CN113554964A - Detection method of display panel - Google Patents
Detection method of display panel Download PDFInfo
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- CN113554964A CN113554964A CN202110871192.3A CN202110871192A CN113554964A CN 113554964 A CN113554964 A CN 113554964A CN 202110871192 A CN202110871192 A CN 202110871192A CN 113554964 A CN113554964 A CN 113554964A
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- 238000001514 detection method Methods 0.000 title claims abstract description 155
- 238000007689 inspection Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims description 29
- 230000010354 integration Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 7
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- 201000001510 Loeys-Dietz syndrome 5 Diseases 0.000 description 3
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- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
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- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
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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
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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
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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
- G01R31/54—Testing for continuity
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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
- G01R31/58—Testing of lines, cables or conductors
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Abstract
The invention discloses a detection method of a display panel. The detection method comprises the following steps: receiving a detection result sent by a detection module; the detection result comprises a plurality of line coordinates and peak values corresponding to the line coordinates; judging whether each peak value is within a preset range; if not, the line coordinate corresponding to the peak value exceeding the preset range is sent to a manual inspection end, so that an inspector can inspect whether the line corresponding to the line coordinate and located in the panel driving part setting area has a fault or not. The technical scheme provided by the invention can enlarge the detection area and improve the bad detection rate of the panel driving part setting area.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a detection method of a display panel.
Background
With the development of display technology, display panels such as liquid crystal display panels and organic light emitting display panels are widely used in display devices such as mobile phones and computers. The detection of the display panel becomes particularly important since the quality of the display panel directly affects the performance of the display device.
Fig. 1 is a schematic diagram illustrating a display panel detected by a detection module according to the related art. Referring to fig. 1, when detecting a defect of a display panel, a detection module (for example, including a first detection unit LDS1 ' and a second detection unit LDS2 ') in a circuit open-circuit inspection machine is usually moved in a direction indicated by an arrow to detect a circuit L1 ' of a display area AA ', and since the circuit L2 ' of a panel driving part setting area BA ' in a non-display area DA ' is complicated, a current detection method cannot detect a failure and position coordinates. Therefore, the open circuit checker can detect only a defect of a horizontal line (not shown in fig. 1) or a vertical line in the display area AA'. Thus, the display panel having a defect may be leaked, resulting in a waste of manpower and financial resources.
Disclosure of Invention
The invention aims to provide a detection method of a display panel, which can enlarge a detection area and improve the detection rate of the defects of a panel driving part setting area.
In order to achieve the purpose, the invention adopts the following technical scheme:
the detection method of the display panel comprises the following steps: receiving a detection result sent by a detection module; the detection result comprises a plurality of line coordinates and peak values corresponding to the line coordinates;
judging whether each peak value is within a preset range or not;
if not, the line coordinate corresponding to the peak value exceeding the preset range is sent to a manual inspection end, so that an inspector can inspect whether a line located in a panel driving part setting area corresponding to the line coordinate is in fault or not.
As a preferable scheme of the detection method of the display panel, the detection module includes a moving frame and at least one detection unit pair, the detection unit pair includes two detection units, and the moving frame includes a guide rail extending along a first direction;
the detection result sent by the receiving detection module comprises:
controlling the detection unit to move along the guide rail;
controlling the movable rack to move along a second direction; wherein the first direction and the second direction intersect;
and receiving the detection result sent by the detection unit.
As a preferable scheme of the detection method of the display panel, the detection module further includes a tilt motor disposed on the moving frame, and one of the pair of detection units is electrically connected to the tilt motor;
before the controlling the pair of detection units to move along the guide rail, the method further includes:
and controlling the tilting motor to drive the detection unit electrically connected with the tilting motor to deflect so that the detection unit electrically connected with the tilting motor deviates a preset angle relative to the second direction.
As a preferable scheme of the detection method for the display panel, the detection unit includes a plurality of sensors, and the peak value is obtained after the signal received by the sensor is filtered and then subjected to second integration.
As a preferable scheme of the detection method of the display panel, the signal received by the sensor is filtered by a second-order band-pass filter.
As a preferable scheme of the detection method of the display panel, a transfer formula of the second-order band-pass filter is as follows:
wherein Q is a quality factor, ωnIs a center frequency, AvpFor the pass band gain, S is the value of each response voltage after a change in the form of a lagrange.
As a preferable embodiment of the detection method of the display panel, the preset range is-1000V to 1000V.
As a preferable aspect of the method for detecting a display panel, the method for detecting a display panel further includes: if the inspection personnel inspect that the line corresponding to the peak value exceeding the preset range and located in the panel driving part setting area fails, the line coordinate corresponding to the line located in the panel driving part setting area and having the failure is sent to a maintenance end.
As a preferable aspect of the method for detecting a display panel, the method for detecting a display panel further includes: and if the line positioned in the panel driving part setting area corresponding to the peak value exceeding the preset range is not checked to be out of order by an inspector, determining that the line positioned in the panel driving part setting area corresponding to the line coordinate has good performance.
As a preferable scheme of the detection method of the display panel, the detection result further includes the line coordinate and a capacitance value corresponding to the line coordinate; the detection method of the display panel further comprises the following steps:
and judging whether the circuit corresponding to the line coordinate and positioned in the display area has an open circuit or not according to the capacitance value.
The invention has the beneficial effects that: the line coordinate and the peak value sent by the detection module are received, whether the peak value is in a preset range or not is judged, if not, the line coordinate corresponding to the peak value exceeding the preset range is sent to the manual inspection end, so that an inspector can inspect whether a line corresponding to the line coordinate and located in a panel driving part setting area fails or not, and the panel driving part setting area is detected. The defect that whether the set area of the panel driving part has faults or not in the prior art can not be detected is overcome, the detection area of the display panel is enlarged, and the bad detection rate of the set area of the panel driving part is improved.
Drawings
Fig. 1 is a schematic diagram illustrating a display panel detected by a detection module according to the related art;
FIG. 2 is a flowchart illustrating a method for inspecting a display panel according to an embodiment of the present invention;
FIG. 3 is a flowchart illustrating another method for inspecting a display panel according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a display panel being detected by a detection module according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a signal before preprocessing according to an embodiment of the present invention;
FIG. 6 is a schematic representation of the signal of FIG. 5 after filtering;
FIG. 7 is a schematic representation of the signal of FIG. 6 after one integration;
FIG. 8 is a schematic representation of the signal of FIG. 7 after a second integration;
FIG. 9 is a flowchart illustrating a method for inspecting a display panel according to another embodiment of the present invention;
in fig. 1:
AA', a display area; DA', a non-display area; BA', panel driving part setting area; LDS 1', a first detection unit; LDS 2', a second detection unit; l1', lines located in the display area; l2', a wiring located in the panel driving part setting area;
in fig. 4:
AA. A display area; DA. A non-display area; BA. A panel driving part setting area; l1, line located in display area; l2, circuit located in the panel drive part setting area; LDS1, a first detection unit; LDS2, a second detection unit; LDS3, third detection unit; LDS4, a fourth detection unit; LDS5, a fifth detection unit; LDS6, a sixth detection unit; YDJ, a movable frame; x, a first direction; y, second direction.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Advantages and features of the present invention and methods of accomplishing the same will become apparent with reference to the following detailed description of the embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, which are provided only to complete the disclosure of the present invention and make those skilled in the art sufficiently understand the scope of the present invention, and the present invention is limited only by the scope of the claims. Like reference numerals denote like constituent elements throughout the specification.
Hereinafter, the present invention is described in detail with reference to the accompanying drawings.
Fig. 2 is a flowchart of a method for detecting a display panel according to an embodiment of the present invention. The method can be applied to the condition of carrying out quality detection on the display panel. Typically, the embodiments of the present application are applicable to a case where quality detection is performed on a panel driving section installation area of a display panel. The method may be particularly performed by a detection device, which may be implemented in software and/or hardware, which may be integrated in an electronic device capable of detecting the method, such as an open circuit inspection machine. Referring to fig. 2, the detection method of the display panel specifically includes the following steps:
and S110, receiving the detection result sent by the detection module.
In particular, the detection module may be a detection module in an open circuit inspection machine. The detection module scans the display panel to be detected to obtain a detection result. The detection result comprises a plurality of line coordinates and peak values corresponding to the line coordinates. Specifically, the panel driving part setting area is provided with a plurality of lines, and the part of the lines are used for connecting the driving chip (located in the panel driving part setting area) and the lines located in the display area. The line corresponding to the line coordinate and located in the panel driving part setting area can be located through the line coordinate, namely, the line coordinate, the line located in the panel driving part setting area and the peak value have a corresponding relation, and when the line located in the panel driving part setting area has a fault, the corresponding peak value is abnormal.
And S120, judging whether each peak value is in a preset range.
Specifically, before the display panel to be detected is detected, a detection experiment is performed on a plurality of display panel samples to determine a preset range. For each display panel sample, firstly, receiving a detection result sent by the detection module, wherein the detection result comprises a line coordinate and a peak value corresponding to the line coordinate; then, checking whether a line corresponding to each line coordinate and positioned in a panel driving part setting area has a fault by an inspector; then, recording whether the lines in the panel driving part setting area have faults or not and the corresponding peak values; then, statistics is performed on the collected whether the lines in the panel driving portion setting area have faults and the corresponding peak values thereof, and it is determined that the line in the panel driving portion setting area has faults in what range of the peak values is a preset proportion (for example, the proportion is 50%, but not limited thereto), and the obtained range is the preset range. Optionally, the preset range is-1000V to 1000V. After the applicant carries out detection experiments on a plurality of display panel samples, the proportion of the lines in the panel driving part setting area with faults is counted to be 50% when the preset range is-1000V to 1000V, therefore, when the preset range is set to be-1000V to 1000V, the proportion of the lines in the panel driving part setting area corresponding to the peak value exceeding the preset range can be enabled to be in the lines in the panel driving part setting area corresponding to the peak value exceeding the preset range, and the proportion of the lines in the panel driving part setting area with faults is theoretically near 50%, so that the bad detection rate of the panel driving part setting area is favorably improved, and the excessive workload of a follow-up inspector for checking whether the lines in the panel driving part setting area have faults or not can be avoided.
And S130, if not, sending the line coordinate corresponding to the peak value exceeding the preset range to a manual inspection end, so that an inspector can inspect whether the line corresponding to the line coordinate and located in the panel driving part setting area has a fault or not.
Specifically, when the peak value does not exceed the preset range, the probability that the line located in the panel driving part setting area corresponding to the peak value fails is low, and an inspector does not need to manually inspect the line located in the panel driving part setting area corresponding to the peak value; when the peak value of the detection signal exceeds the preset range, it indicates that the probability that the line located in the panel driving part setting area corresponding to the peak value has a fault is high, and an inspector needs to manually inspect the line located in the panel driving part setting area corresponding to the peak value. Therefore, the detection rate of the defects in the panel driving part setting area can be improved.
Optionally, the detection method of the display panel further includes: and if the inspection personnel check that the line corresponding to the peak value exceeding the preset range and located in the panel driving part setting area has a fault, sending the line coordinate corresponding to the line located in the panel driving part setting area with the fault to the maintenance end.
It can be understood that the line coordinate corresponding to the line in the panel driving part setting area with the fault is sent to the maintenance end, so that maintenance personnel can quickly locate the line in the panel driving part setting area with the fault and maintain the line in the panel driving part setting area with the fault, so that the display panel can be normally used subsequently, and the final yield of the array substrate preparation project is improved.
Optionally, the detection method of the display panel further includes: if the inspector does not inspect that the circuit corresponding to the peak value exceeding the preset range and located in the panel driving part setting area has a fault, the circuit corresponding to the peak value exceeding the preset range and located in the panel driving part setting area is determined to have good performance.
It is understood that the lines located in the panel driving part installation region, in which no malfunction occurs, are determined to be good in performance, and the display panel can be continuously flowed into the subsequent process so that it can be normally used finally, and thus, the over-inspection can be avoided.
According to the detection method of the display panel provided by the embodiment of the invention, the line coordinate and the corresponding peak value sent by the detection module are received, then whether each peak value is in the preset range is judged, if not, the line coordinate corresponding to the peak value exceeding the preset range is sent to the manual inspection end, so that an inspector can inspect whether a line corresponding to the line coordinate and located in the setting area of the panel driving part fails, and thus the detection of the setting area of the panel driving part is realized. The defect that whether the set area of the panel driving part has faults or not in the prior art can be overcome, the detection area of the display panel is expanded, the bad detection rate and repair rate of the set area of the panel driving part are improved, and the final yield of the array substrate preparation engineering is improved.
Fig. 3 is a flowchart of another display panel detection method according to an embodiment of the present invention. Referring to fig. 3, the detection method of the display panel specifically includes the following steps:
and S210, controlling the detection unit to move along the guide rail.
And S220, controlling the movable frame to move along the second direction.
Wherein the first direction and the second direction intersect. It should be noted that the included angle between the first direction and the second direction can be set by those skilled in the art according to practical situations, and is not limited herein. Optionally, the first direction and the second direction are perpendicular.
Specifically, the detection module includes that the removal puts up and at least one detecting element is right, and detecting element is right to including two detecting element, removes the guide rail that the frame includes to extend along first direction. For example, fig. 4 is a schematic diagram illustrating that a detection module provided in an embodiment of the present invention detects a display panel. In order to distinguish the detection conditions of the display panel by the detection module in the prior art and the application, different reference numerals are adopted for the same structure. Referring to fig. 4, the inspection module includes a movable frame YDJ and six inspection units LDS, wherein the first inspection unit LDS1 and the second inspection unit LDS2 constitute an inspection unit pair, the third inspection unit LDS3 and the fourth inspection unit LDS4 constitute an inspection unit pair, and the fifth inspection unit LDS5 and the sixth inspection unit LDS6 constitute an inspection unit pair. In the process that the detection module scans the display panel to be detected, the six detection units LDS can move along the first direction X, the movable frame ZJ drives the detection units LDS to move along the second direction Y, the composite motion of the six detection units LDS in the detection module can realize the scanning of the lines (including the line L1 located in the display area and the line L2 located in the panel driving part setting area) in the whole display panel, so as to obtain the detection result, and thus, the detection range can be expanded to the panel driving part setting area BA. It should be noted that fig. 4 only exemplarily shows that three pairs of detection unit pairs are included in the detection module, but the detection module is not limited to this, and a person skilled in the art may set the number of the detection unit pairs according to actual situations. It can be understood that, compare and set up a large amount of fixed settings on removing frame YDJ, the detecting element LDS of motion not along first direction X, a large amount of detecting element LDS realize the scanning of detecting module to whole display panel along the closely range of first direction X and fixed setting on removing frame YDJ promptly, in this application, remove along the guide rail through setting up detecting element LDS, and remove frame YDJ and drive detecting element LDS along the motion of second direction Y, realize detecting module to the scanning of whole display panel through detecting element LDS's compound motion promptly, can effectively reduce the quantity of detecting element LDS, be favorable to reducing detecting module's cost.
Optionally, the detection module further includes a tilt motor disposed on the movable frame, and one of the pair of detection units is electrically connected to the tilt motor; before controlling the detection unit pair to move along the guide rail, the method further comprises the following steps: and controlling the tilting motor to drive the detection unit electrically connected with the tilting motor to deflect so that the detection unit electrically connected with the tilting motor deviates a preset angle relative to the second direction.
Specifically, illustrated in fig. 4 is an unbiased case where the two detection cells LDS in the pair of detection cells are not horizontally (in the first direction X) aligned. When the tilting motor drives one detection unit in the detection unit pair to deviate relative to the second direction, the two detection units in the detection unit pair can be aligned in a non-horizontal mode (along the first direction X), and therefore a better detection effect can be achieved. It should be noted that the specific value of the preset angle can be set by those skilled in the art according to practical situations, and is not limited herein.
For example, for the sensing module shown in fig. 4, the first sensing unit LDS1, the third sensing unit LDS3, and the fifth sensing unit LDS5 may be electrically connected to one tilt motor, respectively, such that they may be shifted by a predetermined angle with respect to the second direction, but is not limited thereto, and for example, the second sensing unit LDS2, the fourth sensing unit LDS4, and the sixth sensing unit LDS6 may be electrically connected to one tilt motor, respectively.
And S230, receiving the detection result sent by the detection unit.
Specifically, the specific structure of the detection unit may be set by a person skilled in the art according to practical situations, and is not limited herein as long as the detection unit can upload the line coordinate and the peak value corresponding to the line coordinate. Illustratively, the detection unit includes a plurality of sensors, and one of the pair of detection units may transmit a signal to the other detection unit; alternatively, each of the pair of detection units may transmit a signal to the other and receive a signal transmitted by the other; after passing through the display panel to be detected, the signal changes (called as a fault detection result signal) and carries detection information, and the signal carrying the detection information is preprocessed to obtain a peak value.
Optionally, the detection unit includes a plurality of sensors, and the signal received by the sensor is filtered and then subjected to secondary integration to obtain a peak value. In this way, the peak value of the signal can be easily determined, which will be described by way of example hereinafter.
Specifically, the specific type of filter used in the filtering operation can be set by those skilled in the art according to practical situations, and is not limited herein. Optionally, the signal received by the sensor is filtered by a second-order band-pass filter. It can be understood that the second-order band-pass filter is used for filtering the signal received by the detection unit, so that the filtering effect is better.
Specifically, the transfer formula of an ideal filter is:
the transfer formula of the second-order band-pass filter is as follows:
Illustratively, fig. 5 is a schematic diagram of a signal before preprocessing according to an embodiment of the present invention. Fig. 6 is a schematic representation of the signal of fig. 5 after filtering. Fig. 7 is a schematic diagram of the signal of fig. 6 after one integration. Fig. 8 is a schematic diagram of the signal of fig. 7 after a second integration. The line code in fig. 8 represents line coordinates. As can be seen from fig. 5 and 8, the signal received by the detection unit is converted into a signal form convenient for determining the peak value after being preprocessed.
And S240, judging whether each peak value is in a preset range.
And S250, if not, sending the line coordinate corresponding to the peak value exceeding the preset range to a manual inspection end, so that an inspector can inspect whether the line corresponding to the line coordinate and located in the panel driving part setting area has a fault or not.
On the basis of the above technical solution, optionally, the detection result further includes a line coordinate and a capacitance value corresponding thereto; the detection method of the display panel further comprises the following steps: and judging whether the circuit corresponding to the line coordinate corresponding to the capacitance value is broken or not in the display area.
Specifically, the display area is provided with a plurality of lines, and the lines are partially used for supplying driving signals to the pixels. The line located in the display area corresponding to the line coordinate can be located through the line coordinate, that is, there is a correspondence between the line coordinate and the line located in the display area.
For example, the detection unit may include a plurality of sensors based on the principle of capacitive electric field, and the detection result uploaded by the detection unit further includes a line coordinate and a capacitance value corresponding to the line coordinate. Specifically, one of the detection units in the pair of detection units may send a high frequency signal to the other detection unit, and when the high frequency signal passes through the metal wire and does not pass through the metal wire, the high frequency signal varies differently, so that the capacitance values received by the detection units at the receiving end are different. When the capacitance value does not exceed the preset capacitance threshold value, it can be determined that the line corresponding to the line coordinate and located in the display area is not broken, and when the capacitance value exceeds the preset capacitance threshold value, it can be determined that the line corresponding to the line coordinate and located in the display area is broken.
For example, fig. 9 is a flowchart of a method for detecting a display panel according to another embodiment of the present invention. Referring to fig. 9, the method for detecting the display panel specifically includes the following steps:
and S310, detecting whether the signal sent by the module is the line coordinate and the corresponding peak value. If yes, go to S330. If not, go to S320.
And S320, judging normal examination.
Specifically, S320 may specifically include: the detection result further includes a line coordinate and a capacitance value corresponding thereto, and whether the line located in the display area corresponding to the line coordinate has an open circuit is determined according to the capacitance value.
S330, judging whether each peak value is in a preset range. If yes, go to step S340. If not, go to S350.
And S340, sending the line coordinate corresponding to the peak value exceeding the preset range to a manual inspection end so that an inspector can inspect whether the line corresponding to the line coordinate and located in the panel driving part setting area has a fault.
S350, the circuit located in the panel driving part setting area is judged to have no fault.
Specifically, if the inspector does not inspect that the line located in the panel driving part setting area corresponding to the peak value exceeding the preset range has a fault, it is determined that the line located in the panel driving part setting area corresponding to the peak value exceeding the preset range has good performance.
And S360, judging that the line positioned in the panel driving part setting area has a fault.
Specifically, if the inspector detects that the line located in the panel driving part setting area corresponding to the peak value exceeding the preset range is faulty, the line coordinate corresponding to the line located in the panel driving part setting area where the fault is faulty can be sent to the maintenance end.
Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments, but may be manufactured in various forms, and those skilled in the art will appreciate that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the invention. It is therefore to be understood that the above described embodiments are illustrative and not restrictive in all respects.
Claims (10)
1. A method for detecting a display panel, comprising:
receiving a detection result sent by a detection module; the detection result comprises a plurality of line coordinates and peak values corresponding to the line coordinates;
judging whether each peak value is within a preset range or not;
if not, the line coordinate corresponding to the peak value exceeding the preset range is sent to a manual inspection end, so that an inspector can inspect whether a line located in a panel driving part setting area corresponding to the line coordinate is in fault or not.
2. The method according to claim 1, wherein the inspection module comprises a moving frame and at least one inspection unit pair, the inspection unit pair comprises two inspection units, the moving frame comprises a guide rail extending in a first direction;
the detection result sent by the receiving detection module comprises:
controlling the detection unit to move along the guide rail;
controlling the movable rack to move along a second direction; wherein the first direction and the second direction intersect;
and receiving the detection result sent by the detection unit.
3. The method according to claim 2, wherein the detection module further comprises a tilt motor disposed on the movable frame, and one of the pair of detection units is electrically connected to the tilt motor;
before the controlling the pair of detection units to move along the guide rail, the method further includes:
and controlling the tilting motor to drive the detection unit electrically connected with the tilting motor to deflect so that the detection unit electrically connected with the tilting motor deviates a preset angle relative to the second direction.
4. The method as claimed in claim 2, wherein the detecting unit comprises a plurality of sensors, and the peak value is obtained by filtering the signals received by the sensors and performing a second integration.
5. The method as claimed in claim 4, wherein the signal received by the sensor is filtered by a second-order band-pass filter.
6. The method according to claim 5, wherein the second order band-pass filter has a transfer formula of:
wherein Q is a quality factor, ωnIs a center frequency, AvpFor the pass band gain, S is the value of each response voltage after a change in the form of a lagrange.
7. The method for inspecting a display panel according to claim 1, wherein the predetermined range is-1000V to 1000V.
8. The method for inspecting a display panel according to claim 1, further comprising: if the inspection personnel inspect that the line corresponding to the peak value exceeding the preset range and located in the panel driving part setting area fails, the line coordinate corresponding to the line located in the panel driving part setting area and having the failure is sent to a maintenance end.
9. The method for inspecting a display panel according to claim 1, further comprising: and if the line positioned in the panel driving part setting area corresponding to the peak value exceeding the preset range is not checked to be out of order by an inspector, determining that the line positioned in the panel driving part setting area corresponding to the line coordinate has good performance.
10. The method according to claim 1, wherein the detection result further comprises the line coordinate and a capacitance value corresponding thereto; the detection method of the display panel further comprises the following steps:
and judging whether the circuit corresponding to the line coordinate and positioned in the display area has an open circuit or not according to the capacitance value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871192.3A CN113554964A (en) | 2021-07-30 | 2021-07-30 | Detection method of display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110871192.3A CN113554964A (en) | 2021-07-30 | 2021-07-30 | Detection method of display panel |
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| Publication Number | Publication Date |
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| CN113554964A true CN113554964A (en) | 2021-10-26 |
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| CN210664368U (en) * | 2019-09-23 | 2020-06-02 | 无锡先导智能装备股份有限公司 | Curved surface screen detection device |
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| JP2001255232A (en) * | 2000-03-10 | 2001-09-21 | Micronics Japan Co Ltd | Inspection device for display panel substrate |
| JP2002195988A (en) * | 2000-12-26 | 2002-07-10 | Nippon Steel Corp | Ultrasonic testing device and ultrasonic testing method |
| JP2003076485A (en) * | 2001-08-31 | 2003-03-14 | Pentel Corp | Method of inspecting coordinate input device |
| CN101625826A (en) * | 2008-07-10 | 2010-01-13 | 佳能株式会社 | Display apparatus and driving method thereof |
| CN106053483A (en) * | 2016-06-03 | 2016-10-26 | 深圳市普盛旺科技有限公司 | Intelligent detection equipment for electronic equipment screen glass |
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