Display Panel Reference-Point Shifting for Fixed-Image Pixel Stress
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Solution Overview
Problem
Emissive display devices experience stress on pixels during the display of fixed images, which can lead to degradation and reduced image quality.
Innovation Solution
A display device with a display panel and a drive controller that shifts the reference point of an image along specific routes within a route region, including multiple sub-routes and diagonal lines, to reduce stress on pixels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed image is displayed on the emissive display device, then the image can be clearly shown, but stress is applied to the pixels causing degradation and reduced image quality
Solution Approach 1:
The patent implements a dynamic reference point shifting mechanism that moves the reference point along predetermined routes (horizontal, vertical, diagonal) across the display region. This dynamic adjustment prevents static stress concentration on fixed pixels during fixed image display, thereby reducing pixel degradation while maintaining clear image presentation. The shift amount and route are controlled to optimize both pixel durability and image quality.
2Reliability
If the reference point is shifted along complex routes with multiple sub-routes and edge points, then stress on pixels is reduced, but the device complexity increases
Solution Approach 1:
The patent segments the reference point movement into multiple predefined routes (first route, second route, etc.) with specific sub-routes (first sub-route, second sub-route, etc.). Each route consists of discrete segments connecting key points (center point, first point, second point, etc.) through edge points. This segmentation allows the complex stress reduction problem to be solved through manageable, predetermined path configurations that reduce control system complexity while effectively distributing pixel stress.
Solution Approach 2:
The patent changes the positional parameter of the reference point along predetermined routes to achieve stress distribution. By varying the reference point position according to different routes and sub-routes (changing position parameters systematically), the patent reduces pixel stress without requiring complex real-time calculations, thereby balancing reliability improvement with acceptable device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces stress on pixels, enhancing the durability and image quality of emissive display devices by minimizing pixel degradation during fixed image display.
Implementation Method 1
LEDs generate light via the recombination of electrons and holes
Data Source
AI summary
A display device including: a display panel including a route region located in the display region; and a drive controller configured to generate image data such that a reference point of the image is shifted along a shift route, the route region includes a center point, first to fourth points, and first to fourth sides, the shift route includes a first route that includes: a first sub-route along which the reference point moves from the center point to the first point; a second sub-route along which the reference point moves from the first point to the third point; a third sub-route along which the reference point moves from the third point to the second point; a fourth sub-route along which the reference point moves from the second point to the fourth point; and a fifth sub-route along which the reference point moves from the fourth point to an end point.