CN113823187A - Display module and electronic equipment - Google Patents
Display module and electronic equipment Download PDFInfo
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- CN113823187A CN113823187A CN202110986253.0A CN202110986253A CN113823187A CN 113823187 A CN113823187 A CN 113823187A CN 202110986253 A CN202110986253 A CN 202110986253A CN 113823187 A CN113823187 A CN 113823187A
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- heat dissipation
- layer
- conductive
- shaped conductive
- film
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
- G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
- G02B5/3058—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state comprising electrically conductive elements, e.g. wire grids, conductive particles
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/02—Carrying-off electrostatic charges by means of earthing connections
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
Abstract
The embodiment of the invention provides a display module and electronic equipment. The display module comprises a heat dissipation film layer, a display panel and a polaroid; the heat dissipation film layer covers the first surface of the display panel, and the polarizer covers the second surface of the display panel, wherein the first surface and the second surface are two opposite surfaces of the display panel; the side of the heat dissipation film layer is provided with a first strip-shaped conductive band extending along a first direction, the side of the polaroid is provided with a second strip-shaped conductive band extending along the first direction, the side of the heat dissipation film layer is a surface vertical to the first surface in the heat dissipation film layer, the side of the polaroid is a surface vertical to the second surface in the polaroid, the first direction is vertical to the first surface, and the first strip-shaped conductive band and the second strip-shaped conductive band are sprayed with metal conductive paint. Therefore, the lead-out path of the charges on the display panel is increased, and the charges can be led out quickly, so that the display effect of the display module is improved.
Description
Technical Field
The invention relates to the technical field of electronic equipment, in particular to a display module and electronic equipment.
Background
With the advancement of technology, the applications of mobile electronic devices are becoming more and more widespread. When the mobile electronic equipment is used, the surface of the cover plate is rubbed by fingers of a user, static electricity is easily generated, and when the user uses the electronic equipment for a long time, the static electricity is accumulated along with the time of rubbing the cover plate.
However, the mobile electronic device includes a middle frame or a housing, which has a poor function of dissipating static electricity or grounding, and therefore the characteristics of the fet of the mobile display module are easily affected, resulting in increased leakage or electrical drift of the fet of the display module, which causes uneven display such as brightness or greenness of the display module.
Disclosure of Invention
The embodiment of the invention provides a display module and electronic equipment, and aims to solve the problem that in the related art, the display module is uneven in display such as brightness or greenness caused by the fact that static electricity in the display module cannot be dissipated.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, an embodiment of the present invention provides a display module, where the display module includes a heat dissipation film layer, a display panel, and a polarizer;
the heat dissipation film layer covers a first surface of the display panel, and the polarizer covers a second surface of the display panel, wherein the first surface and the second surface are two opposite surfaces of the display panel;
the side of heat dissipation rete is provided with the first bar conductive band that extends along the first direction, the side of polaroid is provided with the second bar conductive band that extends along the first direction, the side of heat dissipation rete does in the heat dissipation rete with first surface vertically surface, the side of polaroid does in the polaroid with second surface vertically surface, wherein, first direction perpendicular to the direction of first surface, first bar conductive band with the spraying has metal conductive coating in the second bar conductive band.
Optionally, a first U-shaped conductive slot is formed on the heat dissipation surface of the heat dissipation film layer, and a second U-shaped conductive slot is further formed on the polarization surface of the polarizer;
the first U-shaped conductive groove extends to the side face of the heat dissipation film layer along the edge of the heat dissipation surface of the heat dissipation film layer, and the second U-shaped conductive groove extends to the side face of the polarizer along the polarized surface of the polarizer;
the first U-shaped conductive groove penetrates through the heat dissipation film layer, the second U-shaped conductive groove penetrates through the polaroid, and the metal conductive coating is sprayed in the first U-shaped conductive groove and the second U-shaped conductive groove.
Optionally, the metal conductive coating is a photocuring epoxy resin silver paste coating.
Optionally, the polarizer includes a polarizer main body and two first conductive adhesive layers;
the polaroid main body is arranged between the two first conductive adhesive layers, and the display panel is bonded with one of the two first conductive adhesive layers;
the second strip-shaped conductive band is arranged on the side face of the polarizer main body, the second U-shaped conductive groove is arranged on the light receiving face of the polarizer main body, and the second U-shaped conductive groove penetrates through the polarizer main body.
Optionally, two ground lines are disposed on the side surface of the polarizer main body, two contact points are disposed at the end of the second U-shaped conductive groove, and the two contact points are respectively connected to the two ground lines.
Optionally, the heat dissipation film layer includes a heat dissipation film base film and at least two second conductive adhesive layers;
at least two-layer second conductive adhesive layer sets up the heat dissipation membrane basement membrane with between the display panel, the spraying has the metal conductive powder layer between at least two-layer second conductive adhesive layer.
Optionally, the heat dissipation film layer further includes a polyimide film, a buffer film layer and a graphite powder layer;
the buffer film layer is arranged between the polyimide film and the heat dissipation film base films, the buffer module is arranged between the heat dissipation film base films, the polyimide film is arranged between the buffer film layers, and the graphite powder layer is arranged between the buffer film layers.
Optionally, the second conductive adhesive layer is further disposed between the polyimide film and the graphite powder layer.
Optionally, the at least two second conductive adhesive layers include a first adhesive layer and a second adhesive layer;
the first glue film is bonded on the surface of the heat dissipation film bottom film, the second glue film is bonded on the surface of the display panel, and the thickness of the first glue film is smaller than that of the second glue film.
Optionally, the at least two second conductive adhesive layers are adhesive layers added with sulfides.
Optionally, a plurality of strip-shaped conductive grooves are formed in the first surface of the heat dissipation film layer, and the strip-shaped conductive grooves extend from the at least two second conductive adhesive layers arranged between the heat dissipation film base film and the display panel to the polyimide film;
a metal conductive powder layer is sprayed in at least one of the strip-shaped conductive grooves, wherein the first surface is the surface of the heat dissipation film layer, which is positioned at the same side position as the non-display area in the display module.
Optionally, the groove width and the groove depth of each strip-shaped conductive groove are equal.
Optionally, each of the strip-shaped conductive grooves has a groove depth greater than or equal to 100um and less than or equal to 300 um.
Optionally, the heat dissipation film layer further includes a metal conductive layer, the metal conductive layer covers the surface of the polyimide film, and the metal conductive layer is grounded.
In a second aspect, an embodiment of the present invention provides an electronic device, where the electronic device includes the display module according to any one of the first aspect.
It can be seen from the foregoing embodiments that, in the embodiment of the present application, because the side of the heat dissipation film layer is provided with the first strip-shaped conductive strip extending along the first direction, the side of the polarizer is provided with the second strip-shaped conductive strip extending along the first direction, the side of the heat dissipation film layer is a surface of the heat dissipation film layer perpendicular to the first surface, and the side of the polarizer is a surface of the polarizer perpendicular to the second surface, wherein the first direction is perpendicular to the first surface, and the first strip-shaped conductive strip and the second strip-shaped conductive strip are sprayed with the metal conductive coating. Like this, because the heat dissipation rete covers on display panel's first surface, the polaroid covers on display panel's second surface, first surface and second surface are two surfaces that display panel is relative, consequently make the derivation route of electric charge increase on the display panel, be favorable to leading out of electric charge fast, and then avoid display module assembly's field effect transistor to take place electric leakage increase or electric drift, avoid simultaneously that display module assembly produces the emergence of showing inequality phenomena such as shining or sending out green, so that display module assembly's display effect obtains promoting.
Drawings
Fig. 1 is a schematic cross-sectional view of a display module according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of a display module according to an embodiment of the invention;
FIG. 3 is a schematic diagram illustrating an assembly of a display panel and a polarizer according to an embodiment of the present invention;
FIG. 4 is a schematic view of a heat-dissipating film base film according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a polarizer body according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a heat-dissipating film according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a heat dissipation film layer according to an embodiment of the invention.
Reference numerals:
10: a heat dissipation film layer; 20: a display panel; 30: a polarizer; 101: a first strip-shaped conductive tape; 102: a first U-shaped conductive slot; 103: a heat-dissipating film base film; 104: a second conductive adhesive layer; 105: a polyimide film; 106: a buffer film layer; 107: a layer of graphite powder; 108: a strip-shaped conductive groove; 109: a metal conductive layer; 110: a metal conductive powder layer; 301: a second strip-shaped conductive tape; 302: a second U-shaped conductive slot; 303: a polarizer main body; 304: a first conductive adhesive layer; 305: a ground line; 1041: a first glue layer; 1042: and a second adhesive layer.
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 some, 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.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Fig. 1 is a schematic cross-sectional view of a display module according to an embodiment of the present invention, and fig. 2 is a schematic structural view of the display module according to the embodiment of the present invention, as shown in fig. 1 and fig. 2, the display module includes a heat dissipation film 10, a display panel 20, and a polarizer 30; the heat dissipation film layer 10 covers a first surface of the display panel 20, and the polarizer 30 covers a second surface of the display panel 20, where the first surface and the second surface are two opposite surfaces of the display panel 20; the side of the heat dissipation film layer 10 is provided with a first strip-shaped conductive band 101 extending along a first direction, the side of the polarizer 30 is provided with a second strip-shaped conductive band 301 extending along the first direction, the side of the heat dissipation film layer 10 is a surface of the heat dissipation film layer 10 perpendicular to the first surface, the side of the polarizer 30 is a surface of the polarizer 30 perpendicular to the second surface, wherein the first direction is perpendicular to the first surface, and a metal conductive coating is sprayed in the first strip-shaped conductive band 101 and the second strip-shaped conductive band 301.
In the embodiment of the invention, in order to facilitate heat dissipation of the display panel surface, the heat dissipation film layer 10 is disposed on the first surface of the display panel 20, the first surface is a non-display surface of the display panel 20, and the second surface is a display surface of the display panel 20. In order to rapidly conduct away static electricity accumulated on the display panel 20, a first strip-shaped conductive strip 101 extending along a first direction is disposed on a side surface of the heat dissipation film layer 10, and a second strip-shaped conductive strip 301 extending along the first direction is disposed on a side surface of the polarizer, so that a path for conducting static electricity exists at both the top and the bottom of the display panel 20.
Specifically, the first strip-shaped conductive tape 101 is disposed on the side surface of the heat dissipation film layer 10, that is, a strip-shaped groove may be formed on the surface of the heat dissipation film layer 10 perpendicular to the non-display surface of the display panel 20, so that the strip-shaped groove extends along a direction perpendicular to the first surface of the display panel 20, and then the strip-shaped groove may be coated with a conductive paint, so that charges accumulated on the display panel 20 may be led out along the extending direction of the first strip-shaped conductive tape 101 to the outside, thereby preventing static electricity from accumulating on the display panel 20.
Similarly, the second strip-shaped conductive strip 301 extending along the first direction is disposed on the side surface of the polarizer 30, that is, a strip-shaped groove may be formed on the surface of the polarizer 30 perpendicular to the non-display surface of the display panel 20, so that the strip-shaped groove extends along the direction perpendicular to the second surface of the display panel 20, and then the strip-shaped groove may be coated with a conductive paint, so that charges accumulated on the display panel 20 may be led out along the extending direction of the second strip-shaped conductive strip 301, and the accumulation of static electricity on the display panel 20 may also be avoided.
It should be noted that, the width of the first strip-shaped conductive band 101 and the width of the second strip-shaped conductive band 301 can both be 50um, the distance between the position where the first strip-shaped conductive band 101 is opened and the edge position of the heat dissipation film layer 10 is greater than or equal to 200um, and is less than or equal to 300um, the distance between the position where the second strip-shaped conductive band 301 is opened and the edge position of the polarizer 30 is greater than or equal to 200um, and is less than or equal to 300um, so that the opening of the first strip-shaped conductive band 101 and the second strip-shaped conductive band 301 does not affect the design of the frame of the display module, and the bad film printing cannot be generated.
In addition, the position that first strip-shaped conductive band 101 was seted up and the position that second strip-shaped conductive band 301 was seted up all are located the non-display area of display module assembly, and first strip-shaped conductive band 101 does not expose in the edge of heat dissipation rete 10, and second strip-shaped conductive band 301 does not expose in the edge of polaroid 30, can effectively prevent to expose the product reliability problem that leads to because of the conductive band, also avoided simultaneously because of seting up first strip-shaped conductive band 101 and second strip-shaped conductive band 301 and causing the influence with the normal work of the other parts that display module assembly is connected.
In this way, the heat dissipation film layer 10 and the polarizer are covered on different surfaces of the display panel 20, so that static electricity accumulated on the display panel 20 can be diffused in the top and bottom directions of the display panel 20, and can be led out through the first strip-shaped conductive strip 101 formed on the heat dissipation film layer 10 and the second strip-shaped conductive strip 301 formed on the polarizer 30, which is beneficial to fast leading out of charges under the condition that the conductive paths are increased.
As can be seen from the foregoing embodiments, in the embodiment of the present application, the first strip-shaped conductive strip 101 extending along the first direction is disposed on the side surface of the heat dissipation film layer 10, the second strip-shaped conductive strip 301 extending along the first direction is disposed on the side surface of the polarizer, the side surface of the heat dissipation film layer 10 is a surface of the heat dissipation film layer 10 perpendicular to the first surface, and the side surface of the polarizer is a surface of the polarizer perpendicular to the second surface, wherein the first direction is perpendicular to the first surface, and the first strip-shaped conductive strip 101 and the second strip-shaped conductive strip 301 are sprayed with a metal conductive coating, so that, when charges are accumulated on the display panel 20, the charges can be led out along the first strip-shaped conductive strip 101 disposed on the side surface of the heat dissipation film layer 10 and the second strip-shaped conductive strip 301 disposed on the side surface of the polarizer. Like this, because heat dissipation film layer 10 covers on display panel 20's first surface, polaroid 30 covers on display panel 20's second surface, first surface and second surface are two surfaces that display panel 20 is relative, consequently, make the derivation route of electric charge increase on display panel 20, be favorable to deriving fast of electric charge, and then avoid display module's field effect transistor to take place electric leakage increase or electric drift, avoid simultaneously that display module produces the emergence of showing inequality phenomena such as shining or green, so that display module's display effect obtains promoting.
In addition, in the embodiment of the present application, as shown in fig. 2, fig. 4 and fig. 5, a first U-shaped conductive groove 102 may be further disposed on the heat dissipation surface of the heat dissipation film 10, and a second U-shaped conductive groove 302 is further disposed on the polarization surface of the polarizer 30; the first U-shaped conductive groove 102 extends along the edge of the heat dissipation surface of the heat dissipation film 10 to the side of the heat dissipation film 10, and the second U-shaped conductive groove 302 extends along the side of the polarizer 30 facing the polarizer 30; the first U-shaped conductive groove 102 penetrates through the heat dissipation film 10, the second U-shaped conductive groove 302 penetrates through the polarizer, and the first U-shaped conductive groove 102 and the second U-shaped conductive groove 302 are sprayed with a metal conductive coating.
It should be noted that, in the case that the heat dissipation film 10 and the polarizer 30 are rectangular sheet structures, the first U-shaped conductive groove 102 may be formed along the edge positions of three sides of the heat dissipation film 10, and the second U-shaped conductive groove 302 may be formed along the edge positions of three sides of the polarizer 30, so that the charges transferred to the heat dissipation film 10 may be led out along the extending direction of the first U-shaped conductive groove 102, and the charges transferred to the heat dissipation film 10 may be led out along the extending direction of the second U-shaped conductive groove 302. Because the first U-shaped conductive groove 102 penetrates through the heat dissipation film layer 10, the second U-shaped conductive groove 302 penetrates through the polarizer, the side surface of the heat dissipation film layer 10 is provided with the first strip-shaped conductive band 101 extending along the first direction, the side surface of the polarizer is provided with the second strip-shaped conductive band 301 extending along the first direction, and the first direction is perpendicular to the direction of the first surface, therefore, the extending direction of the first strip-shaped conductive band 101 is intersected with the extending direction of the first U-shaped conductive groove 102, and the extending direction of the second strip-shaped conductive band 301 is intersected with the extending direction of the second U-shaped conductive groove 302, so that charges can be led out not only in the direction perpendicular to the plane where the display panel 20 is located, but also in the direction parallel to the plane where the display panel 20 is located, thereby further accelerating the leading-out rate of the charges, and further improving the display effect of the display module.
It should be noted that the metal conductive paint disposed in the first strip-shaped conductive tape 101, the second strip-shaped conductive tape 301, the first U-shaped conductive groove 102, and the second U-shaped conductive groove 302 may be a photo-curable epoxy silver paste paint. Because photocuring epoxy silver thick liquid coating can generate high performance conductive silver silk, the silver silk granule is less, and the conducting capacity is strong, consequently can promote the electric charge conducting capacity of first bar conductive band 101, second bar conductive band 301, first U-shaped conductive groove 102 and second U-shaped conductive groove 302 for display panel 20's electric charge transfer speed further obtains promoting.
In addition, in the embodiment of the present application, the conducting adhesive may be added to further accelerate the discharge of static electricity on the display panel 20. The conductive adhesive may be added to the polarizer 30 and the heat dissipation film 10 to achieve the above effect, and the following methods may be specifically adopted:
in terms of the polarizer, as shown in fig. 3, the polarizer 30 includes a polarizer main body 303 and two first conductive adhesive layers 304; the polarizer main body 303 is arranged between the two first conductive adhesive layers 304, and the display panel 20 is adhered to one of the two first conductive adhesive layers 304; the second strip-shaped conductive strip 301 is disposed on a side surface of the polarizer main body 303, the second U-shaped conductive groove 302 is disposed on a light receiving surface of the polarizer main body 303, and the second U-shaped conductive groove 302 penetrates through the polarizer main body 303.
It should be noted that, since the polarizer main body 303 is disposed between the two first conductive adhesive layers 304, and the display panel 20 is adhered to one of the two first conductive adhesive layers 304, the two first conductive adhesive layers 304 may be disposed and may also play a role in conducting charges. And because the second strip-shaped conductive strip 301 is arranged on the side surface of the polarizer main body 303, the second U-shaped conductive groove 302 is arranged on the light receiving surface of the polarizer main body 303, and the second U-shaped conductive groove 302 penetrates through the polarizer main body 303, the metal conductive coating on the second U-shaped conductive groove 302 can be tightly attached to the two first conductive adhesive layers 304, so that static electricity gathered between layers or at edge positions of the display module can be conducted away, and the whole static electricity of the display module can be conducted away through the two first conductive adhesive layers 304, so that an excellent static electricity dissipation effect is achieved.
Alternatively, as shown in fig. 5, two ground lines 305 are disposed on the side surface of the polarizer body 303, and two contact points are disposed at the end of the second U-shaped conductive groove 302, and are respectively connected to the two ground lines 305.
In the embodiment of the present invention, the static electricity in the area where the polarizer 30 is located can be dissipated through the external circuit board by means of external silver paste dispensing, and the design can not only dissipate the accumulation type static electricity, but also protect the display panel 20 at the bottom of the polarizer 30 from the influence of external instant high voltage discharge because the metal conductive coating in the second U-shaped conductive slot 302 has good conductivity.
In terms of the heat dissipation film layer 10, as shown in fig. 6 and 7, the heat dissipation film layer 10 includes a heat dissipation film base film 103 and at least two second conductive adhesive layers 104; at least two second conductive adhesive layers 104 are disposed between the heat dissipation film base film 103 and the display panel 20, and a metal conductive powder layer 110 is sprayed between the at least two second conductive adhesive layers 104.
It should be noted that, because the metal conductive powder layer 110 is sprayed between at least two second conductive adhesive layers 104, a complete conductive layer is formed between the two second conductive adhesive layers 104, so that the two second conductive adhesive layers 104 are of a layered structure, and the metal conductive powder layer 110 is in a spraying manner and has an extremely thin thickness, so that the problem of viscosity reduction of the two second conductive adhesive layers 104 caused by the metal conductive powder layer 110 can be completely solved, and the charges transferred to the heat dissipation film layer 10 region can be transferred under the action of the two second conductive adhesive layers 104 and the metal conductive powder layer 110, which is beneficial to further diffusion of the charges.
In addition, the heat dissipation film layer 10 further includes a polyimide film 105, a buffer film layer 106, and a graphite powder layer 107; the buffer film layer 106 is arranged between the polyimide film 105 and the heat dissipation film bottom film 103, and a graphite powder layer 107 is arranged between the buffer module and the heat dissipation film bottom film 103 and between the polyimide film 105 and the buffer film layer 106.
The polyimide film 105 (PI film) may be used as a dielectric layer for interlayer insulation, and may be used as a buffer layer for reducing stress and improving yield. The buffer layer 106 may be made of a material with certain elasticity, such as foam rubber or sponge rubber, so as to reduce the stress borne by the display panel 20. Because the graphite powder layers 107 are arranged between the buffer module and the heat dissipation film bottom film 103 and between the polyimide film 105 and the buffer film layer 106, on one hand, charge can be transferred between the buffer module and the heat dissipation film bottom film 103 and between the polyimide film 105 and the buffer film layer 106, so that the ways of static dissipation are further increased. On the other hand can promote the heat-sinking capability of heat dissipation rete 10 through the graphite powder layer 107 between buffer module and the heat dissipation membrane basement membrane 103, between polyimide film 105 and the buffer film layer 106, prevent bad emergence such as heat dissipation membrane bubble, promote display module's use graphite, and graphite powder adhesion is strong, when improving dissipation static ability or heat-sinking capability, does not influence the adhesion between the layer.
In addition, a second conductive adhesive layer 104 is arranged between the polyimide film 105 and the graphite powder layer 107. In this way, while the charge transfer rate is increased by the second conductive adhesive layer 104, the adhesion capability between the polyimide film 105 and the graphite powder layer 107 can be increased by the second conductive adhesive layer 104 provided between the polyimide film 105 and the graphite powder layer 107.
Optionally, the at least two second conductive glue layers 104 include a first glue layer 1041 and a second glue layer 1042; the first adhesive layer 1041 is adhered to the surface of the heat dissipation film base film 103, the second adhesive layer 1042 is adhered to the surface of the display panel 20, and the thickness of the first adhesive layer 1041 is smaller than that of the second adhesive layer 1042.
It should be noted that, because the thickness of the first adhesive layer 1041 is smaller than that of the second adhesive layer 1042, and the second adhesive layer 1042 is adhered to the surface of the display panel 20, the thickness of the second adhesive layer 1042 near the display panel 20 is larger than that of the first adhesive layer 1041 far from the display panel 20, so that the occurrence of undesirable phenomena such as film mark or other pressure damage caused by spraying the metal conductive layer 109 can be completely eliminated, and the yield of the display module product is improved.
Further, at least two second conductive adhesive layers 104 are adhesive layers added with sulfide, so that the resistance of the heat dissipation film layer 10 can be improved through the second conductive adhesive layers 104, and the ability of dissipating free ions or inducing charges can be further increased.
In addition, since the display panel 20 may have a staggered layer or an excessive glue after being attached to the heat dissipation film layer 10, which affects the dissipation effect of the metal conductive powder layer 110 on static electricity, based on this, a plurality of strip-shaped conductive grooves 108 may be formed on the first surface of the heat dissipation film layer 10, and the strip-shaped conductive grooves 108 extend from at least two second conductive glue layers 104 disposed between the heat dissipation film base film 103 and the display panel 20 to the polyimide film 105; a metal conductive powder layer 110 is sprayed in at least one strip-shaped conductive groove 108 of the plurality of strip-shaped conductive grooves 108, wherein the first surface is a surface of the heat dissipation film layer 10 at the same side position as the non-display area in the display module.
Thus, the plurality of strip-shaped conductive grooves 108 are formed in the first surface of the heat dissipation film layer 10, the strip-shaped conductive grooves 108 extend from the at least two second conductive adhesive layers 104 arranged between the heat dissipation film base film 103 and the display panel 20 to the polyimide film 105, and the extending direction of the strip-shaped conductive grooves 108 is intersected with the surface where the metal conductive layer 109 is located, so that the heat dissipation film layer 10 has two electrostatic dissipation paths in different directions, and the electrostatic dissipation capability of the heat dissipation film layer 10 can be further improved.
It should be noted that, because the first surface is a surface of the heat dissipation film layer 10 located at the same side position as the non-display area in the display module, it can be ensured that the display module does not leak light due to the provision of the bar-shaped conductive groove 108. In addition, the length and the number of the strip-shaped conductive grooves 108 are determined according to the requirement of static dissipation, and the number of the strip-shaped conductive grooves 108 coated with the metal conductive powder layer 110 may determine whether to coat a conductive powder layer in the groove area according to the static dissipation effect.
It should be further noted that the groove width and the groove depth of each strip-shaped conductive groove 108 are equal, so that the static dissipation capability of each strip-shaped conductive groove 108 is equal, and the static dissipation capability of the heat dissipation film layer 10 is further favorably maintained in a stable state.
In addition, the groove depth of each bar-shaped conductive groove 108 is greater than or equal to 100um, and less than or equal to 300um, so that the groove width of each bar-shaped conductive groove 108 is narrow, and light leakage of the display module cannot occur.
In addition, the heat dissipation film layer 10 further includes a metal conductive layer 109, the metal conductive layer 109 covers the surface of the polyimide film 105, and the metal conductive layer 109 is grounded, so that the charges transferred to the heat dissipation film layer 10 region can be once led out through the metal conductive layer 109, and the display panel 20 on the top of the heat dissipation film layer 10 can be protected from the influence of external instantaneous high-voltage discharge while the dissipation rate of the charges is further improved.
As can be seen from the foregoing embodiments, in the embodiment of the present application, the first strip-shaped conductive strip 101 extending along the first direction is disposed on the side surface of the heat dissipation film layer 10, the second strip-shaped conductive strip 301 extending along the first direction is disposed on the side surface of the polarizer, the side surface of the heat dissipation film layer 10 is a surface of the heat dissipation film layer 10 perpendicular to the first surface, and the side surface of the polarizer is a surface of the polarizer perpendicular to the second surface, wherein the first direction is perpendicular to the first surface, and the first strip-shaped conductive strip 101 and the second strip-shaped conductive strip 301 are sprayed with a metal conductive coating, so that, when charges are accumulated on the display panel 20, the charges can be led out along the first strip-shaped conductive strip 101 disposed on the side surface of the heat dissipation film layer 10 and the second strip-shaped conductive strip 301 disposed on the side surface of the polarizer. Like this, because heat dissipation film layer 10 covers on display panel 20's first surface, polaroid 30 covers on display panel 20's second surface, first surface and second surface are two surfaces that display panel 20 is relative, consequently, make the derivation route of electric charge increase on display panel 20, be favorable to deriving fast of electric charge, and then avoid display module's field effect transistor to take place electric leakage increase or electric drift, avoid simultaneously that display module produces the emergence of showing inequality phenomena such as shining or green, so that display module's display effect obtains promoting.
In addition, because the heat dissipation film layer 10 includes the heat dissipation film base film 103 and at least two layers of second conductive adhesive layers 104, at least two layers of second conductive adhesive layers 104 are disposed between the heat dissipation film base film 103 and the display panel 20, and the metal conductive powder layer 110 is sprayed between at least two layers of second conductive adhesive layers 104, the problem of viscosity reduction of the two layers of second conductive adhesive layers 104 caused by the metal conductive powder layer 110 can be completely solved, and the charges transferred to the heat dissipation film layer 10 region can be transferred under the action of the two layers of second conductive adhesive layers 104 and the metal conductive powder layer 110, which is beneficial to further diffusion of the charges.
An embodiment of the present invention provides an electronic device, which includes the display module in any one of the embodiments.
It should be noted that, in the embodiment of the present invention, the electronic device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a wearable device, and the like.
In addition, under the condition that the electronic equipment comprises the display module in any embodiment of the above embodiments, the local static electricity accumulation can be avoided while the electronic equipment has local good heat dissipation performance, and the display performance of the electronic equipment is improved.
It should be further noted that the various embodiments in this specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the various embodiments may be referred to each other.
While alternative embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including alternative embodiments and all such alterations and modifications as fall within the true scope of the embodiments of the invention.
Finally, it should also be noted that, in this document, relational terms such as first and second, and the like may be used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or terminal apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or terminal apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or terminal device comprising the element.
While the technical solutions provided by the present invention have been described in detail, the principles and embodiments of the present invention are described herein by using specific examples, and meanwhile, for a person of ordinary skill in the art, according to the principles and implementation manners of the present invention, changes may be made in the specific embodiments and application ranges.
Claims (15)
1. A display module is characterized by comprising a heat dissipation film layer, a display panel and a polarizer;
the heat dissipation film layer covers a first surface of the display panel, and the polarizer covers a second surface of the display panel, wherein the first surface and the second surface are two opposite surfaces of the display panel;
the side of heat dissipation rete is provided with the first bar conductive band that extends along the first direction, the side of polaroid is provided with the second bar conductive band that extends along the first direction, the side of heat dissipation rete does in the heat dissipation rete with first surface vertically surface, the side of polaroid does in the polaroid with second surface vertically surface, wherein, first direction perpendicular to the direction of first surface, first bar conductive band with the spraying has metal conductive coating in the second bar conductive band.
2. The display module assembly of claim 1, wherein the heat dissipation surface of the heat dissipation film layer is formed with a first U-shaped conductive groove, and the polarization surface of the polarizer is formed with a second U-shaped conductive groove;
the first U-shaped conductive groove extends to the side face of the heat dissipation film layer along the edge of the heat dissipation surface of the heat dissipation film layer, and the second U-shaped conductive groove extends to the side face of the polarizer along the polarized surface of the polarizer;
the first U-shaped conductive groove penetrates through the heat dissipation film layer, the second U-shaped conductive groove penetrates through the polaroid, and the metal conductive coating is sprayed in the first U-shaped conductive groove and the second U-shaped conductive groove.
3. The display module of claim 2, wherein the metal conductive coating is a photo-curable epoxy silver paste coating.
4. The display module of claim 2, wherein the polarizer comprises a polarizer body and two first conductive adhesive layers;
the polaroid main body is arranged between the two first conductive adhesive layers, and the display panel is bonded with one of the two first conductive adhesive layers;
the second strip-shaped conductive band is arranged on the side face of the polarizer main body, the second U-shaped conductive groove is arranged on the light receiving face of the polarizer main body, and the second U-shaped conductive groove penetrates through the polarizer main body.
5. The display module according to claim 4, wherein two ground lines are disposed on the side surface of the polarizer main body, and two contact points are disposed at the end of the second U-shaped conductive groove, and are respectively connected to the two ground lines.
6. The display module of claim 1, wherein the heat-dissipating film layer comprises a base film and at least two second conductive adhesive layers;
at least two-layer second conductive adhesive layer sets up the heat dissipation membrane basement membrane with between the display panel, the spraying has the metal conductive powder layer between at least two-layer second conductive adhesive layer.
7. The display module of claim 6, wherein the heat dissipation film layer further comprises a polyimide film, a buffer film layer and a graphite powder layer;
the buffer film layer is arranged between the polyimide film and the heat dissipation film base films, the buffer module is arranged between the heat dissipation film base films, the polyimide film is arranged between the buffer film layers, and the graphite powder layer is arranged between the buffer film layers.
8. The display module according to claim 7, wherein a layer of the second conductive adhesive layer is further disposed between the polyimide film and the graphite powder layer.
9. The heat dissipation film layer of claim 6, wherein the at least two second conductive adhesive layers comprise a first adhesive layer and a second adhesive layer;
the first glue film is bonded on the surface of the heat dissipation film bottom film, the second glue film is bonded on the surface of the display panel, and the thickness of the first glue film is smaller than that of the second glue film.
10. The heat dissipating film layer of claim 6, wherein the at least two second conductive adhesive layers are sulfide-doped adhesive layers.
11. The display module assembly according to claim 7, wherein the first surface of the heat-dissipating film layer has a plurality of strip-shaped conductive grooves formed thereon, the strip-shaped conductive grooves extending from the at least two second conductive adhesive layers disposed between the heat-dissipating film base film and the display panel to the polyimide film;
a metal conductive powder layer is sprayed in at least one of the strip-shaped conductive grooves, wherein the first surface is the surface of the heat dissipation film layer, which is positioned at the same side position as the non-display area in the display module.
12. The display module of claim 11, wherein each of the stripe-shaped conductive grooves has a groove width and a groove depth that are equal.
13. The display module of claim 12, wherein the groove depth of each of the strip-shaped conductive grooves is greater than or equal to 100um and less than or equal to 300 um.
14. The heat dissipation film layer of claim 7, further comprising a metal conductive layer covering the surface of the polyimide film, wherein the metal conductive layer is grounded.
15. An electronic device, wherein the electronic device comprises the heat-dissipating film layer of any one of claims 1-14.
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