Display Panel Driving Method Reducing Color Shift
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Solution Overview
Problem
Liquid-crystal display panels face color shift issues, particularly at larger screen sizes and viewing angles, and existing solutions like storage capacitors lower the aperture ratio.
Innovation Solution
A driving method and device that utilize a plurality of switch transistors and auxiliary electrodes made of the same material to establish a voltage difference between pixel electrodes, reducing color shift without affecting the aperture ratio, by controlling the switching of transistors with scanning lines to manage charge transfer between pixel electrodes and auxiliary electrodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a storage capacitor is disposed in the pixel electrode area to reduce color shift, then the viewing angle is improved, but the aperture ratio is lowered
Solution Approach 1:
The invention extracts the storage capacitor from the pixel electrode area and relocates it to the non-display area. This is achieved by extending the auxiliary electrode into the non-display area and forming the storage capacitor there, thereby eliminating the conflict between color shift correction and aperture ratio maintenance
Solution Approach 2:
The invention utilizes the non-display area (a different spatial dimension/region) to accommodate the storage capacitor, rather than competing for space within the pixel electrode area. This dimensional relocation resolves the space conflict while maintaining both viewing angle performance and aperture ratio
2Area of stationary object
If the auxiliary electrode is made of the same material as pixel electrodes, then the aperture ratio is maintained, but additional manufacturing steps are required
Solution Approach 1:
The invention merges the auxiliary electrode material with the pixel electrode material by using the same indium tin oxide (ITO) layer. The auxiliary electrode is formed as an extension of the pixel electrode structure, eliminating the need for separate material deposition steps and simplifying the manufacturing process
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 color shift and improves the viewing angle of liquid-crystal display panels while maintaining the aperture ratio, using indium tin oxide for the electrodes to enhance performance.
Implementation Method 1
turning on the third switch transistor under control of the second scanning line such that the second pixel electrode is in conduction with the auxiliary electrode, and turning off the first switch transistor and the second switch transistor under control of the first scanning line, such that a portion of the charge in the second pixel electrode is transferred to the auxiliary electrode
Data Source
AI summary
A display panel driving method, a driving device, and display device. The driving method includes steps of: performing a display, turning on first switch transistor and second switch transistor under control of first scanning line, and turning off third switch transistor under control of the second switch line, and inputting a data signal from data line to first pixel electrode and second pixel electrode through the first switch transistor and the second switch transistor and driving the pixel structure where the first pixel electrode and the second pixel electrode are located to display, and turning the third switch transistor under control of second scanning line and turning off the first switch transistor and the second switch transistor under control of the first scanning line to establish a preset voltage difference between the first pixel electrode and the second pixel electrode.