Embedded MicroLED Reflective Display for Low Light Readability
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Solution Overview
Problem
Conventional reflective display panels struggle to remain readable under low ambient lighting conditions without becoming bulkier when additional lighting systems are installed, which is undesirable for applications like smart glass in vehicles.
Innovation Solution
Embedding a microLED light source within the display panel on the same layer as the electronic pigment material, along with a reflective layer and transparent sealing material, and incorporating a light sensor to control light output based on ambient light levels, ensuring the display remains readable in low light conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If additional lighting systems are installed to improve readability in low light conditions, then illumination intensity is improved, but device complexity and volume increase
Solution Approach 1:
The patent merges the light source with the display panel by embedding it within the same structure. The light source is positioned behind the pigment material layer, combining the illumination function with the display structure itself, thereby improving readability without adding external lighting components that would increase device complexity.
Solution Approach 2:
The light source is nested within the display panel structure, specifically positioned behind the pigment material layer. This nesting approach allows the illumination system to be contained within the existing display boundaries, providing light for low-visibility conditions without expanding the overall device volume or complexity.
2Illumination intensity
If additional lighting systems are installed to improve readability in low light conditions, then illumination intensity is improved, but the display becomes bulkier
Solution Approach 1:
The illumination system is merged with the display panel structure by embedding the light source within the panel itself. This integration eliminates the need for separate external lighting components, providing necessary illumination without increasing the overall display volume or requiring additional space for mounting external lights.
Solution Approach 2:
The light source is nested within the existing display panel structure, positioned behind the pigment material layer. This nesting allows the illumination function to be accommodated within the current device boundaries, providing enhanced readability in low light without increasing the display's external dimensions or requiring additional mounting space.
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 allows for a compact, energy-efficient reflective display that remains readable in low ambient light environments without the need for external lighting systems, maintaining a sleek design suitable for various applications, including vehicle displays.
Implementation Method 1
the light source is a microLED
Implementation Method 2
a layer of reflective material to reflect the light emitted by the light source
Implementation Method 3
the pigment material in each pixel displaying information by reflecting light
Data Source
AI summary
A reflective display device includes a layer of pigment material that is divided into a plurality of pixels, the pigment material in each pixel displaying information by reflecting light. The reflective display device further includes a light source embedded in the layer of a pigment material, wherein the light source emits light that is reflected by the pigment material.