Source Driving Circuit Anti-Interference Method for Display Panels
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Solution Overview
Problem
RF noise from mobile phones interferes with the data signal transmission between a timing controller and a source driving circuit in display apparatuses, causing display abnormalities due to incorrect signal locking by the clock and data recovery circuit.
Innovation Solution
An integrated circuit with a source driving circuit and an anti-interference circuit that determines interference events and adjusts operation parameters, such as gain and bandwidth, to maintain correct signal locking and prevent display abnormalities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the source driving circuit uses fixed operation parameters for signal reception, then the circuit structure is simple, but the system cannot adapt to RF noise interference and maintains poor signal locking accuracy
Solution Approach 1:
The patent implements dynamic adjustment of operation parameters (gain and bandwidth) based on detected interference levels. The anti-interference circuit continuously monitors the input signal and automatically adjusts the receiving circuit's parameters in real-time, transforming a static system into a dynamic one that adapts to changing RF noise conditions while maintaining signal locking accuracy.
Solution Approach 2:
The patent introduces a feedback mechanism where the anti-interference circuit detects interference events and provides feedback to adjust the operation parameters of the receiving circuit. This closed-loop control allows the system to respond to RF noise interference and maintain proper signal locking by continuously monitoring and adjusting based on actual signal conditions.
2Reliability
If the receiving circuit processes data signals with high gain, then the signal processing capability is strong, but RF noise interference is amplified causing display abnormalities
Solution Approach 1:
The patent dynamically changes the operation parameters (gain and bandwidth) of the receiving circuit based on the detected interference level. When RF noise is detected, the system adjusts these parameters to reduce amplification of noise while maintaining the ability to process valid data signals, thereby resolving the contradiction between signal processing capability and noise amplification.
Solution Approach 2:
The patent implements dynamic adjustment of gain and bandwidth parameters in response to detected interference. The receiving circuit transitions from a static high-gain configuration to a dynamic system that adjusts its amplification characteristics based on real-time signal conditions, reducing noise amplification while preserving data signal processing capability.
3Reliability
If the anti-interference circuit continuously monitors and adjusts operation parameters, then RF noise interference is effectively mitigated, but the system complexity and processing overhead increase
Solution Approach 1:
The anti-interference circuit is integrated within the source driving circuit itself, allowing the system to self-monitor and self-adjust its operation parameters. The circuit uses its own internal resources to detect interference and modify its behavior, eliminating the need for external intervention and reducing overall system complexity while maintaining effective anti-interference capability.
Solution Approach 2:
The anti-interference circuit continuously monitors the input signal in advance to detect interference events before they cause significant damage to data processing. By performing preliminary detection and adjustment, the system prevents interference from propagating through the signal processing chain, reducing the need for complex post-processing correction mechanisms.
Data Source
AI summary
An integrated circuit for driving a display panel and an anti-interference method are provided. The integrated circuit can include a source driving circuit and an anti-interference circuit. The source driving circuit includes a receiving circuit configured to receive an input signal including image data and process the input signal based on at least one operation parameter to generate output data. The anti-interference circuit is coupled to the receiving circuit. The anti-interference circuit can determine whether an interference event occurs to the input signal based on the input signal or the output data to obtain a determination result and determines whether to adjust the at least one operation parameter of the receiving circuit according to the determination result.