CN110333268A - A kind of display panel, display device and crack detecting method - Google Patents
A kind of display panel, display device and crack detecting method Download PDFInfo
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- CN110333268A CN110333268A CN201910625028.7A CN201910625028A CN110333268A CN 110333268 A CN110333268 A CN 110333268A CN 201910625028 A CN201910625028 A CN 201910625028A CN 110333268 A CN110333268 A CN 110333268A
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Abstract
A kind of display panel, display device and crack detecting method, wherein display panel includes: substrate, and substrate includes display area and non-display area, display panel further include: crack detection line and detection sub-circuit；Crack detection line is located in non-display area, and part surrounds display area, and one end of crack detection line is connect with first input end；Detect sub-circuit, in non-display area, it is connect respectively with crack detection line, the second input terminal and the first output end, for under the control of the signal of crack detection line, the signal of the second input terminal is provided to the first output end, whether there is crackle to detect display panel according to the output signal of the first output end.The detection efficiency to micro-crack can be improved by setting crack detection line and detection sub-circuit in the application, to improve the yield of display panel.
Description
Technical field
Present document relates to field of display technology, and in particular to a kind of display panel, display device and crack detecting method.
Background technique
Display panel in the actual production process, is easy to crack under stress, and the presence of crackle will lead to
Moisture infiltration forms defect in turn, influences product yield.In the related technology, it is detected using one or more mutually independent conducting wire
Crackle.
Through inventor the study found that when display panel cracks, conducting wire may slightly rupture at place, completely not disconnected
It opens, i.e., there are micro-cracks for conducting wire.Crack detecting method in the related technology is not high to the detection efficiency of micro-crack, to reduce
The yield of display panel.
Summary of the invention
This application provides a kind of display panel, display device and crack detecting method, the inspection to micro-crack can be improved
Efficiency is surveyed, to improve the yield of display panel.
In a first aspect, the display panel includes substrate this application provides a kind of display panel, the substrate includes aobvious
Show region and non-display area, the display panel further include: crack detection line and detection sub-circuit；
The crack detection line is located in the non-display area, and part surrounds the display area, the crackle inspection
One end of survey line is connect with first input end；
The detection sub-circuit, be located at the non-display area in, respectively with the crack detection line, the second input terminal and
The connection of first output end, under the control of the signal of the crack detection line, the first output end of Xiang Suoshu provides described the
The signal of two input terminals whether there is crackle to detect the display panel according to the output signal of first output end.
Optionally, the detection sub-circuit includes: N number of transistor；
Wherein, the control electrode of N number of transistor is connect with the crack detection line, the first pole of first transistor and institute
The connection of the second input terminal is stated, the second pole of (i-1)-th transistor is connect with the first pole of i-th of transistor, n-th transistor
Second pole is connect with first output end, wherein 1 < i≤N.
Optionally, the display panel further include: positioned at the first switching element of non-display area；
The crack detection line is connect by the first switching element with the first input end, the first switch member
Part is also connect with control signal end, for providing the letter of first input end to crack detection line under the control of control signal end
Number.
Optionally, the first switching element is transistor；
The control electrode of the first switching element is connect with control signal end, and the first pole is connect with crack detection line,
Second pole is connect with first input end.
Optionally, the display panel further include: positioned at the second switch element of non-display area；
The detection sub-circuit is connect by the second switch element with second input terminal, the second switch member
Part is also connect with control signal end, for providing the letter of the second input terminal to detection sub-circuit under the control of control signal end
Number.
Optionally, the second switch element is transistor；
The control electrode of the second switch element is connect with control signal end, first in the first pole and detection sub-circuit
First pole of a transistor connects, and the second pole is connect with the second input terminal.
Optionally, the display panel further include: flexible circuit board and multiple columns of data lines；
One of first output end and flexible circuit board, external detection equipment or data line are connect.
Optionally, the display panel further include: thin film transistor (TFT) array on the substrate is set；
The thin film transistor (TFT) array is formed with the transistor for being located at non-display area using same process, the crackle inspection
Any one layer of same layer on survey line and the substrate is arranged.
Second aspect, the embodiment of the present application also provide a kind of display device, comprising: above-mentioned display panel.
The third aspect, the embodiment of the present application also provide a kind of crack detecting method, are applied in above-mentioned display panel, described
Method includes:
Signal is provided to crack detection line by first input end；
Under the control of the signal of crack detection line, the signal of the second input terminal is provided to the first output end；
Detecting the display panel according to the output signal of the first output end whether there is crackle.
Optionally, the method also includes:
Control signal is provided to first switching element and second switch element by control signal end, first switch is connected
Element and second switch element.
The application provides a kind of display panel, display device and crack detecting method, wherein and display panel includes: substrate,
Substrate includes display area and non-display area, display panel further include: crack detection line and detection sub-circuit；Crack detection
Line is located in non-display area, and part surrounds display area, and one end of crack detection line is connect with first input end；Detection
Sub-circuit is located in non-display area, connect respectively with crack detection line, the second input terminal and the first output end, for splitting
Under the control of the signal of line detection line, the signal of the second input terminal is provided to the first output end, according to the defeated of the first output end
Signal detection display panel whether there is crackle out.The application can be improved pair by setting crack detection line and detection sub-circuit
The detection efficiency of micro-crack, to improve the yield of display panel.
Other features and advantage will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood and implementing the application.Other advantages of the application can be by specification, claims
And scheme described in attached drawing is achieved and obtained.
Detailed description of the invention
Attached drawing is used to provide the understanding to technical scheme, and constitutes part of specification, with the application's
Embodiment is used to explain the technical solution of the application together, does not constitute the limitation to technical scheme.
Fig. 1 is the structural schematic diagram one of display panel provided by the embodiments of the present application；
Fig. 2 is the structural schematic diagram two of display panel provided by the embodiments of the present application；
Fig. 3 is the structural schematic diagram three of display panel provided by the embodiments of the present application；
Fig. 4 is the structural schematic diagram four of display panel provided by the embodiments of the present application；
Fig. 5 A is the side view one of display panel provided by the embodiments of the present application；
Fig. 5 B is the side view two of display panel provided by the embodiments of the present application；
Fig. 5 C is the side view three of display panel provided by the embodiments of the present application；
Fig. 6 is the equivalent circuit diagram of display panel provided by the embodiments of the present application；
Fig. 7 is the flow chart of crack detecting method provided by the embodiments of the present application.
Specific embodiment
This application describes multiple embodiments, but the description is exemplary, rather than restrictive, and for this
It is readily apparent that can have more in the range of embodiments described herein includes for the those of ordinary skill in field
More embodiments and implementation.Although many possible feature combinations are shown in the attached drawings, and in a specific embodiment
It is discussed, but many other combinations of disclosed feature are also possible.Unless the feelings specially limited
Other than condition, any feature or element of any embodiment can be with any other features or element knot in any other embodiment
It closes and uses, or any other feature or the element in any other embodiment can be substituted.
The application includes and contemplates the combination with feature known to persons of ordinary skill in the art and element.The application is
It can also combine with any general characteristics or element through disclosed embodiment, feature and element, be defined by the claims with being formed
Unique scheme of the invention.Any feature or element of any embodiment can also be with features or member from other scheme of the invention
Part combination, to form the unique scheme of the invention that another is defined by the claims.It will thus be appreciated that showing in this application
Out and/or any feature of discussion can be realized individually or in any suitable combination.Therefore, in addition to according to appended right
It is required that and its other than the limitation done of equivalent replacement, embodiment is not limited.Furthermore, it is possible in the guarantor of appended claims
It carry out various modifications and changes in shield range.
In addition, method and/or process may be rendered as spy by specification when describing representative embodiment
Fixed step sequence.However, in the degree of this method or process independent of the particular order of step described herein, this method
Or process should not necessarily be limited by the step of particular order.As one of ordinary skill in the art will appreciate, other steps is suitable
Sequence is also possible.Therefore, the particular order of step described in specification is not necessarily to be construed as limitations on claims.This
Outside, the claim for this method and/or process should not necessarily be limited by the step of executing them in the order written, art technology
Personnel are it can be readily appreciated that these can sequentially change, and still remain in the spirit and scope of the embodiment of the present application.
Unless otherwise defined, the embodiment of the present application discloses the technical term used or scientific term should be institute of the present invention
The ordinary meaning that personage in category field with general technical ability is understood." first ", " second " used in the embodiment of the present application
And similar word is not offered as any sequence, quantity or importance, and be used only to distinguish different component parts.
The similar word such as " comprising " or "comprising", which means to occur element or object before the word, to be covered to appear in and arranges behind the word
The element of act perhaps object and its equivalent and be not excluded for other elements or object.The similar word such as " connection " or " connected "
Language is not limited to physics or mechanical connection, but may include electrical connection, either direct or indirect
's."upper", "lower", "left", "right" etc. are only used for indicating relative positional relationship, when the absolute position for the object being described changes
Afterwards, then the relative positional relationship may also correspondingly change.
It will be understood by those skilled in the art that all transistors used in the examples of the application all can be film crystal
Pipe or field-effect tube or the identical device of other characteristics.Preferably, thin film transistor (TFT) used in the embodiment of the present application can be
Oxide semi conductor transistor.Since the source electrode of the transistor used here, drain electrode are symmetrical, so its source electrode, drain electrode can
To exchange.In the embodiment of the present application, to distinguish the two poles of the earth of transistor in addition to grid, one of electrode is known as first
Pole, another electrode are known as the second pole, and first extremely can be source electrode or drain electrode, and second extremely can be drain electrode or source electrode, in addition, will
The grid of transistor is known as control electrode.
Embodiment one
Fig. 1 is the structural schematic diagram one of display panel provided by the embodiments of the present application, as shown in Figure 1, provided by the present application
Display panel includes substrate (not shown), and substrate includes display area AA and non-display area AA ', and display panel also wraps
It includes: crack detection line L and detection sub-circuit.
In the present embodiment, crack detection line L is located in non-display area AA ', and part surrounds display area AA, crackle
One end of detection line L is connect with first input end INPUT1；Detect sub-circuit, be located at non-display area AA ' in, respectively with crackle
Detection line L, the second input terminal INPUT2 and the first output end OUT1 connection, under the control of the signal of crack detection line L,
The signal of the second input terminal INPUT2 is provided to the first output end OUT1, to detect according to the output signal of the first output end OUT1
Display panel whether there is crackle.
Optionally, substrate can be rigid substrate or flexible substrate, wherein rigid substrate can be but be not limited to glass,
One of metal foil is a variety of；Flexible substrate can be but be not limited to polyethylene terephthalate, terephthalic acid (TPA)
Glycol ester, polyether-ether-ketone, polystyrene, polycarbonate, poly- aryl acid esters, polyarylate, polyimides, polyvinyl chloride, poly- second
One of alkene, textile fabric are a variety of.
Optionally, in order to guarantee the accuracy of crack detection, crack detection line L in the embodiment of the present application with a thickness of
2000~3000 angstroms.
Optionally, in order to improve the accuracy of crack detection, the making material of the crack detection line L in the embodiment of the present application
Can also be using other ductility not as good as molybdenum including molybdenum or crack detection line, and conductive making material, the application are real
It applies example and this is not limited in any way.
Optionally, the other end of crack detection line L can be connect with second output terminal OUT2, according to second output terminal
The output signal of OUT2 detects crackle, it should be noted that the efficiency of the output signal detection micro-crack of second output terminal OUT2
It is lower.
Optionally, the input signal of first input end INPUT1 is low level direct current signal, the second input terminal INPUT2's
Input signal is high level direct current signal, alternatively, the input signal of first input end INPUT1 is high level direct current signal, second
The input signal of input terminal INPUT2 is low level direct current signal, the letter of first input end INPUT1 and the second input terminal INPUT2
In the presence of the pressure difference that can drive detection sub-circuit work between number, the embodiment of the present application is not limited in any way this.
It is understood that the function for the second input terminal INPUT2 and the first output end OUT1 being connect with detection sub-circuit
It can integrate and be realized in an element, when being integrated in an element, that is to say, that this element both can be to detection
Circuit input signal can also receive the output of detection sub-circuit, and the application is to separate two functions two ports respectively
Description.
Display panel provided by the embodiments of the present application further include: flexible circuit board and multiple columns of data lines (not shown).
Wherein, flexible circuit board is located at non-display area, and multiple columns of data lines are located at display area.
Wherein, one of the first output end OUT1 and flexible circuit board, external detection equipment or data line are connect,
The output signal of the first output end OUT1 is analyzed by flexible circuit board or external detection equipment to detect display panel
Display panel is detected with the presence or absence of crackle with the presence or absence of crackle, or by content shown by display panel, and the application is real
It applies example and this is not limited in any way.
Optionally, second output terminal OUT2 can also be connect with flexible circuit board or external detection equipment, and the application is real
It applies example and this is not limited in any way.
Display panel provided by the present application includes: substrate, and substrate includes display area and non-display area, and display panel is also
It include: crack detection line and detection sub-circuit；Crack detection line is located in non-display area, and part surrounds display area, splits
One end of line detection line is connect with first input end；Detect sub-circuit, be located at non-display area in, respectively with crack detection line,
Second input terminal and the connection of the first output end provide the to the first output end under the control of the signal of crack detection line
The signal of two input terminals whether there is crackle to detect display panel according to the output signal of the first output end.The application passes through
Crack detection line, which is arranged, and detects sub-circuit can be improved detection efficiency to micro-crack, to improve the yield of display panel.
Optionally, Fig. 2 is the structural schematic diagram two of display panel provided by the embodiments of the present application, as shown in Fig. 2, the application
The detection sub-circuit in display panel that embodiment provides includes: N number of transistor T1~TN.
In the present embodiment, the control electrode of N number of transistor T1~TN is connect with crack detection line L, first transistor T1's
First pole is connect with the second input terminal INPUT2, the first pole of the second pole of (i-1)-th transistor Ti-1 and i-th of transistor Ti
Connection, the second pole of n-th transistor TN are connect with the first output end OUT1, wherein 1 < i≤N.
Optionally, the quantity of N can be multiple, and the embodiment of the present application is not limited in any way this, it should be noted that figure
2 are illustrated by taking N=8 as an example.
In the present embodiment, the type of transistor T1~TN is identical, can be brilliant for N-type TFT or p-type film
Body pipe can unify process flow, can reduce manufacturing process, help to improve the yield of product.Work as first input end
INPUT1 can be low level direct current signal, when the signal of the second input terminal INPUT2 input is high level direct current signal, crystal
Pipe T1~TN is P-type TFT, and first input end INPUT1 can be high level direct current signal, the second input terminal
When the signal of INPUT2 input is low level direct current signal, transistor T1~TN is P-type TFT.In addition, it is contemplated that
The leakage current of low-temperature polysilicon film transistor is smaller, and therefore, preferably all transistors of the embodiment of the present application are low temperature polycrystalline silicon
Thin film transistor (TFT), thin film transistor (TFT) specifically can choose the thin film transistor (TFT) of bottom grating structure or the film crystal of top gate structure
Pipe, as long as can be realized switching function.
Optionally, Fig. 3 is the structural schematic diagram three of display panel provided by the embodiments of the present application, and the embodiment of the present application provides
Display panel further include: positioned at the first switching element of non-display area；Crack detection line L passes through first switching element and the
One input terminal INPUT1 connection, first switching element is also connect with control signal end SW, for the control in control signal end SW
Under, the signal of first input end INPUT1 is provided to crack detection line L.
Optionally, as shown in figure 3, display panel provided by the embodiments of the present application further include: positioned at the of non-display area
Two switch elements；Detection sub-circuit is connect by second switch element with the second input terminal INPUT2, second switch element, also with
Control signal end SW connection, for providing the second input terminal INPUT2 to detection sub-circuit under the control of control signal end SW
Signal.
It should be noted that the embodiment of the present application is opened by the setting first switching element in display panel and/or second
Element is closed, other working stages for interfering other display panels in crack detection can be prevented, controlled by control signal end SW
First switching element processed and/or second switch element are not needing crack detection Shi Buxiang crack detection line L or detection son electricity
Road provides signal, and then does not influence other operating modes of display panel.
Optionally, Fig. 4 is the structural schematic diagram four of display panel provided by the embodiments of the present application, as shown in figure 4, the application
First switching element in embodiment is transistor M1, and the control electrode of transistor M1 is connect with control signal end SW, the first pole
It is connect with crack detection line L, the second pole is connect with first input end INPUT1.
Optionally, as shown in figure 4, the second switch element in the embodiment of the present application is transistor M2, the control of transistor M2
Pole processed is connect with control signal end SW, and the first pole is connect with the first pole of first transistor T1 in detection sub-circuit,
Second pole is connect with the second input terminal INPUT2.
It should be noted that first switching element can only be arranged in the embodiment of the present application or second switch is only arranged
Element, or first switching element and second switch element are set simultaneously, when first switching element and second switch are arranged simultaneously
When element, transistor M1 is identical with the transistor types of transistor M2, can be N-type TFT or p-type film crystal
Pipe, can unify process flow, can reduce manufacturing process, help to improve the yield of product.
Optionally, transistor M1 and the transistor types of transistor T1~TN may be the same or different, it is preferable that
In order to simplify manufacture craft, transistor M1 and transistor M2 are identical as the transistor types of transistor T1~TN, and the application is implemented
Example is not limited in any way this.
Fig. 5 A is the side view one of display panel provided by the embodiments of the present application, and Fig. 5 B is provided by the embodiments of the present application aobvious
Showing the side view two of panel, Fig. 5 C is the side view three of display panel provided by the embodiments of the present application, as shown in Fig. 5 A~5C, this
Application embodiment provide display panel include: substrate 10, thin film transistor (TFT) array 20, OLED luminescent device 30, encapsulated layer 40,
Barrier layer 50 and transistor 60, wherein thin film transistor (TFT) array 20 and OLED luminescent device 30 are located at the display area of substrate 10
AA, barrier layer 50 and transistor 60 are located at the non-display area AA ' of substrate 10.
In the present embodiment, transistor 60 is transistor T1~TN, M1 and M2, and the transistor M in the embodiment of the present application is located at
Non-display area AA ', as an implementation, the orthographic projection covering transistor 60 of barrier layer 50 on the substrate 10 is in substrate 10
On orthographic projection, as another embodiment, the orthographic projection of transistor M on the substrate 10 is located at barrier layer 50 on the substrate 10
Orthographic projection and thin film transistor (TFT) array 20 orthographic projection on the substrate 10 between.
In the present embodiment, in order to simplify manufacture craft, transistor 60 and thin film transistor (TFT) array 20 use same process shape
At.Wherein, same process includes the techniques such as photoresist coating, exposure, development, etching and photoresist lift off, and the application is implemented
Example is not limited in any way this.
It should be noted that the quantity on barrier layer can be multiple, Fig. 5 A~5C is illustrated by taking two barrier layers as an example
, the orthographic projection of transistor 60 on the substrate 10 is covered by the orthographic projection of one of barrier layer on the substrate 10, Fig. 5 A~5B
It is to be carried out so that the orthographic projection of transistor 60 on the substrate 10 is covered by the orthographic projection of one of barrier layer on the substrate 10 as an example
Illustrate, Fig. 5 C is the orthographic projection being located at the orthographic projection of transistor 60 on the substrate 10 on barrier layer 50 on the substrate 10 and thin
It is illustrated between the orthographic projection of film transistor array 20 on the substrate 10, the embodiment of the present application does not make any limit to this
It is fixed.
Optionally, according to the needs of detection, crack detection line L is arranged with any one layer of same layer on substrate 10, such as
Anode, barrier layer or the encapsulated layer of OLED light emitting device layer, the embodiment of the present application are not limited in any way this.
Fig. 6 is that the equivalent circuit diagram of display panel provided by the embodiments of the present application in conjunction with Fig. 6 is P with transistor T1~TN
It is illustrated for transistor npn npn, the technical side of the embodiment of the present application is further illustrated below by the course of work of crack detection
Case.
Control signal end SW provides the control signal of conducting transistor M1 and transistor M2, and transistor M1 and transistor M2 are led
Logical, the signal of first input end INPUT1 inputs crack detection line L, and the signal of the second input terminal INPUT2 is input to transistor T1
In~TN, when crack detection line L is normal, at this point, the line resistance of crack detection line is smaller, the gate source voltage of transistor T1~TN is poor
It is negative, and gate source voltage difference is smaller, at this point, transistor T1~TN is fully opened, i.e., when crack detection line L is unbroken,
The total impedance for detecting sub-circuit is smaller.
Since resistance R of the transistor when linear zone works meets:Transistor
Resistance R in saturation region operation meets:
Wherein, VDSPoor, the V for the drain-source voltage of transistorGSPoor, the V for the gate source voltage of transistorthFor the threshold value of transistor
Voltage, W are the width of the channel of transistor, and L is the length of the channel of transistor, and μ is a constant.
As shown from the above formula, the increased degree of total impedance for detecting sub-circuit will depend on pressure drop size and positioned at splitting
The quantity of transistor after line detection line breaking part.
Display panel provided by the embodiments of the present application will lead to crackle inspection after micro-fracture occurs for the crack detection somewhere line L
The line of survey line L, which hinders, to be improved, and the signal of first input end INPUT1 leads to position by that can have certain pressure drop at micro-fracture
The gate source voltage difference of transistor after herein increases, and increases the resistance of transistor, such as above process, in crack detection line
Micro-crack caused by line resistance improve be detected sub-circuit amplify step by step, eventually by be located at micro-crack at after multiple transistors
Amplification is exported into the first output end.Display panel provided by the embodiments of the present application is not needing to increase too many new signal and line
It under the premise of road, using the characteristic of transistor, is exaggerated by micro-crack bring impedance, and then improves the detection effect of micro-crack
Rate improves the yield of display panel.
It should be noted that according to detection demand, thus it is possible to vary the material of the size of transistor, quantity and crack detection line
Material, size, shape, to optimize the detection threshold value of hallrcuts.
Embodiment two
Inventive concept based on the above embodiment, the embodiment of the present application also provide a kind of crack detecting method, are applied to real
In the display panel for applying the offer of example one, Fig. 7 is the flow chart of crack detecting method provided by the embodiments of the present application, as shown in fig. 7,
Crack detecting method provided by the embodiments of the present application specifically includes the following steps:
Step 100 provides signal to crack detection line by first input end.
Step 200, under the control of the signal of crack detection line, to the first output end provide the second input terminal signal.
Wherein, step 100 and step 200 may be performed simultaneously, and can also execute respectively, the embodiment of the present application does not make this
Any restriction.
Step 300 detects display panel with the presence or absence of crackle according to the output signal of the first output end.
Specifically, step 300 analyzes the output signal of the first output end by flexible circuit board or external detection equipment, or
Person is according to can no there are crackles on the display content detection display panel of display panel.
Wherein, crack detecting method provided by the embodiments of the present application is applied in the display panel that embodiment one provides,
Realization principle is similar with effect is realized, details are not described herein.
Optionally, crack detecting method provided by the embodiments of the present application is before step 100, further includes: is believed by control
It number holds to first switching element and second switch element and control signal is provided, first switching element and second switch member is connected
Part.
It should be noted that the embodiment of the present application is mentioned by control signal end to first switching element and second switch element
For controlling signal, other working stages for interfering other display panels in crack detection can be prevented, control signal end is passed through
First switching element and second switch element are controlled, crack detection Shi Buxiang crack detection line or detection sub-circuit are not being needed
Signal is provided, and then does not influence other operating modes of display panel.
Embodiment three
Inventive concept based on the above embodiment, the embodiment of the present application also provide a kind of display device, comprising: display surface
Plate.
Wherein, display panel is the display panel that embodiment one provides, and realization principle is similar with effect is realized, herein not
It repeats again.
Specifically, the display device can be with are as follows: mobile phone, tablet computer, television set, display, laptop, digital phase
Any products or components having a display function such as frame, navigator.For other essential composition portions of the display device
Dividing is it will be apparent to an ordinarily skilled person in the art that having, and this will not be repeated here, also should not be used as to limit of the invention
System.
The embodiment of the present application attached drawing is pertained only to the invention relates to the structure arrived, and other structures, which can refer to, usually to be set
Meter.
For clarity, in the attached drawing of embodiment for describing the present invention, the thickness and size of layer or micro-structure
It is amplified.It is appreciated that ought such as layer, film, region or substrate etc element be referred to as be located at another element "above" or "below"
When, which " direct " can be located at "above" or "below" another element, or may exist intermediary element.
Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and use
Embodiment is not intended to limit the invention.Technical staff in any fields of the present invention is taken off not departing from the present invention
Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (11)
1. a kind of display panel, which is characterized in that the display panel includes substrate, and the substrate includes display area and non-aobvious
Show region, the display panel further include: crack detection line and detection sub-circuit；
The crack detection line is located in the non-display area, and part surrounds the display area, the crack detection line
One end connect with first input end；
The detection sub-circuit, be located at the non-display area in, respectively with the crack detection line, the second input terminal and first
Output end connection, under the control of the signal of the crack detection line, it is defeated that the first output end of Xiang Suoshu provides described second
Enter the signal at end, whether there is crackle to detect the display panel according to the output signal of first output end.
2. display panel according to claim 1, which is characterized in that the detection sub-circuit includes: N number of transistor；
Wherein, the control electrode of N number of transistor is connect with the crack detection line, the first pole of first transistor and described the
The connection of two input terminals, the second pole of (i-1)-th transistor are connect with the first pole of i-th of transistor, and the second of n-th transistor
Pole is connect with first output end, wherein 1 < i≤N.
3. display panel according to claim 2, which is characterized in that the display panel further include: be located at non-display area
The first switching element in domain；
The crack detection line is connect by the first switching element with the first input end, the first switching element,
It is also connect with control signal end, for providing the signal of first input end to crack detection line under the control of control signal end.
4. display panel according to claim 3, which is characterized in that the first switching element is transistor；
The control electrode of the first switching element is connect with control signal end, and the first pole is connect with crack detection line, and second
Pole is connect with first input end.
5. according to the described in any item display panels of claim 2~4, which is characterized in that the display panel further include: be located at
The second switch element of non-display area；
The detection sub-circuit is connect by the second switch element with second input terminal, the second switch element,
It is also connect with control signal end, for providing the signal of the second input terminal to detection sub-circuit under the control of control signal end.
6. display panel according to claim 5, which is characterized in that the second switch element is transistor；
The control electrode of the second switch element is connect with control signal end, first crystalline substance in the first pole and detection sub-circuit
First pole of body pipe connects, and the second pole is connect with the second input terminal.
7. display panel according to claim 1, which is characterized in that the display panel further include: flexible circuit board and
Multiple columns of data lines；
One of first output end and flexible circuit board, external detection equipment or data line are connect.
8. display panel according to claim 6, which is characterized in that the display panel further include: be arranged in the base
Thin film transistor (TFT) array on plate；
The thin film transistor (TFT) array is formed with the transistor for being located at non-display area using same process, the crack detection line
It is arranged with any one layer of same layer on the substrate.
9. a kind of display device characterized by comprising display panel as described in any one of claims 1 to 8.
10. a kind of crack detecting method, which is characterized in that be applied to display panel as described in any one of claims 1 to 8
In, which comprises
Signal is provided to crack detection line by first input end；
Under the control of the signal of crack detection line, the signal of the second input terminal is provided to the first output end；
Detecting the display panel according to the output signal of the first output end whether there is crackle.
11. according to the method described in claim 10, it is characterized in that, the method also includes:
Control signal is provided to first switching element and second switch element by control signal end, first switching element is connected
With second switch element.
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