最新刊期
      期 4 ， 2010

        Material Physics & Chemistry

      • HAN Yao-hua,ZHAO Li-feng,DING Xing-li,DU Zeng-shen,YANG Yue-hui
        Vol. 25, Issue 4, Pages: 473-476(2010)
        摘要：2,3,4-trifluoroiodobenzene is prepared with 2,3,4-trifluorophenylamine by sandmeyer reaction. 4-(2,3,4-Trifluorophenyl)-2-methylbut-3-yn-2-ol is prepared with 2,3,4-trifluoroiodo benzene and 2-methyl-3-butyn-2-ol.2,3,4-trifluorophenylacetylene is prepared with 4-(2,3,4-trifluo -rophenyl)-2-methylbut-3-yn-2-ol and potassium hydroxide in paraffin oil. Six derivatives of 2,3,4-trifluorotolanes are prepared with 2,3,4 -trifluorophenylacetylene and six derivatives of iodobenzene by Sonogashira reactions. These compounds not only have large optical anisotropy(Δn).but also have wider nematic phase temperature range by a series photo electricity test and DSC analysis.

          
        关键词：fluorinated liquid crystal;tolanes;Sonogashira cross-coupling reaction   
        16
        |
        13
        |
        3
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690588 false
        发布时间：2020-08-12
      • REN Xi-han,MENG Jin-song,XIA Zhi-guo,LI Hong-li,QIAN Xiu-li
        Vol. 25, Issue 4, Pages: 477-480(2010)
        摘要：A new class of pyrimidine liquid crystals was synthesized through a series of reaction with benzene acetophenone as the raw material, and their performances were tested. Effect of different directions of the two nitrogen atoms in the cyano-pyrimidine ring on the liquid crystals performances was researched. The results show that this kind of liquid crystals has large optical anisotropy and dielectric anisotropy.

          
        关键词：benzene acetophenone;2-cyano-5-(4'-alkyl-phenyl) pyrimidine;phase transition temperature;optical anisotropy;dielectric anisotropy   
        16
        |
        11
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690407 false
        发布时间：2020-08-12
      • ZHANG Zhuo,HE Xuan,LI Lin
        Vol. 25, Issue 4, Pages: 481-485(2010)
        摘要：A polyacrylate resin was synthesized that could be used on pigment-dispersion for color filter cooperating with dispersant. The pigment of C.I. P.R 254 was milled to well-distributed particles about 90 nm with 1.5 dpi on 15% concentration. And the dispersed-pigment solution had been much stable in low viscosity on 5 mPa·s over 6 months at room temperature. Furthermore, the resin can cooperate with many dispersants, such as DisperBYK2000, DisperBYK2001. On the other hand, it couldnt obtain the well-dispersed pigment solution using dispersant merely without the polyacrylate resin. Whats the most important is that the photo resist for color filter using this dispersed-pigment solution above showed high resolution (less than 6 μm), neat edge and flat surface.

          
        关键词：color filter;pigment;dispersion;resin   
        46
        |
        19
        |
        4
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690614 false
        发布时间：2020-08-12
      • ZHU Yu-chan,REN Zhan-dong,ZHANG Zhi-yong,ZHANG Kai-cheng,WANG Xiao-yan
        Vol. 25, Issue 4, Pages: 486-489(2010)
        摘要：The liquid crystal monomers and the mixed liquid crystal materials had been purified by strong electric field. The results show that the purification has perfect effect by this method for different liquid crystal. The resistivity enhances from 1010 Ω·cm to 1012 Ω·cm for liquid crystal contained the ester function or the cyanogen function. The resistivity enhances from 1011Ω·cm to 1013 Ω·cm for the stable structure liquid crystal contained the fluorin and benzene function.The resistivity increases evidently from 109 Ω·cm to 1012 Ω·cm, or from 1010 Ω·cm to 1013 Ω·cm for the mixed liquid crystal. In addition, the influence of electric field strength, purified time and the liquid crystal dosage on purified effect have been investigated, respectively.

          
        关键词：liquid crystal material;electric field;resistivity   
        37
        |
        11
        |
        2
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691360 false
        发布时间：2020-08-12
      • LIU Yun,ZHANG Zhi-yong,RENG Zhan-dong,DAI Zhi-qun,WEI Ben-mei,XUAN Li
        Vol. 25, Issue 4, Pages: 490-493(2010)
        摘要：Response speed of liquid crystal displays(LCD) is contrast to the rotational viscosity of liquid crystal materials. So far, the problem that low-temperature magnitude dependence of viscosity and response time was not been resolved, which has become the bottleneck of development and application of liquid crystal display technology. In this paper, the difluoromethoxymthylene-bridged alkylbenzenes compounds with two aromatic rings were used as liquid crystal components and solvents, to study their behavior of viscosity at different temperature. It was found that compositions not only were super low viscosity and very small temperature dependence, but also can be used as liquid crystal solvent and components to reduce the viscosity and the low-temperature dependence of liquid crystal materials effectively.

          
        关键词：difluorooxymethylene-bridged alkylbenzenes;liquid crystals materials;low-temperature viscosity;temperature dependence   
        22
        |
        13
        |
        3
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691491 false
        发布时间：2020-08-12
      • GAN Ning,LI Jian,LI Juan-li,DENG Deng
        Vol. 25, Issue 4, Pages: 494-497(2010)
        摘要：Liquid crystals with olefinic chain are extensively used for various kinds of LCD. Six kinds of liquid crystal mixtures were obtained by adding six olefinic liquid crystals to host mixture P0 respectively. The associated properties of Figure-of-Merit(FOM) were investigated. The results show that the series of VCCPMe is the most effective for increasing birefringence of the composition, for lowering rotation viscosity and optimizing FoM, the series of HHV is the best, and the 3HHV1 is the most benefit to FoM.

          
        关键词：liquid crystals;Figure-of-Merit;birefringence;elastic constant;rotation viscosity   
        15
        |
        11
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690392 false
        发布时间：2020-08-12
      • DENG Deng,LI Jian,GANG Ning,SHANG Xiao-bing,LUO Wei,LI Juan-li,LI Hui
        Vol. 25, Issue 4, Pages: 498-501(2010)
        摘要：Fluorinated chiral dopant with high resistivity and stability was synthesized,its phase transition temperature and HPT were investigated. The chiral dopant was added to TN-TFT mixture and the influence of dopant on electro-optical properties was studied. The results give a reference for TN-TFT liquid crystal mixture formulation.

          
        关键词：liquid crystal;chiral material;threshold voltage;saturation voltage;contrast   
        27
        |
        18
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690456 false
        发布时间：2020-08-12
      • LI Xiao-lian,ZHANG Zong-ying,WANG Bing,WANG Qian-qian,MENG Xi
        Vol. 25, Issue 4, Pages: 502-504(2010)
        摘要：A new liquid crystal intermediate containing -triazole ring was prepared with phenylacetylene and ethyl 4-azidobenzoate by click chemistry reaction. The ethyl 4-azidobenzoate was synthesized by diazotizing reaction using 4-aminobenzoic acid as raw material. The structure of the target compound was confirmed by 1H NMR and HR MS. Results demonstrated that the method of introducing -triazole ring into liquid crystals was simple and efficient.

          
        关键词：1;3-dipolar cycloaddition;-triazole;liquid crystal intermediate   
        13
        |
        9
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690367 false
        发布时间：2020-08-12
      • YU Jie,LI Zhe,REN Jiao-yan,LING Zhi-hua
        Vol. 25, Issue 4, Pages: 505-509(2010)
        摘要：With acrylic monomers and various functional complexes, the light reactive resin was prepared. This material has a molecular structure, which can improve the adhesion of metal film on the ITO with hydroxyl group, also is able to improve heat resistance of the benzene ring skeleton. Photosensitivity was tested for that the material has the characteristics of rapid solidification. Testing and comparison determined that the material has high transmittance and high heat resistance. 3H pencil hardness test results demonstrated that this material can be used as LCD gap control materials.

          
        关键词：cell gap;photoreaction-LCD gap control material;UV-curable   
        21
        |
        13
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690380 false
        发布时间：2020-08-12
      • ZHANG Fang-miao,HAN Yao-hua,SHANG Hong-yong,ZHANG Jing-mei,QIAN Xiu-li
        Vol. 25, Issue 4, Pages: 510-514(2010)
        摘要：A compound 4'-butyl -3- fluoro -biphenyl was synthesized conjugated with Suzuki from Butyl-bromobenzene and fluorobenzene boronic acid, which generated 3 - fluoro -4- iodine -4 '- butyl - biphenyl under low temperature. Then 3 - fluoro -4 - iodine -4 '- butyl- biphenyl reacted with five types of substituted benzene acetylene, generating five fluorinated biphenyl alkyne monomer liquid crystals via Sonogashira reaction. The structures and parameters of the products were determined. It was found that these compounds has higher optical anisotropy (Δn) and wider range of nematic phase.

          
        关键词：fluorinated liquid cryscal;tolane;Sonogashira cross-coupling reaction   
        20
        |
        13
        |
        3
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690421 false
        发布时间：2020-08-12
      • HU Chao-quan,WANG Xiao-yi,CHEN Hong,ZHU Jia-qi,HAN Jie-cai,ZHENG Wei-tao
        Vol. 25, Issue 4, Pages: 515-518(2010)
        摘要：Germanium carbide (Ge1-xC<em>x) films have numerous attractive properties, which make them promising candidates for applications in the field of multilayer antireflection and protection coating of IR window. Although many investigations on the Ge1-xC<em>x films prepared by different deposition techniques have been performed, it is still difficult to summarize from the literature and thus to understand the relationships between the growth process and the film properties. Effects of experimental parameters such as growth temperature on the composition and properties of Ge1-xC<em>x films deposited by reactive magnetron sputtering are not well explored.

          
        关键词：growth temperature;germanium carbide;performance   
        26
        |
        9
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691323 false
        发布时间：2020-08-12
      • ZHANG Wu-qin,GAO Jin-hai
        Vol. 25, Issue 4, Pages: 519-522(2010)
        摘要：The ceramic with a Ti mental layer was used as substrate by magnetron sputtering method. The carbide was made on the substrate by methane sputtering. The globe-like diamond microcrystalline-aggregates were fabricated by microwave plasma chemical vapor deposition (MPCVD) method. The fabricated diamond aggregates were evaluated by Raman scattering spectroscopy, scanning better electron microscopy (SEM),x-ray diffraction(XRD). The field emission properties were tested by using a diode structure in a vacuum chamber. A phosphor-coated indium tin oxide(ITO) anode was used for observing and characterizing the field emission. It was found that the globe-like diamond microcrystalline-aggregates with carbide layer exhibited better electron emission properties than the ones without carbide layer.

          
        关键词：diamond microcrystalline-aggregate;field emission;chemical vapor deposition   
        13
        |
        8
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690507 false
        发布时间：2020-08-12

        Device Technology & Physics

      • WU Wei-jing
        Vol. 25, Issue 4, Pages: 523-526(2010)
        摘要：Based on the diffusion and thermal emission processes, an analytical subthreshold current model for polysilicon thin film transistors (poly-Si TFTs) is developed by a quasi- two-dimensional solution. An analytical expression of the subthreshold swing is subsequently obtained from the surface potential equation and the subthreshold current expression, which takes into account the grain size and trap states. This model has a simple functional form and it can reduce to that of the conventional long channel MOSFET in the case of large grain size and low trap states. The model has been verified by a good agreement between simulated results and experimental data.

          
        关键词：polysilicon thin-film transistors;subthreshold;quasi-two-dimensional   
        17
        |
        15
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691527 false
        发布时间：2020-08-12
      • YOU Yu-xiang,SU Yi-jing,YE Yun,TANG Qiao-zhi,ZHANG Jie,ZHANG Yong-ai,GUO Tai-liang
        Vol. 25, Issue 4, Pages: 527-530(2010)
        摘要：The carbon nanotubes (CNT) cathodes were obtained by electrophoretic deposition (EPD) and sealed into a prototype of 25.4 cm (10 in) field emission backlight units (FE-BLU). The electrophoresis suspension with CNT was fabricated by a series of processes which included acid-treating, ballmilling and ultrasonic dispersing, and so on. The morpho-logy of CNT cathode sample was observed by scanning electron mircroscope (SEM). The field emission properties of FE-BLU were characterized in vacuum, which can be applied to LCD. Results showed that CNT FE-BLU demonstrated a good performance of luminance brightness 6 500 cd/m2 with electric field of 1.76 V/μm, and the brightness uniformity was up to 89%.

          
        关键词：carbon nanotubes;backlight units;electrophoretic deposition;field emission   
        22
        |
        16
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691340 false
        发布时间：2020-08-12
      • KASHIMA Miki,ZHAO Xiu-ting,CAO Hui,YANG Huai
        Vol. 25, Issue 4, Pages: 531-533(2010)
        摘要：The morphology of polymer dispersed liquid crystal (PDLC) has a major impact on its electro-optic properties. The PDLC was prepared by photochemical polymerization from UV-curable monomers/crosslinking agent/initiator/LC mixture. The influences of the chain length of crosslinking agents on the PDLC system have been studied. The microstructures of the PDLC were strongly influenced by the insertion of polyethylene glycol (1000) diacrylate (PEGDA 1000) crosslinker, relatively long and flexible branch, and 1,4-butanedioldiacrylate (BDDA) crosslinker along the network bone. The chain length of crosslinking agents have a significant effect on the LC domain size, and then influences the electro-optic properties of PDLC.

          
        关键词：PDLC;crosslinking agent;polymer network;transmittance   
        33
        |
        13
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690561 false
        发布时间：2020-08-12
      • WU Min-xia,LI Qing,KUANG Wen-jian
        Vol. 25, Issue 4, Pages: 534-537(2010)
        摘要：The influence of spraying CEL on the surface of MgO film of Shadow Mask PDP (SMPDP) is studied. By comparing spraying CEL on the front and rear glass to only spraying on the front glass, it can reach conclusions on the changes of luminance, response time and luminous efficacy. Spraying CEL can improve the characteristics of SMPDP, and the effect of spraying CEL on the both front and rear panel become more pronounced.

          
        关键词：SMPDP;CEL;MgO;luminance;luminous efficacy   
        16
        |
        8
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691474 false
        发布时间：2020-08-12
      • HE Zheng-hong,YE Zhi-cheng,SU Yi-kai
        Vol. 25, Issue 4, Pages: 538-541(2010)
        摘要：The reflection chromaticity of cholesteric liquid crystals (CLCs) sandwiched periodic isotropic layers (PILs) was calculated, and the potential application of this structure as reflective color filters was discussed.First, the reflection spectra was calculated by Jones matrix method, and then the CIE-1931 chromaticity diagrams for CLC sandwiched with and without PILs were drawn. It is found that the reflection chromaticity can be insensitive to the incident angle with proper thickness ratio of CLC to PILs.This structure can be used as color filters.

          
        关键词：filter;chromaticity diagram;cholesteric liquid crystal;Jones matrix   
        36
        |
        16
        |
        5
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691375 false
        发布时间：2020-08-12
      • YAO Jian-ke,XU Ning-sheng,DENG Shao-zhi,CHEN Jun,SHE Jun-cong,WANG Bin
        Vol. 25, Issue 4, Pages: 542-545(2010)
        摘要：Bottom gate structure a-Si ∶ H TFT array was deposited by standard PECVD process at 300 ℃ on Kapton E plastic substrate with thickness of 50 μm. The structure of a-Si ∶ H film was characterized by IR spectrum. The electrical conductivity of a-Si ∶ H film and n+ a-Si ∶ H film is measured by two probes and four probes method, respectively. The H atom is of 15.6% content in a-Si ∶ H film and mainly appeared in SiH and SiH2 group. The electrical conductivity of a-Si ∶ H film is 8.2×10-7~8.8×10-6 S/cm, and that of n+ a-Si ∶ H film is 3.8×10-3 S/cm. The TFTs have a threshold voltage of ~5 V, sub threshold slope of ~2.5 V/dec, linear mobility of ~0.113 cm2/(V·s) and on/off current ratio of ~105. The results show that the a-Si ∶ H TFTs on plastic substrate fabricated in this process can be used in TFT-LCD and some other switch addressable circuits of flat panel display.

          
        关键词：plastic substrate;a-Si ∶ H TFT;flexible display   
        20
        |
        18
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690433 false
        发布时间：2020-08-12
      • SU Zan-jia,LIU Fei,LI Li,MO Fu-yao,JIN Shun-yu,CHEN Jun,DENG Shao-zhi,XU Ning-sheng
        Vol. 25, Issue 4, Pages: 546-550(2010)
        摘要：This paper reports a catalyst-free method to prepare ultra-long aluminum nitride nanowires in large-area by direct nitridation of Al powder. The as-prepared AlN nanowires have a mean length of over 20 μm and a diameter ranging between 30 nm and 125 nm. The AlN nanowires are all single crystalline hexagonal wurtzite structures and grow along [001] direction. Field emission measurements show that the turn-on field and threshold field of AlN ultra-long nanowires is respectively 6.3 V/μm and 12.2 V/μm, and their maximum current density can reach 1 440 μA/cm2, which suggests it is a kind of promising cold cathode material candidate in field emission display (FED).

          
        关键词：AlN ultra-long nanowires;catalyst-free;field emission   
        14
        |
        8
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691391 false
        发布时间：2020-08-12
      • SUN Yang,ZHANG Yong-dong,ZHU Yan-lin
        Vol. 25, Issue 4, Pages: 551-553(2010)
        摘要：A solution of Capacitive Touch Panel which uses single-layer ITO glass is presented in this paper, it can achieve single/multi touch function. Furthermore the impacts of different pattern design of ITO glass on CTP function are also presented. The paper analyzes the reasons, and gives the improved methods.

          
        关键词：ITO;capacitive touch panel;pattern design   
        33
        |
        40
        |
        7
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690446 false
        发布时间：2020-08-12
      • WANG Li-ping,XU Ri,HUANG Shun-gang,MA Zheng
        Vol. 25, Issue 4, Pages: 554-557(2010)
        摘要：Polymer-dispersed liquid crystal (PDLC) films were prepared by using β-hydroxyethyl acrylate and SLC 7011-100 as starting monomer and liquid crystal (LC), respectively, via polymerization-induced phase separation. To decrease driving voltage while keeping a high contrast ratio and obtain a PDLC film with good electro-optical properties, various ratios of monomer and LC were tested. Investigation of the relationship between LC and electro-optical properties suggests that the content and molecular length of the LC added have large effect on the parameters of electro-optical properties such as reflective index and contrast ratio.

          
        关键词：PDLC;electro-optical property;reflective index;clearing point   
        35
        |
        13
        |
        2
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690600 false
        发布时间：2020-08-12
      • LI Gui-feng,FENG Jia-han,ZHOU Jun,ZHANG Qun
        Vol. 25, Issue 4, Pages: 558-560(2010)
        摘要：Amorphous indium zinc oxide thin films were prepared by direct current magnetron sputtering on glass substrates at room temperature. The organic dielectric layer poly(4-vinylphenol) were prepared by spin coating method. With IZO films as channel layers, poly(4-vinylphenol) as dielectric layers, thin film transistors were fabricated at room temperature, showing depleted mode operation with good saturation characteristics, threshold vol-tage of 3.8 V, mobility of 25.4 cm2·V-1·s-1 and on/off ratio of 106. This shows organic dielectric layer indium zinc oxide thin film transistor can be prepared at low temperature.

          
        关键词：thin film transistor;dielectric layer;indium zinc oxide   
        26
        |
        14
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691411 false
        发布时间：2020-08-12
      • OUYANG Shi-hong,LU Jian-gang,CUI Hong-qing,SU Yi-kai
        Vol. 25, Issue 4, Pages: 561-564(2010)
        摘要：In order to improve the performance of 3D display, a dynamic single-pixel LC lens method was proposed for the auto-stereoscopic display. According to the optical theory of 3D display, the influence of pixels divergence angle and LC refraction index on 3D performance was analyzed, through the modeling and simulation of LC lens. The simulation results show that the pixels divergence angle has a great influence on the performance. Finally, a simulation result of 3D display with high resolution and low crosstalk was realized through parameter optimization.

          
        关键词：three dimensional display;single-pixel LC lens;high resolution;low crosstalk   
        26
        |
        20
        |
        2
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691574 false
        发布时间：2020-08-12
      • XU Xiao-li,LIU Ru,GUO Xiao-jun,SU Yi-kai
        Vol. 25, Issue 4, Pages: 565-568(2010)
        摘要：Active matrix organic light emitting diode (AMOLED) pixel circuits can be designed based on amorphous silicon, amorphous In-Ga-Zn-O and polycrystalline silicon thin film transistors. In this work, simulations and analysis have been conducted for typical vol-tage and current driving AMOLED pixel circuits in the three different TFT technologies. The analysis and comparison results provide important guidelines for selecting proper TFT technologies to design large-size and high-resolution AMOLEDs.

          
        关键词：AMOLED;amorphous silicon;amorphous In-Ga-Zn-O;poly silicon;thin film transistor   
        51
        |
        38
        |
        3
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691536 false
        发布时间：2020-08-12
      • YAO Qi-jun,LI Shu-xin,ZHANG Qun
        Vol. 25, Issue 4, Pages: 569-571(2010)
        摘要：Thin film transistors based on In-Zn-Ti-O oxide channel layer were fabricated at room temperature. The atomic proportion of In, Zn and Ti in channel layer is 49 ∶ 49 ∶ 2. The device with field effect mobility of 9.8 m2/V·s, on-off ratio higher than 105 and subthres-hold swing of 0.61/dec was obtained. While compared with devices without Ti doping, it is found that Ti-doping increases the threshold voltage in the positive direction and improves the field effect mobility of the devices.

          
        关键词：thin film transistor;zinc oxide;indium oxide;titanium oxide   
        37
        |
        18
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690549 false
        发布时间：2020-08-12
      • BAI Shi,WANG Yan-feng,HUANG Min,LENG Chang-lin,JIA Yong,JIN Chun-mei
        Vol. 25, Issue 4, Pages: 572-575(2010)
        摘要：Touch Screen Panel(TSP) is widely used for mobile devices as a most intuitive and user-friendly input device, various kinds of TSP technology are studied in the past few years. This paper reviews the features of conventional (external) technology and internal touch technology, the technology trend of TSP is also discussed.

          
          
        46
        |
        38
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690578 false
        发布时间：2020-08-12
      • LI Wen-bo,XU Zheng,ZHANG Zhuo,WANG Gang,SHAO Xi-bin,LIU Hong-yu,LI Yun-fei
        Vol. 25, Issue 4, Pages: 576-581(2010)
        摘要：This paper focused on the comparative analysis of microencapsulated electrophoretic display and TFT-LCD display. The different features such as the display principle, the circuit driving mode and gray-scale implementation,pixel design and display performance were investigated and analyzed in detail. Then, the recent development and prospects of current electronic paper based on electrophoresis display for its potential application are briefly introduced and predicted.

          
        关键词：microencapsulated electrophoretic display;TFT-LCD display;comparative analysis   
        55
        |
        34
        |
        5
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691550 false
        发布时间：2020-08-12
      • CHEN Liu,YU Hong-kun,ZENG Wei,PENG Ya-fang
        Vol. 25, Issue 4, Pages: 582-584(2010)
        摘要：The structure of OLED was studied by N&K analyzer and the reflectance spectrum of samples in different time duration were compared. The layers thickness information in this OLED, with a structure of ITO/NPB/Alq3/LiF/Al, can be obtained by calculating and datum fitting. By comparing the structure of different samples, it is found that the main reason of device failure lies in Alq3 and LiF layer. This also indicates that N&K analysis is an effective method for OLED failure research.

          
        关键词：organic lighting-emitting device;N&K analyzer;failure analysis   
        17
        |
        13
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691425 false
        发布时间：2020-08-12
      • SU Yi-jing,YOU Yu-xiang,HU Li-qin,TANG Qiao-zhi,ZHANG Jie,ZHANG Yong-ai,GUO Tai-liang
        Vol. 25, Issue 4, Pages: 585-587(2010)
        摘要：CNT-Ni linear cathode is fabricated by electrophoretic deposition method, and its field emission properties are measured in the cylinder glass tube. There is a homogeneous layer of CNT reticulation on the surface of linear cathode. The field emission measurement shows that the linear cathode possesses good properties, such as low turn-on electric field of 0.82 V/μm, the current of 2.3 mA at the voltage 3 400 V, high luminance brightness of 7 500 cd/m2, and at the voltage 4 000 V, the emission current of CNT-Ni linear cathode without significant degradation after 10 h.

          
        关键词：carbon nanotubes;linear cathode;field emission fluorescence lamp   
        16
        |
        9
        |
        2
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691508 false
        发布时间：2020-08-12
      • TIAN Yuan,ZHANG Ya-xing,SUN Yu-bao
        Vol. 25, Issue 4, Pages: 588-592(2010)
        摘要：The voltage grading of polyimide or color filter is not ignored in the normal liquid crystal displays or liquid crystal on silicon mode. This paper derived the voltage grading equation for the liquid crystal layer and equivalent dielectric constant of liquid crystal layer using the capacitance model. The effects of thickness of polyimide and liquid crystal layer on the voltage grading of liquid crystal layer were numerical simulated. The results should show a significant help on designing the configuration of liquid crystal display.

          
        关键词：polyimide;liquid crystal displays;voltage grading   
        45
        |
        44
        |
        3
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691437 false
        发布时间：2020-08-12

        Imaging Technology & Image Processing

      • CHENG Ming-ming,WANG He,AN Ping,ZHANG Yang,ZHANG Zhao-yang
        Vol. 25, Issue 4, Pages: 593-597(2010)
        摘要：The rectification of multi-view images is one of key techniques to improve the quality of 3DTV viewing. Most of the existing image rectification algorithms are for stereo or triple images, but fewer for images captured by parallel or arc multi-camera arrays, and subject to camera calibration parameters and camera spacing greatly.This paper presents an uncalibrated rectification algorithm for multi-view images captured by a multi-camera array. Without camera calibration, the rectification transformation matrix was calculated by searching for matched feature points and using the relationship of vertical parallax, and by which to rectify the original image. Experimental results show that the vertical mismatch between rectified images is greatly reduced, and the rectified images can provide good stereo vision of the subjective test.

          
        关键词：3DTV;image rectification;un-calibrated image;feature points matching   
        17
        |
        9
        |
        9
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690474 false
        发布时间：2020-08-12
      • ZHANG Qian,WU Yan-fei,AN Ping,ZHANG Zhao-yang
        Vol. 25, Issue 4, Pages: 598-600(2010)
        摘要：A new object segmentation method was presented in this paper. Firstly, a disparity estimation method was presented, which get a fast estimation result. Then, the segmentation is obtained by Morphological filtering. The experimental results verify the validity and reliability of this method.

          
        关键词：muli-view video;segmentation;disparity   
        13
        |
        8
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1691449 false
        发布时间：2020-08-12
      • LI Shuai,LI Hai-feng,PENG Yi-fan,LIU Xu
        Vol. 25, Issue 4, Pages: 601-604(2010)
        摘要：A novel 3D display approach and system based on spliced view-field is proposed, which consists of an array of mini-projectors and a vertical diffuser. A prototype apparatus is made to demonstrate this method using a 58.4 cm(23 in) LCD and 49 Fresnel lenses of focal length 100 mm, which can display a 3D image with 49 horizontal viewpoints and a small angle pitch of 0.51°. The performance of this system is improved by optimize the image producing algorithm.

          
        关键词：3D display;autostereoscopic display;spliced view-field;viewpoint   
        30
        |
        14
        |
        5
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 1690518 false
        发布时间：2020-08-12
      0