Under-Display Optical Sensor Light Transmittance Design
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Solution Overview
Problem
Display devices face challenges in integrating optical electronic devices without reducing the display area or exposing them on the front surface, which increases bezel size and requires notches or holes.
Innovation Solution
A display device design that incorporates optical electronic devices under or in the lower portion of the display panel, allowing for a high transmittance area without exposing them on the front surface, using a structure with distinct optical and normal areas that enable light transmission and image display while minimizing non-display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If optical electronic devices are installed in the front portion of the display device, then light reception capability is improved, but the display area is reduced and the bezel size increases
Solution Approach 1:
The patent moves the optical electronic device from the front surface (2D plane) to the lower portion beneath the display panel, utilizing the third dimension (depth/vertical space). This allows the optical device to be positioned in a space that does not conflict with the front display area, enabling full display area utilization while maintaining light reception capability through the panel structure.
Solution Approach 2:
The optical electronic device is nested within the display panel structure, specifically positioned in the lower portion beneath the display area. The display panel acts as a container that houses the optical device while maintaining its front surface integrity, allowing the optical device to be integrated without creating notches or reducing the visible display area.
2Illumination intensity
If optical electronic devices are installed in the front portion with notches or holes, then light reception capability is improved, but the device structure becomes more complex
Solution Approach 1:
The patent extracts the optical electronic device from the front surface structure and relocates it to the lower portion beneath the display panel. This removal from the front surface eliminates the need for notches, holes, or complex front surface modifications, thereby reducing structural complexity while preserving the optical device's light reception function through the panel.
3Area of stationary object
If optical electronic devices are disposed under the display panel, then display area is maintained, but light transmission to the device must be optimized
Solution Approach 1:
The patent applies local quality optimization by creating a specific optical path region in the lower portion of the display panel where light transmission is enhanced. The display panel structure is locally modified in the area above the optical device to allow efficient light passage, while other areas maintain their normal display characteristics. This localized optimization ensures sufficient light reaches the optical device without compromising overall display area or quality.
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 design enhances transmittance and reduces bezel size by hiding optical devices, maintaining normal display functionality and increasing design freedom without the need for notches or camera holes.
Implementation Method 1
a first optical area that includes a plurality of light emitting areas and a plurality of first transmission areas
Data Source
AI summary
A display device a display panel including a plurality of light emitting areas; a first optical electronic device located under the display panel; and a second optical electronic device located under the display panel. Further, a first optical area of the display panel overlapping the first optical electronic device includes a plurality of first light transmission areas in addition to the plurality of light emitting areas, a second optical area of the display panel overlapping the second optical electronic device includes a plurality of second light transmission areas in addition the plurality of light emitting areas, a third optical area of the display panel not overlapping the first and second optical electronic devices includes the plurality of light emitting areas without including the first and second light transmission areas, and the first light transmission areas have a different shape or size than the second light transmission areas so a light transmittance of incident light through the first light transmission areas is different than a light transmittance of incident light through the second light transmission areas.