Display Panel Pixel Circuit Layout for Under-Screen Camera Regions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display technologies face challenges in achieving a high screen-to-body ratio while incorporating optical elements like cameras without compromising display quality and efficiency.
Innovation Solution
A display panel design with distinct pixel circuits and light-emitting devices in main and auxiliary regions, utilizing different initial signal voltages and light-transmissive conductive materials to facilitate camera integration while maintaining display functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a camera is integrated in the under-screen region to achieve high screen-to-body ratio, then the screen-to-body ratio is improved, but the display quality and efficiency are compromised
Solution Approach 1:
The display panel is divided into a main display region and an auxiliary display region. The main display region contains pixel circuits and light-emitting devices for normal display, while the auxiliary display region contains light-emitting devices for camera operation. This segmentation allows the camera to be integrated in the under-screen region without compromising the overall display quality, as each region can be independently optimized for its specific function.
Solution Approach 2:
Different initial signal voltages are applied to different regions: a first initial signal voltage for the main display region and a second initial signal voltage for the auxiliary display region. The auxiliary region uses a higher voltage to ensure proper reset of light-emitting devices during camera operation. This local quality adjustment ensures that each region maintains optimal display performance suited to its specific operational requirements.
2Device complexity
If the same initial signal voltage is used for all pixel circuits, then the circuit design is simplified, but the display uniformity across different regions is compromised
Solution Approach 1:
Different initial signal voltages are applied to different regions: a first initial signal voltage for the main display region and a second initial signal voltage for the auxiliary display region. The auxiliary region uses a higher voltage to ensure proper reset of light-emitting devices during camera operation. This local quality adjustment ensures that each region maintains optimal display performance suited to its specific operational requirements.
Solution Approach 2:
The patent changes the voltage parameter of the initial signal based on the functional requirements of different display regions. By adjusting the voltage level (a physical parameter) for the auxiliary display region compared to the main display region, the patent optimizes the reset effectiveness for camera-related operations while maintaining standard operation for the main display area.
3Ease of manufacture
If conventional conductive materials are used in the auxiliary region, then the manufacturing process is simplified, but the light transmission required for camera operation is insufficient
Solution Approach 1:
The patent employs a composite material strategy where the auxiliary display region uses a light-transmissive conductive material that combines both electrical conductivity and optical transparency. This composite material property allows the connection lines in the auxiliary region to conduct electrical signals while simultaneously permitting sufficient light transmission for camera operations, thus resolving the contradiction between manufacturing simplicity and light transmission requirements.
Solution Approach 2:
The patent applies a light-transmissive conductive material to the connection lines in the auxiliary display region, which changes the optical properties of the conductive material from opaque to transparent. This allows the conductive material to maintain its electrical function while becoming visually transparent, enabling light to pass through for camera operation.
Data Source
AI summary
A display panel includes a plurality of first pixel circuits, a plurality of second pixel circuits, a plurality of first light-emitting devices, a plurality of second light-emitting devices, a plurality of first initial signal lines and a plurality of second initial signal lines. A first pixel circuit is electrically connected to a first initial signal line and a first light-emitting device, and is configured to transmit a first initial signal transmitted by the first initial signal line to the first light-emitting device. A second pixel circuit is electrically connected to a second initial signal line and a second light-emitting device, and is configured to transmit a second initial signal transmitted by the second initial signal line to the second light-emitting device. A voltage value of the second initial signal is greater than a voltage value of the first initial signal.