Display Interface Circuit Leakage Prevention

The patent divides the single diode into two separate transistors with body diodes connected in series. Each transistor's body diode blocks current in one direction, and together they provide bidirectional blocking capability. This segmentation allows the system to achieve the same leakage prevention function while eliminating the voltage drop issue of a single diode, since the transistors can be controlled to have minimal voltage drop when conducting.

The patent transforms the static diode into dynamic transistors that can be controlled through gate signals. The transistors can be turned on or off based on power state detection, allowing the system to adaptively control current flow. This dynamic control enables the transistors to operate in optimal states, minimizing voltage drop when current needs to pass while providing blocking capability when needed.

The patent implements preliminary protection by using transistors that can be proactively controlled based on power state detection. When a short circuit condition is detected or anticipated, the control circuit can turn off the transistors before excessive current damages them. This preliminary action prevents the diode damage issue seen in conventional designs, as the transistors can be dynamically protected through gate control.

The patent changes the electrical parameters of the protection elements from fixed (diode) to controllable (transistor). By controlling the gate voltage of the transistors, the system can dynamically adjust the on-resistance and current carrying capacity. This parameter control allows the transistors to withstand short circuit conditions better than fixed diodes, as they can be turned off or operated in safe zones through gate signal control.