Display Device Voltage Processing Module for Crosstalk Reduction
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Solution Overview
Problem
Liquid crystal displays (LCDs) suffer from horizontal crosstalk due to sudden voltage changes in data lines, resulting in horizontal black or white lines in the displayed image, which degrade image quality.
Innovation Solution
A display device with a voltage processing module that adjusts the voltage of the common electrode and data lines based on the difference between the common voltage signal and a standard voltage, using a voltage comparison module and superposition module to generate target voltage signals, ensuring image consistency between frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voltage is transmitted in data lines, then data signal transmission is achieved, but voltage jumps cause horizontal crosstalk and image quality degradation
Solution Approach 1:
The patent applies preliminary action by compensating for voltage changes in the (n+k)th frame based on the common voltage signal from the nth frame. The voltage processing module predicts and pre-adjusts the common electrode voltage before the actual display frame is rendered, preventing horizontal crosstalk from occurring rather than correcting it after the fact. This is achieved by calculating the voltage difference between frames and applying compensatory voltage adjustments in advance.
Solution Approach 2:
The patent implements feedback by continuously monitoring the common voltage signal and using it to adjust subsequent voltage outputs. The voltage processing module receives the common voltage signal as feedback, processes it through the voltage comparison module, and generates corrected voltage signals that account for observed voltage variations. This closed-loop feedback mechanism ensures that voltage jumps are compensated based on actual measured conditions.
2Object-affected harmful factors
If common voltage signal is adjusted in real-time, then horizontal crosstalk is reduced, but compensation delay occurs
Solution Approach 1:
The patent resolves the time delay issue by performing voltage compensation in advance for future frames rather than waiting to process the current frame. By using the common voltage signal from the nth frame to compensate the (n+k)th frame, the system proactively prepares compensation values before they are needed, eliminating processing delays that would otherwise occur during active display rendering.
Solution Approach 2:
The patent applies dynamics by making the compensation timing flexible and adaptive. The parameter k allows the system to dynamically adjust the compensation horizon based on processing capabilities and display requirements. This dynamic approach enables the system to optimize between compensation accuracy and timing, adjusting the look-ahead frame distance as needed to minimize delay while maintaining effective crosstalk reduction.
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
This solution effectively reduces or eliminates horizontal crosstalk by compensating for voltage changes between frames, improving image quality and alleviating compensation delay issues.
Implementation Method 1
the voltage processing module is configured to control a voltage of the at least one of the common electrode and the plurality of data lines in an (n+k)th frame through the first output node according to a difference between the common voltage signal of the nth frame and a standard voltage
Data Source
AI summary
The present invention provides a display device and a control method thereof. The display device includes a display panel and a voltage processing module. The display panel includes a common electrode and a plurality of data lines; wherein the voltage processing module is connected to the common electrode to determine a difference between a common voltage signal in an nth frame and a standard voltage, and is connected to at least one of the common electrode and the plurality of data lines, and controls a voltage of the at least one of the common electrode and the plurality of data lines in an (n+k)th frame, wherein both n and k are positive integers.