Display Panel Row Driving for Longer Sub-Pixel Charging
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Solution Overview
Problem
The doubling of sub-pixel rows in display panels due to anti-peeping and sharing modes results in insufficient charging time, leading to uneven display and increased power consumption when using progressive scanning.
Innovation Solution
The implementation of alternating anti-peeping and shared row sub-pixels with dedicated driving circuits and light emitting control signals, doubling the charging time for each row while reducing power consumption by alternating data voltage adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If progressive scanning method is adopted to maintain fixed display frequency after doubling sub-pixel rows, then display frequency is maintained, but sub-pixel charging time is insufficient causing uneven display
Solution Approach 1:
The patent implements alternating scanning between anti-peeping rows and shared rows, creating periodic action patterns. By periodically switching between different row types with different charging requirements, the system ensures each row type receives adequate charging time while maintaining overall display frequency. This periodic alternation resolves the contradiction by distributing charging opportunities over time rather than requiring all rows to charge simultaneously.
Solution Approach 2:
The display panel rows are segmented into two distinct types: anti-peeping rows and shared rows. Each segment has different functional requirements and charging characteristics. By segmenting the rows and applying different scanning/control strategies to each segment, the patent enables tailored charging time management for each row type, thereby maintaining display uniformity while preserving overall display frequency.
2Speed
If progressive scanning method is adopted after doubling sub-pixel rows, then display frequency is maintained, but power consumption increases due to insufficient charging time
Solution Approach 1:
By implementing periodic alternating scanning between anti-peeping rows and shared rows, the system optimizes power consumption. Each row type is activated periodically rather than continuously, allowing sub-pixels to charge adequately during their active periods. This reduces the need for excessive driving voltages and current that would be required to force rapid charging in a progressive scanning approach, thereby lowering overall power consumption while maintaining display frequency.
Solution Approach 2:
The patent applies preliminary charging actions to sub-pixels before they are scanned and activated. By preparing the charging state of sub-pixels in advance during periods when they are not being displayed, the system ensures adequate voltage levels are reached without requiring high-power rapid charging during the active display period. This preliminary preparation reduces peak power consumption while maintaining the required display frequency.
Data Source
AI summary
A display panel includes a plurality of rows and a plurality of columns of sub-pixels, a plurality of rows of scanning lines, a first driving module and a light emitting control signal generation module; the sub-pixel is electrically connected to the scanning line and are configured to access a display data voltage under the control of a scanning signal provided by the scanning line; the first driving module includes a plurality of stages of first driving circuits; the light emitting control signal generation module includes a plurality of stages of generation circuits; the first driving circuit is configured to provide a scanning signal for two adjacent rows of sub-pixels; the generation circuit provides a light emitting control signal for at least two rows of sub-pixels; the plurality of rows and the plurality of columns of sub-pixels include a plurality of first-type sub-pixel rows and a plurality of second-type sub-pixel rows.