Dual-Surface Display Pixels with Transparent Data Lines
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Solution Overview
Problem
Current display devices, particularly organic light emitting display devices, face challenges in simultaneously displaying images on both front and rear surfaces effectively, as they often require complex configurations and may suffer from reduced transmittance due to overlapping components.
Innovation Solution
A display device design featuring separate pixels for front and rear image display, with distinct scan and data lines, and driving elements that allow independent operation of each pixel array, enabling the display of individual images on both surfaces without compromising transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate pixels and driving circuits are provided for front and rear image display, then independent display capability is improved, but device complexity increases
Solution Approach 1:
The display device is segmented into first pixels for front image display and second pixels for rear image display, with separate driving circuits and scan lines for each pixel type. This segmentation enables independent display capability while maintaining manageable complexity through modular architecture.
Solution Approach 2:
The patent introduces a spatial dimension by arranging first and second pixels in alternating rows, with first scan lines connecting to first pixels and second scan lines connecting to second pixels. This dimensional arrangement allows independent control of front and rear display surfaces without requiring complete duplication of all components.
2Productivity
If data lines extend through second pixel area, then routing efficiency is improved, but transmittance decreases
Solution Approach 1:
The patent applies local quality by making data lines transparent in the second pixel area where they extend through, while maintaining opaque properties in other regions. This allows data lines to serve dual purposes: providing electrical connections and maintaining light transmittance in specific locations, thus resolving the conflict between routing efficiency and transmittance.
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 allows for independent display of images on the rear and front surfaces, enhancing display capabilities while maintaining effective light transmission, thus overcoming the limitations of existing technologies.
Implementation Method 1
The organic light emitting display device displays the image using an organic light emitting element that emits light by recombination of electrons and holes
Implementation Method 2
a first light emitting diode disposed in a first pixel area, and driven by the first driving element
Data Source
AI summary
A display device includes first pixels which displays a front image, second pixels which displays a rear image, scan lines extending in a first direction and connected to the first and second pixels, and data lines extending in a second direction crossing the first direction and connected to the first and second pixels. The data lines extend via the second pixels.