Redundant Pixel Emitter Layout for Uniform Display Luminance
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Solution Overview
Problem
Existing display devices with redundant light emitters suffer from non-uniformity in light emitter distances, leading to bright lines and dark lines, which degrade display quality.
Innovation Solution
The display device incorporates a substrate with pixels arranged in a matrix, each pixel containing a first light emitter for normal driving and a second light emitter for redundant driving, both with the same emission characteristics. A drive controller selectively activates these emitters to maintain uniform average distances between light emitters in adjacent rows and columns, ensuring a ratio of 0.8 to 1.2 between different average distances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the second light emitter is arranged at the same position as the first light emitter, then the pixel structure is simple, but the average distance between light emitters in adjacent rows becomes non-uniform causing bright lines and dark lines
Solution Approach 1:
The second light emitter is arranged asymmetrically relative to the first light emitter, with a predetermined offset distance in the row direction. This asymmetric arrangement ensures that when the first light emitter is in a normal driving row and the second light emitter is in a redundant driving row, the average distance between light emitters remains substantially uniform across all rows, preventing bright lines and dark lines while maintaining simple pixel structure.
2Manufacturing precision
If the average distance between light emitters is made uniform, then display quality improves, but the arrangement becomes complex
Solution Approach 1:
The patent applies local quality by making the offset distance between the first and second light emitters position-dependent. The offset distance varies according to the row position, being set to different values in different row regions. This localized adjustment ensures uniform average distances across all rows while maintaining a relatively simple overall arrangement structure.
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
This configuration reduces the occurrence of bright lines and dark lines, thereby enhancing display quality and ensuring full-color high-definition image display with improved luminance uniformity.
Implementation Method 1
a first light emitter 41 for normal driving and a second light emitter 42 for redundant driving
Data Source
AI summary
A display device includes a substrate including a mount surface, pixels arranged in a matrix on the mount surface and each including a first light emitter for normal driving and a second light emitter for redundant driving having a same emission characteristic as the first light emitter, and a drive controller. When the drive controller performs first redundant driving with a row being a redundant driving row and a row adjacent to the redundant driving row being a normal driving row, the first light emitter and the second light emitter in each pixel are arranged to satisfy a ratio of a second average distance to a first average distance being 0.8 to 1.2.