Tiled Display Module Interconnection for Zero-Bezel Large Screens
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Solution Overview
Problem
Conventional display devices face challenges in reducing the bezel area, especially when implementing large screens using liquid crystal or organic light emitting display devices, as they are limited by the need for sealants and encapsulation, which can lead to visible boundaries between adjacent panels in tiled configurations.
Innovation Solution
A display device design featuring a support substrate with link lines, flexible films, and connection members that electrically connect signal lines, allowing for a seamless integration of display modules without visible boundaries, enabling a zero-bezel, large-screen implementation suitable for transparent displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple display panels are tiled together to implement a large screen, then the screen size is increased, but visible boundaries between adjacent panels appear
Solution Approach 1:
A support substrate is introduced as an intermediary component between multiple display modules. The support substrate provides a common mounting platform that enables precise alignment and seamless integration of adjacent display modules, eliminating visible boundaries while maintaining the ability to implement large screen sizes through modular tiling.
Solution Approach 2:
Multiple display modules are merged into a unified large-screen display system by mounting them on a common support substrate. The connection members electrically connect adjacent display modules while the support substrate structurally integrates them, creating a seamless visual output that appears as a single unified display surface.
2Reliability
If sealant and encapsulation are used in liquid crystal display devices, then the liquid crystals are protected, but the bezel area cannot be reduced
Solution Approach 1:
Flexible films are used to provide protection and sealing for the display modules while maintaining a thin profile. These flexible protective layers can conform to the display module edges without requiring thick rigid bezels, enabling reduced bezel area while maintaining protection of internal components.
3Reliability
If encapsulation is disposed to protect organic light emitting elements, then reliability is improved, but the bezel area cannot be reduced
Solution Approach 1:
Flexible encapsulation films are used to protect organic light emitting elements from moisture and oxygen while maintaining a thin profile. These films provide the necessary protection without requiring thick rigid encapsulation structures that would increase bezel area, enabling both high reliability and reduced bezel dimensions.
4Reliability
If connection members are disposed between the support substrate and display modules, then electrical connection is achieved, but manufacturing complexity increases
Solution Approach 1:
The connection members are designed to automatically align and connect with corresponding contact pads on the display modules during the mounting process. This self-aligning mechanism reduces the precision requirements for manual positioning and simplifies the manufacturing process, making the electrical connection step more straightforward despite the additional component.
Data Source
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AI summary
Provided is a display device (100). The display device (100) comprises a support substrate (121), a plurality of link lines (LL) disposed on the support substrate (121), a plurality of first flexible films (161) disposed on one side of the support substrate (121) and electrically connected to the plurality of link lines (LL), a plurality of display modules (110) disposed on or under the support substrate (121) and including a plurality of pixels (P) and a plurality of signal lines and a plurality of connection members (190) disposed between the support substrate (121) and the plurality of display modules (110) and electrically connecting the plurality of link lines (LL) and the plurality of signal lines. Therefore, A display device with a large screen can be provided.