Display device

Abstract

A display device can include a display panel and a sensor panel configured under the display panel, the sensor panel including a fingerprint sensor, a proximity sensor configured between the fingerprint sensor and a bezel of the sensor panel, and an illuminance sensor configured between the fingerprint sensor and the bezel of the sensor panel adjacent to the proximity sensor.

Description

Technical Field

[0001] This invention relates to a display device. Background Technology

[0002] Electronic devices that provide images to users, such as smartphones, digital cameras, laptops, navigators, and smart TVs, include display devices for displaying images. These display devices include display panels for generating images, input devices such as input sensors, cameras, and various sensors.

[0003] An input sensor is positioned on the display panel and senses the user's touch. A camera captures and stores external images. Sensors may include fingerprint sensors, proximity sensors, and illuminance sensors, etc.

[0004] A fingerprint sensor detects a fingerprint displayed on the display panel. A proximity sensor detects objects adjacent to the display device. The proximity sensor includes a light-emitting part that generates and outputs light (e.g., infrared light) and a light-receiving part that senses the light reflected by the object. An illuminance sensor senses the brightness around the display device. The fingerprint sensor, proximity sensor, and illuminance sensor are manufactured as separate modules and configured in the display device. Summary of the Invention

[0005] The purpose of this invention is to provide a display device that can integrate a fingerprint sensor, a proximity sensor, and an illuminance sensor into a single sensor panel.

[0006] The display device according to an embodiment of the present invention may include: a display panel; and a sensor panel disposed below the display panel, the sensor panel including: a fingerprint sensor; a proximity sensor disposed between the fingerprint sensor and the bezel of the sensor panel; and an illuminance sensor disposed between the fingerprint sensor and the bezel of the sensor panel and adjacent to the proximity sensor.

[0007] The display device according to an embodiment of the present invention may include: a display panel; a sensor panel disposed below the display panel; and an infrared blocking filter disposed between the display panel and the sensor panel. The sensor panel includes: a fingerprint sensor; a proximity sensor disposed between the fingerprint sensor and the bezel of the sensor panel; and an illuminance sensor disposed between the fingerprint sensor and the bezel of the sensor panel and adjacent to the proximity sensor. When viewed on a plane, the infrared blocking filter overlaps with the fingerprint sensor but does not overlap with the illuminance sensor or the proximity sensor.

[0008] (Invention Effects)

[0009] According to an embodiment of the present invention, the fingerprint sensor, proximity sensor, and illuminance sensor can be integrated into a single sensor panel without being manufactured as separate modules. Attached Figure Description

[0010] Figure 1 This is a perspective view of a display device according to an embodiment of the present invention.

[0011] Figure 2 yes Figure 1 Block diagram of the display device shown.

[0012] Figure 3 yes Figure 2 An exploded perspective view of the display device shown.

[0013] Figure 4 yes Figure 3 The diagram shows a floor plan of the display panel.

[0014] Figure 5 This is an illustrative example. Figure 4 The diagram shows a cross-section of the display panel.

[0015] Figure 6 yes Figure 3 The diagram shows a plan view of the sensor panel.

[0016] Figure 7 yes Figure 6 The equivalent circuit diagram of any photoelectric sensor shown is shown.

[0017] Figure 8 It is along Figure 6 The cross-sectional view taken by line II′ is shown.

[0018] Figure 9 It is a magnified view of the same Figure 6 The diagram shows the portion of the display panel corresponding to the first area AA1.

[0019] Figure 10 This is an illustrative example. Figure 9 The diagram shows a cross-section of any luminescent region and any infrared luminescent region.

[0020] Figure 11 as well as Figure 12 This is a diagram illustrating the configuration positions of proximity sensors and illuminance sensors according to various embodiments of the present invention.

[0021] Figure 13 This is a diagram illustrating the structure of a display panel of a display device according to another embodiment of the present invention.

[0022] Figure 14 It is shown Figure 13A diagram showing a portion of the first display area.

[0023] Figure 15 It is shown Figure 13 The diagram shows a portion of the third display area.

[0024] Figure 16 This is an illustrative example. Figure 14 A diagram showing any one of the transmission regions and the cross-section of the first pixel adjacent to the transmission region.

[0025] Figure 17 This is an illustrative example. Figure 15 A diagram showing any one of the transmission regions and a cross-section of the third pixel adjacent to the transmission region.

[0026] (Explanation of reference numerals in the attached diagram)

[0027] DD: Display device; DP: Display panel

[0028] SPN: Sensor panel FSN: Fingerprint sensor

[0029] PSN: Proximity sensor; LSN: Illuminance sensor

[0030] FIT: Infrared blocking filter; IRD: Infrared emitting element

[0031] OLED: Light-emitting elements TA1, TA2: First and second transmission regions

[0032] IR: Infrared Detailed Implementation

[0033] In this specification, when it is mentioned that a constituent element (or region, layer, part, etc.) is "on" another constituent element, "connected" to another constituent element, or "combined" with another constituent element, it means that the constituent element can be directly configured / connected / combined with the other constituent element, or a third constituent element can be configured between them.

[0034] The same reference numerals refer to the same constituent elements. Furthermore, in the drawings, the thickness, scale, and dimensions of the constituent elements are enlarged for the purpose of effectively illustrating the technical content.

[0035] "and / or" includes all combinations that can be defined by the relevant composition.

[0036] The terms "first," "second," etc., can be used to describe various constituent elements, but the constituent elements are not limited by the terms. The terms are used only to distinguish one constituent element from another. For example, without departing from the scope of the invention, a first constituent element may be named a second constituent element, and similarly, a second constituent element may be named a first constituent element. Singular expressions include plural expressions unless explicitly stated in the context.

[0037] Additionally, terms such as "below," "lower side," "above," and "upper side" are used to describe the relational relationships of the structures shown in the accompanying drawings. These terms are relative concepts and are explained based on the directions indicated in the accompanying drawings.

[0038] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, terms such as those defined in commonly used dictionaries shall be interpreted as having the same meaning in the context of the relevant art, and are explicitly defined herein, provided they are not interpreted as having an ideal or overly formal meaning.

[0039] Terms such as “including” or “having” should be understood as indicating the presence of features, numbers, steps, operations, constituent elements, components, or combinations thereof as described in the specification, and do not preclude the existence or additional possibilities of one or more other features, numbers, steps, operations, constituent elements, components, or combinations thereof.

[0040] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0041] Figure 1 This is a perspective view of a display device according to an embodiment of the present invention.

[0042] Reference Figure 1 According to an embodiment of the present invention, the display device DD may have a rectangular shape, wherein the rectangular shape has a long side extending in a first direction DR1 and a short side extending in a second direction DR2 intersecting the first direction DR1. However, it is not limited thereto, and the display device DD may have various shapes such as circles or polygons.

[0043] Hereinafter, the direction that substantially intersects the plane defined by the first direction DR1 and the second direction DR2 is defined as the third direction DR3. Furthermore, in this specification, "when viewed on a plane" can mean the state observed in the third direction DR3.

[0044] The top of the display device DD can be defined as the display surface DS, and can have a plane defined by a first direction DR1 and a second direction DR2. Through the display surface DS, the image IM generated by the display device DD can be provided to the user.

[0045] The display surface DS may include a display area DA and a non-display area NDA surrounding the display area DA. The display area DA may display an image, while the non-display area NDA may not display an image. The non-display area NDA may surround the display area DA and define the border of the display device DD printed in a predetermined color.

[0046] The display device DD can be used in large electronic devices such as televisions, monitors, or outdoor billboards. Additionally, the display device DD can also be used in small to medium-sized electronic devices such as personal computers, laptops, personal digital terminals, car navigation systems, game consoles, smartphones, tablets, or cameras. However, these are merely illustrative embodiments, and can be used in other electronic devices without departing from the concept of the invention.

[0047] Figure 2 yes Figure 1 Block diagram of the display device shown.

[0048] Reference Figure 2 According to an embodiment of the present invention, the display device DD may include a display module DM, a power supply module PM, a first electronic module EM1, a second electronic module EM2, and a sensor module SM. The display module DM, the power supply module PM, the first electronic module EM1, the second electronic module EM2, and the sensor module SM may be electrically connected to each other.

[0049] The power supply module (PM) provides the power required for the overall operation of the display device (DD). The power supply module (PM) may include a typical battery module.

[0050] The first electronic module EM1 and the second electronic module EM2 may include various functional modules for enabling the display device DD to operate. The first electronic module EM1 may be directly mounted on a motherboard that is electrically connected to the display module DM, or mounted on a separate substrate and electrically connected to the motherboard via a connector (not shown).

[0051] The first electronic module EM1 may include a control module CM, a wireless communication module TM, an image input module IIM, an audio input module AIM, a memory MM, and an external interface IF. A portion of the module may not be mounted on the motherboard, but may be electrically connected to the motherboard via a flexible circuit board.

[0052] The control module CM controls the overall operation of the display device DD. The control module CM can activate or deactivate the display module DM. The control module CM can control other modules such as the image input module IIM or the audio input module AIM based on touch signals received from the display module DM. The control module CM can also control the operation of the display device DD in response to signals sensed by the sensor module SM.

[0053] The wireless communication module TM can transmit / receive wireless signals with other terminals via Bluetooth or Wi-Fi. The wireless communication module TM can also transmit / receive voice signals via ordinary communication lines. The wireless communication module TM may include a transmitting unit TM1 that modulates and transmits the signal to be transmitted, and a receiving unit TM2 that demodulates the received signal.

[0054] The Image Input Module (IIM) processes image signals and converts them into image data that can be displayed on the Display Module (DM). The Audio Input Module (AIM) receives external audio signals via a microphone and converts them into electronic voice data in recording mode or voice recognition mode.

[0055] The external interface (IF) can serve as an interface for connecting to external chargers, wired / wireless data ports, and card slots (e.g., memory card, SIM / UIM card).

[0056] The second electronic module EM2 may include an audio output module AOM and a camera module CMM. The audio output module AOM and the camera module CMM can be directly mounted on the motherboard or mounted on a separate substrate and electrically connected to the display module DM or the first electronic module EM1 via connectors (not shown).

[0057] The audio output module AOM can convert audio data received from the wireless communication module TM or the audio data stored in the memory MM and output it to the outside. The camera module CMM can capture external images.

[0058] Yes, the sensor module SM can include a sensor panel SPN, which includes a fingerprint sensor FSN, a proximity sensor PSN, and an illuminance sensor LSN. The fingerprint sensor FSN, proximity sensor PSN, and illuminance sensor LSN can be configured in a single sensor panel SPN.

[0059] The fingerprint sensor FSN can sense the fingerprint displayed on the display module DM. The control module CM can receive the fingerprint information sensed by the fingerprint sensor FSN and use the received fingerprint information to implement user authentication mode.

[0060] The proximity sensor (PSN) can detect objects around the display device (DD). The control module (CM) can then control the operation of the display module (DD) based on the information sensed by the PSN. For example, if the display device (DD) is a mobile phone, when a user holds the phone to their ear for a call, the control module (CM) can turn off the screen of the display device (DD) to reduce power consumption.

[0061] The illuminance sensor LSN can sense the brightness around the display device DD. The control module CM can control the operation of the display module DM based on the information sensed by the illuminance sensor LSN. For example, when the ambient brightness is high, the control module CM can increase the brightness of the light generated by the display module DM, and when the ambient brightness is low, the control module CM can decrease the brightness of the light generated by the display module DM.

[0062] The display module (DM) may include a display panel (DP) and an input sensing unit (ISP). The display panel (DP) can display images using image data provided by the control module (CM).

[0063] Alternatively, the input sensing unit (ISP) can sense external input (such as a user's hand or a stylus), and the sensed signal can be transmitted as an input signal to the control module (CM). The control module (CM) can then respond to the input signal to control the operation of the display panel (DP).

[0064] Figure 3 yes Figure 2 An exploded perspective view of the display device shown.

[0065] Illustratively, Figure 3 It shows Figure 2 This is a part of the structure of the various modules shown.

[0066] Reference Figure 3 The display device DD may include a display panel DP, an input sensing unit ISP, a window WIN, an infrared blocking filter FIT, and a sensor panel SPN. Alternatively, the input sensing unit ISP may be disposed on the display panel DP, and the window WIN may be disposed on the input sensing unit ISP. Or, the infrared blocking filter FIT may be disposed below the display panel DP, and the sensor panel SPN may be disposed below the infrared blocking filter FIT.

[0067] The display panel DP can be a flexible display panel. For example, the display panel DP may include multiple electronic components disposed on a flexible substrate. According to an embodiment of the present invention, the display panel DP can be a light-emitting display panel.

[0068] Display panel DP can be an organic light-emitting display panel or a quantum dot light-emitting display panel. The light-emitting layer of an organic light-emitting display panel can contain organic light-emitting materials. The light-emitting layer of a quantum dot light-emitting display panel can include quantum dots and quantum rods, etc. Hereinafter, display panel DP refers to organic light-emitting display panels.

[0069] The input sensing unit (ISP) may include multiple sensor units (not shown) for sensing external inputs. The sensor units may sense the external inputs capacitively. During the manufacturing of the display panel (DP), the input sensing unit (ISP) may be directly fabricated on the display panel (DP). However, it is not limited to this; the input sensing unit (ISP) may also be fabricated as a separate panel from the display panel (DP) and attached to the display panel (DP) by adhesive.

[0070] The WIN window protects the display panel (DP) and input sensor (ISP) from external scratches and impacts. The image generated by the display panel (DP) can be transmitted to the user through the WIN window.

[0071] Although not shown, the display device DD may also include an anti-reflective layer disposed between the window WIN and the input sensing unit ISP to prevent reflection of external light. The anti-reflective layer can reduce the reflectivity of external light incident from above the display device DD toward the display panel DP.

[0072] The infrared blocking filter (FIT) can block infrared light from external sources. Infrared light coming from the outside toward the sensor panel (SPN) can be blocked by the infrared blocking filter (FIT).

[0073] A sensor panel (SPN) may include multiple photoelectric sensors for sensing light. Each photoelectric sensor may include a photodiode. The SPN may be categorized into a fingerprint sensor (FSN), a proximity sensor (PSN), and an illuminance sensor (LSN) based on the configuration area. The structure of this SPN will be described in detail below. The fingerprint sensor (FSN), proximity sensor (PSN), and illuminance sensor (LSN) may all include photodiodes as common components.

[0074] Figure 4 yes Figure 3 The diagram shows a floor plan of the display panel.

[0075] Reference Figure 4The display device DD may include a display panel DP, a scan driver SDV, a data driver DDV, and an emission driver EDV. The display panel DP may have a rectangular shape, having a long side extending in a first direction DR1 and a short side extending in a second direction DR2, but the shape of the display panel DP is not limited to this. The display panel DP may include a display area DA and a non-display area NDA surrounding the display area DA.

[0076] The display panel DP may include multiple pixels PX, multiple scan lines SL1~SLm, multiple data lines DL1~DLn, multiple light-emitting lines EL1~Elm, first and second control lines CSL1, CSL2, first and second power lines PL1, PL2, connection lines CNL, and multiple pads P. m and n are natural numbers.

[0077] Pixels (PX) can be configured in the display area (DA). The scan driver (SDV) and the light-emitting driver (EDV) can be configured in non-display areas (NDA) adjacent to the long sides of the display panel (DP), respectively. The data driver (DDV) can be configured in a non-display area (NDA) adjacent to any one of the short sides of the display panel (DP). When viewed on a flat surface, the data driver (DDV) can be adjacent to the bottom edge of the display panel (DP). The data driver (DDV) can be fabricated as an integrated circuit chip and mounted on the display panel (DP).

[0078] Scan lines SL1 to SLm can extend in the second direction DR2 and connect to the pixel PX and the scan drive unit SDV. Data lines DL1 to DLn can extend in the first direction DR1 and connect to the pixel PX and the data drive unit DDV. Light emission lines EL1 to Elm can extend in the second direction DR2 and connect to the pixel PX and the light emission drive unit EDV.

[0079] The first power line PL1 can extend in the first direction DR1 and be disposed in the non-display area NDA. The first power line PL1 can be disposed between the display area DA and the light-emitting drive unit EDV, but is not limited thereto; the first power line PL1 can be disposed between the display area DA and the scan drive unit SDV.

[0080] The connecting line CNL can extend in the second direction DR2 and be aligned in the first direction DR1. The connecting line CNL can be connected to the first power line PL1 and the pixel PX. A first voltage can be applied to the pixel PX through the interconnected first power line PL1 and connecting line CNL.

[0081] The connecting line CNL can be integrally formed with and extend from the first power line PL1. However, it is not limited to this; the connecting line CNL can be disposed in a different layer from the first power line PL1 and connected to the first power line PL1 via a separate connecting electrode. The connecting line CNL can also refer to the first power line PL1.

[0082] The second power line PL2 can be configured in the non-display area NDA. The second power line PL2 can extend along the long side of the display panel DP and the other short side of the display panel DP where the data driver unit DDV is not configured. The second power line PL2 can be configured at a location peripheral to the scan driver unit SDV and the light-emitting driver unit EDV.

[0083] Although not shown, a second power line PL2 may extend toward the display area DA and connect to the pixel PX. A second voltage having a level lower than the first voltage may be applied to the pixel PX through the second power line PL2.

[0084] The first control line CSL1 can be connected to the scan driver unit SDV and extends towards the lower end of the display panel DP when viewed in a flat surface. The second control line CSL2 can be connected to the light-emitting driver unit EDV and extends towards the lower end of the display panel DP when viewed in a flat surface. The data driver unit DDV can be disposed between the first control line CSL1 and the second control line CSL2.

[0085] Pad P can be configured on the display panel DP adjacent to the lower end of the display panel DP. The data driver unit DDV, the first power line PL1, the second power line PL2, the first control line CSL1, and the second control line CSL2 can be connected to pad P. Alternatively, data lines DL1 to DLn can be connected to the data driver unit DDV, and the data driver unit DDV can be connected to pad P corresponding to the data lines DL1 to DLn.

[0086] Although not shown, the display device DD may include a timing controller for controlling the operation of the scan drive unit SDV, the data drive unit DDV, and the light emission drive unit EDV, as well as a voltage generation unit for generating first and second voltages. The timing controller and the voltage generation unit may be connected to the pad P.

[0087] The timing controller can generate scan control signals, data control signals, and illumination control signals. The scan control signal can be provided to the scan driver unit (SDV) via the first control line CSL1. The illumination control signal can be provided to the illumination driver unit (EDV) via the second control line CSL2. The data control signal can be provided to the data driver unit (DDV). The timing controller can also provide image signals to the data driver unit (DDV).

[0088] Alternatively, the scan drive unit (SDV) may generate multiple scan signals in response to a scan control signal, and these scan signals may be applied to the pixel PX through scan lines SL1 to SLm. Or, the light emission drive unit (EDV) may generate multiple light emission signals in response to a light emission control signal, and these light emission signals may be applied to the pixel PX through light emission lines EL1 to Elm.

[0089] The data drive unit DDV can generate multiple data voltages corresponding to the image signal in response to the data control signal. The data voltages can be applied to the pixel PX through data lines DL1 to DLn.

[0090] A pixel (PX) can receive data voltage in response to a scan signal. A pixel (PX) can display an image by emitting light of a brightness corresponding to the data voltage in response to a light emission signal. The emission time of a pixel (PX) can be controlled by the light emission signal.

[0091] Figure 5 This is an illustrative example. Figure 4 The diagram shows a cross-section of the display panel.

[0092] Illustratively, Figure 5 The image shows a cross-section of the display panel DP as viewed in the first direction DR1.

[0093] Reference Figure 5 The display panel DP may include a substrate SUB, a circuit element layer DP-CL disposed on the substrate SUB, a display element layer DP-OLED disposed on the circuit element layer DP-CL, and a thin film encapsulation layer TFE disposed on the display element layer DP-OLED.

[0094] The substrate SUB may include a display area DA and a non-display area NDA surrounding the display area DA. A display element layer DP-OLED may be disposed on the display area DA. The substrate SUB may contain a flexible plastic material such as polyimide (PI).

[0095] Multiple pixels can be configured in the circuit element layer DP-CL and the display element layer DP-OLED. Each pixel may include at least one transistor configured in the circuit element layer DP-CL and a light-emitting element configured in the display element layer DP-OLED and connected to the transistor.

[0096] A thin-film encapsulation layer (TFE) can be disposed on the circuit element layer (DP-CL) to cover the display element layer (DP-OLED). The TFE can include an inorganic layer, an organic layer, and another inorganic layer stacked sequentially. The inorganic layer can contain inorganic materials and protect the pixels from moisture / oxygen. The organic layer can contain organic materials and protect the pixels from foreign matter such as dust particles.

[0097] When manufacturing a display device (DD), the input sensing unit (ISP) can be directly mounted on the thin-film encapsulation layer (TFE).

[0098] Figure 6 yes Figure 3 The diagram shows a plan view of the sensor panel. Figure 7 yes Figure 6 The equivalent circuit diagram of any photoelectric sensor shown is shown.

[0099] Reference Figure 6 The sensor panel SPN may include an active area AA and a non-active area NAA surrounding the active area AA. The non-active area NAA may surround the active area AA.

[0100] The sensor panel SPN may include multiple photoelectric sensors PS1, PS2, and PS3. Photoelectric sensors PS1, PS2, and PS3 may be configured in the active area AA. Although not shown, processing circuitry for processing the sensed signals output from photoelectric sensors PS1, PS2, and PS3 may be connected to the sensor panel SPN.

[0101] Reference Figure 7 Each photoelectric sensor PS1, PS2, and PS3 may include a photodiode PD, a switching transistor ST, and a storage capacitor Cst. The anode of the photodiode PD may be connected to the first wiring LI1, and the cathode of the photodiode PD may be connected to the source of the switching transistor ST. The driving voltage Vd can be supplied to the photodiode PD through the first wiring LI1.

[0102] The storage capacitor Cst can be connected to the source of the second wiring LI2 and the switching transistor ST. A storage voltage Vcst can be applied to the second wiring LI2.

[0103] It is possible that the gate of the switching transistor ST is connected to the third wiring LI3, and the drain of the switching transistor ST is connected to the fourth wiring LI4.

[0104] Yes, the photodiode PD is driven, and the photodiode PD converts externally incident light energy into electrical energy. The storage capacitor Cst can store the electrical energy as charge.

[0105] Alternatively, the switching signal SS can be applied to the switching transistor ST through the third wiring LI3, causing the switching transistor ST to conduct. The charge accumulated in the storage capacitor Cst can be output as a sense signal Rx through the conducting switching transistor ST and the fourth wiring LI4. The fourth wiring LI4 can be defined as a lead-out wiring.

[0106] Reference Figure 6The sensor panel SPN may include a fingerprint sensor FSN, a proximity sensor PSN, and an illuminance sensor LSN. The fingerprint sensor FSN, proximity sensor PSN, and illuminance sensor LSN may be configured within the active area AA. Example, the area configured with the fingerprint sensor FSN is defined as a quadrilateral area, but the area configured with the fingerprint sensor FSN is not limited to this.

[0107] The proximity sensor (PSN) can be configured between the fingerprint sensor (FSN) and the sensor panel (SPN) bezel. The illuminance sensor (LSN) can be configured between the fingerprint sensor (FSN) and the sensor panel (SPN) bezel and adjacent to the proximity sensor (PSN). Both the proximity sensor (PSN) and the illuminance sensor (LSN) can be adjacent to the sensor panel (SPN) bezel.

[0108] When viewed on a flat surface, the proximity sensor PSN can be configured to be adjacent to the top of the sensor panel SPN. When viewed on a flat surface, the illuminance sensor LSN can be configured to be adjacent to the left and right sides of the sensor panel SPN.

[0109] The fingerprint sensor FSN, proximity sensor PSN, and illuminance sensor LSN may include photoelectric sensors PS1, PS2, and PS3. The fingerprint sensor FSN may include multiple first photoelectric sensors PS1 from among the photoelectric sensors PS1, PS2, and PS3. The proximity sensor PSN may include multiple second photoelectric sensors PS2 from among the photoelectric sensors PS1, PS2, and PS3. The illuminance sensor LSN may include multiple third photoelectric sensors PS3 from among the photoelectric sensors PS1, PS2, and PS3.

[0110] In essence, the photoelectric sensors PS1, PS2, and PS3 can be classified according to their configuration positions as the first photoelectric sensor PS1 of the fingerprint sensor FSN, the second photoelectric sensor PS2 of the proximity sensor PSN, and the third photoelectric sensor PS3 of the illuminance sensor LSN.

[0111] Figure 8 It is along Figure 6 The cross-sectional view taken by line II′ is shown.

[0112] Reference Figure 8 Alternatively, a window WIN may be disposed on the input sensing unit ISP, and a first adhesive layer AL1 may be disposed between the window WIN and the input sensing unit ISP. The window WIN may be attached to the input sensing unit ISP through the first adhesive layer AL1.

[0113] Alternatively, a sensor panel (SPN) can be positioned below the display panel (DP), with an infrared blocking filter (FIT) positioned between the display panel (DP) and the sensor panel (SPN). When viewed on a flat surface, the infrared blocking filter (FIT) can overlap with the fingerprint sensor (FSN).

[0114] The infrared blocking filter (FIT) does not need to be configured on the proximity sensor (PSN). Therefore, when viewed on a flat surface, the infrared blocking filter (FIT) does not need to overlap with the proximity sensor (PSN).

[0115] The infrared blocking filter (FIT) may not be configured on the illuminance sensor (LSN). Therefore, when viewed on a flat surface, the infrared blocking filter (FIT) may not overlap with the illuminance sensor (LSN).

[0116] A second adhesive layer AL2 may be disposed between the display panel DP and the sensor panel SPN. The second adhesive layer AL2 may also be disposed between the display panel DP and the infrared blocking filter FIT. A third adhesive layer AL3 may be disposed between the infrared blocking filter FIT and the sensor panel SPN.

[0117] The display panel (DP) can be attached to the sensor panel (SPN) and the infrared blocking filter (FIT) via a second adhesive layer (AL2). The infrared blocking filter (FIT) can be attached to the sensor panel (SPN) via a third adhesive layer (AL3).

[0118] The first, second, and third adhesive layers AL1, AL2, and AL3 can contain various adhesives such as optically clear adhesives or pressure-sensitive adhesives.

[0119] When viewed on a flat surface, the active area AA of the sensor panel SPN can overlap with the display area DA of the display panel DP. When viewed on a flat surface, the inactive area NAA of the sensor panel SPN can overlap with the non-display area NDA of the display panel DP. When viewed on a flat surface, the fingerprint sensor FSN, the proximity sensor PSN, and the illuminance sensor LSN can overlap with the display area DA.

[0120] The display panel DP may include at least one infrared emitting element IRD configured in the display area DA to generate infrared light IR. When viewed in a flat plane, the infrared emitting element IRD may be adjacent to the non-display area NDA. When viewed in a flat plane, the infrared emitting element IRD may overlap with the proximity sensor PSN.

[0121] The fingerprint sensor FSN can sense the fingerprint FNT provided by the finger FN on the display panel DP. Light generated by the pixels PX arranged in the display area DA can be provided to the fingerprint FNT and reflected by the fingerprint FNT. The light reflected by the fingerprint FNT can be provided to the fingerprint sensor FSN. The fingerprint sensor FSN can sense the fingerprint FNT by the light reflected by the fingerprint FNT.

[0122] The light (infrared) IR generated by the infrared light-emitting element IRD can be reflected by an object OBT approaching the display device DD and sensed by the proximity sensor PSN. The infrared light-emitting element IRD can be defined as the light-emitting part, and the proximity sensor PSN can be defined as the light-receiving part. In essence, the object OBT approaching the display device DD can be sensed by both the infrared light-emitting element IRD and the proximity sensor PSN.

[0123] An external light source (OL) can provide illumination to an illuminance sensor (LSN). The illuminance sensor (LSN) can sense the brightness of the external light source (OL).

[0124] When the infrared light OL_IR from the external light OL passes through the fingerprint FNT and is provided to the fingerprint sensor FSN, the fingerprint FNT may not be detected properly. The infrared blocking filter FIT can prevent the infrared light OL_IR from the external light OL from being provided to the fingerprint sensor FSN.

[0125] The infrared blocking filter (FIT) is not located on the proximity sensor (PSN), so infrared (IR) light can be provided to the PSN. Furthermore, the infrared blocking filter (FIT) is not located on the illuminance sensor (LSN), so the infrared (OL_IR) light from the external light source (OL) is not blocked on the LSN, resulting in an increase in the amount of light received by the LSN.

[0126] Figure 9 It is a magnified view of the same Figure 6 The diagram shows a partial view of the display panel corresponding to the first region AA1.

[0127] Reference Figure 9 The display area DA can include multiple light-emitting areas PA1, PA2, PA3 and non-light-emitting areas NPA surrounding each light-emitting area PA1, PA2, PA3. The light-emitting areas PA1, PA2, PA3 can be arranged in the first diagonal direction DDR1 and the second diagonal direction DDR2.

[0128] The first diagonal direction DDR1 can be defined as a direction intersecting the first and second directions DR1 and DR2 on the plane defined by the first and second directions DR1 and DR2. The second diagonal direction DDR2 can be defined as a direction intersecting the first diagonal direction DDR1 on the plane defined by the first and second directions DR1 and DR2.

[0129] The light-emitting areas PA1, PA2, and PA3 may include multiple first light-emitting areas PA1 that display red, multiple second light-emitting areas PA2 that display green, and multiple third light-emitting areas PA3 that display blue.

[0130] It is permissible that the third luminous region PA3 is larger than the first luminous region PA1, and the first luminous region PA1 is larger than the second luminous region PA2. The first, second, and third luminous regions PA1, PA2, and PA3 can have a rhomboid shape, but their shapes are not limited to this.

[0131] A first light-emitting element OLED1 can be disposed in the first light-emitting region PA1. A second light-emitting element OLED2 can be disposed in the second light-emitting region PA2. A third light-emitting element OLED3 can be disposed in the third light-emitting region PA3.

[0132] Figure 4 The pixel PX shown may include multiple red pixels, multiple green pixels, and multiple blue pixels. Red pixels may include a first light-emitting element OLED1. Green pixels may include a second light-emitting element OLED2. Blue pixels may include a third light-emitting element OLED3.

[0133] The display area DA may include multiple infrared emitting areas IRA. When viewed on a plane, each infrared emitting area IRA may have the same size as each second emitting area PA2. The infrared emitting areas IRA may be arranged on the first and second diagonal directions DDR1, DDR2 between a portion of the first emitting area PA1 and a portion of the third emitting area PA3. Although three infrared emitting areas IRA are illustrated, the number of infrared emitting areas IRA is not limited to this.

[0134] Infrared light-emitting elements (IRDs) can be configured in the infrared light-emitting region (IRA). When viewed on a flat surface, each infrared light-emitting element (IRD) can have the same size as each second light-emitting element (OLED2). The display device (DD) can include infrared pixels. Each infrared pixel can include an infrared light-emitting element (IRD).

[0135] Figure 10 This is an illustrative example. Figure 9 The diagram shows a cross-section of any luminescent region and any infrared luminescent region.

[0136] Reference Figure 10Pixels PX and infrared pixels IR-PX can be configured on the substrate SUB. The display area DA can include a light-emitting area PA corresponding to the pixel PX and a non-light-emitting area NPA surrounding the light-emitting area PA. The light-emitting area PA can be... Figure 9 Any one of the first, second, and third emitting regions PA1, PA2, and PA3 shown. The display area DA may include the infrared emitting region IRA corresponding to the infrared pixel IR-PX. The non-emitting region NPA may be configured around the infrared emitting region IRA.

[0137] A pixel PX may include a transistor TR and an OLED light-emitting element connected to the transistor TR. An infrared pixel IR-PX may include a transistor TR-1 and an infrared light-emitting element IRD connected to the transistor TR-1. The transistor TR of the pixel PX and the transistor TR-1 of the infrared pixel IR-PX have substantially the same structure; therefore, the structure of the transistor TR of the pixel PX will be mainly described below.

[0138] An OLED (Optical Display Cell) light-emitting element may include a first electrode AE, a second electrode CE, a hole control layer HCL, an electron control layer ECL, and an emissive layer EML. The first electrode AE ​​can be an anode electrode, and the second electrode CE can be a cathode electrode. Figure 9 Any one of the first, second, and third light-emitting elements OLED1, OLED2, and OLED3 shown.

[0139] An infrared light-emitting element (IRD) may include a first electrode AE, a second electrode CE, a hole control layer HCL, an electron control layer ECL, and an infrared light-emitting layer IR-EL. The first electrode AE, second electrode CE, hole control layer HCL, and electron control layer ECL of the infrared light-emitting element IRD can have the same structure as the first electrode AE, second electrode CE, hole control layer HCL, and electron control layer ECL of the light-emitting element. Therefore, the structure of the light-emitting element OLED will be mainly described below.

[0140] Although a single transistor TR is shown as an example of a pixel PX, in reality, a pixel PX may include multiple transistors for driving the light-emitting element OLED and at least one capacitor.

[0141] The substrate SUB may include a flexible plastic substrate. For example, the substrate SUB may contain transparent polyimide (PI). A buffer layer BFL, which is an inorganic layer, may be disposed on the substrate SUB. A semiconductor pattern may be disposed on the buffer layer BFL. The semiconductor pattern may contain polycrystalline silicon, but is not limited thereto; the semiconductor pattern may also contain amorphous silicon or metal oxide.

[0142] Semiconductor patterns can be doped with N-type or P-type dopants. Semiconductor patterns can include highly doped and lightly doped regions. The conductivity of the highly doped region can be greater than that of the lightly doped region, essentially functioning as the source and drain electrodes of a transistor (TR). The lightly doped region can essentially function as the active region (or channel) of the transistor.

[0143] The source (S), active region (A), and drain (D) of transistor TR can be formed from a semiconductor pattern. A first insulating layer (INS1) can be disposed on the semiconductor pattern. The gate (G) of transistor TR can be disposed on the first insulating layer (INS1). A second insulating layer (INS2) can be disposed on the gate (G). A third insulating layer (INS3) can be disposed on the second insulating layer (INS2).

[0144] The connecting electrode CNE can be configured between the transistor TR and the light-emitting element OLED to connect the transistor TR and the light-emitting element OLED. The connecting electrode CNE may include a first connecting electrode CNE1 and a second connecting electrode CNE2.

[0145] The first connecting electrode CNE1 can be disposed on the third insulating layer INS3 and connected to the drain electrode D through the first contact hole CH1 defined in the first to third insulating layers INS1 to INS3. The fourth insulating layer INS4 can be disposed on the first connecting electrode CNE1. A fifth insulating layer INS5 can be disposed on the fourth insulating layer INS4.

[0146] The second connecting electrode CNE2 can be disposed on the fifth insulating layer INS5. The second connecting electrode CNE2 can be connected to the first connecting electrode CNE1 through the second contact hole CH2 defined in the fifth insulating layer INS5. A sixth insulating layer INS6 can be disposed on the second connecting electrode CNE2. The first insulating layers INS1 to the sixth insulating layer INS6 can be inorganic or organic layers. The layer from the buffer layer BFL to the sixth insulating layer INS6 can be defined as the circuit element layer DP-CL.

[0147] A first electrode AE ​​may be disposed on the sixth insulating layer INS6. The first electrode AE ​​may be connected to a second connecting electrode CNE2 through a third contact hole CH3 defined in the sixth insulating layer INS6. A pixel defining film PDL may be disposed on the first electrode AE ​​and the sixth insulating layer INS6 to expose a predetermined portion of the first electrode AE. An opening PX_OP for exposing the predetermined portion of the first electrode AE ​​may be defined in the pixel defining film PDL.

[0148] The hole control layer HCL can be disposed on the first electrode AE ​​and the pixel defining film PDL. The hole control layer HCL can be disposed together in the light-emitting region PA and the non-light-emitting region NPA. The hole control layer HCL may include a hole transport layer and a hole injection layer.

[0149] The emissive layer (EML) can be configured on the hole control layer (HCL). The EML can be configured in the region corresponding to the opening (PX_OP). The EML can contain organic and / or inorganic materials. The EML can generate any of the following light colors: red, green, and blue.

[0150] The infrared emitting layer (IR-EL) can generate infrared radiation. The IR-EL can contain organic materials used to generate infrared radiation.

[0151] An electronic control layer (ECL) can be disposed on both the light-emitting layer (EML) and the hole control layer (HCL). The ECL can also be disposed together in the light-emitting region (PA) and the non-light-emitting region (NPA). The ECL may include an electron transport layer and an electron injection layer.

[0152] The second electrode CE can be disposed on the electronic control layer ECL. The second electrode CE can also be disposed together in the pixel PX. The layer disposed with the light-emitting element OLED and the infrared light-emitting element IRD can be defined as the display element layer DP-OLED.

[0153] The thin-film encapsulation layer TFE can be disposed on the light-emitting element OLED and the infrared light-emitting element IRD. The thin-film encapsulation layer TFE can be disposed on the second electrode CE to cover the pixel PX and the infrared pixel IR-PX. The thin-film encapsulation layer TFE may include a first encapsulation layer EN1 disposed on the second electrode CE, a second encapsulation layer EN2 disposed on the first encapsulation layer EN1, and a third encapsulation layer EN3 disposed on the second encapsulation layer EN2.

[0154] The first and third encapsulation layers EN1 and EN3 can be inorganic layers, while the second encapsulation layer EN2 can be an organic layer. The first and third encapsulation layers EN1 and EN3 protect the pixel PX from moisture / oxygen. The second encapsulation layer EN2 protects the pixel PX from foreign matter such as dust particles.

[0155] Alternatively, a first voltage can be applied to the first electrode AE ​​via a transistor TR, and a second voltage with a level lower than the first voltage can be applied to the second electrode CE. Or, holes and electrons injected into each of the light-emitting layer EML and the infrared light-emitting layer IR-EL can recombine to form excitons, and as the excitons transition to the ground state, the light-emitting element OLED and the infrared light-emitting element IRD emit light.

[0156] As described above, the infrared light (IR) generated by the infrared light-emitting element (IRD) can be reflected by the object (OBT) and provided to the proximity sensor (PSN). In embodiments of the present invention, the infrared light for the proximity sensor PSN is generated by the display panel (DP), thus eliminating the need for a separate light-emitting module for generating the infrared light.

[0157] As a result, according to an embodiment of the present invention, the fingerprint sensor, proximity sensor and illuminance sensor are integrated into a single sensor panel, so the fingerprint sensor, proximity sensor and illuminance sensor do not need to be manufactured as separate modules.

[0158] Figure 11 as well as Figure 12 This is a diagram illustrating the configuration positions of proximity sensors and illuminance sensors according to various embodiments of the present invention.

[0159] Illustratively, Figure 11 as well as Figure 12 With Figure 6 The corresponding plane is shown.

[0160] Reference Figure 11 An illuminance sensor LSN_1 and a proximity sensor PSN_1 can be configured around the fingerprint sensor FSN. When viewed on a flat surface, the illuminance sensor LSN_1 can be adjacent to the left and right sides and the bottom edge of the sensor panel SPN_1. Alternatively, when viewed on a flat surface, the illuminance sensor LSN_1 can be configured in a predetermined portion of the sensor panel SPN_1 adjacent to the top edge. The configuration area of ​​the illuminance sensor LSN_1 can be larger than... Figure 6 The configuration area of ​​the illuminance sensor LSN is shown.

[0161] The proximity sensor PSN_1 can be configured in a predetermined portion of the sensor panel SPN_1 adjacent to the upper end of the sensor panel SPN_1. The proximity sensor PSN_1 can be configured around the illuminance sensor LSN_1. The configuration area of ​​the proximity sensor PSN_1 can be smaller than [the specified area]. Figure 6 The configuration area of ​​the proximity sensor PSN is shown.

[0162] Reference Figure 12 An illuminance sensor LSN_2 and a proximity sensor PSN_2 can be configured around the fingerprint sensor FSN_1. When viewed on a flat surface, the illuminance sensor LSN_2 can be adjacent to either the left or right side of the sensor panel SPN_2. For example, the illuminance sensor LSN_2 can be adjacent to the left side of the sensor panel SPN_2, but it is not limited to this; the illuminance sensor LSN_2 can also be adjacent to the right side of the sensor panel SPN_2.

[0163] When viewed on a plane, the proximity sensor PSN_2 can be configured to be adjacent to the upper end of the sensor panel SPN_2.

[0164] Figure 13 This is a diagram illustrating the structure of a display panel of a display device according to another embodiment of the present invention. Figure 14 It is shown Figure 13 A diagram showing a portion of the first display area.

[0165] The following will be explained together as needed. Figure 6 The sensor panel shown.

[0166] Reference Figure 6 as well as Figure 13 When viewed on a flat surface, the display panel DP_1 may include a display area DA and a non-display area NDA surrounding the display area DA. The non-display area NDA may surround the display area DA. The display area DA may include a first display area DA1, a second display area DA2 surrounding the first display area DA1, and a third display area DA3 surrounding the second display area DA2.

[0167] The second display area DA2 may surround the first display area DA1. The third display area DA3 may be adjacent to the non-display area NDA. The third display area DA3 may be configured between the second display area DA2 and the non-display area NDA.

[0168] A camera (CAM) can be configured below the first display area DA1. Furthermore, a plurality of first pixels (PX1) can be configured within the first display area DA1. A plurality of first transmissive areas (TA1) without first pixels (PX1) can be defined within the first display area DA1. The first transmissive areas (TA1) can be arranged in a first direction DR1 and a second direction DR2. First pixels (PX1) can be configured around each of the first transmissive areas (TA1). For example, first pixels (PX1) can be configured between the first transmissive areas (TA1).

[0169] Multiple second pixels PX2 can be configured in the second display area DA2. The structure of the second pixel PX2 can be substantially the same as the structure of the first pixel PX1. Multiple third pixels PX3 can be configured in the third display area DA3. The structure of the third pixel PX3 can be substantially the same as the structure of the first pixel PX1. The first, second, and third pixels PX1, PX2, and PX3 can include the aforementioned red, green, and blue pixels.

[0170] When viewed on a flat surface, a portion of the third display area DA3 adjacent to the upper end of the display panel DP_1 can overlap with the proximity sensor PSN. For overlap with the proximity sensor PSN, at least one infrared pixel IR-PX can be configured in the portion of the third display area DA3 adjacent to the upper end of the display panel DP_1. When viewed on a flat surface, portions of the third display area DA3 adjacent to the left and right sides of the display panel DP_1 can overlap with the illuminance sensor LSN. When viewed on a flat surface, the second display area DA2 can overlap with the fingerprint sensor FSN.

[0171] Figure 15 It is shown Figure 13 The diagram shows a portion of the third display area.

[0172] Reference Figure 15 The third display area DA3 may be configured with multiple third pixels PX3 and at least one infrared pixel IR-PX. Multiple second transmissive areas TA2 without third pixels PX3 may be defined within the third display area DA3. The second transmissive areas TA2 may be arranged in a first direction DR1 and a second direction DR2. A first pixel PX1 may be disposed between the second transmissive areas TA2.

[0173] Illustratively, Figure 15 The diagram shows a portion of the third display area DA3 that overlaps with the proximity sensor PSN. Although not shown, the portion of the third display area DA3 that overlaps with the illuminance sensor LSN may also have a similar shape. Figure 15 The structure shown is the same as the structure shown.

[0174] Figure 16 This is an illustrative example. Figure 14 A diagram showing any one of the transmission regions and the cross-section of the first pixel adjacent to the transmission region. Figure 17 This is an illustrative example. Figure 15 A diagram showing any one of the transmission regions and a cross-section of the third pixel adjacent to the transmission region.

[0175] Illustratively, in Figure 16 as well as Figure 17 In the diagram, the circuit element layer DP-CL is shown as a single layer.

[0176] Reference Figure 16 A camera (CAM) can be configured below the first display area DA1. The cross-sectional structure of the first pixel PX1 can be substantially the same as... Figure 10 The cross-sectional structure of the pixel PX shown is the same.

[0177] The first transmission region TA1 may not contain an OLED light-emitting element. A predetermined image can be displayed through the first pixel PX1. Additionally, the camera CAM can receive external light OL through the first transmission region TA1 to capture external images.

[0178] Reference Figure 17 A proximity sensor (PSN) or an illuminance sensor (LSN) can be configured below the third display area (DA3). The cross-sectional structure of the third pixel (PX3) can be substantially the same as... Figure 10 The cross-sectional structure of the pixel PX shown is the same.

[0179] The second transmission region TA2 may not contain an OLED light-emitting element. A predetermined image can be displayed through the third pixel PX3. Furthermore, the proximity sensor PSN or the illuminance sensor LSN can receive infrared (IR) or external light (OL) through the second transmission region TA2. Since the second transmission region TA2 does not contain an OLED light-emitting element, the amount of light provided to the proximity sensor PSN or the illuminance sensor LSN can be increased.

[0180] The above description refers to embodiments; however, those skilled in the art will understand that various modifications and alterations can be made to the present invention without departing from the spirit and scope of the invention as set forth in the claims. Furthermore, the embodiments disclosed in this invention are not intended to limit the technical concept of the invention, but should be interpreted as including all technical concepts within the scope of the claims and their equivalents within the scope of the invention.

Claims

1. A display device, wherein, include: A display panel, including a display area and a non-display area surrounding the display area; as well as The sensor panel is located below the display panel. The sensor panel includes: Fingerprint sensor; A proximity sensor is disposed between the fingerprint sensor and the bezel of the sensor panel; and An illumination sensor is disposed between the fingerprint sensor and the bezel of the sensor panel and adjacent to the proximity sensor. The first border of the sensor panel extends in a first direction, and the second border of the sensor panel extends in a second direction intersecting the first direction. When viewed on a flat surface, the proximity sensor is positioned between the second bezel and the fingerprint sensor, and the illuminance sensor is positioned between the first bezel and the fingerprint sensor. The fingerprint sensor, the proximity sensor, and the illuminance sensor are all superimposed on the display area.

2. The display device according to claim 1, wherein, The fingerprint sensor, the proximity sensor, and the illuminance sensor each include at least one photoelectric sensor.

3. The display device according to claim 1, wherein, The proximity sensor and the illuminance sensor are adjacent to the frame of the sensor panel.

4. The display device according to claim 1, wherein, The display area includes at least one pixel and an infrared light-emitting element.

5. The display device according to claim 4, wherein, When viewed on a flat surface, the infrared emitting element overlaps with the proximity sensor.

6. The display device according to claim 4, wherein, The infrared light-emitting element is adjacent to the non-display area.

7. The display device according to claim 4, wherein, The at least one pixel includes: Red pixels; Green pixels; and Blue pixels, When viewed on a flat surface, the infrared light-emitting element has the same size as the light-emitting element of the green pixel.

8. The display device according to claim 1, wherein, The display device further includes: An infrared blocking filter is disposed between the display panel and the sensor panel, and when viewed in a plane, the infrared blocking filter overlaps with the fingerprint sensor.

9. The display device according to claim 8, wherein, When viewed on the plane, the infrared blocking filter does not overlap with the illuminance sensor.

10. The display device according to claim 8, wherein, When viewed on the plane, the infrared blocking filter does not overlap with the proximity sensor.

11. The display device according to claim 1, wherein, When viewed on a flat surface, the proximity sensor is adjacent to the upper end of the sensor panel.

12. The display device according to claim 11, wherein, When viewed on the plane, the illuminance sensor is adjacent to the left and right sides of the sensor panel.

13. The display device according to claim 11, wherein, When viewed on the plane, the illuminance sensor is adjacent to the left and right sides of the sensor panel and the bottom of the sensor panel.

14. The display device according to claim 11, wherein, When viewed on the plane, the illuminance sensor is adjacent to one of the left or right sides of the sensor panel.

15. The display device according to claim 1, wherein, The display panel includes: The first display area includes a first transmissive area and a first pixel surrounding the first transmissive area; A second display area is configured around the first display area and includes a second pixel; and The third display area is disposed around the second display area and includes the second transmissive area and the third pixel surrounding the second transmissive area.

16. The display device according to claim 15, wherein, When viewed on a plane, the third display area overlaps with the illuminance sensor.

17. The display device according to claim 15, wherein, When viewed on a plane, the third display area overlaps with the proximity sensor.

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