CN113763820A - Support member of backlight module, preparation method of support member, backlight module and display device - Google Patents
Support member of backlight module, preparation method of support member, backlight module and display device Download PDFInfo
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- CN113763820A CN113763820A CN202111082980.0A CN202111082980A CN113763820A CN 113763820 A CN113763820 A CN 113763820A CN 202111082980 A CN202111082980 A CN 202111082980A CN 113763820 A CN113763820 A CN 113763820A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 87
- 229910052751 metal Inorganic materials 0.000 claims abstract description 87
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- 238000005452 bending Methods 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000002347 injection Methods 0.000 claims description 8
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- 238000002474 experimental method Methods 0.000 abstract description 9
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 229910052742 iron Inorganic materials 0.000 description 10
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D12/00—Producing frames
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Mechanical Engineering (AREA)
- Planar Illumination Modules (AREA)
Abstract
The disclosure provides a support member for a backlight module, a preparation method of the support member, the backlight module and a display device. The support member includes: the periphery of the metal frame is bent towards the surface of one side of the metal frame to form a bent part; and the rubber frame completely covers the bent part. The support piece for backlight unit through what the integration was made, no matter glue frame or metal frame all are the integration, do not carry out the segmentation and cut the groover design, and then do not need to set up the injecting glue hole among the feasible backlight unit, avoided backlight unit from the root to get into the problem of steam through the injecting glue hole in the test experiment to improve the reliability of product, promoted the competitiveness of product in market from the aspect of the quality.
Description
Technical Field
The disclosure relates to the technical field of display devices, and in particular to a support member of a backlight module, a preparation method of the support member, the backlight module and a display device.
Background
The requirement for the display screen in the correlation technique gradually increases, and the frame that requires backlight unit narrows gradually, leads to the indisputable glue in the backlight unit to be thinner and thinner. And because the backlight module is provided with the glue pulling hole, water vapor in the backlight module in a test experiment easily enters the backlight module through the glue pulling hole, and the reliability of the backlight module is reduced.
Disclosure of Invention
In view of this, the present disclosure provides a support member of a backlight module, a method for manufacturing the support member, the backlight module and a display device.
In a first aspect of the present disclosure, a support member of a backlight module is provided, including: the metal frame is bent towards one side surface of the metal frame to form a bent part; and the rubber frame completely covers the bent part.
In some embodiments, the bent portion is formed by one bending, and the bent portion forms an angle of 75-105 ° with the surface.
In some embodiments, the bent portion is formed by bending at least two times.
In some embodiments, a first height of the rubber frame relative to the surface is greater than a second height of the bending portion relative to the surface.
In some embodiments, the second height is 40% to 70% of the first height.
In some embodiments, the metal frame has a thickness of 0.05mm to 0.25mm, and at least a portion of the rubber frame covering the top of the bent portion has a width of 0.3mm to 0.5 mm.
In some embodiments, the glue frame comprises: a plurality of mounting grooves are arranged along one surface of the inner side of the rubber frame; each mounting slot is configured to mount an LED light bar assembly.
In some embodiments, the plurality of mounting slots comprises: a plurality of first mounting grooves with higher height and a plurality of second mounting grooves with lower height; the plurality of first mounting grooves and the plurality of second mounting grooves are arranged at intervals in sequence.
In some embodiments, the glue frame further comprises: a plurality of limiting grooves; the plurality of limiting grooves are configured to position a plurality of structurally different optical components respectively.
In a second aspect of the present disclosure, a method for preparing a supporting member of a backlight module is provided, where the supporting member includes a metal frame and a rubber frame, and the method includes: providing a metal plate, and bending the periphery of the metal plate towards one side surface of the metal plate by using a bending forming die to form the metal frame with a bending part; and injecting a colloid onto the bent part by using an injection mold to form the rubber frame completely covering the bent part.
In a third aspect of the present disclosure, a backlight module is provided, which includes the supporting member according to the first aspect of the present disclosure; and an optical assembly placed on the support.
In a fourth aspect of the present disclosure, a display device is provided, which includes the backlight module according to the third aspect of the present disclosure.
The support piece of the backlight module, the preparation method of the support piece, the backlight module and the display device comprise a metal frame and a rubber frame, wherein the periphery of the metal frame is bent towards the surface of one side of the metal frame to form a bent part, and the rubber frame can completely cover the bent part. Support piece for backlight unit through what the integration was made, no matter be gluey frame, metal frame or backlight unit's four sides and four fillets all imbed the integrated design, do not carry out the segmentation and cut the groover design, and then do not need to set up the injecting glue hole among the feasible backlight unit, avoided backlight unit to get into the problem of steam through the injecting glue hole in the test experiment from the root, thereby improved the reliability of product, promoted the competitiveness of product in the market in the aspect of the follow quality.
Drawings
In order to more clearly illustrate the present disclosure or the technical solutions in the prior art, the drawings needed for 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 the present disclosure, and other drawings can be obtained by those skilled in the art without inventive efforts.
Fig. 1 shows an exemplary structural diagram of a glue-iron assembly in the related art.
Fig. 2 illustrates an exemplary structural schematic of a support provided by an embodiment of the present disclosure.
Fig. 3 illustrates an exemplary cross-sectional side view of a long side of a support according to an embodiment of the present disclosure.
Fig. 4 shows an exemplary side view of a long side of a support according to an embodiment of the present disclosure.
Fig. 5 illustrates an exemplary cross-sectional side view of a short side of a support according to an embodiment of the present disclosure.
Fig. 6 illustrates an exemplary side view of a short side of a support according to an embodiment of the present disclosure.
Fig. 7 illustrates an exemplary partial front view of a top fillet of a support according to an embodiment of the present disclosure.
Fig. 8 illustrates an exemplary partial front view of a bottom chamfer of a support according to an embodiment of the present disclosure.
Fig. 9 illustrates an exemplary close-up view of a support according to an embodiment of the present disclosure.
Fig. 10 shows a schematic flow diagram of an exemplary method of making a support provided by embodiments of the present disclosure.
Fig. 11 illustrates an exemplary cross-sectional side view of one side of the backlight module in the longitudinal direction according to the embodiment of the disclosure.
Fig. 12 illustrates an exemplary cross-sectional side view of the backlight assembly on the opposite side in the long side direction according to an embodiment of the disclosure.
Fig. 13 illustrates a cross-sectional view in a short side direction of a backlight assembly according to an embodiment of the present disclosure.
Description of reference numerals:
100-supporting piece, 110-metal frame, 111-bending part, 1111-bending part first part, 1112-bending part second part, 120-rubber frame, 121-first limiting groove, 122-second limiting groove, 123-third limiting groove, 124-LED lamp flexible FPC mounting groove, 125-fourth limiting groove, 126-mounting groove, 1261-first mounting groove, 1262-second mounting groove, 127-avoiding part, 130-reflecting sheet, 140-light guide plate, 150-LED lamp strip component, 160-diffusing sheet, 170-brightness enhancement sheet, 180-shading rubber and 190-PET.
Detailed Description
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
It is to be noted that technical or scientific terms used in the present disclosure should have the ordinary meaning as understood by those having ordinary skill in the art to which the present disclosure belongs, unless otherwise defined. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
As described in the background art, the requirements for display screens in the related art are gradually increasing, and the frame of the backlight module is required to be gradually narrowed, so that the iron rubber in the backlight module becomes thinner and thinner. And because the backlight module is provided with the glue pulling hole, water vapor in the backlight module in a test experiment easily enters the backlight module through the glue pulling hole, and the reliability of the backlight module is reduced.
Fig. 1 shows an exemplary structural diagram of a glue-iron assembly in the related art.
Referring to fig. 1, the applicant found through research that in a conventional backlight module, plastic is heated, melted and injection-molded into a molded iron frame, the plastic and the iron frame are connected together through a glue pulling hole, the plastic and the iron frame are made of two different materials, and under different temperature and humidity environments, the expansion and contraction coefficients of the plastic in the glue pulling hole and the iron frame at the periphery of the plastic are different, so that a gap occurs between the plastic and the iron frame in the glue pulling hole of the backlight module in an experimental process. Moreover, the frame of the backlight module is smaller and smaller, the thickness of the rubber iron is thinner and thinner, and water vapor enters the backlight module easily through the gap between the plastic and the iron frame in an experiment, so that the abnormal display and other problems of the backlight module are caused.
As such, embodiments of the present disclosure provide a support member for a backlight module, including: the metal frame is bent towards one side surface of the metal frame to form a bent part; and the rubber frame completely covers the bent part.
The support piece of the backlight module, the preparation method of the support piece, the backlight module and the display device comprise a metal frame and a rubber frame, wherein the periphery of the metal frame is bent towards the surface of one side of the metal frame to form a bent part, and the rubber frame can completely cover the bent part. The support piece for backlight unit through what the integration was made, no matter glue frame or metal frame all are the integration, do not carry out the segmentation and cut the groover design, and then do not need to set up the injecting glue hole among the feasible backlight unit, avoided backlight unit from the root to get into the problem of steam through the injecting glue hole in the test experiment to improve the reliability of product, promoted the competitiveness of product in market from the aspect of the quality.
The following describes a support member of a backlight module provided in an embodiment of the present disclosure with specific embodiments.
Fig. 2 illustrates an exemplary structural schematic diagram of the support 100 provided by the embodiment of the present disclosure.
Referring to fig. 2, the metal frame 110 may be a metal plate, and the bent portion 111 is formed by bending a periphery of the metal plate toward one side surface of the metal plate by a bending mold. The bending portion 111 is completely covered by the plastic frame, wherein the projection of the supporting member 100 on the surface has two long sides and two short sides.
Fig. 3 illustrates an exemplary cross-sectional side view of a long side of the support 100, according to an embodiment of the present disclosure.
Referring to fig. 3, after the edge of the metal plate is bent once toward one side surface of the metal plate, a first portion 1111 of a bent portion is formed, wherein the first portion 1111 of the bent portion may form an angle of 75 ° to 105 ° with the first surface. Preferably, an included angle a between the first portion 1111 of the bent portion and the first surface may be a 90 ° angle, so as to increase stability of the first portion 1111 of the bent portion.
The edge of the metal plate is bent toward one side surface of the metal plate for a plurality of times, and then the second portion 1112 of the bent portion is formed. Referring to the second portion 1112 of the bent portion in fig. 3, the metal plate is bent three times, an angle between the first bent portion and the surface may be 75 ° to 105 °, an angle between the second bent portion and the first bent portion may be 75 ° to 105 °, and an extension line of the third bent portion and the surface may also be 75 ° to 105 °. The purpose of forming the second portion 1112 of the bent portion after being bent for multiple times is to enhance the overall connection strength of the metal frame 110 at the bent portion 111.
Further, two opposite side faces of the bending portion 111 are wrapped faces, the rubber frame 120 is tightly attached to the wrapped faces, the attaching face of the rubber frame 120 for wrapping the bending portion 111 is the wrapping face, since no pulling rubber hole is formed, the wrapping face and the wrapped faces are smooth surfaces, the two faces are tightly attached to each other, no gap or protrusion exists, water vapor is prevented from entering the rubber frame, the outer side surface (such as the surface indicated by the mark A in the figure 3 and the figure 5) of the rubber frame 120 is a smooth surface, and the generation of the gap can be avoided when the rubber frame contacts with other structures of the product. And need set up among the correlation technique and draw gluey hole and carry out the operation of moulding plastics, consequently glue between frame 120 and the metal frame 110 because the existence of drawing gluey hole, can be unevenness at the surface of both contacts, and then can't guarantee the inseparable laminating of the two, cause steam to get into backlight unit through unevenness's surface easily, and cause the reduction of product reliability.
Furthermore, since the second portion 1112 of the bent portion is bent for a plurality of times, and a plurality of bending angles exist, the distance between the inner surface (for example, the surface opposite to the surface indicated by the mark a in fig. 3) and the outer surface of the second portion 1112 of the bent portion is larger than the distance between the inner surface and the outer surface of the first portion 1111 of the bent portion, so that the thickness of the plastic frame 120 covering the second portion 1112 of the bent portion is thicker. The angle of each bent portion of the second portion 1112 of the bent portion may be a rounded corner or a chamfered corner, the surface of the bent portion may be a smooth curved surface or a flat surface, and the surfaces of the rubber frame 120 and the bent portion of the second portion 1112 are both smooth surfaces and are tightly attached to each other, so as to completely cover the bent portion 111. There is a certain distance between the top surface of the bending portion 111 and the top surface of the plastic frame 120 for covering the bending portion 111, so that the bending portion 111 is completely covered, and protection can be provided for the bending portion, and the problem of structural damage caused by the fact that the top surface of the bending portion 111 pierces the top surface of the plastic frame 120 due to external pressure in subsequent product processing or installation processes is avoided.
Because the metal frame 110 has a certain thickness, the thickness of the inner portion of the rubber frame 120 contacting the surface of the metal frame 110 is smaller than the outer portion of the rubber frame 120, and the thickness difference between the two is the thickness of the metal frame 110. Wherein, the bottom surface of the outer side portion of the rubber frame 120 is flush with the bottom surface of the metal frame 110.
Since the overall thickness of the support 100 is required to be thinner and thinner as the technology is developed, the thickness a of the metal frame 110 in this embodiment may be 0.05mm to 0.25 mm. Although the thickness of the metal frame 110 may be made thin, the structural strength of the metal frame 110 that is too thin is also affected, and therefore, the thickness a of the metal frame 110 may be selected to be 0.1mm in order to ensure the overall structural strength while making the metal frame 110 as thin as possible.
Similarly, the width of the rubber frame 120 for covering the bending part 111 is also made relatively thin. At least a part of the top of the covering and bending part 111 of the rubber frame 120 may have a width b of 0.3mm to 0.5 mm. For example, the top of the glue frame 120 for covering the first portion 1111 of the bent portion may have a width b of 0.3mm to 0.5 mm. It is understood that the width b of the rubber frame 120 of this portion may be selected to be 0.4mm for structural thickness and structural strength.
For the top of the plastic frame 120 covering the second part 1112 of the bent portion, since the second part 1112 of the bent portion is bent for a plurality of times, the width of the plastic frame 120 of this part should also be increased enough to completely cover the second part 11112 of the bent portion according to actual needs. The width c of the portion of the plastic frame 120 may be 0.8mm to 1.2mm, and taking the second portion 1112 of the bent portion formed after two times of bending in this embodiment as an example, the width c of the portion of the plastic frame 120 may be 1mm in order to take account of the structural thickness and the structural strength.
Fig. 4 shows an exemplary side view of a long side of the support 100 according to an embodiment of the present disclosure.
In the process of manufacturing the backlight module, different optical elements may be disposed on the supporting member 100, and therefore, the bent portion 111 should have a certain height with respect to the first surface of the metal frame 110.
Referring to fig. 4, in some embodiments, since the plastic frame 120 can completely cover the bent portion 111, a first height h1 of the plastic frame 120 relative to a side surface of the metal frame 110 is greater than a second height h2 of the bent portion 111 relative to a side surface of the metal frame 110.
Wherein, the first height h1 can be 0.5 mm-1 mm, and the second height h2 can be 40% -70% of the first height h 1. In order to ensure that the first height h1 and the second height h2 do not have redundant parts while meeting the requirements for placing the optical components, the first height h1 may be selected to be 0.7mm and the second height h2 may be selected to be 50% of the first height h1, i.e. 0.35 mm.
Fig. 5 illustrates an exemplary cross-sectional side view of a short side of a support according to an embodiment of the present disclosure.
Fig. 6 illustrates an exemplary side view of a short side of a support according to an embodiment of the present disclosure.
Referring to fig. 5 and 6, it can be seen from the side sectional views of the short sides of the supporter 100 that, in addition to the first portion 1111 where one long side is bent to form a bent portion, both short sides are also the first portions 1111 of the bent portion formed after being bent. Moreover, it can be seen that the rubber frame 120 completely covers the bending portion 111, and a side of the rubber frame 120 close to a back surface of one side surface of the metal frame 110 is on the same plane as the back surface, and in order to ensure the electrical conductivity of the metal frame 110, the back surface is not covered by the rubber frame 120.
Fig. 7 illustrates an exemplary partial front view of a top fillet of a support according to an embodiment of the present disclosure.
It can be seen from fig. 5 and 6 that there is a rounded corner between the bent portion 111 and one side surface of the metal frame 110. Referring to fig. 7, it can be seen that the first portion 1111 of the bending portion has a top fillet of the supporting member 100, and the fillet is provided to avoid the first portion 1111 of the bending portion from accidentally cutting the rubber frame 120 to generate a gap when performing injection molding, so as to avoid the influence of moisture entering the backlight module to the reliability of the backlight module in the experiment process.
Fig. 8 illustrates an exemplary partial front view of a bottom chamfer of a support according to an embodiment of the present disclosure.
Referring to fig. 8, the second portion 1112 of the bending portion is bent for multiple times, so that multiple bending corners are generated, the metal frame 110 and the rubber frame 120 at the corners can be made into round corners in fig. 7, and also can be made into chamfer corners in fig. 8, so as to form an embedded integrated structure, thereby avoiding accidental cutting injury to the backlight module and generating a gap when injection molding is performed, and further avoiding the influence of water vapor entering the backlight module and causing reliability to the backlight module in the experiment process.
Fig. 9 illustrates an exemplary close-up view of a support according to an embodiment of the present disclosure.
When the backlight module is manufactured, the supporting member 100 can be used to place a plurality of different optical components, and therefore, a plurality of limiting grooves are formed in the rubber frame 120 to position the plurality of optical components. The first limiting groove 121 is used for positioning and limiting the long sides of the backlight brightness enhancement film and the diffusion film material; the second limiting groove 122 is used for positioning and limiting the long sides of the backlight light guide plate and the reflector plate; the third limiting groove 123 is used for positioning the backlight brightness enhancement film, the diffusion sheet, the light guide plate and the reflector fillet to prevent the backlight brightness enhancement film, the diffusion sheet, the light guide plate and the reflector fillet from being damaged due to displacement; the LED lamp flexible FPC mounting groove 124 is a clearance area for placing the LED lamp flexible FPC; the fourth limiting groove 125 is a boss of the rubber frame 120, and is used for positioning and limiting the top of the light guide plate to prevent the light guide plate from colliding with the LED light bar assembly; the mounting groove 126 is used for placing an LED light bar assembly and is disposed on the short side of the bent portion where the second portion 1112 is located, wherein the mounting groove 126 is configured to have different lengths, and is respectively provided with a plurality of first mounting grooves 1261 with higher heights and a plurality of second mounting grooves 1262 with lower heights, so as to optimize heat dissipation of the LED light bar assembly; the avoiding part 127 is arranged on the outer frame of the fillet of the rubber frame 120 and used for limiting and positioning the position of the backlight module in the display device and preventing the backlight module from moving in the casing to cause collision and damage.
The support piece for the backlight module and the preparation method thereof, the backlight module and the display device provided by the embodiment of the disclosure comprise a metal frame and a rubber frame, wherein the periphery of the metal frame is bent towards the surface of one side of the metal frame to form a bent part, and the rubber frame can completely cover the bent part. The support piece for backlight unit through what the integration was made, no matter glue frame or metal frame all are the integration, do not carry out the segmentation and cut the groover design, and then do not need to set up the injecting glue hole among the feasible backlight unit, avoided backlight unit from the root to get into the problem of steam through the injecting glue hole in the test experiment to improve the reliability of product, promoted the competitiveness of product in market from the aspect of the quality.
Fig. 10 shows a schematic flow diagram of an exemplary method of making a support provided by embodiments of the present disclosure.
Based on the same inventive concept, referring to fig. 10, an embodiment of the present disclosure further provides a method for manufacturing a supporting member for a backlight module, which specifically includes the following steps:
s1002: providing a metal plate, and bending the periphery of the metal plate towards one side surface of the metal plate by using a bending forming die to form the metal frame with a bending part.
S1004: and injecting a colloid onto the bent part by using an injection mold to form the rubber frame completely covering the bent part.
For step S1002, preparing the metal frame portion in the support may include the following steps:
s10021: the whole roll of metal plate with the thickness of a can be subjected to slitting treatment by a cutting machine, and the metal plate corresponding to the width of the backlight monomer is cut;
s10022: feeding the metal plate subjected to splitting treatment into a bending forming die, performing stamping, edge folding and bending on the metal frame, and shaping the metal frame into a metal frame semi-finished product meeting the overall structural requirement of the backlight module, wherein the bending forming die can be specially designed according to a supporting piece integrated drawing so as to meet the requirement that two long edges and a top short edge of the metal frame are bent once and a bottom short edge is bent for multiple times;
s10023: carrying out plasma cleaning on the bent metal frame;
s10024: shaping flatness processing is carried out on the bent part and the back plate of the metal frame through special shaping equipment;
s10025: performing a laser engraving mark process on the metal frame;
s10026: performing secondary shaping flatness treatment on the bent part and the back plate;
s10027: carrying out secondary plasma cleaning on the metal frame;
s10028: and (5) carrying out appearance and structure tests on the metal frame, and packaging to obtain the metal frame with the bending part.
For step S1004, preparing the rubber frame portion in the supporting member may include the following steps:
s10041: placing the metal frame obtained in the step S1002 in an injection mold, wherein the injection mold can realize that the plastic can be tightly injected at the bent part of the metal frame after being melted so as to completely wrap the bent part;
s10042: putting the solid plastic particles into an injection molding machine, and melting the solid plastic particles into liquid at high temperature;
s10043: the molten plastic enters the injection mold in the step S10041 through a runner of the injection molding machine;
s10044: combining the molten plastic and the metal frame in an injection mold to form a semi-finished product of the support piece;
s10045: cooling the semi-finished product of the support in an injection mold, and taking out the semi-finished product of the support for deburring;
s10046: cleaning the semi-finished product of the support by plasma;
s10047: carrying out flat shaping treatment on the semi-finished product of the support by using shaping equipment;
s10048: carrying out secondary cleaning treatment on the semi-finished product of the supporting piece through plasma;
s10049: and (4) carrying out appearance and structure tests on the semi-finished product of the support piece, and packaging to obtain the support piece comprising the metal frame and the rubber frame.
It should be noted that the method of the embodiments of the present disclosure may be executed by a single device, such as a computer or a server. The method of the embodiment can also be applied to a distributed scene and completed by the mutual cooperation of a plurality of devices. In such a distributed scenario, one of the devices may only perform one or more steps of the method of the embodiments of the present disclosure, and the devices may interact with each other to complete the method.
It should be noted that the above describes some embodiments of the disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments described above and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Based on the same inventive concept, the embodiment of the present disclosure further provides a backlight module, which includes a supporting member for the backlight module and an optical assembly disposed on the supporting member.
Fig. 11 illustrates an exemplary cross-sectional side view of one side of the backlight module in the longitudinal direction according to the embodiment of the disclosure.
Fig. 12 illustrates an exemplary cross-sectional side view of the backlight assembly on the opposite side in the long side direction according to an embodiment of the disclosure.
Referring to fig. 11 and 12, the optical components in the assembly structure of the backlight module are sequentially stacked on the support member 100 from bottom to top. In this embodiment, the optical assembly may specifically include a reflective sheet 130, a light guide plate 140, an LED light bar assembly 150, a diffusion sheet 160, a brightness enhancement sheet 170, a light shielding adhesive 180, and a PET 190. The LED light bar assembly can be manufactured by welding an LED lamp on a flexible FPC substrate, the brightness enhancement film 170, the diffusion film 160 and the reflection sheet 130 can be manufactured into a single part by cutting, the light guide plate 140 is manufactured into the single part by module injection molding, and the shading adhesive 180 can be punched into the single part by a steel die.
The stacking structure of the backlight module comprises a support member 100, a reflector sheet 130, a light guide plate 140, an LED light bar assembly 150, a diffusion sheet 160, a brightness enhancement sheet 170, a light shielding adhesive 180 and a PET190 in sequence. The specific assembly process may include: adhering the LED light bar assembly 150 to the top of the light guide plate 140 to form a semi-finished product, placing the support 100 on an assembling machine platform, placing the lower surface of the reflector plate 130 on the first surface of the metal frame 110, placing the LED light bar assembly on the upper surface of the reflector plate 130 on the semi-finished product of the light guide plate, sequentially placing the diffusion sheet 160 and the brightness enhancement sheet 170 on the light guide plate 140, attaching the shading glue 180 to the upper surface of the brightness enhancement sheet 170 and the exposed first surface of the metal frame 110, and attaching the support PET190 to the shading glue 180 to form a finished backlight module.
Referring to fig. 11, it can be seen that the second portion 1112 of the bent portion is close to the LED light bar assembly 150, and since most of other optical assemblies are plate-shaped structures, two long sides and a top short side far away from the LED light bar assembly 150 are the first portion 1111 of the bent portion, so as to avoid damaging the optical assemblies of the plate-shaped structures.
Fig. 13 illustrates a cross-sectional view in a short side direction of a backlight assembly according to an embodiment of the present disclosure.
Referring to fig. 13, it can be seen that the optical components of the plate-like structure are sequentially placed on the first surface of the metal frame 110, and the periphery of the optical components is surrounded by the rubber frame 120 and protected and supported by the rubber frame 120. The light shielding adhesive 180 is attached to a portion of the first surface of the metal frame 110 where the optical component is not located, so as to prevent the exposed first surface portion from affecting the performance of the backlight module.
Based on the same inventive concept, the embodiment of the disclosure further provides a display device, which comprises the backlight module.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the present disclosure, features in the above embodiments or in different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of the different aspects of the present disclosure as described above, which are not provided in detail for the sake of brevity.
The present disclosure is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalents, improvements, and the like that may be made within the spirit and principles of the disclosure are intended to be included within the scope of the disclosure.
Claims (12)
1. A support member of a backlight module, comprising:
the metal frame is bent towards one side surface of the metal frame to form a bent part; and
and the rubber frame completely covers the bent part.
2. The support member according to claim 1, wherein the bent portion is formed by one bending, and the bent portion forms an angle of 75 ° to 105 ° with the surface.
3. The support according to claim 1, wherein the bent portion is formed by at least two bending operations.
4. The support according to any one of claims 1 to 4, wherein a first height of the rubber frame relative to the surface is greater than a second height of the bent portion relative to the surface.
5. The brace of claim 4, wherein the second height is 40% to 70% of the first height.
6. The supporting member according to claim 5, wherein the metal frame has a thickness of 0.05mm to 0.25mm, and at least a portion of the rubber frame covering the top of the bent portion has a width of 0.3mm to 0.5 mm.
7. The support of claim 1, wherein the glue frame comprises: a plurality of mounting grooves are arranged along one surface of the inner side of the rubber frame; each mounting slot is configured to mount an LED light bar assembly.
8. The support member as claimed in claim 7, wherein the plurality of mounting slots comprise: a plurality of first mounting grooves with higher height and a plurality of second mounting grooves with lower height; the plurality of first mounting grooves and the plurality of second mounting grooves are arranged at intervals in sequence.
9. The support member of claim 1, wherein the glue frame further comprises: a plurality of limiting grooves; the plurality of limiting grooves are configured to position a plurality of structurally different optical components respectively.
10. A preparation method of a support member of a backlight module is characterized in that the support member comprises a metal frame and a rubber frame, and the method comprises the following steps:
providing a metal plate, and bending the periphery of the metal plate towards one side surface of the metal plate by using a bending forming die to form the metal frame with a bending part; and
and injecting a colloid onto the bent part by using an injection mold to form the rubber frame completely covering the bent part.
11. A backlight module, comprising:
a support member according to any one of claims 1-9; and
an optical assembly disposed on the support.
12. A display device comprising the backlight module according to claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111082980.0A CN113763820A (en) | 2021-09-15 | 2021-09-15 | Support member of backlight module, preparation method of support member, backlight module and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111082980.0A CN113763820A (en) | 2021-09-15 | 2021-09-15 | Support member of backlight module, preparation method of support member, backlight module and display device |
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| CN113763820A true CN113763820A (en) | 2021-12-07 |
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| CN202111082980.0A Pending CN113763820A (en) | 2021-09-15 | 2021-09-15 | Support member of backlight module, preparation method of support member, backlight module and display device |
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