KR100741953B1 - Fluorescent lamp for backlight with electrode formed by electroless plating and method for forming electrode part thereof - Google Patents

Abstract

The present invention includes a lamp tube and an electrode portion having at least one end of the lamp tube being electroless plated to seal the inside of the lamp tube, so that the glass can be removed without any difficult process such as bonding of electrodes or inserting an electrode into the lamp tube. Both ends of the lamp tube made of material can be easily electroless plated to form electrodes, and the combination of electroless plating and soldering can reduce manufacturing cost and manufacturing time, making it easy to mass-produce backlight fluorescent lamps and their fluorescent lamps. It provides a method for forming an electrode portion.

In addition, the present invention includes a glass substrate, a pair of electrodes electrolessly plated and formed on one surface of the glass substrate, and a conductor electrically connecting the pair of electrodes, thereby simplifying the manufacturing process and lowering the manufacturing cost. In addition, it provides a fluorescent lamp for backlight which can realize the thinning of the product by simplifying the internal configuration.

Electroless, Plating, Cap, Fluorescent, Glass, Solder, Electrode, Backlight.

Description

Fluorescent lamp for backlight with electrode formed by electroless plating and method for forming electrode part according to electroless plating

1 is an exploded perspective view illustrating a general display device.

2 is a cross-sectional view of a conventional flat fluorescent lamp.

Figure 3 is a cross-sectional view showing an embodiment of the electrode portion formed on one end of the fluorescent lamp according to the present invention.

Figure 4 is a cross-sectional view showing another embodiment of the electrode portion formed on one end of the fluorescent lamp according to the present invention.

Figure 5 is a cross-sectional view showing another embodiment of the electrode portion formed on one end of the fluorescent lamp according to the present invention.

6 is a sectional view of a glass substrate of a flat fluorescent lamp according to the present invention.

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

100: fluorescent lamp

110: lamp tube

120: electrode part

122: plating layer

124 cap

126: soldering part

The present invention relates to a fluorescent lamp for backlight, and more particularly to a backlight fluorescent lamp in which an electrode by electroless plating with electroless plating is formed to form electrodes on both ends of a fluorescent lamp lamp tube made of non-conductive glass. And a method for forming an electrode portion of the fluorescent lamp.

In general, a flat panel display is classified into a light emitting type and a light receiving type, and a light emitting type includes a cathode ray tube, an electroluminescent (EL) element, a plasma display panel (PDP), and the like. The light receiving type includes a liquid crystal display (LCD) and the like.

The light-receiving display device itself emits light and does not form an image, but receives light from the outside to form an image, so that a separate light source, for example, a backlight, may be installed to observe the image.

Fluorescent lamps used in the backlight include cold cathode fluorescent lamps (CCFLs) having electrodes at both ends, and external electrode fluorescent lamps (EEFL) and electrodes having electrodes at both ends of the tube. And an electrodeless fluorescent lamp that does not form a light source.

1 is an exploded perspective view illustrating a general display device.

In general, the liquid crystal display device is configured to emit light by arranging a plurality of fluorescent lamps 10 on the rear of the liquid crystal display panel 20 so that users can identify an image appearing on the display panel 20.

Electrodes 12 are formed at both ends of the fluorescent lamp 10 so that the fluorescent material painted inside the lamp tube can be discharged to emit light by applying voltage, and the electrodes are connected to the power supply block of the display device. Assembled and arranged.

However, although the electrode is manufactured by various methods according to the above-described cold cathode fluorescent lamp (CCFL) or external electrode fluorescent lamp (EEFL) method, the lamp tube of the fluorescent lamp is made of a glass material having poor coupling with metal. Since the process is difficult and mass production is not easy, there is a problem in that it does not satisfy the demand for manufacturing a liquid crystal display device which has a lot of demand in recent years.

In addition, the fluorescent lamp for backlight and the electrode portion forming method of the electrode formed by the electroless plating according to the present invention can be applied to a flat fluorescent lamp (FFL) and a manufacturing method thereof.

The main field of use of flat fluorescent lamps (FFL) is the back light source of liquid crystal display (LCD). In general, a liquid crystal display (LCD) is classified into a non-light emitting type, a reflection type using ambient light and a transmission type using a rear light source, and a transmissive liquid crystal display device as a rear light source, depending on the purpose of use. Or distributed EL or the like is selectively used. However, the conventional rear light source such as the cold cathode fluorescent lamp and the distributed EL has a low luminance and a narrow viewing angle.

Therefore, in recent years, there has been an attempt to apply a flat fluorescent lamp as a back light source, because the flat fluorescent lamp has the characteristics of high brightness, high uniformity and long life. As a result, the planar fluorescent lamp is expected to be greatly expected as a rear light source of the next generation liquid crystal display.

Hereinafter, a conventional flat fluorescent lamp will be described with reference to the accompanying drawings.

2 is a cross-sectional view of a conventional flat fluorescent lamp.

As shown in FIG. 2, the conventional flat fluorescent lamp includes a front glass substrate 30 and a rear glass substrate 40 which are disposed in parallel to be spaced at a predetermined interval and are coupled to both ends of the support 50, respectively. It is composed. Fluorescent materials are provided between the glass substrates 30 and 40, and electrodes are formed on the outer surfaces of the glass substrates 30 and 40 so that power can be applied.

In this case, in order to form electrodes on the outer surfaces of the glass substrates 30 and 40, a conductor 60, such as an electric wire or a metal material, is provided on the upper surfaces of the glass substrates 30 and 40, and conductive materials are formed by using a double-sided tape 70. After attaching the tin plates 32 and 42 to both ends of the sieve 60, the tin plates 32 and 42 are soldered. After the soldering of the tin plates 32 and 42 is completed, the user further forms an electrode having a desired configuration using a conductive material such as gold (Au) or silver (Ag).

In the conventional flat fluorescent lamp in which the electrode is formed as described above, a step of attaching the double-sided tape 70 to the size of the tin plates 32 and 42 and attaching the tin plates 32 and 42 to the glass substrates 30 and 40 is performed. Since it is manufactured through a process, a soldering process of the tin plates 32, 42, etc., there is a disadvantage in that the manufacturing method and configuration are complicated and the manufacturing cost is high.

The present invention has been made to solve the above-described problems, it is possible to form an electrode by simply electroless plating both ends of the lamp tube made of a glass material without a separate, difficult process such as electrode bonding or electrode insertion in the lamp tube An object of the present invention is to provide a fluorescent lamp and a method of forming an electrode portion of the fluorescent lamp.

In addition, another object of the present invention is to provide a fluorescent lamp and a method of forming the electrode portion of the fluorescent lamp is easy to mass production by using a combination of electroless plating and soldering operation to reduce the manufacturing cost and manufacturing time.

In addition, another object of the present invention is to provide a flat fluorescent lamp for forming an electrode using electroless plating and a method of manufacturing the same.

In addition, the method of forming the electrode portion of the flat fluorescent lamp according to the present invention includes the step of electroless plating on a flat glass substrate. In this case, the electroless plating on the glass substrate includes electroless plating on two or more points of the glass substrate and connecting two or more electroless plating portions with a conductor.

In addition, the object of the present invention is not limited to the above-mentioned object, other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a fluorescent lamp in which an electrode by electroless plating is formed includes an electrode part having a lamp tube and a plating layer at least one end of the lamp tube being electroless plated to seal the inside of the lamp tube. Include.

The electrode part includes a cap provided between the plating layer and the lamp tube and coupled to cover at least one end of the lamp tube, and further includes a soldering part formed by soldering on an outer surface of the plating layer.

In addition, the fluorescent lamp in which the electrode by the electroless plating according to the present invention is formed is provided between the first glass substrate and the second glass substrate, the first glass substrate and the second glass substrate which are arranged in parallel to be spaced apart at a predetermined interval. And a first electrode and a second electrode formed on the outer surface of the first glass substrate and the second glass substrate by being electroplated with a fluorescent material.

Two or more first and second electrodes are each provided, and two or more first electrodes are electrically connected by a conductor provided on an outer surface of the first glass substrate, and the two or more second electrodes are formed on the second glass substrate. It is electrically connected by a conductor provided on the outer surface.

On the other hand, the electrode portion forming method by electroless plating is characterized in that it comprises the step of electroless plating at least one end of the lamp tube in the method of forming the electrode portion of the fluorescent lamp.

Coupling a cap covering at least one end of the lamp tube before the electroless plating step, and further including soldering onto the plating layer formed by the step after the electroless plating step.

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

Electroless plating is also referred to as chemical plating or autocatalyst plating, and a reducing agent such as formaldehyde or hydride in an aqueous solution is supplied by supplying electrons to reduce metal ions to metal molecules. At this time, the reaction takes place on the surface of the catalyst, and the most commercially available plating agents include copper, nickel-phosphorus, nickel-boron alloys, and the like.

Electroless plating has the advantage that the plating layer is dense and uniform thickness of about 25㎛ compared to the electroplating, and can be applied to various base materials such as glass or plastic or organic as well as conductor.

Figure 3 is a cross-sectional view showing an embodiment of the electrode portion formed on one end of the fluorescent lamp according to the present invention.

Electrode portion 120 of the fluorescent lamp 100 according to the present invention is made by an electroless plating method of immersing at least one end of the lamp tube 110, preferably both ends in an aqueous solution for plating.

Therefore, the fluorescent lamp 100 according to the present invention is a glass tube of a fluorescent material coated with a fluorescent material therein, and at least one end of the lamp tube 110 is preferably electroless plated at least one end of the lamp tube ( 110, the electrode portion 120 having a plating layer 122 for sealing the inside is characterized in that it comprises a.

The diameter of the lamp tube 110 that is commonly used is made of a thin diameter tube of about 3mm or less. The film thickness of the plating layer 122 formed on the lamp tube 110 by the electroless plating method becomes thicker as the plating time elapses. In the present invention, the inside of the lamp tube 110 is completely blocked so that the lamp tube 110 is completely blocked. Electroless plating is performed until both ends are sealed.

When a voltage is applied to the electrode unit 120 formed as described above, the fluorescent material coated inside the lamp tube 110 emits light by emitting light.

Figure 4 is a cross-sectional view showing another embodiment of the electrode portion formed on one end of the fluorescent lamp according to the present invention.

Electrode 120 by the electroless plating shown in FIG. 4 should be plated until both ends of the lamp tube 110 is completely blocked and sealed to form the plating layer 122 correctly, the electrode portion 120 further includes a cap 124 provided between the plating layer 122 and the lamp tube 110 so as to cover at least one end of the lamp tube 110 to reduce the formation time and increase the reliability of the sealing portion.

The cap 124 is preferably made of a metal material so as to be integral with the electrode portion 120 to have electrical conductivity, and may be formed in a cap shape covering at least one outer circumferential surface of the lamp tube 110. Or may be formed in a plug shape inserted into at least one inner surface.

Figure 5 is a cross-sectional view showing another embodiment of the electrode portion formed on one end of the fluorescent lamp according to the present invention.

As another embodiment for reducing the electrode 120 formation time by the electroless plating, in the present invention, the electroless plating is completed before the end of the lamp tube 110 is blocked, the outer surface of the plating layer 122 is relatively It is also possible to perform the soldering operation made in a short time so that the end of the lamp tube 110 is sealed.

The electrode part 120 formed as described above further includes a soldering part 126 formed by soldering on an outer surface of the plating layer 122 formed by electroless plating, and the soldering operation as described above is glass. It is preferable to use a known ultrasonic soldering device so that a part of the lamp tube 110 may be soldered together. In addition, the soldering portion 126 is preferably formed using a lead-free solder.

On the other hand, the method of forming the electrode portion 120 of the fluorescent lamp 100 for the backlight of the display device according to the present invention comprises the steps of electroless plating at least one end of the lamp tube 110 coated with a fluorescent material therein; It is characterized by including.

In this case, as in the embodiment of FIG. 4, the method may further include coupling a cap 124 covering at least one end of the lamp tube 110 before the electroless plating. Also, as in the embodiment of FIG. After the plating step, the method may further include soldering on the plating layer 122 formed by the step.

6 is a sectional view of a glass substrate of a flat fluorescent lamp according to the present invention.

The fluorescent lamp according to the present invention may also be implemented as a flat type fluorescent lamp, wherein the fluorescent lamp for backlight according to the present invention is arranged in parallel to be spaced at a predetermined interval, as shown in Figure 6 by the support 300 The first glass substrate 210 and the second glass substrate 220 to be coupled, and the first electrode 212 formed on the outer surface of the first glass substrate 210 and the second glass substrate 220 by electroless plating, respectively And a second electrode 222. In this case, the process of electroless plating on the first glass substrate 210 and the second glass substrate 220 is the same as the electroless plating process of the embodiment shown in Figures 3 to 5, a detailed description thereof will be omitted. .

Phosphors are provided between the first glass substrate 210 and the second glass substrate 220, and light is emitted from the phosphor when power having different polarities is applied to the first electrode 212 and the second electrode 222. .

In addition, two first and second electrodes 212 and 222 may be provided on the outer surfaces of the first and second glass substrates 210 and 220, respectively. 1 is electrically connected by a conductor 400 provided on the outer surface of the glass substrate 210, and the two second electrodes 222 are provided on the outer surface of the second glass substrate 220. Is electrically connected by The manufacturer mounts the conductor 400 on the outer surfaces of the first glass substrate 210 and the second glass substrate 220 having a flat plate shape, and then electroless-plats both ends of the conductor 400 in one step. As a result, electrodes may be formed on the first glass substrate 210 and the second glass substrate 220.

In the embodiment shown in FIG. 6, two first electrodes 212 and two second electrodes 222 are provided on the outer surfaces of the first glass substrate 210 and the second glass substrate 220, respectively. The number of the 212 and the second electrode 222 is not limited thereto and may be changed according to a user's selection of one or three or more.

When two or more first and second electrodes 212 and 222 are provided, the electrodes 212 and 222 are electrically connected by the conductor 400, so that only one of the first electrodes 212 is supplied with power. Power is applied to all of the first electrodes 212 even when the power is applied, and power is applied to all of the second electrodes 222 even if power is supplied only to any one of the second electrodes 222.

As described above, in the case of forming the electrode by the electroless plating method according to the present invention, since the electrode can be directly formed on the glass substrate 200 without the tin plate 60 or the double-sided tape 70, the manufacturing process is simplified. And lower manufacturing costs. In addition, when the electrode is formed by the electroless plating method according to the present invention, since the internal configuration is simplified, there is an advantage that the thinning of the product can be realized.

In the present embodiment, the electrode is formed on the glass substrates 210 and 220 formed in the shape of a plate, but the electrode is formed by the electroless plating method according to the present invention. It can be applied to fluorescent lamps of various shapes as well as lamps.

As mentioned above, although this invention was demonstrated in detail through the preferable Example, the scope of the present invention is not limited to a specific Example, Comprising: It should be interpreted by the attached Claim. In addition, those skilled in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

The fluorescent lamp for backlight and the method of forming the electrode portion of the fluorescent lamp in which the electrode is formed by the electroless plating according to the present invention are both ends of the lamp tube made of glass material without any difficult separate process such as electrode bonding or electrode insertion into the lamp tube. The electrode can be easily formed by electroless plating, and the production cost and manufacturing time can be shortened by mixing electroless plating and soldering, thereby facilitating mass production.

In addition, the fluorescent lamp for backlight in which the electrode is formed by electroless plating according to the present invention has advantages in that the manufacturing process can be simplified and the manufacturing cost can be reduced, and the internal structure can be simplified to thin the product.

Claims (10)

delete A lamp tube of at least one end of which is open; And An electrode part configured to include a cap coupled to cover an open portion of the lamp tube and a plating layer formed on a portion covered with the cap by an electroless plating method; Fluorescent lamp comprising a. The method according to claim 2, The electrode unit further comprises a soldering portion formed by soldering on the outer surface of the plating layer. delete In the method of forming the electrode portion of the fluorescent lamp by electroless plating, Providing a tubular lamp tube having at least one open end; Engaging a cap to cover an open portion of the lamp tube; Electroless plating the portion where the cap is coupled to seal the inside of the lamp tube; Electrode portion forming method of a fluorescent lamp comprising a. The method according to claim 5, And soldering onto the plating layer formed by the step after the step of electroless plating. delete delete delete delete

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