Interactive Display Panel With Integrated Emitting And Sensing Diodes
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Solution Overview
Problem
Conventional interactive display systems require separate active matrix display panels and sensors, leading to bulkier and less efficient designs due to the need for distinct components for emitting and sensing light.
Innovation Solution
Integration of light emitting diodes (LEDs) that can both emit and sense light within the display panel, utilizing micro LEDs and microchips for high-resolution and pixel-density applications, allowing for thinner and more efficient display systems by eliminating the need for separate sensing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate active matrix display panels and sensors are used, then light emission and sensing functions are achieved, but device complexity and bulkiness increase
Solution Approach 1:
The patent combines separate light emitting diodes (LEDs) and photodetector diodes into a single integrated display panel structure. The LEDs are positioned in alternating rows with photodetector diodes, allowing both light emission and sensing functions to be performed within one unified device, thereby reducing overall system complexity while maintaining functional versatility
Solution Approach 2:
The display panel is designed to perform multiple functions simultaneously - both emitting light through LEDs and sensing light through photodetector diodes - within the same device structure. This multi-functionality eliminates the need for separate display and sensing devices, directly reducing device complexity while preserving adaptability
2Adaptability or versatility
If separate sensors are layered over the display panel, then sensing capability is added, but display region obstruction and bulkiness occur
Solution Approach 1:
The patent segments the display panel into alternating rows of light emitting diodes and photodetector diodes. This segmentation allows the sensing function to be distributed across specific regions rather than requiring a separate sensor layer, thereby maintaining maximum display area while incorporating sensing capability throughout the panel structure
Solution Approach 2:
Instead of adding a separate sensor layer in one dimension, the patent integrates sensing functionality by alternating LED rows with photodetector diode rows in the same spatial dimension. This dimensional integration allows both emission and sensing to coexist without obstructing the display region, effectively increasing the usable display area
3Length of stationary object
If conventional LEDs are used for both emission and sensing, then device thickness is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs different types of diodes (LEDs for emission, photodetector diodes for sensing) in specific local regions of the display panel. This local differentiation allows each component to be optimized for its specific function while maintaining overall thinness, and the segmented architecture simplifies manufacturing by allowing standardized production of individual diode types that can be precisely positioned in alternating rows
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
Enables thinner, more efficient interactive display systems with high resolutions and pixel densities by using micro LEDs and microchips for both light emission and sensing, enhancing display performance and reducing bulkiness.
Implementation Method 1
Each subpixel includes a light emitting diode (LED) that is coupled to a driving circuit and a sensing circuit through a sensing output data line
Implementation Method 2
The LED is operated in a light sensing mode by selecting a sensing output data line... the LED generates an output signal corresponding to an intensity of detected light that is detected by the sensing circuit
Data Source
AI summary
Exemplary methods and systems use a micro light emitting diode (LED) in an active matrix display to emit and sense light. Display panels, systems, and methods of operation are described in which LEDs may be used for both emission and sensing.