Display Panel Brightness Compensation for Special-Shaped Areas
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Solution Overview
Problem
Special-shaped display panels with non-display areas surrounded by display areas often experience reduced brightness due to differing loads, leading to a dim display effect.
Innovation Solution
A method and apparatus for determining a compensation parameter by acquiring current brightness values, calculating brightness compensation coefficients based on gray levels, and adjusting actual brightness values to improve display brightness, ensuring the display area is compensated effectively without exceeding original values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If special-shaped display area is designed to increase screen-to-body ratio, then screen-to-body ratio is improved, but display brightness of special-shaped display area becomes dim
Solution Approach 1:
The patent applies local quality by implementing different gray level compensation for the special-shaped display area versus the conventional display area. The processing circuit determines first compensation gray levels for the special-shaped display area and second compensation gray levels for the conventional display area based on their respective current gray levels, allowing each region to be optimized independently for its specific lighting conditions and structural characteristics.
Solution Approach 2:
The patent employs parameter changes by dynamically adjusting gray level parameters through compensation. The processing circuit calculates compensation gray levels based on current gray level values and applies these adjusted parameters to the display pixels, transforming the brightness parameter of the special-shaped display area to match the conventional display area without requiring physical structural changes.
2Illumination intensity
If gray level compensation is applied to special-shaped display area, then display brightness is improved, but excessive compensation may occur without proper control
Solution Approach 1:
The patent implements feedback control by using the current gray level of the special-shaped display area as input to determine the compensation gray level. The processing circuit receives the current gray level value, compares it against reference values stored in memory, and adjusts the compensation accordingly, creating a closed-loop control system that prevents over-compensation and ensures precision.
Solution Approach 2:
The patent applies preliminary action by pre-storing multiple groups of reference gray level values in the memory module, corresponding to different display states. This allows the processing circuit to quickly retrieve and apply appropriate compensation values without real-time complex calculations, ensuring both speed and accuracy in the compensation process.
Data Source
AI summary
A display panel and a display apparatus. The display panel includes: a substrate; a light-emitting unit on the substrate; an encapsulation layer on a side of the light-emitting unit away from the substrate, where the encapsulation layer includes a first inorganic film layer, a first auxiliary film layer and an organic film layer that are stacked on the light-emitting unit, an absolute value of a difference between a refractive index of the first inorganic film layer and a refractive index of the first auxiliary film layer is less than or equal to 0.05, and an extinction coefficient of the first auxiliary film layer for visible light is less than an extinction coefficient of the first inorganic film layer for visible light.