CN106128351A - A kind of display device - Google Patents
A kind of display device Download PDFInfo
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- CN106128351A CN106128351A CN201610790501.3A CN201610790501A CN106128351A CN 106128351 A CN106128351 A CN 106128351A CN 201610790501 A CN201610790501 A CN 201610790501A CN 106128351 A CN106128351 A CN 106128351A
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- signal
- driver element
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- display device
- driving signal
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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
- G09G3/20—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
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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)
- Liquid Crystal Display Device Control (AREA)
Abstract
The application provides a kind of display device, and to avoid in bilateral gate driver circuit, when the drive circuit of side occurs abnormal, an abnormal side drive circuit can cause the drive circuit of entirety to occur to drive abnormal problem.The display device that the application provides, including display floater and the display unit that is arranged at described display floater, first group of driver element and second group of driver element, each driver element in described first group of driver element and described second group of driver element is provided with a plurality of output line, at least one output line of at least one driver element in least one set driver element connects raster data model testing circuit, described raster data model testing circuit is used for: the driving signal exporting this output line detects, when detecting that described driving signal is normal, control described output line and export described driving signal；When described driving abnormal signal being detected, control described output line and stop exporting described driving signal.
Description
Technical field
The application relates to display field, particularly relates to a kind of display device.
Background technology
Existing display device is when being driven display, general by drive circuit output signal, is scanned line by line
Each pixel.The drive circuit of display device mainly includes gate driver circuit and source electrode drive circuit, wherein, raster data model electricity
Road generally uses shift register to carry out the opening sequence of control gate output, and it starts shift register by an initial signal
Afterwards, grid output channel sequentially can carry out the action of Push And Release along with clock signal to gate line.When sweeping of gateline transmission
When retouching the grid that signal opens the thin film transistor (TFT) being connected with pixel, picture signal can be by the thin film transistor (TFT) being connected with pixel
Source electrode inputs, and makes pixel show accordingly.
In order to reduce the cost of manufacture of display device, existing display device display unit is driven display time,
The modes using bilateral raster data model more.Bilateral raster data model is operationally to utilize same source electrode to export, a level
In the line time, two pixels adjacent with even number to odd number are driven respectively, so can reduce the effect of cost.
But, existing bilateral gate driver circuit, the problem made due to technique, the grid that can frequently result in side drives
Dynamic circuit abnormal, such as, the gate driver circuit of side only exports high level signal or only output low level signal, or defeated
Go out spike pulse signal.Owing to the display of display floater is jointly to be driven realization by the gate driver circuit on both sides, and then one
When the gate driver circuit of side occurs abnormal, the driving of whole gate driver circuit can be caused to occur abnormal.
Summary of the invention
The application provides a kind of display device, to avoid in bilateral gate driver circuit, when the drive circuit of side is sent out
During raw exception, an abnormal side drive circuit can cause the problem that the drive circuit of entirety occurs to drive exception.
The embodiment of the present application provides a kind of display device, including display floater and the display that is arranged at described display floater
Unit, for realizing first group of driver element and second group of driver element, the institute of bilateral raster data model to described display unit
The each driver element stated in first group of driver element and described second group of driver element is provided with a plurality of output line,
At least one output line of at least one driver element in least one set driver element connects has grid to drive
Dynamic testing circuit, described raster data model testing circuit is used for: the driving signal exporting this output line detects, and works as inspection
Measure described driving signal normal time, control described output line export described driving signal；When detecting that described driving is believed
Time number abnormal, control described output line and stop exporting described driving signal.
The display device that the embodiment of the present application provides, connects at output line and has raster data model testing circuit, pass through grid
The driving signal that output line is transmitted by pole testing circuit detects, when detecting that driving signal is normal, and control signal
Output lead exports this driving signal, and when driving abnormal signal being detected, control signal output lead stops exporting this driving signal,
And then when the abnormal signal of output line output, by turning off the abnormal output driving signal, and then can be in side
Driver element when occurring abnormal, it is to avoid abnormal side driver element causes the driver element of entirety to occur to drive abnormal asking
Topic.
Preferably, described raster data model testing circuit includes detector unit and thin film transistor (TFT), in described detector unit
Signal detection input line it is provided with, at the outfan of described detector unit between input and the primary nodal point of this output line
And being provided with signal detection output lead between the grid of described thin film transistor (TFT), the other two ends of described thin film transistor (TFT) are connected to
Between described primary nodal point and the secondary nodal point of this output line；
When described detector unit detects that the driving signal inputted by signal detection input line is normal, by described letter
Number detection output lead export the first control signal so that described thin film transistor (TFT) turn on, described driving signal pass through described second
Node exports；
When described detector unit detects the driving abnormal signal inputted by signal detection input line, by described letter
Number detection output lead exports the second control signal so that described thin film transistor (TFT) disconnects, and described driving signal cannot be by described
Secondary nodal point exports.
The raster data model testing circuit that the embodiment of the present application provides, specifically includes detector unit and thin film transistor (TFT), passes through
When detecting that driving signal is normal, control thin film transistor (TFT) conducting, when driving abnormal signal being detected, control film crystal
Pipe is closed, and then can be according to driving signal the most normal, it is achieved control whether this driving signal exports.
Preferably, described detector unit specifically for,
Detect whether described driving signal is dropped to the second voltage by the first voltage in the first preset duration；
If be detected that described driving signal is dropped to described second electricity by described first voltage in the first preset duration
Press, and described driving signal is risen to the required duration of described first voltage in the second preset duration scope by described second voltage
In, then export the first control signal；
Otherwise, the second control signal is exported.
Whether the detector unit that the embodiment of the present application provides, drive the magnitude of voltage of signal in the first preset duration by detection
Interior decline, if being not detected by driving the magnitude of voltage of signal to decline, first judges to drive signal as exception, and then output shutoff
Second control signal of thin film transistor (TFT)；If detecting, the magnitude of voltage driving signal declines, the most further to driving signal to rise
Time value judge, if the time value risen is not in the second preset duration, then judges equally that driving signal, as exception, enters
And export the second control signal turning off thin film transistor (TFT), if the time value risen is in the second preset duration, then judge that this drives
Dynamic signal is normal, and then the first control signal of output conducting membrane transistor, i.e. by the magnitude of voltage driving signal being
The detection of the duration of no decline and rising, and then can realize whether the driving signal of output line transmission is normally carried out
Detection.
Preferably, described thin film transistor (TFT) is N-type TFT or P-type TFT.
Preferably, described display device also includes that system board, described detector unit are arranged at described system board.
Preferably, described display device also includes flexible PCB, described signal detection input line and described signal detection
Output lead is connected to described system board by described flexible PCB.
Preferably, a plurality of output line that each driver element is arranged includes scan signal line, reseting signal line and control
Holding wire processed；Wherein, the signal line in scan signal line, reseting signal line, control signal wire or many signal line connect
Described raster data model testing circuit.
Preferably, each driver element in described first group of driver element and described second group of driver element is also associated with
A plurality of signal input line.
Preferably, a plurality of signal input line that each driver element connects includes that clock cable and scanning trigger signal
Line.
Accompanying drawing explanation
The structural representation of a kind of display device that Fig. 1 provides for the embodiment of the present application；
The structural representation of the display device being provided with signal input line that Fig. 2 provides for the embodiment of the present application；
Fig. 3 shows for the structure of the display device being provided with detector unit and thin film transistor (TFT) that the embodiment of the present application provides
It is intended to；
The driver element that Fig. 4 provides for the embodiment of the present application and the structural representation of detector unit；
The overhaul flow chart of the detector unit that Fig. 5 provides for the embodiment of the present application；
The structural representation of the another kind of display device that Fig. 6 provides for the embodiment of the present application.
Detailed description of the invention
Below in conjunction with Figure of description, the embodiment of the present application is realized process to be described in detail.It should be noted that
The most same or similar label represents same or similar element or has the element of same or like function.Lead to below
It is exemplary for crossing the embodiment being described with reference to the drawings, and is only used for explaining the application, and it is not intended that restriction to the application.
As it is shown in figure 1, the embodiment of the present application provides a kind of display device, including display floater 10 and be arranged at display surface
The display unit 13 of plate 10, for realizing first group of driver element 11 of bilateral raster data model and second group to display unit 13
Driver element 12, each driver element 110 in first group of driver element 11 and second group of driver element 12 is provided with a plurality of letter
Number output lead 111, wherein, at least one output line of at least one driver element 110 in least one set driver element
111 connections have raster data model testing circuit 112, raster data model testing circuit 112 to be used for: to the output of this output line 111
Signal is driven to detect, when detecting that driving signal is normal, control signal output lead 111 output drive signal；Work as detection
To when driving abnormal signal, control signal output lead 111 stops output drive signal.Wherein it is desired to explanation, in Fig. 1 only
That each driver element 110 is provided with the illustration carried out as a example by two bars output leads 111, the application not as
Limit.The a plurality of output line 111 arranged for each driver element 110, it can include scan signal line, reseting signal line
And control signal wire.In the specific implementation, as in figure 2 it is shown, every in first group of driver element 11 and second group of driver element 12
One driver element 110 can also connect a plurality of signal input line 121.Wherein, many bars that each driver element 110 connects
Input line 121 can include clock cable and scanning line trigger signal.
It should be noted that Fig. 1 is only with first in first group of driver element 11 and second group of driver element 12
What the Article 1 output line 111 of individual driver element 110 was carried out as a example by being provided with raster data model testing circuit 112 illustrates
Bright, in the specific implementation, can be respectively provided with at the output line 111 of first group of driver element 11 and second group of driver element 12
Raster data model testing circuit 112, it is also possible to only the output line 111 at first group of driver element 11 arranges raster data model detection
Circuit 112, it is also possible to only the output line 111 at second group of driver element 12 arranges raster data model testing circuit 112.Its
In, it is to drive signal normally in order to detect that each output line 111 of drive element of the grid 110 the most all exports, carries
The degree of accuracy of high detection, can be at each driver element 110 of first group of driver element 11 and second group of driver element 12
Each bars output lead 111 is all connected with raster data model testing circuit 112.Preferably, multiple in order to reduce the cabling of display floater
Miscellaneous degree, it is also possible to optionally raster data model testing circuit 112 is set at part signal output lead 111.Such as, for first group
Driver element 11, can arrange raster data model testing circuit 112 at the output line 111 of the driver element 110 being separated by.Example again
As, it is also possible to only first group of driver element 11 and second group of driver element 12 and last column pixel of display unit 13
Corresponding output line 111 arranges raster data model testing circuit 112.About specifically arranging grid at any bars output lead 111
Pole testing circuit 112, can arrange the most flexibly in the specific implementation, does not limits at this.It addition, for not
With output line 111, it can connect a raster data model testing circuit 112, and different output lines 111 can pass through
The different inputs of this raster data model testing circuit 112 input, and this raster data model testing circuit 112 to be integrated with detection many
The most normal function of driving signal of individual unlike signal output lead 111 output.Different output line 111, it is also possible to even
Connect different raster data model testing circuits 112, i.e. each bars output lead 111 all connects a corresponding raster data model inspection
Slowdown monitoring circuit 112, the signal that this output line 111 is exported by this raster data model testing circuit 112 detects.
The display device that the embodiment of the present application provides, connects at output line 111 and has raster data model testing circuit 112,
The driving signal exported driver element 110 by grid testing circuit 112 is detected, and is detecting that driving signal is normal
Time, control signal output lead 111 exports this driving signal, and when driving abnormal signal being detected, control signal output lead 111 stops
Only export this driving signal, and then when the abnormal signal of output line 111 output, by turning off abnormal driving signal
Output, and then can driver element in side when occurring abnormal, it is to avoid abnormal driver element causes whole drive circuit to be sent out
The raw problem driving exception.
For raster data model testing circuit 112, as it is shown on figure 3, it specifically can include detector unit 116 and film crystal
Pipe 117, is provided with signal detection between the input A1 and the primary nodal point B1 of this output line 111 of detector unit 116
Input line 118, is provided with signal detection output between the output terminals A 2 and the grid of thin film transistor (TFT) 117 of detector unit 116
Line 119, the other two ends of thin film transistor (TFT) 116 be connected to primary nodal point B1 and this output line 111 secondary nodal point B2 it
Between.Wherein, Fig. 4 is a kind of structural representation between driver element 110 and detector unit 116, and detector unit 116 passes through signal
Scanning signal, reset signal that driver element 110 is exported by detection input line 118 are transferred to detector unit 116, detector unit
116 export the first control signal or the second control signal by signal detection output lead 119.
When detector unit 116 detects that the driving signal by signal detection input line 118 input is normal, pass through signal
Detection output lead 119 exports the first control signal so that thin film transistor (TFT) 117 turns on, and drives signal defeated by secondary nodal point B2
Go out.
When detector unit 116 detects the driving abnormal signal by signal detection input line 118 input, pass through signal
Detection output lead 119 exports the second control signal so that thin film transistor (TFT) 116 disconnects, and drives signal cannot pass through secondary nodal point
B2 exports.
In the specific implementation, about thin film transistor (TFT) 116, it can be N-type TFT, it is also possible to for p-type thin film
Transistor.When for P-type TFT, corresponding first control signal is low level signal, and P-type TFT is low at this
Turning under the control of level signal, corresponding second control signal is high level signal, and P-type TFT is believed at this high level
Number control under close.When for N-type TFT, corresponding first control signal can be high level signal, N-type thin film
Transistor turns under the control of this high level signal, and corresponding second control signal can be low level signal, and N-type thin film is brilliant
Body pipe is closed under the control of this low level signal.It addition, when display device is provided with multiple raster data model testing circuit 112
Time, in order to reduce the cabling complexity of display device, the thin film transistor (TFT) being connected with same type of output line 111
The grid of 117 may be coupled on same signal detection output lead 119.I.e., such as, each of first group of driver element 11
When the scan signal line of driver element 110 is respectively connected with raster data model testing circuit 112, can be many by connecting scan signal line
The grid of each thin film transistor (TFT) 117 in individual raster data model testing circuit 112 is all connected to a bars detection output lead
On 119.
The testing circuit 112 that the embodiment of the present application provides specifically includes detector unit 116 and thin film transistor (TFT) 117, passes through
When detecting that driving signal is normal, control thin film transistor (TFT) conducting, when driving abnormal signal being detected, control film crystal
Pipe is closed, and then can be according to driving signal the most normal, it is achieved control to drive whether signal exports.
For the process that specifically detects of detector unit 116, below in conjunction with Fig. 5, carry out following detailed description.
The driving signal that step S101, detection signal detection input line input is the most electric by first in the first preset duration
The second voltage is reduced in pressure.The most then carry out step S102, if it is not, then carry out step S103.
Step S102, detection drive signal risen to the first voltage by the second voltage needed for duration whether when second presets
In long.The most then carry out step S104, if it is not, then carry out step S105.
Step 104, export the first control signal.
Step 105, export the second control signal.
Step S103, export the second control signal.
During it should be noted that the first preset duration is greater than the cycle being generally used for being driven the pulse signal of display
Long, drive whether the magnitude of voltage of signal changes by detection in this first preset duration, and then to detect output line 111
Whether the magnitude of voltage of the signal of output is to drive signal normally, and i.e. can detect driving signal whether to be one is high electricity always
Flat VGH signal or low level VGL signal.About the occurrence of the first preset duration, can in the specific implementation, according to need
Arrange flexibly, do not limit at this.For the second preset duration, it can be the cycle of a normal driving signal
There is near duration, or the normal cycle duration driving signal the duration of default fluctuation range, can be pre-stored within this
In detector unit 116.Detecting that the magnitude of voltage driving signal that signal input line 111 inputs is risen to first by the second voltage
During the actual duration of voltage, by the actual duration detected is compared with this second preset duration, it is determined for
Whether this driving signal is a normal signal.That is, if the actual duration detected is within this second preset duration scope,
Then think that this driving signal is a normal driving signal；If the actual duration detected is not in this second preset duration scope
Within, then it is assumed that this driving signal is the driving signal of an exception.
The detector unit 116 that the embodiment of the present application provides, drives by detection whether the magnitude of voltage of signal is preset first
Declining in duration, if being not detected by driving the magnitude of voltage of signal to decline, first judging that this driving signal is as abnormal driving
Signal, and then the second control signal of output shutoff thin film transistor (TFT) 117；If detecting, the magnitude of voltage driving signal declines, then
Further the time value driving signal to rise is judged, if the time value risen is not in the range of the second preset duration, then
Same judge to drive signal for abnormal, and then the second control signal of output shutoff thin film transistor (TFT) 117, if the time value of rising
In the range of the second preset duration, then judge that it is normal for driving signal, and then the first control of output conducting membrane transistor 117
Signal, i.e. the detection of the duration by whether the magnitude of voltage driving signal is declined and rise, and then can realize driving
Whether signal is normally carried out judging.
In the specific implementation, as shown in Figure 6, display device also includes that system board 16, detector unit 116 are arranged at system board
16.Preferably, display device also includes pixel cell 17, control driver element 110 be driven the driving chip 14 of display with
And flexible PCB 115, signal detection input line 118 and signal detection output lead 119 be connected to by flexible PCB 115 be
System plate 16.
In sum, the display device that the embodiment of the present application provides, connect at output line 111 and have raster data model to detect
Circuit 112, the driving signal exported driver element 110 by grid testing circuit 112 is detected, and driving letter detected
Time number normal, control signal output lead 111 exports this driving signal, and when driving abnormal signal being detected, control signal exports
Line 111 stops exporting this driving signal, and then when the abnormal signal of output line 111 output, by turning off abnormal driving
The output of dynamic signal, can avoid abnormal side driver element to cause whole drive circuit to occur to drive abnormal problem.
Obviously, those skilled in the art can carry out various change and the modification essence without deviating from the application to the application
God and scope.So, if these amendments of the application and modification belong to the scope of the application claim and equivalent technologies thereof
Within, then the application is also intended to comprise these change and modification.
Claims (9)
1. a display device, including display floater and the display unit that is arranged at described display floater, for described aobvious
Show that unit realizes first group of driver element of bilateral raster data model and second group of driver element, described first group of driver element and
Each driver element in described second group of driver element is provided with a plurality of output line, it is characterised in that
At least one output line of at least one driver element in least one set driver element connects has raster data model to examine
Slowdown monitoring circuit, described raster data model testing circuit is used for: the driving signal exporting this output line detects, when detecting
When described driving signal is normal, controls described output line and export described driving signal；When detecting that described driving signal is different
Chang Shi, controls described output line and stops exporting described driving signal.
2. display device as claimed in claim 1, it is characterised in that described raster data model testing circuit include detector unit and
Thin film transistor (TFT), is provided with signal detection defeated between the input and the primary nodal point of this output line of described detector unit
Enter line, between the outfan and the grid of described thin film transistor (TFT) of described detector unit, be provided with signal detection output lead, institute
The other two ends stating thin film transistor (TFT) are connected between described primary nodal point and the secondary nodal point of this output line；
When described detector unit detects that the driving signal inputted by signal detection input line is normal, examined by described signal
Surveying output lead and export the first control signal so that described thin film transistor (TFT) turns on, described driving signal passes through described secondary nodal point
Output；
When described detector unit detects the driving abnormal signal inputted by signal detection input line, examined by described signal
Surveying output lead and export the second control signal so that described thin film transistor (TFT) disconnects, described driving signal cannot be by described second
Node exports.
3. display device as claimed in claim 2, it is characterised in that described detector unit specifically for:
Detect whether described driving signal is dropped to the second voltage by the first voltage in the first preset duration；
If be detected that described driving signal is dropped to described second voltage by described first voltage in the first preset duration, and
Described driving signal is risen to the required duration of described first voltage in the range of the second preset duration by described second voltage, then
Export the first control signal；
Otherwise, the second control signal is exported.
4. display device as claimed in claim 2, it is characterised in that described thin film transistor (TFT) is N-type TFT or p-type
Thin film transistor (TFT).
5. the display device as described in any one of claim 2-4, it is characterised in that described display device also includes system board,
Described detector unit is arranged at described system board.
6. display device as claimed in claim 5, it is characterised in that described display device also includes flexible PCB, described
Signal detection input line and described signal detection output lead are connected to described system board by described flexible PCB.
7. display device as claimed in claim 1, it is characterised in that a plurality of output line bag that each driver element is arranged
Include scan signal line, reseting signal line and control signal wire；Wherein, in scan signal line, reseting signal line, control signal wire
One signal line or many signal line connect described raster data model testing circuit.
8. display device as claimed in claim 1, it is characterised in that described first group of driver element and described second group of driving
Each driver element in unit connects a plurality of signal input line.
9. display device as claimed in claim 8, it is characterised in that a plurality of signal input line bag that each driver element connects
Include clock cable and scanning line trigger signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610790501.3A CN106128351B (en) | 2016-08-31 | 2016-08-31 | Display device |
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|---|---|---|---|
| CN201610790501.3A CN106128351B (en) | 2016-08-31 | 2016-08-31 | Display device |
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| CN106128351B CN106128351B (en) | 2020-12-29 |
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| US11217135B2 (en) | 2017-08-08 | 2022-01-04 | Boe Technology Group Co., Ltd. | Scan driving circuit and driving method, display device |
| CN109389953A (en) * | 2017-08-08 | 2019-02-26 | 京东方科技集团股份有限公司 | Scan drive circuit and its driving method, display device |
| WO2019113890A1 (en) * | 2017-12-14 | 2019-06-20 | Harman International Industries, Incorporated | Method and display device for detecting connection failure of display driver integrated circuit |
| US11062632B2 (en) | 2017-12-14 | 2021-07-13 | Harman International Industries, Incorporated | Method and display device for detecting connection failure of display driver integrated circuit |
| CN108806581A (en) * | 2018-06-29 | 2018-11-13 | 厦门天马微电子有限公司 | Scan drive circuit and display panel |
| CN108806581B (en) * | 2018-06-29 | 2021-08-13 | 厦门天马微电子有限公司 | Scanning driving circuit and display panel |
| US10783817B2 (en) | 2018-09-21 | 2020-09-22 | Chongqing Hkc Optoelectronics Technology Co., Ltd. | Driving circuit, level shifter chip, and display device |
| CN108877638B (en) * | 2018-09-21 | 2021-06-04 | 重庆惠科金渝光电科技有限公司 | Drive circuit, boost chip and display device |
| WO2020056870A1 (en) * | 2018-09-21 | 2020-03-26 | 重庆惠科金渝光电科技有限公司 | Drive circuit, level shifter and display device |
| CN108877638A (en) * | 2018-09-21 | 2018-11-23 | 重庆惠科金渝光电科技有限公司 | Driving circuit, boost chip and display device |
| CN110164346A (en) * | 2019-06-27 | 2019-08-23 | 惠科股份有限公司 | The repair system and restorative procedure of driving circuit |
| WO2021103183A1 (en) * | 2019-11-29 | 2021-06-03 | Tcl华星光电技术有限公司 | Drive circuit, drive method, and display apparatus |
| CN112331120A (en) * | 2020-11-05 | 2021-02-05 | 北海惠科光电技术有限公司 | Array substrate row driving reset circuit and method and display device |
| CN114203079A (en) * | 2021-11-30 | 2022-03-18 | 长沙惠科光电有限公司 | Detection circuit, signal detection method and display panel |
| CN114203079B (en) * | 2021-11-30 | 2023-10-13 | 长沙惠科光电有限公司 | Detection circuit, signal detection method and display panel |
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