Transparent Display Panel Segmentation for Resolution and Transmittance
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Solution Overview
Problem
There is a tradeoff between achieving high resolution and high transmittance in transparent organic light emitting display devices, making it difficult to implement both simultaneously, and existing solutions either degrade image quality or increase power consumption.
Innovation Solution
A display panel design with distinct regions for low and high resolution, featuring larger transparent windows in low-resolution areas for improved transmittance and smaller pixels in high-resolution areas for enhanced image clarity, along with symmetric and identical length wiring groups to reduce electrical resistance differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the pixel area is increased to improve resolution, then the image quality is improved, but the transmittance of the transparent window decreases
Solution Approach 1:
The display panel is divided into multiple regions with different pixel densities. High-resolution regions contain larger pixels while low-resolution regions contain smaller pixels, allowing the transparent window area to be optimized without compromising overall image quality. This segmentation enables different parts of the display to serve different functional requirements simultaneously.
Solution Approach 2:
Different regions of the display panel are assigned different pixel sizes and densities based on local requirements. The high-resolution region uses larger pixels for better image quality, while the low-resolution region uses smaller pixels to maintain higher transmittance. This local optimization allows each region to perform its specific function effectively.
2Illumination intensity
If the transparent window area is increased to improve transmittance, then the light transmission is improved, but the resolution of the display decreases
Solution Approach 1:
The display is segmented into high-resolution and low-resolution regions, allowing the transparent window to occupy a larger area in the low-resolution region without compromising the overall display resolution. The high-resolution region maintains adequate pixel size for image quality while the low-resolution region maximizes transparent window area for transmittance.
Solution Approach 2:
The patent introduces a spatial dimension by creating multiple regions with different resolutions within the same display panel. This dimensional approach allows simultaneous optimization of transmittance in some areas and resolution in others, resolving the trade-off through spatial differentiation rather than uniform design.
3Ease of manufacture
If uniform pixel sizes are used across the display, then the manufacturing is simplified, but the power consumption increases due to inefficient wiring length variations
Solution Approach 1:
The patent applies local quality by using different pixel sizes in different regions of the display. This allows the wiring length from the data driver to each pixel to be more uniform across the display, reducing variations in electrical resistance and power consumption. The high-resolution and low-resolution regions are designed with pixel dimensions that compensate for their different positions relative to the data driver.
Data Source
AI summary
A display panel is disclosed. The display panel includes a substrate, a plurality of first unit pixel and a plurality of second unit pixel. The substrate includes a first region and a second region extending in a first direction. The plurality of first unit pixels is disposed in the first region of the substrate. The first unit pixel has a first area. The plurality of second unit pixel is disposed in the second region of the substrate. The second unit pixel has a second area which is smaller than the first area.