrode 500 according to the present embodiment may have, for example, a ring shape fitted to an outer circumferential surface of the lamp body 200. In the present embodiment, the second signal line 460 is electrically connected to the connection electrode 500 by, for example, soldering or the like.

In order to smoothly discharge between the first electrode 300 and the second electrode 400, the connection electrode 500 and the conductive pattern 450 according to the present embodiment may have an electrical resistance of the second electrode 400. It is desirable to have a somewhat higher electrical resistance.

Example 3

5 is a perspective view showing a lamp according to a third embodiment of the present invention. FIG. 6 is a cross-sectional view taken along line III1-III2 of FIG. 4. Except for the first electrode, the lamp according to the third embodiment of the present invention has the same configuration as the lamp of the second embodiment described above, and thus the duplicated description thereof will be omitted, and like reference numerals refer to like elements. Let's use the name.

5 and 6, the first electrode 340 is disposed at a predetermined position of the lamp body 200. The first electrode 340 according to the present exemplary embodiment is an external electrode disposed at one end 230 of the lamp body 200 and surrounding the outside of the lamp body 200. The first electrode 340 is coupled to the lamp body 200 by, for example, soldering or conductive clips, and the first electrode 340 is electrically connected to the first signal line 350 to which the first voltage is applied. do.

As in the present exemplary embodiment, the first electrode 310 and the second electrode 400 are disposed outside the lamp body 200, and the second electrode 400 is disposed inside the lamp body 200. The discharge voltage for causing the discharge between the electrodes 400 can be further reduced.

Example  4

7 is a perspective view showing a lamp according to a fourth embodiment of the present invention. Except for the connecting electrode, the lamp according to the fourth embodiment of the present invention has the same configuration as the lamp of the second embodiment described above, and thus the duplicated description thereof will be omitted, and the same reference numerals and names are used for the same components. Let's use.

Referring to FIG. 7, the connection electrode 510 is electrically connected to the conductive pattern 450 and is disposed between the first electrode 300 and the second electrode 400. The connection electrode 510 is disposed on the lamp body 200.

In the connection electrode 510 according to the present exemplary embodiment, a separate member connected to the conductive pattern 450 may be used, or the conductive pattern 450 may be formed together while the conductive pattern 440 is formed.

Specifically, the connection electrode 510 according to the present embodiment has a piece piece attached to the outer circumferential surface of the lamp body 200. By forming the connecting electrode 500 in the shape of a piece, it is possible to further reduce the area in which light emitted from the outer circumferential surface of the lamp body 200 is blocked. The connecting electrode 510 having a piece shape is electrically connected to the second signal line 450.

In order to smoothly discharge between the first electrode 300 and the second electrode 400, the connection electrode 510 and the conductive pattern 450 according to the present exemplary embodiment may have an electrical resistance of the second electrode 400. It is desirable to have a somewhat higher electrical resistance.

Display

Example  5

8 is a perspective view illustrating a display device according to a fifth exemplary embodiment of the present invention. 9 is an enlarged view of a portion 'A' of FIG. 8. Since the lamp of the display device according to the fifth embodiment of the present invention has the same configuration as the lamp of the second embodiment described above, duplicate description thereof will be omitted, and the same reference numerals and names are used for the same components. Shall be.

8 and 9, the display device 1000 according to the present exemplary embodiment includes a backlight assembly 700, a display panel assembly 800, and a storage container 900.

The backlight assembly 700 according to the present exemplary embodiment includes a lamp 100, a lamp cover 710, a light guide plate 720, an inverter 730, a reflector plate 740, and an optical member 750.

The lamp cover 710 surrounds a part of the lamp 100 to emit light generated from the lamp 100 to the light guide plate 720 which will be described later.

The light guide plate 720 is coupled to the lamp cover 710 and receives the light from the lamp 100 to change the optical distribution of the light incident on the light guide plate 720 and the direction of the light.

The inverter 730 is electrically connected to the first lead 320 through the first signal line 350 to apply a first voltage to the first electrode 300, and the connection electrode 500 through the second signal line 460. ) Is electrically connected to the second electrode to apply a second voltage lower than the first voltage to the second electrode 400. At this time, it is preferable that the first voltage and the second voltage have a voltage difference sufficient to cause a discharge between the first electrode 300 and the second electrode portion 410.

The reflective plate 740 is disposed under the light guide plate 720 so that light leaked from the light guide plate 720 is incident again into the light guide plate 720.

The optical member 750 diffuses the light emitted from the light guide plate 720 to change the distribution of light, and a diffusion sheet 752 and at least one prism sheet 754 for condensing the diffused light to improve the front viewing angle and brightness of the light It includes. In addition, the optical member 750 may further include a dual brightness enhanced film (DBEF; not shown).

The display panel assembly 800 includes a display panel 810, a printed circuit board 820, and a tape carrier package 830.

The display panel 810 includes a TFT substrate 812, a color filter substrate 814, and a liquid crystal layer 816, and converts light emitted from the backlight assembly 700 into image light.

The TFT substrate 812 includes a plurality of transparent and conductive pixel electrodes, a thin film transistor (TFT) for applying a driving voltage to the pixel electrode, and a data signal line for operating the thin film transistor (TFT). Signal Lines and Gate Signal Lines.

The color filter substrate 814 is disposed to face the TFT substrate 812. The color filter substrate 814 is disposed on a surface facing the pixel electrode and is a transparent and conductive common electrode and a color filter disposed to face each pixel electrode, for example, a red color filter, a green color filter, and And a blue color filter.

The liquid crystal layer 816 is interposed between the TFT substrate 812 and the color filter substrate 814, and is formed by an electric field difference formed between the pixel electrode of the TFT substrate 812 and the common electrode of the color filter substrate 814. Rearranged. The rearranged liquid crystal layer 816 adjusts the light transmittance of light generated from the lamp 100 of the backlight assembly 700, and the light whose light transmittance is adjusted passes through the color filter to display an image.

The printed circuit board 820 electrically connected to the display panel 810 receives an image signal from an external graphic card (not shown), converts the image signal into a driving signal necessary for displaying an image, and applies the image signal to the display panel 810.

The tape carrier package 830 electrically connecting the display panel 810 and the printed circuit board 820 may include a source tape carrier package 832 connected to a data signal line of the TFT substrate 812 and a gate signal line of the TFT substrate 812. And a gate tape carrier package 834 connected to it. The source tape carrier package 834 transfers a driving signal from the printed circuit board 320 to the TFT substrate 812 of the display panel 810.

The storage container 900 disposed below the backlight assembly 700 includes a bottom surface 910 having an opening and sidewalls 920 extending or disposed from the bottom surface 910. A storage space is formed in the storage container 200 by the bottom surface 210 and the side walls 220, and the backlight assembly 700 and the display panel assembly 800 are accommodated in the storage space. For example, the bottom surface 910 of the storage container 900 according to the present embodiment is formed in the bottom surface 910 to provide a movement path of the first signal line 350 and the second signal line 460 by the opening. .

The display device 1000 according to the present exemplary embodiment may further include a top chassis 950 coupled to the sidewall 920 of the storage container 900 to fix an edge of the display panel 810.

As described in detail above, by changing the method of applying power to the lamp, it is possible to reduce the malfunction of the lamp caused by the interruption of the power supply of the lamp generated when the lamp is assembled and replaced, and to improve the image display quality of the display device. You can.

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 (10)

A lamp body filled with a discharge gas therein and having a fluorescent layer formed on an inner wall thereof; A first electrode disposed at a predetermined position of the lamp body; A second electrode disposed at a predetermined position of the lamp body to be spaced apart from the first electrode at a predetermined distance; And And a conductive pattern electrically connected to the second electrode and formed along an outer surface of the lamp body. The lamp of claim 1, wherein the first electrode and the second electrode are disposed inside the lamp body. The lamp of claim 1, wherein the first electrode is disposed outside the lamp body, and the second electrode is disposed inside the lamp body. The lamp of claim 1, further comprising a connection electrode electrically connected to the conductive pattern on an outer surface of the lamp body. The lamp of claim 4, wherein the connection electrode has a ring shape coupled to an outer circumferential surface of the lamp body to be electrically connected to the conductive pattern. The lamp of claim 4, wherein the connection electrode has a piece piece attached to an outer circumferential surface of the lamp body to be electrically connected to the conductive pattern. The lamp of claim 1, wherein a first voltage is applied to the first electrode, and a second voltage lower than the first voltage is applied to the conductive pattern. The lamp of claim 4, wherein an electrical resistance of the second electrode is lower than that of the connection electrode. A lamp body filled with a discharge gas therein and a fluorescent layer formed on an inner wall, a first electrode disposed at a predetermined position of the lamp body, and disposed at a predetermined position of the lamp body so as to be spaced apart from the first electrode by a predetermined distance. A second electrode, a lamp electrically connected to the second electrode, a conductive pattern formed along an outer surface of the lamp body, and a connection electrode electrically connected to the conductive pattern and disposed on the lamp body; A display panel configured to change the light generated by the lamp into image light including information; And And a storage container accommodating the lamp and the display panel. 10. The display device according to claim 9, wherein a light guide plate and optical sheets are disposed on a path through which light generated by the lamp passes.

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