Source Driving IC Power Supply Voltage Adjustment
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Solution Overview
Problem
The existing OLED display devices have high power consumption due to the source driving IC, which accounts for 17% to 20% of the total power consumption, and there is a need to reduce this consumption.
Innovation Solution
A display driving method that dynamically adjusts the power supply voltage to the source driving integrated circuit based on the actual required voltage, by determining the maximum voltage needed for data output to successive rows of pixel circuits and adding a preset voltage to calculate the required power supply voltage, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a preset power supply voltage is supplied to the source driving IC in advance, then the source driving IC can operate reliably, but the power consumption of the power supply increases
Solution Approach 1:
The patent applies dynamics by transitioning from a static preset power supply voltage to a dynamic power supply voltage that adjusts in real-time based on the actual data voltage requirements. The power supply voltage is dynamically calculated as the maximum data voltage plus a preset voltage offset, ensuring the source driving IC operates reliably with the minimum necessary voltage, thereby reducing power consumption while maintaining operational reliability
Solution Approach 2:
The patent changes the parameter of power supply voltage from a fixed preset value to a variable value that adapts to the actual needs of the source driving IC. By calculating the required power supply voltage based on the maximum data voltage of successive rows and adding a preset voltage offset, the system optimizes the voltage parameter to match actual operational requirements, reducing unnecessary power consumption while ensuring reliable operation
Data Source
AI summary
A display driving method and device, and a display device are provided. The method comprises: obtaining a data voltage to be output to each of successive k rows of pixel circuits by a source driving integrated circuit, where k is an integer and not less than 1; determining a maximum voltage of the data voltage to be output to each of the successive k rows of pixel circuits; determining a magnitude of a power supply voltage required for the source driving integrated circuit to output the data voltages to the successive k rows of pixel circuits in accordance with the maximum voltage; and supplying the required power supply voltage to the source driving integrated circuit in accordance with the determined magnitude of the required power supply voltage when the source driving integrated circuit outputs the data voltages to the successive k rows of pixel circuits. According to an embodiment of the disclosure, when a power supply voltage required for an actual operation of the source driving integrated circuit is relatively small, the power supply voltage supplied to the source driving integrated circuit is also relatively small, such that power consumption of the source driving integrated circuit can be reduced.