CN107229144B - Testing jig and testing method for display panel - Google Patents
Testing jig and testing method for display panel Download PDFInfo
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- CN107229144B CN107229144B CN201710597913.XA CN201710597913A CN107229144B CN 107229144 B CN107229144 B CN 107229144B CN 201710597913 A CN201710597913 A CN 201710597913A CN 107229144 B CN107229144 B CN 107229144B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N19/08—Detecting presence of flaws or irregularities
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Abstract
The embodiment of the invention discloses a test fixture and a test method for a display panel. Wherein, this display panel's test fixture includes: the test platform comprises a support platform and a support convex part, wherein the first end of the support convex part is connected to the edge of the support platform, and the second end of the support convex part is in contact with the edge area of the display panel to be tested and is used for supporting the display panel to be tested to be placed in parallel with the support platform; the first ends of the elastic components are fixed on the supporting platform and positioned in the surrounding area of the supporting convex components, and the second ends of the elastic components face the display panel to be tested; the force application component is used for applying pressure to a plurality of test points on one side of the display panel to be tested, which is far away from the test board; and the signal applying circuit is used for inputting scanning signals and data signals to the display panel to be tested so as to light the sub-pixels of the display panel to be tested. The technical scheme of the embodiment of the invention can improve the test level of the display panel.
Description
Technical Field
The invention relates to the technical field of display, in particular to a test fixture and a test method for a display panel.
Background
The display panel is inevitably influenced by uncertain external force in the transportation or customer use process, so that the problems of poor quality and the like of products occur.
At present, before the display panel leaves a factory, the display panel is generally flatly placed on a machine table for detection, and the quality of the display panel is tested by applying a test pressure to the back of the display panel. If the picture display of the display panel after the pressure test is still normal, the display panel passes the verification, and if the sub-pixel display of the display panel after the pressure test is poor, for example, the sub-pixel has bright spots, the display panel does not pass the verification. Of course, in the pressure test, there is also a case where the display panel is broken, and the display panel is not verified.
However, in the display panel that has passed the pressure test and the verification, there is still a problem that the screen display is not good in actual use.
Disclosure of Invention
The embodiment of the invention provides a test fixture and a test method for a display panel, which are used for improving the test accuracy of the display panel.
In a first aspect, an embodiment of the present invention provides a test fixture for a display panel, including:
the test platform comprises a support platform and a support convex part, wherein the first end of the support convex part is connected to the edge of the support platform, and the second end of the support convex part is in contact with the edge area of the display panel to be tested and is used for supporting the display panel to be tested to be placed in parallel with the support platform;
the first ends of the elastic components are fixed on the supporting platform and positioned in the surrounding area of the supporting convex components, and the second ends of the elastic components face the display panel to be tested;
the force application component is used for applying pressure to a plurality of test points on one side of the display panel to be tested, which is far away from the test board;
and the signal applying circuit is used for inputting scanning signals and data signals to the display panel to be tested so as to light the sub-pixels of the display panel to be tested.
Further, the elastic component comprises a spring and a cushion block, wherein the first end of the spring is fixed on the supporting platform, and the second end of the spring is connected with the cushion block.
Further, the support protrusion member is continuously disposed around the edge of the support platform.
Further, the plurality of elastic members are arranged in a matrix form.
Further, the elastic component is at least partially opposite to and/or staggered from the test point.
Further, before testing the display panel to be tested, the distance between the second end of the supporting protrusion and the second ends of the plurality of elastic members along the direction perpendicular to the plane of the supporting platform and pointing to the supporting platform is [ -3mm, 3mm ].
Further, still include: a first drive mechanism;
the first ends of the supporting convex parts are inserted into the supporting platform, and the first driving mechanism is used for driving the supporting convex parts to ascend and descend so as to adjust the distance between the second ends of the supporting convex parts and the second ends of the elastic parts along the direction which is perpendicular to the plane of the supporting platform and points to the supporting platform.
Further, still include: a second drive mechanism;
the second driving mechanism is used for driving the plurality of elastic components to ascend and descend so as to adjust the distance between the second end of the supporting convex component and the second ends of the plurality of elastic components along the direction which is vertical to the plane of the supporting platform and points to the supporting platform.
In a second aspect, an embodiment of the present invention further provides a method for testing a test fixture of a display panel, where the method includes:
s1, after the display panel to be tested is placed on the test board, the force application component applies preset pressure to a test point on one side of the display panel to be tested, which is far away from the test board;
s2, inputting a scanning signal and a data signal to the display panel to be tested by the signal applying circuit so as to light the sub-pixels of the display panel to be tested;
s3, judging whether the display panel to be tested is cracked and/or the sub-pixel brightness of the display panel to be tested is uneven; if yes, go to S4; otherwise, go to S5;
s4, judging that the display panel to be tested does not pass test verification;
s5, judging whether test points exist or not; if the test points are not tested, executing S6, otherwise executing S7;
s6, replacing another untested test point; and returns to execution S1;
and S7, judging that the display panel to be tested passes the test verification.
Further, the distance between the second end of the support protrusion part and the second ends of the plurality of elastic parts includes 1 st preset height to n th preset height;
after the display panel to be tested is placed on the test bench, the application of force part to the display panel to be tested and before a test point of one side deviating from the test bench exerts preset pressure still includes:
s0, adjusting the distance between the second end of the supporting convex part and the second ends of the elastic parts to the ith preset height along the direction which is vertical to the plane where the supporting platform is and points to the supporting platform;
if the determination result at S5 is "no", the method further includes, before performing S7:
s8, judging whether the 1 st to the nth preset heights are tested or not; if yes, executing S7, otherwise executing S9;
s9, replacing another untested preset height; and returns to execution S1;
wherein n is a positive integer greater than 1, and i is a positive integer greater than or equal to 1 and less than or equal to n.
According to the technical scheme of the embodiment of the invention, the plurality of elastic components are arranged on the supporting platform of the test board, the display panel to be tested is arranged on the supporting convex components, when the force application component applies pressure to the plurality of test points on one side of the display panel to be tested, which is far away from the test board, the display panel to be tested generates certain bending deformation under the action of the pressure, and further the elastic force of the elastic components at the bottom is applied, the bending degrees are different, and the magnitude and the direction of the applied elastic force of the elastic components are different, so that the uncertain external force action of various directions and magnitudes applied to the product in the transportation and actual use processes can be simulated, the problem that the test is inaccurate because only the vertical stress condition can be simulated in the conventional test is solved, and the test level of the display panel is improved.
Drawings
Fig. 1 is a schematic top view of a testing fixture for a display panel without a display panel to be tested according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional structure diagram of a test fixture for a display panel when the display panel to be tested is placed thereon according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional structure diagram of a test fixture for a display panel, which is used for placing the display panel to be tested and performing a pressure test according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating an arrangement of elastic members and test points according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional structure diagram of a testing fixture for a display panel when a display panel to be tested is not placed in the testing fixture according to an embodiment of the present invention;
fig. 6 is a schematic cross-sectional structure diagram of another testing fixture for a display panel when a display panel to be tested is placed thereon according to an embodiment of the present invention;
FIG. 7 is a testing method of a display panel according to an embodiment of the present invention;
fig. 8 is a diagram illustrating another testing method for a display panel according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
An embodiment of the present invention provides a test fixture for a display panel, where fig. 1 is a schematic top view structure diagram of a test fixture for a display panel when a display panel to be tested is not placed, and fig. 2 is a schematic cross-sectional structure diagram of a test fixture for a display panel when a display panel to be tested is placed, where, with reference to fig. 1 and fig. 2, the test fixture for a display panel includes: a test station 110, a plurality of elastic members 120, a force application member 130, and a signal application circuit 140.
The testing platform 110 includes a supporting platform 111 and a supporting protrusion member 112, a first end of the supporting protrusion member 112 is connected to an edge of the supporting platform 111, and a second end of the supporting protrusion member 112 contacts with an edge region of the display panel 210 to be tested, so as to support the display panel 210 to be tested to be placed parallel to the supporting platform 111; a plurality of elastic members 120, wherein first ends of the plurality of elastic members 120 are fixed on the supporting platform 111 and located in the area surrounded by the supporting protrusion member 112, and second ends of the plurality of elastic members 120 face the display panel 210 to be tested; the force application component 130 is used for applying pressure to a plurality of test points on one side of the display panel 210 to be tested, which is far away from the test bench; the signal applying circuit 140 is used for inputting a scan signal and a data signal to the display panel 210 to be tested to light up the sub-pixels of the display panel to be tested.
In the technical solution of this embodiment, a plurality of elastic members 120 are disposed on a supporting platform 111 of a testing platform 110, and a display panel 210 to be tested is disposed on a supporting protrusion member 112, when a force application member 130 applies a pressure to a plurality of testing points on a side of the display panel 210 to be tested, which is away from the testing platform 110, the display panel 210 to be tested is subjected to a bending deformation to a certain extent under the action of the pressure, as shown in fig. 3, fig. 3 is a schematic cross-sectional structure diagram of a testing fixture for a display panel, which is provided by an embodiment of the present invention and is placed with the display panel to be tested and is subjected to a pressure test, and further, under the action of the elastic force of the elastic members 120 at the bottom, different bending degrees cause different deformation amounts of the elastic members 120, and the elastic force and the direction of the elastic members 120 to be tested are different, so as to simulate the external force action of uncertainty of the product in, the problem of in the conventional test, can only simulate the display panel vertical stress condition that awaits measuring, the test that causes is inaccurate is solved to improve the test level to the display panel.
When the frame of the display panel 210 to be tested is wide, that is, the width of the non-display area 211 is large, the second end of the supporting protrusion 112 is arranged to contact with at least a part of the non-display area 211 of the display panel 210 to be tested; when the frame of the display panel 210 to be tested is narrow, that is, the width of the non-display region 211 is small, the second end of the supporting protrusion 112 is disposed to contact the non-display region 211 and a portion of the display region 212. Optionally, the surrounding area of the supporting protrusion part 112 is greater than or equal to the display area 212 of the display panel 210, so that the elastic part 120 is distributed under the entire display area 212 of the display panel to test the entire display area 212 of the display panel 210.
In view of the above, if the outer edge of the surrounding area of the supporting protrusion part 112 is smaller than the outer edge of the display panel 210 to be tested, a test point cannot be set in a portion of the area of the display panel 210 to be tested that exceeds the outer edge of the surrounding area of the supporting protrusion part 112, and the test point cannot be set for testing, otherwise, if the test point is set and pressure is applied to one end of the portion of the area of the display panel 210 to be tested that exceeds the outer edge of the surrounding area of the supporting protrusion part 112, the other end of the display panel 210 to be tested will tilt at a large angle, and the test cannot be performed, so for this technical problem, alternatively, as shown in fig. 2, the outer edge of the surrounding area of the supporting protrusion part 112 and the outer edge of the display panel 210 to be tested are aligned in the vertical direction, or, in view of the top view, the outer edge, the testing area of the display panel is increased, and then the edge of the display area of the display panel is tested (in the practical application process of the display panel, the problem that the display failure is easy to occur in the sub-pixels at the edge of the display area is found, so the edge of the display area of the display panel needs to be tested).
The support protrusion parts 112 may be disposed on both sides of the edge of the support platform 111, or may be disposed intermittently around the edge of the support platform 111. Alternatively, as shown in fig. 1, the support protrusion 112 is continuously disposed around the edge of the support platform 111, so that the quality of the edge of the display area can be better tested. The number of the elastic components is set according to the size of the display panel to be detected. The elastic coefficients and the natural lengths of the elastic components are the same, and the deformation of the elastic components does not exceed the elastic range in the process of testing the display panel to be tested. The plurality of elastic components can be distributed in a disordered way or in a regular way; alternatively, as shown in fig. 1, the plurality of elastic members 120 are arranged in a matrix. Optionally, referring to fig. 2, the elastic member 120 includes a spring 121 and a pad 122, wherein a first end of the spring 121 is fixed on the supporting platform 111, and a second end of the spring 121 is connected to the pad 122.
It should be noted that the display panel to be tested includes an array substrate and an opposite substrate, where the array substrate and the opposite substrate are disposed opposite to each other. The display panel to be tested may be a liquid crystal display panel or an OLED (organic light-emitting diode) display panel. If the display panel is a liquid crystal display panel, the opposite substrate may be a color film substrate, and if the display panel is an OLED display panel, the opposite substrate may be an encapsulation substrate. When the display panel to be tested is placed on the supporting convex parts, one side of the opposite substrate of the display panel to be tested can be contacted with the supporting convex parts, and pressure is applied to the opposite substrate of the display panel to be tested through the force application parts on one side of the array substrate of the display panel to be tested. The number of the test points on the display panel to be tested is designed according to the size of the display panel to be tested, and the test points can be arranged in a display area and/or a non-display area. The distribution of the test points on the display panel to be tested may be a random distribution or a regular distribution, for example, referring to fig. 4, fig. 4 is a schematic diagram of the distribution of the elastic component and the test points provided in the embodiment of the present invention, and optionally, the elastic component 120 and the test point 131 are at least partially vertically opposite and/or staggered. The magnitude and duration of the pressure applied by the force applying member 130 to each test point 131 are set according to the quality requirements of the display panel 210 under test. After the force application member 130 applies pressure to the test points of the display panel 210 to be tested, the signal application circuit 140 inputs scan signals and data signals to the display panel 210 to be tested to light the sub-pixels of the display panel 210 to be tested, or when the force application member 130 applies pressure to the test points of the display panel 210 to be tested, the signal application circuit 140 inputs scan signals and data signals to the display panel 210 to be tested to light the sub-pixels of the display panel 210 to be tested.
Referring to fig. 2 and 5, fig. 5 is a schematic cross-sectional structural view of a test fixture for a display panel when a display panel to be tested is not placed, according to an embodiment of the present invention, wherein a second end of the supporting protrusion 112 in fig. 2 is higher than second ends of the elastic members 120, and a second end of the supporting protrusion 112 in fig. 5 is lower than second ends of the elastic members 120. Optionally, before testing the display panel 210 to be tested, the distance d between the second end of the supporting protrusion 112 and the second ends of the elastic members 120 along the direction perpendicular to the plane of the supporting platform 111 and pointing to the supporting platform 111 is [ -3mm, 3mm ]. The distance between the second end of the support protrusion part 112 and the second ends of the plurality of elastic parts 120 is set according to quality requirements of different types of display panels. Specifically, the smaller the thickness of the display panel 210 to be tested, the smaller the absolute value of the distance between the second end of the support protrusion part 112 and the second ends of the plurality of elastic parts 120 is set to, for example, [ -2mm, 2mm ].
An embodiment of the present invention provides another testing fixture for a display panel, and fig. 6 is a schematic cross-sectional structure diagram of another testing fixture for a display panel when a display panel to be tested is placed thereon according to an embodiment of the present invention, as shown in fig. 6, the testing fixture further includes, on the basis of the above embodiment: a first drive mechanism 150; the first end of the supporting protrusion 112 is inserted into the supporting platform 111, and the first driving mechanism 150 is configured to drive the supporting protrusion 112 to ascend and descend so as to adjust a distance between the second end of the supporting protrusion 112 and the second ends of the plurality of elastic members 120 along a direction perpendicular to a plane where the supporting platform 111 is located and pointing to the supporting platform 111. The first driving mechanism 150 drives the supporting protrusion 112 to ascend and descend to adjust the distance between the second end of the supporting protrusion 112 and the second ends of the elastic members 120, so as to gradually change the distance between the second end of the supporting protrusion 112 and the second ends of the elastic members 120, thereby completing the test of the display panel 210 to be tested at different distances.
The embodiment of the present invention provides another testing fixture for a display panel, and with reference to fig. 6, on the basis of the above embodiment, the testing fixture further includes: a second drive mechanism 160; the second driving mechanism 160 is configured to drive the plurality of elastic members 120 to ascend and descend so as to adjust a distance between the second end of the supporting protrusion member 112 and the second end of the plurality of elastic members 120 along a direction perpendicular to the plane of the supporting platform 111 and pointing to the supporting platform 111. The second driving mechanism 160 drives the plurality of elastic members 120 to ascend and descend, so as to adjust the distance between the second end of the supporting protrusion member 112 and the second ends of the plurality of elastic members 120, and further gradually change the distance between the second end of the supporting protrusion member 112 and the second ends of the plurality of elastic members 120, thereby completing the test of the display panel 120 to be tested at different distances.
Fig. 7 is a diagram illustrating a method for testing a display panel according to an embodiment of the present invention, which can be implemented by a test fixture for a display panel according to any embodiment of the present invention, and the method specifically includes the following steps:
step S1, after the display panel to be tested is placed on the testing platform, the force application component applies a preset pressure to a testing point on a side of the display panel to be tested, which is away from the testing platform.
The main material of the display panel is made of glass, and the glass is a fragile material. After the force application component applies a preset pressure to a test point on one side of the display panel to be tested, which is far away from the test bench, the display panel to be tested may break. The preset pressure may be 10 n and the duration of applying the preset pressure may be 30 seconds or 60 seconds.
Step S2, the signal applying circuit inputs the scan signal and the data signal to the display panel to be tested to light the sub-pixels of the display panel to be tested.
It should be noted that, after the force application component applies the preset pressure to a test point on a side of the display panel to be tested, which is away from the test board, the internal structure of the display panel may be damaged, so that when the signal application circuit inputs the scan signal and the data signal to the display panel to be tested, the sub-pixels of the display panel to be tested may have poor display, for example, the luminance of the sub-pixels may be uneven, and bright spots may be generated.
Step S3, determining whether the display panel to be tested is cracked and/or the sub-pixel brightness of the display panel to be tested is not uniform.
If the display panel to be tested is cracked and/or the sub-pixel brightness of the display panel to be tested is not uniform, determining that the display panel to be tested does not pass the test verification, and executing step S4; otherwise, judging whether test points are left or not, if so, replacing another test point which is not tested, returning to continue executing the step S1 to the step S3 until the force application component applies preset pressure to the plurality of test points on the side of the display panel to be tested, which deviates from the test board, one by one to complete the test; otherwise, judging that the display panel to be tested passes the test verification.
And step S4, judging that the display panel to be tested does not pass the test verification.
And step S5, judging whether test points exist and are not tested.
And step S6, replacing another untested test point.
And step S7, judging that the display panel to be tested passes the test verification.
It should be noted that, step S1 and step S2 may be performed simultaneously, or step S1 may be performed on each test point first, and then whether the display panel to be tested is broken is determined, and if the display panel to be tested is broken, it is determined that the display panel to be tested does not pass the test verification; if the to-be-tested display panel is not cracked, step S2 is performed, and it is determined whether sub-pixel brightness of the to-be-tested display panel is non-uniform, if so, it is determined that the to-be-tested display panel fails the test verification, otherwise, it is determined that the to-be-tested display panel passes the test verification.
Fig. 8 is a diagram illustrating a further method for testing a display panel according to an embodiment of the present invention, which is optimized based on the embodiment of the present invention, and the method specifically includes the following steps:
and step S0, adjusting the distance between the second end of the supporting convex part and the second ends of the plurality of elastic parts to be the ith preset height along the direction which is vertical to the plane of the supporting platform and points to the supporting platform.
The distance between the second end of the supporting convex part and the second ends of the elastic parts comprises a 1 st preset height to an nth preset height; wherein n is a positive integer greater than 1. The ith preset height is one of n preset heights from the 1 st preset height to the nth preset height.
Step S1, after the display panel to be tested is placed on the testing platform, the force application component applies a preset pressure to a testing point on a side of the display panel to be tested, which is away from the testing platform.
Step S2, the signal applying circuit inputs the scan signal and the data signal to the display panel to be tested to light the sub-pixels of the display panel to be tested.
Step S3, determining whether the display panel to be tested is cracked and/or the sub-pixel brightness of the display panel to be tested is not uniform.
If the display panel to be tested is cracked and/or the sub-pixel brightness of the display panel to be tested is not uniform, the step S4 is executed, otherwise, the step S5 is executed.
And step S4, judging that the display panel to be tested does not pass the test verification.
And step S5, judging whether test points exist and are not tested.
If there are more test points not tested, step S6 is executed, otherwise, step S8 is executed.
And step S6, replacing another untested test point.
After replacing another untested test point, returning to continue to execute step S1 until the force application member applies a preset pressure to the plurality of test points on the side of the display panel to be tested departing from the test board one by one, so as to complete the test when the distance between the second end of the support protrusion member and the second ends of the plurality of elastic members is the current preset height.
Step S8, determining whether the 1 st to nth preset heights are tested.
If the 1 st to nth preset heights are tested, the step S7 is executed, otherwise, the step S9 is executed.
And step S7, judging that the display panel to be tested passes the test verification.
Step S9, replace another untested preset height.
The replacement of another untested preset height may be performed by adjusting a distance between the second end of the supporting protrusion and the second ends of the plurality of elastic members to a jth preset height in a direction perpendicular to the plane of the supporting platform and pointing to the supporting platform, where the jth preset height is one of n preset heights from the 1 st preset height to the nth preset height. i and j are positive integers which are more than or equal to 1 and less than or equal to n, and i is not equal to j. When the distance between the second end of the supporting convex part and the second ends of the plurality of elastic parts along the direction which is vertical to the plane of the supporting platform and points to the supporting platform is the jth preset height, returning to continue to execute the step S1; and judging whether the display panel to be tested is cracked and/or the sub-pixel brightness of the display panel to be tested is uneven when the force application component applies preset pressure to the plurality of test points on the side, deviating from the test board, of the display panel to be tested one by one until the preset pressure is applied one by one from the 1 st preset height to the n th preset height to complete the test.
It should be noted that the test method for a display panel provided in the embodiment of the present invention is based on the test fixture for a display panel provided in any embodiment of the present invention, and has the beneficial effects described in the embodiments above, and details are not repeated herein.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The utility model provides a display panel's test fixture which characterized in that includes:
the test platform comprises a support platform and a support convex part, wherein the first end of the support convex part is connected to the edge of the support platform, and the second end of the support convex part is in contact with the edge area of the display panel to be tested and is used for supporting the display panel to be tested to be placed in parallel with the support platform;
the first ends of the elastic components are fixed on the supporting platform and located in the surrounding area of the supporting convex components, and the second ends of the elastic components face the display panel to be tested;
the force application component is used for applying pressure to a plurality of test points on one side of the display panel to be tested, which is far away from the test board;
and the signal applying circuit is used for inputting scanning signals and data signals to the display panel to be tested so as to light the sub-pixels of the display panel to be tested.
2. The testing fixture of claim 1, wherein the resilient member comprises a spring and a pad, wherein a first end of the spring is fixed on the supporting platform, and a second end of the spring is connected to the pad.
3. The testing fixture of claim 1, wherein the supporting protrusion is continuously disposed around the edge of the supporting platform.
4. The testing fixture of claim 1, wherein the plurality of elastic members are arranged in a matrix.
5. The testing fixture of claim 1, wherein the elastic member is at least partially vertically opposite and/or offset from the testing point.
6. The testing fixture of claim 1, wherein before testing the display panel under test, a distance between the second ends of the supporting protrusion members and the second ends of the elastic members along a direction perpendicular to a plane of the supporting platform and pointing to the supporting platform is [ -3mm, 3mm ].
7. The testing fixture of claim 1, further comprising: a first drive mechanism;
the first end of the supporting convex part is inserted into the supporting platform, and the first driving mechanism is used for driving the supporting convex part to ascend and descend so as to adjust the distance between the second end of the supporting convex part and the second ends of the plurality of elastic parts along the direction which is vertical to the plane of the supporting platform and points to the supporting platform.
8. The testing fixture of claim 1, further comprising: a second drive mechanism;
the second driving mechanism is used for driving the plurality of elastic components to ascend and descend so as to adjust the distance between the second end of the supporting convex component and the second ends of the plurality of elastic components along the direction which is perpendicular to the plane of the supporting platform and points to the supporting platform.
9. A method for testing the test fixture of the display panel according to any one of claims 1 to 8, comprising:
s1, after the display panel to be tested is placed on the test board, the force application component applies preset pressure to a test point on one side of the display panel to be tested, which is far away from the test board;
s2, inputting a scanning signal and a data signal to the display panel to be tested by the signal applying circuit so as to light the sub-pixels of the display panel to be tested;
s3, judging whether the display panel to be tested is cracked and/or the sub-pixel brightness of the display panel to be tested is uneven; if yes, go to S4; otherwise, go to S5;
s4, judging that the display panel to be tested does not pass test verification;
s5, judging whether test points exist or not; if the test points are not tested, executing S6, otherwise executing S7;
s6, replacing another untested test point; and returns to execution S1;
s7, judging that the display panel to be tested passes test verification;
after the display panel to be tested is placed on the test bench, the force application component applies preset pressure to a test point on one side of the display panel to be tested, which is deviated from the test bench, and the method further comprises the following steps:
and S0, adjusting the distance between the second end of the supporting convex component and the second ends of the plurality of elastic components to the ith preset height along the direction which is vertical to the plane of the supporting platform and points to the supporting platform.
10. The method of claim 9, wherein a distance between the second end of the support protrusion and the second ends of the plurality of elastic members comprises a 1 st predetermined height to an nth predetermined height;
if the determination result at S5 is "no", the method further includes, before performing S7:
s8, judging whether the 1 st to the nth preset heights are tested or not; if yes, executing S7, otherwise executing S9;
s9, replacing another untested preset height; and returns to execution S1;
wherein n is a positive integer greater than 1, and i is a positive integer greater than or equal to 1 and less than or equal to n.
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| CN109031729B (en) * | 2018-09-27 | 2021-10-08 | Tcl华星光电技术有限公司 | Withstand voltage testing device for liquid crystal display panel |
| CN111798780B (en) * | 2020-08-10 | 2023-07-28 | 京东方科技集团股份有限公司 | Testing device and testing method |
| CN112461664A (en) * | 2020-11-30 | 2021-03-09 | 武汉天马微电子有限公司 | Display panel test fixture and test method thereof |
| US11906827B2 (en) | 2021-03-15 | 2024-02-20 | Beijing Boe Display Technology Co., Ltd. | Method for determining light-leakage degree of display panel, test fixture and computer-readable storage medium |
| CN114055412A (en) * | 2021-11-29 | 2022-02-18 | 霸州市云谷电子科技有限公司 | Platform structure and laminating device |
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