Liquid Crystal Display Dark-State Voltage Adjustment
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Solution Overview
Problem
The challenge in LCD panels is determining the dark-state voltage difference, which affects the contrast ratio, as the wide range of possible values makes it difficult to adjust effectively.
Innovation Solution
A method that involves obtaining multiple initial dark-state voltage differences, calculating their corresponding contrast ratios, identifying a reference dark-state voltage difference, and determining the optimal dark-state voltage difference based on contrast ratio changes to improve the contrast ratio of the LCD panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the dark-state voltage difference is adjusted to improve contrast ratio, then the contrast ratio is improved, but the complexity of voltage adjustment increases due to the wide range of possible values
Solution Approach 1:
The patent segments the voltage adjustment process into multiple discrete steps with predetermined voltage differences (e.g., 0.5V, 1.0V, 1.5V increments). Instead of adjusting dark-state voltage continuously across a wide range, the method divides the adjustment into manageable segments, making the process more controllable and less complex while still achieving contrast ratio optimization.
Solution Approach 2:
The patent changes the parameter approach by using fixed voltage difference increments rather than continuous voltage adjustment. The method systematically varies the dark-state voltage difference in predetermined steps and measures the corresponding contrast ratio at each step, transforming a complex continuous optimization problem into a structured discrete parameter search.
2Illumination intensity
If multiple voltage adjustments are performed to find optimal contrast ratio, then the contrast ratio is improved, but the time required for adjustment increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing a systematic adjustment methodology with predetermined voltage steps and measurement protocols. Before actual optimization begins, the framework for adjustment is prepared, including the sequence of voltage applications and the criteria for evaluation, which streamlines the subsequent optimization process and reduces overall adjustment time.
Solution Approach 2:
The patent implements feedback mechanisms by measuring the contrast ratio at each voltage adjustment step and using this information to guide subsequent adjustments. The method includes monitoring the contrast ratio changes and automatically determining when to stop adjusting based on predefined criteria (e.g., when contrast ratio improvement falls below a threshold), preventing unnecessary extended adjustments and reducing time loss.
Data Source
AI summary
A method for adjusting dark-state voltage applied on a liquid crystal panel, a dark-state voltage adjusting device and a storage medium are proposed. The method includes: obtaining a plurality of initial dark-state voltage differences; obtaining a contrast ratio corresponding to each of the initial dark-state voltage differences based on the plurality of initial dark-state voltage differences; obtaining a reference dark-state voltage difference in the plurality of initial dark-state voltage differences, and obtaining a contrast ratio change corresponding to each of the initial dark-state voltage differences based on the reference dark-state voltage difference; and determining a dark-state voltage difference of the LCD panel based on the contrast ratio change corresponding to each of the initial dark-state voltage differences.