Liquid Crystal Display Light Blocking Pattern for Moiré Suppression
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Solution Overview
Problem
Existing liquid crystal display devices experience moiré interference due to the interference between dark lines generated by liquid crystal molecules not rotating upon voltage application and the grid lines of the display panel, particularly when comb-teeth-shaped pixel electrodes are joined with bent signal lines.
Innovation Solution
A liquid crystal display device is designed with a first liquid crystal display panel and a second liquid crystal display panel, where the second panel includes a light blocking pattern with inclined lines and pixel electrodes with tooth portions and connectors that overlap the light blocking lines, reducing the number of dark lines formed when voltage is applied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If comb-teeth-shaped pixel electrodes are joined with bent signal lines, then the display function is improved, but moiré interference occurs due to dark lines generated where liquid crystal molecules do not rotate
Solution Approach 1:
The invention converts the harmful dark lines generated by bent signal lines into a beneficial pattern by intentionally designing light blocking patterns with the same shape and position as these dark lines. This transforms the moiré-causing dark lines into functional elements that define pixel regions and improve display quality without causing interference.
Solution Approach 2:
The invention divides the light blocking pattern into multiple segments corresponding to different pixel regions. Each light blocking pattern is positioned to overlap with dark lines generated by specific bent signal lines, effectively segmenting and controlling the dark line formation to prevent moiré interference while maintaining display functionality.
2Object-affected harmful factors
If light blocking patterns are added to suppress moiré, then moiré interference is reduced, but the aperture ratio may decrease due to additional light blocking structures
Solution Approach 1:
The invention merges the light blocking patterns with the existing pixel electrode structures and signal line layouts. The light blocking patterns are positioned to coincide with dark line formations and existing structural elements, combining multiple functions into unified structures that suppress moiré without significantly reducing the aperture ratio.
Solution Approach 2:
The invention applies light blocking patterns selectively in specific local regions where dark lines are generated by bent signal lines, rather than uniformly across the entire display. This localized approach suppresses moiré interference only where necessary, preserving the aperture ratio in other regions.
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 suppresses moiré interference and increases the aperture ratio of the second main pixel, leading to improved display quality and reduced recognition of color moiré.
Implementation Method 1
a light blocking pattern that is repeatedly arranged and has light blocking properties
Data Source
AI summary
A liquid crystal display device includes a first liquid crystal display panel, and a second liquid crystal display panel includes a light blocking pattern. The light blocking pattern includes a first light blocking line that extends in a predetermined direction, the first light blocking line including a first incline inclined with respect to the predetermined direction and a second incline inclined in a direction opposite the first incline with respect to the predetermined direction, and a second light blocking line that is adjacent to the first light blocking line and that is line-symmetrical, with respect to the predetermined direction, to the first light blocking line. The second liquid crystal display panel has a pixel electrode, the pixel electrode having a plurality of tooth portions and a connector that connects the plurality of tooth portions, and the connector overlaps the first light blocking line or the second light blocking line.