Quantum Dot Display Cavities to Prevent Pixel Light Cross-Talk
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Micro-LED display panels suffer from chromatic aberration and reduced color purity due to light cross-talk between adjacent pixel units, affecting the color gamut and display quality.
Innovation Solution
A display panel design featuring excitation cavities with reflection portions on the sidewalls, where light-emitting devices and quantum dots are positioned, reflecting light within the cavities to excite quantum dots efficiently and prevent cross-talk, improving light utilization and color purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light-emitting devices are arranged in adjacent pixel units, then the display resolution and brightness are improved, but light cross-talk between adjacent pixel units occurs, reducing color purity
Solution Approach 1:
The patent divides the display panel into independent excitation cavities using isolation structures. Each cavity contains a light-emitting device and quantum dots, physically separating adjacent pixel units to prevent light cross-talk while maintaining high display brightness through efficient light confinement and reflection within each cavity.
Solution Approach 2:
The patent introduces isolation structures as intermediary elements between adjacent light-emitting devices. These structures include reflection portions that actively manage light propagation, serving as mediators to redirect light within cavities while blocking cross-talk to adjacent pixels, thus preserving color purity.
2Manufacturing precision
If quantum dots are excited by light-emitting devices, then the color accuracy is improved, but light emitted by light-emitting devices is lost through sidewalls, reducing light utilization efficiency
Solution Approach 1:
The patent converts the harmful light loss through sidewalls into a beneficial effect by adding reflection portions to the cavity sidewalls. These reflection portions capture light that would otherwise be lost and redirect it toward the quantum dots, improving both light utilization efficiency and color accuracy simultaneously.
Solution Approach 2:
The patent applies different optical properties to different regions of the cavity. The sidewalls are equipped with reflection portions that have high reflectivity, while the bottom and top surfaces have light outlets with specific transmission characteristics. This localized optimization of optical properties maximizes light utilization for quantum dot excitation while maintaining color accuracy.
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
Enhances luminous brightness, display quality, and color accuracy by optimizing light emission and reducing cross-talk, thereby improving the overall display performance.
Implementation Method 1
sidewalls of the excitation cavities are provided with a reflection portion, at least a part of the reflection portion covers at least a part of the first substrate and at least a part of the second substrate, and light outlets are positioned on a side of the reflection portion close to the second substrate
Implementation Method 2
a quantum dot layer including quantum dots, in the excitation cavities and on a side of the light-emitting devices facing away from the first substrate; light emitted by the light-emitting devices can be reflected in the excitation cavities and used for exciting the quantum dots to emit light
Data Source
AI summary
The present application discloses a display panel and a display apparatus. The display panel includes: a first substrate and a second substrate, and an isolation structure and a plurality of light-emitting devices between the first substrate and the second substrate, the second substrate and the first substrate being both connected to the isolation structure, the first substrate, the isolation structure and the second substrate forming a plurality of excitation cavities, and each of the light-emitting devices being in one of the excitation cavities; a quantum dot layer including quantum dots, in the excitation cavities and on a side of the light-emitting devices facing away from the first substrate; where sidewalls of the excitation cavities are provided with a reflection portion, at least a part of the reflection portion covers at least a part of the first substrate and at least a part of the second substrate.