39results about How to "Uniform backlight" patented technology

A LCD device has a LCD panel and a drive TCP for driving the LCD panel. Back light is guided to the rear surface of the LCD panel by a light-conductive sheet. The leakage back light passed the rear surface of the light-conductive sheet is reflected by a reflecting plate having a conductive film at the rear surface of the reflecting plate. The conductive film is connected to a ground pattern of the printed circuit board which transfers signals to the drive TCP. The reflecting plate has both functions for reflecting back light and shielding the LCD panel against the noise generated by the printed circuit board.

A light fixture, particularly adapted for cove lighting, includes an angled reflector assembly that directs light from a fluorescent tube generally toward the back wall of a cove that is above the electrical sockets of the light fixture. The angled reflector assembly is designed such that light is directed from the main illumination portion of the fluorescent tube, rather than from the cool spots of the fluorescent tube. The light fixture reduces dark spot formation in the backlighting of the back wall and therefore provides a relatively even illumination pattern.

An LED edge-lit sign comprises a transparent light panel, an image-carrying sheet in front of the light panel and a reflective back plate behind the light panel. The image to be displayed is printed onto the image-carrying sheet and a translucent layer of white ink is uniformly applied over the printed image. The result is uniform and effective back lighting of the image. A transparent window may be provided to view a changeable display therethrough.

The invention discloses a backlight structure of a touch key, which makes the touch key on a panel produce backlight allowing a user to operate conveniently under a dark condition. The structure comprises the panel, a key plate and a backlight plate, wherein the panel is arranged on the outermost side of the backlight structure and bears the touch key; the key plate is taken as a circuit board which realizes the operation function of the touch key; a printed circuit is formed on the surface of the circuit board; the key plate is arranged close to the panel; a luminous backlight source is formed on the backlight plate; the key plate is arranged between the panel and the backlight plate; a semitransparent part is formed at a position, which corresponds to the touch key on the panel, on the key plate; and light rays produced by the backlight source are uniformed by the semitransparent part while passing through the semitransparent part and irradiate on the back side of the touch key. After light rays are uniformed by the circuit board, the 'flashlight' effect of a point light source is improved, so that a uniform surface light source can be realized easily by a small number of light-emitting diodes and the backlight of each key can be controlled separately.

The invention discloses a mobile phone which comprises a touch screen, a display screen and an LED (light-emitting diode) lamp, wherein a virtual key is arranged at one end of the touch screen, the display screen is arranged below the touch screen correspondingly and comprises a display part and a non-display part arranged on the edge of the display part; and the LED lamp is laminated on the non-display part of the display screen and corresponds to the virtual key. Through the structure, the technical scheme disclosed by the invention enables the light emitted by the LED lamp to be directly irradiated on the virtual key and avoids an overlarge black edge between the display part of the display screen and the virtual key simultaneously, and enables the backlight to be uniform and the visual effect to be good.

The invention relates to a light conduction device and a backlight device. The light conduction device comprises a light uniformity component, plural optical fibers and a light distribution component, wherein the light distribution component is arranged between the plural optical fibers and the light uniformity component and comprises plural micro-lenses; and the multiple micro-lenses respectively correspond to the multiple optical fibers so as to lead light rays emitted from the light uniformity component into the corresponding optical fibers. The backlight device comprises the light uniformity component, a light guide plate and the plural optical fibers, wherein the light incidence ends of the optical fibers are bundled and ranked into a circular light receiving region to receive the light rays emitted from the light uniformity component; and the light emergent ends of the plural optical fibers are in staggered arrangement according to the ranking position of the corresponding light incidence ends and are used for uniformly leading the light rays into the light guide plate. Thus, according to the light conduction device and the backlight device, the light rays can be evenly conducted, and the uniformity of backlight is improved.

An embodiment of the invention provides a backlight module and electronic equipment. The backlight module comprises a light source for supplying light for the backlight module, a light guide plate, a middle frame and a back plate, wherein a fluorescent film is adhered to the end face of the non-light-entering side of the light guide plate, adhesive tape is adhered to the inner wall of the middle frame, the guide plate adhered with the fluorescent film is assembled to a cavity formed by the middle frame and the back plate, and the fluorescent film is allowed to contact with the adhesive tape. By the arrangement, the formed white-light backlight module is free of blue light leakage and edge bright lines, high in color gamut, ultrathin, ultra-narrow in edge, and the like.

The invention discloses a backlight module and a display device and belongs to the technical field of display, including light sources and multilayer optical diaphragms arranged in piles, wherein thelight sources are side entry light sources; a hollow portion, wherein the hollow portion penetrates the multilayer optical diaphragms along the thickness direction of the backlight module; the hollowportion includes a light guide portion, wherein the light guide portion includes a transparent main body portion, a first reflector and a second reflector, and the cross section of the main body portion is annular; a side of the light guide portion close to the light sources is a first side, and a side of the light guide portion away from the light sources is a second side; the inner side wall ofthe main body portion of the second side is provided with the first reflector; the outer side wall of the main body portion of the second side is provided with the second reflector, wherein the secondreflector includes a plurality of transparent areas; after light of the light sources entering the light guide portion, reflection occurs between the first reflector and the second reflector and at least part of reflected light is emitted from the transparent areas. Compared with the prior art, the backlight module and the display device can provide the backlight module with uniform backlight, thereby enhancing display quality.

The invention discloses a liquid crystal module and display equipment. The liquid crystal module comprises a module backboard, a supporting member, a diffusion board and a luminous component, and thediffusion board is opposite to the module backboard; the supporting member abuts against the portion between the module backboard and the diffusion board and comprises a supporting part and a bottom plate connected with one end of the supporting part, the end, deviating from the bottom plate, of the supporting part abuts against the diffusion board, the outer side face of the bottom plate is connected with the module backboard, and the inner side face of the bottom plate is a reflecting surface; the luminous component emits light relative to the inner side face of the bottom plate. The liquidcrystal module integrates the supporting member and the luminous component, so that the liquid crystal module is uniform in backlight.

The invention relates to the technical field of vehicle-mounted USB plug, particularly to a USB box. The USB box comprises a light source, at least one USB plug and a panel, wherein the USB plug is disposed on a circuit board and used for providing a USB connection; the panel is provided with at least one connection port for matching with the USB plug. The USB box further includes a light guide device, and the light guide device is adjacent to the panel without a component interval and is used for receiving light of the light source and acting on the panel, to alleviate the technical problemsin the prior art that it is difficult to correctly perform a USB connection operation in the case of night vision or poor light, and the USB is damaged easily.

The invention provides a voltage transformer of current changer. Wherein, making two ends of winding frame to coil the primary side excitation winding independently; arranging the secondary induction winding in the primary side excitation winding; making said two windings couple and stabilize the output of induced voltage to drive one or more CCFL simultaneously. This invention can improve stability and reliability, and then obtain more even backlight light source.

The invention discloses an LED price marking strip lamp. The LED price marking strip lamp comprises a two-color extrusion plastic pipe, end covers and a light source assembly, wherein the end covers are buckled on two sides of the two-color extrusion plastic pipe; a goods shelf illuminating light transmitting surface is positioned at the bottom of the two-color extrusion plastic pipe; a reflectingsurface is positioned on one side of the two-color extrusion plastic pipe; a price tag illuminating light transmitting surface is positioned on the other side of the two-color extrusion plastic pipe;the reflecting surface, the goods shelf illuminating light transmitting surface and the price tag illuminating light transmitting surface form a closed structure; a mounting groove a and a mounting groove b are formed in the lower part of the outer wall of the reflecting surface; a structural groove is formed in the inner wall of the reflecting surface and is arranged between the mounting groovea and the mounting groove b; one end of the light source assembly is positioned in the structural groove; the other end of the light source assembly is positioned in another structural groove formed between the bottom of the price tag illuminating light transmitting surface and the goods shelf illuminating light transmitting surface; a price tag catch and the price tag illuminating light transmitting surface jointly clamp a price tag. The strip lamp in the application has the advantages of being convenient to mount, simple in structure, resistant to dust and water, low in cost and the like.

The invention discloses an apheliotropic module framework adapted for plan display device, which at least comprises a deflector plate; two support boards, a plurality of supporting structures and light sources. The support boards are separately located in the relative sides of deflector plate. Several support structures in the form of two rows in parallel and stagger arrangement are set in midcourse of deflector plate and parallel to the said support boards. Each sight source is set in each one of support boards and support structures. The said support structures can make unidirectional incoming rays arise reflected rays in diversity directions to uniform the reflected rays.

A backlight module includes a light-guiding plate, a plurality of reflection spots, and a light source. The reflection spots are disposed on a back surface of the light-guiding plate. Light emitted by the light source enters the light-guiding plate through a light input side surface of the light-guiding plate, and is reflected by the reflection spots to emit out of the light-guiding plate through a light output surface of the light-guiding plate. The back surface includes a central portion and a fringe portion. The fringe portion extends along an edge of the back surface. The distribution density of the reflection spots on the fringe portion gradually decreases in a direction from the central portion toward the fringe portion.