Automotive Multi-Panel Display Gamma Control for Luminance Uniformity
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Solution Overview
Problem
Existing display devices in vehicles face issues with luminance uniformity across multiple display panels when displaying panoramic images due to luminance deviations among individual panels.
Innovation Solution
A display device that uniformly controls luminance across multiple display panels by supplying individual gamma voltages or a common gamma voltage based on operation modes and emission angles, using a configuration that includes first and second data driving circuits, a gamma circuit, and a timing controller to manage gamma voltages accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display panels are used to display panoramic images, then the display area and viewing coverage are improved, but luminance uniformity deteriorates due to luminance deviations among individual panels
Solution Approach 1:
The patent divides the luminance control into separate segments for each display panel by providing individual gamma voltage control circuits for each panel. This allows independent adjustment of luminance characteristics for each panel, enabling uniformity across the combined panoramic display area while maintaining the benefits of multiple panels.
Solution Approach 2:
The patent applies local quality by allowing different gamma voltages to be supplied to different display panels based on their specific luminance characteristics and emission angles. Each panel can have customized luminance parameters optimized for its position and orientation, achieving overall uniformity while accounting for local variations.
2Illumination intensity
If individual gamma voltages are supplied to each display panel, then luminance uniformity is improved, but device complexity increases
Solution Approach 1:
The patent implements a universal gamma voltage generation system where a single gamma voltage control circuit is designed to generate and distribute gamma voltages to multiple display panels. This multi-functional circuit reduces overall complexity by consolidating control functions while still enabling individual panel adjustment through a unified architecture.
Solution Approach 2:
The patent merges the gamma voltage control functions for multiple display panels into a single integrated control circuit. By combining the control logic and voltage generation into one unit that serves all panels, the system reduces the number of separate components while maintaining the capability to individually adjust each panel's luminance.
3Illumination intensity
If gamma voltages are adjusted based on emission angles, then image quality consistency is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic gamma voltage adjustment where the gamma voltages are modified in real-time based on the emission angles of each display panel. This dynamic adaptation allows the system to optimize image quality for each panel's viewing angle while consuming only the necessary power for the required adjustments, rather than using fixed high-power settings for all panels.
Data Source
AI summary
Embodiments of the disclosure may provide a display device comprising a first display panel configured to display a first image; a second display panel configured to display a second image; a gate driving circuit configured to supply gate signals to the first display panel and the second display panel; a first data driving circuit configured to supply a first data voltage to the first display panel; a second data driving circuit configured to supply a second data voltage to the second display panel; a gamma circuit configured to supply gamma voltages to the first data driving circuit and the second data driving circuit; and a timing controller configured to supply image data to the first data driving circuit and the second data driving circuit, and control the gamma circuit to change the gamma voltages supplied to the first data driving circuit and the second data driving circuit depending on driving modes.