KR100931682B1 - Lamp assembly and liquid crystal display having the same - Google Patents

Abstract

Disclosed are a lamp assembly which prevents detachment of an external electrode and reduces a width of an edge portion of a liquid crystal display device on which a screen is not displayed, and a liquid crystal display device having the same. The external electrode lamps are connected in parallel to fix the contact portion of the external electrodes in the voltage distribution board for supplying the discharge voltage and fixing the external electrode lamps, thereby preventing the flow and departure of the external electrode lamps. Therefore, the voltage distribution board is placed upright to reduce the width of the edge portion of the liquid crystal display device on which the screen is not displayed. As a result, the display quality of the screen and the appearance quality and reliability of the liquid crystal display device can be improved.

Description

Lamp assembly and liquid crystal display having the same {LAMP ASSEMBLY AND LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME}

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

2 is a perspective view of a lamp assembly according to a second embodiment of the present invention.

3 is an exploded perspective view of the lamp assembly shown in FIG. 2.

4 is a perspective view illustrating the first voltage distribution substrate and the second voltage distribution substrate of FIG. 2 upside down.

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

FIG. 6 is an exploded perspective view of the lamp assembly shown in FIG. 5.

FIG. 7 is an exploded perspective view illustrating the first voltage distribution substrate and the second voltage distribution substrate shown in FIG. 5 lying down.

8 is a perspective view specifically showing a liquid crystal display device according to a fourth embodiment of the present invention.

9 is a perspective view specifically showing a liquid crystal display device according to a fifth embodiment of the present invention.

10 is a perspective view specifically showing a liquid crystal display according to a sixth embodiment of the present invention.

The present invention relates to a lamp assembly and a liquid crystal display device having the same, and more particularly, to a lamp assembly and a liquid crystal display device having the same that can prevent the departure of the lamp, improve the appearance and display quality.

In general, a liquid crystal display device is a display device that displays information by liquid crystal.

The liquid crystal display device has an advantage of smaller volume and weight than other display devices. In addition, the liquid crystal display device has a display quality comparable to or superior to that of other display devices, and thus the liquid crystal display device is widely used as a display device of most information processing devices.

Since the liquid crystal used in such a liquid crystal display device does not generate light by itself and only adjusts the light transmittance, the liquid crystal display device requires light in order to perform a display. As a result, a normal liquid crystal display device is provided with a backlight assembly that provides light for display. The backlight assembly includes a lamp for generating light and optical devices for improving the brightness and uniformity of the light.

In the case of a small liquid crystal display, only one or two lamps can display a high brightness display. However, recently developed large liquid crystal displays have several to several dozen lamps arranged in a row on the lower surface of the optical devices to perform a high brightness display.

When a plurality of lamps are installed on the lower surface of the optical devices, the light emitted from each lamp should reach the display area of the liquid crystal display directly, so that the brightness of the light emitted from each lamp should be almost the same. If the brightness of the light is higher than the other lamps due to the good lamp performance among the plurality of lamps, the display area corresponding to the high-performance lamps appears bright, whereas the display area corresponding to the low-performance lamps is dark. Because of this, the display quality of the screen is reduced.

For this reason, in recent years, external electrode lamps having an external electrode installed are used, and external electrode lamps are connected in parallel so that the brightness of light emitted from all lamps is the same regardless of the performance of each lamp.

When the plurality of external electrode lamps are installed on the lower surface of the optical device, a lamp fixing part for fixing the external electrode lamps to the bottom chassis and connecting the external electrode lamps in parallel is further required.

The lamp fixing portion is composed of a base substrate and a plurality of lamp clips. The base substrate is fixed to the bottom surface of the bottom chassis and provides a driving voltage to the external electrode lamps. The lamp clips protrude from the base substrate toward the optical device and not only fix the respective external electrode lamps, but also receive a driving voltage from the base substrate and apply them to each external electrode lamp. The lamp clip is formed in a cylindrical shape having a predetermined curvature so as to surround the external electrode, and both sides facing the end of the external electrode lamp and the surface facing the optical device are opened so that the external electrode lamp can be inserted into the lamp clip. .

As described above, since both sides of the lamp clip are opened, when the external electrode lamp flows due to an external shock, the external electrode leaves the lamp clip and the external electrode lamp is turned off or enters the inside of the display area. Has a problem of lowering the display quality.

In addition, since the performance of the external electrode lamp is improved as the area where the lamp clip contacts the external electrode increases, the lamp clip is formed as long as possible. As a result, the width of the edge portion of the liquid crystal display device surrounding the display area except the display area, that is, the area where the image is not displayed, is increased, thereby degrading the appearance quality.

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 assembly which improves display quality and appearance quality of an image.

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

In order to achieve the first object of the present invention, a lamp assembly according to the present invention includes a lamp body in which a fluorescent layer is applied to an inner wall and a discharge gas is injected, a first external electrode and a lamp covering a surface of a first end of the lamp body. At least two or more external electrode lamps each including a second external electrode surrounding the surface of the second end of the body, the first external electrode is inserted and connected in parallel, applying a first discharge voltage to each first external electrode The first voltage distribution board and the second external electrode which prevent the separation of the first external electrodes are inserted and connected in parallel, apply a second discharge voltage to each of the second external electrodes, and prevent the separation of the second external electrodes. A lamp assembly comprising a second voltage distribution substrate is provided.

In addition, in order to implement the second object of the present invention, the liquid crystal display according to the present invention includes a lamp body, a first external electrode surrounding the first end of the lamp body, and a second external electrode surrounding the second end of the lamp body, respectively. At least two external electrode lamps including, the first external electrode is inserted in parallel and connected, the first voltage distribution substrate and the second external electrode for preventing the separation of the first external electrodes are inserted in parallel and connected in a second, Provided is a liquid crystal display including a lamp assembly including a second voltage distribution substrate for preventing separation of electrodes, and a liquid crystal display panel for converting light generated from the lamp assembly into image light including information.

According to the present invention, since the portions facing the external electrodes of the first voltage distribution substrate and the second voltage distribution substrate are closed, the external electrode lamps may be connected to the first and second voltage distribution substrates even when severe external shocks or vibrations are applied. Since it does not deviate, the display quality of the screen can be improved. In addition, the appearance quality can be improved by narrowing the width of the first and second voltage distribution substrates to reduce the width of the edge portion of the liquid crystal display device surrounding the area where the image is not displayed.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

Embodiments of the Lamp Assembly

First embodiment

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

Referring to FIG. 1, the lamp assembly 200 includes an external electrode lamp 210, a first voltage distribution board 220, a second voltage distribution board 230, and an inverter 240.

At least two external electrode lamps 210 are used, and each of the external electrode lamps 210 extends in the first direction and is arranged in parallel to each other along the second direction. Each external electrode lamp 210 includes a lamp body 211, a first external electrode 213, and a second external electrode 215.

The lamp body 211 is formed in a tube shape with high light transmittance, the fluorescent layer 211a is applied to the inner wall of the lamp body 211, the discharge gas (211b) inside the lamp body 211 at a specified pressure Is injected.

The discharge gas dissociates into discharge gas atoms, neutrons and electrons by discharge, and generates non-visible gas. The fluorescent layer 211a coated with a thin thickness on the inner wall of the lamp body 211 converts invisible light into visible light.

The first external electrode 213 and the second external electrode 215 are applied with a discharge voltage from the inverter 240 to generate a discharge for dissociating the discharge gas injected into the lamp body 211. The first external electrode 213 surrounds the surface of one end of the lamp body 211, and the second external electrode 215 surrounds the surface of the other end of the lamp body 211. The first external electrode 213 and the second external electrode 215 are formed of a conductor. In the present embodiment, the first external electrode 213 and the second external electrode 215 are made of metal.

The first voltage distribution substrate 220 and the second voltage distribution substrate 230 are formed of a conductor. In the present embodiment, the first voltage distribution substrate 220 and the second voltage distribution substrate 230 are made of metal. The first voltage distribution substrate 220 and the second voltage distribution substrate 230 fix both ends of the external electrode lamps 210.

The first voltage distribution substrate 220 is coupled to the first external electrode 213 disposed at one end of the external electrode lamp 210, and the second voltage distribution substrate 230 is the other end of the external electrode lamp 210. It is coupled to the second external electrode 215 disposed in the.

The first voltage distribution substrate 220 includes a first base substrate 222, a first lamp clip 224, a first escape preventing piece 226, and a first connector 228.

The first base substrate 222 is disposed in the first direction. The width of the first base substrate 222 is slightly wider than the length of the first external electrode 213.

The first external electrode 213 is fitted to the first lamp clip 224 to be fixed. The first lamp clip 224 transfers the first discharge voltage transmitted through the first base substrate 222 to the first external electrode 213. In addition, the first lamp clip 224 prevents the external electrode lamp 210 from being separated in the second direction and the third direction. The number of first lamp clips 224 formed on the first base substrate 222 is equal to or greater than the number of external electrode lamps 210.                     

The first separation preventing piece 226 prevents the first external electrode 213 from being separated from the first lamp clip 224 in the first direction by vibration or shock applied from the outside. The first separation preventing piece 226 is formed on the first base substrate 222. The first separation preventing piece 226 is formed in parallel with the third direction from the first base substrate 222. The first separation preventing piece 226 is formed at a position facing one side facing the first external electrode 213 fixed to the first lamp clip 224.

The first connector 228 is formed on the first base substrate 222 to electrically connect the first voltage distribution board 220 and the inverter 240, and is coupled to the first terminal 246 connected to the inverter 240. And the first discharge voltage is applied.

The second voltage distribution substrate 230 is coupled to the other end of the lamp body 211 of the external electrode lamp 210 provided with the second external electrode 215. The second voltage distribution board 230 includes a second base board 232, a second lamp clip 234, a second escape preventing piece 236, and a second connector 238.

The width and length of the second base substrate 232 are the same as that of the first base substrate 222.

The second lamp clip 234 is made of a conductor, for example, metal, and fixes the second external electrode 215. The second lamp clip 234 prevents the second external electrode 215 from being separated in the second direction and the third direction, and transmits the second discharge voltage transferred through the second base substrate 232 to the second external electrode. Forward to 215. The number of second lamp clips 234 formed on the second base substrate 232 is the same as the number of first lamp clips 224 formed on the first base substrate 222. Since the shape of the second lamp clip 234 is the same as the shape of the first lamp clip 224, a detailed description thereof will be omitted.

The second release preventing piece 236 prevents the second external electrode 215 from being separated from the second lamp clip 234 in the first direction by vibration and shock applied from the outside. The second separation preventing piece 236 is formed in parallel with the third direction from the second base substrate 232 and is disposed at a position facing the end of the second external electrode 215.

The second connector 238 is formed on the second base substrate 232 to electrically connect the second voltage distribution board 230 and the inverter 240, and is coupled to the second terminal 248 of the inverter 240. A second discharge voltage is applied.

The inverter 240 generates a first discharge voltage applied to the first external electrode 213 and a second discharge voltage to be applied to the second external electrode 215, and the first connector 228 and the second connector 238. ) The inverter 240 includes a first discharge voltage application line 242, a second discharge voltage application line 244, a first terminal 246, and a second terminal 248.

The first discharge voltage application line 242 connects the inverter 240 and the first terminal 246 to apply the first discharge voltage generated by the inverter 240 to the first terminal 246. As described above, the first terminal 246 is connected to the first connector 228 to supply the first discharge voltage to the first connector 228.

The second discharge voltage application line 244 connects the inverter 240 and the second terminal 248 to apply the second discharge voltage generated by the inverter 240 to the second terminal 248. As described above, the second terminal 248 is connected to the second connector 238 to supply the second discharge voltage to the second connector 238.

As in the present embodiment, when the voltage distribution board is formed of a conductor, and fixed at both ends of the external electrode lamp wrapped by the external electrode to each lamp clip, the plurality of external electrode lamps are connected in parallel to be identical in all the external electrode lamps. Since light of brightness is emitted and the contact area between the external electrode and the lamp clip is wide, the performance of the external electrode lamp is improved, and thus the display quality of the screen may be improved. In addition, when the separation prevention piece is formed in a portion corresponding to one side of each lamp clip of the voltage distribution board according to the present embodiment, the external electrode lamp cannot be released from the lamp clip even when a severe shock or vibration is applied. Can be turned off or prevented from entering the display area.

Example 2

2 is a perspective view of a lamp assembly according to a second embodiment of the present invention.

Referring to FIG. 2, the lamp assembly 700 includes an external electrode lamp 710, a first voltage distribution board 720, a second voltage distribution board 740, and an inverter 760.

Since the configuration of the external electrode lamp 710 is the same as that described in Embodiment 1, a detailed description thereof will be omitted. Reference numeral 711 is assigned to the lamp body, reference numeral 713 is assigned to the first external electrode, and reference numeral 715 is assigned to the second external electrode.

The first voltage distribution substrate 720 and the second voltage distribution substrate 740 fix both ends of the external electrode lamps 710, and connect the external electrode lamps 710 in parallel to discharge applied from the inverter 760. A voltage is supplied to each external electrode lamp 710.

3 is an exploded perspective view of the lamp assembly shown in FIG. 2. 4 is a perspective view illustrating the first voltage distribution substrate and the second voltage distribution substrate of FIG. 2 upside down.

2 to 4, the first voltage distribution substrate 720 is disposed at one end of the external electrode lamp 710 surrounded by the first external electrode 713. The first voltage distribution board 720 includes a first base board 721, a first lamp holder 730, and a first connector 735.

Referring to FIG. 4, the first base substrate 721 is a printed circuit board in a preferred embodiment. The length of the first base substrate 721 is determined according to the number of external electrode lamps 710, and the width of the first base substrate 721 is formed to be equal to the width of the first lamp holder 730. The first conductive pattern 723 and the first coupling hole 725 are formed in the first base substrate 721.

The first conductive pattern 723 extends along the second direction, which is a longitudinal direction of the first base substrate 721.

The first coupling hole 725 is a hole connected to the first conductive pattern 123. The pair of first coupling holes 725 are connected by the first conductive pattern 723, and the separation distance of the first coupling holes 725 is formed corresponding to the size of the first lamp holder 730.

Referring to FIG. 3 again, the first lamp holder 730 is mounted on the first base substrate 721 and electrically connected to the first base substrate 721. The first lamp holder 730 is formed of a metal material through which electricity flows, and is manufactured in a quadrangular shape. A pair of leads 731 and an electrode insertion groove 732 are formed in the first lamp holder 730. Alternatively, a thin insulator (not shown) may be formed on the surface of the first lamp holder 730 except for the electrode insertion groove 732 and the lead 731.

The pair of leads 731 are formed at portions corresponding to the pair of first coupling holes 725 among the lower surfaces of the first lamp holder 730 facing the first base substrate 721. The lead 731 is inserted into the first coupling hole 725 to electrically connect the first base substrate 721 and the first lamp holder 730.

The electrode insertion groove 732 is formed in a circular shape on the surface of the first lamp holder 730 facing the first external electrode 713. Contact protrusions 734 are formed on the inner surface of the electrode insertion groove 732. According to the present embodiment, three contact protrusions 734 are formed in the electrode insertion groove 732 at intervals of 120 °. The contact protrusion 743 is elastic so that when the first external electrode 713 is fitted into the electrode insertion groove 732, the contact protrusion 743 is relaxed in the direction of the arrow so that the first external electrode 713 does not fall out of the first lamp holder 730. In addition to fixing, the first discharge voltage transmitted from the inverter 760 through the first conductive pattern 723 is applied to the first external electrode 713.

Here, the first conductive pattern 723 and the lead 731 are electrically connected by solder.

The first connector 735 is mounted on the first base substrate 721 and is electrically connected to the first conductive pattern 723. The first connector 735 is coupled to the first terminal 766 of the inverter 760, which will be described later, to receive a first discharge voltage.                     

2 to 4, the second voltage distribution board 740 includes a second base board 741, a second lamp holder 750, and a second connector 746.

Referring to FIG. 4, the second base substrate 741 is a printed circuit board in a preferred embodiment. The length and width of the second base substrate 741 are the same as the first base substrate 721. A second conductive pattern 743 and a second coupling hole 745 are formed in the second base substrate 741.

The second conductive pattern 743 extends along the second direction, which is a length direction of the second base substrate 741, and is second outside of the external electrode lamps 710 fixed to the second voltage distribution substrate 740. The electrodes 715 are connected in parallel.

The second coupling hole 745 is a hole formed in the second conductive pattern 743. The pair of second coupling holes 745 is formed corresponding to the position where the second lamp holder 750 is to be connected among the second conductive patterns 743. The number of second coupling holes 745 is the same as the number of first coupling holes 725 formed in the first base substrate 721.

The second lamp holder 750 is mounted on the second base substrate 741 and is electrically connected to the second conductive pattern 743 of the second base substrate 741. Since the second lamp holder 750 has the same configuration as the first lamp holder 730 described above, duplicate description thereof will be omitted.

The inverter 760 generates a first discharge voltage to be applied to the first external electrode 713 and a second discharge voltage to be applied to the second external electrode 715, and the first connector 735 and the second connector 746. )                     

2, a first discharge voltage application line 762, a second discharge voltage application line 764, a first terminal 766, and a second terminal 768 are connected to the inverter 760.

The first discharge voltage application line 762 connects the inverter 760 and the first terminal 766 to apply the first discharge voltage generated by the inverter 760 to the first terminal 766. As described above, the first terminal 766 is connected to the first connector 735 to supply the first discharge voltage to the first connector 735.

The second discharge voltage application line 764 connects the inverter 760 and the second terminal 768 to apply the second discharge voltage generated by the inverter 760 to the second terminal 768. The second terminal 768 is connected to the second connector 746 as described above to supply a second discharge voltage to the second connector 746.

According to the present embodiment, the lamp assembly is fixed to the external electrode lamp by using the lamp holder, so that the external electrode lamp is not separated from the lamp holder even if a heavy shock or vibration is applied from the outside. Therefore, it is possible to prevent the external electrode lamp from being detached from the lamp holder and unexpectedly turning off or breaking of the external electrode.

In addition, since the widths of the first voltage distribution substrate and the second voltage distribution substrate are much narrower than the widths of the first and second voltage distribution substrates described in Embodiment 1, the edge portion surrounding the area where no image is displayed in the liquid crystal display device is used. The width can be greatly reduced.

Example 3

5 is a perspective view of a lamp assembly according to a third embodiment of the present invention. FIG. 6 is an exploded perspective view of the lamp assembly shown in FIG. 5. FIG. 7 is an exploded perspective view illustrating the first voltage distribution substrate and the second voltage distribution substrate shown in FIG. 3 lying down.

5 to 7, the lamp assembly 800 includes an external electrode lamp 810, a first voltage distribution board 820, a second voltage distribution board 840, a first inverter 860, and a second inverter. 870.

Referring to FIG. 7, the external electrode lamp 810 includes a lamp body 811, a first external electrode 813, and a second external electrode 815. Since the configuration of the lamp body 811 is the same as that described in Embodiment 1 described above in detail, a detailed description thereof will be omitted.

The first external electrode 813 and the second external electrode 815 are discharged to dissociate the discharge gas injected into the lamp body 811 by receiving a discharge voltage from the first inverter 860 and the second inverter 870. Generates.

The first external electrode 813 surrounds one end of the lamp body 811, and the second external electrode 815 surrounds the other end of the lamp body 811. The first and second external electrodes 813 and 815 are formed of a conductor, for example, a metal material.

The first external electrode 813 includes a first electrode body 814 and a first electrode lead wire 814a. The first electrode body 814 has a cylindrical shape with conductivity, and the first electrode body 814 is fitted to one end of the lamp body 811 to surround one end. The first electrode lead wire 814a is formed in a rod shape and protrudes from the first electrode body 814 in a protrusion shape.

The second external electrode 815 includes a second electrode body 816 and a second electrode lead wire 816a. The second electrode body 816 has a cylindrical shape with conductivity, and the second electrode body 816 is fitted to the other end of the lamp body 811 to surround the other end. The second electrode lead wire 816a is formed in a rod shape and protrudes from the second electrode body 816 toward the second voltage distribution substrate 840.

The first voltage distribution substrate 820 and the second voltage distribution substrate 840 connect at least two or more external electrode lamps 810 in parallel, and are applied from the first inverter 860 and the second inverter 870. The discharge voltage is supplied to each external electrode lamp 810.

Referring to FIG. 7, the first voltage distribution board 820 includes a first base board 821, a first connector 830, and a second connector 832. The first base substrate 821 is a printed circuit board in a preferred embodiment. The length of the first base substrate 821 has a length suitable to accommodate the external electrode lamps 810 arranged in parallel.

A first conductive pattern 823, a first coupling hole 827, a second conductive pattern 825, and a second coupling hole 829 are formed in the first base substrate 821.

The first conductive pattern 823 extends in the longitudinal direction of the first base substrate 821, and is an odd-numbered external electrode of the external electrode lamps 810 fixed to the first voltage distribution substrate 820. Connect the lamps in parallel.

The first coupling hole 827 is a hole formed in the first conductive pattern 823. Since the first electrode lead wire 814a of the odd-numbered external electrode lamps is inserted into the first coupling hole 827, the diameter of the first coupling hole 827 is slightly larger than the diameter of the first electrode lead wire 814a. The first coupling hole 827 is formed corresponding to a position to which the first electrode lead wire 814a of the external electrode lamps disposed odd-numbered in the first voltage distribution substrate 820 of the first conductive pattern 823 is connected. The number of the first coupling holes 827 is formed to be equal to or greater than the number of external electrode lamps arranged in an odd number in the first voltage distribution substrate 820. Here, the first conductive pattern 823, the first coupling hole 827, and the first electrode lead wire 814a inserted into the first coupling hole 827 are electrically connected by solder.

The second conductive pattern 825 is spaced apart from the first conductive pattern 823, is electrically insulated from the first conductive pattern 823, and is formed to extend in the longitudinal direction of the first base substrate 821. The second conductive pattern 825 connects the even-numbered external electrode lamps of the external electrode lamps 810 fixed to the first voltage distribution substrate 820 in parallel.

The second coupling hole 829 is a hole formed in the second conductive pattern 825. The second electrode lead wires 814a of even-numbered external electrode lamps are inserted into the second coupling hole 829. It is formed to the same diameter as the diameter of the second coupling hole (829). The second coupling hole 829 is formed corresponding to the position where the first electrode lead wire 814a of the even-numbered external electrode lamps of the second conductive pattern 825 are to be connected. The number of the second coupling holes 829 is formed to be equal to or greater than the number of external electrode lamps disposed evenly on the first voltage distribution substrate 820. Here, the first conductive lead 814a inserted into the second conductive pattern 825, the second coupling hole 829, and the second coupling hole 829 is electrically connected by solder.

The first connector 830 is connected to the first conductive pattern 823. The first connector 830 is coupled to the first terminal 866 of the first inverter 860 to be described later to receive the first discharge voltage.

The second connector 832 is connected to the second conductive pattern 825. The second connector 832 is coupled to the first terminal 876 of the second inverter 870 to be described later to receive the first discharge voltage.

Referring back to FIG. 7, the second voltage distribution board 840 includes a second base board 841, a third connector 850, and a fourth connector 852.

The second base substrate 841 is a printed circuit board in a preferred embodiment. The size of the second base substrate 841 is the same as that of the first base substrate 821.

A third conductive pattern 843, a third coupling hole 847, a fourth conductive pattern 845, and a fourth coupling hole 849 are formed in the second base substrate 841.

The third conductive pattern 843 extends along the length direction of the second base substrate 841, and is an odd-numbered external electrode of the external electrode lamps 810 fixed to the second voltage distribution substrate 840. Connect the lamps in parallel.

The third coupling hole 847 is a hole formed in the third conductive pattern 843. The second electrode lead wire 816a of the odd numbered external electrode lamps is inserted into the third coupling hole 827, and the diameter of the third coupling hole 847 is slightly larger than the diameter of the second electrode lead wire 816a. The third coupling hole 847 is formed corresponding to a position to which the second electrode lead wire 816a of the odd numbered external electrode lamps of the third conductive pattern 843 is to be connected. The number of the third coupling holes 847 is greater than or equal to the number of external electrode lamps disposed in an odd number in the second voltage distribution substrate 840. Here, the second electrode lead wire 816a inserted into the third conductive pattern 843, the third coupling hole 847, and the third coupling hole 847 is electrically connected by solder.

The fourth conductive pattern 845 is spaced apart from the third conductive pattern 843 to be electrically insulated from the third conductive pattern 843, and is formed to extend in the longitudinal direction of the second base substrate 841. The fourth conductive pattern 845 connects the external electrode lamps arranged evenly among the external electrode lamps 810 fixed to the second voltage distribution substrate 840 in parallel.

The fourth coupling hole 849 is a hole formed in the fourth conductive pattern 845. The second electrode lead wires 816a of the even-numbered external electrode lamps are inserted into the fourth coupling hole 849 and have the same diameter as that of the third coupling hole 847. The fourth coupling hole 849 is formed corresponding to the position where the second electrode lead wire 816a of the even-numbered external electrode lamps of the fourth conductive pattern 845 are to be connected. The number of fourth coupling holes 849 is formed to be equal to or greater than the number of external electrode lamps disposed evenly in the second voltage distribution substrate 840. The second electrode lead wire 816a inserted into the fourth conductive pattern 845, the fourth coupling hole 849, and the fourth coupling hole 849 is electrically connected by solder.

The third connector 850 is connected to the third conductive pattern 843. The third connector 850 is coupled to the second terminal 868 of the first inverter 860 to be described later to receive a first discharge voltage.

The fourth connector 852 is connected to the fourth conductive pattern 845. The fourth connector 852 is coupled to the second terminal 878 of the second inverter 870 to be described later to receive the first discharge voltage.

Referring back to FIG. 7, the first inverter 860 is connected to the first connector 830 and the third connector 850. The second inverter 870 is connected to the second connector 832 and the fourth connector 852.

The first inverter 860 and the second inverter 870 have a first discharge voltage applying line 862, 872, a second discharge voltage applying line 864, 874, a first terminal 866, 876, and a second terminal. (868, 878).

The first discharge voltage applying lines 862 and 872 connect the first inverter 860 and the first terminal 866, and the second inverter 870 and the first terminal 876 to connect the first and second inverters. The first discharge voltage generated at 860 and 870 is applied to the first terminals 866 and 876.

As described above, the first terminal 866 is connected to the first connector 830, and the first terminal 876 is connected to the third connector 850.

The second discharge voltage application lines 864 and 874 connect the first inverter 860 and the second terminal 868, and the second inverter 870 and the first terminal 878 to connect the first and second inverters. The second discharge voltage generated at 860 and 870 is applied to the second terminals 868 and 878.

As described above, the second terminal 868 is connected to the second connector 832, and the second terminal 878 is connected to the fourth connector 852.                     

As in this embodiment, odd-numbered external electrode lamps of the external electrode lamps installed on the first and second voltage distribution boards are connected in parallel to the first inverter, and even-numbered external electrode lamps are connected in parallel. When connected to the second inverter, the liquid crystal display device can be displayed even if an abnormality occurs in any one of the first inverter and the second inverter, thereby improving product reliability.

In addition, since the external electrodes are fixed to the first voltage distribution substrate and the second voltage distribution substrate by soldering, the external electrodes may not be separated from the first and second voltage distribution substrates even when a severe shock or vibration is applied. Therefore, it is possible to prevent the external electrode lamp from turning off or the external electrode from flowing into the display area.

In addition, since the first and second voltage distribution boards are placed upright so that one surface of the first and second voltage distribution boards on which the conductive patterns are formed is in contact with the side of the storage space, the edge surrounding the area where the image is not displayed in the liquid crystal display device. The width of the portion can be further reduced than in Example 2.

In addition, although the odd-numbered and even-numbered lamps are driven using two inverters in this embodiment, preferably, the odd-numbered and even-numbered lamps may be driven using one inverter.

Embodiments of Liquid Crystal Display

Example 4

8 is a view showing in detail a liquid crystal display according to a fourth embodiment of the present invention.

Referring to FIG. 8, the liquid crystal display 600 according to the present invention includes a display unit 100 for displaying an image, a backlight assembly 300 for providing light to the display unit 100, and a storage space 410. The bottom chassis 400 is formed to cover the top chassis 400 and the top chassis 500 coupled to the bottom chassis 400. A portion of the top chassis 500 corresponding to the display area of the display unit 100 is opened 510 to expose the display area to the outside.

The display unit 100 includes a liquid crystal display panel 110 constituting a screen, a gate side and a data side printed circuit board 120 and 130 for driving the liquid crystal display panel 110.

The backlight assembly 300 includes a lamp assembly 200 and an optical device 330.

Referring to FIG. 8, the lamp assembly 200 includes an external electrode lamp 210, a first voltage distribution board 220, a second voltage distribution board 240, and an inverter. Since the lamp assembly 200 according to the present embodiment is the same as the first embodiment described above, a duplicate description thereof will be omitted.

Referring to FIG. 8, the optical device 330 includes a diffusion plate 310 and an optical sheet 320.

The diffusion plate 310 is installed above the lamp assembly 200 and uniformly diffuses the light emitted from the external electrode lamp 210.                     

The optical sheets 320 are disposed on an upper surface of the diffuser plate 310 facing the liquid crystal display panel 110 and improve characteristics of light transmitted from the diffuser plate 310.

Reference numeral 340 of FIG. 1 denotes a middle chassis for supporting the liquid crystal display panel 110.

Example 5

9 is a perspective view specifically showing a liquid crystal display device according to a fifth embodiment of the present invention.

9, the liquid crystal display 600 according to the present invention includes a display unit 100 for displaying an image, a backlight assembly 300 for providing light to the display unit 100, and a storage space 410. The bottom chassis 400 is formed to cover the top chassis 400 and the top chassis 500 coupled to the bottom chassis 400. A portion of the top chassis 500 corresponding to the display area of the display unit 100 is opened 510 to expose the display area to the outside.

The display unit 100 includes a liquid crystal display panel 110 constituting a screen, a gate side and a data side printed circuit board 120 and 130 for driving the liquid crystal display panel 110.

The backlight assembly 300 includes a lamp assembly 700 and an optical device 330.

9, the lamp assembly 700 includes an external electrode lamp 710, a first voltage distribution board 720, a second voltage distribution board 740, and an inverter 760. Since the lamp assembly 700 according to the present embodiment is the same as the second embodiment described above, a duplicate description thereof will be omitted.

Referring to FIG. 9, the optical device 330 includes a diffusion plate 310 and an optical sheet 320.

The diffusion plate 310 is installed above the lamp assembly 200 and uniformly diffuses the light emitted from the external electrode lamp 210.

The optical sheets 320 are disposed on an upper surface of the diffuser plate 310 facing the liquid crystal display panel 110 and improve characteristics of light transmitted from the diffuser plate 310.

Reference numeral 340 of FIG. 1 denotes a middle chassis for supporting the liquid crystal display panel 110.

Example 6

10 is a perspective view specifically showing a liquid crystal display according to a sixth embodiment of the present invention.

Referring to FIG. 10, the liquid crystal display 600 according to the present invention includes a display unit 100 for displaying an image, a backlight assembly 300 for providing light to the display unit 100, and a storage space 410. The bottom chassis 400 is formed to cover the top chassis 400 and the top chassis 500 coupled to the bottom chassis 400. A portion of the top chassis 500 that corresponds to the display area of the display unit 100 is opened 510 to expose the display area to the outside.

The display unit 100 includes a liquid crystal display panel 110 constituting a screen, a gate side and a data side printed circuit board 120 and 130 for driving the liquid crystal display panel 110.

The backlight assembly 300 includes a lamp assembly 800 and an optical device 330.

10, the lamp assembly 800 includes an external electrode lamp 810, a first voltage distribution board 820, a second voltage distribution board 840, a first inverter 860, and a second inverter 870. It includes. Since the lamp assembly 700 according to the present embodiment is the same as the second embodiment described above, a duplicate description thereof will be omitted.

Referring to FIG. 10, the optical device 330 includes a diffusion plate 310 and an optical sheet 320.

The diffusion plate 310 is installed above the lamp assembly 200 and uniformly diffuses the light emitted from the external electrode lamp 210.

The optical sheets 320 are disposed on an upper surface of the diffuser plate 310 facing the liquid crystal display panel 110 and improve characteristics of light transmitted from the diffuser plate 310.

Reference numeral 340 of FIG. 1 denotes a middle chassis for supporting the liquid crystal display panel 110.

As described above in detail, since the first and second voltage distribution boards completely fix the external electrode lamps, the external electrodes of the external electrode lamps flow into the display area of the liquid crystal display or discharge to the external electrodes by flow. The external electrodes are not separated from the first and second voltage distribution substrates applying the voltage. Therefore, there is an effect that can improve the display quality of the screen and the reliability of the product.

In addition, since the width of the edge portion surrounding the area where the image is not displayed in the liquid crystal display device can be reduced, the appearance quality of the liquid crystal display device can be improved.

In this embodiment, preferably, the pair of electrodes formed at both ends of the lamp are all external electrodes. Alternatively, at least one of the pair of electrodes formed at both ends of the lamp is the external electrode, and the other is the internal electrode. It may be used as an electrode.

In the detailed description of the present invention described above with reference to a preferred embodiment of the present invention, those skilled in the art or those skilled in the art having ordinary knowledge in the scope of the invention 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 (26)

A plurality of lamps including a lamp body on which a fluorescent layer is applied to an inner wall and a discharge gas is injected, and at least one pair of electrodes disposed on a surface of the lamp body; A first voltage distribution substrate connected in parallel to a first electrode of one of the pair of electrodes, applying the first discharge voltage to each of the first electrodes, and preventing the first electrodes from being separated; And A second voltage distribution substrate connected in parallel to a second electrode of the pair of electrodes, applying a second discharge voltage to each of the second electrodes, and preventing separation of the second electrodes; Each of the first and second voltage distribution substrates is connected to each of the first and second electrodes, respectively, so as to prevent the first and second electrodes from moving, the first and second lamp holders of the conductive material, and the first and second lamp holders. Two first and second insulating bodies each having two lamp holders mounted thereon, and the first and second lamp holders respectively mounted on the first and second insulating bodies and mounted in the first and second insulating bodies, respectively, in parallel. And a first and a second conductive pattern for connecting. The inverter of claim 1, wherein a first terminal of the inverter applying the first discharge voltage is connected to the first voltage distribution board, and a second terminal of the inverter applying the second discharge voltage is connected to the second voltage distribution board. Lamp assembly, characterized in that. delete delete delete delete delete The method of claim 1, wherein one side of the first lamp holder facing the first electrodes is formed with an insertion groove to which the first electrode is connected, the coupling protrusion having elasticity protrudes on the inner surface of the insertion groove And fix the first electrode. The lamp assembly of claim 2, wherein the first conductive pattern is provided with a first connector to which the first terminal is coupled. delete The method of claim 1, wherein one side of the second lamp holder facing the second electrodes is formed with an insertion groove connected to the second electrode, the coupling protrusion having an elastic protruding on the inner surface of the insertion groove And fix the second electrode. The lamp assembly of claim 2, wherein the second conductive pattern is provided with a second connector to which the second terminal is coupled. delete A plurality of lamps including a lamp body on which a fluorescent layer is applied to an inner wall and a discharge gas is injected, and at least one pair of electrodes disposed on a surface of the lamp body; A first voltage distribution substrate connected in parallel to a first electrode of one of the pair of electrodes, applying the first discharge voltage to each of the first electrodes, and preventing the first electrodes from being separated; And A second voltage distribution substrate connected in parallel to a second electrode of the pair of electrodes, applying a second discharge voltage to each of the second electrodes, and preventing separation of the second electrodes; Each of the first and second voltage distribution substrates may include a first and a second insulating body and first and second electrodes of odd-numbered lamps in odd-numbered positions of the lamps installed on the first and second voltage distribution substrates, respectively. First and third coupling holes formed in the first and second insulating bodies so as to be fitted therein; Second and fourth couplings formed in the first and second insulating bodies so that the first and second electrodes of the even-numbered lamps among the lamps installed on the first and second voltage distribution substrates are respectively fitted. A ball, a first and a third conductive pattern connected to each of the first and third coupling holes in a parallel manner, and a second and fourth coupling hole to each of the second and fourth coupling holes in a parallel manner, respectively And a second and fourth conductive pattern spaced apart from and insulated from the first and third conductive patterns. The method of claim 14, wherein the first coupling hole, the first electrode, and the first conductive pattern are electrically connected by solder, and the second coupling hole, the second electrode, and the second conductive pattern are each soldered. Lamp assembly, characterized in that electrically connected by. The first inverter of claim 14, wherein the first inverter includes a first terminal applying the first discharge voltage and a second terminal applying the second discharge voltage to the second voltage distribution board. A second inverter having a first terminal for applying the first discharge voltage and a second terminal for applying the second discharge voltage to the second voltage distribution board; The first conductive pattern is provided with a first connector to which the first terminal of the first inverter is coupled, and the second conductive pattern is provided with a second connector to which the first terminal of the second inverter is coupled. Lamp assembly. delete The method of claim 14, wherein the third coupling hole, the first electrode, and the third conductive pattern are electrically connected by solder, and the fourth coupling hole, the second electrode, and the fourth conductive pattern are the solder. Lamp assembly, characterized in that electrically connected by. The first inverter of claim 14, wherein the first inverter includes a first terminal applying the first discharge voltage and a second terminal applying the second discharge voltage to the second voltage distribution board. A second inverter having a first terminal for applying the first discharge voltage and a second terminal for applying the second discharge voltage to the second voltage distribution board; The third conductive pattern is provided with a third connector to which the second terminal of the first inverter is coupled, and the fourth conductive pattern is provided with a fourth connector to which the second terminal of the second inverter is coupled. Lamp assembly. A plurality of lamps including a lamp body for generating light and a pair of electrodes at least one of which are disposed on a surface of the lamp body, a first electrode which is one of the pair of electrodes is fitted and connected in parallel, A first voltage distribution substrate for preventing the separation of the first electrodes, and a second voltage distribution substrate for inserting and connecting the second electrode, which is the remaining of the pair of electrodes, in parallel and preventing the separation of the second electrodes; Lamp assembly; And A liquid crystal display panel for converting light generated from the lamp assembly into image light including information; Each of the first and second voltage distribution substrates is connected to each of the first and second electrodes, respectively, so as to prevent the first and second electrodes from moving, the first and second lamp holders of the conductive material, and the first and second lamp holders. Two first and second insulating bodies each having two lamp holders mounted thereon, and the first and second lamp holders respectively mounted on the first and second insulating bodies and mounted in the first and second insulating bodies, respectively, in parallel. And first and second conductive patterns to be connected. delete delete delete delete A plurality of lamps including a lamp body for generating light and a pair of electrodes at least one of which are disposed on a surface of the lamp body, a first electrode which is one of the pair of electrodes is fitted and connected in parallel, A first voltage distribution substrate for preventing the separation of the first electrodes, and a second voltage distribution substrate for inserting and connecting the second electrode, which is the remaining of the pair of electrodes, in parallel and preventing the separation of the second electrodes; Lamp assembly; And A liquid crystal display panel for converting light generated from the lamp assembly into image light including information; Each of the first and second voltage distribution boards may include first and second insulating bodies, and first and second electrodes of odd-numbered lamps of odd numbered lamps installed on the first and second voltage distribution boards. First and third coupling holes formed in the first and second insulating bodies to be fitted, and first and second electrodes of even-numbered lamps in even-numbered positions among the lamps installed in the first and second voltage distribution substrates. The second and fourth coupling holes formed in the first and second insulating bodies, the first and third conductive patterns connected in parallel to the first and third coupling holes, respectively, and the second and fourth coupling holes so as to be fitted therein. And a second and fourth conductive pattern connected to each of the balls in a parallel manner and spaced apart from the first and third conductive patterns by a predetermined distance, and insulated from the first and third conductive patterns. Device. delete

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