Under-Display Camera Light Transmitting Holes
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Solution Overview
Problem
Current terminal devices with pseudo-full-screen designs face limitations in achieving a true full-screen design due to the placement of photosensitive elements, which obstruct the display and affect the device's appearance.
Innovation Solution
Incorporating a photosensitive area in the display panel with light transmitting holes between pixel units allows for the placement of photosensitive elements, such as camera and fingerprint modules, under the display panel, enabling a full-screen design while maintaining optical signal transmission and improving the device's appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If photosensitive elements are disposed on the front side of the display panel, then optical signal transmission is achieved, but the full-screen design cannot be implemented and the appearance is affected
Solution Approach 1:
The patent moves the photosensitive elements from the front side (2D surface) to the back side of the display panel, utilizing the third dimension (depth/thickness) to resolve the conflict between optical signal transmission and full-screen design. This dimensional transition allows the photosensitive elements to be positioned behind the display area without obstructing the visual display.
Solution Approach 2:
The photosensitive elements are nested within the display panel structure itself, specifically positioned in the photosensitive area on the back side. This nesting approach integrates the photosensitive elements into the overall panel architecture, allowing them to function without protruding or obstructing the front display surface.
2Shape
If photosensitive elements are disposed under the display panel, then full-screen design is achieved, but optical signal transmission must pass through the display structure
Solution Approach 1:
The display panel is segmented into distinct functional areas: a display area with pixel units and a photosensitive area with light transmitting holes. This segmentation allows light to pass through specific designated paths (the holes) while maintaining the integrity of the display structure, simplifying the optical transmission path despite the photosensitive elements being positioned underneath.
Solution Approach 2:
The display panel has different local properties: most areas are opaque for display purposes, while specific localized regions (light transmitting holes) are transparent to allow optical signal passage. This local quality differentiation enables the photosensitive elements to receive light through the holes without requiring the entire panel to be transparent.
3Illumination intensity
If light transmitting holes are provided between pixel units, then photosensitive elements can capture light, but the display area is reduced
Solution Approach 1:
The light transmitting holes are positioned in the photosensitive area between pixel units, creating localized transparent regions that do not interfere with the overall display area. The holes are small and strategically placed to minimize impact on display real estate while sufficient for optical signal transmission.
Solution Approach 2:
Instead of making the entire photosensitive area transparent, only specific partial regions (the light transmitting holes) are made transparent. This partial action approach provides sufficient light transmission for the photosensitive elements to function while preserving the majority of the display area for visual output.
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 solution enables a full-screen design by allowing photosensitive elements to operate effectively through the light transmitting holes, enhancing the terminal device's functionality and aesthetics by ensuring that the photosensitive elements can capture images and data without visible obstructions.
Implementation Method 1
Because the size of the light transmitting hole is small, based on the principle of pin-hole imaging, each hole may pass through external light in a large range
Data Source
AI summary
A display panel includes: a display area including a photosensitive area, and a plurality of pixel units arranged in an array in the photosensitive area, wherein a light transmitting hole is provided between adjacent pixel units in the photosensitive area.