TWI221054B - Driving apparatus of two-segment fluorescent light - Google Patents

Abstract

The driving apparatus of two-segment fluorescent light includes two-segment driving voltage generator and inverter. Two-segment driving voltage generator can generate the driving voltage with two different levels. After the driving voltage is fed back into the inverter, the start voltage and the operation voltage required for the fluorescent light can be generated respectively. In the operation, single pulse can be fed back into the voltage level converter; and the corresponding high-level and low-level driving voltage outputs can be generated before and after the single pulse disappeared. In addition, single pulse can be fed back into the resistance converter where the resistance converter performs conversion depending on if the single pulse exists or not so as to make DC-DC regulator generate the corresponding driving voltage.

Description

1221054

File: TW0233F.doc A7 B7

SUNDIAL CONFIDElSmAL V. INTRODUCTION TO THE INVENTION [Field of the Invention] The present invention relates to a two-stage driving device, and particularly to a fluorescent lamp driving device for a liquid crystal display. [Background of the Invention] With the advancement of technology and technology The development of display technology is changing with each passing day. Take the display as an example. The traditional cathode ray tube (Cathode Ray Tube, hereinafter referred to as CRT) display is huge and radiant. In recent years, it has gradually faded out of high-end displays. The market has replaced it with a low-emission, low-power-consumption liquid crystal display (Liquid Crystal Display, LCD). Because the liquid crystal display has the above advantages, it has already become the mainstream model of the high-end market, and has become synonymous with high-end displays. In the application of notebook computers, it is an indispensable and important component. In terms of the current liquid crystal imaging technology, a stable background light source must be used to display the image in order to present an optimized image. So that the liquid day is not able to show good performance, when the background light source is selected , Often using a fluorescent lamp (flU0rescent lamp, FL) as a backlight source for development needs. Especially cold cathode fluorescent lamps (c〇ld_cath〇de fluorescent la „p, CCFL), because of its long life Because of its high efficiency, it is widely used by display manufacturers. In the following, the driving devices for these fluorescent lamps will be further discussed. ^ In practical applications, when fluorescent lamps are started, a relatively high AC voltage, and when the fluorescent lamp is turned on, the required operating voltage is much lower than the starting voltage. For example, a 15-leaf liquid crystal display has a fluorescent lamp with a starting voltage of about 1200V and a maintenance voltage of about 1200V. Exchange 600 volts, the difference between them (please read the notes on the back before filling this page) --- Order + ------ Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs V. Invention Description (1) The difference is not too small. In practice, a DC voltage of about 12V is usually used as the power source of the 15-inch liquid crystal display, and the appropriate starting voltage and operating voltage for driving the fluorescent lamp are obtained through appropriate voltage conversion. Please refer to Figure 1, which shows a schematic diagram of the driving device of a traditional fluorescent lamp. As mentioned above, the required starting voltage of a fluorescent lamp is about 12,000 VAC, but the direct voltage as a power source is only about 12 V. When driving fluorescent lamps, it is bound to require an electrical conversion device to convert DC12V to AC 1200V. In this way, fluorescent lamps are being lifted. In actual applications, the inverter (") is often used as a voltage converter. The types of inverters and inverters are different. In Figure 1, the Roy type inverter is used as an example to illustrate. Using this figure as an example, the DC power supply Vcc feeds After entering the inverter 120, the voltage conversion function of the inverter 120 can be used to generate a voltage output of i200V to provide the required starting voltage and operating voltage of the fluorescent lamp 130. As is known to all, the impedance of capacitor C can be regarded as 0 at the moment of conducting. Using this transient phenomenon, the 1200v voltage output by inverter 120 can be completely fed into fluorescent lamp 130, so that fluorescent lamp 13 is activated. . When the capacitor c reaches a steady state, with a proper design, the partial voltage drop across the fluorescent lamp 130 can be reduced to 600v to maintain its operation requirements. · Please refer to Figure 2 for the voltage and current curve of the fluorescent lamp. As shown in the figure, the fluorescent lamp 130 needs a starting voltage of 120 volts to start up. After the fluorescent lamp 130 is started up, its operating voltage is about 600 volts. As mentioned above, the traditional method is to use the transient phenomenon when the capacitor is turned on to feed the 120 watts into the fluorescent lamp to start it. After the capacitor reaches a steady state, use the capacitive reactance and the partial voltage of the fluorescent lamp to make The voltage drop across the fluorescent lamp was reduced to 600V to maintain its operation 1221054

File: TW0233F.doc

SUNDIAL CONFIDENTIAL Fifth, the invention description (3). However, it should be noted that no matter how the voltage drop across the fluorescent lamp 130 changes, the voltage output by the inverter 120 is always a high voltage of 1200V. Even if the fluorescent lamp 130 has been started, the inverter 120 is used. However, the output voltage of the LED does not change as the voltage demand of the fluorescent lamp 130 decreases. In other words, in most cases, fluorescent lamps are in the operating state, and the voltage requirement is only 600V. Only at the moment of startup, a startup voltage of 1200V is required. However, in this way, the inverter 120 is always providing a high voltage of 1200V at all times, in addition to causing waste of energy and interrogation of heat dissipation ’, it jeopardizes personal safety. In addition, the strict control of power consumption by notebook computers has reached the point where baht must be compared. Therefore, the high-power fluorescent lamp driving device is undoubtedly the number one killer that stifles its competitiveness. Therefore, it can be known from the foregoing description that the conventional fluorescent lamp driving device has at least the following disadvantages: 1. The output voltage of the inverter is always maintained at a high voltage level, which endangers human safety. Second, the high-voltage output of the inverter used increases the power consumption and the temperature, which greatly reduces the industrial competitiveness of the product. 3. As the inverter must maintain high voltage output, the insulation requirements for the transformer wires are very high, which increases the production cost. [Objective and Summary of the Invention] In view of this, the purpose of the present invention is to provide a kind of two-stage camping lamp driving device, which provides the required high voltage only when the fluorescent lamp is started, and then operates at low voltage to ensure personal safety. . Another object of the present invention is to provide a two-stage fluorescent lamp driver with a single insert. 1221054

FilerTW0233F.doc

SUNDIAL CONFIDENTIAL

------ i_vr equipment ------- factory order_ |. 丨 (Please read the precautions on the back before filling in this page) nnnn Power device can greatly reduce the power consumption to improve the product Industrial competitiveness. In addition, the purpose of the present invention is to provide a two-stage fluorescent lamp repelling device to reduce the insulation requirements for the double-voltage wire and reduce the manufacturing cost. According to the above-mentioned object of the invention, the present invention proposes a two-stage fluorescent lamp driving device. The brief description of the device is as follows .... The two-stage fluorescent lamp driving device may include a two-stage driving voltage generator and a reverse amplifier. After the current source is fed in, the two-stage drive voltage is generated to generate the drive voltage. This drive voltage has two different levels of drive voltage to meet the different voltage requirements of the fluorescent lamp during startup and operation. With proper design, after the high drive voltage level of the drive voltage is fed into the inverter, the inverter can generate the required startup voltage for the fluorescent lamp and feed the startup voltage to the fluorescent lamp. After the lamp is turned on, it can be started; after the fluorescent lamp is started, the driving voltage is reduced to a low driving voltage level and fed into the inverter, so that the inverter uses a lower operating voltage than the starting voltage And feed in the fluorescent light to maintain the normal operation of the fluorescent light. On the other hand, the two-segment fluorescent lamp driving device may include a single-pulse generator and a voltage level converter printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. After clicking the pulse generator and the DC power supply, The click pulse can be fed into the voltage level converter, so that the voltage level converter can generate the driving voltage mentioned above. When designing, you can make the output of the high drive voltage level generated when you click the pulse to feed the voltage level converter, and after the single click pulse disappears, make the voltage level converter produce the output of the low drive voltage level. Furthermore, the two-stage fluorescent lamp driving device may also include a DC-DC regulator.

1221054

File: TW0233F.doc SUNDIAL CONFIDENTIAL

The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed joint controllers, one-click pulse generators, and impedance converters. The true current power supply is coupled to DC-DC regulators and one-click pulse generators. The impedance converter is , The flow plant DC regulator and the click pulse generator are coupled. DC power feed 1 After clicking the pulse generator, you can feed the single-click pulse to the impedance converter. By using the proper combination of the impedance converter and the DC-DC regulator, the DC-DC regulator can produce a high precision Position of the drive voltage output; after the click pulse 4 is lost, the resistance value of the impedance converter changes immediately. At this time, the DC-DC regulator can generate a low-level drive voltage output. In other words, the impedance conversion is based on the presence or absence of the click pulse to perform impedance conversion, so that the DC-DC regulator correspondingly generates the driving voltages of the above-mentioned different levels. In order to make the above-mentioned objects, features, and advantages of the present invention more comprehensible, a preferred embodiment is exemplified below, and it is described in detail below with reference to the accompanying drawings. [Brief description of the drawings] Fig. 1 shows a schematic diagram of a driving device for a conventional fluorescent lamp. Figure 2 shows the voltage-current curve of the fluorescent lamp in Figure 丨. FIG. 3A is a block diagram of a two-stage fluorescent lamp driving device according to the present invention. FIG. 3B shows the correspondence between the driving voltage VD and the lamp voltage 卯 in FIG. 3A. Figure 4 is a schematic diagram showing the structure of a two-stage driving voltage generator according to the first preferred embodiment of the present invention. FIG. 5 is a schematic structural diagram of a two-stage driving voltage generator provided according to the second preferred embodiment of the present invention. ---------- Installation ·· ------ Γ-Order, · I (Please read the notes on the back before filling in this page) n n ί $

I ------ 7 bismuth male scabies 垴 田 by ra pa 玄 垣 aa 4s ix rom x 9Q7 1221054 A7

File.TW0233F.doc SUNDIAL CONFIDENTIAL __B7__ 5. Description of the Invention (G) [Illustration of Graphical Symbols] (Please read the precautions on the back before filling out this page) 120: Inverter " 130: Fluorescent Lamp 300: Two-stage fluorescent lamp driving device 310: Two-stage driving voltage generator 312: One-click pulse generator 314: Voltage level converter 315: Amplifier 316: DC-DC regulator 317: Amplifier 318: Impedance converter Rl , R2, R3: Resistance Q · Transistor C: Capacitor OPT: Output terminal CTRL: Control terminal Vcc: DC power supply • Printed by the Consumer Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs

Vr: reference voltage,

Vp: One-click pulse

Vd: driving voltage

Vdh: High-altitude dynamic voltage level ... Vdl: Low driving voltage level VF: Lamp voltage Vfs: Start-up voltage 1221054

File: TW0233F.doc V. Description of the Invention (^)

Vfo: Operating voltage [Detailed description of the present invention] Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economics, please refer to Figure 3A. 'It shows a block diagram of a two-stage fluorescent lamp driving device provided according to the present invention. . The key point of these architectures is that the two-stage fluorescent lamp driving device 300 can sequentially feed the start-up voltage Vfs and the operating voltage Vfg required for the fluorescent lamp 130 to maintain the normal operation of the fluorescent lamp 130. As shown in the figure, the two-stage fluorescent lamp driving device 300 includes a two-stage driving voltage generator 310 and an inverter 120, and the DC power source Vcc is fed to two people. The segmented driving voltage generator 310 can generate the driving voltage VD accordingly, and feed the driving voltage ^ to the inverter 120, so that the inverter 120 generates the lamp voltage VF corresponding to the driving voltage vD to drive. Fluorescent lamp 130. It should be noted that the driving voltage Vd has two different voltage levels. The high driving voltage level Vdh in the driving voltage vD corresponds to the starting voltage vFS in the lamp voltage VF and the low driving voltage in the driving dust Vd. The level vDL corresponds to the operating voltage Vfo of the lamp voltage Vf. In other words, after the high driving voltage level VDH is fed into the inverter 120, the inverter 120 can generate the starting voltage VFS according to the high voltage level Vdh and feed the starting voltage Vfs to the fluorescent lamp. 130 causes it to start; then, after the low driving voltage level Vdl is fed into the inverter 120, the inverter 120 can generate an operating voltage w corresponding to the low voltage level Vdl. And feed the operating voltage VF0 to the fluorescent lamp 130 to provide the operating voltage required by the lamp. Please note in particular that the drive voltage Vd is a DC electric house, which has two different voltage levels; the lamp voltage Vf is an AC voltage, which is the starting voltage ^ and the operating voltage VF. Composed of. To enable the start-up voltage Vfs and the operating voltage 9 1221054

File: TW0233F.doc A7 B7

SUNDIAL CONFIDEOTIAL Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. The invention description (X) clearly corresponds. The drawing of the lamp voltage W in the diagram is used to indicate the peak value of the AC voltage, not to indicate that it is a DC voltage. Special note here. For the correspondence between the drive% voltage Vd and the lamp voltage VF, please refer to Figure 3B. FIG. 3B shows the corresponding relationship between the driving voltage Vd and the lamp voltage VF. For example, when a 12V DC power source Vcc is fed into the two-stage driving voltage generator 310, the proper design can make the two The segment driving voltage generator '310 generates a driving voltage Vd of 12V. After the 12V driving voltage is fed into the inverter 120, the inverter 120 can generate a starting voltage of 1200V correspondingly to start the fluorescent lamp 130. When the fluorescent lamp 13 is started, the driving voltage Vd is reduced to 6V, and the inverter 120 can generate an operating voltage of 600V based on this, and feed this operating voltage into the fluorescent lamp 13 to maintain its operation. Needed. The difference from the traditional method is that the present invention uses a two-stage driving voltage generator 310 to provide two different DC voltage levels, so that the inverter 120 generates two different AC voltages, which are respectively used to It is required to activate the fluorescent lamp 13 or to maintain the fluorescent lamp 130. Therefore, in addition to the fact that the inverter 120 must provide high voltage (1200V in this example) output at the moment of startup of the camping light 130, it can output low voltage (600V in this example) at other times, so it can reach the present invention. The above-mentioned purpose and its more specific implementation method will be described below, and in the following, the above-mentioned voltage setting values will also be used for easy explanation. [Preferred Embodiment 1] Referring to FIG. 4, it shows a schematic structural diagram of a two-stage driving voltage generator provided according to the preferred embodiment 1 of the present invention. As shown in the figure, the two-stage driving voltage generator 31 〇 includes the click pulse generator I -------- ^ ---- ί! Order ---- V (Please read the back first (Notes on this page, please fill out this page) 10 1221054

File: TW0233F.doc A7 B7

SUNDIAL CONFIDENTIAL 5. Description of the invention (7 (one shot pulse generator) 312 and voltage level converter 314. After the click pulse generator 312 is coupled to the DC power source vcc, the click pulse VP can be fed into the voltage level. The converter 314 turns on the transistor Q. As shown in the figure, the amplifier 315 is coupled as a non-inverting amplifier. Therefore, after the transistor Q is turned on, the resistor R3 is connected in parallel with the resistor R2, and the driving voltage Vd at this time Can be written as ... V〇1 +

Rl R2 // R3 (1) After the click pulse Vp disappears, the transistor Q is also turned off, after which the resistor is no longer connected in parallel with the resistor R2, and the driving voltage Vd can be recorded as: (Please read the precautions on the back before filling in this Page}-% ί 装. 丨 丨

VD \ R2 ⑵ Among them, the reference voltage Vr is a constant voltage, and its voltage value can be defined according to design requirements without special requirements. However, the important point is that the driving voltage Vd in the formula (1) can be up to 12V as the high driving voltage level Vdh of the driving voltage vD. In addition, the driving voltage Vd in the formula (2) can be up to 6V. As the low driving voltage level Vdl of the driving voltage Vd, in this way, the high voltage level of the driving voltage Vd can meet the design requirements. [Preferred Embodiment 2] Refer to FIG. 5, which shows the structure of a two-stage driving voltage generator provided according to the preferred embodiment. The two-stage driving voltage generation 310 includes a DC-DC regulator 31 g, a click pulse generation β 312, and an impedance converter 318. The impedance converter 318 may include a resistor R1, a resistor R2, a resistor R3, and a transistor (3, etc.) The coupling relationship between the components is shown in the figure, so I won't repeat them here. When designing the circuit, order ""-t Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 1221054

File: TW0233F.doc A7 B7

SUNDIAL CONFIDENTIAL V. Description of the Invention () In order to make the voltage provided by the DC power supply Vcc more stable, the DC-DC regulator 316 is often used to achieve the purpose of voltage stabilization to reduce the load effect. ♦ • Voltage regulation with this function There are many types of regulators, such as pulse width modulation (PWM) DC-DC regulators, which have this voltage stabilization function and can provide stable DC output. As shown in FIG. 5, the DC-DC converter 316 has an output terminal opt and a control terminal CTRL, and the magnitude of the driving voltage Vd output from the output terminal opt can be controlled by the bias circuit of the control terminal CTRL. In terms of the actual circuit architecture, the output stage of the DC-DC regulator 316 can be regarded as the amplifier 317, the output terminal of the amplifier 317 is the output terminal opt of the DC-DC regulator 316, and the output voltage of the amplifier 317 can be referenced to Vr Determined together with the bias circuit of the control terminal CTRL. Taking this figure as an example, the control terminal CTRL is connected to the impedance converter 318. After the click pulse generator 312 is coupled to the DC power source Vcc, the click pulse Vp can be fed into the impedance converter 318, so that the transistor Q is on. As can be seen from the figure, the amplifier 317 is coupled to the impedance converter 318 and combined into a non-inverting amplifier. Therefore, after the transistor Q is turned on, the resistor R3 is connected in parallel with the resistor R2, and the driving voltage Vd at this time can be recorded as ··% -pack -------- tri ------ * (Please read the precautions on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs m R2 // R3 k (3) After the click pulse Vp disappears, the transistor Q is also turned off, after which the resistor R3 is no longer connected in parallel with the resistor R2, and the driving voltage Vd can be recorded as: (4) With an appropriate design, (3) The driving voltage Vd reaches 12 V 'as the high driving voltage level Vdh of the driving voltage Vd; In addition, 12 paper standards are applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 5. Description of the invention (丨 丨) The driving voltage in the formula (4) can be reached to "as the low driving voltage level VDL of the driving voltage 1, so that the high and low voltage levels of the driving voltage Vd can meet the design requirements. Change In other words, the role of the impedance converter 318 is that its resistance value can be changed according to the presence or absence of the click pulse Vp. When the shock pulse Vp is present, the resistor R3 is connected in parallel with the resistor R2, and the voltage of the output OPT can be 12V by the function of the amplifier 317. Furthermore, after the click pulse Vp disappears, the resistor R3 is regarded as a dummy connection and the amplifier 3 The role of 丨 7 can make the output GPT voltage 6V. Therefore, it can be known that the impedance converter 318 performs impedance conversion according to the click pulse Vp, so that the DC-DC regulator 316 can be converted according to the impedance 'impedance' 318. Value, corresponding to the median electric power vD that produces different levels. Therefore, we can know that in addition to the DC-DC regulator 316 has a stable function, through this circuit architecture, it can also provide two-stage electric output, so that The driving voltage has two voltage levels, which are respectively used to start the laborer lamp and maintain the operating voltage required to maintain the fluorescent lamp. It should be noted that the design parameters used in the above embodiments are only examples of the present invention. It is not intended to limit the applicable conditions of the present invention, and anyone skilled in the art can adjust design parameters to achieve similar functions to the present invention, but still does not depart from the spirit of the present invention. [Inventive Effect] As can be seen from the above, the present invention The two-segment fluorescent lamp driving device disclosed in the embodiment has at least the following advantages. ^ The two-segment fluorescent lamp driving teaching provided by the present invention provides the required height only when the light lamp is started. Well, it operates with low willingness after startup, so it can effectively protect personal safety and avoid accidents. ^ 1054 ^ 1054 File: TW0233F.doc A7

SUNDIAL CONFIDENTIAL ------ n7 V. Description of the invention (/ L) · 1. The two-stage fluorescent lamp driving device provided by the present invention can reduce the insulation requirements of the transformer wire and reduce the production cost. It can also increase the industrial competitiveness of the product due to the drastic reduction in power consumption. 2. The two-stage fluorescent lamp driving device provided by the present invention does not need to set a capacitor at the fluorescent lamp, so it can further save materials and reduce costs. As mentioned above, although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make various changes without departing from the spirit and scope of the present invention. And retouching, so the scope of protection of the present invention shall be determined by the scope of the attached patent application. (Please read the notes on the back of B3 before filling this page)

Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 14

Claims (1)

1221054 FilerTW0233F.doc A8 B8 C8 D8 SUNDIAL CONFIDENTIAL 6. Application scope 1. A two-stage fluorescent lamp driving device for driving a fluorescent lamp. The two-stage fluorescent lamp driving device includes: > one or two The segmented driving voltage generator is coupled to a DC power source and outputs a driving voltage according to the DC power source, wherein the driving voltage has a driving voltage level and a low driving voltage level. The two-stage driving voltage The generator is used to select an output from the south driving voltage level and the low driving voltage level; and an inverter is used to connect to the two-stage driving voltage generator and the fluorescent lamp, and The fluorescent lamp is driven according to the driving voltage. 2. The two-stage fluorescent lamp driving device described in item 1 of the scope of patent application, wherein the two-stage driving voltage generator further includes: a one-click pulse generator, coupled to the DC power source, and according to the The DC power source generates a click pulse; and a voltage level converter is coupled to the click pulse generator and generates the driving voltage according to the click pulse. 3. The two-stage fluorescent lamp driving device described in item 1 of the scope of patent application, wherein the two-stage driving voltage generator further includes: a DC-DC regulator; coupled to the DC power source for output The driving voltage; a one-shot pulse generator coupled to the DC power source and generating a one-shot pulse according to the k-current power source; and an impedance converter coupled to the one-shot pulse generator and the DC direct current Regulator, in which the impedance converter is based on the one-shot pulse to perform the humility conversion, so that the DC-DC regulator is compliant with the Chinese National Standard (CNS) A4 specification (210 x 29) according to the paper size of the impedance converter / i 爱） _ --- (Please read the precautions on the back before filling out this page). Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 1221054 File: TW0233F, doc Sixth, the scope of patent application The resistance value corresponds to the driving voltage. (Please read the note on the back? Matters before filling out this page) 4. The two-stage fluorescent lamp driving device as described in item 3 of the scope of patent application, where the DC-DC regulator is a pulse width modulated DC- DC converter. 5. The two-stage fluorescent lamp driving device as described in item 1 of the scope of the patent application, wherein the inverter inverter feeds a starting voltage to the fluorescent lamp according to the high driving electroacoustic level. 6. The two-stage fluorescent lamp driving device as described in item 5 of the scope of the patent application, wherein the starting voltage is 12Ov. 7. The two-stage fluorescent lamp driving device as described in item 1 of the scope of the patent application, wherein the inverter is used to feed an operating voltage to the fluorescent lamp according to the low driving voltage level. 8. The two-stage fluorescent lamp driving device as described in item 7 of the scope of the patent application, wherein the operating voltage is 600v. 9. The two-stage fluorescent lamp driving device according to item 1 of the scope of patent application, wherein the DC power source is 12V. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 10. The two-stage fluorescent lamp driving device described in item 1 of the scope of patent application, wherein the high driving voltage level is 12V. 11. The two-stage fluorescent lamp driving device according to item 1 of the scope of the patent application, wherein the low driving voltage level is 6 V. 12 · The two-stage fluorescent lamp driving device as described in item 1 of the patent application scope, wherein the inverter is a Roy inverter. 13 · —A two-stage fluorescent lamp driving device for driving a fluorescent lamp. The two-stage fluorescent lamp driving device includes: ^ Paper size is 0 National Standard (CNS) A4 specification ⑽ X 29 centimeters) -1221054 File: TW0233F.doc A8B8C8D8 E] Sixth, the scope of patent application is one-click pulse generator, which is coupled to the DC power supply and generates one-click pulse according to the DC power supply; " a voltage level converter, Coupled to the one-click pulse generator and generating a driving voltage according to the one-click pulse, wherein the driving voltage has a two-driving voltage level and a low-driving voltage level, and the two-stage driving voltage generates a beneficial system To select an output from the driving voltage level and the low driving voltage level; and an inverter for coupling to the voltage level converter and the fluorescent lamp, and according to the driving voltage Drive the light. 14. The two-stage fluorescent lamp driving device according to item 13 of the scope of patent application, wherein the DC power supply is 12v. 15. The two-stage fluorescent lamp driving device according to item 13 of the scope of patent application, wherein the high driving voltage level is 12V. 16. The two-stage fluorescent lamp driving device according to item 13 of the scope of the patent application, wherein the low driving voltage level is 6 V. Π. The two-stage fluorescent lamp driving device as described in item 13 of the scope of patent application, wherein the inverter is used to feed a starting voltage to the fluorescent lamp according to the high driving voltage level. 18. The two-stage fluorescent lamp driving device according to item 17 of the scope of patent application, wherein the starting voltage is 1200V. 19. The two-stage fluorescent lamp driving device as described in item 13 of the scope of the patent application, wherein the inverter is used to feed an operating voltage to the fluorescent lamp according to the low driving voltage level. 20 · The paper size of the two-stage fluorescent lamp driver described in item 19 of the scope of the patent application is applicable to the Chinese National Standard (CNS) A4 specification (210 X " (Please read the precautions on the back before filling this page). Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs and printed 1221054 File: TW0233F.doc A8 B8 C8 D8 SUNDIAL CONFIDENTIAL The two-stage fluorescent lamp driving device according to item 13 of the patent application park, wherein the inverter is a Roy-type inverter. 22 · —A two-stage fluorescent lamp driving device, For driving a fluorescent lamp, the two-stage fluorescent lamp driving device includes: a DC-DC regulator coupled to a DC power source for outputting a driving voltage, wherein the driving voltage has a high driving voltage Level and a low driving voltage level; a one-shot pulse generator coupled to the DC power source and generating a one-shot pulse according to the DC power source; an impedance converter coupled to the one-click pulse A pulse generator and the DC-DC regulator, wherein the impedance converter performs impedance conversion according to the click pulse so that the DC-DC regulator generates the driving voltage corresponding to the resistance value of the impedance converter; and A reverse inverter is coupled to the DC-DC regulator and the fluorescent lamp, and drives the fluorescent lamp according to the driving voltage. 23. The two-stage fluorescent lamp according to item 22 of the scope of patent application Lamp driving device 'wherein the DC-DC regulator is a pulse-width-modulated DC-DC converter. 24. The two-stage fluorescent lamp driving device described in item 22 of the scope of patent application' 12 V. 25. The two-stage fluorescent lamp driving device as described in item 22 of the scope of patent application, wherein the high driving voltage level is 12 V. 26. The two-stage fluorescent lamp as described in item 22 of the scope of patent application The size of the paper drive is applicable to the standard of Θ mesh home standard (CNS) A4 size X 29. (Please read the precautions on the back before filling in this page) M. Install 1221054 A8 B8 C8 File: TW0233F.doc _ ^ _ SUNDIAL CONFIDENTIAL Application The power range is a dynamic device, wherein the low driving voltage level is 6V. 27. The two-stage fluorescent lamp driving device according to item 22 of the patent application park, wherein the inverter inverter feeds a starting voltage to the fluorescent lamp according to the high driving voltage level. 28. The two-stage fluorescent lamp driving device described in item 27 of the scope of patent application, wherein the starting voltage is 1200V. 29. The two-stage fluorescent lamp driving device as described in item 22 of the scope of the patent application, wherein the inverter is used to feed an operating voltage to the fluorescent lamp according to the low driving voltage level. 3 (K) The two-stage fluorescent lamp driving device described in item 29 of the scope of patent application, wherein the operating voltage is 600V. 31. The two-stage fluorescent lamp driving device described in item 22 of the scope of patent application, The inverter is a Roy-type inverter. (Please read the precautions on the back before filling out this page.) The paper printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs applies the Chinese National Standard (CNS). A4 size (210 X 29/1%)