In-Display Shift-Register Layout for Narrow-Frame Panels
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Solution Overview
Problem
The conventional driver circuit placement on the left and right frames of LED display panels impedes the development of narrow frames, as it occupies significant space and hinders the achievement of a frameless design.
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 more compact layout that reduces the frame width and potentially eliminates it entirely.
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 would otherwise be part of the display area, thereby reducing the frame width while maintaining manufacturability through standardized bonding processes.
Solution Approach 2:
The patent employs a flexible circuit board structure that allows the driver circuit to be dynamically positioned and connected. The circuit board can be bent or folded to accommodate the transition from frame location to display area location, enabling both narrow frame design and ease of connection during manufacturing.
2Length of moving object
If the driver circuit is integrated within the display area, then the frame width is reduced, but the layout becomes more complex and compact
Solution Approach 1:
The driver circuit is divided into multiple stages of shift register circuits that are cascaded and arranged in a modular fashion between the light-emitting element rows. This segmentation allows each module to be independently designed and connected, reducing overall layout complexity while achieving compact integration within the display area.
Solution Approach 2:
The driver circuit is nested within the display area by positioning it between the light-emitting element rows, effectively utilizing the vertical space that would otherwise be wasted. This nesting approach allows the driver circuit to be embedded without increasing the overall display area or frame width, thereby reducing layout complexity.
3Ease of operation
If the driver circuit is placed on the frame, then the connection to pixel circuits is simplified, but the screen-to-body ratio decreases
Solution Approach 1:
The driver circuit and display area are merged into a single integrated structure. The driver circuit shares the same substrate and bonding interface as the light-emitting elements, eliminating the need for separate frame connections. This merging maintains connection simplicity while maximizing the screen-to-body ratio by eliminating the frame 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.