Luminance Uniformity Compensation Device for Display Panels
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Solution Overview
Problem
Display panels often suffer from luminance non-uniformity due to differences in light source driver chips, welding issues, and flatness problems, making it challenging to accurately predict and correct luminance uniformity, which affects user experience.
Innovation Solution
A compensation device that acquires luminance values, determines maximum and minimum luminance values, calculates the change amount needed to adjust luminance uniformity, and displays this information to users, allowing them to set desired luminance levels by adjusting the maximum luminance value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If luminance uniformity compensation is performed by adjusting display parameters, then luminance uniformity is improved, but maximum luminance value changes unpredictably
Solution Approach 1:
The system performs preliminary measurement of the display panel's actual luminance distribution characteristics before compensation. By measuring the initial luminance values across different regions and calculating the relationship between minimum luminance and maximum luminance, the system establishes a predictive model that allows users to foresee how maximum luminance will change before actual compensation is applied.
Solution Approach 2:
The system implements feedback by displaying the predicted maximum luminance value to the user based on the measured luminance distribution. This feedback loop allows users to understand the trade-off between improving luminance uniformity and maintaining maximum luminance, enabling informed decision-making about compensation settings.
2Manufacturing precision
If luminance uniformity is corrected without prediction, then manufacturing precision is improved, but user control and selection capability deteriorates
Solution Approach 1:
The system enables users to independently assess and control luminance uniformity compensation by providing them with predicted maximum luminance values. Users can self-adjust compensation settings based on their preferences without requiring technical expertise or external assistance, making the system user-friendly while maintaining precision.
3Manufacturing precision
If maximum luminance value is reduced to improve minimum luminance, then luminance uniformity is improved, but display brightness and visual quality deteriorates
Solution Approach 1:
The system provides dynamic control over luminance compensation by allowing users to adjust settings based on predicted outcomes. Users can dynamically balance between luminance uniformity and maximum luminance intensity, selecting compensation levels that match different viewing conditions and preferences rather than applying fixed compensation.
Data Source
AI summary
Embodiments of the disclosure relate to a compensation device of luminance uniformity and a controlling method thereof, more particularly, to a technology of predicting a level of maximum luminance value that is changed in compensating luminance uniformity of an image displayed on a display apparatus and providing it to a user.A compensation device of luminance uniformity according to an embodiment includes a data acquirer configured to acquire a luminance value of an image displayed on a display apparatus; a controller configured to determine a maximum luminance value and a minimum luminance value among the acquired luminance values, and determine luminance uniformity of the minimum luminance value based on the maximum luminance value, and determine a change amount of the maximum luminance value to be adjusted in order to change the determined luminance uniformity; and a display configured to display the change amount of the maximum luminance value adjusted to change the luminance uniformity, and the luminance uniformity that is changed in response to the change amount of the maximum luminance value.