Display Control System Optimizing Peak Luminance via Line Segmentation
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Solution Overview
Problem
Self-light emitting displays with matrix-arranged data and scanning electrodes face limitations in enhancing peak luminance due to restricted line lighting-up times, which hinder increased display luminance.
Innovation Solution
A control system that classifies input signal levels on each line, determines the number of lighting-up times based on signal classes and reference values, and performs correction processing to optimize lighting-up patterns and signal gain for each line, allowing for enhanced peak luminance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the number of line lighting-up times is increased to enhance display luminance, then display luminance is improved, but peak luminance cannot be sufficiently increased due to scanning driver performance limitations
Solution Approach 1:
The display lines are segmented into multiple groups, with each group being lit up a different number of times during one field period. This segmentation allows the system to optimize peak luminance for specific lines without requiring all lines to be lit up equally, thereby overcoming the scanning driver performance limitation while still achieving enhanced display luminance where needed.
Solution Approach 2:
Different lines are assigned different lighting-up times based on their specific requirements. Lines requiring higher peak luminance are lit up more times, while other lines use fewer lighting-up times. This local optimization approach allows peak luminance to be enhanced in specific areas without uniformly increasing the complexity across the entire display system.
2Illumination intensity
If all lines are lit up the same number of times, then display uniformity is maintained, but peak luminance enhancement is restricted
Solution Approach 1:
The display lines are divided into multiple groups with different lighting-up frequencies. This segmentation breaks the uniform lighting pattern, allowing specific line groups to be illuminated more frequently to achieve higher peak luminance while other groups maintain lower lighting-up times, thus resolving the contradiction between peak luminance enhancement and lighting consistency.
Solution Approach 2:
The lighting-up time parameter is varied across different line groups rather than being kept constant. By changing this parameter selectively for different lines, the system achieves enhanced peak luminance in specific areas while maintaining overall display functionality, thereby resolving the contradiction between peak luminance and lighting uniformity.
Data Source
AI summary
A display is provided with a self-light emitting display unit and includes: first means detecting the maximum value of input signals on each line; second means not only determining which of predetermined plural classes each line belongs to using the maximum value of the line and predetermined threshold values, but also calculating a total number of lines belonging to each class; and third means determining the number of lighting-up times in each class in one field period based on the total number of lines belonging to the class obtained by the second means and a predetermined reference total number of lighting-up times and furthermore, determining the number of lighting-up times on each line in one field period based on a result of classification on the line obtained by the second means and the number-of lighting-up times on each class in one field period.