University of Central Florida Research Foundation, Inc.

Toppoly Optoelectronics Corporation

Tpo Displays Corporation

Industrial Technology Research Institute

Au Optronics Corporation

Qi Hong

Shin-Tson Wu

Ruibo Lu

Thomas Xinzhang Wu

Qiong-Hua Wang

Yung-Hsun Wu

Xinyu Zhu

Kuo-Chang Lee

The disclosure provides a display backlight unit and its light down conversion film. The light down conversion film may include a quantum-dot layer sandwiched between input substrate and an exit substrate. First and second refractive asymmetric micro-prisms are disposed on two opposite input and first exit surfaces of the input substrate, respectively. On the input surface of the input substrate, multiple arrays of the asymmetric refractive asymmetric micro-prisms preserve the large off-axis angle of incident light with first wavelength. On the first exit surface of the input substrate, multiple arrays of the refractive asymmetric micro-prisms increase the reflectance of the large incident angle light. A second exit surface of the exit substrate includes refractive symmetric micro-prisms. The refractive asymmetric micro-prisms of the input substrate and the refractive asymmetric micro-prisms of the exit substrate have rounded tips and valleys for enhancing refraction of the first light and the second light.

Light down conversion film and display backlight unit using the same

A circular polarizer comprising a single linear polarizer producing a linear state of polarization and at least one phase retardation film layered with the single linear polarizer. In a first embodiment, the at least one phase retardation film includes at least one uniaxial A-plate phase retardation film and at least one uniaxial C-plate phase retardation film. In a second embodiment of the invention, the circular polarizer includes a linear polarizer and at least one biaxial phase retardation film layered with the linear polarizer. In another example of the circular polarize of the second embodiment, at least one uniaxial A-plate phase retardation film and/or at least one uniaxial C-plate phase retardation film is also layer with the linear polarize and the biaxial phase retardation film.

Wide-acceptance-angle circular polarizers

A transflective liquid crystal display (TLCD) using separate transmissive (T) and reflective (R) cells in which two liquid crystal materials with different birefringence changes are used. The birefringence change of the R region is half of the birefringence change of the T region. In this case, a single cell gap is possible and identical transmittance and reflectance for R and T is obtained. It is applicable to various reflective LC modes, and the fabrication methods are simple.

Transflective liquid crystal display using separate transmissive and reflective liquid crystal cells and materials with single cell gap

Structures, devices, systems and methods of using multi-domain vertical alignment liquid crystal displays with high transmittance, high contrast ratio and wide view angle in which at least one of the electrode substrates has circular or ring-shaped openings, such as holes or slits. Circular or ring-shaped patterns for openings and electrodes have not been used in the construction of a liquid crystal display. The new multi-domain vertical alignment (MDVA) liquid crystal display is particularly suitable for liquid crystal display television and computer monitor applications.

Vertical alignment liquid crystal display with high transmittance and wide view angle

Systems, methods, apparatus and devices for head mounted stereoscopic 3-D display devices using the tunable focus liquid crystal micro-lens array eye to produce eye accommodation information. A liquid crystal display panel displays stereoscopic images and uses tunable liquid crystal micro-lens array to change the diopter of the display pixels to provide eye accommodation information. The head mounted display device includes a planar display screen, planar tunable liquid crystal micro-lens array and planar black mask. The display device may optionally include a bias lens. In an embodiment, the display device also includes a backlight and a prism sheet for displaying the images on the display screen. The display screen, tunable liquid crystal micro-lens array, black mask and optional backlight and prism may be flat or curved.

Head mounted display with curved display screen, curved tunable focus liquid crystal micro-lens and first and second curved black masks corresponding independently to one of the right and the left eye

A multi-domain in-plane-switching liquid crystal display with small color shift, wide viewing angle and fast response. The structure of the multi-domain in-plane switching liquid crystal displays comprises plural chevron-shaped common electrodes and chevron-shaped pixel electrodes, arranged alternatingly to form a multi-domain liquid crystal distributions. In an embodiment the structure includes a polarizer and an analyzer and the liquid crystal material is homogenously aligned. In another embodiment the structure includes alignment films for vertically aligning the liquid crystal material and crossed linear polarizers, circular polarizers or a combination of linear polarizers and compensation film. In another embodiment, the multi-domain in-plane switching liquid crystal display provides at least two different uniformly aligned liquid crystal domains, for a double multi-domain-In-plane switching LC display.

Multi-domain in-plane switching liquid crystal displays with interleaved common and pixel chevron-shaped electrodes in both horizontal and vertical directions to divide electrode structure into two regions

Head mounted display with eye accommodation having 3-D image producing system consisting of, for each eye, one single planar display screen, one single planar tunable focus LC micro-lens array, one single planar black mask and bias lens

Vertical alignment liquid crystal displays with high transmittance and wide view angle

A representative device comprises a plurality of pixel units configured for use in a vertical alignment liquid crystal display, wherein a first of the pixel units comprises a first substrate, a second substrate and liquid crystal material. The first substrate comprises a pixel layer thereon, wherein the pixel layer comprises a thin film transistor and a pixel electrode, and the pixel electrode in the first of the pixel units has first openings therein. The second substrate comprises a common electrode thereon, wherein the common electrode has second openings therein, and the second openings and the first openings are arranged in an overlying and cross-over relationship with respect to each other. The liquid crystal layer is between the first and second substrates.

Vertical alignment liquid crystal displays

Structures, devices, systems and methods of using fringe field switching mode liquid crystal display (LCD) in which the electrodes have a trapezoidal structure. The disclosed fringe field switching mode LCD includes common electrodes and pixel electrodes arranged on a back substrate to produce a fringe field. Each electrode is comprised of alternating sections of main bone and trapezoidal electrode.

Fringe field switching liquid crystal displays using trapezoid electrodes

An electrode array structure in a pixel area of a fringe field switching mode LCD (FFS-LCD). A comb-shaped common electrode includes a first bar extending in a first direction and a plurality of first teeth extending in a second direction from the first bar, wherein each first tooth comprises a first bone having a plurality of discontinuous first trapezoidal protrusions on each side thereof. A comb-shaped pixel electrode comprises a second bar extending in the first direction and a plurality of second teeth extending in the second direction from the second bar, wherein each second tooth comprises a second bone having a plurality of discontinuous second trapezoidal protrusions on each side thereof.

Electrode array structures of fringe fields switching mode LCDs

A novel vertical alignment liquid crystal display with a structure having a flower-shaped vertical alignment (FVA) has the properties of fast response, high contrast ratio and a wide view angle. The method for making the device and structure of the FVA comprises the arrangement of: a first substrate with a protrusion shaped electrode as the pixel electrode; and a second substrate as the common electrode; aligning layers formed on said first and second substrates providing liquid crystal vertical alignment; liquid crystal materials filling a space between said first and second substrates as a liquid crystal cell; a linear polarizer and wide band quarter-wave film forming a circular polarizer; and, said circular polarizer disposed on exterior surfaces of said liquid crystal cell. When voltage is applied to the device, the liquid crystal (LC) director distribution looks like a flower blossom.

Flower-shaped vertical alignment liquid crystal displays with wide view angle and fast response time

A transflective liquid crystal display with a single LC cell gap. Each of a plurality of pixel regions comprises a reflective region and a transmissive region. A liquid crystal cell wall structure between the upper and lower substrates creates a first channel at reflective region and a second channel at transmissive region. A first liquid crystal layer is filled into the first channel of the reflective region. A second liquid crystal layer is filled into the second channel of the transmissive region.

Growing community of inventors

Orlando, FL, United States of America

Qi Hong