KR100929544B1 - Surface light source device comprising an aluminum electrode and a method of manufacturing the same - Google Patents

Abstract

Disclosed are a surface light source device including an aluminum electrode and a method of manufacturing the same. According to the present invention, by forming the electrode using aluminum, it is possible to reduce the cost of manufacturing a conventional metal paste, and there is no need to make a dielectric, a protective film, etc. separately by utilizing an alumina anodized aluminum. The process can be simplified. The surface light source device according to the present invention includes an upper substrate and a lower substrate covering the at least one unit discharge cell up and down, and a discharge electrode inserted between the upper substrate and the lower substrate to generate an electric field in the discharge space. The discharge electrode may include an electrode layer made of aluminum and a dielectric layer formed by anodizing the aluminum on the outside of the electrode layer.

Description

A surface light source device including an aluminum electrode, and a method of manufacturing the same {FLAT PANEL DISPLAY HAVING ELECTRODE MADE OF ALUMINUM AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a surface light source device using aluminum as an electrode and a method for manufacturing the same. More particularly, by forming an electrode using aluminum, it is possible to reduce the cost of manufacturing a conventional metal paste, The present invention relates to a surface light source device capable of simplifying the process because it is not necessary to make a dielectric, a protective film, etc. separately by utilizing anodized alumina, and a manufacturing method thereof.

A flat panel display (FPD) refers to a flat and thin display having a thickness of several centimeters (cm) and a few millimeters (mm), which corresponds to a quarter or less of the screen diagonal length. The cathode ray tube (CRT), which has the longest history among displays, is increasingly being replaced by flat panel displays which are relatively thin, light and low in power consumption due to their bulky and high power consumption.

Such a flat panel display is classified into a non-emissive type that requires a light source separately from an emissive type that can emit light by itself. The light emitting type includes a plasma display panel (PDP), an organic light emitting display (OLED), a field emission display (FED), and the light receiving type includes a liquid crystal display (LCD). LCDs belonging to the light-receiving type cannot display an image without an external light source, and therefore, a back light unit (BLU), which is a separate light source, is necessary. These BLUs have a cold cathode fluorescent lamp (CCFL) method in which ultraviolet rays emitted from mercury gas excited by electrons emitted by a high voltage electric field collide with phosphors to generate visible light, and electric luminescence generated when a voltage is applied to a semiconductor. Light sources such as an LED (light emitting device) method using a phenomenon and a flat fluorescent lamp (FFL) method for emitting light by diffusing light by ultraviolet rays generated from gas discharge are widely used.

Among them, the FFL method is a surface light source method. Compared to the CCFL method, which is a conventional light source method, only one lamp is used, which greatly reduces the number of components and enables automation of the manufacturing process of the BLU and LCD panels. It is attracting attention because it is advantageous to adopt a large LCD.

1 is a view showing an example of a surface light source device 100 according to the prior art. Specifically, FIG. 1A is a plan view showing the entire configuration of the surface light source device 100, and FIG. 1B is a cross-sectional view taken along the line AA ′ of FIG. 1A.

Referring to FIGS. 1A and 1B, the surface light source device 100 may support the upper substrate 101, the lower substrate 102, and the upper and lower substrates spaced apart from each other to form a unit discharge cell space. An encapsulant 104 for sealing the substrate 101 and the lower substrate 102, a phosphor 105 for emitting visible light by gas discharge in the discharge cell space, an electrode 107, and the like.

The basic light emission principle of the surface light source device 100, that is, FFL, is similar to that of general fluorescent lamps. In detail, when a voltage is applied to the pair of electrodes 107, an electric field is generated in the discharge space, and thus ultraviolet rays are emitted. The emitted ultraviolet rays activate the phosphor 150 coated around the discharge space to display visible light. Is released.

On the other hand, the type of the discharge gas is largely divided into anhydrous mercury and mercury discharge gas. In the case of using mercury-free discharge gas, a gas containing xenon (Xe) that emits ultraviolet rays by an organic electric field is used, and helium (He), neon (Ne), argon (Ar), and krypton ( A mixed gas further containing an inert gas such as Kr) is used. When using a mercury (Hg) discharge gas, the mixed gas which further contains inert gas, such as neon (Ne) and argon (Ar), is used.

According to the conventional surface light source device 100, a pair of electrodes 107 for maintaining an electric field in the discharge space may be typically formed on the lower substrate 101 or the upper substrate 102.

However, in order to form the discharge electrode on the upper substrate 101 or the lower substrate 102, a metal layer formation, a dielectric layer formation, and a protective layer deposition process are essentially required. Therefore, in order to manufacture a large amount of substrate to be used in the surface light source device, it is necessary to repeatedly perform the above three complex processes to generate an electrode structure.

In detail, in detail, the metal layer forming process may include detailed processes such as electrode printing, drying, and baking, and the dielectric layer forming process may include detailed processes such as dielectric printing, drying, and baking. Since it may include a very large number of processes required, the protective layer deposition process is performed using a thin film deposition equipment has a disadvantage that takes a long time to ensure the degree of vacuum because such a thin film deposition equipment is a vacuum equipment.

In particular, the metal to be used as an electrode for the above metal layer forming process can be pasted, the metal paste is prepared by mixing a metal powder, a binder, a solvent, a dispersant and the like. In this case, since silver (Ag) is used as the metal powder, a material cost is increased, and when the electrode is to be formed from the paste, the process cost is increased because printing, drying, and baking processes are required.

In addition, since the adhesion between the metal layer and the dielectric layer is poor, bubbles may be formed or defects may occur during the manufacturing process. In this case, there is a serious problem such that the dielectric may be destroyed during discharge.

The present invention is to solve the above-described problems of the prior art, and by replacing the metal layer that has been used as the electrode of the surface light source device with aluminum, the increase in manufacturing cost due to the manufacture of the metal paste required for the conventional electrode formation An object of the present invention is to provide a surface light source device which can be avoided, and a method of manufacturing the same.

Another object of the present invention is to simply form a dielectric layer by making the electrode layer of the discharge electrode aluminum and anodizing the surface of the electrode layer, so that a separate complicated process for making a dielectric is not required, thereby simplifying the process. The present invention provides a surface light source device and a method of manufacturing the same.

Another object of the present invention is to enable the alumina obtained by anodizing the surface of an aluminum electrode to simultaneously perform not only a dielectric layer but also a function as a protective layer, thereby simplifying the process by eliminating the protective layer deposition process required for manufacturing a discharge electrode. The present invention provides a surface light source device and a method of manufacturing the same.

Another object of the present invention is to use the aluminum and alumina of the electrode layer and the dielectric layer of the discharge electrode having good bonding properties so that bubbles and defects between the two can be minimized when manufacturing the discharge electrode. The present invention provides a surface light source device and a method of manufacturing the same.

In order to achieve the object of the present invention as described above, and to perform the characteristic functions of the present invention described below, the characteristic configuration of the present invention is as follows.

According to an aspect of the present invention, an upper substrate and a lower substrate covering at least one unit discharge cell up and down, and a discharge electrode inserted between the upper substrate and the lower substrate, generating an electric field in the discharge space, The discharge electrode is provided with a light source device comprising an electrode layer made of aluminum, and a dielectric layer produced by anodizing the aluminum on the outside of the electrode layer.

According to another embodiment of the present invention, a method of manufacturing a discharge electrode for generating an electric field in a discharge space of a light source device, the method comprising: (a) forming an electrode layer of aluminum on a substrate, and (b) an outer surface of the aluminum Anodizing is provided to provide a method of manufacturing a discharge electrode comprising the step of forming a dielectric layer.

According to another embodiment of the present invention, a discharge electrode which is inserted between the upper substrate and the lower substrate covering the at least one unit discharge cell up and down and the upper substrate and the lower substrate, to generate an electric field in the discharge space A method of manufacturing a light source device comprising: (a) forming an electrode layer from aluminum, (b) anodizing an outer surface of the aluminum to form a dielectric layer to complete a discharge electrode, and (c) the discharge electrode A method of manufacturing a light source apparatus is provided, comprising inserting a gap between the upper substrate and the lower substrate.

According to the present invention, by replacing the metal layer, which has been used as an electrode of the conventional surface light source device, with aluminum, it is possible to reduce the cost of manufacturing the metal paste required for forming the conventional electrode.

In addition, by using the electrode layer of the discharge electrode as aluminum and using alumina obtained by anodizing the surface of the electrode layer as the dielectric layer, complicated processes such as dielectric printing, drying, and firing, which have conventionally been required to form the dielectric layer, are omitted. The number and processing time can be reduced and productivity can also be improved.

In addition, when the electrode layer and the dielectric layer of the discharge electrode are made of aluminum and alumina, respectively, the adhesion between the two is good, so that bubbles and defects between the two are minimized when manufacturing the discharge electrode. Can be eliminated.

In addition, since the alumina obtained by anodizing the surface of the aluminum electrode has a high hardness and can function as a protective layer as well as a dielectric layer, the protective layer deposition process required for manufacturing a discharge electrode can be omitted. This can further simplify the process.

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

2 is a diagram showing the configuration of the surface light source device 200 according to an embodiment of the present invention. Specifically, FIG. 2A is a plan view showing the overall configuration of the surface light source device 200, FIG. 2B is a perspective view showing a partial configuration of the surface light source device 200 of FIG. 2A, and FIG. 2C is the surface light source device of FIG. 200 is a cross-sectional view taken along the line A-A '.

2A to 2C, the surface light source device 200 supports the upper substrate 210, the lower substrate 220, the upper substrate 210, and the lower substrate 220 apart from each other to form a unit discharge space. The partition member 230, the encapsulant 240 sealing the upper substrate 210 and the lower substrate 220, the discharge electrode 250 generating the electric field for discharging the discharge gas in the discharge cell space, and the discharge electrode 250. ) May include a conductive metal part 270 electrically connecting the outside of the area partitioned by the encapsulant 240 to a phosphor (not shown) that emits visible light by gas discharge.

The surface light source device 200 is configured of discharge cells of at least one unit. For the convenience of description, the surface light source device 200 will be described as an example of the surface light source device of the present invention.

The surface light source device 200 according to the present embodiment is characterized in that it includes a discharge electrode 250 having alumina as a dielectric layer obtained by manufacturing an electrode layer from aluminum and anodizing its surface. As described later, the discharge electrode 250 can achieve all of the same functions as the electrode layer, the dielectric layer, and the protective layer in the conventional surface light source device using only a simple manufacturing process.

2B and 2C, the discharge electrode 250 may have a pillar shape, for example, a rectangular parallelepiped shape, and may include an electrode layer 253 made of aluminum and an alumina dielectric layer 255 surrounding the electrode layer 253. Able to know. 2B and 2C, only the case where the discharge electrode 250 is formed in a rectangular parallelepiped shape is illustrated, but the present invention is not limited thereto and may be formed in various shapes such as a circular pillar, a polygonal pillar, and a pipe.

On the other hand, a phosphor (not shown) may not be formed in an area where the partition member 230 and / or the discharge electrode 250 are positioned, so that when the visible light emitted from the phosphor passes through the upper substrate 210, the partition member ( A non-light emitting region (dark line) may be formed on an upper portion of the region where the 230 and / or the discharge electrode 250 is located. In order to minimize this, the width of the partition member 230 and / or the discharge electrode 250 may be as narrow as possible. In addition, since the discharge electrode 250 functions to support the upper substrate 210 and the lower substrate 220 and form a discharge space, like the partition member 230, the height of the discharge electrode 250 is greater than that of the partition member 230. It can be set to almost the same height.

As described above, the electrode layer 253 may be formed of aluminum (Al). Aluminum has excellent electrical conductivity, easy processing, good ductility, and good corrosion resistance. The aluminum electrode layer 253 may be formed in the same shape as that of the discharge electrode 250, for example, in a rectangular parallelepiped form as a component located inside the discharge electrode 250. However, the present invention is not limited thereto, and the discharge electrode 250 may be in the form of a cylinder or another polygonal column, and the electrode layer 253 may be manufactured in various forms accordingly.

The dielectric layer 255 surrounds the electrode layer 253 as a component located outside the discharge electrode 250. The dielectric layer 255 may be formed according to the shape of the desired discharge electrode 250, and may also be formed in various shapes such as a square pillar, a cylinder, and a polygonal pillar.

Since the electrode layer 253 of the discharge electrode 250 of the present invention is made of aluminum, alumina can be formed on the outer surface of the aluminum electrode layer 253 only by a simple process of anodizing the surface of the electrode layer 253. It can function as a good dielectric for the reasons described in. That is, alumina, which is aluminum oxide, has a relatively high dielectric constant of 9 and excellent polarization characteristics, and thus can be regarded as a material suitable as a dielectric layer of a light source device.

On the other hand, in order to prevent the occurrence of defects such as bubbles in the discharge electrode 250, the electrode layer 253 and the dielectric layer 255 should be well bonded to each other, the electrode layer 253 and alumina made of aluminum The dielectric layer 255 may have a very good bonding property.

Since a method of oxidizing aluminum to obtain alumina is a known technique, it will be briefly described. First, the positive electrode is connected to the aluminum to form alumina, and the negative electrode is connected to the aluminum to be used as the negative electrode substrate, and then the positive and negative electrodes are added to an electrolyte solution such as oxalic acid, sulfuric acid, chromic acid, or phosphoric acid. When a pole is applied and a voltage of about 40 V is applied, alumina is obtained from the (+) pole. In this manner, the entire surface of the electrode layer 253, which is aluminum, may be oxidized so that the outer surface of the electrode layer 253 is made of alumina, but is not limited thereto. For example, patterning of aluminum may be attempted.

The surface light source device 200 of the present invention can avoid the increase in manufacturing cost due to the manufacture of the metal paste required to form the metal layer of the conventional discharge electrode on the substrate by replacing the metal layer of the conventional surface light source device with aluminum.

In addition, by using the alumina obtained by oxidizing the outer surface of the aluminum electrode layer 253 of the discharge electrode 250 as the dielectric layer 255, the number of working steps and the process time required for manufacturing the discharge electrode can be reduced, and the productivity is also improved. Can be.

In addition, as described above, since the materials of the electrode layer 253 and the dielectric layer 255 of the discharge electrode 250 are made of aluminum and alumina, respectively, the adhesion between the two materials is good, the electrode layer (when manufacturing the discharge electrode 250) The occurrence of bubbles and defects between the 253 and the dielectric layer 255 is minimized, and dielectric breakdown due to defects or the like during operation of the surface light source device 200 can be significantly reduced.

In addition, since the hardness of the alumina dielectric layer 255 formed on the outside of the discharge electrode 250 is high, it may also function as a protective layer. Of course, since the hardness of the alumina constituting the dielectric layer 255 has pores, the hardness may not be as good as that of a conventionally known alumina film. However, MgO or the like may be treated to adhere to the alumina surface or the pores, thereby increasing the hardness. You can increase it enough.

In other words, by manufacturing the discharge electrode 250 by the above-described process, it is possible to omit the metal layer firing, dielectric layer firing, and protective layer deposition process that is conventionally required for manufacturing the discharge electrode, thereby minimizing the process time and simplifying the process. Could be.

Meanwhile, referring to FIG. 2B, the conductive metal portion 270 is connected to the upper portion of the discharge electrode 250 and extends outside of the encapsulant portion 240. That is, the conductive metal part 270 functions as a component for electrically connecting the discharge electrode 250 to the outside of the encapsulant 240.

At this time, a portion of the discharge electrode 250 and the encapsulant 240 located in the vicinity of the encapsulant 240 may have a difference in coefficient of thermal expansion, and the entire apparatus may be broken during firing due to the difference in coefficient of thermal expansion. In order to prevent such a phenomenon, the conductive metal part 270 may be used to connect the electrical conductivity of the discharge electrode 250 to the outside of the encapsulant 240. Therefore, it is preferable to select a material excellent in conductivity as the material of the conductive metal portion 270. In addition, since it is a component for preventing the phenomena due to thermal expansion during firing, it is preferable to be manufactured as thin as possible to minimize the effect of thermal expansion.

In addition, since the conductive metal part 270 is a component for connecting the discharge electrode 250 to the outside of the encapsulant 240, the conductive metal part 270 is sufficient to be in contact with the discharge electrode 250. In this case, the conductive metal part 270 may be fixed by the encapsulant part 240 so as to contact the discharge electrode 250. For example, after attaching the discharge electrode 250 to the lower surface of the upper substrate 210 and electrically contacting the conductive metal part 270 to the discharge electrode 250, the conductive metal part is formed by using the encapsulant 240. By applying along the edge of the lower surface of the upper substrate 210 so as to pass over the (270), it is possible to maintain a state in which the discharge electrode 250 and the conductive metal portion 270 is in electrical contact. The conductive metal part 270 may be implemented by a metal plate, a conductive paste, a metal wire, or the like.

3 is a view showing the configuration of a surface light source device 300 according to another embodiment of the present invention. Specifically, FIG. 3A is a plan view showing the entire configuration of the surface light source device 300, and FIG. 3B is a cross-sectional view taken along the line AA ′ of the surface light source device 300 of FIG. 3A.

The surface light source device 300 according to the present exemplary embodiment includes an upper substrate 310, a lower substrate 320, a partition member 330, an encapsulant 340, a discharge electrode 350, and the like. Meanwhile, the discharge electrode 350 includes a glass rod 351, an electrode layer 353, and a dielectric layer 355.

The electrode layer 353 may be formed by bonding an aluminum foil to the glass rod 351. Specifically, the discharge electrode 350 may be obtained by attaching an aluminum foil to function as an electrode layer 353 on the front and back of a wide glass plate, and then cutting it into a long rod shape. In FIG. 3, only the long rod shape is illustrated as the shape of the discharge electrode 350, but is not limited thereto.

On the other hand, the dielectric layer 355 according to the present embodiment takes the form of enclosing the electrode layer 353 as a component formed on the outermost side of the discharge electrode (350). In addition, the dielectric layer 355 may be formed in the form of a film having a predetermined thickness like the electrode layer 353, and may be made of alumina obtained by anodizing the outer surface of the aluminum electrode layer 353 as in the previous embodiment.

In the present embodiment, the aluminum electrode layer 353 is attached to the glass rod 351 in the form of a film having an appropriate thickness. Since the electrode layer 353 is formed to a thickness that is not affected by thermal expansion, the thermal expansion is small. When firing, there is almost no possibility of fracture due to a difference in coefficient of thermal expansion with the suture portion 340.

Accordingly, the components such as the conductive metal part 270 of FIG. 2 are not required separately, and the discharge electrode 350 itself may be exposed to the outside of the encapsulant 340 to be connected to another electric device. In this case, the discharge electrode 350 may be attached to the lower surface of the upper substrate 310, then coated to pass over the discharge electrode 350 using the encapsulant 340, and then sealed with the lower substrate 320. .

4 is a view illustrating a process of manufacturing the discharge electrode 350 in the surface light source device 300 of FIG. .

First, as shown in FIG. 4A, after preparing the glass plate 410 for manufacturing the discharge electrode 350, an aluminum foil to function as the electrode layer 353 is attached to the front and / or rear surface of the glass plate 410. As a method of attaching the aluminum foil to the glass plate 410, a method of melting and attaching a glass frit, such as a sealing agent or a dielectric, and applying an appropriate voltage to the aluminum foil and the glass plate 410 using electrostatic bonding, respectively, The method of joining using and the like can be used. For reference, when manufacturing the discharge electrode 350 positioned at the edge of the surface light source device 300, the electrode layer 353 may be formed on only one side, so that the aluminum foil is attached only to the front or rear side of the glass plate 410. You may be able to.

Thereafter, as shown in FIG. 4B, the glass plate 410 on which the electrode layer 353 is attached is cut in the form of a rod to manufacture a glass rod 351 to which the electrode layer 353 is attached. In this case, the cutting may be performed by a cutting method using a diamond or tungsten alloy saw, a high pressure water jet cutting method, or a laser cutting method, but is not limited thereto.

Next, as shown in FIG. 4C, a dielectric layer 355 is formed on the electrode layer 353 to surround the outer surface of the electrode layer 353. Since the electrode layer 353 is formed of aluminum foil as described above, the alumina obtained by anodizing the surface of the electrode layer 353 may be treated as the dielectric layer 355.

For reference, the order of manufacturing steps described with reference to FIGS. 4A to 4C is not limited to the above examples, and various modifications may be possible. That is, the glass plate 410 may be cut into a rod to form the glass rod 351, and then the electrode layer 353 may be applied. The electrode layer 353 may be applied onto the glass plate 410 and the dielectric layer 355 may be applied thereon. After the formation, the discharge electrode 350 may be obtained by cutting the glass plate 410 in which the electrode layer 353 and the dielectric layer 355 are formed in a rod shape.

Finally, as shown in FIG. 4D, the surface light source device 300 is inserted between the upper substrate 310 and the lower substrate 320 by inserting the discharge electrodes 350 produced in a large amount by the above method. ) Is completed. Specifically, although the manufacturing of the surface light source device 300 may be completed by inserting orthogonally to the partition member 330 inserted between the upper substrate 310 and the lower substrate 320, the partition member 330 is necessarily. It does not have to be orthogonal to.

According to this manufacturing method, since the electrode layer 353 is made of aluminum, it is possible to omit the metal paste fabrication process required for forming the electrode layer of the conventional surface light source device, thereby reducing work time and manufacturing cost, and reducing the aluminum electrode layer ( Since the adhesion between the 353 and the alumina dielectric layer 355 is improved, the possibility of defects may be minimized when manufacturing the discharge electrode 350. Since the hardness of the alumina is better than that of the glass, the dielectric layer 355 may also function as a protective layer. As a result, the protective layer deposition process is also completely omitted, thereby simplifying the number of work processes.

Therefore, according to the present invention, since a large amount of discharge electrodes 350 can be manufactured only by attaching, cutting, and oxidizing aluminum foil, mass production of the discharge electrodes 350 becomes possible, thereby improving productivity of the surface light source device. It can be maximized.

5 is a view showing the configuration of a surface light source device 500 according to another embodiment of the present invention. Specifically, FIG. 5A is a plan view showing the entire configuration of the surface light source device 500, and FIG. 5B is a cross-sectional view taken along the line AA ′ of the surface light source device 500 of FIG. 5A.

The surface light source device 500 according to the present embodiment includes a discharge electrode 550 including a hollow pipe-shaped electrode layer 553 made of aluminum and a dielectric layer 555 made of alumina positioned outside the electrode layer 553. It is characterized by including. In particular, the discharge electrode 550 is a hollow pipe form is different from the above-described embodiment.

As shown in FIG. 5B, the electrode layer 553 of the discharge electrode 550 may have a hollow cylindrical shape, that is, a pipe shape. Also in this embodiment, since the discharge electrode 550 functions to support the upper and lower substrates and form the discharge space like the partition member 530, the height, that is, the diameter of the circle seen when the discharge electrode 550 is cut is the partition wall. The height of the member 530 may be determined to be about the same.

Meanwhile, also in this embodiment, the aluminum electrode layer 553 of the discharge electrode 550 is anodized and the surface of the electrode layer 553 is made of alumina so that the dielectric layer 555 surrounds the electrode layer 553. You can get it.

Since the electrode layer 553 in the present embodiment is in the form of a hollow pipe, its thickness is thin and hollow so that the effect of thermal expansion is minimized. Accordingly, there is little possibility of destruction due to the difference in thermal expansion coefficient with the encapsulant 540 during firing, and thus there is no need for a component such as the conductive metal portion 270 as shown in FIG. 2. That is, since the pipe-type discharge electrode 550 itself is exposed to the outside of the encapsulant 540, it may be electrically connected to another device.

6 is a diagram showing the configuration of a surface light source device 600 according to another embodiment of the present invention. Specifically, FIG. 6A is a plan view showing the entire configuration of the surface light source device 600, and FIG. 6B is a cross-sectional view taken along the line AA ′ of the surface light source device 600 of FIG. 6A.

The surface light source device 600 according to the present embodiment may be a modified embodiment of the surface light source device 500 of FIG. 5. The overall configuration of the surface light source device 600 is substantially the same as the surface light source device 500, and only the shape of the discharge electrode 650 has a difference.

The discharge electrode 650 of the surface light source device according to the present exemplary embodiment may be formed in a cylindrical shape or a rod shape, unlike the discharge electrode 550 in the surface light source device 500. Even in this case, since the discharge electrode 650 also serves as a partition member, the height can be formed almost the same as that of the partition member.

The material of the electrode layer 653 of the discharge electrode 650 is aluminum, and alumina surrounds the outer surface of the aluminum electrode layer 653, where the alumina will function as the dielectric layer 655. As described above, the dielectric layer 655 may be formed of an alumina layer generated by anodizing the surface of the electrode layer 653 made of aluminum.

The present invention has been described so far with respect to the surface light source device, but is not necessarily limited thereto, and the scope of the present invention may extend to various light source devices other than the surface light source if it includes the above-described unique aluminum electrode structure. Of course this will be called.

In the present invention as described above has been described by the specific embodiments, such as specific components and limited embodiments and drawings, but this is provided to help a more general understanding of the present invention, the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention should not be limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the claims described below, belong to the scope of the present invention. something to do.

1A is a plan view showing the overall configuration of a surface light source device according to the prior art.

FIG. 1B is a cross-sectional view taken along line AA ′ of FIG. 1A.

2A is a plan view showing the overall configuration of a surface light source device according to an embodiment of the present invention.

FIG. 2B is a perspective view showing a partial configuration of the surface light source device of FIG. 2A.

FIG. 2C is a cross-sectional view taken along the line AA ′ of the surface light source device of FIG. 2A.

3A is a plan view showing the overall configuration of a surface light source device according to another embodiment of the present invention.

3B is a cross-sectional view taken along the line AA ′ of the surface light source device of FIG. 3A.

4A to 4D are process diagrams illustrating a process of manufacturing a discharge electrode in the surface light source device of FIG. 3.

5A is a plan view showing the overall configuration of a surface light source device according to another embodiment of the present invention.

5B is a cross-sectional view taken along the line AA ′ of the surface light source device of FIG. 5A.

6A is a plan view showing the entire configuration of a surface light source device according to another embodiment of the present invention.

6B is a cross-sectional view taken along the line AA ′ of the surface light source device of FIG. 6A.

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

200, 300, 500, 600: surface light source device

210, 310, 510, 610: upper substrate

220, 320, 520, 620: lower substrate

230, 330, 530, 630: partition member

240, 340, 540, 640: suture

250, 350, 550, 650: discharge electrode

253, 353, 553, 653: electrode layer

255, 355, 555, 655: dielectric layer

351: glass rod

270: conductive metal portion

Claims (29)

An upper substrate and a lower substrate covering the at least one unit discharge cell up and down, and A discharge electrode inserted between the upper substrate and the lower substrate to generate an electric field in the discharge space, The discharge electrode, An electrode layer made of aluminum, and A dielectric layer formed by anodizing the aluminum outside the electrode layer, Further comprising a sealant for bonding the upper substrate and the lower substrate, And a conductive metal part for connecting the conductivity of the discharge electrode to the outside of the encapsulant part. delete delete delete The method of claim 1, And the conductive metal part is fixed by the encapsulant part to be electrically connected to the discharge electrode. delete The method of claim 5, The conductive metal portion, A light source device comprising at least one of a metal wire or a conductive paste. delete delete delete An upper substrate and a lower substrate covering the at least one unit discharge cell up and down, and A discharge electrode inserted between the upper substrate and the lower substrate to generate an electric field in the discharge space, The discharge electrode, An electrode layer made of aluminum, and A dielectric layer formed by anodizing the aluminum outside the electrode layer, The discharge electrode is Innermost glass rod, The electrode layer located outside the glass rod, and And the dielectric layer positioned outside the electrode layer. The method of claim 11, Further comprising a sealant for bonding the upper substrate and the lower substrate, The encapsulant unit is formed along an outer edge of the upper substrate and the lower substrate. The method of claim 12, The discharge electrode is a light source device, characterized in that extending to the outside of the sealant portion. The method of claim 13, And the discharge electrode is fixed by the encapsulant. The method of claim 14, The electrode layer located outside the glass rod is a light source device, characterized in that the aluminum foil. delete delete An upper substrate and a lower substrate covering the at least one unit discharge cell up and down, and In the manufacturing method of the light source device including a discharge electrode inserted between the upper substrate and the lower substrate, to generate an electric field in the discharge space, (a) forming an electrode layer from aluminum, (b) anodizing the outer surface of the aluminum to form a dielectric layer to complete the discharge electrode, and (c) inserting the discharge electrode between the upper substrate and the lower substrate, In step (c), Attaching the discharge electrode to the upper substrate; Electrically connecting a conductive metal part to the discharge electrode; Applying an encapsulant to an outer edge of the upper substrate, applying a portion of the conductive metal to be embedded; and And bonding the lower substrate using the applied encapsulant. delete delete The method of claim 18, The conductive metal portion, A method of manufacturing a light source device, characterized in that it is produced in the form of at least one of a metal wire or a conductive paste. delete An upper substrate and a lower substrate covering the at least one unit discharge cell up and down, and In the manufacturing method of the light source device including a discharge electrode inserted between the upper substrate and the lower substrate, to generate an electric field in the discharge space, (a) forming an electrode layer from aluminum, (b) anodizing the outer surface of the aluminum to form a dielectric layer to complete the discharge electrode, and (c) inserting the discharge electrode between the upper substrate and the lower substrate, In step (c), Attaching the discharge electrode to the upper substrate; Applying an encapsulant to an outer edge of the upper substrate so that a portion of the discharge electrode is embedded; and And bonding the lower substrate using the applied encapsulant. The method of claim 23, wherein And the discharge electrode extends to the outside of the encapsulant portion. delete delete delete delete An upper substrate and a lower substrate covering the at least one unit discharge cell up and down, and In the manufacturing method of the light source device including a discharge electrode inserted between the upper substrate and the lower substrate, to generate an electric field in the discharge space, (a) forming an electrode layer from aluminum, (b) anodizing the outer surface of the aluminum to form a dielectric layer to complete the discharge electrode, and (c) inserting the discharge electrode between the upper substrate and the lower substrate, In step (b), And anodizing the outer surface of the aluminum to form the dielectric layer, and then processing to adhere to the surface and pores of the dielectric layer using MgO to complete a discharge electrode.

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