Display Panel Driving Device Adjusting Sub-Pixel Charging Times
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Solution Overview
Problem
Liquid crystal displays suffer from color cast issues when viewed from the lateral side due to differences in pixel brightness, as conventional adjustments focus on front-side brightness, degrading color quality.
Innovation Solution
A driving device for a display panel with a gate driving unit, timing controller, and output enable controller adjusts the charging times of sub-pixel regions through scanning lines, controlling grayscale displays and preventing color cast by neutralizing brightness across regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional adjustment focuses on front-side brightness, then front-side display quality is optimized, but lateral viewing produces color cast and degraded quality
Solution Approach 1:
The patent divides the display panel into multiple regions (first display region and second display region) corresponding to different viewing angles. Each region is controlled by separate scanning lines (first scanning line and second scanning line) with different duty ratios, allowing independent brightness adjustment for front-side and lateral viewing conditions respectively
2Device complexity
If single scanning line controls all display regions, then device structure is simple, but charging time cannot be individually adjusted for different regions
Solution Approach 1:
The gate driving unit is segmented into multiple independent scanning lines (first scanning line connected to first display region, second scanning line connected to second display region). Each scanning line can be controlled independently by the timing controller to provide different charging durations to different display regions, enabling precise brightness control for various viewing angles
Data Source
AI summary
A driving device for a display panel, a display device and a driving method of a display panel are provided. The driving device for a display panel includes numerous sub-pixels. Each of the sub-pixels includes a first display region, a second display region, a first scanning line and a second scanning line. The first scanning line and the first display regions are connected. The second scanning line and the second display regions are connected. The driving device for a display panel further includes a gate driving unit. The gate driving unit is connected to the first scanning line and the second scanning line. The gate driving unit respectively controls charging times of the first display region and the second display region by the first scanning line and the second scanning line.