CN110441937B - Screen laminating method and display screen - Google Patents
Screen laminating method and display screen Download PDFInfo
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- CN110441937B CN110441937B CN201910753253.9A CN201910753253A CN110441937B CN 110441937 B CN110441937 B CN 110441937B CN 201910753253 A CN201910753253 A CN 201910753253A CN 110441937 B CN110441937 B CN 110441937B
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- plate glass
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- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000010030 laminating Methods 0.000 title claims abstract description 49
- 239000003292 glue Substances 0.000 claims abstract description 119
- 230000003287 optical effect Effects 0.000 claims abstract description 114
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 239000005357 flat glass Substances 0.000 claims abstract description 48
- 239000011248 coating agent Substances 0.000 claims abstract description 27
- 238000000576 coating method Methods 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000002093 peripheral effect Effects 0.000 claims abstract description 15
- 239000006059 cover glass Substances 0.000 claims description 70
- 239000012790 adhesive layer Substances 0.000 claims description 32
- 239000012945 sealing adhesive Substances 0.000 claims description 29
- 239000010410 layer Substances 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 claims description 9
- 239000002390 adhesive tape Substances 0.000 claims description 8
- 238000007790 scraping Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 210000000746 body region Anatomy 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 10
- 239000004568 cement Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000006748 scratching Methods 0.000 description 4
- 230000002393 scratching effect Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
- B05D1/322—Removable films used as masks
- B05D1/325—Masking layer made of peelable film
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
-
- 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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
The invention provides a screen laminating method and a display screen, wherein the screen laminating method comprises the following steps: coating liquid optical glue on the cover plate glass; curing the liquid optical glue to form an optical glue layer; coating structural edge sealing glue on the cover plate glass along the peripheral point of the optical glue layer; and attaching the display module to the cover plate glass. The invention provides a screen laminating method and a display screen, which can greatly save the processing time and improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of display screens, in particular to a screen laminating method and a display screen.
Background
In the large-size touch display technology, in a common structural scheme, an air gap (air gap) is formed between a touch module capacitive screen (TP) and a liquid crystal display screen, light emitted by the display screen passes through different refractive indexes, reflection waste is more, transmittance is reduced, and the problems of white display picture, poor contrast and definition effect and the like exist.
In order to improve the problem, the screen bonding method in the related art generally adopts a full bonding process, and a glue medium with a refractive index close to that of glass is used for filling the air medium in the middle, so that the display effect of the picture is greatly improved. Specifically, adopt liquid optical cement coating on the glass cover, with liquid optical cement solidification again, then vacuum laminating display module assembly, but because the viscidity of liquid optical cement glue is weak, be difficult to fixed great stress display module assembly, consequently need adopt a structure to glue around the optical cement solidification layer and strengthen, the structure of prior art is glued and is beaten with the manual periphery of syringe needle after the full laminating generally.
The mode of knotting the structure glue by the manual periphery of the needle head has long whole process period and low efficiency, and is easy to generate touch scratch to cause the display screen to generate badness.
Disclosure of Invention
The invention provides a screen laminating method and a display screen, which can greatly save the processing time and improve the production efficiency.
The invention provides a screen laminating method on one hand, which comprises the following steps:
coating liquid optical glue on the cover plate glass;
curing the liquid optical glue to form an optical glue layer;
applying a structural edge sealing adhesive to the peripheral edge area of the cover glass along the peripheral point of the optical adhesive layer;
and bonding the display module with the cover plate glass.
In the above method for attaching a screen, the step of coating the liquid optical glue on the cover glass specifically includes:
and coating the liquid optical glue on the cover plate glass by adopting glue dispensing equipment, and then leveling the liquid optical glue by adopting glue scraping equipment.
In the above screen attaching method, curing the liquid optical glue to form the optical glue layer specifically includes:
and placing the cover plate glass on a heating platform, and heating to a preset heating temperature so that the liquid optical glue is cured to form an optical glue layer.
In the screen attaching method, the applying the structural edge sealing adhesive to the peripheral edge region of the cover glass along the peripheral point of the optical adhesive layer specifically includes:
placing the cover plate glass on a laminating machine, and coating a structural edge sealing adhesive on the peripheral edge area of the cover plate glass except for the specified clearance area along the peripheral point of the optical adhesive layer by an automatic adhesive dispensing mechanism on the laminating machine;
wherein, the periphery of the optical adhesive layer is completely covered or partially covered by the structure edge sealing adhesive.
According to the screen attaching method, attaching the display module to the cover glass specifically comprises:
and rolling and laminating the display module and the cover plate glass by using the laminating machine.
The screen attaching method further comprises the following steps of after attaching the display module to the cover glass: and defoaming the display module and the cover plate glass which are subjected to the laminating operation by using a defoaming machine.
The screen attaching method as described above, after the defoaming is performed on the display module and the cover glass that have completed the attaching operation by the defoaming machine, further includes: and packaging the display module and the cover plate glass and checking whether the package is qualified.
The screen attaching method further comprises the following steps of before the liquid optical glue is coated on the cover glass: adhering adhesive tape on the cover glass to define a display area for coating the liquid optical glue;
after the liquid optical glue is cured to form the optical glue layer, the method further comprises the following steps: and removing the adhesive tape.
According to the screen laminating method provided by the embodiment of the invention, after liquid optical glue is coated and cured on the cover plate glass, the structural edge sealing glue is coated at the edge position of the cover plate glass, then the laminating operation of the cover plate glass and the display module is carried out, when the display module is not laminated, the cover plate glass is not shielded, the coating of the structural edge sealing glue can be greatly facilitated, compared with the step of laminating the display module and the cover plate glass firstly and then manually knotting to construct the edge sealing glue in the prior art, the problem of inconvenient operation is effectively avoided, the processing time can be saved, the production efficiency is improved, and the problem of low yield caused by scratching the display module is avoided. Furthermore, an automatic glue dispensing mechanism and a laminating machine are adopted for glue dispensing and laminating operation, so that the problem of poor consistency and low efficiency of manual glue dispensing can be solved.
The invention also provides a display screen manufactured based on the screen attaching method, which comprises the following steps:
the display module comprises cover plate glass and a display module, wherein the cover plate glass is connected with the display module through an optical adhesive layer and a structure edge sealing adhesive, and the structure edge sealing adhesive is located on the periphery of the optical adhesive layer.
Further, the periphery of the optical adhesive layer is completely or partially covered by the structural edge sealing adhesive.
According to the display screen provided by the invention, the optical adhesive layer with the refractive index similar to that of the cover plate glass is adopted to fill the air medium between the cover plate glass and the display module, so that the display effect of a picture is greatly improved, and meanwhile, the connection relation between the cover plate glass and the display module is strengthened by adopting the structural edge sealing adhesive around the optical adhesive layer, so that the reliable bonding is ensured and the picture display is not influenced. Furthermore, the display screen is manufactured by a method of coating the structure edge sealing glue first and then attaching the structure edge sealing glue, so that the manufacturing time can be saved, the production efficiency can be improved, and the problem of low yield caused by scratching the display module can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a screen attaching method according to an embodiment of the present invention;
fig. 2 is a schematic front structural diagram of a display screen according to an embodiment of the present invention;
FIG. 3 is a schematic side view of a display screen provided in an embodiment of the present invention in a screen bonding process;
FIG. 4 is a schematic side view of a display screen provided in an embodiment of the present invention in a further process of screen attachment;
fig. 5 is a schematic structural diagram of a display screen according to an embodiment of the present invention;
fig. 6 is a schematic view of another structure of a display screen according to an embodiment of the present invention.
Reference numerals:
100-cover glass;
200-optical glue layer;
300-structural edge sealing glue;
400-display module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is described below in connection with specific embodiments with reference to the following drawings.
Example one
Fig. 1 is a flowchart of a screen attaching method according to an embodiment of the present invention, fig. 2 is a schematic front structure diagram of a display screen according to an embodiment of the present invention, fig. 3 is a schematic side view structure diagram of a display screen according to an embodiment of the present invention in a screen attaching process, fig. 4 is a schematic side view structure diagram of a display screen according to an embodiment of the present invention in a further screen attaching process, and referring to fig. 1 to fig. 4, a screen attaching method according to an embodiment of the present invention is provided.
The screen attaching method provided by the embodiment of the invention comprises the following steps:
s101, coating liquid optical glue on the cover glass 100.
The cover glass 100 is used to form a display screen together with the display module 400, wherein the cover glass 100 may be a touch module capacitive screen cover plate, and at this time, the display screen has a touch function. When having the air gap between cover plate glass 100 and the display module assembly 400, the light that display module assembly 400 sent passes through different refracting indexes, and the reflection is extravagant more, and the transmissivity reduces to lead to that the display screen is whitish, contrast and definition effect subalternation problem.
In order to improve the image display effect, in this embodiment, the liquid optical glue with a refractive index similar to that of the cover glass 100 is used to fill the air medium between the cover glass 100 and the display module 400, so as to greatly improve the image display effect.
Specifically, the liquid optical glue is coated on the main area of the cover glass 100, and the main area corresponds to the display area of the display module 400, so as to ensure that the overall contrast and definition of the display screen are improved.
Further, the step of coating the liquid optical cement on the cover glass 100 specifically includes: the liquid optical glue is coated on the cover glass 100 by a glue dispensing device, and then the liquid optical glue is scraped off by a glue scraping device.
When coating the liquid optical glue, the cover glass 100 should be horizontally placed on the operation platform, the liquid optical glue is coated on the cover glass 100 by using a glue dispensing device, and the thickness of the liquid optical glue is uniform by using a glue scraping device.
Optionally, the liquid optical cement is coated on the cover glass 100 to a thickness of 0.2-1.2 mm.
S102, curing the liquid optical glue to form the optical glue layer 200.
The liquid optical glue is in a liquid state when being coated on the cover glass 100, and if the display module 400 is covered on the cover glass 100 when the optical glue is in the liquid state, the liquid optical glue can be extruded and deformed, so that the liquid optical glue is solidified to form the optical glue layer 200 after standing for a period of time, the optical glue layer 200 is used for bonding the cover glass 100 and the display module 400, and the uniformity of a gap between the cover glass 100 and the display module 400 can be ensured.
Further, curing the liquid optical glue to form the optical glue layer 200 specifically includes: the cover glass 100 is placed on a heating platform and heated to a preset heating temperature, so that the liquid optical glue is cured to form the optical glue layer 200.
After the liquid optical cement is uniformly coated on the cover glass 100, the cover glass 100 is heated to cure the liquid optical cement at a preset heating temperature, wherein the preset heating temperature is 55-65 °.
It should be noted that, in order to avoid the liquid optical glue flowing deformation caused by shaking and other actions during the process of moving the cover glass 100, the heating platform may be used as an operation platform when applying the liquid optical glue.
In addition, the heating source adopted by the heating platform is not specifically limited in this embodiment, and in order to ensure that the curing operation of the liquid optical glue is always within the preset heating temperature range, a temperature sensor and other devices should be arranged to accurately control the heating temperature of the heating platform.
And S103, applying the structural edge sealing adhesive 300 to the peripheral edge area of the cover glass 100 along the peripheral point of the optical adhesive layer 200.
Since the liquid optical glue has weak viscosity, it is difficult to fix the cover glass 100 and the display module 400, and therefore, the structural edge sealing glue 300 is required to be used around the optical glue layer 200 to strengthen the connection relationship between the cover glass 100 and the display module 400.
The viscidity of structure joint strip 300 is greater than the viscidity of liquid optical glue, but the transmissivity of structure joint strip 300 differs far away with the transmissivity of cover plate glass 100, if set up structure joint strip 300 in the display area, then can influence the display effect of display screen. Therefore, in the present embodiment, the structural edge sealing adhesive 300 is disposed on the peripheral edge region of the cover glass 100 and is dispensed along the periphery of the optical adhesive layer 200.
Further, the point coating of the structural edge sealing adhesive 300 on the cover glass 100 along the periphery of the optical adhesive layer 200 specifically includes:
placing the cover glass 100 on a laminating machine, and coating the structural edge sealing glue 300 on the peripheral edge area of the cover glass 100 except the specified clearance area along the peripheral point of the optical glue layer 200 by an automatic glue dispensing mechanism on the laminating machine;
the periphery of the optical adhesive layer 200 is covered by the structural edge sealing adhesive 300, or partially covered.
After the cover glass 100 is placed on the laminating machine, the automatic dispensing mechanism is used to dispense the structural edge sealing adhesive 300. Specifically, fig. 5 is another schematic structural diagram of the display screen provided by the embodiment of the present invention, fig. 6 is another schematic structural diagram of the display screen provided by the embodiment of the present invention, and referring to fig. 2, fig. 5 and fig. 6, a periphery of the optical adhesive layer 200 completely covers the structural edge sealing adhesive 300, or one side of the optical adhesive layer 200 does not cover the structural edge sealing adhesive 300, or one side of the optical adhesive layer 200 is partially and discontinuously provided with the structural edge sealing adhesive 300. It should be noted that the predetermined clearance area on the cover glass 100 must not be coated with the structural edge sealing adhesive 300 to avoid affecting the function of the display screen.
The automatic glue dispensing mechanism is used for dispensing glue, so that the problems of yield and efficiency caused by manual glue dispensing can be reduced, the glue dispensing is more uniform, and the consistency is good.
And S104, attaching the display module 400 to the cover glass 100.
In the related technology, the screen attaching method comprises the steps of firstly coating liquid optical glue on cover plate glass and solidifying, then attaching a display module, and finally manually tying the periphery of the optical glue layer by using a needle head to form edge sealing glue. The whole process is long in period and low in efficiency, and the display screen is poor due to the fact that the display screen is easily scratched.
In this embodiment, after the liquid optical glue is coated on the cover glass 100 and cured, the operation of coating the structural edge sealing glue 300 is performed first, and then the display module 400 is attached to the cover glass 100. When the display module 400 is not attached, the cover glass 100 is not shielded, so that the coating structure edge sealing adhesive 300 can be greatly conveniently coated.
Further, the laminating of display module 400 and cover glass 100 specifically includes: and rolling and laminating the display module 400 and the cover glass 100 by using a laminating machine.
Wherein, the rigging machine is the screen laminating professional equipment, through computer control operation, easy operation is reliable, and the precision of position has been guaranteed in accurate slide rail transmission, compares in artifical laminating and has advantages such as work is steady, the laminating is level and smooth.
The rigging machine adopts automatic point gum machine to construct and carries out the point and glues, and reducible manual yield and the efficiency problem of gluing the bring, and the roll-in laminating operation that the rigging machine goes on compares in artificial laminating operation, has also improved laminating efficiency and yield greatly.
In a feasible embodiment, the laminating machine is an overturning rolling type laminating machine, and the equipment is provided with an overturning platform, an uploading platform, a vacuum adsorption pump, an elastic roller, a structural edge sealing glue dispensing mechanism, a pressure adjusting mechanism and the like.
The glue dispensing process by adopting the roll-over laminating machine comprises the following steps: firstly, the cover plate glass solidified with the optical adhesive layer is placed on an overturning platform of the laminating machine in a flatwise mode through a jig, then relative position measurement and confirmation are conducted through a camera image sensor, a special dispensing machine on laminating machine equipment conducts dispensing along the position (a certain distance away from the optical adhesive layer) grabbed by the image sensor, and dispensing graphs can be set to be various according to requirements.
The steps of the laminating process by adopting the roll-over laminating machine are as follows: after cover plate glass accomplished the point and glued, the upset platform overturns, counterpoints with the display module assembly of lower platform and reaches the regulation size, and the running roller that has telescopic machanism can be in the same place display module assembly and apron subassembly pressfitting along the laminating direction to guarantee that the structure joint edge glues intact connection cover plate glass and display module assembly, equipment playback at last, the laminating technology is accomplished.
In addition to the above embodiments, in this embodiment, after the display module 400 is attached to the cover glass 100, the method further includes: the display module 400 and the cover glass 100 after the attachment operation are defoamed by a defoaming machine.
After the display module 400 and the cover glass 100 are attached to each other by the attaching machine, they may be sent to a defoaming machine for defoaming, so as to eliminate small attaching bubbles and improve the yield of products.
On the basis of the above embodiment, further, in this embodiment, after the defoaming is performed on the display module 400 and the cover glass 100 after the bonding operation is completed by using the defoaming machine, the method further includes: the display module 400 and the cover glass 100 are packaged and checked to see if the packaging is qualified.
On the basis of the above embodiment, further, in this embodiment, before coating the liquid optical cement on the cover glass, the method further includes: attaching an adhesive tape on the cover glass 100 to define a display area for applying a liquid optical glue; after the liquid optical glue is cured to form the optical glue layer 200, the method further includes: and removing the adhesive tape.
The adhesive tape adhered to the cover glass 100 defines a display area, which is beneficial to coating of the liquid optical adhesive and has a covering effect, so that the liquid optical adhesive can be effectively prevented from flowing to a non-display area. After the liquid optical glue is cured, the adhesive tape is removed to facilitate the next operation of coating the structure edge sealing adhesive 300.
According to the screen laminating method provided by the embodiment of the invention, after liquid optical glue is coated and cured on the cover plate glass, the structural edge sealing glue is coated at the edge position of the cover plate glass, then the laminating operation of the cover plate glass and the display module is carried out, when the display module is not laminated, the cover plate glass is not shielded, the coating of the structural edge sealing glue can be greatly facilitated, compared with the step of laminating the display module and the cover plate glass firstly and then manually knotting to construct the edge sealing glue in the prior art, the problem of inconvenient operation is effectively avoided, the processing time can be saved, the production efficiency is improved, and the problem of low yield caused by scratching the display module is avoided. Furthermore, an automatic glue dispensing mechanism and a laminating machine are adopted for glue dispensing and laminating operation, so that the problem of poor consistency and low efficiency of manual glue dispensing can be solved.
Example two
Referring to fig. 2 and 4, an embodiment of the present invention provides a display screen, where the display screen is manufactured based on the screen attaching method according to the above embodiment, and the method includes: the cover glass 100 and the display module 400 are connected through the optical adhesive layer 200 and the structural edge sealing adhesive 300 between the cover glass 100 and the display module 400, and the structural edge sealing adhesive 300 is located on the periphery of the optical adhesive layer 200.
Specifically, the cover glass 100 is used to form a display screen together with the display module 400, wherein the cover glass 100 may be a touch module capacitive screen cover plate, and at this time, the display screen has a touch function.
In order to solve the problems of white display image, poor contrast and definition effects and the like caused by the air gap between the cover glass 100 and the display module 400, in the embodiment, the optical adhesive layer 200 with the refractive index close to that of the cover glass 100 is used for filling the air medium between the cover glass 100 and the display module 400, so as to greatly improve the display effect of the image.
The optical adhesive layer 200 is located in the display area of the display module 400 to ensure that the contrast and the definition of the whole display frame are improved.
Since the adhesive property of the optical adhesive layer 200 is weak, it is difficult to fix the cover glass 100 and the display module 400, and therefore, the structural edge sealing adhesive 300 is required to be used around the optical adhesive layer 200 to strengthen the connection relationship between the cover glass 100 and the display module 400.
The viscidity of structure joint strip 300 is greater than the viscidity of liquid optical glue, but the transmissivity of structure joint strip 300 differs far away with the transmissivity of cover plate glass 100, if set up structure joint strip 300 in the display area, then can influence the display effect of display screen. Therefore, in the present embodiment, the structural edge sealing adhesive 300 is disposed on the peripheral edge region, i.e., the non-display region, of the cover glass 100 and is dispensed along the periphery of the optical adhesive layer 200.
Further, the periphery of the optical adhesive layer is completely or partially covered by the structural edge sealing adhesive. Referring to fig. 2, 5 and 6, the periphery of the optical adhesive layer 200 completely covers the structural edge sealing adhesive 300, or one side of the optical adhesive layer 200 does not cover the structural edge sealing adhesive 300, or one side of the optical adhesive layer 200 is partially provided with the structural edge sealing adhesive 300 intermittently.
The display screen is used for electronic equipment such as watches, smart phones, televisions, video disc players, video recorders, computers, mobile communication products and the like. The display screen arranged on the electronic equipment can play a role of displaying pictures or provide touch operation.
According to the display screen provided by the embodiment of the invention, the optical adhesive layer with the refractive index similar to that of the cover plate glass is adopted to fill the air medium between the cover plate glass and the display module, so that the display effect of a picture is greatly improved, meanwhile, the structural edge sealing adhesive is adopted at the periphery of the optical adhesive layer to strengthen the connection relation between the cover plate glass and the display module, and the picture display is not influenced while the bonding reliability is ensured. Furthermore, the display screen is manufactured by a method of coating the structure edge sealing glue first and then attaching the structure edge sealing glue, so that the manufacturing time can be saved, the production efficiency can be improved, and the problem of low yield caused by scratching the display module can be avoided.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, are used to indicate an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the position or element referred to must have a particular orientation, be of particular construction and operation, and thus, are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A screen attaching method is characterized by comprising the following steps:
coating liquid optical glue on a main body area of the cover plate glass, wherein the refractive index of the liquid optical glue is close to that of the cover plate glass, and the main body area of the cover plate glass is an area corresponding to a display area of a display module;
curing the liquid optical glue to form an optical glue layer;
placing the cover plate glass on an attaching machine, and coating structural edge sealing glue on the peripheral edge area of the cover plate glass except for the specified clearance area along the peripheral point of the optical glue layer by an automatic glue dispensing mechanism on the attaching machine;
the periphery of the optical adhesive layer is completely or partially covered by the structure edge sealing adhesive;
and attaching the display module to the cover plate glass.
2. The screen attaching method according to claim 1, wherein the step of applying the liquid optical glue to the main body region of the cover glass specifically comprises:
and coating the liquid optical glue on the cover plate glass by adopting glue dispensing equipment, and scraping the liquid optical glue by adopting glue scraping equipment.
3. The screen attaching method according to claim 1, wherein the step of curing the liquid optical glue to form the optical glue layer specifically comprises:
and placing the cover plate glass on a heating platform, and heating to a preset heating temperature so that the liquid optical glue is cured to form an optical glue layer.
4. The screen attaching method according to claim 1, wherein the attaching the display module to the cover glass specifically comprises:
and rolling and laminating the display module and the cover plate glass by adopting the laminating machine.
5. The screen attaching method according to any one of claims 1 to 4, further comprising, after attaching the display module to the cover glass: and defoaming the display module and the cover plate glass which are subjected to the laminating operation by using a defoaming machine.
6. The screen attaching method according to claim 5, further comprising, after defoaming the display module and the cover glass, which have been attached, by using a defoaming machine: and checking the appearance, the function and the display effect of the display module and the cover plate glass, packaging and checking whether the package is qualified.
7. The screen attaching method according to claim 1, further comprising, before applying the liquid optical glue to the cover glass: adhering adhesive tape on the cover glass to define a display area for coating the liquid optical glue;
after the liquid optical glue is cured to form the optical glue layer, the method further comprises the following steps: and removing the adhesive tape.
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| CN111799390A (en) * | 2020-06-02 | 2020-10-20 | 深圳市华星光电半导体显示技术有限公司 | Display device and method for attaching display panel and glass cover plate |
| CN113803333A (en) * | 2020-06-11 | 2021-12-17 | 中国商用飞机有限责任公司 | Assembly method of shaft piece and mounting seat, shaft piece assembly and bushing assembly |
| CN111966244A (en) * | 2020-08-20 | 2020-11-20 | 业成光电(无锡)有限公司 | Touch display screen and laminating method thereof |
| CN115035810A (en) * | 2021-03-05 | 2022-09-09 | 江西华创触控科技有限公司 | LED film screen |
| CN113653714A (en) * | 2021-08-11 | 2021-11-16 | 翔实光电科技(昆山)有限公司 | Full-lamination method, touch display module and full-lamination system |
| CN113905114A (en) * | 2021-09-03 | 2022-01-07 | Oppo广东移动通信有限公司 | Electronic equipment, display screen assembly and attaching method thereof |
| CN114589076A (en) * | 2022-03-02 | 2022-06-07 | 深圳市中欣科技有限公司 | OCR (optical character recognition) double-component thermosetting silica gel dry-lamination process and device |
| CN115359727A (en) * | 2022-09-22 | 2022-11-18 | 苏州桐力光电股份有限公司 | Screen attaching method, display screen and electronic equipment |
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