Display Panel Connection Structure for Narrow-Border Short-Circuit Prevention
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Solution Overview
Problem
The challenge in display technology is to minimize the risk of short circuits between Flexible Circuitry Board (FPC) bump lines and panel wiring, which is exacerbated by the need for narrower borders in mobile devices to enhance the screen-to-body ratio, while ensuring reliable electrical connections and preventing damage to the connection lines during the binding process.
Innovation Solution
A connection structure comprising multiple metal and insulation layers, where the second connection line is formed by at least two metal layers and insulated by multiple layers away from the base substrate, and a binding pin with specific dimensions and materials, along with a detection circuitry to identify short circuits using a light-emitting diode for determining voltage across binding pins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If FPC is bound to reduce border width, then screen-to-body ratio is improved, but risk of short circuit between FPC bump line and panel wiring increases
Solution Approach 1:
The patent transitions from planar wiring to three-dimensional stacked wiring with multiple metal layers (first metal layer, second metal layer, third metal layer) and insulation layers interspersed between them. This vertical stacking allows bump lines and panel wiring to occupy different spatial dimensions, eliminating short circuit risks while enabling narrower borders.
Solution Approach 2:
The connection structure is divided into multiple independent metal layers and insulation layers. Each layer serves a specific function: the first metal layer carries bump lines, the second metal layer carries panel wiring, and the third metal layer provides additional connectivity. This segmentation isolates electrical pathways and prevents interference between adjacent conductors.
2Reliability
If multiple metal layers are used to prevent short circuit, then reliability is improved, but device complexity increases
Solution Approach 1:
The insulation layers serve multiple functions simultaneously: they provide electrical insulation between metal layers, mechanically support the stacked structure, and define the spatial arrangement of conductors. This multi-functionality reduces the need for additional dedicated components, thereby limiting complexity growth.
Solution Approach 2:
The patent combines multiple functions into a single integrated stacked structure where metal layers, insulation layers, binding pins, and detection circuitry are merged into one compact assembly. This consolidation achieves reliable short circuit prevention without proportionally increasing overall device complexity.
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
This solution effectively prevents damage to the connection lines during binding and ensures reliable electrical coupling, reducing impedance and the risk of short circuits, while enabling precise detection of any short circuits, thus enhancing the reliability and efficiency of the display panel manufacturing process.
Implementation Method 1
detection circuitry to identify short circuits using a light-emitting diode for determining voltage across binding pins
Data Source
AI summary
The present disclosure provides a connection structure, a display panel, a manufacturing method, a detection circuitry and a display device. The connection structure includes a connection unit. The connection unit includes a first connection member, a second connection member, and a binding member. The first connection member includes a plurality of first connectors, the second connection member includes a plurality of second connectors, the binding member includes a plurality of binding pins, the connection unit includes a plurality of metal layers and a plurality of insulation layers, the second connector includes a second connection line, the second connection line includes at least two second connection line portions electrically coupled to each other, and at least two insulation layers in the connection unit are arranged on a side of the at least two metal layers away from the base substrate.