AMOLED Pixel Circuit for Synchronous Display Brightness Compensation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing AMOLED display technologies face challenges in compensating for uneven brightness in synchronous display modes, as traditional compensation circuits are not applicable in these modes, leading to interference between left and right eye pictures in 3D displays.
Innovation Solution
A pixel structure with four transistors and two capacitors, along with a light emitting element, is designed to be electrically coupled to multiple control and power lines, allowing for adaptive operation in both non-synchronous and synchronous display modes, using specific transistor configurations and control signal timing to maintain consistent brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional compensation circuits are used in AMOLED displays, then brightness uniformity can be improved in non-synchronous display mode, but the circuits cannot be applied in synchronous display mode leading to interference between left and right eye pictures
Solution Approach 1:
The pixel circuit is designed with multiple transistors and capacitors that can operate in both synchronous and non-synchronous display modes. The circuit includes a first transistor for data signal input, a second transistor for power supply control, a third transistor for compensation, and a fourth transistor for light emitting element control, along with first and second capacitors for charge storage. This multi-functional design allows the same circuit to compensate for threshold voltage variations in both display modes, eliminating the need for different compensation circuits for different modes.
2Adaptability or versatility
If a pixel structure with multiple transistors and capacitors is used to achieve compensation in both display modes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The compensation function and the light emitting control function are merged into a single integrated pixel circuit. The first capacitor is connected between the first transistor and the third transistor to store compensation charge, while the second capacitor is connected between the third transistor and the light emitting element to store drive charge. This merging allows the circuit to perform both compensation and driving functions simultaneously, reducing the need for separate compensation circuits and minimizing overall device complexity.
Data Source
AI summary
A pixel structure, driving method thereof and self-emitting display using the same is disclosed. The pixel structure includes four transistors and two capacitors to compensate illuminating effect in both of a non-synchronous display mode and a synchronous display mode.