Lighting Apparatus And Light Emitting Diode Device Thereof

A light emitting diode (LED) device, comprising:

• a first LED array having a first internal impedance and coupled to receive a first current, a first characteristic curve representing a relationship between the first internal impedance and the first current;
• and
• a second LED array and an impedance-providing component coupled in series, the serially-coupled second LED array and the impedance-providing component coupled in parallel with the first LED array and receiving a second current, the serially-coupled second LED array and the impedance-providing component having a second internal impedance, a second characteristic curve representing a relationship between the second internal impedance and the second current,
• wherein the first characteristic curve and the second characteristic curve match one another.

A light emitting diode (LED) device, comprising:

• a first LED array having a first internal impedance and coupled to receive a first current, a first characteristic curve representing a relationship between the first internal impedance and the first current with a range of the first characteristic curve including a first incomplete conduction region and a first conduction region, wherein in the first incomplete conduction region the first internal impedance decreases exponentially as the first current increases, and wherein the first internal impedance is approximately linear in the first conduction region;
• and
• a second adjustment module coupled to receive a second current, the second adjustment module and the first adjustment module coupled in parallel, the second adjustment module having a second internal impedance, a second characteristic curve representing a relationship between the second internal impedance and the second current with a range of the second characteristic curve including a second incomplete conduction region and a second conduction region, wherein in the second incomplete conduction region the second internal impedance decreases exponentially as the second current increases, and wherein the second internal impedance is approximately linear in the second conduction region,
• wherein the first characteristic curve and the second characteristic curve match one another.