LCD Driver Module Group Scanning for 3D Frame Rate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The frame rate of Liquid Crystal Displays (LCDs) and 3D imaging apparatuses using active shutter 3D technology are constrained by the reaction speed of liquid crystal materials, leading to suboptimal 3D image quality due to prolonged switching times.
Innovation Solution
The implementation of a driver module that performs a first frame scan and a second frame scan to drive a pixel array and control a backlight module, allowing for group-based scanning and correction of rows, thereby optimizing the display of left and right eye images and reducing the waiting time for the backlight module, ensuring efficient liquid crystal rotation and correct illumination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional single frame scan is used to drive LCD, then device complexity is low, but frame rate is limited by liquid crystal reaction speed
Solution Approach 1:
The pixel array is divided into multiple groups, with each group containing multiple rows. The scanning process is segmented into a first frame scan that processes all groups and a second frame scan that corrects specific groups. This segmentation allows parallel processing of multiple rows simultaneously, improving frame rate without excessively increasing device complexity.
Solution Approach 2:
The first frame scan performs preliminary scanning and pre-charging of all pixel rows in parallel. During this preliminary action, the backlight module is controlled to illuminate accordingly. The second frame scan then performs corrective scanning only on groups that need adjustment. This preliminary action approach allows the system to achieve higher frame rates by doing most work in parallel during the first scan.
2Speed
If liquid crystal materials are used for active shutter 3D display, then 3D imaging function is achieved, but switching time is prolonged due to LC reaction speed limitation
Solution Approach 1:
The display system uses periodic action by alternating between left eye and right eye images at high frequency. The driver module controls the pixel array and backlight module to switch between different image frames periodically.配合3D快门眼镜的同步开关，实现高速切换效果，克服了液晶材料响应速度慢的限制。
Solution Approach 2:
The first frame scan and second frame scan are continuously performed in sequence, with the backlight module continuously controlled to illuminate during both scans. This continuous useful action ensures that image display is maintained throughout the scanning process, achieving high frame rates without interruption while compensating for liquid crystal response time limitations.
3Productivity
If group-based parallel scanning is implemented, then frame rate is improved, but control complexity increases
Solution Approach 1:
The pixel array is divided into multiple groups, with each group containing multiple rows that can be scanned in parallel. The driver module controls scan lines and data lines to simultaneously drive multiple groups during the first frame scan. This segmentation enables parallel processing, improving scanning efficiency while distributing control complexity across multiple independent group controls.
Solution Approach 2:
The system implements feedback control where the driver module monitors the scanning process and determines which groups require correction in the second frame scan. Based on feedback from the first frame scan results, the system selectively applies correction only to necessary groups, optimizing the balance between scanning efficiency and control complexity.
Data Source
AI summary
Liquid Crystal Display (LCD), 3D imaging apparatus and operating methods thereof are disclosed. The operating method for the disclosed LCD includes the steps of: driving a pixel array of the LCD to display a frame of data by a first frame scan and a second frame scan; and, controlling a backlight module of the LCD in accordance with the first frame scan and the second frame scan. In the first frame scan, the scan lines of pixel array are driven in groups, wherein, in each group, all rows corresponding thereto are driven by identical data. The rows which have not been driven by correct data in the first frame scan are driven again and corrected in the second frame scan.