CN215376013U - Backlight module and display terminal - Google Patents

Abstract

The embodiment of the application discloses backlight module and display terminal. Wherein, backlight unit includes: a back plate; the lamp strip comprises a circuit board and a lamp bead arranged on the circuit board, and the circuit board is arranged on the back plate; the reflector plate is arranged on the back plate, and a first through hole for the lamp bead to pass through is formed in the reflector plate; the circuit board is provided with a buckle, the reflector plate is further provided with a second through hole, and the buckle penetrates through the second through hole and is used for limiting the position of the reflector plate; the buckle includes: one end of the buckling column is fixedly arranged on the circuit board; the limiting part is arranged at one end, far away from the circuit board, of the buckling column, the outer diameter of the limiting part is larger than that of the buckling column, and the inner diameter of the second through hole is smaller than that of the limiting part and larger than or equal to that of the buckling column. The problems that the assembly of the reflector is complicated, the working hours are wasted, the rework rejection rate is high and the like can be effectively solved.

Description

Backlight module and display terminal

Technical Field

The application relates to backlight unit technical field, especially relates to backlight unit and display terminal.

Background

With the continuous maturity and development of liquid crystal televisions, the competition of the industry is intensified, and each television manufacturer can reduce the cost and save the working hours to strive for the competitive advantage at any time through technical innovation. The liquid crystal display is classified into a side-type backlight and a direct-type backlight according to a backlight implementation manner, and the direct-type backlight has the advantages of low cost, simplicity in assembly and the like, and is widely used. The direct type liquid crystal display screen has two fixing modes of screw locking and double-sided tape attaching, wherein the screw fixing wastes time and labor, the double-sided tape fixing is troublesome in work return, the residual adhesive exists, and the rejection rate is high.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a backlight module and a display terminal, and the problems that the assembly of a reflector is complicated, the working hours are wasted, the rework rejection rate is high and the like can be effectively solved. The technical scheme is as follows:

in a first aspect, an embodiment of the present application provides a backlight module, which includes a back plate, a light bar and a reflector plate, where the light bar includes a circuit board and a lamp bead installed on the circuit board, and the circuit board is installed on the back plate; the reflector plate is arranged on the back plate, and a first through hole for the lamp bead to pass through is formed in the reflector plate; the circuit board is provided with a buckle, the reflector plate is further provided with a second through hole, and the buckle penetrates through the second through hole and is used for limiting the position of the reflector plate.

The backlight unit of the embodiment of the application, position through buckle restriction reflector plate, can laminate the setting between reflector plate installation back and the circuit board, prior art's reflector plate is located on circuit board and backplate through the double-sided tape subsides among the comparison, the reflector plate is under double-sided tape's pulling force effect, form corrugate height difference between circuit board and backplate, this scheme is only through the position of buckle restriction reflector plate, make buckle laminating circuit board setting, the difficult emergence unevenness's of reflector plate condition, be of value to and eliminate double-sided tape and cause the local unevenness of reflector plate and then cause whole backlight unit uneven influence of lighting and darkness.

In some embodiments, the buckle comprises a buckle column and a limiting part, and one end of the buckle column is fixedly arranged on the circuit board; the limiting part is arranged at one end, far away from the circuit board, of the buckling column, the outer diameter of the limiting part is larger than the outer diameter of the buckling column, and the inner diameter of the second through hole is smaller than the outer diameter of the limiting part and larger than or equal to the outer diameter of the buckling column.

Based on above-mentioned embodiment, the buckle post is the installation basis of spacing portion, and the external diameter of buckle post is less than or equal to the second through-hole, and when the installation, the buckle post can run through the second through-hole setting, and the external diameter of spacing portion is greater than or equal to buckle post external diameter, is bigger than the internal diameter of second through-hole promptly, and when the buckle post ran through the second through-hole, spacing portion can't run through the second through-hole, and then the position of restriction reflector plate realizes the installation of reflector plate.

In some embodiments, the limiting portion includes at least two limiting wings uniformly distributed at the end of the buckling column, and two adjacent limiting wings are arranged at intervals.

Based on the above embodiment, the arrangement of the at least two limiting wings enables the whole buckle to form a structure with a large end and a small end, so that the buckle column can penetrate through the second through hole, and the limiting part cannot penetrate through the second through hole.

In some of these embodiments, the retaining wings are resilient.

Based on above-mentioned embodiment, spacing wing has elasticity, operating personnel can press down spacing wing and make it be close to towards the buckle post, reduce the external diameter of spacing portion, and then the dismantlement of the reflector plate of being convenient for, need not to destroy the structure of buckle itself, the buckle can also continue to reuse, when installing the reflector plate, also only need press down spacing wing and make it be close to towards the buckle post, reduce the external diameter of spacing portion, and then make spacing portion can pass from the second through-hole of reflector plate smoothly, when no longer pressing down spacing wing, spacing wing resumes the state that initial external diameter is greater than the second through-hole internal diameter in order to restrict the position of reflector plate, can be under the circumstances of not destroying the reflector plate the ann of realization tear open, the operation is very simple, and convenient, and the buckle can reuse, also save material more.

In some embodiments, two surfaces of the reflector plate opposite to each other are respectively attached to the limiting part and the surface of the circuit board along a direction perpendicular to the surface of the circuit board.

Based on above-mentioned embodiment, the internal diameter of second through-hole is greater than or is equal to the external diameter of buckle post, and the skew takes place easily in the position of reflector plate, and the reflector plate in this scheme both with the laminating of circuit board and with spacing portion laminating, spacing portion and circuit board cooperation have a tight fixed effect of clamp to the reflector plate, are of value to the installation fastness and the stability of reinforcing reflector plate.

In some of these embodiments, the clasp is a transparent PC clasp.

Based on above-mentioned embodiment, the light that the lamp pearl sent can follow transparent PC buckle and pierce through, designs the buckle into transparent, can reduce the influence that causes the light path of light pearl, is difficult for producing the facula.

In some embodiments, the locking post is fixed on the circuit board by thermosetting adhesive.

Based on above-mentioned embodiment, utilize the thermosetting to glue the solidification fast, advantage that intensity is high fixes the buckle post on the circuit board through the thermosetting, and the installation of buckle is more firm, stable, and waits for the speed that the thermosetting glued solid phone is very fast, is of value to the equipment speed that improves whole backlight unit to a certain extent.

In some of them embodiments, the quantity of lamp pearl and buckle post is a plurality of, and along the lamp pearl direction of arranging, the buckle post is fixed to be set up between two adjacent lamp pearls.

Based on the embodiment, the buckle columns are arranged along the arrangement direction of the lamp beads, the arrangement of the buckles and the lamp beads is neat, and the whole backlight module is more attractive; the buckle post sets up between two adjacent lamp pearls, reduces the influence of buckle post to the lamp pearl.

In some of these embodiments, along the face direction of perpendicular to circuit board, buckle thickness is less than lamp pearl thickness.

Based on above-mentioned embodiment, the thickness of buckle is less than the thickness of lamp pearl, can reduce the influence of buckle to the lamp pearl light path.

In a second aspect, an embodiment of the present application provides a display terminal, including: the backlight module comprises the backlight module.

Based on the display terminal in the embodiment of the application, the display terminal with the backlight module has the advantages that the reflector plate is not prone to generating unevenness, and the influence of uneven brightness of the whole backlight module due to local unevenness of the reflector plate caused by double-sided adhesive tapes is favorably eliminated; meanwhile, the reflector plate can be installed and disassembled without damaging the reflector plate, the operation is very simple and convenient, the buckle can be repeatedly used, and materials are saved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a cross-sectional view of a backlight module according to an embodiment of the present application;

fig. 2 is a top view of a backlight module provided in an embodiment of the present application;

fig. 3 is a cross-sectional view of a backlight module according to another embodiment of the present application;

fig. 4 is a cross-sectional view of a backlight module according to another embodiment of the present application;

fig. 5 is a block diagram of a display terminal according to an embodiment of the present disclosure.

Reference numerals: 10. a display terminal; 100. a backlight module; 110. a back plate; 120. a light bar; 121. a circuit board; 122. a lamp bead; 130. a reflective sheet; 131. a first through hole; 132. a second through hole; 140. buckling; 141. a buckling column; 142. a limiting part; 1421. a limiting wing; 143. a base.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims.

Among the prior art, when straight following formula liquid crystal display's reflector plate passes through the screw lock and attaches, need use the instrument to ann tear open all screws at ann in-process of tearing open, the time is wasted relatively in the actual operation. And the reflector plate can be attached and fixed on the surface of the back plate through the double-sided adhesive tape by adopting an attaching installation mode of the double-sided adhesive tape. When the double-sided adhesive tape is arranged on the back plate, the reflecting sheet is pressed at the position where the double-sided adhesive tape is attached, so that the reflecting sheet is attached to the back plate through the double-sided adhesive tape, the height difference of about 1mm exists between the distance between the light bar and the reflecting sheet in the direction perpendicular to the surface of the back plate and the distance between the back plate and the reflecting sheet, and the double-sided adhesive tape is difficult to provide uniform and stable support for the reflecting sheet, so that the reflecting sheet is easy to generate uneven conditions, a backlight module is uneven in brightness, and the display effect of the display terminal is influenced; if when setting up the double faced adhesive tape on the lamp strip, press the reflector plate and make the reflector plate paste on the lamp strip through double faced adhesive tape, need use multistage double faced adhesive tape to paste in the lamp strip surface, troublesome poeration, this kind of mode can make the ann of reflector plate tear efficiency open and reduce undoubtedly. In addition, the reflecting sheet is attached by the double-sided adhesive tape, and the residual double-sided adhesive tape is easy to remain after the reflecting sheet is detached, so that the cleaning is troublesome and the recycling is difficult.

Referring to fig. 1 and fig. 2, in a first aspect, an embodiment of the present application provides a backlight module 100, including a back plate 110, a light bar 120 and a reflector 130 mounted on the back plate 110, where the light bar 120 includes a circuit board 121 and a light bead 122 mounted on the circuit board 121, the light bead 122 is electrically connected to the circuit board 121, and the circuit board 121 is mounted on the back plate 110; the reflector 130 is provided with a first through hole 131 for the lamp bead 122 to pass through; the circuit board 121 is provided with a buckle 140, the reflective sheet 130 is further provided with a second through hole 132, and the buckle 140 is disposed through the second through hole 132 to limit the position of the reflective sheet 130.

The backlight module 100 of the embodiment of the application, position through buckle 140 restriction reflector plate 130, reflector plate 130 can laminate the setting between installation back and the circuit board 121, reflector plate 130 is difficult for taking place unevenness's the condition, be of value to eliminate double-sided tape and cause reflector plate 130 local unevenness and then cause whole backlight module 100 to be bright dark inhomogeneous's influence, reflector plate 130 leads to reflector plate 130 to form the poor condition of height on circuit board 121 and backplate 110 easily through double-sided tape subsides in avoiding the correlation technique. The buckle 140 can be pre-assembled on the circuit board 121 and fixed on the back plate 110 together with the light bar 120, when the reflector plate 130 is installed, the first through hole 131 on the reflector plate 130 is accurately aligned with the lamp bead 122, and the second through hole 132 is accurately aligned with the buckle 140, so that the installation of the reflector plate 130 can be completed, the operation is convenient, and the assembly efficiency of the backlight module 100 is improved.

In some embodiments, the latch 140 includes a latch post 141 and a position-limiting portion 142, one end of the latch post 141 is fixedly disposed on the circuit board 121, the position-limiting portion 142 is disposed at an end of the latch post 141 away from the circuit board 121, an outer diameter of the position-limiting portion 142 is larger than an outer diameter of the latch post 141, and an inner diameter of the second through hole 132 is smaller than the outer diameter of the position-limiting portion 142 and is larger than or equal to the outer diameter of the latch post 141.

In some embodiments, the position-limiting portion 142 includes at least two position-limiting wings 1421 uniformly distributed at the end portion of the fastening post 141, and the two adjacent position-limiting wings 1421 are disposed at intervals, so that the two adjacent position-limiting wings 1421 can be mutually closed to enable the end portion of the fastening 140 to smoothly pass through the second through hole 132.

In some embodiments, the wing 1421 has elasticity, so that the wing 1421 can deform, thereby facilitating the assembly and disassembly of the reflective sheet 130 and facilitating the recycling of the backlight module 100.

The elastic limiting wing 1421 is arranged, so that an operator can extrude the limiting wing 1421 to axially draw the limiting wing 1421 towards the buckling column 141, the outer diameter of the limiting portion 142 is reduced, the reflector plate 130 can be conveniently disassembled, the structure of the buckle 140 does not need to be damaged, and the buckle 140 can be repeatedly used. When the reflector 130 is installed, the limiting wing 1421 is only required to be squeezed to axially retract toward the fastening post 141, so as to reduce the outer diameter of the limiting portion 142, and further the limiting portion 142 can smoothly pass through the second through hole 132 of the reflector 130, when the limiting wing 1421 is no longer pressed, the limiting wing 1421 returns to the initial state in which the outer diameter is larger than the inner diameter of the second through hole 132 to limit the position of the reflector 130, so that the reflector 130 can be installed and removed without damaging the reflector 130, the replacement process of the reflector 130 is simplified, the replacement efficiency of the reflector 130 is improved, and the operation is simple and convenient.

In some embodiments, when the inner diameter of the second through hole 132 is larger than the outer diameter of the latching post 141, in one case, referring to fig. 1, one end of the limiting wing 1421 is fixed at one end of the latching post 141 away from the circuit board 121, and the other ends of the at least two limiting wings 1421 are disposed close to the circuit board 121 and are disposed away from each other so that the outer diameter of the limiting portion 142 is larger than the inner diameter of the second through hole 132, and in another case, referring to fig. 3, one end of the limiting wing 1421 is fixed at one end of the latching post 141 away from the circuit board 121, and the other ends of the at least two limiting wings 1421 are disposed away from the circuit board 121 and are disposed away from each other so that the outer diameter of the limiting portion 142 is larger than the inner diameter of the second through hole 132.

In some embodiments, when the inner diameter of the second through hole 132 is equal to the outer diameter of the fastening post 141 (not shown), the reflector 130 is pressed to slightly deform the local reflector 130 at the periphery of the second through hole 132 and then is sleeved at the periphery of the fastening post 141, and the outer diameter of the limiting portion 142 is larger than the inner diameter of the second through hole 132, so that the reflector 130 is prevented from falling off the fastening post 140, the position of the reflector 130 is limited, and the reflector 130 is mounted. Preferably, on the basis that the restorable deformation of the reflector 130 is satisfied, the wall surfaces of the second through holes 132 and the surfaces of the fastening columns 141 are attached to each other, so that the surfaces of two adjacent fastening columns 141 can act on the wall surfaces of the second through holes 132 to further limit the position of the reflector 130, and the reflector 130 is fully flattened.

In some embodiments, one side of the limiting wing 1421 close to the second through hole 132 has an arc surface, when the limiting wing 1421 is folded toward the fastening column 141, the arc surface contacts with a wall surface of the second through hole 132, so as to have a certain guiding function, and when the limiting wing 1421 penetrates through the second through hole 132, the friction with the reflector 130 can be reduced, and the damage to the reflector 130 is reduced.

Referring to fig. 4, in some embodiments, a base 143 is disposed at an end of the latch post 141 away from the wing 1421, one surface of the base 143 is attached to and fixed on the circuit board 121, a cross-sectional area of the latch post 141 parallel to the surface of the circuit board 121 is smaller than an area of a surface of the base 143 contacting the circuit board 121, the base 143 and the latch post 141 are integrally formed, and a contact area between the latch 140 and the circuit board 121 is increased by the base 143, which is beneficial to enhancing the mounting firmness of the latch 121.

In some embodiments, two opposite surfaces of the reflective sheet 130 are respectively attached to the limiting portion 142 and the surface of the circuit board 121 along a direction perpendicular to the board surface of the circuit board 121, so that the limiting portion 142 and the circuit board 121 cooperate to clamp and fix the reflective sheet 130, so as to limit the position of the reflective sheet 130 in the direction perpendicular to the board surface of the circuit board 121, which is beneficial to enhancing the installation firmness and stability of the reflective sheet 130.

In some of these embodiments, buckle 140 is the transparent PC buckle, makes the spacing wing 1421 of buckle 140 tip can produce deformation and draw close each other, and the light that still is convenient for lamp pearl 122 to send in addition can follow transparent PC buckle and pierce through, reduces the influence that causes the light path of light pearl 122, is difficult for producing the facula.

In some embodiments, the fastening post 141 is fixed on the circuit board 121 by thermosetting adhesive, and by using the advantages of fast curing and high strength of the thermosetting adhesive, the fastening post 141 is fixed on the circuit board 121 by the thermosetting adhesive, so that the fastening of the fastening 140 is firmer and more stable, and the time for waiting for the thermosetting adhesive to fix the phone is shorter, which is beneficial to improving the assembling speed of the whole backlight module 100 to a certain extent.

In some of these embodiments, the quantity of lamp pearl 122 and buckle post 141 is a plurality of, and along lamp pearl 122 direction of arranging, buckle post 141 is fixed to be set up between two adjacent lamp pearls 122. The buckling columns 141 are arranged along the arrangement direction of the lamp beads 122, the buckles 140 and the lamp beads 122 are arranged in order, and the whole backlight module 100 is more attractive; the buckle post 141 is arranged between two adjacent lamp beads 122, and the influence of the buckle post 141 on the lamp beads 122 is reduced.

In some embodiments, the thickness of the clip 140 is smaller than the thickness of the bead 122 along the direction perpendicular to the surface of the circuit board 121. The thickness of buckle 140 is less than the thickness of lamp pearl 122, can reduce the influence of buckle 140 to lamp pearl 122 light path.

Referring to fig. 1 and 5, in a second aspect, an embodiment of the present application provides a display terminal 10, including: including the backlight module 100 of the above-described embodiment.

Based on the display terminal 10 in the embodiment of the present application, the display terminal 10 having the backlight module 100 described above, the reflector 130 is not prone to be uneven; meanwhile, the reflector plate 130 can be installed and removed without damaging the reflector plate 130, the operation is simple and convenient, the buckle 140 can be repeatedly used, and materials are saved.

According to the technical scheme processing backlight unit 100 in this application, show through the experimental result: 86 cun size's display terminal 10, the cost of carrying out the gum to reflector plate 130 approximately needs 1.5 yuan, adopt transparent PC buckle, because of buckle 140 can be directly accomplish the operation in step in the lamp strip factory, holistic cost can not exceed 1 yuan, and buckle 140 can reuse in addition, consequently, use buckle 140 to replace double-sided tape can effectively reduce whole backlight unit 100's cost, it has higher application advantage to be applied to display terminal 10 with backlight unit 100 that this application embodiment provided.

In the description of the present application, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.

Claims (10)

1. A backlight module, comprising:

a back plate;

the lamp strip comprises a circuit board and a lamp bead arranged on the circuit board, and the circuit board is arranged on the back plate;

the reflector plate is arranged on the back plate, and a first through hole for the lamp bead to pass through is formed in the reflector plate;

the circuit board is provided with a buckle, the reflector plate is further provided with a second through hole, and the buckle penetrates through the second through hole and is used for limiting the position of the reflector plate.

2. The backlight module according to claim 1, wherein the clip comprises:

one end of the buckling column is fixedly arranged on the circuit board;

the limiting part is arranged at one end, far away from the circuit board, of the buckling column, the outer diameter of the limiting part is larger than that of the buckling column, and the inner diameter of the second through hole is smaller than that of the limiting part and larger than or equal to that of the buckling column.

3. The backlight module as claimed in claim 2, wherein the position-limiting portion comprises at least two position-limiting wings uniformly distributed at the end of the fastening post, and two adjacent position-limiting wings are spaced apart from each other.

4. The backlight module as claimed in claim 3, wherein the limiting wings are elastic.

5. The backlight module according to claim 2, wherein two opposite surfaces of the reflector plate are respectively attached to the position-limiting portion and the surface of the circuit board along a direction perpendicular to the surface of the circuit board.

6. The backlight module of claim 1, wherein the clip is a transparent PC clip.

7. The backlight module as claimed in claim 2, wherein the fastening posts are fixed on the circuit board by thermosetting adhesive.

8. The backlight module according to claim 2, wherein the number of the lamp beads and the number of the buckling columns are multiple, and the buckling columns are fixedly arranged between two adjacent lamp beads along the arrangement direction of the lamp beads.

9. The backlight module as claimed in claim 1, wherein the thickness of the clip is smaller than the thickness of the bead along a direction perpendicular to the surface of the circuit board.

10. A display terminal, characterized in that it comprises a backlight module according to any one of claims 1 to 9.

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