Integrated Polarized Patterns in Display Panels

Solution Overview

Problem

Existing display panel manufacturing processes require additional polarizing films on the outer sides of substrates, increasing costs and production time.

Innovation Solution

Incorporating first polarized patterns between the substrates and the liquid crystal layer, eliminating the need for external polarizing films by aligning them perpendicular to the substrate's electrodes, which are formed using techniques like nano-imprint processes, reducing manufacturing costs and enhancing liquid crystal efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If additional polarizing films are attached to outer sides of substrates, then polarizing function is achieved, but manufacturing cost and production time increase

Engineering Contradiction:

Improvepolarizing functionVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent combines the polarizing function with the existing alignment film that is already part of the liquid crystal display structure. Instead of adding a separate polarizing film, the alignment film is designed to provide both alignment and polarizing functions, thereby merging two components into one and eliminating the need for additional polarizing films on substrate outer sides.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The alignment film is given multiple functions: it serves both as the alignment film that orients liquid crystal molecules and as the polarizing film that controls light polarization. This multi-functional design eliminates the need for separate polarizing films, reducing manufacturing complexity and cost.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If additional polarizing films are attached to outer sides of substrates, then polarizing function is achieved, but production time increases

Engineering Contradiction:

Improvepolarizing functionVSAvoidproduction time

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent combines the polarizing function with the existing alignment film that is already part of the liquid crystal display structure. Instead of adding a separate polarizing film, the alignment film is designed to provide both alignment and polarizing functions, thereby merging two components into one and eliminating the need for additional polarizing films on substrate outer sides.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The polarizing function is built into the alignment film during the initial fabrication process, before the liquid crystal assembly is completed. This preliminary incorporation of the polarizing function eliminates the need for subsequent steps of attaching separate polarizing films, thereby reducing production time.

Inventive Principle:

Principle #10Preliminary action

3Ease of manufacture

If first polarized patterns are disposed between substrate and opposite substrate, then external polarizing films are eliminated, but alignment precision must be maintained

Engineering Contradiction:

Improvemanufacturing processVSAvoidalignment precision

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent combines the polarizing function with the existing alignment film that is already part of the liquid crystal display structure. Instead of adding a separate polarizing film, the alignment film is designed to provide both alignment and polarizing functions, thereby merging two components into one and eliminating the need for additional polarizing films on substrate outer sides.

Inventive Principle:

Principle #5Merging (Combining)

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

This approach reduces manufacturing costs, increases yield, and achieves better polarizing effects and liquid crystal efficiency by eliminating the need for external polarizing films and aligning the polarized patterns differently than the slits in the pixel array.

Implementation Method 1

A polarizing film is a component allowing only the light polarized toward a specific direction to pass through and absorbing the polarized light along the specific direction, such that non-polarized light is converted into polarized light

Methodology Applied

Scientific EffectPolarization: Polarisation

Implementation Method 2

The liquid crystal layer is disposed between the substrate and the opposite substrate

Methodology Applied

Scientific EffectLiquid crystal optical modulation: Liquid Crystals

Data Source

PatentUS10809561B2Display panel

Publication Date: 2020.10.20 AU OPTRONICS CORP

AI summary

A display panel includes a substrate, an opposite substrate opposite to the substrate, a liquid crystal layer disposed between the substrate and the opposite substrate, a pixel array disposed between the substrate and the liquid crystal layer, and first polarized patterns. The pixel array includes a plurality of scan lines, a plurality of data lines, a plurality of active devices, and a plurality of first electrodes. The active devices are electrically connected to the scan lines and the data lines. The first electrodes are disposed on the substrate. Each of the first electrodes includes a plurality of slits. The first polarized patterns overlap with the first electrodes in a direction perpendicular to the substrate. The first polarized patterns are disposed between the substrate and the opposite substrate. An extending direction of the first polarized patterns is different from an extending direction of the slits.