CN111312134B - Display panel's check out test set - Google Patents
Display panel's check out test set Download PDFInfo
- Publication number
- CN111312134B CN111312134B CN202010254647.2A CN202010254647A CN111312134B CN 111312134 B CN111312134 B CN 111312134B CN 202010254647 A CN202010254647 A CN 202010254647A CN 111312134 B CN111312134 B CN 111312134B
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- detection
- display panel
- signal input
- electrically connected
- alarm
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- 238000012360 testing method Methods 0.000 title description 5
- 238000001514 detection method Methods 0.000 claims abstract description 186
- 239000000523 sample Substances 0.000 claims abstract description 78
- 238000003780 insertion Methods 0.000 claims abstract description 11
- 230000037431 insertion Effects 0.000 claims abstract description 11
- 239000010409 thin film Substances 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 9
- 238000007689 inspection Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/003—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring position, not involving coordinate determination
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a detection device of a display panel, which comprises: the detection probes are used for inputting detection signals to the signal input end when being electrically connected with the signal input end of the display panel to be detected; the detection circuits are electrically connected with the detection probes and are used for detecting resistance values of any two detection probes electrically connected with the signal input end; and the alarm device is electrically connected with the detection circuit and used for sending out an alarm according to the detection result of the detection circuit. The detection equipment of the display panel provided by the embodiment of the invention is used for avoiding the problem of low detection success rate caused by the occurrence of needle insertion deviation in the detection process of the detection probe.
Description
Technical Field
The invention relates to the technical field of display, in particular to a detection device of a display panel.
Background
The array process is a stage in the manufacturing process of the display panel, in the array process, a thin film transistor array circuit needs to be formed on a glass substrate, and the quality of the display panel is directly determined by the quality of the thin film transistor array circuit, so that the detection of the array circuit is an important link in the manufacturing process.
At present, a detection mode that a probe is contacted with a display panel is adopted to test the display panel, and the working principle of the detection method is that a signal is added to a signal input end in a thin film transistor array circuit through the probe, and then the display panel is detected by a VIOS (Voltage Imaging Optical Subsystem) system. However, with the improvement of the display panel detection automation, the detection of the display panel adopts automatic detection to replace manual detection, and when the detection probe is not deviated to cause the abnormal lighting picture, the abnormal condition cannot be detected in time, thereby influencing the detection process and reducing the success rate of the detection.
Therefore, a new solution is needed to solve the above-mentioned problems.
Disclosure of Invention
The embodiment of the invention provides a detection device of a display panel, which is used for avoiding the problem of low success rate of detection caused by needle insertion deviation in the detection process of a detection probe.
An embodiment of the present invention provides a detection apparatus for a display panel, including:
the detection probes are used for inputting detection signals to the signal input end when being electrically connected with the signal input end of the display panel to be detected;
the detection circuits are electrically connected with the detection probes and are used for detecting resistance values of any two detection probes electrically connected with the signal input end;
and the alarm device is electrically connected with the detection circuit and used for sending out an alarm according to the detection result of the detection circuit.
In the detection device for a display panel provided by the embodiment of the invention, the detection device for a display panel further comprises a waveform output device, wherein the waveform output device is electrically connected with the detection circuit and is used for outputting a waveform chart of an electric signal formed by the detection circuit.
In the detection device for a display panel provided by the embodiment of the invention, the alarm device is used for receiving the resistance value between any two detection probes detected by the detection circuit, comparing the received resistance value with a preset resistance value, and sending an alarm when the resistance value is smaller than the preset resistance value.
In the detection device for a display panel provided by the embodiment of the present invention, the detection device for a display panel further includes:
the detection platform is used for placing the display panel to be detected;
and the fixing member is arranged on the detection table and is used for fixing the detection probe.
In the detection device for a display panel provided by the embodiment of the invention, the detection device for a display panel further comprises a moving member, wherein the moving member is arranged on the detection table and is connected with the fixed member for moving the fixed member.
In the detection device for the display panel provided by the embodiment of the invention, the moving member comprises a sliding block and a sliding groove, the sliding block is arranged in the sliding groove, and the fixing member is arranged on the sliding block.
In the detection device for the display panel provided by the embodiment of the invention, the moving member horizontally moves along the first direction on the test bench.
In the detection device for a display panel provided by the embodiment of the invention, the detection probe comprises a first end connected with the signal input connection end and a second end connected with the detection circuit, and the first end is exposed on the detection table.
In the detection device of the display panel provided by the embodiment of the invention, the alarm device comprises an acoustic alarm or an optical alarm.
In the detection device for the display panel provided by the embodiment of the invention, the number of the detection probes is greater than or equal to the number of the signal input ends contacted with the detection probes.
Compared with the prior art, in the detection device of the display panel provided by the embodiment of the invention, the detection circuit is connected to the detection probe, whether the needle insertion position of the detection probe is deviated or not is judged through the detected resistance value of the detection probe, and the alarm device is arranged on the detection circuit, so that real-time detection can be realized, and the problem of low detection success rate caused by needle insertion deviation in the detection process of the detection probe is avoided.
In addition, the detection apparatus for a display panel in the embodiment of the invention further includes a moving member horizontally moving along the first direction for improving the detection efficiency of the display panel.
In order to make the above-mentioned objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic diagram of a detection device for a display panel according to an embodiment of the present invention;
fig. 2 is another schematic diagram of a detection apparatus for a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a detection device for a display panel according to an embodiment of the present invention.
Detailed Description
For a better understanding of the present invention, its objects, technical solutions and advantages, reference should be made to the following detailed description of the invention with reference to the drawings wherein like reference numerals refer to like elements throughout the several views, and the following description is based on the illustrated embodiments of the invention, which should not be construed as limiting other embodiments of the invention not described herein. The word "embodiment" is used in this specification to mean an example, instance, or illustration.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
Referring to fig. 1, an embodiment of the present invention provides a detection apparatus for a display panel, including: the display panel comprises a plurality of groups of detection probes R, a plurality of detection circuits 11 and an alarm device 12, wherein the detection probes R are used for inputting detection signals to a signal input end 211 of a display panel 2 to be detected when the detection probes R are electrically connected with the signal input end 211; the detection circuit 11 is electrically connected to the detection probes R, and is configured to detect resistance values of any two detection probes 11 electrically connected to the signal input end 211; the alarm device 12 is electrically connected to the detection circuit 11, and is configured to send an alarm according to a detection result of the detection circuit 11.
The detection probes R include a first detection probe R1, a second detection probe R2, a third detection probe R3, a fourth detection probe R4, and an nth detection probe Rn electrically connected to the signal input end 211 of the display panel 2. The detection circuit 11 is formed by electrically connecting an external connection wire 14 with two adjacent detection probes and electrically connecting an array circuit of a thin film transistor, for example, the first detection probe R1 and the second detection probe R2 are connected by the wire 14 to form the detection circuit 11; the third detection probe R3 and the fourth detection probe R4 are connected through a wire 14 to form a detection circuit 11; by analogy, the Nth detection probe Rn-1 and the Nth detection probe Rn are connected through a wire 14 to form a detection circuit 11. The drawings of the present invention are only schematic, and the detection circuit 11 further includes other combinations of detection probes, for example, the first detection probe R1 and the fourth detection probe R4 are connected by a wire 14 to form the detection circuit 11; the second detection probe R2 and the third detection probe R3 are connected by a wire 14 to form a detection circuit 11. It should be understood that the complete detection circuit 11 further includes a power source and other components, which are well known in the art and will not be described in detail herein.
Alternatively, each of the detection circuits 11 in the embodiment of the present invention may also exist in parallel, that is, at least two of the detection circuits 11 are connected in series and then connected by the wire 14 to form a parallel circuit.
Further, referring to fig. 1, the detecting apparatus of the display panel further includes a waveform output device 13, where the waveform output device 13 is electrically connected to the detecting circuit 11, and is configured to output a waveform chart of the electrical signal formed by the detecting circuit 11. The waveform output device comprises waveform output equipment, a display screen and the like which are electrically connected with the waveform output equipment. For example, the waveform output device comprises an electrochemical workstation, and the display screen comprises a computer display screen and a display.
The alarm device 12 is configured to receive a resistance value between any two of the detection probes of the detection circuit 11, compare the received resistance value with a preset resistance value, and send out an alarm when the resistance value is smaller than the preset resistance value. Wherein the alarm device 12 comprises an acoustic alarm or an optical alarm.
In the embodiment of the present invention, the alarm device 12 includes an audible alarm that sounds an abnormality when, for example, the needle insertion position of the detection probe R is shifted. When the needle insertion position of the detection probe R is normal, the sound alarm sounds to prompt normal.
The alarm device 12 in the embodiment of the present invention further includes an optical alarm that displays a red light when the needle insertion position of the detection probe R is shifted. When the needle insertion position of the detection probe R is normal, the light alarm displays a green light. It should be understood that the prompt forms of the acoustic alarm and the optical alarm in the embodiments of the present invention may be set according to actual requirements.
Wherein the number of detection probes R is greater than or equal to the number of said signal inputs in contact therewith. Preferably, the number of the detection probes R is greater than the number of the signal input ends contacted with the detection probes R, and the number of the detection probes R is greater than the number of the signal input ends contacted with the detection probes R, so that the detection signals can still be loaded on each display panel when the number of the signal input ends of the display panel is increased, or a certain group of detection probes is replaced when the certain group of detection probes cannot work, and the loading process of the detection signals is finished on each panel at one time; and if the number of the detection probes on the fixing member is far greater than the number of the signal input ends of the display panels to be detected, the loading process of the detection signals can be finished for two or more display panels to be detected at the same time, so that the detection efficiency is improved.
Optionally, referring to fig. 2, taking a detection circuit 11 as an example, in the detection apparatus for a display panel provided in the embodiment of the present invention, the alarm device 12 may be further connected in series with the detection probe R and in the detection circuit 11.
Referring to fig. 3, in the display panel inspection apparatus according to the embodiment of the present invention, the display panel inspection apparatus further includes an inspection table 15 and a fixing member 16, the inspection table 15 is used for placing the display panel 2 to be inspected, and the fixing member 16 is disposed on the inspection table 15 and is used for fixing the inspection probe R.
Further, the display panel detecting apparatus further includes a moving member 17, the moving member 17 being disposed on the detecting table 15 and connected to the fixing member 16 for moving the fixing member 16. The moving member 17 includes a sliding block 171 and a sliding groove 172, the sliding block 171 is disposed in the sliding groove 172, and the fixing member 16 is disposed on the sliding block 171. Wherein the moving member 17 moves in a first direction D1 on the test bench 15. Alternatively, the fixing member 16 may be movable on the slider 171 in the second direction D2. In the inspection apparatus for a display panel of the embodiment of the present invention, the moving member 17 is provided on the inspection stage 15 such that the inspection probe R moves in the first direction D1 and the fixing member 16 moves in the second direction D2 on the slider 171, and the inspection efficiency is improved by fine-adjusting the positional relationship between the display panel 2 to be inspected and the inspection probe R. It should be understood that the first direction D1 in the present invention refers to a direction parallel to the detection stage 15, and the second direction D2 refers to a direction parallel to the detection stage 15 and perpendicular to the first direction D1.
When the detection is started, after the detection probe R moves to a proper position along the first direction D1, the detection probe R contacts with the signal input end 211 of the display panel, so that the detection signal is loaded into the array circuit of the thin film transistor. It should be understood that the appropriate position in the embodiments of the present invention refers to moving to a position set in the program.
Referring to fig. 1 and 3, in the display panel inspection apparatus according to the embodiment of the present invention, the inspection probe R includes a first end connected to the signal input connection end 211 and a second end connected to the inspection circuit 11, and the first end is exposed on the inspection table 15.
It should be understood that the electrical connection of the detection probe R with the signal input end 211 of the display panel 2 to be tested in the embodiment of the present invention means that the detection probe R is electrically connected with the signal input end 211 of the array substrate 21 in the display panel 2 to be tested.
The detection device for the display panel provided by the embodiment of the invention is suitable for the display panel provided with the array substrate, such as a liquid crystal display panel (TFT-LCD) driven by a thin film transistor, an organic light emitting diode (Organic Light Emitting Diode) and the like.
Compared with the prior art, in the detection device of the display panel provided by the embodiment of the invention, the detection circuit is connected to the detection probe, whether the needle insertion position of the detection probe is deviated or not is judged through the detected resistance value of the detection probe, and the alarm device is arranged on the detection circuit, so that real-time detection can be realized, and the problem of low detection success rate caused by needle insertion deviation in the detection process of the detection probe is avoided.
In addition, the detection apparatus for a display panel in the embodiment of the invention further includes a moving member horizontally moving along the first direction for improving the detection efficiency of the display panel.
In summary, although the present invention has been described in terms of the preferred embodiments, the preferred embodiments are not limited to the above embodiments, and various modifications and changes can be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention is defined by the appended claims.
Claims (4)
1. A display panel detection apparatus, characterized by comprising:
the detection probes are used for inputting detection signals to the signal input ends when being electrically connected with the signal input ends of the display panel to be detected, and the detection probes are electrically connected with the signal input ends of the thin film transistor array circuit of the display panel to be detected in a one-to-one correspondence manner;
the detection circuits are electrically connected with the detection probes and are used for detecting resistance values of any two detection probes electrically connected with the signal input end;
the alarm device is electrically connected with the detection circuit and used for giving an alarm according to the detection result of the detection circuit;
the alarm device is used for receiving the resistance value between any two detection probes detected by the detection circuit, comparing the received resistance value with a preset resistance value, detecting whether the needle insertion position of the detection probes deviates in real time, and sending an alarm when the resistance value is smaller than the preset resistance value;
the display panel detection apparatus further includes:
the detection platform is used for placing the display panel to be detected;
a fixing member provided on the detection stage for fixing the detection probe;
the moving member is arranged on the detection table and connected with the fixing member, the moving member comprises a sliding block and a sliding groove, the sliding block is arranged in the sliding groove, the fixing member is arranged on the sliding block and moves on the detection table along a first direction, the fixing member moves on the sliding block along a second direction, the first direction is parallel to the detection table, the second direction is parallel to the detection table and perpendicular to the first direction, and the detection probe comprises a first end connected with the signal input end and a second end connected with the detection circuit, and the first end is exposed on the detection table.
2. The apparatus according to claim 1, further comprising a waveform output device electrically connected to the detection circuit for outputting a waveform of the electric signal formed by the detection circuit.
3. A display panel detection apparatus according to any one of claims 1 to 2, wherein the alarm means comprises an acoustic alarm or an optical alarm.
4. The apparatus according to any one of claims 1 to 2, wherein the number of the detection probes is greater than or equal to the number of the signal input terminals with which it is in contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010254647.2A CN111312134B (en) | 2020-04-02 | 2020-04-02 | Display panel's check out test set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010254647.2A CN111312134B (en) | 2020-04-02 | 2020-04-02 | Display panel's check out test set |
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| Publication Number | Publication Date |
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| CN111312134A CN111312134A (en) | 2020-06-19 |
| CN111312134B true CN111312134B (en) | 2024-03-08 |
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| CN202010254647.2A Active CN111312134B (en) | 2020-04-02 | 2020-04-02 | Display panel's check out test set |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112201186A (en) * | 2020-10-10 | 2021-01-08 | 深圳市华星光电半导体显示技术有限公司 | Test component group |
| CN117665544B (en) * | 2024-02-01 | 2024-06-11 | 合肥晶合集成电路股份有限公司 | Wafer acceptance test method |
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| CN111312134A (en) | 2020-06-19 |
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