Display device

Abstract

A display device is provided. An embodiment of the display device can include a substrate defining a display area and a non-display area; a driving element on the display area; a first via layer on the driving element and the non-display area; a second via layer on the first via layer; a pixel electrode on the second via layer and overlapping the display area; an auxiliary electrode overlapping the non-display area; a pixel definition film on the second via layer and overlapping the pixel electrode; a plurality of organic film patterns overlapping the auxiliary electrode; an emission layer on the pixel electrode; a common electrode on the emission layer and the auxiliary electrode and connected to the auxiliary electrode, the auxiliary electrode including a plurality of electrode holes, and at least one of the plurality of organic film patterns including a pattern hole overlapping one of the plurality of electrode holes.

Description

Technical Field

[0001] This invention relates to display devices. Background Technology

[0002] The importance of display devices is increasing with the development of multimedia. Correspondingly, various types of display devices are being used, such as Liquid Crystal Displays (LCDs) and Organic Light Emitting Displays (OLEDs).

[0003] Organic light-emitting display devices (OLEDs) are self-emissive elements that emit their own light, offering advantages such as fast response time, high luminous efficiency, brightness, and wide viewing angle. OLEDs can include multiple pixels on a single panel. Each pixel can include organic light-emitting diodes (OLEDs) disposed on a substrate on which thin-film transistors are formed.

[0004] The display device described above may include multiple organic films. However, during the manufacturing process, these organic films may undergo electrode oxidation caused by gases generated during heat treatment. Therefore, problems such as poor display quality and reduced reliability exist in the display device. Summary of the Invention

[0005] The problem to be solved by the present invention is to provide a display device that can reduce the amount of outgassing from multiple organic films to prevent display defects.

[0006] The subject matter of this invention is not limited to the subject matter mentioned above. Those skilled in the art should be able to clearly understand any unmentioned or other technical subject matter through the following description.

[0007] An embodiment of a display device for addressing the aforementioned problem may include: a substrate defining a display area and a non-display area; a driving element located on the display area; a first via layer located on the driving element and the non-display area; a second via layer located on the first via layer; a pixel electrode located on the second via layer and overlapping the display area; an auxiliary electrode located on the second via layer and overlapping the non-display area; a pixel defining film located on the second via layer and overlapping the pixel electrode; a plurality of organic film patterns located on the second via layer and overlapping the auxiliary electrode; a light-emitting layer located on the pixel electrode; and a common electrode located on the light-emitting layer and the auxiliary electrode and connected to the auxiliary electrode, wherein the auxiliary electrode includes a plurality of electrode holes, and at least one of the plurality of organic film patterns includes a pattern hole overlapping one of the plurality of electrode holes.

[0008] Alternatively, the plurality of electrode holes may be through holes that penetrate the auxiliary electrode, and the patterned holes may be through holes that penetrate the organic film pattern.

[0009] Alternatively, at least one of the plurality of organic film patterns may surround one of the plurality of electrode holes, overlap the auxiliary electrode adjacent to the electrode hole, and be in contact with the upper surface of the auxiliary electrode.

[0010] Alternatively, at least one of the plurality of organic film patterns may overlap with one of the plurality of electrode holes and be in contact with the upper surface of the second through-hole layer through the electrode hole.

[0011] Alternatively, the patterned hole may overlap with the electrode hole but not with the auxiliary electrode.

[0012] Alternatively, the common electrode may be connected to the upper surface of the second through-hole layer through the patterned hole.

[0013] Alternatively, the plurality of organic film patterns may be spaced apart from each other, the spaced regions between the plurality of organic film patterns may overlap with the auxiliary electrode, and the common electrode may be connected to the upper surface of the auxiliary electrode through the spaced regions between the plurality of organic film patterns.

[0014] Alternatively, the second via layer may further include a first via that overlaps with the electrode via and the patterned via, wherein the side surface of the first via and the side surface of the patterned via are aligned and consistent with each other.

[0015] Alternatively, the common electrode may be connected to the upper surface of the first through-hole layer through the patterned hole and the first through-hole.

[0016] Alternatively, the first via layer may further include a second via overlapping the electrode hole, the pattern hole, and the first via, and the display device may further include an insulating layer located between the driving element and the first via layer.

[0017] Alternatively, the side surface of the second through hole may be aligned with the side surface of the first through hole.

[0018] Alternatively, the common electrode may be connected to the upper surface of the insulating layer through the patterned hole, the first through hole, and the second through hole.

[0019] Alternatively, the planar shape of the plurality of organic membrane patterns may be a closed-loop shape.

[0020] Alternatively, the plurality of organic film patterns and the pixel definition film may be located on the same layer and comprise the same material, and the auxiliary electrode and the pixel electrode may be located on the same layer and comprise the same material.

[0021] Alternatively, one of the plurality of organic film patterns may also include a pattern groove that overlaps with another of the plurality of electrode holes.

[0022] Additionally, one embodiment of the display device may include: a substrate defining a display area and a non-display area; a driving element located on the display area; a first via layer located on the driving element and the non-display area; a second via layer located on the first via layer; a pixel electrode located on the second via layer and overlapping the display area; an auxiliary electrode located on the second via layer and overlapping the non-display area; a pixel defining film located on the second via layer and overlapping the pixel electrode; a plurality of organic film patterns located on the second via layer and overlapping the auxiliary electrode; a light-emitting layer located on the pixel electrode; and a common electrode located on the light-emitting layer and the auxiliary electrode and connected to the auxiliary electrode, wherein the auxiliary electrode includes a plurality of electrode holes, and at least one of the plurality of organic film patterns includes a pattern groove overlapping one of the plurality of electrode holes.

[0023] Alternatively, the plurality of organic film patterns may each include pattern grooves, and the depth of the pattern grooves gradually increases as they move away from the display area.

[0024] Alternatively, the plurality of organic film patterns may each include pattern grooves, and the depth of the pattern grooves gradually increases as they move closer to the display area.

[0025] It may be that at least one of the plurality of organic film patterns covers the entirety of one of the plurality of electrode holes.

[0026] Specific details of other embodiments are included in the detailed description and accompanying drawings.

[0027] (Invention Effects)

[0028] According to one embodiment of the display device, the volume of the plurality of organic films disposed below the common electrode can be reduced to decrease the amount of gas generated in the plurality of organic films. Therefore, the oxidation of the common electrode due to gas emission can be reduced, thereby preventing a decrease in display quality.

[0029] The effects involved in each embodiment are not limited to those illustrated above, and this specification includes many more effects. Attached Figure Description

[0030] Figure 1 This is a plan view of a display device according to an embodiment.

[0031] Figure 2 This is an equivalent circuit diagram of a pixel of a display device according to one embodiment.

[0032] Figure 3 It is an enlarged representation Figure 1 Plan view of area A.

[0033] Figure 4 It is a schematic representation along Figure 3 A diagram of the cross-sectional structure of the intercept line I-I'.

[0034] Figure 5 It is a schematic representation Figure 4 A plan view of a portion of the common electrode contact area.

[0035] Figure 6 It is a schematic representation along Figure 5 The diagram shows the cross-sectional structure of the intercept line II-II'.

[0036] Figure 7 It means along Figure 3 Other embodiments of the display device involving the cut-off line I-I' are cross-sectional views.

[0037] Figure 8 It is a schematic representation Figure 7 A plan view of the common electrode contact area.

[0038] Figure 9 It is a schematic representation along Figure 8 A diagram of the cross-sectional structure of the intercept line III-III'.

[0039] Figure 10 and Figure 11 It is a schematic representation along Figure 8 A cross-sectional view of a display device according to another embodiment of the cut-off line III-III'.

[0040] Figure 12 It is a schematic representation along Figure 3 A cross-sectional view of a display device relating to another embodiment of the cut-off line I-I'.

[0041] Figure 13 It is a schematic representation Figure 12 A plan view of the common electrode contact area.

[0042] Figure 14 It is a schematic representation along Figure 13 A diagram of the cross-sectional structure of the intercept line IV-IV'.

[0043] Figure 15 It is a schematic representation along Figure 3 A cross-sectional view of a display device relating to another embodiment of the cut-off line I-I'.

[0044] Figure 16 It is a schematic representation Figure 15A plan view of the common electrode contact area.

[0045] Figure 17 It is a schematic representation along Figure 16 A diagram of the cross-sectional structure of the intercept line V-V'.

[0046] Figure 18 and Figure 19 These are schematic representations along Figure 16 A diagram of the cross-sectional structure of another embodiment of the intercept line V-V'.

[0047] (Symbol Explanation)

[0048] 1: Display device; 45: Second power line; VIA1: First through-hole layer; VIA2: Second through-hole layer; PXE: Pixel electrode; EML: Light-emitting layer; CME: Common electrode; APE: Auxiliary electrode; APH: Electrode hole; PDL: Pixel definition film; PDP: Organic film pattern; PDH1: Pattern hole; PDG: Pattern groove. Detailed Implementation

[0049] References and Appendix Figure 1 As will become clear from the detailed description of the embodiments described below, the advantages, features, and methods of achieving these advantages and features of the invention will become apparent. However, the invention is not limited to the embodiments disclosed below and may be implemented in various forms. The embodiments are provided merely to complete the disclosure of the invention and to fully inform those skilled in the art of the scope of the invention. The invention should be defined only by the scope of the claims.

[0050] The presence of elements or layers on other elements or layers includes not only cases where they are directly on other elements, but also cases where other layers or elements exist in between. Throughout this specification, the same symbol refers to the same constituent element. The shapes, sizes, ratios, angles, numbers, etc., disclosed in the drawings used to illustrate the various embodiments are illustrative, and the invention is not limited to the illustrated cases.

[0051] The specific embodiments are described below with reference to the accompanying drawings.

[0052] Figure 1 This is a plan view of a display device according to an embodiment.

[0053] Reference Figure 1The display device 1 described in one embodiment can be applied to smartphones, mobile phones, tablet PCs, PDAs (Personal Digital Assistants), PMPs (Portable Multimedia Players), televisions, game consoles, watch-type electronic devices, head-mounted displays, personal computer screens, laptops, car navigation systems, car dashboards, digital cameras, camcorders, external advertising boards, electronic displays, medical devices, examination devices, and various home appliances such as refrigerators and washing machines, or Internet of Things (IoT) devices. In this specification, a television is used as an example of a display device; however, a TV can have high resolution or ultra-high resolution such as HD, UHD, 4K, or 8K.

[0054] Furthermore, the display device 1 involved in each embodiment can be classified into various devices according to the display method. For example, the classification of display devices may include organic light-emitting display devices (OLED), inorganic light-emitting display devices (EL), quantum dot light-emitting display devices (QED), micro-LED display devices (micro-LED), nano-LED display devices (nano-LED), plasma display devices (PDP), field emission display devices (FED), cathode ray display devices (CRT), liquid crystal display devices (LCD), electrophoretic display devices (EPD), etc. Hereinafter, an organic light-emitting display device will be used as an example of a display device. Unless otherwise specified, the organic light-emitting display device applicable to the embodiments may sometimes be simply referred to as a display device. However, the embodiments are not limited to organic light-emitting display devices, and other display devices listed above or known in the art may also be applied within the scope of sharing the technical concept.

[0055] One embodiment of the display device 1 may have a square shape in a plan view, for example, it may have a rectangular shape. In the case that the display device 1 is a television, it may be configured with the long side in the horizontal direction. However, it is not limited to this, the long side may also be in the vertical direction, or it may be configured to be rotatable so that the long side can be changed to be in the horizontal or vertical direction.

[0056] Display device 1 may include a display area DPA and a non-display area NDA. The display area DPA may be an active area for displaying images. The display area DPA may have a rectangular shape in a plan view, similar to the overall shape of the display device 1, but is not limited to this.

[0057] The display area DPA may include multiple pixels PX. These pixels PX can be arranged in rows and columns. The shape of each pixel PX in a planar view can be rectangular or square, but is not limited to these; it can also be a rhomboid shape with each side inclined relative to one side of the display device 1. The multiple pixels PX can include pixels PX of various colors. For example, the multiple pixels PX may include red (first color) pixels PX, green (second color) pixels PX, and blue (third color) pixels PX, but is not limited to these. The pixels PX of different colors can be arranged alternately in a striped or pentile pattern.

[0058] A non-display area NDA can be configured around the display area DPA. The non-display area NDA can surround all or part of the display area DPA. The display area DPA can be rectangular in shape, and the non-display area NDA can be configured to be adjacent to the four sides of the display area DPA. The non-display area NDA can form the frame of the display device 1.

[0059] In the non-display area NDA, a driving circuit or driving element for driving the display area DPA can be configured. In one embodiment, in the short side of the display device 1 ( Figure 1 The non-display area NDA arranged adjacent to the bottom of the display device 1 can have a pad portion provided on the display substrate of the display device 1, and an external device EXD can be mounted on the pad electrode of the pad portion.

[0060] Examples of external devices (EXD) include connecting films, printed circuit boards, driver chips (DIC), connectors, and wiring connecting films. For instance, the driver chip (DIC) can be a data driving circuit that supplies data signals to each pixel (PX) via the data line (DTL). The external device (EXD) can supply a first power supply voltage, a reference voltage, and a second power supply voltage to the first power line (ELVDL), the reference voltage line (RVL), and the second power line (45) respectively via connecting wiring (40, 41, 42).

[0061] The second power line 45 can be configured in the non-display area NDA and surround the display area DPA. For example, the second power line 45 can surround the periphery of the remaining display area DPA except for the lower side of the display area DPA. The second power line 45 can supply a low potential voltage to the common electrode (i.e., cathode) of the light-emitting element of the pixel PX.

[0062] On the long side of the display device 1 ( Figure 1 The non-display area NDA (located adjacent to the left side of the display) can be configured with a scan drive unit SDR directly formed on the display substrate of the display device 1. The scan drive unit SDR is located in... Figure 1The configuration is shown as having a scan drive unit SDR, but the scan drive unit SDR may also be further configured in the non-display area NDA adjacent to the right side of the display device 1. However, it is not limited to this. The scan drive unit SDR can supply scan signals to each pixel PX through the scan line SCL.

[0063] The pixels PX of the aforementioned display device 1 will be described in detail below.

[0064] Figure 2 This is an equivalent circuit diagram of a pixel of a display device according to one embodiment.

[0065] Reference Figure 2 In one embodiment, each pixel PX of the display device 1 includes, in addition to the light-emitting element EMD, three transistors (DTR, STR1, STR2) and an energy storage capacitor CST.

[0066] The light-emitting element (EMD) emits light based on the current supplied through the driving transistor (DTR). The EMD can be implemented using organic light-emitting diodes (OLEDs), micro-LEDs, nano-LEDs, etc.

[0067] The pixel electrode (i.e., anode) of the light-emitting element EMD can be connected to the source electrode of the driving transistor DTR, and the common electrode (i.e., cathode) can be connected to the second power line ELVSL, wherein a low potential voltage (second power supply voltage) lower than the high potential voltage (first power supply voltage) of the first power line ELVDL is supplied to the second power line ELVSL.

[0068] The driving transistor DTR adjusts the current flowing from the first power line ELVDL, which supplies the first power supply voltage, to the light-emitting element EMD based on the voltage difference between the gate electrode and the source electrode. The gate electrode of the driving transistor DTR can be connected to the first source / drain electrode of the first switching transistor STR1, the source electrode can be connected to the pixel electrode of the light-emitting element EMD, and the drain electrode can be connected to the first power line ELVDL, which applies the first power supply voltage.

[0069] The first switching transistor STR1 is turned on by the scan signal of the scan line SCL, thereby connecting the data line DTL to the gate electrode of the driving transistor DTR. The gate electrode of the first switching transistor STR1 can be connected to the scan line SCL, the first source / drain electrode can be connected to the gate electrode of the driving transistor DTR, and the second source / drain electrode can be connected to the data line DTL.

[0070] The second switching transistor STR2 is turned on by the sensing signal on the sensing signal line SSL, thereby connecting the reference voltage line RVL to the source electrode of the driving transistor DTR. The gate electrode of the second switching transistor STR2 can be connected to the sensing signal line SSL, the first source / drain electrode can be connected to the reference voltage line RVL, and the second source / drain electrode can be connected to the source electrode of the driving transistor DTR.

[0071] In one embodiment, the first source / drain electrode of the first switching transistor STR1 and the second switching transistor STR2 can be the source electrode and the second source / drain electrode can be the drain electrode, but it is not limited to this and can also be the opposite.

[0072] An energy storage capacitor CST is formed between the gate and source electrodes of the driving transistor DTR. The energy storage capacitor CST stores the voltage difference between the gate voltage and the source voltage of the driving transistor DTR.

[0073] The driving transistor DTR, the first switching transistor STR1, and the second switching transistor STR2 can be formed using thin-film transistors. Additionally, in... Figure 2 The description focuses on the case where the driving transistor DTR, the first switching transistor STR1, and the second switching transistor STR2 are N-type MOSFETs (Metal Oxide Semiconductor Field Effect Transistors), but it is not limited to this. That is, the driving transistor DTR, the first switching transistor STR1, and the second switching transistor STR2 can be P-type MOSFETs, or they can be partially N-type MOSFETs and partially P-type MOSFETs.

[0074] Figure 3 It is shown in magnification Figure 1 Plan view of area A.

[0075] Reference Figure 3 Multiple pixels (PX) can be configured in the display area DPA. A second power line 45 can be configured in the non-display area NDA surrounding the display area DPA, such that the second power line 45 surrounds the display area DPA, and an auxiliary electrode APE connected to the second power line 45 can be configured. The second power line 45 and the auxiliary electrode APE can overlap each other. A second via layer VIA2 can be configured in the non-display area NDA adjacent to the display area DPA, and the second via layer VIA2 can be configured between the second power line 45 and the auxiliary electrode APE.

[0076] The auxiliary electrode APE may include multiple electrode holes APHs for discharging gases generated in the lower second via layer VIA2. A common electrode CME is configured to overlap with the auxiliary electrode APE, thereby enabling electrical connection between the common electrode CME and the auxiliary electrode APE. The common electrode CME can receive a low-potential second power supply voltage via a second power line 45 connected to the auxiliary electrode APE.

[0077] The following will refer to along Figure 3 The cross-sectional view along line I-I' illustrates the specific structure of the display device.

[0078] Figure 4 It is a schematic representation along Figure 3 A diagram of the cross-sectional structure of the intercept line I-I'. Figure 5 It is a schematic representation Figure 4 A plan view of a portion of the common electrode contact area. Figure 6 It is a schematic representation along Figure 5 The diagram shows the cross-sectional structure of the intercept line II-II'.

[0079] exist Figure 4 The example shown is a top-emission type display device, in which the light L is emitted in the opposite direction to the substrate 101 on which the light-emitting layer EML is formed. However, it is not limited to this; it can also be a bottom-emission type display device that emits light in the direction to the substrate 101 on which the light-emitting layer EML is formed, or a dual-emission type display device that emits light in both the direction to the substrate 101 and the opposite direction to the substrate 101.

[0080] Reference Figure 4 The display device 1 may include a substrate 101. The substrate 101 may be an insulating substrate. The substrate 101 may include a transparent material. For example, the substrate 101 may include a transparent insulating material such as glass or quartz. The substrate 101 may be a rigid substrate. However, the substrate 101 is not limited to this; it may also include plastics such as polyimide, and may have flexible properties that allow it to be bent, folded, or rolled.

[0081] In one embodiment, the display device 1 may include a display area DPA and a non-display area NDA on a substrate 101. A thin-film transistor (TFT) and a light-emitting element (EMD) may be disposed in the display area DPA. The non-display area NDA may be an area other than the display area DPA.

[0082] A buffer film 105 may be disposed on the substrate 101. The buffer film 105 may be disposed on one side of the substrate 101 to protect the thin-film transistor (TFT) and the light-emitting element (EMD) from moisture that permeates through the substrate 101, which has low moisture permeability. The buffer film 105 may be formed of a plurality of inorganic films stacked alternately. For example, the buffer film 105 may be formed of a multilayer film consisting of one or more inorganic films, such as a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer, stacked alternately. The buffer film 105 may also be omitted.

[0083] A thin-film transistor (TFT) can be configured as a driving element on the buffer film 105. The TFT can be configured within the display area DPA. The TFT may include a semiconductor layer 110, a first insulating layer 121, a second insulating layer 122, a third insulating layer 123, a first gate electrode 130, and a second gate electrode 140.

[0084] exist Figure 4 The example illustrates a case where a thin-film transistor (TFT) is formed with its gate electrodes (130, 140) located on the upper part of the semiconductor layer 110 as a top gate, but it is not limited to this. That is, a thin-film transistor TFT can also be formed with its gate electrodes (130, 140) located on the lower part of the semiconductor layer 110 as a bottom gate, or with both gate electrodes (130, 140) located on the upper and lower parts of the semiconductor layer 110 as a double gate.

[0085] For example, a semiconductor layer 110 of a thin-film transistor (TFT) can be disposed on the buffer film 105. The semiconductor layer 110 may include polycrystalline silicon, monocrystalline silicon, low-temperature polycrystalline silicon, amorphous silicon, or oxide semiconductor. A light-shielding layer for blocking external light incident from the semiconductor layer 110 can be formed between the buffer film 105 and the semiconductor layer 110.

[0086] A first insulating layer 121 may be disposed on the semiconductor layer 110. The first insulating layer 121 may be formed of an inorganic film, such as a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0087] A first gate electrode 130 and a first signal line 135 located away from the first gate electrode 130 can be disposed on the first insulating layer 121. The first gate electrode 130 may overlap with the semiconductor layer 110. The first signal line 135 may be a light-emitting line, which can control the first power line ELVDL to supply a first power supply voltage to achieve conduction and turn-off.

[0088] The first gate electrode 130 and the first signal line 135 can be formed as a single layer or multiple layers of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd) and copper (Cu) or alloys thereof.

[0089] A second insulating layer 122 may be disposed on the first gate electrode 130 and the first signal line 135. The second insulating layer 122 may be formed of an inorganic film, such as a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0090] A second gate electrode 140 may be disposed on the second insulating layer 122. The second gate electrode 140 may overlap with the first gate electrode 130 and the semiconductor layer 110. The second gate electrode 140 may be formed as a single layer or multiple layers of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd) and copper (Cu) or alloys thereof.

[0091] A third insulating layer 123 may be disposed on the second gate electrode 140. The third insulating layer 123 may be formed of an inorganic film, such as a silicon nitride layer, a silicon oxide nitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer.

[0092] The source electrode 151 (or drain electrode) and drain electrode 152 (or source electrode) of the thin-film transistor (TFT) can be disposed on the third insulating layer 123, and the second signal line 155 can be disposed separately from the source electrode 151 and drain electrode 152. The source electrode 151 and drain electrode 152 can be connected to the semiconductor layer 110 through contact holes penetrating the third insulating layer 123, the second insulating layer 122, and the first insulating layer 121. The second signal line 155 can be a scan line. The source electrode 151, drain electrode 152, and second signal line 155 can be formed as a single layer or multiple layers of a low-resistivity material, such as any one of aluminum (Al), gold (Au), and copper (Cu), or alloys thereof.

[0093] A first via layer VIA1 may be disposed on the source electrode 151, the drain electrode 152, and the second signal line 155. The first via layer VIA1 may be a planarization film used to planarize the high-low difference caused by the thin-film transistor (TFT). The first via layer VIA1 may include organic insulating materials such as polyacrylate resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, unsaturated polyester resin, polyphenylene ethers resin, polyphenylene sulfide resin, or benzocyclobutene (BCB).

[0094] A connection electrode 162 and a third signal line 164 can be configured on the first via layer VIA1. The connection electrode 162 can be configured on the first via layer VIA1 to connect the drain electrode 152 (or source electrode) to the pixel electrode PXE described later. The connection electrode 162 can be connected to the drain electrode 152 (or source electrode) through a contact hole formed in the first via layer VIA1. The third signal line 164 can be a data line (…). Figure 1 DTL) and / or the first power line ( Figure 1 (ELVDL). The connecting electrode 162 and the third signal line 164 can be formed as a single layer or multiple layers of a low-resistance material, such as any one of aluminum (Al), gold (Au) and copper (Cu) or alloys thereof.

[0095] A second via layer VIA2 can be disposed on the connecting electrode 162 and the third signal line 164. The second via layer VIA2 can be a planarization film that insulates the connecting electrode 162 from the third signal line 164 and is used to planarize the height difference at the bottom. The second via layer VIA2 can include organic insulating materials such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, unsaturated polyester resin, polyphenylene ether resin, polyphenylene sulfide resin, or benzocyclobutene (BCB).

[0096] In one embodiment, by forming a first via layer VIA1 and a second via layer VIA2, the second signal line 155 and the third signal line 164 can be formed on layers different from each other. Furthermore, by forming the second signal line 155 and the third signal line 164 on different layers using a low-resistance material such as aluminum, signal delay can be prevented.

[0097] A light-emitting element (EMD) can be disposed on the second via layer VIA2. The EMD can be disposed within the display area DPA. The EMD may include a pixel electrode (PXE), a light-emitting layer (EML), and a common electrode (CME).

[0098] Specifically, a pixel electrode PXE can be disposed on the second via layer VIA2. The pixel electrode PXE can be the first electrode of the light-emitting element EMD, such as the anode. The pixel electrode PXE can be connected to the connection electrode 162 through a contact hole penetrating the second via layer VIA2, thereby connecting to the drain electrode 152 (or source electrode) of the thin-film transistor TFT.

[0099] In a front-emitting structure where light is emitted in the direction of the common electrode CME based on the light-emitting layer EML, the pixel electrode PXE can be formed from a single layer of silver (Ag), molybdenum (Mo), titanium (Ti), copper (Cu), or aluminum (Al), or from a highly reflective metallic material such as an aluminum-titanium stack (Ti / Al / Ti), a silver-ITO stack (ITO / Ag / ITO), an APC alloy, or an APC alloy-ITO stack (ITO / APC / ITO). The APC alloy is an alloy of silver (Ag), palladium (Pd), and copper (Cu).

[0100] As another example, in a back-emitting structure where light is emitted in the direction of the pixel electrode PXE based on the emissive layer EML, the pixel electrode PXE can be formed of a transparent conductive material such as ITO or IZO, or a semi-transmissive conductive material such as magnesium (Mg), silver (Ag), or an alloy of magnesium (Mg) and silver (Ag). In this case, when the pixel electrode PXE is formed of a semi-transmissive conductive material, the light extraction efficiency can be improved by using a microcavity.

[0101] A pixel definition film (PDL) can be disposed on the pixel electrode (PXE). The PDL can be disposed on the pixel electrode (PXE) and may include an opening that exposes the pixel electrode (PXE). The PDL may include organic insulating materials such as polyacrylate resin, epoxy resin, phenolic resin, polyamide resin, polyimide resin, unsaturated polyester resin, polyphenylene ether resin, polyphenylene sulfide resin, or benzocyclobutene (BCB).

[0102] A spacer 170 can be disposed on the pixel-defining film (PDL). The spacer 170 serves to maintain the spacing between itself and the structure disposed above it during the manufacturing process. In one embodiment, the pixel-defining film (PDL) and the spacer 170 can be formed as a single body. In this case, an organic material can be coated, and a half-tone mask can be used to form the pixel-defining film (PDL) and the spacer 170 as a single body. However, this embodiment is not limited to this; the pixel-defining film (PDL) and the spacer 170 can also be formed separately.

[0103] An emissive layer (EML) can be disposed on the pixel electrode (PXE) exposed by the pixel definition film (PDL). The EML may include an organic material layer. The organic material layer of the EML may include an organic light-emitting layer, and may also include a hole injection / transport layer and / or an electron injection / transport layer. In one embodiment, the EML may have a tandem structure comprising a plurality of organic light-emitting layers overlapped in the thickness direction and a charge generation layer disposed therebetween. The overlapped organic light-emitting layers may emit light of the same wavelength, but may also emit light of different wavelengths. At least a portion of the layer may be separated from the same layer of adjacent pixels.

[0104] A common electrode CME can be configured on the light-emitting layer EML. The common electrode CME can be the second electrode of the light-emitting element EMD, such as a cathode. The common electrode CME can be formed together in each pixel. In one embodiment, in the previous light-emitting structure, the common electrode CME can be formed of a transparent conductive material such as ITO or IZO, or a semi-transmissive conductive material such as magnesium (Mg), silver (Ag), or an alloy of magnesium (Mg) and silver (Ag). When the common electrode CME is formed of a semi-transmissive conductive material, the light extraction efficiency can be improved by using a microcavity.

[0105] In the lower light-emitting structure, the common electrode CME can be formed by a single layer of aluminum (Al), molybdenum (Mo), titanium (Ti), copper (Cu), or silver (Ag), or by a highly reflective metallic material such as an aluminum-titanium stack (Ti / Al / Ti), a silver-ITO stack (ITO / Ag / ITO), an APC alloy, or an APC alloy-ITO stack (ITO / APC / ITO).

[0106] On the other hand, a common electrode contact (CCA) can be disposed in the non-display area NDA of the substrate 101. The common electrode contact (CCA) can be the area where the common electrode (CME) contacts the auxiliary electrode (APE).

[0107] Specifically, a second power line 45 can be disposed on the third insulating layer 123 of the substrate 101. The second power line 45 can be disposed on the same layer as the source electrode 151 (or drain electrode) and can be formed of the same material. A portion of the second power line 45 can overlap with the first via layer VIA1. In this embodiment, the case where the second power line 45 is disposed on the same layer as the source electrode 151 (or drain electrode) is illustrated, but it is not limited to this; it can be disposed on the same layer as the third signal line 164, the second gate electrode 140, or the first gate electrode 130.

[0108] A first via layer VIA1 and a second via layer VIA2 may be sequentially disposed on the third insulating layer 123. The first via layer VIA1 and the second via layer VIA2 may extend from the display area DPA. The first via layer VIA1 and the second via layer VIA2 may be disposed only in a portion of the non-display area NDA. For example, the first via layer VIA1 and the second via layer VIA2 may be disposed along the direction toward the display area DPA, with reference to the second power line 45. The first via layer VIA1 and the second via layer VIA2 may be disposed in the direction toward the non-display area NDA without extending beyond the second power line 45. In this embodiment, the first via layer VIA1 and the second via layer VIA2 are illustrated as being configured to cover a portion of the second power line 45, but this is not a limitation; they may also cover the entire second power line 45 and extend further into the non-display area NDA.

[0109] An auxiliary electrode APE can be disposed on the second via layer VIA2. The auxiliary electrode APE can be disposed on the same layer as the pixel electrode PXE of the light-emitting element EMD, and can include the same material. As an example, the auxiliary electrode APE can be formed of ITO / Ag / ITO.

[0110] The auxiliary electrode APE can extend along the sides of the first via layer VIA1 and the second via layer VIA2 to connect to the second power line 45. In one embodiment, the auxiliary electrode APE can be directly connected to the second power line 45. In this embodiment, the case where the auxiliary electrode APE extends along the sides of the first via layer VIA1 and the second via layer VIA2 to connect to the second power line 45 is illustrated, but it is not limited to this. The auxiliary electrode APE can also be connected to the second power line 45 through contact holes formed in the first via layer VIA1 and the second via layer VIA2.

[0111] The auxiliary electrode APE overlapping the second via layer VIA2 may include multiple electrode holes (APHs). These multiple APHs may be through-holes penetrating the auxiliary electrode APE. The multiple APHs are provided for outgassing, allowing some of the gases generated during heat treatment in the first via layer VIA1 and the second via layer VIA2 during the manufacturing process of the display device. The gases generated in the first via layer VIA1 and the second via layer VIA2 may degrade the light-emitting layer (EML) or oxidize the common electrode (CME), thereby damaging the light-emitting element (EMD). Therefore, in this embodiment, by having multiple APHs on the auxiliary electrode APE, damage to the light-emitting element (EMD) can be prevented.

[0112] like Figures 4 to 6 As shown, an organic film pattern PDP can be disposed on the auxiliary electrode APE and the second via layer VIA2. The organic film pattern PDP can be disposed on the same layer as the pixel definition film PDL and can be formed from the same material as the pixel definition film PDL. Multiple organic film pattern PDPs can be formed, thereby respectively covering multiple electrode holes (APHs) of the auxiliary electrode APE. The organic film pattern PDP can cover the edge positions of the auxiliary electrode APE, which serve as sidewalls of the electrode holes (APHs). In one embodiment, the auxiliary electrode APE can be formed of ITO / Ag / ITO, and silver (Ag) corrosion may occur on the sides of the auxiliary electrode APE due to the etching solution. Therefore, the organic film pattern PDP can cover the edge positions of the auxiliary electrode APE adjacent to the electrode holes (APHs) and can overlap with the edge positions of the auxiliary electrode APE.

[0113] The spacer regions (PGAs) separating each organic film pattern PDP can overlap with the auxiliary electrode (APE). The spacer regions (PGAs) separating each organic film pattern PDP can be smaller than the width of the auxiliary electrode (APE) disposed between each electrode aperture (APH). As described above, the organic film pattern PDP covers the edge positions of the electrode aperture (APH) and the auxiliary electrode (APE) adjacent to the electrode aperture (APH), therefore the spacer regions (PGAs) separating each organic film pattern PDP can be smaller than the width of the auxiliary electrode (APE).

[0114] A common electrode CME can be configured on the organic film pattern PDP and the auxiliary electrode APE. The common electrode CME can be configured to extend from the display area DPA to the non-display area NDA. The common electrode CME can be connected to the auxiliary electrode APE to prevent voltage drop and can be supplied with a second power supply voltage.

[0115] like Figures 4 to 6As shown, the common electrode CME can be connected to the auxiliary electrode APE in the PGA spacer region where the organic film pattern PDPs are separated from each other. The common electrode CME can be directly connected to the upper surface of the auxiliary electrode APE along the side of each organic film pattern PDP. The common electrode CME can contact the auxiliary electrode APE at multiple locations, such as the PGA spacer region where the organic film pattern PDPs are separated from each other, thereby reducing the contact resistance between the common electrode CME and the auxiliary electrode APE. The outer side of the common electrode CME can be disposed on the organic film pattern PDP and can overlap with the organic film pattern PDP.

[0116] On the other hand, such as Figures 4 to 6 As described above, the display device 1 shown may include two via layers, such as a first via layer VIA1 and a second via layer VIA2, to form a low-resistance third signal line 164. The first via layer VIA1 and the second via layer VIA2 have a very high venting volume. Furthermore, the organic film pattern PDP disposed below the common electrode CME may also vent. Therefore, the increased venting volume generated by the first via layer VIA1, the second via layer VIA2, and the organic film pattern PDP may lead to oxidation of the common electrode CME, resulting in display defects.

[0117] The following describes a display device that can reduce the amount of gas emitted to prevent display defects caused by oxidation of the common electrode.

[0118] Figure 7 This is a cross-sectional view illustrating a display device according to an embodiment. Figure 8 It is a schematic representation Figure 7 A plan view of the common electrode contact area. Figure 9 It is a schematic representation along Figure 8 A diagram of the cross-sectional structure of the intercept line III-III'.

[0119] Reference Figures 7 to 9 In this embodiment, the display device 1 may include an auxiliary electrode (APE), an organic film pattern (PDP), and a common electrode (CME) at the common electrode contact portion (CCA). In particular, compared with the aforementioned... Figures 4 to 6 The difference in the embodiments lies in that the organic film pattern PDP includes patterned holes that overlap with the electrode holes APH, while the rest of the configuration is substantially the same or similar. Therefore, repeated descriptions are omitted, and the description focuses on the differences.

[0120] like Figures 7 to 9 As shown, an auxiliary electrode APE can be disposed on the second via layer VIA2 in the non-display area NDA. Multiple electrode holes APH can be formed on the auxiliary electrode APE.

[0121] Multiple organic film pattern PDPs can be configured on the auxiliary electrode APE, covering and overlapping multiple electrode holes APHs of the auxiliary electrode APE. The organic film pattern PDPs can cover and overlap the edge positions of the auxiliary electrode APE adjacent to the electrode holes APHs.

[0122] In one embodiment, the organic film pattern PDPs can be configured to be spaced apart from each other, and the gap region PGA between the organic film pattern PDPs can overlap with the auxiliary electrode APE. The gap region PGA between the organic film pattern PDPs can be smaller than the width APW of the auxiliary electrode APE disposed between the electrode holes APHs.

[0123] like Figures 7 to 9 As shown, the organic film patterned PDP may include a patterned hole PDH1 that overlaps with the electrode aperture APH of the auxiliary electrode APE. The patterned hole PDH1 may penetrate the organic film patterned PDP to expose the upper surface of the second via layer VIA2 disposed in the lower part of the organic film patterned PDP. The patterned hole PDH1 may overlap with the electrode aperture APH, but not with the auxiliary electrode APE.

[0124] In one embodiment, the patterned aperture PDH1 of the organic film patterned PDP may be a structure in which a portion of the organic film patterned PDP has been removed to reduce the volume of the organic film patterned PDP. Reducing the volume of the organic film patterned PDP can decrease the amount of gas generated in the organic film patterned PDP, thereby preventing display defects caused by oxidation of the common electrode CME.

[0125] The patterned aperture PDH1 of the organic film patterned PDP can be configured separately from the adjacent auxiliary electrode APE and can be made not to overlap with the auxiliary electrode APE. The width PDH1W of the patterned aperture PDH1 of the organic film patterned PDP can be smaller than the width APHW of the electrode aperture APH of the auxiliary electrode APE. As mentioned earlier, if the side of the auxiliary electrode APE is exposed, silver (Ag) corrosion may occur on the side of the auxiliary electrode APE due to the etching solution. To prevent silver (Ag) corrosion, the organic film patterned PDP can cover the edge of the auxiliary electrode APE adjacent to the electrode aperture APH. Therefore, the width PDH1W of the patterned aperture PDH1 of the organic film patterned PDP can be formed to be smaller than the width APHW of the electrode aperture APH of the auxiliary electrode APE.

[0126] In one embodiment, a predetermined first interval G1 may be present between one side of the organic film pattern PDP, such as the sidewall of the organic film pattern PDP forming the patterned hole PDH1, and one side of the auxiliary electrode APE. The first interval G1 between the one side of the organic film pattern PDP and the one side of the auxiliary electrode APE may be at least 4 μm. Additionally, a predetermined second interval G2 may be present between the other side of the organic film pattern PDP, such as the other side of the organic film pattern PDP overlapping the auxiliary electrode APE, and one side of the auxiliary electrode APE. The second interval G2 between the other side of the organic film pattern PDP and one side of the auxiliary electrode APE may be at least 4 μm. As described above, in order to make the organic film pattern PDP cover the side of the auxiliary electrode APE, the organic film pattern PDP may be formed with a distance of at least 4 μm from one side of the auxiliary electrode APE (G1, G2). In one embodiment, the width of the organic film pattern PDP may be at least 8 μm.

[0127] In one embodiment, the planar shape of the organic film patterned PDP can be formed to surround the electrode aperture APH of the auxiliary electrode APE. For example, the planar shape of the organic film patterned PDP can be formed as a closed loop shape. Figure 8 The illustration shows a case where the planar shape of the organic film pattern PDP is a square closed-loop shape, but it is not limited to this; it can also be formed from polygons such as circles or triangles. Furthermore, the planar shape of the organic film pattern PDP in this embodiment can be any shape, as long as it can be formed similarly to the planar shape of the electrode aperture APH of the auxiliary electrode APE.

[0128] In one embodiment, the planar shape of the patterned aperture PDH1 of the organic film patterned PDP can be formed in a square shape, similar to the planar shape of the organic film patterned PDP. As long as the organic film patterned PDP at least covers the edge of the auxiliary electrode APE, the patterned aperture PDH1 of the organic film patterned PDP can be formed with the largest possible area. Therefore, the planar shape of the patterned aperture PDH1 can be square, similar to the planar shape of the organic film patterned PDP. Figure 8 The diagram shows a case where the planar shape of the patterned aperture PDH1 of the organic membrane patterned PDP is square, but it is not limited to this and can also be formed by polygons such as circles or triangles.

[0129] like Figures 7 to 9 The illustration shows a one-to-one correspondence between the patterned apertures PDH1 of the organic film patterned PDP and the electrode apertures APH of the auxiliary electrode APE. However, the patterned apertures PDH1 of the organic film patterned PDP only need to overlap with the electrode apertures APH of the auxiliary electrode APE, and can also be formed by two or more of them.

[0130] In one embodiment, the organic film pattern PDP can be directly connected to the upper surface of the auxiliary electrode APE overlapping with the organic film pattern PDP and the upper surface of the second via layer VIA2 in the region overlapping with the electrode hole APH. That is, the organic film pattern PDP can be connected to the upper surface of the second via layer VIA2 exposed by the electrode hole APH through the electrode hole APH.

[0131] like Figures 7 to 9 As shown, a common electrode CME can be disposed on the organic film pattern PDP and the auxiliary electrode APE. The common electrode CME can be connected to the auxiliary electrode APE in the spacer region PGA where each organic film pattern PDP is separated from the others. The common electrode CME can be directly connected to the upper surface of the auxiliary electrode APE along the side of each organic film pattern PDP.

[0132] In one embodiment, the common electrode CME can be directly connected to the upper surface of the second via layer VIA2 exposed by the patterned holes PDH1 of the organic film patterned PDP. In another embodiment, the common electrode CME can be connected to the side of the patterned holes PDH1 of the organic film patterned PDP and extend along the side, thereby directly connecting to the upper surface of the second via layer VIA2.

[0133] As described above, the display device according to one embodiment can reduce the volume of the organic film patterned PDP by forming a patterned hole PDH1 that overlaps with the electrode hole APH. Therefore, the amount of gas generated in the organic film patterned PDP can be reduced to prevent oxidation of the common electrode CME, thereby preventing display defects.

[0134] Figure 10 and Figure 11 It is a schematic representation along Figure 8 A cross-sectional view of a display device of another embodiment with cut-off line III-III'.

[0135] Reference Figure 10 and Figure 11 The display device 1 involved in this embodiment may include a first through-hole layer VIA1, a second through-hole layer VIA2, an auxiliary electrode APE, an organic film pattern PDP, and a common electrode CME. In particular, Figure 10 The embodiments are the same as those described above. Figures 7 to 9 The difference in the embodiment is that a first through-hole VIH1 is formed in the second through-hole layer VIA2. Additionally, Figure 11 Implementation examples and Figures 7 to 10 The difference in the embodiment is that a second through-hole VIH2 is formed in the first through-hole layer VIA1, and a first through-hole VIH1 is formed in the second through-hole layer VIA2. The rest of the configuration is substantially the same or similar. Therefore, repeated descriptions are omitted, and the description focuses on the differences.

[0136] Reference Figure 10 In one embodiment, the display device 1 may include a first via VIH1 in the second via layer VIA2. The first via VIH1 may overlap with the electrode hole APH of the auxiliary electrode APE and the pattern hole PDH1 of the organic film pattern PDP. In one embodiment, the first via VIH1 may be formed continuously with the pattern hole PDH1 of the organic film pattern PDP. For example, the side surface of the first via VIH1 may be aligned with the side surface of the pattern hole PDH1 of the organic film pattern PDP.

[0137] As previously mentioned, the second via layer VIA2 can be a layer that generates gas. In this embodiment, by forming a first via VIH1 in the second via layer VIA2, the volume of the second via layer VIA2 can be reduced, thereby reducing the amount of gas generated in the second via layer VIA2.

[0138] In one embodiment, the common electrode CME can be connected to the side of the patterned hole PDH1 of the organic film patterned PDP and to the side of the first through hole VIH1 of the second through hole layer VIA2 along the side. The common electrode CME can be directly connected to the upper surface of the first through hole layer VIA1 exposed by the first through hole VIH1.

[0139] Reference Figure 11 The second via layer VIA2 may include a first via VIH1, and the first via layer VIA1 may include a second via VIH2. The second via VIH2 may overlap with the electrode hole APH of the auxiliary electrode APE, the pattern hole PDH1 of the organic film pattern PDP, and the first via VIH1 of the second via layer VIA2. In one embodiment, the second via VIH2 may be formed continuously with the first via VIH1 of the second via layer VIA2. For example, the side surface of the second via VIH2 may be aligned with the side surface of the first via VIH1.

[0140] As previously mentioned, the first through-hole layer VIA1 can be a layer that generates gas. In this embodiment, the amount of gas generated in the first through-hole layer VIA1 and the second through-hole layer VIA2 can be reduced by forming the first through-hole VIH1 in the second through-hole layer VIA2 and the second through-hole VIH2 in the first through-hole layer VIA1.

[0141] In one embodiment, the common electrode CME can be connected to the side of the patterned hole PDH1 of the organic film patterned PDP, thereby connecting to the side of the first through hole VIH1 of the second through hole layer VIA2 along the side. Alternatively, the common electrode CME can be connected to the side of the second through hole VIH2 of the first through hole layer VIA1, thereby directly connecting to the upper surface of the third insulating layer 123 exposed by the second through hole VIH2.

[0142] Figure 12 It is a schematic representation along Figure 3 A cross-sectional view of a display device relating to another embodiment of the cut-off line I-I'. Figure 13 It is a schematic representation Figure 12 A plan view of the common electrode contact area. Figure 14 It is a schematic representation along Figure 13 A diagram of the cross-sectional structure of the intercept line IV-IV'.

[0143] Reference Figures 12 to 14 The display device 1 involved in this embodiment may include an auxiliary electrode APE, an organic film pattern PDP, and a common electrode CME in the common electrode contact portion CCA. In particular, with... Figures 4 to 11 The difference between the various embodiments lies in the presence of patterned grooves within the organic film pattern PDP that overlap with the electrode aperture APH; the remaining configurations are substantially the same or similar. Therefore, repeated descriptions are omitted, and the description focuses on the key differences.

[0144] like Figures 12 to 14 As shown, the organic film pattern PDP may include a patterned groove PDG that overlaps with the electrode aperture APH of the auxiliary electrode APE. The patterned groove PDG may be a groove recessed to a predetermined depth from the surface of the organic film pattern PDP.

[0145] In one embodiment, the patterned groove PDG of the organic film patterned PDP may be a structure in which a portion of the organic film patterned PDP is removed to reduce the volume of the organic film patterned PDP. Reducing the volume of the organic film patterned PDP can reduce the amount of gas generated in the organic film patterned PDP, thereby preventing display defects caused by oxidation of the common electrode CME.

[0146] For the patterned groove PDG of the organic film patterned PDP, since the organic film patterned PDP is not completely removed, the organic film patterned PDP can cover the entire electrode aperture APH. The patterned groove PDG of the organic film patterned PDP may not overlap with the adjacent auxiliary electrode APE. The width PDGW of the patterned groove PDG of the organic film patterned PDP can be less than or equal to the width APHW of the electrode aperture APH of the auxiliary electrode APE. The patterned groove PDG does not expose the side of the auxiliary electrode APE, and therefore can have the same width as the electrode aperture APH of the auxiliary electrode APE. However, this embodiment is not limited to this; since the organic film patterned PDP can cover the side of the auxiliary electrode APE, the width PDGW of the patterned groove PDG can be greater than the width APHW of the electrode aperture APH.

[0147] In one embodiment, the patterned groove PDG of the organic film patterned PDP can have a predetermined depth GH. The depth GH of the patterned groove PDG can have any depth as long as the underlying second via layer VIA2 is not exposed. In one embodiment, by configuring the depth GH of the patterned groove PDG to be on the same line as the upper surface of the auxiliary electrode APE, the patterned groove PDG can be formed with the same exposure amount in the process of forming the organic film patterned PDP, which is therefore advantageous in terms of process.

[0148] In one embodiment, the planar shape of the patterned groove PDG of the organic film patterned PDP can be formed by a square shape, similar to the planar shape of the organic film patterned PDP. Figure 13 The diagram shows a case where the planar shape of the patterned groove PDG of the organic membrane patterned PDP is square, but it is not limited to this and can also be formed by polygons such as circles or triangles.

[0149] like Figures 12 to 14 The illustration shows a one-to-one correspondence between the patterned grooves (PDG) of the organic film patterned PDP and the electrode holes (APH) of the auxiliary electrode (APE). However, the patterned grooves (PDG) of the organic film patterned PDP only need to overlap with the electrode holes (APH) of the auxiliary electrode (APE), and can be formed by two or more of them.

[0150] like Figure 12 and Figure 14 As shown, the common electrode CME can be disposed on the patterned groove PDG of the organic film patterned PDP. In one embodiment, the common electrode CME can be directly connected to the side and bottom surfaces of the patterned groove PDG.

[0151] As described above, the display device according to one embodiment can form a patterned groove PDG of an organic film patterned PDP that overlaps with the electrode aperture APH, thereby reducing the volume of the organic film patterned PDP. Therefore, the amount of gas generated in the organic film patterned PDP can be reduced to prevent oxidation of the common electrode CME, thereby preventing display defects.

[0152] Figure 15 It is a schematic representation along Figure 3 A cross-sectional view of a display device relating to another embodiment of the cut-off line I-I'. Figure 16 It is a schematic representation Figure 15 A plan view of the common electrode contact area. Figure 17 It is a schematic representation along Figure 16 The cross-sectional structure diagram of the intercept line V-V'. Figure 18 and Figure 19 These are schematic representations along Figure 16 A diagram of the cross-sectional structure of another embodiment of the intercept line V-V'.

[0153] Reference Figures 15 to 17 The display device 1 involved in this embodiment may include an auxiliary electrode APE, an organic film pattern PDP, and a common electrode CME in the common electrode contact portion CCA. In particular, compared with the aforementioned... Figures 12 to 14 The difference between the various embodiments lies in that the organic film patterned PDP can have patterned grooves and patterned holes that overlap with the electrode holes (APH). Additionally, Figure 18 and Figure 19 Each with the aforementioned Figure 17 The difference lies in the depth of the pattern grooves. The rest of the composition is essentially the same or similar. Therefore, repeated explanations will be omitted, and the explanation will focus on the key differences.

[0154] like Figures 15 to 17 As shown, the organic film pattern PDP may include a patterned groove PDG and a patterned hole PDH1 that overlap with the electrode hole APH of the auxiliary electrode APE.

[0155] In one embodiment, one organic film patterned PDP may have a patterned groove PDG, and another organic film patterned PDP may have a patterned hole PDH1. As mentioned above, the patterned groove PDG and the patterned hole PDH1 may be structures that remove a portion of the organic film patterned PDP to reduce its volume. Reducing the volume of the organic film patterned PDP can decrease the amount of gas generated in the organic film patterned PDP, thereby preventing display defects caused by oxidation of the common electrode CME.

[0156] Pattern slots (PDG) and pattern holes (PDH1) can be configured separately. Pattern slots (PDG) can be configured between different pattern holes (PDH1). The figure shows a case where pattern slots (PDG) and pattern holes (PDH1) are configured alternately. However, this embodiment is not limited to this; pattern slots (PDG) and pattern holes (PDH1) can also be configured alternately in units of two or more. Furthermore, pattern slots (PDG) and pattern holes (PDH1) can alternate regularly or irregularly. For example, one pattern slot (PDG) can be configured, and two pattern holes (PDH1) can be configured on the same line.

[0157] The composition, such as width and configuration, of the patterned groove PDG and the patterned hole PDH1 have been explained, so detailed descriptions are omitted.

[0158] Reference Figure 18 In another embodiment of the display device 1, the depth GH of each pattern groove PDG can be different from each other. For example, the depth GH of each pattern groove PDG can gradually increase as it moves away from the display area DPA. Conversely, as... Figure 19As shown, the depth GH of each pattern groove PDG can gradually increase as it moves closer to the display area DPA. In this embodiment, the example given is that the depth GH of each pattern groove PDG changes gradually, but it is not limited to this; the depth GH of each pattern groove PDG can also change irregularly.

[0159] As described above, according to the display device of each embodiment, the volume of each organic film disposed below the common electrode can be reduced to decrease the amount of gas generated in each organic film. Therefore, the oxidation of the common electrode due to gas emission can be reduced, thereby preventing a decline in display quality.

[0160] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, those skilled in the art should understand that the invention can be implemented in other specific forms without changing the technical concept or essential features. Therefore, the embodiments described above are illustrative of all inventions and should not be construed as limiting.

Claims

1. A display device, comprising: The substrate is defined with display areas and non-display areas; The driving element is located on the display area; The first through-hole layer is located on the driving element and the non-display area; The second through-hole layer is located on the first through-hole layer; The pixel electrode is located on the second via layer and overlaps with the display area; An auxiliary electrode is located on the second via layer and overlaps with the non-display area; A pixel definition film is located on the second via layer and overlaps with the pixel electrode; Multiple organic film patterns are located on the second via layer and overlap with the auxiliary electrode; The light-emitting layer is located on the pixel electrode; A common electrode is located on the light-emitting layer and the auxiliary electrode, and is connected to the auxiliary electrode. The auxiliary electrode includes multiple electrode holes. At least one of the plurality of organic film patterns includes a patterned aperture that overlaps with one of the plurality of electrode apertures. The plurality of organic film patterns are spaced apart from each other on a plane and are also spaced apart from the pixel-defined film.

2. The display device according to claim 1, wherein, The plurality of electrode holes are through holes that pass through the auxiliary electrode, and the patterned holes are through holes that pass through the organic film pattern.

3. The display device according to claim 1, wherein, At least one of the plurality of organic film patterns surrounds one of the plurality of electrode holes, overlaps the auxiliary electrode adjacent to the electrode hole, and is in contact with the upper surface of the auxiliary electrode.

4. The display device according to claim 3, wherein, At least one of the plurality of organic film patterns overlaps with one of the plurality of electrode holes and is in contact with the upper surface of the second through-hole layer through the electrode hole.

5. The display device according to claim 1, wherein, The patterned holes overlap with the electrode holes but not with the auxiliary electrodes.

6. The display device according to claim 1, wherein, The common electrode is connected to the upper surface of the second through-hole layer through the patterned hole.

7. The display device according to claim 1, wherein, The plurality of organic film patterns are spaced apart from each other, and the spaced regions between the plurality of organic film patterns overlap with the auxiliary electrode. The common electrode is in contact with the upper surface of the auxiliary electrode through spaced regions that separate the plurality of organic film patterns from each other.

8. The display device according to claim 1, wherein, The second via layer also includes a first via that overlaps with the electrode via and the patterned via. The side surface of the first through hole and the side surface of the patterned hole are aligned and consistent with each other.

9. The display device according to claim 8, wherein, The common electrode is connected to the upper surface of the first through-hole layer through the patterned hole and the first through-hole.

10. The display device according to claim 8, wherein, The first via layer also includes a second via that overlaps with the electrode via, the patterned via, and the first via. The display device further includes an insulating layer located between the gate electrode of the driving element and the first via layer.

11. The display device according to claim 10, wherein, The side of the second through hole is aligned with the side of the first through hole.

12. The display device according to claim 10, wherein, The common electrode is connected to the upper surface of the insulating layer through the patterned hole, the first through hole, and the second through hole.

13. The display device according to claim 1, wherein, The planar shape of the plurality of organic membrane patterns is a closed loop shape.

14. The display device according to claim 1, wherein, The plurality of organic film patterns and the pixel definition film are located on the same layer and comprise the same material.

15. The display device according to claim 1, wherein, The auxiliary electrode and the pixel electrode are located on the same layer and contain the same material.

16. The display device according to claim 1, wherein, Another of the plurality of organic film patterns also includes a patterned groove that overlaps with another of the plurality of electrode holes.

17. A display device, comprising: The substrate is defined with display areas and non-display areas; The driving element is located on the display area; The first through-hole layer is located on the driving element and the non-display area; The second through-hole layer is located on the first through-hole layer; The pixel electrode is located on the second via layer and overlaps with the display area; An auxiliary electrode is located on the second via layer and overlaps with the non-display area; A pixel definition film is located on the second via layer and overlaps with the pixel electrode; Multiple organic film patterns are located on the second via layer and overlap with the auxiliary electrode; The light-emitting layer is located on the pixel electrode; A common electrode is located on the light-emitting layer and the auxiliary electrode, and is connected to the auxiliary electrode. The auxiliary electrode includes multiple electrode holes. At least one of the plurality of organic film patterns includes a patterned groove that overlaps with one of the plurality of electrode holes. The plurality of organic film patterns are spaced apart from each other on a plane and are also spaced apart from the pixel-defined film.

18. The display device according to claim 17, wherein, The plurality of organic film patterns each include pattern grooves, and the depth of the pattern grooves gradually increases as they move away from the display area.

19. The display device according to claim 17, wherein, The plurality of organic film patterns each include pattern grooves, and the depth of the pattern grooves gradually increases as they move closer to the display area.

20. The display device according to claim 17, wherein, At least one of the plurality of organic film patterns covers the entirety of one of the plurality of electrode holes.

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