WO2006067882A1 - キセノン放電型の二層式平面蛍光ランプ - Google Patents
キセノン放電型の二層式平面蛍光ランプ Download PDFInfo
- Publication number
- WO2006067882A1 WO2006067882A1 PCT/JP2005/011694 JP2005011694W WO2006067882A1 WO 2006067882 A1 WO2006067882 A1 WO 2006067882A1 JP 2005011694 W JP2005011694 W JP 2005011694W WO 2006067882 A1 WO2006067882 A1 WO 2006067882A1
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- WO
- WIPO (PCT)
- Prior art keywords
- glass substrate
- layer
- conductive film
- lamp
- fluorescent lamp
- Prior art date
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Classifications
-
- 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
- H01J61/305—Flat vessels or containers
-
- 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
Definitions
- the present invention relates to a liquid crystal display backlight for generating luminance on the display surface of a liquid crystal display by irradiating the back surface of the liquid crystal display that does not emit light, and in detail, the present invention mainly relates to a large liquid crystal television This is related to a large-area, thin xenon discharge flat fluorescent lamp for liquid crystal display backlights. Background art
- the outline of the conventional xenon discharge type flat fluorescent lamp disclosed in Patent Document 1 is, as shown in FIG. 6, a transparent conductive film 81, a transparent dielectric film 82, and a phosphor coating 83 on the inner surface.
- the formed front glass substrate 8 and the back glass substrate 9 on which the opaque conductive film 91, the transparent dielectric film 92, and the phosphor coating film 93 are formed on the inner surface are glass beads for a spacer 10
- the lamp seal is formed by welding the outer peripheral portion through the frit glass 10 with 1 interposed therebetween, and the inside is a rare gas layer 102 filled with a rare gas such as xenon gas. There is.
- the transparent conductive film 81 formed on the front glass substrate 8 which is the light emitting surface has an essentially large electric resistance, it generates heat due to the current at the time of lighting and adversely affects the liquid crystal. It had become.
- Non-Patent Document 1 a xenon discharge type round tube fluorescent lamp disclosed in Non-Patent Document 1 will be described.
- the outline is that a phosphor coating with an opening is formed on the inner surface of the glass tube, and a pair of opaque conductive films are formed on the outer surface of the glass tube so as to face each other across the opening of the phosphor coating.
- a noble gas such as xenon gas is enclosed inside.
- a xenon discharge occurs to emit light. That is, this can be said to be a precedent example of a xenon discharge type fluorescent lamp utilizing a glass tube (glass substrate) constituting a lamp seal as a transparent dielectric film.
- Patent Document 1 Japanese Patent Application Laid-Open No. 6- 1 6 7 3 6
- the problem to be solved by the present invention is that, in the flat fluorescent lamp of the xenon discharge type, firstly, a new spacer means which does not require special glass beads is established, and the large area can withstand external pressure. To realize the structure that Next, the transparent conductive film formed on the glass substrate, which is the light emitting surface, generates heat by the current at the time of lighting and has an adverse effect on the liquid crystal because the electric resistance is intrinsically large. To form a thermal insulation layer.
- the problem is solved by using a planar fluorescent lamp of a xenon discharge type as a two-layer flat fluorescent lamp.
- a spacer means As a spacer means, a front glass substrate having a plurality of rows of dotted V-shaped grooves protruding on the back side at a predetermined interval that can withstand external pressure, a transparent conductive film is formed on the entire front side, An auxiliary conductive film is formed on the outer peripheral portion of the side, and a plurality of dotted V-shaped grooves protruding on the back side are formed as spacer means at predetermined intervals to withstand the external pressure.
- An intermediate glass substrate having a phosphor coating formed on the back side, and an opaque conductive film formed on the entire back side, and as a spacer means, projections on the surface side at a predetermined interval that can withstand the external pressure.
- the two-layered lamp seal shall be formed by aligning the outer layer in three steps and aligning the outer layer with a flit glass to form a two-layer lamp seal, so that the two layers will be formed.
- the problem is solved by using a vacuum heat insulation layer as the rear side layer and a structure of a xenon discharge type flat fluorescent lamp in which a rare gas such as xenon gas is sealed.
- the dotted V-shaped groove is like a long groove with a V-shaped cross section cut into a dotted short groove, and the contact on the projection side is the front side of the two-layered lamp seal.
- short and long line contact is intended, and in the rear layer, it is intended to be point contact.
- the protrusion sides of the dotted V-shaped grooves formed at predetermined intervals to withstand the external pressure contact as a spacer means between the glass substrates This makes it possible to maintain the gap between the glass substrates, and solve the problems of establishing a new spacer system that does not require glass beads and realizing a structure that can withstand large atmospheric pressure even with large areas. It is a thing.
- a double-layered lamp envelope is formed, and the layer on the front side is a vacuum heat insulating layer, and the layer on the rear side is a structure of a flat fluorescent lamp of a xenon discharge type in which a rare gas such as xenon gas is enclosed.
- the present invention addresses the problem of forming a heat insulating layer on the front of a lamp.
- the following effects can be obtained by using the Xenon discharge type flat fluorescent lamp as a two-layer flat fluorescent lamp.
- point-line-shaped V-shaped grooves are formed on the front glass substrate, the intermediate glass substrate and the back glass substrate constituting the two-layered flat fluorescent lamp as spacer means at predetermined intervals that can withstand the external pressure. This not only eliminates the need for conventional custom-made expensive glass beads, but also achieves a structure that can withstand external pressure even with a large area.
- FIG. 1 is a plan view of the two-layered flat fluorescent lamp according to the present invention with a broken part for explanation.
- FIG. 2 is a side view of the two-layered flat fluorescent lamp according to the present invention with a broken part for explanation.
- FIG. 3 is a cross-sectional view taken along the line AA of FIG. 1 of the two-layer flat fluorescent lamp according to the present invention.
- FIG. 4 is a cross-sectional view taken along line B-B of FIG. 1 of the two-layered flat fluorescent lamp according to the present invention.
- FIG. 5 is a cross-sectional view taken along the line C-C of FIG. 1 of the two-layer flat fluorescent lamp according to the present invention.
- FIG. 6 is a cross-sectional view showing an outline of a conventional flat fluorescent lamp.
- FIG. 1, FIG. 2, FIG. 3, FIG. 3, FIG. 4 and FIG. A front glass substrate 1 having a plurality of rows of dotted V-shaped grooves 11 projecting on the back side with a predetermined interval that can withstand, a transparent conductive film 23 formed on the entire front side, and an outer peripheral portion on the front side
- the auxiliary conductive film 24 is formed by overlapping, and in the range excluding the welded portion on the outer periphery, as a spacer means, plural lines of dotted lines protruding on the back side at a predetermined interval that can withstand the external pressure.
- the V-shaped groove 21 is formed, and at the end of one side, an exhaust pipe groove 41 projecting on the back side and an exhaust pipe groove 51 projecting on the front side are formed.
- the intermediate glass substrate 2 on which the phosphor coating 2 2 is formed in the excluded range, and the opaque conductive film 33 on the entire back surface side are formed as spacer means at predetermined intervals that can withstand external pressure.
- the dotted line V-shaped grooves 21 and 31 formed in the intermediate glass substrate 2 and the rear surface glass substrate 3 are orthogonal to each other so that the flat surface on the front side is in contact, and the projection side is phosphor coating 22
- the end of the intermediate glass substrate 2 pops out from the lamp seal
- the exhaust pipe 4 and 5 and the glass frame plate 6 are stacked in three steps, and the outer peripheral portion is welded via the frit glass 7 to form a two-layered lamp seal, and the front layer A vacuum thermal insulation layer 42 is used, and a layer on the rear side is a rare gas layer 52 filled with a rare gas such as xenon gas to form a Xenon discharge double-layer flat fluorescent lamp.
- the light emitting surface as the liquid crystal backlight is on the front glass substrate 1 side.
- V-shaped grooves 1 1, 2 1 and 3 1 are obtained by dividing a long groove having a V-shaped cross section into short grooves having dotted lines. The reason for making the grooves dotted is to secure as much area of the flat portion of the glass substrate as possible for the xenon discharge.
- the groove is V-shaped is that, when the protrusion side of the dotted V-shaped groove 11 of the front glass substrate 1 contacts the flat portion on the surface side of the intermediate glass substrate 2, the contact portion has a short length of line contact and This is because the loss of the heat insulating effect in the vacuum heat insulating layer 42 can be reduced. Also, the dotted line V-shaped groove 21 of the intermediate glass substrate 2 and the dotted V-shaped groove 31 of the back surface glass substrate 3 are orthogonal to each other, and the protrusions are in contact with the phosphor coating 22 or 32 interposed therebetween.
- the generation area of the non-light-emitting portion in the form of a point due to the contact of the phosphor coating 22 and 32 may be small.
- each corner of the groove needs to be a small curve to maintain the strength of the glass.
- the predetermined interval which can withstand the external pressure of the dotted V-shaped groove is determined in consideration of the correlation among the thickness of the glass substrate, the internal pressure of the lamp seal, the external pressure (usually one atmospheric pressure) and the like.
- the noble gas sealed in the noble gas layer 52 is a mixed gas of xenon gas and neon gas to prevent abnormal discharge such as flickering of light emission and stabilize xenon discharge. It is desirable to use% to 45%. Also, in order to enhance the brightness, it is desirable to set the filling gas pressure to 3 O k Pa to 6 0 k Pa.
- the intermediate glass substrate 2 and the rear glass substrate 3 play the role of a transparent dielectric film necessary to spread the xenon discharge uniformly over the noble gas layer 52.
- the material of the transparent conductive film 23 formed on the entire surface side of the intermediate glass substrate 2 is indium tin oxide (ITO), which is proven in liquid crystal displays etc. Before forming the dotted V-shaped groove 21 After the formation, it is formed by a method such as sputtering.
- the material of the auxiliary conductive film 24 formed over the transparent conductive film 23 is formed on the outer peripheral portion of the surface side of the intermediate glass substrate 2 in order to assist the lowering of the electric resistance of the transparent conductive film 23 and the heat radiation.
- Electrical resistance is small heat Choose from gold, silver, copper, etc. with high conductivity, and as shown in Figure 1, Figure 3, Figure 4 and Figure 5, a suitable method after or before the formation of the transparent conductive film 23 It shall be formed by
- the material of the opaque conductive film 33 formed on the entire back surface side of the back glass substrate 3 is selected from aluminum, silver, nickel, etc. having a small electric resistance and a large light reflectance, and the dotted V-shaped groove 31 is It shall be formed by an appropriate method before or after formation.
- the materials of the phosphor coating 22 and 32 formed on the intermediate glass substrate 2 and the rear glass substrate 3 are selected from phosphors matching the wavelength of ultraviolet light emitted by xenon gas, and are formed by a method such as spraying. It shall be.
- Attachment of the exhaust pipe 4 and the exhaust pipe 5 necessary for exhausting the lamp seal and enclosing the rare gas includes an exhaust pipe groove 41 formed on the intermediate glass substrate 2 and The exhaust pipe 4 is inserted into the exhaust pipe groove 51 respectively, and the exhaust pipe 4 is penetrated only into the vacuum heat insulation layer 42 of the lamp seal, and the exhaust pipe 5 is penetrated only into the rare gas layer 52 of the lamp seal. With the glass frame plate 6 sandwiched between portions other than the mounting portions 4 and the exhaust pipe 5, welding is performed via the frit glass 7. After exhausting the vacuum heat insulating layer 42 and after exhausting the rare gas layer 52 and filling the rare gas, as shown in FIG. 1, the exhaust pipe 4 and the exhaust pipe 5 are heated and sealed. Do.
- a xenon discharge occurs to generate ultraviolet light, which is stimulated by the ultraviolet light to cause the phosphor coating 22 and the phosphor coating 32 to emit light and to be turned on.
- applications to light sources for copying machines can be considered as applications in other fields.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004382608A JP2006040862A (ja) | 2004-09-03 | 2004-12-20 | 二層式平面蛍光ランプ |
JP2004-382608 | 2004-12-20 | ||
JP2005059603 | 2005-02-04 | ||
JP2005-59603 | 2005-02-04 | ||
JP2005-154555 | 2005-04-26 | ||
JP2005154555A JP3998069B2 (ja) | 2005-02-04 | 2005-04-26 | キセノン放電型の二層式平面蛍光ランプ |
Publications (1)
Publication Number | Publication Date |
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WO2006067882A1 true WO2006067882A1 (ja) | 2006-06-29 |
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ID=36601493
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2005/011694 WO2006067882A1 (ja) | 2004-12-20 | 2005-06-21 | キセノン放電型の二層式平面蛍光ランプ |
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WO (1) | WO2006067882A1 (ja) |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5846568A (ja) * | 1981-09-12 | 1983-03-18 | Michiharu Nakayama | 内部に支柱をもつた電球 |
JPS61264654A (ja) * | 1985-05-17 | 1986-11-22 | Sanyo Electric Co Ltd | 螢光ランプ |
JPH0175958U (ja) * | 1987-11-09 | 1989-05-23 | ||
JPH0298452U (ja) * | 1989-01-23 | 1990-08-06 | ||
JPH03225743A (ja) * | 1990-01-29 | 1991-10-04 | Nec Home Electron Ltd | 平面型希ガス放電灯 |
JPH04503281A (ja) * | 1989-02-11 | 1992-06-11 | スミスズ インダストリーズ パブリック リミテッド カンパニー | 光放射パネル及び表示装置 |
JPH0433637Y2 (ja) * | 1987-07-30 | 1992-08-12 | ||
JPH04345747A (ja) * | 1991-05-24 | 1992-12-01 | Tatsuji Mizobe | 自発光型フラットランプ |
JPH05504439A (ja) * | 1989-12-11 | 1993-07-08 | パーカー,ウィリアム ピー. | 発光パネルディスプレイデバイス |
JPH10283999A (ja) * | 1997-03-31 | 1998-10-23 | Meitaku Syst:Kk | 面光源用二重封止ランプ |
JP2002298784A (ja) * | 2001-03-29 | 2002-10-11 | Sanyo Electric Co Ltd | 平面型紫外線ランプ |
JP2003031182A (ja) * | 2001-07-11 | 2003-01-31 | Lecip Corp | 平面型放電管 |
-
2005
- 2005-06-21 WO PCT/JP2005/011694 patent/WO2006067882A1/ja active Application Filing
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5846568A (ja) * | 1981-09-12 | 1983-03-18 | Michiharu Nakayama | 内部に支柱をもつた電球 |
JPS61264654A (ja) * | 1985-05-17 | 1986-11-22 | Sanyo Electric Co Ltd | 螢光ランプ |
JPH0433637Y2 (ja) * | 1987-07-30 | 1992-08-12 | ||
JPH0175958U (ja) * | 1987-11-09 | 1989-05-23 | ||
JPH0298452U (ja) * | 1989-01-23 | 1990-08-06 | ||
JPH04503281A (ja) * | 1989-02-11 | 1992-06-11 | スミスズ インダストリーズ パブリック リミテッド カンパニー | 光放射パネル及び表示装置 |
JPH05504439A (ja) * | 1989-12-11 | 1993-07-08 | パーカー,ウィリアム ピー. | 発光パネルディスプレイデバイス |
JPH03225743A (ja) * | 1990-01-29 | 1991-10-04 | Nec Home Electron Ltd | 平面型希ガス放電灯 |
JPH04345747A (ja) * | 1991-05-24 | 1992-12-01 | Tatsuji Mizobe | 自発光型フラットランプ |
JPH10283999A (ja) * | 1997-03-31 | 1998-10-23 | Meitaku Syst:Kk | 面光源用二重封止ランプ |
JP2002298784A (ja) * | 2001-03-29 | 2002-10-11 | Sanyo Electric Co Ltd | 平面型紫外線ランプ |
JP2003031182A (ja) * | 2001-07-11 | 2003-01-31 | Lecip Corp | 平面型放電管 |
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