Dynamic Over-Drive Controller for LCD Panel Block Compensation
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Solution Overview
Problem
Current over-drive controllers for LCD monitors use a single set of fixed over-drive delta values, leading to 'overshoot' or 'undershoot' effects, residual images, blurring, and visual distortions due to variations in panel fabrication and environmental conditions, necessitating dynamic adjustment of over-drive delta values based on panel properties and user viewing locations.
Innovation Solution
An over-drive controller with an analyzing unit and over-drive delta value determining unit that generates over-drive information from pixel position or visual angle signals to dynamically select and adjust over-drive delta values from multiple tables stored in a processor or storage unit, ensuring optimal response time compensation for each panel block and viewing condition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a single set of fixed over-drive delta values is used for all panels, then device complexity is reduced and ease of manufacture is improved, but manufacturing precision deteriorates due to panel fabrication variations causing overshoot, undershoot, and residual images
Solution Approach 1:
The patent divides the display panel into multiple blocks (e.g., first block and second block) and assigns different over-drive delta value tables to each block. This allows each block to have customized over-drive compensation parameters tailored to its specific fabrication characteristics, thereby improving manufacturing precision without significantly increasing overall system complexity.
Solution Approach 2:
The patent changes the over-drive delta values based on panel block properties and environmental conditions. By storing multiple sets of over-drive delta values and selecting appropriate sets based on detected panel characteristics, the system adapts parameters to match specific panel variations, resolving the contradiction between fixed parameters and manufacturing precision.
2Device complexity
If one set of over-drive delta value table is adopted for a batch of panels, then device complexity is reduced, but reliability deteriorates due to response time variations from different fabrication processes and environments
Solution Approach 1:
The patent implements a dynamic over-drive control system that can switch between different over-drive delta value tables based on detected panel block properties and environmental conditions. This dynamic adaptation ensures reliable response time compensation across panels from different fabrication processes and environments without requiring overly complex static configurations.
Solution Approach 2:
The system incorporates detection mechanisms that identify panel block properties and environmental conditions, then uses this feedback information to select the appropriate over-drive delta value table. This feedback loop ensures reliable display performance by continuously matching the over-drive parameters to actual panel characteristics.
3Ease of operation
If fixed over-drive delta values are used, then ease of operation is improved, but adaptability deteriorates because visual effects differ under different environmental conditions and viewing locations
Solution Approach 1:
The patent creates a universal over-drive control system that can handle multiple panel blocks and environmental conditions through a single integrated controller. The controller stores multiple over-drive delta value tables and can adaptively select the appropriate table based on current conditions, providing both ease of operation and broad adaptability across different scenarios.
Data Source
AI summary
An over-drive controller applied to a display panel and a method for over-drive control are provided. The over-drive controller includes an analyzing unit and an over-drive delta value determining unit. The analyzing unit is arranged for analyzing information of a current pixel in order to generate an over-drive information. The over-drive delta value determining unit is coupled to the analyzing unit, and is arranged for determining an over-drive delta value according to the over-drive information. Herein the over-drive information includes a position information or a field information of the current pixel.