CN213364199U - Display testing device of display panel - Google Patents
Display testing device of display panel Download PDFInfo
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- CN213364199U CN213364199U CN202022435314.8U CN202022435314U CN213364199U CN 213364199 U CN213364199 U CN 213364199U CN 202022435314 U CN202022435314 U CN 202022435314U CN 213364199 U CN213364199 U CN 213364199U
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Abstract
The utility model discloses a display testing device of a display panel, which comprises a testing device body; the workbench is positioned in the testing device body and used for bearing the display panel to be tested; the testing device comprises at least two height adjusting units and at least two distance sensing units, wherein the height adjusting units are positioned at the bottom of the testing device body; the distance sensing unit comprises a distance information output end, the height adjusting unit comprises a distance information receiving end, the distance information receiving end is electrically connected with the distance information output end, and the height adjusting unit is used for adjusting the testing device body according to the distance information. In the display testing device provided by the utility model, the height adjusting unit adjusts the flatness of the testing device body according to the distance information sensed by the distance sensing unit, so that the alignment and lamination precision between the display panel to be tested and the testing signal providing module is high, and the display testing precision is high; meanwhile, the number of the test signal providing modules is reduced, and the cost is reduced.
Description
Technical Field
The utility model relates to a display panel tests technical field, especially relates to a display panel's display test device.
Background
The display panel is an indispensable component on the display equipment, and the display performance of the display panel can be tested before the display panel leaves the factory, defective products are removed, and the factory yield of the display panel is ensured.
Fig. 1 shows a display testing apparatus of a display panel in the prior art, and as shown in fig. 1, a display testing apparatus 10 includes a testing apparatus body 11, a worktable 12 located inside the testing apparatus body 11, and a height adjusting unit 13 located at the bottom of the testing apparatus body 11. The workbench 12 is used for bearing a display panel to be tested, when the display panel to be tested is subjected to display test, the display panel to be tested and the test signal providing module are aligned and attached to the workbench 12, the test signal is transmitted to the display panel to be tested through the test signal providing module, and display test of the display panel to be tested is achieved.
Because the display testing device 10 vibrates during the working process, the inclination degree of the worktable 12 inside the testing device body 11 changes, even if the display panel to be tested and the testing signal providing module are aligned before contacting, the continuous vibration of the display testing device 10 can cause the alignment deviation of the display panel to be tested and the testing signal providing module after contacting, thereby affecting the alignment precision of the display panel to be tested and the testing signal providing module and the display testing precision; in addition, since the display panel to be tested and the test signal providing module cannot be aligned accurately, the test signal providing module needs to be moved frequently in the display test stage, so that the test signal providing module is damaged more quickly, and the test signal providing module needs to be replaced frequently. Even if the flatness adjustment is performed on the display testing device 10 through the height adjusting unit 13, since the height adjusting unit 13 cannot achieve precise adjustment, the alignment precision of the display panel to be tested and the test signal providing module is still affected, and the problem that the test signal providing module is frequently replaced exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the display testing device of the display panel is provided, the distance sensing unit is additionally arranged in the display testing device, the height adjusting unit automatically adjusts the flatness of the display testing device according to data sensed by the distance sensing unit, accurate adjustment can be achieved, high alignment and attachment precision of the display panel to be tested and the testing signal providing module is guaranteed, and testing precision is improved; meanwhile, the number of the test signal providing modules is reduced, and the cost is reduced.
In order to achieve the purpose, the utility model adopts the following technical proposal:
provided is a display test apparatus of a display panel, including:
a testing device body;
the workbench is positioned in the testing device body and used for bearing a display panel to be tested;
the testing device comprises at least two height adjusting units and at least two distance sensing units, wherein the height adjusting units are positioned at the bottom of the testing device body; the distance sensing unit comprises a distance information output end, the height adjusting unit comprises a distance information receiving end, the distance information receiving end is electrically connected with the distance information output end, and the height adjusting unit is used for adjusting the testing device body according to the distance information.
As a preferable scheme of the display testing device, the distance sensing unit is configured to measure first distance information between the distance sensing unit and the bottom of the testing device body before the display panel to be tested contacts the test signal providing module; the testing device is also used for measuring second distance information between the distance sensing unit and the bottom of the testing device body after the display panel to be tested is contacted with the testing signal providing module;
the height adjusting unit is used for adjusting the testing device body according to the first distance information and the second distance information, so that the second distance information and the first distance information meet preset requirements.
As a preferred scheme of the display testing device, the display panel to be tested comprises a first alignment mark, and the test signal providing module comprises a second alignment mark;
the distance sensing unit is used for measuring first distance information between the distance sensing unit and the bottom of the testing device body before the display panel to be tested is contacted with the testing signal providing module and after the first alignment mark and the second alignment mark are aligned.
As a preferable scheme of the display test device, the distance sensing unit further includes a first display subunit and a second display subunit;
the first display subunit is used for displaying the first distance information;
the second display subunit is configured to display the second distance information.
As a preferable scheme of the display testing device, the display testing device further comprises an alarm unit;
the alarm unit is used for sending an alarm signal when the height adjusting unit adjusts the overtime so as to remind a worker to adjust the testing device body.
As a preferable scheme of the display test device, the bottom of the test device body is quadrilateral;
the at least two distance sensing units comprise a first distance sensing unit and a second distance sensing unit, and the at least two height adjusting units comprise a first height adjusting unit and a second height adjusting unit;
the first distance sensing unit and the first height adjusting unit are correspondingly and electrically connected and are positioned at a first position at the bottom of the testing device body, and the second distance sensing unit and the second height adjusting unit are correspondingly and electrically connected and are positioned at a second position at the bottom of the testing device body; the first position and the second position are both bottom corner positions of the quadrangle, and the first position and the second position are diagonally arranged.
As a preferable scheme of the display test device, the bottom of the test device body is quadrilateral;
the at least two distance sensing units comprise a first distance sensing unit, a second distance sensing unit, a third distance sensing unit and a fourth distance sensing unit, and the at least two height adjusting units comprise a first height adjusting unit, a second height adjusting unit, a third height adjusting unit and a fourth height adjusting unit;
the first distance sensing unit and the first height adjusting unit are electrically connected correspondingly and are all located at a first position of the bottom of the testing device body, the second distance sensing unit and the second height adjusting unit are electrically connected correspondingly and are all located at a second position of the bottom of the testing device body, the third distance sensing unit and the third height adjusting unit are electrically connected correspondingly and are all located at a third position of the bottom of the testing device body, the fourth distance sensing unit and the fourth height adjusting unit are electrically connected correspondingly and are all located at a fourth position of the bottom of the testing device body, and the first position, the second position, the third position and the fourth position are all at a quadrilateral base angle position.
The display object is adjusted so that the second distance information B and the first distance information A satisfy B-A.
As a preferable mode of the display test apparatus, the distance sensing unit includes a laser sensing unit.
The utility model has the advantages that: the distance sensing unit is additionally arranged in the display testing device of the display panel, the distance sensing unit and the height adjusting unit are arranged to be in one-to-one correspondence, the height adjusting unit can adjust the flatness of the display testing device according to data obtained by measurement of the distance sensing unit, the flatness adjusting precision is high, the consistency of the height setting of the display testing device before and after the display panel to be tested is contacted with the test signal providing module is good, the alignment precision of the display panel to be tested and the test signal providing module is good after the display panel to be tested is contacted with the test signal providing module, the test signal provided by the test signal providing module can be accurately transmitted to the display panel to be tested, and the display testing precision is high. Meanwhile, the display panel to be tested and the test signal providing module are good in alignment precision after being contacted, so that the test signal providing module can be prevented from being frequently moved, the test signal providing module is prevented from being damaged, the using number of the test signal providing module is reduced, and the test cost is reduced.
Drawings
FIG. 1 is a schematic diagram illustrating a display testing apparatus provided in the prior art;
FIG. 2 is a schematic diagram of a display panel and a test signal providing module according to the prior art;
fig. 3 is a schematic structural diagram of a display testing apparatus according to an embodiment of the present invention;
FIG. 4 is an enlarged view of region A of FIG. 3;
FIG. 5 is an enlarged schematic view of the area B in FIG. 4;
fig. 6 is a schematic bottom structure diagram of a display testing apparatus according to an embodiment of the present invention;
fig. 7 is a schematic bottom structure diagram of another display testing apparatus according to an embodiment of the present invention;
in fig. 1 and 2:
10. displaying the test device; 11. a testing device body; 12. a work table; 13. a height adjustment unit;
20. a display panel; 201. a test signal receiving terminal; 21. a test signal providing module; 211. a test signal supply terminal;
in fig. 3-7:
30. displaying the test device; 31. a testing device body; 32. a work table; 33. a height adjustment unit; 34. a distance sensing unit; 341. a first display subunit; 342. a second display subunit; 343. a first distance sensing unit; 344. a second distance sensing unit; 345. a third distance sensing unit; 346. a fourth distance sensing unit; 331. a first height adjusting unit; 332. a second height adjusting unit; 333. a third height adjusting unit; 334. a fourth height adjusting unit; p1, first position; p2, second position; p3, third position; p4, fourth position.
Detailed Description
The advantages and features of the present invention and the 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 different forms, and the embodiments are provided only to accomplish the disclosure of the present invention and to enable those skilled in the art to 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.
Before explaining the technical solution of the present invention in detail, how to perform the display test on the display panel is first explained.
Fig. 2 is the utility model provides a await measuring display panel and test signal provide the structural schematic diagram of module, as shown in fig. 2, display panel 20 includes a plurality of test signal receiving terminal 201, test signal provides module 21 and includes a plurality of test signal providing terminal 211, test signal providing terminal 211 and test signal receiving terminal 201 one-to-one, test signal providing terminal 211 will show test signal transmission to test signal receiving terminal 201, test signal receiving terminal 201 and a plurality of sub-pixels in display panel 20 pass through signal transmission line (not shown in the figure) and are connected electrically, so show test signal and pass through signal transmission line transmission to sub-pixel, realize the demonstration test to sub-pixel.
Because the test signal receiving terminals 201 and the test signal providing terminals 211 are arranged compactly, the movable degree of freedom of each test signal providing terminal 211 is less than or equal to 13 μm in the display test stage, and when the movable position of the test signal providing terminal 211 is greater than 13 μm, the test signal providing terminal 211 and the test signal receiving terminal 201 are dislocated, so that normal transmission of display test signals is influenced, and the test precision is influenced.
Moreover, even if the height adjusting unit is arranged in the existing display testing device, the flatness of the display testing device can be adjusted, but the adjustment precision cannot be accurately controlled, so that the adjusted display testing device still has the problems of low alignment precision and frequent replacement of a testing signal providing module.
Based on the above technical problem, an embodiment of the present invention provides a display testing apparatus for a display panel, including a testing apparatus body; the workbench is positioned in the testing device body and used for bearing the display panel to be tested; the testing device comprises at least two height adjusting units and at least two distance sensing units, wherein the height adjusting units are positioned at the bottom of the testing device body; the distance sensing unit comprises a distance information output end, the height adjusting unit comprises a distance information receiving end, the distance information receiving end is electrically connected with the distance information output end, and the height adjusting unit is used for adjusting the testing device body according to the distance information. By adopting the technical scheme, the distance sensing unit is additionally arranged in the display testing device, the distance between the distance sensing unit and the bottom of the testing device body before and after the display panel to be tested is contacted with the testing signal providing module is respectively measured by the distance sensing unit, distance sensing digitization is realized, the height adjusting unit adjusts the testing device body according to distance information, high adjustment precision of the height adjusting unit is ensured, flatness of the worktable before and after the display panel to be tested is contacted with the testing signal providing module is basically the same, the height setting consistency of the display testing device before and after the display panel to be tested is contacted with the testing signal providing module is good, alignment precision of the display panel to be tested and the testing signal providing module is good, and the testing signal provided by the testing signal providing module can be accurately transmitted to the display panel to be tested, and high display test precision is ensured. Meanwhile, the display panel to be tested and the test signal providing module are good in alignment precision after being contacted, so that the test signal providing module can be prevented from being frequently moved, the test signal providing module is prevented from being damaged, the using number of the test signal providing module is reduced, and the test cost is reduced.
Above is the core thought of the utility model, will combine the attached drawing in the embodiment of the utility model below, to the technical scheme in the embodiment of the utility model clearly, describe completely. Based on the embodiments in the present invention, under the premise that creative work is not done by ordinary skilled in the art, all other embodiments obtained all belong to the protection scope of the present invention.
Fig. 3 is a schematic structural diagram of a display testing apparatus for a display panel according to an embodiment of the present invention, and fig. 4 is an enlarged schematic structural diagram of an area a in fig. 3, which is shown in fig. 3 and 4, in combination, a display testing apparatus 30 according to an embodiment of the present invention includes a testing apparatus body 31; a working table 32 located inside the testing device body 31, wherein the working table 32 is used for bearing a display panel to be tested (not shown in the figure); at least two height adjusting units 33 and at least two distance sensing units 34 located at the bottom of the testing device body 31, wherein the distance sensing units 34 correspond to the height adjusting units 33 one by one; the distance sensing unit 34 includes a distance information output terminal (not shown), the height adjusting unit 33 includes a distance information receiving terminal (not shown) electrically connected to the distance information output terminal (not shown), and the height adjusting unit 33 is configured to adjust the testing device body 31 according to the distance information.
Exemplarily, as shown in fig. 3, the embodiment of the present invention provides a display testing device 30 including at least two height adjustment units 33 and at least two distance sensing units 34 located at the bottom of the testing device body 31, and the distance sensing units 34 and the height adjustment units 33 are in one-to-one correspondence, the distance sensing units 34 can measure the distance between the testing device body 31 and the bottom thereof in real time, and feed the distance information back to the height adjustment units 33, where the distance information can be digitized distance information, the height adjustment units 33 can automatically adjust according to the above precise digitized distance information, the adjustment precision is high, so as to ensure that the flatness of the testing device body 31 in the working process is well maintained, so as to ensure that the flatness of the workbench 32 located inside the testing device body 31 is well maintained, the to-be-tested display panel and the test signal providing module located on the workbench 32 can maintain good contact on the stable workbench 32 The alignment precision of the display panel to be tested and the test signal providing module is good after the display panel to be tested and the test signal providing module are contacted, the alignment error of the display panel to be tested and the test signal providing module can be kept in a micron level after the display panel to be tested and the test signal providing module are contacted, the test signal provided by the test signal providing module can be accurately transmitted to the display panel to be tested, and the display test precision is high. Meanwhile, the display panel to be tested and the test signal providing module are good in alignment precision after being contacted, so that the test signal providing module can be prevented from being frequently moved, the test signal providing module is prevented from being damaged, the using number of the test signal providing module is reduced, and the test cost is reduced.
It should be noted that fig. 3 and 4 only illustrate the distance sensing unit 34 and the testing device body 31 being located on the same bearing surface (e.g., the ground surface), and at this time, the distance sensing unit 34 is not in contact with the testing device body 31, and the distance sensing unit 34 senses the distance between the distance sensing unit 34 and the bottom of the testing device body 31. Optionally, the distance sensing unit 34 may also be in contact with the testing device body 31, for example, the distance sensing unit 34 is disposed at the bottom (not shown in the figure) of the testing device body 31 in contact with the bottom, at this time, the distance sensing unit 34 may sense the distance between the distance sensing unit 34 and a carrying surface (for example, the ground), at this time, the distance sensing unit 34 is used to measure first distance information between the distance sensing unit and the carrying surface where the testing device body is located before the display panel to be tested contacts the test signal providing module; and the distance measuring module is also used for measuring second distance information between the distance sensing unit and the bearing surface after the display panel to be tested is contacted with the test signal providing module.
Alternatively, the distance sensing unit 34 may be a laser sensing unit, and the laser sensing unit may determine the distance between the distance sensing unit 34 and the bottom of the testing device body 31 or the distance between the distance sensing unit 34 and a carrying surface (e.g., the ground) based on the flight time of the laser beam, so that the accuracy of the distance sensing result is high. For example, if the emitting time of the laser beam recorded by the laser sensing unit is T1 and the receiving time of the laser beam is T2, the distance between the distance sensing unit 34 and the bottom of the testing device body 31 or the distance S between the distance sensing unit 34 and the carrying surface is (T2-T1) × C/2, where C is the speed of laser light propagating in the air, i.e., the speed of light, so that the distance between the distance sensing unit 34 and the bottom of the testing device body 31 or the distance between the distance sensing unit 34 and the carrying surface can be determined quickly and accurately.
On the basis of the above embodiment, the distance sensing unit 34 is used for measuring first distance information between the distance sensing unit 34 and the bottom of the testing device body 31 before the display panel to be tested contacts the testing signal providing module; the distance sensing unit 34 is used for sensing the distance between the display panel to be tested and the bottom of the testing device body 31; the height adjusting unit 33 is configured to adjust the testing device body 31 according to the first distance information and the second distance information, so that the second distance information and the first distance information meet a preset requirement.
Specifically, the following describes a specific operation of the test apparatus 30.
Since the display panel to be tested and the test signal providing module need to be aligned when contacting, the display panel to be tested may include a first alignment mark, the test signal providing module may include a second alignment mark, and the distance sensing unit 34 may measure the first distance information between the distance sensing unit 34 and the bottom of the testing device body 31 before the display panel to be tested and the test signal providing module contact and after the first alignment mark and the second alignment mark are aligned. The specific working process is as follows:
a. the display panel to be tested is placed on the workbench 32, at this time, the display panel to be tested is not in contact with the test signal providing module, the first alignment mark is aligned with the second mark, and at this time, the distance sensing unit 34 measures first distance information between the distance sensing unit 34 and the bottom of the testing device body 31. Since the first distance information is measured after the alignment of the first alignment mark and the second alignment mark is completed, the first distance information can be used as standard distance information, i.e. as an adjustment reference for the second distance information.
b. The display panel to be tested contacts the test signal providing module, and the distance sensing unit 34 measures second distance information between the distance sensing unit 34 and the bottom of the testing device body 31. The second distance information is different from the first distance information due to the vibration during the operation of the display test device 30.
c. The height adjusting unit 33 automatically adjusts the testing device body 31 according to the first distance information and the second distance information, so that the second distance information and the first distance information satisfy a preset requirement, for example, a ratio between the second distance information and the first distance information satisfies a preset relationship, or a difference between the second distance information and the first distance information satisfies a preset relationship.
For example, the height adjusting unit 33 can be used to adjust the testing device body 31 according to the first distance information and the second distance information, so that the second distance information B and the first distance information A satisfy | B-A ≦ 200 μm; furthermore, the height adjusting unit 33 may be configured to adjust the testing device body 31 according to the first distance information and the second distance information, so that the second distance information B and the first distance information a satisfy B ═ a, thereby ensuring that the second distance information is close to the first distance information, ensuring that the height consistency of the testing device body 31 before the testing device body 31 is not in contact with the testing signal providing module and after the testing device body 31 is in contact with the testing signal providing module is good, and ensuring that the flatness of the testing device body 31 is good.
d. The test information providing module provides a test signal to complete the display test of the display panel to be tested.
After the height adjusting unit 33 completes adjustment, the display test of the display panel to be tested is performed, so that the display panel to be tested is ensured to have good alignment precision after contacting with the test signal providing module, the test signal provided by the test signal providing module can be accurately transmitted to the display panel to be tested, and the display test precision is ensured to be high. Meanwhile, the number of the test signal providing modules is reduced, and the test cost is reduced.
On the basis of the above embodiment, fig. 5 is an enlarged schematic structural diagram of the region B in fig. 4, and as shown in fig. 5, the distance sensing unit 34 further includes a first display subunit 341 and a second display subunit 342; the first display subunit 341 is configured to display the first distance information; the second display subunit 342 is configured to display the second distance information.
Illustratively, as shown in fig. 5, the first display subunit 341 is configured to display the first distance information; the second display subunit 342 is configured to display the second distance information, so that the distance sensing unit 34 can clearly display the first distance information between the distance sensing unit 34 and the bottom of the testing apparatus body 31 before the to-be-tested display panel contacts the testing signal providing module and the second distance information between the distance sensing unit 34 and the bottom of the testing apparatus body 31 after the to-be-tested display panel contacts the testing signal providing module, and clearly display the difference between the first distance information and the second distance information. Meanwhile, the second display subunit 342 can also display second distance information between the distance sensing unit 34 and the bottom of the testing device body 31 in the adjusting process of the height adjusting unit 33 in real time, so that the working personnel can know the height adjusting dynamic state in real time and monitor the working state of the whole display testing device in real time.
Further, as shown in fig. 5, the first distance information may be specific digital information, and the second distance information may be specific digital information, so that the height adjusting unit 33 may implement digital precise adjustment, and ensure high precision of height adjustment.
On the basis of the above embodiment, the display testing device further comprises an alarm unit (not shown in the figure); the alarm unit is used for sending out alarm signals when the height adjusting unit 33 is adjusted to be overtime so as to remind a worker to adjust the testing device body 31.
Exemplarily, the embodiment of the utility model provides a show testing arrangement can also include alarm unit, alarm unit specifically is used for when height adjusting unit 33 adjusts the timeout, and second distance information and first specific information can't adjust to satisfying when predetermineeing the requirement in the settlement time promptly, send alarm information to remind the staff to intervene, adjust second distance information through the staff, adjust to satisfying the requirement of predetermineeing with first specific information adjustment in order to guarantee that two distance information are normally shown the test.
Optionally, the alarm unit may be provided independently, for example, the alarm unit may be an alarm signal lamp or an alarm voice device. Further, the alarm unit may be integrated with the distance sensing unit 34, for example, the alarm unit is a display subunit integrated in the distance sensing unit 34, and the display subunit displays "error" to issue an alarm. It should be noted that, the embodiment of the utility model provides a not injecing the concrete mode that sets up of alarm unit, alarm unit only need adjust the timeout at height adjusting unit 33, send alarm signal, remind the staff to adjust to testing arrangement body 31 can.
In the above embodiment, the distance sensing unit 34 and the height adjusting unit 33 may include a plurality of different arrangements, and two possible arrangements are exemplified below.
As a possible implementation manner, fig. 6 is a schematic bottom structure diagram of a display testing apparatus according to an embodiment of the present invention, and as shown in fig. 6, a bottom shape of a testing apparatus body 31 is a quadrilateral; the at least two distance sensing units include a first distance sensing unit 343 and a second distance sensing unit 344, and the at least two height adjusting units include a first height adjusting unit 331 and a second height adjusting unit 332; the first distance sensing unit 343 and the first height adjusting unit 331 are electrically connected to each other and are located at a first position P1 at the bottom of the testing device body 31, and the second distance sensing unit 344 and the second height adjusting unit 332 are electrically connected to each other and are located at a second position P2 at the bottom of the testing device body 31; the first position P1 and the second position P2 are both bottom corner positions of a quadrilateral and the first position P1 and the second position P2 are diagonally located.
Illustratively, by respectively arranging the first distance sensing unit 343 and the first height adjusting unit 331, and the second distance sensing unit 344 and the second height adjusting unit 332 at diagonal positions of the quadrangle, the flatness of the testing device body 31 can be adjusted by fewer distance sensing units and height adjusting units, thereby ensuring a simple structure and low manufacturing cost of the display testing device.
As a possible implementation manner, fig. 7 is a schematic bottom structure diagram of another display testing apparatus provided in an embodiment of the present invention, and as shown in fig. 7, the bottom shape of the testing apparatus body 31 is a quadrilateral; the at least two distance sensing units include a first distance sensing unit 343, a second distance sensing unit 344, a third distance sensing unit 345, and a fourth distance sensing unit 346, and the at least two height adjusting units include a first height adjusting unit 331, a second height adjusting unit 332, a third height adjusting unit 333, and a fourth height adjusting unit 334; the first distance sensing unit 343 and the first height adjusting unit 331 are electrically connected and located at a first position P1 at the bottom of the testing device body 31, the second distance sensing unit 344 and the second height adjusting unit 332 are electrically connected and located at a second position P2 at the bottom of the testing device body 31, the third distance sensing unit 345 and the third height adjusting unit 333 are electrically connected and located at a third position P3 at the bottom of the testing device body 31, the fourth distance sensing unit 346 and the fourth height adjusting unit 334 are electrically connected and located at a fourth position P4 at the bottom of the testing device body 31, and the first position P1, the second position P2, the third position P3 and the fourth position P4 are all bottom angle positions of a quadrangle.
Exemplarily, a group of distance sensing units and height adjusting units are arranged at four base angle positions of a quadrangle, so that the whole testing device body 31 can be adjusted by adjusting the four base angle positions, and high height adjusting precision is ensured.
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 understand 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 display test apparatus for a display panel, comprising:
a testing device body;
the workbench is positioned in the testing device body and used for bearing a display panel to be tested;
the testing device comprises at least two height adjusting units and at least two distance sensing units, wherein the height adjusting units are positioned at the bottom of the testing device body; the distance sensing unit comprises a distance information output end, the height adjusting unit comprises a distance information receiving end, the distance information receiving end is electrically connected with the distance information output end, and the height adjusting unit is used for adjusting the testing device body according to the distance information.
2. The display testing device of claim 1, wherein the distance sensing unit is configured to measure first distance information between the distance sensing unit and the bottom of the testing device body before the display panel to be tested contacts the test signal providing module; the testing device is also used for measuring second distance information between the distance sensing unit and the bottom of the testing device body after the display panel to be tested is contacted with the testing signal providing module;
the height adjusting unit is used for adjusting the testing device body according to the first distance information and the second distance information, so that the second distance information and the first distance information meet preset requirements.
3. The display test apparatus according to claim 2, wherein the display panel to be tested includes a first alignment mark, and the test signal providing module includes a second alignment mark;
the distance sensing unit is used for measuring first distance information between the distance sensing unit and the bottom of the testing device body before the display panel to be tested is contacted with the testing signal providing module and after the first alignment mark and the second alignment mark are aligned.
4. The display test device of claim 2, wherein the distance sensing unit further comprises a first display subunit and a second display subunit;
the first display subunit is used for displaying the first distance information;
the second display subunit is configured to display the second distance information.
5. The display test device according to claim 1, further comprising an alarm unit;
the alarm unit is used for sending an alarm signal when the height adjusting unit adjusts the overtime so as to remind a worker to adjust the testing device body.
6. The display testing device of claim 1, wherein the bottom of the testing device body is quadrilateral in shape;
the at least two distance sensing units comprise a first distance sensing unit and a second distance sensing unit, and the at least two height adjusting units comprise a first height adjusting unit and a second height adjusting unit;
the first distance sensing unit and the first height adjusting unit are correspondingly and electrically connected and are positioned at a first position at the bottom of the testing device body, and the second distance sensing unit and the second height adjusting unit are correspondingly and electrically connected and are positioned at a second position at the bottom of the testing device body; the first position and the second position are both bottom corner positions of the quadrangle, and the first position and the second position are diagonally arranged.
7. The display testing device of claim 1, wherein the bottom of the testing device body is quadrilateral in shape;
the at least two distance sensing units comprise a first distance sensing unit, a second distance sensing unit, a third distance sensing unit and a fourth distance sensing unit, and the at least two height adjusting units comprise a first height adjusting unit, a second height adjusting unit, a third height adjusting unit and a fourth height adjusting unit;
the first distance sensing unit and the first height adjusting unit are electrically connected correspondingly and are all located at a first position of the bottom of the testing device body, the second distance sensing unit and the second height adjusting unit are electrically connected correspondingly and are all located at a second position of the bottom of the testing device body, the third distance sensing unit and the third height adjusting unit are electrically connected correspondingly and are all located at a third position of the bottom of the testing device body, the fourth distance sensing unit and the fourth height adjusting unit are electrically connected correspondingly and are all located at a fourth position of the bottom of the testing device body, and the first position, the second position, the third position and the fourth position are all at a quadrilateral base angle position.
8. The display test apparatus according to claim 2, wherein the height adjustment unit is configured to adjust the test apparatus body according to the first distance information and the second distance information such that the second distance information B and the first distance information a satisfy | B-a | ≦ 200 μm.
9. The display testing device according to claim 8, wherein the height adjusting unit is configured to adjust the testing device body according to the first distance information and the second distance information, so that the second distance information B and the first distance information a satisfy B-a.
10. The display test device of claim 1, wherein the distance sensing unit comprises a laser sensing unit.
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| CN202022435314.8U CN213364199U (en) | 2020-10-28 | 2020-10-28 | Display testing device of display panel |
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| CN202022435314.8U CN213364199U (en) | 2020-10-28 | 2020-10-28 | Display testing device of display panel |
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| CN202022435314.8U Active CN213364199U (en) | 2020-10-28 | 2020-10-28 | Display testing device of display panel |
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| CN (1) | CN213364199U (en) |
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