KR102648611B1 - Display device having jointing auxiliary member - Google Patents

Abstract

A display device according to an embodiment of the present invention includes a plurality of first regions where a plurality of flexible printed circuit boards are disposed and a plurality of second regions where the flexible printed circuit boards are not disposed between the plurality of first regions. a panel, a plurality of driving circuit chips disposed in each of the plurality of first regions and supplying control signals to display images on the display panel, and a device disposed in each of the plurality of second regions and adjusting the height of the plurality of second regions. Includes a plurality of joining auxiliary members. In this way, the display device according to an embodiment of the present invention can minimize the height difference with the element disposed in the first region by disposing the joining auxiliary member in the second region where the flexible circuit board is not disposed, It can reduce the Ulibuli phenomenon, which causes the exterior surface to become uneven.

Description

Display device having a joining auxiliary member {DISPLAY DEVICE HAVING JOINTING AUXILIARY MEMBER}

Embodiments of the present invention relate to a display device, and more specifically, to a display device having a joining auxiliary member that can improve the appearance quality of the display device.

Recently, as we entered the information age, the field of displays that visually display electrical information signals has developed rapidly, and in response to this, various display devices with excellent performance in thinner, lighter, and lower power consumption have been developed. It is becoming. Examples of such display devices include Liquid Crystal Display device (LCD), Field Emission Display device (FED), Electro-Wetting Display device (EWD), and organic light emitting display device. (Organic Light Emitting Display Device; OLED), etc.

Such display devices include a display panel in which a plurality of light-emitting elements are arranged to display an image, a back cover to accommodate the display panel, and a printed circuit board electrically connected to the display panel. At this time, the printed circuit board is electrically connected to the display panel through a flexible printed circuit (FPC) that is electrically connected to an element of the display panel, for example, a pad.

The flexible circuit board is arranged to correspond to a plurality of pads disposed on one side edge of the display panel. In this way, a plurality of flexible circuit boards are arranged at regular intervals from the side edge of the display panel to correspond to a plurality of pads. Accordingly, a spaced area exists between one flexible printed circuit board and another flexible printed circuit board disposed adjacent to the one flexible printed circuit board. An adhesive layer for adhesion to a back cover for storing the display panel is disposed in this spaced area.

However, a height difference occurs between the area where the flexible printed circuit board is placed and the spaced area between the flexible printed circuit boards due to the elements placed in the area where the flexible printed circuit board is placed.

Accordingly, an uneven phenomenon occurs in which not only the exterior of the display panel but also the exterior surface of the back cover attached to the display panel becomes uneven.

The problem to be solved by the present invention is to provide a display device having a bonding auxiliary member that can minimize the Uulibulli phenomenon occurring on the surface of the display device.

The problem to be solved by the present invention is to provide a display device that can minimize the width of the bezel area.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

In order to solve the above-described problem, a display device according to an embodiment of the present invention is disposed between a plurality of first regions where a plurality of flexible circuit boards are disposed, and the flexible circuit boards are disposed. A display panel having a plurality of second regions, disposed in each of the plurality of first regions, a plurality of driving circuit chips that supply control signals to display images on the display panel, and disposed in each of the plurality of second regions, It includes a plurality of joining auxiliary members that adjust the height of the plurality of second regions. Therefore, the display device according to an embodiment of the present invention can minimize the height difference with the element disposed in the first region by disposing the joining auxiliary member in the second region where the flexible circuit board is not disposed, thereby minimizing the appearance of the display device. The Ulibuli phenomenon, which causes the surface to become uneven, can be minimized.

The present invention minimizes the height difference with the area where the flexible circuit board is placed by disposing a joining auxiliary member that performs a relaxation and contraction operation in an area where the flexible circuit board is not placed, thereby reducing the noise generated on the exterior surface of the display device. This may deteriorate the phenomenon.

The present invention can reduce the bezel width of a display device by placing the flexible circuit board on the display panel without bending it.

The effects according to the present invention are not limited to the details exemplified above, and further various effects are included within the present invention.

1 is a schematic exploded perspective view of a display device according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view schematically illustrating a display area of a display device according to an embodiment of the present invention.
FIG. 3 is a schematic cross-sectional view illustrating a film area of a display device according to an embodiment of the present invention.
FIG. 4 is a schematic cross-sectional view illustrating a non-film area of a display device according to an embodiment of the present invention.
Figure 5a is a perspective view schematically showing a joining auxiliary member according to an embodiment of the present invention.
Figure 5b is a perspective view schematically showing a joining auxiliary member according to another embodiment of the present invention.
Figure 6a is a cross-sectional view schematically showing a joining auxiliary member according to an embodiment of the present invention.
Figure 6b is a cross-sectional view schematically showing a joining auxiliary member according to another embodiment of the present invention.
Figures 7a to 7c are perspective views for explaining an example of the shape of the elastic driving part of the joining auxiliary member according to an embodiment of the present invention.
Figure 8a is a schematic cross-sectional view for explaining the loosening operation of the joining auxiliary member according to an embodiment of the present invention.
Figure 8b is a schematic cross-sectional view for explaining the contraction operation of the joining auxiliary member according to an embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and will be implemented in various different forms. The present embodiments only serve to ensure that the disclosure of the present invention is complete and that common knowledge in the technical field to which the present invention pertains is not limited. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining embodiments of the present invention are illustrative, and the present invention is not limited to the matters shown. Like reference numerals refer to like elements throughout the specification. Additionally, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. When 'includes', 'has', 'consists of', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the plural is included unless specifically stated otherwise.

When interpreting a component, it is interpreted to include the margin of error even if there is no separate explicit description.

In the case of a description of a positional relationship, for example, if the positional relationship of two parts is described as 'on top', 'on the top', 'on the bottom', 'next to', etc., 'immediately' Alternatively, there may be one or more other parts placed between the two parts, unless 'directly' is used.

When an element or layer is referred to as “on” another element or layer, it includes instances where the other layer or other element is directly on top of or interposed between the other elements.

Although first, second, etc. are used to describe various elements, these elements are not limited by these terms. These terms are merely used to distinguish one component from another. Accordingly, the first component mentioned below may also be the second component within the technical spirit of the present invention.

Like reference numerals refer to like elements throughout the specification.

The size and thickness of each component shown in the drawings are shown for convenience of explanation, and the present invention is not necessarily limited to the size and thickness of the components shown.

Each feature of the various embodiments of the present invention can be partially or fully combined or combined with each other, and as can be fully understood by those skilled in the art, various technical interconnections and operations are possible, and each embodiment may be implemented independently of each other. It may be possible to conduct them together due to a related relationship.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings.

1 is a schematic exploded perspective view of a display device according to an embodiment of the present invention.

Referring to FIG. 1, a display device 100 according to an embodiment of the present invention includes a display panel 110, a flexible printed circuit board 120, a printed circuit board 130, a joining auxiliary member 140, and a back cover ( 150).

The display panel 110 includes a first substrate 111 and a second substrate 112 disposed to face the first substrate 111 . A light emitting device is disposed between the first substrate 111 and the second substrate 112.

The display panel 110 includes a display area (A/A) where an image is displayed and a non-display area (N/A) arranged to surround the display area (A/A).

A plurality of gate wires (not shown) and a plurality of data wires (not shown) are disposed in the display area (A/A) of the display panel 110, and the gate signal is transmitted through the plurality of gate wires and the plurality of data wires. and a plurality of pixels (P) that display an image by a data signal.

In the non-display area (N/A) of the display panel 110, a gate driving circuit (not shown) that applies a gate signal to the gate wire placed in the display area (A/A) is placed in the display area (A/A). A data driving circuit (not shown) that applies a data signal to the data wire is disposed.

The gate driving circuit is connected to the bonding pad of the display panel 110 using a tape automated bonding (TAB) method, a chip on glass (COG), or a chip on film (COF) method, or is connected to the bonding pad of the display panel 110. It can be implemented in a GIP (Gate In Panel) method formed directly at (110).

The data driving circuit may be integrated and placed as a driving circuit chip 121 on the base film of the flexible printed circuit board 120. That is, the data driving circuit can be arranged in a chip-on-film (COF) method. However, in one embodiment of the present invention, the data driving circuit has been described as being arranged in a chip-on-film method, but it is not limited thereto, and can be arranged in a tape automated bonding (TAB) method or a chip-on-glass (COG) method. It may be deployed.

A flexible printed circuit (FPC) 120 transmits signals input from the printed circuit board 130 to the display panel 110. That is, the flexible circuit board 120 is disposed between the display panel 110 and the printed circuit board 130 and electrically connects the display panel 110 and the printed circuit board 130. A plurality of flexible circuit boards 120 are arranged to correspond to a plurality of bonding pads disposed at one edge of the non-display area (N/A) of the display panel 110.

Each of the plurality of flexible circuit boards 120 is arranged to be spaced apart at a certain distance. In this way, the area of the display panel 110 where the flexible printed circuit board 120 is disposed can be referred to as the first area, that is, the film area (FA), and the spaced area between the flexible printed circuit boards 120, that is, the film area (FA) ) and the adjacent film area (FA) of the display panel 110 where the flexible printed circuit board 120 is not disposed may be referred to as a second area, that is, a non-film area (NFA). In particular, since the non-film area (NFA) is an area in which no driving elements are disposed, elements disposed in the film area (FA), such as the driving circuit chip 122, cause the first and second regions to A height difference may occur, and due to this height difference, the appearance of the display panel 110 and the appearance of the back cover 150 bonded to the display panel 110 may become uneven. In this way, if the uneven appearance of the display panel 110 or the back cover 150 occurs, the design quality of the display device may deteriorate.

Accordingly, the display device 100 according to an embodiment of the present invention has a second area, that is, a non-film area (NFA), to minimize the phenomenon of the appearance of the display panel 110 or the back cover 150 becoming uneven. It includes a joining auxiliary member 140 disposed in. This joining auxiliary member 140 may be disposed in the film area FA to correspond to the area where the driving circuit chip included in the flexible printed circuit board 120 is located. Accordingly, as will be described later, the joining auxiliary member 140 is disposed on the back of the display panel 110 on which the driving circuit chip or printed circuit board 130 is disposed, and more specifically, on the back of the second substrate 112. The joining auxiliary member 140 disposed in the non-film area (NFA) acts like a spring and can be adjusted to minimize the height difference with the element disposed in the film area (FA). A detailed description of this joining auxiliary member 140 will be described with reference to FIGS. 5A to 8B below.

The printed circuit board 130 is disposed between the display panel 110 and the back cover 150. In more detail, the printed circuit board 130 is disposed on the rear surface of the second substrate 112 of the display panel 110. The printed circuit board 130 includes a gate driving circuit of the display panel 110 and a data driving circuit disposed on the flexible circuit board 120, that is, a timing controller for controlling the driving of the driving circuit chip. The timing controller generates a gate control signal, a data control signal, and a power signal and outputs them to the flexible circuit board 120.

A back cover (150) is disposed on the back of the second substrate 112 on which the printed circuit board 130 is disposed. The back cover 150 may be bonded to the second substrate 112 using an adhesive material. At this time, the adhesive material may be disposed in the non-film area (NFA) of the display panel 110 and may be, for example, either a double-sided tape or an adhesive that can be adhered by bonding.

The display panel 110 according to an embodiment of the present invention is an organic light emitting display panel, a liquid crystal display panel, a field emission display panel, and an electric display panel. It may be any one of various display panels such as an electro-wetting display panel. Hereinafter, the display panel 110 according to an embodiment of the present invention will be described taking as an example an organic light emitting display panel.

FIG. 2 is a schematic cross-sectional view schematically illustrating a display area of a display device according to an embodiment of the present invention. FIG. 3 is a schematic cross-sectional view illustrating a film area of a display device according to an embodiment of the present invention. FIG. 4 is a schematic cross-sectional view illustrating a non-film area of a display device according to an embodiment of the present invention.

Referring to FIG. 2, a display device 100 according to an embodiment of the present invention includes a display panel 110 and a back cover 150 coupled to the display panel 110.

The display panel 110 includes a first substrate 111, an organic light emitting element 101, a protective layer 102, an adhesive layer 103, and a second substrate 112.

The first substrate 111 may be made of a transparent rigid material such as glass, or may be made of a transparent flexible material. Organic light emitting devices 101 formed for each unit pixel are disposed in the display area A/A of the first substrate 111. Although not shown, a switch transistor, a driving transistor, and at least one capacitor for driving the organic light emitting device 101 are disposed between the first substrate 111 and the organic light emitting device 101.

The organic light emitting device 101 includes a first electrode that receives current from a driving transistor (not shown) arranged for each unit pixel, a second electrode corresponding to the first electrode, and a light emitting layer disposed between the first electrode and the second electrode. Includes. The first electrode may be made of a transparent electrode material, the second electrode may be made of a metal material, and the light emitting layer may be made of an organic material. The organic light-emitting device 101 injects holes into the light-emitting layer from the first electrode and injects electrons into the light-emitting layer from the second electrode, so that holes and electrons combine in the light-emitting layer, and this combination causes excitons ( It emits light when an exciton is formed.

A protective layer 102 is disposed on the top and side surfaces of the organic light emitting device 101 to protect the organic light emitting device 101, and a first substrate 111 and a second substrate 112 are placed on the top and side surfaces of the organic light emitting device 102. ) An adhesive layer 103 for adhering is disposed. At this time, the adhesive layer 103 may include a moisture adsorbent that absorbs moisture to protect the organic light emitting device 101 from moisture.

A second substrate 112 facing the first substrate 111 is disposed on the adhesive layer 103. The second substrate 112 is an encapsulation plate and may be made of, for example, one of glass, metal foil, and plastic film. Here, the encapsulation plate is also called an encapsulation substrate. A back cover (Back Cover, 150) is disposed on this second substrate 112.

The back cover 150 is for accommodating the display panel 110 and can be attached to the back of the second substrate 112 using an adhesive layer.

Meanwhile, the display device 100 according to an embodiment of the present invention has been described as having a structure in which the organic light-emitting device 101 is encapsulated by a protective layer 102 and an adhesive layer 103, but the display device 100 is not limited to this, and the first substrate It may have an encapsulation structure in which an adhesive such as a sealant is applied to the outside of the 111 and the second substrate 112.

Referring to Figures 3 and 4, a film area (FA) and a non-film area (NFA) are disposed on one side of the display panel 110 of the present invention. The film area (FA) is an area where the flexible printed circuit board 120 is disposed, and the non-film area (NFA) is a spaced area between the flexible printed circuit board 120 and the flexible printed circuit board 120, that is, the flexible printed circuit board 120 This is an area that is not placed. A bonding pad 104, a flexible printed circuit board 120, a printed circuit board 130, and a joining auxiliary member 140 are disposed in the film area (FA) and the non-film area (NFA) of the display panel 110.

The bonding pad 104 is disposed in the film area (FA) of the display panel 110, and more specifically, at one edge of the first substrate 111 in the non-display area (N/A) of the display panel 110. Multiple dogs are deployed. Here, at one edge of the display panel 110, the first substrate 111 generally has a larger area than the second substrate 112, and accordingly, the first substrate 111 overlaps the second substrate 112. There is an area that does not overlap, and the edge refers to the outermost area among the non-overlapping areas. The bonding pad 104 is electrically connected to the data wire or gate wire disposed in the display area A/A, and is electrically connected to the flexible printed circuit board 120. Accordingly, the display panel 110 can receive the signal output from the flexible circuit board 120 and the signal output from the printed circuit board 130 through the bonding pad 104.

As shown in FIG. 3, the flexible circuit board 120 may include a base film 121 and a driving circuit chip 122.

The base film 121 may be formed of polyimide resin, epoxy resin, or other known materials, and may have flexibility.

The driving circuit chip 122 outputs a control signal that can control the driving of the gate wire or data wire to the display panel 110.

A buffer member 105 that can act as a buffer may be disposed between the driving circuit chip 122 and the display panel 110.

The flexible circuit board 120 transmits data signals or control signals input from the printed circuit board 130 to the display panel 110. That is, the flexible circuit board 120 is disposed between the display panel 110 and the printed circuit board 130 and electrically connects the display panel 110 and the printed circuit board 130. More specifically, the flexible circuit board 120 is formed by, for example, attaching an anisotropic conductive film, which is a thermosetting resin film containing small conductive particles, to one edge of the display panel 110 and the printed circuit board 130 and then heat-pressing it. Thus, it can be electrically connected to the display panel 110 and the printed circuit board 130.

The base film 121 of the flexible printed circuit board 120 has a first side and a second side disposed on the back of the first side. One side of the first side of the flexible printed circuit board 120 is connected to the bonding pad 104 disposed on the front of the first substrate 111, and the other side of the first side is connected to the second substrate 112 of the display panel 110. ) is connected to the printed circuit board 130 disposed on the back of the. In this way, the flexible circuit board 120 according to an embodiment of the present invention is different from the prior art in that the area where the first substrate 111 does not overlap the second substrate 112 is separated from the first substrate 111 without being bent. It is disposed on a partial area of the rear surface of the second substrate 112. Accordingly, in the display device 100 according to an embodiment of the present invention, the flexible printed circuit board 120 is connected to the bonding pad 104 and the printed circuit board 130 in a reverse direction different from the conventional one, thereby forming the flexible printed circuit board 120. ) does not need to be bent, so damage to the flexible circuit board 120 can be prevented and the width of the bezel area of the display device 100 can be reduced.

The printed circuit board 130 may be disposed on the back of the second substrate 112 disposed opposite to the first substrate 111. A back cover 150 is disposed on the back of the second substrate 112 on which the printed circuit board 130 is disposed, and the printed circuit board 130 and the back cover 150 are covered with an adhesive layer 135, for example, double-sided tape. Alternatively, it may be bonded by an adhesive that can be bonded by bonding.

Meanwhile, as shown in FIG. 4, a bonding auxiliary member 140 is disposed in the non-film area (NFA) of the display panel 110. In more detail, the joining auxiliary member 140 may be disposed on the rear surface of the second substrate 112 in the non-film area (NFA).

In a typical display device, a flexible circuit board is placed in the film area (FA), and a double-sided tape for adhesion to the back cover 150 is placed in the non-film area (NFA). However, while the film area (FA) has a height due to the driving circuit chip attached to the flexible printed circuit board, the non-film area (NFA) has only double-sided tape attached, so it is not affected by elements such as the driving circuit chip attached to the flexible printed circuit board. Therefore, there was bound to be a height difference between the film area (FA) and the non-film area (NFA). The height difference between the film area (FA) and the non-film area (NFA) of the display device has caused a problem that deteriorates the aesthetics of the display device. Accordingly, in the present invention, the joining auxiliary member 140 is disposed in the non-film area (NFA) to minimize the height difference between the height of the film area (FA) and the non-film area (NFA).

Accordingly, the joining auxiliary member 140 includes an elastic driving unit and can adjust the height of the non-film area (NFA) so that there is no height difference between the elements disposed in the film area (FA), for example, the driving circuit chip. One side of the joining auxiliary member 140 is adhered to the first adhesive layer 145a bonded to the back cover 150, and the other side of the bonding auxiliary member 140 is adhered to the second adhesive layer 145a bonded to the back surface of the second substrate 112. It can be fixed by adhering to (145b). Here, the first adhesive layer 145a and the second adhesive layer 145b may be made of any one of double-sided tape or an adhesive other than double-sided tape. This joining auxiliary member 140 will be examined in more detail with reference to FIGS. 5A to 8B below.

Figure 5a is a perspective view schematically showing a joining auxiliary member according to an embodiment of the present invention. Figure 5b is a perspective view schematically showing a joining auxiliary member according to another embodiment of the present invention. Figure 6a is a cross-sectional view schematically showing a joining auxiliary member according to an embodiment of the present invention. Figure 6b is a cross-sectional view schematically showing a joining auxiliary member according to another embodiment of the present invention. Figures 7a to 7c are perspective views for explaining an example of the shape of the elastic driving part of the joining auxiliary member according to an embodiment of the present invention. Figure 8a is a schematic cross-sectional view for explaining the loosening operation of the joining auxiliary member according to an embodiment of the present invention. Figure 8b is a schematic cross-sectional view for explaining the contraction operation of the joining auxiliary member according to an embodiment of the present invention.

5A to 6B, the bonding auxiliary member 140 according to an embodiment of the present invention is disposed between the second substrate 112 and the back cover 150 of the display panel 110 and has a first adhesive layer 145a. ) and is fixed by the second adhesive layer 145b.

The joining auxiliary member 140 includes a first auxiliary member 141 and a second auxiliary member 142, and is formed by combining the first auxiliary member 141 and the second auxiliary member 142.

The first auxiliary member 141 and the second auxiliary member 142 have the same structure, and the first auxiliary member 141 and the second auxiliary member 142 are disposed to face each other. The first auxiliary member 141 and the second auxiliary member 142 may be bonded and joined using an adhesive material.

Each of the first auxiliary member 141 and the second auxiliary member 142 is formed of a thin metal plate with elasticity, and is made of, for example, any one of stainless steel, aluminum, aluminum alloy, nickel alloy, and copper alloy. You can.

First, looking at the joining auxiliary member 140 according to an embodiment of the present invention with reference to FIGS. 5A and 6A, the first auxiliary member 141 includes a first base portion 1411 and a first elastic drive portion 1412. ), a first junction 1413, a first flow stopper 1414, and a second flow stopper 1415.

The first base portion 1411 is a flat surface that is attached to the first adhesive layer 145a for adhesion to the back cover 150. Accordingly, the first auxiliary member 141 may be fixed to the back cover 150 by the first adhesive layer 145a.

The first elastic driving unit 1412 functions to contract or relax, that is, acts as a kind of spring, and can adjust the height between the second substrate 112 and the back cover 150. The first elastic driving unit 1412 may be formed to have a first inclination angle θ1 from the central area of the first base unit 1411. More specifically, as shown in FIGS. 7A and 7B, the first elastic drive unit 1412 is configured to include a bending shape capable of relaxing or contracting by bending upward or downward from the base portion 1411. You can. For example, as shown in FIG. 7A, the first elastic drive unit 1412 may be formed in a structure with a plurality of steps in the upper or lower direction to perform contraction and relaxation operations, and FIG. 7B As shown, the first elastic driving unit 1412 may be formed in a curling shape to contract and relax. However, the shape of the first elastic driving unit 1412 is not limited to a stepped or curled structure, and may be formed to have an omega (Ω) shape as shown in FIG. 7C.

The first joint portion 1413 extends from the first elastic driving portion 1412 and is in balance with the first base portion 1411. The first joint 1413 is bonded to the second joint of the second auxiliary member 142 using an adhesive material to couple the first auxiliary member 141 and the second auxiliary member 142.

The first flow stopper 1414 and the second flow stopper 1415 are respectively combined with the third flow stopper and the fourth flow stopper disposed on the second auxiliary member 142 to form the first auxiliary member 141 and the second auxiliary member. It serves to limit height adjustment during contraction and relaxation between members 142. Each of the first flow stopper 1414 and the second flow stopper 1415 is disposed on both sides of the central area of the first base portion 1411. Each of the first flow stopper 1414 and the second flow stopper 1415 is formed to have a bent shape while forming a right angle in the upward or downward direction from the first base portion 1411. That is, each of the first flow stopper 1414 and the second flow stopper 1415 may extend from the first base portion 1411 and be formed to have an 'ㄴ' or 'ㄱ' shape.

The direction in which each of the first flow stopper 1414 and the second flow stopper 1415 extends from the first base part 1411 may be the same as the direction in which the first elastic driving part 1412 extends. That is, if the first flow stopper 1414 and the second flow stopper 1415 extend in the lower direction of the first base part 1411, the first elastic driving part 1412 also extends in the lower direction of the first base part 1411. It may be extended.

The second auxiliary member 142 is also formed of a thin metal plate and includes a second base portion 1421, a second elastic driving portion 1422, a second joint portion 1423, a third flow stopper 1424, and a fourth flow stopper ( 1425).

The second base portion 1421 is a flat surface and is attached to the second adhesive layer 145b for adhesion to the second substrate 112 of the display panel 110. Accordingly, the second auxiliary member 142 is fixed to the second substrate 112 by the second adhesive layer 145b.

The second elastic driving unit 1422 functions to contract or relax, that is, acts as a kind of spring, and can adjust the height between the second substrate 112 and the back cover 150. The second elastic driving unit 1422 is formed to have a first inclination angle from the central area of the second base unit 1421. As shown in FIGS. 7A and 7B, the second elastic drive unit 1422 may be configured to include a bending shape that can be bent upward or downward from the second base unit 1421 to relax or contract. there is. For example, the second elastic drive unit 1422 may be formed in a structure with a plurality of steps in the upper or lower direction to perform a contraction or relaxation operation, as shown in FIG. 7A, and as shown in FIG. 7B. As shown, the first elastic driving unit 1412 may be formed in a curling shape to contract and relax. However, the shape of the second elastic driving unit 1422 is not limited to a stepped or curled structure, and may be formed to have an omega (Ω) shape as shown in FIG. 7C. However, since the second auxiliary member 142 is arranged to be coupled to the first auxiliary member 141, in the case of the second elastic driving unit 1422, for example, the first elastic driving unit 1412 of the first auxiliary member 141 If is formed to form a diagonal line downward from the first base portion 1411, the second elastic driving unit 1422 may be formed to form a diagonal line upward from the second base portion 1421.

The second joint portion 1423 extends from the second elastic driving portion 1422 and is in balance with the second base portion 1421. The second joint 1423 is bonded to the first joint 1413 of the first auxiliary member 141 using an adhesive material to couple the first auxiliary member 141 and the second auxiliary member 142. At this time, the second joint 1423 is disposed below the first joint 1413.

The third flow stopper 1424 and the fourth flow stopper 1425 are respectively combined with the first flow stopper 1414 and the second flow stopper 1415 disposed on the first auxiliary member 141 to form the first auxiliary member ( It serves to limit height adjustment during contraction and relaxation between the 141) and the second auxiliary member 142. Each of the third flow stopper 1424 and the fourth flow stopper 1425 is disposed on both sides of the central area of the second base portion 1421. Each of the third flow stopper 1424 and the fourth flow stopper 1425 is formed to have a bent shape while forming a right angle in the upward or downward direction from the second base portion 1421. That is, each of the first flow stopper 1414 and the second flow stopper 1415 may extend from the base portion 1411 and be formed to have an 'ㄴ' or 'ㄱ' shape.

The third flow stopper 1424 is disposed oppositely to be coupled to the first flow stopper 1414, and the fourth flow stopper 1425 is disposed to face to be coupled to the second flow stopper 1415. In other words, the third flow stopper 1424 and the fourth flow stopper 1425 are formed so that the first flow stopper 1414 and the second flow stopper 1415 of the first auxiliary member 141 form a right angle in the downward direction. If so, on the contrary, it can be formed to form a right angle in the upper direction. Accordingly, when the first auxiliary member 141 and the second auxiliary member 142 are combined, the third flow stopper 1424 is disposed on the first flow stopper 1414, and the fourth flow stopper 1425 is 2 may be placed on the flow stopper 1415.

Meanwhile, referring to FIG. 6A, the first auxiliary member 141 and the second auxiliary member 142 may be combined to form a second gap (Gap, G2). The second gap G2 is formed by the first gap G1, which is the gap between the first flow stopper 1414 and the third flow stopper 1424 and the second flow stopper 1415 and the fourth flow stopper 1425. It can be adjusted. In other words, the first auxiliary member 141 and the second auxiliary member 142 constituting the joining auxiliary member 140 according to an embodiment of the present invention include a first elastic drive unit 1412 and a second elastic drive unit 1422. The first gap G1 may be adjusted by the contraction or relaxation operation. At this time, the first gap G1, which is the gap between the first flow stopper 1414 and the third flow stopper 1424 and the second flow stopper 1415 and the fourth flow stopper 1425, is the gap of the back cover 150. It can be set considering the side height. In more detail, the first auxiliary member 141 and the second auxiliary member 142 have a height of the display panel 110 greater than the side height of the back cover 150 when the second gap G2 is widened by the relaxation operation. can be set not to increase. Considering this, the first gap G1 caused by the relaxation or contraction of the first elastic drive unit 1412 and the second elastic drive unit 1422 may have a range of, for example, 0.1 mm or more and 0.5 mm or less.

On the other hand, the joining auxiliary member 140' according to another embodiment of the present invention, as shown in FIGS. 5B and 6B, includes the first joining portion 1413 of the first auxiliary member 141 and the second auxiliary member 142. ), the second joint 1423 may be disposed on top of the first joint 1413, unlike in the case of one embodiment.

The operation of the joining auxiliary member according to an embodiment of the present invention will be examined in more detail with reference to FIGS. 8A and 8B.

First, referring to FIG. 8A, when the height of the device disposed in the film area (FA) of the display panel 110 is high, the joining auxiliary member 140 is designed to minimize the height difference with the device disposed in the film area (FA). Do relaxation movements. Accordingly, the second gap G2', which is the gap between the first auxiliary member 141 and the second auxiliary member 142 forming the joining auxiliary member 140, is formed by the first elastic drive unit 1412 and the second elastic drive unit. The gap can be widened by the relaxation operation of (1422). Due to this relaxation operation, the second inclination angle ( θ2) may be a value greater than the first inclination angle θ1.

In addition, the gap between the first flow stopper 1414 of the first auxiliary member 141 and the third flow stopper 1424 of the second auxiliary member 142 and the second flow stopper 1415 of the first auxiliary member 141 ) and the first gap G1', which is the gap between the fourth flow stopper 1425 of the second auxiliary member 142, can be narrowed.

Meanwhile, referring to FIG. 8B, when the height of the device disposed in the film area FA of the display panel 110 is low, the first auxiliary member 141 and the second auxiliary member 142 forming the joining auxiliary member 140 ) The second gap G2'', which is the gap between the first and second elastic drivers 1412 and 1422, may become narrower by the contraction operation of the first and second elastic drivers 1412 and 1422. Due to this contraction operation, the third inclination angle ( θ3) may be a value smaller than the first inclination angle θ1. In addition, the gap between the first flow stopper 1414 of the first auxiliary member 141 and the third flow stopper 1424 of the second auxiliary member 142 and the second flow stopper 1415 of the first auxiliary member 141 ) and the first gap G1'', which is the gap between the fourth flow stopper 1425 of the second auxiliary member 142, may be wider. As a result of examining FIGS. 8A and 8B , it can be seen that the first gap G1 and the second gap G2 have an inversely proportional relationship.

In this way, the bonding auxiliary member 140 according to an embodiment of the present invention is disposed in the non-film area (NFA) of the display panel 110 and adjusted to minimize the height difference with the element disposed in the film area (FA). It is possible to minimize the appearance of an uneven appearance occurring on the surface of the display panel 110 or the back cover 150.

A display device having a joining auxiliary member according to various embodiments of the present invention can be described as follows.

A display device according to an embodiment of the present invention has a plurality of first regions where a plurality of flexible circuit boards are disposed and a plurality of second regions disposed between the plurality of first regions and where the flexible circuit boards are not disposed. A display panel, a plurality of driving circuit chips disposed in each of the plurality of first regions and supplying control signals to display images on the display panel, and disposed in each of the plurality of second regions, and adjusting the height of the plurality of second regions. It may include a plurality of joining auxiliary members.

According to another feature of the present invention, the display device may further include a back cover that accommodates the display panel, and a plurality of joining auxiliary members may be disposed between the display panel and the back cover.

According to another feature of the present invention, each of the plurality of joining auxiliary members may be made of a metal material having elasticity.

According to another feature of the present invention, each of the plurality of joining auxiliary members may include a first auxiliary member and a second auxiliary member coupled to face the first auxiliary member.

According to another feature of the present invention, the first auxiliary member is fixed to the back cover by a first adhesive layer made of either a double-sided tape or a bonding adhesive, and the second auxiliary member is made of either a double-sided tape or a bonding adhesive. It may be fixed to the display panel by a second adhesive layer.

According to another feature of the present invention, the first auxiliary member and the second auxiliary member each include a base portion, an elastic driving portion formed in the central area of the base portion and disposed to form a first inclination angle in a diagonal direction from the base portion, and extending from the elastic driving portion. It may include a junction disposed parallel to the base portion, and a flow stopper disposed on both sides of the central region of the base portion and extending in a direction perpendicular to the base portion and having a bent shape.

According to another feature of the present invention, the elastic driving unit provided in each of the first auxiliary member and the second auxiliary member can perform a relaxation operation and a contraction operation.

According to another feature of the present invention, the inclination angle of the elastic drive unit during the relaxation operation may have a value greater than the first inclination angle.

According to another feature of the present invention, the inclination angle of the elastic drive unit during the contraction operation may have a value smaller than the first inclination angle.

According to another feature of the present invention, the first auxiliary member and the second auxiliary member may be joined by bonding the joints disposed on each of them with an adhesive.

According to another feature of the present invention, the distance between the flow stopper provided on the first auxiliary member and the flow stopper provided on the second auxiliary member may be set in consideration of the height of the side surface of the back cover.

According to another feature of the present invention, when the elastic drive unit relaxes, a space is provided between the flow stopper provided in the first auxiliary member and the flow stopper provided in the second auxiliary member to prevent the display panel from protruding outward from the side of the back cover. Intervals can be set.

According to another feature of the present invention, the gap between the base portion of the first auxiliary member and the base portion of the second auxiliary member and the gap between the flow stopper of the first auxiliary member and the flow stopper of the second auxiliary member are inversely proportional to each other. You can have it.

According to another feature of the present invention, the display panel may include a first substrate including a light emitting element disposed in a display area and a bonding pad disposed in a non-display area, and a second substrate disposed opposite to the first substrate. there is.

According to another feature of the present invention, the display device may further include a printed circuit board disposed on the back of the second substrate and transmitting a driving control signal for controlling the operation of the light emitting device to the flexible printed circuit board.

According to another feature of the present invention, one side of the flexible printed circuit board disposed in the first area is electrically connected to the bonding pad disposed on the first substrate, and the other side of the flexible printed circuit board is connected to the printed circuit board on the back of the second substrate. The flexible circuit board can electrically connect the bonding pad and the printed circuit board using a reverse bonding method.

According to another feature of the present invention, the joining auxiliary member may be disposed on the rear surface of the second substrate.

Although embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and various modifications may be made without departing from the technical spirit of the present invention. . Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are for illustrative purposes, and the scope of the technical idea of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of protection of the present invention should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be construed as being included in the scope of rights of the present invention.

100: display device
110: display panel
111: first substrate
112: second substrate
120: Flexible circuit board
130: printed circuit board
140: Joint auxiliary member
141: First auxiliary member
1411: first base part
1412: first elastic driving unit
1413: first joint
1414: First flow stopper
1415: Second flow stopper
142: Second auxiliary member
1421: second base part
1422: second elastic driving unit
1423: second joint
1424: Third flow stopper
1425: Fourth flow stopper
A/A: Display area
N/A: Non-display area
FA: film area
NFA: Non-film area

Claims (17)

a display panel having a plurality of first regions where a plurality of flexible printed circuit boards are disposed and a plurality of second regions where the flexible printed circuit boards are not disposed between the plurality of first regions;
a plurality of driving circuit chips disposed in each of the plurality of first areas and supplying control signals to display an image on the display panel;
a plurality of joining auxiliary members disposed in each of the plurality of second regions and adjusting the height of the plurality of second regions; and
Includes a back cover for storing the display panel,
The plurality of joining auxiliary members are disposed between the display panel and the back cover,
The plurality of joining auxiliary members,
a first auxiliary member; and
It includes a second auxiliary member coupled to face the first auxiliary member,
Each of the first auxiliary member and the second auxiliary member,
base part;
an elastic drive unit that performs a contraction or relaxation operation and adjusts the height of the plurality of second regions;
a flow stopper that limits height adjustment of the plurality of second regions when the elastic drive unit contracts or relaxes; and
A joint extending from the elastic driving portion and disposed parallel to the base portion,
The elastic driving part is formed in the central area of the base part and is arranged to form a first inclination angle in a diagonal direction from the base part,
The flow stopper is disposed in areas on both sides of the central area of the base, and extends in a right angle direction from the base to have a bent shape. According to paragraph 1,
A display device, wherein each of the plurality of joining auxiliary members is made of a metal material having elasticity. delete delete According to paragraph 1,
The first auxiliary member is fixed to the back cover by a first adhesive layer, and the second auxiliary member is fixed to the display panel by a second adhesive layer,
The first adhesive layer and the second adhesive layer are made of either a double-sided tape or an adhesive. delete delete According to paragraph 1,
A display device wherein an inclination angle of the elastic driving unit during a relaxation operation has a value greater than the first inclination angle. According to paragraph 1,
A display device wherein an inclination angle of the elastic driving unit during a contraction operation has a value smaller than the first inclination angle. According to paragraph 1,
A display device wherein the first auxiliary member and the second auxiliary member are joined by bonding each of the joints with an adhesive. According to paragraph 1,
The display device wherein the distance between the flow stopper provided on the first auxiliary member and the flow stopper provided on the second auxiliary member is set in consideration of the height of the side surface of the back cover. According to clause 11,
When the elastic drive unit relaxes, the distance between the flow stopper provided on the first auxiliary member and the flow stopper provided on the second auxiliary member is set to prevent the display panel from protruding outward from the side of the back cover. Display device set. According to clause 12,
The display device wherein the distance between the base portion of the first auxiliary member and the base portion of the second auxiliary member and the distance between the flow stopper of the first auxiliary member and the flow stopper of the second auxiliary member have an inversely proportional relationship. The display panel of claim 1, wherein:
A first substrate including a light emitting element disposed in a display area and a bonding pad disposed in a non-display area; and
A display device comprising a second substrate disposed opposite to the first substrate. According to clause 14,
The display device further includes a printed circuit board disposed on a rear surface of the second substrate and transmitting a driving control signal for controlling the operation of the light emitting device to the flexible printed circuit board. According to clause 15,
One side of the flexible printed circuit board disposed in the first area is electrically connected to a bonding pad disposed on the first substrate, and the other side of the flexible printed circuit board is electrically connected to a printed circuit board on the back of the second substrate. And
The display device wherein the flexible circuit board electrically connects the bonding pad and the printed circuit board using a reverse bonding method. According to clause 14,
The display device wherein the joining auxiliary member is disposed on a rear surface of the second substrate.

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