Parallel-connected type light-emitting diode driving device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 雅捷科技股份有限公司
- Publication Date
- 2006-05-03
- Estimated Expiration
- Not applicable · inactive patent
Smart Images
Figure 1 
Figure 2 
Figure 3
Abstract
Description
technical field
[0001] The invention relates to a light-emitting diode driving device, especially a high-efficiency parallel-connected light-emitting diode driving device. Background technique
[0002] The display function is very important in products such as personal digital assistants (PDA), mobile phones (Cell Phone), digital cameras, video recorders, etc. Most of these products use a large number of white light diodes (White LED) and red Light, green light, and blue light diodes (Color R-RED, G-Green, B-B1L1e LED), so the production of these light-emitting diodes is very important for the above-mentioned digital products.
[0003] At this stage, many products need to use different types of light-emitting diode combinations. For example, the red light diode is 1.9 volts, and the green and blue light diodes are 3.7 volts. The driving circuit is used to control whether numerous light-emitting diodes emit light or not. The existing driving circuit is to give a large volta...