OLED Display Control Device Row Block Segmentation
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Solution Overview
Problem
In OLED display devices, the short writing time period for black data insertion can lead to insufficient data voltage writing time, affecting display quality and motion picture response time.
Innovation Solution
A display control device with a first driving unit supplying data voltage to columns and a second driving unit selecting rows, implementing a method where data voltage is sequentially supplied to one block of rows, black level voltage to another block, and either data or black voltage to specific rows, optimizing writing time and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If black data insertion is performed to reduce motion picture response time, then display quality of moving picture is improved, but writing time period for data voltage becomes insufficient
Solution Approach 1:
The display panel rows are divided into multiple blocks, and black data insertion is performed selectively in specific blocks rather than uniformly across all rows. This segmentation allows certain blocks to maintain full writing time for image data while other blocks implement black data insertion, thus resolving the contradiction between sufficient writing time and motion picture response time improvement.
Solution Approach 2:
Different writing time characteristics are applied to different blocks of the display panel. Blocks requiring sufficient writing time for image data are treated differently from blocks where black data insertion is prioritized for motion picture response. This local differentiation allows each block to have optimized characteristics for its specific function.
2Speed
If black data insertion is performed in all rows, then motion picture response time is reduced, but the writing time for image data becomes insufficient
Solution Approach 1:
The display panel is divided into multiple blocks, and black data insertion is selectively applied to specific blocks rather than uniformly to all rows. This allows the system to achieve motion picture response time improvement in selected blocks while preserving sufficient writing time in other blocks for high-quality image display.
Solution Approach 2:
Instead of applying black data insertion to all rows (excessive action), the invention applies it only to specific blocks where it is most beneficial (partial action). This partial application achieves the motion picture response time improvement without completely sacrificing image data writing time across the entire display.
Data Source
AI summary
A display control device for controlling a display device including a display panel having a plurality of pixels arranged in rows and columns includes: a first driving unit supplying a data voltage corresponding to a luminance to the pixels by the columns; and a second driving unit selecting the pixels receiving the data voltage by the rows, wherein the first driving unit and the second driving unit, in one frame: sequentially supply the data voltage for an image display to the pixels of a first block including a first group of the rows; supply a black level voltage to the pixels of a second block including a second group of the rows; and supply the black level voltage to the pixels in at least one of the rows of the first block while the black level voltage is supplied to the pixels of the second block.