Transparent display device

Abstract

To provide a transparent display device which can improve transmissivity of a transmissive portion, minimize perceptibility of sub-pixels causing dark spots, reduce overall power consumption, and prevent visibility reduction due to diffraction phenomena.SOLUTION: A transparent display device according to one exemplary embodiment disclosed herein includes: a first pixel disposed on a substrate, the first pixel having a plurality of first sub-pixels and a plurality of transmissive portions; a second pixel disposed adjacent to the first pixel, the second pixel having a plurality of second sub-pixels and a plurality of transmissive portions; and a third pixel disposed adjacent to the first pixel and the second pixel, the third pixel having a plurality of third sub-pixels and a plurality of transmissive portions. One first sub-pixel of the plurality of first sub-pixels, one second sub-pixel of the plurality of second sub-pixels, and one third sub-pixel of the plurality of third sub-pixels are disposed adjacent to each other.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] This specification relates to a transparent display device.

Background Art

[0002] As the information society develops, the requirements for display devices for displaying images are increasing in various forms. As a result, recently, various display devices such as liquid crystal display devices (LCDs), plasma display panels (PDPs), organic light emitting display devices (OLEDs), and quantum dot light emitting display devices (QLEDs) have been utilized.

[0003] In recent years, research on transparent display devices that allow users to see objects or backgrounds located on the opposite side through the display device has been actively conducted.

[0004] The transparent display device includes a display area where an image is displayed and a non-display area, and the display area can include a transmissive area that allows external light to pass through and a light emitting area. The transparent display device can have a high light transmittance in the display area through the transmissive area.

[0005] On the other hand, in the transparent display device, one sub-pixel in the display area is divided into a plurality, and the divided sub-pixels are connected to each other via repair wirings to a thin film transistor. Then, when a dark spot occurs in any one of the divided sub-pixels, the repair wiring connected to the sub-pixel in which the dark spot has occurred can be cut to drive the remaining sub-pixels normally. Here, since the repair wiring connecting the divided sub-pixels is disposed in the transmissive area in the transparent display device, there is a problem that the transmittance of the transmissive area becomes low.

Summary of the Invention

Problems to be Solved by the Invention

[0006] This specification aims to provide a technical solution to the problem of improving the transmittance of a transmissive portion in a transparent display device.

[0007] Another technical problem addressed by this specification is to provide a transparent display device that can minimize the visibility of sub-pixels with dead pixels.

[0008] Another technical problem addressed by this specification is to provide a transparent display device that can reduce overall power consumption.

[0009] Another technical problem addressed by this specification is to provide a transparent display device that can prevent a decrease in visibility due to diffraction phenomena.

Means for Solving the Problems

[0010] A transparent display device according to an embodiment of this specification includes a first pixel having a plurality of first sub-pixels and a plurality of transmissive portions disposed on a substrate, a second pixel having a plurality of second sub-pixels and a plurality of transmissive portions disposed adjacent to the first pixel, and a third pixel having a plurality of third sub-pixels and a plurality of transmissive portions disposed adjacent to the first pixel and the second pixel. One first sub-pixel out of the plurality of first sub-pixels, one second sub-pixel out of the plurality of second sub-pixels, and one third sub-pixel out of the plurality of third sub-pixels are configured to be disposed adjacent to each other.

[0011] A transparent display device according to an embodiment of this specification includes a plurality of pixels having a plurality of sub-pixels and a plurality of transmissive portions disposed on a substrate, and wiring for driving the plurality of sub-pixels. The plurality of sub-pixels include two sub-pixels disposed in a first direction and two sub-pixels disposed in a second direction so as to be arranged in an X shape in the pixel. The transmissive portions are disposed between every two of the plurality of sub-pixels, and the wiring is configured to not overlap with the transmissive portions and partially overlap with the plurality of sub-pixels.

[0012] In this specification, by arranging the sub-pixels of one pixel adjacent to the sub-pixels of at least two different pixels, it is configured such that the sub-pixels of the same color of two adjacent pixels emit light instead of the sub-pixel where a dark spot has occurred, so that the transmittance of the transmissive portion can be improved compared to the case where the connection electrode is arranged in the transmissive portion.

[0013] Further, this specification is configured such that the sub-pixels of the same color of each of the two adjacent pixels emit light instead of the sub-pixel where a dark spot has occurred, so that the recognizability of the sub-pixel where a dark spot has occurred can be minimized.

[0014] Further, this specification is configured such that two or more sub-pixels (or shared sub-pixels) that emit the same color as the sub-pixel where a dark spot has occurred emit light. Compared to the case where only one sub-pixel of the same color emits light, one sub-pixel (or one shared sub-pixel) can be driven with low power, so that the overall power consumption can be reduced.

[0015] Further, in this specification, by arranging the sub-pixels of the same color of two adjacent pixels to emit light instead of the sub-pixel where a dark spot has occurred, it is possible to prevent the reduction in visibility due to the diffraction phenomenon compared to the case where the repair wiring is arranged in the transmissive portion.

[0016] The effects obtained in this specification are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those with ordinary knowledge in the technical field to which this specification belongs from the following description.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0018] The advantages and features of the present specification, and the methods for achieving them, will become apparent by referring to the embodiments described in detail below together with the accompanying drawings. However, the present specification is not limited to the embodiments disclosed below, but can be embodied in various different forms, and the present embodiments are merely provided to make the disclosure of the present specification complete and to fully inform those with ordinary knowledge in the technical field to which the present specification belongs of the scope of the invention.

[0019] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present specification are exemplary, and the present specification is not limited to the matters shown in the drawings. Throughout the specification, the same drawing numbers refer to the same components. In addition, in the description of the present specification, when it is determined that a specific description of related known technologies may unnecessarily obscure the gist of the present specification, the detailed description thereof is omitted.

[0020] When terms such as "including", "having", "consisting of", etc. mentioned in the present specification are used, other parts can be added unless "only" is used. When a component is expressed in the singular, it includes the case of including a plurality unless otherwise explicitly stated.

[0021] In interpreting a component, even if there is no separate explicit description of the error range, it is interpreted as including the error range.

[0022] In the case of an explanation regarding a positional relationship, for example, when the positional relationship between two parts is described by "~ on", "~ at the upper part of", "~ at the lower part of", "~ beside", etc., unless the expressions "immediately" or "directly" are used, one or more other parts can be located between the two parts.

[0023] In the case of an explanation regarding a time relationship, for example, when the chronological relationship is described by "~ after", "~ following", "~ next", "~ before", etc., unless the expressions "immediately" or "directly" are used, it can include cases that are not continuous.

[0024] First, second, etc. are used to describe various components, but these components are not limited by these terms. These terms are merely used to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical concept of this specification.

[0025] The "X-axis direction", "Y-axis direction", and "Z-axis direction" should not be interpreted as only having a geometric relationship where the relationship between them is perpendicular, and it can be meant that they have a broader direction within the range where the configuration of this specification can function properly.

[0026] The term "at least one" should be understood to include all combinations that can be presented from one or more related items. For example, the meaning of "at least one of the first item, the second item, and the third item" can mean each of the first item, the second item, or the third item, as well as all combinations of items that can be presented from two or more of the first item, the second item, and the third item.

[0027] The features of each of some embodiments of this specification can be partially or wholly combined or combined with each other, enabling various technical linkages and drives, and each embodiment can be implemented independently of each other or implemented together in an associated relationship.

[0028] Hereinafter, preferred embodiments of this specification will be described in detail with reference to the accompanying drawings.

[0029] FIG. 1 is a plan view schematically showing a transparent display device according to an embodiment of this specification.

[0030] Hereinafter, the X-axis represents the horizontal direction (i.e., the longitudinal direction) of the transparent display device with reference to FIG. 1, the Y-axis represents the vertical direction (i.e., the width direction) of the transparent display device with reference to FIG. 1, the first direction (D1) represents the first diagonal direction intersecting the X-axis and the Y-axis (i.e., the first diagonal direction of the pixel), the second direction (D2) represents the second diagonal direction orthogonal to the first diagonal direction (the second diagonal direction of the pixel), and the Z-axis represents the thickness (or height) direction of the transparent display device 100.

[0031] Although the transparent display device 100 according to an embodiment of this specification has been mainly described as being implemented by an Organic Light Emitting Display, it can also be implemented by a Liquid Crystal Display, a Plasma Display Panel (PDP), a Quantum dot Light Emitting Display (QLED), or an Electrophoresis display.

[0032] Referring to FIG. 1, the transparent display device 100 according to an embodiment of this specification includes a transparent display panel, a source drive integrated circuit (hereinafter referred to as "IC") 120, a flexible film 130, a circuit board 140, and a timing control unit 150.

[0033] The transparent display panel includes a substrate 110 and a counter substrate 200 (shown in FIG. 4) facing each other. The substrate 110 can be a plastic film, a glass substrate, or a silicon wafer substrate formed using semiconductor processes. The counter substrate 200 can be a plastic film, a glass substrate, or a sealing film. Such a substrate 110 and counter substrate 200 can be made of a transparent material. The substrate 110 can include a display area (DA) and a non-display area (NDA).

[0034] The display area (DA) is an area where an image is displayed and can be a pixel array area, an active area, a pixel array section, a display section, or a screen. For example, the display area (DA) can be arranged in the central portion of the display panel. The display area (DA) can include a plurality of pixels (P).

[0035] The non-display area (NDA) is an area where no video is displayed and can be a peripheral area, a signal supply area, an inactive area, or a bezel area. The non-display area (NDA) can be configured to be around the display area (DA). That is, the non-display area (NDA) can be arranged to surround the display area (DA).

[0036] A pad portion (PA) can be arranged in the non-display area (NDA). The pad portion (PA) can supply power and / or signals for the pixels (P) provided in the display area (DA) to output video. Referring to FIG. 1, the pad portion (PA) can be provided above the display area (DA).

[0037] Also, pads such as a power pad and a data pad can be formed in the non-display area (NDA) of the substrate 110. On the flexible film 130, wirings for connecting the pads and the source drive IC 120 and wirings for connecting the pads and the circuit board 140 can be formed. The flexible film 130 is attached onto the pads using an anisotropic conducting film, thereby connecting the pads and the wirings of the flexible film 130.

[0038] The gate driving unit (GD) can be formed in a GIP (gate driver in panel) manner in a non-display area outside one or both sides of the display area of the substrate 110. Alternatively, the gate driving unit can be fabricated with driving chips and mounted on a flexible film, and attached to a non-display area (NDA) outside one or both sides of the display area (DA) of the substrate 110 by a TAB (tape automated bonding) method.

[0039] The source drive IC 120 receives an input of digital video data and a source control signal from the timing control unit 150. The source drive IC 120 converts the digital video data into an analog data voltage according to the source control signal and supplies it to the data line. When the source drive IC 120 is manufactured as a driving chip, it can be mounted on the flexible film 130 by a COF (chip on film) or COP (chip on plastic) method.

[0040] The circuit board 140 can be attached to the flexible film 130. The circuit board 140 can mount a number of circuits embodied as driving chips. For example, the timing control unit 150 can be mounted on the circuit board 140. The circuit board 140 can be a printed circuit board or a flexible printed circuit board.

[0041] The timing control unit 150 receives an input of digital video data and a timing signal from an external system board via a cable of the circuit board 140. The timing control unit 150 generates a gate control signal for controlling the operation timing of the gate driving unit (GD) based on the timing signal, and a source control signal for controlling the source drive IC 120. The timing control unit 150 supplies the gate control signal to the gate driving unit (GD) and the source control signal to the source drive IC 120.

[0042] Figure 2 is an enlarged view of the A region in Figure 1, Figure 3 is a diagram showing an example in which a plurality of signal lines and a plurality of transistors are arranged, and Figure 4 is a cross-sectional view showing an example of I-I' in Figure 3.

[0043] Referring to FIGS. 2 to 4, the substrate 110 can include a light-emitting region (EA) and a non-light-emitting region (NEA).

[0044] The light-emitting region (EA) can mean a region that emits light. In the light-emitting region (EA), a light-emitting element layer (E) including a pixel electrode 114, an organic light-emitting layer 116, and a counter electrode 117 can be arranged. When an electric field is formed between the pixel electrode 114 and the counter electrode 117, the organic light-emitting layer 116 in the light-emitting region (EA) can emit light.

[0045] The non-light-emitting region (NEA) is a region that does not emit light and can be a region adjacent to the light-emitting region (EA). The non-light-emitting region (NEA) can be represented by the term peripheral region.

[0046] Referring to FIGS. 2 and 3, a plurality of pixels (P) according to an example can include a gate line (GL), data lines (DL1, DL2, DL3, DL4), a pixel power supply line (EVDD), a common power supply line (EVSS), and a reference line (RL). Each of the plurality of pixels (P) can include a plurality of sub-pixels (SP) that can be defined by a gate line and a data line.

[0047] Among the plurality of sub-pixels (SP), at least four sub-pixels that are provided to emit different colors and are arranged adjacent to each other can constitute one pixel (P) (or unit pixel). One pixel (P) can include, but is not limited to, a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel. One pixel (P) can be composed of three sub-pixels (SP) that are provided to emit different colors and are arranged adjacent to each other. For example, one pixel (P) can include a red sub-pixel, a green sub-pixel, and a blue sub-pixel.

[0048] Each of the plurality of sub-pixels (SP) can include a thin-film transistor and a light-emitting element layer (E) connected to the thin-film transistor. Each of the plurality of sub-pixels can include a light-emitting layer (or an organic light-emitting layer) interposed between a pixel electrode and a counter electrode.

[0049] The light-emitting layers arranged in each of the plurality of sub-pixels (SP) can commonly emit white light. Since the light-emitting layers of each of the plurality of sub-pixels (SP) commonly emit white light, each of the red sub-pixel, the green sub-pixel, and the blue sub-pixel can include a color filter (CF) (or a wavelength conversion member (CF)) that converts white light into different color lights. In this case, the white sub-pixel can be configured without a color filter.

[0050] In the display device 100 according to an embodiment of the present specification, the region provided with the red color filter can be a red sub-pixel or a first sub-pixel, the region not provided with the color filter can be a white sub-pixel or a second sub-pixel, the region provided with the blue color filter can be a blue sub-pixel or a third sub-pixel, and the region provided with the green color filter can be a green sub-pixel or a fourth sub-pixel.

[0051] When a gate signal is input from a gate line to each sub-pixel (SP) using a thin-film transistor, a predetermined current is supplied to the organic light-emitting element by a data voltage of a data line. Thereby, each light-emitting layer of the sub-pixel can emit light with a predetermined brightness by a predetermined current.

[0052] In the transparent display device 100 according to an embodiment of the present specification, the pixel (P) can include a first pixel (P1), a second pixel (P2), and a third pixel (P3). The first pixel (P1) according to an example is disposed on the substrate 110 and can include a plurality of first sub-pixels (SP1) and a plurality of transmissive portions (TA). The second pixel (P2) according to an example is disposed adjacent to the first pixel (P1) and can include a plurality of second sub-pixels (SP2) and a plurality of transmissive portions (TA). The third pixel (P3) according to an example is disposed adjacent to the first pixel (P1) and the second pixel (P2) and can include a plurality of third sub-pixels (SP3) and a plurality of transmissive portions (TA).

[0053] Here, one of the plurality of first sub-pixels (SP1) can be disposed adjacent to each of one of the plurality of second sub-pixels (SP2) and one of the plurality of third sub-pixels (SP3). Any two of one of the first sub-pixels (SP1), one of the second sub-pixels (SP2), and one of the third sub-pixels (SP3) can be disposed adjacent to each other.

[0054] For example, as shown in FIG. 2, the first green sub-pixel (SP1-2) included in the plurality of first sub-pixels (SP1) can be disposed adjacent to each of the second blue sub-pixel (SP2-3) included in the plurality of second sub-pixels (SP2) and the third white sub-pixel (SP3-4) included in the plurality of third sub-pixels (SP3).

[0055] Therefore, the transparent display device 100 according to an embodiment of the present specification can have a structural feature in which one sub-pixel (SP) included in each of the three pixels (P1, P2, P3) is disposed adjacent to each other, and each of the three adjacent sub-pixels (SP) is a sub-pixel that emits light of different colors from each other.

[0056] The reason for arranging one second sub-pixel (SP2) included in the second pixel (P2) and one third sub-pixel (SP3) included in the third pixel (P3) adjacent to one first sub-pixel (SP1) included in the first pixel (P1) is that when a dark spot occurs in the one first sub-pixel (SP1) included in the first pixel (P1), by causing one second sub-pixel (SP2) included in the second pixel (P2) and one third sub-pixel (SP3) included in the third pixel (P3) to emit light, it is to reduce the chance that the first sub-pixel (SP1) where the dark spot has occurred is recognized by the user. That is, the more shared sub-pixels there are, the less likely the dark spots are to be clearly visible. Here, one first sub-pixel (SP1) included in the first pixel (P1), one second sub-pixel (SP2) included in the second pixel (P2), and one third sub-pixel (SP3) included in the third pixel (P3) can all be sub-pixels that emit the same color of light.

[0057] And the reason for arranging three sub-pixels (SP) that emit light of different colors adjacent to each other is to arrange the sub-pixels of the other two pixels that emit light of the same color as the sub-pixel (SP) where the dark spot has occurred as close as possible to the sub-pixel (SP) where the dark spot has occurred compared to the other sub-pixels that emit light of other colors. Therefore, by having two sub-pixels (SP) of the same color emit light at a position close to the sub-pixel (SP) where the dark spot has occurred, the user's awareness can be minimized.

[0058] As a result, the transparent display device 100 according to an embodiment of the present specification can have a feature that it is a sub-pixel that emits light of a color different from each of one first sub-pixel (SP1) (for example, the first green sub-pixel (SP1-2)) arranged adjacent, one second sub-pixel (SP2) (for example, the second blue sub-pixel (SP2-3)) arranged adjacent, and one third sub-pixel (SP3) (for example, the third white sub-pixel (SP3-4)) arranged adjacent.

[0059] Referring again to FIG. 2, the plurality of first sub-pixels (SP1) may include a first red sub-pixel (SP1-1) arranged in the first direction (D1), a first green sub-pixel (SP1-2) arranged in the first direction (D1) adjacent to the first red sub-pixel (SP1-1), a first blue sub-pixel (SP1-3) arranged in the second direction (D2) partially adjacent to each of one side of the first red sub-pixel (SP1-1) and one side of the first green sub-pixel (SP1-2), and a first white sub-pixel (SP1-4) arranged in the second direction (D2) partially adjacent to each of the other side of the first red sub-pixel (SP1-1) and the other side of the first green sub-pixel (SP1-2). One side of the first red sub-pixel (SP1-1) may mean the lower left side of the first red sub-pixel (SP1-1) with reference to FIG. 2. The other side of the first red sub-pixel (SP1-1) may mean the upper right side of the first red sub-pixel (SP1-1) with reference to FIG. 2. Therefore, in the transparent display device 100 according to an embodiment of the present specification, the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) may be provided in a windmill form or an X form.

[0060] The plurality of second sub-pixels (SP2) includes a second red sub-pixel (SP2-1) arranged in the first direction (D1), a second green sub-pixel (SP2-2) that is adjacent to the second red sub-pixel (SP2-1) and arranged in the first direction (D1), a second blue sub-pixel (SP2-3) that is partially adjacent to each of one side of the second red sub-pixel (SP2-1) and one side of the second green sub-pixel (SP2-2) and arranged in the second direction (D2), and a second white sub-pixel (SP2-4) that is partially adjacent to the other side of the second red sub-pixel (SP2-1) and the other side of the second green sub-pixel (SP2-2) and arranged in the second direction (D2). One side of the second red sub-pixel (SP1-1) can mean the lower left side of the second red sub-pixel (SP2-1) with reference to FIG. 2. The other side of the second red sub-pixel (SP2-1) can mean the upper right side of the second red sub-pixel (SP2-1) with reference to FIG. 2. Therefore, in the transparent display device 100 according to an embodiment of the present specification, the second red sub-pixel (SP2-1), the second green sub-pixel (SP2-2), the second blue sub-pixel (SP2-3), and the second white sub-pixel (SP2-4) can be provided in a windmill form or an X form.

[0061] On the other hand, as shown in FIG. 2, since each of the plurality of first sub-pixels (SP1) and the plurality of second sub-pixels (SP2) is provided in a windmill form, the first green sub-pixel (SP1-2) can be arranged adjacent to the second blue sub-pixel (SP2-3), and the first white sub-pixel (SP1-4) can be arranged adjacent to the second red sub-pixel (SP2-1).

[0062] The plurality of third sub-pixels (SP3) can include a third red sub-pixel (SP3-1) arranged in the first direction (D1), a third green sub-pixel (SP3-2) adjacent to the third red sub-pixel (SP3-1) and arranged in the first direction (D1), a third blue sub-pixel (SP3-3) partially adjacent to each of one side of the third red sub-pixel (SP3-1) and one side of the third green sub-pixel (SP3-2) and arranged in the second direction (D2), and a third white sub-pixel (SP3-4) partially adjacent to the other side of the third red sub-pixel (SP3-1) and the other side of the third green sub-pixel (SP3-2) and arranged in the second direction (D2). One side of the third red sub-pixel (SP3-1) can mean the lower left side of the third red sub-pixel (SP3-1) based on FIG. 2. The other side of the third red sub-pixel (SP3-1) can mean the upper right side of the third red sub-pixel (SP3-1) based on FIG. 2. Therefore, in the transparent display device 100 according to an embodiment of the present specification, the third red sub-pixel (SP3-1), the third green sub-pixel (SP3-2), the third blue sub-pixel (SP3-3), and the third white sub-pixel (SP3-4) can be provided in a windmill form or an X form.

[0063] On the other hand, as shown in FIG. 2, by providing each of the plurality of first sub-pixels (SP1) and the plurality of third sub-pixels (SP3) in a windmill form, the first green sub-pixel (SP1-2) can be arranged adjacent to the third white sub-pixel (SP3-4), and the first blue sub-pixel (SP1-3) can be arranged adjacent to the third red sub-pixel (SP3-1).

[0064] According to an embodiment of the present specification, in the transparent display device 100, each of a plurality of first sub-pixels (SP1), a plurality of second sub-pixels (SP2), and a plurality of third sub-pixels (SP3) is provided in the form of a windmill, and one sub-pixel of each of the plurality of first to third sub-pixels (SP1, SP2, SP3) can be arranged adjacent to each other. Therefore, in the transparent display device 100 according to an embodiment of the present specification, if one of the plurality of first sub-pixels (SP1) is a dark point sub-pixel, by providing the second sub-pixel (SP2) and the third sub-pixel (SP3) of the same color to emit light, it is possible to minimize or prevent the first sub-pixel (SP1) with a dark point from being recognized by the user.

[0065] That is, in the transparent display device 100 according to an embodiment of the present specification, by driving the sub-pixels of the same color of the other two adjacent pixels instead of the sub-pixel with a dark point, the image to be represented by a specific pixel can be represented using the adjacent pixels. In the present specification, the driving method as described above is defined as Visual Randering driving.

[0066] The transparent display device 100 according to an embodiment of the present specification can implement Visual Rendering driving by dividing the data value of the sub-pixel with a dark point, that is, the sub-pixel with a defect, and additionally reflecting it in each data value of the sub-pixels that emit light of the same color in the adjacent pixels.

[0067] For example, if the first red sub-pixel (SP1-1) is a defective sub-pixel, the second red sub-pixel (SP2-1) and the third red sub-pixel (SP3-1) can be caused to emit light instead of the first red sub-pixel (SP1-1). In this case, the data value of the first red sub-pixel (SP1-1) can be divided and summed with the data values of the second red sub-pixel (SP2-1) and the third red sub-pixel (SP3-1) respectively. Therefore, the transparent display device 100 according to an embodiment of the present specification can minimize the visibility to the user of the defective sub-pixel by driving the sub-pixels of the same color of two other adjacent pixels instead of the defective sub-pixel where a dark spot has occurred. A specific description thereof will be given later with reference to FIG. 5.

[0068] Hereinafter, with reference to FIGS. 2 to 4, one pixel (P1) included in the transparent display device 100 according to an embodiment of the present specification will be specifically described.

[0069] Referring to FIGS. 2 and 3, a first pixel (P1) according to an example can include a plurality of first sub-pixels (SP1). The plurality of first sub-pixels (SP1) can include a first red sub-pixel (SP1-1) and a first green sub-pixel (SP1-2) arranged adjacent to each other in a first direction (D1), and a first blue sub-pixel (SP1-3) and a first white sub-pixel (SP1-4) arranged adjacent to each other in a second direction (D2). The first blue sub-pixel (SP1-3) can be arranged to be partially adjacent to each of one sides of the first red sub-pixel (SP1-1) and the first green sub-pixel (SP1-2). The first white sub-pixel (SP1-4) can be arranged to be partially adjacent to each of the other sides of the first red sub-pixel (SP1-1) and the first green sub-pixel (SP1-2). Therefore, the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) can be provided in a windmill form or an X form.

[0070] Each of the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) can include a light-emitting region (EA) and a circuit region. Since the transparent display device 100 according to an embodiment of the present specification is provided in an upper emission type, as shown in FIG. 3, the circuit region can be disposed under the pixel electrode 114. That is, the circuit region can be disposed to overlap with the pixel electrode 114 (or the light-emitting region (EA)) in the Z-axis direction.

[0071] The first red sub-pixel (SP1-1) according to an example can include a first light-emitting region (EA1). The first green sub-pixel (SP1-2) can include a second light-emitting region (EA2). The first blue sub-pixel (SP1-3) can include a third light-emitting region (EA3). The first white sub-pixel (SP1-4) can include a fourth light-emitting region (EA4).

[0072] Referring to FIG. 3, each of the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) can include circuit elements such as thin-film transistors and capacitors (R2, G2, B2, W2), etc., and light-emitting elements. The thin-film transistor can include driving transistors (R1, G1, B1, W1) (or 112), scan transistors (R3, G3, B3, W3), and sensing transistors (R4, G4, B4, W4).

[0073] The scan transistor (R3, G3, B3, W3) is switched by a scan signal supplied to the gate line (GL) (or the scan line (GL)), and serves to supply a data voltage supplied from the data lines (DL1, DL2, DL3, DL4) to the driving transistor (R1, G1, B1, W1).

[0074] The sensing transistor (R4, G4, B4, W4) serves to sense a threshold voltage deviation of the driving transistor (R1, G1, B1, W1) that causes image quality degradation.

[0075] The driving transistors (R1, G1, B1, W1) are switched by the data voltage supplied from the scan transistor, and serve to generate a data current from the power supply supplied from the pixel power line (EVDD) and supply it to the pixel electrode 114 of the sub-pixel. Each of the driving transistors (R1, G1, B1, W1) (or the driving transistor 112) includes an active layer 112a, a gate electrode 112b, a source electrode 112c, and a drain electrode 112d.

[0076] The capacitors (R2, G2, B2, W2) serve to maintain the data voltage supplied to the driving transistors (R1, G1, B1, W1) (or 112) for one frame. Each of the capacitors (R2, G2, B2, W2) can include a first capacitor electrode and a second capacitor electrode.

[0077] Specifically, referring to FIG. 4, an active layer 112a can be provided on the substrate 110. The active layer 112a can be formed of a silicon-based semiconductor material or an oxide-based semiconductor material.

[0078] Between the active layer 112a and the substrate 110, a light-shielding layer (LS) for blocking external light incident on the active layer 112a as shown in FIG. 4 can be provided. The light-shielding layer (LS) can be made of a conductive material, and for example, can be formed of a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. In such a case, a buffer layer (BL) can be provided between the light-shielding layer (LS) and the active layer 112a.

[0079] A gate insulating layer 111a can be provided on the active layer 112a. The gate insulating layer 111a can be formed of an inorganic film, for example, a silicon oxide film (SiOx), a silicon nitride film (SiNx), or a multilayer thereof.

[0080] On the gate insulating layer 111a, a gate electrode 112b can be provided. The gate electrode 112b can be formed of a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof.

[0081] On the gate electrode 112b, an interlayer insulating layer 111b can be provided. The interlayer insulating layer 111b can be formed of an inorganic film, such as a silicon oxide film (SiOx), a silicon nitride film (SiNx), or a multilayer thereof.

[0082] On the interlayer insulating layer 111b, a source electrode 112c and a drain electrode 112d can be provided. The source electrode 112c and the drain electrode 112d can be connected to the active layer 112a through a contact hole penetrating the gate insulating layer 111a and the interlayer insulating layer 111b.

[0083] The source electrode 112c and the drain electrode 112d can be formed of a single layer or a multilayer made of any one of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or an alloy thereof. The drain electrode 112d can be connected to the pixel electrode 114 through a connection electrode (CE) penetrating the first passivation layer 111c. The connection electrode (CE) can be connected to the drain electrode 112d or the source electrode 112c of the driving transistor (R1, G1, B1, W1) (or 112) through the second contact hole (CNT2).

[0084] On the source electrode 112c and the drain electrode 112d, a first passivation layer 111c for protecting the driving transistor (R1, G1, B1, W1) (or 112) can be provided.

[0085] The first passivation layer 111c can be disposed between the substrate 110 and the planarization layer 113. The first passivation layer 111c according to an example covers the drain electrode 112d, the source electrode 112c of the driving transistor 112, and the interlayer insulating layer 111b. The first passivation layer 111c can be formed over the entire circuit region and the light-emitting region.

[0086] The second passivation layer 111d can be provided on the substrate 110 so as to cover the pixel region. For example, the second passivation layer 111d can be provided so as to cover the connection electrode (CE) between the first passivation layer 111c and the planarization layer 113. The second passivation layer 111d can be formed over the entire circuit region and the light-emitting region. The connection electrode (CE) according to an example can be a clad.

[0087] A planarization layer 113 for flattening the step caused by the driving transistors (R1, G1, B1, W1) (or 112) can be provided on the second passivation layer 111d. The planarization layer 113 can be formed of an organic film such as an acrylic resin, an epoxy resin, a phenol resin, a polyamide resin, or a polyimide resin.

[0088] The gate insulating layer 111a, the interlayer insulating layer 111b, the first passivation layer 111c, and the second passivation layer 111d can be included in the inorganic film layer 111.

[0089] A light-emitting element including a pixel electrode 114, an organic light-emitting layer 116, and a counter electrode 117 and a bank 115 are provided on the planarization layer 113.

[0090] The pixel electrode 114 is provided on the planarization layer 113 and can be connected to the driving transistors (R1, G1, B1, W1) (or 112) via the connection electrode (CE). Specifically, the pixel electrode 114 can be connected to the source electrode 112c or the drain electrode 112d of the driving transistors (R1, G1, B1, W1) (or 112) through the first contact hole (CNT1) that penetrates the planarization layer 113 and the second passivation layer 111d. Thereby, the pixel electrode 114 can be electrically connected to the driving transistors (R1, G1, B1, W1) (or 112).

[0091] Such a pixel electrode 114 can be provided separately for each sub-pixel (SP1-1, SP1-2, SP1-3, SP1-4). One pixel electrode 114 is formed for the first red sub-pixel (SP1-1), another pixel electrode 114 is formed for the first green sub-pixel (SP1-2), still another pixel electrode 114 is formed for the first blue sub-pixel (SP1-3), and yet another pixel electrode 114 can be formed for the first white sub-pixel (SP1-4). And the pixel electrode 114 is not provided in the transmissive portion (TA) (or the first to fourth transmissive portions (TA1, TA2, TA3, TA4)).

[0092] Such a pixel electrode 114 can be formed of a highly reflective metal material such as a laminated structure of aluminum and titanium (Ti / Al / Ti), a laminated structure of aluminum and ITO (ITO / Al / ITO), an Ag alloy, and a laminated structure of an Ag alloy and ITO (ITO / Ag alloy / ITO). The Ag alloy can be an alloy of silver (Ag), palladium (Pd), copper (Cu), etc. The pixel electrode 114 can be an anode electrode or a first electrode.

[0093] In the transparent display device 100 according to an embodiment of the present specification, one end of the first red sub-pixel (SP1-1) is provided in a protruding form, and the other end of the first red sub-pixel (SP1-1) can be provided in a form different from that of the one end. For example, as shown in FIG. 3, one end of the first red sub-pixel (SP1-1) can be provided in a triangular form, and the other end can be provided flat (or in a linear form). One end of the first red sub-pixel (SP1-1) can be a portion adjacent to the sub-pixel (SP) of another pixel (P) in the first red sub-pixel (SP1-1). The other end of the first red sub-pixel (SP1-1) can be a portion adjacent to the sub-pixel (SP) of the same pixel (P) in the first red sub-pixel (SP1-1), for example, the first green sub-pixel (SP1-2).

[0094] The reason why one end of the first red sub-pixel (SP1-1) is provided in a protruding form is that it is arranged adjacent to the protruding end of the blue sub-pixel of another pixel and also the protruding end of the white sub-pixel of another pixel. By providing each of the sub-pixels having different colors in a protruding form, the sub-pixels of different pixels can be arranged close to each other, so that the size (or area) of the non-light-emitting region (NEA) that does not emit light can be minimized.

[0095] Also, by providing each of the sub-pixels having different colors in a protruding form, the sub-pixels of different pixels can be arranged close to each other, so that two sub-pixels of the same color can emit light at a position close to the sub-pixel where a dark spot has occurred, thereby minimizing the possibility that the user can see the dark spot.

[0096] That is, in the transparent display device 100 according to an embodiment of the present specification, when a dark spot occurs in the sub-pixel (SP) included in any one pixel (P), the sub-pixels (SP) of the same color included in each of the other two pixels (P) are caused to emit light through visual rendering driving, thereby minimizing the visibility of the sub-pixel where the dark spot has occurred.

[0097] In the case of a general transparent display device, since the sub-pixels included in a pixel are arranged adjacent to only one sub-pixel of another pixel, when a dark spot occurs in a sub-pixel, only one adjacent sub-pixel can emit light. Therefore, the adjacent sub-pixel has to emit light up to the data value of the sub-pixel where the dark spot has occurred, which not only requires high power, but also may cause a problem that the driving stress on the emitting sub-pixel becomes severe and the service life is reduced.

[0098] In contrast, the transparent display device 100 according to an embodiment of the present specification is configured such that two or more sub-pixels (or shared sub-pixels) that emit the same color as the sub-pixel where a dark spot has occurred emit light. Compared with the case of a general transparent display device in which only one sub-pixel of the same color emits light, one sub-pixel (or one shared sub-pixel) can be driven with low power, so that the overall power consumption can be reduced, and the reduction of the service life can be minimized or prevented.

[0099] As a result, the transparent display device 100 according to an embodiment of the present specification has one end of the first red sub-pixel (SP1-1) in a protruding form and the other end of the first red sub-pixel (SP1-1) in a form different from the one end, so that the sub-pixels of different pixels can be arranged adjacent to each other, the size (or area) of the non-emitting region (NEA) can be minimized, and through the visual rendering drive when a dark spot occurs, the visibility of the sub-pixel where the dark spot has occurred can be minimized, and high-quality video can be provided.

[0100] On the other hand, by providing the other ends of the plurality of first sub-pixels (SP1) (or first red sub-pixels (SP1-1)), first green sub-pixels (SP1-2), first blue sub-pixels (SP1-3), and first white sub-pixels (SP1-4) flatly (or in a linear form), as shown in FIG. 3, the plurality of first sub-pixels (SP1) can be arranged adjacent to each other while minimizing the size (or area) of the non-emitting region (NEA).

[0101] On the other hand, since each of the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) included in the first pixel (P1) has the same structure as the first red sub-pixel (SP1-1), the description thereof will be omitted.

[0102] Referring to FIG. 4 again, the bank 115 can be provided on the planarization layer 113. Further, the bank 115 can be provided between the pixel electrodes 114. Furthermore, the bank 115 can be formed to cover each end of the pixel electrode 114 so that a part of each of the pixel electrodes 114 is exposed. Thereby, the thickness of the organic light-emitting layer 116 becomes thin at each end of the pixel electrode 114, and it is possible to prevent the pixel electrode 114 and the counter electrode 117 from coming into contact with each other.

[0103] The bank 115 can define the light-emitting regions (EA1, EA2, EA3, EA4) of each of the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4). Each light-emitting region (EA1, EA2, EA3, EA4) of the sub-pixels (SP1-1, SP1-2, SP1-3, SP1-4) indicates a region where the pixel electrode 114, the organic light-emitting layer 116, and the counter electrode 117 are laminated in this order, and holes from the pixel electrode 114 and electrons from the counter electrode 117 are combined with each other in the organic light-emitting layer 116 to emit light. In this case, the region where the bank 115 is formed does not emit light and thus becomes a non-light-emitting region (NEA), and the region where the bank 115 is not formed and the pixel electrode 114 is exposed can become the light-emitting regions (EA1, EA2, EA3, EA4). However, it is not necessarily limited to this. As shown in FIG. 4, when the bank 115 partially overlaps the transmissive portion (TA), the non-light-emitting region (NEA) can mean the region where the black matrix (BM) is disposed.

[0104] The bank 115 can be formed of an organic film such as an acrylic resin, an epoxy resin, a phenol resin, a polyamide resin, or a polyimide resin.

[0105] The organic light-emitting layer 116 can be provided on the pixel electrode 114. The organic light-emitting layer 116 can include a hole transport layer, a light-emitting layer, and an electron transport layer. In this case, when a voltage is applied between the pixel electrode 114 and the counter electrode 117, 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.

[0106] In one embodiment, the organic light-emitting layer 116 can be a common layer commonly formed on the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4). Here, the light-emitting layer can be a white light-emitting layer that emits white light.

[0107] In another embodiment, in the organic light-emitting layer 116, the light-emitting layer can be separately formed for the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4). As an example, a red light-emitting layer that emits red light can be formed in the first red sub-pixel (SP1-1), a green light-emitting layer that emits green light can be formed in the first green sub-pixel (SP1-2), a blue light-emitting layer that emits blue light can be formed in the first blue sub-pixel (SP1-3), and a white light-emitting layer that emits white light can be formed in the first white sub-pixel (SP1-4). In such a case, the light-emitting layer of the organic light-emitting layer 116 is not formed in the transmissive portion (TA).

[0108] The counter electrode 117 can be provided on the organic light-emitting layer 116 and the bank 115. The counter electrode 117 can be provided not only in the light-emitting region (EA) and the non-light-emitting region (NEA), but also in the transmissive portion (TA), but is not necessarily limited thereto. The counter electrode 117 may be provided only in the light-emitting region (EA) and the non-light-emitting region (NEA) and may not be provided in the transmissive portion (TA) for improving the transmittance.

[0109] Such a counter electrode 117 can be a common layer that is commonly formed on the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) and to which the same voltage is applied. The counter electrode 117 can be made of a conductive material that can transmit light. As an example, the counter electrode 117 can be formed from a low-resistance metal material, such as silver (Ag), or an alloy of magnesium (Mg) and silver (Ag). The counter electrode 117 can be a cathode electrode or a second electrode.

[0110] On the light-emitting element, a sealing layer 118 can be provided. The sealing layer 118 can be formed on the counter electrode 117 so as to cover the counter electrode 117. The sealing layer 118 serves to prevent oxygen or moisture from penetrating into the organic light-emitting layer 116 and the counter electrode 117. For this purpose, the sealing layer 118 can include at least one inorganic film and at least one organic film.

[0111] On the other hand, although not shown in FIG. 4, a capping layer can be further formed between the counter electrode 117 and the sealing layer 118.

[0112] On the sealing layer 118, a color filter (CF) can be provided. The color filter (CF) can be provided on one surface of the counter substrate 200 facing the substrate 110. In such a case, the substrate 110 provided with the sealing layer 118 and the counter substrate 200 provided with the color filter (CF) can be joined together by a separate adhesive layer (not shown). An example of the adhesive layer can be an optically clear resin layer (OCR) or an optically clear adhesive film (OCA).

[0113] The color filter (CF) can be patterned separately for the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4). Specifically, the color filter (CF) can include a first color filter, a second color filter, and a third color filter. The first color filter (CF1) can be arranged to correspond to the first light-emitting region (EA1) of the first red sub-pixel (SP1-1), and can be a red color filter that transmits red light. The second color filter can be arranged to correspond to the second light-emitting region (EA2) of the first green sub-pixel (SP1-2), and can be a green color filter that transmits green light. The third color filter can be arranged to correspond to the third light-emitting region (EA3) of the first blue sub-pixel (SP1-3), and can be a blue color filter that transmits blue light. The color filter (CF) can further include a fourth color filter arranged to correspond to the fourth light-emitting region (EA4) of the first white sub-pixel (SP1-4) which is a white sub-pixel. In such a case, the fourth color filter can be made of a transparent organic substance that transmits white light. Or, when the organic light-emitting layer 116 is provided to emit white light, the first white sub-pixel (SP1-4) may not be provided with a color filter.

[0114] A black matrix (BM) can be provided between the color filters (CF) and between the color filter (CF) and the transmissive portion (TA) (or the first transmissive portion (TA1)). The black matrix (BM) is provided between the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4), and can prevent color mixing from occurring between adjacent sub-pixels.

[0115] Such a black matrix (BM) can include a light-absorbing substance, for example, a black dye that absorbs all light in the visible light wavelength band.

[0116] Hereinafter, with reference to FIG. 3, the structure of a pixel (P) included in the transparent display device 100 according to an embodiment of the present specification, data lines (DL1, DL2, DL3, DL4), a pixel power supply line (EVDD), a common power supply line (EVSS), and drive transistors (R1, G1, B1, W1) (or 112) included in the pixel (P) will be specifically described with respect to an example of their arrangement.

[0117] As described above, the display area (DA) includes a plurality of pixels (P), and each of the plurality of pixels (P) includes a plurality of sub-pixels (SP) and a plurality of transmissive portions (TA). Each of the plurality of sub-pixels (SP) can include a light-emitting region (EA) and a non-light-emitting region (NEA).

[0118] For example, the plurality of sub-pixels (SP) included in the first pixel (P1) can include two sub-pixels (SP) (or the first red sub-pixel (SP1-1) and the first green sub-pixel (SP1-2)) arranged in the first direction (D1) and two sub-pixels (SP) (or the first blue sub-pixel (SP1-3) and the first white sub-pixel (SP1-4)) arranged in the second direction (D2).

[0119] The plurality of transmissive portions (TA) included in the first pixel (P1) can include a first transmissive portion (TA1) arranged between the first red sub-pixel (SP1-1) and the first blue sub-pixel (SP1-3), a second transmissive portion (TA2) arranged between the first blue sub-pixel (SP1-3) and the first green sub-pixel (SP1-2), a third transmissive portion (TA3) arranged between the first green sub-pixel (SP1-2) and the first white sub-pixel (SP1-4), and a fourth transmissive portion (TA4) arranged between the first white sub-pixel (SP1-4) and the first red sub-pixel (SP1-1).

[0120] As shown in FIG. 3, each of the first transmissive portion (TA1), the second transmissive portion (TA2), the third transmissive portion (TA3), and the fourth transmissive portion (TA4) can be provided in a triangular form. By arranging a plurality of sub-pixels (SP) in a windmill form and arranging a triangular transmissive portion (TA) between the plurality of sub-pixels (SP), the first pixel (P1) can be provided in a quadrangular form. Also, since one side end of each of the plurality of sub-pixels (SP) is provided in a protruding form, the plurality of pixels (P) can be arranged close to each other while minimizing the size (or area) of the non-emitting region (NEA).

[0121] On the other hand, each of the plurality of pixels (P) can include a center region (CTA). For example, the first pixel (P) can include a center region (CTA) in which the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) are arranged adjacent to each other. According to an example, the center region (CTA) can be a region where the other ends provided flatly (or linearly) at the pixel electrodes 114 of the first red sub-pixel (SP1-1), the pixel electrodes 114 of the first green sub-pixel (SP1-2), the pixel electrodes 114 of the first blue sub-pixel (SP1-3), and the pixel electrodes 114 of the first white sub-pixel (SP1-4) are adjacent as shown in FIG. 3. Therefore, the center region (CTA) can be a region including the center of each of the plurality of pixels (P).

[0122] In the transparent display device 100 according to an embodiment of the present specification, the first transmissive portion (TA1) can be provided to have a symmetric form with respect to the third transmissive portion (TA3) based on the center region (CTA). And the second transmissive portion (TA2) can be provided to have a symmetric form with respect to the fourth transmissive portion (TA4) based on the center region (CTA). For example, each of the first transmissive portion (TA1) and the third transmissive portion (TA3) can be provided in a triangular form symmetric with respect to the center region (CTA). And each of the second transmissive portion (TA2) and the fourth transmissive portion (TA4) can be provided in a triangular form symmetric with respect to the center region (CTA). Therefore, each of the plurality of pixels (P) can be provided in a quadrilateral form, and by arranging such quadrilateral pixels adjacent to each other, the triangular transmissive portions (TA) of each pixel can be arranged adjacent to each other. Since the plurality of adjacent transmissive portions (TA) are provided in a quadrilateral or diamond form, the transmittance can be improved as compared with the case where the plurality of transmissive portions are arranged spaced apart from each other.

[0123] Referring to FIG. 3, each of the plurality of sub-pixels (SP) can include circuit elements such as thin film transistors, capacitors (R2, G2, B2, W2), etc. and light emitting elements. The thin film transistor can include driving transistors (R1, G1, B1, W1) (or 112), scan transistors (R3, G3, B3, W3), and sensing transistors (R4, G4, B4, W4).

[0124] According to an embodiment of the present specification, since the transparent display device 100 is provided by an upper emission method, capacitors (R2, G2, B2, W2), driving transistors (R1, G1, B1, W1) (or 112), scan transistors (R3, G3, B3, W3), and sensing transistors (R4, G4, B4, W4) included in each of the plurality of sub-pixels (SP) can be disposed to overlap a pixel electrode 114 (or a light emitting region (EA)) including each sub-pixel (SP). That is, the capacitors (R2, G2, B2, W2), driving transistors (R1, G1, B1, W1) (or 112), scan transistors (R3, G3, B3, W3), and sensing transistors (R4, G4, B4, W4) included in each of the plurality of sub-pixels (SP) can be disposed under the pixel electrode 114.

[0125] In addition, each of the data lines (DL1, DL2, DL3, DL4), pixel power supply line (EVDD), and common power supply line (EVSS) included in each of the plurality of pixels (P) can be disposed to partially overlap each of the plurality of sub-pixels (SP).

[0126] For example, a first data line (DL1) for driving a first red sub-pixel (SP1-1) can be disposed to partially overlap the first red sub-pixel (SP1-1) and the first blue sub-pixel (SP1-3). More specifically, the first data line (DL1) can be disposed to partially overlap the pixel electrode 114 of the first red sub-pixel (SP1-1) and the pixel electrode 114 of the first blue sub-pixel (SP1-3). Therefore, in the transparent display device 100 according to an embodiment of the present specification, by disposing the first data line (DL1) to partially overlap the pixel electrode 114 of the first red sub-pixel (SP1-1) and the pixel electrode 114 of the first blue sub-pixel (SP1-3), it is possible to minimize or prevent the first data line (DL1) from overlapping the second transmission portion (TA2) and the fourth transmission portion (TA4).

[0127] The first data line (DL1) is arranged to be long in the first direction (D1) in the first red sub-pixel (SP1-1), arranged to be long in the second direction (D2) in the first blue sub-pixel (SP1-3), and connected to the scan transistor (R3) of the first red sub-pixel (SP1-1), so that a data voltage can be supplied to the first red sub-pixel (SP1-1).

[0128] The second data line (DL2) for driving the first blue sub-pixel (SP1-3) can be arranged to be partially superimposed on the first red sub-pixel (SP1-1) and the first blue sub-pixel (SP1-3) and separated from the first data line (DL1). More specifically, the second data line (DL2) can be arranged to be partially superimposed on the pixel electrode 114 of the first red sub-pixel (SP1-1) and the pixel electrode 114 of the first blue sub-pixel (SP1-3). Therefore, in the transparent display device 100 according to an embodiment of the present specification, since the second data line (DL2) is arranged to be partially superimposed on the pixel electrode 114 of the first red sub-pixel (SP1-1) and the pixel electrode 114 of the first blue sub-pixel (SP1-3), it is possible to minimize or prevent the second data line (DL2) from being superimposed on the first transmissive portion (TA1).

[0129] The second data line (DL2) is arranged to be long in the first direction (D1) in the first red sub-pixel (SP1-1), arranged to be long in the second direction (D2) in the first blue sub-pixel (SP1-3), and connected to the scan transistor (B3) of the first blue sub-pixel (SP1-3), so that a data voltage can be supplied to the first blue sub-pixel (SP1-3).

[0130] The third data line (DL3) for driving the first white sub-pixel (SP1-4) can be arranged to partially overlap with the first white sub-pixel (SP1-4) and the first green sub-pixel (SP1-2). More specifically, the third data line (DL3) can be arranged to partially overlap with the pixel electrode 114 of the first white sub-pixel (SP1-4) and the pixel electrode 114 of the first green sub-pixel (SP1-2). Therefore, in the transparent display device 100 according to an embodiment of the present specification, the third data line (DL3) is arranged to partially overlap with the pixel electrode 114 of the first white sub-pixel (SP1-4) and the pixel electrode 114 of the first green sub-pixel (SP1-2), so that the third data line (DL3) can be minimized or prevented from overlapping with the second transmission portion (TA2) and the fourth transmission portion (TA4).

[0131] The third data line (DL3) is arranged to be long in the second direction (D2) in the first white sub-pixel (SP1-4), and is arranged to be long in the first direction (D1) in the first green sub-pixel (SP1-2), and is connected to the scan transistor (W3) of the first white sub-pixel (SP1-4), so that a data voltage can be supplied to the first white sub-pixel (SP1-4).

[0132] The fourth data line (DL4) for driving the first green sub-pixel (SP1-2) can be arranged to partially overlap with the first white sub-pixel (SP1-4) and the first green sub-pixel (SP1-2), and be spaced apart from the third data line (DL3). More specifically, the fourth data line (DL4) can be arranged to partially overlap with the pixel electrode 114 of the first white sub-pixel (SP1-4) and the pixel electrode 114 of the first green sub-pixel (SP1-2). Therefore, in the transparent display device 100 according to an embodiment of the present specification, the fourth data line (DL4) is arranged to partially overlap with the pixel electrode 114 of the first white sub-pixel (SP1-4) and the pixel electrode 114 of the first green sub-pixel (SP1-2), so that the fourth data line (DL4) can be minimized or prevented from overlapping with the third transmission portion (TA3).

[0133] The fourth data line (DL4) is arranged to be long in the second direction (D2) in the first white sub-pixel (SP1-4), long in the first direction (D1) in the first green sub-pixel (SP1-2), and connected to the scan transistor (G3) of the second green sub-pixel (SP1-2), and can supply a data voltage to the second green sub-pixel (SP1-2).

[0134] As a result, the transparent display device 100 according to an embodiment of the present specification is provided so that the data lines (DL1, DL2, DL3, DL4) are partially overlapped with the pixel electrodes 114 of each sub-pixel (SP), and thus the transmittance improvement can be maximized as compared with the case where the data lines are arranged in the transmissive portion.

[0135] Referring to FIG. 3 again, each of the plurality of pixels (P) can include a pixel power supply line (EVDD). For example, the first pixel (P1) can include a pixel power supply line (EVDD) for applying a pixel driving voltage to each of the plurality of first sub-pixels (SP1).

[0136] As shown in FIG. 3, the pixel power supply line (EVDD) arranged in the first pixel (P1) can be arranged to partially overlap the center region (CTA) and overlap each of the plurality of first sub-pixels (SP1). More specifically, the pixel power supply line (EVDD) is arranged to be long in the Y-axis direction in the center region (CTA), and can extend and be arranged to each of the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4). The pixel power supply line (EVDD) extending to each of the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) can be arranged to partially overlap the pixel electrodes 114 of each of the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4).

[0137] The pixel power supply line (EVDD) extending to the first red sub-pixel (SP1-1) can be connected to the driving transistor (R1) of the first red sub-pixel (SP1-1) to apply a pixel driving voltage. The pixel power supply line (EVDD) extending to the first green sub-pixel (SP1-2) can be connected to the driving transistor (G1) of the first green sub-pixel (SP1-2) to apply a pixel driving voltage. The pixel power supply line (EVDD) extending to the first blue sub-pixel (SP1-3) can be connected to the driving transistor (B1) of the first blue sub-pixel (SP1-3) to apply a pixel driving voltage. The pixel power supply line (EVDD) extending to the first white sub-pixel (SP1-4) can be connected to the driving transistor (W1) of the first white sub-pixel (SP1-4) to apply a pixel driving voltage.

[0138] As a result, in the transparent display device 100 according to an embodiment of the present specification, the pixel power supply line (EVDD) arranged in the first pixel (P1) can be arranged in an X shape in the first pixel (P1). FIG. 3 exemplarily shows the first pixel (P1), and each of the plurality of pixels (P) arranged in the display area (DA) can have the same structure as the first pixel (P1). Therefore, in the transparent display device 100 according to an embodiment of the present specification, since the pixel power supply line (EVDD) is partially arranged to overlap with the pixel electrode 114 of each sub-pixel (SP), the transmittance can be improved compared to the case where the pixel power supply line is arranged in the transmissive portion.

[0139] On the other hand, the common power supply line (EVSS) included in the first pixel (P1) can be partially arranged to overlap with each of the first green sub-pixel (SP1-2) and the first white sub-pixel (SP1-4). The common power supply line (EVSS) according to an example can be arranged to be long in the first direction (D1) in the first green sub-pixel (SP1-2) and long in the second direction (D2) in the first white sub-pixel (SP1-4). The common power supply line (EVSS) can be connected to the counter electrode 117 of the first pixel (P1) to apply a common voltage.

[0140] The reference line (RL) included in the first pixel (P1) can be arranged to partially overlap with each of the first red sub-pixel (SP1-1) and the first blue sub-pixel (SP1-3). The reference line (RL) according to an example is arranged to be long in the first direction (D1) in the first red sub-pixel (SP1-1) and can be arranged to be long in the second direction (D2) from the first blue sub-pixel (SP1-3). The reference line (RL) can partially overlap with the center region (CTA). The reference line (RL) is connected to the sensing transistor (R4) of the first red sub-pixel (SP1-1) to supply a reference voltage (or an initialization voltage, a sensing voltage) to the first red sub-pixel (SP1-1). The reference line (RL) is connected to the sensing transistor (B4) of the first blue sub-pixel (SP1-3) to supply a reference voltage (or an initialization voltage, a sensing voltage) to the first blue sub-pixel (SP1-3). In the center region (CTA), the reference line (RL) can extend toward the first white sub-pixel (SP1-4) and be connected to the sensing transistor (W4) of the first white sub-pixel (SP1-4). Therefore, the reference line (RL) can supply a reference voltage (or an initialization voltage, a sensing voltage) to the first white sub-pixel (SP1-4). In the center region (CTA), the reference line (RL) can extend toward the first green sub-pixel (SP1-2) and be connected to the sensing transistor (G4) of the first green sub-pixel (SP1-2). Therefore, the reference line (RL) can supply a reference voltage (or an initialization voltage, a sensing voltage) to the first green sub-pixel (SP1-2).

[0141] According to an embodiment of the present specification, the transparent display device 100 partially superimposes a common power supply line (EVSS) on each pixel electrode 114 of the first green sub-pixel (SP1-2) and the first white sub-pixel (SP1-4), thereby improving the transmittance compared to the case where the common power supply line is disposed in the transmissive portion. Further, according to an embodiment of the present specification, the transparent display device 100 partially superimposes a reference line (RL) on each pixel electrode 114 of the first red sub-pixel (SP1-1) and the first blue sub-pixel (SP1-3), thereby improving the transmittance compared to the case where the reference line is disposed in the transmissive portion.

[0142] Referring to FIG. 3 again, the gate line (GL) is disposed long in the second direction (D2) of the first blue sub-pixel (SP1-3) so as to partially overlap the pixel electrode 114 of the first blue sub-pixel (SP1-3), is disposed in a circular or square form in the center region (CTA), and can be disposed long in the first direction (D1) in the first green sub-pixel (SP1-2) so as to partially overlap the pixel electrode 114 of the first green sub-pixel (SP1-2).

[0143] A gate line (GL) according to one example can extend from a center region (CTA) to a first red sub-pixel (SP1-1) and be connected to a scan transistor (R3) and a sensing transistor (R4) of the first red sub-pixel (SP1-1). Also, the gate line (GL) can extend from the center region (CTA) to a first green sub-pixel (SP1-2) and be connected to a scan transistor (G3) and a sensing transistor (G4) of the first green sub-pixel (SP1-2). Also, the gate line (GL) can extend from the center region (CTA) to a first blue sub-pixel (SP1-3) and be connected to a scan transistor (B3) and a sensing transistor (B4) of the first blue sub-pixel (SP1-3). Also, the gate line (GL) can extend from the center region (CTA) to a first white sub-pixel (SP1-4) and be connected to a scan transistor (W3) and a sensing transistor (W4) of the first white sub-pixel (SP1-4). Thus, the gate line (GL) can supply a gate signal to each of the plurality of sub-pixels (SP) included in the first pixel (P1).

[0144] As a result, the transparent display device 100 according to an embodiment of the present specification is provided such that a plurality of wirings are partially overlapped and arranged on a plurality of sub-pixels (SP) in a limited space, so that the overlapping of the plurality of wirings on the transmissive portion (TA) can be minimized. Thereby, the transmittance can be improved as compared with the case where the plurality of wirings are arranged on the transmissive portion.

[0145] Also, in the case of a general or other transparent display device, in order to prevent the driving of sub-pixels where dark spots have occurred, repair wirings connected to each of the plurality of sub-pixels (or divided sub-pixels) can be arranged on the transmissive portion. In this case, since the repair wirings are connected to the pixel electrodes of each of at least two divided sub-pixels, they are provided in a tri-gun form. Due to the repair wirings having a tri-gun structure arranged on the transmissive portion, the diffraction phenomenon of light passing through the transmissive portion becomes severe, and the visibility of the background or image on the back surface of the transparent display device may be reduced.

[0146] In contrast, the transparent display device 100 according to an embodiment of the present specification is configured such that sub-pixels (SP) included in each of three different pixels (P) are arranged adjacent to each other. As a result, instead of the sub-pixel (SP) where a dark spot has occurred, the sub-pixels (SP) of the same color in each of the two adjacent pixels can be caused to emit light through visual rendering driving, thereby minimizing the perceptibility of the sub-pixel where the dark spot has occurred.

[0147] Therefore, the transparent display device 100 according to an embodiment of the present specification can omit the repair wiring for preventing the driving of the sub-pixel where a dark spot has occurred from the transmissive portion. Thus, it is possible to prevent a decrease in visibility due to the diffraction phenomenon compared to the case where the repair wiring is arranged in the transmissive portion, and it is possible to improve the visibility with respect to the background or the image. Further, the transparent display device 100 according to an embodiment of the present specification is configured such that a plurality of wirings for driving each of the plurality of pixels (P) do not overlap or only minimally overlap the transmissive portion (TA), so that the transmittance of the transmissive portion (TA) can be maximized.

[0148] Hereinafter, with reference to FIG. 5, the visual rendering driving of the transparent display device 100 according to an embodiment of the present specification will be described.

[0149] FIG. 5 is a schematic diagram showing an operating state according to an example of FIG. 2.

[0150] As described above, the transparent display device 100 according to an embodiment of the present specification can express an image to be represented by a specific pixel using adjacent pixels by driving the sub-pixels of the same color in the other two adjacent pixels instead of the sub-pixel where a dark spot has occurred. Such a driving method is visual rendering driving.

[0151] Visual rendering driving according to an example can be implemented by dividing the data value of the sub-pixel where a dark spot has occurred, that is, the sub-pixel where a defect has occurred, and additionally reflecting it in the data value of each of the sub-pixels that emit light of the same color in the two adjacent pixels.

[0152] For example, as shown in FIG. 5, if the first red sub-pixel (SP1-1) of the first pixel (P1) is a defective sub-pixel, the second red sub-pixel (SP2-1) of the second pixel (P2) adjacent to the first pixel (P1) and the third red sub-pixel (SP3-1) of the third pixel (P3) can be driven by separately holding the data values when the first red sub-pixel (SP1-1) is normally driven.

[0153] More specifically, assuming that when each of the first red sub-pixel (SP1-1), the second red sub-pixel (SP2-1), and the third red sub-pixel (SP3-1) is normally driven, the data value of each of the first red sub-pixel (SP1-1), the second red sub-pixel (SP2-1), and the third red sub-pixel (SP3-1) is 30. When the first red sub-pixel (SP1-1) is a defective sub-pixel, each of the second red sub-pixel (SP2-1) and the third red sub-pixel (SP3-1) can be driven with a data value of 45 by dividing the data value of the first red sub-pixel (SP1-1) by 1 / 2 and summing it to the normal data value. Therefore, as shown in FIG. 5, instead of the first red sub-pixel (SP1-1) where a defective point has occurred, each of the second red sub-pixel (SP2-1) and the third red sub-pixel (SP3-1) can emit light with a data value of 45. For example, the second red sub-pixel (SP2-1) and the third red sub-pixel (SP3-1) can receive a data value of 45 by an algorithm preset in the timing control unit 150 and emit light. In this case, the fourth red sub-pixel (SP4-1) of the fourth pixel (P4) can emit light with a normal data value of 30.

[0154] However, not necessarily limited to this, the data value of the first red sub-pixel (SP1-1), which is a dark spot sub-pixel, can be divided into various data values such as 1 / 3 and 2 / 3, or 1 / 4 and 3 / 4, and summed up to each of the second red sub-pixel (SP2-1) and the third red sub-pixel (SP3-1). In this case, the data values of the second red sub-pixel (SP2-1) and the third red sub-pixel (SP3-1) may be different from each other. For example, the second red sub-pixel (SP2-1) can emit light with a data value of 40, and the third red sub-pixel (SP3-1) can emit light with a data value of 50.

[0155] On the other hand, since the second red sub-pixel (SP2-1) and the third red sub-pixel (SP3-1) are sub-pixels that emit light when a dark spot occurs in the first red sub-pixel (SP1-1), they can be represented by shared sub-pixels.

[0156] According to an example of the visual rendering drive as described above (when the data value of the dark spot sub-pixel is divided into 1 / 2), the final data value of each shared sub-pixel can be a value obtained by dividing the sum of the data value of the dark spot sub-pixel and the data values of each of N (N is an integer greater than 1) shared sub-pixels by N. Substituting the above example into such a formula, the final data value of the second red sub-pixel (SP2-1) can be 45, which is obtained by dividing 90, the sum of the data value of the first red sub-pixel (SP1-1) which is 30, the data value of the second red sub-pixel (SP2-1) which is 30, and the data value of the third red sub-pixel (SP3-1) which is 30, by the number of shared sub-pixels which is 2.

[0157] As a result, the transparent display device 100 according to an embodiment of the present specification can minimize the visual recognition of the sub-pixel where a dark spot occurs by causing sub-pixels (or shared sub-pixels) that emit the same color to emit light in each of the other two pixels adjacent to the pixel including the sub-pixel where a dark spot occurs through a visual rendering drive method.

[0158] In addition, in the transparent display device 100 according to an embodiment of the present specification, a sub-pixel (or shared sub-pixel) that emits the same color in each of the other two adjacent pixels instead of the sub-pixel where a dark spot has occurred is caused to emit light at a luminance higher than the normal luminance by a visual rendering driving method, so that it is possible to further prevent the sub-pixel where the dark spot has occurred from being visually recognized by the user, and to provide high-quality video.

[0159] FIG. 6 is a schematic diagram showing an operating state according to another example of FIG. 2.

[0160] Referring to FIG. 6, the transparent display device 100 according to another example of the present specification is the same as the transparent display device according to FIG. 5 described above, except that the visual rendering driving method is changed. Therefore, the same components are assigned the same drawing numbers, and only the different components will be described below.

[0161] In the case of the display device according to FIG. 5 described above, by performing visual rendering driving using the sub-pixels (SP) arranged in each of the two second pixels (P2) and the third pixel (P3) adjacent to the first green sub-pixel (SP1-2) of the first pixel (P1), the visibility of the sub-pixel where the dark spot has occurred can be minimized. That is, in the case of the display device according to FIG. 5, by causing two other sub-pixels to emit light instead of the sub-pixel where the dark spot has occurred, the perceptibility of the sub-pixel where the dark spot has occurred can be minimized.

[0162] On the other hand, in the case of the display device according to FIG. 6, by performing visual rendering driving using the sub-pixels (SP) arranged in each of the three second pixels (P2), the third pixel (P3), and the fourth pixel (P4) adjacent to the first green sub-pixel (SP1-2) of the first pixel (P1), the visibility of the sub-pixel where the dark spot has occurred can be minimized. For example, in the case of the display device according to FIG. 6, it can further include a fourth pixel (P4) arranged adjacent to the first pixel (P1). The fourth pixel (P4) according to an example can include a plurality of fourth sub-pixels (SP4) and a plurality of transmissive portions (TA).

[0163] In the case of the display device according to FIG. 6, one first sub-pixel (SP1) among a plurality of first sub-pixels (SP1) (for example, the first green sub-pixel (SP1-2)) can be arranged adjacent to one second sub-pixel (SP2) among a plurality of second sub-pixels (SP2) (for example, the second blue sub-pixel (SP2-3)), one third sub-pixel (SP3) among a plurality of third sub-pixels (SP3) (for example, the third white sub-pixel (SP3-4)), and one fourth sub-pixel (SP4) among a plurality of fourth sub-pixels (SP4) (for example, the fourth red sub-pixel (SP4-1)).

[0164] As shown in FIG. 6, a plurality of fourth sub-pixels (SP4) according to an example can include a fourth red sub-pixel (SP4-1) arranged in the first direction (D1), a fourth green sub-pixel (SP4-2) adjacent to the fourth red sub-pixel (SP4-1) and arranged in the first direction (D1), a fourth blue sub-pixel (SP4-3) partially adjacent to each of one side of the fourth red sub-pixel (SP4-1) and one side of the fourth green sub-pixel (SP4-2) and arranged in the second direction (D2), and a fourth white sub-pixel (SP4-4) partially adjacent to each of the other side of the fourth red sub-pixel (SP4-1) and the other side of the fourth green sub-pixel (SP4-2) and arranged in the second direction (D2). Here, the first green sub-pixel (SP1-1) can be arranged adjacent to the fourth red sub-pixel (SP4-1).

[0165] Therefore, the transparent display device 100 according to another example of this specification, when the first red sub-pixel (SP1-1) is a dark point sub-pixel, by providing the second red sub-pixel (SP2-1), the third red sub-pixel (SP3-1), and the fourth red sub-pixel (SP4-1) to emit light instead of the first red sub-pixel (SP1-1), can maximize the prevention of visibility of the sub-pixels where dark points occur compared to the case where there are two shared sub-pixels.

[0166] For example, when each of the first red sub-pixel (SP1-1), the second red sub-pixel (SP2-1), the third red sub-pixel (SP3-1), and the fourth red sub-pixel (SP4-1) is driven normally, assuming that the data value of each of the first red sub-pixel (SP1-1), the second red sub-pixel (SP2-1), the third red sub-pixel (SP3-1), and the fourth red sub-pixel (SP4-1) is 30, if the first red sub-pixel (SP1-1) is a dark spot sub-pixel, each of the second red sub-pixel (SP2-1), the third red sub-pixel (SP3-1), and the fourth red sub-pixel (SP4-1) can be driven with a data value of 40 by dividing the data value of the first red sub-pixel (SP1-1) by 1 / 3 and adding it to the normal data value. Therefore, as shown in FIG. 6, instead of the first red sub-pixel (SP1-1), each of the second red sub-pixel (SP2-1), the third red sub-pixel (SP3-1), and the fourth red sub-pixel (SP4-1) can emit light with a data value of 40.

[0167] Each of the first red sub-pixel (SP2-1), the third red sub-pixel (SP3-1), and the fourth red sub-pixel (SP4-1) can receive the application of a data value of 40 by an algorithm preset in the timing control unit 150 and emit light.

[0168] As a result, in the transparent display device 100 according to other examples of the present specification, the data value of the first red sub-pixel (SP1-1) can be divided and summed with the data values of each of the second red sub-pixel (SP2-1), the third red sub-pixel (SP3-1), and the fourth red sub-pixel (SP4-1).

[0169] Therefore, the transparent display device 100 according to other examples of the present specification is provided so that three shared sub-pixels emit light, and while reducing the data voltage of each shared sub-pixel compared to the case where two shared sub-pixels emit light, the difference in brightness from the peripheral sub-pixels can be reduced. Therefore, the transparent display device 100 according to other examples of the present specification can minimize the visibility of dark spot sub-pixels and further improve the service life of the shared sub-pixels compared to the case where two shared sub-pixels emit light.

[0170] On the other hand, in the transparent display device 100 according to another example of the present specification, the data value of the first red sub-pixel (SP1-1), which is a dark spot sub-pixel, can be divided into various data values such as 1 / 4, 2 / 4, and 1 / 4, or 1 / 6, 2 / 6, and 3 / 6, and summed up for each of the second red sub-pixel (SP2-1), the third red sub-pixel (SP3-1), and the fourth red sub-pixel (SP4-1). In this case, the data values of the second red sub-pixel (SP2-1), the third red sub-pixel (SP3-1), and the fourth red sub-pixel (SP4-1) may be different from each other. For example, when the data value of the first red sub-pixel (SP1-1), which is a dark spot sub-pixel, is divided into 1 / 6, 2 / 6, and 3 / 6, the second red sub-pixel (SP2-1) can emit light with a data value of 35, the third red sub-pixel (SP3-1) can emit light with a data value of 40, and the fourth red sub-pixel (SP4-1) can emit light with a data value of 45.

[0171] FIG. 7 is a plan view schematically showing a part of a display area of a transparent display device according to an embodiment of the present specification.

[0172] Referring to FIG. 7, the transparent display device 100 according to an embodiment of the present specification may further include an adjacent area (AJA) in which sub-pixels of four different pixels (P) are arranged adjacent to each other. An example of the adjacent area (AJA) may be an area where the first green sub-pixel (SP1-2) of the first pixel (P1), the second blue sub-pixel (SP2-3) of the second pixel (P2), the third white sub-pixel (SP3-4) of the third sub-pixel (P3), and the fourth red sub-pixel (SP4-1) of the fourth pixel (P4) are arranged adjacent to each other.

[0173] As described above, in the center area (CTA), it may be an area where the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) are arranged adjacent to each other.

[0174] Therefore, the transparent display device 100 according to an embodiment of the present specification can have a structural feature in which adjacent regions (AJA) and a center region (CTA) are alternately arranged in a first direction (D1) or a second direction (D2). Such a configuration can be similarly applied to the transparent display device 100 according to other embodiments of the present specification.

[0175] In the transparent display device 100 according to an embodiment of the present specification, since the sub-pixels (SP) included in each of the four different pixels (P) are arranged close to each other in the adjacent region (AJA), the size (or area) of the non-emitting region (NEA) can be minimized. During visual rendering driving, the distance between the sub-pixels (SP) can be minimized so that dark spot sub-pixels are least visible to the user. Therefore, the transparent display device 100 according to an embodiment of the present specification can provide high-quality video to the user even when including sub-pixels (SP) with dark spots.

[0176] On the other hand, in the above description, the case where the red sub-pixel is a dark spot sub-pixel is described as an example. However, when the green sub-pixel is a dark spot sub-pixel, the green sub-pixels included in each of the other two or more pixels adjacent to the dark spot sub-pixel can emit light as shared sub-pixels by a visual rendering driving method. Similarly, when the blue sub-pixel is a dark spot sub-pixel, the blue sub-pixels included in each of the other two or more pixels adjacent to the dark spot sub-pixel can emit light as shared sub-pixels by a visual rendering driving method. Also, when the white sub-pixel is a dark spot sub-pixel, the white sub-pixels included in each of the other two or more pixels adjacent to the dark spot sub-pixel can emit light as shared sub-pixels by a visual rendering driving method.

[0177] As a result, the transparent display device 100 according to an embodiment of the present specification can minimize the visibility of dark spot sub-pixels by providing at least two or more shared sub-pixels adjacent to the sub-pixels with dark spots to emit light, and can further improve the service life of the shared sub-pixels compared to the case where only one sub-pixel emits light.

[0178] On the one hand, in the transparent display device 100 according to an embodiment of the present specification, the arrangement structure of the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) included in the first pixel (P1) is described by way of example and is not necessarily limited thereto. The arrangement structure of the first red sub-pixel (SP1-1), the first green sub-pixel (SP1-2), the first blue sub-pixel (SP1-3), and the first white sub-pixel (SP1-4) can be variously changed according to the design as long as the windmill form is maintained. For example, the first red sub-pixel (SP1-1) and the first white sub-pixel (SP1-4) can be arranged in a row in the first direction (D1), and the first green sub-pixel (SP1-2) and the first blue sub-pixel (SP1-3) can be arranged in the second direction (D2).

[0179] As described above, the embodiments of the present specification have been described in more detail with reference to the accompanying drawings. However, the present specification is not necessarily limited to such embodiments, and various modifications can be made without departing from the technical idea of the present specification. Therefore, the embodiments disclosed in the present specification are for explaining rather than limiting the technical idea of the present specification, and do not limit the scope of the technical idea of the present specification by such embodiments. Therefore, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive. All technical ideas within the protection scope of the present specification should be construed as being included in the scope of rights of the present specification.

Description of Reference Numerals

[0180] 100: Transparent display device 110: Substrate P: Pixel 111: Inorganic film layer 112: Thin film transistor 113: Overcoat layer 114: Pixel electrode 115: Bank 116: Organic light-emitting layer 117: Counter electrode 118: Encapsulation layer 200: Counter substrate CTA: Center region AJA: Adjacent region EVDD: Pixel power line EVSS: Common power line DL1, DL2, DL3, DL4: Data lines RL: Reference line GL: Gate line

Claims

1. A first pixel disposed on a substrate and having a plurality of first sub-pixels and a plurality of transmissive portions, A second pixel disposed adjacent to the first pixel and having a plurality of second sub-pixels and a plurality of transmissive portions, and A third pixel disposed adjacent to the first pixel and the second pixel and having a plurality of third sub-pixels and a plurality of transmissive portions, A transparent display device, wherein one first sub-pixel among the plurality of first sub-pixels, one second sub-pixel among the plurality of second sub-pixels, and one third sub-pixel among the plurality of third sub-pixels are disposed adjacent to each other.

2. The transparent display device according to claim 1, wherein the one first sub-pixel, the one second sub-pixel, and the one third sub-pixel emit light of different colors from each other.

3. The plurality of first sub-pixels include A first red sub-pixel disposed in a first direction, A first green sub-pixel disposed adjacent to the first red sub-pixel and in the first direction, A first blue sub-pixel disposed partially adjacent to each of one side of the first red sub-pixel and one side of the first green sub-pixel and in a second direction, and A first white sub-pixel disposed partially adjacent to the other side of the first red sub-pixel and the other side of the first green sub-pixel and in the second direction, the transparent display device according to claim 1.

4. One end of each sub-pixel of the plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels is provided in a protruding form, The transparent display device according to claim 1, wherein the other end of each sub-pixel of the plurality of first sub-pixels, the plurality of second sub-pixels, and the plurality of third sub-pixels is provided in a form different from that of the one end.

5. The one end is a portion adjacent to a sub-pixel of another pixel, The transparent display device according to claim 4, wherein the other end is a portion adjacent to another sub-pixel of the same pixel.

6. The transparent display device according to claim 3, further including a center region where the first red sub-pixel, the first blue sub-pixel, the first green sub-pixel, and the first white sub-pixel are disposed adjacent to each other.

7. The plurality of transmissive portions of the first pixel include A first transmissive portion disposed between the first red sub-pixel and the first blue sub-pixel, A second transmissive portion disposed between the first blue sub-pixel and the first green sub-pixel, A third transmissive portion disposed between the first green sub-pixel and the first white sub-pixel, and A fourth transmissive portion disposed between the first white sub-pixel and the first red sub-pixel, The transparent display device according to claim 6, wherein each of the first transmissive portion, the second transmissive portion, the third transmissive portion, and the fourth transmissive portion has a triangular shape.

8. The first transmissive portion has a symmetrical form with respect to the third transmissive portion with reference to the center region, The second transmissive portion has a symmetrical form with respect to the fourth transmissive portion with reference to the center region, the transparent display device according to claim 7.

9. Further comprising a pixel power line for applying a pixel driving voltage to each of the plurality of first sub-pixels, The pixel power line partially overlaps the center region and overlaps each of the plurality of first sub-pixels, the transparent display device according to claim 6.

10. The pixel power line extends in a preset direction in the center region so as to be arranged in an X shape in the first pixel, and extends into each of the first red sub-pixel, the first green sub-pixel, the first blue sub-pixel, and the first white sub-pixel and is arranged therein, the transparent display device according to claim 9.

11. Further comprising a common power line for applying a common voltage to each of the plurality of first sub-pixels, The common power line is arranged so as to partially overlap the first green sub-pixel and the first white sub-pixel, the transparent display device according to claim 6.

12. Further comprising a reference line for applying a reference voltage to each of the plurality of first sub-pixels, The reference line is arranged so as to partially overlap the first red sub-pixel and the first blue sub-pixel, the transparent display device according to claim 6.

13. Further comprising a gate line for supplying a gate signal to each of the plurality of first sub-pixels, The gate line is arranged so as to partially overlap the first blue sub-pixel, is arranged in a circular or square shape in the center region, and is arranged so as to partially overlap the first green sub-pixel, the transparent display device according to claim 6.

14. The plurality of second sub-pixels are A second red sub-pixel arranged in the first direction, A second green sub-pixel adjacent to the second red sub-pixel and arranged in the first direction, A second blue sub-pixel partially adjacent to each of one side of the second red sub-pixel and one side of the second green sub-pixel and arranged in the second direction, and A second white sub-pixel partially adjacent to each of the other side of the second red sub-pixel and the other side of the second green sub-pixel and arranged in the second direction, The first green sub-pixel is arranged adjacent to the second blue sub-pixel, The transparent display device according to claim 3, wherein the first white sub-pixel is arranged adjacent to the second red sub-pixel.

15. The plurality of third sub-pixels include A third red sub-pixel arranged in the first direction, A third green sub-pixel adjacent to the third red sub-pixel and arranged in the first direction, A third blue sub-pixel partially adjacent to each of one side of the third red sub-pixel and one side of the third green sub-pixel and arranged in the second direction, and A third white sub-pixel partially adjacent to each of the other side of the third red sub-pixel and the other side of the third green sub-pixel and arranged in the second direction, The first green sub-pixel is arranged adjacent to the third white sub-pixel, The transparent display device according to claim 14, wherein the first blue sub-pixel is arranged adjacent to the third red sub-pixel.

16. When the first red sub-pixel is a dark point sub-pixel, the second red sub-pixel and the third red sub-pixel emit light instead of the first red sub-pixel, according to the transparent display device of claim 15.

17. The data value of the first red sub-pixel is divided, and the divided data values are respectively added to the data values of the second red sub-pixel and the third red sub-pixel, according to the transparent display device of claim 16.

18. When the first red sub-pixel is a dark point sub-pixel, the second red sub-pixel and the third red sub-pixel are shared sub-pixels, The final data value of each of the shared sub-pixels is a value obtained by dividing the sum of the data value of the dark point sub-pixel and the data values of each of N (N is an integer greater than 1) of the shared sub-pixels by N, according to the transparent display device of claim 16.

19. Further including a first data line for driving the first red sub-pixel, The transparent display device according to claim 3, wherein the first data line is arranged partially overlapping the first red sub-pixel and the first blue sub-pixel.

20. Further including a second data line for driving the first blue sub-pixel, The transparent display device according to claim 19, wherein the second data line partially overlaps the first red sub-pixel and the first blue sub-pixel and is arranged spaced apart from the first data line.

21. Further including a third data line for driving the first white sub-pixel, The transparent display device according to claim 3, wherein the third data line is arranged partially overlapping the first white sub-pixel and the first green sub-pixel.

22. further comprising a fourth data line for driving the first green sub-pixel, wherein the fourth data line is partially superimposed on the first white sub-pixel and the first green sub-pixel and is arranged spaced apart from the third data line, the transparent display device according to claim 21.

23. further comprising a fourth pixel arranged adjacent to the first pixel and having a plurality of fourth sub-pixels and a plurality of transmissive portions, wherein one first sub-pixel among the plurality of first sub-pixels, one second sub-pixel among the plurality of second sub-pixels, one third sub-pixel among the plurality of third sub-pixels, and one fourth sub-pixel among the plurality of fourth sub-pixels are arranged adjacent to each other, the transparent display device according to claim 15.

24. wherein the plurality of fourth sub-pixels include a fourth red sub-pixel arranged in the first direction, a fourth green sub-pixel arranged adjacent to the fourth red sub-pixel and in the first direction, a fourth blue sub-pixel arranged partially adjacent to each of one side of the fourth red sub-pixel and one side of the fourth green sub-pixel and in the second direction, and a fourth white sub-pixel arranged partially adjacent to each of the other side of the fourth red sub-pixel and the other side of the fourth green sub-pixel and in the second direction, wherein the first green sub-pixel is adjacent to the fourth red sub-pixel, the transparent display device according to claim 23.

25. when the first red sub-pixel is a dark point sub-pixel, the second red sub-pixel, the third red sub-pixel, and the fourth red sub-pixel emit light instead of the first red sub-pixel, the transparent display device according to claim 24.

26. wherein the data value of the first red sub-pixel is divided, and the divided data values are respectively added to the data values of each of the second red sub-pixel, the third red sub-pixel, and the fourth red sub-pixel, the transparent display device according to claim 25.

27. an adjacent region where the first green sub-pixel, the second blue sub-pixel, the third white sub-pixel, and the fourth red sub-pixel are adjacent to each other, and a center region where the first red sub-pixel, the first blue sub-pixel, the first green sub-pixel, and the first white sub-pixel are adjacent to each other, wherein the adjacent region and the center region are alternately arranged in the first direction or the second direction, the transparent display device according to claim 24.

28. a plurality of pixels each arranged on a substrate and having a plurality of sub-pixels and a plurality of transmissive portions, and wiring for driving the plurality of sub-pixels, The plurality of sub-pixels include two sub-pixels arranged in a first direction and two sub-pixels arranged in a second direction so as to be arranged in an X form in each of the pixels. The transmissive portion is arranged between every two of the plurality of sub-pixels. The wiring is a transparent display device that does not overlap with the transmissive portion and partially overlaps with the plurality of sub-pixels. **Claim 29** The transparent display device according to claim 28, wherein each of the plurality of transmissive portions has a triangular form. **Claim 30** One end of each of the plurality of sub-pixels is provided in a protruding form. The transparent display device according to claim 28, wherein the other end of each of the plurality of sub-pixels is provided in a shape different from that of the one end. **Claim 31** The one end of each of the plurality of sub-pixels is a portion adjacent to a sub-pixel of another pixel. The transparent display device according to claim 30, wherein the other end of each of the plurality of sub-pixels is a portion adjacent to another sub-pixel of the same pixel.

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