Display Device Control Circuit for Mini LED Brightness Regulation
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Solution Overview
Problem
Existing display devices face challenges in precisely regulating light emission from light emitting elements, such as mini LEDs, due to the large slope of the IV curve, making it difficult to control brightness and emission periods effectively.
Innovation Solution
A display device comprising a driving circuit and a control circuit that receives data voltage and digital signals to control the brightness and light emission period of light emitting elements, using a stop signal to manage the light emission period, thereby allowing for precise regulation of light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the light emitting element (mini LED) is used to provide high brightness, then the illumination intensity is improved, but the control precision of brightness and emission period deteriorates due to the large slope of the IV curve
Solution Approach 1:
The patent applies periodic action by controlling the light emitting element to emit light in periodic intervals rather than continuously. The control circuit generates a control signal that turns the light emitting element on and off at specific periods, thereby achieving precise control of both brightness and emission timing despite the large IV curve slope characteristic of mini LEDs
2Illumination intensity
If the light emitting element emits light continuously at high intensity, then the illumination intensity is improved, but the energy consumption increases
Solution Approach 1:
The control circuit implements periodic action by generating control signals that activate the light emitting element only during required time intervals. This periodic on-off control maintains high illumination intensity when needed while significantly reducing overall energy consumption compared to continuous operation
Solution Approach 2:
The patent applies dynamics by making the light emitting element's operation dynamic rather than static. The control circuit dynamically adjusts the emission timing and duration based on display requirements, allowing the system to adapt between high brightness states and low-power states to optimize energy efficiency
Data Source
AI summary
A display device includes a driving circuit and a control circuit. The driving circuit is configured to receive a data voltage in response to a scanning signal, and to control the brightness of a light emitting element according to the data voltage. The control circuit is configured to provide a stop signal to the driving circuit in response to a digital signal and the scanning signal, so as to stop the light emitting element from emitting light, and in turn control the light emission period of the light emitting element.