CN115424516A - Backlight module - Google Patents
Backlight module Download PDFInfo
- Publication number
- CN115424516A CN115424516A CN202211208021.3A CN202211208021A CN115424516A CN 115424516 A CN115424516 A CN 115424516A CN 202211208021 A CN202211208021 A CN 202211208021A CN 115424516 A CN115424516 A CN 115424516A
- Authority
- CN
- China
- Prior art keywords
- protective film
- orthographic projection
- backlight module
- optical
- emitting surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 112
- 230000001681 protective effect Effects 0.000 claims abstract description 63
- 239000012790 adhesive layer Substances 0.000 claims description 39
- 239000010410 layer Substances 0.000 claims description 14
- -1 polyethylene terephthalate Polymers 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 238000002834 transmittance Methods 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 14
- 235000009537 plain noodles Nutrition 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 101
- 238000010586 diagram Methods 0.000 description 10
- 239000004698 Polyethylene Substances 0.000 description 9
- 229920000573 polyethylene Polymers 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000007689 inspection Methods 0.000 description 6
- 239000012788 optical film Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
Images
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B17/00—Methods preventing fouling
- B08B17/02—Preventing deposition of fouling or of dust
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The application relates to the technical field of display, and the embodiment of the application provides a backlight module. The backlight module at least comprises a module body, a bonding layer and an optical protective film, wherein the optical protective film is arranged on one side of the light-emitting surface in a covering mode by means of the bonding layer, and the bonding layer is arranged around the outline of the light-emitting surface, so that the optical protective film and the bonding layer can jointly prevent dust or dirt from entering the light-emitting surface, and the light-emitting surface of the module body is protected. The optical protective film has optical characteristics and forms a gap with the light-emitting surface, so that the appearance of the backlight module can be checked without tearing off the optical protective film. From this, the backlight unit that this application embodiment provided when can protecting the plain noodles of module body, reduces because of tearing go into dirt or dirty risk that optical protection film brought.
Description
Technical Field
The application relates to the technical field of display, in particular to a backlight module.
Background
In the related art, before assembling the backlight module, the backlight module needs to be protected from dust. When the inspection backlight unit outward appearance, need tear dustproof protection architecture, lead to appearing going into dirt or dirty situation easily for the inspection process is difficult to go on.
Disclosure of Invention
Accordingly, there is a need for a backlight module for facilitating the inspection of the backlight module.
The application provides a backlight module, include:
the module body is provided with a light-emitting surface;
the bonding layer is arranged on the light emitting surface; and
the optical protective film is covered on one side of the light-emitting surface by virtue of the bonding layer, and a gap is formed between the optical protective film and the light-emitting surface;
the surface parallel to the light-emitting surface is a reference surface;
the outline of the orthographic projection of the bonding layer on the reference surface and the outline of the orthographic projection of the light-emitting surface on the reference surface are superposed with each other;
and the orthographic projection of the optical protection film on the reference surface covers the orthographic projection of the light emergent surface on the reference surface.
In one embodiment, the size of the optical protective film in the thickness direction is not less than 0.3 mm.
In one embodiment, the optical protective film has a penetration degree of less than 80%; and/or
The haze of the optical protective film is more than 3%.
In one embodiment, the material of the optical protection film comprises polyethylene terephthalate.
In one embodiment, the orthographic projection of the optical protective film on the reference surface covers the orthographic projection of the adhesive layer on the reference surface.
In one embodiment, a first distance is formed between the outline of the orthographic projection of the optical protection film on the reference surface and the outline of the orthographic projection of the adhesive layer on the reference surface.
In one embodiment, the module body comprises a frame body and a module main body arranged in the frame body, and the light-emitting surface is formed on the exposed surface of the module main body;
a step part is arranged on the inner wall of the frame body, the optical protective film is positioned at the step part along a first direction, and the bonding layer is arranged in an area formed between the optical protective film and the light emergent surface;
the first direction is perpendicular to the light emitting surface.
In one embodiment, the stepped part has a first positioning surface and a second positioning surface connected with the first positioning surface;
the first positioning surface is used for positioning the optical protective film in the first direction, and the second positioning surface is used for positioning the optical protective film in the second direction;
the second direction is perpendicular to the first direction and parallel to the light emitting surface.
In one embodiment, an outer contour of an orthographic projection of the adhesive layer on the reference surface and an inner contour of an orthographic projection of the frame body on the reference surface coincide with each other.
In one embodiment, the optical protective film comprises a main body part and a tearing part connected with the main body part;
the orthographic projection of the main body part on the reference surface covers the orthographic projection of the light emitting surface on the reference surface;
at least part of the orthographic projection of the tearing part on the reference surface is positioned outside the orthographic projection of the module body on the reference surface.
In one embodiment, a second distance is formed between the orthographic outer contour of the tearing part on the reference surface and the orthographic outer contour of the module body on the reference surface;
the size of the second distance is greater than or equal to 5 mm.
In one embodiment, the main body portion and the tearing portion are of an integral structure.
In one embodiment, the adhesive layer is a double-sided adhesive tape.
In the backlight module, the backlight module at least comprises a module body, the bonding layer and the optical protection film, the optical protection film is covered on one side of the light-emitting surface by the bonding layer, and the bonding layer is arranged around the outline of the light-emitting surface, so that the optical protection film and the bonding layer can jointly prevent dust or dirt from entering the light-emitting surface so as to protect the light-emitting surface of the module body. The optical protective film has optical characteristics and forms a gap with the light-emitting surface, so that the appearance of the backlight module can be checked without tearing off the optical protective film. From this, backlight unit that this application embodiment provided when can protecting the play plain noodles of module body, reduces because of tearing the income dirt or dirty risk that optical protection film brought.
Additional aspects and advantages of embodiments of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the present application.
Drawings
FIG. 1 is a schematic view of a backlight module according to an embodiment of the related art;
FIG. 2 is a schematic view of a backlight module according to an embodiment of the present application;
FIG. 3 is a schematic diagram illustrating a projection relationship of parts in a backlight module according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural diagram of a backlight module according to another embodiment of the present application;
FIG. 5 is a schematic diagram illustrating a projection relationship of a part of components in a backlight module according to another embodiment of the present disclosure;
FIG. 6 is an enlarged view of a portion of the structure shown at A in FIG. 4;
FIG. 7 is a schematic view illustrating a structure of a backlight module according to another embodiment of the present application;
FIG. 8 is a schematic diagram illustrating a projection relationship of a portion of a backlight module according to another embodiment of the present disclosure.
Notation of elements for simplicity:
10: module body 11: first side
20: adhesive tape 30: first polyethylene film
40: second polyethylene film 50: release film
100: the module body 101: light emitting surface
110: frame 111: step part
111a: first positioning surface 111b: second positioning surface
120: the module main body 200: adhesive layer
300: optical protective film 310: main body part
320: tearing part
h: first dimension d1: first pitch
d2: second pitch
T1: first profile T2: second profile
T3: third profile T4: fourth profile
T5: fifth profile T6: sixth profile
W1: first projection W2: second projection
W3: third projection
R: reference plane
F1: first direction F2: second direction
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth to provide a thorough understanding of embodiments of the present application. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application. The embodiments of this application can be implemented in many different ways than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the invention and therefore the embodiments of this application are not limited to the specific embodiments disclosed below.
It is to be understood that the terms "first," "second," and the like as used herein may be used herein to describe various terms of art, and are not to be construed as indicating or implying relative importance or implicit to a number of technical features indicated. However, these terms are not intended to be limiting unless specifically stated. These terms are only used to distinguish one term from another. In the description of the embodiments of the present application, "a plurality" or "a plurality" means at least two, e.g., two, three, etc., unless specifically defined otherwise.
In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.
In the description of the embodiments of the present application, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the first and second features, or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser level than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
FIG. 1 is a schematic view illustrating a structure of a backlight module according to an embodiment of the related art; for convenience of explanation, only the contents related to an embodiment of the related art are shown.
Referring to fig. 1, in an embodiment of the related art, a backlight module is provided, which includes a module body 10010, a tape 20 and a first polyethylene film 30 are disposed on a first surface 11 of the module body 10010, a release film 50 is further disposed on the tape 20, and a second polyethylene film 40 is wrapped outside the module body 10010. The inner protection is achieved by providing a first polyethylene film 30 on the first face 11, and the second polyethylene film 40 is wrapped outside the module body 10010 to achieve the outer protection.
The inventor of the present application has noticed that, if the above-mentioned protective package is adopted, the first polyethylene film 30 and the second polyethylene film 40 need to be torn off to confirm whether the first surface 11 of the module body 10010 is abnormal when the backlight module is inspected. In this process, dust or other impurities attached to the second polyethylene film 40 may fall into the first surface 11 of the module body 10010, and it is difficult to distinguish whether the dust or other impurities on the first surface 11 of the module body 10010 are caused by poor appearance or by tearing off the film, so that the inspection process is difficult to perform, and the backlight module is not convenient to inspect.
In order to examine backlight unit for a long time, this application inventor finds through the research, can be through changing protective structure, when can realizing the safeguard effect, avoid causing the first face 11 of module body 10010 unusual because of tearing off the film. Specifically, the tearing process can be avoided by improving the material of the protective structure and the matching form between the protective structure and the first surface 11.
The backlight module provided by the embodiment of the application is described below with reference to the related drawings and some embodiments.
FIG. 2 is a schematic structural diagram of a backlight module according to an embodiment of the present application; FIG. 3 is a schematic diagram illustrating a projection relationship of some components in a backlight module according to an embodiment of the disclosure; for convenience of explanation, only matters related to the embodiments of the present application are shown.
In some embodiments, referring to fig. 2 and 3, the present application provides a backlight module including a module body 100, an adhesive layer 200, and an optical protection film 300. The module body 100 has a light emitting surface 101. The adhesive layer 200 is disposed on the light emitting surface 101. The optical protection film 300 is disposed on one side of the light emitting surface 101 through the adhesive layer 200, and forms a gap with the light emitting surface 101. Wherein, the surface parallel to the light emitting surface 101 is a reference surface R. The outline of the orthographic projection of the adhesive layer 200 on the reference plane R is a first outline T1, the outline of the orthographic projection of the light-emitting surface 101 on the reference plane R is a second outline T2, and the first outline T1 and the second outline T2 are overlapped with each other. The orthographic projection of the optical protection film 300 on the reference plane R covers the orthographic projection of the light emitting surface 101 on the reference plane R.
The module body 100 includes a frame 110, a back plate, a plurality of stacked optical films, a light source, and the like, wherein the plurality of optical films are fixed between the frame 110 and the back plate (not shown). The module body 100 may be used to supply a light source to the display device, so that the display device can normally display an image. Alternatively, the optical film may include films such as an upper diffusion sheet, a prism sheet, a lower diffusion sheet, a light guide plate, a reflection sheet, and the like. The frame body 110 may be a rubber frame, and the back plate may be an aluminum alloy. Of course, the frame body 110 and the back plate may also be made of other materials, and may be set according to actual use conditions, which is not particularly limited in the embodiment of the present application.
The adhesive layer 200 is an adhesive member that can fix the optical protective film 300 and the module body 100 together. Since the outline of the orthographic projection of the adhesive layer 200 on the reference plane R and the outline of the orthographic projection of the light emitting surface 101 on the reference plane R coincide with each other, the adhesive layer 200 can prevent impurities such as dust from entering the light emitting surface 101 from the side. Even if impurities such as dust enter the side surface of the adhesive layer 200, the impurities are stuck by the viscosity of the adhesive layer 200 and cannot enter the light emitting surface 101.
The optical protective film 300 is a film material having optical properties. The optical protection film 300 is disposed opposite to the light emitting surface 101, so that impurities such as dust can be prevented from entering the light emitting surface 101 from the opposite side of the light emitting surface 101. Since the optical protection film 300 is fixed on one side of the light emitting surface 101 by the adhesive layer 200, the adhesive layer 200 has a certain thickness, so that the optical protection film 300 and the light emitting surface 101 are spaced and independent from each other. Therefore, the optical protection film 300 not only can protect the light emitting surface 101, but also has optical properties and forms a gap with the light emitting surface 101, so that whether impurities such as dust exist on the light emitting surface 101 can be conveniently checked, and further, the optical protection film 300 does not need to be torn off in the checking process. Furthermore, since the optical protection film 300 is not removed, it is avoided that a portion of the film layer remains on the light emitting surface 101, which causes the light emitting surface 101 to be defective.
By providing the optical protection film 300 and the adhesive layer 200, dust or dirt can be prevented from entering the light-emitting surface 101 together, so as to protect the light-emitting surface 101 of the module body 100. The optical protection film 300 is coated on the side of the adhesive layer 200 facing the optical protection film 300, so that dust can be prevented from adhering to the side of the adhesive layer 200 facing the optical protection film 300. The optical protection film 300 has optical characteristics and forms a gap with the light-emitting surface 101, so that the appearance of the backlight module can be checked without removing the optical protection film 300. Therefore, the backlight module provided by the embodiment of the application can protect the light-emitting surface 101 of the module body 100, and meanwhile, reduces the risk of dust or dirt entering due to tearing off the optical protection film 300. Meanwhile, because the protective structure in the embodiment of the present application only includes the optical protection film 300 and the adhesive layer 200, the production efficiency of protecting the module body 100 on the production line can be improved, and the adhesive layer 200 layering risk generated when the release film is torn off in the related embodiments can also be avoided.
In order to improve the dust-proof effect, in some embodiments, referring to fig. 2, the dimension of the optical protection film 300 in the thickness direction (i.e., the first direction F1 illustrated in the figure) is a first dimension h, and the first dimension h is not less than 0.3 mm. Through the design of the first dimension h of the optical protection film 300, the optical protection film 300 can keep certain stiffness, and the dustproof performance is prevented from being reduced due to deformation caused by poor stiffness.
To avoid false positives during inspection, in some implementations, the optical protective film 300 has a penetration of less than 80%; and/or the haze of the optical protective film 300 is greater than 3%. That is, the optical parameters of the optical protective film 300 can be designed to satisfy the required optical conditions, so that the risk of erroneous judgment in the inspection without peeling can be reduced.
In some embodiments, the material of the optical protective film 300 includes polyethylene terephthalate. Because the polyethylene terephthalate has excellent physical and mechanical properties in a wider temperature range, the long-term use temperature can reach 120 ℃, the electric insulation property is excellent, and the polyethylene terephthalate has certain creep resistance, fatigue resistance, friction resistance and dimensional stability. Therefore, the dustproof performance can be prevented from being reduced due to deformation caused by poor stiffness, the required optical conditions can be met, and the backlight module can be conveniently inspected.
In order to further enhance the protection effect, in some embodiments, with reference to fig. 3 in combination with fig. 2, an orthographic projection of the optical protection film 300 on the reference surface R covers an orthographic projection of the adhesive layer 200 on the reference surface R. That is, the optical protective film 300 can cover the adhesive layer 200. Thus, a certain size of the optical protective film 300 can be ensured to improve the dustproof effect.
Fig. 4 is a schematic structural diagram of a backlight module according to another embodiment of the present application; FIG. 5 is a schematic diagram illustrating a projection relationship of some components in a backlight module according to another embodiment of the present disclosure; for convenience of explanation, only matters related to the embodiments of the present application are shown.
In some embodiments, with continued reference to fig. 4 and 5, an outline of an orthogonal projection of the optical protection film 300 on the reference plane R is a third outline T3, and a first distance d1 is formed between the third outline T3 and the first outline T1. In particular to other embodiments, as shown in fig. 2 and 3, the third profile T3 and the first profile T1 coincide with each other.
Thus, the size of the optical protective film 300 can be flexibly set according to actual use requirements, so that the dustproof effect is improved.
In order to facilitate positioning of the optical protection film 300, in some embodiments, referring to fig. 4, the module body 100 includes a module main body 120 (i.e., a plurality of optical films illustrated in the foregoing embodiments) disposed in a frame 110. The exposed surface of the module body 120 forms a light emitting surface 101. The frame 110 has a step 111 on an inner wall thereof, the optical protective film 300 is positioned on the step 111 along the first direction F1, and the adhesive layer 200 is disposed in a region formed between the optical protective film 300 and the light emitting surface 101. The first direction F1 is perpendicular to the light emitting surface 101.
By providing the step portion 111, the optical protection film 300 can be positioned, and the optical protection film 300 is prevented from touching the light emitting surface 101 when being attached to the module body 100. Meanwhile, the optical protective film 300 can be positioned on the step part 111 in a preset manner, so that skew can be avoided, and the protection effect is further improved.
FIG. 6 is a schematic view of a portion of the enlarged structure at A in FIG. 4; for convenience of explanation, only matters related to the embodiments of the present application are shown.
Referring to fig. 6 in combination with fig. 4, in some embodiments, the step portion 111 has a first positioning surface 111a and a second positioning surface 111b connected to the first positioning surface 111 a. The first positioning surface 111a is used for positioning the optical protection film 300 in the first direction F1, and the second positioning surface 111b is used for positioning the optical protection film 300 in the second direction F2. The second direction F2 is perpendicular to the first direction F1 and parallel to the light emitting surface 101.
When the step portion 111 is formed around the inner wall of the frame 110, the second positioning surface 111b positions the optical protective film 300 in the circumferential direction of the optical protective film 300. The projection relation diagram in fig. 5 illustrates a case where the second positioning surface 111b positions the optical protective film 300 in the circumferential direction of the optical protective film 300. That is, the second direction F2 is a circumferential direction of the optical protective film 300. Of course, the specific structural form of the step portion 111 may be designed according to the use requirement as long as the required positioning can be achieved, and the embodiment of the present application does not specifically limit this.
In this manner, by using the first positioning surface 111a and the second positioning surface 111b of the stepped portion 111, the optical protective film 300 can be positioned in both the first direction F1 and the second direction F2. In the case where the optical protective film 300 can be positioned by the first positioning surface 111a and the second positioning surface 111b, the optical protective film 300 can be more stably placed on the step portion 111 and fixed to the light emitting surface 101 from one side by the adhesive layer 200. Since the stability of the optical protective film 300 is enhanced, the protective effect can be further improved.
With continued reference to fig. 4 and 5 in conjunction with fig. 2 and 3, in some embodiments, an orthographic outer contour (i.e., the first contour T1) of the adhesive layer 200 on the reference plane R and an orthographic inner contour (i.e., the fourth contour T4) of the frame body 110 on the reference plane R coincide with each other. That is, the adhesive layer 200 is disposed to abut against the inner wall of the frame 110. Thus, impurities such as dust can be prevented from entering between the adhesive layer 200 and the frame body 110, and the dust-proof effect is more effectively improved.
The present inventors further noticed that, since the release film needs to be torn off from the four sides in one embodiment of the related art, the tape is easily delaminated due to initial force or careless pulling.
FIG. 7 is a schematic view of a backlight module according to another embodiment of the present application; FIG. 8 is a schematic diagram illustrating a projection relationship of some components in a backlight module according to another embodiment of the present disclosure; for convenience of explanation, only matters related to the embodiments of the present application are shown.
In order to further avoid the risk of delamination of the adhesive layer 200, in some embodiments, referring to fig. 7 and 8, the optical protective film 300 includes a main body portion 310 and a tearing portion 320 connected to the main body portion 310. The orthographic projection (i.e., the first projection W1) of the main body portion 310 on the reference plane R covers the orthographic projection (i.e., the second projection W2) of the light emitting surface 101 on the reference plane R. At least a part of the orthographic projection (i.e., the third projection W3) of the tearing portion 320 on the reference surface R is positioned outside the orthographic projection of the module body 100 on the reference surface R. That is, the main body 310 is located on the light emitting surface 101, and at least a portion of the peeling portion 320 extends out of the module body 100.
By providing an optical protective film 300 and providing a tear-off portion 320 similar to a pull tab on the optical protective film 300, the starting end of the tear-off portion 320 is not the starting end of the adhesive layer 200, so that the risk of delamination at the starting end of the adhesive layer 200 can be reduced.
In order to avoid the time-consuming and labor-consuming process of removing the optical protection film 300 due to the bad operation of the operator, in some embodiments, referring to fig. 7 and 8, a second distance d2 is formed between the outer contour of the orthographic projection of the removing portion 320 on the reference plane R (i.e. the fifth contour T5) and the outer contour of the orthographic projection of the module body 100 on the reference plane R (i.e. the sixth contour T6). The second distance d2 has a dimension of 5 mm or more. As such, the operator may be facilitated to tear off the optical protective film 300.
It can be understood that, when the module body 100 includes the frame body 110 as illustrated in some embodiments, an outer contour of an orthographic projection of the tear-off portion 320 on the reference plane R (i.e., the fifth contour T5) is an outer contour of an orthographic projection of the frame body 110 on the reference plane R.
In order to meet the requirement of subsequently placing the backlight module on the carrier, in other embodiments, the size of the second distance d2 may be designed to be less than or equal to 15 mm. Of course, the maximum size of the second distance d2 may be set according to a specific use situation, and this is not particularly limited by the embodiment of the present application.
In some embodiments, body portion 310 and tear-away portion 320 are a unitary structure. Therefore, the main body part 310 and the tearing part 320 can be connected with each other with the help of the characteristics of an integrated structure, and the tearing process is further facilitated.
In some embodiments, the adhesive layer 200 is a double-sided tape. In this way, the purpose of fixing the optical protective film 300 in the embodiment of the present application can be achieved by using the adhesive property of the double-sided tape, and the dustproof effect can be further improved by using the characteristic that the side surface of the double-sided tape is also adhesive.
It should be noted that the backlight module provided in the embodiment of the present application can be applied to a display device, and the display device can be applied to an electronic apparatus. When the backlight module provided by the embodiment of the application is applied, the optical protective film needs to be torn off so as to be attached to other components. The electronic equipment can be applied to the fields of mobile phone terminals, bionic electronics, electronic skins, wearable equipment, vehicle-mounted equipment, internet of things equipment, artificial intelligence equipment and the like. For example, the electronic device may be a mobile phone terminal, a tablet, a palmtop, an ipod, a smart watch, a laptop, a television, a monitor, or the like. The selection can be performed according to the actual use situation, and this is not particularly limited in the embodiments of the present application.
To sum up, in the backlight module provided in the embodiment of the present application, since the optical protection film 300 is covered on one side of the light emitting surface 101 by the adhesive layer 200, and the adhesive layer 200 is disposed around the outer contour of the light emitting surface 101, the optical protection film 300 and the adhesive layer 200 can block dust or dirt from entering the light emitting surface 101 together, so as to protect the light emitting surface 101 of the module body 100. The optical protection film 300 has high optical transmission property and forms a gap with the light emitting surface 101, so that the appearance of the backlight module can be checked without tearing off the optical protection film 300. From this, the backlight unit that this application embodiment provided when can protecting the play plain noodles 101 of module body 100, reduces because of tearing off the risk of going into dirt or dirty that optical protection film 300 brought, has promoted production packaging efficiency. Meanwhile, the optical protection film 300 is of an integrated structure comprising the tearing part 320, so that an operator can tear the optical protection film 300 conveniently, and the layering risk of the bonding layer 200 is reduced.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The embodiments described above represent only a few embodiments of the present application, which are described in greater detail and detail, but should not be construed to limit the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (13)
1. A backlight module, comprising:
the module body is provided with a light-emitting surface;
the bonding layer is arranged on the light emitting surface; and
the optical protective film is covered on one side of the light-emitting surface by virtue of the bonding layer, and a gap is formed between the optical protective film and the light-emitting surface;
the surface parallel to the light-emitting surface is a reference surface;
the outline of the orthographic projection of the bonding layer on the reference surface and the outline of the orthographic projection of the light-emitting surface on the reference surface are superposed with each other;
and the orthographic projection of the optical protection film on the reference surface covers the orthographic projection of the light emergent surface on the reference surface.
2. The backlight module according to claim 1, wherein the optical protective film has a dimension in a thickness direction of not less than 0.3 mm.
3. The backlight module as claimed in claim 1, wherein the optical protective film has a transmittance of less than 80%; and/or
The haze of the optical protective film is more than 3%.
4. A backlight module according to claim 1, wherein the material of the optical protective film comprises polyethylene terephthalate.
5. The backlight module according to claim 1, wherein the orthographic projection of the optical protection film on the reference surface covers the orthographic projection of the adhesive layer on the reference surface.
6. The backlight module according to claim 5, wherein a first distance is formed between an outline of an orthographic projection of the optical protection film on the reference surface and an outline of an orthographic projection of the adhesive layer on the reference surface.
7. The backlight module according to claim 6, wherein the module body comprises a frame body and a module main body disposed in the frame body, and the light emitting surface is formed on an exposed surface of the module main body;
a step part is arranged on the inner wall of the frame body, the optical protective film is positioned at the step part along a first direction, and the bonding layer is arranged in an area formed between the optical protective film and the light emergent surface;
the first direction is perpendicular to the light emitting surface.
8. The backlight module according to claim 7, wherein the step portion has a first positioning surface and a second positioning surface connected to the first positioning surface;
the first positioning surface is used for positioning the optical protective film in the first direction, and the second positioning surface is used for positioning the optical protective film in the second direction;
the second direction is perpendicular to the first direction and parallel to the light emitting surface.
9. The backlight module according to claim 7, wherein an outer contour of an orthographic projection of the adhesive layer on the reference surface and an inner contour of an orthographic projection of the frame body on the reference surface coincide with each other.
10. The backlight module as claimed in any one of claims 1-9, wherein the optical protective film comprises a main body portion and a tearing portion connected to the main body portion;
the orthographic projection of the main body part on the reference surface covers the orthographic projection of the light emitting surface on the reference surface;
at least part of the orthographic projection of the tearing part on the reference surface is positioned outside the orthographic projection of the module body on the reference surface.
11. The backlight module according to claim 10, wherein a second distance is formed between an outline of an orthographic projection of the tearing portion on the reference surface and an outline of an orthographic projection of the module body on the reference surface;
the size of the second distance is greater than or equal to 5 mm.
12. A backlight module according to claim 10, wherein the main body portion and the tearing portion are of an integral structure.
13. A backlight module according to any one of claims 1-9, wherein the adhesive layer is a double-sided tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211208021.3A CN115424516A (en) | 2022-09-30 | 2022-09-30 | Backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211208021.3A CN115424516A (en) | 2022-09-30 | 2022-09-30 | Backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115424516A true CN115424516A (en) | 2022-12-02 |
Family
ID=84205585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211208021.3A Pending CN115424516A (en) | 2022-09-30 | 2022-09-30 | Backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115424516A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002328226A (en) * | 2001-04-26 | 2002-11-15 | Hitachi Chem Co Ltd | Cohesive film for protection of optical sheet before inspection and method for manufacturing optical sheet using the same |
| JP2010168437A (en) * | 2009-01-21 | 2010-08-05 | Dic Corp | Pressure-sensitive adhesive tape and lcd module |
| CN105062380A (en) * | 2015-09-22 | 2015-11-18 | 友达光电（苏州）有限公司 | Adhesive tape structure for peeling off soft protective film on panel |
| CN105757537A (en) * | 2016-03-25 | 2016-07-13 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN205899198U (en) * | 2016-05-05 | 2017-01-18 | 安徽帝显电子有限公司 | Back light module and liquid crystal display device |
| CN208689320U (en) * | 2018-09-27 | 2019-04-02 | 信利半导体有限公司 | Liquid crystal display die set and liquid crystal display device |
| CN110221469A (en) * | 2019-06-25 | 2019-09-10 | 武汉华星光电技术有限公司 | Vehicle-mounted touch display unit |
| CN209418058U (en) * | 2019-03-07 | 2019-09-20 | 信利光电股份有限公司 | A kind of dust-proof backlight of narrow frame |
| US20200012039A1 (en) * | 2018-07-03 | 2020-01-09 | Beijing Boe Optoelectronics Technology Co., Ltd. | Backlight module and display device |
| TWI704999B (en) * | 2019-12-24 | 2020-09-21 | 茂林光學股份有限公司 | Processing method, processing equipment for light guide plate with protective film and light guide plate with protective film thereof |
| CN114149756A (en) * | 2021-12-01 | 2022-03-08 | 业成科技（成都）有限公司 | Protection film structure and touch panel |
| CN114879403A (en) * | 2022-05-23 | 2022-08-09 | 业成科技（成都）有限公司 | Display device manufacturing method and display device |
-
2022
- 2022-09-30 CN CN202211208021.3A patent/CN115424516A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002328226A (en) * | 2001-04-26 | 2002-11-15 | Hitachi Chem Co Ltd | Cohesive film for protection of optical sheet before inspection and method for manufacturing optical sheet using the same |
| JP2010168437A (en) * | 2009-01-21 | 2010-08-05 | Dic Corp | Pressure-sensitive adhesive tape and lcd module |
| CN105062380A (en) * | 2015-09-22 | 2015-11-18 | 友达光电（苏州）有限公司 | Adhesive tape structure for peeling off soft protective film on panel |
| CN105757537A (en) * | 2016-03-25 | 2016-07-13 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN205899198U (en) * | 2016-05-05 | 2017-01-18 | 安徽帝显电子有限公司 | Back light module and liquid crystal display device |
| US20200012039A1 (en) * | 2018-07-03 | 2020-01-09 | Beijing Boe Optoelectronics Technology Co., Ltd. | Backlight module and display device |
| CN208689320U (en) * | 2018-09-27 | 2019-04-02 | 信利半导体有限公司 | Liquid crystal display die set and liquid crystal display device |
| CN209418058U (en) * | 2019-03-07 | 2019-09-20 | 信利光电股份有限公司 | A kind of dust-proof backlight of narrow frame |
| CN110221469A (en) * | 2019-06-25 | 2019-09-10 | 武汉华星光电技术有限公司 | Vehicle-mounted touch display unit |
| TWI704999B (en) * | 2019-12-24 | 2020-09-21 | 茂林光學股份有限公司 | Processing method, processing equipment for light guide plate with protective film and light guide plate with protective film thereof |
| CN114149756A (en) * | 2021-12-01 | 2022-03-08 | 业成科技（成都）有限公司 | Protection film structure and touch panel |
| CN114879403A (en) * | 2022-05-23 | 2022-08-09 | 业成科技（成都）有限公司 | Display device manufacturing method and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100817991B1 (en) | Display device | |
| KR102481443B1 (en) | Method of manufacturing protective film and method of manufacturing display device | |
| KR102055485B1 (en) | Backlight device and liquid crystal display device having the same | |
| JP5302060B2 (en) | Electro-optical device and electronic apparatus | |
| US8488335B2 (en) | Electro-optical device and electronic apparatus | |
| US10739514B2 (en) | Light source device, backlight device comprising the same and liquid crystal display device | |
| US20180106959A1 (en) | Backlight module and liquid crystal display | |
| JP2019139072A (en) | Display device and flexible wiring board | |
| JP6180312B2 (en) | LED backlight | |
| JP2018129124A (en) | Backlight device and liquid crystal display device including the same | |
| TWI595294B (en) | Backlight module and protection film of optical films of the same | |
| US20070139583A1 (en) | Display module | |
| JP7086717B2 (en) | Light source device, backlight device equipped with this, and liquid crystal display device | |
| JP7083683B2 (en) | Liquid crystal display device | |
| WO2018147270A1 (en) | Image display device | |
| CN115424516A (en) | Backlight module | |
| JP2017157467A (en) | Surface light source device, display device, and electronic equipment | |
| JP2010072272A (en) | Electro-optical device and electronic equipment | |
| CN211972200U (en) | Adhesive tape, vehicle-mounted display module and vehicle-mounted display device | |
| US20120140151A1 (en) | Liquid crystal display device and multilayer polarization plate | |
| JP2017098213A (en) | Backlight device, display device including the same, and manufacturing method of backlight device | |
| US10353140B2 (en) | Backlight unit and display device | |
| CN102466901A (en) | Display device | |
| US11012547B2 (en) | Electronic device | |
| JP6693139B2 (en) | Case, surface light source device, display device, and electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240108 Address after: 518109, Building E4, 101, Foxconn Industrial Park, No. 2 East Ring 2nd Road, Fukang Community, Longhua Street, Longhua District, Shenzhen City, Guangdong Province (formerly Building 1, 1st Floor, G2 District), H3, H1, and H7 factories in K2 District, North Shenchao Optoelectronic Technology Park, Minqing Road, Guangdong Province Applicant after: INTERFACE OPTOELECTRONICS (SHENZHEN) Co.,Ltd. Applicant after: Interface Technology (Chengdu) Co., Ltd. Applicant after: GENERAL INTERFACE SOLUTION Ltd. Address before: No.689 Hezuo Road, West District, high tech Zone, Chengdu City, Sichuan Province Applicant before: Interface Technology (Chengdu) Co., Ltd. Applicant before: INTERFACE OPTOELECTRONICS (SHENZHEN) Co.,Ltd. Applicant before: Yicheng Photoelectric (Wuxi) Co.,Ltd. Applicant before: GENERAL INTERFACE SOLUTION Ltd. |
|
| TA01 | Transfer of patent application right |