Timing Control Circuit for Display Panel Luminance Consistency
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Solution Overview
Problem
Conventional display panels experience reduced brightness and performance when the refresh rate is varied, leading to inconsistent luminance and display quality.
Innovation Solution
A timing control device with a control circuit that adjusts gate scanning control signals or data transmission control signals to maintain balanced luminance by adjusting data charging time in response to changes in refresh rate, using a combination of phase shifting and duty cycle adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the display refresh rate is lowered to save power or reduce motion blur, then energy consumption decreases, but the displayed brightness reduces due to shorter data charging time
Solution Approach 1:
The patent implements dynamic adjustment of the data charging time based on the actual refresh rate. The timing control device monitors the refresh rate and dynamically modifies the data charging time parameter to compensate for brightness reduction at lower refresh rates, enabling the system to adaptively maintain performance across varying operating conditions
Solution Approach 2:
The patent changes the data charging time parameter in response to refresh rate variations. By adjusting this timing parameter, the system compensates for the reduced brightness effect caused by shorter charging periods at lower refresh rates, thereby maintaining consistent display quality while allowing refresh rate optimization
2Illumination intensity
If the data charging time is extended to maintain brightness at lower refresh rates, then displayed brightness is maintained, but the timing synchronization between gate scanning and data transmission becomes complex
Solution Approach 1:
The patent introduces a timing control device as an intermediary component that manages the synchronization between gate scanning signals and data transmission signals. This dedicated control unit simplifies the overall system architecture by centralizing the timing adjustment logic, making it easier to manage complex timing relationships without distributing complexity across multiple components
Solution Approach 2:
The timing control device performs preliminary adjustment of the data charging time before data transmission begins. By pre-calculating and setting the appropriate charging time based on the detected refresh rate, the system avoids complex real-time adjustments during operation, simplifying the control mechanism while maintaining brightness consistency
3Use of energy by moving object
If the refresh rate is varied to optimize power consumption, then energy efficiency improves, but display quality becomes inconsistent due to luminance variation
Solution Approach 1:
The patent implements a feedback mechanism where the timing control device continuously monitors the refresh rate and automatically adjusts the data charging time in response. This closed-loop control ensures that display quality remains consistent across different refresh rates, as the system responds to actual operating conditions and compensates for quality degradation in real-time
Data Source
AI summary
A timing control device for the display panel includes a control circuit. The control circuit is configured to generate a plurality of gate scanning control signals and a data transmission control signal. In response to that a display refresh rate changes from a first frequency to a second frequency, the control circuit adjusts the plurality of gate scanning control signals to generate a plurality of adjusted gate scanning control signals, or adjusts the data transmission control signal to generate an adjusted data transmission control signal, for driving a display panel under the second frequency as the display refresh rate.