OLED Display Pixel Segmentation for Single-Pixel Dot Rendering
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Solution Overview
Problem
OLED display devices face challenges in effectively displaying single pixel dot images or single pixel line images due to limitations in the Sub-Pixel Render (SPR) algorithm, leading to issues like color shifts, jaggedness, and uneven brightness, especially when displaying detailed patterns or edges.
Innovation Solution
A display device with a specific arrangement of screen pixels, including first, second, and third sub-screen pixels, alternately arranged in rows and columns, where the driving circuit controls the display by determining detail pixels and edge pixels, adjusting brightness, and using luminosity efficiently to improve image clarity and reduce jaggedness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the SPR algorithm is used for sub-pixel rendering in OLED display devices, then the display can achieve high definition and color accuracy for general images, but it cannot effectively display single pixel dot images or single pixel line images, resulting in color shifts, jaggedness, and uneven brightness
Solution Approach 1:
The invention segments the pixel array into different types (first pixel type with sub-pixels on one side, second pixel type with sub-pixels on another side) and applies different driving strategies to different segments. This allows the display to handle single pixel dot/line images differently from general images, resolving the contradiction between high definition for general images and reliability for specific patterns.
Solution Approach 2:
The invention applies different sub-pixel arrangements and driving methods to different local regions of the display. First pixel types have sub-pixels arranged on one side while second pixel types have sub-pixels arranged on another side, allowing optimized local display quality for single pixel dot/line images in specific regions while maintaining overall high definition performance.
2Adaptability or versatility
If sub-pixels are arranged in a Diamond pixel arrangement with SPR algorithm, then the display achieves high transmittance and flexibility, but the display effect for single pixel dot images or single pixel line images becomes poor with color shifts and jaggedness
Solution Approach 1:
The pixel array is divided into first pixel types and second pixel types with different sub-pixel arrangements. This segmentation allows the display to maintain the flexible Diamond arrangement overall while creating specific regions optimized for precise single pixel dot/line image display, resolving the conflict between flexibility and precision.
Solution Approach 2:
Different local regions have different sub-pixel configurations (first pixel type vs. second pixel type), allowing the display to optimize for specific display scenarios (single pixel dot/line images) in certain regions while maintaining overall structural flexibility and high transmittance characteristics of the Diamond arrangement.
3Ease of manufacture
If the display uses a uniform sub-pixel arrangement for all pixels, then the manufacturing process is simplified, but the display quality for detailed patterns and edges deteriorates with color shifts and uneven brightness
Solution Approach 1:
The display segments pixels into first pixel types and second pixel types with different sub-pixel arrangements. This segmentation enables optimized display quality for detailed patterns and edges by using appropriate pixel types in different regions, while the overall manufacturing process remains relatively simple through standardized pixel structures.
Data Source
AI summary
The present disclosure provides a method for driving a display device and a driver. The method includes obtaining image data, determining whether the image pixels are detail pixels according to the image data, determining a plurality of screen pixel groups, and driving the screen pixels for display.