Array Substrate Extension Electrode for Seamless Display Borders
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Solution Overview
Problem
Conventional display panels with non-display areas (borders) create an obvious border design that affects user experience due to the need for packaging modules, making them unsuitable for seamless integration in applications like In-Mold Electronics (IME).
Innovation Solution
Incorporating an extension electrode in the peripheral area of the array substrate and display structure with a thickness less than 20 microns, allowing the peripheral area to control the display medium and match image displays, thus customizing the border color for a consistent presentation without visible seams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a non-display area (border) is reserved for packaging modules, then the display panel can be properly packaged and assembled, but an obvious border design appears that affects user experience and creates visible seams
Solution Approach 1:
The peripheral area is equipped with extension electrodes that enable it to control the display medium, transforming it from a non-functional border region into an active display area capable of presenting images and colors, thus serving dual purposes of packaging and display
Solution Approach 2:
The thickness of the extension electrode is controlled to be less than 20 microns, changing the physical parameter of electrode thickness to ensure the peripheral area maintains visual consistency with the active display area, eliminating visible seams
2Device complexity
If the peripheral area is left as a non-display area, then the structure is simple and easy to manufacture, but it cannot present images or colors matching the main display area
Solution Approach 1:
The peripheral area is equipped with extension electrodes that enable it to control the display medium, transforming it from a non-functional border region into an active display area capable of presenting images and colors, thus serving dual purposes of packaging and display
Solution Approach 2:
The extension electrode is designed and positioned in advance in the peripheral area, enabling the display medium in the border region to be controlled and matched with the main display area before final assembly, achieving a borderless effect
Data Source
AI summary
An array substrate includes a substrate, a gate line, multiple active elements, a protective layer, a pixel electrode, and an extension electrode. The substrate has an active area and a peripheral area. The gate line and the active elements are disposed in the active area of the substrate. The protective layer is disposed on the substrate and covers the gate lines and the active elements. The protective layer has multiple openings-exposing a portion of the gate line and a portion of the active elements. The pixel electrode is extended to and disposed in the openings of the protective layer to electrically connect to the gate line and the active elements. The extension electrode is disposed in the peripheral area and located on the protective layer. A portion of the extension electrode is extended to and overlapped with the pixel electrode and is electrically connected to the pixel electrode.