KR20080084676A - Active matrix circuit board and display apparatus - Google Patents

Abstract

An active matrix circuit board and a display device comprising the same are provided to secure a large display area even without lowering the display quality and reduce a manufacturing cost. Pixel driving circuits are formed on a glass substrate. Pixel electrodes are formed above the pixel driving circuits. The pixel electrodes are arranged in a matrix type at positions overlapping the corresponding pixel driving circuits in a plan view. The pixel electrode and the pixel driving circuit are electrically connected to each other through a contact hole. Scanning lines(47), a low-voltage connecting part(59), and a high-voltage connecting part(60) are formed on the glass substrate. A first insulating layer covers the scanning lines, the low-voltage connecting part, and the high-voltage connecting part. Data lines(48) are formed on the first insulating layer. A second insulating layer covers the data lines. The pixel electrodes are formed on the second insulating layer. The low-voltage connecting part and the high-voltage connecting part are disposed on the first insulating layer such that the low-voltage connecting part and the high-voltage connecting part avoid the scanning lines and the data lines.

Description

ACTIVE MATRIX CIRCUIT BOARD AND DISPLAY APPARATUS}

The present invention relates to an active matrix circuit board comprising a drive electrode and a wiring pattern, and a display device including the active matrix circuit board.

In recent years, with the spread of various display apparatuses (displays) consisting of electro-optical devices, the use of the above-described display apparatuses has also been considered for display units such as watches and various meters. As such, as a display device (display device) used as a display unit such as a clock or various measuring instruments, for example, a through-hole is used for attaching a guide for displaying time on a clock or displaying a scale on a meter. There is something that must be formed. As a display device in which a through hole is formed, a liquid crystal display device on the premise of STN liquid crystal that is passive matrix driving is proposed (see Patent Document 1, for example).

[Patent Document 1] Japanese Patent Application Laid-Open No. 2001-75112

By the way, a display device (display device) used for a clock or the like not only displays a number indicating a simple time, but also calendar information such as "date" and "day of the week", and various functions attached to a device such as a clock ( Since the display is also performed with respect to a timer function, a stopwatch function, a radio wave reception function, and the like, there is a desire to perform display by active matrix driving instead of passive matrix driving.

However, in order to drive an active matrix, wiring such as data lines and scanning lines must be arranged vertically and horizontally. As described above, when a through hole is formed in an active matrix circuit board serving as a component of a display device by a drill or the like, the data line and the scan line at the hole position are damaged. For example, when the display device using this active matrix circuit board is a rectangular screen, the display is performed in a cross-shaped portion including a through hole, that is, a display portion by a pixel electrode connected to a wiring passing through the through hole by design. You won't lose. For this reason, in the matrix display having the through holes, it is necessary to bypass the wiring portion applied to the through holes in order to avoid the through holes with respect to the wirings passing through the through holes by design.

Moreover, in the above-mentioned patent document 1, in order to use together with an analog indication instrument, in the liquid crystal display device which has a through-hole in a display part, it centers around the axis of a through-hole to the X electrode and Y electrode which are wired around the through-hole. By forming each of the arc-shaped electrode portions having a predetermined curvature, a liquid crystal display device is provided which enables high-density wiring by effectively utilizing the peripheral space of the through hole, and makes it possible to display an unusual display around the through hole. It is described. However, this patent document 1 does not consider the active matrix drive by a TFT panel at all, and therefore cannot satisfy the above-mentioned desire to display by active matrix drive.

As described above, in a high-definition display device of the active matrix system, wiring such as data lines (signal lines) and scanning lines need to be bypassed in order to avoid through holes, but in order to bypass the through holes in order to arrange the wirings. The pixel driving circuit for driving the pixel electrode cannot be disposed 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. As a result, display cannot be performed in the periphery of the through hole, and thus the entire display area becomes small.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a display device of an active matrix drive in which a large display area is secured without lowering display quality and causing a significant increase in manufacturing cost. It is to provide an active matrix circuit board which is a component.

An active matrix circuit board according to the present invention includes a substrate provided with a avoiding portion in a predetermined region, 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, the plurality of power lines being electrically connected to the driving circuit, the wirings having a bypass portion, part of which bypasses the avoiding portion, and a peripheral portion of the avoiding portion on the substrate; And a connection part connected to the power supply line so as to integrate a part of the plurality of power supply lines.

According to the present invention, since the connecting portion connected to the power supply line is provided at the periphery of the avoiding part on the substrate among the plurality of power supply lines connected to the driving circuit for driving the pixel electrode, the predetermined number of power supply lines are integrated. This integration saves space in which power lines are provided. Since the space of the power supply line is saved and the avoiding part is bypassed, it is possible to ensure a large display area. The "avoidance part" includes a region where wiring cannot be arranged because an electrical short circuit occurs, such as a region where wiring cannot be physically arranged, such as a through hole provided in a substrate, or a region where other wiring is provided. .

The said active matrix board | substrate is characterized in that the said connection part is provided in outermost periphery with respect to the said avoiding part among the said bypass parts of the some wiring.

According to this invention, since the connection part is provided in the outermost periphery with respect to the avoiding part among the bypass parts of several wiring, it can make it easy to integrate a power supply line. As a result, the space for avoiding the avoiding part can be saved as much as possible.

The said active matrix circuit board is characterized by the said connection part connected to all of the said some power supply line.

According to this invention, since the connection part is connected to all of the some power supply line, the space which arrange | positions a power supply line can be saved significantly by that much.

The said active matrix board | substrate is provided in the annular shape so that the said connection part may enclose the said avoidance part. It is characterized by the above-mentioned.

According to the present invention, since the connecting portion is provided in an annular shape so as to surround the avoiding portion, the power line can be integrated and can be connected from any part around the avoiding portion. As a result, the avoiding part can be easily avoided.

A display device according to the present invention includes a first substrate and a second substrate disposed to face each other and having an electro-optic material layer interposed therebetween, a pixel electrode provided on an opposing surface of the first substrate with the second substrate, A display device comprising a counter electrode provided on an opposing surface of the second substrate with the first substrate, wherein the first substrate is the active matrix circuit board.

According to the present invention, since an active matrix circuit board capable of securing a large display area by saving wiring space and bypassing the avoidance part is mounted, the display quality is not lowered and the manufacturing cost is increased significantly. Instead, an active matrix drive display device having a large display area can be obtained.

The display device is characterized in that the electro-optic material layer comprises an electrophoretic dispersion composed of electrophoretic particles and a liquid dispersion medium for dispersing the electrophoretic particles.

According to the present invention, since the electrophoretic element constituting the display device has display retention (memory), for example, when the display is fixed, the display is applied even before the electric field applied to the electrophoretic particles is removed. Is maintained by the electric field. Therefore, the power consumption can be reduced.

According to the present invention, it is possible to provide an active matrix drive display device which ensures a large display area without lowering the display quality and causing a significant increase in manufacturing cost, and an active matrix circuit board comprising the components thereof. Can be.

(Example 1)

EMBODIMENT OF THE INVENTION Hereinafter, based on drawing, Example 1 of this invention is described.

1 is a front view of a wrist watch 1 having a display device according to the present embodiment.

As shown in FIG. 1, the watch 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 metal such as stainless steel or resin such as plastic resin. The front of the watch case 2 is provided with a display device 5, a second hand 21, a minute hand 22, and an hour hand 23. The crown 10 and the operation button 11 as an operator are provided on the side of the watch case 2. The crown 10 is connected to a winding (not shown) provided inside the case, is integrated with the winding, and is freely taken out in a multi-stage layer (for example, two stages), and is provided freely for rotation.

2 is a side cross-sectional view of the wrist watch 1.

As shown in FIG. 2, a housing portion 2A is provided inside the watch case 2. The movement 4 and the display apparatus 5 are accommodated in 2 A of accommodation parts.

The movement 4 has a drift mechanism (not shown) to which the analogue instructions which consist of the second hand 21, the minute hand 22, and the hour hand 23 are connected. This driving mechanism rotates and drives the analog instructions 21 to 23 so as to function as a time display unit for displaying the set time.

 The display apparatus 5 is comprised by the electrophoretic display apparatus of active matrix drive, for example, and is arrange | positioned in the clock | front view side of the movement 4. This display device 5 constitutes a display portion of the watch 1. The display surface of the display device 5 has a circular shape here. The shape of the display surface may have other shapes, such as a regular octagonal shape and a hexagonal shape, in addition to the circular shape.

In the center of the display device 5, a through hole 5A penetrating the front and back of the display device 5 is formed. In each of the through holes 5A, the shafts of the supercar 24, the second car 25, and the tub 26 of the driving mechanism (not shown) of the movement 4 are inserted. The second hand 21, the minute hand 22, and the hour hand 23 mentioned above are attached to the front-end | tip of each axis, respectively.

The transparent cover 7 made of glass or resin is provided on one end side (clock face side) of the housing portion 2A. The transparent cover 7 is press-fitted to the housing portion 2A via a resin or metal press ring 6. The rear lid 9 is screwed to the other end side (the clock backside) of the housing portion 2A via the packing 8. The sealing property of the inside of the watch case 2 is ensured by the back cover 9 and the transparent cover 7.

3 is a cross-sectional view schematically illustrating the configuration of the display device 5.

As shown in FIG. 3, the display device 5 mainly includes a first substrate (active matrix circuit board) 30, a second substrate 31, and an electrophoretic layer 32. .

The first substrate 30 and the second substrate 31 are disposed to face each other so as to hold the electrophoretic layer 32 therebetween. The pixel electrode 35 (refer FIG. 7 etc.) is formed in the inner surface (opposing surface of a 2nd board | substrate) of the 1st board | substrate 30. As shown in FIG. The common electrode (counter electrode) 37 which consists of a transparent conductive material, such as ITO, is formed in the inner surface (counter surface of the 1st board | substrate 30) of the 2nd board | substrate 31. As shown in FIG. The outer surface of the second substrate 31 is a display surface on which an image such as a still image or a moving image is displayed. The through-hole 5A mentioned above is formed in the center of the 1st board | substrate 30 and the 2nd board | substrate 31. FIG. 5 A of through-holes are formed so that the 1st board | substrate 30 and the 2nd board | substrate 31 may penetrate the area | region which overlaps in plan view. The sealing part 51 is provided in the inner side surface of 5 A of through-holes. The sealing part 51 is provided so that the area | region (region in which the electrophoretic layer 32 is provided) between the 1st board | substrate 30 and the 2nd board | substrate 31 may be sealed.

The electrophoretic layer 32 is composed mainly of a plurality of microcapsules 24, as shown in Figs. 4 (a) and 4 (b). Each microcapsule 24 is filled with an electrophoretic dispersion liquid (electro-optic material) 25, respectively. The electrophoretic dispersion 25 is black electrophoretic particles (hereinafter referred to as black particles) 26 positively charged and white electrophoretic particles (hereinafter, white) charged negatively. The particle | grains 27) are each disperse | distributed in liquid dispersion medium (not shown) several pieces, respectively. About the electrophoretic dispersion 25, it is not limited to the said 2-particle system, The thing of 1 particle system can also be used. In this case, what was colored with respect to the liquid dispersion medium can also be used. In either the two-particle system or the one-particle system, various colors other than white and black can be adopted for the color of the particles.

The operation of this 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 toward the common electrode 37. The black particles 26 charged (positively) and positively charged move (move) to the pixel electrode 35 side. As a result, looking at the side of the common electrode 37 serving as the display surface side, 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 black particles 26 positively charged are the common electrode 37. The white particles 27 that have been moved (moved) to the side and are negatively charged are moved (moved) to the pixel electrode 35 side. As a result, looking at the common electrode 37 side, black is recognized in the pixel portion corresponding to the electrophoretic element 28. In this way, white or black is displayed for each pixel portion, and in the display device 5 in which these pixel portions are basically arranged in a matrix, pattern display made of white or black is enabled.

5 is a plan view schematically illustrating a configuration of a pixel of the display device 5.

In the display device 5, as shown in FIG. 5, in the display region 70 (see FIG. 7) other than the peripheral portion 71 (see FIG. 7) of the through hole 5A in plan view, as shown in FIG. 5. The portions 40 are arranged in a matrix in plan view. As shown in the circuit diagram of FIG. 6, each pixel portion 40 includes a latch circuit 46 formed by combining a transistor 41 as a switching element and four transistors 42, 43, 44, and 45. And an electrophoretic element 28. The pixel driving circuit 34 described above is configured in accordance with the transistor 41 and the latch circuit 46.

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

The latch circuit (flip-flop circuit) 46 is configured by, for example, combining two field effect type n channel transistors 42 and 44 and two field effect type p channel transistors 43 and 45. One of the source drains of the transistors 42 and 43 is connected to each other, the other source drain of the transistor 42 is connected to the low voltage power supply line 49, and the other source drain of the transistor 43 is connected. Is connected to the high voltage power supply line 50. Similarly, the transistors 44 and 45 are connected to one source drain thereof, the other source drain of the transistor 44 is connected to the low voltage power supply line 49, and the other source of the transistor 45 is connected. The drain is connected to the high voltage power supply line 50.

Each gate of the transistors 42 and 43 is connected to the connection point N1 between the source and drains of the transistors 44 and 45. This connection point N1 is supposed to function as an input terminal of the latch circuit 46. This input terminal N1 is connected to the other source drain (output terminal) of the transistor 41. Each gate of the transistors 44 and 45 is connected to the connection point N2 between the source and drains of the transistors 42 and 43. This 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 described above, that is, one electrode of the electrophoretic element 28. Under such a configuration, the latch circuit 46 shows a low potential VSS at the output terminal N2 when the potential applied to the input terminal N1 is high, and a high potential VEP at the output terminal N2 when the potential applied to the input terminal N1 is low. .

7 is a plan view illustrating 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 region 70, and the pixel electrodes 35 are not provided in the peripheral portion 71 of the through hole 5A. It is. In the peripheral portion 71 of the through hole 5A, a wiring or the like for transmitting various signals is provided.

FIG. 8 is a plan view illustrating a configuration of the peripheral portion 71 of the through hole 5A in the display device 5.

As shown in FIG. 8, 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 line 49 is the scanning line 47. Similarly, they extend in the row direction of the matrix and are arranged along the column direction. In this display area 70, the low voltage power supply line 49 and the scanning line 47 are alternately provided in the column direction (the arrangement direction of the low voltage power supply line 49 and the scanning line 47) of a matrix.

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

Peripheral part 71 of through-hole 5A is arrange | positioned so that it may pass by the part arrange | positioned at the position which passes through 5A of through-designs, ie, the part which formed this through-hole 5A, if there is no through-hole 5A. It is a part. In this portion, both the scanning line 47 and the data line 48 are provided with bypass wiring portions 47a and 48a which bypass the periphery of 5A and bypass the periphery thereof.

The sealing part 51 which sealed the periphery of the said through hole 5A is formed in the peripheral part 71 of the through hole 5A. The sealing portion 51 is an area in which the scanning line 47 and the data line 48 cannot pass. Therefore, 5 A of through-holes and the sealing part 51 are the avoiding part here. Among the scanning lines 47 and the data lines 48, the sealing portion is not only disposed at a position passing through the through hole 5A in design, but also disposed at a position passing through the sealing portion 51 in design. Bypass wiring portions 47a and 48a are provided to bypass 51 and bypass the circumference.

The bypass line portions 47a and 48a are also avoided in the scan line 47 and the data line 48 positioned near the scan line 47 and the data line 48 in which the bypass line portions 47a and 48a are formed. If necessary, a bypass wiring portion must also be formed. In such a scan line 47 and data line 48, bypass wiring portions 47a and 48a are similarly formed in this embodiment. In the present embodiment, in addition to the through holes 5A and the sealing portion 51, the bypass wiring portions 47a and 48a located in the vicinity of these are also the avoiding portions 52.

In the peripheral portion 71 of the through hole 5A, a low voltage connecting portion 59 connected to each low voltage power supply line 49 and a high voltage connecting portion 60 connected to each high voltage power supply line 50 are provided. The low voltage connecting portion 59 and the high voltage connecting 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, so as to surround the avoidance portion 52. The low voltage connecting portion 59 and the high voltage connecting portion 60 are provided outside the bypass wiring portion 47a and the bypass wiring portion 48a described above among the peripheral portions 71 of the through hole 5A. It is provided in the outermost periphery of the peripheral part 71 of 5A). In FIG. 8, the low voltage connection part 59 is provided in the outer side, and the high voltage connection part 60 is provided in the inside. Each low voltage power supply line 49 and each high voltage power supply line 50 avoids the avoiding unit 52 in a state of being integrated into one wiring unit by the low voltage connecting unit 59 and the high voltage connecting unit 60.

FIG. 9 is a diagram illustrating a configuration along an A-A cross section of FIG. 8. FIG. 10 is a diagram illustrating a configuration according to the section B-B in FIG. 7.

As shown in FIG. 9 and FIG. 10, the pixel drive circuit 34 is provided on the glass substrate 33. The pixel electrode 35 is provided in the upper layer of the pixel drive circuit 34, and is arranged in matrix form at the position which overlaps with the said pixel drive circuit 34 in plan view. The pixel electrode 35 and the pixel drive circuit 34 are electrically connected through the contact hole 61.

In addition, on the glass substrate 33, the scanning line 47, the low voltage connection part 59, and the high voltage connection part 60 are provided. On this scanning line 47, the low voltage connection part 59, and the high voltage connection part 60, the insulating layer 67 is provided so that these may be covered. The scanning line 47 is provided on the insulating layer 67 via the contact hole 62 at a portion where the scan line 47 intersects the low voltage connecting portion 59 and the high voltage connecting portion 60 in plan view. The data line 48 is provided on the insulating layer 67. The 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 connecting portion 59 and the high voltage connecting portion 60 avoid the scanning line 47 or the data line 48. And a layer on the insulating layer 67 (for example, the low voltage connecting portion 59a and the high voltage connecting portion 60a extending in the column direction in FIG. 8). In the region where the scanning line 47 or the data line 48 is provided in the layer on the insulating layer 67, the low voltage connecting portion 59 and the high voltage connecting portion 60 avoid the scanning line 47 or the data line 48. And a layer on the glass substrate 33 (for example, the low voltage connection part 59b and the high voltage connection part 60b extended inclining 45 degrees with respect to the column direction of FIG. 8). The contact plugs 59c and 60c are provided between the low voltage connecting portion 59a and the high voltage connecting portion 60a on the insulating layer 67 and the low voltage connecting portion 59b and the high voltage connecting portion 60b on the glass substrate 33. It is electrically connected.

In general, when driving pixels arranged in a matrix form, as shown in Fig. 11A, the power supply wiring 80 and the signal wiring 81 (scanning line and data line) are alternately arranged. The power supply wiring 80 and the signal wiring 81 are provided for each line on which pixels are arranged. Since both are arranged at a distance so as not to short-circuit each other, they are arranged to be wider in the line direction of the pixel. For this reason, there existed a problem that the display area became narrow by that much.

In contrast, according to the present embodiment, as shown in FIG. 11B, the peripheral portion 71 of the through hole 5A is connected to the pixel driving circuit 34 that drives the pixel electrode 35. Since the low voltage connecting portion 59 and the high voltage connecting portion 60 connected to the low voltage power supply line 49 and the high voltage power supply line 50 are provided so as to integrate the low voltage power supply line 49 and the high voltage power supply line 50. As a result, integrated space can save space in which a power line is provided. Since the space between the low voltage power supply line 49 and the high voltage power supply line 50 is saved to bypass the avoiding unit 52, it is possible to ensure a large display area.

(Example 2)

Next, Embodiment 2 of the present invention will be described. 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 a configuration substantially the same as that of the display device 5 of the first embodiment, but the outside of the avoidance part 152 other than the pixel electrodes 135 arranged in a matrix form. The first embodiment differs from the first embodiment in that the pixel electrode 135c extending from the side to the inside of the avoiding portion 152 is provided.

According to such a structure, since the pixel electrode 135c can be provided also in the avoidance part 152, the effect similar to Example 1 can be acquired and the effect that a display area can be enlarged is exhibited. .

(Example 3)

Next, Embodiment 3 of the present invention will be described. 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 a configuration substantially the same as that of the display device 5 of the first embodiment, but in addition to the pixel electrodes 235 arranged in a matrix, the ring 252 is covered to cover the avoidance part 252. This embodiment is different from the first embodiment in that the pixel electrode 235c having a shape is provided.

According to this structure, similarly to the second embodiment, since the pixel electrode 235c can be provided in the avoidance unit 252, the same effect as in the first embodiment can be obtained and the display area can be widened. It will become an effect to make.

(Example 4)

Next, Example 4 of the present invention will be described. 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 has a configuration in which the scan lines 347 are arranged at an angle (for example, at 45 °) without intersecting the scan lines 347 and the data lines 348. In the region where the pixel electrodes 335 are arranged in a matrix, the low voltage power supply line 349 is provided between the scan lines 347, and the scan line 347 and the low voltage power supply lines 349 are alternately arranged. . Similarly, in this area, the high voltage power supply line 350 is provided between the data lines 348, and the data line 348 and the high voltage power supply line 350 are alternately arranged. In the periphery of the through hole 305A and the sealing material 351 (avoiding portion 352), the low voltage power supply line 349 and the high voltage power supply line (349) are integrated so as to integrate the low voltage power supply line 349 and the high voltage power supply line 350. The connection part 359 connected to 350 is provided.

In the above configuration, the scanning line 347 is arranged at an angle, but the configuration may be such that the data line 348 is arranged at an angle. In addition, although the low voltage power supply line 349 and the high voltage power supply line 350 are connected to the common connection part 359 in the said structure, you may provide another connection part, respectively.

As described above, even when the arrangement of the scanning line 347 and the data line 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 to be integrated is provided. Therefore, the avoidance part 352 can be avoided, saving the space of the low voltage power supply line 349 and the high voltage power supply line 350. FIG. Thereby, the same effect as Example 1 can be acquired.

(Example 5)

Next, Example 5 of the present invention will be described.

In this embodiment, only a part of the avoiding part 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 the through hole 405A is formed at the center thereof, the scanning line 447 and the data line 448 are formed. The display area may be formed such that one half of the through hole 405A is positioned on the display area 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 part in the display area, as shown in FIG. 16, when the planar shape of the display device 505 is a regular octagon, and the through hole 505A is formed at the center thereof, A display area may be formed such that one quarter of the through hole 505A is positioned on the display area side where the scanning line 547 and the data line 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.

Thus, by applying the present invention to the configuration in which a part of the avoidance part is formed in the display area, even if the display area is a relatively narrow display device, it is possible to correspond the active matrix circuit board of the present invention. Therefore, in particular, application to a display device in which the display area is narrowed and power consumption is suppressed to lengthen the battery life is facilitated.

The technical scope of the present invention is not limited to the above embodiments, but modifications can be made as appropriate without departing from the spirit of the present invention.

In the said embodiment, although the planar shape of the low voltage connection part and the high voltage connection part is an octagonal ring shape, it is not limited to this. For example, as shown in FIG. 17, the shape of the low voltage connection part 659 and the high voltage connection part 660 may be formed in square ring shape.

In addition to the octagonal shape of the low voltage connecting portion and the high voltage connecting portion of the display device as shown in the above embodiment, as shown in FIG. 18, the planar shape of the low voltage connecting portion and the high voltage connecting portion of the display device 705 overlaps in a planar manner. It may comprise in rectangular shape so that it may form in another layer. Even in the case of the rectangular shape, the display area in the vicinity of the avoiding part such as the through hole 705A can be widened. In addition, the rectangular shape of the low voltage connection part and the high voltage connection part in different layers eliminates the need to electrically connect the low potential power line and the high potential power line to the other layer by using a contact plug in order to avoid scanning lines or data lines. Therefore, 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.

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

In the above embodiment, the electrophoretic dispersion liquid is used as the electro-optic material to display the electrophoretic device. However, for example, a liquid crystal material is used as the electro-optic material to configure the liquid crystal display device. The organic EL device may be constituted by using an organic EL material.

Moreover, although the example which showed the example which applied the display apparatus of this invention to the wrist watch was shown in the said embodiment, it can be applied to a table clock, a wall clock, a grandfather clock, a pocket watch, of course. In addition to the clock, the present invention can also be applied to various types of meters such as those having a guideline, and can also be applied to various display devices having avoidance parts other than through holes.

As an example of the display apparatus provided with the guide in the center of a display part, for example, as shown in FIG. 20, various meters, such as the speed meter 902 and the rotation meter 903, which are provided in the installation panel 901 of a motor vehicle Can be mentioned. In the centers of the speed meter 902 and the tachometer 903, the guidelines 904 and 905 are provided, respectively, and the display device is provided with holes 906 and 907 through which the guidelines 904 and 905 pass. Small meters, such as a fuel meter 908 and a water temperature meter 909, are provided on the side of the speed meter 902 and the rotation speed meter 903. These small meters are also provided with instructions 911 and 912, and the display device is provided with holes 913 and 914 through which the instructions 911 and 912 pass. When the display device of the above embodiment is applied to this kind of metering device, the metering device having a large display area can be realized. In particular, when an organic EL is used as the electro-optic material, in addition to ensuring a large display area, bright display by spontaneous emission can be obtained even at night.

1 is a front view of a wrist watch according to a display device of the present invention;

2 is a side cross-sectional view of a wrist watch,

3 is a side cross-sectional view of the display device;

4 is an operation explanatory diagram of an electrophoretic element;

5 is a diagram illustrating display regions other than the periphery of through holes of a display device;

6 is an equivalent circuit diagram of a pixel portion of a display device;

7 is a plan view illustrating a configuration of a display device;

8 is a plan view showing a configuration of a part of a display device;

9 illustrates a cross-sectional configuration of a first substrate of a display device;

10 illustrates a cross-sectional configuration of a first substrate of a display device;

11 is a view showing the effect by integrating wiring for a power line;

12 is a plan view showing the structure of a display device according to a second embodiment of the present invention;

13 is a plan view showing a configuration of a display device according to a third embodiment of the present invention;

14 is a plan view showing the configuration of a display device according to a fourth embodiment of the present invention;

15 is a plan view showing the structure of a display device according to a fifth embodiment of the present invention;

16 is the same top view,

17 is a plan view showing another configuration of the display device according to the present invention;

18 is a plan view showing another configuration of the display device according to the present invention;

19 is a plan view showing another configuration of the display device according to the present invention;

Fig. 20 is a plan view showing various meters of a vehicle having a display device according to the present invention.

Explanation of the sign

1: wrist watch 5: display device

5A: through hole 30: first substrate

31 second substrate 32 electrophoretic layer

33 glass substrate 34 pixel driving circuit

35 pixel electrode 35c pixel electrode

37 common electrode 40 pixel portion

47: scanning line 48: data line

49: low voltage power line 50: high voltage power line

51: sealing part 52: avoiding part

59: low voltage connection 60: high voltage connection

Claims (6)

A substrate provided with a avoiding portion in a predetermined region; 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 lines electrically connected to the driving circuit, the wirings having a bypass portion, a portion of which bypasses the avoiding portion; A connecting portion provided on a periphery of the avoiding portion on the substrate and connected to the power supply line so as to integrate a part of the plurality of power supply lines An active matrix circuit board comprising a. The method of claim 1, And said connection portion is provided on the outermost circumference of said avoiding portion of said bypass portions of said plurality of wirings. The method according to claim 1 or 2, And said connecting portion is connected to all of said plurality of power lines. The method of claim 1, And the connection portion is provided in a ring shape so as to surround the avoidance portion. A first substrate and a second substrate disposed to face each other and hold the electro-optic material layer therebetween; A pixel electrode provided on an opposite surface of the first substrate to the second substrate; Opposite electrodes provided on the opposing surface of the second substrate with the first substrate A display device comprising: The first substrate is an active matrix circuit board according to claim 1 Display device characterized in that. The method of claim 5, wherein And the electro-optic material layer comprises an electrophoretic dispersion comprising electrophoretic particles and a liquid dispersion medium for dispersing the electrophoretic particles.

Images