GOA Drive Circuit Layout for Consistent Partition Refresh Pulses
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Solution Overview
Problem
In OLED displays using LTPO technology, the inconsistency of pulse signal widths during partition refresh due to overlapping pulse signals in different areas leads to ineffective partitioning functions, resulting in increased power consumption.
Innovation Solution
A drive circuit with multiple GOA circuits and partition control signal lines, where each GOA circuit combination is controlled by a different partition control signal line, ensuring consistent pulse signal widths and reducing power consumption by alternating connections and controlling input signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single partition control signal line is used to control GOA circuits during partition refresh, then the partitioning function is simplified, but pulse signal width becomes inconsistent due to overlapping pulse signals from different areas
Solution Approach 1:
The single partition control signal line is segmented into multiple independent partition control signal lines (first partition control signal line, second partition control signal line, etc.), each controlling specific GOA circuit combinations. This segmentation prevents signal interference between different partition areas and ensures consistent pulse signal widths across all regions during partition refresh.
Solution Approach 2:
Multiple partition control signal lines act as intermediaries between the control end and different GOA circuit combinations, isolating the control signals for different partition areas and preventing overlapping pulse signals from affecting each other, thereby maintaining pulse width consistency.
2Manufacturing precision
If multiple partition control signal lines are used to control different GOA circuit combinations, then pulse signal width consistency is improved, but device complexity increases
Solution Approach 1:
Different partition control signal lines are assigned to control specific local regions (GOA circuit combinations) based on their spatial distribution. The first partition control signal line controls certain GOA circuits while the second partition control signal line controls other GOA circuits, creating localized control zones that eliminate signal interference and ensure pulse width consistency in each region.
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3(a)~3(d)
AI summary
A drive circuit and a driving method are provided, and relate to the field of display technologies, to resolve a problem of inconsistent pulse widths of overlapping pulse signals in different rows during partition refresh. A drive circuit (50) includes a plurality of first GOA circuits (51) and p first partition control signal lines (52), p is an integer greater than or equal to 2, the plurality of first GOA circuits (51) are sequentially cascaded, the plurality of first GOA circuits (51) include n first GOA circuit combinations, n is an integer greater than or equal to p, and first GOA circuits (51) in each first GOA circuit combination are sequentially cascaded; and a partition control end of each first GOA circuit (51) in a (px+y)th first GOA circuit combination in the n first GOA circuit combinations is coupled to a yth first partition control signal line (52) in the p first partition control signal lines (52), x is an integer greater than or equal to 0 and less than or equal to (n-y)/p, and y is an integer greater than or equal to 1 and less than or equal to p.