• 제목/요약/키워드: color center

검색결과 2,319건 처리시간 0.031초

Advanced-MVA(A-MVA) Mode for High Quality LC Displays

  • Huang, Yi-Pai;Huang, Wei-Kai;Tsao, Cheng-Han;Su, Jeng-Jia;Hou, Hong-Lung;Liao, Pei-Chun;Chiu, Chung-Yi;Lee, Chia-Yu
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.387-390
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    • 2007
  • Advanced-MVA(A-MVA) for LCD-TV application was proposed to yield high performance LCD-TV. By utilizing Additional Refresh Technology(ART), which has 2-TFTs but with single source and gate line only. The A-MVA can yield low color washout, fast response, and optimized brightness. AMVA has become the promising solution of advanced LCDTV panels for mass-production.

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Eu3+/Tb3+Co-Doped Cerium Oxide Transparent Nanocomposite for Color-Tunable Emission

  • Li, Xiaoyan;Yu, Yunlong;Guan, Xiangfeng;Luo, Peihui;Jiang, Linqin;Zheng, Zhiqiang;Chen, Dagui
    • Nano
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    • 제13권10호
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    • pp.1850119.1-1850119.6
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    • 2018
  • $Eu^{3+}/Tb^{3+}$ co-doped nanocomposite containing $CeO_2$ nanocrystals was successfully prepared by an in situ sol-gel polymerization approach. High-resolution transmission electron microscopy demonstrated the homogeneous precipitation of $CeO_2$ nanocrystals among the polymethylmethacrylate (PMMA) matrix. The thermal stability and UV-shielding capability of the obtained nanocomposite were improved with increase of $CeO_2$ content. The tuning of the emissive color from green and yellow to red can be easily achieved by varying the dopant species and concentration. These results suggested that the obtained nanocomposite could be potentially applicable in transparent solid-state luminescent devices.

Novel structure for a full-color AMOLED using a blue common layer (BCL)

  • Kim, Mu-Hyun;Chin, Byung-Doo;Suh, Min-Chul;Yang, Nam-Chul;Song, Myung-Won;Lee, Jae-Ho;Kang, Tae-Min;Lee, Seong-Taek;Kim, Hye-Dong;Park, Kang-Sung;Oh, Jun-Sik;Chung, Ho-Kyoon
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.I
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    • pp.797-798
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    • 2005
  • We report a novel structure for a full-color AMOLED (Active Matrix Organic Light Emitting Diode) eliminating the patterning process of a blue emitting layer. The patterning of the three primary colors, RGB, is a key technology in the OLED fabrication process. Conventional full color AMOLED containing RGB layers includes the three opportunities of the defects to make an accurate position and fine resolution using various technologies such as fine metal mask, ink-jet printing and laser-induced transfer system. We can skip the blue patterning step by simply stacking the blue layer as a common layer to the whole active area after pixelizing two primary colors, RG, in the conventional small molecular OLED structure. The red and green pixel showed equivalent performances without any contribution of the blue emission.

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Photographic Color Reproduction Based on Color Variation Characteristics of Digital Camera

  • Kim, Ui-Seong;Lee, Jong-Min;Kim, Yong-Min;Park, Ki-Tae;Moon, Young-Shik
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제5권11호
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    • pp.2160-2174
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    • 2011
  • In this paper, a new technique for color reproduction based on color variation characteristics of digital camera under a dim light condition is proposed. Generally, photographers should adjust a camera exposure properly for obtaining an image with real color tone of subjects. Thus, in case of taking a picture under a dim light condition, the exposure time of a camera has to be relatively longer than the one under a bright light condition. Although images with real color tone of the subject are obtained, the images may get blurred due to the shaky hands of photographer holding the camera. In order to avoid the blur effect, an input image is captured from a camera set as a short exposure time under a dim light condition. Then we propose a method to reproduce color tone of the dim input image. To this end, color variation characteristics which represent color variations of a digital camera are first extracted by analyzing the Macbeth color checker images taken under various exposure values. Then, a color reproduction is performed by an estimation based on the color variation characteristics. Experimental results have shown that the proposed method has achieved better performance of color reproduction, compared with existing methods.

Dyeing and Color Fastness Properties of Natural Dyed Actual Size Hanji

  • ROH, JeongKwan;JO, Hyun-Jin
    • Journal of the Korean Wood Science and Technology
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    • 제50권1호
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    • pp.31-45
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    • 2022
  • After manufacturing the natural dyed actual size Hanji using 11 kinds of plant natural dyeing materials and 2 kinds of animal natural dyeing materials, the color characteristics and color change and color fastness after post-mordanting were compared and discussed. The hues of 13 types of natural dyed Hanji were black, PB, and RP, each with 1 type, YP with 3 types, and Y with 7 types. Among the natural dyeing materials, Chinese ink, indigo and Lac showed high color yield and color difference, and violet-root cromwell and gardenia seeds showed low color yield. The color fastness of Hanji dyed with turpentine diluted Ottchil, Pagoda tree seeds, Chinese ink and indigo was excellent, while that of gardenia seeds and violet-root cromwell were very poor. After post-mordanting of natural dyed Hanji with Al, Cu, and Fe mordants, the hue changes were show up the Alnus firma, clove, lac and cochineal. In addition, the color difference was very diverse and was overall the most biggest due to Fe mordant. After 72 hr. of UV irradiation on post-mordanting natural dyed Hanji, hue change was observed in 3 types and color fastness was improved in 8 types by post-mordanting. The Hue and color fastness are significantly different depending on the type of natural dying materials and post-mordants. Therefore, when dyeing Hanji with natural dyes, it is necessary to dye with sufficient knowledges and informations about the desired color and fastness.

A Study on Expression of Space Emotion by Finishing Materials - According to Evaluation of Emotional Vocabulary and Factor Analysis - (마감재를 통한 공간감성 표현에 관한 연구 - 감성어휘 평가와 요인분석을 통해 -)

  • Seo, Ji-Eun;Park, Eui-Jeong
    • Korean Institute of Interior Design Journal
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    • 제21권1호
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    • pp.177-185
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    • 2012
  • The purpose of this study is to use as the basic data for design method in commercial space. So, we analyzed whether any emotion was induced by finishing materials in the commercial space. And we was to suggest expression methods of finish materials to induce in the emotional space. The results of this study are as follows : First, we could know that the emotional design is needed to enhance satisfaction of consumers. The role of finishing material is very important in emotional expression in the commercial space. Second, we extracted the adjectives vocabulary(14 pairs) to evaluate the space emotion. we could educe the four kinds of space emotion by Factor Analysis. In addition, we could arrange the emotional words to represent each space type(Decoration : 5 pairs, Expand : 4 pairs, Limitation : 3 pairs, Hierarchy : 2 pairs). Third, to use finishing materials and wall is very effective to induce the emotion in the emotional space. To use the color is good among the elements of finishing materials. Fourth, We could find that the center of the types of emotional space was induced with the boundary and the decoration. If we use contrasting colors and accent colors in the commercial space, we can induce the center and the boundary together. And if we use colorful or unusual patterns, we can induce the center and the decoration together. Fifth, To induce the expand, we should finish with one color in space. And To induce the center, we should finish with one type of the color or pattern and then we should partially use the contrast color and special pattern. the case of boundary, it is good method to part emphasize by color, texture and materials. And we can induce the decoration with materials and patterns.

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Effect of By-product (NH4Cl) on the Improvement of the Red Color Tone of Tantalum Nitride (Ta3N5) (탄탈륨 질화물(Ta3N5)의 적색도 향상에 미치는 NH4Cl의 영향)

  • Park, Eun-Young;Pee, Jae-Hwan;Kim, Yoo-Jin;Cho, Woo-Seok
    • Journal of the Korean Ceramic Society
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    • 제46권6호
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    • pp.583-586
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    • 2009
  • The Tantalum nitride has attracted wide at attention as issues related to the toxicity of Cd-related materials. But in the titration process of Ta$Cl_5$ solution with $NH_4$OH, $NH_4$Cl, as a by product, was remained in the prepared Tantalum precursor. The tantalum precursor with $NH_4$Cl was nitrided by ammonolysis. The red color tone of $Ta_3N_5$ was reduced by the residual $NH_4$Cl reduce. Therefore, amorphous Tantalum precursor was prepared by filtering process with as hydrous ethanol to remove the $NH_4$Cl. In the case of using Tantalum precursor without $NH_4$Cl, we successfully synthesized the Tantalum nitride with good red color. The value of red color tone was improved from $a^*$=36.8 to $a^*$=53.0. The synthesized powder was characterized by XRD, SEM, the Nitrogen / Oxygen Determinator, TG-DTA, and the CIE $L^*a^*b^*$ colorimeter.

A Literature study on the Sasang Constitutional Tongue Diagnosis based on Experience Prescriptions(經驗方) in the Donguisusebowon (Longevity and Life Preservation in Oriental Medicine) (동의수세보원(東醫壽世保元) 경험방(經驗方)에 근거한 사상체질별 설진(舌診)의 문헌연구)

  • Lee, Jae-Chul;Kim, Jong-Yeol;Ryu, Hyun-Hee;Kim, Keun-Ho
    • Journal of Sasang Constitutional Medicine
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    • 제22권1호
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    • pp.1-8
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    • 2010
  • 1. Objectives: This study was performed to research the relationship between Sasang Constitution and characteristics of tongue diagnosis based on Donguisusebowon's Experience prescriptions(經驗方). 2. Methods: We searched tongue diagnosis factors in Donguisusebowon and classified this. Based on Donguisusebowon's Experience prescriptions(經驗方), we find tongue diagnosis factors in 6 contemporary Oriental medicine prescription books. 3. Results: Most So-eumin has white thin tongue coating and clear redish tongue color. Yellow tongue coatings are found in symptoms for Yinjinho-tang(Yinchenhao-tang), Soseungki-tang(Xiaochengqi-tang), Daeseungki-tang(Dachengqi-tang). Shortened Tongue is found in So-eumin's experience prescription and So-yangin's treat histroy. It didn't shown that So-eumin's Semen Crotonis included 6 prescritions' factors of tongue diagnosis. So-yangin's white tongue coating is found in Hyungbangpaedok-san(Jingfangbaidu-san), Sipjo-tang(Shizao-tang), Sosiho-tang(Xiaocihu-tang), Shinki-hwan(Shenqi-wan). Most of other So-yangin's tongue coatings are Yellowish and tongue color is deep red. Tae-eumin have thin white tongue coating at the Mahuang-tang(Mahuang-tang). Red tongue color and drying tongue are found at Jowiseungki-tang(Tiaoweichengqi-tang)Daesiho-tang(Dacihu-tang)Saengmaek-san(Shengmai-san) 4. Conclusions: Following So-eumin's Experience prescriptions, So-eumin's tongue color is clear red and tongue coatings are thin white and greasy. Following So-yangin's Experience prescriptions, So-yangin's tongue color is deep red and tongue coatings are yellowish and scarce except Exterior cold disease. And So-yangin has specific symptom of irritability, oral sores. Tae-eumin's tongue has two sides of white thin tongue coatings and Red and drying tongue.

Color Developing Capacity of Plasma-treated Water as a Source of Nitrite for Meat Curing

  • Jung, Samooel;Kim, Hyun Joo;Park, Sanghoo;Yong, Hae In;Choe, Jun Ho;Jeon, Hee-Joon;Choe, Wonho;Jo, Cheorun
    • Food Science of Animal Resources
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    • 제35권5호
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    • pp.703-706
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    • 2015
  • The interaction of plasma with liquid generates nitrogen species including nitrite (NO2). Therefore, the color developing capacity of plasma-treated water (PTW) as a nitrite source for meat curing was investigated in this study. PTW, which is generated by surface dielectric barrier discharge in air, and the increase of plasma treatment time resulted in increase of nitrite concentration in PTW. The PTW used in this study contains 46 ppm nitrite after plasma treatment for 30 min. To evaluate the effect of PTW on the cured meat color, meat batters were prepared under three different conditions (control, non-cured meat batter; PTW, meat batter cured with PTW; Sodium nitrite, meat batter cured with sodium nitrite). The meat batters were vacuum-packaged and cooked in a water-bath at 80℃ for 30 min. The typical color of cured meat developed in cooked meat batter treated with sodium nitrite or PTW. The lightness (L*) and yellowness (b*) values were similar in all conditions, whereas, the redness (a*) values of cooked meat batter with PTW and sodium nitrite (p<0.05) were significantly higher than the control. These data indicate that PTW can be used as a nitrite source in the curing process of meat without addition of other nitrite sources.