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 backlight module and a light-emitting diode (LED) display. The backlight module comprises a light source module with a luminous surface and a back panel, a reflecting piece and a light guide plate which are sequentially stacked, wherein one end of the light guide plate bends and extends to the back panel direction to form a bending part of which the outer surface is not transparent; an end face at the tail end of the bending part is a light entrance surface; and the light source module is fixed on the edge of the back panel, and the luminous surface of the light source module is opposite to the light entrance surface. According to the backlight module, because the light source module is positioned on the outer side of the back panel, the generated heat is directly dispersed outwards and is not collected inside the back panel; and therefore, the radiating efficiency is improved, and all problems caused by bad radiation of the backlight module in the traditional technology are solved; and meanwhile, the light source emitted from the light source module does not directly enter the side face of the light guide plate and enters the light entrance surface of the bending part, after the light is reflected and fully mixed inside the bending part, and the light source enters the backlight module; and therefore, the dark space inside the backlight module is eliminated, and the backlight effect is improved.

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.

The invention discloses a spliced directional backlight source and a display system using the same. The spliced directional backlight source includes splicing substrates, a plurality of light emittingareas, and a light diffusion film layer. Each splicing substrate is provided with splicing structures on the two sides thereof, and the splicing structures are used to splice and extend the splicingsubstrates. The light emitting areas are distributed on the splicing substrates. The adjacent light emitting areas are at least partially in staggered distribution in the transverse direction, and areindependently distributed in the longitudinal direction. A light source with the light emitting areas in continuous and staggered distribution in the transverse direction is formed through splicing and extending. The light diffusion film layer is arranged corresponding to the light source. The light diffusion film layer is arranged in front of the splicing substrates to form a backlight source. Alens array is arranged in front of the backlight source. A liquid crystal display layer is arranged corresponding to the backlight source. The other side of the liquid crystal display layer is an observation area. The invention aims to eliminate the dark area in the visual area of the existing naked eye 3D display system and to solve the problem that the viewing angle and depth are limited in 3Dvideo watching.

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.

A backlight device (100) includes a reflection plate (110) having a reflective surface and a heat dissipating surface, and a light source module (120) disposed adjacent to the reflective surface of the reflection plate; the light source module comprising at least one cold cathode fluorescent lamp, and the cold cathode fluorescent lamp comprising at least two parallel linear portions (122) and at least one intermediate portion (121) interconnected to the at least two linear portions. The backlight device further includes a cooling module (130). The cooling module is attached on the heat dissipating surface of the reflection plate. The present backlight device can improve brightness and chroma uniformity. And the brightness of the light source module is improved, and the utilization efficiency of light thereof is also increased, accordingly.

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 provides an array substrate, a manufacturing method thereof and a display device and belongs to the field of liquid crystal display. The array substrate comprises a base substrate, wherein gate lines, data lines, a thin-film transistor, a common electrode, a pixel electrode and a passivation layer are formed on the base substrate, the gate lines and the data lines intersect, so as to define a plurality of pixel areas, the thin-film transistor comprises a gate electrode connected with the gate lines, a source electrode connected with the data lines and a drain electrode connected with the pixel electrode, a conductive pattern is formed on the upside of the gate electrode, and the projection of the gate electrode in the direction vertical to the base substrate falls into the conductive pattern. The technical scheme provided by the invention has the advantages that the dark zone phenomenon of the display device can be eliminated, and the display quality of the display device is improved.

The invention discloses a light source module. The light source module comprises a light guide plate, at least one lighting element and a lampshade; the light guide plate is equipped with a first surface, a second surface and a light incoming surface; the lighting element is arranged beside the light incoming surface and equipped with a light outgoing surface which faces the light incoming surface; the lampshade covers the lighting element and one end of the light guide plate, close to the light incoming surface; the lampshade comprises a side plate and an upper plate; the lighting element is arranged between the side plate and the light incoming surface; the upper plate is equipped with a first end, a second end relative to the first end, and at least one convex surface; the upper plate is connected with the side plate through the first end; the upper plate covers the lighting element and the part of the first surface, close to the light incoming surface; the convex surface is positioned right above the lighting element and protrudes toward the lighting element; the convex surface extends from one side of the upper plate, close to the first end to the second end. The light source module provides a high-uniformity surface light source.

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 embodiment of the invention provides an LED lamp. The LED lamp comprises a metal base plate structure, multiple LED units and a drive power circuit. The metal base plate structure comprises multiple structure surfaces, and the multiple LED units are fixed to the multiple structure surfaces of the metal base plate structure correspondingly, wherein the LED units on the structure surfaces are arranged in the long-axis direction of the LED lamp. Multiple light mixing areas are formed through reflection of at least part of light emitted by the multiple LED units through the multiple structure surfaces. The drive power circuit is fixed to the metal base plate structure, the power input end of the drive power circuit is used for being connected with a power supply, and the power output end of the drive power circuit is electrically connected with each LED unit. By means of the LED lamp in the embodiment, printed circuit boards are adopted, modularization can be achieved, and the assembling process of the LED lamp can be simplified. In addition, the LED lamp is good in heat dissipation, and inert gases such as helium do not need to be used for isolation.

The invention relates to the field of optical elements, in particular to a beam splitter combination structure which comprises a mounting plate and a plurality of lamp beads, the lamp beads are arranged on the mounting plate at intervals in an array mode, the direction parallel to the long axis of the illumination range of the lamp beads is the X direction, and the direction parallel to the short axis of the illumination range of the lamp beads is the Y direction. The LED lamp further comprises at least two overlapped light splitting plates, one light splitting plate is arranged in the irradiation range of the lamp beads and diverges light of the lamp beads towards the X-direction side, and the other light splitting plate is arranged in the irradiation range of the adjacent light splitting plate and diverges light of the lamp beads towards the Y-direction side. The backlight module has the effect that the thickness of the backlight module can be reduced under the condition that a good atomization effect is kept.

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 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 provides reflecting film and a backlight module. The reflecting film is applied to the backlight module, the light source of the backlight module forms a dark region on the reflecting film, regarding the reflecting film, a thermoluminescence material is smeared on the dark region, and therefore the problem is solved that since light cannot reach the corner of the reflecting film, the dark region occurs at the corner of the reflecting film.

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.