CN110796954A - Display module, manufacturing method thereof and display device - Google Patents
Display module, manufacturing method thereof and display device Download PDFInfo
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- CN110796954A CN110796954A CN201911094341.9A CN201911094341A CN110796954A CN 110796954 A CN110796954 A CN 110796954A CN 201911094341 A CN201911094341 A CN 201911094341A CN 110796954 A CN110796954 A CN 110796954A
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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
- G09F9/301—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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
Abstract
The invention discloses a display module, a manufacturing method thereof and a display device, and relates to the technical field of display, wherein the display module comprises a blind hole positioned in a hollow area, a backlight module and a display panel positioned on one side of a light-emitting surface of the backlight module; the blind hole penetrates through the backlight module, and an accommodating space is formed by the blind hole and one side of the display panel facing the backlight module; the back frame in the backlight module comprises a substrate and a bent part, wherein the bent part is bent towards the display panel, and the bent part forms a hole wall of the blind hole; the bending part comprises a first end and a second end which are oppositely arranged along the direction vertical to the plane of the display panel, the second end is connected with the substrate, and the first end is positioned on one side of the second end close to the display panel; the display module further comprises an ink layer and a glue sealing layer, wherein the ink layer and the glue sealing layer are both positioned on one side of the display panel facing the backlight module; the printing ink layer covers the first non-display area, and the sealing adhesive layer is filled between the first end and the display panel and is in contact with the printing ink layer. Therefore, the narrow frame is realized, and the sealing process is reduced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display module, a manufacturing method thereof and a display device.
Background
With the development of display technology, display panels have higher screen occupation ratio, and full screens have wide attention due to the narrow-frame or even frameless display effect. At present, spaces are often reserved for electronic photosensitive devices such as commonly used front cameras, infrared sensing devices and fingerprint identification devices on the front of display equipment such as mobile phones and tablet computers. For example, the photosensitive devices are arranged at the top position of the front surface of the display device, and the corresponding positions form a non-display area, so that the screen occupation ratio of the device is reduced.
In the prior art, in order to increase the screen ratio, a high-transmittance region may be formed in the display region of the display panel to accommodate the photosensitive device, wherein the high-transmittance region may be a through hole design for digging through the display panel and the backlight unit, or a design for digging through holes on the backlight unit by digging only a part of the film layer on the display panel, and further, the photosensitive device is placed in the corresponding through hole.
At least two sealing processes are generally performed in the area where the backlight module is connected with the display panel at the position corresponding to the high-light-transmission area to realize shading, so that the light in the backlight module is prevented from leaking into the through hole to influence the collection performance of the photosensitive device in the through hole. However, the process of the molding process is too wide for the frame of the non-display area around the through hole, and it is not favorable to save the production cost and the process.
Disclosure of Invention
In view of this, the invention provides a display module, a manufacturing method thereof and a display device, which are beneficial to reducing the sealant process while realizing a narrow frame, and saving the production cost and the production process.
In a first aspect, the present application provides a display module, including:
the display device comprises a hollow-out area, a first non-display area, a display area and a second non-display area, wherein the first non-display area at least semi-surrounds the hollow-out area, the display area at least semi-surrounds the first non-display area, and the second non-display area at least semi-surrounds the display area;
the display module comprises a blind hole positioned in the hollow area, a backlight module and a display panel positioned on one side of a light-emitting surface of the backlight module; the blind hole penetrates through the backlight module along a direction perpendicular to the plane of the display panel, and an accommodating space is formed by the blind hole and one side of the display panel facing the backlight module;
the backlight module comprises a back frame, the back frame comprises a substrate and a bent part, the bent part is crossed with the extending direction of the substrate, the bent part is bent towards the display panel, and the bent part forms the hole wall of the blind hole; the bending part comprises a first end and a second end which are oppositely arranged along the plane direction perpendicular to the display panel, the second end is connected with the substrate, and the first end is positioned on one side of the second end close to the display panel;
the display module further comprises an ink layer and a sealing adhesive layer, wherein the ink layer and the sealing adhesive layer are both positioned on one side of the display panel facing the backlight module; the ink layer covers the first non-display area, and the sealing adhesive layer is filled between the first end and the display panel and is in contact with the ink layer.
In a second aspect, the present application further provides a method for manufacturing a display module, where the display module includes a hollow-out area, a first non-display area, a display area, and a second non-display area, the first non-display area at least partially surrounds the hollow-out area, the display area at least partially surrounds the first non-display area, and the second non-display area at least partially surrounds the display area;
the manufacturing method comprises the following steps:
providing the display panel;
manufacturing the ink layer on one side of the display panel by adopting an ink pad printing method, so that the ink layer is at least positioned in the first non-display area;
providing the backlight module, and attaching the display panel to a light-emitting surface of the backlight module;
and filling a sealing adhesive layer between the first end of the bent part and the display panel, and enabling the sealing adhesive layer to be in contact with the ink layer.
In a third aspect, the present application further provides a display device including the display module provided in the present application.
Compared with the prior art, the display module, the manufacturing method thereof and the display device provided by the invention at least realize the following beneficial effects:
in the display module assembly, the manufacturing method thereof and the display device provided by the application, the display module assembly comprises the blind hole in the hollow area, the blind hole penetrates through the backlight module assembly along the direction perpendicular to the plane where the display panel is located, the blind hole does not penetrate through the display panel, and the blind hole and one side of the display panel facing the backlight module assembly form an accommodating space. The backlight module comprises a back frame, the back frame comprises a substrate and a bending part, the substrate is parallel to the display panel, the bending part bends towards the display panel, and the first end of the bending part is located on one side of the second end of the bending part close to the display panel. Especially, the display module assembly still includes printing ink layer and sealing glue layer, and the printing ink layer covers first non-display area, and the sealing glue layer is filled between the first end of kink and display panel and is contacted with the printing ink layer. The setting of printing ink layer and sealing compound layer has played effectual shading effect, has avoided the phenomenon that the light that backlight unit sent leaks in the blind hole. Moreover, after the ink layer is introduced, only one sealing adhesive layer is needed to be added, and a plurality of sealing adhesive layers are not needed to be manufactured for shading, so that the sealing adhesive process in the display module is reduced, and the production process and the production cost are favorably saved. In addition, after the ink layer is introduced, the width of the ink layer can be accurately controlled, and compared with a plurality of sealing glue layers in the prior art, the width of a first non-display area can be effectively reduced, so that the narrow frame design is favorably realized.
Of course, it is not necessary for any product in which the present invention is practiced to achieve all of the above-described technical effects simultaneously.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;
FIG. 2 is an AA' cross-sectional view of the display module of FIG. 1;
fig. 3 is a diagram illustrating a relative position relationship between an ink layer and a blind hole in a display module according to an embodiment of the present disclosure;
fig. 4 is a relative position diagram of an ink layer and a bending portion in a display module according to an embodiment of the disclosure;
FIG. 5 is a diagram illustrating another relative position relationship between an ink layer and a blind hole in a display module according to an embodiment of the present disclosure;
FIG. 6 is a cross-sectional view of another AA' of the display module of FIG. 1;
FIG. 7 is a cross-sectional view of another AA' of the display module of FIG. 1;
fig. 8 is a flowchart illustrating a method for manufacturing a display module according to an embodiment of the present disclosure;
fig. 9 is a structural diagram of a display device according to an embodiment of the present application.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the prior art, in order to increase the screen ratio, a high-transmittance region may be formed in the display region of the display panel to accommodate the photosensitive device, wherein the high-transmittance region may be a through hole design for digging through the display panel and the backlight unit, or a design for digging through holes on the backlight unit by digging only a part of the film layer on the display panel, and further, the photosensitive device is placed in the corresponding through hole. At least two sealing processes are generally performed in the area where the backlight module is connected with the display panel at the position corresponding to the high-light-transmission area to realize shading, so that the light in the backlight module is prevented from leaking into the through hole to influence the collection performance of the photosensitive device in the through hole. However, the process of the molding process is too wide for the frame of the non-display area around the through hole, and it is not favorable to save the production cost and the process.
In view of this, the invention provides a display module, a manufacturing method thereof and a display device, which are beneficial to reducing the sealant process while realizing a narrow frame, and saving the production cost and the production process.
The following detailed description is to be read in connection with the drawings and the detailed description.
Fig. 1 is a schematic structural diagram of a display module provided in an embodiment of the present application, and fig. 2 is an AA' cross-sectional view of the display module provided in the embodiment of fig. 1, please refer to fig. 1 and fig. 2, which provide a display module 100 including: the display device comprises a hollow-out area 10, a first non-display area 11, a display area 12 and a second non-display area 13, wherein the first non-display area 11 at least semi-surrounds the hollow-out area 10, the display area 12 at least semi-surrounds the first non-display area 11, and the second non-display area 13 at least semi-surrounds the display area 12;
the display module 100 includes a blind hole 20 located in the hollow area 10, a backlight module 30, and a display panel 40 located on one side of a light-emitting surface of the backlight module 30; the blind hole 20 penetrates through the backlight module 30 along a direction perpendicular to a plane of the display panel 40, and an accommodating space 21 is formed by the blind hole 20 and one side of the display panel 40 facing the backlight module 30;
the backlight module 30 includes a back frame 50, the back frame 50 includes a substrate 51 and a bending portion 52, the extending directions of the bending portion 52 and the substrate 51 are crossed, the bending portion 52 bends toward the display panel 40, and the bending portion 52 forms a hole wall of the blind hole 20; the bending portion 52 includes a first end 521 and a second end 522 oppositely disposed along a plane direction perpendicular to the display panel 40, the second end 522 is connected to the substrate 51, and the first end 521 is located on a side of the second end 522 close to the display panel 40;
the display module 100 further includes an ink layer 60 and a sealant layer 70, where the ink layer 60 and the sealant layer 70 are both located on one side of the display panel 40 facing the backlight module 30; the ink layer 60 covers the first non-display region 11, and the sealant layer 70 is filled between the first end 521 and the display panel 40 and contacts the ink layer 60.
It should be noted that, the first non-display area in the present application may be generally disposed at a corner position or a middle position of the upper half portion of the display panel, and of course, the specific position may also be disposed according to the actual situation, which is not specifically limited in the present application. In addition, a first non-display area may surround or semi-surround a blind hole, and may surround or semi-surround two or more blind holes, which is not specifically limited in the present application.
Specifically, referring to fig. 1 and fig. 2, in the display module 100 provided in the present application, the display module 100 includes a blind hole 20 located in the hollow area 10, the blind hole 20 penetrates through the backlight module 30 along a direction perpendicular to a plane of the display panel 40, the blind hole 20 does not penetrate through the display panel 40, and an accommodating space is formed between the blind hole 20 and one side of the display panel 40 facing the backlight module 30. The backlight module 30 includes a back frame 50, the back frame 50 includes a substrate 51 and a bending portion 52, the substrate 51 is parallel to the display panel 40, the bending portion 52 bends toward the display panel 40, and the first end 521 of the bending portion 52 is located at a side of the second end 522 close to the display panel 40. Particularly, the display module 100 further includes an ink layer 60 and a sealant layer 70, the ink layer 60 covers the first non-display region 11, and the sealant layer 70 is filled between the first end 521 of the bending portion 52 and the display panel 40 and contacts the ink layer 60. The arrangement of the ink layer 60 and the sealant layer 70 plays an effective role in shading light, and avoids the phenomenon that light emitted by the backlight module 30 leaks into the blind hole 20. Moreover, after the ink layer 60 is introduced, only one additional sealant layer 70 is needed, multiple sealant layers 70 are not needed to be manufactured for shading, and only one sealant process is needed to be introduced to form the sealant layer 70 in the present application, so that the sealant process in the display module 100 is reduced, and the production process and the production cost are favorably saved. In addition, after introducing printing ink layer 60, the width of printing ink layer 60 can obtain accurate control, compares among the prior art multichannel adhesive sealing layer 70, can effectively reduce the frame width that first non-display area 11 corresponds to be favorable to realizing the narrow frame design of display module assembly 100.
It should be noted that, in the embodiment shown in fig. 1 and fig. 2, the first non-display area 11 is illustrated as being circular and completely surrounding the hollow area 10, in some other embodiments of the present application, the first non-display area 11 may also be embodied in other shapes, and may also partially surround the hollow area 10, which is not specifically limited in this application. In the display module 100 provided in the embodiment of the application, the backlight module 30 and the display panel 40 are pasted by the light-shielding frame glue, the light-shielding frame glue is correspondingly disposed in the second non-display area 13 shown in fig. 1, for example, the light-shielding frame glue is disposed around the display area 12 by a circle, and since fig. 2 is an AA' cross-sectional view of the position corresponding to the hollow portion in fig. 1 and does not relate to the area corresponding to the second non-display area 13, the light-shielding frame glue is not shown in fig. 2.
In the display panel provided in the embodiment of the present application, the bending portion 52 and the substrate 51 in the backlight module 30 can be manufactured by an integral molding process, for example, the bending portion 52 can be formed by punching a material at a position corresponding to a blind hole on the substrate 51.
In addition, the backlight module provided by the present application may include, for example, a reflective sheet, a light guide plate, a diffuser sheet, a brightness enhancement film, and the like, and since the present application does not relate to an improvement of an optical film included in the backlight module, details of this portion are not repeated, and specific configurations can refer to descriptions of the backlight module in the prior art.
Optionally, as shown in fig. 3, which is a relative position relationship diagram of the ink layer 60 and the blind hole 20 in the display module 100 provided in the embodiment of the present application, along a direction of a plane of the display panel 40, the ink layer 60 includes a first edge 61 and a second edge 62 that are oppositely disposed, the first edge 61 is located on a side of the second edge 62 away from the blind hole 20, a distance between the first edge 61 and the second edge 62 is D1, and D1 is greater than or equal to 0.25 mm.
Specifically, in this embodiment, the first non-display area completely surrounds the hollow area 10, and the ink layer 60 is disposed in the first non-display area and has a ring structure. The first edge 61 and the second edge 62 of the ink layer 60, which are oppositely disposed, refer to the inner edge and the outer edge of the ring structure, and the distance D1 between the inner edge and the outer edge represents the width of the ink layer 60, in this application, the precision of the width of the ink layer 60 can be accurately controlled to be 0.1mm, if the form of the sealant in the prior art is adopted, the width of the glue in the blind hole will at least reach more than 0.35mm (here, the width of the glue refers to the distance between the edge of the sealant in the blind hole and the bent portion), and in this application, the ink layer 60 is adopted to replace the original sealant, since the width of the ink layer 60 can be designed to be smaller than the width of the sealant, a space for compressing the width of the second non-display area 13 can be provided, and after the ink layer 60 is introduced, the width D3 of the sealant layer 70 in the blind hole can be reduced to 0.25mm, thereby, the frame width of the second non-display region 13 can be reduced, which is advantageous for realizing the design of a narrow frame while realizing reliable light shielding.
Optionally, fig. 4 is a relative position relationship diagram of the ink layer 60 and the bending portion 52 in the display module 100 according to the embodiment of the present disclosure, in order to clearly show the relative position relationship between the ink layer 60 and the bending portion 52, the sealing layer is not shown in fig. 4, and reference may be made to fig. 2 for the relative position relationship between the sealing layer and the ink layer and the bending portion. Referring to fig. 4, the ink layer 60 and the bending portion 52 overlap along an orthogonal projection perpendicular to a plane of the display panel 40.
Specifically, with reference to fig. 4, the ink layer 60 and the bending portion 52 overlap along an orthogonal projection perpendicular to the plane of the display panel 40, and when the sealant layer is filled between the ink layer 60 and the bending portion 52, the sealant layer can be simultaneously contacted with the ink layer 60 and the bending portion 52 with less sealant layers, thereby facilitating to reduce the production cost of the sealant layer. In addition, the sealant layer is in contact with the ink layer 60 and the bending portion 52 at the same time, and when the light emitted by the backlight module 30 reaches the positions of the ink layer 60 and the bending portion 52, a light leakage space is not formed, so that the possibility that the light in the backlight module 30 leaks into the hollow area 10 is effectively avoided by the design, and the light shielding performance of the second non-display area 13 is effectively improved.
Optionally, fig. 5 is a diagram illustrating another relative position relationship between the ink layer 60 and the blind hole 20 in the display module 100 according to the embodiment of the present application, in which the ink layer 60 extends from the first non-display area 11 to the blind hole 20, and a distance between an edge of the ink layer 60 in the blind hole 20 and the bending portion 52 is D2, where D2 is greater than 0 and less than or equal to 0.15 mm.
Specifically, with reference to fig. 5, in the display module 100 provided in this embodiment, the ink layer 60 covers the first non-display area 11 and also extends into the blind hole 20, and the distance between the edge of the ink layer 60 in the blind hole 20 and the bent portion 52 is greater than 0 and less than D2 and less than or equal to 0.15mm, that is, the width of the ink layer 60 extending into the blind hole 20 is within 0.15mm, so, in combination with fig. 2, after the sealant layer 70 is introduced, it is favorable to ensure that the sealant layer 70 can be in contact with the ink layer 60, thereby realizing reliable contact between the ink layer 60, the sealant layer 70, and the bent portion 52, and further being favorable to improve the light shielding performance of the display module 100 in the first non-display area, and preventing light emitted by the backlight module 30 from leaking into the blind hole 20. In addition, this application sets up the width that printing ink layer 60 is located the part in blind hole 20 to when less than or equal to 0.15mm, when promoting light-shielding performance, can also reduce printing ink layer 60 shared space in blind hole 20, avoids causing the influence to the photosensitive device who places in blind hole 20.
Optionally, fig. 6 is another AA' cross-sectional view of the display module 100 provided in the embodiment of fig. 1, in which the ink layer extends into the hollow area 10. In the hollowed-out area 10, the sealing adhesive layer 70 covers the ink layer 60; the width of the part of the sealant layer 70 located in the hollow area 10 along the plane of the display panel 40 is D3, wherein D3 is greater than or equal to 0 mm and less than or equal to 0.25 mm.
Specifically, in the prior art, when the two sealing layers 70 are used to seal the second non-display area 13, the width of the sealant in the hollow area 10 is usually over 0.35mm, and in the present application, after the ink layer 60 is used to replace the first sealant in the second non-display area 13, the contact between the ink layer 60 and the sealing layers 70 is more reliable, and the reliable contact between the two can be realized by using fewer sealing layers 70, so that the width of the second sealant in the hollow area 10 can also be reduced, specifically, D3 can be reduced to be not less than 0 and not more than 0.25mm, compared with the prior art in which the width of the second sealing layer 70 in the hollow area 10 can be reduced by at least 0.1mm to 0.35mm, therefore, the space size occupied by the sealing layers 70 in the hollow area 10 is effectively reduced, and the influence of the introduction of the sealing layers 70 on the operation of the photosensitive device in the hollow area 10 is effectively avoided, and meanwhile, the narrow frame design is facilitated.
Optionally, referring to fig. 6, the thickness of the ink layer 60 along the direction perpendicular to the plane of the display panel 40 is H1, and H1 is less than or equal to 3 μm and less than or equal to 7 μm. Specifically, this application sets up the thickness of printing ink layer 60 between 3 mu m to 7 mu m, can satisfy the shading demand of printing ink layer 60, avoids appearing the phenomenon of light leak. Meanwhile, on the premise of meeting the shading requirement of the ink layer 60, the thickness of the ink layer 60 is small, and the longitudinal space of the sealing adhesive layer 70 cannot be occupied, so that the space occupied by the sealing adhesive layer 70 is reduced, the width of the sealing adhesive layer 70 is reduced, and the influence of the introduction of the sealing adhesive layer 70 on the work of the photosensitive device in the hollowed-out area 10 is effectively avoided while the narrow frame design is realized.
Optionally, in the display module 100 provided in the embodiment of the present application, the optical density of the ink layer 60 is G, where G is greater than or equal to 3 and less than or equal to 7. The optical density is also called OD value, OD is an abbreviation of optical density, and the optical density is a characteristic for measuring the light shading capability of the material. This application is favorable to effectively promoting the shading performance on printing ink layer 60 with the optical density value setting on printing ink layer 60 between 3 to 7 to be favorable to promoting near fretwork area 10, the shading performance in the region that display panel 40 and backlight unit 30 are borderline, effectively prevent that backlight unit 30's light from leaking to fretwork area 10 and causing the influence to the normal work of the sensitization device in fretwork area 10.
Optionally, fig. 7 is another AA' cross-sectional view of the display module 100 provided in the embodiment of fig. 1, in which the display panel 40 includes an array substrate 41 and a color filter substrate 42 that are oppositely disposed, the display module 100 further includes a lower polarizer 80, and the lower polarizer 80 is located on one side of the array substrate 41 away from the color filter substrate 42; the blind hole 20 also penetrates the lower polarizer 80 in a direction perpendicular to the plane of the display panel 40.
Specifically, with reference to fig. 7, in the present application, a lower polarizer 80 is disposed on a side of the array substrate 41 away from the color filter substrate 42, the blind hole 20 penetrates through the lower polarizer 80 along a direction perpendicular to a plane of the display panel 40, the ink layer 60 and the lower polarizer 80 are disposed on a side of the array substrate 41 away from the color filter substrate 42, and the ink layer 60 is located on a side of the lower polarizer 80 close to the blind hole 20. In this way, the normal processing of the light by the lower polarizer 80 is prevented from being influenced by the ink when the ink is printed on the lower polarizer 80, so that the normal display function of the display panel 40 is not influenced while the light-shielding performance of the ink layer 60 and the sealant layer 70 is ensured. It should be noted that, in order to better achieve the light-shielding effect, referring to fig. 7, an orthographic projection of the edge of the ink layer 60 away from the hollow area 10 on the plane of the color filter substrate 42 is located in an orthographic projection range of the edge of the black matrix 91 away from the hollow area 10 on the plane of the color filter substrate 42. In addition, along the direction perpendicular to the plane of the array substrate, the lower polarizer 80 may cover a portion of the ink layer, so as to achieve reliable fixation of the lower polarizer 80 and the ink layer 60.
Based on the same inventive concept, please refer to fig. 8, fig. 8 is a flowchart illustrating a manufacturing method of the display module 100 according to an embodiment of the present application, and the present application further provides a manufacturing method of the display module 100, where the display module 100 is the display module 100 according to any of the embodiments of the present application, the display module 100 includes a hollow area 10, a first non-display area 11, a display area 12, and a second non-display area 13, the first non-display area 11 at least partially surrounds the hollow area 10, the display area 12 at least partially surrounds the first non-display area 11, and the second non-display area 13 at least partially surrounds the display area 12; the manufacturing method comprises the following steps:
102, manufacturing an ink layer 60 on one side of the display panel 40 by adopting an ink pad printing method, so that the ink layer 60 is at least positioned in the first non-display area 11;
Specifically, referring to fig. 1, fig. 2 and fig. 8, in the manufacturing method of the display module 100 according to the embodiment of the present application, an ink layer 60 is manufactured on one side of the display panel 40 by using an ink pad printing method, and the ink layer 60 at least covers the first non-display area 11; after attaching backlight unit 30 and display module 100, still fill adhesive layer 70 between display panel 40 at the first end 521 of kink 52, make adhesive layer 70 and printing ink layer 60 contact, so, printing ink layer 60 is simultaneously in the direct contact of the first end 521 of adhesive layer 70 and kink 52, has cut off the transmission path that light that backlight unit 30 sent leaks to blind hole 20 in other words to be favorable to promoting display module 100's shading performance. In addition, after the ink layer 60 is introduced, only one sealant layer 70 needs to be introduced, and a plurality of sealant layers 70 are not required to be manufactured for shading, so that the sealant process in the display module 100 is reduced, and the production process and the production cost are saved. In addition, after introducing printing ink layer 60, the width of printing ink layer 60 can obtain accurate control, compares among the prior art multichannel adhesive sealing layer 70, can effectively reduce the width of first non-display area 11 to be favorable to realizing the narrow frame design of display module assembly 100.
Optionally, in step 102, when the ink layer 60 is formed on one side of the display panel 40 by using an ink pad printing method, the ink layer 60 extends from the first non-display area 11 to the blind hole 20.
Specifically, in the manufacturing method of the display module 100 provided in this embodiment, the ink layer 60 covers the second non-display area 13 and also extends into the blind hole 20, and the distance between the edge of the ink layer 60 located in the blind hole 20 and the bent portion 52 is, for example, 0 < D2 is not less than 0.15mm, that is, the width of the ink layer 60 extending into the blind hole 20 is within 0.15mm, so that after the sealant layer 70 is introduced, it is favorable to ensure that the sealant layer 70 can contact the ink layer 60, thereby realizing reliable contact between the ink layer 60, the sealant layer 70 and the bent portion 52, and further being favorable to improving the light shielding performance of the display module 100 in the first non-display area, and preventing light emitted from the backlight module 30 from leaking into the blind hole 20. In addition, this application sets up the width that printing ink layer 60 is located the part in blind hole 20 to when less than or equal to 0.15mm, when promoting light-shielding performance, can also reduce printing ink layer 60 shared space in blind hole 20, avoids causing the influence to the photosensitive device who places in blind hole 20.
Based on the same inventive concept, the present application further provides a display device 200, fig. 9 is a structural diagram of the display device 200 provided in the embodiment of the present application, referring to fig. 9, the display device 200 includes a display module 100, and the display module 100 is the display module 100 provided in the embodiment of the present application. It should be noted that, in the embodiment of the display device 200 provided in the present application, reference may be made to the embodiment of the display module 100, and repeated descriptions are omitted. The display device 200 provided by the present application may be: any product or component with practical functions such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
Optionally, the display device 200 provided in the embodiment of the present application further includes a camera and/or an optical sensor 90, and the camera and/or the optical sensor 90 is located in the blind hole 20. Specifically, the camera and/or the optical sensor 90 are disposed in the blind hole 20, so that the requirements of consumers on the display device in social development are met, and the practicability of the display device is improved. In addition, set up camera and/or optical sensor 90 in blind hole 20, still be favorable to realizing the display effect of full face screen, be favorable to display device's high integration.
In summary, the display module, the manufacturing method thereof and the display device provided by the invention at least achieve the following beneficial effects:
in the display module assembly, the manufacturing method thereof and the display device provided by the application, the display module assembly comprises the blind hole in the hollow area, the blind hole penetrates through the backlight module assembly along the direction perpendicular to the plane where the display panel is located, the blind hole does not penetrate through the display panel, and the blind hole and one side of the display panel facing the backlight module assembly form an accommodating space. The backlight module comprises a back frame, the back frame comprises a substrate and a bending part, the substrate is parallel to the display panel, the bending part bends towards the display panel, and the first end of the bending part is located on one side of the second end of the bending part close to the display panel. Especially, the display module assembly still includes printing ink layer and sealing glue layer, and the printing ink layer covers first non-display area, and the sealing glue layer is filled between the first end of kink and display panel and is contacted with the printing ink layer. The setting of printing ink layer and sealing compound layer has played effectual shading effect, has avoided the phenomenon that the light that backlight unit sent leaks in the blind hole. Moreover, after the ink layer is introduced, only one sealing adhesive layer is needed to be added, and a plurality of sealing adhesive layers are not needed to be manufactured for shading, so that the sealing adhesive process in the display module is reduced, and the production process and the production cost are favorably saved. In addition, after the ink layer is introduced, the width of the ink layer can be accurately controlled, and compared with a plurality of sealing glue layers in the prior art, the width of a first non-display area can be effectively reduced, so that the narrow frame design is favorably realized.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (12)
1. A display module, comprising: the display device comprises a hollow-out area, a first non-display area, a display area and a second non-display area, wherein the first non-display area at least semi-surrounds the hollow-out area, the display area at least semi-surrounds the first non-display area, and the second non-display area at least semi-surrounds the display area;
the display module comprises a blind hole positioned in the hollow area, a backlight module and a display panel positioned on one side of a light-emitting surface of the backlight module; the blind hole penetrates through the backlight module along a direction perpendicular to the plane of the display panel, and an accommodating space is formed by the blind hole and one side of the display panel facing the backlight module;
the backlight module comprises a back frame, the back frame comprises a substrate and a bent part, the bent part is crossed with the extending direction of the substrate, the bent part is bent towards the display panel, and the bent part forms the hole wall of the blind hole; the bending part comprises a first end and a second end which are oppositely arranged along the plane direction perpendicular to the display panel, the second end is connected with the substrate, and the first end is positioned on one side of the second end close to the display panel;
the display module further comprises an ink layer and a sealing adhesive layer, wherein the ink layer and the sealing adhesive layer are both positioned on one side of the display panel facing the backlight module; the ink layer covers the first non-display area, and the sealing adhesive layer is filled between the first end and the display panel and is in contact with the ink layer.
2. The display module according to claim 1, wherein the ink layer includes a first edge and a second edge opposite to each other in a direction of a plane of the display panel, the first edge is located on a side of the second edge away from the blind hole, a distance between the first edge and the second edge is D1, and D1 is greater than or equal to 0.25 mm.
3. The display module according to claim 1, wherein the ink layer and the bent portion overlap each other along an orthogonal projection perpendicular to a plane of the display panel.
4. The display module according to claim 1, wherein the ink layer extends from the first non-display area to the blind hole, and a distance between an edge of the ink layer in the blind hole and the bent portion is D2, where 0 < D2 ≤ 0.15 mm.
5. The display module according to claim 4, wherein the sealant layer covers the ink layer in the hollow area; along the direction of the plane of the display panel, the width of the part of the sealing glue layer, which is located in the hollow area, is D3, wherein D3 is more than or equal to 0 and is less than or equal to 0.25 mm.
6. The display module as claimed in claim 1, wherein the thickness of the ink layer in a direction perpendicular to the plane of the display panel is H1, and H1 is less than or equal to 3 μm and less than or equal to 7 μm.
7. The display module according to claim 1, wherein the display panel comprises an array substrate and a color film substrate which are arranged oppositely, and the display module further comprises a lower polarizer which is located on one side of the array substrate away from the color film substrate; the blind hole also penetrates through the lower polarizer along the direction perpendicular to the plane of the display panel.
8. The display module of claim 1, wherein the optical density of the ink layer is G, and G is greater than or equal to 3 and less than or equal to 7.
9. A method for fabricating the display module according to any one of claims 1 to 8, wherein the display module comprises a hollow-out region, a first non-display region, a display region and a second non-display region, the first non-display region at least partially surrounds the hollow-out region, the display region at least partially surrounds the first non-display region, and the second non-display region at least partially surrounds the display region;
the manufacturing method comprises the following steps:
providing the display panel;
manufacturing the ink layer on one side of the display panel by adopting an ink pad printing method, so that the ink layer is at least positioned in the first non-display area;
providing the backlight module, and attaching the display panel to a light-emitting surface of the backlight module;
and filling a sealing adhesive layer between the first end of the bent part and the display panel, and enabling the sealing adhesive layer to be in contact with the ink layer.
10. The method of claim 9, wherein the ink layer is formed on one side of the display panel by pad printing, and the ink layer extends from the first non-display area to the blind hole.
11. A display device, comprising the display module of any one of claims 1 to 8.
12. The display device according to claim 11, further comprising a camera and/or an optical sensor, the camera and/or the optical sensor being located in the blind hole.
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Application publication date: 20200214 |