In this report, an inverted tandem organic light-emitting device (OLED) with the optimizations of connecting layer configurations has been studied. By comparing three different materials, a highly conductive connecting layer, WO3/Ag/WO3 was obtained for efficient tandem OLED.

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We fabricated a series of blue phosphorescent organic light emitting devices (OLED) by using 9-（2-（1-phenyl-1H-benzo[d]imidazol-2-yl）phenyl）-9H-carbazole (o-CbzBz) as the host of the emitting layer. In addition, the dopant material is Bis[2-(4,6-difluorophenyl)pyridinato-C2,N](picolinato) iridium(lll) (FIrpic) . In this study, we investigate the performance of o-CbzBz OLEDs with various FIrpic concentrations. At the present, the 33.68 cd/A of current efficiency can be obtained at the 9% doping ratio.

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White organic light-emitting diode (WOLED) device combined with color filters (CFs) has become one of promising methods to produce full color AMOLED displays. To make a high resolution of the flexible CFs element is one of the key technologies. Currently, we have been fabricated 6-inch resolution 266ppi, color saturation NTSC ≧ 70%, transmittance≧ 40% of the color filter on a flexible substrate , and bending test to 7,500 times (bending radius of 7.5mm), RGB sub-pixel components without damage or crack case.

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Organic light-emitting diode (OLED) will possibly become the mainstream in lighting technology given that its features, such as self-luminosity, deflectivity, and penetrability, are different from those of common light sources. Studies on OLEDs have generally focused on the luminous efficiency of its components; however, selecting an optimum color mixing spectrum for OLEDs to apply on illumination has seldom been discussed. In this study, color mixing is conducted by combining two and three colors based on color mixing theory. Through screenings that employ related evaluation techniques such as chroma standard and color rendering, we identify a set of optimum color mixing spectra at different correlated color temperatures that will be evaluated via the color rendering index (CRI), the color quality scale (CQS), and the feeling of contrast index (FCI).

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In this study, the nitrogen-doped zinc oxide (ZnO:N) was adopted as the channel layer material of TFTs in order to enhance bias reliability. The optimized ZnO:N TFT exhibited the mobility of 7.62 cm2/V-s with a superior stability, the Vth shift was below 0.2 V under NBIS (-2.5MV/cm, 450nm illumination)

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We have developed three none real contacted touch panel systems that can operate reliably and sanitarily. A customized designed and manufactured conventional touch panel can operate non-contacting and at the distance up to 2cm. The other types are infrared LEDs net type and position detection optical types, can operated at larger distances.

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Chiral-azobenzene is a chiral dopant with optically tuned HTP that results from the photo-isomerization between trans- and cis-isomers via exposure to UV or visible light. Regarding free energy, LCs tend to be stable at planar (focal conic) textures when pitch length is elongated (shortened) by exposure to UV (visible) light.

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A method to realize 2D/3D switchable time-multiplexing autostereoscopic display with PDLC film is introduced. Quantitative measurements of luminance and crosstalk are executed to evaluate the optical performance on the display from PDLC film. It is also proposed that the PDLC should be synchronized with the backlight and screen.

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The electro-optical properties of cholesteric liquid crystal display driven by a three-terminal-electrode architecture are investigated. The developed device has two stable states, the standing-helix and lying-helix arrangements, achieved by the in-plane and vertical fields, respectively. Further, the long-term bright state of the device is kept without continuously supplying voltage.

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Optically compensated bend (OCB) cells are fabricated by doping the cross-linking monomer in nematic liquid crystals to control the pretilt angle with respect to the substrate surface. With the polymerization process, the twist structure in the initial state is achieved, which can reduce the warm-up time of the OCB cells.

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The cell thickness on optoelectric properties of blue phase liquid crystal displays is investigated and the relationship between the phase retardation (φ) and driving voltage (V) is measured. Using the φ–V relation, the Kerr constant is obtained, and different thicknesses will affect the Kerr constant.

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This paper reports the characteristic of flexible touch sensor film after de-bond between de-bonding layer and flexible substrate by differential pressure method. This method is easy, fast and safe for touch sensor film, which tact time is less than 1 sec and resistance variation increase only 85 Ohm after de-bond.

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Abstract – We investigate the electro-optical properties of the polymer stabilized blue-phase (BP) liquid crystals. The doped monomers accumulate at the defect cores, therefore stabilize BP structure and then increase the temperature range of BP state. The doped monomer also induces the appearance of spherical BP phase, which is not observed in the pristine BP mixture.

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A glass-free 3D interactive system involving a Leap Motion Controller and a full HD auto-stereoscopic display is presented. The system is capable of achieving high resolution 3D image, high accuracy, high speed and good robustness. Control of a virtual 3D keyboard is demonstrated to test the system

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The article introduces a quantified method to evaluate the perceptual resolution by comparing the contrast between the 2D and 3D displaying on an experimental device, which provides an objective evaluation on an auto-stereoscopic display that has not been standardized.

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We propose a wireless radio frequency identification system demodulator circuit which is used with amorphous silicon thin film transistor as the driving device. The function is analog data receiving and changes to digital data to back-end digital circuits. The suitable frequency range consistent with the definition of the frequency identification system (135KHz ~ 13.56MHz). By the feasibility of this circuit, it is possible that all digital circuits utilize amorphous silicon transistors gradually and replace the general bonding of IC. It’s not merely increases productivity significantly, but also achieves target that the RFID system on panel.

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We have investigated on the characteristics and the stability of amorphous indium gallium zinc oxide (a-IGZO TFTs) by nitrogen doping. Under deposition condition and annealing temperature, the optimized device showed the mobility of 19.21 cm2/Vs with subthreshold swing of 0.26 V/decade. Nitrogen doping improves the stability of indium gallium zinc oxide thin-film transistors and maintains the ease of device manufacture. These results showed the application potentials for flat panel display technology.

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We have developed a non-hardware three dimensions image display system. The images can be visualized as a 360° display and the system can also be interactively made to display the models in various poses. The analysis and the FLUENT software simulation are present in this article.

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A liquid crystal (LC) microlens with large dynamic focal length range at low operating voltage are demonstrated. As the voltage is increased, the phase retardation resulting from the center and edge is decreased and an effective focal length can be obtained. The electro-optical property is demonstrated.

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A new type exit pupil expander applied to laser scanning projector has been proposed in this letter. We describe the design method of MLA to achieve higher uniformity, and it can fit to any system which used laser as the light source.

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Polarized type Titmus stereo test book is used for testing stereopsis nowadays. But wearing the polarized glassed is not convenient and comfortable. To improve this problem, this study proposes a naked Titmus stereo test book to help people testing their stereopsis easily.

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A easier and less time comsuming simulation method using the Fourier transform was proposed to analysis moiré fringe in a touch panel display. The fringe was formed by an ITO layer and a color filter. We also changed the contrast of patterns in the simulation, in order to provide clearer moiré fringe.

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This paper presents a facile and low cost method to fabricate poly-dimethylxiloxane (PDMS) microlens arrays (MLAs) thin films for enhancing light extraction of white light organic light emitting diodes (WLOLED). The MLAs thin films were obtained by molding from breath figures PS (polystyrene) molds. One of the PDMS MLAs thin films was attached to the backside of the ITO substrate of a WLOLED to increase light out-coupling from the substrate mode. The maximum out-coupling efficiency improvement was 48%. The breath figures technique presented in this work is a mask-less fabrication technique which is useful to fabricate large area MLAs thin films to enhance light out-coupling efficiency of a WLOLED.

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