JP2001155689A - Flat type rare gas fluorescent lamp device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat type rare gas fluorescent lamp device that can reinforce a mechanical strength of a second member in the flat type rare gas fluorescent lamp without damaging a luminous property. SOLUTION: A flat type of rare gas fluorescent lamp PL comprises a first member 1 which is substantially flat-shaped with translucency, a second member 2 consisted by forming an luminous layer 8 into an inner surface of wall parts 4 while integrally forming a plurality of wall parts 4 having a space part 3 in the shape of groove in parallel by inserting a connection part 5 into it, a rare gas sealed into an inner space formed by air-tightly sealing and attaching each of the circumference parts of the first and the second members each other, and external electrodes 9, 10 formed in a state of being spaced apart from each other along an extending direction of the space part 3 in the shape of groove into each of the wall parts 4 of the second member 2, wherein the outer surface of the wall parts of the PL is coated with the package 12 having insulation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat rare gas fluorescent lamp device, and more particularly to an improvement of a flat rare gas fluorescent lamp device applied to a backlight light source of a liquid crystal display device.

[0002]

2. Description of the Related Art The applicant has previously proposed a rare gas discharge lamp DL shown in FIG. In the drawing, A is a straight tubular envelope which is hermetically sealed by a glass bulb, for example, and has one or two or more kinds of fluorescent materials such as a rare earth phosphor and a halophosphate phosphor on its inner surface. A light emitting layer B including a body is formed. In particular, the light emitting layer B is provided with an aperture portion (a portion where the light emitting layer is not formed) Ba having a predetermined opening angle over substantially the entire length. The sealing structure of the envelope A is formed by, for example, a so-called top seal that heats a desired portion of the glass bulb while reducing the diameter of the glass bulb and fusing the glass bulb. It can also be constituted by sealing a plate. A predetermined amount of rare gas such as xenon, krypton, neon, helium or the like which does not contain metal vapor such as mercury is enclosed in the enclosed inner space of the envelope A alone or in a predetermined amount. It is desirable to enclose a rare gas as a component. Further, a pair of strip-shaped external electrodes C and D made of a metal member are provided on the outer peripheral surface of the envelope A, with the first and second openings E and D.
They are spaced apart from each other so that F is formed.

The rare gas discharge lamp DL has external electrodes C and D
, A rare gas discharge occurs, and light is emitted from the light emitting layer B. Light emitted from the light-emitting layer B is mainly emitted to the outside from the first opening E through the aperture Ba. In particular, this rare gas discharge lamp D
Since no mercury is used for L, the light quantity rises sharply after lighting, and a large light quantity can be obtained simultaneously with lighting.

Accordingly, the rare gas discharge lamp DL is not only suitable as an original reading light source for OA equipment such as a facsimile, an image scanner, and a copying machine, but also, for example, as shown in FIG.
The application of a liquid crystal display device as shown in (1) to a backlight light source has been attempted.

This liquid crystal display device comprises a light guide plate L formed of, for example, an acrylic resin plate, a liquid crystal panel LCD disposed on the light emitting surface side of the light guide plate L, and a light guide plate L and the liquid crystal panel LCD. It comprises a light diffusing plate DB arranged between them and rare gas discharge lamps DL, DL arranged on opposite end faces La, Lb of the light guide plate L. In particular, in the rare gas discharge lamp DL, the first opening E is provided at the end surfaces La, L with respect to the light guide plate L.
b.

According to this liquid crystal display device, the light emitted from the rare gas discharge lamps DL, DL is applied to the end faces La, L of the light guide plate L.
b, the light is introduced into the light guide plate L, is reflected inside, and is incident (irradiated) on the liquid crystal panel LCD from the light emission surface side via the light diffusion plate DB. Thus, a desired image is displayed on the liquid crystal panel LCD.

However, in such a liquid crystal display device, since the backlight is of the edge light type, the use efficiency of light emitted from the rare gas discharge lamp DL is insufficient. Therefore, there is a problem that the brightness of the liquid crystal panel LCD cannot be sufficiently increased, and display quality is impaired.

For example, a rare gas discharge lamp DL having an outer diameter of an envelope A of 10 mm is connected to an end face La of a light guide plate L of 12 inches.
When the light guide plate L is arranged and lit, the luminance of the central portion of the light guide plate L is about 3500 (cd / m ² ), and 5000 (cd / m ² ) required for a liquid crystal display device of this type.
m ² ). The required luminance values are obtained when a cold cathode fluorescent lamp (a fluorescent lamp that excites and emits a light-emitting layer with mercury resonance lines) is used as a light source.

Further, for example, the rare gas discharge lamps DL having the outer diameter of the envelope A of 8 mm are connected to the end faces La,
When the light guide plate L is turned on, the brightness of the central portion of the light guide plate L is about 6000 (cd / m ² ), and 7000 (cd / m ² ) required for a liquid crystal display device of this kind.
² ) It is less than the brightness value.

[0010]

Accordingly, the present applicant has
First, in order to solve such a problem, a flat rare gas fluorescent lamp capable of relatively equalizing the luminance distribution and increasing the central luminance has been proposed.

The flat rare gas fluorescent lamp PL is configured, for example, as shown in FIGS. In FIG. 1, reference numeral 1 denotes a light-transmitting substantially flat first member, which is formed of a light-transmitting rectangular glass plate or ceramic plate. Reference numeral 2 denotes a second member, in which a plurality of wall surfaces 4 each having a groove-shaped space 3 inside are integrally formed in parallel through a connecting portion 5 and a substantially circular portion is formed on the top of the connecting portion 5. The column-shaped protrusion 6 is formed integrally with the surface including the peripheral edge 2 a of the second member 2 so as to be substantially the same height or slightly lower. Also, the second
An exhaust pipe 7 is connected to a part of the wall 4 of the member 2, and a light emitting layer 8 made of a phosphor is formed on the inner surface of each wall 4.

In particular, external electrodes 9 and 10 made of a metal member are provided on the outer surfaces of the respective wall surfaces 4 of the second member 2.
Are formed apart from each other along the direction in which the groove-shaped space 3 extends. The external electrodes 9 and 10 are formed by forming an adhesive layer on a metal foil of, for example, aluminum, silver, copper, nickel, or the like, cutting the metal foil into a predetermined shape, and using the adhesive layer on the outer surface of the wall portion 4. It is configured by sticking.

Further, the first and second members 1 and 2 seal the peripheral portion of the first member 1 and the peripheral portion 2a of the second member 2 with a low melting point glass such as frit glass. It is hermetically sealed by the attaching member 11.
At this time, the distal end of the protruding portion 6 of the second member 2 is in contact with the inner surface of the opposing first member 1 (or approaches through a slight gap). Then, in the internal space including the groove-shaped space portion 3 formed by sealing the first and second members 1 and 2, xenon containing no metal vapor such as mercury is used by using the exhaust pipe 7. A predetermined amount of a rare gas such as krypton, neon, helium or the like is sealed alone or mixed.

According to this proposal, the first and second members 1 and 2
Since a plurality of groove-shaped spaces 3 are formed in parallel at substantially constant intervals inside the sealing structure formed by 2, a high-frequency voltage is applied to the external electrodes 9 and 10 formed on the outer surface of the wall surface 4. By applying and turning on the light, high-luminance light can be obtained from the light emitting surface 1a of the first member 1, and the uniformity of the luminance distribution can be increased. Therefore, for example, when the present invention is applied to a liquid crystal display device, excellent image display becomes possible, and improvement in display quality can be expected.

The first member 1 is formed by forming a translucent member in a substantially flat shape, and furthermore, as a discharge space along the light emitting surface 1a of the first member 1. Since the plurality of groove-shaped spaces 3 are formed, a planar light source that can efficiently emit light from the light emitting surface 1a can be obtained.

However, although the flat rare gas fluorescent lamp PL is excellent as a light source for a backlight of a liquid crystal display, for example, as described above, it has the following new problem.

That is, in the flat rare gas fluorescent lamp PL, the light emission characteristics are affected by the thickness of the wall portion 4 of the second member 2. For example, the thinner the wall portion 4, the more desirable light emission characteristics are expected. And it is not possible to expect sufficient light emission characteristics as the wall thickness increases.
The thinner the wall thickness, the higher the desired emission characteristics with higher luminance can be obtained. However, if the thickness of the wall portion 4 is reduced thinly in order to improve the emission characteristics, the mechanical strength of the second member 2 decreases. However, there is a problem that the product is easily damaged by careless application of mechanical shock during handling after commercialization. On the other hand, if the thickness of the wall surface portion 4 is made thick enough to obtain a sufficient mechanical strength, the above-mentioned problem is solved, but desired emission characteristics cannot be obtained.

Therefore, an object of the present invention is to provide a flat rare gas fluorescent lamp device which can reinforce the mechanical strength of the second member in the flat rare gas fluorescent lamp without deteriorating the emission characteristics. To provide.

[0019]

SUMMARY OF THE INVENTION Accordingly, in order to achieve the above-mentioned object, the present invention provides a light-transmitting, substantially flat first member and a plurality of wall portions having a groove-shaped space. Are integrally formed in parallel through a connecting portion, and the second member having the light emitting layer formed on the inner surface of the wall surface portion and the respective peripheral portions of the first and second members are hermetically sealed with each other. A rare gas sealed in the internal space formed by sealing, and an external electrode formed on the outer surface of each wall surface of the second member so as to be separated from each other along a direction in which the groove-shaped space extends. Wherein the outer surface of the wall portion is covered with an insulating package.

According to a second aspect of the present invention, there is provided a substantially flat first member having a light-transmitting property, a flange portion at a peripheral edge portion, and a groove-shaped space portion inside the flange portion. A second member having a plurality of wall portions integrally formed in parallel through a connecting portion, and a light emitting layer formed on the inner surface of the wall portion; a peripheral portion of the first member; A rare gas sealed in an internal space formed by hermetically sealing the flange portion of the second member with each other, and an outer surface of each wall surface of the second member along a direction in which the groove-shaped space extends. And external electrodes formed separately from each other, and an outer surface of the wall portion is covered with an insulating package.

According to a third aspect of the present invention, there is provided a substantially flat first member having a light-transmitting property, and a plurality of wall portions having a groove-shaped space portion having at least one open end. A second member having a light emitting layer formed on the inner surface of the wall surface, and a groove-shaped member formed at one end of the wall surface of the second member. An almost flat third seal sealed so that the opening of the space is closed.
A rare gas sealed in an internal space formed by hermetically sealing the respective peripheral portions of the first, second, and third members with each other; An outer surface is provided with external electrodes formed apart from each other along a direction in which the groove-shaped space extends, and an outer surface of the wall is covered with an insulating package.

Further, a fourth invention of the present invention is characterized in that the first member is constituted by a glass plate or a ceramic plate having translucency. A sixth aspect of the present invention is characterized in that the member is formed of a dielectric material, and the second member is formed of a glass member such as borosilicate glass, barium glass, lead glass, and soda glass. According to a seventh aspect of the present invention, the first and second aspects
Is characterized in that the peripheral edge of each member is hermetically sealed with low melting point glass.

An eighth invention of the present invention is characterized in that said light emitting layer is formed of one kind of phosphor or a mixed phosphor obtained by mixing a plurality of kinds of phosphors. Is characterized in that a rare gas containing mercury-free xenon gas as a main component is sealed in an internal space defined by the first and second members.

According to a tenth aspect of the present invention, the package is formed by molding using a thermoplastic resin or a thermosetting resin.
Characterized in that the member and the thermoplastic resin or thermosetting resin are integrated with each other.
At least a box having a size capable of accommodating the second member and having an opening above, and an insulating member injected into the box, and a wall portion of the second member accommodated in the box and the box The second member is integrated with the box and the insulating member by enriching the insulating member with the space portion.

Further, according to a twelfth aspect of the present invention, the package includes a box having a size capable of accommodating at least the second member and having an upper opening, and an insulating member previously injected into the box. The second member is integrated with the box and the insulating member by contacting the insulating member with the outer surface of the wall by housing the second member in the box. 13. The invention according to a thirteenth aspect, wherein the package comprises at least an insulating box formed in a shape substantially following the outer surface of the wall of the second member, and an adhesive layer formed on the inner surface of the box. The second member and the box are integrated by housing the second member in the body and bonding the outer surface of the wall portion and the inner surface of the box with an adhesive layer.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of a flat rare gas fluorescent lamp device according to the present invention will be described with reference to FIGS. In the figure, PL is a flat type rare gas fluorescent lamp, which is configured as follows.

That is, reference numeral 1 denotes a light-transmitting, substantially flat first member which is formed of a light-transmitting rectangular glass plate or a ceramic plate. Recommended. Reference numeral 2 denotes a second member, in which a plurality of wall surfaces 4 each having a groove-shaped space 3 inside are integrally formed in parallel through a connecting portion 5 and a substantially circular portion is formed on the top of the connecting portion 5. The column-shaped protrusion 6 is provided on the periphery 2 of the second member 2.
It is integrally formed so as to have the same height or slightly lower eyes as the surface including a. It is recommended that the shape of the protruding portion 6 be cylindrical. The height from the bottom surface 4a of the wall portion 4 to the peripheral portion 2a is set to be higher than the height from the bottom portion 4a of the wall portion 4 to the top of the connecting portion 5, but is set to the same height. In this case, the protrusion 6 is not formed.

Although the cross-sectional shape of the wall portion 4 of the second member 2 is substantially trapezoidal, it may be rectangular or trapezoidal dish-shaped. Also, the protrusion 6
Is formed partially on the top of the connecting portion 5, and the number of the formed portions is set to an appropriate number depending on the strength when the first and second members 1 and 2 are sealed as described later. In order to further increase the strength, the protruding portion 6 can be formed in an elongated wall shape along the groove-shaped space portion 3,
If there is no problem in strength, the protrusion 6 can be omitted. An exhaust pipe 7 is connected to a part of the wall surface portion 4 of the second member 2. However, when the respective groove-shaped space portions 3 are formed independently of each other, the respective space portions 3 are formed. Needs to be provided with an exhaust pipe 7.

On the inner surface of each of the wall portions 4 of the second member 2, a light-emitting layer made of one kind of a rare earth phosphor, a halophosphate phosphor, or a mixture of plural kinds of phosphors is used. External electrodes 9 and 10 made of a metal member are formed on the outer surface of each wall portion 4 so as to be separated from each other along the direction in which the groove-shaped space 3 extends. The external electrodes 9 and 10 are formed by forming an adhesive layer on a metal foil such as aluminum, silver, copper, nickel or the like,
This metal foil cut into a predetermined shape is formed by adhering to the outer surface of the wall portion 4 using an adhesive layer, or a conductive paste containing a metal powder such as silver, copper, or carbon is screened. It is formed by printing, spraying, applying, or metal depositing. The external electrodes 9 and 10 are preferably formed on the wall 4 after sealing the first and second members 1 and 2 to be described later and performing an exhaust process. Depending on the situation, it may be performed before sealing or before exhaust processing.

The external electrodes 9, 10 adjacent to each other among the external electrodes 9, 10 are used when the flat rare gas fluorescent lamp device PLD is incorporated in a lighting device described later.
They are connected so as to have the same potential, or can be connected so as to have the same potential. Specifically, the external electrodes 9 and 10 adjacent to each other are directly connected by a conductive member, or are directly connected by a constituent member of the external electrode itself. Alternatively, lead terminals (not shown) are derived from ends of external electrodes adjacent to each other,
It is configured such that adjacent external electrodes can be connected to have the same potential. In addition, the lead terminals extend integrally with the constituent members of the external electrodes, or are formed as separate members, and are electrically and mechanically connected to the ends of the external electrodes 9 and 10. You can also.

The above-mentioned first and second members 1 and 2 seal the peripheral portion of the first member 1 and the peripheral portion 2a of the second member 2 with a sealing member made of low melting point glass such as frit glass. 1
1 is hermetically sealed. At this time,
The tip of the protruding portion 6 of the second member 2 is opposed to the first
(Or approached via a slight gap). Then, the interior space including the groove-shaped space portion 3 formed by sealing the first and second members 1 and 2 is provided with an exhaust pipe 7 so that xenon containing no metal vapor such as mercury is used. A predetermined amount of rare gas such as krypton, neon, helium or the like is sealed alone or mixed, but it is preferable to fill a rare gas containing xenon gas as a main component.

In particular, as a constituent member of the above-mentioned second member 2, for example, the volume resistivity at 150 ° C. is 1 × 10
⁹ is a Ωcm or more, silicon oxide, borosilicate glass free systems lead oxide as a main component boron (hereinafter, conveniently BFK
(Referred to as glass). This BFK glass is
For example, silicon oxide (67.6%), alumina (4%), boron oxide (18%), sodium oxide (1%), potassium oxide (8%), lithium oxide (1%), titanium oxide (0.4%) %). In addition, lead glass, soda glass, barium glass, and the like can be applied. This barium glass is made of, for example, an oxide of silicic acid, alumina, boric acid, potassium, barium, calcium, or the like. It is desirable that the thickness of these glasses be as small as mechanical strength is acceptable,
A range of 0.7 mm is recommended, but a thickness exceeding 0.7 mm can be set depending on the application and expected characteristics. The volume resistivity depends on the power consumption of the flat rare gas fluorescent lamp PL (in the case where the volume resistance does not become extremely low due to thermal runaway during the operation of the second member 2), the volume resistivity is as described above. It is also possible to set a low resistance value, and it is also possible to use a glass member other than the above.

Although any glass member can be used as the first member 1 as long as it has translucency, the first member 1 and the second member 2 are sealed by the sealing member 11. Therefore, it is desirable to use the same glass member as the second member 2. The first member 1 includes first and second members 1,
2 is sealed and filled with a rare gas, the interior space is configured to have a negative pressure, and the atmospheric pressure acts on the light emitting surface 1a. Required. Therefore, as the thickness of the first member 1 increases, the mechanical strength can be increased, which is desirable. However, since application to liquid crystal display devices is required to be lighter and thinner,
An appropriate thickness is, for example, in the range of 0.7 to 3.5 mm, and about 1.0 mm is recommended.

Further, in the flat rare gas fluorescent lamp PL thus configured, at least the outer surface of the second member 2 is reinforced by a package 12 having an insulating property so that the mechanical strength of the second member 2 is reinforced. Mold coated. The component of the package 12 is made of, for example, a hot melt having thermoplasticity such as polyamide resin or a resin having thermosetting properties such as silicone resin. In particular, in the illustrated example, all the outer surfaces of the second member 2 and the side surfaces of the first member 1 are covered with the package 12, and the thickness of the covering is the thickness of the second member 2 and the shape of the wall portion 4. , The length and the like of the protrusion 6.

The flat rare gas fluorescent lamp device PLD thus configured is manufactured, for example, as shown in FIGS. First, the second member 2 is formed by using, for example, a concave forming jig FA and a convex forming jig FB as shown in FIG. The forming jig FA has a plurality of recesses Fa, and the forming jig FB has protrusions Fb at portions corresponding to the recesses Fa. After the plate-like glass member P in the heat-softened state is arranged between these forming jigs FA and FB, the forming jig F
A and FB are moved closer to each other, so that the glass member P is formed in the concave portions Fa, FB of the forming jigs FA, FB.
The second member 2 shown in FIG. 4 is manufactured so as to follow the projection Fb. In addition, the glass member P is formed by forming jigs FA, F
After being placed between B, it can be heated and softened. Next, as shown in FIG. 4, a hole is formed at the end of the bottom surface portion 4a of the wall surface portion 4 of the second member 2, and an exhaust pipe 7 is connected to this portion.

Next, as shown in FIG. 6, a light-emitting layer 8 is formed on the inner surface of the wall portion 4 of the second member 2, and the entire peripheral portion 2a and a part of the top portion of the connecting portion 5 (for example, a projecting portion) The sealing member 11 is attached to a part of the top where 6 is present as shown by hatching in the figure. It is desirable that glass beads having a fine particle diameter that does not melt at the sealing temperature be mixed into the sealing member 11. Next, the flat first member 1 shown in FIG. 3 is superimposed on the second member 2 and inserted into the heating furnace.
At the same time, a weight is given to each overlapping portion. In this state, the tip of the protruding portion 6 abuts or approaches the inner surface of the opposing first member 1. When glass beads are mixed into the sealing member 11, undesired protrusion of the sealing member 11 can be reduced even if a weight is applied to the overlapping portion by the interposition of the glass beads. As a result, the first and second members 1 and 2 are hermetically sealed by the sealing member 11, and a sealing structure is manufactured.

Next, as shown in FIG. 7, the sealing structure is placed on the mounting table M of the exhaust device, and the exhaust pipe 7 is connected to the exhaust head EX. Then, the opening and closing valve (not shown) is opened to connect to a vacuum system, and the sealing structure is heated. As a result, impurity gases such as air in the sealing structure are discharged. Next, the exhaust head EX is switched to a rare gas filling system, a predetermined amount of the rare gas is sealed in the internal space of the sealing structure through the exhaust pipe 7, and the exhaust pipe 7 is set to a short distance within an allowable range. Seal off (melt). Next, the sealing assembly is taken out of the exhaust device, and external electrodes 9 and 10 are formed on the outer surfaces of all the wall surfaces 4 of the second member 2 so as to be separated from each other along the direction in which the groove-shaped space 3 extends. I do. Next, lead terminals (not shown) are soldered to the ends of the external electrodes 9 and 10,
The connection is made by a conductive adhesive or the like. Thus, the flat rare gas fluorescent lamp PL is manufactured. Next, as shown in FIG. 8, the flat rare gas fluorescent lamp PL is accommodated in, for example, a first mold MC1 having an injection hole N at the bottom so that the first member 1 is on the upper side, and The second mold MC2 is arranged on the peripheral portion of the member 1 of FIG. In this state, the insulating member (resin material) 12 such as hot melt in a molten state is injected into the cavity of the mold from the injection hole N and hardened, so that the flat rare gas fluorescent lamp device shown in FIGS. P
LD is manufactured.

This flat rare gas fluorescent lamp device PLD
Is applied to, for example, the liquid crystal display device shown in FIGS. In the figure, LCD is a liquid crystal panel, DB is a light diffusing plate, and HA is a lighting device for generating a pulsed high-frequency voltage. The light diffusing plates DB, DB are arranged on the light emitting surface side 1a of the flat rare gas fluorescent lamp device PLD. A liquid crystal panel LCD is provided. The lighting device HA includes, for example, a transformer TR having a primary coil TRp and a secondary coil TRs;
A switching element QA such as a field-effect transistor connected in series to the primary coil TRp, a drive circuit PD for applying a drive signal to the switching element QA, and a primary coil TRp connected between the primary coil TRp of the transformer TR and the ground. A DC power supply EB is connected to the input side of the lighting device HA, and the external electrodes 9 and 10 of the flat rare gas fluorescent lamp PL are connected to the output side in parallel. I have. In particular, as shown in FIG. 9, of the external electrodes 9 and 10, the external electrodes 9 and 10 adjacent to each other are used.
Are connected to lead terminals led out from the external electrodes 9 and 10 via the package 12 so as to have the same potential, and are alternately set to a high potential H and a low potential L. The external electrodes 9 and 10 which are located on the outermost side of the wall surface portion 4 and do not have adjacent external electrodes are connected to the lighting device HA via lead terminals, respectively, so as to have a low potential L and a high potential H. Have been.

In the illustrated example, one flat rare gas fluorescent lamp device PLD is configured to be lighted by one lighting device HA. It is also possible to combine the lighting devices HA for every set of external electrodes, or to combine two or three pairs of external electrodes into a single lighting device HA. Also in such a case, care is taken so that the adjacent external electrodes 9 and 10 have the same potential.

This liquid crystal display operates as follows.
First, when the DC power supply EB is connected to the input side of the lighting device HA, the capacitor CA is charged. In this state,
When a square wave drive signal (high level) is applied from the drive circuit PD to the gate of the switching element QA, the switching element QA is turned on, a saw-tooth current flows through the primary coil TRp of the transformer TR, and Electromagnetic energy is stored in the primary coil TRp. next,
When the drive signal from the drive circuit PD goes to a low level, the secondary coil TRs is pulsed by the winding ratio of the primary coil TRp and the secondary coil TRs based on the action of the electromagnetic energy accumulated in the primary coil TRp of the transformer TR. High-frequency voltage is generated and the flat rare gas fluorescent lamp device PLD
Are applied to the respective external electrodes 9 and 10. As a result, a discharge is generated between the respective external electrodes and the light emitting layer 8 is turned on, and the light from the light emitting layer 8 enters the liquid crystal panel LCD from the light emitting surface 1a of the first member 1 via the light diffusing plate DB. Then, a desired image is displayed.

According to this embodiment, a plurality of groove-shaped space portions 3 are provided inside the sealing structure formed by the first and second members 1 and 2.
Are formed in parallel at substantially constant intervals, so that a pulsed high-frequency voltage is applied to the external electrodes 9 and 10 formed on the outer surface of the wall portion 4 to turn on the first state.
It is possible to obtain high-luminance light from the light emitting surface 1a of the member 1, and it is also possible to increase the luminance uniformity depending on the number of the space portions 3 and the like. Therefore, for example, when applied to the liquid crystal display device shown in FIG. 9, excellent image display is possible, and improvement in display quality can be expected.

The first member 1 is a member having a light transmitting property.
For example, a transparent glass member is formed in a substantially flat shape, and a plurality of groove-shaped spaces 3 as discharge spaces are formed along the light emitting surface 1a of the first member 1. Therefore, a flat light source capable of efficiently emitting flat light from the light emitting surface 1a can be obtained.

Further, since the light emitting surface 1a of the first member 1 is formed in a substantially flat shape, when applied to, for example, the liquid crystal display device shown in FIG. 9, the liquid crystal panel LCD (or light diffusion plate DB) Can be arranged close to or in close contact with the back side of the device. Therefore, the size of the liquid crystal display device can be made relatively thin, and the weight and thickness can be reduced.

In particular, all the outer surfaces of the second member 2 are covered with an insulating package 12 so as to reinforce the mechanical strength of the second member 2, so that the wall surface thereof is The thickness of the portion 4 can be reduced. Therefore,
Light emission characteristics can be improved, luminance can be further increased, and starting characteristics can be improved.

Further, since the external electrodes 9 and 10 are covered with the package 12 having excellent insulating properties, the insulating process with other components when applied to the liquid crystal display device shown in FIG. 9 becomes easy. , Making the installation work easier.

The plurality of wall portions 4 of the second member 2
Since a groove-shaped space portion 3 is formed in the inside and the light emitting layer 8 is formed in the inside, the external electrodes 9 and 10 are formed on the outer surface of the wall surface portion 4 so as to be separated from each other. The light emitting layer 8 can be effectively stimulated based on the discharge between the external electrodes, and can emit light efficiently. Therefore, the amount of light emitted from the first member 1 can be increased.

The plurality of wall portions 4 of the second member 2
Since the cross-sectional shape is substantially trapezoidal, the discharge distance between the external electrodes 9 and 10 can be increased.
Therefore, the luminous efficiency of the light emitting layer 8 can be improved, and in addition to the fact that the gap G is formed between the connecting portion 5 of the second member 2 and the first member 1, the connection is improved. The shadow generated on the light emitting surface portion of the first member 1 corresponding to the portion 5 can be reduced, and the uniformity of luminance can be improved.

In the sealing structure formed by the first and second members 1 and 2, a gap G is formed between the connecting portion 5 of the second member 2 and the first member 1. Since the projection 6 is partially interposed in the gap G, even if the thickness of the first and second members 1 and 2 is set to be relatively small, the first and second members 1 and 2 The members 1 and 2 are not damaged by the atmospheric pressure acting on the member 2. Therefore, the brightness of the light emitting surface 1a of the first member 1 can be increased.

Further, since a gap G is formed between the connecting portion 5 of the second member 2 and the first member 1, the internal spaces are configured to communicate with each other. Therefore, by arranging the exhaust pipe 7 at an appropriate position communicating with the internal space, the exhaust of the internal space and sealing of the rare gas can be easily performed by one exhaust pipe 7, and the productivity can be improved. it can.

Further, the flat rare gas fluorescent lamp device P
When the LD is incorporated in the lighting device HA, the external electrodes 9 and 10 formed on the wall portion 4 of the second member 2 are adjacent to each other because the adjacent external electrodes are connected to have the same potential. Even if the interval between the external electrodes is reduced, it is possible to prevent the occurrence of discharge through the package 12 between them. Therefore, not only the insulation treatment between the external electrodes becomes easy, but also the lamp design can be given a margin.

In particular, the external electrodes 9 and 10 adjacent to each other are directly connected to each other, or the external electrodes 9 and 10 are connected to each other.
Is connected to a lead terminal led out through the package 12 from the end of the flat rare gas fluorescent lamp device PLD when the flat rare gas fluorescent lamp device PLD is incorporated in the lighting device HA. Electrical connection can be easily made.

FIG. 11 shows a flat rare gas fluorescent lamp device PLD according to a second embodiment of the present invention.
The basic configuration is the same as the embodiment shown in FIGS. The difference is that the outer surface of the second member 2 in the flat rare gas fluorescent lamp PL is covered with the package 12A. This package 12A has an opening at the top and has a box 12Aa sized to accommodate the flat rare gas fluorescent lamp PL, and a flat rare gas fluorescent lamp PL and a bottom formed at the bottom of the box 12Aa. A protruding spacer member 12Ab integrally formed such that a space is formed therebetween.
And a solid insulating member 12Ac between the box 12Aa and the flat rare gas fluorescent lamp PL.

In this embodiment, there are two methods for forming the package 12A. The first forming method is
The flat rare gas fluorescent lamp PL is housed in the box 12Aa such that the bottom surface of the wall surface portion 4 is placed on the protruding spacer member 12Ab, and then the box 12Aa and the flat rare gas fluorescent lamp PL are placed. And a liquid insulating member 12Ac is injected between them and cured.

In the second forming method, after a predetermined amount of a liquid insulating member 12Ac is injected into the box 12Aa, the box 12A
The flat rare gas fluorescent lamp PL is accommodated in a so that the bottom surface of the wall surface portion 4 is placed on the protruding spacer member 12Ab, and is cured. The amount of the insulating member 12Ac injected into the box 12Aa depends on the flat rare gas fluorescent lamp P.
When L is accommodated in the box 12Aa, the space between the outer surface of the flat rare gas fluorescent lamp PL and the box 12Aa is
It is desirable that Ac be fulfilled. Although a thermosetting resin is recommended as the insulating member 12Ac used in the first and second forming methods, a thermoplastic resin such as a hot melt can also be used.

According to this embodiment, since the package 12A side is constituted by the fixed box 12Aa, the external dimensions of the flat rare gas fluorescent lamp device PLD can be made constant. Therefore, application to embedded devices becomes easy.

FIG. 12 shows a third embodiment of the flat rare gas fluorescent lamp device PLD according to the present invention.
The basic configuration is the same as the embodiment shown in FIGS. The difference is that the outer surface of the second member 2 in the flat rare gas fluorescent lamp PL is covered with the package 12B. This package 12B has an opening at the top and has a box 12Ba of a size capable of accommodating the flat rare gas fluorescent lamp PL, and a second part of the flat rare gas fluorescent lamp PL at the bottom of the box 12Ba. A concave portion 12Bb integrally formed so as to substantially follow the outer surface of the member 2
And the protrusion 12Bc, and the adhesive layer 12Bd formed on the surface of the recess 12Bb and the protrusion 12Bc.

This flat rare gas fluorescent lamp device PLD
Accommodates a planar rare gas fluorescent lamp PL in a package 12B shown in FIG. 2B such that the second member 2 is on the side of the concave portion 12Bb and the convex portion 12Bc, and the outer surface of the second member 2 is substantially It is manufactured by bonding the whole and the concave portion 12Bb and the convex portion 12Bc with an adhesive layer 12Bd.
It is recommended that the adhesive layer 12Bd be cured by heating rather than naturally cured.

According to this embodiment, since the operation of injecting the insulating member 12Ac in the second embodiment can be omitted, the manufacturing operation is simplified as compared with the second embodiment, and the workability is further improved. be able to.

FIG. 13 shows a fourth embodiment of the flat rare gas fluorescent lamp device PLD according to the present invention.
The basic configuration is the same as the embodiment shown in FIGS. The difference is that in the sealing structure formed by the first and second members 1 and 2, almost the entire outer surface of the second member 2 (the wall portion 4).
And the reflection layer 13 is formed on the entire outer surface of the connecting portion 5). As the reflective layer 13, for example, a white paint including a light-reflective member such as an acrylic resin, a polycarbonate resin, titanium oxide, and magnesium oxide is applied, but other light-reflective members can also be applied.

After the external electrodes 9 and 10 are formed on the respective wall portions 4 of the second member 2, the reflective layer 13 is formed by, for example, applying a flat rare gas fluorescent lamp PL to a liquid white paint and applying the external electrodes 9 and 10. It is formed by immersing the entire outer surface of the second member 2 including 10 so as to be in contact with the second member 2, pulling it up, and then drying it.

The reflection layer 13 may be formed by applying an insulating sheet having a reflective and adhesive layer, spraying a white paint, electrostatically applying a white paint containing a resin, or applying a white paint. Can be formed by brushing.

According to this embodiment, in the wall portion 4,
Since the reflection layer 13 is formed on the portion where the external electrodes 9 and 10 are not formed (mainly, the bottom portion 4a of the wall portion 4), light leaking from the portion to the outside and becoming lossy light is reflected by the reflection layer 13 And is emitted from the light emitting surface 1a of the first member 1. Therefore, the brightness of the light emitting surface 1a can be increased as compared with the first to third embodiments.

The package 12A shown in FIG. 11 or the package 12B shown in FIG. 12 can be applied to the fourth embodiment.

FIGS. 14 to 16 show a fifth embodiment of a flat rare gas fluorescent lamp device PLD according to the present invention. The basic structure is almost the same as that of the embodiment shown in FIGS. Is the same. The difference is that in the second member 2, an opening 3a in which one end of the groove-shaped space portion 3 in the wall surface portion 4 is opened, and a substantially flat third opening is formed in the opening 3a. That is, the member 2A is hermetically sealed and closed. The exhaust pipe 7 (not shown) may be connected to a portion of the third member 2A corresponding to the opening 3a.

According to this embodiment, the second member 2 is inclined so that the opening 3a is directed downward, and the phosphor layer can be formed while the phosphor coating solution is flowing from above. The layer forming operation can be efficiently performed.

The package 12A shown in FIG. 11 or the package 12B shown in FIG. 12 can be applied to the fifth embodiment, and the reflection layer 13 of the embodiment shown in FIG. 13 can be applied. Can also.

FIGS. 17 and 18 show a flat rare gas fluorescent lamp device PLD according to a sixth embodiment of the present invention. The basic structure is almost the same as that of the embodiment shown in FIGS. Is the same. The difference is that a flange 2b that extends substantially horizontally is integrally formed around the entire periphery of the second member 2 and that the flange 2b and the periphery of the first member 1 are connected to each other by a sealing member 11. It was sealed so as to be airtight.

According to this embodiment, since the sealing area of the first and second members 1 and 2 is enlarged in a plane, the ratio of the light emitting surface 1a to the whole is smaller than that of each of the above embodiments. Although it is smaller than the above, the sealing workability and the sealing strength of both can be improved.

The package 12A shown in FIG. 11 or the package 12B shown in FIG. 12 can be applied to the sixth embodiment, and the reflection layer 13 of the embodiment shown in FIG. 13 can be applied. .

FIG. 19 shows a flat rare gas fluorescent lamp device PLD according to a seventh embodiment of the present invention.
The basic configuration is almost the same as the embodiment shown in FIGS. The difference is that in the second member 2, the length of the protruding portion 6 extending from the top of the connecting portion 5 is increased, and the first member 1
That is, the gap G formed between the connecting portion 5 and the connecting portion 5 is enlarged. In particular, by increasing the length of the protrusion 6,
The distance d between the first member 1 and the connecting portion 5 is larger than that of the embodiment shown in FIGS. 1 and 2, and the height h from the bottom surface 4 a of the wall portion 4 to the top of the connecting portion 5 is as shown in FIGS. It is configured to be lower than the embodiment shown in FIG.

According to this embodiment, since the gap G between the first member 1 and the top of the connecting portion 5 is configured to be large, the light emitting layer 8 in the groove-shaped space 3 adjacent to each other is formed. From the first through the respective gaps G
Is emitted from the light emitting surface 1a of the member 1. Therefore, the formation of a shadow on the light emitting surface 1a of the first member 1 corresponding to the gap G is reduced, and the luminance distribution can be equalized.

In particular, by increasing the gap G and reducing the depth of the groove-shaped space portion 3 (height from the bottom surface portion 4a of the wall surface portion 4 to the top of the connecting portion 5), the light G Since the portion is easily emitted from the light emitting surface 1a of the first member 1 through the gap G, the formation of a shadow on the light emitting surface 1a of the first member 1 corresponding to the gap G is further reduced. In addition, the luminance distribution can be further equalized.

Further, the first member 1
Although the distance between the connecting member 5 and the second member 2 becomes large, the protrusion 6 is interposed in the gap G between the two members.
Since the outer surface of the second member 2 is covered with the package 12, even if a small external force is applied to the second member 2, the second member 2 is combined with the reinforcing effect of the package 12 to form the second member 2.
Of the member 2 can be reduced.

Further, in the seventh embodiment, the package 12A shown in FIG. 11 or the package 1 shown in FIG.
2B can be applied, and the reflective layer 1 shown in FIG.
3 can also be applied. FIG. 1 shows the seventh embodiment.
The structure of the embodiment shown in FIGS. 4 to 16 or FIGS. 17 to 18 can be applied.

FIG. 20 shows an eighth embodiment of the flat rare gas fluorescent lamp device PLD according to the present invention.
The basic configuration is almost the same as the embodiment shown in FIGS. The difference is that the light emitting surface 1a of the first member 1
Is that a light emitting layer 8A made of a phosphor is formed on the inner surface. The thickness of the light emitting layer 8A is desirably formed to be smaller than the thickness of the light emitting layer 8 formed on the inner surface of the wall surface portion 4, for example. In particular, it is recommended that the light emitting layer 8A be formed of the same phosphor as the light emitting layer 8.

According to this embodiment, the light emitting layer 8A formed on the inner surface of the light emitting surface 1a emits light by the discharge between the external electrodes, and emits light together with the light from the light emitting layer 8 via the light emitting layer 8A. Is released to the outside. Therefore, the light emitting layer 8
Due to the light emission of A and the light diffusion effect of the light emitting layer 8A, the luminance distribution on the light emitting surface 1a is easily equalized. However,
As the thickness of the light emitting layer 8A increases, the absorption of light from the light emitting layer 8 increases. Therefore, the thickness of the light emitting layer 8A needs to be appropriately set in consideration of the application.

Further, the package 12A shown in FIG. 11 or the package 12B shown in FIG. 12 can be applied to the eighth embodiment, and the reflection layer 13 shown in FIG. 13 can be applied. Further, the structure of the embodiment shown in FIGS. 14 to 16 or FIGS. 17 to 18 can be applied to the eighth embodiment. Further, the light emitting layer 8A shown in the eighth embodiment can be applied to each of the above embodiments.

FIG. 21 shows a ninth embodiment of the flat rare gas fluorescent lamp device PLD according to the present invention.
The basic configuration is almost the same as the embodiment shown in FIGS. The difference is that the cross-sectional shape of the wall surface portion 4 of the second member 2 is formed in a substantially semicircular shape or a semicircular shape such as a substantially sinusoidal shape or an elliptical shape.

Each of the wall portions 4 having such a cross-sectional shape is integrally connected by a connecting portion 5 having a curved surface. A light emitting layer 8 is provided on the inner surface, and external electrodes 9 and 10 are provided on the outer surface. Is formed.

According to this embodiment, since the cross-sectional shape of the wall portion 4 is formed in a substantially semi-circular or irregular semi-circular shape, the phosphor (light emitting layer 8) is applied to the inner surface of the wall portion 4. The amount of adhesion can be increased. Therefore, the amount of light emitted from the light emitting surface 1a of the first member 1 can be increased.

Further, since the cross-sectional shape of the wall portion 4 is formed in a substantially semicircular shape or an irregular semicircular shape, the mechanical strength of the sealing structure formed by the first and second members 1 and 2 is reduced. Improvement can be made, and damage due to handling during the manufacturing process and after the product is completed can be reduced.

Further, the ninth embodiment differs from the package 12A shown in FIG.
B can be applied, and the reflection layer 13 shown in FIG.
Can also be applied. FIG. 14 shows the ninth embodiment.
16 or 17 to 18 or the structure of the light emitting layer 8A shown in FIG. 20 can be applied. Further, the structure of the wall portion 4 shown in the ninth embodiment can be applied to each of the above embodiments.

FIG. 22 shows a tenth embodiment of the flat rare gas fluorescent lamp device PLD according to the present invention. The basic structure is almost the same as that of the embodiment shown in FIGS. . The difference is that the wall portion 4 of the second member 2
Is formed in an arc shape or a dish shape with a shallow bottom having a small height h from the bottom surface portion 4a of the wall surface portion 4 to the top of the connecting portion 5.

According to this embodiment, since the whole thickness can be reduced, a flat rare gas fluorescent lamp device PLD which is thinner than each of the above embodiments can be realized. Therefore, for example, it is possible to easily achieve a reduction in thickness required for a liquid crystal display device or the like.

The tenth embodiment is different from the package 12A shown in FIG. 11 or the package 12B shown in FIG.
Can be applied, and the reflection layer 13 shown in FIG. 13 can also be applied. FIG. 14 shows the tenth embodiment.
16 or 17 to 18 or the structure of the light emitting layer 8A shown in FIG. 20 can be applied. Furthermore, the structure of the wall portion 4 shown in the tenth embodiment can be applied to each of the above embodiments.

FIG. 23 shows an eleventh embodiment of the flat rare gas fluorescent lamp device PLD according to the present invention. The basic structure is almost the same as that of the embodiment shown in FIGS. . The difference is that the wall portion 4 of the second member 2
Having a substantially triangular (V-shaped) cross-sectional shape;
That is, the external electrodes 9 and 10 which are adjacent to each other are directly connected at the connecting portion 5 so that the external electrodes 9 and 10 have the same potential.

According to this embodiment, when the flat rare gas fluorescent lamp device PLD is connected to the lighting device HA of the liquid crystal display device shown in FIGS. 9 and 10, the connection between the output side of the lighting device HA and the external electrode is made. The number of connection points is reduced, and connection workability can be improved.

The eleventh embodiment is different from the package 12A shown in FIG. 11 or the package 12B shown in FIG.
Can be applied, and the reflection layer 13 shown in FIG. 13 can also be applied. FIG. 14 shows the eleventh embodiment.
16 or 17 to 18 or the structure of the light emitting layer 8A shown in FIG. 20 can be applied. Furthermore, the structure of the wall portion 4 and / or the connection configuration of the adjacent external electrodes shown in the eleventh embodiment can be applied to the above-described embodiments.

FIG. 24 shows a twelfth embodiment of the flat rare gas fluorescent lamp device PLD according to the present invention. The basic structure is almost the same as that of the embodiment shown in FIGS. . The difference is that the recesses 14 and 14 are integrally formed on the outer surface of the wall portion 4 of the second member 2 and the external electrodes 9 and 10 are arranged in the recesses. In particular, by forming the recesses 14, 14 only on the wall portions forming the external electrodes 9, 10, the thickness d 1 of the bottom portions 14 a, 14 a is reduced to the wall portion 4 where the recesses 14, 14 are not formed.
Is set to be smaller than the wall thickness d2 of the bottom surface of the first embodiment.

The external electrodes 9 and 10 are formed in the respective recesses 14 and 14 by screen printing using, for example, a conductive paste. For example, a band-shaped metal member having an adhesive layer on the back surface is fitted and bonded. It can also be formed by deposition, vapor deposition, or application.

According to this embodiment, the thickness d1 of the bottom surfaces 14a, 14a of the concave portions 14, 14 in which the external electrodes 9, 10 are formed is made smaller than the thickness d2 of the other wall surfaces. The amount of light emitted from the first member 1 can be increased as compared with the above-described embodiments.

Since the second member 2 is required to have a certain mechanical strength, the overall thickness of the wall portion 4 is set to a thickness capable of maintaining the certain strength. Since the concave portions 14 are formed only in the portions where the external electrodes 9 and 10 that affect the discharge characteristics are formed, the second member 2
While maintaining a constant strength, the discharge characteristics (starting characteristics) and the amount of light can be improved.

In particular, if the external electrodes 9 and 10 are formed so as to be firmly adhered to the concave portions 14 and 14 of the wall portion 4, the concave portions and the external electrodes 9 and 10 are integrated, and the strength of the concave portions is reduced. In addition to being reinforced, damage due to handling after commercialization can be reduced in combination with the reinforcing effect of the covering of the package 12.

Further, the package 12A shown in FIG. 11 or the package 1 shown in FIG.
2B can be applied, and the reflective layer 1 shown in FIG.
3 can also be applied. Further, the structure shown in FIGS. 14 to 16 or 17 to 18 or the structure of the light emitting layer 8A shown in FIG. 20 can be applied to the twelfth embodiment. Furthermore, the formation structure of the external electrodes on the wall surface portion 4 shown in the twelfth embodiment can be applied to each of the above embodiments.

The present invention is not limited to the above-described embodiment. For example, the flat rare gas fluorescent lamp device is not limited to a backlight of a liquid crystal display device, but also a light source for display and a light source for general illumination. When a large flat light source is required, it can be manufactured by combining a plurality of flat rare gas fluorescent lamp devices into a desired size. The sealing of the first and second members (or the first, second, and third members) is performed prior to the evacuation operation, and the operation of enclosing and sealing the rare gas using a vacuum chamber is substantially performed. It can be done at the same time. Specifically, the first and second members were set in a vacuum chamber in a state where the sealing member was attached to the sealing surface, and after discharging the impurity gas, the pressure was controlled to a predetermined pressure in the vacuum chamber. With the rare gas introduced, the first and second members are further heated to hermetically seal. Further, the light emitting surface of the first member may be roughened, or a plurality of minute prisms may be integrally formed. Further, a protrusion or a gap interposed between the first member and the connecting portion of the second member may be omitted in some cases. Further, although the external electrode is formed in a substantially band shape, a deformed portion such as a sawtooth shape may be formed on a side edge portion thereof, or a deformed portion or a hole may be formed on a portion other than the side edge portion. . Furthermore, a circuit that generates a pulsed high-frequency voltage is recommended as a lighting device of the flat rare gas fluorescent lamp device, and a circuit configuration other than the illustrated example can be applied, or a sinusoidal high-frequency voltage can be generated. Circuits that do this are also available.

[0096]

As described above, according to the present invention, a plurality of groove-shaped spaces are formed in parallel at substantially constant intervals inside the sealing structure formed by the first and second members. To apply a high-frequency voltage to external electrodes formed on the outer surface of the wall,
By setting the lighting state, light with high luminance can be obtained from the light emitting surface of the first member, and the uniformity of luminance distribution can be increased. Therefore, for example, when applied to a liquid crystal display device, excellent image display becomes possible, and improvement in display quality can be expected.

The first member is formed by forming a translucent member in a substantially flat shape.
Since a plurality of groove-shaped spaces as discharge spaces are formed along the light emitting surface of the member, a flat light source capable of efficiently emitting light from the light emitting surface can be obtained.

A groove-shaped space is formed inside the plurality of wall portions of the second member, and a light emitting layer is formed on the inner surface. The light emitting layer can be effectively stimulated based on the discharge between the external electrodes, and can emit light efficiently. Therefore, the amount of light emitted from the first member can be increased.

Further, since the outer surface of the second member is covered with an insulating package so as to reinforce the mechanical strength of the second member, the thickness of the wall surface is reduced. Can be smaller. Therefore, high-luminance light can be obtained from the light emitting surface of the first member, and the starting characteristics can be improved. In addition, since the package has an insulating property, when applied to, for example, a liquid crystal display device, it is easy to insulate other components.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3A is a plan view of the first member shown in FIG. 1, and FIG.

4A is a plan view of the second member shown in FIG. 1, and FIG. 4B is a side sectional view thereof.

FIG. 5 is a side sectional view for explaining a method of forming the second member shown in FIG. 1;

FIG. 6 is a plan view showing a state in which a sealing member is attached to a second member before sealing.

FIG. 7 is a partially cutaway side view for explaining an exhaust method.

FIG. 8 is a partially cutaway side view for explaining a method of packaging the flat rare gas fluorescent lamp shown in FIG. 1;

FIG. 9 is a partially broken side view showing an application example of the present invention to a liquid crystal display device.

10 is an electric circuit diagram of the lighting device shown in FIG.

FIG. 11 is a partially cutaway side view showing a second embodiment of the present invention.

FIGS. 12A and 12B are views showing a third embodiment of the present invention, wherein FIG. 12A is a partially cutaway side view, and FIG. 12B is a side sectional view of the package shown in FIG.

FIG. 13 is a partially cutaway side view showing a fourth embodiment of the present invention.

FIG. 14 is a plan view showing a fifth embodiment of the present invention.

FIG. 15 is a sectional view taken along line YY of FIG. 14;

FIG. 16 is an exploded perspective view of FIG. 14;

FIG. 17 is a side sectional view showing a sixth embodiment of the present invention.

18 is a plan view of FIG.

FIG. 19 is an enlarged sectional view of a main part showing a seventh embodiment of the present invention.

FIG. 20 is an enlarged sectional view of a main part showing an eighth embodiment of the present invention.

FIG. 21 is an essential part enlarged sectional view showing a ninth embodiment of the present invention.

FIG. 22 is an enlarged sectional view of a main part showing a tenth embodiment of the present invention.

FIG. 23 is an enlarged sectional view of a main part showing an eleventh embodiment of the present invention.

FIG. 24 is an enlarged sectional view of a main part showing a twelfth embodiment of the present invention.

FIG. 25 is a sectional view of a rare gas discharge lamp according to a conventional example.

FIG. 26 is a schematic side view showing an application example of a rare gas discharge lamp to a liquid crystal display device.

FIG. 27 is a plan view of a flat rare gas fluorescent lamp which is a premise of the present invention.

FIG. 28 is a sectional view taken along the line ZZ of FIG. 27;

DESCRIPTION OF SYMBOLS 1 First member 1a Light emitting surface 2 Second member 2A Third member 2a Peripheral edge 2b Flange 3 Slot-shaped space 3a Opening 4 Wall 4a Bottom 5 Connecting 6 Projection Part 7 Exhaust pipe 8, 8A Light emitting layer 9, 10 External electrode 11 Sealing member 12, 12A, 12B Package 12Aa, 12Ba Box body 12Ab Spacer member 12Ac Insulating member 12Bb Concave portion 12Bc Convex portion 12Bd Adhesive layer 13 Reflective layer 14 Concave portion 14a Bottom surface Part PLD Planar rare gas fluorescent lamp device PL Planar rare gas fluorescent lamp G Gap FA, FB Molding jig P Plate member EX Exhaust head LCD Liquid crystal panel DB Light diffusion plate HA Lighting device

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Yoshizo Urata, Inventor NEC Electronics Co., Ltd. 1-4-24 Shiromi, Chuo-ku, Osaka City, Osaka Prefecture (72) Inventor Seiichiro Fujioka Castle, Chuo-ku, Osaka-shi, Osaka NEC Home Electronics Co., Ltd. F term (reference) 5C043 AA20 BB03 BB04 CC16 CD08 EA05 EA06

Claims (13)

[Claims] 1. A substantially flat first member having a light-transmitting property and a plurality of wall portions having a groove-shaped space portion are integrally formed in parallel via a connecting portion, and the first wall member has a groove-shaped space portion. A second member having a light emitting layer formed on an inner surface thereof; a rare gas sealed in an internal space formed by hermetically sealing respective peripheral portions of the first and second members with each other; External electrodes formed on the outer surface of each of the wall surfaces of the member and spaced apart from each other along the direction in which the groove-shaped space extends, and the outer surface of the wall is covered with an insulating package. A flat rare gas fluorescent lamp device according to claim 1. 2. A connecting part comprising: a first member having a substantially flat shape having a light-transmitting property; and a plurality of wall portions having a flange portion at a peripheral portion and a groove-shaped space portion inside an inner portion of the flange portion. And a second member having a light emitting layer formed on the inner surface of the wall surface, and a peripheral portion of the first member and a flange portion of the second member hermetically sealed from each other. Noble gas sealed in the internal space formed by sealing the second member and external electrodes formed on the outer surface of the respective wall surfaces of the second member so as to be separated from each other along the direction in which the groove-shaped space extends. Wherein the outer surface of the wall portion is covered with an insulating package. 3. A substantially flat first member having a light-transmitting property and a plurality of wall portions having a groove-shaped space portion having at least one open end are integrated in parallel via a connecting portion. And a second member having a light emitting layer formed on the inner surface of the wall, and an opening of the groove-shaped space is closed at one end of the wall in the second member. And a rare gas sealed in an internal space formed by hermetically sealing the respective peripheral portions of the first, second, and third members with each other. An external electrode formed on an outer surface of each wall surface of the second member so as to be spaced apart from each other along a direction in which the groove-shaped space extends, and the outer surface of the wall surface is provided with an insulating property. A flat rare gas fluorescent lamp device characterized by being coated with: 4. The flat rare gas fluorescent lamp device according to claim 1, wherein said first member is made of a glass plate or a ceramic plate having translucency. 5. The flat rare gas fluorescent lamp device according to claim 1, wherein said second member is made of a dielectric material. 6. The plane according to claim 1, wherein the second member is made of a glass member such as borosilicate glass, barium glass, lead glass, and soda glass. Noble gas fluorescent lamp device. 7. The flat rare gas fluorescent element according to claim 1, wherein the respective peripheral portions of the first and second members are hermetically sealed with low melting point glass. Lamp device. 8. The planar type according to claim 1, wherein said light emitting layer is formed of one kind of phosphor or a mixed phosphor obtained by mixing a plurality of kinds of phosphors. Noble gas fluorescent lamp device. 9. The method according to claim 1, wherein a rare gas mainly composed of xenon gas containing no mercury is sealed in the internal space defined by the first and second members. The flat rare gas fluorescent lamp device as described in the above. 10. The package is formed by molding using a thermoplastic resin or a thermosetting resin, whereby at least the second member is integrated with the thermoplastic resin or the thermosetting resin. Claim 1
4. The flat rare gas fluorescent lamp device according to any one of items 1 to 3. 11. The method according to claim 11, wherein the package is at least
A box having a size capable of accommodating the above member and having an opening above, and an insulating member injected into the box, and a wall portion of the second member housed in the box and a space of the box. The flat rare gas fluorescent lamp device according to any one of claims 1 to 3, wherein the second member, the box, and the insulating member are integrated by enriching the insulating member between them. 12. The package according to claim 12, wherein at least
A box having a size that can accommodate the above member and having an opening above, and an insulating member previously injected into the box, and housing the second member in the box to insulate the outer surface of the wall. The flat rare gas fluorescent lamp device according to any one of claims 1 to 3, wherein the second member, the box, and the insulating member are integrated by contacting the members. 13. The package according to claim 1, wherein at least a second
And an adhesive box formed on the inner surface of the box body, and the second member is housed in the box body. The flat rare gas fluorescence according to any one of claims 1 to 3, wherein the second member and the box are integrated by bonding an outer surface of the second member and an inner surface of the box with an adhesive layer. Lamp device.