17132results about How to "Improve the display effect" patented technology

An optical interference display panel is disclosed that has a substrate, an optical interference reflection structure, and a protection structure. The optical interference reflection structure has many color-changeable pixels and is formed on the substrate. The protection structure is adhered to the substrate with an adhesive and encloses the optical interference reflection structure between the substrate and the protection structure. The adhesive is used to hermetically isolate the optical interference reflection structure from water, dust and oxygen in the air. Moreover, the protection structure prevents the interference reflection structure from being damaged by an external force.

A method of optimizing lifetime of an OLED display element and an OLED display element with optimized lifetime for possible use in a tiled display, while maintaining light output are described. It compensates an OLED operating parameter such as supply voltage and / or on-time of the operating current based on at least one environmental factor which affects aging and on at least one operating factor which is indicative of aging, e.g. by determining the brightness of an OLED display element. To optimize the light output, pre-charge of the aged OLED display elements can be optimized. The knowledge of the working temperature of OLED tiles may be used to regulate the cooling and thus the working temperature, thus improving the lifetime of the display. Furthermore the intensity and contrast of the display illumination may be set within predefined limits to reduce the aging.

A light-emitting device includes a group III nitride semiconductor layer of a multilayer structure consisting of a group III nitride semiconductor having a major surface defined by a nonpolar plane or a semipolar plane and having at least an n-type layer and a p-type layer. A surface of the group III nitride semiconductor layer on a light extraction side is a mirror surface. The light-emitting device may further include a transparent electrode in contact with the surface of the group III nitride semiconductor layer on the light extraction side. In this case, a surface of the transparent electrode on the light extraction side is preferably a mirror surface.

The present invention provides a closed-loop system that allows the operator of video gaming machines or other systems to define promotional events for the particular machines or systems, monitor the activity of the particular machines or systems, and grant awards. More specifically, the promotional events may include scheduling information, winning criteria and awards. During the period of time that the promotional event is active, the activity of the machine or system is monitored to determine if the winning criteria has been satisfied. If the winning criteria are satisfied, information pertaining to event is recorded. The present invention is applicable to a variety of embodiments including video poker machines, black jack machines or other gaming and gambling machines, as well as other systems that include a display mechanism and an activity that can be monitored.

A polarizing element and an optical element are provided that can form a semitransparent or other type of liquid crystal display which is excellent in contrast in a reflective display mode and also is excellent in luminance in a transmissive display mode utilizing a reflective polarizing plate. A polarizing element comprising a reflective polarizing plate and an absorptive polarizer, wherein the reflective polarizing plate separates an incident natural light into a reflected light and a transmitted light each comprising a polarized light, and the absorptive polarizer is arranged on one side of the reflective polarizing plate so as to transmit a polarized light comprising the transmitted light. Also, an optical element comprising this polarizing element; and (a) a quarter wavelength plate or (b) an absorptive polarizing plate and a quarter wavelength plate arranged on the side of the absorptive polarizer in the polarizing element, wherein the absorptive polarizing plate has an axial relation so as to transmit a polarized light transmitted through the absorptive polarizer. While accomplishing the function as a semitransparent reflective polarizer utilizing the reflective polarizing plate, in a transmissive display mode, high luminance display can be achieved with high contrast, and in a reflective display mode, unnecessary reflected light (returned light) of an external light can be absorbed and cut off efficiently.