DISPLAY FACILITY

Abstract

A display device (100) comprising: a substrate (110) with a display area (DA) in which a plurality of subpixels (SP) are arranged, and a non-display area (NDA) surrounding the display area (DA); a plurality of lines (130) arranged in the non-display area (NDA) on the substrate (110) and each connected to a plurality of tabs (120); a connecting line (140) connecting the plurality of lines (130); and a heat path change section (150) partially overlapping the connecting line (140), wherein the substrate (110) has a cathode electrode (117) arranged in the display area (DA) and a section of the non-display area (NDA), and the heat path change section (150) is connected to the cathode electrode (117).

Description

Technical area

[0001] The present disclosure relates to a display device for displaying images. BACKGROUND

[0002] Since an organic light-emitting display device has a high response speed and low energy consumption, and unlike a liquid crystal display device, emits light itself without a separate light source, there are no problems regarding the viewing angle, which is why the organic light-emitting display device has attracted attention as the next generation of flat panel display technology.

[0003] Such a display device shows an image by light emission from a light-emitting element layer, which has a light-emitting layer arranged between a pixel electrode and a counter electrode.

[0004] The display assembly has multiple tabs that apply energy (or a signal) to the light-emitting layer to display the image, and multiple leads connected to each of the tabs. However, if an energy (or signal) difference occurs between the leads connected to different tabs, a connecting lead (e.g., a shorting rail) that links the multiple leads will heat up (or overheat). This heating (or overheating) of the connecting lead (e.g., the shorting rail) can cause problems such as a polarizing plate melting. SUMMARY

[0005] One objective of the present disclosure is to provide a display device that can prevent the melting of a polarization plate.

[0006] Another objective of the present disclosure is to provide a display device in which the peak temperature of a display panel can be reduced.

[0007] Another objective of the present disclosure is to provide a display device capable of preventing vertical line stains.

[0008] Another purpose of the present disclosure is to provide a display device whose energy consumption can be reduced.

[0009] The problems to be solved by the examples of the present disclosure are not limited to those mentioned above, and other problems not mentioned will be apparent to the person skilled in the art who is familiar with the technical spirit of the present disclosure from the following description.

[0010] To solve at least one of the problems mentioned above, the present disclosure provides a display device comprising: a substrate with a display area in which a plurality of subpixels are arranged and a non-display area surrounding the display area; a plurality of conductors arranged in the non-display area on the substrate and connected to each of a plurality of tabs; a connecting conductor connecting the plurality of conductors; and a heat path change section partially overlapping the connecting conductor, wherein the substrate has a cathode electrode arranged in the display area and a portion of the non-display area, and wherein the heat path change section is connected to the cathode electrode. Preferred embodiments of the display device are described in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings, which are included for a better understanding of the disclosure and form part of this application, illustrate embodiments of the disclosure and, together with the description, serve to explain the principle of the disclosure. The drawings include: Fig. Figure 1 is a schematic top view of a display device according to an embodiment of the present disclosure. Fig. 2 is a schematic cross-sectional view of the in Fig. 1 shown line I-I'. Fig. 3 is a schematic top view of the in Fig. Part A shown in section 1. Fig. Figure 4 is a schematic enlarged view of the in Fig. Part B shown in section 3. Fig. 5 is a schematic cross-sectional view of the in Fig. 4 shown line II-II'. Fig. 6 is a schematic enlarged view of the in Fig. Part C shown in section 4. Fig. 7 is a schematic cross-sectional view of the in Fig. 4 lines II-III' shown. DETAILED DESCRIPTION OF THE REVELATION

[0012] Detailed reference will now be made to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Where possible, the same reference numerals are used in the drawings to refer to identical or similar parts.

[0013] The advantages and features of the present disclosure, as well as its implementation methods, are explained with reference to the following embodiments and the accompanying drawings.

[0014] However, the present disclosure can be embodied in various forms and should not be considered limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure is complete and comprehensive and fully conveys to those skilled in the art the scope of the present disclosure.

[0015] A shape, size, ratio, angle, and number disclosed in the drawings to describe embodiments of the present disclosure are merely an example, and therefore the present disclosure is not limited to the details shown. The same reference numerals refer throughout to the same elements. In the following description, the detailed description of the relevant known function or configuration is omitted where it is determined that it would unnecessarily obscure the important point of the present disclosure.

[0016] In a case where the terms “have”, “have”, and “include” described in the present disclosure are used, a further part may be added unless “only ~” is used. The terms in the singular form may include plural forms unless otherwise stated.

[0017] When interpreting an element, the element is designed in such a way that it has an error range, even if this is not explicitly described.

[0018] When describing a positional relationship, for example, when a positional relationship between two parts is described as "on", "above", "below" and "next to", one or more other parts may be positioned between the two parts unless "only" or "directly" is used.

[0019] When describing a temporal relationship, for example when the temporal sequence is described as "after", "subsequently", "next" and "before", a case that is not continuous may be included unless "direct" or "immediately" is used.

[0020] It is understood that the terms "first", "second", etc. can be used here to describe different elements, but these elements should not be restricted by these terms.

[0021] These terms are used only to distinguish one element from another. For example, a first element could be called a second element, and likewise a second element could be called a first element, without deviating from the scope of the present revelation.

[0022] “X-axis direction”, “Y-axis direction” and “Z-axis direction” should not only be interpreted as a geometric relationship of a mutual vertical relationship, but may have a broader directional dependency within the range in which elements of the present disclosure can function functionally.

[0023] The term "at least one" should be understood to encompass all combinations of one or more of the associated listed elements. For example, the meaning of "at least one of a first element, a second element, and a third element" refers to the combination of all elements that can be derived from two or more of the first element, the second element, and the third element, as well as the first element, the second element, or the third element.

[0024] Features of different embodiments of the present disclosure may be partially or completely coupled or combined and, as is well known to those skilled in the art, may interact with one another and be technically controlled in various ways. The embodiments of the present disclosure may be carried out independently of one another or together in a dependent relationship.

[0025] The preferred embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0026] Fig. 1 is a schematic top view of a display device according to an embodiment of the present disclosure, and Fig. 2 is a schematic cross-sectional view of the in Fig. 1 shown line I-I'.

[0027] In the following, a first direction (Y-axis direction) represents a direction parallel to a plurality of vertically arranged second signal lines SL2, a second direction (X-axis direction) represents a direction parallel to a plurality of horizontally arranged first signal lines SL1, and a third direction (Z-axis direction) represents a thickness direction of a display device 100.

[0028] The following description is based on the assumption that the display device 100 according to one embodiment of the present disclosure is an organic light-emitting display device, but it is not limited to this. That is to say, the display device according to one embodiment of the present disclosure can be implemented as any of the following: a liquid crystal display device, a field emission display device, a quantum dot light-emitting diode display device, an electrophoretic display device, and the organic light-emitting diode display device.

[0029] With reference to Fig. 1. According to one embodiment of the present disclosure, the display device 100 can comprise a substrate 110, a plurality of tabs 120, a plurality of lines 130, a connecting line 140, and a heat path change section 150. The tabs 120 apply energy (or a signal) to a light-emitting element layer to display an image.

[0030] Substrate 110 can have a display area DA, in which a plurality of subpixels SP are arranged, and a non-display area NDA surrounding the display area DA. As shown in Fig. As shown in Figure 1, the substrate 110 can further comprise a cathode electrode 117 which is arranged in a section of the non-display area NDA and the display area DA (or an entire display area DA).

[0031] The plurality of tabs 120 can be coupled to one side of the substrate 110. For example, the plurality of tabs 120 can be coupled to a top side of the substrate 110 that is partially connected to a circuit board 310. The plurality of lines 130 can be connected to each of the plurality of tabs 120. According to one example, the plurality of lines 130 can be arranged in the non-display area (NDA) on the substrate 110. The connecting line 140 (or a plurality of connecting lines 140) can connect the plurality of lines 130. For example, as in Fig. As shown in Figure 1, the connecting line 140 (or any plurality of connecting lines 140) is arranged in the second direction (X-axis direction) along one side (or a side of the substrate 110 that is oriented in the second direction (X-axis direction)) of the substrate 110 and is connected to each plurality of lines 130. In one example, the connecting line 140 can be a pixel energy short-circuit rail.

[0032] As in Fig. As shown in Figure 1, the connecting line 140 can have an upper connecting line 140a, which is positioned in an upper non-display area (or a first non-display area NDA1) based on the display area DA, and a lower connecting line 140b, which is positioned in a lower non-display area (or a fourth non-display area NDA4) based on the display area DA. The upper connecting line 140a and the lower connecting line 140b can each be extended in the second direction (X-axis direction). As shown in Fig. As shown in Figure 1, the upper connecting line 140a and the lower connecting line 140b can be arranged parallel to each other, with the display area DA lying between them.

[0033] The second signal lines SL2 arranged in the display area DA can extend in the first direction (Y-axis direction) and be connected to the upper connecting line 140a and the lower connecting line 140b. Accordingly, the second signal lines SL2 can receive energy (or a signal) from connecting line 140 to control pixel P.

[0034] The heat path change section 150 can partially overlap with the connecting line 140. For example, the heat path change section 150 can overlap with part of the connecting lines 140 in the non-display area (NDA). Accordingly, the heat path change section 150 can change a path along which the heat generated in the connecting line 140 propagates. For example, the heat path change section 150 can overlap between a connecting line 140 and a polarization plate PP (shown in Fig. 2) be arranged to change the path of the heat migrating from the connecting line 140 to the polarization plate PP.

[0035] The heat path change section 150 can be connected to the cathode electrode 117. Therefore, the heat path change section 150 can alter the path of the heat generated by the connecting line 140 and flowing to the polarization plate PP towards the cathode electrode 117. Accordingly, the display device 100, according to one embodiment of the present disclosure, is equipped to dissipate (or distribute) the heat generated by the connecting line 140 via the cathode electrode 117, thereby preventing the polarization plate PP from melting.

[0036] With reference to Fig. 1 According to one embodiment of the present disclosure, the display device 100 may comprise a display panel with a gate driver GD, a plurality of tabs 120 including an integrated source driver circuit (hereinafter referred to as “IC”) 120a, a circuit board 310 and a time controller 320.

[0037] The substrate 110 can include a thin-film transistor 112 and can be a transistor array substrate, a bottom substrate, a base substrate, or a first substrate. The substrate 110 can be a transparent glass substrate or a transparent plastic substrate.

[0038] The opposing substrate 200 can be connected to the substrate 110 via an adhesive element. For example, the opposing substrate 200 is smaller than the substrate 110 and can be connected to the remaining section of the substrate 110, excluding the pad section. The opposing substrate 200 can be a top substrate, a second substrate, or an encapsulation substrate.

[0039] The gate driver GD supplies gate signals to the gate lines according to the gate control signal input from the timer 320. If the source driver IC 120a is manufactured as a driver chip, it can be packaged in multiple Tabs 120 using either a chip-on-film (COF) or a chip-on-plastic (COP) process.

[0040] Pads such as power pads and data pads can be configured in a non-display area of ​​a display panel. The majority of Tabs 120 can have traces connecting the pads to a Source Driver IC 120a, as well as traces connecting the pads to traces of a Circuit Board 310. The majority of Tabs 120 can be attached to the pads using an anisotropic conductive film, allowing the pads to be connected to the traces of the majority of Tabs 120. As shown in Fig. As shown in Figure 1, the majority of lines 130 can be connected to each of the majority of tabs 120.

[0041] With reference to Fig. 1. According to an example, substrate 110 can have a display area DA and a non-display area NDA.

[0042] The display area DA is an area where an image is displayed and can be a pixel array area, an active area, a pixel array unit, a display unit, or a screen. For example, the display area DA can be located in a central section of the display panel.

[0043] The display area DA, according to one example, can have gate lines, data lines, pixel power lines, and a plurality of pixels P. Each of the plurality of pixels P can have a plurality of subpixels SP, which can be defined by the gate lines and the data lines. Each of the plurality of subpixels SP can be defined as a minimum unit area in which light is actually emitted.

[0044] According to one example, at least four subpixels designed to emit light of different colors and arranged adjacent to each other form a unit pixel P among the plurality of subpixels SP. A unit pixel can, among other things, contain a red subpixel, a green subpixel, a blue subpixel, and a white subpixel. According to another example, three subpixels SP designed to emit light of different colors and arranged adjacent to each other form a unit pixel among the plurality of subpixels SP. A unit pixel can contain, but is not limited to, at least one red subpixel, at least one green subpixel, and at least one blue subpixel.

[0045] Each of the plurality of subpixels SP can include a thin-film transistor 112 and a light-emitting element connected to the thin-film transistor 112. The subpixel can have a light-emitting layer (or an organic light-emitting layer) arranged between a first electrode and a second electrode.

[0046] The organic light-emitting layer, which is arranged in each of the plurality of subpixels SP, can individually emit light of different colors or collectively emit white light. For example, if the organic light-emitting layer of each of the plurality of subpixels SP collectively emits white light, each of the red subpixel, the green subpixel, and the blue subpixel can act as a color filter (shown in Fig. 2) (or a wavelength conversion element) for converting white light into light of different colors. In this case, the white subpixel, according to an example, may not contain a color filter. The color filter CF, according to an example, may contain a green color filter, a red color filter, and a blue color filter.

[0047] In the display device 100 according to one embodiment of the present disclosure, an area in which a red color filter is provided can be a red subpixel SP1, an area in which a blue color filter is provided can be a blue subpixel SP3, an area in which a green color filter is provided can be a green subpixel SP4, and an area in which no color filter is provided can be a white subpixel SP2. In the present disclosure, the red subpixel can be expressed as a first subpixel SP1 that is provided for the emission of red light, the blue subpixel can be expressed as a third subpixel SP3 that is configured for the emission of blue light, the green subpixel can be expressed as a fourth subpixel SP4 that is provided for the emission of green light, and the white subpixel can be expressed as a second subpixel SP2 that is provided for the emission of white light.

[0048] Each of the multiple subpixels SP, using the thin-film transistor 112, supplies a predetermined current to the organic light-emitting element corresponding to a data voltage on the data line when a gate signal is input from the gate line. Therefore, the light-emitting layer of each subpixel can emit light with a predetermined brightness corresponding to the predetermined current.

[0049] With reference to Fig. 2. The display area DA has a light-emitting area EA and a non-light-emitting area NEA. The light-emitting area EA is an area in which light is emitted from a light-emitting element layer E. The non-light-emitting area NEA is an area that does not transmit most of the incident light. For example, the non-light-emitting area NEA can be a different area than the light-emitting area EA from which light is emitted. In one example, the non-light-emitting area NEA can be located on the substrate 110 between the majority of subpixels SP. A circuit area CA for emitting light from the light-emitting element layer 120 can be located in the non-light-emitting area NEA. As in Fig. As shown in Figure 2, the circuit area CA can be arranged below a bank 115, according to an example.

[0050] In the non-light-emitting region NEA, a plurality of pixels P and a plurality of lines for controlling each of the plurality of pixels P can be arranged. According to one example, the plurality of lines can comprise a plurality of first signal lines SL1 and a plurality of second signal lines SL2.

[0051] The majority of first signal lines SL1 can run in the second direction (X-axis direction). Each of the majority of first signal lines SL1 can have at least one gate line (or scan line).

[0052] In the following, if the first signal line has multiple lines, a first signal line can refer to a group of signal lines consisting of multiple lines. For example, if the first signal line has two scan lines, a first signal line can refer to a group of signal lines consisting of two scan lines.

[0053] The plurality of second signal lines SL2 can extend in the first direction (Y-axis direction). The plurality of second signal lines SL2 can be lines extended from the plurality of lines 130. The plurality of second signal lines SL2 can intersect the plurality of first signal lines SL1. Each of the plurality of second signal lines SL2 can have a pixel power line and a common power line located at a distance from the pixel power line. In one embodiment, the plurality of second signal lines SL2 can further comprise a plurality of data lines DL (shown in Fig. 4) and a reference line RL (shown in Fig. 4) exhibit. The plurality of data lines DL are provided to supply control signals to each of the plurality of subpixels. For example, the plurality of data lines DL can have a first line DL1 to control the first subpixel SP1, a second line DL2 to control the second subpixel SP2, a third line DL3 to control the third subpixel SP3, and a fourth line DL4 to control the fourth subpixel SP4.

[0054] In the following, if the second signal line has a plurality of lines, a second signal line can refer to a group of signal lines consisting of a plurality of lines. For example, if the second signal line has four data lines, a pixel power line, a common power line, and a reference line, a second signal line can refer to a group of signal lines consisting of four data lines, a pixel power line, a common power line, and a reference line.

[0055] Referring to Fig. 1. The non-display area (NDA) is an area where no image is displayed and can be a peripheral circuit area, a signal supply area, an inactive area, or a frame area. The non-display area (NDA) can be configured to be located near the display area (DA). That is, the non-display area (NDA) can be positioned to surround the display area (DA).

[0056] The display device 100 according to an embodiment of the present disclosure can have a pad section PA arranged in the non-display area NDA. The pad section PA can be used to control the plurality of pixels P. For example, the pad section PA can supply power and / or signals to the plurality of pixels P arranged in the display area DA to output images. According to one example, the pad section PA in the non-display area NDA (or the first non-display area NDA1) above the display area DA can be based on Fig. 1 be arranged.

[0057] The gate driver GD supplies gate signals to the gate lines according to the gate control signal input from the timer 320. The gate driver GD can be implemented on one side of the display area DA of the display panel or on the non-display area NDA outside both sides of the display area DA in a gate driver-in-panel (GIP) configuration, as shown in Fig. 1 shown.

[0058] The plurality of gate drivers GD can be arranged separately on a left side of the display area DA (i.e., the second non-display area) and a right side of the display area DA (i.e., the third non-display area). For example, the plurality of gate drivers GD can be connected to the plurality of pixels P and the plurality of first signal lines SL1 to supply signals to the plurality of pixels P. The plurality of first signal lines SL1 can have at least one line for supplying a signal to drive pixel P.

[0059] The majority of second signal lines SL2 can run in the first direction (Y-axis direction). The majority of second lines can cross the majority of first lines. The majority of second lines SL2 can include a pixel power line and at least one data line for supplying a data voltage to the pixel P. Each of the majority of second lines SL2 can be connected to at least one of a majority of pads, a pixel power shorting rail, or a common power shorting rail. The pixel power shorting rail can be located in the first non-display area NDA1 above the display area DA and in the fourth non-display area NDA4 below it.

[0060] The pixels are arranged so that they overlap at least one of the first or second signal lines and emit predetermined light to display an image. The light-emitting area EA can correspond to an area that emits light in pixel P.

[0061] With reference to Fig. 2. The non-light-emitting area (NEA) can refer to an area provided within the display area (DA) that does not emit light and can be called a dead zone because it does not emit light. The dead zone, according to one example, can be an area where a bank is provided, but it is not limited to this and can refer to any area where no light is emitted.

[0062] The following refers to Fig. 2. The structure of each of the plurality of subpixel SPs is described in detail.

[0063] With reference to Fig. 2. The display device 100 according to an embodiment of the present disclosure may comprise a buffer layer BL, a circuit element layer 111, a thin-film transistor 112, a color filter CF, a planarization layer 113, an anode electrode 114, a bank 115, an organic light-emitting layer 116, a cathode electrode 117 and an encapsulation layer 118.

[0064] As in Fig. As shown in Figure 2, the polarizing plate PP can be arranged on the underside of the substrate 110. According to one example, the polarizing plate PP is intended to reduce the reflection of ambient light due to the multiple conductors.

[0065] Each of the subpixels SP according to an embodiment can have a circuit element layer 111 provided on a top side of the buffer layer BL, including a gate insulating layer 111a, an intermediate layer insulating layer 111b and a passivation layer 111c, a color filter CF provided on the circuit element layer 111 and a planarization layer 113 provided on the color filter CF.

[0066] Furthermore, each of the subpixel SP can also have an anode electrode 114 provided on the planarization layer 113, a bank 115 covering an edge of the anode electrode 114, an organic light-emitting layer 116 provided on the anode electrode 114 and the bank 115, a cathode electrode 117 provided on the organic light-emitting layer 116 and an encapsulation layer 118 on the cathode electrode 117.

[0067] The thin-film transistor 112 for controlling the subpixel SP can be arranged on the circuit element layer 111. The buffer layer BL, together with the gate insulating layer 111a, the intermediate insulating layer 111b, and the passivation layer 111c, can be contained in the circuit element layer 111. The anode electrode 114, the organic light-emitting layer 116, and the cathode electrode 117 can be contained in the light-emitting element layer E.

[0068] The buffer layer BL can be formed between the substrate 110 and the gate insulating layer 111a to protect the thin-film transistor 112. The buffer layer BL can be arranged over the entire surface (or front side) of the substrate 110. The buffer layer BL can serve to block the diffusion of a material contained in the substrate 110 into a transistor layer during a high-temperature manufacturing process of the thin-film transistor 112.

[0069] The thin-film transistor 112 (or a driver transistor) according to an example can have an active layer 112a, a gate electrode 112b, a source electrode 112c and a drain electrode 112d.

[0070] The active layer 112a can have a channel region, a drain region, and a source region, which are formed in a thin-film transistor region of a circuit region CA of the subpixel SP. The drain region and the source region can be spaced apart from each other, with the channel region positioned between them.

[0071] The active layer 112a can be formed from a semiconductor material based on amorphous silicon, polycrystalline silicon, oxide and organic material.

[0072] The gate insulating layer 111a can be formed on the channel region of the active layer 112a. For example, the gate insulating layer 111a can be formed in island form only on the channel region of the active layer 112a.

[0073] The gate electrode 112b can be formed on the gate insulating layer 111a to overlap the channel area of ​​the active layer 112a.

[0074] The interlayer insulating layer 111b can be configured to partially overlap the gate electrode 112b and the drain and source regions of the active layer 112a. The interlayer insulating layer 111b can extend over the entire light-emitting region where light is emitted, as shown in Fig. 2 is shown, in the circuit area CA and in the subpixel SP.

[0075] The source electrode 112c can be electrically connected to the source region of the active layer 112a via a source contact hole provided in the intermediate insulating layer that overlaps the source region of the active layer 112a. The drain electrode 112d can be electrically connected to the drain region of the active layer 112a via a drain contact hole provided in the intermediate insulating layer that overlaps the drain region of the active layer 112a.

[0076] The drain electrode 112d and the source electrode 112c can be made of the same metal material. For example, the drain electrode 112d and the source electrode 112c can each be made of a single metal layer, a single layer of an alloy, or a multiple layer of two or more layers, the material of which is the same as or different from that of the gate electrode 112b.

[0077] The passivation layer 111c can be provided on the substrate 110 to cover the pixel area. The passivation layer 111c covers a drain electrode 112d, a source electrode 112c and a gate electrode 112b of the thin-film transistor 112 as well as the buffer layer BL.

[0078] The color filter CF can be located on the passivation layer 111c. For example, the color filter CF can be located between the circuit element layer 111 and the planarization layer 113. The color filter CF can include the green color filter located in the green subpixel, the red color filter located in the red subpixel, and the blue color filter located in the blue subpixel. Since the white subpixel is used to emit white light, it cannot have a color filter.

[0079] The planarization layer 113 can be provided on the substrate 110 to cover the passivation layer 111c and the color filter CF. For example, the planarization layer 113 can be located between the substrate 110 and the anode electrode 114. The planarization layer 113 can extend across the entire circuit area CA, where the thin-film transistor 112 is located, and across the entire light-emitting area EA. Furthermore, the planarization layer 113 can extend across the other non-display area NDA, with the exception of a pad section PA of the non-display area NDA, and across the entire display area DA. For example, the planarization layer 113 can have an extension section (or an enlarged section) that extends from the display area DA to the other non-display area NDA, with the exception of the pad section PA.Therefore, the planarization layer 113 can have a size that is relatively larger than that of the display area DA.

[0080] The planarization layer 113, according to one example, can be designed to have a relatively large thickness, thereby providing a flat surface on the display area DA and the non-display area NDA. For example, the planarization layer 113 can be made of an organic material such as photoacrylic, benzocyclobutene, polyimide, and fluoropolymer.

[0081] On the other hand, the top surface of the planarization layer 113 can be flat. Accordingly, the anode electrode 114 on the planarization layer 113 can also be flat, and the organic light-emitting layer 116 and the cathode electrode 117 formed thereon can likewise be flat. Since the anode electrode 114, the organic light-emitting layer 116, and the cathode electrode 117—that is, the light-emitting layer E—are formed such that they are flat in the light-emitting region EA, the thickness of the anode electrode 114, the organic light-emitting layer 116, and the cathode electrode 117 can be uniform in the light-emitting region EA. Therefore, the organic light-emitting layer 116 can emit uniformly without deviation in the light-emitting region EA.

[0082] The anode electrode 114 can be formed on the planarization layer 113. Although not shown, the anode electrode 114 can be connected to a drain electrode 112d or a source electrode 112c of the thin-film transistor 112 via a contact hole extending through the planarization layer 113 and the passivation layer 111c. The edge regions on both sides of the anode electrode 114 can be covered by the bank 115. The anode electrode 114 can be made of at least one transparent metal material or a semi-transmissive metal material.

[0083] Since the display device 100 is configured as a ground emission type according to one embodiment of the present disclosure, the anode electrode 114 can be formed from a transparent conductive material (or TCO) such as indium tin oxide (ITO) or indium zinc oxide (IZO) that can transmit light, or from a semi-transmissive conductive material such as magnesium (Mg), silver (Ag) or an alloy of Mg and Ag.

[0084] However, the material from which the anode electrode 114 is made may contain MoTi. The anode electrode 114 may be a first electrode or a pixel electrode.

[0085] Bank 115 can be a non-light-emitting region and can be located adjacent to the light-emitting region EA of each of the plurality of subpixels SP. For example, bank 115 can be located within the non-light-emitting region NEA. Bank 115 can be configured to cover a portion of the edge of the anode electrode 114. Accordingly, bank 115 can obstruct the anode electrode 114 and the cathode electrode 117 at the edge of the anode electrode 114. The exposed portion of the anode electrode 114 not covered by bank 115 can be contained within the light-emitting section (or light-emitting region EA).

[0086] After the bank 115 is formed, an organic light-emitting layer 116 can be formed to cover the anode electrode 114 and the bank 115. Thus, the bank 115 can be partially located between the anode electrode 114 and the organic light-emitting layer 116. The bank 115, according to one example, can comprise organic and / or inorganic material.

[0087] The organic light-emitting layer 116 can be formed on the anode electrode 114 and the bank 115. For example, the organic light-emitting layer 116 can be located in the light-emitting region EA and in the non-light-emitting region NEA. The organic light-emitting layer 116 can be positioned between the anode electrode 114 and the cathode electrode 117. Therefore, when a voltage is applied to the anode electrode 114 and the cathode electrode 117, an electric field is generated between them. Consequently, the organic light-emitting layer 116 can emit light. The organic light-emitting layer 116 can be formed from a plurality of subpixels SP and a common layer located on the bank 115.

[0088] The organic light-emitting layer 116 according to one embodiment can be configured to emit white light. The organic light-emitting layer 116 can have a plurality of stacks that emit light of different colors. For example, the organic light-emitting layer 116 can have a first stack, a second stack, and a charge-generating layer (CGL) located between the first and second stacks. The light-emitting layer can be configured to emit white light, and thus each of the plurality of subpixels SP can have a color filter CF suitable for a corresponding color.

[0089] The first stack can be provided on the anode electrode 114 and have a structure in which a hole injection layer (HIL), a hole transport layer (HTL), an emission layer (EML(B)) and an electron transport layer (ETL) are stacked sequentially.

[0090] The charge-generating layer can supply the first and second stacks with electrical charge. The charge-generating layer can be an N-type charge-generating layer to supply the first stack with electrons and a P-type charge-generating layer to supply the second stack with holes. The N-type charge-generating layer can contain a metallic material as a dopant.

[0091] The second stack can be provided on top of the first stack and implemented in a structure in which a hole transport layer (HTL), a yellow-green (YG) emission layer (EML(YG)) and an electron injection layer (EIL) are stacked sequentially.

[0092] In the display device 100 according to one embodiment of the present disclosure, the first stack, the charge generation layer, and the second stack can be arranged above the plurality of subpixels SP, since the organic light-emitting layer 116 is provided as a common layer. According to another example, the organic light-emitting layer 116 can be provided in a three-stage or four-stage structure, depending on the number of stacked layers.

[0093] The cathode electrode 117 can be formed on the organic light-emitting layer 116. The cathode electrode 117 can be located in a portion of the non-display area NDA and the display area DA. Within the display area DA, the cathode electrode 117 can be located in the light-emitting area EA and in the non-light-emitting area NEA. That is, the cathode electrode 117 can be positioned to cover the entire display area DA. Consequently, the cathode electrode 117 can be positioned to be larger than the display area DA and smaller than the substrate 110.

[0094] The cathode electrode 117 according to one example can be made of a metallic material. The cathode electrode 117 can reflect the light emitted by the organic light-emitting layer 116 into the plurality of subpixels SP towards a bottom surface of the substrate 110. Therefore, the display device 100 according to one embodiment of the present disclosure can be implemented as a bottom-emission display device.

[0095] The display device 100 according to one embodiment of the present disclosure is a ground-emission type display device and must reflect the light emitted by the organic light-emitting layer 116 towards the substrate 110, so that the cathode electrode 117 can be made of a high-reflectivity metallic material. The cathode electrode 117 according to one example can be formed from a high-reflectivity metallic material, such as a stacked structure (Ti / Al / Ti) of aluminum and titanium, a stacked structure (ITO / Al / ITO) of aluminum and ITO, an Ag alloy, and a stacked structure (ITO / Ag alloy / ITO) of an Ag alloy and ITO. The Ag alloy can be an alloy such as silver (Ag), palladium (Pd), and copper (Cu). The cathode electrode 117 can be referred to as a second electrode, counter electrode, and reflecting electrode.

[0096] The encapsulation layer 118 is formed on the cathode electrode 117. The encapsulation layer 118 serves to prevent oxygen or moisture from penetrating the organic light-emitting layer 116 and the cathode electrode 117. For this purpose, the encapsulation layer 118 can be configured to include a getter capable of absorbing oxygen or moisture. Alternatively, the encapsulation layer 118 can comprise a plurality of layers, including at least one inorganic film and at least one organic film.

[0097] On the other hand, the encapsulation layer 118, as in Fig. As shown in Figure 2, the encapsulation layer 118 can be arranged not only in the light-emitting region EA, but also in the non-light-emitting region NEA. The encapsulation layer 118 can be positioned between the cathode electrode 117 and the opposite substrate 200.

[0098] The display device 100 is described below according to an embodiment of the present disclosure with reference to the Fig. 3, Fig. 4, Fig. 5 to Fig. 6 described in more detail.

[0099] Fig. 3 is a schematic top view of part A, which is in Fig. 1 is shown, Fig. 4 is a schematic enlarged view of part B, which is in Fig. 3 is shown, Fig. 5 is a schematic cross-sectional view of line II-II', which is in Fig. 4 is shown, and Fig. Figure 6 is a schematic enlarged view of part C, which is in Fig. 4 is shown.

[0100] With reference to Fig. 3. The heat path change section 150 can be arranged between the outermost lines 130a, which are connected to each of two different tabs. For example, the plurality of lines 130 can be connected to each of two different tabs. The outermost lines 130a can be lines located at one outermost end of the plurality of lines 130.

[0101] For example, the plurality of Tabs 120 can have a first Tab 121 and a second Tab 122. The plurality of lines 130 can be connected to each of the first Tab 121 and the second Tab 122. Here, from the plurality of lines 130 connected to the first Tab 121, an outermost line can be the first outermost line 131a. From the plurality of lines 130 connected to the second Tab 122, an outermost line can be the second outermost line 132a. The plurality of lines 130 connected to each of the first Tab 121 and the second Tab 122 can be pixel power lines EVDD.

[0102] As in Fig. As shown in Figure 3, the first Tab 121 and the second Tab 122 can be arranged adjacent to each other. The first Tab 121 and the second Tab 122 can each contain the Source Driver IC 120a.

[0103] The majority of lines 130 can have a majority of first lines 131 connected to the first tab 121 and a majority of second lines 132 connected to the second tab 122. As in Fig. As shown in Figure 3, the majority of first lines 131 can have a first outermost line 131a, which is located closest to the majority of second lines 132. The majority of second lines 132 can have a second outermost line 132a, which is located closest to the first outermost line 131a. The heat path change section 150 can be located between the first outermost line 131a and the second outermost line 132a.

[0104] As described above, the heat path change section 150 is located between the connecting line 140 and the polarization plate PP (shown in Fig. 2) positioned to change the path of heat flowing from the connecting line 140 to the polarization plate PP. For example, the heat path changer section 150 is designed to contain a metallic material and to absorb heat emitted by the connecting line 140 and transfer it to the cathode electrode 117. The fact that the heat path changer section 150 absorbs heat from the connecting line 140 here can mean that this heat is transferred by radiant heat. For example, as in Fig. As shown in Figure 5, the heat path change section 150 is provided such that it can overlap the connecting line 140 without being in contact with the connecting line 140 (or in a non-contact state), thus allowing heat to be transferred from the connecting line 140.

[0105] However, since the cathode electrode 117 is arranged over the entire display area DA and part of the non-display area NDA, its area is larger than that of the connecting line 140, thereby increasing heat dissipation efficiency. Accordingly, the display device 100, according to one embodiment of the present disclosure, can prevent the polarization plate PP from melting or being damaged due to the heat from the connecting line 140 by having the heat path change section 150 radiate (or distribute) the heat received from the connecting line 140 to the cathode electrode 117 over a large area.

[0106] Furthermore, according to an embodiment of the present disclosure, the display device 100 is provided such that the heat of the connecting line 140 is radiated (or distributed) via the cathode electrode 117 over the entire surface of the display panel (or the cathode electrode 117), so that the peak temperature of the display panel can be reduced and thus not only the reliability can be improved, but also the service life can be increased.

[0107] Furthermore, according to one embodiment of the present disclosure, the display device 100 is provided such that the heat path change section 150 is arranged between the first outermost line 131a and the second outermost line 132a, so that heat transferred to the heat path change section 150 can be prevented from being transferred to any of the other lines (for example, the first outermost line 131a and the second outermost line 132a), so that the first outermost line 131a and the second outermost line 132a can be protected from damage by heat.

[0108] However, as in Fig. Figure 3 illustrates that the space between the first outermost conduit 131a of the first tab 121 and the second outermost conduit 132a of the second tab 122 is trapezoidal (or inversely trapezoidal or hexagonal), so that the heat path change section 150 arranged between the first outermost conduit 131a and the second outermost conduit 132a can also be provided in a trapezoidal shape (or an inversely trapezoidal shape or a hexagonal shape).

[0109] In the display device 100 according to one embodiment of the present disclosure, the connecting line 140 (or the plurality of connecting lines 140) can connect the plurality of lines 130. The connecting line 140 according to one example can be the pixel energy short-circuit rail. The connecting line 140 according to one example is generally provided in a straight form, but can be provided in a trapezoidal form (or an inverted trapezoidal form or a hexagonal form) with an open side between the first outermost line 131a and the second outermost line 132a.

[0110] In a general display device, the connecting line is provided in a straight form. For example, the connecting line between the first outermost line and the second outermost line is in Fig. 3 is provided in a straight form. Therefore, if there is a deviation in the energy (or signal) applied to the first and second tabs, the current can concentrate in the connecting line with the shortest length between the first outermost line and the second outermost line, which can worsen heat generation and this can lead to the melting of the polarization plate.

[0111] In contrast, in the display device 100 according to one embodiment of the present disclosure, the connecting line 140 between the first outermost line 131a and the second outermost line 132a is provided in a trapezoidal shape (or an inverted trapezoidal shape or a hexagonal shape) with an open side, so that the length of the connecting line 140 between the first outermost line 131a and the second outermost line 132a can be increased. Accordingly, the display device 100 according to one embodiment of the present disclosure can prevent current from concentrating in the connecting line 140 between the first outermost line 131a and the second outermost line 132a, thereby reducing the heat generation in the connecting line 140.

[0112] Since, in the display device 100 according to an embodiment of the present disclosure, the connecting line 140 between the first outermost line 131a and the second outermost line 132a is provided in a trapezoidal shape (or an inverted trapezoidal shape or a hexagonal shape) with an open side, the length (or cross-sectional area) of the connecting line 140 can be increased compared to a general display device in which the connecting line between the first outermost line and the second outermost line is provided in a straight shape, thereby reducing the heat generation per area compared to the energy (or signal) deviation of the first outermost line 131a and the second outermost line 132a.

[0113] Additionally, in the display device 100 according to an embodiment of the present disclosure, the connecting line 140 between the first outermost line 131a and the second outermost line 132a is provided in a trapezoidal shape (or an inverted trapezoidal shape or a hexagonal shape) with an open side, so that a point where heat is generated can be moved towards the pad section PA and thus the influence of the heat on the pixel P of the display area DA can be minimized.

[0114] As in Fig. As illustrated in Figure 1, the cathode electrode 117 can be configured to extend over the entire display area DA and a portion of the non-display area NDA. Accordingly, the heat path modification section 150 can partially overlap the cathode electrode 117 in the non-display area NDA (or the first non-display area NDA1). Since the heat path modification section 150 is located between the first outermost conductor 131a and the second outermost conductor 132a, it can overlap a portion of the connecting conductor 140. For example, the heat path modification section 150 can overlap the portion of the connecting conductor 140 that is configured in the trapezoidal (or inverted trapezoidal or hexagonal) shape with an open side between the first outermost conductor 131a and the second outermost conductor 132a.

[0115] As a result, the display device 100 according to an embodiment of the present disclosure can have a structural feature in which the heat path change section 150 partially overlaps both the cathode electrode 117 and the connecting line 140.

[0116] The above describes that the heat path change section 150 is provided in a trapezoidal shape (or in an inverted trapezoidal shape or in a hexagonal shape), but this is not limited to it, and if it can be arranged between the first outermost pipe 131a and the second outermost pipe 132a, it can be provided in another shape similar to the trapezoidal shape (or the inverted trapezoidal shape or a hexagonal shape), for example in a pentagonal shape, an octagonal shape, etc.

[0117] Meanwhile, the inventor who developed the display device 100 according to the present disclosure conducted investigations to prevent heat generation by interrupting the connection between the first outermost line and the second outermost line, in order to solve the problem of increased heat generation that occurs in a general display device where the connection between the first outermost line and the second outermost line is in a straight form. However, in this case, the problem arises that vertical line spots occur due to energy (or signal) deviations between the lines (e.g., pixel energy lines) arranged in the display area, which are attributable to the energy (or signal) deviations of the different tabs.

[0118] Therefore, according to one embodiment of the present disclosure, the display device 100 is provided in an elongated, trapezoidal shape with one open side, so that the connecting line 140 between the first outermost line 131a and the second outermost line 132a is not interrupted. This prevents current from concentrating in the connecting line 140 between the first outermost line 131a and the second outermost line 132a, thus reducing heat generation. Since the connecting line 140 between the first outermost line 131a and the second outermost line 132a does not need to be interrupted (or divided), vertical line spots can be improved or prevented.

[0119] With reference to Fig. 4 In the display device 100 according to an embodiment of the present disclosure, the connecting line 140 can have a first connecting line 141 and a second connecting line 142.

[0120] The first connecting line 141 can be a line that overlaps the heat path change section 150. The second connecting line 142 can be a line that does not overlap the heat path change section 150. Accordingly, as shown in Fig. As shown in Figure 4, the first connecting line 141 does not overlap the data line DL and / or the reference line RL. In contrast, the second connecting line 142 can overlap the data line DL and / or the reference line RL. As shown in Fig. As illustrated in Figure 4, most of the second connecting line 142 is arranged in the second direction (X-axis direction) and can therefore partially overlap with the data line DL and / or the reference line RL, which are arranged in the first direction (Y-axis direction).

[0121] The second connecting line 142 can be connected to the majority of lines 130. The first connecting line 141 can be indirectly connected to the majority of lines 130 via the second connecting line 142. As in Fig. As illustrated in Figure 4, the connecting line 140, which includes the first connecting line 141 and the second connecting line 142, can be configured in an omega shape. Accordingly, the first connecting line 141 can be configured as follows: Fig. 4 protrude upwards relative to the second connecting line 142, so that the first connecting line 141 can overlap the heat path change section 150, which is positioned upwards relative to the second connecting line 142.

[0122] With reference to Fig. 5. The heat path changer section 150 can be arranged between the polarization plate PP and the connecting line 140. As an example, the heat path changer section 150 can be arranged between the polarization plate PP and the first connecting line 141. The heat path changer section 150 can be positioned at a distance from the first connecting line 141 equal to the thickness of the buffer layer BL. Accordingly, the heat generated by the first connecting line 141 and directed towards the polarization plate PP can be blocked by the heat path changer section 150. Furthermore, the temperature of the heat path changer section 150 can increase due to the heat from the first connecting line 141. This is because the heat path changer section 150 is made of a metallic material and is positioned close to the first connecting line 141.

[0123] As a result, the heat generated in the first connecting line 141 can be transferred to the heat path changer section 150, and the heat transferred to the heat path changer section 150 can be transferred to the cathode electrode 117, which is connected to (or in contact with) the heat path changer section 150. The heat transferred to the cathode electrode 117 can be dissipated (or distributed) to the cathode electrode 117, which has a larger area than the connecting line 140, thus reducing the heat generation per unit area. Therefore, according to one embodiment of the present disclosure, the display device 100 is configured such that the heat generation of the connecting line 140 is dissipated (or distributed) through the heat path changer section 150 and the cathode electrode 117, thereby preventing the polarization plate PP from melting.

[0124] With reference to Fig. 5. A display device 100 according to an embodiment of the present disclosure may further comprise a plurality of contact sections 160 connecting the heat path change section 150 and the cathode electrode 117.

[0125] As in Fig. As illustrated in Figure 5, the cathode electrode 117 and the heat path changer section 150 can be arranged on different layers. For example, the cathode electrode 117 can be arranged on the bank 115, and the heat path changer section 150 can be arranged between the buffer layer BL and the substrate 110. Therefore, in order to transfer the heat transferred to the heat path changer section 150 to the cathode electrode 117, the heat path changer section 150 and the cathode electrode 117 must be connected to each other. In the display device 100 according to one embodiment of the present disclosure, the heat path changer section 150 can be connected to the cathode electrode 117 via the plurality of contact sections 160.Each of the plurality of contact sections 160 can be formed from a metallic material (or a material with high thermal conductivity) to transfer heat from the heat path change section 150 to the cathode electrode 117.

[0126] Each of the plurality of contact sections 160 according to an example can have a first metal layer 160a and a second metal layer 160b.

[0127] The first metal layer 160a can be arranged on the same layer as the connecting line 140. The first metal layer 160a can be formed together with the connecting line 140 when the latter is formed, so that it can be arranged on the same layer as the connecting line 140. For example, the first metal layer 160a can be arranged between the buffer layer BL and the intermediate insulating layer 111b. This first metal layer 160a can be in contact with the heat path change section 150. For example, a bottom surface of the first metal layer 160a can be in contact with a top surface of the heat path change section 150. A top surface of the first metal layer 160a can be in contact with the second metal layer 160b.

[0128] However, the first metal layer 160a can be arranged such that it is spaced apart from the connecting line 140. Since the connecting line 140 is connected to the majority of lines 130 that supply pixel energy, and the first metal layer 160a is connected to the cathode electrode 117, a short circuit can occur if the connecting line 140 and the first metal layer 160a are electrically connected. Accordingly, the display device 100 according to one embodiment of the present disclosure can have a structural feature in which the first metal layer 160a is arranged at a distance from the connecting line 140.

[0129] The second metal layer 160b can be in contact with the first metal layer 160a and the cathode electrode 117 located between the first metal layer 160a and the cathode electrode 117. For example, the second metal layer 160b can be arranged on the planarization layer 113 and be in contact with the first metal layer 160a via a contact hole that penetrates the planarization layer 113, the passivation layer 111c, and the intermediate insulating layer 111b. The cathode electrode 117 can be arranged on the bank 115 and be in contact with the second metal layer 160b via a contact hole that penetrates the bank 115.

[0130] Therefore, the heat generated in the connecting line 140 is primarily transferred to the heat path changer section 150, which is spaced apart from the connecting line 140. The heat transferred to the heat path changer section 150 is secondarily transferred to the first metal layer 160a and the second metal layer 160b, and the heat transferred to the second metal layer 160b can finally be transferred to the cathode electrode 117. Accordingly, according to one embodiment of the present disclosure, the indicator device 100 can dissipate (or distribute) the heat generated in the connecting line 140 via the heat path changer section 150, the contact section 160, and the cathode electrode 117, thus preventing the polarization plate PP located below the heat path changer section 150 from melting.

[0131] Referring to Fig. 4 In a display device 100 according to an embodiment of the present disclosure, the plurality of contact sections 160 can have a first contact section 161.

[0132] The first contact section 161 can be arranged between the first connecting line 141 and the edge of the heat path change section 150. Here, the edge of the heat path change section 150 can represent an end of the heat path change section 150. Accordingly, the first contact section 161 can be arranged as shown in Fig. As shown in Figure 4, the first contact section 161 is arranged such that it partially surrounds the first connecting line 141. Accordingly, the first contact section 161 can prevent the heat generated by the first connecting line 141 from propagating outwards to the heat path change section 150. Therefore, according to one embodiment of the present disclosure, the indicator device 100 can prevent the majority of lines 130 from being damaged by heat.

[0133] The first contact section 161 is arranged on an outer side of the first connecting line 141 and can therefore be referred to as an outer heat-blocking barrier (or first heat-blocking barrier or first wall structure). The cross-sectional structure of the first contact section 161 corresponds to the structure of the one in Fig. 5 described contact section 160, which is why a description of it is omitted.

[0134] However, the first contact section 161 can be provided in a shape where one side is open. That is, the first contact section 161 does not have to be in a sealed (or closed) shape. As described above, to reduce heat generation, the connecting line 140 can be provided in an omega shape with a length extending upwards from Fig. 4 extends. Accordingly, the first contact section 161 can be provided in a shape with an open side in order not to interfere with (or come into contact with) the first connecting line 141 provided in an omega shape.

[0135] In the display device 100 according to an embodiment of the present disclosure, the plurality of contact sections 160 may further comprise a second contact section 162.

[0136] The second contact section 162 can be partially arranged on an inner surface of the first connecting line 141. According to one example, the second contact section 162 can be formed along a contour of the first connecting line 141, while being spaced a predetermined distance from the first connecting line 141. Therefore, as in Fig. As shown in Figure 4, the first connecting line 141 is partially arranged between the first contact section 161 and the second contact section 162. The cross-sectional structure of the second contact section 162 can be the same as the structure of the one shown in Figure 4. Fig. 5 described contact section 160. Accordingly, in the display device 100 according to an embodiment of the present disclosure, the heat generated in the first connecting line 141 can be transferred (or distributed) to the cathode electrode 117 not only via the first contact section 161, but also via the second contact section 162, so that the melting prevention effect of the polarization plate PP can be further improved. Since the second contact section 162 is arranged on the inside of the first connecting line 141, it can be referred to as an inner heat-blocking barrier (or second heat-blocking barrier or second wall structure).

[0137] However, the second contact section 162 can be provided in a dense (or closed) form. This serves to maximize the transfer of the heat generated by the first connecting line 141 without the second contact section 162 coming into contact with the first connecting line 141. That is, the second contact section 162 can be provided in a dense (or closed) form to increase the area opposite the first connecting line 141. Accordingly, as in Fig. As shown in Figure 4, the second contact section 162 is formed along a shape of the first connecting line 141 at a location spaced apart from the first connecting line 141, allowing the second contact section 162 to absorb most of the heat generated in the first connecting line 141. The second contact section 162 can transfer the heat absorbed by the first connecting line 141 to the cathode electrode 117. Therefore, according to one embodiment of the present disclosure, the indicator device 100 can further improve the heat dissipation efficiency through the second contact section 162, thus more effectively preventing melting of the polarization plate.

[0138] The first contact section 161 and the second contact section 162 can be arranged on the heat path change section 150. That is, the first contact section 161 and the second contact section 162 can be arranged so that they overlap the heat path change section 150. Accordingly, both the first contact section 161 and the second contact section 162 can transfer the heat transferred from the connecting line 140 to the heat path change section 150 to the cathode electrode 117.

[0139] If the first contact section 161 and / or the second contact section 162 are arranged at a distance from the heat path change section 150, the heat transfer efficiency to the cathode electrode 117 may be reduced. Therefore, according to one embodiment of the present disclosure, the indicator device 100 can minimize the reduction in heat transfer efficiency to the cathode electrode 117 by arranging the first contact section 161 and the second contact section 162 on the heat path change section 150, thereby maximizing the heat dissipation effect.

[0140] Referring to Fig. 4. The majority of contact sections 160 in the display device 100 according to an embodiment of the present disclosure may further comprise a third contact section 163 and a fourth contact section 164.

[0141] The third contact section 163 can be arranged on an inner side of the second contact section 162. According to one example, at least one third contact section 163 can be provided. As shown in Fig. As shown in Figure 4, the third contact section 163 can, for example, be provided in a numerical plurality, and the plurality of third contact sections 163 can be spaced apart from one another on the inside of the second contact section 162. The third contact sections 163 can be provided in at least one of the following shapes: dot, rectangle, and square. Accordingly, the plurality of third contact sections 163 can easily be provided on the inside of the second contact section 162 without interfering with each other.

[0142] Therefore, according to an embodiment of the present disclosure, the display device 100 is provided such that it has at least a third contact section 163 on the inside of the second contact section 162, so that a contact area between the heat path change section 150 and the cathode electrode 117 can be further increased and thus the heat dissipation effect can be further improved.

[0143] The fourth contact section 164 can be arranged on an outer side of the first contact section 161. According to one example, at least one fourth contact section 164 can be provided. For example, as shown in Fig. As shown in Figure 4, the fourth contact section 164 can be provided in a numerical plurality, and the plurality of fourth contact sections 164 can be spaced apart from one another on the outside of the first contact section 161. For example, the plurality of fourth contact sections 164 can be located on the left and right sides of the first contact section 161 according to Figure 4. Fig. The fourth contact sections 164 can be arranged in at least one of the following shapes: dot shape, rectangular shape, and square shape. Accordingly, the majority of fourth contact sections 164 can easily be arranged on the outside of the first contact section 161 without interfering with each other.

[0144] Therefore, according to an embodiment of the present disclosure, the display device 100 is provided such that it has at least a fourth contact section 164 on the outside of the first contact section 161, so that a contact area between the heat path change section 150 and the cathode electrode 117 can be maximized and thus the heat dissipation effect can be maximized.

[0145] It has been described above that the third contact section 163 and / or the fourth contact section 164 are provided in at least one of the shapes point, rectangle and square, but this is not limited and they can also be provided in other shapes as long as the contact area between the heat path change section 150 and the cathode electrode 117 can be increased.

[0146] With reference to Fig. 4. According to an embodiment of the present disclosure, the display device 100 may further comprise at least one sub-heat path change section 170 which partially overlaps with the second connecting line 142.

[0147] The sub-heat path change section 170 serves to dissipate heat generated by the second connecting line 142. For this purpose, the sub-heat path change section 170 can be made of a metallic material (or a material with high thermal conductivity). As shown in Fig. As shown in Figure 4, each of the plurality of sub-heat path change sections 170 is provided in a long rectangular shape in the first direction (Y-axis direction) so that it can partially overlap with the second connecting line 142, which is arranged in the second direction (X-axis direction). And as shown in Fig. As shown in Figure 5, the sub-heat path change section 170 can be arranged below the second connecting line 142. Therefore, each of the plurality of sub-heat path change sections 170 can block the heat diffusing from the second connecting line 142 to the polarization plate PP, thus preventing the polarization plate PP from melting. Furthermore, each of the plurality of sub-heat path change sections 170 is arranged to be in contact with a heat transfer section 180, so that heat absorbed by the second connecting line 142 can be transferred to the heat transfer section 180.

[0148] However, as in Fig. As shown in Figure 4, each of the plurality of sub-heat path change sections 170 must be arranged such that it does not overlap with the data line DL and / or the reference line RL. As shown in Fig. As shown in Figure 5, this is because the majority of sub-heat path change sections 170 are arranged on the same layer as the data line DL and / or the reference line RL. Accordingly, the display device 100 according to an embodiment of the present disclosure may have a structural feature in which at least one sub-heat path change section 170 is positioned such that it does not overlap with the data line DL and / or the reference line RL.

[0149] With reference to the Fig. 4 and Fig. 5. According to an embodiment of the present disclosure, the display device 100 may further comprise a heat transfer section 180 which connects at least one sub-heat path change section 170 and a heat path change section 150.

[0150] The heat transfer section 180 serves to transfer the heat transferred to at least one sub-heat path change section 170 to the heat path change section 150. For this purpose, the heat transfer section 180 can be made of a metallic material (or a material with high thermal conductivity). As shown in Fig. As shown in Figure 5, the heat transfer section 180 can be arranged on the same layer as the connecting line 140. The heat transfer section 180 can be formed together with the connecting line 140, so that it can be arranged on the same layer as the connecting line 140. For example, the heat transfer section 180 can be arranged between the buffer layer BL and the intermediate insulating layer 111b. One side of the heat transfer section 180 can be in contact with the sub-heat path change section 170 via a contact hole formed on the sub-heat path change section 170. The other side of the heat transfer section 180 can be in contact with the heat path change section 150 via a contact hole formed on the heat path change section 150.Accordingly, the heat transfer section 180 can transfer the heat transferred to at least one sub-heat path change section 170 to the heat path change section 150. The heat transferred to the heat path change section 150 can be transferred via the contact section 160 to the cathode electrode 117 and radiated (or distributed) via the cathode electrode 117.

[0151] Therefore, according to an embodiment of the present disclosure, the display device 100 can prevent the polarization plate PP from melting by discharging (or distributing) the heat generated by the first connecting line 141 and the second connecting line 142 to the cathode electrode 117 via the sub-heat path change section 170 and the heat path change section 150, and the lifetime can be improved due to the prevention of the polarization plate PP from melting, so that, compared to the total lifetime, low-energy operation is possible, thereby reducing energy consumption.

[0152] As in Fig. As shown in Figure 4, one side of each of the plurality of sub-heat path change sections 170 is connected to (or in contact with) the heat transfer section 180 arranged in the second direction (X-axis direction), so that it can be provided as a rake-shaped iron structure.

[0153] With reference to Fig. 5. At least one sub-heat path change section 170 is provided on the same layer as the majority of lines DL, so that it cannot overlap with the majority of lines DL. Additionally, as in Fig. As shown in Figure 5, the heat path change section 150 can also be provided on the same layer as the majority of lines DL. Accordingly, the display device 100 according to an embodiment of the present disclosure can have a structural feature in which the data line DL is arranged between at least one sub-heat path change section 170 and a heat path change section 150. In this case, as shown in Figure 5, the heat path change section 150 can be located on the same layer as the majority of lines DL. Fig. As shown in Figure 5, the heat transfer section 180 partially overlaps with the data line DL. However, this is not limited to this, and as shown in Figure 5, the heat transfer section 180 partially overlaps with the data line DL. Fig. As shown in Figure 4, some of the data lines from the majority of data lines DL can be arranged between the majority of sub-heat path change sections 170.

[0154] Referring again to Fig. 4, in the display device 100 according to an embodiment of the present disclosure, the first connecting line 141 can have a first sub-connecting line 141a and a second sub-connecting line 141b.

[0155] The first sub-connection line 141a can be connected to the second connection line 142. The second sub-connection line 141b can be connected to the first sub-connection line 141a. Therefore, the first sub-connection line 141a can be located closer to an edge of the heat path change section 150 than the second sub-connection line 141b.

[0156] As in Fig. As illustrated in Figure 4, the first sub-connection line 141a can be arranged between the second sub-connection line 141b and the second connection line 142. Additionally, the second sub-connection line 141b can be arranged such that it surrounds most of the second contact section 162 while being connected to the first sub-connection line 141a. Accordingly, most of the second sub-connection line 141b can be surrounded by the first contact section 161.

[0157] Since the second sub-connection line 141b is surrounded by the first contact section 161 while surrounding most of the second contact section 162, most of the second sub-connection line 141b can be arranged between the first contact section 161 (or the outer heat-blocking barrier) and the second contact section 162 (or the inner heat-blocking barrier), as shown in Fig. Figure 4 shows that, accordingly, the indicator device 100, according to one embodiment of the present disclosure, can prevent the heat generated in the second sub-connecting line 141b from propagating to other lines adjacent to the heat path change section 150 by arranging the first contact section 161 and the second contact section 162 such that they surround the inner and outer surfaces of the second sub-connecting line 141b. Furthermore, in the indicator device 100, according to one embodiment of the present disclosure, the first contact section 161 and the second contact section 162 are arranged such that they surround the inner and outer surfaces of the second sub-connecting line 141b, so that the heat generated in the second sub-connecting line 141b is additionally (e.g.,(without contact) can be transferred to the first contact section 161 and the second contact section 162, thus maximizing the heat dissipation effect through the cathode electrode 117.

[0158] With reference to Fig. 4 and Fig. 6. In the display device 100, according to one embodiment of the present disclosure, the second sub-connection line 141b can be provided with a width W1 that is narrower than the width W2 of the first sub-connection line 141a. If the width W1 of the second sub-connection line 141b is narrower than the width W2 of the first sub-connection line 141a, the current density in the second sub-connection line 141b can increase more than in the first sub-connection line 141a. Accordingly, the second sub-connection line 141b can generate more heat than the first sub-connection line 141a. As described above, most of the second sub-connection line 141b can be arranged between the first contact section 161 (or the outer heat-blocking barrier) and the second contact section 162 (or the inner heat-blocking barrier).Accordingly, even if the heat generation of the second sub-connecting line 141b increases more than that of the first sub-connecting line 141a, the heat dissipation effect can be improved by the cathode electrode 117, since the first contact section 161 and the second contact section 162 can each absorb heat from the inside and outside of the second sub-connecting line 141b, respectively.

[0159] Consequently, in the display device 100 according to one embodiment of the present disclosure, the width W1 of the second sub-connection line 141b is narrower than the width W2 of the first sub-connection line 141a, so that the heat generated in the connection line 140 can be induced in the second sub-connection line 141b and the heat induced in the second sub-connection line 141b can be transferred to the cathode electrode 117 via the first contact section 161 and the second contact section 162, which are arranged on the inside and outside of the second sub-connection line 141b, respectively. Therefore, in the display device 100 according to one embodiment of the present disclosure, the melting prevention of the polarization plate PP can be maximized.

[0160] Fig. 7 is a schematic cross-sectional view of the in Fig. 4 shown line III-III'.

[0161] With reference to Fig. 7. According to an embodiment of the present disclosure, the display device 100 may further comprise a common energy contact section EVCP.

[0162] The common energy contact section EVCP serves to apply the common energy supplied by the pad section PA to the cathode electrode 117. As in Fig. As shown in Figure 7, the common energy contact section EVCP can, for example, transfer the common energy applied to the heat path change section 150 to the cathode electrode 117 via the contact section 160.

[0163] As in Fig. As shown in Figure 4, the common energy contact section EVCP can be positioned higher than the first contact section 161 in the first direction (Y-axis direction). Accordingly, the common energy contact section EVCP can be located closer to the pad section PA than the first contact section 161. The heat path modification section 150 can be formed by extending from the heat transfer section 180 in the first direction (Y-axis direction) to the common energy contact section EVCP. Accordingly, the heat path modification section 150 can be connected to the cathode electrode 117 via the contact section 160 on the common energy contact section EVCP.

[0164] However, part of the heat path change section 150, which is located in the common energy contact section EVCP, can be connected to a common conductor of the pad section PA. Accordingly, the heat path change section 150 can function as a conductor that supplies common energy. As in Fig. As shown in Figure 7, the heat path change section 150 can be connected to the cathode electrode 117 via the first metal layer 160a and the second metal layer 160b in the common energy contact section EVCP. Therefore, the common energy supplied to the heat path change section 150 can be applied to the cathode electrode 117 via the first metal layer 160a and the second metal layer 160b.

[0165] As in Fig. As shown in Figure 7, an area where the second metal layer 160b and the cathode electrode 117 come into contact in the common energy contact section EVCP can be larger than an area where the second metal layer 160b and the cathode electrode 117 are in an area adjacent to the common energy contact section EVCP (e.g., an area that, according to Figure 7, Fig. 7 adjacent to the left side of the common energy contact section EVCP). Accordingly, most of the common energy applied by the pad section PA can be applied by the common energy contact section EVCP to the cathode electrode 117.

[0166] Consequently, the common energy contact section EVCP can apply most of the common energy to the cathode electrode 117 via the heat path change section 150 and the contact section 160, and can thus be referred to as a common energy supply section. Furthermore, the contact section 160 provided in the common energy contact section EVCP has the function of transferring common energy and can therefore be referred to as a common energy transfer section 160'.

[0167] Meanwhile, the heat path change section 150 can be configured to extend from the heat transfer section 180 in the first direction (Y-axis direction) to the common energy contact section EVCP. Accordingly, the heat path change section 150, which is located between the common energy contact section EVCP and the heat transfer section 180 in the first direction (Y-axis direction), can be connected to the cathode electrode 117 via the majority of contact sections 160.

[0168] For example, based on Fig. 7 The heat path change section 150, which extends to the left of a common energy contact section EVCP, is connected to the cathode electrode 117 via the plurality of contact sections 160. This structure can be referred to as a heat dissipation section, since it transfers heat from the heat path change section 150 to the cathode electrode 117 via the plurality of contact sections 160.

[0169] However, the majority of contact sections have 160, located on the left side of the common energy contact section EVCP in Fig. The components arranged in the 7th section have the function of transferring the heat from the heat path change section 150 to the cathode electrode 117 and can therefore be referred to as the heat path transfer section 160. Furthermore, the connection structure of the heat path change section 150, the contact section 160, and the cathode electrode 117 can be seen on the right side of the Fig. 5 can also be included in the heat dissipation section. Accordingly, the contact section 160, which includes the heat path change section 150 and the cathode electrode 117 on the right side of Fig. 5 connects, also to be included in the heat path transfer section 160".

[0170] As in Fig. As illustrated in Figure 4, the majority of contact parts 160 (e.g., a first contact section 161, a second contact section 162, a third contact section 163, and a fourth contact section 164) can be provided on the heat path change section 150, which is located below the common energy contact section EVCP. The majority of contact sections 160 (e.g., the first contact section 161, the second contact section 162, the third contact section 163, and the fourth contact section 164) can be the heat path transfer sections 160 contained within the heat dissipation section, as they transfer heat from the heat path change section 150 to the cathode electrode 117.

[0171] Therefore, according to one embodiment of the present disclosure, the display device 100 can apply most of the common energy from the common energy contact section EVCP to the cathode electrode 117 via the common energy transfer section 160' and can dissipate heat via the plurality of heat transfer sections 160" in a different area than the common energy contact section EVCP (e.g., an area below the common energy contact section EVCP with respect to Fig. 4) to the cathode electrode 117. Therefore, according to one embodiment of the present disclosure, the display device 100 can implement a heat dissipation structure via the cathode electrode 117 while applying a common energy to the cathode electrode 117.

[0172] However, as in Fig. Figure 7 shows the structure of each of the plurality of heat dissipation sections in the area that is not the common energy contact section EVCP (e.g., the area below the common energy contact section EVCP based on Fig. 4), identical to a structure of the common power supply section in the common power contact section EVCP, so that the common power supply can be applied to the cathode electrode 117 via the majority of heat dissipation sections.

[0173] In the above, the first contact section 161, the second contact section 162, the third contact section 163 and the fourth contact section 164 are all described as heat dissipation parts, but the present invention is not limited thereto.

[0174] According to one embodiment of the present disclosure, the display device 100 can use the first contact section 161, the second contact section 162, the third contact section 163 and the fourth contact section 164 as a heat dissipation section and / or common power supply section as required.

[0175] For example, the first contact section 161 and the second contact section 162 can be used as a heat dissipation section and the third contact section 163 and the fourth contact section 164 as a common power supply section.

[0176] Alternatively, the first contact section 161, the second contact section 162 and the third contact section 163 can be used as a heat dissipation section and the fourth contact section 164 as a common power supply section.

[0177] Alternatively, the first contact section 161, the second contact section 162 and the fourth contact section 164 can be used as a heat dissipation section and the third contact section 163 as a common power supply section.

[0178] In this way, in the display device 100 according to an embodiment of the present disclosure, if a heat dissipation function is more necessary than a common power supply, the majority of the majority of contact sections 160 can be used as a heat dissipation section, and conversely, the majority of the majority of contact sections 160 can be used as a common power supply section.

[0179] If, for example, a heat dissipation function is still required, most of the majority of contact sections 160 can be arranged close to the first connecting line 141. If, on the other hand, a common power supply function is still required, most of the majority of contact sections 160 can be arranged close to the common power contact section EVCP.

[0180] According to one embodiment of the present disclosure, the display device 100 can maximize the heat dissipation function using the cathode electrode 117 by arranging the plurality of contact sections 160 on the heat path change section 150. Alternatively, according to one embodiment of the present disclosure, the display device 100 can prevent a common energy drop applied to the cathode electrode 117 by arranging the plurality of contact sections 160 on the heat path change section 150.

[0181] The display device according to the present disclosure is designed such that the heating from the connecting line is distributed via the cathode electrode, thereby preventing the polarization plate from melting.

[0182] The display device according to the present disclosure is designed such that the heating is distributed over the cathode electrode, thereby reducing the peak temperature of the display panel.

[0183] Since the display device according to the present disclosure does not require any division (or separation) of the connecting line, vertical line discoloration can be prevented.

[0184] The display device according to the present disclosure can have an improved lifetime due to the prevention of melting of the polarization plate and can therefore be operated with less energy compared to its total lifetime, thereby reducing energy consumption.

Claims

[1] Display device (100), comprising: a substrate (110) with a display area (DA) in which a plurality of subpixels (SP) are arranged, and a non-display area (NDA) around the display area (DA); a plurality of lines (130) arranged in the non-display area (NDA) on the substrate (110) and connected to each of a plurality of tabs (120); a connecting line (140) that connects the majority of lines (130); and a heat path change section (150) that partially overlaps the connecting line (140), wherein the substrate (110) has a cathode electrode (117) which is arranged in the display area (DA) and a section of the non-display area (NDA), wherein the heat path change section (150) is connected to the cathode electrode (117). [2] Display device (100) according to claim 1, further comprising: a polarization plate (PP) arranged below the substrate (110), wherein the heat path change section (150) is arranged between the polarization plate (PP) and the connecting line (140). [3] Display device (100) according to claim 1 or 2, wherein the heat path change section (150) partially overlaps with both the cathode electrode (117) and the connecting line (140). [4] Display device (100) according to any one of claims 1 to 3, wherein the heat path change section (150) is arranged between outermost lines of the plurality of lines (130) which are connected to each of two different tabs of the plurality of tabs (120). [5] Display device (100) according to any one of claims 1 to 4, wherein the majority of tabs (120) have a first tab (121) and a second tab (122) arranged side by side, wherein the majority of lines (130) comprise a majority of first lines (131) connected to the first tab (121) and a majority of second lines (132) connected to the second tab (122), wherein the majority of first lines (131) have a first outermost line (131a) which is located closest to the majority of second lines (132), wherein the majority of second lines (132) have a second outermost line (132a) which is located closest to the first outermost line (131a), and wherein the heat path change section (150) is arranged between the first outermost line (131a) and the second outermost line (132a). [6] Display device according to any one of claims 1 to 5, wherein the heat path change section (150) comprises a metal material. [7] Display device (100) according to one of claims 1 to 6, wherein the heat path change section (150) is provided in a trapezoidal shape. [8] Display device (100) according to any one of claims 1 to 7, wherein the connecting line (140) has a first connecting line (141) and a second connecting line (142) which is connected to the first connecting line (141), wherein the first connecting line (141) overlaps the heat path change section (150) and the second connecting line (142) does not overlap the heat path change section (150). [9] Display device (100) according to claim 8, which further comprises a plurality of contact sections (160) connecting the heat path change section (150) and the cathode electrode (117). [10] Display device (100) according to claim 9, wherein each of the plurality of contact sections (160) comprises the following: a first metal layer (160a) arranged on the same layer as the connecting line (140) and in contact with the heat path change section (150); and a second metal layer (160b) between the first metal layer (160a) and the cathode electrode (117), and which is in contact with both the first metal layer (160a) and the cathode electrode (117). [11] Display device (100) according to claim 9 or 10, wherein the majority of contact sections (160) have a first contact section (161) arranged between the first connecting line (141) and an edge of the heat path change section (150), and wherein the first contact section (161) partially surrounds the first connecting line (141). [12] Display device (100) according to claim 11, wherein the majority of contact sections (160) further comprise a second contact section (162) which is partially arranged on an inside of the first connecting line (141), and wherein the first connecting line (141) is partially arranged between the first contact section (161) and the second contact section (162). [13] The display device (100) according to claim 12, wherein the second contact section (162) is provided in a closed form. [14] Display device (100) according to claim 12 or 13, wherein the first contact section (161) and the second contact section (162) are arranged on the heat path change section (150). [15] Display device (100) according to one of claims 12 to 14, wherein the plurality of contact sections (160) further comprise the following: at least one third contact section (163) arranged on an inner side of the second contact section (162); and at least one fourth contact section (164) arranged on an outside of the first contact section (161). [16] Display device (100) according to claim 15, wherein the third contact section (163) is provided in at least one of a dot shape and a square shape. [17] Display device (100) according to one of claims 8 to 16, which further comprises at least one sub-heat conduction change section (170) that partially overlaps the second connecting line (142). [18] Display device (100) according to claim 17, which further comprises a heat transfer section (180) connecting the at least one sub-heat path change section (170) and the heat path change section (150). [19] Display device (100) according to claim 18, wherein the heat transfer section (180) is arranged on the same layer as the connecting line (140). [20] Display device (100) according to one of claims 17 to 19, further comprising: a data line (DL) for supplying a control signal to each of the plurality of subpixels (SP), wherein the data line (DL) is arranged between the at least one sub-heat path change section (170) and the heat path change section (150). [21] Display device (100) according to one of claims 9 to 20, wherein the first connecting line (141) comprises the following: a first sub-connection line (141a) which is connected to the second connection line (142); and a second sub-connection line (141b) which is connected to the first sub-connection line (141a), where the width of the second sub-connection line (141b) is narrower than the width of the first sub-connection line (141a). [22] Display device (100) according to claim 21, wherein the majority of contact sections (160) have a first contact section (161) arranged between the first connecting line (141) and an edge of the heat path change section (150), and wherein the second sub-connection line (141b) is at least partially surrounded by the first contact section (161).

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