WO2006054413A1 - 外部電極蛍光ランプ、照明装置及び表示装置 - Google Patents
外部電極蛍光ランプ、照明装置及び表示装置 Download PDFInfo
- Publication number
- WO2006054413A1 WO2006054413A1 PCT/JP2005/019069 JP2005019069W WO2006054413A1 WO 2006054413 A1 WO2006054413 A1 WO 2006054413A1 JP 2005019069 W JP2005019069 W JP 2005019069W WO 2006054413 A1 WO2006054413 A1 WO 2006054413A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- external electrode
- display device
- fluorescent lamp
- lamp
- electrode fluorescent
- Prior art date
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims description 10
- 238000005286 illumination Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052753 mercury Inorganic materials 0.000 claims description 5
- 229910052724 xenon Inorganic materials 0.000 claims description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims description 2
- 230000004323 axial length Effects 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 8
- 239000011888 foil Substances 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133604—Direct backlight with lamps
Definitions
- the present invention relates to an external electrode fluorescent lamp.
- the external electrode fluorescent lamp is attached to the backlight unit by holding the external electrode portion with a holding metal fitting connected to the power supply unit as in the above publicly known document 1. Speak like you do.
- an object of the present invention is to extend (narrow) the effective light emission area of the backlight unit on which the external electrode fluorescent lamp is mounted, in a simple manner, exceeding the limitations of the conventional example.
- the purpose is to create a frame.
- At least two or more external electrode lamps may be electrically connected in parallel.
- the tube axis of the external electrode portion is coaxial with the tube axis of the light emitting portion.
- the knocklight unit has a simpler configuration.
- the frame can be narrowed, that is, the effective light emitting area can be enlarged. This will greatly contribute to the progress of higher brightness in the future backlight unit.
- FIG. 1 shows an external electrode fluorescent lamp according to a first embodiment of the present invention.
- FIG. 2 shows a conventional external electrode fluorescent lamp and its attachment to the holder in a front view in (a) and a side view in (b).
- FIG. 3 is a front view showing the state of attachment to the holder of the external electrode fluorescent lamp of the first embodiment of the present invention
- FIG. 3 (b) is a plan view. .
- FIG. 7 is a longitudinal sectional view of an external electrode fluorescent lamp that reflects the gist of the present invention and is provided in the backlight of a liquid crystal display device.
- FIG. 1 shows a single lamp according to a first embodiment of the present invention.
- the lamp 1 of this embodiment includes a light emitting section 2 having a straight tube axis, and external electrode sections at both ends of which the tube axis is orthogonal to the tube axis of the light emitting section 2. It consists of three. The direction of the tube axis of the external electrode part 3 at both ends is the same, and the downward direction is illustrated in the figure.
- An external electrode 4 is mounted on the outer peripheral surface of the external electrode portion 3.
- the external electrode 4 may be any of a proximity conductor, a silver paste, or a metal foil (aluminum foil) as shown in the conventional example.
- FIG. 2 shows a front view of a conventional external electrode fluorescent lamp and its attachment to a holder, and (b) is a side view. is there.
- reference numeral 11 is given to the lamp of the conventional example
- 12 is given to the light emitting part
- 13 is given to the external electrode part
- 14 is given to the external electrode.
- FIG. 3 is a front view of the lamp 1 attached to the holder of the present embodiment for comparison with the conventional example.
- FIG. 3 is a front view and
- FIG. 3 (b) is a plan view. It is.
- the structure of the holder for each lamp unit is the same in both the present embodiment and the conventional example, and the reference numeral 5 is also used.
- the tube axis of the external electrode portion 13 is parallel (coaxial) to the tube axis of the lamp 11, the light emitting portion 12 of the lamp 11 of the conventional example is placed horizontally as shown in FIG. If it is disposed in the tube, the tube axis of the external electrode portion 13 is also horizontal.
- FIG. 4 schematically shows a case where the lamp of the conventional unit and the lamp 1 of the present embodiment are mounted on the holder of the backlight unit under the conditions that the lamp mounting area of the backlight unit has the same shape and the same area. Show. In the figure, in order to avoid complication, only the rectangular frame 6 of the lamp mounting area on the knock light unit side is shown, and the component elements actually mounted such as the holder are not shown.
- the lamp 1 of the present embodiment and the lamp 11 of the conventional example are attached to the backlight unit under the condition that the mounting area of the lamp of the knocklight unit is the same shape and area.
- the size of the frame portion is the outermost diameter size d of the external electrode 4, and the size of the frame portion in the conventional example is the dimension D in the axial direction of the external electrode 14.
- the length of the external electrodes 4 and 14 in the tube axis direction is set longer than the outermost diameter of the external electrodes 4 and 14 from the viewpoint of strength as a holding portion. Therefore, when the lamp 1 of the present embodiment is used, the effective light emission area of the knocklight unit can be made larger than when the conventional lamp 11 is used.
- FIG. 5 (a) shows the external appearance of the external electrode fluorescent lamp 21 of the second embodiment.
- the lamp 21 is formed by forming a glass tube in a rectangular ring shape, and the adjacent conductor, silver paste or metal foil similar to the conventional example on the outer peripheral surface of each position of the rectangular opposing short side. Etc. are attached to form external electrodes.
- annular lamp 21 When such an annular lamp 21 is used in a backlight unit, one external electrode 14 connected to each frame portion (external electrode portion) of the knock light unit is held.
- the two lamps 1 can be held with one holder. Therefore, each of the external electrodes 4 of the two lamps 1 is individually held, and compared with the conventional case where two holders are required, the effective light emitting area of the knocklight unit is expanded and the number of parts is reduced. Can be reduced. Also, when the lamp is mounted, the effort is halved, and the assembly efficiency is improved.
- the effort to remove the lamp can be reduced by half by disassembling the lighting device etc. that it was used for and recycling or disposal. In this case, since these operations can be performed safely and easily, it will greatly meet the demands of today's society where environmental protection is strongly screamed.
- FIG. 5 (b) is a cross-sectional view of the annular external electrode fluorescent lamp 21 shown in FIG. 5 (a).
- the inside of the glass tube of the formed structure is schematically shown in a sectional view.
- the glass tube 7 of this embodiment has an annular glass tube that is divided into two separate discharge gas spaces by a glass wall and is electrically divided. Therefore, a positive column can be reliably connected to each of both discharge gas spaces.
- FIG. 7 is a longitudinal sectional view of a liquid crystal display device using the display illumination device with the external electrode fluorescent lamp shown in FIG. 3 as a backlight.
- the backlight 20 having the optical sheet 21 disposed on the exit surface side and the liquid crystal panel 25 are sandwiched by a metal bezel 30.
- the knocklight 20 is located immediately below the back side of the liquid crystal panel 25, and the external electrode fluorescent lamp shown in FIG.
- Four amplifiers 1 are arranged at equal intervals with the tube axis of the main body (light emitting part 2) being horizontal.
- the back surface of the fluorescent lamp 1 is covered with a case 23 having a substantially concave cross section with a reflection sheet 22 attached to the inner peripheral surface.
- a diffusion plate 24 is disposed between the fluorescent lamp 1 and the optical sheet 21 to reduce variation in light from the fluorescent lamp 1.
- the attachment of the fluorescent lamp 1 to the concave case 23 does not appear in FIG. 7, but has a form as shown in FIG. 3 (a). That is, the holders combined with the panel steel plates shown in FIG. 3 (a) are attached to the left and right sides of the concave case 23 as viewed from the front, and the holders shown in FIG.
- the fluorescent lamp 1 is attached by sandwiching an attachment portion (external electrode portion) bent in a direction perpendicular to the tube axis of the main body.
- the external electrode fluorescent lamp of the present invention can be applied to all backlight units used in transmission type liquid crystal display devices and the like.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Electromagnetism (AREA)
- Planar Illumination Modules (AREA)
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Liquid Crystal (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006544817A JPWO2006054413A1 (ja) | 2004-11-17 | 2005-10-18 | 外部電極蛍光ランプとそれを備えた表示装置用照明装置およびその表示装置 |
US11/718,972 US20080012498A1 (en) | 2004-11-17 | 2005-10-18 | External Electrode Flourescent Lamp, Lighting Device, And Display Device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-332578 | 2004-11-17 | ||
JP2004332578 | 2004-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006054413A1 true WO2006054413A1 (ja) | 2006-05-26 |
Family
ID=36406959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/019069 WO2006054413A1 (ja) | 2004-11-17 | 2005-10-18 | 外部電極蛍光ランプ、照明装置及び表示装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20080012498A1 (ja) |
JP (1) | JPWO2006054413A1 (ja) |
WO (1) | WO2006054413A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007026798A (ja) * | 2005-07-14 | 2007-02-01 | Matsushita Electric Ind Co Ltd | 外部電極型放電ランプおよびバックライトユニット |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100706184B1 (ko) * | 2005-12-26 | 2007-04-12 | 주식회사 디엠에스 | 형광램프 및 이의 제조방법 |
TWI334043B (en) * | 2007-05-09 | 2010-12-01 | Au Optronics Corp | Direct-type backlight module and lamp holder thereof |
CN102759079A (zh) | 2012-07-17 | 2012-10-31 | 深圳市华星光电技术有限公司 | 抵抗外来力量的背板及其背光模块和液晶显示器 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002008408A (ja) * | 2000-04-15 | 2002-01-11 | 光燮 ▲チョー▼ | 蛍光ランプ、バックライト及びバックライト駆動方法 |
JP2003036723A (ja) * | 2001-07-19 | 2003-02-07 | Harison Toshiba Lighting Corp | 照明装置 |
JP2003168395A (ja) * | 2001-11-30 | 2003-06-13 | Harison Toshiba Lighting Corp | バックライトユニット |
JP2004200127A (ja) * | 2002-12-20 | 2004-07-15 | Harison Toshiba Lighting Corp | 照明装置 |
JP2004253248A (ja) * | 2003-02-20 | 2004-09-09 | Harison Toshiba Lighting Corp | 外部電極蛍光ランプ及び照明装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6674250B2 (en) * | 2000-04-15 | 2004-01-06 | Guang-Sup Cho | Backlight including external electrode fluorescent lamp and method for driving the same |
JP2002072205A (ja) * | 2000-09-04 | 2002-03-12 | Hitachi Ltd | 液晶表示装置 |
-
2005
- 2005-10-18 WO PCT/JP2005/019069 patent/WO2006054413A1/ja active Application Filing
- 2005-10-18 JP JP2006544817A patent/JPWO2006054413A1/ja active Pending
- 2005-10-18 US US11/718,972 patent/US20080012498A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002008408A (ja) * | 2000-04-15 | 2002-01-11 | 光燮 ▲チョー▼ | 蛍光ランプ、バックライト及びバックライト駆動方法 |
JP2003036723A (ja) * | 2001-07-19 | 2003-02-07 | Harison Toshiba Lighting Corp | 照明装置 |
JP2003168395A (ja) * | 2001-11-30 | 2003-06-13 | Harison Toshiba Lighting Corp | バックライトユニット |
JP2004200127A (ja) * | 2002-12-20 | 2004-07-15 | Harison Toshiba Lighting Corp | 照明装置 |
JP2004253248A (ja) * | 2003-02-20 | 2004-09-09 | Harison Toshiba Lighting Corp | 外部電極蛍光ランプ及び照明装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007026798A (ja) * | 2005-07-14 | 2007-02-01 | Matsushita Electric Ind Co Ltd | 外部電極型放電ランプおよびバックライトユニット |
Also Published As
Publication number | Publication date |
---|---|
JPWO2006054413A1 (ja) | 2008-05-29 |
US20080012498A1 (en) | 2008-01-17 |
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