Arched Electrode Liquid Crystal Display for 2D to 3D Switching

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Solution Overview

Problem

Existing liquid crystal display devices cannot automatically switch between 2D and 3D video formats, requiring users to wear 3D glasses for 3D viewing and lacking convenience in switching between formats.

Innovation Solution

A liquid crystal display module with a 2D/3D conversion adjustment unit comprising a planar and non-planar electrode between glass substrates, where the electrodes receive voltage signals to create a vertical electric field, orienting liquid crystals and altering light propagation for 2D or 3D image display, utilizing arched electrodes for varying liquid crystal thickness and phase delay.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If passive 3D display technology is used, then 3D visual effect is achieved, but users need to wear 3D glasses which increases cost and causes discomfort

Engineering Contradiction:

Improve3D visual effectVSAvoiduser convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The invention extracts and removes the 3D glasses from the viewing system by implementing the light separation function directly in the display device through a beam splitting plate, allowing users to view 3D content with naked eyes

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The beam splitting plate acts as an intermediary optical element that separates light paths for left and right eyes, enabling 3D visualization without requiring external 3D glasses

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If passive 3D display technology is used, then 3D visual effect is achieved, but purchase cost increases due to matched 3D glasses

Engineering Contradiction:

Improve3D visual effectVSAvoidpurchase cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The beam splitting plate is integrated into the display device structure, merging the 3D light separation function with the display system itself, eliminating the need for separate 3D glasses

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If existing 3D playback devices are used, then 3D video playback is achieved, but automatic switching between 2D and 3D formats is not available

Engineering Contradiction:

Improve3D video playbackVSAvoidformat switching capability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system dynamically adjusts the state of the liquid crystal layer through voltage control, enabling automatic switching between 2D and 3D playback modes based on the video format being played

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The display device achieves multi-functionality by incorporating a beam splitting plate and controllable liquid crystal layer, enabling it to play both 2D and 3D video formats automatically without requiring separate devices

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

Enables seamless switching between 2D and 3D images without the need for glasses, offering a simple, cost-effective, and user-friendly solution with good switching effects, allowing both 2D and 3D image display capabilities.

Implementation Method 1

the liquid crystal is disposed between the planar electrode and the non-planar electrode... the liquid crystal located therebetween would be deflected/orientated toward a vertical direction

Methodology Applied

Scientific EffectLiquid crystal orientation change: Liquid Crystals

Implementation Method 2

the vertically orientated liquid crystal would produce a phase delay for the incident light rays

Methodology Applied

Scientific EffectPhase delay: Birefringence

Implementation Method 3

the planar electrode and the non-planar electrode respectively are adapted for receiving voltage signals with reverse polarities so as to form a vertical electric field between the planar electrode and the non-planar electrode

Methodology Applied

Scientific EffectElectric field: Electric Field

Implementation Method 4

a shape of an end surface of the non-planar electrode includes continuous arches... different positions of the liquid crystal layer have different thicknesses

Methodology Applied

Scientific EffectArched electrode geometry: Geometry

Implementation Method 5

incident light rays from the backlight unit can pass through the 2D/3D conversion adjustment unit without being affected... the parallel incident light rays would change their propagation directions

Methodology Applied

Scientific EffectLight propagation: Light

Data Source

PatentUS9784981B2Liquid crystal display device and liquid crystal display module thereof

Publication Date: 2017.10.10 WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD

AI summary

The invention provides a liquid crystal display module for realizing a switching between 2D and 3D switching and a liquid crystal display device thereof. The liquid crystal display module includes a backlight unit, a liquid crystal display unit and a 2D/3D conversion adjustment unit successively stacked and parallel with one another. The liquid crystal display device and the liquid crystal display module provided by the invention use the arched electrode structural design to make different positions of the liquid crystal layer have different thicknesses. By applying voltages on the electrodes or not to realize the switching between 2D and 3D images, so that the liquid crystal display device is endowed with both functions of playing 2D and 3D images.