JP2008257191A - Active-matrix circuit board and display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an active-matrix driving display device which secures a large display area without lowering the display quality and without sharply raising a manufacturing cost, and to provide an active matrix circuit board used as a component of the display device. <P>SOLUTION: Around a through hole, a low voltage connecting portion and a high voltage connecting portion are provided which are connected to pixel driving circuits for driving pixel electrodes so that the low voltage power lines and high voltage power lines are bundled, so that a space for the power lines can be saved. Since the space for the low voltage power lines and the high voltage power lines is saved to bypass the avoidance portion, the corresponding larger display area can be secured. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an active matrix circuit substrate including drive electrodes and wiring patterns, and a display device including the active matrix circuit substrate.

In recent years, with the widespread use of various display devices (displays) made up of electro-optical devices, it has been studied to use the display devices for display units such as watches and various instruments. Thus, as a display device (display device) used as a display unit of a clock or various instruments, for example, a pointer for indicating time on a clock or indicating a scale (numerical value) on a meter is attached. Some need to form holes. As a display device in which a through hole is formed, a liquid crystal display device based on STN liquid crystal driven by passive matrix driving has been proposed (for example, see Patent Document 1).
JP 2001-75112 A

  By the way, even in a display device (display device) used for a clock or the like, not only displays a number indicating a time, but also calendar information such as “date” and “day of the week”, and also a device such as a clock. Since various types of attached functions (timer function, stopwatch function, radio wave reception function, etc.) are also displayed, there is a demand for display using active matrix driving instead of passive matrix driving.

  However, in order to perform active matrix driving, it is necessary to arrange wiring such as data lines and scan lines vertically and horizontally. As described above, when a through-hole is formed in the active matrix circuit board, which is a component of the display device, using a drill or the like, the data line and the scan line at the opening position are damaged. For example, when the display device using this active matrix circuit board is a rectangular screen, display is performed in a cross-shaped part including a through hole, that is, a display part by a pixel electrode connected to a wiring passing through the through hole by design. It will not be done. For this reason, in a matrix display body having a through hole, it is necessary to detour a wiring portion passing through the through hole in order to avoid the through hole with respect to the wiring passing through the through hole by design.

In addition, in the above-mentioned patent document 1, in order to use together with an analog indicator instrument, in a liquid crystal display device having a through-hole in a display unit, the axis of the through-hole in the X electrode and the Y electrode wired around the through-hole By forming each arc-shaped electrode part with a predetermined curvature centering on the center, high-density wiring is possible by effectively using the space around the through hole, and a unique display is provided around the through hole It is described that a liquid crystal display device that can perform the above is provided.
However, this Patent Document 1 does not consider the active matrix driving by the TFT panel at all, and therefore cannot satisfy the above-mentioned demand for display by the active matrix driving.

  As described above, in an active matrix high-definition display device, data lines (signal lines), scan lines (scan lines), etc. need to be bypassed in order to avoid through holes. In order to arrange the wiring by bypassing the hole, it becomes impossible to provide a pixel driving circuit for driving the pixel electrode at the position where the wiring is formed. In particular, when the resolution is high, the number of wirings to be detoured becomes very large, and the area for forming the pixel driving circuit is further limited accordingly. As a result, display cannot be performed around the through-hole, and therefore the entire display area is reduced.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an active matrix drive display that ensures a large display area without degrading display quality and without causing a significant increase in manufacturing cost. It is an object of the present invention to provide an apparatus and an active matrix circuit board as a component of the apparatus.

  An active matrix circuit substrate according to the present invention includes a substrate in which an avoidance unit is provided in a predetermined region, a plurality of pixel electrodes provided on the substrate, and the plurality of pixel electrodes provided on the substrate. A drive circuit that includes a plurality of power supply lines provided on the substrate and electrically connected to the drive circuit, a part of the wiring having a bypass portion that bypasses the avoidance unit, and the substrate. And a connection portion connected to the power supply line so as to gather a part of the plurality of power supply lines.

  According to the present invention, among the plurality of power supply lines connected to the drive circuit for driving the pixel electrode, the peripheral portion of the avoidance portion on the substrate is connected to the power supply line so as to collect a predetermined number of power supply lines. Since the connected portions are provided, it is possible to save the space where the power supply lines are provided. Since the space for the power supply line is saved and the avoidance unit is bypassed, a large display area can be secured accordingly. For the “avoidance part”, for example, an area where wiring cannot be physically arranged, such as a through-hole provided in the substrate, or an area where other wiring is provided, causes an electrical short circuit. It includes areas that cannot be used.

The active matrix substrate is characterized in that the connection portion is provided on the outermost periphery with respect to the avoidance portion among the bypass portions of the plurality of wirings.
According to the present invention, since the connection portion is provided on the outermost periphery with respect to the avoidance portion among the bypass portions of the plurality of wirings, the power lines can be easily bundled. Thereby, the space which avoids an avoidance part can be saved as much as possible.

The active matrix circuit board is characterized in that the connecting portion is connected to all of the plurality of power supply lines.
According to the present invention, since the connection portion is connected to all of the plurality of power supply lines, the space for arranging the power supply lines can be saved greatly.

The active matrix substrate is characterized in that the connection portion is provided in an annular shape so as to surround the avoidance portion.
According to the present invention, since the connection portion is provided in an annular shape so as to surround the avoidance portion, the power lines can be gathered and can be connected from any portion around the avoidance portion. . Thereby, an avoidance part can be made easy to avoid.

  A display device according to the present invention includes a first substrate and a second substrate that are arranged to face each other and sandwich an electro-optic material layer, a pixel electrode that is provided on a surface of the first substrate facing the second substrate, A display device comprising a counter electrode provided on a surface facing the first substrate of the second substrate, wherein the first substrate is the active matrix circuit substrate.

  According to the present invention, since the active matrix circuit board capable of securing a large display area by saving the wiring space and bypassing the avoidance portion is mounted, it is possible to manufacture without reducing the display quality. It is possible to obtain an active matrix driving display device that secures a large display area without causing a significant increase in cost.

In the above display device, the electro-optical material layer includes an electrophoretic dispersion liquid including electrophoretic particles and a liquid phase dispersion medium in which the electrophoretic particles are dispersed.
According to the present invention, since the electrophoretic elements constituting the display device have display retention (memory property), for example, when the display is fixed, the electric field applied to the electrophoretic particles can be eliminated. , The display is held in a state by a previously applied electric field. Therefore, power consumption can be reduced.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of a wristwatch 1 including a display device according to the present embodiment.
As shown in the figure, the wristwatch 1 is mainly composed of a watch case 2 and a pair of bands 3 connected to the watch case 2.

  The watch case 2 is made of a metal such as stainless steel or a resin such as a plastic resin. A display device 5, a second hand 21, a minute hand 22, and an hour hand 23 are provided on the front surface of the watch case 2. On the side surface of the watch case 2, a crown 10 as an operation element and an operation button 11 are provided. The crown 10 is connected to a winding stem (not shown) provided inside the case. The crown 10 is integrated with the winding stem and can be pushed and pulled in multiple stages (for example, two stages) and can be rotated. Yes.

FIG. 2 is a side sectional view of the wristwatch 1.
As shown in the figure, a housing portion 2 </ b> A is provided inside the watch case 2. A movement 4 and a display device 5 are accommodated in the accommodating portion 2A.

  The movement 4 has a hand movement mechanism (not shown) to which an analog pointer consisting of a second hand 21, a minute hand 22, and an hour hand 23 are connected. This hand movement mechanism rotates the analog hands 21 to 23 to function as a time display unit that displays a set time.

  The display device 5 is configured by an active matrix driving electrophoretic display device, for example, and is arranged on the front side of the movement 4. The display device 5 constitutes a display unit of the wristwatch 1. The display surface of the display device 5 is circular here. As for the shape of the display surface, in addition to the circular shape, other shapes such as a regular octagonal shape and a dodecagonal shape may be used.

  A through hole 5 </ b> A penetrating the front and back of the display device 5 is formed at the center of the display device 5. The shafts of the second wheel 24, second wheel 25, and hour wheel 26 of the hand movement mechanism (not shown) of the movement 4 are inserted into the through hole 5A. The second hand 21, the minute hand 22, and the hour hand 23 described above are attached to the tip of each shaft.

  A transparent cover 7 made of glass or resin is provided on one end side (the front side of the watch) of the housing portion 2A. The transparent cover 7 is press-fitted and fixed to the housing portion 2A via a resin-made or metal press-fit ring 6. A back cover 9 is screwed to the other end side (watch back side) of the accommodating portion 2 </ b> A via a packing 8. The back cover 9 and the transparent cover 7 ensure the sealing performance inside the watch case 2.

FIG. 3 is a cross-sectional view schematically showing the configuration of the display device 5.
As shown in the figure, the display device 5 is mainly composed of a first substrate (active matrix circuit substrate) 30, a second substrate 31, and an electrophoretic layer 32.

  The first substrate 30 and the second substrate 31 are opposed to each other so as to sandwich the electrophoretic layer 32. A pixel electrode 35 (see FIG. 7 and the like) is formed on the inner surface of the first substrate 30 (the surface facing the second substrate). A common electrode (counter electrode) 37 made of a transparent conductive material such as ITO is formed on the inner surface of the second substrate 31 (the surface facing the first substrate 30). The outer surface of the second substrate 31 is a display surface on which images such as still images and moving images are displayed. In the center of the first substrate 30 and the second substrate 31, the above-described through hole 5A is formed. The through hole 5 </ b> A is formed so as to penetrate the overlapping region in the plan view of the first substrate 30 and the second substrate 31. A seal portion 51 is provided on the inner surface of the through hole 5A. The seal portion 51 is provided so as to seal a region between the first substrate 30 and the second substrate 31 (region where the electrophoretic layer 32 is provided).

  As shown in FIGS. 4A and 4B, the electrophoretic layer 32 is mainly composed of a large number of microcapsules 24. Each microcapsule 24 encloses an electrophoretic dispersion liquid (electro-optical material) 25. The electrophoretic dispersion liquid 25 has many positively charged black electrophoretic particles (hereinafter referred to as black particles) 26 and many negatively charged white electrophoretic particles (hereinafter referred to as white particles) 27. Each is dispersed in a liquid phase dispersion medium (not shown). The electrophoretic dispersion liquid 25 is not limited to the above two-particle type, and a one-particle type can also be used. In this case, a colored liquid phase dispersion medium may be used. In both the two-particle system and the one-particle system, various colors other than white and black can be adopted as the particle color.

  The operation of the electrophoretic element 28 will be described. As shown in FIG. 4A, when the potential of the common electrode 37 is relatively higher than the potential of the pixel electrode 35, the negatively charged white particles 27 move (migrate) to the common electrode 37 side, and are positive. The black particles 26 charged to move to the pixel electrode 35 side (migrate). As a result, when the common electrode 37 side, which is the display surface side, is viewed, white is recognized in the pixel portion corresponding to the electrophoretic element 28.

  On the other hand, as shown in FIG. 4B, when the potential of the pixel electrode 35 is relatively higher than the potential of the common electrode 37, the positively charged black particles 26 move (migrate) to the common electrode 37 side. The negatively charged white particles 27 move (migrate) to the pixel electrode 35 side. As a result, when the common electrode 37 side is viewed, black is recognized in the pixel portion corresponding to the electrophoretic element 28. In this manner, by displaying white or black for each pixel portion, the display device 5 in which these pixel portions are basically arranged in a matrix can display a pattern composed of white or black. .

FIG. 5 is a plan view schematically showing the configuration of the pixels of the display device 5.
In the display device 5, in the display region 70 (see FIG. 7) other than the peripheral portion 71 (see FIG. 7) of the through-hole 5A in a plan view, as shown in FIG. Is arranged. As shown in the circuit diagram of FIG. 6, each pixel unit 40 includes a transistor 41 as a switching element, a latch circuit 46 configured by combining four transistors 42, 43, 44, 45, an electrophoretic element 28, and the like. It has. The transistor 41 and the latch circuit 46 constitute the pixel drive circuit 34 described above.

  The transistor 41 is, for example, a field effect type n-channel transistor, and has a gate connected to a scan line (scan line) 47, one source drain (input end) connected to a data line (signal line) 48, and the other Are connected to the input terminal of the latch circuit 46.

  The latch circuit (flip-flop circuit) 46 is configured by combining, for example, two field-effect n-channel transistors 42 and 44 and two field-effect p-channel transistors 43 and 45. The transistors 42 and 43 have one source / drain connected to each other, the other source / drain of the transistor 42 is connected to a low voltage power line 49, and the other source / drain of the transistor 43 has a high voltage power line 50. It is connected to the. Similarly, one source / drain of the transistors 44 and 45 is connected to each other, the other source / drain of the transistor 44 is connected to the low voltage power line 49, and the other source / drain of the transistor 45 is connected to the high voltage power source. Connected to line 50.

  The gates of the transistors 42 and 43 are connected to a connection point N1 between the sources and drains of the transistors 44 and 45. The connection point N1 functions as an input terminal of the latch circuit 46. The input terminal N1 is connected to the other source / drain (output terminal) of the transistor 41. The gates of the transistors 44 and 45 are connected to a connection point N2 between the sources and drains of the transistors 42 and 43. The connection point N2 functions as an output terminal of the latch circuit 46. The output terminal N2 of the latch circuit 46 is connected to the pixel electrode 35, that is, the electrode on one side of the electrophoretic element 28. With such a configuration, the latch circuit 46 has a low potential VSS at the output terminal N2 when the potential applied to the input terminal N1 is high, and the potential applied to the input terminal N1 is low. Sometimes the high potential VEP appears at the output terminal N2.

  FIG. 7 is a plan view showing a schematic configuration of the display device 5. As shown in FIG. 7, the pixel electrodes 35 are arranged in a matrix in the display area 70, and the pixel electrode 35 is not provided in the peripheral portion 71 of the through hole 5 </ b> A. Wiring and the like for transmitting various signals are provided in the peripheral portion 71 of the through hole 5A.

FIG. 8 is a plan view showing the configuration of the peripheral portion 71 of the through hole 5 </ b> A in the display device 5.
As shown in the figure, in the display area 70, the scanning lines 47 extend in the row direction of the matrix and are arranged along the column direction, and the low voltage power supply lines 49 are arranged in the matrix in the same manner as the scanning lines 47. Extending in the row direction and arranged in the column direction. In the display area 70, the low voltage power supply lines 49 and the scanning lines 47 are alternately provided in the column direction of the matrix (the arrangement direction of the low voltage power supply lines 49 and the scanning lines 47).

  In the display area 70, the data lines 48 extend in the column direction of the matrix and are arranged along the row direction, and the high voltage power supply lines 50 are arranged in the row direction of the matrix in this area like the data lines 48. It extends and is arranged along the column direction. In the display region 70, the high voltage power supply lines 50 and the data lines 48 are alternately provided in the column direction of the matrix (the arrangement direction of the high voltage power supply lines 50 and the data lines 48).

  The peripheral portion 71 of the through-hole 5A is a portion that is arranged at a position that passes through the through-hole 5A by design, that is, a portion that passes through a portion where the through-hole 5A is formed if there is no through-hole 5A. In this portion, both the scanning line 47 and the data line 48 are provided with detour wiring portions 47a and 48a that circumvent the periphery of the through hole 5A.

A seal portion 51 that seals the periphery of the through hole 5A is formed in the peripheral portion 71 of the through hole 5A. The seal portion 51 is an area through which the scanning line 47 and the data line 48 cannot pass. Therefore, here, the through hole 5A and the seal portion 51 are the avoidance portions.
Of the scanning lines 47 and the data lines 48, not only those that are designed to pass through the through-hole 5A, but also those that are designed to pass through the seal part 51, the seal portion 51 is used. Detour wiring portions 47a and 48a that circumvent the surroundings are provided.

  In order to avoid the bypass wiring portions 47a and 48a, the bypass wiring portions are also formed in the scanning lines 47 and the data lines 48 located in the vicinity of the scanning lines 47 and the data lines 48 in which the bypass wiring portions 47a and 48a are formed. There is a need to. For such scanning lines 47 and data lines 48 as well, in the present embodiment, detour wiring portions 47a and 48a are respectively formed. In the present embodiment, in addition to the through hole 5 </ b> A and the seal portion 51, the bypass wirings 47 a and 48 a located in the vicinity thereof are also the avoidance portion 52.

  Further, a low voltage connection portion 59 connected to each low voltage power supply line 49 and a high voltage connection portion 60 connected to each high voltage power supply line 50 are provided in the peripheral portion 71 of the through hole 5A. . The low voltage connection portion 59 and the high voltage connection portion 60 are made of a conductive material such as metal or ITO, and are provided in a ring shape, for example, a regular octagonal ring shape in plan view, so as to surround the avoidance portion 52. The low voltage connection portion 59 and the high voltage connection portion 60 are provided outside the aforementioned bypass wiring portion 47a and the bypass wiring portion 48a in the peripheral portion 71 of the through hole 5A. It is provided on the outermost periphery. In FIG. 8, the low voltage connection part 59 is provided on the outer side, and the high voltage connection part 60 is provided on the inner side. Each low-voltage power line 49 and each high-voltage power line 50 are configured to avoid the avoiding part 52 in a state where the low-voltage connecting part 59 and the high-voltage connecting part 60 are grouped into one wiring part. .

  FIG. 9 is a diagram illustrating a configuration along the AA cross section of FIG. 8. FIG. 10 is a diagram showing a configuration along the BB cross section of FIG.

  As shown in FIGS. 9 and 10, a pixel drive circuit 34 is provided on the glass substrate 33. The pixel electrodes 35 are provided in an upper layer of the pixel drive circuit 34 and are arranged in a matrix at positions overlapping the pixel drive circuit 34 in plan view. The pixel electrode 35 and the pixel drive circuit 34 are electrically connected through a contact hole 61.

  On the glass substrate 33, a scanning line 47, a low voltage connection portion 59, and a high voltage connection portion 60 are provided. An insulating layer 67 is provided on the scanning line 47, the low voltage connection portion 59 and the high voltage connection portion 60 so as to cover them. The scanning line 47 is provided on the insulating layer 67 through, for example, a contact hole 62 at a portion intersecting the low voltage connection portion 59 and the high voltage connection portion 60 in plan view. A data line 48 is provided on the insulating layer 67. An insulating layer 68 is provided on the data line 48 so as to cover the data line 48. The pixel electrode 35 is provided on the insulating layer 68.

  In the region where the scanning line 47 or the data line 48 is provided in the layer on the glass substrate 33, the low voltage connection portion 59 and the high voltage connection portion 60 are insulated layers so as to avoid the scanning line 47 or the data line 48. 67 (for example, a low voltage connection portion 59a and a high voltage connection portion 60a extending in the column direction in FIG. 8). In a region where the scanning line 47 or the data line 48 is provided in a layer on the insulating layer 67, the low voltage connection portion 59 and the high voltage connection portion 60 are arranged so as to avoid the scanning line 47 or the data line 48. 33 (for example, a low voltage connection portion 59b and a high voltage connection portion 60b extending at an angle of 45 ° with respect to the column direction in FIG. 8). The low voltage connection portion 59a and the high voltage connection portion 60a on the insulating layer 67 and the low voltage connection portion 59b and the high voltage connection portion 60b on the glass substrate 33 are electrically connected by contact plugs 59c and 60c. ing.

  Normally, when driving pixels arranged in a matrix, as shown in FIG. 11A, power supply wirings 80 and signal wirings 81 (scanning lines, data lines) are alternately arranged. The power supply wiring 80 and the signal wiring 81 are provided for each line in which pixels are arranged. Since they are arranged at a distance so as not to be short-circuited with each other, they are spread out in the line direction of the pixels. For this reason, there is a problem that the display area becomes narrow accordingly.

  On the other hand, according to the present embodiment, as shown in FIG. 11B, in the peripheral portion 71 of the through hole 5A, the low voltage power supply line 49 connected to the pixel driving circuit 34 that drives the pixel electrode 35. Since the low voltage connection line 59 and the high voltage connection line 60 connected to the low voltage power supply line 49 and the high voltage power supply line 50 are provided so as to collect the high voltage power supply line 50, It is possible to save the space where the power supply line is provided. Since the space for the low-voltage power line 49 and the high-voltage power line 50 is saved and the avoiding unit 52 is bypassed, a large display area can be secured accordingly.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. FIG. 12 is a plan view showing the configuration of the display device 105 according to the present embodiment.
In the present embodiment, the display device 105 has substantially the same configuration as the display device 5 of the first embodiment, but avoids from the outside of the avoidance unit 152 in addition to the pixel electrodes 135 arranged in a matrix. The second embodiment is different from the first embodiment in that a pixel electrode 135c extending toward the inside of the portion 152 is provided.

  According to such a configuration, since the pixel electrode 135c can be provided also in the avoidance unit 152, the same effect as that of the first embodiment can be obtained and the display area can be widened. Will be played.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. FIG. 13 is a plan view showing the configuration of the display device 205 according to the present embodiment.
In the present embodiment, the display device 205 has substantially the same configuration as the display device 5 of the first embodiment, but covers the avoiding unit 252 in addition to the pixel electrodes 235 arranged in a matrix. This is different from the first embodiment in that an annular pixel electrode 235c is provided.

  According to such a configuration, as in the second embodiment, the pixel electrode 235c can be provided also in the avoidance unit 252. Therefore, the same effect as in the first embodiment can be obtained, and the display area can be reduced. The effect that it can be widened will be produced.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described. FIG. 14 is a plan view showing the configuration of the display device 305 according to the present embodiment.
The display device 305 according to the present embodiment is configured such that the scanning lines 347 are arranged obliquely (for example, at 45 °) without causing the scanning lines 347 and the data lines 348 to be orthogonal to each other. In the region where the pixel electrodes 335 are arranged in a matrix, low voltage power supply lines 349 are provided between the scanning lines 347, and the scanning lines 347 and the low voltage power supply lines 349 are alternately arranged. Similarly, in this region, the high voltage power supply line 350 is provided between the data lines 348, and the data lines 348 and the high voltage power supply lines 350 are alternately arranged. Around the through-hole 305A and the sealing material 351 (avoidance part 352), a connection part connected to the low-voltage power line 349 and the high-voltage power line 350 so that the low-voltage power line 349 and the high-voltage power line 350 are collected. 359 is provided.

  In the above configuration, the scanning lines 347 are arranged obliquely, but the data lines 348 may be arranged obliquely. In the above configuration, the low voltage power supply line 349 and the high voltage power supply line 350 are connected to the common connection portion 359, but different connection portions may be provided.

  Thus, even when the arrangement of the scanning lines 347 and the data lines 348 is changed with respect to the first embodiment, the connection portion 359 for connecting the low voltage power supply line 349 and the high voltage power supply line 350 together is provided. Since it is provided, the avoidance unit 352 can be avoided while saving the space of the low voltage power line 349 and the high voltage power line 350. Thereby, the effect similar to 1st Embodiment can be acquired.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described.
In the present embodiment, only a part of the avoidance unit is configured in the display area of the display device.

  Specifically, as shown in FIG. 15, when the planar shape of the display device 405 is a regular octagon and a through hole 405A is formed at the center thereof, a display area provided with scanning lines 447 and data lines 448 is provided. The display area may be formed so that half of the through-hole 405A is located on the side and the other half is located on the non-display area side. In FIG. 15, reference numeral 463 denotes a gate driver, and reference numeral 464 denotes a data driver.

  As another example of forming a part of the avoidance portion in the display area, as shown in FIG. 16, when the planar shape of the display device 505 is a regular octagon and a through hole 505A is formed at the center thereof, The display area may be formed such that ¼ of the through-hole 505A is located on the display area side where the scanning lines 547 and the data lines 548 are provided, and the rest is located on the non-display area side. In FIG. 16, reference numeral 563 denotes a gate driver, and reference numeral 564 denotes a data driver.

  As described above, by applying the present invention to the configuration in which a part of the avoidance portion is formed in the display area, the active matrix circuit board of the present invention can be applied even to a display device having a relatively small display area. It becomes possible to make it. Therefore, application to a display device that extends the battery life by narrowing the display area and suppressing power consumption is facilitated.

The technical scope of the present invention is not limited to the above-described embodiment, and appropriate modifications can be made without departing from the spirit of the present invention.
In the above embodiment, the planar shape of the low voltage connection portion and the high voltage connection portion is an octagonal ring, but is not limited thereto. For example, as shown in FIG. 17, the low voltage connection portion 659 and the high voltage connection portion 660 may be formed in a square ring shape.

  Further, not only the octagonal shape of the low voltage connection portion and the high voltage connection portion of the display device as in the above embodiment, but also the low voltage connection portion and the high voltage connection portion of the display device 705 as shown in FIG. The planar shape may be formed in a rectangular shape so as to overlap in a planar manner, and may be formed of different layers. Even in the case of a rectangular shape, the display area in the vicinity of the avoidance portion such as the through-hole 705A can be expanded. In addition, by making the low voltage connection portion and the high voltage connection portion rectangular in different layers, the low potential power supply line and the high potential power supply line are connected to different layers using contact plugs in order to avoid scanning lines and data lines. Since there is no need to make an electrical connection, it is not necessary to form a contact plug. In FIG. 18, reference numeral 761 denotes a gate driver, and reference numeral 762 denotes a source driver.

  Further, as an example of a special shape, as shown in FIG. 19, the planar shape of the display device 805 may be configured in a heart shape. In these cases, the display area in the vicinity of the avoidance portion such as the through hole 805A can be expanded in the same manner as described above. In FIG. 19, reference numeral 861 denotes a gate driver, and reference numeral 862 denotes a source driver.

  In the above embodiment, an electrophoretic dispersion liquid is used as an electro-optical material, and display is performed by configuring an electrophoretic element. However, for example, by using a liquid crystal material as an electro-optical material, liquid crystal can be used. The display element may be configured, or the organic EL element may be configured by using an organic EL material.

  Moreover, although the example which applied the display apparatus of this invention to the wristwatch was shown in the said embodiment, of course, it is applicable also to a table clock, a wall clock, a wall clock, a pocket watch, etc. In addition to the timepiece, the present invention can be applied to various instruments having a pointer, and can also be applied to various display devices having an avoiding portion other than a through hole.

  As an example of a display device provided with a pointer in the center of the display unit, for example, as shown in FIG. 20, various instruments such as a speed meter 902 and a rotational speed meter 903 provided in an instrument panel 901 of an automobile can be mentioned. . Guides 904 and 905 are provided at the center of the speed meter 902 and the revolution meter 903, respectively, and holes 906 and 907 through which the hands 904 and 905 are inserted are provided in the display device. Small meters such as a fuel meter 908 and a water temperature meter 909 are provided on the sides of the speed meter 902 and the revolution meter 903. These small meters are also provided with pointers 911 and 912, and the display device is provided with holes 913 and 914 through which the pointers 911 and 912 are inserted. If the display device of the above embodiment is applied to this type of instrument, an instrument having a large display area can be realized. In particular, when an organic EL is used as the electro-optical material, a large display area can be secured, and a bright display by self-light emission can be obtained even at night.

The front view of the wristwatch which concerns on the display apparatus of this invention. A side sectional view of a wristwatch. The side sectional view of a display. Operation | movement explanatory drawing of an electrophoretic element. The figure which shows display areas other than the peripheral part of the through-hole of a display apparatus. FIG. 7 is an equivalent circuit diagram of a pixel portion of a display device. The top view which shows the structure of a display apparatus. Plan view showing a part of the structure of the display device The figure which shows the cross-sectional structure of the 1st board | substrate of a display apparatus. The figure which shows the cross-sectional structure of the 1st board | substrate of a display apparatus. The figure which shows the effect by putting together the wiring for power supply lines. The top view which shows the structure of the display apparatus which concerns on 2nd Embodiment of this invention. The top view which shows the structure of the display apparatus which concerns on 3rd Embodiment of this invention. The top view which shows the structure of the display apparatus which concerns on 4th Embodiment of this invention. The top view which shows the structure of the display apparatus which concerns on 5th Embodiment of this invention. FIG. The top view which shows the other structure of the display apparatus which concerns on this invention. The top view which shows the other structure of the display apparatus which concerns on this invention. The top view which shows the other structure of the display apparatus which concerns on this invention. The top view which shows the various instruments of the motor vehicle provided with the display apparatus which concerns on this invention.

Explanation of symbols

      DESCRIPTION OF SYMBOLS 1 ... Wristwatch 5 ... Display apparatus 5A ... Through-hole 30 ... 1st board | substrate 31 ... 2nd board | substrate 32 ... Electrophoresis layer 33 ... Glass substrate 34 ... Pixel drive circuit 35 ... Pixel electrode 35c ... Pixel electrode 37 ... Common electrode 40 ... Pixel Reference numeral 47 ... Scanning line 48 ... Data line 49 ... Low voltage power supply line 50 ... High voltage power supply line 51 ... Seal part 52 ... Avoidance part 59 ... Low voltage connection part 60 ... High voltage connection part

Claims (6)

A substrate provided with an avoidance portion in a predetermined area;
A plurality of pixel electrodes provided on the substrate;
A driving circuit provided on the substrate and driving the plurality of pixel electrodes;
A plurality of wirings provided on the substrate and including a plurality of power supply lines electrically connected to the drive circuit, and a part of the wirings having a detour part that bypasses the avoidance unit;
An active matrix circuit, comprising: a connection portion provided on a peripheral portion of the avoidance portion on the substrate and connected to the power supply line so as to collect a part of the plurality of power supply lines; substrate. The active matrix circuit board according to claim 1, wherein the connection portion is provided on an outermost periphery with respect to the avoidance portion among the bypass portions of the plurality of wirings. The active matrix circuit board according to claim 1, wherein the connection portion is connected to all of the plurality of power supply lines. The active matrix circuit board according to any one of claims 1 to 3, wherein the connection portion is provided in an annular shape so as to surround the avoidance portion. A first substrate and a second substrate which are arranged opposite to each other and sandwich the electro-optical material layer;
A pixel electrode provided on a surface of the first substrate facing the second substrate;
A display device comprising: a counter electrode provided on a surface facing the first substrate of the second substrate,
The display device, wherein the first substrate is the active matrix circuit substrate according to any one of claims 1 to 4.   The display device according to claim 5, wherein the electro-optical material layer includes an electrophoretic dispersion liquid including electrophoretic particles and a liquid phase dispersion medium in which the electrophoretic particles are dispersed.

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