CN219201979U - Side-entry type backlight module with stable light guide plate installation - Google Patents

Abstract

The utility model discloses a side-in type backlight module with stable light guide plate installation, which comprises an installation backboard, a side-in type light source, a reflecting film, a light guide plate, an optical film component and a fixed front frame, wherein the side-in type light source is fixed on the inner side wall of the installation backboard; the front surface of the light guide plate is provided with a first positioning column, the back surface of the light guide plate is provided with a second positioning column, the fixed front frame is provided with a first positioning jack, the mounting backboard is provided with a second positioning jack, the first positioning column is matched with the first positioning jack, the second positioning column is matched with the second positioning jack, the first positioning column is inserted and fixed in the first positioning jack, and the second positioning column is inserted and fixed in the second positioning jack. The utility model is used as a backlight source of a display device.

Description

Side-entry type backlight module with stable light guide plate installation

Technical Field

The utility model relates to the technical field of backlight sources, in particular to a side-entry type backlight module with a stable light guide plate.

Background

Along with the development of technology and the improvement of living standard, more and more electronic products enter the life of people, and bring convenience to life, for example, display devices such as computers, televisions and vehicle-mounted displays, the display devices such as computers, televisions and vehicle-mounted displays generally adopt liquid crystal display screens, but the liquid crystal display screens cannot emit light autonomously, and a backlight source is required to be configured to provide backlight for the liquid crystal display screens, so that the display function of the liquid crystal display screens is realized. The backlight source comprises a direct type backlight module and a side-in type backlight module, wherein the side-in type backlight module is thinner and can be thinner and more attractive when used for display devices such as computers, televisions and vehicle-mounted displays, so that the side-in type backlight module is more used for the display devices such as the computers, the televisions and the vehicle-mounted displays. The side-entering type backlight module comprises a back plate, a side-entering type light source, a light guide plate, an optical diaphragm, a front frame and the like, the light guide plate of the existing side-entering type backlight module is generally and directly placed in the back plate, but the light guide plate is heavy in weight, the light guide plate is mounted in the back plate in an unstable mode, the light guide plate is prone to moving, colliding and damaging the side-entering type light source and other structures in the back plate, the use stability of the backlight module is affected, and particularly the light guide plate is prone to shaking in the back plate in bumpy environments such as when the display device is used for vehicle-mounted display. For example, the light guide plate in the patent document CN201210264173.5 backlight module is directly placed in the back plate, the light guide plate is not stably installed in the back plate, and the light guide plate is easy to move, collide and damage the side-entry light source and other structures in the back plate, so that the use stability of the backlight module is affected.

Disclosure of Invention

The utility model provides a side-entry type backlight module capable of solving the technical problem that the use stability of the backlight module is affected by the fact that a light guide plate of the backlight module is directly placed in a back plate, the light guide plate is unstable to install in the back plate and is easy to move, collide and damage side-entry type light sources and other structures in the back plate.

In order to solve the technical problems, the technical scheme of the utility model is as follows: the side-entering type backlight module comprises a mounting backboard, a side-entering type light source, a reflecting film, a light guide plate, an optical film component and a fixed front frame, wherein the side-entering type light source is fixed on the inner side wall of the mounting backboard; the light guide plate is characterized in that a first positioning column is arranged on the front surface of the light guide plate, a second positioning column is arranged on the back surface of the light guide plate, a first positioning jack is arranged on the fixed front frame, a second positioning jack is arranged on the mounting backboard, the first positioning column is matched with the first positioning jack, the second positioning column is matched with the second positioning jack, the first positioning column is fixedly inserted into the first positioning jack, and the second positioning column is fixedly inserted into the second positioning jack.

Further, a buffer cushion block is arranged on the outer side of the first positioning column and/or the second positioning column, and the first positioning column and/or the second positioning column is/are fixed in the first positioning jack and/or the second positioning jack through the buffer cushion block in a plugging mode.

Further, a support column is arranged on one side, close to the side-entry light source, of the light guide plate, and the light guide plate is supported in front of the side-entry light source through the support column.

Further, one side of the light guide plate, which is far away from the side-in type light source, is provided with a clamping cushion block, and the light guide plate is clamped and fixed in the mounting backboard through the clamping cushion block.

Further, a T-shaped clamping groove is formed in the mounting backboard, a T-shaped clamping block is arranged on the outer side of the fixed front frame, the T-shaped clamping groove is matched with the T-shaped clamping block, and the T-shaped clamping block is adhered in the T-shaped clamping groove.

Further, the installation backplate outside is provided with the external fixation draw-in groove, be provided with the internal fixation fixture block in the external fixation draw-in groove, the fixed front bezel outside is provided with L shape fixed clip ear, L shape fixed clip ear is provided with the fixed card hole, external fixation draw-in groove and L shape fixed clip ear looks adaptation, internal fixation fixture block and fixed card hole looks adaptation, L shape fixed clip ear card is fixed in the external fixation draw-in groove, the internal fixation fixture block card is fixed in the fixed card hole.

Further, an inner fixing clamping groove is formed in the inner side wall of the mounting backboard, an outer fixing clamping block is arranged on the outer side of the fixing front frame, the inner fixing clamping groove is matched with the outer fixing clamping block, and the outer fixing clamping block is clamped in the inner fixing clamping groove.

Further, the optical film component comprises a light scattering film, a light intensifying film and a peep-proof film, and the light scattering film, the light intensifying film and the peep-proof film are sequentially overlapped on the light guide plate; the light-scattering film, the light-intensifying film and the peep-proof film are all provided with third positioning jacks, the third positioning jacks are matched with the first positioning columns, and the first positioning columns are fixedly inserted into the third positioning jacks.

Furthermore, the optical film assembly further comprises a fixing double-sided adhesive tape, and the light scattering film and the light intensifying film and the peep-proof film are fixedly adhered together through the fixing double-sided adhesive tape.

Further, the optical film assembly comprises a surface foam rubber, wherein the surface foam rubber is attached to one side of the fixed front frame, which is far away from the optical film assembly, and the surface foam rubber is covered on the first positioning insertion hole.

The beneficial effects achieved by the utility model mainly comprise the following points: the fixed front frame is fixed on the mounting backboard, and the fixed front frame presses and fixes the light guide plate and the optical membrane assembly in the mounting backboard, so that a side-in type backlight module with stable structure is formed, and the use stability of the side-in type backlight module is ensured. The light guide plate is fixed in the first positioning jack on the fixed front frame through the first positioning column grafting that openly sets up, and in the second positioning jack of installation backplate is fixed in the grafting of the second positioning column that sets up through the back to can be with the stable fixing of light guide plate on fixed front frame and installation backplate, the light guide plate is installed stably in backlight unit, is difficult to take place to remove in the installation backplate to collide and damage structure such as side income formula light source, can guarantee backlight unit stability in use.

Drawings

FIG. 1 is a schematic diagram of an explosion structure of a side-entry backlight module with a stable light guide plate in an embodiment of the utility model;

FIG. 2 is a schematic view of a mounting backplate according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of the portion A in FIG. 2;

FIG. 4 is an enlarged schematic view of the portion B in FIG. 2;

FIG. 5 is a schematic view of a structure of a front fixing frame according to an embodiment of the present utility model;

FIG. 6 is an enlarged schematic view of the portion C in FIG. 5;

FIG. 7 is an enlarged schematic view of the portion D in FIG. 5;

FIG. 8 is an enlarged schematic view of the portion E in FIG. 5;

FIG. 9 is a schematic view of a back surface of a light guide plate according to an embodiment of the present utility model;

fig. 10 is an enlarged schematic view of the portion F in fig. 9;

FIG. 11 is a schematic diagram of a front surface of a light guide plate according to an embodiment of the present utility model;

FIG. 12 is an enlarged schematic view of the portion G of FIG. 11;

FIG. 13 is a schematic view of a front surface mounting buffer pad of a light guide plate according to an embodiment of the present utility model;

FIG. 14 is an enlarged schematic view of the H portion of FIG. 13;

FIG. 15 is a schematic view of a side of a cushion block according to an embodiment of the present utility model;

FIG. 16 is a schematic view of another side of a cushion block according to an embodiment of the present utility model;

FIG. 17 is a schematic view showing the structures of a light diffusing film, a light intensifying film and a privacy film according to an embodiment of the present utility model;

FIG. 18 is an enlarged schematic view of the portion I of FIG. 17;

fig. 19 is a schematic diagram showing an overall structure of an assembled side-entry backlight module with a stable light guide plate according to an embodiment of the utility model.

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted; the same or similar reference numerals correspond to the same or similar components; the terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limiting the present patent.

Detailed Description

The present utility model will be described in further detail below with reference to the drawings and examples for the understanding of those skilled in the art.

Example 1

Referring to fig. 1 to 19, a side-entry backlight module with stable light guide plate installation is used for a backlight source of a liquid crystal display. The side-in type backlight module comprises a mounting backboard 1, a side-in type light source 2, a reflecting film 3, a light guide plate 4, an optical film component 5 and a fixed front frame 6, wherein the side-in type light source 2 is adhered and fixed on the inner side wall of the mounting backboard 1 through a heat conduction double faced adhesive tape 21, the reflecting film 3, the light guide plate 4 and the optical film component 5 are sequentially overlapped in the mounting backboard 1, the fixed front frame 6 is fixed on the mounting backboard 1, and the fixed front frame 6 presses and fixes the light guide plate 4 and the optical film component 5 in the mounting backboard 1, so that the side-in type backlight module with stable structure is formed, and the use stability of the side-in type backlight module is ensured.

Referring to fig. 2 to 16, the front surface of the light guide plate 4 is provided with a first positioning column 41, the back surface of the light guide plate 4 is provided with a second positioning column 42, the fixed front frame 6 is provided with a first positioning jack 61, the mounting backboard 1 is provided with a second positioning jack 11, the first positioning column 41 is adapted to the first positioning jack 61, that is, the position, the size and the shape of the first positioning column 41 are consistent with those of the first positioning jack 61, so that the first positioning column 41 can be just inserted and fixed in the first positioning jack 61. The second positioning column 42 is matched with the second positioning jack 11, that is, the position, size and shape of the second positioning column 42 are consistent with those of the second positioning jack 11, so that the second positioning column 42 can be just inserted and fixed in the second positioning jack 11. The light guide plate 4 is fixed in the first positioning jack 61 on the fixed front frame 6 through the first positioning column 41 in the front setting, and is fixed in the second positioning jack 11 of the installation backboard through the second positioning column 42 in the back setting in the inserting way, so that the light guide plate 4 can be stably fixed on the fixed front frame 6 and the installation backboard 1, the light guide plate is stably installed in the backlight module, the structures such as the side-in type light source and the like are not easy to generate moving collision damage in the installation backboard, and the use stability of the backlight module can be ensured. The first positioning column 41 and the second positioning column 42 may be integrally formed at the time of injection molding of the light guide plate 4.

Referring to fig. 11 to 16, in order to avoid the first positioning column 41 and/or the second positioning column 42 from breaking in the first positioning jack 61 and/or the second positioning jack 11 when the light guide plate 4 moves and is stressed in the mounting backboard 1, a buffer cushion block 7 is disposed outside the first positioning column 41 and/or the second positioning column 42, and the first positioning column 41 and/or the second positioning column 42 is fixed in the first positioning jack 61 and/or the second positioning jack 11 through the buffer cushion block 7 in a plugging manner, so that the first positioning column 41 and/or the second positioning column 42 can not easily break in a hard collision with the side wall of the first positioning jack 61 and/or the second positioning jack 11 through the buffer cushion block 7 in the first positioning jack 61 and/or the second positioning jack 11 when the light guide plate 4 moves and is stressed in the mounting backboard 1, and the stability of the side-entering backlight module is further improved. The buffer cushion block 7 can adopt a rubber cushion block, the size and the appearance of the buffer cushion block 7 are consistent with those of the first positioning jack 61 and/or the second positioning jack 11, and a groove is arranged on one side of the buffer cushion block 7 and is installed with the first positioning column 41 and/or the second positioning column 42. The first positioning column 41 and the second positioning column 42 may be provided with the buffer cushion block 7, or the first positioning column 41 or the second positioning column 42 may be provided with the buffer cushion block 7, and in this embodiment, the structure in which the second positioning column 42 is provided with the buffer cushion block 7 is shown.

Referring to fig. 9 to 14, a support column 43 is disposed on a side of the light guide plate 4 near the side-entrance light source 2, and the light guide plate 4 is supported in front of the side-entrance light source 2 by the support column 43, so as to further avoid damage to the side-entrance light source 2 caused by movement of the light guide plate 4 in the backlight module; and the side-entry light source 2 can be separated from the light guide plate 4, so that the light guide plate 4 is prevented from being damaged by heating during the operation of the side-entry light source 2.

Referring to fig. 1, a clamping cushion block 8 is disposed on a side of the light guide plate 4 away from the side-entry light source 2, and the light guide plate 4 is clamped in the mounting backboard 1 through the clamping cushion block 8, so that the light guide plate 4 can be further prevented from moving in the backlight module to damage the side-entry light source 2 and other structures. The clamping cushion block 8 adopts a silica gel cushion block and can be arranged in a straight shape or an L shape.

Referring to fig. 1 to 19, in the production and assembly of the side-entry backlight module of the present embodiment, the reflective film 3 is attached to the bottom of the inner side of the mounting back plate 1 through a double sided adhesive tape, the side-entry light source 2 is fixed on the inner side wall of the mounting back plate 1 through a heat conductive double sided adhesive tape 21, the light guide plate 4 and the optical film assembly 5 are sequentially stacked in the mounting back plate 1, and finally the fixed front frame 6 is mounted on the mounting back plate 1, thereby forming a side-entry backlight module with stable structure. The light guide plate 4 is supported in front of the side-in light source 2 through the support column 43 during installation, is fixedly inserted into the first positioning jack 61 on the fixed front frame 6 through the first positioning column 41 on the front side, is fixedly inserted into the second positioning jack 11 on the installation backboard through the second positioning column 42 on the back side, and is provided with the buffer cushion block 7 on the second positioning column 42.

Example two

Referring to fig. 1 to 19, the side-entry backlight module with stable light guide plate installation in this embodiment is the same as the first embodiment, and the fixing structure for installing the back plate 1 and the fixing front frame 6 is further improved on the basis of the first embodiment. This embodiment is the same as the first embodiment in that reference is made to the first embodiment, and the improvement will be further described below.

Referring to fig. 1 to 8, the mounting backboard 1 is provided with a T-shaped clamping groove 12, a T-shaped clamping block 62 is disposed at the outer side of the fixed front frame 6, the T-shaped clamping groove 12 is matched with the T-shaped clamping block 62, that is, the shape, size, position and number of the T-shaped clamping groove 12 are consistent with those of the T-shaped clamping block 62, so that the T-shaped clamping block 62 can be just mounted in the T-shaped clamping groove 12, and the fixed front frame 6 is not easy to separate from the mounting backboard 1 from the inner side. In addition, the T-shaped clamping block 62 is adhered in the T-shaped clamping groove 12 through the double faced adhesive tape 66, so that the T-shaped clamping block 62 is more stable in fixing in the T-shaped clamping groove 12, and the fixing front frame 6 is more stable in fixing on the mounting backboard 1.

Referring to fig. 1 to 8, an outer fixing clamping groove 13 is formed in the outer side of the mounting backboard 1, an inner fixing clamping block 14 is arranged in the outer fixing clamping groove 13, an L-shaped fixing clamping lug 63 is arranged in the outer side of the fixing front frame 6, a fixing clamping hole 64 is formed in the L-shaped fixing clamping lug 63, and the outer fixing clamping groove 13 is matched with the L-shaped fixing clamping lug 63, namely, the position, the size, the shape and the number of the outer fixing clamping groove 13 are consistent with those of the L-shaped fixing clamping lug 63, so that the L-shaped fixing clamping lug 63 can be just clamped in the outer fixing clamping groove 13. The inner fixing clamping blocks 14 are matched with the fixing clamping holes 64, that is, the positions, sizes, shapes and numbers of the inner fixing clamping blocks 14 are consistent with those of the fixing clamping holes 64, so that the inner fixing clamping blocks 14 are just clamped in the fixing clamping holes 64, and the fixing front frame 6 can be further installed on the installation backboard 1. The outer side of the L-shaped fixing clip lug 63 is preferably attached with L-shaped single-sided adhesive tape 92 to prevent dust from entering the side-entry backlight module from the fixing clip hole 64.

Referring to fig. 1 to 8, an inner fixing clamping groove 15 is formed in the inner side wall of the mounting backboard 1, an outer fixing clamping block 65 is arranged on the outer side of the fixed front frame 6, and the inner fixing clamping groove 15 is matched with the outer fixing clamping block 65, namely, the position, the size, the shape and the number of the inner fixing clamping groove 15 are consistent with those of the outer fixing clamping block 65, so that the outer fixing clamping block 65 can be just clamped in the inner fixing clamping groove 15, and the fixed front frame 6 is further mounted on the mounting backboard 1.

Referring to fig. 1 to 19, in the production and assembly of the side-entry backlight module of the present embodiment, the reflective film 3 is attached to the bottom of the inner side of the mounting back plate 1 through a double sided adhesive tape, the side-entry light source 2 is fixed on the inner side wall of the mounting back plate 1 through a heat conductive double sided adhesive tape 21, the light guide plate 4 and the optical film assembly 5 are sequentially stacked in the mounting back plate 1, and finally the fixed front frame 6 is mounted on the mounting back plate 1, thereby forming a side-entry backlight module with stable structure. The light guide plate 4 is supported in front of the side-in light source 2 through the support column 43 during installation, is fixedly inserted into the first positioning jack 61 on the fixed front frame 6 through the first positioning column 41 on the front side, is fixedly inserted into the second positioning jack 11 on the installation backboard through the second positioning column 42 on the back side, and is provided with the buffer cushion block 7 on the second positioning column 42. When the fixed front frame 6 is installed on the installation backboard 1, the T-shaped clamping block 62 is adhered in the T-shaped clamping groove 12 through the double-sided adhesive tape 66, the L-shaped fixing clamping lug 63 is clamped in the outer fixing clamping groove 13, the inner fixing clamping block 14 is just clamped in the fixing clamping hole 64, and the outer fixing clamping block 65 is clamped in the inner fixing clamping groove 15.

Example III

Referring to fig. 1 to 19, the side-entry backlight module with stable light guide plate installation in this embodiment is the same as the embodiment, and the structure and installation of the optical film assembly 5 are further improved on the basis of the second embodiment. The present embodiment is the same as the second embodiment in that the second embodiment is referred to, and the improvement will be further described below.

Referring to fig. 1, 7-10, 17-19, the optical film assembly 5 includes a light diffusing film 51, a light intensifying film 52 and a peep preventing film 53, wherein the light diffusing film 51, the light intensifying film 52 and the peep preventing film 53 are sequentially stacked on the light guiding plate 4; the third positioning jacks 54 are respectively arranged on the light-scattering film 51, the light-intensifying film 52 and the peep-proof film 53, the third positioning jacks 54 are matched with the first positioning columns 41, namely, the positions, the sizes, the shapes and the numbers of the third positioning jacks 54 are consistent with those of the first positioning columns 41, so that the first positioning columns 41 are just inserted and fixed in the third positioning jacks 54, and the light-scattering film 51, the light-intensifying film 52 and the peep-proof film 53 can be positioned and fixed in the side-entering backlight module. The third positioning jack 54 may be a hole with a closed periphery, or a slot with an open outer part, and in this embodiment, the third positioning jack 54 is provided with a hole and a slot at the same time.

Referring to fig. 1, the optical film assembly 5 further includes a fixing double sided adhesive 55, and the light diffusing film 51 and the light intensifying film 52 and the peep preventing film 53 are adhered and fixed together by the fixing double sided adhesive 55, so that the stability of the optical film assembly 5 in the side-entry backlight module can be enhanced.

Referring to fig. 1 and 19, the surface foam rubber 9 is attached to the side of the fixed front frame 6 away from the optical film assembly 5, and the surface foam rubber 9 covers the first positioning insertion hole 61. Therefore, the liquid crystal panel of the display device can be supported and protected through the surface foam rubber 9, the first positioning jack 61 can be sealed, and dust is prevented from entering the side-entering type backlight module through the first positioning jack 61 to affect the light emission of the backlight module.

Referring to fig. 1 to 19, in the production and assembly of the side-entry backlight module of the present embodiment, the reflective film 3 is attached to the bottom of the inner side of the mounting back plate 1 through a double sided adhesive tape, the side-entry light source 2 is fixed on the inner side wall of the mounting back plate 1 through a heat conductive double sided adhesive tape 21, the light guide plate 4 and the optical film assembly 5 are sequentially stacked in the mounting back plate 1, and finally the fixed front frame 6 is mounted on the mounting back plate 1, thereby forming a side-entry backlight module with stable structure. The light guide plate 4 is supported in front of the side-in light source 2 through the support column 43 during installation, is fixedly inserted into the first positioning jack 61 on the fixed front frame 6 through the first positioning column 41 on the front side, is fixedly inserted into the second positioning jack 11 on the installation backboard through the second positioning column 42 on the back side, and is provided with the buffer cushion block 7 on the second positioning column 42. When the fixed front frame 6 is installed on the installation backboard 1, the T-shaped clamping block 62 is adhered in the T-shaped clamping groove 12 through the double-sided adhesive tape 66, the L-shaped fixing clamping lug 63 is clamped in the outer fixing clamping groove 13, the inner fixing clamping block 14 is just clamped in the fixing clamping hole 64, and the outer fixing clamping block 65 is clamped in the inner fixing clamping groove 15. When the optical film assembly 5 is installed, the light-diffusing film 51, the intensifying film 52 and the peep-proof film 53 are sequentially stacked on the light guide plate 4, the first positioning column 41 is inserted and fixed in the third positioning insertion holes 54 of the light-diffusing film 51, the intensifying film 52 and the peep-proof film 53, and the light-diffusing film 51 and the intensifying film 52 and the peep-proof film 53 are adhered and fixed together through the fixing double-sided adhesive tape 55. After the production and assembly of the side-entry backlight module are completed, the protection film 91 is attached to the outer side of the optical film assembly 5 for protection, and the protection film 91 is torn off when the side-entry backlight module is used.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a light guide plate installs stable side income formula backlight unit which characterized in that: the light source comprises a mounting backboard (1), a side-in light source (2), a reflecting film (3), a light guide plate (4), an optical film component (5) and a fixed front frame (6), wherein the side-in light source (2) is fixed on the inner side wall of the mounting backboard (1), the reflecting film (3), the light guide plate (4) and the optical film component (5) are sequentially overlapped in the mounting backboard (1), the fixed front frame (6) is fixed on the mounting backboard (1), and the fixed front frame (6) is used for fixedly pressing the light guide plate (4) and the optical film component (5) in the mounting backboard (1); the light guide plate (4) openly is provided with first reference column (41), the light guide plate (4) back is provided with second reference column (42), be provided with first location jack (61) on fixed front bezel (6), be provided with second location jack (11) on installation backplate (1), first reference column (41) and first location jack (61) looks adaptation, second reference column (42) and second location jack (11) looks adaptation, first reference column (41) are pegged graft and are fixed in first location jack (61), second reference column (42) are pegged graft and are fixed in second location jack (11).

2. The stable light guide plate mounting side entry backlight module of claim 1, wherein: the outer sides of the first positioning columns (41) and/or the second positioning columns (42) are provided with buffer cushion blocks (7), and the first positioning columns (41) and/or the second positioning columns (42) are fixed in the first positioning jacks (61) and/or the second positioning jacks (11) in a plugging mode through the buffer cushion blocks (7).

3. The stable light guide plate mounting side-entry backlight module of claim 2, wherein: the side of the light guide plate (4) close to the side-entering type light source (2) is provided with a support column (43), and the light guide plate (4) is supported in front of the side-entering type light source (2) through the support column (43).

4. A side-entry backlight module with stable light guide plate mounting as claimed in claim 3, wherein: one side of the light guide plate (4) far away from the side-in light source (2) is provided with a clamping cushion block (8), and the light guide plate (4) is clamped and fixed in the mounting backboard (1) through the clamping cushion block (8).

5. The side-entry backlight module with stable light guide plate installation according to any one of claims 1 to 4, wherein: the mounting backboard (1) is provided with a T-shaped clamping groove (12), a T-shaped clamping block (62) is arranged on the outer side of the fixed front frame (6), the T-shaped clamping groove (12) is matched with the T-shaped clamping block (62), and the T-shaped clamping block (62) is adhered in the T-shaped clamping groove (12).

6. The stable side-entry backlight module of claim 5, wherein: the mounting backboard (1) outside is provided with outer fixed clamping groove (13), be provided with internal fixation fixture block (14) in outer fixed clamping groove (13), the fixed front bezel (6) outside is provided with L shape fixed clamping ear (63), L shape fixed clamping ear (63) are provided with fixed card hole (64), outer fixed clamping groove (13) and L shape fixed clamping ear (63) looks adaptation, internal fixation fixture block (14) looks adaptation with fixed card hole (64), L shape fixed clamping ear (63) card is fixed in outer fixed clamping groove (13), internal fixation fixture block (14) card is fixed in fixed card hole (64).

7. The stable side entry backlight module of claim 6, wherein the light guide plate comprises: the mounting backboard (1) is provided with an inner fixing clamping groove (15) on the inner side wall, an outer fixing clamping block (65) is arranged on the outer side of the fixing front frame (6), the inner fixing clamping groove (15) is matched with the outer fixing clamping block (65), and the outer fixing clamping block (65) is clamped and fixed in the inner fixing clamping groove (15).

8. The stable light guide plate mounting side entry backlight module of claim 7, wherein: the optical film assembly (5) comprises a light scattering film (51), a light intensifying film (52) and a peep-proof film (53), wherein the light scattering film (51), the light intensifying film (52) and the peep-proof film (53) are sequentially stacked on the light guide plate (4); third positioning jacks (54) are formed in the light scattering film (51), the light intensifying film (52) and the peep-proof film (53), the third positioning jacks (54) are matched with the first positioning columns (41), and the first positioning columns (41) are fixedly inserted into the third positioning jacks (54).

9. The stable light guide plate mounting side entry backlight module of claim 8, wherein: the optical film assembly (5) further comprises a fixed double-sided adhesive tape (55), and the light scattering film (51) and the light intensifying film (52) and the peep-proof film (53) are adhered and fixed together through the fixed double-sided adhesive tape (55).

10. The stable light guide plate mounting side entry backlight module of claim 9, wherein: the optical film assembly further comprises surface foam rubber (9), wherein the surface foam rubber (9) is attached to one side, far away from the optical film assembly (5), of the fixed front frame (6), and the surface foam rubber (9) covers the first positioning jack (61).

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