Screen Saver Controller Panel Block Load Life Data
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Solution Overview
Problem
Conventional display devices operate in screen saver mode without considering load data and life data of the display panel, leading to perceivable afterimages and reduced panel lifespan.
Innovation Solution
A screen saver controller that calculates load data and life data for each panel block, generates operation data to adjust the screen saver mode's start time and minimum luminance based on this data, and adjusts the display panel's luminance accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If screen saver mode is operated without considering load data and life data, then power consumption is reduced, but afterimages become perceivable and panel lifespan is reduced
Solution Approach 1:
The patent dynamically changes screen saver parameters (luminance level, activation timing) based on panel block-specific load data and life data. By adjusting these parameters according to accumulated stress values, the system optimizes the balance between power savings and panel protection, preventing afterimages while extending lifespan.
Solution Approach 2:
The patent divides the display panel into multiple panel blocks and applies different screen saver parameters to different blocks based on their individual load and life data. This localized approach allows each panel block to receive customized protection levels, preventing afterimages in high-stress areas while maintaining overall power efficiency.
2Device complexity
If screen saver mode is operated without considering load data and life data, then device complexity is reduced, but afterimages become perceivable
Solution Approach 1:
The patent calculates and stores load data and life data for each panel block in advance, before screen saver mode activation. This preliminary preparation of data allows the system to quickly determine appropriate screen saver parameters without complex real-time calculations, reducing control complexity while effectively preventing afterimages.
Solution Approach 2:
The patent uses accumulated life data as feedback to adjust screen saver parameters. By continuously monitoring panel block stress levels and using this information to modify screen saver behavior, the system prevents afterimages while maintaining manageable complexity through data-driven decisions.
Data Source
AI summary
A screen saver controller includes a load calculator for generating load data of each of a plurality of panel blocks included in a display panel based on input image data, a life calculator for generating life data of each of the panel blocks based on a deterioration stress value accumulated in the display panel, a first logic circuit for receiving the load data and the life data, and generating operation data based on the load data and the life data and a second logic circuit for receiving the input image data and the operation data, and generating screen saver data based on the input image data and the operation data. The screen saver controller adjusts a luminance of the display panel based on the screen saver data when operating in a screen saver mode for performing a screen saver operation.