Abstract: An exemplary one-piece backlight module (200) includes a brightness enhancement unit (240); and a light emitting unit (260) including a first electrode layer (261), a second electrode layer (264), and a light emitting layer (262) between the first and second electrode layers. The brightness enhancement unit and the light emitting unit are stacked one above the other. A liquid crystal display device using the backlight module is also provided.

Abstract: A liquid crystal display (200) includes a transparent substrate (25), a light guide plate (28) disposed under the substrate, and a light source (29) disposed above the light guide plate at a thin side of the substrate. The light guide plate includes a top surface (280). An area of the top surface corresponding to the light source defines a light incident area, and another area of the top surface corresponding to the substrate defines a light emitting area.

Abstract: An exemplary brightness enhancement film (15) includes a main body (154), a plurality of first prism structures (152), a plurality of second prism structures (156), and first and second protective layers (150, 158). The main body includes a first side, and a second side opposite to the first side. The first prism structures are formed at the first side. The second prism structures are formed at the second surface. The first protective layer covers the plurality of first prism structures, and the second protective layer covers the plurality of second prism structures.

Abstract: An exemplary liquid crystal display includes a liquid crystal panel (10), a light guide plate (12) located below the liquid crystal panel, an illuminator (16) located adjacent a side of the light guide plate, and an electrical connector (15) attached to a side of the light guide plate and receiving the illuminator therein. The illuminator is mechanically attached to the electrical connector, and contact points of the illuminator are in direct physical and electrical connection with corresponding contact points of the electrical connector.

Abstract: A planar display structure with LED light source includes a plane light source constituted by a plurality of LEDs and a light guide plate, wherein the light guide plate has a plurality of recesses that the above LEDs can be put into.

Abstract: A flexible printed circuit board (FPC) with an extensible element for liquid crystal display (LCD) module is provided, wherein the extensible element can extend when it is forced. It can be used for different LCD modules to achieve the purpose of simplifying manufacturing process.

Abstract: A back-light module for an image scanning device includes a casing, a pair of tubular lamps, a light guide plate, and a frosted transparent plate. The image scanning device includes a document supporting plate and an optical scanning module movable in a longitudinal direction. A calibration of illumination with the back-light module is done by (1) activating the back-light module to project light onto the optical scanning module, (2) driving the optical scanning module in the longitudinal direction, (3) obtaining illumination signals associated with selected pixels of a longitudinally-extending calibration zone formed on the document supporting plate, (4) comparing each illumination signal with a reference to obtain a result and manipulating the result to obtain a calibration parameter, and (5) calibrating the illumination of pixels of an image with the corresponding calibration parameters in scanning a transmissive original document.

Abstract: An exemplary liquid crystal module (2) includes a transparent substrate (222) having a color filter, a light guide plate (221) opposite to the transparent substrate, and a liquid crystal layer (223) sandwiched between the transparent substrate and the light guide plate. The light guide plate has a thin film transistor (TFT) array formed thereat. The liquid crystal module includes the light guide plate having the TFT array formed thereon, instead of conventionally including a separate TFT array substrate in addition to a light guide plate. This configuration of the light guide plate decreases an overall thickness and weight of the liquid crystal module compared with a conventional liquid crystal module. Moreover, the process of assembly of the liquid crystal module is simplified.

Abstract: A liquid crystal display (200) includes a transparent substrate (25), a light guide plate (28) disposed under the substrate, and a light source (29) disposed above the light guide plate at a thin side of the substrate. The light guide plate includes a top surface (280). An area of the top surface corresponding to the light source defines a light incident area, and another area of the top surface corresponding to the substrate defines a light emitting area.

Abstract: An exemplary one-piece backlight module (200) includes a brightness enhancement unit (240); and a light emitting unit (260) including a first electrode layer (261), a second electrode layer (264), and a light emitting layer (262) between the first and second electrode layers. The brightness enhancement unit and the light emitting unit are stacked one above the other. A liquid crystal display device using the backlight module is also provided.

Abstract: An exemplary LCD device (2) includes a liquid crystal panel (23), a light source (25), and a polarizer (24). The polarizer has a multilayer structure having a polarizing layer (245) and a light guide layer (247). The polarizer is adjacent to a main face of the liquid crystal panel. The light source is disposed adjacent to a peripheral edge of the light guide layer. The light source and the polarizer cooperate to provide a substantially planar light source to illuminate the liquid crystal panel.

Abstract: An exemplary liquid crystal display includes a liquid crystal panel (10), a light guide plate (12) located below the liquid crystal panel, an illuminator (16) located adjacent a side of the light guide plate, and an electrical connector (15) attached to a side of the light guide plate and receiving the illuminator therein. The illuminator is mechanically attached to the electrical connector, and contact points of the illuminator are in direct physical and electrical connection with corresponding contact points of the electrical connector.

Abstract: An exemplary brightness enhancement film (15) includes a main body (154), a plurality of first prism structures (152), a plurality of second prism structures (156), and first and second protective layers (150, 158). The main body includes a first side, and a second side opposite to the first side. The first prism structures are formed at the first side. The second prism structures are formed at the second surface. The first protective layer covers the plurality of first prism structures, and the second protective layer covers the plurality of second prism structures.

Abstract: The present invention provides a liquid crystal display device to protect device users from EMI coming from the liquid crystal display panel. The liquid crystal display device of the present invention comprises: a first substrate, wherein the substrate has a black matrix; a second substrate; a liquid crystal layer between the first substrate and the second substrate; and a first electro-magnetic interference shield layer on the first substrate, wherein the position of the first electro-magnetic interference shield layer corresponds to the position of the black matrix.

Abstract: An exemplary liquid crystal module (2) includes a transparent substrate (222) having a color filter, a light guide plate (221) opposite to the transparent substrate, and a liquid crystal layer (223) sandwiched between the transparent substrate and the light guide plate. The light guide plate has a thin film transistor (TFT) array formed thereat. The liquid crystal module includes the light guide plate having the TFT array formed thereon, instead of conventionally including a separate TFT array substrate in addition to a light guide plate. This configuration of the light guide plate decreases an overall thickness and weight of the liquid crystal module compared with a conventional liquid crystal module. Moreover, the process of assembly of the liquid crystal module is simplified.

Abstract: A back-light module for an image scanning device includes a casing, a pair of tubular lamps, a light guide plate, and a frosted transparent plate. The image scanning device includes a document supporting plate and an optical scanning module movable in a longitudinal direction. A calibration of illumination with the back-light module is done by (1) activating the back-light module to project light onto the optical scanning module, (2) driving the optical scanning module in the longitudinal direction, (3) obtaining illumination signals associated with selected pixels of a longitudinally-extending calibration zone formed on the document supporting plate, (4) comparing each illumination signal with a reference to obtain a result and manipulating the result to obtain a calibration parameter, and (5) calibrating the illumination of pixels of an image with the corresponding calibration parameters in scanning a transmissive original document.

Abstract: A back-light module for an image scanning device includes a casing, a pair of tubular lamps, a light guide plate, and a frosted transparent plate. The image scanning device includes a document supporting plate and an optical scanning module movable in a longitudinal direction. A calibration of illumination with the back-light module is done by (1) activating the back-light module to project light onto the optical scanning module, (2) driving the optical scanning module in the longitudinal direction, (3) obtaining illumination signals associated with selected pixels of a longitudinally-extending calibration zone formed on the document supporting plate, (4) comparing each illumination signal with a reference to obtain a result and manipulating the result to obtain a calibration parameter, and (5) calibrating the illumination of pixels of an image with the corresponding calibration parameters in scanning a transmissive original document.

Abstract: An exemplary backlight module (20) includes a light guide plate (21) having an incident surface (211) and a side surface (714) between an emission surface (212) and a bottom surface (213), the bottom surface being opposite to the emission surface, the side surface being substantially perpendicular to the incident surface; a light source (22) opposite to the incident surface; and a light source cover (23) for reflecting light beams from the light source into the light guide plate. The light source cover is engaged with the light guide plate through a fastening mechanism. The light source cover surrounds one end of the light guide plate at the incident surface, thereby forming a space in cooperation with the end of the light guide plate, and the light source is received in the space.

Abstract: A backlight module (30) includes a light guide plate and a light source (210). The light guide plate includes a light incident surface, and a light diffusion cavity (308) disposed corresponding to the light incident surface. The light source is disposed adjacent to the light incident surface. One of surfaces (309) of the light guide plate defining the light diffusion cavity includes a plurality of prism structures, the surface being the one nearest to the light incident surface. Most of the light from the light source can be diffused uniformly by the prism structures before entering an efficient display area of the light guide plate. This reduces or eliminates what would otherwise be one or more dark areas in the light guide plate, and results in the uniform emitting of light from the light guide plate.

Abstract: A liquid crystal display (4) includes a first panel (41), a second panel (42) opposite to the first panel, a liquid crystal layer sandwiched between the two panels, a light guide plate (400) and an integrated circuit (IC) (43) facing with each other under the second panel, and a light source (410) disposed on the IC, wherein the light source faces an edge of the light guide plate, and the IC electrically connects directly with the light source. The LCD has a high space utilization ratio and has a compact size. Further, the light source electrically connects directly with the IC, whereby the LCD has been simplified.