Fluorescent Sheet Display Panel for Thin High-Definition Visibility
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Solution Overview
Problem
Existing display panels face challenges in improving visibility during light emission, especially with higher-definition displays, while also requiring thinner and cost-effective manufacturing, as conventional light guides complicate the process and increase thickness.
Innovation Solution
A display panel design featuring a light emitting element array substrate without fluorescent bodies, a fluorescent sheet or resin base material, and a light guide path-forming base material that forms a light guide path in the optical axis direction, with an opaque thin layer covering the exit surface, allowing for reduced thickness and lower manufacturing costs by minimizing light diffusion and scattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a light guide with through holes is provided to improve visibility during light emission, then visibility is improved, but the device thickness cannot be reduced and manufacturing becomes more complex
Solution Approach 1:
The patent extracts the fluorescent body from the light emitting element itself and places it in a separate fluorescent sheet or resin base material layer. This separation allows the light emitting element to be smaller and the overall device to be thinner while maintaining visibility through the fluorescent conversion layer.
Solution Approach 2:
The patent transitions from a three-dimensional light guide structure with through holes to a two-dimensional fluorescent sheet or resin base material layer that converts light horizontally. This dimensional change eliminates the need for hole-making processes and reduces device thickness while maintaining visibility.
2Illumination intensity
If a light guide with through holes is provided to improve visibility during light emission, then visibility is improved, but manufacturing cost increases due to hole-making process
Solution Approach 1:
The patent extracts the fluorescent body from the light emitting element itself and places it in a separate fluorescent sheet or resin base material layer. This separation allows the light emitting element to be smaller and the overall device to be thinner while maintaining visibility through the fluorescent conversion layer.
Solution Approach 2:
The patent transitions from a three-dimensional light guide structure with through holes to a two-dimensional fluorescent sheet or resin base material layer that converts light horizontally. This dimensional change eliminates the need for hole-making processes and reduces device thickness while maintaining visibility.
3Manufacturing precision
If the display is made high-definition, then display quality is improved, but making small holes becomes difficult in terms of process and strength
Solution Approach 1:
The patent extracts the fluorescent body from the light emitting element itself and places it in a separate fluorescent sheet or resin base material layer. This separation allows the light emitting element to be smaller and the overall device to be thinner while maintaining visibility through the fluorescent conversion layer.
Solution Approach 2:
The patent transitions from a three-dimensional light guide structure with through holes to a two-dimensional fluorescent sheet or resin base material layer that converts light horizontally. This dimensional change eliminates the need for hole-making processes and reduces device thickness while maintaining visibility.
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 enhances visibility for higher-definition displays, reduces device thickness, and lowers production costs by optimizing light propagation and reducing power consumption and heat generation, while allowing for various material choices and aesthetic designs.
Implementation Method 1
a fluorescent sheet or fluorescent resin base material laminated on the light emitting element array substrate
Implementation Method 2
a light guide path-forming base material that is laminated on the fluorescent sheet or fluorescent resin base material and forms a light guide path in an optical axis direction of the light emitting element
Implementation Method 3
forms a light guide path in an optical axis direction
Data Source
AI summary
Provided are a display panel and an operation display panel which improve visibility when emitting light in order to cope even with a higher-definition display while reducing the thickness of a device and which can be manufactured at low cost. The present invention comprises: a light emitting element array substrate in which light emitting elements containing no fluorescent body are two-dimensionally arranged; a fluorescent sheet or fluorescent resin base material laminated on the light emitting element array substrate; a light guide path-forming base material that is laminated on the fluorescent sheet or fluorescent resin base material and forms a light guide path in an optical axis direction of the light emitting element; and an opaque thin layer that covers an exit surface side of the light guide path-forming base material.