KR20090079104A - Frame and manufacturing method for fixing light emitting device of back light - Google Patents

Abstract

A method of manufacturing a frame for fixing a backlight of a liquid crystal display device is provided to simplify the manufacturing process by plating a wiring pattern part on the frame. A power terminal part which receives the power from the outside is formed at one side of a frame(100). In one or more connection members(40), a positive electrode or negative electrode of a backlight is connected and supported. A wiring pattern part(10) is formed in THE frame so that the connection members and power terminal part can be electrically connected to each other. The wiring pattern part is formed through the plating process. An entrance groove is formed in the frame so as to correspond to lower surfaces of the connection members.

Description

Frame for fixing backlight of liquid crystal display device and manufacturing method thereof {FRAME AND MANUFACTURING METHOD FOR FIXING LIGHT EMITTING DEVICE OF BACK LIGHT}

The present invention relates to a frame for fixing a light source of an LCD backlight and a manufacturing method thereof, and more particularly, to supply power through a wiring pattern portion without providing a separate backlight driving electrical wiring and fixing means, thereby simplifying the manufacturing process. The present invention relates to a frame for fixing a light source of an LCD backlight, and a method of manufacturing the same.

In general, a liquid crystal device (LCD) refers to a device that displays an image using a property of changing a molecule's arrangement when voltage is applied among various properties of a liquid crystal.

In this case, the liquid crystal display device contains liquid crystal in a narrow gap between two thin glass substrates and applies a voltage through a transparent electrode to change the arrangement direction of molecules to pass or reflect light, thereby making it thinner than other display devices. It is characterized by low power consumption.

However, since the liquid crystal display device is a non-emissive type display device that does not emit light by itself, a separate light source is required.

Of course, there is also a reflective liquid crystal display device using a light source of the surrounding, but generally has its own light source because it is subject to a lot of restrictions on the use of the surrounding environment.

Such independent light sources are called backlights, and the backlights include EL, LED, CCFL, HCFL, etc. Among them, CCFL (Cold Cathode Fluorescent Lamp) has a long life, low power consumption, and a liquid crystal display device. It can be formed thinly and is widely used.

On the other hand, the liquid crystal display using the backlight as described above are largely classified into two types, namely the edge light method and the direct method.

Among these, the edge method is a method in which a light source is disposed on one side or both sides of an LCD panel to reflect and diffuse light rays on a light guide plate and a reflecting plate.

On the other hand, in the direct method, a light source is placed at the bottom of the liquid crystal display panel to directly illuminate the front of the panel. The light source mainly uses electroluminescence (EL), and it is easy to obtain high brightness from the surface (light emitting surface). It is suitable for application to large liquid crystal display devices such as LCD TVs.

The liquid crystal display device using the direct backlight as described above includes a connection terminal having a frame having a predetermined shape, a connection terminal provided on the frame for connecting and supporting a backlight, and a connection member of the connection terminal to an external backlight. And an electrode plate to be interconnected with the power supply of the controller.

However, in the related art, in order to electrically connect the connection member of the connection terminal to which the backlight is connected and supported with an external backlight controller, an electrical wiring such as an electrode plate must be additionally provided, and the electrode plate or the like is connected to the frame. It is necessary to install a separate fixing means or fixing means for fixing.

Therefore, the related art has a problem in that the manufacturing process is complicated, such as mounting an electric wiring, an electrode plate, and the like to fix and connect a backlight to the frame one by one, and have many components.

The present invention has been proposed to solve the above problems, and an object of the present invention is to plate the wiring pattern portion formed integrally with all the components on the frame without the provision of a separate backlight connection electrode plate, fixing means, etc. The present invention provides a frame for fixing a backlight of a liquid crystal display device and a method of manufacturing the same, which simplifies the manufacturing process, reduces the manufacturing cost, and freely changes the shape.

Another object of the present invention is to enable the automation of the process of forming the wiring pattern portion in the frame, it is possible to reduce the manufacturing time and manufacturing cost.

Another object of the present invention is to provide an auxiliary connection member for auxiliary connection and support of the electrodes of the backlight connected and supported by the connection member to enable stable connection, thereby reducing the connection failure rate backlight of the liquid crystal display device It is to provide a fixing frame.

The backlight fixing frame of the liquid crystal display (LCD) according to the present invention for the above purpose, the frame is formed with a power terminal for receiving power from the outside on one side, the + electrode or-electrode of the backlight is connected and supported At least one connection member and a wiring pattern portion formed in the frame so that the connection member and the power terminal is electrically connected to each other, the access groove is formed in the frame to correspond to the bottom portion of the connection member, the connection member is It is configured to be detachable from the access groove of the frame, the wiring pattern portion is formed by plating.

Here, the frame may further include an auxiliary connection member for auxiliary connection and support of the electrodes of each backlight connected and supported by each connection member.

Preferably, the connection member may include a gripping portion for supporting the backlight body and a connection hole for supporting the backlight electrode.

Preferably, all parts of the connection member except for the gripping portion are plated.

On the other hand, the manufacturing method of the frame for fixing the backlight of the liquid crystal display device according to the present invention, the frame forming step of injection molding the frame formed with the power terminal using the first mold; A plating preventing member forming step of injection-molding a plating preventing member on the holding portion of the connection member and the non-plating treatment portion of the wiring pattern portion of the frame by using a second mold; A plating step of plating the frame and the connection member 40 on which the plating prevention member is injection molded; A plating preventing member removing step of removing the plating preventing member by immersing the plated frame and the connecting member 40 in the removing liquid reacting with the plating preventing member; And a connecting member joining process of coupling the partially plated connecting member to the frame.

The plating preventing member is made of a water-soluble polymer material, the removal liquid is made of water.

Wherein the water-soluble polymer material is made of polyvinyl alcohol (PVA).

Meanwhile, the plating preventing member is made of a hydrolyzable polymer material, and the removing solution is made of any one of an alkaline solution and an acid solution.

Wherein the hydrolyzable polymer material is made of polylactic acid resin.

On the other hand, the alkaline solution consists of at least one of sodium hydroxide solution or potassium hydroxide solution.

In addition, the plating process uses any one or more of electroplating or metalizing (Metallizing).

According to the present invention having the above-described configuration, since the wiring pattern portion for driving the backlight is formed on the frame, the wiring pattern portion formed on the frame does not need to have a separate electrode plate and fixing means, and thus serves as an electrical wiring. By replacing the simplification and manufacturing costs can be reduced.

In addition, the present invention can achieve the effect of reducing the manufacturing time and manufacturing cost by enabling the automation of the process of forming the wiring pattern portion in the frame.

In addition, the present invention can provide an auxiliary connection member for auxiliary connection and support of the electrode of the backlight connected and supported by the connection member to enable a stable connection, it can exhibit the effect of reducing the connection failure.

In addition, after the plating prevention member is plated the injection molded frame, the plating prevention member is removed by immersing in the removal liquid reacting with the plating prevention member, so that the plating process can be automated, and the manufacturing process of the product The effect can be simplified.

In addition, when the plating prevention member is formed in the non-plating treatment part of the frame, injection molding is performed in a pre-fabricated mold frame, and the boundary between the plated part of the wiring pattern part and the non-plating treatment part is clearly distinguished, thereby preventing short circuit. have.

Hereinafter, the configuration of the present invention will be described with reference to the accompanying drawings.

Prior to this, terms used in the present specification and claims should not be construed in a dictionary sense, and the inventors may properly define the concept of terms in order to explain their invention in the best way. It should be construed as meaning and concept consistent with the technical spirit of the present invention.

Therefore, the configuration shown in the embodiments and drawings described herein are only preferred embodiments of the present invention, and do not represent all of the technical spirit of the present invention, various equivalents that may be substituted for them at the time of the present application It is to be understood that variations may exist.

1 is an exploded perspective view illustrating a state in which a backlight fixing frame of a liquid crystal display according to the present invention is coupled to a liquid crystal display, and FIG. 2 is a plan view illustrating a backlight fixing frame of the liquid crystal display according to the present invention.

3 is an exploded perspective view illustrating a coupling member coupled to a backlight fixing frame of the LCD according to the present invention, and FIG. 4 is a view illustrating a connection member of the backlight fixing frame of the LCD according to the present invention. 5 is a perspective view illustrating another embodiment, and FIG. 5 is a perspective view illustrating a state in which a backlight is fixed to a connection member of a backlight fixing frame of a liquid crystal display according to the present invention.

1 to 5, the backlight fixing frame 100 of the liquid crystal display device 300 according to the present invention is a backlight fixing frame of a liquid crystal display device (LCD). A frame 100 on which an applied power terminal unit 60 is formed; One or more connection members 40 to which the + electrode 202 or the-electrode 204 of the backlight 200 are connected and supported, and a wiring pattern formed in the frame such that the connection member 40 and the power supply terminal are electrically connected to each other. It includes a portion 10, the frame 100 is formed in the access groove to correspond to the bottom portion of the connection member 40, the connection member 40 is configured to be detachable from the access groove of the frame The wiring pattern portion 10 is formed by plating.

On the other hand, the manufacturing method of the backlight fixing frame 100 of the liquid crystal display device according to the present invention, the frame forming step (S10) for injection molding the frame 100, the power terminal portion 60 is formed using the first mold; Plating prevention member which injects and forms a plating prevention member into the holding part 46 of the connection member 40 and the non-plating process part 20 of the wiring pattern part 10 of the said frame 100 using a 2nd mold frame. Forming step (S20); Plating process (S30) for plating the frame 100 and the connecting member 40, the plating prevention member is injection molded; A plating preventing member removing step (S40) of removing the plating preventing member by immersing the plated frame 100 and the connecting member 40 in the removing liquid reacting with the plating preventing member; And a connection member coupling process (S50) for coupling the partially plated connection member 40 to the frame 100.

Hereinafter, each component of the present invention will be described.

Prior to the description of the components of the present invention, the backlight 200 coupled to the backlight fixing frame 100 of the LCD will be described.

The backlight 200 is a fluorescent lamp that is turned on at a low temperature without heating the filament, and the positive electrode 202 and the negative electrode 204 are formed at both ends of the closed glass tube, and have a “U” shape or a “one” shape. ) ”Shape may be used, but in the embodiment of the present invention, a“ 200 ”shape backlight 200 is used.

In addition, the inside of the glass tube of the backlight 200 is filled with a certain amount of a mixed gas of mercury, argon, neon, etc., the inner surface of the glass tube has the same structure and principle as a general fluorescent lamp coated with a phosphor.

As a light source of the backlight 200, EL, LED, CCFL, HCFL, etc. may be used, but preferably, a CCFL, that is, a cold cathode fluorescent lamp (Cold Cathode Fluorescent Lamp), which has a long life, low power consumption, and can be formed thinly. use.

Here, the electrode 210 is connected to the wiring pattern portion 10 of the frame 100 through the connection member 40 and the auxiliary connection member 30 which will be described later to receive power.

The frame 100 for fixing the backlight 200 of the liquid crystal display according to the present invention includes a frame 100, a power terminal 60, a connection member 40, an auxiliary connection member 30, a wiring pattern part 10, and the like. It includes.

The frame 100 is installed at one side of the liquid crystal display to fix and support the components.

The frame 100 is provided with a power supply terminal 60 including a + power terminal 62 and a -power terminal 64 for receiving power from an external backlight controller (not shown) on one side.

Meanwhile, the material of the frame 100 may include inorganic materials such as ceramics and glass, in addition to synthetic resins such as thermoplastic resins and thermosetting resins. Preferably, the heat resistance and thermal swelling coefficient are close to metals over a wide temperature range. A polyester-based liquid crystal polymer having an elasticity almost equivalent to that of the metal film is used.

As described above, the frame 100 connects and supports the plurality of backlights 200 so that light generated from the backlights 200 is effectively irradiated to the liquid crystal display, and is preferably shown in FIG. 1. It is mounted on one end of the panel of the liquid crystal display device provided in a quadrangular shape, has a "one" shape, and is formed by injection molding by a first mold.

Of course, the shape of the frame 100 is not necessarily limited to a “one” shape, and may be variously modified according to the shape of one end of the panel of the liquid crystal display device.

That is, when the LCD is circular, the frame 100 may be provided in the shape of an arc.

Meanwhile, at least one connection member 40 is provided in the frame 100 to connect and support the + electrode 202 and the-electrode 204 of at least one backlight 200, and for this purpose, one backlight 200 is provided. A pair of connecting members 40 are provided to correspond to the + electrode 202 and the-electrode 204 of FIG.

That is, the pair of connection members 40 serve to supply power to the backlight 200 by connecting and supporting the + electrode 202 or the-electrode 204 of one backlight 200, respectively.

Here, the connection member 40 is provided separately and detachably provided in the access groove 102 of the frame 100.

To this end, the connection member 40, the upper portion is opened and the lower portion is made of a closed rectangular shape, the first side portion 42 is connected to the electrode of the backlight 200 is fixed to one side is formed On the other side, a second inserting portion 44 in which the main body of the backlight 200 is located is formed.

In addition, a grip portion 46 for supporting a main body of the backlight 200 inserted into the second inserting portion 44 to prevent flow is provided at the central portion of the inner bottom surface.

Here, the first insertion portion 42 of the connection member 40 is provided with a connection port 48 for connecting and supporting the electrode of the backlight 200.

In addition, the gripping portion 46 and the connection port 48 is preferably fitted to support the electrode of the backlight 200 and the backlight 200 formed in the shape of a rod.

In addition, the connection member 40 is plated by the plating process of the present invention except for the gripping portion 46, and is electrically connected to the wiring pattern portion 10 of the frame to be described later.

Alternatively, as shown in FIG. 4, it may be configured to simply support the backlight without an integral plating pattern formed on the connection member 40.

Thus, the process for forming the wiring pattern may be performed only for the frame 100, and the connection member 40 may be configured to support the backlight without performing a separate pattern forming process.

In this case, the frame 100 may be further provided with an auxiliary connection member 30 for auxiliary connection and support of the electrode of each backlight 200 connected to and supported by each connection member 40.

Here, the auxiliary connection member 30 is provided in the same shape and function as the connection port 48 of the connection member 42, but is not necessarily limited to this configuration if the electrode of the backlight 200 can be connected and supported. no.

The auxiliary connection member 30 is plated by the plating process of the present invention similarly to the connection port 48 of the connection member 42, and eventually is electrically connected to the wiring pattern portion 10 of the frame to be described later.

Accordingly, since the connecting member 40 and the auxiliary connecting member 30 connect the electrodes 202 and 204 of the backlight 200 to each other, the connection rate 40 can be reduced.

On the other hand, the connecting member 40 and the auxiliary connecting member 30 is connected to the + power terminal 62 and the-power terminal 64 provided on one side of the frame 100, the backlight ( The wiring pattern part 10 for driving the 200 is plated.

Accordingly, when power is applied to the + power terminal 62 and the −power terminal 64 of the frame 100 on which the wiring pattern unit 10 is plated from an external backlight 200 lighting controller (not shown), Power is supplied to the backlight 200 through the connection member 40 and the auxiliary connection member 30 formed in the frame 100.

Here, the wiring pattern part 10 electrically connects at least one connection member 40 and the auxiliary connection member 30 fixed to the frame 100 with the + power terminal 62 and the -power terminal 64, respectively. Circuitry is to be patterned.

As a result, the + electrode 202 and the-electrode 204 of each backlight 200 are respectively connected to the pair of connecting members 40 with corresponding polarities, and the pair of connecting members 40 are connected to the wiring pattern. The unit 10 is connected to the + power terminal 62 and the-power terminal 64 having a corresponding polarity, respectively, to receive power from the lighting controller of the external backlight 200 controller.

On the other hand, the manufacturing process of the frame 100 for fixing the backlight 200 of the liquid crystal display according to the present invention configured as described above is as follows.

First, the frame forming process (S10) refers to a process of injection molding the frame 100 in the first mold, and the connection member 40 is also injection-molded in a separate first mold.

In addition, the plating preventing member forming process (S20) is a process of forming a non-plating preventing member (not shown) in the non-plating processing unit 20 and the holding portion 46 of the contact portion of the frame 100.

The plating prevention member is plated only on the wiring pattern part 10 of the frame 100, and the non-plating treatment part 20 to which the plating prevention member is coupled is not plated.

In addition, the non-plating processing unit 20 serves to distinguish the + and-poles of the wiring pattern unit 10 by the plating preventing member.

Similarly, only the gripping portion 46 of the connection member 40 is prevented from being plated by the plating preventing member, and the remaining portions are plated.

When the plating preventing member is described in more detail the process coupled to the frame 100 and the connection member 40 as follows.

First, a molding groove having a shape corresponding to the plating preventing member is additionally formed in a molding groove having the same shape as the frame 100 in a second mold frame (not shown) in which the plating preventing member is formed.

Accordingly, when the frame 100 is seated in the molding groove of the second mold frame, a space in which the raw material of the plating preventing member is introduced is provided at a portion where the plating preventing member is to be additionally formed.

Here, the space (not shown) in which the plating preventing member formed in the second mold is formed is connected to an injection hole (not shown) formed in the second mold, and raw materials of the plating preventing member are injected into the molten state through the injection hole. Injection molding is coupled to the frame 100 at the same time.

Here, a piston (not shown) may be used to inject the plating preventing member into the plating preventing member forming space through the injection hole.

The piston is provided with an inlet through which a raw material of the plating preventing member is introduced in powder form on one side thereof, and a heating chamber for heating the piston by electrothermal and high pressure steam is provided at the upper and lower parts thereof.

Accordingly, when the raw material of the plating prevention member in the form of powder is introduced into the piston inlet, the plating prevention member introduced into the piston by the heating chamber is heated to become molten, and the screw inside the piston is rotated to plate the molten plating. The raw material of the prevention member is injected into the inlet of the second mold.

Subsequently, the raw material of the plating preventing member in the molten state injected into the injection hole of the second mold by the piston is injection-molded into the space for forming the plating preventing member of the second mold through the injection tube.

Accordingly, when a predetermined time elapses after the raw material of the plating prevention member flows into the plating prevention member forming space of the second mold frame, the plating prevention member is hardened on the surface of the non-plating treatment part 20 of the frame 100. do.

Subsequently, the upper mold frame and the lower mold frame of the second mold frame are separated, and the plating preventing member is integrally injection molded in the mold to draw out the rigid frame 100.

In addition, the connection member 40 is formed with a plating preventing member in the same manner as described above.

Wherein the anti-plating member is made of a water-soluble or hydrolyzable polymer material, which will be described in detail in the anti-plating member removal process (S40) to be described later.

The plating process (S30) is a process of plating the frame 100 and the connection member 40, the injection prevention member is formed.

Electroplating or metallizing may be used as the plating method of the present invention. In addition, various known plating methods may be used.

Here, electroplating refers to a method of covering the surface of an object with a thin film of another metal using the principle of electrolysis.

In addition, metalizing is also referred to as metal spraying and refers to a method of plating metal by spraying metal on the surface of an object.

The metal used for the plating may include silver, gold, copper, nickel, and the like, and various metals may be used.

In addition, the plating process (S30) can be performed by dividing a plurality of circuits, it can also be carried out at once.

Meanwhile, the plating preventing member removing process S40 is performed by immersing and melting the frame 100 and the connecting member 40 plated in the plating process S30 in a removal liquid chemically reacted with the plating preventing member. It is a process of removing.

Here, when the plating prevention member is made of a water-soluble polymer material such as polyvinyl alcohol (PVA), it is preferable to immerse and remove for 2 to 35 hours in hot water of about 25 ~ 95 ℃.

In addition, when the plating preventing member is a hydrolyzable polymer, such as polylactic acid resin, it is preferable to immerse and remove for 1 to 120 minutes in an alkali (NaOH, KOH, etc.) aqueous solution of about 25 ~ 70 ℃ temperature.

In addition, the connection member coupling step (S50) is a process of coupling the connection member (S40) and the frame 100, the partial plating is completed.

That is, the partially plated connection member 40 is coupled to the frame 100 on which the wiring pattern portion 10 is formed by fitting and the like, and the wiring pattern portion 10 is connected to the backlight coupled to the connection member 40. The power supplied can be applied.

5 is a flowchart illustrating a plating method of the frame 100 for fixing the backlight 200 of the liquid crystal display according to the present invention.

An embodiment of the plating method of the frame 100 for fixing the backlight 200 of the liquid crystal display device according to the present invention configured as described above will be described with reference to FIG. 5.

First, the frame 100 and the connection member 40 injection-molded in the first mold frame are respectively provided (S10), and then, when the frame 100 and the connection member are placed in the molding grooves of the second mold frame, respectively, The raw material of the molten plating preventing member is injected into the injection hole of the mold by using a piston.

Accordingly, the raw material of the plating preventing member is injected into the plating preventing member forming space (not shown) of the second mold frame so that the wiring pattern portion 10 and the plating preventing member of the frame 100 are integrally formed by injection molding. Except for the gripping portion 46 of the portion and the plating preventing member is integrally formed (S20).

Subsequently, the injection molded frame 100 and the connecting member 40 are drawn out of the second mold, and the extracted frame 100 is plated by an electroplating or metallizing method (S30). ).

In addition, when the plating is completed, the plating prevention member is removed by immersing and melting the plating prevention member of the frame 100 and the connection member 40 in the removal solution reacting with the plating prevention member (S40).

As a result, after the wiring pattern part 10 is plated on the frame 100, the plating preventing member is decomposed by the removal liquid, so that the unplated non-plating part 20 is exposed to the surface, thereby partially plating.

Similarly, after the connecting member 40 is plated, the anti-plating member is decomposed by the removal liquid, whereby the unplated gripping portion 46 is exposed to the surface to complete the partial plating.

In addition, the one or more connection members 40 and the auxiliary connection members 30 in the frame 100 are electrically connected to the + power supply terminal 62 and the + power supply terminal 64 by the wiring pattern part 10, respectively. .

When the frame 100 and the connection member 40 are partially plated as described above, the manufacturing process of the frame is completed by coupling the plurality of partially plated connection members 40 to the frame 100 (S50).

As mentioned above, although the present invention has been described by way of limited embodiments and drawings, the technical idea of the present invention is not limited thereto, and a person having ordinary skill in the art to which the present invention pertains, Various modifications and variations may be made without departing from the scope of the appended claims.

Since the accompanying drawings are for understanding the technical spirit of the present invention together with the detailed description of the following invention, the present invention should not be construed as limited to the matters shown in the following drawings.

1 is an exploded perspective view showing a state in which a backlight fixing frame of a liquid crystal display according to the present invention is coupled to a liquid crystal display.

2 is a plan view showing a backlight fixing frame of the liquid crystal display according to the present invention.

Figure 3 is an exploded perspective view showing a state in which the connecting member is coupled to the backlight fixing frame of the liquid crystal display according to the present invention.

4 is a perspective view showing still another embodiment of a connecting member of a frame for fixing a backlight of a liquid crystal display according to the present invention;

5 is a perspective view showing a state in which the backlight is fixed to the connection member of the backlight fixing frame of the liquid crystal display according to the present invention.

6 is a flowchart illustrating a method of manufacturing a frame for fixing a backlight of a liquid crystal display according to the present invention.

* Description of the symbols for the main parts of the drawings *

100: frame 102: access groove

10: wiring pattern portion 20: non-plating processing portion

30: auxiliary connecting member 40: connecting member

42: first insertion unit 44: second insertion unit

46: grip portion 48: connection port

60: power supply terminal 62: + power supply terminal

64: power supply terminal 200: backlight

202: + electrode 204: -electrode

300: liquid crystal display device

Claims (12)

As a frame for fixing a backlight of a liquid crystal display (LCD), A frame formed with a power terminal configured to receive power from the outside on one side; At least one connecting member to which the + and-electrodes of the backlight are connected and supported; And And a wiring pattern portion formed on the frame such that the connection member and the power terminal are electrically connected to each other. The frame has an access groove formed to correspond to the bottom portion of the connection member, the connection member is configured to be detachable from the access groove of the frame, And the wiring pattern portion is plated to fix the backlight of the liquid crystal display device. The method of claim 1, And the frame further includes an auxiliary connecting member for auxiliary connecting and supporting an electrode of each backlight connected to and supported by each connecting member. The method according to claim 1 or 2, And the connection member includes a gripping portion for supporting the backlight body and a connection opening for supporting the backlight electrode. The method of claim 3, wherein Frame for fixing a backlight of the liquid crystal display device, characterized in that configured to simply support the backlight simply without forming any plating pattern on the connection member (40). The method of claim 3, wherein The frame for fixing a backlight of the liquid crystal display device, characterized in that all the remaining portions of the connection member except for the gripping portion are plated. As a method of manufacturing a frame for fixing a backlight of a liquid crystal display device, A frame forming step of injection molding each of the frame and the connection member on which the power terminal portion is formed by using the first mold frame; A plating preventing member forming step of injection-molding a plating preventing member on the holding portion of the connection member and the non-plating treatment portion of the wiring pattern portion of the frame by using a second mold; A plating step of plating the frame and the connection member 40 on which the plating prevention member is injection molded; A plating preventing member removing step of removing the plating preventing member by immersing the plated frame and the connecting member 40 in the removing liquid reacting with the plating preventing member; And And a connecting member joining step of joining the partially plated connecting member to the frame. The method of claim 6, The plating preventing member is made of a water-soluble polymer material, the removal liquid is a manufacturing method of the backlight fixing frame of the liquid crystal display device, characterized in that made of water. The method of claim 7, wherein The water-soluble polymer material is a polyvinyl alcohol (PVA) manufacturing method of the frame for fixing the backlight of the liquid crystal display device. The method of claim 7, wherein The plating preventing member is made of a hydrolyzable polymer material, and the removing solution is made of any one of an alkaline solution or an acid solution. The method of claim 9, The hydrolyzable polymer material is a manufacturing method of the frame for fixing the backlight of the liquid crystal display device, characterized in that made of polylactic acid resin. The method of claim 9, The alkaline solution is a method of manufacturing a frame for fixing a backlight of the liquid crystal display device, characterized in that consisting of at least one of sodium hydroxide solution or potassium hydroxide solution. The method of claim 6, The plating process is a method of manufacturing a frame for fixing a backlight of the liquid crystal display device, characterized in that using any one or more of electroplating or metalizing (Metallizing).

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