Display Interpolation Pixel Layout for High-Density Wearable Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wearable devices such as HMDs and AR glasses require high-resolution displays to prevent user dizziness, but existing technologies face challenges in efficiently up-scaling pixel arrangements to achieve high pixel density without compromising performance.
Innovation Solution
A display device design that incorporates a pixel group comprising a normal pixel surrounded by interpolation pixels, where the interpolation pixels receive driving currents from adjacent normal pixels, optimizing their emission patterns to enhance up-scaling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a high-resolution display with approximately 3500 PPI is used in wearable devices, then user dizziness is prevented, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The display panel is segmented into normal pixels and interpolation pixels, where normal pixels contain full pixel components (transistor and light-emitting element) and interpolation pixels contain only light-emitting elements that share transistors with adjacent normal pixels. This segmentation allows achieving high effective pixel density (approximately 3500 PPI) while reducing actual pixel component count and manufacturing complexity.
Solution Approach 2:
A single transistor in a normal pixel serves multiple functions by providing driving current to both its associated normal light-emitting element and adjacent interpolation light-emitting elements. This multi-functionality reduces the total number of transistors needed, simplifying the pixel structure while maintaining high display resolution.
2Measurement precision
If interpolation pixels are arranged around normal pixels to achieve up-scaling, then pixel density increases, but emission pattern optimization becomes more difficult
Solution Approach 1:
The emission patterns of interpolation pixels are locally optimized based on their position relative to normal pixels. First interpolation pixels have emission patterns adjacent to second normal pixels, while second interpolation pixels have emission patterns adjacent to first normal pixels. This local quality adjustment ensures proper light distribution and color accuracy without requiring complex global control mechanisms.
3Productivity
If multiple interpolation pixels surround each normal pixel, then up-scaling efficiency improves, but manufacturing precision requirements increase
Solution Approach 1:
Adjacent normal pixels share common interpolation pixels and transistors. For example, a first normal pixel and a second normal pixel both provide driving current to the same interpolation pixels. This merging approach increases up-scaling efficiency by utilizing shared resources while maintaining manageable alignment requirements through standardized pixel geometry.
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 solution achieves improved up-scaling efficiency and higher pixel density, enhancing the display quality of wearable devices like HMDs and AR glasses, reducing dizziness and improving user experience.
Implementation Method 1
organic light-emitting diode (OLED) technology
Data Source
AI summary
According to one or more embodiments, a display device may include a display panel including a pixel group including a normal pixel, and interpolation pixels surrounding the normal pixel, wherein the normal pixel includes a driving transistor, and a normal light-emitting element configured to receive a driving current from the driving transistor, wherein the interpolation pixels include a first interpolation light-emitting element configured to receive a part of a first driving current from a first normal pixel, and a second interpolation light-emitting element configured to receive a part of a second driving current from a second normal pixel, and wherein a first interpolation emission pattern of the first interpolation light-emitting element is adjacent to the second normal pixel, and a second interpolation emission pattern of the second interpolation light-emitting element is adjacent to the first normal pixel.