CN109545118A - Detection circuit and driving method, display panel - Google Patents
Detection circuit and driving method, display panel Download PDFInfo
- Publication number
- CN109545118A CN109545118A CN201910040933.6A CN201910040933A CN109545118A CN 109545118 A CN109545118 A CN 109545118A CN 201910040933 A CN201910040933 A CN 201910040933A CN 109545118 A CN109545118 A CN 109545118A
- Authority
- CN
- China
- Prior art keywords
- data
- signal end
- signal
- data line
- control signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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
Landscapes
- 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)
Abstract
The present invention relates to field of display technology, it is proposed a kind of detection circuit, for realizing the functional check of display panel, display panel includes multiple data lines, there are many sub-pixel units for connection at least partly on data line, detection circuit includes multiple detection units, and detection unit is arranged in a one-to-one correspondence on the data line in connection there are many sub-pixel unit, and detection unit includes multiple data signal ends and multiple switch unit.Multiple data signal ends are used for simultaneously or select one and provide square wave driving signal to data line；Multiple switch unit is arranged in a one-to-one correspondence with data signal end, and switch unit connects data line, data signal end, control signal end, and the significant level signal of square wave driving signal is transferred to data line for the Continuity signal in response to control signal end；Timing of the timing of significant level signal trailing edge earlier than edge after corresponding Continuity signal.The detection circuit that the disclosure provides can be to avoid in display panel functional check, the color cross-talk as caused by data-signal crosstalk.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of detection circuit and driving methods, display panel.
Background technique
Display panel needs to check the functions such as its chromaticity coordinates, luminous efficiency before factory.In the related technology, right
It when display panel carries out functional check, needs to input preset data-signal on the data line of display panel, to realize display
Panel monochrome is shown.
In the related technology, multiple data signal ends, the number and data line of data signal end are connected on every data line
The species number of upper sub-pixel unit is identical.Each data signal end is controlled by a control signal to different types of sub-pixel
Unit input direct-current data-signal, to realize the monochromatic display of display panel.
However, in the related technology, when realizing the display of display panel monochrome by data signal end input data signal, holding
The easily display panel color cross-talk as caused by data-signal crosstalk.
It should be noted that the information in the invention of above-mentioned background technology part is only used for reinforcing the reason to background of the invention
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The purpose of the present invention is to provide a kind of detection circuit and driving methods, display panel.This kind of detection circuit can be with
Avoid the display panel color cross-talk as caused by data-signal crosstalk.
Other characteristics and advantages of the invention will be apparent from by the following detailed description, or partially by the present invention
Practice and acquistion.
According to an aspect of the present invention, a kind of detection circuit is provided, it is described for realizing the functional check of display panel
Display panel includes multiple data lines, and there are many sub-pixel unit, the detection circuits for connection on at least partly described data line
Including multiple detection units, the detection unit is arranged in a one-to-one correspondence on the data line in connection there are many sub-pixel unit, institute
Stating detection unit includes: multiple data signal ends and multiple switch unit.Multiple data signal ends are used for simultaneously or select one to institute
It states data line and square wave driving signal is provided；Multiple switch unit is arranged in a one-to-one correspondence with the data signal end, and the switch is single
Member connects the data line, the data signal end, control signal end, for the Continuity signal in response to the control signal end
The significant level signal of the square wave driving signal is transferred to the data line；Wherein, the significant level signal trailing edge
Timing of the timing earlier than edge after the corresponding Continuity signal.
In a kind of exemplary embodiment of the invention, the display panel include the first data line being successively spaced apart,
Second data line, third data line, first data line is connected with the R sub-pixel being successively spaced apart, B sub-pixel, described
Second data line is connected with the G sub-pixel being sequentially distributed, and the third data line is connected with B sub-pixel, the R being successively spaced apart
Sub-pixel, multiple detection units include first detection unit and second detection unit.First detection unit is set to described
First data line；Second detection unit is set to the third data line.
In a kind of exemplary embodiment of the invention, in the first detection unit, multiple data signal ends include: first
Data signal end, the second data signal end.Multiple switch unit includes: first switch unit and second switch unit.First opens
It closes unit and connects first data signal end, first data line, first control signal end, in response to described first
The significant level signal of first data signal end is transferred to first data line by the Continuity signal of control signal end；The
Two switch units connect second data signal end, first data line, second control signal end, in response to described
The significant level signal of second data signal end is transferred to first data by the Continuity signal at second control signal end
Line.
In a kind of exemplary embodiment of the invention, in the second detection unit, multiple data signal ends include third
Data signal end and the 4th data signal end.Multiple switch unit includes third switch unit and the 4th switch unit.Third is opened
It closes unit and connects the third data signal end, the third data line, third control signal end, in response to the third
The significant level signal of the third data signal end is transferred to the third data line by the Continuity signal of control signal end；The
Four switch units connect the 4th data signal end, the third data line, the 4th control signal end, in response to described
The significant level signal of 4th data signal end is transferred to the third data by the Continuity signal of the 4th control signal end
Line.
In a kind of exemplary embodiment of the invention, the detection circuit further includes the 5th data signal end and the 5th switch
Unit.5th switch unit connects the 5th data signal end, second data line, the 5th control signal end, for ringing
The significant level signal of 5th data signal end is transferred to described by the Continuity signal of the 5th control signal end described in Ying Yu
Second data line.
In a kind of exemplary embodiment of the invention, first data terminal and the third data terminal public first are shared
Data signal end, second data terminal and the 4th data terminal are used for the second shared data signal end.
In a kind of exemplary embodiment of the invention, the first control signal end and the 4th control signal end are shared
Same control signal end, the second control signal end and the third control signal end share same control signal end；It is described
First shared data signal end and the second shared data signal end are for selecting an output square wave driving signal.
In a kind of exemplary embodiment of the invention, the switch unit includes thin film transistor (TFT), the thin film transistor (TFT)
Control terminal connect the control signal end, first end connects data signal end, and second end connects data line.
According to an aspect of the present invention, a kind of detection circuit driving method is provided, for driving above-mentioned detection circuit,
This method comprises:
One is selected using multiple data signal ends or exports square wave driving signal simultaneously；
Using the Continuity signal conducting switch unit of control signal with by the significant level signal of the square wave driving signal
It is transferred to the data line；
Wherein, timing of the timing of the significant level signal trailing edge earlier than edge after the corresponding Continuity signal.
According to an aspect of the present invention, a kind of display panel is provided, which includes above-mentioned detection circuit.
The present invention proposes a kind of detection circuit and driving method, display panel.The detection circuit is for realizing display panel
Functional check, display panel includes multiple data lines, and connection is there are many sub-pixel unit at least partly on data line, detection electricity
Road includes multiple detection units, and detection unit is arranged in a one-to-one correspondence on the data line in connection there are many sub-pixel unit, detection
Unit includes multiple data signal ends and multiple switch unit.Multiple data signal ends are used for simultaneously or select one and provide to data line
Square wave driving signal；Multiple switch unit is arranged in a one-to-one correspondence with data signal end, and switch unit connects data line, data-signal
The significant level signal of square wave driving signal is transmitted for the Continuity signal in response to control signal end in end, control signal end
To data line；Timing of the timing of significant level signal trailing edge earlier than edge after corresponding Continuity signal.On the one hand, after significant level
Within the time to after Continuity signal between, due to switching means conductive, the effective charge on data line can be single by switch
Member is quickly transferred to data signal end, so as to avoid color cross-talk caused by data-signal crosstalk；On the other hand, detection electricity
Line structure is simple, and cost is relatively low.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.It should be evident that the accompanying drawings in the following description is only the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is a kind of structure chart of detection circuit under dot structure in the related technology；
Fig. 2 is a kind of timing diagram of each signal end of detection circuit in the related technology；
Fig. 3 is a kind of structural schematic diagram of exemplary embodiment of disclosure detection circuit；
Fig. 4 is the timing diagram of each signal end in a kind of exemplary embodiment of disclosure detection circuit；
Fig. 5 is the timing diagram of each signal end in disclosure detection circuit another kind exemplary embodiment；
Fig. 6 is a kind of flow chart of exemplary embodiment of disclosure detection circuit driving method.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be real in a variety of forms
It applies, and is not understood as limited to example set forth herein；On the contrary, these embodiments are provided so that the present invention will more comprehensively and
Completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical appended drawing reference indicates in figure
Same or similar structure, thus the detailed description that them will be omitted.
Although the term of relativity, such as "upper" "lower" is used to describe a component of icon for another in this specification
The relativeness of one component, but these terms are in this manual merely for convenient, for example, with reference to the accompanying drawings described in show
The direction of example.It is appreciated that, if making it turn upside down the device overturning of icon, the component described in "upper" will
As the component in "lower".Term of other relativities, such as "high" " low " "top" "bottom" " left side " " right side " etc. are also made to have similar
Meaning.When certain structure is at other structures "upper", it is possible to refer to that certain structural integrity is formed in other structures, or refer to certain structure
It is " direct " to be arranged in other structures, or refer to that certain structure is arranged in other structures by the way that another structure is " indirect ".
Term "one", " one ", " described " to indicate there are one or more elements/component part/etc.；Term " packet
Include " and " having " to indicate the open meaning being included and refer to that the element/component part/in addition to listing waits it
Outside also may be present other element/component part/etc..
In the related technology, display panel needs to check the functions such as its chromaticity coordinates, luminous efficiency before factory.Right
It when display panel carries out functional check, needs to input preset data-signal on the data line of display panel, to realize display
Panel monochrome is shown.As shown in Figure 1, for the structure chart of detection circuit under a kind of dot structure in the related technology.In the pixel of Fig. 1
In structure, display panel includes data line S1, S2, the S3 being successively spaced apart, and data line S1 is connected with multiple spaced R
Sub-pixel and B sub-pixel；Data line S2 is connected with multiple G sub-pixels；Data line S3 is connected with multiple spaced B sub-pixels
With R sub-pixel；And on a same row, the sub-pixel on data line S1 and the sub-pixel variety classes on data line S3.Number in Fig. 1
According to connection on line S1, there are two switch element T1 and T2, the control terminal of switch element T1 to be connected with first control signal end SW-R,
First end connects the first data signal end D-R, and second end connects data line S1；Switch element T2 control terminal connection the second control letter
Number end SW-B, first end connect the second data signal end D-B, second end connect data line S1.Switch is connected on data line S2
The control terminal of element T3, switch element T3 are connect with third control signal end SW-G, and first end and third data signal end D-G connect
It connects, second end is connect with data line S2.It is connected with switch element T4 and T5 on data line S3, the control terminal of switch element T4 and the
One control signal end SW-R connection, first end are connect with the second data signal end D-B, and second end is connect with data line S3；Switch
Element T5 control terminal is connect with second control signal end SW-B, and first end is connect with the first data signal end D-R, second end and number
According to line S3 connection.
As shown in Fig. 2, for a kind of timing diagram of each signal end of detection circuit in the related technology, Fig. 2 gives display surface
When plate shows pure color feux rouges, the timing diagram of each signal end.In Fig. 2, when D-R expression connects the signal of the first data signal end D-R
Sequence figure；D-B indicates the timing diagram of the second data signal end D-B signal；The timing of D-G expression third data signal end D-G signal；
SW-R is the timing diagram of first control signal end SW-R signal；SW-B is the timing diagram of second control signal end SW-B signal；SW-
The timing of G expression third control signal end SW-G signal；AADR is to believe in first control signal end SW-R signal and the first data
Under number end D-R signal function on data line S1 signal timing diagram；AADG is the signal and third of third control signal end SW-G
Under the signal function of data signal end D-G on data line S2 signal timing；AADB is in second control signal end SW-B signal
With under the first data signal end D-R signal function on data line S3 signal timing.Pixel-driving circuit in the display panel
It shines under the effect of low level data-signal.As shown in Fig. 2, D-R signal exports low electricity when display panel shows pure color feux rouges
Straight flow signal, D-B and D-G signal end issue high level direct current signal.Display panel is in scanning the first row line1 in Fig. 1
When pixel unit, for each signal end timing as shown in ROW1 in Fig. 2, first control signal end SW-R exports low level signal, opens
It closes element T1 to be connected under the effect of SW-R low level signal, so that the low level signal on the first data signal end D-R be transmitted
Onto data line S1, R sub-pixel for emitting light in Fig. 1 in the first row line1 sub-pixel, other B sub-pixels and G sub-pixel are not sent out
Light.Display panel is when scanning the second row line2 sub-pixel unit in Fig. 1, each signal end timing as shown in ROW2 in Fig. 2,
Second control signal end SW-B exports low level signal, and switch element T4 is connected under the effect of SW-B low level signal, thus will
Low level signal on first data signal end D-R is transferred on data line S3, R in Fig. 1 in the second row line2 sub-pixel
Pixel light emission, other B sub-pixels and G sub-pixel do not shine.And so on, under signal sequence effect, display panel can be with
Issue pure color feux rouges.Similarly, which can be sent out pure color green light and pure color blue light, so that display panel carries out function
It checks.
However, as shown in Fig. 2, data line S1 is first when display panel is scanned the first row sub-pixel unit
The effect of signal end D-R low level is lower to have low level, the low level signal on data line S1 can after switch element T1 shutdown by
Gradually move back electricity.However due on data line S1 to move back electric speed slower, as shown in the t1 stage in Fig. 2, the second row on a display panel
When sub-pixel unit is scanned by gate driving circuit, low level is still maintained on data line S1, at this point, data line S1 upper second
Row B sub-pixel unit can shine under the effect of data line S1 low level, so as to cause color cross-talk.Similarly, due to data line
It is slower to move back electric speed, when display panel issues pure color blue light, can still there are problems that color cross-talk.It should be noted that by
In being only connected with G sub-pixel unit on data line S2, therefore the display panel is when showing pure color green light, is not in color
Cross-interference issue.
The color string that the display panel that above-mentioned the relevant technologies simply show a kind of dot structure occurs in Function detection
Disturb the analysis of problem.It can be seen that in the display panel of any dot structure according to above-mentioned the relevant technologies, as long as same data
There are many sub-pixel units for connection on line, can go out when carrying out Function detection to display panel using above-mentioned function detecting method
Existing color cross-talk problem.
Based on this, the present exemplary embodiment provides a kind of detection circuit, for realizing the functional check of display panel, institute
Stating display panel includes multiple data lines, and there are many sub-pixel unit, the detection electricity for connection on at least partly described data line
Road includes multiple detection units, and the detection unit is arranged in a one-to-one correspondence on the data line in connection there are many sub-pixel unit,
The detection unit includes: multiple data signal ends and multiple switch unit.Multiple data signal ends for simultaneously or select one to
The data line provides square wave driving signal；Multiple switch unit is arranged in a one-to-one correspondence with the data signal end, the switch
Unit connects the data line, the data signal end, control signal end, for the conducting letter in response to the control signal end
Number the significant level signal of the square wave driving signal is transferred to the data line；Wherein, the significant level signal trailing edge
Timing earlier than edge after the corresponding Continuity signal timing.Wherein, significant level signal is luminous level signal, effectively
Level signal can may be low level for high level.
The present exemplary embodiment proposes a kind of detection circuit.The detection circuit for realizing display panel functional check,
Display panel includes multiple data lines, and there are many sub-pixel units for connection at least partly on data line, and detection circuit includes multiple
Detection unit, detection unit are arranged in a one-to-one correspondence on the data line in connection there are many sub-pixel unit, and detection unit includes more
A data signal end and multiple switch unit.Multiple data signal ends are used for simultaneously or select one and provide square wave driving letter to data line
Number；Multiple switch unit is arranged in a one-to-one correspondence with data signal end, and switch unit connects data line, data signal end, control letter
Number end, the significant level signal of square wave driving signal is transferred to data line for the Continuity signal in response to control signal end；
Timing of the timing of significant level signal trailing edge earlier than edge after corresponding Continuity signal.On the one hand, conducting is arrived on edge after significant level
In time between signal trailing edge, due to switching means conductive, the effective charge on data line can quickly be turned by switch unit
Data signal end is moved on to, so as to avoid color cross-talk caused by data-signal crosstalk；On the other hand, the detection circuit structure letter
Single, cost is relatively low.
Above-mentioned detection circuit is applied to the display panel of dot structure shown in FIG. 1 by the present exemplary embodiment first, with
The detection circuit is described in detail.
It as described in Figure 3, is a kind of structural schematic diagram of exemplary embodiment of disclosure detection circuit.As shown in figure 3, this is aobvious
Show that panel includes the first data line S11 being successively spaced apart, the second data line S12, third data line S13, first number
The R sub-pixel being successively spaced apart, B sub-pixel are connected with according to line S11, the second data line S12 is connected with the G being sequentially distributed
Sub-pixel, the third data line S13 are connected with the B sub-pixel being successively spaced apart, R sub-pixel, and are located at in a line the
One data line S11 is different from the sub-pixel type on third data line S13.Multiple detection units may include the first detection
Unit and second detection unit.First detection unit is set to the first data line S11；Second detection unit is set to described
Third data line S13.
Wherein, in the first detection unit, multiple data signal ends may include: the first data signal end D1, second
Data signal end D2.Multiple switch unit includes: first switch unit T11 and second switch unit T12.First switch unit
T11 connection the first data signal end D1, the first data line S11, first control signal end SW1, in response to institute
The significant level signal of the first data signal end D1 is transferred to described by the Continuity signal for stating first control signal end SW1
One data line S11；Second switch unit T12 connection the second data signal end D2, first data line, the second control letter
Number end SW2, for the Continuity signal in response to the second control signal end SW2 by the effective of the second data signal end D2
Level signal is transferred to the first data line S11.
In the second detection unit, multiple data signal ends include third data signal end D3 and the 4th data signal end
D4.Multiple switch unit includes third switch unit T13 and the 4th switch unit T14.Third switch unit T13 connection described
Three data signal end D3, the third data line, third control signal end SW3, in response to the third control signal end
The significant level signal of the third data signal end D3 is transferred to the third data line by the Continuity signal of SW3；4th opens
Close unit T14 connection the 4th data signal end D4, the third data line, the 4th control signal end SW4, be used in response to
The significant level signal of the 4th data signal end D4 is transferred to described by the Continuity signal of the 4th control signal end SW4
Third data line S13.
In the present exemplary embodiment, the detection circuit can also include the 5th data signal end D5 and the 5th switch unit
T15.5th switch unit T15 connection the 5th data signal end D5, the second data line S12, the 5th control signal end
SW5, for the Continuity signal in response to the 5th control signal end SW5 by the significant level of the 5th data signal end D5
Signal is transferred to the second data line S12.
In the present exemplary embodiment, display panel shines under the effect of low level data-signal, therefore above-mentioned switch list
Member can choose as P-type TFT.It should be understood that in other exemplary embodiments, switch unit can be with
It is selected as N-type TFT.
As shown in figure 4, for the timing diagram of each signal end in a kind of exemplary embodiment of disclosure detection circuit.Wherein,
ADD1 is the timing diagram of signal on the first data line S11；ADD2 is the timing diagram of signal on the second data line S12；ADD3 is
The timing diagram of signal on three data line S13.In Fig. 3, the first data signal end D1 and third data signal end D3 can share one
Data signal end, the second data signal end D2 and the 4th data signal end D4 can share a data signal end.In Fig. 4, first
Data signal end D1 is identical as the signal sequence of third data signal end D3；Second data signal end D2 and the 4th data signal end
The signal sequence of D4 is identical.Second control signal end SW2 and third control signal end SW3 persistently export high level signal.First
Data signal end D1, the second data signal end D2, third data signal end D3, the 4th data signal end D4 while lasting output side
Wave driving signal, the 5th data signal end D5 persistently export high level direct current signal.The first row pixel column line1 in Fig. 3, respectively
The timing of a signal end is as shown in ROW1 in Fig. 4, and the first signal end SW1 exports low level Continuity signal, by the first data
The significant level signal that low level is believed on signal end D1 is transferred to the first data line S11, so that on the first data line S11
R sub-pixel for emitting light, while not shining with the other kinds of sub-pixel of a line.The second row line2 in Fig. 3, each signal
The timing at end is as shown in ROW2 in Fig. 4, and fourth signal end SW exports low level Continuity signal, by the 4th data signal end D4
The significant level signal of upper low level letter is transferred to third data line S13, so that the R sub-pixel on third data line S13
It shines, while not shining with the other kinds of sub-pixel of a line.And so on, it may be implemented to control the display panel sending red
Pure light.Wherein, as shown in figure 4, the timing of the significant level signal trailing edge earlier than after the corresponding Continuity signal edge when
Sequence, the effective charge after significant level within the time to after Continuity signal between, due to switching means conductive, on data line
It can be quickly transferred to data signal end by switch unit, so as to avoid color cross-talk caused by data-signal crosstalk.
It should be noted that the timing of significant level signal leading edge both can earlier than the timing in corresponding Continuity signal forward position,
The timing in corresponding Continuity signal forward position can also be later than.Signal by adjusting data signal end or control signal end can control
Display panel shows the pure color light of other colors.
As shown in figure 5, for the timing diagram of each signal end in disclosure detection circuit another kind exemplary embodiment.Its
In, ADD1 is the timing diagram of signal on the first data line S11；ADD2 is the timing diagram of signal on the second data line S12；ADD3 is
The timing diagram of signal on third data line S13.First data signal end D1 and third data signal end D3 persistently exports square wave letter
Number, the second data signal end D2, the 4th data signal end D4, the 5th signal end D5 persistently export high level signal.5th signal
Control terminal persistently exports high level signal.In detection circuit shown in Fig. 3, the first data signal end D1 and third data-signal
End D3 can share same data signal end, and the first data signal end D1 is identical as the signal sequence of third data signal end D3；
Second data signal end D2 and the 4th data signal end D4 can share same data signal end, the second data signal end D2 and
The signal sequence of four data signal end D4 is identical.First control signal end SW1 and fourth signal control terminal SW4 can share same
Control signal end, first control signal end SW1 are identical as the signal sequence of fourth signal control terminal SW4；Second control signal end
SW2 and third signal control terminal SW3 can share same control signal end, and second control signal end SW2 and third signal control
Hold the signal sequence of SW3 identical.In Fig. 3 the first row line1, each signal end timing is as shown in figure 5, the first signal end SW1
Low level Continuity signal is exported, the significant level signal that low level on the first data signal end D1 is believed is transferred to the first number
According to line S11, so that the R sub-pixel for emitting light on the first data line S11, while not sent out with the other kinds of sub-pixel of a line
Light.The second row line2 in Fig. 3, for the timing of each signal end as shown in ROW2 in Fig. 5, fourth signal end SW exports low electricity
The significant level signal that low level on third data signal end D3 is believed is transferred to third data line S13 by flat Continuity signal,
So that the R sub-pixel for emitting light on third data line S13, while not shining with the other kinds of sub-pixel of a line.Successively
Analogize, may be implemented to control the display panel the red pure light of sending.Wherein, as shown in figure 5, the significant level signal trailing edge when
Sequence earlier than edge after the corresponding Continuity signal timing, after significant level within the time to after Continuity signal between, by
It can be quickly transferred to data signal end by switch unit in the effective charge on switching means conductive, data line, to avoid
Color cross-talk caused by data-signal crosstalk.It should be noted that the timing of significant level signal leading edge both can be earlier than leading
The timing in messenger forward position can also be later than the timing in Continuity signal forward position.By adjusting data signal end or control signal end
Signal can control the pure color light that display panel shows other colors.
It should be understood that can be seen that in the display panel of any dot structure according to above-mentioned the relevant technologies, as long as
There are many sub-pixel units for connection on same data line, will appear color cross-talk when carrying out Function detection to display panel and ask
Topic.The detection circuit that the present exemplary embodiment provides can also be applied to other dot structures, these belong to the disclosure
Protection scope.
The present exemplary embodiment also provides a kind of detection circuit driving method, for driving above-mentioned detection circuit, such as Fig. 6
It is shown, it is a kind of flow chart of exemplary embodiment of disclosure detection circuit driving method.This method comprises:
Step S1: one is selected using multiple data signal ends or exports square wave driving signal simultaneously；
Step S2: using the Continuity signal conducting switch unit of control signal with by effective electricity of the square wave driving signal
Ordinary mail number is transferred to the data line；
Wherein, timing of the timing of the significant level signal trailing edge earlier than edge after the corresponding Continuity signal.
The detection circuit driving method and above-mentioned detection circuit technical characteristic having the same and working principle, above content
It has been be described in detail that, details are not described herein again.
The present exemplary embodiment also provides a kind of display panel, which includes above-mentioned detection circuit.
The display panel and above-mentioned detection circuit technical characteristic having the same and working principle, above content have been made
It is described in detail, details are not described herein again.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
His embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Adaptive change follow the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure or
Conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by claim
It points out.
It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and
And various modifications and changes may be made without departing from the scope thereof.The scope of the present disclosure is only limited by the attached claims.
Claims (10)
1. a kind of detection circuit, for realizing the functional check of display panel, the display panel includes multiple data lines, at least
There are many sub-pixel units for connection on the data line of part, which is characterized in that and the detection circuit includes multiple detection units,
The detection unit is arranged in a one-to-one correspondence on the data line in connection there are many sub-pixel unit, and the detection unit includes:
Multiple data signal ends, for simultaneously or select one to the data line provide square wave driving signal；
Multiple switch unit is arranged in a one-to-one correspondence with the data signal end, and the switch unit connects the data line, described
Data signal end, control signal end, for the Continuity signal in response to the control signal end by the square wave driving signal
Significant level signal is transferred to the data line；
Wherein, timing of the timing of the significant level signal trailing edge earlier than edge after the corresponding Continuity signal.
2. detection circuit according to claim 1, which is characterized in that the display panel includes be successively spaced apart
One data line, the second data line, third data line, first data line are connected with the R sub-pixel being successively spaced apart, B
Pixel, second data line be connected with the G sub-pixel being sequentially distributed, and the third data line, which is connected with, to be successively spaced apart
B sub-pixel, R sub-pixel, and on a same row, first data line and the sub-pixel on the third data line be not of the same race
Class, multiple detection units include:
First detection unit is set to first data line；
Second detection unit is set to the third data line.
3. detection circuit according to claim 2, which is characterized in that in the first detection unit, multiple data-signals
End includes:
First data signal end；
Second data signal end；
Multiple switch unit includes:
First switch unit connects first data signal end, first data line, first control signal end, for ringing
The significant level signal of first data signal end is transferred to described by the Continuity signal at first control signal end described in Ying Yu
First data line；
Second switch unit connects second data signal end, first data line, second control signal end, for ringing
The significant level signal of second data signal end is transferred to described by the Continuity signal at second control signal end described in Ying Yu
First data line.
4. detection circuit according to claim 3, which is characterized in that in the second detection unit, multiple data-signals
End includes:
Third data signal end；
4th data signal end；
Multiple switch unit includes:
Third switch unit connects the third data signal end, the third data line, third control signal end, for ringing
The significant level signal of the third data signal end is transferred to described by the Continuity signal of third control signal end described in Ying Yu
Third data line；
4th switch unit connects the 4th data signal end, the third data line, the 4th control signal end, for ringing
The significant level signal of 4th data signal end is transferred to described by the Continuity signal of the 4th control signal end described in Ying Yu
Third data line.
5. detection circuit according to claim 2, which is characterized in that the detection circuit further include:
5th data signal end；
5th switch unit connects the 5th data signal end, second data line, the 5th control signal end, for ringing
The significant level signal of 5th data signal end is transferred to described by the Continuity signal of the 5th control signal end described in Ying Yu
Second data line.
6. detection circuit according to claim 4, which is characterized in that first data terminal and the third data terminal are public
Totally first shared data signal end, second data terminal and the 4th data terminal are used for the second shared data signal end.
7. detection circuit according to claim 6, which is characterized in that the first control signal end and the 4th control
Signal end shares same control signal end, and the second control signal end and the third control signal end share same control and believe
Number end；
The first shared data signal end and the second shared data signal end are for selecting an output square wave driving signal.
8. detection circuit according to claim 1, which is characterized in that the switch unit includes thin film transistor (TFT), described
The control terminal of thin film transistor (TFT) connects the control signal end, and first end connects data signal end, and second end connects data line.
9. a kind of detection circuit driving method, for driving the described in any item detection circuits of claim 1-8, feature exists
In, comprising:
One is selected using multiple data signal ends or exports square wave driving signal simultaneously；
Using the Continuity signal conducting switch unit of control signal to transmit the significant level signal of the square wave driving signal
To the data line；
Wherein, timing of the timing of the significant level signal trailing edge earlier than edge after the corresponding Continuity signal.
10. a kind of display panel, which is characterized in that including the described in any item detection circuits of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040933.6A CN109545118B (en) | 2019-01-16 | 2019-01-16 | Detection circuit, driving method and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040933.6A CN109545118B (en) | 2019-01-16 | 2019-01-16 | Detection circuit, driving method and display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109545118A true CN109545118A (en) | 2019-03-29 |
| CN109545118B CN109545118B (en) | 2022-04-15 |
Family
ID=65835585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910040933.6A Active CN109545118B (en) | 2019-01-16 | 2019-01-16 | Detection circuit, driving method and display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109545118B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109887455A (en) * | 2019-04-26 | 2019-06-14 | 京东方科技集团股份有限公司 | A kind of display panel and display device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW550535B (en) * | 2001-02-09 | 2003-09-01 | Sanyo Electric Co | Signal detecting device |
| CN1731205A (en) * | 2005-08-31 | 2006-02-08 | 友达光电股份有限公司 | Test circuit for panel display device |
| KR20060113089A (en) * | 2005-04-29 | 2006-11-02 | 엘지.필립스 엘시디 주식회사 | Transistor array substrate for display device |
| CN104933979A (en) * | 2015-07-20 | 2015-09-23 | 京东方科技集团股份有限公司 | Detecting circuit, detecting method and displaying device |
| EP2983036A1 (en) * | 2014-08-07 | 2016-02-10 | LG Display Co., Ltd. | Liquid crystal display device and method for testing pixels of the same |
| CN106782238A (en) * | 2016-12-20 | 2017-05-31 | 武汉华星光电技术有限公司 | Detection circuit, detection method and display panel |
| CN107358900A (en) * | 2017-09-15 | 2017-11-17 | 京东方科技集团股份有限公司 | Test display panel and its driving method and preparation method |
| CN107561752A (en) * | 2017-09-28 | 2018-01-09 | 上海天马微电子有限公司 | Array substrate, driving method thereof and display panel |
-
2019
- 2019-01-16 CN CN201910040933.6A patent/CN109545118B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW550535B (en) * | 2001-02-09 | 2003-09-01 | Sanyo Electric Co | Signal detecting device |
| KR20060113089A (en) * | 2005-04-29 | 2006-11-02 | 엘지.필립스 엘시디 주식회사 | Transistor array substrate for display device |
| CN1731205A (en) * | 2005-08-31 | 2006-02-08 | 友达光电股份有限公司 | Test circuit for panel display device |
| EP2983036A1 (en) * | 2014-08-07 | 2016-02-10 | LG Display Co., Ltd. | Liquid crystal display device and method for testing pixels of the same |
| CN104933979A (en) * | 2015-07-20 | 2015-09-23 | 京东方科技集团股份有限公司 | Detecting circuit, detecting method and displaying device |
| CN106782238A (en) * | 2016-12-20 | 2017-05-31 | 武汉华星光电技术有限公司 | Detection circuit, detection method and display panel |
| CN107358900A (en) * | 2017-09-15 | 2017-11-17 | 京东方科技集团股份有限公司 | Test display panel and its driving method and preparation method |
| CN107561752A (en) * | 2017-09-28 | 2018-01-09 | 上海天马微电子有限公司 | Array substrate, driving method thereof and display panel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109887455A (en) * | 2019-04-26 | 2019-06-14 | 京东方科技集团股份有限公司 | A kind of display panel and display device |
| CN109887455B (en) * | 2019-04-26 | 2023-03-10 | 京东方科技集团股份有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109545118B (en) | 2022-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104795041B (en) | A kind of driving method of array base palte, array base palte, display panel and display device | |
| CN108520716B (en) | A kind of pixel circuit unit and driving method, display panel, display device | |
| CN106598327B (en) | Touch-control display driver element circuit, driving method, circuit and display device | |
| US8654069B2 (en) | Display device | |
| CN107195269B (en) | A kind of driving method of the multi-channel gating switch circuit of display panel, display device and display panel | |
| CN1870124B (en) | Liquid crystal display device and electronic apparatus | |
| CN104699355A (en) | Self-contained touch display panel, array substrate thereof and touch device | |
| CN105913791B (en) | Display device, array substrate and its driving method | |
| CN108807485A (en) | Display panel and display device | |
| CN108492777A (en) | Driving method, display panel and the display device of pixel-driving circuit | |
| KR20190121894A (en) | Display device and method for fabricating the same | |
| CN104360556B (en) | A kind of liquid crystal display panel and array base palte | |
| CN107919378A (en) | Display device with emission layer | |
| CN108417172A (en) | Array substrate, display screen and display device | |
| CN106952617A (en) | Pixel-driving circuit and method, display device | |
| CN107544166A (en) | Display device | |
| CN107274844A (en) | Display device | |
| CN109637417A (en) | Display panel and its driving method, display device | |
| CN104699352A (en) | Self-contained touch display panel and array substrate thereof | |
| CN110428778A (en) | Pixel circuit and its driving method and display panel | |
| CN106531108B (en) | Touch-control display panel, driving method and touch control display apparatus | |
| CN106531771A (en) | Display substrate, display panel, display device and pixel driving method | |
| CN106297680A (en) | Display floater | |
| CN109716422A (en) | Display device and electronic equipment | |
| US20190295483A1 (en) | Display panel, display apparatus and driving method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |