Dual-Mode Display Panel Gamma Control for Seamless Area Transitions
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Solution Overview
Problem
In display apparatuses with adjacent display areas operating in different modes, a visible boundary forms due to differences in light emission characteristics, compromising display quality.
Innovation Solution
Outputting different data voltages for the display areas using distinct gamma lookup tables to adjust luminance and create a seamless transition, compensating for varying viewing angles and luminance characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the same data voltage is output to both display areas for the same grayscale value, then the display operation is simple, but a visible boundary forms between the display areas due to different viewing angle characteristics
Solution Approach 1:
The patent applies local quality by outputting different data voltages to the first and second display areas based on their respective viewing angle characteristics. The display panel driver determines whether to output the same or different data voltages depending on the operating mode (public mode for both areas uses same voltage, private mode for one area uses different voltage), thereby achieving uniform display appearance in each local area while maintaining operational simplicity through mode-based control.
2Manufacturing precision
If different data voltages are output to display areas with different viewing angles, then the boundary visibility is reduced, but the device complexity increases
Solution Approach 1:
The patent implements dynamics by enabling the display panel driver to dynamically adjust data voltage output based on real-time mode determination. The driver switches between public mode (same data voltage for both areas) and private mode (different data voltages) configurations according to the operating conditions, allowing the system to adapt its complexity level to the actual display requirements without permanently increasing hardware complexity.
3Adaptability or versatility
If the first display area operates in public mode with wide viewing angle and the second display area operates in private mode with narrow viewing angle, then the viewing angle requirements are met, but a visible boundary forms between the display areas
Solution Approach 1:
The patent applies parameter changes by adjusting the data voltage parameter differently for the first and second display areas when operating in private mode. The display panel driver outputs a first data voltage to the first display area and a second data voltage to the second display area, where the voltages are different for the same grayscale value. This parameter adjustment compensates for the different viewing angle characteristics and eliminates the visible boundary while maintaining both wide and narrow viewing angle requirements.
Data Source
AI summary
A display apparatus includes a display panel and a display panel driver. The display panel includes a first display area and a second display area disposed adjacent to the first display area. The display panel driver is configured to output a first data voltage to the first display area and a second data voltage to the second display area. When the first display area operates in a public mode and the second display area operates in a private mode, the first data voltage is different from the second data voltage for a same grayscale value. A viewing angle of a display image displayed in the private mode is narrower than a viewing angle of a display image displayed in the public mode.