Display Panel Pixel Circuit Relocation for Under-Screen Camera
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Solution Overview
Problem
Existing display technologies face challenges in achieving high light transmittance and uniform image display in under-screen camera regions, particularly due to the overlap of pixel circuits and light-emitting elements, which can lead to delayed turn-on times and screen flickering.
Innovation Solution
The display panel design includes a base substrate with distinct display regions, where the pixel circuit of the second pixel unit is located in the peripheral region and connected to the light-emitting element through a conductive line, allowing for separate placement of pixel circuits and light-emitting elements to improve light transmittance and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the pixel circuit is located in the display region overlapping with the light-emitting element, then the structure is compact and easy to manufacture, but the light transmittance is reduced and screen flickering occurs
Solution Approach 1:
The display panel is divided into a display region and a peripheral region. The light-emitting element is positioned in the display region while the pixel circuit is relocated to the peripheral region, physically separating the two components to eliminate overlap and improve light transmittance without complicating the manufacturing process.
Solution Approach 2:
The pixel circuit is moved from the two-dimensional plane of the display region to the peripheral region, utilizing spatial dimensionality change to resolve the conflict between compact structure and light transmittance requirements.
2Device complexity
If the pixel circuit is located in the display region overlapping with the light-emitting element, then the structure is compact, but the turn-on time is delayed and screen flickering occurs
Solution Approach 1:
By segmenting the display panel into distinct display and peripheral regions and placing the pixel circuit in the peripheral region, the patent eliminates the overlapping structure that causes delayed turn-on time and screen flickering, while maintaining overall structural simplicity.
Solution Approach 2:
The pixel circuit is extracted from the display region and placed in the peripheral region, removing the source of interference with the light-emitting element's operation, thereby eliminating turn-on delay and flickering issues.
3Manufacturing precision
If separate signal bus lines are used for different initialization signals, then the initialization control is precise and uniform, but the device complexity increases
Solution Approach 1:
Different signal bus lines are used in different regions: the first signal bus line supplies the first initialization signal to pixel circuits in the display region, while the second signal bus line supplies the second initialization signal to pixel circuits in the peripheral region. This localized differentiation enables precise initialization control without requiring complete system redesign.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes: a pixel unit, including a pixel circuit and a light-emitting element, the pixel circuit including a driving transistor, a first reset transistor, and a second reset transistor; the pixel unit including a first pixel unit and a second pixel unit; a first initialization signal line is connected with a first electrode of the first reset transistor in the first pixel unit; a second initialization signal line is connected with a first electrode of the second reset transistor in the first pixel unit; a third initialization signal line is connected with a first electrode of the first reset transistor in the second pixel unit; a fourth initialization signal line is connected with a first electrode of the second reset transistor in the second pixel unit; the first to third initialization signal lines are connected with a first signal bus line, respectively; a second signal bus line is connected with the fourth initialization signal line, the first signal bus line and the second signal bus line are insulated from each other.