Dual-Gate Pixel Circuit With Sequential Emission for Luminance
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Solution Overview
Problem
Existing display technologies face challenges in achieving high-resolution displays with reduced pixel area and improved luminance.
Innovation Solution
A pixel structure incorporating a first transistor with dual gate electrodes, a second transistor, a third transistor, a light-emitting diode, and capacitors, with specific voltage transitions during initialization, compensation, programming, and emission periods, enabling a sequential emission method to enhance luminance and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pixel area is reduced to achieve high-resolution display, then the display resolution is improved, but the luminance of the pixel deteriorates
Solution Approach 1:
The patent implements sequential emission method where pixels are divided into multiple groups that emit light alternately in different time periods within each frame. This periodic action allows each pixel group to emit light at full brightness during its designated time slot, maintaining high luminance despite reduced pixel area, while the overall display achieves high resolution through the sequential activation of multiple pixel groups
Solution Approach 2:
The patent dynamically controls the emission timing of different pixel groups through multiple emission periods within a single frame period. By dynamically assigning different emission time slots to different pixel groups and controlling the driving voltages applied to transistors during these periods, the system maintains high luminance output from each pixel while achieving high overall display resolution
2Measurement precision
If the pixel area is reduced to achieve high-resolution display, then the display resolution is improved, but the emission duty of the pixel deteriorates
Solution Approach 1:
The patent divides each frame period into multiple emission periods, with each pixel group assigned to emit during its specific emission period. This periodic structure ensures that while individual pixels have reduced emission duty within each frame, the display as a whole maintains high resolution through the sequential emission of multiple pixel groups across different time periods
Solution Approach 2:
The patent segments the display pixels into multiple groups that operate in different time slots within a frame period. By segmenting the pixel array and assigning different emission timing to different segments, the system achieves high overall resolution while each segment maintains adequate emission duration for high luminance output
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
The proposed pixel structure increases emission duty and luminance, resulting in improved display quality by optimizing the driving method to achieve higher luminance and efficient pixel operation.
Implementation Method 1
a light emitting diode which includes a first electrode connected to the second node and a second electrode which receives a second power voltage
Data Source
AI summary
A pixel is disclosed that includes a first transistor, a second transistor, a third transistor, a light emitting diode, a first capacitor, and a second capacitor. The first transistor includes a first gate electrode connected to a first node, a second gate electrode which receives a write gate signal or an emission control signal, a first electrode which receives a first power voltage, and a second electrode connected to a second node.