CN101266377A

CN101266377A - Active matrix circuit substrate and display device

Info

Publication number: CN101266377A
Application number: CNA2008100860695A
Authority: CN
Inventors: 下平泰裕
Original assignee: Seiko Epson Corp
Current assignee: Seiko Epson Corp
Priority date: 2007-03-15
Filing date: 2008-03-14
Publication date: 2008-09-17
Also published as: JP4281840B2; JP2008257191A; KR20080084676A

Abstract

The invention provides a display device driven by an active matrix that does not lead to display quality declining and product cost rising greatly, and ensures larger display area, the invention also provides an active matrix circuit substrate as a structure component. By using a method of a low voltage power line and high voltage power line being centralized on a pixel drive circuit of a drive pixel electrode in the periphery of a perforation hole, a low voltage connection part and a high voltage connection part that are connected with the low voltage power line and the high voltage power line respectively, thus, set space by the power line is centralized and saved. Because space of the low voltage power line and high voltage power line is saved in an avoidance portion, display area can increase saved amount.

Description

Active-matrix circuit board and display device

Technical field

The display device that the present invention relates to possess the active-matrix circuit board of drive electrode and wiring graph and possess this active-matrix circuit board.

Background technology

In recent years, be accompanied by popularizing of the various display device (display) that are made of electro-optical device, for the display part of clock and watch, various instrument etc., also described display device is used in research.As like this as the display device (display) of the display part of clock and watch, various instrument etc., for install for example be used for show on the clock and watch constantly or on instrument the pointer of display scale (numerical value), must form through hole.As the display device that has formed through hole, the stn liquid crystal that has proposed to drive with passive matrix is the liquid crystal indicator (for example with reference to patent documentation 1) of prerequisite.

Patent documentation 1: the spy opens the 2001-75112 communique

But, in employed display device (display) such as clock and watch, not only show expression numeral constantly etc., also carry out with " date ", " week " etc. calendar information and equipment such as clock and watch in the attached relevant demonstration of various functions (timer function, stop watch function, electric wave receiving function etc.), show so wish to drive by driven with active matrix rather than passive matrix.

Yet,, must set distributions such as data line, sweep trace in length and breadth in order to carry out driven with active matrix.When on the active-matrix circuit board as the structure member of display device as mentioned above, forming through hole, bring damage can for the data line, the sweep trace that are in this position of opening by drill bit etc.For example in the display device of using this active-matrix circuit board during, at the criss-cross position that comprises through hole, promptly connect in design, can not show by the display area of the pixel electrode on the distribution of described through hole as rectangular frame.Therefore, in having the matrix display body of through hole, go up the distribution that passes through described through hole,, must make this distribution part circuitous at this through hole in order to avoid this through hole for design.

In addition, in described patent documentation 1, put down in writing a kind of liquid crystal indicator is provided, this liquid crystal indicator is in order to merge the use analog gauges, in display part, has through hole, wherein: the axis that has formed respectively on the X of the periphery of this through hole electrode and Y electrode with through hole at distribution is the circular-arc electrode part of the regulation curvature at center, the peripheral space that can effectively utilize through hole thus carries out highdensity distribution, and can show especially at the periphery of through hole.Yet, in this patent documentation 1, there is not to consider the driven with active matrix of being undertaken by the TFT panel, therefore can not tackle the above-mentioned hope that shows by driven with active matrix wanted.

As mentioned above, in the high meticulous display device of active matrix mode, in order to avoid through hole, data line (signal wire), sweep trace distributions such as (sweep traces) are made a circulation at this through hole, but, can not on the formation position of this distribution, set the pixel-driving circuit that is used to drive pixel electrode for distribution being set circuitous at through hole.Particularly, if the display device of high-res, then the number of Yu Hui distribution becomes very many, and the zone that is used to form pixel-driving circuit is also more restricted.Its result can not show that at the periphery of through hole therefore whole display area diminishes.

Summary of the invention

The present invention In view of the foregoing finishes, and its purpose is to provide a kind of display device that can not make the driven with active matrix that has significantly risen, guaranteed bigger display area that display quality descends, can not cause in addition manufacturing cost and as the active-matrix circuit board of its structure member.

Active-matrix circuit board involved in the present invention is characterized in that, comprising: the substrate that is provided with avoidance portion in the zone of regulation; Be arranged on a plurality of pixel electrodes on the described substrate; Be arranged on the described substrate, drive the driving circuit of described a plurality of pixel electrodes; Be arranged on the described substrate, comprise a plurality of power leads of being connected electrically on the described driving circuit, have a plurality of distributions of a part at the circuitous circuity part of described avoidance portion; With the periphery that is arranged on the described avoidance portion on the described substrate, be connected connecting portion on this power lead in the mode that the part in described a plurality of power leads is concentrated.

According to the present invention, the periphery of the avoidance portion in a plurality of power leads on being connected the driving circuit that drives pixel electrode, on the substrate, space-saving that can power lead is set is provided with in the mode that the power lead of stated number is concentrated and is connected connecting portion on this power lead, so should be concentrated amount of economizing out.Because ground, the space of conserver power source line is circuitous in avoidance portion, has increased the amount of this saving so can guarantee display area.For " avoidance portion ", so comprise that through hole of for example being arranged on the substrate etc. physically can not dispose the zone of distribution, the generation electric short circuits such as zone that are provided with other distribution can not dispose zone of distribution etc.

Above-mentioned active-matrix circuit board is characterized in that: described connecting portion is set at most peripheral with respect to described avoidance portion in the described circuity part of described a plurality of distributions.

According to the present invention, connecting portion is set at most peripheral with respect to avoidance portion in the circuity part of a plurality of distributions, so power lead is concentrated.Thus, can practice every conceivable frugality and avoid the space of avoidance portion.

Above-mentioned active-matrix circuit board is characterized in that: described connecting portion is connected on described a plurality of power leads whole.

According to the present invention, connecting portion is connected on a plurality of power leads whole, so the space of configuration power lead can be saved corresponding amount significantly.

Above-mentioned active-matrix circuit board is characterized in that: described connecting portion is arranged to ring-type in the mode of surrounding described avoidance portion.

According to the present invention, connecting portion is arranged to ring-type in the mode of surrounding avoidance portion, thus power lead is concentrated, and can connect from any part on every side of avoidance portion.Thus, can easily avoid avoidance portion.

Display device involved in the present invention, this display device comprises: relatively the configuration, clamping electro-optical substance layer the 1st substrate and the 2nd substrate; Be arranged on the pixel electrode on the face relative in described the 1st substrate with described the 2nd substrate; Be arranged on described the 2nd substrate in comparative electrode on the face relative with described the 1st substrate; It is characterized in that described the 1st substrate is above-mentioned active-matrix circuit board.

According to the present invention, owing to be mounted with active-matrix circuit board, described active-matrix circuit board is circuitous in avoidance portion by the ground, space of saving distribution, can guarantee bigger display area, so can access the display device that can not make display quality descend, can not cause in addition the driven with active matrix that has significantly risen, guaranteed bigger display area of manufacturing cost.

Above-mentioned display device is characterized in that: described electro-optical substance layer comprises the electrophoresis dispersion that is made of electrophoretic particles and the liquid phase dispersion medium that this electrophoretic particles is disperseed.

According to the present invention,,, show the state that applies electric field before also can keeping even the electric field that imposes on electrophoretic particles is disappeared owing to constitute the retentivity (storage) that the electrophoresis element of display device has demonstration.Therefore, can reduce consumption electric power.

Description of drawings

Fig. 1 is the front elevation of the related wrist-watch of display device of the present invention.

Fig. 2 is the sectional side view of wrist-watch.

Fig. 3 is the sectional side view of display device.

Fig. 4 is the action specification figure of electrophoresis element.

Fig. 5 is the figure of the viewing area beyond the periphery of through hole of expression display device.

Fig. 6 is the equivalent circuit figure of the pixel portions of display device.

Fig. 7 is the vertical view of the structure of expression display device.

Fig. 8 is the vertical view of structure of the part of expression display device.

Fig. 9 is the figure of cross-section structure of the 1st substrate of expression display device.

Figure 10 is the figure of cross-section structure of the 1st substrate of expression display device.

Figure 11 is that distribution that power lead is used in expression puts together and the figure of the effect that produces.

Figure 12 is the vertical view of the structure of the related display device of expression the 2nd embodiment of the present invention.

Figure 13 is the vertical view of the structure of the related display device of expression the 3rd embodiment of the present invention.

Figure 14 is the vertical view of the structure of the related display device of expression the 4th embodiment of the present invention.

Figure 15 is the vertical view of the structure of the related display device of expression the 5th embodiment of the present invention.

Figure 16 also is the vertical view of the structure of the related display device of expression the 5th embodiment of the present invention.

Figure 17 is other the vertical view of structure of expression display device involved in the present invention.

Figure 18 is other the vertical view of structure of expression display device involved in the present invention.

Figure 19 is other the vertical view of structure of expression display device involved in the present invention.

Figure 20 is the vertical view of various meters that expression possesses the automobile of display device involved in the present invention.

Symbol description

1: wrist-watch

5: display device

5A: through hole

30: the 1 substrates

31: the 2 substrates

32: electrophoretic layer

33: glass substrate

34: pixel-driving circuit

35: pixel electrode

35c: pixel electrode

37: common electrode

40: pixel portions

47: sweep trace

48: data line

49: the low-tension supply line

50: high-voltage power-line

51: sealing

52: avoidance portion

59: the low pressure connecting portion

60: the high pressure connecting portion

Embodiment

[the 1st embodiment]

Below, based on description of drawings the 1st embodiment of the present invention.

Fig. 1 is the front elevation that possesses the wrist-watch 1 of the related display device of present embodiment.

As shown in the drawing, wrist-watch 1 is that main body constitutes with watchcase 2 with a pair of watchband 3 that is connected on this watchcase 2.

Watchcase 2 is made of resins such as metals such as stainless steel or plastic resins.In the front of watchcase 2, be provided with display device 5, second hand 21, minute hand 22, hour hands 23.On the side of watchcase 2, be provided with tap 10 and action button 11 as operating portion.Tap 10 is connected on the clockwork spring (not shown) that is arranged on enclosure, and be configured to form one with this clockwork spring and a plurality of sections (for example 2 sections) go up push-and-pull freely and rotation freely.

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

As shown in the drawing, be provided with incorporating section 2A in the inside of watchcase 2.In the 2A of incorporating section, movement 4 and display device 5 have been taken in.

Movement 4 has the mechanism that handles the needle (not shown) that is connected with the simulated pointer that comprises second hand 21, minute hand 22 and hour hands 23.This mechanism that handles the needle is rotated driving to described simulated pointer 21～23, thus as the moment display part in moment of display setting and work.

Display device 5 is made of the electrophoretic display apparatus of for example driven with active matrix, is configured in the wrist-watch face side of movement 4.This display device 5 constitutes the display part of wrist-watch 1.The display surface of display device 5 here is a toroidal.For the shape of display surface,, also can form other shape of for example octagon, ten hexagons etc. except toroidal.

At the central portion of display device 5, be formed with the inside and outside through hole 5A that connects this display device 5.In through hole 5A, the second hand wheel the 24, the 2nd that is inserted with the mechanism that handles the needle (not shown) of described movement 4 take turns 25 and tubular wheel 26 etc. each.At the front end of each, be separately installed with above-mentioned second hand 21, minute hand 22 and hour hands 23.

One distolateral (wrist-watch face side) at incorporating section 2A is provided with glass or resinous transparency cover 7.This transparency cover 7 is pressed into and is fixed on the 2A of incorporating section via resin system or the metal circle 6 that is pressed into.At another distolateral (wrist-watch dorsal part) of incorporating section 2A, screwed togather the back of the body via seal 8 and covered 9.By the back of the body cover 9 and transparency cover 7 guarantee the sealing of the inside of watchcase 2.

Fig. 3 is a cut-open view of diagrammatically representing the structure of display device 5.

As shown in the drawing, display device 5 is that main body constitutes with the 1st substrate (active-matrix circuit board) the 30, the 2nd substrate 31 and electrophoretic layer 32.

The 1st substrate 30 and the 2nd substrate 31 dispose relatively in the mode of clamping electrophoretic layer 32.On the inner face (face relative) of the 1st substrate 30, be formed with pixel electrode 35 (with reference to Fig. 7 etc.) with the 2nd substrate.On the inner face of the 2nd substrate 31 (face relative), be formed with the common electrode (comparative electrode) 37 that constitutes by transparent conductive materials such as ITO with the 1st substrate 30.The outside of the 2nd substrate 31 becomes the display surface of images such as showing still frame, animation.In the central authorities of the 1st substrate 30 and the 2nd substrate 31, be formed with above-mentioned through hole 5A.Through hole 5A forms the zone of overlooking coincidence that connects the 1st substrate 30 and the 2nd substrate 31.On the medial surface of through hole 5A, be provided with sealing 51.Sealing 51 is configured to seal the zone (being provided with the zone of electrophoretic layer 32) between the 1st substrate 30 and the 2nd substrate 31.

Electrophoretic layer 32 is that main body constitutes with a plurality of micro-pixels 24 shown in Fig. 4 (a) and Fig. 4 (b).In each micro-pixels 24, enclosing respectively has electrophoresis dispersion (electro-optical substance) 25.The structure of electrophoresis dispersion 25 is, is dispersed with the electrophoretic particles (below note make black particle) 26 of the black of a plurality of positively chargeds and the electrophoretic particles of electronegative white (below note make white particle) 27 in liquid phase dispersion medium (not shown) respectively.For electrophoresis dispersion 25, not only be defined in the type of described 2 kinds of particles, also can use the type of a kind of particle.At this moment, can use painted type afterwards for liquid phase dispersion medium.In any one of 2 kinds of grain types, a kind of grain type,, also can adopt the shades of colour beyond white and black for the color of particle.

Action to this electrophoresis element 28 describes.Shown in Fig. 4 (a), when the current potential of common electrode 37 was more higher relatively than the current potential of pixel electrode 35, electronegative white particle 27 was to common electrode 37 side shiftings (migration), and the black particle 26 of positively charged is to pixel electrode 35 side shiftings (migration).Its result, when observing as common electrode 37 sides of display surface side, with the visible white of electrophoresis element 28 corresponding pixel portions.

On the other hand, shown in Fig. 4 (b), when the current potential of pixel electrode 35 was more higher relatively than the current potential of common electrode 37, the black particle 26 of positively charged was to common electrode 37 side shiftings (migration), and electronegative white particle 27 is to pixel electrode 35 side shiftings (migration).Its result, when common electrode 37 sides are observed, with these electrophoresis element 28 corresponding pixel portions visible black color.Like this, at each pixel portions display white or black, these pixel portions can be configured to basically show the figure that constitutes by white or black on the rectangular display device 5 thus.

Fig. 5 is the vertical view of structure of the pixel of model utility ground expression display device 5.

In this display device 5, the periphery 71 (with reference to Fig. 7) of the through hole 5A on overlooking viewing area 70 (with reference to Fig. 7) in addition becomes to overlook pixel portions 40 assortments rectangular as shown in Figure 5.Each pixel portions 40 comprises shown in the circuit diagram of Fig. 6: as the transistor 41 of on-off element, and latch circuit 46 and electrophoresis element 28 that 4

transistors

42,43,44,45 are combined and constitute.Constitute above-mentioned pixel-driving circuit 34 by transistor 41 and latch circuit 46.

Transistor 41 is the n channel transistor of for example field effect type, its grid is connected on the sweep trace (sweep trace) 47, one side's source drain (input end) is connected on the data line (signal wire) 48, and the opposing party's source drain (output terminal) is connected on the input end of latch circuit 46.

Latch circuit (flop-over circuit) 46 is with p channel transistor 43,45 combinations of 42,44 and 2 field effect types of n channel transistor of for example 2 field effect types and

constitute.Transistor

42,43 source drains with a side are connected to each other, and the opposing party's of transistor 42 source drain is connected on the low-tension supply line 49, and the opposing party's of transistor 43 source drain is connected on the high-voltage power-line 50.Equally, transistor 44,45 source drains with a side are connected to each other, and the opposing party's of transistor 44 source drain is connected on the low-tension supply line 49, and the opposing party's of transistor 45 source drain is connected on the high-voltage power-line 50.

The grid separately of

transistor

42,43 is connected on the source drain tie point N1 each other of transistor 44,45.This tie point N1 is as the input end of latch circuit 46 and work.This input end N1 is connected on the opposing party's of described transistor 41 the source drain (output terminal).The grid separately of transistor 44,45 is connected on the source drain tie point N2 each other of transistor 42,43.This tie point N2 is as the output terminal of latch circuit 46 and work.The output terminal N2 of this latch circuit 46 is connected described pixel electrode 35, is on the electrode of side's side of electrophoresis element 28.Based on such structure, latch circuit 46 electronegative potential VSS occurs at output terminal N2 when the current potential that imposes on input end N1 is noble potential, noble potential VEP occurs at output terminal N2 when the current potential that imposes on input end N1 is electronegative potential.

Fig. 7 is the vertical view of the schematic configuration of expression display device 5.As shown in Figure 7, its structure is: in the viewing area 70, pixel electrode 35 is aligned to rectangular, at the periphery 71 of through hole 5A, forms pixel electrode 35 is not set.At the periphery 71 of through hole 5A, be provided with the distribution of the various signals of transmission etc.

Fig. 8 is the vertical view of structure of the periphery 71 of the through hole 5A of expression in the display device 5.

As shown in the drawing, in the viewing area 70, sweep trace 47 prolongs on the line direction of this matrix and arranges along column direction, and low-tension supply line 49 is identical with this sweep trace 47, prolongation and arrange along column direction on the line direction of matrix.In this viewing area 70, low-tension supply line 49 alternately is provided with on matrix column direction (orientation of low-tension supply line 49 and sweep trace 47) with sweep trace 47.

In addition, in the viewing area 70, data line 48 prolongs on the matrix column direction and arranges along line direction, and high-voltage power-line 50 is identical with data line 48, prolongs on the matrix column direction in this zone and arranges along line direction.In the viewing area 70, high-voltage power-line 50 and data line 48 alternately are provided with on the matrix column direction orientation of data line 48 (high-voltage power-line 50 with).

The periphery 71 of through hole 5A is the parts that are configured in design by the position of through hole 5A, if promptly be configured to not have through hole 5A then the part at position by forming this through hole 5A.In this part, on sweep trace 47 and data line 48, be respectively equipped with the circuitous wiring part 47a and the 48a that avoid through hole 5A and around it, make a circulation.

At the periphery 71 of through hole 5A, be formed with the sealing 51 on every side of this through hole of sealing 5A.The zone of sealing 51 for sweep trace 47 and data line 48 are passed through.Therefore,, through hole 5A and sealing 51 are made as avoidance portion here.In sweep trace 47 and data line 48, not only be configured in design by on the line of through hole 5A, and be configured in design by on the line of sealing 51, also be provided with avoid sealing portion 51 and around it circuitous

circuitous wiring part

47a and 48a.

Be formed with circuitous wiring part 47a and the sweep trace 47 of 48a and near the sweep trace 47 and the data line 48 of data line 48 for being positioned at,, also must form circuitous wiring part in order to avoid this circuitous wiring part 47a and 48a.For such sweep trace 47 and data line 48, also identical with present embodiment, be formed with

circuitous wiring part

47a, 48a respectively.In the present embodiment, not only at through hole 5A and sealing 51, the circuitous wiring part 47a and the 48a that are positioned near them also become avoidance portion 52.

In addition, at the periphery 71 of through hole 5A, be provided with low pressure connecting portion 59 that is connected on each low-tension supply line 49 and the high pressure connecting portion 60 that is connected on each high-voltage power-line 50.Low pressure connecting portion 59 and high pressure connecting portion 60 are made of conductive materials such as metal, ITO, are configured to overlook ring-type in the mode of surrounding avoidance portion 52, for example the ring-type of octagon.Low pressure connecting portion 59 and high pressure connecting portion 60 are set at the circuitous wiring part 47a above-mentioned in the periphery 71 of through hole 5A and the outside of circuitous wiring part 48a, are set at the most peripheral of the periphery 71 of this through hole 5A.In Fig. 8, low pressure connecting portion 59 is arranged on the outside, and high pressure connecting portion 60 is arranged on the inboard.Each low-tension supply line 49 and each high-voltage power-line 50 are avoided avoidance portion 52 with the state that concentrates on the wiring part of each by low pressure connecting portion 59 and high pressure connecting portion 60.

Fig. 9 is the figure of the structure cut open along the A-A line of Fig. 8 of expression.Figure 10 is the figure of the structure cut open along the B-B line of Fig. 8 of expression.

As Fig. 9 and shown in Figure 10, on glass substrate 33, be provided with pixel-driving circuit 34.Pixel electrode 35 is set at the upper strata of pixel-driving circuit 34, becomes rectangular overlooking the positional alignment that overlaps with this pixel-driving circuit 34.Pixel electrode 35 and pixel-driving circuit 34 are electrically connected via contact hole 61.

In addition, on glass substrate 33, be provided with sweep trace 47, low pressure connecting portion 59 and high pressure connecting portion 60.On this sweep trace 47, low pressure connecting portion 59 and high pressure connecting portion 60, be provided with insulation course 67 in the mode that is covered with these several parts.Sweep trace 47 overlooking the part of intersecting with above-mentioned low pressure connecting portion 59 and high pressure connecting portion 60, is arranged on the insulation course 67 via for example contact hole 62.On insulation course 67, be provided with data line 48.On data line 48, be provided with insulation course 68 in the mode that covers this data line 48.On insulation course 68, be provided with described pixel electrode 35.

In the zone that sweep trace 47 or data line 48 is arranged on one deck on the glass substrate 33, low pressure connecting portion 59 and high pressure connecting portion 60 are arranged on one deck on the insulation course 67 (low pressure connecting portion 59a that for example prolongs and high pressure connecting portion 60a) to avoid the mode of this sweep trace 47 or data line 48 on the column direction of Fig. 8.In the zone that sweep trace 47 or data line 48 is arranged on one deck on the insulation course 67, low pressure connecting portion 59 and high pressure connecting portion 60 to be to avoid the mode of this sweep trace 47 or data line 48, is arranged on one deck on the glass substrate 33 (for example with respect to the column direction of Fig. 8 tilt 45 ° of low pressure connecting portion 59b and high pressure connecting portion 60b that ground prolongs).Between low pressure connecting portion 59b on low pressure connecting portion 59a on the insulation course 67 and high pressure connecting portion 60a and the glass substrate 33 and the high pressure connecting portion 60b, be electrically connected by

contact plug

59c, 60c.

Usually, when driving is arranged in rectangular pixel, shown in Figure 11 (a), power supply is alternately arranged with distribution 81 (sweep trace, data line) with distribution 80 and signal.Power supply is arranged on the every line that pixel arranges with distribution 81 with distribution 80 and signal.Both are provided with distance ground and arrange for not short circuit mutually, thus on the line direction of pixel, dispose broad.Therefore, has the problem that corresponding amount has been reduced in the viewing area.

Relative therewith, according to present embodiment, shown in Figure 11 (b), periphery 71 at through hole 5A, will be connected the mode that low-tension supply line 49 on the pixel-driving circuit 34 that drives pixel electrode 35 and high-voltage power-line 50 are concentrated, setting is connected to low pressure connecting portion 59 and the high pressure connecting portion 60 on this low-tension supply line 49 and the high-voltage power-line 50, economizes the amount of coming out so space-saving that can power lead is set should be concentrated.Because it is circuitous in avoidance portion 52 to save the ground, space of low-tension supply line 49 and high-voltage power-line 50, so display area can increase the amount of this saving.

[the 2nd embodiment]

Next, the 2nd embodiment of the present invention is described.Figure 12 is the vertical view of the structure of the related display device 105 of expression present embodiment.

In the present embodiment, display device 105 has the structure roughly the same with the display device 5 of the 1st embodiment, but it is different with the 1st embodiment more below, that is: except being configured to rectangular pixel electrode 135, also be provided with the 152 interior pixel electrode 135c that prolong of lateral avoidance portion from avoidance portion 152.

According to such mechanism, in avoidance portion 152, also pixel electrode 135c can be set, thus not only can access the effect identical with the 1st embodiment, and play the effect that can enlarge the viewing area.

[the 3rd embodiment]

Next, the 3rd embodiment of the present invention is described.Figure 13 is the vertical view of the structure of the related display device 205 of expression present embodiment.

In the present embodiment, display device 205 has the structure roughly the same with the display device 5 of the 1st embodiment, but it is different with the 1st embodiment more below, that is: except being configured to rectangular pixel electrode 235, also be provided with the pixel electrode 235c of ring-type in the mode that covers avoidance portion 252.

According to such mechanism, identical with the 2nd embodiment, in avoidance portion 252, also pixel electrode 235c can be set, thus not only can access the effect identical with the 1st embodiment, and play the effect that can enlarge the viewing area.

[the 4th embodiment]

Next, the 4th embodiment of the present invention is described.Figure 14 is the vertical view of the structure of the related display device 305 of expression present embodiment.

The structure of the display device 305 that present embodiment is related is: do not make sweep trace 347 vertical with data line 348, and with sweep trace 347 inclination (for example tilting 45 °) configurations.Pixel electrode 335 is being arranged in rectangular zone, between sweep trace 347, is being provided with low-tension supply line 349, sweep trace 347 and low-tension supply line 349 are alternately being arranged.Equally,, between data line 348, be provided with high-voltage power-line 350, data line 348 and high-voltage power-line 350 are alternately arranged in this zone.Around through hole 305A and sealing 351 (avoidance portion 352), the mode so that low-tension supply line 349 and high-voltage power-line 350 concentrated is provided with the connecting portion 359 that is connected on this low-tension supply line 349 and the high-voltage power-line 350.

In addition, in said structure, with sweep trace 347 tilted configuration, but also can be with data line 348 tilted configuration.In addition, in said structure, low-tension supply line 349 and high-voltage power-line 350 are connected on the public connecting portion 359, but also can be separately positioned on the different connecting portions.

Like this, even when changing the configuration of sweep trace 347 and data line 348 with respect to the 1st embodiment, owing to be provided with the connecting portion 359 that is connected in the mode that low-tension supply line 349 and high-voltage power-line 350 are concentrated, can in the space of saving low-tension supply line 349 and high-voltage power-line 350, avoid avoidance portion 352.Thus, can access the effect identical with the 1st embodiment.

[the 5th embodiment]

Next, the 5th embodiment of the present invention is described.

In the present embodiment, structure is: only the part with avoidance portion is formed in the viewing area of display device.

Specifically, also can be as shown in figure 15, be octagon at the plan view shape of display device 405, and when being formed centrally through hole 405A therein, so that half of through hole 405A is positioned at the viewing area side that is provided with sweep trace 447 and data line 448, the mode that makes remaining half be positioned at the non-display area side forms the viewing area.In addition, in Figure 15, symbol 463 is gate drivers, and symbol 464 is data drivers.

Be formed on other example in the viewing area as a part with avoidance portion, also can be as shown in figure 16, be octagon at the plan view shape of display device 505, and when being formed centrally through hole 505A therein so that through hole 505A 1/4 be positioned at the viewing area side that is provided with sweep trace 547 and data line 548, the mode that makes remaining part be positioned at the non-display area side forms the viewing area.In addition, in Figure 16, symbol 563 is gate drivers, and symbol 564 is data drivers.

Like this, be formed on structure in the viewing area by the present invention being applied in a part with avoidance portion, even the narrow display device in viewing area also can make active-matrix circuit board of the present invention corresponding with it.Therefore, be applied to easily particularly by dwindling the viewing area, suppressing to consume the display device that electric power extends the life of a cell.

Technical scope of the present invention is not limited to above-mentioned embodiment, can suitably apply change in the scope that does not break away from purport of the present invention.

In the above-described embodiment, the plan view shape of low pressure connecting portion and high pressure connecting portion is octagonal ring-type, but is not limited thereto.For example also can be as shown in figure 17, the shape of low pressure connecting portion 659 and high pressure connecting portion 660 is formed foursquare ring-type.

In addition, be not limited only to as above-mentioned embodiment, the low pressure connecting portion of display device and the plan view shape of high pressure connecting portion should be octagon, also can be as shown in figure 18, the plan view shape of the low pressure connecting portion of display device 705 and high pressure connecting portion is constituted rectangular-shaped to overlook the mode that overlaps, on different layers, form.For also enlarging near the viewing area the avoidance portion such as through hole 705A under the rectangular-shaped situation.In addition, by on different layer forming rectangular-shaped with the high pressure connecting portion low pressure connecting portion, needn't low-tension supply line and high-voltage power-line be electrically connected by contact plug at different layers in order to avoid sweep trace, data line, so needn't form contact plug.In addition, in Figure 18, symbol 761 is gate drivers, and symbol 762 is source electrode drivers.

In addition, as the example of special shape, also can be as shown in figure 19, the plan view shape of display device 805 is constituted heart shape.Under these circumstances, same as described above, can enlarge near the viewing areas of avoidance portion such as through hole 805A.In addition, in Figure 19, symbol 861 is gate drivers, and symbol 862 is source electrode drivers.

In addition, use electrophoresis dispersion in the above-described embodiment, show by constituting the electrophoresis element as electro-optical device, but for example also can use liquid crystal material as electro-optical device, constitute liquid crystal display cells thus, also can use organic EL in addition, constitute organic EL thus.

In addition, in the above-described embodiment, represented the example of display device applications of the present invention, but can certainly be applied to desk clock, wall clock, post clock, pocket-watch etc. in wrist-watch.Except clock and watch, can be applied to have the various instrument of pointer etc., and then also can be applied to have the various display device of the avoidance portion beyond the through hole.

The example that has the display device of pointer as the central authorities at display part as shown in figure 20, can be enumerated the various meters such as the velometer that panel board 901 possessed 902, tachometer gage 903 of automobile.Central authorities at velometer 902, tachometer gage 903 possess pointer 904,905 respectively, are provided with to insert the hole 906,907 that is connected with pointer 904,905 on display device.Possesses for example little table such as fuel meter 908, water thermometer 909 on the next door of velometer 902, tachometer gage 903.On these little tables, also possess pointer 911,912, on display device, be provided with and insert the hole 913,914 that is connected with pointer 911,912.If on this meters, use the display device of above-mentioned embodiment, then can realize having the meters of big display area.Particularly when using organic EL, not only can guarantee bigger display area, and also can obtain the brighter demonstration that produces owing to autoluminescence at night as electro-optical device.

Claims

1. an active-matrix circuit board is characterized in that, comprising:

Be provided with the substrate of avoidance portion in the zone of regulation;

Be arranged on a plurality of pixel electrodes on the described substrate;

Be arranged on the described substrate, drive the driving circuit of described a plurality of pixel electrodes;

Be arranged on the described substrate, comprise a plurality of power leads of being connected electrically on the described driving circuit, have a plurality of distributions of a part at the circuitous circuity part of described avoidance portion; With

Be arranged on the described avoidance portion on the described substrate periphery, be connected connecting portion on this power lead in the mode that the part in described a plurality of power leads is concentrated.

2. active-matrix circuit board as claimed in claim 1 is characterized in that: described connecting portion is set at most peripheral with respect to described avoidance portion in the described circuity part of described a plurality of distributions.

3. active-matrix circuit board as claimed in claim 1 or 2 is characterized in that: described connecting portion is connected on described a plurality of power leads whole.

4. as any described active-matrix circuit board in the claim 1～3, it is characterized in that: described connecting portion is arranged to ring-type in the mode of surrounding described avoidance portion.

5. display device, this display device comprises:

Relatively the configuration, clamping electro-optical substance layer the 1st substrate and the 2nd substrate;

Be arranged on the pixel electrode on the face relative in described the 1st substrate with described the 2nd substrate; With

Be arranged on the comparative electrode on the face relative in described the 2nd substrate with described the 1st substrate;

It is characterized in that described the 1st substrate is any described active-matrix circuit board in the claim 1～4.

6. display device as claimed in claim 5 is characterized in that: described electro-optical substance layer comprises the electrophoresis dispersion that is made of electrophoretic particles and the liquid phase dispersion medium that this electrophoretic particles is disperseed.