CN100446172C - Flat plate type external extrode fluorescence lamp and its producing method - Google Patents
Flat plate type external extrode fluorescence lamp and its producing method Download PDFInfo
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- CN100446172C CN100446172C CNB2006100389655A CN200610038965A CN100446172C CN 100446172 C CN100446172 C CN 100446172C CN B2006100389655 A CNB2006100389655 A CN B2006100389655A CN 200610038965 A CN200610038965 A CN 200610038965A CN 100446172 C CN100446172 C CN 100446172C
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Abstract
The present invention relates to a flat plate type outer electrode fluorescence lamp and a method for making the fluorescence lamp, which is a device used for illumination and backlight sources of a liquid crystal television and the method for making the fluorescence lamp. The fluorescent lamp is composed of a discharge flat plate sealed by two sheets of flat plate glass (2) and outer electrodes made at both ends of the discharge flat plate. The present invention is characterized in that a fluorescent powder layer (1) is made at the inner side of one sheet of the flat plate glass; the other sheet of the flat plate glass is connected with an exhaust pipe (7), and separant (5) is arranged between the two sheets of the flat plate glass; glass seal media (6) are arranged at the periphery of a glass plate, so that the two sheets of the flat plate glass are sealed together to form the discharge flat plate; the discharge flat plate is charged with neon, or argon, or inert gas of xenon, or mixed gas of the neon, the argon and the inert gas of the xenon, and mercury vapor to jointly form discharge gas (3); outer electrodes (4) are arranged outside both ends of the discharge flat plate. By adopting the structure, the volume of the light sources of application occasions, such as liquid crystal backlight sources, etc., can be reduced, and simultaneously, the uniformity of the light sources can be improved.
Description
Technical field
The present invention relates to a kind of plate external-electrode fluorescent lamp and preparation method thereof, can be applied to throw light on and the backlight of LCD TV.
Background technology
Cold-cathode fluorescence lamp is a kind of new type light source that does not need cathode filament heats, caliber can be done very thin (generally below 10mm, as 1.8mm), and cold-cathode fluorescence lamp has two classes, promptly interior electrode fluorescence lamp (CCFL) and external-electrode fluorescent lamp (EEFL).The needed electronics of gas discharge, ion are made of the Secondary Emission of electromerism and electrode in the cold-cathode fluorescence lamp, and these are different by the gas discharge of the thermionic emission formation of hot cathode with hot-cathode fluorescent lamp (HCFL).Interior electrode fluorescence lamp is owing to the luminous efficiency height, and external diameter is especially little, does not need heating simultaneously, and the life-span is long, has therefore obtained extensive use in the especially little place of light source volume requirement, as LCD backlight source, household electrical appliance (refrigerator) illumination etc.But interior electrode fluorescence lamp also has the some shortcomings part, and higher (150～500v), luminous efficiency is lower by about 30% than hot-cathode fluorescent lamp as discharge voltage.In recent years, development along with LCD and LCD TV, internally the demand of electrode fluorescence lamp is increasing. the large scale liquid crystal TV, as 34 inches LCD TV, owing to require the brightness height, reach the luminance level of present picture tube TV, every television set needs about 100 fluorescent tube just can meet the demands.Therefore to have be on backlight to the cost of LCD TV greatly.Reduce the cost of liquid crystal backlight, just need to improve the luminous efficiency of cold-cathode fluorescence lamp, reduce the fluorescent tube use amount or reduce the cost of every fluorescent tube.Because every fluorescent tube need be equipped with inverter power supply and keep the fluorescent tube operate as normal, and the cost of inverter power supply and its operating voltage have much relations, therefore reduce the cost that lamp works voltage can effectively reduce inverter.External-electrode fluorescent lamp is the fluorescent lamp of a kind of electrode outside fluorescent tube, and fluorescent tube inside does not have electrode.Because the outside of electrode lamp tube ends, external-electrode fluorescent lamp has higher brightness and longer life-span with respect to interior electrode fluorescence lamp, can adopt the shared inverter of many fluorescent tubes (as 20 fluorescent tubes) simultaneously, reduces the cost of backlight.
Existing external-electrode fluorescent lamp (EEFL), it has bigger diameter, and the gas discharge required voltage is also than higher, be applied in occasions such as LCD TV backlight source, volume is not enough little, and the bad uniformity of light source that also can cause of the arrangement of fluorescent tube is bad, and therefore being still waiting further, exploitation improves.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of flat plate type external extrode fluorescence lamp and preparation method thereof, adopt this structure can reduce light source volume, can also improve the uniformity of light source simultaneously in application scenarios such as liquid crystal backlights.
Technical scheme: flat plate type external extrode utmost point fluorescent lamp of the present invention is formed with the external electrode that is produced on its two ends by two discharges that plate glass sealed are dull and stereotyped, the one flat plate glass inner side is manufactured with phosphor powder layer therein, be connected with blast pipe at another piece plate glass, place separaant between two blocks of glass, there have the glass capsulation medium to make two glass sealings form discharge around glass plate to be dull and stereotyped together, be filled with neon in the discharge flat board, or argon, or the inert gas of xenon or their mist, and mercuryvapour forms discharge gas jointly, is provided with external electrode in the outside at the dull and stereotyped two ends of discharge.
Zone between two external electrodes of the plate glass outer surface that does not have phosphor powder layer makes the reflective membrane that improves luminous efficiency, ultraviolet ray and visible light is reflexed to improve luminous efficiency on the phosphor powder layer.The electrode pair discharge of answering outside is dull and stereotyped inner, is provided with the film or the pottery of the magnesium oxide that reduces dull and stereotyped external-electrode fluorescent lamp operating voltage, aluminium oxide, magnesium aluminate.External electrode is substituted with plain conductor, be arranged on the inside of described pottery, and be drawn out to outside the plate glass; Or making conductive layer and be drawn out to outside the plate glass at pottery away from a side of discharge space.In order to make the dull and stereotyped two sides of discharge all luminous, on the inboard of two blocks of plate glass, all be manufactured with phosphor powder layer.Blast pipe is made in the dull and stereotyped side of discharge.Separaant is to be made by vacuum medium or metal, is shaped as strip or column or spherical or graininess.
The manufacture method of flat plate type external extrode fluorescence lamp of the present invention is:
A. select two plate glass for use, go up the making phosphor powder layer for one therein, perforate on another piece is toasted sealing-in or the bonding method connection glass exhaust tube of medium at position of opening by vacuum burn-back or glass dust;
B. will place separaant between two blocks of plate glass, and make the one side that phosphor powder layer is arranged in the plate glass staggered relatively with the plate glass that does not have phosphor powder layer,
C. be coated with the glass capsulation medium around two blocks of plate glass, sintering makes two glass sealings together,
D. by blast pipe be connected to vacuum pumping system to the space between two blocks of plate glass toast, exhaust; Exhaust finishes the back by charging into the inert gas of neon or argon or xenon or their mist in the space of blast pipe between two blocks of plate glass, and injects mercuryvapour and form discharge gas jointly,
E. the blast pipe sealing-in is cut from gas extraction system, it is dull and stereotyped to become discharge,
F. in the outside at the dull and stereotyped two ends of discharge, adopt the method for coating, printing, plated film to make external electrode, become dull and stereotyped external-electrode fluorescent lamp.
The glass capsulation medium is by glass dust or add the glass dust acting in conjunction by glass and constitute.Zone between two external electrodes of the plate glass outer surface that does not have phosphor powder layer makes reflective membrane, directly is produced on glass or is produced on glass by the method for pasting reflective membrane by the metal vacuum plated film.
Beneficial effect: compared with prior art, the present invention has following advantage:
Basic thought of the present invention is to carry out planarization process at existing external-electrode fluorescent lamp, the discharge space of isolating relatively at conventional external-electrode fluorescent lamp is linked together, because discharge space is communicated with, and can make igniting easier, just can satisfy the needs of discharge with a rectifier.Planarization process has reduced the fluorescent tube occupation space simultaneously, has improved luminous uniformity.Adopt reflective coating, improved luminous efficiency.
Description of drawings
Fig. 1 is common external-electrode fluorescent lamp structural representation.
Fig. 2 is the structural section schematic diagram of external-electrode fluorescent lamp of the present invention.
Fig. 3 is the structural plan schematic diagram of external-electrode fluorescent lamp of the present invention.
Fig. 4 is the external-electrode fluorescent lamp structural representation that has reflective membrane.
Fig. 5 is the external-electrode fluorescent lamp structural representation of lighting at two sides.
Fig. 6 is the external-electrode fluorescent lamp structural representation that is placed with pottery in the discharge flat board.
Fig. 7 is the external-electrode fluorescent lamp structural representation of the dull and stereotyped blast pipe of discharge in the side.
Fig. 8 is placed with in the discharge flat board external-electrode fluorescent lamp of contact conductor structural representation is arranged in pottery and the pottery.
Fig. 9 is that discharge is placed with the external-electrode fluorescent lamp structural representation that there is conductive layer in pottery and the pottery outside in the flat board.
Phosphor powder layer 1, plate glass 2, discharge gas 3, external electrode 4, separaant 5, glass capsulation medium 6, blast pipe 7, reflective membrane 8, pottery 9 are arranged among the above figure.
Embodiment
Select two plate glass for use, go up the making phosphor powder layer for one therein, on another piece, punch, connect glass exhaust tube at position of opening.To place separaant between two blocks of glass, and make fluorescent material one side being arranged and do not have the glassy phase of fluorescent material right of glass of fluorescent material, around glass plate, be coated with the glass capsulation medium, make two glass sealings together as sintering behind the glass powder with low melting point.By blast pipe be connected to vacuum pumping system to the space between two glass plates toast, exhaust; Exhaust finishes the back by charging into neon or inert gas or their mists such as argon or xenon in the space of blast pipe between glass plate, and can inject mercuryvapour and form discharge gas jointly, the blast pipe sealing-in is cut from gas extraction system, and it is dull and stereotyped to become discharge, and fluorescent material is dull and stereotyped inner in discharge.Outside at the dull and stereotyped two ends of discharge adopts the method for coating, printing, plated film to make conductive electrode, becomes dull and stereotyped external-electrode fluorescent lamp.On the external electrode of external-electrode fluorescent lamp, apply alternating voltage, discharge gas is discharged, the ultraviolet ray excited light-emitting phosphor of discharge generation.
In order to improve the luminous efficiency of dull and stereotyped external-electrode fluorescent lamp, can make reflective membrane in the outer surface of the glass plate that does not have fluorescent material, zone between two external electrodes, ultraviolet ray and visible light are reflexed to improve luminous efficiency on the fluorescent material.Do not electrically contact between reflective membrane and the external electrode.
In order to reduce operating voltage, the electrode pair discharge of answering outside is dull and stereotyped inner, makes the film of magnesium oxide, aluminium oxide, magnesium aluminate or places the pottery made from these materials, utilizes the high secondary electron yield of these materials, the reduction operating voltage.
In order to make the dull and stereotyped two sides of discharge all luminous, can on glassly all make phosphor powder layer at two, and make phosphor powder layer relative, it is dull and stereotyped inner to be in discharge.
Be the influence of the blast pipe that reduces sealed-off, blast pipe can be made in the dull and stereotyped side of discharge thickness.
Claims (7)
1. flat plate type external extrode fluorescence lamp, form by two plate glass (2) discharge flat board that is sealed and the external electrode that is produced on its two ends, it is characterized in that: the one flat plate glass inner side is manufactured with phosphor powder layer (1) therein, be connected with blast pipe (7) at another piece plate glass, place separaant (5) between two blocks of glass, there have glass capsulation medium (6) to make two glass sealings form discharge around glass plate to be dull and stereotyped together, be filled with neon in the discharge flat board, or argon, or the inert gas of xenon or their mist, and mercuryvapour forms discharge gas (3) jointly, in the outside at the dull and stereotyped two ends of discharge external electrode (4) arranged; Zone between two external electrodes (4) of the plate glass that does not have phosphor powder layer (1) (2) outer surface makes the reflective membrane (8) that improves luminous efficiency, and ultraviolet ray and visible light are reflexed to upward raising luminous efficiency of phosphor powder layer (1); Dull and stereotyped inner in the corresponding discharge of external electrode (4), be provided with the film or the pottery (9) of the magnesium oxide that reduces dull and stereotyped external-electrode fluorescent lamp operating voltage, aluminium oxide, magnesium aluminate.
2. flat plate type external extrode fluorescence lamp according to claim 1 is characterized in that external electrode (4) is substituted with plain conductor, is arranged on the inside of described pottery (9), and is drawn out to outside the plate glass (2); Or making conductive layer and be drawn out to outside the plate glass (2) at pottery (9) away from a side of discharge space.
3. flat plate type external extrode fluorescence lamp according to claim 1 is characterized in that all being manufactured with phosphor powder layer (1) in order to make the dull and stereotyped two sides of discharge all luminous on the inboard of two blocks of plate glass (2).
4. flat plate type external extrode fluorescence lamp according to claim 1 is characterized in that blast pipe (7) is produced on the dull and stereotyped side of discharge.
5. flat plate type external extrode fluorescence lamp according to claim 1 is characterized in that separaant (5), is to be made of metal, and is shaped as strip or column or spherical or graininess.
6. the manufacture method of a flat plate type external extrode fluorescence lamp as claimed in claim 1 is characterized in that the method for making is:
A. select two plate glass (2) for use, go up making phosphor powder layer (1) for one therein, perforate on another piece is toasted sealing-in or the bonding method connection glass exhaust tube (7) of medium at position of opening by vacuum burn-back or glass dust;
B. in the corresponding plate glass inner surface area of external electrode (4), make the film of magnesium oxide, aluminium oxide, magnesium aluminate or place the ceramic bar of magnesium oxide, aluminium oxide, magnesium aluminate in this zone.
C. will place separaant (5) between two blocks of plate glass (2), and make one side that phosphor powder layer (1) is arranged in the plate glass (2) and the plate glass that does not have phosphor powder layer (2) staggered relatively,
D. be coated with the glass capsulation medium all around at two blocks of plate glass (2), sintering makes two glass sealings together,
E by blast pipe be connected to vacuum pumping system to the space between two blocks of plate glass (2) toast, exhaust; Exhaust finishes the back by charging into the inert gas of neon or argon or xenon or their mist in the space of blast pipe (7) between two blocks of plate glass (2), and the injection mercuryvapour forms discharge gas (3) jointly,
F. blast pipe (7) sealing-in is cut from gas extraction system, it is dull and stereotyped to become discharge;
G. in the outside at the dull and stereotyped two ends of discharge, adopt the method for coating, printing, plated film to make external electrode (4), become dull and stereotyped external-electrode fluorescent lamp;
H. the zone between two external electrodes (4) of the plate glass that does not have phosphor powder layer (1) (2) outer surface adopts the method for metal vacuum plated film or subsides reflective membrane to make reflective membrane (8).
7. the manufacture method of flat plate type external extrode fluorescence lamp according to claim 6 is characterized in that glass capsulation medium (6) is by glass dust or add the glass dust acting in conjunction by glass and constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100389655A CN100446172C (en) | 2006-03-21 | 2006-03-21 | Flat plate type external extrode fluorescence lamp and its producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100389655A CN100446172C (en) | 2006-03-21 | 2006-03-21 | Flat plate type external extrode fluorescence lamp and its producing method |
Publications (2)
| Publication Number | Publication Date |
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| CN1822313A CN1822313A (en) | 2006-08-23 |
| CN100446172C true CN100446172C (en) | 2008-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100389655A Expired - Fee Related CN100446172C (en) | 2006-03-21 | 2006-03-21 | Flat plate type external extrode fluorescence lamp and its producing method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646560A (en) * | 2012-04-19 | 2012-08-22 | 福建永德吉灯业股份有限公司 | Manufacturing method of flat-panel fluorescent lamp |
| CN102683139A (en) * | 2012-05-15 | 2012-09-19 | 福建永德吉灯业股份有限公司 | Method for manufacturing flat-plate fluorescent lamp |
| CN102945780A (en) * | 2012-10-29 | 2013-02-27 | 福建永德吉灯业股份有限公司 | Method for filling discharge medium into gas discharge lamp, manufacture method of external electrode flat fluorescent lamp, and product manufactured according to methods |
| CN105737018B (en) * | 2016-03-01 | 2018-08-17 | 陈永民 | A kind of eye-protecting type flat-plate light source desk lamp |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2107064U (en) * | 1990-07-21 | 1992-06-10 | 三星电管株式会社 | Flat-type cold cathode fluorescent lamp |
| CN2249450Y (en) * | 1995-08-01 | 1997-03-12 | 北京市古潮白实业公司 | Flat-plate cold-cathode surface light-source for fluorescent lamp |
| CN1643643A (en) * | 2002-04-03 | 2005-07-20 | 李桂承 | Flat type fluorescent lamp |
| CN1702823A (en) * | 2005-06-17 | 2005-11-30 | 东南大学 | External electrode fluorescent lamp tube with high light optical effect low operating voltage and process for making same |
| CN1710691A (en) * | 2005-07-08 | 2005-12-21 | 东南大学 | High-light-efficiency low-working-voltage gas discharging lamp-tube and mfg technology thereof |
-
2006
- 2006-03-21 CN CNB2006100389655A patent/CN100446172C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2107064U (en) * | 1990-07-21 | 1992-06-10 | 三星电管株式会社 | Flat-type cold cathode fluorescent lamp |
| CN2249450Y (en) * | 1995-08-01 | 1997-03-12 | 北京市古潮白实业公司 | Flat-plate cold-cathode surface light-source for fluorescent lamp |
| CN1643643A (en) * | 2002-04-03 | 2005-07-20 | 李桂承 | Flat type fluorescent lamp |
| CN1702823A (en) * | 2005-06-17 | 2005-11-30 | 东南大学 | External electrode fluorescent lamp tube with high light optical effect low operating voltage and process for making same |
| CN1710691A (en) * | 2005-07-08 | 2005-12-21 | 东南大学 | High-light-efficiency low-working-voltage gas discharging lamp-tube and mfg technology thereof |
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| CN1822313A (en) | 2006-08-23 |
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Granted publication date: 20081224 Termination date: 20120321 |