Thermal Transfer Pixel Patterning by Using an Infrared Lamp Source for Organic LED Display

Bae, Hyeong Woo; Jang, Youngchan; An, Myungchan; Park, Gyeongtae; Lee, Donggu

doi:10.5369/jsst.2019.29.1.27

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…The chip will not automatically rewrite during the reading process. Check the power data management module chip internal any register simply controls the read data [12][13].…”

Section: Figure 1 Non-volatile Ferroelectric Read-write Memory Chip C...mentioning

confidence: 99%

Outdoor Full-color LED Display for Sports Games Based on Non-volatile Ferroelectric Read-write Memory Chip

2022

IJST

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With the continuous update of industry technology, LED LCD displays are developing rapidly in the direction of high-brightness and full-color development. All-round color LED LCD displays are better and better showing their broad industry applications. The article is based on a non-volatile ferroelectric read-write memory chip designed for outdoor sports competitions full-color LED display. First, the detailed design introduces the actual design and application of the non-volatile power data management memory in the design of the power management data network management control software chip system and the principle of the control software, and analyzes in detail how to realize the specific design functions according to the specific design specifications of the software system. , And then a new power management control system management software system that can scroll the full-color node LED horizontally on the display screen, adopts the power network management ARM Cortex-M3 core and uses the power supply microprocessor and network STM32 as the power supply The management control software system center, with the power network management FPGA as the central system, completes the high-speed horizontal scrolling of the entire scrolling display screen and the scrolling refresh of the display screen, and completes the system control software principle and design layout of the power management layer and the network PCB power supply Control and manage the software processing design of the layout, the hardware processing design of the circuit board and the software installation and debugging. The LED display screen can meet the functional requirements of outdoor sports games, and the display rate of the image of the LED full-color display screen has reached 91.82% on average, which has good stability.

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“…The chip will not automatically rewrite during the reading process. Check the power data management module chip internal any register simply controls the read data [12][13].…”

Section: Figure 1 Non-volatile Ferroelectric Read-write Memory Chip C...mentioning

confidence: 99%

Outdoor Full-color LED Display for Sports Games Based on Non-volatile Ferroelectric Read-write Memory Chip

2022

IJST

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Design of New Over-Temperature Protection Light-Emitting Diode Driver Circuit and Improvement Method of Visual Design

Wang

Kuang

Qian

2021

Journal of Nanoelectronics and Optoelectronics

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The overall design of light-emitting diode (LED) display control system was completed at first. For the problems of LED driver chip such as low accuracy of constant current output, high power consumption, poor stability, and single over-temperature protection function, the double temperature hysteresis and over-temperature buffer protection function of circuit were designed. The low-power constant-current module of LED driver module included an operational amplifier, a MOS tube with negative feedback control, and the driving current required to achieve high-precision reference current conversion. The temperature control points were set in hysteretic and overtemperature buffer modules for the working temperature, and power MOS tube was turned off in time to reduce the driving current to a constant driving current, thus reducing the power consumption of circuit. In addition, to improve the image quality of LED display, a visual refresh logic circuit was designed. The display cycle was divided into 32 segments by logic circuit, with 128 gray clock cycles in each segment, and duty ratio was controlled by 12 bits of gray data. In test, the multi-value output bandgap reference voltage was simulated at first. In range of –30 °C–130 °C, the fluctuation of voltage in this temperature range met the requirements of circuit. During simulation of buffer circuit of the LED driver module, it was found that output terminal can perform good voltage following, so as to meet the needs of circuit. The design of visual refresh logic circuit can greatly improve the refresh rate of pulse width modulation (PWM).

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Thermal Transfer Pixel Patterning by Using an Infrared Lamp Source for Organic LED Display

Cited by 2 publications

References 17 publications

Outdoor Full-color LED Display for Sports Games Based on Non-volatile Ferroelectric Read-write Memory Chip

Outdoor Full-color LED Display for Sports Games Based on Non-volatile Ferroelectric Read-write Memory Chip

Design of New Over-Temperature Protection Light-Emitting Diode Driver Circuit and Improvement Method of Visual Design

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