Overlapping Display Panels with Transparent Regions for Seamless Visual Output
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Solution Overview
Problem
Existing display devices face challenges in increasing size while minimizing thickness and weight, maintaining high reliability, and reducing visible seams between panels, especially when displaying images on curved surfaces or with high pixel density.
Innovation Solution
A display device comprising multiple overlapping display panels, where one panel has a region that transmits visible light and another that blocks light, with strategically arranged pixels and transistors to ensure seamless image display and minimize non-display regions, using a combination of single-gate and dual-gate transistors and adjusting pixel sizes to accommodate misalignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display panels are arranged to increase display size, then the display area increases, but visible seams and joints between panels become more prominent
Solution Approach 1:
The patent introduces a third display region that overlaps in the vertical dimension between the first and second display regions. This overlapping arrangement in the vertical direction allows the panels to be stacked such that the third display region of one panel is visible through the transparent region of the panel above it, creating a seamless visual effect that eliminates visible seams while maintaining large display area.
Solution Approach 2:
The patent implements a nested structure where the third display region is positioned within the overlapping area of the first and second display regions. The display panels are arranged in a nested configuration where each panel's display region is partially contained within the vertical projection of adjacent panels, allowing multiple display regions to coexist in a compact, seam-free arrangement.
2Weight of stationary object
If display panels are made thinner and lighter, then portability and aesthetics improve, but structural reliability and durability decrease
Solution Approach 1:
The patent employs composite material structures within the display panels, combining multiple layers including transparent regions, light-emitting elements, and support structures. This composite approach allows the panels to maintain thin profiles and low weight while the distributed layered structure provides enhanced structural integrity and reliability compared to solid monolithic designs.
Solution Approach 2:
The patent divides the display panel into multiple segmented regions including transparent regions, light-emitting regions, and support structures. This segmentation allows each component to be optimized independently for weight and strength, enabling the overall panel to be thinner and lighter while maintaining structural reliability through the distributed nature of the segmented architecture.
3Measurement precision
If pixels are arranged with high density to improve resolution, then image quality increases, but manufacturing complexity and alignment precision requirements increase
Solution Approach 1:
The patent implements a third display region that extends beyond the strict boundaries of the first and second display regions. This excessive action in terms of display region coverage provides a buffer zone that tolerates manufacturing variations and alignment errors, allowing high pixel density to be achieved without proportionally increasing manufacturing precision requirements.
Solution Approach 2:
The patent applies different quality standards to different regions: the first and second display regions maintain high pixel density for image quality, while the third display region in the overlapping area serves as a transition zone with adjusted characteristics. This local differentiation allows high resolution in critical areas while reducing overall manufacturing precision demands.
4Object-generated harmful factors
If display panels are arranged in overlapping configuration to reduce visible joints, then seamlessness improves, but device complexity increases
Solution Approach 1:
The third display region serves multiple functions simultaneously: it fills the gap between the first and second display regions to eliminate visible seams, provides additional display area, and acts as a transition zone that simplifies the overall panel arrangement. This multi-functionality reduces device complexity by consolidating multiple requirements into a single structural element.
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
Enables larger, thinner, and more reliable display devices with reduced visible seams, improved durability by increasing the distance between panel edges and elements, and enhanced light extraction efficiency, suitable for curved surfaces and high pixel density applications.
Implementation Method 1
Light-emitting elements utilizing electroluminescence (also referred to as EL elements) have features such as ease of thinning and lightening, high-speed response to an input signal, and driving with a direct-current low voltage source
Implementation Method 2
The first display panel includes a first display region and a region that transmits visible light
Data Source
AI summary
A display device includes overlapping two display panels. The display panel on the upper side includes a first display region and a region that transmits visible light. The display panel on the lower side includes a second display region and a region that blocks visible light. The second display region overlaps with the region that transmits visible light. The region that blocks visible light overlaps with the first display region. The display panel on the lower side includes a third display region between the second display region and the region that blocks visible light. The gate signal and the source signal supplied to a first pixel in the third display region are the same as the gate signal and the source signal supplied to a second pixel in the second display region. The second pixel is closer to the first pixel than any other pixels included in the second display region.