Woven TPEE Fabric Case for LED Backlight Transmission
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Solution Overview
Problem
Existing exterior cases with fabric surfaces pose a challenge in allowing light from display panels to pass through, hindering the transmission of information from electronic devices.
Innovation Solution
The exterior case incorporates a woven outer skin made from thermoplastic polyester elastomer (TPEE) threads with a transparent core and a polyurethane (PU) coating layer, allowing light from light-emitting diodes to pass through while maintaining aesthetic appeal and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the exterior case surface is formed with a fabric, then aesthetic appearance and protective function are improved, but light transmission from the display panel is hindered
Solution Approach 1:
The patent applies composite materials by combining fabric with transparent TPEE (thermoplastic polyether ester) coating. The fabric provides aesthetic appearance and protective function, while the transparent TPEE coating allows light transmission. This composite structure resolves the contradiction between aesthetic appearance and light transmission by integrating both functionalities in a single outer skin component.
Solution Approach 2:
The patent changes the optical parameters of the fabric surface by applying a transparent coating layer with specific light transmission properties. The transparent TPEE coating modifies the fabric's optical characteristics, transforming it from an opaque to a light-transmissive state while maintaining the fabric's aesthetic and protective functions.
2Loss of information
If a transparent coating is applied to allow light transmission, then information visibility is improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges the protective function of the fabric outer skin with the light transmission function of the transparent TPEE coating into a single integrated component. This combination eliminates the need for separate layers or components, thereby reducing manufacturing complexity while achieving both information visibility and aesthetic appearance.
Solution Approach 2:
The patent uses a thin transparent TPEE coating layer applied over the fabric surface. This thin film approach allows light transmission and information visibility without adding significant structural complexity or manufacturing difficulty, as thin film coating is a relatively straightforward manufacturing process.
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 solution enables the transmission of information from electronic devices through the exterior case, enhancing user experience by providing a visible display of information such as time, messages, and other notifications while maintaining the case's protective and decorative functions.
Implementation Method 1
an outer skin configured to cover the base and the circuit board, and woven with wefts and warps allowing the emitted light to pass therethrough. At least one of the weft and the warp may be formed with a thermoplastic polyester elastomer (TPEE) coating thread including a core formed with a transparent TPEE and a coating layer formed with polyurethane (PU) and surrounding the core
Data Source
AI summary
Disclosed is an exterior case. This exterior case comprises: a base including an internal space for storing an electronic device; a circuit board disposed on a first surface of the base and including a plurality of light-emitting elements for emitting light; and a weft-and-warp-woven outer cover surrounding the base and the circuit board and transmitting emitted light, wherein at least one among the weft and the warp may be formed of a thermoplastic polyester elastomer (TPEE) coating yarn which uses a transparent TPEE as a core and includes a coating layer made of polyurethane (PU) and surrounding the core.