Dual-Panel Display Electrical Connection Using Conductive Fluid
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Solution Overview
Problem
Existing display devices with a dual-panel configuration suffer from low connection reliability and operation stability due to separation of TFTs and second electrodes under stress, leading to potential breakage and reduced electrical connectivity.
Innovation Solution
A display device design featuring a conductive fluid between substrates to maintain electrical connection between switching elements and second electrodes, using a conductive fluid with low electrical resistivity to ensure stable operation even under stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electrical-linking pattern is used to connect TFTs and second electrodes in a dual-panel display device, then electrical connection can be established, but the connection reliability deteriorates due to separation under stress
Solution Approach 1:
A conductive member extending from the drain electrode toward the second electrode, combined with a conductive fluid filling the space between substrates, serves as an intermediary electrical connection path. This mediator maintains electrical connectivity even when the rigid electrical-linking pattern separates from electrodes under stress, resolving the contradiction between establishing electrical connection and maintaining connection reliability under deformation
Solution Approach 2:
The invention changes the physical state of the connection medium from solid (rigid electrical-linking pattern) to fluid (conductive liquid or gel). This parameter change allows the connection medium to maintain electrical conductivity while adapting to substrate deformation, preventing separation and maintaining reliable electrical connection between TFTs and second electrodes under stress
2Reliability
If a rigid electrical-linking pattern is used for electrical connection, then connection can be established, but operation stability deteriorates due to breakage risk under stress
Solution Approach 1:
The conductive fluid acts as a flexible connection medium that can deform with the substrate without breaking. Unlike rigid electrical-linking patterns that are prone to fracture under stress, the fluid maintains its conductive path through deformation, significantly improving operation stability and resistance to breakage
Solution Approach 2:
Using a conductive fluid (liquid or gel) instead of a solid rigid connector allows the electrical connection to accommodate substrate deformation through fluid displacement and flow. This hydraulic approach eliminates the brittleness of rigid patterns and prevents breakage under stress, enhancing operation stability
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 conductive fluid ensures high reliability and stability of electrical connections, preventing breakage and crosstalk between pixels, thereby enhancing overall operation stability.
Implementation Method 1
The conductive fluid electrically connects the switching element and the second electrode
Data Source
AI summary
A display device with high operation stability is provided. The display device comprises a first substrate, a second substrate, and a conductive fluid. The first substrate has a first insulating plate and a switching element. The switching element is formed on the first insulating plate. The second substrate has a second insulating plate, a first electrode, a light-emitting layer, and a second electrode. The second insulating plate faces the first insulating plate. The first electrode is formed on the second insulating plate. The light-emitting layer is formed on the first electrode. The second electrode is formed on the light-emitting layer. The second electrode faces the switching element. The conductive fluid is disposed between the first substrate and the second substrate. The conductive fluid electrically connects the switching element and the second electrode.