Rotating Display Voxel Uniformity via Localized Refresh Control

Solution Overview

Problem

Existing rotating display technologies suffer from uneven voxel distribution and brightness due to the persistence-of-vision effect, leading to suboptimal three-dimensional image display without the need for 3D glasses.

Innovation Solution

A rotating display apparatus with a pixel array that adjusts refresh frequencies of pixel columns based on their distance from the rotation axis, ensuring a more even voxel distribution by increasing the refresh frequency of pixel columns farther from the axis, thus enhancing image brightness and uniformity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a uniform refresh frequency is used for all pixel columns, then the control system is simple, but the voxel distribution becomes uneven and brightness is non-uniform

Engineering Contradiction:

Improvecontrol system complexityVSAvoidvoxel distribution uniformity

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent applies local quality by assigning different refresh frequencies to different pixel columns based on their distance from the rotation axis. Pixel columns farther from the axis receive higher refresh frequencies to compensate for their longer rotation paths, while columns closer to the axis use lower frequencies. This localized differentiation resolves the contradiction by achieving uniform voxel distribution without requiring complete system redesign.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the refresh frequency parameter across different pixel columns to optimize voxel distribution. By varying this critical parameter spatially rather than uniformly, the system achieves better brightness uniformity and voxel distribution while maintaining manageable control complexity through structured parameter assignment.

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If pixel columns farther from the rotation axis use higher refresh frequencies, then voxel distribution becomes more even and brightness improves, but power consumption increases

Engineering Contradiction:

Improvebrightness uniformityVSAvoidpower consumption

Core Design Contradiction:

Manufacturing precisionVSUse of energy by moving object

Solution Approach 1:

The patent applies local quality by assigning different refresh frequencies to different pixel columns based on their distance from the rotation axis. Pixel columns farther from the axis receive higher refresh frequencies to compensate for their longer rotation paths, while columns closer to the axis use lower frequencies. This localized differentiation resolves the contradiction by achieving uniform voxel distribution without requiring complete system redesign.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent introduces dynamic refresh frequency adjustment where the refresh rate is not fixed uniformly but varies dynamically based on the spatial position of pixel columns relative to the rotation axis. This dynamic adaptation allows the system to optimize between image quality and power consumption by matching refresh rates to actual display needs at different locations.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If all pixel units operate at the same refresh frequency, then the driving control is simple, but the three-dimensional image display quality is suboptimal

Engineering Contradiction:

Improvedriving control simplicityVSAvoidthree-dimensional image display quality

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies local quality by assigning different refresh frequencies to different pixel columns based on their distance from the rotation axis. Pixel columns farther from the axis receive higher refresh frequencies to compensate for their longer rotation paths, while columns closer to the axis use lower frequencies. This localized differentiation resolves the contradiction by achieving uniform voxel distribution without requiring complete system redesign.

Inventive Principle:

Principle #3Local quality

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 solution achieves a more even voxel distribution and improved brightness across the display, addressing the issues of unevenness and brightness variations in traditional rotating display technologies.

Implementation Method 1

The stereoscopic rotating display apparatus utilizes high-speed rotation of a display panel in combination with a persistence-of-vision effect of human eyes to form a stereoscopic display space

Methodology Applied

Scientific EffectPersistence of vision:

Data Source

PatentUS12136369B2Rotating display apparatus and method of driving the same

Publication Date: 2024.11.05 BOE TECHNOLOGY GROUP CO LTD

AI summary

A rotating display apparatus is provided. The rotating display apparatus includes a pixel array and a control device. The pixel array is capable of rotating around a rotation axis in the pixel array, the pixel array includes a plurality of pixel units, and the plurality of pixel units are arranged in a plurality of pixel columns distributed in a direction perpendicular to the rotation axis. Pixel units in each pixel column are arranged in a direction parallel to the rotation axis and operate at a same refresh frequency. A refresh frequency of pixel units in a pixel column close to the rotation axis is less than a refresh frequency of pixel units in a pixel column far away from the rotation axis. The control device is configured to control the pixel units in each pixel column to operate at a refresh frequency corresponding to the pixel column.