A lot of work has focused on the development of zinc oxide thin film for the active layer for thin film transistors in recent years. In present article, the active layers for zinc oxide thin film transistors were firs...
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A lot of work has focused on the development of zinc oxide thin film for the active layer for thin film transistors in recent years. In present article, the active layers for zinc oxide thin film transistors were first time prepared by r.f. Magnetron sputtering using a simply compacted 3-inch-diameter zinc oxide powder target, and the deposition parameters including O2/(Ar+O2) ratio, gas pressure and r.f. Power were carefully optimized. Thousands of zinc oxide thin film transistors with staggered-type or inverse staggered-type stack and various W/L ratios were fabricated and electrically characterized. A better result we achieved with normally-off TFT characteristics presents a saturated mobility of 25.7 cm2/Vs, a threshold voltage of 6.3 V, an on/off current ratio over 7.7×104 an off current less than 7.9×10-10 and a subthreshold slope of 1.2 V/dec. The TFT characteristics results can compete with those for the TFTs manufactured from high-temperature sintered ceramic target reported in literature thus far.
A Pt thin film catalyst was prepared by a novel green method of micro drop dispersion-oxygen plasma etching (MD-OPE) method with Pt(acac)... as starting material and silicon wafer as substrate. The catalytic activity ...
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A Pt thin film catalyst was prepared by a novel green method of micro drop dispersion-oxygen plasma etching (MD-OPE) method with Pt(acac)... as starting material and silicon wafer as substrate. The catalytic activity of the film catalyst was evaluated by methanol combustion at room temperature, and its surface properties were characterized by SEM and XPS techniques. The results indicated that Pt(acac)... can be decomposed and reduced to PtO and ... with small size by oxygen plasma, which is the reason for the improved catalytic activity of as-prepared Pt film compared with the Pt film catalysts prepared by the micro drop dispersion (MD) method. (ProQuest: ... denotes formulae/symbols omitted.)
Micro-cooler has been considered as one of the promising cooling schemes for high-powered electronic ***-pin-fin made of carbon nanotube(CNT) is a potential micro-cooler for on-chip thermal management,and its localize...
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Micro-cooler has been considered as one of the promising cooling schemes for high-powered electronic ***-pin-fin made of carbon nanotube(CNT) is a potential micro-cooler for on-chip thermal management,and its localized heat removal capability can be further improved by combining air jet impingement. In this paper,the reliability of CNT micro-pin-fin cooler
applications of platinum complexes as phosphorescent emitters in high efficiency organic light-emitting diodes （OLEDs） were shortly discussed in this paper. key recent studies on highly efficient blue, green, red an...
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applications of platinum complexes as phosphorescent emitters in high efficiency organic light-emitting diodes （OLEDs） were shortly discussed in this paper. key recent studies on highly efficient blue, green, red and white-phosphorescent OLEDs based on Pt complexes are presented in terms of efficiency and color quality.
Variable size motion estimation （ME） and disparity estimation （DE） are employed to select the best coding mode for each macroblock （MB） in the current joint multiview video model （JMVM）. This technique achieve...
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Variable size motion estimation （ME） and disparity estimation （DE） are employed to select the best coding mode for each macroblock （MB） in the current joint multiview video model （JMVM）. This technique achieves the highest possible coding efficiency, but it results in extremely large computation complexity which obstructs the multiview video coding （MVC） from practical application. This paper proposes an adaptive early termination of fast mode decision algorithm for MVC. It makes use of the coding information of the corresponding MBs in neighbor view based on inter-view correlation to early terminate the mode decision procedure. Experimental results show that the proposed fast mode decision algorithm can achieve computational 50% computation saving with no significant loss of rate distortion （RD） performance.
This paper analyzes the technical characteristic of three-dimensional display technology （3DTV） system and some core technologies yet to be solved. It points out the ways to solve these problems and presents an effe...
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This paper analyzes the technical characteristic of three-dimensional display technology （3DTV） system and some core technologies yet to be solved. It points out the ways to solve these problems and presents an effective solution for thediscomfort of watching the three-dimensional TV.
In this paper we introduce a more reliable depth estimation algorithm, which is effective in improving the depth maps. With the commercial development of three-dimensional television (3DTV), the corresponding three-di...
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As the appearance of local dimming technique, the current existing test methods are not suitable for testing the power consumption of the LCD TVs using the local dimming technique any longer. A test method appropriate...
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As the appearance of local dimming technique, the current existing test methods are not suitable for testing the power consumption of the LCD TVs using the local dimming technique any longer. A test method appropriate to LED backlight LCD TVs using the local dimming technique is proposed in this paper, and then the test software is developed. The results demonstrate that the test software developed can show the real average power consumption of the LCD using local dimming technique, and by normalization the power consumption become comparable for not only local dimming LCD TVs but global dimming LCD TVs. Using the software developed in this paper, the ratio of power saving is clear when an LCD TV using the local dimming technique compared with one without local dimming technique.
This work applied the ultrasonic bonding to package flip chip GaN-based light emitting diodes （flip chip LEDs） on Si substrates. The effects of ultrasonic bonding parameters on the reliability of flip chip GaN-based...
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This work applied the ultrasonic bonding to package flip chip GaN-based light emitting diodes （flip chip LEDs） on Si substrates. The effects of ultrasonic bonding parameters on the reliability of flip chip GaN-based LED were investigated. In the sequent aging tests, samples were driven with a constant current of 80 mA for hundreds hours at the room temperature. It was found that the electroluminescence （EL） intensity variation had a large correlation to the ultrasonic power, and then to the bonding temperature and force. A high bonding temperature and ultrasonic power and a proper bonding force improved the EL intensity significantly. It was contributed to a strong atom inter-diffusion forming a stable joint at the bonding interface, The temperature fluctuation in the aging test was the main factor to generate a high inner stress forming delamination at the interface between the chip and Au bump. As a result, delamination had retarded the photons to emit out of the LED packaging and decay its EL intensity.
We have fabricated high-efficient white organic light-emitting diodes （WOLEDs） using two types of electron transport materials with different electron mobility. The effect of the electron mobility on the device perf...
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We have fabricated high-efficient white organic light-emitting diodes （WOLEDs） using two types of electron transport materials with different electron mobility. The effect of the electron mobility on the device performance is discussed. In addition, to generate the desired white emission and high color rendering index, we perform the structure design of OLED, in which the functions of co-host of blue and green dopants on chromatic-stability are investigated. Experimental results find that the maximum color rendering index reaches as high as 91 at the voltage of 8 V.
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