Curved Display Pixel Brightness Gradient Control
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Solution Overview
Problem
Display devices with curved areas suffer from visual defects, such as tinted or jagged edges, when displaying images, due to the challenges of driving pixels effectively in non-polygonal shaped display areas.
Innovation Solution
A driving device and method that adjust the brightness of pixels along a curved edge by sending specific voltage instructions based on their location, using a processor to dim pixels according to a gradient, ensuring that pixels at the step end of the curved edge are less bright and those further away are brighter, thereby reducing or eliminating image defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pixels along the curved edge are driven with uniform brightness, then the display structure is simple, but visual defects such as tinted or jagged edges occur
Solution Approach 1:
The patent applies local quality by dividing pixels into different groups based on their position relative to the curved edge. Pixels at the curved edge (second pixels) are driven with different brightness levels than pixels in the straight portion (first pixels). Specifically, the brightness of pixels along the curved edge is gradually adjusted to match the brightness of pixels at the step end, eliminating visual defects while maintaining structural simplicity.
2Object-affected harmful factors
If pixels at the curved edge are made brighter to compensate for visual defects, then image quality improves, but power consumption increases
Solution Approach 1:
The patent changes the brightness parameter of pixels based on their position. Instead of uniformly increasing brightness across all curved edge pixels, the invention selectively adjusts brightness only for pixels that would otherwise appear dimmer due to the curved geometry. The processor identifies pixels at the curved edge and adjusts their driving signals to achieve uniform perceived brightness, minimizing unnecessary power consumption while improving image quality.
Data Source
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AI summary
A display device, a driving device, and a method that eliminates or reduces an image defect in a curved area of a display area of a display device. A display device includes a display area including a first pixel, a second pixel disposed along a curved edge of the display area, and a third pixel not corresponding to the curved edge, and a processor configured to drive the first pixel to have a first brightness, drive the second pixel to have a second brightness that is brighter than the first brightness, and drive the third pixel to have a third brightness that is brighter than the second brightness.