OLED Super Pixel Modules for Large-Format Displays
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Solution Overview
Problem
Current OLED technologies are limited in their application to large-format displays due to high costs and inefficiencies, particularly in providing bright, high-resolution, and wide viewing angle capabilities, as they rely on smaller display technologies and have inefficient interconnection methods.
Innovation Solution
The development of OLED display modules with a matrix of OLEDs connected in super pixels, where groups of adjacent rows and columns are arranged in parallel, allowing for larger, high-definition displays with reduced active electrical components and improved interconnection from the back, rather than the sides, enabling efficient tiling and reduced bezel size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional LCD technology is used for large-format displays, then manufacturing cost is reduced, but viewing angle and brightness are insufficient
Solution Approach 1:
The display is divided into modular OLED segments that can be individually manufactured and then assembled into large-format configurations. Each module contains complete driving circuitry and can function independently, allowing parallel manufacturing of multiple identical units that are later combined to achieve large display areas with high brightness and wide viewing angles
Solution Approach 2:
The patent transitions from conventional planar LCD architecture to a three-dimensional modular OLED structure where multiple layers and stacking configurations are employed. This dimensional change enables achieving large display areas and high brightness through vertical stacking and multi-layer arrangements rather than relying solely on horizontal expansion
2Productivity
If conventional LCD interconnection methods are used, then manufacturing is simpler, but tiling efficiency is poor and bezel size is larger
Solution Approach 1:
The display system is segmented into independently addressable modular units with standardized connection interfaces. Each module can be manufactured separately and assembled in various configurations, enabling efficient tiling and scaling to different display sizes while maintaining consistent performance characteristics across all modules
Solution Approach 2:
Instead of connecting modules from the sides as in conventional LCDs, the patent implements interconnections from the rear of the modules. This inverted connection approach allows for more compact bezel designs, better heat dissipation, and more flexible tiling arrangements where multiple modules can be stacked or arranged in various patterns with minimized visible seams
3Adaptability or versatility
If OLED technology is used for large-format displays, then brightness and viewing angle are improved, but manufacturing cost increases
Solution Approach 1:
By dividing the large-format display into smaller modular OLED units, the patent enables parallel manufacturing of multiple identical modules using standardized processes. This segmentation allows for economies of scale in module production, reduces the complexity of manufacturing large single-piece OLED displays, and facilitates quality control through modular assembly rather than monolithic production
Solution Approach 2:
The modular OLED design creates universal building blocks that can be configured for various display applications and sizes. The same basic module design serves multiple purposes and can be adapted to different form factors, reducing development costs and enabling a single manufacturing line to produce multiple display configurations, thereby reducing overall manufacturing cost
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
This solution enables the creation of large-format OLED displays with reduced costs and improved resolution, brightness, and viewing angles, while minimizing bezel effects and seam issues between modules, making them suitable for large-scale applications like outdoor and indoor displays.
Implementation Method 1
Organic light-emitting diodes (OLEDs) utilize a layer of organic luminescent material that, when sandwiched between electrodes and subjected to a DC electric current, produces light of a variety of colors (wavelengths)
Data Source
AI summary
LED display modules for large-format displays are disclosed. The LED display module includes a matrix of LEDs, with each LED having an anode and a cathode, and an LED drive circuit having electrical connections defined by rows and columns that electrically connect to the LEDs in the LED matrix. Groups of adjacent rows are arranged in parallel and groups of adjacent columns are arranged in parallel, thereby defining super pixels each having an array of four or more LEDs, wherein the LEDs in a given super pixel cannot be individually activated. The modules can be combined to form the large-format display.