Liquid Crystal Display Radical Bonding Alignment
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Solution Overview
Problem
Liquid crystal displays often exhibit a greenish color defect due to the alignment of liquid crystal molecules, which affects the display's image quality and color accuracy.
Innovation Solution
Incorporating a first free radical in the organic layer and a second free radical in the alignment layers, which react to form a product that reduces or prevents the greenish defect by altering the alignment of liquid crystal molecules, thereby improving the display's color rendition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If liquid crystal molecules are aligned to enable display function, then the display can operate, but a greenish color defect occurs affecting image quality
Solution Approach 1:
The patent introduces a radical bonding layer as an intermediary between the liquid crystal layer and the alignment layers. This layer contains radical groups that form bonds with the liquid crystal molecules, mediating the interaction and controlling the alignment process to eliminate the greenish color defect while maintaining display functionality
Solution Approach 2:
The patent changes the chemical parameters of the alignment layer by incorporating radical groups with specific bonding characteristics. This parameter change in the chemical composition allows for controlled interaction with liquid crystal molecules, transforming the alignment behavior to eliminate the harmful greenish color defect
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 effectively minimizes the greenish color defect, enhancing the display's color accuracy and overall image quality by controlling the alignment of liquid crystal molecules, thus providing a more accurate representation of colors.
Implementation Method 1
a first free radical included in the organic layer and a second free radical included in at least one of the lower alignment layer and the upper alignment layer are radical bonded
Implementation Method 2
a voltage is applied to the electric field generating electrodes to generate an electric field in a liquid crystal layer. Due to the generated electric field, liquid crystal molecules of the liquid crystal layer are aligned and a polarization of incident light is controlled
Data Source
AI summary
A liquid crystal display including a first substrate; a second substrate facing the first substrate; a thin film transistor disposed on the first substrate; an organic layer disposed on the thin film transistor; a pixel electrode disposed on the organic layer; a lower alignment layer disposed on the pixel electrode; a common electrode disposed on the second substrate; and an upper alignment layer disposed on the common electrode, wherein a first free radical included in the organic layer and a second free radical included in at least one of the lower alignment layer and the upper alignment layer are radical bonded.