Display Panel Time-Division Drive Circuit for High Transmittance
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Solution Overview
Problem
In full-screen display panels, the reduced pixel density in light-transmissive regions due to peripheral placement of pixel circuits leads to differing display effects between the light-transmissive and conventional display regions, compromising the overall display quality.
Innovation Solution
A display panel design with a first display region having high light transmittance and a second display region with gating switch units that drive both first and second display units in a time-division manner, allowing for increased pixel density in the first region without additional drive units, thus maintaining similar display effects across regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If pixel circuits are disposed in the peripheral region of the light-transmissive region, then the light transmittance of the light-transmissive region is ensured, but the PPI of the light-transmissive region is reduced, reducing the display effect
Solution Approach 1:
The patent applies time-division driving to dynamically switch between driving the light-transmissive region and the display region. By controlling the gating switch unit to alternately connect the drive unit to different regions in different time periods, the system achieves high PPI in the light-transmissive region without requiring additional pixel circuits, thus resolving the contradiction between light transmittance and display effect
Solution Approach 2:
The drive unit is designed to serve multiple functions by driving both the light-transmissive region and the display region through the gating switch unit. This multi-functionality allows a single drive unit to maintain high PPI in the light-transmissive region while also driving the display region, eliminating the need for separate drive units and resolving the contradiction
2Manufacturing precision
If additional drive units are set to drive the first display unit, then the display effect is improved, but the occupied area and circuit complexity in the second display region increase
Solution Approach 1:
The existing drive unit is made multi-functional by introducing a gating switch unit that allows it to drive both the second display unit and the first display unit (light-transmissive region) through time-division multiplexing. This eliminates the need for additional drive units, reducing circuit complexity while maintaining high display effect
Solution Approach 2:
The patent merges the driving function for both regions into a single drive unit through the gating switch unit. By combining the control of the light-transmissive region and the display region into one drive unit with time-division switching, the circuit complexity is reduced while achieving consistent high PPI and display effect across both regions
Data Source
AI summary
A display device and a display panel including a first display region and a second display region. The light transmittance of the first display region is greater than the light transmittance of the second display region. At least one first display unit is disposed in the first display region. At least one second display unit, at least one drive unit, and at least one gating switch unit are disposed in the second display region. The at least one drive unit is connected to the input end of the at least one gating switch unit in a one-to-one manner. The first output end of each gating switch unit is connected to one of a first display unit and a second display unit and the second output end of the each gating switch unit is connected to the other one of the first display unit and the second display unit.