Abstract: A surface light source includes a light source facing an end face of a lightguide plate, a rectangular-shaped frame surrounding an outer peripheral surface of the lightguide plate, and a reflecting sheet is disposed on a lower surface of the frame. The frame is formed such that an inside frame portion is made of a white resin and an outside frame portion is made of a black resin. The inside frame portion and the outside frame portion are integrally molded by a two-color molding method.

Abstract: A light source module with which light leakage can be efficiently reduced and an increase in costs can be suppressed. A backlight module 10 according to an embodiment of the present invention includes an optical waveguide 130 which receives light emitted from an LED group 104 at an incident surface 131 and emits the light from an emission surface 133; and a P-chassis 180 that presses the optical waveguide 130 from an emission-surface-133 side and that is arranged so as to cover a portion of the emission surface 133 near the incident surface 131. A center position of a light emitting surface of the LED group 104 is located closer to the emission surface 133 than a centerline of the incident surface 131.

Abstract: A light source device includes: a light-emitting part; a light guide including in its center a columnar part whose central axis direction is a lengthwise direction, that guides light input into an end face from the light-emitting part, and outputs light from a side face of the columnar part; a light guide holder that covers an end of the light guide except for at least part of the end face; and a support part, including a through-hole that penetrates from one face to another face formed therein, that holds an end of the light guide holder on a side of a first opening on the one face of the through-hole so as to allow sliding in the lengthwise direction, and light is input into the light guide via a second opening on the other face of the through-hole.

Abstract: According to one embodiment, an organic electroluminescent device includes a first electrode, a second electrode, an organic light emitting layer and an optical layer. The first electrode has a first major surface and a second major surface opposite to the first major surface and is light transmissive. The second electrode faces a portion of the first major surface. The organic light emitting layer is provided between the first electrode and the second electrode. The organic light emitting layer and the first electrode are disposed between the optical layer and the second electrode. The optical layer is able to transit between a first state where a traveling direction of light emitted from the organic light emitting layer is changed and a second state having a smaller degree of the change in the traveling direction of the light than the first state.

Abstract: A backlight module includes a light guide plate and a light emitting unit. The light guide plate has a first side surface, a second side surface, and a third side surface. The first side surface is located opposite to the second side surface. A height of the first side surface is greater than a height of the second side surface. The third side surface is located between the first side surface and the second side surface and has a light entrance surface and a light exit surface. The light entrance surface is connected to the first side surface and the light exit surface. The light exit surface is connected to the second side surface. An included angle is formed between the light entrance surface and the light exit surface. The light emitting unit is disposed on the light entrance surface.

Abstract: To alleviate brightness unevenness arising from optical sheet bending or wrinkling, as well as brightness unevenness caused by light leakage, and improve light usage emitted by a light source unit, provided is a backlight unit (1) comprising a light guide plate alignment unit (5) which is positioned to maintain a given location with respect to a back chassis (10), latches with a depression part (23), and further comprising a depression part (51) which is formed such that a portion of an optical sheet (4) is inserted.

Abstract: A panel guide has a first wall portion standing face to face with a frame, and by the first wall portion having its top in contact with the frame, the panel guide is supported by the frame and forms a space between the panel guide and the frame.

Abstract: A backlight assembly includes a light guide plate (LGP) having a stepped portion formed at a corner of the LGP, an optical sheet disposed over the LGP and a receiving container receiving the LGP and the optical sheet. The receiving container includes a bottom plate, first through fourth sidewalls and a first LGP fixing portion. The second sidewall is adjacent to the first sidewall. The third sidewall faces the first sidewall. The fourth sidewall faces the second sidewall. The first through fourth sidewalls are extended upwardly from edge portions of the bottom plate. The first LGP fixing portion is formed at the first sidewall such that the LGP fixing portion corresponds to the stepped portion of the LGP. Therefore, a display device is easily assembled. Furthermore, a defilement that may occur during an assembling process may be reduced to enhance productivity.

Abstract: A back light module includes a bezel, a light source assembly and a first circuit board. The bezel has a carrier surface, a first back surface opposite to the first back surface, and a through hole passing through the bezel from the carrier surface to the first back surface. The light source assembly is disposed on the carrier surface, and the first circuit board is disposed on the first back surface. The light source assembly includes a second circuit board and a plurality of light emitting elements. The second circuit board is electrically connected to the first circuit board by its conductive pin set via the through hole. Since the light source assembly is electrically connected to the first circuit board by the conductive pin set, the assembly process is simplified and the cost is decreased. A display device using the back light module is also provided.

Abstract: A combination mirror and media display device assembly is provided. The combination mirror and media display device includes a mirror platform having a media display device viewing area and a media display device coupled to the mirror platform. The media display device is positioned to display images through the media display device viewing area.

Abstract: The objective of the present invention is to orient an LED emitting surface not toward an upper surface, but rather toward a portion of a light guide plate on which the light is incident by using the scattering pattern of the light guide plate, and then maintain the uniformity of the distribution of the light emitted from the light guide plate by means of a scattering pattern of the light guide plate, in order to increase light-emitting efficiency.

Abstract: The backlight device (24) is provided with a bottom plate (22a), a light-guide plate (20) that has a light-receiving face (20a) on a side face and that is arranged such that the back surface of the plate is oriented to face the front of the bottom plate (22a), an LED light-source (28) that is arranged opposite to the light-receiving face (20a) on the front surface of the bottom plate (22a), a reflective sheet (26) that is arranged to be in contact with the bottom surface of the light guide plate (20), a protruding member (38) that is formed so as to protrude from the front surface of the bottom plate (22a) and that has, as top surfaces, a first surface (38a) provided so as to contact the surface of the reflective sheet (26) on the side opposite of the bottom plate and a second surface (38b) that is separated from the first surface (38a) by a step (38c) and that, between the light-receiving face (20a) and the LED light source (28), is higher than the back surface of the light guide plate (20).

Abstract: The present invention is related to a technology of liquid crystal display, and specially to a fixture incorporated in a backlight module for the liquid crystal display. The fixture for backlight module comprises a backboard having a bottom board, a sidewall, and a bent portion. The sidewall has a first end and a second end, and the bottom board being interconnected with the first end. The bent portion is interconnected to the second end, and arranged on an outside of the sidewall, and creates an angle with respect to the sidewall. A plastic frame is defined with opening aligned and enveloped onto the bent portion so as to securely assemble the plastic frame to the backboard. The advanced and preferred interengagement between the backboard and the plastic frame can not only readily implement into the backlight module in which the light strip and backboard are made individually, but also can be fitted into the backlight module in which the backboar is integrally formed with driving circuit for light strip.

Abstract: An illumination device capable of increasing the luminance of an entire screen is provided. In this illumination device (10), a plurality of scattering dots (12e) are disposed on a light guide plate (12), and a plurality of high-luminance center points (intersections (O1)) are arranged in a matrix at prescribed intervals on the light guide plate. The density of the scattering dots in areas (S1a), the center of which is the high-luminance center point, is higher than the density of the scattering dots in an area (S1b) outside the areas (S1a).

Abstract: A backlight unit includes: a light guide plate of an entirely flat structure; a light emitting element disposed on at least one side of the light guide plate; a first reflection part disposed under the light guide plate and having one side thereof extended to a region where the light emitting element is positioned; a second reflection part disposed on the light emitting element; and a housing for accommodating the light guide plate, the light emitting element, and the first and second reflection parts, wherein the housing has a second side which is vertically extended upwards with respect to a first side which defines a lateral cross section of the housing in which the light emitting element is accommodated as the lower side, and a third side which is vertically extended inwards with respect to the second side.

Abstract: The present invention relates to a heat radiating printed circuit board (PCB) and a chassis assembly having the same, the heat-radiating PCB characterized by: a circuit pattern unit mounted with a light emitting diode; and one or more mounting units bent from the circuit pattern unit to be fixed at a chassis providing a lightguide path of a backlight unit, where one of the mounting units is mounted to the chassis via a thermal interface material to maximize the heat radiating characteristic of the PCB and to reduce the manufacturing cost.

Abstract: A tiled display device includes a plurality of display devices defining an image display part, the image display part divided into a central portion and an outer edge portion, a support frame tiling the plurality of display devices side by side, and a plurality of light guides, each light guide disposed on each of the display devices, wherein the brightness of an image displayed at the outer edge portion is higher than that of an image disposed at the central portion.

Abstract: The present invention provides a backlight module including a waveguide, a backboard, and a light source, wherein the waveguide is disposed onto the backboard, and the light source is arranged adjacent to a light incident surface of the waveguide, wherein the backlight module includes at least a limiter securely disposed onto the backboard and abuts against to the light source so as to ensure a preset distance between the light source and the incident surface of the waveguide. According to the backlight module and the liquid crystal display, by providing the limiter of the backlight module to abut against the light source, the coupling distance between the light source and the incident surface of the waveguide can be effectively kept constant without being compromised to zero (0) as resulted from expansion under heat or moisture or the accuracy during installation. By this arrangement, the leakage of the backlight module can be readily prevented.

Abstract: An optical film according to one embodiment includes at least one stack having a plurality of basic pairs, each pair being composed of a first layer and a second layer having different refractive indices and being laminated. The number of the stacks, a difference in the refractive index between the first and second layers, and the number of the basic pairs are set such that a reflectance spectrum of the at least one stack as a whole matches a target reflectance spectrum. The target reflectance spectrum includes first and second reflectance spectrum components corresponding to first and second polarized light beams in a predetermined wavelength range, wherein each of them is a spectrum having at least one reflective peak region including a spectrum region having a reflectance of 50% or more and a wavelength width of 20 to 60 nm.

Abstract: A display device includes a display panel, a protective member, a light guide member, a light source, and a light leakage preventing member. The display device includes a display surface concavely curved in a first direction. The light leakage preventing member is coupled to the protective member to be movable according to expansion or contraction of the light guide member. The light leakage preventing member contracts and expands according to the expansion or contraction of the light guide member, and includes an elastic part to prevent the light source from being damaged by the expansion of the light guide member.

Abstract: An illumination apparatus includes a light-emitting unit and an apparatus-holding section. The light-emitting unit includes a light guide plate with a center portion being opened, a light source that inputs light from a side of an inner wall of the light guide plate, and a reflective film formed on a side of an upper surface of the light guide plate to reflect light propagated in the light guide plate. The light-emitting unit outputs light from a light output surface in opposite to the upper surface of the light guide plate. The apparatus-holding section detachably holds an electronic apparatus, is capable of removing the electronic apparatus from a side of an output direction of light from the light output surface, and includes a center of a surface parallel to the light output surface, which is positioned inside a light output area of the light output surface.

Abstract: A first light guide route is defined as a route including a first light source, a first light source light emitting end, a first optical connection terminal, a first light guide member, and a first light emitting member, and a second light guide route is defined as a route including a second light source, a second light source light emitting end, a second optical connection terminal, a second light guide member, and a second light emitting member. The first light source light emitting end and the first optical connection terminal are constituted based on desirable first optical specifications, and the second light source light emitting end and the second optical connection terminal are constituted based on desirable second optical specifications, so that the first or second light guide route can be constituted.

Abstract: An automotive lamp includes an LED and a light guide. The light guide has the light, emitted from the LED, enter through an incident surface and emits the light frontward from an emission surface by guiding the light inside the light guide. The light guide includes a plurality of steps on a rear face side of the peripheral surface of the light guide. With the plurality of steps, the light traveling inside the light guide is reflected toward the emission surface. The pitch between each of the plurality of steps is set to 0.5 mm or below.

Abstract: In one embodiment, an illumination device includes a light-guiding unit having a light output surface which outputs light and a back surface facing the light output surface, wherein the light-guiding unit has a curved surface in a region of the back surface farther than a first position on the back surface that is away by a first distance from an axis passing the light output surface and the back surface, and a rough surface in a region of the light output surface farther than a second position on the light output surface that is away by a second distance from the axis in a same direction as a direction from the axis toward the first position, and where an intersection of the axis and the back surface is an origin point, and a direction of the axis from the back surface to the light output surface is positive, a normal line of the curved surface intersects with the axis at the positive side of the axis, and an angle formed by a normal line vector at the second position in a direction toward the light output s

Abstract: An illumination device 12 includes a light source 17; a light guide plate 16 having a light-receiving face 16b and a light-exiting surface 16a; a chassis 14 having a body 141 covering a rear surface 16c of the light guide plate 16, a strip-shaped projecting part 142 projecting beyond the light-receiving face 16b, and a straight edge 143 extending in a straight line parallel with the light-receiving face 16b; a light source support member 19 having a support part 191 supporting the light source 17, and an attachment part 192 having an edge 193 that extends beyond the straight edge 143 of the chassis 14 and that extends in a straight line parallel with this straight edge 143, the attachment part 192 being attached to the front side of the projecting part 142; a screw 21 penetrating the projecting part 142 and the attachment part 192 from the rear side of the projecting part 142; and a screw-receiving part 131 that clamps the projecting part 142 and the like between the screw 21 and the screw-receiving part 131

Abstract: In a liquid crystal device, when the local dimming is adopted, at a light guide plate of a lighting device, light guide plate portions having a trapezoidal planar shape where two sides facing each other in the Y-axis direction have different lengths are arranged in the X-axis direction to have reverse orientations in the Y-axis direction. A light emitting element emits the light of a light source from the end surface of the light guide plate portion which is located at a short side into the light guide plate portion. A light scattering surface is installed at the space between the light guide plate portions.

Abstract: Disclosed is a perforated light-guiding plate, comprising a plate body (1) and a light source (3) arranged on a side of the plate body. A light-guiding hole (2) is arranged on at least one side face of the plate body. The present disclosure further discloses a method for manufacturing the perforated light-guiding plate. Various pores are fabricated on the surface of the light-guiding plate. The light distribution curve is regulated and controlled by punching holes inside the light-guiding plate and setting a direction of a punched hole (the light distribution curve of a traditional light-guiding plate is constant), thereby addressing an issue in which the light-guiding plate can only be used as an LED panel light by depending on a diffusion plate and improving practicability and artistry of the light-guiding plate.

Abstract: Disclosed are a static-free light guide plate and a backlight module. The static-free light guide plate comprises an incident plane, a bottom reflection plane, a side reflection plane and an out light plane. At least one layer of optical thin film material for increasing out light effect is positioned on the surface of the out light plane. The bottom reflection plane is positioned on the metal back plate. The static-free light guide plate further comprises interconnected conductive bands positioned at the side plane of the optical thin film material, non-incident portion of the incident plane, the bottom surface of the bottom reflection plane and the side reflection plane. With the conductive bands positioned at the side surface of the optical thin film material and connected to the metal back plate, the electrostatic generated on the light guide plate is transferred to achieve the purpose of protecting the electronic device, such as LEDs.

Abstract: A backlight unit being scan-driven is discussed. The backlight unit according to an embodiment includes light sources configured to emit light, and a light guide plate disposed parallel to the light sources and configured to convert spotted lights entered from the light sources into two-dimensional light. The light guide plate includes a plurality of air barriers arranged at a fixed interval and configured to guide lights from the light sources in blocks with a width of the fixed interval.

Abstract: Disclosed is a transparent display device including a light guide plate formed with a plurality of concave patterns at the lower surface thereof to totally reflect polarized light entered in a lateral direction while transmitting natural light entered from a lower direction therethrough; a light source disposed in a lateral direction of the light guide plate to emit visible light including first and second polarized lights; a first polarizing plate disposed at a lateral portion of the light guide plate to transmit either one of the first and second polarized lights through the light guide plate; a liquid crystal panel for driving liquid crystals to change the phase of the polarized light; and a second polarizing plate for controlling an amount of the polarized light according to the changed phase of the polarized light.

Abstract: A coupling element (14) for use in a touch-sensitive apparatus is arranged to transfer light between an electro-optical device (2) and a panel (4) for light transmission. The electro-optical device (2) is an emitter or a detector and has an operative solid angle given by orthogonal device divergence angles. The coupling element (14) is an optical component with a first light transmission surface (21) for facing the electro-optical device (2), and a second light transmission surface (22) for mounting on the panel (4). The coupling element (14) has an optical structure (23) that directs the light between the first and second light transmission surfaces (21, 22) by one or more reflections while expanding one device divergence angle (?x) into a component divergence angle at the second light transmission surface (22). Thereby, the component divergence angle defines a divergence (?p) in the plane of the panel (4) with respect to light propagating by internal reflections inside the light transmissive panel (4).

Abstract: A lamp comprises a light guide, a light source and a subject member; wherein an exit surface of the light guide is arranged at a position exposed to a front side of the subject member or located on a rear side of the subject member while being visible from the front side; wherein a surface of a light-guiding part about the exit surface located on the rear side is covered with paint or an opaque member so that the exit surface seen from the front side appears to have the same color as with surroundings thereof; wherein the subject member is molded by an opaque material or the rear side about the exit surface is covered with the paint or the opaque member; and wherein the light guide and the subject member are molded integrally with each other.

Abstract: A heat dissipation structure of tablet display member, which is applicable to an electronic product. The heat dissipation structure includes: at least one heat conduction plate assembly partially positioned beside a light source assembly of the display member, the heat conduction plate assembly having a heat conduction face adjacent to the light source assembly; and a heat spreader able to quickly transversely conduct heat. The heat spreader is attached to the heat conduction plate assembly. The heat spreader has a proximal-to-heat-source section proximal to the light source assembly and a distal-from-heat-source section distal from the light source assembly. The heat conduction plate assembly and the heat spreader cooperate with each other to conduct and spread the heat of the heat source in different directions so as to uniformly dissipate the heat and avoid accumulation of the heat around the heat source.

Abstract: A display apparatus includes an LCD panel, a resin rear cabinet facing a back of the LCD panel, and a backlight unit that is supported by the rear cabinet. The backlight unit includes a light source, a light guide plate into which light from the light source enters through a side surface and exits through a main surface toward the back of the LCD panel, and a heat sink supported by the rear cabinet and attached to the light source. The rear cabinet includes an integrally formed resin protrusion passing through the heat sink and supporting the light guide plate, and positioning of the light source is determined by a contact surface thereof with the heat sink and positioning of the light guide plate is determined by a contact surface thereof with the protrusion so that optical axes of the light source and the light guide plate are aligned.

Abstract: A lighting apparatus includes a light-guiding plate and a lighting unit. The light-guiding plate includes a light-incident surface and a light-emitting surface. The lighting unit includes a first light source, a second light source and a circuit board. The first and second light sources are disposed on the circuit board, and the light emitted by the first and second light sources enters into the light-guiding plate through the light-incident surface and exits the light-guiding plate through the light-emitting surface. A first distance from the first light source to a reference line of the light-incident surface is not equal to a second distance from the second light source to the reference line.

Abstract: A display screen of an electronic device may be supported by one or more subassemblies positioned between the display screen and a printed circuit board to which the display screen is secured. Each subassembly is able to act as an independent suspension for the display screen and is able to cushion the display screen by absorbing mechanical tolerances and mechanical shock and vibration. The subassemblies may be mounted on the printed circuit board using surface mount technology.

Abstract: According to one embodiment, an electronic apparatus includes a housing, a panel, and a light source. The panel includes a display screen. The housing includes a first wall and a second wall. The first wall includes an opening exposing the display screen. The second wall is opposite to the first wall. Light from the light source reaches the panel through the second wall.

Abstract: A display apparatus includes a display panel, a first covering part, an upper frame and a lower frame. The first covering part is disposed on the display panel. The upper frame is disposed under the first covering part and includes a first combining portion. The lower frame is combined with the upper frame through the first combining portion, and overlaps a peripheral portion of the display panel.

Abstract: A liquid crystal display device (10) includes: LEDs (17); a liquid crystal panel (11); a light guide plate (16); an exterior member that constitutes the exterior of the liquid crystal display device (10), the exterior member including a frame (13) and a chassis (14) that hold the liquid crystal panel (11) and the light guide plate (16) by sandwiching these from the display surface (11c) side and the opposite side thereto, while housing the LEDs (17) between the frame (13) and the chassis (14); a screw member (SM) that affixes the frame (13) and the chassis (14) to each other by being disposed in an outer edge portion that surrounds the liquid crystal panel (11); wiring members (28) that are connected to the LEDs (17); and wiring passages (30) through which the wiring members (28) pass, the wiring passages being formed in the inner surfaces of the side walls (13b), which is the outer edge portions of the frame (13), the wiring passages being positioned adjacent to the screw member (SM) in the direction in whic

Abstract: A directional display may include a waveguide. The waveguide may include light extraction features arranged to direct light from an array of light sources by total internal reflection to an array of viewing windows and a reflector arranged to direct light from the waveguide by transmission through extraction features of the waveguide to the same array of viewing windows. The brightness of the directional display can be increased. An efficient and bright autostereoscopic display system can be achieved.

Abstract: Disclosed is a backlight unit and a display device using the same, which includes a first reflector, a second reflector 300 and at least one light source module 100 disposed between the first and second reflectors, wherein a back surface of the first reflector comprises an inclined plane 201 and a flat surface 202, with facing the second reflector, and the inclined plane is adjacent to the light source and the flat surface is extended from an end of the inclined plane, with the inclined plane and the flat surface being collinear.

Abstract: A backlight module and a display module are provided. The backlight module includes a back frame, a light guide plate, a heat sink, a light source module and a carrying frame. The light guide plate has a light emitting top surface and a light incident side surface, and is disposed on the back frame. The heat sink is disposed between the back frame and the light guide plate, and a side surface of the heat sink has a first fixing portion exposed outside the back frame. The light source module is disposed on the heat sink and faces the light incident side surface of the light guide plate. The carrying frame includes a first side wall, and is disposed around the light guide plate. The first side wall has a second fixing portion engaged with the first fixing portion, and is located outside the back frame.

Abstract: A display device includes a display module configured to output image information, a front case configured to cover a front edge portion of the display module, with an opening formed in a central portion, and a rear case coupled to the front case to cover a back side of the display module, with a rib projected therefrom to support the back side of the display module. The display module includes a display panel, a light guide unit arranged on the back side of the display panel, a back cover configured to cover the first lateral side of the light guide unit and a predetermined portion of the back side of the light guide unit, and a light source coupled to the back cover. The display device may reduce the material cost and the overall weight by omitting a metallic top cover and reducing the size of the back cover.

Abstract: A backlight device wherein LEDs which are arranged side by side at a first arrangement interval (P1) are provided to each LED unit. The LED units are mounted to a flexible board at a second arrangement interval. A light guide plate is disposed in such a manner that an end surface thereof is spaced from the LEDs by a distance (H). The light guide plate is disposed so as to satisfy the following relationship: first arrangement interval (P1)<distance (H)<second arrangement interval (P2). Specifically, the LEDs are arranged side by side in such a manner that the first arrangement interval (P1) is not less than 0.1 mm but not greater than 3 mm and the second arrangement interval (P2) is not less than 5 mm but not greater than 15 mm. The light guide plate is disposed in such a manner that the distance (H) is not less than 1 mm but not greater than 7 mm.

Abstract: A backlight assembly includes a first light guide member; a second light guide member overlapping the first light guide member; a groove defined in the second light guide member; and a light source unit in the groove. The light source unit generates and supplies light to the first light guide member and the second light guide member.

Abstract: A liquid crystal display device (10) related to the present invention is provided with an LED (17); a heat-dissipating member (19) mounted with the LED (17); a liquid crystal panel (11) that uses light from the LED (17) to display; a light guide plate (16) that is disposed on a side of the liquid crystal panel (11) opposite to the display surface (11a), the light guide plate being disposed such that an end surface thereof faces the LED (17); a chassis (14) arranged on a side of the light guide plate (16) opposite to the liquid crystal panel (11); a frame (13) that is arranged on the display surface (11a) of the liquid crystal panel (11), the frame holding the liquid crystal panel (11) and the light guide plate (16) by sandwiching the liquid crystal panel (11) and the light guide plate (16) with the chassis (14) while housing the LED (17) and the heat-dissipating member (19) therein, the frame constituting the exterior of the liquid crystal display device (10); and a protruding member (21) that protrudes from

Abstract: A decoration element comprising a light guiding shell, a light guiding panel and a light source is provided. The light guiding shell has a light entrance, and comprises a first inclined plate, a second inclined plate, a first flat plate and a second flat plate. The first inclined plate is disposed on one side of the light entrance, while the second inclined plate is disposed on the other side of the light entrance. The first flat plate is connected to the first inclined plate, and the second flat plate is connected to the second inclined plate. The light guiding panel is disposed in the light guiding shell. The light source is disposed in the light entrance. The included angel between the first inclined plate and the second inclined plate ranges between 60 and 160 degrees.

Abstract: A display device includes a display device body, a display portion arranged on the front side, a light source, a light source substrate, a light guide plate having a light incident surface, and a heat sink arranged to be opposed to the light incident surface of the light guide plate between the light guide plate and the light source substrate, including a light source arrangement hole configured to arrange the light source and a spacer portion arranged to be opposed to the light incident surface of the light guide plate between the light guide plate and the light source substrate and keeping an interval between the light incident surface of the light guide plate and the light source at a prescribed interval.

Abstract: An apparatus comprising a transparent or translucent panel and a light module comprising a plurality of light emitting diode (LED) devices. The light module is mechanically connected to an edge of the panel with the LED devices oriented to inject light into the edge of the panel.

Abstract: A light guide plate includes a light introduction unit that confines light incident from a point light source through the light incident surface and a light guide plate body. The light introduction unit includes an inclined surface inclined toward an end of a surface of the light guide plate body from a surface in a portion having the thickness greater than that of the light guide plate body. The light guide plate body includes a directivity conversion pattern located between the light introduction unit and an effective illumination region of the light guide plate body. The directivity conversion pattern converts a directivity direction of the light passing through an effective illumination region from the light introduction unit such that an angle formed by the light and a direction perpendicular to the light incident surface increases when viewed from a direction perpendicular to a light exit surface.