OLED Display Embedding Polarization Activated Microlens to Reduce Viewing Distance
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Solution Overview
Problem
Conventional stereoscopic display devices face inconvenience due to the need for shutter glasses in time-sequential type and have limitations in viewing distance for spatial-multiplexed type, especially when applied to high-resolution portable electronic products, where reducing the thickness of glass substrates affects structural strength.
Innovation Solution
A 2D and 3D switchable display device that embeds a polarization activated microlens (PAM) within the OLED display unit or polarization switching unit, eliminating the need for a glass substrate and allowing for a more efficient reduction in optimal 3D display viewing distance by using an organic light emitting diode (OLED) display unit, a polarization activated microlens, a polarization switching unit, and a polarizer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the thickness of glass substrate is reduced to shorten viewing distance, then the optimal 3D display viewing distance is reduced, but the structural strength of the glass substrate is affected
Solution Approach 1:
The patent extracts and removes the glass substrate from the display device structure. By eliminating the glass substrate that traditionally covered the PAM, the invention achieves both thickness reduction and viewing distance shortening without compromising structural strength, as the PAM is directly integrated into the display structure
Solution Approach 2:
The patent merges the PAM directly with the display structure by embedding it between the top substrate and the OLED display array. This integration eliminates the need for a separate glass substrate covering, thereby reducing overall thickness and viewing distance while maintaining structural integrity through direct integration
2Reliability
If a glass substrate is used to cover the PAM, then the PAM is protected, but the optimal 3D display viewing distance increases
Solution Approach 1:
The PAM is merged directly into the display structure between the top substrate and OLED display array, eliminating the need for a separate protective glass substrate. This integration maintains PAM protection through structural integration while minimizing the distance to the PAM, thereby reducing viewing distance
3Reliability
If shutter glasses are used for time-sequential type stereoscopic display, then stereoscopic display effect is achieved, but convenience in use is reduced
Solution Approach 1:
The invention extracts and eliminates the need for external shutter glasses by integrating the polarization switching functionality directly into the display structure through the PAM and polarization switching unit. This allows the display to provide stereoscopic effect without requiring additional accessories, thereby improving convenience
Solution Approach 2:
The display device performs the polarization switching function itself through the integrated PAM and polarization switching unit, rather than relying on external shutter glasses. The system serves its own stereoscopic display needs through internal components, eliminating the need for external accessories
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 solution enables a more efficient reduction in optimal 3D display viewing distance without compromising structural strength, providing a better stereoscopic display experience for high-resolution portable devices by eliminating the need for glass substrates and allowing for thinner, more effective display devices.
Implementation Method 1
The polarization activated microlens (PAM) is disposed between the top substrate and the OLED display array
Implementation Method 2
an organic light emitting diode (OLED) display unit
Data Source
AI summary
A 2D and 3D switchable display device includes an organic light emitting diode display unit, a polarization activated microlens, a polarization switching unit and a polarizer. The organic light emitting diode display unit includes a top substrate, a bottom substrate and an organic light emitting diode display array disposed between the top substrate and the bottom substrate. The polarization activated microlens is disposed between the top substrate and the organic light emitting diode display array, and the polarization activated microlens directly contacts both the top substrate and the organic light emitting diode display array. The polarization switching unit is disposed on the top substrate, and the polarizer is disposed on the polarization switching unit.