31results about How to "Improve light transmission properties" patented technology

An optical element includes a first periodic structure portion being formed on a base portion and having a one-dimensional periodic structure in which a first medium and a second medium with a smaller refractive index than that of the first medium are alternately disposed in a first direction, and a second periodic structure portion being formed on the first periodic structure portion and having a periodic structure in which a third medium and a fourth medium with a smaller refractive index than that of the third medium are alternately disposed in the first direction. At an interface between the first and second periodic structure portions, a ratio of the first medium in the first periodic structure portion and a ratio of the third medium in the second periodic structure portion are different from each other. The element has a good form birefringence effect and a high reflection-suppressing effect.

This polarizing element is provided with a transparent substrate and lattice shaped protruding parts arranged at a pitch smaller than the wavelength of light in the region used on the transparent substrate and extending in a prescribed direction. The lattice shaped protruding parts include a reflective layer formed on the transparent substrate and grid tip parts which are formed such that the side surfaces thereof are inclined in the direction that the tip parts taper.

Provided are a polarizing plate having high transmittance characteristics and excellent controllability of reflectance characteristics, a method of manufacturing the polarizing plate, and an optical apparatus including the polarizing plate. A polarizing plate having a wire grid structure includes a transparent substrate and grid-shaped protrusions that are arranged on the transparent substrate at a pitch shorter than a wavelength of light in a use band and extend in a predetermined direction, the grid-shaped protrusion includes, in order from the transparent substrate side, a pedestal, a reflection layer, a dielectric layer, and an absorption layer, and the pedestal has a trapezoidal shape when viewed from the extending direction of the grid-shaped protrusions.

A driving method for a color liquid crystal display which drives the color liquid crystal display based on a video red signal, a video green signal and a video blue signal by independently applying a gamma compensation to a clamped video red signal, a clamped video green signal and a clamped video blue signal in gamma compensating circuits in order to make suitable to a red transmittance characteristic, a green transmittance characteristic and a blue transmittance characteristic. With this operation, it is possible to carry out an optimal gamma compensation suitable to a characteristic of the color liquid crystal display and to remove a gradation batter occurring in a specific color.

Provided is a dust-free diffusion plate for a liquid crystal display (LCD) manufactured by coating and drying a conductive material to a thickness of no more than 2D on a surface of the diffusion plate to prevent degradation of image quality due to dust build-up on the diffusion plate.

Provided is a light receiving device including a transparent electrode and a method of manufacturing the light receiving device. A transparent electrode is formed so as to be in contact with a photoelectric conversion layer which absorbs light to generate electric energy, and the transparent electrode is formed by using a resistance change material which has high transmittance with respect to light in the entire wavelength range and of which resistance state is to be changed from a high resistance state into a low resistance state if a voltage exceeding a threshold voltage inherent in the resistance change material so that conducting filaments are formed in the transparent electrode. Accordingly, since the transparent electrode has high transmittance characteristic with respect to the light in the entire wavelength range and high conductivity characteristic, the light receiving device also has high photoelectric conversion efficiency and good electric characteristics.

A dual-layer metal mesh strong electromagnetic shielding optical window possessing graphene interlayers and dual external absorption layers belongs to the optical transparent member electromagnetic shielding technology field. The core devices of the electromagnetic shielding optical window are first, second and third transparent absorption layers and a transparent reflection layer, the first and third transparent absorption layers are both composed of 1-6 layers graphene films separated by the transparent mediums, the second transparent absorption layer is composed of 1-3 layers of graphene films separated by the transparent mediums, and the metal meshes A and B form the transparent reflection layer. The first and third transparent absorption layers are placed at the two sides of the transparent reflection layer respectively, and the second transparent absorption layer is placed between the metal meshes A and B. The dual-layer metal mesh strong electromagnetic shielding optical window possessing the graphene interlayers and the dual external absorption layers solves the problem that a conventional transparent electromagnetic shielding method can not consider the low-electromagnetic reflection, the bidirectional strong electromagnetic shielding and the high light transmission simultaneously, and has the characteristics of high light transmission performance, bidirectional strong electromagnetic shielding and low electromagnetic reflection.

Provided is a polarizing plate having high transmittance characteristics and high durability.A polarizing plate 1 with a wire grid structure includes a transparent substrate 10, and a grid-shaped projecting portion 11 which is arranged on the transparent substrate 10 at a pitch shorter than a wavelength of light in a used bandwidth and extends in a predetermined direction. The grid-shaped projecting portion 11 includes a reflection layer 12, a dielectric layer 13, and an absorption layer 14 in this order from the side of the transparent substrate 10. A protection layer 15 is provided on a surface of the grid-shaped projecting portion 11, and covers all of an upper surface and a side surface of the absorption layer 14 and all of a side surface of the dielectric layer 13, and at least a part of a side surface of the reflection layer 12. The protection layer 15 on the side surface of the reflection layer 12 is thinner than the protection layer 15 on the side surface of the absorption layer 14.

A bidirectional wave absorption transparent electromagnetic shielding device based on graphene meshes and transparent conductive films belongs to the optical transparent member electromagnetic shielding technology field and utilizes the different light transmission and microwave shielding characteristics performed by the graphene mesh films when the graphene mesh films have different mesh unit hole area ratios to organically combine the low-reflection and partial absorption microwave characteristics of the graphene mesh films with the strong electromagnetic reflection characteristics of the high-light transmission conductive films, and the graphene mesh films are placed at the two sides of the transparent conductive films, thereby forming a multilayer structure. The transparent conductive films are used as the transparent reflection layers, and N layers of graphene mesh films separated by the transparent mediums are used as the transparent absorption layers. By the structure, the radio frequency radiation coming from the two sides can penetrate the transparent absorption layers simultaneously and repeatedly to be absorbed strongly, so that the strong shielding and low-reflection characteristics are realized, and the visible light has a high light transmission rate by transmitting the multilayer structure once. The electromagnetic shielding optical window solves the problem that a conventional transparent electromagnetic shielding method can not consider the bidirectional low-electromagnetic reflection, the strong electromagnetic shielding and the high light transmission simultaneously.

The invention, which belongs to the technical field of electromagnetic shielding of an optical transparent element, provides a graphene / double-layer-metal-mesh--included transparent electromagnetic shielding device with a bidirectional wave absorbing effect. The electromagnetic shielding device employs a metal mesh A and a metal mesh B as transparent reflection layers; 1 to 6 layers of graphene films separated by transparent mediums are used as transparent absorption layers A and B; and the transparent absorption layers A and B are arranged at the two sides of transparent reflection layers. On the basis of organic combination of low reflection and partial microwave absorption characteristics of the graphene film with the strong electromagnetic reflection characteristic of the high-light-transmittance dual-layer metal mesh, radio-frequency radiation at two sides of the device can pass through the absorption layers by multiple times and thus can be absorbed strongly to realize bidirectional strong shielding and low reflection characteristics and visible light only passes through the multi-layer structure once to realize high light transmittance. With the electromagnetic shielding device, problems that bidirectional strong electromagnetic shielding, high light transmission and low electromagnetic reflection can not be realized simultaneously by the existing transparent electromagnetic shielding method can be solved; and thus the electromagnetic shielding device has characteristics of bidirectional high light transmittance, strong electromagnetic shielding, and low electromagnetic reflection.

A dual-layer metal mesh strong electromagnetic shielding optical window possessing graphene interlayers and dual external absorption layers belongs to the optical transparent member electromagnetic shielding technology field. The core devices of the electromagnetic shielding optical window are first, second and third transparent absorption layers and a transparent reflection layer, the first and third transparent absorption layers are both composed of 1-6 layers graphene films separated by the transparent mediums, the second transparent absorption layer is composed of 1-3 layers of graphene films separated by the transparent mediums, and the metal meshes A and B form the transparent reflection layer. The first and third transparent absorption layers are placed at the two sides of the transparent reflection layer respectively, and the second transparent absorption layer is placed between the metal meshes A and B. The dual-layer metal mesh strong electromagnetic shielding optical window possessing the graphene interlayers and the dual external absorption layers solves the problem that a conventional transparent electromagnetic shielding method can not consider the low-electromagnetic reflection, the bidirectional strong electromagnetic shielding and the high light transmission simultaneously, and has the characteristics of high light transmission performance, bidirectional strong electromagnetic shielding and low electromagnetic reflection.

Provided are a polarizing plate having high transmittance characteristics and excellent controllability of reflectance characteristics, a method of manufacturing the polarizing plate, and an optical apparatus including the polarizing plate. A polarizing plate having a wire grid structure includes a transparent substrate and grid-shaped protrusions that are arranged on the transparent substrate at a pitch shorter than a wavelength of light in a use band and extend in a predetermined direction, the grid-shaped protrusion includes, in order from the transparent substrate side, a reflection layer, a dielectric layer, and an absorption layer, a width of the reflection layer is smaller than a width of the dielectric layer, and a grid tip formed at a tip of the grid-shaped protrusion has a tapered shape where a side face thereof is inclined in such a direction that a width thereof is decreased toward a tip side when viewed from the predetermined direction.

The invention discloses an organic electroluminescent display assembly and process for manufacturing the same, wherein the organic electroluminescent display assembly comprises a glass substrate, an optical compensation film formed on the surface of the glass substrate, an anode conductive layer formed on the surface of the optical compensation film, a laminated structure formed on the surface of the anode conductive layer and composed of organic material, and a cathode conductive layer formed on the surface of the laminated structure. The assembly according to the invention can increase the light transmission of the organic electroluminescent display assembly to specific wavelength range to around 90%.

A bidirectional wave absorption strong electromagnetic shielding optical window of a multilayer graphene mesh / metal mesh laminated structure belongs to the optical transparent member electromagnetic shielding technology field. The electromagnetic shielding optical window utilizes the different light transmission and microwave shielding characteristics performed by the graphene mesh films when the graphene mesh films have different mesh unit hole area ratios to organically combine the low-reflection and partial absorption microwave characteristics of the graphene mesh films with the strong electromagnetic reflection characteristics of the high-light transmission dual-layer metal meshes, and the multilayer graphene mesh films are placed at the two sides of the dual-layer metal meshes to form a multilayer structure. The dual-layer metal meshes separated by the graphene mesh films are used as the transparent reflection layers, and the graphene mesh films separated by the transparent mediums are used as the transparent absorption layers. By the structure, the radio frequency radiation at the two sides of the optical window can penetrate the absorption layers simultaneously and repeatedly to be absorbed strongly, so that the bidirectional strong shielding and low-reflection characteristics are realized, the visible light has a high light transmission rate by transmitting the laminated structure once. The electromagnetic shielding optical window solves the problem that a conventional transparent electromagnetic shielding method can not consider the bidirectional low-electromagnetic reflection, the strong electromagnetic shielding and the high light transmission simultaneously.

The invention provides a graphene mesh / double-layer metal mesh transparent electromagnetic shielding device having a bidirectional wave-absorbing effect, belongs to the technical field of optical transparent part electromagnetic shielding, the electromagnetic shielding device utilizes different light-transmitting and microwave shielding characteristics which are shown when a graphene mesh film has different mesh unit hole area ratios, characteristics of low reflection and partial absorption of microwaves of the graphene mesh film and a strong electromagnetic reflection characteristic of a high-light-transmitting double-layer metal mesh are organically combined, and the multilayer graphene mesh film is arranged at two sides of the double-layer metal mesh to form a multilayer stacked structure; the double-layer metal mesh is used as a transparent reflecting layer, and N layers of graphene mesh films separated by transparent mediums are used as transparent absorbing layers; the structure can enable radio frequency radiation at two sides of the device to pass through the absorbing layers for many times to be strongly absorbed, bidirectional strong shielding and low reflection characteristics are realized, and visible light only penetrates through the stacked structure only once and a high light transmittance is achieved; and the electromagnetic shielding device solves the problem that an existing transparent electromagnetic shielding method cannot give consideration to bidirectional low electromagnetic reflection, strong electromagnetic shielding and high light transmittance at the same time.

A polarizing element includes: a transparent substrate; and grid-shaped convexities that are arranged on the transparent substrate at a smaller pitch than a wavelength of operating band light and that extend in a specific direction. The grid-shaped convexities include a reflection layer formed on the transparent substrate and grid tips formed with side surfaces that, when viewed in the specific direction, are inclined in a direction of tip tapering.

A dual-layer metal mesh electromagnetic shielding optical window possessing graphene mesh interlayers belongs to the optical transparent member electromagnetic shielding technology field and utilizes the different light transmission and microwave shielding characteristics performed by the graphene mesh films when the graphene mesh films have different mesh unit hole area ratios to organically combine the low-reflection and partial absorption microwave characteristics of the graphene mesh films with the strong electromagnetic reflection characteristics of the high-light transmission conductive films, thereby forming a multilayer structure. The dual-layer metal mesh electromagnetic shielding optical window is formed by assembling a first transparent absorption layer, a transparent medium A, a metal mesh A, a transparent medium B, a second transparent absorption layer, a transparent medium C and a metal mesh B which are orderly laminated and parallelly configured. The first transparent absorption layers is composed of N layers of graphene mesh films separated by transparent mediums, the second transparent absorption layers is composed of 1-6 layers of graphene mesh films separated by transparent mediums, and the metal meshes A and B form a transparent reflection layer. The dual-layer metal mesh electromagnetic shielding optical window possessing the graphene mesh interlayers of the present invention solves the problem that a conventional transparent electromagnetic shielding technology can not consider the low-electromagnetic reflection, the strong electromagnetic shielding and the high light transmission simultaneously, and has the characteristics of high light transmission performance, strong electromagnetic shielding and low electromagnetic reflection.

An electromagnetic shielding optical window possessing dual graphene absorption layers and a dual-layer metal mesh structure belongs to the optical transparent member electromagnetic shielding technology field and is formed by assembling a first transparent absorption layer, a transparent medium A, a metal mesh A, a transparent medium B, a second transparent absorption layer, a transparent medium C and a metal mesh B which are orderly laminated and parallelly configured. The first transparent absorption layers is composed of 1-6 layers of graphene mesh films separated by transparent mediums, the second transparent absorption layers is composed of 1-3 layers of graphene mesh films separated by transparent mediums, and the metal meshes A and B form a transparent reflection layer. The electromagnetic shielding optical window of the present invention solves the problem that a conventional transparent electromagnetic shielding technology can not consider the low-electromagnetic reflection, the strong electromagnetic shielding and the high light transmission simultaneously, and has the characteristics of high light transmission performance, strong electromagnetic shielding and low electromagnetic reflection.

A preparation method of an alpha phase gallium oxide film, comprising the following steps: cleaning an m-plane sapphire substrate, drying it and placing it in a substrate tray; loading the substrate into a vacuum chamber, and waiting for the vacuum degree of the vacuum chamber to reach 3× After 10-6 Pa, high-purity argon gas was introduced, the gas flow was controlled at 40 sccm, and the vacuum degree of the vacuum chamber was adjusted to 1Pa; for high-purity Ga 2 O 3 The ceramic target was pretreated; the film was deposited on the substrate by magnetron sputtering, the substrate temperature was 25 degrees Celsius, the radio frequency power was set to 40W, and the deposition time was 2 hours; the prepared film was placed in a tube furnace Perform post-annealing treatment, the post-annealing temperature is 500-800 degrees Celsius, and the annealing time is 2 hours. The alpha phase gallium oxide thin film prepared by the method of the invention has a large deposition area and uniform particle size distribution.