CN1688013A - External electrode fluorescent lamp with transmitting film coated internal wall - Google Patents
External electrode fluorescent lamp with transmitting film coated internal wall Download PDFInfo
- Publication number
- CN1688013A CN1688013A CN 200510039187 CN200510039187A CN1688013A CN 1688013 A CN1688013 A CN 1688013A CN 200510039187 CN200510039187 CN 200510039187 CN 200510039187 A CN200510039187 A CN 200510039187A CN 1688013 A CN1688013 A CN 1688013A
- Authority
- CN
- China
- Prior art keywords
- external electrode
- glass
- transmitting film
- tube
- coated
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
This invention relates to an external electrode fluorescence lamp coated with an emitting membrane on the inside wall used in large screen display. Its structure is: phosphor powder is coated on the middle section of the inside wall of a glass tube, two metal emit membranes are coated on both ends of inside wall of the glass tube, external electrodes are set on both ends of the tube surface. Advantage: since the external electrode generates capacitance couple not with the glass inside wall but the inside wall metal film layer via a glass medium, the emit ability is increased greatly.
Description
Technical field:
The present invention relates to a kind of external electrode fluorescence lamp that is used for the transmitting film coated internal wall of large scale display, have the lamp tube electrode of raising emissivities, increase the characteristics of screen intensity.Belong to the fluorescent lamp technical field.
Background technology
LCD display mostly adopts cold-cathode fluorescence lamp (CCFL) as backlight at present, increase along with display screen, keep screen intensity then to need many tubes, and every CCFL needs by an independently driving power power supply, thereby technical scheme complexity, it is big to take up room, and reliability is low, the product cost height; External electrode fluorescence lamp (EEFL) is because its peculiar voltage-current characteristic can make one group of fluorescent tube drive by a driving power is in parallel, but weak point is: because its discharge is that external electrode passes through glass medium layer and the coupling of glass-tube inwall on the glass wall by being coated in, its emission ratio is much smaller than metal electrodes such as aluminium, nickel, so compare with CCFL, it is little that same electrical is depressed discharging current, job insecurity under the low temperature, 35%-40% is hanged down in brightness.
Summary of the invention
The objective of the invention is to overcome existing cold-cathode fluorescence lamp (CCFL) multitube can not a shared driving power; External electrode fluorescence lamp (EEFL) luminous efficiency is low, defective such as unstable working condition provides a kind of novel external electrode fluorescence lamp under the low temperature, and this fluorescent lamp not only has general external electrode fluorescence lamp characteristics, and it is low to have a driving voltage, the advantage that luminosity is high.
Technical solution of the present invention: its structure is to be coated with fluorescent material on the section surface in the inwall of glass-tube, matel coated transmitting film on inwall two ends of glass-tube, glass-tube two ends, surface on establish external electrode.
The invention has the beneficial effects as follows, because external electrode is by glass medium and inwall metallic diaphragm rather than glass inwall generation capacitively coupled, electron emissivity obviously strengthens, and can obtain stable discharging current under lower voltage, has guaranteed luminous stability; Depressing, can obtain bigger discharging current, thereby improve the brightness of lamp with common EEFL same electrical.
Description of drawings
Accompanying drawing is a structural representation of the present invention
Among the figure 1 is glass-tube, the 2nd, fluorescent material, the 3rd, metal transmitting film, the 4th, external electrode
Embodiment
Contrast accompanying drawing, its structure are to be coated with fluorescent material 2 on the section surface in the inwall of glass-tube 1, matel coated transmitting film 3 on inwall two ends of glass-tube 1, glass-tube 1 two ends, surface on establish external electrode 4.
The manufacture method of the external electrode fluorescence lamp of transmitting film coated internal wall, its processing step divides one, glass-tube is cut into corresponding size, and cleans; Two, on the inwall at glass-tube two ends, plate the metal transmitting film with evaporation or chemical method; Three, remove the metal transmitting film at sealing-in position, two ends with the method for chemical etching; Four, be coated with fluorescent material, the roasting binding agent that goes in the powder, wipe the surplus powder at sealing-in position; Five, the first end glass-tube is sealed; Six, exhaust, charge into inert mixed gas, annotate mercury, from the gas extraction system sealed-off; Seven, secondary sealed-off; Eight, on the outer glass wall of the same position of glass-tube two ends inwall metallic diaphragm, be coated with the external electrode that is covered with graphite or silver oxide coating.
External electrode, is applied on the metal transmitting film of inwall in the high frequency voltage ingress pipe by capacitively coupled, makes the gaseous mixture of inert gas and mercury produce discharge, gives off the 253.7nm ultraviolet ray, is converted into visible light by fluorescent material again.
The present invention since external electrode by glass medium and inwall metallic diaphragm rather than glass inwall generation capacitively coupled, electron emissivity obviously strengthens, and can obtain stable discharging current under lower voltage, has guaranteed luminous stability; Depressing, can obtain bigger discharging current, thereby improve the brightness of lamp with common EEFL same electrical.
Claims (2)
1, the external electrode fluorescence lamp of transmitting film coated internal wall, it is characterized in that in the inwall of glass-tube (1), being coated with on the section surface fluorescent material (2), matel coated transmitting film (3) on inwall two ends of glass-tube (1), glass-tube (1) two ends, surface on establish external electrode (4).
2, the external electrode fluorescence lamp of transmitting film coated internal wall according to claim 1 is characterized in that plating metal transmitting film (3) with evaporation or chemical method on the inwall at glass-tube two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510039187 CN1688013A (en) | 2005-04-30 | 2005-04-30 | External electrode fluorescent lamp with transmitting film coated internal wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510039187 CN1688013A (en) | 2005-04-30 | 2005-04-30 | External electrode fluorescent lamp with transmitting film coated internal wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1688013A true CN1688013A (en) | 2005-10-26 |
Family
ID=35306054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510039187 Pending CN1688013A (en) | 2005-04-30 | 2005-04-30 | External electrode fluorescent lamp with transmitting film coated internal wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1688013A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100361270C (en) * | 2005-06-17 | 2008-01-09 | 东南大学 | External electrode fluorescent lamp tube with high light optical effect low operating voltage and process for making same |
-
2005
- 2005-04-30 CN CN 200510039187 patent/CN1688013A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100361270C (en) * | 2005-06-17 | 2008-01-09 | 东南大学 | External electrode fluorescent lamp tube with high light optical effect low operating voltage and process for making same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101310362B (en) | Fluorescent lamp and backlight unit | |
| CN100583349C (en) | Field-transmitting cathode, its production and planar light source | |
| JP4499082B2 (en) | Manufacturing method of fluorescent lamp | |
| CN101714496A (en) | Flat gas excitation light source utilizing multilayer thin film type electron source | |
| TW200533236A (en) | Lighting device | |
| US7701127B2 (en) | Field emission backlight unit | |
| CN2819465Y (en) | External electrode fluorescent light coated by transmissive film on inner wall | |
| CN100446172C (en) | Flat plate type external extrode fluorescence lamp and its producing method | |
| CN1688013A (en) | External electrode fluorescent lamp with transmitting film coated internal wall | |
| CN100361270C (en) | External electrode fluorescent lamp tube with high light optical effect low operating voltage and process for making same | |
| CN1489169A (en) | Mercury-containing gas discharge tube and suction device thereof | |
| CN100461332C (en) | High photosynthetic efficiency external electrode porcelain tube cathode fluorescent lamp and its making method | |
| US8568185B2 (en) | Dual external electrode fluorescent lamp and manufacturing method thereof | |
| JP3970788B2 (en) | Discharge tube | |
| KR101177387B1 (en) | Method of manufacturing dual-type external electrode fluorescent lamp | |
| CN1825530A (en) | Cathode for ceramic cold cathode fluorescent lamp | |
| CN2879420Y (en) | High optical efficiency low working voltage outer electrode fluorescent lamp | |
| CN100442431C (en) | Ceramic auxiliary cathode hot cathode fluorescence lamp | |
| CN100355008C (en) | High optical efficiency low working voltage cold cathode fluorescent lamp | |
| KR100929544B1 (en) | Surface light source device comprising an aluminum electrode and a method of manufacturing the same | |
| KR101760606B1 (en) | Field emission light device and illumination having this same | |
| JP3970418B2 (en) | Discharge tube | |
| TWI258042B (en) | Fluorescent lamp and manufacturing method thereof | |
| KR100700250B1 (en) | Fabrication Method and Structure for Flat Fluorescent Lamp with the Light Reflection Layer | |
| CN100527349C (en) | Plane type field emission illumination module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |