KR100973387B1 - Flexible flat fluorescent lamp and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a structure and a manufacturing method of a flexible flat fluorescent lamp used as a backlight or a flexible planar light source of a flexible display device, comprising: an upper plastic substrate, a lower plastic substrate, An organic sealant sealing the edges of the upper plastic substrate and the lower plastic substrate, a discharge gas injected into the inner plate internal structure, a plurality of partition walls arranged in a specific structure on one side of the lower plate or the upper plate forming the inside of the plate; An external electrode formed on the outside of the upper and lower plastic substrates to which an AC power is applied, and a magnesium oxide (MgO) thin film deposited on the plastic inside the upper plate, thereby enabling the plasma discharge principle to be used. The invention relates to a flat lamp.

Description

FLEXIBLE FLAT FLUORESCENT LAMP AND METHOD FOR MANUFACTURING THE SAME

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat fluorescent lamp having flexibility, and more particularly, to a flexible flat fluorescent lamp and a manufacturing method which can be used as a backlight of a liquid crystal display or a liquid crystal display having flexibility.

As the global information society enters the era of full-scale informatization, various types of display industries that process and display large amounts of information and various information are rapidly developing. As a result, an electronic display device (electronic display device) capable of meeting various demands of consumers, such as thinning, lightweighting, flexibility, and low power consumption of electronic displays, has been developed.

Since the liquid crystal display device is a non-light emitting display, a backlight unit for supplying a light source in addition to the liquid crystal panel displaying an image is necessary. That is, the liquid crystal display device uses the electro-optical properties of the liquid crystal injected into the liquid crystal panel, and unlike the plasma display penal (PDP) and the field emission display (FED), the liquid crystal display does not emit light by itself and thus is displayed on the liquid crystal panel. In order to view an image, a backlight unit including a backlight, which is a light source for uniformly irradiating a liquid crystal panel, is required.

In general, as a backlight for a liquid crystal display device, a cold cathode fluorescent lamp (CCFL) or an external electrode fluorescent lamp (EEFL) made of a glass tube is widely used in a conventional liquid crystal display device. have. However, these light sources are not flexible because they are manufactured using glass tubes as discharge spaces. BACKGROUND OF THE INVENTION There are a number of technical elements for manufacturing a flexible (flexible) liquid crystal display, and one of the problems to be solved is the conventional backlight.

Currently, backlight sources that discharge within glass tubes are not flexible and must be made of completely different structures and materials. To this end, development of a white-OLED light source or a flexible flat fluorescent lamp has been considered. On the other hand, flat fluorescent lamps (Flat Fluorescent Lamp) also has a problem that can not have flexibility because it is still manufactured with a glass substrate. In addition, even when the substrate is manufactured using a flexible material, there is a problem that the gas discharge space is not normally secured due to the bending property, and therefore, it is impossible to obtain a proper bending.

It is an object of the present invention to provide a structure of a flexible flat fluorescent lamp (Flexible FFL) that can be used as a backlight or a flexible planar light source of a flexible display device and a method of manufacturing the same. .

The present invention manufactures by replacing the flat fluorescent lamp that is currently manufactured on the basis of glass material with a plastic substrate, for this purpose a new method and technology in terms of the structural design, manufacturing process, materials used, etc. of the flat fluorescent lamp It is. Therefore, an object of the present invention is to manufacture a flat fluorescent lamp having flexibility and durability, and the resultant produced by the present invention can be used in the backlight of the liquid crystal display device having a flexible display device and flexibility.

 The present invention has a flexible discharge type formed between a flexible upper plastic substrate and a lower plastic substrate, and includes an organic sealant sealing an outer surface of the discharge space, a discharge gas and a phosphor layer injected into the discharge space. A fluorescent lamp comprising a partition wall provided on a surface of the upper plastic substrate or the lower plastic substrate to prevent the discharge space from adhering to each other, and having a different arrangement structure according to the shape and shape of the partition wall, thereby providing a driving power source. It is characterized by having a luminance of 60 ~ 400cd / ㎡ under the frequency 1 ~ 40kHz and the applied voltage 1 ~ 5kV.

Here, the upper plastic substrate and the lower plastic substrate are each made of one material selected from polycarbonate (PC, polycarbonate), polyethylene naphthalate (PEN, polyethylene terephthalate), and polyethylene terephthalate (PET). The upper plastic substrate and the lower plastic substrate are each characterized by being provided with a thickness of 100 to 2,000 μm, and the separation distance between the upper plastic substrate and the lower plastic substrate is 200 to 10,000 μm, And a front electrode formed of an indium tin oxide (ITO) thin film or an indium zinc oxide (IZO) thin film on an inner surface or an outer surface of the upper plastic substrate and the lower plastic substrate, respectively. Each deposited on the inner surface of the substrate It characterized in that it comprises a magnesium oxide (MgO) thin film, wherein the partition is characterized in that the upper plastic substrate or the lower plastic substrate is provided in an integral form formed by extrusion or injection processing in the form of embossing, the partition is 0.5 It is provided with a parallel pattern or a grid pattern having a line width of ~ 2mm and a height of 100㎛ ~ 2mm, characterized in that it is provided to ensure a discharge space having a line width of 1 ~ 10mm and a length of 5 ~ 50mm, The partition wall is provided in a hemispherical or cylindrical shape with a diameter and a height of 200 ~ 5,000㎛, characterized in that arranged in a matrix form each interval is 1,000 ~ 10,000㎛, the partition is 300 ~ 10,000㎛ diameter and height Is provided in the form of a bar (Bar) having a length of 500 ~ 10,000㎛ and a semi-circular cross-section, each interval is 1,000 ~ 10,000㎛ matrix or flat to each other Characterized in that arranged in the form, the partition wall has a cross section of 300 ~ 5,000㎛, the height is provided in the form of a triangular pyramid or triangular prism of 100 ~ 5,000㎛, each spacing matrix of 1,000 ~ 7,000㎛ Characterized in that arranged in the form, the partition is provided in the form of glass beads having a diameter size of 10 ~ 2,000㎛, characterized in that arranged in a uniformly distributed form so that each interval is 0.5 ~ 10mm, Phosphor layer is provided with a thickness of 30 ~ 500㎛ on the upper surface of the organic sealant applied on the upper plastic substrate or the lower plastic substrate, or mixed with the organic sealant to form a thickness of 30 ~ 500㎛ and then cured for 30 minutes at 150 ℃ It is characterized by.

In addition, the flexible flat fluorescent lamp manufacturing method according to the present invention comprises the steps of arranging the upper plastic substrate and the lower plastic substrate having a flexible space to have a discharge space at a predetermined interval, the surface of the upper plastic substrate or the lower plastic substrate A barrier rib is formed to prevent the discharge space from coalescing. The barrier rib is formed in a parallel pattern or a grid pattern having a line width of 0.5 to 2 mm and a height of 100 μm to 2 mm to have a line width of 1 to 10 mm and a length of 5 to 50 mm. Forming a phosphor layer on a surface of the lower plastic substrate including the partition wall; and forming an organic sealant on an outer surface of the upper plastic substrate and the lower plastic substrate to be the outer space of the discharge space. Suture of the upper plastic substrate and the lower plastic substrate Forming an electrode layer formed of an indium tin oxide (ITO) thin film or an indium zinc oxide (IZO) thin film on an inner surface or an outer surface thereof, and sequentially laminating a carbon tape and a copper tape on one surface of each electrode layer, respectively; And forming a vacuum exhaust pipe connected to the discharge space on the upper plastic substrate.

Here, the step of forming the partition wall to prevent the discharge space is bonded to the surface of the upper plastic substrate or the lower plastic substrate is formed in a hemispherical or cylindrical shape with a diameter and height of 200 ~ 5,000㎛, each partition spacing is It is arranged in the form of matrix so that it can be 1,000 ~ 10,000㎛, or it is formed in the form of a bar with a semicircular cross section with a diameter of 300 ~ 10,000㎛ and a length of 500 ~ 10,000㎛, each partition spacing of 1,000 ~ 10,000 Matrices arranged in the form of micrometers or parallel to each other, or formed in the form of a triangular pyramid or triangular prism having a width of 300 to 5,000 μm in a cross section and a height of 100 to 5,000 μm, each having a thickness of 1,000 to 7,000 μm. Or in the form of glass beads having a diameter of 10 ~ 2,000㎛ diameter, arranged in a uniformly distributed form so that each interval is 0.5 ~ 10mm Characterized in that.

In addition, the flexible display device according to the present invention includes the above-described flexible flat fluorescent lamp as a backlight light source.

The flat fluorescent lamp manufactured according to the present invention has sufficient flexibility to be used as a flexible display element, and can be used as a backlight of a liquid crystal display device as well as a flexible surface emitting fluorescent lamp light source. The driving power is discharged with the applied voltage of 1.0 to 5.0kV at the frequency of 1 to 40kHz. In terms of luminous efficiency, the luminance can be displayed up to 100cd / m ² at 1kHz and 500cd / m ² at 40kHz. It provides an effect that can be widely used in a display device having a.

In order to achieve the object of the present invention, a flexible flat fluorescent lamp includes an organic material for bonding the upper plastic substrate and the lower plastic substrate to each other while surrounding the outer portions of the upper plastic substrate and the lower plastic substrate having flexibility, and the upper plastic substrate and the lower plastic substrate. A barrier rib structure for ensuring a constant discharge space without the sealant, the upper plastic substrate and the lower plastic substrate bonded to each other, and an ITO thin film or an IZO thin film formed as an electrode outside the upper plastic substrate and the lower plastic substrate. And an electrode, a copper tape for connecting the electrode to an external alternating current discharge device, a carbon tape for preventing a short circuit, a phosphor coating layer for emitting a lamp in a discharge space, and the like.

Hereinafter, a flexible flat fluorescent lamp according to the present invention and a method of manufacturing the same will be described in detail with reference to the accompanying drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. The present embodiments are merely provided to make the disclosure of the present invention complete, and to fully convey the scope of the invention to those skilled in the art, and the present invention is defined by the scope of the claims. It will be.

1A and 1B are a perspective view and a cross-sectional view showing the structure of a flexible flat fluorescent lamp according to the present invention.

Referring to FIG. 1A, when the upper and lower plastic substrates 100 and 110 are arranged to face each other, the electrode layers 120 and 130 formed of ITO or IZO are respectively formed on the outer side of the upper and lower plastic substrates 100 and 110. It is provided on the surface, the vacuum exhaust pipe (tip, 170) is fixed on the upper plastic substrate 100 by the epoxy (Epoxy, 160) or sealant.

Here, hemispherical partition walls 140 are formed in a matrix shape on the lower plastic substrate 110, and a phosphor layer 150 is formed on the surface of the lower plastic substrate 110. In this case, the hemispherical partition walls 140 may be integrally provided with the lower plastic substrate 110, and the phosphor layer 150 may be a mixture of a sealant and a phosphor. The electrode layers 120 and 130 formed of ITO or IZO are formed inside or outside the upper and lower plastic substrates 100 and 110, but are illustrated here.

Referring to FIG. 1B, the periphery of the upper plastic substrate 100 and the lower plastic substrate 110 is sealed with an organic sealant 155. In FIG. 1A, the organic sealant 155 for sealing the upper and lower plastic substrates 100 and 110 is omitted.

Here, the upper and lower plastic substrates 100 and 110 are formed in a size of 40 × 40 mm to 80 × 80 mm, and polycarbonate (PC, polycarbonate), polyethylene naphthalate (PEN, polyethylene naphthalate) and polyethylene terephthalate (PET) are formed. , polyethylene terephthalate). Polycarbonate (PC) has excellent optical and mechanical properties. Polyethylene naphthalate (PEN) has a lower coefficient of thermal expansion than other plastics and is used in many display devices. Polyethylene terephthalate (PET) is a substrate with low cost and relatively good chemical resistance. Therefore, using any one selected from these substrates to form a substrate for a flexible flat fluorescent lamp having a thickness of 100 ~ 2000㎛. If the thickness of the substrate is too thin (less than 100㎛) it is difficult to support the shape of the panel, if it has a thickness of more than 2000㎛ because the flexible properties may be lost, a plastic substrate of appropriate thickness should be used. Next, the distance between the upper plastic substrate and the lower plastic substrate is preferably 200 to 10,000㎛.

Next, a vacuum exhaust pipe (tip) is connected to the upper plastic. At this time, the upper plastic and the vacuum exhaust pipe are bonded using epoxy or sealant. Epoxy or sealant used should be cured for 30 minutes at 150 ℃ before stabilizing. The vacuum pressure is set to 1 × 10 ⁻³ to 3 × 10 ⁻⁶ , and 100 to 600 Torr of neon-xenon mixed gas (Ne-5% Xe) is injected. Carbon tapes 180 and 190 are partially attached to one side of the electrode layer on the upper plate and the lower plastic plate of the gas-injected flexible surface emitting fluorescent lamp, and then the copper tapes 185 and 195 are attached thereto.

Next, a stable sealant and red (R), green (G), and blue (B) phosphors are mixed and applied to the lower plastic substrate in an appropriate ratio. The phosphor layer has a thickness of 30 to 500 µm and is cured by curing at 150 ° C. for 30 minutes. The partition wall is formed on the applied phosphor layer. When forming the partition wall, it can be formed by various partition structures and methods, and there is also a method of processing a plastic material into a hemispherical shape and fixing it on the phosphor layer. In addition, as shown in the drawings of the partition wall structure described below, the top plate or the bottom It may be bonded to a plastic substrate or may be formed integrally with the plastic substrate. In addition, variously designed bulkheads and their manufacturing methods are possible.

Since the structure and the formation method of the partition are one of the important techniques for achieving the object of the present invention will be described in detail below. The partition wall is to secure a space where gas discharge may occur by forming an appropriate space without the upper plastic substrate and the lower plastic substrate bonded to each other. Accordingly, the present invention provides a particular form and method for manufacturing a gas discharge function.

The partition wall formed between the upper plastic substrate and the lower plastic substrate may be manufactured by any structure and forming method so long as it can prevent adhesion between the appropriate discharge space and the upper and lower plates. Examples of the preferred barrier rib structure of the present invention are as follows.

2A and 2B are a cross-sectional view and a perspective view showing a partition structure according to a first embodiment of the present invention.

Referring to FIG. 2A, the lower plastic substrate 200 is provided to have a thickness of 100 to 2,000 μm, and the partition wall 230 is provided on an upper portion thereof. In this case, the partition wall 230 may be provided in a hemispherical shape or a cylindrical shape, and may be integrally provided with the lower plastic substrate 200.

Next, the phosphor layer 240 is provided on the lower plastic substrate 200 exposed by the partition wall 230.

Next, an organic sealant 260 is provided on the outer sides of the upper plastic substrate (not shown) and the lower plastic substrate 200 to secure a discharge space.

Next, the electrode layer 210 formed of ITO or IZO is provided on the surface of the lower plastic substrate 200 exposed to the outside.

Next, a copper tape 255 for connecting the electrode layer 210 to an external AC discharge device and a carbon tape 250 for short circuit prevention are provided at one side of the electrode layer 210.

Referring to FIG. 2B, the diameter D ₁ and the height h ₁ of the partition wall 230 are provided at 200 μm to 5,000 μm, and the intervals P ₁ are arranged in a matrix form of 1,000 μm to 10,000 μm. It can be seen that. By forming the barrier rib 230 structure on the substrate as described above, the phosphor layer 240 is coated on the substrate to increase the coating area of the phosphor layer 240 and to efficiently divide the discharge space to increase the emission luminance. There is an advantage.

3A and 3B are cross-sectional views and perspective views illustrating a partition structure according to a second embodiment of the present invention.

Referring to Figure 3a, the lower plastic substrate 300 is provided with a thickness of 100 ~ 2,000㎛, the partition wall 330 is provided on the top. In this case, the partition wall 330 may be provided in the form of a triangular pyramid or a triangular prism, and may be integrally provided with the lower plastic substrate 300.

Next, the phosphor layer 340 is provided on the lower plastic substrate 300 exposed by the partition wall 330.

Next, an organic sealant 360 is disposed outside the upper plastic substrate (not shown) and the lower plastic substrate 300 to secure a discharge space.

Next, the electrode layer 310 formed of ITO or IZO is provided on the surface of the lower plastic substrate 300 exposed to the outside.

Next, on one side of the electrode layer 310, a copper tape 355 for connecting the electrode layer 310 to an external AC discharge device and a carbon tape 350 for short circuit prevention are provided.

Referring to Figure 3b, the partition wall 330, the width (D ₂₎ 300 ~ 5,000㎛ and height (h ₂₎ is provided with a triangular pyramid or a triangular prism shape 100 ~ 5,000㎛, each distance (P ₂₎ is from 1,000 to It can be seen that they are arranged in a matrix form that becomes 7,000 μm. By forming the barrier rib 330 structure on the substrate as described above, the phosphor layer 340 is coated on the substrate to increase the coating area of the phosphor layer 340 and to efficiently divide the discharge space, thereby increasing the emission luminance. There is an advantage.

4 and 5 are perspective views showing the partition structure according to the third and fourth embodiments of the present invention.

4, the lower plastic substrate 400 is provided with a thickness of 100 ~ 2,000㎛, the partition wall 430 is provided on the top. At this time, the partition wall 430 is arranged in parallel with each other in the form of a bar (Bar) is provided in a semi-circular cross section.

Next, an electrode layer 410 formed of ITO or IZO is provided on a surface of the lower plastic substrate 400 exposed to the outside.

Next, a copper tape 455 for connecting the electrode layer 410 to an external AC discharge device is provided on one side of the electrode layer 410 and a carbon tape 450 for short circuit prevention.

Here, the partition wall 430 has a diameter (D ₃ ) and a height (h ₃ ) of 300 ~ 10,000㎛, is provided to have a length (W ₃ ) of 1,000 ~ 10,000㎛, each interval (P ₃ ) is 1,000 It can be seen that they are arranged in parallel with each other to be ~ 10,000㎛. By forming the barrier rib 430 structure on the substrate as described above, there is an advantage that the discharge space can be efficiently divided and the light emission luminance can be increased.

5, the lower plastic substrate 500 is provided with a thickness of 100 ~ 2,000㎛, the partition wall 530 is provided on the top. At this time, the partition wall 530 is arranged in a matrix form in the form of a bar (Bar) is provided in a semicircular cross-section.

Next, the electrode layer 510 formed of ITO or IZO is provided on the surface of the lower plastic substrate 500 exposed to the outside.

Next, a copper tape 555 for connecting the electrode layer 510 to an external AC discharge device and a carbon tape 550 for short circuit prevention are provided at one side of the electrode layer 510.

Here, the partition wall 530 has a diameter (D ₄ ) and a height (h ₄ ) of 300 ~ 10,000㎛, are provided to have a length (W ₄ ) of 500 ~ 10,000㎛, each interval (P _4, P ₅ ) Can be seen to be arranged in parallel with each other to be 1,000 ~ 10,000㎛. By forming the barrier rib 530 structure on the substrate as described above, there is an advantage that the discharge space can be efficiently divided and the light emission luminance can be increased.

6 is a perspective view showing a partition structure according to a fifth embodiment of the present invention.

Referring to FIG. 6, glass beads having a size of 10 μm to 2,000 μm are uniformly dispersed between the upper plastic substrate 610 and the lower plastic substrate 600 so as to have a distance of 0.5 to 10 mm. In this case, it is preferable to form the phosphor layer 650 on the lower plastic substrate 600 and then to disperse the glass beads.

7A and 7B are plan views illustrating a partition structure according to sixth and seventh embodiments of the present invention.

Referring to FIG. 7A, a lattice pattern is formed on a plastic substrate 700 with thin lines having a line width of 0.5 to 2 mm and a height of 100 μm to 2 mm, and a discharge space having a line width of 1 to 10 mm and a length of 5 to 50 mm. Secure 720. In this case, the lattice pattern becomes the entire plastic substrate 700 except for the discharge space 720. Therefore, the discharge space 720 is formed in the engraved shape on the plastic substrate 700. In addition, the plastic substrate 700 may be used as either an upper substrate or a lower substrate.

Referring to FIG. 7B, the plastic substrate 710 has a line width of 0.5 to 2 mm and a thin line having a height of 100 μm to 2 mm to form a pattern parallel to each other, and a discharge having a line width of 1 to 10 mm and a length of 5 to 50 mm. A space 730 is secured. In this case, the plastic substrate 710 may be used as either an upper substrate or a lower substrate.

8A and 8B are plan views illustrating a partition structure according to the eighth and ninth embodiments of the present invention.

FIG. 8A uses the plastic substrate 700 having the lattice-shaped partition wall of FIG. 7A as the upper substrate, and uses the plastic substrate 710 having the partition walls parallel to each other in FIG. 7B as the lower substrate, respectively. The flexible flat fluorescent lamp is configured such that the spaces 720 and 730 are arranged in a cross shape with each other, and FIG. 8B illustrates the flexible flat fluorescent lamp configured to arrange the discharge spaces 720 and 730 in parallel with each other.

9A, 9B, 10A, 10B, 11A, and 11B are perspective views and cross-sectional views illustrating a structure of a flexible flat fluorescent lamp according to the present invention and a method of manufacturing the same.

9A and 9B illustrate a magnesium oxide (MgO) thin film 800 and 810 on inner surfaces of the upper plastic substrate 820 and the lower plastic substrate 830 in the flexible flat fluorescent lamp structure according to FIGS. 1A and 1B, respectively. It shows that formed.

The magnesium oxide (MgO) thin films 800 and 810 are deposited in the discharge space of the flexible flat fluorescent lamp to protect the secondary electron emission and the plastic substrate inside the discharge space. Here, polyethylene naphthalate (PEN) is used as the upper plastic substrate and the lower plastic substrate of all the flexible surface emitting fluorescent lamps on which magnesium oxide (MgO) is deposited. This is because polycarbonate (PC, polycarbonate) may be vulnerable to impact of magnesium oxide (MgO) during the deposition of magnesium oxide (MgO).

The deposition condition of magnesium oxide (MgO) is a thin film height of 3000 ~ 6,000 Å, the deposition rate is 2 Å / s can be formed by the ion beam (E-beam) deposition method. The subsequent process is according to FIGS. 1A and 1B.

In addition, although only the hemispherical shape of the partition is shown, all the partitions of FIGS. 2A to 8B may be inserted.

10A and 10B illustrate a structure in which the electrode layer 930 of the lower plastic substrate 910 is directed toward the upper plastic substrate 900 in the flexible flat fluorescent lamp structure of FIGS. 1A and 1B.

The carbon tape 950 and the copper tape 955 connected to the electrode layer 930 of the lower plastic substrate 910 are provided in the same direction as the carbon tape 980 and the copper tape 985 on the upper plastic substrate 900 side. By doing so, the electrical contact between the carbon tape 950 and the copper tape 955 and the ITO or IZO electrode layer 930 may be improved, and the connection with the power supplied from the outside may be smoothly performed. .

11A and 11B illustrate a structure in which the electrode layer 1035 of the lower plastic substrate 1030 is directed toward the upper plastic substrate 1020 in the flexible flat fluorescent lamp structure of FIGS. 9A and 9B. Next, magnesium oxide (Mg) thin films 1010 and 1000 are formed on the inner surfaces of the lower plastic substrate 1030 and the upper plastic substrate 1020, respectively, so that secondary electron emission and a protection function of the plastic substrate can be performed. The carbon tape 1090 and the copper tape 1095 connected to the electrode layers 1035 of the lower plastic substrate 1030 are in the same direction as the carbon tape 1080 and the copper tape 1085 on the upper plastic substrate 1020. By providing, the electrical contact between the carbon tape 1090 and the copper tape 1095 and the ITO or IZO electrode layer 1035 can be improved, and the connection with the power supplied from the outside can be made smoothly. have. That is, since the power supplied from the outside can be connected in one direction, there is an advantage that can greatly simplify the manufacturing process.

12A to 12C are photographs showing luminance emitted by applying a voltage to the flexible flat panel fluorescent lamp according to the first embodiment of the present invention.

FIG. 12A illustrates luminance when the flexible flat panel fluorescent lamp including the partition structure according to the first embodiment (FIGS. 2A and 2B) is driven by a backlight light source of the flexible display device. The driving power source shows that when driving under the condition of 1kHz, 500V ~ 3.5kV, discharge starts at about 600V and reaches 100cd / m2 from 2.5kV.

12B shows the discharge start voltage according to the injection pressure while injecting the discharge gas Ne-Xe (5%) into the panel. As the pressure of the injection gas increases, the discharge start voltage increases. It can be seen that the injection pressure of the discharge gas should be 200torr or more for the discharge start voltage of FIG. 12A to appear.

12C is a photograph showing that the flexible flat fluorescent lamp according to the first exemplary embodiment of the present invention has a luminance of 100 cd / m 2 under the voltage application condition and the discharge gas injection condition of FIGS. 12A and 12B.

 13A and 13B are photographs showing luminance of emitting light by applying a voltage to the flexible flat panel fluorescent lamp according to the second exemplary embodiment of the present invention.

FIG. 13A illustrates luminance when the flexible flat panel lamp including the partition structure according to the second embodiment (FIGS. 3A and 3B) is driven by a backlight light source of the flexible display device. It is understood that when the driving power is set to 20 kHz and 3 kV, and the pressure of the discharge gas Ne-Xe (5%) is used at 200 torr, the emission luminance is 400 cd / m 2.

Fig. 13B is a photograph directly photographed showing the luminance of 400 cd / m 2 under the above conditions.

14 is a photograph showing luminance emitted by applying a voltage to a flexible flat panel fluorescent lamp according to a fifth exemplary embodiment of the present invention.

FIG. 14 illustrates a case where the flexible flat panel lamp including the barrier rib structure according to the fifth embodiment (FIG. 6) is driven by a backlight light source of the flexible display device. 2 mm glass beads were used, and the driving power was driven at 1 kHz and 3 kV. The light emission luminance at the time of driving is represented by 60 cd / m 2.

15 is a photograph showing luminance emitted by applying a voltage to a flexible flat panel fluorescent lamp according to an eighth or ninth embodiment of the present invention.

FIG. 15 illustrates a case where the flexible flat panel lamp including the partition structure according to the eighth or ninth embodiment (FIGS. 8A or 8B) is driven by a backlight light source of the flexible display device. After discharging only the discharge gas in the state in which the fluorescent substance was not apply | coated to the inner wall, it operated on the conditions of 1 kHz and 3 kV. The plasma discharge can be observed in the discharge space between the partition walls by driving by injecting only the discharge gas in a state in which the phosphor is not applied to the inner wall of the fluorescent lamp.

12A to 15, the flexible flat type flat lamp according to the present invention may exhibit high luminance, depending on the applied voltage and frequency, and it can be seen that the flexible flat lamp is smoothly formed between the partition walls. .

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments and can be modified in various forms, and having ordinary skill in the art to which the present invention pertains. It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1A and 1B are a perspective view and a cross-sectional view showing the structure of a flexible flat fluorescent lamp according to the present invention.

2A and 2B are a cross-sectional view and a perspective view showing a partition structure according to the first embodiment of the present invention.

3A and 3B are a cross-sectional view and a perspective view showing a partition structure according to a second embodiment of the present invention.

4 and 5 are perspective views showing a partition structure according to the third and fourth embodiments of the present invention.

6 is a perspective view showing a partition structure according to a fifth embodiment of the present invention.

7A and 7B are plan views illustrating partition structures according to sixth and seventh embodiments of the present invention.

8A and 8B are plan views illustrating a partition structure according to the eighth and ninth embodiments of the present invention.

9A, 9B, 10A, 10B, 11A, and 11B are perspective views and cross-sectional views illustrating a structure of a flexible flat fluorescent lamp according to the present invention and a method of manufacturing the same.

12A to 12C are photographs showing luminance of emitting light by applying a voltage to the flexible flat panel fluorescent lamp according to the first embodiment of the present invention.

13A and 13B are photographs showing luminance of emitting light by applying a voltage to a flexible flat panel fluorescent lamp according to a second exemplary embodiment of the present invention.

14 is a photograph showing luminance emitted by applying a voltage to a flexible flat panel fluorescent lamp according to a fifth embodiment of the present invention.

FIG. 15 is a photograph showing luminance emitted by applying a voltage to a flexible flat panel fluorescent lamp according to an eighth or ninth embodiment of the present invention; FIG.

Claims (19)

A flexible flat fluorescent lamp having a discharge space formed between a flexible upper plastic substrate and a lower plastic substrate, the organic sealant sealing an outer surface of the discharge space, a discharge gas and a phosphor layer injected into the discharge space. In Hemispherical, cylindrical, including a partition provided on the surface of the upper plastic substrate or the lower plastic substrate to prevent the discharge space is bonded, including a partition of the parallel pattern or grid pattern, or arranged in a matrix form, Comprising a partition of any one of the bar, triangular pyramid and triangular prism with a semicircular cross-section, or a partition of a glass bead with uniformly distributed glass, and at a frequency of 1 to 40 kHz of the driving power supply and 1 to 5 kV A flexible flat fluorescent lamp having a luminance of ˜400 cd / m 2. The method of claim 1, The upper plastic substrate and the lower plastic substrate are each made of one selected from polycarbonate (PC, polycarbonate), polyethylene naphthalate (PEN, polyethylene naphthalate) and polyethylene terephthalate (PET). Flexible flat fluorescent lamp. The method of claim 1, The upper plastic substrate and the lower plastic substrate are flexible flat fluorescent lamps, characterized in that each provided with a thickness of 100 ~ 2,000㎛. The method of claim 1, The distance between the upper plastic substrate and the lower plastic substrate is a flexible flat fluorescent lamp, characterized in that 200 ~ 10,000㎛. The method of claim 1, And a front electrode formed of an indium tin oxide (ITO) thin film or an indium zinc oxide (IZO) thin film on an inner surface or an outer surface of the upper plastic substrate and the lower plastic substrate, respectively. The method of claim 1, And a magnesium oxide (MgO) thin film deposited on an inner surface of the upper plastic substrate or the lower plastic substrate, respectively. The method of claim 1, The partition wall is a flexible flat fluorescent lamp, characterized in that the integral plastic formed by extrusion processing or injection molding the upper plastic substrate or the lower plastic substrate in the form of embossing. The method of claim 1, The partition wall is provided with a parallel pattern or grid pattern having a line width of 0.5 ~ 2mm and a height of 100㎛ ~ 2mm, characterized in that it is provided to ensure a discharge space having a line width of 1 ~ 10mm and a length of 5 ~ 50mm Flexible flat fluorescent lamp. The method of claim 1, The partition wall is provided in a hemispherical or cylindrical shape having a diameter and a height of 200 ~ 5,000㎛, the flexible flat fluorescent lamp, characterized in that arranged in a matrix form each interval of 1,000 ~ 10,000㎛. The method of claim 1, The partition wall has a diameter of 300 to 10,000 μm and a length of 500 to 10,000 μm and is provided in the form of a bar having a semi-circular cross section, and each matrix has a matrix of 1,000 to 10,000 μm or parallel to each other. Flexible flat fluorescent lamps, characterized in that arranged. The method of claim 1, The partition wall has a cross-section width of 300 ~ 5,000㎛, is provided in the form of a triangular pyramid or triangular prism having a height of 100 ~ 5,000㎛, the flexible plate, characterized in that arranged in a matrix form that each interval is 1,000 ~ 7,000㎛ Type fluorescent lamp. The method of claim 1, The partition wall is provided in the form of a glass bead having a diameter of 10 ~ 2,000㎛, flexible flat fluorescent lamp, characterized in that arranged in a uniformly distributed form such that each interval is 0.5 ~ 10mm. Arranging the flexible upper plastic substrate and the lower plastic substrate to have a discharge space at a predetermined interval; A barrier rib is formed on the surface of the upper plastic substrate or the lower plastic substrate so as to prevent the discharge space from adhering to each other. The barrier rib is formed in a parallel pattern or a lattice pattern having a line width of 0.5 to 2 mm and a height of 100 μm to 2 mm. Securing a discharge space having a line width of ˜10 mm and a length of 5 to 50 mm; Forming a phosphor layer on a surface of the lower plastic substrate including the partition wall; Sealing the periphery of the upper plastic substrate and the lower plastic substrate to be the outer space of the discharge space with an organic sealant; Forming an electrode layer including an indium tin oxide (ITO) thin film or an indium zinc oxide (IZO) thin film on an inner surface or an outer surface of the upper plastic substrate and the lower plastic substrate; Sequentially stacking carbon tapes and copper tapes on one surface of each electrode layer; And And forming a vacuum exhaust pipe connected to the discharge space on the upper plastic substrate. Arranging the flexible upper plastic substrate and the lower plastic substrate to have a discharge space at a predetermined interval; A barrier rib is formed on the surface of the upper plastic substrate or the lower plastic substrate so that the discharge space is not bonded. The barrier rib is formed in a hemispherical shape or a cylindrical shape having a diameter and a height of 200 μm to 5,000 μm. Arranging in matrix form such that it is [mu] m; Forming a phosphor layer on a surface of the lower plastic substrate including the partition wall; Sealing the periphery of the upper plastic substrate and the lower plastic substrate to be the outer space of the discharge space with an organic sealant; Forming an electrode layer including an indium tin oxide (ITO) thin film or an indium zinc oxide (IZO) thin film on an inner surface or an outer surface of the upper plastic substrate and the lower plastic substrate; Sequentially stacking carbon tapes and copper tapes on one surface of each electrode layer; And And forming a vacuum exhaust pipe connected to the discharge space on the upper plastic substrate. Arranging the flexible upper plastic substrate and the lower plastic substrate to have a discharge space at a predetermined interval; A barrier rib is formed on the surface of the upper plastic substrate or the lower plastic substrate so as to prevent the discharge space from adhering to each other. The barrier rib has a diameter of 300 to 10,000 μm and a height of 500 to 10,000 μm and a cross section of a semicircular shape. Forming in a shape, and arranging each partition wall in a form of parallel to each other or a matrix having a thickness of 1,000 to 10,000 μm; Forming a phosphor layer on a surface of the lower plastic substrate including the partition wall; Sealing the periphery of the upper plastic substrate and the lower plastic substrate to be the outer space of the discharge space with an organic sealant; Forming an electrode layer including an indium tin oxide (ITO) thin film or an indium zinc oxide (IZO) thin film on an inner surface or an outer surface of the upper plastic substrate and the lower plastic substrate; Sequentially stacking carbon tapes and copper tapes on one surface of each electrode layer; And And forming a vacuum exhaust pipe connected to the discharge space on the upper plastic substrate. Arranging the flexible upper plastic substrate and the lower plastic substrate to have a discharge space at a predetermined interval; A barrier rib is formed on the surface of the upper plastic substrate or the lower plastic substrate so that the discharge space is not bonded to each other. The barrier rib has a width of 300 μm to 5,000 μm and a height of 100 μm to 5,000 μm. Arranging each of the intervals in a matrix form of 1,000 to 7,000 μm; Forming a phosphor layer on a surface of the lower plastic substrate including the partition wall; Sealing the periphery of the upper plastic substrate and the lower plastic substrate to be the outer space of the discharge space with an organic sealant; Forming an electrode layer including an indium tin oxide (ITO) thin film or an indium zinc oxide (IZO) thin film on an inner surface or an outer surface of the upper plastic substrate and the lower plastic substrate; Sequentially stacking carbon tapes and copper tapes on one surface of each electrode layer; And And forming a vacuum exhaust pipe connected to the discharge space on the upper plastic substrate. Arranging the flexible upper plastic substrate and the lower plastic substrate to have a discharge space at a predetermined interval; A barrier rib is formed on the surface of the upper plastic substrate or the lower plastic substrate to prevent the discharge space from adhering to each other. The barrier rib is formed in the shape of a glass bead having a diameter of 10 to 2,000 μm, and the interval is 0.5 to 10 mm. Arranging in a distributed form; Forming a phosphor layer on a surface of the lower plastic substrate including the partition wall; Sealing the periphery of the upper plastic substrate and the lower plastic substrate to be the outer space of the discharge space with an organic sealant; Forming an electrode layer including an indium tin oxide (ITO) thin film or an indium zinc oxide (IZO) thin film on an inner surface or an outer surface of the upper plastic substrate and the lower plastic substrate; Sequentially stacking carbon tapes and copper tapes on one surface of each electrode layer; And And forming a vacuum exhaust pipe connected to the discharge space on the upper plastic substrate. The method according to any one of claims 13 to 17, The phosphor layer may have a thickness of 30 μm to 500 μm on an organic sealant applied on the upper plastic substrate or the lower plastic substrate, or may be mixed with an organic sealant to 30 to 500 μm on the upper plastic substrate or the lower plastic substrate. Forming the thickness of the flexible flat fluorescent lamp manufacturing method characterized in that the curing for 30 minutes at 150 ℃. 19. A hemispherical, cylindrical, semicircular bar-shaped, triangular pyramid and triangular prism made by the method of any one of claims 13 to 18, comprising partitions of a pattern or lattice pattern parallel to each other, or arranged in a matrix form. A flexible display device comprising a flexible flat panel fluorescent lamp including a partition of any one selected from among a type or a uniformly dispersed glass bead type partition.

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