Asymmetric Pixel-Voltage Detection in Display Driving Circuits
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display devices experience image distortion due to differences in pixel driving voltage distortions at the boundaries of pixel driving areas, which are not effectively addressed by current technologies.
Innovation Solution
The display device employs a system where adjacent integrated circuits change their pixel driving voltage detection directions and orders to different directions and orders, minimizing the difference in pixel driving voltage distortions by compensating data voltages based on detection results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If adjacent integrated circuits detect pixel driving voltages in the same direction and order, then the detection process is simple and consistent, but image distortion occurs at the boundaries of pixel driving areas due to differences in pixel driving voltage distortions
Solution Approach 1:
Adjacent integrated circuits are configured to detect pixel driving voltages in different directions (first direction vs. second direction). This asymmetric detection approach compensates for boundary distortion effects, improving image quality at the cost of increased control complexity.
2Reliability
If pixel driving voltage detection is performed in a fixed direction, then the detection process is straightforward, but distortion differences at integrated circuit boundaries cause image defects
Solution Approach 1:
The detection direction of pixel driving voltages is dynamically adjusted for adjacent integrated circuits. Instead of a fixed detection direction, neighboring circuits alternate between first and second directions, making the detection process adaptive and improving image reliability.
3Manufacturing precision
If all integrated circuits use the same pixel driving voltage detection order, then the system operation is uniform and simple, but boundary distortion differences cause image defects
Solution Approach 1:
Different detection orders are applied to adjacent integrated circuits based on their local position. This local differentiation in detection ordering compensates for boundary-specific distortion effects, improving overall pixel driving voltage uniformity across the display.
Data Source
AI summary
A display device includes: a display panel in which a plurality of pixels are arranged in a display area to display an image; a scan driving circuit configured to supply compensation gate scan signals to the pixels on a horizontal line-by-horizontal line basis through compensation gate lines of the display area; a data driving circuit unit configured to: detect pixel driving voltages output from the pixels by the compensation gate scan signals; compensate and modulate data voltages using compensation data set by the pixel driving voltages; and supply the data voltages to data lines of the display area; and a display driving circuit configured to control a pixel driving voltage detection direction and order of the data driving circuit unit by supplying a direction switching signal to the data driving circuit unit.