Display Device Blocking Hole Insulating Film Bezel Reduction
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Solution Overview
Problem
Conventional display devices face a reduction in display area due to increased bezel or non-display areas, which accommodate components like cameras, speakers, and sensors, limiting their thinness, lightness, and portability.
Innovation Solution
A display device design featuring a substrate with hole areas within the emission region and blocking holes through inorganic insulating films beneath light emitting elements, where the side surfaces of the upper inorganic insulating film protrude beyond those of the lower film, minimizing the bezel area and disconnecting the light emitting stack.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If components (camera, speaker, sensor) are disposed in the non-display area, then these components can be accommodated, but the bezel area increases and display area is reduced
Solution Approach 1:
The patent moves components from the traditional planar non-display area (2D boundary region) into the 3D space created by hole areas penetrating through multiple layers of the display structure. This vertical integration allows components to be positioned within the emission area without increasing the horizontal bezel dimensions, effectively utilizing the Z-dimension to resolve the space conflict.
Solution Approach 2:
The patent implements a nested structure where hole areas penetrate through the substrate, inorganic insulating films, and light emitting element layers, creating vertical channels that accommodate components. This nested arrangement allows multiple structural layers to be integrated around the component housing, maximizing space utilization within the emission area while maintaining a compact overall form factor.
2Area of stationary object
If hole areas are disposed within the emission area, then the bezel area is reduced, but moisture and static electricity may intrude into the light emitting element
Solution Approach 1:
The patent introduces an inorganic insulating film as an intermediary barrier material that fills and seals the hole areas. This insulating film acts as a mediator between the external environment and the light emitting element, providing electrical insulation and moisture protection while allowing the hole structure to maintain its space-saving function. The insulating film prevents harmful factors from traversing the hole pathway to reach sensitive components.
Solution Approach 2:
The patent employs composite material structures combining organic and inorganic insulating films in multiple layers. The inorganic insulating film provides barrier properties against moisture and static electricity, while the organic insulating film provides additional sealing and structural support. This composite approach creates a multi-functional barrier system that addresses both protection requirements while maintaining the reduced bezel design.
3Length of moving object
If the device is made thinner for enhanced portability, then portability is improved, but structural durability against bending stress deteriorates
Solution Approach 1:
The patent segments the insulating film structure into multiple distinct layers (organic insulating film and inorganic insulating film) with different material properties and functions. This segmentation allows each layer to be optimized for specific requirements: the organic film provides flexibility and stress distribution, while the inorganic film provides rigid barrier protection. The layered segmentation enables the thin structure to maintain durability through distributed stress management rather than relying on a single thick layer.
Solution Approach 2:
The patent changes the material parameters and structural configuration of insulating layers to achieve optimal balance between thinness and strength. By selecting specific organic and inorganic materials with complementary mechanical and barrier properties, and by optimizing layer thicknesses and sequences, the patent creates a multi-layer composite structure that provides enhanced bending resistance despite reduced overall thickness. This parameter optimization allows the device to achieve both thinness for portability and sufficient structural integrity.
Data Source
AI summary
A display device capable of reducing a non-display area includes a substrate including at least one hole area disposed within an emission area, and at least one blocking hole passing through inorganic insulating films disposed beneath a light emitting element while including upper and lower insulating films made of different materials. Side surfaces of the upper inorganic insulating film exposed through the blocking hole protrude beyond side surfaces of the lower inorganic insulating film exposed through the blocking hole, respectively. Accordingly, it is possible to minimize a bezel area, which is a non-display area, and to disconnect a light emitting stack by the blocking hole.