CN107274820A - A kind of test circuit and its method of testing, display panel - Google Patents
A kind of test circuit and its method of testing, display panel Download PDFInfo
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- CN107274820A CN107274820A CN201710606157.2A CN201710606157A CN107274820A CN 107274820 A CN107274820 A CN 107274820A CN 201710606157 A CN201710606157 A CN 201710606157A CN 107274820 A CN107274820 A CN 107274820A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
The present invention discloses a kind of test circuit and its method of testing, display panel, it is related to technical field of measurement and test, it is caused the problem of easily causing waste of raw materials, increase production cost to solve in the prior art to test signal transmssion line by the test of VT curves.The test circuit includes：Sub-circuit is tested with the one-to-one n transmission line of n bars transmission lines, the corresponding first transmission line test sub-circuit of the first bars transmission line that n bars transmission lines are divided at least one set of transmission line group, transmission line group is used for：Whether control input signal end is connected with the first end of the first bars transmission line；Corresponding i-th of transmission line test sub-circuit of the i-th bars transmission line in transmission line group is used for：Whether control input signal end is connected with the first end of the i-th bars transmission line.Whether the test circuit that the present invention is provided is used for measurement signal transmission line breaking.
Description
Technical field
The present invention relates to technical field of measurement and test, more particularly to a kind of test circuit and its method of testing, display panel.
Background technology
With continuing to develop for Display Technique, the application of liquid crystal display is more and more extensive, in order to improve liquid crystal display
Production yield, in the production process of liquid crystal display, the product obtained after different kinds of process flow can be carried out accordingly
Test.For example：After to box technique formation display panel, can typically voltage-transmittance curve (VT be carried out to display panel
Curve) test, and the signal transmssion line on display panel is tested with the presence or absence of open circuit conditions, and because VT curves are surveyed
Examination can not only obtain voltage-transmittance curve of display panel, additionally it is possible to while testing out signal transmssion line with the presence or absence of disconnected
Road situation, therefore, tests the VT curves and signal biography for measure display panel simultaneously frequently by VT curves in the prior art
Defeated line whether there is open circuit conditions.
But, due to the optically-active characteristic of liquid crystal in liquid crystal display panel so that display panel must attach polaroid
After can carry out VT curve tests, allow for when tested by VT curves the signal transmssion line that finds in display panel exist it is disconnected
After the problem of road, the waste of the raw material such as polaroid can be caused, causes the increase of production cost.
The content of the invention
It is an object of the invention to provide a kind of test circuit and its method of testing, display panel, for solving existing skill
Signal transmssion line is tested by the test of VT curves in art, caused easily causes waste of raw materials, increase production
The problem of cost.
To achieve these goals, the present invention provides following technical scheme：
The first aspect of the present invention provides a kind of test circuit, and the test circuit is arranged on the non-display area of display panel
Domain, the viewing area of the display panel is provided with n bars transmission lines, and the test circuit includes passing with the n bars
The defeated one-to-one n transmission line test sub-circuit of line, wherein n >=1；
The n bars transmission line is divided into the first bars transmission at least one set of transmission line group, the transmission line group
The corresponding first transmission line test sub-circuit of line, respectively with control signal input, trigger signal input, input signal end
And the first end connection of the first bars transmission line, first transmission line, which tests sub-circuit, to be used for：In the control
Under the control of signal input part processed and the trigger signal input, the input signal end is controlled to be passed with first bars
Whether the first end of defeated line connects；Corresponding i-th of transmission line test son electricity of the i-th bars transmission line in the transmission line group
Road, it is the second end respectively with the i-th -1 bars transmission line in the control signal input, the transmission line group, described defeated
Enter the first end connection of signal end and the i-th bars transmission line, i-th of transmission line test sub-circuit is used for：
Under the control at the second end of the control signal input and i-th -1 bars transmission line, the input signal end is controlled
Whether it is connected with the first end of the i-th bars transmission line, wherein i >=2；The last item signal in the transmission line group is passed
Second end of defeated line and output signal test lead corresponding with transmission line group connection.
Further, first transmission line test sub-circuit includes：First input control unit and the first input are single
Member；Wherein, the first input control unit, respectively with the control signal input, the trigger signal input and institute
The connection of the first input block is stated, under the control of the control signal input and the trigger signal input, controlling
Whether the trigger signal input is connected with first input block；First input block, respectively with input signal
The first end of end and the first bars transmission line is connected, under the control of the described first input control unit, controlling
Whether the input signal end is connected with the first end of the first bars transmission line；
I-th of transmission line test sub-circuit includes：I-th input control unit and the i-th input block；Wherein, it is described
I-th input control unit, respectively with the control signal input, the second end of i-th -1 bars transmission line and described
I-th input block is connected, for the control at the control signal input and the second end of i-th -1 bars transmission line
Under, control whether the second end of i-th -1 bars transmission line is connected with i-th input block；I-th input is single
Member, respectively the first end with input signal end and the i-th bars transmission line be connected, for single in the described i-th input control
Under the control of member, control whether the input signal end is connected with the first end of the i-th bars transmission line.
Further, the first input control unit includes the first controlling switch pipe and the first trigger switch pipe, described
First input block includes the first input switch pipe；Wherein, the grid and the control signal of the first controlling switch pipe are defeated
Enter end connection, the first of the grid of the first trigger switch pipe and the first trigger switch pipe is extremely defeated with the trigger signal
Enter end connection, the second pole of the first trigger switch pipe is connected with the first pole of the first controlling switch pipe；Described first
The grid of input switch pipe is connected with the second pole of the first controlling switch pipe, the first pole of the first input switch pipe and institute
The connection of input signal end is stated, the second pole of the first input switch pipe is connected with the first end of the first bars transmission line；
The i-th input control unit includes the i-th controlling switch pipe and the i-th trigger switch pipe, the i-th input block bag
Include the i-th input switch pipe；Wherein, the grid of the i-th controlling switch pipe is connected with the control signal input, and described i-th
First the second end extremely with i-th -1 bars transmission line of the grid of trigger switch pipe and the i-th trigger switch pipe
Connection, the second pole of the i-th trigger switch pipe is connected with the first pole of the i-th controlling switch pipe；I-th input switch
The grid of pipe is connected with the second pole of the i-th controlling switch pipe, and the first pole of the i-th input switch pipe is believed with the input
Number end connection, the second pole of the i-th input switch pipe is connected with the first end of the i-th bars transmission line.
Further, the n bars transmission line includes at least one grid line and at least one data wire, the test electricity
Road includes testing sub-circuit with least one one-to-one grid line of at least one grid line, and is counted with described at least one
According to one-to-one at least one data wire test sub-circuit of line；At least one set of transmission line group include grid line transmission line group and
Data line transfer line group；Wherein, the grid line transmission line group includes at least one grid line, the data line transfer line group bag
Include at least one data wire.
Further, the n bars transmission line includes at least one grid line and at least one data wire, the test electricity
Road includes testing sub-circuit with least one one-to-one grid line of at least one grid line, and is counted with described at least one
According to one-to-one at least one data wire test sub-circuit of line；At least one set of transmission line group includes odd number grid line transmission line
Group, even number grid line transmission line group, odd data line transmission line group and even data line transmission line group；Wherein, the odd number grid line
Transmission line group includes the odd-numbered grid line at least one grid line, the even number grid line transmission line group include it is described at least
Even-numbered grid line in one grid line, it is the strange that the odd data line transmission line group is included at least one data wire
Several data wires, the even data line transmission line group includes the even-numbered data wire at least one data wire.
Based on the technical scheme of above-mentioned test circuit, the second aspect of the present invention provides a kind of display panel, including above-mentioned
Test circuit.
Based on the technical scheme of above-mentioned test circuit, the third aspect of the present invention provides a kind of method of testing, applied to upper
Test circuit is stated, at least one set of transmission line group, the method for testing includes：
In the test period, under the control of control signal input and trigger signal input, first transmission line test
Sub-circuit control input signal end is connected with the first end of the first bars transmission line in the transmission line group；In the control
Under the control at the second end of the i-th -1 bars transmission line in signal input part and the transmission line group, i-th of transmission line test
Sub-circuit controls the input signal end to be connected with the first end of the i-th bars transmission line in the transmission line group；Detection with
The level of the corresponding output signal test lead of the transmission line group；
In non-test period, under the control of the control signal input and the trigger signal input, first
Transmission line test sub-circuit controls the input signal end and the first end of the first bars transmission line to be not connected to；Described
Under the control at the second end of control signal input and i-th -1 bars transmission line, i-th of transmission line tests sub-circuit control
Make the input signal end and the first end of the i-th bars transmission line is not connected to.
Further, when first transmission line test sub-circuit includes the first input control unit and the first input is single
Member, when i-th of transmission line test sub-circuit includes the i-th input control unit and the i-th input block, in the test
Section, under the control of the control signal input and the trigger signal input, the first input control unit control
The trigger signal input is connected with first input block；It is described under the control of the described first input control unit
First input block controls the input signal end to be connected with the first end of the first bars transmission line；In the control letter
Under the control at the second end of number input and i-th -1 bars transmission line, the i-th input control unit control described the
Second end of i-1 bars transmission lines is connected with i-th input block；Under the control of the described i-th input control unit, institute
Stating the i-th input block controls the input signal end to be connected with the first end of the i-th bars transmission line；In the non-test
Period, under the control of the control signal input and the trigger signal input, the first input control unit control
The trigger signal input is made to be not connected to first input block；Under the control of the described first input control unit,
First input block controls the input signal end and the first end of the first bars transmission line to be not connected to；Described
Under the control at the second end of control signal input and i-th -1 bars transmission line, the i-th input control unit control
Second end of i-th -1 bars transmission line is not connected to i-th input block；In the described i-th input control unit
Under control, i-th input block controls the input signal end and the first end of the i-th bars transmission line to be not connected to.
Further, when the described first input control unit includes the first controlling switch pipe and the first trigger switch pipe, institute
When stating the first input block including the first input switch pipe, in the test period, in the control of the trigger signal input
Under, the first trigger switch pipe conducting, under the control of the control signal input, the first controlling switch pipe is led
It is logical, the trigger signal input and the grid of the first input switch pipe are connected, the first input switch pipe is controlled
Conducting, is connected the input signal end and the first end of the first bars transmission line；In the non-test period, in institute
Under the control for stating trigger signal input, the first trigger switch pipe cut-off, under the control of the control signal input,
The first controlling switch pipe cut-off, is not connected to the grid of the trigger signal input and the first input switch pipe, controls
The first input switch pipe cut-off is made, the input signal end and the first end of the first bars transmission line is not connected to.
Further, when the described i-th input control unit includes the i-th controlling switch pipe and the i-th trigger switch pipe, described the
When i input blocks include the i-th input switch pipe, in the test period, at the second end of i-th -1 bars transmission line
Under control, the i-th trigger switch pipe conducting, under the control of the control signal input, the i-th controlling switch pipe is led
It is logical, the second end of i-th -1 bars transmission line is connected with the grid of the i-th input switch pipe, control described i-th is defeated
Enter switching tube conducting, be connected the input signal end and the first end of the i-th bars transmission line；In the non-test
Section, under the control at the second end of i-th -1 bars transmission line, the i-th trigger switch pipe cut-off, in the control letter
Under the control of number input, the i-th controlling switch pipe cut-off, make the second end of i-th -1 bars transmission line with it is described
The grid of i-th input switch pipe is not connected to, and is controlled the i-th input switch pipe cut-off, is made the input signal end and described i-th
The first end of bars transmission line is not connected to.
In the test circuit that the present invention is provided, because test circuit is arranged on the non-display area of display panel, Er Qieneng
It is enough to provide test signal for each signal transmssion line positioned at the viewing area of display panel, then display panel is arranged on by detection
The level of the output signal test lead of non-display area come judge the signal transmssion line in display panel whether have open circuit situation,
Therefore, the signal transmssion line that the test circuit of the invention provided can be in display panel is just surveyed after completing to it
Examination, without being detected again to signal transmssion line after completing the attaching process of polaroid, will waste the possibility of raw material
Property is preferably minimized, and production cost is saved to greatest extent.
Further, since n bars transmission lines are divided at least one set of transmission line group, and in each group transmission line group, second
Bars transmission line is to the corresponding transmission line test sub-circuit of the last item signal transmssion line, by corresponding signal transmssion line
Adjacent upper bars transmission line control, that is, need being total to on adjacent a bars transmission line and control signal input
With that can connect at input signal end with corresponding signal transmssion line under control, it is embodied as corresponding signal transmssion line and survey is provided
Trial signal, therefore, in the test circuit that the present invention is provided, goes here and there equivalent to the signal transmssion line for including one group of transmission line group
It is connected together, when in detecting each group signal transmssion line group with the presence or absence of the signal transmssion line of open circuit, it is only necessary to by every group of signal
Second end of the last item signal transmssion line in transmission line group is connected with to the output signal test lead that should be organized, and passes through inspection
Survey the level of the output signal test lead, it becomes possible to determine the signal transmssion line with the presence or absence of broken string in the group.
Moreover, in test circuit provided in an embodiment of the present invention, including with the signal transmssion line positioned at viewing area one by one
Corresponding transmission line tests sub-circuit, and each transmission line test sub-circuit is connected with input signal end, and for control input letter
Number end provides test signal for corresponding signal transmssion line, therefore, positioned at the test letter of whole signal transmssion lines of viewing area
Number it is to test sub-circuit by corresponding transmission line by input signal end to provide, it is in parallel equivalent to by each signal transmssion line, keep away
Exempted from by all signal transmssion lines be serially connected caused by input impedance it is excessive, the level of output signal test lead can not be effective
The problem of detection.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the present invention, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation of display panel provided in an embodiment of the present invention；
Fig. 2 is the annexation that signal transmssion line provided in an embodiment of the present invention packet and correspondence transmission line test sub-circuit
Basic schematic diagram；
Fig. 3 is the annexation that signal transmssion line provided in an embodiment of the present invention packet and correspondence transmission line test sub-circuit
The first specific schematic diagram；
Fig. 4 is the timing diagram provided in an embodiment of the present invention that open circuit conditions are not present in test period signal transmission line；
Fig. 5 is the timing diagram provided in an embodiment of the present invention that there are open circuit conditions in test period signal transmission line；
Fig. 6 is the timing diagram provided in an embodiment of the present invention in the non-test period；
Fig. 7 is the packet schematic diagram of grid line provided in an embodiment of the present invention；
Fig. 8 is the packet schematic diagram of data wire provided in an embodiment of the present invention；
Fig. 9 is the annexation that signal transmssion line provided in an embodiment of the present invention packet and correspondence transmission line test sub-circuit
The second specific schematic diagram.
Reference：
1- display panels, 2- viewing areas,
3- non-display areas, 4- test circuits,
First transmission line test sub-circuit of 41-, second transmission line test sub-circuit of 42-,
I-th of transmission line test sub-circuit of 4i-, Tin- the i-th input switch pipes,
5- first ends, the ends of 6- second,
The input control units of 7- first, the input blocks of 8- first,
The input control units of 9- i-th, the input blocks of 10- i-th,
First group of grid line transmission line group of 11-, second group of grid line transmission line group of 12-,
First group of data line transfer line group of 13-, second group of data line transfer line group of 14-,
Switch- control signal inputs, Reset- trigger signal inputs,
Input- input signals end, Output- output signal test leads,
First grid line of G1-, G3- Article 3 grid lines,
G (2k-1)-the (2k-1) bar grid line, G (2k+1)-the (2k+1) bar grid line,
X1- the first bars transmission lines, X2- Article 2 signal transmssion lines,
X (i-1)-the (i-1) bars transmission line, Xi- the i-th bars transmission lines,
T1c- the first trigger switch pipes, T2c- the second trigger switch pipes,
The trigger switch pipes of T3c- the 3rd, T (2k+1) c- (2k+1) trigger switch pipe,
Tic- the i-th trigger switch pipes, T1s- the first controlling switch pipes,
T2s- the second controlling switch pipes, the controlling switch pipes of T3s- the 3rd,
T (2k+1) s- (2k+1) controlling switch pipe, Tis- the i-th controlling switch pipes,
T1n- the first input switch pipes, T2n- the second input switch pipes,
T3n- three-input switch pipes, T (2k+1) n- (2k+1) input switch pipe.
Embodiment
In order to further illustrate test circuit provided in an embodiment of the present invention and its method of testing, display panel, tie below
Figure of description is closed to be described in detail.
Fig. 1 and Fig. 2 are referred to, the embodiment of the present invention provides a kind of test circuit 4, and the test circuit 4 is arranged on display surface
The non-display area 3 of plate 1, n bars transmission lines are provided with the viewing area 2 of display panel 1, and test circuit 4 includes and n bars
The one-to-one n transmission line test sub-circuit of signal transmssion line, wherein n >=1.
N bars transmission lines are divided into the first bars transmission line X1 correspondences at least one set of transmission line group, transmission line group
First transmission line test sub-circuit 41, respectively with control signal input Switch, trigger signal input Reset, defeated
The first end 5 for entering signal end Input and the first bars transmission line X1 is connected, and first transmission line test sub-circuit 41 is used
In：Under control signal input Switch and trigger signal input Reset control, control input signal end Input with
Whether the first bars transmission line X1 first end 5 connects；The i-th bars transmission line Xi in transmission line group is corresponding i-th
Transmission line tests sub-circuit 4i, respectively with (i-1) bars transmission line in control signal input Switch, transmission line group
The first end 5 at X (i-1) the second end 6, input signal end Input and the i-th bars transmission line Xi is connected, i-th of transmission line
Test sub-circuit 4i is used for：At control signal input Switch and (i-1) bars transmission line X (i-1) the second end 6
Under control, whether control input signal end Input is connected with the i-th bars transmission line Xi first end 5, wherein i >=2；Transmission
Second end 6 of the last item signal transmssion line in line group and output signal test lead Output corresponding with transmission line group connect
Connect.
When being tested using above-mentioned test circuit 4 signal transmssion line, at least one set of transmission line group, in test
Section, under control signal input Switch and trigger signal input Reset control, first transmission line tests sub-circuit
41 control input signal end Input are connected with the first end 5 of the first bars transmission line X1 in transmission line group；In control signal
Under the control at input Switch and (i-1) bars transmission line X (i-1) in transmission line group the second end 6, i-th of biography
Defeated line test sub-circuit 4i control input signal end Input and the i-th bars transmission line Xi in transmission line group first end 5 connect
Connect；Detection output signal test lead Output corresponding with transmission line group level, as shown in figure 4, in control signal input
Switch, trigger signal input Reset and during the equal input high level signals of input signal end Input, when measurement output signal
Test lead Output level is identical with the level of the input signal end Input test signals inputted, when also for high level signal,
Then illustrate the signal transmssion line that open circuit is not present in the transmission line group.As shown in figure 5, in control signal input Switch, touching
During the equal input high level signals of signalling input Reset and input signal end Input, when measurement output signal test lead
During Output Non voltage output signals, then illustrate there is the signal transmssion line of open circuit in the transmission line group；In the non-test period, such as
Shown in Fig. 6, control signal input Switch, trigger signal input Reset and the equal input low levels of input signal end Input
Signal, under control signal input Switch and trigger signal input Reset control, first transmission line test son electricity
The control input signal end Input of road 41 and the first bars transmission line X1 first end 5 are not connected to；In control signal input
Under the control at Switch and (i-1) bars transmission line X (i-1) the second end 6, i-th of transmission line test sub-circuit 4i control
Input signal end Input processed and the i-th bars transmission line Xi first end 5 are not connected to so that in the non-test period, each signal is passed
Between defeated line independently of one another, gate driving circuit and control chip that can be on display panel be controlled, it is ensured that display surface
Plate 1 can realize normal display function.
The structure of the test circuit 4 provided according to above-described embodiment, and signal transmssion line is entered using the test circuit 4
The process of row test is understood, in test circuit 4 provided in an embodiment of the present invention, and each bars transmission line corresponds to a transmission
Line tests sub-circuit, and each transmission line test sub-circuit provides test signal for corresponding signal transmssion line, by n bars transmission lines
It is divided at least one set of transmission line group, corresponding n transmission line test sub-circuit is divided into corresponding extremely with least one set of transmission line group
Few one group of transmission line test sub-circuit group.In one group of transmission line test sub-circuit group, first transmission line tests sub-circuit 41
Can under control signal input Switch and trigger signal input Reset control, control input signal end Input with
Whether the first bars transmission line X1 first end 5 connects, and then controls whether to provide test for the first bars transmission line X1
Signal, and in this group of transmission line test sub-circuit group, other transmission lines in addition to first transmission line test sub-circuit 41 are surveyed
Swab circuit, be in control signal input Switch, and with the corresponding signal of current demand signal transmission line test sub-circuit
Second end 6 of the adjacent upper bars transmission line (the adjacent upper bars transmission line in same transmission line group) of transmission line
Under control, the first end 5 of control input signal end Input signal transmssion lines corresponding with current demand signal transmission line test sub-circuit
Whether connect, and then control whether to provide test letter for signal transmssion line corresponding with current demand signal transmission line test sub-circuit
Number.
Because the test circuit 4 that provides of the present invention is arranged on the non-display area 3 of display panel 1, and can be positioned at
Each signal transmssion line of the viewing area of display panel 1 provides test signal, then by detection to be arranged on display panel 1 non-display
Whether the output signal test lead Output in region 3 level has breaking feelings come the signal transmssion line judged in display panel 1
Condition, therefore, test circuit 4 provided in an embodiment of the present invention can be after the signal transmssion line in display panel 1 complete just
It is tested, it is former by wasting without being detected again to signal transmssion line after completing the attaching process of polaroid
The possibility of material is preferably minimized, and production cost is saved to greatest extent.
Further, since n bars transmission lines are divided at least one set of transmission line group, and in each group transmission line group, second
Bars transmission line X2 is transmitted to the corresponding transmission line test sub-circuit of the last item signal transmssion line by corresponding signal
The control of the adjacent upper bars transmission line of line, that is, need a bars transmission line and control signal input on adjacent
Input signal end Input can be connected with corresponding signal transmssion line, be embodied as corresponding under Switch co- controlling
Signal transmssion line provides test signal, therefore, in test circuit 4 provided in an embodiment of the present invention, equivalent to by one group of transmission line
The signal transmssion line that group includes is serially connected, and the signal with the presence or absence of open circuit in detection each group signal transmssion line group is passed
During defeated line, it is only necessary to by the second end 6 of the last item signal transmssion line in every group of signal transmssion line group with it is defeated to what should be organized
Go out the Output connections of signal testing end, and by detecting output signal test lead Output level, it becomes possible to determine the group
In with the presence or absence of broken string signal transmssion line.
Moreover, in test circuit 4 provided in an embodiment of the present invention, including with the signal transmssion line positioned at viewing area one by one
Corresponding transmission line tests sub-circuit, and each transmission line test sub-circuit is connected with input signal end Input, and defeated for controlling
Enter signal end Input and provide test signal for corresponding signal transmssion line, therefore, whole signal transmssion lines positioned at viewing area
Test signal be to test sub-circuit by corresponding transmission line by input signal end Input to provide, equivalent to by each signal
Transmit line parallel, it is to avoid input impedance is excessive caused by all signal transmssion lines are serially connected, output signal test lead
Output level can not effective detection the problem of.
It should be noted that signal, the trigger signal input Reset of above-mentioned control signal input Switch inputs are defeated
Signal, the signal of input signal end Input inputs entered can use existing working signal on display panel, for example：Open
Voltage signal is closed, the switching voltage signal includes high level signal (VGH signals) and low level signal (VGL signals).And
The non-test period, can be in the non-test in order to thoroughly avoid influences of the input signal end Input to display panel normal work
Input signal end Input is connected by the period with ground wire.In addition, the last item signal transmssion line in each transmission line group with it is corresponding
The Output connections of output signal test lead so that the signal exported by the second end 6 of the last item signal transmssion line is easier
Detection, and then cause test circuit provided in an embodiment of the present invention to be conducive to popularization and application.
For the test circuit 4 that clearer explanation above-described embodiment is provided, it is given below corresponding with one group of transmission line group
Each transmission line test sub-circuit concrete structure and connected mode.
As shown in figure 3, first transmission line test sub-circuit 41 that above-described embodiment is provided includes：First input control is single
The input block 8 of member 7 and first；Wherein, first input control unit 7 respectively with control signal input Switch, trigger signal
Input Reset and the first input block 8 are connected, in control signal input Switch and trigger signal input
Under Reset control, whether control trigger signal input Reset is connected with the first input block 8；First 8 points of input block
First end 5 not with input signal end Input and the first bars transmission line X1 is connected, for inputting control unit 7 first
Control under, whether control input signal end Input is connected with the first bars transmission line X1 first end 5.
I-th of transmission line test sub-circuit 4i that above-described embodiment is provided includes：I-th input control unit 9 and i-th is inputted
Unit 10；Wherein, i-th input control unit 9 respectively with control signal input Switch, (i-1) bars transmission line X
(i-1) the second end 6 and the i-th input block 10 is connected, in control signal input Switch and (i-1) bars biography
Under the control at the second end 6 of defeated line X (i-1), control (i-1) bars transmission line X (i-1) the second end 6 and the i-th input are single
Whether member 10 connects；First end 5 of i-th input block 10 respectively with input signal end Input and the i-th bars transmission line Xi connects
Connect, under the control of the i-th input control unit 9, the of control input signal end Input and the i-th bars transmission line Xi
Whether one end 5 connects.
Specifically, in the test period, in control signal input Switch and trigger signal input Reset control
Under, the first input control of control unit 7 trigger signal input Reset is connected with the first input block 8；In the first input control
Under the control of unit 7, the control input signal end Input of the first input block 8 and the first bars transmission line X1 first end 5 connect
Connect；Under the control at control signal input Switch and (i-1) bars transmission line X (i-1) the second end 6, the i-th input
Control (i-1) the bars transmission line X of control unit 9 (i-1) the second end 6 is connected with the i-th input block 10；In the i-th input
Under the control of control unit 9, the control input signal end Input of the i-th input block 10 and the i-th bars transmission line Xi first end
5 connections.
In non-test period, under control signal input Switch and trigger signal input Reset control, first
The input control of control unit 7 trigger signal input Reset is not connected to the first input block 8；Control unit 7 is inputted first
Control under, the control input signal end Input of the first input block 8 and the first bars transmission line X1 first end 5 are not connected to；
Under the control at control signal input Switch and (i-1) bars transmission line X (i-1) the second end 6, the i-th input control
Unit 9 processed controls the second end 6 of the i-th -1 bars transmission line to be not connected to the i-th input block 10；Control unit 9 is inputted i-th
Control under, the control input signal end Input of the i-th input block 10 and the i-th bars transmission line Xi first end 5 are not connected to.
It is single for the above-mentioned first input control unit 7, the input input of control unit 9 and i-th of the first input block 8, i-th
The concrete structure of member 10 is varied, and a kind of corresponding concrete structure of each unit and connected mode is given below, certain each list
The corresponding concrete structure of member is not limited to this.
Please continue to refer to Fig. 3, above-mentioned first input control unit 7 includes the triggerings of the first controlling switch pipe T1s and first and opened
Pipe T1c is closed, the first input block 8 includes the first input switch pipe T1n；Wherein, the first controlling switch pipe T1s grid and control
The first of signal input part Switch connections, the first trigger switch pipe T1c grid and the first trigger switch pipe T1c is extremely with touching
The Reset connections of signalling input, the first trigger switch pipe T1c the second pole and the first controlling switch pipe T1s the first pole connect
Connect；First input switch pipe T1n grid is connected with the first controlling switch pipe T1s the second pole, the first input switch pipe T1n's
First pole is connected with input signal end Input, and the of the first input switch pipe T1n the second pole and the first bars transmission line X1
One end 5 is connected.
I-th input control unit 9 includes the i-th controlling switch pipe Tis and the i-th trigger switch pipe Tic, the i-th input block 10
Including the i-th input switch pipe Tin；Wherein, the i-th controlling switch pipe Tis grid is connected with control signal input Switch, the
The first of i trigger switch pipes Tic grid and the i-th trigger switch pipe Tic is extremely with (i-1) bars transmission line X's (i-1)
Second end 6 is connected, and the i-th trigger switch pipe Tic the second pole is connected with the i-th controlling switch pipe Tis the first pole；I-th input is opened
The grid for closing pipe Tin is connected with the i-th controlling switch pipe Tis the second pole, and the i-th input switch pipe Tin the first pole and input are believed
Number end Input connections, the i-th input switch pipe Tin the second pole is connected with the i-th bars transmission line Xi first end 5.
The course of work of the test circuit 4 of above-mentioned concrete structure is：
In the test period, under trigger signal input Reset control, the first trigger switch pipe T1c conductings, in control
Under signal input part Switch control, the first controlling switch pipe T1s conductings make trigger signal input Reset and first defeated
Enter switch transistor T 1n grid connection, control the first input switch pipe T1n conductings make input signal end Input and the first bars
Transmission line X1 first end 5 is connected；Under the control at (i-1) bars transmission line X (i-1) the second end 6, the i-th triggering is opened
Pipe Tic conductings are closed, under control signal input Switch control, the i-th controlling switch pipe Tis conductings make (i-1) bar letter
Number transmission line X (i-1) the second end 6 is connected with the i-th input switch pipe Tin grid, control the i-th input switch pipe Tin conductings,
It is connected input signal end Input and the i-th bars transmission line Xi first end 5.
In the non-test period, under trigger signal input Reset control, the first trigger switch pipe T1c cut-offs, in control
Under signal input part Switch processed control, the first controlling switch pipe T1s cut-offs make trigger signal input Reset and first
Input switch pipe T1n grid is not connected to, control the first input switch pipe T1n cut-offs, makes input signal end Input and first
Signal transmssion line X1 first end 5 is not connected to.In the non-test period, at (i-1) bars transmission line X (i-1) the second end 6
Control under, the i-th trigger switch pipe Tic cut-off, under control signal input Switch control, the i-th controlling switch pipe Tis
Cut-off, the second end 6 and the i-th input switch pipe Tin grid for making (i-1) bars transmission line X (i-1) is not connected to, and is controlled
I-th input switch pipe Tin ends, and is not connected to input signal end Input and the i-th bars transmission line Xi first end 5.
Above-mentioned i-th input control unit 9 can also only include the i-th controlling switch pipe Tis, correspondence the i-th control in this case
Switch transistor T is processed the first pole directly can be connected with (i-1) bars transmission line X (i-1) the second end 6, this structure
I-th input control unit 9 reduces a switching tube relative to the above-mentioned structure including the i-th trigger switch pipe Tic, is more beneficial for
The narrow frame of display device.Certainly the structure that above-mentioned i-th input control unit 9 includes the i-th trigger switch pipe Tic also has its excellent
Gesture, because the first input control unit 7 includes the first trigger switch pipe T1c, the i-th input control unit 9 is arranged to and first
The identical structure of control unit 7 is inputted, it is more convenient when carrying out Array Design to display device.
It is worth noting that, for the annexation of clearer display transmission line test sub-circuit and signal transmssion line,
Given in Fig. 2 as i=2, i.e., second transmission line tests the annexation of sub-circuit 42, second transmission line test
The first end 5 respectively with Article 2 signal transmssion line X2 of sub-circuit 42, the first bars transmission line X1 the second end 6, control letter
Number input Switch and the Input connections of input signal end.Second transmission line test sub-circuit 42 is given in Fig. 3 to be included
Second trigger switch pipe T2c, the second controlling switch pipe T2s and the second input switch pipe T2n, and the connection of each switching tube are closed
System.Give corresponding with Article 3 grid line G3 transmission line test sub-circuit in Fig. 9, and with (2k+1) article grid line G (2k
+ 1) concrete structure and annexation of corresponding transmission line test sub-circuit, specifically, transmission corresponding with Article 3 grid line G3
Line test sub-circuit includes the 3rd trigger switch pipe T3c, the 3rd controlling switch pipe T3s and three-input switch pipe T3n, with the
The corresponding transmission line test sub-circuits of (2k+1) article grid line G (2k+1) include (2k+1) trigger switch pipe T (2k+1) c, (2k
+ 1) controlling switch pipe T (2k+1) s and (2k+1) input switch pipe T (2k+1) n.
Furthermore, it is necessary to explanation, in the present embodiment with each trigger switch pipe, each controlling switch pipe and each input switch
Manage as N-type transistor, and the first extremely source electrode, second extremely drain exemplified by illustrate.Above-mentioned each trigger switch pipe, each control
Switching tube and each input switch pipe can also be P-type transistor, and each trigger switch pipe, each controlling switch pipe and each input switch
The circuit design for P-type transistor is managed also within protection scope of the present invention.In addition, defining each bar letter for convenience
Number transmission line is first end 5 close to one end of corresponding transmission line test sub-circuit, and the other end is the second end 6, certainly not
It is only limitted to this.
It is worth noting that, the packet mode of the above-mentioned n bars transmission lines positioned at the viewing area of display panel 1 can root
Selected according to being actually needed, also, it is preferred that, each bars transmission line only belongs to one group of transmission line group, when n bars is passed
Defeated line include at least one grid line and at least one data wire when, test circuit 4 include it is corresponding with least one grid line at least
One grid line tests sub-circuit, and at least one data wire corresponding with least one data wire test sub-circuit.N bars are believed
When number transmission line is divided at least one set of transmission line group, optionally, n bars transmission lines can be divided into one group of transmission line group, should
One group of transmission line group includes whole grid lines and all of data lines；Or, as shown in fig. 7, n bars transmission lines are included
Whole grid lines are divided into two parts, and a portion grid line is used as first group of grid line transmission line group 11, another part grid line conduct
Second group of grid line transmission line group 12, as shown in figure 8, whole data wires that n bars transmission lines include are divided into two parts,
A portion data wire is used as second group of data line transfer as first group of data line transfer line group 13, another part data wire
Line group 14.
In addition, it is optional, n bars transmission lines can be divided into two groups of transmission line groups so that at least one set of transmission
Line group includes grid line transmission line group and data wire transmission line group, and wherein grid line transmission line group includes at least one grid line (the n bars
Whole grid lines that signal transmssion line includes) data line transfer line group include at least one data wire (n bars transmission line bags
The all of data lines included)；Or, n bars transmission lines can be divided into four groups of transmission line groups so that at least one set of transmission
Line group includes odd number grid line transmission line group, even number grid line transmission line group, odd data line transmission line group and the transmission of even data line
Line group, wherein the odd number grid line transmission line group includes at least one grid line (whole grid that n bars transmission lines include
Line) in odd-numbered grid line, the even number grid line transmission line group include at least one grid line (n bars transmission line bags
The whole grid lines included) in even-numbered grid line, the odd data line transmission line group include at least one data wire (n
The all of data lines that bars transmission line includes) in odd-numbered data wire, the even data line transmission line group include institute
State the even-numbered data wire at least one data wire (all of data lines that n bars transmission lines include).
Specifically, referring to Fig. 9, by taking odd number grid line transmission line group as an example, odd number grid line transmission line group includes first
Grid line G1, Article 3 grid line G3 are to (2k+1) article grid line G (2k+1), and the first bars in the odd number grid line transmission line group is passed
Defeated line X1 is first grid line G1, and the Article 2 signal transmssion line X2 in the odd number grid line transmission line group is Article 3 grid line
Article 3 signal transmssion line in G3, the odd number grid line transmission line group is Article 5 grid line, and the rest may be inferred.
The specific test process of the odd number grid line transmission line group is：
In test period, under control signal input Switch and trigger signal input Reset control, first
The transmission line test control input signal end Input of sub-circuit 41 is connected with first grid line G1 first end 5；It is defeated in control signal
Under the control at the second end 6 for entering to hold Switch and (2k-1) article grid line G (2k-1), (2k+1) individual transmission line test sub-circuit
Control input signal end Input is connected with (2k+1) article grid line G (2k+1) first end 5；Detection is corresponding with the transmission line group
Output signal test lead Output level.
In non-test period, under control signal input Switch and trigger signal input Reset control, first
The individual transmission line test control input signal end Input of sub-circuit 41 and first grid line G1 first end 5 is not connected to；In control letter
Under the control at number input Switch and (2k-1) article grid line G (2k-1) the second end 6, (2k+1) individual transmission line test
Circuit control input signal end Input and (2k+1) article grid line G (2k+1) first end 5 are not connected to.
The embodiment of the present invention additionally provides a kind of display panel, and the display panel 1 includes the test that above-described embodiment is provided
Circuit 4, above-mentioned test circuit 4 is arranged on the non-display area 3 of display panel 1, in the display positioned at display panel 1 that completes
After the n bars transmission lines in region 2, the open circuit conditions of n bars transmission lines can be directly tested by the test circuit 4, and
Signal transmssion line need not be detected again after completing the attaching process of polaroid, the possibility for wasting raw material is dropped to
It is minimum, production cost is saved to greatest extent.
The embodiment of the present invention additionally provides a kind of method of testing, the test circuit 4 provided applied to above-described embodiment, for
At least one set of transmission line group, the method for testing includes：
In test period, under control signal input Switch and trigger signal input Reset control, first
Transmission line tests the control input signal end Input of sub-circuit 41 and the first bars transmission line X1 in transmission line group first end
5 connections；The second end 6 of (i-1) bars transmission line X (i-1) in control signal input Switch and transmission line group
Control under, i-th transmission line test sub-circuit 4i control input signal end Input are passed with the i-th bars in transmission line group
Defeated line Xi first end 5 is connected；Detection output signal test lead Output corresponding with transmission line group level.
In non-test period, under control signal input Switch and trigger signal input Reset control, first
Individual transmission line test the control input signal end Input of sub-circuit 41 and the first bars transmission line X1 first end 5 are not connected to；
Under the control at control signal input Switch and (i-1) bars transmission line X (i-1) the second end 6, i-th of transmission line
Test sub-circuit 4i control input signal end Input and the i-th bars transmission line Xi first end 5 are not connected to.
Because method of testing provided in an embodiment of the present invention is realized using above-mentioned test circuit 4, therefore, with above-mentioned
The technique effect that test circuit 4 can be realized, i.e., method of testing provided in an embodiment of the present invention can be in display panel 1
Signal transmssion line is just tested it after completing, without when completing again to pass signal after the attaching process of polaroid
Defeated line is detected, the possibility for wasting raw material is preferably minimized, production cost is saved to greatest extent.
And in the test circuit 4 provided due to above-described embodiment, equivalent to the signal for including one group of transmission line group
Transmission line is serially connected, by the second end 6 of the last item signal transmssion line in every group of signal transmssion line group with to should
The output signal test lead Output connections of group, when implementing method of testing provided in an embodiment of the present invention, by detecting that this is defeated
Go out signal testing end Output level, it becomes possible to determine the signal transmssion line with the presence or absence of broken string in the group.
Further, since above-described embodiment provide test circuit 4 in, including with the signal transmssion line one positioned at viewing area
One corresponding transmission line test sub-circuit, each transmission line test sub-circuit is connected with input signal end Input, and for controlling
Input signal end Input provides test signal for corresponding signal transmssion line, therefore, and whole signals positioned at viewing area are transmitted
The test signal of line is to test sub-circuit by corresponding transmission line by input signal end Input to provide, therefore, using this hair
It is in parallel equivalent to by each signal transmssion line during the breaking problem for the method for testing test signal transmission lines that bright embodiment is provided, keep away
Exempted from input impedance caused by all signal transmssion lines are serially connected excessive, output signal test lead Output level without
The problem of method effective detection.
When first transmission line test sub-circuit 41 includes the first input input block 8 of control unit 7 and first, i-th
When transmission line test sub-circuit 4i includes the i-th input control unit 9 and the i-th input block 10, the test that above-described embodiment is provided
Method is specifically included：
In the test period, under control signal input Switch and trigger signal input Reset control, first is defeated
Enter the control of control unit 7 trigger signal input Reset to be connected with the first input block 8；In the control of the first input control unit 7
Under system, the control input signal end Input of the first input block 8 is connected with the first bars transmission line X1 first end 5；In control
Under the control at signal input part Switch and (i-1) bars transmission line X (i-1) the second end 6, the i-th input control unit 9
Control (i-1) bars transmission line X (i-1) the second end 6 is connected with the i-th input block 10；Control unit 9 is inputted i-th
Control under, the control input signal end Input of the i-th input block 10 is connected with the i-th bars transmission line Xi first end 5.
In non-test period, under control signal input Switch and trigger signal input Reset control, first
The input control of control unit 7 trigger signal input Reset is not connected to the first input block 8；Control unit 7 is inputted first
Control under, the control input signal end Input of the first input block 8 and the first bars transmission line X1 first end 5 are not connected to；
Under the control at control signal input Switch and (i-1) bars transmission line X (i-1) the second end 6, the i-th input control
Second end 6 of control (i-1) the bars transmission line X of unit 9 (i-1) processed is not connected to the i-th input block 10；In the i-th input
Under the control of control unit 9, the control input signal end Input of the i-th input block 10 and the i-th bars transmission line Xi first end
5 are not connected to.
Opened when the first input control unit 7 that above-described embodiment is provided includes the triggerings of the first controlling switch pipe T1s and first
Pipe T1c is closed, the first input block 8 includes the first input switch pipe T1n, and the i-th input control unit 9 includes the i-th controlling switch pipe
Tis and the i-th trigger switch pipe Tic, when the i-th input block 10 includes the i-th input switch pipe Tin, the survey that above-described embodiment is provided
Method for testing is specifically included：
In the test period, under trigger signal input Reset control, the first trigger switch pipe T1c conductings, in control
Under signal input part Switch control, the first controlling switch pipe T1s conductings make trigger signal input Reset and first defeated
Enter switch transistor T 1n grid connection, control the first input switch pipe T1n conductings make input signal end Input and the first bars
Transmission line X1 first end 5 is connected；Under the control at (i-1) bars transmission line X (i-1) the second end 6, the i-th triggering is opened
Pipe Tic conductings are closed, under control signal input Switch control, the i-th controlling switch pipe Tis conductings make (i-1) bar letter
Number transmission line X (i-1) the second end 6 is connected with the i-th input switch pipe Tin grid, control the i-th input switch pipe Tin conductings,
It is connected input signal end Input and the i-th bars transmission line Xi first end 5；
In the non-test period, under trigger signal input Reset control, the first trigger switch pipe T1c cut-offs, in control
Under signal input part Switch processed control, the first controlling switch pipe T1s cut-offs make trigger signal input Reset and first
Input switch pipe T1n grid is not connected to, control the first input switch pipe T1n cut-offs, makes input signal end Input and first
Signal transmssion line X1 first end 5 is not connected to；In the non-test period, at (i-1) bars transmission line X (i-1) the second end 6
Control under, the i-th trigger switch pipe Tic cut-off, under control signal input Switch control, the i-th controlling switch pipe Tis
Cut-off, the second end 6 and the i-th input switch pipe Tin grid for making (i-1) bars transmission line X (i-1) is not connected to, and is controlled
I-th input switch pipe Tin ends, and is not connected to input signal end Input and the i-th bars transmission line Xi first end 5.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for method
Apply for example, because it is substantially similar to product embodiments, so describing fairly simple, related part is referring to product embodiments
Part explanation.
In the description of above-mentioned embodiment, specific features, structure, material or feature can be in any one or many
Combined in an appropriate manner in individual embodiment or example.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of test circuit, it is characterised in that the test circuit is arranged on the non-display area of display panel, the display
The viewing area of panel is provided with n bars transmission lines, and the test circuit includes corresponding with the n bars transmission line
N transmission line test sub-circuit, wherein n >=1,
The n bars transmission line is divided at least one set of transmission line group,
The corresponding first transmission line test sub-circuit of the first bars transmission line in the transmission line group, believes with control respectively
Number input, trigger signal input, the first end connection of input signal end and the first bars transmission line, described the
One transmission line test sub-circuit is used for：Under the control of the control signal input and the trigger signal input, control
Whether the first end for making the input signal end with the first bars transmission line is connected；
Corresponding i-th of transmission line test sub-circuit of the i-th bars transmission line in the transmission line group, respectively with the control
The second end, the input signal end and described of the i-th -1 bars transmission line in signal input part, the transmission line group
The first end connection of i bars transmission lines, i-th of transmission line test sub-circuit is used for：In the control signal input
Under control with the second end of i-th -1 bars transmission line, the input signal end is controlled to be transmitted with i-th bars
Whether the first end of line connects, wherein i >=2；
Second end of the last item signal transmssion line in the transmission line group and output signal corresponding with the transmission line group
Test lead is connected.
2. test circuit according to claim 1, it is characterised in that first transmission line test sub-circuit includes：
First input control unit and the first input block；Wherein,
The first input control unit, respectively with the control signal input, the trigger signal input and described the
One input block is connected, under the control of the control signal input and the trigger signal input, control to be described
Whether trigger signal input is connected with first input block；
First input block, respectively the first end with input signal end and the first bars transmission line be connected, be used for
Under the control of the described first input control unit, the first of the input signal end and the first bars transmission line is controlled
Whether end connects；
I-th of transmission line test sub-circuit includes：I-th input control unit and the i-th input block；Wherein,
It is described i-th input control unit, respectively with the control signal input, i-th -1 bars transmission line second
End and i-th input block connection, for the second of the control signal input and i-th -1 bars transmission line
Under the control at end, control whether the second end of i-th -1 bars transmission line is connected with i-th input block；
I-th input block, respectively the first end with input signal end and the i-th bars transmission line be connected, for
Under the control of the i-th input control unit, the input signal end and the first end of the i-th bars transmission line is controlled to be
No connection.
3. test circuit according to claim 2, it is characterised in that the first input control unit includes the first control
Switching tube and the first trigger switch pipe, first input block include the first input switch pipe；Wherein,
The grid of the first controlling switch pipe is connected with the control signal input,
The first of the grid of the first trigger switch pipe and the first trigger switch pipe extremely inputs with the trigger signal
End connection, the second pole of the first trigger switch pipe is connected with the first pole of the first controlling switch pipe；
The grid of the first input switch pipe is connected with the second pole of the first controlling switch pipe, first input switch
First pole of pipe is connected with the input signal end, and the second pole of the first input switch pipe is transmitted with first bars
The first end connection of line；
The i-th input control unit includes the i-th controlling switch pipe and the i-th trigger switch pipe, and i-th input block includes the
I input switch pipes；Wherein,
The grid of the i-th controlling switch pipe is connected with the control signal input,
The first of the grid of the i-th trigger switch pipe and the i-th trigger switch pipe is extremely transmitted with i-th -1 bars
The second end connection of line, the second pole of the i-th trigger switch pipe is connected with the first pole of the i-th controlling switch pipe；
The grid of the i-th input switch pipe is connected with the second pole of the i-th controlling switch pipe, the i-th input switch pipe
The first pole be connected with the input signal end, the second pole of the i-th input switch pipe and the i-th bars transmission line
First end is connected.
4. the test circuit according to any one of claims 1 to 3, it is characterised in that the n bars transmission line is included extremely
Few a grid line and at least one data wire, the test circuit include and at least one grid line one-to-one at least one
Individual grid line tests sub-circuit, and tests sub-circuit with least one one-to-one data wire of at least one data wire；
At least one set of transmission line group includes grid line transmission line group and data wire transmission line group；Wherein, the grid line transmission line
Group includes at least one grid line, and the data line transfer line group includes at least one data wire.
5. the test circuit according to any one of claims 1 to 3, it is characterised in that the n bars transmission line is included extremely
Few a grid line and at least one data wire, the test circuit include and at least one grid line one-to-one at least one
Individual grid line tests sub-circuit, and tests sub-circuit with least one one-to-one data wire of at least one data wire；
At least one set of transmission line group includes odd number grid line transmission line group, even number grid line transmission line group, the transmission of odd data line
Line group and even data line transmission line group；Wherein, the odd number grid line transmission line group includes the at least one grid line
Odd number bar grid line, the even number grid line transmission line group includes the even-numbered grid line at least one grid line, the odd number
Data line transfer line group includes the odd-numbered data wire at least one data wire, the even data line transmission line group
Including the even-numbered data wire at least one data wire.
6. a kind of display panel, it is characterised in that including the test circuit as described in any one of Claims 1 to 5.
7. a kind of method of testing, it is characterised in that applied to the test circuit as described in any one of Claims 1 to 5, for extremely
Few one group of transmission line group, the method for testing includes：
In the test period, under the control of control signal input and trigger signal input, first transmission line test son electricity
Road control input signal end is connected with the first end of the first bars transmission line in the transmission line group；In the control signal
Under the control at the second end of the i-th -1 bars transmission line in input and the transmission line group, i-th of transmission line test son electricity
Road controls the input signal end to be connected with the first end of the i-th bars transmission line in the transmission line group；Detection with it is described
The level of the corresponding output signal test lead of transmission line group；
In the non-test period, under the control of the control signal input and the trigger signal input, first transmission
Line test sub-circuit controls the input signal end and the first end of the first bars transmission line to be not connected to；In the control
Under the control at the second end of signal input part and i-th -1 bars transmission line, i-th of transmission line test sub-circuit control institute
State input signal end and the first end of the i-th bars transmission line is not connected to.
8. method of testing according to claim 7, it is characterised in that when first transmission line test sub-circuit includes
First input control unit and the first input block, i-th of transmission line test sub-circuit include the i-th input control unit and
During the i-th input block,
In the test period, under the control of the control signal input and the trigger signal input, described first
Input control unit controls the trigger signal input to be connected with first input block；It is single in the described first input control
Under the control of member, first input block controls the input signal end and the first end of the first bars transmission line to connect
Connect；Under the control at the control signal input and the second end of i-th -1 bars transmission line, the i-th input control
Unit processed controls the second end of i-th -1 bars transmission line to be connected with i-th input block；In the described i-th input control
Under the control of unit processed, i-th input block controls the input signal end and the first end of the i-th bars transmission line
Connection；
In the non-test period, under the control of the control signal input and the trigger signal input, described
One input control unit controls the trigger signal input to be not connected to first input block；In the described first input control
Under the control of unit processed, first input block controls the first of the input signal end and the first bars transmission line
End is not connected to；Under the control at the control signal input and the second end of i-th -1 bars transmission line, described i-th
Input control unit controls the second end of i-th -1 bars transmission line to be not connected to i-th input block；Described
Under the control of i input control units, i-th input block controls the input signal end and the i-th bars transmission line
First end be not connected to.
9. method of testing according to claim 8, it is characterised in that when the described first input control unit includes the first control
Switching tube processed and the first trigger switch pipe, when first input block includes the first input switch pipe,
In the test period, under the control of the trigger signal input, the first trigger switch pipe conducting, described
Under the control of control signal input, the first controlling switch pipe conducting makes the trigger signal input and described first
The grid connection of input switch pipe, controls the first input switch pipe conducting, makes the input signal end and described first
The first end connection of signal transmssion line；
In the non-test period, under the control of the trigger signal input, the first trigger switch pipe cut-off, in institute
Under the control for stating control signal input, the first controlling switch pipe cut-off makes the trigger signal input and described the
The grid of one input switch pipe is not connected to, and controls the first input switch pipe cut-off, makes the input signal end and described the
The first end of one bars transmission line is not connected to.
10. method of testing according to claim 8, it is characterised in that when the described i-th input control unit includes the i-th control
Switching tube processed and the i-th trigger switch pipe, when i-th input block includes the i-th input switch pipe,
In the test period, under the control at the second end of i-th -1 bars transmission line, the i-th trigger switch pipe
Conducting, under the control of the control signal input, the i-th controlling switch pipe conducting transmits i-th -1 bars
Second end of line is connected with the grid of the i-th input switch pipe, is controlled the i-th input switch pipe conducting, is made the input
Signal end is connected with the first end of the i-th bars transmission line；
In the non-test period, under the control at the second end of i-th -1 bars transmission line, i-th trigger switch
Pipe ends, under the control of the control signal input, the i-th controlling switch pipe cut-off, passes i-th -1 bars
Second end of defeated line and the grid of the i-th input switch pipe are not connected to, and are controlled the i-th input switch pipe cut-off, are made described
Input signal end and the first end of the i-th bars transmission line are not connected to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710606157.2A CN107274820B (en) | 2017-07-24 | 2017-07-24 | Test circuit, test method thereof and display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN109448616A (en) * | 2018-12-21 | 2019-03-08 | 厦门天马微电子有限公司 | Display panel and display device |
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| CN107274820B (en) | 2020-11-27 |
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