KR20080062818A - Lamp holder, and backlight unit having the same - Google Patents

Lamp holder, and backlight unit having the same Download PDF

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Publication number
KR20080062818A
KR20080062818A KR1020060138948A KR20060138948A KR20080062818A KR 20080062818 A KR20080062818 A KR 20080062818A KR 1020060138948 A KR1020060138948 A KR 1020060138948A KR 20060138948 A KR20060138948 A KR 20060138948A KR 20080062818 A KR20080062818 A KR 20080062818A
Authority
KR
South Korea
Prior art keywords
lamp
backlight unit
lamp holder
liquid crystal
crystal display
Prior art date
Application number
KR1020060138948A
Other languages
Korean (ko)
Inventor
허형구
Original Assignee
엘지디스플레이 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지디스플레이 주식회사 filed Critical 엘지디스플레이 주식회사
Priority to KR1020060138948A priority Critical patent/KR20080062818A/en
Publication of KR20080062818A publication Critical patent/KR20080062818A/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
    • H01R33/945—Holders with built-in electrical component
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it

Abstract

The assembly can be improved by inserting the lamp into the lamp holder of the socket type, and the lamp holder can be easily combined by the tension structure, and the conductive rubber is applied to provide a stable power supply. A lamp holder and a backlight unit having the same are provided to protect against an impact. A backlight unit for a liquid crystal display device includes a plurality of lamps for providing light of a direct type; A plurality of lamp holders of a socket type, each of which serves as an electrode for applying power to the lamp, into which the lamp is inserted; A socket assembly coupled to the plurality of lamp holders to fix the lamp holders; And a bottom cover engaged with the socket assembly.

Description

Lamp holder and backlight unit having the same

1 is a perspective view of a general liquid crystal display module.

2 is a view showing a lamp holder structure of a backlight unit according to the prior art, Figure 3 is a view showing a state in which the lamp holder of Figure 2 coupled to the bottom cover,

4 is a view illustrating a coupling state of a lamp holder and a lamp in the backlight unit according to the exemplary embodiment of the present invention.

5 is a detailed view of the lamp holder of FIG. 4.

6 is a view showing a state in which the lamp holder coupled to the bottom cover according to an embodiment of the present invention.

7 is a view showing a bonding state of the lamp and the conductive rubber according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

100: liquid crystal display panel 200: CCFL lamp

300: lamp holder 310: socket assembly

321, 322, 323: tension bar 400: conductive rubber

The present invention relates to a liquid crystal display device, and more particularly, to a lamp holder structure of a backlight unit of a liquid crystal display device.

In general, a so-called backlight used as a light source of a liquid crystal display is a method of disposing a cylindrical fluorescent lamp, which is divided into a direct type method and a light guide plate method.

In the direct type, the fluorescent lamp is placed on a flat surface. Since the shape of the fluorescent lamp appears on the liquid crystal panel, the gap between the lamp and the liquid crystal panel must be maintained, and the light scattering means must be arranged for the uniform distribution of light. There is a limit.

In addition, as the panel is enlarged, the area of the light exit surface of the backlight is also increased. When the direct backlight is enlarged, the thickness of the light scattering means is not flat unless the light scattering means secures sufficient thickness. You must secure enough.

In the light guide plate method, a fluorescent lamp is installed outside and light is distributed to the entire surface by using the light guide plate, and a fluorescent lamp is installed on the side and light has to pass through the light guide plate, thereby having a low luminance. In addition, high optical design and processing technology for the light guide plate is required for uniform distribution of light intensity.

Since the direct type and the light guide plate have their own advantages and disadvantages, the direct type type backlight is mainly used in a liquid crystal display device in which brightness is more important than the screen thickness, and a thickness such as a notebook PC or a monitor PC is important. In the liquid crystal display device, a light guide plate type backlight is mainly used.

Meanwhile, a method of manufacturing a lamp having a U-shape has been recently developed. Since the U-shaped lamp has a close distance between electrodes, it is easy to measure a tube current and can measure an accurate luminance. .

1 is a perspective view of a general liquid crystal display module.

Referring to FIG. 1, a general liquid crystal display module generally includes a liquid crystal panel 100, a backlight assembly 150, a top cover 160, and the like.

The liquid crystal panel 100 includes a lower substrate 110, an upper substrate 120, a liquid crystal (not shown), a gate tape carrier package (TCP) 130, a gate printed circuit board 135, and a data TCP. And a data printed circuit board 145.

FIG. 2 is a view illustrating a state in which the lamp holder of FIG. 1 is coupled to a bottom cover, and FIG. 3 is a detailed view of FIG. 2.

Referring to FIG. 2, a lamp holder of a backlight unit according to the related art is a CCFL lamp fixing method, and includes a lamp wire 10 connecting a power supply with a lead wire forming an end of a lamp 50 electrode. It is fixed to each other by soldering operation, and also has a structure which fixes the lamp 50 in the lamp holder 40. As shown in FIG.

Referring to FIG. 3, in the backlight unit according to the related art, the soldering operation of the lamp 50 and the lamp wire 10 is performed, and then the lamp holder 40 is coupled. Subsequently, the backlight unit is assembled to the bottom cover 20 and combined with the support main to complete the assembly of the backlight unit.

However, according to the prior art, since the lamp is fixed by the lamp wire and the soldering operation, there is a problem that the assembly is inferior, and the assembly is not only cumbersome but also takes a long time.

An object of the present invention for achieving the above technical problem is to provide a lamp holder and a backlight unit having the same that can be assembled by inserting the lamp into the lamp holder of the socket type.

Another object of the present invention for achieving the above technical problem is to provide a lamp holder and a backlight unit having the same that can be easily coupled to the lamp by having a tension structure of the lamp holder.

Another object of the present invention for achieving the above technical problem is to provide a lamp holder and a backlight unit having the same that can be applied to the conductive rubber to provide a stable power supply and protect the lamp from impact.

The objects of the present invention are not limited to the above-mentioned objects, and other objects which are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above technical problem, a backlight unit for a liquid crystal display device according to the present invention, a plurality of lamps for providing a direct light; A plurality of lamp holders of a socket type, which serve as electrodes for applying power to the lamps, into which the lamps are inserted; A socket assembly coupled to the plurality of lamp holders to fix the lamp holders; And a bottom cover fastened to the socket assembly.

The lamp may be a Cold Cathode Fluorescent Lamp (CCFL) or a Hot Cathode Fluorescent Lamp (HCFL).

Here, each of the plurality of lamp holders may be a conductor having a tension.

The plurality of lamp holders may include two first tension bars for fixing the lamps in both side directions; And a second tension bar in contact with each end of the lamp to limit movement of the end of the lamp.

Here, further comprising a conductive coupling member fastened between the lamp and the lamp holder, wherein the conductive coupling member is characterized in that the thimble shape by inserting the end of the lamp.

Here, the conductive coupling member may be a conductive rubber, the conductive rubber is characterized in that the rubber is formed so as to pass electricity by mixing a black pigment or metal fibers with the rubber insulator.

Here, the lamp may be a straight or U-shaped lamp.

Herein, when the lamp is U-shaped, a first lamp holder of the plurality of lamp holders serves as a first electrode, a second lamp holder serves as a second electrode, and the first and second electrodes are insulated from each other. It is characterized in that.

In addition, in order to achieve the above technical problem, the lamp holder for a backlight unit according to the present invention, two first tension bars for fixing the lamp in both side directions; Second tension bars in contact with the lamp ends, respectively, to limit movement of the lamp ends; And a socket assembly fastened and fixed to the first and second tension bars, respectively.

The first and second tension bars may serve as sockets into which the lamps are inserted.

The lamp may be a cold cathode fluorescent lamp (CCFL) or a hot cathode fluorescent lamp (HCFL).

Here, the first and second tension bar is characterized in that the conductor having a tension.

Here, the lamp further comprises a conductive coupling member fastened between the first and second, wherein the conductive coupling member is characterized in that the thimble shape by inserting the end of the lamp.

Here, the conductive coupling member may be a conductive rubber, the conductive rubber is characterized in that the rubber is formed so as to pass electricity by mixing a black pigment or metal fibers with the rubber insulator.

Specific details of other embodiments are included in the detailed description and the drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various forms, and the present embodiments are merely provided to make the disclosure of the present invention complete and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, the invention is defined only by the scope of the claims.

Hereinafter, a lamp holder of a backlight unit of a liquid crystal display according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The embodiment of the present invention applies a structure of fitting the lamp to the socket type lamp holder instead of the conventional cumbersome soldering operation. In addition, the lamp holder according to an embodiment of the present invention is designed in a detachable tension coupling structure for easy coupling with the lamp. In addition, an embodiment of the present invention discloses a lamp holder that protects the lamp with safety of power supply and external shock by applying a conductive rubber between the electrode lead line of the CCFL lamp and the lamp holder of the socket type.

First, a liquid crystal module having a backlight using a general CCFL lamp will be described.

1 is an exploded perspective view of a liquid crystal module having a backlight using a common CCFL lamp.

Referring to FIG. 1, a general liquid crystal module includes a liquid crystal panel 100, a backlight assembly 150, a top cover 160, and the like as a whole.

The liquid crystal panel 100 includes a lower substrate 110, an upper substrate 120, a liquid crystal (not shown), a gate tape carrier package (TCP) 130, a gate printed circuit board 135, and a data TCP. And a data printed circuit board 145.

The backlight assembly 150 includes an optical sheet 151, a diffusion plate 152, a support main 153, a lamp 200, a reflector 155, and the like.

The lamp 200 irradiates light, and the reflector 155 is installed under the lamp 200 to reflect light emitted to the lower part of the lamp 200 toward the upper diffuser plate 152 of the reflector 155. . Here, the lamp 200 may be a straight or U-shaped lamp.

In this case, the light irradiated from the lamp 200 and the light reflected by the reflecting plate 155 are diffused by the diffuser plate 152 to have the same brightness, and then focused by an optical sheet 151 such as a prism.

In the internal space defined by the combination of the support main 153 and the bottom cover 170, the above-described components of the backlight assembly 150 are accommodated, and the bottom cover 170 is coupled to the top cover 160 again. Form a liquid crystal module.

Hereinafter, a lamp holder and a backlight unit having the same will be described with reference to FIGS. 4 to 7.

4 is a view illustrating a coupling state of a lamp holder and a lamp in the backlight unit according to an exemplary embodiment of the present invention, and FIG. 5 is a detailed view of the lamp holder of FIG. 4.

Referring to FIG. 4, the backlight unit according to the exemplary embodiment of the present invention includes a lamp 200, a lamp holder 300, a conductive coupling member 400, a socket assembly, and a bottom cover.

The lamp 200 provides light in a direct manner, and a plurality of lamps are formed on the socket assembly. The lamp may be a Cold Cathode Fluorescent Lamp (CCFL) or a Hot Cathode Fluorescent Lamp (HCFL).

Lamp holder 300 is a socket type, and serves as an electrode for applying power to the lamp 200, the lamp 200 is inserted from the top to the bottom, respectively.

Each of the plurality of lamp holders 300 may be a conductor having a tension. In addition, each of the plurality of lamp holders 300 includes two first tension bars for fixing the lamp 200 in both side directions, and the lamp 200 in contact with an end of the lamp 200, respectively. And a second tension bar to limit movement.

Here, each of the first to third tension bars is a state in which a portion of the bar extending in the vertical direction is bent outward, and thus structurally elastic.

The socket assembly is coupled to the plurality of lamp holders 300 to fix the lamp lamp holder 300, and the bottom cover is coupled to the socket assembly.

The conductive coupling member 400 is fastened between the lamp 200 and the lamp holder 300, and may have a thimble shape by inserting an end of the lamp 200.

The conductive coupling member 400 may be a conductive rubber, and the conductive rubber 400 may be a rubber formed by mixing black pigment or metal fiber with rubber as an insulator to allow electricity to flow therethrough. Typically, the conductive rubber 400 is currently commercially available, and detailed description thereof will be omitted.

In addition, the lamp 200 may be a straight or U-shaped lamp, if the lamp 200 is U-shaped, the first lamp holder of the plurality of lamp holders 300 serves as a first electrode The second lamp holder serves as a second electrode, and the first and second electrodes are insulated from each other.

That is, in the case of a straight lamp, the lamp holder 300 fastened to the socket assembly 310 are all the same electrode, but in the case of a U-shaped lamp, two different electrodes must be disposed on the socket assembly. If 300) is a first electrode, for example an anode, the next lamp holder should be a second electrode, for example a cathode. Accordingly, the socket assembly also has a structure that is insulated for each electrode.

Referring to FIG. 5, a lamp holder 300 for a backlight unit according to an embodiment of the present invention includes two first tension bars 322 and 323 for fixing the lamp 200 in both side directions; A second tension bar 321 contacting each end of the lamp 200 to limit movement of the end of the lamp 200; And a socket assembly 310 fastened and fixed to the first and second tension bars 321, 322, and 323, respectively, and further includes a conductive rubber 400.

In this case, the first and second tension bars 321, 322, and 323 serve as sockets into which the lamp 200 is inserted, and have a tension.

In addition, the conductive rubber 400 is a rubber formed by mixing a black pigment or metal fiber with rubber, which is an insulator, to facilitate electricity, and makes it easy to insert the lamp 200 into the lamp holder 300.

6 is a view illustrating a state in which a lamp holder according to an embodiment of the present invention is coupled to a bottom cover, and FIG. 7 is a view illustrating a state in which a lamp and a conductive rubber are coupled according to an embodiment of the present invention.

Referring to FIG. 6, in the backlight unit according to the embodiment of the present invention, the socket assembly 310 is fastened to the bottom cover 170, the conductive rubber 400 is coupled to the lamp 200, and then the lamp holder ( Insert it into the 300). Thereafter, by assembling with the support main, the assembly of the backlight unit is completed. Here, reference numeral 500 denotes a lamp support for supporting the lamp.

Referring to FIG. 7, in the lamp holder according to the embodiment of the present invention, the conductive rubber 400 is in the form of a thimble into which the end of the lamp 200 may be inserted, and the lamp 200 and the lamp holder 300 may be used. Located in between, and stably supply the power supply, and serves to cushion the lamp 200 from an external shock.

As a result, since the lamp holder according to the embodiment of the present invention is a socket type, a replacement operation may be performed separately when a lamp failure occurs. It also shortens the time spent on traditional soldering time. In other words, the lamp holder is a socket that can be easily inserted and removed, thereby improving work speed.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive.

According to the present invention, assembling property can be improved by fitting the lamp to the lamp holder of the socket type. In addition, the lamp holder can be easily coupled by having a tension structure.

In addition, according to the present invention, the conductive rubber can be applied to stably supply the power supply and protect the lamp from impact.

Claims (18)

A plurality of lamps providing light in a direct manner; A plurality of lamp holders of a socket type, which serve as electrodes for applying power to the lamps, into which the lamps are inserted; A socket assembly fastened to and fixed to the plurality of lamp holders; And Bottom cover is fastened to the socket assembly Backlight unit for a liquid crystal display comprising a. The method of claim 1, The lamp is a cold cathode fluorescent lamp (CFL) or a hot cathode fluorescent lamp (HOT Cathode Fluorescent Lamp (HCFL)), characterized in that the backlight unit for a liquid crystal display. The method of claim 1, And each of the plurality of lamp holders is a conductor having a tension. The method of claim 3, wherein each of the plurality of lamp holders, Two first tension bars for fixing the lamp in both side directions; And A second tension bar in contact with the lamp ends, respectively, to limit movement of the lamp ends Backlight unit for a liquid crystal display comprising a. The method of claim 1, And a conductive coupling member coupled between the lamp and the lamp holder. The method of claim 5, The conductive coupling member is a backlight unit for a liquid crystal display, characterized in that the thimble shape by inserting the end of the lamp. The method of claim 5, The conductive coupling member is a backlight unit for a liquid crystal display, characterized in that the conductive rubber. The method of claim 7, wherein The conductive rubber is a back light unit for a liquid crystal display device, characterized in that the rubber formed by mixing the black pigment or metal fibers with the rubber is an insulator. The method of claim 1, The lamp unit is a backlight unit for a liquid crystal display, characterized in that the straight or U-shaped lamp. The method of claim 9, When the lamp has a U-shape, the first lamp holder of the plurality of lamp holders serve as the first electrode, the second lamp holder serves as the second electrode, and the first and second electrodes are insulated from each other. A backlight unit for a liquid crystal display, characterized by the above-mentioned. Two first tension bars for fixing the lamp in both side directions; Second tension bars in contact with the lamp ends, respectively, to limit movement of the lamp ends; And Socket assemblies fastened and fixed to the first and second tension bars, respectively Lamp holder for a backlight unit comprising a. The method of claim 11, And the first and second tension bars serve as sockets into which the lamps are inserted. The method of claim 11, The lamp is a lamp holder for a backlight unit, characterized in that the cold cathode fluorescent lamp (CCFL) or hot cathode fluorescent lamp (HCFL). The method of claim 11, The first and second tension bar is a lamp holder for a backlight unit, characterized in that the conductor having a tension. The method of claim 11, Lamp holder for a backlight unit further comprises a conductive coupling member fastened between the lamp and the first and second. The method of claim 15, The conductive coupling member is a lamp holder for a backlight unit, characterized in that the thimble shape by inserting the end of the lamp. The method of claim 15, The conductive coupling member is a lamp holder for a backlight unit, characterized in that the conductive rubber. The method of claim 17, The conductive rubber is a lamp holder for a backlight unit, characterized in that the rubber is formed so as to conduct electricity by mixing a black pigment or metal fibers with the rubber is an insulator.
KR1020060138948A 2006-12-29 2006-12-29 Lamp holder, and backlight unit having the same KR20080062818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020060138948A KR20080062818A (en) 2006-12-29 2006-12-29 Lamp holder, and backlight unit having the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060138948A KR20080062818A (en) 2006-12-29 2006-12-29 Lamp holder, and backlight unit having the same

Publications (1)

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KR20080062818A true KR20080062818A (en) 2008-07-03

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