Viewing Angle Film Segmented Base and Attachment

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Solution Overview

Problem

Conventional viewing angle changing films for electronic display panels face challenges in manufacturing costs and functionality due to the need for a partially thin insertion edge, which can result in inadequate thickness and impaired viewing angle adjustment.

Innovation Solution

A protective film comprising a base film and an attachment film, where the attachment film has thinner protrusions that insert into an air gap between the display panel and bezel, allowing for effective viewing angle adjustment without complicating the base film's formation or processing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the protective film is made with a partially thin insertion edge to be inserted into the gap between display panel and bezel, then the film can be installed, but the manufacturing cost increases due to complex forming or processing

Engineering Contradiction:
Improvemanufacturing costVSAvoidfilm structure complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The protective film is divided into two separate components: a base film with uniform thickness that provides the viewing angle changing function, and a separate attachment film with thin protrusions that provides the insertion capability. This segmentation allows each component to be optimized independently, avoiding the need to complexly process the base film.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The insertion function is extracted from the base film and implemented through a separate attachment film. The attachment film's thin protrusions are specifically designed for insertion into the gap, while the base film maintains its uniform thickness and optical properties without complex forming or processing.

Inventive Principle:
Principle #2Taking out (Extraction)

2Length of stationary object

If the overall thickness of the viewing angle changing film is reduced to enable insertion into the gap, then the film can be installed, but the film fails to implement the correct function of changing the viewing angle

Engineering Contradiction:
Improvefilm thicknessVSAvoidviewing angle changing function
Core Design Contradiction:
Length of stationary objectVSReliability

Solution Approach 1:

The film system is segmented into a base film that maintains sufficient uniform thickness for viewing angle changing functionality, and a separate attachment film with thin protrusions for insertion. This ensures the base film's thickness is optimized for optical function while the attachment film handles the mechanical insertion requirement.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The attachment film acts as an intermediary component that bridges the gap between the thick base film (needed for optical function) and the thin profile (needed for insertion). The thin protrusions of the attachment film enable insertion into the limited gap space without compromising the base film's thickness.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Length of stationary object

If the base film is made thinner to reduce overall film thickness, then insertion becomes possible, but the base film loses its rigidity

Engineering Contradiction:
Improvebase film thicknessVSAvoidbase film rigidity
Core Design Contradiction:
Length of stationary objectVSStrength

Solution Approach 1:

The system separates the structural support function from the insertion function. The base film maintains its uniform thickness and rigidity for structural integrity and optical function, while the separate attachment film provides the thin protrusions needed for insertion, eliminating the need to thin the base film.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS10678306B2Viewing angle changing film
Publication Date: 2020.06.09 LENOVO SWITZERLAND INTERNATIONAL GMBH
  • US10678306B2 patent drawing
  • US10678306B2 patent drawing
  • US10678306B2 patent drawing

AI summary

A viewing angle changing film capable of changing the viewing angle of a display panel is provided. The viewing angle changing film includes a base film opposed to a display panel, and an attachment having a thickness smaller than a thickness of the base film. The base film can change the viewing angle of the display panel. The attachment is inserted into air gap defined between the display panel and a bezel. The attachment is a separate member from the base film, and is fixed to the base film.