CN220526145U

CN220526145U - Optical film fixing structure, display module and display device

Info

Publication number: CN220526145U
Application number: CN202320752868.1U
Authority: CN
Inventors: 杨磊; 邓丹; 樊劼
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2023-04-06
Filing date: 2023-04-06
Publication date: 2024-02-23
Anticipated expiration: 2033-04-06

Abstract

The utility model discloses an optical film fixing structure, a display module and a display device, wherein the optical film fixing structure comprises a fixing frame and an optical film, and the fixing frame is connected with the optical film through a buckle; according to the utility model, the detachable buckle fixing structure of the optical diaphragm is formed by matching the optical diaphragm with the fixing frame, so that on one hand, the fixing structure is simple, the operation is convenient, and the display screen can be prevented from being wrinkled caused by displacement of the diaphragm material in production, experiments and daily use; on the other hand, the detachable buckle is used as an installation fixing piece to replace a screw, so that the assembly efficiency between the optical diaphragm and the fixing frame can be improved, the problem that sliding teeth and the like in a screw fixing mode affect the assembly yield of the optical diaphragm of the backlight module is avoided, and meanwhile, the problem that the optical diaphragm is scratched in the screw fixing mode to increase the assembly cost of the liquid crystal display is avoided.

Description

Optical film fixing structure, display module and display device

Technical Field

The utility model relates to the technical field of electronic display equipment accessories, in particular to an optical film fixing structure, a display module and a display device.

Background

The display module is one of the key components of the liquid crystal display, and is used for providing enough light sources with uniform brightness and distribution so that the liquid crystal display can normally display images. Because the module backboard of most liquid crystal display needs to be connected with the shell of the display when being assembled, other elements are required to be installed between the module backboard and the shell, and the pressing strip used for fixing the optical diaphragm group on the module backboard cannot be connected with the module backboard in a welding and integrated forming mode, the pressing strip is usually locked and attached on the outer turnup edge of the module backboard by using screws. In the process of assembling the optical membrane of the display module, the optical membrane is fixed by adopting the pressing strips and the screws, the locking and the fixing of the module backboard and the pressing strips can be completed by arranging a plurality of screw fixing positions, the screw tightening process consumes more time, the screw tightening or the disassembling process is carried out, the matching of the screws and the threads has the probability of generating sliding teeth, the optical membrane assembling yield of the display module is affected, the optical membrane is scratched easily, and the assembling cost of the liquid crystal display screen is increased.

On the other hand, patent number CN 218630451U's patent discloses the optics diaphragm fixed knot of display module assembly constructs, including backplate and optics diaphragm, the backplate includes bottom plate, lateral wall and roof, and the lateral wall is upwards buckled by arbitrary side edge of bottom plate and forms, and the roof is upwards extended by the edge bending of lateral wall and forms, is provided with the briquetting on the roof, cooperatees between briquetting and the backplate and forms the holding chamber of inboard "U", and the holding chamber is used for placing optics diaphragm, is provided with the buckle subassembly of being convenient for adjust on the roof. The height of the top plate of the optical film fixing structure of the display module is smaller than the length of the bottom plate, and the pressing blocks are of U-shaped structures and are matched with the top plate; the buckle component of the optical film fixing structure of the display module comprises a buckle block, wherein the outer side of the top plate is provided with a containing groove which is of a T-shaped notch structure, the mounting block is provided with a fixing screw, and the other end of the buckle block is positioned in the containing groove and is provided with a limiting block; the outside of the pressing block of the optical film fixing structure of the display module is provided with a plurality of clamping grooves which are transversely distributed along the outside of the pressing block, and the optical film is of a diffusion plate structure; the optical film fixing structure of the display module is characterized in that the buckling blocks of the optical film fixing structure of the display module are connected to the mounting blocks in a sliding mode, the end parts of the buckling blocks are of an inclined structure from top to bottom outwards, and the inclined ends of the buckling blocks are matched with the clamping grooves in a one-to-one correspondence mode; the end part of the fixing screw of the optical film fixing structure of the display module is accommodated in the accommodating groove, an installing block is arranged at the opening of the accommodating groove, and an elastic piece is arranged between the limiting block and the inner end of the accommodating groove. Therefore, the clamping and fixing structure of the optical membrane is formed through the cooperation between the pressing block and the back plate, the clamping and fixing structure is used as the installation fixing piece to replace a screw, the assembly efficiency between the optical membrane of the display module and the back plate is improved, the problem that the sliding teeth and the like in the screw fixing form influence the assembly yield of the optical membrane of the display module is avoided, and meanwhile the problem that the screw fixing form scratches the optical membrane to increase the assembly cost of the liquid crystal display screen is avoided.

However, the optical film fixing structure of the display module also has some defects that the parts are numerous, the assembly cost is increased, the pressing block is a detachable part, and the pressing block is easy to drop and lose during assembly, so that the assembly efficiency is reduced.

Disclosure of Invention

In order to solve the above-mentioned shortcomings of the prior art, the present utility model provides an optical film fixing structure, a display module and a display device, so as to solve the above-mentioned problems in the prior art.

The technical problems to be solved by the utility model are realized by the following technical scheme:

according to a first aspect of the embodiment of the application, an optical membrane fixing structure is provided, the optical membrane fixing structure comprises a fixing frame and an optical membrane, the fixing frame comprises a frame and a back plate, the optical membrane is arranged in a space surrounded by the frame and the back plate, and a buckle is arranged between the fixing frame and the optical membrane for connection.

Further, the buckle is including setting up in the spacing recess of fixed frame side to and set up in the arch of optics diaphragm side, in the arch can imbed spacing recess, spacing recess with fixed frame and optics diaphragm four sides are located to protruding equidistance or unequally, are equipped with spacing recess and protruding movable gap after the embedding between fixed frame and the optics diaphragm.

The limiting groove comprises a T-shaped limiting groove and a trapezoid limiting groove;

the bulge comprises a T-shaped bolt and a trapezoid bolt;

the T-shaped bolts are connected with the optical membrane and are arranged on four sides of the optical membrane, two groups of the T-shaped bolts are opposite to each other, and the T-shaped bolts correspond to the T-shaped limiting grooves one by one.

Further, the trapezoid bolts are connected with the optical film and are arranged on four sides of the optical film, two groups of the trapezoid bolts are opposite to each other, and the trapezoid bolts correspond to the trapezoid limiting grooves one by one.

Further, the buckle comprises a fixing column arranged on the side edge of the fixing frame and an opening arranged on the side edge of the optical film, the fixing column can be sleeved into the opening, and the fixing column and the opening are equidistantly or unequally arranged on the four sides of the fixing frame and the optical film.

Further, the fixed column is a polygonal column, the opening is a polygonal opening, a first connecting groove is formed outside the polygonal column in a surrounding mode, the long side of the polygonal column facing outwards is overlapped with the long side of the groove of the fixed frame, the line segment center of the long side of the column is overlapped with the line segment center of the long side of the groove, the long side of the column is smaller than the long side of the groove, and the short side of the column of the polygonal column is smaller than the short side of the groove of the fixed frame.

Further, the fixed column is a cylinder, the opening is a circular opening, a second connecting groove is formed outside the cylinder in a surrounding mode, a connecting line of the center of the bottom surface of the cylinder and the center of the groove is perpendicular to the side edge of the groove, the bottom surface of the second connecting groove is a semicircle with a radius, and the diameter of the bottom surface of the cylinder is smaller than the radius of the groove.

Further, the optical film fixing structure comprises adhesive or double-sided adhesive arranged at the periphery of the optical film and adhesive or double-sided adhesive arranged at the mounting side of the optical film of the backboard at the bottom of the fixing frame.

In a second aspect of the embodiments of the present application, a display module is provided, including a plurality of backlights and an optical film fixing structure according to the first aspect, the plurality of backlights are disposed on a back plate of the fixing frame at intervals, and are located at a bottom of the optical film relatively, or are disposed at a side edge of a frame of the fixing frame, and are located at a side edge of the optical film relatively, and the optical film is disposed at a light emitting side of the backlight.

In a third aspect of the embodiments of the present application, a display device is provided, including a display panel and the display module of the second aspect, where the display panel is disposed on a light emitting side of the display module.

The utility model has the following beneficial effects: according to the utility model, the buckle fixing structure of the optical diaphragm is formed through the buckle fit between the optical diaphragm and the backboard, the buckle is used as an installation and fixation substitute screw or pressing block, the screw or pressing block is prevented from falling and losing, the assembly efficiency between the optical diaphragm of the display module and the backboard is improved, the assembly cost is greatly reduced, and the fold caused by the displacement of the film material in the production, the experiment and the daily use of the display screen is avoided.

Drawings

FIG. 1 is a schematic structural view of an optical film fixing structure according to the present utility model.

Fig. 2 is a schematic diagram of a fastening structure of the fixing frame and the optical film according to the present utility model.

Fig. 3 is a schematic view of a fastening structure of the fixing frame and the optical film according to the present utility model.

Fig. 4 is a schematic structural view of a polygonal fixing column on a fixing frame according to the present utility model.

FIG. 5 is a schematic diagram of a polygonal open-cell structure on an optical film according to the present utility model.

FIG. 6 is a schematic view of a circular open-cell structure on an optical film according to the present utility model.

Fig. 7 is a schematic view of a cylindrical fixing column structure on a fixing frame according to the present utility model.

Fig. 8 is a schematic diagram of a gap structure between a limiting groove and a protrusion on a fixing frame of the present utility model.

1. An optical film; 2. a fixed frame; 201. a first connection groove (polygonal column periphery); 202. a second connection groove (cylinder periphery); 301. t-shaped pins (connected to the optical film); 302. a trapezoidal latch (connected with the optical film); 401. t-shaped grooves (provided on the fixed frame); 402. trapezoidal grooves (provided on the fixed frame); 5. polygonal column (fixed column on fixed frame); a. a polygonal column bottom edge; b. the long side of the groove (the groove on the fixed frame); c. the bottom edge of the polygonal column body is wide; d. the groove bottom side is wide; 6. polygonal openings (openings in the optical film); 7. a cylinder (fixed column on the fixed frame); r, diameter of cylinder; r, groove radius; 8. circular openings (openings in the optical film), 9, adhesive or double sided tape; 10. gap (between limit groove and bump).

Detailed Description

The present utility model is described in detail below with reference to the drawings and the embodiments, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

According to the first aspect of the embodiment, as shown in fig. 1 and 2, an optical film fixing structure is provided, which comprises a fixing frame 2 and an optical film 1, the fixing frame 2 comprises a frame and a back plate, the optical film 1 is arranged in a space surrounded by the frame and the back plate, a buckle is arranged between the fixing frame 2 and the optical film 1 and is connected with the optical film 1, the buckle comprises a limiting groove arranged on the side of the fixing frame 2 and a protrusion arranged on the side of the optical film 1, the protrusion can be embedded into the limiting groove, the limiting groove and the protrusion are equidistantly or unequally arranged on the four sides of the fixing frame 2 and the optical film 1, a gap 10 which is still movable after the protrusion is embedded is arranged between the fixing frame 2 and the optical film 1, the limiting groove is a T-shaped limiting groove 401, the protrusion is connected with the optical film 1 four sides of the T-shaped plug 301, the protrusions are arranged on the four sides of the optical film 1, and the protrusion positions of the optical film 1 are correspondingly provided with the limiting grooves on the fixing frame 2.

In order to prevent the buckle interface from deforming due to thermal expansion and cold contraction caused by overheat of the back plate, a gap 10 which can still move after the grooves and the protrusions are embedded is arranged between the fixed frame 2 and the optical film 1.

In order to prevent the optical film from sliding relatively during handling, the periphery of the optical film 1 is provided with adhesive or double-sided tape 9 and the adhesive or double-sided tape 9 is arranged on the mounting side of the back plate optical film at the bottom of the fixed frame 2.

Example two

As shown in fig. 3, the difference between the present embodiment and the first embodiment is that the limiting groove between the optical film 1 and the fixed frame 2 is a trapezoidal limiting groove 402, the protrusion is a trapezoidal bolt 302, which is connected with the optical film 1 and is disposed on four sides of the optical film, two groups of the protrusions of the optical film 1 are opposite to each other, and the position of the protrusion of the optical film 1 corresponding to the position on the fixed frame 2 is provided with the limiting groove.

During installation, the optical diaphragm 1 is parallel to the fixed frame 2, the bulge of the optical diaphragm 1 is embedded into the groove of the fixed frame 2, and the bulge is used as an installation and fixation substitute screw or pressing block through the buckle, so that the screw or the pressing block is prevented from falling and losing, the assembly efficiency between the optical diaphragm of the display module and the backboard is improved, parts are optimized, and the assembly cost is greatly reduced.

In this embodiment, be connected for mortise and tenon structure between optics diaphragm 1 and the fixed frame 2, except above-mentioned connection shape still be applicable to the mortise and tenon structure of other detachable connection shapes.

In order to prevent the buckle interface from deforming due to thermal expansion and cold contraction caused by overheat of the backboard, a groove and a gap which can still move after the protrusion is embedded are arranged between the fixed frame 2 and the optical film 1.

Example III

In this embodiment, as shown in fig. 4 to 7, the difference between the present embodiment and the first embodiment or the second embodiment is that the buckle includes a fixing post disposed on the side of the fixing frame 2 and an opening disposed on the side of the optical film 1, the fixing post can be sleeved in the opening, and the fixing post and the opening are disposed on four sides of the fixing frame 2 and the optical film 1 at equal or unequal intervals.

The fixed column is a polygonal column 5, the open pore is a polygonal open pore 6, a first connecting groove 201 is surrounded outside the polygonal column 5, a column long side a of the polygonal column 5 towards the outside coincides with a groove long side b of the fixed frame 2, the line segment center of the column long side a coincides with the line segment center of the groove long side b, the column long side a is smaller than the groove long side b, and a column short side c of the polygonal column 5 is smaller than a groove short side d of the fixed frame 2.

Or, the fixed column is a cylinder 7, the opening is a circular opening 8, a second connecting groove 202 surrounds the outside of the cylinder 7, a connecting line between the center of the bottom surface of the cylinder 7 and the center of the groove is perpendicular to the side edge of the groove, the bottom surface of the second connecting groove 202 is a semicircle with a radius R, and the diameter R of the bottom surface of the cylinder is smaller than the radius R of the groove.

The fixing column is arranged in the groove on the side edge of the fixing frame 2, the height of the fixing column is flush with the side edge, and when the optical film 1 is installed in the embodiment, the opening of the optical film 1 is sleeved into the fixing column of the fixing frame 2 in parallel to the fixing frame 2.

In this embodiment, the cylinder may be a half cylinder, where the center of the bottom surface of the half cylinder coincides with the center of the groove, and the diameter of the bottom edge coincides with the side edge of the groove, and the diameter of the bottom surface of the cylinder is smaller than the diameter of the groove.

The present embodiment is not limited to the quadrangular columns and cylinders shown in fig. 4 and 6, but may be other applicable structures, and other structures of the fixing columns are not shown on the fixing frame 2.

Example IV

In a second aspect of the present embodiment, a display module is provided, including a plurality of backlights, and the optical film fixing structure according to any one of the first to third embodiments, the backlights are disposed on the back plate of the fixing frame 2 at intervals, and are located at the bottom of the optical film 1, or are disposed at the side edge of the frame of the fixing frame 2, and are located at the side edge of the optical film 1, and the optical film 1 is disposed at the light emitting side of the backlight. The optical film 1 with the buckle structure can improve the assembly efficiency between the optical film 1 and the backboard of the display module, optimize components, greatly reduce assembly cost, and avoid the fold caused by the displacement of the film material in the production, the experiment and the daily use of the display screen, thereby affecting the imaging quality.

The display module further comprises a diffusion component arranged between the backlight source and the optical film 1, and the diffusion component can diffuse light emitted by the backlight source, so that the light emitted by the diffusion component has good brightness uniformity.

Example five

In a third aspect of the embodiments of the present application, a display device is provided, including a display panel and the display module of the fourth embodiment, where the display panel is disposed on a light emitting side of the display module.

The display device may be: any product or component with display function such as a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet personal computer and the like.

Finally, it should be noted that the foregoing embodiments are merely for illustrating the technical solution of the embodiments of the present utility model and are not intended to limit the embodiments of the present utility model, and although the embodiments of the present utility model have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the embodiments of the present utility model may be modified or replaced with the same, and the modified or replaced technical solution may not deviate from the scope of the technical solution of the embodiments of the present utility model.

Claims

1. The utility model provides an optical film piece fixed knot constructs, includes fixed frame (2) and optical film piece (1), and fixed frame (2) are including frame and backplate, and in the space that frame and backplate enclose was arranged in to optical film piece (1), its characterized in that: a buckle is arranged between the fixed frame (2) and the optical membrane (1) for connection;

the buckle comprises a limit groove arranged on the side edge of the fixed frame (2) and a bulge arranged on the side edge of the optical membrane (1), wherein the bulge can be embedded into the limit groove, the limit groove and the bulge are equidistantly or unequally arranged on the four sides of the fixed frame (2) and the optical membrane (1), and a limit groove and a gap (10) which can still move after the bulge is embedded are arranged between the fixed frame (2) and the optical membrane (1);

the limiting grooves comprise T-shaped limiting grooves (401) and trapezoid limiting grooves (402);

the bulge comprises a T-shaped bolt (301) and a trapezoid bolt (302);

the T-shaped bolts (301) are connected with the optical film (1) and are arranged on four sides of the optical film (1), two groups of the T-shaped bolts are opposite to each other, and the T-shaped bolts (301) correspond to the T-shaped limiting grooves (401) one by one.

2. The optical film fixing structure according to claim 1, wherein: the trapezoid bolts (302) are connected with the optical film (1) and are arranged on four sides of the optical film, two groups of the trapezoid bolts are opposite to each other, and the trapezoid bolts (302) correspond to the trapezoid limiting grooves (402) one by one.

3. The optical film fixing structure according to claim 1, wherein: the buckle comprises a fixed column arranged on the side edge of the fixed frame (2) and an opening arranged on the side edge of the optical diaphragm (1), wherein the fixed column can be sleeved in the opening, and the fixed column and the opening are equidistantly or unequally arranged on the four sides of the fixed frame (2) and the optical diaphragm (1).

4. The optical film fixing structure according to claim 3, wherein: the fixed column is polygon column (5), and the trompil is polygon trompil (6), around having first connection recess (201) outside polygon column (5), polygon column (5) outside one side column long limit (a) and fixed frame (2)'s recess long limit (b) coincide mutually, and column long limit (a) line segment center and recess long limit (b) line segment center coincidence, column long limit (a) are less than recess long limit (b), column short limit (c) of polygon column (5) are less than fixed frame (2) recess short limit (d).

5. The optical film fixing structure according to claim 3, wherein: the fixed column is a cylinder (7), the opening is a circular opening (8), a second connecting groove (202) is wound around the periphery of the cylinder (7), the connecting line of the center of the bottom surface of the cylinder (7) and the center of the groove is perpendicular to the side edge of the groove, the bottom surface of the second connecting groove (202) is a semicircle with a radius (R), and the diameter (R) of the bottom surface of the cylinder is smaller than the radius (R) of the groove.

6. The optical film fixing structure according to claim 1, wherein: the device comprises adhesive or double-sided adhesive (9) arranged at the peripheral edge of an optical film (1) and adhesive or double-sided adhesive (9) arranged at the mounting side of the optical film of the back plate at the bottom of a fixed frame (2).

7. A display module assembly, its characterized in that: the optical film fixing structure according to any one of claims 1 to 6 comprises a plurality of backlight sources, wherein the backlight sources are arranged on the back plate of the fixing frame (2) at intervals and are oppositely arranged at the bottom of the optical film (1) or are arranged on the side edge of the frame of the fixing frame (2), and are oppositely arranged on the side edge of the optical film (1), and the optical film (1) is arranged on the light emitting side of the backlight sources.

8. A display device, characterized in that: the display module comprises a display panel and the display module set as claimed in claim 7, wherein the display panel is arranged on the light emitting side of the display module set.