OLED Display Gesture Capture via Coded Optical Patterns
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing interactive media display devices face challenges in capturing user gestures effectively due to limitations in optical pattern alignment and light transmission, leading to reduced accuracy and increased dead zones when capturing 3D information.
Innovation Solution
An organic light-emitting display device with a first substrate having pixel areas and transmittance areas, paired with optical pattern units that transmit or block external light according to coded patterns, and sensor units on a second substrate to receive light, allowing for precise gesture capture and 3D information extraction without the need for optical masks, thereby reducing dead zones and enhancing display scalability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical pattern units are added to transmit or block external light for coded patterns, then gesture capture accuracy and 3D information extraction are improved, but device complexity increases
Solution Approach 1:
The patent merges the optical pattern units with the display substrate structure, integrating the coded pattern transmission function into the existing display architecture. This allows gesture capture functionality to be combined with the display structure itself, improving measurement precision while minimizing the increase in device complexity through structural integration rather than adding separate components
2Measurement precision
If sensor units are arranged to receive external light passing through optical pattern units, then 3D information extraction is improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs preliminary action by pre-defining the spatial arrangement and optical alignment between the optical pattern units and sensor units during the design and manufacturing phase. The coded patterns are predetermined and the sensor unit positions are pre-calculated to receive light at specific angles, enabling accurate 3D information extraction while simplifying the actual manufacturing process through predetermined configurations
3Illumination intensity
If transmittance areas are created adjacent to pixel areas, then light transmission for gesture capture is improved, but display area is reduced
Solution Approach 1:
The patent applies local quality by creating transmittance areas with specific optical properties (high light transmission) in localized regions adjacent to the pixel areas, while the pixel areas themselves maintain their light-emitting properties. This allows different regions of the substrate to have different optical qualities optimized for their specific functions, improving light transmission for gesture capture without requiring the entire display area to be compromised
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 enables accurate capture of user gestures and extraction of 3D information with minimal information loss, allowing for slim and large-scale interactive media displays by aligning optical pattern units with sensor units and using coded patterns to transmit or block light effectively.
Implementation Method 1
an organic layer between the first electrode and the second electrode and including an emission layer (EML)
Implementation Method 2
a reflective layer capable of reflecting light
Implementation Method 3
the transmittance area transmitting external light
Data Source
AI summary
Embodiments relate to an organic light-emitting display device, comprising a first substrate defined by a plurality of pixels each including a pixel area and a transmittance area adjacent to the pixel area, the pixel area emitting light in a first direction and the transmittance area transmitting external light, and the first substrate including a pair of optical pattern units for transmitting or blocking the external light for each transmittance area according to coded patterns corresponding to the plurality of pixels, a second substrate facing the first substrate and encapsulating the plurality of pixels on the first substrate, and a pair of sensor units corresponding to the pair of optical pattern units, the pair of sensor units being arranged in a second direction that is opposite to the first direction in which the light is emitted, the pair of sensor units receiving the external light passing through the pair of optical pattern units.