Abstract: In a TFT substrate, a common signal line is arranged on top of a common electrode and below a pixel electrode through intermediation of an insulating film. The metal piece in a pixel having a bright spot is irradiated with laser from the rear surface side of the TFT substrate. The common electrode and the pixel electrode are short-circuited by the melted metal piece.

Abstract: Provided is a liquid crystal display device, including: a TFT substrate including a pixel electrode; a liquid crystal layer provided on the TFT substrate; and a color filter substrate provided on the liquid crystal layer. The color filter substrate includes a light non-transmitting layer made of a material that limits transmission of light. The light non-transmitting layer includes: a display region including a hole portion filled with a color resist that transmits light; and a frame-shaped non-display region surrounding the display region. The frame-shaped non-display region has a slit formed in one side thereof, along the one side, the slit passing through the light non-transmitting layer. The slit is filled with a member made of the same material as a material of the color resist.

Abstract: In a TFT substrate, a common signal line is arranged on top a common electrode and below a pixel electrode through intermediation of an insulating film. The metal piece in a pixel having a bright spot is irradiated with laser from the rear surface side of the TFT substrate. The common electrode and the pixel electrode are short-circuited by the melted metal piece.

Abstract: Provided is a liquid crystal display device, including: a TFT substrate including a pixel electrode; a liquid crystal layer provided on the TFT substrate; and a color filter substrate provided on the liquid crystal layer. The color filter substrate includes a light non-transmitting layer made of a material that limits transmission of light. The light non-transmitting layer includes: a display region including a hole portion filled with a color resist that transmits light; and a frame-shaped non-display region surrounding the display region. The frame-shaped non-display region has a slit formed in one side thereof, along the one side, the slit passing through the light non-transmitting layer. The slit is filled with a member made of the same material as a material of the color resist.

Abstract: A liquid crystal display device includes a liquid crystal display panel which sandwiches liquid crystal in the inside thereof sealed by a TFT substrate, a color filter substrate and a sealing portion, and a flexible printed circuit board which is mounted on the TFT substrate, wherein the TFT substrate has an area larger than the color filter substrate. A plurality of scanning lines extend in a lateral direction and are arranged parallel to each other in a longitudinal direction, a plurality data signal lines extend in the longitudinal direction and are arranged parallel to each other in the lateral direction, and terminal portions corresponding to the scanning lines are formed on the TFT substrate, the terminal portion is arranged at a region that is not covered by the color filter substrate. The terminal portions and the scanning lines are connected by auxiliary lines and connection lines in order from the terminal portions.

Abstract: The present invention enhances a manufacturing yield rate relating to through holes. In a display device which includes a first conductive layer formed on a substrate and a second conductive layer which is formed on the first conductive layer by way of insulation films of two or more layers and connects the first conductive layer and the second conductive layer via a through hole, in the through hole portion, a side surface of an opening formed in the insulation film arranged on the first conductive layer side out of the insulation films of two or more layers includes a portion thereof which is covered with the insulation film arranged on the second conductive layer side out of the insulation films of two or more layers and an exposed portion.

Abstract: The present invention suppresses the spreading by wetting of an orientation film of a liquid crystal display panel outside a display region and, at the same time, maintains the uniformity of film thickness of the orientation film within a display region.

Abstract: The present invention provides a technique which can prevent the disconnection of lines in the vicinity of terminal portions formed on an end portion of a TFT substrate of a liquid crystal display panel. Terminal portions for supplying electric signals to scanning lines are formed on a TFT substrate. Auxiliary lines and connection lines are formed between the terminal portions and the scanning lines in order from the terminal portions. A line width of the auxiliary line is set to 20 ?m or more and the auxiliary lines extend to a region where the TFT substrate is covered with the color filter substrate. Although the connection lines connect the auxiliary lines and the scanning lines, for making the resistances from the terminal portions uniform, a line width of the connection line at a center portion of a flexible printed circuit board is set to a small value and a line width of the connection line at a peripheral portion of the flexible printed circuit board is set to a large value.

Abstract: The present invention enhances accuracy in feedbacking a common potential applied to common electricity supply lines. On a substrate of a display device, a plurality of scanning signal lines, a plurality of video signal lines which stereoscopically intersects the plurality of scanning signal lines by way of an insulation layer, common electricity supply lines arranged in a matrix array which intersect the plurality of scanning signal lines and the plurality of video signal lines by way of the insulation layer, and a common bus line which is arranged around an approximately quadrangular display region to surround the display region annularly and is electrically connected with the common electricity supply lines are formed.

Abstract: The present invention suppresses the spreading by wetting of an orientation film of a liquid crystal display panel outside a display region and, at the same time, maintains the uniformity of film thickness of the orientation film within a display region.

Abstract: A metal heat diffusion member is formed below a transparent electrode by way of an insulation film such that the metal heat diffusion member is superposed on the transparent electrode. The heat diffusion member includes a projecting portion at a portion thereof remoter than a distance between the heat diffusion member and a thin film transistor, and the heat diffusion member is superposed on the transparent electrode at the projecting portion.

Abstract: The present invention enhances a manufacturing yield rate relating to through holes. In a display device which includes a first conductive layer formed on a substrate and a second conductive layer which is formed on the first conductive layer by way of insulation films of two or more layers and connects the first conductive layer and the second conductive layer via a through hole, in the through hole portion, a side surface of an opening formed in the insulation film arranged on the first conductive layer side out of the insulation films of two or more layers includes a portion thereof which is covered with the insulation film arranged on the second conductive layer side out of the insulation films of two or more layers and an exposed portion.

Abstract: For preventing light from leaking into pixels located at a periphery of a display region of a liquid crystal display device which has a first conductive layer being extended outside a liquid crystal sealing region formed at an at least one of first and second substrates thereof, an insulating layer covering the first conductive layer, and a terminal contacting the first conductive layer and being extended on the insulating layer at an outside of the display region thereof, a second conductive layer is provided having a different electrical potential from that of the first conductive layer and being formed between the display region and the terminal on the insulating layer.

Abstract: A metal heat diffusion member is formed below a transparent electrode by way of an insulation film such that the metal heat diffusion member is superposed on the transparent electrode. The heat diffusion member includes a projecting portion at a portion thereof remoter than a distance between the heat diffusion member and a thin film transistor, and the heat diffusion member is superposed on the transparent electrode at the projecting portion.

Abstract: In a liquid crystal display device having a thin film transistor in a pixel region thereof, the present invention arranges a semiconductor layer being located under a source electrode in the thin film transistor within a contour of a gate line (or a gate electrode of the thin film transistor) so as to suppress a photo conductive current in the semiconductor layer, or to prevent the source electrode from being broken at a position where the source electrode gets over the semiconductor layer.

Abstract: A liquid crystal display device includes a pair of opposing substrates, a liquid crystal layer sandwiched between the substrates, plural pixels each having a switching element and disposed in an area surrounded by first and second gate signal lines and drain signal lines. Each video information supplied for each pixel from a corresponding one of the drain signal lines is written thereinto via the switching element driven by a first scanning signal from the first gate signal line. A second scanning signal from the second gate signal line rises approximately simultaneously with fall of the first scanning signal such that disturbances introduced into one of the pixels by the first scanning signal and the second scanning signal cancel each other.

Abstract: In a liquid crystal display unit in IPS or FFS mode having a wide viewing angle, when a current is supplied to the unit so as to make display continuously, black spot-like unevenness (small dark or white spots) is produced. Since liquid crystal with low resistivity is used in IPS or FFS mode, impurities in the liquid crystal flow during display to form indeterminate black unevenness, or stay in an end portion of a display pattern producing an after image. To prevent this in a liquid crystal display unit, new electrodes or wires connected to at least one group of the scanning or video signal lines through-holes for restraining small dark or white spots are formed on the protective film, and electrodes connected to at least one group of the pixel electrodes, the opposed electrodes and opposed voltage signal lines are formed on opposite sides of the new electrodes or wires for restraining small dark or white spots.

Abstract: In a liquid crystal display device having a thin film transistor in a pixel region thereof, the present invention arranges a semiconductor layer being located under a source electrode in the thin film transistor within a contour of a gate line (or a gate electrode of the thin film transistor) so as to suppress a photo conductive current in the semiconductor layer, or to prevent the source electrode from being broken at a position where the source electrode gets over the semiconductor layer.

Abstract: A liquid crystal display device includes a pair of opposing substrates, a liquid crystal layer sandwiched between the substrates, plural pixels each having a switching element and disposed in an area surrounded by first and second gate signal lines and drain signal lines. Each video information supplied for each pixel from a corresponding one of the drain signal lines is written thereinto via the switching element driven by a first scanning signal from the first gate signal line. A second scanning signal from the second gate signal line rises approximately simultaneously with fall of the first scanning signal such that disturbances introduced into one of the pixels by the first scanning signal and the second scanning signal cancel each other.