Abstract: An object of the invention is to provide a liquid crystal display device having a so-called direct backlight where the interval between a number of rod light sources can be reduced, as well as a liquid crystal display device where the liquid crystal display panel and the backlight can be provided close to each other and the thickness of the module can be reduced. The liquid crystal display device is provided with a liquid crystal display panel and a backlight provided on the rear surface of this liquid crystal display panel, and the above described backlight is provided with a number of rod light sources aligned in a plane which faces said liquid crystal display panel and electrode supports for supporting the electrodes of the rod light sources on the same pole, which are provided on the same side of the rod light sources, together. The above-described electrode supporting the electrodes on the same pole together are formed of at least a separate first electrode support and second electrode support.

Abstract: A liquid crystal display device includes a liquid crystal display panel, a backlight and a power supply controlling circuit substrate. The backlight has a rectangular shaped frame member with long and short sides, light sources in rod form within the frame member, and first and second electrode supporting members electrically connected to opposite ends of the light sources. A wire guide member is arranged along one long side of the frame member and holds a wire for electrically connecting at least one of the first and second electrode supporting members to the power supply controlling circuit substrate. The wire guide member has a wire securing portion where the wire is secured and a temporary wire securing portion which at least temporarily secures the wire running between the wire securing portion and the power supply controlling circuit substrate.

Abstract: A liquid crystal display device having a direct backlight which uses a high-bright light source achieves both of a high efficiency and thin uniformity. In a liquid crystal display device which includes a liquid crystal panel, and a backlight unit which is arranged on a side of the liquid crystal panel opposite to a display screen of the liquid crystal panel, the backlight unit includes a housing, a plurality of light sources arranged in the inside of the housing, and a diffusion plate which is arranged between the plurality of light sources and the liquid crystal panel, the diffusion plate includes a plurality of light blocking regions at positions corresponding to the plurality of respective light sources, and the light blocking region at a center portion of the housing and the light blocking region at an edge portion of the housing exhibits transmissivities different from each other.

Abstract: The present invention provides a liquid crystal display device which can establish the reliable connection between a printed circuit board and a semiconductor device in spite of the simple constitution thereof. The liquid crystal display device includes a liquid crystal display panel, a printed circuit board arranged close to the liquid crystal display panel, and a semiconductor device arranged between the liquid crystal display panel and the printed circuit board in a striding manner. The semiconductor device includes a flexible printed circuit board and a semiconductor chip. The flexible printed circuit board includes a plurality of first terminals connected to the printed circuit board and a plurality of second terminals connected to a liquid-crystal-display-panel side.

Abstract: An object of the invention is to provide a liquid crystal display device having a so-called direct backlight where the interval between a number of rod light sources can be reduced, as well as a liquid crystal display device where the liquid crystal display panel and the backlight can be provided close to each other and the thickness of the module can be reduced. The liquid crystal display device is provided with a liquid crystal display panel and a backlight provided on the rear surface of this liquid crystal display panel, and the above described backlight is provided with a number of rod light sources aligned in a plane which faces said liquid crystal display panel and electrode supports for supporting the electrodes of the rod light sources on the same pole, which are provided on the same side of the rod light sources together.

Abstract: To provide a liquid crystal display device where supports for fluorescent lamps can be prevented from vibrating without affecting the ease of attachment of the supports for fluorescent lamps to the frame for the backlight. A liquid crystal display device having: a liquid crystal display panel; and a backlight having a light source for illuminating the liquid crystal display panel is characterized in that said backlight comprises at least a number of fluorescent lamps in rod form aligned in a plane facing said liquid crystal display panel, supports for fluorescent lamps for supporting the fluorescent lamps in rod form, and a frame to which the supports for fluorescent lamps are secured, and said supports for fluorescent lamps have an engaging portion for insertion into a hole created in said frame and the surface of said supports for fluorescent lamps where said engaging portion is formed has protrusions.

Abstract: The present invention provides a method for manufacturing a display device which can reliably form electrodes in a thin film transistor.

Abstract: The present invention provides a display device which can obviate the occurrence of a leak current in a thin film transistor. In a display device including a substrate, and gate signal lines, an insulation film, semiconductor layers and conductor layers which are sequentially stacked on the substrate, the conductor layer forms at least a drain electrode which is connected to a drain signal line and a source electrode which is connected to a pixel electrode, and the semiconductor layer is formed in a pattern in which the semiconductor layer has a protruding portion which protrudes outwardly from the conductor layer at a portion thereof except for a distal end of the drain electrode as viewed in a plan view.

Abstract: An absorption axis of a polarizer on a viewer's side is set to an arbitrary direction to cope with problems attributed to polarization sunglasses or the like. Video lines extend in a reference direction as a whole while being bent locally.

Abstract: The present invention provides a liquid crystal display panel which exhibits excellent durability by protecting portions of a substrate which are liable to be most easily cracked or chipped. In a liquid crystal display panel arranging a sealing material between a TFT substrate and a CF substrate, and holding a liquid crystal layer between the TFT substrate and the CF substrate, the CF substrate has one-side surface thereof formed in a recessed shape as viewed from above, a flexible printed circuit board is connected to a region of the TFT substrate where the CF substrate and the TFT substrate do not overlap with each other, and a sealing material is formed along a shape of the CF substrate. Portions where the TFT substrate and the CF substrate overlap with each other and correspond to both sides of the portion where the flexible printed circuit board is arranged can be formed such that the sealing material is filled in the portions with no gap.

Abstract: The present invention realizes an IPS liquid crystal display device which exhibits small directivity of viewing angle and high brightness. Below a pixel electrode having a comb-teeth-shaped electrode and having a laterally-extending trapezoidal profile, a planar common electrode not shown in the drawing is formed by way of an insulation film. When a video signal is applied to the pixel electrode, an electric field is generated between the pixel electrode and the common electrode via slit portions formed in the pixel electrode thus controlling liquid crystal molecules. The pixel electrodes are arranged in a packed state by alternately reversing the direction of the trapezoidal shape in the longitudinal direction. Since a light blocking film is not present between two pixel electrodes arranged adjacent to each other in the longitudinal direction, the liquid crystal display device can acquire high transmissivity. As a result, a liquid crystal display device having high brightness can be realized.

Abstract: The present invention provides a liquid crystal display device which can enhance the accuracy in feeding back a common potential applied to common voltage supply lines. A display panel includes a common bus line electrically connected to common electrodes and formed annularly on a periphery of the display region, a common sensing line for feeding back a voltage of the common bus line to a control printed circuit board, a scanning-signal-drive-circuit-use power source line for supplying electricity for driving a scanning signal drive circuit, and a common-voltage-supply-use line for supplying a common voltage to the common bus line. The common-voltage-supply-use line, the common sensing line and the scanning-signal-drive-circuit-use power source line are formed along one side of the display panel to which at least the scanning signal drive circuit is connected.

Abstract: A liquid crystal display device of the present invention includes a liquid crystal display panel, and a backlight arranged on a back surface of the liquid crystal display panel. The backlight includes a plurality of rod-shaped light sources, electrode fittings for holding the rod-shaped light sources, and side wall plates covering the electrode fittings. The electrode fittings are connected to a connection portion extending in the parallel-arrangement direction of the rod-shaped light sources. The side wall plate includes a plurality of projecting members arranged in parallel to each other in the extending direction of the connection portion. The connection portion includes positions which are brought into contact with the projecting members and portions which are not brought into contact with the projecting members. By adopting the above-mentioned constitution, the liquid crystal display device can reduce squeals and the like.

Abstract: The present invention provides a liquid crystal display device which reduces the occurrence of a squeal. A liquid crystal display device includes a liquid crystal display panel and a backlight arranged on a back surface of the liquid crystal display panel, wherein the backlight includes a base, a plurality of rod-shaped light sources arranged between the liquid crystal display panel and the base, electrode fittings for supporting electrode portions of the respective rod-shaped light sources, connection portions allowing the plurality of electrode fittings to be connected thereto and extending in the direction orthogonal to the longitudinal direction of the rod-shaped light sources, pushing members for pushing the connection portions toward a base side, and friction sound reducing members arranged between the connection portions and the pushing members and/or between the connection portions and the base side.

Abstract: A liquid crystal display device having a direct backlight which uses a high-bright light source achieves both of a high efficiency and thin uniformity. In a liquid crystal display device which includes a liquid crystal panel, and a backlight unit which is arranged on a side of the liquid crystal panel opposite to a display screen of the liquid crystal panel, the backlight unit includes a housing, a plurality of light sources arranged in the inside of the housing, and a diffusion plate which is arranged between the plurality of light sources and the liquid crystal panel, the diffusion plate includes a plurality of light blocking regions at positions corresponding to the plurality of respective light sources, and the light blocking region at a center portion of the housing and the light blocking region at an edge portion of the housing exhibits transmissivities different from each other.

Abstract: The present invention provides a liquid crystal display device which can enhance the reliability of electrical connection between electrodes and metal fittings even when the irregularities exist with respect to radii of rod-shaped light sources arranged in the inside of a backlight.

Abstract: A liquid crystal display device of the present invention includes a liquid crystal display panel, and a backlight arranged on a back surface of the liquid crystal display panel. The backlight includes a plurality of rod-shaped light sources, electrode fittings for holding the rod-shaped light sources, and side wall plates covering the electrode fittings. The electrode fittings are connected to a connection portion extending in the parallel-arrangement direction of the rod-shaped light sources. The side wall plate includes a plurality of projecting members arranged in parallel to each other in the extending direction of the connection portion. The connection portion includes positions which are brought into contact with the projecting members and portions which are not brought into contact with the projecting members. By adopting the above-mentioned constitution, the liquid crystal display device can reduce squeals and the like.

Abstract: A subject of the present invention is to provide a liquid crystal display device in which the reliability of electrical connection between electrodes and electrode fittings can be improved even if there are variations in diameter of the bar light sources arranged in the back light.