Transparent display device

Abstract

Transparent display device. A transparent display device can improve transmittance and clarity. The transparent display device includes a plurality of first signal lines extending in a first direction and disposed to be spaced apart from each other, a plurality of second signal lines extending in a second direction and disposed to be spaced apart from each other, a transmissive area disposed between two first signal lines adjacent to each other and between two second signal lines adjacent to each other, and a pixel including a plurality of sub-pixels disposed based on an intersection area in which the first signal lines and the second signal lines intersect each other. In each of the plurality of sub-pixels, at least one edge of the sub-pixel facing the transmissive area has an inclination with respect to each of the first signal lines and the second signal lines.

Description

TECHNICAL FIELD

[0001] The disclosure relates to a transparent display device. BACKGROUND

[0002] As the development of an information society, the demand for a display device displaying an image has been increased in various forms. Recently, various types of display devices such as a liquid crystal display (LCD) device, a plasma display panel (PDP) device, and an organic light emitting display (OLED) device, a quantum dot light emitting display (QLED) device, etc. have been widely utilized.

[0003] Recently, research on a transparent display device for allowing a user to view an object or an image disposed on an opposite side of the display device through the display device is actively being conducted.

[0004] The transparent display device includes a display area on which an image is displayed and a non-display area, wherein the display area can include a transmissive area and a non-transmissive area, the transmissive area can transmit external light. The transparent display device can have a high transmittance in the display area through the transmissive area. The transparent display device includes a black matrix between sub-pixels to avoid color mixing, but the black matrix causes transmittance deterioration. SUMMARY

[0005] The disclosure has been made in view of the above problems, and it is an object of the disclosure to provide a transparent display device that can minimize transmittance loss caused by a black matrix.

[0006] Another object of the disclosure is to provide a transparent display device that can improve picture quality definition.

[0007] Another object of the disclosure is to provide a transparent display device that can improve definition of an object or an image disposed on a rear surface.

[0008] In addition to the above-mentioned objects of the disclosure, additional objects and features of the disclosure will be clearly understood by those skilled in the art from the following description of the disclosure.

[0009] According to an aspect of the present disclosure, the above and other objects can be achieved by providing a transparent display device including a plurality of first signal lines extending in a first direction and disposed to be spaced apart from each other, a plurality of second signal lines extending in a second direction and disposed to be spaced apart from each other, a transmissive area disposed between two first signal lines adjacent to each other and between two second signal lines adjacent to each other, and a pixel including a plurality of sub-pixels disposed based on an intersection area in which the first signal lines and the second signal lines intersect each other. In each of the plurality of sub-pixels, at least one edge of the direction toward the transmissive area has an inclination with respect to each of the first signal lines and the second signal lines.

[0010] According to another aspect of the present disclosure, the above and other objects can be achieved by providing a transparent display device including a plurality of first signal lines extending in a first direction and disposed to be spaced apart from each other, a plurality of second signal lines extending in a second direction and disposed to be spaced apart from each other, a transmissive area disposed between two first signal lines adjacent to each other and between two second signal lines adjacent to each other, and a pixel disposed in an intersection area in which the first signal lines and the second signal lines intersect each other, including a first circuit area in which at least one transistor is disposed and a second circuit area in which at least one capacitor is disposed. At least one edge of the direction of the second circuit area toward the transmissive area has an inclination with respect to each of the first signal lines and the second signal lines.

[0011] The transparent display device of the present disclosure can minimize transmittance loss caused by a black matrix.

[0012] The transparent display device of the present disclosure can improve picture quality definition.

[0013] The transparent display device of the present disclosure can improve definition of an object or an image disposed on a rear surface. BRIEF DESCRIPTION OF DRAWINGS

[0014] The above and other objects, features and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0015] Figure 1 FIG. 1 is a perspective view illustrating a transparent display device according to an embodiment of the present disclosure;

[0016] Figure 2 FIG. 2 is a schematic plan view illustrating a transparent display panel;

[0017] Figure 3 FIG. 3 is a schematic view illustrating one embodiment of a pixel disposed in a region A of FIG. 2; Figure 2 FIG. 4 is a schematic view illustrating another embodiment of a pixel disposed in the region A of FIG. 2.

[0018] Figure 4 is a schematic view illustrating a transistor and a capacitor in the region B of Figure 3 ;

[0019] Figure 5 is a schematic view illustrating a first electrode in the region B of Figure 3 ;

[0020] Figure 6 is a cross-sectional view taken along line I-I' of Figure 3 ;

[0021] Figure 7 is a schematic view illustrating another embodiment of a pixel provided in the region A of Figure 2 ;

[0022] Figure 8 is a schematic view illustrating still another embodiment of a pixel provided in the region A of Figure 2 ;

[0023] Figure 9 is a schematic view illustrating yet another embodiment of a pixel provided in the region A of Figure 2 ;

[0024] Figure 10 is a schematic view illustrating a transistor and a capacitor in the region B of Figure 9 ;

[0025] Figure 11 is a schematic view illustrating a first electrode in the region B of Figure 9 ; and

[0026] Figure 12 is a graph illustrating the transparency and aperture ratio of the light emitting portion in each of the comparative example, Embodiment 1, and Embodiment 2. DETAILED DESCRIPTION

[0027] Advantages and features of the present disclosure and a method of achieving the same will be clarified by embodiments described below with reference to the accompanying drawings. The present disclosure may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that the disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Further, the present disclosure is defined only by the scope of the claims.

[0028] The shapes, sizes, ratios, angles, and numbers disclosed in the drawings for describing embodiments of the disclosure are merely examples and thus the disclosure is not limited to the illustrated details. Like reference numerals refer to like elements throughout the specification. In the following description, detailed descriptions of functions or configurations that are related to known functions or configurations will be omitted when it is determined that such detailed description can unnecessarily obscure the gist of the disclosure. In the case where "include", "have", and "comprise" are used in the description of the specification, another part can be added unless "only" is used. Unless otherwise specified, a singular form can include a plural form.

[0029] Although not explicitly described, when an element is explained, the element is explained to include an error range.

[0030] In describing positional relationships, for example, when the positional relationship is described as "on", "above", "below", and "next to", unless "close to" or "directly" is used, one or more portions can be arranged between two other portions.

[0031] It will be understood that, although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element without departing from the scope of the present disclosure.

[0032] In describing elements of the present disclosure, the terms "first", "second", and the like can be used. These terms are intended to identify respective elements from other elements and the basis, order, or number of the respective elements is not limited by these terms. The expression that an element is "connected" or "coupled" to another element should be understood that the element can be directly connected or coupled to the other element, but can be indirectly connected or coupled to the other element (unless specifically mentioned otherwise), or a third element can be interposed between the respective elements.

[0033] As a person of ordinary skill in the art can fully understand, the features of various embodiments of the present disclosure can be coupled or combined with each other in part or as a whole, and can be mutually operable and technically driven in various ways. Embodiments of the present disclosure can be performed independently of each other or can be performed together in a mutual dependency relationship.

[0034] Hereinafter, examples of a transparent display device according to the present disclosure will be described in detail with reference to the accompanying drawings. Where possible, the same reference numerals will be used throughout the drawings to refer to the same or similar components.

[0035] Figure 1is a perspective view illustrating a transparent display apparatus according to one embodiment of the present disclosure, and Figure 2 is a schematic plan view illustrating a transparent display panel.

[0036] Hereinafter, an X-axis indicates a line parallel to a gate line, a Y-axis indicates a line parallel to a data line, and a Z-axis indicates a height direction of the transparent display apparatus 100.

[0037] Although it has been described that the transparent display apparatus 100 is implemented as an organic light emitting display apparatus according to one embodiment of the present disclosure, the transparent display apparatus 100 can be implemented as a liquid crystal display apparatus, a plasma display panel (PDP), a quantum dot light emitting display (QLED), or an electrophoretic display apparatus.

[0038] Referring to Figure 1 and Figure 2 , the transparent display apparatus 100 according to one embodiment of the present disclosure includes a transparent display panel 110, a source driving integrated circuit (IC) 210, a flexible film 220, a circuit board 230, and a timing controller 240.

[0039] The transparent display panel 110 includes a first substrate 111 and a second substrate 112 facing each other. The second substrate 112 can be a package substrate. The first substrate 111 can be a plastic film, a glass substrate, or a silicon wafer substrate formed using a semiconductor process. The second substrate 112 can be a plastic film, a glass substrate, or a package film. The first substrate 111 and the second substrate 112 can be made of a transparent material.

[0040] The first substrate 111 can include 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.

[0041] The display area DA can be provided with the first signal line SL1, the second signal line SL2, and the pixels P, and the non-display area NDA can be provided with a pad area PA for a pad and a gate driver 205.

[0042] The first signal line SL1 can extend in a first direction (X-axis direction) and can cross the second signal line SL2 in the display area DA. The second signal line SL2 can extend in a second direction (Y-axis direction). The pixels P can be disposed in an area in which the first signal line SL1 and the second signal line SL2 cross and emit a predetermined light to display an image.

[0043] The gate driver 205 provides a gate signal to a gate line according to a gate control signal provided from the timing controller 240. The gate driver 205 can be disposed at one side of the display area of the transparent display panel 110, or can be disposed in the non-display area of both peripheral sides of the transparent display panel 110 by a gate-in-panel (GIP) method. In another way, the gate driver 205 can be manufactured in a driving chip, can be mounted on a flexible film, and can be attached to one or both peripheral sides of the display area of the transparent display panel 110 by a tape automated bonding (TAB) method.

[0044] For example, as shown in FIG. 2A, the gate driver 205 can include a first gate driver 205a disposed in the non-display area NDA disposed on the first peripheral side of the display area DA and a second gate driver 205b disposed in the non-display area NDA disposed on the second peripheral side of the display area DA, but is not limited thereto. Figure 2

[0045] If the source driving IC 210 is manufactured in a driving chip, the source driving IC 210 can be mounted on the flexible film 220 by a chip on film (COF) method or a chip on plastic (COP) method.

[0046] The pads such as power pads and data pads can be formed in the pad area PA of the transparent display panel 110. The lines connecting the pads with the source driving IC 210 and the lines connecting the lines of the circuit board 230 with the pads can be formed in the flexible film 220. The flexible film 220 can be attached to the pads using anisotropic conductive film, so that the pads can be connected with the lines of the flexible film 220.

[0047] Figure 3 is a schematic view illustrating one embodiment of a pixel disposed in the area A of Figure 2 .

[0048] Referring to Figure 3 , the transparent display panel 110 can be classified into a display area DA in which pixels P are disposed to display an image and a non-display area NDA in which an image is not displayed.

[0049] ​The display area DA includes a transmissive area TA and a non-transmissive area NTA. The transmissive area TA is an area through which most of the external incident light passes, and the non-transmissive area NTA is an area through which most of the external incident light cannot pass. For example, the transmissive area TA can be an area having a transmittance greater than a % (e.g., 90%), and the non-transmissive area NTA can be an area having a transmittance less than b % (e.g., 50%). At this time, a is greater than b. Due to the transmissive area TA, a user can view an object or a background disposed above the rear surface of the transparent display panel 110.

[0050] The non-transmissive area NTA can be provided with a plurality of first signal lines SL1, a plurality of second signal lines SL2, and pixels P.

[0051] The first signal lines SL1 can extend from the display area DA in a first direction (X-axis direction). The plurality of first signal lines SL1 can be disposed to be spaced apart from each other. For example, the first signal lines SL1 can include a gate line.

[0052] The second signal lines SL2 can extend from the display area DA in a second direction (Y-axis direction) and can cross the first signal lines SL1 in the display area DA. The plurality of second signal lines SL2 can be disposed to be spaced apart from each other.

[0053] The second signal lines SL2 can include a plurality of lines. For example, the second signal lines SL2 can include at least one of a pixel power line VDD, a common power line VSS, a reference line REF, or data lines D1, D2, D3, and D4.

[0054] The pixel power line VDD can supply a first power to a driving transistor of each of the sub-pixels SP1, SP2, SP3, and SP4 disposed in the display area DA. The common power line VSS can supply a second power to a cathode electrode of the sub-pixels SP1, SP2, SP3, and SP4 disposed in the display area DA. At this time, the second power can be a common power commonly supplied to the sub-pixels SP1, SP2, SP3, and SP4.

[0055] When the second signal lines SL2 include the pixel power line VDD, the common power line VSS, the reference line REF, and the data lines D1, D2, D3, and D4, the reference line REF and the pixel power line VDD can be disposed between any one of the plurality of data lines D1, D2, D3, and D4 and the common power line VSS. For example, as shown in FIG. 1B, the first data line D1, the second data line D2, the third data line D3, the reference REF, the pixel power line VDD, the fourth data line D4, and the common power line VSS can be disposed in proper order. Figure 3

[0056] ​The reference line REF and the pixel power line VDD can be branched from a region overlapping a part of the pixel P and connected with the plurality of sub-pixels SP1, SP2, SP3, and SP4. In detail, the reference line REF and the pixel power line VDD can be connected with the circuit part of the plurality of sub-pixels SP1, SP2, SP3, and SP4 and can provide a reference signal or a power signal to each of the sub-pixels SP1, SP2, SP3, and SP4.

[0057] When the reference line REF and the pixel power line VDD are disposed outside the region in which the second signal line SL2 is formed, the deviation of the connection length between the branching point and the circuit part of each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 increases. For example, when the reference line REF is disposed at the leftmost side of the region in which the second signal line SL2 is formed, the connection length from the branching point to the circuit part disposed at the right side of the second signal line SL2 can be longer than the connection length from the branching point to the circuit part disposed at the left side of the second signal line SL2. In this case, a difference can occur between the signal provided to the circuit part disposed at the right side of the second signal line SL2 and the signal provided to the circuit part disposed at the left side of the second signal line SL2.

[0058] In the transparent display panel 110 according to one embodiment of the disclosure, the reference line REF and the pixel power line VDD can be disposed between any one of the plurality of data lines D1, D2, D3, and D4 and the common power line VSS (i.e., in the middle region). That is, the reference line REF and the pixel power line VDD can minimize the deviation of the connection length from the branching point to the circuit part of each of the plurality of sub-pixels SP1, SP2, SP3, and SP4. As a result, the reference line REF and the pixel power line VDD can uniformly provide signals to the circuit part of each of the plurality of sub-pixels SP1, SP2, SP3, and SP4.

[0059] On the other hand, each of the first data line D1, the second data line D2, the third data line D3, and the fourth data line D4 can be connected with one circuit part of the plurality of sub-pixels SP1, SP2, SP3, and SP4 in a region overlapping the pixel P, and thus can provide a data signal to the connected sub-pixel SP1, SP2, SP3, and SP4. Since each of the first data line D1, the second data line D2, the third data line D3, and the fourth data line D4 is connected with only one of the sub-pixels SP1, SP2, SP3, and SP4 in the region overlapping the pixel P, the deviation of the connection length does not need to be considered among the sub-pixels SP1, SP2, SP3, and SP4.

[0060] The transmission region TA can be positioned between adjacent first signal lines SL1. Additionally, the transmission region TA can be positioned between adjacent second signal lines SL2. That is, the transmission region TA can be surrounded by two first signal lines SL1 and two second signal lines SL2.

[0061] Pixel P is located in the intersection area IA where the first signal line SL1 and the second signal line SL2 intersect, and displays an image by emitting predetermined light. The light-emitting area EA may correspond to the area in pixel P used for emitting light.

[0062] like Figure 3 As shown, each pixel P may include a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3, and a fourth sub-pixel SP4. The first sub-pixel SP1 may include a first emitting region EA1, configured to overlap with the first signal line SL1 and emit light of a first color. The second sub-pixel SP2 may include a second emitting region EA2, configured to overlap with the second signal line SL2 and emit light of a second color. The third sub-pixel SP3 may include a third emitting region EA3, configured to face the first sub-pixel SP1 based on the intersection region IA and emit light of a third color. The fourth sub-pixel SP4 may include a fourth emitting region EA4, configured to face the second sub-pixel SP2 based on the intersection region IA and emit light of a fourth color.

[0063] As an example, the first to fourth emitting regions EA1, EA2, EA3, and EA4 can each emit light of a different corresponding color. For example, the first emitting region EA1 can emit green light, and the second emitting region EA2 can emit red light. The third emitting region EA3 can emit blue light, and the fourth emitting region EA4 can emit white light. However, the emitting regions are not limited to this example.

[0064] As another example, at least two of the first to fourth emitting regions EA1, EA2, EA3, and EA4 can emit light of the same color. For example, the first emitting region EA1 and the second emitting region EA2 can emit green light, the third emitting region EA2 can emit red light, and the fourth emitting region EA4 can emit blue light. However, the emitting regions are not limited to this example.

[0065] Furthermore, the arrangement order of subpixels SP1, SP2, SP3, and SP4 can be changed in various ways.

[0066] In the following text, for ease of description, the first sub-pixel SP1 is the green sub-pixel used to emit green light, the second sub-pixel SP2 is the red sub-pixel used to emit red light, the third sub-pixel SP3 is the blue sub-pixel used to emit blue light, and the fourth sub-pixel SP4 is the white sub-pixel used to emit white light.

[0067] In the transparent display panel 110 according to one embodiment of the disclosure, the pixel P can include a plurality of sides directed toward the transmissive area TA, and each of the plurality of sides of the pixel P is inclined with respect to each of the first signal line SL1 and the second signal line SL2.

[0068] In detail, the pixel P can include a first side S1 and a second side S2 directed toward the transmissive area TA, a third side S3 facing the first side S1, and a fourth side S4 facing the second side S2. For example, the pixel P can have a rhombus shape constituted by the four sides S1, S2, S3, and S4. In this case, according to the size and arrangement of the pixel P, the transmissive area TA can have a rhombus shape, a hexagonal shape, or an octagonal shape.

[0069] Each of the first side S1, the second side S2, the third side S3, and the fourth side S4 of the pixel P can be inclined without being parallel or perpendicular to the first signal line SL1. That is, each of the first side S1, the second side S2, the third side S3, and the fourth side S4 of the pixel P can have an inclination of 0° to 90° with respect to the first signal line SL1. For example, each of the first side S1, the second side S2, the third side S3, and the fourth side S4 of the pixel P can be constituted by a diagonal line having an inclination of 30° to 60° with respect to the first signal line SL1.

[0070] In addition, each of the first side S1, the second side S2, the third side S3, and the fourth side S4 of the pixel P can be inclined without being parallel or perpendicular to the second signal line SL2. That is, each of the first side S1, the second side S2, the third side S3, and the fourth side S4 of the pixel P can have an inclination of 0° to 90° with respect to the second signal line SL2. For example, each of the first side S1, the second side S2, the third side S3, and the fourth side S4 of the pixel P can be constituted by a diagonal line having an inclination of 30° to 60° with respect to the second signal line SL2.

[0071] Meanwhile, each of the first side S1, the second side S2, the third side S3, and the fourth side S4 of the pixel P can include a side of each of the two or more sub-pixels SP1, SP2, SP3, and SP4.

[0072] Each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 can include at least two sides directed toward the transmissive area TA. For example, each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 can have the same shape as the pixel P, for example, a rhombus shape.

[0073] In this case, each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 can include two edges directed toward the transmissive area TA. The first sub-pixel SP1 can include a first edge S11 and a second edge S12 directed toward the transmissive area TA, the second sub-pixel SP2 can include a first edge S21 and a second edge S22 directed toward the transmissive area TA, the third sub-pixel SP3 can include a first edge S31 and a second edge S32 directed toward the transmissive area TA, and the fourth sub-pixel SP4 can include a first edge S41 and a second edge S42 directed toward the transmissive area TA.

[0074] The first edge S1 of the pixel P can include the first edge S11 of the first sub-pixel SP1 and the first edge S21 of the second sub-pixel SP2, and the second edge S2 of the pixel P can include the second edge S2 of the first sub-pixel SP1 and the first edge S41 of the fourth sub-pixel SP4. The third edge S3 of the pixel P can include the second edge S42 of the fourth sub-pixel SP4 and the first edge S31 of the third sub-pixel SP3, and the fourth edge S4 of the pixel P can include the second edge S32 of the third sub-pixel SP3 and the second edge S22 of the second sub-pixel SP2.

[0075] Therefore, the first edges S11, S21, S31, and S41 and the second edges S12, S22, S32, and S42 of each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 are inclined with respect to each of the first signal line SL1 and the second signal line SL2 in the same manner as the plurality of edges S1, S2, S3, and S4 of the pixel P.

[0076] The non-transmissive area NTA can include the light emitting area EA and the non-light emitting area NEA.

[0077] The light emitting area EA can be provided with the plurality of sub-pixels SP1, SP2, SP3, and SP4 that emit light of a predetermined color, and can include a first light emitting area EA1, a second light emitting area EA2, a third light emitting area EA3, and a fourth light emitting area EA4 provided in the plurality of sub-pixels SP1, SP2, SP3, and SP4, respectively.

[0078] The non-light emitting area NEA can not emit light, and can include a first non-light emitting area NEA1 provided between the sub-pixels SP1, SP2, SP3, and SP4, a second non-light emitting area NEA2 provided between each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 and the transmissive area TA, a third non-light emitting area NEA3 provided between the pixels P provided adjacent to each other in the first direction, and a fourth non-light emitting area NEA4 provided between the pixels P provided adjacent to each other in the second direction.

[0079] The non-emitting area NEA can be provided with a black matrix BM. The black matrix BM can include a first black matrix BM1, a second black matrix BM2, a third black matrix BM3, and a fourth black matrix BM4.

[0080] The first black matrix BM1 can be provided between the plurality of sub-pixels SP1, SP2, SP3, and SP4 to prevent color mixing between the plurality of sub-pixels SP1, SP2, SP3, and SP4.

[0081] The second black matrix BM2 can be provided between each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 and the transmissive area TA to prevent light emitted from each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 from being seen as light of another color depending on a viewing angle. In an embodiment, the second black matrix BM2 can not be provided between the fourth sub-pixel SP4 and the transmissive area TA. When the fourth sub-pixel SP4 is a white pixel for emitting white light, the white light emitted from the fourth sub-pixel SP4 does not change depending on a viewing angle. Accordingly, the second black matrix BM2 is not provided between the fourth sub-pixel SP4 and the transmissive area TA, so that the transmittance can be improved and light loss caused by the second black matrix BM2 can be reduced.

[0082] The third black matrix BM3 can be provided between the pixels P disposed adjacent to each other in the first direction, thereby preventing color mixing between the pixels P disposed adjacent to each other in the first direction and preventing external incident light from being reflected in the first signal line SL1.

[0083] The fourth black matrix BM4 can be provided between the pixels P disposed adjacent to each other in the second direction, thereby preventing color mixing between the pixels P disposed adjacent to each other in the second direction and preventing external incident light from being reflected in the second signal line SL2.

[0084] Since the black matrix BM is made of a material that blocks or absorbs light, light emitted from the sub-pixels SP1, SP2, SP3, and SP4 can not pass through the area in which the black matrix BM is formed, and external incident light can not pass through the area in which the black matrix BM is formed. Accordingly, the area in which the black matrix BM is formed corresponds to the non-emitting area NEA that does not emit light.

[0085] Since the black matrix BM blocks or absorbs light, the black matrix BM can greatly affect the transmittance of the transparent display panel 110. In detail, as the area in which the black matrix BM is formed (i.e., the non-emitting area NEA) increases, the transmittance of the transparent display panel 110 can decrease. On the other hand, as the non-emitting area NEA decreases, the transmittance of the transparent display panel 110 can increase.

[0086] The transparent display panel 110 according to one embodiment of the present disclosure has a pixel P structure for reducing a region (i.e., a non-emitting area NEA) in which the black matrix BM is formed. In the transparent display panel 110 according to one embodiment of the present disclosure, the pixel P is disposed in an intersection area IA in which the first signal line SL1 and the second signal line SL2 intersect each other, and a plurality of sides S1, S2, S3, and S4 of the pixel P are inclined with respect to each of the first signal line SL1 and the second signal line SL2. In the transparent display panel 110 having the pixel P as described above, the plurality of sides S1, S2, S3, and S4 can reduce an outer length of the transmissive area TA, as compared to a transparent display panel having a pixel P parallel or perpendicular to the first signal line SL1 and the second signal line SL2.

[0087] That is, the transparent display panel 110 according to one embodiment of the present disclosure can reduce a total size of the second black matrix BM2 disposed between each of the sub-pixels SP1, SP2, SP3, and SP4 and the transmissive area TA, the third black matrix BM3 disposed between the pixels P disposed adjacent to each other in the first direction, and the fourth black matrix BM4 disposed between the pixels P disposed adjacent to each other in the second direction. Accordingly, the transparent display panel 110 according to one embodiment of the present disclosure can improve transmittance as the region (i.e., the non-emitting area NEA) in which the black matrix BM is formed is reduced.

[0088] In addition, in the transparent display panel 110 according to one embodiment of the present disclosure, one pixel P is disposed in an intersection area IA in which the first signal line SL1 and the second signal line SL2 intersect each other, and the pixel P includes a plurality of sub-pixels SP1, SP2, SP3, and SP4 disposed based on the intersection area IA. In the transparent display panel 110 according to one embodiment of the present disclosure, the plurality of sub-pixels SP1, SP2, SP3, and SP4 are disposed together based on the intersection area IA, and thus the quality of definition and readability can be improved.

[0089] In addition, in the transparent display panel 110 according to one embodiment of the present disclosure, each of the edges S1, S2, S3, and S4 of the pixel P can include an edge of each of the at least two sub-pixels SP1, SP2, SP3, and SP4. In this case, in the transparent display panel 110 according to one embodiment of the present disclosure, the first non-emitting area NEA1 provided between the plurality of sub-pixels SP1, SP2, SP3, and SP4 can be inclined with respect to each of the first signal line SL1 and the second signal line SL2. For example, the black matrix BM can be provided from the intersection area IA to a middle point of each of the edges S1, S2, S3, and S4 of the pixel P. In this way, the transparent display panel 110 provided with the black matrix BM can reduce the first non-emitting area NEA1, as compared with a transparent display panel provided with the black matrix BM between the plurality of sub-pixels SP1, SP2, SP3, and SP4 along the first signal line SL1 or the second signal line SL2.

[0090] That is, the transparent display panel 110 according to one embodiment of the present disclosure can reduce the size of the first black matrix BM1 provided between the sub-pixels SP1, SP2, SP3, and SP4. Accordingly, the transparent display panel 110 according to one embodiment of the present disclosure can improve the transmittance as the area in which the black matrix BM is formed (i.e., the non-emitting area NEA) is reduced.

[0091] Hereinafter, a description will be given of a structure of the pixel P with reference to Figures 4 to 6 The structure of the pixel P will be described in more detail.

[0092] Figure 4 is a schematic view illustrating a transistor and a capacitor in the region B of Figure 3 is a schematic view illustrating a first electrode in the region B of Figure 5 is a schematic view illustrating a first electrode in the region B of Figure 3 is a cross-sectional view taken along line I-I' of Figure 6 Figure 3 With reference to

[0093] The pixel P can include a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3, and a fourth sub-pixel SP4, with reference to Figures 4 to 6 Each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 can include a circuit element including at least one or more transistors TR1, TR2, and TR3, a capacitor CST, and a light emitting diode.

[0094] The at least one or more transistors can include a driving transistor TR1, a switching transistor TR2, and a sensing transistor TR3.

[0095] ​The switching transistor TR2 switches in accordance with a strobe signal supplied to a strobe line, and charges a data voltage supplied from a data line into the capacitor CST.

[0096] The sensing transistor TR3 is used to sense a threshold voltage deviation of the driving transistor TR1, which causes a quality deterioration, in accordance with a sensing signal.

[0097] The driving transistor TR1 switches in accordance with a data voltage charged into the capacitor CST, to generate a data current from a power supply supplied from a pixel power supply line VDD, and then supplies the generated data current to the first electrodes 120 of the sub-pixels SP1, SP2, SP3, and SP4.

[0098] The driving transistor TR1 can include an active layer ACT, a gate electrode GE, a source electrode SE, and a drain electrode DE, and the capacitor CST can include a first capacitor electrode CSTE1, a second capacitor electrode CSTE2, and a third capacitor electrode CSTE3.

[0099] In detail, the first capacitor electrode CSTE1 can be disposed on the first substrate 111. The first capacitor electrode CSTE1 can serve as a light-shielding layer for shielding external light entering the active layer ACT from a region TRA in which the driving transistor TR1 is formed. The first capacitor electrode CSTE1 can be formed of a single layer or a multi-layer made of any one of Mo, Al, Cr, Au, Ti, Ni, Nd, and Cu, or an alloy thereof.

[0100] A buffer film BF can be disposed on the first capacitor electrode CSTE1 and a light-shielding layer (not shown). The buffer film BF is intended to protect the transistors TR1, TR2, and TR3 and the capacitor CST from moisture permeating through the first substrate 111, which is susceptible to moisture permeability, and can be formed of an inorganic film such as a silicon oxide film (SiOx), a silicon nitride film (SiNx), or a multi-layer film of SiOx and SiNx.

[0101] The active layer ACT can be disposed on the buffer film BF. The active layer ACT can be formed of a silicon-based semiconductor material or an oxide-based semiconductor material.

[0102] A gate insulating film GI can be disposed on the active layer ACT. The gate insulating film GI can be formed of an inorganic film such as a silicon oxide film (SiOx), a silicon nitride film (SiNx), or a multi-layer film of SiOx and SiNx.

[0103] The gate electrode GE and the second capacitor electrode CSTE2 can be provided over the gate insulating film GI. The second capacitor electrode CSTE2 can extend from the gate electrode GE. The gate electrode GE and the second capacitor electrode CSTE2 can be formed of a single layer or a plurality of layers made of any one of Mo, Al, Cr, Au, Ti, Ni, Nd, and Cu, or an alloy thereof.

[0104] Although Figure 6 The driving transistor TR1 is exemplified to be formed in a top gate method in which the gate electrode GE is provided over the active layer ACT, but the driving transistor TR1 is not limited to Figure 6 the example. The driving transistor TR1 can be formed in a bottom gate method in which the gate electrode GE is provided under the active layer ACT, or in a dual gate method in which the gate electrode GE is provided over and under the active layer ACT.

[0105] An interlayer dielectric film ILD can be provided over the gate electrode GE and the second capacitor electrode CSTE2. The interlayer dielectric film ILD can be made of an inorganic film such as a silicon oxide film (SiOx), a silicon nitride film (SiNx), or a multilayer film of SiOx and SiNx.

[0106] The source electrode SE, the drain electrode DE, and the third capacitor electrode CSTE3 can be provided over the interlayer dielectric film ILD. The third capacitor electrode CSTE3 can extend from the source electrode SE. The source electrode SE and the drain electrode DE can be connected to the active layer ACT through contact holes that pass through the gate insulating film GI and the interlayer dielectric film ILD.

[0107] The source electrode SE, the drain electrode DE, and the third capacitor electrode CSTE3 can be made of a single layer or a plurality of layers of any one of Mo, Al, Cr, Au, Ti, Ni, Nd, and Cu, or an alloy thereof.

[0108] A passivation film PAS for insulating the driving transistor TR1 from the capacitor CST can be provided over the source electrode SE, the drain electrode DE, and the third capacitor electrode CSTE3. The passivation film PAS can be made of an inorganic film such as a silicon oxide film (SiOx), a silicon nitride film (SiNx), or a multilayer film of SiOx and SiNx.

[0109] Although Figure 6 The capacitor CST is exemplified to include the first capacitor electrode CSTE1, the second capacitor electrode CSTE2, and the third capacitor electrode CSTE3, but the capacitor is not limited to Figure 6 the example. The capacitor CST can include at least two or more of the capacitor electrodes.

[0110] The circuit element provided as described above can include a first circuit region TRA provided with at least one or more transistors TR1, TR2, and TR3 and a second circuit region CSTA provided with a capacitor CST, as shown in Figure 4

[0111] The first circuit region TRA can include a first transistor region TRA1 disposed between the first signal line SL1 and the second signal line SL2, a second transistor region TRA2 disposed symmetrically with the first transistor region TRA1 based on the second signal line SL2, a third transistor region TRA3 disposed symmetrically with the second transistor region TRA2 based on the first signal line SL1, and a fourth transistor region TRA4 disposed symmetrically with the first transistor region TRA1 based on the second signal line SL2.

[0112] The driving transistor TR1, the switching transistor TR2, and the sensing transistor TR3 can be disposed within each of the first transistor region TRA1, the second transistor region TRA2, the third transistor region TRA3, and the fourth transistor region TRA4.

[0113] The second circuit region CSTA can be disposed between the first circuit region TRA and the transmission region TA. In detail, the second circuit region CSTA can include a first capacitor region CSTA1 disposed between the first transistor region TRA1 and the transmission region TA, a second capacitor region CSTA2 disposed between the second transistor region TRA2 and the transmission region TA, a third capacitor region CSTA3 disposed between the third transistor region TRA3 and the transmission region TA, and a fourth capacitor region CSTA4 disposed between the fourth transistor region TRA4 and the transmission region TA.

[0114] The capacitor CST can be disposed in each of the first capacitor region CSTA1, the second capacitor region CSTA2, the third capacitor region CSTA3, and the fourth capacitor region CSTA4.

[0115] ​The drive transistor TR1 of the first transistor region TRA1 can be switched according to the data voltage charged in the capacitor CST of the first capacitor region CSTA1 to supply a power supplied from the pixel power supply line VDD to the first electrode 120 of the first sub-pixel SP1. Also, the drive transistor TR1 of the second transistor region TRA2 can be switched according to the data voltage charged in the capacitor CST of the second capacitor region CSTA2 to supply a power supplied from the pixel power supply line VDD to the first electrode 120 of the second sub-pixel SP2. The drive transistor TR1 of the third transistor region TRA3 can be switched according to the data voltage charged in the capacitor CST of the third capacitor region CSTA3 to supply a power supplied from the pixel power supply line VDD to the first electrode 120 of the third sub-pixel SP3. The drive transistor TR1 of the fourth transistor region TRA4 can be switched according to the data voltage charged in the capacitor CST of the fourth capacitor region CSTA4 to supply a power supplied from the pixel power supply line VDD to the first electrode 120 of the fourth sub-pixel SP4.

[0116] In the transparent display panel 110 according to one embodiment of the present disclosure, the first circuit region TRA and the second circuit region CSTA can be disposed not to overlap the first signal line SL1 and the second signal line SL2. In the transparent display panel 110 according to one embodiment of the present disclosure, the at least one or more transistors TR1, TR2, and TR3 and the capacitor CST can not overlap the first signal line SL1 and the second signal line SL2, thereby preventing a parasitic capacitance from being generated between the electrodes overlapping each other.

[0117] Also, in the transparent display panel 110 according to one embodiment of the present disclosure, the first circuit region TRA can be disposed closer to the intersection region IA than the second circuit region CSTA. The at least one or more transistors TR1, TR2, and TR3 disposed in the first circuit region TRA can be connected with a connection line branched from at least one of the first signal line SL1 or the second signal line SL2. In the transparent display panel 110 according to one embodiment of the present disclosure, the first circuit region TRA can be disposed adjacent to the intersection region IA, thereby minimizing the length of the connection line used to connect the transistors TR1, TR2, and TR3 with the signal lines SL1 and SL2. As a result, the transparent display panel 110 according to one embodiment of the present disclosure can minimize the loss of voltage transmitted from the first signal line SL1 or the second signal line SL2 due to resistance.

[0118] Meanwhile, in the transparent display panel 110 according to one embodiment of the disclosure, the second circuit area CSTA can be disposed between the first circuit area TRA and the transmissive area TA. In this case, the shape of the transmissive area TA can be determined by the capacitor CST disposed in the second circuit area CSTA.

[0119] In the capacitor CST, at least one side facing the transmissive area TA can have the same shape as that of the side of the pixel P. In detail, in the capacitor CST, at least one side facing the transmissive area TA can be inclined with respect to each of the first signal line SL1 and the second signal line SL2.

[0120] The capacitor CST disposed in each of the first capacitor area CSTA1, the second capacitor area CSTA2, the third capacitor area CSTA3, and the fourth capacitor area CSTA4 can include a first side CS1 facing the transmissive area TA.

[0121] The first side CS1 of the capacitor CST can be inclined not to be parallel or perpendicular to the first signal line SL1. That is, the first side CS1 of the capacitor CST can have an inclination of 0° to 90° with respect to the first signal line SL1. For example, the first side CS1 of the capacitor CST can be constituted by a straight line having an inclination of 30° to 60° with respect to the first signal line SL1.

[0122] In addition, the first side CS1 of the capacitor CST can be inclined not to be parallel or perpendicular to the second signal line SL2. That is, the first side CS1 of the capacitor CST can have an inclination of 0° to 90° with respect to the second signal line SL2. For example, the first side CS1 of the capacitor CST can be constituted by a straight line having an inclination of 30° to 60° with respect to the second signal line SL2.

[0123] The capacitor CST can be disposed to have the widest area in an area excluding the second circuit area CSTA, the first signal line SL1, and the second signal line SL2 from the pixel P. To this end, in the transparent display panel 110 according to one embodiment of the disclosure, the first side CS1 of the capacitor CST can have the same shape as that of the side of the sub-pixel SP1, SP2, SP3, and SP4 facing the transmissive area TA. In addition, in the transparent display panel 110 according to one embodiment of the disclosure, the end of the first side CS1 of the capacitor CST can be equal to that of the side of the sub-pixel SP1, SP2, SP3, and SP4 facing the transmissive area TA. In one embodiment, the capacitor CST can have the same end as that of the first electrode 120 at the side facing the transmissive area TA.

[0124] The transparent display panel 110 according to one embodiment of the disclosure as described above can secure the maximum capacity of the capacitor CST and improve the brightness.

[0125] In addition, in the transparent display panel 110 according to one embodiment of the disclosure, the shape of the transmissive area TA can be freely changed depending on the shape of the first side CS1 of the capacitor CST, and thus the design freedom of the transmissive area TA can be obtained without loss of transmittance.

[0126] Referring again to Figure 6 , a planarization film PLN for planarizing a step difference caused by the driving transistor TR1 and the capacitor CST can be disposed on the passivation film PAS. The planarization film PLN can be formed of an organic film such as an acrylic resin, an epoxy resin, a phenol resin, a polyamide resin, and a polyimide resin.

[0127] A light emitting diode composed of the first electrode 120, the organic light emitting layer 130, and the second electrode 140, and the bank 125 can be disposed on the planarization film PLN.

[0128] The first electrode 120 can be disposed on the planarization film PLN of each of the sub-pixels SP1, SP2, SP3, and SP4. The first electrode 120 is not disposed in the transmissive area TA.

[0129] The first electrode 120 can be connected with the driving transistor TR1. In detail, the first electrode 120 can be connected to one of the source SE and the drain DE through a contact hole passing through the planarization film PLN. For example, the first electrode 120 can be connected to the source SE or the third capacitor electrode CSTE3 extending from the source SE through a contact hole passing through the planarization film PLN.

[0130] In one embodiment, as Figure 5 indicated, the first electrode 120 can include a first anode electrode AE1, a second anode electrode AE2, and a connection electrode CE.

[0131] The first anode electrode AE1 and the second anode electrode AE2 can be spaced apart from each other on the same layer. The connection electrode CE can be formed on the same layer as the first anode electrode AE1 and the second anode electrode AE2 to connect the first anode electrode AE1 and the second anode electrode AE2. The first anode electrode AE1, the second anode electrode AE2, and the connection electrode CE can be formed in one body.

[0132] The connection electrode CE can include a first connection part CE1, a second connection part CE2, a third connection part CE3, and a fourth connection part CE4. The first connection part CE1 can extend as much as a predetermined length from the first anode electrode AE1 toward the transmission area TA, and the second connection part CE2 can extend as much as a predetermined length from the second anode electrode AE2 toward the transmission area TA. The third connection part CE3 can connect the first connection part CE1 and the second connection part CE2. The fourth connection part CE4 can extend from the third connection part CE3, and can be electrically connected with the source SE or the drain DE of the driving transistor TR1 through a contact hole. Although Figure 5 It is shown that the connection electrode CE includes the fourth connection part CE4, but the present disclosure is not limited to Figure 5 the example. The fourth connection part CE4 can be omitted from the connection electrode CE. In this case, the third connection part CE3 can be electrically connected with the source SE or the drain DE of the driving transistor TR1 through a contact hole.

[0133] In the transparent display panel 110 according to one embodiment of the present disclosure, when any one of the first anode electrode AE1 and the second anode electrode AE2 is operated incorrectly due to a particle that can occur during a process, at least one of the first connection part CE1, the second connection part CE2, the third connection part CE3, or the fourth connection part CE4 of the connection electrode CE can be subjected to a short circuit to be repaired. In addition, the transparent display panel 110 according to one embodiment of the present disclosure can repair the anode electrode subjected to the short circuit by connecting the corresponding anode electrode to the anode electrode of another sub-pixel adjacent thereto using a repair line (not shown).

[0134] In the transparent display panel 110 according to one embodiment of the present disclosure, the first electrode 120 can be formed such that the connection electrode CE of one of the sub-pixels SP1, SP2, SP3, and SP4 can be disposed only at each of the plurality of sides S1, S2, S3, and S4 of the pixel P. For example, at the first side S1 of the pixel P, the connection electrode CE of the first electrode 120 of the first sub-pixel SP1 can protrude toward the transmission area TA, and at the second side S2 of the pixel P, the connection electrode CE of the first electrode 120 of the fourth sub-pixel SP4 can protrude toward the transmission area TA. At the third side S3 of the pixel P, the connection electrode CE of the first electrode 120 of the third sub-pixel SP3 can protrude toward the transmission area TA, and at the fourth side S4 of the pixel P, the connection electrode CE of the first electrode 120 of the second sub-pixel SP2 can protrude toward the transmission area TA.

[0135] In this way, in the transparent display panel 110 according to one embodiment of the present disclosure, the connection electrodes CE of the sub-pixels SP1, SP2, SP3, and SP4 can be provided to be spaced apart from each other, if possible, so that damage to the connection electrodes CE of the sub-pixels SP1, SP2, SP3, and SP4 adjacent to each other during the repair process can be prevented.

[0136] Although Figure 5 The first electrode 120 is shown to include the first anode electrode AE1, the second anode electrode AE2, and the connection electrode CE, the present disclosure is not limited to Figure 5 The first electrode 120 can include one anode electrode.

[0137] The first electrode 120 can be made of a high-reflectivity metal material such as a deposition structure of Al and Ti (Ti / Al / Ti), a deposition structure of Al and ITO (ITO / Al / ITO), an Ag alloy, and a deposition structure of an Ag alloy and ITO (ITO / Ag alloy / ITO). The Ag alloy can be an alloy of Ag, Pd, and Cu. The first electrode 120 can be an anode electrode.

[0138] The bank 125 can be provided on the planarization film PLN. Also, the bank 125 can be formed to cover edges of the first electrode 120 and partially expose the first electrode 120. In detail, the bank 125 can be formed to cover edges of each of the first anode electrode AE1 and the second anode electrode AE2 and expose a portion of each of the first anode electrode AE1 and the second anode electrode AE2.

[0139] The bank 125 can define light emitting areas EA1, EA2, EA3, and EA4 of the sub-pixels SP1, SP2, SP3, and SP4, respectively. The light emitting areas EA1, EA2, EA3, and EA4 of the sub-pixels SP1, SP2, SP3, and SP4 indicate areas in which the first electrode 120, the organic light emitting layer 130, and the second electrode 140 are sequentially deposited and then 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, since an area in which the bank 125 is formed does not emit light, the area can become a non-light emitting area NEA, and an area in which the bank 125 is not formed and the first electrode 120 is exposed can become a light emitting area EA.

[0140] The bank 125 can be formed of an organic film such as an acrylic resin, an epoxy resin, a phenol resin, a polyamide resin, and a polyimide resin.

[0141] The organic light emitting layer 130 can be disposed on the first electrode 120. The organic light emitting layer 130 can 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.

[0142] In one embodiment, the organic light emitting layer 130 can be a common layer commonly formed in the sub-pixels SP1, SP2, SP3, and SP4. At this time, the light emitting layer 130 can be a white light emitting layer for emitting white light.

[0143] In another embodiment, the organic light emitting layer 130 can include light emitting layers respectively formed for the sub-pixels SP1, SP2, SP3, and SP4, as shown in Figure 6 For example, a green light emitting layer for emitting green light can be formed in the first sub-pixel SP1, a red light emitting layer for emitting red light can be formed in the second sub-pixel SP2, a blue light emitting layer for emitting blue light can be formed in the third sub-pixel SP3, and a white light emitting layer for emitting white light can be formed in the fourth sub-pixel SP4. In this case, the light emitting layer of the organic light emitting layer 130 is not formed in the transmissive area TA.

[0144] The second electrode 140 can be disposed on the organic light emitting layer 130 and the bank 125. The second electrode 140 can be disposed in the transmissive area TA and the non-transmissive area NTA including the light emitting area EA, but is not limited thereto. The second electrode 140 is disposed only in the non-transmissive area NTA including the light emitting area EA, and can not be disposed in the transmissive area TA to improve transmittance.

[0145] The second electrode 140 can be a common layer commonly formed for the sub-pixels SP1, SP2, SP3, and SP4 to apply the same voltage to the sub-pixels. The second electrode 140 can be formed of a transparent conductive material (TCO) such as ITO and IZO, which can transmit light, or can be formed of a semi-transmissive conductive material such as Mg, Ag, or an alloy of Mg and Ag. When the second electrode 140 is formed of a semi-transmissive conductive material, light emitting efficiency can be improved by a microcavity. The second electrode 140 can be a cathode electrode.

[0146] The encapsulation film 150 can be disposed on the light emitting diode. The encapsulation film 150 can be formed on the second electrode 140 to cover the second electrode 140. The encapsulation 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 encapsulation film 150 can include at least one inorganic film and at least one organic film.

[0147] Meanwhile, although Figure 6A cover layer can be additionally formed between the second electrode 140 and the encapsulation film 150, which is not shown.

[0148] As described with reference to Figure 3 , the black matrix BM can include a first black matrix BM1 disposed between the plurality of sub-pixels SP1, SP2, SP3, and SP4, a second black matrix BM2 disposed between each of the plurality of sub-pixels SP1, SP2, SP3, and SP4 and the transmissive area TA, a third black matrix BM3 disposed between the pixels P disposed adjacent to each other in the first direction, and a fourth black matrix BM4 disposed between the pixels P disposed adjacent to each other in the second direction.

[0149] In one embodiment, the second black matrix BM2 can not be disposed between the fourth sub-pixel SP4 and the transmissive area TA. Since white light emitted from the fourth sub-pixel SP4 does not vary depending on a viewing angle, the transparent display panel 110 according to one embodiment of the disclosure can improve transmittance and reduce light loss caused by the second black matrix BM2 because the second black matrix BM2 is not disposed between the fourth sub-pixel SP4 and the transmissive area TA.

[0150] In one embodiment, the second black matrix BM2 can be provided with an opening area OA for exposing a connection electrode CE of the first electrode 120 disposed in each of the plurality of sub-pixels SP1, SP2, SP3, and SP4. During a repair process, a laser can irradiate the connection electrode CE of the first electrode 120. In order to irradiate the laser to an accurate position, the connection electrode CE of the first electrode 120 needs to be exposed without being covered by the second black matrix BM2.

[0151] The aforementioned black matrix BM can include a material that absorbs light, for example, a black dye that completely absorbs light in a visible light wavelength range.

[0152] The color filter layer 170 can define a non-transmissive area NTA in the display area DA. In detail, an area in which the color filter CF and the black matrix BM are disposed can become the non-transmissive area NTA, and other areas can become the transmissive area TA.

[0153] Figure 7 is a schematic view illustrating another embodiment of a pixel disposed in Figure 2 Area A of FIG. 1A.

[0154] The pixel shown in Figure 7 is substantially the same as the pixel shown in Figure 3 . Hereinafter, based on the difference from the pixel shown in Figure 3 , the pixel shown in Figure 7The description of the illustrated pixel, and detailed description of elements other than the black matrix BM is omitted.

[0155] The transparent display panel 110 is classified into a display area DA provided with pixels P to display an image and a non-display area NDA not to display an image. The display area DA includes a transmissive area TA and a non-transmissive area NTA.

[0156] The non-transmissive area NTA can be provided with a first signal line SL1 extending in a first direction (X-axis direction), a second signal line SL2 extending in a second direction (Y-axis direction), and the pixels P disposed in an intersection area IA where the first signal line SL1 and the second signal line SL2 intersect each other.

[0157] Each of the pixels P can include a first sub-pixel SP1 disposed to overlap a portion of the first signal line SL1, a second sub-pixel SP2 disposed to overlap a portion of the second signal line SL2, a third sub-pixel SP3 disposed to face the first sub-pixel SP1 based on the intersection area IA, and a fourth sub-pixel SP4 disposed to face the second sub-pixel SP2 based on the intersection area IA.

[0158] The non-transmissive area NTA can include a light emitting area EA and a non-light emitting area NEA.

[0159] The light emitting area EA can be provided with a plurality of sub-pixels SP1, SP2, SP3, and SP4 emitting light of a predetermined color, and can include a first light emitting area EA1, a second light emitting area EA2, a third light emitting area EA3, and a fourth light emitting area EA4 disposed in the plurality of sub-pixels SP1, SP2, SP3, and SP4, respectively.

[0160] The non-light emitting area NEA can not emit light, and can include a first non-light emitting area NEA1 disposed between the plurality of sub-pixels SP1, SP2, SP3, and SP4, a third non-light emitting area NEA3 disposed between the pixels P disposed adjacent to each other in the first direction, and a fourth non-light emitting area NEA4 disposed between the pixels P disposed adjacent to each other in the second direction.

[0161] The non-light emitting area NEA can be provided with a black matrix BM. The black matrix BM can include a first black matrix BM1 disposed between the plurality of sub-pixels SP1, SP2, SP3, and SP4, a third black matrix BM3 disposed between the pixels P disposed adjacent to each other in the first direction, and a fourth black matrix BM4 disposed between the pixels P disposed adjacent to each other in the second direction.

[0162] Since the black matrix BM is made of a material that blocks or absorbs light, it can significantly affect the transmittance of the transparent display panel 110. Specifically, the transmittance of the transparent display panel 110 can decrease as the area where the black matrix BM is formed (i.e., the non-light-emitting area NEA) increases. On the other hand, the transmittance of the transparent display panel 110 can increase as the non-light-emitting area NEA decreases.

[0163] and Figure 3 Compared to the transparent display panel 110 shown, the transparent display panel 110 according to another embodiment of the present disclosure does not have a second black matrix BM2, thereby reducing the area where the black matrix BM is formed (i.e., the non-light-emitting area NEA). Therefore, the transparent display panel 110 according to another embodiment of the present disclosure can be more efficient than... Figure 3 The transparent display panel 110 shown further increases transmittance.

[0164] Figure 8 This is an example of setting in Figure 2 A schematic diagram of another implementation of pixels in region A.

[0165] In addition to the shape of the light-emitting area EA Figure 8 The pixels shown are Figure 7 The structures shown are basically the same. In the following text, we will base our discussion on... Figure 7 The differences in the pixels shown are given Figure 8 The description of the pixels shown will be omitted, and detailed descriptions of the elements other than the shape of the light-emitting area EA will be omitted.

[0166] The transparent display panel 110 is classified into a display area DA with pixels P for displaying images and a non-display area NDA for not displaying images. The display area DA includes a transmissive area TA and a non-transmissive area NTA.

[0167] The non-transmissive region NTA may be provided with a first signal line SL1 extending in a first direction (X-axis direction), a second signal line SL2 extending in a second direction (Y-axis direction), and a pixel P disposed in the intersection region IA where the first signal line SL1 and the second signal line SL2 intersect each other.

[0168] Each pixel P may include a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3, and a fourth sub-pixel SP4.

[0169] The first sub-pixel SP1 can include a first light emitting area EA1 disposed to overlap with a portion of the first signal line SL1, which emits light of a first color. The second sub-pixel SP2 can include a second light emitting area EA2 disposed to overlap with a portion of the second signal line SL2, which emits light of a second color. The third sub-pixel SP3 can include a third light emitting area EA3 disposed to face the first sub-pixel SP1 based on the intersection area IA, which emits light of a third color. The fourth sub-pixel SP4 can include a fourth light emitting area EA4 disposed to face the second sub-pixel SP2 based on the intersection area IA, which emits light of a fourth color.

[0170] In the transparent display panel 110 according to still another embodiment of the disclosure, each of the second sub-pixel SP2 and the fourth sub-pixel SP4 overlapping with a portion of the second signal line SL2 includes a protruding area PT.

[0171] In detail, the second light emitting area EA2 of the second sub-pixel SP2 can include a protruding area PT protruding on the second signal line SL2 toward a sub-pixel (e.g., the fourth sub-pixel SP4) of a pixel P adjacent thereto.

[0172] The fourth light emitting area EA4 of the fourth sub-pixel SP4 can include a protruding area PT protruding on the second signal line SL2 toward a sub-pixel (e.g., the second sub-pixel SP2) of a pixel P adjacent thereto.

[0173] In this case, the protruding area PT of each of the second sub-pixel SP2 and the fourth sub-pixel SP4 can have a width identical to that of the second signal line SL2. Accordingly, the transparent display panel 110 according to still another embodiment of the disclosure can increase the size of the light emitting area EA without reducing the size of the transmissive area TA. That is, the transparent display panel 110 according to still another embodiment of the disclosure can improve the light emitting efficiency without reducing the transmittance.

[0174] The non-transmissive area NTA can include the light emitting area EA and the non-light emitting area NEA.

[0175] The light emitting area EA can be provided with a plurality of sub-pixels SP1, SP2, SP3, and SP4 emitting light of a predetermined color, and can include a first light emitting area EA1, a second light emitting area EA2, a third light emitting area EA3, and a fourth light emitting area EA4 disposed in the plurality of sub-pixels SP1, SP2, SP3, and SP4, respectively.

[0176] The non-emitting area NEA can not emit light, and can include a first non-emitting area NEA1 disposed between the plurality of sub-pixels SP1, SP2, SP3, and SP4, a third non-emitting area NEA3 disposed between the pixels P disposed adjacent to each other in the first direction, and a fourth non-emitting area NEA4 disposed between the pixels P disposed adjacent to each other in the second direction.

[0177] The non-emitting area NEA can be provided with a black matrix BM. The black matrix BM can include a first black matrix BM1 disposed between the plurality of sub-pixels SP1, SP2, SP3, and SP4, a third black matrix BM3 disposed between the pixels P disposed adjacent to each other in the first direction, and a fourth black matrix BM4 disposed between the pixels P disposed adjacent to each other in the second direction.

[0178] Since the black matrix BM is made of a light-shielding or light-absorbing material, the black matrix BM can greatly affect the transmittance of the transparent display panel 110. In detail, as the area in which the black matrix BM is formed (i.e., the non-emitting area NEA) increases, the transmittance of the transparent display panel 110 can decrease. On the other hand, the transmittance of the transparent display panel 110 can increase as the non-emitting area NEA decreases.

[0179] In the transparent display panel 110 according to still another embodiment of the disclosure, each of the second sub-pixel SP2 and the fourth sub-pixel SP4 can protrude toward the pixels P disposed adjacent to each other in the first direction. Accordingly, in the transparent display panel 110 according to still another embodiment of the disclosure, the area in which the third black matrix BM3 is formed can be reduced, as compared with the transparent display panel 110 shown in FIGS. 1A and 1B. Figure 3 and Figure 7 The area in which the third black matrix BM3 is formed can be reduced, as compared with the transparent display panel 110 shown in FIGS. 1A and 1B.

[0180] Accordingly, the transparent display panel 110 according to still another embodiment of the disclosure can have a transmittance that is improved more than the transmittance of the transparent display panel 110 shown in FIGS. 1A and 1B, while increasing the emitting area EA. Figure 3 and Figure 7 The transparent display panel 110 according to still another embodiment of the disclosure can have a transmittance that is improved more than the transmittance of the transparent display panel 110 shown in FIGS. 1A and 1B, while increasing the emitting area EA.

[0181] Figure 9 is a schematic view illustrating still another embodiment of a pixel disposed in the area A of Figure 2 Figure 10 is a schematic view illustrating a transistor and a capacitor in the area B of Figure 9 Figure 11 is a schematic view illustrating a first electrode in the area B of Figure 9

[0182] In addition to the shapes of the emitting area EA and the transmissive area TA, Figure 9 Figure 7 ​​​​The illustrated pixel is substantially the same as the pixel illustrated in FIG. 1. Hereinafter, a description will be given based on the difference from the pixel illustrated in FIG. 1. Figure 7 The description of the pixel illustrated in FIG. 1 will be omitted, and a description will be given of the pixel illustrated in FIG. 2, and a detailed description of elements other than the shapes of the light-emitting region EA and the transmissive region TA will be omitted. Figure 9 The description of the pixel illustrated in FIG. 1 will be omitted, and a description will be given of the pixel illustrated in FIG. 2, and a detailed description of elements other than the shapes of the light-emitting region EA and the transmissive region TA will be omitted.

[0183] The transparent display panel 110 is classified into a display region DA in which the pixels P are provided to display an image and a non-display region NDA in which the image is not displayed. The display region DA includes the transmissive region TA and a non-transmissive region NTA.

[0184] The non-transmissive region NTA can be provided with a first signal line SL1 extending in a first direction (X-axis direction), a second signal line SL2 extending in a second direction (Y-axis direction), and the pixel P disposed in an intersection region IA in which the first signal line SL1 and the second signal line SL2 intersect.

[0185] Each of the pixels P can include a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3, and a fourth sub-pixel SP4.

[0186] The first sub-pixel SP1 can include a first light-emitting region EA1 disposed to overlap with a portion of the first signal line SL1, which emits light of a first color. The second sub-pixel SP2 can include a second light-emitting region EA2 disposed to overlap with a portion of the second signal line SL2, which emits light of a second color. The third sub-pixel SP3 can include a third light-emitting region EA3 disposed to face the first sub-pixel SP1 based on the intersection region IA, which emits light of a third color. The fourth sub-pixel SP4 can include a fourth light-emitting region EA4 disposed to face the second sub-pixel SP2 based on the intersection region IA, which emits light of a fourth color.

[0187] In the transparent display panel 110 according to still another embodiment of the disclosure, the pixel P can include a plurality of sides facing the transmissive region TA, and each of the plurality of sides of the pixel P can be inclined with respect to each of the first signal line SL1 and the second signal line SL2.

[0188] In detail, the pixel P can include a first side S1 and a second side S2 facing the transmissive region TA, a third side S3 facing the first side S1, and a fourth side S4 facing the second side S2.

[0189] Each of the first side S1, second side S2, third side S3, and fourth side S4 of pixel P can be tilted and not parallel to or perpendicular to the first signal line SL1. Each of the first side S1, second side S2, third side S3, and fourth side S4 of pixel P can form a curve that is recessed towards the intersection region IA. In this case, depending on the size and layout of pixel P, the transmission region TA can have a rounded square shape, a circular shape, or an elliptical shape.

[0190] When non-transmissive regions NTA are arranged at certain intervals, a slit can be formed between the non-transmissive regions NTA, specifically, a square transmissive region TA. When external light passes through the slit, diffraction can occur.

[0191] Diffraction refers to the phenomenon where light corresponding to a plane wave can be transformed into a spherical wave as it passes through a slit, and interference can occur within the spherical wave. Therefore, interpolation interference and offset interference occur within the spherical wave, resulting in irregular light intensity for the external light that has passed through the slit. Consequently, in the transparent display panel 110, the sharpness of objects or images located on opposite sides can be reduced.

[0192] In a transparent display panel 110 according to another embodiment of the present disclosure, each of the multiple edges S1, S2, S3 and S4 of the pixel P can be formed with a curve that is recessed toward the intersection region IA, thereby preventing diffraction in external light passing through the transmission region TA.

[0193] At the same time, such as Figure 10 As shown, the transparent display panel 110 according to another embodiment of the present disclosure may include a first circuit region TRA in the non-transmissive region NTA, which is provided with at least one or more transistors TR1, TR2 and TR3, and a second circuit region CSTA in which a capacitor CST is provided.

[0194] The first circuit region TRA may include a first transistor region TRA1 disposed between the first signal line SL1 and the second signal line SL2, a second transistor region TRA2 disposed symmetrically with respect to the second signal line SL2 and the first transistor region TRA1, a third transistor region TRA3 disposed symmetrically with respect to the first signal line SL1 and the second transistor region TRA2, and a fourth transistor region TRA4 disposed symmetrically with respect to the second signal line SL2 and the first transistor region TRA1.

[0195] The driving transistor TR1, the switching transistor TR2, and the sensing transistor TR3 can be disposed in each of the first transistor region TRA1, the second transistor region TRA2, the third transistor region TRA3, and the fourth transistor region TRA4.

[0196] The second circuit region CSTA can be disposed between the first circuit region TRA and the transmissive region TA. In detail, the second circuit region CSTA can include a first capacitor region CSTA1 disposed between the first transistor region TRA1 and the transmissive region TA, a second capacitor region CSTA2 disposed between the second transistor region TRA2 and the transmissive region TA, a third capacitor region CSTA3 disposed between the third transistor region TRA3 and the transmissive region TA, and a fourth capacitor region CSTA4 disposed between the fourth transistor region TRA4 and the transmissive region TA.

[0197] The capacitor CST can be disposed in each of the first capacitor region CSTA1, the second capacitor region CSTA2, the third capacitor region CSTA3, and the fourth capacitor region CSTA4.

[0198] In the capacitor CST, at least one side directed toward the transmissive region TA can have the same shape as that of the pixel P. In detail, in the capacitor CST, at least one side directed toward the transmissive region TA can be inclined with respect to each of the first signal line SL1 and the second signal line SL2.

[0199] The capacitor CST can include a first side CS1 directed toward the transmissive region TA. The first side CS1 of the capacitor CST can be inclined not to be parallel or perpendicular to the first signal line SL1 and the second signal line SL2. Also, the first side CS1 of the capacitor CST can be composed of a curved line recessed toward the intersection region IA.

[0200] The capacitor CST can be disposed to have the widest area in a region excluding the second circuit region CSTA, the first signal line SL1, and the second signal line SL2 from the pixel P. To this end, in the transparent display panel 110 according to still another embodiment of the disclosure, the first side CS1 of the capacitor CST can have the same shape as that of the side of the sub-pixels SP1, SP2, SP3, and SP4 directed toward the transmissive region TA. Further, in the transparent display panel 110 according to still another embodiment of the disclosure, an end portion of the first side CS1 of the capacitor CST can be equal to an end portion of the side of the sub-pixels SP1, SP2, SP3, and SP4 directed toward the transmissive region TA.

[0201] In the transparent display panel 110 according to still another embodiment of the disclosure, as Figure 11As shown, at least one side of the first electrode 120 facing the transmission region TA may have the same shape as the first side CS1 of the capacitor CST. Specifically, at least one side of the first electrode 120 facing the transmission region TA may be formed by a curve recessed towards the intersection region IA. In one embodiment, the capacitor CST may have an end at its side facing the transmission region TA that is identical to the end of the first electrode 120.

[0202] As described above, the transparent display panel 110 according to another embodiment of the present disclosure can ensure the maximum capacity of the capacitor CST and improve brightness.

[0203] Furthermore, in the transparent display panel 110 according to another embodiment of the present disclosure, the first side CS1 of the capacitor CST is formed with a curve toward the intersection region IA, thereby easily forming a transmissive region TA with a rounded square shape, a circular shape, or an elliptical shape. Moreover, because the edges along the first side CS1 of the capacitor CST, in which sub-pixels SP1, SP2, SP3, and SP4 are formed, are directed toward the transmissive region TA, the transparent display panel 110 according to another embodiment of the present disclosure can ensure high transmittance while ensuring the maximum size of the light-emitting region EA.

[0204] In the transparent display panel 110 according to another embodiment of the present disclosure, even if the transmissive region TA is formed into a square shape, a circular shape, or an elliptical shape with rounded corners, the size of the non-transmissive region between the sub-pixels SP1, SP2, SP3, and SP4 and the transmissive region TA can be prevented from increasing significantly. Therefore, the transparent display panel 110 according to another embodiment of the present disclosure can increase the clarity of objects or images located on opposite sides without reducing the transmittance.

[0205] Figure 12 The diagram illustrates the transparency and aperture ratio of the light-emitting portion in each of the comparative example, embodiment 1, and embodiment 2.

[0206] Reference Figure 12 In the comparative example, the transmission region TA has a rectangular shape, and the pixels also have a rectangular shape. Embodiment 1 has... Figure 8 The transmission area TA and pixels are shown, and embodiment 2 has Figure 9 The transmission region TA and the pixel are shown. That is, in embodiment 1, the transmission region TA has an octagonal shape, and in embodiment 2, the transmission region TA has a circular shape.

[0207] In the transparent display panel 110, which has the same transmissive area TA and pixels as the comparative example, it should be noted that the aperture ratio of the light-emitting part is 30.0% and the transparency is 43.8%.

[0208] In the transparent display panel 110 having the same transmissive region TA and pixel as in Embodiment 1, it is noted that the aperture ratio of the light emitting portion is 30.0% in the same manner as in the comparative example. However, in the transparent display panel 110 having the same transmissive region TA and pixel as in Embodiment 1, it is noted that the transparency is 50.0%, which is 6.2% higher than the transparency of the comparative example. That is, the transparency of the transparent display panel 110 having the same transmissive region TA and pixel as in Embodiment 1 is improved more than the transparency of the transparent display panel 110 having the same transmissive region TA and pixel as in the comparative example.

[0209] In the transparent display panel 110 having the same transmissive region TA and pixel as in Embodiment 2, it is noted that the aperture ratio of the light emitting portion is 30.0% in the same manner as in the comparative example. However, in the transparent display panel 110 having the same transmissive region TA and pixel as in Embodiment 2, it is noted that the transparency is 49.5%, which is 5.7% higher than the transparency of the comparative example. That is, the transparency of the transparent display panel 110 having the same transmissive region TA and pixel as in Embodiment 2 is improved more than the transparency of the transparent display panel 110 having the same transmissive region TA and pixel as in the comparative example.

[0210] Meanwhile, the transparency of the transparent display panel 110 having the same transmissive region TA and pixel as in Embodiment 2 is 0.5% lower than the transparency of the transparent display panel 110 having the same transmissive region TA and pixel as in Embodiment 1. In the transparent display panel 110 having the same transmissive region TA and pixel as in Embodiment 2, the transparency is lower than the transparency of the transparent display panel 110 having the same transmissive region TA and pixel as in Embodiment 1, but the transmissive region TA is formed in a circular shape, so that the definition of an object or an image located at an opposite side can be improved.

[0211] According to the present disclosure, the plurality of edges of the pixel are disposed to be inclined, and the outer length of the transmissive region can be minimized. Accordingly, the region in which the black matrix is formed (i.e., the non-light emitting region) can be reduced, and the transmittance can be improved.

[0212] In addition, according to the present disclosure, the plurality of sub-pixels are disposed together based on the intersection region in which the first signal line and the second signal line intersect each other, so that the definition of the image quality and the readability can be improved.

[0213] In addition, according to the present disclosure, each of the plurality of edges of the pixel can be formed to include an edge of each of the at least two or more sub-pixels. That is, according to the present disclosure, the non-light emitting area provided between the respective sub-pixels can be provided between the intersection area and any point of the middle area of each edge of the pixel. Therefore, according to the present disclosure, the size of the non-light emitting area provided between the respective sub-pixels can be reduced, and thus the transmittance can be improved.

[0214] In addition, according to the present disclosure, the first circuit area in which at least one transistor is provided and the second circuit area in which the capacitor is provided can be disposed not to overlap a portion of the signal line. Therefore, according to the present disclosure, a parasitic capacitance can be prevented from occurring between the transistor, the capacitor, and the signal line.

[0215] In addition, according to the present disclosure, the first circuit area can be disposed adjacent to the intersection area, and thus the length of a connection line for connecting the transistor and the signal line can be minimized. Therefore, according to the present disclosure, a loss of voltage transmitted from the signal line due to resistance can be reduced.

[0216] Also, according to the present disclosure, the capacitor can be disposed between the first circuit area and the transmissive area, and can be disposed to have the widest area in an area other than the first circuit area and the signal line. Therefore, according to the present disclosure, the maximum capacity of the capacitor can be secured, and thus the luminance can be improved.

[0217] Also, according to the present disclosure, the shape of the transmissive area can be determined by the shape of the capacitor in which the direction is toward the edge of the transmissive area. Therefore, according to the present disclosure, the design freedom of the transmissive area can be obtained without a loss of transmittance.

[0218] Also, according to the present disclosure, the direction of the capacitor toward the edge of the transmissive area can be formed with a curve in which the direction is toward the intersection area, and thus the transmissive area can have a rounded square shape, an elliptical shape, or a circular shape. Therefore, according to the present disclosure, a diffraction phenomenon can be prevented from occurring in external light passing through the transmissive area, and the sharpness of an object or an image located on the rear surface can be improved.

[0219] It will be apparent to those skilled in the art that the above-described present disclosure is not limited by the above-described embodiments and drawings, and various substitutions, modifications, and changes can be made in the present disclosure without departing from the spirit and scope of the present disclosure. Therefore, the scope of the present disclosure is defined by the appended claims, and all variations or modifications derived from the meaning, scope, and equivalent concepts of the claims are intended to fall within the scope of the present disclosure.

Claims

1. A transparent display device, the transparent display device comprising: Multiple first signal lines, the multiple first signal lines extending in a first direction and configured to be spaced apart from each other; Multiple second signal lines, the multiple second signal lines extending in a second direction and configured to be spaced apart from each other; A transmission region is provided between two adjacent first signal lines and between two adjacent second signal lines. as well as A pixel, wherein the pixel comprises a plurality of sub-pixels disposed based on the intersection region where the first signal line and the second signal line intersect each other. In each of the plurality of sub-pixels, at least one edge of the sub-pixel facing the transmission region has an inclination relative to each of the first and second signal lines, and The transparent display device further includes: A third black matrix, wherein the third black matrix is ​​disposed between pixels that are adjacent to each other along the first direction; and A fourth black matrix is ​​disposed between pixels that are adjacent to each other along the second direction.

2. The transparent display device according to claim 1, wherein, The plurality of sub-pixels includes: a first sub-pixel overlapping a portion of the first signal line, a second sub-pixel overlapping a portion of the second signal line, a third sub-pixel facing the first sub-pixel based on the intersection region, and a fourth sub-pixel facing the third sub-pixel based on the intersection region.

3. The transparent display device according to claim 1, wherein, Each of the plurality of sub-pixels includes a first side and a second side oriented toward the transmission region, and each of the first side and the second side has an inclination relative to each of the first signal line and the second signal line.

4. The transparent display device according to claim 1, wherein, The pixel includes multiple sides oriented toward the transmission region, and each of the multiple sides of the pixel has an inclination relative to each of the first signal line and the second signal line.

5. The transparent display device according to claim 4, wherein, Each of the plurality of edges of the pixel is either a straight line or a curve that is concave toward the intersection region.

6. The transparent display device according to claim 1, wherein, The pixel has a diamond shape.

7. The transparent display device according to claim 6, wherein, Each of the plurality of sub-pixels has a diamond shape.

8. The transparent display device according to claim 1, wherein, The transmission area has one of the following shapes: rhombus, hexagon, octagon, and circle.

9. The transparent display device according to claim 1, wherein, Each of the plurality of sub-pixels includes: a first anode electrode, a second anode electrode spaced apart from the first anode electrode, and a connection electrode electrically connecting the first anode electrode and the second anode electrode, wherein the connection electrode of a sub-pixel is disposed only in each of the plurality of edges of the pixel.

10. The transparent display device according to claim 1, further comprising: A first black matrix is ​​disposed between the plurality of sub-pixels; as well as A second black matrix is ​​disposed between each of the plurality of sub-pixels and the transmission region.

11. The transparent display device according to claim 10, wherein, Each of the plurality of sub-pixels includes: a first anode electrode, a second anode electrode spaced apart from the first anode electrode, and a connection electrode electrically connecting the first anode electrode and the second anode electrode, and the second black matrix includes an opening region for exposing the connection electrode.

12. The transparent display device according to claim 10, wherein, The plurality of sub-pixels includes white sub-pixels, and the second black matrix is ​​disposed between the transmission region and each of the other sub-pixels besides the white sub-pixels.

13. The transparent display device according to claim 1, further comprising: A driving transistor, the driving transistor including an active layer, a gate, a source, and a drain; as well as A capacitor, comprising at least two or more capacitor electrodes, Each of the driving transistor and the capacitor does not overlap with each of the first signal line and the second signal line.

14. The transparent display device according to claim 13, wherein, The driving transistor is positioned closer to the cross region than the capacitor.

15. The transparent display device according to claim 13, wherein, Each of the plurality of sub-pixels includes a light-emitting portion consisting of an anode electrode, a light-emitting layer, and a cathode electrode, and the light-emitting portion has an end at a side facing the transmission region that is the same as the end of at least one of the capacitor electrodes.

16. The transparent display device according to claim 1, wherein, At least one of the plurality of sub-pixels included in a pixel includes a protruding region that protrudes in the direction of another pixel adjacent to the pixel.

17. The transparent display device according to claim 1, wherein, The second signal line includes a gate line, and the first signal line includes at least one of a reference line, a first power line, a second power line, and a data line.

18. A transparent display device, the transparent display device comprising: Multiple first signal lines, the multiple first signal lines extending in a first direction and configured to be spaced apart from each other; Multiple second signal lines, the multiple second signal lines extending in a second direction and configured to be spaced apart from each other; A transmission region is provided between two adjacent first signal lines and between two adjacent second signal lines. as well as A pixel, disposed in the intersection region where the first signal line and the second signal line intersect, includes a first circuit region having at least one transistor and a second circuit region having at least one capacitor. Wherein, at least one side of the second circuit region facing the transmission region has an inclination relative to each of the first and second signal lines, and The transparent display device further includes: A third black matrix, wherein the third black matrix is ​​disposed between pixels that are adjacent to each other along the first direction; and A fourth black matrix is ​​disposed between pixels that are adjacent to each other along the second direction.

19. The transparent display device according to claim 18, wherein, The second circuit region is disposed between the first circuit region and the transmission region.

20. The transparent display device according to claim 18, wherein, The first circuit region and the second circuit region do not overlap with the first signal line and the second signal line.

21. The transparent display device according to claim 18, wherein, The capacitor is formed at its edge facing the transmission region by either a sloping line inclined relative to each of the first and second signal lines, or a curve concave towards the intersection region.

22. The transparent display device according to claim 18, wherein, The pixel includes a plurality of sub-pixels, and in each of the plurality of sub-pixels, the side facing the transmission region has the same shape as the capacitor, and wherein each of the plurality of sub-pixels has the same end as the capacitor at the side facing the transmission region.

23. The transparent display device according to claim 18, wherein, The first circuit region includes a first transistor region disposed between the first signal line and the second signal line, a second transistor region symmetrically disposed with respect to the second signal line and the first transistor region, a third transistor region symmetrically disposed with respect to the first signal line and the second transistor region, and a fourth transistor region symmetrically disposed with respect to the second signal line and the first transistor region. A driving transistor, a switching transistor, and a sensing transistor are disposed in each of the first transistor region, the second transistor region, the third transistor region, and the fourth transistor region.

24. The transparent display device according to claim 23, wherein, The second circuit region is disposed between the first circuit region and the transmission region. The second circuit region includes a first capacitor region disposed between the first transistor region and the transmission region, a second capacitor region disposed between the second transistor region and the transmission region, a third capacitor region disposed between the third transistor region and the transmission region, and a fourth capacitor region disposed between the fourth transistor region and the transmission region. The capacitor is disposed in each of the first capacitor region, the second capacitor region, the third capacitor region, and the fourth capacitor region.

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