CN110426880B - Display panel and device - Google Patents
Display panel and device Download PDFInfo
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- CN110426880B CN110426880B CN201910748372.5A CN201910748372A CN110426880B CN 110426880 B CN110426880 B CN 110426880B CN 201910748372 A CN201910748372 A CN 201910748372A CN 110426880 B CN110426880 B CN 110426880B
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- display screen
- screen body
- back plate
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- metal back
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
- H05F3/04—Carrying-off electrostatic charges by means of spark gaps or other discharge devices
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/22—Antistatic materials or arrangements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Elimination Of Static Electricity (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention provides a display panel and a device, and belongs to the technical field of display. The display panel comprises a display screen body and an electrostatic protection structure arranged on the back of the display screen body; the electrostatic protection structure comprises a metal back plate and a first conducting layer arranged on the metal back plate; the first conducting layer is positioned on one side, facing the display screen body, of the metal back plate, and one side, facing away from the display screen body, of the metal back plate is electrically connected with a grounding end of a circuit board of the display screen body; the peripheral edge of the first conducting layer is provided with a plurality of point discharge parts, and the point discharge parts are respectively electrically connected with the display screen body and the metal back plate and can perform point discharge. The display panel and the device provided by the invention can lead out static electricity generated on the display screen body in time, and prevent the electrostatic breakdown.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a device.
Background
With the development of liquid crystal technology, liquid crystal display panels are widely used in products such as computers, mobile phones, televisions, and the like because of clear image display.
In the manufacturing process of the liquid crystal display panel, static electricity is generally generated in the manufacturing environment and the manufacturing equipment, and the static electricity may be transmitted into the display panel; or, in the process of product testing, the product testing terminal can also transmit static electricity generated in the testing process to the display panel, and along with the accumulation of the static electricity in the display panel, the static electricity breakdown can be generated and the irreversible damage can be caused to the display panel, so that the display effect of the display panel is influenced.
Disclosure of Invention
The embodiment of the invention provides a display panel and a device, wherein an electrostatic protection structure is arranged on a display screen body, so that static electricity generated on the display screen body can be led out in time, and the phenomenon of electrostatic breakdown is prevented.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
the embodiment of the invention provides a display panel, which comprises a display screen body and an electrostatic protection structure arranged on the back of the display screen body; the electrostatic protection structure comprises a metal back plate and a first conducting layer arranged on the metal back plate; the first conducting layer is positioned on one side, facing the display screen body, of the metal back plate, and one side, facing away from the display screen body, of the metal back plate is electrically connected with a grounding end of a circuit board of the display screen body; the peripheral edge of the first conducting layer is provided with a plurality of point discharge parts, and the point discharge parts are respectively electrically connected with the display screen body and the metal back plate.
Furthermore, the first conducting layer is made of a conducting material with high-voltage conduction and low-voltage insulation.
Furthermore, a second conducting layer is arranged on one side, back to the display screen body, of the metal back plate, and the second conducting layer and the first conducting layer are made of the same conducting material;
the second conductive layer is internally provided with a conductive hole, a conductive column composed of anisotropic conductive adhesive is arranged in the conductive hole, one end of the conductive column is electrically connected with the metal back plate, the other end of the conductive column is electrically connected with the grounding terminal, and the conductive column is electrically insulated from the second conductive layer.
Further, an insulating foam layer is arranged between the metal back plate and the display screen body;
the insulating foam layer is provided with a plurality of through holes, and the through holes are filled with conductive materials which are the same as the first conductive materials.
Furthermore, the insulating foam layer is located between the first conducting layer and the display screen body.
Further, the insulating foam layer is located between the first conductive layer and the metal back plate.
Further, the insulating foam surface layer and the first conducting layer are arranged on the same layer.
Furthermore, the plurality of point discharge parts are uniformly distributed along the circumferential direction of the insulating foam layer.
Furthermore, the insulating foam layer is rectangular, and the corner positions of the insulating foam layer are respectively provided with one point discharge part.
In another aspect, an embodiment of the present invention further provides a display device, which includes a cover plate and a display panel; the display panel comprises a display screen body and an electrostatic protection structure arranged on the back of the display screen body; the cover plate is arranged on the front face of the display screen body.
Compared with the prior art, the display panel and the device provided by the embodiment of the invention have the following advantages:
the display panel and the device provided by the embodiment of the invention comprise a display screen body and a metal back plate arranged on the back side of the display screen body, wherein the metal back plate is electrically connected with the grounding end of a circuit board of the display screen body, a first conducting layer is arranged between the metal back plate and the display screen body, a plurality of point discharge parts are arranged at the circumferential edge position of the first conducting layer, and two sides of the point discharge parts are respectively electrically connected with the display screen body and the metal back plate.
When the display screen body has static electricity, the static electricity can be gathered at the point discharge part and generate point discharge, so that the static electricity on the display screen body can be led out, the phenomenon of electrostatic breakdown is avoided, and the display effect and the yield of the display panel are improved.
In addition to the technical problems solved by the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems solved by the display panel and the display device according to the embodiments of the present invention, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail in the detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly described below, it is obvious that the drawings in the following description are only a part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a cross-sectional view of a display panel according to an embodiment of the present invention;
FIG. 2 is a top view of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a second conductive layer and a conductive pillar according to an embodiment of the present invention;
FIG. 4 is a first schematic view illustrating the installation of the insulation foam layer according to the embodiment of the present invention;
fig. 5 is a second schematic view illustrating the installation of the insulating foam layer according to the embodiment of the present invention;
fig. 6 is a third schematic view illustrating the installation of the insulating foam layer according to the embodiment of the present invention;
fig. 7 is a schematic connection diagram of a cover plate and a display screen body according to an embodiment of the present invention.
Description of reference numerals:
10-a display screen body;
20-a first conductive layer;
21-a tip discharge;
30-a metal back plate;
40-a second conductive layer;
50-a conductive post;
60-a circuit board;
70-insulating foam layer;
80-conducting structure;
90-cover plate.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all 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 protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Fig. 1 is a cross-sectional view of a display panel according to an embodiment of the present invention, and fig. 2 is a top view of the display panel according to the embodiment of the present invention.
As shown in fig. 1 and fig. 2, the display panel provided in the embodiment of the present invention includes a display panel body 10 and an electrostatic protection structure disposed on a back surface of the display panel body 10, where the electrostatic protection structure includes a metal back plate 30 and a first conductive layer 20 disposed on one side of the metal back plate 30; the first conductive layer 20 is located on one side of the metal back plate 30 facing the display screen body 10, and one side of the metal back plate 30 facing away from the display screen body 10 is electrically connected to a ground terminal of the circuit board 60 of the display screen body 10; the first conductive layer 20 has a plurality of point discharge portions 21 disposed at a circumferential edge thereof, and the point discharge portions 21 are electrically connected to the display panel 10 and the metal back plate 30, respectively.
Specifically, the display screen body 10 can be selected as a liquid crystal display screen, a metal back plate 30 is arranged on the back surface of the display screen body 10, and the display screen body 10 is generally rectangular; the metal back plate 30 may have a shape corresponding to the display screen body 10. The metal back plate 30 is preferably made of copper foil, and the copper foil has good conductivity and is beneficial to the transmission of static electricity on the metal back plate 30.
One side of the metal back plate 30, which faces away from the display screen body 10, is electrically connected to the ground terminal of the circuit board 60, one side of the metal back plate 30, which faces toward the display screen body 10, is provided with the first conductive layer 20, and the first conductive layer 20 is made of a conductive material with adhesive property, so that not only the metal back plate 30 can be adhered to the display screen body 10, but also static electricity in the display screen body 10 can be conducted to the metal back plate 30. In this embodiment, the metal back plate 30 is bonded to the display screen body 10, so as to enhance the structural strength of the back surface of the display screen body 10.
The first conductive layer 20 is provided at a circumferential edge thereof with a plurality of tip discharge portions 21, and each tip discharge portion 21 is connected to and electrically connected to the metal back plate 30 and the display screen body 10 at upper and lower sides of the tip discharge portion 21. In this embodiment, the side of the tip discharge portion 21 facing the display screen body 10 may be electrically connected to the front surface or the back surface of the display screen body 10, and since the front surface of the display screen body 10 is generally subjected to a power-on test during the power-on test of the display screen body 10, a large amount of static charges (static charges are low-voltage charges) may exist on the front surface of the display screen body 10, and in order to better derive the static charges in the display screen body 10, the side of the tip discharge portion 21 facing the display screen body 10 may be preferably electrically connected to the front surface of the display screen body 10.
It is understood that the first conductive layer 20 may be preferably made of an ESD adhesive having high voltage conduction and low voltage insulation properties, and the metal back plate 30 may be attached to the display panel body 10 by the ESD adhesive and electrically connected to the display panel body 10. The first conductive layer 20 provided in this embodiment can not only adhere the metal back plate 30 to the display screen body 10, but also reduce the discharge path of the electrostatic charges in the display screen body 10 due to the electrical characteristics of low voltage insulation and high voltage conduction of the first conductive layer 20, so that the electrostatic charges of the display screen body 10 are gathered toward the tip discharge portion 21, thereby improving the electrostatic discharge effect of the display screen body 10.
When the display screen body 10 is subjected to power-on detection, a certain amount of static charge can exist in the display screen body 10, the display panel provided by the embodiment can enable the static charge in the display screen body 10 to be accumulated at a point discharge part and form point discharge, the point discharge forms high-voltage charge which can be transmitted to the metal back plate 30 and transmitted to the grounding end of the circuit board 60 through the metal back plate 30, the static charge in the display screen body 10 is led out of the display panel, and the damage of the display panel caused by electrostatic breakdown can be avoided, so that the display effect of the display panel is influenced.
Fig. 3 is a schematic structural diagram of the second conductive layer and the conductive pillar according to the embodiment of the invention.
As shown in fig. 3, on the basis of the above embodiment, a second conductive layer 40 is disposed on a side of the metal back plate 30 facing away from the display screen body 10, and the second conductive layer 40 and the first conductive layer 20 are made of the same conductive material; the second conductive layer 40 is provided with conductive holes provided with conductive posts 50 made of anisotropic conductive adhesive; one end of the conductive pillar 50 is in contact with the metal back plate 30, and the other end is in contact with the ground terminal, and the conductive pillar 50 is electrically insulated from the second conductive layer 40.
Specifically, the second conductive layer 40 is disposed on one side of the metal back plate 30 away from the display screen body 10, that is, the first conductive layer 20 and the second conductive layer 40 are disposed on two sides of the metal back plate 30 in this embodiment, and the first conductive layer 20 and the second conductive layer 40 are both made of ESD glue with high voltage conduction and low voltage insulation, so as to effectively prevent external electrostatic charges from entering the display screen body 10 from one side of the metal back plate 30, reduce the amount of electrostatic charges in the display screen body 10, and facilitate reducing the occurrence of electrostatic breakdown of the display panel.
Further, in the process of testing the display panel, the test terminal can selectively apply charges to the front surface of the display screen body 10 or to the gap between the metal back plate and the display screen body, and when the charges are applied to the gap between the metal back plate and the display screen body, the static charges generated in the test process are transferred to the metal back plate 30; therefore, it can be known that the electrostatic charge on the metal backplate 30 includes the electrostatic charge transferred from the display screen body 10 to the metal backplate 30, and also includes the electrostatic charge generated by the test equipment directly electrifying and detecting the metal backplate 30; since the first conductive layer 20 and the second conductive layer 40 are disposed on two sides of the metal back plate 30, which is not beneficial to releasing low-voltage charges (static charges), in the embodiment, the second conductive layer 40 is provided with a conductive hole penetrating through the second conductive layer 40, and the conductive hole is filled with anisotropic conductive adhesive that is laterally insulated and longitudinally conductive to form the conductive pillar 50, that is, the conductive pillar 50 can be electrically insulated from the second conductive layer 40; one end of the conductive post 50 is electrically connected to the ground terminal of the circuit board 60. For example, a window may be opened at a position of the circuit board corresponding to the conductive pillar 50, so as to electrically connect the conductive pillar 50 with the ground terminal of the circuit board 60; the other end of the conductive post 50 is only required to be abutted against the metal back plate 30, so that the electrostatic charge (low-voltage charge) on the metal back plate 30 can be transferred to the ground end of the circuit board 60 and be led out.
On the basis of the above embodiment, an insulating foam layer 70 is further disposed between the metal back plate 30 and the display screen body 10, the insulating foam layer 70 is provided with a plurality of via holes, and the plurality of via holes are filled with a conductive material the same as the first conductive material.
Specifically, be provided with the cotton layer of insulating bubble 70 between metal backplate 30 and the display screen body 10, the cotton layer of insulating bubble 70 can cushion the impact force of external to the display screen body 10 among the test process, reduces the display screen body 10 breakage rate, promotes the yields of the display screen body 10. In addition, a plurality of via holes are formed in the insulating foam layer 70, the via holes can be uniformly distributed on the insulating foam layer 70, and the ESD conductive adhesive with high voltage conduction and low voltage insulation is filled in the via holes to form a via structure 80, the via structure 80 can diffuse high voltage charges generated on the display screen body 10 to the metal back plate 30 through ESD in the via holes, so as to provide a plurality of release paths for the high voltage charges formed on the display screen body 10, therefore, static charges (low voltage charges) generated on the display screen body 10 can be accumulated at the point discharge portion 21 to form high voltage charges and released, and if in the test process, the high voltage charges directly introduced by the display screen body can also be transferred to the metal back plate 30 through the via structure and released.
Fig. 4 is a first schematic view illustrating installation of the insulating foam layer according to the embodiment of the present invention.
As shown in fig. 4, in the present embodiment, the insulating foam layer 70 may be disposed between the first conductive layer 20 and the display screen body 10. Specifically, the first conductive layer 20 is disposed between the metal back plate 30 and the display screen body 10, the insulating foam layer 70 can be adhered to one side of the display screen body 10 facing the first conductive layer 20, the first conductive layer 20 covers the insulating foam layer 70, and the display screen body 10 and the metal back plate 30 can be electrically connected through a conducting structure disposed in the insulating foam layer 70. It is understood that the via structure 80 may be formed by flowing the conductive paste for forming the first conductive layer 20 into the via holes on the insulating foam layer 70 and solidifying the conductive paste.
Fig. 5 is a second schematic view illustrating installation of the insulating foam layer according to the embodiment of the present invention.
As shown in fig. 5, the insulating foam layer 70 may be disposed between the first conductive layer 20 and the metal back plate 30, the insulating foam layer 70 may be adhered to one side of the metal back plate 30 facing the display screen body 10, the first conductive layer 20 is formed on one side of the display screen body 10 facing the metal back plate 30, a plurality of via holes may be disposed on the insulating foam layer 70, and conductive paste forming the first conductive layer is filled in the via holes to form a conductive structure 80, one end of the conductive structure 80 is electrically connected to the first conductive layer 20, and the other end is electrically connected to the metal back plate 30.
Fig. 6 is a third schematic view illustrating installation of an insulating foam layer according to an embodiment of the present invention.
As shown in fig. 6, in order to reduce the thickness of the display panel, the insulating foam layer 70 and the first conductive layer 20 may be disposed on the same layer, that is, the insulating foam layer 70 may be bonded to one side of the metal back plate 30 facing the display panel 10, the insulating foam layer is disposed with a via hole, and the via hole is filled with a first conductive adhesive to form a conductive structure 80, one end of the conductive structure 80 is electrically connected to the display panel 10, and the other end is electrically connected to the metal back plate 30. Furthermore, one side of the insulating foam layer 70 is bonded to the metal back plate 30, the other side is bonded to the display screen body 10, a plurality of point discharge portions 21 are arranged at the circumferential edge of the insulating foam layer 70, the point discharge portions 21 are formed by laying conductive adhesive forming a first conductive layer, one side of each point discharge portion 21 is electrically connected to the display screen body 10, and the other side of each point discharge portion 21 is electrically connected to the metal back plate 30.
The preferred scheme of the embodiment is as follows: arranging an insulating foam layer 70 between the metal back plate 30 and the display screen body 10, arranging a plurality of via holes in the insulating foam layer 70, filling an ESD conductive adhesive in the via holes to form a via structure 80, and arranging a plurality of point discharge parts 21 in the circumferential direction of the insulating foam layer 70; when high-voltage charges exist on the display screen body 10, a plurality of release paths can be provided for the high-voltage charges, and the high-voltage charges can be released to the metal back plate 30 through the conducting structure 80, so that the high-voltage charges on the display screen body 10 can be rapidly led out; meanwhile, when electrostatic charges (low-voltage charges) exist on the display screen body, the electrostatic charges can be accumulated and form point discharges at the point discharge part, and the high-voltage charges formed by the point discharges are released to the metal back plate 30 through the point electricity-proof part 21, so that the electrostatic charges on the display screen body 10 can be rapidly led out.
On the basis of the above embodiment, the plurality of tip discharge portions 21 are uniformly distributed along the circumferential direction of the insulating foam layer 70. Specifically, a plurality of point discharge portions 21 are disposed in the circumferential direction of the insulating foam layer 70, so that the static charges of the display screen body 10 can be accumulated at the point portions to form point discharges, and the static charges in the display screen body 10 are conducted out. In order to avoid the damage to the display screen body 10 caused by the excessive concentration of static charges, a plurality of point discharge portions 21 may be uniformly distributed around the display screen body 10. It is understood that a plurality of the tip discharge portions 21 may be disposed at corners of the insulating foam layer 70.
For example, in the present embodiment, the insulating foam layer is rectangular, a point discharge portion 21 may be respectively disposed in four corners of the insulating foam layer 70, and the point discharge portion 21 may be triangular, the point discharge portion 21 includes a point portion, one side of the point portion is electrically connected to the metal back plate 30, and the other side of the point portion is electrically connected to the display screen 10, so that the electrostatic charge of the display screen 10 can be transmitted to the conductive pillar 50 through the metal back plate 30, and the conductive pillar 50 is connected to the ground terminal of the circuit board 60 and led out of the display screen 10. It is understood that the shape of the tip discharge portion 21 in the present embodiment is not limited to the triangle, and may be other regular shapes or irregular shapes having a tip.
Fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present invention.
As shown in fig. 7, the display device provided in this embodiment includes a cover plate 90 and the display panel, wherein the display panel includes a display body 10 and an electrostatic protection structure disposed on a back surface of the display body 10; the cover plate 90 provides protection for the display screen body 10, and the cover plate 90 is arranged on the front surface of the display screen body to prevent the display screen body 10 from being damaged due to impact of external force in the using process or the testing process.
The electrostatic protection structure is used for guiding out the electrostatic charges in the display screen body 10, and prevents electrostatic breakdown phenomenon caused by accumulated electrostatic charges of the display screen body 10. The electrostatic protection structure comprises a metal back plate 30 and a first conductive layer 20 arranged on one side of the metal back plate 30 facing the display screen body 10; a plurality of tip discharge parts 21 are disposed along a circumferential edge of the first conductive layer 20, and each tip discharge part 21 has a tip portion, one side of which is electrically connected to the metal back plate 30, and the other side of which is electrically connected to the other side of the display screen body 10.
When static electricity exists in the display screen body 10, the static electricity is accumulated at the point discharge part and forms point discharge, high-voltage charges formed by the point discharge can be transmitted to the metal back plate 30 through the point part, and the high-voltage charges released from the point are transmitted to the ground end through the metal back plate 30, so that the static electricity on the display screen body 10 is released to the ground end, and the phenomenon that the static electricity is accumulated in the display screen body 10 to break down the display screen body 10 is prevented.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A display panel is characterized by comprising a display screen body and an electrostatic protection structure arranged on the back of the display screen body;
the electrostatic protection structure comprises a metal back plate and a first conducting layer arranged on the metal back plate, the first conducting layer is positioned on one side, facing the display screen body, of the metal back plate, and one side, facing away from the display screen body, of the metal back plate is electrically connected with a grounding end of a circuit board of the display screen body;
the peripheral edge of the first conducting layer is provided with a plurality of point discharge parts which are respectively and electrically connected with the display screen body and the metal back plate;
the first conducting layer is made of conducting materials with high-voltage conduction and low-voltage insulation.
2. The display panel according to claim 1, wherein a second conductive layer is disposed on a side of the metal back plate facing away from the display screen body, and the second conductive layer and the first conductive layer are made of the same conductive material;
the second conductive layer is internally provided with a conductive hole, a conductive column composed of anisotropic conductive adhesive is arranged in the conductive hole, one end of the conductive column is electrically connected with the metal back plate, the other end of the conductive column is electrically connected with the grounding terminal, and the conductive column is electrically insulated from the second conductive layer.
3. The display panel according to any one of claims 1-2, wherein an insulating foam layer is disposed between the metal back plate and the display screen body;
the insulating foam layer is provided with a plurality of through holes, and the through holes are filled with conductive materials which are the same as the first conductive materials.
4. The display panel of claim 3, wherein the insulating foam layer is between the first conductive layer and the display screen body.
5. The display panel of claim 3, wherein the insulating foam layer is between the first conductive layer and the metal backplane.
6. The display panel according to claim 3, wherein the insulating bubble surface layer is disposed in the same layer as the first conductive layer.
7. The display panel according to claim 3, wherein a plurality of the point discharge portions are uniformly distributed along a circumferential direction of the insulating foam layer.
8. The display panel according to claim 7, wherein the insulating foam layer is rectangular, and one of the point discharge portions is disposed at each of corners of the insulating foam layer.
9. A display device comprising a cover plate and the display panel according to any one of claims 1 to 8;
the display panel comprises a display screen body and an electrostatic protection structure arranged on the back of the display screen body;
the cover plate is arranged on the front face of the display screen body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910748372.5A CN110426880B (en) | 2019-08-14 | 2019-08-14 | Display panel and device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910748372.5A CN110426880B (en) | 2019-08-14 | 2019-08-14 | Display panel and device |
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| CN110426880A CN110426880A (en) | 2019-11-08 |
| CN110426880B true CN110426880B (en) | 2022-02-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110867138A (en) * | 2019-11-28 | 2020-03-06 | 武汉天马微电子有限公司 | Display panel, manufacturing method and display device |
| CN211857976U (en) * | 2020-04-16 | 2020-11-03 | 北京京东方显示技术有限公司 | Display device |
| CN111782078B (en) * | 2020-06-19 | 2023-12-22 | 维沃移动通信有限公司 | Conductive foam and electronic equipment |
| CN113284419B (en) * | 2021-05-24 | 2022-11-29 | 合肥鑫晟光电科技有限公司 | Display panel, display device and vehicle-mounted display device |
| CN113629040B (en) * | 2021-07-23 | 2024-01-30 | 武汉华星光电半导体显示技术有限公司 | Display device |
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| CN110426880A (en) | 2019-11-08 |
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