Pixel Circuit Layout Using Shared Data and Driving Voltage Lines
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Solution Overview
Problem
Existing display technologies face challenges in integrating circuits due to the lack of efficient integration of circuits in high-resolution and definition display devices, requiring sophisticated micro-processing technology for pixel design and integration of circuits. The integration of circuits has become important and the demand for high resolution and integration of circuits.
Innovation Solution
The solution involves a pixel with a transistor a first transistor a first transistor a second transistor a second transistor a transistor a storage capacitor, a light-emitting element, and a second driving voltage line, with the transistor connected to a gate terminal of the first transistor, and a storage capacitor connected to an initialization voltage line, allowing for selective supply of data signals and driving voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pixels are made smaller to achieve high resolution, then the number of pixels per unit area increases, but the area available for circuit integration within each pixel decreases
Solution Approach 1:
The patent combines the data signal line and first driving voltage line into a single shared line structure. The first transistor selectively connects the pixel circuit to either the data signal or the first driving voltage based on the operation period, eliminating the need for separate dedicated lines and reducing overall pixel area requirements
Solution Approach 2:
The first driving voltage line serves multiple functions: it provides driving voltage during non-data-writing periods and can be selectively connected during data writing periods. The first transistor acts as a multi-functional switch that routes different signals (data signal or driving voltage) through the same physical pathway, maximizing space utilization
2Ease of manufacture
If sophisticated micro-processing technology is used for pixel design, then circuit integration capability improves, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The second transistor serves multiple functions: it acts as a switch during data writing periods and as a constant-on transistor during other periods. The storage capacitor maintains gate voltage during both data writing and non-data-writing periods. This multi-functionality reduces the need for additional dedicated components, simplifying the overall circuit design while maintaining integration capability
Solution Approach 2:
The circuit operates in different dynamic states based on the operation period. During data writing periods, the second transistor switches on and off to enable data input. During non-data-writing periods, the second transistor remains constantly on while the first transistor selectively connects the driving voltage. This dynamic operation allows a single circuit structure to handle multiple functions
Data Source
AI summary
A pixel includes a first transistor for controlling a driving current for light-emission of a light-emitting element, a second transistor for controlling a signal applied to a gate terminal of the first transistor by being turned on and off by a scan signal, and a storage capacitor, wherein either a data signal or a first driving voltage is selectively applied.