Multi-Panel OLED Bezel Reduction via Side-Mounted Driving Circuits
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Solution Overview
Problem
Existing OLED display devices face limitations in minimizing the bezel area due to the presence of driving circuits and link lines in the non-active area, which restricts the reduction of the bezel size and visibility of the bezel area between adjacent display panels.
Innovation Solution
A multi-panel OLED device configuration where each display panel includes a base substrate with an active and non-active area, signal lines on the top surface, link lines under the substrate, and side lines on the side surface connecting signal and link lines, with a driving circuit under the substrate, and an encapsulation substrate opposite to the base substrate, allowing for reduced bezel area and seamless pixel alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If driving circuits and link lines are disposed in the non-active area of the display panel, then the display device can be driven and controlled, but the bezel area cannot be minimized
Solution Approach 1:
The patent moves the driving circuits from the planar non-active area to the side surface of the display panel, utilizing the third dimension (vertical space) to resolve the conflict between needing driving circuits and minimizing bezel area. This dimensional transition allows the non-active area to be fully utilized for display purposes while driving circuits are housed in the side profile of the panel.
Solution Approach 2:
The patent introduces side lines as intermediary conductors that extend from the non-active area along the side surface of the display panel to connect with link lines. These side lines serve as mediators that enable electrical connection between the driving circuits (located on the side surface) and the active display area, allowing separation of driving functions from the bezel region.
2Area of stationary object
If multiple display panels are connected to increase display area, then larger screen size is achieved, but visible bezel areas appear between adjacent panels
Solution Approach 1:
The patent merges the non-active area of adjacent display panels by positioning driving circuits on the side surfaces rather than in the non-active areas. This allows the non-active areas of multiple panels to be visually continuous and indistinguishable, creating a seamless appearance when panels are tiled together to form larger displays.
Solution Approach 2:
By relocating driving circuits to the side surfaces (utilizing vertical dimension), the patent eliminates the visual discontinuity that would otherwise appear as bezel lines between horizontally or vertically adjacent panels. The side surface placement allows panel edges to align flushly, making individual panel boundaries imperceptible.
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 configuration reduces the bezel area between display panels, making it invisible to the user and enabling a larger, high-resolution display with uniform pixel spacing, enhancing the display's aesthetic and functional performance.
Implementation Method 1
a display unit including an organic light emitting element disposed on a top surface of the base substrate
Data Source
AI summary
A multi-panel organic light emitting display device is disclosed that includes a plurality of display panels coupled to each other. Each of the plurality of display panels includes: a substrate including an active area and a non-active area; and a display unit including an organic light emitting element on the substrate. Each of the plurality of display panels also includes: a plurality of signal lines disposed on the substrate and electrically connected to the display unit; and a plurality of link lines disposed under the substrate. Each of the plurality of display panels further includes a plurality of side lines connecting the plurality of signal lines and the plurality of link lines. Each of the plurality of display panels also includes a driving circuit electrically connected to the plurality of link lines.