Electrochromic Viewing-Angle Layer Sealing for Bezel-Less Displays
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Solution Overview
Problem
The viewing-angle adjustment members in display apparatuses are vulnerable to external impacts and moisture penetration, especially in bezel-less designs, leading to damage and loss of viewing-angle control ability, and the process of applying sealing agents is time-consuming, affecting productivity and durability.
Innovation Solution
A display apparatus design featuring a viewing-angle adjustment member with a first and second electrode film, electrochromic zone, and electrochromic pattern, along with first and second dams, minimizes the size of the outer sealing portion and optimizes the application of the sealing agent, reducing damage and process time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a side sealing portion with sufficient thickness and area is used to protect the electrophoretic ink and louver mold, then durability and protection against moisture penetration are improved, but the bezel size increases and bezel-less design is compromised
Solution Approach 1:
The patent applies a thin film sealing agent (acrylic-based resin) to create a protective sealing layer between the viewing-angle adjustment member and display panel. This thin film provides moisture protection and sealing functionality without requiring a thick side sealing portion, thereby enabling bezel-less design while maintaining durability.
2Reliability
If the viewing-angle adjustment member is protected from external impact and moisture penetration, then durability is improved, but the application process becomes time-consuming and productivity decreases
Solution Approach 1:
The patent combines multiple functions into the sealing agent: it simultaneously provides moisture sealing, impact protection, and adhesive bonding between the viewing-angle adjustment member and display panel. This integration eliminates the need for separate protective structures and simplifies the application process, improving productivity while maintaining durability.
Solution Approach 2:
The patent specifies particular parameters for the sealing agent including acrylic-based resin composition, thickness of 1-10 micrometers, and specific application methods. These parameter optimizations enable fast application and curing processes that improve productivity while ensuring adequate protection against moisture and impact.
3Reliability
If a partitioning wall or dam is formed in the viewing-angle adjustment member for sealing, then protection against moisture penetration is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent extracts the sealing function from the structural components (partitioning wall or dam) and implements it through a separate sealing agent layer. This separation allows the viewing-angle adjustment member to maintain its simple electrochromic structure while the sealing agent provides the necessary moisture protection, reducing manufacturing complexity.
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 design achieves a bezel-less display with improved durability and reduced defects, while enabling faster and more efficient application of the sealing agent, enhancing productivity and maintaining viewing-angle control functionality.
Implementation Method 1
an electrochromic pattern which is disposed in the electrochromic zone
Data Source
AI summary
A display apparatus can include a display panel, a polarizing film disposed on a top face of the display panel, a viewing-angle adjustment member disposed on a top face of the polarizing film, a touch panel disposed on a top face of the viewing-angle adjustment member, and a heat dissipation plate attached to a bottom face of the display panel. The viewing-angle adjustment member can include a first electrode film, a second electrode film, and an electrochromic zone disposed between the first electrode film and the second electrode film. An electrochromic pattern is disposed in the electrochromic zone. Thus, the display apparatus can have a bezel-less or bezel-free shape in which an outer sealing portion of the viewing-angle adjustment member corresponding to a plurality of users is minimized.