TW200944052A - LED driving structure - Google Patents

LED driving structure

Info

Publication number
TW200944052A
TW200944052A TW097112451A TW97112451A TW200944052A TW 200944052 A TW200944052 A TW 200944052A TW 097112451 A TW097112451 A TW 097112451A TW 97112451 A TW97112451 A TW 97112451A TW 200944052 A TW200944052 A TW 200944052A
Authority
TW
Taiwan
Prior art keywords
piezoelectric
driving
diode groups
leds
piezoelectric conversion
Prior art date
Application number
TW097112451A
Other languages
Chinese (zh)
Other versions
TWI387395B (en
Inventor
ying-zhang Zheng
shi-hong Liu
Original Assignee
Zippy Tech Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zippy Tech Corp filed Critical Zippy Tech Corp
Priority to TW097112451A priority Critical patent/TWI387395B/en
Publication of TW200944052A publication Critical patent/TW200944052A/en
Application granted granted Critical
Publication of TWI387395B publication Critical patent/TWI387395B/en

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Landscapes

  • Dc-Dc Converters (AREA)
  • Led Devices (AREA)

Abstract

The present invention discloses an LED driving structure, which obtains an input power and converts the same into a driving power to drive a plurality of LEDs. The driving structure comprises: a plurality of diode groups connected in parallel, a first piezoelectric conversion unit and a second piezoelectric conversion unit respectively connected with the two sides of the diode groups. The first and second piezoelectric conversion units receive the input power and convert the input power into driving powers in opposite time sequence for driving the diode groups. Among the plurality of diode groups, at least one diode group is formed of a plurality of LEDs. Each of the first and second piezoelectric conversion units has a piezoelectric inverter, which can easily achieve an impedance matching and a constant-current power and use the constant-current power to drive LEDs via a piezoelectric effect. In addition, the present invention also has the efficacy of saving cost.
TW097112451A 2008-04-07 2008-04-07 Light emitting diode drive architecture TWI387395B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW097112451A TWI387395B (en) 2008-04-07 2008-04-07 Light emitting diode drive architecture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW097112451A TWI387395B (en) 2008-04-07 2008-04-07 Light emitting diode drive architecture

Publications (2)

Publication Number Publication Date
TW200944052A true TW200944052A (en) 2009-10-16
TWI387395B TWI387395B (en) 2013-02-21

Family

ID=44869160

Family Applications (1)

Application Number Title Priority Date Filing Date
TW097112451A TWI387395B (en) 2008-04-07 2008-04-07 Light emitting diode drive architecture

Country Status (1)

Country Link
TW (1) TWI387395B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI384171B (en) * 2010-01-05 2013-02-01 Richtek Technology Corp Thermal foldback control for a light-emitting diode

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI281277B (en) * 2001-11-29 2007-05-11 Matsushita Electric Ind Co Ltd Driving circuit of piezoelectric transformer, cold cathode tube light-emitting device, liquid crystal panel and electronic machine mounted with liquid crystal panel
US7012578B2 (en) * 2002-06-21 2006-03-14 Matsushita Electric Industrial Co., Ltd. Light emission control device, backlight device, liquid crystal display apparatus, liquid crystal monitor and liquid crystal television
TWI302073B (en) * 2006-01-09 2008-10-11 Au Optronics Corp Piezoelectric transformer driving circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI384171B (en) * 2010-01-05 2013-02-01 Richtek Technology Corp Thermal foldback control for a light-emitting diode

Also Published As

Publication number Publication date
TWI387395B (en) 2013-02-21

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees