Display Polarizer Light Leakage Prevention Pattern
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal displays suffer from light leakage in the non-overlapping region of first and second polarizers, which deteriorates display quality due to the middle cover's placement between the liquid crystal panel and the backlight unit.
Innovation Solution
A display device design that includes a light leakage prevention pattern with a color filter and light blocking pattern overlapping each other in the non-overlapping region of the first and second polarizers, where the color filter pattern completely overlaps the light blocking pattern, and the end portion of the first polarizer overlaps the color filter pattern, with a separation distance of about 0.5 mm or less, and a sealing member is used to attach the substrates without overlapping the light leakage prevention pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a middle cover is disposed between the liquid crystal panel and the backlight unit to implement slimness, then the thickness of the display device is reduced, but light leakage occurs in the non-overlapping region of the first and second polarizers
Solution Approach 1:
The patent applies local quality by introducing a light leakage prevention pattern specifically in the non-overlapping region where light leakage occurs. This pattern includes a color filter pattern and a light blocking pattern that are selectively positioned only in the affected area, leaving other regions unchanged. The light blocking pattern is configured to overlap with the color filter pattern precisely in the non-overlapping region of the polarizers, creating a localized solution that addresses the light leakage problem without affecting the overall slim design of the display device.
2Length of moving object
If the first polarizer is disposed to not overlap the middle frame, then the display device achieves slimness, but a non-overlapping region of the first and second polarizers is generated causing light leakage
Solution Approach 1:
The light leakage prevention pattern is selectively applied only in the non-overlapping region where the first and second polarizers do not overlap. The color filter pattern and light blocking pattern are positioned to address specifically this localized issue, maintaining the slim profile achieved by the non-overlapping polarizer arrangement while preventing light leakage in the affected area.
Solution Approach 2:
The light leakage prevention pattern acts as an intermediary element between the first and second polarizers in the non-overlapping region. The color filter pattern and light blocking pattern work together as a mediator to block leaked light, allowing the polarizers to maintain their non-overlapping configuration for slimness while preventing the harmful light leakage effect.
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 configuration effectively reduces light leakage at the edge of the display device, enhancing display quality by minimizing luminance in the non-overlapping region and maintaining the slimness of the display.
Implementation Method 1
a light blocking pattern which overlap each other
Implementation Method 2
a color filter pattern and a light blocking pattern which overlap each other
Data Source
AI summary
Provided is a display device. The display device includes a first substrate and a second substrate including a display area and a non-display area surrounding the display area. The first substrate and the second substrate face and are attached to each other. A first polarizer is disposed on the display area of the first substrate. A second polarizer is entirely disposed on the display area and the non-display area of the second substrate and has a non-overlapping region which does not overlap the first polarizer in the non-display area. A light leakage prevention pattern is disposed between the first substrate and the second substrate in the non-overlapping region of the first polarizer and the second polarizer and includes a color filter pattern and a light blocking pattern which overlap each other.