Gate Doubling Driving Method for LCD Resolution and Speed
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Solution Overview
Problem
Conventional gate doubling driving methods for liquid crystal displays increase display speed to 240 Hz but result in reduced vertical resolution, compromising image quality.
Innovation Solution
An amended gate doubling driving method that alternates scan signals and data voltages between two rows of pixels over two frame periods, allowing for simultaneous display of two frame images to create a single overlapped image, thereby maintaining resolution while increasing display speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional gate doubling driving method is used to increase display speed to 240 Hz, then the display speed is improved, but the vertical resolution is reduced by half
Solution Approach 1:
The pixel rows are divided into two groups (first rows and second rows) that are driven differently. The gate driver selectively applies the same scan signal to adjacent pixel rows from different groups during specific frame periods, segmenting the driving approach to maintain resolution while achieving high-speed display
Solution Approach 2:
The gate driver is configured to supply the same scan signal to adjacent pixel rows in advance during specific frame periods, allowing the display to maintain full vertical resolution while achieving 240 Hz operation through pre-coordinated signal distribution
Data Source
AI summary
A liquid crystal display includes a display unit having a plurality of pixels in a plurality of first rows and second rows that are alternately arranged. A gate driver supplies a same scan signal to a plurality of pixels of a first row and a second row that are adjacent to each other among the plurality of first rows of pixels and the plurality of second rows of pixels at a first frame period and a second frame period that are continuous. A plurality of scan signals are respectively supplied to the plurality of second rows of pixels at the second frame period. A data driver generates a plurality of data voltages respectively corresponding to the plurality of first rows of pixels at the first frame period and generating a plurality of data voltages respectively corresponding to the plurality of second rows of pixels at the second frame period.