Pen Tile OLED Pixel Column Data Line Reduction
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Solution Overview
Problem
The increasing demand for higher resolution in organic light-emitting display devices leads to increased manufacturing costs and power consumption due to the need for more data lines, scan lines, and circuits.
Innovation Solution
The organic light-emitting display device employs a Pen Tile structure with alternating pixel columns of different colors, where pixels connected to the same data line share a single data voltage, reducing the number of data lines and circuits required, and uses a data voltage output unit with a switching circuit and buffer to selectively apply pixel data voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of pixels is increased to improve display resolution, then display resolution is improved, but the number of data lines, scan lines, and circuits increases leading to higher manufacturing costs and power consumption
Solution Approach 1:
Multiple pixel columns (first, second, and third pixel columns with different color emissions) are merged and connected to the same data line. Specifically, the second pixels of the first and second pixel columns are connected to the same data line, allowing these pixels to share a common data voltage supply, thereby reducing the total number of data lines required while maintaining high display resolution
Solution Approach 2:
The data line is designed with multi-functionality to serve multiple pixel columns simultaneously. The same data line provides data voltages to different pixel types (first and second pixels emitting different colors) across multiple columns, making the data line a universal connection that reduces overall circuit complexity while supporting high-resolution display
2Measurement precision
If the number of data lines and circuits is increased to support more pixels, then display resolution is improved, but manufacturing costs increase
Solution Approach 1:
The patent merges multiple pixel columns into shared data line connections, reducing the total number of data lines and circuits required. This consolidation directly lowers manufacturing costs by reducing the number of components that need to be fabricated and assembled, while still achieving high display resolution through efficient pixel arrangement
Solution Approach 2:
The patent introduces a third pixel column between the first and second pixel columns in the matrix arrangement. This dimensional reorganization allows for more efficient space utilization and enables shared data line connections across multiple columns, reducing the overall circuit count and manufacturing complexity while maintaining high resolution
3Measurement precision
If the number of data lines and circuits is increased to support more pixels, then display resolution is improved, but power consumption increases
Solution Approach 1:
By merging multiple pixel columns into shared data line connections, the patent reduces the total number of active circuits and data lines that require power supply. This consolidation directly reduces the overall power consumption of the display device while maintaining the ability to drive high-resolution pixel arrangements efficiently
Data Source
AI summary
A display device has first and second pixel columns and at least one third pixel column. The first pixel column includes first pixels to emit light of a first color and a second pixels to emit light of a second color alternately arranged in a first direction. The second pixel column includes the first pixels and the second pixels arranged in the first direction in a reverse order from the first pixel column. The at least one third pixel column includes third pixels to emit light of a third color and arranged in the first direction. The first and second pixel columns are alternately arranged in a second direction crossing the first direction. The third pixel column is between the first and second pixel columns. The second pixel of the first pixel column and the second pixel of the second pixel column are connected to a same data line.