Display module

Abstract

A display module is disclosed. The display module includes: a base layer; a pixel defining layer on the base layer and having a first opening and a second opening; and an element layer including a light-emitting element and a light-receiving element, the light-emitting element corresponding to the first opening and including a first light-emitting electrode on the base layer, a light-emitting layer on the first light-emitting electrode, and a second light-emitting electrode on the light-emitting layer, and a light-receiving element corresponding to the second opening and including a first light-receiving electrode on the base layer, a light-receiving layer on the first light-receiving electrode, a second light-receiving electrode on the light-receiving layer, and an optical compensation layer between the first light-receiving electrode and the light-receiving layer and not overlapping the first light-emitting electrode in plan view, the optical compensation layer includes a transparent conductive oxide. According to an embodiment, a display module is provided that simplifies a manufacturing process of a mask and prevents or substantially prevents lateral leakage current without affecting optical characteristics of a light emitting element.

Description

[0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0055116 filed in the Korean Intellectual Property Office on April 27, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] An aspect of an embodiment of the present disclosure is directed to a display module including a light receiving element that absorbs light to detect a fingerprint. Background Art

[0003] Various electronic devices are being used to provide image information. The electronic devices provide various functions to organically communicate with users (such as sensing user's input). Recent electronic devices may have a function of detecting a user's fingerprint.

[0004] Fingerprint recognition methods include a capacitive method that senses a change in capacitance formed between electrodes, an optical method that senses incident light using an optical sensor, and an ultrasonic method that senses vibration using a piezoelectric material.

[0005] The above information disclosed in this Background section is for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not constitute the prior art. Utility Model Content

[0006] The utility model aims to provide a display module which simplifies the manufacturing process of the mask and prevents or substantially prevents the lateral leakage current without affecting the optical characteristics of the light emitting element.

[0007] According to one or more embodiments of the present disclosure, a display module includes: a substrate layer; a pixel defining layer on the substrate layer and having a first opening and a second opening; and an element layer including a light-emitting element and a light-receiving element, the light-emitting element corresponds to the first opening and includes a first light-emitting electrode on the substrate layer, a light-emitting layer on the first light-emitting electrode, and a second light-emitting electrode on the light-emitting layer, and the light-receiving element corresponds to the second opening and is distinguished from the light-emitting element by the pixel defining layer. The light-receiving element includes: a first light-receiving electrode on the substrate layer; a light-receiving layer on the first light-receiving electrode; a second light-receiving electrode on the light-receiving layer; and an optical compensation layer between the first light-receiving electrode and the light-receiving layer, and not overlapping with the first light-emitting electrode in a plan view. The optical compensation layer includes a transparent conductive oxide.

[0008] In an embodiment, the optical compensation layer may have a thickness equal to or greater than about 250 angstroms and equal to or less than about 330 angstroms.

[0009] In an embodiment, the optical compensation layer may have an optical transmittance equal to or greater than about 80% and a relative humidity equal to or less than about 10%. -3Conductivity of Ω*cm.

[0010] In an embodiment, the optical compensation layer may include at least one of indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), tin oxide (TO), zinc oxide (ZO), gallium-doped zinc oxide (GZO), and aluminum-doped zinc oxide (AZO).

[0011] In an embodiment, the light-emitting element may further include: a first hole transport region between the first light-emitting electrode and the light-emitting layer; and a first electron transport region between the light-emitting layer and the second light-emitting electrode. The light-receiving element may further include: a second hole transport region between the optical compensation layer and the light-receiving layer; and a second electron transport region between the light-receiving layer and the second light-receiving electrode. The first hole transport region may be integrated with the second hole transport region, and the first electron transport region may be integrated with the second electron transport region.

[0012] In an embodiment, the element layer may further include a cover layer on the second light emitting electrode and the second light receiving electrode.

[0013] In an embodiment, the display module may further include: an encapsulation layer on the element layer to cover the light emitting element and the light receiving element; and an input sensing layer on the encapsulation layer. The encapsulation layer may include at least one organic layer and at least one inorganic layer, and the input sensing layer may include an input sensing electrode positioned not to overlap with the light emitting element and the light receiving element in a plan view.

[0014] In an embodiment, the light emitting element may not overlap the light receiving element in a plan view.

[0015] In an embodiment, the light emitting layer may be configured to emit first light traveling from the light emitting layer to the second light emitting electrode, and the light receiving layer may be configured to absorb second light traveling from the second light receiving electrode to the light receiving layer.

[0016] In an embodiment, the second light may have a wavelength equal to or greater than about 495 nm and equal to or less than about 570 nm.

[0017] In an embodiment, the light receiving element may have an external quantum efficiency of about 50% or more and about 62% or less with respect to the second light.

[0018] According to one or more embodiments of the present disclosure, a display module includes: a first light-emitting area, a second light-emitting area, and a third light-emitting area; a non-light-emitting area; a light-receiving area; a substrate layer; a first electrode, which is on the substrate layer and includes a first-first light-emitting electrode corresponding to the first light-emitting area, a first-second light-emitting electrode corresponding to the second light-emitting area, a first-third light-emitting electrode corresponding to the third light-emitting area, and a first light-receiving electrode corresponding to the light-receiving area; an optical compensation layer, which is directly on the first light-receiving electrode and is not overlapped with the first-first light-emitting electrode, the first-second light-emitting electrode, and the first-third light-emitting electrode; a hole transport area, including a first hole transport area on the first-first light-emitting electrode, the first-second light-emitting electrode, and the first-third light-emitting electrode, and a second hole transport area on the optical compensation layer; the first light-emitting layer, on the first hole transport region to correspond to the first light-emitting region and to be configured to emit the first-first light traveling from the first-first light-emitting electrode to the first hole transport region; a second light-emitting layer, on the first hole transport region to correspond to the second light-emitting region and to be configured to emit the first-second light traveling from the first-second light-emitting electrode to the first hole transport region; a third light-emitting layer, on the first hole transport region to correspond to the third light-emitting region and to be configured to emit the first-third light traveling from the first-third light-emitting electrode to the first hole transport region; a light-receiving layer, on the second hole transport region and to be configured to absorb the second light traveling from the second hole transport region to the optical compensation layer; an electron transport region, on the first light-emitting layer, the second light-emitting layer and the third light-emitting layer and the light-receiving layer; and a second electrode, on the electron transport region.

[0019] In an embodiment, the optical compensation layer may have a thickness equal to or greater than about 250 angstroms and equal to or less than about 330 angstroms.

[0020] In an embodiment, the optical compensation layer may have an optical transmittance equal to or greater than about 80% and a relative humidity equal to or less than about 10%. -3 Conductivity of Ω*cm.

[0021] In an embodiment, the optical compensation layer may include at least one of indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), tin oxide (TO), zinc oxide (ZO), gallium-doped zinc oxide (GZO), and aluminum-doped zinc oxide (AZO).

[0022] In an embodiment, the light receiving layer may have an external quantum efficiency of about 50% or more and about 62% or less with respect to the second light.

[0023] In an embodiment, the display module may further include: a covering layer on the second electrode; an encapsulation layer on the covering layer and including at least one organic layer and at least one inorganic layer; an input sensing layer on the encapsulation layer and including an input sensing electrode corresponding to the non-luminous area; and a color filter layer on the input sensing layer.

[0024] In an embodiment, the color filter layer may include: a first-first color filter layer corresponding to the first light emitting area; a first-second color filter layer corresponding to the second light emitting area; a first-third color filter layer corresponding to the third light emitting area; and a second color filter layer corresponding to the light receiving area.

[0025] In an embodiment, the first-first color filter layer may be configured to transmit light having a wavelength equal to or greater than about 620 nm and equal to or less than about 750 nm; the first-second color filter layer may be configured to transmit light having a wavelength equal to or greater than about 495 nm and equal to or less than about 570 nm; the first-third color filter layer may be configured to transmit light having a wavelength equal to or greater than about 450 nm and equal to or less than about 495 nm; and the second color filter layer may be configured to transmit light having a wavelength equal to or greater than about 450 nm and equal to or less than about 2500 nm.

[0026] In an embodiment, the display module may further include a light blocking part corresponding to the non-light emitting area.

[0027] According to one or more embodiments of the present disclosure, since the hole transport region of the light emitting element and the hole transport region of the light receiving element may not be formed simultaneously with each other (e.g., concurrently or substantially concurrently), the process of forming a mask for a display module can be simplified when compared with the process of forming a contrast mask. In addition, since the hole transport region may not be formed in the light emitting element and the light receiving element in common, a compensation layer for compensating for the optical distance may be formed separately, thereby preventing or substantially preventing the occurrence of lateral leakage current. Therefore, the efficiency of the electronic device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other aspects and features of the present disclosure will be more clearly understood from the following detailed description of illustrative, non-limiting embodiments with reference to the accompanying drawings, in which:

[0029] Figure 1 is a perspective view of an electronic device according to an embodiment of the present disclosure;

[0030] Figure 2 is an exploded perspective view of an electronic device according to an embodiment of the present disclosure;

[0031] Figure 3 It is along Figure 1A cross-sectional view taken along line II';

[0032] Figure 4 The display module according to the embodiment of the present disclosure is Figure 2 The plan view of the region DD';

[0033] Figure 5A According to an embodiment of the present disclosure, Figure 4 A cross-sectional view taken along line II-II';

[0034] Figure 5B yes Figure 5A An enlarged view of region EE';

[0035] Figure 6 According to an embodiment of the present disclosure, Figure 4 A cross-sectional view taken along line II-II'; and

[0036] Figure 7 According to an embodiment of the present disclosure, Figure 4 A cross-sectional view taken along line III-III'. DETAILED DESCRIPTION

[0037] Hereinafter, embodiments will be described in more detail with reference to the accompanying drawings, wherein the same reference numerals refer to the same elements throughout. However, the present disclosure may be implemented in various different forms and should not be construed as being limited to the embodiments shown herein. On the contrary, these embodiments are provided as examples so that the present disclosure will be thorough and complete, and will fully convey the aspects and features of the present disclosure to those skilled in the art. Therefore, processes, elements and techniques that are unnecessary for a person of ordinary skill in the art to fully understand the aspects and features of the present disclosure may not be described. Unless otherwise stated, throughout the drawings and written descriptions, the same reference numerals represent the same elements, and therefore, their redundant descriptions may not be repeated.

[0038] When a certain embodiment can be implemented differently, the specific process order may be different from the described order. For example, two processes described successively may be performed simultaneously or substantially simultaneously, or may be performed in the reverse order of the described order.

[0039] In the accompanying drawings, for the sake of clarity, the relative size, thickness and proportion of elements, layers and regions can be exaggerated and / or simplified. For ease of explanation, spatial relative terms such as "under ... ", "under ... ", "under ... ", "above ... ", "on ", etc. can be used to describe the relationship between an element or feature and another (other) element or feature as shown in the drawings. It will be understood that the spatial relative terms are intended to cover the different orientations of the device in use or operation except for the orientation depicted in the drawings. For example, if the device in the drawings is turned over, the element described as "under" or "under" or "below" other elements or features will then be oriented to "above" the other elements or features. Therefore, the example terms "under ... " and "under ... " can cover both the upper and lower orientations. The device can be oriented in other ways (for example, rotated 90 degrees or in other orientations), and the spatial relative descriptors used here should be interpreted accordingly.

[0040] In the drawings, the x-axis, y-axis, and z-axis are not limited to the three axes of the rectangular coordinate system and can be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis can be perpendicular to each other or substantially perpendicular to each other, or can represent different directions that are not perpendicular to each other.

[0041] It will be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the spirit and scope of the present disclosure, the first element, component, region, layer or part described below may be named as the second element, component, region, layer or part.

[0042] It will be understood that when an element or layer is referred to as being "on," "connected to," or "bound to" another element or layer, it can be directly on, directly connected to, or directly bound to the other element or layer, or there may be one or more intervening elements or layers. Similarly, when a layer, region, or element is referred to as being "electrically connected to" another layer, region, or element, it can be directly electrically connected to the other layer, region, or element, and / or can be indirectly electrically connected to the other layer, region, or element with one or more intervening layers, regions, or elements located therebetween. Additionally, it will be understood that when an element or layer is referred to as being "between" two elements or layers, it can be the only element or layer between the two elements or layers, or there may also be one or more intervening elements or layers.

[0043] The terms used herein are for the purpose of describing a particular embodiment, and are not intended to limit the present disclosure. As used herein, unless the context clearly states otherwise, the singular forms "one" and "one (kind / person)" are also intended to include plural forms. It will also be understood that when used in this specification, the terms "include", "comprise", "have" and their variations indicate the presence of stated features, integral bodies, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integral bodies, steps, operations, elements, components and / or their groups. As used herein, the term "and / or" includes any combination and all combinations of one or more of the related listed items. For example, the statement "A and / or B" means A, B or A and B. When a statement such as "at least one (kind / person) in ... " is before / after a column of elements, the entire column of elements is modified, rather than the individual elements of the column. For example, the expressions "at least one of a, b, and c" and "at least one selected from the group consisting of a, b, and c" mean only a, only b, only c, both a and b, both a and c, both b and c, all of a, b, and c, or variations thereof.

[0044] As used herein, the terms "substantially," "about," and similar terms are used as terms of approximation rather than terms of degree, and are intended to take into account the inherent variations in measured or calculated values ​​that one of ordinary skill in the art will recognize. In addition, when describing embodiments of the present disclosure, the use of "may refer to "one or more embodiments of the present disclosure." As used herein, the term "using" and variations thereof may be considered synonymous with the term "utilizing" and variations thereof, respectively.

[0045] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It will also be understood that, unless expressly defined as such herein, terms (such as those defined in general dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and / or in this specification, and should not be interpreted in an idealized or overly formal sense.

[0046] Figure 1 is a perspective view of an electronic device ED according to an embodiment of the present disclosure. Figure 2 is an exploded perspective view of an electronic device ED according to an embodiment of the present disclosure. Figure 3 It is along Figure 1 A cross-sectional view taken along line II'.

[0047] Figures 1 to 3The electronic device ED shown in the figure may be a device activated in response to an electrical signal. For example, the electronic device ED may be a mobile phone, a tablet computer, a car navigation unit (e.g., a car navigation device), a game unit (e.g., a game console), or a wearable device. However, the present disclosure is not limited thereto or thereby. Figure 1 A mobile phone is shown as a representative example of the electronic device ED.

[0048] The electronic device ED may display the image IM through the active area ED-AA. The active area ED-AA may include a plane defined by the first direction axis DR1 and the second direction axis DR2. The active area ED-AA may also include a curved surface bent from at least one side of the plane defined by the first direction axis DR1 and the second direction axis DR2. For example, the active area ED-AA may include only the plane, or the active area ED-AA may include the plane and two or more curved surfaces (for example, four curved surfaces bent from four sides of the plane, respectively).

[0049] The first direction axis DR1, the second direction axis DR2, the third direction axis DR3 and the fourth direction axis DR4 (see FIG. Figure 4 ) and the directions indicated by the first direction axis DR1, the second direction axis DR2, the third direction axis DR3, and the fourth direction axis DR4 may be relative to each other and thus may be variously modified to other appropriate directions. In addition, the directions indicated by the first direction axis DR1, the second direction axis DR2, the third direction axis DR3, and the fourth direction axis DR4 may be referred to as the first direction, the second direction, the third direction, and the fourth direction, respectively, and may be assigned with the same reference numerals as those of the first direction axis DR1, the second direction axis DR2, the third direction axis DR3, and the fourth direction axis DR4.

[0050] In the following, the first direction axis DR1 may be perpendicular or substantially perpendicular to the second direction axis DR2. The third direction axis DR3 may be a normal direction of a plane defined by the first direction axis DR1 and the second direction axis DR2. The fourth direction axis DR4 may be a direction between the first direction axis DR1 and the second direction axis DR2.

[0051] The thickness direction of the electronic device ED may be parallel or substantially parallel to a third directional axis DR3 that is a normal direction to a plane defined by the first directional axis DR1 and the second directional axis DR2. A front (e.g., upper) surface and a rear (e.g., lower) surface of each member of the electronic device ED may be defined relative to the third directional axis DR3.

[0052] According to an embodiment, the image IM provided from the electronic device ED may include a still image as well as a video. Figure 1A clock widget and application icons are shown as representative examples of the image IM. The surface through which the image IM is displayed may correspond to the front surface of the electronic device ED and the front surface of the window member WM.

[0053] According to an embodiment, the electronic device ED may sense a user input applied thereto from the outside. The user input may include various suitable types of external inputs, such as a part of the user's body, light, heat, and / or pressure. According to an embodiment, the electronic device ED may sense the user input through the active area ED-AA, and may respond to the sensed input. In addition, the electronic device ED may sense the user input applied to the side surface or rear surface of the electronic device ED according to design requirements. However, the present disclosure is not limited to a specific embodiment.

[0054] As an example, the electronic device ED may sense biometric information (such as a user's fingerprint FG) applied thereto from the outside. The electronic device ED may include a fingerprint recognition area defined in the effective area ED-AA. The fingerprint recognition area may be defined in the entire effective area ED-AA (e.g., the entire portion of the effective area ED-AA), or may be defined in a portion (e.g., a partial portion) of the effective area ED-AA.

[0055] Reference Figure 1 , Figure 2 and Figure 3 The electronic device ED may include a display module (eg, a display or a display device) DM, a window member WM, and a housing HAU. According to an embodiment, the window member WM and the housing HAU may be combined with each other to form an appearance (eg, an external appearance) of the electronic device ED.

[0056] According to an embodiment, the display module DM may include an active area AA and a peripheral area NAA defined therein. The active area AA may be activated in response to an electrical signal and may correspond to an active area ED-AA of the electronic device ED. As described above, the active area AA may be an area in which an image IM is displayed or an external input is sensed.

[0057] The peripheral area NAA may be defined as being adjacent to at least one side of the active area AA. The peripheral area NAA may be defined as surrounding the active area AA (eg, around the periphery of the active area AA). However, the present disclosure is not limited thereto or thereby. Figure 2 Unlike that shown in , according to an embodiment, a portion of the peripheral area NAA may be omitted as needed or desired. A driving circuit or driving line may be arranged in the peripheral area NAA to drive the active area AA.

[0058] According to an embodiment, the display module DM may include a display panel DP and an input sensing layer ISL disposed on the display panel DP. In some embodiments, the display module DM may further include an organic planarization layer disposed on the input sensing layer ISL.

[0059] The display panel DP may include a base layer BS and an element layer EDL disposed on the base layer BS. In addition, the display panel DP may include a circuit layer DP-CL disposed on the base layer BS between the base layer BS and the element layer EDL, and an encapsulation layer TFE disposed on the element layer EDL. The encapsulation layer TFE may cover the element layer EDL.

[0060] The electronic device ED may further include a window member WM disposed on the display module DM. The window member WM may include a window WP and an adhesive layer AP. The adhesive layer AP may be disposed between the color filter layer CFL and the window WP. The adhesive layer AP may be an optically transparent adhesive (OCA) film or an optically transparent adhesive resin (OCR) layer. According to an embodiment, the adhesive layer AP may be omitted as needed or desired.

[0061] The window WP may cover the entire outer side of the display module DM. The window WP may have a shape corresponding to the shape of the display module DM. According to an embodiment, the window WP of the electronic device ED may include an optically transparent insulating material. The window WP may be a glass substrate or a polymer substrate. As an example, the window WP may be a tempered glass substrate. The window WP may be the uppermost layer of the electronic device ED.

[0062] In addition, according to an embodiment, the window member WM of the electronic device ED may include a transmissive area TA and a bezel area BZA defined therein. The transmissive area TA may correspond to the active area AA of the display module DM, and the bezel area BZA may correspond to the peripheral area NAA of the display module DM.

[0063] The front surface of the window member WM including the transmission area TA and the bezel area BZA may correspond to the front surface of the electronic device ED. A user may view an image IM provided through the transmission area TA corresponding to the front surface of the electronic device ED.

[0064] The bezel area BZA may define the shape of the transmission area TA. The bezel area BZA may be adjacent to the transmission area TA and may surround the transmission area TA (e.g., around the periphery of the transmission area TA). However, the present disclosure is not limited thereto or thereby. According to an embodiment, the bezel area BZA may be provided to be adjacent to only one side of the transmission area TA, or may be partially omitted as needed or desired.

[0065] According to an embodiment, a portion of the electronic device ED that can be identified through the bezel area BZA of the electronic device ED may have a relatively lower transmittance than a portion of the electronic device ED that can be identified through the transmissive area TA of the electronic device ED. In addition, the bezel area BZA of the electronic device ED may have a suitable color (e.g., a predetermined color).

[0066] According to an embodiment, the electronic device ED may include a color filter layer CFL. As an example, the color filter layer CFL may transmit light having a desired wavelength range (eg, a specific or predetermined wavelength range).

[0067] The input sensing layer ISL included in the electronic device ED may be connected to the light emitting element DE (eg, Figure 5A ) and the light receiving element ISD (for example, refer to Figure 5A ) is stacked and may be disposed on the display panel DP. The input sensing layer ISL may sense an external input applied thereto from the outside. The external input may be a user input. The user input may include various suitable kinds of external inputs, such as a part of a user's body, light, heat, a pen, and / or pressure.

[0068] Figure 4 The display module DM according to the embodiment of the present disclosure is Figure 2 The plane graph in the region DD'. For example, Figure 4 The display panel DP of the display module DM may be Figure 2 The plan view of the region DD'.

[0069] According to an embodiment, the display module DM may include a plurality of light emitting areas PXA-R, PXA-G, and PXA-B arranged in the active area AA and a light receiving area ISA. The display module DM may include a first light emitting area PXA-R for emitting red light, a second light emitting area PXA-G for emitting green light, and a third light emitting area PXA-B for emitting blue light. In addition, the display module DM may include a light receiving area ISA for receiving and sensing light incident to the display module DM after being reflected by an external object. The non-light emitting area NPXA may be defined between the light emitting areas PXA-R, PXA-G, and PXA-B and between the light emitting areas PXA-R, PXA-G, and PXA-B and the light receiving area ISA. The light emitting areas PXA-R, PXA-G, and PXA-B may be distinguished from each other by the non-light emitting area NPXA, and the light emitting areas PXA-R, PXA-G, and PXA-B may be distinguished from the light receiving area ISA by the non-light emitting area NPXA. The non-light emitting area NPXA may surround each of the light emitting areas PXA-R, PXA-G, and PXA-B and the light receiving area ISA (eg, around the periphery of each of the light emitting areas PXA-R, PXA-G, and PXA-B and the light receiving area ISA).

[0070] According to an embodiment, the light emitting regions PXA-R, PXA-G, and PXA-B for emitting light in different wavelength ranges from each other may have different sizes from each other. In this case, the size may refer to a size when viewed in a plane defined by the first direction axis DR1 and the second direction axis DR2 (e.g., in a plan view).

[0071] However, the present disclosure is not limited thereto or thereby. According to an embodiment, the light emitting regions PXA-R, PXA-G, and PXA-B may have the same or substantially the same size as each other. In other embodiments, the light emitting regions PXA-R, PXA-G, and PXA-B may emit light having a color different from red light, green light, and blue light, and may have the same Figure 4 The plane shapes shown in the figure are different from the plane shapes.

[0072] According to an embodiment, when viewed in a plane (e.g., in a plan view), the light receiving area ISA may have a size smaller than that of each of the first light emitting area PXA-R, the second light emitting area PXA-G, and the third light emitting area PXA-B. However, the present disclosure is not limited thereto or thereby. According to an embodiment, the size of the light receiving area ISA may be equal to or greater than that of at least one of the first light emitting area PXA-R, the second light emitting area PXA-G, and the third light emitting area PXA-B.

[0073] Reference Figure 4, the first light emitting regions PXA-R may be alternately arranged with the third light emitting regions PXA-B along the first direction axis DR1 to form a first group PXG1. The second light emitting regions PXA-G may be alternately arranged with the light receiving regions ISA along the first direction axis DR1 to form a second group PXG2. In addition, the third light emitting regions PXA-B may be alternately arranged with the first light emitting regions PXA-R along the first direction axis DR1 to form a third group PXG3.

[0074] The first to third groups PXG1 to PXG3 may be sequentially arranged along the second direction axis DR2. Each of the first group PXG1, the second group PXG2, and the third group PXG3 may be provided in plural. Figure 4 In the embodiment shown in , the first group PXG1 , the second group PXG2 , the third group PXG3 , and the second group PXG2 arranged along the second direction axis DR2 may form one repeating unit, and the repeating unit may be repeatedly arranged along the second direction axis DR2 .

[0075] According to an embodiment, one second light emitting region PXA-G may be disposed to be spaced apart from one first light emitting region PXA-R or one third light emitting region PXA-B on the fourth direction axis DR4. The fourth direction axis DR4 may be a direction between the first direction axis DR1 and the second direction axis DR2.

[0076] In addition, according to an embodiment, the light receiving area ISA may be spaced apart from each of the light emitting areas PXA-R, PXA-G, and PXA-B, and may be disposed between the first light emitting area PXA-R and the third light emitting area PXA-B to be spaced apart from the first light emitting area PXA-R and the third light emitting area PXA-B on the second direction axis DR2. The light receiving area ISA may be alternately arranged with the second light emitting area PXA-G along the first direction axis DR1.

[0077] Figure 4 The arrangement structure of the light emitting regions PXA-R, PXA-G, and PXA-B shown in FIG. 1 may be referred to as an RGBG structure (eg, structure, is an officially registered trademark of Samsung Display Co., Ltd.). However, the arrangement structure of the light emitting areas PXA-R, PXA-G, and PXA-B in the electronic device ED is not limited to Figure 4As an example, according to an embodiment, the light-emitting regions PXA-R, PXA-G, and PXA-B may have a stripe structure in which the first light-emitting region PXA-R, the second light-emitting region PXA-G, and the third light-emitting region PXA-B are sequentially and alternately arranged with each other along the first direction axis DR1 or the second direction axis DR2. In addition, in the stripe structure, the light-receiving region ISA may be arranged in the same row or column as the second light-emitting region PXA-G to form a stripe arrangement. However, according to an embodiment, the arrangement shape of the light-receiving region ISA and the light-emitting regions PXA-R, PXA-G, and PXA-B and the arrangement ratio of the light-receiving region ISA and the light-emitting regions PXA-R, PXA-G, and PXA-B may be different from the above-mentioned arrangement shape and arrangement ratio.

[0078] Figure 5A According to an embodiment of the present disclosure, Figure 4 A cross-sectional view taken along line II-II'.

[0079] Figure 5A Shows Figure 4 , and a portion of the light-emitting regions PXA-R, PXA-G, and PXA-B and the light-receiving region ISA shown in FIG. Figure 5A is an electronic device ED (for example, see Figure 3 ) is a cross-sectional view of a portion of ). For ease of explanation, Figure 3 The circuit layer DP-CL in the components shown in FIG. Figure 5A Shown in.

[0080] Reference Figure 3 and Figure 5A , the electronic device ED may include a base layer BS. The base layer BS may be a member that provides a base surface on which the first light emitting electrode EML-AE and the first light receiving electrode OPD-AE are disposed. The base layer BS may be a glass substrate, a metal substrate, or a polymer substrate. However, the present disclosure is not limited thereto or thereby, and the base layer BS may be an inorganic layer, an organic layer, or a composite material layer.

[0081] The base layer BS may have a multilayer structure. For example, the base layer BS may have a three-layer structure of a synthetic resin layer, an adhesive layer and a synthetic resin layer. The synthetic resin layer may include a polyimide resin. In addition, the synthetic resin layer may include at least one of an acrylate resin, a methacrylate resin, a polyisoprene resin, a vinyl resin, an epoxy resin, a urethane resin, a cellulose resin, a siloxane resin, a polyamide resin and a perylene resin. As used in the present disclosure, the term "X-type resin" refers to a resin including a functional group X.

[0082] The element layer EDL may be disposed on the base layer BS. The element layer EDL may include a light emitting element DE and a light receiving element ISD.

[0083] As an example, the light emitting element DE included in the element layer EDL may include an organic light emitting element, a quantum dot light emitting element, a micro LED, or a nano LED. However, the present disclosure is not limited thereto or thereby. According to the embodiment, the light emitting element DE may be implemented in various suitable ways as long as light is generated in response to an electrical signal or the amount of light can be controlled.

[0084] The light receiving element ISD may be an optical sensor that receives and recognizes light reflected by an external object. In more detail, the light receiving element ISD may be an optical sensor that recognizes light in a visible light region reflected by an external object. According to an embodiment, the light receiving element ISD may be a biometric sensor that recognizes light reflected from a body part of a user (such as a fingerprint or a vein) and converts the optical signal into an electrical signal.

[0085] The pixel defining layer PDL may be disposed on the base layer BS, and may be provided with openings OP1 and OP2 defined therethrough.

[0086] The light emitting element DE and the light receiving element ISD may be spaced apart (eg, separated) and distinguished from each other with respect to the pixel defining layer PDL.

[0087] The pixel defining layer PDL may be provided with a first opening OP1 and a second opening OP2 defined therethrough. Components of the light emitting element DE may be provided in the first opening OP1, and components of the light receiving element ISD may be provided in the second opening OP2.

[0088] The pixel defining layer PDL may be disposed on the base layer BS. Portions of the upper surfaces of the first electrodes EML-AE and OPD-AE may be exposed through the openings OP1 and OP2. In the present embodiment, the light emitting regions PXA-R, PXA-G, and PXA-B and the light receiving region ISA may be defined to correspond to the first electrodes EML-AE and OPD-AE exposed through the openings OP1 and OP2. The first electrodes EML-AE and OPD-AE may include a first light emitting electrode EML-AE and a first light receiving electrode OPD-AE.

[0089] According to an embodiment, the pixel defining layer PDL may be formed of a polymer resin. As an example, the pixel defining layer PDL may include a polyacrylate resin or a polyimide resin. In addition, in addition to the polymer resin, the pixel defining layer PDL may also include an inorganic material. The pixel defining layer PDL may include a light absorbing material, or may include a black pigment or a black dye. The pixel defining layer PDL including a black pigment or a black dye may be implemented as a black pixel defining layer. When forming the pixel defining layer PDL, carbon black may be used as a black pigment or a black dye. However, the present disclosure is not limited to this or thereby.

[0090] In addition, the pixel defining layer PDL may include an inorganic material. As an example, the pixel defining layer PDL may include silicon nitride (SiN x ), silicon oxide (SiO x ) or silicon oxynitride (SiO x N y ).

[0091] Figure 5A The light emitting element DE shown in FIG. 1 may be disposed to correspond to one of the first light emitting region PXA-R, the second light emitting region PXA-G, and the third light emitting region PXA-B. Figure 4 and Figure 5A , the light emitting element DE arranged corresponding to the first light emitting region PXA-R may emit red light, the light emitting element DE arranged corresponding to the second light emitting region PXA-G may emit green light, and the light emitting element DE arranged corresponding to the third light emitting region PXA-B may emit blue light.

[0092] According to an embodiment, the light emitting element DE may include a first light emitting electrode EML-AE, a second light emitting electrode EML-CE, and a light emitting layer EML disposed therebetween. At least a portion of an upper surface of the first light emitting electrode EML-AE may be exposed through the first opening OP1.

[0093] According to an embodiment, the light receiving element ISD may include a first light receiving electrode OPD-AE, a second light receiving electrode OPD-CE, and a light receiving layer OPD. At least a portion of an upper surface of the first light receiving electrode OPD-AE may be exposed through the second opening OP2.

[0094] In the element layer EDL, the first electrodes EML-AE and OPD-AE may be formed of a metal material, a metal alloy, or a conductive compound. The first electrodes EML-AE and OPD-AE may be anodes or cathodes. However, the present disclosure is not limited thereto or thereby. In addition, the first electrodes EML-AE and OPD-AE may be pixel electrodes or sensing electrodes. The first electrodes EML-AE and OPD-AE may be transmissive electrodes, transflective electrodes, or reflective electrodes. When the first electrodes EML-AE and OPD-AE are transmissive electrodes, the first electrodes EML-AE and OPD-AE may include transparent metal oxides, such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), and / or indium tin zinc oxide (ITZO), etc., as examples. When the first electrodes EML-AE and OPD-AE are transflective electrodes or reflective electrodes, the first electrodes EML-AE and OPD-AE may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, W, suitable compounds thereof, or suitable mixtures thereof (such as a mixture of Ag and Mg as an example), or a material having a multilayer structure such as LiF / Ca or LiF / Al.

[0095] The second electrodes EML-CE and OPD-CE may be common electrodes. The second electrodes EML-CE and OPD-CE may be cathodes or anodes. However, the present disclosure is not limited thereto or thereby. As an example, when the first electrodes EML-AE and OPD-AE are anodes, the second electrodes EML-CE and OPD-CE may be cathodes, and when the first electrodes EML-AE and OPD-AE are cathodes, the second electrodes EML-CE and OPD-CE may be anodes.

[0096] The second electrodes EML-CE and OPD-CE may be transmissive electrodes, transflective electrodes or reflective electrodes. When the second electrodes EML-CE and OPD-CE are transmissive electrodes, the second electrodes EML-CE and OPD-CE may include transparent metal oxides, such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO) and / or indium tin zinc oxide (ITZO) and the like. When the second electrodes EML-CE and OPD-CE are transflective electrodes or reflective electrodes, the second electrodes EML-CE and OPD-CE may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, Yb, W, suitable compounds thereof or suitable mixtures thereof (such as AgMg, AgYb or MgYb as examples), or materials having a multilayer structure such as LiF / Ca or LiF / Al.

[0097] The first electrodes EML-AE and OPD-AE included in the element layer EDL may be transflective electrodes or reflective electrodes, and the second electrodes EML-CE and OPD-CE included in the element layer EDL may be transmissive electrodes or transflective electrodes. In other words, according to an embodiment, the element layer EDL may include transmissive or transflective second electrodes EML-CE and OPD-CE, and therefore, light reflected by an external object may be easily transmitted to the light receiving element ISD.

[0098] The light emitting layer EML of the light emitting element DE may be disposed in the first opening OP1. The light emitting layer EML may include an organic light emitting material or a quantum dot material.

[0099] The light receiving layer OPD of the light receiving element ISD may be disposed in the second opening OP2. The light receiving layer OPD may include a light receiving material that receives light and converts the received light into an electrical signal. As an example, the light receiving layer OPD may include an organic light receiving material. According to an embodiment, the light receiving layer OPD may include an organic polymer material as a light receiving material. As an example, the light receiving layer OPD may include a conjugated polymer. The light receiving layer OPD may include a thiophene-based conjugated polymer, a benzodithiophene-based conjugated polymer, a thieno[3,4-c]pyrrole-4,6-dione (TPD)-based conjugated polymer, a diketo-pyrrole-pyrrole (DPP)-based conjugated polymer and / or a benzothiadiazole (BT)-based conjugated polymer, etc. However, the present disclosure is not limited thereto or thereby.

[0100] According to an embodiment, the light receiving element ISD can sense light of a suitable wavelength (e.g., a specific or predetermined wavelength). As an example, the light receiving element ISD can sense light having a wavelength equal to or greater than about 450nm and equal to or less than about 2500nm. However, the present disclosure is not limited to this or thereby. As an example, the light receiving element ISD can sense light having a wavelength equal to or greater than about 495nm and equal to or less than about 570nm, and the absorption center wavelength can be about 530nm. In other words, the light receiving element ISD can sense green light.

[0101] According to an embodiment, the light receiving element ISD may further include an optical compensation layer TCO.

[0102] The optical compensation layer TCO may be disposed between the first light receiving electrode OPD-AE and the light receiving layer OPD, and may not overlap with the first light emitting electrode EML-AE when viewed in a plane (e.g., in a plan view). As used herein, when a component is referred to as not overlapping with another component when viewed in a plane (e.g., in a plan view), the two components may not overlap with each other when viewed in a plane defined by the first direction axis DR1 and the second direction axis DR2. In other words, the statement "when viewed in a plane (e.g., in a plan view), the optical compensation layer TCO does not overlap with the first light emitting electrode EML-AE" means that when viewed on a plane (e.g., in a plan view), there is no overlapping area between the first light emitting electrode EML-AE and the optical compensation layer TCO.

[0103] The optical compensation layer TCO may be disposed directly on the first light receiving electrode OPD-AE. The optical compensation layer TCO may be disposed in contact with an upper surface of the first light receiving electrode OPD-AE.

[0104] The optical compensation layer TCO may have a value equal to or greater than about and equal to or less than approximately As an example, when the optical compensation layer TCO includes indium zinc oxide (IZO), the optical compensation layer TCO may have a thickness equal to or greater than about and equal to or less than approximately When the optical compensation layer TCO includes indium tin oxide (ITO), the optical compensation layer TCO may have a thickness equal to or greater than about and equal to or less than approximately The thickness of the substrate is the same or substantially the same as the thickness of the substrate. However, the present disclosure is not limited thereto or thereby.

[0105] According to an embodiment, the optical compensation layer TCO may have an optical transmittance equal to or greater than about 80% and a relative humidity equal to or less than about 10%. -3 Conductivity of Ω×m.

[0106] The optical compensation layer TCO may include a transparent conductive oxide. As an example, the optical compensation layer TCO may include at least one of indium tin oxide (ITO), indium zinc oxide (IZO), indium gallium zinc oxide (IGZO), tin oxide (TO), zinc oxide (ZO), gallium-doped zinc oxide (GZO), and aluminum-doped zinc oxide (AZO). However, the present disclosure is not limited thereto or thereby.

[0107] The element layer EDL may further include a hole transport region HTR and an electron transport region ETR. The hole transport region HTR may have a thickness equal to or greater than about and equal to or less than approximately The hole transport region HTR may include a first hole transport region HTR1 and a second hole transport region HTR2, and the electron transport region ETR may include a first electron transport region ETR1 and a second electron transport region ETR2.

[0108] The element layer EDL may include a first hole transport region HTR1 disposed between the first light emitting electrode EML-AE and the light emitting layer EML, a first electron transport region ETR1 disposed between the light emitting layer EML and the second light emitting electrode EML-CE, a second hole transport region HTR2 disposed between the first light receiving electrode OPD-AE and the light receiving layer OPD, and a second electron transport region ETR2 disposed between the light receiving layer OPD and the second light receiving electrode OPD-CE. According to an embodiment, the first hole transport region HTR1 may be integrally disposed with the second hole transport region HTR2, and the first electron transport region ETR1 may be integrally disposed with the second electron transport region ETR2. In other words, the first hole transport region HTR1 and the second hole transport region HTR2 may be integrally connected to each other to provide the hole transport region HTR, and the first electron transport region ETR1 and the second electron transport region ETR2 may be integrally connected to each other to provide the electron transport region ETR. Each of the hole transport region HTR and the electron transport region ETR may be provided as a common layer.

[0109] According to an embodiment, the hole transport region HTR forming the light emitting element DE and the light receiving element ISD may have a single-layer structure of a single material, a single-layer structure of multiple different materials, or a multilayer structure of multiple layers formed of multiple different materials. As an example, the hole transport region HTR may have a single-layer structure of a hole injection layer or a hole transport layer, or a single-layer structure of a hole injection material or a hole transport material. According to an embodiment, the hole transport region HTR included in the light emitting element DE and the light receiving element ISD may include a hole transport layer, and may also include a hole injection layer.

[0110] Figure 5B yes Figure 5A An enlarged view of area EE'.

[0111] Reference Figure 5A and Figure 5B The light emitting element DE may further include a light emitting compensation layer ERL disposed between the first hole transport region HTR1 and the light emitting layer EML.

[0112] The light emitting compensation layer ERL may include a hole transport material.

[0113] The light emitting compensation layer ERL may include a material that is the same as or substantially the same as that of the first hole transport region HTR1, and the light emitting compensation layer ERL may be used to adjust the entire thickness of the light emitting element DE, thereby controlling the resonance distance. As an example, the light emitting compensation layer ERL may have a thickness of about , but the present disclosure is not limited thereto or thereby.

[0114] The first electrode EML-AE and OPD-AE may include a first transparent metal oxide layer TMO1, a metal layer ML disposed on the first transparent metal oxide layer TMO1, and a second transparent metal oxide layer TMO2 disposed on the metal layer ML.

[0115] The transparent metal oxide layers TMO1 and TMO2 may include indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), and / or indium tin zinc oxide (ITZO), or the like.

[0116] The metal layer ML may include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF, Mo, Ti, Yb, W, suitable compounds thereof, or suitable mixtures thereof (such as AgMg, AgYb, or MgYb, for example), or a material having a multilayer structure such as LiF / Ca or LiF / Al.

[0117] In the case where the second transparent metal oxide layer TMO2 of the first light receiving electrode OPD-AE includes a transparent conductive oxide, the optical compensation layer TCO may include a material that is the same as or substantially the same as the material of the second transparent metal oxide layer TMO2, or a different material. As an example, the second transparent metal oxide layer TMO2 may include indium tin oxide (ITO), and the optical compensation layer TCO may include indium zinc oxide (IZO). According to an embodiment, each of the second transparent metal oxide layer TMO2 and the optical compensation layer TCO may include indium tin oxide (ITO). The optical compensation layer TCO and the first light receiving electrode OPD-AE may be distinguished from each other, and an interface may be defined between the optical compensation layer TCO and the first light receiving electrode OPD-AE. An interface may be defined between the optical compensation layer TCO and the second transparent metal oxide layer TMO2.

[0118] According to an embodiment, the electron transport region ETR forming the light emitting element DE and the light receiving element ISD may have a single-layer structure of a single material, a single-layer structure of multiple different materials, or a multilayer structure of multiple layers formed by multiple different materials. As an example, the electron transport region ETR may have a single-layer structure of an electron injection layer or an electron transport layer, or a single-layer structure of an electron injection material or an electron transport material. In addition, the electron transport region ETR may have a single-layer structure of multiple different materials, or may include multiple layers stacked sequentially from the light emitting layer EML. According to an embodiment, the electron transport region ETR included in the light emitting element DE and the light receiving element ISD may include an electron transport layer, and may also include an electron injection layer.

[0119] According to an embodiment, the element layer EDL may further include a cover layer CPL.

[0120] The cover layer CPL may be disposed on the second light emitting electrode EML-CE and the second light receiving electrode OPD-CE.

[0121] The cover layer CPL can improve the luminous efficiency through the principle of constructive interference. The cover layer CPL may include a suitable material having a refractive index equal to or greater than about 1.6 relative to light with a wavelength of about 589nm. The cover layer CPL may be an organic cover layer including an organic material, an inorganic cover layer including an inorganic material, or a composite cover layer including an organic material and an inorganic material. For example, the cover layer CPL may include a carbocyclic compound, a heterocyclic compound, an amine-containing compound, a porphyrin derivative, a phthalocyanine derivative, a naphthalocyanine derivative, an alkali metal complex, an alkaline earth metal complex, or any suitable combination thereof. The carbocyclic compound, the heterocyclic compound, and the amine-containing compound may be optionally substituted with a substituent including O, N, S, Se, Si, F, Cl, Br, I, or any suitable combination thereof.

[0122] The display module DM may further include an encapsulation layer TFE.

[0123] The encapsulation layer TFE may be disposed on the element layer EDL, and may cover the light emitting element DE and the light receiving element ISD.

[0124] The encapsulation layer TFE may include at least one inorganic layer and at least one organic layer. As an example, the encapsulation layer TFE may include at least two inorganic layers and one or more organic layers disposed between the inorganic layers. The encapsulation layer TFE may include a plurality of inorganic layers and a plurality of organic layers stacked sequentially.

[0125] The encapsulated inorganic layer can protect the light emitting element DE and the light receiving element ISD from moisture and oxygen. The encapsulated organic layer can protect the light emitting element DE and the light receiving element ISD from foreign matter such as dust particles. The encapsulated inorganic layer may include a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, or an aluminum oxide layer, but the present disclosure is not limited thereto or thereby. The encapsulated organic layer may include an acrylic organic layer, but the present disclosure is not limited thereto or thereby.

[0126] The display module DM may further include an input sensing layer ISL.

[0127] The input sensing layer ISL may be disposed on the encapsulation layer TFE and may sense an external input applied thereto from the outside. The external input may be a user input. The user input may include various suitable external inputs, such as a part of the user's body, light, heat, a pen, and / or pressure.

[0128] The input sensing layer ISL may include an input sensing electrode ISLE.

[0129] When viewed in a plane (eg, in a plan view), the input sensing electrode ISLE may not overlap the light emitting element DE and the light receiving element ISD. The input sensing electrode ISLE may be disposed to overlap the non-light emitting area NPXA.

[0130] The input sensing layer ISL may include (eg, may be) an inorganic layer including at least one of silicon nitride, silicon oxynitride, and silicon oxide. According to an embodiment, the input sensing layer ISL may include (eg, may be) an organic layer including epoxy-based resin, acrylic-based resin, or imide-based resin.

[0131] The input sensing electrode ISLE may have a single-layer structure of a single conductive layer or a multi-layer structure of a plurality of layers stacked on one another on the third direction axis DR3 .

[0132] The conductive layer having a single-layer structure may include a metal layer or a transparent conductive layer. The metal layer may include molybdenum, silver, titanium, copper, aluminum or a suitable alloy thereof. The transparent conductive layer may include a transparent conductive oxide such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc tin oxide (IZTO), etc. In addition, the transparent conductive layer may include a conductive polymer such as PEDOT, a metal nanowire, graphene, etc.

[0133] The conductive layer having a multi-layer structure may include a plurality of metal layers. The metal layer may have a three-layer structure of titanium / aluminum / titanium. The conductive layer having a multi-layer structure may include at least one metal layer and at least one transparent conductive layer.

[0134] When viewed in a plane (eg, in a plan view), the light emitting element DE may not overlap the light receiving element ISD.

[0135] The display module DM may further include a color filter layer CFL disposed on the input sensing layer ISL.

[0136] The color filter layer CFL can selectively transmit light within a desired wavelength range (e.g., a specific or predetermined wavelength range). As an example, a portion of the color filter layer CFL can selectively transmit light having a wavelength range of about 450 nm to about 2500 nm. The portion of the color filter layer CFL can selectively transmit light within a wavelength range that is the same as or substantially the same as the wavelength range of light absorbed by the light receiving element ISD. Therefore, light within a desired wavelength range can be selectively incident on the light receiving element ISD through the color filter layer CFL, and the sensing sensitivity of the light receiving element ISD can be improved.

[0137] The color filter layer CFL may include a first color filter layer CFL1 disposed corresponding to the light emitting areas PXA-R, PXA-G, and PXA-B, and a second color filter layer CFL2 disposed corresponding to the light receiving area ISA.

[0138] The color filter layer CFL may further include a light blocking part BM disposed corresponding to the non-light emitting area NPXA.

[0139] The light blocking part BM may have a black color and may include a black colorant. The black colorant may include a black dye or a black pigment. The black colorant may include a metal material such as chromium or an oxide thereof or carbon black.

[0140] The display module DM may include a fingerprint acquisition area FGA defined therein.

[0141] Reference Figure 5A , the fingerprint acquisition area FGA may be defined as an area between the intersections of each of the first straight line DL1 and the second straight line DL2 with the upper surface of the window member WM. The first straight line DL1 and the second straight line DL2 may be imaginary indicator lines extending from one end and the other end (e.g., opposite ends) of the light receiving layer OPD, respectively, to contact the light blocking part BM.

[0142] The light receiving layer OPD can absorb the reflected light IP-L incident thereto through the fingerprint acquisition area FGA (for example, refer to Figure 6 ).

[0143] Figure 6 According to an embodiment of the present disclosure, Figure 4 A cross-sectional view taken along line II-II'. Figure 6 A state in which a fingerprint FG as an external input is recognized is shown.

[0144] Reference Figure 5A and Figure 6 , the emission light OT-L emitted from the light emitting element DE included in the element layer EDL of the display module DM may be reflected by an external object (such as a fingerprint FG, for example), and may be incident on the light receiving element ISD included in the element layer EDL through the fingerprint acquisition area FGA as the reflected light IP-L. The reflected light IP-L incident on the light receiving element ISD through the fingerprint acquisition area FGA may be within a wavelength range equal to or greater than about 495 nm and equal to or less than about 2500 nm, but the present disclosure is not limited thereto. As an example, the reflected light IP-L incident on the light receiving element ISD through the fingerprint acquisition area FGA may be within a wavelength range equal to or greater than about 495 nm and equal to or less than about 570 nm. The light receiving element ISD may receive the reflected light IP-L, may convert the received light into an electrical signal to identify an external input, and may change the driving state of the electronic device ED. The light receiving element ISD may have an external quantum efficiency of about 50% or more and about 62% or less relative to the reflected light IP-L. As an example, in a case where the optical compensation layer TCO of the light receiving element ISD includes indium zinc oxide (IZO), the light receiving element ISD may have an external quantum efficiency of about 62% or less with respect to the reflected light IP-L. In a case where the optical compensation layer TCO of the light receiving element ISD includes indium tin oxide (ITO), the light receiving element ISD may have an external quantum efficiency of about 59.7% with respect to the reflected light IP-L. However, the present disclosure is not limited to these examples.

[0145] Figure 7 According to an embodiment of the present disclosure, Figure 4 A cross-sectional view taken along line III-III'. Figure 7 The following description of the display module DM may focus on the above reference Figure 5A The differences between the display modules DM are described, and therefore redundant descriptions therebetween may not be repeated.

[0146] Reference Figure 7 , the display module DM may include a first light emitting area PXA-R, a second light emitting area PXA-G, a third light emitting area PXA-B, a non-light emitting area NPXA, a light receiving area ISA, and a fingerprint acquiring area FGA.

[0147] The display module DM may include a base layer BS.

[0148] The first light emitting electrode EML-AE may include a first-first light emitting electrode EML-AE1 disposed on the base layer BS to correspond to the first light emitting region PXA-R, a first-second light emitting electrode EML-AE2 disposed on the base layer BS to correspond to the second light emitting region PXA-G, and a first-third light emitting electrode EML-AE3 disposed on the base layer BS to correspond to the third light emitting region PXA-B.

[0149] The first light emitting compensation layer ERL1 may be disposed between the first hole transport region HTR1 and the first light emitting layer EML1. The second light emitting compensation layer ERL2 may be disposed between the first hole transport region HTR1 and the second light emitting layer EML2. The third light emitting compensation layer ERL3 may be disposed between the first hole transport region HTR1 and the third light emitting layer EML3.

[0150] The first light receiving electrode OPD-AE may be disposed on the base layer BS to correspond to the light receiving area ISA.

[0151] The display module DM may further include an optical compensation layer TCO disposed directly on the first light receiving electrode OPD-AE.

[0152] The optical compensation layer TCO may not overlap the first-first light emitting electrode EML-AE1, the first-second light emitting electrode EML-AE2, and the first-third light emitting electrode EML-AE3.

[0153] The display module DM may further include a hole transport region HTR, an emission layer EML, a light receiving layer OPD, and an electron transport region ETR.

[0154] The hole transport regions HTR1 and HTR2 may include a first hole transport region HTR1 disposed on the first-first light emitting electrode EML-AE1, the first-second light emitting electrode EML-AE2, and the first-third light emitting electrode EML-AE3 and a second hole transport region HTR2 disposed on the optical compensation layer TCO.

[0155] The first hole transport region HTR1 may be integrally provided with the second hole transport region HTR2. In other words, the first hole transport region HTR1 may be connected to the second hole transport region HTR2 to provide the hole transport regions HTR1 and HTR2 integrally formed with each other, and thus, the hole transport regions HTR1 and HTR2 may serve as a common layer.

[0156] The light emitting layer EML may include a first light emitting layer EML1 disposed on the first hole transport region HTR1 to correspond to the first light emitting region PXA-R, a second light emitting layer EML2 disposed on the first hole transport region HTR1 to correspond to the second light emitting region PXA-G, and a third light emitting layer EML3 disposed on the first hole transport region HTR1 to correspond to the third light emitting region PXA-B.

[0157] The light receiving layer OPD may be disposed on the second hole transport region HTR2.

[0158] The electron transport region ETR may include a first electron transport region ETR1 disposed on the first, second, and third light emitting layers EML1, EML2, and EML3, and a second electron transport region ETR2 disposed on the light receiving layer OPD.

[0159] The first electron transport region ETR1 may be integrally provided with the second electron transport region ETR2. In other words, the first electron transport region ETR1 may be connected to the second electron transport region ETR2 to provide the electron transport regions ETR1 and ETR2 integrally formed, and thus, the electron transport regions ETR1 and ETR2 may serve as a common layer.

[0160] The display module DM may further include second electrodes EML-CE and OPD-CE disposed on the electron transport region ETR.

[0161] The display module DM may further include a cover layer CPL disposed on the second electrodes EML-CE and OPD-CE, an encapsulation layer TFE disposed on the cover layer CPL, an input sensing layer ISL disposed on the encapsulation layer TFE and including an input sensing electrode ISLE disposed corresponding to the non-light emitting area NPXA, and a color filter layer CFL disposed on the input sensing layer ISL.

[0162] The second electrodes EML-CE and OPD-CE, the encapsulation layer TFE, the input sensing electrode ISLE and the input sensing layer ISL may be the same as those mentioned above. Figure 5A The described second electrodes EML-CE and OPD-CE, the encapsulation layer TFE, the input sensing electrode ISLE, and the input sensing layer ISL are the same or substantially the same, and thus, redundant descriptions thereof will not be repeated.

[0163] The color filter layer CFL can selectively transmit light within a desired wavelength range (e.g., a specific or predetermined wavelength range). As an example, a portion of the color filter layer CFL can selectively transmit light having a wavelength range of about 450 nm to about 2500 nm. The portion of the color filter layer CFL can selectively transmit light within a wavelength range that is the same as or substantially the same as the wavelength range of light absorbed by the light receiving element ISD. Therefore, light within a specific wavelength range can be selectively incident on the light receiving element ISD through the color filter layer CFL, and the sensing sensitivity of the light receiving element ISD can be improved.

[0164] The color filter layer CFL may include a first-first color filter layer CFL1-1 disposed corresponding to the first light emitting area PXA-R, a first-second color filter layer CFL1-2 disposed corresponding to the second light emitting area PXA-G, a first-third color filter layer CFL1-3 disposed corresponding to the third light emitting area PXA-B, and a second color filter layer CFL2 disposed corresponding to the light receiving area ISA.

[0165] The color filter layer CFL may further include a light blocking part BM.

[0166] The light blocking part BM may have a black color and may include a black colorant. The black colorant may include a black dye or a black pigment. The black colorant may include a metal material such as chromium or an oxide thereof or carbon black.

[0167] The first light emitting layer EML1 may emit first-first light OT-L1 traveling from the first-first light emitting electrode EML-AE1 to the first hole transport region HTR1. The second light emitting layer EML2 may emit first-second light OT-L2 traveling from the first-second light emitting electrode EML-AE2 to the first hole transport region HTR1. The third light emitting layer EML3 may emit first-third light OT-L3 traveling from the first-third light emitting electrode EML-AE3 to the first hole transport region HTR1.

[0168] The first-first light OT-L1 may have a wavelength range of equal to or greater than about 620 nm and equal to or less than about 750 nm. The first-second light OT-L2 may have a wavelength range of equal to or greater than about 495 nm and equal to or less than about 570 nm. The first-third light OT-L3 may have a wavelength range of equal to or greater than about 450 nm and equal to or less than about 495 nm. However, the present disclosure is not limited to the above examples.

[0169] The first-first color filter layer CFL1-1 may transmit the first-first light OT-L1, the first-second color filter layer CFL1-2 may transmit the first-second light OT-L2, the first-third color filter layer CFL1-3 may transmit the first-third light OT-L3, and the second color filter layer CFL2 may transmit the second light (reflected light) IP-L.

[0170] The light receiving layer OPD may absorb the second light IP-L traveling from the second electron transport region ETR2 to the light receiving layer OPD in the fingerprint acquisition area FGA.

[0171] The second light IP-L may have a wavelength range equal to or greater than about 495 nm and equal to or less than about 570 nm. As an example, the absorption center wavelength may be about 530 nm. In other words, the first-second light OT-L2 and the second light IP-L may have the same or substantially the same wavelength range as each other, but the present disclosure is not limited thereto.

[0172] The first-first color filter layer CFL1-1 may transmit light having a wavelength equal to or greater than about 620 nm and equal to or less than about 750 nm. The first-second color filter layer CFL1-2 may transmit light having a wavelength equal to or greater than about 495 nm and equal to or less than about 570 nm. The first-third color filter layer CFL1-3 may transmit light having a wavelength equal to or greater than about 450 nm and equal to or less than about 495 nm. The second color filter layer CFL2 may transmit light having a wavelength equal to or greater than about 450 nm and equal to or less than about 2500 nm. However, the present disclosure is not limited to the above examples.

[0173] Hereinafter, the light receiving element included in the display module (e.g., display or display device) according to one or more example embodiments of the present disclosure and the comparative example will be described in more detail based on the detailed data of the element characteristics. The one or more example embodiments shown below are to help understand the embodiments of the present disclosure, and therefore, the spirit and scope of the present disclosure are not limited thereto or thereby.

[0174] Table 1 below shows the resonance thickness and external quantum efficiency of Comparative Example, Embodiment Example 1, and Embodiment Example 2.

[0175] The light receiving element can receive incident light incident thereto through the light receiving layer, can convert the received light into an electrical signal to identify an external input, and can change the driving state of the electronic device. Therefore, as the external quantum efficiency of the light receiving layer increases, the sensing sensitivity can be improved (for example, the sensing sensitivity can become excellent).

[0176] When with Figure 7When compared with the display module shown in , the display module according to the comparative example does not include an optical compensation layer, and includes a luminescent compensation layer disposed between the first hole transport region and the first light-emitting layer, between the first hole transport region and the second light-emitting layer, between the first hole transport region and the third light-emitting layer, and between the second hole transport region and the light-receiving layer. The portions of the luminescent compensation layer of the display module according to the comparative example that overlap with the first light-emitting region, the second light-emitting region, and the third light-emitting region, respectively, have different thicknesses from each other, and the thickness of the portion of the luminescent compensation layer that overlaps with the light-receiving region is the same as the thickness of the portion of the luminescent compensation layer that overlaps with the second light-emitting region. In other words, when forming the display module according to the comparative example, the luminescent compensation layer that overlaps with the second light-emitting region and the luminescent compensation layer that overlaps with the light-receiving region are formed by the same process.

[0177] The display module according to the embodiment example 1 has Figure 7 The structure of the display module shown in FIG. 1 is shown in FIG. 2 , and the optical compensation layer is manufactured to include indium zinc oxide (IZO).

[0178] The display module according to Example 2 of the embodiment has Figure 7 The structure of the display module shown in FIG. 1 is shown in FIG. 2 , and the optical compensation layer is manufactured to include indium tin oxide (ITO).

[0179] The luminescent compensation layers of the comparative example, the embodiment example 1 and the embodiment example 2 have the same The resonance thickness of the comparative example, the embodiment example 1 and the embodiment example 2 has the same hole transport region of about The resonance thickness.

[0180] In the comparative example, the embodiment example 1, and the embodiment example 2, the center absorption wavelength of light absorbed by each light receiving layer was about 530 nm.

[0181] Table 1:

[0182]

[0183] According to Table 1, compared with the light receiving layer of the comparative example, the external quantum efficiency of the light receiving layer of Example 1 and Example 2 is reduced by about 0.2% and about 2.5%, respectively, and the external quantum efficiency of the light receiving layer of Example 1 and Example 2 is substantially the same. Therefore, there is no significant difference in the sensing sensitivity between the comparative example, Example 1 and Example 2. In the case of the display module of the comparative example, the luminescent compensation layer corresponding to the second light emitting area and the light receiving area is formed by the same process as described above. In this case, a fine metal mask (FMM) having an opening in each of the second light emitting area and the light receiving area is used to perform the patterning process. However, when forming a high-resolution display module, it is necessary to design a mask so that the luminescent compensation layer pattern formed in each of the areas corresponding to the first light emitting area and the third light emitting area is not superimposed with the luminescent compensation layer pattern formed in the second light emitting area and the light receiving area as a single integrated form. As a result, the process is complicated and the difficulty of manufacturing the display module is too high.

[0184] In addition, because the portion of the luminescent compensation layer overlapping the light receiving area and the portion of the luminescent compensation layer overlapping the second light emitting area are formed by the same process in the display module of the comparative example, lateral leakage current occurs between the light emitting element and the light receiving element of the second light emitting area through the luminescent compensation layer.

[0185] Unlike in the comparative example, according to Example 1 and Example 2, the luminescent compensation layer is not overlapped with the light receiving region, and the optical compensation layer instead of the luminescent compensation layer can be provided on the first light receiving electrode. Therefore, when compared with the comparative example, Example 1 and Example 2 have no substantial difference in the sensing sensitivity of the light receiving layer, and a complicated mask process is not required when forming the display module, and therefore, the difficulty of the display module manufacturing process can be reduced.

[0186] In addition, when compared with the comparative example, in Example 1 and Example 2, the luminescence compensation layer does not overlap with the light receiving region, and lateral leakage current does not occur between the light emitting element and the light receiving element through the luminescence compensation layer. Therefore, the efficiency of the light emitting element can be improved.

[0187] The foregoing is an explanation of some embodiments of the present disclosure and is not to be construed as limiting it. Although some embodiments have been described, it will be readily understood by those skilled in the art that various modifications may be made in the embodiments without departing from the spirit and scope of the present disclosure. It will be understood that, unless otherwise specified, the description of the features or aspects within each embodiment should generally be considered to be applicable to other similar features or aspects in other embodiments. Therefore, it is obvious to those of ordinary skill in the art that, unless otherwise specifically specified, the features, characteristics and / or elements described in conjunction with a particular embodiment may be used alone or in combination with the features, characteristics and / or elements described in conjunction with other embodiments. Therefore, it will be understood that the foregoing is an explanation of various example embodiments and is not to be construed as being limited to the specific embodiments disclosed herein, and various modifications to the disclosed embodiments and other example embodiments are intended to be included in the spirit and scope of the present disclosure as defined in the appended claims and their equivalents.

Claims

1. A display module, characterized in that: The display module comprises: Base layer; a pixel defining layer on the base layer and having a first opening and a second opening; and an element layer, comprising a light-emitting element and a light-receiving element, wherein the light-emitting element corresponds to the first opening and comprises a first light-emitting electrode on the base layer, a light-emitting layer on the first light-emitting electrode, and a second light-emitting electrode on the light-emitting layer, and the light-receiving element corresponds to the second opening and is distinguished from the light-emitting element by the pixel defining layer, Wherein, the light receiving element includes: a first light receiving electrode on the base layer; a light receiving layer on the first light receiving electrode; a second light receiving electrode on the light receiving layer; and an optical compensation layer between the first light receiving electrode and the light receiving layer and not overlapping with the first light emitting electrode in a plan view.

2. The display module according to claim 1, characterized in that: The optical compensation layer has a thickness equal to or greater than 250 angstroms and equal to or less than 330 angstroms.

3. The display module according to claim 1, characterized in that: The light-emitting element further includes: a first hole transport region between the first light-emitting electrode and the light-emitting layer; and a first electron transport region between the light-emitting layer and the second light-emitting electrode. The light receiving element further comprises: a second hole transport region between the optical compensation layer and the light receiving layer; and a second electron transport region between the light receiving layer and the second light receiving electrode, and The first hole transport region is integrated with the second hole transport region, and the first electron transport region is integrated with the second electron transport region.

4. The display module according to claim 3, characterized in that: The element layer further includes a cover layer on the second light emitting electrode and the second light receiving electrode.

5. The display module according to claim 4, characterized in that: The display module further includes: a packaging layer on the element layer to cover the light emitting element and the light receiving element; and Input sensing layer, on the packaging layer, Wherein, the encapsulation layer comprises at least one organic layer and at least one inorganic layer, and The input sensing layer includes an input sensing electrode positioned so as not to overlap with the light emitting element and the light receiving element in a plan view.

6. The display module according to claim 5, characterized in that: The light emitting element does not overlap the light receiving element in a plan view.

7. The display module according to claim 1, characterized in that: The light emitting layer is configured to emit first light traveling from the light emitting layer to the second light emitting electrode, and The light receiving layer is configured to absorb second light traveling from the second light receiving electrode to the light receiving layer.

8. A display module, characterized in that: The display module comprises: a first light emitting region, a second light emitting region, and a third light emitting region; Non-luminous area; light receiving area; Base layer; a first electrode on the substrate layer, and including a first-first light-emitting electrode corresponding to the first light-emitting region, a first-second light-emitting electrode corresponding to the second light-emitting region, a first-third light-emitting electrode corresponding to the third light-emitting region, and a first light-receiving electrode corresponding to the light-receiving region; an optical compensation layer directly on the first light receiving electrode and not overlapping the first-first light emitting electrode, the first-second light emitting electrode and the first-third light emitting electrode; a hole transport region, comprising a first hole transport region on the first-first light-emitting electrode, the first-second light-emitting electrode and the first-third light-emitting electrode, and a second hole transport region on the optical compensation layer; a first light emitting layer on the first hole transport region to correspond to the first light emitting region and configured to emit first-first light traveling from the first-first light emitting electrode to the first hole transport region; a second light emitting layer on the first hole transport region to correspond to the second light emitting region and configured to emit first-second light traveling from the first-second light emitting electrodes to the first hole transport region; a third light emitting layer on the first hole transport region to correspond to the third light emitting region and configured to emit first-third light traveling from the first-third light emitting electrodes to the first hole transport region; a light receiving layer on the second hole transport region and configured to absorb second light traveling from the second hole transport region to the optical compensation layer; an electron transport region on the first light emitting layer, the second light emitting layer, the third light emitting layer and the light receiving layer; and A second electrode is on the electron transport region.

9. The display module according to claim 8, characterized in that: The optical compensation layer has a thickness equal to or greater than 250 angstroms and equal to or less than 330 angstroms.

10. The display module according to claim 8, characterized in that: The display module further includes: a covering layer on the second electrode; an encapsulation layer on the cover layer and comprising at least one organic layer and at least one inorganic layer; an input sensing layer, on the encapsulation layer, and comprising an input sensing electrode corresponding to the non-light emitting area; and A color filter layer is on the input sensing layer.

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