Dynamic Overdriving Value Adjustment for LCD Frame Rate and Temperature
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Solution Overview
Problem
Conventional look-up tables (LUTs) for generating overdriving values for LCDs ignore frame rate and temperature, leading to inaccurate liquid crystal molecule rotation and transition, particularly at high frame rates, resulting in degraded display quality.
Innovation Solution
An apparatus and method that includes an outside environment sensor unit and an adjustment module to detect frame rate and temperature, adjusting overdriving values using coefficients and slope values to improve the precision of overdriving values for high display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional look-up table (LUT) is used to generate overdriving values, then the apparatus structure remains simple, but the display quality degrades at high frame rates and varying temperatures due to inaccurate overdriving values
Solution Approach 1:
The patent transforms the static LUT into a dynamic overdriving value generation system that adapts to varying frame rates and temperatures. The adjustment module dynamically modifies overdriving values based on real-time environmental parameters, making the system flexible and adaptive rather than fixed and static.
Solution Approach 2:
The patent introduces frame rate and temperature as additional parameters that influence overdriving value generation. By monitoring these environmental parameters and adjusting overdriving values accordingly, the system achieves higher precision without requiring a complete structural overhaul.
2Adaptability or versatility
If the LUT is designed to work at a specific frame rate, then the generation of overdriving values is straightforward, but the display quality deteriorates when the frame rate varies from the design value
Solution Approach 1:
The patent implements a feedback mechanism where the actual frame rate and temperature are continuously monitored and used to adjust the overdriving values. This closed-loop control ensures that the system adapts to varying operating conditions and maintains high precision regardless of frame rate changes.
Solution Approach 2:
The system transitions from a static LUT designed for a specific frame rate to a dynamic adjustment module that continuously adapts to the actual frame rate and temperature conditions, ensuring optimal performance across varying operating scenarios.
3Manufacturing precision
If temperature compensation is added to the LUT, then the overdriving values become more accurate at varying temperatures, but the device complexity increases
Solution Approach 1:
The patent incorporates temperature as an additional parameter in the overdriving value generation process. By reading the temperature sensor value and using it to adjust the overdriving values through the adjustment module, the system achieves temperature compensation without requiring a completely new apparatus design.
Solution Approach 2:
The adjustment module serves as an intermediary between the temperature sensor and the LUT, processing the temperature information and modifying the overdriving values accordingly. This intermediary approach allows temperature compensation to be integrated smoothly into the existing system architecture.
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
Enables high-precision overdriving values for flat panel displays even at varying frame rates and temperatures, enhancing display quality by precisely controlling frame transitions.
Implementation Method 1
The outside environment sensor unit includes a heat-sensitive resistor, a linear resistor and an analog-to-digital converting unit. The heat-sensitive resistor and the linear resistor are connected in series between the output terminal of a voltage source and a grounding terminal; at an electrical coupling between the heat-sensitive resistor and the linear resistor, i.e. a node, an analog temperature measurement result is provided
Data Source
AI summary
An apparatus and a method for generating overdriving values are provided, used to generate the overdriving values for displaying image data. The apparatus for generating overdriving values includes an outside environment sensor unit and an adjustment module. The outside environment sensor unit is for detecting at least an environment parameter. The adjustment module, electrically coupled with the outside environment sensor unit, receives environment parameters, generates and outputs the adjustment overdriving values according to the environment parameters. The above-mentioned environment parameters include at least one of a frame rate and a temperature.