Display Panel Demultiplexer Sub-Pixel Borrowing
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Solution Overview
Problem
Existing liquid crystal display (LCD) products face issues with sub-pixel borrowing, which affects the stability of display quality when high pixel density is required, and sub-pixels in stripe arrangements are constrained by process equipment, limiting their dimensions and increasing the difficulty of driving the display panel.
Innovation Solution
A display panel design with pixel units comprising at least three sub-pixels of different colors, each connected to a shared scan line and different data lines, and the use of 1:2 demultiplexers to transmit data signals, allowing for efficient data distribution and sufficient charging time for each sub-pixel, reducing the need for sub-pixel borrowing and improving stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If sub-pixel rendering technology is employed to achieve high pixel density, then the display quality is improved, but sub-pixel borrowing occurs which affects the stability of display quality
Solution Approach 1:
The pixel unit is segmented into multiple independent sub-pixels (first sub-pixel, second sub-pixel, third sub-pixel) with different colors, each connected to separate data lines. This segmentation allows each sub-pixel to be independently controlled without borrowing from neighboring pixels, achieving high pixel density while maintaining display quality stability.
Solution Approach 2:
Demultiplexers are introduced as intermediary components between the data lines and sub-pixels. Each demultiplexer receives data signals and distributes them to different data lines corresponding to different colored sub-pixels, ensuring proper data allocation without sub-pixel borrowing and maintaining stable display quality.
2Ease of manufacture
If stripe arrangement of sub-pixels is used, then the manufacturing process is simplified, but the sub-pixel dimensions are constrained by process equipment
Solution Approach 1:
The patent transitions from symmetric stripe arrangements to an asymmetric configuration where sub-pixels of different colors are arranged in a specific pattern within the pixel unit. The first, second, and third sub-pixels are positioned to form a compact arrangement that optimizes both manufacturing feasibility and dimensional precision, breaking the conventional symmetric stripe constraint.
3Reliability
If the number of data lines is increased to serve more sub-pixels, then the data signal distribution is improved, but the driving complexity increases
Solution Approach 1:
The demultiplexers serve multiple functions: they receive data signals from data lines, distribute them to appropriate sub-pixels, and enable time-division multiplexing of data transmission. This multi-functionality allows efficient data signal distribution to multiple sub-pixels without proportionally increasing the number of data lines or driving complexity.
Data Source
AI summary
A display panel and a display apparatus, in the display panel, a pixel unit includes a plurality of sub-pixels, the sub-pixels in a same pixel unit are electrically connected to a same scan line and are each electrically connected to different data lines/the display panel further includes demultiplexers, each demultiplexer includes two output terminals connected to different data lines, and is configured to transmit data signals to different data lines. The plurality of sub-pixels of the same pixel unit include at least three sub-pixels with different colors. Accordingly, the pixel units need not to borrow sub-pixels from each other while achieving full-color display of the display panel, which is conducive to improving the stability of display quality, using 1:2 demultiplexers to transmit data signals to sub-pixels ensures that each sub-pixel has sufficient charging time, thereby being conducive to ensuring the display quality of the display panel.