摘要:
A polarizer (2) for a liquid crystal display device includes a polarizer base (21), a first protective layer (20) and a second protective layer (22) on two sides of the polarizer base for protecting the polarizer base, and an anti-reflection layer (25) on the first protective layer. The anti-reflection layer includes a first layer (26), a second layer (27), a third layer (28) and a fourth layer (29) stacked in order. The anti-reflection layer of the polarizer can reduce the reflection of the light irradiated on the polarizer, and the loss of light can be reduced and higher light transmission rate can be achieved.
摘要:
An integrated circuit package includes a die mounted on a substrate, an integrated heat spreader set above the die, and an array of carbon nanotubes mounted between the die and the integrated heat spreader. The integrated heat spreader is fixed on the substrate, and includes an inner face. The array of carbon nanotubes is formed on the inner face of the integrated heat spreader. Top and bottom ends of the carbon nanotubes perpendicularly contact the integrated heat spreader and the die respectively. Each carbon nanotube can be capsulated in a nanometer-scale metal having a high heat conduction coefficient.
摘要:
A light-emitting diode (LED) (110) includes a chip body (113), an encapsulation can (115) surrounding the chip body, and a base (111) supporting the encapsulation can and the chip body thereon. A diffraction grating (117) is provided at a surface of the encapsulation can, and the encapsulation can is made of a piezoelectric material for widening radiation angles of light beams emitted from the chip body. With the diffraction grating and the piezoelectric encapsulation can, light beams from the chip body are diffracted and attain wider radiation angles. A backlight system (100) includes a light guide plate (120), and a number of the above-described LEDs disposed adjacent to the light guide plate. Light beams having wide radiation angles are emitted from the LEDs and enter the light guide plate. This enables a light-emitting surface (122) of the light guide plate to have highly uniform brightness.
摘要:
A back light system (2) includes a light guide plate (50). The light guide plate includes an array of prisms (55) formed thereon, and a nano-particle layer (80) formed on the prisms for diffusing light beams propagating therethrough. The nano-particle layer contains a mass of transparent nano-particles with diameters preferably in the range from 30˜100 nm. A material of the particles may be TiO2 (titanium oxide), SiO2 (silicon dioxide), or Al2O3 (aluminum oxide). Each light beam passing through the nano-particle layer is scattered, and most of the scattering occurs over a limited range of angles. The scattered light beams exit the nano-particle layer mostly over the limited range of angles, with a medial direction of propagation in the range of angles being substantially parallel to a viewing direction. The back light system can yield high brightness and uniform luminescence, and is relatively simple in construction and inexpensive.
摘要:
A light guide plate (20) has a light incidence surface (221) for receiving light, a light emitting surface (223) for emitting light, and a bottom surface (222). The light emitting surface has a plurality of diffraction grating units. Each diffraction grating unit has a strong diffractive portion and a weak diffractive portion. In each diffraction grating unit, grating directions of the strong and weak diffractive portions are orthogonal to each other. Area ratios of the strong diffractive portions in the diffraction grating units progressively increase with increasing distance away from the light incidence surface. The grating directions of the strong diffractive portions may vary according to the locations of the diffraction grating units relative to a light source. These features improve the overall efficiency of utilization of light, and enable the light emitting surface to output highly uniform light.
摘要:
The present invention provides a light guide plate (500) including a transparent plate (220) having an emitting surface (524) with a plurality of hemispherical embossments (540) formed thereon continuously side-by-side in rows and columns. The transparent plate also has a bottom surface (226) opposite to the emitting surface, with a plurality of hemispherical embossments (260) formed on the bottom surface. The embossments of the emitting and bottom surfaces all face in a direction away from the transparent plate. Other embodiments are also provided.
摘要:
A lithium ion battery includes a cathode (10) having a plurality of nanoparticles of lithium doped transition metal alloy oxides represented by the formula LixCoyNizO2, an anode (20) having at least one carbon nanotube array (22), an electrolyte, and a membrane (30) separating the anode from the cathode. The carbon nanotube array includes a plurality of multi-walled carbon nanotubes (23). Preferably, an average diameter of an outermost wall of the multi-walled carbon nanotubes is in the range from 10 to 100 nanometers, and a pitch between adjacent multi-walled carbon nanotubes is in the range from 20 to 500 nanometers. In the carbon nanotube array, the lithium ions are able to intercalate not only inside the multi-walled carbon nanotubes, but also in the interstices between adjacent multi-walled carbon nanotubes. Thus a density of intercalation of the carbon nanotube array is significantly higher than that of graphite.
摘要翻译:锂离子电池包括阴极(10),阴极(10)具有多个掺杂有锂的过渡金属合金氧化物的纳米颗粒,所述氧化物由下式表示:式Li x Si x Ni 具有至少一个碳纳米管阵列(22)的阳极(20),电解质和将阳极与阴极分隔开的膜(30)的阳极(20)。 碳纳米管阵列包括多个多壁碳纳米管(23)。 优选地,多壁碳纳米管的最外壁的平均直径在10至100纳米的范围内,相邻多壁碳纳米管之间的间距在20至500纳米的范围内。 在碳纳米管阵列中,锂离子不仅可以插入多壁碳纳米管内部,而且也可以插入到相邻的多壁碳纳米管之间的间隙中。 因此,碳纳米管阵列的嵌入密度明显高于石墨。
摘要:
A surface light source (3, 4, 5) includes a light guide plate (32, 42, 52), which defines an incident surface (321, 421, 521), an emitting surface and a bottom surface (323, 423, 523) opposite to the emitting surface; and a light source (31, 41, 51) adjacent to the incident surface of the light guide plate for radiating light beams into the light guide plate through the incident surface. A multiplicity of generally rectangular dots (328, 428, 528) and generally circular dots (329, 429, 529) is formed on the bottom surface of the light guide plate. The rectangular and circular dots reflect and scatter the light beams in directions toward the emitting surface. The rectangular dots are distributed on the bottom surface corresponding to lower luminance areas of the light guide plate, so that the luminance over the whole emitting surface of the light guide plate is uniform.
摘要:
A backlight module (2) includes a light source (66) and a light guide plate (20), the light guide plate includes a light incidence surface (25), a light-emitting surface (21) adjacent to the light incidence surface; and a bottom surface (22) opposite to the light-emitting surface, the bottom surface includes a plurality of curved grooves (23), the light-emitting surface includes a plurality of grooves (24). In the backlight module, because of the curved grooves of the bottom surface and the grooves of the light-emitting surface, light beams entering the light guide plate are concentrated at the bottom surface and light-emitting surface, thus the surface light beams outputting from the light-emitting surface have a rather higher brightness.
摘要:
A light-transmitting element (10) includes a substrate (12) made of polymethyl methacrylate, and at least one coating film (14). The substrate has a first surface (122), and a second surface (124) opposite to the first surface. The coating film is deposited on at least one of the surfaces of the substrate by electron beam evaporation. The coating film is selected from the group consisting of a single layer and a plurality of layers, and comprises a material selected from the group consisting of tantalum pentoxide, magnesium fluoride, silicon oxide, and any mixture or combination thereof. The light-transmitting element provides improved light transmittance for an imaging system. A method for making the light-transmitting element is also provided.