1. 2D_Vpit LED_Build a structure (material region setting) 2. 2D_Vpit LED_Mesh setting 3. 2D_Vpit LED_Set up the material parameters 4. 2D_Vpit LED_Additional functions 5. 2D_Vpit LED_Bias setting 6. 2D_Vpit LED_Run the simulation 7. 2D_Vpit LED_View the results