Patent Description:
A display device includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP), an electroluminescence device, or the like.

As an example of the electroluminescence device, an organic light-emitting display device of an active matrix type using an organic light-emitting diode (OLED) is commercially available. Since the organic light-emitting display device is a self-luminous device, the organic light-emitting display device has no backlight compared to the liquid crystal display, and has advantages in response speed, a viewing angle, or the like and thus is attracting attention as a next-generation display device.

The display device includes a display panel on which an image is displayed, and a module cover covering an outer circumference and a rear surface of the display panel.

In a conventional display device, since the module cover is metal, a PCB such as a main board can be in contact with the module cover and function as a ground for the PCB. In other words, as the PCB is directly in contact with the module cover and is grounded, electromagnetic interference (EMI) could be reduced.

However, in recent years, there is a trend of changing the design of the module cover to form a portion of an outer appearance of the display device, and accordingly, a coating layer is formed on the surface of the module cover. Therefore, even if the PCB is in contact with the module cover, there was a problem that the grounding performance of the module cover was deteriorated due to the coating layer, and to solve this problem, a method of using a separate conductive tape (EMI Tape) was devised, but there is a problem additional cost occurs, the manufacturing process thereof becomes complicated, and it is difficult to ensure uniform quality so that the reliability of the grounding deteriorates.

<CIT> discloses a mold frame structure of a liquid crystal display. <CIT> relates to a liquid crystal device. <CIT> relates to a display apparatus having an LCD panel.

One problem to be solved by the present disclosure is to provide a display device with improved EMI due to a PCB while using a module cover including a coating layer having high insulation resistance on the surface thereof.

Another problem to be solved by the present disclosure is to provide a display device in which a PCB is grounded to a module cover by a restriction member that restricts the PCB and the side bracket.

The invention is defined in the independent claim. Dependent claims describe preferred embodiments.

A display device according to the present disclosure includes a display panel, a module cover disposed behind the display panel, a PCB mounted on a rear surface of the module cover, a side bracket connected to a side of the PCB and restricted by the rear surface of the module cover, and a restriction member restricting the PCB and the side bracket to the module cover and grounding the PCB to the module cover. The restriction member includes a head portion which is in contact with the PCB and restricts the side bracket, and a fastening portion extending from the head portion and fastened to the module cover.

The module cover may include a cover main body which is made of metal and in contact with the fastening portion, and a coating layer which is coated on a surface of the cover main body, has an insulation resistance higher than that of the cover main body, and is in contact with the PCB.

The side bracket includes a bracket body having a terminal hole corresponding to a terminal provided in the PCB, and a PCB connector protruding from the bracket body and restricted by the head portion.

A fixing recess in which a portion of the fastening portion is located is formed in the PCB.

The PCB connector may include a contact portion which has an open hole larger than the head portion and is in contact with the PCB, and a fixing piece which is connected to the contact portion and inserted into the fixing recess.

The head portion may include a first region which is in contact with the PCB; and a second region which is in contact with the fixing piece.

An area of the first region may be wider than an area of the second region.

At least a portion of an outer circumference of the head portion may be surrounded by an inner circumference of the opening hole.

The side bracket may further include at least one of a latch protruding from the bracket body and connected to the PCB and a rib protruding from the bracket body and supporting the PCB.

The side bracket may include a latch protruding from the bracket body and connected to one of a front surface and a rear surface of the PCB, and a rib protruding from the bracket body and supporting the other of the front surface and the rear surface of the PCB.

The module cover may be made of Pre-Coated Metal, PCM, material.

The head portion may include a small-diameter portion which is in contact with the PCB; and a large-diameter portion having a larger diameter than the small-diameter portion and restricting the side bracket.

According to a preferred embodiment of the present disclosure, since the PCB can be grounded to the module cover by the restriction member, EMI caused due to the PCB can be improved.

In addition, since the cover module forming the outer appearance of the display device includes a coating layer having high insulation resistance, the safety of the display device can be improved, and the outer appearance of the display device can be improved in design.

In addition, compared to a case where the PCB is grounded with the module cover using a separate subsidiary material such as a conductive tape, the cost is reduced, the manufacturing process is simplified, and the reliability of grounding is improved by securing uniform quality.

In addition, the side bracket can be temporarily fixed to the PCB by the latch and rib of the side bracket. Accordingly, since the restriction member can be fastened to the module cover while the side bracket and the PCB are temporarily fixed, ease of assembly can be improved.

In addition, since the fixing piece is fitted and fixed in the fixing recess of the PCB, and the fixing piece is restricted by the restriction member, the connection between the PCB and the side bracket can be solid.

Hereinafter, specific embodiments of the present disclosure will be described in detail together with the drawings.

<FIG> is a perspective view illustrating a display device according to an embodiment of the present disclosure, <FIG> is a view illustrating a display panel and a module cover, <FIG> is a rear perspective view illustrating a display device according to an embodiment of the present disclosure, and <FIG> is a rear view illustrating a state where a back cover illustrated in <FIG> is removed.

A display device according to an embodiment of the present disclosure may include a display module <NUM>, a stand 1A supporting the display module <NUM> from below, and a back cover <NUM> located at the rear of the display module <NUM>.

The display module <NUM> may have a substantially rectangular plate shape. In more detail, the display module <NUM> may include a first long side LS1, a second long side LS2 facing the first long side LS1, a first short side SS1 adjacent to one ends of the first long side LS1 and the second long side LS2, and a second short side SS2 facing the first short side SS1.

The first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 may mean an upper side, a lower side, a left side, and a right side of the display module <NUM>, respectively.

The lengths of the first and second long sides LS1 and LS2 may be formed longer than the lengths of the first and second short sides SS1 and SS2 but are not limited thereto, and the lengths of the first and second long sides LS1 and LS2 also possible to be approximately the same as the lengths of the first and second short sides SS1 and SS2.

In addition, a point where the first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 meet each other may be referred to as a corner. For example, the point where the first long side LS1 and the first short side SS1 meet can be referred to as a first corner C1, the point where the first long side LS1 and the second short side SS2 can be referred to as a second corner C2, the point where the second short side SS2 and the second long side LS2 meet can be referred to as a third corner C3, and the point where the second long side LS2 and the first short side SS1 meet can be referred to as a fourth corner C4.

The display module <NUM> may be supported by the stand 1A. The stand 1A may support the display module <NUM> at the bottom of the display module <NUM>.

The display module <NUM> may include a display panel <NUM> that displays an image, and a module cover <NUM> that covers the display panel <NUM> from the rear.

The display panel <NUM> may be an OLED panel. The display panel <NUM> may display an image forward.

The module cover <NUM> may be configured as a square frame. The module cover <NUM> may include a cover main body 20B (see <FIG>) made of a metal material, and a coating layer 20C (see <FIG>) coated on the surface of the cover main body 20B. The insulation resistance of the coating layer 20C may be greater than the insulation resistance of the cover main body 20B.

For example, the module cover <NUM> may be made of a Pre-Coated Metal (PCM) material.

The module cover <NUM> may include a cover body <NUM> located at the rear of the display panel <NUM> and a cover circumference part <NUM> protruding forward from the circumference of the cover body <NUM> and surrounding the outer circumference of the display panel <NUM>. The module cover <NUM> may further include a heat dissipation plate (not illustrated) attached to the rear surface of the display panel <NUM> in a front and rear direction.

An electrical mounting part <NUM> may be formed on the rear surface of the module cover <NUM>. In more detail, the electrical mounting part <NUM> may be formed on the rear surface of the cover body <NUM>. The electrical mounting part <NUM> may be formed as a separate member from the module cover <NUM> and fastened to the module cover <NUM>, or the module cover <NUM> may be molded and formed integrally with the module cover <NUM>.

Electrical components such as a system board (SB) and a power supply (PS) may be mounted on the electrical mounting part <NUM>.

The power supply (PS) may convert commercial AC power into driving power of the system board (SB) and the display panel <NUM> driving circuit. The system board (SB) may supply DC input power from the power supply (PS) to the display panel <NUM> driving circuit and transmit an image signal and a timing signal synchronized with the image signal to the display panel <NUM> driving circuit.

System board (SB) may be a system board for various display applications such as a television system, a set-top box, a navigation system, a DVD player, a Blu-ray player, a personal computer (PC), a home theater system, a phone system, a vehicle control system, or the like.

The system board (SB) may include the PCB <NUM>. The PCB <NUM> may include a tuner that receives a broadcast signal, an external device interface connected to an external device, a user interface device that receives a user input, various sensors, or the like.

At least one side bracket <NUM> is connected to the side of the PCB <NUM>. The side bracket <NUM> may be fastened to the electrical mounting part <NUM> of the module cover <NUM> together with the PCB.

Meanwhile, the back cover <NUM> may cover the electrical mounting part <NUM> and the electrical part such as the PCB <NUM> mounted on the electrical mounting part <NUM> from the rear. The back cover <NUM> may be fastened to the rear surface of the module cover <NUM>.

<FIG> is a view illustrating a state where a PCB and a side bracket are separated from a module cover according to an embodiment of the present disclosure, <FIG> is a view for explaining a state where the PCB and the side bracket illustrated in <FIG> are restricted to the module cover by a restriction member, <FIG> is a sectional view illustrating a state where a PCB and a side bracket are restricted to a module cover by a restriction member according to an embodiment of the present disclosure, <FIG> is an enlarged view illustrating a fixing recess of a PCB and a PCB connector of a side bracket, and <FIG> is a rear view illustrating a PCB and a side bracket according to an embodiment of the present disclosure.

The PCB <NUM> and the side bracket <NUM> are mounted on the rear surface of the module cover <NUM>. In more detail, the PCB <NUM> and the side bracket <NUM> may be fastened to the electrical mounting part <NUM> formed on the rear surface of the module cover <NUM>.

A protrusion <NUM> which protrudes toward the rear and is in contact with the PCB <NUM> may be formed on the electric mounting part <NUM>. The protrusion <NUM> may be in contact with the front surface of the PCB <NUM> and support the PCB <NUM> in the front and rear direction.

A fastening hole <NUM> may be formed in the protrusion <NUM>. The fastening hole <NUM> may be formed by penetrating the protrusion <NUM> in the front and rear direction. A female thread may be formed in the inner circumference of the fastening hole <NUM>. The fastening portion <NUM> of the restriction member <NUM> to be described later may be inserted into the fastening hole <NUM> to be fastened.

The PCB <NUM> is mounted on the rear surface of the cover module <NUM>. In more detail, the PCB <NUM> may be mounted on the electrical mounting part <NUM> formed on the rear surface of the cover module <NUM>. The rear surface 50A of the PCB <NUM> may face the inner surface of the back cover <NUM>, and the front surface 50B thereof may be in contact with the protrusion <NUM> formed on the electrical mounting part <NUM>.

The PCB <NUM> may be provided with a number of terminals and devices. In more detail, a plurality of input/output terminals <NUM> may be provided on a side edge of the rear surface 50A of the PCB <NUM>.

A connector (not illustrated) such as a cable or an electric wire may be connected to each input/output terminal <NUM>. Each input/output terminal <NUM> may be inserted into a terminal hole 61A (see <FIG>) formed on the side bracket <NUM> or located at a point corresponding to the terminal hole 61A, and the connector may be connected to the input/output terminal <NUM> through a terminal hole 61A.

The PCB <NUM> may be in contact with the coating layer 20C of the module cover <NUM>. In more detail, the front surface 50B of the PCB <NUM> may be in contact with the coating layer 20C of the module cover <NUM>. Since the insulation resistance of the coating layer is relatively high, the PCB <NUM> may not be grounded or may be poorly grounded even when the PCB <NUM> is in contact with the coating layer C.

In addition, a fixing recess <NUM> is formed in the PCB <NUM>. The fixing recess <NUM> may be formed on the upper edge and the lower edge of the PCB <NUM>, respectively.

However, the position of the fixing recess <NUM> is not limited thereto and may be changed as necessary. In addition, it is also possible to form a fixing hole instead of the fixing recess <NUM>.

The fastening portion <NUM> of the restriction member <NUM> may be positioned in the fixing recess <NUM>. In other words, the fastening portion <NUM> of the restriction member <NUM> may pass through the fixing recess <NUM> and be fastened to the fastening hole <NUM>.

In addition, a fixing piece 62B to be described later may be inserted into the fixing recess <NUM>. The fastening portion <NUM> of the restriction member <NUM> may pass between the inner circumference of the fixing recess <NUM> and the fixing piece 62B and be fastened to the fastening hole <NUM> of the protrusion <NUM>.

Meanwhile, the side bracket <NUM> is connected to the side of the PCB <NUM>. The side bracket <NUM> is restricted to the rear surface of the module cover <NUM> together with the PCB <NUM> by the restriction member <NUM>. In more detail, the side bracket <NUM> may be restricted to the electrical mounting part <NUM>.

The side bracket <NUM> may be long disposed in the vertical direction. The length of the side brackets <NUM> in the vertical direction may be equal to or longer than the length of the PCB <NUM> in the vertical direction.

The side bracket <NUM> may be made of insulating material. The side bracket <NUM> may be an injection mold product.

The side bracket <NUM> includes a bracket body <NUM> on which a terminal hole 61A (see <FIG>) is formed, and a PCB connector <NUM> protruding from the bracket body <NUM>.

The bracket body <NUM> may have a predetermined width in the front and rear direction. At least one terminal hole 61A may be formed through the bracket body <NUM> in the left and right direction.

The PCB connector <NUM> protrudes from the bracket body <NUM>. In more detail, the PCB connector <NUM> may protrude laterally from the upper and lower ends of the bracket body <NUM>.

The PCB connector <NUM> may be in contact with the PCB <NUM> to fix the PCB <NUM>. The PCB connector <NUM> is restricted by the restriction member <NUM>.

In more detail, the PCB connector <NUM> may include a contact portion 62A which is in contact with the PCB <NUM> and a fixing piece 62B connected to the contact portion 62A.

The contact portion 62A may protrude from the bracket body <NUM>. The contact portion 62A may be in contact with the rear surface 50A of the PCB <NUM>.

An open hole <NUM> may be formed in the contact portion 62A. The open hole <NUM> may be passed through the contact portion in the front and rear direction. The head portion <NUM> of the restriction member <NUM> may be located in the open hole <NUM>. The shape of the open hole <NUM> is not limited.

The size of the open hole <NUM> may be larger than the size of the head portion <NUM> of the restriction member <NUM>. Accordingly, the head portion <NUM> is located in the open hole <NUM> and may be in contact with the PCB <NUM>.

The inner circumference of the open hole <NUM> may surround at least a portion of the outer circumference of the head portion <NUM> of the restriction member <NUM>. The outer circumference of the head portion <NUM> and the inner circumference of the opening hole <NUM> may be spaced apart from each other.

The fixing piece 62B may be connected to the contact portion 62A. The fixing piece 62B may protrude from the contact portion 62A and then extend toward the radially inward direction of the opening hole <NUM>.

The fixing piece 62B may be inserted and fitted into the fixing recess <NUM> formed on the PCB <NUM>. Accordingly, the PCB connector <NUM> of the side bracket <NUM> may be firmly connected to the PCB <NUM>.

The fastening portion <NUM> of the restriction member <NUM> may pass between the inner circumference of the fixing recess <NUM> and the fixing piece 62B. In other words, the fixing recess <NUM> may include an inner region through which the fastening portion <NUM> of the restriction member <NUM> passes, and an outer region positioned outside the inner region and into which the fixing piece 62B is inserted. When the restriction member <NUM> is fastened, even if the rotational force of the head portion <NUM> is transmitted to the fixing piece 62B, the fixing piece 62B may not be separated from the fixing recess <NUM>.

The inner region may communicate with the fastening hole <NUM> of the module cover <NUM>. The head portion <NUM> of the restriction member <NUM> may cover the inner region and at least a portion of the fixing piece 62B.

The fixing piece 62B may be fixed between the head portion <NUM> of the restriction member <NUM> and the protrusion <NUM> of the module cover <NUM> in the front and rear direction. Accordingly, the side bracket <NUM> may be restricted in the front and rear direction.

Meanwhile, the restriction member <NUM> restricts the PCB <NUM> and the side bracket <NUM> to the module cover <NUM> and grounds the PCB <NUM> to the module cover <NUM>.

The restriction member <NUM> may be a bolt or screw. The restriction member <NUM> may be made of a metal material and current may be energized to the restriction member.

The restriction member <NUM> includes a head portion <NUM> that is in contact with the PCB <NUM> and restricts the side bracket <NUM>, and a fastening portion <NUM> that extends from the head portion <NUM> and is fastened to the module cover <NUM>.

At least a portion of the head portion <NUM> may be located in an open hole <NUM> formed in the PCB connector <NUM> of the side bracket <NUM>.

The head portion <NUM> is in contact with the PCB <NUM> and may be in contact with the fixing piece 62B. In other words, the head portion <NUM> may include a first region 71A which is in contact with the PCB <NUM>, and a second region 71B which is in contact with the fixing piece 62B. The area of the first region 71A may be wider than the area of the second region 71B.

The fastening portion <NUM> extends forward from the head portion <NUM>. The fastening portion <NUM> may pass through the fixing recess <NUM> of the PCB <NUM> to be fastened to the fastening hole <NUM> of the module cover <NUM>.

Since the fastening hole <NUM> of the module cover <NUM> penetrates to the cover main body 20B, the fastening portion <NUM> is fastened to the fastening hole <NUM> so that the fastening portion <NUM> may be in contact with the cover main body 20B of the module cover <NUM>.

In other words, the head portion <NUM> of the restriction member <NUM> is in contact with the PCB <NUM> and the fastening portion <NUM> may be in contact with the cover main body 20B made of a metal material. Accordingly, the PCB <NUM> can be grounded to the cover main body 20B of the module cover <NUM> through the restriction member <NUM>, and the cover main body 20B can function as a ground. Accordingly, electromagnetic interference (EMI) due to the PCB <NUM> may be reduced.

<FIG> is a perspective view illustrating a side bracket according to an embodiment of the present disclosure, <FIG> is a perspective view illustrating the side bracket illustrated in <FIG> viewed from a different direction, <FIG> is an enlarged view illustrating a periphery of a latch of the side bracket, and <FIG> is an enlarged view illustrating a periphery of a rib of the side bracket.

As described above, the side bracket <NUM> includes a bracket body <NUM> on which a terminal hole 61A is formed, and a PCB connector <NUM> protruding from the bracket body <NUM>.

The side bracket <NUM> may further include a module cover fastening portion <NUM> connected to the bracket body <NUM> and fastened to the module cover <NUM>.

The module cover fastening portion <NUM> may have a shape bent in the bracket body <NUM>. The module cover fastening portion <NUM> may have a predetermined width in the left and right direction.

At least one through-hole is formed on the module cover fastening portion <NUM>, and a fastening member (not illustrated) such as a screw passes through the through-hole to be capable of being fastened to the rear surface of the module cover <NUM>, in more detail, to the electrical mounting part <NUM>.

The module cover fastening portion <NUM> and the PCB connector <NUM> may be located opposite to each other with respect to the bracket body <NUM>.

Meanwhile, the side bracket <NUM> may further include at least one of a latch <NUM> protruding from the bracket body <NUM> and connected to the PCB <NUM> and a rib <NUM> protruding from the bracket body <NUM> and supporting the PCB <NUM>. Hereinafter, a case where the side bracket <NUM> includes both the latch <NUM> and the rib <NUM> will be described as an example.

The latch <NUM> and the rib <NUM> may be located on the opposite side of the module cover fastening portion <NUM> with respect to the bracket body <NUM>. The latch <NUM> and the rib <NUM> may protrude from the bracket body <NUM> in a direction parallel to the PCB connector <NUM>.

The latch <NUM> and the rib <NUM> can temporarily fix the side bracket <NUM> to the PCB <NUM>. The side bracket <NUM> may be restricted to the cover module <NUM> by the restriction member <NUM> in a state of being temporarily fixed to the PCB <NUM> by the latch <NUM> and the rib <NUM>.

The latch <NUM> may be fixed by being caught in a locking hole <NUM> formed through the PCB <NUM> in the front and rear direction. Accordingly, the latch <NUM> may temporarily fix the side bracket <NUM> to the PCB <NUM> in the left and right direction and the vertical direction.

The rib <NUM> may support the PCB <NUM> by being in contact with the PCB <NUM>. The rib <NUM> may guide the PCB <NUM> at the time of connection of the PCB <NUM> and the side bracket <NUM>.

The latch <NUM> and the rib <NUM> may be located opposite to each other with respect to the PCB <NUM>. The latch <NUM> may be connected to any one of the front surface 50B and the rear surface 50A of the PCB <NUM>, and the rib <NUM> may support the other one of the front surface 50B and the rear surface 50A of the PCB <NUM>. For example, the latch <NUM> may be connected to the rear surface 50A of the PCB <NUM>, and the rib may support the front surface 50B of the PCB <NUM>.

Accordingly, the PCB <NUM> can be fixed between the latch <NUM> and the rib <NUM> in the front and rear direction.

<FIG> is a sectional view illustrating a state where a PCB and a side bracket are restricted to a module cover by a restriction member according to another embodiment of the present disclosure.

Hereinafter, contents overlapping with the above-described contents will be omitted, and the differences will be mainly described.

The head portion <NUM>' of the restriction member <NUM>' according to the present embodiment may include a small-diameter portion 71C which is in contact with the PCB <NUM> and a large-diameter portion 71D which has a diameter larger than the small-diameter portion 71C and restricts the side bracket <NUM>.

The fastening portion <NUM> may be formed to extend from the small-diameter portion 71C. In more detail, the large-diameter portion 71D may be formed at the rear of the small-diameter portion 71C, and the fastening portion <NUM> may extend forward from the small-diameter portion 71C.

The small-diameter portion 71C is located in the open hole <NUM> and is in contact with the PCB <NUM>, and the large-diameter portion 71D is located outside the open hole <NUM> and can be in contact with the PCB connector <NUM>'.

The large-diameter portion 71D and the small-diameter portion 71C may be formed to be stepped from each other. However, it is not limited thereto, and, of course, a configuration in which the diameter gradually decreases from the large-diameter portion to the small-diameter portion is also possible.

Accordingly, the PCB connector <NUM>' of the side bracket <NUM> may be restricted between the large-diameter portion 71D and the PCB <NUM> in the front and rear direction.

Therefore, the PCB connector <NUM>' according to the present embodiment can be firmly fastened to the PCB <NUM> without including the fixing piece 62B (see <FIG>), and the fixing hole <NUM>' instead of the fixing recess in the PCB <NUM> can be formed. The fastening portion <NUM> of the restriction member <NUM>' may pass through the fixing hole <NUM>' to be fastened to the fastening hole <NUM> of the cover module <NUM>.

The above description is merely illustrative of the technical idea of the present disclosure, and a person skill in the art to which the present disclosure pertains will be able to make various modifications and variations without departing from the essential characteristics of the present disclosure.

Accordingly, the embodiments disclosed in the present disclosure are not intended to limit the technical idea of the present disclosure, but to explain the technical idea.

Claim 1:
A display device comprising:
a display panel (<NUM>);
a module cover (<NUM>) disposed behind the display panel (<NUM>);
a printed cricuit board, PCB, (<NUM>) mounted on a rear surface of the module cover (<NUM>) ;
a side bracket (<NUM>) connected to a side of the PCB (<NUM>) and restricted by the rear surface of the module cover (<NUM>); and
a restriction member (<NUM>, <NUM>') restricting the PCB (<NUM>) and the side bracket (<NUM>) to the module cover (<NUM>) and grounding the PCB (<NUM>) to the module cover (<NUM>),
wherein the restriction member (<NUM>, <NUM>') includes
a head portion (<NUM>, <NUM>') which is in contact with the PCB (<NUM>) and restricts the side bracket (<NUM>); and
a fastening portion (<NUM>) extending from the head portion (<NUM>, <NUM>') and fastened to the module cover (<NUM>);
wherein a fixing recess (<NUM>) in which a portion of the fastening portion (<NUM>) is located is formed in the PCB (<NUM>); and
wherein the side bracket (<NUM>) includes
a bracket body (<NUM>) having a terminal hole (61A) corresponding to a terminal provided in the PCB (<NUM>); and
a PCB connector (<NUM>) protruding from the bracket body (<NUM>) and restricted by the head portion (<NUM>, <NUM>').