CN108597424A - a kind of display panel, display device and detection method - Google Patents
a kind of display panel, display device and detection method Download PDFInfo
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- CN108597424A CN108597424A CN201810016374.0A CN201810016374A CN108597424A CN 108597424 A CN108597424 A CN 108597424A CN 201810016374 A CN201810016374 A CN 201810016374A CN 108597424 A CN108597424 A CN 108597424A
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- switch
- grid
- display panel
- detection sensor
- drive element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
A kind of display panel of offer of the embodiment of the present invention, display device and detection method.In the display panel, the control terminal of first switch and the second switch is coupled with signal end, the first end of each first switch is coupled with the first output end of corresponding press detection sensor, the first end of each second switch is coupled with the second output terminal of corresponding press detection sensor, the first end of first sub- drive element of the grid and corresponding first switch couples, the grid coupling on the second end of first switch row corresponding with the first sub- drive element of the grid；Second sub- drive element of the grid is coupled with the first end of corresponding second switch, grid on the second end of second switch row corresponding with the second sub- drive element of the grid couples, it can be determined according to the case where concealed wire with the presence or absence of the press detection sensor that open circuit occurs in display panel, to be conducive to improve the detection efficiency of display panel by one-time detection after using above-mentioned design.
Description
Technical field
The present invention relates to a kind of display technology field more particularly to display panel, display device and detection methods.
Background technology
Before display panel completes, need to be detected the circuit in display panel, such as to pressure detecting
Sensor is detected, and when being detected to press detection sensor, needs the input voltage at test point, then uses ten thousand
Which the output end of each press detection sensor is measured one by one with table or oscillograph, press detection sensor judged
There is open circuit, but above-mentioned detection method detection efficiency is relatively low.
Invention content
A kind of display panel of offer of the embodiment of the present invention, display device and detection method, it is in the prior art for solving
The relatively low problem of detection method detection efficiency.
In a first aspect, the embodiment of the present invention provides a kind of display panel, the display panel includes display area and non-aobvious
Show that region, the display panel further include：
Multiple press detection sensors, each press detection sensor include first input end, the second input terminal, the
One output end and second output terminal, the first input end are electrically connected with the first detection terminal, second input terminal and second
Detection terminal is electrically connected；
The multiple press detection sensor is located at the non-display area, and the multiple press detection sensor includes more
A first pressure detection sensor and multiple second pressure detection sensors, the multiple first pressure detection sensor and described
Second pressure detection sensor is located at the opposite both sides of the non-display area；
The control terminal and signal end of multiple first switches and multiple second switches, the first switch and the second switch
The first end of coupling, each first switch is coupled with the first output end of the corresponding press detection sensor, each
The first end of the second switch is coupled with the second output terminal of the corresponding press detection sensor, and the multiple first opens
It closes and the multiple second switch is located at the non-display area, the voltage of the control terminal of the first switch is higher than described first
It is connected when the voltage of the first end of switch, the voltage of the control terminal of the second switch is higher than the first end of the second switch
It is connected when voltage；
Multiple drive element of the grid, the multiple drive element of the grid are located at the non-display area, the multiple grid
Driving unit includes first grid driving unit and second grid driving unit, the first grid driving unit and described first
Press detection sensor is located at homonymy, and the second grid driving unit is located at homonymy with the second pressure detection sensor,
The multiple first grid driving unit is arranged along column direction, the multiple first grid driving unit cascade electrical connection, described
Multiple second grid driving units are arranged along the column direction, the multiple second grid driving unit cascade electrical connection, in institute
It states on column direction, the multiple first grid driving unit and the multiple second grid driving unit are arranged alternately；
The multiple first grid driving unit includes the first sub- drive element of the grid and the second sub- drive element of the grid, institute
It states the first sub- drive element of the grid to couple with the first end of the corresponding first switch, the second end of the first switch and institute
The grid that the first sub- drive element of the grid corresponds on row is stated to couple；The second sub- drive element of the grid and corresponding described second
The first end of switch couples, the grid coupling on the second end of second switch row corresponding with the described second sub- drive element of the grid
It connects；
Multiple data lines, every data line and one end of the Source and drain metal level in respective column couple.
Second aspect, an embodiment of the present invention provides a kind of display devices, including above-mentioned display panel.
The third aspect, an embodiment of the present invention provides a kind of detection method, the method is applied to such as claim 1 to 7
Any one of described in display panel, in detection-phase, first detection terminal inputs the first electric signal, second detection
Terminal input grounding signal, the signal end are used to provide the second telecommunications of the conducting first switch and the second switch
Number, the corresponding voltage of first electric signal is U1, and the corresponding voltage of second electric signal is U2, U1/2 ＜ U2 ＜ U1, institute
The method of stating includes：
In detection-phase, the signal end exports second electric signal, the first detection terminal output described first
Electric signal, multiple drive element of the grid export scanning signal, source and drain gold of a plurality of data line in respective column
Belong to one end outputting data signals of layer.
Any one technical solution in above-mentioned technical proposal has the advantages that：
In embodiments of the present invention, after using the design such as first aspect, when being detected, signal end output second
Electric signal, first switch and the second switch conducting, after the first detection terminal exports the first electric signal, if pressure detecting senses
After open circuit occurs for device, the first output end ground connection, to drag down the voltage that corresponding drive element of the grid exports scanning signal, Jin Erwu
Method makes the pixel light emission on corresponding row；Alternatively, the voltage of the first output end output is higher than the voltage of first switch control terminal, to
First switch is set to end so that corresponding drive element of the grid output scanning signal can not be transferred to the grid on corresponding row, in turn
It can not make the pixel light emission on corresponding row；Alternatively, second output terminal is grounded, to drag down corresponding drive element of the grid output scanning
The voltage of signal, and then the pixel light emission on corresponding row can not be made；Again alternatively, the voltage of second output terminal output is opened higher than second
The voltage for closing control terminal, to make second switch end so that corresponding drive element of the grid output scanning signal can not be transferred to
Grid on corresponding row, and then the pixel light emission on corresponding row can not be made, further, open circuit occurs in press detection sensor
Afterwards, when being detected, the pixel on corresponding line can not shine, so that concealed wire occurs in display panel, so as to basis
Whether concealed wire is occurred on display panel to judge whether press detection sensor occurs open circuit, and can also be according to the position of concealed wire
It sets and judges that open circuit occurs for which press detection sensor, therefore after using above-mentioned design, one-time detection can be passed through
It determines with the presence or absence of the press detection sensor that open circuit occurs in display panel, to be conducive to improve the detection of display panel
Efficiency.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of schematic top plan view of display panel provided in an embodiment of the present invention；
Fig. 2 is a kind of enlarged diagram in dotted line frame 8 in Fig. 1；
Fig. 3 is a kind of schematic cross-section of display panel provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram that a kind of pressure provided in an embodiment of the present invention examines sensor；
Fig. 5 is a kind of display schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 6 is another enlarged diagram in dotted line frame 8 in Fig. 1；
Fig. 7 is the schematic top plan view of another display panel provided in an embodiment of the present invention；
Fig. 8 is a kind of partial top schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 9 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
The term used in embodiments of the present invention is the purpose only merely for description specific embodiment, is not intended to be limiting
The present invention.In the embodiment of the present invention and "an" of singulative used in the attached claims, " described " and "the"
It is also intended to including most forms, unless context clearly shows that other meanings.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation of description affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate：Individualism A, exists simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, it is a kind of relationship of "or" to typically represent forward-backward correlation object.
It should be noted that the nouns of locality such as "upper", "lower", "left", "right" described in the embodiment of the present invention are with attached drawing
Shown in angle come what is be described, should not be construed as the restriction to the embodiment of the present invention.In addition within a context, it is also necessary to manage
Solution can not only be formed directly into another when mentioning an element and being formed on "above" or "below" another element
Either "lower" can also be indirectly formed by intermediary element in another element "upper" or "lower" for a element "upper".
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 is a kind of schematic top plan view of display panel provided in an embodiment of the present invention, and Fig. 2 is in dotted line frame 8 in Fig. 1
A kind of enlarged diagram, as depicted in figs. 1 and 2, display panel include display area 1 and non-display area 2, and display panel also wraps
It includes：Multiple press detection sensors 3, each press detection sensor 3 include first input end 31, the second input terminal 32, first
Output end 33 and second output terminal 34, first input end 31 are electrically connected with the first detection terminal 41, the second input terminal 32 and second
Detection terminal 42 is electrically connected；Multiple press detection sensors 3 are located at non-display area 2, and multiple press detection sensors 3 include more
A first pressure detection sensor 301 and multiple second pressure detection sensors 302, multiple first pressure detection sensors 301
It is located at the opposite both sides of non-display area 2 with second pressure detection sensor 302；Multiple first switches 51 and multiple second switches
52, control terminal and the signal end 6 of first switch 51 and second switch 52 couple, the first end of each first switch 51 with it is corresponding
First output end 33 of press detection sensor 3 couples, and the first end of each second switch 52 is sensed with corresponding pressure detecting
The second output terminal 34 of device 3 couples, and multiple first switches 51 and multiple second switches 52 are located at non-display area 2.
Specifically, when voltage of the voltage of the control terminal of first switch 51 higher than the first end of first switch 51, first
Switch 51 is connected；When voltage of the voltage of the control terminal of second switch 52 higher than the first end of second switch 52, second switch
52 conductings；Multiple drive element of the grid 7, multiple drive element of the grid 7 are located at non-display area 2, and multiple drive element of the grid 7 wrap
First grid driving unit 71 and second grid driving unit 72 are included, first grid driving unit 71 is sensed with first pressure detection
Device 301 is located at homonymy, and second grid driving unit 72 is located at homonymy, multiple first grids with second pressure detection sensor 302
Driving unit 71 is arranged along column direction, the multiple cascade of first grid driving unit 71 electrical connections, multiple second grid driving units
72 arrange along column direction, and the multiple cascade of second grid driving unit 72 electrical connections, in a column direction, multiple first grid drivings are single
Member 71 and multiple second grid driving units 72 are arranged alternately；First grid driving unit 71 and second grid driving unit 72 are all
It respectively includes the first sub- drive element of the grid 711 and the second sub- drive element of the grid 712, each drive element of the grid 7 is right respectively
The grid on a line sub-pixel unit, the first sub- drive element of the grid 711 is answered to be coupled with the first end of corresponding first switch 51,
Grid coupling on the second end of first switch 51 row corresponding with the first sub- drive element of the grid 711；Second sub- gate driving list
Member 712 is coupled with the first end of corresponding second switch 52, the second end of second switch 52 and the second sub- drive element of the grid 712
Grid coupling on corresponding row；Multiple data lines 9 are coupled per data line 9 with one end of the Source and drain metal level in respective column.
Specifically, as depicted in figs. 1 and 2, due to multiple press detection sensors 3, multiple first switches 51, multiple second
Switch 52 and multiple drive element of the grid 7 are all located at non-display area 2, and then can reduce the shadow to display panel light transmittance
It rings, is conducive to the display effect for improving display panel.
Fig. 3 is a kind of schematic cross-section of display panel provided in an embodiment of the present invention, as shown in Figure 3, display panel packet
Include underlay substrate 11, the semiconductor layer 12 on underlay substrate 11, positioned at grid of the semiconductor layer 12 far from underlay substrate side
Pole insulating layer 13, positioned at grid 14 of the gate insulating layer 13 far from 11 side of underlay substrate, be located at grid 14 far from underlay substrate
The interlayer insulating film 15 of 11 sides, positioned at Source and drain metal level 16 of the interlayer insulating film 15 far from 11 side of underlay substrate, wherein source
Leak metal layer 16 by being electrically connected with semiconductor layer 12 through two vias of gate insulating layer 13 and interlayer insulating film 15, in conjunction with
Shown in Fig. 2, the grid 14 on the second end of first switch 51 row corresponding with the first sub- drive element of the grid 711 couples；Second opens
Close the grid coupling on 52 second end row corresponding with the second sub- drive element of the grid 712；In conjunction with shown in Fig. 1, per data line 9
It is coupled with one end of the Source and drain metal level 16 in respective column.As shown in figure 3, the scanning that grid 14 is provided in drive element of the grid 7
Source and drain metal level is set to be connected under the action of signal, the data-signal that then data line 9 provides is passed from one end of Source and drain metal level 16
It is directed at the other end, so that display panel shows image.
As shown in Figure 1, multiple press detection sensors 3 are evenly distributed in the opposite both sides of non-display area 2, i.e., first
Press detection sensor 301 is arranged in the side of non-display area 2, and in the side, opposite other side setting second pressure, which detects, passes
Sensor 302, since a press detection sensor 3 has certain detection range, the pressure detecting passes in the detection range
The accuracy in detection of sensor 3 is relatively high, after using above-mentioned design, multiple press detection sensors 3 can be made uniformly to divide
Cloth is around display panel, and each press detection sensor 3 is each responsible for a detection range, and then can make display surface
Accuracy in detection on plate on each position is relatively accurate, and can with the detection range of multiple press detection sensors 3
More covering display panel as possible, advantageously reduces the range of the detection blind spot region of display panel.
As shown in Figure 1, multiple drive element of the grid 7 include first grid driving unit 71 and second grid driving unit
72, first grid driving unit 71 is arranged with 301 homonymy of first pressure detection sensor, second grid driving unit 72 and second
302 homonymy of press detection sensor is arranged, also, constitutes the first grid using cascade mode between first grid driving unit 71
Pole driving circuit 701 constitutes second grid driving circuit 702 between second grid driving unit 72 using cascade mode,
When display panel is shown, first grid driving circuit 701 and second grid driving circuit 702 are capable of providing scanning signal,
So that display panel is shown.Wherein, it (is not indicated since each drive element of the grid 7 at least corresponds to a line sub-pixel unit
Go out), when multiple first grid driving units 71 and multiple second grid driving units 72 are arranged alternately design, first can be made
The arrangement mode of drive element of the grid 71 and second grid driving unit 72 is identical as the arrangement mode of sub-pixel unit row, in turn
First grid driving unit 71 and second grid driving unit 72 can be made to be correspondingly arranged nearby with corresponding sub-pixel unit row,
When so as to so that drive element of the grid 7 being connected with corresponding sub-pixel unit row, it is only necessary to carry out cross-line connection, no longer need into
The designs such as row coiling so that the connection type of drive element of the grid 7 and corresponding sub-pixel unit row is relatively easy, and have
Difficulty is connected up conducive to reducing.
As shown in dotted line frame 8 in Fig. 1 and Fig. 2, when being detected, the voltage of the control terminal of first switch 51 is higher than first
It is connected when voltage (voltage of the first output end 33) of the first end of switch 51, the voltage of the control terminal of second switch 52 is higher than the
It is connected when voltage (voltage of second output terminal 34) of the first end of two switches 52, therefore the first sub- drive element of the grid 711 exists
When transmitting signal to corresponding sub-pixel cell row by first switch 51, need to keep first switch 51 in the conduction state, second
Sub- drive element of the grid 712 needs to make second switch when transmitting signal to corresponding sub-pixel cell row by second switch 52
52 is in the conduction state.
For detection circuit as shown in Figure 2, an embodiment of the present invention provides a kind of detection method, the pressure detecting in Fig. 2
The structure of sensor 3 as shown in figure 4, first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4 resistance value all
It is equal, wherein as shown in Fig. 2, the first detection terminal 41 the first electric signal of input, 42 input grounding signal of the second detection terminal,
Signal end 6 is used to provide the second electric signal of conducting first switch 51 and second switch 52, and the corresponding voltage of the first electric signal is
U1, the corresponding voltage of the second electric signal are U2, since the voltage of the control terminal of first switch 51 is higher than the first of first switch 51
It being connected when the voltage at end, the voltage of the control terminal of second switch 52 is connected when being higher than the voltage of the first end of second switch 52, because
, in order to make press detection sensor 3 after open circuit occurs, corresponding sub-pixel unit is capable not to shine, and needs to make first switch 51 for this
And/or second switch 52 ends, and just needs the control for making the voltage of the first end of first switch 51 be higher than first switch 51 at this time
The voltage at end and/or the voltage of the first end of second switch 52 are higher than the voltage of the control terminal of second switch 52, and due to pressure
Detection sensor 3 is after occurring open circuit, and the voltage of the first output end 31 and the output of second output terminal 32 is 0V or U1, and pressure is examined
Sensor 3 is surveyed when open circuit does not occur, the voltage of the first output end 31 and the output of second output terminal 32 is U1/2, therefore for reality
Present press detection sensor 3 is after occurring open circuit, and first switch 51 or second switch 52 end, in press detection sensor 3
When open circuit does not occur, first switch 51 or second switch 52 are connected, and need to make U1/2 ＜ U2 ＜ U1.
For detection circuit as shown in Figure 2, which includes：In detection-phase, signal end 6 exports the second telecommunications
Number, the first detection terminal 41 inputs the first electric signal to first input end 31, and the second detection terminal 42 is defeated to the second input terminal 32
Enter low-potential signal, multiple drive element of the grid 7 export scanning signal, Source and drain metal level of the multiple data lines 9 in respective column
One end outputting data signals.
Specifically, as shown in Fig. 2, in detection-phase, signal end 6 is the control terminal and second switch 52 of first switch 51
Control terminal provides the second electric signal, so that first switch 51 and second switch 52 are connected, the first detection terminal 41 is defeated by first
Enter end 31 and provide the first electric signal for the press detection sensor 3, so that the first output end 33 and second output terminal 34 export electricity
Signal, if open circuit, the electric signal pair that the first output end 33 and second output terminal 34 export do not occur for press detection sensor 3
The voltage value answered all is U1/2, since the voltage that the condition that first switch 51 is connected is the control terminal of first switch 51 is higher than first
The voltage of the first end of switch 51, and due to U1/2 ＜ U2, first switch 51 and second switch 52 are all in conducting at this time
State, the first sub- drive element of the grid 711 and the second sub- drive element of the grid 712 can be by the signal transmissions of output to correspondence
Sub-pixel unit row, and data line 9 provide data-signal under the action of, make corresponding sub-pixel unit shine, from
And display panel is made to show image.
Illustratively, Fig. 4 is the structural schematic diagram that a kind of pressure provided in an embodiment of the present invention examines sensor, such as Fig. 4 institutes
Show, press detection sensor 3 further includes：End to end first resistor R1, second resistance R2,3rd resistor R3 and the 4th successively
Resistance R4；Connecting pin of the first input end 31 between first resistor R1 and second resistance R2, the second input terminal 32 are third electricity
Hinder the connecting pin between R3 and the 4th resistance R4, connection of first output end 33 between first resistor R1 and 3rd resistor R3
End, connecting pin of the second output terminal 34 between second resistance R2 and the 4th resistance R4.
Specifically, the ratio of first resistor R1 and 3rd resistor R3 are equal to the ratio of second resistance R2 and the 4th resistance R4,
When display panel is by ambient pressure, touch-control display panel deforms upon, then R1, R2, R3 on the display panel is arranged
It can be deformed upon with R4, cause its resistance value to change, the ratio of first resistor R1 and 3rd resistor R3 are no longer equal to second
The ratio of resistance R2 and the 4th resistance R4 make the first output end 33 and second output terminal 34 that will export different electric signals, in turn
The pressure value size of outer bound pair display panel can be determined based on the electric signal that the first output end 33 and second output terminal 34 export.
In conjunction with Fig. 2, in detection-phase, display panel is not affected by ambient pressure, therefore the first output end 33 and second output terminal 34 export
The equal electric signal of voltage, i.e. the first output end 33 voltage value corresponding with the electric signal that second output terminal 34 exports all are U1/
2, since the condition that first switch 51 is connected is that the voltage of the control terminal of first switch 51 is higher than the first end of first switch 51
Voltage, the condition that second switch 52 is connected are the electricity that the voltage of the control terminal of second switch 52 is higher than the first end of second switch 52
Pressure, and due to U1/2 ＜ U2, first switch 51 and second switch 52 are all in conducting state, the first sub- gate driving at this time
Unit 711 and the second sub- drive element of the grid 712 can by the signal transmission of output to corresponding sub-pixel unit row, and
Under the action of the data-signal that data line 9 provides, corresponding sub-pixel unit is set to shine, to make display panel display figure
Picture.
As shown in Figure 2 and Figure 4, if open circuit occurs for press detection sensor 3, by taking open circuit occurs for first resistor R1 as an example,
After signal end 6 provides the first electric signal, first switch 51 is connected, since the second input terminal 32 is connect by the second detection terminal 42
Ground, so that the output end of the first sub- drive element of the grid 711 is also grounded, so that the first sub- drive element of the grid 711
Corresponding sub-pixel unit row can not be transferred signals to so that corresponding sub-pixel unit row can not shine, and Fig. 5 is the present invention
The display schematic diagram for a kind of display panel that embodiment provides, wherein as shown in figure 5, the in press detection sensor 3011
Open circuit occurs for one resistance R1, after open circuit occurs for the first resistor R1 of press detection sensor 301, the display effect of display panel
As shown in Figure 5.
As shown in Figure 2 and Figure 4, by taking open circuit occurs for 3rd resistor R3 as an example, after signal end 6 provides the first electric signal, the
One switch 51 is connected, due to 3rd resistor R3 open circuit so that and the electric signal of the first output end 33 output is U1, and U2 ＜ U1, by
It is the voltage that the voltage of the control terminal of first switch 51 is higher than the first end of first switch 51 in the condition that first switch 51 is connected,
Therefore in U2 ＜ U1, first switch 51 is ended, to make the first sub- drive element of the grid 711 without the corresponding sub-pixel list of normal direction
First row output signal so that corresponding sub-pixel unit row can not shine, in the 3rd resistor R3 hairs of press detection sensor 301
After raw open circuit, the display effect of display panel is as shown in Figure 5.
It should be noted that when open circuit occurs for second resistance R2, principle is identical with the principle of first resistor R1, no longer
It repeats；When open circuit occurs for the 4th resistance R4, principle is identical with the principle of 3rd resistor R3, repeats no more；Accordingly, with respect to
When open circuit occurs for two resistance R2, the related description of first resistor R1 can be referred to, it, can be with when open circuit occurs about the 4th resistance R4
With reference to the related description of 3rd resistor R3, in this not go into detail.
Further, after open circuit occurs for press detection sensor 3, when being detected, the sub-pixel list on corresponding row
Member can not shine, other sub-pixel units on display panel shine under the action of drive element of the grid 7, so that display
There is concealed wire in panel, and concrete condition can refer to shown in Fig. 5, so as to judge to press according to whether occurring concealed wire on display panel
Whether force detection sensor 3 occurs open circuit, and can also be occurred according to the position judgment of concealed wire which press detection sensor 3
Open circuit, therefore after using above-mentioned design, can be assured that out by one-time detection in display panel with the presence or absence of generation
The press detection sensor 3 of open circuit, to be conducive to improve the detection efficiency of display panel.
To sum up, the corresponding voltage of the first electric signal is U1, and the corresponding voltage of the second electric signal is U2, and U1/2 ＜ U2 ＜ U1
When, using the characteristic of 52 on or off of first switch 51 and second switch, open circuit can occur in press detection sensor 3
Afterwards, make concealed wire occur on the corresponding position of display panel, be conducive to facilitate whether detection press detection sensor 3 occurs open circuit.
Optionally, as shown in Fig. 2, first switch 51 and second switch 52 are N-type TFT.
Specifically, N-type TFT can end in the case that voltage is higher than control terminal voltage at one end, therefore first
Switch 51 and second switch 52 are N-type TFT, and drive element of the grid 7 is made when open circuit occurs for press detection sensor 3
The signal of output can not be transferred to corresponding sub-pixel cell row, judge in display panel with the presence or absence of generation open circuit to realize
The purpose of press detection sensor 3.
It should be noted that when, first switch 51 and second switch 52 are it is also an option that use other kinds of switch, herein
It is not especially limited, the purpose of the embodiment of the present invention is the first switch 51 and second when open circuit occurs for press detection sensor 3
Switch 52 ends, therefore can realize that the switch of above-mentioned function belongs to the protection domain of the embodiment of the present invention.
Optionally, as shown in figure 4, the resistance value of first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4
All equal, as shown in Figure 1, the voltage of the first electric signal is U1, the voltage of 12V ＜ U1 ＜ 16V, signal end 6 are U2,6V ＜ U2 ＜
10V。
Specifically, the conducting voltage of the sub-pixel unit in display panel is 6V-8V, as shown in figure 4, first resistor R1,
The resistance value of second resistance R2,3rd resistor R3 and the 4th resistance R4 are all equal, as shown in Figure 1, the voltage of the first electric signal is
When U1,12V ＜ U1 ＜ 16V, in the case where open circuit does not occur for press detection sensor 3, the output of the first output end 33 and second
The voltage of the electric signals of 34 output of end is 6V-8V, due to the of voltage higher than first switch 51 of the control terminal of first switch 51
It being connected when the voltage of one end, the voltage of the control terminal of second switch 52 is connected when being higher than the voltage of the first end of second switch 52,
Therefore the voltage of signal end 6 is U2,6V ＜ U2 ＜ 10V, is more than the first output end 33 in the voltage of U2 and second output terminal 34 is defeated
When the voltage of the electric signal gone out, first switch 51 and second switch 52 can be made to be connected, the first output end 33 and second output terminal
The electric signal of 34 outputs can be such that the sub-pixel unit row is connected, and in correspondence after being transferred to corresponding sub-pixel cell row
Data line 9 export data-signal under the action of, make corresponding sub-pixel unit shine, press detection sensor 3 occur
In the case of open circuit, the electrical signal voltage of the first output end 33 and/or the output of second output terminal 34 is U1, makes first switch 51
And/or second switch 52 ends, alternatively, corresponding drive element of the grid 7 is made to be grounded, which corresponds to without normal direction
Sub-pixel unit row output signal (concrete principle is described in detail above-mentioned, and in this not go into detail), and then can not make
Corresponding sub-pixel unit row conducting, so as to judge press detection sensor according to whether occurring concealed wire on display panel
Whether 3 occur open circuit, and open circuit can also occur according to the position judgment of concealed wire which press detection sensor 3, therefore
After above-mentioned design, it can be assured that out by one-time detection in display panel with the presence or absence of the pressure inspection that open circuit occurs
Sensor 3 is surveyed, to be conducive to improve the detection efficiency of display panel.
Optionally, as shown in Fig. 2, the control terminal of first switch 51 and the control terminal of second switch 52 are electrically connected same signal
End 6.
Specifically, as shown in Fig. 2, the control terminal of first switch 51 and the control terminal of second switch 52 are connecting same signal
Behind end 6, control can be carried out at the same time to first switch 51 and second switch 52 by a signal end 6, it is aobvious so as to reduce
The wiring quantity for showing panel advantageously reduces the wiring complexity of display panel, and by a signal end 6 to first switch
51 and second switch 52 be carried out at the same time control, advantageously reduce the control difficulty of first switch 51 and second switch 52.
Optionally, as shown in Fig. 2, the first signal output line and the of the first output end 33 multiplexing press detection sensor 3
The first end of one switch 51 couples；The second signal output line that second output terminal 34 is multiplexed press detection sensor 3 is opened with second
Close 52 first end coupling.
Specifically, as shown in Fig. 2, the first output end 33 be multiplexed press detection sensor 3 the first signal output line with
The first end of first switch 51 couples, and second output terminal 34 is multiplexed the second signal output line and second of press detection sensor 3
When the first end coupling of switch 52, without between the first output end 33 and first switch 51 and second output terminal 34 and the
Cabling is separately provided between two switches 52, it is possible to reduce the wiring quantity of display panel advantageously reduces the wiring of display panel
Complexity can disconnect the line between the first output end 33 and the first end of first switch 51, first is defeated upon completion of the assays
Line between outlet 33 and the first sub- drive element of the grid 711, between second output terminal 34 and the first end of second switch 52
Line and second output terminal 34 and second grid driving unit 72 between line, to make the first signal output line and
Second signal output line normally exercises its function.
Optionally, Fig. 6 is another enlarged diagram in dotted line frame 8 in Fig. 1, as shown in fig. 6, display panel further includes
Multi-strip scanning line 10, every scan line 10 are electrically connected with the grid on corresponding row.
Specifically, as shown in fig. 6, scan line 10 is used to, to corresponding sub-pixel unit row offer scanning signal, detect
It completes, and when display panel be in the display stage, signal end 6 no longer provides the letter for making first switch 51 and the conducting of second switch 52
Number, first switch 51 and second switch 52 end at this time, and drive element of the grid 7 is passed scanning signal by corresponding scan line 10
The defeated grid to corresponding sub-pixel unit row so that the sub-pixel unit row is in the conduction state, is then provided in data line 9
Data-signal under the action of make corresponding sub-pixel unit shine, to make display panel show image, due to being examined
When surveying and normally showing, scanning signal is exported using different cablings, and then in the display stage, above-mentioned design does not interfere with
The normal display of display panel.
Optionally, as shown in Figure 1, first pressure detection sensor 301 and second pressure detection sensor 302 are in column direction
On be staggered.
Specifically, first pressure detection sensor 301 is arranged in the side of non-display area 2, it is opposite in non-display area 2
The side setting second pressure detection sensor 302 answered, and first pressure detection sensor 301 and second pressure detection sensor
302 are staggered in a column direction, after using above-mentioned design, can enable the detection range of multiple press detection sensors 3
Enough covering display panels more as possible, and the overlapping area of 3 corresponding detection range of multiple press detection sensors can be reduced,
Be conducive to improve the accuracy in detection of display panel, and further increase the detection range of multiple press detection sensors 3
Area coverage, so as to further decrease display panel detection blind spot region range.
Fig. 7 is the schematic top plan view of another display panel provided in an embodiment of the present invention, as shown in fig. 7, display panel
Including multiple press detection sensors 3, multiple press detection sensors 3 are located at the opposite both sides of non-display area 2, and positioned at not
The press detection sensor of homonymy along line direction be symmetrical arranged, wherein about press detection sensor 3 operation principle and in detail
Introduction can refer to Fig. 1 to content shown in fig. 6, and in this not go into detail.
Fig. 8 is a kind of partial top schematic diagram of display panel provided in an embodiment of the present invention, as shown in figure 8, display surface
Plate includes multiple press detection sensors 3, and each press detection sensor 3 corresponds to a first switch 51 and one the respectively
Two switches 52,, first switch 51 is coupled with the grid at least two row sub-pixel units, second switch 52 and at least two rows
Grid coupling on pixel unit, wherein about press detection sensor 3 operation principle and be discussed in detail and can refer to Fig. 1 extremely
Content shown in fig. 6, in this not go into detail.
Fig. 9 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention, as shown in figure 9, the display device
Including above-mentioned display panel 100.It about the operation principle of display panel 100, is described in detail above-mentioned, herein no longer in detail
It repeats.
It should be noted that display device involved in the embodiment of the present invention can include but is not limited to personal computer
(Personal Computer, PC), personal digital assistant (Personal Digital Assistant, PDA), wireless handheld
Equipment, tablet computer (Tablet Computer), mobile phone, MP3 player, MP4 players, smartwatch, car-mounted display etc..
Claims (9)
1. a kind of display panel, which is characterized in that the display panel includes display area and non-display area, the display surface
Plate further includes：
Multiple press detection sensors, each press detection sensor includes first input end, the second input terminal, first defeated
Outlet and second output terminal, the first input end are electrically connected with the first detection terminal, second input terminal and the second detection
Terminal is electrically connected；
The multiple press detection sensor is located at the non-display area, and the multiple press detection sensor includes multiple
One press detection sensor and multiple second pressure detection sensors, the multiple first pressure detection sensor and described second
Press detection sensor is located at the opposite both sides of the non-display area；
The control terminal of multiple first switches and multiple second switches, the first switch and the second switch and signal end coupling
It connects, the first end of each first switch is coupled with the first output end of the corresponding press detection sensor, Mei Gesuo
The first end for stating second switch is coupled with the second output terminal of the corresponding press detection sensor, the multiple first switch
It is located at the non-display area with the multiple second switch, the voltage of the control terminal of the first switch is opened higher than described first
It is connected when the voltage of the first end of pass, the voltage of the control terminal of the second switch is higher than the electricity of the first end of the second switch
It is connected when pressure；
Multiple drive element of the grid, the multiple drive element of the grid are located at the non-display area, the multiple gate driving
Unit includes first grid driving unit and second grid driving unit, the first grid driving unit and the first pressure
Detection sensor is located at homonymy, and the second grid driving unit is located at homonymy with the second pressure detection sensor, described
Multiple first grid driving units are arranged along column direction, the multiple first grid driving unit cascade electrical connection, the multiple
Second grid driving unit is arranged along the column direction, the multiple second grid driving unit cascade electrical connection, in the row
On direction, the multiple first grid driving unit and the multiple second grid driving unit are arranged alternately；
The multiple drive element of the grid includes the first sub- drive element of the grid and the second sub- drive element of the grid, first son
Drive element of the grid is coupled with the first end of the corresponding first switch, the second end of the first switch and first son
Drive element of the grid corresponds to the coupling of the grid on row；The second sub- drive element of the grid and the of the corresponding second switch
One end couples, the grid coupling on the second end of second switch row corresponding with the described second sub- drive element of the grid；
Multiple data lines, every data line and one end of the Source and drain metal level in respective column couple.
2. display panel as described in claim 1, which is characterized in that the first switch and the second switch are thin for N-type
Film transistor.
3. display panel as described in claim 1, which is characterized in that the voltage of first electric signal is U1,12V ＜ U1 ＜
The voltage of 16V, the signal end are U2,6V ＜ U2 ＜ 10V.
4. display panel as described in claim 1, which is characterized in that the control terminal of the first switch and the second switch
Control terminal be electrically connected the same signal end.
5. display panel as described in claim 1, which is characterized in that first output end is multiplexed the pressure detecting sensing
First signal output line of device is coupled with the first end of the first switch；The second output terminal is multiplexed the pressure detecting and passes
The second signal output line of sensor is coupled with the first end of the second switch.
6. display panel as described in claim 1, which is characterized in that the display panel further includes multi-strip scanning line, every
The scan line is electrically connected with the grid on corresponding row.
7. display panel as described in claim 1, which is characterized in that the first pressure detection sensor is pressed with described second
Force detection sensor is staggered in the column direction.
8. a kind of display device, which is characterized in that include the display panel as described in any one of claim 1 to 7.
9. a kind of detection method, which is characterized in that the method is applied to the display as described in any one of claim 1 to 7
Panel, in detection-phase, first detection terminal inputs the first electric signal, the second detection terminal input grounding signal,
The signal end is used to provide the second electric signal of the conducting first switch and the second switch, first electric signal pair
The voltage answered is U1, and the corresponding voltage of second electric signal is U2, U1/2 ＜ U2 ＜ U1, the method includes：
In detection-phase, the signal end exports second electric signal, and first detection terminal exports first telecommunications
Number, multiple drive element of the grid export scanning signal, the Source and drain metal level of a plurality of data line in respective column
One end outputting data signals.
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| CN201810016374.0A CN108597424B (en) | 2018-01-08 | 2018-01-08 | Display panel, display device and detection method |
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| WO2020093449A1 (en) * | 2018-11-09 | 2020-05-14 | 惠科股份有限公司 | Measurement signal circuit and measurement method thereof |
| US10977972B2 (en) | 2018-11-09 | 2021-04-13 | HKC Corporation Limited | Signal measurement circuit and measurement method therefor |
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| CN108597424B (en) | 2021-03-23 |
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