CN208819883U - Flexible display panels and display device - Google Patents

Abstract

The utility model relates to field of display technology, disclose a kind of flexible display panels and the display device using the flexible display panels.In the utility model, flexible display panels include: the drive circuit layer being cascading, planarization layer and anode layer；Anode layer includes the anode pattern that array is arranged in planarization layer surface；Each anode pattern edge on planarization layer at least partly in anode pattern is each formed with multiple contact holes；Flexible display panels further include being set in drive circuit layer, the conductive part for being electrically connected multiple contact holes of the edge of anode pattern；Wherein, the bending resistance of conductive part is greater than the bending resistance of anode pattern；Anode pattern is electrically connected by the multiple contact holes and drive circuit layer of its edge.The utility model embodiment is anode supply by multiple contact holes, so as in anode crack, improve the overall brightness of pixel.

Description

Flexible display panels and display device

Technical field

The utility model relates to field of display technology, in particular to a kind of flexible display panels and the use Flexible Displays The display device of panel.

Background technique

With the development of display technology, display panel is widely used in the portable electronic products such as mobile phone, palm PC In, especially flexible display screen, it is foldable with its, easy to carry, have a wide range of application, the viewing experience advantages such as more preferably increasingly by To the favor of user, become the development trend of the following various intelligent display screens.Mainly application is one of Flexible Displays at present For foldable display.However, the flexible screen of Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) etc. In the process of bending, there are anode crack risks for body.

At least there are the following problems in the prior art for inventor's discovery: since existing anode passes through a contact hole (Via Hole) it is connect with driving circuit, once anode crack is at multiple portions, keeping the part of connection to shine with the hole Via not will receive shadow It rings, and the part disconnected with the hole Via can lead to not shine since no current inputs, the entirety for substantially reducing pixel is bright Degree.

Utility model content

The purpose of this utility model is to provide a kind of flexible display panels and using the display of the flexible display panels Device is anode supply by multiple contact holes, so as in anode crack, improve the overall brightness of pixel.

In order to solve the above technical problems, the embodiments of the present invention provide a kind of flexible display panels, comprising: successively Drive circuit layer, planarization layer and the anode layer being stacked；The anode layer includes that array is arranged in the planarization layer The anode pattern on surface；Each anode pattern edge on the planarization layer in at least partly described anode pattern is respectively formed There are multiple contact holes；The flexible display panels further include being set in the drive circuit layer, are used for the anode pattern Edge the multiple contact hole be electrically connected conductive part；Wherein, the bending resistance of the conductive part is greater than described The bending resistance of anode pattern；The multiple contact hole and the drive circuit layer of the anode pattern by its edge It is electrically connected.

In order to solve the above technical problems, the embodiments of the present invention provide a kind of display device, including as previously described Flexible display panels.

The utility model embodiment in terms of existing technologies, passes through the edge shape in planarization layer Anodic figure At multiple contact holes, and each anode pattern is electrically connected by multiple contact holes and drive circuit layer, so that multiple Contact hole is an anode pattern power supply, therefore, in anode crack, as long as the anode part and some contact hole of fracture are kept Connection, the then anode part being broken may continue to work, to improve the brightness of pixel when anode is broken.Also, multiple contacts Hole is electrically connected by conductive part, so one in multiple contact holes is electrically connected with drive circuit layer may make multiple connect Contact hole can be connect with drive circuit layer, thus be conducive to simplify driving circuit structure, meanwhile, multiple contact holes pass through bending resistance Folding endurance can be bigger than anode pattern conductive part connection so that conductive part bending when it is not easy to break so that anode pattern pair The multiple contact holes answered reliably are connect with drive circuit layer.

As one embodiment, the corresponding conductive part of the anode pattern includes several wires, the anode pattern Corresponding the multiple contact hole is electrically connected by several wires.An anode figure is connected by a wires Multiple contact holes of shape, structure are simple；And pass through multiple contact holes of more wires jointed anode figures, it can further mention High multiple contact holes keep the reliability being electrically connected.

As one embodiment, the metal wire is titanium/aluminium composite-layer metal line or molybdenum/aluminium composite-layer metal line.

As one embodiment, when the metal wire is titanium/aluminium composite-layer metal line, the titanium/aluminium composite-layer metal Line is specially titanium/aluminium/titanium composite-layer metal line, and titanium/aluminium/titanium composite-layer metal line has Low ESR and bending resistance excellent The characteristics of, thus it is suitable for the connecting wire of each contact hole.

As one embodiment, when the metal wire is molybdenum/aluminium composite-layer metal line, the molybdenum/aluminium composite-layer metal Line is specially molybdenum/aluminium/molybdenum composite-layer metal line, and molybdenum/aluminium/molybdenum composite-layer metal line also has Low ESR and stronger resistant to bending Performance, thus it is also suitable for the connecting wire of each contact hole.

As one embodiment, the corresponding contact hole of the anode pattern is even number, and contact hole described in even number is equal The even edge for being distributed in the anode pattern.It, can be in anode when multiple contact holes are uniformly distributed in the edge of anode pattern When figure bending fracture, the anode pattern of basic guarantee larger area remains to work normally.

As one embodiment, the quantity of the corresponding contact hole of the anode pattern is 2 or 4.

As one embodiment, one in the multiple contact hole of the anode pattern edge is electric with the driving Road floor is electrically connected.In this way, can be in the case where not increasing drive circuit layer complexity, pixel when improving anode bending fracture Brightness.

As one embodiment, at least one and the driving of the multiple contact hole of the anode pattern edge Thin film transistor (TFT) in circuit layer is electrically connected.

Detailed description of the invention

Fig. 1 is the cross section structure schematic diagram according to the utility model first embodiment flexible display panels；

Fig. 2 is shown according to the vertical view that the conductive part of the utility model first embodiment flexible display panels is a wires It is intended to；

Fig. 3 is shown according to the vertical view that the conductive part of the utility model first embodiment flexible display panels is two wires It is intended to；

Fig. 4 is the structural schematic diagram according to the utility model second embodiment flexible display panels.

Specific embodiment

It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer Each embodiment of type is explained in detail.However, it will be understood by those skilled in the art that in each reality of the utility model It applies in example, in order to make the reader understand this application better, many technical details are proposed.But it is even if thin without these technologies Section and the various changes and modifications based on following embodiment, also may be implemented each claim of the application skill claimed Art scheme.

The first embodiment of the utility model is related to a kind of flexible display panels, can be applied to display device.Such as Fig. 1,2 institutes Show, the flexible display panels of the present embodiment include: the drive circuit layer 10 being cascading, planarization layer (PLN: Planarization layer) 11 and anode layer, anode layer include the anode pattern that array is arranged in 11 surface of planarization layer 120, for brevity, Fig. 1 illustrates only an anode pattern 120, on planarization layer 11 at least partly in anode pattern 120 Each 120 edge of anode pattern is each formed with multiple contact holes 110, and flexible display panels further include being set to drive circuit layer On 10, and the conductive part 111 for being electrically connected multiple contact holes 110 of the edge of anode pattern 120, wherein it is described The bending resistance of conductive part 111 is greater than the bending resistance of the anode pattern 120, and anode pattern 120 passes through its edge Multiple contact holes 110 and drive circuit layer 10 be electrically connected.The present embodiment in terms of existing technologies, by planarizing The edge of layer Anodic figure forms multiple contact holes, and each anode pattern passes through multiple contact holes and drive circuit layer It is electrically connected, so that multiple contact holes are an anode pattern power supply, therefore, in anode crack, as long as the sun of fracture Pole part and some contact hole keep connecting, then the anode part being broken may continue to work, thus picture when improving anode fracture The brightness of element.Also, multiple contact holes are electrically connected by conductive part, so one in multiple contact holes and drive circuit layer It is electrically connected and multiple contact holes is aloowed to connect with drive circuit layer, thus be conducive to simplify driving circuit structure, Meanwhile the conductive part connection that multiple contact holes are bigger than anode pattern by bending resistance, so that conductive part is in bending It is not easy to break, so that the corresponding multiple contact holes of anode pattern are reliably connect with drive circuit layer.Below to the present embodiment The realization details of flexible display panels is specifically described, and the following contents is only for convenience of the realization details provided is understood, not Implement the necessary of this programme.

Specifically, the bending demand of the different display areas of flexible display panels may be different, such as the viewing area having The bending degree that domain needs is larger, and the bending degree that some display areas need is smaller.It therefore, in practical applications, both can be with The multiple contact holes 110 of setting are respectively corresponded for all anode patterns 120 in flexible display panels, or Flexible Displays face The biggish anode pattern 120 of the bending degree of demand is correspondingly arranged multiple contact holes 110 in plate, and be demand bending degree compared with Small anode pattern 120 is correspondingly arranged one contact hole 110 of small number of contact hole 110 or setting.For example, to be flexible aobvious Show that the anode pattern 120 in face plate center region respectively corresponds the multiple contact holes 110 of setting, and is flexible display panels marginal zone The anode pattern 120 in domain respectively corresponds one contact hole 110 of setting.

Anode pattern includes but is not limited to rectangular anode figure, and in some instances, anode pattern can also be circle, three It is angular, square etc..The quantity for the contact hole that each anode pattern is correspondingly arranged can be odd number or even number, such as can Think that each circular anode figure is correspondingly arranged 3 contact holes, is correspondingly arranged 2 contact holes for each rectangular anode figure.Its In, which may be uniformly distributed in the edge of anode pattern 120.For example, 2 contact holes can be symmetrical arranged In the two sides of bending axis, bending axis is, for example, the longitudinal axis of rectangular anode figure 120, and so without being limited thereto, bending axis can also To be the horizontal axis of rectangular anode figure 120.In addition, multiple contact holes to be all set in the edge of anode pattern 120, it is ensured that The flatness of the light emitting region of anode pattern 120, thus be conducive to control the luminescent layer between anode pattern and cathode layer, such as The movement of the carrier of organic diode luminescent layer.

Planarization layer 11 can be the organic layer of the formation such as acrylic, polyimides (PI) or benzocyclobutene (BCB).It lifts For example, the processing of contact hole 110 can form via hole (i.e. through-hole) by exposure technology on planarization layer 11, planarize During forming anode pattern 120 on layer 11, segment anode layer material can be filled in via structure, electrically be connected to be formed Connect the contact hole 110 of anode pattern 120 and driving circuit.So without being limited thereto, any mode for being capable of forming contact hole exists In the protection scope of the present embodiment.Also, multiple contact holes 110 can complete the process together, with an existing only contact hole It compares, not will increase the complexity of technique substantially.The exposure technology of contact hole 110 is well known to those skilled in the art, herein It repeats no more.Anode pattern 120 can for such as Indium-tin Oxide Transparent Conductive Film (ITO)/silver-colored (Ag)/transparent conductive film (ITO) or The hybrid conductive layer that person's silver (Ag)/transparent conductive film (ITO) is formed.It, can also be in planarization layer after forming anode pattern 120 11 and segment anode figure 120 on formed pixel confining layer 13, pixel confining layer 13 can be by polyimides (PI), polyamide (PA), the organic material of benzocyclobutene (BCB), acryl resin or phenolic resin etc. is formed.

Please refer to Fig. 2, Fig. 3, in the present embodiment, the corresponding conductive part 111 of each anode pattern 120 for example respectively includes several Multiple contact holes 110 of wires, i.e. one or more metal wires, each anode pattern are electrical by several wires Connection.Specifically, multiple contact holes of an anode pattern are for example concatenated by one or more metal wires.In some examples In, multiple contact holes can be concatenated by two wires, by more wires can further enhance conductive part 111 can By property, it is ensured that multiple contact holes 110 are able to maintain when bending degree is larger to be electrically connected with drive circuit layer 10.Specifically, Metal wire is, for example, titanium/aluminium composite-layer metal line or molybdenum/aluminium composite-layer metal line.In practical applications, metal wire can be with shape At in drive circuit layer.Preferably, metal wire can be three layers of composite-layer metal line, be titanium/aluminium composite layer gold in metal wire Metal wire is, for example, titanium/aluminium/titanium (Ti/Al/Ti) composite-layer metal line when belonging to line；It is molybdenum/aluminium composite-layer metal line in metal wire When, metal wire is, for example, molybdenum/aluminium/molybdenum Mo/Al/Mo composite-layer metal line.Because metal wire direct impedance is lower, thus can make At thinner cabling, and the bending resistance of itself is better than anode pattern, thus even if anode cracks when bending, metal wire It is not easy to break, so that multiple holes Via can continue to provide signal for anode.So without being limited thereto, conductive part, which can use, appoints The metal wire how impedance is low and bending resistance is excellent.In practical applications, one of conductive part or more wires are for example It can process to obtain using existing yellow light and dry etching or wet-etching technology, details are not described herein again.

It is noted that in the present embodiment, one in multiple contact holes 110 of each 120 edge of anode pattern with Drive circuit layer 10 is electrically connected, specifically, one in multiple contact holes 110 of each 120 edge of anode pattern and driving Thin film transistor (TFT) (Thin Film Transistor, TFT) in circuit layer 10 is electrically connected, i.e., by the drain electrode of thin film transistor (TFT) One be connected in multiple contact holes 110 of 120 edge of anode pattern.In other words, an anode figure in the present embodiment Shape only needs a TFT driving circuit, thus, the present embodiment can in the case where not increasing the complexity of drive circuit layer, The overall brightness of pixel is improved when anode pattern is broken.So without being limited thereto, multiple contact holes of each anode pattern edge can also To be electrically connected with drive circuit layer.

The present embodiment in terms of existing technologies, by the way that multiple contacts are arranged at the edge of planarization layer Anodic figure Hole, and the multiple contact hole is electrically connected by conductive part, and one in multiple contact holes and drive circuit layer are electrical Connection, so that multiple contact holes are an anode pattern power supply, therefore, in anode crack, as long as the anode portion of fracture Divide and keep connecting with some contact hole, then the anode part being broken may continue to work, thus pixel when improving anode fracture Overall brightness.Also, multiple contact holes conductive part connection bigger than anode pattern by bending resistance, so that each lead Electric portion is not easy to break in bending, ensures that multiple contact holes and drive circuit layer are reliably connected；In addition, one in multiple contact holes A to connect with drive circuit layer, i.e., multiple contact holes only need a driving circuit to have so as to reduce driving circuit complexity Conducive to reducing cost.

The second embodiment of the utility model is related to a kind of flexible display panels.Second embodiment and first embodiment are substantially Identical, be in place of the main distinction: in the first embodiment, an anode pattern is electrically connected with two contact holes.And at this In utility model second embodiment, an anode pattern is electrically connected with four contact holes, to further increase anode fracture When pixel overall brightness.

Please continue to refer to Fig. 1 and Fig. 4, in the present embodiment, corresponding 4 contact holes 110 of an anode pattern 120, this 4 Contact hole 110 for example can be set in 4 apexes of rectangular anode figure 120 or the midpoint on each side.It is so without being limited thereto, In practical applications, the case where can also being concentrated according to the stress of anode pattern 120, arranges the position of contact hole 110, i.e. stress More contact hole 110 is correspondingly arranged on the area planarization layer more concentrated.In the present embodiment, Sole anode figure can be gathered around There are multiple bending axis, such as the longitudinal axis and horizontal axis etc. of rectangular anode figure 120, thus flexible display panels can be not limited to Single direction is foldable, but can be applied to the bending of any direction, i.e., regardless of any overbending direction, can guarantee in sun The corresponding luminescent layer of entire anode region can shine substantially when pole is broken.

The present embodiment is compared with previous embodiment, and the quantity of the contact hole by increasing anode pattern connection can be in sun Pole be broken when, better ensure that anode region can light-emitting area, further increase the overall brightness of pixel.

The utility model 3rd embodiment is related to a kind of display device, can be applied to electronic equipment.Electronic equipment can be Smart phone, tablet computer, media player, watch equipment, pendant equipment, headphone or earbud device, game are set Standby, navigation equipment etc., the present embodiment are not particularly limited the type of electronic equipment.The display device of the present embodiment includes such as First or second embodiment described in flexible display panels.

The present embodiment in terms of existing technologies, by the way that multiple contacts are arranged at the edge of planarization layer Anodic figure Hole, and the multiple contact hole is electrically connected by conductive part, and one in the multiple contact hole and drive circuit layer It is electrically connected, so that multiple contact holes are an anode pattern power supply, therefore, in anode crack, as long as the sun of fracture Pole part and some contact hole keep connecting, then the anode part being broken may continue to work, thus picture when improving anode fracture The overall brightness of element.Also, multiple contact holes conductive part connection bigger than anode pattern by bending resistance, so that respectively A conductive part is not easy to break in bending, ensures that multiple contact holes and drive circuit layer are reliably connected；In addition, in multiple contact holes One connect with drive circuit layer, i.e., multiple contact holes only need a driving circuit, so as to reduce driving circuit complexity Degree, advantageously reduces cost.

It will be understood by those skilled in the art that the various embodiments described above are to realize the specific implementation of the utility model Example, and in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit of the utility model And range.

Claims (10)

1. a kind of flexible display panels characterized by comprising the drive circuit layer that is cascading, planarization layer and Anode layer；

The anode layer includes the anode pattern that array is arranged in the planarization layer surface；

Each anode pattern edge on the planarization layer in at least partly described anode pattern is each formed with multiple contacts Hole；

The flexible display panels further include being set in the drive circuit layer, for by the edge of the anode pattern The conductive part that the multiple contact hole is electrically connected；Wherein, the bending resistance of the conductive part is greater than the anode pattern Bending resistance；

The anode pattern is electrically connected by the multiple contact hole of its edge and the drive circuit layer.

2. flexible display panels according to claim 1, which is characterized in that the corresponding conductive part of the anode pattern includes Several wires, the corresponding the multiple contact hole of the anode pattern are electrically connected by several wires.

3. flexible display panels according to claim 2, which is characterized in that the metal wire is titanium/aluminium composite-layer metal Line or molybdenum/aluminium composite-layer metal line.

4. flexible display panels according to claim 3, which is characterized in that golden for titanium/aluminium composite layer in the metal wire When belonging to line, the titanium/aluminium composite-layer metal line is specially titanium/aluminium/titanium composite-layer metal line.

5. flexible display panels according to claim 3, which is characterized in that golden for molybdenum/aluminium composite layer in the metal wire When belonging to line, the molybdenum/aluminium composite-layer metal line is specially molybdenum/aluminium/molybdenum composite-layer metal line.

6. flexible display panels according to claim 1, which is characterized in that the corresponding contact hole of the anode pattern is even It is several, and contact hole described in even number is uniformly distributed in the edge of the anode pattern.

7. flexible display panels according to claim 6, which is characterized in that the number of the corresponding contact hole of the anode pattern Amount is 2 or 4.

8. flexible display panels according to claim 1, which is characterized in that the anode pattern edge it is the multiple One in contact hole is electrically connected with the drive circuit layer.

9. flexible display panels according to claim 1, which is characterized in that the anode pattern edge it is the multiple At least one of contact hole is electrically connected with the thin film transistor (TFT) in the drive circuit layer.

10. a kind of display device, which is characterized in that including flexible display panels as claimed in any one of claims 1-9 wherein.