IGZO Active Switch and Quantum Dot Display Panel
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Solution Overview
Problem
Existing liquid crystal display (LCD) technologies face challenges in achieving better performance, particularly in utilizing quantum dot technology to enhance display quality and user experience.
Innovation Solution
A display panel incorporating a substrate with a quantum dot light-emitting diode and a quantum dot light sensing layer, coupled with an active switch featuring an indium gallium zinc oxide layer, which allows for low driving voltage and improved spectral adjustability, along with a mesoporous silica framework for quantum dot placement, enhancing display uniformity and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If quantum dot technology is integrated into LCD to enhance display quality, then display uniformity and spectral adjustability are improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent embeds quantum dots within a mesoporous silica framework structure, creating a nested configuration where quantum dots are positioned inside the porous framework. This nesting approach integrates multiple functional components (quantum dots for light emission, mesoporous framework for structural support and uniform distribution) into a unified structure, thereby improving display uniformity while managing the inherent complexity through hierarchical organization
Solution Approach 2:
The patent employs composite materials by combining quantum dots with mesoporous silica framework to create a hybrid structure. This composite approach leverages the optical properties of quantum dots for spectral adjustability and the structural properties of mesoporous materials for uniformity, achieving enhanced display performance while the composite nature provides a systematic solution to the complexity challenge
2Manufacturing precision
If quantum dot light-emitting diode is used to improve display quality, then spectral adjustability and display uniformity are enhanced, but energy consumption increases
Solution Approach 1:
The patent utilizes the quantum confinement effect by precisely controlling the size parameters of quantum dots (typically 2-20 nm diameter). By adjusting the size parameter of quantum dots, the emission wavelength can be tuned across the visible spectrum, achieving spectral adjustability. This parameter-based control allows optimization of both display uniformity and energy efficiency, as smaller quantum dots generally exhibit higher quantum yield and lower non-radiative recombination losses
3Use of energy by moving object
If active switch with IGZO layer is implemented to reduce driving voltage, then power consumption is reduced, but manufacturing precision and uniformity control become more challenging
Solution Approach 1:
The patent employs mesoporous silica framework as a structural component that provides uniform pore distribution and high surface area. This porous structure serves multiple functions: it maintains structural integrity during low-voltage operation, ensures uniform distribution of active materials, and facilitates controlled material deposition during manufacturing. The inherent uniformity of the mesoporous structure compensates for the challenges in controlling uniformity when using low-driving-voltage IGZO active switches
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 solution improves display quality by achieving better uniformity, reducing energy consumption, and enhancing user visual experience through the use of quantum dot technology, while addressing grain size limitations and providing spectral adjustability and environmental stability.
Implementation Method 1
an active switch featuring an indium gallium zinc oxide layer, which allows for low driving voltage and improved spectral adjustability
Implementation Method 2
a pixel, which is disposed on the substrate and coupled to the first active switch and includes a quantum dot light-emitting diode
Implementation Method 3
a light sensor, which is disposed on the substrate and coupled to the second active switch and includes a quantum dot light sensing layer
Implementation Method 4
quantum dot technology... providing spectral adjustability
Data Source
AI summary
The present application provides a display panel and a display device. The display panel includes a substrate; an active switch, which is disposed on the substrate and includes a first active switch, a second active switch, and an indium gallium zinc oxide layer; a pixel, which is disposed on the substrate and coupled to the first active switch and includes a quantum dot light-emitting diode; and a light sensor, which is disposed on the substrate and coupled to the second active switch and includes a quantum dot light sensing layer; where the active switch includes a gate layer, a gate insulating layer, the indium gallium zinc oxide layer, an etch stop layer, a metal layer, and a pixel electrode layer which are sequentially arranged on the substrate.