Cholesteric Liquid Crystal Reflective Part for Micro LED Crosstalk Reduction
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Solution Overview
Problem
Micro LED displays face severe crosstalk issues due to light-emitting chips emitting light horizontally, which conventional black or white adhesives fail to address effectively, leading to reduced light utilization.
Innovation Solution
A display panel design incorporating a reflective part with cholesteric liquid crystals between light-emitting components, which selectively reflects light to reduce crosstalk and increase light utilization, using a polymer matrix and liquid crystal microcapsules to enhance light reflection and transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a black adhesive is used to reduce crosstalk, then crosstalk is reduced, but light utilization ratio decreases
Solution Approach 1:
The patent changes the optical parameters of the adhesive layer by incorporating cholesteric liquid crystal particles, which have selective wavelength reflection properties. This allows the adhesive to reflect specific wavelengths (reducing crosstalk) while transmitting other wavelengths (maintaining light utilization), resolving the contradiction between crosstalk reduction and light efficiency
Solution Approach 2:
The patent creates a composite adhesive material combining conventional adhesive with cholesteric liquid crystal particles. This composite structure provides both the adhesive bonding function and the selective light reflection function, simultaneously achieving crosstalk reduction and maintaining high light utilization ratio
2Loss of energy
If a white adhesive is used, then light utilization is maintained, but crosstalk is not reduced
Solution Approach 1:
The patent modifies the optical parameters of the white adhesive by adding cholesteric liquid crystal particles with specific reflective properties. This transforms the adhesive from a simple light-transmitting material to a selective wavelength reflector, enabling it to reduce crosstalk while maintaining its light-utilization benefits
3Ease of manufacture
If conventional adhesives are used between light-emitting components, then manufacturing is simple, but crosstalk cannot be effectively reduced
Solution Approach 1:
The patent develops a composite adhesive material that integrates cholesteric liquid crystal particles into conventional adhesive formulations. This composite can be applied using existing manufacturing processes while providing advanced optical functionality for crosstalk reduction, thus maintaining manufacturing simplicity
Solution Approach 2:
The patent modifies the optical parameters of conventional adhesives by incorporating cholesteric liquid crystal particles, transforming them from simple bonding materials to functional optical elements that reduce crosstalk without complicating the 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
Effectively reduces crosstalk and increases light utilization by using cholesteric liquid crystals to reflect light emitted from micro LEDs, improving the overall efficiency of the display panel.
Implementation Method 1
a reflective part disposed between two adjacent light-emitting components, wherein the reflective part comprises a plurality of cholesteric liquid crystals
Implementation Method 2
the reflective part comprises a polymer matrix and a plurality of liquid crystal microcapsules (LCMs) dispersed in the polymer matrix, and the cholesteric liquid crystals are disposed in the LCMs
Data Source
AI summary
A display panel and a manufacturing method thereof are disclosed. The display panel includes a first base plate. The first base plate includes a first substrate, a plurality of light-emitting components, and a reflective part. The light-emitting components are disposed on a side of the first substrate. The reflective part is disposed between two adjacent light-emitting components and includes a plurality of cholesteric liquid crystals.