Display Luminance Control via Scaler-Driven Pixel Voltage Adjustment
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Solution Overview
Problem
In display devices where the power board directly provides power supply voltage to pixels without an integrated power supply circuit on the control board, the controller lacks the ability to control the power supply voltage, leading to inefficiencies and increased power consumption.
Innovation Solution
A display device with a scaler that determines luminance modes and adjusts power supply voltage levels based on these modes, using lookup tables to control an external power board to provide optimized voltage levels to pixels, thereby reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the power board directly provides power supply voltage to pixels without an integrated power supply circuit on the control board, then power consumption is reduced and device complexity is simplified, but the controller loses the ability to control the power supply voltage
Solution Approach 1:
The patent introduces a scaler as an intermediary component between the controller and the power board. The scaler receives control signals from the controller and translates them into appropriate power supply voltage levels for the power board. This mediator enables indirect control of the power supply voltage while maintaining the simplified external power board architecture, thus resolving the contradiction between device simplification and operational control.
2Ease of operation
If the controller integrates a power supply circuit to control power supply voltage, then power supply voltage control capability is improved, but power consumption increases and device complexity increases
Solution Approach 1:
The scaler acts as a control intermediary that enables the controller to regulate power supply voltage without directly integrating a power supply circuit. The scaler translates controller commands into appropriate voltage levels for the external power board, maintaining control capability while avoiding the power consumption and complexity overhead of integrated power supply circuits.
3Device complexity
If the power supply voltage is fixed without dynamic adjustment, then device complexity is reduced, but power consumption efficiency deteriorates
Solution Approach 1:
The patent implements dynamic power supply voltage adjustment through the scaler, which can vary voltage levels based on operational requirements such as luminance modes. This dynamic capability allows the system to optimize power consumption efficiency by matching power supply voltage to actual operational needs, while the scaler's modular design keeps the added complexity manageable.
Data Source
AI summary
A display device includes a display panel including pixels, a scan driver configured to provide scan signals to the pixels, a data driver configured to provide data signals to the pixels, a controller configured to control the scan driver and the data driver, a power board configured to generate a power supply voltage for the pixels, and a scaler configured to receive input image data from a host processor, to convert a data format of the input image data, to provide converted input image data to the controller, to determine a luminance mode of the display device, and to control the power board to adjust the power supply voltage according to the luminance mode.