56results about How to "Avoid dark areas" patented technology

The invention discloses a light-emitting diode (LED) backlight module of a side light source. The LED backlight module comprises a light guide plate and a reflective sheet, wherein the light guide plate is provided with a light entering plane and a light exiting plane, an LED light source is arranged on the side of the light entering plane. The reflective sheet is arranged below the light guide plate, a plurality of blank coatings or black and white color gradient coatings with preset distances among each other are formed on one side of the reflective sheet to lower the reflective light intensity of the light source. The blank coatings or the black and white color gradient coatings are arranged on the LED light position corresponding to the reflective sheet. The width of the blank coatings or the black and white color gradient coatings is larger than that of the light emitting surface of the LED lights. According to the design of the mentioned scheme, the color coatings reaching the reflective sheet are mutually and correspondingly matched with the light LED lights. The color coatings absorb the light entering the reflective sheet, and therefore the uniformity of the light intensity of the emergent light of the backlight module is guaranteed. Further, when the pitches among the LEDs are too large, dark regions are prevented from emerging among the LEDs, and the abnormal optical phenomenon of uneven light and shade of the light guide plate is effectively improved.

The invention provides a backlight module, which comprises a light guide plate, a light source arranged on the side face of the light guide plate, and a reflecting structure used for reflecting a part of light rays in the light rays emitted by the light source which are not transmitted into the light guide plate into the light guide plate. Correspondingly, the invention provides a display device comprising the backlight module. Due to the adoption of the backlight module disclosed by the invention, the Hotspot phenomenon can be eliminated, and the light energy utilization ratio can be increased.

The invention discloses an LED bulb. The LED bulb comprises a bulb holder, a bulb case and at least three light source plates, wherein the top of the bulb holder is covered with the bottom of the bulb case, each of the light source plates is provided with an LED light source on the front side, the front of each light source plate faces towards the bottom of the bulb case, the light source plates are arranged at the top of the bulb holder annularly, fronts of the light source plates are arranged oppositely, and heights of the light source plates are lower than that of the bottom of the bulb case. The LED bulb has the advantage of even light emitting.

The invention provides a backlight module and a display device comprising the same. The backlight module comprises a light guide plate and an LED (light-emitting diode) lamp strip, the LED lamp strip comprises a printed circuit board and a plurality of LEDs which are mounted and electrically connected onto the printed circuit board, the LEDs comprise first LEDs positioned at two ends of the printed circuit board, each first LED comprises a main light-emitting surface and a side light-emitting surface, each main light-emitting surface is parallel to a light entering surface of the light guide plate, and each side light-emitting surface faces one end of the printed circuit board adjacent to the side light-emitting surface. Part of light of the first LEDs irradiates to the corner of the light guide plate, the problem of dark corner space of the backlight module caused by retraction of the LED lamp strip is effectively avoided, the structure is simple, and the display quality of the display device is improved.

A vehicular lighting fixture can include a shade wherein an end edge of an upper surface of the shade is positioned at or in a vicinity of a focus of a projection lens. A first reflection surface can be provided to condense light from a light source in a vicinity of the end edge and to form a basic light distribution pattern by the projection lens. A second reflection surface which can comprise one planar reflection surface and can reflect light from the first reflection surface to form a first additional light distribution pattern. A third reflection surface can be provided on a higher surface of a step section of the upper surface, and can reflect light from the first reflection surface to form a second additional light distribution pattern. A fourth reflection surface can connect the second and third reflection surface, and can reflect the light from the first reflection surface in a direction not incident on the projection lens.

An array substrate includes a pixel electrode, a thin-film transistor (TFT) and a storage line. The pixel electrode has a first electrode portion, a second electrode portion and a connecting electrode portion to electrically connect the first and second electrode portions to each other. The second electrode portion is spaced apart from the first electrode portion by a predetermined distance in a first direction. The TFT is electrically connected to the pixel electrode to drive the pixel electrode. The storage line overlaps a portion of the pixel electrode and has an asymmetric connecting electrode closer to the second electrode portion than to the first electrode portion.

A light guide plate includes a light exit surface, a reflection surface opposite to the light exit surface, and at least one light incidence surface connecting to the light exit surface and the reflection surface. The reflection surface includes a plurality of minute projection structures projecting toward interior of the light guide plate. Each of the minute projection structures includes at least two side faces coated with a high reflectivity material. The at least two high reflectivity material coated side faces form at least one included angle pointing toward the at least one light incidence surface. The minute projection structures have a distribution density that is decreased with an increase of a distance thereof from the light sources.

A display apparatus includes plural light guide plates each including a light incident surface and a light output surface, plural light sources providing light to the light guide plates, and a display panel receiving the light to display an image. The light guide plates have a rectangular shape, are spaced apart from each other and are in a same plane. The light sources are disposed between two adjacent light guide plates. Each of the light sources includes a light emitting surface, and provides the light to the light guide plates through the light emitting surface. The light emitting surface of the light sources is inclined with respect to one side of the light guide plates.

Some embodiments of the present disclosure relate to a backlight unit and a liquid crystal display device, in a case where an edge area of a cover bottom is formed in an inclined structure, a reflective unit, such as a reflective sheet, forming a step structure is disposed in the boundary between a bottom surface and an inclined surface of the cover bottom, and thus a sufficient amount of light can be uniformly supplied to a lower portion of the panel corresponding to an edge area of the cover bottom. In addition, since a light absorption pattern is applied to a step structure of the reflective unit, improved luminance and uniformity of light can be provided in an area of the panel corresponding to an inner side of the inclined surface and the inclined surface of the cover bottom.

The invention provides a liquid crystal display device. The liquid crystal display device comprises a backlight module, and the backlight module comprises a plastic frame and a diffusion plate arranged on the plastic frame; the plastic frame comprises a first part, a second part and a third part, and the second part and the third part are located on the two sides of the first part respectively; the first part is provided with a first groove, and the bottom of the first groove is provided with a light source; the second part and the third part are both provided with a second groove so that boththe second part and the third part can be spaced from the diffusion plate; at least one support member is arranged between the second part and the diffusion plate, and at least one support member isarranged between the third part and the diffusion plate. By means of the liquid crystal display device, it can be avoided that dark areas appear at the edge of a display area, and the display effect is improved.

A display apparatus includes a rear chassis, a light source installed in the rear chassis to emit light, a diffuser plate that diffuses light emitted from the light source, a liquid crystal panel positioned in front of the diffuser plate to display an image, a front chassis that supports the liquid crystal panel, and a middle mold coupled between the front chassis and the rear chassis to support the diffuser plate, and is provided with a curved reflective surface formed in a curved shape to reflect the light, which is emitted from the light source module, to the diffuser plate.

The invention discloses a light-emitting diode (LED) lamp. The bottom of a radiator is batwing; LED heat radiation strips are fastened in grooves at the bottom of the radiator; one or more radiator fans are arranged in the lamp and directly radiate heat of the LED heat radiation strips which are exposed out of the radiator. Simultaneously, the bottom shapes of the radiator are set to be a plane shape, an arc-shaped polyhedron shape, a semi-circular polyhedron shape, or a hemispherical polyhedron shape according to different light distribution curves of various lamps, so that effects of the light distribution curves of the lamp are achieved. By using the LED heat radiation strips, the LED lamp is convenient to maintain; and by using a built driving heat radiation structure, the heat radiation effect is improved, so that the effective service life of the LED is guaranteed.

The present invention discloses a backlight LED structure, a backlight and a display device. In the backlight LED structure, a flange structure is arranged at the upper side of an LED bracket which is defined when the LED bracket is mounted close to a light guide plate such that the flange structure covers the upper side of the light guide plate when the LED structure and the light guide plate are assembled. In addition, each of the two ends of the flange structure has an angular area extending outwards, and the lower surfaces of the two angular areas are distributed with light guide points. The backlight LED structure can prevent the LED light from being emitted from the fitting gap between the backlight LED structure and the light guide plate, and control direction of light between the backlight LED structures and scatter travel direction of the light.

A backlight unit with a light guide plate preventing a dark area between LEDs is provided, wherein dark area-preventing patterns may adequately compensate for the brightness in a gap between the LEDs that may be a dark area even under the condition that the gap is relatively large and greater than or equal to the width of an LED and thus, uniform brightness may be obtained without an occurrence of the dark area. Accordingly, the number of the LEDs may decrease and thus, a large-sized backlight unit may be fabricated with a relatively low cost.

The invention relates to a novel closed-type halogen-tungsten automobile headlamp which comprises a lamp shade, a lamp body and a luminous body, wherein the internal surface of the lamp body is provided with a reflecting curved surface; the luminous body is installed on the back end of the lamp body; the front end of the lamp body is connected with the lamp shade; the center of the bottom of the reflecting curved surface is provided with a groove; and the tail of the luminous body is positioned in the groove. The novel closed-type halogen-tungsten automobile headlamp can realize higher light utilization ratio, obtain better lighting shape and ensure adequate adjustment space when a halogen bulb is assembled.

The invention discloses a novel LED lamp. The novel LED lamp comprises a bulb. An LED substrate is arranged in the bulb. The lower portion of the LED substrate is a column body form by folding multiple quadrangles. A folding mounting portion is arranged on the lower portion of the column body. The upper portion of the LED substrate is a conical body formed by folding multiple triangles. The outer surface of the column body and the outer surface of the conical body are provided with multiple LED beads. The folding mounting portion is connected with the bottom of the bulb. A driver power source is arranged in a lamp cap. The LED substrate is electrically connected with the driver power source. The folding mounting portion is attached to the bulb and then fixed to a support frame. The support frame is connected with the lamp cap. The invention further discloses an implementation method of the novel LED lamp. The novel LED lamp and the implementation method have the beneficial effects that the structure is simple, the cost is low, the production efficiency is high, the heat dissipation is good, and the problem of the dark area of the top of the bulb is solved effectively.

According to the lens and the light-emitting device, the first area of the top face of the lens comprises the inner refraction face which can transmit part of light rays emitted by a light source to the outside of the lens, and therefore the top face of the lens can emit light to illuminate the area above the lens, and the problem that a dark area is formed in the position where the lens is located is avoided. Meanwhile, the first area is also provided with the inner reflecting surface, and the inner reflecting surface can reflect part of light of the light source to the side surface of the lens to be emitted, so that the problem that the light right above the lens is too bright can be avoided, and the overall light emitting uniformity of the light-emitting device is improved.