Superimposed Driving Modules for Mini-LED Gray Level Control
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Solution Overview
Problem
Existing mini-LED display panel technologies face limitations in efficiently adjusting brightness, resulting in a restricted number of gray levels, which affects image quality due to the properties of LED lights and other factors.
Innovation Solution
A display panel driving circuit with multiple superimposed driving modules, each comprising a scan control transistor, a switch transistor, and a drive transistor, where the transistors are selectively switched on by chip select signals to adjust the electric current passing through the light-emitting diode, allowing for increased brightness levels and gray scales.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single driving module is used in the display panel, then the device complexity is low, but the number of gray levels is limited and image quality deteriorates
Solution Approach 1:
The driving circuit is segmented into multiple driving modules (first driving module, second driving module, third driving module, fourth driving module), each capable of independent operation. Each module contains transistors (scan control transistor, switch transistor, drive transistor) that can be selectively activated to generate different gray levels, thereby increasing image quality without requiring a completely new circuit design
2Manufacturing precision
If multiple driving modules are superimposed to increase gray levels, then the number of gray levels increases, but the device complexity increases
Solution Approach 1:
The multiple driving modules are arranged in a nested or superimposed configuration where modules are stacked or layered. Each module contributes a portion of the total gray level control, with modules nested within a shared circuit framework that includes common scan signal terminals and power voltage input terminals, reducing overall complexity compared to completely separate circuits
Solution Approach 2:
Each driving module is designed with multi-functionality, capable of operating independently or in combination with other modules. The modules share common control structures (scan control transistors, switch transistors) and can be selectively activated based on the desired gray level, allowing a single set of circuit components to perform multiple gray level functions
3Illumination intensity
If traditional single-module driving circuit is used, then the device complexity is low, but the brightness adjustment capability is insufficient
Solution Approach 1:
The driving circuit implements dynamic brightness adjustment by selectively activating different combinations of driving modules based on the required gray level. The circuit transitions from a static single-module design to a dynamic multi-module system where modules can be turned on or off independently, enabling continuous brightness control across multiple gray levels
Data Source
AI summary
The present application discloses a display panel driving circuit and a display panel. The display panel driving circuit includes a driving circuit and a light-emitting diode. The driving circuit is connected to the light-emitting diode. The driving circuit includes a plurality of superimposed driving modules, and a corresponding number of driving modules are selectively conducted according to a preset grayscale. Each driving module includes a scan control transistor, a switch transistor and a drive transistor, in each driving module the scan control transistor is connected to the drive transistor via the switch transistor, in each driving module a first end of the scan control transistor is connected to a scan signal terminal, and the light-emitting diode and the drive transistors of the driving modules are sequentially connected. The present application can better increase the number of grayscales, thereby improving image quality.