KR101221126B1 - Backlight assembly and liquid crystal display device having the same - Google Patents

Abstract

The present invention provides a backlight assembly and a liquid crystal display device having the same, which improve brightness unevenness and easily attach and detach a light source assembly. The disclosed backlight assembly includes a light source for emitting light, a support main having a hole to which the light source is detached, and a support main fixed to surround the support main, and a wire for supplying power to the side surface corresponding to the hole as a light source. It includes; a bottom case formed with a withdrawal portion is drawn out.

U-shaped lamp, putting on and taking off, brightness, support main, bottom case

Description

BACKLIGHT ASSEMBLY AND LIQUID CRYSTAL DISPLAY DEVICE HAVING THE SAME}

1 is an exploded perspective view and detailed view of a conventional liquid crystal display device for a notebook.

2 is a perspective view showing a light source of a conventional liquid crystal display device.

3 is an exploded perspective view and a detailed view showing a liquid crystal display of the present invention.

4 is a perspective view illustrating a light source assembly of a liquid crystal display according to the present invention;

5 is a perspective view showing a removable light source assembly of the liquid crystal display according to the present invention.

Description of the Related Art [0002]

170: support main 180: light source assembly

181: lamp 182: glass tube

183, 183 ': First and second wires 184, 184': First and second electrodes

185 connector 187 lamp holder

188: fixing means 190: bottom case

191: withdrawal portion 193: fixing hole

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight assembly, and more particularly, to a backlight assembly and a liquid crystal display having the same, which improve brightness unevenness and easily attach and detach a light source assembly.

In general, a liquid crystal display (LCD), which is one of flat panel displays, has better visibility and lower average power consumption than a CRT having the same screen size as compared to a cathode ray tube (CRT). Due to its small size, it is recently attracting attention as a next-generation display device for mobile phones, computers, monitors, and televisions, together with plasma display panels (PDPs) and field emission displays (FEDs).

The liquid crystal display device displays an image by generating a contrast by injecting a liquid crystal material, which is an intermediate between solid and liquid, between two thin glass plates having special surface treatments, and changing the arrangement of liquid crystal molecules by a voltage difference between electrodes on upper and lower glass plates. Since the liquid crystal display device does not emit light by itself, the liquid crystal display device needs a light source to visually recognize the display content.

Hereinafter, a liquid crystal display according to the related art will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view and detailed view of a conventional liquid crystal display for a notebook, and FIG. 2 is a perspective view showing a light source assembly of a conventional liquid crystal display.

As shown in FIGS. 1 and 2, a conventional liquid crystal display for a notebook includes a liquid crystal panel 10 for displaying an image and a backlight assembly 20 for supplying light.

The backlight assembly 20 includes two lamps 81 provided at side surfaces to emit light, a light guide plate 50 for converting light generated from the lamp 81 into a surface light source, and an image on the light guide plate 50. A support main 70 having a rectangular shape having an accommodating space disposed in the optical sheet 30 for diffusing and condensing the light, and accommodating the lamp 81, the light guide plate 50, and the optical sheet 30. It includes a bottom case 90 provided in a form surrounding the support main 70.

The lamp 81 is provided in two to implement a high brightness liquid crystal display, but is not limited thereto and may be provided in two or more.

The lamp 81 is disposed on the side of the support main 70, and a predetermined hole 71 is formed on the side of the support main 70 and the bottom case 90 on which the lamp 81 is disposed. A plurality of wires 83 electrically connected to an external power source by a lamp 81 and the wires 83 are drawn out to the outside of the support main 70 through the holes 71 of the support main 70. It is connected to the connector (85) of. The connector 85 is connected to a terminal of an inverter (not shown) provided on the rear surface of the liquid crystal display to supply power.

In the conventional liquid crystal display, two lamps 81 are provided to implement high brightness so that two high voltage electrodes A on one side of the lamp 81 are soldered separately, and two low voltage electrodes on the other side. (B) is soldered into one. Accordingly, a total of three wires 83 are provided, and the high voltage side electrode A and the low voltage side electrode B are mounted on the lamp holders 87 and 87 'and fixed to the support main 70.

The lamp holders 87 and 87 'may be made of a rubber material to easily fix the lamp 81.

The lamp holders 87 and 87 'are provided to surround the high voltage electrode A and the low voltage electrode B to protect the lamp 81 and to prevent external electrical interference.

However, the plurality of lamps 81 have a structure in which the lamp holders 87 and 87 'are enclosed after soldering to both the high voltage electrode A and the low voltage electrode B. 87, 87 ') occurs in the display area corresponding to the area where the light emitting device is disposed. The dark phenomenon has a problem of causing an unbalance in brightness of the display screen as a whole.

The liquid crystal display device has a problem that most of defects are caused by the lamp 81 such as a failure of the lamp 81 to be decomposed or disposed of when the lamp 81 is defective or has a reduced life. In addition, since the lifetime of the lamp 81 directly affects the lifetime of the liquid crystal display device, the lifetime of the liquid crystal display device may be shortened by the lamp 81 which is not removable.

SUMMARY OF THE INVENTION An object of the present invention is to provide a backlight assembly and a liquid crystal display device having the same, which includes a lamp having a 'U' shape that can be attached and detached to extend brightness and extend its lifespan.

In order to achieve the above object, the backlight assembly according to the present invention,

A light source assembly having a lamp having a 'U' shape, a plurality of wires connected to one side of the lamp, and a lamp holder disposed at one side of the lamp;

A support main formed at a corner of a 'b' shaped groove in which the light source assembly is detached;

It is fixed in a form surrounding the support main, extends from the corner of the 'b' shaped grooves includes a bottom case formed with a lead portion for drawing the wire, so that the lead portion corresponds to the 'b' shaped grooves It is formed in one side from the edge of the bottom case.

In addition, the liquid crystal display device according to the present invention,

A light source assembly having a lamp having a 'U' shape, a plurality of wires connected to one side of the lamp, and a lamp holder disposed at one side of the lamp;

A support main formed at a corner of a 'b' shaped groove in which the light source assembly is detached;

A bottom case fixed in a form surrounding the support main and extending from an edge at which the groove is formed, and having a lead portion through which the wire is drawn; And

It includes a liquid crystal panel for displaying a predetermined image by the light emitted from the light source assembly, the lead portion is formed extending from one corner of the bottom case to correspond to the 'b' shaped groove.

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

3 is an exploded perspective view and a detailed view of the liquid crystal display of the present invention.

As shown in FIG. 3, in the liquid crystal display of the present invention, the same components are denoted by the same reference numerals among the components of the conventional liquid crystal display shown in FIG. 1, and thus, detailed descriptions thereof will be omitted.

The liquid crystal display of the present invention includes a support main 170 and a bottom case 190 fixed to the support main 170.

Although not shown, one side of the support main 170 is provided with a lamp for emitting light.

A front side of the bottom case 190 is provided with a reflector (not shown) that is attached or coated to reflect light.

The support main 170 has a 'b' groove for forming the lamp in the corner area where the first and second wires 183 and 183 'of the side where the lamp is provided is drawn out, and the' b 'groove is formed. Is formed extending a predetermined distance on both sides with respect to the corner.

In the LCD, a lamp having a 'U' shape is disposed, and first and second wires 183 and 183 'for electrically connecting the lamp and an external power source are connected, and the first and second wires ( 183 and 183 'are provided at one side of the lamp to which the lamp holder 187 is provided to protect the lamp.

The 'U' shaped lamp may be any one of a cold cathode fluorescent lamp (CCFL), a hot cathode fluorescent lamp (HCFL), an external electrode fluorescnt lamp (EEFL), and an external & internal electrode fluorescent lamp (EIFL).

The first and second wires 183 and 183 ′ are connected to the connector 185, and although not shown, the connector 185 is connected to an external power supply unit.

The lamp holder 187 may be a flexible rubber material to apply the external force to fix the lamp holder 187 to the support main 170 and the bottom case 190.

A hook-shaped fixing means 188 that is engaged with the bottom case 190 is formed in a central region of one side of the lamp holder 187.

The fixing means 188 is integrally formed with the lamp holder 187 and has a predetermined height to be fastened with the bottom case 190.

The fixing means 188 is formed to be inclined in the opposite direction in which the lamp is provided is easily formed detachable.

The bottom case 190 may be configured to withdraw the first and second wires 183 and 183 'on the side of the lamp, and to have the stepped withdrawal unit 191 and the withdrawal unit for attaching and detaching the lamp. 191 has a rectangular fixing hole 193 in the lower portion.

The lead portion 191 is formed at a side of the bottom case 190 corresponding to the area in which the lamp is provided in a right angle shape and is formed to correspond to the 'b' groove of the support main 170.

The fixing hole 193 is formed to correspond to the fixing means 188 of the lamp holder 187.

When the bottom case 190 is fixed to the support main 170 by a screw or a protrusion and a hole in the form of wrapping on the back of the support main 170, and the bottom case 190 and the support main 170 is fixed The lamp is inserted into the 'b' groove.

When the lamp is inserted, the first and second wires 183 and 183 'are inserted to correspond to the lead portion 191 of the bottom case 190, and the high water purification stage 188 of the lamp holder 187 is inserted. ) Is fastened to the fixing hole 193 of the bottom case 190.

The lamp holder 187 is a flexible rubber material and is fixed to the support main 170 and the bottom case 190 by an external force.

Therefore, the liquid crystal display of the present invention may improve the darkness caused by the lamp holder 187 by providing only one lamp holder 187 provided on one side of the lamp by having a 'U' shaped lamp.

In addition, the structure of the lamp may be attached or detached in the event of a defective lamp or a deterioration of the life of the lamp, thereby extending the life of the LCD.

4 is a perspective view illustrating a light source assembly of a liquid crystal display according to the present invention.

As shown in FIG. 4, the light source assembly 180 according to the present invention includes a 'U' shaped lamp 181 that emits light, and first and second devices connected to an external power source to the lamp 181. Wires 183 and 183 ', a connector 185 provided at ends of the first and second wires 183 and 183', and a lamp holder 187 for protecting and fixing the lamp 181. do.

The 'U' shaped lamp 181 includes a 'U' shaped glass tube 182 having a 'U' shaped bending portion C, inert gases (not shown) inside the glass tube 182, First and second electrodes 184 and 184 ′ formed at the ends of the glass tube 182 are included. An inert gas is filled in the lamp 181, and a fluorescent material (not shown) is coated on an inner wall of the glass tube 182.

The first and second electrodes 184 and 184 'are formed of internal electrodes formed inside the ends of the glass tube 182. The first electrode 184 is supplied with a voltage having a first phase from the outside, and the second electrode 184 'is supplied with a voltage having a second phase different from the first phase (180 ^o ) from the outside.

Meanwhile, the first and second electrodes 184 and 184 'may have an external electrode formed outside the end of the glass tube 182, and an internal electrode may be formed at one end of the glass tube 182 and the other end may be formed at the other end of the glass tube 182. An external electrode may be formed.

The lamp holder 187 is fastened to an end of the lamp 181 in which the first and second electrodes 184 and 184 'are formed, and in the direction in which the first and second wires 183 and 183' are drawn out. A hook-shaped fixing means 188 is formed in the central region of the side of the lamp holder 187.

The fixing means 188 may be attached to one side (the opposite direction of the lamp) is inclined to facilitate the attachment and detachment of the light source assembly 180.

The fixing means 188 is fastened to the fixing hole 193 of the bottom case 190 to prevent breakage due to the flow of the light source assembly 180, and to attach or detach the light source assembly 180 to allow the light source assembly 180 to be detached. ) Can be replaced in case of defective or deteriorated life, which can prolong the life of LCD.

5 is a perspective view illustrating a detachable light source assembly of a liquid crystal display according to the present invention.

As shown in FIG. 5, a diagram illustrating detachment of a light source assembly of a liquid crystal display according to the present invention.

In the liquid crystal display, the components are the same as those described in detail with reference to FIGS. 3 and 4, and the same reference numerals are used together, and detailed descriptions of the components will be omitted.

The light source assembly 180 is inserted into one side of the bottom case 190 corresponding to the 'b' groove of one side of the support main 170 and the 'b' groove of the support main 170 from the lamp 181.

The lamp holder 187 is a rubber material and is inserted in the X direction by an external force to fasten the fixing means 188 of the lamp holder 187 and the fixing hole 193 of the bottom case 190.

On the other hand, when any one of the components of the light source assembly 180 is to be replaced due to failure or reduced life, it is possible to press the fixing means 188 of the lamp holder 187 by external force and remove it in the Y direction. Can be.

In the liquid crystal display of the present invention, a lamp holder in which light is not transmitted through a lamp holder 187 disposed on only one side of the lamp 181 is disposed by arranging a 'U' shaped lamp 181 having only one electrode of the lamp. By reducing 187, the brightness of the lamp holder 187 generated during image display is improved to stabilize brightness.

In addition, the liquid crystal display of the present invention is a structure that can be attached and detached to the light source assembly 180, the effect of extending the life by replacing the light source assembly 180 when any one of the components of the light source assembly 180 is defective or reduced life There is.

The present invention has the effect of stabilizing the brightness by having a light source assembly including a 'U' shaped lamp.

In addition, the structure of the detachable light source assembly has an effect of extending the life by replacing the defective or reduced life of the components of the light source assembly.

Those skilled in the art through the above description will be capable of various changes and modifications without departing from the spirit of the present invention.

Claims (11)

A light source assembly having a lamp having a 'U' shape, a plurality of wires connected to one side of the lamp, and a lamp holder disposed at one side of the lamp; A support main formed at a corner of a 'b' shaped groove in which the light source assembly is detached; It is fixed in the form surrounding the support main, extends from the corner of the 'b' shaped groove includes a bottom case formed with a lead portion for drawing out the wire, And the lead portion is formed at one side from an edge of the bottom case to correspond to the 'b' shaped groove. delete delete delete The method of claim 1, The lamp holder comprises a fixing means fixed to the bottom case. 6. The method of claim 5, And said fixing means is formed integrally with said lamp holder. 6. The method of claim 5, The bottom case is a backlight assembly, characterized in that the fixing hole is formed in the area corresponding to the fixing means. 6. The method of claim 5, The lamp holder is a backlight assembly, characterized in that formed of a flexible rubber material to be removable. A light source assembly having a lamp having a 'U' shape, a plurality of wires connected to one side of the lamp, and a lamp holder disposed at one side of the lamp; A support main formed at a corner of a 'b' shaped groove in which the light source assembly is detached; A bottom case which is fixed in a form surrounding the support main and extends from an edge at which the 'b' shaped groove is formed and has a lead portion through which the wire is drawn; And It includes a liquid crystal panel for displaying a predetermined image by the light emitted from the light source assembly, And the lead portion extends from the edge of the bottom case to one side to correspond to the 'b' shaped groove. The method of claim 9, The lamp holder is characterized in that the fixing means is formed in the central region of one side. 11. The method of claim 10, The bottom case further comprises a fixing hole coupled to the fixing means.

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