Non-Rectangular Display Pixel Structure for Boundary Color Uniformity
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Solution Overview
Problem
Non-rectangular display devices often suffer from color differences and jagged boundaries due to pixel blocking by frames, which compromises image quality.
Innovation Solution
A display device comprising ordinary pixels, auxiliary pixels, and a frame, where the driving chip adjusts the luminance of auxiliary pixels to match the target luminance of ordinary pixels, ensuring consistent light emission and minimizing color differences at the boundary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the frame covers part of the rectangular panel to create a non-rectangular active area, then the aesthetics and practicability of the display device are improved, but the pixels at the boundary of the active area are blocked by the frame causing color difference
Solution Approach 1:
The pixel array is segmented into ordinary pixels and auxiliary pixels. The auxiliary pixels are specifically positioned at the boundary regions and contain only the color sub-pixel type that is not blocked by the frame (e.g., red and green sub-pixels when blue is blocked). This segmentation allows the display to maintain color accuracy at boundaries by compensating for the blocked sub-pixels through the auxiliary pixel configuration.
2Manufacturing precision
If pixels are arranged in various shapes to avoid blocking by the frame, then each pixel can be fully exposed, but obvious jagged shapes appear at the boundary of the active area
Solution Approach 1:
Different pixel configurations are applied to different locations within the display panel. Ordinary pixels with complete color sub-pixels are used in the central region where all sub-pixels are visible, while auxiliary pixels with selectively omitted sub-pixels are used at the boundary regions. This local differentiation ensures that pixels are fully exposed where possible while maintaining smooth boundary appearance by adapting the pixel composition to the local geometric constraints.
3Adaptability or versatility
If the frame is adjusted to create various non-rectangular shapes, then the display device adaptability is improved, but the boundary of the active area exhibits color difference and jaggedness
Solution Approach 1:
The system dynamically adapts the pixel configuration based on the frame's position and the resulting blocked regions. The driving chip receives information about which sub-pixels are blocked and adjusts the activation of ordinary and auxiliary pixels accordingly. This dynamic adaptation allows the display to maintain high image quality at boundaries regardless of the specific non-rectangular shape created by the frame.
Data Source
AI summary
A display device comprising a plurality of ordinary pixels, an auxiliary pixel, a frame and a driving chip is provided. The auxiliary pixel includes a plurality of first color sub-pixels. The frame is configured to define an active area in a non-rectangular shape. The plurality of ordinary pixels and the auxiliary pixel are arranged in the active area. The driving chip is configured to receive display data, wherein the display data includes a first color grayscale value configured to assign first target luminance of first color light of the auxiliary pixel. The driving chip is configured to generate one or more processed first color grayscale values configured to assign the luminance of the plurality of first color sub-pixels, according to the first color grayscale value, and the sum of the luminance of the plurality of first color sub-pixels is substantially equal to the first target luminance.