Smartphone Camera Window Glass Print Pattern Manufacturing

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Solution Overview

Problem

Conventional window-glass for smartphone cameras has simple pattern shapes due to etching, resulting in inferior decorativeness and design quality.

Innovation Solution

A method involving cell-cutting line fabrication, sheet cutting, sheet tempering, print pattern formation, AR deposition, AF deposition, and cell separation processes to create complex patterns on window-glass, including rings, dots, and curves, using laser cutting, potassium nitrate tempering, and multi-layer deposition techniques.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If etching work is used to form patterns on window-glass, then the manufacturing process is simple, but the pattern shape and form become simple, resulting in inferior decorativeness and design quality

Engineering Contradiction:
Improvemanufacturing process simplicityVSAvoidpattern shape complexity
Core Design Contradiction:
Ease of manufactureVSShape

Solution Approach 1:

The patent replaces the conventional mechanical/chemical etching process with a printing process. Specifically, it uses a printing machine to directly form patterns on the glass surface, substituting the mechanical etching system with a printing system that can reproduce complex shapes and designs more effectively.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental parameter of pattern formation from etching (removal of material) to printing (deposition or modification of material). This parameter change enables the formation of diverse pattern shapes including rings, dots, curves, and designs while maintaining manufacturing feasibility through the printing process.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If etching work is used to form patterns on window-glass, then the manufacturing process is simple, but the design quality and decorativeness become inferior

Engineering Contradiction:
Improvemanufacturing process simplicityVSAvoidpattern design quality
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent replaces the mechanical/chemical etching process with a printing process. Specifically, it uses a printing machine to directly form patterns on the glass surface, substituting the mechanical etching system with a printing system that can reproduce complex shapes and designs more effectively.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental parameter of pattern formation from etching (removal of material) to printing (deposition or modification of material). This parameter change enables the formation of diverse pattern shapes including rings, dots, curves, and designs while maintaining manufacturing feasibility through the printing process.

Inventive Principle:
Principle #35Parameter changes

3Shape

If multiple processes (sheet cutting, tempering, deposition) are added to create complex patterns, then pattern diversity is improved, but the manufacturing process complexity increases

Engineering Contradiction:
Improvepattern diversityVSAvoidmanufacturing process complexity
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The patent segments the manufacturing process into distinct functional stages: sheet cutting process, sheet tempering process, print pattern formation process, AR deposition process, and AF deposition process. Each segment performs a specific function, allowing for modular complexity management while achieving diverse pattern creation capabilities.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent performs preliminary actions in sequence: first cutting the glass disk into sheets, then tempering them to increase surface stress, and only after these preparatory steps does it proceed to pattern formation through printing. This sequential preliminary action approach ensures the glass is properly prepared for subsequent pattern processing.

Inventive Principle:
Principle #10Preliminary action

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

Enables the implementation of various patterns and designs on window-glass, enhancing decorativeness and design quality while maintaining light transmittance and preventing fingerprint contamination.

Implementation Method 1

a sheet cutting process for cutting the glass disk into units of sheets consisting of a large number of glass cells by a laser

Methodology Applied
Scientific EffectLaser ablation: Laser Ablation

Implementation Method 2

a sheet tempering process for increasing a surface stress of a glass sheet by potassium nitrate and allowing the cell-cutting lines to be clearly formed

Methodology Applied
Scientific EffectChemical tempering:

Implementation Method 3

an AR deposition process for forming an AR deposition layer to increase transmittance and reduce reflectance in a rear transmission area of each glass cell

Methodology Applied
Scientific EffectAnti-reflective coating: Anti-Reflective Coating

Implementation Method 4

an AF deposition process for forming an AF deposition layer on a front portion of each glass cell to prevent fingerprint and foreign matter contamination

Methodology Applied
Scientific EffectAnti-fingerprint coating:

Data Source

PatentUS11905200B2Method of manufacturing window-glass having print pattern for smartphone camera
Publication Date: 2024.02.20 JNTC
  • US11905200B2 patent drawing
  • US11905200B2 patent drawing
  • US11905200B2 patent drawing

AI summary

The present invention relates to a method of manufacturing a window-glass having a print pattern for a smartphone camera, and has an object of enabling various patterns such as rings, dots, curves, and designs to be implemented within the printable extent on a window-glass for a camera.That is, the present invention provides a method of manufacturing a window-glass for a smartphone camera, comprising a cell-cutting line fabrication process for forming cell-cutting lines on a glass disk for cell separation, a sheet cutting process for cutting the glass disk into units of sheets consisting of a large number of glass cells by a laser, a sheet tempering process for increasing a surface stress of a glass sheet by potassium nitrate and allowing the cell-cutting lines to be clearly formed, a print pattern formation process for forming a pattern on the window-glass through printing, an AR deposition process for forming an AR deposition layer to increase transmittance and reduce reflectance in a rear transmission area of each glass cell, an AF deposition process for forming an AF deposition layer on a front portion of each glass cell to prevent fingerprint and foreign matter contamination, and a cell separation process for separating cells along the cell-cutting lines by pushing the glass cells in units of sheets up or down.Therefore, the present invention has an effect of enabling various patterns such as rings, dots, curves, and designs to be implemented within the printable extent on a window-glass for a camera.