Auxiliary Pixel Routing Around Through-Holes
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Solution Overview
Problem
Display devices face challenges in minimizing dead areas, particularly around through-holes, which can lead to reduced aesthetics and deteriorated display quality due to disconnection of data and scan lines.
Innovation Solution
The implementation of a display device with auxiliary pixels arranged in concentric circles around through-holes, driven by separate signals, and a line routing unit that bypasses the through-hole, eliminating the need for thin-film transistors and minimizing dead areas by using a substrate with defined display and non-display areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data lines and scan lines are connected directly through a through-hole in the substrate, then the display device can maintain electrical connectivity, but dead areas are created around the through-hole due to line routing constraints
Solution Approach 1:
The display area is segmented into a main display area and an auxiliary display area surrounding the through-hole. The auxiliary display area contains auxiliary pixels that are independently controlled from the main pixels, allowing the through-hole region to be functionally integrated without creating dead areas. This segmentation enables separate control of pixel groups to maintain connectivity while eliminating non-display regions.
Solution Approach 2:
The line routing unit is configured to route data lines and scan lines around the through-hole in a circumferential manner, transitioning from direct linear connection to a multi-dimensional routing path. This dimensional change allows lines to bypass the through-hole obstacle while maintaining electrical connectivity, eliminating the need for additional routing layers or complex 3D structures.
2Ease of manufacture
If the non-display area is enlarged to accommodate through-hole routing, then line routing becomes simpler, but display quality and aesthetics deteriorate
Solution Approach 1:
The auxiliary display area is merged with the main display area functionally, as both areas utilize the same pixel structure and driving mechanisms. The auxiliary pixels surrounding the through-hole are driven by the same scan lines and data lines as the main pixels, merging the functionality of the through-hole region into the overall display system rather than treating it as a separate non-display area.
Solution Approach 2:
The line routing unit follows a curved circumferential path around the through-hole rather than taking straight linear routes. This curved routing allows the lines to conform to the circular geometry of the through-hole, enabling simpler routing within the constrained space while minimizing the expansion of the non-display area.
3Area of stationary object
If auxiliary pixels are added around the through-hole to eliminate dead areas, then display quality improves, but device complexity increases
Solution Approach 1:
The auxiliary pixels surrounding the through-hole share the same structural characteristics and driving mechanisms as the main pixels. Both auxiliary and main pixels utilize identical pixel circuits, light-emitting elements, and control lines, making the auxiliary pixels a universal extension of the main display system rather than a separate complex subsystem.
Solution Approach 2:
The auxiliary pixels are driven by the same scan lines and data lines as the main pixels, allowing the existing driving circuitry to serve both functions. The auxiliary pixels leverage the existing electrical infrastructure to operate independently, eliminating the need for separate driving circuits or control mechanisms that would increase device complexity.
Data Source
AI summary
A display device includes: a substrate in which a main display area, a first non-display area inside the main display area, and an auxiliary display area between the main display area and the first non-display area are defined; and a display unit including an auxiliary display and a main display. The auxiliary display is disposed on the auxiliary display area and includes a plurality of first auxiliary pixels, a plurality of second auxiliary pixels, and a plurality of third auxiliary pixels. The main display is disposed on the main display area and includes a plurality of main pixels. The plurality of first auxiliary pixels is commonly driven by a first driving signal, the plurality of second auxiliary pixels is commonly driven by a second driving signal, and the plurality of third auxiliary pixels is commonly driven by a third driving signal.