Display Panel Block Segmentation for Signal Integrity
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Solution Overview
Problem
Large size display panels face signal distortion due to increased impedance and inadequate charging time for pixels, which prevents complete display of gray level changes.
Innovation Solution
A display apparatus with a display panel divided into blocks, each containing a light conversion circuit with pull-up and pull-down circuits and a data voltage selection circuit, using light pulse signals to generate voltage pulse signals and supply data signals to the pixel array, thereby mitigating signal attenuation and ensuring sufficient charging time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the display panel size is increased, then the display area is improved, but the tracing impedance increases causing signal distortion
Solution Approach 1:
The display panel is divided into multiple display blocks (e.g., first display block, second display block, third display block, fourth display block), each independently driven by its own light conversion circuit. This segmentation reduces the tracing impedance of individual signal paths while maintaining overall large display area, thereby preventing signal distortion.
2Measurement precision
If the resolution is increased, then the display quality is improved, but the charging time of each row is shortened resulting in insufficient charging capability
Solution Approach 1:
The light conversion circuit generates voltage pulse signals in advance to prepare for pixel charging. By pre-generating the voltage pulses and using pull-up/pull-down circuits to quickly establish proper voltage levels, the system ensures sufficient charging time for each row even at high resolutions, allowing pixels to reach target voltage completely.
3Area of stationary object
If the display panel size is increased, then the display area is improved, but the charging capability becomes insufficient to meet the charging demand
Solution Approach 1:
The display panel is divided into multiple display blocks (e.g., first display block, second display block, third display block, fourth display block), each independently driven by its own light conversion circuit. This segmentation reduces the tracing impedance of individual signal paths while maintaining overall large display area, thereby preventing signal distortion.
4Productivity
If the scanning speed is increased, then the productivity is improved, but the pixels do not have enough time to be charged to target voltage
Solution Approach 1:
The light conversion circuit generates voltage pulse signals in advance to prepare for pixel charging. By pre-generating the voltage pulses and using pull-up/pull-down circuits to quickly establish proper voltage levels, the system ensures sufficient charging time for each row even at high resolutions, allowing pixels to reach target voltage completely.
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 prevents signal distortion and ensures pixels have enough time to charge, allowing for accurate display of gray levels without attenuation issues.
Implementation Method 1
The light conversion circuit receives a light pulse signal and has a pull-up circuit and a pull-down circuit, where the pull-up circuit and the pull-down circuit output the system high voltage or the system low voltage according to the light pulse signal to form a voltage pulse signal
Data Source
AI summary
A display apparatus including a display panel is provided. The display panel has a plurality of display blocks, wherein each display block includes a light conversion circuit, a pixel array, and a data voltage selection circuit. The light conversion circuit receives the light pulse signal and has a pull-up circuit and a pull-down circuit, wherein the pull-up circuit and the pull-down circuit are coupled between a system high voltage and a system low voltage, and the pull-up circuit and the pull-down circuit output the system high voltage or system low voltage according to the light pulse signal to form a voltage pulse signal. The data voltage selection circuit is coupled to the light conversion circuit and the pixel array and receives an AC waveform voltage to supply a data signal to the pixel array according to the voltage pulse signal.