Texture Recognition Module Structure for EMI and Light Interference
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Solution Overview
Problem
Current texture recognition modules in electronic devices face challenges such as electromagnetic interference, fragile lens structures, and unwanted light reflection, which affect imaging quality and accuracy due to their integration with display substrates in limited spaces.
Innovation Solution
A texture recognition module design featuring a texture acquisition region surrounded by a peripheral region, including photosensitive sub-pixels, an optical module layer, and a support layer, with dummy sub-pixels and electromagnetic shielding to enhance signal quality and protect sensitive components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the texture recognition module is integrated with the display substrate, then the device achieves larger screens and full screens, but the texture recognition accuracy deteriorates due to electromagnetic interference and light interference
Solution Approach 1:
The patent divides the substrate into functionally independent regions: a display region and a texture recognition region. The texture recognition module includes photosensitive sub-pixels arranged in a specific pattern (e.g., 5x5 array) separated from display pixels by isolation structures. This segmentation prevents electromagnetic and optical interference between the two functions while maintaining full-screen display capability.
Solution Approach 2:
The patent extracts the texture recognition function from the display substrate by providing a dedicated texture recognition module with its own photosensitive elements, optical module layer, and support layer. This extracted module can be positioned in non-display areas or integrated without interfering with display pixels, thereby eliminating cross-interference while maintaining both functions.
2Area of stationary object
If the texture recognition module is integrated with the display substrate, then the device achieves larger screens, but the reliability deteriorates due to damage from impacts
Solution Approach 1:
The patent incorporates a support layer (e.g., foam or rubber material) between the optical module layer and the base substrate. This cushioning layer absorbs impact forces before they reach the sensitive photosensitive elements and optical components, protecting them from damage during drops or collisions while maintaining the integrated full-screen design.
Solution Approach 2:
The patent applies different material properties to different regions: the support layer uses soft, shock-absorbing materials in areas prone to impact, while the display regions maintain their original rigid structure for visual quality. This localized quality enhancement protects sensitive components without compromising overall device performance.
3Measurement precision
If the optical module layer is added to adjust light transmission, then the texture acquisition quality improves, but the device complexity increases
Solution Approach 1:
The optical module layer serves multiple functions: it contains microlenses for focusing light onto photosensitive elements, color filters for wavelength selection, and light transmission control structures. By integrating these multiple optical functions into a single layer, the patent improves texture acquisition quality without proportionally increasing device complexity.
Solution Approach 2:
The patent combines the optical module layer with the support layer and base substrate into an integrated structure. The optical module layer is positioned between the environment and the photosensitive sub-pixels, merging light control, protection, and structural support functions into a unified assembly that reduces overall complexity compared to separate components.
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
Improves texture recognition accuracy and reliability by reducing electromagnetic interference, protecting sensitive components, and minimizing unwanted light reflection, thereby enhancing the overall performance of the module.
Implementation Method 1
each of the plurality of photosensitive sub-pixels comprises a photosensitive element, and being used for texture acquisition
Implementation Method 2
the optical module layer is arranged on a side of the plurality of photosensitive sub-pixels away from the base substrate and configured to adjust light transmission
Data Source
AI summary
A texture recognition module and a display device, the texture recognition module includes a texture recognition substrate including a texture acquisition region and a peripheral region at least partially surrounding the texture acquisition region, and the texture recognition substrate includes a base substrate, multiple photosensitive sub-pixels, an optical module layer and a support layer, the multiple photosensitive sub-pixels are arranged on the base substrate and located in the texture acquisition region, each photosensitive sub-pixel includes a photosensitive element and for texture acquisition, the optical module layer is arranged on a side of the multiple photosensitive sub-pixels away from the base substrate and configured to adjust light transmission, and the support layer is arranged on a side of the optical module layer away from the base substrate and includes an acquisition opening which exposes the multiple photosensitive sub-pixels. The texture recognition module has a better stability.