41results about How to "Increase the mixing distance" patented technology

The invention discloses a backlight module and a display device. Light-emitting surfaces of lateral emitting type backlight sources are changed to deviate from a backlight display region from an existing manner of facing the backlight display region, and a light guide part is arranged at an edge of a non-display region of a light guide plate; light which is transmitted in the light guide part andis emitted by the lateral emitting type backlight sources is reflected to the light guide plate through a reflecting part which is arranged on a first surface, opposite to a light emitting surface, ofthe light guide part, so that a light guide function of the backlight module is realized. Compared with an existing backlight module structure, on the basis of taking a distance between a side face facing the backlight display region of the existing lateral emitting type backlight sources and a boundary, close to the lateral emitting type backlight sources, of the backlight display region as a light mixing distance under the condition of ensuring a narrow edge frame structure design, the following light mixing distances are increased: a maximum distance between the light emitting surfaces ofthe two lateral emitting type backlight sources and the first surface, and the length of the lateral emitting type backlight sources in the direction vertical to the light emitting surfaces; the glowworm effect is easily improved under a narrow edge frame.

A display device includes a display panel having an active display area, an optical film set, a light source module, and a frame. The light source module includes a light guide plate (LGP) and a light source adjacent to a side surface of the LGP. The optical film set is located between the display panel and the LGP. The frame disposed between the LGP and the optical film set extends to the LGP and covers a portion of the LGP. The frame has a first surface carrying the optical film set, a second surface facing to the light emitting surface, and a chamfered inclined surface. The chamfered inclined surface is within the active display area and connects the first and second surfaces. An extending distance of the first surface in the active display area is smaller than an extending distance of the second surface in the active display area.

The invention relates to a LCD and the backlight module thereof. And the LCD comprises a backlight module and a LCD panel, the backlight module comprises a first light source, a first lighting cavity, at least a first optical fiber and a first light guide plate; the first lighting cavity has a first orifice, the first light source is held in the first lighting cavity; one end of the first optical fiber is connected with the first orifice; the first light guide plate is arranged at the other end of the optical fiber; and the LCD panel is adjacent to one side of the first light guide plate.

The invention provides a backlight module, a display and a manufacturing method of a reflecting cover of the backlight module. The backlight module comprises a light guide plate, a reflecting cover and a plurality of point light sources. The light guide plate is provided with a light incident surface, and the reflecting cover is arranged on the light incident surface. The reflecting cover comprises a reflecting part. The point light sources are used for respectively providing light rays for the reflecting part, and the reflecting part is used for reflecting the light rays to the light incident surface. Because the light rays can enter the light guide plate only by being reflected by the reflecting cover, the uniformity degree of an area light source provided by the backlight module can be improved.

The invention discloses a display device. The display device comprises a micro LED lamp panel and an angle selection layer located on the light-emitting side of the micro light-emitting diode lamp panel, the angle selection layer reflects light in a first incident angle range and transmits light in a second incident angle range, and an incident angle value corresponding to the first incident anglerange is smaller than an incident angle corresponding to the second incident angle range. A light reflecting layer on the micro light-emitting diode lamp panel can perform diffuse reflection on lightreflected by the angle selection layer and input the light to the angle selection layer again, so that the diffusely reflected light with the second incident angle is transmitted, the light with thefirst incident angle continues to repeat reflection, and finally, the light intensity distribution of a backlight module is uniform.

The invention discloses a surface light source which comprises a light guide plate and a light source device. The light guide plate comprises a platy body and at least one prism, the platy body is provided with an incident side surface, a reflecting side surface, a bottom surface and an emergent surface, the reflecting side surface is opposite to the incident side surface, the emergent surface is opposite to the bottom surface, the incident side surface and the reflecting side surface are respectively connected with the bottom surface and the emergent surface, and the height of the incident side surface, the height of the reflecting side surface and the thickness of the platy body are approximately identical to one another. The prisms are configured on the bottom surface of the platy body and are provided with first planes and second planes, the first planes and the second planes are abutted to one another, an included angle between each first plane and the bottom surface of the platy body is smaller than an included angle between each second plane and the bottom surface of the platy body, and the shortest distance from the first planes to the incident side surface is shorter than the shortest distance from the second planes to the incident side surface. The light source device is adjacent to the incident side surface. The surface light source has the advantage of excellent emergent light uniformity.

The invention provides a direct type backlight module which comprises a backplane, a plurality of backlight sources arranged in the backplane and a diffusion plate arranged above the backplane. The backplane comprises a baseplate, a side plate connected on the side edge of the baseplate and a plurality of installation units arranged on the baseplate, wherein each of the installation units is provided with a first inclined plane and a second inclined plane which is in the opposite inclined direction to the first inclined plane; the backlight sources are arranged on the first inclined plane and the second inclined plane respectively, so that the backlight sources are in inclined arrangement relative to the diffusion plate. According to the direct type backlight module, the installation unit provided with the first inclined plane and the second inclined plane is arranged on the baseplate of the backplane, and the backlight sources are arranged on the first inclined plane and the second inclined plane of the installation unit, so that the backlight sources are arranged in an inclined way relative to the diffusion plate so as to increase the mixed light distance and improve the illumination intensity and uniformity, and meanwhile, the number of LED (light-emitting diode) lights in use is reduced, the production cost is lowered; and moreover, the the backlight module can be thinned easily.

The present invention is a backlight module including a housing, a reflective sheet, and a light source module. The housing has an inner side surface, an outer side surface, and a plurality of first openings. The reflective sheet is disposed on the inner side surface and has a plurality of second openings corresponding to the first openings. The light source module has a plurality of light sources, wherein the light source module is disposed on the outer side surface, and each of the light sources may penetrate each of the first openings and the second openings. When the light sources are dimmed or have other problems, the light source module can be taken apart from the housing to repair them easily.

The invention relates to the field of liquid crystal display technologies. The backlight module provided by the invention sequentially comprises a printed circuit board, a first reflection plate, LED light sources, light guide plates, a diffusion plate and an optical diaphragm from the bottom up. Each light guide plate is of a rectangular structure with thin periphery and thick center, and is buckled on the corresponding LED light source via a groove at the center, and bumps are arranged on a first light reflection plane and a second light reflection plane of the light guide plate, so that mixing distance of light rays entering the light guide plate is increased, and thus the light rays are more uniformly distributed, generation of a dark space is avoided, and thin design of the liquid crystal display is facilitated; the LED light source and the light guide plate are on one-to-one correspondence, regional dimming is facilitated, and becomes more accurate during rectangular light emitting surfaces formed by the light guide plates; meanwhile, a use ratio of the light sources is further improved due to the arrangement of a third reflection plate. According to the liquid crystal display including the backlight module provided by the invention, regional dimming can be accurately achieved, and the thin design is also achieved.

The invention discloses a direct type backlight module. The direct type backlight module comprises a backboard, a backlight source, a diffuser plate and an optical film layer. The backboard comprises a bottom board and side boards connected to the bottom board, and a backlight cavity is formed by the side boards and the bottom board. The diffuser plate is arranged on the side boards, and the optical film layer is arranged on the diffuser plate. The backlight source is arranged on the bottom board of the backboard and contained in the backlight cavity. The bottom board of the backboard is a free curved face, and the radian of the free curved face of the bottom board is adjusted according to the light mixing distance of the backlight source. The bottom board of the backboard of the direct type backlight module is the free curved face, the light-emitting pointing direction of the backlight source is adjusted through the radian of the curved face of the bottom board, and it is avoided that the pointing direction of the maximum light intensity of the backlight source is directly perpendicular to the backlight module, bad optical goods phenomena such as the firefly effect are avoided, meanwhile, the light mixing distance is increased, the needed thickness of the backlight cavity is reduced, and the backlight module can be lighter and thinner.

The invention discloses a backlight module and a display device with the same. The backlight module includes a surface light source, a fluorescent film, a supporting layer and a diffusion sheet, wherein the surface light source is provided with a light emitting surface, the light-emitting surface of the surface light source is coated with the fluorescent film, the supporting layer is arranged on the fluorescent film, and the supporting layer is a transparent adhesive film layer; and the supporting layer is coated with the diffusion sheet. According to the backlight module and the display device with the same, under premise of ensuring higher lighting effect, the number of layers of the diffusion sheet in the backlight module is reduced, the transmittance of light is increased, thus a better light mixing effect and an efficient light-emitting effect are realized, and the purposes of uniform light mixing and thinning of the backlight module are achieved.

The invention discloses an ultrathin direct type backlight module which comprises a plurality of circular truncated cones, a plurality of sections of reflection partition plates, LED lamp beads, a circular cone, a base plate and a frame; the circular truncated cones, the circular cone and the reflection partition plates are all arranged on the base plate, and the base plate and the surface of theframe are both reflectors; the LED lamp beads are placed on the side faces of the circular truncated cones, the inclination angles of the circular truncated cones and the diameter of the bottom face are changed, the direction of the high light intensity of an LED chip is regulated, the light uniform difficulty is lowered, light is distributed again through the structures such as the circular truncated cones, the circular cones and the reflection partition plates, the light energy utilization rate and the brightness uniformity are improved, and the light mixing height is lowered. The thicknessof a liquid crystal display is lowered, no optical lens is needed, and therefore the machining and installing difficulty are lowered, and the cost is saved.

The invention relates to an LED light mixing device. The existing LED light mixing device does not conform to the tendency of thin appearance, and has low light outlet rate. The LED light mixing device of the invention comprises an illumination module. The invention is characterized in that the LED light mixing device also comprises a light guide plate, the light illumination module comprises a base plate, at least two kinds of single-color LED light sources are arranged on the base plate, the illumination module is arranged on the side surface of the light guide plate, the illumination direction of the LED light source faces the light guide plate, uniform notches or reflecting net points are formed on a lower panel of the light guide plate, and a diffusion film is arranged above the upper panel of the light guide plate. The invention reduces the integral thickness of the light mixing device, the emitting direction of partial LED light sources is changed through the light guide plate with the net points or the notches at the lower panel, the loss caused by light ray emitting from the lower panel of the light guide plate is avoided, and the light outlet rate is improved. Partial light rays are emitted out from the upper side of the light guide plate after being reflected for many times in the light guide plate, the light mixing distance of the LED light source is effectively increased in the period, and the light mixing effect is more uniform.

A back light module is prepared for setting the first light source near to the first light guide plate, arranging the first and the second slope surfaces on the first light guide plate, setting the first slope surface to be opposite to the second one, setting the second light guide plate at one side of the first one, arranging a concave unit on the second light guide plate and facing said concave unit to the first light guide plate. The light guide plate-set applied in said back light module is also disclosed.

Disclosed is a liquid crystal display device. The liquid crystal display device comprises a bottom case, an inner frame, a front frame, a liquid crystal display panel and a side light type backlight module. The bottom case comprises a bottom ball, a side wall extending from one outer edge of the bottom wall, a base wall extending inwards from the top end of the side wall, and a plurality of upper protrusion units extending upwards from the top surface of the base wall; the inner frame is integrated onto the bottom case to define a first accommodating space and provided with a plurality of through holes for the protrusion units to penetrate and a plurality of upwards-opened lower recess units; the front frame is arranged on the inner frame to define a second accommodating space and provided with a plurality of downwards-protruded lower protrusion units combined with the lower recess units; the liquid crystal display penal is arranged inside the second accommodating space; the side light type backlight module is arranged inside the first accommodating space and comprises a light strip, which is arranged on the side wall and faces inwards.

The invention discloses a backlight module and a liquid crystal display device. A backplate of the backlight module comprises a vertical plate body and an inclined plate body in an obtuse angle arrangement, wherein the vertical plate body and a liquid crystal display panel are distantly arranged in parallel; a light-guiding plate and a light source are arranged between the vertical plate body and the liquid crystal display panel; a reflective plate is arranged on the inner side of the inclined plate body; a plurality of lens and a plurality of dots are arranged on the emergent surface and the bottom surface of the light-guiding plate respectively. On the basis of the invention, an optical diaphragm for backlighting can be reduced and reduction in the backlighting cost is facilitated.

An LED package structure is disclosed, which comprises an LED chip and a frame for receiving the LED chip, and the frame comprises a bottom wall, a first sidewall and a light exiting wall. The LED chip is disposed on the bottom wall, the first sidewall is obliquely disposed in a light exiting direction of the LED chip, and light rays emitted from the LED chip are reflected by the first sidewall and then exit from the light exiting wall. An LCD device is further disclosed. According to the LCD device and the LED package structure thereof of the present disclosure, light rays emitted from the LED chip are reflected by the first sidewall and then exit from the light exiting wall. This can increase the light mixing distance for the LED chip and avoid occurrence of light emission blind areas, thus eliminating the hot spot phenomenon.

The invention discloses a direct type backlight module and a display device. The direct type backlight module comprises a back plate, a reflecting piece, a diffusion plate, multiple light sources anda lens arranged above the light sources in a covering manner. The back plate comprises a bottom plate and a side plate arranged around the bottom plate. A first cavity is formed between the bottom plate and the side plate. The first cavity is sealed by the diffusion plate. The reflecting piece is arranged on the bottom plate and the side plate. The light sources and the lens are located in the first cavity and are arranged on the side plate. The lens comprises a lattice point part and a smooth part opposite to the lattice point part, and the smooth part is close to the bottom plate. The lightmixing distance of light rays of the light sources of the direct type backlight module in the first cavity is greatly increased so that light energy of all the light sources can be sufficiently mixed,uniform energy distribution is formed on the diffusion plate finally, regional light spots are avoided, and therefore the ultrathin direct type backlight module can be achieved on the premise that cost is not increased.

The invention relates to the technical field of display devices, and provides a backlight module and a display device. The backlight module comprises a back plate unit and a light source unit, the back plate unit comprises a back plate, the back plate is provided with a light mixing cavity, and the light mixing cavity is used for mixing light generated by the light source unit; the light source unit comprises a diffusion substrate, a transparent electrode layer and a light source, the diffusion substrate is arranged on the side, provided with the light mixing cavity, of the back plate, the transparent electrode layer is arranged on the surface of the diffusion substrate, the light source is arranged on the surface of the transparent electrode layer, and the light-emitting face of the lightsource faces the back plate to ensure that light generated by the light source can irradiate the light mixing cavity; the light is mixed by the light mixing cavity and then is emitted from the backlight module; the light source is attached to the surface of the transparent electrode layer, and the light emitting surface of the light source faces the back plate, so that light rays generated by thelight source can irradiate the back plate and reach the diffusion substrate after being reflected by the back plate, the overall thickness of the backlight module can be reduced, and the number of lamp beads in the light source can be reduced.

The invention relates to the field of liquid crystal display technologies. The backlight module provided by the invention sequentially comprises a printed circuit board, a first reflection plate, LED light sources, light guide plates, a diffusion plate and an optical diaphragm from the bottom up. Each light guide plate is of a rectangular structure with thin periphery and thick center, and is buckled on the corresponding LED light source via a groove at the center, and bumps are arranged on a first light reflection plane and a second light reflection plane of the light guide plate, so that mixing distance of light rays entering the light guide plate is increased, and thus the light rays are more uniformly distributed, generation of a dark space is avoided, and thin design of the liquid crystal display is facilitated; the LED light source and the light guide plate are on one-to-one correspondence, regional dimming is facilitated, and becomes more accurate during rectangular light emitting surfaces formed by the light guide plates; meanwhile, a use ratio of the light sources is further improved due to the arrangement of a third reflection plate. According to the liquid crystal display including the backlight module provided by the invention, regional dimming can be accurately achieved, and the thin design is also achieved.

An LED package structure is disclosed, which comprises an LED chip and a frame for receiving the LED chip, and the frame comprises a bottom wall, a first sidewall and a light exiting wall. The LED chip is disposed on the bottom wall, the first sidewall is obliquely disposed in a light exiting direction of the LED chip, and light rays emitted from the LED chip are reflected by the first sidewall and then exit from the light exiting wall. An LCD device is further disclosed. According to the LCD device and the LED package structure thereof of the present disclosure, light rays emitted from the LED chip are reflected by the first sidewall and then exit from the light exiting wall. This can increase the light mixing distance for the LED chip and avoid occurrence of light emission blind areas, thus eliminating the hot spot phenomenon.

The invention discloses a straight-down type LED panel lamp. The straight-down type LED panel lamp comprises a shell, LED lamp beads, light mixing elements, a diffuse reflection base plate, a frame and a light emitting panel, wherein the LED lamp beads are arranged on the base plate, a light mixing element made of pmma is independently arranged above each LED lamp bead, and the diffuse reflection base plate is combined with the light emitting panel through the frame. According to the straight-down type LED panel lamp, light rays of the straight-down type LED panel lamp are continually reflected in the interior, with smaller thickness, of the lamp through the light reflecting surfaces of the light mixing elements and the diffuse reflection of a diffuse reflection back plate so as to achieve the purpose of increasing the mixing light distance, and therefore the uniformity of the lamp can be further improved on the premise of controlling the thickness of the lamp; and meanwhile, a hexagonal arrangement array of the LED lamp beads is adopted, and therefore the lamp has advantages that the light source density can be reduced so as to reduce the power consumption and the like.

The invention provides a light guide optical system capable of saving space and achieving uniform lighting and an automobile signal lamp thereof in the technical field of automobile lamps. The light guide optical system comprises a light source, and the light source is correspondingly arranged at the end of a light guide body; an inner lens is correspondingly arranged above the light conductor, and a light guide bracket is correspondingly arranged below the light conductor; the light guide body comprises light guide total reflection optical teeth and a light guide modeling total reflection surface, the light guide total reflection optical teeth are arranged on the light guide body, and the light guide total reflection optical teeth are arranged corresponding to the light incident surface of the inner lens; the light guide support is provided with a first diffusion optical pattern, and the first diffusion optical pattern is arranged corresponding to the light guide modeling total reflection surface. The problem that the lighting effect is not uniform due to the fact that the photoconductor is too close to the inner lens is solved, the effect of increasing the light mixing distance in a small space is achieved, meanwhile, the diffusion effect is added, and the uniform lighting effect is achieved.

The invention discloses an LED plant growth lamp. The LED plant growth lamp comprises a lamp shell, red LED lamp beads, green LED lamp beads, blue LED lamp beads, PMMA lamp bead light mixing elements, a diffuse reflection bottom plate and a diffuse type light outlet panel. The LED lamp beads are arranged on the diffuse reflection bottom plate, each LED lamp bead is provided with one light mixing element made of PMMA lamp beads, the side face of each light mixing element is a reflection face, the upper bottom face and the lower bottom face of each light mixing element are illuminating surfaces, and the light outlet panel is a diffusion plate. The LED light rays are subjected to diffuse reflection of the reflection faces of the light mixing elements and the diffuse reflection bottom plate, the purpose of increasing the light mixing distance is achieved through constant reflection in the lamp with the relatively small thickness, furthermore, the light mixing uniformity of the lamp is improved on the premise of controlling the thickness of the lamp, and therefore the LED plant growth lamp has the beneficial effects that the lamp can achieve the uniform light outlet effect under drive of different PMM waveforms.

The invention discloses an integrated LED light tube. A light holder is integrally formed by aluminum alloy through stretching, the two ends of the light holder are open, a containing space is arranged inside the light holder, and a driving power supply is arranged in the containing space. A mounting platform is arranged on the top portion of the light holder, a groove as deep as 3-6mm is formed in the middle portion of the mounting platform in the length direction of the light tube, a mounting groove is formed in the bottom of the groove, and the two sides of the groove are slopes. Turning edges which bend outwards are arranged on the two sides of the top portion of the groove, a sliding chute which is provided with an outward opening is formed by the turning edges and the mounting platform in a enclosing mode, sliding bars are arranged on the bottom of the two sides of a cover, and the sliding bars are matched with the sliding chute. An LED substrate is arranged in the mounting groove, a plurality of LED chips are arranged on the LED substrate, the LED chips are arranged in a line, and optical strips are arranged on the bottom of the cover. Due to the fact that the LED substrate sinks down, the light mixing distances of the LED chips are increased, and sufficient distance is supplied for uniform mixing of the light of the LED chips.

The invention provides an LED (Light-Emitting Diode) packaging structure, which comprises an LED chip and a frame body, wherein the frame body is used for containing the LED chip, the frame body comprises a bottom wall, a first lateral wall and a light-emitting wall, the LED chip is arranged on the bottom wall, the first lateral wall is obliquely arranged on the light-emitting direction of the LED chip, and rays emitted by the LED chip are emitted out of the light-emitting wall after being reflected through the first lateral wall. The invention further provides a liquid-crystal display device. In the mode, the rays emitted by the liquid-crystal display device and the LED chip in the LED packaging structure of the liquid-crystal display device disclosed by the invention are emitted out of the light-emitting wall after being reflected through the first lateral wall, so that the light-mixing distance of the LED chip is further increased, the generation of a light-emitting blind area is avoided, and the phenomenon of hot spots can be eliminated.

The invention discloses a display device, comprising: a miniature light-emitting diode lamp board, and an angle selection layer located on the light-emitting side of the miniature light-emitting diode lamp board. The transmission of light rays in a range, wherein the incident angle value corresponding to the first incident angle range is smaller than the incident angle corresponding to the second incident angle range. The reflective layer on the micro-LED lamp board can diffusely reflect the light reflected by the angle selection layer, and re-enter the angle selection layer, so that the light at the second incident angle after diffuse reflection can be transmitted, while the light at the first incident angle The light continues to repeat the above-mentioned reflection operation, and finally the light intensity distribution of the backlight module is uniform.