3D Display Panel Orthogonal Polarization Sub-Pixel Structure

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Solution Overview

Problem

Current 3D display techniques fail to effectively utilize binocular parallax to provide stereoscopic images, as they do not efficiently divide and project orthogonal polarization light for each eye, limiting the depth perception in 3D displays.

Innovation Solution

A 3D display panel is designed with each sub-pixel comprising a primary and secondary pixel, each paired with a light emission unit that emits orthogonal polarization light, allowing goggles to separate and combine images for each eye, using a stacked structure of anodes, hole and electron transportation layers, orientation layers, and emissive layers to produce vertically and horizontally polarized light.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If current 3D display techniques are used, then display functionality is provided, but binocular parallax cannot be effectively utilized to provide stereoscopic images

Engineering Contradiction:

Improvestereoscopic image perceptionVSAvoidbinocular parallax utilization

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

Each sub-pixel is divided into a primary pixel and a secondary pixel, with each pixel having its own light emission unit. This segmentation allows independent control of polarization states for left and right eye images, enabling effective utilization of binocular parallax to provide stereoscopic images.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If a single light emission unit is used per sub-pixel, then device complexity is reduced, but orthogonal polarization light cannot be produced for each eye

Engineering Contradiction:

Improvepolarization light separationVSAvoidlight emission unit structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The first and second light emission units are merged into a single sub-pixel structure, sharing common components such as the base plate, thin-film transistor, and encapsulation layers. This merging approach enables orthogonal polarization light production for each eye while reducing overall device complexity compared to completely separate emission units.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention introduces polarization orientation as an additional dimension of control within each sub-pixel. By orienting the light emissive layers at different angles (0 degrees for primary pixel, 90 degrees for secondary pixel), the system can produce orthogonal polarization light without adding significant structural complexity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Illumination intensity

If multiple light emission units are stacked per sub-pixel, then orthogonal polarization light is produced, but manufacturing precision requirements increase

Engineering Contradiction:

Improvepolarization light outputVSAvoidlayer alignment accuracy

Core Design Contradiction:

Illumination intensityVSManufacturing precision

Solution Approach 1:

The orientation layers are formed with predetermined orientations during the manufacturing process, establishing the polarization directions of the light emissive layers before final assembly. This preliminary action ensures correct polarization alignment without requiring high-precision alignment during subsequent manufacturing steps.

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

This configuration enables human eyes to perceive stereoscopic images by receiving different polarized light, enhancing depth perception through the combination of orthogonal polarization light from primary and secondary pixels.

Implementation Method 1

The first electrons and the first holes are recombined in the first light emissive layer to emit first polarization light. The second electrons and the second holes are recombined in the second light emissive layer to emit second polarization light.

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Implementation Method 2

The first orientation layer sets orientation of the first light emissive layer so that the first light emissive layer is in a first orientation state. The second orientation layer sets orientation of the second light emissive layer so that the second light emissive layer is in a second orientation state.

Methodology Applied

Scientific EffectOrientation effect:

Data Source

PatentUS9958698B23D displaly panel and 3D display device

Publication Date: 2018.05.01 TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD

AI summary

Disclosed are a 3D display panel and the 3D display device. The 3D display panel includes a base plate, a plurality of pixel units, and first and second light emission units. Each of the pixel units includes at least one the sub-pixel, which includes primary and secondary pixel respectively corresponding to the first and second light emission units. Each of the two light emission units includes an anode, a hole transportation layer, an orientation layer, a light emissive layer, an electron transportation layer, and a cathode that are sequentially stacked. In the first and second light emission units, the orientation layers set the orientations of the light emissive layers to first and second orientation states, respectively, and first and second electrons and first and second holes respectively generated by the cathodes and anodes are recombined in the light emissive layers to respectively emit first and polarization light, which are orthogonal.