TW200644397A - Dual-mode directly start-up driving piezoelectric converter - Google Patents
Dual-mode directly start-up driving piezoelectric converterInfo
- Publication number
- TW200644397A TW200644397A TW094119763A TW94119763A TW200644397A TW 200644397 A TW200644397 A TW 200644397A TW 094119763 A TW094119763 A TW 094119763A TW 94119763 A TW94119763 A TW 94119763A TW 200644397 A TW200644397 A TW 200644397A
- Authority
- TW
- Taiwan
- Prior art keywords
- ccfl
- driving
- dual
- directly start
- piezoelectric converter
- Prior art date
Links
Landscapes
- Dc-Dc Converters (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Inverter Devices (AREA)
Abstract
A dual-mode directly start-up driving piezoelectric converter which could be applied on lighting CCFL (Cold Cathode Fluorescent Lamp) is proposed in this invention. The dual-mode directly start-up driving piezoelectric converter proposed in this invention could be used in the backlight power module of liquid crystal display or television with liquid crystal display. The dual-mode directly start-up driving piezoelectric converter proposed in this invention drives CCFL by a fixed frequency directly. If CCFL is not lighted on by the fixed frequency, the driving frequency will be increased until the CCFL is lighted on. Then the driving circuit starts the self-exciting mode after lighting of the CCFL, which controls the driving frequency of piezoelectric transformer by the condition that the phase difference between the input voltage and output voltage of piezoelectric transformer is fixed or in a fixed range. In this way, piezoelectric transformer could work on the highest efficient point at which this invention can therefore raise the overall transformation efficiency of the piezoelectric converter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94119763A TWI293222B (en) | 2005-06-15 | 2005-06-15 | Dual-mode directly start-up driving piezoelectric converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94119763A TWI293222B (en) | 2005-06-15 | 2005-06-15 | Dual-mode directly start-up driving piezoelectric converter |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200644397A true TW200644397A (en) | 2006-12-16 |
TWI293222B TWI293222B (en) | 2008-02-01 |
Family
ID=45067769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW94119763A TWI293222B (en) | 2005-06-15 | 2005-06-15 | Dual-mode directly start-up driving piezoelectric converter |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI293222B (en) |
-
2005
- 2005-06-15 TW TW94119763A patent/TWI293222B/en active
Also Published As
Publication number | Publication date |
---|---|
TWI293222B (en) | 2008-02-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100616538B1 (en) | Single stage back-light inverter, and driving method thereof | |
US20020047619A1 (en) | Inverter for multi-tube type backlight | |
TW200607399A (en) | Phase shift modulation-based control of amplitude of ac voltage output produced by double-ended dc-ac converter circuitry for powering high voltage load such as cold cathode fluorescent lamp | |
EP1814367A4 (en) | Backlight inverter and its driving method | |
WO2003030340A3 (en) | Adaptable inverter | |
TW200504674A (en) | CCFL circuit with independent adjustment of frequency and duty cycle | |
TW200727740A (en) | An inverter | |
TW200802231A (en) | High efficiency and low cost cold cathode fluorescent lamp driving apparatus for lcd backlight | |
US20090284173A1 (en) | Lamp control system | |
US8049433B2 (en) | Inverter circuit and lamp control apparatus having the same | |
US6784867B1 (en) | Voltage-fed push LLC resonant LCD backlighting inverter circuit | |
US8450947B2 (en) | Method for driving lamp of backlight control circuit | |
TW200727317A (en) | Multiple output piezoelectric transformer and inverter | |
TW200644397A (en) | Dual-mode directly start-up driving piezoelectric converter | |
US9053670B2 (en) | Liquid crystal display apparatus and LED backlight module thereof | |
US7675243B2 (en) | Two-end driven lamp controlling device | |
DE60307231D1 (en) | TRANSLUCENT LIGHTING OF LCD MONITORS AND LCD TELEVISION DEVICES | |
KR100953161B1 (en) | Power Supply And Liquid Crystal Display Device Using The Same | |
US20060061298A1 (en) | Push-pull inverter circuit | |
TWI404457B (en) | Lamp driving circuit | |
US9883572B2 (en) | Electronic device | |
US8223513B2 (en) | Inverter for a liquid crystal display device with soft start circuit to overcome power loss in transistor switching | |
TW200618673A (en) | Tube module and backlight module | |
JP3094257U (en) | Piezoelectric conversion drive | |
JP2004342485A (en) | Cold cathode tube lighting circuit |