Display Device Sequential Gate Driving for Pixel Charge Rate
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Solution Overview
Problem
As the number of pixels increases in display devices, there is a problem of image quality degradation due to insufficient charge rate in liquid crystal display (LCD) devices, which affects the high resolution and performance of these devices.
Innovation Solution
The solution involves a display device configuration with specific arrangements of gate and data lines, where pixels of different colors are connected to different gate and data lines, and driven sequentially using start signals, and the application of data voltages with different polarities to improve the charge rate and image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of pixels is increased to achieve high resolution, then the display resolution is improved, but the charge rate of pixels becomes insufficient leading to image quality degradation
Solution Approach 1:
The gate lines are divided into multiple groups (first gate line group, second gate line group, third gate line group) corresponding to different color pixels (red, green, blue). Each group is controlled by separate start lines and gate drivers, allowing independent sequential driving. This segmentation enables the pixel array to be driven in a systematic sequence that ensures adequate charging time for each pixel group, resolving the charge rate insufficiency problem while maintaining high resolution.
2Reliability
If sequential driving of color pixels is implemented to improve charge rate, then the charge rate is improved, but the device complexity increases due to multiple start lines and gate line groups
Solution Approach 1:
Each start line (first start line, second start line, third start line) serves multiple functions: it initiates gate signals for a specific color pixel group and coordinates with corresponding gate line groups to ensure synchronized driving. The gate line groups themselves function both as signal transmission paths and as organizational units for color-specific pixel control. This multi-functionality reduces the need for additional dedicated components, managing device complexity while achieving sequential driving.
3Manufacturing precision
If multiple data lines with different polarities are used to drive pixel groups, then the image quality is improved through better voltage control, but the manufacturing complexity increases
Solution Approach 1:
Different data lines (first data line, second data line, third data line) are assigned different polarity characteristics tailored to specific pixel group requirements. For example, certain pixel groups may require positive polarity data voltages while others require negative polarity, optimizing the liquid crystal switching performance for each color and position. This localized optimization of voltage polarity improves image quality by ensuring each pixel group receives the most appropriate driving conditions, while the systematic assignment pattern helps manage manufacturing complexity through standardization.
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 enhances the charge rate of pixels, leading to improved image quality and display performance by ensuring that all pixels are driven effectively and receiving appropriate voltages, thereby preventing image degradation.
Implementation Method 1
Upon applying voltage to the two electrodes, liquid crystal molecules of the liquid crystal layer are rearranged such that an amount of transmitted light is controlled in the LCD device
Data Source
AI summary
A display device is capable of improving a charge rate of a pixel, the display device including: first color pixels; second color pixels; third color pixels; a gate lines connected to the first, the second and the third color pixels and extending along a first direction; a data line connected to at least one of the first, the second and the third color pixels and extending along a second direction; a first start line connected to at least one of the plurality of first color pixels; a second start line connected to at least one of the plurality of second color pixels; a third start line connected to at least one of the plurality of third color pixels; a gate driver connected to the first start line, the second start line, the third start line, and the gate lines; and a data driver connected to the data line.