Flat Panel Display Protection Window Recessed Resin Anchoring

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Solution Overview

Problem

Conventional flat panel display devices with protection windows suffer from reduced visibility due to light reflections at air gaps between the protection window and the display panel, and existing solutions using transparent films or resins face issues with adhesion, uniformity, and stability, leading to defects and increased production costs.

Innovation Solution

A flat panel display device design featuring a protection window member with recessed areas and ink layers, where the edges of a transparent film or resin are disposed within these recesses, providing a stable and uniform interface that eliminates air gaps and enhances adhesion, thereby improving visibility and reducing assembly complexities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a transparent film or resin is used to remove the air gap between the protection window and display panel, then visibility is improved, but the transparent film easily slips or comes apart and the resin slides outside the protection window

Engineering Contradiction:
ImprovevisibilityVSAvoidadhesion stability
Core Design Contradiction:
Illumination intensityVSReliability

Solution Approach 1:

The patent introduces a recess structure that extends in the thickness direction (z-axis) of the protection window, creating a three-dimensional configuration. This recess receives and anchors the transparent film or resin, preventing it from slipping laterally. The edges of the transparent film or resin are positioned within the recess, providing mechanical constraint in the planar directions while maintaining optical transparency.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The recess acts as an intermediary structural element between the protection window and the transparent film/resin. It provides a dedicated receiving space that mediates the connection, ensuring the transparent material remains properly positioned without directly adhering to the entire surface of the protection window, thus preventing slippage while maintaining visibility.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Illumination intensity

If resin is used to fill the air gap, then visibility is improved, but it is difficult to control the uniformity of the thickness of the resin due to its fluidity

Engineering Contradiction:
ImprovevisibilityVSAvoidthickness uniformity
Core Design Contradiction:
Illumination intensityVSManufacturing precision

Solution Approach 1:

The recess structure extends in the thickness direction of the protection window, creating vertical walls that confine the resin laterally. This three-dimensional configuration prevents the resin from spreading uncontrollably in the planar directions, ensuring uniform thickness distribution. The resin fills the recess space between the protection window and display panel, maintaining consistent gap elimination without lateral displacement.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The recess provides localized confinement for the resin specifically in the area where gap elimination is needed. The walls of the recess create localized boundaries that control resin flow and positioning, ensuring uniform thickness in the critical display area while allowing the resin to be contained precisely where required.

Inventive Principle:
Principle #3Local quality

3Illumination intensity

If the transparent film is attached to the protection window, then the air gap is removed and visibility is improved, but the transparent film easily slips or comes apart increasing defects

Engineering Contradiction:
ImprovevisibilityVSAvoidassembly complexity
Core Design Contradiction:
Illumination intensityVSDevice complexity

Solution Approach 1:

The recess structure creates a three-dimensional anchoring configuration where the transparent film is received within the recess space. The edges of the film are positioned within the recess walls, providing mechanical interlocking that prevents slippage. This eliminates the need for complex additional fastening mechanisms or adhesives, simplifying the assembly process while ensuring reliable attachment.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The recess structure provides self-contained anchoring for the transparent film through its geometric configuration. The film's edges are naturally constrained by the recess walls, creating a self-securing mechanism that does not require additional fasteners, adhesives, or complex assembly steps. The structure serves its own attachment function through its three-dimensional form.

Inventive Principle:
Principle #25Self-service

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 reduces light reflections, enhances adhesion stability, and simplifies the assembly process, resulting in improved visibility and reduced production defects and costs by ensuring the transparent film or resin remains securely attached and uniformly positioned.

Implementation Method 1

When a light ray is passing through two layers contacting each other and having different refractive indices, a portion of the light ray is reflected in the boundary of the two layers. This phenomenon can be explained by Snell's Law.

Methodology Applied
Scientific EffectLight reflection: Reflection

Implementation Method 2

The refractive indices of the protection window and the display panel are greater than the refractive index of the air.

Methodology Applied
Scientific EffectRefraction: Refraction

Data Source

PatentUS8451554B2Flat panel display device and method for producing the same
Publication Date: 2013.05.28 SAMSUNG DISPLAY CO LTD
  • US8451554B2 patent drawing
  • US8451554B2 patent drawing
  • US8451554B2 patent drawing

AI summary

A flat panel display device includes a display module, a protection window member and a layer disposed in an area between the protection window member and a display area of the display module. The protection window member includes a stepped portion within which the layer is disposed. The stepped portion may include a recess or a plurality of layers.