Reflective Member for Touch Sensing and Mirror Function in OLED
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Solution Overview
Problem
Existing organic light-emitting display apparatuses fail to integrate a mirror function and touch sensing capability without compromising display quality and efficiency.
Innovation Solution
An organic light-emitting display apparatus is designed with a first substrate having a light-emitting and non-light-emitting region, a second substrate parallel to the first with a reflective member that includes patterned parts for touch sensing, and an insulating layer with alternating refractive indices to enhance reflection efficiency, allowing for both mirror and touch sensing functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a reflective member is added to enable mirror function, then mirror capability is improved, but device complexity increases
Solution Approach 1:
The reflective member is designed to perform multiple functions simultaneously: it provides mirror reflection capability while also serving as a touch sensing electrode. This multi-functionality approach allows the same component to address both mirror function and touch sensing needs, thereby improving versatility without proportionally increasing device complexity.
Solution Approach 2:
The patent combines the reflective member and touch sensing electrode into a single integrated component. By merging these two previously separate functions into one element, the device achieves mirror capability and touch sensing without the complexity of separate components for each function.
2Adaptability or versatility
If a reflective member is added to enable mirror function, then mirror capability is improved, but manufacturing complexity increases
Solution Approach 1:
The reflective member and touch sensing electrode are combined into a single integrated component that can be manufactured in one process. This merging eliminates the need for separate manufacturing steps for each component, thereby improving ease of manufacture while achieving the desired mirror function.
3Loss of energy
If an insulating layer with alternating refractive indices is added to enhance reflection efficiency, then reflection efficiency is improved, but device complexity increases
Solution Approach 1:
The insulating layer is constructed as a composite structure with alternating high and low refractive index layers. This composite material approach enhances reflection efficiency through optical interference effects while integrating the enhanced functionality into an existing component, thereby minimizing the increase in device complexity.
Solution Approach 2:
The alternating refractive index layers are nested within the insulating layer structure, creating a compact multi-layer configuration. This nesting approach allows the enhanced reflection functionality to be embedded within the existing component footprint without significantly increasing overall device complexity.
4Measurement precision
If the reflective member is patterned into first and second pattern parts, then touch sensing capability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The reflective member is segmented into first and second pattern parts with different orientations. This segmentation enables independent sensing in different directions, improving touch sensing capability. The segmentation is designed with clear geometric patterns that can be manufactured using standard photolithography techniques, thereby managing manufacturing precision requirements.
Solution Approach 2:
The first and second pattern parts are designed with asymmetric orientations (first direction and second direction perpendicular to each other). This asymmetry enables directional touch sensing capability while maintaining manufacturability through conventional patterning processes that can handle perpendicular line orientations.
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
The apparatus simultaneously achieves a mirror function and touch sensing capability while maintaining display quality and efficiency by using a reflective member with patterned parts and a dielectric insulating layer to manage refractive indices, enhancing reflection efficiency without degrading display performance.
Implementation Method 1
a reflective member on a surface of the second substrate that faces the first substrate, the reflective member corresponding to the non-light-emitting region of the display unit
Implementation Method 2
The insulating layer may include at least one layer having a low refractive index and at least one layer having a high refractive index
Implementation Method 3
a first substrate including a display unit having a light-emitting region
Data Source
AI summary
An organic light-emitting display apparatus includes a first substrate including a display unit having a light-emitting region and a non-light-emitting region, a second substrate parallel to the first substrate, and a reflective member on a surface of the second substrate that faces the first substrate, the reflective member corresponding to the non-light-emitting region of the display unit and being configured to sense touch, and the reflective member including a plurality of first pattern parts electrically connected along a first direction and a plurality of second pattern parts electrically connected along a second direction.