JP2012242778A - Driving device, display device, driving device complex and integrated circuit device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized driving device with a simple configuration, a display device including the driving device, a driving device complex constituted of a plurality of the driving devices, and an integrated circuit device provided in the driving device.SOLUTION: A driving device 1 comprises: an integrated circuit section 10 for generating an output signal to be outputted to a display; and a wiring section 20 electrically connected to the integrated circuit section 10. The integrated circuit section 10 includes a plurality of output circuits for generating output signals. The wiring section 20 includes a plurality output wires 24-1 to 24-3 having each one end electrically connected to the output circuits and a plurality of output sections 23-1 to 23-3 electrically connected to the other end of each of the output wires 24-1 to 24-3 and outputting output signals to the outside of the driving device 1. The output sections 23-1 to 23-3 are arranged along a prescribed direction (X direction) to constitute output section groups G1 to G3.

Description

  The present invention relates to a drive device that outputs an output signal to a display unit and a display device including the drive device. The present invention also relates to a drive device composite in which a plurality of the drive devices are integrated, and an integrated circuit device provided in the drive device.

  In a display device typified by a liquid crystal display device or the like, simplification of the manufacturing method and narrowing of the frame are required. Specifically, for example, in Patent Document 1, the integrated circuit portion provided in the source driver is formed into an elongated shape extending along the edge of the display panel, thereby narrowing the frame and without bending the source driver. It has been proposed to mount the display device simply.

  A configuration example of a source driver including the above-described elongated integrated circuit portion will be described with reference to FIGS. FIG. 9 is a block diagram showing an example of the configuration of a conventional source driver. FIG. 10 is a block diagram showing another example of the configuration of a conventional source driver. FIG. 11 is a schematic diagram showing a configuration of a conventional source driver at the time of shipment.

  As illustrated in FIG. 9, the source driver 100 includes an integrated circuit unit 110, a wiring unit 120, and a tape base material 130 on which the integrated circuit unit 110 and the wiring unit 120 are provided. The integrated circuit unit 110 includes an input circuit 111 that processes an input signal, an output circuit 112 that generates an output signal according to a signal input from the input circuit 111, and a control circuit 113 that controls the operation of the integrated circuit unit 110. An input terminal 114 that is electrically connected to the input circuit 111 and receives an input signal from the outside of the integrated circuit portion 110; and an output signal that is electrically connected to the output circuit 112 and outputs the output signal to the outside of the integrated circuit portion 110. And an output terminal 115. In addition, the wiring unit 120 includes an input unit 121 to which an input signal is input from the outside of the source driver 100, an input wiring 122 that electrically connects the input unit 121 and the input terminal 114, and an output to the outside of the source driver 100. An output unit 123 that outputs a signal, and an output wiring 124 that electrically connects the output unit 123 and the output terminal 115 are provided.

  The same applies to the source driver 200 shown in FIG. The source driver 200 includes an integrated circuit unit 210, a wiring unit 220, and a tape base material 230 on which the integrated circuit unit 210 and the wiring unit 220 are provided. The integrated circuit unit 210 includes an input circuit 211 that processes an input signal, an output circuit 212 that generates an output signal according to a signal input from the input circuit 211, and a control circuit 213 that controls the operation of the integrated circuit unit 210. An input terminal 214 that is electrically connected to the input circuit 211 and receives an input signal from the outside of the integrated circuit portion 210; and an output signal that is electrically connected to the output circuit 212 and outputs the output signal to the outside of the integrated circuit portion 210. And an output terminal 215 for performing. In addition, the wiring unit 220 outputs the input unit 221 to which an input signal is input from the outside of the source driver 200, the input wiring 222 that electrically connects the input unit 221 and the input terminal 214, and the outside of the source driver 200. An output unit 223 that outputs a signal and an output wiring 224 that electrically connects the output unit 223 and the output terminal 215 are provided.

  However, the source driver 100 shown in FIG. 9 has a configuration in which the output circuits 112 in the integrated circuit unit 110 are arranged in a line along the longitudinal direction of the integrated circuit unit 110 (vertical direction in the drawing). On the other hand, the source driver 200 shown in FIG. 10 has a configuration in which the output circuits 212 in the integrated circuit unit 220 are arranged in two rows along the longitudinal direction (vertical direction in the drawing) of the integrated circuit unit 210.

  Further, as shown in FIG. 11, the source driver 300 is shipped in a state where a source driver composite 340 having a plurality of source drivers 300 is wound around a reel 350. The source driver composite 340 is obtained by providing the tape base material 330 common to the plurality of source drivers 300 with the integrated circuit portion 310 and the wiring portion 320 of each source driver 300. Further, in the entire source driver composite 340, a plurality of source drivers 300 are provided in a line along the longitudinal direction of the tape base material 330.

  The source driver composite 340 is wound around the reel 350 with the longitudinal direction of the tape base material 330 as the winding direction. At this time, the integrated circuit portion 310 of each source driver 300 is provided on the tape base material 330 so that the longitudinal direction thereof is perpendicular to the longitudinal direction of the tape base material 330. Therefore, even if the source driver composite 340 is wound around the reel 350, the stress that the integrated circuit unit 310 receives is reduced.

  In addition, a row of a plurality of holes 341 along the longitudinal direction of the tape substrate 330 so as to sandwich a plurality of source drivers 300 arranged in a row at both ends in a direction perpendicular to the longitudinal direction of the tape substrate 330. Are provided one by one. The source driver composite 340 is sent out by fitting a tooth such as a sprocket into the hole 341 and rotating it. For example, the transmission is performed when the source driver 300 is cut out from the source driver composite 340 or when the operation of the source driver 300 is tested.

JP-A-4-242945

  By the way, in recent display devices, the number of pixels of the display panel is increasing, but in order to suppress an increase in circuit scale and cost, the number of source drivers provided in one display device is reduced (in particular, It is necessary to have one integrated circuit portion). In other words, the output drivers 123 and 223, the output wirings 124 and 224, and the output terminals 115 and 215 shown in FIG. 9 and FIG. Specifically, for example, the number of pixels of the display panel is 768 × 1368 (the number of pixels in the row direction × the number of pixels in the column direction), and one pixel is formed by three (R, G, B) display elements arranged in the row direction. , The source drivers 100 and 200 and the integrated circuit units 110 and 210 need to include 1368 × 3 = 4104 output units 123 and 223, output wirings 124 and 224, and output terminals 115 and 215.

  Here, assuming that the pitch between the output terminals 115 and 215 is 25 μm, the length in the longitudinal direction of the integrated circuit portion 110 in the source driver 100 shown in FIG. 9 is 102.6 mm. On the other hand, the length in the longitudinal direction of the integrated circuit portion 210 in the source driver 200 shown in FIG. 10 is 51 even if the output terminals 215 can be arranged in half on two opposite sides of the integrated circuit portion 210. 3 mm.

  Such large-sized integrated circuit portions 110 and 210 greatly exceed the size (about 20 mm) of an integrated circuit portion that can be manufactured by a normal manufacturing apparatus, and a special device is required for manufacturing. Therefore, the manufacturing of the integrated circuit units 110 and 210 is complicated, and the cost of the integrated circuit units 110 and 210 is increased. Further, when the length of the integrated circuit portions 110 and 210 in the longitudinal direction is increased (the aspect ratio is increased), the strength of the integrated circuit portions 110 and 210 is reduced, which is a problem.

  Furthermore, as shown in FIG. 10, when the output terminals 215 are arranged on two opposite sides of the integrated circuit unit 210, the length in the longitudinal direction of the integrated circuit unit 210 can be shortened, but the output wiring 224 ( In particular, since the routing of the output wiring 224 connected to the output terminal 215 disposed on the edge far from the output unit 223 of the integrated circuit unit 210 is increased, the areas of the wiring unit 220 and the tape base unit 230 are reduced. growing. Therefore, the size of the source driver 200, the size of the display device (particularly, the frame area) including the source driver 200, the cost of the source driver 200, and the like are incurred.

  In view of the above problems, the present invention provides a drive device having a small and simple configuration, a display device provided with the drive device, a drive device composite comprising a plurality of drive devices, and an integrated circuit device provided in the drive device. The purpose is to provide.

In order to achieve the above object, the present invention is a drive device including an integrated circuit unit that generates an output signal to be output to a display unit, and a wiring unit that is electrically connected to the integrated circuit unit,
The integrated circuit unit includes a plurality of output circuits for generating the output signal,
The wiring section includes a plurality of output wirings having one end portion electrically connected to the output circuit, and a plurality of output wirings electrically connected to the other end portion of the output wiring and outputting the output signal to the outside of the driving device. And an output section of
The output unit is arranged along a predetermined direction, and a plurality of output unit groups including a plurality of the output units are provided,
There is provided a driving device characterized in that a separation distance in the predetermined direction between adjacent output section groups is larger than a separation distance in the predetermined direction between adjacent output sections in the output section group.

Furthermore, when the drive device having the above characteristics is arranged between at least one output unit group included in one of the drive devices between the output unit groups included in the other drive device, for the two drive devices, The at least one output unit group included in the other driving device is disposed between the output unit groups included in one of the driving devices.
It is preferable that the wiring portion is formed.

  Furthermore, in the driving device having the above characteristics, it is preferable that the distance between the adjacent output unit groups in the predetermined direction is equal to or longer than the length of the output unit group in the predetermined direction.

Furthermore, in the drive device having the above characteristics, the two output devices are alternately arranged in the output unit groups provided in one of the drive devices and the output unit groups provided in the other drive device. To be,
It is preferable that the wiring portion is formed.

Furthermore, in the driving device having the above characteristics, the integrated circuit portion has a rectangular shape in plan view.
The output units constituting each of the three output unit groups of the first output unit group, the second output unit group, and the third output unit group are in a direction parallel to the first edge of the integrated circuit unit. Arranged along the
The output circuit arranged along the first end side of the integrated circuit unit and the output unit constituting the first output unit group extend in a direction perpendicular to the first end side. The output wiring is electrically connected;
The output circuit disposed along a second end side adjacent to the first end side of the integrated circuit unit, and the output unit constituting the second output unit group, with respect to the second end side The output wiring that extends and bends in the vertical direction is electrically connected,
The output circuit disposed along a third end side adjacent to the first end side of the integrated circuit unit and facing the second end side; and the output unit constituting the third output unit group; It is preferable that the output wiring that extends and bends in a direction perpendicular to the third end side is electrically connected.

Furthermore, in the driving device having the above characteristics, the integrated circuit unit further includes a plurality of input circuits that process an input signal and output the input signal to the output circuit.
The wiring unit is electrically connected to a plurality of input wirings, one end of which is electrically connected to the input circuit, and the other end of the input wiring, and the input signal is input from the outside of the driving device. A plurality of input units;
The input unit is disposed along a direction parallel to the first edge of the integrated circuit unit;
The input that extends in a direction perpendicular to the fourth end side, the input circuit disposed along a fourth end side facing the first end side of the integrated circuit unit, and the input unit. It is preferable that the wiring is electrically connected.

  Furthermore, it is preferable that the drive device having the above-described features includes a stress relaxation structure in at least one of the bent portions of the output wiring.

  Furthermore, it is preferable that the stress relaxation structure of the drive device having the above characteristics is a structure in which the output wiring is bent so as to locally protrude in a direction perpendicular to the extending direction.

The present invention also provides a drive device having the above characteristics,
The display unit in which display elements are arranged in a matrix and a predetermined number of the display elements arranged in a column direction form one pixel;
With
One of the output circuits included in the driving device outputs the output signal to the display elements arranged in at least one column of the display unit,
When the display unit displays the pixels for one row, the driving device sequentially outputs the output signals corresponding to a predetermined number of the display elements constituting the pixels. I will provide a.

  Furthermore, the display device having the above characteristics includes, for at least one output unit group, an output buffer having a driving capability corresponding to the length of the wiring on the display unit connected to the output unit group. preferable.

Further, the present invention provides at least two drive devices having the above characteristics,
At least the output wiring and the output portion of each of the driving devices are formed on the same surface, and a long base portion whose longitudinal direction is parallel to the predetermined direction;
With
Provided is a drive device composite in which at least one output unit group included in one of the drive devices is disposed between two adjacent output unit groups included in the other drive device.

Further, the present invention is an integrated circuit device having a rectangular shape in plan view provided with a plurality of output circuits for generating output signals to be output to the display unit,
Each of the output circuits is arranged along the three edges of the integrated circuit device such that the respective longitudinal directions are perpendicular to the corresponding edges.
Provided is an integrated circuit device, characterized in that at least the three edges are provided with output terminals that are electrically connected to the output circuit and output the output signal to the outside of the integrated circuit device.

Furthermore, the integrated circuit device having the above characteristics further includes an input circuit that processes an input signal and outputs the processed signal to the output circuit,
The input circuit is disposed along one edge other than the three edges,
It is preferable that an input terminal that is electrically connected to the input circuit and receives the input signal from the outside of the integrated circuit device is disposed at least on the one end side.

  In the drive device having the above characteristics, the output unit groups are spaced apart. Therefore, it is possible to electrically connect the output unit constituting the output unit group and the output circuit of the integrated circuit unit without forcibly routing the output wiring. Therefore, the drive device can be reduced in size and simplified.

1 is a block diagram showing an example of an integrated circuit device according to an embodiment of the present invention. Schematic top view which shows an example of the drive device which concerns on embodiment of this invention. The schematic diagram which shows an example of the drive device composite which concerns on embodiment of this invention Schematic plan view showing an example of a display device according to an embodiment of the present invention 4 is a circuit diagram showing an example of the configuration of the display unit shown in FIG. The block diagram which shows the modification of the integrated circuit device which concerns on embodiment of this invention Schematic top view which shows the principal part of the modification of the drive device which concerns on embodiment of this invention. Schematic top view which shows the modification of the display apparatus which concerns on embodiment of this invention. It is a block diagram shown about an example of a structure of the conventional source driver. It is a block diagram shown about another example of a structure of the conventional source driver. It is a schematic diagram which shows the form at the time of shipment of the conventional source driver.

  Each of the integrated circuit device, the driving device, the driving device composite, and the display device according to the embodiment of the present invention will be described below with reference to the drawings. In the following, for the sake of concrete description, the case where the drive device according to the present embodiment is applied to a source driver of a liquid crystal display device will be exemplified, but the drive device of the present invention is other than the source driver of a liquid crystal display device. It is also applicable to.

<Integrated circuit device>
First, an example of an integrated circuit device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of an integrated circuit device according to an embodiment of the present invention.

  As shown in FIG. 1, the integrated circuit device 10 includes an input circuit 11 that processes an input signal, output circuits 12-1 to 12-3 that generate an output signal according to a signal input from the input circuit 11, A control circuit 13 that controls the operation of the integrated circuit device 10, an input terminal 14 that is electrically connected to the input circuit 11 and receives an input signal from the outside of the integrated circuit device 10, and an output circuit 12. The output terminals 15-1 to 15-3 that output an output signal to the outside of the integrated circuit device 10, and the timing controller 16 that generates a synchronization signal according to the signal input from the input circuit 11.

  The input circuit 11 processes an input signal (for example, a video signal) input via the input terminal 14 and inputs a predetermined signal to the output circuits 12-1 to 12-3 and the timing controller 16. For example, the input circuit 11 distributes and outputs a signal indicating an image to be displayed on the display device to each of the output circuits 12-1 to 12-3. For example, the input circuit 11 outputs a signal indicating the operation timing of the display device to the timing controller 16.

  The output circuits 12-1 to 12-3 generate output signals to be given to the respective pixels of the display unit according to the above signals input from the input circuit 11. The output signals generated by the output circuits 12-1 to 12-3 are output to the outside of the integrated circuit device 10 through the output terminals 15-1 to 15-3.

  The control circuit 13 refers to the synchronization signal generated by the timing controller 16 and controls the operation of the integrated circuit device 10. For example, the timing at which an output signal is output from the output terminals 15-1 to 15-3 is controlled.

  Further, the integrated circuit device 10 illustrated in FIG. 1 has a rectangular shape in plan view. The output circuits 12-1 to 12-3 are arranged along the three end sides of the integrated circuit device 10. The longitudinal directions of the output circuits 12-1 to 12-3 are perpendicular to the end sides of the corresponding integrated circuit device 10. Further, at least the three edges are an output terminal 15-1 electrically connected to the output circuit 12-1, an output terminal 15-2 electrically connected to the output circuit 12-2, and an output. An output terminal 15-3 that is electrically connected to the circuit 12-3 is disposed.

  The input circuit 11 is disposed along one end side other than the above three end sides of the integrated circuit device 10. An input terminal 14 that is electrically connected to the input circuit 11 is disposed at least on the one end side.

  Specifically, in the example shown in FIG. 1, the end (upper end in the figure) of the integrated circuit device 10 that faces the end (lower end in the figure) where the input circuit 11 and the input terminal 14 are arranged. ) Is provided with an output circuit 12-1 and an output terminal 15-1. In addition, one end side (the left side edge in the figure) adjacent to the edge (the upper edge in the figure) where the output circuit 12-1 and the output terminal 15-1 are arranged in the integrated circuit device 10 is An output circuit 12-2 and an output terminal 15-2 are arranged. In addition, the integrated circuit device 10 is adjacent to an edge (an upper edge in the drawing) on which the output circuit 12-1 and the output terminal 15-1 are arranged, and the output circuit 12-2 and the output terminal 15-2. The output circuit 12-3 and the output terminal 15-3 are arranged on the end side (the end side on the right side in the figure) opposite to the arranged end side (the left side edge in the figure).

  The control circuit 13 and the timing controller 16 are arranged in a vacant area in the integrated circuit device 10. In the example illustrated in FIG. 1, the timing controller 16 is disposed in a region sandwiched between the output circuit 12-2 and the output circuit 12-3. Further, the control circuit 13 is disposed in a region where the output circuits 12-1 to 12-3 and the timing controller 16 are not disposed.

  According to the integrated circuit device 10 of the present embodiment, the output circuits 12-1 to 12-3 and the output terminals 15-1 to 15-3 are arranged along the three end sides. Therefore, when the number of output circuits 12-1 to 12-3 included in the integrated circuit device 10 is large, the shape of the integrated circuit device 10 is changed from the conventional elongated shape (see FIGS. 9 and 10). It becomes possible to make it close to a square (reduce the aspect ratio). Therefore, the integrated circuit device 10 can be shaped to resist stress.

  Further, according to the integrated circuit device 10 of the present embodiment, the timing controller 16 can be disposed in the integrated circuit device 10. Therefore, a configuration for transmitting a signal from the timing controller 16 to the integrated circuit device 10 can be eliminated. Therefore, the drive device can be reduced in size and simplified.

<Drive device>
Next, an example of a drive device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a schematic plan view showing an example of the drive device according to the embodiment of the present invention.

  As shown in FIG. 2, the driving device 1 includes an integrated circuit unit 10 that is the above-described integrated circuit device, a wiring unit 20, and a base material unit 30 on which the integrated circuit unit 10 and the wiring unit 20 are provided. The wiring unit 20 includes an input unit 21 that receives an input signal from the outside of the driving device 1, an input wiring 22 that electrically connects the input unit 21 and the input terminal 14 of the integrated circuit unit 10, and the driving unit 1. Output units 23-1 to 23-3 for outputting output signals to the outside, and outputs for electrically connecting the output units 23-1 to 23-3 and the output terminals 15-1 to 15-3 of the integrated circuit unit 10 Wirings 24-1 to 24-3.

  The output units 23-1 to 23-3 are aligned along the same direction (hereinafter referred to as the X direction), and the plurality of output units 23-1 to 23-3 constitute output unit groups G1 to G3. . For example, in the driving apparatus 1 shown in FIG. 2, the output unit 23-1 configures the output unit group G 1, the output unit 23-2 configures the output unit group G 2, and the output unit 23-3 configures the output unit group G 3. It is composed. Further, the separation distance in the X direction between the adjacent output unit groups G1 to G3 is larger than the separation distance in the X direction between the adjacent output units 23-1 to 23-3 in the output unit group G1 to G3. That is, the output unit groups G1 to G3 are spaced apart.

  Specifically, in the example illustrated in FIG. 2, the output units 23-1 to 23-3 constituting each of the output unit groups G <b> 1 to G <b> 3 are connected to the edges (where the output terminal 15-1 of the integrated circuit unit 10 is disposed ( Alignment is arranged along a direction (X direction) parallel to the upper edge in the drawing. Further, the output wiring 24-1 extending in the direction perpendicular to the end side (Y direction) connects the output unit 23-1 and the output terminal 15-1 of the integrated circuit unit 10 that constitute the output unit group G1. Connect electrically.

  In addition, after extending in the direction (X direction) perpendicular to the end side (left side end in the figure) where the output terminal 15-2 of the integrated circuit unit 10 is arranged, it is bent and finally in this direction. The output wiring 24-2 extending in the direction perpendicular to the Y direction electrically connects the output unit 23-2 constituting the output unit group G2 and the output terminal 15-2 of the integrated circuit unit 10. In addition, after extending in the direction (X direction) perpendicular to the edge (the edge on the right side in the figure) where the output terminal 15-3 of the integrated circuit unit 10 is arranged, it is bent and finally in this direction The output wiring 24-3 extending in the direction perpendicular to the Y direction electrically connects the output unit 23-3 constituting the output unit group G3 and the output terminal 15-3 of the integrated circuit unit 10.

  Further, an input wiring 22 extending in a direction (Y direction) perpendicular to an end side (lower side end in the figure) where the input terminal 14 of the integrated circuit unit 10 is disposed is connected to the input unit 21 and the integrated circuit unit. 10 input terminals 14 are electrically connected.

  In the drive device 1 shown in FIG. 2, the interval between the output wirings 24-1 to 24-3 is narrow on the integrated circuit unit 10 side and wide on the output units 23-1 to 23-3 side. Similarly, the interval between the input wirings 222 is narrow on the integrated circuit unit 10 side and wide on the input unit 21 side.

  According to the drive device 1 of the present embodiment, the output unit groups G1 to G3 are arranged apart from each other. Therefore, the output units 24-1 to 23-3 and the output terminals 15-1 to 15-15 of the integrated circuit unit 10 constituting the output unit group G1 to G3 without forcibly routing the output wirings 24-1 to 24-3. 3 (output circuits 12-1 to 12-3) can be electrically connected. Therefore, the drive device 1 can be reduced in size and simplified.

<Drive device composite>
Next, an example of the drive device composite according to the embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a schematic diagram illustrating an example of a drive device composite according to an embodiment of the present invention. In addition, the drive device composite 40 shown in FIG. 3 is, for example, a form at the time of shipment of the drive device 1 described above.

  As shown in FIG. 3, the drive device composite 40 includes at least two drive devices 1 described above. The drive device composite 40 is the same as the long base portion 30 whose longitudinal direction is parallel to the direction in which the output units 23-1 to 23-3 of the drive device 1 are aligned (the X direction in FIG. 2). On the surface, at least the integrated circuit portion 10 and the wiring portion 20 of the driving device 1 are provided. Further, the drive device composite 40 is wound around the reel 50 with the longitudinal direction of the base member 30 (the X direction in FIG. 2) as the winding direction.

  In addition, along the longitudinal direction of the base material portion 30 so as to sandwich the plurality of driving devices 1 at both ends in the width direction (corresponding to the Y direction in FIG. 2) perpendicular to the longitudinal direction of the base material portion 30. A plurality of rows of holes 41 are provided one by one. The drive device composite 40 is sent out by fitting a tooth such as a sprocket into the hole 41 and rotating it. For example, when the drive device 1 is cut out from the drive device composite 40 or when the operation of the drive device 1 is tested, the delivery is performed.

  In the drive device composite 40, at least one output unit group G1 to G3 included in one drive device 1 is disposed between adjacent output unit groups G1 to G3 included in the other drive device 1.

  Specifically, in the example illustrated in FIG. 3, the output unit group G <b> 1 included in one drive device 1 is disposed between adjacent output unit groups G <b> 1 and G <b> 3 included in the other drive device 1. Furthermore, the output unit group G3 provided in one drive device 1 is disposed between adjacent output unit groups G1 and G2 provided in the other drive device 1. That is, the output unit groups G1 to G3 included in one drive device 1 and the output unit groups G1 to G3 included in the other drive device 1 are alternately arranged. For example, in such an arrangement, in the driving device 1 shown in FIG. 2, the distance between the adjacent output unit groups G1 to G3 in the X direction is greater than or equal to the length of each output unit group G1 to G3 in the X direction. If so, it is possible.

  Further, in the drive device composite 40 shown in FIG. 3, the drive devices 1 in which the output unit groups G <b> 1 to G <b> 3 are fitted as described above are arranged in two rows along the longitudinal direction of the base material portion 30.

  According to the drive device composite 40 of the present embodiment, at least one output unit group G1 to G3 included in one drive device 1 is disposed between the output unit groups G1 to G3 included in the other drive device 1. . Therefore, these two driving devices 1 are arranged close to each other in the width direction of the base material portion 30. Therefore, it is possible to reduce the length of the base material portion 30 in the width direction.

  In FIG. 3, the drive device composite 40 has been described as being wound around the reel 50, but may be not wound around the reel 50. For example, the drive device composite 40 may have a strip shape having at least two drive devices 1 into which the output unit groups G1 to G3 are fitted.

<Display device>
Next, an example of a display device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a schematic plan view showing an example of the display device according to the embodiment of the present invention. FIG. 5 is a circuit diagram showing an example of the configuration of the display section shown in FIG.

  As shown in FIG. 4, the display device 60 displays the image by the drive device 1 described above, the signal line 70 that is electrically connected to the input terminal 14 of the drive device 1 and inputs an input signal to the drive device 1. And a gate driver 91 and 92 for applying a drive signal to the display unit 80. The gate driver 91 is electrically connected to the driving device 1 (particularly the timing controller 16) by a gate driver connection wiring 81 on the display unit 80. The gate driver 92 is electrically connected to the gate driver 91 by a gate driver connection wiring 82 on the display unit 80.

  As shown in FIG. 5, the display unit 80 includes a plurality of parallel source lines SL extending in the column direction (the vertical direction in FIGS. 4 and 5) and a direction perpendicular to the direction in which the source lines SL extend. Are connected to a plurality of parallel gate lines GLr, GLg, and GLb extending in each direction (row direction, left and right direction in FIGS. 4 and 5), one source line SL, and one gate line GLr, GLg, and GLb. And a display element E. An output signal output from the driving device 1 is applied to the source line SL. On the other hand, the drive signals output from the gate drivers 91 and 92 are applied to the gate lines GLr, GLg, and GLb.

  The display element E includes a liquid crystal element L and a transistor element (for example, TFT: Thin Film Transistor) T. The transistor element T has a control terminal connected to the gate lines GLr, GLg, and GLb, and a first terminal connected to the source line SL. The liquid crystal element L has one end connected to the second terminal of the transistor element T and the other end connected to a common electrode to which a common signal is applied. A plurality of (three in this example) display elements E connected to the same source line SL and connected to different gate lines GLr, GLg, GLb and arranged in the column direction form one pixel P.

  As described above, the output circuits 12-1 to 12-3 of the driving device 1 generate an output signal according to the input signal input via the signal line 70. Further, the timing controller 16 of the driving device 1 generates a synchronization signal according to the input signal. This synchronization signal is input to the gate drivers 91 and 92 via the gate driver connection lines 81 and 82.

  The gate drivers 91 and 92 sequentially apply drive signals to the gate lines GLr, GLg, and GLb according to the input synchronization signal. The transistor element T whose control terminal is connected to the gate lines GLr, GLg, GLb to which the drive signal is applied is turned on. Then, the output signal applied to the source line SL by the driving device 1 is input to the liquid crystal element L through the transistor element T that is turned on, and the liquid crystal element L holds the output signal. Then, the display unit 80 displays an image corresponding to the output signal held by the liquid crystal element L.

  As shown in FIG. 5, when one pixel P is configured by a predetermined number (three in this example) of display elements E arranged in the column direction, when the display unit 80 displays the pixels P for one row. The driving device 1 sequentially outputs output signals corresponding to a predetermined number (three in this example) of display elements E constituting the pixel P. Similarly, the gate drivers 91 and 92 sequentially output drive signals corresponding to a predetermined number (three in this example) of display elements E constituting the pixel P.

  According to the display device 60 of the present embodiment, a plurality of display devices E adjacent along the source line SL to which the driving device 1 applies an output signal constitutes one pixel P. Therefore, the number of output units 23-1 to 23-3, output wirings 24-1 to 24-3, and output terminals 15-1 to 15-3 included in the driving device 1 can be reduced.

  Specifically, for example, the number of pixels of the display unit 80 is 768 × 1368 (the number of pixels in the column direction × the number of pixels in the row direction), and one display element E is arranged by three (R, G, B) display elements E arranged in the column direction. When one pixel P is configured, the driving device 1 and the integrated circuit unit 10 include 1368 output units 23-1 to 23-3, output wirings 24-1 to 24-3, and output terminals 15-1 to 15-. 3 would be sufficient.

  Further, the output units 23-1 to 23-3, the output wirings 24-1 to 24-3, and the output terminals 15-1 to 15-3 are arranged in a plurality of (for example, three) locations. Therefore, the output units 23-1 to 23-3, the output wirings 24-1 to 24-3, and the output terminals 15-1 to 15-3 that are arranged at one place are further reduced (for example, per one place). 456). Therefore, the drive device 1 and the integrated circuit unit 10 can be reduced in size.

  Further, according to the display device 60 of the present embodiment, the output units 23-1 to 23-3 of the driving device 1 are arranged apart from each other. Therefore, the density of the connection wiring in the narrowing-down portion (the region on the display unit 80 where the connection wiring for connecting the output units 23-1 to 23-3 of the driving device 1 and the source line SL is provided) It becomes smaller than the case where the drive device which is not separated is applied. Therefore, the narrowing portion can be narrowed (particularly, narrower in the column direction) as the density of the connection wiring of the narrowing portion decreases.

  4 and 5 exemplify the display device 60 in which one pixel P is configured by a predetermined number (three in the above example) of display elements E adjacent in the column direction. The driving device 1 described above can also be applied to a display device in which one pixel is configured by a number of display elements. However, when the above-described driving device 1 is applied to the latter display device, the output unit, the output wiring, and the output terminal are a predetermined number of times (three times in the above example) as compared to the case of applying to the former display device. I need it. In addition, the display device is not limited to a display device in which one pixel is configured by a predetermined number of display elements adjacent in a straight line, and is adjacent in a planar form (for example, two in the row direction and two in the column direction). The above-described driving device 1 can be applied to a display device or the like in which one pixel is configured.

<Modification>
[1] The integrated circuit device 10 illustrated in FIG. 1 has a structure in which each of the output terminals 15-1 to 15-3 is disposed on a corresponding end side of the integrated circuit device 10. The structure may be arranged over the end side. A specific example will be described with reference to FIG. FIG. 6 is a block diagram showing a modification of the integrated circuit device according to the embodiment of the present invention. In the integrated circuit device 10a shown in FIG. 6, the same reference numerals are given to the same parts as those of the integrated circuit device 10 shown in FIG. In the following, the integrated circuit device 10a shown in FIG. 6 will be described focusing on the differences from the integrated circuit device 10 shown in FIG.

  In the integrated circuit device 10a shown in FIG. 6, the output terminal 15-1a has not only the edge along the output circuit 12-1 (the upper edge in the figure) but also the edge along the output circuit 12-2 (in the figure). (The left edge) and the edge along the output circuit 12-3 (the right edge in the figure). In addition, the output terminal 15-2a is arranged not only on the edge along the output circuit 12-2 (the left edge in the figure) but also on the edge along the input circuit 11 (the lower edge in the figure). The In addition, the output terminal 15-3 is arranged not only on the edge along the output circuit 12-3 (the right edge in the figure) but also on the edge along the input circuit 11 (the lower edge in the figure). The

  If comprised in this way, the freedom degree of arrangement | positioning of output terminal 15-1a-15-3a can be raised, suppressing that routing of the output wiring 24-1-24-3 with which the drive apparatus 1 is provided becomes large. . Therefore, the integrated circuit device 10a can be reduced in size and simplified. Note that it is not always necessary to arrange all the output terminals 15-1a to 15a-3a over a plurality of adjacent edges as described above. That is, at least one of the output terminals 15-1a to 15a-3a may be arranged on one end side similarly to the integrated circuit device 10 of FIG.

  [2] The drive device 1 illustrated in FIG. 2 has a structure in which each of the output wirings 24-2 and 24-3 bends vertically toward the output units 23-2 and 23-3. In addition, a structure for relaxing stress (stress relaxation structure) may be provided. A specific example will be described with reference to FIG. FIG. 7 is a schematic plan view showing a main part of a modified example of the drive device according to the embodiment of the present invention. In addition, in the drive device 1a shown in FIG. 7, the same code | symbol is attached | subjected about the part similar to the drive device 1 shown in FIG. In the following, the driving device 1a shown in FIG. 7 will be described focusing on the differences from the driving device 1 shown in FIG.

  In the driving device 1a shown in FIG. 7, the output wiring 24-2 locally protrudes in a bent portion (for example, the output portion 23-2 side) of the output wiring 24-2 with respect to a direction perpendicular to the extending direction. A protruding portion 25 that is bent so as to be formed is provided. The bent portion of the output wiring 24-2 is easily subjected to stress due to, for example, mounting of the driving device 1a on the display device or contraction of the base material portion 30 after mounting. However, the stress can be relieved by providing the protruding portion 25 at the portion. For this reason, it is possible to suppress disconnection or the like in the output wiring 24-2.

  Note that it is preferable to provide a protruding portion similar to the protruding portion 25 of FIG. 7 in the bent portion of the output wiring 24-3. Moreover, as shown in FIG. 7, at least the protruding portion 25 protruding in the direction parallel to the longitudinal direction of the base material portion 30 is connected to the output portions 23-2 and 23-3 side of the output wirings 24-2 and 24-3. Are preferably provided respectively.

  Moreover, you may employ | adopt structures other than the protrusion part 25 mentioned above as a stress relaxation structure. For example, a notch that is locally recessed in a direction perpendicular to the extending direction of the output wiring 24-2 may be adopted as the stress relaxation structure. Further, in FIG. 7, the case where one projecting portion 25 is provided for one output wiring is illustrated, but a plurality of projecting portions 25 may be provided for one output wiring. Further, in this case, a plurality of different stress relaxation structures may be provided for one output wiring.

  [3] When the driving device 1 is arranged at the center position in the row direction of the display unit 80 as in the display device 60 shown in FIG. 4, wiring on the display unit 80 connected to the output units 23-2 and 23-3. The length of the connection portion of the narrowing portion and the source line SL (hereinafter referred to as the display portion wiring) is generally longer than the length of the display portion wiring connected to the output portion 23-1. Become. As a result, the load capacity of the display unit wiring connected to the output units 23-2 and 23-3 becomes larger than the load capacity of the display unit wiring connected to the output unit 23-1, so that the output unit 23- In some cases, the application of the drive signal to the display wiring connected to 2 and 23-3 is delayed. For example, when one pixel P is configured by a predetermined number of display elements E adjacent in the column direction, or when the display device is large, there is a high possibility that this problem will occur.

  Therefore, for example, the driving capacity of the output buffer included in the output circuit 12-1 and the driving capacity of the output buffer included in the output circuits 12-2 and 12-3 are respectively in accordance with the length of the display unit wiring. (The drive capability of the latter output buffer is made larger than the drive capability of the former output buffer). Thereby, it becomes possible to eliminate the delay in applying the drive signal to the display unit wiring connected to the output units 23-2 and 23-3.

  When the output buffer driving capability is adjusted as described above, the sizes of the output circuits 12-1 to 12-3 can be relatively changed. However, since the output circuits 12-1 to 12-3 are arranged along the respective end sides of the integrated circuit unit 10, it is possible to suppress useless space in the integrated circuit unit 10.

  Another solution to this problem will be described with reference to the drawings. FIG. 8 is a schematic plan view showing a modification of the display device according to the embodiment of the present invention. In the display device 60a shown in FIG. 8, parts that are the same as those of the display device 60 shown in FIG. In the following, the display device 60a shown in FIG. 8 will be described focusing on the differences from the display device 60 shown in FIG.

  The display device 60a shown in FIG. 8 includes output buffers B1 to B3 having a driving capability corresponding to the length of the display portion wiring. The output buffer B1 is disposed between the output unit 23-1 of the driving device 1 and the display unit wiring, and the output buffer B2 is disposed between the output unit 23-2 of the driving device 1 and the display unit wiring. The output buffer B3 is disposed between the output unit 23-3 of the driving device 1 and the display unit wiring. Further, the drive capacity of the output buffers B2 and B3 is larger than the drive capacity of the output buffer B1.

  With this configuration, the output buffers B1 to B3 are separately provided, so that the number of parts increases, but the delay in applying the drive signal to the display unit wiring connected to the output units 23-2 and 23-3 is eliminated. It becomes possible. Further, in this case, the change of the output circuits 12-1 to 12-3 as described above can be made unnecessary.

  The present invention is applicable to a display device typified by a liquid crystal display device, a drive device that outputs an output signal to a display unit included in the display device, and an integrated circuit device provided in the drive device. Further, the present invention can be used for a drive device composite formed by integrating a plurality of drive devices.

1, 1a: Drive device (source driver)
10, 10a: Integrated circuit device (integrated circuit section)
11: Input circuit 12-1 to 12-3: Output circuit 13: Control circuit 14: Input terminal 15-1 to 15-3, 15-1a to 15-3a: Output terminal 16: Timing controller 20: Wiring unit 21: Input part 22: Input wiring 23-1 to 23-3: Output part 24-1 to 24-3: Output wiring 25: Protrusion part 30: Base material part 40: Drive device composite 41: Hole 50: Reel 60, 60a : Display device 70: Signal line 80: Display unit 81 and 82: Gate driver connection wiring 91 and 92: Gate drivers B1 to B3: Buffer E: Display element P: Pixel Source line: SL
Gate line: GLr, GLg, GLb

Claims (13)

A driving device comprising: an integrated circuit unit that generates an output signal to be output to a display unit; and a wiring unit that is electrically connected to the integrated circuit unit,
The integrated circuit unit includes a plurality of output circuits for generating the output signal,
The wiring section includes a plurality of output wirings having one end portion electrically connected to the output circuit, and a plurality of output wirings electrically connected to the other end portion of the output wiring and outputting the output signal to the outside of the driving device. And an output section of
The output unit is arranged along a predetermined direction, and a plurality of output unit groups including a plurality of the output units are provided,
The drive device according to claim 1, wherein a separation distance in the predetermined direction between the adjacent output unit groups is larger than a separation distance in the predetermined direction between the output units adjacent in the output unit group. When at least one output unit group included in one of the two driving devices is disposed between the output unit groups included in the other driving device, at least the other driving device includes One output unit group is arranged between the output unit groups included in one of the drive devices,
The drive device according to claim 1, wherein the wiring portion is formed.   3. The driving apparatus according to claim 1, wherein the distance between the adjacent output unit groups in the predetermined direction is equal to or longer than the length of each of the output unit groups in the predetermined direction. About the two drive devices, the output unit groups included in one of the drive devices and the output unit groups included in the other drive device are alternately arranged.
The drive device according to claim 3, wherein the wiring portion is formed. The integrated circuit portion has a rectangular shape in plan view;
The output units constituting each of the three output unit groups of the first output unit group, the second output unit group, and the third output unit group are in a direction parallel to the first edge of the integrated circuit unit. Arranged along the
The output circuit arranged along the first end side of the integrated circuit unit and the output unit constituting the first output unit group extend in a direction perpendicular to the first end side. The output wiring is electrically connected;
The output circuit disposed along a second end side adjacent to the first end side of the integrated circuit unit, and the output unit constituting the second output unit group, with respect to the second end side The output wiring that extends and bends in the vertical direction is electrically connected,
The output circuit disposed along a third end side adjacent to the first end side of the integrated circuit unit and facing the second end side; and the output unit constituting the third output unit group; 5. The drive device according to claim 1, wherein the output wiring that extends and bends in a direction perpendicular to the third end side is electrically connected. 6. The integrated circuit unit further includes a plurality of input circuits that process input signals and output them to the output circuit,
The wiring unit is electrically connected to a plurality of input wirings, one end of which is electrically connected to the input circuit, and the other end of the input wiring, and the input signal is input from the outside of the driving device. A plurality of input units;
The input unit is disposed along a direction parallel to the first edge of the integrated circuit unit;
The input that extends in a direction perpendicular to the fourth end side, the input circuit disposed along a fourth end side facing the first end side of the integrated circuit unit, and the input unit. The drive device according to claim 5, wherein the wiring is electrically connected.   The drive device according to any one of claims 1 to 6, wherein a stress relaxation structure is provided in at least one of the bent portions of the output wiring.   8. The drive device according to claim 7, wherein the stress relaxation structure is a structure in which the output wiring is bent so as to locally protrude in a direction perpendicular to the extending direction. The drive device according to any one of claims 1 to 8,
The display unit in which display elements are arranged in a matrix and a predetermined number of the display elements arranged in a column direction form one pixel;
With
One of the output circuits included in the driving device outputs the output signal to the display elements arranged in at least one column of the display unit,
When the display unit displays the pixels for one row, the driving device sequentially outputs the output signals corresponding to a predetermined number of the display elements constituting the pixels. .   The output buffer having a driving capability corresponding to a length of a wiring on the display unit connected to the output unit group, for at least one of the output unit groups. Display device. At least two of the drive devices according to any one of claims 1 to 8,
At least the output wiring and the output portion of each of the driving devices are formed on the same surface, and a long base portion whose longitudinal direction is parallel to the predetermined direction;
With
At least one output unit group included in one of the driving devices is disposed between two adjacent output unit groups included in the other driving device. A rectangular integrated circuit device comprising a plurality of output circuits for generating output signals to be output to a display unit,
Each of the output circuits is arranged along the three edges of the integrated circuit device such that the respective longitudinal directions are perpendicular to the corresponding edges.
An integrated circuit device characterized in that at least the three edges are provided with output terminals that are electrically connected to the output circuit and output the output signal to the outside of the integrated circuit device. Further comprising an input circuit for processing an input signal and outputting it to the output circuit;
The input circuit is disposed along one edge other than the three edges,
13. The integrated circuit according to claim 12, wherein an input terminal that is electrically connected to the input circuit and to which the input signal is input from the outside of the integrated circuit device is disposed at least on the one end side. Circuit device.

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