Optical Member Pre-Treatment Layer for Display Reliability
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Solution Overview
Problem
Conventional display devices face challenges in achieving durability and reliability due to contamination and moisture exposure of wavelength conversion particles in backlight units, leading to potential damage from external factors.
Innovation Solution
An optical member comprising a receiving part with a pre-treatment layer, a host, and a sealing part, where the pre-treatment layer has a distinct surface characteristic from the host, effectively preventing contamination and ensuring the sealing part can securely encase wavelength conversion particles, thereby enhancing protection against moisture and oxygen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wavelength conversion particles are directly exposed in the backlight unit, then the optical conversion function is achieved, but the particles are vulnerable to contamination and moisture damage
Solution Approach 1:
The patent applies a sealing part in the form of a thin film structure that encapsulates the wavelength conversion particles. This sealing film acts as a protective barrier preventing moisture and contaminants from reaching the particles, while maintaining the optical functionality of the backlight unit.
Solution Approach 2:
The patent introduces a sealing part as an intermediary element between the wavelength conversion particles and the external environment. This sealing part mediates the interaction by providing a protective interface that blocks harmful factors (moisture, contaminants) while allowing the optical system to function.
2Reliability
If a sealing part is added to protect wavelength conversion particles, then protection against moisture and contamination is improved, but the device complexity increases
Solution Approach 1:
The patent merges the sealing function with the existing optical member structure. The sealing part is integrated into the optical member rather than being a separate component, thereby providing protection while minimizing the increase in device complexity.
Solution Approach 2:
The sealing part serves multiple functions: it protects the wavelength conversion particles from moisture and contamination, maintains the structural integrity of the optical member, and potentially provides optical functionality. This multi-functionality reduces the need for additional separate components.
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 the reliability and durability of the optical member and display devices by preventing contamination and external damage, ensuring effective sealing and protection of wavelength conversion particles.
Implementation Method 1
a pre-treatment layer between the sealing part and an inner surface of the receiving part
Implementation Method 2
a sealing part in the receiving part... ensuring effective sealing and protection of wavelength conversion particles
Implementation Method 3
a quantum dot bar having a plurality of quantum dots, which can convert blue light into red light or green light... as the blue light is irradiated onto the quantum dot bar, the blue light, the red light and the green light are mixed with each other
Data Source
AI summary
Disclosed are an optical member, a display device having the same, and a method of fabricating the same. The optical member includes a receiving part having an empty space therein, a host in the receiving part, a plurality of wavelength conversion particles in the host, a sealing part in the receiving part, and a pre-treatment layer between the sealing part and an inner surface of the receiving part.