Tftansparent display device

Abstract

The present invention can reliably darken only the area where foreign matter has occurred. A transparent display device according to one embodiment of the present invention includes a plurality of transparent regions and a plurality of sub-pixels disposed between the plurality of transparent regions. Each of the plurality of sub-pixels includes a driving transistor comprising an active layer, a gate electrode, a source electrode, and a drain electrode, a light-emitting element comprising a first electrode, a light-emitting layer, and a second electrode, and a conductive organic layer provided between the driving transistor and the first electrode of the light-emitting element to electrically connect the driving transistor and the first electrode. The first electrode includes a first split electrode and a second split electrode, and the conductive organic layer is electrically connected to the first split electrode through a first contact hole and electrically connected to the second split electrode through a second contact hole.

Description

Technology Field

[0001] The present invention relates to a transparent display device. Background Technology

[0002] In a display device, a first electrode, a light-emitting layer, and a second electrode are sequentially stacked, and when voltage is applied to the first electrode and the second electrode, light can be emitted from the light-emitting layer. In the manufacturing process of such a display device, foreign matter may occur on the first electrode, and in such cases, a short circuit may occur between the first electrode and the second electrode in the area where the foreign matter occurred. As a result, the display device has a problem in that the entire subpixel where the foreign matter occurred becomes a dark spot and cannot emit light.

[0003] Meanwhile, research on transparent display devices that allow users to see objects or images located on the opposite side by passing through the display is currently being actively conducted.

[0004] A transparent display device includes a display area where an image is displayed and a non-display area, and the display area may include a transparent area capable of transmitting external light and a non-transparent area. The transparent display device can have a high light transmittance in the display area through the transparent area.

[0005] Since transparent display devices are equipped with a transparent area, the area of ​​the light-emitting region is smaller compared to general display devices. Accordingly, if the entire subpixel of a transparent display device becomes a dark spot due to foreign matter, the decrease in brightness may be more significant than that of a general display device. The problem to be solved

[0006] The present invention has the technical objective of providing a transparent display device capable of reducing the area of ​​the light-emitting region that is darkened.

[0007] In addition, another technical objective of the present invention is to provide a transparent display device capable of reliably darkening only the area where foreign matter has occurred. means of solving the problem

[0008] A transparent display device according to one embodiment of the present invention includes a plurality of transparent regions and a plurality of subpixels disposed between the plurality of transparent regions. Each of the plurality of subpixels includes a driving transistor comprising an active layer, a gate electrode, a source electrode, and a drain electrode, a light-emitting element comprising a first electrode, a light-emitting layer, and a second electrode, and a conductive organic layer provided between the driving transistor and the first electrode of the light-emitting element to electrically connect the driving transistor and the first electrode. The first electrode includes a first split electrode and a second split electrode, and the conductive organic layer is electrically connected to the first split electrode through a first contact hole and electrically connected to the second split electrode through a second contact hole.

[0009] A transparent display device according to another embodiment of the present invention comprises a driving transistor, a conductive organic layer electrically connected to the driving transistor having a first conductivity, an organic pattern having a second conductivity smaller than the first conductivity and configured to expose at least a portion of the conductive organic layer on the conductive organic layer, a planarization film configured on the conductive organic layer and the organic pattern, a first electrode configured on the planarization film and connected to the conductive organic layer through a contact hole, a light-emitting layer configured on the first electrode, and a second electrode configured on the light-emitting layer. Effects of the invention

[0010] The present invention forms the first electrode of a light-emitting element to be electrically connected to a driving transistor through a conductive organic layer, thereby allowing the conductive organic layer to melt or sublimate in the event of foreign matter, thereby electrically separating the first electrode from the driving transistor. In other words, since the split electrode and the driving transistor are electrically separated without laser cutting, the present invention prevents damage to other wiring and circuit components caused by the laser, and simplifies the process and reduces processing time by eliminating the need for a separate laser cutting process.

[0011] In addition, the area of ​​the light-emitting region or the transmission region may not be reduced when forming a conductive organic layer according to the present invention.

[0012] In addition, the present invention allows for primary aging to occur by melting or sublimating the light-emitting layer and the second electrode in the region where foreign matter is located through Joule heating, and secondary aging to occur by melting or sublimating the conductive organic layer and the organic pattern in the contact region where the split electrode and the conductive organic layer come into contact through Joule heating. In this way, the present invention can reduce the area of ​​the light-emitting region that becomes dark through primary and secondary aging and can reliably darken only the region where foreign matter occurs.

[0013] In addition, the present invention can adjust the contact area between the first electrode and the conductive organic layer by considering the limiting current of the driving transistor of each subpixel. Through this, the present invention can ensure that the first electrode and the driving transistor are electrically separated in the contact area in the event of foreign matter, even if the driving transistor has a low limiting current.

[0014] The effects obtainable from the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0015] FIG. 1 is a plan view schematically showing a transparent display panel according to one embodiment of the present invention. Figure 2 is a drawing showing an example of a pixel of a transparent display panel illustrated in Figure 1. Figure 3 is a cross-sectional view showing the first example of I-I' of Figure 2. FIG. 4 is a cross-sectional view showing the first example of II-II' of FIG. 2. FIG. 5 is a diagram illustrating an example in which foreign matter occurs on one of the multiple divided electrodes in FIG. 3. Figure 6 is a drawing for explaining the shape of an organic pattern. Figure 7 is a cross-sectional view showing a second example of I-I' of Figure 2. Figure 8 is a cross-sectional view showing a third example of I-I' of Figure 2. Figure 9 is a cross-sectional view showing the fourth example of I-I' of Figure 2. FIG. 10 is a cross-sectional view showing the fifth example of I-I' of FIG. 2. FIG. 11 is a cross-sectional view showing the fifth example of II-II' of FIG. 2. Figure 12 is a drawing showing another example of a pixel of a transparent display panel illustrated in Figure 1. FIG. 13 is a cross-sectional view showing an example of III-III' of FIG. 12. FIG. 14 is a diagram illustrating an example in which foreign matter occurs on one of the plurality of divided electrodes in FIG. 13. Specific details for implementing the invention

[0016] The advantages and features of this specification and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, this specification is not limited to the embodiments disclosed below but may be implemented in various different forms; these embodiments are provided merely to ensure that the disclosure of this specification is complete and to fully inform those skilled in the art of the scope of the invention, and this specification is defined only by the scope of the claims.

[0017] Shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining embodiments of this specification are exemplary and are not limited to the depicted matters. Throughout the specification, the same reference numerals refer to the same components. Furthermore, in describing this specification, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of this specification, such detailed description is omitted. Where terms such as "includes," "has," or "is made up" are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it includes cases where it is included in the plural unless specifically stated otherwise.

[0018] In interpreting the components, they are interpreted to include a margin of error even in the absence of a separate explicit statement.

[0019] In the case of describing a positional relationship, for example, when the positional relationship between two parts is described using expressions such as 'on,' 'upper,' 'lower,' or 'next to,' one or more other parts may be located between the two parts unless 'immediately' or 'directly' is used.

[0020] In the case of an explanation of a temporal relationship, for example, when a temporal sequence is explained using 'after', 'following', 'next', 'before', etc., it may include cases where the sequence is not continuous unless 'immediately' or 'directly' is used.

[0021] The terms first, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are used merely to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the technical scope of the present invention.

[0022] The term “at least one” should be understood to include all combinations that can be presented from one or more related items. For example, the meaning of “at least one of the first item, the second item, and the third item” may mean not only the first item, the second item, or the third item individually, but also all combinations of items that can be presented from two or more of the first item, the second item, and the third item.

[0023] The features of each of the various embodiments of this specification may be combined or combined with one another, either partially or wholly, and may technically enable various interlocking and operation. Each embodiment may be implemented independently of one another or may be implemented together in an interlocking relationship.

[0024] Hereinafter, a preferred example of a transparent display device according to the present invention will be described in detail with reference to the attached drawings. In assigning reference numerals to the components of each drawing, the same components may have the same reference numeral as much as possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the present invention, such detailed description may be omitted.

[0025] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0026] FIG. 1 is a plan view schematically showing a transparent display panel according to an embodiment of the present invention, and FIG. 2 is a drawing showing an example of a pixel of the transparent display panel shown in FIG. 1. FIG. 3 is a cross-sectional view showing a first example of I-I' in FIG. 2, FIG. 4 is a cross-sectional view showing a first example of II-II' in FIG. 2, and FIG. 5 is a drawing for explaining an example in which foreign matter occurs on one of a plurality of divided electrodes in FIG. 3. FIG. 6 is a drawing for explaining the shape of an organic pattern, FIG. 7 is a cross-sectional view showing a second example of I-I' in FIG. 2, FIG. 8 is a cross-sectional view showing a third example of I-I' in FIG. 2, FIG. 9 is a cross-sectional view showing a fourth example of I-I' in FIG. 2, FIG. 10 is a cross-sectional view showing a fifth example of I-I' in FIG. 2, and FIG. 11 is a cross-sectional view showing a fifth example of II-II' in FIG. 2.

[0027] In the following, the X-axis represents a direction parallel to the scan line, the Y-axis represents a direction parallel to the data line, and the Z-axis represents the height direction of the transparent display device (100).

[0028] Although the transparent display device (100) according to one embodiment of the present invention has been described primarily as being implemented as an organic light-emitting display, it may also be implemented as a liquid crystal display, a plasma display panel (PDP), a quantum dot light-emitting display (QLED), or an electrophoretic display.

[0029] Referring to FIGS. 1 through 11, a transparent display device (100) according to one embodiment of the present invention includes a transparent display panel (110). The transparent display panel (110) includes a first substrate (111) and a second substrate (112) facing each other. The second substrate (112) may be an encapsulation substrate. The first substrate (111) may be a plastic film, a glass substrate (glass substrate TFTate), or a silicon wafer substrate formed using a semiconductor process. The second substrate (112) may be a plastic film, a glass substrate, or an encapsulation film. These first substrate (111) and second substrate (112) may be made of a transparent material.

[0030] The transparent display panel (110) can be divided into a display area (DA) in which pixels (P) are formed to display an image and a non-display area (NDA) in which an image is not displayed. The non-display area (NDA) may be provided with a pad area (PA) in which pads such as power pads and data pads are arranged, and at least one scan drive unit (not shown).

[0031] The scan driver is connected to the scan lines and supplies scan signals. This scan driver may be positioned on one or both sides of the display area (DA) in a gate driver in panel (GIP) manner. For example, the scan driver may be positioned on both sides of the display area (DA), but is not necessarily limited thereto. The scan driver may also be positioned only on one side of the display area (DA).

[0032] The display area (DA) includes a transparent area (TA) and a non-transparent area (NTA) as illustrated in FIG. 2. The transparent area (TA) is an area that transmits most of the light incident from the outside, and the non-transparent area (NTA) is an area that does not transmit most of the light incident from the outside. For example, the transparent area (TA) may be an area with a light transmittance greater than α%, e.g. 90%, and the non-transparent area (NTA) may be an area with a light transmittance less than β%, e.g. 50%. In this case, α is a value greater than β. The transparent display panel (110) can see objects or backgrounds located on the back of the transparent display panel (110) due to the transparent areas (TA).

[0033] A non-transparent region (NTA) is positioned between adjacent transparent regions (TA) and may be provided with a plurality of pixels (P) and a plurality of signal lines. The plurality of signal lines may include scan lines extended in a first direction (X-axis direction) and data lines extended in a second direction (Y-axis direction) from the non-transparent region (NTA).

[0034] Pixels (P) are arranged between transmission regions (TA) to emit a predetermined amount of light to display an image. The light-emitting region may correspond to the region where light is emitted from the pixel (P).

[0035] Each of the pixels (P) may include at least one of a first subpixel (SP1), a second subpixel (SP2), a third subpixel (SP3), and a fourth subpixel (SP4). The first subpixel (SP1) may include a first light-emitting region (EA1) that emits red light, the second subpixel (SP2) may include a second light-emitting region (EA2) that emits green light, the third subpixel (SP3) may include a third light-emitting region (EA3) that emits blue light, and the fourth subpixel (SP4) may include a fourth light-emitting region (EA4) that emits white light, but is not necessarily limited thereto. Each of the pixels (P) may also include a subpixel that emits light of a color other than red, green, blue, and white. Additionally, the arrangement order of each subpixel (SP1, SP2, SP3, SP4) may be varied.

[0036] Meanwhile, light-emitting regions (EA1, EA2, EA3, EA4) provided in each of the plurality of subpixels (SP1, SP2, SP3, SP4) may include light-emitting regions divided into multiple parts. Specifically, the first light-emitting region (EA1) provided in the first subpixel (SP1) may include a first divided light-emitting region (EA11) and a second divided light-emitting region (EA12) that are divided into two parts. The second light-emitting region (EA2) provided in the second subpixel (SP2) may include a first divided light-emitting region (EA21) and a second divided light-emitting region (EA22) that are divided into two parts. The third light-emitting region (EA3) provided in the third subpixel (SP3) may include a first divided light-emitting region (EA31) and a second divided light-emitting region (EA32) that are divided into two parts. The fourth light-emitting region (EA4) provided in the fourth subpixel (SP4) may include a first divided light-emitting region (EA41) and a second divided light-emitting region (EA42) that are divided into two.

[0037] For convenience of explanation, the first subpixel (SP1) is described as a red subpixel emitting red light, the second subpixel (SP2) is described as a green subpixel emitting green light, the third subpixel (SP3) is described as a blue subpixel emitting blue light, and the fourth subpixel (SP4) is described as a white subpixel emitting white light.

[0038] Each of the first subpixel (SP1), second subpixel (SP2), third subpixel (SP3), and fourth subpixel (SP4) may be equipped with a circuit element including a capacitor, a thin-film transistor, and a light-emitting element. The thin-film transistor may include a switching transistor, a sensing transistor, and a driving transistor (TFT).

[0039] The switching transistor switches according to the scan signal supplied to the scan line and serves to supply the data voltage supplied from the data line to the driving transistor (TFT).

[0040] The sensing transistor plays the role of sensing the threshold voltage deviation of the driving transistor (TFT), which is the cause of image degradation.

[0041] The driving transistor (TFT) is switched according to the data voltage supplied from the switching thin-film transistor and generates a data current from the power supplied from the pixel power line and supplies it to the first electrode (120) of the subpixel. The driving transistor (TFT) includes an active layer (ACT), a gate electrode (GE), a source electrode (SE), and a drain electrode (DE).

[0042] The capacitor serves to maintain the data voltage supplied to the driving transistor (TFT) for one frame. The capacitor may include two capacitor electrodes, but is not necessarily limited thereto. In one embodiment, the capacitor may include three capacitor electrodes.

[0043] Specifically, an active layer (ACT) may be provided on the first substrate (111). The active layer (ACT) may be formed of a silicon-based semiconductor material or an oxide-based semiconductor material.

[0044] As shown in FIG. 4, a light-blocking layer (LS) may be provided between the active layer (ACT) and the first substrate (111) to block external light incident on the active layer (ACT). The light-blocking layer (LS) may be made of a conductive material. For example, the light-blocking layer (LS) may be formed as a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. In this case, a buffer film (BF) may be provided between the light-blocking layer (LS) and the active layer (ACT).

[0045] A gate insulating film (GI) may be provided on the active layer (ACT). The gate insulating film (GI) may be formed from an inorganic film, for example, a silicon oxide film (SiOx), a silicon nitride film (SiNx), or a combination thereof.

[0046] A gate electrode (GE) may be provided on the gate insulating film (GI). The gate electrode (GE) may be formed as a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0047] An interlayer insulating film (ILD) may be provided on the gate electrode (GE). The interlayer insulating film (ILD) may be formed of an inorganic film, for example, a silicon oxide film (SiOx), a silicon nitride film (SiNx), or a multilayer film thereof.

[0048] A source electrode (SE) and a drain electrode (DE) may be provided on the interlayer insulating film (ILD). The source electrode (SE) and the drain electrode (DE) may be connected to an active layer (ACT) through a contact hole penetrating the gate insulating film (GI) and the interlayer insulating films (ILD).

[0049] The source electrode (SE) and drain electrode (DE) may be formed as a single layer or multiple layers made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0050] A conductive organic layer (EOL) may be provided on the source electrode (SE) and the drain electrode (DE). The conductive organic layer (EOL) has a first conductivity and can be electrically connected to the source electrode (SE) or the drain electrode (DE). The conductive organic layer (EOL) has electrical conductivity so that it can electrically connect the source electrode (SE) or the drain electrode (DE) of the driving transistor (TFT) with the first electrode (120) of the light-emitting element.

[0051] An organic pattern (OSL) may be provided on the conductive organic layer (EOL). The organic pattern (OSL) may have a second conductivity that is smaller than the first conductivity. That is, the organic pattern (OSL) may have lower conductivity than the conductive organic layer (EOL) or may have insulating properties.

[0052] The organic pattern (OSL) comprises a plurality of patterns, and the plurality of patterns may be spaced apart from each other so that at least a portion of the conductive organic layer (EOL) is exposed. In one embodiment, the organic pattern (OSL) may be formed of a plurality of line patterns as shown in FIGS. 6(a) and 6(b). The plurality of line patterns may be spaced apart from each other so that at least a portion of the conductive organic layer (EOL) placed underneath is exposed.

[0053] In another embodiment, the organic pattern (OSL) may be formed of a plurality of dot patterns as shown in FIG. 6(c) and FIG. 6(d). The plurality of dot patterns may be spaced apart from each other so that at least a portion of the conductive organic layer (EOL) placed underneath is exposed.

[0054] In this organic pattern (OSL), at least one of the width and the spacing distance may differ for each subpixel depending on the required current of the driving transistor (TFT) of each of the plurality of subpixels (SP1, SP2, SP3, SP4). In one embodiment, the thickness of the organic pattern (OSL) may differ for each subpixel depending on the required current of the driving transistor (TFT) of each of the plurality of subpixels (SP1, SP2, SP3, SP4). Specific details will be described later.

[0055] A planarization film (PLN) may be provided on the conductive organic layer (EOL) and organic pattern (OSL) to flatten the step caused by the driving transistor (TFT). The planarization film (PLN) may be formed from an organic film such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0056] On the planarization film (PLN), a bank (125) is provided with light-emitting elements consisting of a first electrode (120), a light-emitting layer (130), and a second electrode (140).

[0057] The first electrode (120) may be provided on the planarization film (PLN). The first electrode (120) may be provided for each subpixel (SP1, SP2, SP3, SP4). One first electrode (120) may be formed in the first subpixel (SP1), another first electrode (120) may be formed in the second subpixel (SP2), yet another first electrode (120) may be formed in the third subpixel (SP3), and yet another first electrode (120) may be formed in the fourth subpixel (SP4). Also, the first electrode (120) is not provided in the transmission region (TA).

[0058] This first electrode (120) may be composed of a metal material with high reflectivity or a stacked structure of a metal material with high reflectivity and a transparent metal material. For example, the first electrode (120) may be formed of a metal material with high reflectivity, such as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and ITO (ITO / Al / ITO), an Ag alloy, and a stacked structure of an Ag alloy and ITO (ITO / Ag alloy / ITO). The Ag alloy may be an alloy of silver (Ag), palladium (Pd), and copper (Cu). The first electrode (120) may be an anode electrode.

[0059] The first electrode (120) is electrically connected to a conductive organic layer (EOL) through a contact hole penetrating the planarization film (PLN), and the conductive organic layer (EOL) can be electrically connected to the source electrode (SE) or drain electrode (DE) of a driving transistor (TFT). As a result, the first electrode (120) is electrically connected to the driving transistor (TFT) and can receive data current from the driving transistor (TFT).

[0060] More specifically, the first electrode (120) provided in each of the plurality of subpixels (SP1, SP2, SP3, SP4) may include a plurality of split electrodes (121, 122) and an anode connection electrode (ACE).

[0061] A plurality of divided electrodes (121, 122) may be provided on a planarization film (PLN). The plurality of divided electrodes (121, 122) may include two or more and may be spaced apart from each other in a first direction (X-axis direction) or a second direction (Y-axis direction). For example, the first electrode (120) may include a first divided electrode (121) and a second divided electrode (122) as shown in FIG. 2, but is not necessarily limited thereto. The plurality of divided electrodes (121, 122) may include two or more.

[0062] The smaller the number of divided electrodes (121, 122) included in one first electrode (120), the greater the opening rate may be, but the area of ​​the region that is darkened by foreign matter may increase, and thus the yield may decrease. On the other hand, the larger the number of divided electrodes (121, 122) included in one first electrode (120), the greater the opening rate may be, but the area of ​​the region that is darkened by foreign matter may decrease, and thus the yield may increase.

[0063] For convenience of explanation, the first electrode (120) is described below as including a first divided electrode (121) and a second divided electrode (122).

[0064] The first split electrode (121) may be placed in the first split light-emitting region (EA11, EA21, EA31, EA41), and the second split electrode (122) may be placed in the second split light-emitting region (EA12, EA22, EA32, EA42). The first split electrode (121) and the second split electrode (122) may be spaced apart from each other on the same layer.

[0065] The anode connection electrode (ACE) is for connecting the first split electrode (121) and the second split electrode (122) to the driving transistor (TFT), and may include a first anode connection part (ACE1) and a second anode connection part (ACE2) as shown in FIG. 2.

[0066] A first anode connection (ACE1) may be provided between a transmission region (TA) and a first split electrode (121). One end of the first anode connection (ACE1) may be connected to the first split electrode (121) and the other end may be connected to a conductive organic layer (EOL). At one end, the first anode connection (ACE1) may be extended from the first split electrode (121) in the direction of the transmission region (TA) by a predetermined length. At the other end, the first anode connection (ACE1) may be extended by bending so that at least a portion may overlap with the conductive organic layer (EOL). At the other end, the first anode connection (ACE1) may overlap with at least a portion with the conductive organic layer (EOL) and may be electrically connected to the conductive organic layer (EOL) through a first contact hole (CH1).

[0067] A second anode connection (ACE2) may be provided between the transmission region (TA) and the second split electrode (122). One end of the second anode connection (ACE2) may be connected to the second split electrode (122) and the other end may be connected to the conductive organic layer (EOL). At one end, the second anode connection (ACE2) may be extended from the second split electrode (122) in the direction of the transmission region (TA) by a predetermined length. At the other end, the second anode connection (ACE2) may be extended by bending so that at least a portion may overlap with the conductive organic layer (EOL). At the other end, the second anode connection (ACE2) may overlap with at least a portion with the conductive organic layer (EOL) and may be electrically connected to the conductive organic layer (EOL) through the second contact hole (CH2).

[0068] The first anode connection (ACE1) may be integrally formed in the same layer as the first split electrode (121), and the second anode connection (ACE2) may be integrally formed in the same layer as the second split electrode (122). The area where the first anode connection (ACE1) and the second anode connection (ACE2) are formed may be a non-transparent area (NTA), but is not necessarily limited thereto. In another embodiment, the first anode connection (ACE1) and the second anode connection (ACE2) may be made of a transparent conductive material. In this case, the area where the first anode connection (ACE1) and the second anode connection (ACE2) are formed may be a transparent area (TA).

[0069] A transparent display panel (110) according to one embodiment of the present invention may further include a transistor connecting electrode (TCE) for connecting the driving transistor (TFT) and the divided electrodes (121, 122) of the first electrode (120).

[0070] One end of the transistor connection electrode (TCE) may be connected to the source electrode (SE) or drain electrode (DE) of the driving transistor (TFT), and the other end may be connected to the first split electrode (121) and the second split electrode (122) through a conductive organic layer (EOL). At one end, the transistor connection electrode (TCE) may extend a predetermined length in the direction of the transmission region (TA) from the source electrode (SE) or drain electrode (DE) of the driving transistor (TFT). At the other end, the transistor connection electrode (TCE) may overlap with at least a portion of the first anode connection (ACE1) connected to the first split electrode (121) and at least a portion of the second anode connection (ACE2) connected to the second split electrode (122).

[0071] The transistor connection electrode (TCE) may be provided such that at least a portion of it is in contact with the conductive organic layer (EOL). The conductive organic layer (EOL) may be directly provided on at least a portion of the upper surface of the transistor connection electrode (TCE). The conductive organic layer (EOL) provided on the upper surface of the other end of the transistor connection electrode (TCE) may be connected to the first split electrode (121) through the first contact hole (CH1) and to the second split electrode (122) through the second contact hole (CH2). Accordingly, the transistor connection electrode (TCE) may be electrically connected to the first split electrode (121) and the second split electrode (122) through the conductive organic layer (EOL) provided on the upper surface.

[0072] A transparent display panel (110) according to one embodiment of the present invention is characterized in that a first electrode (120), composed of a first divided electrode (121) and a second divided electrode (122), is connected to a driving transistor (TFT) through a conductive organic layer (EOL). Through this, even if foreign matter occurs in either the first divided electrode (121) or the second divided electrode (122) of the transparent display panel (110) according to one embodiment of the present invention, only the area equipped with the corresponding divided electrode is reliably darkened, and the remaining divided electrode can operate normally.

[0073] Specifically, in a transparent display panel (110) according to one embodiment of the present invention, foreign matter may occur on either one (121) of the first split electrode (121) and the second split electrode (122). In such a case, a short circuit may occur between the split electrode (121) and the second electrode (140) in the area where the foreign matter is located in the transparent display panel (110) according to one embodiment of the present invention. When an aging signal is applied to the light-emitting element during the aging process, the current may be concentrated in the area where the split electrode (121) and the second electrode (140) are short-circuited, and significant heat may be generated by Joule heating. Here, the aging process may be performed to prevent the quality or reliability from deteriorating before the product is shipped. The aging signal may correspond to a power source or signal applied to the light-emitting element to cause a predetermined current to flow through the light-emitting element, and as an example, it may be a reverse bias voltage.

[0074] In a transparent display panel (110) according to one embodiment of the present invention, when sufficient heat is generated in an area where foreign matter is located, the light-emitting layer (130) and the second electrode (140) may melt, and the divided electrode (121) and the second electrode (140) may be insulated.

[0075] However, if sufficient heat is not generated in the area where the foreign substance is located, the light-emitting layer (130) and the second electrode (140) may not melt, and the split electrode (121) and the second electrode (140) may still be short-circuited. In this case, light emission may not occur not only in the split electrode (121) where the foreign substance occurred, but also in the area where the remaining split electrode (122) is provided.

[0076] A transparent display panel (110) according to one embodiment of the present invention disconnects the connection between the split electrode (121) where foreign matter has occurred and the driving transistor (TFT), thereby enabling light emission in the area where the split electrode (122) where foreign matter has not occurred is provided. To this end, the transparent display panel (110) according to one embodiment of the present invention may not directly connect the first split electrode (121) and the second split electrode (122) to the driving transistor (TFT), but may connect them to the driving transistor (TFT) through a conductive organic layer (EOL).

[0077] Since the source electrode (SE) or drain electrode (DE) of the driving transistor (TFT) is made of a metallic material and has a very high melting point, it is difficult to melt the source electrode (SE) or drain electrode (DE) of the driving transistor (TFT). Accordingly, one method to sever the connection between the split electrode (121) where foreign matter has occurred and the driving transistor (TFT) is to cut the source electrode (SE) or drain electrode (DE) of the driving transistor (TFT) using a laser.

[0078] However, this method can damage other wiring and surrounding components due to the laser, and to prevent laser-induced damage, it is necessary to design the system so that other wiring and circuit components do not overlap with the laser cutting area. In this case, since the wiring and circuit components must be designed within a limited space, the area of ​​the light-emitting region (EA) or the transmission region (TA) may be reduced to secure the laser cutting area. Additionally, because a laser cutting process must be added to locate the split electrode where foreign matter has occurred and to disconnect the connection between the split electrode where foreign matter has occurred and the driving transistor (TFT), the process becomes complex and the process time may be extended.

[0079] In order to solve the aforementioned problems, a transparent display panel (110) according to one embodiment of the present invention may have a structure capable of electrically separating a divided electrode (121) in which foreign matter has occurred and a driving transistor (TFT) without laser cutting.

[0080] Specifically, in one embodiment of the present invention, the transparent display panel (110) may be connected to the driving transistor (TFT) through a conductive organic layer (EOL) rather than being directly connected to the driving transistor (TFT) as shown in FIG. 3, where the first divided electrode (121) and the second divided electrode (122) are not directly connected to the driving transistor (TFT).

[0081] The first contact hole (CH1) can penetrate the planarization film (PLN) to expose at least a portion of the conductive organic layer (EOL) and at least a portion of the organic pattern (OSL). The first split electrode (121) may include a first contact region (CA1) that contacts at least a portion of the conductive organic layer (EOL) and at least a portion of the organic pattern (OSL) exposed by the first contact hole (CH1).

[0082] The second contact hole (CH2) may expose at least a portion of the conductive organic layer (EOL) and at least a portion of the organic pattern (OSL) penetrating the planarization film (PLN). The second split electrode (122) may include a second contact region (CA2) that contacts at least a portion of the conductive organic layer (EOL) and at least a portion of the organic pattern (OSL) exposed by the second contact hole (CH2).

[0083] When foreign matter occurs in either the first split electrode (121) or the second split electrode (122), current is concentrated in the split electrode where foreign matter occurred, and a large amount of current flows in the contact area (CA). For example, when foreign matter occurs in the first split electrode (121), current is concentrated in the first split electrode (121) where foreign matter occurred, and a large amount of current flows in the first contact area (CA1). Accordingly, significant heat can be generated in the first contact area (CA1) by Joule heating.

[0084] The conductive organic layer (EOL) is an organic material that has conductivity and has a lower melting point than a metal material. Accordingly, it can be melted at a lower temperature than the source electrode (SE) or drain electrode (DE) of the driving transistor (TFT). When sufficient heat is generated in the first contact area (CA1) of the first split electrode (121) where foreign matter has occurred, the conductive organic layer (EOL) and organic pattern (OSL) placed in the first contact area (CA1) can be melted as shown in FIG. 5, thereby electrically separating the first split electrode (121) and the transistor connection electrode (TCE). Accordingly, the first contact area (CA1) can be changed into a non-contact area (NCA) where the first split electrode (121) and the conductive organic layer (EOL) do not come into contact.

[0085] Consequently, a transparent display panel (110) according to one embodiment of the present invention can electrically separate a divided electrode (121) and a driving transistor (TFT) in which foreign matter has occurred without laser cutting. Accordingly, the transparent display panel (110) according to one embodiment of the present invention can prevent other wiring and circuit elements from being damaged by a laser, and since a separate laser cutting process is not required, the process can be simplified and the process time can be shortened.

[0086] In addition, a transparent display panel (110) according to one embodiment of the present invention may be designed such that the conductive organic layer (EOL) only needs to be in contact with the divided electrodes (121, 122), and other wiring and circuit elements overlap with the conductive organic layer (EOL). Accordingly, the transparent display panel (110) according to one embodiment of the present invention may not have a reduced area of ​​the light-emitting region (EA) or the transmission region (TA) when forming the conductive organic layer (EOL). That is, the transparent display panel (110) according to one embodiment of the present invention can form the conductive organic layer (EOL) without reducing the aperture ratio and transmittance.

[0087] In addition, in the case of foreign matter occurring in the transparent display panel (110) according to one embodiment of the present invention, the light-emitting layer (130) and the second electrode (140) in the area where the foreign matter is located may be melted or sublimated by line heating, thereby allowing primary aging to occur. In the case of the transparent display panel (110) according to one embodiment of the present invention, only the area where the foreign matter is located may be locally darkened by primary aging. However, in the case of primary aging, if sufficient heat is not generated in the area where the foreign matter is located, or if the light-emitting layer (130) and the second electrode (140) are in a melted state, the divided electrode and the second electrode (140) may not be insulated and may remain electrically connected.

[0088] In this case, the transparent display panel (110) according to one embodiment of the present invention can undergo secondary aging by melting or sublimating the conductive organic layer (EOL) and organic pattern (OSL) of the contact area (CA) through line heating while the current remains concentrated on the divided electrode where foreign matter has occurred. Through this, the transparent display panel (110) according to one embodiment of the present invention can reliably darken only the part of the subpixel where foreign matter has occurred, and prevent the entire subpixel from being darkened.

[0089] Meanwhile, a transparent display panel (110) according to one embodiment of the present invention may have a contact area between a conductive organic layer (EOL) provided on the upper surface of a transistor connection electrode (TCE) and a first electrode (120) formed differently for each subpixel. Here, the contact area between the conductive organic layer (EOL) and the first electrode (120) may represent the total sum of the areas in which the conductive organic layer (EOL) contacts the first anode connection portion (ACE1) and the second anode connection portion (ACE2) extended from each of the divided electrodes (121, 122) within the contact area (CA).

[0090] Specifically, a transparent display panel (110) according to one embodiment of the present invention may form the contact area between the conductive organic layer (EOL) and the first electrode (120) differently for each subpixel, taking into account the magnitude of the current supplied by the driving transistor (TFT).

[0091] Each of the first to fourth subpixels (SP1, SP2, SP3, SP4) may have a different required current depending on the color emitted. The size of the driving transistor (TFT) provided in each of the first to fourth subpixels (SP1, SP2, SP3, SP4) may be determined by considering the required current. For example, among the first to fourth subpixels (SP1, SP2, SP3, SP4), the first subpixel (SP1) emitting red light may have the highest required current. In this case, the driving transistor (TFT) connected to the first electrode (120) of the first subpixel (SP1) may be formed with a larger size than the driving transistors (TFTs) of the second to fourth subpixels (SP2, SP3, SP4) to have a higher limit current. As another example, among the first to fourth subpixels (SP1, SP2, SP3, SP4), the third subpixel (SP3) emitting blue light may have the lowest required current. In this case, the driving transistor (TFT) connected to the first electrode (120) of the third subpixel (SP3) is formed to be smaller in size than the driving transistors (TFTs) of the first, second, and fourth subpixels (SP1, SP2, SP4) and can have a low limit current.

[0092] The first electrode (120) provided in each of the first to fourth subpixels (SP1, SP2, SP3, SP4) may have a contact resistance with the conductive organic layer (EOL) that varies depending on the size of the driving transistors (TFTs). If the size of the driving transistor (TFT) is large, the current supplied by the driving transistor (TFT) is large, so the contact resistance between the first electrode (120) and the conductive organic layer (EOL) may be large. On the other hand, if the size of the driving transistor (TFT) is small, the current supplied by the driving transistor (TFT) is small, so the contact resistance between the first electrode (120) and the conductive organic layer (EOL) may be small.

[0093] A transparent display panel (110) according to one embodiment of the present invention can control the contact resistance between the first electrode (120) and the conductive organic layer (EOL) by controlling the contact area between the conductive organic layer (EOL) and the first electrode (120). Through this, the transparent display panel (110) according to one embodiment of the present invention can have similar contact resistance between the first electrode (120) and the conductive organic layer (EOL) in the first to fourth subpixels (SP1, SP2, SP3, SP4).

[0094] For example, the driving transistor (TFT) connected to the first electrode (120) of the first subpixel (SP1) may be the largest, the driving transistor (TFT) connected to the first electrode (120) of the second subpixel (SP2) may be the second largest, the driving transistor (TFT) connected to the first electrode (120) of the fourth subpixel (SP4) may be the third largest, and the driving transistor (TFT) connected to the first electrode (120) of the third subpixel (SP3) may be the smallest. For instance, the driving transistor (TFT) connected to the first electrode (120) of the red subpixel (SP1) may be the largest, the driving transistor (TFT) connected to the first electrode (120) of the green subpixel (SP2) may be the second largest, the driving transistor (TFT) connected to the first electrode (120) of the white subpixel (SP4) may be the third largest, and the driving transistor (TFT) connected to the first electrode (120) of the blue subpixel (SP3) may be the smallest.

[0095] In this case, the contact area of ​​the first electrode (120) of the third subpixel (SP3) with the conductive organic layer (EOL) may be smaller than that of the first electrode (120) of the fourth subpixel (SP4). The current applied to the first electrode (120) of the third subpixel (SP3) may be smaller than the current applied to the first electrode (120) of the fourth subpixel (SP4). Accordingly, by forming the contact area between the first electrode (120) of the third subpixel (SP3) and the conductive organic layer (EOL) to be smaller than the contact area between the first electrode (120) of the fourth subpixel (SP4) and the conductive organic layer (EOL), the contact resistance between the first electrode (120) of the third subpixel (SP3) and the conductive organic layer (EOL) can be increased.

[0096] Additionally, the contact area between the first electrode (120) of the fourth subpixel (SP4) and the conductive organic layer (EOL) may be smaller than that between the first electrode (120) of the second subpixel (SP2). The current applied to the first electrode (120) of the fourth subpixel (SP4) may be smaller than the current applied to the first electrode (120) of the second subpixel (SP2). Accordingly, by forming the contact area between the first electrode (120) of the fourth subpixel (SP4) and the conductive organic layer (EOL) to be smaller than the contact area between the first electrode (120) of the second subpixel (SP2) and the conductive organic layer (EOL), the contact resistance between the first electrode (120) of the fourth subpixel (SP4) and the conductive organic layer (EOL) can be increased.

[0097] Additionally, the contact area between the first electrode (120) of the second subpixel (SP2) and the conductive organic layer (EOL) may be smaller than that between the first electrode (120) of the first subpixel (SP1). The current applied to the first electrode (120) of the second subpixel (SP2) may be smaller than the current applied to the first electrode (120) of the first subpixel (SP1). Accordingly, by forming the contact area between the first electrode (120) of the second subpixel (SP2) and the conductive organic layer (EOL) to be smaller than the contact area between the first electrode (120) of the first subpixel (SP1) and the conductive organic layer (EOL), the contact resistance between the first electrode (120) of the second subpixel (SP2) and the conductive organic layer (EOL) can be increased.

[0098] Consequently, the contact area between the first electrode (120) and the conductive organic layer (EOL) is smallest in the third subpixel (SP3), the contact area between the first electrode (120) and the conductive organic layer (EOL) is second smallest in the fourth subpixel (SP4), the contact area between the first electrode (120) and the conductive organic layer (EOL) is third smallest in the second subpixel (SP2), and the contact area between the first electrode (120) and the conductive organic layer (EOL) is largest in the first subpixel (SP1). For example, the contact area between the first electrode (120) and the conductive organic layer (EOL) may be the smallest in the blue subpixel (SP3), the contact area between the first electrode (120) and the conductive organic layer (EOL) may be the second smallest in the white subpixel (SP4), the contact area between the first electrode (120) and the conductive organic layer (EOL) may be the third smallest in the green subpixel (SP2), and the contact area between the first electrode (120) and the conductive organic layer (EOL) may be the largest in the red subpixel (SP1).

[0099] In a transparent display panel (110) according to one embodiment of the present invention as described above, when the current applied from the driving transistor (TFR) is small, the contact area between the conductive organic layer (EOL) connected to the driving transistor (TFT) and the first electrode (120) is reduced, thereby increasing the contact resistance between the conductive organic layer (EOL) and the first electrode (120). Through this, the transparent display panel (110) according to one embodiment of the present invention can ensure that when foreign matter occurs, the conductive organic layer (EOL) melts or sublimes in the contact area (CA), thereby electrically separating the first electrode (120) and the driving transistor (TFT).

[0100] Meanwhile, a transparent display panel (110) according to one embodiment of the present invention can adjust the contact area between the conductive organic layer (EOL) and the first electrode (120) in each of the subpixels (SP1, SP2, SP3, SP4) based on at least one of the width and the spacing distance of the organic pattern (OSL) in contact with the first electrode (120).

[0101] In one embodiment, the organic pattern (OSL) in contact with the first electrode (120) may have a different width for each subpixel (SP1, SP2, SP3, SP4). The width of the organic pattern (OSL) may vary depending on the limit current of the driving transistor (TFT) of each subpixel (SP1, SP2, SP3, SP4).

[0102] If the limiting current of the driving transistor (TFT) of the subpixel (SP1, SP2, SP3, SP4) is low, the organic pattern (OSL) may have a wide width to reduce the contact area between the conductive organic layer (EOL) and the first electrode (120) within the contact area (CA). For example, the driving transistor (TFT) provided in the third subpixel (SP3) may have a lower limiting current than the driving transistor (TFT) provided in the first subpixel (SP1). In this case, the contact area between the first electrode (120) provided in the third subpixel (SP3) and the conductive organic layer (EOL) is formed to be smaller than that of the first electrode (120) provided in the first subpixel (SP1), thereby increasing the contact resistance with the conductive organic layer (EOL).

[0103] To this end, the organic pattern (OSL) in contact with the first electrode (120) provided in the third subpixel (SP3) has a first width (W1, W3) as shown in FIG. 6(a) and FIG. 6(c), and the organic pattern (OSL) in contact with the first electrode (120) provided in the first subpixel (SP1) may have a second width (W2, W4) smaller than the first width (W1, W3) as shown in FIG. 6(b) and FIG. 6(d). At this time, the spacing distance (d1, d3) of the organic pattern (OSL) in contact with the first electrode (120) provided in the third subpixel (SP3) may be the same as the spacing distance (d2, d4) of the organic pattern (OSL) in contact with the first electrode (120) provided in the first subpixel (SP1).

[0104] Consequently, if the contact area (CA) is the same, the conductive organic layer (EOL) may be exposed with a smaller area not covered by the organic pattern (OSL) in the contact area (CA) of the first electrode (120) provided in the third subpixel (SP3). That is, the contact area with the conductive organic layer (EOL) of the first electrode (120) provided in the third subpixel (SP3) may be smaller than that of the first electrode (120) provided in the first subpixel (SP1). Accordingly, even though the driving transistor (TFT) provided in the third subpixel (SP3) has a low limit current, by increasing the contact resistance between the first electrode (120) provided in the third subpixel (SP3) and the conductive organic layer (EOL), sufficient heat can be generated for the conductive organic layer (EOL) and the organic pattern (OSL) to melt or sublimate when a short circuit occurs between the first electrode (120) and the second electrode (140).

[0105] In another embodiment, the organic pattern (OSL) in contact with the first electrode (120) may have a different spacing distance for each subpixel (SP1, SP2, SP3, SP4). The spacing distance of the organic pattern (OSL) may vary depending on the limit current of the driving transistor (TFT) of each subpixel (SP1, SP2, SP3, SP4).

[0106] If the limiting current of the driving transistor (TFT) of the subpixel (SP1, SP2, SP3, SP4) is low, the organic pattern (OSL) may have a small spacing distance to reduce the contact area between the conductive organic layer (EOL) and the first electrode (120) within the contact area (CA). For example, the driving transistor (TFT) provided in the third subpixel (SP3) may have a lower limiting current than the driving transistor (TFT) provided in the first subpixel (SP1). In this case, the contact area between the first electrode (120) provided in the third subpixel (SP3) and the conductive organic layer (EOL) is formed to be smaller than that of the first electrode (120) provided in the first subpixel (SP1), thereby increasing the contact resistance with the conductive organic layer (EOL).

[0107] To this end, the organic pattern (OSL) in contact with the first electrode (120) provided in the third subpixel (SP3) has a first separation distance, and the organic pattern (OSL) in contact with the first electrode (120) provided in the first subpixel (SP1) may have a second separation distance greater than the first separation distance. At this time, the width of the organic pattern (OSL) in contact with the first electrode (120) provided in the third subpixel (SP3) may be the same as the width of the organic pattern (OSL) in contact with the first electrode (120) provided in the first subpixel (SP1).

[0108] Consequently, if the contact area (CA) is the same, the conductive organic layer (EOL) may be exposed with a smaller area not covered by the organic pattern (OSL) in the contact area (CA) of the first electrode (120) provided in the third subpixel (SP3). That is, the contact area with the conductive organic layer (EOL) of the first electrode (120) provided in the third subpixel (SP3) may be smaller than that of the first electrode (120) provided in the first subpixel (SP1). Accordingly, even though the driving transistor (TFT) provided in the third subpixel (SP3) has a low limit current, by increasing the contact resistance between the first electrode (120) provided in the third subpixel (SP3) and the conductive organic layer (EOL), sufficient heat can be generated for the conductive organic layer (EOL) and the organic pattern (OSL) to melt or sublimate when a short circuit occurs between the first electrode (120) and the second electrode (140).

[0109] In another embodiment, the organic pattern (OSL) in contact with the first electrode (120) may have different widths and spacing distances for each subpixel (SP1, SP2, SP3, SP4). The width and spacing distance of the organic pattern (OSL) may vary depending on the limiting current of the driving transistor (TFT) of each subpixel (SP1, SP2, SP3, SP4). If the limiting current of the driving transistor (TFT) of the subpixel (SP1, SP2, SP3, SP4) is low, the width and spacing distance of the organic pattern (OSL) may be appropriately designed so that the contact area between the conductive organic layer (EOL) and the first electrode (120) within the contact area (CA) is reduced.

[0110] A transparent display panel (110) according to one embodiment of the present invention can adjust the contact area between the first electrode (120) and the conductive organic layer (EOL) by considering the limit current of each driving transistor (TFT) of the subpixels (SP1, SP2, SP3, SP4). Through this, the transparent display panel (110) according to one embodiment of the present invention can ensure that the first electrode (120) and the driving transistor (TFT) are electrically separated in the contact area (CA) when foreign matter occurs, even if the driving transistor (TFT) has a low limit current.

[0111] A transparent display panel (110) according to one embodiment of the present invention can reduce the light loss rate caused by the occurrence of a dark spot by ensuring that only the area where the foreign substance is located becomes a local dark spot even if a foreign substance occurs, or by ensuring that only the corresponding divided electrode among the plurality of divided electrodes (121, 122) is short-circuited.

[0112] A bank (125) may be provided on a planarization film (PLN). Additionally, the bank (125) may be provided between the first electrodes (120) provided in each of the first to fourth subpixels (SP1, SP2, SP3, SP4), and may also be provided on the first anode connection (ACE1), the second anode connection (ACE2), the first contact hole (CH1), and the second contact hole (CH2). Furthermore, the bank (125) may be formed to cover the edges of each of the first electrodes (120) and expose a portion of each of the first electrodes (120). Accordingly, the bank (125) can prevent the problem of reduced luminous efficiency caused by current concentration at the ends of each of the first electrodes (120).

[0113] Bank (125) can define light-emitting regions (EA11, EA12, EA21, EA22, EA31, EA32, EA41, EA42) for each of the subpixels (SP1, SP2, SP3, SP4). Each light-emitting region (EA11, EA12, EA21, EA22, EA31, EA32, EA41, EA42) of the subpixels (SP1, SP2, SP3, SP4) represents a region in which a first electrode (120), an organic light-emitting layer (130), and a second electrode (140) are sequentially stacked so that holes from the first electrode (120) and electrons from the second electrode (140) combine with each other in the organic light-emitting layer (130) to emit light. In this case, the area where the bank (125) is formed within the non-transparent area (NTA) becomes a non-luminous area because it does not emit light, and the area where the bank (125) is not formed and the first electrode (120) is exposed can become a luminous area (EA11, EA12, EA21, EA22, EA31, EA32, EA41, EA42).

[0114] Bank (125) can be formed from an organic film such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin.

[0115] An organic light-emitting layer (130) may be provided on the first electrode (120). The organic light-emitting layer (130) may include a hole transport layer, a light-emitting layer, and an electron transport layer. In this case, when a voltage is applied to the first electrode (120) and the second electrode (140), holes and electrons move to the light-emitting layer through the hole transport layer and the electron transport layer, respectively, and combine with each other in the light-emitting layer to emit light.

[0116] In one embodiment, the common layer may be formed in common on the subpixels (SP1, SP2, SP3, SP4). In this case, the light-emitting layer may be a white light-emitting layer that emits white light.

[0117] In another embodiment, the organic light-emitting layer (130) may have a light-emitting layer formed for each subpixel (SP1, SP2, SP3, SP4). For example, a red light-emitting layer emitting red light may be formed in the first subpixel (SP1), a green light-emitting layer emitting green light may be formed in the second subpixel (SP2), a blue light-emitting layer emitting blue light may be formed in the third subpixel (SP3), and a white light-emitting layer emitting white light may be formed in the fourth subpixel (SP4). In this case, the light-emitting layer of the organic light-emitting layer (130) is not formed in the transmission region (TA).

[0118] The second electrode (140) may be provided on the organic light-emitting layer (130) and the bank (125). The second electrode (140) may be provided in the non-transparent region (NTA) including the light-emitting region (EA) as well as in the transparent region (TA), but is not necessarily limited thereto. The second electrode (140) may be provided only in the non-transparent region (NTA) including the light-emitting region (EA) and may not be provided in the transparent region (TA) to improve transmittance.

[0119] This second electrode (140) may be a common layer formed in common across subpixels (SP1, SP2, SP3, SP4) to apply the same voltage. The second electrode (140) may be made of a conductive material capable of transmitting light. For example, the second electrode (140) may be formed of a low-resistance metallic material, such as silver (Ag), or an alloy of magnesium (Mg) and silver (Ag).

[0120] A sealing film (150) may be provided on the light-emitting elements. The sealing film (150) may be formed to cover the second electrode (140) on the second electrode (140). The sealing film (150) serves to prevent oxygen or moisture from penetrating into the organic light-emitting layer (130) and the second electrode (140). To this end, the sealing film (150) may include at least one inorganic film and at least one organic film.

[0121] Meanwhile, although not shown in the drawing, a capping layer may be additionally formed between the second electrode (140) and the sealing film (150).

[0122] A color filter (CF) may be provided on the sealing film (150). The color filter (CF) may be provided on one side of the second substrate (112) facing the first substrate (111). In this case, the first substrate (111) provided with the sealing film (150) and the second substrate (112) provided with the color filter (CF) may be bonded together by a separate adhesive layer (not shown). At this time, the adhesive layer (not shown) may be an optically clear resin layer (OCR) or an optically clear adhesive film (OCA).

[0123] A color filter (CF) can be patterned for each subpixel (SP1, SP2, SP3, SP4). Specifically, the color filter (CF) may include a first color filter, a second color filter, and a third color filter. The first color filter may be positioned to correspond to the light-emitting region (EA1) of the first subpixel (SP1) and may be a red color filter that transmits red light. The second color filter may be positioned to correspond to the light-emitting region (EA2) of the second subpixel (SP2) and may be a green color filter that transmits green light. The third color filter may be positioned to correspond to the light-emitting region (EA3) of the third subpixel (SP3) and may be a blue color filter that transmits blue light. In one embodiment, the color filter (CF) may further include a fourth color filter. The fourth color filter may be positioned to correspond to the light-emitting region (EA4) of the fourth subpixel (SP4) and may be a white color filter that transmits white light. The white color filter may be made of a transparent organic material that transmits white light.

[0124] A black matrix (not shown) may be provided between the color filters (CF). The black matrix (not shown) is provided between the subpixels (SP1, SP2, SP3, SP4) to prevent color mixing between adjacent subpixels (SP1, SP2, SP3, SP4).

[0125] Meanwhile, a black matrix (not shown) may be provided between a color filter (CF) and a transmission area (TA). The black matrix (not shown) is provided between the transmission area (TA) and a plurality of subpixels (SP1, SP2, SP3, SP4) to prevent light emitted from each of the plurality of subpixels (SP1, SP2, SP3, SP4) from proceeding to the transmission area (TA).

[0126] This black matrix (not shown) may include a light-absorbing material, for example, a black dye that absorbs all light in the visible light wavelength range.

[0127] Meanwhile, FIGS. 3 to 6 illustrate that the organic pattern (OSL) is provided in an area excluding the first contact area (CA1) and the second contact area (CA2), but it is not necessarily limited thereto. In another embodiment, the organic pattern (OSL) may be provided to overlap only the contact area (CA1) and the second contact area (CA2) as shown in FIG. 7. Since the organic pattern (OSL) overlaps with the first contact hole (CH1) and the second contact hole (CH2) to control the contact area between the conductive organic layer (EOL) and the first electrode (120), it may be formed only in the area overlapping with the first contact hole (CH1) and the second contact hole (CH2).

[0128] Meanwhile, FIGS. 3 to 6 illustrate that the conductive organic layer (EOL) is formed directly on the upper surface of the transistor connection electrode (TCE), but this is not necessarily limited thereto. In other embodiments, the conductive organic layer (EOL) may be spaced apart from the transistor connection electrode (TCE) of the driving transistor (TFT) by at least one insulating layer, as shown in FIG. 8. At least one insulating film, such as a passivation film (PAS), may be further provided between the conductive organic layer (EOL) and the driving transistor (TFT). The conductive organic layer (EOL) may be connected to the transistor connection electrode (TCE) of the driving transistor (TFT) through a fourth contact hole (CH4) penetrating the passivation film (PAS).

[0129] The transparent display panel (110) illustrated in FIG. 8 can prevent the driving transistor (TFT) from being damaged by heat generated in the contact area (CA) of the divided electrode where foreign matter has occurred by forming at least one insulating film between the conductive organic layer (EOL) and the driving transistor (TFT).

[0130] Meanwhile, FIGS. 3 to 6 illustrate a separate configuration in which the conductive organic layer (EOL) and the organic pattern (OSL) are made of different materials, but this is not necessarily limited thereto. In other embodiments, the conductive organic layer (EOL) and the organic pattern (OSL) may be integrally formed from the same material. In this case, the conductive organic layer (EOL) may include a flat portion (EOL1) provided flatly on the transistor connection electrode (TCE) as shown in FIG. 9, and an uneven pattern portion (EOL2) provided as an uneven pattern on the flat portion (EOL1).

[0131] The transparent display panel (110) illustrated in FIG. 9 can adjust the contact area between the conductive organic layer (EOL) and the first electrode (120) in each of the subpixels (SP1, SP2, SP3, SP4) based on at least one of the width and spacing of the uneven pattern portion (EOL2).

[0132] In one embodiment, the width of the uneven pattern portion (EOL2) of the conductive organic layer (EOL) may differ for each subpixel (SP1, SP2, SP3, SP4). The width of the uneven pattern portion (EOL2) may vary depending on the limiting current of the driving transistor (TFT) of each subpixel (SP1, SP2, SP3, SP4).

[0133] If the limiting current of the driving transistor (TFT) of the subpixel (SP1, SP2, SP3, SP4) is low, the uneven pattern portion (EOL2) may have a wide width so that the conductive organic layer (EOL) within the contact area (CA) can have a small contact area with the first electrode (120). For example, the driving transistor (TFT) provided in the third subpixel (SP3) may have a lower limiting current than the driving transistor (TFT) provided in the first subpixel (SP1). In this case, the contact area of ​​the first electrode (120) provided in the third subpixel (SP3) with the conductive organic layer (EOL) is formed to be smaller than that of the first electrode (120) provided in the first subpixel (SP1), thereby increasing the contact resistance with the conductive organic layer (EOL).

[0134] To this end, the uneven pattern portion (EOL2) in contact with the first electrode (120) provided in the third subpixel (SP3) may have a wider width than the uneven pattern portion (EOL2) in contact with the first electrode (120) provided in the first subpixel (SP1). At this time, the uneven pattern portion (EOL2) in contact with the first electrode (120) provided in the third subpixel (SP3) may have the same spacing as the uneven pattern portion (EOL2) in contact with the first electrode (120) provided in the first subpixel (SP1).

[0135] Consequently, if the contact area (CA) is the same, the surface area of ​​the conductive organic layer (EOL) may be smaller as the width of the uneven pattern portion (EOL2) increases, and the surface area may be larger as the width of the uneven pattern (EOL2) decreases. Accordingly, the contact area between the first electrode (120) provided in the third subpixel (SP3) and the conductive organic layer (EOL) may be smaller than that of the first electrode (120) provided in the first subpixel (SP1). Even though the driving transistor (TFT) provided in the third subpixel (SP3) has a low limit current, by increasing the contact resistance between the first electrode (120) provided in the third subpixel (SP3) and the conductive organic layer (EOL), sufficient heat can be generated to melt or sublimate the conductive organic layer (EOL) and the organic pattern (OSL) when a short circuit occurs between the first electrode (120) and the second electrode (140).

[0136] In another embodiment, the spacing of the uneven pattern portion (EOL2) of the conductive organic layer (EOL) may differ for each subpixel (SP1, SP2, SP3, SP4). The spacing of the uneven pattern portion (EOL2) may vary depending on the limiting current of the driving transistor (TFT) of each subpixel (SP1, SP2, SP3, SP4).

[0137] If the limiting current of the driving transistor (TFT) of the subpixel (SP1, SP2, SP3, SP4) is low, the uneven pattern portion (EOL2) may have a large separation distance so that the conductive organic layer (EOL) within the contact area (CA) can have a small contact area with the first electrode (120). For example, the driving transistor (TFT) provided in the third subpixel (SP3) may have a lower limiting current than the driving transistor (TFT) provided in the first subpixel (SP1). In this case, the contact area of ​​the first electrode (120) provided in the third subpixel (SP3) with the conductive organic layer (EOL) is formed to be smaller than that of the first electrode (120) provided in the first subpixel (SP1), thereby increasing the contact resistance with the conductive organic layer (EOL).

[0138] To this end, the uneven pattern portion (EOL2) in contact with the first electrode (120) provided in the third subpixel (SP3) may have a larger spacing than the uneven pattern portion (EOL2) in contact with the first electrode (120) provided in the first subpixel (SP1). At this time, the uneven pattern portion (EOL2) in contact with the first electrode (120) provided in the third subpixel (SP3) may have the same width as the uneven pattern portion (EOL2) in contact with the first electrode (120) provided in the first subpixel (SP1).

[0139] Consequently, if the contact area (CA) is the same, the surface area of ​​the conductive organic layer (EOL) may be smaller as the spacing distance of the uneven pattern portion (EOL2) increases, and the surface area may be larger as the spacing distance of the uneven pattern (EOL2) decreases. Accordingly, the contact area between the first electrode (120) provided in the third subpixel (SP3) and the conductive organic layer (EOL) may be smaller than that of the first electrode (120) provided in the first subpixel (SP1). Even though the driving transistor (TFT) provided in the third subpixel (SP3) has a low limit current, by increasing the contact resistance between the first electrode (120) provided in the third subpixel (SP3) and the conductive organic layer (EOL), sufficient heat can be generated to cause the conductive organic layer (EOL) and the organic pattern (OSL) to melt or sublimate when a short circuit occurs between the first electrode (120) and the second electrode (140).

[0140] In another embodiment, the width and spacing of the uneven pattern portion (EOL2) of the conductive organic layer (EOL) may differ for each subpixel (SP1, SP2, SP3, SP4). The width and spacing of the uneven pattern portion (EOL2) of the conductive organic layer (EOL) may vary depending on the limiting current of the driving transistor (TFT) of each subpixel (SP1, SP2, SP3, SP4). If the limiting current of the driving transistor (TFT) of the subpixel (SP1, SP2, SP3, SP4) is low, the width and spacing of the uneven pattern portion (EOL2) of the conductive organic layer (EOL) can be appropriately designed so that the contact area between the conductive organic layer (EOL) and the first electrode (120) within the contact region (CA) is reduced.

[0141] The transparent display panel (110) illustrated in FIG. 9 can simplify the process by omitting the organic pattern (OSL), thereby eliminating the process of forming the organic pattern (OSL). Additionally, the transparent display panel (110) illustrated in FIG. 9 can avoid forming the organic pattern (OSL) through a separate process on the conductive organic layer (EOL) having a small area. This transparent display panel (100) illustrated in FIG. 9 can prevent the organic pattern (OSL) from being formed on the conductive organic layer (EOL) due to process errors, thereby preventing the contact area between the conductive organic layer (EOL) and the first electrode (120) from becoming larger and the contact resistance from becoming lower, contrary to the design.

[0142] Meanwhile, in FIGS. 3 to 6, the transistor connection electrode (TCE) of the driving transistor (TFT) is shown extending to the contact region (CA), but is not necessarily limited thereto. In other embodiments, the transistor connection electrode (TCE) of the driving transistor (TFT) may not overlap with the contact region (CA) as shown in FIGS. 10 and 11. In such cases, the transistor connection electrode (TCE) of the driving transistor (TFT) may overlap with at least a portion of the conductive organic layer (EOL) at the end.

[0143] The conductive organic layer (EOL) may be electrically connected by overlapping at least a portion with the transistor connection electrode (TCE) of the driving transistor (TFT). In this case, the conductive organic layer (EOL) may be in direct contact with the transistor connection electrode (TCE), but is not necessarily limited thereto. If at least one insulating film is provided between the conductive organic layer (EOL) and the transistor connection electrode (TCE), the conductive organic layer (EOL) may be electrically connected to the transistor connection electrode (TCE) through a contact hole penetrating the at least one insulating film.

[0144] Additionally, the conductive organic layer (EOL) may be extended by a predetermined length in the direction of the transmission region (TA) from the region overlapping with the transistor connection electrode (TCE). The conductive organic layer (EOL) may overlap with the first anode connection (ACE1) and the second anode connection (ACE2) between the transmission region (TA) and the subpixels (SP1, SP2, SP3, SP4), and may be connected to the first anode connection (ACE1) through the first contact hole (CH1) and to the second anode connection (ACE2) through the second contact hole (CH2).

[0145] The transparent display panel (110) illustrated in FIGS. 10 and 11 can prevent transmittance loss caused by the transistor connection electrode (TCE) by ensuring that the transistor connection electrode (TCE) of the driving transistor (TFT) does not overlap with the contact area (CA). Since the transistor connection electrode (TCE) of the driving transistor (TFT) is made of a metal material and has low transmittance, transmittance loss may occur due to the transistor connection electrode (TCE) when it overlaps with the contact area (CA). On the other hand, since the conductive organic layer (EOL) is an organic material and has high transmittance, transmittance loss may not occur even if the conductive organic layer (EOL) is provided in the contact area (CA).

[0146] Meanwhile, in FIGS. 2 to 11, the divided electrodes (121, 122) of the first electrode (120) are shown as being connected to a driving transistor (TFT) through an anode connection electrode (ACE) protruding in the direction of the transmission region (TA), but are not necessarily limited thereto.

[0147] In another embodiment, the split electrodes (121, 122) of the first electrode (120) can be connected to a driving transistor (TFT) through a conductive organic layer (EOL) provided between the split electrodes (121, 122) without a separate anode connection electrode (ACE). This will be explained in detail below with reference to FIGS. 12 to 14.

[0148] FIG. 12 is a drawing showing another example of a pixel of a transparent display panel illustrated in FIG. 1, FIG. 13 is a cross-sectional view showing the example of III-III' in FIG. 12, and FIG. 14 is a drawing for explaining an example in which foreign matter occurs on one of the plurality of divided electrodes in FIG. 13.

[0149] The transparent display panel (110) illustrated in FIGS. 12 to 14 differs from the transparent display panel (110) illustrated in FIGS. 2 to 11 in that the divided electrodes (121, 122) of the first electrode (120) are connected to a driving transistor (TFT) through a conductive organic layer (EOL) provided between the divided electrodes (121, 122). Hereinafter, redundant descriptions will be omitted, and the differences will be explained in detail.

[0150] Referring to FIGS. 12 to 14, the first electrode (120) may include a first split electrode (121) and a second split electrode (122) without an anode connection electrode (ACE). The first split electrode (121) may be placed in a first split light-emitting region (EA11, EA21, EA31, EA41), and the second split electrode (122) may be placed in a second split light-emitting region (EA12, EA22, EA32, EA42). The first split electrode (121) and the second split electrode (122) may be spaced apart from each other on the same layer.

[0151] A conductive organic layer (EOL) may be provided between the first split electrode (121) and the second split electrode (122). One end of the conductive organic layer (EOL) may overlap at least partially with the first split electrode (121). The conductive organic layer (EOL) may be electrically connected to the first split electrode (121) through a first contact hole (CH1) in the area overlapping with the first split electrode (121). The other end of the conductive organic layer (EOL) may overlap at least partially with the second split electrode (122). The conductive organic layer (EOL) may be electrically connected to the second split electrode (122) through a second contact hole (CH2) in the area overlapping with the second split electrode (122).

[0152] Additionally, the conductive organic layer (EOL) may overlap with the source electrode (SE) or drain electrode (DE) of the driving transistor (TFT) in the region between the first split electrode (121) and the second split electrode (122). The conductive organic layer (EOL) may be electrically connected to the source electrode (SE) or drain electrode (DE) through the fourth contact hole (CH4) in the region overlapping with the source electrode (SE) or drain electrode (DE).

[0153] A transparent display panel (110) according to another embodiment of the present invention is characterized in that a first electrode (120), composed of a first divided electrode (121) and a second divided electrode (122), is connected to a driving transistor (TFT) through a conductive organic layer (EOL). Through this, even if foreign matter occurs in either the first divided electrode (121) or the second divided electrode (122) of the transparent display panel (110) according to another embodiment of the present invention, only the area equipped with the corresponding divided electrode is reliably darkened, and the remaining divided electrode can operate normally.

[0154] In a transparent display panel (110) according to another embodiment of the present invention, foreign matter may occur on either one (121) of the first split electrode (121) and the second split electrode (122). In this case, a short circuit may occur between the split electrode (121) and the second electrode (140) in the area where the foreign matter is located in the transparent display panel (110) according to another embodiment of the present invention. When an aging signal is applied to the light-emitting element during the aging process, the current is concentrated in the area where the split electrode (121) and the second electrode (140) are short-circuited, and significant heat may be generated by Joule heating.

[0155] In a transparent display panel (110) according to another embodiment of the present invention, when sufficient heat is generated in the area where foreign matter is located, the light-emitting layer (130) and the second electrode (140) may melt, and the divided electrode (121) and the second electrode (140) may be insulated.

[0156] However, if sufficient heat is not generated in the area where the foreign substance is located, the light-emitting layer (130) and the second electrode (140) may not melt, and the split electrode (121) and the second electrode (140) may still be short-circuited. In this case, light emission may not occur not only in the split electrode (121) where the foreign substance occurred, but also in the area where the remaining split electrode (122) is provided.

[0157] A transparent display panel (110) according to another embodiment of the present invention disconnects the connection between the divided electrode (121) where foreign matter has occurred and the driving transistor (TFT), thereby enabling light emission in the area where the divided electrode (122) where foreign matter has not occurred is provided.

[0158] Specifically, in another embodiment of the present invention, the transparent display panel (110) may be connected to the driving transistor (TFT) through a conductive organic layer (EOL) rather than being directly connected to the driving transistor (TFT) as shown in FIG. 13, where the first divided electrode (121) and the second divided electrode (122) are connected to the driving transistor (TFT).

[0159] The first contact hole (CH1) can penetrate the planarization film (PLN) to expose at least a portion of the conductive organic layer (EOL) and at least a portion of the organic pattern (OSL). The first split electrode (121) may include a first contact region (CA1) that contacts at least a portion of the conductive organic layer (EOL) and at least a portion of the organic pattern (OSL) exposed by the first contact hole (CH1).

[0160] The second contact hole (CH2) may expose at least a portion of the conductive organic layer (EOL) and at least a portion of the organic pattern (OSL) penetrating the planarization film (PLN). The second split electrode (122) may include a second contact region (CA2) that contacts at least a portion of the conductive organic layer (EOL) and at least a portion of the organic pattern (OSL) exposed by the second contact hole (CH2).

[0161] When foreign matter occurs in either the first split electrode (121) or the second split electrode (122), current is concentrated in the split electrode where foreign matter occurred, and a large amount of current flows in the contact area (CA). For example, when foreign matter occurs in the first split electrode (121), current is concentrated in the first split electrode (121) where foreign matter occurred, and a large amount of current flows in the first contact area (CA1). Accordingly, significant heat can be generated in the first contact area (CA1) by Joule heating.

[0162] When sufficient heat is generated in the first contact area (CA1) of the first split electrode (121) where foreign matter has occurred, the conductive organic layer (EOL) and organic pattern (OSL) placed in the first contact area (CA1) can be melted as shown in FIG. 14, thereby electrically separating the first split electrode (121) and the transistor connection electrode (TCE). Accordingly, the first contact area (CA1) can be changed into a non-contact area (NCA) where the first split electrode (121) and the conductive organic layer (EOL) do not come into contact.

[0163] Consequently, the transparent display panel (110) according to another embodiment of the present invention can electrically separate the split electrode (121) and the driving transistor (TFT) where foreign matter has occurred without laser cutting. Accordingly, the transparent display panel (110) according to another embodiment of the present invention can prevent other wiring and circuit elements from being damaged by the laser, and since a separate laser cutting process is not required, the process can be simplified and the process time can be shortened.

[0164] In addition, in a transparent display panel (110) according to another embodiment of the present invention, since the conductive organic layer (EOL) only needs to be in contact with the divided electrodes (121, 122), other wiring and circuit elements can be designed to overlap with the conductive organic layer (EOL). Accordingly, in a transparent display panel (110) according to another embodiment of the present invention, the area of ​​the light-emitting region (EA) or the transmission region (TA) may not be reduced when forming the conductive organic layer (EOL). That is, a transparent display panel (110) according to another embodiment of the present invention can form the conductive organic layer (EOL) without reducing the aperture ratio and transmittance.

[0165] In addition, in a transparent display panel (110) according to another embodiment of the present invention, when foreign matter occurs, the light-emitting layer (130) and the second electrode (140) in the area where the foreign matter is located may be melted or sublimated by line heating, thereby allowing primary aging to occur. In a transparent display panel (110) according to another embodiment of the present invention, only the area where foreign matter is located may be locally darkened by primary aging. However, in the primary aging, if sufficient heat is not generated in the area where the foreign matter is located, or if the light-emitting layer (130) and the second electrode (140) are in a melted state, the divided electrode and the second electrode (140) may not be insulated and may remain electrically connected.

[0166] In this case, the transparent display panel (110) according to another embodiment of the present invention can undergo secondary aging by melting or sublimating the conductive organic layer (EOL) and organic pattern (OSL) of the contact area (CA) through line heating while the current remains concentrated on the divided electrode where foreign matter has occurred. Through this, the transparent display panel (110) according to another embodiment of the present invention can reliably darken only the part of the subpixel where foreign matter has occurred, and prevent the entire subpixel from being darkened.

[0167] Meanwhile, a transparent display panel (110) according to another embodiment of the present invention may have the contact area between the conductive organic layer (EOL) and the first electrode (120) formed differently for each subpixel. Here, the contact area between the conductive organic layer (EOL) and the first electrode (120) may represent the total sum of the areas where the conductive organic layer (EOL) contacts the divided electrodes (121, 122) within the contact area (CA).

[0168] Specifically, in another embodiment of the present invention, the transparent display panel (110) may form the contact area between the conductive organic layer (EOL) and the first electrode (120) differently for each subpixel, taking into account the magnitude of the current supplied by the driving transistor (TFT).

[0169] A transparent display panel (110) according to another embodiment of the present invention can control the contact resistance between the first electrode (120) and the conductive organic layer (EOL) by controlling the contact area between the conductive organic layer (EOL) and the first electrode (120). Through this, the transparent display panel (110) according to another embodiment of the present invention can have similar contact resistance between the first electrode (120) and the conductive organic layer (EOL) in the first to fourth subpixels (SP1, SP2, SP3, SP4).

[0170] Meanwhile, a transparent display panel (110) according to another embodiment of the present invention can adjust the contact area between the conductive organic layer (EOL) and the first electrode (120) in each of the subpixels (SP1, SP2, SP3, SP4) based on at least one of the width and the spacing distance of the organic pattern (OSL) in contact with the first electrode (120).

[0171] In one embodiment, the organic pattern (OSL) in contact with the first electrode (120) may have a different width for each subpixel (SP1, SP2, SP3, SP4). The width of the organic pattern (OSL) may vary depending on the limit current of the driving transistor (TFT) of each subpixel (SP1, SP2, SP3, SP4).

[0172] In another embodiment, the organic pattern (OSL) in contact with the first electrode (120) may have a different spacing distance for each subpixel (SP1, SP2, SP3, SP4). The spacing distance of the organic pattern (OSL) may vary depending on the limit current of the driving transistor (TFT) of each subpixel (SP1, SP2, SP3, SP4).

[0173] In another embodiment, the organic pattern (OSL) in contact with the first electrode (120) may have different widths and spacing distances for each subpixel (SP1, SP2, SP3, SP4). The width and spacing distance of the organic pattern (OSL) may vary depending on the limiting current of the driving transistor (TFT) of each subpixel (SP1, SP2, SP3, SP4). If the limiting current of the driving transistor (TFT) of the subpixel (SP1, SP2, SP3, SP4) is low, the width and spacing distance of the organic pattern (OSL) may be appropriately designed so that the contact area between the conductive organic layer (EOL) and the first electrode (120) within the contact area (CA) is reduced.

[0174] A transparent display panel (110) according to another embodiment of the present invention can adjust the contact area between the first electrode (120) and the conductive organic layer (EOL) by taking into account the limit current of the driving transistor (TFT) of each of the subpixels (SP1, SP2, SP3, SP4). By doing so, the transparent display panel (110) according to another embodiment of the present invention can ensure that the first electrode (120) and the driving transistor (TFT) are electrically separated in the contact area (CA) when foreign matter occurs, even if the driving transistor (TFT) has a low limit current.

[0175] The transparent display panel (110) illustrated in FIGS. 12 to 14 can connect the divided electrodes (121, 122) of the first electrode (120) to a driving transistor (TFT) through a conductive organic layer (EOL) provided between the divided electrodes (121, 122). Since the transparent display panel (110) illustrated in FIGS. 12 to 14 does not have an anode connection electrode (ACE), a transistor connection electrode (TCE), a first contact hole (CH1), and a second contact hole (CH2) between the transmission area (TA) and the subpixels (SP1, SP2, SP3, SP3, SP4), the area of ​​the transmission area (TA) may not be reduced or the transmittance may not be reduced by these. Accordingly, the transparent display panel (110) illustrated in FIGS. 12 to 14 can improve the transmittance compared to the transparent display panel (110) illustrated in FIGS. 2 to 11.

[0176] Although embodiments of the present invention have been described in more detail with reference to the attached drawings, the present invention is not necessarily limited to these embodiments and may be modified in various ways within the scope of the technical spirit of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical spirit of the present invention, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of protection of the present invention shall be interpreted by the claims, and all technical spirits within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0177] 100: Transparent display device 110: Transparent display panel 111: First substrate 112: Second substrate 120: First electrode 121: First split electrode 122: Second split electrode ACE: Anode connecting electrode TCE: Transistor connection electrode EOL: Conductive organic layer OSL: Organic Pattern 125: Bank 130: Organic light-emitting layer 140: Second electrode 150: Encapsulation film CF: Color filter layer

Claims

Claim 1 A transparent display device comprising: a plurality of transparent regions; and a plurality of subpixels disposed between the plurality of transparent regions, wherein each of the plurality of subpixels comprises: a driving transistor comprising an active layer, a gate electrode, a source electrode, and a drain electrode; a light-emitting element comprising a first electrode, a light-emitting layer, and a second electrode; and a conductive organic layer disposed between the driving transistor and the first electrode of the light-emitting element to electrically connect the driving transistor and the first electrode, wherein the first electrode comprises a first split electrode and a second split electrode, and the conductive organic layer is electrically connected to the first split electrode through a first contact hole and electrically connected to the second split electrode through a second contact hole, and comprises an organic pattern disposed on the conductive organic layer, wherein the organic pattern comprises a plurality of patterns, and the plurality of patterns are spaced apart from each other. Claim 2 A transparent display device according to claim 1, wherein the conductive organic layer is directly provided on the upper surface of the source electrode or drain electrode. Claim 3 A transparent display device according to claim 1, further comprising at least one insulating layer provided between the conductive organic layer and the driving transistor, wherein the conductive organic layer is connected to the source electrode or drain electrode of the driving transistor through a third contact hole penetrating the at least one insulating layer. Claim 4 In claim 1, the organic pattern is a transparent display device configured such that at least a portion of the conductive organic layer is exposed on the conductive organic layer. Claim 5 In paragraph 4, the organic pattern is a transparent display device that overlaps with the first contact hole and the second contact hole. Claim 6 In paragraph 4, the organic pattern is a transparent display device having a conductivity lower than that of the conductive organic layer. Claim 7 In paragraph 4, the organic pattern is a transparent display device having a line shape or a dot shape. Claim 8 In claim 4, the plurality of subpixels includes a first subpixel emitting light of a first color and a second subpixel emitting light of a second color, and the organic pattern provided in the first subpixel differs from the organic pattern provided in the second subpixel in at least one of width and separation distance, in a transparent display device. Claim 9 A transparent display device according to claim 8, wherein the driving transistor provided in the first subpixel has a lower limit current than the driving transistor provided in the second subpixel, and the first electrode provided in the first subpixel has a contact area with the conductive organic layer smaller than the first electrode provided in the second subpixel. Claim 10 A transparent display device according to claim 1, wherein the conductive organic layer comprises a flat portion and an uneven pattern portion provided on the flat portion. Claim 11 In claim 1, the conductive organic layer is a transparent display device provided between the transparent region and the first electrode. Claim 12 A transparent display device according to claim 1, further comprising: a transistor connecting electrode extending in the direction of the transmission region from the source electrode or drain electrode of the driving transistor and in contact with the conductive organic layer in at least a portion; a first anode connecting portion having one end connected to the first split electrode and the other end connected to the conductive organic layer through the first contact hole; and a second anode connecting portion having one end connected to the second split electrode and the other end connected to the conductive organic layer through the second contact hole. Claim 13 A transparent display device according to claim 1, wherein the conductive organic layer is provided between the first divided electrode and the second divided electrode, one end of which overlaps with the first divided electrode and the other end of which overlaps with the second divided electrode. Claim 14 A transparent display device comprising: a driving transistor; a conductive organic layer having a first conductivity and electrically connected to the driving transistor; an organic pattern having a second conductivity smaller than the first conductivity, provided to expose at least a portion of the conductive organic layer on the conductive organic layer; a planarization film provided on the conductive organic layer and the organic pattern; a first electrode provided on the planarization film and connected to the conductive organic layer through a contact hole; a light-emitting layer provided on the first electrode; and a second electrode provided on the light-emitting layer, wherein the contact hole penetrates the planarization film. Claim 15 A transparent display device according to claim 14, wherein the first electrode comprises a first split electrode and a second split electrode, and the conductive organic layer is electrically connected to the first split electrode through a first contact hole and electrically connected to the second split electrode through a second contact hole. Claim 16 In claim 15, the first contact hole and the second contact hole each expose at least a portion of the conductive organic layer and at least a portion of the organic pattern in a transparent display device. Claim 17 A transparent display device according to claim 15, wherein when a short circuit occurs between one of the first split electrode and the second split electrode and the second electrode, the conductive organic layer and organic pattern in contact with the split electrode where the short circuit occurred are melted or sublimated, thereby electrically separating the split electrode where the short circuit occurred and the driving transistor. Claim 18 In claim 15, the area of ​​the conductive organic layer exposed by the first contact hole and the second contact hole is different for each subpixel according to the limiting current of the driving transistor of each of the plurality of subpixels in a transparent display device. Claim 19 In claim 14, the above organic pattern comprises a plurality of line patterns, and the plurality of line patterns are a transparent display device in which at least one of the width and the spacing distance differs for each subpixel according to the limiting current of the driving transistor of each of the plurality of subpixels. Claim 20 A transparent display device according to claim 14, further comprising at least one insulating layer provided between the conductive organic layer and the driving transistor, wherein the conductive organic layer is connected to the driving transistor through a third contact hole penetrating the at least one insulating layer.

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