Under-Display Pixel Circuit Layout for Component Areas
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Solution Overview
Problem
Display devices face challenges in enlarging the display area to accommodate electronic components, limiting their ability to effectively display images in areas where components are arranged, especially with increased functionality and varied applications.
Innovation Solution
The display device incorporates a configuration with multiple light-emitting elements and pixel circuits, where emission control transistors connect light-emitting elements to pixel circuits, allowing for alternating operation modes to optimize display area usage and improve resolution, even in areas with integrated components like cameras or sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic components are arranged in the display area, then device functionality is improved, but the display area is reduced
Solution Approach 1:
The display area is divided into first display area and second display area, with different pixel circuits controlling different regions. The first pixel circuit controls both first light-emitting element (in first display area) and second light-emitting element (in second display area where component is arranged), enabling independent control of display regions to accommodate components while maintaining display functionality.
Solution Approach 2:
The first pixel circuit is designed to output driving currents for multiple light-emitting elements (both first and second light-emitting elements), making it a multi-functional circuit that can drive displays in different areas including regions with integrated components, thereby maintaining display area while accommodating electronic components.
2Area of stationary object
If multiple light-emitting elements are controlled by one pixel circuit, then display area is enlarged, but device complexity increases
Solution Approach 1:
Multiple emission control transistors (first and second emission control transistors) are merged into a single pixel circuit, allowing one pixel circuit to control multiple light-emitting elements. This consolidation reduces the total number of pixel circuits needed and simplifies the overall structure while enabling display in areas with integrated components.
3Adaptability or versatility
If emission control transistors are added to connect pixel circuits to light-emitting elements, then display flexibility is improved, but manufacturing complexity increases
Solution Approach 1:
Emission control transistors are introduced to dynamically control the connection between pixel circuits and light-emitting elements. These transistors can selectively connect or disconnect based on operational requirements, enabling flexible display modes (such as alternating between first and second light-emitting elements in odd and even frames) while managing the complexity through controlled switching behavior.
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
This configuration enhances the display area's ability to show images by optimizing light emission and resolution, even in spaces where components are present, thereby expanding the device's application range and functionality.
Implementation Method 1
a first light-emitting element disposed in a first display area... the first light-emitting element may emit light in response to the first driving current
Data Source
AI summary
A display device includes a first light-emitting element disposed in a first display area, a second light-emitting element disposed in a second display area, a first pixel circuit disposed in the first display area, where the first pixel circuit output a first driving current for driving at least one selected from the first light-emitting element and the second light-emitting element, a first emission control transistor which connects the first pixel circuit to the first light-emitting element, and a second emission control transistor which connects the first pixel circuit to the second light-emitting element.