CN107490543B - Device for simulating adhesion of double-sided adhesive tape and adhesion determination method - Google Patents
Device for simulating adhesion of double-sided adhesive tape and adhesion determination method Download PDFInfo
- Publication number
- CN107490543B CN107490543B CN201710814227.3A CN201710814227A CN107490543B CN 107490543 B CN107490543 B CN 107490543B CN 201710814227 A CN201710814227 A CN 201710814227A CN 107490543 B CN107490543 B CN 107490543B
- Authority
- CN
- China
- Prior art keywords
- adsorption plate
- adsorbed layer
- double
- force
- adsorption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Adhesive Tapes (AREA)
Abstract
The invention discloses a device for simulating the adhesive force of a double-sided tape and an adhesive force determining method, which are used for determining the adhesive force of two sides of the double-sided tape for adhering a display panel and a backlight source and prolonging the service life of a display module. The device for simulating the adhesion force of the double-sided tape comprises: the first adsorption plate has adjustable adsorption force; the second adsorption plate is adjustable in adsorption force; an adsorbed layer located between the first and second adsorption plates. Through the first adsorption plate and the second adsorption plate that set up and by the adsorbed layer, can simulate display panel, backlight and double-sided tape among the display module respectively, through peeling off experiment and reliance experiment, obtain the first adhesive force between double-sided tape and the display panel and the second adhesive force between double-sided tape and the backlight.
Description
Technical Field
The invention relates to the technical field of display preparation, and discloses a device for simulating the adhesive force of a double-sided adhesive tape and an adhesive force determination method.
Background
Traditional display module assembly is when preparing, need to pass through black opaque double-sided tape with display panel and backlight and bond together, display panel is pasted to double-sided tape's one side, the backlight is pasted to the another side, usually be the difference with the bonding area and the dynamics of bonding design on double-sided tape two sides, the adhesion force that double-sided tape is used for pasting the one side of backlight is greater than double-sided tape and is used for pasting display panel's one side, like this when later maintenance dismantles, just can make double-sided tape and display panel separation, the backlight that has double-sided tape can be retrieved and is recycled.
However, in actual production, due to the diversification of the size of the display module, the adhesion force of the two sides of the double-sided tape is often designed unreasonably, which easily causes the display module to be separated from the backlight after being used for a period of time, or when being disassembled, the double-sided tape is separated from the backlight, which causes the backlight to be damaged and cannot be recycled, thereby reducing the maintenance rate.
Disclosure of Invention
The invention provides a device for simulating the bonding force of a double-sided tape and a bonding force determining method, which are used for determining the bonding force of two sides of the double-sided tape for adhering a display panel and a backlight source, prolonging the service life of a display module and improving the maintenance efficiency.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a device for simulating the adhesive force of a double-sided adhesive tape, which comprises:
the first adsorption plate has adjustable adsorption force;
the second adsorption plate is adjustable in adsorption force;
an adsorbed layer located between the first and second adsorption plates.
According to the device for simulating the bonding force of the double-sided tape, provided by the invention, the display panel, the backlight source and the double-sided tape in the display module can be respectively simulated through the arranged first adsorption plate, the second adsorption plate and the adsorbed layer, the first bonding force between the double-sided tape and the display panel and the second bonding force between the double-sided tape and the backlight source are obtained through a stripping experiment and a reliability experiment, and the first bonding force and the second bonding force are respectively equal to: in the peeling test, the first adsorption plate and the adsorbed layer are kept separated, and the second adsorption plate and the adsorbed layer are not separated, and in the reliability test, when the first adsorption plate and the adsorbed layer, and the second adsorption plate and the adsorbed layer are not separated, the first adsorption plate and the second adsorption plate exert forces on the adsorbed layer respectively. The display panel and the backlight source are not attached together, a simulation test is carried out through a device for simulating the adhesive force of the double-sided tape, the adhesive force of two sides of the double-sided tape is obtained, and then the display panel and the backlight source are attached and assembled according to the obtained result. Therefore, the phenomenon that the double-sided adhesive tape and the display panel are separated from the backlight source in a peeling experiment due to unreasonable bonding force of two sides of the selected double-sided adhesive tape can be avoided, and the phenomenon that the display panel and the backlight source are separated when the display panel and the backlight source which are assembled together work in a later high-temperature high-humidity environment can also be avoided.
Therefore, the device for simulating the bonding force of the double-sided adhesive tape can determine the bonding force of two sides of the double-sided adhesive tape for adhering the display panel and the backlight source, the service life of the display module is prolonged, and the maintenance efficiency is improved.
In some optional embodiments, the adsorbed layer is filled with metal particles;
the first adsorption plate includes: the power supply device comprises a first power supply unit, a first metal part and a first electromagnetic coil, wherein the output current of the first power supply unit is adjustable, the first metal part is wound on the first metal part, and two ends of the first electromagnetic coil are respectively connected with a first electrode and a second electrode of the first power supply unit; a second metal portion that is electromagnetically induced with the first metal portion that generates magnetism after energization, the second metal portion being used to attract the attracted layer to a surface thereof facing the attracted layer;
the second adsorption plate includes: the output current of the second power supply unit is adjustable, the third metal part is wound on a second electromagnetic coil, and two ends of the second electromagnetic coil are respectively connected with a first electrode and a second electrode of the second power supply unit; and a fourth metal portion that is electromagnetically induced with the third metal portion that generates magnetism after energization, the fourth metal portion being configured to attract the attracted layer to a surface of the fourth metal portion facing the attracted layer. Through first solenoid and second solenoid circular telegram for first metal portion and third metal portion all produce the electromagnetism, and second metal portion and fourth metal portion have magnetism because electromagnetic induction, and second metal portion and fourth metal portion can adsorb the intraformational metal particle of adsorbed, and through changing the size of letting in electric current in first solenoid and the second solenoid, can change the adsorption affinity size between second metal portion and the adsorbed layer and the adsorption affinity size between fourth metal portion and the adsorbed layer.
In some optional embodiments, a surface of the adsorbed layer facing the fourth metal portion has a roughness greater than a roughness of a surface of the adsorbed layer facing the second metal portion. The roughness is different so that the adsorption force between the adsorbed layer and the fourth metal part and the second metal part is different.
In some optional embodiments, the fourth metal portion has a frame structure with a hollow middle portion.
In some optional embodiments, the length of a region where each side frame of the fourth metal portion contacts the adsorbed layer is 0.1 mm to 0.4 mm smaller than the length of the frame of the corresponding side of the display panel to be bonded.
In some optional embodiments, the above apparatus for simulating double-sided tape adhesion further comprises:
a pry arm, a first separation arm, and a second separation arm, wherein the pry arm, the first separation arm, and the second separation arm are configured to apply a separation force to the first adsorption plate, the adsorbed layer, and the second adsorption plate that are adsorbed together in the peeling test. Is convenient for peeling experiment.
The invention also provides a bonding force determination method based on the device for simulating the bonding force of the double-sided adhesive tape, wherein the device comprises the following steps: the adsorption device comprises a first adsorption plate with adjustable adsorption force, a second adsorption plate with adjustable adsorption force, and an adsorbed layer positioned between the first adsorption plate and the second adsorption plate;
the adhesion determination method includes: obtaining a first adhesive force between the double-sided tape and the display panel and a second adhesive force between the double-sided tape and the backlight source through a peeling test and a reliability test, wherein the first adhesive force and the second adhesive force are respectively equal to: the first adsorption plate and the second adsorption plate are respectively applied with a force on the adsorbed layer when the first adsorption plate and the adsorbed layer are kept separated and the second adsorption plate and the adsorbed layer are not separated in the peeling experiment, and the first adsorption plate and the second adsorption plate are respectively kept not separated from each other in the reliability experiment.
In some alternative embodiments, the step of obtaining, through a peeling test and a reliability test, a first adhesion between the double-sided tape and the display panel and a second adhesion between the double-sided tape and the backlight source specifically includes:
the first adsorption plate and the second adsorption plate respectively adsorb adsorbed layers;
applying a set separation force between the first adsorption plate and the adsorbed layer and between the second adsorption plate and the adsorbed layer, adjusting the adsorption force of the first adsorption plate and the second adsorption plate until the first adsorption plate is separated from the adsorbed layer and the second adsorption plate is not separated from the adsorbed layer, recording the force applied to the adsorbed layer by the first adsorption plate at the moment as a first adsorption force, and recording the force applied to the adsorbed layer by the second adsorption plate as a second adsorption force;
the first adsorption plate adsorbs the adsorbed layer with the first adsorption force, the second adsorption plate adsorbs the adsorbed layer with the second adsorption force, the reliability test is carried out on the first adsorption plate, the second adsorption plate and the adsorbed layer which are adsorbed together, the first adsorption force and the second adsorption force are adjusted with the same adjustment ratio until the first adsorption plate and the adsorbed layer as well as the second adsorption plate and the adsorbed layer are not separated, the force exerted on the adsorbed layer by the first adsorption plate at the moment is recorded as a third adsorption force, the force exerted on the adsorbed layer by the second adsorption plate at the moment is recorded as a fourth adsorption force, the first adhesion force is equal to the third adsorption force, and the second adhesion force is equal to the fourth adsorption force.
In some optional embodiments, when the adsorbed layer is filled with metal particles; the first adsorption plate includes: the power supply device comprises a first power supply unit, a first metal part and a first electromagnetic coil, wherein the output current of the first power supply unit is adjustable, the first metal part is wound on the first metal part, and two ends of the first electromagnetic coil are respectively connected with a first electrode and a second electrode of the first power supply unit; a second metal portion that is electromagnetically induced with the first metal portion that generates magnetism after energization, the second metal portion being used to attract the attracted layer to a surface thereof facing the attracted layer; the second adsorption plate includes: the output current of the second power supply unit is adjustable, the third metal part is wound on a second electromagnetic coil, and two ends of the second electromagnetic coil are respectively connected with a first electrode and a second electrode of the second power supply unit; a fourth metal portion that is electromagnetically induced with a third metal portion that generates magnetism after energization, the fourth metal portion being used when the adsorbed layer is adsorbed to a surface of the fourth metal portion facing the adsorbed layer;
the step of obtaining a first adhesive force between the double-sided tape and the display panel and a second adhesive force between the double-sided tape and the backlight source through a peeling test and a reliability test specifically comprises the following steps:
determining the relation between the adsorption force applied to one surface of the adsorbed layer facing the second metal part in unit area and the current introduced into the first metal part;
determining the relation between the adsorption force applied to one surface of the adsorbed layer facing the fourth metal part in unit area and the current introduced into the third metal part;
the first power supply unit and the second power supply unit output first set currents to the first metal part and the second metal part respectively, the contact area of the second metal part and the adsorbed layer is adjusted to be a first set area stored in advance, and the contact area of the fourth metal part and the adsorbed layer is adjusted to be a second set area stored in advance;
performing the peeling test, applying a set separating force between the second metal part and the adsorbed layer and between the fourth metal part and the adsorbed layer, adjusting the output current of the first power supply unit and the output current of the second power supply unit until the second metal part is separated from the adsorbed layer and the fourth metal part is not separated from the adsorbed layer, recording the output current of the first power supply unit at the moment as a first output current, and recording the output current of the second power supply unit at the moment as a second output current;
controlling the first power supply unit to output a first output current, controlling the second power supply unit to output a second output current, performing the reliability experiment on the second metal part, the fourth metal part and the adsorbed layer which are adsorbed together, adjusting the output current of the first power supply unit and the output current of the second power supply unit in the same adjustment ratio until the second metal part and the adsorbed layer and the fourth metal part and the adsorbed layer are not separated, recording the output current of the first power supply unit as a third output current at the moment, and recording the output current of the second power supply unit as a fourth output current;
according to the third output current, the relation between the adsorption force applied to one surface of the adsorbed layer facing the second metal part in unit area and the current introduced into the first metal part and the first set area are obtained;
and according to the fourth output current, the relation between the adsorption force applied to one surface of the adsorbed layer facing the third metal part in unit area and the current introduced into the fourth metal part, and the second bonding force is obtained by the second set area.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for simulating a double-sided tape adhesion according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an application of the apparatus for simulating the adhesion of a double-sided tape in a test according to the embodiment of the present invention;
FIG. 3 is a flow chart of a method for determining adhesion provided by an embodiment of the present invention;
fig. 4 is another flowchart of a method for determining adhesion according to an embodiment of the present invention.
Reference numerals:
1-a first adsorption plate; 11-a first metal portion;
12-a second metal portion; 13-a first electromagnetic coil;
2-a second adsorption plate; 21-a third metal portion;
22-a fourth metal portion; 23-a third electromagnetic coil;
3-adsorbed layer; 31-metal particles;
4-prying the arm; 5-a first separation arm;
6-second separation arm.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 scope of protection of the present patent.
As shown in fig. 1, the present invention provides an apparatus for simulating a bonding force of a double-sided tape, comprising: a first adsorption plate 1 with adjustable adsorption force; a second adsorption plate 2 with adjustable adsorption force; and an adsorbed layer 3 located between the first and second adsorption plates 1 and 2.
The device for simulating the bonding force of the double-sided adhesive tape provided by the invention can respectively simulate a display panel, a backlight source and the double-sided adhesive tape in a display module by the arrangement of the first adsorption plate 1, the second adsorption plate 2 and the adsorbed layer 3, and continuously adjust the adsorption force between the first adsorption plate and the adsorbed layer and the adsorption force between the second adsorption plate and the adsorbed layer by carrying out a stripping experiment and a reliability experiment until a first bonding force between the double-sided adhesive tape and the display panel and a second bonding force between the double-sided adhesive tape and the backlight source are obtained, wherein the first bonding force and the second bonding force are respectively equal to: in the peeling test, the first adsorption plate 1 and the adsorbed layer 3 are kept separated from each other and the second adsorption plate 2 and the adsorbed layer 3 are not separated from each other, and in the reliability test, when the first adsorption plate 1 and the adsorbed layer 3 are kept not separated from each other, and the second adsorption plate 2 and the adsorbed layer 3 are kept not separated from each other, the first adsorption plate 1 and the second adsorption plate 2 exert forces on the adsorbed layer 3, respectively. The display panel and the backlight source are not attached together, a device for simulating the adhesive force of the double-sided tape is used for carrying out simulation test to obtain the adhesive force of two sides of the double-sided tape, and then the display panel and the backlight source are attached and assembled according to the obtained result. Therefore, the phenomenon that the double-sided adhesive tape and the display panel are separated from the backlight source in a peeling experiment due to unreasonable bonding force of two sides of the selected double-sided adhesive tape can be avoided, and the phenomenon that the display panel and the backlight source are separated when the display panel and the backlight source which are assembled together work in a later high-temperature high-humidity environment can also be avoided.
Therefore, the device for simulating the bonding force of the double-sided adhesive tape can determine the bonding force of two sides of the double-sided adhesive tape for adhering the display panel and the backlight source, the service life of the display module is prolonged, and the maintenance efficiency is improved.
The double-sided adhesive tape is used for bonding the display panel and the backlight together and also has the function of fixing other modules in the backlight, so that when the double-sided adhesive tape is disassembled, the double-sided adhesive tape and the backlight are required to be separated from the display panel together in order to prevent the backlight from being damaged and the display panel from being polluted, if the double-sided adhesive tape is separated from the backlight and is attached to the display panel, the double-sided adhesive tape is troublesome in subsequent removal, and the display panel is easily damaged due to improper removal modes.
The specific structures of the first adsorption plate 1, the second adsorption plate 2 and the adsorbed layer 3 may be various, and physical adsorption or chemical adsorption may be performed between the first adsorption plate 1 and the adsorbed layer 3, or between the second adsorption plate 2 and the adsorbed layer 3.
In an alternative embodiment provided by the present invention, the adsorbed layer 3 is filled with metal particles 31;
the first adsorption plate 1 includes: a first power supply unit (not shown in the figure), the output current of which is adjustable, a first metal part 11, a first electromagnetic coil 13 wound on the first metal part 11, and two ends of the first electromagnetic coil 13 are respectively connected with a first electrode and a second electrode of the first power supply unit; a second metal portion 12 that is electromagnetically induced with the first metal portion 11 that generates magnetism when energized, the second metal portion 12 being used to attract the attracted layer 3 to a surface thereof facing the attracted layer 3;
the second adsorption plate 2 includes: a second power supply unit (not shown in the figure), the output current of which is adjustable, a third metal part 21, a second electromagnetic coil 23 wound on the third metal part 21, and two ends of the second electromagnetic coil 23 are respectively connected with a first electrode and a second electrode of the second power supply unit; and a fourth metal portion 22 that is electromagnetically induced with the third metal portion 21 that generates magnetism after energization, wherein the fourth metal portion 22 is used to attract the attracted layer 3 to one surface of the fourth metal portion 22 facing the attracted layer 3. The first electromagnetic coil 13 and the second electromagnetic coil 23 are energized, so that the first metal part 11 and the third metal part 21 both generate electromagnetism, the second metal part 12 and the fourth metal part 22 have magnetism due to electromagnetic induction, the second metal part 12 and the fourth metal part 22 can adsorb metal particles in the adsorbed layer 3, and the magnitude of the adsorption force between the second metal part 12 and the adsorbed layer 3 and the magnitude of the adsorption force between the fourth metal part 22 and the adsorbed layer 3 can be changed by changing the magnitude of the current passed in the first electromagnetic coil 13 and the second electromagnetic coil 23. The second metal portion 12 and the fourth metal portion 22 are in contact adsorption with the adsorbed layer 3, the magnitude of the adsorption force between the second metal portion 12 and the adsorbed layer 3 is related to the magnitude of the contact area between the second metal portion 12 and the adsorbed layer 3, and the magnitude of the adsorption force between the fourth metal portion 22 and the adsorbed layer 3 is related to the magnitude of the contact area between the fourth metal portion 22 and the adsorbed layer 3, so that the contact area can be selected as required before testing by the testing device provided by the invention.
Usually, when the contact area is selected, the contact area between the second metal part 12 and the adsorbed layer 3 has several values, which are empirical values or experimental values, and the contact area between the fourth metal part 22 and the adsorbed layer 3 can be set according to the length of the border of the actual product, because the width of the double-sided tape is sometimes fixed, only the length can be adjusted, and usually, the length of the contact position between the fourth metal part 22 and the adsorbed layer 3 is 0.1 mm to 0.4 mm smaller than the length of the border of the actual product at the corresponding position. The width of the double-sided tape is also related to the width of the border of the actual product, the width of the double-sided tape cannot exceed the width of the border of the product, and correspondingly, the width of the contact position of the fourth metal part and the adsorbed layer can be smaller than the width of the border of the actual product at the corresponding position by 0.1-0.4 mm.
According to the device for simulating the adhesive force of the double-sided adhesive tape, during testing, the relation between the adsorption force applied to one surface, facing the second metal part 12, of the adsorbed layer 3 in unit area and the current introduced into the first metal part 11 is determined;
determining the relation between the adsorption force applied to the surface of the adsorbed layer 3 facing the fourth metal part 22 in unit area and the current introduced into the third metal part 21;
specifically, as shown in fig. 2, when current is applied to the first coil, the first metal part 11 generates a magnetic field under the influence of the current applied to the first coil, the second metal part 12 has magnetism and attracts the adsorbed layer 3, at this time, the prying arm 4 separates the second metal part 12 from the adsorbed layer 3, and assuming that the magnitude of the adsorption force between the second metal part 12 and the adsorbed layer 3 is F3 and the contact area between the second metal part 12 and the adsorbed layer 3 is S1, the force F3(I) between the adsorbed layer 3 and the second metal part 12 per unit area is F3/S1, and similarly, the force F4(I) between the adsorbed layer 3 and the fourth metal part 22 per unit area is F4/S2, where F4 is the magnitude of the adsorption force between the fourth metal part 22 and the adsorbed layer 3, and S2 is the contact area between the fourth metal part 22 and the adsorbed layer 3.
The first power supply unit and the second power supply unit respectively output first set current to the first metal part 11 and the second metal part 12, adjust the contact area of the second metal part 12 and the adsorbed layer 3 to be a first set area B stored in advance, and adjust the contact area of the fourth metal part 22 and the adsorbed layer 3 to be a second set area A stored in advance;
performing a peeling test, applying a set separation force between the second metal part 12 and the adsorbed layer 3 and between the fourth metal part 22 and the adsorbed layer 3, adjusting the output current of the first power supply unit and the output current of the second power supply unit until the second metal part 12 is separated from the adsorbed layer 3 and the fourth metal part 22 is not separated from the adsorbed layer 3, recording the output current of the first power supply unit at the moment as a first output current, and recording the output current of the second power supply unit at the moment as a second output current;
controlling the first power supply unit to output a first output current, controlling the second power supply unit to output a second output current, performing a reliability experiment on the second metal part 12, the fourth metal part 22 and the adsorbed layer 3 which are adsorbed together, adjusting the output current of the first power supply unit and the output current of the second power supply unit in the same adjustment proportion until the second metal part 12 and the adsorbed layer 3 are not separated from each other, recording the output current of the first power supply unit as a third output current, and recording the output current of the second power supply unit as a fourth output current;
according to the third output current, the relation between the adsorption force applied to one surface of the adsorbed layer 3 facing the second metal part 12 in unit area and the current introduced into the first metal part 11 and the first set area B are obtained to obtain a first bonding force;
according to the fourth output current, the relationship between the absorption force applied to the surface of the absorbed layer 3 facing the third metal portion 21 per unit area and the current flowing into the fourth metal portion 22, and the second bonding force is obtained for the second set area a. Subsequently, when the product is produced, the double-sided adhesive tape can be designed according to the obtained first adhesive force and the second adhesive force.
In the actual product, the adhesive strength between the display panel and the double-sided tape is different from the adhesive strength between the backlight and the double-sided tape, and the roughness of the surface of the adsorbed layer 3 facing the fourth metal portion 22 is larger than the roughness of the surface of the adsorbed layer 3 facing the second metal portion 12 in order to match the actual product. The roughness is different so that the adsorption force is different between the adsorbed layer 3 and the fourth metal part 22 and the second metal part 12.
The specific shapes of the second metal part 12 and the fourth metal part 22 can be set according to actual needs, and optionally, the fourth metal part 22 is a frame structure with a hollow middle part.
Optionally, the length of the area where the frame of each side of the fourth metal part 22 contacts the adsorbed layer 3 is 0.1 mm to 0.4 mm smaller than the length of the frame of the corresponding side of the display panel to be bonded.
The temperature of the reliability test is not less than 60 ℃ and not more than 90 ℃, and the humidity of the reliability test is not less than 90%. Optionally, the temperature of the reliability experiment may be 60 degrees celsius, 70 degrees celsius, 80 degrees celsius, 90 degrees celsius, and the like, which is not described herein again.
In order to facilitate the peeling experiment, the device for simulating the adhesion force of the double-sided tape further comprises:
a prying arm 4, a first separating arm 5 and a second separating arm 6, wherein the prying arm 4, the first separating arm 5 and the second separating arm 6 are used for applying a separating force to the first adsorption plate 1, the adsorbed layer 3 and the second adsorption plate 2 which are adsorbed together in a peeling test. As shown in fig. 1, the direction of the force of the first separating arm 5 acting on the second suction plate 2 is shown in fig. F1, and the direction of the force of the second separating arm 6 acting on the first suction plate 1 is shown in fig. F2.
The invention also provides a bonding force determination method based on the device for simulating the bonding force of the double-sided adhesive tape, wherein the device comprises the following steps: the adsorption device comprises a first adsorption plate with adjustable adsorption force, a second adsorption plate with adjustable adsorption force, and an adsorbed layer positioned between the first adsorption plate and the second adsorption plate;
the adhesion determination method includes: through peeling experiments and reliability experiments, first adhesive force between the double-sided adhesive tape and the display panel and second adhesive force between the double-sided adhesive tape and the backlight source are obtained, and the first adhesive force and the second adhesive force are respectively equal to: the first adsorption plate and the second adsorption plate are kept separated from each other while the second adsorption plate and the adsorbed layer are kept not separated from each other in the peeling test, and the first adsorption plate and the adsorbed layer, and the second adsorption plate and the adsorbed layer are kept not separated from each other in the reliability test, the first adsorption plate and the second adsorption plate exert forces on the adsorbed layer respectively.
Optionally, the step of obtaining the first adhesive force between the double-sided tape and the display panel and the second adhesive force between the double-sided tape and the backlight source through a peeling test and a reliability test specifically includes:
the first adsorption plate and the second adsorption plate respectively adsorb the adsorbed layer;
applying a set separation force between the first adsorption plate and the adsorbed layer and between the second adsorption plate and the adsorbed layer, adjusting the adsorption force of the first adsorption plate and the second adsorption plate until the first adsorption plate is separated from the adsorbed layer and the second adsorption plate is not separated from the adsorbed layer, recording the force applied by the first adsorption plate on the adsorbed layer as a first adsorption force, and recording the force applied by the second adsorption plate on the adsorbed layer as a second adsorption force;
the first adsorption plate adsorbs the adsorbed layer with first adsorption power, the second adsorption plate adsorbs the adsorbed layer with the second adsorption power, carry out the reliance experiment to the first adsorption plate, the second adsorption plate that adsorb together and adsorbed layer, adjust first adsorption power and second adsorption power with the same regulation proportion, until first adsorption plate and adsorbed layer and second adsorption plate and adsorbed layer do not separate, the record of the power that first adsorption plate applyed on the adsorbed layer at this moment is the third adsorption power, the record of the power that the second adsorption plate applyed on the adsorbed layer is the fourth adsorption power, first adhesion equals the third adsorption power, the second adhesion equals the fourth adsorption power.
In an alternative embodiment, as shown in fig. 3, when the adsorbed layer is filled with metal particles; the first adsorption plate includes: the power supply device comprises a first power supply unit, a first metal part and a first electromagnetic coil, wherein the output current of the first power supply unit is adjustable; a second metal part which generates electromagnetic induction with the first metal part generating magnetism after electrification, wherein the second metal part is used for adsorbing the adsorbed layer on one surface facing the adsorbed layer; the second adsorption plate includes: the output current of the second power supply unit is adjustable, the third metal part is wound on a second electromagnetic coil, and two ends of the second electromagnetic coil are respectively connected with a first electrode and a second electrode of the second power supply unit; a fourth metal portion that is electromagnetically induced with the third metal portion that generates magnetism after energization, the fourth metal portion being used when the adsorbed layer is adsorbed to a surface of the fourth metal portion facing the adsorbed layer;
the step of obtaining a first adhesive force between the double-sided adhesive tape and the display panel and a second adhesive force between the double-sided adhesive tape and the backlight source through a peeling test and a reliability test specifically comprises the following steps:
step S301: determining the relation between the adsorption force applied to one surface of the adsorbed layer facing the second metal part in unit area and the current introduced into the first metal part;
step S302: determining the relation between the adsorption force applied to one surface of the adsorbed layer facing the fourth metal part in unit area and the current introduced into the third metal part;
step S303: the first power supply unit and the second power supply unit respectively output first set current to the first metal part and the second metal part, the contact area of the second metal part and the adsorbed layer is adjusted to be a first set area stored in advance, and the contact area of the fourth metal part and the adsorbed layer is adjusted to be a second set area stored in advance;
step S304: carrying out a stripping experiment, applying a set separation force between the second metal part and the adsorbed layer and between the fourth metal part and the adsorbed layer, adjusting the output current of the first power supply unit and the output current of the second power supply unit until the second metal part is separated from the adsorbed layer and the fourth metal part is not separated from the adsorbed layer, recording the output current of the first power supply unit at the moment as a first output current, and recording the output current of the second power supply unit at the moment as a second output current;
step S305: controlling the first power supply unit to output a first output current, controlling the second power supply unit to output a second output current, performing a reliability experiment on the second metal part, the fourth metal part and the adsorbed layer which are adsorbed together, adjusting the output current of the first power supply unit and the output current of the second power supply unit in the same adjustment proportion until the second metal part and the adsorbed layer and the fourth metal part and the adsorbed layer are not separated, recording the output current of the first power supply unit as a third output current at the moment, and recording the output current of the second power supply unit as a fourth output current;
step S306: according to the third output current I3, the relation between the adsorption force applied to one surface of the adsorbed layer facing the second metal part in unit area and the current passing through the first metal part and the first set area obtain a first bonding force Fn (I3) ═ f3(I3) × B;
step S307: according to the fourth output current I4, the relationship between the absorption force applied to the surface of the absorbed layer facing the third metal part per unit area and the current flowing into the fourth metal part, and the second set area, the second bonding force Fn (I4) ═ f4(I4) × a are obtained.
As shown in fig. 4, the specific determination process of the test procedure is first as shown in step S401: determining a value A according to the frame of the display module, then determining a value B, executing the corresponding step according to the value B (step S4021, or step S4022 or step S4023), performing a peeling experiment, and executing step S403; step S404 is executed: whether the adsorbed layer is separated from the first adsorption plate or not, if not, executing the step S409: adjusting the output currents of the first power supply unit and the second power supply unit, then performing a peeling experiment, and repeating the step S404 and the step S409 until the adsorbed layer is separated from the first adsorption plate and not separated from the second adsorption plate; if so, go to step S405: performing a reliability experiment; step S406 is executed: whether or not the adsorbed layer is separated from both the first adsorption plate and the second adsorption plate, and if so, executing step S407: adjusting the output currents of the first power supply unit and the second power supply unit according to the same adjustment ratio until the adsorbed layer is not separated from the first adsorption plate and the second adsorption plate; if not, go to step S408: the adsorption force between the first adsorption plate and the adsorbed layer and the adsorption force between the second adsorption plate and the adsorbed layer at this time are recorded to determine the first adhesion force and the second adhesion force.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. An apparatus for simulating double-sided tape adhesion, comprising:
the first adsorption plate has adjustable adsorption force;
the second adsorption plate is adjustable in adsorption force;
an adsorbed layer located between the first adsorption plate and the second adsorption plate;
the adsorbed layer is filled with metal particles;
the first adsorption plate includes: the power supply device comprises a first power supply unit, a first metal part and a first electromagnetic coil, wherein the output current of the first power supply unit is adjustable, the first metal part is wound on the first metal part, and two ends of the first electromagnetic coil are respectively connected with a first electrode and a second electrode of the first power supply unit; a second metal portion that is electromagnetically induced with the first metal portion that generates magnetism after energization, the second metal portion being used to attract the attracted layer to a surface thereof facing the attracted layer;
the second adsorption plate includes: the output current of the second power supply unit is adjustable, the third metal part is wound on a second electromagnetic coil, and two ends of the second electromagnetic coil are respectively connected with a first electrode and a second electrode of the second power supply unit; and a fourth metal portion that is electromagnetically induced with the third metal portion that generates magnetism after energization, the fourth metal portion being configured to attract the attracted layer to a surface of the fourth metal portion facing the attracted layer.
2. The apparatus of claim 1, wherein a surface of the adsorbed layer facing the fourth metal portion has a roughness greater than a surface of the adsorbed layer facing the second metal portion.
3. The device for simulating double-sided tape adhesion according to claim 1, wherein the fourth metal portion has a frame structure with a hollow middle portion.
4. The device for simulating double-sided tape adhesion according to claim 3, wherein the length of the region where each side frame of the fourth metal part contacts the adsorbed layer is 0.1 mm to 0.4 mm smaller than the length of the frame of the corresponding side of the display panel to be adhered.
5. The apparatus for simulating double-sided tape adhesion according to any one of claims 1 to 4, further comprising:
the first separation arm and the second separation arm are used for exerting separation force on the first adsorption plate, the adsorbed layer and the second adsorption plate which are adsorbed together in a stripping experiment.
6. An adhesion determination method based on the apparatus for simulating adhesion of a double-sided tape according to claim 1, wherein both sides of the double-sided tape are used for adhering a display panel and a backlight, respectively, the adhesion determination method comprising: obtaining a first adhesive force between the double-sided tape and the display panel and a second adhesive force between the double-sided tape and the backlight source through a peeling test and a reliability test, wherein the first adhesive force and the second adhesive force are respectively equal to: the first adsorption plate and the second adsorption plate are respectively applied with a force on the adsorbed layer when the first adsorption plate and the adsorbed layer are kept separated and the second adsorption plate and the adsorbed layer are not separated in the peeling experiment, and the first adsorption plate and the second adsorption plate are respectively kept not separated from each other in the reliability experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710814227.3A CN107490543B (en) | 2017-09-11 | 2017-09-11 | Device for simulating adhesion of double-sided adhesive tape and adhesion determination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710814227.3A CN107490543B (en) | 2017-09-11 | 2017-09-11 | Device for simulating adhesion of double-sided adhesive tape and adhesion determination method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107490543A CN107490543A (en) | 2017-12-19 |
| CN107490543B true CN107490543B (en) | 2020-11-10 |
Family
ID=60652328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710814227.3A Active CN107490543B (en) | 2017-09-11 | 2017-09-11 | Device for simulating adhesion of double-sided adhesive tape and adhesion determination method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107490543B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU974224A2 (en) * | 1981-05-13 | 1982-11-15 | Харьковское Высшее Военное Авиационное Инженерное Училище | Adhesion meter |
| CN100494966C (en) * | 2004-11-11 | 2009-06-03 | 香港理工大学 | Testing box for measuring anti-pulling force of soil nailing mechanical property |
| CN103196827B (en) * | 2013-03-25 | 2016-02-03 | 奥瑞金包装股份有限公司 | Film-covered iron surface film adhesion checkout equipment and detection method |
| US9784668B2 (en) * | 2015-05-29 | 2017-10-10 | The Boeing Company | Systems and methods for testing internal bonds |
| CN105334160A (en) * | 2015-10-14 | 2016-02-17 | 京东方科技集团股份有限公司 | Thin film adhesion testing equipment and thin film adhesion testing method |
| CN105334109B (en) * | 2015-11-27 | 2017-12-12 | 中国矿业大学 | A kind of experimental rig and its test method based on electromagnetic field simulation Complicated Loads |
-
2017
- 2017-09-11 CN CN201710814227.3A patent/CN107490543B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107490543A (en) | 2017-12-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20160067827A (en) | Display device | |
| WO2005123388A3 (en) | Magneto-active adhesive systems | |
| US20150126095A1 (en) | Chemical mechanical polishing apparatus and polishing method using the same | |
| CN111244010A (en) | LED chip, assembling device and assembling method of display panel | |
| JP2015503111A (en) | Reusable electronic circuit assembly and test system and use thereof | |
| RU2011124882A (en) | BIOSENSOR SYSTEM FOR DRIVING MAGNETIC PARTICLES | |
| CN107490543B (en) | Device for simulating adhesion of double-sided adhesive tape and adhesion determination method | |
| CN105334109A (en) | Test device for simulating complicated loads based on electromagnetic field, and test method using test device | |
| JP2019087726A (en) | METHOD OF LAMINATING, CUTTING, AND DIVIDING Nd-Fe-B BASED MAGNETIC MATERIAL, AND PRESSING DEVICE FOR LAMINATING ADHESION OF Nd-Fe-B BASED MAGNETIC MATERIAL | |
| CN104551589A (en) | Component assembly manufacturing method, positioning apparatus, and component assembly | |
| CN108807469B (en) | Method and device for attaching OLED display panel and back plate | |
| JP4209141B2 (en) | Method for transporting a substantially disc-shaped semi-finished product and apparatus for carrying out this method | |
| CN104094522B (en) | Method and apparatus for removal of harmonic noise | |
| WO2018170943A1 (en) | Motor vibrator welding tooling and welding method | |
| JP6703725B1 (en) | Bonding method of semiconductor chip and supporting substrate, polishing method of semiconductor chip, and bonding method of wafer and supporting substrate | |
| CN111433588B (en) | Battery part peel strength measuring apparatus using electromagnet and peel strength measuring method using the same | |
| TWI439979B (en) | Electronic paper structure and method for faricating electronic paper | |
| CN201489069U (en) | Wiring harness test result marking dotting device | |
| CN111439016B (en) | Attaching method of special-shaped glass cover plate and display device | |
| US9942986B1 (en) | System with field-assisted conductive adhesive bonds | |
| CN106558410B (en) | A kind of glue spreading apparatus of stereo amorphous alloy wound iron core | |
| WO2006054406A1 (en) | Electrostatic chuck for vacuum bonding system | |
| JP6343777B2 (en) | Charging device | |
| CN206075651U (en) | A kind of convenient electric class is installed and shows teaching equipment | |
| CN212854639U (en) | Magnetic baby house capable of quickly replacing wallpaper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |