Tiled Display Reflectance Matching for Hidden Panel Seams
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Solution Overview
Problem
Large-sized display devices face increased defective rates and reduced productivity due to the number of pixels, leading to a seam or non-display area between connected display devices, which disrupts the immersive experience by creating a disconnection in the image display.
Innovation Solution
A tiled display device design incorporating a first and second display substrate with light emitting areas, a coupling member, and a color conversion substrate with light transmitting and blocking areas, which minimizes the visibility of seams by ensuring the external light reflectance of display and non-display areas is uniform, thereby preventing the boundary between devices from being visually recognized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display devices are connected to form a large-sized display, then the screen size is increased, but the boundary portion between devices becomes visually recognizable causing disconnection appearance
Solution Approach 1:
The patent applies local quality by making the non-display area have the same light reflectance characteristics as the display area. Specifically, the non-display area is designed to reflect external light with the same intensity and color as the display area, creating a uniform visual appearance across the entire tiled display surface. This local modification of optical properties eliminates the visual boundary between adjacent display devices.
Solution Approach 2:
The patent utilizes color changes by adjusting the light reflectance properties of the non-display area to match the display area. The non-display area is treated or coated to reflect external light in the same wavelength range and intensity as the display area, making it visually indistinguishable from the active display regions. This color matching technique effectively hides the boundaries between tiled displays.
2Object-generated harmful factors
If the non-display area is made smaller to reduce the seam visibility, then the boundary becomes less noticeable, but the manufacturing precision requirements increase
Solution Approach 1:
The patent applies homogeneity by making the optical properties of the display area and non-display area identical. Both areas are designed to reflect external light with the same intensity, color, and angular characteristics. This homogeneous optical design eliminates the need for precise alignment and small non-display areas, as the entire surface appears uniform regardless of the physical boundaries between tiles.
3Productivity
If the display area is increased to improve productivity, then the number of pixels increases leading to higher defective rates
Solution Approach 1:
The patent applies segmentation by dividing the large display into multiple smaller display devices that are tiled together. Each individual display device maintains a manageable size with acceptable defective rates, while the combined tiled structure achieves the desired large screen area. The segmentation is made visually imperceptible through the light reflectance matching of non-display areas, allowing high productivity without compromising reliability.
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 effectively removes the appearance of disconnection between display devices, enhancing the immersive experience by ensuring the boundary portion or non-display area is not visually recognized, thus improving the overall image immersion.
Implementation Method 1
a color conversion substrate including a plurality of light transmitting areas corresponding to the plurality of light emitting areas of each of the first display substrate and the second display substrate, and a plurality of light blocking areas between the plurality of light transmitting areas and corresponding to the one or more banks or the coupling member
Implementation Method 2
a plurality of light blocking areas between the plurality of light transmitting areas and corresponding to the one or more banks or the coupling member
Implementation Method 3
a coupling member coupling the first display substrate and the second display substrate
Data Source
AI summary
A tiled display device includes a first display substrate including a plurality of light emitting areas defined by one or more banks, a second display substrate adjacent to the first display substrate and including a plurality of light emitting areas, a coupling member coupling the first display substrate and the second display substrate, and a color conversion substrate including a plurality of light transmitting areas corresponding to the plurality of light emitting areas of each of the first display substrate and the second display substrate, and a plurality of light blocking areas between the plurality of light transmitting areas and corresponding to the one or more banks or the coupling member.