Session Index

In this paper, we adopted a transparent display to develop an interactive system, and apply it in an entertainment field. The interactive system has three main technologies: eye tracking, object identification, and coordinate transformation. By integrating those technologies and high transmittance of the panel, we develop a novel interaction system.

 

This is a set of methods used on transparent displays to use tags to locate objects behind, and to make the three-dimensional images on the transparent display plane rotate and move according to the tag to make corresponding changes.

 

This paper will introduce a display design that combines a stress matching layer with a transparent Micro LED display. This design can simultaneously make the display have high-intensity stress characteristics and low light loss.

 

In order to improve the transmittance and background visibility of the transparent micro LED, through proper pixel design and arrangement, we propose an anti-diffraction structure of 7.65 inches and 57 PPI, so the intensity of the diffraction pattern is less than 1%.

 

This is a three-dimensional deformable substrate using engraving technology. The deformable substrate must use stretchable conductive materials. The resistive and capacitive components of wearable devices can be manufactured by using this technology.

 

A simulation platform for rotational display systems including all-around and swept volumetric displays is proposed. This platform enables system designers to predict spatial and temporal image quality of various system parameters for optimizing the system performance.

 

In the study, a prediction model of visual comfort is proposed based on an artificial neural network. Using the ambient illuminance levels and screen parameters as features, the model can well represent the visual perception with high correlation coefficients.

 

Camera spectral sensitivity estimation based on quadratic programming with Tikhonov regularization is studied. The Lagrange multiplier of this method was usually determined with L-corner in literatures. We found that response errors of estimated spectral sensitivity can be effectively reduced by the use of validation samples to determine the Lagrange multiplier.

 

This investigation reports observations of deformation behavior in liquid crystal elastomer (LCE) films that are thermos-responsive materials. The deformation of the LCE films that originates from the difference in coefficient of the thermal expansion between top and bottom surfaces can be changed by heat and restored by heat removal.

 

This paper introduces three different substrates. If the ITRI standard 45U PI substrate is used, the transmittance is about 67%; if the glass substrate or high-temperature transparent T89 PI substrate is used as the substrate, the transmittance can be close to 80%.

 

The angular color variation of RGB micro-LED with correlated color temperature (CCT) at 6500K is investigated. The model is developed the RGB micro-LED devices, the color variations are analyzed. The measurement of angular color variation of the RGB micro-LED sample is conducted validate the simulation model and obtain good agreement.

 

This study reports a full-color u-LED array with high color stability which combined (20-21) semi-polar blue LED substrates and quantum dot photoresist color-conversion layer(QDPR) with a chip size of 50 um in diameter. RGB pixel showed few color shifts when high current density injected and achieved 114.4%NTSC and 85.4% Rec.2020.

 

A hydrogenated amorphous silicon (a-Si:H) thin-film transistor (TFT) gate driver with Vth shift compensation for high reliability 14.1-inch automotive display has been proposed. For using Vth shift compensation structure, degradation at normal and high temperature environment of driving TFT and noise-free block could be compensated.

 

To enhance view quality of transparent AMOLED, substrate was importance part. The panel’s transmittance were improved by increasing substrate’s transparency. Transparent polyimide was difficultly used for AMOLED’s substrate because of its thermal stability. We verify several PI’s characteristics, as a result, the prototype of high transparent AMOLED was produced.

 

A high efficiency of green quantum dot light emitting diode with current efficiency of 58.1 cd/A and external quantum efficiency of 16 % was demonstrated. Compared to reference device, there is 2.6x improvement, and which is originated from better hole injection to QD layer and carrier balance within QLED

 

High-quality perovskite CsPbBr3 quantum dots (QDs-CsPbBr3) doped with pure natural aloe vera material were prepared using hot-injection method. The photoluminescence of aloe vera:QDs-CsPbBr3 was characterized by excitation wavelength of 522 nm, with narrow line-width emission of 20.8 nm. The QDLEDs exhibits a maximum luminance of 3161 cd/m2.

 

We propose a novel method to control the pretilt angles of liquid crystal (LC) molecules by doping with a gelator and using planar alignment layers coated on the substrates. Spontaneous vertical alignment of gelator was combined with the planar alignment layer to achieve 7–84° pretilt angles of the LCs.

 

We apply an in-plane electric field on cholesteric liquid crystals (CLCs) to produce a uniform lying helix (ULH) structure. The ULH alignment was cured by the polymer to form a stable structure. The flexoelectro-optic effect was demonstrated by measuring an in-plane rotation of helical axis in ULH CLCs.

 

We investigate the difference between VA-FFS LC mode employing LC materials with positive and negative dielectric anisotropy. New 3D electrode design was found to help improve potential response speed, transmission and stability. Due to its fast sub-millisecond response, VA-FFS LC has been actively developed for VR/AR in recent years.

 

We propose a vertically aligned (VA) liquid crystal cell with three-terminal electrode structure and simulate the relationship between response time and electrode structure. Simulation results predict the VA LC with three-terminal electrodes exhibits faster response than that with conventional electrodes. Experimental results confirm simulation predictions.

 

In this study, we propose a multi-angle director model to simulate the optoelectronic characteristics of a polymer-dispersed liquid crystal (PS-BPLC). We performed simulations based on the director model and calculated BPLC cell with a weighting for each angle. The model calculated results are in good agreement with the experimental data.

 

To extend the lifetime of blue PhOLED, a triplet exciton sharing layer was placed near the main recombination layer of emitting layer inside PhOLED. A green emitter was employed as energy transfer from blue emitter to prevent the triplet-polaron annihilation and triplet-triplet annihilation, leading to the enlarged device lifetime.

 

New TADF-type exciplex host with two different electron transport layers, DPPS and TPBi, were demonstrated. The optimums device shows the external quantum efficiency of 3.64%, the driving voltage of 5.2V, the luminance of 3971 cd/m2 at 6V, and CIE coordinates of (0.328, 0.569) and less carrier spike in TrEL.

 

The organic emitting materials were synthesized, with carbazole phenol-containing derivatives as host, and anthracene fluorine-containing derivative as guest. They all owned well thermal stability and steric effect. In the component test, they were used as the light-emitting layer by evaporation and demonstrated good performances.

 

The carrier transport properites of three donor-acceptor molecules incorporating both dicyano-imidazole and carbazole moieties, namely imM-o-Cz, imM-m-Cz, and imM-p-Cz by time-of-flight measurement. imM-m-Cz exhibited one of the most balanced carrier mobility in the reported literature, confirming that the molecule has a balanced bipolar nature.

 

OLEDs fabricated on an intentionally cracked ITO electrode have shown improved efficiency at a high electrical stress. The improved OLED characteristics are attributed to crack-free surface of the intentionally cracked ITO. In addition, high mechanical flexibility of intentionally cracked ITO has shown its high potential for flexible OLED applications.

 

In this study, a liquid crystal lens as a template during holographic exposure processes was investigated and demonstrated to fabricate HOEs as lenses.The experimental results show optical comparisons of generated Fresnel zones of completed HOEs via both templates of conventional glass lens and liquid crystal lens during fabrication processes, respectively.