Developed the first full-color QDED electroluminescent display based on rare-earth doped oxide TFT technology
Author: Time: 2016-12-19 Source: China LCD Network
December 2016, South China University of Technology, State Key Laboratory of luminous materials and devices Professor Peng Junbiao research team, Guangzhou New Horizon Optoelectronics Technology Co., Ltd. research and development of the quantum dot ink development and electroluminescence display screen structure design to solve the solution processing type multilayer electroluminescent device structure design, interface miscible and other scientific issues, breaking new material system oxide TFT substrate preparation techniques, surface properties control technology, a solution prepared by Method quantum dot thin film technology, thin film encapsulation technology, successfully developed the first models based on rare-earth doped oxide the TFT (Ln-the IZO the TFT full color) technology active driving electroluminescent quantum dot display (AM-QLED), to achieve a color image display.
And AMOLED device similar to the quantum dot display with AM-QLED solid-state thin-film structure, the use of electron and hole injection composite electroluminescent theory, the quantum dot thin film of active light in the electric field, the principle of different electroluminescent At present, the commercial use of quantum dots as a liquid crystal display backlight photoluminescence principle and its application in the LCD backlight. We developed the AM-QLED display in quantum dot pixel film using high-precision inkjet printing technology to prepare, rheological controllable quantum dot ink by the independent development. By controlling the surface free energy of the TFT substrate and the ink rheology such as the surface tension and viscosity of the droplet, the nano-pixel film with no coffee ring was fabricated. The inverted QLED device with self- The combination of the new Ln-IZO TFT back-panel technology and the surface property control technology independently developed by South China University of Technology and Guangzhou New Horizon Optoelectronics Technology Co., Ltd, obtained a brightness of 400 cd / m2, a resolution of 200 * (RGB) A 2-inch active-driven color quantum dot electroluminescent display with a pixel density of 120 PPI, a gamut of 109% (NTSC), and a contrast ratio of over 50,000: 1 is shown in the following figure.
Quantum Dot (Quantum Dot) is a kind of semiconducting nanocrystals with diameter of 2 ~ 10 nm. It has the characteristics of high luminous efficiency, narrow emission spectrum, high color purity, and can be controlled by the size of quantum dots. Of the wide attention. The structure of OLEDs and the compound luminescence principle of electron and hole injection can be used to produce active luminescence of quantum dots under the action of electric field. The electroluminescence of QD films can be used to prepare large color gamut, Thin, flexible and flexible electroluminescent display, in the mobile phone, TV, tablet PCs and other areas with potential applications. The fabrication of quantum dots thin film electroluminescent display using ink jet printing technology is expected to be realized at low cost.
State Key Laboratory of luminescent materials and device research interests include South China University of Technology is an organic / polymer optoelectronic materials and devices, including AMOLED display materials, devices and processes, the design and synthesis of high-performance soluble organic / polymer light-emitting material, the whole Printing (including metal cathode) color OLED display, high-performance OLED device structure design and preparation, and other aspects of the international leading level has made the research results.
Guangzhou New Vision Optoelectronics Technology Co., Ltd. is a joint venture by the South China University of Technology and Skyworth Group was established with the goal of the South China University of Technology appear in the organic / polymer light-emitting scientific and technological achievements in the field of ongoing pilot incubation and industrialization, focus on research and development of AMOLED displays the new Technology, invented the high mobility rare earth doped oxide semiconductor new material system, broke through the BCE structure oxide TFT array preparation technology and flexible OLED display film packaging technology, to achieve a full-color, transparent, flexible, high stability AMOLED display and AMOLED display research and development has made a series of independent core technology, more than 100 pieces of patent application / authorization.
This work has been the Ministry of Science and Technology 973 project (2015CB655000) support.
http://www.eepw.com.cn/article/201612/341744.htm
Author: Time: 2016-12-19 Source: China LCD Network
December 2016, South China University of Technology, State Key Laboratory of luminous materials and devices Professor Peng Junbiao research team, Guangzhou New Horizon Optoelectronics Technology Co., Ltd. research and development of the quantum dot ink development and electroluminescence display screen structure design to solve the solution processing type multilayer electroluminescent device structure design, interface miscible and other scientific issues, breaking new material system oxide TFT substrate preparation techniques, surface properties control technology, a solution prepared by Method quantum dot thin film technology, thin film encapsulation technology, successfully developed the first models based on rare-earth doped oxide the TFT (Ln-the IZO the TFT full color) technology active driving electroluminescent quantum dot display (AM-QLED), to achieve a color image display.
And AMOLED device similar to the quantum dot display with AM-QLED solid-state thin-film structure, the use of electron and hole injection composite electroluminescent theory, the quantum dot thin film of active light in the electric field, the principle of different electroluminescent At present, the commercial use of quantum dots as a liquid crystal display backlight photoluminescence principle and its application in the LCD backlight. We developed the AM-QLED display in quantum dot pixel film using high-precision inkjet printing technology to prepare, rheological controllable quantum dot ink by the independent development. By controlling the surface free energy of the TFT substrate and the ink rheology such as the surface tension and viscosity of the droplet, the nano-pixel film with no coffee ring was fabricated. The inverted QLED device with self- The combination of the new Ln-IZO TFT back-panel technology and the surface property control technology independently developed by South China University of Technology and Guangzhou New Horizon Optoelectronics Technology Co., Ltd, obtained a brightness of 400 cd / m2, a resolution of 200 * (RGB) A 2-inch active-driven color quantum dot electroluminescent display with a pixel density of 120 PPI, a gamut of 109% (NTSC), and a contrast ratio of over 50,000: 1 is shown in the following figure.
Quantum Dot (Quantum Dot) is a kind of semiconducting nanocrystals with diameter of 2 ~ 10 nm. It has the characteristics of high luminous efficiency, narrow emission spectrum, high color purity, and can be controlled by the size of quantum dots. Of the wide attention. The structure of OLEDs and the compound luminescence principle of electron and hole injection can be used to produce active luminescence of quantum dots under the action of electric field. The electroluminescence of QD films can be used to prepare large color gamut, Thin, flexible and flexible electroluminescent display, in the mobile phone, TV, tablet PCs and other areas with potential applications. The fabrication of quantum dots thin film electroluminescent display using ink jet printing technology is expected to be realized at low cost.
State Key Laboratory of luminescent materials and device research interests include South China University of Technology is an organic / polymer optoelectronic materials and devices, including AMOLED display materials, devices and processes, the design and synthesis of high-performance soluble organic / polymer light-emitting material, the whole Printing (including metal cathode) color OLED display, high-performance OLED device structure design and preparation, and other aspects of the international leading level has made the research results.
Guangzhou New Vision Optoelectronics Technology Co., Ltd. is a joint venture by the South China University of Technology and Skyworth Group was established with the goal of the South China University of Technology appear in the organic / polymer light-emitting scientific and technological achievements in the field of ongoing pilot incubation and industrialization, focus on research and development of AMOLED displays the new Technology, invented the high mobility rare earth doped oxide semiconductor new material system, broke through the BCE structure oxide TFT array preparation technology and flexible OLED display film packaging technology, to achieve a full-color, transparent, flexible, high stability AMOLED display and AMOLED display research and development has made a series of independent core technology, more than 100 pieces of patent application / authorization.
This work has been the Ministry of Science and Technology 973 project (2015CB655000) support.
http://www.eepw.com.cn/article/201612/341744.htm
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