Journal of Display Technology

A nematic display with three electrodes and double fringing fields is proposed. Both top and bottom substrates have pixel and common electrodes to generate complementary fringing fields for achieving high transmittance. This mode exhibits submillisecond gray-to-gray response time and high contrast ratio. The effect of pixel misalignment on transmittance is discussed. View full abstract»

A new level shifter circuit suitable for implementation using n-channel oxide thin-film transistors (TFTs) is reported. This level shifter is designed to convert a single 10 V input signal into a 20 V output signal. In order to raise the output voltage up to VDD in spite of the large zero- VGS current of the oxide TFT, negative VGS is applied t... View full abstract»

We report a high performance negative dielectric anisotropy (Δε) liquid crystal for fringing field switching (n-FFS) display. We compare the electro-optic characteristics of FFS cells using positive and negative Δε LCs. With comparable driving voltage and response time, the n-FFS cell has advantages in higher transmittance, single gamma curve, less cell gap sensitivity ... View full abstract»

We developed a fluorinated, UV-stable, high birefringence and low viscosity liquid crystal mixture for projection displays. With this mixture in a thin-cell-gap LCOS, we can achieve submillisecond gray-to-gray response time at an elevated temperature, which enables color sequential projection displays with negligible color breakup. View full abstract»

The four-point bend test is one of the most popular strength testing methods used to test LCD panels. Traditionally, a panel is assumed to be either a monolithic piece of glass or two independent pieces of glass sliding against each other. This paper uses finite element analysis to show that a panel behaves like a monolithic piece of glass in the epoxy region (near the edges) but behaves like two ... View full abstract»

A time-multiplexed dual-view display device using a blue phase liquid crystal is proposed. In this design, a vertical field switching blue phase liquid crystal display (VFS-BPLCD) panel is used to achieve high transmittance and fast response. Combined with a directional backlight module, this device can present two different images to viewers sequentially. The proposed device has advantage in full... View full abstract»

A new gate driver has been designed and fabricated by amorphous silicon (a-Si) technology. With utilizing four clock signals in the design of gate driver on array (GOA), the pull-up transistor has ability for both output charging and discharging, and layout size of the proposed gate driver can be narrowed for bezel panel application. Moreover, lower duty cycle of clock signals can decrease static ... View full abstract»

A new electrode configuration was proposed to improve the performance of color ac plasma display panels (PDPs). ITO electrodes on the front plate of a PDP were used as auxiliary sustain electrodes, which were electrically isolated from the metal electrodes by a dielectric isolation layer. When this type of PDP operates, the sustain voltage waveforms are only applied to the metal electrodes, so the... View full abstract»

Perceptual resolution and crosstalk of active and passive stereoscopic 3D displays are evaluated by subjective tests. Test patterns of gratings with various contrast and spatial frequencies are used to determine the contrast thresholds, from which the contrast sensitivity of human visual systems is obtained. Perceptual resolution tests show that viewers can perceive the highest vertical frequency ... View full abstract»

In this paper, we propose an advanced backlight dimming technique that preserves the quality of color and details in images even when the backlight luminance of liquid crystal display (LCD) devices is lowered. The proposed backlight dimming technique consists of the following two steps: backlight luminance level selection and pixel compensation. In the first step, to reduce power consumption, the ... View full abstract»

We developed a simple method to perfuse oil-water in electrowetting displays. The theoretical model to simulate the progress of water entry into the interlayer while squeezing the oil was established. It shows that the minimum inlet pressure of water required to enter the interlayer must counteract the capillary pressure difference at the interface and the hydraulic resistance. In addition, the co... View full abstract»