Liquid Crystal Panel UV-Transparent Substrates for Bright Spot Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal panels, especially in the IPS mode, suffer from bright spots caused by foreign matter, which affect image quality due to light transmission and orientation abnormalities, and existing methods either block the spots or require costly and inefficient UV irradiation techniques.
Innovation Solution
A liquid crystal panel with transparent substrates that transmit specific wavelength ultraviolet rays to the affected areas, allowing for targeted irradiation of molecular chains causing orientation abnormalities, thereby modifying the liquid crystal orientation without damaging the oriented film and eliminating the need for masks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional UV irradiation is used to modify bright spots, then orientation abnormalities can be corrected, but the oriented film may be damaged and manufacturing cost increases
Solution Approach 1:
The patent applies local quality by making the substrate transparent to UV rays only in specific regions where bright spots are located, while maintaining UV absorption in other regions. This allows targeted UV irradiation to correct orientation abnormalities at bright spot locations without exposing the entire oriented film to UV radiation, thus preventing film damage while achieving the desired correction
Solution Approach 2:
The substrate is segmented into regions with different UV transmission properties: transparent regions corresponding to bright spot locations and opaque regions for other areas. This segmentation enables selective UV irradiation to only the necessary areas, correcting orientation abnormalities without damaging the broader oriented film structure
2Manufacturing precision
If bright spots are blocked to improve image quality, then visual defects are reduced, but manufacturing complexity and cost increase
Solution Approach 1:
The patent converts the harmful effect of bright spots into a beneficial solution by utilizing the substrate's own UV transmission properties. Instead of adding complex blocking structures or masks, the substrate itself is designed to be transparent to UV at bright spot locations, allowing the UV irradiation process to automatically target and correct the defects without requiring additional manufacturing steps
3Productivity
If targeted UV irradiation is implemented, then manufacturing cost decreases and process efficiency improves, but precision in locating and treating bright spots is required
Solution Approach 1:
The patent applies preliminary action by pre-defining the UV transmission characteristics of the substrate during manufacturing. The substrate is designed with specific transparent regions corresponding to potential bright spot locations before the actual bright spots are detected, enabling automatic targeted irradiation without requiring real-time precise measurement and positioning during the correction process
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
This approach effectively reduces the visual recognition of bright spots, improves image quality, and lowers manufacturing costs by modifying orientation abnormalities while maintaining image clarity across viewing angles.
Implementation Method 1
the first transparent substrate and the second transparent substrate have transparency in a visible light region and an ultraviolet absorptive property. At least one of the first transparent substrate and the second transparent substrate includes a structure arranged in a predetermined region thereof, where the structure transmits ultraviolet rays in a specific wavelength range
Implementation Method 2
As one example of non-contact orientation treatment, photo-alignment treatment can be cited. The photo-alignment treatment is treatment that provides an orientation regulating capability to the thin film by irradiating the thin film with ultraviolet rays such that chemical bonds of macromolecules in the oriented film material is decomposed, isomerized and dimerized
Data Source
AI summary
Provided are a liquid crystal panel and a method of manufacturing method of manufacturing a liquid crystal panel. The liquid crystal panel includes a first transparent substrate; a second transparent substrate; and a liquid crystal layer formed between the first transparent substrate and the second transparent substrate. The first transparent substrate and the second transparent substrate have transparency in a visible light region and an ultraviolet absorptive property. At least one of the first transparent substrate and the second transparent substrate includes a structure arranged in a predetermined region thereof, where the structure transmits ultraviolet rays in a specific wavelength range.