Abstract: An organic light emitting structure employs alkaline-earth metal between a cathode and an electron-transport layer. Such a structure may improve degraded luminescence of light emitting structure and enhance stability of element operation.

Abstract: A traffic light structure includes an LED light source having a circuit board and multiple LEDs securely mounted on the circuit board, a front cover having a first incidence surface provided with multiple lenses each with rectangular lenses and a first emergence surface and an inner cover sandwiched between the front cover and the LED light source and having a second incidence surface and a second emergence surface provided with columns symmetrically arranged relative to a central axis on the second emergence surface. Light of the LEDs scattered and reflected by the inner cover and the front cover is inclined downward to a horizontal axis of the front cover.

Abstract: A traffic light includes a circuit board on which linear arrays of light-emitting diodes (LEDs) are mounted in a V-shaped arrangement, an inner cover having a first inner surface facing the LEDs to receive light from the LEDs and an opposite, first outer surface forming elongate prisms inclined with respect to a predetermined axis at a predetermined angle of 65-80 degrees, and a front cover having a second inner surface facing the first outer surface of the inner cover to receive the light from the inner cover, and an opposite, second outer surface through which the light is further projected out of the traffic light. The second inner surface of the front cover forms a honeycomb structure including a plurality of hexagonal lens blocks, each composed of an array of individual lens segments.

Abstract: An organic electro-luminescent device including a substrate, a plurality of organic electro-luminescent units and a reflective electrode layer is provided. The organic electro-luminescent units are stacked on the substrate, and the reflective electrode layer is disposed between the adjacent organic electro-luminescent units. As mentioned above, the organic electro-luminescent device can provide double-sided display function.

Abstract: A traffic light includes a circuit board on which linear arrays of light-emitting diodes (LEDs) are mounted in a V-shaped arrangement, an inner cover having a first inner surface facing the LEDs to receive light from the LEDs and an opposite, first outer surface forming elongate prisms inclined with respect to a predetermined axis at a predetermined angle of 65-80 degrees, and a front cover having a second inner surface facing the first outer surface of the inner cover to receive the light from the inner cover, and an opposite, second outer surface through which the light is further projected out of the traffic light. The second inner surface of the front cover forms a honeycomb structure including a plurality of hexagonal lens blocks, each composed of an array of individual lens segments.

Abstract: A backlight module for LCD monitors and method of backlighting are disclosed, in which a dome-shaped lens and a LED light source are employed in the backlight module. This method includes the preparation of a LED light source and a dome lens, fitting the dome lens over the light source, attaching the dome lens and the light source under the optical lens sheets, whereby the optical lens sheet closest to the light source is at a vertical distance X therefrom. The hemispherical lens provides light coverage on the optical lens sheet in a peripheral areas with diameters ranging from 2X to 7X, as compared with the small area (diameter X) using the conventional technique. The dome lens is constructed with a light emergent plane on one side, and a light incident plane around hollow cavity in the center.

Abstract: A traffic light structure includes an LED light source having a circuit board and multiple LEDs securely mounted on the circuit board, a front cover having a first incidence surface provided with multiple lenses each with rectangular lenses and a first emergence surface and an inner cover sandwiched between the front cover and the LED light source and having a second incidence surface and a second emergence surface provided with columns symmetrically arranged relative to a central axis on the second emergence surface. Light of the LEDs scattered and reflected by the inner cover and the front cover is inclined downward to a horizontal axis of the front cover.

Abstract: An organic electro-luminescent device including a substrate, a plurality of organic electro-luminescent units and at least one tungsten oxide layer is provided. The organic electro-luminescent units are stacked on the substrate, and each tungsten oxide layer is disposed between the adjacent organic electro-luminescent units. The organic electro-luminescent device having the at least one tungsten oxide layer therein has good luminance efficiency. Moreover, another organic electro-luminescent device is also provided in the present invention.

Abstract: An organic electro-luminescent device including an anode, a cathode, a light-emitting layer and a hole-transport layer is provided. The light-emitting layer is disposed between the anode and the cathode. The hole-transport layer is disposed between the light-emitting layer and the anode. The hole-transport layer has a formula as follows: wherein R is an alkyl group having 1˜3 carbon atoms.