Display Substrate Light-Shielding Layout for Full-Screen Optics
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Solution Overview
Problem
Existing display apparatuses face challenges in achieving a high screen-to-body ratio due to the need to accommodate front-facing devices like cameras and sensors, leading to non-display areas that reduce the effective display area.
Innovation Solution
A display substrate design featuring a light-shielding layer with openings and power lines that allow for the integration of front optical components without overlapping projections, ensuring stable power supply and shielding ambient light, thereby increasing the display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If front-facing devices (camera, sensors) are arranged toward the front side of the display apparatus, then these devices can collect information in the environment, but the screen-to-body ratio is reduced due to the creation of non-display areas
Solution Approach 1:
The patent positions front-facing devices in the peripheral area surrounding the display area, utilizing the spatial dimension around the display region. This allows the devices to be integrated without occupying the display area itself, thereby maintaining the screen-to-body ratio while enabling information collection functions.
Solution Approach 2:
The patent creates a differentiated structure where the peripheral area surrounding the display area has different functional properties than the display area itself. The peripheral area is designed to accommodate front-facing devices, while the display area maintains full display functionality, allowing each region to serve its optimal purpose.
2Area of stationary object
If the display area is increased to achieve full-screen display, then the screen-to-body ratio improves, but there is insufficient space to accommodate front-facing devices for environmental sensing
Solution Approach 1:
The patent extends the functional space to the peripheral area surrounding the display area, utilizing the dimension around the display region to house front-facing devices. This resolves the space conflict by using previously underutilized peripheral regions for sensing functions.
Solution Approach 2:
The peripheral area is designed to serve multiple functions: it surrounds and protects the display area while simultaneously providing space for front-facing devices. This multi-functional design allows the display apparatus to achieve both full-screen display and environmental sensing capabilities.
3Reliability
If power lines are routed through the display area to supply power to sub-pixels, then pixel operation is maintained, but light interference increases and display quality deteriorates
Solution Approach 1:
The patent segments the power supply structure into a power bus located in the peripheral area and separate power sub-lines that extend into the display area. This segmentation allows the main power transmission to occur outside the display area (avoiding light interference) while still delivering power to individual sub-pixels through dedicated sub-lines.
Solution Approach 2:
The power sub-lines act as intermediaries that connect the power bus in the peripheral area to the sub-pixels in the display area. These intermediate conductors enable power transmission without requiring thick power lines to traverse the entire display area, thereby reducing light interference while maintaining pixel operation stability.
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
The design enhances the screen-to-body ratio by allowing front optical components to be integrated without reducing the display area, while maintaining stable pixel operation and reducing light interference.
Implementation Method 1
a first light-shielding layer disposed on a side of the base substrate, the first light-shielding layer being located at least in the first display area and having a plurality of openings arranged in an array
Implementation Method 2
The plurality of first power sub-lines are located in the first display area and are electrically connected to the first power bus. The plurality of first power sub-lines are configured to provide first power signals to the plurality of first sub-pixels
Data Source
AI summary
A display substrate includes a base substrate, a first light-shielding layer, a plurality of first sub-pixels and a first power line. The first light-shielding layer is disposed on a side of the base substrate, the first light-shielding layer is located at least in a first display area, and has a plurality of openings arranged in an array. The first sub-pixels are disposed at a side of the first light-shielding layer away from the base substrate and are located in the first display area, and orthogonal projections of the first sub-pixels on the base substrate are non-overlapping with orthogonal projections of the openings on the base substrate. The first power line includes a first power bus and a plurality of first power sub-lines, and the first light-shielding layer is electrically connected to the first power line.