Movable Display Element for 2D to 3D Mode Switching

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Solution Overview

Problem

Existing display devices that utilize two display elements for stereoscopic image display often compromise on brightness, especially when switching between 2D and 3D modes, due to the additional display element reducing numerical aperture and transmissivity.

Innovation Solution

A display device with a fixed first display element and a movable second display element, where the elements are arranged differently for 2D and 3D modes, with adjustable illumination and positioning to enhance brightness and prevent the additional display element from lowering numerical aperture, and incorporating a touch panel that can be used in both modes without interfering with the image.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If two display elements are overlapped to display stereoscopic image, then 3D display capability is achieved, but brightness is reduced due to lowered numerical aperture and transmissivity

Engineering Contradiction:

Improve3D display capabilityVSAvoiddisplay brightness

Core Design Contradiction:

Adaptability or versatilityVSIllumination intensity

Solution Approach 1:

The second display element is made movable rather than fixed, allowing it to dynamically change position between overlapping (3D mode) and separated (2D mode) states. This dynamic configuration enables the system to adapt between 3D and 2D display modes while maintaining optimal brightness for each mode, resolving the contradiction between 3D capability and brightness.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The display system is divided into two independent display elements that can be positioned separately or overlapped. By segmenting the display into movable and fixed components, the system can selectively activate only the necessary display element for each mode, preventing the brightness reduction that occurs when both elements are always present and overlapping.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If second display element is made movable to enable mode switching, then 2D and 3D modes can be switched, but device complexity increases

Engineering Contradiction:

Improvemode switching capabilityVSAvoidstructural complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The second display element is mounted on a movable support structure that enables rotation between horizontal and vertical orientations. This dynamic mechanism allows the system to switch between 2D and 3D display modes while maintaining a relatively simple overall structure, as the movement is achieved through a straightforward rotational joint rather than a complex multi-component actuation system.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS7492577B2Display device convertible from two dimensional display to three dimensional display

Publication Date: 2009.02.17 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

AI summary

A display device includes a fixed first display element and a movable second display element, the first display element and the second display element assume a first state in which the first display element and the second display element are arranged individually and a second state in which the first display element and the second display element are arranged individually in an overlapped manner.