CN106970296B - Display panel, test device and test method - Google Patents
Display panel, test device and test method Download PDFInfo
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- CN106970296B CN106970296B CN201710399519.5A CN201710399519A CN106970296B CN 106970296 B CN106970296 B CN 106970296B CN 201710399519 A CN201710399519 A CN 201710399519A CN 106970296 B CN106970296 B CN 106970296B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electronic Circuits (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
A kind of display panel includes active region and test circuit.It tests circuit and is electrically connected active region.Testing circuit includes the first main switch, the first testing cushion, the second testing cushion and the first operation pad.First testing cushion is electrically connected the first end of the first main switch.Second testing cushion is electrically connected the second end of the first main switch.First operation pad is electrically connected the control terminal of the first main switch.
Description
Technical field
This case is related to a kind of electronic device and method.Specifically, this case is related to a kind of display panel, test device and survey
Method for testing.
Background technique
With the development of science and technology, display panel has been widely used in people's lives.
Display panel needs to be tested before factory.In general, test device can provide test signal using probe extremely
Display panel, to be tested.However, being easy to cause to judge by accident because of poor contact between probe and display panel.Therefore, new survey
Method for testing, which is worked as, to be suggested.
Summary of the invention
One state sample implementation of this case is related to a kind of display panel.According to one embodiment of this case, display panel include active region and
Test circuit.It tests circuit and is electrically connected active region.Testing circuit includes the first main switch, the first testing cushion, the second testing cushion
And first operation pad.First testing cushion is electrically connected the first end of the first main switch.It is main that second testing cushion is electrically connected first
The second end of switch.First operation pad is electrically connected the control terminal of the first main switch.
Another state sample implementation of this case is related to a kind of test device.According to one embodiment of this case, test device includes that voltage mentions
For circuit, feedback comparison circuit and warning system.Circuit for providing voltage is to provide test voltage to the first of display panel
Testing cushion, wherein the first testing cushion is electrically connected the second testing cushion by the first main switch.It feeds back comparison circuit and is electrically connected electricity
Pressure provides circuit, receiving the test voltage from circuit for providing voltage, detects the detection test voltage in the second testing cushion,
And compare test voltage and detection test voltage.Warning system is electrically connected feedback comparison circuit, in test voltage and inspection
In the case where surveying test voltage difference, the first alarm is provided.
Another state sample implementation of this case is related to a kind of test method.According to one embodiment of this case, test method includes: offer survey
The first testing cushion of voltage to display panel is tried, wherein the first testing cushion is electrically connected the second testing cushion by the first main switch；
Detect the detection test voltage in the second testing cushion；Compare test voltage and detection test voltage；And in test voltage and inspection
In the case where surveying test voltage difference, the first alarm is provided.
By applying an above-mentioned embodiment, can quickly judge between test device and display panel whether line anomalies (such as
Poor contact or connection are abnormal etc.).
Below in conjunction with the drawings and specific embodiments, the present invention will be described in detail, but not as a limitation of the invention.
Detailed description of the invention
Fig. 1 is the schematic diagram of the test macro according to depicted in one embodiment of this case；
Fig. 2 is the schematic diagram of the test macro according to depicted in one embodiment of this case；
Fig. 3 is the schematic diagram of the test macro according to depicted in another embodiment of this case；
Fig. 4 is the schematic diagram of the test macro according to depicted in another embodiment of this case；
Fig. 5 is the voltage change figure during the difference according to depicted in one embodiment of this case；And
Fig. 6 is the flow chart of the test method according to depicted in one embodiment of the invention.
Wherein, appended drawing reference
10: test macro
100: display panel
110: active region
120: test circuit
200: test device
210: circuit for providing voltage
220: feedback comparison circuit
230: warning system
PO, PO1, PO2: operation pad
P1: testing cushion
P2: testing cushion
PR: testing cushion
PG: testing cushion
PB: testing cushion
PM: testing cushion
PD: testing cushion
PE: testing cushion
TR: switch
TR0-TR4: switch
OT1-OT2: switch
GO: voltage provides sub-circuit
GR: voltage provides sub-circuit
GB: voltage provides sub-circuit
GD: voltage provides sub-circuit
GT: voltage provides sub-circuit
GE: voltage provides sub-circuit
GO1: voltage provides sub-circuit
GO2: voltage provides sub-circuit
222: comparator
224: comparator
226: comparator
228: comparator
DL: data line
GL: grid line
VCOM: common electrode
XR: pixel circuit
XG: pixel circuit
XB: pixel circuit
CMP1-CMP4: comparison signal
VGH: high voltage level
VGL: high voltage level
PRD1, PRD2: period
300: method
S1-S4: operation
Specific embodiment
Structural principle and working principle of the invention are described in detail with reference to the accompanying drawing:
It will clearly illustrate the spirit of this disclosure with attached drawing and detailed narration below, have in any technical field
Usual skill is after the embodiment for understanding this disclosure, when the technology that can be taught by this disclosure, be changed and
Modification, without departing from the spirit and scope of this disclosure.
About its " first " used herein, " second " ... etc., not especially censure the meaning of order or cis-position, also
It is non-to limit the present invention, only for distinguish with same technique term description element or operation.
About " electric connection " used herein, can refer to two or multiple element mutually directly make entity or be electrically connected with
Touching, or mutually put into effect indirectly body or in electrical contact, and " electric connection " also can refer to two or multiple element mutual operation or movement.
It is open term, i.e., about "comprising" used herein, " comprising ", " having ", " containing " etc.
Mean including but not limited to.
About it is used herein " and/or ", including any of the things or all combination.
About direction term used herein, such as: upper and lower, left and right, front or rear etc. are only with reference to attached drawings
Direction.Therefore, the direction term used is intended to be illustrative and not intended to limit this case.
About word used herein (terms), in addition to having and especially indicating, usually have each word using herein
In field, herein in the content disclosed with the usual meaning in special content.Certain words to describe this exposure will be under
Or discussed in the other places of this specification, to provide those skilled in the art's guidance additional in the description in relation to this exposure.
Fig. 1 is the schematic diagram of the test macro 10 according to depicted in one embodiment of this case.In the present embodiment, test macro
10 include display panel 100 and test device 200.
In this example it is shown that panel 100 includes active region 110 and test circuit 120.Test circuit 120 electrically connects
Connect active region 110 (pixel circuit in such as active region).Test circuit 120 include switch TR, testing cushion P1, testing cushion P2 and
Operation pad PO.The first end of testing cushion P1 electric connection switch TR.The second end of testing cushion P2 electric connection switch TR.Operation pad
The control terminal of PO electric connection switch TR.Testing cushion P1, P2 is electrically connected active region 110 (pixel circuit in such as active region).
In the present embodiment, operation pad PO is to receive the operation voltage for carrying out self-test device 200, and switch TR is according to operation
Voltage (such as tool high voltage level) conducting.In the present embodiment, testing cushion P1 is to receive the test for carrying out self-test device 200
Voltage (such as with high voltage level).When switch TR conducting, testing cushion P1 can provide test voltage to testing cushion P2.
Whereby, test device 200 can be by the voltage (lower be known as detection test voltage) on detection testing cushion P2, and will
Detection test voltage is compared with the test voltage for being provided to testing cushion P1, quickly to judge test device 200 and display surface
Between plate 100 whether line anomalies (such as poor contact or connection abnormal).For example, providing operation voltage in test device 200
To operation pad PO, and in the case where providing test voltage to testing cushion P1, when detecting test voltage and test voltage difference, just
Judge line anomalies；When detection test voltage is identical as test voltage, just judge that route is normal.
In one embodiment, test device 200 includes circuit for providing voltage 210, feedback comparison circuit 220 and warning system
230.In one embodiment, feedback comparison circuit 220 is electrically connected circuit for providing voltage 210.In one embodiment, warning system
230 are electrically connected feedback comparison circuit 220.
In one embodiment, circuit for providing voltage 210 is to generate and provide test voltage to testing cushion P1 and feedback ratio
Compared with circuit 220.In one embodiment, circuit for providing voltage 210 is also to generate and provide operation voltage to operation pad PO.One
In embodiment, circuit for providing voltage 210 is, for example, to pad P1 and operation pad PO by row's needle engaged test to be electrically connected, so
This case is not limited.
In one embodiment, feedback comparison circuit 220 is examined to receive the test voltage from circuit for providing voltage 210
The detection test voltage on testing cushion P2 is surveyed, and compares test voltage and detection test voltage.In one embodiment, feedback compares
Circuit 220 generates to the comparison result according to test voltage and detection test voltage and provides comparison signal to warning system
230.In one embodiment, feedback comparison circuit 220 is, for example, and pads P2 and testing cushion P2 by row's needle engaged test electrically to connect
It connects, but not limited to this.
In one embodiment, warning system 230 provides alarm (such as sending out a warning) according to comparison signal.In one embodiment,
Warning system 230 can provide alarm in the case where test voltage is different from detection test voltage.
Whereby, can quickly judge between test device 200 and display panel 100 whether line anomalies.
In one embodiment of this case, before the functional test (such as lighting test) for carrying out display panel 100, test device
200 can first provide operation voltage (as provided high voltage level) to operation pad PO, with carry out route whether Yi Chang test.
If warning system 230 does not provide alarm, represent between test device 200 and display panel 100 that route is normal, then surveys
Trial assembly sets 200 stoppings and provides operation voltage (being such as changed to provide low-voltage level) to operation pad PO, to turn off the switch TR, and then
Carry out the functional test (such as lighting test) of display panel 100.
If warning system 230 provides alarm, possible line anomalies between test device 200 and display panel 100 are represented, then
Manager can further be detectd mistake.
Fig. 2 is the schematic diagram of the test macro 10 according to depicted in one embodiment of this case.
In the present embodiment, it is provided with the pixel circuit XR, XG being arranged in matrix in active region 110, XB, puts down each other
Capable data line DL, gate lines G L and common electrode VCOM parallel to each other.In one embodiment, pixel circuit XR is for example, red
It is, for example, blue pixel circuit that color pixel circuit, pixel circuit XG, which are, for example, green pixel circuit, pixel circuit XB, however this case
It is not limited.It should be noted that the quantity of pixel circuit XR, XG, XB, data line DL, gate lines G L can all change according to actual needs
Become, therefore this case is not limited with this embodiment.
In the present embodiment, test circuit 120 includes testing cushion PR, testing cushion PG, testing cushion PB, testing cushion PM, test
Pad PD, testing cushion PE, operation pad PO, switch TR1, switch TR2 and switch TR3.
In the present embodiment, testing cushion PR is electrically connected the first end of switch TR1, and is electrically connected one by data line DL
Row pixel circuit XR.Testing cushion PG is electrically connected the second end of switch TR1, and is electrically connected one-row pixels electricity by data line DL
Road XG.The control terminal of switch TR1 is electrically connected operation pad PO.
In the present embodiment, testing cushion PB is electrically connected the first end of switch TR2, and is electrically connected one by data line DL
Row pixel circuit XB.Testing cushion PM is electrically connected the second end of switch TR2, and is electrically connected common electrode VCOM.Switch TR2's
Control terminal is electrically connected operation pad PO.
In the present embodiment, testing cushion PD is electrically connected the first end of switch TR3, and is electrically connected odd column gate lines G L
(such as first, third column gate lines G L).Testing cushion PE is electrically connected the second end of switch TR3, and is electrically connected even column grid
Line GL (such as secondary series gate lines G L).The control terminal of switch TR3 is electrically connected operation pad PO.
In some patterns, the testing cushion P1 in Fig. 1 can be that the testing cushion P2 in testing cushion PR, Fig. 1 in Fig. 3 can be figure
Switch TR in testing cushion PG, Fig. 1 in 2 can be the switch TR1 in Fig. 2 and the operation pad PO in Fig. 1 can be the behaviour in Fig. 2
Make pad PO.
In other patterns, the testing cushion P1 in Fig. 1 can be that the testing cushion P2 in testing cushion PB, Fig. 1 in Fig. 2 can be
Switch TR in testing cushion PM, Fig. 1 in Fig. 2 can be the switch TR2 in Fig. 2 and the operation pad PO in Fig. 1 can be in Fig. 2
Operation pad PO.
In other patterns, the testing cushion P1 in Fig. 1 can be that the testing cushion P2 in testing cushion PD, Fig. 1 in Fig. 2 can be
Switch TR in testing cushion PE, Fig. 1 in Fig. 2 can be the switch TR3 in Fig. 2 and the operation pad PO in Fig. 1 can be in Fig. 2
Operation pad PO.
Also that is, using above-mentioned setting, test device 200 (can be examined by the voltage on detection testing cushion PG, PM, PE
Survey test voltage), and will test test voltage respectively and be compared with the test voltage for being provided to testing cushion PR, PB, PD, with fast
Speed judge between test device 200 and display panel 100 whether line anomalies.
Operation voltage (such as high voltage level) is provided to operation pad PO, to be connected switch TR1-TR3's in test device 200
In the case of, when the test voltage (such as high voltage level) for being provided to testing cushion PR is different from the detection detected on self-test pad PG
When test voltage, when the test voltage (such as high voltage level) for being provided to testing cushion PB is different from detecting on self-test pad PM
PE is padded when detecting test voltage and/or when the test voltage (such as high voltage level) for being provided to testing cushion PD is different from self-test
On detect detection test voltage when, test device 200 judges line anomalies between test device 200 and display panel 100.Phase
Over the ground, when the test voltage for being provided to testing cushion PR is identical to the detection test voltage detected on self-test pad PG, when mentioning
The test voltage for being supplied to testing cushion PB is identical to when the detection test voltage detected on PM is padded in self-test and works as to be provided to test
When the test voltage of pad PD is identical to the detection test voltage detected on self-test pad PE, the judgement test dress of test device 200
It is normal to set route between 200 and display panel 100.
In the present embodiment, circuit for providing voltage 210 may include voltage provide sub-circuit GO, voltage provide sub-circuit GR,
Voltage provides sub-circuit GB, voltage provides sub-circuit GD.In the present embodiment, feedback comparison circuit 220 include comparator 222,
Comparator 224 and comparator 226.
In the present embodiment, voltage provides sub-circuit GO to generate and provide operation voltage to operation pad PO.In this reality
It applies in example, voltage provides sub-circuit GR to generate and provide test voltage to testing cushion PR and comparator 222.In the present embodiment
In, voltage provides sub-circuit GB to generate and provide test voltage to testing cushion PB and comparator 224.In the present embodiment,
Voltage provides sub-circuit GD to generate and provide test voltage to testing cushion PD and comparator 226.In one embodiment, voltage
There is provided sub-circuit GO, GR, GB, GD e.g. respectively by row needle touch operation pad PO, testing cushion PR, PG, PB respectively with behaviour
Make pad PO, testing cushion PR, PG, PB electric connection, right this case is not limited.
In the present embodiment, comparator 222 provides the test voltage of sub-circuit GR, detection test from voltage to receive
The detection test voltage on PG is padded, and is compared and is provided the test voltage of sub-circuit GR from voltage and detected on testing cushion PG
Detection test voltage.Then, comparator 222 generates according to comparison result and provides comparison signal CMP1 to warning system
230。
In the present embodiment, comparator 224 provides the test voltage of sub-circuit GB, detection test from voltage to receive
The detection test voltage on PM is padded, and is compared and is provided the test voltage of sub-circuit GB from voltage and detected on testing cushion PM
Detection test voltage.Then, comparator 224 generates according to comparison result and provides comparison signal CMP2 to warning system
230。
In the present embodiment, comparator 226 provides the test voltage of sub-circuit GD, detection test from voltage to receive
The detection test voltage on PE is padded, and is compared and is provided the test voltage of sub-circuit GD from voltage and detected on testing cushion PE
Detection test voltage.Then, comparator 226 generates according to comparison result and provides comparison signal CMP3 to warning system
230。
In one embodiment, comparator 222,224,226 e.g. pads PG, PM, PE by row's needle engaged test respectively
It is electrically connected respectively with testing cushion PG, PM, PE, but not limited to this.
In one embodiment, warning system 230 provides alarm (such as sending out a warning) according to comparison signal CMP1, CMP2, CMP3.
In one embodiment, warning system 230 can provide the test voltage of sub-circuit GR from voltage and detect on testing cushion PG
To detection test voltage it is different in the case where, provide the test voltage of sub-circuit GB from voltage and detected on testing cushion PM
The test voltage of sub-circuit GD is provided in the case that the detection test voltage arrived is different and/or from voltage and in testing cushion PE
On the detection test voltage that detects it is different in the case where alarm is provided.
Whereby, can quickly judge between test device 200 and display panel 100 whether line anomalies.
In one embodiment of this case, before the functional test (such as lighting test) for carrying out display panel 100, test device
200 can first provide operation voltage (as provided high voltage level) to operation pad PO, with carry out route whether Yi Chang test.
If warning system 230 does not provide alarm, represent between test device 200 and display panel 100 that route is normal, then surveys
Trial assembly sets 200 stoppings and provides operation voltage (be such as changed to provide low-voltage level) to operation pad PO, to turn off the switch TR1-TR3,
And then carry out the functional test (such as lighting test) of display panel 100.
If warning system 230 provides alarm, possible line anomalies between test device 200 and display panel 100 are represented, then
Manager can further be detectd mistake.
Fig. 3 is the schematic diagram of the test macro 10 according to depicted in one embodiment of this case.Test macro in the present embodiment
Portion of element in 10 is similar to the element in the test macro 10 in Fig. 2, therefore this will not be repeated here for duplicate part.
In the present embodiment, test circuit 120 includes testing cushion PR, testing cushion PG, testing cushion PB, testing cushion PM, test
Pad PD, testing cushion PE, operation pad T1, operation pad T2, switch TR0, switch TR1, switch TR2 and switch TR3.Wherein, testing cushion
The phase of PR, testing cushion PG, testing cushion PB, testing cushion PM, testing cushion PD, testing cushion PE, switch TR1, switch TR2 and switch TR3
Closing details substantially can refer to aforementioned paragraphs, therefore this will not be repeated here.
In the present embodiment, operation pad T1 is electrically connected the first end and control terminal of switch TR0.Operation pad T2 is electrically connected
The second end of switch TR0 and the control terminal of switch TR1-TR3.In the present embodiment, operation pad T1 passes through switch TR0 and operation pad
T2 is electrically connected the control terminal of switch TR1-TR3.
In some patterns, the testing cushion P1 in Fig. 1 can be that the testing cushion P2 in testing cushion PR, Fig. 1 in Fig. 3 can be figure
Switch TR in testing cushion PG, Fig. 1 in 3 can be similar to for the function of the switch TR1 in Fig. 3 and the operation pad PO in Fig. 1
Operation pad T1 in Fig. 3.
In other patterns, the testing cushion P1 in Fig. 1 can be that the testing cushion P2 in testing cushion PB, Fig. 1 in Fig. 3 can be
Switch TR in testing cushion PM, Fig. 1 in Fig. 3 can be similar for the function of the switch TR2 in Fig. 3 and the operation pad PO in Fig. 1
Operation pad T1 in Fig. 3.
In some patterns, the testing cushion P1 in Fig. 1 can be that the testing cushion P2 in testing cushion PD, Fig. 1 in Fig. 3 can be figure
Switch TR in testing cushion PE, Fig. 1 in 3 can be similar to for the function of the switch TR3 in Fig. 3 and the operation pad PO in Fig. 1
Operation pad T1 in Fig. 3.
Also that is, using above-mentioned setting, test device 200 (can be examined by the voltage on detection testing cushion PG, PM, PE
Survey test voltage), and will test test voltage respectively and be compared with the test voltage for being provided to testing cushion PR, PB, PD, with fast
Speed judge between test device 200 and testing cushion PR, PG, PB, PM, PD, PE of display panel 100 whether line anomalies.
Operation voltage (such as high voltage level) is provided in test device 200 to go forward side by side to operation pad T1 switch TR0 is connected
In the case that switch TR1-TR3 is connected in one step, when the test voltage (such as high voltage level) for being provided to testing cushion PR is different from certainly
When the detection test voltage detected on testing cushion PG, when test voltage (such as high voltage level) difference for being provided to testing cushion PB
When the detection test voltage detected on self-test pad PM and/or when test voltage (such as high voltage for being provided to testing cushion PD
Level) be different from self-test pad PE on detect detection test voltage when, test device 200 judge test device 200 with show
Show line anomalies between testing cushion PR, PG, PB, PM, PD, PE of panel 100.Relatively, when the test electricity for being provided to testing cushion PR
When pressure is identical to the detection test voltage detected on self-test pad PG, when the test voltage for being provided to testing cushion PB is identical to oneself
When the detection test voltage detected on testing cushion PM and when the test voltage for being provided to testing cushion PD is identical to self-test pad PE
On detect detection test voltage when, test device 200 judge test device 200 and display panel 100 testing cushion PR,
Route is normal between PG, PB, PM, PD, PE.
On the other hand, using above-mentioned setting, test device 200 also (can call inspection in the following text by the voltage on detection operation pad T2
Survey operation voltage), and will test operation voltage respectively and be compared with the operation voltage being provided on operation pad T1, quickly to sentence
Between disconnected test device 200 and operation pad T1, the operation pad T2 of display panel 100 whether line anomalies.
For example, providing operation voltage (such as high voltage level) to operation pad T1, switch TR0 is connected in test device 200
In the case where, when the detection operation voltage detected on operation pad T2 is different from the operation voltage being provided on operation pad T1
When, test device 200 judges line anomalies between the operation pad T1 of test device 200 and display panel 100, operation pad T2.When
When the detection operation voltage detected on operation pad T2 is identical as the operation voltage being provided on operation pad T1, test device 200
Route is normal between judging operation pad T1, the operation pad T2 of test device 200 and display panel 100.
In the present embodiment, circuit for providing voltage 210 may include voltage provide sub-circuit GT, voltage provide sub-circuit GR,
Voltage provides sub-circuit GB, voltage provides sub-circuit GD.In the present embodiment, feedback comparison circuit 220 include comparator 222,
Comparator 224, comparator 226 and comparator 228.Wherein, voltage provides sub-circuit GR, voltage provides sub-circuit GB, voltage mentions
It substantially can refer to aforementioned paragraphs for the correlative detail of sub-circuit GD, comparator 222, comparator 224 and comparator 226, therefore herein
It does not repeat.
In the present embodiment, voltage provides sub-circuit GT to generate and provide operation voltage to operation pad T1 and comparator
228.In the present embodiment, comparator 228 provides the operation voltage of sub-circuit GT from voltage to receive, and detects operation pad T2
On detection operate voltage, and compare and provide the operation voltage of sub-circuit GT and the inspection that detects on operation pad T2 from voltage
Survey operation voltage.Then, comparator 228 generates according to comparison result and provides comparison signal CMP4 to warning system 230.?
In one embodiment, voltage provides sub-circuit GT and comparator 228 and e.g. pads T1, T2 difference by row's needle touch operation respectively
It is electrically connected with operation pad T1, T2, right this case is not limited.
In the present embodiment, warning system 230 provides the first alarm (such as azarin according to comparison signal CMP1, CMP2, CMP3
Lamp).In one embodiment, warning system 230 can be in the test voltage from voltage offer sub-circuit GR and on testing cushion PG
The test voltage of sub-circuit GB is provided in the case that the detection test voltage detected is different, from voltage and on testing cushion PM
In the case that the detection test voltage detected is different and/or the test voltage of sub-circuit GD is provided from voltage and is being tested
In the case that the detection test voltage detected on pad PE is different, the first alarm is provided.
In addition, in the present embodiment, warning system 230 provides the second alarm (such as bright orange lamp) according to comparison signal CMP4.
In one embodiment, warning system 230 can provide the operation voltage of sub-circuit GT from voltage and detect on operation pad T2
To detection operation voltage it is different in the case where the second alarm is provided, the second alarm is different from the first alarm.
By the first alarm and the second alarm, can quickly judge between test device 200 and operation pad T1, T2 whether is route
Whether route is abnormal between abnormal and test device 200 and testing cushion PR, PG, PB, PM, PD, PE.
Following table be route between the first alarm and the second alarm and test device 200 and operation pad T1, T2 in an embodiment (under
Claim measurement circuit) whether route (calls data line in the following text between abnormal and test device 200 and testing cushion PR, PG, PB, PM, PD, PE
Road) whether Yi Chang relationship.
As it appears from the above, representing data circuit in the case where warning system 230 does not provide the first alarm and the second alarm
It is all normal with measurement circuit.The first alarm is not provided in the case where the second alarm of offer in warning system 230, represents number
According to route, normal and measurement circuit is abnormal.Warning system 230 provide the first alarm, without provide the second alarm the case where
Under, data circuit exception is represented, and measurement circuit is normal.The case where warning system 230 provides the first alarm and the second alarm
Under, represent measurement circuit exception.In the case, the operation voltage from operation pad T1 may not be received because of operation pad T2,
And switch TR1-TR3 be connected can not, cause warning system 230 provide the first alarm, therefore data circuit it is normal whether still to
Confirmation.
In one embodiment of this case, before the functional test (such as lighting test) for carrying out display panel 100, test device
200 can first provide operation voltage (as provided high voltage level) to operation pad T1, to be made whether the test of line anomalies.
If warning system 230 does not provide the first alarm and do not provide the second alarm yet, test device 200 and display surface are represented
100 routes of plate are normal, then test device 200 stops providing operation voltage (being such as changed to provide low-voltage level) to operation pad
T1 to turn off the switch TR0-TR3, and carries out the functional test (such as lighting test) of display panel 100.
If warning system 230 provides the first alarm or the second alarm, represent between test device 200 and display panel 100
Possible line anomalies, then manager can further be detectd mistake.
Fig. 4 is the schematic diagram of the test macro 10 according to depicted in one embodiment of this case.Test macro in the present embodiment
Portion of element in 10 is similar to the element in the test macro 10 in Fig. 2, therefore this will not be repeated here for duplicate part.
In the present embodiment, test circuit 120 includes testing cushion PR, testing cushion PG, testing cushion PB, testing cushion PM, operation
Pad PO1, operation pad PO2, switch TR1, switch TR2, switch OT1 and switch OT2.Wherein, testing cushion PR, testing cushion PG, test
The correlative detail for padding PB, testing cushion PM, switch TR1 and switch TR2 substantially can refer to aforementioned paragraphs, therefore this will not be repeated here.
In the present embodiment, the first end of switch OT1 be electrically connected the control terminal of switch TR1, the control terminal of switch TR2 and
The second end of switch OT2.The second end of switch OT1 is electrically connected the control terminal of operation pad PO2 and switch OT2.The control of switch OT1
End processed is electrically connected the first end of operation pad PO1 and switch OT2.The first end of switch OT2 is electrically connected operation pad PO1 and switch
The control terminal of OT1.The second end of switch OT2 is electrically connected the first end of switch OT1, the control terminal of switch TR1 and switch TR2's
Control terminal.The control terminal of switch OT2 is electrically connected the second end of operation pad PO2 and switch OT1.In the present embodiment, operation pad
PO1 is electrically connected odd column gate lines G L (such as first, third column gate lines G L).In the present embodiment, operation pad PO2 electrically connects
Meet even column gate lines G L (such as secondary series gate lines G L).
In the present embodiment, operation pad PO1 can be electrically connected the control terminal and switch TR2 of switch TR1 by switch OT2
Control terminal.In the present embodiment, operation pad PO2 can be electrically connected the control terminal and switch TR2 of switch TR1 by switch OT1
Control terminal.
In some patterns, the testing cushion P1 in Fig. 1 can be that the testing cushion P2 in testing cushion PR, Fig. 1 in Fig. 4 can be figure
Switch TR in testing cushion PG, Fig. 1 in 4 can be similar to for the function of the switch TR1 in Fig. 4 and the operation pad PO in Fig. 1
Operation pad PO1 in Fig. 4.
In other patterns, the testing cushion P1 in Fig. 1 can be that the testing cushion P2 in testing cushion PB, Fig. 1 in Fig. 4 can be
Switch TR in testing cushion PM, Fig. 1 in Fig. 4 can be similar for the function of the switch TR2 in Fig. 4 and the operation pad PO in Fig. 1
Operation pad PO1 in Fig. 4.
Using above-mentioned setting, test device 200 can be by voltage (the i.e. detection test electricity in detection testing cushion PG, PM
Pressure), and will test test voltage respectively and be compared with the test voltage for being provided to testing cushion PR, PB, with quick judgement test
Between device 200 and display panel 100 whether line anomalies.
Operation voltage (such as high voltage level) is provided to operation pad PO1 and operation pad PO2, with conducting in test device 200
Switch OT1 and OT2, and further in the case where conducting switch TR1, TR2, when the test voltage for being provided to testing cushion PR is (such as high
Voltage quasi position) it is different from when the detection test voltage detected on PG is padded in self-test and/or when the test for being provided to testing cushion PB
When voltage (such as high voltage level) is different from the detection test voltage detected on self-test pad PM, the judgement of test device 200 is surveyed
Line anomalies between 200 and display panel 100 are set in trial assembly.When the test voltage for being provided to testing cushion PR is identical on self-test pad PG
It is identical to detecting on self-test pad PM when the detection test voltage detected and when the test voltage that be provided to testing cushion PB
When detecting test voltage, test device 200 judges that route is normal between test device 200 and display panel 100.
On the other hand, operation voltage (such as high voltage level) is provided to operation pad PO1 and operation pad in test device 200
When at least one of PO2 failure (such as failing because of poor contact or operation electric voltage exception), in switch OT1 and OT2
At least one is closed, and switch TR1-TR2 is caused to close.In this way, be provided to test voltage (such as high voltage standard of testing cushion PR
Position) it will differ from the detection test voltage (such as low voltage level) detected on self-test pad PG and/or be provided to testing cushion PB
Test voltage (such as high voltage level) be different from the detection test voltage (such as low voltage level) that detects on self-test pad PM,
Therefore test device 200 can determine whether line anomalies between test device 200 and display panel 100.
In the present embodiment, circuit for providing voltage 210 may include voltage provide sub-circuit GR, voltage provide sub-circuit GB,
Voltage provides sub-circuit GO1, voltage provides sub-circuit GO2.In the present embodiment, feedback comparison circuit 220 includes comparator 222
And comparator 224.Wherein, voltage provides sub-circuit GR, voltage provides the correlation of sub-circuit GB, comparator 222 and comparator 224
Details substantially can refer to aforementioned paragraphs, therefore this will not be repeated here.
In the present embodiment, voltage provides sub-circuit GO1 to generate and provide operation voltage to operation pad PO1.At this
In embodiment, voltage provides sub-circuit GO2 to generate and provide operation voltage to operation pad PO2.In one embodiment, voltage
Sub-circuit GO1 is provided and voltage provides sub-circuit GO2 and e.g. pads PO1 and operation pad PO2 by row's needle touch operation respectively
It is electrically connected respectively, right this case is not limited.
In the present embodiment, warning system 230 provides alarm (such as sending out a warning) according to comparison signal CMP1, CMP2.One
In embodiment, warning system 230 can provide the test voltage of sub-circuit GR from voltage and detect on testing cushion PG
The test voltage of sub-circuit GB is provided in the case that detection test voltage is different and/or from voltage and is examined on testing cushion PM
In the case that the detection test voltage measured is different, alarm is provided.
Whereby, can quickly judge between test device 200 and display panel 100 whether line anomalies.
Referring to Fig. 4 and Fig. 5, in the present embodiment, (survey is such as lighted in the functional test for carrying out display panel 100
Examination) before (such as period PRD1), voltage provides sub-circuit GO1 and voltage and provides sub-circuit GO2 can provide operation voltage (as having simultaneously
High voltage level VGH) to operation pad PO1 and operation pad PO2, with carry out route whether Yi Chang test.
If warning system 230 provides alarm, possible line anomalies between test device 200 and display panel 100 are represented, then
Manager can further be detectd mistake.
If warning system 230 does not provide alarm, it is normal to represent route between test device 200 and display panel 100, therefore surveys
Trial assembly, which sets 200, can carry out the functional test (such as lighting test) of display panel 100.During functional test (such as lighting test)
(such as period PRD2), voltage provides sub-circuit GO1 and voltage provides sub-circuit GO2 and can provide functional test inverting each other respectively
Voltage is to operation pad PO1 and operation pad PO2.For example, providing the function survey of high voltage level VGH when voltage provides sub-circuit GO1
When trying voltage to operation pad PO1, voltage provides sub-circuit GO2 and provides the functional test voltage of low-voltage level VGL to operation pad
PO2, on the contrary it can analogize.At this point, since one of switch OT1, OT2 receive the functional test voltage of tool low-voltage level VGL
And close, therefore the functional test voltage for having high voltage level VGH can not be provided to the control terminal of switch TR1, TR2, and make to switch
TR1, TR2 are closed.
By above-mentioned setting, can engagement pad (such as Fig. 1, operation pad in operation pad PO and Fig. 3 in 2 be set additionally
T1, T2) in the case where the line anomalies that carry out between test device 200 and display panel 100 test.
Fig. 6 is the flow chart of the test method 300 according to depicted in one embodiment of the invention.
It should be noted that test method 300 can be applied to the test dress of the same or similar structure shown in previous embodiment
It sets.And be to keep narration simple, below will an embodiment according to the present invention, carry out by taking the test device 200 in Fig. 1 as an example to test
Method 300 describes, and so the present invention is not limited with this application.
Further, it should be appreciated that arrive, the operation of mentioned test method 300 in the present embodiment, except especially chatting, bright its is suitable
Outside sequence person, its tandem can be adjusted according to actual needs, or even can simultaneously or partially be performed simultaneously.
Furthermore in different embodiments, these operations also increase to adaptability, replace and/or omit.
In the present embodiment, test method 300 includes following operation.
In operation S1, test device 200 provides the testing cushion P1 of test voltage to display panel 100.In an embodiment
In, testing cushion P1 is electrically connected testing cushion P2 by switch TR.
In operation S2, test device 200 detects the detection test voltage on testing cushion P2.
In operation S3, test device 200 compares test voltage and detection test voltage.
In operation S4, in the case where test voltage and different detection test voltage, test device 200 provides alarm.
It should be noted that the detail of aforesaid operations all can refer to aforementioned paragraphs, therefore this will not be repeated here.
By above-mentioned operation, can quickly judge between test device 200 and display panel 100 whether line anomalies.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding changes and modifications, but these corresponding changes and change in accordance with the present invention
Shape all should fall within the scope of protection of the appended claims of the present invention.
Claims (9)
1. a kind of display panel characterized by comprising
One active region；And
One test circuit, is electrically connected the active region, which includes:
One first main switch；
One first testing cushion is electrically connected a first end of first main switch；
One second testing cushion is electrically connected a second end of first main switch；And
One first operation pad is electrically connected a control terminal of first main switch；
Wherein, which further includes:
One second main switch, a control terminal of second main switch are electrically connected first operation pad；
One third testing cushion is electrically connected a first end of second main switch；And
One the 4th testing cushion is electrically connected a second end of second main switch.
2. display panel according to claim 1, which is characterized in that the test circuit further includes:
One operation main switch, wherein a first end and a control terminal for the operation main switch is electrically connected first operation pad；With
And
One second operation pad, is electrically connected a second end of the operation main switch, and is electrically connected the control of first main switch
The control terminal of end processed and second main switch.
3. display panel according to claim 1, which is characterized in that the test circuit further includes:
One first Operation switch, wherein a first end of first Operation switch is electrically connected the control terminal of first main switch
And the control terminal of second main switch, and a control terminal of first Operation switch is electrically connected first operation pad；
One second operation pad is electrically connected a second end of first Operation switch；And
One second Operation switch, wherein a first end of second Operation switch is electrically connected the control of first Operation switch
End, a second end of second Operation switch are electrically connected the control terminal of first main switch and the control of second main switch
End processed, and a control terminal of second Operation switch is electrically connected second end and second operation of first Operation switch
Pad.
4. a kind of test device characterized by comprising
One circuit for providing voltage, to provide one first testing cushion of a test voltage a to display panel, wherein first survey
Examination pad is electrically connected one second testing cushion by one first main switch；
One feedback comparison circuit, is electrically connected the circuit for providing voltage, to receive the test from the circuit for providing voltage
Voltage detects the detection test voltage in second testing cushion, and compares the test voltage and the detection test voltage；And
One warning system is electrically connected the feedback comparison circuit, to different in the test voltage and the detection test voltage
In the case of, one first alarm is provided；
Wherein, which wherein should more to provide one first operation pad of an operation voltage to the display panel
First operation pad is electrically connected a control terminal of first main switch；
First operation pad is electrically connected one second operation pad by an operation main switch, and the feedback comparison circuit is more to connect
The operation voltage from the circuit for providing voltage is received, detects the detection operation voltage in second operation pad, and compare this
It operates voltage and the detection operates voltage, and wherein provided in the case where the operation voltage and different detection operation voltage
One second alarm, second alarm are different from first alarm.
5. a kind of test device characterized by comprising
One circuit for providing voltage, to provide one first testing cushion of a test voltage a to display panel, wherein first survey
Examination pad is electrically connected one second testing cushion by one first main switch；
One feedback comparison circuit, is electrically connected the circuit for providing voltage, to receive the test from the circuit for providing voltage
Voltage detects the detection test voltage in second testing cushion, and compares the test voltage and the detection test voltage；And
One warning system is electrically connected the feedback comparison circuit, to different in the test voltage and the detection test voltage
In the case of, one first alarm is provided；
Wherein, which wherein should more to provide one first operation pad of an operation voltage to the display panel
First operation pad is electrically connected a control terminal of first main switch；
The circuit for providing voltage more to provide one first operation voltage and one second operation voltage to the display panel respectively
One first operation pad and one second operation pad, wherein first operation pad and second operation pad pass through one first operation respectively and open
Close and one second Operation switch, be electrically connected to a control terminal of first main switch, and wherein this first operation voltage and
When the second operation voltage all has a first voltage level, which is switched on.
6. a kind of test method characterized by comprising
First testing cushion of a test voltage a to display panel as described in claim 1 is provided, wherein first test
Pad is electrically connected second testing cushion by first main switch；
Detect the detection test voltage in second testing cushion；
Compare the test voltage and the detection test voltage；And
In the case where the test voltage and the different detection test voltage, one first alarm is provided.
7. test method according to claim 6, which is characterized in that further include:
There is provided one operation voltage to the display panel one first operation pad, first main switch is connected, wherein this first behaviour
Make the control terminal that pad is electrically connected first main switch.
8. test method according to claim 7, which is characterized in that first operation pad is electrical by an operation main switch
One second operation pad is connected, which further includes:
The detection operation voltage in second operation pad is detected, and compares the operation voltage and detection operation voltage；And
In the case where the operation voltage and different detection operation voltage, one second alarm is provided.
9. test method according to claim 6, which is characterized in that further include:
One first operation voltage and one second operation voltage are provided respectively to one first operation pad of the display panel and one second
Operation pad；
Wherein first operation pad and second operation pad pass through one first Operation switch and one second Operation switch respectively, electrically
It is connected to a control terminal of first main switch, and wherein all has one first in the first operation voltage and the second operation voltage
When voltage quasi position, first main switch conducting.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710399519.5A CN106970296B (en) | 2017-05-31 | 2017-05-31 | Display panel, test device and test method |
| TW107118547A TWI668456B (en) | 2017-05-31 | 2018-05-30 | Display panel, testing device and testing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710399519.5A CN106970296B (en) | 2017-05-31 | 2017-05-31 | Display panel, test device and test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106970296A CN106970296A (en) | 2017-07-21 |
| CN106970296B true CN106970296B (en) | 2019-07-19 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710399519.5A Expired - Fee Related CN106970296B (en) | 2017-05-31 | 2017-05-31 | Display panel, test device and test method |
Country Status (2)
| Country | Link |
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| CN (1) | CN106970296B (en) |
| TW (1) | TWI668456B (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101382557B1 (en) * | 2007-06-28 | 2014-04-08 | 삼성디스플레이 주식회사 | Display apparatus |
| CN101303462A (en) * | 2008-07-04 | 2008-11-12 | 友达光电股份有限公司 | Liquid crystal display panel testing circuit and method |
| CN101299315B (en) * | 2008-07-04 | 2010-10-13 | 友达光电（苏州）有限公司 | Test system for display panel |
| TWI400442B (en) * | 2008-09-01 | 2013-07-01 | Innolux Corp | A detection method for a detection device and a panel |
| CN101441339A (en) * | 2008-12-18 | 2009-05-27 | 友达光电股份有限公司 | LCD module and method for measuring contact electric impedance between circuit boards therein |
| CN101847357A (en) * | 2009-03-23 | 2010-09-29 | 友达光电股份有限公司 | Display panel, display device and test method thereof |
| JP5535707B2 (en) * | 2010-03-19 | 2014-07-02 | 株式会社ジャパンディスプレイ | Display device and display device connection status inspection method |
| TWI480655B (en) * | 2011-04-14 | 2015-04-11 | Au Optronics Corp | Display panel and testing method thereof |
| TWI435093B (en) * | 2012-08-23 | 2014-04-21 | Au Optronics Corp | Detection circuit of display panel |
| CN103559856B (en) * | 2013-10-17 | 2016-03-30 | 友达光电(厦门)有限公司 | The recognition system of the factory source of display panel and display panel and method |
| TWI540323B (en) * | 2014-09-16 | 2016-07-01 | 友達光電股份有限公司 | Test cell structure of display panel and related display panel |
-
2017
- 2017-05-31 CN CN201710399519.5A patent/CN106970296B/en not_active Expired - Fee Related
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2018
- 2018-05-30 TW TW107118547A patent/TWI668456B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| TW201903421A (en) | 2019-01-16 |
| TWI668456B (en) | 2019-08-11 |
| CN106970296A (en) | 2017-07-21 |
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