Under-Display Camera Light Transmission Structure
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Solution Overview
Problem
Display devices face challenges in integrating optical electronic devices, such as cameras and sensors, without increasing the bezel size or compromising image quality, as these devices need to receive light while being hidden from the front surface.
Innovation Solution
A display panel with a light transmission structure that allows optical electronic devices to be placed under the display area, using distinct light emitting areas and subpixel circuits in optical, bezel, and normal areas to enable light transmission without exposing them on the front surface, while maintaining image quality and reducing bezel size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If an optical electronic device is exposed on the front surface to receive light, then light reception capability is improved, but bezel area increases or display area is compromised
Solution Approach 1:
The optical electronic device is relocated from the front surface (2D plane) to the rear side of the display panel, utilizing the third dimension (depth) to resolve the conflict between light reception and display area. Light passes through the display panel from front to back, enabling the device to receive light without occupying front surface space.
Solution Approach 2:
The display panel itself acts as an intermediary medium, allowing light to pass through it to reach the optical electronic device on the rear side. This mediator enables light transmission while maintaining the front surface integrity and minimizing bezel area.
2Illumination intensity
If an optical electronic device is exposed on the front surface, then light reception capability is improved, but image quality uniformity deteriorates
Solution Approach 1:
By moving the optical electronic device to the rear side, the invention eliminates the need for front surface openings (notches or holes) that cause image quality non-uniformity. The display panel maintains its continuous structure, ensuring uniform image quality across the entire display area.
3Area of stationary object
If an optical electronic device is placed under the display area, then bezel area is reduced, but light reception capability deteriorates
Solution Approach 1:
The display panel serves as a light-transmissive intermediary, allowing light to pass through it to reach the optical electronic device positioned on the rear side. This resolves the contradiction by enabling light reception without requiring front surface exposure or increasing bezel area.
4Illumination intensity
If a notch or hole is formed in the display area to expose the optical electronic device, then light reception capability is improved, but display area is reduced
Solution Approach 1:
The invention transitions the optical electronic device from front surface exposure (requiring notches or holes) to rear side placement, utilizing the depth dimension. This allows the display area to remain continuous and intact, maximizing display area while still enabling light reception through the panel.
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
Enables optical electronic devices to receive light without being exposed, reducing image quality non-uniformity and allowing for more design flexibility by eliminating the need for notches or holes in the display panel, thus improving the display device's functionality and aesthetics.
Implementation Method 1
a light transmission structure in which even when one or more optical electronic device are located under a display area of the display panel and are therefore not exposed in a front surface of the display device, the optical electronic device can receive light normally and increasingly
Data Source
AI summary
The present disclosure provides a display panel and a display device that include a display area including a first optical area, a first optical bezel area located outside of the first optical area, and a normal area located outside of the first optical bezel area, and a non-display area, wherein each of the first optical area, the first optical bezel area, and the normal area may include two or more light emitting areas among a plurality of light emitting areas, and the first optical area may be a transmittable area. The plurality of light emitting areas may include a first light emitting area included in the first optical area, a second light emitting area emitting light of the same color as the first light emitting area and included in the first optical bezel area, and a third light emitting area emitting light of the same color as the first light emitting area and included in the normal area. The second light emitting area may have substantially the same area as each of the first and third light emitting areas.