OLED Array Substrate Data Line Sharing for High-Resolution Displays
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Solution Overview
Problem
High-resolution organic light emitting diode (OLED) display devices face increased costs and design complexities due to the limited space in pixel layouts and the number of data signal lines.
Innovation Solution
The array substrate design includes sub-pixel groups with three color sub-pixels (red, green, and blue) sharing a single data line, reducing the number of data lines and optimizing pixel layout space, which simplifies the design and reduces bonding difficulties while improving yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each sub-pixel is connected to a separate data line, then the data signal transmission is reliable, but the number of data lines increases and pixel layout space is limited
Solution Approach 1:
The patent merges multiple data lines into a single shared data line that serves multiple sub-pixels of different colors (red, green, blue) within the same sub-pixel group. This consolidation reduces the total number of data lines required, thereby increasing pixel layout space while maintaining reliable data signal transmission through the shared line.
Solution Approach 2:
The shared data line performs multiple functions by connecting to and transmitting data signals to multiple different sub-pixels (red, green, and blue sub-pixels) simultaneously. This multi-functional data line replaces what would traditionally require separate dedicated lines for each sub-pixel, optimizing space utilization.
2Device complexity
If the number of data lines is reduced, then the hardware cost decreases and design is simplified, but the data line must serve more sub-pixels
Solution Approach 1:
Multiple data line connections are merged into a single shared data line that serves multiple sub-pixels. This merging simplifies the overall data line configuration and reduces hardware complexity while the shared line maintains adaptability by being able to connect to different sub-pixel types (red, green, blue) within the same group.
Solution Approach 2:
The patent introduces a new dimensional arrangement where sub-pixels of different colors are organized in groups that share common data lines. This spatial reorganization allows the data line to serve multiple functions without increasing complexity, as the shared connection topology is systematically structured.
3Quantity of substance
If sub-pixels of different colors share a data line, then the hardware cost is reduced, but the data line routing becomes more complex
Solution Approach 1:
The patent merges multiple data line routes into a single shared data line that serves multiple sub-pixels of different colors. This consolidation reduces the total quantity of data lines from three separate lines to one shared line per sub-pixel group, thereby reducing hardware costs while the routing complexity is managed through systematic grouping.
Solution Approach 2:
The display is segmented into multiple sub-pixel groups, where each group contains sub-pixels of different colors that share a common data line. This segmentation allows the routing complexity to be localized and managed at the group level, making the overall routing more systematic and less complex than individual dedicated lines for each sub-pixel.
Data Source
AI summary
An array substrate and a display device are provided. The array substrate includes at least one data line and a plurality of sub-pixel groups arranged in an array along a first direction and a second direction. At least one sub-pixel group includes two rows of sub-pixels, one row of the two rows of sub-pixels includes a first color sub-pixel and a second color sub-pixel, and the other row of the two rows of sub-pixels includes a third color sub-pixel; the first color sub-pixel, the second color sub-pixel and the third color sub-pixel in each sub-pixel group are connected to a same data line of the at least one data line.