Stereoscopic LCD Temperature Compensation via Lookup Tables
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Solution Overview
Problem
The response time of liquid crystal molecules in LCD panels varies with temperature changes, affecting the display performance of stereoscopic image display devices, leading to inconsistent stereoscopic image rendering.
Innovation Solution
A stereoscopic image display device and driving method that utilize an image compensator with a temperature compensation lookup table and a standard lookup table to adjust image data based on current temperature conditions, ensuring uniform performance by applying correction values to compensate for temperature-induced variations in liquid crystal molecule response speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the LCD panel is driven continuously, then the display operation is maintained, but the temperature of the LCD panel varies continuously causing response time variations of liquid crystal molecules
Solution Approach 1:
The patent applies preliminary action by pre-storing temperature-compensated lookup tables in the image compensator before the actual display operation. These lookup tables contain correction values calculated in advance for different temperature conditions, allowing the system to immediately apply appropriate corrections without waiting for temperature stabilization or real-time calculation during continuous operation.
Solution Approach 2:
The patent implements feedback by continuously monitoring the temperature of the LCD panel through a temperature sensor and using this information to dynamically select appropriate lookup tables and correction values. The temperature detection result is fed back to the image compensator, which then adjusts the image data accordingly, creating a closed-loop control system that maintains display performance consistency during continuous operation.
2Reliability
If temperature compensation is applied using lookup tables, then response time variations are compensated, but device complexity increases due to additional temperature detection and image processing components
Solution Approach 1:
The patent applies copying by creating multiple copies of lookup tables with different correction values for different temperature conditions. Instead of using complex real-time calculation algorithms, the system stores pre-calculated lookup tables that can be quickly retrieved and applied. This approach simplifies the processing architecture while maintaining accurate temperature compensation, as the lookup tables essentially copy the relationship between temperature, response time, and correction values in a ready-to-use format.
Solution Approach 2:
The patent uses preliminary action by pre-calculating and storing temperature-compensated correction values in lookup tables before the actual display operation. This eliminates the need for complex real-time calculations during display, reducing the processing burden on the image compensator and simplifying the overall device architecture while maintaining reliable temperature compensation.
3Reliability
If correction values are applied to image data, then temperature-dependent performance variations are compensated, but processing time increases due to additional image data conversion
Solution Approach 1:
The patent applies copying by using pre-calculated lookup tables that store correction values in a ready-to-retrieve format. Instead of performing complex mathematical calculations for each pixel during display, the system simply looks up the appropriate correction values from the pre-generated tables, significantly reducing processing time while maintaining accurate temperature compensation.
Solution Approach 2:
The patent implements preliminary action by pre-computing temperature-compensated correction values and storing them in lookup tables before the actual display operation. This allows the image compensator to quickly retrieve and apply corrections without performing time-consuming calculations in real-time, thus minimizing the processing time overhead during display while ensuring uniform display performance.
Data Source
AI summary
A stereoscopic image display device includes an image compensator, a signal controller, a data driver, and a display panel. The image compensator is configured to convert input image data to revised image data. The revised image data is obtained by compensating for temperature variations of the display panel. The signal controller is configured to output the revised image data. The data driver is configured to receive the revised image data. The display panel includes a plurality of pixels configured to display a left eye image and a right eye image in response to receiving a data voltage from the data driver. The image compensator includes a temperature compensation lookup table selector having a temperature compensation lookup table, and a standard lookup table selector having a standard lookup table and configured to select the revised image data according to correction values selected from the temperature compensation lookup table.