CN109448618A - A kind of driving method of display panel, display device and display device - Google Patents
A kind of driving method of display panel, display device and display device Download PDFInfo
- Publication number
- CN109448618A CN109448618A CN201811595615.8A CN201811595615A CN109448618A CN 109448618 A CN109448618 A CN 109448618A CN 201811595615 A CN201811595615 A CN 201811595615A CN 109448618 A CN109448618 A CN 109448618A
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- way conduction
- conduction unit
- driving signal
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 105
- 239000004065 semiconductor Substances 0.000 claims description 97
- 229920005591 polysilicon Polymers 0.000 claims description 43
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 41
- 239000000758 substrate Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 abstract description 10
- 239000001301 oxygen Substances 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 230000002159 abnormal effect Effects 0.000 abstract description 9
- 238000006056 electrooxidation reaction Methods 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 9
- 239000012535 impurity Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses the driving methods of a kind of display panel, display device and display device.The display panel, including viewing area and non-display area, non-display area are provided with detection terminal, driving signal terminal, one-way conduction unit, scan drive circuit, and the drive signal line being electrically connected with scan drive circuit.Driving signal terminal is electrically connected with drive signal line, and detection terminal is electrically connected by one-way conduction unit with drive signal line.If driving signal terminal transmits driving signal to drive signal line, the cut-off of one-way conduction unit, driving signal can not be connected by check unit and be input to detection terminal, therefore there is no electric signal at detection terminal during driving, so as to avoid chemically reacting at detection terminal because the water oxygen in electric signal and environment is formed, there is electrochemical corrosion phenomenon, and then reduce the abnormal phenomenon of display panel display, improves the reliability of display panel.
Description
Technical field
The present embodiments relate to field of display technology more particularly to a kind of display panels, display device and display device
Driving method.
Background technique
Display device has been widely used in the products such as TV, laptop, mobile phone, personal digital assistant at present
In, and display panel is the key element of display device, many display panels all pass through one driving circuit with encapsulation of connection
Realize display function.
Before display panel realizes display function, need to carry out reliability test to display panel.In reliability test
In the process, display panel is electrically connected with detection terminal by signal wire, and detection circuit is surveyed by detection terminal driving display
Examination.And after reliability test, display panel needs are connect with driving circuit realizes display function, and detection terminal is logical at this time
Crossing signal wire, there are electric signals, and are formed and chemically reacted with the water oxygen in environment, electrochemical corrosion occur, when seriously corroded,
It will appear short circuit phenomenon in display panel, cause display panel display abnormal.
Summary of the invention
The present invention provides the driving method of a kind of display panel, display device and display device, can greatly reduce aobvious
Show the corrosion phenomenon of panel, to reduce the abnormal phenomenon of display panel display, improves the reliability of display panel.
In a first aspect, the embodiment of the invention provides a kind of display panel, including viewing area and non-display area, it is described non-aobvious
Show that area is provided with detection terminal, driving signal terminal, one-way conduction unit, scan drive circuit, and with the turntable driving
The drive signal line of circuit electrical connection；
The driving signal terminal is electrically connected with the drive signal line；
The detection terminal is electrically connected by the one-way conduction unit with the drive signal line；
If the driving signal terminal transmits driving signal, the one-way conduction unit cut-off to drive signal line.
Second aspect, the embodiment of the invention also provides a kind of display devices, provide including any embodiment of that present invention
Display panel.
The third aspect, the embodiment of the invention also provides a kind of driving methods of display device, for driving the present invention to appoint
The display device that embodiment of anticipating provides, comprising:
Driving signal is provided to the driving signal terminal；The one-way conduction unit cut-off.
The present invention is electrically connected by the way that driving signal terminal is arranged with drive signal line, and detection terminal passes through one-way conduction unit
It is electrically connected with drive signal line.In the detection process of display panel, detection terminal output signal by one-way conduction unit by
Drive signal line is exported to scan drive circuit, works normally scan drive circuit, realizes the detection of display panel.It is showing
During the driving of panel, detection terminal stops output signal, and driving signal terminal output drive signal passes through drive signal line
To scan drive circuit, the normal display of display panel is realized.And driving signal ends one-way conduction unit, driving signal
The driving signal of terminal output can not be connected by check unit and be input to detection terminal, therefore detection terminal during driving
Locate no electric signal, so as to avoid chemically reacting at detection terminal because the water oxygen in electric signal and environment is formed, electricity occurs
Chemical attack phenomenon, and then reduce the abnormal phenomenon of display panel display, improve the reliability of display panel.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of display panel provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of detection circuit provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another display panel provided in an embodiment of the present invention；
Fig. 4 is a kind of the schematic diagram of the section structure of display panel provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Fig. 1 is a kind of structural schematic diagram of display panel provided in an embodiment of the present invention, as shown in Figure 1, the display panel
100 include viewing area 10 and non-display area 20, and non-display area 20 is provided with detection terminal 21, driving signal terminal 22, unidirectionally leads
Logical unit 23, scan drive circuit 24, and the drive signal line 25 being electrically connected with scan drive circuit 24.Driving signal terminal
22 are electrically connected with drive signal line 25, and detection terminal 24 is electrically connected by one-way conduction unit 23 with drive signal line 25.If driving
Dynamic signal terminal 22 transmits driving signal to drive signal line 25, and one-way conduction unit 23 ends.
Specifically, the non-display area 20 of display panel 100 further includes detection circuit 26 and detection circuit terminal 27, viewing area
10 include the pixel 11 of array arrangement, and the pixel 11 of every row is electrically connected by a scan line G with scan drive circuit 24, each column
Pixel 11 be electrically connected with detection circuit 26 by a data line D.Detection circuit terminal 27 is electrically connected with detection circuit 26, is used
In providing detection signal for detection circuit 26.One-way conduction unit 23 has the property of one-way conduction, can pass through one-way conduction
The voltage swing that 23 both ends of unit apply realizes the one-way conduction of one-way conduction unit 23.For example, one-way conduction unit 23
One end applies high level, and the other end applies low level, and one-way conduction unit 23 is connected.When one end of one-way conduction unit 23 applies
Low level, the other end apply high level, and one-way conduction unit 23 ends.
It carries out carrying out display panel by detection circuit 26 survey of reliability before driving shows in display panel 100
Examination process.During the test, one-way conduction unit 23 is connected, and detection terminal 21 is electrically connected with the realization of drive signal line 25, examines
It surveys terminal 21 and scan drive circuit 24 is outputed signal to by drive signal line 25, allow the normal work of scan drive circuit 24
Make, scanning circuit 24 exports scanning signal to pixel 11 line by line.Detection circuit terminal 27 is that detection circuit 26 provides detection simultaneously
Signal, when so that scan drive circuit 24 exporting scanning signal, the data line D input detection signal of corresponding pixel 11, thus
Realize the detection of pixel 11.Under normal circumstances, the level for the signal that detection terminal 21 exports is constant, i.e., detection terminal 21 exports
The level of signal can be high level or low level, guarantee that one-way conduction unit 23 is constantly in conducting shape in the detection process
State, so that detection process realizes normal detection.
Illustratively, Fig. 2 is a kind of structural schematic diagram of detection circuit provided in an embodiment of the present invention.In conjunction with Fig. 1 and figure
2, detection circuit 26 can test circuit, including multiple switch transistor T for odd even.Detection circuit terminal 27 includes control terminal
271, the first data signal input terminal 272 and the second data signal input terminal 273.The grid of multiple switch transistor T with
Control terminal 271 is electrically connected, and the first pole of multiple switch transistor T is electrically connected with data line D.It is electrically connected with odd number column data line D
The second pole of the switching transistor T connect is electrically connected with the first data signal input terminal 272, is electrically connected with even number column data line
The second pole of switching transistor T is electrically connected with the second data signal input terminal 273.In the detection process of display panel 100,
271 input control signal of control terminal controls multiple switch transistor T conducting, and the first data signal input terminal 272 is alternate
The first level and second electrical level are inputted, the second data signal input terminal 273 alternately inputs second electrical level and the first level, the
The data-signal that one data signal input terminal 272 and the second data signal input terminal 273 input is different, so that odd number
The corresponding odd column pixel 11 of column data line D even column pixels 11 corresponding with even number column data line D are alternately luminous or black
State, to detect whether display panel 100 can normally be lighted.
After reliability test, display panel 100 starts normal driving process.Detection terminal 21 stops input letter
Number, 22 output drive signal of driving signal terminal, one-way conduction unit 23 ends, the driving signal that driving signal terminal 22 exports
It is exported by drive signal line 25 to scan drive circuit 24, can work normally scan drive circuit 24, scanning circuit 24
Scanning signal is exported line by line to pixel 11.In addition, non-display area 20 further includes data signal input terminal, in driving process
Middle input data signal, so that pixel 11 is shown according to data-signal.Moreover, driving signal can make during driving
One-way conduction unit 23 ends, and the driving signal that driving signal terminal 22 exports can not be input to inspection by one-way conduction unit 23
Terminal 21 is surveyed, therefore does not have electric signal at detection terminal 21 during driving, so as to avoid at detection terminal 21 because of electricity
Water oxygen in signal and environment, which is formed, to be chemically reacted, and electrochemical corrosion phenomenon occurs, so reduce display panel 100 show it is different
Normal phenomenon improves the reliability of display panel 100.
The technical solution of the present embodiment is electrically connected by setting driving signal terminal with drive signal line, and detection terminal is logical
One-way conduction unit is crossed to be electrically connected with drive signal line.In the detection process of display panel, detection terminal output signal passes through
One-way conduction unit is exported by drive signal line to scan drive circuit, works normally scan drive circuit, realizes display surface
The detection of plate.During the driving of display panel, detection terminal stops output signal, driving signal terminal output drive signal
By drive signal line to scan drive circuit, the normal display of display panel is realized.And driving signal makes one-way conduction list
Member cut-off, the driving signal of driving signal terminal output can not be connected by check unit is input to detection terminal, therefore is driving
There is no electric signal at detection terminal during dynamic, so as to avoid at detection terminal because electric signal and the water oxygen in environment are formed
, there is electrochemical corrosion phenomenon in chemical reaction, and then reduces the abnormal phenomenon of display panel display, improves display panel
Reliability.
Based on the above technical solution, Fig. 3 is that the structure of another display panel provided in an embodiment of the present invention is shown
It is intended to.As shown in figure 3, drive signal line 25 includes the first power supply line 251 and second source line 252, scan drive circuit 24 is wrapped
Include the first power input in1 and second source input terminal in2, the first level of the first power input in1 input is greater than the
Two power inputs input the second electrical level of in2, and the first power supply line 251 is electrically connected with the first power input in1, second source
Line 252 is electrically connected with second source input terminal in2.
Driving signal terminal 22 includes the first driving signal terminal 221 and the second driving signal terminal 222, the first driving letter
Number terminal 221 is electrically connected with the first power supply line 251, and the second driving signal terminal 222 is electrically connected with second source line 252.Detection
Terminal 21 includes the first detection terminal 211 and the second detection terminal 212, and one-way conduction unit 23 includes the first one-way conduction unit
231 and the second one-way conduction unit 232, the first end A1 of the first one-way conduction unit 231 be electrically connected with the first detection terminal 211
It connecing, the second end B1 of the first one-way conduction unit 231 is electrically connected with the first power supply line 251, and the of the second one-way conduction unit 212
One end A2 is electrically connected with second source line 252,212 electricity of second end B2 and the second detection terminal of the second one-way conduction unit 212
Connection.
Specifically, the first power supply line 251 is electrically connected with the first power input in1, second source line 252 and second source
Input terminal in2 electrical connection, and the first level of the first power input in1 input is greater than second source input terminal and inputs in2
Second electrical level, therefore the first detection terminal 211 for being electrically connected with the first power supply line 251 inputs the first level, with second source
The second detection terminal 212 input second electrical level that line 252 is electrically connected, the first driving signal terminal 221 the first level of input, second
Driving signal terminal 222 inputs second electrical level, and the first level is greater than second electrical level.Illustratively, the first level can be high electricity
Flat, second electrical level can be low level.
One-way conduction unit 23 includes the first one-way conduction unit 231 and the second one-way conduction unit 232, and first unidirectionally leads
The first end input high level of logical unit 231 and the second one-way conduction unit 232, when second end input low level, are connected.On the contrary
, the first end input low level of the first one-way conduction unit 231 and the second one-way conduction unit 232, the high electricity of second end input
Usually end.Illustratively, the first one-way conduction unit 211 and the second one-way conduction unit 212 are diode, and first is unidirectional
The first end A2 of the first end A1 of onunit 211 and the second one-way conduction unit 212 is the anode of diode, and first unidirectionally leads
The second end B1 of the logical unit 211 and second end B2 of the second one-way conduction unit 212 is the cathode of diode.When the sun of diode
Diode current flow when pole input high level or cathode input low level, when the anode input low level or cathode of diode input height
Diode ends when level.
In the detection process, driving signal terminal 22 does not provide driving signal.The first end of first one-way conduction unit 231
A1 inputs the first level, and second unidirectionally challengees the second end B2 input second electrical level of unit 232, therefore the first one-way conduction unit by oneself
231 and second one-way conduction unit 232 be both turned on, the first detection terminal 211 and the second detection terminal 212 are scan drive circuit
Signal is provided.During driving, one-way conduction unit 23 does not provide signal, and the first driving signal terminal 221 is unidirectional to first
The second end B1 of onunit 231 inputs the first level, and the second driving signal terminal 222 is to the second one-way conduction unit 232
Second end B2 inputs second electrical level, therefore the first one-way conduction unit 231 and the second one-way conduction unit 232 are turned off.Driving
Signal not only works normally scan drive circuit 24, and driving pixel 11 is normally shown, and can make one-way conduction unit
23 cut-offs, avoid driving signal from being input to detection terminal 21, therefore test side during driving by one-way conduction unit 23
There is no electric signal at son 21, so as to avoid chemically reacting at detection terminal 21 because the water oxygen in electric signal and environment is formed,
There is electrochemical corrosion phenomenon, and then reduce display panel 100 and show abnormal phenomenon, improve display panel 100 can
By property.
It should be noted that scan drive circuit 24 further includes other signal input terminals, for directly inputting pulse letter
Number, allow scan drive circuit 24 to export scanning signal line by line, for driving the pixel 11 of viewing area 10 normally aobvious line by line
Show.
On the basis of above-mentioned each technical solution, Fig. 4 is a kind of section knot of display panel provided in an embodiment of the present invention
Structure schematic diagram.As shown in figure 4, display panel 100 further includes substrate 110 and buffer layer 111, buffer layer 111 covers substrate 110.
Non-display area 20 includes semiconductor active layer 112, and semiconductor active layer 112 is set to buffer layer 111 far from substrate
110 side, semiconductor active layer 112 include the first semiconductor region 1121 and the second semiconductor region 1122 of intrinsic polysilicon,
First semiconductor region 1121 and second at least one doped N-type of semiconductor region 1122 or p-type polysilicon, the semiconductor of doped N-type
Area is the cathode of diode, and the semiconductor region of doped p-type is the anode of diode.
Specifically, in conjunction with Fig. 1 and Fig. 4, the pixel of display panel generally comprises multiple transistor arrays and storage capacitance, brilliant
Body pipe array can be located on buffer layer 111, and buffer layer 111 is located on substrate 110, and buffer layer 111 covers the entire of substrate 110
Upper surface.Buffer layer 111 includes inorganic layer or organic layer.Buffer layer 111 stops oxygen and moisture, prevents moisture or impurity from passing through base
Plate 110 is spread, and flat surface is provided on the upper surface of substrate 110.By taking the transistor of top gate type as an example, display panel
100 include the semiconductor active layer 112 on buffer layer 111, and the semiconductor active layer 112 of viewing area 10 includes one intrinsic
The semiconductor region 1123 of polysilicon and two are doped with the polycrystalline semiconductor region 1124 of impurity, the semiconductor region of intrinsic polysilicon
1123 are arranged on two central parts for being doped with the polycrystalline semiconductor region 1124 of impurity, are doped with the half of the polysilicon of impurity
Conductor region 1124 is arranged on the two sides of the semiconductor region 1123 of intrinsic polysilicon.The semiconductor region 1123 of intrinsic polysilicon is used as
The channel of transistor, the polycrystalline semiconductor region 1124 for being doped with impurity are used as source region and the drain region of transistor.
The semiconductor active layer 112 of non-display area 20 is additionally provided with the first semiconductor region 1121 and the second semiconductor region
1122, the first semiconductor region 1121 and the second semiconductor region 1122 are the semiconductor region of intrinsic polysilicon, by leading the first half
At least one doped N-type or p-type polysilicon in body area 1121 and the second semiconductor region 1122, so that 1121 He of the first semiconductor region
Second semiconductor region 1122 forms a PN junction, that is, forms a diode.Illustratively, the first semiconductor region 1121 and second
A doped N-type polysilicon in semiconductor region 1122, another semiconductor regions electronics relative to no doped N-type polysilicon
Greater than hole, therefore the semiconductor regions of doped N-type polysilicon are the cathode of diode, and another semiconductor regions are diode
Anode.Similarly, a doped p-type polysilicon in the first semiconductor region 1121 and the second semiconductor region 1122, relative to not having
Another semiconductor regions hole of doped p-type polysilicon is greater than electronics, therefore the semiconductor regions of doped p-type polysilicon are two poles
The anode of pipe, another semiconductor regions are the cathode of diode.Alternatively, the first semiconductor region 1121 and the second semiconductor region 1122
In a semiconductor regions doped N-type polysilicon, another semiconductor regions doped p-type polysilicon, then doped N-type polysilicon
Semiconductor regions electronics be greater than hole, the semiconductor regions hole of doped p-type polysilicon is greater than electronics, therefore doped N-type is more
The semiconductor region of crystal silicon is the cathode of diode, and the semiconductor regions of doped p-type polysilicon are the anode of diode.
Illustratively, 1121 doped N-type polysilicon of the first semiconductor region, the second semiconductor region 1122 are intrinsic polysilicon,
Then the first semiconductor region 1121 is the cathode of diode, and the second semiconductor region 1122 is the anode of diode.Alternatively, the first half lead
1121 doped p-type polysilicon of body area, the second semiconductor region 1122 are intrinsic polysilicon, then the first semiconductor region 1121 is diode
Anode, the second semiconductor region 1122 be diode cathode.
Or 1122 doped N-type polysilicon of the second semiconductor region, the first semiconductor region 1121 are intrinsic polysilicon, then
Second semiconductor region 1122 is the cathode of diode, and the first semiconductor region 1121 is the anode of diode.Alternatively, the second semiconductor
1122 doped p-type polysilicon of area, the first semiconductor region 1121 are intrinsic polysilicon, then the second semiconductor region 1122 is diode
Anode, the first semiconductor region 1121 are the cathode of diode.
Or 1121 doped N-type polysilicon of the first semiconductor region, 1122 doped p-type polysilicon of the second semiconductor region, the
Semiconductor area 1121 is the cathode of diode, and the second semiconductor region 1122 is the anode of diode.Alternatively, the first semiconductor region
1121 doped p-type polysilicons, 1122 doped N-type polysilicon of the second semiconductor region, the first semiconductor region 1121 are the sun of diode
Pole, the second semiconductor region 1122 are the cathode of diode.
As shown in Figure 4,112 same layer of semiconductor active layer of diode and the transistor of viewing area 10 is arranged, not only structure
Simply, and it can simplify the process flow for making display panel.In addition it is not necessary that diode device is additionally arranged on a display panel
Part can save the space of the non-display area of display panel, be conducive to the realization of display panel narrow frame.
The embodiment of the present invention also provides a kind of display device, and Fig. 5 is a kind of display device provided in an embodiment of the present invention
Structural schematic diagram.As shown in figure 5, the display device 00 includes the display panel 100 that any embodiment of that present invention provides.
With continued reference to Fig. 5, display device further includes function-driven circuit 28.Function-driven circuit 28 and driving signal terminal
22 electrical connections, function-driven circuit 28 are that display panel 100 provides driving signal.
Specifically, function-driven circuit 28 can be driving chip, to provide driving signal when the display of display panel 100.
In the detection process, function-driven circuit 28 and display panel 100 not yet with the driving signal terminal 22 on display panel 100
Realize electrical connection, therefore function-driven circuit 28 can not provide driving signal for display panel 100.One-way conduction unit 23 simultaneously
Conducting, detection terminal 21 are that drive signal line 25 provides signal.During driving, function-driven circuit 28 and display panel
Driving signal terminal 22 on 100 realizes electrical connection, provides driving signal for display panel 100.Driving signal makes list simultaneously
End to onunit 23, the driving signal that driving signal terminal 22 exports can not be input to detection by one-way conduction unit 23
Terminal 21, therefore there is no electric signal at detection terminal 21 during driving, so as to avoid at detection terminal 21 because of telecommunications
Number in environment water oxygen formed chemically react, there is electrochemical corrosion phenomenon, and then reduce display panel 100 and show exception
The phenomenon that, improve the reliability of display panel 100.
Illustratively, with continued reference to Fig. 5, drive signal line 25 includes the first power supply line 251 and second source line 252, is swept
Retouching driving circuit 24 includes the first power input in1 and second source input terminal in2, the first power supply line 251 and the first power supply
Input terminal in1 electrical connection, second source line 252 are electrically connected with second source input terminal in2.
Driving signal terminal 22 includes the first driving signal terminal 221 and the second driving signal terminal 222, the first driving letter
Number terminal 221 is electrically connected with the first power supply line 251, and the second driving signal terminal 222 is electrically connected with second source line 252, and first
221 input high level of driving signal terminal, 222 input low level of the second driving signal terminal.Detection terminal 21 includes the first inspection
Terminal 211 and the second detection terminal 212 are surveyed, one-way conduction unit 23 includes that the first one-way conduction unit 231 and second is unidirectionally led
Logical unit 232, the first end A1 of the first one-way conduction unit 231 are electrically connected with the first detection terminal 211, the first one-way conduction list
The second end B1 of member 231 is electrically connected with the first power supply line 251, the cut-off of the first one-way conduction unit 211.Second one-way conduction unit
212 first end A2 is electrically connected with second source line 252, the second end B2 of the second one-way conduction unit 212 and the second test side
Son 212 is electrically connected, the cut-off of the second one-way conduction unit 212.
During driving, one-way conduction unit 23 does not provide signal, and the first driving signal terminal 221 is unidirectionally led to first
The second end B1 of logical unit 231 inputs the first level, the second driving signal terminal 222 to the second one-way conduction unit 232 the
Two end B2 input second electrical level, therefore the first one-way conduction unit 231 and the second one-way conduction unit 232 are turned off.Driving letter
Work normally scan drive circuit 24, driving pixel 11 is normally shown, and can make one-way conduction unit 23
Cut-off avoids driving signal from being input to detection terminal 21, therefore detection terminal during driving by one-way conduction unit 23
There is no electric signal at 21, so as to avoid chemically reacting at detection terminal 21 because the water oxygen in electric signal and environment is formed, out
Existing electrochemical corrosion phenomenon, and then reduce display panel 100 and show abnormal phenomenon, improve the reliable of display panel 100
Property.
The embodiment of the present invention also provides a kind of driving method of display device, for driving any embodiment of that present invention to provide
Display device, which includes:
Driving signal, the cut-off of one-way conduction unit are provided to driving signal terminal.
Specifically, during the display of display device, driving signal can with when display panel normally show.It drives simultaneously
Signal ends one-way conduction unit, so that driving signal can not be input to detection terminal by one-way conduction unit, because
This does not have electric signal at detection terminal during driving, so as to avoid at detection terminal because of the water in electric signal and environment
Oxygen forms chemical reaction, electrochemical corrosion phenomenon occurs, and then reduce display panel 100 and show abnormal phenomenon, improves
The reliability of display panel.
The technical solution of the present embodiment, by ending one-way conduction unit to driving signal terminal offer driving signal,
The driving signal of driving signal terminal output can not be input to detection terminal by one-way conduction unit, therefore during driving
There is no electric signal at detection terminal, so as to avoid at detection terminal because the water oxygen in electric signal and environment forms chemistry instead
It answers, electrochemical corrosion phenomenon occurs, and then reduce display panel 100 and show abnormal phenomenon, improve display panel can
By property.
Based on the above technical solution, when drive signal line includes the first power supply line and second source line, scanning is driven
Dynamic circuit includes the first power input and second source input terminal, and the first power supply line is electrically connected with the first power input, the
Two power supply lines are electrically connected with second source input terminal.
Driving signal terminal include the first driving signal terminal and the second driving signal terminal, the first driving signal terminal with
The electrical connection of first power supply line, the second driving signal terminal are electrically connected with second source line.
Detection terminal includes the first detection terminal and the second detection terminal, and one-way conduction unit includes the first one-way conduction list
Member and the second one-way conduction unit, the first end of the first one-way conduction unit are electrically connected with the first detection terminal, and first unidirectionally leads
The second end of logical unit is electrically connected with the first power supply line, and the first end of the second one-way conduction unit is electrically connected with second source line,
The second end of second one-way conduction unit is electrically connected with the second detection terminal.
Driving signal includes high level driving signal and low level drive signal, which includes:
High level driving signal, the cut-off of the first one-way conduction unit are exported to the first driving signal terminal；To the second driving
Signal terminal exports low level drive signal, the cut-off of the second one-way conduction unit.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (12)
1. a kind of display panel, which is characterized in that including viewing area and non-display area, the non-display area is provided with test side
Son, driving signal terminal, one-way conduction unit, scan drive circuit, and the driving being electrically connected with the scan drive circuit
Signal wire；
The driving signal terminal is electrically connected with the drive signal line；
The detection terminal is electrically connected by the one-way conduction unit with the drive signal line；
If the driving signal terminal transmits driving signal, the one-way conduction unit cut-off to drive signal line.
2. display panel according to claim 1, which is characterized in that the drive signal line includes the first power supply line and the
Two power supply lines；The scan drive circuit includes the first power input and second source input terminal；First power input
First level of end input is greater than the second electrical level of second source input terminal input；First power supply line and described first
Power input electrical connection, the second source line are electrically connected with the second source input terminal；
The driving signal terminal includes the first driving signal terminal and the second driving signal terminal；First driving signal end
It is sub to be electrically connected with first power supply line；The second driving signal terminal is electrically connected with the second source line；The detection
Terminal includes the first detection terminal and the second detection terminal；The one-way conduction unit includes the first one-way conduction unit and second
One-way conduction unit, the first end of the first one-way conduction unit are electrically connected with first detection terminal, and described first is single
It is electrically connected to the second end of onunit with first power supply line；The first end of the second one-way conduction unit and described the
The electrical connection of two power supply lines, the second end of the second one-way conduction unit are electrically connected with second detection terminal.
3. display panel according to claim 2, which is characterized in that the first one-way conduction unit and second is unidirectionally led
Logical unit is diode, and the first end of the first end of the first one-way conduction unit and the second one-way conduction unit is
The second end of the anode of the diode, the second end of the first one-way conduction unit and the second one-way conduction unit is
The cathode of the diode.
4. display panel according to claim 3, which is characterized in that further include substrate and buffer layer, the buffer layer covers
Cover the substrate；
The non-display area includes semiconductor active layer, and the semiconductor active layer is set to the buffer layer far from the substrate
Side, the semiconductor active layer includes the first semiconductor region and the second semiconductor region of intrinsic polysilicon, described the first half
Conductor region and described at least one doped N-type of second semiconductor region or p-type polysilicon；The semiconductor region of doped N-type polysilicon is
The cathode of the diode, the semiconductor region of doped p-type polysilicon are the anode of the diode.
5. display panel according to claim 4, which is characterized in that the first semiconductor region doped N-type polysilicon, institute
The cathode that the first semiconductor region is the diode is stated, second semiconductor region is the anode of the diode；Or described
Semiconductor area doped p-type polysilicon, first semiconductor region are the anode of the diode, and second semiconductor region is
The cathode of the diode.
6. display panel according to claim 4, which is characterized in that the second semiconductor region doped N-type polysilicon, institute
The cathode that the second semiconductor region is the diode is stated, first semiconductor region is the anode of the diode；Or described
Two semiconductor region doped p-type polysilicons, second semiconductor region are the anode of the diode, and first semiconductor region is
The cathode of the diode.
7. display panel according to claim 4, which is characterized in that the first semiconductor region doped N-type polysilicon, institute
The second semiconductor region doped p-type polysilicon is stated, first semiconductor region is the cathode of the diode, second semiconductor
Area is the anode of the diode；The first semiconductor region doped p-type polysilicon, the second semiconductor region doped N-type are more
Crystal silicon, first semiconductor region are the anode of the diode, and second semiconductor region is the cathode of the diode.
8. a kind of display device, which is characterized in that including display panel as claimed in claim 1 to 7.
9. display device according to claim 8, which is characterized in that further include function-driven circuit；
The function-driven circuit is electrically connected with the driving signal terminal, and the function-driven circuit is that the display panel mentions
For driving signal.
10. display device according to claim 8, which is characterized in that the drive signal line include the first power supply line and
Second source line；The scan drive circuit includes the first power input and second source input terminal；First power supply line
It is electrically connected with first power input, the second source line is electrically connected with the second source input terminal；
The driving signal terminal includes the first driving signal terminal and the second driving signal terminal；First driving signal end
It is sub to be electrically connected with first power supply line；The second driving signal terminal is electrically connected with the second source line；Described first
Driving signal terminal input high level, the second driving signal terminal input low level；The detection terminal includes the first inspection
Survey terminal and the second detection terminal；The one-way conduction unit includes the first one-way conduction unit and the second one-way conduction unit,
The first end of the first one-way conduction unit is electrically connected with first detection terminal, and the of the first one-way conduction unit
Two ends are electrically connected with first power supply line, the first one-way conduction unit cut-off；The of the second one-way conduction unit
One end is electrically connected with the second source line, and the second end of the second one-way conduction unit is electrically connected with second detection terminal
It connects, the second one-way conduction unit cut-off.
11. a kind of driving method of display device, for driving display device according to any one of claims 8, which is characterized in that packet
It includes:
Driving signal is provided to the driving signal terminal；The one-way conduction unit cut-off.
12. the driving method of display device according to claim 11, which is characterized in that the drive signal line includes the
One power supply line and second source line；The scan drive circuit includes the first power input and second source input terminal；It is described
First power supply line is electrically connected with first power input, and the second source line is electrically connected with the second source input terminal
It connects；
The driving signal terminal includes the first driving signal terminal and the second driving signal terminal；First driving signal end
It is sub to be electrically connected with first power supply line；The second driving signal terminal is electrically connected with the second source line；
The detection terminal includes the first detection terminal and the second detection terminal；The one-way conduction unit is unidirectionally led including first
Logical unit and the second one-way conduction unit, the first end of the first one-way conduction unit are electrically connected with first detection terminal
It connects, the second end of the first one-way conduction unit is electrically connected with first power supply line, the second one-way conduction unit
First end is electrically connected with the second source line, the second end of the second one-way conduction unit and second detection terminal electricity
Connection；
The driving signal includes high level driving signal and low level drive signal；
Driving signal is provided to the driving signal terminal；The one-way conduction unit cut-off, comprising:
High level driving signal, the first one-way conduction unit cut-off are exported to the first driving signal terminal；To described
Second driving signal terminal exports low level drive signal, the second one-way conduction unit cut-off.
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| CN201811595615.8A CN109448618B (en) | 2018-12-25 | 2018-12-25 | Display panel, display device and driving method of display device |
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| CN201811595615.8A CN109448618B (en) | 2018-12-25 | 2018-12-25 | Display panel, display device and driving method of display device |
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