Flexible Touch Substrate Shielding Layer for Noise Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In flexible touch substrates with F-MLOC structures, the close proximity between touch electrode layers and light-emitting device electrodes results in large load capacitance, leading to noise signal interference and poor touch performance.
Innovation Solution
Incorporating a shielding layer between the light-emitting devices and the touch electrode layer, which is insulated and includes openings to allow light passage, reducing load capacitance and noise signal interference while maintaining display effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the distance between touch electrode layer and light-emitting device electrodes is reduced to achieve thinner substrate and narrower bezel, then the flexibility and optical display effect are improved, but the load capacitance increases causing noise signal interference
Solution Approach 1:
A shielding layer is introduced as an intermediary component between the touch electrode layer and the light-emitting device electrodes. This shielding layer includes multiple openings that allow light to pass through while blocking electric field interference, thereby reducing load capacitance and noise signal interference without increasing substrate thickness
Solution Approach 2:
The shielding layer is designed with a porous structure containing multiple openings. This porous configuration enables the shielding layer to perform dual functions: blocking electric field interference to reduce capacitance while simultaneously allowing light transmission to maintain display effectiveness
2Reliability
If a shielding layer is added to reduce load capacitance and noise interference, then touch performance is improved, but the device structure becomes more complex
Solution Approach 1:
The shielding layer is designed to perform multiple functions simultaneously: it shields electric field interference to reduce load capacitance, allows light transmission through its openings to maintain display effectiveness, and can be integrated with existing device layers. This multi-functionality justifies the additional structural complexity by delivering multiple benefits from a single component
Data Source
AI summary
Provided are a flexible touch substrate, a flexible touch panel, and a flexible touch apparatus. The flexible touch substrate includes: a flexible base, a plurality of light-emitting devices, a touch electrode layer, and a shielding layer. The light-emitting devices are located on the flexible base; the touch electrode layer is located on the side of the light-emitting devices distant from the flexible base; the shielding layer is located between the light-emitting devices and the touch electrode layer; the shielding layer is insulated from the light-emitting devices and the touch electrode layer, the shielding layer comprises a plurality of openings; and light emitted by the light-emitting device can pass through the openings.