摘要:
A light emitting device with a light extraction layer and the fabricating method thereof are provided. Embedding a light extraction layer between an emitting layer and a packaging layer can reduce the difference in the refractive index between the emitting layer and the packaging layer. In addition, the refractive index of the light extraction layer is adjustable by doping various concentrations of metal materials in the light extraction layer. The mechanism helps improving the light emitting efficiency of the light emitting device.
摘要:
The invention provides a liquid crystal device. The liquid crystal device includes a first transparent substrate and a second transparent substrate, wherein the first transparent substrate and the second transparent substrate are parallel to each other. Spacers are formed between the first transparent substrate and the second transparent substrate, to define a cavity; and a cholesteric liquid crystal is disposed into the cavity. Particularly, the liquid crystal device is coupled to a supply voltage, and three states of the liquid crystal device are selectively switched by adjusting the voltage, wherein the three states includes a first transparent state, a scattering state and a second transparent state.
摘要:
The LED package structure includes a substrate, an LED chip, a plastic package body, and two leading legs. In addition, the LED chip is arranged on the substrate and covered by the packaging plastic body. Moreover, the plastic package body contains a light-converging part and a light-scattering part, in which the light-converging part has a first axis and the light-scattering part has a second axis. In addition, the first axis of the light-converging part intersects the second axis of the light-scattering part. Furthermore, one terminal of each of the two leading legs is electrically connected to the LED chip while another terminal extends out of the packaging plastic body. Because the LED package structure can converge light and scatter light in different directions, the backlight module implementing the LED package structure has the advantage of a shorter light-mixing distance and better light utilization.
摘要:
A light-guide plate comprising a light-guide board having a first refractive index and at least one light-guide part buried inside the light-guide board is provided. The light-guide part has a second refractive index larger than the first refractive index. The light-guide board and the light-guide part buried therein have different refractive indices so that the total reflection may occur for improving the light transmission efficiency in the light-guide plate.
摘要:
The present invention provides a backlight module for a light emitting device (LED) chip holder. The backlight module includes a top guide-light board, a bottom guide-light board, a chip holder with an inclined plane thereon, and a light emitting diode chip. One side of the top guide-light board and the bottom guide-light board has a reflective sheet, and the light emitting diode chip is located on the inclined surface of the chip holder, and further the light emitting diode chip is embedded in the bottom guide-light. When the light emitting diode chip emits incident light, the light produces the total reflection on the bottom guide-light board to reflect to the reflective mirror. Then, the light is reflected to the top guide-light board by the reflective sheet, and is emitted out from the top guide-light board to be a light source for the backlight module.
摘要:
The present invention provides a backlight module for the light emitting device (LED) chip holder. The backlight module includes a top guide-light board, a bottom guide-light board, a chip holder with an inclined plane thereon, and a light emitting diode chip. The one side of the top guide-light board and the bottom guide-light board has a reflective sheet, and the light emitting diode chip located on the inclined surface of the chip holder, and further the light emitting diode chip embedded in the bottom guide-light. When the light emitting diode chip emitted incident light source, the light source produces the total reflection on the bottom guide-light board to reflect to the reflective mirror. Then, the light source is reflected to the top guide-light board by the reflective sheet, and is emitted out from the top guide-light board to be a light source for the backlight module to be a light source for the backlight module.
摘要:
A light-guide plate comprising a light-guide board having a first refractive index and at least one light-guide part buried inside the light-guide board is provided. The light-guide part has a second refractive index larger than the first refractive index. The light-guide board and the light-guide part buried therein have different refractive indices so that the total reflection may occur for improving the light transmission efficiency in the light-guide plate.
摘要:
The LED package structure includes a substrate, an LED chip, a plastic package body, and two leading legs. In addition, the LED chip is arranged on the substrate and covered by the packaging plastic body. Moreover, the plastic package body contains a light-converging part and a light-scattering part, in which the light-converging part has a first axis and the light-scattering part has a second axis. In addition, the first axis of the light-converging part intersects the second axis of the light-scattering part. Furthermore, one terminal of each of the two leading legs is electrically connected to the LED chip while another terminal extends out of the packaging plastic body. Because the LED package structure can converge light and scatter light in different directions, the backlight module implementing the LED package structure has the advantage of a shorter light-mixing distance and better light utilization.
摘要:
A transflective display device includes upper and lower substrates, and a plurality of pixel regions that are disposed between the upper and lower substrates. Each of the pixel regions is controllable to switch between a bright state and a dark state, and includes a liquid crystal display structure, an emissive display structure, and a photovoltaic structure. The photovoltaic structure is capable of absorbing light to generate an electrical power. The liquid crystal display structure is controllable to operate between a transmissive mode and a reflective mode. The emissive display structure is controllable to emit graded light or to not emit light.