Display Panel Driving Circuit Noise Feedback for Crosstalk Reduction
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Solution Overview
Problem
Conventional display panels experience horizontal crosstalk due to data voltages interrupting driving voltages, causing noise and blur, which disrupts display quality.
Innovation Solution
A display panel driving circuit with series-connected pixel electrode driving modules and a voltage feedback module, where the feedback voltage is provided by the display panel to synchronize driving voltages with noise-carrying common voltages, thereby compensating for noise and reducing crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If polarity inversion is performed on each transistor according to a certain order, then the display panel can maintain stable operation, but data voltages interrupt driving voltages causing horizontal crosstalk and display quality degradation
Solution Approach 1:
The patent implements a feedback mechanism where the common voltage signal, which carries noise information from data voltage interruptions, is fed back to the pixel electrode driving modules. This feedback allows the driving circuit to compensate for the interruptions by adding the noise signal back to the driving voltage, thereby eliminating horizontal crosstalk while maintaining stable operation
Solution Approach 2:
The patent converts the harmful noise signal caused by data voltage interruptions into a beneficial compensation signal. By extracting the noise component from the common voltage and feeding it back to the pixel electrode driving modules, the circuit transforms the harmful horizontal crosstalk into a useful correction that improves display quality
2Productivity
If data voltages are transmitted to transistors, then the display panel can update display content, but the data voltages interrupt driving voltages causing noise and blur
Solution Approach 1:
The common voltage signal carrying noise information from data voltage transmission is fed back to the pixel electrode driving modules. This feedback mechanism allows the system to maintain high productivity by enabling continuous data updates while simultaneously compensating for the noise and blur effects caused by these updates
3Object-affected harmful factors
If feedback voltage is provided to pixel electrode driving modules, then horizontal crosstalk is relieved, but the circuit complexity increases due to voltage feedback module
Solution Approach 1:
The patent introduces a voltage feedback module that feeds back the common voltage signal to the pixel electrode driving modules. While this adds circuit elements, the feedback mechanism efficiently eliminates horizontal crosstalk by using the existing noise signal rather than requiring complex filtering or shielding circuits
Solution Approach 2:
The system uses its own internally generated noise signal (from the common voltage) to compensate for and eliminate the harmful effects. This self-service approach avoids the need for external correction circuits or additional complex components, thereby limiting the increase in circuit complexity
Data Source
AI summary
By following properties that there is coupled noise, which is coupled from a display panel, within at least one common voltage used on the display panel, the at least one common voltage is fed-back into a pixel electrode driving module, and driving voltages are generated accordingly, so that the generated driving voltages carry noises closes to coupled noises of the display panel. As a result, while the driving voltages carrying noises from the at least one common voltage, the pixel electrode driving module is capable of driving a corresponding pixel electrode with a stable voltage difference, and thereby capable of relieving horizontal crosstalk and raising a display quality of the display panel.