Display Panel Driving Method for Color Shift Reduction
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Solution Overview
Problem
Current liquid crystal display panels using vertical alignment technology suffer from significant color shift and image quality deterioration when viewed from large angles, due to the linear change of pixel brightness with voltage, which cannot be effectively improved without affecting panel transmittance.
Innovation Solution
A driving method and device that alternately drive adjacent sub-pixels with different positive and negative time intervals for data driving signals in the column direction, controlling the charging duration to create high-voltage and low-voltage pixel units, thereby improving color shift without redesigning metal traces or TFT components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If sub-pixels are divided into primary and secondary pixels with different driving voltages to improve color shift, then color shift is improved, but panel transmittance is affected due to redesign of metal trace or TFT components
Solution Approach 1:
The patent changes the driving parameters (voltage polarity and time interval) of adjacent sub-pixels rather than changing the physical structure. By applying different positive and negative time intervals to alternating sub-pixels, the patent achieves different charging capabilities and equivalent charging voltages without redesigning metal traces or TFT components, thus improving color shift while maintaining panel transmittance
Solution Approach 2:
The patent segments the driving process into different time intervals for adjacent sub-pixels. By dividing the driving period into distinct positive and negative driving time intervals, the patent creates high-voltage and low-voltage pixel units through different charging durations, achieving color shift improvement without structural changes
2Ease of manufacture
If different driving voltages are applied to primary and secondary pixels to improve color shift, then color shift is improved, but device complexity increases due to need for redesigned components
Solution Approach 1:
The patent applies parameter changes by modifying the driving signal characteristics (voltage polarity and time interval duration) rather than changing the physical device structure. This allows different charging capabilities to be achieved through control signals alone, avoiding the need to redesign metal traces or TFT components and thus reducing device complexity
Solution Approach 2:
The patent uses the existing pixel structure and driving circuitry to create different driving effects by copying and varying the driving signal parameters. By using the same physical components with different signal characteristics (positive vs negative time intervals), the patent achieves the desired color shift improvement without additional complex components
Data Source
AI summary
Disclosed are a driving method, a driving device and a driving device of a display panel. The method comprises the following steps of: performing positive driving on a first adjacent sub-pixel of the two adjacent sub-pixels in a second direction in a first time interval, and performing negative driving on a second adjacent sub-pixel of the two adjacent sub-pixels in a second direction in a second time interval, wherein the duration of the first time interval is different from that of the second time interval. Obviously, due to the difference between the positive driving duration and the negative driving duration, the charging ability is different, forming a high-low voltage pixel unit interspersed arrangement, thus improving the color shift.