WO2011040068A1 - Dispositif électroluminescent et tube électroluminescent - Google Patents

Dispositif électroluminescent et tube électroluminescent Download PDF

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Publication number
WO2011040068A1
WO2011040068A1 PCT/JP2010/055835 JP2010055835W WO2011040068A1 WO 2011040068 A1 WO2011040068 A1 WO 2011040068A1 JP 2010055835 W JP2010055835 W JP 2010055835W WO 2011040068 A1 WO2011040068 A1 WO 2011040068A1
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WO
WIPO (PCT)
Prior art keywords
emitting device
discharge space
light emitting
electrode pattern
light
Prior art date
Application number
PCT/JP2010/055835
Other languages
English (en)
Japanese (ja)
Inventor
清茂 宮脇
義明 植田
学 宮石
宏樹 伊藤
Original Assignee
京セラ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京セラ株式会社 filed Critical 京セラ株式会社
Publication of WO2011040068A1 publication Critical patent/WO2011040068A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
    • H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers

Definitions

  • the present invention relates to a light emitting device such as a discharge lamp.
  • a light emitting device such as a discharge lamp has a structure in which an inert gas is filled in a glass tube.
  • each of the pair of electrodes is fixed to the glass tube so as to protrude from the end of the glass tube into the discharge space.
  • light emitting devices such as discharge lamps have been required to be improved in light emission intensity or light emission amount while being downsized.
  • the conventional light emitting device has a difficult structure with respect to improving the light emission intensity or the light emission amount while reducing the size.
  • a light-emitting device includes a container member having a discharge space, an inert gas sealed in the discharge space, a position below the discharge space, and a container member.
  • a first electrode pattern provided and a second electrode pattern facing the first electrode pattern through the discharge space are included.
  • the container member includes a translucent member that closes the discharge space.
  • the second electrode pattern is provided on the translucent member.
  • the arc tube has a container member having a discharge space filled with an inert gas, and a first member provided below the discharge space and provided in the container member. And a second electrode pattern facing the first electrode pattern with a discharge space interposed therebetween.
  • the container member includes a translucent member that closes the discharge space. The second electrode pattern is provided on the translucent member.
  • FIG. 1 shows a perspective view of a light emitting device according to a first embodiment of the present invention.
  • FIG. 2 shows a longitudinal sectional view of the light emitting device shown in FIG. 1.
  • FIG. 3 is an exploded perspective view showing a base body 11 and a first electrode pattern 2 shown in FIG. 2.
  • FIG. 4 is a longitudinal sectional view showing another example of the light emitting device shown in FIG. 2.
  • the top view of the light-emitting device shown by FIG. 1 is shown.
  • the longitudinal cross-sectional view of the light-emitting device in the 2nd Embodiment of this invention is shown.
  • the longitudinal cross-sectional view of the light-emitting device in the 3rd Embodiment of this invention is shown.
  • the longitudinal cross-sectional view of the light-emitting device in the 4th Embodiment of this invention is shown. 9 shows another example of the first electrode pattern 2 and the second electrode pattern 3 in the light emitting device shown in FIG.
  • the top view of the light-emitting device in the 5th Embodiment of this invention is shown.
  • 11 shows another example of the light emitting device shown in FIG.
  • the light emitting device includes a container member 1, a first electrode pattern 2, a second electrode pattern 3, and an inert gas. 4 is included.
  • the light emitting device is mounted on the xy plane of a virtual xyz space.
  • the upward direction means the positive direction of the virtual z axis.
  • the light emitting direction of the light emitting device is the positive direction of the virtual z axis.
  • the light emitting device is a discharge lamp using light emission by discharge in the inert gas 4.
  • the container member 1, the first electrode pattern 2, and the second electrode pattern 3 constitute an arc tube.
  • the container member 1 includes a base body 11 and a translucent member 12 bonded to the base body 11.
  • the container member 1 has a discharge space 13 defined by the base 11 and the translucent member 12.
  • the substrate 11 is substantially made of an insulating material.
  • An example of the insulating material is ceramics.
  • the base 11 has a substantially rectangular shape in plan view.
  • the plan view is a line of sight in the negative direction of the virtual z-axis from above in FIG.
  • the exemplary substrate 11 has a substantially rectangular shape.
  • Another exemplary substrate 11 has sidewalls that become progressively thinner as it goes upward.
  • Another exemplary substrate 11 has sidewalls that become progressively thicker in the downward direction.
  • the upward direction refers to the positive direction of the virtual z axis
  • the downward direction refers to the negative direction of the virtual z axis.
  • the substrate 11 includes a first insulating layer 111 to a fourth insulating layer 114.
  • the second insulating layer 112 to the fourth insulating layer 114 are stacked on the first insulating layer 111.
  • the fourth insulating layer 114 has a frame shape surrounding the discharge space 13.
  • the translucent member 12 is bonded to the upper surface of the base 11 and closes the discharge space 13.
  • “translucency” of the member 12 means that at least part of the wavelength of light emitted by light emission in the discharge space 13 can be transmitted.
  • the translucent member 12 is substantially made of an insulating material.
  • An example of the insulating material is glass.
  • Other examples of insulating materials are translucent ceramics or sapphire.
  • the translucent member 12 is made of translucent ceramics or sapphire
  • the translucent member 12 is fixed to the base 11 by bonding or sintering bonding with an inorganic insulating material typified by glass.
  • sinter bonding is included in the base body 11 by subjecting the base body 11 and the translucent member 12 to high-temperature treatment in a state where the surfaces to be joined are brought into contact with each other using a joining jig. It means that glassy material is bonded as a bonding material.
  • the discharge space 13 has a substantially rectangular shape in a plan view and has a rectangular shape in a longitudinal section.
  • the discharge space 13 is defined by the recess of the base 11.
  • the first electrode pattern 2 is provided below the discharge space 13 and is embedded in the substrate 11.
  • the first electrode pattern 2 is an anode.
  • the first electrode pattern 2 has a structure that easily causes electric field concentration. “Electric field concentration” means that the electric field concentrates due to the edge effect generated at the end of the first electrode pattern 2. More specifically, as shown in FIG. 3, the first electrode pattern 2 desirably includes a planar portion 21 and a plurality of protruding portions 22 provided on the planar portion 21. . Electric field concentration occurs in the plurality of protruding portions 22 of the first electrode pattern 2.
  • the planar portion 21 is formed on the upper surface of the first insulating layer 111.
  • the plurality of protruding portions 22 are formed inside the second insulating layer 112 and are electrically connected to the planar portion 21.
  • the first electrode pattern 2 includes a refractory metal such as tungsten (W), molybdenum (Mo), and manganese (Mn) as a component.
  • the second electrode pattern 3 faces the first electrode pattern 2 through the discharge space 13.
  • the second electrode pattern 3 is a cathode.
  • the exemplary second electrode pattern 3 is provided inside the translucent member 12.
  • Another exemplary second electrode pattern 3 is provided on the outer surface of the translucent member 12, as shown in FIG.
  • the second electrode pattern 3 is substantially made of a translucent material.
  • “translucency” in the material of the second electrode pattern 3 means that at least a part of the wavelength of light emitted by light emission in the discharge space 13 can be transmitted.
  • the second electrode pattern 3 is substantially made of indium tin oxide (ITO), for example.
  • the formation region of the second electrode pattern 3 is preferably larger than the region of the discharge space 13 in plan view. With such a configuration, the light emitting device can efficiently use the discharge space 13.
  • the inert gas 4 is mainly composed of xenon (Xe), for example, and is enclosed in the discharge space 13.
  • the gas pressure of the inert gas 4 is preferably higher than atmospheric pressure for the purpose of improving luminous efficiency.
  • the light emitting device of the present embodiment includes the first electrode pattern 2 embedded in the container member 1 and the second electrode pattern 3 provided on the inner or outer surface of the translucent member 12.
  • the light emission intensity or the light emission amount can be improved while downsizing. Therefore, the light emitting device of this embodiment can be mounted on, for example, a portable electronic device.
  • the use resistance is improved because the substrate 11 is substantially made of ceramics. Therefore, the light emitting device of the present embodiment can improve the light emission intensity or the light emission amount while reducing the size.
  • the first electrode pattern 2 is an anode, so that the light emitting device is improved with respect to use resistance. Therefore, the light emitting device of the present embodiment can improve the light emission intensity or the light emission amount while reducing the size.
  • the translucent member 12 is substantially made of sapphire, so that the usage resistance is improved. Therefore, the light emitting device of the present embodiment can improve the light emission intensity or the light emission amount while reducing the size.
  • the light emitting device of the present embodiment is improved with respect to the use durability by bonding the translucent member 12 to the base body 11 by sintering bonding. Therefore, the light emitting device of the present embodiment can improve the light emission intensity or the light emission amount while reducing the size.
  • the first electrode pattern 2 has a structure that causes electric field concentration. More specifically, in the light emitting device of the present embodiment, the first electrode pattern 2 includes a planar portion 21 and a plurality of protruding portions 22 provided on the planar portion 21. Therefore, the light emitting device of the present embodiment can improve the light emission intensity or the light emission amount while reducing the size.
  • the second electrode pattern 3 is substantially made of a translucent material, whereby the light emission intensity or the light emission amount can be improved.
  • the region where the second electrode pattern 3 is formed is larger than the region of the discharge space 13 in plan view, so that the light emitting device can effectively use the discharge space 13. Therefore, the light emitting device of the present embodiment can improve the light emission amount while reducing the size.
  • the light-emitting device in the 2nd Embodiment of this invention is demonstrated.
  • the light emitting device according to the second embodiment differs from the light emitting device according to the first embodiment shown in FIG. 2, for example, in that the base 11 further includes a reflecting member 115.
  • Other configurations are the same as those of the light emitting device according to the first embodiment.
  • the reflection member 115 is exposed to the discharge space 13.
  • the reflection member 115 is a porous structure.
  • the “porous structure” is a structure having a plurality of particles 116 and has a porosity included in a range of 15% to 43%.
  • An exemplary method for measuring the porosity of the reflecting member 115 is a mercury intrusion method using a Pore Sizer 9310 manufactured by Micromeritics.
  • the particle 116 has a higher refractive index than the vesicle 117. The light incident on the particle 116 is totally reflected at the interface between the particle 116 and the vesicle 117.
  • the reflecting member 115 is substantially made of ceramics, for example.
  • the light emitting device in the present embodiment includes the reflecting member 115, so that the amount of light generated in the discharge space 13 that can be reflected in the light emitting direction can be increased. Therefore, the light emitting device in this embodiment is improved with respect to the light emission intensity or the light emission amount.
  • the reflecting member 115 is a porous structure, the amount of light reflection can be increased by total reflection of light. Therefore, the light emitting device in this embodiment is improved with respect to the light emission intensity or the light emission amount.
  • the light emitting device according to the present embodiment is improved in terms of usage resistance because the reflecting member 115 is substantially made of ceramics.
  • the light emitting device according to the third embodiment is different from the light emitting device according to the first embodiment shown in FIG. 2, for example, in that it further includes a spacer member 14 provided in the discharge space 13.
  • Other configurations are the same as those of the light emitting device according to the first embodiment.
  • the light emitting device in the present embodiment includes the spacer member 14, thereby reducing the deformation of the translucent member 12 toward the inside of the discharge space. Therefore, the light emitting device in this embodiment is improved with respect to reliability.
  • the spacer member 14 is preferably joined to the translucent member 12. With such a configuration, the light emitting device is reduced with respect to the outward deformation of the translucent member 12 and is improved with respect to reliability.
  • the light-emitting device in the 4th Embodiment of this invention differs from the light emitting device of the first embodiment shown in FIG. 2, for example, in that the discharge space 13 includes a plurality of subspaces 131-133. Other configurations are the same as those of the light emitting device according to the first embodiment.
  • the plurality of subspaces 131-133 are mutually independent spaces.
  • the discharge space 13 includes a plurality of subspaces 131-133, so that the light emitting device of the other embodiment increases the degree of freedom regarding the setting of discharge conditions in the discharge space 13. Can do.
  • Each of the plurality of subspaces 131-133 has a different emission intensity.
  • the subspaces 131 and 133 located at both ends of the discharge space 13 are designed to have a larger emission intensity than the subspace 132 located at the center of the discharge space.
  • Each of the subspaces 131-133 differs with respect to the pressure of the inert gas 4 enclosed, for example.
  • the first electrode pattern 2 and the second electrode pattern 3 are provided corresponding to each of the plurality of subspaces 131-133. That is, the first electrode pattern 2 and the second electrode pattern 3 include sub-electrodes corresponding to each of the plurality of sub-spaces 131-133.
  • each of the plurality of subspaces 131-133 has a different light emission intensity or light emission amount, so that the light emitting device can realize an appropriate light irradiation space according to the intended use.
  • the light-emitting device in the 5th Embodiment of this invention is demonstrated.
  • the difference from the light emitting device in the first embodiment shown in FIG. 2 is that the peripheral region 135 is more per unit area than the central region 134 in the discharge space 13.
  • the density of the discharge points is high.
  • Other configurations are the same as those of the light emitting device according to the first embodiment.
  • the density of discharge points per unit area in the discharge space 13 is different, so that the light emitting device of other embodiments can realize an appropriate light irradiation space according to the intended use. it can.
  • the first electrode pattern 2 and the second electrode pattern 3 have a peripheral region 135 in the peripheral region 135 as compared with the central region 134 in the discharge space 13. Designed to be high with respect to pattern density.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

La présente invention concerne un dispositif électroluminescent, tel qu'une lampe à décharge électrique. Le dispositif électroluminescent comprend : un élément réceptacle comportant un espace de décharge ; un gaz inerte scellé dans l'espace de décharge ; un premier motif d'électrode agencé en dessous de l'espace de décharge ; et un second motif d'électrode faisant face au premier motif d'électrode, l'espace de décharge étant placé entre eux. L'élément réceptacle comprend un élément translucide recouvrant l'espace de décharge. Le premier motif d'électrode est incorporé dans l'élément réceptacle. Le second motif d'électrode est agencé dans la surface externe de l'élément translucide ou sur celle-ci.
PCT/JP2010/055835 2009-09-30 2010-03-31 Dispositif électroluminescent et tube électroluminescent WO2011040068A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009227779 2009-09-30
JP2009-227779 2009-09-30

Publications (1)

Publication Number Publication Date
WO2011040068A1 true WO2011040068A1 (fr) 2011-04-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016027535A (ja) * 2014-06-26 2016-02-18 京セラ株式会社 発光装置およびそれを備えた電子機器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001118541A (ja) * 1999-10-21 2001-04-27 Matsushita Electric Ind Co Ltd 発光デバイス
JP2008505442A (ja) * 2004-06-30 2008-02-21 ゼネラル・エレクトリック・カンパニイ プロジェクタ用ランプを設計するためのシステムおよび方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001118541A (ja) * 1999-10-21 2001-04-27 Matsushita Electric Ind Co Ltd 発光デバイス
JP2008505442A (ja) * 2004-06-30 2008-02-21 ゼネラル・エレクトリック・カンパニイ プロジェクタ用ランプを設計するためのシステムおよび方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016027535A (ja) * 2014-06-26 2016-02-18 京セラ株式会社 発光装置およびそれを備えた電子機器

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