Display device and electronic device including the same

Abstract

The invention relates to a display device and an electronic device including the same. A display device includes: a display panel including a non-display area in which a plurality of pad electrodes are disposed; and a driving unit including a plurality of bump electrodes. The bump electrodes include a plurality of first bump electrodes and a plurality of second bump electrodes. Each of the first bump electrode and the second bump electrode includes a plurality of protruding members, and a bonding layer covering the plurality of protruding members. A first area of each of the plurality of first bump electrodes is larger than a second area of each of the plurality of second bump electrodes. An area of a first contact region between the bonding layer of each of the first bump electrodes and the first pad electrode is larger than an area of a second contact region between the bonding layer of each of the second bump electrodes and the second pad electrode.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2024-0103143, filed on August 2, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates herein to a display device including a driving unit and raised electrodes, and to an electronic device including a display device. Background Technology

[0004] Electronic devices that provide images to users, such as smartphones, digital cameras, laptops, navigation systems, and smart TVs, include display devices for displaying images. The display device generates images and provides them to the user via a screen.

[0005] The display device includes a display panel for displaying images. The display panel includes a plurality of gate lines, a plurality of data lines, and a plurality of pixels connected to the plurality of gate lines and the plurality of data lines.

[0006] The display panel can be connected to a driving unit, which provides the electrical signals necessary for displaying images to the gate lines or data lines. Summary of the Invention

[0007] This disclosure provides a display device and an electronic device that have improved electrical connection characteristics between pad electrodes and raised electrodes.

[0008] According to an embodiment of this disclosure, a display device includes: a display panel including a display area in which pixels are disposed and a non-display area in which a plurality of pad electrodes are disposed; and a driving unit disposed on the display panel and including a plurality of raised electrodes, each of the plurality of raised electrodes being connected to a corresponding pad electrode among the plurality of pad electrodes. The plurality of raised electrodes includes: a plurality of first raised electrodes arranged along a first direction; and a plurality of second raised electrodes spaced apart from the plurality of first raised electrodes along a second direction intersecting the first direction and arranged along the first direction. Each of the plurality of first raised electrodes and the plurality of second raised electrodes includes: a plurality of protruding members protruding to be adjacent to the display panel; and a bonding layer covering the plurality of protruding members and comprising metal. The bonding layer of each of the plurality of first raised electrodes partially contacts a first pad electrode among the plurality of pad electrodes, and the bonding layer of each of the plurality of second raised electrodes partially contacts a second pad electrode among the plurality of pad electrodes. A first area of ​​each of the plurality of first raised electrodes is larger than a second area of ​​each of the plurality of second raised electrodes. The area of ​​the first contact region between the bonding layer and the first pad electrode of each of the plurality of first raised electrodes is greater than the area of ​​the second contact region between the bonding layer and the second pad electrode of each of the plurality of second raised electrodes.

[0009] In one embodiment, the display device may further include a first adhesive layer disposed between the display panel and the driving unit and bonding the display panel to the driving unit. The first adhesive layer may include a non-conductive film.

[0010] In one embodiment, the driving unit may further include: a driving integrated circuit; and a driving pad disposed below the lower surface of the driving integrated circuit. Multiple raised electrodes may be disposed below the lower surface of the driving integrated circuit.

[0011] In an embodiment, each of the plurality of first protruding electrodes and the plurality of second protruding electrodes may further include an intermediate layer disposed between the plurality of protruding members and the bonding layer and electrically connected to the drive pad.

[0012] In one embodiment, the first pad electrode may overlap with each of a plurality of first protruding electrodes in a plane, and the second pad electrode may overlap with each of a plurality of second protruding electrodes in a plane.

[0013] In an embodiment, the planar area of ​​each of the plurality of protruding members in each of the plurality of first protruding electrodes may be greater than the planar area of ​​each of the plurality of protruding members in each of the plurality of second protruding electrodes.

[0014] In an embodiment, the number of protruding members in each of the plurality of first protruding electrodes may be greater than the number of protruding members in each of the plurality of second protruding electrodes.

[0015] In one embodiment, multiple protruding members in each of the plurality of first protruding electrodes may be arranged side by side in a second direction, and multiple protruding members in each of the plurality of second protruding electrodes may be arranged side by side in a second direction.

[0016] In an implementation, the driving unit may include: a first long side extending in a first direction; a second long side extending in the first direction and spaced apart from the first long side along a second direction; a first short side extending in the second direction and connecting the first long side and the second long side to each other; and a second short side extending in the second direction and spaced apart from the first short side along the first direction. A plurality of first protruding electrodes may be configured adjacent to the first long side, and a plurality of second protruding electrodes may be configured adjacent to the second long side.

[0017] In an embodiment, the plurality of protruding electrodes may further include a plurality of third protruding electrodes, which are configured to be adjacent to at least one of the first short side and the second short side and arranged along the second direction.

[0018] In an implementation, the third area of ​​each of the plurality of third protruding electrodes may be greater than the second area.

[0019] In one embodiment, each of the plurality of third protruding electrodes may include: a plurality of third protruding members protruding to be adjacent to a display panel; and a third bonding layer covering the plurality of third protruding members, comprising metal, and in partial contact with one of the plurality of pad electrodes. The area of ​​the third contact region between the third bonding layer of each of the plurality of third protruding electrodes and one of the plurality of pad electrodes may be larger than the area of ​​the second contact region.

[0020] In an implementation, the first area may be about 1.5 to about 3 times the second area.

[0021] In an embodiment, the number of the plurality of first protruding electrodes included in the driving unit may be less than the number of the plurality of second protruding electrodes included in the driving unit.

[0022] In this embodiment, the multiple protruding components may include a polymer material.

[0023] In one implementation, the width of each of the plurality of protruding members may decrease as each of the plurality of protruding members approaches the display panel.

[0024] In one embodiment, the plurality of second protruding electrodes may be positioned closer to the display area than the plurality of first protruding electrodes.

[0025] According to an embodiment, a display device includes: a display panel including a display area in which pixels are disposed and a non-display area in which a plurality of pad electrodes are disposed; and a driving unit disposed on the display panel and including a plurality of raised electrodes, each of the plurality of raised electrodes being connected to a corresponding pad electrode among the plurality of pad electrodes. The plurality of raised electrodes includes: a plurality of first raised electrodes arranged along a first direction; and a plurality of second raised electrodes arranged along the first direction. The plurality of first raised electrodes are spaced apart from the display area, and the plurality of second raised electrodes are interposed between the plurality of first raised electrodes and the display area. Each of the plurality of first raised electrodes and the plurality of second raised electrodes includes: a plurality of protruding members protruding to be adjacent to the display panel; and a bonding layer covering the plurality of protruding members. The bonding layer of each of the plurality of first raised electrodes partially contacts a first pad electrode among the plurality of pad electrodes, and the bonding layer of each of the plurality of second raised electrodes partially contacts a second pad electrode among the plurality of pad electrodes. A first area of ​​each of the plurality of first raised electrodes is different from a second area of ​​each of the plurality of second raised electrodes. The area of ​​the first contact region between the bonding layer and the first pad electrode of each of the plurality of first raised electrodes is different from the area of ​​the second contact region between the bonding layer and the second pad electrode of each of the plurality of second raised electrodes.

[0026] In one embodiment, a first pad electrode may overlap each of a plurality of first raised electrodes in a plane, and a second pad electrode may overlap each of a plurality of second raised electrodes in a plane. Each of the plurality of first raised electrodes may include a plurality of first protruding members and a first bonding layer, the plurality of first protruding members protruding adjacent to a display panel, the first bonding layer covering the plurality of first protruding members, including metal, and partially contacting the first pad electrode. Each of the plurality of second raised electrodes may include a plurality of second protruding members and a second bonding layer, the plurality of second protruding members protruding adjacent to a display panel, the second bonding layer covering the plurality of second protruding members, including metal, and partially contacting the plurality of second pad electrodes.

[0027] According to an embodiment, an electronic device includes: a display panel including a display area in which pixels are disposed and a non-display area in which a plurality of pad electrodes are disposed; a driving unit disposed on the display panel and including a plurality of raised electrodes, each of the plurality of raised electrodes being connected to a corresponding pad electrode among the plurality of pad electrodes; and a first adhesive layer disposed between the display panel and the driving unit and bonding the display panel to the driving unit. The first adhesive layer includes a non-conductive film. The plurality of raised electrodes includes a plurality of first raised electrodes arranged along a first direction and a plurality of second raised electrodes arranged along the first direction. Each of the plurality of first raised electrodes and the plurality of second raised electrodes includes: a plurality of protruding members protruding to be adjacent to the display panel; and a bonding layer covering the plurality of protruding members. The bonding layer of each of the plurality of first raised electrodes partially contacts a first pad electrode among the plurality of pad electrodes, and the bonding layer of each of the plurality of second raised electrodes partially contacts a second pad electrode among the plurality of pad electrodes. A first area of ​​each of the plurality of first raised electrodes is different from a second area of ​​each of the plurality of second raised electrodes. The area of ​​the first contact region between the bonding layer and the first pad electrode of each of the plurality of first raised electrodes is different from the area of ​​the second contact region between the bonding layer and the second pad electrode of each of the plurality of second raised electrodes. Attached Figure Description

[0028] The accompanying drawings are included to provide a further understanding of the present disclosure and, together with the following description, illustrate embodiments of the present disclosure to explain its features.

[0029] Figure 1 This is a perspective view of an electronic device according to an embodiment of the present disclosure.

[0030] Figure 2 This is an exploded perspective view of an electronic device according to an embodiment of the present disclosure.

[0031] Figure 3 This is a cross-sectional view of a display device according to an embodiment of the present disclosure.

[0032] Figure 4 This is a plan view of a display panel according to an embodiment of the present disclosure.

[0033] Figure 5 This is a cross-sectional view of pixels according to an embodiment of the present disclosure.

[0034] Figure 6 This is a side view of a display device according to an embodiment of the present disclosure.

[0035] Figure 7 This is an enlarged perspective view of a portion of a display device according to an embodiment of the present disclosure.

[0036] Figure 8 This is a plan view of a drive unit according to an embodiment of the present disclosure.

[0037] Figure 9A This is a plan view of one of the first protruding electrodes included in the drive unit according to an embodiment of the present disclosure.

[0038] Figure 9B This is a plan view of one of the second protruding electrodes included in the drive unit according to an embodiment of the present disclosure.

[0039] Figure 9C This is a plan view of one of the third protruding electrodes included in the drive unit according to an embodiment of the present disclosure.

[0040] Figures 10A to 10C Each of these is a cross-sectional view of a portion of a display device according to an embodiment of the present disclosure.

[0041] Figure 11 This is a plan view of a drive unit according to an embodiment of the present disclosure.

[0042] Figure 12A This is a plan view of one of the first protruding electrodes included in the drive unit according to an embodiment of the present disclosure.

[0043] Figure 12B This is a plan view of one of the second protruding electrodes included in the drive unit according to an embodiment of the present disclosure.

[0044] Figure 12C This is a plan view of one of the third protruding electrodes included in the drive unit according to an embodiment of the present disclosure.

[0045] Figures 13A to 13C Each of these is a cross-sectional view of a portion of a display device according to an embodiment of the present disclosure.

[0046] Figure 14 This is a block diagram of an electronic device according to one embodiment.

[0047] Figure 15 These are schematic diagrams of electronic devices according to various embodiments. Detailed Implementation

[0048] In this specification, it will be understood that when an element (or region, layer, part, etc.) is referred to as being "on" another element, "connected to" or "attached to" another element, it may be directly on, directly connected to or directly attached to the other element, or it may be indirectly on, indirectly connected to or indirectly attached to the other element, with an intervening element between them.

[0049] Throughout this specification, the same reference numerals denote the same elements. Furthermore, in the drawings, the thickness, scale, and dimensions of elements are exaggerated for the purpose of effectively describing the technical content. As used herein, the term "and / or" includes any and all combinations that the relevant configuration can define.

[0050] It will be understood that although the terms first, second, etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element may be referred to as a second element without departing from the scope of the invention. Similarly, a second element may also be referred to as a first element. Singular terms include plural forms unless otherwise expressly stated.

[0051] Furthermore, for ease of description, terms such as "below," "lower part," "above," and "upper part" are used herein to describe the spatial relationship between one element and another(s) shown in the accompanying drawings. These terms are relative concepts and are based on the directions indicated in the accompanying drawings.

[0052] It will be understood that, when used in this specification, the terms “comprising” and / or “having” indicate the presence of the stated features, integrals, steps, operations, elements, components and / or groups thereof, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or groups thereof.

[0053] In this specification, the term "directly set" may mean that there is no layer, film, region, plate, etc. between one part of a layer, film, region, plate, etc. For example, the term "directly set" may mean that two layers or two components are set such that no other component (such as an adhesive component) is inserted between them.

[0054] Unless otherwise specified, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. It will also be understood that terms, such as those defined in common dictionaries, shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0055] In the following description, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0056] Figure 1 This is a perspective view of an electronic device according to an embodiment of the present disclosure.

[0057] refer to Figure 1The electronic device ED can have a rectangular shape, having a short side extending in a first direction DR1 and a long side extending in a second direction DR2 intersecting the first direction DR1. However, embodiments of this disclosure are not limited thereto, and the electronic device ED can have various shapes such as circles and other polygons.

[0058] In the following text, the direction substantially perpendicular to the plane defined by the first direction DR1 and the second direction DR2 is defined as the third direction DR3. Furthermore, in this specification, the phrase "when viewed from a plane" can be defined as the state of viewing from the third direction DR3.

[0059] The upper surface of the electronic device ED can be defined as a display surface ED-IS, and the display surface ED-IS can have a plane defined by a first direction DR1 and a second direction DR2. Images generated in the electronic device ED can be provided to the user through the display surface ED-IS.

[0060] The display surface ED-IS may include a display area ED-DA and a non-display area ED-NDA surrounding the display area ED-DA. The display area ED-DA may display an image, and the non-display area ED-NDA may not display an image. The non-display area ED-NDA may surround the display area ED-DA and define the boundary of an electronic device ED having a predetermined color.

[0061] Figure 2 This is an exploded perspective view of an electronic device according to an embodiment of the present disclosure.

[0062] refer to Figure 2 The electronic device ED may include a window WM, a display device DD, and a housing BC. The housing BC may house the display device DD and be connected to the window WM. Although not shown, the electronic device ED may also include other electronic modules housed in the housing BC and electrically connected to the display panel DP. For example, the electronic device ED may also include a motherboard, a circuit module mounted on the motherboard, a camera module, a power module, etc.

[0063] A window (WM) can be mounted on a display device (DD). The window (WM) allows an image provided from the display device (DD) to be transmitted to the outside. The window (WM) may include a transmissive area (TA) and a non-transmissive area (NTA). The transmissive area (TA) can be... Figure 1 The display areas ED-DA overlap. The transmissive area TA can have a shape corresponding to the display areas ED-DA.

[0064] The non-transmissive region NTA can be compared with the non-display region ED-NDA (see...) Figure 1 ) overlaps with and has an overlap with the non-display area ED-NDA (see Figure 1The corresponding shape. Compared to the transmissive region TA, the non-transmissive region NTA can have relatively low light transmittance.

[0065] The display device DD can generate images and sense external input. The display device DD may include a display panel DP and an input sensor ISU. Although not shown, the display device DD may also include an anti-reflective component disposed on the input sensor ISU. The anti-reflective component may include a polarizer and a retarder, or a color filter and a black matrix.

[0066] Display panel DP can be a light-emitting display panel. However, the type of display panel DP is not particularly limited to this. For example, display panel DP can be an organic light-emitting display panel or an inorganic light-emitting display panel. The light-emitting layer of an organic light-emitting display panel can include organic light-emitting materials. The light-emitting layer of an inorganic light-emitting display panel can include quantum dots, quantum rods, nano-light-emitting diodes (LEDs), etc. In the following, display panel DP will be described as an organic light-emitting display panel.

[0067] The input sensor ISU can include any of the following: capacitive sensor, optical sensor, ultrasonic sensor, and electromagnetic induction sensor. The input sensor ISU can be formed on the display panel DP through a continuous manufacturing process, or it can be manufactured separately and then attached to the top of the display panel DP by an adhesive layer.

[0068] In the display device DD according to an embodiment of the present disclosure, a portion of the display panel DP can be bent, such that the driving unit DC (see...) Figure 6 The non-display area DP-NDA of the display panel DP is oriented downwards. Figure 3 , which corresponds to Figure 1 The non-display area (ED-NDA) can be bent. However, the bending portion is not limited to this, and the circuit board PB (see...) Figure 6 The display panel (DP) can be bent, while the display panel itself can remain unbent.

[0069] Figure 3 This is a cross-sectional view of a display device according to an embodiment of the present disclosure.

[0070] refer to Figure 3 The display panel (DP) may include a substrate (SUB), a circuit element layer (DP-CL) disposed on the substrate (SUB), a display element layer (DP-OLED), and a thin-film encapsulation layer (TFE). The input sensor (ISU) may be disposed on the thin-film encapsulation layer (TFE).

[0071] The display panel (DP) or substrate (SUB) may include a display area (DP-DA) and a non-display area (DP-NDA) surrounding the display area (DP-DA). The substrate (SUB) may include glass or a flexible plastic material such as polyimide (PI). The display element layer (DP-OLED) may be disposed on the substrate (SUB) within the display area (DP-DA).

[0072] Multiple pixels can be composed of a circuit element layer DP-CL and a display element layer DP-OLED. Although not shown, each pixel may include multiple transistors and at least one capacitor disposed in the circuit element layer DP-CL, and a light-emitting element disposed in the display element layer DP-OLED and connected to the transistors.

[0073] A thin-film encapsulation layer (TFE) can be applied to the DP-CL circuit element layer to cover the DP-OLED display element layer. The TFE protects the pixels from moisture, oxygen, and external contaminants.

[0074] Figure 4 This is a plan view of a display panel according to an embodiment of the present disclosure. Figure 4 It shows Figure 3 The planar shape of the display panel DP is shown.

[0075] refer to Figure 4 The display panel DP may include multiple pixels PX, gate drive circuit GDC, multiple signal lines SGL and multiple pad electrodes DP-PD.

[0076] The display panel DP may include a first portion AA1, a second portion AA2, and a curved portion BA disposed between the first portion AA1 and the second portion AA2. The first portion AA1, the curved portion BA, and the second portion AA2 may be arranged sequentially along a second direction DR2. The curved portion BA may extend from the first portion AA1 in the second direction DR2, and the second portion AA2 may extend from the curved portion BA in the second direction DR2.

[0077] The first portion AA1 may extend in the second direction DR2 and has long sides spaced apart from each other in the first direction DR1. The width of the curved portion BA along the first direction DR1 and the width of the second portion AA2 along the first direction DR1 may be smaller than the width of the first portion AA1 along the first direction DR1.

[0078] Pixels (PX) can be disposed within the display area DP-DA. Each pixel (PX) includes an organic light-emitting element and a pixel driving circuit connected thereto. The gate driving circuit (GDC) sequentially outputs gate signals to multiple gate lines (GL), which will be described later. The transistors of the gate driving circuit (GDC) can be formed using the same process as the transistors of the pixel (PX), such as a low-temperature polycrystalline silicon (LTPS) process or a low-temperature polycrystalline oxide (LTPO) process. The display panel DP may also include another driving circuit that provides light-emitting control signals to the pixels (PX).

[0079] The signal line SGL may include gate line GL, data line DL, power line PL, and control signal line CSL. Each of the gate lines GL can be connected to a corresponding pixel PX within the pixel PX, and each of the data lines DL can be connected to a corresponding pixel PX within the pixel PX. The power line PL can be connected to a pixel PX. The control signal line CSL can provide control signals to the gate drive circuit GDC.

[0080] Signal lines SGL may overlap with the display area DP-DA and the non-display area DP-NDA. Each signal line SGL may include a line portion LP. The line portion LP may overlap with the display area DP-DA and the non-display area DP-NDA.

[0081] Multiple pad electrodes DP-PD can be disposed in the second part AA2 of the non-display area DP-NDA. The multiple pad electrodes DP-PD may include a first pad electrode PD1, a second pad electrode PD2, and a substrate-side pad electrode PD-P. The area in which the first pad electrode PD1 and the second pad electrode PD2 are disposed can be defined as a first pad area PA1, and the area in which the substrate-side pad electrode PD-P is disposed can be defined as a second pad area PA2.

[0082] The first pad area PA1 can be connected to the drive unit DC (see...). Figure 6 The first pad region PA1 may include a first region B1 in which a first pad electrode PD1 is disposed and a second region B2 in which a second pad electrode PD2 is disposed. The first pad electrode PD1 may have a larger planar area than the second pad electrode PD2. The first pad region PA1 and the second pad region PA2 may be disposed within the non-display area DP-NDA. The first pad region PA1 and the second pad region PA2 may be spaced apart from each other in the second direction DR2. The first pad region PA1 may be closer to the display area DP-DA than the second pad region PA2, and the second pad region PA2 may be spaced apart from the display area DP-DA, with the first pad region PA1 interposed between them.

[0083] Each of the second pad electrodes PD2 can be connected to a corresponding data line DL in the data line DL. Although not shown, the first pad electrode PD1 and the second pad electrode PD2 can be electrically connected to each other. The first pad electrode PD1 can be connected to the substrate-side pad electrode PD-P via the connection signal line S-CL.

[0084] The circuit board PB may include multiple circuit pads PB-PD. The circuit pads PB-PD may be arranged on the first direction DR1. The circuit pads PB-PD of the circuit board PB may contact and be connected to the substrate-side pad electrode PD-P of the second pad region PA2.

[0085] Figure 5 This is a cross-sectional view of pixels according to an embodiment of the present disclosure.

[0086] refer to Figure 4 and Figure 5 A pixel (PX) may include a transistor (TR) and a light-emitting element (OLED). The light-emitting element (OLED) may include a first electrode (AE) (or anode), a second electrode (CE) (or cathode), a hole control layer (HCL), an electron control layer (ECL), and a light-emitting layer (EML).

[0087] The transistor TR and the light-emitting element OLED can be disposed on the substrate SUB. Although a transistor TR is shown as an example, the pixel PX can include multiple transistors and at least one capacitor for driving the light-emitting element OLED. The multiple transistors and at least one capacitor can be connected to each other.

[0088] The display area DP-DA may include a light-emitting area LA corresponding to each pixel PX and a non-light-emitting area NLA surrounding the light-emitting area LA. The light-emitting element OLED may be disposed in the light-emitting area LA.

[0089] The substrate SUB may include polyimide (PI) as a flexible plastic material. A barrier layer BRL may be disposed on the substrate SUB. A buffer layer BFL may be disposed on the barrier layer BRL. Both the barrier layer BRL and the buffer layer BFL may be inorganic layers.

[0090] Semiconductor patterns can be disposed on the buffer layer BFL. The semiconductor patterns can include polycrystalline silicon, amorphous silicon, or metal oxide. The semiconductor patterns can be doped with N-type or P-type dopants. The semiconductor patterns can include heavily doped regions and lightly doped regions. The conductivity of the heavily doped regions can be greater than that of the lightly doped regions, and the heavily doped regions can essentially serve as the source (S) and drain (D) of the transistor TR. The lightly doped regions can essentially correspond to the active portion (A) (or channel) of the transistor TR.

[0091] The source (S), active portion (A), and drain (D) of transistor TR can be formed from a semiconductor pattern. A first insulating layer (INS1) can be disposed on the semiconductor pattern. The gate (G) of transistor TR can be disposed on the first insulating layer (INS1). A second insulating layer (INS2) can be disposed on the gate (G). A third insulating layer (INS3) can be disposed on the second insulating layer (INS2). A fourth insulating layer (INS4) can be disposed on the third insulating layer (INS3).

[0092] The connecting electrode CNE may include a first connecting electrode CNE1 and a second connecting electrode CNE2 to connect the transistor TR to the light-emitting element OLED. The first connecting electrode CNE1 may be disposed on the fourth insulating layer INS4 and connected to the drain electrode D through a first contact hole CH1 extending through the first insulating layer INS1 to the fourth insulating layer INS4.

[0093] The fifth insulating layer INS5 can be disposed on the fourth insulating layer INS4. The second connecting electrode CNE2 can be disposed on the fifth insulating layer INS5. The second connecting electrode CNE2 can be connected to the first connecting electrode CNE1 through a second contact hole CH2 extending through the fifth insulating layer INS5. The second connecting electrode CNE2 can be... Figure 4 The data lines DL are located on the same layer.

[0094] The sixth insulating layer INS6 can be disposed on the second connection electrode CNE2. The layer from the buffer layer BFL to the sixth insulating layer INS6 can be defined as the circuit element layer DP-CL. The first insulating layer INS1 to the sixth insulating layer INS6 can be inorganic or organic layers.

[0095] A first electrode AE ​​can be disposed on a sixth insulating layer INS6. The first electrode AE ​​can be connected to a second connecting electrode CNE2 via a third contact hole CH3 extending through the sixth insulating layer INS6. The first electrode AE ​​can be connected to a transistor TR via a first connecting electrode CNE1 and a second connecting electrode CNE2. A pixel-defining film PDL, including an opening PX_OP extending to a predetermined portion of the first electrode AE, can be disposed on the first electrode AE ​​and the sixth insulating layer INS6.

[0096] The hole control layer (HCL) can be disposed on the first electrode (AE) and the pixel defining film (PDL). The hole control layer (HCL) may include a hole transport layer and a hole injection layer.

[0097] The luminescent layer (EML) can be disposed on the hole control layer (HCL). The EML can be disposed in the region corresponding to the opening (PX_OP). The EML can include organic and / or inorganic materials. The EML can generate any of the following light types: red, green, and blue.

[0098] The electron control layer (ECL) can be disposed on the light-emitting layer (EML) and the hole control layer (HCL). The ECL may include an electron transport layer and an electron injection layer. The hole control layer (HCL) and the ECL can be commonly disposed in the light-emitting region (LA) and the non-light-emitting region (NLA).

[0099] The second electrode CE can be disposed on the electronic control layer ECL. The second electrode CE can be shared by multiple pixels PX. The layer including the light-emitting element OLED can be defined as the display element layer DP-OLED.

[0100] The thin-film encapsulation layer TFE can be disposed on the second electrode CE to cover the pixel PX (see...). Figure 4 Although not shown, the thin-film encapsulation layer TFE may include multiple layers. Some of these layers may include an inorganic insulating layer and protect the pixel PX (see [link to TFE]). Figure 4 This protects the pixel PX from moisture / oxygen. Some of the remaining layers may include an organic insulating layer and protect the pixel PX (see [link to other layers]). Figure 4 It is protected from foreign objects such as dust particles.

[0101] A first voltage can be applied to the first electrode AE ​​via transistor TR, and a second voltage with a lower level than the first voltage can be applied to the second electrode CE. Holes and electrons injected into the light-emitting layer EML can recombine with each other to form excitons, and the light-emitting element OLED can emit light when the excitons transition to the ground state.

[0102] Figure 6 This is a side view of a display device according to an embodiment of the present disclosure. Figure 6 It shows in Figure 4 The state in which the curved part BA is bent in the display panel DP. Figure 6 This is a side view of the display device DD as viewed from the first direction DR1.

[0103] because Figure 6 Substrate SUB, circuit element layer DP-CL, display element layer DP-OLED, and thin film encapsulation layer TFE and Figure 5 The substrate SUB, circuit element layer DP-CL, display element layer DP-OLED, and thin film encapsulation layer TFE are the same, so their detailed descriptions will be omitted.

[0104] The display device DD may include a drive unit DC, a circuit board PB, a bend protection layer BPL, and a timing controller T-CON.

[0105] The drive unit DC can be disposed on and mounted on the display panel DP. However, embodiments of this disclosure are not limited thereto. The drive unit DC can generate drive signals required for the operation of the display panel DP based on control signals transmitted from the circuit board PB.

[0106] The circuit board PB can be disposed at one end of the substrate SUB and electrically connected to the circuit element layer DP-CL. The timing controller T-CON can be disposed on the circuit board PB. The timing controller T-CON can be formed as an integrated circuit chip and mounted on the upper surface of the circuit board PB.

[0107] The curved portion BA can be bent so that the second portion AA2 is positioned below the first portion AA1. Therefore, the drive unit DC, the circuit board PB, and the timing controller T-CON can face the opposite direction to the third-party DR3 and be positioned below the second portion AA2.

[0108] A bending protective layer BPL can be disposed on the bent portion BA. The bending protective layer BPL can be disposed adjacent to the edges of the first portion AA1 and the second portion AA2. The bending protective layer BPL can be disposed spaced apart from the thin-film encapsulation layer TFE in the second direction DR2. When the display panel DP is bent, the bending protective layer BPL can be bent together with the bent portion BA.

[0109] Figure 7 This is an enlarged perspective view of a portion of a display device according to an embodiment of the present disclosure. Figure 7 It shows the settings to be consistent with Figure 4 The diagram shows an enlarged view of the drive unit DC, circuit board PB, and display panel DP, where the pad areas PA1 and PA2 overlap. For example, Figure 7 The drive unit DC and circuit board PB are shown as separate from the display panel DP.

[0110] refer to Figure 4 and Figure 7 The drive unit DC can be bonded to the first pad area PA1 via the first adhesive layer CF1. The circuit board PB can be bonded to the second pad area PA2 via the second adhesive layer CF2.

[0111] Each of the first adhesive layer CF1 and the second adhesive layer CF2 may include a synthetic resin having adhesive properties. Each of the first adhesive layer CF1 and the second adhesive layer CF2 may include a non-conductive film. Each of the first adhesive layer CF1 and the second adhesive layer CF2 may not include conductive particles such as conductive balls, and may include a curable polymer material.

[0112] When the first adhesive layer CF1 cures, the first pad electrode PD1, the second pad electrode PD2, and the raised electrode DC-BP can be fixed in contact with each other. When the second adhesive layer CF2 cures, the substrate-side pad electrode PD-P and the circuit pad PB-PD can be fixed in contact with each other.

[0113] The first pad region PA1 of the display panel DP can overlap with the driving unit DC, and the second pad region PA2 can overlap with the circuit board PB. The first pad region PA1 can include a first region B1 in which a first pad electrode PD1 is disposed and a second region B2 in which a second pad electrode PD2 is disposed. The first pad electrode PD1 can have a larger planar area than the second pad electrode PD2. The first pad region PA1 and the second pad region PA2 can be disposed within the non-display area DP-NDA. The first pad region PA1 and the second pad region PA2 can be spaced apart from each other in the second direction DR2.

[0114] A driving unit DC can be disposed on the first pad electrode PD1 and the second pad electrode PD2. The driving unit DC may include a driving integrated circuit DC-B, and the driving integrated circuit DC-B may include an upper surface DC-US and a lower surface DC-DS. The lower surface DC-DS of the driving unit DC may be the surface facing the first pad electrode PD1 and the second pad electrode PD2. The driving unit DC includes a raised electrode DC-BP electrically connected to the first pad electrode PD1 and the second pad electrode PD2 disposed on the substrate SUB. The raised electrode DC-BP may be disposed on the lower surface DC-DS of the driving integrated circuit DC-B. The lower surface DC-DS of the driving integrated circuit DC-B may be the base surface on which the raised electrode DC-BP is disposed. The raised electrode DC-BP may be configured to correspond to the pad electrodes PD1 and PD2.

[0115] The raised electrode DC-BP may include a first raised electrode BP1 and a second raised electrode BP2. The first raised electrode BP1 may have a larger planar area than the second raised electrode BP2. The first raised electrode BP1 and the second raised electrode BP2 may be spaced apart from each other in a second direction DR2. The first raised electrode BP1 may be arranged in a first direction DR1. The second raised electrode BP2 may be arranged in the first direction DR1. Figure 7 In the diagram, for ease of explanation, the planar shape of the protruding electrode DC-BP is shown in dashed lines on the upper surface DC-US of the drive unit DC. However, each of the first protruding electrode BP1 and the second protruding electrode BP2 may have a shape that protrudes from the lower surface DC-DS of the drive unit DC and is exposed to the outside.

[0116] When the driving unit DC is bonded to the display panel DP through the first adhesive layer CF1, at least a portion of each of the first raised electrodes BP1 can contact and be electrically connected to the first pad electrode PD1, and at least a portion of each of the second raised electrodes BP2 can contact and be electrically connected to the second pad electrode PD2. The second raised electrodes BP2 can be positioned closer to the display area DP-DA than the first raised electrodes BP1 (see [link to relevant documentation]). Figure 4 Furthermore, the first raised electrode BP1 can be configured to be aligned with the display area DP-DA (see [reference]). Figure 4 The electrodes are spaced apart, and the second protruding electrode BP2 is inserted between them.

[0117] The driving unit DC may include a driving integrated circuit DC-B. The driving integrated circuit DC-B may be disposed on a raised electrode DC-BP. The driving integrated circuit DC-B may be connected to the raised electrode DC-BP. The driving unit DC can receive a first signal from the outside via the first pad electrode PD1 and the first raised electrode BP1. The driving unit DC can generate a second signal based on the first signal from the outside and provide the second signal to the second pad electrode PD2 via the second raised electrode BP2. The first signal may include an image signal that is a digital signal applied from the outside, and the second signal may include a data signal that is an analog signal. The driving unit DC can generate an analog voltage corresponding to the grayscale value of the image signal. The data signal can be transmitted through... Figure 4 The data line DL shown is provided to pixel PX.

[0118] The circuit board PB can be mounted on the display panel DP. The circuit board PB can be mounted on the substrate-side pad electrode PD-P. The circuit board PB may include an upper surface PB-US and a lower surface PB-DS. The lower surface PB-DS of the circuit board PB may be the surface facing the substrate-side pad electrode PD-P. The circuit board PB may include multiple circuit pads PB-PD electrically connected to the substrate-side pad electrode PD-P. The circuit pads PB-PD can be mounted on the lower surface PB-DS of the circuit board PB. The circuit pads PB-PD can be arranged on a first direction DR1. The circuit board PB can provide image signals, drive voltages, and other control signals to the drive unit DC.

[0119] In the following text, reference will be made to Figure 8 These are used to describe the specific arrangement of multiple raised electrodes of the drive unit and their connection shape with the pad electrodes.

[0120] Figure 8 This is a plan view of a drive unit according to an embodiment of the present disclosure. To illustrate the arrangement of the protruding electrode DC-BP of the drive unit DC, Figure 8 A plan view of the lower surface DC-DS of the driver integrated circuit DC-B is shown.

[0121] refer to Figure 7 and Figure 8 The driving unit DC may include a driving integrated circuit DC-B and a plurality of raised electrodes DC-BP disposed on the lower surface DC-DS of the driving integrated circuit DC-B. The raised electrodes DC-BP include a plurality of first raised electrodes BP1 and a plurality of second raised electrodes BP2.

[0122] Each of the plurality of first protruding electrodes BP1 and the plurality of second protruding electrodes BP2 may be arranged in a first direction DR1. The first protruding electrodes BP1 and the second protruding electrodes BP2 may be spaced apart from each other in a second direction DR2.

[0123] The driving unit DC may include two long sides DC-S1 and DC-S2 extending in the first direction DR1 and two short sides DC-S3 and DC-S4 extending in the second direction DR2. The first protruding electrode BP1 and the second protruding electrode BP2 may be configured adjacent to the long sides DC-S1 and DC-S2. The first protruding electrode BP1 may be configured adjacent to the first long side DC-S1, and the second protruding electrode BP2 may be configured adjacent to the second long side DC-S2. When the driving unit DC is coupled to the display panel DP, the second long side DC-S2 may be configured adjacent to the aforementioned display area DP-DA (see...). Figure 4 ) are adjacent, and the first long side DC-S1 can be adjacent to the display area DP-DA (see Figure 4 The two sides are spaced apart, and the second long side DC-S2 is inserted between them.

[0124] Each of the first protruding electrodes BP1 may have a larger planar area than each of the second protruding electrodes BP2. Each of the first protruding electrodes BP1 and the second protruding electrodes BP2 may have a rectangular shape in the plane. Each of the first protruding electrodes BP1 may be a rectangular shape with a larger planar area than each of the second protruding electrodes BP2.

[0125] At least one of the first raised electrode BP1 and the second raised electrode BP2 may have multiple rows of raised electrodes. In the drive unit DC according to an embodiment of the present disclosure, the second raised electrode BP2 may have two rows of raised electrodes. The second raised electrode BP2 may include a first row BP2-a and a second row BP2-b extending in the first direction DR1. Figure 8 As shown, the second raised electrode BP2 may have only one raised row, or it may have three or more raised rows. Furthermore, the first raised electrode BP1 may have multiple raised rows.

[0126] The raised electrode DC-BP may further include multiple third raised electrodes BP3. The multiple third raised electrodes BP3 may be arranged adjacent to the short sides DC-S3 and DC-S4 of the drive unit DC. The third raised electrodes BP3 may include a left raised electrode BP3-a arranged adjacent to the first short side DC-S3 and a right raised electrode BP3-b arranged adjacent to the second short side DC-S4. Each of the left raised electrode BP3-a and the right raised electrode BP3-b may be arranged along the second direction DR2. The left raised electrode BP3-a and the right raised electrode BP3-b may be spaced apart from each other in the first direction DR1.

[0127] The number of the plurality of first protruding electrodes BP1 and the plurality of second protruding electrodes BP2 included in the drive unit DC can be different from each other. In the drive unit DC according to an embodiment of the present disclosure, the number of first protruding electrodes BP1 can be less than the number of second protruding electrodes BP2. The number of the plurality of second protruding electrodes BP2 included in the drive unit DC can be greater than the number of the plurality of first protruding electrodes BP1 and the plurality of third protruding electrodes BP3.

[0128] Each of the raised electrodes DC-BP may include a plurality of protruding members PP. Each of the plurality of protruding members PP may have a shape that protrudes adjacent to the display panel DP. That is, each of the plurality of protruding members PP may have a shape that protrudes in a direction opposite to that of the third direction DR3.

[0129] In the driving unit DC according to an embodiment of the present disclosure, the plurality of first protruding members PP1 included in each of the first protruding electrodes BP1 and the plurality of second protruding members PP2 included in each of the second protruding electrodes BP2 differ in the number of protruding members or their planar area. Therefore, in the display device including the driving unit DC according to an embodiment of the present disclosure, the corresponding pad electrodes (e.g., Figure 7 The area of ​​each of the first raised electrodes BP1 in contact with the first pad electrode PD1 and the area of ​​the corresponding pad electrode (e.g., Figure 7 The area of ​​each of the second raised electrodes BP2 (contacting the second pad electrode PD2) can be different from each other. The third raised electrode BP3 may include multiple third protruding members PP3, and the third protruding members PP3 may differ from the multiple first protruding members PP1 or the multiple second protruding members PP2 in the number of protruding members or their planar area. This will be discussed later. Figure 9A A detailed description is provided in subsequent figures.

[0130] The drive unit DC may have a shape symmetrical with respect to a reference line VL extending along the second direction DR2. The reference line VL may extend along the second direction DR2 and extend through the center of each of the two long sides DC-S1 and DC-S2 of the drive unit DC. Each of the protruding electrodes DC-BP included in the drive unit DC may be arranged to have a shape symmetrical with respect to the reference line VL. Each of the first protruding electrode BP1 and the second protruding electrode BP2 may be arranged along the first direction DR1 and may be arranged symmetrically with respect to the reference line VL. Each of the left protruding electrode BP3-a and the right protruding electrode BP3-b included in the third protruding electrode BP3 may be arranged along the second direction DR2, and the left protruding electrode BP3-a may be arranged symmetrically with respect to the reference line VL as the right protruding electrode BP3-b may be.

[0131] The driving unit DC may also include an alignment mark AM-D, which is configured to be adjacent to at least any of the raised electrodes DC-BP in one direction. For example, the alignment mark AM-D may be adjacent to the second raised electrode BP2 in a first direction DR1 and to the third raised electrode BP3 in a second direction DR2. The alignment mark AM-D can be used as an identification mark to check the position of the driving unit DC or to align the driving unit DC with the display panel DP during the process of incorporating the driving unit DC into the display panel DP. Figure 8 In the diagram, the alignment mark AM-D is shown as including cross-shaped and square shapes. However, this disclosure is not limited to this. For example, the alignment mark AM-D can be formed in various shapes, as long as it is used to align the various parts.

[0132] Figure 9A This is a plan view of one of the first protruding electrodes included in the drive unit according to an embodiment of the present disclosure. Figure 9B This is a plan view of one of the second protruding electrodes included in the drive unit according to an embodiment of the present disclosure. Figure 9C This is a plan view of one of the third protruding electrodes included in the drive unit according to an embodiment of the present disclosure. Figure 9A It shows Figure 8 An enlarged view of one of the first protruding electrodes BP1-1 among the plurality of first protruding electrodes BP1 shown. Figure 9B It shows Figure 8 An enlarged view of one of the second protruding electrodes BP2-1 among the plurality of second protruding electrodes BP2 shown, and Figure 9C It shows Figure 8 An enlarged view of one of the third protrusion electrodes BP3-1 among the multiple third protrusion electrodes BP3 shown.

[0133] refer to Figure 8, Figure 9A and Figure 9B The first protruding electrode BP1-1 may have a larger planar area than the second protruding electrode BP2-1. The first protruding electrode BP1-1 may have a first width w1 in the first direction DR1, a first length h1 in the second direction DR2, and a first area in the plane. The second protruding electrode BP2-1 may have a second width w2 in the first direction DR1, a second length h2 in the second direction DR2, and a second area in the plane. In embodiments of this disclosure, the first width w1 may be greater than the second width w2. The first area may be greater than the second area. For example, the first area may be about 1.5 to about 3 times the second area.

[0134] Each of the first protruding electrode BP1-1 and the second protruding electrode BP2-1 includes a plurality of protruding members PP. The first protruding electrode BP1-1 may include a plurality of first protruding members PP1, and the second protruding electrode BP2-1 may include a plurality of second protruding members PP2.

[0135] In embodiments of this disclosure, the number of protruding members PP included in the first protruding electrode BP1-1 and the second protruding electrode BP2-1 may differ from each other. The number of first protruding members PP1 included in the first protruding electrode BP1-1 may be greater than the number of second protruding members PP2 included in the second protruding electrode BP2-1. However, this disclosure is not limited thereto. For example, the number of first protruding members PP1 included in the first protruding electrode BP1-1 having a large planar area may be less than the number of second protruding members PP2 included in the second protruding electrode BP2-1 having a small planar area. As an example, Figure 8 , Figure 9A and Figure 9B The diagram shows a first protruding electrode BP1-1 comprising six first protruding members PP1, and a second protruding electrode BP2-1 comprising two second protruding members PP2, which are fewer in number than the first protruding members PP1. However, this disclosure is not limited thereto. For example, the number of protruding members included in each of the first protruding electrode BP1-1 and the second protruding electrode BP2-1 may vary depending on the area of ​​the protruding electrode, the contact area, etc.

[0136] The protruding member PP included in each of the first protruding electrode BP1-1 and the second protruding electrode BP2-1 may have a circular shape in a plane, and the width of the protruding member PP may be substantially the same as each other. The first protruding member PP1 included in the first protruding electrode BP1-1 has a first pattern width d1, and the second protruding member PP2 included in the second protruding electrode BP2-1 has a second pattern width d2, and the first pattern width d1 and the second pattern width d2 may be substantially the same as each other. In this specification, the expression "substantially the same width" includes not only the case where the widths of the patterns are physically the same as each other, but also the case where, although they have the same design, there are differences between them due to errors that occur in the manufacturing process.

[0137] Also refer to Figure 8 and Figures 9A to 9C The third protruding electrode BP3-1 may have a planar area different from that of at least one of the first protruding electrode BP1-1 and the second protruding electrode BP2-1. For example, the third protruding electrode BP3-1 may have a larger planar area than the second protruding electrode BP2-1. The third protruding electrode BP3-1 may have a third width w3 in the first direction DR1, a third length h3 in the second direction DR2, and a third area in the plane. In embodiments of this disclosure, the third length h3 may be greater than the second width w2. The third area may be greater than the second area. For example, the third area may be about 1.5 to about 3 times the second area.

[0138] The third protruding electrode BP3-1 may include a plurality of third protruding members PP3. In embodiments of this disclosure, the number of protruding members included in the third protruding electrode BP3-1 may differ from the number of protruding members included in at least one of the first protruding electrode BP1-1 and the second protruding electrode BP2-1. The number of third protruding members PP3 included in the third protruding electrode BP3-1 may be greater than the number of second protruding members PP2 included in the second protruding electrode BP2-1. However, this disclosure is not limited thereto. For example, the number of third protruding members PP3 included in the third protruding electrode BP3-1 having a large planar area may be less than the number of second protruding members PP2 included in the second protruding electrode BP2-1 having a small planar area. As an example, Figure 9C The third protruding electrode BP3-1 is shown to include six third protruding members PP3. However, the number of protruding members included in the third protruding electrode BP3-1 can vary depending on the area of ​​the protruding electrode, the contact area, etc.

[0139] The third protruding member PP3 included in the third protruding electrode BP3-1 may have a third pattern width d3. The third pattern width d3 may be substantially the same as the first pattern width d1 and the second pattern width d2 described above.

[0140] Figures 10A to 10C Each of these is a cross-sectional view of a portion of a display device according to an embodiment of the present disclosure. Figure 10A It shows the relationship with Figure 9A The cross-section of the display device DD corresponding to line I-I' is shown. Figure 10B It shows the relationship with Figure 9B The cross-section of the display device DD corresponding to line II-II' shown. Figure 10C It shows the relationship with Figure 9C The cross-section of the display device DD corresponding to line III-III' shown.

[0141] Also refer to Figures 9A to 9C and Figures 10A to 10C The display device DD according to embodiments of the present disclosure may include a display panel DP and a driving unit DC, and the display panel DP and the driving unit DC may be bonded to each other through a first adhesive layer CF1. The first adhesive layer CF1 may include a synthetic resin having adhesive properties. Each first adhesive layer CF1 may include a non-conductive film. Each first adhesive layer CF1 may not include conductive particles such as conductive balls, and may include a curable polymer material.

[0142] The display panel DP includes a substrate SUB, multiple insulating layers BFL, INS1, INS2, INS3 and INS4 disposed on the substrate SUB, and pad electrodes PD1, PD2 and PD3. The pad electrodes PD1, PD2 and PD3 can be electrically connected to corresponding signal lines. In embodiments of this disclosure, the first pad electrode PD1 can be electrically connected to the connection signal line S-CL. The second pad electrode PD2 can be electrically connected to the data line DL. The third pad electrode PD3 can be electrically connected to the auxiliary line ADL.

[0143] The driving unit DC may include a driving integrated circuit DC-B and raised electrodes BP1, BP2 and BP3 disposed below the driving integrated circuit DC-B. The raised electrodes BP1, BP2 and BP3 may include multiple protruding members PP1, PP2 and PP3 and bonding layers CM1, CM2 and CM3.

[0144] The drive unit DC may further include drive pads DC-P1, DC-P2, and DC-P3 disposed below the drive integrated circuit DC-B, and a drive insulating layer DC-I that exposes a portion of the lower surfaces of the drive pads DC-P1, DC-P2, and DC-P3 and covers the remainder of the lower surfaces of the drive pads DC-P1, DC-P2, and DC-P3. The drive pads DC-P1, DC-P2, and DC-P3 may be disposed on the lower surface DC-DS of the drive integrated circuit DC-B. The drive pads DC-P1, DC-P2, and DC-P3 are electrically connected to the raised electrodes BP1, BP2, and BP3, such that they can transmit signals provided from the drive integrated circuit DC-B to the raised electrodes BP1, BP2, and BP3, or transmit signals provided from the raised electrodes BP1, BP2, and BP3 to the drive integrated circuit DC-B. The drive pads DC-P1, DC-P2, and DC-P3 may include a first drive pad DC-P1, a second drive pad DC-P2, and a third drive pad DC-P3. A first raised electrode BP1 is electrically connected to the first drive pad DC-P1, a second raised electrode BP2 is electrically connected to the second drive pad DC-P2, and a third raised electrode BP3 is electrically connected to the third drive pad DC-P3.

[0145] The driving insulating layer DC-I may include insulating material. The driving insulating layer DC-I may be an inorganic layer or an organic layer.

[0146] Multiple protruding members PP1, PP2, and PP3, including those in the raised electrodes BP1, BP2, and BP3, may protrude from the lower surface DC-DS of the driver integrated circuit DC-B in a direction adjacent to the display panel DP. The multiple protruding members PP1, PP2, and PP3 may comprise a polymer material. The multiple protruding members PP1, PP2, and PP3 may comprise, for example, polyimide.

[0147] Each of the plurality of protruding members PP1, PP2, and PP3 may have a circular shape in a plane, and the widths of the plurality of protruding members PP1, PP2, and PP3 in one direction may be substantially the same as each other. That is, the first pattern width d1 of the first protruding member PP1, the second pattern width d2 of the second protruding member PP2, and the third pattern width d3 of the third protruding member PP3 may be substantially the same as each other. Each of the plurality of protruding members PP1, PP2, and PP3 may have a shape in which the width decreases as it approaches the display panel DP. Figures 10A to 10CAs shown, each of the plurality of protruding members PP1, PP2, and PP3 may have a cylindrical shape having a rounded lower surface configured to be adjacent to the display panel DP, such that the width of each of the plurality of protruding members PP1, PP2, and PP3 decreases as it approaches the display panel DP. However, this disclosure is not limited thereto. For example, each of the plurality of protruding members PP1, PP2, and PP3 may have a tapered shape in which the width decreases as it approaches the display panel DP.

[0148] Multiple protruding members PP1, PP2, and PP3 in the protruding electrodes BP1, BP2, and BP3 can be arranged side-by-side along one direction. For example, multiple first protruding members PP1 in each of the first protruding electrodes BP1 can be arranged side-by-side in a second direction DR2. For example, multiple first protruding members PP1 in each of the first protruding electrodes BP1 can be arranged side-by-side in a first direction DR1. For example, multiple second protruding members PP2 in each of the second protruding electrodes BP2 can be arranged side-by-side in a second direction DR2. For example, multiple third protruding members PP3 in each of the third protruding electrodes BP3 can be arranged side-by-side in each of the first direction DR1 and the second direction DR2.

[0149] The bonding layers CM1, CM2, and CM3 included in the protruding electrodes BP1, BP2, and BP3 are respectively disposed below and cover the multiple protruding members PP1, PP2, and PP3. The first protruding electrode BP1 may include a first bonding layer CM1 covering the first protruding member PP1, the second protruding electrode BP2 may include a second bonding layer CM2 covering the second protruding member PP2, and the third protruding electrode BP3 may include a third bonding layer CM3 covering the third protruding member PP3.

[0150] The bonding layers CM1, CM2, and CM3 may include conductive metals. For example, the bonding layers CM1, CM2, and CM3 may include any one selected from gold (Au), copper (Cu), tin (Sn), gold-tin alloy (Au-Sn), tin-silver alloy (Sn-Ag), indium (In), bismuth-tin alloy (Bi-Sn), and tin-lead alloy (Sn-Pb).

[0151] In the display device DD according to an embodiment of the present disclosure, bonding layers CM1, CM2, or CM3 are in contact with corresponding pad electrodes PD1, PD2, or PD3. A first bonding layer CM1 included in a first raised electrode BP1 may contact a first pad electrode PD1, a second bonding layer CM2 included in a second raised electrode BP2 may contact a second pad electrode PD2, and a third bonding layer CM3 included in a third raised electrode BP3 may contact a third pad electrode PD3.

[0152] The protruding electrodes BP1, BP2, and BP3 may further include intermediate layers UM1, UM2, and UM3. Intermediate layers UM1, UM2, and UM3 may be disposed between the protruding members PP1, PP2, and PP3 and the bonding layers CM1, CM2, and CM3. Intermediate layers UM1, UM2, and UM3 may cover the outer surfaces of the protruding members PP1, PP2, and PP3. Intermediate layers UM1, UM2, and UM3 may be electrically connected to the drive pads DC-P1, DC-P2, and DC-P3 of the drive unit DC. Intermediate layers UM1, UM2, and UM3 may include a first intermediate layer UM1 connected to the first drive pad DC-P1 and disposed between the first protruding member PP1 and the first bonding layer CM1; a second intermediate layer UM2 connected to the second drive pad DC-P2 and disposed between the second protruding member PP2 and the second bonding layer CM2; and a third intermediate layer UM3 connected to the third drive pad DC-P3 and disposed between the third protruding member PP3 and the third bonding layer CM3. Intermediate layers UM1, UM2, and UM3 may include conductive metal. The intermediate layers UM1, UM2 and UM3 may include, for example, any one selected from titanium (Ti), titanium tungsten (TiW), copper (Cu), nickel (Ni), gold (Au) and nickel vanadium (NiV).

[0153] In the display device DD according to an embodiment of the present disclosure, the contact areas of the bonding layers CM1 and CM2 included in the first raised electrode BP1 and the second raised electrode BP2, respectively, that contact the corresponding pad electrodes PD1 and PD2, can be different from each other. The first bonding layer CM1 included in the first raised electrode BP1 can contact the corresponding first pad electrode PD1, and the area where the first bonding layer CM1 contacts the corresponding first pad electrode PD1 can be referred to as the first contact area CA1. The second bonding layer CM2 included in the second raised electrode BP2 can contact the corresponding second pad electrode PD2, and the area where the second bonding layer CM2 contacts the corresponding second pad electrode PD2 can be referred to as the second contact area CA2. In the display device DD according to an embodiment of the present disclosure, the area of ​​the first contact area CA1 is larger than the area of ​​the second contact area CA2. In the drive unit DC according to the embodiments of the present disclosure, the widths d1 and d2 of the protruding members PP1 and PP2 included in the first protruding electrode BP1 and the second protruding electrode BP2 respectively can be substantially the same as each other. However, since the number of first protruding members PP1 included in the first protruding electrode BP1 is greater than the number of second protruding members PP2 included in the second protruding electrode BP2, the area of ​​the first contact area CA1 can be greater than the area of ​​the second contact area CA2.

[0154] In the display device DD according to an embodiment of the present disclosure, the third bonding layer CM3 included in the third protruding electrode BP3 can contact the corresponding third pad electrode PD3, and the area where the third bonding layer CM3 contacts the corresponding third pad electrode PD3 can be referred to as the third contact area CA3. In the display device DD according to an embodiment of the present disclosure, the area of ​​the third contact area CA3 can be larger than the area of ​​the second contact area CA2. In the driving unit DC according to an embodiment of the present disclosure, the widths d2 and d3 of the protruding members PP2 and PP3 included in the second protruding electrode BP2 and the third protruding electrode BP3, respectively, can be substantially the same as each other. However, since the number of third protruding members PP3 included in the third protruding electrode BP3 is greater than the number of second protruding members PP2 included in the second protruding electrode BP2, the area of ​​the third contact area CA3 can be larger than the area of ​​the second contact area CA2.

[0155] Refer again Figure 8 The drive unit DC can be divided into an upper portion and a lower portion relative to a center line HL extending along a first direction DR1. The center line HL can extend along the first direction DR1 and pass through the center portion of the drive unit DC along a second direction DR2. A first protruding electrode BP1 can be disposed on the upper portion, and a second protruding electrode BP2 can be disposed on the lower portion. Among the third protruding electrodes BP3, the upper third protruding electrode BP3-S1 can be disposed on the upper portion, and the lower third protruding electrode BP3-S2 among the third protruding electrodes BP3 can be disposed on the lower portion. In embodiments of this disclosure, the number of lower third protruding electrodes BP3-S2 disposed on the lower portion of the drive unit DC and the number of upper third protruding electrodes BP3-S1 disposed on the upper portion of the drive unit DC can be the same.

[0156] Also refer to Figures 8 to 10C In the drive unit DC according to an embodiment of the present disclosure, the total planar area of ​​the protruding members included in the protruding electrode disposed on the upper portion can be between about 75% and about 120% of the total planar area of ​​the protruding members included in the protruding electrode disposed on the lower portion. For example, the total planar area of ​​the protruding members included in the protruding electrode disposed on the upper portion of the drive unit DC can be between about 90% and about 105% of the total planar area of ​​the protruding members included in the protruding electrode disposed on the lower portion of the drive unit DC.

[0157] In embodiments of this disclosure, the number of second protruding electrodes BP2 included in the drive unit DC may be greater than the number of first protruding electrodes BP1 included in the drive unit DC. However, since the number of first protruding members PP1 included in each of the first protruding electrodes BP1 is greater than the number of second protruding members PP2 included in each of the second protruding electrodes BP2, the total planar area of ​​the protruding members included in the protruding electrodes disposed on the upper portion may be between approximately 75% and approximately 120% of the total planar area of ​​the protruding members included in the protruding electrodes disposed on the lower portion.

[0158] Unlike the embodiments disclosed herein, when the number of first protruding members PP1 included in each of the first raised electrodes BP1 and the number of second protruding members PP2 included in each of the second raised electrodes BP2 are the same, because the number of second raised electrodes BP2 included in the drive unit DC is greater than the number of first raised electrodes BP1 included in the drive unit DC, the total planar area of ​​the protruding members included in the raised electrodes disposed on the upper portion can be less than about 50% of the total planar area of ​​the protruding members included in the raised electrodes disposed on the lower portion. Therefore, in the process of pressing the display panel and the drive unit, the pressure applied to the upper and lower portions may become uneven, and defects may occur in the electrical connection between the raised electrodes and the pad electrodes. In the drive unit DC according to an embodiment of the present disclosure, by designing the number of first protruding members PP1 in each of the first protruding electrodes BP1 to be greater than the number of second protruding members PP2 in each of the second protruding electrodes BP2, the total planar area of ​​the protruding members included in the protruding electrodes disposed on the upper portion can be adjusted to be between about 75% and about 120% of the total planar area of ​​the protruding members included in the protruding electrodes disposed on the lower portion.

[0159] Figure 11 This is a plan view of a drive unit according to an embodiment of the present disclosure. Figure 11 The drive unit DC-1 is shown, which is related to Figure 8 The drive unit DC described in [the text] is different. [It will be directed towards]... Figures 8 to 10C The same parts described herein are given the same reference numerals, and detailed descriptions thereof will be omitted.

[0160] refer to Figure 7 and Figure 11The driving unit DC may include a driving integrated circuit DC-B and a plurality of raised electrodes DC-BP disposed on the lower surface DC-DS of the driving integrated circuit DC-B. The raised electrodes DC-BP include a plurality of first raised electrodes BP1 and a plurality of second raised electrodes BP2. Each of the first raised electrodes BP1 may have a larger planar area than each of the second raised electrodes BP2. Each of the first raised electrodes BP1 may be rectangular in shape having a larger planar area than each of the second raised electrodes BP2.

[0161] The number of the plurality of first protruding electrodes BP1 and the plurality of second protruding electrodes BP2 included in the drive unit DC can be different from each other. In the drive unit DC according to an embodiment of the present disclosure, the number of first protruding electrodes BP1 can be less than the number of second protruding electrodes BP2. The number of the plurality of second protruding electrodes BP2 included in the drive unit DC can be greater than the number of the plurality of first protruding electrodes BP1 and the plurality of third protruding electrodes BP3.

[0162] Each of the raised electrodes DC-BP may include a plurality of protruding members PP. Each of the plurality of protruding members PP may have a shape that protrudes adjacent to the display panel DP. That is, each of the plurality of protruding members PP may have a shape that protrudes in a direction opposite to that of the third direction DR3.

[0163] In the driving unit DC according to an embodiment of the present disclosure, the plurality of first protruding members PP1 included in each of the first protruding electrodes BP1 and the plurality of second protruding members PP2 included in each of the second protruding electrodes BP2 differ in their planar areas. Therefore, in the display device including the driving unit DC according to an embodiment, the areas of the regions in contact with the corresponding pad electrodes of each of the first protruding electrodes BP1 and each of the second protruding electrodes BP2 may be different from each other. The third protruding electrode BP3 may include a plurality of third protruding members PP3, and the third protruding members PP3 may differ in their planar areas from the plurality of first protruding members PP1 or the plurality of second protruding members PP2.

[0164] Figure 12A This is a plan view of one of the first protruding electrodes included in the drive unit according to an embodiment of the present disclosure. Figure 12B This is a plan view of one of the second protruding electrodes included in the drive unit according to an embodiment of the present disclosure. Figure 12C This is a plan view of one of the third protruding electrodes included in the drive unit according to an embodiment of the present disclosure. Figure 12A It shows Figure 11 An enlarged view of one of the first protruding electrodes BP1-1 among the plurality of first protruding electrodes BP1 shown. Figure 12B It shows Figure 11 An enlarged view of one of the second protruding electrodes BP2-1 among the plurality of second protruding electrodes BP2 shown, and Figure 12C It shows Figure 11 An enlarged view of one of the third protrusion electrodes BP3-1 among the multiple third protrusion electrodes BP3 shown.

[0165] Also refer to Figure 11 , Figure 12A and Figure 12B The first protruding electrode BP1-1 may have a larger planar area than the second protruding electrode BP2-1. The first protruding electrode BP1-1 may have a first width w1 in the first direction DR1, a first length h1 in the second direction DR2, and a first area in the plane. The second protruding electrode BP2-1 may have a second width w2 in the first direction DR1, a second length h2 in the second direction DR2, and a second area in the plane. In embodiments of this disclosure, the first width w1 may be greater than the second width w2. The first area may be greater than the second area. For example, the first area may be about 1.5 to about 3 times the second area.

[0166] Each of the first protruding electrode BP1-1 and the second protruding electrode BP2-1 includes a plurality of protruding members PP. The first protruding electrode BP1-1 may include a plurality of first protruding members PP1, and the second protruding electrode BP2-1 may include a plurality of second protruding members PP2.

[0167] In embodiments of this disclosure, the planar areas of the protruding members PP included in the first protruding electrode BP1-1 and the second protruding electrode BP2-1 may be different from each other. The protruding members PP included in the first protruding electrode BP1-1 and the second protruding electrode BP2-1 may have a circular shape in the plane, and the widths of the circular protruding members PP may be different from each other. The first protruding member PP1 included in the first protruding electrode BP1-1 may have a first pattern width d1', and the second protruding member PP2 included in the second protruding electrode BP2-1 may have a second pattern width d2, and the first pattern width d1' may be greater than the second pattern width d2.

[0168] In embodiments of this disclosure, the number of protruding members PP included in the first protruding electrode BP1-1 and the second protruding electrode BP2-1 can be the same as each other. The number of first protruding members PP1 included in the first protruding electrode BP1-1 can be the same as the number of second protruding members PP2 included in the second protruding electrode BP2-1. As an example, Figure 11 , Figure 12A and Figure 12BThe diagram shows a first protruding electrode BP1-1 comprising two first protruding members PP1, and a second protruding electrode BP2-1 comprising the same number of second protruding members PP2 as the first protruding members PP1. However, the number of protruding members included in the first protruding electrode BP1-1 and the second protruding electrode BP2-1, respectively, can vary depending on the area of ​​the protruding electrode, the contact area, etc.

[0169] Also refer to Figure 11 and Figures 12A to 12C The third protruding electrode BP3-1 may have a planar area different from that of at least one of the first protruding electrode BP1-1 and the second protruding electrode BP2-1. For example, the third protruding electrode BP3-1 may have a larger planar area than the second protruding electrode BP2-1. The third protruding electrode BP3-1 may have a third width w3 in the first direction DR1, a third length h3 in the second direction DR2, and a third area in the plane. In embodiments of this disclosure, the third length h3 may be greater than the second width w2. The third area may be greater than the second area. For example, the third area may be about 1.5 to about 3 times the second area.

[0170] The third protruding electrode BP3-1 may include a plurality of third protruding members PP3. In embodiments of this disclosure, the protruding members included in the third protruding electrode BP3-1 may have a circular shape in a plane and may have a planar area different from the planar area of ​​the protruding members included in at least one of the first protruding electrode BP1-1 and the second protruding electrode BP2-1. For example, the third protruding member PP3 included in the third protruding electrode BP3-1 may have a third pattern width d3'. The third pattern width d3' may be greater than the second pattern width d2 described above.

[0171] In embodiments of this disclosure, the number of protruding members PP included in the third protruding electrode BP3-1 may be the same as the number of protruding members PP included in each of the first protruding electrode BP1-1 and the second protruding electrode BP2-1. The number of third protruding members PP3 included in the third protruding electrode BP3-1 may be the same as the number of first protruding members PP1 included in the first protruding electrode BP1-1 and the number of second protruding members PP2 included in the second protruding electrode BP2-1. As an example, Figure 11 and Figures 12A to 12CThe diagram shows that the first protruding electrode BP1-1 includes two first protruding members PP1, the second protruding electrode BP2-1 includes two second protruding members PP2, and the third protruding electrode BP3-1 also includes two third protruding members PP3. However, the number of protruding members included in each of the first to third protruding electrodes BP1-1 can vary depending on the area of ​​the protruding electrode, the contact area, etc.

[0172] Figures 13A to 13C Each of these is a cross-sectional view of a portion of a display device according to an embodiment of the present disclosure. Figure 13A It shows the relationship with Figure 12A The cross-section of the display device DD corresponding to line IV-IV' shown. Figure 13B It shows the relationship with Figure 12B The line V-V' shown corresponds to the cross-section of the display device DD. Figure 13C It shows the relationship with Figure 12C The cross-section of the display device DD corresponding to line VI-VI' shown.

[0173] Also refer to Figures 12A to 12C and Figures 13A to 13C The display device DD according to the embodiments of the present disclosure may include a display panel DP and a driving unit DC-1, and the display panel DP and the driving unit DC-1 may be bonded to each other through a first adhesive layer CF1.

[0174] The display panel DP includes a substrate SUB, multiple insulating layers BFL, INS1, INS2, INS3 and INS4 disposed on the substrate SUB, and pad electrodes PD1, PD2 and PD3. The pad electrodes PD1, PD2 and PD3 can be electrically connected to corresponding signal lines. In embodiments of this disclosure, the first pad electrode PD1 can be electrically connected to the connection signal line S-CL. The second pad electrode PD2 can be electrically connected to the data line DL. The third pad electrode PD3 can be electrically connected to the auxiliary line ADL.

[0175] The driving unit DC-1 includes a driving integrated circuit DC-B and raised electrodes BP1, BP2, and BP3 disposed below the driving integrated circuit DC-B. The raised electrodes BP1, BP2, and BP3 include multiple protruding members PP1, PP2, and PP3 and bonding layers CM1, CM2, and CM3.

[0176] Multiple protruding members PP1, PP2, and PP3, including those in the raised electrodes BP1, BP2, and BP3, may protrude from the lower surface DC-DS of the driver integrated circuit DC-B in a direction adjacent to the display panel DP. The multiple protruding members PP1, PP2, and PP3 may comprise a polymer material. The multiple protruding members PP1, PP2, and PP3 may comprise, for example, polyimide.

[0177] The bonding layers CM1, CM2 and CM3 included in the protruding electrodes BP1, BP2 and BP3 are respectively disposed below and cover the multiple protruding members PP1, PP2 and PP3.

[0178] The protruding electrodes BP1, BP2, and BP3 may further include intermediate layers UM1, UM2, and UM3. Intermediate layers UM1, UM2, and UM3 may be disposed between the protruding members PP1, PP2, and PP3 and the bonding layers CM1, CM2, and CM3. Intermediate layers UM1, UM2, and UM3 may respectively cover the outer surfaces of the multiple protruding members PP1, PP2, and PP3. Intermediate layers UM1, UM2, and UM3 may be electrically connected to the drive pads DC-P1, DC-P2, and DC-P3 of the drive unit DC-1.

[0179] In the display device DD according to an embodiment of the present disclosure, bonding layers CM1, CM2, or CM3 are in contact with a corresponding pad electrode PD1, PD2, or PD3. A first bonding layer CM1 included in a first raised electrode BP1 may contact a first pad electrode PD1, a second bonding layer CM2 included in a second raised electrode BP2 may contact a second pad electrode PD2, and a third bonding layer CM3 included in a third raised electrode BP3 may contact a third pad electrode PD3.

[0180] In the display device DD according to an embodiment of the present disclosure, the contact areas of the bonding layers CM1 and CM2 included in the first raised electrode BP1 and the second raised electrode BP2, respectively, that contact with the corresponding pad electrodes PD1 and PD2, may be different from each other. The first bonding layer CM1 included in the first raised electrode BP1 may contact the corresponding first pad electrode PD1, and the area of ​​the first bonding layer CM1 contacting the corresponding first pad electrode PD1 may be referred to as the first contact area CA1. The second bonding layer CM2 included in the second raised electrode BP2 contacts the corresponding second pad electrode PD2, and the area of ​​the second bonding layer CM2 contacting the corresponding second pad electrode PD2 may be referred to as the second contact area CA2. In the display device DD according to an embodiment of the present disclosure, the area of ​​the first contact area CA1 is larger than the area of ​​the second contact area CA2.

[0181] In the display device DD according to an embodiment of the present disclosure, since the first pattern width d1' of the first protruding member PP1 and the second pattern width d2 of the second protruding member PP2 are different from each other, the area of ​​the first contact area CA1 and the area of ​​the second contact area CA2 can be different from each other. Since the first pattern width d1' of the first protruding member PP1 is greater than the second pattern width d2 of the second protruding member PP2, the area of ​​the first contact area CA1 can also be greater than the area of ​​the second contact area CA2. In the driving unit DC-1 according to an embodiment of the present disclosure, the number of protruding members PP1 and PP2 included in the first protruding electrode BP1 and the second protruding electrode BP2 are the same, but since the pattern widths of the protruding members PP1 and PP2 are different from each other, the area of ​​the first contact area CA1 can be greater than the area of ​​the second contact area CA2.

[0182] In the display device DD according to an embodiment of the present disclosure, the third bonding layer CM3 included in the third protruding electrode BP3 can contact the corresponding third pad electrode PD3, and the area where the third bonding layer CM3 contacts the corresponding third pad electrode PD3 can be referred to as the third contact area CA3. In the display device DD according to an embodiment of the present disclosure, the area of ​​the third contact area CA3 can be larger than the area of ​​the second contact area CA2. In the driving unit DC-1 according to an embodiment of the present disclosure, the number of protruding members PP2 and PP3 included in the second protruding electrode BP2 and the third protruding electrode BP3, respectively, can be substantially the same. However, since the third pattern width d3' of the third protruding member PP3 included in the third protruding electrode BP3 is larger than the second pattern width d2 of the second protruding member PP2 included in the second protruding electrode BP2, the area of ​​the third contact area CA3 can also be larger than the area of ​​the second contact area CA2.

[0183] Refer again Figure 11 The drive unit DC-1 can be divided into an upper portion and a lower portion relative to a center line HL extending along a first direction DR1. The center line HL can extend along the first direction DR1 and pass through the center portion of the drive unit DC-1 along a second direction DR2. A first protruding electrode BP1 can be disposed on the upper portion, and a second protruding electrode BP2 can be disposed on the lower portion. Among the third protruding electrodes BP3, the upper third protruding electrode BP3-S1 can be disposed on the upper portion, and the lower third protruding electrode BP3-S2 among the third protruding electrodes BP3 can be disposed on the lower portion. In embodiments of this disclosure, the number of lower third protruding electrodes BP3-S2 disposed on the lower portion of the drive unit DC-1 and the number of upper third protruding electrodes BP3-S1 disposed on the upper portion of the drive unit DC-1 can be the same.

[0184] Also refer to Figures 11 to 13C In the drive unit DC-1 according to an embodiment of the present disclosure, the total planar area of ​​the protruding members included in the protruding electrodes disposed on the upper portion can be between approximately 75% and approximately 120% of the total planar area of ​​the protruding members included in the protruding electrodes disposed on the lower portion. For example, in the drive unit DC-1, the total planar area of ​​the protruding members included in the protruding electrodes disposed on the upper portion can be between approximately 90% and approximately 105% of the total planar area of ​​the protruding members included in the protruding electrodes disposed on the lower portion.

[0185] In embodiments of this disclosure, the number of second protruding electrodes BP2 included in the drive unit DC-1 may be greater than the number of first protruding electrodes BP1 included in the drive unit DC-1. However, since the planar area of ​​each of the first protruding members PP1 included in each of the first protruding electrodes BP1 is greater than the planar area of ​​each of the second protruding members PP2 included in each of the second protruding electrodes BP2, the total planar area of ​​the protruding members included in the protruding electrodes disposed on the upper portion may be between approximately 75% and approximately 120% of the total planar area of ​​the protruding members included in the protruding electrodes disposed on the lower portion.

[0186] Unlike the embodiments disclosed herein, when the planar area of ​​each of the first protruding members PP1 included in each of the first raised electrodes BP1 and the planar area of ​​each of the second protruding members PP2 included in each of the second raised electrodes BP2 are the same, because the number of second raised electrodes BP2 included in the driving unit DC-1 is greater than the number of first raised electrodes BP1 included in the driving unit DC-1, the total planar area of ​​the protruding members included in the raised electrodes disposed on the upper portion can be less than about 50% of the total planar area of ​​the protruding members included in the raised electrodes disposed on the lower portion. Therefore, in the process of pressing the display panel and the driving unit, the pressure applied to the upper and lower portions may become uneven, and defects may occur in the electrical connection between the raised electrodes and the pad electrodes. In the drive unit DC-1 according to an embodiment of the present disclosure, by designing the planar area of ​​each of the first protruding members PP1 included in each of the first protruding electrodes BP1 to be larger than the planar area of ​​each of the second protruding members PP2 included in each of the second protruding electrodes BP2, the total planar area of ​​the protruding members included in the protruding electrodes disposed on the upper portion can be adjusted to be between about 75% and about 120% of the total planar area of ​​the protruding members included in the protruding electrodes disposed on the lower portion.

[0187] In the display device DD according to an embodiment of the present disclosure, the raised electrodes BP1, BP2, and BP3 included in the driving units DC and DC-1 include protruding members PP1, PP2, and PP3 and bonding layers CM1, CM2, and CM3, and the bonding layers CM1, CM2, and CM3 are in direct contact with the corresponding pad electrodes PD1, PD2, and PD3. Therefore, even if the first adhesive layer CF1 for bonding the display panel DP to the driving unit DC or DC-1 does not include individual conductive particles such as conductive balls, the raised electrodes BP1, BP2, and BP3 of the driving unit DC or DC-1 and the pad electrodes PD1, PD2, and PD3 of the display panel DP can be electrically connected to each other. Therefore, even if the display panel DP and the driving unit DC or DC-1 are misaligned, short circuits caused by conductive particles such as conductive balls will not occur, and thus, the electrical connection characteristics between the pad electrodes and the raised electrodes can be improved.

[0188] According to embodiments, at least some of the protruding electrodes BP1, BP2, and BP3 included in the drive unit DC or DC-1 may have a planar area different from the remaining protruding electrodes. For example, the first protruding electrode BP1 may have a larger planar area than the second protruding electrode BP2. During the pressing process, a larger pressure may be applied to each of the first protruding electrodes BP1 with a relatively large planar area, and a smaller pressure may be applied to each of the second protruding electrodes BP2 with a relatively small planar area. Unlike the display device according to embodiments of the present disclosure, when the number and planar area of ​​the protruding members respectively disposed on the first protruding electrodes BP1 and the second protruding electrodes BP2 with different planar areas are the same, the electrical connection characteristics with the pad electrodes may also change due to the pressure difference applied between the first protruding electrodes BP1 and the second protruding electrodes BP2 during the process of pressing the display panel DP and the drive unit DC or DC-1.

[0189] In a display device according to an embodiment of the present disclosure, by making the number or planar area of ​​a plurality of first protruding members PP1 included in each of the first protruding electrodes BP1 different from the number or planar area of ​​a plurality of second protruding members PP2 included in each of the second protruding electrodes BP2, the area of ​​the contact region between each of the first protruding electrodes BP1 having a planar area larger than that of the second protruding electrode BP2 and the corresponding first pad electrode PD1 in contact with the first protruding electrode BP1 can be increased. That is, since the number of a plurality of first protruding members PP1 included in each of the first protruding electrodes BP1 is greater than the number of a plurality of second protruding members PP2 included in each of the second protruding electrodes BP2, or the planar area of ​​a single first protruding member PP1 is larger, the area of ​​the first contact region CA1 between each of the first protruding electrodes BP1 and the corresponding first pad electrode PD1 can be greater than the area of ​​the second contact region CA2 between each of the second protruding electrodes BP2 and the corresponding second pad electrode PD2. Therefore, in the process of pressing the display panel DP and the driving unit DC or DC-1, the pressure between the raised electrode and the pad electrode can be uniformly transmitted, thereby uniformly adjusting the electrical connection characteristics between the raised electrode and the pad electrode. This improves the reliability of the display device including the driving unit.

[0190] The display device according to the embodiments can be applied to various electronic devices. An electronic device according to one embodiment includes the display device described above, and may further include modules or devices with additional functions besides the display device.

[0191] Figure 14 This is a block diagram of an electronic device according to one embodiment. (Reference) Figure 14 According to one embodiment, the electronic device ED_E may include a display module 11, a processor 12, a memory 13, and a power module 14. The display module 11 may include, for example, Figure 4 The display panel shown is DP.

[0192] The processor 12 may include at least one of a central processing unit (CPU), an application processor (AP), a graphics processing unit (GPU), a communication processor (CP), an image signal processor (ISP), and a controller.

[0193] The memory 13 can store the data information required for the operation of the processor 12 or the display module 11. When the processor 12 runs the application program stored in the memory 13, image data signals and / or input control signals are transmitted to the display module 11, and the display module 11 can process the received signals and output image information through the display screen.

[0194] The power module 14 may include a power supply module such as a power adapter or battery device, and a power conversion module that converts the power supplied by the power supply module to generate the power required for the operation of the electronic device ED_E.

[0195] At least one of the components of the electronic device ED_E described above may be included in the display device according to the embodiments described above. Furthermore, some of the discrete modules functionally included in a single module may be included in the display device, and other components may be disposed separately from the display device. For example, the display device may include a display module 11, and the processor 12, memory 13, and power module 14 may be provided in the form of other devices within the electronic device ED_E besides the display device.

[0196] Figure 15 These are schematic diagrams of electronic devices according to various embodiments. (Reference) Figure 15 Various electronic devices to which the display device according to the embodiment is applied may include not only image display electronic devices such as smartphones ED_1a, tablet personal computers (PCs) ED_1b, laptop computers ED_1c, televisions (TVs) ED_1d and desktop displays ED_1e, but also wearable electronic devices including display modules such as smart glasses ED_2a, head-mounted displays ED_2b and smartwatches ED_2c, and vehicle electronic devices including display modules such as CID (central information display) and interior mirror displays arranged on the dashboard of a vehicle, and central instrument panel and dashboard ED_3.

[0197] In the display device according to embodiments of the present disclosure, by making the number or planar area of ​​the protruding members included in the plurality of protruding electrodes in the driving unit different from each other, the area of ​​the contact region between each of the protruding electrodes and the corresponding pad electrode can be adjusted differently. Therefore, even if some of the plurality of protruding electrodes have a planar area different from the planar area of ​​the remaining protruding electrodes, the pressure between the protruding electrodes and the pad electrodes can be uniformly transmitted during the process of pressing the display panel and the driving unit, thereby uniformly adjusting the electrical connection characteristics between the protruding electrodes and the pad electrodes. Therefore, the reliability of the display device including the driving unit can be improved.

[0198] Although embodiments of the present disclosure have been described above, those skilled in the art will understand that various modifications and changes can be made to the inventive concept without departing from the scope and spirit of the present disclosure as set forth in the appended claims.

[0199] Therefore, it should be understood that the technical scope of this disclosure should not be limited to what is described in the detailed description of the specification, but should be determined by the claims described herein.

Claims

1. A display device, comprising: The display panel includes a display area in which pixels are set and a non-display area in which multiple pad electrodes are set; as well as A driving unit is disposed on the display panel and includes a plurality of raised electrodes, each of the plurality of raised electrodes being connected to a corresponding pad electrode among the plurality of pad electrodes. The plurality of protruding electrodes include: Multiple first protruding electrodes are arranged along a first direction; and A plurality of second protruding electrodes are spaced apart from the plurality of first protruding electrodes along a second direction intersecting the first direction, and are arranged along the first direction. Each of the plurality of first protruding electrodes and the plurality of second protruding electrodes includes: Multiple protruding members, protruding to be adjacent to the display panel; and A bonding layer, covering the plurality of protruding members and comprising metal, wherein the bonding layer of each of the plurality of first protruding electrodes is in partial contact with a first pad electrode of the plurality of pad electrodes, and the bonding layer of each of the plurality of second protruding electrodes is in partial contact with a second pad electrode of the plurality of pad electrodes. Wherein, the first area of ​​each of the plurality of first protruding electrodes is greater than the second area of ​​each of the plurality of second protruding electrodes, and Wherein, the area of ​​the first contact region between the bonding layer and the first pad electrode of each of the plurality of first protruding electrodes is greater than the area of ​​the second contact region between the bonding layer and the second pad electrode of each of the plurality of second protruding electrodes.

2. The display device according to claim 1, further comprising: A first adhesive layer is disposed between the display panel and the driving unit, and bonds the display panel to the driving unit. The first adhesive layer includes a non-conductive film.

3. The display device according to claim 1, wherein, The drive unit further includes: Driver integrated circuits; and The driving pad is disposed below the lower surface of the driving integrated circuit, and The plurality of protruding electrodes are disposed below the lower surface of the driving integrated circuit.

4. The display device according to claim 3, wherein, Each of the plurality of first protruding electrodes and the plurality of second protruding electrodes further includes an intermediate layer disposed between the plurality of protruding members and the bonding layer and electrically connected to the drive pad.

5. The display device according to claim 1, in, The first pad electrode overlaps with each of the plurality of first protruding electrodes in a plane, and the second pad electrode overlaps with each of the plurality of second protruding electrodes in the plane.

6. The display device according to claim 5, wherein, The planar area of ​​each of the plurality of protruding members in each of the plurality of first protruding electrodes is greater than the planar area of ​​each of the plurality of protruding members in each of the plurality of second protruding electrodes.

7. The display device according to claim 5, wherein, The number of protruding members in each of the plurality of first protruding electrodes is greater than the number of protruding members in each of the plurality of second protruding electrodes.

8. The display device according to claim 5, in, The plurality of protruding members in each of the plurality of first protruding electrodes are arranged side by side in the second direction, and In this configuration, the plurality of protruding members in each of the plurality of second protruding electrodes are arranged side by side in the second direction.

9. The display device according to claim 1, in, The driving unit includes: The first longer side extends in the first direction; The second long side extends in the first direction and is spaced apart from the first long side along the second direction; The first short side extends in the second direction and connects the first long side and the second long side to each other; and The second short side extends in the second direction and is spaced apart from the first short side along the first direction, and The plurality of first protruding electrodes are configured to be adjacent to the first long side, and the plurality of second protruding electrodes are configured to be adjacent to the second long side.

10. The display device according to claim 9, wherein, The plurality of protruding electrodes further includes a plurality of third protruding electrodes, which are configured to be adjacent to at least one of the first short side and the second short side and arranged along the second direction.

11. The display device according to claim 10, wherein, The third area of ​​each of the plurality of third protruding electrodes is greater than the second area.

12. The display device according to claim 10, in, Each of the plurality of third protruding electrodes includes: Multiple third protruding members protrude to be adjacent to the display panel; and A third bonding layer covers the plurality of third protruding members, comprising metal, and partially contacts one of the plurality of pad electrodes, and Wherein, the area of ​​the third contact region between the third bonding layer of each of the plurality of third protruding electrodes and one of the plurality of pad electrodes is greater than the area of ​​the second contact region.

13. The display device according to claim 1, wherein, The first area is 1.5 to 3 times the second area.

14. The display device according to claim 1, wherein, The number of the plurality of first protruding electrodes included in the driving unit is less than the number of the plurality of second protruding electrodes included in the driving unit.

15. The display device according to claim 1, wherein, The plurality of protruding components comprise polymer materials.

16. The display device according to claim 1, wherein, The width of each of the plurality of protruding members decreases as each of the plurality of protruding members approaches the display panel.

17. The display device according to claim 1, wherein, The plurality of second protruding electrodes are positioned closer to the display area than the plurality of first protruding electrodes.

18. A display device, comprising: The display panel includes a display area in which pixels are set and a non-display area in which multiple pad electrodes are set; as well as A driving unit is disposed on the display panel and includes a plurality of raised electrodes, each of the plurality of raised electrodes being connected to a corresponding pad electrode among the plurality of pad electrodes. The plurality of protruding electrodes include: Multiple first protruding electrodes are arranged along a first direction; and Multiple second protruding electrodes are arranged along the first direction. The plurality of first protruding electrodes are spaced apart from the display area, and the plurality of second protruding electrodes are inserted between the plurality of first protruding electrodes and the display area. Each of the plurality of first protruding electrodes and the plurality of second protruding electrodes includes: Multiple protruding members, protruding to be adjacent to the display panel; and A bonding layer covers the plurality of protruding members, wherein the bonding layer of each of the plurality of first protruding electrodes is in partial contact with a first pad electrode of the plurality of pad electrodes, and the bonding layer of each of the plurality of second protruding electrodes is in partial contact with a second pad electrode of the plurality of pad electrodes. Wherein, the first area of ​​each of the plurality of first protruding electrodes is different from the second area of ​​each of the plurality of second protruding electrodes, and The area of ​​the first contact region between the bonding layer and the first pad electrode of each of the plurality of first protruding electrodes is different from the area of ​​the second contact region between the bonding layer and the second pad electrode of each of the plurality of second protruding electrodes.

19. The display device according to claim 18, in, The first pad electrode overlaps with each of the plurality of first raised electrodes in a plane, and the second pad electrode overlaps with each of the plurality of second raised electrodes in the plane. Each of the plurality of first protruding electrodes includes a plurality of first protruding members and a first bonding layer. The plurality of first protruding members protrude to be adjacent to the display panel. The first bonding layer covers the plurality of first protruding members, includes metal, and partially contacts the first pad electrode. Each of the plurality of second protruding electrodes includes a plurality of second protruding members and a second bonding layer, the plurality of second protruding members protruding to be adjacent to the display panel, the second bonding layer covering the plurality of second protruding members, including metal, and in partial contact with the second pad electrode.

20. Electronic devices, including: The display panel includes a display area in which pixels are set and a non-display area in which multiple pad electrodes are set; A driving unit is disposed on the display panel and includes a plurality of raised electrodes, each of the plurality of raised electrodes being connected to a corresponding pad electrode among the plurality of pad electrodes; as well as A first adhesive layer is disposed between the display panel and the driving unit, and bonds the display panel to the driving unit. The first adhesive layer includes a non-conductive film. The plurality of protruding electrodes includes a plurality of first protruding electrodes arranged along a first direction and a plurality of second protruding electrodes arranged along the first direction. Each of the plurality of first protruding electrodes and the plurality of second protruding electrodes includes: Multiple protruding members, protruding to be adjacent to the display panel; and A bonding layer covers the plurality of protruding members, wherein the bonding layer of each of the plurality of first protruding electrodes is in partial contact with a first pad electrode of the plurality of pad electrodes, and the bonding layer of each of the plurality of second protruding electrodes is in partial contact with a second pad electrode of the plurality of pad electrodes. Wherein, the first area of ​​each of the plurality of first protruding electrodes is different from the second area of ​​each of the plurality of second protruding electrodes, and The area of ​​the first contact region between the bonding layer and the first pad electrode of each of the plurality of first protruding electrodes is different from the area of ​​the second contact region between the bonding layer and the second pad electrode of each of the plurality of second protruding electrodes.

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