Ring-Shaped Transistor Layout for High-Resolution Display Panels
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Solution Overview
Problem
Current display technologies face challenges in achieving high display resolution and efficient pixel alignment due to the spatial constraints and interference between thin-film transistors and light-emitting devices, particularly in micro-LED displays.
Innovation Solution
The proposed display panel design features a substrate with a ring-shaped arrangement of thin-film transistors and light-emitting units, where the thin-film transistors are arranged along a ring path and the light-emitting units have electrodes aligned with the transistors, reducing spatial occupancy and improving alignment efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If thin-film transistors are arranged in conventional layouts, then device functionality is maintained, but spatial occupancy increases and display resolution is limited
Solution Approach 1:
The thin-film transistors are arranged in a ring-shaped configuration instead of conventional linear or grid layouts. This curved arrangement reduces the bounding box area required for each pixel while maintaining all necessary transistor functions, thereby increasing pixel density and display resolution without proportionally increasing spatial occupancy
Solution Approach 2:
The patent transitions from two-dimensional planar arrangements of transistors to a ring-shaped configuration that utilizes radial space more efficiently. By organizing transistors along a circular path and aligning light-emitting electrodes radially, the design optimizes spatial utilization in a different geometric dimension, reducing overall pixel area requirements
2Manufacturing precision
If thin-film transistors and light-emitting devices are closely packed, then display resolution improves, but cross-talk between components increases
Solution Approach 1:
The ring-shaped arrangement creates distinct radial zones for different transistor components and light-emitting electrodes. This spatial segmentation ensures that each transistor's electrical signals are localized to its own radial sector, reducing electromagnetic interference and cross-talk with adjacent pixels while maintaining high pixel density
Solution Approach 2:
The circular ring structure naturally segments the pixel into discrete angular sections, with each section containing a complete transistor circuit and its corresponding light-emitting electrode. This segmentation isolates electrical pathways and reduces parasitic coupling between neighboring pixels, eliminating cross-talk while enabling higher resolution
3Manufacturing precision
If conventional alignment methods are used between transistors and light-emitting devices, then manufacturing is simpler, but alignment accuracy is insufficient for high-resolution displays
Solution Approach 1:
The ring-shaped transistor arrangement with radially aligned light-emitting electrodes creates an asymmetric geometric relationship that provides unique alignment references. This asymmetric configuration eliminates the need for complex alignment marks or additional alignment structures, as the radial geometry itself serves as the alignment guide, achieving high alignment accuracy without increasing device complexity
Data Source
AI summary
A display panel and a display device are provided in the present disclosure. The display panel includes a substrate and an array layer on the substrate, where the array layer includes a plurality of control units, one control unit includes a plurality of thin-film transistors, and the plurality of thin-film transistors in a same control unit is sequentially arranged along a ring-shaped path. The display panel further includes a plurality of light-emitting units on a side of the array layer away from the substrate. The plurality of light-emitting units and the plurality of control units are in a one-to-one correspondence. A light-emitting unit includes a plurality of light-emitting devices each having a first electrode. A plurality of first electrodes in a same light-emitting unit is sequentially arranged along an arrangement direction of the plurality of thin-film transistors in a control unit corresponding to the same light-emitting unit.