Membrane assembly, material belt and display module

Abstract

The utility model discloses a diaphragm assembly, which comprises a base diaphragm assembly, the base diaphragm assembly comprises a light uniformizing area and a shading area, the shading area has a first length in a first direction, the light uniformizing area has a second length in the first direction, and the first length is greater than the second length; the light uniformizing area is located on one side edge, in the second direction, of the light shading area, and the first direction is perpendicular to the second direction. According to the membrane assembly, the light uniformizing area and the shading area are integrated, and the membrane pasting frequency and the number of membrane pasting clamps can be reduced. The utility model further provides a material belt and a display module. The material belt and the display module comprise the diaphragm assembly.

Description

Technical Field

[0001] The utility model relates to the field of optical films, in particular to a film assembly, a material belt and a display module. Background Art

[0002] The cover plate of the existing display module has photosensitive holes, and the mobile phone uses the photosensitive holes to sense the brightness of the ambient light and then adjust the brightness of the display module. The photosensitive device is very sensitive to light. In order to improve the uniformity of the incident ambient light, a uniform light film is generally attached to the photosensitive hole of the cover plate.

[0003] At the same time, when the display module is working, some weak light will leak from the edge of its backlight assembly. When the light is transmitted to the photosensitive device of the photosensitive hole, it will affect the photosensitive device's incorrect recognition of ambient light. Therefore, in order to improve the light sensitivity accuracy, a black light-shielding film is generally attached to the gap between the backlight assembly and the screen assembly to block the weak light leaked from the backlight assembly.

[0004] Since the light-emitting film and the light-shielding film are separately arranged, the light-emitting film and the light-shielding film are generally attached to the display module in two times through a fixture. The process is long, the efficiency is low, and the yield is also low. In addition, the fitting tolerance of the fixture is as large as ±0.5 or more, which cannot fully adapt to some structures with high precision requirements. Utility Model Content

[0005] In order to solve the above-mentioned deficiencies of the prior art, the utility model provides a film assembly, which integrates the light-evening area and the light-shielding area into one, thereby reducing the number of film sticking times and the number of film sticking fixtures.

[0006] The utility model also provides a material belt and a display module, comprising the above-mentioned diaphragm assembly.

[0007] The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0008] A diaphragm assembly includes a base film assembly, wherein the base film assembly includes a light-evening area and a light-shielding area, wherein the light-shielding area has a first length in a first direction, and the light-evening area has a second length in the first direction, and the first length is greater than the second length; the light-evening area is located on one side of the light-shielding area in the second direction, and the first direction is perpendicular to the second direction.

[0009] Furthermore, the base film assembly includes a first base film, and the light-evening area and the light-shielding area are both arranged on the first base film.

[0010] Furthermore, the base film assembly includes a first base film and a second base film, the light-evening area is arranged on the first base film, the light-shielding area is arranged on the second base film, and the first base film and the second base film are spliced ​​in the same layer or overlapped in different layers.

[0011] Furthermore, a first pre-indentation or a first punching mark extending along a first direction is provided between the light-evening area and the light-shielding area.

[0012] Furthermore, the shading area includes a first bonding area and a second bonding area opposite to each other along the second direction, and a second pre-indentation or a second punching mark extending along the first direction is provided between the first bonding area and the second bonding area.

[0013] Furthermore, the membrane assembly also includes a release film, and the base film assembly is attached to the release film.

[0014] Furthermore, the release film includes an attachment area corresponding to the light-evening area and the light-shielding area, and a peripheral area outside the attachment area, and a positioning structure is provided on the peripheral area.

[0015] Furthermore, the positioning structure includes a plurality of positioning holes.

[0016] A material strip comprises a release film, a winding core and the above-mentioned film sheet assembly, wherein the release film is wound outside the winding core, and each film sheet assembly is sequentially attached to the release film along the winding direction of the release film.

[0017] A display module comprises a protective cover, a screen assembly, a backlight assembly and the above-mentioned diaphragm assembly, wherein the screen assembly is arranged on the light emitting surface of the backlight assembly, the protective cover is arranged on the side surface of the screen assembly facing away from the backlight assembly, and the protective cover is provided with photosensitive holes; the light-averaging area of ​​the diaphragm assembly is attached to the back side of the photosensitive holes of the protective cover, and the light-shielding area of ​​the diaphragm assembly is attached to the side of the backlight assembly to shield the light leakage gap between the screen assembly and the backlight assembly.

[0018] The utility model has the following beneficial effects: the diaphragm assembly of the utility model includes both the light-evening area and the light-shielding area, that is, the light-evening function and the light-shielding function are integrated on the same base film assembly, and during lamination, only a film lamination clamp is needed to position and laminate the base film assembly and the display module, and the positioning and lamination between the light-evening area and the light-shielding area and the photosensitive holes and the light leakage gaps of the display module can be completed at the same time, without the need for positioning and lamination twice, thus saving a film lamination position and a film lamination clamp, and improving the film lamination efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the planar structure of the diaphragm assembly provided by the utility model.

[0020] Figure 2 for Figure 1 AA cross-sectional structural schematic diagram of the diaphragm assembly shown.

[0021] Figure 3 for Figure 1 AA cross-sectional structural schematic diagram of another diaphragm assembly is shown.

[0022] Figure 4 for Figure 1 AA cross-sectional structural schematic diagram of another diaphragm assembly is shown.

[0023] Figure 5 This is a schematic diagram of the planar structure of another diaphragm assembly provided by the utility model.

[0024] Figure 6 This is a schematic structural diagram of the material strip provided by the utility model.

[0025] Figure 7 This is a schematic diagram of the structure of the display module provided by the utility model. Implementation

[0026] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0030] like Figure 1 As shown, a membrane assembly includes a base membrane assembly 1, wherein the base membrane assembly 1 includes a light-distributing area 11 and a light-shielding area 12, wherein the light-shielding area 12 has a first length in the first direction, and the light-distributing area 11 has a second length in the first direction, and the first length is greater than the second length; the light-distributing area 11 is located on one side of the light-shielding area 12 in the second direction, and the first direction is perpendicular to the second direction.

[0031] The diaphragm assembly of the utility model includes both the light-evening area 11 and the light-shielding area 12, that is, the light-evening function and the light-shielding function are integrated on the same base film assembly 1. During lamination, only a film lamination clamp is needed to position and laminate the base film assembly 1 and the display module, and the positioning and lamination between the light-evening area 11 and the light-shielding area 12 and the photosensitive holes and light leakage gaps of the display module can be completed simultaneously. There is no need for positioning and lamination twice, which saves a film lamination position and a film lamination clamp, and improves the film lamination efficiency.

[0032] The light-shielding region 12 has two opposite short sides in the first direction, and has two opposite long sides in the second direction; the light-evening region 11 is located on one of the long sides of the light-shielding region 12 .

[0033] When affixing the film, the light-averaging area 11 of the base film component 1 is affixed to the back side of the photosensitive hole of the display module, and the light-shielding area 12 of the base film component 1 is affixed to the side of the backlight component of the display module, and blocks the light leakage gap between the screen component and the backlight component, and the back side of the photosensitive hole and the side of the backlight component are perpendicular to each other, that is, when affixing the film, the light-averaging area 11 and the light-shielding area 12 of the base film component 1 need to be bent relative to each other.

[0034] In order to facilitate the bending of the base film assembly 1 and prevent the base film assembly 1 from stress rebound after bending, preferably, a first pre-indentation 13 or a first punching mark 13 extending along a first direction is provided between the light-evening area 11 and the light-shielding area 12.

[0035] The thickness of the base film assembly 1 at the first pre-indentation 13 is smaller than the thickness of the light-distributing area 11 and the light-shielding area 12, or the base film assembly 1 is partially disconnected at the first punching mark 13. The first pre-indentation 13 or the first punching mark 13 can reduce the connection stress between the light-distributing area 11 and the light-shielding area 12, so as to facilitate relative bending of the light-distributing area 11 and the light-shielding area 12 when applying the film, and prevent stress rebound between the light-distributing area 11 and the light-shielding area 12 after bending.

[0036] The first pre-indentation 13 can be formed by rolling along the first direction on the base film assembly 1 between the light-evening area 11 and the light-shielding area 12 by roller hot pressing; the first punching mark 13 can be formed by punching along the first direction at intervals on the base film assembly 1 between the light-evening area 11 and the light-shielding area 12 by die cutting, wherein the first punching mark 13 includes a plurality of punching points and a plurality of connecting points, and each punching point and each connecting point are arranged in sequence along the first direction at intervals, and the base film assembly 1 is in a disconnected state at the punching point and in a connected state at the connecting point.

[0037] The light shielding area 12 includes a first bonding area 121 and a second bonding area 122 that are opposite to each other along a second direction.

[0038] When sticking the film, the first sticking area 121 of the base film component 1 is stuck to the side of the backlight component of the display module, and blocks the light leakage gap between the screen component and the backlight component, and the second sticking area 122 of the base film component 1 is stuck to the back of the backlight component of the display module, and the side and back of the backlight component are perpendicular to each other, that is, when sticking the film, the first sticking area 121 and the second sticking area 122 of the base film component 1 need to be bent relative to each other.

[0039] In order to facilitate the bending of the base film assembly 1 and prevent stress rebound of the base film assembly 1 after bending, preferably, a second pre-indentation 14 or a second punching mark 14 extending along the first direction is provided between the first fitting area 121 and the second fitting area 122.

[0040] The thickness of the base film assembly 1 at the second pre-indentation 14 is smaller than the thickness of the first fitting area 121 and the second fitting area 122, or the base film assembly 1 is partially disconnected at the second punching mark 14. The second pre-indentation 14 or the second punching mark 14 can reduce the connection stress between the first fitting area 121 and the second fitting area 122, so as to facilitate relative bending of the first fitting area 121 and the second fitting area 122 during film lamination, and prevent stress rebound between the first fitting area 121 and the second fitting area 122 after bending.

[0041] The second pre-indentation 14 can be formed by rolling along the first direction on the base film assembly 1 between the first bonding area 121 and the second bonding area 122 by roller hot pressing; the second punching mark 14 can be formed by punching along the first direction at intervals on the base film assembly 1 between the first bonding area 121 and the second bonding area 122 by die punching, wherein the second punching mark 14 includes a plurality of punching points and a plurality of connection points, and each punching point and each connection point are arranged in sequence along the first direction at intervals, and the base film assembly 1 is in a disconnected state at the punching point and in a connected state at the connection point.

[0042] The light-homogenizing region 11 is located on a side of the first laminating region 121 facing away from the second laminating region 122 . Embodiment 2

[0043] As an optimization solution of the first embodiment, in this embodiment, if Figure 2 As shown, the base film assembly 1 includes a first base film 101 , and the light-evening area 11 and the light-shielding area 12 are both arranged on the first base film 101 .

[0044] In this embodiment, the light-evening area 11 and the light-shielding area 12 are made on the same base film, wherein the light-evening area 11 can be formed by, but is not limited to, making a light-evening microstructure 103 on the surface of a first predetermined area of ​​the first base film 101, and the light-shielding area 12 can be formed by, but is not limited to, silk-screening light-shielding ink 104 on the surface of a second predetermined area of ​​the first base film 101. Embodiment 3

[0045] As another optimization solution of the first embodiment, in this embodiment, if Figure 3 and 4 As shown, the base film assembly 1 includes a first base film 101 and a second base film 102, the light-evening area 11 is arranged on the first base film 101, the light-shielding area 12 is arranged on the second base film 102, and the first base film 101 and the second base film 102 are spliced ​​in the same layer or overlapped in different layers.

[0046] In this embodiment, the light-homogenizing region 11 and the light-shielding region 12 are respectively manufactured on the first base film 101 and the second base film 102 , and then the first base film 101 and the second base film 102 are connected together by a splicing or overlapping process.

[0047] Compared with the second embodiment, since the light-distributing region 11 and the light-shielding region 12 are first made on different base films respectively, the present embodiment can expand the method of making the light-distributing region 11 and the method of making the light-shielding region 12. For example, the light-distributing region 11 can be formed by mixing and doping light-distributing particles in the first base film 101 in addition to making the light-distributing microstructure 103 on the surface of the first base film 101. For example, the light-shielding region 12 can be formed by mixing and doping carbon black, black pigment, light-absorbing material, etc. in the second base film 102 in addition to silk-screening the light-shielding ink 104 on the surface of the second base film 102.

[0048] Among them, Figure 3 As shown, the same-layer splicing between the first base film 101 and the second base film 102 refers to that the side surface of the first base film 101 and the side surface of the second base film 102 are connected together by ultrasonic welding, heat fusion, etc. to form an integrated connection structure.

[0049] If same-layer splicing is adopted, the first pre-indentation 13 or the first punching mark 13 is made at the splicing position of the first base film 101 and the second base film 102 or is made on the second base film 102, and the second pre-indentation 14 or the second punching mark 14 is made on the second base film 102.

[0050] like Figure 4 As shown, the heterogeneous overlap between the first base film 101 and the second base film 102 refers to that a local surface area of ​​the first base film 101 and a local surface area of ​​the second base film 102 are connected together by bonding and laminating to form a non-integrated connection structure.

[0051] If different layers are overlapped, the first pre-indentation 13 or the first punching mark 13 is made on the first base film 101 , and the second pre-indentation 14 or the second punching mark 14 is made on the second base film 102 . Embodiment 4

[0052] As another optimization solution of the first embodiment, in this embodiment, if Figure 5 As shown, the film assembly further includes a release film 2 , and the base film assembly 1 is attached to the release film 2 .

[0053] The main function of the release film 2 is to protect the light-distributing area 11 and the light-shielding area 12 on the base film assembly 1 to prevent the light-distributing area 11 and the light-shielding area 12 on the base film assembly 1 from being contaminated by dust, fingerprints, etc. before lamination; the release film 2 needs to be torn off when laminating.

[0054] The release film 2 includes an attachment area 21 corresponding to the base film assembly 1 , and a peripheral area 22 located outside the attachment area 21 , and a positioning structure 23 is disposed on the peripheral area 22 .

[0055] The positioning structure 23 on the release film 2 is used to cooperate with the corresponding structure on the film sticking fixture when sticking the film, so as to complete the positioning of the light-averaging area 11 and the light-shielding area 12 of the base film assembly 1 in the film sticking fixture. After the positioning is completed, the release film 2 is torn off and the base film assembly 1 is stuck on the display module.

[0056] In this embodiment, the positioning structure 23 includes a plurality of positioning holes, and the corresponding structure on the film sticking fixture is a plurality of positioning columns. Embodiment 5

[0057] like Figure 6 As shown, a material strip includes a release film 2, a winding core 3, and the film assembly 1a described in Examples 1 to 3, wherein the release film 2 is wound outside the winding core 3, and each film assembly 1a is sequentially attached to the release film 2 along the winding direction of the release film 2.

[0058] In implementation, the reel core 3 is preferably a hollow reel core so as to match with the automatic film laminating equipment and reduce the manufacturing cost; the diaphragm assembly 1a is distributed on the release film 2 in sequence along the winding direction of the release film 2, and then the release film 2 is wound on the reel core 3, so as to facilitate placing the material strip on the automatic film laminating equipment through the reel core 3 during film laminating, and the diaphragm assembly 1a on the release film 2 is automatically pulled out under the drive of the automatic film laminating equipment to realize automatic film laminating for the display module.

[0059] The difference between this embodiment and the fourth embodiment is that the release film 2 of the fourth embodiment is mainly used for manual film pasting based on the film pasting fixture, while the release film 2 of this embodiment is mainly used for automatic film pasting based on the automatic film pasting equipment. Embodiment 6

[0060] like Figure 7As shown, a display module includes a protective cover plate 4, a screen assembly 5, a backlight assembly 6 and the diaphragm assembly 1a described in Examples 1 to 3, wherein the screen assembly 5 is arranged on the light emitting surface of the backlight assembly 6, the protective cover plate 4 is arranged on the side surface of the screen assembly 5 facing away from the backlight assembly 6, and the protective cover plate 4 is provided with a photosensitive hole 41; the light-averaging area 11 of the diaphragm assembly 1a is attached to the back side of the photosensitive hole 41 of the protective cover plate 4, and the light-shielding area 12 of the diaphragm assembly 1a is attached to the side of the backlight assembly 6, and the light leakage gap between the screen assembly 5 and the backlight assembly 6 is blocked.

[0061] A cover plate ink 42 is disposed on the back side of the peripheral region 22 of the protective cover plate 4 , and the cover plate ink 42 has a through hole region for forming the photosensitive hole 41 .

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A diaphragm assembly, characterized in that: It includes a base film component, which includes a light-evening area and a light-shielding area, the light-shielding area has a first length in the first direction, the light-evening area has a second length in the first direction, and the first length is greater than the second length; the light-evening area is located on a side edge of the light-shielding area in the second direction, and the first direction is perpendicular to the second direction.

2. The diaphragm assembly according to claim 1, characterized in that: The base film assembly includes a first base film, and the light-evening area and the light-shielding area are both arranged on the first base film.

3. The diaphragm assembly according to claim 1, characterized in that: The base film assembly includes a first base film and a second base film, the light-evening area is arranged on the first base film, the light-shielding area is arranged on the second base film, and the first base film and the second base film are spliced ​​in the same layer or overlapped in different layers.

4. The diaphragm assembly according to claim 1, characterized in that: A first pre-indentation or a first punching mark extending along a first direction is provided between the light-evening area and the light-shielding area.

5. The diaphragm assembly according to claim 1, characterized in that: The light shielding area includes a first bonding area and a second bonding area that are opposite to each other along a second direction, and a second pre-pressing mark or a second punching mark extending along the first direction is provided between the first bonding area and the second bonding area.

6. The diaphragm assembly according to claim 1, characterized in that: The membrane assembly further comprises a release film, and the base film assembly is attached to the release film.

7. The diaphragm assembly according to claim 6, characterized in that: The release film comprises an attachment area corresponding to the light-evening area and the light-shielding area, and a peripheral area outside the attachment area, wherein a positioning structure is provided on the peripheral area.

8. The diaphragm assembly according to claim 7, characterized in that: The positioning structure includes a plurality of positioning holes.

9. A material strip, characterized in that: It comprises a release film, a winding core and a plurality of film assemblies according to claim 1, wherein the release film is wound outside the winding core, and each film assembly is sequentially attached to the release film along the winding direction of the release film.

10. A display module, characterized in that: It includes a protective cover, a screen assembly, a backlight assembly and the diaphragm assembly described in claim 1, wherein the screen assembly is arranged on the light-emitting surface of the backlight assembly, the protective cover is arranged on the side surface of the screen assembly facing away from the backlight assembly, and the protective cover is provided with photosensitive holes; the light-averaging area of ​​the diaphragm assembly is attached to the back side of the photosensitive holes of the protective cover, and the light-shielding area of ​​the diaphragm assembly is attached to the side of the backlight assembly to block the light leakage gap between the screen assembly and the backlight assembly.

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