Liquid Crystal Display Panel Light Adjusting Layer Yellowing Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal display (LCD) panels experience uneven thickness in the peripheral display area due to manufacturing processes, leading to increased yellow light transmittance and yellowing issues, which affect the optical properties and display quality.
Innovation Solution
Incorporating a light adjusting layer in the peripheral display area, which can absorb yellow light or emit blue light, to mitigate the uneven thickness-induced yellowing by using dye filters, interference filters, or particle layers with specific phosphors, ensuring consistent optical properties with the intermediate display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the liquid crystal cell thickness is increased in the peripheral display area to improve manufacturing yield, then the yellowing degree increases and display quality deteriorates
Solution Approach 1:
The patent applies local quality by introducing a light adjusting layer specifically in the peripheral display area where yellowing occurs, rather than uniformly treating the entire display panel. This layer has different optical properties (yellow light absorption or blue light emission) tailored to compensate for the local thickness variation and yellowing issue in the peripheral region, while leaving the intermediate display area unchanged.
Solution Approach 2:
The patent changes the optical parameters of the peripheral display area by adding a light adjusting layer that modifies the light transmission characteristics. The layer absorbs yellow light or emits blue light, effectively changing the spectral composition of transmitted light to compensate for the yellowing caused by increased liquid crystal cell thickness in the peripheral area.
2Object-affected harmful factors
If a light adjusting layer is added to reduce yellowing in the peripheral display area, then display quality improves, but device complexity increases
Solution Approach 1:
The light adjusting layer acts as an intermediary element between the liquid crystal layer and the observer's eye. It mediates the optical interaction by absorbing excess yellow light or emitting blue light to compensate for the yellowing, thereby improving display quality without requiring fundamental changes to the liquid crystal cell structure or manufacturing process.
Solution Approach 2:
The light adjusting layer can be implemented using composite material structures, such as a transparent base combined with dye layers or phosphor particles. These composite structures provide the necessary optical functions (yellow light absorption or blue light emission) while maintaining transparency and integrating with the existing display panel architecture.
3Ease of manufacture
If the liquid crystal cell thickness is non-uniform in the peripheral display area, then manufacturing is easier, but optical properties become inconsistent
Solution Approach 1:
The patent applies local quality by introducing a light adjusting layer specifically in the peripheral display area where yellowing occurs, rather than uniformly treating the entire display panel. This layer has different optical properties (yellow light absorption or blue light emission) tailored to compensate for the local thickness variation and yellowing issue in the peripheral region, while leaving the intermediate display area unchanged.
Solution Approach 2:
The patent changes the optical parameters of the peripheral display area by adding a light adjusting layer that modifies the light transmission characteristics. The layer absorbs yellow light or emits blue light, effectively changing the spectral composition of transmitted light to compensate for the yellowing caused by increased liquid crystal cell thickness in the peripheral area.
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 light adjusting layer effectively reduces yellowing by absorbing or emitting light, thereby enhancing the display quality and consistency of the peripheral area, aligning it with the intermediate area's optical properties.
Implementation Method 1
the light adjusting layer is configured to absorb yellow light
Implementation Method 2
the light adjusting layer is configured to emit blue light
Implementation Method 3
the light adjusting layer is an interference filter. The interference filter includes two metal films disposed opposite to each other, and a transparent intermediate film disposed between the two metal films
Data Source
AI summary
A liquid crystal display panel includes a light adjusting layer. The light adjusting layer is configured to reduce a yellowing degree of a peripheral display area. The light adjusting layer is located in the peripheral display area in a display area of the liquid crystal display panel, and the peripheral display area is located at a periphery of an intermediate display area in the display area.