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: The present invention prevents, when a COF which is connected with an external circuit is bent in a flat display device, the disconnection of lines on the COF. At a position where a line of the COF is connected to terminal portions of a TFT, and the line having a large width is branched into lines having a small width T1 to T3 or T4 to T6. By displacing line branching positions from each other as indicated by an arrow A and an arrow B, when the COF is bent or deformed, stress applied to the line branching positions can be dispersed thus preventing the disconnection of lines.

Abstract: A display device having a display element is configured such that the extending directions of electrodes are made different from each other among upper, lower, left and right pixels.

Abstract: A display device having a display element is configured such that the extending directions of electrodes are made different from each other among upper, lower, left and right pixels.

Abstract: A display device having a display element is configured such that the extending directions of electrodes are made different from each other among upper, lower, left and right pixels.

Abstract: A display device includes a substrate, a display region having pixels on the substrate, a drive circuit element mounted on a peripheral portion of the substrate, a plurality of terminal portions formed on the peripheral portion and arranged on a mounting portion of the drive circuit element, and a plurality of wiring lines prolonged from the terminal portions to the outside of the mounting portion of the substrate. The terminal parts are arranged to two lines of the plurality of wiring lines along one end of the mounting portion, a plurality of bumps connected to each of the terminal portions by an anisotropic conductive film are formed on the plane facing the terminal portion of the drive circuit element, a part of the plurality bumps include a first bump and a second bump which is adjoined close to the first bump.

Abstract: To prevent the peeling-off of a drive circuit chip from an insulation substrate of a display device attributed to a residual stress between terminals formed on the insulation substrate and bumps formed on a mounting surface of a drive circuit chip, as well as to stabilize the connection resistance therebetween, the present invention provides an auxiliary bump for one of the bumps on the mounting surface of the drive circuit chip at an end edge side thereof with respect to the one of the bumps and arranges the auxiliary bump electrically in contact with one of the terminals formed on the insulation substrate of the display device with which the one of the bumps also is in electrical contact.

Abstract: The present invention can easily inspect the connection between a flexible printed circuit board and terminals. In a display device which includes a display panel which forms a plurality of lines as first lines on a terminal portion thereof, and a film-like substrate which forms a plurality of lines as second lines thereon, the display panel has a determination terminal which is arranged close to the terminal portion, has a width larger than a width of the terminal, and has a portion thereof removed, the film-like substrate forms third lines and fourth lines arranged close to the second lines thereon, the third lines face the determination terminal, and the fourth lines face the removed portion of the determination terminal from which the portion is removed.

Abstract: In a display device including a display panel and a multi-layered printed circuit board which is arranged along one side of the display panel and is electrically connected to a plurality of leads of the display panel through a plurality of tape carrier packages, according to the present invention, a plurality of slits or notches are formed in a sheet fiber member which is impregnated with resin and constitutes a base sheet of the multi-layered printed circuit board along one side of the display panel. The discontinuity of the sheet fiber member formed by the slits or the notches absorbs the difference in thermal expansion of the multi-layered printed circuit board and the display panel due to the change of an ambient temperature of the display device and hence, it is possible to prevent peeling of the tape carrier package from the display panel or breaking of the tape carrier package per se.

Abstract: A display device includes a substrate having plural signal lines extending in one direction and arranged in parallel in a direction intersecting the one direction, terminals connected to respective ones of the signal lines, and a semiconductor chip mounted on the substrate. The semiconductor chip has plural bumps connected to corresponding terminals through an anisotropic conductive layer. The terminals include a first group of terminals arranged at an image display region side and a second group of terminals arranged at a side remote from the image display region. An area of a respective terminal of the second group is larger than an area of a respective terminal of first group.

Abstract: A display device includes a substrate having plural signal lines connected to switching elements which are formed in an image display region, and plural terminals connected to respective ones of the signal lines. The terminals include a first group arranged at an image display region side and a second group arranged remote from the image display region side, the terminals being connected to output terminals of a driving circuit. The output terminals include a first group arranged at the image display region side and a second group arranged remote from the image display region side. The first group of terminals connect the first group of output terminals, and the second group of terminals connect the second group of output terminals. An area of a respective output terminal of the second group is larger than an area of a respective output terminal of the first group.

Abstract: A display device having a display element is configured such that the extending directions of electrodes are made different from each other among upper, lower, left and right pixels.

Abstract: To prevent the peeling-off of a drive circuit chip from an insulation substrate of a display device attributed to a residual stress between terminals formed on the insulation substrate and bumps formed on a mounting surface of a drive circuit chip, as well as to stabilize the connection resistance therebetween, the present invention provides an auxiliary bump for one of the bumps on the mounting surface of the drive circuit chip at an end edge side thereof with respect to the one of the bumps and arranges the auxiliary bump electrically in contact with one of the terminals formed on the insulation substrate of the display device with which the one of the bumps also is in electrical contact.

Abstract: A display device includes a substrate having plural signal lines extending in one direction and arranged in parallel in a direction intersecting the one direction, terminals connected to respective ones of the signal lines, and a semiconductor chip mounted on the substrate. The semiconductor chip has plural bumps connected to corresponding terminals through an anisotropic conductive layer. The terminals include a first group of terminals arranged at an image display region side and a second group of terminals arranged at a side remote from the image display region. An area of a respective terminal of the second group is larger than an area of a respective terminal of first group.

Abstract: In a display device including a display panel and a multi-layered printed circuit board which is arranged along one side of the display panel and is electrically connected to a plurality of leads of the display panel through a plurality of tape carrier packages, according to the present invention, a plurality of slits or notches are formed in a sheet fiber member which is impregnated with resin and constitutes a base sheet of the multi-layered printed circuit board along one side of the display panel. The discontinuity of the sheet fiber member formed by the slits or the notches absorbs the difference in thermal expansion of the multi-layered printed circuit board and the display panel due to the change of an ambient temperature of the display device and hence, it is possible to prevent peeling of the tape carrier package from the display panel or breaking of the tape carrier package per se.

Abstract: A liquid crystal display is provided with respective signal lines and a semiconductor chip. Respective output bumps of the semiconductor chip are connected to corresponding respective signal lines through ax anisotropic conductive layer. The respective output bumps include a first group of output bumps which are arranged at a side close to the signal lines and a second group of output bumps which are arranged at a side remote from the signal lines. The area of respective bumps of the second group of output bumps which face the signal lines in an opposed manner is set larger than the area of respective bumps of the first group of output bumps which face the signal lines in an opposed manner. Due to such a constitution, a reliable connection between the mounted semiconductor integrated circuit and the signal lines is ensured.

Abstract: A liquid crystal display is provided with respective signal lines and a semiconductor chip. Respective output bumps of the semiconductor chip are connected to the corresponding respective signal lines through an anisotropic conductive layer. The respective output bumps include a first group of output bumps which are arranged at a side close to the signal lines and a second group of output bumps which are arranged at a side remote from the signal lines. Area of respective bumps of the second group of output bumps which face the signal lines in an opposed manner is set larger than area of respective bumps of the first group of output bumps which face the signal lines in an opposed manner. Due to such a constitution, the reliable connection between the mounted semiconductor integrated circuit and the signal lines is ensured.

Abstract: A liquid crystal display device is constructed so as to be capable of avoiding the occurrence of an electrical short circuit between adjacent bumps of a driver IC. In the liquid crystal display device on which a driver IC is mounted with an anisotropic conductive film interposed therebetween, the width of a space between one of the bumps of the driver IC and another bump to which the one of the bumps is adjacent becomes larger toward the central side of the driver IC.

Abstract: A paper feeding apparatus for a printer, comprising feed rollers to feed sheets of paper in a direction across a line of printing, a paper stacker holding the sheets in a stack and movable between an advanced and a retracted position, a biasing device for biasing the paper stacker toward its advanced position to urge a top sheet of the paper stack into contact with the feed rollers, a manually operated member movable between a first and a second position, a retract-and-latch device for moving the paper stacker to the retracted position against a biasing force of the biasing device and locking the paper stacker at the retracted position when the manually operated member is moved from the first to the second position, and an unlatch device for releasing the retract-and-latch device to allow the paper stacker to return to the advanced position when the manually operated member is moved toward its first position.

Abstract: A paper feeding device for a printer having a first paper handling assembly including rollers for feeding sheets of paper of one kind from a first paper stacker along a first inlet path to a printing assembly of the printer, and a second paper handling assembly including a second stacker for receiving the printed sheets from the first stacker, and supported by a support member pivotally between first and second positions. The support member carries at least one paper guide which is pivotable between its first and second positions according to pivotal movements of the support member. In the first position, the paper guide defines a paper exit path opening through which the printed sheets are guided into the second stacker. When the paper guide is pivoted to its second position, it closes the paper exit path opening. The feeding device further comprises a member or members defining a second inlet path adjacent the second paper handling assembly when the support member is in the second position.