Display Panel Emission Frequency Switching for Low-Lag Luminance Control
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Solution Overview
Problem
Display devices experience delays in image rendering due to lagging periods between input image data provision, leading to increased delay times in image display based on emission signal frequency.
Innovation Solution
A display panel driver generates emission signals at varying frequencies in different periods, predicts input image data using synchronization signals, and compensates gamma voltage and bias voltage to reduce delay times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the emission signal frequency is increased to reduce delay time, then the image display speed is improved, but the luminance stability deteriorates
Solution Approach 1:
The emission signal frequency is dynamically adjusted based on the operational period. In the first period, a first frequency is used, while in the second period, a second frequency different from the first is used. This dynamic frequency adjustment allows the system to optimize between delay reduction and luminance stability depending on the timing context.
Solution Approach 2:
The patent changes the frequency parameter of the emission signal between different periods. By transitioning from a first frequency in the first period to a second frequency in the second period, the system adapts to different operational requirements, reducing delay when needed while maintaining luminance stability during other periods.
2Loss of time
If the emission signal frequency is changed to reduce delay time, then the image display speed is improved, but the display stability deteriorates
Solution Approach 1:
The system dynamically switches between different emission signal frequencies based on the operational period. This dynamic approach allows the display to achieve faster response times when needed while maintaining stability during other periods, resolving the contradiction between speed and stability.
Solution Approach 2:
The patent implements periodic action by dividing operation into distinct periods (first period and second period) with different emission signal frequencies. This periodic variation allows the system to alternate between high-speed display modes and stable display modes, achieving both goals over time.
Data Source
AI summary
A display device includes: a display panel including a pixel configured to emit light in response to an emission signal; and a display panel driver configured to drive the display panel, wherein the display panel driver is configured to generate the emission signal of a first frequency in a first period in which input image data is received from a processor, and to generate the emission signal of a frequency different from the first frequency in a second period different from the first period.