Display Driver Output Inductor Layout for Spike Voltage Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display panel devices face issues with spike voltage generation during charging and discharging, leading to increased operating temperatures and inefficient heat dissipation, which are not effectively addressed by conventional methods that require additional fabrication steps or enlarged layout areas.
Innovation Solution
A display driving circuit structure incorporating an operational amplifier circuit, switching element, and output inductor to reduce spike voltage, optionally with a resistor, effectively suppressing spike voltage and reducing operating temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat dissipation patch or additional adhesive is used, then temperature control is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent extracts and removes the heat dissipation patch and additional adhesive from the display panel structure, eliminating the need for these separate heat management components while maintaining effective temperature control through the driver IC's internal design
Solution Approach 2:
The patent merges the heat dissipation function into the driver IC chip itself by designing an optimized output circuit structure that inherently manages heat generation, combining driving and thermal management functions in a single integrated component
2Temperature
If heat dissipation layout area is increased, then temperature control is improved, but manufacturing cost increases
Solution Approach 1:
The patent applies local quality optimization by concentrating heat management capabilities within the driver IC chip's output circuit structure, creating localized thermal management efficiency without requiring expanded overall layout area for heat dissipation
3Power
If capacitor charging and discharging is performed, then power supply function is achieved, but spike voltage is generated
Solution Approach 1:
The patent converts the harmful spike voltage generated during capacitor charging and discharging into a beneficial outcome by using the output inductor to suppress the spike, transforming what would be a harmful electrical transient into an opportunity to demonstrate effective circuit design that protects the display panel from voltage damage
Solution Approach 2:
The patent introduces an output inductor as an intermediary component between the capacitor and the display panel, which mediates the harmful interaction by filtering out spike voltage while allowing normal power supply current to pass through, effectively decoupling the power supply function from the spike generation problem
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 proposed circuit structure achieves a reduction in spike voltage by 4-5°C, optimizing spike reduction efficiency and cooling down the display panel's temperature while minimizing redundant production costs and layout complexity.
Implementation Method 1
an output inductor design is disposed therein, so as to reduce a spike voltage of the output signal
Implementation Method 2
achieve in effectively cooling down operating temperatures of the display panel
Data Source
AI summary
A display driving circuit structure with spike reduction is provided, comprising an operational amplifier circuit, a switching element and an output inductor. The operational amplifier circuit includes a first terminal receiving an input signal and an inverting terminal. The switching element has a first end electrically connected with the operational amplifier circuit and a second end opposite to the first end. The output inductor is electrically connected between the second end of the switching element and an output node, where an output signal is generated and provided. By employing the generated output signal to drive a display panel, the spike voltage of the output signal can be significantly reduced, and as a result, the operating temperature of the display panel can be effectively reduced by at least 4° C. It is believed that the present invention is beneficial to maintaining both low complexity and process cost of the driver ICs.