Micro-Display Optical Engine Cooling for Bright Full-Color Projection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing micro-LED projection display technology faces challenges in achieving full-color display, high brightness, and thermal stability, along with manufacturing difficulties such as panel light and color consistency, due to immature manufacturing technologies and communication barriers in the supply chain.
Innovation Solution
A new micro-display optical engine is developed using micro-LED pixels for light emission and projection amplification, comprising a micro-LED panel, coolant, thin lens, metal frame, connecting pillar, and projection lens, which simplifies production, enhances thermal stability, and improves contrast and color gamut.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If micro-LED panels with higher power are used to achieve greater brightness, then illumination intensity is improved, but thermal stability deteriorates
Solution Approach 1:
The patent introduces a coolant as an intermediary substance between the micro-LED panel and the surrounding environment. The coolant flows through channels in the housing to absorb and carry away heat generated by high-power micro-LEDs, enabling the system to maintain high brightness while achieving thermal stability through active heat dissipation.
2Illumination intensity
If micro-LED panels with larger area are used to achieve higher brightness, then illumination intensity is improved, but manufacturing precision deteriorates
Solution Approach 1:
The patent divides the large-area micro-LED panel into multiple smaller sub-panels or modules. Each sub-panel can be manufactured with consistent precision, and then assembled together to form the complete display. This segmentation approach maintains manufacturing precision while achieving the required overall brightness and area.
3Device complexity
If traditional projection optical systems are used, then device complexity is reduced, but illumination intensity deteriorates
Solution Approach 1:
The patent transitions from traditional two-dimensional projection optics to a three-dimensional optical cavity structure. By utilizing the third dimension (depth) with reflective surfaces and multi-path light routing, the system achieves enhanced light extraction and projection brightness without proportionally increasing 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
The proposed solution enables preliminary productization of micro-LED projection technology with high contrast, color gamut, and thermal stability, facilitating the mass production of micro-LED projection products by addressing manufacturing and supply chain challenges.
Implementation Method 1
a coolant, a thin lens, a metal frame, a connecting pillar and a projection lens... excellent thermal stability of heat dissipation
Implementation Method 2
micro-LED pixels to emit light and perform projection amplification
Implementation Method 3
a thin lens... and a projection lens... projection amplification
Data Source
AI summary
The present disclose discloses a micro-display optical engine including a micro-LED panel, a coolant, a thin lens, a metal frame, a connecting pillar and a projection lens; the micro-LED panel comprises a substrate, a number of pixel light-emitting micro-LED grains, a glass plate, a metal bracket, a sealing frame, a radiator, a filling adhesive and a transparent heat-conducting adhesive. The present disclose also discloses a single-engine, dual-engine and three-engine full-color projector. The present disclose has remarkable features such as relatively simple production, the ability to achieve preliminary productization, excellent thermal stability of heat dissipation, high contrast and color gamut, laying a certain foundation for the actual productization of the new micro-LED micro-display projection technology.