Dual-Sided Transparent Display With Privacy Light Blocking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional double-side transparent displays are limited by increased thickness and reduced personal privacy and light transmittance due to the use of two separate display panels, which restricts their utilization.
Innovation Solution
A transparent display design featuring light-emitting package units with micro-substrates that block light from frontward and backward elements, allowing for double-side display functionality while maintaining high light transmittance and ensuring personal privacy through the use of a transparent substrate, wiring layer, and sealant, which electrically connects the light-emitting package units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two separate display panels are used to provide double-side display function, then double-side display capability is achieved, but the thickness of the display is increased
Solution Approach 1:
The patent merges frontward and backward light-emitting elements onto a single transparent substrate, creating an integrated display structure that eliminates the need for two separate display panels. This consolidation achieves double-side display functionality while reducing overall thickness by sharing common structural components and substrate.
Solution Approach 2:
The patent transitions from a conventional planar single-side display to a three-dimensional dual-sided configuration by positioning light-emitting elements on both surfaces of a transparent substrate. This dimensional expansion enables simultaneous frontward and backward display without requiring stacked panels, thereby reducing thickness in the vertical dimension.
2Adaptability or versatility
If two separate display panels are used to provide double-side display function, then double-side display capability is achieved, but personal privacy is limited
Solution Approach 1:
The patent applies directional light emission properties to different regions of the display structure. Frontward light-emitting elements are configured to emit light primarily toward the front side, while backward light-emitting elements emit light toward the back side. This localized optical control ensures that each side displays information independently, preventing users from one side from observing display content on the opposite side, thereby protecting personal privacy.
3Adaptability or versatility
If two separate display panels are used to provide double-side display function, then double-side display capability is achieved, but light transmittance is reduced
Solution Approach 1:
By consolidating both frontward and backward display functions into a single transparent substrate rather than using two separate panels, the structure eliminates redundant layers and interfaces that would otherwise impede light transmission. The integrated design maintains high light transmittance while achieving dual-side display capability.
Solution Approach 2:
The patent utilizes transparent or translucent materials for the substrate that allow light to pass through while supporting light-emitting elements on both sides. The material properties are selected to maintain high transparency, ensuring that light transmittance is preserved despite the presence of dual-sided display functionality.
4Adaptability or versatility
If light-emitting elements are disposed on both sides of the micro-substrate, then double-side display function is achieved, but light from one side may be observed from the other side
Solution Approach 1:
The patent configures frontward light-emitting elements and backward light-emitting elements with distinct directional emission characteristics. The micro-substrate and associated optical structures are designed to guide and confine light emission to specific directions, ensuring that frontward elements illuminate only the front side and backward elements illuminate only the back side. This localized optical control prevents cross-side observation and maintains privacy.
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 design achieves improved yield and reduced defects by allowing mass transfer of tested light-emitting package units, enhancing light transmittance to greater than 90% and ensuring privacy by blocking light emission between sides, thus enabling effective double-side display functionality.
Implementation Method 1
The micro-substrate is configured to block a light from the frontward light-emitting elements toward the transparent substrate
Implementation Method 2
a plurality of frontward light-emitting elements disposed on the first surface of the micro-substrate, and a plurality of backward light-emitting elements disposed on the second surface of the micro-substrate
Data Source
AI summary
A transparent display includes a transparent substrate, a wiring layer, a plurality of light-emitting package units, and a plurality of connecting elements. The wiring layer is disposed on a surface of the transparent substrate. Each of the light-emitting package units includes a micro-substrate, frontward light-emitting elements, backward light-emitting elements, and a sealant. The micro-substrate has a first surface facing away from the transparent substrate and a second surface facing the transparent substrate. The frontward light-emitting elements are disposed on the first surface of the micro-substrate, in which the micro-substrate is configured to block the light from the frontward light-emitting elements toward the transparent substrate. The backward light-emitting elements are disposed on the second surface of the micro-substrate. The sealant covers the micro-substrate, the frontward light-emitting elements, and the backward light-emitting elements. The connecting elements electrically connect the light-emitting package units to the wiring layer, respectively.