CN210638874U

CN210638874U - Drop test fixture of display module

Info

Publication number: CN210638874U
Application number: CN201921000476.XU
Authority: CN
Inventors: 崔佳明; 林丹; 姜立明; 孙志勇
Original assignee: InfoVision Optoelectronics Kunshan Co Ltd
Current assignee: InfoVision Optoelectronics Kunshan Co Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-05-29
Anticipated expiration: 2029-06-28

Abstract

The utility model provides a pair of display module assembly's test fixture that falls should fall test fixture includes: the falling platform and the lifting platform arranged on the falling platform are provided with a centering baffle, the display module is arranged on the supporting plate under the centering baffle in a suspended mode, the supporting plate is arranged in parallel with the centering baffle, the supporting plate is movably connected with the lifting platform and can swing back and forth relative to the plane where the centering baffle is arranged, the falling test fixture achieves free falling of the display module at a fixed height, the reliability of a test result can be greatly improved, the falling mode of the display module is standardized, and the phenomenon that the panel is damaged due to the fact that the non-horizontal falling of the display module falls to the ground is avoided.

Description

Drop test fixture of display module

Technical Field

The utility model relates to a test equipment technical field, concretely relates to display module assembly falls test fixture.

Background

With the development of Liquid Crystal Display technology, Liquid Crystal Display devices (LCDs) have become more and more popular in use in life by virtue of their advantages of thin body, power saving, no radiation, etc. The Liquid Crystal display device in the existing market is composed of a Liquid Crystal display Module (LCM) and a housing thereof. The liquid crystal display module mainly comprises a backlight module and a liquid crystal panel arranged on the light-emitting side of the backlight module. The backlight module comprises a back plate, a backlight source, a light guide plate and various optical diaphragms, the liquid crystal panel comprises an array substrate, a color film substrate and a liquid crystal layer arranged between the two substrates, and a Printed Circuit Board (PCB) provided with a driving circuit is connected with the liquid crystal panel through a Flexible Printed Circuit (FPC) so as to drive the liquid crystal panel to realize a display function.

After the liquid crystal display module is manufactured, a relevant verification test is often required to be performed on the stability of the liquid crystal display module. In the diaphragm displacement verification process of the liquid crystal display module, the liquid crystal display module is subjected to a drop test and then is judged whether the optical diaphragm group displaces or not through the light leakage condition of the edge of the verification module. In order to ensure that accurate test data can be obtained under the condition that other components of the liquid crystal display module are not damaged, the falling test has clear regulations on the size of the falling stress and the falling mode of the display modules with different specifications.

The existing drop test is that after the corresponding drop height is marked by the ruler, the liquid crystal display module is manually held, so that the liquid crystal display module freely falls from a certain height. This test mode that falls by hand can lead to each module to drop the nonconformity of height because artifical error to still probably exert external force to the module at the in-process that falls by hand, lead to experimental data inaccurate, thereby can't reach due test effect. In addition, the manual falling is also easy to cause the non-horizontal landing of the display module, thereby causing the damage of the display panel in the liquid crystal display module and increasing the test cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough of prior art, provide a display module's test fixture that falls to make the test of falling need not to adopt the great ruler measurement height of error the manual test mode that falls, guaranteed the reliability of the test data that falls, standardized the mode of falling to the ground of display module simultaneously, avoid falling to the ground the phenomenon that the panel that causes because of display module's non-level falls to the ground.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

the utility model provides a display module assembly's test fixture that falls, includes: the display module comprises a falling platform and a lifting platform arranged on the falling platform, wherein a righting baffle is arranged on the lifting platform, the display module is arranged on a bearing plate suspended below the righting baffle and arranged in parallel with the righting baffle, and the bearing plate is movably connected with the lifting platform and can swing back and forth below the righting baffle relative to a plane where the righting baffle is located.

Further, the falling test fixture further comprises a limiting mechanism arranged opposite to the righting baffle, and the limiting mechanism is movably connected with the falling platform and can be close to or far away from the righting baffle.

Further, stop gear includes the connecting rod and the spacing wheel of cover on locating the connecting rod, spacing wheel pass through the connecting rod with fall the platform and rotate and be connected.

Furthermore, the lifting platform comprises two lifting supports which are oppositely arranged, and each lifting support comprises a sliding rod which is vertically arranged on the falling platform and a lifting block which is sleeved on the sliding rod.

Furthermore, the opposite sides of the lifting blocks on the two lifting brackets are provided with first sliding grooves, and the two ends of the bearing plate are correspondingly embedded in the first sliding grooves and can slide back and forth relative to the screen surface where the righting baffle is located.

Furthermore, positioning holes are formed in the opposite sides of the lifting blocks on the two lifting supports, and two ends of the bearing plate are correspondingly embedded in the positioning holes and can rotate back and forth relative to the plane where the righting baffle is located.

Furthermore, the bearing plate comprises a bearing plate body and a bearing piece, a third sliding groove parallel to the righting baffle is formed in the bearing plate body, and the bearing piece is connected with the bearing plate body in a sliding mode through the third sliding groove.

Further, the drop test fixture further comprises a driving motor, wherein the driving motor is in transmission fit with the bearing plate gear and is used for driving the bearing plate to swing back and forth relative to the righting baffle.

Furthermore, a second sliding groove is formed in the falling platform, the second sliding groove is correspondingly formed below the righting baffle, and the two alignment sliding plates are embedded in the second sliding groove and can slide in the opposite directions or in the opposite directions.

Furthermore, the sliding rod is provided with a scale mark for marking the falling height of the display module.

According to the above, the utility model provides a pair of display module assembly's test fixture that falls should fall includes: the falling platform and the lifting platform arranged on the falling platform are provided with a centering baffle, the display module is arranged on the supporting plate under the centering baffle in a suspended mode, the supporting plate is arranged in parallel with the centering baffle, the supporting plate is movably connected with the lifting platform and can swing back and forth relative to the plane where the centering baffle is arranged, the falling test fixture achieves free falling of the display module at a fixed height, the reliability of a test result can be greatly improved, the falling mode of the display module is standardized, and the phenomenon that the panel is damaged due to the fact that the non-horizontal falling of the display module falls to the ground is avoided.

Other advantages of the present invention will be described in more detail in the detailed description which follows, and in conjunction with the accompanying drawings.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation.

In the drawings:

fig. 1 is a schematic structural view of a drop test fixture for a display module according to an embodiment of the present invention;

FIG. 2 is a partially enlarged view of the connection structure between the lifting platform and the bearing plate at A in FIG. 1;

fig. 3 is a partially enlarged view of the bottom surface of the elevating platform at B in fig. 1.

Detailed Description

To further explain the technical solution of the present invention, the present invention is explained in detail below with reference to the accompanying drawings, in which like reference numerals refer to like parts.

Fig. 1 is a schematic structural view of a drop test fixture for a display module according to an embodiment of the present invention. As shown in fig. 1, the utility model provides a display module assembly's test fixture that falls specifically includes: fall and fall platform 10 and set up the lift platform on this falls platform 10, should fall platform 10 and for example can set up on a bottom plate plane through a plurality of support column to it has certain high space to make this fall platform 10, is favorable to guaranteeing the cleanness of mesa and cooperates with other subassemblies. The lifting platform can be raised or lowered relative to the plane on which the drop platform 10 is located. The drop test fixture of the display module further comprises a righting baffle 30 arranged above the bearing plate 40, the righting baffle 30 is fixedly connected with the lifting platform and is perpendicular to a plane where the drop platform 10 is located, the display module is arranged on the bearing plate 40 suspended below the righting baffle 30 and is parallel to the righting baffle 30, and therefore the display module arranged on the bearing plate 40 can be in a vertical standing state through the righting baffle 30. The bearing plate 40 is movably connected to the lifting platform and can swing back and forth below the straightening baffle 30 relative to the plane on which the straightening baffle 30 is located. The utility model discloses do not put the restriction to this wobbling range, but it should be explained that the back and forth oscillation should be able to make this loading board 40 protrusion or sink into this one side of righting baffle 30 completely. Specifically, when the bearing plate 40 swings to one side protruding out of the centering baffle 30 through the movable connection of the bearing plate 40 and the lifting platform, a display module is arranged on the bearing plate 40 on the side, and the display module is kept standing vertically through the centering baffle 40; and then the bearing plate 40 swings to be completely immersed into the other side of the righting baffle, so that the display module is separated from the support of the bearing plate 40, and the display module falls on the surface of the falling platform 10 in a free falling mode and in a horizontal mode. The embodiment of the utility model provides a through making loading board 40 for righting baffle 30 wobbling mode has guaranteed that display module assembly can remain a vertical state throughout at the in-process of this display module assembly of loading board 40 backward swing release, has ensured stable whereabouts state.

Have the condition of certain thickness at the display module assembly, it often can rely on its self stability vertical standing to rely on righting baffle 30 to guarantee the vertical whereabouts of display module assembly. However, along with the continuous thinning of the display module, the thickness of the frame of the display module is also continuously thinned, and for improving the anti-interference capability of the display module in the test process of the drop test fixture, the drop test fixture of the display module further comprises a limiting mechanism 50 which is arranged on one side of the lifting platform and used for limiting the display module. The limiting mechanism 50 is movably connected to the drop platform 10, is disposed opposite to the righting baffle 30, and can move in a direction close to or away from the plane of the righting baffle 30. For example, the movable connection may be a sliding connection or a rotating connection, and the sliding connection may be implemented by forming a sliding groove on the drop platform 10. As shown in fig. 1, the limiting mechanism 50 and the drop platform 10 in this embodiment are rotatably connected, specifically, the limiting mechanism 50 includes a connecting rod 51 and a limiting wheel 52 disposed at an end of the connecting rod 51, the connecting rod 51 is rotatably connected to the drop platform 10 by, for example, a snap-fit member, and the limiting wheel 52 is disposed in parallel on an opposite side of the vertical baffle 30 and can rotate on the connecting rod 51. In this embodiment, the rotational connection means that the limiting mechanism 50 can adjust the distance between the limiting wheel 52 and the falling platform 51 in a rotational manner, and the distance can be constant or variable during the test of the falling test fixture, for example, the distance can be slightly greater than the thickness of the display module, so that the limiting effect on the display module in the horizontal direction is achieved while the free falling of the display module is not affected; the distance may also be changed in real time, for example, when a drop test of the display module is performed, when the bearing plate 40 supports the display module, the limiting wheel 52 may be attached to the surface of the display module, and when the bearing plate 40 loses the support of the display module, the limiting wheel 52 may be driven by the connecting rod 51 to appropriately increase the distance from the righting baffle 30 in an upward rotating manner, so that the display module may fall freely. In this embodiment, the limiting mechanism 50 also has the function of preventing the display module from falling outward when the display module falls onto the falling platform 10. Of course, in other embodiments, a cover-like structure may be disposed above the centering baffle 30 to limit the display module.

FIG. 2 is a partial enlarged view of the connection structure of the lifting platform and the supporting plate at A in FIG. 1, as shown in FIG. 1 and FIG. 2, in the drop test fixture for a display module according to an embodiment of the present invention, the lifting platform specifically comprises two oppositely arranged lifting brackets 20, each lifting bracket 20 comprises a sliding rod 22 vertically arranged on the falling platform 10 and a lifting block 21 sleeved on the sliding rod 22, opposite sides of the lifting blocks 21 on the two lifting brackets 20 are respectively provided with a first sliding groove 23, the two ends of the bearing plate 40 are embedded in the first sliding groove 23 and are connected with the lifting block 21 in a sliding manner through the sliding groove 23, the righting baffle 30 is erected on the two oppositely arranged lifting blocks 21 and is fixedly connected with the lifting blocks 21, the bearing plate 40 can slide back and forth relative to the plane where the righting baffle 30 is located, and cooperates with the righting baffle 30 to realize the placement and release of the display module placed on the bearing plate 40. The elevating block 21 moves up or down along the sliding bar 22 to adjust the height of the loading plate 40 and particularly the falling platform 10. The utility model discloses an in other embodiments, the opposite side of the lifter 21 on two lifting support 20 can be provided with the locating hole respectively, and the both ends correspondence of loading board 40 is inlayed and is located in this locating hole and rotate with this lifter 21 and be connected, and loading board 40 can be for this plane front and back rotation at right baffle 30 place to cooperate with this right baffle 30 and realize placing and releasing of placing the display module assembly on loading board 40.

Further, be provided with the scale mark on this slide bar 22, this scale mark is used for marking the height that falls of display module assembly to need not to adopt the mode of artifical handheld ruler to measure its height. To some printed circuit board not back of the body fold to the display module assembly on the backplate, it falls to falling when falling on the platform 10 from a take the altitude, may cause the damage of printed circuit board, therefore, in order to avoid the emergence of this kind of condition, should fall on the platform 10 that falls of test fixture, for example, still be provided with second sliding tray 11, this second sliding tray 11 corresponds sets up in this below of righting baffle 30, two counterpoint slide plates 12 inlay locate in this second sliding tray 11 and can be in opposite directions or the back of the body slip, in the in-process of carrying out the drop test to the display module assembly, for example, can make the display module assembly when falling to falling on the platform 10 through the mode of drawing two counterpoint sliders outward, the position that sets up printed circuit board corresponds falls into two counterpoint sliders and falls in the common recess that forms of platform 10, avoid the condition that printed circuit board is damaged to take place.

In this embodiment, in order to make the drop test fixture of the display module suitable for display modules with different specifications, the carrier plate 40 includes, for example, a carrier plate body and a carrier plate 42 disposed on one side of the carrier plate body, the carrier plate body is provided with a third sliding groove 41 parallel to the centering baffle, and the carrier plate 42 is slidably connected to the carrier plate body through the third sliding groove 41 to adjust the distance between the carrier plates 42 in real time. The bearing sheet 42 is used for carrying the display module, so that the jig is suitable for display modules of different specifications, and meanwhile, the jig material can be saved, and the jig cost is reduced. In the case that the stop mechanism 50 is disposed on the drop platform 10, the carrier sheet 42 should be disposed on the side facing the stop mechanism 50.

Fig. 3 is a partially enlarged view of the bottom surface of the elevating platform at B in fig. 1. As shown in fig. 1 and 3, the drop test fixture of the display module further includes a driving motor 60. The driving motor 60 can be used to drive the up-and-down movement of the elevator block 21 on the slide rod 22, and can also be used to drive the rotation or sliding movement of the stopper mechanism 50. Specifically, in the present embodiment, the driving motor 60 is, for example, in gear-driven cooperation with the supporting plate 40, and is used for driving the supporting plate 40 to slide back and forth relative to the straightening baffle 30, so as to realize the supporting or releasing function of the supporting plate on the display module.

The above description is only for the specific embodiments of the present invention, and it should be noted that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention.

Claims

1. The utility model provides a display module assembly's test fixture that falls which characterized in that includes: the display module comprises a falling platform and a lifting platform arranged on the falling platform, wherein a righting baffle is arranged on the lifting platform, the display module is arranged on a bearing plate suspended below the righting baffle and arranged in parallel with the righting baffle, and the bearing plate is movably connected with the lifting platform and can swing back and forth below the righting baffle relative to a plane where the righting baffle is located.

2. The drop test fixture of a display module assembly of claim 1, further comprising a limiting mechanism disposed opposite to the righting baffle, wherein the limiting mechanism is movably connected to the drop platform and can be close to or away from the righting baffle.

3. The drop test fixture of the display module assembly according to claim 2, wherein the limiting mechanism comprises a connecting rod and a limiting wheel sleeved on the connecting rod, and the limiting wheel is rotatably connected with the drop platform through the connecting rod.

4. The drop test fixture of a display module according to claim 1, wherein the lifting platform comprises two oppositely disposed lifting brackets, each of the lifting brackets comprises a sliding rod vertically disposed on the drop platform and a lifting block sleeved on the sliding rod.

5. The drop test fixture of the display module assembly according to claim 4, wherein first sliding grooves are formed in opposite sides of the lifting blocks on the two lifting brackets, and two ends of the bearing plate are correspondingly embedded in the first sliding grooves and can slide back and forth relative to a plane where the righting baffle is located.

6. The drop test fixture for the display module according to claim 4, wherein positioning holes are formed in opposite sides of the lifting blocks on the two lifting brackets, and two ends of the bearing plate are correspondingly embedded in the positioning holes and can rotate back and forth relative to a plane where the righting baffle is located.

7. The drop test fixture of a display module according to claim 1, wherein the carrier plate comprises a carrier plate body and a carrier sheet, the carrier plate body is provided with a third sliding groove parallel to the righting baffle, and the carrier sheet is slidably connected to the carrier plate body through the third sliding groove.

8. The drop test fixture of a display module of claim 1, further comprising a driving motor, wherein the driving motor is in gear transmission fit with the bearing plate and is used for driving the bearing plate to swing back and forth relative to the righting baffle.

9. The drop test fixture of the display module according to claim 1, wherein the drop platform is provided with a second sliding groove, the second sliding groove is correspondingly disposed below the righting baffle, and the two alignment sliding plates are embedded in the second sliding groove and can slide in opposite directions or in opposite directions.

10. The drop test fixture for the display module according to claim 4, wherein the sliding rod is provided with a scale mark for indicating the drop height of the display module.