JP2017117671A - Discharger package and discharger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharger package capable of maintaining a good central illuminance for a long period of time, and a discharger provided with the discharger package. SOLUTION: A white substrate 2 containing an aluminum oxide sintered body as a main component is provided on the upper surface of the substrate 2 so as to surround the substrate 2, and has a plurality of continuous steps on the inner surface, and is oxidized. The white frame 3 containing an aluminum sintered body as a main component, the cathode 4 provided so as to be in contact with the inner surface of the frame 3, and the cathode 4 and the center of the substrate 2 are aligned with each other in a top view. The anode 5 is provided so as to be in contact with the inner surface of the frame 3 with a gap from the cathode 4, and is provided inside the substrate 2 or on the lower surface of the substrate 2 and is sandwiched between the cathode 4 and the anode 5. The discharger package 1 is provided with a trigger electrode 6 provided so as to overlap the discharge region. [Selection diagram] FIG. 10

Description

  The present invention relates to a package for a discharger and a discharger including the same.

  In recent years, a camera function is provided in a mobile device such as a mobile phone, and it is required to capture a bright image at night and indoors. A light emitting device provided in a portable device needs to be downsized, and conventionally, a light emitting device using an LED (Light Emitting Diode) is provided. However, the amount of light in the LED is low, and the required amount of illumination light cannot be emitted. Therefore, a light emitting device using a glass tube that constitutes a discharger filled with a rare gas such as xenon that can instantaneously emit a large amount of light is provided. However, if the glass tube is simply downsized, the durability of the glass tube filled with the rare gas, particularly the durability against thermal stress, may be reduced. Therefore, considering the durability, there is a limit to miniaturization of the glass tube, and as a result, there is a limit to miniaturization of the discharger. Therefore, a light emitting device having a structure in which a rare gas such as xenon is filled in a discharge space of a container member made of ceramics and a discharge electrode is provided in the discharge space has been proposed (see Patent Document 1).

JP2015-114389A

  In the technique disclosed in Patent Document 1, the light emitting unit includes a reflective layer, a first electrode, and a second electrode. The surface of the reflective layer is covered with metal and plays the role of a trigger electrode. Therefore, the trigger electrode is exposed inside the light emitting unit. The reflective layer is formed in a stepped shape.

  However, in the above conventional technique, there is a possibility that the surface of the exposed trigger electrode is rusted or blackened and cannot be reflected well while being used as a flash light emitting device. .

  The objective of this invention is providing the discharger package provided with the package for dischargers which can maintain center illumination intensity favorable for a long term, and this package for dischargers.

  A package for a discharge device according to an embodiment of the present invention includes a white substrate mainly composed of an aluminum oxide sintered body, and a plurality of contiguous inner surfaces provided on the upper surface of the substrate so as to surround the substrate. A white frame mainly composed of an aluminum oxide sintered body, a cathode provided in contact with the inner surface of the frame, and the center of the cathode and the substrate in a top view And an anode provided so as to be in contact with the inner surface of the frame with a space between the cathode and the cathode, and the cathode and And a trigger electrode provided so as to overlap a discharge region sandwiched between the anodes.

  A discharger according to one aspect of the present invention includes the above-described discharger package, a rare gas sealed in the discharger package, and a lid made of glass bonded to an upper end of the frame. It is characterized by.

  The package for a discharger according to an embodiment of the present invention has a trigger electrode provided on the inside or the bottom surface of the substrate, the surface of the package for the discharger is white, and has a plurality of steps that are continuous on the inner surface of the frame. Thus, the central illuminance can be maintained satisfactorily in the long term.

  According to the discharger of one embodiment of the present invention, since the discharger package having the above configuration is included, the central illuminance can be favorably maintained for a long time.

It is the perspective view which showed the package for dischargers which concerns on one Embodiment of this invention. It is the top view which showed the package for electric dischargers which concerns on one Embodiment of this invention. It is sectional drawing in the AA line of the package for dischargers shown in FIG. 1 and FIG. It is sectional drawing in the BB line of the package for electric dischargers shown in FIG. 1 and FIG. It is the time of the cross section in the CC line of the package for electric dischargers shown in FIG. It is the bottom view which showed the package for dischargers which concerns on one Embodiment of this invention. 1 is an exploded perspective view illustrating a package for a discharger according to an embodiment of the present invention. It is the perspective view which showed the package for dischargers and lid which concern on one Embodiment of invention. It is the perspective view which showed the discharger which concerns on one Embodiment of this invention. It is the perspective view which showed the discharger which concerns on one Embodiment of this invention. It is sectional drawing in the DD line of the discharger shown in FIG. It is the perspective view which showed the lens mounted in the upper surface of the discharger which concerns on one Embodiment of this invention, and a discharger. It is an imaging device carrying the discharger concerning one embodiment of the present invention.

  A discharger is built in imaging devices, such as portable terminals, such as a smart phone, and a digital camera, for example. The discharger can emit a flash of a large amount of light instantaneously as compared with an LED, for example, using a discharge action of a rare gas such as xenon. The circuit configuration for causing the discharger to emit light is the same as that of a flash light emitter using a xenon discharge tube having a structure in which a glass tube is filled with a rare gas such as xenon. Hereinafter, a package for a discharger and a discharger according to embodiments of the present invention will be described with reference to the drawings.

<Configuration of discharger package>
1 is a perspective view of a discharger package 1 according to an embodiment of the present invention, FIG. 2 is a top view of the discharger package 1 according to an embodiment of the present invention, and FIGS. FIG. 6 shows a cross-sectional view of the discharger package 1 according to one embodiment, and FIG. 6 shows a bottom view of the discharger package 1 according to one embodiment of the present invention. In these drawings, the discharger package 1 includes a substrate 2 and a frame 3.

As shown in FIG. 1, the substrate 2 has, for example, a rectangular shape when viewed from above. It may be circular or elliptical. The size of the substrate 2 is 5 mm to 20 mm in the long side and 2 mm to 10 mm in the short side in the top view, and the thickness of the substrate 2 is 0.1 mm to 1 mm. The substrate 2 is made of an aluminum oxide sintered body. The main component is an aluminum oxide sintered body. For example, white oxides such as zirconium oxide, silicon dioxide, magnesium oxide and calcium oxide may be included as subcomponents. In this case, the main component refers to a component having a spectrum peak size of 90% or more on the basis of the case where the spectrum peak size is 100% using fluorescent X-ray analysis or the like. The minor component is less than 10%. In addition, it can be identified by the position and size of the peak of the spectrum how much the sub-component substance is contained. If the substrate 2 is white, the generated light can be effectively reflected and emitted to the outside. White means a color perceived by humans when all colors of visible light (380 to 780 nm) are irregularly reflected.

  The substrate 2 is white as described above, and the metal such as the trigger electrode is not exposed on the upper surface of the substrate 2 when the discharger package 1 is viewed from above. That is, the trigger electrode is not provided on the upper surface of the substrate 2, and the trigger electrode is not exposed on the upper surface of the substrate 2. The trigger electrode is provided inside the substrate 2 or on the lower surface of the substrate 2. For this reason, the white surface of the aluminum oxide sintered body is exposed on the bottom surface of the discharger package 1. Since the bottom surface of the discharger package 1 is white, light generated by the discharge can be reflected also from the bottom surface, so that a light emission amount can be ensured.

  A frame 3 is provided on the upper surface of the substrate 2 so as to surround the substrate 2. The outer edge and inner edge of the frame 3 are, for example, rectangular in a top view. A circular shape or an elliptical shape may be used according to the shape of the substrate 2. The size of the outer edge in the top view of the frame 3 is 5 mm to 20 mm for the long side and 2 mm to 10 mm for the short side, and the size of the inner edge in the top view of the frame 3 is 4 mm to 18 mm for the long side. The side is 1 mm to 8 mm. The height of the frame 3 is 0.1 mm to 1 mm. The frame 3 is made of an aluminum oxide sintered body. If the frame 3 is white, the generated light can be effectively reflected and emitted to the outside. Further, the frame body 3 has an aluminum oxide sintered body as a main component, like the substrate 2. For example, white oxides such as zirconium oxide, silicon dioxide, magnesium oxide and calcium oxide may be included as subcomponents.

  As shown in FIG. 1 and FIG. 2, the frame 3 has a plurality of steps 11 continuous on the inner surface. The plurality of stages 11 can control the spread of light when a rare gas or the like sealed in the region surrounded by the frame 3 emits light by discharge. This is because the light can be condensed near the center of the discharger package 1 by directing the light reflecting direction in the plurality of stages 11 in the direction surrounded by the frame 3. The width of the plurality of steps 11 is 0.1 mm to 4 mm, and the height is 0.1 mm to 0.5 mm. Since the trigger electrode is not provided on the surface of the plurality of steps 11 similarly to the substrate 2, the white color of the aluminum oxide sintered body is exposed to the discharger package 1. For this reason, the light generated by the discharge can be reflected and emitted from the surface of the step 11.

  The width and height of each of the plurality of steps 11 may be different or the same. When the widths and heights of the plurality of steps 11 are different, the light absorption rate and the reflectance of the aluminum oxide sintered body also differ depending on each step 11. In the present embodiment, the width of each step 11 decreases from the upper surface of the substrate 2 toward the upper end of the frame body 3 in a top view. Thus, the larger the substrate 2 is, the larger the opening is. When the opening is wider, when light generated by the discharge is reflected, the light is easily reflected toward the inside of the discharger package 1. For this reason, the light can be condensed near the center of the discharger package 1.

  As shown in FIGS. 2 and 3, the cathode 4 is provided so as to be in contact with the inner surface of the frame 3. An anode 5 is provided so as to be in line with the center of the cathode 4 and the substrate 2 in a top view. That is, the cathode 4 and the anode 5 are provided to face the inner surface of the frame 3. The anode 5 is provided so as to be in contact with the inner surface of the frame 3 in the same manner as the cathode 4 with a space between the anode 5 and the cathode 4. The cathode 4 and the anode 5 are electrodes that are composed of a plurality of metal particle groups, and are used for causing a dielectric breakdown in a rare gas due to a potential difference, and for passing a current through the rare gas.

The cathode 4 and the anode 5 are made of, for example, a refractory metal such as tungsten (W) and molybdenum (Mo), nickel (Ni), cobalt (Co), iron (Fe), iron chromium nickel alloy (Fe—Cr—Ni). ) And other metals. The size of the cathode 4 and the anode 5 in a top view is such that the long side is 0.5 mm to 2.5 mm, the short side is 0.5 mm to 2.5 mm, and the thickness is 10 μm to 300 μm.

  The cathode 4 has a shape such that the tip becomes narrower toward the anode 5 in a top view. Not only rectangular shape but circular shape and polygonal shape may be sufficient. Since the tip of the cathode 4 is thin, electrons are likely to be emitted from the pointed portion, and thus electrons are likely to be emitted. Moreover, when the corner | angular part of the front-end | tip is rounded, it can suppress that the cathode 4 deteriorates by discharge | release of an electron. Similarly to the cathode 4, the anode 5 has a shape such that the tip becomes narrower toward the cathode 4 in a top view.

  As shown in FIG. 3, the cathode 4 and the anode 5 are electrically connected to the outside through the via conductor 13. In particular, a via conductor 13 is formed at the tip of the cathode 4 and the anode 5 such that a normal cylindrical via is divided in half. The via conductor 13 divided in half can dissipate high heat generated at the tips of the cathode 4 and the anode 5 during heat dissipation. Further, the size can be reduced by making the size of a half of a normal via. A plurality of vias divided in half may be provided at the tip.

  A plurality of via conductors for connecting the cathode 4 and the anode 5 to the external terminal and the like are preferably provided separately from the vias divided in half so that a strong current flows through the cathode 4 and the anode 5 at once. In order to allow a strong current to flow, the plurality of via conductors 13 are provided in the thickness direction of the substrate 2 at positions overlapping the cathode 4 and the anode 5. At this time, the plurality of via conductors 13 are preferably provided so as to be uniform over a wide area. If they are uniformly arranged, the current conducted to the cathode 4 and the anode 5 tends to be uniform, and even if heat is generated during discharge, it can be easily radiated.

  As shown in FIGS. 3 and 4, the trigger electrode 6 is formed in a rectangular plate shape, and is provided inside the substrate 2 or on the lower surface of the substrate 2 so as to be electrically insulated from the cathode 4 and the anode 5. Yes. As a result, at least a part of the substrate 2 exists between the trigger electrode 6 and the discharge region. That is, the trigger electrode 6 is not exposed to the discharge region. Since the trigger electrode is not exposed on the surface of the discharge area, the trigger electrode is not rusted and there is no possibility of deposits on the surface. The trigger electrode 6 preliminarily discharges between the cathode 4 and the cathode 4 and the anode 5 in response to a signal from an external trigger circuit, and starts a stable main discharge between the cathode 4 and the anode 5. For this reason, stable discharge can be performed by the possibility that the trigger electrode rusts and there is no risk of deposits on the surface.

  The trigger electrode 6 is made of a refractory metal such as W and Mo. In addition, the trigger electrode 6 has a size of 3 mm to 16 mm in the long side, 1 mm to 8 mm in the short side, and 1 μm to 10 μm in thickness.

  As shown in FIGS. 3 and 5, when the inner edge of the frame 3 is rectangular in top view, a pair of convex portions 12 are provided to face each of the short sides. On the upper surface of the convex portion 12, a cathode 4 and an anode 5 are provided. Since the cathode 4 and the anode 5 are provided on the upper surface of the convex portion 12, the discharge region can be widened in the vertical direction. In particular, when the cathode 4 and the anode 5 are provided up to the side surface of the convex portion 12, electrons are easily emitted.

  The pair of convex portions 12 are provided so as to be sandwiched between a pair of continuous plural steps 11. When the plurality of steps 11 sandwich the pair of convex portions 12, the steps 11 can be provided in the direction in which the light spreads when discharging and emitting light. For this reason, the spread of light can be controlled by the stage 11. In particular, when the width of the step 11 is narrowed from the upper surface of the substrate 2 toward the upper end of the frame body 3, the light is easily reflected toward the inside of the discharger package 1. For this reason, the light can be condensed near the center of the discharger package 1.

  Further, the inner edge of the frame 3 is rectangular when viewed from above, and when the cathode 4 and the anode 5 are provided on each of the short sides of the frame, the plurality of steps 11 are provided in each of the long sides. It is good to be. By providing the plurality of steps 11 in the long side direction, the light emitted in the discharge region sandwiched between the cathode 4 and the anode 5 is easily reflected inward. For this reason, it can condense in the center direction. In particular, when the cathode 4 and the anode 5 are provided on the short side, the generated light tends to spread in the long side direction. For this reason, by providing the step 11 in the long side direction, the light that spreads in the long side direction can be reflected inward. Further, by providing the step 11, a part in the long side direction can be increased, so that the rigidity of the discharger package 1 can be increased.

  In addition, the discharge region can be widened as compared with the case where a plurality of steps 11 continuous in the short side direction are provided. In addition, since the areas of the tips of the cathode 4 and the anode 5 exposed in the discharger package 1 can be increased, discharge can be generated in a wide range in the space, and the amount of light emission can be ensured. In particular, since the discharge mainly occurs in the discharge region of the cathode 4 and the anode 5, even if the plurality of steps 11 continuous in the short side direction are not provided, the discharge is generated if provided in the long side direction. Light can be condensed near the center of the discharger package 1.

  Further, as shown in FIG. 6, the discharger package 1 of the present embodiment is provided with external terminals corresponding to the cathode 4, the anode 5, and the trigger electrode 6 on the lower surface of the substrate 2. Each electrode is electrically connected to the external terminal by a via conductor 13 or the like.

  According to the discharger package 1 of the embodiment of the present invention having the above-described configuration, the trigger electrode 6 is provided on the inside or the lower surface of the substrate 2, having a plurality of steps 11 continuous on the inner surface of the frame 3. Therefore, there is no fear that the trigger electrode rusts or adheres to the surface. For this reason, it is possible to maintain the central illuminance satisfactorily over the long term.

<Manufacturing Method for Discharger Package>
Next, a manufacturing method of the discharger package 1 according to the embodiment of the present invention will be described with reference to FIG. FIG. 7 is an exploded perspective view showing a laminated body for manufacturing the discharger package 1. The manufacturing method of the discharger package 1 includes a molding process, a printing process, and a baking process. If an encapsulation process is added to this, the discharger 10 can be manufactured.

  As shown in FIG. 7, the discharger package 1 includes a rectangular plate-shaped first ceramic green sheet, a rectangular plate-shaped second ceramic green sheet, a rectangular plate-shaped third ceramic green sheet, It is manufactured using a laminate in which a plate-like fourth ceramic green sheet, a rectangular plate-like fifth ceramic green sheet, and a rectangular plate-like sixth ceramic green sheet are laminated.

In the forming step, the first ceramic green sheet, the second ceramic green sheet, the third ceramic green sheet, the fourth ceramic green sheet, the fifth ceramic green sheet, and the sixth ceramic green sheet before processing, Mold into a predetermined shape. For example, the first ceramic green sheet is formed such that a through-hole penetrating in the thickness direction corresponding to the uppermost opening of the frame 3 is formed. The second ceramic green sheet is formed such that a step 11 in the long side direction of the frame 3 is formed and a through-hole penetrating in the thickness direction corresponding to the opening is formed. The third ceramic green sheet is formed such that the convex portion 12 in the short side direction of the frame 3 is formed and a through hole penetrating in the thickness direction corresponding to the opening is formed. As for the 4th ceramic green sheet, the convex part 12 of the short side direction of the frame 3, and the step 11 of the long side direction are formed, and the through-hole penetrated in the thickness direction corresponding to the opening is formed. Molded. The fifth ceramic green sheet is molded so as to form a sealing port for sealing gas. The sixth ceramic green sheet has a rectangular plate shape.

  Here, the ceramic green sheet before processing is formed by a normal forming method used by those skilled in the art. For example, aluminum oxide, titania-based oxide, zirconate-based oxide, and the like are used as the main component of the raw material of the ceramic green sheet before processing. When using a sintered body mainly composed of barium titanate, for example, a predetermined amount of magnesium oxide powder, rare earth oxide powder and manganese oxide powder are blended with barium titanate powder, If necessary, glass powder is added as a sintering aid to obtain raw powder. Next, an organic vehicle is added to the raw material powder to prepare a ceramic slurry, and then a ceramic green sheet before processing is formed using a conventionally known sheet forming method such as a doctor blade method or a die coder method.

  In the printing process, which is a subsequent process of the forming process, the cathode 4 and the anode 5 are printed in the short side direction on the upper surface of the third ceramic green sheet. Also, the cathode 4 and the anode 5 are printed in the short side direction on the fourth ceramic green sheet, the fifth ceramic green sheet, and the sixth ceramic green sheet. Further, the trigger electrode 6 is printed on the upper surface of the sixth ceramic green sheet. In FIG. 7, the trigger electrode 6 is printed on the upper surface of the sixth ceramic green sheet, but the trigger electrode is formed on the surface (lower surface) of the fifth ceramic green sheet facing the sixth ceramic green sheet. 6 may be printed. The trigger electrode 6 may be printed on the lower surface of the sixth ceramic green sheet.

  Also, external terminals are printed on the lower surface of the sixth ceramic green sheet. In addition, via conductors 13 are printed at the positions of the cathode 4 and the anode 5 of the third ceramic green sheet, the fourth ceramic green sheet, the fifth ceramic green sheet, and the sixth ceramic green sheet.

  In the printing process, the cathode 4, the anode 5, the trigger electrode 6, the external terminal and the via conductor 13 are obtained by adding and mixing a predetermined organic binder and solvent to metal particles such as W and metal particles such as Ni which are high melting point metals. The metal paste obtained in this way is formed by printing using a conventionally known screen printing method.

  In the firing process, which is a subsequent process of the printing process, the first ceramic green sheet, the second ceramic green sheet, the third ceramic green sheet, the fourth ceramic green sheet, the fifth ceramic green sheet, and the sixth ceramic The green sheets are laminated so that the cathode 4 and the anode 5 overlap. Further, the laminated body is laminated so that a plurality of continuous steps 11 are formed in the long side direction, and the trigger electrode 6 is sandwiched between the fifth ceramic green sheet and the sixth ceramic green sheet. Form. Next, the laminated body is fired.

  Firing of the laminate in the firing step is performed at a temperature rising rate of 5 ° C./h to 300 ° C./h, degreasing in a temperature range up to 500 ° C., and then a temperature rising rate of 25 ° C./h to 1000 ° C./h. And firing in a reducing atmosphere of a mixed gas of hydrogen and nitrogen for 0.5 to 4 hours in a temperature range of 1400 ° C to 1600 ° C. By firing such a laminated body, the substrate 2 and the frame 3 made of ceramics are formed.

Next, in the sealing step, the upper end of the frame 3 of the discharger package 1 is brought into close contact with the lid 7 in a rare gas atmosphere mainly composed of xenon (Xe), for example, and the discharger package 1 and the lid 7 A rare gas is sealed in a sealed space surrounded by For the close contact between the upper end of the frame body 3 and the lid body 7, glass having a melting point lower than that of the glass used for the lid body 7 is used.

  The discharger package 1 and the discharger 10 according to an embodiment of the present invention can be manufactured through the molding step, the printing step, the firing step, and the sealing step.

<Configuration of discharger>
8 is a perspective view of the discharger package 1 and the lid body 7 according to an embodiment of the present invention, FIG. 9 is a perspective view of the discharger 10 according to the embodiment of the present invention, and FIG. FIG. 11 shows a modification of the discharger 10 according to the embodiment of the present invention, and FIG. 11 shows a cross-sectional view taken along the line DD showing the discharger according to the embodiment. In these drawings, a discharger 10 includes a discharger package 1, a lid 7, and a rare gas to be sealed according to an embodiment of the present invention. Further, as shown in FIG. 11, the modification further includes a lens 8.

  As shown in FIGS. 8 to 10, the discharger 10 includes a discharger package 1 according to the present embodiment, a lid 7 joined to the upper end of the frame 3 in the discharger package 1, and the discharger package 1. And a rare gas filled in a space surrounded by the lid body 7. The rare gas is, for example, a gas mainly containing xenon (Xe). Since xenon gas has a continuous spectrum with a wavelength of light close to that of sunlight, it can emit light that is easily visible to humans.

  The lid 7 is a light-transmitting flat plate-like member, joined to the upper end of the frame 3 in the discharger package 1, and closes the space surrounded by the discharger package 1. Here, the translucency of the lid 7 means that light having a wavelength of at least a part of light emitted by discharge can be transmitted. The lid 7 is made of an insulating material such as glass, sapphire, or translucent ceramic. The lid body 7 has the same size as the outer edge of the frame body 3 in a top view, and has a thickness of 0.3 mm to 1 mm.

  When the lid 7 is made of glass, the lid 7 is joined to the upper end of the frame 3 in the discharger package 1 by glass joining. When the lid body 7 is made of sapphire or translucent ceramics, the lid body 7 is joined to the upper end of the frame body 3 in the discharger package 1 by glass joining or sintering joining. Sintering is a glassy material contained in the frame 3 by subjecting the upper end of the frame 3 and the lid 7 to a high temperature treatment in a state where the surfaces to be bonded are brought into contact with each other using a bonding jig. Is made to function as a bonding material.

  Moreover, as shown in FIG. 11, the lens 8 may be provided on the upper surface of the lid 7, and the lens 8 is a Fresnel lens. With a Fresnel lens, the spread of light can be controlled while reducing the height. A Fresnel lens is a lens in which the lens surface has concentric irregularities. The size of the lens 8 in a top view is such that the long side is 5 mm to 20 mm, the short side is 2 mm to 10 mm, and the thickness is 0.5 mm to 1 mm. The lens 8 is made of a translucent material such as glass or plastic.

  As illustrated in FIG. 12, the discharger 10 is built in a portable terminal such as a smartphone or an imaging apparatus 100 such as a digital camera. The discharger 10 is built in the imaging apparatus 100 and can emit light necessary for taking a picture.

  According to the discharger 10 of the embodiment of the present invention having the above-described configuration, the central illuminance can be satisfactorily maintained for a long time by including the discharger package 1.

  Further, by mounting the Fresnel lens, in addition to the condensing effect in a plurality of consecutive stages 11, a further condensing effect can be obtained, and the central illuminance can be favorably maintained for a longer period. .

  The present invention is not limited to the above-described embodiment, and various modifications and changes can be made without departing from the scope of the present invention. Further, all modifications and changes belonging to the scope of the claims are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Discharger package 2 Substrate 3 Frame 4 Cathode 5 Anode 6 Trigger electrode 7 Lid 8 Lens 10 Discharger 11 Stage 12 Protrusion 13 Via conductor 100 Imaging device

Claims (7)

A white substrate mainly composed of an aluminum oxide sintered body;
On the upper surface of the substrate, the white frame body is provided so as to surround the substrate, and has a plurality of steps that are continuous on the inner surface.
A cathode provided in contact with the inner surface of the frame;
In a top view, the cathode and the anode are provided so as to be in a straight line with the center of the substrate, and the anode is provided so as to be in contact with the inner surface of the frame with a gap between the cathode,
A discharger package comprising: a trigger electrode provided inside the substrate or on a lower surface of the substrate and provided to overlap a discharge region sandwiched between the cathode and the anode.   The package for a discharger according to claim 1, wherein the substrate and the frame body include a white oxide as a subcomponent.   The inner edge of the frame body is rectangular in a top view, and the plurality of steps are provided to face each other in the long side direction of the frame body and to each of the short sides of the frame body 3. A package for a discharger according to claim 1, wherein a pair of convex portions are provided opposite to each other, and the anode and the cathode are provided on an upper surface of the convex portion.   The width of each step of the plurality of steps from the upper surface of the substrate to the upper end of the frame body as viewed from above is reduced toward the upper end of the frame body. The discharger package according to any one of 3 above. The discharger package according to any one of claims 1 to 4,
A rare gas sealed in the discharger package;
A discharger comprising: a lid made of glass joined to an upper end of the frame. A discharger according to claim 5;
A discharger comprising: a lens mounted on an upper surface of the lid of the discharger.   The discharger according to claim 6, wherein the lens is a Fresnel lens.

Images