Naked-eye Stereoscopic Display Rescue Line Design

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Solution Overview

Problem

The manufacturing yield and cost of naked-eye type stereoscopic displays are hindered by the yield and reliability issues of the polarization switching panel and lenticular lens array, which affect the overall production of these displays.

Innovation Solution

Incorporating a rescue line design into the polarization switching panel, featuring a liquid crystal layer between substrates with conductive patterns and electrodes, and a lens array with birefringent lens portions, to enhance the reliability and reduce scrap rates.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a polarization switching panel and lenticular lens array are configured in front of a display panel to enable naked-eye stereoscopic display, then stereoscopic image capability is achieved, but manufacturing yield and cost are adversely affected due to multiple component requirements

Engineering Contradiction:

Improvestereoscopic image capabilityVSAvoidmanufacturing yield

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent combines the polarization switching function and lenticular lens array into an integrated panel structure, where the lenticular lens array is formed directly on the polarization switching panel. This merging of components eliminates the need for separate assembly of multiple independent components, thereby improving manufacturing yield while maintaining stereoscopic display capability.

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If a polarization switching panel and lenticular lens array are configured in front of a display panel to enable naked-eye stereoscopic display, then stereoscopic image capability is achieved, but manufacturing cost increases due to multiple components

Engineering Contradiction:

Improvestereoscopic image capabilityVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges the polarization switching panel and lenticular lens array into a single integrated structure, reducing the total component count and assembly complexity. This integration directly lowers manufacturing costs by eliminating separate production and assembly processes for individual components.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The integrated panel serves multiple functions simultaneously: it acts as both the polarization switching panel and the lenticular lens array. This multi-functionality reduces the need for separate dedicated components, thereby reducing overall manufacturing cost while maintaining full stereoscopic display functionality.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Ease of manufacture

If conventional conductive patterns are used in the polarization switching panel, then manufacturing is simple, but reliability is low due to lack of defect repair capability

Engineering Contradiction:

Improveconductive pattern fabricationVSAvoidpanel reliability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent incorporates rescue lines during the initial fabrication of the conductive pattern, before the panel is assembled and deployed. These rescue lines are pre-configured alternative conductive paths that can be activated if defects occur in the main conductive pattern, thereby improving reliability without complicating the manufacturing process.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The rescue lines serve as a preemptive measure against potential conductive pattern failures. By building in alternative pathways during manufacturing, the design cushions against future reliability issues, allowing defect repair without requiring complex post-manufacturing modifications.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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

Significantly reduces the scrap rate of the polarization switching panel and improves the yield of naked-eye type stereoscopic displays by enabling effective repair of defects and maintaining image quality.

Implementation Method 1

The liquid crystal layer is configured between the first substrate and the second substrate

Methodology Applied

Scientific EffectLiquid crystal: Liquid Crystals

Implementation Method 2

The polarization switching panel includes a first substrate, a second substrate, and a liquid crystal layer

Methodology Applied

Scientific EffectPolarization switching: Polarisation

Implementation Method 3

a lens array with birefringent lens portions

Methodology Applied

Scientific EffectBirefringence: Birefringence

Data Source

PatentUS8582039B2Naked-eye type stereoscopic display

Publication Date: 2013.11.12 AU OPTRONICS CORP

AI summary

A naked-eye type stereoscopic display including a display panel, a polarization switching panel, and a lens array is provided. The display panel provides an image having a first polarization state. The polarization switching panel and the lens array are disposed on a propagation path of the image, and the polarization switching panel is located between the lens array and the display panel. In addition, the polarization switching panel has at least one rescue line so as to lower the scrap rate of the polarization switching panel.