Patent ID: 9489898
Filing Date: 2016-11-08
CPC Classification: G09G,H05B,Y02B

Claim Text:
1. An LED boost converter, comprising: an inductive boost circuit used in different display modes for boosting an input voltage to a working voltage necessary for the operation of an LED in a current display mode; a detecting circuit, connected to the inductive boost circuit and used in different display modes for selecting different detecting resistors for the different display modes so as to provide different detecting currents in the inductive boost circuit; and a controller used for providing a pulse width modulation signal so as to drive the inductive boost circuit, and for detecting whether a detecting voltage corresponding to the detecting current exceeds a reference voltage, the controller including a GATE end connected to the inductive boost circuit and a current detection input end connected to the detecting circuit; and wherein the display modes comprise a 2D display mode and a 3D display mode, and wherein when an inductive peak current I a first resistor, with one end thereof connected to a ground, and the other end thereof connected to a source of a switching transistor of the inductive boost circuit; a second resistor, with one end thereof connected to the source of the switching transistor together with the first resistor; and a first switching transistor, with a grid thereof connected to a 2D/3D switching signal input end, a drain thereof connected to the other end of the second resistor, and a source thereof connected to the ground.