Display Driver Power Circuit for Low-Loss Direct Voltage Delivery
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Solution Overview
Problem
Existing electronic devices face inefficiencies in power management for display driver circuitry, leading to increased power consumption due to the conversion of high voltage DC signals to lower voltage levels, which results in significant power loss.
Innovation Solution
The implementation of a power management integrated circuit (PMIC) that provides DC signals directly to display driver circuits, allowing for the measurement of input node voltage values within the display driver circuitry to adjust and deliver signals at lower voltage levels, thereby bypassing the need for additional voltage regulators and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage conversion is performed using traditional power management, then display driver circuits can operate at required voltage levels, but significant power loss occurs during the conversion process
Solution Approach 1:
The patent extracts and removes the voltage conversion stage from the power delivery path to display driver circuits. By providing power directly at the required voltage level without conversion, the system eliminates the power loss associated with traditional voltage regulation, while still ensuring reliable operation of the display driver circuits.
Solution Approach 2:
The patent changes the voltage parameter delivery approach by providing power directly at the required voltage level rather than converting from a different voltage level. This parameter change eliminates the conversion loss while maintaining the necessary operating conditions for the display driver circuits.
2Reliability
If voltage regulators are added to convert high voltage DC signals to lower voltage levels, then display driver circuits receive appropriate power, but device complexity increases
Solution Approach 1:
The patent removes voltage regulators from the power management structure by providing power directly at the required voltage level. This extraction simplifies the device architecture while maintaining reliable power delivery to the display driver circuits, as the regulators are completely eliminated rather than just repositioned.
3Reliability
If traditional power management with voltage conversion is used, then display driver circuits can be powered, but power consumption increases due to conversion losses
Solution Approach 1:
The patent extracts the voltage conversion stage from the power supply path, eliminating the energy losses that occur during conversion. By providing power directly at the required voltage level, the system reduces overall power consumption while maintaining reliable operation of the display driver circuits.
Solution Approach 2:
The patent changes the power delivery parameter by providing voltage directly at the required level without conversion. This parameter change eliminates the energy waste associated with voltage conversion processes, thereby reducing total power consumption while ensuring adequate power supply to the display driver circuits.
Data Source
AI summary
An electronic device may include a processor, and may include a display including a display panel. The electronic device may include a display driving circuit which includes at least one circuit configured to process images acquired from the processor in order to perform display on the display panel, a first pad connected to an input node of the at least one circuit, and a second pad connected to the input node; and a capacitor connected to the input node through the first pad, and may include a power management integrated circuit (PMIC) including: a third pad; a fourth pad; and a power supply circuit connected to each of the third pad and the fourth pad.