25.3: Current Driving Active Matrix Micro‐LED Display

Zhang, Ke; Liu, Zhaojun; Kwok, Hoi‐Sing

doi:10.1002/sdtp.12700

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…In addition to the typical 2T1C driving circuits [122,127], there are 3T1C, 4T2C, 6T1C and other driving circuits that can drive Micro-LED chips [102,124,128]. Liu et al, used a CMOS backplane to drive a monolithic integrated full-color Micro-LED chip array with QDs-PR for color conversion.…”

Section: Pixel Driving Circuitmentioning

confidence: 99%

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Research Progress of Micro-LED Display Technology

et al. 2023

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Micro-LED display technology is considered to be the next generation of display technology, which has the characteristics of high miniaturization, thin film and integration, as well as the advantages of high brightness, high contrast, fast response speed and long service life. However, in the development of Micro-LED display technology, there are still some technical and cost problems to be solved. This paper focuses on the key technologies involved in Micro-LED display technology, such as chip technology, mass transfer, full-color display, bonding and driving technology, the research history and frontier progress of these technologies are reviewed in detail. For chip epitaxy technology, the wavelength uniformity, current density and defect control are emphasized; for chip process, the two main chip structures and the challenges brought by miniaturization are discussed emphatically; for chip integration, full-color display, backplane bonding and driving, several mainstream technical schemes are summarized in turn. Finally, the chip detection and repair technologies and commercial application are introduced.

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Section: Pixel Driving Circuitmentioning

confidence: 99%

“…This configuration belongs to current drive, the uniformity and display quality of Micro-LED display are better, and better gray scale can be achieved. In addition, two capacitors can adjust the V th of T3 and T4 more precisely [128].…”

Section: Pixel Driving Circuitmentioning

confidence: 99%

Research Progress of Micro-LED Display Technology

et al. 2023

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“…Micro-LED is a current-driven light emitting device, and it has obvious advantages to use active location drive. The feature of active-matrix drive is that each Micro-LED pixel has an independent driving circuit, and the driving current is provided by the driving transistor [3]. There are many ways of active-matrix drive, among which the most common is the dual transistor single capacitor (2T1C) circuit [4].…”

Section: Fig2 Dram Pixel Driver Circuit Structurementioning

confidence: 99%

P‐10.5: Design and Comparison of DRAM and SRAM Micro‐LED Pixel Driver Circuits

Zhang

Liu

2023

Symp Digest of Tech Papers

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With the human stepping into the information society and the rapid increase of information, various display facilities and display devices are getting unprecedented development. In the display industry, Micro-LED has become the focus of development because it has the advantages of both traditional LED and small size, and can achieve extremely high PPI. However, it is precisely because of its small size, in order to drive Micro-LED display, it is particularly important to design a separate driver circuit that meets its characteristics. In this paper, different structures of pixel drivers in Micro-LED display driver circuits are studied. By comparing DRAM and SRAM structures, the performance of pixel driver under different frequency conditions is analyzed. This paper introduces and analyzes the circuit structure and design flow of various pixel drivers. Simulation is carried out by Cadence software, and its actual performance is verified by taping out.

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