Display device

Abstract

A display device is provided. According to an embodiment, the display device includes: a substrate including a display area including a primary pixel and a sensor area including auxiliary pixels and a transmissive area; a first anode electrode disposed corresponding to the primary pixel; a first pixel-defining layer defining an opening partially exposing the first anode electrode; a spacer disposed on the first pixel-defining layer and protruding in a thickness direction; a second anode electrode disposed corresponding to the auxiliary pixel; and a second pixel-defining layer defining an opening partially exposing the second anode electrode. The spacer and the second pixel-defining layer are formed simultaneously from the same material.

Description

Technical Field

[0001] The present disclosure relates to a display device. Background Art

[0002] The display device is a device for displaying an image and includes a display panel such as a light-emitting display panel or a liquid crystal display panel, the display panel including an organic light-emitting diode (OLED) or a quantum dot electroluminescent device (QD-EL).

[0003] The display device includes a pixel circuit and a driving unit for driving the pixel circuit. The driving unit can be arranged in a non-display area adjacent to the display area, and considering the function of the display device, the non-display area can be considered as a dead zone. To reduce the dead zone, the display device may include connecting lines for transmitting data signals to signal lines arranged in the display area. However, since the pattern may be visible due to the difference in length and area between the connecting lines, a black pixel defining layer can be used to prevent the pattern from being visible.

[0004] Recently, display devices in which sensors are disposed below a display panel include a pixel region for displaying an image and a sensor region having a transmissive region in which the sensor can be disposed. However, when a black pixel-defining layer is used in the display device, the transmittance of the sensor region may be reduced. Summary of the Invention

[0005] Technical issues

[0006] An object of the present disclosure is to provide a display device in which a sensor is disposed under a display panel and pixel defining layers of a pixel region and a sensor region are formed of their respective materials different from each other to prevent a signal line pattern from being visible and to improve transmittance of the sensor region.

[0007] The objects of the present disclosure are not limited to those mentioned above, and additional objects of the present disclosure not mentioned herein will be clearly understood by those skilled in the art from the following description of the present disclosure.

[0008] Technical Solution

[0009] A display device according to one embodiment of the present disclosure for achieving the above-mentioned object includes: a substrate including a display area including a primary pixel and a sensor area including an auxiliary pixel and a transmissive area; a first anode electrode included in the primary pixel; a first pixel-defining layer defining an opening partially exposing the first anode electrode; a spacer disposed on the first pixel-defining layer and protruding in a thickness direction of the substrate; a second anode electrode included in the auxiliary pixel; and a second pixel-defining layer defining an opening partially exposing the second anode electrode. The spacer and the second pixel-defining layer are formed simultaneously from the same material.

[0010] The first pixel defining layer may include carbon black and an organic insulating material.

[0011] The second pixel defining layer and the spacer may include at least one transparent organic material selected from polyimide, polyamide, acrylic resin, and phenol resin.

[0012] The display device may further include: a component disposed below the transmission area, wherein the component may include at least one of an infrared sensor, a visible light sensor, and an acoustic sensor.

[0013] The size of one transmissive area may be larger than the size of one light emitting area of ​​the auxiliary pixel.

[0014] The number of auxiliary pixels per unit area may be smaller than the number of main pixels per unit area.

[0015] A display device according to an embodiment of the present disclosure for solving the above-mentioned problem includes: a substrate including a display area including a main pixel and a sensor area including an auxiliary pixel and a transmission area; a first anode electrode included in the main pixel; a first pixel defining layer defining an opening partially exposing the first anode electrode; a spacer provided on the first pixel defining layer and protruding in the thickness direction of the substrate; a second anode electrode included in the auxiliary pixel; and a second pixel defining layer defining an opening partially exposing the second anode electrode. The second pixel defining layer includes a dam portion and a protruding portion covering the dam portion and protruding in the thickness direction. The first pixel defining layer and the dam portion can be formed simultaneously from the same material.

[0016] The first pixel defining layer and the bank portion may include carbon black and an organic insulating material.

[0017] The protrusion and the spacer may include at least one transparent organic material selected from polyimide, polyamide, acrylic resin, and phenol resin.

[0018] A height from the substrate to an upper surface of the protrusion portion may be equal to a height from the substrate to an upper surface of the spacer.

[0019] The display device may further include: a component disposed below the transmission area, wherein the component may include at least one of an infrared sensor, a visible light sensor, and an acoustic sensor.

[0020] The size of one transmissive area may be larger than the size of one light emitting area of ​​the auxiliary pixel.

[0021] The number of auxiliary pixels per unit area may be smaller than the number of main pixels per unit area.

[0022] A display device according to an embodiment of the present disclosure for solving the above-mentioned problem includes: a substrate including a display area including a main pixel, a sensor area including an auxiliary pixel and a transmission area, and an opening area formed in the sensor area, and including a non-display area between the sensor area and the opening area; a first anode electrode included in the main pixel; a first pixel defining layer defining an opening partially exposing the first anode electrode; a spacer disposed on the first pixel defining layer; a second anode electrode included in the auxiliary pixel; and a second pixel defining layer defining an opening partially exposing the second anode electrode. The display device further includes: an anti-leakage light wall disposed in the non-display area and formed along the opening area. The first pixel defining layer and the anti-leakage light wall are formed simultaneously from the same material.

[0023] The first pixel defining layer and the light leakage preventing wall may include carbon black and an organic insulating material.

[0024] The second pixel defining layer and the spacer may include at least one transparent organic material selected from polyimide, polyamide, acrylic resin, and phenol resin.

[0025] The display device may further include: a component disposed below the transmission area, wherein the component may include at least one of an infrared sensor, a visible light sensor, and an acoustic sensor.

[0026] The size of one transmissive area may be larger than the size of one light emitting area of ​​the auxiliary pixel.

[0027] The number of auxiliary pixels per unit area may be smaller than the number of main pixels per unit area.

[0028] The display device may further include: a thin film encapsulation layer covering the display area and the sensor area, wherein the thin film encapsulation layer may include a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer sequentially stacked.

[0029] Beneficial effects

[0030] According to one embodiment of the present disclosure, in a display device in which a sensor is disposed below a display panel, pixel defining layers of a pixel region and a sensor region may be formed of their respective materials different from each other to prevent a signal line pattern from being visible and to improve transmittance of the sensor region.

[0031] The effects according to the embodiments of the present disclosure are not limited to those mentioned above, and more effects are included in the following description of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a perspective view showing a display device according to one embodiment.

[0033] Figure 2 It shows Figure 1 An exploded view of the display device is shown unfolded.

[0034] Figure 3 It shows Figure 1 A plan view of an example of a display device.

[0035] Figure 4 It shows Figure 1 Schematic cross-sectional view of an example of a display device.

[0036] Figure 5 is an equivalent circuit diagram showing a pixel that can be provided in a display area of ​​a display device according to one embodiment and performs active matrix driving.

[0037] Figure 6 is an equivalent circuit diagram showing a pixel that can be provided in a display area of ​​a display device according to one embodiment and performs active matrix driving.

[0038] Figure 7 is with Figure 2 1 and 2. A schematic plan view corresponding to and partially showing a boundary portion between the display area and the sensor area.

[0039] Figure 8 It is along Figure 7 Schematic cross-sectional view taken along line III-III'.

[0040] Figure 9 It is along Figure 7 Schematic cross-sectional view taken along line II-II'.

[0041] Figure 10 It is along Figure 7 Schematic cross-sectional view taken along line IV-IV'.

[0042] Figure 11 is a perspective view showing a display device according to one embodiment.

[0043] Figures 12a to 12c is a schematic cross-sectional view showing a display device according to one embodiment.

[0044] Figure 13 is a plan view showing lines (signal lines) located in one area of ​​a display panel according to one embodiment.

[0045] Figures 14 to 16 is a cross-sectional view showing a display device according to one embodiment. DETAILED DESCRIPTION

[0046] The advantages and features of the present disclosure and the methods for implementing these advantages and features will be illustrated by the embodiments described below with reference to the accompanying drawings. However, the present disclosure may be embodied in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. Furthermore, the present disclosure is limited only by the scope of the claims.

[0047] The case where an element or layer is “on” another element or layer includes all cases where the element or layer is not only directly on the other element or layer but also interposed with another element or layer.

[0048] The same reference numbers will be used throughout the disclosure to refer to the same or like parts.

[0049] Reference will now be made to embodiments of the present disclosure with reference to the accompanying drawings.

[0050] Figure 1 is a perspective view of a display device according to one embodiment. Figure 2 It shows Figure 1 An exploded view of the display device is shown unfolded.

[0051] refer to Figure 1 and Figure 2 , the display device 1 can display an image. For example, the display device 1 may include an organic light-emitting display (OLED) device, a liquid crystal display (LCD) device, a plasma display panel (PDP) device, a field emission display (FED) device, or an electrophoretic display (EPD) device. Although the following description is exemplarily based on the display device 1 being an organic light-emitting display device, the present disclosure is not limited thereto.

[0052] The display device 1 can be applied to various products such as televisions, laptop computers, monitors, billboards, and IoT devices, as well as portable electronic devices such as mobile phones, smartphones, tablet PCs (personal computers), smart watches, watch phones, mobile communication terminals, electronic diaries, electronic books, portable multimedia players (PMPs), navigation systems, and ultra-mobile PCs (UMPCs)).

[0053] The display device 1 may include a main display surface 10 and sub-display surfaces 11 , 12 , 13 , and 14 .

[0054] The main display surface 10 generally has a plate shape, is located on one plane of the display device 1, and may have the largest area (or size) among the main display surface 10 and the sub-display surfaces 11, 12, 13, and 14. For example, the main display surface 10 may be located on the upper surface of the display device 1. The main display surface 10 may have a polygonal shape such as a rectangle or a flat shape such as a circle or an ellipse.

[0055] The sub-display surfaces 11, 12, 13, and 14 may be located on a plane different from the plane on which the main display surface 10 is located. Each of the sub-display surfaces 11, 12, 13, and 14 has an area smaller than that of the main display surface 10, and the sub-display surfaces 11, 12, 13, and 14 may be located on their respective planes different from each other. The sub-display surfaces 11, 12, 13, and 14 may be connected to the edges of the main display surface 10, and may be bent or curved from the main display surface 10 (or the edges of the main display surface 10).

[0056] For example, when the main display surface 10 has a rectangular shape, the display device 1 may include first to fourth sub-display surfaces 11, 12, 13 and 14, and the first to fourth sub-display surfaces 11, 12, 13 and 14 may be connected to the four sides of the rectangle respectively.

[0057] The first sub-display surface 11 may be connected to a first long side of the main display surface 10 and may be bent in a vertical direction from the main display surface 10 to constitute a left side of the display device 1. Similarly, the second sub-display surface 12 may be connected to a second long side of the main display surface 10 and may be bent in a vertical direction from the main display surface 10 to constitute a right side of the display device 1. The third sub-display surface 13 may be connected to a first short side of the main display surface 10 to constitute an upper side of the display device 1, and the fourth sub-display surface 14 may be connected to the second short side of the main display surface 10 to constitute a lower side of the display device 1.

[0058] In this case, the display device 1 may be a multi-surface stereoscopic display device that displays images on the upper surface and the side surfaces connected to the upper surface. Figure 2 The lower surface of the display device 1 is shown to not include a display surface, but this is merely exemplary and not limiting. For example, the display device 1 may further include a lower surface for displaying an image.

[0059] The main display surface 10 may include a main display area DA0 including main pixels Pm and a sensor area SA including auxiliary pixels Pa and a transmissive area TA.

[0060] The main image may be provided using light emitted from a plurality of main pixels Pm provided in the main display area DA0 .

[0061] The display device 1 includes a sensor area SA. The sensor area SA may be an area in which components such as sensors using infrared rays, visible light, or sound are disposed. The sensor area SA may include a transmissive area TA through which light and / or sound output from the components to the outside or traveling from the outside toward the components can be transmitted.

[0062] Auxiliary pixels Pa may be provided in the sensor area SA, and a predetermined image may be provided using light emitted from the plurality of auxiliary pixels Pa. The image provided by the sensor area SA is an auxiliary image and may have a lower resolution than the image provided by the main display area DA0. That is, the sensor area SA includes a transmissive area TA through which light and / or sound can be transmitted, and the number of auxiliary pixels Pa that may be provided per unit area may be smaller than the number of primary pixels Pm provided per unit area in the main display area DA0.

[0063] The sensor area SA may be disposed at one side of the main display area DA0 , and as an embodiment, the sensor area SA may be disposed at an upper side of the main display area DA0 .

[0064] The display device 1 may include a display area DA and a non-display area NDA. The display area DA is an area for displaying an image and may include pixels, which are the smallest units of light-emitting units for displaying an image. The non-display area NDA is an area for not displaying an image and may not include pixels. Figure 5 and Figure 6 Describes pixels.

[0065] First, the display area DA may include a main display area DA0 and first to fourth sub display areas DA1 to DA4.

[0066] The main display area DA0 may be located on the main display surface 10. For example, the main display surface 10 may include only the main display area DA0. The first sub-display area DA1 may be located on the first sub-display surface 11, and the first sub-display area DA1 may be connected to the main display area DA0. Similarly, the second to fourth sub-display areas DA2 to DA4 may be located on the second to fourth sub-display surfaces 12 to 14, respectively, and each of the second to fourth sub-display areas DA2 to DA4 may be connected to the main display area DA0.

[0067] In the exploded view of the display device 1, the non-display area NDA can be provided along the edge of the display area DA (or the outermost edges of the main display surface 10 and the sub-display surfaces 11, 12, 13, and 14). Drive lines and drive circuits, etc., can be provided in the non-display area NDA. The non-display area NDA may include, but is not limited to, a black matrix for blocking light leakage and decorative ink.

[0068] The non-display area NDA may include first to fourth non-display areas NDA1 to NDA4 (or first to fourth sub-non-display areas). The first non-display area NDA1 may be located on the first sub-display surface 11. Similarly, the second to fourth non-display areas NDA2 to NDA4 may be located on the second to fourth sub-display surfaces 12 to 14, respectively.

[0069] In an embodiment, the non-display area NDA (or the display device 1) may include first to fourth corner wings 21 to 24 (or corner portions, corner areas, corner wing areas). Each of the first to fourth corner wings 21 to 24 may be arranged adjacent to a corner (i.e., a portion where two sides intersect) of the main display surface 10. Except for their positions, the first to fourth corner wings 21 to 24 may be substantially identical to each other. Hereinafter, common features of the first to fourth corner wings 21 to 24 will be described based on the first corner wing 21, and their repeated description will be omitted.

[0070] The first corner wing 21 may have a shape that protrudes outward from the corner of the main display surface 10. The first corner wing 21 may be located between the first sub-display surface 11 and the fourth sub-display surface 14 (or may be located between the first sub-display area DA1 and the fourth sub-display area DA4 or between the first non-display area NDA1 and the fourth non-display area NDA4), or may smooth the intersection angle between the first sub-display surface 11 and the fourth sub-display surface 14. One end of the first corner wing 21 may be located on the first sub-display surface 11, and the other end of the first corner wing 21 may be located on the fourth sub-display surface 14.

[0071] The first corner wing 21 can provide a space in which a signal line is set or a space through which a signal line passes. When the first sub-display surface 11 and the fourth sub-display surface 14 are bent, the first corner wing 21 can be folded inward (i.e., toward the internal space or center of gravity of the display device 1). In this case, the first corner wing 21 can be bent along the bending line 20 so that one end of the first corner wing 21 (i.e., the first part adjacent to the first sub-display surface 11) and the other end of the first corner wing 21 (i.e., the second part adjacent to the fourth sub-display surface 14) can face each other. One end and the other end of the first corner wing 21 can be in contact with each other, or can be connected to each other by a connecting layer or the like.

[0072] Since the first corner wing 21 is folded inward when the first sub-display surface 11 and the fourth sub-display surface 14 are bent, the first corner wing 21 may not be exposed to the outside, and similarly, the second corner wing 22, the third corner wing 23, and the fourth corner wing 24 may not be exposed to the outside. Therefore, the first to fourth corner wings 21 to 24 may be included in the non-display area NDA.

[0073] The non-display area NDA (or the display device 1) may further include a driving region 30, and the driving region 30 may be connected to at least one of the first to fourth sub-display surfaces 11, 12, 13, and 14. For example, the driving region 30 may be connected to one edge of the fourth sub-display surface 14 (for example, in the exploded view of the display device 1, the lower edge of the fourth sub-display surface 14).

[0074] like Figure 1 As shown in , when the fourth sub-display surface 14 is bent perpendicularly relative to the main display surface 10, the driving region 30 can be bent perpendicularly again relative to the fourth sub-display surface 14 (that is, can be bent at an angle of 180° relative to the main display surface 10), and can be arranged below the main display surface 10 in the thickness direction of the display device 1. The driving region 30 can overlap with the main display surface 10 and can be parallel to the main display surface 10.

[0075] The display device 1 may include a driver chip 40 (or may include a pad portion, the pad portion being provided with the driver chip 40 disposed thereon and electrically connected to the driver chip 40), and the driver chip 40 may be disposed in the drive area 30. The driver chip 40 may generate a drive signal required to drive the pixel to provide the drive signal to the display area DA (or pixel). For example, the driver chip 40 may generate a data signal for determining the luminous brightness of the pixel. In this case, the driver chip 40 may provide the data signal to the pixel through a drive line (not shown) formed in the drive area 30 and a signal line (not shown) (e.g., a data line) formed on the main display surface 10 and the sub-display surfaces 11, 12, 13, and 14.

[0076] Figure 3 It shows Figure 1 A plan view of an example of a display device.

[0077] refer to Figures 1 to 3 , the display device 1 may include a signal line 136, a connection line 146, and a driving line 60. The signal line 136, the connection line 146, and the driving line 60 may be arranged to extend in the second direction DR2 and be symmetrical to each other based on a reference axis (not shown) passing through the center of the area of ​​the display device 1. Hereinafter, the signal line 136, the connection line 146, and the driving line 60 will be described based on being relatively adjacent to the first sub-display surface 11.

[0078] The signal lines 136 may include data lines DL1 to DLm (or signal lines) (m is an integer equal to or greater than 3).

[0079] The data lines DL1 to DLm may extend in the second direction DR2 and may be sequentially arranged at certain intervals along the first direction DR1. Each of the data lines DL1 to DLm may extend across the display area DA in the second direction DR2. Figure 3 In the embodiment, the data lines DL1 to DLm extend in a straight line along the second direction DR2 from the main display area DA0 and the sensor area SA. However, the data lines DL1 to DLm may extend from the sensor area SA while bypassing the transmissive area TA. In this case, the first to k-th data lines DL1 to DLk among the data lines DL1 to DLm may be arranged on only one display surface (where k is an integer equal to or greater than 2 and less than m). The following description will be based on the assumption that k is 7 and m is greater than 14.

[0080] For example, the first to seventh data lines DL1 to DL7 may extend from one end of the first non-display area NDA1 across the first sub-display area DA1 to the other end of the first non-display area NDA1 (e.g., from the lower side to the upper side). The eighth to fourteenth data lines DL8 to DL14 may extend from the fourth non-display area NDA4 across the fourth sub-display area DA4, the main display area DA0, and the third sub-display area DA3 to the third non-display area NDA3. In addition, some of the data lines DL1 to DLm may extend from one corner wing to another corner wing among the corner wings 21 to 24. For example, the third to seventh data lines DL3 to DL7 may extend from the first corner wing 21 to the third corner wing 23.

[0081] The connection line 146 may electrically connect a portion of the signal lines 136 with a portion of the driving lines 60. The connection line 146 may be disposed on a layer different from the layer on which the signal line 136 is disposed and may be spaced apart from the signal line 136 by an insulating layer.

[0082] The connection lines 146 may include first to k-th data connection lines DM1 to DMk (or first to k-th connection lines) to correspond to the first to k-th data lines DL1 to DLk. When k is 7, the connection lines 146 may include first to seventh data connection lines DM1 to DM7. The data connection lines DM1 to DM7 may correspond to the data lines DL1 to DL7 provided on the first sub-display surface 11, respectively.

[0083] The first to seventh data link lines DM1 to DM7 may extend from the fourth non-display area NDA4 of the fourth sub-display surface 14 (e.g., the lower side of the fourth non-display area NDA4) via the display area DA to one end of the corresponding signal line 136 (e.g., the lower side of the first non-display area NDA1 of the first sub-display surface 11 and the first corner wing 21). The first to seventh data link lines DM1 to DM7 may be spaced apart from each other at specific intervals. The intervals between the first to seventh data link lines DM1 to DM7 may be equal to the intervals between the first to seventh data lines DL1 to DL7.

[0084] Figure 4 is a schematic cross-sectional view showing a display device according to an embodiment of the present disclosure, and can be used in conjunction with Figure 1 It corresponds to the cross section taken along line II'.

[0085] refer to Figure 4 The display device 1 may include a display panel PN and a component CP. The display panel PN may include a display element layer DE, and the component CP may be disposed to correspond to the sensor area SA.

[0086] The display panel PN may include a substrate SUB, a display element layer DE disposed on the substrate SUB, and a thin film encapsulation layer TFE as a sealing member for sealing the display element layer DE. The display panel PN may further include a lower protection film PF disposed under the substrate SUB.

[0087] The substrate SUB may include glass or a polymer resin. The polymer resin may include polyethersulfone (PES), polyacrylate (PAR), polyetherimide (PEI), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), polyphenylene sulfide (PPS), polyallyl ester, polyimide (PI), polycarbonate (PC), or cellulose acetate propionate (CAP). The substrate SUB including the polymer resin may have flexible, rollable, or bendable properties. The substrate SUB may be a multilayer structure including an inorganic layer (not shown) and a layer including a polymer resin.

[0088] The display element layer DE may include a circuit layer including thin film transistors TFT and TFT', organic light emitting diodes OLED and OLED' as display elements, and insulating layers IL and IL' between the circuit layer and the organic light emitting diodes OLED and OLED'.

[0089] A main pixel Pm including a main thin film transistor TFT and a main organic light emitting diode OLED connected to the main thin film transistor TFT can be set in the main display area DA0, and an auxiliary pixel Pa including an auxiliary thin film transistor TFT' and an auxiliary organic light emitting diode OLED' connected to the auxiliary thin film transistor TFT' can be set in the sensor area SA.

[0090] The auxiliary thin film transistor TFT' and the transmissive area TA where no display element is disposed may be disposed in the sensor area SA. The transmissive area TA may be understood as an area where light / signals emitted from and / or incident on the component CP are transmitted.

[0091] The component CP may be located in the sensor area SA. The component CP may be an electronic component that uses light or sound. For example, the component CP may be a sensor for receiving and using light (such as an infrared sensor), a sensor for outputting and sensing light or sound to measure distance or identify fingerprints, etc., a small lamp for outputting light, or a speaker for outputting sound. In the case of light-based electronic components, light of various wavelengths such as visible light, infrared light, and ultraviolet light may be used. A plurality of components CP may be provided in the sensor area SA. For example, a light-emitting element and a light-receiving element may be provided together in one sensor area SA as a component CP. Alternatively, a light-emitting unit and a light-receiving unit may be provided simultaneously in one component CP.

[0092] A lower electrode layer (BSM) may be disposed in the sensor area SA. The lower electrode layer (BSM) may be disposed to correspond to a lower portion of the auxiliary thin film transistor (TFT'). The lower electrode layer (BSM) may block external light from reaching the auxiliary pixel (Pa) including the auxiliary thin film transistor (TFT'). For example, the lower electrode layer (BSM) may block light emitted from the component (CP) from reaching the auxiliary pixel (Pa).

[0093] In some embodiments, a constant voltage or signal may be applied to the lower electrode layer BSM to prevent the pixel circuit from being damaged by electrostatic discharge.

[0094] The thin film encapsulation layer TFE may include at least one inorganic encapsulation layer and at least one organic encapsulation layer. In this regard, Figure 4 A first inorganic encapsulating layer TFE1 and a second inorganic encapsulating layer TFE3 and an organic encapsulating layer TFE2 between the first and second inorganic encapsulating layers TFE1 and TFE3 are shown.

[0095] The first inorganic encapsulation layer TFE1 and the second inorganic encapsulation layer TFE3 may include one or more inorganic insulating materials (such as aluminum oxide, titanium oxide, tantalum oxide, hafnium oxide, zinc oxide, silicon oxide, silicon nitride, and silicon oxynitride). The organic encapsulation layer TFE2 may include a polymer material. The polymer material may include acrylic resin, epoxy resin, polyimide, polyethylene, etc.

[0096] The lower protective film PF may be attached to the lower portion of the substrate SUB to support and protect the substrate SUB. The lower protective film PF may include an opening PF_OP corresponding to the sensor area SA. The lower protective film PF including the opening PF_OP may improve light transmittance of the sensor area SA. The lower protective film PF may include polyethylene terephthalate (PET) or polyimide (PI).

[0097] The size of the sensor area SA may be larger than the area in which the component CP is disposed. Therefore, the area of ​​the opening PF_OP provided in the lower protective film PF may not match the size of the sensor area SA. For example, the area of ​​the opening PF_OP may be smaller than the size of the sensor area SA.

[0098] A plurality of components CP may be provided in the sensor area SA. The plurality of components CP may have different functions.

[0099] Although not shown, components such as an input sensing member for sensing a touch input, a transparent window, and an anti-reflection member including a polarizer and a retarder or a color filter and a black matrix may be further disposed on the display panel PN.

[0100] Although the thin film encapsulation layer TFE is used as an encapsulation member for sealing the display element layer DE as shown in this embodiment, the present disclosure is not limited thereto. For example, a sealing substrate bonded to the substrate SUB through a sealant or glass frit may be used as a sealing member for sealing the display element layer DE.

[0101] Figure 5 and Figure 6 is an equivalent circuit diagram of a main pixel and / or an auxiliary pixel that may be included in a display panel according to one embodiment of the present disclosure.

[0102] refer to Figure 5 , each of the pixels Pm and Pa includes a pixel circuit PC connected to a scan line SL and a data line DL and an organic light emitting diode OLED connected to the pixel circuit PC.

[0103] The pixel circuit PC includes a driving thin film transistor T1, a switching thin film transistor T2, and a storage capacitor Cst. The switching thin film transistor T2 is connected to the scan line SL and the data line DL, and transmits a data signal Dm input through the data line DL to the driving thin film transistor T1 according to a scan signal Sn input through the scan line SL.

[0104] The storage capacitor Cst is connected to the switching thin film transistor T2 and the driving voltage line PL and stores a voltage corresponding to a difference between a voltage transferred from the switching thin film transistor T2 and a first power voltage ELVDD (or driving voltage) supplied to the driving voltage line PL.

[0105] The driving thin film transistor T1 may be connected to the driving voltage line PL and the storage capacitor Cst, and may control a driving current flowing from the driving voltage line PL to the organic light emitting diode OLED in response to a voltage value stored in the storage capacitor Cst. The organic light emitting diode OLED may emit light having a predetermined brightness due to the driving current.

[0106] Despite Figure 5 In the embodiment, the pixel circuit PC includes two thin film transistors and one storage capacitor, but the present disclosure is not limited thereto. Figure 6 As shown in , the pixel circuit PC may include seven thin film transistors and one storage capacitor.

[0107] refer to Figure 6 Each of the pixels Pm and Pa includes a pixel circuit PC and an organic light-emitting diode (OLED) connected to the pixel circuit PC. The pixel circuit PC may include multiple thin-film transistors and storage capacitors. The thin-film transistors and storage capacitors may be connected to signal lines SL, SL-1, EL, and DL, an initialization voltage line VL, and a drive voltage line PL.

[0108] although Figure 6 Each of the pixels Pm and Pa is shown to be connected to the signal lines SL, SL-1, EL, and DL, the initialization voltage line VL, and the drive voltage line PL, but the present disclosure is not limited thereto. As another embodiment, at least one of the signal lines SL, SL-1, EL, and DL, the initialization voltage line VL, and the drive voltage line PL may be shared by adjacent pixels.

[0109] The plurality of thin film transistors may include a driving thin film transistor T1 , a switching thin film transistor T2 , a compensation thin film transistor T3 , a first initialization thin film transistor T4 , an operation control thin film transistor T5 , a light emission control thin film transistor T6 and a second initialization thin film transistor T7 .

[0110] The signal lines SL, SL-1, EL, and DL include a scan line SL for transmitting a scan signal Sn, a previous scan line SL-1 for transmitting a previous scan signal Sn-1 to a first initialization thin film transistor T4 and a second initialization thin film transistor T7, a light emission control line EL for transmitting a light emission control signal En to an operation control thin film transistor T5 and a light emission control thin film transistor T6, and a data line DL that crosses the scan line SL and transmits a data signal Dm. A driving voltage line PL transmits a driving voltage ELVDD to the driving thin film transistor T1, and an initialization voltage line VL transmits an initialization voltage Vint for initializing the driving thin film transistor T1 and a pixel electrode (e.g., an anode electrode).

[0111] The driving gate electrode G1 of the driving thin film transistor T1 is connected to the first storage capacitor plate Cst1 of the storage capacitor Cst, the driving source electrode S1 of the driving thin film transistor T1 is connected to the driving voltage line PL via the operation control thin film transistor T5, and the driving drain electrode D1 of the driving thin film transistor T1 is electrically connected to the pixel electrode of the organic light emitting diode OLED via the light emission control thin film transistor T6. The driving thin film transistor T1 receives the data signal Dm according to the switching operation of the switching thin film transistor T2, and converts the driving current I OLED Supply to the organic light emitting diode OLED.

[0112] A switching gate electrode G2 of the switching thin film transistor T2 is connected to the scan line SL, a switching source electrode S2 of the switching thin film transistor T2 is connected to the data line DL, and a switching drain electrode D2 of the switching thin film transistor T2 is connected to the driving source electrode S1 of the driving thin film transistor T1 and is simultaneously connected to the driving voltage line PL via the operation control thin film transistor T5. The switching thin film transistor T2 is turned on in response to a scan signal Sn transmitted through the scan line SL to perform a switching operation for transmitting a data signal Dm transmitted to the data line DL to the driving source electrode S1 of the driving thin film transistor T1.

[0113] The compensation gate electrode G3 of the compensation thin-film transistor T3 is connected to the scan line SL. The compensation source electrode S3 of the compensation thin-film transistor T3 is connected to the driving drain electrode D1 of the driving thin-film transistor T1 and is connected to the pixel electrode of the organic light-emitting diode OLED via the light-emission control thin-film transistor T6. The compensation drain electrode D3 of the compensation thin-film transistor T3 is connected to the first storage capacitor plate Cst1 of the storage capacitor Cst, the first initialization drain electrode D4 of the first initialization thin-film transistor T4, and the driving gate electrode G1 of the driving thin-film transistor T1. The compensation thin-film transistor T3 is turned on in response to the scan signal Sn transmitted via the scan line SL to electrically connect the driving gate electrode G1 and the driving drain electrode D1 of the driving thin-film transistor T1, thereby diode-connecting the driving thin-film transistor T1.

[0114] A first initialization gate electrode G4 of the first initialization thin film transistor T4 is connected to the previous scan line SL-1, a first initialization source electrode S4 of the first initialization thin film transistor T4 is connected to the second initialization drain electrode D7 of the second initialization thin film transistor T7 and the initialization voltage line VL, and a first initialization drain electrode D4 of the first initialization thin film transistor T4 is connected to the first storage capacitor plate Cst1 of the storage capacitor Cst, the compensation drain electrode D3 of the compensation thin film transistor T3, and the driving gate electrode G1 of the driving thin film transistor T1. The first initialization thin film transistor T4 is turned on in response to the previous scan signal Sn-1 transmitted through the previous scan line SL-1 to transmit the initialization voltage Vint to the driving gate electrode G1 of the driving thin film transistor T1, thereby performing an initialization operation for initializing the voltage of the driving gate electrode G1 of the driving thin film transistor T1.

[0115] The operation control gate electrode G5 of the operation control thin film transistor T5 is connected to the light emitting control line EL, the operation control source electrode S5 of the operation control thin film transistor T5 is connected to the driving voltage line PL, and the operation control drain electrode D5 of the operation control thin film transistor T5 is connected to the driving source electrode S1 of the driving thin film transistor T1 and the switching drain electrode D2 of the switching thin film transistor T2.

[0116] The light emitting control gate electrode G6 of the light emitting control thin film transistor T6 is connected to the light emitting control line EL, the light emitting control source electrode S6 of the light emitting control thin film transistor T6 is connected to the driving drain electrode D1 of the driving thin film transistor T1 and the compensation source electrode S3 of the compensation thin film transistor T3, and the light emitting control drain electrode D6 of the light emitting control thin film transistor T6 is electrically connected to the second initialization source electrode S7 of the second initialization thin film transistor T7 and the pixel electrode of the organic light emitting diode OLED.

[0117] The operation control thin film transistor T5 and the light emission control thin film transistor T6 are simultaneously turned on according to the light emission control signal En transmitted through the light emission control line EL, whereby the driving voltage ELVDD is transmitted to the organic light emitting diode OLED to allow the driving current I OLED Flow to the organic light emitting diode OLED.

[0118] A second initialization gate electrode G7 of the second initialization thin film transistor T7 is connected to the previous scan line SL-1, a second initialization source electrode S7 of the second initialization thin film transistor T7 is connected to the emission control drain electrode D6 of the emission control thin film transistor T6 and the pixel electrode of the organic light emitting diode OLED, and a second initialization drain electrode D7 of the second initialization thin film transistor T7 is connected to the first initialization source electrode S4 of the first initialization thin film transistor T4 and the initialization voltage line VL. The second initialization thin film transistor T7 is turned on according to the previous scan signal Sn-1 transmitted through the previous scan line SL-1 to initialize the pixel electrode of the organic light emitting diode OLED.

[0119] although Figure 6 The first initialization thin film transistor T4 and the second initialization thin film transistor T7 are shown as being connected to the previous scan line SL-1, but the present disclosure is not limited thereto. In another embodiment, the first initialization thin film transistor T4 may be connected to the previous scan line SL-1 and driven according to the previous scan line SL-1, and the second initialization thin film transistor T7 may be connected to a separate signal line (e.g., a subsequent scan line) and driven according to a signal transmitted to the signal line.

[0120] The second storage capacitor plate Cst2 of the storage capacitor Cst is connected to the driving voltage line PL, and the counter electrode of the organic light emitting diode OLED is connected to the second power line ELVSS. Therefore, the organic light emitting diode OLED can receive the driving current I transmitted from the driving thin film transistor T1. OLED to emit light and thus display images.

[0121] although Figure 6 It is shown that the compensation thin film transistor T3 and the first initialization thin film transistor T4 have double gate electrodes, but the compensation thin film transistor T3 and the first initialization thin film transistor T4 may have one gate electrode.

[0122] In this embodiment, the primary pixel Pm and the auxiliary pixel Pa may include the same pixel circuit PC, but are not limited thereto. The primary pixel Pm and the auxiliary pixel Pa may include their own pixel circuits PC that are different from each other. For example, the primary pixel Pm may adopt Figure 6 The pixel circuit PC, and the auxiliary pixel Pa can be used Figure 5 In this way, various modifications can be made to the main pixel Pm and the auxiliary pixel Pa.

[0123] In the following, reference will be made to Figures 7 to 9 The relationship between the first pixel defining layer 119 and the spacer 120 disposed in the main display area DA0 and the second pixel defining layer 119 ′ disposed in the sensor area SA is described in detail.

[0124] Figure 7 is with Figure 2 A schematic plan view corresponding to area A and partially showing a boundary portion between the display area and the sensor area, Figure 8 It is along Figure 7 A schematic cross-sectional view taken along line III-III', and Figure 9 It is along Figure 7 Schematic cross-sectional view taken along line II-II'.

[0125] refer to Figure 7 The display device 1 according to one embodiment of the present disclosure includes a main display area DA0 including a plurality of primary pixels Pm and a sensor area SA including a transmissive area TA and a plurality of auxiliary pixels Pa, and includes a plurality of counter electrodes 223. The counter electrodes 223 include a plurality of first counter electrodes 223A disposed corresponding to the main display area DA0 and a plurality of second counter electrodes 223B disposed corresponding to the sensor area SA, and the first counter electrodes 223A are provided to have a shape different from that of the second counter electrodes 223B. The counter electrodes 223 may be connected to each other.

[0126] Each of the first and second counter electrodes 223A and 223B may be disposed to correspond to one pixel group Pg.

[0127] At least one of the pixels Pa or Pm may be included in the pixel group Pg. Figure 7 In the embodiment, a pixel group Pg includes four pixels Pa and Pm arranged in two rows, but the present disclosure is not limited thereto. Various modifications may be made to the number and arrangement of the pixels Pa and Pm included in a pixel group Pg. For example, a pixel group Pg may include three pixels Pa and Pm arranged side by side in a row, or may include eight pixels Pa and Pm arranged in four rows. In this specification, pixels Pa and Pm may refer to sub-pixels that emit red light, green light, or blue light.

[0128] The transmissive area TA is a region where light transmittance is high due to the absence of a display element, and may be provided in a plurality in the sensor area SA. The transmissive areas TA may be arranged alternately along the first direction DR1 and / or the second direction DR2 along with the pixel groups Pg. Alternatively, the transmissive areas TA may be arranged to surround the pixel groups Pg. Alternatively, the auxiliary pixels Pa may be arranged to surround the transmissive areas TA. In this embodiment, the transmissive area TA is a region where the first and second counter electrodes 223A and 223B are not provided, and may refer to a region corresponding to the opening 223OP of the counter electrode 223 in the sensor area SA.

[0129] The size of the transmission area TA may be larger than the size of the light emitting area of ​​at least one pixel Pa or Pm. In some embodiments, the size of the transmission area TA may be equal to or larger than the size of one pixel group Pg.

[0130] The first pair of electrodes 223A and the second pair of electrodes 223B may be electrically connected to each other. A portion of the first pair of electrodes 223A and the second pair of electrodes 223B may be electrically connected to each other at a boundary between the main display area DA0 and the sensor area SA, and a plurality of first pair of electrodes 223A spaced apart from each other in the second direction DR2 may be electrically connected to the second power line ELVSS (see FIG. 1 ) of the non-display area NDA. Figure 5 and Figure 6 ) electrical connection.

[0131] In detail, the first pair electrodes 223A adjacent in the first direction DR1 among the first pair electrodes 223A may be connected to each other, and the first pair electrodes 223A adjacent in the second direction DR2 may be spaced apart from each other. However, the first pair electrodes 223A spaced apart from each other in the second direction DR2 are electrically connected to the second power line ELVSS (see FIG. 1 ) of the non-display area NDA. Figure 5 and Figure 6 ), and thus, the first pair of electrodes 223A may be electrically connected to each other.

[0132] The second pair of electrodes 223B may be arranged to overlap the pixel group Pg in the third direction DR3 along the first direction DR1 and / or the second direction DR2 by bypassing the transmission area TA. That is, it can be understood that the second pair of electrodes 223B arranged along the first direction DR1 are spaced apart from each other using the transmission area TA between the second pair of electrodes 223B, and the second pair of electrodes 223B arranged along the second direction DR2 are spaced apart from each other using the transmission area TA between the second pair of electrodes 223B. The second pair of electrodes 223B may be arranged to be electrically connected to each other in the first direction DR1 and the second direction DR2. The second pair of electrodes 223B connected to each other may be electrically connected to the second power line ELVSS (see Figure 5 and Figure 6 ).

[0133] In one embodiment, the first width W1 may be greater than the second width W2. That is, the second width W2 of the second pair of electrodes 223B disposed in the sensor area SA in the first direction DR1 is smaller than the first width W1 of the first pair of electrodes 223A disposed in the display area DA in the first direction DR1, and the spacing distance between the second pair of electrodes 223B disposed with the transmissive area TA interposed therebetween may be greater. That is, the width Wt of the transmissive area TA in the first direction DR1 is greater than the first width W1, and thus, the transmissive area TA, through which light can pass, is provided with a large size (Wt>W1>W2).

[0134] Meanwhile, a spacing distance between first pair electrodes 223A adjacent to each other in the second direction DR2 among the first pair electrodes 223A may be provided with a size much smaller than the length dt of the transmission area TA in the second direction DR2.

[0135] In the following, reference will be made to Figure 8 and Figure 9 A stacking structure of the display device 1 according to one embodiment of the present disclosure is described. Figure 8 It is along Figure 7 1 is a schematic cross-sectional view taken along line III-III' and showing a partial cross section of the display area DA, and Figure 9 It is along Figure 7 1 and 2. The schematic cross-sectional view is taken along line II-II' and shows a partial cross section of the sensor area SA.

[0136] refer to Figure 8 and Figure 9 The display device 1 according to one embodiment of the present disclosure includes a main display area DA0 and a sensor area SA. The main pixel Pm is provided in the main display area DA0, and the auxiliary pixel Pa and the transmission area TA are provided in the sensor area SA.

[0137] The main pixel Pm may include a main thin film transistor TFT, a main storage capacitor Cst, and a main organic light emitting diode OLED. The auxiliary pixel Pa may include an auxiliary thin film transistor TFT', an auxiliary storage capacitor Cst', and an auxiliary organic light emitting diode OLED'. The transmission area TA may include a transmission hole TAH corresponding to the transmission area TA.

[0138] Hereinafter, a structure in which components included in the display device 1 according to one embodiment of the present disclosure are stacked will be described.

[0139] The substrate SUB may include glass or polymer resin.

[0140] The buffer layer 111 may be located on the substrate SUB to reduce or block the penetration of particles, moisture or external air from the lower portion of the substrate SUB, and may provide a flat surface on the substrate SUB. The buffer layer 111 may include an inorganic material such as an oxide or a nitride, an organic material, or an organic / inorganic composite, and may be formed of a single layer or a multilayer structure of an inorganic material and an organic material. A barrier layer (not shown) for blocking the penetration of external air may be further included between the substrate SUB and the buffer layer 111. In some embodiments, the buffer layer 111 may be made of silicon oxide (SiO2) or silicon nitride (SiN x The buffer layer 111 may be provided such that a first buffer layer 111 a and a second buffer layer 111 b are stacked.

[0141] In the sensor area SA, the lower electrode layer BSM may be disposed between the first buffer layer 111a and the second buffer layer 111b. In other embodiments, the lower electrode layer BSM may be disposed between the substrate SUB and the first buffer layer 111a. The lower electrode layer BSM may be disposed below the auxiliary thin film transistor TFT' to prevent the characteristics of the auxiliary thin film transistor TFT' from being degraded by light emitted from the component CP, etc.

[0142] In addition, the lower electrode layer BSM can be connected to the line GCL provided in another layer through a contact hole. The lower electrode layer BSM can be supplied with a constant voltage or signal from the line GCL. For example, the lower electrode layer BSM can be supplied with a driving voltage ELVDD or a scan signal Sn. Since the lower electrode layer BSM is supplied with a constant voltage or signal, the probability of occurrence of electrostatic discharge can be significantly reduced. The lower electrode layer BSM may include aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), molybdenum (Mo), titanium (Ti), tungsten (W) and / or copper (Cu). The lower electrode layer BSM may be a single layer or a multilayer of the above materials.

[0143] A main thin-film transistor (TFT) and an auxiliary thin-film transistor (TFT') may be disposed on the buffer layer 111. The main thin-film transistor (TFT) includes a first semiconductor layer (A1), a first gate electrode (G1), a first source electrode (S1), and a first drain electrode (D1). The auxiliary thin-film transistor (TFT') includes a second semiconductor layer (A2), a second gate electrode (G2), a second source electrode (S2), and a second drain electrode (D2). The main thin-film transistor (TFT) may be connected to the main organic light-emitting diode (OLED) in the display area (DA) to drive the main organic light-emitting diode (OLED). The auxiliary thin-film transistor (TFT') may be connected to the auxiliary organic light-emitting diode (OLED') in the sensor area (SA) to drive the auxiliary organic light-emitting diode (OLED').

[0144] The first semiconductor layer A1 and the second semiconductor layer A2 may be disposed on the buffer layer 111 and may include polycrystalline silicon. In another embodiment, the first semiconductor layer A1 and the second semiconductor layer A2 may include amorphous silicon. In yet another embodiment, the first semiconductor layer A1 and the second semiconductor layer A2 may include an oxide of at least one material selected from the group consisting of indium (In), gallium (Ga), tin (Sn), zirconium (Zr), vanadium (V), hafnium (Hf), cadmium (Cd), germanium (Ge), chromium (Cr), titanium (Ti), and zinc (Zn). The first semiconductor layer A1 and the second semiconductor layer A2 may include a channel region and a source region and a drain region doped with impurities.

[0145] The second semiconductor layer A2 may overlap the lower electrode layer BSM with the second buffer layer 111 b interposed therebetween.

[0146] The first gate insulating layer 112 may be provided to cover the first semiconductor layer A1 and the second semiconductor layer A2. The first gate insulating layer 112 may include silicon oxide (SiO2), silicon nitride (SiN x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), or zinc oxide (ZnO2). The first gate insulating layer 112 may be a single layer or multiple layers including the above inorganic insulating materials.

[0147] The first gate electrode G1 and the second gate electrode G2 are disposed on the first gate insulating layer 112 to overlap the first semiconductor layer A1 and the second semiconductor layer A2, respectively. The first gate electrode G1 and the second gate electrode G2 may include molybdenum (Mo), aluminum (Al), copper (Cu), and / or titanium (Ti), etc., and may be formed of a single layer or multiple layers. For example, the first gate electrode G1 and the second gate electrode G2 may be a single layer of Mo.

[0148] The second gate insulating layer 113 may be provided to cover the first gate electrode G1 and the second gate electrode G2. The second gate insulating layer 113 may include silicon oxide (SiO2), silicon nitride (SiN x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2) or zinc oxide (ZnO2). The second gate insulating layer 113 may be a single layer or multiple layers including the above inorganic insulating materials.

[0149] A first upper electrode CE2 of the main storage capacitor Cst and a second upper electrode CE2 ′ of the auxiliary storage capacitor Cst′ may be disposed on the second gate insulating layer 113 .

[0150] In the display area DA, the first upper electrode CE2 may overlap the first gate electrode G1 therebelow. The overlapping first gate electrode G1 and the first upper electrode CE2 (with the second gate insulating layer 113 interposed therebetween) may form a main storage capacitor Cst. That is, the first gate electrode G1 may function as the first lower electrode CE1 of the main storage capacitor Cst.

[0151] In the sensor area SA, the second upper electrode CE2' may overlap the second gate electrode G2 thereunder. The overlapping second gate electrode G2 and the second upper electrode CE2' (with the second gate insulating layer 113 interposed therebetween) may form an auxiliary storage capacitor Cst'. The second gate electrode G2 may function as a second lower electrode CE1' of the auxiliary storage capacitor Cst'.

[0152] The first upper electrode CE2 and the second upper electrode CE2' may include aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), molybdenum (Mo), titanium (Ti), tungsten (W) and / or copper (Cu), and may be a single layer or a multilayer of the above materials.

[0153] The interlayer insulating layer 115 may be formed to cover the first upper electrode CE2 and the second upper electrode CE2'. The interlayer insulating layer 115 may include silicon oxide (SiO2), silicon nitride (SiN x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2) or zinc oxide (ZnO2).

[0154] The source electrodes S1 and S2 and the drain electrodes D1 and D2 may be disposed on the interlayer insulating layer 115. The source electrodes S1 and S2 and the drain electrodes D1 and D2 may include a conductive material including molybdenum (Mo), aluminum (Al), copper (Cu), and / or titanium (Ti), and may be formed of a multilayer or single layer including the above materials. For example, the source electrodes S1 and S2 and the drain electrodes D1 and D2 may have a multilayer structure of Ti / Al / Ti.

[0155] The planarization layer 117 may be provided to cover the source electrodes S1 and S2 and the drain electrodes D1 and D2 . The planarization layer 117 may have a flat upper surface so that the first and second pixel electrodes 221 and 221 ′ provided on the planarization layer 117 may be formed to be flat.

[0156] The planarization layer 117 may be formed of a single layer or multiple layers made of an organic material or an inorganic material. The planarization layer 117 may include a general polymer (such as benzocyclobutene (BCB), polyimide, hexamethyldisiloxane (HMDSO), polymethyl methacrylate (PMMA) or polystyrene (PS)), a polymer derivative having a phenol group, an acrylic polymer, an imide polymer, an aryl ether polymer, an amide polymer, a fluorine polymer, a paraxylene polymer, a vinyl alcohol polymer or a mixture thereof. The planarization layer 117 may include silicon oxide (SiO2), silicon nitride (SiN x ), silicon oxynitride (SiON), aluminum oxide (Al2O3), titanium oxide (TiO2), tantalum oxide (Ta2O5), hafnium oxide (HfO2), or zinc oxide (ZnO2). After forming the planarization layer 117, chemical mechanical polishing may be performed to provide a flat upper surface.

[0157] The planarization layer 117 includes an opening exposing either the first source electrode S1 or the first drain electrode D1 of the main thin film transistor TFT, and the first pixel electrode 221 may contact the first source electrode S1 or the first drain electrode D1 through the opening to be electrically connected to the main thin film transistor TFT.

[0158] In addition, the planarization layer 117 includes an opening exposing any one of the second source electrode S2 and the second drain electrode D2 of the auxiliary thin film transistor TFT′, and the second pixel electrode 221′ may contact the second source electrode S2 or the second drain electrode D2 through the opening to be electrically connected to the auxiliary thin film transistor TFT′.

[0159] The first pixel electrode 221 and the second pixel electrode 221' may include a conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), indium gallium oxide (IGO) or aluminum zinc oxide (AZO). In another embodiment, the first pixel electrode 221 and the second pixel electrode 221' may include a reflective layer containing silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr) or a compound thereof. In yet another embodiment, the first pixel electrode 221 and the second pixel electrode 221' may further include a film formed of ITO, IZO, ZnO or In2O3 above / below the above-mentioned reflective layer. In some embodiments, the first pixel electrode 221 and the second pixel electrode 221' may be formed by a stacked structure of ITO / Ag / ITO.

[0160] In the main display area DA0, the first pixel defining layer 119 may cover the edge of each of the first pixel electrodes 221. The first pixel defining layer 119 overlaps each of the first pixel electrodes 221 and includes a first opening OP1 that defines the light emitting area of ​​the primary pixel Pm. The first pixel defining layer 119 may prevent arcing at the edge of the first pixel electrode 221 by increasing the distance between the edge of the first pixel electrode 221 and the first counter electrode 223A above the first pixel electrode 221.

[0161] The first pixel defining layer 119 may be a black pixel defining layer (black PDL). That is, the first pixel defining layer 119 may include a black material that does not transmit light. For example, the first pixel defining layer 119 may include carbon black and an organic insulating material.

[0162] like Figure 2 and Figure 3 As shown in FIG, connection lines 146 for transmitting data signals to signal lines 136 provided in the display area DA may be provided to reduce the non-display area NDA. However, due to the difference in length and area between the connection lines 146, a pattern may be visible. When a black pixel defining layer is used as the first pixel defining layer 119, deterioration in display quality due to reflection, diffraction, and scattering of light caused by the connection lines 146 can be minimized.

[0163] The first pixel defining layer 119 may include a spacer 120. The spacer 120 may be provided to protrude from the upper surface of the first pixel defining layer 119 in the thickness direction (e.g., the third direction DR3). The spacer 120 may have any one of the shapes of a pyramid, a prism, a truncated cone, a cylinder, a hemisphere, and a hemi-ellipsoid.

[0164] The spacer 120 may include at least one transparent organic material selected from benzocyclobutene (BCB), polyimide (PI), polyamide (PA), acrylic resin, and phenol resin.

[0165] In the sensor area SA, the second pixel defining layer 119' may cover the edge of each of the second pixel electrodes 221'. The second pixel defining layer 119' overlaps each of the second pixel electrodes 221' and includes a second opening OP2 that defines the light-emitting area of ​​the auxiliary pixel Pa. The second pixel defining layer 119' may prevent arcing at the edge of the second pixel electrode 221' by increasing the distance between the edge of the second pixel electrode 221' and the second counter electrode 223B above the second pixel electrode 221'.

[0166] However, unlike the first pixel defining layer 119 formed in the main display area DA0, the second pixel defining layer 119' formed in the sensor area SA may not be a black pixel defining layer (black PDL). That is, when a certain light transmittance or higher is required, the second pixel defining layer 119' may be formed of a transparent material.

[0167] A transmission area TA in which no display element is provided may be provided in the sensor area SA. The transmission area TA may be understood as an area through which light / signals emitted from and / or incident on the component CP are transmitted.

[0168] Component CP can be an electronic component that uses light or sound. For example, component CP can be an optical sensor or a camera. Generally, to use an optical sensor as a proximity sensor, a light transmittance of approximately 15% is required, while to recognize an iris or face, a light transmittance of approximately 85% is required. Furthermore, to use a camera to photograph a subject, a light transmittance of approximately 95% is required.

[0169] Therefore, the second pixel defining layer 119' may be formed simultaneously with the spacer 120 formed in the main display area DA0 and of the same material as the spacer 120. That is, the second pixel defining layer 119' may include at least one transparent organic material selected from benzocyclobutene (BCB), polyimide (PI), polyamide (PA), acrylic resin, and phenol resin.

[0170] When the second pixel defining layer 119' is formed of the same transparent organic material as the transparent organic material of the spacer 120 formed in the main display area DA0, the transmittance of light emitted from and incident on the component CP can be obtained at a specific value or higher. In addition, when the spacer 120 is formed in the main display area DA0, the second pixel defining layer 119' of the sensor area SA can be formed simultaneously with the spacer 120, thereby eliminating the need to increase the manufacturing process.

[0171] The first functional layer 222a may be disposed on the pixel electrodes 221 and 221' exposed by the openings OP1 and OP2 of the first pixel defining layer 119 and the second pixel defining layer 119'. The first functional layer 222a may extend to the upper surface of the first pixel defining layer 119 and the second pixel defining layer 119'. The first functional layer 222a may be a single layer or multiple layers. The first functional layer 222a may be a hole transport layer (HTL) having a single-layer structure. Alternatively, the first functional layer 222a may include a hole injection layer (HIL) and a hole transport layer (HTL). The first functional layer 222a may be formed integrally to correspond to the main pixel Pm included in the display area DA and the auxiliary pixel Pa included in the sensor area SA.

[0172] The first and second light emitting layers 222b and 222b' formed to correspond to the first and second pixel electrodes 221 and 221', respectively, are disposed on the first functional layer 222a. The first and second light emitting layers 222b and 222b' may include a polymer material or a monomer material and may emit red, green, blue, or white light.

[0173] The second functional layer 222c may be formed on the first light-emitting layer 222b and the second light-emitting layer 222b'. The second functional layer 222c may be a single layer or multiple layers. The second functional layer 222c may include an electron transport layer (ETL) and / or an electron injection layer (EIL). The second functional layer 222c may be integrally formed to correspond to the primary pixel Pm included in the display area DA and the auxiliary pixel Pa included in the sensor area SA. The first functional layer 222a and / or the second functional layer 222c may be omitted.

[0174] The spacer 120 may be provided on the second functional layer 222c. The spacer 120 may be formed of the same material as the first pixel defining layer 119. That is, the spacer 120 may include at least one organic material selected from benzocyclobutene (BCB), polyimide (PI), polyamide (PA), acrylic resin, and phenol resin.

[0175] The counter electrode 223 is provided on the second functional layer 222c. The counter electrode 223 may include a conductive material having a low work function. For example, the counter electrode 223 may include a (semi) transparent layer containing silver (Ag), magnesium (Mg), aluminum (Al), platinum (Pt), palladium (Pd), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), lithium (Li), calcium (Ca), or an alloy thereof. Alternatively, the counter electrode 223 may further include a layer such as ITO, IZO, ZnO, or In2O3 on the (semi) transparent layer including the above materials.

[0176] In this embodiment, as described above, the counter electrode 223 includes the first counter electrode 223A disposed in the main display area DA0 and the second counter electrode 223B disposed in the sensor area SA.

[0177] Meanwhile, in the sensor area SA, some of the second counter electrodes 223B may be spaced apart from each other with the transmission area TA interposed therebetween. According to one embodiment, at least a portion of the second counter electrodes 222B may not be disposed in the transmission area TA.

[0178] When the gap space between the second counter electrodes 223B can be understood as the opening 223OP of the counter electrode 223, the opening 223OP may be a transmissive hole TAH through which light passes. The width Wt of the transmissive hole TAH may be greater than the width Wa of the light emitting area defined by the second opening OP2 of the second pixel defining layer 119'.

[0179] Since the case where the transmission hole TAH is formed means that a member such as the opposing electrode 223 corresponding to the transmission area TA is removed, the light transmittance in the transmission area TA may be significantly improved.

[0180] Although not shown, a capping layer may be formed on the counter electrode 223 to improve light extraction efficiency while protecting the counter electrode 223. The capping layer may include LiF. Alternatively, the capping layer may include an inorganic insulating material such as silicon nitride and / or an organic insulating material.

[0181] Hereinafter, other embodiments will be described. In the following embodiments, descriptions of elements identical to those of the previously described embodiments will be omitted or simplified, and the following descriptions will be based on differences from the previously described embodiments.

[0182] Figure 10 It is along Figure 7 Schematic cross-sectional view taken along line IV-IV'.

[0183] refer to Figure 8 and Figure 10 , this embodiment is similar to Figure 9 The embodiment shown in FIG. 1 is different in that at least a portion of the plurality of second pixel defining layers 119 ″ formed in the sensor area SA may further include a bank portion BK and a protrusion portion PT.

[0184] In more detail, in the main display area DA0, the first pixel defining layer 119 may cover an edge of each of the first pixel electrodes 221. The first pixel defining layer 119 overlaps each of the first pixel electrodes 221 and includes a first opening OP1 defining a light emitting area of ​​the main pixel Pm.

[0185] The first pixel defining layer 119 may be a black pixel defining layer (black PDL). That is, the first pixel defining layer 119 may include a black material that does not transmit light. For example, the first pixel defining layer 119 may include carbon black and an organic insulating material.

[0186] The first pixel defining layer 119 may include a spacer 120. The spacer 120 may be provided to protrude in the thickness direction from the upper surface of the first pixel defining layer 119. The spacer 120 may have any one of the shapes of a pyramid, a prism, a truncated cone, a cylinder, a hemisphere, and a hemi-ellipsoid.

[0187] The spacer 120 may include at least one transparent organic material selected from benzocyclobutene (BCB), polyimide (PI), polyamide (PA), acrylic resin, and phenol resin.

[0188] In the sensor area SA, the second pixel defining layer 119 ″ may cover an edge of each of the second pixel electrodes 221 ′. The second pixel defining layer 119 ″ overlaps with each of the second pixel electrodes 221 ′ and includes a second opening OP2 that defines a light emitting area of ​​the auxiliary pixel Pa. In addition, at least a portion of the second pixel defining layer 119 ″ may further include a bank portion BK and a protrusion portion PT.

[0189] The bank portion BK may be formed of the same material as the first pixel defining layer 119 formed in the main display area DA0. That is, the bank portion BK may include a black material that does not transmit light. For example, the bank portion BK may include carbon black and an organic insulating material.

[0190] The protrusion portion PT may be provided to overlap the bank portion BK in the third direction DR3. That is, the protrusion portion PT may be formed to cover the upper surface of the bank portion BK and protrude in the third direction DR3. According to one embodiment, the distance from the upper surface of the substrate SUB to the upper surface of the protrusion portion PT may be equal to the distance from the upper surface of the substrate SUB to the upper surface of the spacer 120 formed in the main display area DA0.

[0191] The protruding portion PT of the second pixel defining layer 119″ may be formed of the same material as that of the spacer 120 formed in the main display area DA0. That is, the protruding portion PT of the second pixel defining layer 119″ may include at least one transparent organic material selected from benzocyclobutene (BCB), polyimide (PI), polyamide (PA), acrylic resin, and phenol resin.

[0192] In the following, reference will be made to Figures 11 to 16 An embodiment in which the opening area OA is included in the sensor area SA_1 is described.

[0193] Figure 11 is a perspective view showing a display device according to one embodiment. Figures 12a to 12c is a schematic cross-sectional view showing a display device according to one embodiment. Figure 13 is a plan view showing lines (signal lines) located in one area of ​​a display panel according to one embodiment. Figures 14 to 16 is a cross-sectional view illustrating a cross section near an opening region of a display device according to one embodiment.

[0194] refer to Figure 11 , display device 1_1 and Figure 1The display device 1 shown in FIG. 1 is different in that the display device 1_1 further includes an opening area OA in a partial area of ​​the sensor area SA_1 .

[0195] In more detail, the display device 1_1 includes an opening area OA at least partially surrounded by the sensor area SA_1. Figure 11 The opening area OA is shown to be completely surrounded by the sensor area SA_1. The non-display area NDA may further include a fifth non-display area NDA5 surrounding the opening area OA. The fifth non-display area NDA5 may completely surround the opening area OA, and the sensor area SA_1 may completely surround the fifth non-display area NDA5.

[0196] Figures 12a to 12c is a schematic cross-sectional view showing a display device 1_1 according to an embodiment of the present disclosure, and can be used with Figure 11 It corresponds to the cross section taken along line V-V'.

[0197] refer to Figure 12a The display device 1_1 may include a display panel PN and a component CP corresponding to an opening area OA of the display panel PN.

[0198] The display panel PN may include a substrate SUB, a display element layer DE including a display element disposed on the substrate SUB, a thin film encapsulation layer TFE as an encapsulation member covering the display element layer DE, and an input sensing layer 400 for sensing a touch input. Although not shown, components such as a transparent window and an anti-reflection member including a polarizer and a retarder or a color filter and a black matrix may be further disposed on the input sensing layer 400.

[0199] The input sensing layer 400 may be provided in the display area DA. The input sensing layer 400 may acquire coordinate information based on external input (e.g., a touch event). The input sensing layer 400 may include sensing electrodes (or touch electrodes) and signal lines (traces) connected to the sensing electrodes.

[0200] The process of forming the input sensing layer 400 may be performed continuously after the process of forming the planarization layer 610 to be described later, or may be performed continuously after the process of forming the thin film encapsulation layer TFE. Therefore, an adhesive member may not be interposed between the input sensing layer 400 and the thin film encapsulation layer TFE.

[0201] The planarization layer 610 is provided in the fifth non-display area NDA5. The planarization layer 610 includes an organic insulating material. The planarization layer 610 may include a photoresist (e.g., a negative photoresist or a positive photoresist), or may include the same material as the organic encapsulation layer of the thin film encapsulation layer TFE, or may include the same material as one of the insulating layers of the input sensing layer 400 to be described later, or may include other various organic insulating materials.

[0202] like Figure 12a As shown in , the display panel PN may include an opening PN_H corresponding to the opening area OA and passing through the display panel PN. The substrate SUB, the display element layer DE, the thin film encapsulation layer TFE, the input sensing layer 400, and the planarization layer 610 may include first to fifth openings SUB_H, DE_H, TFE_H, 400H, and 610H corresponding to the opening area OA, respectively.

[0203] The first opening SUB_H can be formed to pass through the upper and lower surfaces of the substrate SUB, the second opening DE_H can be formed to pass through the uppermost layer from the lowermost layer of the display element layer DE, the third opening TFE_H can be formed to pass through the thin film encapsulation layer TFE, the fourth opening 400H can be formed to pass through the uppermost layer from the lowermost layer of the input sensing layer 400, and the fifth opening 610H can be formed to pass through the upper and lower surfaces of the planarization layer 610.

[0204] The opening area OA is where the component CP is disposed, and the component CP can be as shown in FIG. Figure 12a , and may be disposed below the display panel PN to correspond to the opening area OA as shown in FIG. Figure 12b , is shown to be disposed in the opening PN_H to overlap with the side of the opening PN_H of the display panel PN.

[0205] The component CP may include an electronic component. For example, the component CP may be an electronic component that uses light or sound. For example, the electronic component may include a sensor for receiving and using light (such as an infrared sensor), a camera for receiving light to capture an image, a sensor for outputting and sensing light or sound to measure distance or identify fingerprints, etc., a small lamp for outputting light, or a speaker for outputting sound. In the case of light-based electronic components, light of various wavelengths such as visible light, infrared light, and ultraviolet light can be used. In some embodiments, the opening area OA can be understood as a transmission area that can output light and / or sound from the component CP to the outside or transmit light and / or sound moving from the outside toward the electronic component.

[0206] like Figure 12a and Figure 12bAs shown in , the substrate SUB may include a first opening SUB_H corresponding to the opening area OA. Alternatively, as Figure 12c As shown in , the substrate SUB may not include the first opening SUB_H. The component CP may be disposed under the display panel PN as shown by the dotted line, or may be disposed in the opening PN_H of the display panel PN as shown by the solid line. The component CP disposed under the display panel PN may be an electronic element using light.

[0207] Figure 13 is a plan view showing a portion of a display panel according to one embodiment, and shows lines (eg, signal lines) located in a fifth non-display area.

[0208] refer to Figure 13 , the auxiliary pixels Pa and the transmission areas TA may be alternately disposed in the sensor area SA_1 based on the opening area OA, and the fifth non-display area NDA5 may be located between the opening area OA and the sensor area SA_1.

[0209] The auxiliary pixels Pa may be spaced apart from each other based on the opening area OA. The auxiliary pixels Pa may be spaced apart from each other up and down based on the opening area OA, or may be spaced apart from each other from left to right based on the opening area OA.

[0210] Signal lines adjacent to the opening area OA among the signal lines supplying signals to the auxiliary pixels Pa may bypass the opening area OA. Some of the data lines DL passing through the sensor area SA_1 may extend in the second direction DR2 to supply data signals to the auxiliary pixels Pa arranged above and below with the opening area OA interposed between the auxiliary pixels Pa, and may bypass along edges of the opening area OA in the fifth non-display area NDA5.

[0211] Some of the scan lines SL passing through the sensor area SA_1 may extend in the first direction DR1 to provide scan signals to the auxiliary pixels Pa arranged from left to right with the opening area OA interposed therebetween, and may detour along edges of the opening area OA in the fifth non-display area NDA5.

[0212] refer to Figure 8 、 Figure 9 and Figure 14 , this embodiment is similar to Figure 9 The embodiment shown in FIG_1 is different in that an opening area OA is further included in a partial area of ​​the sensor area SA_1 , and a fifth non-display area NDA5 disposed to surround the opening area OA further includes a light leakage preventing wall PW for preventing light leakage from occurring.

[0213] In more detail, in the main display area DA0, the first pixel defining layer 119 may cover an edge of each of the first pixel electrodes 221. The first pixel defining layer 119 overlaps each of the first pixel electrodes 221 and includes a first opening OP1 defining a light emitting area of ​​the main pixel Pm.

[0214] The first pixel defining layer 119 may be a black pixel defining layer (black PDL). That is, the first pixel defining layer 119 may include a black material that does not transmit light. For example, the first pixel defining layer 119 may include carbon black and an organic insulating material.

[0215] The first pixel defining layer 119 may include a spacer 120. The spacer 120 may be provided to protrude in the thickness direction from the upper surface of the first pixel defining layer 119. The spacer 120 may have any one of the shapes of a pyramid, a prism, a truncated cone, a cylinder, a hemisphere, and a hemi-ellipsoid.

[0216] The spacer 120 may include at least one transparent organic material selected from benzocyclobutene (BCB), polyimide (PI), polyamide (PA), acrylic resin, and phenol resin.

[0217] The groove G may be formed in a portion of the substrate SUB in the fifth non-display area NDA5 of the sensor area SA_1. For example, the groove G may be formed by removing a portion of the substrate SUB. The groove G may be formed along the opening area OA to have a concentric circular shape in a plane.

[0218] The groove G may have an undercut structure in which a width of a portion passing through the substrate SUB is greater than a width of a portion passing through the inorganic insulating layer (eg, the buffer layer 111 and the first gate insulating layer 112 ).

[0219] The light leakage preventing wall PW may be provided to overlap the groove G in the third direction DR3. According to one embodiment, the light leakage preventing wall PW may be provided to cover the inner surface of the groove G and may have a structure protruding on a peripheral area of ​​the groove G in the third direction DR3.

[0220] The light leakage prevention wall PW may be formed of the same material as the first pixel defining layer 119 of the main display area DA0. That is, the light leakage prevention wall PW may include a black material that does not transmit light. For example, the light leakage prevention wall PW may include carbon black and an organic insulating material.

[0221] The second pixel defining layer 119 ′ may cover an edge of each of the second pixel electrodes 221 ′. The second pixel defining layer 119 ′ overlaps each of the second pixel electrodes 221 ′ and includes a second opening OP2 defining a light emitting region of the auxiliary pixel Pa.

[0222] However, unlike the first pixel defining layer 119 formed in the main display area DA0, the second pixel defining layer 119' formed in the sensor area SA_1 may not be a black pixel defining layer (black PDL). That is, when a certain light transmittance or higher is required, the second pixel defining layer 119' may be formed of a transparent material.

[0223] Therefore, the second pixel defining layer 119' may be formed of the same material as the spacer 120 formed in the main display area DA0. That is, the second pixel defining layer 119' may include at least one transparent organic material selected from benzocyclobutene (BCB), polyimide (PI), polyamide (PA), acrylic resin, and phenol resin.

[0224] The organic light emitting diode OLED may be covered by a thin film encapsulation layer TFE and may be protected from external particles or moisture. The thin film encapsulation layer TFE may include at least one organic encapsulation layer and at least one inorganic encapsulation layer. Figure 14 The thin film encapsulation layer TFE is shown to include a first inorganic encapsulation layer TFE1 and a second inorganic encapsulation layer TFE3, and an organic encapsulation layer TFE2 interposed between the first and second inorganic encapsulation layers TFE1 and TFE3. In another embodiment, the number of organic encapsulation layers and the number of inorganic encapsulation layers and the stacking order of the organic and inorganic encapsulation layers can be changed.

[0225] The first inorganic encapsulation layer TFE1 and the second inorganic encapsulation layer TFE3 may include one or more inorganic insulating materials (such as aluminum oxide, titanium oxide, tantalum oxide, hafnium oxide, zinc oxide, silicon oxide, silicon nitride, and silicon oxynitride), and may be formed by chemical vapor deposition (CVD), etc. The organic encapsulation layer TFE2 may include a polymer material. The polymer material may include acrylic resin, epoxy resin, polyimide, polyethylene, etc.

[0226] The organic encapsulation layer TFE2 may be formed by coating a monomer on the substrate SUB and then hardening it, and a partition wall 500 may be provided in the fifth non-display area NDA5 to control flow of the monomer and ensure thickness of the monomer (or organic encapsulation layer).

[0227] For example, the partition wall 500 may include an organic insulating material and may be a stacked structure of first to third sub-wall portions 510, 520, and 530. The first to third sub-wall portions 510, 520, and 530 may be formed of the same material as the interlayer insulating layer 115, the planarization layer 117, and the second pixel defining layer 119', respectively.

[0228] The second inorganic encapsulation layer TFE3 may be disposed on the organic encapsulation layer TFE2. A planarization layer 610 may be located on the second inorganic encapsulation layer TFE3 disposed between the opening area OA and the partition wall 500. The planarization layer 610 may cover the area of ​​the fifth non-display area NDA5 not covered by the organic encapsulation layer TFE2, thereby improving the flatness of the display panel PN near the opening area OA. Therefore, when components such as an anti-reflection member or a window are disposed on the display panel PN, the planarization layer 610 may prevent these components from being unable to be connected to the display panel PN, being separated from the display panel PN, or being spaced apart from the display panel PN.

[0229] The planarization layer 610 includes an organic insulating material. The planarization layer 610 may include a photoresist (eg, a negative photoresist or a positive photoresist).

[0230] The planarization layer 610 may be located on the thin film encapsulation layer TFE. The planarization layer 610 may be spatially separated from the organic encapsulation layer TFE2 by the second inorganic encapsulation layer TFE3. For example, the organic encapsulation layer TFE2 and the planarization layer 610 may be spatially separated from each other, as in the case where the planarization layer 610 is disposed on the second inorganic encapsulation layer TFE3 and the organic encapsulation layer TFE2 is disposed below the second inorganic encapsulation layer TFE3.

[0231] The organic encapsulation layer TFE2 and the planarization layer 610 may not be in direct contact with each other. The planarization layer 610 may have a thickness of 5 μm or greater. A portion of the planarization layer 610 may overlap with the organic encapsulation layer TFE2. The first end 610E1 of the planarization layer 610 may extend onto the organic encapsulation layer TFE2 to overlap with the organic encapsulation layer TFE2. The second end 610E2 of the planarization layer 610 faces the opening area OA. The second end 610E2 may be located on the same line as the end SUB_E of the substrate SUB.

[0232] refer to Figure 15 , this embodiment is similar to Figure 14 The embodiment shown in FIG. 1 is different in that the second pixel defining layer 119 ′ includes a first region 119A and a second region 119B.

[0233] In more detail, the first region 119A of the second pixel defining layer 119 ′ may be formed to overlap an edge region of the transmission area TA in the third direction DR3 , that is, the first region 119A may be formed not to overlap a central region of the transmission area TA in the third direction DR3 .

[0234] The second region 119B of the second pixel defining layer 119' may be formed in the central area of ​​the transmission area TA to overlap a portion of the first region 119A in the third direction DR3. Upper surfaces of the first region 119A and the second region 119B may be disposed on the same plane.

[0235] The first region 119A may be formed of the same material as the first pixel defining layer 119 of the main display area DA0. That is, the first region 119A may include a black material that does not transmit light. For example, the first region 119A may include carbon black and an organic insulating material.

[0236] The second region 119B may be formed simultaneously with the spacer 120 of the main display area DA0 and of the same material as the spacer 120. That is, the second region 119B may include at least one transparent organic material selected from benzocyclobutene (BCB), polyimide (PI), polyamide (PA), acrylic resin, and phenol resin.

[0237] refer to Figure 16 , this embodiment is similar to Figure 14 The embodiment shown in FIG_1 is different in that at least a portion of the plurality of second pixel defining layers 119 ′ formed in the transmission area TA of the sensor area SA_1 further includes a bank portion BK_1 and a protrusion portion PT_1 .

[0238] In more detail, in the sensor area SA_1, the second pixel defining layer 119' may cover the edge of each of the second pixel electrodes 221'. The second pixel defining layer 119' overlaps each of the second pixel electrodes 221' and includes a second opening OP2 that defines the light emitting area of ​​the auxiliary pixel Pa. At least a portion of the second pixel defining layer 119' may further include a bank portion BK_1 and a protrusion portion PT_1.

[0239] The bank portion BK_1 may be formed of the same material as the first pixel defining layer 119 formed in the main display area DA0. That is, the bank portion BK_1 may include a black material that does not transmit light. For example, the bank portion BK_1 may include carbon black and an organic insulating material.

[0240] The protrusion portion PT_1 may be provided to overlap the bank portion BK_1 in the third direction DR3. That is, the protrusion portion PT_1 may be formed to cover the upper surface of the bank portion BK_1 and protrude in the third direction DR3. According to one embodiment, the distance from the upper surface of the substrate SUB to the upper surface of the protrusion portion PT_1 may be equal to the distance from the upper surface of the substrate SUB to the upper surface of the spacer 120 formed in the main display area DA0.

[0241] The protruding portion PT_1 of the second pixel defining layer 119' may be formed of the same material as the spacer 120 formed in the main display area DA0. That is, the protruding portion PT_1 of the second pixel defining layer 119' may include at least one transparent organic material selected from benzocyclobutene (BCB), polyimide (PI), polyamide (PA), acrylic resin, and phenol resin.

[0242] Although the present disclosure has been described based on the embodiments of the present disclosure, this is merely exemplary and is not intended to limit the present disclosure. It will be understood by those skilled in the art that various modifications and applications may be made to the embodiments without departing from the essential features of the embodiments according to the present disclosure. For example, each component shown in the embodiments of the present disclosure may be implemented by modification. In addition, the differences associated with such modifications and applications should be interpreted as being included within the scope of the present disclosure as defined in the appended claims.

Claims

1. A display device, comprising: a substrate comprising a display area including primary pixels, a sensor area including auxiliary pixels and a transmissive area, and an opening area at least partially surrounded by the sensor area, and comprising a non-display area between the sensor area and the opening area; a first anode electrode included in the primary pixel; a first pixel defining layer defining an opening partially exposing the first anode electrode; a spacer, disposed on the first pixel defining layer; a second anode electrode included in the auxiliary pixel; as well as a second pixel defining layer defining an opening partially exposing the second anode electrode; Wherein, the display device further comprises: a light leakage preventing wall, arranged in the non-display area and formed along the opening area, The first pixel defining layer and the light leakage preventing wall are formed simultaneously from the same black material that does not transmit light, and The second pixel defining layer is formed of a transparent organic material different from the black material of the first pixel defining layer, and the transparent organic material is at least one selected from polyimide, polyamide, acrylic resin, and phenol resin.

2. The display device according to claim 1, wherein The first pixel defining layer and the light leakage preventing wall include carbon black and an organic insulating material.

3. The display device according to claim 1, wherein The spacer and the second pixel defining layer include the same transparent organic material.

4. The display device according to claim 1, further comprising: component, disposed below the transmission area, Wherein, the component includes at least one of an infrared sensor, a visible light sensor and an acoustic sensor.

5. The display device according to claim 1, wherein A size of one of the transmission areas is larger than a size of a light emitting area of ​​the auxiliary pixel. The display device according to claim 1 , wherein: The number of the auxiliary pixels per unit area is smaller than the number of the main pixels per unit area.

7. The display device according to claim 1, further comprising: a thin film encapsulation layer, covering the display area and the sensor area, The thin film encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked sequentially.

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