Segmented Light Shield for Display Area Static Electricity Control
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Solution Overview
Problem
Display devices with multiple display areas on the same substrate are prone to defects due to external electric charges, which deteriorate display quality, as the conductivity of light shields can lead to unexpected charging.
Innovation Solution
The implementation of a light shield with separate slits surrounding each display area, preventing external static electricity from reaching the display areas and maintaining even liquid crystal material distribution between them, thereby reducing display defects and quality deterioration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a light shield with conductivity is used to surround display areas, then the light shield can effectively block external light, but the display area may be charged by unexpected electric charge from outside, causing display defects
Solution Approach 1:
The light shield is divided into multiple separate light shields, each surrounding a specific display area. The light shields are not electrically connected to each other, which prevents the accumulation and transmission of static electricity across multiple display areas while maintaining light blocking functionality for each individual area.
2Productivity
If multiple display areas are provided on the same substrate, then the productivity is improved, but the display quality deteriorates due to static electricity-induced defects
Solution Approach 1:
Multiple display areas are provided on the same substrate, each surrounded by its own separate light shield. This segmentation isolates each display area electrically, preventing static electricity from affecting multiple areas simultaneously, thereby maintaining display quality while enabling multi-display functionality.
Solution Approach 2:
A non-conductive layer is provided between adjacent light shields to prevent electrical connection and static electricity transfer between display areas. This intermediary layer acts as an electrical insulator while allowing the light shields to maintain their light blocking function, thus protecting display quality across multiple display areas.
3Reliability
If a light shield is provided around each display area, then the display quality is improved by blocking external light, but the device complexity increases
Solution Approach 1:
Each light shield serves multiple functions: it blocks external light from the specific display area it surrounds and acts as an electrical isolation barrier to prevent static electricity accumulation. This multi-functionality reduces the need for additional separate components, thereby managing device complexity while maintaining display quality.
Data Source
AI summary
A display device is provided and includes first display area in which first pixel is provided; second display area in which second pixel is provided, second display area provided next to first display area; light shield surrounding first and second display areas, light shield having first slit surrounding first display area and second slit surrounding second display area; first sealant surrounding first and second display areas; and second sealant located between first and second display areas, second sealant having at least one opening which communicates first and second display areas to each other; wherein first slit is provided along first and second sealants and second slit is provided along first and second sealants, and part of first and second slits are parallelly extended along opening between first and second display areas.