OLED Anode Grooves for Metal Mesh Light Extraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing OLED display panels face issues with non-uniform light extraction due to the metal mesh structure blocking light, leading to poor display uniformity and effectiveness.
Innovation Solution
Incorporating grooves on the edges of anodes within the display panel, where the orthographic projection of the grooves opposes the openings in the metal mesh structure, to reduce light reflection and enhance light extraction uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal mesh structure is used in the touch layer, then touch sensitivity and display coverage are improved, but light extraction uniformity deteriorates due to light blocking
Solution Approach 1:
The anode structure is modified locally by adding grooves at specific positions where metal lines are located. This local modification creates corresponding recesses that reduce light blocking at critical areas while maintaining the overall metal mesh structure for touch functionality.
Solution Approach 2:
The solution moves from a two-dimensional metal mesh structure to a three-dimensional structure by adding grooves (depth dimension) to the anode. This vertical dimension allows light to pass through more effectively while maintaining the horizontal metal mesh pattern for touch sensing.
2Ease of operation
If metal lines are added to the touch layer for touch sensing, then touch interaction is improved, but light transmission is reduced
Solution Approach 1:
The anode is segmented by creating grooves that divide the continuous metal layer into regions. This segmentation allows light to pass through the groove areas while the metal lines remain in place for touch sensing, effectively separating light transmission and touch interaction functions.
Solution Approach 2:
The groove structure acts as an intermediary element between the metal lines and the light path. It provides a transition zone that allows light to bypass the metal lines' blocking effect while maintaining the metal mesh structure for touch functionality.
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 improves light extraction uniformity and display effectiveness by minimizing light blockage and scattering, resulting in a more consistent and efficient light output across the display panel.
Implementation Method 1
reduce light reflection and enhance light extraction uniformity
Data Source
AI summary
A display panel includes a display substrate and a touch layer. The display substrate includes a substrate and an anode layer. The anode layer includes a plurality of anodes, and at least one edge of at least one anode is provided with at least one groove therein. The touch layer is located on a light exit side of the display substrate. The touch layer includes a metal mesh structure, the metal mesh structure includes a plurality of first metal lines, and each first metal line includes an opening. An orthographic projection of each of the plurality of first metal lines on the substrate is located between orthographic projections of the plurality of anodes on the substrate. An orthogonal projection of each groove of the at least one anode on the substrate is disposed opposite to an orthogonal projection of an opening of a first metal line on the substrate.