Display Panel Hole-Through Substrate Connection for Narrow Border
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Solution Overview
Problem
Current display devices face challenges in achieving a narrow border region due to inefficient circuit arrangement in the border areas, which hinders their compactness and thinness.
Innovation Solution
The implementation of a display panel design featuring a substrate with a hole that overlaps a sealing layer, allowing a connecting element to bridge the conductive and circuit layers, thereby reducing the border width and potentially eliminating it altogether by optimizing the placement of conductive and circuit layers on opposite surfaces of the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If circuit arrangement is optimized in border region, then border width is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent moves the connection hole from the traditional side border region to the top border region, utilizing a different spatial dimension for circuit connection. This dimensional shift allows the conductive layer and circuit layer to connect through the substrate thickness direction, effectively reducing the visible side border width while maintaining functional connectivity through the top border area.
Solution Approach 2:
The connection structure is divided into distinct segments: a connection hole penetrating the substrate, a conductive layer on one surface, and a circuit layer on the opposite surface. This segmentation allows independent optimization of each component's position and function, enabling the border width reduction while managing manufacturing complexity through modular design.
2Length of stationary object
If connection hole overlaps sealing layer, then border width is minimized, but manufacturing precision requirements increase
Solution Approach 1:
The connection hole is merged with the sealing layer structure, where the hole passes through the substrate and the sealing layer is positioned to seal around the hole. This merging allows the sealing function and the connection function to be integrated in the same spatial region, minimizing border width while the sealing layer itself provides a reference structure for maintaining positioning precision.
Solution Approach 2:
The sealing layer acts as an intermediary element between the connection hole and the external environment. It provides a sealing barrier while also serving as a structural reference that helps maintain the hole's positioning precision, thus reducing border width without proportionally increasing manufacturing difficulty.
3Length of stationary object
If conductive layer and circuit layer are placed on opposite surfaces, then border region is reduced, but device complexity increases
Solution Approach 1:
The patent utilizes the thickness dimension of the substrate to separate the conductive layer and circuit layer onto opposite surfaces. Instead of arranging them side-by-side in the plane (which would increase border width), the solution moves them along the vertical dimension, connecting them through the connection hole. This dimensional reorganization reduces border region width while the layered structure manages the increased device complexity.
Data Source
AI summary
A display panel used for coupling to another display panel in a side by side manner is disclosed, which includes: a first substrate, including a first hole, a first surface and a second surface opposite to the first surface; a first conductive layer disposed on the first surface of the first substrate; a first circuit layer disposed on the second surface of the first substrate; a first connecting element disposed in the first hole and connecting the first conductive layer and the first circuit layer; and a first sealing layer disposed on the first conductive layer, wherein the first hole at least partially overlaps the first sealing layer. In addition, a display device comprising two display panels disposed adjacent to each other is also disclosed.