Transparent Gate Driver Overlap Reduces Non-Display Area
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Solution Overview
Problem
Conventional display apparatuses have a large non-display area due to the presence of gate drivers, which increases the size and can reduce light transmittance when integrated into the display panel through thin film processes.
Innovation Solution
The display apparatus incorporates a gate driver disposed to overlap with the display area, using a transparent design with a stage part on a groove in the insulating substrate and an insulating planarization layer, reducing the non-display area without compromising light transmittance by eliminating the need for sealants and optimizing the placement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gate driver is mounted on a printed circuit board or directly formed in the non-display area, then the gate driver can be properly positioned and connected, but the non-display area increases in size
Solution Approach 1:
The gate driver is moved from the traditional planar position in the non-display area to a three-dimensional position overlapping with the display area. The insulating substrate creates a groove that allows the gate driver to be positioned in a recessed area, enabling vertical stacking rather than lateral placement. This dimensional change allows the gate driver to occupy space above the display area rather than expanding the non-display area laterally.
Solution Approach 2:
The gate driver is nested within the display area by creating a groove in the insulating substrate that recesses into the display area. The gate driver stage part is positioned within this groove, effectively nesting the gate driver structure within the overall display panel structure. This nesting approach allows the gate driver to be integrated into the display area without requiring additional non-display area.
2Ease of manufacture
If the gate driver is directly formed in the non-display area through thin film process, then integration is achieved, but the non-display area must exceed a certain size to accommodate the process
Solution Approach 1:
The manufacturing approach transitions from two-dimensional planar formation in the non-display area to three-dimensional formation overlapping the display area. The groove structure in the insulating substrate enables vertical integration, allowing the gate driver to be manufactured using thin film processes while positioned in a recessed area that overlaps with the display area when viewed from above.
3Reliability
If the gate driver is placed in the non-display area, then connection is simplified, but light transmittance is reduced due to the opaque gate driver structure
Solution Approach 1:
The gate driver structure is designed with local transparency characteristics. The gate driver electrode and surrounding insulating structures are made transparent or translucent in the regions where they overlap with the display area. This local quality change allows light to pass through the gate driver structure in the display area while maintaining electrical connection functionality, thus preserving both connection reliability and light transmittance.
Data Source
AI summary
A display apparatus includes a display panel, a gate driver, and a data driver. The display panel includes a display area in which an image is displayed and a non-display area disposed adjacent to the display area. The display panel includes an insulating substrate which has a groove. The gate driver is disposed to overlap with the display area when viewed in a plan view. At least part of the gate driver is formed on the groove.