Display device and method of manufacturing the same

Abstract

A display device and a manufacturing method thereof. A display device includes a display panel including a display area from which an image is output, and the display area includes a camera area overlapping a camera disposed below a back surface of the display panel. The display device provides an imaging function implemented by the camera. The camera area includes a unit pixel area for displaying an image and a transmission area for transmitting light. Accordingly, a separate area overlapping the camera and not displaying an image does not need to occur in the display area. Accordingly, an increase in a bezel width and deformation of the display area due to the camera can be prevented.

Description

Technical Field

[0001] This disclosure relates to a display device including a camera and a method for manufacturing the display device. Background Technology

[0002] With the development of the information society, various portable smart devices such as laptops, tablet PCs, smartphones, and smartwatches are widely used. Typically, these portable devices not only have image display capabilities but also various data generation functions. The ability to generate image data using a camera is a well-known and crucial function for evaluating the performance of portable smart devices.

[0003] Therefore, the display device provided as a smart device may include a display panel for image display function and a camera for image data generation function.

[0004] The display panel may include signal lines or electrode patterns made of a light-shielding material. To prevent the camera's sensitivity from being degraded due to the light-shielding material, the camera may be positioned in a non-display area outside the display area of ​​the display panel. In this case, there is a problem that the width of the display device's bezel may increase due to the presence of the camera.

[0005] Alternatively, to prevent an increase in bezel width, the camera can be positioned on the display surface of the display panel and may overlap with a portion of the display area. In this case, due to the camera's arrangement, the display area of ​​the display panel may be deformed into a rectangular shape that differs from the typical screen shape for image data. Therefore, there are limitations in improving user convenience. Summary of the Invention

[0006] The purpose of this disclosure is to provide a display device with a camera, wherein an increase in bezel width and distortion of the display area due to the camera can be prevented.

[0007] The uses of this disclosure are not limited to the purposes described above. Other purposes and advantages not mentioned in this disclosure may be understood based on the following description and may be more clearly understood based on embodiments according to this disclosure. Furthermore, it will be readily understood that the purposes and advantages of this disclosure can be achieved using the means and combinations thereof shown in the claims.

[0008] According to an example of this disclosure, a display device is provided including a display panel, the display panel including a display area, wherein the display area includes a camera area overlapping with a camera disposed below the back surface of the display panel. This display device can provide imaging functionality using a camera.

[0009] The display area comprises multiple sub-pixel regions, wherein at least two adjacent sub-pixel regions correspond to a unit pixel region. The camera region of the display area also includes multiple transmissive regions arranged alternately with the at least two unit pixel regions. That is, the camera region includes unit pixel regions for displaying images and transmissive regions for transmitting light through them. Therefore, there is no need for separate areas in the display area that overlap with the camera and do not display images. Thus, increases in bezel width and distortion of the display area due to the camera can be prevented.

[0010] In this respect, the display panel includes a dam corresponding to the periphery of each of the plurality of sub-pixel regions, and a separator disposed above the dam and corresponding to each of the plurality of transmissive regions. This separator allows for increased transmittance of the transmissive regions.

[0011] A display device according to an embodiment of the present disclosure includes a display panel having a display area, and the display area includes a camera area overlapping with a camera disposed below the back surface of the display panel. The camera area includes unit pixel areas and transmissive areas arranged alternately with each other, and the display panel includes a separator disposed above the embankment and corresponding to the transmissive area.

[0012] Display devices with this configuration may include cameras that provide imaging capabilities.

[0013] Furthermore, since the camera area overlapping the camera in the display area of ​​the display panel includes a transmissive area, external light can pass through the display panel and be transmitted to the camera via the transmissive area. As a result, the sensing capability of the camera located below the back of the display panel can be prevented from deteriorating. In addition, since the camera area overlapping the camera includes a unit pixel area, it is possible to prevent an increase in bezel width and distortion of the display area caused by the camera.

[0014] The effects of this disclosure are not limited to those described above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description. Attached Figure Description

[0015] Figure 1 This is an example of the front of a display device according to an embodiment of the present disclosure.

[0016] Figure 2 This is a diagram illustrating an example of a display device according to an embodiment of the present disclosure.

[0017] Figure 3 It is shown that... Figure 2 A diagram showing an example of the equivalent circuit corresponding to a sub-pixel region of the display area.

[0018] Figure 4 It shows the setting Figure 1 A diagram of sub-pixel regions within the general area of ​​the display area.

[0019] Figure 5 It is shown Figure 4 A diagram of an example of I-I'.

[0020] Figure 6 It is shown Figure 1 The diagram shows the sub-pixel regions and transmission regions arranged in the camera region within the display area.

[0021] Figure 7 It shows the setting Figure 1 An example diagram of signal lines in the camera area of ​​the display area.

[0022] Figure 8 It is shown Figure 6 The diagram shows an example of II-II'.

[0023] Figure 9 It shows the corresponding Figure 5 Transmittance in each band of path A and corresponding to Figure 8 A graph of transmittance in each band of path B.

[0024] Figure 10 This is a diagram illustrating a method for manufacturing a display device according to an embodiment of the present disclosure.

[0025] Figures 11 to 20 It shows the basis respectively. Figure 10 The diagram illustrates the processing steps in the process. Detailed Implementation

[0026] See below for reference. Figure 1 The advantages and features of this disclosure, as well as the methods for achieving these advantages and features, will become apparent from the detailed description of the embodiments described below. However, this disclosure is not limited to the embodiments disclosed below, but can be implemented in various different forms. Therefore, these embodiments are set forth only to make this disclosure complete and to fully inform those skilled in the art to which this disclosure pertains, and this disclosure is limited only by the scope of the claims.

[0027] The shapes, dimensions, scales, angles, quantities, etc., disclosed in the accompanying drawings used to describe embodiments of this disclosure are exemplary, and this disclosure is not limited thereto. The same reference numerals denote the same elements herein. Furthermore, for the sake of simplicity, descriptions and details of well-known steps and elements have been omitted. Moreover, numerous specific details are set forth in the following detailed description of this disclosure to provide a thorough understanding of it. However, it will be understood that this disclosure can be practiced without these specific details. In other instances, well-known methods, processes, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of this disclosure.

[0028] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the singular forms “a” and “an” are also intended to include the plural forms unless the context clearly indicates otherwise. It will also be understood that, when used in this specification, the terms “comprising,” “including,” and “containing” specify the presence of the stated features, integers, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, operations, elements, components, and / or portions thereof. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. When preceding a list of elements, expressions such as “at least one of” may modify the entire list of elements and may not modify individual elements of the list. In the interpretation of numerical values, errors or tolerances may occur even without explicit description.

[0029] Furthermore, it will be understood that when a first element or layer is referred to as existing “on” a second element or layer, the first element may be directly disposed on the second element or indirectly disposed on the second element if a third element or layer is disposed between the first and second elements or layers. It will be understood that when an element or layer is referred to as being “connected to” or “attached to” another element or layer, it may be directly on, connected to, or attached to another element or layer, or one or more intermediate elements or layers may exist. Furthermore, it will be understood that when an element or layer is referred to as being “between” two elements or layers, it may be the only element or layer between the two elements or layers, or one or more intermediate elements or layers may exist.

[0030] In descriptions of temporal relationships (e.g., the temporal sequence between two events, such as "after", "next", "before", etc.), another event may occur between the two events unless it is indicated that "directly after", "directly following", or "directly before".

[0031] It will be understood that while the terms “first,” “second,” “third,” etc., may be used herein to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are used to distinguish one element, component, region, layer, or portion from another. Therefore, without departing from the spirit and scope of this disclosure, the first element, component, region, layer, or portion described below may be referred to as the second element, component, region, layer, or portion.

[0032] Features of the various embodiments of this disclosure can be combined partially or completely with each other, and can be technically related to or operable on each other. Embodiments can be implemented independently of each other, or can be implemented together in an associated relationship.

[0033] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which the inventive concept pertains. It will also be understood that terms such as those defined in common dictionaries will be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and will not be interpreted in an idealized or overly formal sense, unless expressly defined herein.

[0034] In the following description, a display device and a method for manufacturing a display device according to embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0035] First, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 A display device according to an embodiment of the present disclosure is described.

[0036] Figure 1 This is an example of the front of a display device according to an embodiment of the present disclosure.

[0037] like Figure 1 As shown, the display device DD according to an embodiment of the present disclosure can be implemented as a smart device such as a smartphone. The display device DD includes a display panel (not shown) and a camera (not shown) with imaging capabilities, the display panel including a display area 10 with image display capabilities.

[0038] In one example, display area 10 may define the front of display device DD.

[0039] Furthermore, a camera (not shown) can generate image data of objects in front of the display device DD. In this context, a camera refers to a device consisting of sensors that detect light. Alternatively, optical sensors such as CCDs (charge-coupled devices) and infrared sensors can be used instead of a camera.

[0040] A camera (not shown) may be positioned below the back of a display panel (not shown) that includes the display area 10. That is, the camera (not shown) overlaps with a portion of the display area 10.

[0041] Therefore, the display area 10 includes a general area 11 that does not overlap with the camera (not shown) and a camera area 12 that overlaps with the camera.

[0042] A camera (not shown) detects the amount of light in each area in front of it and generates image data based on the detected amount.

[0043] Camera area 12 transmits light directed to a camera (not shown) while displaying an image. Camera area 12 has a structure in which unit pixel areas for displaying the image and transmissive areas for transmitting light to be directed to the camera (not shown) are arranged alternately. In other words, the resolution of unit pixel areas in camera area 12 is lower than the resolution of unit pixel areas in ordinary area 11. This will be described in detail below.

[0044] As described above, the display device DD includes a display panel for displaying images.

[0045] Figure 2 This is a diagram illustrating an example of a display device according to an embodiment of the present disclosure. Figure 3 It is shown that... Figure 2 A diagram showing an example of the equivalent circuit corresponding to a sub-pixel region in the display area.

[0046] like Figure 2 As shown, the display device DD includes a display panel 20 having a display area 10, and a gate driver 21, a data driver 22, and a timing controller 23 for providing signals to the signal lines GL and DL of the display panel 20.

[0047] The display panel 20 includes a display area 10 for displaying images. Multiple sub-pixel areas SPA can be defined within the display area 10.

[0048] Each sub-pixel region SPA emits light corresponding to one color.

[0049] In a plurality of sub-pixel regions SPA, at least two adjacent sub-pixel regions SPA correspond to a unit pixel region.

[0050] That is, at least two sub-pixel regions corresponding to a unit pixel region correspond to at least two colors. Therefore, each unit pixel region emits light of various colors by combining colors emitted from at least two sub-pixel regions included in each unit pixel region. At this point, the at least two colors can include red, green, and blue. Alternatively, the unit color can also include white.

[0051] The display panel 20 includes signal lines GL and DL that provide signals for driving each sub-pixel region SPA. Specifically, the display panel 20 includes a gate line GL that provides a scan signal SCAN and a data line DL that provides a data signal VDATA.

[0052] In addition, when the display panel 20 includes light-emitting elements corresponding to each sub-pixel region, the display panel 20 may also include first and second driving power lines for providing first and second driving power supplies VDD and VSS for driving the light-emitting elements, respectively.

[0053] The display device DD also includes a gate driver 21, a data driver 22, and a timing controller 23 to drive the display panel 20.

[0054] The timing controller 23 rearranges the externally input digital video data RGB to match the resolution of the display panel 20, and provides the rearranged digital video data RGB' to the data driver 22.

[0055] Based on timing signals such as vertical synchronization signal Vsync, horizontal synchronization signal Hsync, dot clock signal DCLK, and data enable signal DE, timing controller 23 provides data control signal DDC to control the operation timing of data driver 22, and provides gate control signal GDC to control the operation timing of gate driver 21.

[0056] Based on the gate control signal GDC, the gate driver 21 sequentially provides a scan signal SCAN to multiple gate lines GL corresponding to multiple horizontal rows corresponding to multiple sub-pixel regions SPA during a frame period. That is, the gate driver 21 provides a scan signal SCAN to the gate line GL corresponding to each horizontal row during each horizontal period of each horizontal row in a frame period. The horizontal row includes sub-pixel regions SPA arranged in a horizontal row in the multiple sub-pixel regions SPA.

[0057] Data driver 22 converts the rearranged digital video data RGB' into analog data voltage based on the data control signal DDC. Based on the rearranged digital video data RGB', data driver 22 provides data signal VDATA to data line DL during each horizontal cycle, corresponding to each sub-pixel region SPA included in each horizontal row of display panel 20.

[0058] like Figure 3 As shown, each sub-pixel region SPA includes an organic light-emitting element (OLED) and a component driving circuit DC that provides a driving signal to the OLED. The component driving circuit DC may include a driving thin-film transistor (DT), a switching thin-film transistor (ST), and a storage capacitor (Cst). However, this is merely an example. Alternatively, each sub-pixel region SPA may also include a compensation circuit (not shown) to compensate for degradation (not shown) of at least one of the driving thin-film transistor (DT) or the OLED associated with the component driving circuit DC. The compensation circuit may include at least one thin-film transistor for sensing degradation or providing a reference power (not shown).

[0059] An organic light-emitting element (OLED) includes first and second electrodes (e.g., an anode and a cathode) and a layer made of organic material disposed between the first and second electrodes.

[0060] A driving thin-film transistor DT is connected in series to an organic light-emitting element OLED and is disposed between a first driving power line VDDL that provides a first driving power VDD and a second driving power line VSSL that provides a second driving power VSS, wherein the second driving power VSS has a lower potential than the first driving power VDD.

[0061] The switching thin-film transistor ST is positioned between the data line DL, which provides the data signal VDATA for each sub-pixel region SPA, and the gate electrode of the driving thin-film transistor DT.

[0062] The storage capacitor Cst is positioned between the first node ND1 and the second node ND2.

[0063] The first node ND1 refers to the contact point between the gate electrode of the switching thin-film transistor ST and the driving thin-film transistor DT. The second node ND2 refers to the contact point between the driving thin-film transistor DT and the organic light-emitting element OLED.

[0064] The operation of the DC drive circuit for this component is as follows.

[0065] When the switching thin-film transistor ST is turned on based on the scan signal SCAN of the gate line GL, the data signal VDATA of the data line DL is provided to the gate electrode of the driving thin-film transistor DT and the storage capacitor Cst connected to the first node ND1.

[0066] The storage capacitor Cst is charged with the data signal VDATA provided to the first node ND1.

[0067] Based on the data signal VDATA provided to the first node ND1 and the charging voltage of the storage capacitor Cst, the driving thin-film transistor DT is turned on. At this point, the turned-on driving thin-film transistor DT allows the driving current corresponding to the data signal VDATA to be provided to the second node ND2, i.e., the organic light-emitting element OLED.

[0068] Next, the general area 11 and camera area 12 of the display area 10 according to embodiments of the present disclosure will be described.

[0069] Figure 4 It shows the setting Figure 1 A diagram of sub-pixel regions within the general area of ​​the display area. Figure 5 It is shown Figure 4 A diagram of an example of I-I'.

[0070] like Figure 4 As shown, in the general area 11 of the display area 10 of the display panel 20 that does not overlap with the camera (not shown), a plurality of unit pixel regions UPA are arranged in a matrix form defined in the first and second directions (X and Y). That is, the plurality of unit pixel regions UPA arranged in the general area 11 are adjacent to each other in the first and second directions (X and Y).

[0071] Each unit pixel region UPA includes at least two sub-pixel regions SPA1, SPA2, SPA3, and SPA4 corresponding to at least two colors. At this point, the at least two colors may include red, green, and blue. Alternatively, the at least two colors may also include white.

[0072] At least two sub-pixel regions SPA1, SPA2, SPA3, and SPA4 included in each unit pixel region UPA can correspond to different colors. Alternatively, at least two of the at least two sub-pixel regions SPA1, SPA2, SPA3, and SPA4 included in each unit pixel region UPA can correspond to the same color, while the remainder can correspond to different colors.

[0073] In one example, such as Figure 4 As shown, in each unit pixel region UPA, which includes at least two sub-pixel regions SPA1, SPA2, SPA3 and SPA4, the first sub-pixel region SPA1 can correspond to red, the second sub-pixel region SPA2 can correspond to blue, and the remaining third sub-pixel region SPA3 and fourth sub-pixel region SPA4 can correspond to green.

[0074] The second sub-pixel region SPA2, corresponding to blue light, can have the widest width among the at least two sub-pixel regions SPA1, SPA2, SPA3, and SPA4 included in each unit pixel region UPA. Furthermore, the third sub-pixel region SPA3 and the fourth sub-pixel region SPA4, corresponding to green light, can be identical, and can have the smallest width among the at least two sub-pixel regions SPA1, SPA2, SPA3, and SPA4 included in each unit pixel region UPA.

[0075] Furthermore, sub-pixel regions arranged in a row in the second direction Y can correspond to the same color.

[0076] Furthermore, the first sub-pixel region SPA1 and the second sub-pixel region SPA2, corresponding to red and blue respectively, are arranged alternately along the first direction X, while the third sub-pixel region SPA3 and the fourth sub-pixel region SPA4, corresponding to green, are arranged in a row along the second direction Y.

[0077] like Figure 5 As shown, in the general area 11 that does not overlap with the camera, the display panel 20 may include a first sub-pixel area SPA1 and a second sub-pixel area SPA2 that are alternately arranged in the first direction X.

[0078] Display panel 20 includes: a plurality of thin-film transistors (TFTs) Figure 3 The transistor array substrate 210 (DT and ST); a dam 220 and a plurality of organic light-emitting elements 230 disposed above the transistor array substrate 210; and a plurality of insulating material films 241, 242, 243 and 244 covering the organic light-emitting elements 230.

[0079] The transistor array substrate 210 includes: a substrate 211 defining a display area 10, a driving thin film transistor DT disposed above the substrate 211 and corresponding to each of the sub-pixel areas SPA1 and SPA2, and a planarization film 212 covering the driving thin film transistor DT.

[0080] The embankment 220 is disposed above the planarization film 212 and corresponds to the periphery of each of the plurality of sub-pixel regions SPA1 and SPA2.

[0081] Multiple organic light-emitting elements 230 disposed above the transistor array substrate 210 correspond to multiple sub-pixel regions SPA1 and SPA2.

[0082] The display panel 20 includes: a plurality of first electrodes 231 disposed above a planarization film 212 and corresponding to a plurality of sub-pixel regions SPA1 and SPA2; a light-emitting layer 232 disposed above the first electrodes 231 and the embankment 220; and a second electrode 233 disposed above the light-emitting layer 232.

[0083] The embankment 220 covers the edge of each of the plurality of first electrodes 231.

[0084] The light-emitting layer 232 covers the first electrode 231 and the embankment 220.

[0085] The light-emitting layer 232 may be made of an organic light-emitting material. In one example, the light-emitting layer 232 may include a hole transport layer, at least one light-emitting layer, and an electron transport layer. Alternatively, the light-emitting layer 232 may also include at least one of a hole injection layer or an electron injection layer.

[0086] In the region where the light-emitting layer 232 is disposed between the first electrode 231 and the second electrode 233, light is emitted from the light-emitting layer 232 through the driving current between the first electrode 231 and the second electrode 233.

[0087] To prevent the light-emitting layer 232 from easily deteriorating due to moisture or oxygen, multiple organic light-emitting elements 230 can be sealed with multiple insulating material films 241, 242, 243 and 244.

[0088] In one example, the display panel 20 may further include a first protective film 241 covering the second electrode 233 in a planarized manner and a second protective film (insulating material film) 242 covering the first protective film (insulating material film) 241 in a planarized manner.

[0089] In addition, the display panel 20 may also include a third protective film (insulating material film) 243 disposed above the second protective film 242.

[0090] In addition, the display panel 20 may also include a passivation film 240 disposed between the second electrode 233 and the first protective film 241. The passivation film 240 may be made of an inorganic insulating material.

[0091] The first protective film 241 can be made of an organic insulating material, with a thickness sufficient to achieve a flattened top surface without bending. On the other hand, the second electrode 233 is made of an inorganic conductive material. Providing a passivation film 240 made of an inorganic insulating material between the second electrode 233 and the first protective film 241 facilitates the fixation of the first protective film 241.

[0092] Figure 6 It is shown Figure 1 The diagram shows the sub-pixel regions and transmission regions arranged in the camera region within the display area. Figure 7It shows the setting Figure 1 An example diagram of signal lines in the camera area of ​​the display area. Figure 8 It is shown Figure 6 The diagram shows an example of II-II'.

[0093] like Figure 6 As shown, the camera area 12 overlapping with the camera (not shown) in the display area 10 of the display panel 20 may include at least two unit pixel areas UPA and a plurality of transmission areas TA arranged alternately with the at least two unit pixel areas UPA.

[0094] In one example, such as Figure 6 As shown, in camera region 12, unit pixel region UPA and transmission region TA can be arranged in a matrix and can be arranged alternately one after another.

[0095] Alternatively, although not shown separately, in camera region 12, unit pixel region UPA and transmission region TA can be arranged alternately with each other in at least two pairs and can be arranged in a matrix.

[0096] However, this is merely an example. Camera region 12 may include at least two unit pixel regions UPA corresponding to a resolution sufficient to achieve image display functionality. Depending on the resolution of camera region 12, two adjacent unit pixel regions UPA arranged in camera region 12 may be spaced apart from each other by at least one transmission region TA.

[0097] The transmission area TA refers to the area used to transmit light to a camera (not shown) located below the back of the display panel 20. That is, light can be transmitted to the camera (not shown) through the transmission area TA of the display panel 20.

[0098] In the transmission region TA, a separator 250 can be set to improve transmittance.

[0099] Furthermore, in order to improve the transmittance of the transmission region TA, the light-shielding material of the electrodes and signal lines constituting the sub-pixel region SPA may not be placed in the transmission region TA.

[0100] like Figure 7 As shown, the data line DL extending along the second direction Y can bypass the transmission region TA.

[0101] In one example, such as Figure 7 As shown, the first data line DL1 and the second data line DL2, corresponding to the first sub-pixel region SPA1 and the third sub-pixel region SPA3 respectively, can be set on one side of the first direction X of the unit pixel region UPA. Figure 7(on the left side), while the third data line DL3 and the fourth data line DL4, which correspond to the second sub-pixel region SPA2 and the fourth sub-pixel region SPA4 respectively, can be set on the other side of the first direction X of the unit pixel region UPA ( Figure 7 (Right side).

[0102] The first data line DL1 and the second data line DL2 bend into the unit pixel region UPA so as not to intrude into one side of the unit pixel region UPA in the first direction X. Figure 7 The adjacent transmission region TA (to the left of).

[0103] Similarly, the third data line DL3 and the fourth data line DL4 bend into the unit pixel region UPA so as not to intrude into the other side of the unit pixel region UPA in the first direction X. Figure 7 The right side of the adjacent transmission region TA.

[0104] Therefore, since the signal line DL, made of light-shielding material, is not located in the transmission area TA, factors that degrade the transmittance of the transmission area TA can be eliminated. That is, the amount of light guided to the camera (not shown) can be prevented from decreasing due to the signal line DL being made of light-shielding material. Therefore, while maintaining the image display function in the display area 10, the performance of the camera (not shown) can be easily improved.

[0105] like Figure 8 As shown, the display device DD according to an embodiment of the present disclosure includes a display panel 20 and a camera 30. The display panel 20 includes a display area 10 on which images are displayed, and the camera 30 is disposed below the back of the display panel 20 and overlaps with a camera area 12 which is part of the display area 10.

[0106] Display area 10 includes multiple sub-pixel areas SPA. At least two adjacent sub-pixel areas in the multiple sub-pixel areas SPA correspond to a unit pixel area UPA.

[0107] like Figure 1 As shown, display area 10 includes areas not connected to the camera ( Figure 8 The overlapping general area 11 of 30) and the camera ( Figure 8 (30) Overlapping camera areas 12.

[0108] In general region 11, multiple unit pixel regions UPA are arranged in a row to form a matrix.

[0109] Camera region 12 includes at least two unit pixel regions UPA and a plurality of transmission regions TA arranged alternately with the at least two unit pixel regions UPA. That is, in camera region 12, the plurality of unit pixel regions UPA and the plurality of transmission regions TA can be arranged in a matrix and can be arranged alternately with at least one of them.

[0110] The display panel 20 includes a dam 220 corresponding to the periphery of each of the plurality of sub-pixel regions SPA1 and SPA2, and a separator 250 disposed above the dam 220 and corresponding to each of the plurality of transmissive regions TA.

[0111] The display panel 20 also includes a transistor array substrate 210, which includes a substrate 211 defining a display area 10, a plurality of thin-film transistors DT disposed above the substrate 211, and a planarization film 212 covering the plurality of thin-film transistors DT. The display panel 20 also includes a plurality of first electrodes 231 disposed above the planarization film 212 of the transistor array substrate 210 and corresponding to a plurality of sub-pixel regions SPA1 and SPA2. The display panel 20 also includes a light-emitting layer 232 disposed above the first electrodes 231 and a dam 220 and spaced apart from the separator 250, and a second electrode 233 disposed above the light-emitting layer 232. In this respect, the dam 220 covers the edge of each of the plurality of first electrodes 231.

[0112] In addition, the display panel 20 may also include a first protective film 241 covering the second electrode 233 and a second protective film 242 covering the separator 250 and the first protective film 241.

[0113] In addition, the display panel 20 may also include a third protective film 243 disposed above the second protective film 242.

[0114] Furthermore, the display panel 20 may also include a passivation film 240 disposed between each of the second electrode 233 and the separator 250 and the first protective film 241. The passivation film 240 is made of an inorganic insulating material to allow for easy fixation of the first protective film 241, which is made of an organic insulating material.

[0115] Due to the etching ratio between the light-emitting layer 232, the second electrode 233, the passivation film 240 and the first protective film 241, the separator 250 protrudes toward the second protective film 242.

[0116] In addition, the top surface of the separator 250 is in direct contact with the second protective film 242.

[0117] The separator 250 can be configured such that the edge of its top surface can protrude beyond the edge of its bottom surface, and the side connecting the top and bottom surfaces can be inclined at an angle of 90 degrees or less relative to the extension of the bottom surface.

[0118] In other words, the separator 250 can have an inverted conical cross-section.

[0119] In one example, the width RTW (inverted cone width) by which the edge of the top surface of the separator 250 protrudes beyond the edge of the bottom surface of the separator 250 can be 1.5 μm or greater.

[0120] The light-emitting layer 232 can be separated by the inverted conical separator 250. The second electrode 233 can also be separated by the inverted conical separator 250. Therefore, when the light-emitting layer 232 and the second electrode 233 disposed above the separator 250 are removed, the light-emitting layer 232 and the second electrode 233 may not be disposed in the transmission region TA. This prevents a decrease in the transmittance of the transmission region TA due to the light-emitting layer 232 and the second electrode 233.

[0121] Furthermore, the refractive index of the separator 250 can be within the range between the refractive index of the second protective film 242 covering the separator 250 and the refractive index of the substrate 211 facing the camera 30. In this way, the separator 250 is included in the light path from the outside to the camera 30 through the display panel 20, thereby improving transmittance.

[0122] In one example, when the second protective film 242 is made of an organic insulating material with a refractive index of 1.53 and the substrate 211 is made of polyimide (PI) with a refractive index of 1.64, the spacer 250 may be made of an insulating material with a refractive index in the range of 1.53 to 1.64. For example, the spacer 250 may be made of a negative photoresist.

[0123] Therefore, the transmittance of the transmission area TA of the display panel 20 can be increased due to the separator 250.

[0124] Figure 9 It shows the corresponding Figure 5 Transmittance in each band of path A and corresponding to Figure 8 A graph of transmittance in each band of path B.

[0125] like Figure 5 As shown, path A corresponds to the periphery of each sub-pixel region SPA and includes a light-emitting layer 232 and a second electrode 233 disposed above the embankment 220.

[0126] like Figure 8As shown, path B corresponds to the transmission region TA of camera region 12 and includes a separator 250 disposed above the embankment 220. In other words, with Figure 5 Path A is different from path B, which does not include the light-emitting layer 232 and the second electrode 233.

[0127] Therefore, it can be confirmed that, Figure 9 As shown, in the 400nm to 700nm band corresponding to visible light, the transmittance of path B is higher than that of path A.

[0128] As described above, path B corresponding to the transmission region TA does not include the light-emitting layer 232 and the second electrode 233, and includes a separator 250 made of an insulating material with a refractive index between the refractive index of the second protective film 242 and the refractive index of the substrate 211. Therefore, the transmittance of the camera region 12, including the transmission region TA, can be improved compared to the transmittance of the general region 11. As a result, the light detection sensitivity of the camera 30 disposed below the camera region 12 can be prevented from being degraded due to the display panel 20.

[0129] Therefore, the display device DD according to the embodiments of the present disclosure includes a camera 30 disposed below the display panel 20 and overlapping a portion of the display area 10.

[0130] The camera region 12 of the display area 10 overlapping with the camera 30 includes unit pixel regions UPA and transmission regions TA arranged alternately to form a matrix. Therefore, external light can be transmitted to the camera 30 through the transmission region TA of the display panel 20, enabling the display device DD to provide the imaging function achieved by the camera 30 and the image display function across the entire display area 10. That is, distortion of the display area 10 and an increase in bezel width due to the camera 30 can be prevented. Therefore, user convenience when using the image display function can be improved.

[0131] In addition, the display panel 20 of the display device DD includes a separator 250 corresponding to the transmissive region TA.

[0132] The separator 250 has an inverted conical cross-section and is disposed on the embankment 220. Therefore, each of the light-emitting layer 232 and the second electrode 233 is separated by the separator 250, and the top surface of the separator 250 is in direct contact with the second protective film 242. That is, the light-emitting layer 232 and the second electrode 233 are not disposed in the transmission region TA. Therefore, the number of interfaces with rapidly changing refractive index in the transmission region TA is less than that in the sub-pixel region SPA and its periphery, thus improving the transmittance of the transmission region TA.

[0133] Furthermore, the separator 250 is made of a material with a refractive index selected between the refractive index of the second protective film 242 covering the separator 250 and the refractive index of the substrate 211 facing the camera 30. This separator 250 allows for further improvement in the transmittance of the transmission region TA.

[0134] Next, we will refer to Figure 10 and Figures 11 to 20 A method for manufacturing a display device according to embodiments of the present disclosure is described.

[0135] Figure 10 This is a diagram illustrating a method for manufacturing a display device according to an embodiment of the present disclosure.

[0136] Figures 11 to 20 It shows the basis respectively. Figure 10 The diagram illustrates the processing steps in the process.

[0137] like Figure 10 As shown, a method for manufacturing a display device according to an embodiment of the present disclosure includes: step S10 of preparing a thin-film transistor array substrate 210 comprising a plurality of thin-film transistors DT disposed above a substrate 211 defining a display area 10 and a planarization film 212 covering the plurality of thin-film transistors DT; step S21 of providing a plurality of first electrodes 231 on the planarization film 212, each corresponding to a plurality of sub-pixel areas SPA included in the display area 10; and step S22 of providing a dam 220 on the planarization film 212, each corresponding to the periphery of each of the plurality of sub-pixel areas SPA and covering the edge of each of the first electrodes 231; Step S23: Setting a separator 250 on the embankment 220 corresponding to each of the plurality of transmission regions TA included in the camera region 12 which is part of the display region 10; Step S24: Setting a light-emitting material film covering the first electrode 231, the embankment 220 and the separator 250, a conductive material film covering the light-emitting material film and a first insulating material film covering the conductive material film; Step S25: Setting a second insulating material film covering the first insulating material film in a planarized manner; and Step S26: Removing the portion of each of the second insulating material film, the first insulating film, the conductive material film and the light-emitting material film disposed above the separator 250.

[0138] In step S26, the portion of each of the second insulating material film, the first insulating material film, the conductive material film, and the luminescent material film disposed above the separator 250 is removed, and the luminescent layer 232, the second electrode 233, the passivation film 240, and the first protective film 241 are disposed. At this time, the top surface of the separator 250 is not covered by the passivation film 240 and the first protective film 241.

[0139] The method for manufacturing a display device according to an embodiment of the present disclosure may further include, after step S26 of removing the portion of each of the second insulating material film, the first insulating material film, the conductive material film, and the luminescent material film disposed above the separator 250, step S27 of providing a second protective film 242 that covers the separator 250 and the first protective film 241 in a planarized manner.

[0140] In step S27 of setting the second protective film 242, the top surface of the separator 250 directly contacts the second protective film.

[0141] Furthermore, the method for manufacturing a display device according to embodiments of the present disclosure may also include step S28 of setting a third protective film 243 covering the second protective film 242.

[0142] Furthermore, the method for manufacturing a display device according to embodiments of the present disclosure may also include step S30 of setting a camera 30 overlapping with the camera region 12 on the bottom surface of the thin-film transistor array substrate 210.

[0143] like Figure 11 As shown, step S10 of fabricating thin-film transistor array substrate 210 may include: fabricating substrate 211 defining display area 10, setting thin-film transistors DT corresponding to each of sub-pixel areas SPA1 and SPA2 on substrate 211, and setting planarization film 212 covering thin-film transistors DT.

[0144] The thin-film transistor array substrate 210 also includes multiple signal lines ( Figure 3 The signal lines (GL, DL, and VDDL) define multiple sub-pixel regions SPA in the display area 10 and provide signals to each of the sub-pixel regions SPA1 and SPA2.

[0145] The thin-film transistor array substrate 210 may also include a switching thin-film transistor corresponding to each sub-pixel region SPA. Figure 3 ST), driving thin-film transistor (ST) Figure 3 DT) and storage capacitors ( Figure 3 (Cst in the middle).

[0146] All multiple signal lines ( Figure 3 GL, DL and VDDL), switching thin-film transistors ( Figure 3 ST), driving thin-film transistor (ST) Figure 3 DT) and storage capacitors ( Figure 3 The Cst in the middle is covered with a planarization film 212.

[0147] Display area 10 includes multiple sub-pixel regions arranged in a matrix structure. Figure 4 The general area 11 of SPA1, SPA2, SPA3 and SPA4) and the camera area 12 in which a transmission area TA is provided between adjacent sub-pixel areas SPA1 and SPA2 to transmit light that will be guided to the camera.

[0148] like Figure 12 As shown, a first electrode 231 corresponding to each of the sub-pixel regions SPA1 and SPA2 is disposed above the planarization film 212 (S21).

[0149] The first electrode 231 is connected via a contact hole through the planarization film 212 to a thin-film transistor DT corresponding to each of the sub-pixel regions SPA1 and SPA2.

[0150] like Figure 13 As shown, a dam 220 corresponding to the periphery of each of the sub-pixel regions SPA1 and SPA2 is disposed above the planarization film 212 (S22).

[0151] In each of the sub-pixel regions SPA1 and SPA2, the embankment 220 covers the edge of the first electrode 231.

[0152] Subsequently, step S23, which involves setting a separator 250 above the embankment 220 corresponding to the plurality of transmission regions TA included in the camera region 12, includes: setting a photoresist material film made of a negative photoresist covering the first electrode 231 and the embankment 220 in a planarized manner; patterning the photoresist material film; and developing the photoresist material film to provide the separator 250.

[0153] like Figure 14 As shown, a photoresist material film 301 made of negative photoresist is provided, which covers the first electrode 231 and the embankment 220 in a planarized manner.

[0154] like Figure 15 As shown, when the patterned mask 310 is disposed on the photoresist material film 301, light is irradiated onto the photoresist material film 301 to pattern the photoresist material film 301.

[0155] The patterned mask 310 may include a light-transmitting portion 311 that corresponds to the transmission region TA and transmits light, and a light-blocking portion 312 that blocks light.

[0156] At this point, the photoresist film 301 has a negative shape, therefore, the portion 302 of the photoresist film 301 exposed to light transmitted through the patterned mask 310 is photocured.

[0157] Furthermore, due to the scattered or diffused light at the edge of the light transmission portion 311, the cured portion 302 of the photoresist material film 301 may have an inverted conical cross-section.

[0158] In this respect, the cross-sectional shape of the cured portion 302 of the photoresist film 301 can be adjusted according to the irradiation time and intensity of the light irradiating the photoresist film 301. In one example, when the irradiation time of the light is longer than a threshold or the intensity of the light is greater than a threshold, the cross-section of the cured portion 302 of the photoresist film 301 can be formed into a shape that is closer to a rectangle than an inverted cone.

[0159] like Figure 16 As shown, the remaining photoresist material film 301, excluding the cured portion 302, is removed by developing.

[0160] As a result, the separator 250, corresponding to the transmission region TA and positioned above the embankment 220, is configured as a cured photoresist material film. Figure 16 (302 in the middle).

[0161] like Figure 17 As shown, a light-emitting material film 321 covering the first electrode 231, the embankment 220 and the separator 250, a conductive material film 322 covering the light-emitting material film 321, and a first insulating material film 323 covering the conductive material film 322 are arranged vertically in sequence (S24).

[0162] In addition, a second insulating material film 324 is provided to cover the first insulating material film 323 (S25).

[0163] The luminescent material film 321 can be made of organic luminescent material. The luminescent material film 321 is separated by a separator 250 having an inverted conical cross-section.

[0164] The separator 250 is configured such that its top surface protrudes beyond its bottom surface, and its sides are inclined. Therefore, during the deposition process, the luminescent material film 321 may not be disposed in the gap between the sides and bottom surface of the separator 250. Thus, the luminescent material film 321 is separated by the separator 250.

[0165] The conductive material film 322 is disposed above the light-emitting material film 321 and is separated by the separator 250 as in the light-emitting material film 321.

[0166] The first insulating material film 323 can be made of inorganic insulating materials such as SiO2 and SiNx.

[0167] The second insulating material film 324 may be made of an organic insulating material, which is allowed to be thick enough to cover the steps caused by the separator 250 in a flattening manner.

[0168] That is, the second insulating material film 324 has a flattened top surface and covers the separator 250.

[0169] like Figure 18 As shown, in the etching process on the front side, the second insulating material film disposed above the separator 250 is removed. Figure 18 324 in the middle), the first insulating material film ( Figure 18 323 in the middle), conductive material film ( Figure 18 322) and luminescent material film ( Figure 18 (321)(S26)

[0170] As a result, the top surface of the separator 250 was exposed and not covered by the second insulating material film. Figure 18 324 in the middle), the first insulating material film ( Figure 18 323 in the middle), conductive material film ( Figure 18 322) and luminescent material film ( Figure 18 (321) Coverage.

[0171] The luminescent material film is retained after etching process S26 to expose the top surface of the separator 250. Figure 18 321) is used as a light-emitting layer 232 disposed above the first electrode 231 and the embankment 220.

[0172] The remaining conductive material film after etching process S26 ( Figure 18 322) is used as a second electrode 233 disposed above the light-emitting layer 232.

[0173] The remaining first insulating material film after etching process S26 ( Figure 18 323) is used as a passivation film 240 disposed above the second electrode 233.

[0174] The remaining second insulating material film after etching process S26 ( Figure 18 324) is used as a first protective film 241 to cover the passivation film 240 in a planarized manner.

[0175] At this point, etching process S26 is performed until the top surface of the separator 250 is exposed. Therefore, due to the etching ratio between the materials, the top surface of the separator 250 protrudes beyond the first protective film 241.

[0176] That is, such as Figure 19 As shown, a portion of the side of the partition 250 adjacent to the top surface may not be covered by the first protective film 241.

[0177] Next, as Figure 20As shown, a second protective film 242 is provided covering the separator 250 and the first protective film 241 (S27).

[0178] The second protective film 242 may be made of an organic insulating material, with a thickness sufficient to cover the separator 250 in a planar manner. In one example, the second protective film 242 may be made of the same organic insulating material as the first protective film 241.

[0179] To further enhance the sealing effect and prevent moisture and oxygen from entering, a third protective film 243 (S28) can be further provided to cover the second protective film 242.

[0180] Unlike the second protective film 242, the third protective film 243 can be made of inorganic insulating material. Therefore, with the increase in the number of interfaces, the seal can be more robust.

[0181] Then, as Figure 8 As shown, the camera 30 is positioned below the thin-film transistor array substrate 20 (S30).

[0182] The camera 30 overlaps with the camera area 12 of the display area 10.

[0183] As described above, the method for manufacturing a display device according to embodiments of the present disclosure includes preparing a separator 250 made of a negative photoresist material, thereby easily preparing a separator 250 having an inverted conical cross-section.

[0184] Furthermore, to prevent a decrease in the transmittance of the transmission region TA, the light-emitting layer 232, the second electrode 233, the passivation film 240, and the first protective film 241 should not be disposed in the transmission region TA. Therefore, after sequentially stacking the light-emitting material film 321, the conductive material film 322, the first insulating material film 323, and the second insulating material film 324, an etching process is performed on the front side until the top surface of the separator 250 is exposed. As a result, the removal of each of the light-emitting layer 232, the second electrode 233, the passivation film 240, and the first protective film 241 from the transmission region TA does not involve patterning and development processes using a mask. Therefore, this method can be performed relatively easily and simply.

[0185] Although embodiments of the present disclosure have been described in more detail with reference to the accompanying drawings, the present disclosure is not necessarily limited to these embodiments. The present disclosure can be implemented in various modifications without departing from the technical spirit of the present disclosure. Therefore, the embodiments disclosed herein are not intended to limit the technical spirit of the present disclosure, but rather to describe it. The scope of the technical spirit of the present disclosure is not limited by the embodiments. Therefore, it will be understood that the above embodiments are illustrative and not restrictive in all respects. The scope of protection of the present disclosure should be interpreted by the claims, and all technical ideas within the scope of the present disclosure should be interpreted as being included within the scope of the present disclosure.

Claims

1. A display apparatus comprising a display panel including a display area from which an image is output, wherein the display area including a camera area overlapping a camera disposed below a back surface of the display panel, wherein the display area includes a plurality of sub-pixel areas, wherein at least two adjacent sub-pixel areas among the plurality of sub-pixel areas correspond to one unit pixel area, wherein the camera area of the display area further includes a plurality of transmission areas alternately arranged with at least two unit pixel areas in each of a first direction and a second direction intersecting each other, wherein the display panel includes: a bank corresponding to a periphery of each of the plurality of sub-pixel areas; and a partition disposed above the bank and corresponding to each of the plurality of transmission areas, wherein the partition is made of a negative photoresist and includes an inverted taper cross-section, and wherein the partition is used to remove at least one of a light emitting layer, a second electrode, a passivation film, and a first protection film in each of the plurality of transmission areas in an etching process.

2. The display device according to claim 1, wherein the display panel further includes: a transistor array substrate including a substrate defining the display area, a plurality of thin film transistors disposed above the substrate, and a planarization film covering the plurality of thin film transistors; a plurality of first electrodes disposed above the planarization film and respectively corresponding to the plurality of sub-pixel areas; the light emitting layer disposed above the plurality of first electrodes and the bank and spaced apart from the partition; the second electrode disposed above the light emitting layer; the first protection film covering the second electrode; and a second protection film covering the partition and the first protection film, wherein the bank is disposed above the planarization film and covers an edge of each of the plurality of first electrodes.

3. The display device of claim 2, wherein, a refractive index of the partition is between a refractive index of the second protection film and a refractive index of the substrate.

4. The display device according to claim 2, wherein the partition protrudes convexly beyond the first protection film toward the second protection film.

5. The display device of claim 4, wherein, a top surface of the partition is in contact with the second protection film.

6. The display device according to claim 2, wherein the display panel further includes the passivation film disposed between each of the second electrode and the partition and the first protection film.

7. The display device according to claim 2, wherein the display panel further includes a third protection film covering the second protection film.

8. The display device according to claim 2, wherein the transistor array substrate further includes at least one signal line connected to the plurality of thin film transistors, wherein a portion of the signal line is disposed outside each of the transmission areas in the camera area.

9. The display device according to claim 1, wherein a width by which an edge of a top surface of the partition protrudes beyond an edge of a bottom surface of the partition is 1.5 µm or more. 10.A method for manufacturing a display apparatus, the method comprising: disposing a thin film transistor array substrate including a substrate defining a display area, a plurality of thin film transistors disposed above the substrate, and a planarization film covering the plurality of thin film transistors; A plurality of first electrodes are disposed above the planarization film, wherein each of the plurality of first electrodes corresponds to each of the plurality of sub-pixel regions included in the display region; A dam is provided above the planarization film, wherein the dam corresponds to the periphery of each of the plurality of sub-pixel regions and covers the edge of each of the first electrodes; A separator is provided above the embankment, wherein the separator corresponds to each of a plurality of transmission regions included in the camera region which is part of the display area, and wherein the separator is made of a negative photoresist and has an inverted conical cross-section; A light-emitting material film is provided covering the first electrode, the embankment, and the separator; A conductive material film is provided to cover the luminescent material film; A first insulating material film is provided to cover the conductive material film; A second insulating material film is provided to cover the first insulating material film in a planarized manner; and The etching process removes the portion of the second insulating material film disposed above the separator, the portion of the first insulating material film disposed above the separator, the portion of the conductive material film disposed above the separator, and the portion of the luminescent material film disposed above the separator. In the camera region of the display area, the plurality of transmissive regions are alternately arranged with at least two unit pixel regions in a first direction and a second direction in which they intersect.

11. The method of claim 10, wherein, Removing the portion of each of the second insulating material film, the first insulating film, the conductive material film, and the luminescent material film disposed above the separator results in: A light-emitting layer is formed, consisting of the light-emitting material film, disposed above the first electrode and the embankment and spaced apart from the separator; A second electrode, consisting of the conductive material film, is formed and disposed above the light-emitting layer; A passivation film composed of the first insulating material film is formed; as well as A first protective film is formed by the second insulating material film. The separator protrudes beyond the first protective film.

12. The method of claim 11, wherein, The method also includes, After removing portions of each of the first insulating material film, the second insulating film, the conductive material film, and the luminescent material film, a second protective film is provided to cover the separator and the first protective film in a planarized manner. The top surface of the separator is in contact with the second protective film.

13. The method of claim 12, wherein, The refractive index of the separator is between the refractive index of the second protective film and the refractive index of the substrate.

14. The method of claim 10, wherein, The edge of the top surface of the separator protrudes beyond the edge of the bottom surface of the separator by a width of 1.5 μm or greater.

15. The method of claim 10, wherein, When setting the thin-film transistor array substrate, the thin-film transistor array substrate further includes at least one signal line connected to the plurality of thin-film transistors. A portion of the signal line is disposed outside each of the transmission regions in the camera area.

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