Reflective Layer Integration for Mirror, Touch, and Pressure Displays
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Solution Overview
Problem
The manufacturing cost of display devices with mirror, touch sensing, and pressure sensing functions is increased due to the need for additional layers and processes, such as a reflective member layer, touch electrode layer, and pressure sensing layer.
Innovation Solution
A display device design that incorporates a reflective layer with a touch sensing controller, which shares functions with the touch electrode layer, and includes a pressure sensing controller with a Wheatstone bridge circuit, allowing for concurrent mirror and touch or pressure sensing without separate processes for each layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a reflective member layer is added to provide mirror function, then the mirror function is achieved, but the manufacturing cost increases
Solution Approach 1:
The patent combines the reflective member layer with the touch electrode layer into a single integrated structure. The reflective member serves dual purposes: providing mirror functionality and acting as the touch sensing electrode, thereby eliminating the need for separate layers and reducing manufacturing complexity and cost
Solution Approach 2:
The reflective member layer is designed to perform multiple functions simultaneously: it provides the mirror reflection function, serves as the touch electrode for capacitive sensing, and acts as part of the pressure sensing structure through its interaction with the pressure-sensitive adhesive layer
2Adaptability or versatility
If a touch electrode layer is added for touch sensing function, then the touch sensing function is achieved, but the manufacturing cost increases
Solution Approach 1:
The touch electrode layer is merged with the reflective member layer, forming a single integrated component. This combination allows the same structure to provide both optical reflection and electrical capacitance for touch sensing, eliminating redundant manufacturing steps
Solution Approach 2:
The integrated reflective member/touch electrode structure serves multiple functions: optical reflection for mirror mode, capacitive sensing for touch detection, and structural support for the pressure sensing mechanism
3Adaptability or versatility
If a pressure sensing layer is added for pressure sensing function, then the pressure sensing function is achieved, but the manufacturing cost increases
Solution Approach 1:
The pressure sensing function is integrated into the existing structure by utilizing the pressure-sensitive adhesive layer in combination with the reflective member/touch electrode assembly, eliminating the need for a separate pressure sensing layer
Solution Approach 2:
The pressure-sensitive adhesive layer serves dual purposes: providing mechanical bonding between layers and enabling pressure sensing through its piezoresistive properties when combined with the conductive reflective member structure
4Adaptability or versatility
If multiple separate layers are used for mirror, touch sensing, and pressure sensing functions, then all functions are achieved, but the device complexity increases
Solution Approach 1:
Multiple functional layers are merged into integrated structures: the reflective member and touch electrode form a single layer, and the pressure sensing capability is integrated into the adhesive layer assembly, significantly reducing the total number of discrete layers
Solution Approach 2:
Each integrated structure performs multiple functions: the reflective member/touch electrode assembly provides optical reflection, touch sensing, and structural support, while the pressure-sensitive adhesive provides bonding and pressure sensing, reducing overall device complexity
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 simplifies the manufacturing process, reduces costs, and enables simultaneous mirror and touch or pressure sensing functions by integrating sensing capabilities into the reflective layer, enhancing user interaction while minimizing additional layer requirements.
Implementation Method 1
a first reflective layer on the light emitting element and including an opening overlapping the light emitting element, wherein the first reflective layer includes a material having a first reflectivity
Implementation Method 2
The insulation layer may include a wavelength conversion particle and a scattering particle
Implementation Method 3
The insulation layer may include a wavelength conversion particle and a scattering particle
Data Source
AI summary
A display device according to one or more embodiments of the present disclosure includes a substrate, a first electrode and a second electrode on the substrate, a light emitting element electrically connected to the first electrode and the second electrode, and a first reflective layer on the light emitting element and including an opening overlapping the light emitting element, wherein the first reflective layer includes a material having a first reflectivity.