KR100766912B1 - Method of and Apparatus for making Flat Fluorescent Lamps - Google Patents

Abstract

The present invention relates to a method and an apparatus for manufacturing a surface light emitting lamp that can reduce the manufacturing cost by processing a high temperature process was processed individually in a batch process. Such a method of the present invention comprises the steps of coating a phosphor on the top glass formed by cutting the original glass; Forming an exhaust hole in the lower glass formed by cutting the original glass, and printing a fluorescent film and a frit glass; A high temperature batch processing step of forming an upper plate glass coated with the phosphor according to a predetermined temperature profile, forming a channel by integrating with the lower plate, and then attaching and exhausting an exhaust pipe; And diffusing and sealing mercury in the channel exhausted in the high temperature batch processing step. The high temperature batch process is to batch-process the top glass forming, the phosphor baking, the frit glass baking, the top and bottom plate after baking, the exhaust and the tip off process.

Therefore, according to the present invention, by collectively processing the high temperature treatment of the surface emitting lamp, the investment cost for the process equipment can be reduced, and the processing time can be shortened.

Surface emitting lamp, batch processing, high temperature process, heating furnace, coalescence, glass molding

Description

Method for manufacturing surface emitting lamp and device therefor {Method of and Apparatus for making Flat Fluorescent Lamps}

Figure 1a is a process diagram showing a conventional surface light emitting lamp manufacturing procedure,

Figure 1b is a graph showing the temperature profile of the high temperature process in the conventional surface-emitting lamp manufacturing procedure,

2 is a process chart showing a surface emitting lamp manufacturing procedure according to the present invention,

Figure 3 is a schematic diagram showing a line emitting lamp manufacturing line according to the present invention,

4 is a schematic view showing the flow of products in the manufacturing line according to the present invention,

5 is an example of the temperature profile of the manufacturing equipment shown in FIG.

6 is an enlarged view of the first to third equipment shown in FIG.

7 is an enlarged view of the upper and lower plates shown in FIG.

FIG. 8 is an enlarged view of the fourth equipment shown in FIG. 3;

9 is an enlarged view of a fifth piece of equipment shown in FIG. 3;

10 is an enlarged view of the sixth equipment shown in FIG. 3;

FIG. 11 is an enlarged view of the seventh equipment shown in FIG. 3;

12 is an enlarged view of the eighth equipment shown in FIG. 3.

* Explanation of symbols for main parts of the drawings

110 ~ 180: Equipment L1: Product Line

L3: Products & Cartines L2: Cartline

111: furnace 112: conveyor

113: lower plate support setter 114: upper plate support setter

210: top plate of the surface light emitting lamp 220: bottom plate of the surface light emitting lamp

211: top glass 212: top phosphor

221: lower glass 222: sealant

223: lower plate phosphor

The present invention relates to a method and apparatus for manufacturing a surface light emitting lamp, and more particularly, to a method and apparatus for manufacturing a surface light emitting lamp that can reduce the manufacturing cost by processing a high temperature process was processed individually in a batch process.

In general, a backlight used as a light source such as a liquid crystal display device has a direct type and a light guide plate in which a cylindrical lamp (CCFL, etc.) is disposed. In the direct type, the fluorescent lamp is placed on a flat surface. Since the shape of the fluorescent lamp appears on the liquid crystal panel, the gap must be maintained between the lamp and the liquid crystal, and light scattering means must be provided for the uniform distribution of light. There is. In the light guide plate method, a fluorescent lamp is installed outside the flat plate to disperse light to the entire surface by using the light guide plate, which requires low brightness and high optical processing technology for the light guide plate.

Recently, in order to solve these problems and provide a backlight having high brightness, flat fluorescence lamps (Flat Fluorescent Lamps) in which the entire plane facing the display surface of the panel emits light have been widely researched and developed. In general, the surface light emitting lamp is configured to form a discharge space between the upper plate and the lower plate coated with the phosphor, and then discharge the discharge gas between the anode and the cathode electrode so that the phosphor emits light.

As shown in FIG. 1, the process of manufacturing the conventional surface light emitting lamp includes an upper plate glass process (S10) for manufacturing an upper plate, a lower plate glass process (S20) for producing a lower plate, and an upper / lower plate combined process (S30). Proceeds to).

Referring to Figure 1, the top glass step (S10) is the original glass cutting step (S11) to form the top glass by cutting the original glass to a suitable size, the glass forming step (S12) for molding the top glass into a predetermined shape, The cleaning process (S13), the phosphor coating process (S14) for coating the phosphor on the formed top glass, the phosphor baking process (S15), and the bottom glass process (S20) is made of the original glass Original glass cutting step (S21) for cutting the lower plate glass to form a lower plate glass, exhaust hole processing step (S22) for forming an exhaust hole in the lower plate glass, fluorescent film printing step (S23) for screen printing a phosphor on the lower plate glass, drying It consists of a drying process (S24), a frit glass printing process (S25), and a frit glass baking process (S26). After the upper plate and the lower plate glass are coalesced, the process (S30) includes an upper plate and a lower plate bonding / exhaust pipe attaching process (S31), a post-bonding baking process (S32), and an exhaust / tip off process (S33). , Mercury high frequency induction heating step (S35), mercury diffusion step (S36), the lighting step (S37).

The upper plate and the lower plate bonding / exhaust pipe attaching step (S31) attach the exhaust pipe after attaching the upper plate glass generated in the upper plate glass process (S10) and the lower plate glass generated in the lower plate glass process (S20).

In the conventional surface-emitting lamp manufacturing process, glass forming step (S12), phosphor baking step (S15), frit glass baking step (S26), upper and lower plate bonding after baking step (S32), exhaust / tip-off step (S33) Six processes, such as the mercury diffusion process (S36), should be carried out at a high temperature process of approximately 300 ℃ to 700 ℃. To this end, six separate heating furnaces are conventionally required, and the temperature profile of each heating furnace is maintained at a constant high temperature by raising the temperature at room temperature as shown in FIG. Since the process is performed separately for each process according to the profile, there is a problem in that time and cost increase according to the process.

The present invention has been proposed to solve the above problems, glass molding, phosphor baking, frit glass baking, upper and lower plate bonding after baking, which requires a high temperature process, the exhaust process can be processed in a batch process according to one temperature profile It is an object of the present invention to provide a method and apparatus for manufacturing a surface light emitting lamp.

In order to achieve the above object, the method of the present invention comprises the steps of: coating a phosphor on the upper glass formed by cutting the original glass; Forming an exhaust hole in the lower glass formed by cutting the original glass, and printing a fluorescent film and a frit glass; A high temperature batch processing step of forming an upper plate glass coated with the phosphor according to a predetermined temperature profile, forming a channel by integrating with the lower plate, and then attaching and exhausting an exhaust pipe; And diffusing and sealing mercury in the channel exhausted in the high temperature batch processing step. The high temperature batch process is to batch-process the top glass forming, the phosphor baking, the frit glass baking, the top and bottom plate after baking, the exhaust and the tip off process.

In addition, in order to achieve the above object, the device of the present invention, in the surface light emitting lamp manufacturing apparatus for discharging the upper and lower plate coalesced product bite after the coalescing after receiving the upper glass and the lower glass, the upper glass and the lower glass is transported A product line, and a cart line to which the cart is transferred; And a product & cart line through which products and carts are transported by products with exhaust pipes, wherein the product lines include first to sixth equipments which maintain or decrease a temperature according to a temperature profile to handle a predetermined high temperature treatment. And, the cart line is provided with a seventh equipment for transporting the cart, the product and the cart line is characterized in that it is provided with an eighth equipment to bite the exhaust pipe to the product.

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

2 is a process chart showing a manufacturing method of the surface-emitting lamp according to the present invention. In FIG. 2, the same reference numerals will be used for the same processes as in the related art.

As shown in FIG. 2, the method of manufacturing a surface light emitting lamp according to the present invention includes an upper plate glass process (S10) for manufacturing an upper plate and a lower plate glass process (S20) for producing a lower plate, and an upper / lower plate combined process (S30). Proceeds.

Referring to Figure 2, the top glass step (S10) is the original glass cutting step (S11) to form the top glass by cutting the original glass to a suitable size, and the phosphor coating process (S14) for coating the phosphor on the cut top glass The lower plate glass process (S20) is made by cutting the original glass to an appropriate size to form a lower plate glass (S21), and the exhaust hole processing step (S22), the lower plate to form an exhaust hole in the lower plate glass A fluorescent film printing process (S23), a drying (S24), a frit glass (Frit Glass) printing process (S25) for screen-printing the phosphor on the glass. In the batch process (S34) according to the present invention, the upper plate and the lower plate are merged at a high temperature according to a predetermined temperature profile, and after the batch process (S34), mercury high frequency induction heating process (S35), mercury diffusion process (S36), and lighting The process proceeds sequentially to step S37.

Comparing the surface light emitting lamp manufacturing process of the present invention with the conventional manufacturing process, the manufacturing method of the present invention is a high-temperature processing process (glass molding, phosphor baking, frit glass baking, phase / It can be seen that the baking and the exhaust process after bottom plate bonding can be processed in one batch step (S34).

In this manner, in the surface light emitting lamp manufacturing procedure of the present invention, a surface light emitting lamp manufacturing apparatus for processing a batch process (S34) of combining a top glass and a bottom glass according to a predetermined temperature profile (see the graph of FIG. 5) and performing high temperature treatment. 3 and 4, the production line (L1, L2, L3) by the conveyor consists of a heating furnace capable of temperature control.

Figure 3 is a schematic diagram showing the surface-emitting lamp manufacturing equipment according to the present invention, Figure 4 is a schematic diagram showing the flow of the product in the manufacturing line according to the invention, Figure 5 is a temperature profile of the manufacturing equipment shown in Figure 3 Is an example.

The production line to which the present invention is applied is a product line (L1) through which the upper and lower plate glass is transported, the cart line (L2) through which the cart is transported, and the product and the cart are transported by the exhaust pipe being bitten by the product of the upper and lower plates. Product & cartline (L3).

And the product line (L1) is provided with the first to sixth equipment (110 to 160) that is in charge of a predetermined high temperature treatment by the temperature is raised, maintained or lowered according to the temperature profile as shown in Figure 5, The seventh equipment 170 for transporting the cart is installed in the cart line L2, and the eighth equipment 180 for biting the exhaust pipe in the product is installed in the product & cart line L3.

The temperature profile of FIG. 5 includes a section T1 for raising the temperature at room temperature, a section T2 for maintaining the first temperature, a section T3 for raising the temperature again, a section T4 for maintaining the second temperature, Section T5 for gradually decreasing the temperature, section T6 for maintaining the third temperature, section T7 for lowering the temperature again, section T8 for maintaining the fourth temperature, section T9 for lowering the temperature again ), And a section T10 for maintaining a fifth temperature.

FIG. 6 is an enlarged view of the first to third equipment shown in FIG. 3.

The first to third equipment 110 to 130 according to the present invention is an upper plate support setter 114 for supporting the upper plate 210 of the surface light emitting lamp, and a lower plate support setter for supporting the lower plate 220 ( 113), a conveyor 112 for transferring the upper and lower plate support setters 113 and 114, and a heating furnace 111 capable of raising, maintaining and lowering the temperature according to a predetermined temperature profile. The first equipment 110 operates in the temperature raising section T1 of the temperature profile, the second equipment 120 operates in the holding section T1 of the temperature profile, and the third equipment 130 raises the temperature of the temperature profile. It operates in the section T3.

And the upper plate 210 which is mounted on the upper plate support setter 114 is made of a flat plate-shaped glass plate 211 coated with the phosphor 212, as shown in (b) of FIG. The lower plate 220 mounted on the setter 113 includes a lower plate glass 221 to which the phosphor 223 and the sealant 222 are coated, as shown in FIG.

Referring to FIG. 7, the upper plate 210 before molding is formed by applying the phosphor 212 to the upper plate glass 211 formed by cutting a flat glass disc into a quadrangular plate shape, and the lower plate 220 before being attached to the upper plate. ) Divides the area of the lower plate glass 221 formed by cutting a flat glass disc into a quadrangular plate shape, and then, a phosphor 223 is applied to a channel region forming a discharge space, and a sealant 222 is coated between the channel and the channel. will be.

FIG. 8 is an enlarged view of the fourth equipment 140 shown in FIG. 3, FIG. 9 is an enlarged view of the fifth equipment 150 shown in FIG. 3, and FIG. 10 is a sixth device (shown in FIG. 160 is an enlarged view of the seventh equipment 170 shown in FIG. 3, and FIG. 12 is an enlarged view of the eighth equipment 180 shown in FIG. 3.

Referring to FIG. 8, the fourth equipment 140 includes a top plate adsorption device for vacuum-suctioning the top plate 210 to a predetermined shape at a high temperature, and a vertical transfer lift 143 for transferring the top plate 210 up and down. ), A conveyor 112 for transporting the upper plate support setter 114 for supporting the upper plate 210, the lower plate support setter 113 for supporting the lower plate 220, and the upper / lower plate support setters 113 and 114. ), A heating furnace 141 capable of raising, maintaining and lowering the temperature according to a predetermined temperature profile. In addition, the upper plate glass adsorption device includes a mold 144 for forming the upper plate shape, a pipe 145 for glass vacuum adsorption, and a vacuum device 146.

The fourth equipment 140 operates at the highest temperature holding section T4 of the temperature profile and is molded by glass vacuum adsorption. That is, the glass plate 210 is lifted up and down by the vertical transfer lift 143 to be in close contact with the mold 144, and then the upper plate glass 210 is adsorbed onto the mold by operating the vacuum apparatus 146 to hold the vacuum. After a certain time, the upper plate glass 210 is formed by adsorptive force, and when the upper and lower transfer lifts 143 are lowered, the upper plate glass support setter 114 moves to No. 5 on the conveyor 112 and the lower plate glass 220. ) Is input. Subsequently, the upper and lower feed lifts 143 are lifted up to bring the lower plate 220 into close contact with the upper plate 210, and the upper and lower plates are separated from the mold 144 when the vacuum is released. Is then transferred to the next machine.

As shown in FIG. 9, the fifth equipment 150 includes an upper plate or lower plate support setter 113/114 for supporting a product in which the upper plate 210 and the lower plate 220 of the surface light emitting lamp are integrated with each other. Conveyor 112 for transporting the lower plate support setters 113 and 114, and a heating furnace 151 capable of raising, maintaining and lowering temperature in accordance with a predetermined temperature profile. The fifth equipment 150 operates in the falling section T5 descending to a temperature of 400 to 500 degrees in the temperature profile, and the upper and lower plates are bonded by the frit glass while the temperature is gradually lowered.

As shown in FIG. 10, the sixth equipment 160 includes a top or bottom support setter 113/114 for supporting a product 200 in which the top plate 210 and the bottom plate 220 of the surface light emitting lamp are integrated. And a conveyor 112 for transferring the setters 113 and 114 for supporting the upper and lower plates, a heating furnace 161 capable of raising, maintaining and lowering the temperature according to a predetermined temperature profile, and a product 200 having the combined product 200. It consists of a product conveying device 165 for transferring to the product & Carter line (L3) in L1). The sixth equipment 160 operates in a section in which the temperature decreases and transfers the product 200 to the neighboring line L3 by the product transfer device 165.

As shown in FIG. 11, the seventh equipment 170 includes a heating furnace 171, a carter 172, and a conveyor 112 for transporting the carter 172. The carter 172 has a vacuum for exhausting. A pump device 173, an exhaust line 174, and an exhaust pipe glass 175 are mounted.

As shown in FIG. 12, the eighth equipment 180 includes a top or bottom support setter 113/114 for supporting a product 200 in which the top plate 210 and the bottom plate 220 of the surface light emitting lamp are integrated. And a heating furnace 181 capable of raising, maintaining and lowering temperature according to a predetermined temperature profile, and attaching an exhaust pipe glass 175 to an exhaust hole of the combined product 200 to connect the product with the carter 172 and the carter. Conveyor 112 for conveying the product. The eighth equipment 180 operates in a section maintaining 300 to 400 degrees of the temperature profile, and performs an exhaust operation to remove internal impurities and maintain a vacuum of the lamp.

Next, an operation of manufacturing the surface light emitting lamp using the manufacturing apparatus of the present invention configured as described above is as follows.

First, the upper plate glass 210 coated with phosphor and the lower plate glass 220 coated with phosphor and frit glass in the previous upper glass process S10 and the lower glass process S20 as a product line L1. Input sequentially. The upper plate glass 210 and the lower plate glass 220 introduced into the product line are loaded on the supporting setters 113 and 114, and are transported on the conveyor 112.

The phosphor baking and frit glass baking process is performed at a temperature of about 300 ° C. to 500 ° C. in the first holding period T2 through the temperature rising period T1.

Subsequently, the glass forming process is performed at a temperature of about 500 to 700 ° C. in the second holding section T4 after the temperature is increased. That is, when the lower plate glass 220 is put on the conveyor 112 during the process of glass forming the upper plate 210 in the second holding section T4, the glass forming of the upper plate in the second holding section T4 is performed. At the end of the process, the lower plate is put in the lower portion of the upper plate, and when the process is finished, the upper plate 210 is dropped and aligned for bonding with the lower plate 220.

Then, after the process in the second holding period (T4), the temperature of the heating furnace gradually drops to 400 ~ 500 ℃ in the temperature drop section (T5), the upper plate 210 and the lower plate 220 is frit glass (Frit Glass) Is slowly bonded.

Subsequently, in the third holding section T6 at which the temperature is maintained at 400 ° C. to 500 ° C., the product 200 bonded to the exhaust pipe 175 that enters along the exhaust system path is aligned, and the temperature passes through the third holding section T6. As the fall continues, the exhaust pipe 175 is bonded with the product 200.

The exhaust operation is performed to remove the internal impurities and to maintain the vacuum of the lamp in the fourth holding section where 300 to 400 ° C. is maintained. At this time, the exhaust operation may use an exhaust system used for the PDP.

Subsequently, as the exhaust operation proceeds, the furnace is gradually cooled down, and when the product comes out at room temperature after the exhaust operation, the mixture gas injection and tip-off are performed.

As described above, according to the present invention, by collectively processing the high temperature treatment of the surface light emitting lamp, the investment cost for the process equipment can be reduced, and the processing time can be shortened. That is, the present invention processes and manufactures high-temperature treatment processes (glass forming, phosphor baking, frit glass baking, baking after top / bottom bonding, and exhaust process) that are conventionally distributed and individually processed in one batch process. It can save time.

Claims (9)

Coating a phosphor on the top glass formed by cutting the original glass; Forming an exhaust hole in the lower glass formed by cutting the original glass, and printing a fluorescent film and a frit glass; In accordance with the temperature profile to rise to a high temperature of 700 ℃ from room temperature and then back to room temperature, by sequentially adding the top glass and the bottom glass, baking the phosphor and frit glass, forming the top glass, the top plate Aligning the glass and the lower plate glass, aligning the exhaust pipe to the upper glass and the lower glass, bonding the aligned upper and lower glass and the exhaust pipe to each other, and impurities in the glass bonded through the exhaust pipe. Removing and removing the mixed gas and then tip-off the exhaust pipe (Tip-off); And And diffusing and sealing mercury in the channel exhausted from the batch processing step. delete delete In the surface light emitting lamp manufacturing apparatus for transporting the upper glass and the lower glass to discharge the upper and lower plate coalescing product bite after the exhaust pipe, Product line that the upper and lower glass is transported; And, A cart line through which the cart is transported; And Surface emission lamp manufacturing apparatus, characterized in that consisting of the product and the cart line product and cart is transported by the exhaust pipe to the product. According to claim 4, The product line includes first to sixth equipment for processing the top glass and the bottom glass at each temperature in accordance with the rise, maintain and fall of the temperature, The cart line has a seventh equipment for transporting the cart, The product and the cart line is provided with an eighth equipment for biting the exhaust pipe to the product. The method of claim 5, wherein the first to third equipment A top plate setter for supporting the top plate glass, a bottom plate setter for supporting the bottom plate glass, a conveyor belt for transferring the top / bottom plate setter, and a heating furnace for raising, maintaining and heating the temperature Light emitting lamp manufacturing apparatus. The apparatus of claim 5, wherein the fourth equipment is The glass adsorption device for vacuum-adsorption of the upper plate glass at high temperature, the upper and lower conveyance lift for transporting the upper glass up and down, the upper plate setter for supporting the upper glass and the lower plate setter for supporting the lower plate glass, and the lower plate setter Conveyor belt for conveying, surface-emitting lamp manufacturing apparatus comprising a heating furnace for raising, maintaining and heating the temperature. The apparatus of claim 5, wherein the sixth equipment is The upper or lower plate supporting setter for supporting the upper and lower plates of the surface emitting lamp, the conveyor for transporting the upper and lower plate supporting setters, and the heating for raising, maintaining and heating the temperature Surface-emitting lamp manufacturing apparatus characterized by consisting of a product transfer device for transferring from the product line to the product & Carter line. The apparatus of claim 5, wherein the eighth equipment is A top or bottom plate support setter for supporting the product in which the top and bottom plates of the surface emitting lamp are combined, and a heater connected to the product by attaching the exhaust pipe glass to the exhaust hole of the combined product by heating to raise, maintain and heat the temperature. Surface-emitting lamp manufacturing apparatus, characterized in that consisting of a cart and a conveyor for transporting products.

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