Display Substrate Shielding Layout for Under-Screen Sensor Stability
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Solution Overview
Problem
Electronic devices with notches or holes in the display screen for camera and sensor integration cannot achieve a full-screen display due to the area being unusable for image display, and external light interference affects the photosensitive components.
Innovation Solution
A display substrate with a shielding layer in the second display area to shield the electric field between signal lines and pixel circuits, allowing for a transparent display area that transmits light while maintaining normal component operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a notch or hole is provided in the display screen for camera and sensor integration, then photosensitive components can be integrated, but the area cannot be used to display images and external light interferes with the photosensitive components
Solution Approach 1:
The display screen is divided into a first display area (without polarizer, for camera/sensor) and a second display area (with polarizer, for normal display). This segmentation allows each area to have optimized properties for its specific function, resolving the conflict between integration capability and display quality
Solution Approach 2:
Different regions of the display screen are given different optical properties: the first display area uses a transparent structure without polarizer to allow light transmission for photosensitive components, while the second display area uses traditional polarized structure for normal display function. This local differentiation resolves the contradiction between integration and display quality
2Device complexity
If signal lines extend through the second display area above the pixel circuit, then routing is simplified, but electric field interference degrades signal reception
Solution Approach 1:
A shielding layer is introduced as an intermediary element between the signal line and the pixel circuit. This shielding layer acts as a mediator that blocks electric field interference from the pixel circuit while allowing the signal line to maintain its simplified routing path above the pixel circuit
Solution Approach 2:
The shielding layer is positioned in advance to prevent electric field interference before it can affect the signal line. By placing the shielding layer below the signal line and above the pixel circuit, the harmful electric field is blocked preliminarily, preventing signal degradation
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 a full-screen display by preventing signal interference and ensuring the stability of photosensitive components, improving user experience by maintaining display quality and functionality.
Implementation Method 1
the shielding layer is configured to shield an electric field between the portion of the first signal line located in the second display area and the pixel circuit
Data Source
AI summary
A display substrate, a display panel, and a display apparatus. The display substrate includes: a first display area including a plurality of first sub-pixels; a second display area including a plurality of second sub-pixels; a shielding layer provided in the second display area; a first signal line configured to provide a control signal to the first sub-pixels, wherein the first signal line extends from the first display area through the second display area, and a portion of the first signal line located in the second display area is provided above the shielding layer; and a pixel circuit provided below the shielding layer and configured to drive the second sub-pixels; wherein the shielding layer is configured to shield an electric field between the portion of the first signal line located in the second display area and the pixel circuit.