Silicon-Based OLED Panel Sub-Pixel Arrangement for High Density
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Solution Overview
Problem
Conventional OLED display panels face challenges in achieving high resolution and low power consumption while maintaining brightness, due to limitations in pixel density and driving circuit complexity.
Innovation Solution
A silicon-based OLED display panel with a matrix arrangement of sub-pixels of the same color, integrated with a driving circuit comprising transistors and capacitors, allows for efficient gray scale control through sequential input of working gray scale level signals, reducing the area occupied by pixel units and increasing pixel density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional OLED display panels use traditional pixel arrangements and driving circuits, then the structure is simpler to manufacture, but the pixel density is low and resolution is limited
Solution Approach 1:
The display panel divides pixels into multiple pixel islands, with each pixel island containing multiple sub-pixels of the same color. This segmentation allows for higher pixel density while using simpler driving circuits, as each pixel island can be controlled independently with fewer transistors per sub-pixel compared to traditional approaches.
Solution Approach 2:
The patent arranges sub-pixels of the same color within pixel islands and combines them with sub-pixels from adjacent pixel islands to form complete pixels. This spatial reorganization in multiple dimensions enables higher effective pixel density without proportionally increasing driving circuit complexity, as the driving circuits are shared across multiple sub-pixels within each pixel island.
2Measurement precision
If more transistors are used per sub-pixel for gray scale control, then gray scale precision is improved, but power consumption increases
Solution Approach 1:
Multiple sub-pixels of the same color within a pixel island share common driving circuit elements, including transistors and capacitors. This merging reduces the total number of transistors required per sub-pixel, thereby lowering power consumption while maintaining gray scale precision through the shared circuit architecture and sequential gray scale input method.
Solution Approach 2:
The patent employs a sequential gray scale input method where gray scale levels are applied in multiple steps over time rather than all at once. This periodic action allows for precise gray scale control with fewer transistors, as the sequential updating reduces the simultaneous current requirements and overall power consumption compared to traditional methods that require more transistors for instantaneous gray scale control.
3Reliability
If pixel units occupy larger area for circuit integration, then driving circuit functionality is complete, but the display area is reduced
Solution Approach 1:
The driving circuits within each pixel island are designed to control multiple sub-pixels simultaneously. Each pixel island's driving circuit serves as a universal controller for all sub-pixels within that island, reducing the total circuit area required. This multi-functionality allows complete driving circuit functionality to be achieved with smaller overall area, maximizing the display area.
Solution Approach 2:
The patent integrates driving circuit elements within the pixel island structure itself, nesting the circuits among the sub-pixels they control. This nesting approach minimizes the area occupied by driving circuits by placing them within the same spatial footprint as the sub-pixels, rather than requiring separate dedicated circuit areas, thereby maximizing the effective display area.
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 configuration enhances resolution, reduces power consumption, and improves brightness by allowing for compact sub-pixel arrangement and efficient gray scale superimposition, achieving high pixel density and efficient display performance.
Implementation Method 1
a second electrode of the second transistor is connected to a first electrode of an organic light emitting diode to be driven
Data Source
AI summary
A display panel includes: a plurality of light emitting signal lines. Under a control of switching signals provided from a plurality of switching signal lines and control signals provided from a plurality of control signal lines, working gray scale level signals corresponding to respective display gray scales are written to corresponding sub-pixels in an order from small to large in working gray scale sequentially by a plurality of times in one frame display time through the plurality of light emitting signal lines. Different working gray scale level signals indicate have different durations, and each of the working gray scale level signals is provided to the organic light emitting diode via the second transistor through a light emitting signal line, and a final display gray scale is a gray scale caused by superimposing different working gray scale level signals.