Abstract: Uniform illuminating light is obtained on a surface at a prescribed distance from a radiation surface without increasing the thickness in a light radiation direction by using the light from the light source highly efficiently.

Abstract: A light bulb includes a base, light guide, and light source. The base is configured to mechanically mount the light bulb and receive electrical power. The light guide includes light input regions, at least one of the light input regions associated with an optical modifying characteristic, the light guide configured to propagate light by total internal reflection. The light source is located adjacent the light input regions. The light source and light input regions are variably positionable relative to one another to vary location at which light is incident on the light input regions such that light emitted from the light source is selectively apportioned between the light input regions. A characteristic of the light output from the light bulb is modified based on the optical modifying characteristic of the at least one of the light input regions and the relative positioning of the light source and light input regions.

Abstract: In a lighting device, uneven brightness may be suppressed at low cost. A backlight unit 12 includes: an LED 17; a chassis 14 including a bottom plate 14a provided on a side opposite to a light exit side relative to the LED 17, the chassis 14 housing the LED 17; and a first reflection sheet 22 reflecting light. The first reflection sheet 22 includes a quadrangular bottom 24 extending along the bottom plate 14a, and two raised portions 25 and 26 each of which is raised from each of adjacent two sides of the bottom 24 toward the light exit side, a joint J provided between adjacent two side edges 25a and 26b of the raised portions 25 and 26.

Abstract: A light emitting diode (LED) lamp includes a heat dissipation module, a circular light guide plate (LGP), and LED light sources. The heat dissipation module includes a heat dissipation element and a heat-conducting base that has a containing concave. The heat dissipation element connecting and surrounding the heat-conducting base is distant from the circumference of the heat-conducting base. The circular LGP in the containing concave has a top surface, a bottom surface, and an annular side surface. The top surface faces the heat-conducting base and has concentric annular trenches. The LED light sources are configured in the containing concave and face the annular side surface. The LED light sources are suitable for emitting a light beam which is capable of passing through the annular side surface to enter the circular LGP and capable of being reflected by the annular trenches and emitted from the bottom surface.

Abstract: Provided is a display apparatus, which includes a light source unit providing light, a light guide panel guiding the light to a display panel, the display panel receiving the light to display an image, and a bottom chassis accommodating the light guide panel, the light source unit, and the display panel. The light guide panel is adjacent to the light source unit, and includes a light incident surface to which the light is incident, a light output surface from which the light is emitted, and an opposite surface opposed to the light output surface. The display panel faces the light output surface and receives the light to display an image. The bottom chassis has a bottom facing the opposite surface. The light guide panel includes a coupling member protruding from the opposite surface and coupled to the bottom chassis.

Abstract: A light bulb includes a base, a light source and a light guide having opposed major surfaces and a light input edge that receives light from the light source, the light propagating along the light guide by total internal reflection and the light guide including a light output region on one of the major surfaces. An optical adjuster has a first region having a light modifying characteristic and a second region. The optical adjuster and light output region are variably positionable relative to one another to selectively apportion light emitted from the light output region between the first region and the second region, the light apportioned to the first region being modified by the light modifying characteristic thereof so that light output from the light bulb is modified based on relative positioning of the optical adjuster and the light guide.

Abstract: A light bulb includes a base; a light guide having opposed major surfaces between which light propagates by total internal reflection, a light input edge, and two light output regions of different optical characteristics at least one of which is associated with a corresponding one of the major surfaces; and a light source electrically coupled to the base and located adjacent the light input edge. The light source and the light guide are variably positionable relative to one another to vary a location on the light input edge at which light is input to the light guide such that light is emitted from the light guide selectively apportioned between the light output regions so that a characteristic of the light output from the light bulb is modified based on the optical characteristics associated with the light output regions and the relative positioning of the light source and the light guide.

Abstract: A lighting assembly includes a light guide to propagate light by total internal reflection and having a light output region on a major surface thereof. The lighting assembly also includes an optical adjuster having a major surface juxtaposed with and conforming to the light guide's major surface. The optical adjuster has a first region and a second region, the first region having a light modifying characteristic. The optical adjuster and light output region are variably positionable relative to one another to selectively apportion light emitted from the light output region between the first region and the second region. In this way, light apportioned to the first region is modified by the light modifying characteristic so that light output from the lighting assembly is modified based on relative positioning of the optical adjuster and the light guide.

Abstract: A planar lighting device comprises: a light guide plate including a concave rectangular light exit plane, two light entrance planes containing two opposite sides of the light exit plane and disposed opposite each other, two symmetrical inclined planes opposing to the light exit plane such that their distance from the light exit plane increases with the increasing distance from the two light entrance planes toward the center of the light exit plane, a curved portion connecting the two inclined planes; two light sources respectively disposed opposite the two light entrance planes for emitting light to enter the light into the light guide plate through the light entrance planes; and sliding mechanisms allowing the light sources to slide in a direction parallel to the light entrance planes of the light guide plate to absorb the expansion and contraction of the light sources along the length thereof.

Abstract: A liquid crystal display module displays an image on a liquid crystal panel. The liquid crystal module includes a liquid crystal panel and a backlight assembly. The backlight assembly includes a reflecting sheet having a raised portion that receives a light source and supports a diffusing sheet and/or optical sheet positioned between the liquid crystal panel and the light source.

Abstract: A laminated film for a reflecting plate is provided that comprises a layer A and a layer B, the layer A comprising a polyester that comprises substantially no antimony element and preferably comprises 1 to 25 wt % of inert particles having an average particle diameter of 0.3 to 3.0 ?m and the layer B being in contact with the layer A and comprising a polyester which preferably comprises 31 to 80 wt % of inert particles having an average particle diameter of 0.3 to 3.0 ?m. This laminated film has a practically satisfactory capability of reflecting visible light, can be produced stably even if inert particles are added in high concentration, hardly has streak-like defects, and can be suitably used as a substrate for a reflecting plate for a liquid crystal display or an internally illuminating electrical billboard.

Abstract: A display device includes a display layer and a light guide plate (LGP) arranged on the display layer. The LGP includes a first surface facing away from the display layer, an opposite second surface, and a lateral surface between the first and second surfaces, the lateral surface having a light incident portion. A light source and a scanning mirror are arranged on the lateral surface of the LGP. The light source configured to emit a light beam toward the scanning mirror, the scanning mirror being reciprocally rotatable about a rotating axis at a given frequency, the scanning mirror configured to reflect and direct the light beam from the light source to enter into the LGP through the light incident portion.

Abstract: Disclosed is an LED lighting device which is easily assembled and disassembled and has a stable assemblability without structural shaking. The LED lighting device is able to improve a heat radiating characteristic and optical efficiency. The LED lighting device according to the embodiment includes a lower case; a light source unit disposed on one side of the lower case; a light guide plate disposed in parallel with the light source unit; and an upper case disposed on the light guide plate and coupled to the lower case in an attachable and removable way.

Abstract: In a direct type backlight device of a liquid crystal display device, a light guide plate is used obtain a uniform in-plane distribution of light emission intensity. A reflective sheet (62) having an opening portion is laminated on a front surface of an LED substrate (60), and an LED element (74) is accommodated inside the opening portion. A light guide plate (64) is stacked on the reflective sheet (62). On a front surface of the light guide plate (64), a white reflective film (90) is formed in a non-total reflection region, which is positioned to oppose the LED element (74) and in which an incident angle of light emitted from the LED element (74) to the front surface is smaller than a critical angle. On a rear surface of the light guide plate (64), a pattern made of a white reflective film (92) is formed.

Abstract: A lighting device includes light sources arranged at an end, light guide portions arranged along an arrangement direction of the light sources and receiving light from the light sources, and light output portions arranged along a direction crossing the arrangement direction and exiting light from the light guide portions. The light output portions include at least a first light output portion and a second light output portion. The first light output portion is arranged relatively close to the light sources and the second light output portion is arranged relatively farther from the light sources with respect to the first light output portion. The light guide portions include at least a first light guide portion and a second light guide portion, and the first light guide portion is optically connected to the first light output portion and the second light guide portion is optically connected to the second light output portion.

Abstract: The lighting module includes: a case including an opening from which light is emitted, a base portion corresponding to the opening, and a seat on at least one side of the base portion; a light source unit disposed on the seat; a light guide plate placed within the case and optically connected with the light source unit; and a diffusing plate placed within the case and placed below the light guide plate, wherein the lighting source unit includes a substrate, a plurality of light emitting diodes (LEDs) disposed on the substrate, and a sub-reflector which is disposed on the substrate and covers the plurality of the LEDs, and wherein at least 90% of the light emitted from the LEDs is directly irradiated onto the light guide plate.

Abstract: A thin-profile portable electronic device with a display is described. The display can include a display assembly with an integrally formed light pipe and perimeter chassis. The light pipe can be utilized to provide back-lighting for the display. The light pipe and the perimeter chassis can be integrally formed to improve the stiffness of the light pipe and allow the over-all height of the display to be reduced. In one embodiment, the light pipe and the perimeter chassis can be formed using a co-molding process, such as an injection molding process.

Abstract: The present invention relates to an integrated backlight module with good heat equalization and heat dissipation performance, comprising: a main frame, a welded material, a thermal conductive medium, and at least one light source module, wherein the main frame has at least one edge for disposing the light source module and has good heat dissipation property. The light source module comprises: a reflective member, a copper circuit layer and a plurality of LED chips, wherein the light source module attached with a thermal conductive adhesion is attached to the edge of the main frame via the thermal conductive medium; besides, the welded material is used for steadily combining the thermal conductive medium with the edge.

Abstract: Provided are an illumination device that does not use a portion for shielding a light source, a light guide unit necessary for the illumination device and a display device incorporating the illumination device. In a light guide bar group (GR), a light emission portion arrangement line (S) formed by connecting the positions of processing portions (13) included in light guide bars (11) intersects a light receiving end arrangement line (T) formed by connecting positions of light receiving ends (12R) included in the light guide bars (11).

Abstract: A backlight assembly includes a light emitting part, a light guide plate, a bracket and receiving container. The light emitting part generates light. The light guide plate includes a first side surface which receives the light, and a second side surface adjacent to the first side surface. The bracket is fixed to the second side surface of the light guide plate. The receiving container includes a bottom, and a sidewall perpendicularly extending from the bottom, and receives the light emitting part and the light guide plate. The sidewall includes combining portions which are combined with the bracket.

Abstract: An object of the present invention is to provide a backlight for a liquid crystal display device which is easy to repair and prevents the brightness from lowering on the screen, and thus can provide high-quality images, where the region where point light source elements are aligned is divided into a number of smaller regions, and backlight units are provided so as to correspond to the respective smaller regions, as well as a liquid crystal display device using the same.

Abstract: A backlight assembly includes a light guide plate, a light source, a mold and a main frame. The light guide plate includes a first surface and a second surface extending from the first surface. The light source is disposed adjacent to the first surface of the light guide plate. The mold includes an upper portion, a lower portion and a side portion. The side portion connects to the upper and lower portions to form a receiving space, and the receiving space receives the light source and the first surface of the light guide plate. The main frame includes side walls and an upper wall extending from an upper portion of the side walls, and the mold is disposed in an opening below the upper wall.

Abstract: A backlight module including a circuit board, at least one first light emitting diode (LED) device, at least one second LED device, and a reflection device is provided. The first and second LED devices are disposed on a carrying surface of the circuit board and electrically connected to the circuit board. The brightness of the first LED device is greater than that of the second LED device. The reflection device is disposed on the circuit board and exposes the first and second LED devices. The reflection device has at least one first reflection region disposed around the first LED device and at least one second reflection region disposed around the second LED device. The reflection ratio of the first reflection region opposite to the light-emitting energy of the first LED device is smaller than that of the second reflection region opposite to the light-emitting energy of the second LED device.

Abstract: A backlight module includes a reflector, a light-guiding sheet, a light-emitting element, and a plurality of first adhesive materials. The reflector has a reflecting surface and the light-guiding sheet is disposed on the reflecting surface. The light-emitting element is disposed on the reflecting surface and located beside the light-guiding sheet. The first adhesive materials are disposed between the reflecting surface and the light-guiding sheet, and adhere the reflecting surface, the light-guiding sheet, and the light-emitting element.

Abstract: A display may be based on a display unit that is mounted within a chassis. The display unit may be a liquid crystal display unit. A backlight may be used to illuminate the display unit. The backlight may include a light guide plate. Light from a light source may be launched into an edge of the light guide plate. Scattered light from the light guide plate may travel vertically along a vertical axis that is perpendicular to the plane that contains the light guide plate. The scattered light may pass through the display unit and may serve as backlight for the display. The light guide plate may be mounted within a rectangular opening in the chassis. The edges of the rectangular opening and the edges of the light guide plate may be configured to reduce excessive reflections. These edges may have reflection-reducing coatings, non-planar surfaces, and other reflection-reducing configurations.

Abstract: The present invention relates to a luminaire, which comprises a plate-shaped light guide, and first lamps disposed on one or more narrow sides of the light guide and configured to couple light into the plate-shaped light guide, wherein the light coupled into the light guide is emitted via a flat side of the light guide in a first irradiating direction of the luminaire. Said luminaire is characterized in that the first lamps are formed by a plurality of light-emitting diodes and that the luminaire furthermore comprises second lamps and a reflector arrangement associated therewith, by way of which the light of the second lamps is emitted in a second irradiating direction opposite the first irradiation direction.

Abstract: A lighting module includes a case including an opening where a light emits from, a base portion corresponding to the opening, and a seat on at least one side of the base portion. The lighting module further includes a light source unit disposed on the seat, a light guide plate placed within the case and optically connected with the light source unit, and a diffusing plate placed within the case and placed below the light guide plate.

Abstract: An illuminating device (3) includes a mounting board (14) on which a plurality of light emitting diodes (8) are arranged in a line, a light guide plate (9) including a light incident surface (9a) for receiving light of the light emitting diodes (8), and a frame (12) including a side face (12b) to which the mounting board (14) is attached, and a bottom face (12a) on which the light guide plate (9) is disposed. The frame (12) includes a groove (12e) in which the end portion of the mounting board (14) is placed, and the groove (12e) is formed between the side face (12b) and the bottom face (12a) on the opposite side of the bottom face (12a) from the light guide plate (9). A supporting member (support) (16) for supporting the light guide plate (9) is placed in the groove (12e).

Abstract: A thickness of a backlight unit is reduced and brightness in a middle portion of a display device is improved. The backlight unit includes a first LED unit 23; a first light guide plate 20 including a light entering surface 20b, and a light exiting surface 20a; and a second light guide plate 21 including a light entering surface 21b, and a light exiting surface 21a. The light exiting surface 21a of the second light guide plate 21 is disposed to overlap at least a portion F of the light existing surface 20a of the first light guide plate 20 that is farthest from the first LED unit 23. Light outputted from the light exiting surface 21a of the second light guide plate 21 enters the first light guide plate 20 at least through a surface of the first light guide plate 20 opposite to the light exiting surface 20a thereof.

Abstract: A backlight module includes a housing, at least a light-mixing tube, a plurality of light emitting devices, and at least a reflector. The housing includes a bottom sheet and a frame, in which the bottom sheet and the frame define a chamber. The frame is a hollow structure, and inner walls of the frame define the light-mixing tube. The light emitting devices are disposed at a light entrance of the light-mixing tube. Lights generated by the light emitting devices enter the light-mixing tube from the light entrance, mix in the light-mixing tube, and emit from a light exit of the light-mixing tube. Lights emit from the light-mixing tube are reflected at the reflector and therefore are reflected into the chamber.

Abstract: The display apparatus includes a backlight module, which includes a light source, a light-emitting surface, a light-emitting counter surface and a flexible circuit. The light-emitting counter surface is disposed opposite to the light-emitting surface. The flexible circuit is electrically connected with the light source, and has a portion covering the light-emitting counter surface.

Abstract: A light emitting assembly comprises a light source, a light emitting panel member having an input edge that receives light from the light source, and end edge and side edge reflectors. The panel member is received in a cavity or recess of a tray or housing. An additional component overlies the panel member. Light extracting deformities on or in a surface of the panel member cause light to be emitted from the panel member.

Abstract: This disclosure provides systems, methods and apparatus for providing illumination by using a light guide to distribute light. In one aspect, the light guide has a light input edge into which light is injected and transverse edges transverse to the light input edge. The transverse edges are smooth and act as specular reflectors. The light input edge is rough and provides a diffusive interface. The light emitters are adjacent and centered along the light input edge, with the pitch of the light emitters being about ?L, where ?L is the distance between the transverse edges divided by the number of light emitters. The light guide can be provided with light turning features that redirect light out of the light guide. In some implementations, the redirected light can be applied to illuminate a display.

Abstract: A backlight module includes a light guide plate with a main body and a light source with a circuit board and a plurality of light bars. The main body has a light incidence surface and a light emitting surface. The light incidence surface has a plurality of accommodating grooves and the light emitting surface or the light incidence surface has a plurality of light-separation grooves which are perpendicular to the accommodating grooves. The accommodating groove has a first and a second light incidence parts. A reflecting layer is disposed on the surface of the circuit board being located between each two light bars. The light source is disposed on the light incidence surface and light bars are disposed for the accommodating grooves so as a predetermined distance located between the light bar and the second light incidence part is formed a light mixing space to reduce the production of bright lines.

Abstract: A surface light source device having a local dimming function and an LCD unit using the device can include a light guide having a top surface including a plurality of linear convexes and a bottom surface including a plurality of dots. The device can also include a reflective sheet located adjacent the bottom surface, a prism sheet located adjacent the top surface, a diffusing sheet located adjacent the prism sheet, and a pair of LED light sources located adjacent both light incident surfaces of the light guide and divided into a plurality of groups. Each light emitted from the groups can be configured to be emitted independently from a respective one of local domains on a light-emitting surface of the device. Therefore, the disclosed subject matter can provide a surface light source device having a local dimming function with a simple structure as with a conventional edge light type device.

Abstract: This invention relates to an illumination apparatus. The illumination apparatus comprises a light guide plate and a light source configured to emit light into the light guide plate through a first surface, and the light guide plate comprises a concentrator configured to direct incident light in the light guide plate so as to radiate in a direction substantially parallel to a preset plane. The preset plane is perpendicular to any one of the top surface and bottom surface of the light guide plate, and intersects the first surface and a second surface of the light guide plate or intersects the first surface and one of the side surfaces at an angle that is substantially larger than the critical angle of a total reflection. In this way, unwanted light loss in the light guide plate is reduced, and the distribution of the light intensity or luminance along the light guide plate is improved, i.e., a substantially uniform distribution of the light intensity can be achieved.

Abstract: A backlight unit of an embodiment includes: a light emitting module including a plurality of light emitting diodes and a module substrate on which the light emitting diodes are mounted; a bottom cover accommodating the light emitting module; a board on the bottom cover; a transformer mounted on a lower portion of the board, and including a core and a coil surrounding at least one portion of the core; a transformer cover covering the transformer; and a heat dissipating cover between the transformer cover and the bottom cover.

Abstract: Provided is a planar illuminating device having light source section (1) emitting linearly polarized laser light and having a light guide (12) with a rectangular parallelepiped shape having one main surface with a mirror array (12c) thereon. The mirror array (12c) has a plurality of reflecting surfaces totally reflecting laser light incident on an incident surface (12a), of the light guide, perpendicular to the one main surface and emits the laser light from an emitting surface (12b), of the light guide, perpendicular to the one main surface, wherein the reflecting surfaces are formed in a stepped manner. Further, the planar illuminating device includes a light-guiding plate (3) making the laser light, emitted from the light guide (12), incident on an incident surface (3a) of the light-guiding plate and emitting the laser light from an emitting surface (3b) of the light-guiding plate.

Abstract: This is directed to a LED light fixture having a light guide array with a retroreflective element used to redirect light into the light guide array, and methods for constructing the same. A LED light fixture includes a LED module providing light and an elongated light guide array placed adjacent to the LED module. Light emitted by the LED module propagates through the light guide array and is redirected by the light guide array into the environment of the fixture. To prevent light from propagating through the end of the light guide array opposite the LED module, the light guide array can include angled facets forming a retroreflective element at an end of the light guide array for redirecting light back into the LGA.

Abstract: The invention relates to a light guide (10) for illuminating a light output window (120) of an illumination system (100), the illumination system, a backlighting system (100) and a display device (200). The light guide comprises a first light guide part (10A) comprising a first light guide extension (70A) extending from a first edge wall (40A) of the first light guide part (10A), and comprises a second light guide part (10B) comprising a second light guide extension (70B) extending from a second edge wall (40B) of the second light guide part (10B), the first light guide extension (70A) being configured for positioning a first light input window (80A) at a side of the second light guide part (10?) facing a rear wall (30B) of the second light guide part (10B), the second light guide extension (70B) being configured for positioning a second light input window (80B) at a side of the first light guide part (10A) facing the rear wall (30A) of the first light guide part.

Abstract: An optical film assembly includes a first prism film and a first diffusing film. The first diffusing film is disposed on the first prism film. The first prism film has a plurality of prism structures arranged in parallel with each other and arranged in an orientation direction. The first diffusing film has a tensile direction. An angle included between the tensile direction of the first diffusing film and the orientation direction of the prism structures of the first prism film is between 50 degrees and 130 degrees.

Abstract: A lamp comprises: a dish-shaped (parabolic); an LED operable to generate excitation light; a light guide configured to extend along an axis of the reflector, wherein light generated by the at least one LED is coupled into a first end of the light guide and wherein light is emitted from the light guide at a light emitting surface that is in proximity to a second end of the light guide and at least one phosphor material provided as a layer on at least a part of the light emitting surface of the light guide. An LED light bulb is also disclosed.

Abstract: Surface light source device includes: point light sources (13); light guide plate (1) having (i) two end parts in length direction, one of which serves as incident surface (2), and (ii) two end parts in thickness direction which serve as exit surface (7) and back surface (8), light guide plate (1) directing light, emitted from point light sources (13), incident on incident surface (2), so as to cause light to exit from substantially entire area of exit surface (7); and reflector (14) which reflects, toward incident surface (2), part of light which is emitted from point light sources (13) and is then reflected from incident surface (2). Incident surface (2) has elliptic arc (10) which is concave part having surface shape along elliptic arc identical to elliptic arc which is part of ellipse (31) having two focal points corresponding to point light sources (13) and reflector (14).

Abstract: Disclosed is a light emitting device module, which includes a circuit board having at least two cavities, a reflective layer formed on a surface of each cavity, and a light emitting device package disposed in each cavity. The light emitting device package includes a package body and a light emitting device disposed on the package body, the light emitting device being electrically connected to a first lead frame and a second lead frame.

Abstract: An illumination device (10) includes (i) a light guide plate (1) made from a light-transmitting material, (ii) a light extracting layer (7) including (a) a light reflecting member, which is provided on a first surface (lower surface (1a)) side of the light guide plate (1), for reflecting light (3) that enters from the light guide plate (1) such that the light (3) is emitted from a second surface (upper surface (1b)) side of the light guide plate (1), the second surface facing the first surface of the light guide plate (1) and (b) a shutter member for switching between transmission and non-transmission of light, and (iii) LEDs (2) each serving as a primary light source. The light guide plate (1) includes a plurality of pillar regions (4) which are provided in a direction perpendicular to an in-plane direction of the light guide plate (1), and which have a refractive index different from that of the light-transmitting material.

Abstract: A one-way see-through illumination system is constructed from a light guide panel, a front-illumination image film, and a light injector. The light injector injects light into the light guide panel at a suitable angle for total internal reflection of the injected light at the surfaces of the light guide panel. The image film includes a half-toned front-illuminable image pattern that extracts light from the light guide panel. When active, light from the light guide panel front illuminates the image pattern for viewing by a front-side view, while a back-side viewer can see through the image pattern.

Abstract: A backlight unit including a light guide plate, a light source comprising a plurality of color light emitting diodes, and an optical member comprising a diffusion sheet on the light guide plate, wherein the diffusion sheet comprises a plurality of color patterns that are located outside of an area that overlaps with an active area, where each of the color light emitting diodes is positioned in an area adjacent to the color pattern of a different color, and a liquid crystal display including the same are disclosed.

Abstract: An embodiment discloses a light emitting device package including a first lead frame and a second lead frame disposed spaced from each other, a light emitting device disposed on the first lead frame, and a reflective sidewall disposed on the first lead frame and the second lead frame to surround the light emitting device, wherein a portion of the reflective sidewall has a height higher than the other portion of the reflective sidewall.

Abstract: A light source module includes a transparent element, a plurality of light-emitting devices, and a plurality of light diffusion micro-structures. The transparent element includes a transparent substrate having a light exiting surface and a bottom surface opposite to the light exiting surface, a plurality of first notches, and a plurality of second notches. The first notches are sunken at the light exiting surface. There is a reflection surface in each of the first notches. The second notches are respectively opposite to the first notches and sunken at the bottom surface. The second notches respectively have a light incident curve-surface. The light-emitting devices are respectively disposed beside the light incident curve-surfaces. Each of the light-emitting devices has a light exiting surface capable of providing a light beam. The light exiting surface is not conformal to the light incident curve-surface. The light diffusion micro-structures are disposed on the bottom surface.

Abstract: The present invention discloses a backlight module having a light guide plate and a plurality of backlight sources. The light guide plate contains a plurality of grooves which divide the light guide plate into several domains. All of the grooves have a specific cross section which may be triangular, trapezoidal, or convex curved in shape. The light guide plate can reflect light emitted by the backlight sources through specific angles resulted from the specific cross sections of the grooves. Therefore, it is entirely possible to achieve the target of local dimming of the backlight module by means of a design of positions of the grooves and of angles of the cross sections.