38results about How to "Uniform outgoing light" patented technology

A high-efficiency LED provided with a surface micro-column array structure and based on diffraction effect has a structure below: N type GaN grows on a cushioning layer of a sapphire substrate. A GaN active layer grows on the N type GaN layer. A P type GaN layer grows on the active layer. A micro-column array is etched on the P type GaN layer, which can be periodically or aperiodiclaly arranged two-dimensional structure. A P type electrode and a P type bonding pad are laid on the P type GaN layer. An N type electrode and an N type bonding pad are arranged on the N type GaN layer. The present invention has the advantages that light diffusion effect is utilized and light is fully exported through the micro-column to improve lighting efficiency and ensure even light distribution on a light surface. Compared with LED adopting two-dimensional photonic crystal, the structure needs simple production technique and lower production cost. Compared with traditional LED suffering roughly processed surfaces, the structure brings much higher light emission efficiency.

The surface light source module based on light-emitting diodes belongs to the field of light-emitting diode packaging and application technology, and is characterized in that it includes light-emitting diodes and a light guide plate that diffuses the light emitted from the light-emitting diodes to a main exit surface, on which the main exit surface There are several light emitting guiding structures that protrude from the main emitting surface and extend in an approximate arc shape, and the arc is any kind of straight line or curve, which is based on the projection of the light emitting diode light source on the main emitting surface. The point is approximately central. The principal surface facing the liquid crystal layer in a liquid crystal display, or the plane used for illumination in an illuminating device are the main outgoing surfaces. The secondary packaging efficiency of the present invention reaches 80%, which is more than 30% higher than the highest level of current products; the ratio of the light intensity of the brightest point of the surface light source to the light intensity of the weakest point is 1.2, realizing uniform light output. It is used to manufacture a surface light source device with uniform light output, large light output area and high color rendering index.

The invention relates to an LED (Light Emitting Diode) illumination device comprising a light source substrate, a plurality of LED light sources, a light guide plate and a lampshade. The plurality of LED light sources are fixed on the light source substrate; the light guide plate is arranged inside the lampshade; a light-incident surface is formed at one end of the light guide plate and is arranged opposite to the LED light source; the light guide plate comprises two lateral surfaces both of which are reflection surfaces and respectively form a first curved surface and a second curved surface; and a plurality of projected or recessed dimming grains are arranged on at least one lateral surface of the light guide plate. Emergent lights of the LED light source entering from the light-incident surface are reflected and transmitted between two lateral surfaces of the light guide plate and are irradiated on the dimming grains to generate diffusion for light emergence; light beams emitting from the lateral surface of the light guide plate are irradiated on the inner surface of the lampshade and are finally emitted to outside through the lampshade. The invention can obtain even emergent lights through the light guide plate, improves the direct glaring effect of the LED light source and ensures that the LED illumination device has favorable irradiation angle.

The invention is a guide device, which is annular structure; it includes a top surface, a bottom surface relative to the top surface, an inner side surface and an external surface correspondent to the internal one. Parts of the external surface or the whole surface are the light incidence surface; the internal side surface is the emergent face.

The packaging structure for luminous diode and fluorescent powder colloid is dropped on pre-shaped depression condenser and setting the luminous diode fixed on base sheet into the depression. At the same time of setting, the surplus of fluorescent powder colloid is extruded out of the expression and fluorescent powder colloid film wrapped on the luminous diode can be finished after the fluorescent powder colloid is form-solidified. The thickness and shape of this film are controlled by pre-shaped depression so uniform colour temperature can be obtained as designed.

The invention is a light guide plate, comprising a light incident surface, a light outgoing surface adjacent to the light incident surface and a bottom surface opposite to the light outgoing surface, where the bottom surface comprises a plurality of arc grooves and the light outgoing surface also comprises a plurality of grooves.

The invention discloses a fluorescent ceramic and sapphire compound ceramic material and a preparation method thereof. The compound ceramic material comprises a fluorescent ceramic layer, a sapphire layer and a connecting layer, wherein the connecting layer is composed of non-continuous fluorescent particles obtained by dispersing glass and have components the same as that of the fluorescent ceramic layer. The connecting layer is used for connecting the fluorescent ceramic layer and the sapphire layer, and the layers are sintered at high temperature to obtain the compound ceramic material; theresponse wavelength of the fluorescent ceramic layer is 445 to 465nm; the connecting layer has a scattering effect on an excitation light source; the sapphire layer has high heat conductivity and hasa heat dissipation effect. According to the fluorescent ceramic and sapphire compound ceramic material, sapphire and fluorescent ceramic are used for constructing a compound structure, so that the heat conduction of the fluorescent ceramic is enhanced and a laser damage threshold value of the ceramic is improved; fluorescent powder has the effect of connecting the fluorescent ceramic and the sapphire, has a fluorescent property and is used for enhancing the luminescence; meanwhile, the scattering of the excitation light source is enhanced. The fluorescent ceramic and sapphire compound ceramicmaterial and the preparation method thereof have the advantages that a preparation technology is simple and the fluorescent ceramic and sapphire compound ceramic material is especially suitable for large-power and high-power-density laser illumination and display devices and other compact type devices.

The present invention relates to a backlight module and a LCD. The backlight module comprises a light guide plate. The light guide plate comprises a main body and an extension part formed by extending one end of the main body in the direction far away from the main body. The main body comprises a first side face parallel to the extension direction of the extension part; the extension part has a convex lug extend outwards from a horizontal plane where the first side face of the main body is arranged; the convex lug comprises a light entrance plane which is positioned at the adjacency part of the extension part and the main body; the extension part comprises at least one side face on which a reflection structure is arranged. The main body also comprises at least one light emitting diode arranged on one side of the light entrance plane, wherein, emergent light beams of the light emitting diode are radiated into the extension part from the light entrance plane, and are reflected by the side face provided with the reflection structure to form divergent light beams and enter the main body. The backlight module and the LCD are uniform in brightness.

The embodiment of the invention provides an array substrate, a display panel and a display device and relates to the technical field of display. By means of the array substrate, the display panel and the display device, the color cast phenomenon happening to a display panel can be overcome to a certain extent, and the display effect of the display panel can be improved. The array substrate comprises multiple pixel units which are marked out by grid lines and data lines which are arranged in an intersecting and insulated mode, and each pixel unit comprises a first area and a second area which are adjacent to each other; each first area comprises two or more first strip-shaped electrodes which are arranged in a first direction, and a first etching seam is formed between every two adjacent first strip-shaped electrodes; each second area comprises two or more second strip-shaped electrodes which are arranged in a second direction, and a second etching seam is formed between every two adjacent second strip-shaped electrodes; the ratio between the width of each first etching seam and the width of the corresponding first strip-shaped electrode is not equal to that between the width of each second etching seam and the width of the corresponding second strip-shaped electrode. The display panel can be applied to a liquid crystal panel of ADS display mode.

The invention provides a light-equalizing photoelectric separated type LED (Light Emitting Diode) pendant lamp with pendant chains and a mounting plate. The light-equalizing photoelectric separated type LED pendant lamp is mainly used for solving the problems of the present pendant lamp that the pendant chain distribution is unreasonable, the equilibrium is poor, the reliability is low, the height and the angle cannot be adjusted, the light intensity distribution in faculae formed by emergent light is uneven, the energy waste is easily caused, the pendant lamp cannot be used for a long time, a pendant lamp light source and a power supply are arranged in same positions on different sides of a pendant lamp shell, the light source and the power supply heat in a concentrated form and the faculae are nonadjustable. The light-equalizing photoelectric separated type LED pendant lamp with the pendant chains and the mounting plate is connected with the four pendant chains, is mounted in a mounting position through the mounting plate and further comprises a reflecting mirror and a reflecting cup, wherein two LED light sources are arranged.

The invention discloses a backlight module and a display device, comprising: a metal backboard, a plastic frame arranged around the edge of the metal backboard, and the metal backboard and the plastic frame form an accommodation space; the backlight module also includes a lamp board; a lamp board Located on one side of the metal backboard and in the accommodating space, the surface of the light board facing the metal backboard is provided with a first magnetic material layer; the first magnetic material layer adsorbs the metal backboard. The metal backboard is generally made of iron or iron alloy materials. The magnetic material has the property of attracting magnetic metals. When the light board is installed in the accommodation space formed by the metal backboard and the plastic frame, the first magnetic material layer can be directly adsorbed to the metal. back panel. The metal back plate and the optical film of the backlight module will be set in parallel, and the light board is closely attached to the metal back plate to ensure that the light mixing distance from the light source at each position on the light board to the optical film is consistent, thereby improving the light board. The light mixing uniformity of the upper light source makes the outgoing light of the backlight module more uniform.

The invention provides a bluelight LD multi-tooth reflective transmitting backlight module, structure wherein the outer side of a multi-tooth light reflecting system is tooth-shaped and furthermore a total-reflection film layer is plated on a non-light-emitting surface for reflecting light. When the light which is transmitted from a blue-light LD passes through the multi-tooth light reflecting system, the light is reflected to the tooth-shaped surface, thereby making the light be emitted out of the opposite surface of the tooth-shaped surface of the multi-tooth light reflecting system. A transparent jelly which is mixed with a red phosphor powder and a green phosphor powder is uniformly plated on the opposite surface, therefore the light activates the phosphor powders on the opposite surface in emitting out of the opposite surface and white light is obtained through mixing and output. The output white light enters a back board, and horizontally incident light is vertically output uniformly under the specific effect of a light guide board in the back board. Furthermore a purpose of back board illumination is realized. The bluelight LD multi-tooth reflective transmitting backlight module has advantages of simple structure, small size, small weight, compact structure, low equipment investment, simple production process and high product yield rate.