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Leng C.,Peking University | He X.,Peking University | Lam H.-M.,Peking University | Meng X.,Peking University | And 4 more authors.
Digest of Technical Papers - SID International Symposium | Year: 2015

A novel row-division (RD) driving scheme together with a new AMOLED pixel circuit are proposed. The RD method can effectively increases the OLED emission time compared with the simultaneous emission method while retaining the prevalent simple pixel structure. In addition, the proposed pixel circuit, can not only effectively compensate for the threshold-voltage shift of the driving TFT and OLED, but also make OLED bias under negative stress in the non-emitting period to achieve an extended life expectancy. © 2015 SID.


Ni S.,Shanghai JiaoTong University | Li H.,Shanghai JiaoTong University | Li S.,Shanghai JiaoTong University | Zhu J.,Shanghai JiaoTong University | And 10 more authors.
Journal of Materials Chemistry C | Year: 2014

A small amount of polyaniline functionalized graphene (G-PANI, 0.03-2.00%) nanosheets was doped into conventional polymer-stabilized blue phase liquid crystals (PS-BPLCs), and the electro-optical property effects were studied. The driving capability of BPLCs can be much improved in that the Kerr constant of BPLCs doped with 0.05 wt% G-PANI is increased by ∼55% compared with that of BPLCs without G-PANI. Meanwhile, this composite exhibits no degradation of electro-optical properties, such as response time, hysteresis and residual birefringence. © 2014 The Royal Society of Chemistry.


Zhang P.,Nanjing Southeast University | Tu Y.,Nanjing Southeast University | Yang L.,Nanjing Southeast University | Tolner H.,Nanjing Southeast University | Zhang W.,China Star Optoelectronics Technology Co.
ICOPS/BEAMS 2014 - 41st IEEE International Conference on Plasma Science and the 20th International Conference on High-Power Particle Beams | Year: 2015

A Flat Panel Detector is proposed for detecting radiation. Inheriting from plasma display panel structure, the flat panel detector has a potential in low manufacture cost, long life time and wide application prospective. In this work, the structure of the novel flat panel detector is introduced and the detector behavior has been studied with respect to many parameters, including the hole diameter, the operating voltages, the size of the drift region and shadow mask. The results reveal the unique characteristics of the detector and provide guidelines for further modifying the current structure. © 2014 IEEE.


Chang C.,Nanjing Southeast University | Xia J.,Nanjing Southeast University | Yang L.,Nanjing Southeast University | Lei W.,China Star Optoelectronics Technology Co | And 2 more authors.
Applied Optics | Year: 2015

The Gerchberg-Saxton (GS) algorithm is widely used to calculate the phase-only computer-generated hologram (CGH) for holographic three-dimensional (3D) display. However, speckle noise exists in the reconstruction of the CGH due to the uncontrolled phase distribution. In this paper, we propose a method to suppress the speckle noise by simultaneously reconstructing the desired amplitude and phase distribution. The phase-only CGH is calculated by using a double-constraint GS algorithm, in which both the desired amplitude and phase information are constrained in the image plane in each iteration. The calculated phase-only CGH can reconstruct the 3D object on multiple planes with a desired amplitude distribution and uniform phase distribution. Thus the speckle noise caused by the phase fluctuation between adjacent pixels is suppressed. Both simulations and experiments are presented to demonstrate the effective speckle noise suppression by our algorithm. © 2015 Optical Society of America.


Yang L.,Nanjing Southeast University | Xia J.,Nanjing Southeast University | Chang C.,Nanjing Southeast University | Zhang X.,Nanjing Southeast University | And 2 more authors.
Applied Optics | Year: 2015

An accurate phase characterization method by digital holographic microscopy for spatial light modulators (SLMs) is proposed. This method permits high precision measurement for individual SLM pixels. Based on this method, the nonlinear dynamic phase response of the SLM is analyzed and calibrated in two steps: the global phase calibration and the local phase calibration. After the calibrations, both the phase modulation deficiency and the sharp phase jump of the 26-step grating are optimized. The root mean square error of the phase grating is reduced from 1.6319 to 0.2132 rad. The accurate phase distribution control may find various applications concerning high-resolution and high-accuracy wavefront modulation. © 2015 Optical Society of America.


Kang C.-T.,China STAR Optoelectronics Technology Corporation | Hai B.,China STAR Optoelectronics Technology Corporation | Ye X.,China STAR Optoelectronics Technology Corporation
Proceedings of the International Display Workshops | Year: 2012

In this article, we study how to approach less the light leakage appearance with the construction use single side compensation film on our VA cell both have high transmittance, low module cost design and feasibility for mass production.


Kang C.-T.,China STAR Optoelectronics Technology Corporation | Chen S.-F.,China STAR Optoelectronics Technology Corporation | Zhang X.,China STAR Optoelectronics Technology Corporation
Proceedings of the International Display Workshops | Year: 2011

In this article, the relationship between UV curing conditions and generated tilt angle in PS-VA process was studied. The article also explored how the optical performance, voltage holding ratio, and residual monomer. vary with UV light wavelength.


Hsieh C.-C.,China Star Optoelectronics Technology Co. | Zhao Y.,China Star Optoelectronics Technology Co. | Song Y.,China Star Optoelectronics Technology Co. | Chiu C.-Y.,China Star Optoelectronics Technology Co.
Digest of Technical Papers - SID International Symposium | Year: 2013

The Polymer-stabilized alignment method has highly potential for manufacturing high performance displays due to the higher contrast ratio and faster response. In this study, we have investigated the liquid crystal mixture with alkenyl group monomer for response and reliability issues. The alkenyl group monomer can help reducing the rotational viscosity but cause the residual of reactive mesogen (RM) increased. New RM was adopted to overcome the residual issue and contributed excellent optical and reliability results. © 2013 Society for Information Display.


Zhong X.,China Star Optoelectronics Technology Co. | Huang H.J.,China Star Optoelectronics Technology Co. | Lee K.-C.,China Star Optoelectronics Technology Co. | Ma X.,China Star Optoelectronics Technology Co.
Digest of Technical Papers - SID International Symposium | Year: 2013

An unexpected phenomenon named as critical effect of polymer bumps in PS-VA LCD was found and studied. It shows that only if the bumps amount reaches sufficient high they can reduce the LCD optical rising time. It suggests a safe RM content value in LC mixtures when producing PS-VA LCD. © 2013 Society for Information Display.


Chen L.-Y.,China Star Optoelectronics Technology Co. | Chen Y.-Y.,China Star Optoelectronics Technology Co. | Hou H.-L.,China Star Optoelectronics Technology Co. | Mo Y.,China Star Optoelectronics Technology Co. | Chiu C.-Y.,China Star Optoelectronics Technology Co.
Digest of Technical Papers - SID International Symposium | Year: 2013

CSOT has successfully developed 110-inch LCD TV that is the largest LCD TV. It integrates many innovations in LCD technology, containing 50000:1 dynamic contrast ratio, 1000 nits ultra high brightness, high-saturated color reproduction with NTSC 92% and 288 areas local dimming backlight. Moreover, Shutter-glasses 3D function has also been achieved © 2013 Society for Information Display.

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