OLED Display Panel Signal Line Sharing for Narrow Bezel Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the field of OLED displays, the rapid development of high-resolution products poses challenges for yield, cost control, and the realization of narrow bezels due to increased pin counts on circuit boards, which lead to smaller bonding regions, higher costs, reduced sub-pixel unit areas, and voltage drops causing uneven displays.
Innovation Solution
The display panel design reduces the number of data lines by sharing signal lines, such as gate lines and data lines, and incorporates an auxiliary cathode line to decrease resistance and prevent voltage drops, thereby improving yield, reducing costs, and facilitating narrow bezels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of data lines is increased to support higher resolution, then the resolution is improved, but the bonding region area is reduced and cost increases
Solution Approach 1:
The patent merges the function of multiple data lines into a single shared data line by implementing a time-division multiplexing scheme where sub-pixel units are driven in different time periods. This allows the same data line to serve multiple sub-pixel units sequentially, reducing the total number of data lines required and thereby increasing the bonding region area.
2Measurement precision
If the number of data lines is increased to support higher resolution, then the resolution is improved, but production cost increases
Solution Approach 1:
The patent combines multiple data line functions into fewer physical lines through time-division multiplexing, reducing the number of pins required on the circuit board. This directly reduces production costs associated with high-pin-count interconnects and complex bonding processes.
3Measurement precision
If the number of data lines is increased to support higher resolution, then the resolution is improved, but the sub-pixel unit area is reduced
Solution Approach 1:
The patent segments the driving process into different time periods, where different groups of sub-pixel units are driven at different times. This temporal segmentation allows fewer data lines to serve more sub-pixel units, enabling larger sub-pixel unit areas while maintaining high resolution through the combined effect of multiple sub-pixels working in sequence.
4Area of stationary object
If power supply voltage lines are extended to cover larger areas, then the coverage is improved, but voltage drops increase causing uneven displays
Solution Approach 1:
The patent segments the array into multiple sub-pixel unit groups that are driven in different time periods. This allows the use of shorter power supply voltage lines for each group, reducing the length and thereby minimizing voltage drops. Each group receives stable power supply voltage, ensuring display uniformity across the entire panel.
5Adaptability or versatility
If the number of pins on circuit board is increased, then the connectivity is improved, but the bonding region area is reduced
Solution Approach 1:
The patent implements multi-functionality in the data lines by allowing a single data line to serve multiple sub-pixel units at different time periods. This universal usage pattern reduces the total number of pins required on the circuit board, thereby increasing the bonding region area while maintaining full connectivity to all sub-pixel units.
Data Source
AI summary
A display panel and a display device are disclosed. The display panel includes a plurality of sub-pixel units arranged in an array, and the array includes N rows and 8M columns. Sub-pixel units in each row are divided into a plurality of sub-pixel unit groups, and each sub-pixel unit group includes a first sub-pixel unit, a second sub-pixel unit, a third sub-pixel unit, a fourth sub-pixel unit, a fifth sub-pixel unit, a sixth sub-pixel unit, a seventh sub-pixel unit and an eighth sub-pixel unit which are sequentially in eight adjacent columns along a first direction.