CN107643635B - Display device and grounding device thereof - Google Patents
Display device and grounding device thereof Download PDFInfo
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- CN107643635B CN107643635B CN201710892047.7A CN201710892047A CN107643635B CN 107643635 B CN107643635 B CN 107643635B CN 201710892047 A CN201710892047 A CN 201710892047A CN 107643635 B CN107643635 B CN 107643635B
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- Prior art keywords
- circuit board
- printed circuit
- frame
- conductive film
- display panel
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1345—Conductors connecting electrodes to cell terminals
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
Abstract
The embodiment of the application provides a display device and a grounding device thereof, wherein the display device comprises: a display panel; a frame made of a non-conductive material, on which the display panel is disposed; a metal frame, in which the frame is encapsulated and a hollow region accommodating the display panel is formed; the printed circuit board is arranged below the frame and does not contact the metal side frame, and is electrically connected to the display panel through the flexible flat cable; a conductive film attached to and electrically connected to the ground terminal of the printed circuit board and the metal frame; and a protective layer made of an insulating material as an electrical barrier. In addition, the surface of the surface insulating cable is covered with a protective layer and is not connected with the protective layer on the covered printed circuit board; the tail end of the flexible flat cable is provided with an insulating connecting part, and the insulating connecting part is provided with an insulating shell and a port structure; the printed circuit board is provided with a port connecting piece corresponding to the port structure, and the port connecting piece is inserted into the port structure to enable the printed circuit board to be electrically connected with the surface insulation cable.
Description
Technical Field
The embodiment of the application relates to the technical field of display, in particular to a display device and a grounding device thereof.
Background
The liquid crystal display device is the display type with the highest market occupation rate at present, has the advantages of light weight, thinness, electricity saving and easy miniaturization, and leads the trace of the liquid crystal display device to be visible everywhere in daily life, and most of products such as mobile phones, notebook computers, digital video cameras, tablet computers and the like use the liquid crystal display device. Nowadays, the liquid crystal display device with the highest usage rate belongs to a thin film transistor type display device (TFT-LCD).
Liquid crystal display devices are non-self-luminous displays, which are different from Plasma Display Panels (PDP), organic Light Emitting Diode (OLED) and other technologies, and require additional backlight. Meanwhile, a specific signal is converted and output and voltage is switched by a driving circuit in the display device, so that the arrangement direction of liquid crystal molecules of the display panel is changed. The light generated by the backlight forms pixels through the panel, and forms a display screen through the high and low light transmittance of each pixel.
According to the display principle of the display device, external noise, charge or electric field change easily interferes with the arrangement of liquid crystal molecules, so that the displayed image is abnormal. Therefore, in order to prevent the interference, the printed circuit board provided with the driving circuit must be isolated from the external influence, and the interference to the signal transmitted by the printed circuit board is not generated due to the fact that the accumulated charges of the printed circuit board cannot be eliminated in the isolated period.
In the prior art, there have been some solutions proposed to address the above problems. As shown in fig. 1, a typical display device 10 includes a metal bezel 100, a frame 200, a display panel 300, and a printed circuit board 400. The display panel 300 is disposed on the upper surface of the frame 200, and the printed circuit board 400 is disposed on the lower surface of the frame 200. The display panel 300 and the frame 200 are electrically connected by a flexible flat cable 510. The metal frame 100 is sleeved outside the glue frame 200 from top to bottom, and has a hollow area exposing the display panel 300.
In order to prevent the above-mentioned problem that may occur due to the accumulation of charges on the printed circuit board 400, as shown in fig. 2, a ground terminal 430 is disposed at a side of the printed circuit board 400 adjacent to the metal casing 100, and the ground terminal 430 is fixed to the frame 200 by a screw 435. Meanwhile, the grounding spring plate 440 is provided to electrically connect the grounding terminal 430 to the metal frame 100. The grounding spring plate 440 is fixed to the metal frame 100 by another screw (not shown in the drawings). With the above arrangement, the charges accumulated on the printed circuit board 400 can be transferred to the metal frame 100 through the grounding spring sheet and released to the external environment.
However, in the above scheme, the metal frame is simultaneously connected to the display panel, and the accumulated charges still have a great chance to interfere with the alignment of the liquid crystal molecules by contact with the display panel, so there is still room for improvement.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present application is to provide a display device, so as to avoid the accumulated charges from affecting the display quality.
The embodiment of the application further solves the technical problem of providing a grounding device of a display device so as to avoid the influence of accumulated charges on the display quality.
In order to solve the above technical problems, an embodiment of the present application provides a display device, including:
a display panel;
a frame made of non-conductive material, wherein the display panel is arranged on the frame, and a through hole in the vertical direction is arranged in the frame, so that the flexible flat cable can be electrically connected to the display panel through the through hole;
a metal frame in which the frame is encapsulated and which forms a hollow region accommodating the display panel; a printed circuit board disposed under the frame without contacting the metal frame and electrically connected to the display panel through a flexible flat cable; a conductive film attached to and electrically connected to the ground terminal of the printed circuit board and the metal frame; and
a protective layer made of an insulating material, covering the printed circuit board and attached to the periphery of the printed circuit board by an adhesive material to fix the printed circuit board as an electrical barrier;
wherein the protective layer only covers the printed circuit board and the conductive film without extending to cover the flexible flat cable;
the tail end of the flexible flat cable is provided with an insulating connecting part, and the insulating connecting part is provided with an insulating shell and a port structure;
the printed circuit board is further provided with a port connecting piece corresponding to the port structure, and the printed circuit board is electrically connected with the flexible flat cable through inserting the port connecting piece into the port structure.
Optionally, the grounding terminal is disposed on a lower surface of the printed circuit board or extends from an edge of the printed circuit board to a side.
Alternatively, when the conductive film has a single-sided adhesive property, the protective layer is attached to and covers the conductive film by an adhesive material.
Alternatively, when the conductive film has double-sided adhesive properties, the protective layer is directly attached to the conductive film to cover the conductive film.
Alternatively, the conductive film having the double-sided adhesive property is attached to the periphery of the printed circuit board as the adhesive material, and the protective layer is covered and attached to the printed circuit board by the conductive film having the double-sided adhesive property.
On the other hand, the embodiment of the application also provides a grounding device of the display device, which comprises:
a metal frame in which a frame provided in the display device is encapsulated and which forms a hollow region accommodating a display panel provided in the display device;
the grounding end is arranged on the lower surface of the printed circuit board or extends from the edge of the printed circuit board to the side;
a conductive film attached to and electrically connected to the ground terminal of the printed circuit board and the metal frame; and
a protective layer made of an insulating material, covering the printed circuit board and attached to the periphery of the printed circuit board by an adhesive material to fix the printed circuit board as an electrical barrier;
the printed circuit board is electrically connected with the display panel through a flexible flat cable;
the surface of the flexible flat cable is covered with the protective layer, and the protective layer covering the flexible flat cable is not connected with the protective layer covering the printed circuit board;
the tail end of the flexible flat cable is provided with an insulating connecting part, and the insulating connecting part is provided with an insulating shell and a port structure;
the printed circuit board is further provided with a port connecting piece corresponding to the port structure, and the printed circuit board is electrically connected with the flexible flat cable through inserting the port connecting piece into the port structure.
Alternatively, when the conductive film has a single-sided adhesive property, the protective layer is attached to and covers the conductive film by an adhesive material.
Alternatively, when the conductive film has double-sided adhesive properties, the protective layer is directly attached to the conductive film to cover the conductive film.
Alternatively, the conductive film having the double-sided adhesive property is attached to the periphery of the printed circuit board as the adhesive material, and the protective layer is covered and attached to the printed circuit board by the conductive film having the double-sided adhesive property.
In still another aspect, an embodiment of the present application further provides a display apparatus, including:
a display panel;
a frame made of non-conductive material, wherein the display panel is arranged on the frame, and a through hole in the vertical direction is arranged in the frame, so that the flexible flat cable can be electrically connected to the display panel through the through hole;
a metal frame in which the frame is encapsulated and which forms a hollow region accommodating the display panel;
a printed circuit board disposed under the frame without contacting the metal frame and electrically connected to the display panel through a flexible flat cable;
a conductive film attached to and electrically connected to the ground terminal of the printed circuit board and the metal frame; and
a protective layer made of an insulating material, covering the printed circuit board and attached to the periphery of the printed circuit board by an adhesive material to fix the printed circuit board as an electrical barrier;
wherein the protective layer only covers the printed circuit board and the conductive film without extending to cover the flexible flat cable;
the tail end of the flexible flat cable is provided with an insulating connecting part, and the insulating connecting part is provided with an insulating shell and a port structure;
the printed circuit board is further provided with a port connecting piece corresponding to the port structure, and the printed circuit board is electrically connected with the flexible flat cable through inserting the port connecting piece into the port structure;
the grounding end is arranged on the lower surface of the printed circuit board or extends from the edge of the printed circuit board to the side;
wherein, when the conductive film has single-sided adhesive property, the protective layer is attached by an adhesive material and covers the conductive film; when the conductive film has double-sided adhesive property, the conductive film is attached to the periphery of the printed circuit board to serve as the adhesive material, and the protective layer is covered by the conductive film with double-sided adhesive property and is directly attached to the printed circuit board.
By adopting the technical scheme, the embodiment of the application has at least the following beneficial effects: the liquid crystal display device and the grounding device thereof provided by the embodiment of the application improve the structure formed by utilizing the components such as the screws, the grounding spring plates and the like in the prior art, save the space occupied by the components and enable the display device to be more light and handy. In addition, the additionally arranged insulating connecting part can strengthen the stability between the cable and the printed circuit board and prolong the service life of the display device. The insulating shell can use an insulating material with higher rigidity than the protective layer, so that the relatively fragile connecting part is protected, and the falling off or damage caused by collision or other factors in manufacturing is avoided. In addition, the protective layer does not need to extend to cover the flexible flat cable, so that the manufacturing is easier.
Drawings
The above and other features and advantages will become more apparent to those skilled in the art by describing in detail exemplary embodiments with reference to the attached drawings. In addition, the size proportion and the arrangement position of each component are shown in the drawings to facilitate the detailed description of the relationship therebetween, and are not used to limit the size and the position relationship of the components.
Fig. 1 is a schematic view of a circuit board of a display device in the prior art grounded through a metal frame.
Fig. 2 is a schematic diagram of a bottom structure of the display device shown in fig. 1.
Fig. 3A is a schematic view of a portion of a display device according to an embodiment of the application and a schematic view of an internal structure of a dotted line area thereof.
Fig. 3B and 3C are schematic partial structures of a display device according to an embodiment of the application.
Fig. 3D is a schematic diagram of a bottom partial structure of a display device according to an embodiment of the application.
Fig. 4A and 4B are schematic bottom partial structures of a display device according to an embodiment of the application.
Fig. 4C is a bottom partial structural side view of a display device according to an embodiment of the present application.
Fig. 4D is a schematic diagram of a bottom partial structure of a display device according to an embodiment of the application.
Fig. 4E is a side view of a bottom partial structure of a display device according to an embodiment of the application.
Fig. 5 is a side view of a bottom partial structure of a display device according to an embodiment of the present application.
Fig. 6 is a schematic partial structure of a display device according to an embodiment of the application.
Fig. 7 is a side view of a bottom partial structure of a display device according to an embodiment of the present application.
Fig. 8A and 8B are schematic partial structures of a display device according to another embodiment of the application.
Detailed Description
Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings; they may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.
In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not imply that the devices or components referred to must have a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the mechanical connection and the electrical connection can be adopted; can be directly connected or indirectly connected through an intermediate medium. The terms "attached" and "affixed" are to be understood in a broad sense, and may be, for example, partially attached, completely adhered, or detachably attached. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 3A, an embodiment of the present application provides a display device 900 having a display panel 130. The display panel 130 is disposed on the frame 110, alternatively, the frame 110 may be formed of any non-conductive material capable of being supported without deformation, but is not limited thereto. The metal side frames 101 are disposed on four side walls of the frame 110, and the metal side frames 101 may be directly fixed on the four side walls of the frame 110, or may leave a space with the frame 110 for disposing other wires or components. In the case of the above-described indwelling space, the metal side frame 101 may be fixed in a relative position to the frame 110 by other means. The top side protective frame 102 is disposed above the frame 110 and the display panel 130, alternatively, the top side protective frame 102 may be made of any non-conductive material capable of supporting without deformation, but is not limited thereto. The top side protection frame 102 has a hollow area for exposing the display panel 130. The area of the hollow area is smaller than that of the display panel 130, so that the stability of the display panel fixed on the frame 110 can be further improved when the top protection frame 102 is disposed above the frame 110 and the display panel 130. The topside protection frame 102 may be secured to the frame 110 in any suitable manner, such as: the top side protection frame 102 may be directly adhered to the frame 110 by using an adhesive material, or the top side protection frame 102 and the metal side frame 101 may have corresponding connection components, so that the top side protection frame 102 may be disposed by fixing the relative positions of the top side protection frame 102 and the metal side frame 101 through the connection components, and then further fixed to the frame 110, but the method is not limited to the above.
Alternatively, as shown in the prior art of fig. 1, an integrally formed metal frame 103 may be used instead of the metal side frame 101 and the top side protection frame 102. The metal frame 103 will be provided instead of the metal side frame 101 and the top side protection frame 102 as an example below, but the actual implementation is not limited thereto.
The printed circuit board 150 is disposed under the frame 110, for example: may be disposed directly under the frame 110 or a portion of the bottom of the frame 110 may be cut away to allow the printed circuit board 150 to be partially embedded in the frame 110. The printed circuit board 150 may not contact the metal frame 103 when disposed. The printed circuit board 150 may transmit signals required for displaying images to the display panel 130 through the flexible flat cable 151. As shown in fig. 3A, the flexible flat cable 151 may be electrically connected to the display panel 130 along the surface of the frame 110 through the remaining space between the metal frame 103 and the frame 110. Alternatively, as shown in fig. 3B and 3C, the through holes 120 are formed in the frame 110 in a vertical direction, so that the flexible flat cable 151 can be electrically connected to the display panel 130 through the through holes 120.
Since the frame 110 itself is made of insulating material, the inner wall of the through hole 120 is also made of insulating material, so that the signal transmitted by the flexible flat cable 510 is less likely to be disturbed, compared with the case where the flexible flat cable 151 is connected to the display panel 130 along the outside of the frame 110 and connected to the display panel 130 from the inside of the frame through the through hole 120. If the external connection is through the frame 110, a protection layer 170 is optionally added on the surface thereof as described later to prevent signal interference.
As shown in fig. 3D, the printed circuit board 150 may have a ground terminal 153, alternatively, the ground terminal 153 may be disposed to extend outwardly from an edge of the printed circuit board 150, but not disposed on the same edge as the flexible flat cable 151 so as not to be inadvertently contacted. The display device 900 further includes a conductive film 160. The conductive film 160 may be electrically connected to the ground 153 of the printed circuit board 150 and the metal frame 103, so that charges accumulated on the printed circuit board 150 may be moved to the metal frame 103 through the conductive film 160 and then released to the external environment. The conductive film 160 may be attached to the printed circuit board 150 and the metal frame 103 by an adhesive material. Alternatively, the conductive film 160 is a conductive tape having a single-sided adhesive property or a double-sided adhesive property. The material of the conductive film 160 may be, for example, aluminum foil, copper foil, conductive polymer, or the like, but is not limited thereto.
In addition to the above arrangement, as shown in fig. 4A, a plurality of grounding terminals 153 may be provided to enhance the grounding effect. In another embodiment of the present application, the grounding terminals 153 may be disposed at the same edge of the printed circuit board 150, or disposed at different edges, but not disposed at the same edge as the flexible flat cable 151 to avoid inadvertent contact. In the case of disposing the plurality of grounding terminals 153, the conductive film 160 may be divided into a plurality of segments, and the plurality of grounding terminals 153 are electrically connected to the metal frame 103.
The display device 900 further includes a protective layer 170, and the protective layer 170 may be made of an insulating material. As shown in fig. 4B, when the conductive film 160 is a conductive tape having a single-sided adhesive property, the protective layer 170 may be coated on the printed circuit board 150 and attached to the periphery of the printed circuit board 150 and the periphery of the conductive film 160 through the adhesive layer 180 to fix the printed circuit board 150 and the conductive film 160. Meanwhile, the protection layer 170 can serve as an electrical barrier to isolate the circuits and components on the printed circuit board 150 from the outside, so as to avoid abnormal display results caused by interference signals of external environment factors. A schematic side view of the above structure is shown in fig. 4C. The protection layer 170 may further extend and cover the flexible flat cable 151 to serve as an electrical barrier to avoid interference from external environmental factors. Further, the protective layer 170 may fix the flexible flat cable 151 by an adhesive material while covering the flexible flat cable 151.
The display device provided by the embodiment of the application and the grounding device formed by the combination of the printed circuit board, the metal frame, the conductive film and the protective layer in the embodiments can effectively improve the problems of the grounding device in the prior art. In the prior art, a plurality of grounding spring plates are arranged to electrically connect the grounding end to the metal frame. In contrast, the portion of the present application contacting the display panel 130 has only the frame 110 and the top-side protection frame 102 of non-conductive material, so that the charges transferred to the metal side frame 101 through the conductive film 160 do not affect the display panel 130 and the effect of releasing the charges to the external environment through the metal side frame 101. In addition, the structure of the conductive film 160 with adhesion property is used to replace the screw and the grounding spring plate, so that a plurality of steps in the manufacturing process can be reduced, the space occupied by the screw and the grounding spring plate can be saved, and a lighter and thinner display device can be manufactured. On the other hand, the through hole 120 provided in the frame 110 of the present application can prevent the signal from being disturbed without adding the protection layer 170 on the flexible flat cable 151, and although the step of providing the through hole is added in the manufacturing process, the material of the through hole 120 of the frame 110 should have a protection effect compared with that of adding the protection layer 170.
In addition to the above embodiments, the present application may be further improved by optimizing several components thereof according to actual situations and requirements, and the following description will illustrate different embodiments.
In an embodiment, the conductive film 160 is optimized, and the conductive film 160 having a double-sided adhesive property is used instead of the conductive film 160 having a single-sided adhesive property, and the rest is the same as the foregoing embodiment. As shown in fig. 4D, when the conductive film 160 is a conductive tape having a double-sided adhesive property, the conductive film 160 may be adhered around the printed circuit board 150 in addition to electrically connecting the conductive film 160 to the ground terminal 153 and the metal frame 103. Then, the protective layer 170 is adhered to the printed circuit board 150, the ground terminal 153 and the metal frame 103 by the adhesion property of the exposed surface of the conductive film 160. Compared with the conductive film 160 with single-sided adhesive property, the conductive film 160 with double-sided adhesive property is used to replace the adhesive layer 180, so that the thickness of the adhesive layer 180 can be omitted, and the step of disposing the adhesive layer 180 in the manufacturing process of the display device can be omitted. A schematic side view of the above structure is shown in fig. 4E.
In another embodiment, the ground 153 is optimized for placement on the lower surface of the printed circuit board 150, rather than extending outside the edge of the printed circuit board, the remainder of the placement being the same as the previous embodiment. As shown in fig. 5, since the conductive film 160 is a conductive tape and has a certain degree of flexibility, the ground terminal is provided on the lower surface of the printed circuit board 150, and the arrangement of the conductive film 160 and the protective layer 170 is not affected. The arrangement method can reduce the manufacturing difficulty of the grounding terminal 153.
In another embodiment, the printed circuit board 150, the flexible flat cable 151 and the protective layer 170 are optimized, and the insulating connecting portion 155 is added, and the other configurations are the same as those of the previous embodiment. As shown in fig. 6, a flexible flat cable whose surface is covered with the same insulating material as the protective layer 170 in advance is used instead of the flexible flat cable 151, and is defined as a surface insulating cable 1511. An insulating connection 155 is added to the tail end of the surface insulated cable 1511, i.e., the connection with the printed circuit board 150. The insulating connection 155 has an insulating housing and a fixable port structure to electrically connect other components to the surface insulated cable 1511. In addition, a printed circuit board 1501 having a port connector corresponding to the above-described port structure is used instead of the printed circuit board 150, and the port connector is inserted into the port structure to electrically connect the printed circuit board 1501 and the surface insulation cable 1511. Thereafter, when the protective layer 170 is provided, the protective layer 170 need only be provided on the printed circuit board 1501 and the conductive film 160, and does not need to extend to cover the surface insulation cable 1511. Since the surface of the surface insulated cable 1511 is an insulating protective material, it is not susceptible to other disturbances. The added insulating connecting part 155 can strengthen the stability between the cable and the printed circuit board and prolong the service life of the display device. Wherein, the insulating shell can use an insulating material with higher rigidity than the protective layer 170, so as to protect the relatively fragile connection part, thereby avoiding the falling off or damage caused by collision or other factors in the manufacturing process. In addition, since the protective layer 170 does not need to extend over the surface insulated cable 1511, it is easier to manufacture.
In another embodiment, the ground terminal 153 of the printed circuit board 150 may be optimized, and the ground terminal 153 may be disposed at the edge of the printed circuit board 150 and extend to the outside to the boundary of the protruding frame 110, and the rest is the same as the previous embodiment. As shown in fig. 7, the ground terminal 153 extends from the edge of the printed circuit board 150 like the outside and directly contacts the bottom of at least one of the four sides of the metal frame 103. In this case, the charges accumulated in the printed circuit board 150 can be directly transferred to the metal frame 103 through the ground 153 without providing the conductive film 160. The grounding terminal 153 and the metal frame 103 may be fixed and electrically connected by an adhesive material, a metal member such as a screw, or any conventional method. Alternatively, the metal frame 103 may have a slot capable of being sleeved with the grounding end 153, so that the grounding end 153 is directly inserted into the slot for fixing, and is electrically connected with the metal frame 103. Alternatively, the grounding terminal 153 may be electrically connected to and fixed to the slot of the metal frame 103 by an adhesive material having conductivity; alternatively, the grounding terminal 153 may be electrically connected to and fixed to the slot of the metal frame 103 through a port structure; alternatively, the grounding terminal 153 may be penetrated by a metal member such as a screw, and electrically connected to and fixed in the slot of the metal frame 103. Optionally, the portion of the printed circuit board 150 protruding from the frame 110 contains only the ground 153 and no other circuitry. After the grounding terminal 153 is electrically connected to the metal frame 103, the protection layer 170 is disposed from the bottom side upwards to serve as an electrical barrier.
In yet another embodiment, the structure of the printed circuit board 150, the flexible flat cable 151, and the through holes 120 described above may be optimized. As shown in fig. 8A and 8B, the conductive portion 190 is provided on the rear side of the printed circuit board 150, that is, the side facing the frame 110. In addition, the opening of the through-hole 120 facing the printed circuit board 150 is provided in a specific shape, which is optionally engaged with the conductive part 190. When the printed circuit board 150 is disposed on the lower surface of the frame 110, the conductive portion 190 is fixed in the through hole, and the flexible flat cable 151 passes through the conductive portion 190 and the through hole 120 directly to electrically connect the printed circuit board 150 and the display panel 130. In this case, the connection between the printed circuit board 150 and the flexible flat cable 151 is completely located in the through hole 120, and no additional insulation between the protective layer 170 and the outside is required. The display panel may be, for example, an LCD display panel, an OLED display panel, a QLED display panel, a curved display panel, or other display panel.
The foregoing is a detailed description of alternative embodiments in accordance with the application and is not intended to limit the scope of the claims. It will be appreciated by those skilled in the art that changes could be made to the embodiments described above without departing from the broad inventive concept and spirit thereof. The scope of the claims should therefore be studied to determine the true scope of this application.
Claims (6)
1. A display device, comprising:
a display panel;
a frame made of non-conductive material, wherein the display panel is arranged on the frame, and a through hole in the vertical direction is arranged in the frame, so that the flexible flat cable can be electrically connected to the display panel through the through hole;
a metal frame in which the frame is encapsulated and which forms a hollow region accommodating the display panel;
a printed circuit board disposed under the frame without contacting the metal frame and electrically connected to the display panel through the flexible flat cable;
a conductive film attached to and electrically connected to the ground terminal of the printed circuit board and the metal frame; and
a protective layer made of an insulating material, covering the printed circuit board and attached to the periphery of the printed circuit board by an adhesive material to fix the printed circuit board as an electrical barrier;
wherein the protective layer only covers the printed circuit board and the conductive film without extending to cover the flexible flat cable;
the tail end of the flexible flat cable is provided with an insulating connecting part, and the insulating connecting part is provided with an insulating shell and a port structure;
the printed circuit board is further provided with a port connecting piece corresponding to the port structure, and the printed circuit board is electrically connected with the flexible flat cable through inserting the port connecting piece into the port structure.
2. The display device of claim 1, wherein the ground terminal is disposed on a lower surface of the printed circuit board or extends sideways from an edge of the printed circuit board.
3. The display device according to claim 1, wherein when the conductive film has a single-sided adhesive property, the protective layer is attached to and covers the conductive film by an adhesive material.
4. The display device according to claim 1, wherein when the conductive film has double-sided adhesive properties, the protective layer is directly attached to the conductive film so as to cover the conductive film.
5. The display device according to claim 4, wherein the conductive film having double-sided adhesive property is attached to a periphery of the printed circuit board as the adhesive material, and the protective layer is covered and attached to the printed circuit board by the conductive film having double-sided adhesive property.
6. A display device, comprising:
a display panel;
a frame made of non-conductive material, wherein the display panel is arranged on the frame, and a through hole in the vertical direction is arranged in the frame, so that the flexible flat cable can be electrically connected to the display panel through the through hole;
a metal frame in which the frame is encapsulated and which forms a hollow region accommodating the display panel;
a printed circuit board disposed under the frame without contacting the metal frame and electrically connected to the display panel through a flexible flat cable;
a conductive film attached to and electrically connected to the ground terminal of the printed circuit board and the metal frame; and
a protective layer made of an insulating material, covering the printed circuit board and attached to the periphery of the printed circuit board by an adhesive material to fix the printed circuit board as an electrical barrier;
wherein the protective layer only covers the printed circuit board and the conductive film without extending to cover the flexible flat cable;
the tail end of the flexible flat cable is provided with an insulating connecting part, and the insulating connecting part is provided with an insulating shell and a port structure;
the printed circuit board is further provided with a port connecting piece corresponding to the port structure, and the printed circuit board is electrically connected with the flexible flat cable through inserting the port connecting piece into the port structure;
the grounding end is arranged on the lower surface of the printed circuit board or extends from the edge of the printed circuit board to the side;
wherein, when the conductive film has single-sided adhesive property, the protective layer is attached by an adhesive material and covers the conductive film; when the conductive film has double-sided adhesive property, the conductive film is attached to the periphery of the printed circuit board to serve as the adhesive material, and the protective layer is covered by the conductive film with double-sided adhesive property and is directly attached to the printed circuit board.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710892047.7A CN107643635B (en) | 2017-09-27 | 2017-09-27 | Display device and grounding device thereof |
| PCT/CN2018/107578 WO2019062753A1 (en) | 2017-09-27 | 2018-09-26 | Display device, manufacturing method therefor, and grounding device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710892047.7A CN107643635B (en) | 2017-09-27 | 2017-09-27 | Display device and grounding device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107643635A CN107643635A (en) | 2018-01-30 |
| CN107643635B true CN107643635B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710892047.7A Active CN107643635B (en) | 2017-09-27 | 2017-09-27 | Display device and grounding device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107643635B (en) |
| WO (1) | WO2019062753A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643635B (en) * | 2017-09-27 | 2023-10-20 | 惠科股份有限公司 | Display device and grounding device thereof |
| CN108799937A (en) * | 2018-06-28 | 2018-11-13 | 武汉华星光电技术有限公司 | A kind of backlight module and display panel |
| CN113570969B (en) * | 2021-07-23 | 2022-07-08 | 惠科股份有限公司 | Display device |
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| CN1544976A (en) * | 2003-11-14 | 2004-11-10 | 友达光电股份有限公司 | Earthing device and circuit board of liquid crystal display |
| CN1971344A (en) * | 2005-11-24 | 2007-05-30 | 群康科技(深圳)有限公司 | Display module |
| JP2010271381A (en) * | 2009-05-19 | 2010-12-02 | Nippon Seiki Co Ltd | Liquid crystal display device |
| CN104992956A (en) * | 2015-05-15 | 2015-10-21 | 深圳市华星光电技术有限公司 | Frameless display apparatus and manufacture method thereof |
| CN205750197U (en) * | 2016-07-07 | 2016-11-30 | 京东方科技集团股份有限公司 | Display floater and display device |
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| TW200515036A (en) * | 2003-10-17 | 2005-05-01 | Au Optronics Corp | Grounding device of liquid crystal display circuit board |
| JP5172809B2 (en) * | 2008-12-19 | 2013-03-27 | 株式会社ジャパンディスプレイセントラル | Image display device |
| KR102367317B1 (en) * | 2015-03-23 | 2022-02-25 | 삼성디스플레이 주식회사 | Printed Circuit Board Assembly |
| CN107688261A (en) * | 2017-09-27 | 2018-02-13 | 惠科股份有限公司 | Display device and its earthing or grounding means |
| CN107561797A (en) * | 2017-09-27 | 2018-01-09 | 惠科股份有限公司 | The manufacture method of display device and its earthing or grounding means |
| CN107643635B (en) * | 2017-09-27 | 2023-10-20 | 惠科股份有限公司 | Display device and grounding device thereof |
| CN107688262A (en) * | 2017-09-27 | 2018-02-13 | 惠科股份有限公司 | Display device and its earthing or grounding means |
| CN107688259A (en) * | 2017-09-27 | 2018-02-13 | 惠科股份有限公司 | Display device and its earthing or grounding means |
| CN107688260A (en) * | 2017-09-27 | 2018-02-13 | 惠科股份有限公司 | Display device and its earthing or grounding means |
-
2017
- 2017-09-27 CN CN201710892047.7A patent/CN107643635B/en active Active
-
2018
- 2018-09-26 WO PCT/CN2018/107578 patent/WO2019062753A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544976A (en) * | 2003-11-14 | 2004-11-10 | 友达光电股份有限公司 | Earthing device and circuit board of liquid crystal display |
| CN1971344A (en) * | 2005-11-24 | 2007-05-30 | 群康科技(深圳)有限公司 | Display module |
| JP2010271381A (en) * | 2009-05-19 | 2010-12-02 | Nippon Seiki Co Ltd | Liquid crystal display device |
| CN104992956A (en) * | 2015-05-15 | 2015-10-21 | 深圳市华星光电技术有限公司 | Frameless display apparatus and manufacture method thereof |
| CN205750197U (en) * | 2016-07-07 | 2016-11-30 | 京东方科技集团股份有限公司 | Display floater and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019062753A1 (en) | 2019-04-04 |
| CN107643635A (en) | 2018-01-30 |
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