Overlapping Tiled Display Panels to Hide Bonding Bezels
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Solution Overview
Problem
Tiled display devices have a non-display area between panels that disrupts user immersion due to visible bezels, necessitating a reduction or minimization of this area to enhance the viewing experience.
Innovation Solution
The design incorporates a first display device with a first outer area that emits light without pixels and a second display device with a dummy pixel area, where the second display device outputs light that is transmitted through the first outer area to minimize the non-display area and create a seamless visual experience by overlapping substrates and using wavelength conversion materials to produce white light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display panels are arranged side by side to form a tiled display device, then the display area is increased, but a non-display area (bezel area) appears between the panels which disrupts user immersion
Solution Approach 1:
The patent merges adjacent display panels by making the non-display area of one panel overlap with the display area of the adjacent panel. This overlapping configuration allows the panels to be visually integrated, eliminating the traditional bezel gap and creating a seamless display surface that maintains user immersion while preserving the increased display area.
Solution Approach 2:
The patent transitions from a two-dimensional side-by-side panel arrangement to a three-dimensional overlapping configuration. By stacking panels in an overlapping manner where the non-display area of one panel extends onto the display area of another, the solution adds a vertical dimension to the panel arrangement, effectively eliminating visible bezels while maintaining large display area.
2Object-affected harmful factors
If the non-display area is reduced or minimized, then user immersion is improved, but the structural complexity of the display device increases due to overlapping substrates
Solution Approach 1:
The patent segments the display device into multiple independent panels that can be manufactured separately using standard display manufacturing processes. Each panel maintains its own complete structure with substrate, pixels, and non-display area, allowing for modular assembly through overlapping while keeping individual panel complexity manageable and production feasible.
Solution Approach 2:
The patent implements a nested configuration where the non-display area of one panel is positioned to overlap and partially cover the display area of an adjacent panel. This nesting arrangement allows panels to be stacked in an organized manner, managing structural complexity through systematic layering while achieving the goal of minimized visible non-display areas.
3Object-affected harmful factors
If panels are overlapped in the bonding area, then the non-display area visibility is reduced, but the thickness of the display device increases in the bonding region
Solution Approach 1:
The patent applies local quality by creating a thickness variation across the display device. The bonding area where panels overlap has increased thickness due to the stacked configuration, while the outer display areas maintain standard single-panel thickness. This localized thickness increase is confined to the bonding regions and does not affect the overall device profile in the display areas.
Solution Approach 2:
The patent uses the non-display area of one panel as a structural element that copies the functionality of a support layer, extending it onto the adjacent panel's display area. This copying approach allows the non-display area to serve dual purposes: maintaining its original protective and structural functions while also acting as a visual mask to hide the panel boundaries, thereby reducing external visibility of non-display areas.
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 reduces external visibility of the non-display areas, providing a more immersive viewing experience by ensuring continuous light emission across the tiled display device, even in bonding areas, while maintaining efficient light output and substrate thickness.
Implementation Method 1
a first wavelength conversion material and a second wavelength conversion material, wherein the first wavelength conversion material is configured to convert light of a first color into light of a second color, and wherein the second wavelength conversion material is configured to convert the light of the first color into light of a third color
Data Source
AI summary
A tiled display device includes a first display device including a first pixel, and a second display device coupled to the first display device in a bonding area, including a second pixel, and overlapping the first display device in the bonding area in a plane view.