Under-Display Camera Wiring Structure for Diffraction Reduction
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Solution Overview
Problem
The integration of optical lens modules in electronic devices, particularly those with under-display cameras, leads to aesthetic deterioration and reduced display area due to camera holes, and diffraction issues result in image quality degradation.
Innovation Solution
The implementation of a display structure with transparent wires and refractive index-matched materials in the display's pixel and wiring layers, along with surface irregularities, to minimize optical path differences and scatter light, reducing diffraction and flare.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If an under display camera is implemented, then the display area is maintained and aesthetic appearance is improved, but diffraction occurs causing image quality deterioration
Solution Approach 1:
A light transmissive area is introduced as an intermediary structure between the display pixels and the under display camera. This light transmissive area has a refractive index that is substantially the same as or greater than the surrounding pixels, allowing it to act as an optical mediator that guides light from the display through the camera hole to the camera sensor, thereby reducing diffraction effects while maintaining display area
Solution Approach 2:
The refractive index parameter of the light transmissive area is specifically adjusted to be substantially the same as or greater than the surrounding pixels. This parameter change optimizes light transmission through the camera hole and minimizes diffraction, improving image quality without sacrificing display area
2Adaptability or versatility
If multiple optical lens modules are mounted, then various functions (wide angle, ultra-wide, telephoto, fingerprint recognition, iris recognition, depth information) are provided, but the number of camera holes increases deteriorating aesthetic appearance
Solution Approach 1:
Multiple optical lens modules (wide angle, ultra-wide, telephoto, fingerprint recognition, iris recognition, depth information cameras) are merged and disposed within a single camera hole region. The light transmissive area structure enables multiple optical paths to coexist in one hole, providing diverse optical functions while maintaining aesthetic appearance by avoiding multiple separate holes
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 enhances image quality by minimizing diffraction and flare, maintaining the aesthetic appeal and functionality of electronic devices with under-display cameras.
Implementation Method 1
a wiring layer, wherein the wiring layer includes: a transparent wire having a first refractive index; a first material provided adjacent to the transparent wire and having a second refractive index; and a second material having a third refractive index
Implementation Method 2
diffraction having various frequencies may occur when light is transmitted through the transmissive area. Light sources having various frequencies generate a constructive and/or destructive interference due to diffraction with adjacent light sources
Implementation Method 3
a first material provided adjacent to the transparent wire and having a second refractive index; and a second material having a third refractive index, wherein the first material is disposed on the second material or the second material is disposed on the first material
Data Source
AI summary
An electronic device includes an optical lens module; and a display including a pixel layer and a wiring layer, wherein the pixel layer may include: a first area corresponding to an angle of view of the optical lens module; and a second area around the first area, and wherein the wiring layer may include: a transparent wire having a first refractive index; a first material provided adjacent to the transparent wire and having a second refractive index; and a second material having a third refractive index, wherein the first material is disposed on the second material or the second material is disposed on the first material.