Under-Display Camera Panel With Laser-Cleared Light Transmitting Region
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Solution Overview
Problem
Existing display panels with integrated camera regions face limitations in transmittance and luminance due to the presence of low-resolution pixels, which restrict the implementation of full-screen displays in mobile devices.
Innovation Solution
A display panel design featuring a display region with high-resolution pixels and a sensing region with lower pixel density, where a light shield layer with opening holes allows for a light transmitting part, and a metal layer is selectively removed using a laser ablation process to enhance transmittance and minimize residual metal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If low-resolution pixels are disposed in the sensing region to enable camera integration, then camera function is achieved, but transmittance and luminance are lowered
Solution Approach 1:
The patent extracts and removes the metal layer from the light transmitting part region through laser irradiation, separating the metal layer from the area where light transmission is critical for camera operation, thereby improving transmittance while maintaining camera integration capability
Solution Approach 2:
The patent applies different treatments to different regions: the metal layer is removed from the light transmitting part while being maintained in the pixel regions, creating local quality differences that optimize both camera transmittance and display performance in respective areas
2Illumination intensity
If metal layer is removed from light transmitting part to improve transmittance, then transmittance increases, but residual metal may remain affecting image quality
Solution Approach 1:
The patent changes the physical parameters of laser irradiation (wavelength, power, scanning speed) to optimize the removal of metal layer from the light transmitting part, achieving complete removal without residual metal while maintaining high transmittance
Solution Approach 2:
The patent replaces conventional mechanical or chemical metal removal methods with laser irradiation, which provides more precise and complete removal of the metal layer from the light transmitting part without leaving residuals
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
The solution enables increased transmittance and improved image quality in the sensing region, allowing for full-screen display implementations without compromising the display region's performance.
Implementation Method 1
irradiating the laser beam to at least the sensing region to remove the metal layer from the light transmitting part
Implementation Method 2
the light shield layer includes an opening hole corresponding to the light transmitting part and is configured to expose the light transmitting part to a laser beam through the opening hole
Data Source
AI summary
Provided are a display panel and a method of fabricating the same. The display panel includes a display region including a first pixel region where a plurality of pixels are disposed, a sensing region including a second pixel region where a plurality of pixel groups are disposed, and a light transmitting part disposed between the pixel groups. At least the second pixel region includes a light shield layer, and the light shield layer includes an opening hole corresponding to the light transmitting part.