Source: https://patents.google.com/patent/CN104934440B/en
Timestamp: 2020-01-28 11:27:45
Document Index: 492566391

Matched Legal Cases: ['art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 66', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 2', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6', 'art 6']

CN104934440B - Array base palte and preparation method thereof, display device - Google Patents
CN104934440B
CN104934440B CN201510209605.6A CN201510209605A CN104934440B CN 104934440 B CN104934440 B CN 104934440B CN 201510209605 A CN201510209605 A CN 201510209605A CN 104934440 B CN104934440 B CN 104934440B
CN201510209605.6A
CN104934440A (en
2015-04-28 Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
2015-04-28 Priority to CN201510209605.6A priority Critical patent/CN104934440B/en
2015-09-23 Publication of CN104934440A publication Critical patent/CN104934440A/en
2017-12-08 Publication of CN104934440B publication Critical patent/CN104934440B/en
The invention provides a kind of array base palte and preparation method thereof, display device, it is related to display technology field, to prevent from producing ESD event in array base palte production process.The array base palte includes grid connecting portion, source and drain connecting portion and bridge part, wherein the bridge part includes：The first electrode electrically connected with grid connecting portion；The second electrode electrically connected with source and drain connecting portion；Connection electrode, its one end electrically connect with first electrode, and the other end electrically connects with second electrode；Using perpendicular to the underlay substrate and successively face Jing Guo first electrode, connection electrode and second electrode as the plane of reference, connection electrode is less than first electrode perpendicular to underlay substrate and perpendicular to the area of section of the plane of reference perpendicular to underlay substrate and perpendicular to the area of section of the plane of reference, again smaller than second electrode perpendicular to underlay substrate and perpendicular to the area of section of the plane of reference.Array base palte provided by the present invention is used to form display device.
Array base palte is the important component of display device, and array base palte mainly includes：Underlay substrate, gate electrode layer, First insulating barrier, active layer, source-drain electrode layer, the second insulating barrier and transparency conducting layer.Wherein, the figure in gate electrode layer can wrap Include grid and gate line, the figure in source-drain electrode layer may include source electrode, drain electrode and data wire, and the figure in transparency conducting layer can Including pixel electrode.
, it is necessary to which the figure in the figure in gate electrode layer and source-drain electrode layer is electrically connected on many regions of array base palte Pick up and, such as：Electrically connect different TFT (Thin in GOA (Gate Driver on Array, the driving of array base palte row) unit Film Transistor, thin film transistor (TFT)) grid and source electrode (or grid and drain electrode), electrically connect GOA unit in TFT leakage Pole and grid line, electrically connect different TFT grid and source electrode (or grid and drain electrode), etc. in static release circuit.Such as Fig. 1 a and Shown in Fig. 1 b, the structure of the figure electrical connection in the figure and source-drain electrode layer in gate electrode layer is：Gate electrode layer also includes grid Connecting portion 2, the grid connecting portion 2 are connected with figure to be electrically connected in gate electrode layer；Source-drain electrode layer also includes source and drain connecting portion 4, the source and drain connecting portion 4 is connected with figure to be electrically connected in source-drain electrode layer；Transparency conducting layer also includes bridge part 6, the bridge The one end of socket part 6 connects grid connecting portion 2 by via, and the other end connects source and drain connecting portion 4 by via.
But electrostatic is easily produced during the second insulating barrier 5 is deposited, electrostatic charge can be under the second insulating barrier 5 Assemble on the source and drain connecting portion 4 of side, make to produce electrical potential difference between source and drain connecting portion 4 and grid connecting portion 2.Because electric connection grid connects The resistance of the bridge part 6 of portion 2 and source and drain connecting portion 4 is relatively low, therefore electrostatic charge flows faster, causes in grid connecting portion 2 and source Leak the mutually close end (as shown in dotted line circle in Fig. 1) of connecting portion 4 produce ESD (Electro Static Discharge, it is quiet Electricity release) phenomenon.
For overcome it is above-mentioned in the prior art the defects of, the present invention provides a kind of array base palte and preparation method thereof, display dress Put, to prevent from producing ESD event in array base palte production process.
The first aspect of the present invention provides a kind of array base palte, including：Underlay substrate, and stack gradually in the substrate Gate electrode layer, the first insulating barrier, source-drain electrode layer, the second insulating barrier and transparency conducting layer on substrate, the gate electrode layer bag Grid connecting portion is included, the source-drain electrode layer includes source and drain connecting portion, and the transparency conducting layer includes bridge part, the bridge part bag Include：The first electrode electrically connected with the grid connecting portion；The second electrode electrically connected with the source and drain connecting portion；Connection electrode, One end of the connection electrode electrically connects with the first electrode, and the other end electrically connects with the second electrode；With perpendicular to institute State underlay substrate and the face by the first electrode, the connection electrode and the second electrode is the plane of reference successively, it is described Connection electrode perpendicular to the underlay substrate and perpendicular to the plane of reference area of section be less than the first electrode perpendicular to The underlay substrate and perpendicular to the area of section of the plane of reference, the connection electrode is perpendicular to the underlay substrate and vertical It is less than the second electrode perpendicular to the underlay substrate and perpendicular to the plane of reference in the area of section of the plane of reference Area of section.
Optionally, the array base palte also includes：Through first insulating barrier and second insulating barrier and it is located at institute The first via above grid connecting portion is stated, the first electrode is electrically connected by first via with the grid connecting portion；Pass through Wear second insulating barrier and the second via above the source and drain connecting portion, the second electrode pass through second mistake Hole electrically connects with the source and drain connecting portion.
Optionally, the source-drain electrode layer also includes：Source-drain electrode layer pattern to be connected, the source and drain electricity to be connected Pole layer pattern includes source electrode, drain electrode and data wire；Second via is located above the source-drain electrode layer pattern to be connected, The source and drain connecting portion is positioned at second via and its peripheral region lower section in the source-drain electrode layer pattern to be connected Part.
Optionally, the gate electrode layer also includes：Gate electrode layer figure to be connected, the gate electrode layer figure to be connected Shape includes grid and gate line；First via is above the gate electrode layer figure to be connected, the grid connecting portion To be located at the part below first via and its peripheral region in the gate electrode layer figure to be connected.
Optionally, on the plane parallel to the underlay substrate, using the direction parallel to the plane of reference as first party To so that perpendicular to the direction of the plane of reference, as second direction, size of the connection electrode along the first direction is 50 μm ~10000 μm, the size along the second direction is 1 μm~6 μm.
Optionally, the array base palte also includes：Cover the 3rd insulating barrier of the transparency conducting layer；Through the described 3rd Insulating barrier and the 3rd via above the first electrode；Through the 3rd insulating barrier and in the second electrode 4th via of side；Compensating electrode on the 3rd insulating barrier, one end of the compensating electrode pass through the 3rd mistake Hole is electrically connected with the first electrode, and the other end is electrically connected by the 4th via with the second electrode.
The second aspect of the present invention provides a kind of preparation method of array base palte, including：The layer successively on underlay substrate Folded to form gate electrode layer, the first insulating barrier, source-drain electrode layer and the second insulating barrier, the gate electrode layer includes grid connecting portion, institute Stating source-drain electrode layer includes source and drain connecting portion, and the preparation method also includes：Electrically conducting transparent is formed on second insulating barrier Layer, the transparency conducting layer include bridge part, and the bridge part includes：The first electrode electrically connected with the grid connecting portion；With The second electrode of the source and drain connecting portion electrical connection；Connection electrode, one end of the connection electrode are electrically connected with the first electrode Connect, the other end electrically connects with the second electrode；With perpendicular to the underlay substrate and successively by the first electrode, described The face of connection electrode and the second electrode is the plane of reference, and the connection electrode is perpendicular to the underlay substrate and perpendicular to described The area of section of the plane of reference is less than the first electrode perpendicular to the underlay substrate and perpendicular to the section face of the plane of reference Product, the connection electrode are less than the second electrode perpendicular to the underlay substrate and perpendicular to the area of section of the plane of reference Perpendicular to the underlay substrate and perpendicular to the area of section of the plane of reference.
Optionally, after second insulating barrier is formed, and before the transparency conducting layer is formed, the making side Method also includes：The first via and the second via are formed, first via is through first insulating barrier and second insulation Layer, and above the grid connecting portion, so that the first electrode is electrically connected by first via and the grid connecting portion Connecing, second via runs through second insulating barrier, and above the source and drain connecting portion, so that the second electrode is led to Second via is crossed to electrically connect with the source and drain connecting portion.
Optionally, the source-drain electrode layer also includes：Source-drain electrode layer pattern to be connected, the source and drain electricity to be connected Pole layer pattern includes source electrode, drain electrode and data wire；Forming second via is specially：In the source-drain electrode layer to be connected The second via is formed above figure, second via and its surrounding will be located in the source-drain electrode layer pattern to be connected Part below region is as the source and drain connecting portion.
Optionally, the gate electrode layer also includes：Gate electrode layer figure to be connected, the gate electrode layer figure to be connected Shape includes grid and gate line；Forming first via is specially：Formed above the gate electrode layer figure to be connected First via, the part below first via and its peripheral region will be located in the gate electrode layer figure to be connected As the grid connecting portion.
Optionally, the preparation method also includes：The 3rd insulating barrier is covered on the transparency conducting layer；Form the 3rd mistake Hole and the 4th via, the 3rd via is through the 3rd insulating barrier and above the first electrode, the 4th mistake Hole is through the 3rd insulating barrier and above the second electrode；Compensating electrode is formed on the 3rd insulating barrier, institute The one end for stating compensating electrode is electrically connected by the 3rd via with the first electrode, the other end by the 4th via with it is described Second electrode electrically connects.
The third aspect of the present invention provides a kind of display device, including above-described array base palte.
In array base palte provided by the present invention and preparation method thereof, display device, for connecting grid connecting portion and source and drain The bridge part of connecting portion includes first electrode, connection electrode and the second electrode being sequentially connected, first electrode and grid connecting portion electricity Connection, second electrode electrically connect with source and drain connecting portion, by making connection electrode perpendicular to underlay substrate and perpendicular to the plane of reference (ginseng Face is examined perpendicular to underlay substrate and passes through first electrode, connection electrode and second electrode successively) area of section be less than first electricity Pole perpendicular to underlay substrate and perpendicular to the area of section of the plane of reference, again smaller than second electrode perpendicular to underlay substrate and perpendicular to The area of section of the plane of reference, it is inversely proportional according to the area of section of the resistance size of resistive conductor and resistive conductor, so as to relative to existing The resistance of technology connection electrode is increased, and then the resistance increase that bridge part is overall, when electrostatic charge accumulates in source and drain connecting portion Tired to cause when electrical potential difference is produced between source and drain connecting portion and grid connecting portion, bridge part strengthens the barrier effect of electrostatic charge, quiet Electric charge flowing velocity in bridge part slows down, and effectively prevent caused ESD event in production process.
Fig. 1 a are the figure electrical connection in the figure on array base palte in gate electrode layer and source-drain electrode layer in the prior art Sectional view；
Fig. 1 b are the figure electrical connection in the figure on array base palte in gate electrode layer and source-drain electrode layer in the prior art Plan；
In figure and source-drain electrode layer on the array base palte that Fig. 2 a are provided by the embodiment of the present invention one in gate electrode layer Figure electrical connection sectional view；
In figure and source-drain electrode layer on the array base palte that Fig. 2 b are provided by the embodiment of the present invention one in gate electrode layer Figure electrical connection plan；
In figure and source-drain electrode layer on the array base palte that Fig. 3 a are provided by the embodiment of the present invention two in gate electrode layer Figure electrical connection sectional view；
In figure and source-drain electrode layer on the array base palte that Fig. 3 b are provided by the embodiment of the present invention two in gate electrode layer Figure electrical connection plan；
In figure and source-drain electrode layer on the array base palte that Fig. 4 is provided by the embodiment of the present invention three in gate electrode layer The plan of figure electrical connection；
Each block diagram of the preparation method for the array base palte that Fig. 5 a~Fig. 5 f are provided by the embodiment of the present invention four.
1- underlay substrates；2- grid connecting portions；
The insulating barriers of 3- first；4- source and drain connecting portions；
The insulating barriers of 5- second；6- bridge parts；
61- first electrodes；62- second electrodes；
63- connection electrodes；The vias of 7- first；
The vias of 8- second；The insulating barriers of 9- the 3rd；
10- compensating electrodes；The vias of 11- the 3rd；
The vias of 12- the 4th；Source-drain electrode layer pattern to be connected 13-；
14- metal levels；The R1R2- plane of references；
OX1- first directions；OX2- second directions；
The size of L- connection electrodes in the first direction；The size of W- connection electrodes in a second direction；
Cross-wise direction of the A1A2- connection electrodes perpendicular to the plane of reference；
Cross-wise direction of the A1 ' A2 '-first electrode perpendicular to the plane of reference；
Cross-wise direction of A1 " the A2 "-second electrode perpendicular to the plane of reference.
It should be noted that in order to more clearly represent the relative position relation of each film layer, in Fig. 2 b, Fig. 3 b, figure 4th, transparency process has been carried out to bridge part 6 and compensating electrode 10 in Fig. 5 d, Fig. 5 e and Fig. 5 f.
Also, in Fig. 3 b, Fig. 4, Fig. 5 e and Fig. 5 f, the size of the 3rd via 11 is less than the size of the first via 7, be In order to more clearly represent the relative position relation of the 3rd via 11 and the first via 7, do not represent the 3rd via 11 with The actual ratio of the size of first via 7；And the size of the 4th via 12 is less than the size of the second via 8, be in order to more The relative position relation of the 4th via 12 and the second via 8 is clearly represented, does not represent the 4th via 12 and the second via 8 The actual ratio of size.
The present embodiment provides a kind of array base palte, as shown in figures 2 a and 2b, including：Underlay substrate 1, and stack gradually in lining Gate electrode layer, the first insulating barrier 3, source-drain electrode layer, the second insulating barrier 5 and transparency conducting layer on substrate 1.Gate electrode layer bag Grid connecting portion 2 is included, source-drain electrode layer includes source and drain connecting portion 4, and transparency conducting layer includes bridge part 6.
Wherein, bridge part 6 includes：The first electrode 61 electrically connected with grid connecting portion 2；Electrically connected with source and drain connecting portion 4 Second electrode 62；Connection electrode 63, one end of the connection electrode 63 electrically connect with first electrode 61, the other end and second electrode 62 Electrical connection.
Using perpendicular to the underlay substrate 1 and successively face Jing Guo first electrode 61, connection electrode 63 and second electrode 62 as ginseng Examine face R1R2, connection electrode 63 is perpendicular to underlay substrate 1 and perpendicular to plane of reference R1R2 section (i.e. along Fig. 2 b A1A2 directions Section) area be less than first electrode 61 perpendicular to underlay substrate 1 and perpendicular to the section with reference to R1R2 faces (i.e. along Fig. 2 b The section in A1 ' A2 ' directions) area, connection electrode 63 is perpendicular to underlay substrate 1 and perpendicular to plane of reference R1R2 area of section Less than second electrode 62 perpendicular to underlay substrate 1 and perpendicular to plane of reference R1R2 section (i.e. along Fig. 2 b A1 " A2 " direction Section) area.
If it should be noted that the bridge part for being used for electric connection grid connecting portion and source and drain connecting portion in the prior art is pressed into area Domain is divided, and bridge part can be divided into three parts：It is covered in the part above grid connecting portion, is covered on source and drain connecting portion The part and part positioned there between of side, can be referred to as first electrode by the part being covered in above grid connecting portion, be covered in Part above source and drain connecting portion is referred to as second electrode, and the part between grid connecting portion and source and drain connecting portion is referred to as connecting electricity Pole.
The first electrode 61 of bridge part 6 is corresponding with the first electrode of bridge part in the prior art in the present embodiment, this reality It is corresponding with the second electrode of bridge part in the prior art to apply the second electrode 62 of bridge part 6 in example, bridge part 6 in the present embodiment Connection electrode 63 it is corresponding with the connection electrode of bridge part in the prior art.
To ensure electrical connection good between grid connecting portion and source and drain connecting portion, it is believed that first electrode in the present embodiment 61 size is identical or approximately the same with the size of first electrode in the prior art, in the present embodiment the size of second electrode 62 with The size of second electrode is identical or approximately the same in the prior art, due to the cutting along A1A2 directions of connection electrode 63 in the present embodiment Face area is both less than area of section of the first electrode 61 along A1 ' A2 ' directions, is less than the cutting along A1 " A2 " direction of second electrode 62 again Face area, it can be considered that area of section of the connection electrode 63 along A1A2 directions had both been less than in the prior art the in the present embodiment Area of section of one electrode along correspondence direction (perpendicular to the direction that second electrode is pointed to from first electrode), is less than prior art again Area of section of the middle second electrode along correspondence direction.
It is usually again to seamlessly transit from first electrode to second electrode due in the prior art, it is believed that in the prior art Area of section of the connection electrode along correspondence direction and area of section of the first electrode along correspondence direction are identical or approximately the same, with Area of section of two electrodes along correspondence direction is identical or approximately the same, thus in the present embodiment connection electrode 63 along A1A2 directions Area of section is less than area of section of the connection electrode along correspondence direction in the prior art.
To ensure electrical connection good between grid connecting portion 2 and source and drain connecting portion 4, it is believed that connect electricity in the present embodiment The length of pole 63 is not less than the length of connection electrode in the prior art (along correspondence direction (along the size perpendicular to cross-wise direction) Size), it is in inverse ratio according to the cross-sectional area of the resistance value of resistive conductor and resistive conductor, it is proportional with the length of resistive conductor, it can obtain Into the present embodiment, the resistance of connection electrode 63 is more than the resistance of connection electrode in the prior art.
Based on derivation above, due to the chi of the size of first electrode 61 and first electrode in the prior art in the present embodiment Very little identical or approximately the same, the size of second electrode 62 is identical or near with the size of second electrode in the prior art in the present embodiment Patibhaga-nimitta is same, therefore the resistance of first electrode 61 is identical with the resistance of first electrode in the prior art in the present embodiment or approximate phase Together, the resistance of second electrode 62 is identical or approximately the same with the resistance of second electrode in the prior art in the present embodiment, so as to To obtain：Connection electrode 63, first electrode 61, the resistance sum of second electrode 62 are more than in the present embodiment connects in the prior art The resistance sum of electrode, first electrode and second electrode, i.e., the resistance of bridge part 6 is more than and bridged in the prior art in the present embodiment The resistance in portion.
In the forming process of the second insulating barrier 5 and bridge part 6, although electrostatic charge accumulates in source and drain connecting portion 4, cause Electrical potential difference is produced between source and drain connection 4 and grid connecting portion 2, but because the resistance of bridge part 6 in the present embodiment is larger, therefore bridge Socket part 6 strengthens the barrier effect of electrostatic charge, and flowing velocity of the electrostatic charge in bridge part 6 slows down, so as to effectively prevent Stop caused ESD event in production process, improve the reliability of array base palte.
To realize the electrical connection of first electrode 61 and grid connecting portion 2, the array base palte that the present embodiment is provided may also include： The first via 7 through the first insulating barrier 3 and the second insulating barrier 5 and above grid connecting portion 2, first electrode 61 pass through first Via 7 electrically connects with grid connecting portion 2.To realize the electrical connection of second electrode 62 and source and drain connecting portion 4, what the present embodiment was provided Array base palte may also include：The second via 8 through the second insulating barrier 5 and above source and drain connecting portion 4, second electrode 62 are logical The second via 8 is crossed to electrically connect with source and drain connecting portion 4.
In the present embodiment, if it should be noted that set bridge part 6 during the resistance of setting bridge part 6 Resistance it is too small, then can not effectively slow down the flowing velocity of electrostatic charge, and then also just can not effectively prevent ESD, If the resistance of set bridge part 6 is excessive, easily causing electrostatic charge to be collected in source and drain connecting portion 4 can not discharge, and increase The demand and bridge to anti-static ability are preferably considered when adding the hidden danger in array base palte, therefore setting the resistance of bridge part 6 Socket part resistance it is excessive may factor of both increased hidden danger, the resistance of bridge part 6 is set in a rational scope It is interior, to maintain the equilibrium relation between both of the aforesaid factor.
Inventor has found by many experiments, is 50 μ in the OX1 in the first direction of connection electrode 63 of bridge part 6 size L M~10000 μm, and when OX2 size W is 1 μm~6 μm in a second direction (first direction OX1 parallel to plane of reference R1R2, second Direction OX2 is perpendicular to plane of reference R1R2, and plane determined by first direction OX1 and second direction OX2 is parallel to substrate base Plate), bridge part 6 can either efficiently reduce ESD event, and the electrostatic charge that and can enough makes to be accumulated in source and drain connecting portion 4 obtains Release.Further, it is 1 × 10 in the resistance of bridge part 66During Ω or so, reduce ESD and discharge electrostatic charges can reach most Excellent equilibrium relation.
Do not limited specifically for shape the present embodiment of connection electrode 63, preferably may be configured as it is linear, to ensure to connect Receiving electrode 63 has less cross-sectional area on A1A2 directions, effectively increases the resistance of connection electrode 63, and then increase bridge The resistance of socket part 6.
Specifically, connection electrode 63 can be linear, the connection electrode 63 of linear requires relatively low to manufacture difficulty.Or Person, connection electrode 63 can be wave linear shape, fold-line-shaped or spiral yarn shaped etc., due to wave, broken line or helix length compared with Long, the resistance of resistive conductor is directly proportional to the length of resistive conductor, therefore wave linear shape, fold-line-shaped or spiral yarn shaped connection electrode 63 Larger resistance can be produced under shorter distance, so that the spacing between first electrode 61 and second electrode 63 can Shorten, and then the spacing between grid connecting portion 2 and source and drain connecting portion 4 is shortened, reduce for electric connection grid electrode layer The area occupied of the structure of figure in middle figure and source-drain electrode layer.
In order to more significantly increase the resistance of connection electrode 63, can also be connected by changing grid connecting portion 2 with source and drain The relative position in portion 4, the relative position of the two is changed into shown in Fig. 2 b as being arranged in juxtaposition shown in Fig. 1 b in the prior art X1 is arranged in the first direction, so as to increase the spacing between grid connecting portion 2 and source and drain connecting portion 4, and then increases connection electricity The length of pole 63 so that the resistance increase of connection electrode 63.
It should be noted that gate electrode layer is in addition to including grid connecting portion 2 in the present embodiment, in addition to gate electrode to be connected Layer pattern, gate electrode layer figure to be connected electrically connect with grid connecting portion 2, gate electrode layer figure to be connected can be grid and/ Or gate line；First insulating barrier 3 concretely gate insulator；It can be also provided between the first insulating barrier 3 and source-drain electrode layer Active layer；Source-drain electrode layer is in addition to including source and drain connecting portion 4, in addition to source-drain electrode layer pattern to be connected, source to be connected Drain electrode layer figure electrically connects with source and drain connecting portion 4, and source-drain electrode layer pattern to be connected can be in source electrode, drain electrode and data wire At least one；Second insulating barrier 5 concretely passivation layer；Transparency conducting layer may also include pixel electricity in addition to including bridge part 6 Pole or public electrode.
The technical scheme provided based on embodiment one, set what is be connected electrically in the present embodiment above bridge part 6 Compensating electrode, after the electrostatic charge release in source and drain connecting portion 4, leading between enhancing grid connecting portion 2 and source and drain connecting portion 4 Electrical property, compensation increase the loss that the resistance of bridge part 6 is brought to the electric conductivity between grid connecting portion 2 and source and drain connecting portion 4.
Specifically, as shown in Figure 3 a and Figure 3 b shows, the array base palte that the present embodiment is provided also includes：Cover transparency conducting layer The 3rd insulating barrier 9；The 3rd via 11 through the 3rd insulating barrier 9 and above first electrode 61；Through the 3rd insulating barrier 9 And positioned at the 4th via 12 of the top of second electrode 62；Compensating electrode 10 on the 3rd insulating barrier 9, the compensating electrode 10 One end is electrically connected by the 3rd via 11 with first electrode 61, and the other end is electrically connected by the 4th via 12 with second electrode 62.
In above-mentioned technical proposal, by setting the 3rd insulating barrier 9 over transparent conductive layer, then on the 3rd insulating barrier 9 Compensating electrode 10 is set, compensating electrode 10 is electrically connected with first electrode 61, and is electrically connected with second electrode 62, so as to electrically connect The element of grid connecting portion 2 and source and drain connecting portion 4 includes bridge part 6 and compensating electrode 10, enhances grid connecting portion 2 and is connected with source and drain Electric conductivity between portion 4.
It should be noted that setting up for compensating electrode 10 can't trigger ESD event, this is due to the life in array base palte During production, electrostatic charge accumulates in source and drain connecting portion 4 when forming the second insulating barrier 5, is forming the process of bridge part 6 afterwards In, bridge part 6 is electrically connected grid connecting portion 2 and source and drain connecting portion 4, so as to which electrostatic charge is slowly discharged, therefore Formed before compensating electrode 10, electrostatic charge is not present in source and drain connecting portion 4, even if compensating electrode 10 enhances grid connection Electric conductivity between portion 2 and source and drain connecting portion 4, it will not also trigger ESD event.
In the present embodiment, the formation material of compensating electrode 10 can preferably use the low conductive material of resistance, such as：Metal material Material, ITO (Indium Tin Oxide, tin indium oxide) material etc., with preferably strengthen grid connecting portion 2 and source and drain connecting portion 4 it Between electric conductivity.
The shape of compensating electrode 10 can be consistent with the shape of bridge part 6, in order to further enhance grid connecting portion 2 and source Leak the electric conductivity between connecting portion 4, it is possible to increase the width of the part of the top of connection electrode 63 is covered in compensating electrode 10 (i.e. Along the size perpendicular to the direction of the plane of reference), to reduce the resistance of compensating electrode 10.
Based on embodiment one, the present embodiment using source-drain electrode layer pattern to be connected in source-drain electrode layer it is a part of as Source and drain connecting portion, or using a part for gate electrode layer figure to be connected in gate electrode layer as grid connecting portion, to reduce grid The area occupied of the structure of figure electrical connection in figure and source-drain electrode layer in electrode layer, simplify the structure of array base palte.
Using a part for source-drain electrode layer pattern to be connected as source and drain connecting portion scheme concretely：Such as Fig. 4 institutes Show, source-drain electrode layer also includes：Source-drain electrode layer pattern 13 to be connected, the source-drain electrode layer pattern 13 to be connected include source Pole, drain electrode and data wire, the second via 8 are to be connected positioned at the top of source-drain electrode layer pattern 13 to be connected, source and drain connecting portion 4 Source-drain electrode layer pattern 13 in part below the second via 8 and its peripheral region, specifically can be by the institute of second electrode 62 The part of covering is as source and drain connecting portion 4.Source and drain connecting portion 4 is integrated in by preceding solution by source-drain electrode to be connected In layer pattern 13, the making of the figure of source and drain connecting portion 4 is eliminated, the area occupied of source and drain connecting portion 4 is also saved on, simplifies The structure of array base palte.
Using a part for gate electrode layer figure to be connected as grid connecting portion scheme concretely：Gate electrode layer also wraps Include：Gate electrode layer figure to be connected, gate electrode layer figure to be connected include grid and gate line, and the first via is located at the company for the treatment of Above the gate electrode layer figure connect, grid connecting portion is to be located at the first via and its peripheral region in gate electrode layer figure to be connected The part of lower section, specifically can be using the part that first electrode 61 is covered as grid connecting portion.Grid are connected by preceding solution Socket part is integrated in gate electrode layer figure to be connected, eliminates the making of grid connecting portion figure, also saves on grid connecting portion Area occupied, simplify the structure of array base palte.
In the present embodiment, the compensating electrode 10 of its electrical connection can be also arranged in the top of bridge part 6, is connected to strengthen grid Electric conductivity between socket part 2 and source and drain connecting portion 4.
The formation material of compensating electrode 10 can be preferably the metal material to conduct electricity very well, formed compensating electrode 10 when can Formed with the metal level 14 on array base palte in addition to gate electrode layer and source-drain electrode layer with layer, be used to be formed not increase additionally The step of compensating electrode 10.
A kind of preparation method of array base palte is present embodiments provided, the preparation method includes：As shown in figure 5 a and 5b, Stack gradually to form gate electrode layer, the first insulating barrier, source-drain electrode layer and the second insulating barrier, gate electrode layer bag on underlay substrate Grid connecting portion 2 is included, source-drain electrode layer includes source and drain connecting portion 4 (it should be noted that due to the first insulating barrier and the second insulating barrier It is the transparent film layer of flood, therefore the first insulating barrier and the second insulating barrier is not showed that in Fig. 5 a~Fig. 5 f).
The preparation method also includes：As fig 5d, transparency conducting layer is formed over the second dielectric, the transparency conducting layer Including bridge part 6, the bridge part 6 includes：The first electrode 61 electrically connected with grid connecting portion 2；Electrically connected with source and drain connecting portion 4 Second electrode 62；Connection electrode 63, one end of the connection electrode 63 electrically connect with first electrode 61, the other end and second electrode 62 Electrical connection.
Using perpendicular to the underlay substrate and successively face Jing Guo first electrode 61, connection electrode 63 and second electrode 62 as reference Face, connection electrode 63 are less than first electrode 61 perpendicular to substrate base perpendicular to underlay substrate and perpendicular to the area of section of the plane of reference Plate and perpendicular to underlay substrate and small perpendicular to the area of section of the plane of reference perpendicular to the area of section of the plane of reference, connection electrode 63 In second electrode 62 perpendicular to underlay substrate and perpendicular to the area of section of the plane of reference.
Using the preparation method of above-mentioned array base palte, the cutting perpendicular to underlay substrate and perpendicular to the plane of reference of connection electrode 63 Face area had both been less than first electrode 61 perpendicular to underlay substrate and perpendicular to the area of section of the plane of reference, again smaller than second electrode 62 Perpendicular to underlay substrate and perpendicular to the area of section of the plane of reference, according to the resistance size of resistive conductor and the area of section of resistive conductor It is inversely proportional, so as to increase the resistance of connection electrode 63, and then increases the overall resistance of bridge part 6, it is right to enhance bridge joint 6 The barrier effect of electrostatic charge, slow down electrostatic charge flowing velocity in bridge part 6, effectively prevent in production process and produce Raw ESD event.
In order to realize the electrical connection of first electrode 61 and grid connecting portion 2, and realize second electrode 62 and source and drain connecting portion 4 Electrical connection, after the second insulating barrier is formed, and before transparency conducting layer is formed, the preparation method that the present embodiment is provided is also Including：As shown in Figure 5 c, form the first via 7 and the second via 8, the first via 7 run through the first insulating barrier and the second insulating barrier, And positioned at the top of grid connecting portion 2, so that the first electrode 61 being subsequently formed is electrically connected by the first via 7 with grid connecting portion 2, the Two vias 8 run through the second insulating barrier, and positioned at the top of source and drain connecting portion 4, so that the second electrode 62 being subsequently formed is by second Via 8 electrically connects with source and drain connecting portion 4.
In the present embodiment, source-drain electrode layer may also include：Source-drain electrode layer pattern to be connected, source-drain electrode to be connected Layer pattern includes source electrode, drain electrode and data wire, is electrically connected to reduce the figure in figure and source-drain electrode layer in gate electrode layer The area occupied of the structure connect, simplify array base palte structure, can using source-drain electrode layer pattern to be connected it is a part of as Source and drain connecting portion 4, then form the process of the second via 8 concretely：Is formed above source-drain electrode layer pattern to be connected Two vias 8, using the part being located in source-drain electrode layer pattern to be connected below second via 8 and its peripheral region as source Leak connecting portion 4.
Gate electrode layer may also include：Gate electrode layer figure to be connected, gate electrode layer figure to be connected include grid and Gate line, in order to reduce the area occupied of the structure of the electrical connection of the figure in figure and source-drain electrode layer in gate electrode layer, letter Change the structure of array base palte, can be using a part for gate electrode layer figure to be connected in gate electrode layer as grid connecting portion 2, then shape Into the first via 7 process concretely：The first via 7 is formed above gate electrode layer figure to be connected, will be to be connected Gate electrode layer figure in part below the first via 7 and its peripheral region as grid connecting portion 2.
The preparation method that the present embodiment is provided may also include：As shown in figs. 5 e and 5f, cover over transparent conductive layer 3rd insulating barrier；The 3rd via 11 and the 4th via 12 are formed, the 3rd via 11 is through the 3rd insulating barrier and is located at first electrode 61 tops, the 4th via 12 is through the 3rd insulating barrier and positioned at the top of second electrode 62；Compensation electricity is formed on the 3rd insulating barrier Pole 10, one end of the compensating electrode 10 are electrically connected by the 3rd via 11 with first electrode 61, and the other end passes through the 4th via 12 Electrically connected with second electrode 62.Because compensating electrode 10 electrically connects with first electrode 61, and electrically connected with second electrode 62, therefore The element of electric connection grid connecting portion 2 and source and drain connecting portion 4 includes bridge part 6, includes compensating electrode 10 again, so as to enhance grid Electric conductivity between connecting portion 2 and source and drain connecting portion 4, it compensate for when forming bridge part 6 to prevent ESD from increasing bridge part 6 resistance, the loss brought to the electric conductivity between grid connecting portion 2 and source and drain connecting portion 4.
A kind of display device is present embodiments provided, the display device includes the array described in one~embodiment of embodiment three Substrate.Due to being used for the bridge of electric connection grid connecting portion and source and drain connecting portion in the array base palte described in one~embodiment of embodiment three The resistance of socket part is larger, can slow down flowing velocity of the electrostatic charge in bridge part, therefore in the production process of array base palte The middle probability that ESD event occurs is reduced, and the reliability of array base palte is improved, so as to include the institute of one~embodiment of embodiment three The reliability for stating the display device of array base palte is higher.
It should be noted that the display device that the present embodiment is provided can be liquid crystal panel, Electronic Paper, OLED (Organic Light-Emi tt ing Diode, Organic Light Emitting Diode) panel, mobile phone, tablet personal computer, television set, display Any product or part with display function such as device, notebook computer, DPF, navigator.
1. a kind of array base palte, including：Underlay substrate, and stack gradually in the gate electrode layer on the underlay substrate, first exhausted Edge layer, source-drain electrode layer, the second insulating barrier and transparency conducting layer, the gate electrode layer include grid connecting portion, the source-drain electrode Layer includes source and drain connecting portion, and the transparency conducting layer includes bridge part, it is characterised in that the bridge part includes：
The first electrode electrically connected with the grid connecting portion；
The second electrode electrically connected with the source and drain connecting portion；
Connection electrode, one end of the connection electrode electrically connect with the first electrode, and the other end is electrically connected with the second electrode Connect；
With perpendicular to the underlay substrate and successively face Jing Guo the first electrode, the connection electrode and the second electrode For the plane of reference, the connection electrode is less than described the perpendicular to the underlay substrate and perpendicular to the area of section of the plane of reference One electrode is perpendicular to the underlay substrate and perpendicular to the area of section of the plane of reference, and the connection electrode is perpendicular to the lining Substrate and perpendicular to the plane of reference area of section be less than the second electrode perpendicular to the underlay substrate and perpendicular to The area of section of the plane of reference.
2. array base palte according to claim 1, it is characterised in that the array base palte also includes：
The first via through first insulating barrier and second insulating barrier and above the grid connecting portion, described the One electrode is electrically connected by first via with the grid connecting portion；
The second via through second insulating barrier and above the source and drain connecting portion, the second electrode passes through described Second via electrically connects with the source and drain connecting portion.
3. array base palte according to claim 2, it is characterised in that the source-drain electrode layer also includes：Source to be connected Drain electrode layer figure, the source-drain electrode layer pattern to be connected include source electrode, drain electrode and data wire；
For second via above the source-drain electrode layer pattern to be connected, the source and drain connecting portion is described to be connected Source-drain electrode layer pattern in part below second via and its peripheral region.
4. array base palte according to claim 2, it is characterised in that the gate electrode layer also includes：Grid electricity to be connected Pole layer pattern, the gate electrode layer figure to be connected include grid and gate line；
For first via above the gate electrode layer figure to be connected, the grid connecting portion is the grid to be connected Part of the electrode layer pattern middle position below first via and its peripheral region.
5. array base palte according to claim 1, it is characterised in that on the plane parallel to the underlay substrate, with Direction parallel to the plane of reference is first direction, using perpendicular to the direction of the plane of reference as second direction, the connection Size of the electrode along the first direction is 50 μm~10000 μm, and the size along the second direction is 1 μm~6 μm.
6. array base palte according to claim 1, it is characterised in that the array base palte also includes：
Cover the 3rd insulating barrier of the transparency conducting layer；
The 3rd via through the 3rd insulating barrier and above the first electrode；
The 4th via through the 3rd insulating barrier and above the second electrode；
Compensating electrode on the 3rd insulating barrier, one end of the compensating electrode pass through the 3rd via and described the One electrode is electrically connected, and the other end is electrically connected by the 4th via with the second electrode.
7. a kind of preparation method of array base palte, including：Stack gradually to form gate electrode layer, the first insulation on underlay substrate Layer, source-drain electrode layer and the second insulating barrier, the gate electrode layer include grid connecting portion, and the source-drain electrode layer connects including source and drain Portion, it is characterised in that the preparation method also includes：Form transparency conducting layer on second insulating barrier, it is described transparent to lead Electric layer includes bridge part, and the bridge part includes：The first electrode electrically connected with the grid connecting portion；With the source and drain connecting portion The second electrode of electrical connection；Connection electrode, one end of the connection electrode electrically connect with the first electrode, the other end with it is described Second electrode electrically connects；With perpendicular to the underlay substrate and successively by the first electrode, the connection electrode and described The face of second electrode is the plane of reference, and the connection electrode is perpendicular to the underlay substrate and perpendicular to the section face of the plane of reference Product is less than the first electrode perpendicular to the underlay substrate and perpendicular to the area of section of the plane of reference, the connection electrode It is less than the second electrode perpendicular to the substrate perpendicular to the underlay substrate and perpendicular to the area of section of the plane of reference Substrate and perpendicular to the area of section of the plane of reference.
8. the preparation method of array base palte according to claim 7, it is characterised in that formed second insulating barrier it Afterwards, and before the transparency conducting layer is formed, the preparation method also includes：
Form the first via and the second via；First via runs through first insulating barrier and second insulating barrier, and Above the grid connecting portion, so that the first electrode is electrically connected by first via with the grid connecting portion；Institute State the second via and run through second insulating barrier, and above the source and drain connecting portion, so that the second electrode passes through institute The second via is stated to electrically connect with the source and drain connecting portion.
9. the preparation method of array base palte according to claim 8, it is characterised in that the source-drain electrode layer also includes： Source-drain electrode layer pattern to be connected, the source-drain electrode layer pattern to be connected include source electrode, drain electrode and data wire；
Forming second via is specially：The second via is formed above the source-drain electrode layer pattern to be connected, will Part in the source-drain electrode layer pattern to be connected below second via and its peripheral region is as the source Leak connecting portion.
10. the preparation method of array base palte according to claim 8, it is characterised in that the gate electrode layer also includes：Treat The gate electrode layer figure of connection, the gate electrode layer figure to be connected include grid and gate line；
Forming first via is specially：The first via is formed above the gate electrode layer figure to be connected, by institute The part in gate electrode layer figure to be connected below first via and its peripheral region is stated to connect as the grid Portion.
11. the preparation method of array base palte according to claim 7, it is characterised in that the preparation method also includes：
The 3rd insulating barrier is covered on the transparency conducting layer；
The 3rd via and the 4th via are formed, the 3rd via is through the 3rd insulating barrier and in the first electrode Side, the 4th via is through the 3rd insulating barrier and above the second electrode；
Form compensating electrode on the 3rd insulating barrier, one end of the compensating electrode passes through the 3rd via and described the One electrode is electrically connected, and the other end is electrically connected by the 4th via with the second electrode.
12. a kind of display device, it is characterised in that including the array base palte described in any one of claim 1~6.
CN201510209605.6A 2015-04-28 2015-04-28 Array base palte and preparation method thereof, display device CN104934440B (en)
CN201510209605.6A CN104934440B (en) 2015-04-28 2015-04-28 Array base palte and preparation method thereof, display device
US15/097,536 US9818739B2 (en) 2015-04-28 2016-04-13 Array substrate and manufacturing method thereof, and a display device
CN104934440A CN104934440A (en) 2015-09-23
CN104934440B true CN104934440B (en) 2017-12-08
ID=54121528
US (1) US9818739B2 (en)
CN (1) CN104934440B (en)
2015-04-28 CN CN201510209605.6A patent/CN104934440B/en active IP Right Grant
2016-04-13 US US15/097,536 patent/US9818739B2/en active Active
US9818739B2 (en) 2017-11-14
US20160322346A1 (en) 2016-11-03
CN104934440A (en) 2015-09-23
CN102622122B (en) 2015-11-18 Touch-screen
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KR101405339B1 (en) 2014-06-10 Liquid crystal display and method of fabricating the same
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