Display Panel Sealing Structure for Narrow Frame Moisture Control
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Solution Overview
Problem
The challenge is to effectively absorb moisture in display panels with narrower frames, where reducing the desiccant amount leads to insufficient moisture absorption and potential contact between the light-emitting element and desiccant, hindering light emission.
Innovation Solution
A display panel configuration with a first and second sealing wall, desiccant material, and protective material, where the second sealing wall covers part of the display unit's surface opposite the substrate, preventing contact and allowing efficient moisture absorption even with a reduced desiccant amount.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the amount of desiccant is reduced to narrow the frame, then the frame width is reduced, but the moisture absorption capability becomes insufficient
Solution Approach 1:
The patent implements a nested structure where the light-emitting element is positioned within a cavity formed by the first and second sealing walls, and the desiccant is placed in the space between these sealing walls. This nesting arrangement allows the desiccant to be efficiently positioned near the light-emitting element without increasing the overall frame width, resolving the contradiction between compact frame size and effective moisture absorption.
Solution Approach 2:
The patent transitions from a conventional planar arrangement to a three-dimensional structure by forming a cavity between the first sealing wall (on the substrate) and the second sealing wall (covering the light-emitting element). This dimensional change allows the desiccant to occupy the vertical space between sealing walls, maximizing moisture absorption capability within a reduced frame width.
2Reliability
If the amount of desiccant is increased to improve moisture absorption, then the moisture absorption capability is improved, but the light-emitting element may contact the desiccant which hinders light emission
Solution Approach 1:
The patent divides the sealing structure into two separate sealing walls: the first sealing wall on the substrate and the second sealing wall covering the light-emitting element. This segmentation creates a defined cavity that spatially separates the desiccant from the light-emitting element, preventing contact while maintaining effective moisture absorption. The segmentation principle resolves the contradiction by structurally isolating the two components.
Solution Approach 2:
The second sealing wall acts as an intermediary barrier between the desiccant and the light-emitting element. It allows the desiccant to be positioned close to the light-emitting element for effective moisture absorption while preventing direct contact that would hinder light emission. The intermediary structure resolves the contradiction by mediating the spatial relationship between the two components.
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 ensures effective moisture absorption and maintains light emission by positioning the desiccant close to the display unit without contacting the light-emitting element, even with a narrower frame.
Implementation Method 1
a desiccant which surrounds the first sealing wall
Data Source
AI summary
A display panel includes: a first substrate; a display unit disposed on a principal surface of the first substrate; a first sealing wall disposed in a frame shape on the principal surface of the first substrate, along an outer periphery of the first substrate; a second sealing wall disposed in a frame shape on the principal surface of the first substrate, along an outer periphery of the display unit; a desiccant material filled between the first sealing wall and the second sealing wall; a protective material filled on the display unit, in a region surrounded by the second sealing wall; and a second substrate. The second sealing wall covers at least a portion of a surface of the display unit opposite a surface of the display unit which is in contact with the first substrate.