OLED Touch Panel Integration Reduces Thickness
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Solution Overview
Problem
The existing organic light emitting diode (OLED) touch display panels face challenges in reducing thickness and manufacturing cost due to the method of stacking OLED panels and touch panels, which limits their development towards thinner and smaller sizes.
Innovation Solution
The solution integrates OLEDs and touch sensing capacitors on the same substrate, eliminating the need for an extra substrate for touch sensing capacitors and directly placing magnetic sensing wire loops on a secondary substrate, thereby reducing thickness and material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If OLED panels and touch panels are stacked to form OLED touch display panels, then touch sensing functionality is achieved, but panel thickness increases and manufacturing cost increases
Solution Approach 1:
The patent merges the OLED display structure with the touch sensing structure by integrating both OLEDs and touch sensing capacitors on the same substrate. The anode of the OLED serves dual purposes as both the light-emitting electrode and one electrode of the touch sensing capacitor, eliminating the need for separate touch panel stacking and thereby reducing panel thickness while maintaining touch sensing functionality.
Solution Approach 2:
The patent implements multi-functionality by designing the anode structure to serve both OLED light emission and touch sensing functions simultaneously. The same electrode structure is used for both display and touch detection, reducing the number of components and layers needed in the overall panel construction.
2Reliability
If OLED panels and touch panels are stacked to form OLED touch display panels, then touch sensing functionality is achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines the manufacturing processes of OLEDs and touch sensing capacitors into a single integrated fabrication process. By forming both structures on the same substrate simultaneously using the same material layers (particularly the anode), the patent eliminates the need for separate touch panel manufacturing and assembly steps, thereby reducing manufacturing cost.
Solution Approach 2:
The patent achieves cost reduction through multi-functionality by using the same electrode materials and fabrication steps to create both OLEDs and touch sensing capacitors. The anode layer serves dual purposes, eliminating the need for additional specialized materials and processing steps that would increase manufacturing cost.
3Reliability
If extra substrate is used for touch sensing capacitors, then touch sensing functionality is achieved, but material cost and device complexity increase
Solution Approach 1:
The patent merges the substrate requirements for OLEDs and touch sensing capacitors into a single substrate platform. Both types of devices are fabricated on the same substrate using the same underlying structure, eliminating the need for an extra substrate and the complexity associated with aligning and bonding multiple substrates together.
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 integration effectively reduces the thickness of the OLED touch display panel and decreases manufacturing costs by eliminating the need for additional substrates and manufacturing steps, while maintaining the functionality of both OLEDs and touch sensing capabilities.
Implementation Method 1
an organic light emitting diode display panel having advantages of self light emitting
Implementation Method 2
each second electrode, each dielectric layer and each second electrode stripe form a touch sensing capacitor
Data Source
AI summary
The present invention provides an organic light emitting diode touch display panel including a substrate, a plurality of first electrodes and a plurality of second electrodes disposed on the substrate, a plurality of light emitting layers, a plurality of dielectric layers, a plurality of first electrode stripes, and a plurality of second stripes. Each light emitting layer is disposed on each first electrode, and each dielectric layer is disposed on each second electrode. Each first electrode stripe is disposed on the light emitting layers in each row, and each second electrode stripe is disposed on the dielectric layers in each row. Each first electrode, each light emitting layer and each first electrode stripe form an organic light emitting diode, and each second electrode, each dielectric layer and each second electrode stripe form a touch sensing capacitor.