Micro LED Display Panel Region Segmentation for Extended Light Emission
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Solution Overview
Problem
The long driving process of a pixel circuit in Micro LED displays reduces the light emission time of Micro LEDs, affecting display quality and yield.
Innovation Solution
The display panel is divided into regions, with different starting signal terminals used to drive shift registers and light emission controllers, allowing multiple rows of pixel units to be driven simultaneously, reducing the time occupied by the driving process and increasing light emitting time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a single scan start signal terminal is used to drive the pixel circuit, then the device complexity is reduced, but the light emitting time of Micro LED is reduced due to the long driving process
Solution Approach 1:
The display panel is divided into multiple regions along the column direction, with each region having its own scan start signal terminal. This segmentation allows different regions to be driven simultaneously with different scanning speeds, thereby extending the overall light emitting time while distributing the control complexity across multiple independent terminals
2Manufacturing precision
If the driving process time is extended to cover more pixel rows, then the display quality is improved, but the light emitting time of Micro LED is reduced
Solution Approach 1:
Different regions are driven in a periodic manner with different scanning speeds. Some regions use faster scanning while others use slower scanning, creating a periodic pattern that ensures all regions are refreshed within the frame time while maintaining extended light emitting time for the Micro LED
3Productivity
If multiple scan start signal terminals are used to drive different regions simultaneously, then the light emitting time is increased, but the device complexity increases
Solution Approach 1:
The scanning speed for each region is made dynamic rather than static. Each region can independently adjust its scanning speed according to its position and requirements, allowing the system to optimize light emitting time while managing complexity through adaptive, region-specific control parameters
Data Source
AI summary
Disclosed are a display panel and a display device. The display panel includes M rows and N columns of pixel units. The display panel is divided into R regions along a column direction, and an i-th region includes: (1+M(i−1)/R)-th row to a (Mi/R)-th row of pixel units. The display panel further includes M shift registers, M light emitting drivers, R light emitting control scan staring signal terminals, R scan start signal terminals for controlling time length and R scan start signal terminals for controlling current. An i-th row of pixel units is connected with an i-th shift register and an i-th light emitting driver, a light emitting driver connected to a first row of pixel units in the i-th region is connected with an i-th scan start signal terminal for controlling light emission.