OLED Display Panel Shared Subpixel Arrangement
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Solution Overview
Problem
Traditional RGB pixel arrangements in OLED display panels struggle to meet increasing resolution demands, leading to greater process difficulty and energy loss due to the need for multiple evaporation steps and closer sub-pixel spacing.
Innovation Solution
A new RGB sub-pixel arrangement method where pixel units share one or two color sub-pixels to form three primary color pixel units, reducing the overall number of sub-pixels and increasing the distance between them, allowing for higher resolution displays with improved aperture ratios and reduced preparation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional RGB pixel arrangement is used, then each pixel unit contains all three color sub pixels, but the distance between sub pixels becomes smaller and resolution requirement cannot be met
Solution Approach 1:
The display panel is divided into different types of pixel units (first type with 3 sub pixels, second type with 2 sub pixels, third type with 1 sub pixel). This segmentation allows some pixel units to have fewer sub pixels, increasing the distance between adjacent sub pixels and improving manufacturability while maintaining overall resolution through the alternating pattern.
2Manufacturing precision
If traditional RGB pixel arrangement is used, then all sub pixel units are arranged in matrix, but the preparation process becomes more complex with multiple evaporation steps
Solution Approach 1:
Adjacent pixel units of different types are merged to form super pixel units that collectively contain all three color sub pixels. This merging approach allows the use of fewer evaporation steps (first evaporation for common layers, second evaporation for remaining sub pixels) while still achieving full-color display capability, thereby reducing preparation process complexity.
3Manufacturing precision
If color filter method is used, then resolution and area preparation problems are solved, but energy loss increases and power consumption rises
Solution Approach 1:
The invention extracts and removes the color filter layer from the display structure, replacing it with organic light-emitting materials that directly emit colored light. This extraction eliminates the energy loss associated with light filtering, reducing power consumption while maintaining resolution capability through the novel pixel arrangement.
4Manufacturing precision
If sub pixel distance is reduced to meet resolution demands, then resolution improves, but process difficulty increases
Solution Approach 1:
The invention introduces dynamic variation in pixel unit composition, alternating between different types of pixel units (with 1, 2, or 3 sub pixels) in a systematic pattern. This dynamic arrangement allows the sub pixel distance to be optimized for manufacturability in certain regions while maintaining overall high resolution through the alternating pattern, effectively balancing resolution and process difficulty.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The new sub-pixel arrangement enhances display quality by increasing resolution and reducing process difficulty, while minimizing energy loss and power consumption.
Implementation Method 1
each of the sub pixel units includes a display region and a non-display region. In particular, the display region of each of the sub pixel units includes a cathode, an anode and an electroluminescent layer (an organic emission layer), wherein the electroluminescent layer is located between the cathode and the anode to generate light with predetermined color
Data Source
AI summary
The present disclosure discloses an Organic Light Emitting Diode (OLED) display panel including pixel units arranged in a array, the pixel units arranged in a array divided into a plurality of same pixel blocks, and the pixel blocks including a first to a fourth column sub pixels which are arranged and combined to form a first to a third column pixel units; wherein the first column sub pixels are disposed in the first column pixel units, the second and the third column sub pixels are disposed in the second column pixel units, and the fourth column sub pixels are disposed in the third column pixel units; each pixel unit of the second column pixel units is provided with three color sub pixels; and each pixel unit of the first and the third column pixel units is only provided with one or two of three color sub pixels.