52results about How to "Eliminate dark areas" patented technology

A backlight module includes a light guide plate, a light source, and a reflector. The light guide plate includes an incident surface and a corner adjacent the incident surface. The light source is disposed adjacent the incident surface and the corner of the light guide plate. The light source has an emitting surface. The reflector is disposed substantially facing the incident surface. The reflector has a curved reflective surface facing the emitting surface, the surface being shaped and positioned for uniformly reflecting light beams emitted from the light source into the light guide plate through the incident surface. An angle of inclination of the emitting surface with respect to the incident surface is chosen to be in the range from above about 0 to about 180 degrees. The backlight module can effectively eliminate shadow formation adjacent the incident surface of the light guide plate.

A method for compensating the brightness of a liquid crystal module involves acquiring an image of a liquid crystal module to obtain the acquired image. The acquired image of the liquid crystal module is compared with a standard image to find a dark region. The compensation coefficient of each pixel in the dark region is calculated. In a display control circuit of the liquid crystal module, the calculated compensation coefficient of pixels is stored for compensating the backlight unit corresponding to pixels in dark region.

The invention discloses a pixel unit, which comprises a gate line, a source line, a drain line, an active element and a pixel electrode. The active element is electrically connected with the gate line, the source line and the drain line. The pixel electrode comprises a trunk line and multiple strip-shaped electrodes. The trunk line is electrically connected with the drain line and forms a first pre-set angle with a first polarizing axis or a second polarizing axis. The trunk line has two subsections at least. One end of each strip-shaped electrode is connected with the trunk line and each strip-shaped electrode and the trunk line form a second pre-set angle. The invention also discloses an LCD panel.

The invention discloses an LED backlight module which comprises a light guide plate and at least one LED luminous source, wherein the light guide plate is at least provided with a light incidence surface; the LED luminous source is arranged opposite to the light incidence surface of the light guide plate; the LED luminous source is provided with a light emission surface facing to the light incidence surface of the light guide plate and at least arranged at one side of the light guide plate; the light emission surface of the LED luminous source forms an inclination angle of larger than 0 DEG and less than 90 DEG relatively to the light incidence surface of the light guide plate. The LED backlight module can reduce a mixed light distance between adjacent LEDs in the prior LED backlight source art, reduce and even eliminate a dark area, save the cost and reduce the heat emission of the module.

A backlight unit and a display device having the same includes a light source installed at a position, separated from the central region of a light diffuser diffusing light by a predetermined distance, to radiate light to the light diffuser, and a lens unit installed between the light diffuser and the light source and having a surface facing the light source, the surface of the lens unit facing the light source including reflective areas which are coated with a reflective material and reflect a part of light radiated from the light source, and a transmissive area transmitting the other part of light radiated from the light source. The display device may eliminate generation of a dark region on a display panel due to the shadow of the backlight unit through improvement of the structure of the lens unit.

The invention discloses a lateral type backlight module. The lateral type backlight module comprises a light guide plate, a light emitting diode arranged on the end surface of the light guide plate, and a lens arranged on the top surface of the light guide plate, wherein the lens comprises a bottom surface attached to the top surface of the light guide plate, and a light distribution surface extending from the bottom surface; and a lattice point area is arranged on the bottom surface, opposite to the top surface, of the light guide plate, and is aligned to the middle of the light distribution surface of the lens. After light rays emitted by the light emitting diode arranged at one side of the lens are scattered by the lattice point area on the bottom surface of the lens and are distributed by the light distribution surface of a light outlet surface, the light intensity in the middle of the lens can be weakened, and the peripheral light intensity of the lens can be intensified, so that the effects of eliminating a dark space and making the light rays uniform are achieved; and the lateral type backlight module has a simple structure and good optical effect.

The invention discloses a track lamp. The track lamp comprises a track part and at least one lamp body module arranged on the track part, the track part comprises a guide rail part and track electrodes arranged on the guide rail part, the lamp body module is provided with connecting terminals electrically connected with the track electrodes, an electrode isolation part is arranged at the position,between the track electrodes, of the guide rail part, the end, close to the lamp body module, of the electrode isolation part is provided with a buckling part, elastic buckles matched with the buckling part are arranged on the lamp body module, the connecting terminals are arranged on the outer sides of the elastic buckles, when the elastic buckles and the buckling part are combined, elastic deformation is generated, and therefore the connecting terminals and the track electrodes are tightly in abut joint. A connecting structure between the lamp module and the track part is sufficiently usedfor reinforcing electric contact between the track electrodes and the lamp module, reliability is improved while the structure is simplified, the lamp body module can be pressed in the track part in place in a one-time operation manner, and mounting is more convenient and rapid.

The invention discloses a backlight module lens. The lens comprises a substrate having a cubic structure as a whole; the substrate comprises a square bottom surface, a square top surface and a side surface, wherein a center of the bottom surface is recessed upward to form a light incident surface; the top surface upwardly bulges in order to form a main light-emitting surface, and the main light exiting surface comprises four free curved surfaces, and the four free curved surfaces have a combined center point and are symmetric about the center of the combined center point; and the combined center point is downward recessed toward to the light incident surface and is on the same center line as the center point of the light-incident surface, wherein the bottom surface of the substrate has a size smaller than the top surface size such that the side surface is inclined toward the inner side by an angle theta 1 to form an auxiliary light-emitting surface. The backlight module lens can outputa square spot with clear edges, and can achieve uniform illumination distribution in the projection area, and the overall illumination effect is excellent when combined into an array.

The invention provides a preparation method of an LED filament and an LED filament. The preparation method comprises the steps of A1, providing a strip-shaped filament substrate and a plurality of LEDchips, wherein the plurality of LED chips extend along the length direction of the filament substrate in a left-right staggered mode and are die-bonded on the filament substrate; A2, welding a metalwire between the adjacent LED chips to form electric connection, wherein the metal wire has radians on a horizontal projection plane parallel to the surface of the filament substrate and a vertical projection plane perpendicular to the surface of the filament substrate; and A3, coating a packaging adhesive, wherein the packaging adhesive coats the LED chips and the metal wires. The stability of the LED filament can be effectively enhanced, and the service life of the LED filament is guaranteed.

An insertion-type light source device comprises a light source having a filament mounted on a base and a handle extended from the base, and an envelope, which is an integrally molded hollow body composed of at least two concave reflectors, having a light outlet and an opening for inserting the filament of the light source into an interior of the envelope. The light source is replaceable by means of removing the light source from the envelope through the opening. After the light source is completely inserted, the light source is positioned correctly relative to the reflectors of the envelope without calibration. In use, a user can hold the handle of the light source to prevent the whole device from contamination.

The embodiment of the invention provides an LED lamp. The LED lamp comprises a metal substrate structure, multiple LED units and a drive source circuit, wherein the metal substrate structure is connected with a lamp holder structure and comprises multiple structure surfaces, and the multiple LED units are fixed to the multiple structure surfaces correspondingly. In a lamp shade, at least part of light emitted by the LED units is reflected by the multiple structure surfaces, so that multiple mixed light areas are formed. The power input end of the drive source circuit is used for being connected with a power supply. The power output end of the drive source circuit is electrically connected with each LED unit. The light emitted by the LED lamp is diffusion-type light, and the light is even and not offending to the eyes; and besides, the LED lamp can achieve 360-degree light emission, and therefore a dark area of the LED lamp is eliminated.

The invention discloses a light distribution element and a lamp. The light distribution element is suitable for light distribution of a light source. The light distribution module comprises at least two first light distribution modules arranged in the height direction of the light distribution module, wherein the first light distribution module surrounds the light source in the circumferential direction, the first light distribution module comprises a light inlet surface and a light outlet surface which deviate from each other, the light inlet surface and the light source are oppositely arranged, and the first light distribution module is of a divergent light structure from the light inlet surface to the light outlet surface; a recess is formed between every two adjacent first light distribution modules. According to the scheme, the problem that an existing lamp has a dark area can be solved.

The invention relates to the technical field of line lamps, especially to a seamless splicing line lamp which is simple in structure, stable, reliable and free of light and shadow dark areas. The seamless splicing line lamp comprises at least two seamlessly-spliced lamp bodies and at least one connecting module used for connecting the lamp bodies. Every two lamp bodies share the same connecting module. The connection module comprises a pinch plate, a first terminal arranged on the pinch plate and a second terminal electrically connected with the first terminal. Plugs are arranged on the end faces of every two adjacent lamp bodies which are seamlessly spliced, each plug is provided with a receding cavity communicated with the wiring part of the corresponding lamp body, and the two recedingcavities and the splicing parts of the two lamp bodies jointly form a stepped groove; the connecting module is clamped in the stepped groove and detachably connected with the two plugs, the first terminal is electrically connected with the wiring portion of one lamp body, and the second terminal is electrically connected with the wiring portion of the other lamp body.

A light path adjustment mechanism includes a support, a carrier, an optical plate member and a plurality of actuators. The carrier is disposed on the support and connected to the support via a first elastic member and a second elastic member. The carrier includes a first side, a second side opposite the first side, a third side and a fourth side opposite the third side, and each of the third side and the fourth side is located between the first side and the second side. The actuators are disposed on at most three sides of the first side, the second side, the third side and the fourth side, and the actuators are disposed at least on the first side and the third side.

The invention discloses an ultra-thin high-uniformity direct-type plant illumination light source device comprising a plurality of LED lamps, bosses, straight heat tubes, a back plate, reflective backplates, a diffusion light panel, a brightening film and a frame; the frame is a rectangular frame with an opening in the top, the brightening film is located in the bottom of the frame, the diffusionlight panel is located on the surface of the brightening film, and the back plate is installed on the top opening of the frame; the bosses are distributed on the surface of the back plate at intervals, the straight heat tubes are arranged inside the bosses, and the bosses and the reflective back plates are alternately arranged on the surface of the back plate. According to the ultra-thin high-uniformity direct-type plant illumination light source device in the invention, high uniformity and thinning of the growth light source are realized, meanwhile, the heat dissipation performance is optimized, and a wide application prospect is achieved in light source optimization in plant factories.

The invention discloses a light path regulation mechanism, which comprises a substrate, an optical element, a first connecting machine part and a second connecting machine part, wherein the first areaand the second area of the substrate are independently provided with a first hole and a second hole; in addition, the optical element is arranged on the substrate; one end of the first connecting machine part is connected to the first area of the substrate through the first hole; in addition, one end of the second connecting machine part is connected to the second area of the substrate through the second hole; and the first hole can be provided with an integral-forming thread, or a nut can be arranged in the first hole. By use of the light path regulation mechanism disclosed by the invention,since a stress concentration area is not formed on the junction of the connecting machine part and an optical element, the optical element can greatly reduce or eliminate stress so as to be favorablefor providing an effect on improving imaging resolution and image quality (dark area elimination, image edge softening).

The invention relates to a light guide plate comprising a body and a plurality of semi-cylindrical net points. The body includes a light incidence surface, a front surface and a back surface opposite to the front surface. The light incidence surface is connected with the front surface and the back surface, and the light incidence surface and the front surface are perpendicular to each other. The front surface includes a light emergence surface and a border surface surrounding the light emergence surface. The net points are continuously distributed on the light incidence surface and are connected in sequence. Each net point includes two oppositely-arranged semi-circular bottom surfaces, a circular arc circumferential surface and a fixed surface arranged opposite to the circumferential surface, wherein the circumferential surface and the fixed surface are connected with the two bottom surfaces, the fixed surface is a plane and is arranged on the light incidence surface, and the radius of the bottom surfaces is larger than 0mm and smaller than 1mm. The central axis of each net point is perpendicular to the front surface and extends along the height direction of the net point, and the height of the net point is equal to the thickness of the light incidence surface along a direction perpendicular to the front surface. The invention further relates to a backlight module using the light guide plate.