CN220019735U - Accurate resistance testing device for display panel - Google Patents
Accurate resistance testing device for display panel Download PDFInfo
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- CN220019735U CN220019735U CN202320795291.2U CN202320795291U CN220019735U CN 220019735 U CN220019735 U CN 220019735U CN 202320795291 U CN202320795291 U CN 202320795291U CN 220019735 U CN220019735 U CN 220019735U
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Abstract
The utility model discloses an accurate resistance testing device for a display panel, which comprises a first testing pad, a second testing pad, a third testing pad, a fourth testing pad, a fifth testing pad and a sixth testing pad, wherein a first resistor is arranged between the first testing pad and the second testing pad, a second resistor and a third resistor are arranged between the second testing pad and the fourth testing pad, a fourth resistor is arranged between the third testing pad and the fourth testing pad, a fifth resistor and a sixth resistor are arranged between the fourth testing pad and the sixth testing pad, a seventh resistor is arranged between the fifth testing pad and the sixth testing pad, a first via hole is arranged between the second resistor and the third resistor, and a second via hole is arranged between the fifth resistor and the sixth resistor. Only 3 groups of resistance values are measured simultaneously, the resistance of the first VIA hole VIA1 can be accurately obtained, and interference of factors such as wiring resistance, testing fluctuation of an instrument, testing environment and the like can be eliminated, so that an accurate resistance value is obtained.
Description
Technical Field
The present utility model relates to a resistance testing device, and more particularly, to an accurate resistance testing device for a display panel.
Background
In recent years, as display panels are developed toward large-size, high-resolution and high-refresh frequency, the requirements on the signal line loads of the display panels are also becoming more and more stringent. In the production process, a TEG test area is usually arranged at the periphery of a display area, and the production process and flow can be effectively controlled by controlling parameters such as resistance, capacitance, I-V characteristics and the like. Accurate resistance and capacitance test can avoid unqualified products to continuously flow into the next working procedure, and resource waste is caused. Currently, the internal resistance test in the display industry mostly adopts a two-wire resistance test or a four-wire Kelvin resistance test, wherein the two-wire resistance test method has lower precision, the four-wire Kelvin resistance test method has more complicated process, the requirement on equipment precision is high, and the test cost is high.
Chinese patent document CN104849880B discloses a display panel TEG testing assembly comprising: a plurality of test pads sequentially arranged on the display panel; and a plurality of metal leads arranged to be electrically isolated from each other and in one-to-one correspondence with the plurality of test pads such that one metal lead is drawn from each test pad, wherein a first metal lead drawn from a first test pad is connected with a third metal lead drawn from a third test pad to form a first test bond, a second metal lead drawn from a second test pad is connected with a fifth metal lead drawn from a fifth test pad to form a second test bond, and a fourth metal lead drawn from a fourth test pad is connected with a sixth metal lead drawn from a sixth test pad to form a third test bond, and the first test bond crosses the second test bond, and the second test bond crosses the third test bond.
It is apparent that this patent is directed only to the configuration and structural optimization of the TEG test assembly and does not address the current problems.
Disclosure of Invention
Based on the above, it is necessary to provide an accurate resistance testing device for a display panel, which includes a first test pad, a second test pad, a third test pad, a fourth test pad, a fifth test pad and a sixth test pad, wherein a first resistor is disposed between the first test pad and the second test pad, a second resistor and a third resistor are disposed between the second test pad and the fourth test pad, a fourth resistor is disposed between the third test pad and the fourth test pad, a fifth resistor and a sixth resistor are disposed between the fourth test pad and the sixth test pad, a seventh resistor is disposed between the fifth test pad and the sixth test pad, a first via is disposed between the second resistor and the third resistor, a second via is disposed between the fifth resistor and the sixth resistor, wherein the resistance value of the first resistor is the same as that of the second resistor, the resistance value of the third resistor is the same as that of the fourth resistor, the resistance value of the fourth resistor is the same as that of the sixth resistor, and the resistance value of the fifth resistor is the same as that of the sixth resistor. Only 3 groups of resistance values are measured simultaneously, the resistance of the first VIA hole VIA1 can be accurately obtained, interference of factors such as wiring resistance, testing fluctuation of an instrument, testing environment and the like can be eliminated, so that an accurate resistance value is obtained, and meanwhile, the testing flow of the resistance is simplified.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the accurate resistance testing device for the display panel is characterized by comprising a first testing pad, a second testing pad, a third testing pad, a fourth testing pad, a fifth testing pad and a sixth testing pad, wherein a first resistor is arranged between the first testing pad and the second testing pad, a second resistor and a third resistor are arranged between the second testing pad and the fourth testing pad, a fourth resistor is arranged between the third testing pad and the fourth testing pad, a fifth resistor and a sixth resistor are arranged between the fourth testing pad and the sixth testing pad, a seventh resistor is arranged between the fifth testing pad and the sixth testing pad, a first through hole is arranged between the second resistor and the third resistor, a second through hole is arranged between the fifth resistor and the sixth resistor, the resistance value of the first resistor is the same as that of the second resistor, the resistance value of the third resistor is the same as that of the fourth resistor is the seventh resistor, and the resistance value of the sixth resistor is the same as that of the fourth resistor is the seventh resistor.
As a preferred embodiment of the accurate resistance testing device for a display panel provided by the utility model, the third resistor is arranged in series with the second resistor, and the fifth resistor is arranged in series with the sixth resistor.
In an embodiment of the accurate resistance testing device for a display panel of the present utility model, the first resistor and the second resistor are made of a first metal wire, the third resistor, the fourth resistor and the fifth resistor are made of a second metal wire, and the sixth resistor and the seventh resistor are made of a third metal wire.
As a preferred embodiment of the accurate resistance test apparatus for a display panel provided by the present utility model, the first, second, third, fourth, fifth and sixth test pads have dimensions of 4mm×4mm.
As a preferred embodiment of the accurate resistance test device for a display panel provided by the utility model, the first test pad, the second test pad, the third test pad, the fourth test pad, the fifth test pad and the sixth test pad are provided with an anti-slip abrasive layer on the surfaces.
The accurate resistance testing device for the display panel is characterized by comprising a first testing pad, a second testing pad, a third testing pad, a fourth testing pad, a fifth testing pad and a sixth testing pad, wherein a first resistor is arranged between the first testing pad and the second testing pad, a second resistor and a third resistor are arranged between the second testing pad and the fourth testing pad, a fourth resistor is arranged between the third testing pad and the fourth testing pad, a fifth resistor and a sixth resistor are arranged between the third testing pad and the fifth testing pad, a seventh resistor is arranged between the fifth testing pad and the sixth testing pad, a first through hole is arranged between the second resistor and the third resistor, a second through hole is arranged between the fifth resistor and the sixth resistor, the resistance value of the first resistor is the same as that of the second resistor, the resistance value of the third resistor is the same as that of the fourth resistor is the fifth resistor, and the resistance value of the sixth resistor is the same as that of the fourth resistor is the seventh resistor.
As a preferred embodiment of the accurate resistance testing device for a display panel provided by the utility model, the third resistor is arranged in series with the second resistor, and the fifth resistor is arranged in series with the sixth resistor.
In an embodiment of the accurate resistance testing device for a display panel of the present utility model, the first resistor and the second resistor are made of a first metal wire, the third resistor, the fourth resistor and the fifth resistor are made of a second metal wire, and the sixth resistor and the seventh resistor are made of a third metal wire.
As a preferred embodiment of the accurate resistance test apparatus for a display panel provided by the present utility model, the first, second, third, fourth, fifth and sixth test pads have dimensions of 4mm×4mm.
As a preferred embodiment of the accurate resistance test device for a display panel provided by the utility model, the first test pad, the second test pad, the third test pad, the fourth test pad, the fifth test pad and the sixth test pad are provided with an anti-slip abrasive layer on the surfaces.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides a precise resistance testing device for a display panel, which can precisely obtain the resistance of a first via hole by only measuring the group resistance value at the same time, and can eliminate the interference of factors such as wiring resistance, instrument testing fluctuation, testing environment and the like, thereby obtaining precise resistance value and simplifying the testing flow of the resistance.
In addition, a display lamp may be disposed on one side of the first test pad, the second test pad, the third test pad, the fourth test pad, the fifth test pad, and the sixth test pad. When testing, once the test pad is connected to the circuit, the display lamp beside the test pad is turned on, so that a user can quickly know the current circuit connection condition, and the test pad is clear and reliable, thereby being beneficial to improving the test efficiency.
In addition, a first limit bayonet can be arranged on one side of the bottom plate, and a second limit bayonet is arranged on the other side of the bottom plate. When installing, can utilize first spacing bayonet socket and the spacing bayonet socket of second to fix the casing of display panel with the bottom plate in accurately, be difficult for taking place to rock, be favorable to improving testing arrangement's reliability.
Drawings
In order to more clearly illustrate the solution of the present utility model, a brief description will be given below of the drawings required for the description of the embodiments, it being obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a connection structure of a precision resistance testing apparatus for a display panel according to the present utility model;
FIG. 2 is a schematic perspective view of the precision resistance testing device for display panel of FIG. 1;
FIG. 3 is a schematic diagram showing a connection structure of a precision resistance testing apparatus for a display panel according to another embodiment of the present utility model;
FIG. 4 is a schematic perspective view of another embodiment of the precision resistance testing apparatus for display panel of FIG. 2;
FIG. 5 is an enlarged detail view of region G of the schematic diagram of the precise resistance test apparatus for display panel of FIG. 2 in FIG. 4;
FIG. 6 is a schematic diagram of a perspective structure of a further embodiment of the precision resistance testing apparatus for display panel of FIG. 2;
FIG. 7 is an enlarged detail view of region H of the schematic diagram of the precise resistance test device for display panel of FIG. 6;
FIG. 8 is an enlarged detail schematic view of area I of the schematic view of the precise resistance testing device for display panel of FIG. 6;
the labels in the figures are illustrated below: A. a first test pad; B. a second test pad; C. a third test pad; D. a fourth test pad; E. a fifth test pad; F. a sixth test pad; m1, a first metal wire; m2, a second metal wire; m3, a third metal wire; r1, a first resistor; r2, a second resistor; r3, a third resistor; r4, a fourth resistor; r5, a fifth resistor; r6, a sixth resistor; r7, a seventh resistor; VIA1, first VIA; VIA2, second VIA.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
As described in the background art, in recent years, as display panels are developed toward large-size, high-resolution and high-refresh frequency, the requirements on the signal line loads of the display panels are also becoming more and more stringent. In the production process, a TEG test area is usually arranged at the periphery of a display area, and the production process and flow can be effectively controlled by controlling parameters such as resistance, capacitance, I-V characteristics and the like. Accurate resistance and capacitance test can avoid unqualified products to continuously flow into the next working procedure, and resource waste is caused. Currently, the internal resistance test in the display industry mostly adopts a two-wire resistance test or a four-wire Kelvin resistance test, wherein the two-wire resistance test method has lower precision, the four-wire Kelvin resistance test method has more complicated process, the requirement on equipment precision is high, and the test cost is high.
In order to solve the technical problem, the present utility model provides an accurate resistance testing device for a display panel, which comprises a first test pad A, a second test pad B, a third test pad C, a fourth test pad D, a fifth test pad E and a sixth test pad F. A first resistor R1 is arranged between the first test pad A and the second test pad B, and a second resistor R2 and a third resistor R3 are arranged between the second test pad B and the fourth test pad D. A fourth resistor R4 is disposed between the third test pad C and the fourth test pad D, a fifth resistor R5 and a sixth resistor R6 are disposed between the fourth test pad D and the sixth test pad F, and a seventh resistor R7 is disposed between the fifth test pad E and the sixth test pad F. A first VIA hole VIA1 is disposed between the second resistor R2 and the third resistor R3, and a second VIA hole VIA2 is disposed between the fifth resistor R5 and the sixth resistor R6. The first resistor R1 and the second resistor R2 have the same resistance, the third resistor R3 and the fourth resistor R4 have the same resistance, the fourth resistor R4 and the fifth resistor R5 have the same resistance, and the sixth resistor R6 and the seventh resistor R7 have the same resistance.
Through the structural design, only 3 groups of resistance values are measured at the same time, the resistance of the first VIA hole VIA1 can be accurately obtained, interference of factors such as wiring resistance, instrument testing fluctuation, testing environment and the like can be eliminated, and therefore the accurate resistance value is obtained, and meanwhile, the testing flow of the resistance is simplified.
In order to better understand the solution of the present utility model, the following detailed description will describe the solution of the embodiment of the present utility model with reference to the accompanying drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, and thus the protection scope of the present utility model is more clearly and definitely defined.
It should be noted that, under the condition of no conflict, the embodiments of the present utility model and the features and technical solutions in the embodiments may be combined with each other.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Example 1
As shown in fig. 1 and 2, the accurate resistance test apparatus for a display panel includes a first test pad a, a second test pad B, a third test pad C, a fourth test pad D, a fifth test pad E and a sixth test pad F.
The accurate resistance testing device for the display panel comprises a bottom plate 1, wherein a first testing pad A, a second testing pad B, a third testing pad C, a fourth testing pad D, a fifth testing pad E and a sixth testing pad F are all arranged on the bottom plate 1.
A first resistor R1 is arranged between the first test pad A and the second test pad B, and a second resistor R2 and a third resistor R3 are arranged between the second test pad B and the fourth test pad D. A fourth resistor R4 is disposed between the third test pad C and the fourth test pad D, a fifth resistor R5 and a sixth resistor R6 are disposed between the fourth test pad D and the sixth test pad F, and a seventh resistor R7 is disposed between the fifth test pad E and the sixth test pad F.
A first VIA hole VIA1 is disposed between the second resistor R2 and the third resistor R3, and a second VIA hole VIA2 is disposed between the fifth resistor R5 and the sixth resistor R6.
The first resistor R1 and the second resistor R2 have the same resistance, the third resistor R3 and the fourth resistor R4 have the same resistance, the fourth resistor R4 and the fifth resistor R5 have the same resistance, and the sixth resistor R6 and the seventh resistor R7 have the same resistance.
The third resistor R3 is connected in series with the second resistor R2, and the fifth resistor R5 is connected in series with the sixth resistor R6.
In addition, the first resistor R1 and the second resistor R2 are made of a first metal wire M1, the third resistor R3, the fourth resistor R4 and the fifth resistor R5 are made of a second metal wire M2, and the sixth resistor R6 and the seventh resistor R7 are made of a third metal wire M3.
In addition, the first, second, third, fourth, fifth and sixth test pads a, B, C, D, E and F have dimensions of 4mm×4mm.
In addition, the first test pad A, the second test pad B, the third test pad C, the fourth test pad D, the fifth test pad E and the sixth test pad F are provided with anti-skid sand layers on the surfaces, and are used for anti-skid of the test pads, so that the test is convenient.
The operation of this embodiment will be described below.
By adjusting the line length and the line width of the first metal line M1, the second metal line M2, and the third metal line M3, r1=r2, r3=r4, r4=r5, r6=r7. In the test, only R is measured at the same time AB 、R BD And R is CD The resistance of the Via Via1 can be obtained as follows:
R Via1 ＝R BD -R AB -R CD
obviously, the accurate resistance testing device only needs to measure 3 groups of resistance values at the same time, so that the resistance of the first VIA hole VIA1 can be accurately obtained, interference of factors such as wiring resistance (namely the second resistor R2 and the third resistor R3), testing fluctuation of an instrument, testing environment and the like can be eliminated, and therefore the accurate resistance value is obtained, and meanwhile, the testing flow of the resistance is simplified.
Example 2
In another embodiment of the accurate resistance testing apparatus for a display panel of the present utility model, specifically, as shown in fig. 3, unlike in embodiment 1, the fifth and sixth resistors R5 and R6 are disposed between the third and fifth test pads C and E.
The operation of this embodiment will be described below.
In this embodiment, the resistance of the first VIA1 can be accurately obtained by measuring 3 groups of resistance values simultaneously, and interference of factors such as the wiring resistance (i.e., the second resistor R2 and the third resistor R3), the test fluctuation of the instrument, the test environment, and the like can be eliminated, so that an accurate resistance value is obtained, and meanwhile, the test flow of the resistor is simplified.
Example 3
The accurate resistance test apparatus for a display panel provided in embodiment 1 or 2 was further optimized, in particular,
as shown in fig. 4 and 5, a display lamp K is disposed on one side of each of the first, second, third, fourth, fifth and sixth test pads a, B, C, D, E and F.
The operation of this embodiment will be described below.
When testing, once the test pad is connected to the circuit, the display lamp K beside the test pad is lighted, so that a user can quickly know the current circuit connection condition, and the test pad is clear and reliable, thereby being beneficial to improving the test efficiency.
Example 4
The accurate resistance test apparatus for a display panel provided in embodiment 1 or 2 was further optimized, in particular,
as shown in fig. 6 and 7, a first limiting bayonet 11 is provided on one side of the base plate 1, and a second limiting bayonet 12 is provided on the other side of the base plate.
The operation of this embodiment will be described below.
When the testing device is installed, the bottom plate 1 can be accurately fixed in the shell of the display panel by using the first limiting bayonet 11 and the second limiting bayonet 12, so that the testing device is not easy to shake, and the reliability of the testing device is improved.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
It is apparent that the above-described embodiments are only some embodiments of the present utility model, but not all embodiments, and the preferred embodiments of the present utility model are shown in the drawings, which do not limit the scope of the patent claims. This utility model may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the utility model are directly or indirectly applied to other related technical fields, and are also within the scope of the utility model.
Claims (10)
1. The accurate resistance testing device for the display panel is characterized by comprising a first testing pad (A), a second testing pad (B), a third testing pad (C), a fourth testing pad (D), a fifth testing pad (E) and a sixth testing pad (F), wherein a first resistor (R1) is arranged between the first testing pad (A) and the second testing pad (B), a second resistor (R2) and a third resistor (R3) are arranged between the second testing pad (B) and the fourth testing pad (D), a fourth resistor (R4) is arranged between the third testing pad (C) and the fourth testing pad (D), a fifth resistor (R5) and a sixth resistor (R6) are arranged between the fourth testing pad (D) and the sixth testing pad (F), a seventh resistor (R7) is arranged between the fifth testing pad (A) and the second testing pad (B), a fifth resistor (R3) and a sixth resistor (VIR 1) are arranged between the third testing pad (C) and the fourth testing pad (D), a fifth resistor (R4) is arranged between the fourth testing pad (D) and the sixth testing pad (F), a fifth resistor (R5) and a sixth resistor (VIR 6) is arranged between the fifth resistor (R2) and the fifth resistor (VIR 1) is arranged between the fifth resistor (R2 and the fifth resistor (VIR 1) and the fifth resistor (VIR 6) and the fifth resistor, the third resistor (R3) and the fourth resistor (R4) have the same resistance, the fourth resistor (R4) and the fifth resistor (R5) have the same resistance, and the sixth resistor (R6) and the seventh resistor (R7) have the same resistance.
2. The accurate resistance testing apparatus for a display panel according to claim 1, wherein the third resistor (R3) is arranged in series with the second resistor (R2), and the fifth resistor (R5) is arranged in series with the sixth resistor (R6).
3. The accurate resistance testing apparatus for a display panel according to claim 1, wherein the first resistor (R1) and the second resistor (R2) are made of a first metal wire (M1), the third resistor (R3), the fourth resistor (R4) and the fifth resistor (R5) are made of a second metal wire (M2), and the sixth resistor (R6) and the seventh resistor (R7) are made of a third metal wire (M3).
4. The accurate resistance test apparatus for a display panel according to claim 1, wherein the first test pad (a), the second test pad (B), the third test pad (C), the fourth test pad (D), the fifth test pad (E) and the sixth test pad (F) have dimensions of 4mm x 4mm.
5. The accurate resistance test apparatus for a display panel according to claim 1, wherein the first test pad (a), the second test pad (B), the third test pad (C), the fourth test pad (D), the fifth test pad (E) and the sixth test pad (F) are provided with an anti-slip sanding layer on the surfaces thereof.
6. The accurate resistance testing device for the display panel is characterized by comprising a first testing pad (A), a second testing pad (B), a third testing pad (C), a fourth testing pad (D), a fifth testing pad (E) and a sixth testing pad (F), wherein a first resistor (R1) is arranged between the first testing pad (A) and the second testing pad (B), a second resistor (R2) and a third resistor (R3) are arranged between the second testing pad (B) and the fourth testing pad (D), a fourth resistor (R4) is arranged between the third testing pad (C) and the fourth testing pad (D), a fifth resistor (R5) and a sixth resistor (R6) are arranged between the third testing pad (C) and the fifth testing pad (E), a seventh resistor (R7) is arranged between the fifth testing pad (E) and the sixth testing pad (F), a first resistor (R2) and a second resistor (R3) are arranged between the third testing pad (C) and the fourth testing pad (D), a fifth resistor (R4) is arranged between the third testing pad (C) and the fifth testing pad (E) and the sixth testing pad (E), a fifth resistor (R6) is arranged between the fifth testing pad (E) and the fifth testing pad (E), a fifth resistor (VIR 6) is arranged between the fifth resistor (R2) and the fifth resistor (V resistor (R6) and the fifth resistor (V7) and the fifth resistor (7). The third resistor (R3) and the fourth resistor (R4) have the same resistance, the fourth resistor (R4) and the fifth resistor (R5) have the same resistance, and the sixth resistor (R6) and the seventh resistor (R7) have the same resistance.
7. The accurate resistance testing apparatus for a display panel according to claim 6, wherein the third resistor (R3) is disposed in series with the second resistor (R2), and the fifth resistor (R5) is disposed in series with the sixth resistor (R6).
8. The precise resistance testing device for display panel according to claim 6, wherein the first resistor (R1) and the second resistor (R2) are made of a first metal wire (M1), the third resistor (R3), the fourth resistor (R4) and the fifth resistor (R5) are made of a second metal wire (M2), and the sixth resistor (R6) and the seventh resistor (R7) are made of a third metal wire (M3).
9. The accurate resistance test apparatus for a display panel according to claim 6, wherein the first test pad (a), the second test pad (B), the third test pad (C), the fourth test pad (D), the fifth test pad (E) and the sixth test pad (F) have dimensions of 4mm x 4mm.
10. The accurate resistance test apparatus for a display panel according to claim 6, wherein the first test pad (a), the second test pad (B), the third test pad (C), the fourth test pad (D), the fifth test pad (E) and the sixth test pad (F) are provided with an anti-slip sanding layer on the surfaces thereof.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320795291.2U CN220019735U (en) | 2023-04-11 | 2023-04-11 | Accurate resistance testing device for display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320795291.2U CN220019735U (en) | 2023-04-11 | 2023-04-11 | Accurate resistance testing device for display panel |
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| CN220019735U true CN220019735U (en) | 2023-11-14 |
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