Curved Display Panel Brightness Compensation via Radius-Based Voltage Adjustment
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Solution Overview
Problem
Existing curved display panels experience brightness distortion when bent into a curved surface due to changes in illumination area, as the brightness of sub-pixels differs from their flat state, leading to inconsistent display quality.
Innovation Solution
A display method that determines data voltage for each sub-pixel based on the radius of curvature and gray scale, using lookup tables and gamma reference voltage groups to compensate for brightness changes, ensuring consistent brightness across the curved display panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a flat display panel is bent into a curved surface to achieve a curved display form, then the display panel can be applied to curved surfaces and have aesthetic appearance, but the illumination area of sub-pixels changes causing brightness distortion and inconsistent display quality
Solution Approach 1:
The patent applies parameter changes by adjusting the data voltage of sub-pixels based on their position in the curved display panel. Different sub-pixels receive different voltage corrections according to their specific location, compensating for the brightness distortion caused by curvature. This involves changing the electrical parameters (voltage) of sub-pixels to maintain consistent brightness across the curved surface.
Solution Approach 2:
The patent implements local quality by applying position-specific compensation to different sub-pixels. Each sub-pixel's data voltage is adjusted according to its unique position in the curved arrangement, rather than applying a uniform correction. This localized approach ensures that each sub-pixel contributes to consistent overall brightness despite the curved geometry.
2Manufacturing precision
If data voltage for each gray scale is determined for sub-pixels in a flat state to achieve desired display effect, then the display panel meets gamma value and brightness requirements in flat state, but the same data voltage causes brightness distortion when the panel is curved
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing compensation values for each sub-pixel position before actual display operation. The compensation data is prepared in advance based on the curved geometry, so that when the display operates, the correct compensated voltage is already available for each sub-pixel, eliminating brightness distortion without real-time calculation.
Solution Approach 2:
The patent uses copying by creating a compensation map or lookup table that stores the relationship between sub-pixel positions and required voltage adjustments. This compensation data structure is then referenced during display operation to apply the appropriate corrections, effectively copying the geometric information into a usable compensation format.
Data Source
AI summary
The present disclosure provides a display method of a curved display panel, and a curved display device. The display method of the curved display panel according to the present disclosure includes: obtaining a radius of curvature of the curved display panel and acquiring image data, wherein the image data includes a gray scale corresponding to each sub-pixel; and determining a data voltage output to each sub-pixel according to the radius of curvature and a gray scale corresponding to the sub-pixel.