In-Cell Display Voltage Compensation for Stripe Elimination
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Solution Overview
Problem
The integration of touch panels with liquid crystal panels, particularly using the In-cell method, often results in undesirable stripes during image reloading due to voltage differences between common electrodes, affecting display performance.
Innovation Solution
A display control method and feedback circuit that select and compare voltages of adjacent common electrodes, compensating input voltages of pixel units to ensure consistency, thereby eliminating voltage differences and avoiding stripes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the In-cell method is used to integrate touch panel and liquid crystal panel, then the integration degree is improved, but voltage differences between common electrodes cause display stripes
Solution Approach 1:
The patent implements a feedback mechanism by detecting the voltage difference between adjacent common electrodes and using this information to adjust the voltage applied to pixel units. The detection unit measures voltage differences, and the compensation unit adjusts voltages based on these measurements, creating a closed-loop control system that eliminates display stripes while maintaining the In-cell integration approach.
Solution Approach 2:
The patent changes the voltage parameter dynamically by detecting voltage differences between common electrodes and compensating by adjusting the voltage applied to pixel units. This parameter adjustment ensures that pixel units receive consistent voltage signals, preventing the formation of display stripes while preserving the integrated touch panel functionality.
2Manufacturing precision
If voltage compensation is applied to pixel units, then display consistency is improved, but system complexity increases
Solution Approach 1:
The patent segments the compensation process into distinct functional units: a detection unit that measures voltage differences between common electrodes, and a compensation unit that adjusts pixel unit voltages based on detected differences. This segmentation allows the complex compensation function to be implemented through modular, manageable components rather than a monolithic system.
Solution Approach 2:
The patent introduces an intermediary compensation unit that acts as a mediator between the common electrodes and pixel units. This intermediary detects voltage anomalies and applies corrective voltage adjustments, serving as a buffer that simplifies the overall system architecture by handling compensation tasks in a dedicated, isolated manner.
Data Source
AI summary
A display control method, a feedback circuit, a display device and an IC circuit are disclosed. The display control method is applied in the display device. The display control method includes: selecting two adjacent common electrodes of a plurality of common electrodes; collecting voltages of the two adjacent common electrodes; comparing the collected voltages of the two adjacent common electrodes and obtaining a comparison result. When the comparison result meets a preset condition, the method further includes compensating input voltages of pixel units in two pixel unit rows of a plurality of pixel unit rows corresponding to the two adjacent common electrodes based on the comparison result, so as to enable the voltages applied on the pixel units in the two pixel unit rows to be consistent.