TW200706064A - Dimming control circuit for light-emitting diodes - Google Patents
Dimming control circuit for light-emitting diodesInfo
- Publication number
- TW200706064A TW200706064A TW094124313A TW94124313A TW200706064A TW 200706064 A TW200706064 A TW 200706064A TW 094124313 A TW094124313 A TW 094124313A TW 94124313 A TW94124313 A TW 94124313A TW 200706064 A TW200706064 A TW 200706064A
- Authority
- TW
- Taiwan
- Prior art keywords
- dimming control
- light
- control circuit
- emitting diodes
- bright
- Prior art date
Links
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
A dimming control circuit generates a dimming control signal for determining brightness of at least one light-emitting diode. The dimming control signal has a plurality of bright-dark cycles, each of which consists of a bright phase and a dark phase. The bright phase starts with an adaptive rising portion. The adaptive rising portion restricts the brightness of the at least one light-emitting diode to increase gradually from zero.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94124313A TWI259030B (en) | 2005-07-19 | 2005-07-19 | Dimming control circuit for light-emitting diodes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW94124313A TWI259030B (en) | 2005-07-19 | 2005-07-19 | Dimming control circuit for light-emitting diodes |
Publications (2)
Publication Number | Publication Date |
---|---|
TWI259030B TWI259030B (en) | 2006-07-21 |
TW200706064A true TW200706064A (en) | 2007-02-01 |
Family
ID=37765466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW94124313A TWI259030B (en) | 2005-07-19 | 2005-07-19 | Dimming control circuit for light-emitting diodes |
Country Status (1)
Country | Link |
---|---|
TW (1) | TWI259030B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI452925B (en) * | 2011-06-30 | 2014-09-11 | Hannstar Display Corp | Control circuit and dimming method of light emitting diode |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7504783B2 (en) * | 2007-03-23 | 2009-03-17 | National Semiconductor Corporation | Circuit for driving and monitoring an LED |
TWI406589B (en) * | 2008-10-28 | 2013-08-21 | Ind Tech Res Inst | Control circuit and method for backlight sources, and image display apparatus and lighting apparatus using the same |
TWI411357B (en) * | 2008-12-19 | 2013-10-01 | Himax Analogic Inc | Led circuit with high dimming frequency |
TWI425878B (en) * | 2009-05-08 | 2014-02-01 | My Semi Inc | Driving circuit of light emitting diode |
TWI418252B (en) * | 2009-08-17 | 2013-12-01 | Novatek Microelectronics Corp | Control method capable of avoiding flicker effect and light emitting device |
US8269432B2 (en) * | 2009-09-14 | 2012-09-18 | System General Corporation | Offline LED lighting circuit with dimming control |
TWI413454B (en) * | 2010-05-26 | 2013-10-21 | Au Optronics Corp | Dc to dc converting system |
-
2005
- 2005-07-19 TW TW94124313A patent/TWI259030B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI452925B (en) * | 2011-06-30 | 2014-09-11 | Hannstar Display Corp | Control circuit and dimming method of light emitting diode |
Also Published As
Publication number | Publication date |
---|---|
TWI259030B (en) | 2006-07-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TW200706064A (en) | Dimming control circuit for light-emitting diodes | |
TW200731861A (en) | A color lighting device | |
TW200711189A (en) | A light source | |
TW200746890A (en) | Lighting system | |
TW200642877A (en) | Kfz-scheinwerfer | |
TW201130107A (en) | White light electroluminescent devices with adjustable color temperature | |
TW200737552A (en) | Shifting spectral content in solid state light emitters by spatially separating lumiphor films | |
TW200709126A (en) | Two-terminal LED device with tunable color | |
EP3657558A3 (en) | Solid state lighting component | |
MX2009002210A (en) | Variable load circuits for use with lighting control devices. | |
TW200738999A (en) | Lighting device | |
WO2011049703A3 (en) | Solid state lighting, driver circuits, and related software | |
TW200619553A (en) | Illumination device, motor-vehicle headlight and method for the production of an illumination device | |
WO2010022104A3 (en) | Organic light emitting diode lighting systems | |
WO2006124558A3 (en) | Status indicator circuit for a dimmer switch | |
RU2011142899A (en) | LAMP COMBINING GENERAL LIGHTING AND DIRECTED LIGHTING | |
HK1073964A1 (en) | Circuit assembly for operating a luminous signal | |
TW200729136A (en) | Illumination device | |
TW200742484A (en) | Colour point control system | |
MX2008015439A (en) | Adjustable reflector luminaire. | |
TW200507292A (en) | A light-emitting semiconductor device | |
WO2013074913A3 (en) | Led anti-flicker circuitry | |
EP2348244A3 (en) | Light-emitting unit and illumination fixture using the same | |
DE50212793D1 (en) | REFRIGERATOR WITH INTERIOR LIGHTING | |
WO2008044171A3 (en) | Led based luminaire and lighting device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |