Display Panel Driver Layout Between Pixel Rows for Narrow Bezels
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Solution Overview
Problem
The conventional driver circuit placement on the left and right frames of LED display panels impedes the achievement of a narrow frame design, contradicting the trend towards reduced bezel widths.
Innovation Solution
The driver circuit, including shift register circuits, is integrated within the display area by positioning them between adjacent light-emitting element rows, allowing for a narrow or bezel-free frame design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the driver circuit is located on the left frame and right frame, then the driver circuit can be easily accessed and connected, but the frame width increases and narrow frame design cannot be achieved
Solution Approach 1:
The driver circuit is moved from the lateral frame areas (horizontal dimension) to the display area (utilizing vertical arrangement between light-emitting element rows). This dimensional relocation allows the driver circuit to occupy space that does not increase the frame width, thereby achieving narrow frame design while maintaining driver circuit functionality.
Solution Approach 2:
The patent employs a flexible layout where the driver circuit can be dynamically positioned within the display area according to the specific display panel configuration. The driver circuit is arranged between adjacent light-emitting element rows, allowing adaptive placement that optimizes both frame width reduction and manufacturing ease.
2Length of moving object
If the driver circuit is integrated within the display area, then the frame width is reduced, but the layout complexity and manufacturing precision requirements increase
Solution Approach 1:
The driver circuit is segmented into multiple stages of shift register circuits that are cascaded together. Each stage can be independently positioned and connected, which simplifies the manufacturing process by breaking down the complex integration into manageable segments. The segmentation allows for modular assembly within the display area without requiring extreme precision for the entire driver circuit at once.
Solution Approach 2:
The driver circuit is nested within the display area by positioning it between the light-emitting element rows. This nesting approach utilizes the existing spatial structure of the display panel, fitting the driver circuit into the available space without requiring additional external area, thereby reducing frame width while maintaining manufacturing feasibility.
3Area of moving object
If the driver circuit is placed in the display area, then the screen-to-body ratio increases, but the risk of transistor damage during bonding increases
Solution Approach 1:
The patent applies different protective measures to different regions of the pixel circuit. Specifically, the transistor is provided with a protection structure in areas where it may be damaged during bonding processes. This localized protection approach addresses the reliability concern without affecting the overall integration of the driver circuit within the display area, thus maintaining the high screen-to-body ratio.
Solution Approach 2:
The protection structure for the transistor is established beforehand during the manufacturing process, before the bonding operations that could cause damage. This preemptive protective measure ensures that the transistor is shielded from potential damage during subsequent bonding steps, thereby reducing the risk of transistor damage while allowing the driver circuit to be integrated within the display area.
Data Source
AI summary
Disclosed are a display panel and a display device. The display panel includes a display area, a plurality of light-emitting elements located in the display area, and at least one driver circuit located in the display area; the plurality of light-emitting elements includes a plurality of light-emitting element rows extend in a first direction and arranged in a second direction, where the first direction and the second direction intersect; the at least one driver circuit includes a plurality of shift register circuits disposed in cascade and a shift register circuit of the plurality of shift register circuits is located between adjacent light-emitting element rows of the plurality of light-emitting element rows.