Display Driver IC Pixel Charging via Segmented Banks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
As the number of pixels in displays increases, display driver integrated circuits face challenges in charging each pixel to the required voltage level, leading to distorted screens and flickering phenomena due to insufficient charging time and increased data processing demands.
Innovation Solution
The implementation of a display driver integrated circuit (DDI) with a timing controller, gate driver, and data driver, including shift registers, latches, digital analog converters, gamma blocks, amplifiers, and switches, to manage pixel charging and data processing efficiently, ensuring timely voltage application and reduced data load on converters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of pixels is increased to provide higher resolution, then the display resolution is improved, but the display driver integrated circuit cannot charge each pixel to the required voltage level in time
Solution Approach 1:
The patent divides the pixel array into multiple banks (first bank and second bank) with different voltage levels. Each bank is charged independently to its target voltage level, allowing parallel charging operations that reduce the overall charging time while ensuring each pixel reaches the required voltage level.
Solution Approach 2:
The patent pre-charges pixel electrodes to different voltage levels based on their location in the display. By anticipating the charging needs of different pixel regions and applying appropriate voltage levels in advance, the system ensures that all pixels are ready for display operation without delay.
2Manufacturing precision
If the number of pixels is increased to provide higher resolution, then the display resolution is improved, but the amount of data to be processed increases and slows down the driving speed
Solution Approach 1:
The display data is divided into multiple data sets corresponding to different pixel banks. Each data set is processed and transmitted independently, allowing parallel data processing that reduces the overall data processing time while supporting high-resolution displays.
Solution Approach 2:
The patent applies different voltage levels to different pixel banks, using higher voltage levels for pixels that require faster charging. This partial action approach optimizes the charging process by applying only the necessary voltage level to each pixel group, reducing overall processing time.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A display driver integrated circuit may include a controller configured to receive first image data from an application processor positioned outside the display driver integrated circuit and a data driver configured to receive the first image data from the controller.