Display Panel Structure for Under-Display Camera Light Transmission
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Solution Overview
Problem
Existing display devices face challenges in implementing full-screen displays due to the integration of optical devices like cameras and sensors, which necessitate design compromises that reduce the display area and degrade the performance of these components by obstructing light transmission.
Innovation Solution
A display panel structure is proposed with a substrate featuring high-transmission areas corresponding to optical devices, including low-resolution pixels and a polarizing plate with a light-transmitting pattern to enhance light transmission, along with anti-reflection layers to improve light transmittance and camera performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If optical devices (camera, sensor) are exposed through the display panel, then the display device can provide additional functionality, but the display area is reduced and light transmission to optical devices is obstructed
Solution Approach 1:
The patent embeds the camera and sensor modules within the display panel structure itself, nesting them in the inactive area region. This allows the optical devices to be integrated without requiring separate exposed areas that would reduce the display area, while still maintaining full-screen display capability.
Solution Approach 2:
The patent utilizes the thickness dimension of the display panel by positioning the camera and sensor modules in the inactive area region, allowing light to pass through the display panel at an angle or through specialized light-transmitting regions rather than requiring direct frontal exposure.
2Area of stationary object
If pixels are disposed in the image area to enable full-screen display, then the display area is maximized, but light transmittance is lowered and camera performance is degraded
Solution Approach 1:
The patent applies different pixel resolutions in different regions: high-resolution pixels in the active display area and low-resolution or reduced pixel density in the image area. This local differentiation allows the display area to be maximized while ensuring sufficient light transmission in the image area for camera operation.
Solution Approach 2:
The display panel is segmented into distinct functional regions: an active area for high-resolution display, an image area with reduced pixel density for light transmission, and an inactive area region housing the camera and sensor modules. This segmentation allows each region to be optimized for its specific function.
3Illumination intensity
If the camera module is positioned to face the image area, then light can reach the camera, but the structure becomes more complex and manufacturing becomes difficult
Solution Approach 1:
The patent merges the camera module and sensor module into a single integrated assembly positioned in the inactive area region. This combined structure simplifies the overall device architecture by reducing the number of separate components and their interconnections, while still providing both imaging and sensing functions.
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 structure enables full-screen displays by ensuring sufficient light transmission to optical devices, maintaining image quality, and enhancing camera performance through increased light transmittance and reduced noise in image data.
Implementation Method 1
a polarizing plate disposed above the light-transmitting area and including a light-transmitting pattern having a light transmittance higher than that of the remaining area
Implementation Method 2
the substrate includes a high-transmission area having a higher light transmittance than the remaining portion in a position corresponding to the second area
Implementation Method 3
anti-reflection layers to improve light transmittance and camera performance
Data Source
AI summary
A display panel includes a substrate having a first area in which first pixels are disposed and a second area in which second pixels and a light-transmitting area disposed between the second pixels are disposed, and a polarizing plate disposed above the light-transmitting area and including a light-transmitting pattern having a light transmittance higher than that of the remaining area, wherein the substrate includes a high-transmission area having a higher light transmittance than the remaining portion in a position corresponding to the second area.