Display Luminance Uniformity Control via Threshold Adjustment
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Solution Overview
Problem
Current display technologies face challenges in achieving luminance uniformity across different display sections, resulting in significant luminance differences that persist even after homogenization processes, leading to unevenness in display regions, especially in integrated or spliced screen configurations.
Innovation Solution
A display control method that configures a display region with multiple sections and adjusts their initial luminance to ensure that the luminance difference between these sections falls within a preset range, using techniques such as adjusting light-emitting current and time for sub-regions, and determining whether the luminance uniformity meets specific criteria to achieve targeted luminance values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a luminance homogenization repair process is performed to adjust luminance of display sections, then the luminance of every display section changes synchronously, but the luminance difference proportion between various display sections is maintained, resulting in persistent luminance unevenness
Solution Approach 1:
The patent applies local quality by differentiating the luminance adjustment strategy between first display sections (with luminance within the first threshold) and second display sections (with luminance outside the first threshold). Specifically, second display sections are adjusted to have luminance within a second threshold that is smaller than the first threshold, creating non-uniform adjustment characteristics across different regions to achieve overall luminance uniformity while reducing luminance difference proportions.
Solution Approach 2:
The patent changes the luminance parameter of display sections by adjusting the initial luminance of second display sections to be within a second threshold. This parameter change approach directly modifies the luminance values to reduce the luminance difference proportion between different display sections, thereby improving luminance uniformity while addressing the manufacturing precision issue.
2Illumination intensity
If the initial luminance of second display sections is adjusted to reduce luminance difference proportion, then luminance uniformity improves, but the complexity of luminance control increases
Solution Approach 1:
The patent simplifies the control complexity by establishing clear parameter thresholds (first threshold and second threshold) for luminance adjustment. By defining specific luminance ranges and adjustment criteria, the system provides a straightforward control mechanism that reduces luminance difference proportions without requiring complex control algorithms, thus improving luminance uniformity while maintaining manageable system complexity.
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
This method effectively reduces luminance differences between display sections, improving luminance uniformity and ensuring that the display region meets preset luminance and area ratio standards, thereby enhancing the overall display quality.
Implementation Method 1
adjusting a light-emitting current and/or light-emitting time of the at least one display sub-region in one frame, to control the display parameter difference between the first display section and the at least one second display section to be in the preset range
Data Source
AI summary
A display control method and a display device are provided. In the display control method, when a display parameter difference between a first display section and at least one second display section is out of a preset range, an initial luminance of a respective display section is adjusted, so that the display parameter difference between the first display section and the at least one second display section is in the preset range.