Display Substrate Layout for Under-Display Camera Load Balancing
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Solution Overview
Problem
The installation of a camera device in display devices, such as mobile phones and tablets, often necessitates a frame position that is not conducive to full-screen and narrow frame designs, as it requires space within the display region, leading to reduced display area and inconsistent signal line loads due to irregular notches in the screen.
Innovation Solution
A display substrate design that includes a base substrate with specific opening regions and signal lines, where the first and second opening regions, along with an inter-opening region, accommodate dummy sub-pixels and compensation capacitors to balance signal line loads and allow for a camera to be integrated within the display region, maintaining display quality and consistency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a camera device is installed in a frame position outside the display region, then the camera can be properly positioned, but the display area is reduced and the frame cannot be made narrow
Solution Approach 1:
The patent merges the camera device with the display region by positioning the camera within the display area and using the opening peripheral region as a shared space for both camera accommodation and signal line routing, thereby maximizing display area while maintaining camera functionality
Solution Approach 2:
The patent utilizes the opening peripheral region as an intermediate dimensional space between the display region and the camera device, allowing signal lines to extend through this peripheral zone to connect components without compromising the display area or camera positioning
2Adaptability or versatility
If opening regions are created for camera integration, then camera placement is enabled, but signal line loads become inconsistent due to irregular notches
Solution Approach 1:
The patent applies local quality by placing dummy sub-pixels specifically in the inter-opening region and compensation capacitors in opening peripheral regions, creating localized corrections that balance the signal line loads affected by the irregular notches while leaving the rest of the display region unchanged
Solution Approach 2:
The patent uses dummy sub-pixels that replicate the structure and electrical characteristics of real sub-pixels, placing them in the inter-opening region to simulate the load that would exist if actual display elements were present, thereby balancing the signal line loads through structural copying
Data Source
AI summary
A display substrate and a display device. In the display substrate, at least one of the inter-opening region, the first opening peripheral region and the second opening peripheral region includes a first virtual sub-pixel; the first signal line extends along a first direction and includes a first portion passing through the first opening peripheral region, the inter-opening region and the second opening peripheral region; the first portion passes through the first virtual sub-pixel, and the first virtual sub-pixel includes a first compensation capacitor, a first plate of the first compensation capacitor is in a same layer as the first portion of the first signal line and electrically connected with the first portion of the first signal line, and in a same layer as the second plate of the storage capacitor; the second plate is in a different layer from, insulated from, and overlaps with the first plate.