Abstract: A light guide plate (20) in accordance with the present invention includes a transparent plate (200) and a light transmittance enhancement layer (25). The transparent plate includes a light emitting surface (22), and a light incidence surface (21) opposite to the light emitting surface. The light transmittance enhancement layer is provided on the light emitting surface. The light transmittance enhancement layer is made of silicon dioxide or magnesium fluoride. A thickness of the light transmittance enhancement layer is in the range from 58˜69 nanometers. Because of the light transmittance enhancement layer, the light guide plate has enhanced efficiency of utilization of visible light. A backlight system (2) using the light guide plate is also provided.

Abstract: A heat generator includes a heat generating member and a temperature compensating member made from different material. The heat generating member includes a heat flow output face for outputing heat flow and five heat flow insulation faces. The temperature compensating member encloses and contacts the heat generating member except the heat flow output face. A heat flow compensating circuit is electrically connected between the temperature compensating member and the heat generating member for maintaining a state of no heat flow flowing between the heat generating member and the temperature compensating member, whereby the heat energy of the heat flow outputing from the heat flow output face is equal to the heat energy of heat generated by the heat generating member.

Abstract: A heat generator includes a heat generating member including a heat flow output face, a heat flow insulative member attachably surrounding the heat generating member except the heat flow output face for insulating the heat generating member except the heat flow output face, a heat flow compensating member attachably surrounding the heat flow insulative member but exposing the heat flow output face to allow it contacting with a specimen, and a heat flow compensating circuit connected between the heat flow insulative member and the heat flow compensating member. The circuit is capable of controlling heat generated by the heat flow compensating member to cause no heat flow flowing between the heat flow compensating member and the heat flow insulative member whereby the heat energy of the heat flow outputing from the heat flow output face of the heat generating member is equal to the heat energy of heat generated by the heat generating member.

Abstract: A heat generator includes a cubic heat generating member for outputing heat flow. The heat generating member includes a heat flow output face and five heat flow insulation faces. Five thermoelectric coolers are attached on the five heat flow insulation faces respectively. A heat flow compensating circuit is electrically connected between each heat flow insulation face and a corresponding thermoelectric cooler. The circuit is capable of controlling heat generated by the thermoelectric cooler to cause the temperature of the heating face of the thermoelectric cooler to be equal to the temperature of the heat flow insulation face which results in the heat energy of the heat flow outputing from the heat flow output face of the heat generating member substantially equal to the heat energy of the heat generated by the heat generating member.

Abstract: A light guide plate (12) has a light incidence surface (121) for receiving light, a light emitting surface (123) for emitting light, and a bottom surface (122). The bottom surface has a plurality of diffusion elements (124) arranged thereat. Each diffusion element defines a diffraction grating unit (125) therein. A grating direction of each diffraction grating unit is substantially perpendicular to a main direction of light beams received by the diffraction grating unit. Areas of the diffraction grating units progressively increase with increasing distance away from the light incidence surface. Diffractive capabilities of the diffraction grating units progressively increase with increasing distance away from the light incidence surface. These features improve the overall efficiency of utilization of light, and enable the light emitting surface to output highly uniform light.

Abstract: A heat pipe (20) includes a pipe (21), a wick (22), and an operating fluid. The wick is a capillary structure including a carbon nanotube layer, and is fixed to an inside wall of the pipe. The operating fluid is sealed in the pipe and soaks into the wick. The operating fluid includes a pure liquid, and a plurality of nanometer-scale particles uniformly suspended in the pure liquid. The nanometer-scale particles can be carbon nanocapsules (30) or particles of a metal (32) with high thermal conductivity. Each carbon nanocapsule can further have a metal with high thermal conductivity filled therein. The carbon nanotube layer contains carbon nanotubes of small size and high thermal conductivity, therefore the capillary performance of the wick is good. Further, because the operating fluid includes nanometer-scale particles with high thermal conductivity, this ensures that the operating fluid has high thermal conductivity.

Abstract: A heat generator includes a heat generating member for generating heat flow, a temperature compensating member, and a heat flow compensating circuit connected between the heat generating member and the temperature compensating member. The heat generating member includes a heat export face and a heat insulation face. The temperature compensating member includes a temperature compensating face facing the heat insulation face. The circuit is capable of controlling heat generated by a thermoelectric resistor of the temperature compensating member to cause the temperature of the temperature compensating face to be equal to the temperature of the heat insulation face which results in the heat energy of the heat flow exporting out from the heat export face of the heat generating member substantially being equal to the heat energy of the heat generated by the heat generating member.