Display Substrate PPI Transition Region for Row Driving
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Solution Overview
Problem
Existing display technologies face challenges in integrating a row driving circuit, such as a gate driving circuit, into the four corner regions of a display substrate with a four curved surface screen design due to the presence of opening patterns, which limits the pixel per inch (PPI) and affects the display quality and frame width.
Innovation Solution
A display substrate design that includes a transition region between high and low PPI regions, with a row driving circuit placed within the transition region to drive pixels in both areas, allowing for a reduced frame width and enabling the four curved surface screen design without additional space for the circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a row driving circuit is integrated into the four corner regions of a display substrate with four curved surface screen design, then the frame width is reduced and display quality is improved, but the presence of opening patterns in the corner regions limits the pixel per inch (PPI) and causes display defects
Solution Approach 1:
The display substrate is divided into three distinct regions: a first display region with high PPI, a second display region with low PPI, and a transition region between them. The row driving circuit is specifically integrated into the transition region, which has intermediate PPI characteristics. This segmentation allows the circuit to be placed in a region that does not compromise the high PPI display quality of the main display area while still achieving frame width reduction and eliminating display defects.
2Length of moving object
If the frame width is reduced by integrating the row driving circuit within the display region, then the portability and size are improved, but the circuit placement becomes more constrained
Solution Approach 1:
The transition region is designed with specific local characteristics - it has intermediate PPI between the high PPI first display region and the low PPI second display region. This local quality difference creates an optimal environment for integrating the row driving circuit, as the intermediate PPI allows sufficient space for circuit components while maintaining overall display quality. The circuit placement is facilitated by the unique structural characteristics of the transition region, which differ from both the high PPI and low PPI regions.
3Adaptability or versatility
If opening patterns are present in the corner regions to enable four curved surface screen design, then the stereoscopic display effect is improved, but the pixel per inch (PPI) is limited and display defects occur
Solution Approach 1:
The row driving circuit is extracted from the traditional corner region placement and relocated to the transition region. This extraction resolves the conflict between the opening patterns needed for four curved surface design and the PPI requirements for display quality. By taking the circuit out of the corner regions with opening patterns and placing it in the transition region with intermediate PPI, the solution maintains the stereoscopic display effect while avoiding PPI limitations and display defects in the high PPI display regions.
Data Source
AI summary
A display substrate and a display device are disclosed. The display substrate includes: a transition region, located between a first display region and a second display region, the first display region, the second display region and the transition region are provided with a plurality of pixels, the plurality of pixels are arranged in an array in the first direction and a second direction intersecting with the first direction, a pixel per inch (PPI) of the first display region is greater than a PPI of the second display region and a PPI of the transition region, the transition region is further provided with a row driving circuit, the row driving circuit is configured to drive the plurality of pixels in the first display region, the second display region and the transition region by rows.