In-Screen Display Panel Layout for High-Resolution Image Detection
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Solution Overview
Problem
Existing display panels face challenges in integrating in-screen functional components like image acquisition units, leading to reduced resolution and performance due to limited space and interference with display elements, particularly in LCD screens, which affect the display aperture ratio and image detection accuracy.
Innovation Solution
The image detection units are distributed at different positions adjacent to display units, utilizing gaps between pixels, with specific arrangements such as first and second distribution positions, allowing for higher resolution without impacting display pixel distribution, and using RGBW pixel layouts to improve aperture ratio and reduce backlight interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If image detection units are integrated into TFT substrates to achieve in-screen image acquisition, then sensing functions are realized, but display brightness is reduced due to blocked backlight transmission
Solution Approach 1:
The patent transitions from planar integration of image detection units into the TFT substrate to a three-dimensional arrangement where detection units are positioned at multiple heights above the substrate. This vertical stacking allows detection units to capture light from different depths, improving image detection resolution while maintaining backlight transmission paths for display brightness.
Solution Approach 2:
The patent implements a nested structure where image detection units are integrated within the display panel's multi-layer construction. The detection units are positioned between functional layers (such as between the color filter and liquid crystal layers), allowing both display and detection functions to coexist within the same spatial envelope without significant trade-offs.
2Adaptability or versatility
If functional components are integrated within the display screen to achieve full screen, then no additional space is needed, but arrangement space for functional components is limited
Solution Approach 1:
The patent utilizes the vertical dimension within the display panel's thickness to accommodate image detection units. By positioning detection units at multiple heights above the TFT substrate and utilizing the z-axis space between display layers, the design achieves full-screen integration while providing sufficient arrangement space for functional components without compromising display area.
3Measurement precision
If image detection units are arranged at multiple distribution positions to improve detection resolution, then detection precision increases, but device complexity increases
Solution Approach 1:
The patent divides the image detection function into multiple segments by positioning detection units at different distribution positions (first and second distribution positions) above the TFT substrate. Each detection unit captures light from specific regions, and the segmented detection data is combined to achieve high-resolution imaging. This segmentation approach improves detection precision while managing complexity through modular arrangement.
Solution Approach 2:
The patent designs the image detection units to serve multiple functions: they detect light for imaging purposes while also being integrated into the display panel's existing layer structure. The same detection units operate across different distribution positions to achieve both wide-area coverage and high-resolution detection, reducing overall device complexity through multi-functionality.
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 approach achieves image detection resolutions up to 600dpi while maintaining or improving display resolution, ensuring adequate image detection accuracy and aperture ratio, suitable for fingerprint recognition and other image acquisition tasks.
Implementation Method 1
a plurality of image detection units 200 distributed at different positions adjacent to the plurality of display units 110 of the display array 100
Implementation Method 2
configured to detect photosignals to obtain a target detection image
Data Source
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Figure 5A~5C
AI summary
Provided are a display panel and a terminal device. The display panel includes: a display array (100) including a plurality of display units (110), the display unit including at least one display subunit (111,112); and a plurality of image detection units (200) configured to detect photo signals to obtain a target detection image, the plurality of image detection units being adjacent to the plurality of display units and having first distribution positions (201) and second distribution positions (202), the first distribution positions being different from the second distribution positions. The plurality of image detection units are distributed at different distribution positions at the adjacent positions of the plurality of display units of the display array in different distribution manners. Accordingly, gaps between the display units may be reasonably utilized, so that enough image detection units may be distributed in the display panel to further obtain the target detection image meeting a resolution requirement.