Photosensitive Device Nesting in Display Panel Edge Area
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Solution Overview
Problem
The existing display devices face challenges in forming a full-screen structure due to the wide bezel caused by the placement of photosensitive devices, which limits the ability to adjust brightness based on ambient light intensity effectively.
Innovation Solution
A display panel design where the photosensitive device is positioned between the cover plate and the backlight module, within the edge area, allowing the edge area to only cover the backlight module, thereby reducing the bezel width and enabling a full-screen structure without affecting the display performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the photosensitive device is placed in the edge area, then the brightness sensing function is achieved, but the bezel width increases and full-screen structure cannot be formed
Solution Approach 1:
The photosensitive device is nested within the overlapping region of the array substrate and optical film layer projections on the cover plate. This nesting arrangement allows the photosensitive device to be integrated into the existing display structure without increasing the overall bezel width, enabling both brightness sensing functionality and full-screen display structure to coexist.
Solution Approach 2:
The patent utilizes the vertical dimension by positioning the photosensitive device between the cover plate and the backlight module, rather than placing it only in the horizontal edge area. This three-dimensional arrangement allows the photosensitive device to occupy space in the Z-direction, reducing the impact on the two-dimensional bezel area and enabling full-screen structure formation.
2Area of stationary object
If the photosensitive device is positioned within the overlapping projection area, then the bezel width is reduced, but the light transmission to the photosensitive device may be affected
Solution Approach 1:
The patent introduces a light-transmitting area in the cover plate as an intermediary element that facilitates light transmission to the photosensitive device. This light-transmitting area acts as a mediator that allows ambient light to pass through the cover plate and reach the photosensitive device positioned behind it, ensuring proper functionality while maintaining the reduced bezel design.
3Area of stationary object
If the array substrate and optical film layer are extended to cover the photosensitive device, then the display area is increased, but the photosensitive device cannot sense ambient light effectively
Solution Approach 1:
The cover plate is segmented into different functional areas: a light-transmitting area that allows ambient light to reach the photosensitive device, and a non-light-transmitting area that provides structural support and defines the display boundary. This segmentation enables the photosensitive device to be positioned within the display area while still receiving sufficient ambient light for accurate sensing.
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 configuration allows for a narrower edge area, facilitating a full-screen display while maintaining effective brightness adjustment, enhancing user experience by ensuring the display panel's transparency and performance.
Implementation Method 1
a photosensitive device configured to sense ambient light
Data Source
AI summary
The present disclosure provides a display panel, a manufacturing method thereof, and a display device. The display panel includes: a backlight module configured to provide a light source; a cover plate on a light-emitting side of the backlight module; a display module between the cover plate and the backlight module; and a photosensitive device configured to sense ambient light. The photosensitive device is between the cover plate and the backlight module, and at an edge of the cover plate.