Tiled Display Power Voltage Compensation for Luminance Uniformity
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Solution Overview
Problem
Tiled display apparatuses experience luminance and color deviation discrepancies at panel boundaries due to varying power voltage levels, which degrade display quality.
Innovation Solution
A display apparatus comprising multiple display panels, a power voltage generator, and a driving controller that adjusts power voltages based on feedback from panels to generate compensation voltages, ensuring uniformity across panel boundaries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display panels are tiled together to form an enlarged display apparatus, then the display area is increased, but luminance and color deviation discrepancies occur at panel boundaries due to power voltage level differences
Solution Approach 1:
The patent applies local quality by providing separate power voltage generators for each display panel, allowing independent control and adjustment of power voltage levels at each panel. This enables localized compensation at panel boundaries where luminance and color deviations occur, while maintaining the overall enlarged display area through the tiled configuration of multiple panels.
2Area of stationary object
If multiple display panels are tiled together to form an enlarged display apparatus, then the display area is increased, but color deviation discrepancies occur at panel boundaries due to power voltage level differences
Solution Approach 1:
The patent applies local quality by providing separate power voltage generators for each display panel, allowing independent control and adjustment of power voltage levels at each panel. This enables localized compensation at panel boundaries where luminance and color deviations occur, while maintaining the overall enlarged display area through the tiled configuration of multiple panels.
3Manufacturing precision
If power voltage levels are adjusted to compensate for luminance and color deviations at panel boundaries, then display quality is improved, but device complexity increases due to additional control circuits
Solution Approach 1:
The patent applies feedback by incorporating feedback circuits that detect power voltage levels at each display panel and provide this information to control circuits. The control circuits then adjust the power voltage generator outputs based on this feedback, enabling automatic compensation for luminance and color deviations at panel boundaries without requiring complex manual calibration systems.
Data Source
AI summary
A display apparatus includes a plurality of display panels, a power voltage generator and a driving controller. The power voltage generator generates power voltages of the plurality of display panels. The driving controller receives the power voltages from feedback points of the plurality of display panels and generates a control signal and controls levels of the power voltages based on fed-back power voltages from the feedback points of the plurality of display panels. The power voltage generator adjusts the levels of the power voltages and generates compensation power voltages based on the control signal.