Source Driver IC Energy Harvesting for Display Power Reduction
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Solution Overview
Problem
Existing display devices face challenges in reducing power consumption, particularly in the display panel and driving devices, as current techniques are inefficient in minimizing energy usage.
Innovation Solution
A display driving device equipped with an energy harvesting device that converts thermal energy into electrical energy using a thermal energy converter and energy storage, integrated with the source driver IC, to supply power and generate auxiliary voltages, thereby reducing overall power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If an energy harvesting device is added to convert thermal energy into electrical energy, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The energy harvesting device is integrated directly into the source driver IC substrate, merging the thermal energy conversion function with the existing display driving circuitry. This integration reduces the need for separate external components and minimizes system complexity despite adding energy harvesting capability.
Solution Approach 2:
The source driver IC substrate serves multiple functions: it drives the display panel and simultaneously hosts the energy harvesting device that converts thermal energy to electrical energy. This multi-functionality reduces overall system complexity by combining power management and energy harvesting in a single integrated platform.
2Area of stationary object
If energy storage components are integrated on the source driver IC, then area occupied is reduced, but manufacturing complexity increases
Solution Approach 1:
The energy storage component is integrated directly onto the source driver IC substrate, merging storage functionality with the driving circuitry. This integration eliminates the need for separate external capacitors or batteries, reducing overall area occupation.
Solution Approach 2:
The energy storage component is nested within or alongside the source driver IC structure, utilizing the same substrate and packaging infrastructure. This nesting approach minimizes additional area requirements while sharing manufacturing processes between the IC and storage component.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces power consumption in display driving devices by harnessing thermal energy, minimizing the area and volume occupied by the energy harvesting components, and providing a stable auxiliary voltage, thus enhancing energy efficiency.
Implementation Method 1
a thermal energy converter configured to convert thermal energy generated in the source driver IC to output an energy harvesting current
Implementation Method 2
an energy storage directly connected to the thermal energy converter, and configured to receive the energy harvesting current, store power, and output a first auxiliary voltage that is a voltage generated due to the stored power
Data Source
AI summary
There is disclosed a display driving device configured to drive a display device for displaying an image, including a source driver integrated circuit (IC) configured to convert image data into a source signal, and an energy harvesting device configured to convert thermal energy into electrical energy and supply the electrical energy to the source driver IC, wherein the energy harvesting device includes a thermal energy converter configured to convert thermal energy generated in the source driver IC to output an energy harvesting current, and an energy storage directly connected to the thermal energy converter, and configured to receive the energy harvesting current, store power, and output a first auxiliary voltage that is a voltage generated due to the stored power, wherein the thermal energy converter and the energy storage are located on the source driver IC.