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113results about How to "Prevent moiré" patented technology

Display device and electronic equipment

The embodiment of the invention discloses a display device and electronic equipment. The display device includes: a fingerprint identification module, which includes a plurality of fingerprint identification units; and a light collimation film layer, which is located on the fingerprint identification module, includes at least one first medium layer and at least one second medium layer arranged ina spacing and layer stacking manner, and is used to enable fingerprint reflecting light in a set incidence angle to be transmitted and transmittance to be greater than or equal to preset transmittance, wherein the first medium layer and the second medium layer are different in thickness and refractive indexes, n1*d1=n2*d2, n1 is the refractive index of the first medium layer, n2 is the refractiveindex of the second medium layer, d1 is the thickness of the first medium layer, and d2 is the thickness of the second medium layer. In the embodiment of the invention, the light collimation film layer is arranged on the fingerprint identification module, and can reduce a loss of the light transmittance, avoid generation of moire, reduce crosstalk signals of fingerprint identification, improve accuracy and precision of fingerprint identification, and realize a needed light collimation effect.
Owner:SHANGHAI TIANMA MICRO ELECTRONICS CO LTD

Manufacturing method of light source module, optical plate, and master mould and sub-mould of the optical plate

The invention discloses a manufacturing method of a light source module, an optical plate, and a master mould and a sub-mould of the optical plate. The optical plate comprises a substrate, a plurality of first microstructures, a plurality of second microstructures and a plurality of third microstructures. The substrate has a first area, a second area and a third area, and the second area is between the first area and the third area. A plurality of the first microstructures are arranged on a surface of the substrate in the first area at a predetermined spacing. A plurality of the second microstructures are arranged on the surface of the substrate in the second area. A plurality of the second microstructures have paired mutual connection at least, and a connection and the surface of the substrate are coplanar. A plurality of the third microstructures are arranged on the surface of the substrate in the third area, and a plurality of the third microstructures have paired partial superposition at least; wherein, the first microstructures, the second microstructures and the third microstructures have circular arc-shaped tips respectively. The method can help prevent moire generation, provide uniform and concentrated beams and be used for manufacturing a concaved microstructure mould and a convex microstructure mould with circular arc-shaped tips, and the optical plate with high light extraction efficiency.
Owner:AU OPTRONICS CORP

Raster graphic film, three-dimensional optical grating and naked eye 3D display device

ActiveCN104459856AStereoscopic image quality is highGood effectDiffraction gratingsGraphicsGrating
The invention discloses a raster graphic film, a three-dimensional optical grating and a naked eye 3D display device. Multiple sets of light-transmitting area repetitive units are periodically arranged on the raster graphic film in the transverse direction. Each light-transmitting area repetitive unit comprises multiple lines of light-transmitting areas which are sequentially arranged. The intervals between the adjacent light-transmitting areas on the raster graphic film are equal. The light-transmitting areas are arranged in an inclined mode by a preset angle in the longitudinal direction of the raster graphic film. Each light-transmitting area comprises a plurality of light-transmitting structures which are connected together and have the same shape and size. A preset distance exists between the vertical arrangement positions of every two adjacent lines of light-transmitting areas in the same light-transmitting area repetitive unit. By means of the light-transmitting areas which are periodically arranged in a staggered mode, the phenomenon of moire fringes formed between a black matrix and an optical grating of a 2D display screen is thoroughly avoided through the naked eye 3D display device, the three-dimensional image quality of the naked eye 3D display device is higher, and the effect of the naked eye 3D display device is better.
Owner:深圳市TCL高新技术开发有限公司

Display substrate and preparing method thereof and display panel

The invention provides a display substrate and a preparing method thereof and a display panel, and relates to the technical field of displaying. The quantity of mask plates in the display substrate preparing process can be decreased. The preparing method includes the steps that a plurality of first shading strips and a plurality of second shading strips intersecting with the first shading strips are formed on a substrate to obtain a black matrix pattern; a plurality of first touch electrode strips are formed on the substrate, wherein orthogonal projection of the first touch electrode strips and orthogonal projection of the first shading strips are overlapped on the substrate; a first insulating layer covering the multiple first touch electrode strips is formed on the substrate; a plurality of second touch electrode strips are formed on the substrate, wherein orthogonal projection of the second touch electrode strips and orthogonal projection of the second shading strips are overlapped on the substrate; a second insulating layer covering the multiple second touch electrode strips is formed on the substrate; the multiple first shading strips and the multiple first touch electrode strips are exposed and obtained through first mask plates; the multiple second shading strips and the multiple second touch electrode strips are exposed and obtained through second mask plates.
Owner:BOE TECH GRP CO LTD +1

Prism piece and backlight mould

The invention discloses a prism piece which comprises a main body part and multiple prisms positioned on the main body part, wherein the upper surface of the main body part is provided with a symmetrical shaft, the main body part is divided into a first region and a second region which are mutually symmetrical, and the prisms on the two regions are symmetrical relative to the symmetrical shaft; in the first region, each prism comprises a first side face approaching to the edge which is parallel to the symmetrical shaft in the first region and a second side face far from the edge; and in a section from the edge to the interior of the first region, an included angle formed by the first side face and the upper surface of the main body part is gradually increased. The prisms provided by the invention are arranged in an inclined structure, so that the spotlight effect of the prism piece at a center watching position region is improved; after the prism piece is applied to a backlight source, the whole performance index of the backlight source is improved, and thus, the brightness of a display on the center watching position is improved; an irregular structure of each prism is arranged, so that generation of Mohr grain; and a light guide plate is combined with an inverse edge eyeglass, and the surface of each prism is a horizontal plane, so that the abrasion of the prism piece is effectively prevented, and the assembly is convenient.
Owner:BOE TECH GRP CO LTD +1

Liquid crystal lens, stereo display method and stereo display device

The invention discloses a liquid crystal lens, a stereo display method and a stereo display device. The stereo display method is applied to the stereo display device comprising the liquid display lens. The liquid display lens comprises a plurality of parallel first electrodes, a plurality of second electrodes which are arranged in parallel and different from the first electrodes in terms of extending direction, and liquid crystals filled between the first electrodes and the second electrodes. The method comprises the steps that at least one set of voltage distributed in the shaped of V in the preset direction or at least one set of voltage distributed in the shape of reversed V in the preset direction is exerted between the first electrodes and the second electrodes covering a three-dimensional display area, and the voltage which is distributed in the shape of V or distributed in the shape of reversed V is wholly or partially larger than the threshold voltage of the liquid crystals. Threshold voltage which is smaller than that of the liquid crystals or voltage which is larger than the saturation voltage of the liquid crystals is exerted between the first electrodes and the second electrodes covering a two-dimensional display area. The stereo display device can achieve the three-dimensional display effect and the two-dimensional display effect in a blended mode.
Owner:SUPERD CO LTD

Virtual micro-classroom performance broadcasting system and device

The invention discloses a virtual micro-classroom performance broadcasting system, and relates to the technical field of performance broadcasting. The system comprises an intelligent blackboard, a high-definition camera, a reverse viewing system, an audio acquisition device, a virtual and real performance recording and broadcasting system and a resource management platform, wherein the intelligentblackboard is used for a teacher to play teaching PPT for teaching explanation; the high-definition camera is used for recording PPT played by the intelligent blackboard and teacher images; the audioacquisition device is used for acquiring the voice of teachers; the audio acquisition device is used for being connected with a wireless audio system; and the output end of the wireless audio systemis connected with the virtual and real performance recording and broadcasting system. The virtual and real performance recording and broadcasting system comprises a screen recording and image mattingmodule and an image matting synthesis module; and the virtual and real performance recording and broadcasting system is connected with the resource management platform. According to the invention, bydesigning a set of true three-dimensional micro-class MOOC system, high-quality recording and packaging are completed quickly, heavy class recording tasks are greatly reduced, and the quality and appreciation of video courseware are improved.
Owner:安徽文香科技股份有限公司
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