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The Index of cognitive Information Complexity (C info ) and the Index of cognitive Information Difficulty (D info ) are measured at the psychological level for the application of learning and design when people are reading and recognizing the characters; thus, how to effectively monitor the information complexity and difficulty for the purpose of educational learning and design becomes...
We have reported the efficient Poly (2-methoxy, 5-(2-ethylhexoxy)-1,4-phenylene vinylene) (MEHPPV) organic light-emitting diodes based on 3-bis(4-tert-butylphenyl-1,3,4-oxadiazoyl) phenylene (OXD-7) and ITO bilayer anodes. OXD-7 was inserted between ITO anode and MEHPPV and acted as a hole buffer layer. The results demonstrated that the efficiency and brightness of the devices with ITO/OXD-7/MEHPPV/LiF/Al...
This study constructed an evaluation framework to obtain the perceptual quality on liquid crystal display-television (LCD-TV) from the user’s point of view. Due to the difficulty for subjects to evaluate too many LCD-TVs simultaneously, the pairwise comparison of analytical hierarchy process (AHP) method was implemented in this study. After investigating the relationship between subjective assessments...
White organic light emitting devices (WOLEDs) with an RBG stacked multilayer structure were demonstrated. In RGB stacked OLEDs, blue emitting, 2-t-butyl-9,10-di-(2-naphthyl)anthracene (TBADN) doped with p-bis(p-N,N-diphenyl-amono-styryl)benzene (DSA-Ph), green emitting, tris-(8-hydroxyquinoline)aluminum (Alq) doped with C545, and red emitting, tris-[8-hydroxyquinoline]aluminum (Alq) doped with 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-...
We test the perception of 3D surfaces that have been rendered by a set of lines drawn on the surface. Each surface is rendered as a family of curves which are in the simplest case the intersections with a family of parallel planes. On each trial, a surface or its “distorted” version is shown in this way, in an arbitrary orientation on an LCD screen or in a volumetric 3D display. The distortion is...
An alternating current electroluminescent display has been direct written onto a flexible plastic substrate. A hybrid layer of poly(2-methoxy,5(2-ethylhexyloxy)-p-phenylene vinylene) (MEH-PPV) and CdSe quantum dots (QDs) were used to convert the light emitted by electroluminescent ZnS phosphor into red light. The emission wavelength of the display is found to be directly related to the emission of...
In a typical environment for augmented reality, subjects were asked to detect visual information presented at 15–28° in the periphery of the visual field. Information was displayed tachistoscopically for 200, 300 and 600ms. Popular low cost beamer producing colour breakup was used to present peripheral stimuli. We found that exposure time affects detectability of targets. By extrapolating our results...
This paper reviews the literature on factors that influence the visual (ocular) accommodation response when using see-through virtual image displays (VIDs) such as head-up and helmet-mounted displays. This review suggests that the overall accommodation response is determined by a complex interaction of many factors, some of which are associated with the visual stimulus (such as blur and chromatic...
Organic light-emitting diodes with ultra thin Rubrene layer have been fabricated with the structure of ITO/hole-transport layer/Rubrene/AlQ/LiF/Al. The hole-transport layer are copper phthalocyanine (CuPc), poly(3,4-ethylenedioxythiophene) doped with polystrenesulphonic acid (PEDOT: PSS), poly(N-vinyl carbazole) (PVK), and N,N′-diphenyl-N,N′-bis(1,1′-biphenyl)-4,4′-diamine (NPB), respectively. Compared...
This paper presents a waveform for driving a high-resolution plasma display panel (PDP) which uses a gas mixture of high Xe content. To prevent degradation of picture quality due to unstable discharges between two facing electrodes, the common electrode was biased at a negative voltage during the set-up period, and the data electrode was biased at a positive voltage during the sustain period. A pre-reset...
This paper presents a method of surface treatment of phosphor using a single crystalline MgO powder, and investigates effect of the surface treatment on discharge property of a plasma display panel (PDP). The discharge gas of the PDP was a 88% Ne–12% Xe gas mixture at a pressure of 400Torr. For the surface treatment, a single crystalline MgO powder was mixed in methanol, sprayed on the phosphor surface,...
Organic light-emitting diodes (OLEDs) with multilayer quantum well (MQW) structure were fabricated, which consisted of alternate organic materials 2-(4-biphenylyl)-5(4-tert-butyl-phenyl)-1,3,4-oxadiazole (PBD) and tris(8-hydroxyquinoline) aluminum (Alq 3 ). PBD is used as potential barrier layer, Alq 3 used as potential well layer and emitting layer. Compared with double-layer structure,...
This research investigated the effects of text presentation on online behaviour and preferences in order to generate design guidelines for the production of web pages. Previous research has indicated that method of text presentation has a significant impact on usability. The present research found that varying text presentation had a significant effect on task performance, with wider line spacing...
Conditions of high and low optic flow were generated in a display used for a driving simulator. Thirty drivers were requested to produce vehicle speeds of either 30 or 60mph with the geometric field of view at 25, 55, or 85 visual degrees. Drivers overestimated the production of 30 by 20mph. It was also found that the production of speed was highly dependent on the geometric field of view. These results...
VITAL is an acronym for VIbro-TActiLe display concepts and devices. The new tactile displays presented are based on an integrated electromagnetic actuator arranged in a (8×8) pin matrix. A multilayer approach with a simple assembly procedure enables the development of a new generation of competitively priced tactile matrices with potentially high micro-actuator density. The independent amplitude and...
In plasma display panels, this paper deals with a new scan driving method which can reduce power consumption and which can improve the reliance of driving circuits. The IPS (interlaced/progressive scan) method as a new driving method was proposed and its efficiency was proven by experiments. This method selects a used scan method from interlaced and progressive scan methods in each subfield, according...
Alternating current thick film light emitters has been prepared by using ZnS:Cu commercial phosphors and thick film technology. The dependence of electroluminescent emission on excitation frequency and voltage applied to light emission devices was studied. Electroluminescent spectra were decomposed into four Gaussians corresponding to emission transitions and their respective peak position wavelengths...
Despite current advances in multimedia environments, tracing the geometrical structures of graphical images using force feedback remains an important research issue. In this paper, the development and implementation of a multi-modal display system (MMDs) for tracing 2D boundaries in graphic images are discussed. A method is proposed that provides a type of haptic feedback designed to assist a user...
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