KR20210132037A - Edge type backlight module, liquid crystal display device, and backlight plate optical verification method - Google Patents

Abstract

In the edge type backlight module and liquid crystal display device, and the backlight plate optical verification method, the backlight module includes a backlight plate main body, and the backlight plate main body is a first substrate used to support a light guide plate waiting for verification ( 1) and a second substrate 2 detachably connected to the first substrate 1, wherein a light source moving module is installed on the second substrate 2, and a light source 4 is mounted on the light source moving module . By using the light source movement module to move the light source 4 and move it in a direction perpendicular to it, the distance between the light source 4 and the light guide plate is adjusted, and the light entry side of the light guide plate is separated from the light source. It avoids optical index failure caused by distance problems and lowers the rate of misjudgment of the light guide plate. In this process, there is no need to touch the light guide plate and move it. Therefore, loss is reduced and cost is reduced, and in addition, the main body of the backlight plate is not composed of an integrated structure, so it is convenient for transportation.

Description

Edge type backlight module, liquid crystal display device, and backlight plate optical verification method

This disclosure belongs to the field of light guide plate optical verification, and specifically, an edge type backlight module that can control the light bar distance and verifies the light guide plate optics, and a liquid crystal display device and edge type using the backlight module It relates to a backlight plate optical verification method using a backlight module.

With the rapid development of the liquid crystal display industry in China, it has led to the development of numerous liquid crystal backlight module component manufacturers. The backlight module is also divided into edge type backlight and direct backlight. What this disclosure aims for is an edge-type backlight backlight module.

The main body member of the backlight module of the edge type backlight is a light guide plate. After the light guide plate is printed with ink or dotted with a laser, optical verification must be performed. For optical verification, the light guide plate after printing with ink or dotting with a laser is placed on a simple backlight module. , the optical verification must be carried out using the BM-7. However, in the course of the research, the inventor said that the position fixing locking groove of the light guide plate and the position fixing pillar of the backlight module are usually configured with a loose fit (it cannot be designed with a forced fit for convenience of assembly), so that the light guide plate is not a backlight. When placed on the module, the light entry side cannot be exactly close to the light bar of the backlight module, and it is not only at a certain distance, but also when the positioning pole becomes loose after long-term use, the light entry side is still close to the light bar exactly. found that it could not be done. However, through many simulation experiments and actual surveying, the inventor found that the distance between the light entry side of the light bar and light guide plate is very important. BM-7 optical unit) was found to fall off. This is fatal for the light guide plate, and because of the distance of the light bar, the product that was originally approved may appear to be unsuccessful as a result of the inspection. The selling price of each light guide plate varies from 50 to 1500 yuan, which is a huge loss. In addition, experienced personnel intend to reduce the distance between the light bar and the light entry side of the light guide plate by configuring the light guide plate to slide in the direction of the light bar when validating the light guide plate, in this case: The optical measurement value of the light guide plate can be increased, but the light guide plate is inevitably touched and moved, and the light guide plate is soiled and damaged and damaged by scratches. Or the larger size of the light guide plate is fundamentally difficult to move. All of the above problems cause losses to the company.

The present disclosure was created to solve the shortcomings of the prior art, and its purpose is to adjust the light bar distance and verify the light guide plate optics, and an edge type backlight module and a liquid crystal display using the backlight module An object of the present invention is to provide a backlight plate optical verification method using a device and an edge-type backlight module.

The technical solution used by this disclosure is as follows.

An edge type backlight module is provided, wherein the backlight module includes a backlight plate main body, wherein the backlight plate main body is separable from a first substrate and a first substrate used to support a light guide plate awaiting verification It includes a second substrate for connecting, a light source moving module is installed on the second substrate, and a light source is mounted on the light source moving module.

The above technical solution uses the light source moving module to move the light source so that it moves in a direction perpendicular to it, thereby adjusting the distance between the light source and the light guide plate and eliminating the need to touch and move the light guide plate. Damage due to dirt and scratches do not occur, which reduces losses and reduces costs. In addition, the main body of the backlight plate is not composed of an integrated structure, so it is convenient for transportation.

Furthermore, the light source moving module is configured to move the L-shaped shifter lever and the L-shaped shift lever, which are installed symmetrically for the light source support, and are configured to move the light source support to move up and down. Includes a rotating device used to propel motion.

Further, the light source support includes a transverse support rod and two longitudinal guide rods perpendicular to the transverse support rod, the light source is mounted on the transverse support rod, the lower side of the transverse support rod is L-shaped Two U-shaped guide members used to match the shift lever and each other are symmetrically installed, and long rod-shaped through-holes are opened in both walls of each guide member along the transverse direction.

Furthermore, a U-shaped positioning member used to limit the movement position of the longitudinal guide rod is installed on the second substrate at a position corresponding to the longitudinal guide rod, and the vertical guide rod is a U-shaped positioning member. It is located inside a cavity formed between the member and the second substrate.

The above technical solution uses a U-shaped positioning member to limit the movement direction and position of the light source support, so that the light source support moves along the direction perpendicular thereto, and furthermore, by configuring the light source to move, the light source support is perpendicular to the light source support. By controlling the distance between the light source and the light entry side of the light guide plate, it is possible to significantly lower the rate of misjudgment, filth, and scratch damage of the light guide plate. When the guide plate is detected, the distance between the light entry side and the light bar is not appropriate, which lowers the optical measurement value of the light guide plate and causes an erroneous judgment of the light guide plate finished product. By configuring to move and moving along a direction perpendicular to it, the distance between the light source and the light guide plate light entry side is adjusted, and further, the pass/failure error rate of the light guide plate is greatly reduced.

Furthermore, a rotation shaft is installed on the second substrate at a position corresponding to the L-type shift lever, and a connection point between a horizontal section and a vertical section of the L-type shift lever is installed on the rotation shaft of the second substrate.

The above technical solution configures the L-type shift lever to conveniently perform a fan-shaped motion using the rotation shaft, and ensures that the L-type shift lever can rotate around the rotation shaft.

Furthermore, one end of the horizontal section of the L-shaped shift lever is provided with a projection matching the U-shaped guide member, and the projection of the horizontal section of the L-shaped shift lever is located inside the through hole of the U-shaped guide member.

The above technical solution uses a projection to match the U-shaped guide member, and when the L-shaped shift lever performs a fan-shaped movement, by supporting or lowering the light source support through the matching of the projection and the guide member, the distance between the light source and the light guide plate achieve the purpose of controlling

Further, the rotating device includes a rotating plate and a rotating button, and both sides of the rotating plate are respectively connected to one end of the vertical section of the L-shaped shift lever through a connecting rod;

The rotation button is mounted on the back side of the second substrate and is connected to the rotation plate through a connecting shaft.

The above technical solution is to rotate by rotating using the rotation button of the second substrate distribution, and to rotate the rotating plate to move, and the rotating plate to move the L-shaped shift lever through the connecting rod to perform sectoral rotation. It is convenient to lower the support by supporting or moving it, and achieves the purpose of adjusting the distance between the light source and the light guide plate by moving and moving the light source through the light source support.

Furthermore, it further includes a light blocking module, wherein the light blocking module includes a cover plate installed on the outside of the light source moving module and a light blocking plate installed on the cover plate, both ends of the cover plate are fixedly connected to the second substrate, and the Both sides of the light shielding plate are sandwiched through the edge fixing bars and fixed to the cover plate.

The above technical solution prevents the light emitted by the light source from overflowing by using a light shielding plate, and prevents the light source moving module from being separated from the second substrate by using a cover plate.

The liquid crystal display device includes the edge type backlight module and a light guide plate, and the light guide plate is fixed to the backlight plate main body and installed to face the light source.

In the optical verification method of the light guide plate, the method is implemented based on the edge type backlight module, the method comprising:

fixing and mounting the light guide plate waiting for verification to the first substrate;

Rotating the rotation button clockwise and rotating the rotation button to configure the rotation plate to move;

configuring the rotating plate to move the two L-shaped shift levers through the two connecting rods to surround the rotating shaft and to perform a fan-shaped motion;

A step of supporting the light source support while the projections of the two L-shaped shift levers each perform a fan-shaped swing;

The light source support is configured to move the light source so as to move in phase, so that the light source is close to the light entry side of the light guide plate;

obtaining an optical measurement value of the light guide plate by performing optical verification on the light guide plate using an optical measuring instrument of the backlight module; includes

This disclosure achieves the following technical effects through the above technical solution.

(1) In this disclosure, the light guide plate is configured to move using a light source moving module and moved in a direction perpendicular to it, thereby adjusting the distance between the light source and the light guide plate and avoiding touching and moving the light guide plate. The situation of being damaged by dirt and scratching is not generated, the loss is reduced, and the cost is reduced;

(2) the main body of the present disclosure is not a one-piece structure, but is composed of two substrates that are detachably connected, and is convenient for transportation; In addition, since these two substrates use an aluminum substrate, it is convenient for heat dissipation, and bending and deformation of the plate do not occur;

(3) In this disclosure, by rotating using the rotation button of the second substrate distribution, the rotation plate is configured to move and rotated, and the rotation plate is configured to move an L-shaped shifter lever through a connecting rod to move the L-shaped shifter lever. By proceeding with rotation, it is convenient to lower the light source support by supporting or moving it, and by moving and moving the light source through the light source support to achieve the purpose of adjusting the distance between the light source and the light guide plate, the light guide plate It is possible to significantly lower the rate of erroneous judgment, filth, and scratch damage and reduce costs.

The specification drawings, which form a part of this disclosure, are used to provide a further understanding of the disclosure, and the illustrative embodiments of the disclosure and its description are used to interpret the disclosure and do not unduly limit the disclosure.
1 is an overall structural explanatory diagram of an edge-type backlight module according to Embodiment 1;
Fig. 2 is a structural explanatory diagram in the case where the cover plate is not configured in the edge-type backlight module according to the first embodiment;
3 is a local enlarged explanatory view of a light source and a light source support according to the first embodiment;
4 is a structural explanatory view of the light source support according to the first embodiment;
5 is a structural explanatory diagram of a light source moving module according to Embodiment 1;
6 is a structural explanatory diagram of the light source moving module according to the first embodiment;
7 is a local enlarged explanatory view of the light blocking module according to the first embodiment;
8 is a structural explanatory diagram of the rotary button according to the first embodiment.

Hereinafter, the present disclosure will be further described in conjunction with the drawings and the present embodiment.

Above all, the following detailed description is all illustrative and is intended to be a further description of the present disclosure. Unless otherwise indicated, all technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

Above all, the terminology used herein is for the purpose of describing specific embodiments only, and not for the purpose of limiting exemplary embodiments according to the present application. For example, unless otherwise indicated in a sentence, terms used herein are intended to include the plural form in the singular form, and when the terms "includes" and/or "inclusive" are used in this specification, It is also to be understood that he refers to the presence of a feature, step, operation, element, assembly, and/or combination thereof.

Example 1

Embodiment 1 provides an edge-type backlight module, and the edge-type backlight module includes a backlight plate main body, a light source, a light source moving module, and a light blocking module.

As shown in FIG. 1, the backlight plate main body includes a first substrate 1 and a second substrate 2 used to fix and support a light guide plate awaiting verification, and the first substrate ( 1) and the second substrate 2 are detachably connected to form an accommodation space for other elements for installing a backlight module, for example, a light source, a light source moving module, and a light blocking module; The first substrate 1 and the second substrate 2 connected in a separable manner do not have an integral structure and can be separated during transportation, which is convenient for transportation.

2 and 3, the light source moving module is installed on the front side of the second substrate 2, and the light source moving module includes a light source support 5, a rotating plate 6, a connecting rod 7, It includes an L-shaped shift lever (8), a rotating shaft (10) and a rotating button (14), and the light source (4) is installed on the light source support (5).

As shown in FIG. 4 , the light source support 5 includes a transverse supporting rod 51 and two longitudinal guide rods 52 perpendicular to the transverse supporting rod, and the light source 4 is transversely installed on the directional support rod 51 and used to support the light source 4; Two U-shaped guide members 53 installed in the transverse direction are further symmetrically installed below the transverse support rod 51 , and the top side of the two guide members 53 has a transverse support rod 51 . ) and fixedly connected to the lower side, the two guide members 53 are positioned between the two longitudinal supports 52 , and both side walls of each guide member 53 have a long rod-shaped through in the transverse direction. A hole 54 is opened and used to transmit motion by matching the protrusion of the L-shaped shift lever; L-shaped shift levers 8 are installed inside the two connectors 53, respectively.

As shown in FIG. 5 , the rotation shaft 10 is installed at a position corresponding to the L-type shift lever 8 on the second substrate, and is perpendicular to the horizontal section 81 of the L-type shift lever 8 . The connection point of the section 82 is installed on the rotation shaft 10 of the second substrate so that the L-shaped shift lever 8 surrounds the rotation shaft 10 and performs a sectoral motion, and the L-shaped shift lever 8 The horizontal section 81 of is located inside the U-shaped connector 53, and the horizontal section 81 of the L-shaped shift lever 8 has two protrusions 83 symmetrically installed at one end away from the vertical section, The protrusions 83 are located inside the through-holes 54 of both sides of the U-shaped connector 53 and are configured to slide in the through-holes 54, so that the L-shaped shift lever surrounds the rotating shaft 10 and has a sectoral shape. When the movement proceeds, the projection 83 is used to support or lower the light source support 5, and the light source 4 moves in a direction perpendicular to the light source support 5, and the light source and By adjusting the distance on the light entry side of the light guide plate assembly, it is possible to significantly lower the rate of misjudgment, filth, and scratch damage of the light guide plate and reduce the cost.

As shown in FIG. 6 , a through hole is opened on both sides of the rotating plate 6 , and each through hole of the rotating plate is a vertical section 82 of the L-shaped shift lever 8 through a connecting rod 8 , respectively. It is used to move and rotate the L-shaped shift lever through the connecting rod by connecting it with one end of the horizontal end away from it.

As shown in FIG. 7 , the light blocking module includes a cover plate 13 and a light blocking plate 11 , and the cover plate 13 is installed outside the light source moving module and fixed to the second substrate 2 . By attaching it to the light source, it is not only used to prevent the light source moving module from leaving the second substrate 2, the light beam from overflowing at the light source point, and from affecting the detection of the light guide plate, but also the light shielding plate 11 also used to support; The light-shielding plate 11 is installed on the cover plate 13, and both sides of the light-shielding plate 11 are sandwiched by edge fixings 13 and fixed to the cover plate 13, so that the light-shielding plate is fixed to the cover plate and easily removed. This prevents the light emitted by the light source from overflowing.

As shown in FIG. 7 , the rotation button 14 is mounted on the back side of the second substrate 2 , and the rotation button 14 is connected to the rotation plate through a connecting shaft, and the rotation button 14 When this rotates, the rotating plate 6 rotates, and the L-shaped shift lever is configured to move with the connecting rod 7 to surround the rotating shaft 10 to perform a sectoral motion, and the protrusion 83 of the L-shaped shift lever supports or lowers the light source support 5 so that the light source 4 moves in a direction perpendicular to the light source support 5, and adjusts the distance between the light source and the first substrate and the second substrate so that the light source is light Make sure it is close to the light entry side of the guide plate.

When using the edge type backlight module submitted in this embodiment, the light guide plate waiting for verification is fixed to the first board by a plurality of positioning pins 3 and mounted, and the rotation button 14 is rotated clockwise. to rotate, and to move the rotating plate 6 to rotate, and to move the L-shaped shift lever through the connecting rod 7 to surround the rotating shaft 10 and perform a sectoral motion, and the L-shaped shift lever The projections 83 of the light source support 5 are supported so that the light source 4 moves in phase along the direction perpendicular to the light source support 5, and the light source moves to the light entry side of the light guide plate. keep it close

The edge-type backlight module submitted in this embodiment is configured to move and rotate the rotating plate 6 by rotating the rotating button 14 on the rear side of the second substrate, and the rotating plate 6 and the L-shaped shift lever 8 ) are connected to each other through a connecting rod 7, and when the rotating plate 6 rotates, the L-shaped shift lever 8 also performs a sector-shaped motion, and the projection of the L-shaped shift lever 8 performs a sector-shaped swing. And configured to move the light source support 5 to proceed upward or downward movement, and finally, the light source 4 to proceed upward or downward movement, in this embodiment the light source through the rotational movement of the rotary button It is converted to a linear motion, and the light source is adjusted so that it is close to the light entry side of the light guide plate.

Above all, the first substrate 1 uses an aluminum substrate to support and fix the light guide plate awaiting verification, and the second substrate 2 also uses an aluminum substrate to support the light guide plate. This also achieves good heat dissipation, and since the light source 4 generates a large amount of heat when emitting light, if it does not dissipate heat, it causes bending and deformation of the plate material. Therefore, in this embodiment, the first substrate 1 ) and the second substrate can achieve good heat dissipation using an aluminum substrate, respectively.

The first substrate 1 and the second substrate 2 can be connected together through a bolt, and when transport is required, the first substrate 1 and the second substrate 2 can be separated by loosening the bolt for transportation. convenient to do

Above all, in this embodiment, the light source 4 uses an LED light bar as a light source for the entire backlight module, and the light bar is fixed to the light source support 5 and installed, and the L-shaped shift lever 8 ) surrounds the rotational shaft 10 and needs to perform a sectoral motion, the protrusion 83 of the L-shaped shift lever 8 supports or lowers the light source support 5 so that the light bar is attached to the light source support 5. It can move in a vertical direction, and by adjusting the distance of the light entry side of the light bar and light guide plate assembly, the rate of misjudgment of whether the light guide plate is passed or not, the rate of damage due to dirt and scratches is greatly reduced, thereby reducing loss and reducing cost. can save

As shown in Figure 5, the second substrate submitted in this embodiment has a longitudinal guide rod 52 and a position corresponding to each other of the light source support 5 to limit the movement position of the longitudinal guide rod (52) By installing the U-shaped positioning member (9) used for this, it is used to limit the position where the light source supporter (5) moves up and down. In this embodiment, the U-shaped positioning member 9 is mounted to the first aluminum substrate 3 through a screw, and there is one piece between the U-shaped positioning member 9 and the second aluminum substrate 3 . A cavity is formed, and the longitudinal guide rod 52 of the light source support 5 is positioned in the cavity, and the longitudinal guide rod 52 can move along a direction defined by the U-shaped positioning member 9 . .

Example 2

This embodiment provides a liquid crystal display device, the liquid crystal display device including a light guide plate and the edge type backlight module, the light guide plate is fixed to the first substrate (1) to face the light source (4) install

Here, the specific structure of the edge type backlight module according to the present embodiment refers to the related description of the previous embodiment, and will not be repeated here.

Above all, in this embodiment, the light guide plate is fixedly mounted to the first substrate through a plurality of positioning pins 3 , and in this embodiment, the light guide plate is fixed using a plurality of positioning pins 3 . It is fixed to the first substrate, and the locking grooves of the positioning pin 1 and the light guide plate are matched to each other to ensure that the light guide plate does not move from the first substrate.

Example 3

This embodiment provides a light guide plate optical verification method, the method is implemented based on the edge type backlight module, the method includes:

S101 step of fixing and mounting the light guide plate waiting for verification to the first substrate through a plurality of positioning pins;

S102 step of rotating the rotary button clockwise and configured to rotate the rotary button to move the rotary plate (6);

S103 step of configuring the rotating plate to move the two L-shaped shift levers 8 through the two connecting rods 7 to surround the rotating shaft 10 and to perform a sectoral motion;

S104 step of supporting the light source support 5 while the projections 83 of the two L-shaped shift levers each perform a fan-shaped swing;

S105 step in which the light source support 5 is configured to move the light source 4 so as to move in phase along the direction perpendicular to the light source support 5 so that the light source is close to the light entry side of the light guide plate;

Step S106 to obtain an optical measurement value of the light guide plate by performing optical verification on the light guide plate using the optical measuring instrument BM-7 of the backlight module; includes

In detail, the optical verification performed on the light guide plate in step 106 is implemented using the following method.

The light source is close to the light guide plate, and then covers the composite film, mainly including a composite film of some optical film such as a prism film, a diffusion film and the like;

The observation lens of the backlight module optical surveying instrument BM-7 is attached to the position after the composite film is covered, and the optical data observed by the BM-7 instrument is analyzed and recorded, and there is a clear appearance defect on the light guide plate (e.g., In a situation where there is no damage due to scratches, soiled damage), if some optical data meets the standard, it is judged as a passing product, whereas if it does not reach the standard, it is judged as a defective product.

The light guide plate optical verification method submitted by this embodiment is configured to move and rotate the rotating plate 6 by rotating the rotating button 14 on the rear side of the second substrate, and rotating the rotating plate 6 and the L-shaped shift lever ( 8) are connected to each other through a connecting rod 7, and when the rotating plate 6 rotates, the L-shaped shift lever 8 also performs a sector-shaped motion, and the projection of the L-shaped shift lever 8 performs a sector-shaped swing. By doing so, the light source support 5 is configured to move and moves upward or downward, and finally, the light source 4 moves upward or downward. After switching to motion and adjusting the light source to get closer to the light entry side of the light guide plate, the backlight module optical survey system BM-7 performs optical verification on the light guide plate to ensure the accuracy of the optical measurement value of the light guide plate. to provide.

The backlight module of the present disclosure can be applied to the purpose of detecting whether the light guide plate has passed the optical index when the manufacturer of the light guide plate produces a light guide plate dotted with laser or a light guide plate printed with ink. have.

Although the above description has described a specific implementation method of the present disclosure in combination with the drawings, the scope of protection of the present disclosure is not limited, and those skilled in the art to which this disclosure belongs are the basis of the technical solution according to the present disclosure It should be understood that various modifications or variations that can be made immediately without the need for creative labor on the website should still fall within the protection scope of this disclosure.

Claims (10)

In the edge type backlight module,
a backlight plate main body, wherein the backlight plate main body includes a first substrate used to support a light guide plate awaiting verification and a second substrate detachably connected to the first substrate; Edge type backlight module, characterized in that a light source moving module is installed on a substrate, and a light source is mounted on the light source moving module. According to claim 1,
The light source moving module is configured to move the L-shaped shifter lever and the L-shaped shift lever, which are installed symmetrically with the light source support, and are configured to move the light source support to move up and down to perform a fan-shaped movement. Edge type backlight module, characterized in that it includes a rotating device used to do so. 3. The method of claim 2,
The light source support includes a horizontal support rod and two longitudinal guide rods perpendicular to the horizontal support rod, the light source is mounted on the horizontal support rod, and the lower side of the horizontal support rod is an L-shaped shift lever and An edge type backlight module, characterized in that two U-shaped guide members used to match each other are installed symmetrically, and a long bar-shaped through-hole is opened in both walls of each guide member along the horizontal direction. 4. The method of claim 3,
A U-shaped positioning member used to limit a movement position of the longitudinal guide rod is installed on the second substrate at a position corresponding to the longitudinal guide rod, and the longitudinal guide rod is formed between the U-shaped positioning member and the second substrate. An edge type backlight module, characterized in that it is located inside the cavity formed between the two substrates. 3. The method of claim 2,
Edge type backlight, characterized in that the second substrate is provided with a rotation shaft at a position corresponding to the L-type shift lever, and a connection point between the horizontal section and the vertical section of the L-type shift lever is installed on the rotation shaft of the second substrate. module. 6. The method of claim 5,
One end of the horizontal section of the L-shaped shift lever is provided with a projection matching the U-shaped guide member, and the projection of the horizontal section of the L-shaped shift lever is located inside the through hole of the U-shaped guide member. Edge type backlight module. 3. The method of claim 2,
the rotating device includes a rotating plate and a rotating button, and both sides of the rotating plate are respectively connected to one end of the vertical section of the L-shaped shift lever through a connecting rod;
The rotation button is mounted on the rear side of the second substrate, the edge type backlight module, characterized in that connected to each other with the rotation plate through a connecting shaft. According to claim 1,
It further includes a light blocking module, wherein the light blocking module includes a cover plate installed on the outside of the light source moving module and a light blocking plate installed on the cover plate, both ends of the cover plate are fixedly connected to the second substrate, and both sides of the light blocking plate Edge-type backlight module, characterized in that it is fixed to the cover plate by being sandwiched through the edge holder. In the liquid crystal display device,
A liquid crystal display device comprising an edge type backlight module and a light guide plate according to any one of claims 1 to 8, wherein the light guide plate is fixed to the backlight plate main body and installed to face the light source. . In the light guide plate optical verification method,
The method is implemented based on the edge type backlight module according to any one of claims 1 to 8, and the method includes the following steps;
fixing and mounting the light guide plate waiting for verification to the first substrate;
Rotating the rotation button clockwise and rotating the rotation button to configure the rotation plate to move;
configuring the rotating plate to move the two L-shaped shift levers through the two connecting rods to surround the rotating shaft and to perform a sectoral motion;
A step of supporting the light source support while the projections of the two L-shaped shift levers each perform a fan-shaped swing;
The light source support is configured to move the light source so as to move in phase, so that the light source is close to the light entry side of the light guide plate;
obtaining an optical measurement value of the light guide plate by performing optical verification on the light guide plate using an optical measuring instrument of the backlight module; Light guide plate optical verification method comprising a.

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