Display Panel Conductive Film Mediation for Impurity-Resistant Wiring
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Solution Overview
Problem
Existing display technologies face challenges in providing highly convenient and reliable display panels, devices, and systems due to issues such as impurity diffusion and inefficient light transmission, which affect the performance and longevity of display elements.
Innovation Solution
The display panel design includes a specific configuration with a display region, functional layer, insulating films, and conductive films that allow for electrical connections and light transmission while inhibiting impurity diffusion, using materials like nitrogen and silicon films to enhance reliability and convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the display element structure is simplified for ease of manufacture, then manufacturing precision may deteriorate due to impurity diffusion affecting display element performance
Solution Approach 1:
A conductive film is introduced as an intermediary component between the auxiliary electrode and the pixel electrode. This conductive film serves as a mediator that enables electrical connection while preventing impurity diffusion from reaching the display element, thus resolving the contradiction between ease of manufacture and manufacturing precision
Solution Approach 2:
The electrical connection path is segmented into multiple components: auxiliary electrode, conductive film, and pixel electrode. This segmentation allows the conductive film to perform its protective function independently while maintaining the overall electrical connectivity, enabling easier manufacture without compromising precision
2Reliability
If insulating films are added to prevent impurity diffusion, then reliability improves but device complexity increases
Solution Approach 1:
Instead of adding insulating films throughout the entire device structure, the conductive film with specific local properties (conductivity and impurity barrier characteristics) is applied only in the critical region where impurity diffusion would affect the display element. This localized approach improves reliability without significantly increasing overall device complexity
3Manufacturing precision
If multiple layers are added to inhibit impurity diffusion, then manufacturing precision improves but ease of manufacture deteriorates
Solution Approach 1:
The conductive film serves as a single intermediary layer that simultaneously provides electrical conductivity and impurity diffusion barrier functions. This eliminates the need for multiple separate layers (such as insulating films combined with conductive layers), thereby improving manufacturing precision while maintaining ease of manufacture
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 design results in a novel display panel that is highly convenient and reliable, with improved impurity resistance and efficient light emission, enabling enhanced display performance and durability.
Implementation Method 1
the first insulating film includes a region sandwiched between the first conductive film and the second electrode. Thus, the first insulating film can inhibit diffusion of impurities into the display element
Data Source
AI summary
A display panel is provided. The display panel includes a display region, a functional layer, a first insulating film, and a first conductive film; the display region includes a pixel; the pixel includes a display element and a pixel circuit; the display element includes a first electrode and a second electrode; the second electrode includes a first opening portion; the functional layer includes the pixel circuit, a second opening portion, and an auxiliary wiring; the pixel circuit is electrically connected to the display element in the second opening portion; the auxiliary wiring includes a region overlapping with the first opening portion; the first insulating film includes a third opening portion; the third opening portion includes a region overlapping with the first opening portion; and the first conductive film is electrically connected to the second electrode and the auxiliary wiring in the third opening portion.