CN207866218U - A kind of measurer for thickness and backlight test system - Google Patents

Abstract

The utility model discloses a thickness measuring device and a backlight testing system, which relate to the field of display technology and are used to improve the thickness measurement efficiency of the backlight module and at the same time improve the measurement accuracy of the thickness data of the backlight module. The thickness measuring device includes at least one measuring mechanism, each measuring mechanism includes a first elastic extruding module and a second elastic extruding module respectively connected to the pressure sensing module, the extruding surface of the first elastic extruding module and the second elastic extruding module The extruding surfaces of the elastic extruding modules are opposite to each other, and the extrusion surface of the first elastic extruding module and the extruding surface of the second elastic extruding module are controlled to open combined first drive module. The backlight testing system includes the thickness measuring device mentioned in the above technical solution. The thickness measuring device and the backlight test system provided by the utility model are used in backlight detection.

Description

A thickness measuring device and backlight testing system

technical field

The utility model relates to the field of display technology, in particular to a thickness measuring device and a backlight testing system.

Background technique

The backlight module is an important component of a liquid crystal display, which can provide backlight for the display panel, so that the display panel displays images; therefore, the quality of the backlight module has a great influence on the images displayed on the display panel.

In order to ensure that the fabricated backlight module meets the requirements, it is necessary to measure the thickness of the backlight module after the fabrication of the backlight module is completed. At present, using a vernier caliper to manually clamp the backlight module needs to test the position, and directly read the thickness value on the vernier caliper, but this measurement method is relatively inefficient, and human factors are greatly affected, resulting in inaccurate thickness data of the backlight module measured.

Utility model content

The purpose of the utility model is to provide a thickness measuring device and a backlight testing system, so as to improve the thickness measurement efficiency of the backlight module and at the same time improve the measurement accuracy of the thickness data of the backlight module.

In order to achieve the above object, the utility model provides the following technical solutions:

A thickness measuring device, the thickness measuring device includes at least one measuring mechanism, each of which includes a first elastic extruding module and a second elastic extruding module respectively connected to a pressure sensing module, the first elastic extruding module The extrusion surface of the compression module is opposite to the extrusion surface of the second elastic extrusion module, and a control device for controlling the first elastic extrusion is installed between the first elastic extrusion module and the second elastic extrusion module. A first drive module for opening and closing the extrusion surface of the module and the extrusion surface of the second elastic extrusion module.

Compared with the prior art, in the thickness measuring device provided by the utility model, at least one measuring mechanism includes a first elastic extruding module and a second elastic extruding module to control the extrusion of the first elastic extruding module. The first driving module for opening and closing the pressing surface and the pressing surface of the second elastic extrusion module, so that when measuring the thickness of the backlight module, the first driving module included in each measuring mechanism controls the first elastic extrusion module The extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module are opened, the backlight module is placed between the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module, and then the second elastic extrusion module is used A driving module controls the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module to gradually approach and squeeze the backlight module; in this process, as long as the pressure sensing module detects that the first elastic extrusion The pressure changes of the compression module and the second elastic extrusion module in the initial state and the measurement state, and then using the principle of elastic mechanics, the deformation distance of the first elastic extrusion module and the second elastic extrusion module in the initial state and the measurement state can be obtained and because the deformation distance variation of the first elastic extrusion module and the second elastic extrusion module in the initial state and the measurement state is because the measurement state backlight module is located on the extrusion surface of the first elastic extrusion module and the Therefore, the amount of change in the deformation distance between the first elastic extrusion module and the second elastic extrusion module in the initial state and the measurement state is substantially equal to the thickness of the backlight module .

It can be seen that the thickness measurement device provided by the utility model can convert the pressure change generated by the first elastic extrusion module and the second elastic extrusion module due to the backlight module into the deformation distance change based on the principle of elastic mechanics, thereby The thickness of the backlight module is obtained, and the automatic measurement of the thickness of the backlight module is realized, thereby improving the efficiency of measuring the thickness of the backlight module, reducing the influence of human factors, and improving the accuracy of the thickness measurement of the backlight module.

The utility model also provides a backlight test system, which includes a lighting device, a scanning device and the thickness measuring device provided by the above technical solution.

Compared with the prior art, the beneficial effect of the backlight testing system provided by the utility model is the same as that of the thickness measuring device provided by the above technical solution, and will not be repeated here.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the utility model and constitute a part of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation of the utility model . In the attached picture:

Fig. 1 is a structural schematic diagram 1 of a thickness measuring device provided by an embodiment of the present invention;

Fig. 2 is the structural schematic diagram II of the thickness measuring device provided by the embodiment of the present invention;

Fig. 3 is a schematic structural view of the measuring mechanism in the initial state in the embodiment of the utility model;

Fig. 4 is a schematic structural view of the measuring mechanism in the opening and closing state in the embodiment of the utility model;

Fig. 5 is a schematic structural view of the measuring mechanism in the measuring state in the embodiment of the present invention;

Fig. 6 is a state diagram of the cooperation between the positioning mechanism and the transmission unit in the embodiment of the present invention.

Reference signs:

1-measuring mechanism, 10-the first drive module;

10a-the first frame body, 100a-the first mounting hole;

101a-the first pressing rod, 102a-the first limiting member;

103a-the first return force spring, 10b-the second frame body;

100b-the second limiting member, 101b-the second pressing rod;

102b-the second limiter, 103b-the second return force spring;

11-the first measuring mechanism, 110-the first connecting rod;

12-the second measuring mechanism, 120-the second connecting rod;

2-base, 21-the first installation shaft;

210-the first guide groove, 22-the second installation shaft;

220-the second guide groove, 311-the positive retaining wall in the first direction;

312-negative retaining wall in the first direction, 321-positive retaining wall in the second direction;

322-the negative retaining wall in the second direction, 41-the first pressure sensor;

42-second pressure sensor, 5-scanning device;

6-positioning mechanism, 60-the second drive module;

61-the first telescopic frame, 62-the second telescopic frame;

7-transmission unit, 70-slit;

71 - the first conveyor belt, 72 - the second conveyor belt;

8- Lighting device.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Figures 1 to 3, the thickness measuring device provided by the embodiment of the present invention includes at least one measuring mechanism 1, and each measuring mechanism 1 includes a first elastic extruding module and a second elastic extruding module respectively connected to the pressure sensing module module, the extrusion surface of the first elastic extrusion module is opposite to the extrusion surface of the second elastic extrusion module, and a control device for controlling the first elastic extrusion module is arranged between the first elastic extrusion module and the second elastic extrusion module. The extrusion surface and the extrusion surface of the second elastic extrusion module are opened and closed by the first driving module 10 . Wherein, the thickness measuring device provided by the embodiment of the present invention is in an initial state, and the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module of each measuring mechanism 1 are in contact with each other. The thickness measurement device provided by the embodiment of the present invention is in the measurement state, and the backlight module is located between the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module of each measuring mechanism 1, and The top of the backlight module is in contact with the extrusion surface of the first elastic extrusion module of each measuring mechanism 1 , and the bottom of the backlight module is in contact with the extrusion surface of the second elastic extrusion module of each measurement mechanism 1 .

It can be understood that the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module in the embodiment of the utility model are opposite, which can be understood as the extrusion surface of the first elastic extrusion module and the first elastic extrusion module. The extrusion surfaces of the two elastic extrusion modules are parallel. At this time, when the backlight module is located between the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module, the measured The thickness data of the backlight module is accurate, avoiding the problem that it is difficult to ensure that the upper and lower contact surfaces of the backlight module and the vernier caliper are completely parallel to each other when manually operating the vernier caliper.

The operation process of the thickness measurement of the thickness measurement device provided by the embodiment of the present invention will be described in detail below with reference to the accompanying drawings 1 to 5 .

In the first step, the first driving module 10 of each measuring mechanism 1 is used to control the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module from contacting each other to maintaining a distance between them;

In the second step, the backlight module to be tested is placed between the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module of each measuring mechanism 1;

The third step is to use the first drive module 10 of each measuring mechanism 1 to control the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module to gradually approach until the extrusion surface of the first elastic extrusion module The thickness measuring device is in a measuring state until the pressing surface and the extrusion surface of the second elastic extrusion module stop approaching.

Wherein, when the thickness measuring device is in the initial state, the pressure sensing module detects the pressure F10 borne by the first elastic extruding module and the pressure F20 borne by the second elastic extruding module of each measuring mechanism 1 .

When the thickness measuring device measures the backlight module to be tested, the thickness measuring device is in the measuring state, and the pressure sensing module detects and detects the pressure F11 that the first elastic extrusion module of each measuring mechanism 1 bears, and the pressure F11 that the second elastic extrusion module bears Under pressure F21.

The thickness measuring device provided by the embodiment of the utility model is in the initial state, and the extrusion surface of the first elastic extrusion module exerts a certain force on the extrusion surface of the second elastic extrusion module, so that a certain force occurs on the second elastic extrusion module. elastic retraction; at the same time, the extrusion surface of the second elastic extrusion module exerts a certain reaction force on the extrusion surface of the first elastic extrusion module, so that the first elastic extrusion module undergoes a certain elastic retraction; when the utility model The thickness measuring device provided by the novel embodiment is in the measuring state, although the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module squeeze the backlight module, but due to the measured backlight module The group can apply a reaction force to the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module, and these reaction forces promote the elastic retraction of the first elastic extrusion module and the second elastic extrusion module, Based on this, according to the known elastic coefficient K of the first elastic extrusion module and the second elastic extrusion module, and according to the principle of elastic mechanics, the thickness H of the backlight module is obtained.

H=△L=△F/K=[(F11+F21)-(F10+F20)]/K, △F is the measured pressure difference, △L is the deformation distance difference of the first elastic extrusion module and the second elasticity The deformation distance of the extrusion module is poor.

Of course, the thickness measuring device provided by the embodiment of the present invention can also detect whether the thickness of the backlight module meets the requirements while measuring the thickness of the backlight module.

Specifically, based on the principle of elastic mechanics, according to the preset thickness range H0, the preset pressure difference range △F0 is obtained, △F0=(F01+F02)-(F10+F20), and the preset pressure difference range △F0 is stored ; When the thickness measuring device measures the backlight module that meets the thickness requirements, the thickness measuring device is in the measurement state, and the pressure sensing module detects the pressure F01 that the first elastic extrusion module of each measuring mechanism 1 bears, and the second elastic extrusion module The pressure F02.

When measuring the thickness of the backlight module to be tested, the pressure sensing module only needs to detect the pressure that the first elastic extrusion module of each measuring mechanism 1 bears and the pressure that the second elastic extrusion module bears. State and measurement state The relevant pressure detected by the pressure sensing module is simply added and subtracted to obtain the measured pressure difference △F, and then the measured pressure difference △F can be judged by judging whether the measured pressure difference △F is within the preset pressure difference range △F0. Whether the thickness of the backlight module meets the requirements.

It should be noted that, in the embodiment of the utility model, it is only necessary to use the pressure sensing unit to sense the pressure on the first elastic extruding module and the pressure on the second elastic extruding module included in each measuring mechanism, and then measure the pressure The pressure data detected by the sensing module can be simply added, subtracted, multiplied, divided, or judged by simple logic operations, and the required thickness data of the backlight module can be obtained. This operation process can be processed through the connection with the pressure sensing module. It can also be realized by an existing logic operation circuit, and does not need to make improvements to the existing technology. For the convenience of display, the processor in the embodiment of the present invention can be connected with a display device, and the measured thickness data of the backlight module can be displayed through the display device.

It can be seen from the above that, in the thickness measuring device provided by the embodiment of the present invention, at least one measuring mechanism 1 includes a first elastic extruding module and a second elastic extruding module to control the extrusion of the first elastic extruding module. The pressing surface and the first driving module 10 of the pressing surface of the second elastic extrusion module are opened and closed, so that when measuring the thickness of the backlight module, the first driving module 10 included in each measuring mechanism 1 controls the first elastic extrusion The extrusion surface of the module and the extrusion surface of the second elastic extrusion module are gradually separated, so that the backlight module is placed between the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module, Then use the first drive module 10 to control the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module to gradually approach and extrude the backlight module; in this process, as long as the pressure sensing module detects The pressure changes of the first elastic extrusion module and the second elastic extrusion module in the initial state and the measurement state, and then use the principle of elastic mechanics to obtain the initial state and measurement of the first elastic extrusion module and the second elastic extrusion module. The deformation distance change amount of the state; and because the deformation distance change amount of the first elastic extrusion module and the second elastic extrusion module in the initial state and the measurement state is because the measurement state backlight module is located at the squeeze of the first elastic extrusion module produced between the pressing surface and the extrusion surface of the second elastic extrusion module, therefore, the amount of change in the deformation distance between the first elastic extrusion module and the second elastic extrusion module in the initial state and the measurement state is substantially equal to that of the backlight module thickness of.

It can be seen that the thickness measurement device provided by the embodiment of the present invention can convert the pressure change generated by the first elastic extrusion module and the second elastic extrusion module due to the backlight module into the deformation distance change amount based on the principle of elastic mechanics , thereby obtaining the thickness of the backlight module, realizing the automatic measurement of the thickness of the backlight module, thereby improving the efficiency of the thickness measurement of the backlight module, reducing the influence of human factors, and improving the accuracy of the thickness measurement of the backlight module.

For example: when using the vernier in the prior art to start measuring the thickness of the backlight module, due to the manual operation of the vernier caliper, the engagement force of the vernier caliper is uncontrollable, making the thickness data measured by the vernier caliper inaccurate; The module 10 drives the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module to open and close, so that the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module are opposite to each other. The extrusion force exerted by the backlight module can be controlled, so that when the plastic frame of the backlight module floats, the first driving module 10 can be used to control the extrusion surface of the first elastic extrusion module and the second elastic extrusion The extrusion surface of the module exerts the maximum extrusion force on the backlight module to ensure that the thickness data can still be accurately measured when the rubber frame of the backlight module is floating.

Another example: in the prior art, if the measurement position of the backlight module encounters internal warping, the thickness data obtained by using a conventional vernier caliper measurement is not the thickness of the measurement position. In the embodiment of the utility model, the extrusion surface of the first elastic extrusion module is opposite to the extrusion surface of the second elastic extrusion module, and the first driving module 10 is used to control the extrusion surface of the first elastic extrusion module and the second extrusion surface of the second elastic extrusion module. The extrusion surface of the elastic extrusion module gradually approaches along a fixed direction, ensuring that the measured thickness data is the actual thickness of the measurement position, so as to determine whether the backlight module has internal warpage by comparing the thickness data of multiple measurement positions The problem.

Exemplarily, the structures of the first elastic extruding module and the second elastic extruding module in the embodiment of the present invention are the same, which will be described respectively below with reference to FIGS. 3 to 5 .

The first elastic extrusion module includes a first frame body 10a and a first compression rod 101a, the first frame body 10a is provided with a first installation hole 100a, and one end of the first compression rod 101a is telescopically arranged in the first installation hole 100a ; The body of the first pressure rod 101a is provided with a first return spring 103a, and the first frame body 10a is provided with a first limiting member 102a for limiting the first return spring 103a. In order to prevent the first return spring 103a from being squeezed into the first installation hole 100a when the measured reaction force of the backlight module is large, the diameter of the first return spring 103a should be larger than the first installation hole 100a. The hole 100a is used to prevent the first return spring 103a from being squeezed into the first installation hole 100a.

Correspondingly, the second elastic extrusion module includes a second frame body 10b and a second pressure rod 101b, the second frame body 10b is provided with a second installation hole, and one end of the second pressure rod 101b is telescopically arranged in the second installation hole Inside: the rod body of the second pressure rod 101b is provided with a second return spring 103b, and the second frame body 10b is provided with a second limiting member 100b for limiting the second return spring 103b. In order to prevent the second return spring 103b from being squeezed into the second installation hole when the measured reaction force of the backlight module is large, the diameter of the second return spring 103b should be larger than the first installation hole 100a to prevent the second return spring 103b from being squeezed into the second installation hole 100b.

Wherein, the extrusion surface of the first compression rod 101a is far away from the end portion of the first compression rod 101a arranged in the first installation hole 100a, and the extrusion surface of the second compression rod 101b is arranged in the second installation hole away from the second compression rod 101b The inner end, the extrusion surface of the first compression rod 101a is opposite to the extrusion surface of the second extrusion rod, and the first frame body 10a and the second frame body 10b are connected by the first driving module 10, so that the first When the driving module 10 controls the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module to gradually move away, the distance between the first frame body 10a and the second frame body 10b gradually increases. The first return force spring 103a and the second return force spring 103b are not subjected to any extrusion, and are in a free state; when the first driving module 10 controls the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module When approaching gradually, and finally stopping due to the existence of the measured backlight module, at this time, because the backlight module exerts a reaction force on the extrusion surface of the first pressing rod 101a and the pressing surface of the second pressing rod 101b, the second pressing rod 101b A pressing rod 101a moves toward the first mounting hole 100a, but due to the existence of the first stopper 102a, when the first pressing rod 101a moves toward the first mounting hole 100a, the first return spring 103a is The first limiting member 102a is limited and presents a compressed state; similarly, the second pressing rod 101b moves toward the direction of the second mounting hole, but due to the existence of the second limiting member 100b, when the second pressing rod 101b moves toward the second During the movement in the direction of the installation hole, the second return spring 103b is limited by the first limiting member 102a and presents a compressed state.

Specifically, as shown in Figures 1 to 5, the first limiting member 102a includes a first limiting sleeve arranged on the first frame body 10a, and the corresponding first pressing rod 101a includes a first connecting rod 110 and a first connecting rod 110. The first pressure head connected to the end of the rod 110, the first return spring 103a is arranged on the rod body of the first connecting rod 110, and the end of the first rod body away from the first pressure head passes through the first limit sleeve and is installed on the first installation. In the hole 100a, the first return spring 103a is located inside the first limiting sleeve, and the first pressure head is located outside the first limiting sleeve. Correspondingly, the second limiting member 100b includes a second limiting sleeve arranged on the second frame body 10b, and the corresponding second pressing rod 101b includes a second connecting rod 120 and a connecting rod connected to the end of the second connecting rod 120 . The second pressure head, the second return force spring 103b is arranged on the rod body of the second connecting rod 120, and the two ends of the second rod body away from the second pressure head pass through the second limit and are sleeved in the second mounting hole, and the second return force The spring 103b is located inside the second limiting sleeve, and the second pressure head is located outside the second limiting sleeve. Wherein, the extrusion surface of the first pressure head is opposite to the extrusion surface of the second pressure head, so as to ensure that the extrusion surface of the first pressure head is parallel to the extrusion surface of the second pressure penetration.

Further, as shown in FIG. 3 , for the pressure sensing module, the pressure sensing module includes multiple sets of pressure sensors corresponding to the measuring mechanism 1 one by one, and each set of pressure sensors includes a sensor for detecting The first pressure sensor 41 for the pressure of the first return spring 103a, and the second pressure sensor 42 for detecting the pressure of the second return spring 103b included in the corresponding measuring mechanism 1 . The first pressure sensor 41 can be located at the orifice of the first mounting hole 100a, and the second pressure sensor 42 can be located at the orifice of the second mounting hole 100b; if a processor is used to process pressure data, the processor and each group of pressure The sensors include a first pressure sensor 41 and a second pressure sensor 42 connected.

As shown in Figures 3 to 5, when the measured backlight module is located between the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module, the first driving module 10 controls the first elastic extrusion module. The extrusion surface of the extrusion module and the extrusion surface of the second elastic extrusion module approach gradually. Due to the existence of the measured backlight module, the extrusion surface of the first elastic extrusion module and the extrusion surface of the second elastic extrusion module The pressure surface cannot be contacted, and the measured backlight module exerts a reaction force on the extrusion surface of the first pressure head and the extrusion surface of the second pressure head, so that the first connecting rod 110 connected with the first pressure head is installed toward the first pressure head. The direction of the hole 100a moves. At this time, the first return spring 103a located in the first limiting sleeve is hindered by the first installation hole 100a, and cannot move in the direction of the first installation hole 100a along with the first connecting rod 110, and is subject to The position limiting of the first spacer sleeve makes the first return spring 103a only rely on its own elasticity to retract; and because the first pressure sensor 41 is arranged at the opening of the first elastic mounting hole, this makes the first return spring 103a When retraction occurs, the first pressure sensor 41 can measure the pressure on the first return spring 103a. Similarly, the second connecting rod 120 connected to the second pressure head moves toward the direction of the second mounting hole, and the second return spring 103b located in the second limiting sleeve is hindered by the second mounting hole and cannot follow the second mounting hole. The connecting rod 120 moves toward the direction of the second mounting hole, and is limited by the second limiting sleeve, so that the second return spring 103b can only retract by its own elasticity; and since the second pressure sensor 42 is located on the second The orifice of the elastic mounting hole enables the second pressure sensor 42 to measure the pressure on the second return spring 103b when the second return spring 103b is retracted.

In order to facilitate the installation of the measuring mechanism 1, as shown in Figure 1, the thickness measuring device provided by the embodiment of the present invention also includes a base 2, and at least one installation shaft is arranged on the base 2, and the corresponding measuring mechanism 1 is sleeved on the installation shaft. A guiding module for guiding, so that the position of the measuring point of the backlight module can be adjusted according to the actual size of the backlight module.

Exemplarily, as shown in Figure 1, the guiding direction of the guiding module should be parallel to the extrusion surface of the first elastic extrusion module, so as to ensure that when the guiding module guides the measuring mechanism 1, no matter how the position of the measuring module moves , the extrusion surface of the first elastic extrusion module is opposite to and parallel to the extrusion surface of the second elastic extrusion module.

Specifically, as shown in Figure 1 and Figure 2, the guide module in the embodiment of the utility model includes a guide groove that is sleeved on the installation shaft and can rotate around the installation shaft, and a connecting rod is provided on the first elastic extrusion module to connect The length direction of the rod is the same as the guiding direction of the guide groove, and the connecting rod is located in the guide groove. During specific implementation, by controlling the connecting rod to slide along the guiding direction of the guide groove, the connecting rod drives the first elastic extrusion module to move along the guiding direction of the guide groove, and then drives the second elastic extrusion module 10 through the first driving module The module moves along the guiding direction of the guiding groove, so as to achieve the purpose of guiding the measuring mechanism 1 .

In addition, in the embodiment of the utility model, the guide groove can rotate around the installation shaft, which makes it possible to change the measurement position of the backlight module in a relatively large range after the guide groove rotates around the installation shaft, which can reduce the number of measuring mechanisms 1 needed. .

In order to ensure the accuracy of the thickness measurement results of the backlight module, as shown in FIG. 1 and FIG. 6 , the positioning mechanism 6 on the base 2 in the embodiment of the present invention is used for positioning the backlight module. When the first elastic extruding module and the second elastic extruding module of the measuring mechanism 1 exert pressure on the backlight module, the backlight module will not be displaced due to excessive pressure, thereby ensuring the accuracy of the measurement results, so that It can avoid the problem of inconsistency in batch measurement positions caused by completely relying on naked eye positioning when using a vernier caliper to manually measure the backlight module.

Specifically, as shown in Fig. 1, Fig. 2 and Fig. 6, the positioning mechanism 6 in the embodiment of the utility model includes at least one first telescopic frame 61 and at least one second telescopic frame 62; at least one first telescopic frame 61 and at least one A second telescopic frame 62 is located on the base 2, and the angle formed between the telescopic direction of each second telescopic frame 62 and the straight line where the telescopic direction of each second telescopic frame 62 is not equal to 0 and 180 °, each first telescopic frame The straight line where the telescopic direction of the frame 61 is located and the straight line where the telescopic direction of each second telescopic frame 62 is parallel to the light-emitting surface of the backlight module measured in the measurement state; The first direction positive retaining wall 311 and the first direction negative retaining wall 312 that are positioned in the telescopic direction of the first telescopic frame 61; The second direction positive blocking wall 321 and the second direction negative blocking wall 322 are positioned for the telescopic direction.

Since the straight line where the telescopic direction of each first telescopic frame 61 is located and the straight line where the telescopic direction of each second telescopic frame 62 is located are parallel to the light emitting surface of the backlight module measured in the measurement state, so that in the measurement state, each first telescopic frame 61 passes When the expansion and contraction control the positions of the positive blocking wall 311 in the first direction and the negative blocking wall 312 in the first direction, it is ensured that the moving directions of the positive blocking wall 311 in the first direction and the negative blocking wall 312 in the first direction are always consistent with the measurement state. The light-emitting surfaces of the backlight module are parallel; each second telescopic frame 62 controls the positions of the positive blocking wall 321 in the second direction and the negative blocking wall 322 in the second direction through telescopic action, so as to ensure the positive blocking wall 321 in the second direction and the second negative blocking wall 322 in the second direction. The moving direction of the negative direction blocking wall 322 is always parallel to the light-emitting surface of the backlight module in the measurement state; thus, it can be ensured that the first telescopic frame 61 controls the positive blocking wall 311 in the first direction and the negative blocking wall 312 in the first direction. The positioning of the backlight module in the telescopic direction of the first telescopic frame 61, the second telescopic frame 62 controls the position of the positive blocking wall 321 in the second direction and the negative blocking wall 322 in the second direction to the backlight module in the telescopic direction of the second telescopic frame 62 position.

Considering that the backlight module is generally transported by transport equipment, as shown in Figure 6, the thickness measurement device provided by the embodiment of the present invention also includes a transport unit 7, and at least one measurement mechanism 1 is located on the same side of the transport unit 7; as for the measurement transport The quantity of the measuring mechanism 1 on the side of the unit 7 is determined according to the measuring position of the side of the backlight module close to the transmission unit 7 .

The conveying unit 7 has at least one slit 70 extending along the conveying direction, and at least one slit 70 corresponds to at least one second telescopic frame 62; when the thickness measuring device is in the measuring state, the first direction is located at the conveying wall 311. On one side of the unit 7, the negative blocking wall 312 in the first direction is located on the other side of the transmission unit 7; the positive blocking wall 321 in the second direction and the negative blocking wall 322 in the second direction corresponding to each second telescopic frame 62 Located in the corresponding gap 70 , the straight line where the telescopic direction of each second telescopic frame 62 is located is parallel to the straight line where the conveying direction is located.

In order to cooperate with the use of the transmission unit 7, as shown in Figure 1, the positioning mechanism 6 in the embodiment of the utility model also includes a lifting frame (not shown in Figure 1), at least one first telescopic frame 61 and at least one second telescopic frame 62 It is installed on the base 2 by lifting and lowering; when the backlight module is transported to the measurement area, the first telescopic frame 61 and the second telescopic frame 62 use their respective telescopic functions to adjust the positioning size for positioning the backlight module, and then use the lifting The frame controls at least one first telescopic frame 61 and at least one second telescopic frame 62 to rise, so that the first direction on the first telescopic frame 61 is located on the side of the transmission unit 7 toward the positive blocking wall 311, and the first direction is negative toward the blocking wall 311. The wall 312 is located on the other side of the transfer unit 7 , and the second direction positive blocking wall 321 and the second direction negative blocking wall 322 on the at least one second telescopic frame 62 are located in the corresponding gap 70 .

Exemplarily, as shown in Figure 1 and Figure 6, when there are two measuring mechanisms 1, one of the measuring mechanisms 1 is defined as the first measuring mechanism 11, and the second elastic extrusion module included in the first measuring mechanism 11 A first connecting rod 110 is connected, another measuring mechanism 1 is defined as a second measuring mechanism 12 , and the second elastic extruding module included in the second measuring mechanism 12 is connected with a second connecting rod 120 .

The base 2 is provided with two installation shafts, and one of the installation shafts is defined as the first installation shaft 21. The first installation shaft 21 is provided with a first guide groove 210 that can rotate around the first installation shaft 21. The first connection The rod 110 is located in the first guide groove 210; the other two installation shafts are defined as the second installation shaft 22, the second installation shaft 22 is sleeved with a second guide groove 220, and the second connecting rod 120 is located in the second guide groove 220 Inside.

When the transmission unit 7 includes a first conveyor belt 71 and a second conveyor belt 72, there is a gap 70 between the first conveyor belt 71 and the second conveyor belt 72, and the fixing mechanism includes a first telescopic frame 61 and a second telescopic frame 62, the first The first direction positive blocking wall 311 provided on the telescopic frame 61 is located on the side of the first conveyor belt 71 away from the gap 70, the first direction negative blocking wall 312 is located on the side of the second conveyor belt 72 away from the gap 70, and the second telescopic The second direction positive retaining wall 321 provided on the frame 62 is located in the gap 70, and the second direction negative retaining wall 322 is located in the gap 70; wherein, the straight line where the telescopic direction of the first telescopic frame 61 is located and the line of the second telescopic frame The straight line where the telescopic direction is located is 90°.

As shown in Figure 6, when the backlight module is transported to the measurement area by the transport unit 7, according to the measured size of the backlight module, the first telescopic frame 61 is used to adjust the first direction forward retaining wall 311 and the first direction For the distance between the negative retaining walls 312, use the second telescopic frame 62 to adjust the distance between the positive retaining wall 321 in the second direction and the negative retaining wall 322 in the second direction, and then control the lifting frame to rise so that the first direction The positive blocking wall 311 and the negative blocking wall 312 in the first direction are located on both sides of the transmission unit 7, the positive blocking wall 321 in the second direction and the negative blocking wall 322 in the second direction are located in the gap 70, so as to utilize the positive blocking wall 322 in the first direction. The positioning of the backlight module to be measured is realized by facing the blocking wall 311 , the negative blocking wall 312 in the first direction, the positive blocking wall 321 in the second direction and the negative blocking wall 322 in the second direction.

When measuring the thickness of the backlight module, as shown in Figure 1, Figure 2 and Figure 6, use the first measuring mechanism 11 to measure the first measurement position a of the backlight module, and use the second measuring mechanism 12 to measure the second position a of the backlight module. The measurement position b is measured, and then the first guide groove 210 is controlled to rotate around the first installation shaft 21, and the first guide groove 210 is used to control the rotation of the first measurement mechanism 11, so that the first measurement mechanism 11 measures the third measurement of the backlight module. The position c is to control the rotation of the second guide groove 220 around the second installation shaft 22 so as to use the second guide groove 220 to rotate the second measuring mechanism 12 so that the second measuring mechanism 12 measures the fourth measuring position d of the backlight module.

It is worth noting that, as shown in FIG. 1 , when the measurement mechanism 1 measures the thickness of a measurement position of the backlight module, the first connecting rod 110 connected to the first elastic extrusion module included in the measurement mechanism 1 can also be used. Make fine adjustments to this measurement position.

It should be noted that, as shown in Figure 1, the first telescopic frame 61 and the second telescopic frame 62 in the embodiment of the present invention both include a first bracket and a second bracket, and a control frame is provided between the first bracket and the second bracket. The second drive module 60 of the opening and closing of the first bracket and the second bracket; wherein, the driving direction of the second drive module 60 included in the first telescopic frame 61 is the same as the telescopic direction of the first telescopic frame 61; the second telescopic frame 62 The driving direction of the included second driving module 60 is the same as the telescopic direction of the second telescopic frame 62 .

In addition, whether it is the first driving module 10 or the second driving module 60, the driving direction can be one-way driving or two-way driving, and the specific implementation forms are various, such as: pneumatic driving mechanism, hydraulic driving mechanism or electric driving mechanism. Drive mechanism.

As shown in Figure 6, the utility model embodiment also provides a kind of backlight test system, and this backlight test system comprises lighting device 8, scanning device 5 and the thickness measuring device of above-mentioned embodiment; Scanning device 5 is generally CCD camera or other high-definition Camera.

During specific implementation, after the positioning mechanism included in the thickness measuring device positions the measured backlight module, the lighting device 8 automatically absorbs the gold finger of the light source of the measured backlight module to realize the connection between the lighting device 8 and the measured backlight module. Electrically connected, at this time the lighting device 8 lights up the measured backlight module, and the scanning device 5 is used to scan the thickness measuring device to realize backlight inspection.

Compared with the prior art, the beneficial effect of the backlight testing system provided by the embodiment of the present invention is the same as that of the thickness measuring device provided by the above embodiment, and will not be repeated here.

In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in an appropriate manner.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. a kind of measurer for thickness, which is characterized in that including at least one measuring mechanism, each measuring mechanism include with The first elasticity that pressure sensitive module is separately connected squeezes module and the second elasticity squeezes module, and first elasticity squeezes module Compressive plane and it is described second elasticity squeeze module compressive plane it is opposite, it is described first elasticity squeeze module and it is described second elasticity The compressive plane for controlling the first elasticity extruding module and the second elastic extruding for squeezing module are equipped between extruding module First drive module of face folding.

2. measurer for thickness according to claim 1, which is characterized in that first elasticity squeezes module and the second bullet Property to squeeze module include frame body and compression bar, the frame body offers mounting hole, and one end of the compression bar is telescopic to be located at institute It states in mounting hole；The body of rod of the compression bar is equipped with return spring, and the frame body is equipped with for being carried out to the return spring The locating part of limit；

The compressive plane and the pressure included by the second elasticity extruding module that first elasticity squeezes the compression bar included by module The compressive plane of bar is opposite, and first elasticity squeezes included by frame body and the second elasticity extruding module included by module It is connected by first drive module between frame body；

The pressure sensitive module includes and the measuring mechanism multigroup pressure inductor correspondingly, every group of pressure inductor Include squeezing first of the return spring pressure included by module for detecting the first elasticity described in the corresponding measuring mechanism Pressure inductor, and for detecting the return spring included by the second elasticity extruding module described in the corresponding measuring mechanism The second pressure inductor of pressure；

First pressure inductor and second pressure inductor included by every group of pressure inductor are connect with processor respectively.

3. measurer for thickness according to claim 2, which is characterized in that the compression bar include connecting rod and with it is described The pressure head of the end connection of connecting rod, the return spring are located on the body of rod of connecting rod；The locating part is described including being located at The aperture of stop collar on frame body, the mounting hole is located in the stop collar, and the body of rod passes through institute away from one end of pressure head It states limit to be set in the mounting hole, the return spring is located in the stop collar, and the pressure head is located at the stop collar Outside；

First elasticity squeezes the compressive plane of the pressure head in module included by compression bar and second elasticity is squeezed and pressed in module The extruding plane of pressure head included by bar is opposite；

The first pressure inductor is located at the aperture that first elasticity squeezes the mounting hole that frame body is opened up in module, described Second pressure inductor is located at the aperture that second elasticity squeezes the mounting hole that frame body is opened up in module.

4. measurer for thickness according to claim 2, which is characterized in that the diameter of the return spring is more than the peace Fill the aperture in hole.

5. according to Claims 1 to 4 any one of them measurer for thickness, which is characterized in that the measurer for thickness is also Including pedestal, and set the detent mechanism for being used to position backlight module on the base；It is additionally provided on the pedestal At least one installation axle, at least one installation axle is corresponded at least one measuring mechanism, in the installation axle It is arranged with the oriented module being oriented to the correspondence measuring mechanism, the guide direction of the oriented module and first bullet Property squeeze module compressive plane it is parallel.

6. measurer for thickness according to claim 5, which is characterized in that the oriented module includes being set in the peace The guide groove that can be rotated on axis and around the installation axle is filled, first elasticity squeezes module and is equipped with connecting rod, the company The length direction of extension bar is identical as the guide direction of the guide groove, and the connecting rod is located in the guide groove.

7. measurer for thickness according to claim 5, which is characterized in that the detent mechanism includes at least one first Expansion bracket and at least one second expansion bracket；At least one first expansion bracket and at least one described second flexible is erected at On the pedestal, the telescopic direction of each second expansion bracket and straight line where the telescopic direction of each first expansion bracket Formed angle is not equal to 0 and 180 °, and straight line where the telescopic direction of each first expansion bracket is stretched with each described second Straight line where the telescopic direction of contracting frame is parallel with the light-emitting surface of the backlight module measured by measuring state；

At least one first expansion bracket is equipped with and is positioned for the telescopic direction to backlight module in the first expansion bracket First direction forward direction barricade and first direction negative sense barricade；

At least one second expansion bracket is equipped with and is positioned for the telescopic direction to backlight module in the second expansion bracket Second direction forward direction barricade and second direction negative sense barricade.

8. measurer for thickness according to claim 7, which is characterized in that the measurer for thickness further includes that transmission is single Member, at least one measuring mechanism are located at the same side of the transmission unit；

The detent mechanism further includes crane, and at least one first expansion bracket and at least one second expansion bracket are logical The lifting is crossed to be erected on the pedestal；

The transmission unit has at least one gap extended along the conveying direction；At least one gap with it is at least one Second expansion bracket corresponds；The measurer for thickness is in measuring state, and the first direction forward direction barricade is located at The side of the transmission unit, the first direction negative sense barricade are located at the other side of the transmission unit；Each described second Second direction forward direction barricade and second direction negative sense barricade corresponding to expansion bracket are located in the corresponding gap, and each described the Straight line where the telescopic direction of two expansion brackets and straight line parallel where the direction of transfer.

9. measurer for thickness according to claim 7, which is characterized in that first expansion bracket and the second expansion bracket are equal It is equipped with including first support and second support, between the first support and the second support and controls the first support and institute State the second drive module of second support folding.

10. a kind of backlight tests system, which is characterized in that including ignition device, scanning means and claim 1~9 are any Measurer for thickness described in.