Transparent display device

Abstract

The present disclosure discloses a transparent display device including a substrate including a transmissive region and a non-transmissive region including a light emitting region in which a light emitting element is disposed, a touch sensor disposed above the transmissive region of the substrate, a touch sensor line disposed above the non-transmissive region of the substrate and extending in a first direction, a touch sensor contact portion disposed in the transmissive region and configured to electrically connect the touch sensor and a touch sensor connection line extending in a second direction, and a touch sensor bridge pattern disposed between the touch sensor contact portion and the touch sensor connection line.

Description

Technical Field

[0001] This disclosure relates to transparent display devices. Background Technology

[0002] With the advancement of the information society, the attention and demand for display devices configured to display images have increased in various forms. Therefore, display devices such as liquid crystal displays (LCDs), organic light-emitting displays (OLEDs), micro-light-emitting diodes (micro-LEDs), and quantum dot displays (QDs) are used.

[0003] Recently, there has been active research on transparent display devices that display images to users, transmit light, and allow users to view objects or images located behind the display device.

[0004] Transparent display devices can include multiple touch sensors and multiple touch sensor lines to achieve touch functionality. However, it is not easy to form multiple touch sensors and multiple touch sensor lines in transparent display devices, or the process is complex, which increases the possibility of defects in the manufacturing process.

[0005] The above-described background art may be the inventor's inference regarding this disclosure, or it may be technical information learned through practicing the embodiments of this disclosure. However, the above-described background art may not be prior art disclosed to the public prior to this application. Summary of the Invention

[0006] Typically, defect detection processes are required in the manufacturing process of display devices to improve productivity, and repair processes are required for the detected defects.

[0007] The inventors of this disclosure have invented a transparent display device with a novel structure, recognizing that the contact area in the contact region connecting the touch sensor and the touch sensor line is an important factor in order to more accurately detect defects generated in the manufacturing process, and improving the accuracy of defect detection through various experiments.

[0008] The purpose of this disclosure is to provide a transparent display device that can increase the contact area in the contact portion where the touch sensor and the touch sensor line are connected to each other.

[0009] According to one aspect of this disclosure, the above and other objectives can be achieved by providing a transparent display device comprising: a substrate including a transmissive region and a non-transmissive region, the non-transmissive region including a light-emitting region in which a light-emitting element is disposed; a touch sensor disposed above the transmissive region of the substrate; a touch sensor line disposed above the non-transmissive region of the substrate and extending in a first direction; a touch sensor contact portion disposed in the transmissive region and configured to electrically connect the touch sensor and a touch sensor connecting line extending in a second direction; and a touch sensor bridge pattern disposed between the touch sensor contact portion and the touch sensor connecting line.

[0010] In addition to the effects of this disclosure as described above, other advantages and features of this disclosure will be clearly understood by those skilled in the art based on the above description. Attached Figure Description

[0011] The above and other objects, features and other advantages of this disclosure will become more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0012] Figure 1 This is a schematic plan view illustrating a transparent display device according to one embodiment of the present disclosure;

[0013] Figure 2 It is a schematic example of setting Figure 1 A planar view of an example of pixels in region A;

[0014] Figure 3 This is an example Figure 2 A plan view of the signal lines, touch sensor lines, and an example of the touch sensor in region B.

[0015] Figure 4 This is an example along Figure 3 A cross-sectional view of an example of I-I';

[0016] Figure 5 This is an example along Figure 3 A cross-sectional view of example II-II';

[0017] Figure 6A Examples include Figure 3 A plan view of the first embodiment of the touch sensor contact portion in region C;

[0018] Figure 6B This is an example along Figure 6A A cross-sectional view of example III-III';

[0019] Figure 6C This is an example along Figure 6A A cross-sectional view of an example of IV-IV';

[0020] Figure 7A Examples include Figure 3 A plan view of the second embodiment of the touch sensor contact portion in region C;

[0021] Figure 7B This is an example along Figure 7A A cross-sectional view of an example of V-V';

[0022] Figure 8A Examples include Figure 3 A plan view of the third embodiment of the touch sensor contact portion in region C;

[0023] Figure 8B This is an example along Figure 8A A cross-sectional view of an example of VI-VI';

[0024] Figure 9 Examples include Figure 3 A plan view of the fourth embodiment of the touch sensor contact portion in region C;

[0025] Figure 10A Examples include Figure 3 A plan view of the fifth embodiment of the touch sensor contact portion in region C;

[0026] Figure 10B This is an example along Figure 10A Cross-sectional views of examples VII-VII'; and

[0027] Figure 10C This is an example along Figure 10A Cross-sectional view of example VIII-VIII'. Detailed Implementation

[0028] The advantages and features of this disclosure, and its implementation methods, will be illustrated by the following description of embodiments with reference to the accompanying drawings. However, this disclosure may be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to make this disclosure thorough and complete, and to fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0029] The shapes, dimensions, scales, angles, and quantities disclosed in the drawings used to describe embodiments of this disclosure are merely examples, and therefore, this disclosure is not limited to the details shown. Throughout the specification, the same reference numerals denote the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where such omissions would unnecessarily obscure the essential points of this disclosure. Where terms such as “comprising,” “having,” and “including” are used in this specification, additional parts may be added, unless “only” is used. Unless otherwise stated, singular terms may include plural forms.

[0030] Although not explicitly described, the element is interpreted to include the error range when it is constructed.

[0031] When describing positional relationships, such as when the positional relationship is described as "on," "above," "below," and "next to," one or more parts may be arranged between two other parts, unless "only" or "directly" is used.

[0032] It should be understood that although terms such as "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this disclosure, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0033] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “only” or “directly” is used.

[0034] It should be understood that although terms such as "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of the invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0035] The terms “first horizontal axis direction”, “second horizontal axis direction” and “vertical axis direction” should not be interpreted solely based on the geometric relationship that the respective directions are perpendicular to each other, but can be expressed as directions with a wide range of orientations within the functionally operable range of the components of this disclosure.

[0036] The term "at least one" should be understood to include any and all combinations of one or more items listed in the relevant list. For example, "at least one of the first, second, and third items" means a combination of all items derived from two or more of the first, second, and third items, as well as the first, second, or third item.

[0037] Features of the various embodiments of this disclosure may be partially or entirely linked or combined with each other, and may interoperate differently with each other and be technically driven, as will be fully understood by those skilled in the art. Embodiments of this disclosure may be performed independently of each other, or may be performed together in an interdependent relationship.

[0038] In the following, preferred embodiments of the transparent display device according to the present disclosure will be described in detail with reference to the accompanying drawings. Wherever possible, the same reference numerals will be used in all the drawings to denote the same or similar parts. Since the scale of each element shown in the drawings differs from the actual scale for ease of description, the present disclosure is not limited to the scales shown.

[0039] Figure 1 This is a schematic plan view illustrating a transparent display device according to one embodiment of the present disclosure.

[0040] In the following text, the X-axis represents the direction parallel to the scan lines, the Y-axis represents the direction parallel to the data lines, and the Z-axis represents the height direction of the transparent display device.

[0041] The transparent display device according to one embodiment of the present disclosure is implemented as an organic light-emitting display (OLED) device, but it can also be implemented as a liquid crystal display (LCD) device, a micro light-emitting diode (LED) display device, a quantum dot display (QD) device, etc.

[0042] Reference Figure 1 A transparent display device according to one embodiment of the present disclosure may include a transparent display panel 110, the transparent display panel 110 including a display area DA for displaying an image by means of pixels formed thereon, and a non-display area NDA on which no image is displayed.

[0043] In the display area DA of the transparent display panel 110, there are a first signal line SL1, a second signal line SL2, and a pixel. In the non-display area NDA, there is a pad area PA for pads arranged thereon and at least one gating driver 205.

[0044] The first signal line SL1 may extend in a first direction (or the Y-axis direction) and may intersect the second signal line SL2 in the display area DA. The second signal line SL2 may extend in a second direction (or the X-axis direction). Pixels are disposed in the area where the first signal line SL1 and the second signal line SL2 intersect each other and are configured to emit predetermined light to display an image.

[0045] The gating driver 205 can be connected to a scan line, thereby providing it with a scan signal. The gating driver 205 can be implemented on one or both outer sides of the display area DA of the transparent display panel 110 using an in-panel gating driver (GIP) method or a tape auto-joining (TAB) method.

[0046] The pad area PA of the transparent display panel 110 can be electrically connected to a source drive integrated circuit, circuit board, or timing controller connected via a flexible circuit film.

[0047] To implement touch functionality on the transparent display panel 110, in addition to the first signal line SL1, the second signal line SL2, and pixels, a touch sensor line and a touch sensor may also be included. (See below for further details.) Figures 2 to 10C A detailed description of the touch sensor cable and the touch sensor itself.

[0048] Figure 2 This is a schematic example of setting Figure 1 A plan view of examples of pixels in region A. Figure 3 This is an example Figure 2 A plan view of the signal lines, touch sensor lines, and an example of the touch sensor in region B.

[0049] Combination Figure 1 Reference Figure 2 and Figure 3 The display area DA can include the transmissive area TA and the non-transmissive area NTA, such as Figure 2 As shown. The transmissive region TA is the area through which most of the light incident from the outside is transmitted, and the non-transmissive region NTA is the area through which most of the light incident from the outside is not transmitted. Due to the transmissive region TA, the user can see objects or backgrounds located on the rear surface (or back side) of the transparent display panel 110.

[0050] The non-transmissive region NTA may include a first non-transmissive region NTA1, a second non-transmissive region NTA2, and a pixel P.

[0051] Pixel P can be located at each intersection of the first non-transmissive region NTA1 and the second non-transmissive region NTA2, and can emit light to display an image. The emitting region EA can correspond to the region from which light is emitted from pixel P.

[0052] like Figure 2 As shown, each pixel in pixel P may include a first sub-pixel SP1, a second sub-pixel SP2, a third sub-pixel SP3, and a fourth sub-pixel SP4. The first sub-pixel SP1 includes a first emitting region EA1 that emits a first color of light, the second sub-pixel SP2 includes a second emitting region EA2 that emits a second color of light, the third sub-pixel SP3 may include a third emitting region EA3 that emits a third color of light, and the fourth sub-pixel SP4 may include a fourth emitting region EA4 that emits a fourth color of light. For example, the first to fourth emitting regions EA1, EA2, EA3, and EA4 may emit different colors of light. As an example, the first emitting region EA1 may emit green light, the second emitting region EA2 may emit red light, the third emitting region EA3 may emit blue light, and the fourth emitting region EA4 may emit white light, but this is not a limitation. Furthermore, the arrangement order or form of each sub-pixel in sub-pixels SP1, SP2, SP3, and SP4 can vary widely.

[0053] In a transparent display panel 110 according to one embodiment of the present disclosure, pixels P are disposed between adjacent transmissive regions TA, and pixels P may include light-emitting regions EA1, EA2, EA3, and EA4 in which light-emitting elements are configured to emit light. Since the non-transmissive regions NTA in the transparent display panel 110 are small, circuit elements can be disposed simultaneously overlapping with the light-emitting regions EA1, EA2, EA3, and EA4. That is, the light-emitting regions EA1, EA2, EA3, and EA4 may include circuit regions CA1, CA2, CA3, and CA4 in which circuit elements are disposed.

[0054] like Figure 3 As shown, in a transparent display panel 110 according to one embodiment of the present disclosure, as Figure 3 As shown, the touch sensor line TL is arranged to overlap or be adjacent to the pixel power line VDD or the common power line VSS without overlapping with the circuit regions CA1, CA2, CA3 and CA4. This reduces or minimizes the parasitic capacitance of the touch sensor line TL caused by the circuit elements and reduces or minimizes the area where the touch sensor line TL is arranged, thereby reducing the area of ​​the non-transmissive region NTA.

[0055] The first non-transmissive region NTA1 may extend in the display region DA in a first direction (or the Y-axis direction) and may include light-emitting regions EA1, EA2, EA3, and EA4, and a first signal line SL1 extending in the first direction may be disposed in the first non-transmissive region NTA1. According to one embodiment of the present disclosure, a plurality of first non-transmissive regions NTA1 may be disposed in the transparent display panel 110, and a transmissive region TA may be disposed between two adjacent first non-transmissive regions NTA1.

[0056] The first signal line SL1 may include at least one of the following: pixel power line VDD, common power line VSS, data lines DL1, DL2, DL3, DL4, reference line REF, and touch sensor line TL. Figure 3 As shown.

[0057] The pixel power line VDD can provide a first power supply to each of the sub-pixels SP1, SP2, SP3, and SP4 located in the display area DA. For example, the pixel power line VDD can provide a first power supply to each driving thin-film transistor located in the circuit regions CA1, CA2, CA3, and CA4 of each of the sub-pixels SP1, SP2, SP3, and SP4.

[0058] The common power line VSS can provide a second power supply to the cathodes (or second electrodes) of sub-pixels SP1, SP2, SP3, and SP4 located in the display area DA. In this case, the second power supply can be the common power supply normally provided to sub-pixels SP1, SP2, SP3, and SP4.

[0059] A common power line VSS can supply a second power to the cathode through a cathode contact portion CCT disposed between the common power line VSS and the touch sensor TS in the transmission region TA. A power connection line VCL can be disposed between the common power line VSS and the cathode contact portion CCT. One end of the power connection line VCL can be connected to the common power line VSS, and the other end of the power connection line VCL can be connected to the cathode contact portion CCT. For example, the power connection line VCL can extend from the common power line VSS and can be integrally formed with the cathode contact portion CCT. Furthermore, the cathode can be connected to the cathode contact portion CCT. As a result, the cathode can be electrically connected to the common power line VSS through the cathode contact portion CCT and the power connection line VCL.

[0060] Data lines DL1, DL2, DL3, and DL4 can provide data voltage to each of the sub-pixels SP1, SP2, SP3, and SP4 located in the display area DA. For example, data lines DL1, DL2, DL3, and DL4 can provide data voltage to the driving thin-film transistors located in the circuit regions CA1, CA2, CA3, and CA4 of each sub-pixel SP1, SP2, SP3, and SP4.

[0061] The reference line REF can provide an initialization voltage (or sensing voltage) to each of the sub-pixels SP1, SP2, SP3, and SP4 located in the display area DA. The reference line REF can be positioned between multiple data lines DL1, DL2, DL3, and DL4. For example, the reference line REF can be positioned at the center of the multiple data lines DL1, DL2, DL3, and DL4; that is, it can be positioned between the second data line DL2 and the third data line DL3.

[0062] At least two touch sensor lines TL can be disposed in a first non-transmissive region NTA1. When multiple touch sensor lines TL are disposed in the transmissive region TA of the transparent display panel 110, the light transmittance may be reduced due to the multiple touch sensor lines TL. Therefore, preferably, the touch sensor lines TL can be disposed in the first non-transmissive region NTA1, rather than in the transmissive region TA.

[0063] like Figure 3 As shown, the touch sensor line TL can be configured to overlap with at least one of the pixel power lines VDD and VSS in the first non-transmissive region NTA1. For example, the touch sensor line TL, pixel power line VDD, and common power line VSS can be configured in different layers. The touch sensor line TL can be configured without overlapping with circuit regions CA1, CA2, CA3, and CA4 where circuit elements are disposed, and can be configured to overlap with at least one of the pixel power lines VDD and VSS, or can be configured to be adjacent to at least one of the pixel power lines VDD and VSS. For example, multiple touch sensor lines can be configured in one first non-transmissive region NTA1. When six touch sensor lines are configured in one first non-transmissive region NTA1, three touch sensor lines can overlap with or be adjacent to the pixel power line VDD, and the other three touch sensor lines can overlap with or be adjacent to the common power line VSS, but are not limited to this structure.

[0064] In a transparent display panel 110 according to one embodiment of the present disclosure, a touch sensor TS may be disposed in a transmissive region TA. The touch sensor TS can be affected by a change in capacitance caused by a user's touch. A touch driver (not shown) is connected to the touch sensor TS via a touch sensor line TL, thereby sensing the change in capacitance in the touch sensor TS.

[0065] The touch sensor TS can be separated from the cathode of the pixel P through a disconnected portion D with an undercut region in the transmission region TA. The disconnected portion D can be formed as an edge surrounding the touch sensor TS in the transmission region TA. That is, the disconnected portion D can define the shape and area of ​​the touch sensor TS in the transmission region TA.

[0066] A touch sensor line TL can be electrically connected to a touch sensor TS via a touch sensor contact portion TCT disposed in a transmission region TA. The touch sensor contact portion TCT can be disposed within the touch sensor TS, defined by a break portion D in the transmission region TA. A touch sensor connection line TCL can be disposed between the touch sensor line TL and the touch sensor contact portion TCT. One end of the touch sensor connection line TCL extends from the touch sensor line TL, and the other end of the touch sensor connection line TCL can be electrically connected to the touch sensor contact portion TCT. For example, the touch sensor connection line TCL and the touch sensor contact portion TCT can be disposed in different layers, and at least one inorganic insulating film can be disposed between the touch sensor connection line TCL and the touch sensor contact portion TCT. A touch sensor bridge pattern TBP can be disposed between the touch sensor connection line TCL and the touch sensor contact portion TCT. The touch sensor bridge pattern TBP can be disposed at at least one inorganic insulating film between the touch sensor connection line TCL and the touch sensor contact portion TCT, and electrically connects them. Furthermore, the touch sensor TS can be connected to the touch sensor contact portion TCT. As a result, the touch sensor TS can be electrically connected to the touch sensor line TL through the touch sensor contact portion TCT, the touch sensor bridge pattern TBP, and the touch sensor connection line TCL.

[0067] The second non-transmissive region NTA2 may extend in the display region DA in a second direction (or the X-axis direction). At least a portion of the second non-transmissive region NTA2 may overlap with the light-emitting regions EA1, EA2, EA3, and EA4, and a second signal line SL2 extending in the second direction may be disposed in the second non-transmissive region NTA2. According to one embodiment of this disclosure, a plurality of second non-transmissive regions NTA2 may be disposed in the transparent display panel 110, and a transmissive region TA may be disposed between two adjacent second non-transmissive regions NTA2.

[0068] The second signal line SL2 may include the scan line SCANL, such as Figure 3 As shown. The scan line SCANL can provide scan signals to the sub-pixels SP1, SP2, SP3, and SP4 of pixel P.

[0069] In the following text, reference will be made to Figure 4 and Figure 5 The present disclosure describes in detail the connection structure between the cathode CE of pixel P and the touch sensor TS in a transparent display panel 110 according to one embodiment of the present disclosure, and the connection structure between the cathode CE of pixel P and the common power line VSS.

[0070] Figure 4 This is an example along Figure 3 A cross-sectional view of an example of I-I', and Figure 5 This is an example along Figure 3 A cross-sectional view of example II-II'.

[0071] Combination Figure 3 Reference Figure 4 and Figure 5 According to one embodiment of the present disclosure, the first substrate 111 of the transparent display panel 110 may include a non-transmissive region NTA and a transmissive region TA, wherein the non-transmissive region NTA includes a light-emitting region EA. The non-transmissive region NTA may include a first non-transmissive region NTA1 extending in a first direction (or the Y-axis direction) and a second non-transmissive region NTA2 extending in a second direction (or the X-axis direction).

[0072] The first non-transmissive region NTA1 may include circuit regions CA1, CA2, CA3, and CA4, each having at least one thin-film transistor (TFT) and a capacitor. The first non-transmissive region NTA1 may also include a pixel power line VDD, a common power line VSS, a reference line REF, a data line DL, and a touch sensor line TL, which extend in a first direction and are disposed without overlapping with the circuit regions CA1, CA2, CA3, and CA4. The second non-transmissive region NTA2 may include a scan line SCANL extending in a second direction.

[0073] At least one thin-film transistor (TFT) may include: a switching TFT switched according to a scan signal provided from a scan line SCANL and configured to charge a capacitor with a data voltage provided from a data line DL; a driving TFT switched according to the data voltage charged in the capacitor and configured to generate a data current according to a power supply provided from a pixel power line VDD, and to provide the generated data current to a first electrode 120 of sub-pixels SP1, SP2, SP3, and SP4; and a sensing TFT sensing a threshold voltage deviation of the driving TFT that causes image quality degradation based on a sensing signal. The TFT may include an active layer ACT, a gate GE, a first source / drain SD1, and a second source / drain SD2.

[0074] Specifically, the light-shielding layer LS can be disposed on the first substrate 111. The light-shielding layer LS is used to block external light incident on the active layer ACT of the thin-film transistor TFT. The light-shielding layer LS may include a single-layer structure or a multi-layer structure of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), or alloys thereof.

[0075] In a transparent display panel 110 according to one embodiment of the present disclosure, at least a portion of the pixel power line VDD, common power line VSS, reference line REF, data line DL, and touch sensor line TL can be formed in the same layer as the light-shielding layer LS. For example, as Figure 5 As shown, the touch sensor line TL and the reference line REF may include the same material as the light-shielding layer LS, and may be disposed in the same layer as the light-shielding layer LS, but are not limited thereto.

[0076] A buffer film BF can be disposed above a first substrate 111 on which a light-shielding layer LS, a touch sensor line TL, and a reference line REF are disposed. The buffer film BF is configured to prevent the thin-film transistor from being affected by moisture passing through the moisture-permeable first substrate 111. The buffer film BF may include an inorganic film, such as a silicon oxide film SiOx, a silicon nitride film SiNx, or multiple layers thereof.

[0077] The active layer ACT can be disposed on the buffer film BF. The active layer ACT can include silicon-based semiconductor materials or oxide-based semiconductor materials.

[0078] The gate insulating film GI can be disposed above the buffer film BF on which the active layer ACT is disposed. The gate insulating film GI can be disposed in the non-transmittent region NTA, and may not be disposed in at least a portion of the transmissive region TA, in order to improve the light transmittance in the transmissive region TA and form the first undercut region UC1. The gate insulating film GI may include an inorganic film, such as a silicon oxide film SiOx, a silicon nitride film SiNx, or multiple layers thereof.

[0079] The gate GE can be disposed on the gate insulating film GI. The gate GE can be formed as a single-layer or multi-layer structure of molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), copper (Cu), or alloys thereof.

[0080] In a transparent display panel 110 according to one embodiment of the present disclosure, at least a portion of the pixel power line VDD, common power line VSS, reference line REF, data line DL, and touch sensor line TL can be formed in the same layer as the gate GE. For example, as Figure 3 As shown, the scan line SCANL disposed in the second non-transmissive region NTA2 may include the same material as the gate GE, and may be disposed in the same layer as the gate GE, but is not limited thereto.

[0081] The interlayer insulating film (ILD) can be disposed above the gate insulating film (GI) on which the gate (GE) and scan line (SCANL) are disposed. The ILD can be disposed in the non-transmissive region (NTA) and may not be disposed in at least a portion of the transmissive region (TA) to improve the light transmittance in the transmissive region (TA) and form a first undercut region (UC1). The ILD can comprise an inorganic film, such as a silicon oxide film (SiOx), a silicon nitride film (SiNx), or multiples thereof.

[0082] The first source / drain SD1 and the second source / drain SD2 can be disposed on the interlayer insulating film ILD. The first source / drain SD1 and the second source / drain SD2 can be connected to the active layer ACT through contact holes CH passing through the gate insulating film GI and the interlayer insulating film ILD. The first source / drain SD1 and the second source / drain SD2 can be formed as a single-layer structure or a multi-layer structure of molybdenum Mo, aluminum Al, chromium Cr, gold Au, titanium Ti, nickel Ni, neodymium Nd, copper Cu, or alloys thereof.

[0083] In a transparent display panel 110 according to one embodiment of the present disclosure, at least a portion of the pixel power line VDD, common power line VSS, reference line REF, data line DL, and touch sensor line TL can be formed in the same layer as the first source / drain SD1 and the second source / drain SD2. For example, as Figure 5 As shown, the data line DL may include the same material as the first source / drain SD1 and the second source / drain SD2, and may be disposed in the same layer as the first source / drain SD1 and the second source / drain SD2, but is not limited thereto.

[0084] A first passivation film PAS1 for insulating a thin-film transistor (TFT) can be disposed above an interlayer insulating film ILD on which a first source / drain electrode SD1, a second source / drain electrode SD2, and a data line DL are disposed. The first passivation film PAS1 can be disposed in the non-transmitting region NTA, and may not be disposed in at least a portion of the transmissive region TA, in order to improve the light transmittance in the transmissive region TA and form a first undercut region UC1. The first passivation film PAS1 may include an inorganic film, such as a silicon oxide film SiOx, a silicon nitride film SiNx, or multiple layers thereof.

[0085] In a transparent display panel 110 according to one embodiment of the present disclosure, at least a portion of the pixel power line VDD, common power line VSS, reference line REF, data line DL, and touch sensor line TL can be formed on a first passivation film PAS1. For example, as Figure 5 As shown, the pixel power line VDD and the common power line VSS can be set on the first passivation film PAS1.

[0086] Furthermore, in a transparent display panel 110 according to one embodiment of the present disclosure, such as Figure 5 As shown, the pixel power line VDD and the common power line VSS can overlap with or be adjacent to the touch sensor line TL. Multiple touch sensor lines TL can be set in the first non-transmissive area NTA1. For example, when six touch sensor lines TL are set, the pixel power line VDD can overlap with or be adjacent to three touch sensor lines, and the common power line VSS can overlap with or be adjacent to three other touch sensor lines, but is not limited to this.

[0087] Furthermore, in a transparent display panel 110 according to one embodiment of the present disclosure, such as Figure 5 As shown, the cathode contact portion CCT and the power connection line VCL can include the same material as the pixel power line VDD and the common power line VSS, and can be disposed in the same layer as the pixel power line VDD and the common power line VSS, such as... Figure 5 As shown. One end of the power connection line VCL can be connected to the common power line VSS, and the other end of the power connection line VCL can be connected to the cathode contact portion CCT. For example, the power connection line VCL can extend from the common power line VSS and can be integrally formed with the cathode contact portion CCT. Furthermore, at least a portion of the upper surface of the cathode contact portion CCT is exposed by the second undercut region UC2, and the cathode CE can be connected to the exposed upper surface of the cathode contact portion CCT. The cathode contact portion CCT can transmit power from the common power line VSS to the cathode CE via the power connection line VCL.

[0088] The second passivation film PAS2 can be disposed above the first passivation film PAS1, on which the pixel power line VDD, common power line VSS, power connection line VCL, and cathode contact portion CCT are disposed. The second passivation film PAS2 can be disposed in the non-transmitting region NTA, and may not be disposed in at least a portion of the transmissive region TA, in order to improve the light transmittance in the transmissive region TA and form the first undercut region UC1. The second passivation film PAS2 may include an inorganic film, such as a silicon oxide film SiOx, a silicon nitride film SiNx, or multiple layers thereof. Furthermore, the second passivation film PAS2 can be formed such that at least a portion of the cathode contact portion CCT is exposed to form the second undercut region UC2.

[0089] The planarization film PLN can be disposed on the second passivation film PAS2, thereby planarizing the step difference caused by the thin-film transistor TFT and multiple signal lines. The planarization film PLN can be disposed in the non-transmissive region NTA, and may not be disposed in at least a portion of the transmissive region TA, in order to improve the light transmittance in the transmissive region TA and form the first undercut region UC1. The planarization film PLN may include an organic film, such as acrylic resin, epoxy resin, phenolic resin, polyamide resin, and polyimide resin.

[0090] In a transparent display panel 110 according to one embodiment of the present disclosure, a first undercut region UC1 can be formed using a planarization film PLN and a plurality of inorganic insulating films (e.g., gate insulating film GI, interlayer insulating film ILD, first passivation film PAS1, and second passivation film PAS2). Specifically, the first undercut region UC1 can be formed such that the planarization film PLN protrudes further than the plurality of inorganic insulating films (e.g., gate insulating film GI, interlayer insulating film ILD, first passivation film PAS1, and second passivation film PAS2) in the direction of the transmission region TA. Therefore, the first undercut region UC1 exposes at least a portion of the lower surface of the planarization film PLN, and the plurality of inorganic insulating films are not disposed below the exposed lower surface of the planarization film PLN, thereby forming a break portion D, which is the space between the buffer film BF and the exposed lower surface of the planarization film PLN. The first undercut region UC1 can be formed by a wet etching process.

[0091] The disconnected portion D, having a first undercut region UC1, can be disposed within the transmission region TA and can have a substantially planar closed-loop shape. For example, the disconnected portion D can be formed as an edge surrounding the touch sensor TS in the transmission region TA. That is, the disconnected portion D can define the shape and area of ​​the touch sensor TS in the transmission region TA.

[0092] In a transparent display panel 110 according to one embodiment of the present disclosure, the light-emitting layer 130 and the second electrode 140 can be separated between the non-transmissive region NTA and the transmissive region TA by a break portion D having a first undercut region UC1. Specifically, the light-emitting layer 130 can be divided by the break portion D into a light-emitting layer 131 disposed in the non-transmissive region NTA and a light-emitting layer 132 disposed in the transmissive region TA. Furthermore, the second electrode 140 can be divided by the break portion D into a second electrode CE disposed in the non-transmissive region NTA and a second electrode TSE disposed in the transmissive region TA. In this context, the second electrode CE disposed in the non-transmissive region NTA can be a cathode CE constituting a light-emitting element, and the second electrode TSE disposed in the transmissive region TA can be a touch sensor electrode TSE for a touch sensor TS.

[0093] In a transparent display panel 110 according to one embodiment of the present disclosure, the disconnected portion D having a first undercut region UC1 is formed by a planarization film PLN and a plurality of inorganic insulating films, such that the reduction in light transmittance can be prevented through the first undercut region UC1.

[0094] In a transparent display panel 110 according to one embodiment of the present disclosure, a second undercut region UC2 is formed using a planarization film PLN and a second passivation film PAS2. Specifically, the second undercut region UC2 can be formed such that the planarization film PLN protrudes further than the second passivation film PAS2 in the direction of the common power line VSS. Therefore, the second undercut region UC2 can expose at least a portion of the lower surface of the planarization film PLN, and the second passivation film PAS2 is not disposed below the exposed lower surface of the planarization film PLN, thereby exposing at least a portion of the upper surface of the cathode contact portion CCT. The second undercut region UC2 can be disposed outside the portion of the first undercut region UC1 formed in the transmission region TA. For example, the second undercut region UC2 can be disposed between the first undercut region UC1 and the light-emitting region EA.

[0095] In a transparent display panel 110 according to one embodiment of the present disclosure, the cathode CE can be connected to the cathode contact portion CCT via a second undercut region UC2. Specifically, at least a portion of the upper surface of the cathode contact portion CCT can be exposed via the second undercut region UC2. Since the cathode CE is in direct contact with the exposed upper surface of the cathode contact portion CCT, all cathode CEs can be connected to the cathode contact portion CCT.

[0096] The light-emitting element, including the first electrode 120, the light-emitting layer 130, and the second electrode CE, can be disposed above the planarization film PLN, and the embankment BA can be disposed above the planarization film PLN.

[0097] For each of the sub-pixels SP1, SP2, SP3, and SP4, a first electrode 120 may be disposed on the planarization film PLN. The first electrode 120 is not disposed in the transmission region TA. The first electrode 120 may be connected to the driving thin-film transistor TFT. The first electrode 120 may be connected to one of the first source / drain electrodes SD1 and the second source / drain electrode SD2 of the driving thin-film transistor TFT through contact holes (not shown) passing through the planarization film PLN and the first passivation film PAS1 and the second passivation film PAS2. For example, the first electrode 120 may comprise a metallic material with high reflectivity, such as a stacked structure of aluminum and titanium (Ti / Al / Ti), a stacked structure of aluminum and ITO (ITO / Al / ITO), an Ag alloy, a stacked structure of Ag alloy and ITO (ITO / Ag alloy / ITO), a MoTi alloy, and a stacked structure of MoTi alloy and ITO (ITO / MOTI alloy / ITO alloy). The Ag alloy may be an alloy of silver (Ag), palladium (PD), and copper (Cu). The MoTi alloy may be an alloy of molybdenum (Mo) and titanium (Ti). The first electrode 120 can be the anode.

[0098] The dam BA can be disposed above the planarization film PLN. Furthermore, the dam BA can be formed to cover the edge of the first electrode 120 and expose a portion of the first electrode 120. Therefore, the dam BA prevents current concentration at the end of the first electrode 120, thereby preventing a decrease in luminous efficiency.

[0099] The dam BA can define the light-emitting regions EA1, EA2, EA3, and EA4 of each sub-pixel SP1, SP2, SP3, and SP4. The light-emitting regions EA1, EA2, EA3, and EA4 of each sub-pixel SP1, SP2, SP3, and SP4 can correspond to the regions used for light emission, wherein the first electrode 120, the light-emitting layer 130, and the cathode CE are sequentially stacked, and holes from the first electrode 120 and electrons from the cathode CE are coupled to each other in the light-emitting layer 130. In this case, the region forming the dam BA does not emit light, and therefore becomes the non-light-emitting region NEA. Furthermore, the region where the dam BA is not formed and the first electrode 120 is exposed can be the light-emitting region EA. For example, the dam 125 can comprise an organic film of acrylic resin, epoxy resin, phenolic resin, polyamide resin, or polyimide resin.

[0100] The light-emitting layer 130 can be disposed on the first electrode 120. For example, the light-emitting layer 130 can be a common layer formed together on sub-pixels SP1, SP2, SP3, and SP4. In this embodiment, the light-emitting layer 130 can be a white light-emitting layer for emitting white light. As another example, the light-emitting layer 130 can be formed by each of the sub-pixels SP1, SP2, SP3, and SP4. For example, a green light-emitting layer for emitting green light is formed in the first sub-pixel SP1, a red light-emitting layer for emitting red light is formed in the second sub-pixel SP2, a blue light-emitting layer for emitting blue light is formed in the third sub-pixel SP3, and a white light-emitting layer for emitting white light is formed in the fourth sub-pixel SP4. In this case, the light-emitting layer 130 may not be formed in the transmission region TA.

[0101] The light-emitting layer 130 can be separated between the non-transmissive region NTA and the transmissive region TA through a break portion D having a first undercut region UC1. That is, the light-emitting layer 130 can be divided by the first undercut region UC1 into a light-emitting layer 131 disposed in the non-transmissive region NTA and a light-emitting layer 132 disposed in the transmissive region TA.

[0102] The second electrode 140 can be disposed on the light-emitting layer 130 and the embankment 125. If the second electrode 140 is deposited over the entire surface, the second electrode 140 can be disposed discontinuously between the non-transmissive region NTA and the transmissive region TA through the first undercut region UC1. In particular, the second electrode 140 can be divided by the first undercut region UC1 into a second electrode CE disposed in the non-transmissive region NTA and a second electrode TSE disposed in the transmissive region TA.

[0103] In this configuration, the second electrode CE disposed in the non-transmissive region NTA can be the cathode CE of the light-emitting element. The cathode CE is connected to the cathode contact portion CCT exposed by the second undercut region UC2, thereby allowing the cathode CE to receive power from the common power line VSS. The cathode CE can be a common layer formed together on sub-pixels SP1, SP2, SP3, and SP4, and is configured to apply the same voltage to sub-pixels SP1, SP2, SP3, and SP4.

[0104] Furthermore, the second electrode TSE disposed in the transmission region TA can be the touch sensor electrode TSE for the touch sensor TS. The touch sensor electrode TSE can be connected to the touch sensor line TL via the touch sensor contact portion TCT disposed in the transmission region TA, thereby providing capacitance variation.

[0105] The second electrode 140, which includes the cathode (CE) and the touch sensor electrode (TSE), may include a transparent conductive material (TCO) such as ITO or IZO, or a semi-transparent conductive material such as magnesium (Mg), silver (Ag), or an alloy of magnesium (Mg) and silver (Ag). When the second electrode 140 includes a semi-transparent conductive material, the luminous efficiency can be improved through a microcavity.

[0106] The encapsulation film 150 can be formed above the light-emitting element and the touch sensor TS. The encapsulation film 150 can be disposed on the cathode CE and the touch sensor electrode TSE while being configured to cover the cathode CE and the touch sensor electrode TSE.

[0107] The encapsulation film 150 prevents oxygen or moisture from penetrating the light-emitting layer 130, the cathode CE, and the touch sensor electrode TSE. For this purpose, the encapsulation film 150 may include at least one inorganic film and at least one organic film.

[0108] The color filter CF can be disposed above the encapsulation film 150. The color filter CF can also be disposed on a surface of the second substrate 112 facing the first substrate 111. In this case, the first substrate 111 on which the encapsulation film 150 is disposed and the second substrate 112 on which the color filter CF is disposed can be bonded to each other via a separate adhesive layer 160. The adhesive layer 160 can be an optically transparent resin layer (OCR) or an optically transparent adhesive film (OCA).

[0109] The color filter CF can be patterned through each of the sub-pixels SP1, SP2, SP3, and SP4. Specifically, the color filter CF can include a first color filter, a second color filter, and a third color filter. The first color filter can be configured to correspond to the emitting area EA1 of the first sub-pixel SP1 and can be a green color filter that transmits green light. The second color filter can be configured to correspond to the emitting area EA2 of the second sub-pixel SP2 and can be a red color filter that transmits red light. The third color filter can be configured to correspond to the emitting area EA3 of the third sub-pixel SP3 and can be a blue color filter that transmits blue light.

[0110] A black matrix (BM) can be placed between each color filter in a color filter (CF). A black matrix (BM) can also be placed between each of the sub-pixels SP1, SP2, SP3, and SP4, thereby preventing color mixing between adjacent sub-pixels SP1, SP2, SP3, and SP4. Additionally, the black matrix (BM) prevents externally incident light from being reflected onto the multiple traces (e.g., scan lines, data lines, pixel power lines, common power lines, reference lines, etc.) placed between each of the sub-pixels SP1, SP2, SP3, and SP4.

[0111] In a transparent display panel 110 according to one embodiment of the present disclosure, the touch sensor electrode TSE of the touch sensor TS and the cathode CE of the light-emitting element can be formed in the same layer using a first undercut region UC1. The transparent display panel 110 according to one embodiment of the present disclosure achieves a simple touch process and does not require a separate mask for the touch sensor electrode TSE.

[0112] Furthermore, in a transparent display panel 110 according to one embodiment of the present disclosure, the first undercut region UC1 is formed by a planarization film PLN and a plurality of inorganic insulating films, such that the first undercut region UC1 can be formed without loss of light transmittance.

[0113] In addition, in a transparent display panel 110 according to one embodiment of the present disclosure, a touch sensor line TL is disposed below the light-emitting element, thereby preventing the light-emitting efficiency of pixel P from being degraded by the touch sensor line TL.

[0114] Furthermore, in a transparent display panel 110 according to one embodiment of the present disclosure, the touch sensor line TL is disposed overlapping with or adjacent to the pixel power line VDD and the common power line VSS without overlapping with the circuit regions CA1, CA2, CA3 and CA4. This allows the parasitic capacitance of the touch sensor line TL caused by the circuit elements to be reduced or minimized, and the area of ​​the non-transmissive region NTA is reduced or minimized by reducing or minimizing the area where the touch sensor line TL is disposed.

[0115] In the following text, reference will be made to Figures 6A to 10C The present disclosure describes in detail the connection structure of the touch sensor TS and touch sensor line TL in the transparent display panel 110 according to an embodiment of the present disclosure, through the touch sensor contact portion TCT.

[0116] First Implementation Method

[0117] Figure 6A Examples include Figure 3 A plan view of the touch sensor contact portion in region C of the first embodiment. Figure 6B This is an example along Figure 6A A cross-sectional view of example III-III', and Figure 6C This is an example along Figure 6A A cross-sectional view of an example of IV-IV'.

[0118] Combination Figures 3 to 5 Reference Figures 6A to 6CThe transparent display panel 110 according to the first embodiment of this disclosure may include a touch sensor line TL, a touch sensor connection line TCL, a touch sensor contact portion TCT, a touch sensor bridge pattern TBP, a plurality of support pattern films 210, 220 and 230, an eaves pattern portion 310, an eaves support portion 320 and a protective pattern film 330. The eaves pattern portion 310 and the eaves support portion 320 may be collectively referred to as the "contact structure".

[0119] In the non-transmissive region NTA, such as Figures 3 to 5 As shown, the touch sensor line TL can be disposed on the first substrate 111, and can be disposed simultaneously overlapping with at least one of the pixel power line VDD and the common power line VSS. For example, the touch sensor line TL can include the same material as the light-shielding layer LS, and can be disposed in the same layer as the light-shielding layer LS, but is not limited thereto.

[0120] A touch sensor connection line (TCL) can be disposed on the first substrate 111. One end of the touch sensor connection line (TCL) is connected to the touch sensor line (TL), and the other end of the touch sensor connection line (TCL) extends in the direction in which the touch sensor contact portion (TCT) is disposed and overlaps with the touch sensor contact portion (TCT) (e.g., TCT'). For example, the touch sensor connection line (TCL) can extend from the touch sensor line (TL) as an integral type and can be formed in the portion overlapping with the touch sensor contact portion (TCT). For example, the touch sensor connection line (TCL) can include the same material as the light-shielding layer (LS) and can be disposed in the same layer as the light-shielding layer (LS), but is not limited thereto.

[0121] The buffer film BF can be disposed above the first substrate 111 on which the touch sensor line TL and the touch sensor connection line TCL are disposed.

[0122] The touch sensor contact portion TCT can be disposed within the touch sensor TS defined by the break portion D in the transmissive region TA. The touch sensor contact portion TCT can be disposed above multiple support pattern films 210, 220, and 230 overlapping with the touch sensor contact portion TCT in the transmissive region TA. For example, the touch sensor contact portion TCT can include the same material as the pixel power line VDD and the common power line VSS, and can be disposed in the same layer as the pixel power line VDD and the common power line VSS, but is not limited thereto.

[0123] A touch sensor bridge pattern TBP can be disposed between the touch sensor contact portion TCT and the touch sensor connection line TCL. One end of the touch sensor bridge pattern TBP can overlap with the touch sensor connection line TCL, and the other end of the touch sensor bridge pattern TBP can overlap with the touch sensor contact portion TCT. The touch sensor bridge pattern TBP can be disposed on one of the multiple support pattern films 210, 220, and 230, and can electrically connect the touch sensor connection line TCL and the touch sensor contact portion TCT to each other. One end of the touch sensor bridge pattern TBP can be electrically connected to the touch sensor connection line TCL, and the other end of the touch sensor bridge pattern TBP can be electrically connected to the touch sensor contact portion TCT. For example, the touch sensor bridge pattern TBP can include the same material as the first source / drain SD1 and the second source / drain SD2, and can be disposed in the same layer as the first source / drain SD1 and the second source / drain SD2, but is not limited thereto.

[0124] The plurality of support pattern films 210, 220, and 230 may comprise inorganic materials. The plurality of support pattern films 210, 220, and 230 may be disposed above the buffer film BF of the first substrate 111. The plurality of support pattern films 210, 220, and 230 may be disposed in portions of the transmissive region TA that at least partially overlap with the touch sensor contact portion TCT.

[0125] The first support pattern film 210 of the plurality of support pattern films 210, 220 and 230 may be disposed on the upper surface of the touch sensor connection line TCL buffer film BF disposed thereon. At least a portion of the first support pattern film 210 may overlap with the touch sensor contact portion TCT in the transmissive region TA, and the first support pattern film 210 may not be disposed in at least a portion of the transmissive region TA to improve the light transmittance in the transmissive region TA. For example, the first support pattern film 210 may include the same material as the gate insulating film GI disposed in the non-transmissive region NTA, and may be disposed in the same layer as the gate insulating film GI, but is not limited thereto.

[0126] A second support pattern film 220, one of the plurality of support pattern films 210, 220, and 230, may be disposed on the upper surface of the first support pattern film 210. At least a portion of the second support pattern film 220 may overlap with the touch sensor contact portion TCT in the transmissive region TA, and the second support pattern film 220 may not be disposed in at least a portion of the transmissive region TA to improve the light transmittance in the transmissive region TA. For example, the second support pattern film 220 may comprise the same material as the interlayer insulating film ILD disposed in the non-transmissive region NTA, and may be disposed in the same layer as the interlayer insulating film ILD, but is not limited thereto. A touch sensor bridge pattern TBP may be disposed on the second support pattern film 220. The touch sensor bridge pattern TBP may be connected to the touch sensor connection line TCL through a first contact hole CH1 passing through the first support pattern film 210, the second support pattern film 220, and the buffer film BF.

[0127] A third support pattern film 230, one of the plurality of support pattern films 210, 220, and 230, may be disposed on the upper surface of a second support pattern film 220 in which a touch sensor bridge pattern TBP is disposed. At least a portion of the third support pattern film 230 may overlap with the touch sensor contact portion TCT in the transmissive region TA, and the third support pattern film 230 may not be disposed in at least a portion of the transmissive region TA to improve light transmittance in the transmissive region TA. For example, the third support pattern film 230 may comprise the same material as the first passivation film PAS1 disposed in the non-transmissive region NTA, and may be disposed in the same layer as the first passivation film PAS1, but is not limited thereto. The touch sensor contact portion TCT may be disposed on the third support pattern film 230. The touch sensor contact portion TCT may be connected to the touch sensor bridge pattern TBP through a second contact hole CH2 passing through the third support pattern film 230.

[0128] Reference Figures 6A to 6C According to the first embodiment of the present disclosure, the touch sensor contact portion TCT (or touch sensor contact electrode) of the transparent display panel 110 can be disposed above a plurality of support pattern films 210, 220 and 230. Above the touch sensor contact portion TCT, an overhang pattern portion 310, an overhang support portion 320 and a protective pattern film 330 can be disposed to form an undercut region UC3 that exposes at least a portion of the touch sensor contact portion TCT.

[0129] The eaves pattern portion 310 may include an organic insulating material, and the eaves support portion 320 and the protective pattern film 330 may be formed of an inorganic insulating material. The eaves pattern portion 310 may include the same material as the planarization film PLN disposed in the non-transmissive region NTA, and may be disposed in the same layer as the planarization film PLN disposed in the non-transmissive region NTA. Furthermore, the eaves support portion 320 and the protective pattern film 330 may include the same material as the second passivation film PAS2 disposed in the non-transmissive region NTA, and may be disposed in the same layer as the second passivation film PAS2 disposed in the non-transmissive region NTA, but are not limited thereto.

[0130] The ridge pattern portion 310 may be disposed above a portion of the touch sensor contact portion TCT. The ridge pattern portion 310 is formed as an island-shaped pattern above the center of the touch sensor contact portion TCT, and the undercut region UC3 may be formed below a portion of the edge of the ridge pattern portion 310. For example, the undercut region UC3 may only be formed below the edge located at the upper part of the entire edge portion of the ridge pattern portion 310, and the undercut region UC3 may not be formed on the remaining edge portion.

[0131] The ridge support portion 320 overlaps with the ridge pattern portion 310 above the upper surface of the touch sensor contact portion TCT and is configured to support the ridge pattern portion 310. Furthermore, the protective pattern film 330 may be formed to cover the edge of the touch sensor contact portion TCT. An exposure area for exposing at least a portion of the touch sensor contact portion TCT may be formed between the ridge support portion 320 and the protective pattern film 330. The undercut region UC3 may at least partially overlap with the exposure area of ​​the touch sensor contact portion TCT.

[0132] The eaves support portion 320 and the protective pattern film 330 may comprise the same material as the second passivation film PAS2 disposed in the non-transmissive region NTA, and may be disposed in the same layer as the second passivation film PAS2 disposed in the non-transmissive region NTA. For example, the eaves support portion 320 and the protective pattern film 330 may be formed from the same material as the second passivation film PAS2 by a wet etching process, and the protective pattern film 330 may be formed at a height lower than or equal to the height of the eaves support portion 320.

[0133] The ridge support portion 320 and the protective pattern film 330 can be formed by a wet etching process for the area overlapping a portion of the edge of the ridge pattern portion 310. The ridge support portion 320 is etched to expose a portion of the upper surface of the touch sensor contact portion TCT. The ridge support portion 320 is arranged such that in the area overlapping a portion of the edge of the ridge pattern portion 310, the ridge support portion 320 is recessed inward compared to the ridge pattern portion 310. Therefore, the protective pattern film 330 is not completely etched and is patterned to cover the edge of the touch sensor contact portion TCT.

[0134] In the transparent display panel 110 according to the first embodiment of this disclosure, such as Figures 6A to 6C As shown, at least a portion of the upper surface of the touch sensor contact portion TCT is exposed by the undercut region UC3, and the touch sensor electrode TSE contacts the exposed upper surface of the touch sensor contact portion TCT.

[0135] The touch sensor contact portion TCT can overlap with the touch sensor bridge pattern TBP and can be connected to the touch sensor bridge pattern TBP through the second contact hole CH2 passing through the third support pattern film 230. Furthermore, the touch sensor bridge pattern TBP can overlap with the touch sensor connection line TCL and can be connected to the touch sensor connection line TCL through the first contact hole CH1 passing through the first support pattern film 210, the second support pattern film 220, and the buffer film BF. As a result, the touch sensor electrode TSE directly contacts the upper surface of the touch sensor contact portion TCT through the undercut region UC3, thereby connecting the touch sensor electrode TSE to the touch sensor contact portion TCT and being configured to transmit the capacitance change of the touch sensor electrode TSE to the touch sensor line TCL through the touch sensor bridge pattern TBP and the touch sensor connection line TCL.

[0136] In the transparent display panel 110 according to the first embodiment of this disclosure, such as Figures 6A to 6C As shown, the undercut region UC3 can be formed below a portion of the edge of the eaves pattern portion 310. The undercut region UC3 can be formed such that the eaves support portion 320 corresponding to a portion of the edge of the eaves pattern portion 310 is patterned more inwardly than the edge of the eaves pattern portion 310. The undercut region UC3 can include a portion below a portion of the edge of the eaves pattern portion 310 and the side surface of the eaves support portion 320. An exposure area for exposing at least a portion of the touch sensor contact portion TCT can be formed between the eaves support portion 320 having the undercut region UC3 and the protective pattern film 330. The exposure area of ​​the touch sensor contact portion TCT can be formed in the periphery of a portion of the edge of the eaves pattern portion 310, corresponding to the formation position of the undercut region UC3.

[0137] The light-emitting layer 132 can be formed on the ridge pattern portion 310 and the protective pattern film 330, and can be disposed discontinuously in the undercut region UC3, which is formed below a portion of the edge of the ridge pattern portion 310 disposed above the exposed area of ​​the touch sensor contact portion TCT. The light-emitting layer 132 may include a material with poor step coverage. Therefore, the light-emitting layer 132 may not be formed in the exposed area of ​​the touch sensor contact portion TCT that overlaps with the undercut region UC3, thereby reducing or minimizing the area of ​​the light-emitting layer 132 disposed above the exposed area of ​​the touch sensor contact portion TCT.

[0138] The touch sensor electrode TSE can be formed above the overhang pattern portion 310 and the protective pattern film 330, and can contact the exposed area of ​​the touch sensor contact portion TCT, thereby electrically connecting the touch sensor electrode TSE to the touch sensor contact portion TCT. The touch sensor electrode TSE can comprise the same material as the cathode CE with excellent step coverage. The touch sensor electrode TSE has a larger step coverage than the light-emitting layer 132, so that the light-emitting layer 132 can be omitted, and the touch sensor electrode TSE can be formed on the exposed upper surface of the touch sensor contact portion TCT. Therefore, the light-emitting layer 132 does not contact the touch sensor contact portion TCT overlapping with the undercut region UC3, and the touch sensor contact portion TCT is exposed. However, the touch sensor electrode TSE is not covered by the light-emitting layer 132, and directly contacts the exposed upper surface of the touch sensor contact portion TCT, and is electrically connected to the touch sensor contact portion TCT.

[0139] Second Implementation Method

[0140] Figure 7A Examples include Figure 3 A plan view of the second embodiment of the touch sensor contact portion in region C, and Figure 7B This is an example along Figure 7A A cross-sectional view of an example of V-V'. Figure 7A Cross-sectional view along III-III' and Figure 6B The cross-sectional views are basically the same as those in the previous section, so a detailed description of the cross-sectional views along III-III' is omitted.

[0141] Combination Figures 3 to 5 and Figure 6B Reference Figure 7A and Figure 7BAccording to the second embodiment of the present disclosure, the transparent display panel 110 may include a touch sensor line TL, a touch sensor connection line TCL, a touch sensor contact portion TCT, a touch sensor bridge pattern TBP, a plurality of support pattern films 210, 220 and 230, an eaves pattern portion 310, an eaves support portion 320 and a protective pattern film 330.

[0142] Except for the undercut area UC3 forming a closed loop shape along the edge of the eaves pattern portion 310, Figure 7A and Figure 7B The transparent display panel 110 according to the second embodiment of the present disclosure shown has a... Figures 6A to 6C The transparent display panel 110 shown in the first embodiment of this disclosure has a substantially the same structure, and therefore a detailed description of the same structure will be omitted.

[0143] Reference Figure 7A and Figure 7B According to the second embodiment of the present disclosure, the touch sensor contact portion TCT (or touch sensor contact electrode) of the transparent display panel 110 can be disposed above a plurality of support pattern films 210, 220 and 230. Above the touch sensor contact portion TCT, the ridge pattern portion 310, the ridge support portion 320 and the protective pattern film 330 can be configured to form an undercut region UC3 that exposes at least a portion of the touch sensor contact portion TCT.

[0144] The overhang pattern portion 310 may be disposed above a portion of the touch sensor contact portion TCT. The overhang pattern portion 310 is formed as an island-shaped pattern above the center of the touch sensor contact portion TCT, and the undercut region UC3 may be formed below the edge of the overhang pattern portion 310. For example, the undercut region UC3, which is formed in a closed loop shape, may be formed along the entire edge of the overhang pattern portion 310.

[0145] The ridge support portion 320 overlaps with the ridge pattern portion 310 above the upper surface of the touch sensor contact portion TCT and is configured to support the ridge pattern portion 310. Furthermore, the protective pattern film 330 may be formed to cover the edge of the touch sensor contact portion TCT. An exposure area for exposing at least a portion of the touch sensor contact portion TCT may be formed between the ridge support portion 320 and the protective pattern film 330. The undercut region UC3 may at least partially overlap with the exposure area of ​​the touch sensor contact portion TCT.

[0146] The ridge support portion 320 and the protective pattern film 330 can be formed by a wet etching process for the area overlapping the edge of the ridge pattern portion 310. The ridge support portion 320 is etched to expose a portion of the upper surface of the touch sensor contact portion TCT. The ridge support portion 320 is arranged such that in the area overlapping the edge of the ridge pattern portion 310, the ridge support portion 320 is recessed inward compared to the ridge pattern portion 310. Therefore, the protective pattern film 330 is not completely etched and is patterned to cover the edge of the touch sensor contact portion TCT.

[0147] In the transparent display panel 110 according to the second embodiment of this disclosure, such as Figure 7A and Figure 7B As shown, an undercut region UC3 with a closed-loop shape can be formed below the edge of the eaves pattern portion 310. The undercut region UC3 can be formed such that the eaves support portion 320 corresponding to the edge of the eaves pattern portion 310 is patterned more inwardly than the edge of the eaves pattern portion 310. The undercut region UC3 can include a portion below the edge of the eaves pattern portion 310 and the side surface of the eaves support portion 320. An exposure area for exposing at least a portion of the touch sensor contact portion TCT can be formed between the eaves support portion 320 with the undercut region UC3 and the protective pattern film 330. The exposure area of ​​the touch sensor contact portion TCT can be formed in a closed-loop shape along the periphery of the edge of the eaves pattern portion 310, corresponding to the formation position of the undercut region UC3.

[0148] The light-emitting layer 132 can be formed above the ridge pattern portion 310 and the protective pattern film 330, and can be disposed disconnectedly in the undercut region UC3, which is formed below the edge of the ridge pattern portion 310 disposed above the exposed area of ​​the touch sensor contact portion TCT. The light-emitting layer 132 may not be formed in the exposed area of ​​the touch sensor contact portion TCT that overlaps with the undercut region UC3, thereby reducing or minimizing the area of ​​the light-emitting layer 132 disposed above the exposed area of ​​the touch sensor contact portion TCT.

[0149] The touch sensor electrode TSE can be formed above the overhang pattern portion 310 and the protective pattern film 330, and can contact the exposed area of ​​the touch sensor contact portion TCT, thereby allowing the touch sensor electrode TSE to be electrically connected to the touch sensor contact portion TCT. The light-emitting layer 132 does not contact the touch sensor contact portion TCT that overlaps with the undercut region UC3, and the touch sensor contact portion TCT is exposed. However, the touch sensor electrode TSE is not covered by the light-emitting layer 132, and directly contacts the exposed upper surface of the touch sensor contact portion TCT, and is electrically connected to the touch sensor contact portion TCT.

[0150] The light-emitting layer 132 and the touch sensor electrode TSE formed on the upper surface of the overhang pattern portion 310 can be disposed disconnected along the edge of the undercut region UC3 in which the overhang pattern portion 310 is formed. In this case, the light-emitting layer 132 and the touch sensor electrode TSE above the overhang pattern portion 310 can be electrically separated from the touch sensor TS.

[0151] In the transparent display panel 110 according to the second embodiment of this disclosure, the contact area of ​​the touch sensor contact portion TCT is formed into a closed-loop shape corresponding to the shape of the undercut region UC3. This increases the contact area between the touch sensor electrode TSE and the touch sensor contact portion TCT, and reduces the resistance between the touch sensor electrode TSE and the touch sensor contact portion TCT, thereby improving the reliability of the contact area and reducing the resistance deviation in the entire touch sensor electrode TSE. Therefore, in the step of detecting defects in the manufacturing process of the transparent display panel 110, the resulting false detections can be reduced or minimized by reducing the resistance deviation of the touch sensor, thereby improving the accuracy of defect detection.

[0152] Third Implementation Method

[0153] Figure 8A Examples include Figure 3 A plan view of the third embodiment of the touch sensor contact portion in region C, and Figure 8B This is an example along Figure 8A A cross-sectional view of an example of VI-VI'. Figure 8A Cross-sectional view along IV-IV' and Figure 6C The cross-sectional views are basically the same as those in the previous section, thus omitting a detailed description of the cross-sectional views along IV-IV'.

[0154] Combination Figures 3 to 5 and Figure 6C Reference Figure 8A and Figure 8B According to the third embodiment of the present disclosure, the transparent display panel 110 may include a touch sensor line TL, a touch sensor connection line TCL, a touch sensor contact portion TCT, a touch sensor bridge pattern TBP, a plurality of support pattern films 210, 220 and 230, a first eaves pattern portion 311, a second eaves pattern portion 312, a first eaves support portion 321, a second eaves support portion 322 and a protective pattern film 330.

[0155] Apart from the eaves pattern portion which is divided into the first eaves pattern portion 311 and the second eaves pattern portion 312, Figure 8A and Figure 8B The transparent display panel 110 shown according to the third embodiment of this disclosure has a... Figures 6A to 6CThe structure of the transparent display panel 110 according to the first embodiment of this disclosure is shown below. Figure 7A and Figure 7B The transparent display panel 110 shown in the second embodiment of this disclosure has a substantially the same structure, and therefore a detailed description of the same structure will be omitted.

[0156] Reference Figure 8A and Figure 8B According to the third embodiment of this disclosure, the touch sensor contact portion TCT (or touch sensor contact electrode) of the transparent display panel 110 can be disposed above a plurality of support pattern films 210, 220, and 230. Above the touch sensor contact portion TCT, the first eaves pattern portion 311, the second eaves pattern portion 312, the first eaves support portion 321, the second eaves support portion 322, and the protective pattern film 330 can be configured to form an undercut region UC3 that exposes at least a portion of the touch sensor contact portion TCT.

[0157] The first eaves pattern portion 311 and the second eaves pattern portion 312 may be disposed above a portion of the touch sensor contact portion TCT. The first eaves pattern portion 311 and the second eaves pattern portion 312 may be spaced apart from each other and may be disposed parallel to each other above the center of the touch sensor contact portion TCT. Each eaves pattern portion of the first eaves pattern portion 311 and the second eaves pattern portion 312 is formed as an island-shaped pattern, and an undercut region UC3 may be formed below a portion of the edge of the first eaves pattern portion 311 and the second eaves pattern portion 312. For example, the undercut region UC3 may be formed only below the edge of the upper part of the entire edge portion of the first eaves pattern portion 311, the undercut region UC3 may be formed only below the edge of the upper part of the entire edge portion of the second eaves pattern portion 312, and the undercut region UC3 may not be formed on the remaining edge portion.

[0158] The first eaves support portion 321 overlaps with the first eaves pattern portion 311 above the upper surface of the touch sensor contact portion TCT and is configured to support the first eaves pattern portion 311. The second eaves support portion 322 overlaps with the second eaves pattern portion 312 above the upper surface of the touch sensor contact portion TCT and is configured to support the second eaves pattern portion 312. Furthermore, the protective pattern film 330 may be formed to cover the edge of the touch sensor contact portion TCT. An exposure area for exposing at least a portion of the touch sensor contact portion TCT may be formed between the first eaves support portion 321, the second eaves support portion 322, and the protective pattern film 330. The undercut region UC3 may at least partially overlap with the exposure area of ​​the touch sensor contact portion TCT.

[0159] The first eaves support portion 321 and the second eaves support portion 322, as well as the protective pattern film 330, can be formed by a wet etching process for the area overlapping a portion of the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312. The first eaves support portion 321 and the second eaves support portion 322 are etched to expose a portion of the upper surface of the touch sensor contact portion TCT. The first eaves support portion 321 and the second eaves support portion 322 are arranged such that, in the area overlapping a portion of the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312, the first eaves support portion 321 and the second eaves support portion 322 are recessed inward compared to the first eaves pattern portion 311 and the second eaves pattern portion 312. The protective pattern film 330 is not completely etched and is patterned to cover the edges of the touch sensor contact portion TCT.

[0160] In the transparent display panel 110 according to the third embodiment of this disclosure, such as Figure 8A and Figure 8B As shown, the undercut region UC3 can be formed below a portion of the edge of the first eaves pattern portion 311 and the second eaves pattern portion 312. The undercut region UC3 can be formed such that the first eaves support portion 321 and the second eaves support portion 322, corresponding to a portion of the edge of the first eaves pattern portion 311 and the second eaves pattern portion 312, are patterned more inwardly than the edge of the first eaves pattern portion 311 and the second eaves pattern portion 312. The undercut region UC3 can include the portion below a portion of the edge of the first eaves pattern portion 311 and the second eaves pattern portion 312 and the side surfaces of the first eaves support portion 321 and the second eaves support portion 322. An exposure area for exposing at least a portion of the touch sensor contact portion TCT can be formed between the first eaves support portion 321 and the second eaves support portion 322 having the undercut region UC3 and the protective pattern film 330. The exposure area of ​​the touch sensor contact portion TCT can be formed simultaneously in the periphery of a portion of the edge of the first eaves pattern portion 311 and the second eaves pattern portion 312, corresponding to the formation position of the undercut region UC3.

[0161] The light-emitting layer 132 can be formed on the first eaves pattern portion 311, the second eaves pattern portion 312, and the protective pattern film 330, and can be discontinuously disposed in the undercut region UC3, which is formed below a portion of the edge of the first eaves pattern portion 311 and the second eaves pattern portion 312 disposed above the exposed area of ​​the touch sensor contact portion TCT. Therefore, the light-emitting layer 132 may not be formed in the exposed area of ​​the touch sensor contact portion TCT that overlaps with the undercut region UC3, thereby reducing or minimizing the area of ​​the light-emitting layer 132 disposed on the exposed area of ​​the touch sensor contact portion TCT.

[0162] The touch sensor electrode TSE can be formed over the first eaves pattern portion 311, the second eaves pattern portion 312, and the protective pattern film 330, and can contact the exposed area of ​​the touch sensor contact portion TCT, thereby allowing the touch sensor electrode TSE to be electrically connected to the touch sensor contact portion TCT. The light-emitting layer 132 does not contact the touch sensor contact portion TCT that overlaps with the undercut region UC3, and the touch sensor contact portion TCT is exposed. However, the touch sensor electrode TSE is not covered by the light-emitting layer 132 and directly contacts the exposed upper surface of the touch sensor contact portion TCT, and is electrically connected to the touch sensor contact portion TCT.

[0163] In the transparent display panel 110 according to the third embodiment of this disclosure, the contact area of ​​the touch sensor contact portion TCT is formed into an uneven shape corresponding to the shape of the undercut region UC3 by means of the first eave pattern portion 311 and the second eave pattern portion 312, which are separated from each other and arranged parallel to each other. This increases the contact area between the touch sensor electrode TSE and the touch sensor contact portion TCT and reduces the resistance between the touch sensor electrode TSE and the touch sensor contact portion TCT, thereby improving the reliability of the contact area and reducing the resistance deviation in the entire touch sensor electrode TSE. Therefore, in the step of detecting defects in the manufacturing process of the transparent display panel 110, the resulting false detections can be reduced or minimized by reducing the resistance deviation of the touch sensor, thereby improving the accuracy of defect detection.

[0164] Fourth Implementation Method

[0165] Figure 9 Examples include Figure 3 A plan view of the fourth embodiment of the touch sensor contact portion in region C. Figure 9 Cross-sectional view along V-V' and Figure 7B The cross-sectional views are basically the same, and the cross-sectional views along VI-VI' are the same. Figure 8B The cross-sectional views are basically the same, thus omitting a detailed description of the cross-sectional views along V-V' and VI-VI'.

[0166] Combination Figures 3 to 5 as well as Figure 7B and Figure 8B Reference Figure 9The transparent display panel 110 according to the fourth embodiment of the present disclosure may include a touch sensor line TL, a touch sensor connection line TCL, a touch sensor contact portion TCT, a touch sensor bridge pattern TBP, a plurality of support pattern films 210, 220 and 230, a first eaves pattern portion 311, a second eaves pattern portion 312, a first eaves support portion 321, a second eaves support portion 322 and a protective pattern film 330.

[0167] In addition to the fact that the eaves pattern portion is divided into a first eaves pattern portion 311 and a second eaves pattern portion 312 that are spaced apart from each other and arranged parallel to each other, and that the undercut region is arranged in a grid shape along the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312, Figure 9 The transparent display panel 110 according to the fourth embodiment of this disclosure shown has a... Figures 6A to 6C The transparent display panel 110 according to the first embodiment of this disclosure is shown in the diagram. Figure 7A and Figure 7B The structure of the transparent display panel 110 according to the second embodiment of this disclosure is shown below. Figure 8A and Figure 8B The transparent display panel 110 shown according to the third embodiment of this disclosure has a substantially the same structure, and therefore a detailed description of the same structure will be omitted.

[0168] Reference Figure 9 According to the fourth embodiment of this disclosure, the touch sensor contact portion TCT (or touch sensor contact electrode) of the transparent display panel 110 can be disposed above a plurality of support pattern films 210, 220, and 230. Above the touch sensor contact portion TCT, a first eaves pattern portion 311, a second eaves pattern portion 312, a first eaves support portion 321, a second eaves support portion 322, and a protective pattern film 330 can be configured to form an undercut region UC3 that exposes at least a portion of the touch sensor contact portion TCT.

[0169] The first eaves pattern portion 311 and the second eaves pattern portion 312 may be disposed above a portion of the touch sensor contact portion TCT. The first eaves pattern portion 311 and the second eaves pattern portion 312 may be spaced apart from each other and may be disposed parallel to each other above the center of the touch sensor contact portion TCT. Each eaves pattern portion of the first eaves pattern portion 311 and the second eaves pattern portion 312 is formed as an island-shaped pattern, and an undercut region UC3 may be formed below the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312. For example, the undercut region UC3 may be formed as a grid shape along the entire edge of the first eaves pattern portion 311 and the second eaves pattern portion 312.

[0170] The first eaves support portion 321 overlaps with the first eaves pattern portion 311 above the upper surface of the touch sensor contact portion TCT and is configured to support the first eaves pattern portion 311. The second eaves support portion 322 overlaps with the second eaves pattern portion 312 above the upper surface of the touch sensor contact portion TCT and is configured to support the second eaves pattern portion 312. Furthermore, the protective pattern film 330 may be formed to cover the edge of the touch sensor contact portion TCT. An exposure area for exposing at least a portion of the touch sensor contact portion TCT may be formed between the first eaves support portion 321, the second eaves support portion 322, and the protective pattern film 330. The undercut region UC3 may at least partially overlap with the exposure area of ​​the touch sensor contact portion TCT.

[0171] The first eaves support portion 321 and the second eaves support portion 322, as well as the protective pattern film 330, can be formed by a wet etching process for the region overlapping with the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312. The first eaves support portion 321 and the second eaves support portion 322 are etched to expose a portion of the upper surface of the touch sensor contact portion TCT. The first eaves support portion 321 and the second eaves support portion 322 are arranged such that, in the region overlapping with the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312, the first eaves support portion 321 and the second eaves support portion 322 are recessed inward compared to the first eaves pattern portion 311 and the second eaves pattern portion 312. The protective pattern film 330 is not completely etched and is patterned to cover the edges of the touch sensor contact portion TCT.

[0172] In the transparent display panel 110 according to the fourth embodiment of this disclosure, such as Figure 9 As shown, the undercut region UC3 can be formed in a grid shape below the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312. The undercut region UC3 can be formed such that the first eaves support portion 321 and the second eaves support portion 322, corresponding to the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312, are patterned more inwardly than the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312. The undercut region UC3 can include the portion below the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312, and the side surfaces of the first eaves support portion 321 and the second eaves support portion 322. An exposure area for exposing at least a portion of the touch sensor contact portion TCT can be formed between the first eaves support portion 321 and the second eaves support portion 322 having the undercut region UC3 and the protective pattern film 330. The exposure area of ​​the touch sensor contact portion TCT can be formed in a grid shape along the periphery of the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312, corresponding to the formation position of the undercut region UC3.

[0173] The light-emitting layer 132 can be formed on the first eaves pattern portion 311, the second eaves pattern portion 312, and the protective pattern film 330, and can be discontinuously disposed in the undercut region UC3, which is formed below the edges of the first eaves pattern portion 311 and the second eaves pattern portion 312 disposed above the exposed area of ​​the touch sensor contact portion TCT. The light-emitting layer 132 may not be formed in the exposed area of ​​the touch sensor contact portion TCT that overlaps with the undercut region UC3, thereby reducing or minimizing the area of ​​the light-emitting layer 132 disposed on the exposed area of ​​the touch sensor contact portion TCT.

[0174] The touch sensor electrode TSE can be formed over the first eaves pattern portion 311, the second eaves pattern portion 312, and the protective pattern film 330, and can contact the exposed area of ​​the touch sensor contact portion TCT, thereby allowing the touch sensor electrode TSE to be electrically connected to the touch sensor contact portion TCT. The light-emitting layer 132 does not contact the touch sensor contact portion TCT that overlaps with the undercut region UC3, and the touch sensor contact portion TCT is exposed. However, the touch sensor electrode TSE is not covered by the light-emitting layer 132 and directly contacts the exposed upper surface of the touch sensor contact portion TCT, and is electrically connected to the touch sensor contact portion TCT.

[0175] The touch sensor electrodes TSE and the light-emitting layer 132 formed on the first eaves pattern portion 311 and the second eaves pattern portion 312 can be disposed discontinuously along the edge of the undercut region UC3 in which the first eaves pattern portion 311 and the second eaves pattern portion 312 are formed. In this case, the touch sensor electrodes TSE and the light-emitting layer 132 on the first eaves pattern portion 311 and the second eaves pattern portion 312 can be electrically separated from the touch sensor TS.

[0176] In the transparent display panel 110 according to the fourth embodiment of this disclosure, the contact area of ​​the touch sensor contact portion TCT is formed into a grid shape corresponding to the shape of the undercut region UC3 by means of the first eave pattern portion 311 and the second eave pattern portion 312, which are separated from each other and arranged parallel to each other. This increases the contact area between the touch sensor electrode TSE and the touch sensor contact portion TCT and reduces the resistance between the touch sensor electrode TSE and the touch sensor contact portion TCT, thereby improving the reliability of the contact area and reducing the resistance deviation in the entire touch sensor electrode TSE. Therefore, in the step of detecting defects in the manufacturing process of the transparent display panel 110, the resulting false detections can be reduced or minimized by reducing the resistance deviation of the touch sensor, thereby improving the accuracy of defect detection.

[0177] Fifth Implementation Method

[0178] Figure 10A Examples include Figure 3 A plan view of the fifth embodiment of the touch sensor contact portion in region C. Figure 10B This is an example along Figure 10A Cross-sectional views of examples VII-VII', and Figure 10C This is an example along Figure 10A Cross-sectional view of example VIII-VIII'.

[0179] Combination Figures 3 to 5 Reference Figures 10A to 10C The transparent display panel 110 according to the fifth embodiment of the present disclosure may include a touch sensor line TL, a touch sensor connection line TCL, a touch sensor contact portion TCT, a touch sensor bridge pattern TBP, a plurality of support pattern films 210, 220 and 230, a central ridge pattern portion 310-C, a plurality of protruding ridge pattern portions 310-IP and 310-CP, a central ridge support portion 320-C, a plurality of protruding ridge support portions 320-IP and 320-CP, and a protective pattern film 330.

[0180] In addition to the fact that the eaves pattern is formed into an uneven shape with recessed and protruding portions that are repeated along the edge, Figures 10A to 10C The transparent display panel 110 according to the fifth embodiment of the present disclosure shown has a... Figures 6A to 6C The transparent display panel 110 according to the first embodiment of this disclosure is shown in the diagram. Figure 7A and Figure 7B The transparent display panel 110 according to the second embodiment of this disclosure is shown in the diagram. Figure 8A and Figure 8B The structure of the transparent display panel 110 according to the third embodiment of this disclosure is shown below. Figure 9 The transparent display panel 110 shown according to the fourth embodiment of this disclosure has a substantially the same structure, and therefore a detailed description of the same structure will be omitted.

[0181] Reference Figures 10A to 10C According to the fifth embodiment of this disclosure, the touch sensor contact portion TCT (or touch sensor contact electrode) of the transparent display panel 110 can be disposed above a plurality of support pattern films 210, 220, and 230. Above the touch sensor contact portion TCT, the central ridge pattern portion 310-C, a plurality of protruding ridge pattern portions 310-IP and 310-CP, the central ridge support portion 320-C, the plurality of protruding ridge support portions 320-IP and 320-CP, and the protective pattern film 330 can be configured to form an undercut region UC3 that exposes at least a portion of the touch sensor contact portion TCT.

[0182] The central ridge pattern portion 310-C and multiple protruding ridge pattern portions 310-IP and 310-CP can be disposed on a portion of the touch sensor contact portion TCT. The central ridge pattern portion 310-C and multiple protruding ridge pattern portions 310-IP and 310-CP can be formed into an uneven shape having a recessed portion and a protruding portion repeatedly disposed along the edge on a plane above the center of the touch sensor contact portion TCT.

[0183] The central eaves pattern portion 310-C can be positioned at the center of an uneven shape on a plane, and multiple protruding eaves pattern portions 310-IP and 310-CP can be positioned within the protruding portions of the uneven shape on a plane. The protruding eaves pattern portions 310-IP at each corner of the multiple protruding eaves pattern portions 310-IP and 310-CP can be formed as island-shaped patterns separate from the central eaves pattern portion 310-C. Furthermore, the protruding eaves pattern portions 310-CP between each corner of the multiple protruding eaves pattern portions 310-IP and 310-CP can extend from the central eaves pattern portion 310-C, and the central eaves pattern portion 310-C and the protruding eaves pattern portions 310-CP can be formed as an integral island-shaped pattern. An undercut region UC3 can be formed below the edges of the central eaves pattern portion 310-C and the multiple protruding eaves pattern portions 310-IP and 310-CP. For example, an undercut region UC3 with an uneven shape can be formed along the entire edge of the central cornice pattern portion 310-C and multiple protruding cornice pattern portions 310-IP and 310-CP.

[0184] The central ridge support portion 320-C may overlap with the central ridge pattern portion 310-C above the upper surface of the touch sensor contact portion TCT, thereby supporting the central ridge pattern portion 310-C. Multiple protruding ridge support portions 320-IP and 320-CP may overlap with the multiple protruding ridge pattern portions 310-IP and 310-CP above the upper surface of the touch sensor contact portion TCT, thereby supporting the multiple protruding ridge pattern portions 310-IP and 310-CP. Furthermore, the protective pattern film 330 may be formed to cover the edge of the touch sensor contact portion TCT. An exposure area for exposing at least a portion of the touch sensor contact portion TCT may be formed between the central ridge support portion 320-C, the multiple protruding ridge support portions 320-IP and 320-CP, and the protective pattern film 330. The undercut region UC3 may at least partially overlap with the exposure area of ​​the touch sensor contact portion TCT.

[0185] The central eaves support portion 320-C and the plurality of protruding eaves support portions 320-IP and 320-CP, as well as the protective pattern film 330, can be formed by a wet etching process for the area overlapping with the edges of the central eaves pattern portion 310-C and the plurality of protruding eaves pattern portions 310-IP and 310-CP. The central eaves support portion 320-C and the plurality of protruding eaves support portions 320-IP and 320-CP are etched to expose a portion of the upper surface of the touch sensor contact portion TCT. The central eaves support portion 320-C and the plurality of protruding eaves support portions 320-IP and 320-CP are arranged such that, in the area overlapping with the edges of the central eaves pattern portion 310-C and the plurality of protruding eaves pattern portions 310-IP and 310-CP, the central eaves support portion 320-C and the plurality of protruding eaves pattern portions 310-IP and 310-CP are recessed inward compared to the central eaves pattern portion 310-C and the plurality of protruding eaves pattern portions 310-IP and 310-CP. The protective pattern film 330 is not completely etched and is patterned to cover the edges of the touch sensor contact portion TCT.

[0186] In the transparent display panel 110 according to the fifth embodiment of this disclosure, as... Figures 10A to 10C As shown, the undercut region UC3 can be formed in an uneven shape below the edges of the central eave pattern portion 310-C and the plurality of protruding eave pattern portions 310-IP and 310-CP. The undercut region UC3 can be formed such that the central eave support portion 320-C and the plurality of protruding eave support portions 320-IP and 320-CP, corresponding to the edges of the central eave pattern portion 310-C and the plurality of protruding eave pattern portions 310-IP and 310-CP, are patterned more inwardly than the edges of the central eave pattern portion 310-C and the plurality of protruding eave pattern portions 310-IP and 310-CP. The undercut region UC3 may include a portion below the edges of the central eave pattern portion 310-C and the plurality of protruding eave pattern portions 310-IP and 310-CP, as well as the side surfaces of the central eave pattern portion 310-C and the plurality of protruding eave pattern portions 310-IP and 310-CP. An exposure area for exposing at least a portion of the touch sensor contact portion TCT can be formed between the central cornice support portion 320-C with the undercut region UC3, the plurality of protruding cornice support portions 320-IP and 320-CP, and the protective pattern film 330. The exposure area of ​​the touch sensor contact portion TCT can be formed simultaneously with the formation position of the undercut region UC3 in the periphery of the edges of the central cornice pattern portion 310-C and the plurality of protruding cornice pattern portions 310-IP and 310-CP.

[0187] The light-emitting layer 132 can be formed on the central ridge pattern portion 310-C, the plurality of protruding ridge pattern portions 310-IP and 310-CP, and the protective pattern film 330, and can be discontinuously disposed in the undercut region UC3, which is formed below the edges of the central ridge pattern portion 310-C and the plurality of protruding ridge pattern portions 310-IP and 310-CP disposed in the exposed area of ​​the touch sensor contact portion TCT. The light-emitting layer 132 may not be formed in the exposed area of ​​the touch sensor contact portion TCT that overlaps with the undercut region UC3, thereby reducing or minimizing the area of ​​the light-emitting layer 132 disposed in the exposed area of ​​the touch sensor contact portion TCT.

[0188] The touch sensor electrode TSE can be formed above the central ridge pattern portion 310-C and multiple protruding ridge pattern portions 310-IP and 310-CP, as well as the protective pattern film 330, and can contact the exposed area of ​​the touch sensor contact portion TCT, thereby electrically connecting the touch sensor electrode TSE to the touch sensor contact portion TCT. The light-emitting layer 132 does not contact the touch sensor contact portion TCT that overlaps with the undercut region UC3, and the touch sensor contact portion TCT is exposed. However, the touch sensor electrode TSE is not covered by the light-emitting layer 132 and directly contacts the exposed upper surface of the touch sensor contact portion TCT, and is electrically connected to the touch sensor contact portion TCT.

[0189] The light-emitting layer 132 and the touch sensor electrode TSE formed on the upper surfaces of the central eaves pattern portion 310-C and the plurality of protruding eaves pattern portions 310-IP and 310-CP can be disposed discontinuously along the edge of the undercut region UC3 in which the central eaves pattern portion 310-C and the plurality of protruding eaves pattern portions 310-IP and 310-CP are formed. In this case, the light-emitting layer 132 and the touch sensor electrode TSE above the central eaves pattern portion 310-C and the plurality of protruding eaves pattern portions 310-IP and 310-CP can be electrically separated from the touch sensor TS.

[0190] In the transparent display panel 110 according to the fifth embodiment of this disclosure, the contact area of ​​the touch sensor contact portion TCT is formed into an uneven shape corresponding to the shape of the undercut region UC3 through the central ridge pattern portion 310-C and multiple protruding ridge pattern portions 310-IP and 310-CP. This increases the contact area between the touch sensor electrode TSE and the touch sensor contact portion TCT and reduces the resistance between the touch sensor electrode TSE and the touch sensor contact portion TCT, thereby improving the reliability of the contact area and reducing the resistance deviation in the entire touch sensor electrode TSE. Therefore, in the step of detecting defects in the manufacturing process of the transparent display panel 110, the resulting false detections can be reduced or minimized by reducing the resistance deviation of the touch sensor, thereby improving the accuracy of defect detection.

[0191] Therefore, the transparent display device according to this disclosure can increase the contact area in the contact area used to connect the touch sensor and the touch sensor line. Consequently, the transparent display device according to this disclosure can improve the accuracy of defect detection arising in the manufacturing process of the transparent display device, reduce the resistance between the touch sensor and the touch sensor line, and improve the reliability of the contact area.

[0192] It will be apparent to those skilled in the art that this disclosure is not limited to the embodiments and drawings described above, and that various substitutions, modifications, and variations may be made in this disclosure without departing from its spirit or scope. Therefore, the scope of this disclosure is defined by the appended claims, and all variations or modifications derived from the meaning, scope, and equivalent concepts of the claims are intended to fall within the scope of this disclosure.

Claims

1. A transparent display device, the transparent display device comprising: A substrate, the substrate including a transmissive region and a non-transmissive region, the non-transmissive region including a light-emitting region in which a light-emitting element is disposed; A touch sensor, wherein the touch sensor is disposed above the transmissive region of the substrate; A touch sensor line, the touch sensor line being disposed above the non-transmissive area of ​​the substrate and extending in a first direction; A touch sensor contact portion is disposed in the transmission region and configured to electrically connect the touch sensor and a touch sensor connection line extending in a second direction; as well as A touch sensor bridge pattern is provided between the touch sensor contact portion and the touch sensor connection line. A first undercut area is provided above the touch sensor contact portion, the first undercut area exposing at least a portion of the touch sensor contact portion, and The touch sensor is in direct contact with the touch sensor contact portion exposed by the first undercut region.

2. The transparent display device according to claim 1, further comprising a plurality of support pattern films, the plurality of support pattern films overlapping the contact portion of the touch sensor in the transmissive region, and comprising inorganic materials. in, The touch sensor contact portion is disposed above the plurality of support pattern films.

3. The transparent display device according to claim 2, in, The plurality of support pattern films include: A first support pattern film, the first support pattern film being disposed between the touch sensor line and the touch sensor bridge pattern and configured to include at least one inorganic insulating film; and A second support pattern film is disposed between the touch sensor bridge pattern and the touch sensor contact portion.

4. The transparent display device according to claim 3, in, The touch sensor bridge pattern is connected to the touch sensor connection line through a first contact hole formed in the first support pattern film, and The touch sensor contact portion is connected to the touch sensor bridge pattern through a second contact hole formed in the second support pattern film.

5. The transparent display device according to claim 1, further comprising: A contact structure is disposed above the contact portion of the touch sensor, the contact structure having a first undercut region that exposes at least a portion of the contact portion of the touch sensor, and Wherein, the touch sensor is in direct contact with at least a portion of the touch sensor contact portion exposed by the first undercut region.

6. The transparent display device according to claim 5, in, The contact structure includes at least one of organic insulating materials and inorganic insulating materials.

7. The transparent display device according to claim 1, further comprising a protective pattern film formed above the touch sensor contact portion and configured to cover the edge of the touch sensor contact portion.

8. The transparent display device according to claim 2, in, The touch sensor contact portion includes touch sensor contact electrodes, which are disposed above the plurality of support pattern films. The transparent display device further includes a contact structure disposed above the touch sensor contact electrode and configured to include a first undercut region that exposes at least a portion of the touch sensor contact electrode. The touch sensor is in direct contact with the touch sensor contact electrode exposed by the contact structure.

9. The transparent display device according to claim 1, further comprising: A contact structure having a first undercut region that exposes at least a portion of the touch sensor contact portion. The contact structure includes: The eaves pattern portion is disposed above a portion of the touch sensor contact portion; and An eaves support portion, which overlaps with at least a portion of the upper surface of the touch sensor contact portion and is configured to support the eaves pattern portion. The first undercut region includes a portion below the edge of the eaves pattern portion and is adjacent to the side surface of the eaves support portion.

10. The transparent display device according to claim 9, further comprising a protective pattern film, the protective pattern film being formed to cover the edge of the touch sensor contact portion and comprising the same material as the eaves support portion. in, The height of the protective pattern film is lower than or equal to the height of the eaves support portion.

11. The transparent display device according to claim 9, in, The eaves pattern portion comprises organic insulating material, and the eaves support portion comprises inorganic insulating material.

12. The transparent display device according to claim 1, further comprising: The eaves pattern part, The first undercut region is formed below at least a portion of the edge of the eaves pattern portion.

13. The transparent display device according to claim 12, wherein, The eaves pattern includes at least one island-shaped pattern.

14. The transparent display device according to claim 12, wherein, The first undercut region is formed into a closed loop shape along the edge of the eaves pattern portion.

15. The transparent display device according to claim 1, further comprising: The eaves pattern part, The eaves pattern portion includes a first eaves pattern portion and a second eaves pattern portion, which are spaced apart from each other and arranged parallel to each other. The first undercut region is formed below at least a portion between the first eaves pattern portion and the second eaves pattern portion.

16. The transparent display device according to claim 15, in, The first eaves pattern portion and the second eaves pattern portion include island-shaped patterns spaced apart from each other.

17. The transparent display device according to claim 15, in, The first undercut region is formed into a grid shape along the edges of the first eaves pattern portion and the second eaves pattern portion.

18. The transparent display device according to claim 1, further comprising: The eaves pattern part, The eaves pattern portion is formed into an uneven shape, in which recessed and protruding portions repeat along the edge of the eaves pattern portion, and The first undercut region is formed in an uneven shape below the edge of the eaves pattern portion.

19. The transparent display device according to claim 18, in, The eaves pattern portion includes island-shaped patterns having the aforementioned uneven shape.

20. The transparent display device according to claim 18, in, The protruding portion of the irregular shape is located at each corner of the eaves pattern portion.

21. The transparent display device according to claim 18, in, The eaves pattern portion includes a central eaves pattern portion and a plurality of protruding eaves pattern portions along the edge of the central eaves pattern portion, corresponding to the protruding portion of the uneven shape. The protruding eaves pattern portions, located at each corner of the eaves pattern portion, include island-shaped patterns separate from the central eaves pattern portion, and The central eave pattern includes an island pattern, which is integrated with the protruding eave pattern portions located between corresponding corners of the plurality of protruding eave pattern portions.

22. The transparent display device according to claim 1, in, The light-emitting element includes a first electrode, a light-emitting layer, and a second electrode. The second electrode includes a cathode disposed in the non-transmissive region and configured to form the light-emitting element, and a touch sensor electrode disposed in the transmissive region and configured to form the touch sensor.

23. The transparent display device according to claim 22, further comprising a disconnected portion having a second undercut region disposed in the transmissive region along the edge of the touch sensor electrode. in, The cathode and the touch sensor electrode are separated from each other by the disconnection portion.

24. The transparent display device according to claim 23, further comprising: Multiple inorganic insulating films are disposed above the substrate in the non-transmissive region and comprise inorganic materials; as well as A planarization film, disposed above a plurality of inorganic insulating films in the non-transmissive region, and comprising organic materials. The second undercut region of the disconnected portion is formed such that the planarization film protrudes more than the plurality of inorganic insulating films in the direction of the transmission region.

25. The transparent display device according to claim 23, further comprising: A common power line, which overlaps with the touch sensor line in the non-transparent area and extends in the first direction; A cathode contact portion is disposed in the transmission region between the common power line and the disconnection portion; as well as A power connection cable configured to connect the cathode contact portion and the common power line to each other. The cathode is electrically connected to the common power line through the cathode contact portion.

26. The transparent display device according to claim 25, further comprising: An undercut structure that exposes at least a portion of the cathode contact portion. The cathode is in direct contact with the cathode contact portion exposed by the undercut structure.

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