Anti-Peep Display Module Using Birefringent Substrates

Solution Overview

Problem

Current display apparatuses with anti-peep functions require multiple electronic privacy sheets, leading to increased thickness and weight, which limits their applicability in portable products.

Innovation Solution

A display apparatus design incorporating a display panel with an anti-peep module comprising substrates made of birefringent materials and liquid crystal layers, along with polarizers, allowing for reduced thickness and weight while maintaining anti-peep performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If two sets of electronic privacy sheets are employed to achieve better anti-peep effect, then anti-peep performance is improved, but overall thickness and weight significantly increase

Engineering Contradiction:

Improveanti-peep performanceVSAvoiddisplay apparatus weight

Core Design Contradiction:

ReliabilityVSWeight of stationary object

Solution Approach 1:

The patent merges the anti-peep function with the display panel structure by integrating liquid crystal layers and polarizers directly into the panel assembly. This consolidation eliminates the need for separate electronic privacy sheets while maintaining anti-peep functionality, thereby reducing overall weight and thickness.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent employs composite material structures combining liquid crystal layers with polarizers and substrates to create an integrated anti-peep module. This composite approach replaces traditional glass-based electronic privacy sheets, achieving comparable anti-peep performance with reduced weight and thickness.

Inventive Principle:

Principle #40Composite materials

2Reliability

If two sets of electronic privacy sheets are employed to achieve better anti-peep effect, then anti-peep performance is improved, but overall thickness significantly increase

Engineering Contradiction:

Improveanti-peep performanceVSAvoiddisplay apparatus thickness

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent merges the anti-peep function with the display panel structure by integrating liquid crystal layers and polarizers directly into the panel assembly. This consolidation eliminates the need for separate electronic privacy sheets while maintaining anti-peep functionality, thereby reducing overall weight and thickness.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent utilizes thin film structures for the liquid crystal layers and polarizers, replacing thick glass substrates with thin flexible films. This enables the anti-peep module to achieve equivalent protection with significantly reduced thickness, making it suitable for portable devices.

Inventive Principle:

Principle #30Flexible shells and thin films

3Reliability

If additional polarizers and electronic privacy sheets are added to enhance anti-peep effect, then anti-peep performance is improved, but device complexity increase

Engineering Contradiction:

Improveanti-peep performanceVSAvoiddisplay apparatus structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the anti-peep function with the display panel structure by integrating liquid crystal layers and polarizers directly into the panel assembly. This consolidation eliminates the need for separate electronic privacy sheets while maintaining anti-peep functionality, thereby reducing overall weight and thickness.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent designs the display panel to serve multiple functions: display functionality and anti-peep protection. By integrating the liquid crystal layers and polarizers into the panel structure, the same component achieves both display and privacy protection functions, reducing the need for separate dedicated anti-peep components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 design achieves equivalent anti-peep performance with reduced thickness and weight, enhancing portability and design flexibility of display devices.

Implementation Method 1

a first liquid crystal layer, a second liquid crystal layer

Methodology Applied

Scientific EffectLiquid crystal orientation: Liquid Crystals

Implementation Method 2

a first polarizer, a second polarizer and a third polarizer

Methodology Applied

Scientific EffectPolarization: Polarisation

Implementation Method 3

At least two of the first substrate, the second substrate, the third substrate and the fourth substrate each have birefringence

Methodology Applied

Scientific EffectBirefringence: Birefringence

Data Source

PatentUS20260010024A1Display apparatus

Publication Date: 2026.01.08 CORETRONIC CORPORATION

AI summary

A display apparatus including a display panel and an anti-peep module is provided. The anti-peep module is disposed on one side of a display surface of the display panel and overlaps the display surface. The anti-peep module includes a first polarizer, a first substrate, a first liquid crystal layer, a second substrate, a second polarizer, a third substrate, a second liquid crystal layer, a fourth substrate and a third polarizer sequentially arranged on the display surface of the display panel. The first polarizer is disposed between the first substrate and the display panel. The second polarizer is disposed between the second substrate and the third substrate. The third polarizer is disposed on one side of the fourth substrate facing away from the third substrate. At least two of the first substrate, the second substrate, the third substrate and the fourth substrate each have birefringence.