Display Panel Light Guiding Structures for Image Recognition Signal-to-Noise Ratio
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Solution Overview
Problem
Current display terminal products face a challenge of low signal-to-noise ratio in image recognition performance, primarily due to insufficient visible light emission and noise interference from adjacent light-emitting units.
Innovation Solution
The proposed solution involves a display panel design with a light guiding layer and strategically positioned light-emitting and photosensitive units. The light guiding structures are optimized to direct visible light emitted by light-emitting units directly to corresponding photosensitive units, while minimizing noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If light-emitting units are arranged in a display panel for image recognition, then image recognition function is provided, but noise interference from adjacent light-emitting units reduces signal-to-noise ratio
Solution Approach 1:
The patent divides the light emission function into separate units (first light-emitting unit and second light-emitting unit) with distinct functions. The first light-emitting unit emits first visible light for image recognition while the second light-emitting unit emits second visible light for display, separating the imaging function from the display function to reduce mutual interference and improve signal-to-noise ratio.
Solution Approach 2:
The patent applies different characteristics to different parts of the light-emitting units. The first light-emitting unit is designed with specific emission characteristics optimized for image recognition, while the second light-emitting unit has characteristics optimized for display. This local differentiation allows each unit to perform its specific function with high quality while minimizing interference on the other.
2Measurement precision
If visible light emission is increased to improve image recognition, then signal intensity increases, but energy consumption increases
Solution Approach 1:
The patent segments the lighting function into dedicated first light-emitting units for image recognition and second light-emitting units for display. This allows independent control of each unit's energy consumption, enabling the first light-emitting units to emit sufficient light for accurate image recognition only when needed, rather than continuously powering all light-emitting units at high intensity.
Solution Approach 2:
The patent employs partial action by activating only the first light-emitting units during image recognition operations, while the second light-emitting units remain inactive or operate at lower intensity. This selective activation achieves the necessary signal intensity for image recognition without the energy cost of operating all light-emitting units at full power.
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 configuration enhances the signal intensity of useful signals detected by photosensitive units, thereby improving the signal-to-noise ratio and overall image recognition performance.
Implementation Method 1
a light guiding layer provided above the plurality of pixels, including a plurality of light guiding structures, the first visible light emitted by the first light-emitting unit being received by a corresponding photosensitive unit through a corresponding light guiding structure
Data Source
AI summary
Disclosed are a display panel, a display module and a display device. The display panel includes: a plurality of pixels and a light guiding layer provided above the pixels with a plurality of light guiding structures. The pixel includes a photosensitive unit and a plurality of light-emitting units. The light-emitting unit includes a first light-emitting unit configured to emit a first visible light, and the photosensitive unit is configured to detect the first visible light. The first visible light is received by the corresponding photosensitive unit through the corresponding light guiding structure. The first light-emitting unit has a first center line, the photosensitive unit has a second center line, the light guiding structure has a third center line. A first shortest distance between the second center line and the first center line is greater than a second shortest distance between the third center line and the first center line.