Display Substrate with Shared Pixel Circuits for Camera-Hole Transmittance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display technologies face challenges in achieving high light transmittance and good display effects in full display regions with camera holes due to the limitations of pixel circuit layouts, particularly when using the pixel circuit built-in method, which struggles with high pixel density and conductive connection line issues.
Innovation Solution
A display substrate design that incorporates a pixel circuit built-in method with a one-drive-many configuration, where multiple light emitting elements share a single pixel circuit, and reset transistors are partially overlapped with light emitting elements to optimize circuit layout and reduce the number of pixel circuits, enhancing light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the pixel circuit built-in method is used to increase pixel density, then the display resolution is improved, but the light transmittance deteriorates due to increased pixel circuit area
Solution Approach 1:
Multiple light emitting elements share a common pixel circuit, merging the functions of multiple independent circuits into one. This reduces the total pixel circuit area and increases light transmittance while maintaining high pixel density through the shared circuit architecture
Solution Approach 2:
The pixel circuit is positioned in the vertical dimension by overlapping its orthographic projection with the light emitting element. This three-dimensional arrangement allows the pixel circuit to occupy space without increasing the planar area, thereby improving light transmittance while maintaining pixel density
2Area of stationary object
If more pixel circuits are added to cover more light emitting elements, then the display coverage is improved, but the number of conductive connection lines increases causing manufacturing complexity
Solution Approach 1:
A single pixel circuit is designed to control multiple light emitting elements, making the pixel circuit multi-functional. This universal approach reduces the total number of pixel circuits and conductive connection lines needed, simplifying manufacturing while achieving full display coverage
Solution Approach 2:
Multiple light emitting elements are merged under the control of one pixel circuit, reducing the number of independent circuits required. This merging strategy decreases the complexity of conductive connection lines while maintaining comprehensive display coverage
3Reliability
If reset transistors are separated from light emitting elements, then the circuit functionality is ensured, but the pixel circuit area increases reducing light transmittance
Solution Approach 1:
The reset transistor is repositioned in the vertical dimension by overlapping its orthographic projection with the light emitting element. This three-dimensional arrangement allows the reset transistor to maintain its circuit functionality while occupying minimal planar area, thereby maximizing light transmittance
Solution Approach 2:
The reset transistor is nested within the spatial footprint of the light emitting element by overlapping their projections. This nesting arrangement allows both components to coexist in the same planar space, ensuring circuit functionality while preserving light transmittance
Data Source
AI summary
Provided is a display substrate including a base substrate, multiple first pixel circuits (11) and multiple first light emitting elements (13) located in a first display region (A1). At least one first pixel circuit (11) is electrically connected with at least two first light emitting elements (13). At least one first pixel circuit (11) includes at least one reset transistor. An orthographic projection of at least one first light emitting element (13) on the base substrate is at least partially overlapped with an orthographic projection of a reset transistor (T1, T7, or T8) of the at least one first pixel circuit (11) on the base substrate.