Display Pixel Circuit with Imaging Sensor for Micro-LED Panels
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Solution Overview
Problem
Current display technologies lack the capability to simultaneously display images and acquire images effectively, particularly in micro-LED display systems where integrated image acquisition functionality is limited.
Innovation Solution
A display unit comprising a display pixel unit and an imaging pixel unit, where the imaging pixel unit includes a photosensitive element and a filter element, such as an electrochromic or liquid crystal filter, coupled with a pixel circuit that includes transistors for controlling image display and acquisition, allowing for simultaneous image display and acquisition through distinct operational periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a display panel is designed to perform image display function, then the display performance is improved, but the capability to acquire images is lost
Solution Approach 1:
The display panel is designed to perform both image display and image acquisition functions by integrating display pixel units with imaging pixel units. Each pixel unit can be configured as either a display pixel unit comprising a light emitting diode or an imaging pixel unit comprising a photosensitive element, enabling the same device structure to serve multiple purposes.
2Adaptability or versatility
If the display panel integrates imaging functionality, then the versatility is improved, but the device complexity increases
Solution Approach 1:
The display panel is divided into distinct display pixel units and imaging pixel units. Each pixel unit has its own dedicated pixel circuit that can be independently configured. The pixel circuit includes transistors that can selectively activate either the light emitting diode in display mode or the photosensitive element in imaging mode, simplifying the overall design by avoiding the need for a completely separate imaging device.
3Manufacturing precision
If the pixel circuit uses multiple transistors to control display and imaging, then the control precision is improved, but the manufacturing complexity increases
Solution Approach 1:
The pixel circuit merges the control functions for both display and imaging operations into a single integrated circuit structure. The same transistor network controls both the light emitting diode and the photosensitive element, allowing for unified fabrication processes and reducing manufacturing complexity while maintaining precise control over both functions.
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 the realization of both image display and image acquisition functions in a single display panel, enhancing the functionality of micro-LED displays by utilizing transistors to control the display and imaging processes, thereby improving the efficiency and versatility of the display system.
Implementation Method 1
the imaging pixel unit comprises a photosensitive element
Implementation Method 2
the filter element comprises an electrochromic filter element
Implementation Method 3
the filter element comprises a liquid crystal filter element
Data Source
AI summary
The embodiments of the disclosure relate to a display unit, a pixel circuit and a driving method and a display panel thereof. The display unit comprises a display pixel unit for displaying images, and an imaging pixel unit for acquiring images. The imaging pixel unit comprises a photosensitive element and a filter element located on the photosensitive element.