Display apparatus and method of driving the same

Abstract

The present application relates to a method of driving a display apparatus and a display apparatus. The method of driving a display apparatus includes driving a display panel in an initial mode, the display panel including a sensing area defined above a fingerprint sensor; driving the sensing area with a first color pattern and a second color pattern, the second color pattern having a color different from a color of the first color pattern; sensing a fingerprint by the fingerprint sensor when the fingerprint is adjacent to the sensing area, the fingerprint sensor receiving light reflected by the fingerprint; determining whether the sensed fingerprint is a spoof fingerprint; and performing a user authentication mode when the sensed fingerprint is a normal fingerprint. The first color pattern has a light transmittance higher than a light transmittance of the second color pattern.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2020-0005448, filed on January 15, 2020, which is incorporated herein by reference for all purposes, as if fully set forth herein. Technical Field

[0003] Exemplary embodiments of the present invention generally relate to a display device and a method of driving the display device. Background Technology

[0004] Electronic devices that provide images to users (such as smartphones, digital cameras, laptops, navigation units, and smart TVs) include display devices for displaying images. Display devices include display panels that generate images, input devices such as input sensing components, and authentication devices such as fingerprint sensing units.

[0005] An input sensor is mounted on the display panel and senses the user's touch. The signal sensed by the input sensor is converted into an input signal. The display panel then provides the user with an image corresponding to the input signal from the input sensor.

[0006] When the display panel is driven in the initial mode, the fingerprint sensing unit senses the fingerprint of the finger that is in contact with the input sensing portion. The display device compares the fingerprint sensed by the fingerprint sensing unit with the user's fingerprint. When the sensed fingerprint matches the user's fingerprint, the display panel is driven in the main mode.

[0007] The information disclosed in this background section is only for understanding the background technology of the inventive concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0008] The present invention provides a display device with enhanced authentication security.

[0009] The present invention provides a method for driving the display device.

[0010] Additional features of the inventive concept will be set forth in the following description and will be apparent in part from the description, or may be learned by practice of the inventive concept.

[0011] An exemplary embodiment of the present invention provides a method for driving a display device, the method comprising: driving a display panel in an initial mode, the display panel including a sensing area defined above a fingerprint sensor; driving the sensing area with a first color pattern and a second color pattern, the second color pattern having a color different from the first color pattern; sensing a fingerprint by the fingerprint sensor when a fingerprint is near the sensing area, the fingerprint sensor receiving light reflected from the fingerprint; determining whether the sensed fingerprint is a copied fingerprint; and performing a user authentication mode when the sensed fingerprint is a normal fingerprint. The first color pattern has a higher light transmittance than the second color pattern.

[0012] An exemplary embodiment of the present invention also provides a display device comprising: a display panel including a sensing area, and driving the display panel in an initial mode and a main mode; a fingerprint sensor disposed below the sensing area, and sensing a fingerprint adjacent to the sensing area when the display panel is driven in the initial mode; and a control module controlling the operation of the display panel and the fingerprint sensor. The fingerprint sensor receives light provided to and reflected by the fingerprint in the sensing area and senses the fingerprint. When the display panel is driven in the initial mode, the control module drives the sensing area with a first color pattern and a second color pattern, the second color pattern having a color different from the first color pattern, and the first color pattern having a higher light transmittance than the second color pattern.

[0013] An exemplary embodiment of the present invention also provides a method for driving a display device, the method comprising: when a display module is touched to drive the display module in an initial mode, storing a touch position on the display module as a first touch position; when a fingerprint touch display module is provided with a fingerprint sensor, storing the touch position of a fingerprint as a second touch position, and sensing the fingerprint; when the first touch position and the second touch position are the same as each other, executing a first user authentication mode; and when the first touch position and the second touch position are different from each other, executing a second user authentication mode having an enhanced security mode compared to the first user authentication mode.

[0014] It should be understood that the above general description and the following detailed description are exemplary and illustrative, and are intended to provide further explanation of the claimed invention. Attached Figure Description

[0015] The above and other advantages of the present invention will become readily apparent when considered in conjunction with the accompanying drawings and with reference to the following detailed description.

[0016] Figure 1 This is a perspective view illustrating an exemplary embodiment of a display device according to a concept of the present invention.

[0017] Figure 2 It is shown Figure 1 A block diagram of the display device.

[0018] Figure 3 It is shown Figure 2 Block diagram of the control module.

[0019] Figure 4 It is shown Figure 3 An exploded 3D view of the display module.

[0020] Figure 5 It is along Figure 4 A sectional view taken by line I-I'.

[0021] Figure 6 It is shown schematically. Figure 5 A cross-sectional view of the display panel.

[0022] Figure 7 It is shown Figure 6 A floor plan of the display panel.

[0023] Figure 8 It is shown that... Figure 7 A cross-sectional view of the portion corresponding to the pixels.

[0024] Figure 9 It is shown Figure 4 A plan view of the input sensing section.

[0025] Figure 10 It is shown Figure 9 An enlarged view of the first region.

[0026] Figure 11 Is only shown Figure 10 A view of the first sensor section, the second sensor section, and the second connection section.

[0027] Figure 12 Is only shown Figure 10 The view of the first connecting part.

[0028] Figure 13 It is along Figure 10 The sectional view taken from line II-II'.

[0029] Figure 14 It is shown Figure 9 An enlarged view of the second region.

[0030] Figure 15 This is a flowchart illustrating a method for driving a display device according to an exemplary embodiment of the concept of the present invention.

[0031] Figure 16 This is a view showing the initial mode of the display module.

[0032] Figure 17 It is shown Figure 16 A view of the driving status of the sensing area on the display panel.

[0033] Figure 18 It is a view showing the path of light delivered to the skin.

[0034] Figure 19 It is shown in Figure 17 The view of the path of light generated in the sensing area and the output from the fingerprint sensor.

[0035] Figure 20 This is a flowchart illustrating a method for comparing a sensed fingerprint with a copied fingerprint.

[0036] Figure 21 It is shown Figure 15 The flowchart shows a method for determining whether a sensed fingerprint is a normal fingerprint.

[0037] Figure 22A , Figure 22B , Figure 22C , Figure 22D , Figure 22E and Figure 22F This is a view illustrating a first color pattern and a second color pattern according to various exemplary embodiments conceived in accordance with the present invention.

[0038] Figure 23 This is a flowchart illustrating a method for driving a display device according to an exemplary embodiment of the concept of the present invention.

[0039] Figure 24 This is a view showing a method for matching the sensed fingerprint with the user's fingerprint.

[0040] Figure 25 This is a flowchart illustrating a method for driving a display device according to an exemplary embodiment of the concept of the present invention. Detailed Implementation

[0041] In the following description, numerous specific details are set forth for purposes of explanation to provide a thorough understanding of various exemplary embodiments or implementations of the invention. As used herein, “implementation” and “method” are interchangeable terms and are non-limiting examples of apparatus or methods employing one or more inventive concepts disclosed herein. However, it will be apparent that various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. In other instances, well-known structures and apparatuses are shown in block diagram form to avoid unnecessarily obscuring the various exemplary embodiments. Furthermore, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, a particular shape, configuration, and characteristic of an exemplary embodiment may be used or implemented in another exemplary embodiment without departing from the inventive concept.

[0042] Unless otherwise stated, the exemplary embodiments shown should be understood as exemplary features providing details of variations in some ways in which the inventive concept can be implemented in practice. Therefore, unless otherwise stated, features, components, modules, layers, films, panels, regions and / or aspects (hereinafter individually or collectively referred to as “elements”) of various embodiments may be combined, separated, interchanged and / or rearranged in other ways without departing from the inventive concept.

[0043] The use of crosshairs and / or shading in the accompanying drawings is generally provided to clarify the boundaries between adjacent elements. Therefore, unless specified, the presence or absence of crosshairs or shading does not convey or indicate any preference or requirement for a particular material, material properties, size, scale, commonalities between the elements shown, and / or any other characteristics, properties, etc., of the elements. Furthermore, in the drawings, the dimensions and relative dimensions of elements may be exaggerated for clarity and / or descriptive purposes. A particular process sequence may be performed differently than is described when exemplary embodiments can be implemented differently. For example, two consecutively described processes may be performed substantially simultaneously or in the reverse order of their description. Furthermore, the same reference numerals denote the same elements.

[0044] When a component or layer is referred to as being "on" another component or layer, "connected to," or "attached to" another component or layer, it can be directly on, directly connected to, or directly attached to the other component or layer, or there can be an intermediate component or layer. However, when a component or layer is referred to as being "directly on" another component or layer, "directly connected to," or "directly attached to" another component or layer, there is no intermediate component or layer. Therefore, the term "connection" can refer to a physical connection, electrical connection, and / or fluid connection with or without an intermediate component. Furthermore, the D1, D2, and D3 axes are not limited to the three axes of a Cartesian coordinate system, such as the x-axis, y-axis, and z-axis, and can be interpreted in a broader sense. For example, the D1, D2, and D3 axes can be perpendicular to each other, or they can represent different directions that are not perpendicular to each other. For the purposes of this disclosure, “at least one of X, Y, and Z” and “at least one selected from the group consisting of X, Y, and Z” can be interpreted as X only, Y only, Z only, or any combination of two or more of X, Y, and Z, such as, for example, XYZ, XYY, YZ, and ZZ. As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0045] Although the terms “first,” “second,” etc., may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another. Therefore, without departing from the teachings of this disclosure, the first element discussed below may be referred to as the second element.

[0046] For descriptive purposes, spatial relative terms such as “below,” “under,” “below,” “down,” “above,” “above,” “higher,” “side” (e.g., as in “sidewall”), etc., may be used herein to describe the relationship between one element and another element (or multiple elements) as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, spatial relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture. For example, if the device in the drawings is flipped, an element described as “below” or “under” other elements or features will consequently be oriented “above” other elements or features. Thus, the exemplary term “below” can encompass both above and below orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or in other orientations), and therefore, the spatial relative descriptive terms used herein should be interpreted accordingly.

[0047] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context clearly indicates otherwise. Furthermore, when used in this specification, the terms “comprises,” “comprising,” “includes,” and / or “including” specify the presence of the described features, integrals, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than terms of degree, and, therefore, are used to allow for inherent deviations in measurements, calculated values, and / or provided values ​​that will be recognized by those skilled in the art.

[0048] Various exemplary embodiments are described herein with reference to cross-sectional views and / or exploded views as schematic diagrams of idealized exemplary embodiments and / or intermediate structures. Therefore, variations in the illustrated shapes should be expected, for example, due to manufacturing techniques and / or tolerances. Consequently, the exemplary embodiments disclosed herein should not necessarily be construed as limited to the specific shape of the shown areas, but should include, for example, deviations in shape due to manufacturing processes. In this way, the areas shown in the figures may be schematic in nature, and the shapes of these areas may not reflect the actual shape of the areas of the device, and are therefore not necessarily intended to be limiting.

[0049] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms, such as those defined in common dictionaries, shall be interpreted as having a meaning consistent with their meaning in the context of the relevant field, and shall not be interpreted in an idealized or overly formal sense unless expressly defined herein.

[0050] According to the implementation described herein, when a fingerprint is input to the display module, it is first determined whether the sensed fingerprint is a copied fingerprint, and then a user authentication mode is executed. Therefore, the authentication security of the display device can be enhanced.

[0051] As described herein, the location of a touch operation configured to drive the display module in the initial mode is compared with the touch location of the fingerprint sensor used to sense a fingerprint, and a first user authentication mode or an enhanced second user authentication mode compared to the first user authentication mode can be executed based on the comparison result. Therefore, the authentication security of the display device can be enhanced.

[0052] Additionally, when a fingerprint is detected, movement of the display module can also be sensed, and the fingerprint sensing can be combined with the detection of movement of the display module to execute either a first user authentication mode or a second user authentication mode. Therefore, another method for enhancing authentication security can be used to improve the authentication security of the display device.

[0053] The invention will now be described in detail with reference to the accompanying drawings.

[0054] Figure 1 This is a perspective view illustrating a display device DD according to an exemplary embodiment of the concept of the present invention.

[0055] Reference Figure 1 According to an exemplary embodiment of the present invention, the display device DD may have a rectangular shape defined by 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, the shape of the display device DD should not be limited to a rectangular shape, and the display device DD may have various shapes such as a circular shape or a polygonal shape.

[0056] In the following text, the direction that is substantially perpendicular to the plane defined by the first direction DR1 and the second direction DR2 may be referred to as the "third direction DR3".

[0057] The upper surface of the display device DD may be referred to as the "display surface DS", and may be a planar surface defined by a first direction DR1 and a second direction DR2. The image IM generated by the display device DD can be provided to the user through the display surface DS.

[0058] The display surface DS may include a display area DA and a non-display area NDA defined around the display area DA. The display area DA may display an image, and the non-display area NDA may not display an image. The non-display area NDA may surround the display area DA and may define an edge of the display device DS printed with a predetermined color.

[0059] The display device DD can be applied to large electronic products such as televisions, monitors, or billboards, as well as small and medium-sized electronic products such as personal computers, laptops, personal digital assistants, car navigation units, gaming units, smartphones, tablets, or cameras. These are merely examples, and therefore, the display device DD can be applied to other electronic devices as long as they do not depart from the inventive concept.

[0060] Figure 2 It is shown Figure 1 A block diagram of the display device DD.

[0061] Reference Figure 2The display device DD may include a display module DM, a power module PM, a first electronic module EM1, and a second electronic module EM2. The display module DM, the power module PM, the first electronic module EM1, and the second electronic module EM2 may be electrically connected to each other.

[0062] The power module PM provides power for all operations of the display device DD. The power module PM may include a standard battery module.

[0063] The first electronic module EM1 and the second electronic module EM2 may include various functional modules that drive the display device DD. The first electronic module EM1 may be directly mounted on the motherboard that is electrically connected to the display module DM, or it may be mounted on a separate substrate and then electrically connected to the motherboard via a connector (not shown).

[0064] 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. Some modules can be electrically connected to the motherboard via flexible circuit boards, without being mounted on the motherboard.

[0065] 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 provided from the display module DM. The control module CM can use fingerprint information provided from the display module DM to perform user authentication.

[0066] The wireless communication module TM can use Bluetooth or WiFi links to send / receive wireless signals to other terminals. The wireless communication module TM can use a universal communication cable to send / receive voice signals. The wireless communication module TM may include a transmitter TM1 and a receiver TM2, wherein the transmitter TM1 is configured to modulate the signal to be transmitted and is configured to transmit the modulated signal, and the receiver TM2 demodulates the signal applied to it.

[0067] The image input module (IIM) can process image signals and convert them into image data that can be displayed by the display module (DM). The audio input module (AIM) can receive external sound signals via a microphone in recording mode or voice recognition mode and convert these signals into electronic voice data.

[0068] The external interface IF can be used as an interface between the control module CM and external devices, such as external chargers, wired / wireless data ports, card slots (e.g., memory cards and SIM / UIM cards), etc.

[0069] The second electronic module EM2 may include an audio output module AOM, a light-emitting module LM, a light-receiving module LRM, and a camera module CMM. The module can be directly mounted on the motherboard, or it can be mounted on a separate substrate and then electrically connected to the display module DM via a connector (not shown), or it can be electrically connected to the first electronic module EM1.

[0070] The audio output module AOM can convert audio data provided by the wireless communication module TM or audio data stored in the memory MM, and can output the converted audio data to an external source. The light-emitting module LM can generate and output light. The light-emitting module LM can emit infrared light. The light-emitting module LM may include LED elements. The light-receiving module LRM can sense infrared light. When infrared light of a predetermined level or higher is sensed, the light-receiving module LRM can be activated. The light-receiving module LRM may include a complementary metal-oxide-semiconductor (CMOS) sensor.

[0071] Infrared light generated and output by the light-emitting module LM can be reflected by an external object (e.g., a user's finger or face), and the reflected infrared light can be incident on the light-receiving module LRM. The camera module CMM can capture an image of the external object.

[0072] The display module DM may include a display panel DP, an input sensing unit ISP, and a fingerprint sensor FSN. The display panel DP can display images using image data provided by the control module CM. The control module CM can drive the display module DM in an initial mode and a main mode thereafter. Specifically, the display panel DP can be driven in the initial mode and the main mode in response to the control of the control module CM, and therefore, the display panel DP can display the image corresponding to the initial mode and the image corresponding to the main mode.

[0073] In the initial mode, the control module CM can execute the user authentication mode. When the user is authenticated as the owner of the display device DD in the initial mode, the control module CM can drive the display panel DP in the main mode. In the main mode, the display panel DP can display various images as desired by the user. User authentication methods can be executed in various ways, such as fingerprint authentication, password authentication, and facial recognition authentication. In the following text, the fingerprint authentication method will be described as a user authentication method.

[0074] The input sensing unit (ISP) can sense external inputs, such as a user's hand or stylus, and send the sensed signals as input signals to the control module (CM). The control module (CM) can then control the operation of the display panel (DP) in response to the input signals.

[0075] When the display panel DP is driven in the initial mode, the fingerprint sensor FSN can sense the fingerprint of the finger touching the display module DM. The fingerprint information sensed by the fingerprint sensor FSN can be sent to the control module CM.

[0076] The control module CM can compare the sensed fingerprint information with the user's fingerprint information stored therein. When the sensed fingerprint information matches the user's fingerprint information, the control module CM can drive the display panel DP, causing the display panel DP to switch from the initial mode to the main mode.

[0077] Figure 3 It is shown Figure 2 Block diagram of the control module CM.

[0078] Reference Figure 3 The control module CM may include a main controller MC, a display panel controller DPC that controls the operation of the display panel DP, an input sensor controller ISC that controls the operation of the input sensing section ISP, and a fingerprint sensor controller FSC that controls the operation of the fingerprint sensor FSN. When operating the display device DD, the main controller MC can control the operation of the display panel controller DPC, the input sensor controller ISC, and the fingerprint sensor controller FSC.

[0079] The Display Panel Controller (DPC) can drive the Display Panel DP in both initial and main modes in response to the control of the Main Controller (MC). The DPC can be referred to as a "timing controller." When driving the Display Panel DP in initial mode, the light generated by the Display Panel DP can be supplied to the Fingerprint Sensor (FSN).

[0080] The Input Sensing Controller (ISC) can drive the Input Sensing Section (ISP) in response to control by the main controller (MC). The ISC can convert signals sensed by the ISP into input signals and provide these input signals to the main controller (MC). When a user touches the ISP, the input signal can include the user's touch position information, which may be referred to as "touch coordinates."

[0081] When the display panel DP is driven in the initial mode, the fingerprint sensing controller FSC can drive the fingerprint sensor FSN in response to the control of the main controller MC. When a fingerprint approaches the fingerprint sensor FSN, light generated by the display panel DP can be provided to the fingerprint, and light reflected from the fingerprint can be provided to the fingerprint sensor FSN. The fingerprint sensor FSN can sense the fingerprint based on the light reflected from the fingerprint. The fingerprint sensing controller FSC can provide the fingerprint information sensed by the fingerprint sensor FSN to the main controller MC.

[0082] The user's fingerprint can be stored in the memory MEM of the main controller MC. The main controller MC can compare the sensed fingerprint with the stored user fingerprint. When the sensed fingerprint matches the stored user fingerprint, the display panel controller DPC can drive the display panel DP in main mode in response to the control of the main controller MC.

[0083] In an exemplary embodiment of the present invention, the control module CM can further enhance the user authentication mode. The control module CM can determine whether the sensed fingerprint is a copied fingerprint. A copied fingerprint can be defined as a "fake fingerprint." For example, someone else's fingerprint can be copied onto tape by placing tape on the part of the finger being touched and pressing down on the tape.

[0084] The control module CM can compare the sensed fingerprint with a copied fingerprint. When the sensed fingerprint is determined to be a copied fingerprint, the control module CM can request a re-entry of the fingerprint without performing user authentication. Alternatively, the control module CM can compare the sensed fingerprint with a copied fingerprint. When the sensed fingerprint is determined to be a valid fingerprint, the control module CM can perform user authentication by comparing the sensed fingerprint with the stored user fingerprint.

[0085] For example, the fingerprint sensing controller (FSC) can provide the detected fingerprint, sensed by the fingerprint sensor (FSN), as an output signal to the main controller (MC). The output signal can be defined as the output value of the sensed fingerprint. The main controller (MC) can compare the output value of the sensed fingerprint sensed by the fingerprint sensor (FSN) with a reference value corresponding to a copied fingerprint. Based on the comparison result between the output value and the reference value, the main controller (MC) can determine whether the sensed fingerprint is a copied fingerprint or a normal fingerprint. This operation will be described in detail later.

[0086] In an exemplary embodiment of the present invention, the control module CM may operate as follows to further enhance the user authentication mode.

[0087] When a touch event occurs on the display module DM, the display module DM can be driven in an initial mode. For example, the input sensing section ISP can be touched to drive the display module DM in the initial mode, and the control module CM can drive the display panel DP in the initial mode based on the touch signal. The touch position of the display module DM can be provided to the main controller MC via the input sensing controller ISC. The main controller MC can store the touch position of the display module DM as a first touch position.

[0088] When the fingerprint touch display module DM performs fingerprint input, the input sensing section ISP can sense the touch position of the fingerprint, and the fingerprint can be sensed by the fingerprint sensor FSN. The touch position of the fingerprint can be the touch position of the fingerprint sensor FSN. The touch position of the fingerprint can be provided to the main controller MC through the input sensing controller ISC. The main controller MC can store the touch position of the fingerprint as a second touch position.

[0089] User authentication modes may include a first user authentication mode and a second user authentication mode. Compared with the first user authentication mode, the second user authentication mode is an enhanced protection mode. The main controller MC can execute either the first user authentication mode or the second user authentication mode based on whether the first touch position matches the second touch position.

[0090] When a fingerprint is detected, the main controller MC can sense movement of the display device DD. The main controller MC can then execute either a first user authentication mode or a second user authentication mode depending on whether movement of the display device DD is detected.

[0091] Figure 4 It is shown Figure 3 An exploded 3D view of the display module DM, and Figure 5 It is along Figure 4 A sectional view taken by line I-I'.

[0092] Reference Figure 4 and Figure 5 The display module (DM) may include a display panel (DP), an input sensing section (ISP), a window (WIN), a printed layer (PIT), a cover layer (CVL), and a fingerprint sensor (FSN). As a representative example, in... Figure 5 The diagram shows the display panel (DP), input sensing component (ISP), window (WIN), cover layer (CVL), and fingerprint sensor (FSN) assembled together.

[0093] The input sensing component (ISP) can be located on the display panel (DP), and the window (WIN) can be located on the input sensing component (ISP). The cover glass (CVL) and the fingerprint sensor (FSN) can be located below the display panel (DP).

[0094] The display panel DP may include a display area DA and a non-display area NDA surrounding the display area DA. The display panel DP may be, but is not limited to, a flexible display panel. For example, the display panel DP may include multiple electronic components disposed on a flexible substrate.

[0095] The input sensing section (ISP) may include multiple sensor units (not shown) to sense external inputs. The sensor units may use capacitive methods to sense external inputs. When manufacturing the display module (DM), the input sensing section (ISP) may be directly fabricated on the display panel (DP); however, it should not be limited to this or restricted by it. That is, after being manufactured separately from the display panel (DP), the input sensing section (ISP) may be attached to the display panel (DP) using adhesive.

[0096] The window (WIN) protects the display panel (DP) and the input sensing component (ISP) from external scratches and impacts. A first adhesive (ADH1) can be disposed between the window and the ISP. The window can be attached to the ISP via the first adhesive (ADH1). The first adhesive (ADH1) may include an optically transparent adhesive. The image generated by the display panel (DP) can be provided to the user after passing through the window.

[0097] The printed layer PIT can overlap with the non-display area NDA and can be disposed on the lower surface of the input sensing portion ISP of the window WIN. The printed layer PIT may not be disposed within the display area DA. The printed layer PIT can have a predetermined color, for example, black. The non-display area NDA can be printed with a predetermined color using the printed layer PIT.

[0098] The cover layer CVL can absorb external impacts applied to the lower portion of the display panel DP and can protect the display panel DP. The cover layer CVL may include a foam sheet with predetermined elasticity. A second adhesive ADH2 may be disposed between the cover layer CVL and the display panel DP. The cover layer CVL can be attached to the display panel DP via the second adhesive ADH2. The second adhesive ADH2 may include a pressure-sensitive adhesive.

[0099] The opening OP can be defined to extend through the cover glass CVL. The opening OP can be defined within the display area DA. The fingerprint sensor FSN can be disposed within the opening OP to overlap with a portion of the display area DA. The fingerprint sensor FSN may include multiple optical sensors to use light to sense the fingerprint FP. Each of the optical sensors may include a photodiode.

[0100] When a finger (FIN) touches the display module DM, the input sensing unit (ISP) can sense the touch position of the finger (FIN). As described above, the touch position can be provided to the main controller (MC). The fingerprint (FP) of the finger (FIN) can touch the display module DM adjacent to the fingerprint sensor (FSN).

[0101] The display panel DP may include a sensing area SNA disposed on the fingerprint sensor FSN and overlapping with the fingerprint sensor FSN. Light LT1 generated by the sensing area SNA can be provided to the fingerprint FP and can be reflected from the fingerprint FP as light LT2. The light LT2 reflected from the fingerprint FP can be provided to the fingerprint sensor FSN. The fingerprint sensor FSN can sense the fingerprint FP based on the light LT2 reflected from the fingerprint FP.

[0102] Figure 6 It is shown schematically. Figure 5 A cross-sectional view of the display panel DP.

[0103] Reference Figure 6 The display panel (DP) may include a substrate (SUB), a pixel layer (PXL) disposed on the substrate (SUB), and a thin-film encapsulation layer (TFE) disposed on the substrate (SUB) to cover the pixel layer (PXL). The input sensing component (ISP) may be disposed on the thin-film encapsulation layer (TFE).

[0104] The substrate SUB may include a display area DA and a non-display area NDA surrounding the display area DA. The substrate SUB may include a flexible plastic material. As an example, the substrate SUB may include polyimide (PI). The pixel layer PXL may include multiple pixels. The structure of the pixels will be described in detail later.

[0105] Figure 7 It is shown Figure 6 A floor plan of the display panel (DP).

[0106] Reference Figure 7 A display device DD according to an exemplary embodiment of the present invention may include a display panel DP, a scan driver SDV, a data driver DDV, and a transmit driver EDV. The scan driver SDV, the data driver DDV, and the transmit driver EDV may be disposed on the display panel DP.

[0107] 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. The display panel DP may include a display area DA and a non-display area NDA surrounding the display area DA.

[0108] The display panel DP may include multiple pixels PX, multiple scan lines SL1 to SLm, multiple data lines DL1 to DLn, and multiple emission lines EL1 to ELm. Each of “m” and “n” is a natural number. The pixels PX may be arranged in a matrix; however, they should not be limited to or restricted by this arrangement. The pixels PX may be arranged in the display area DA and may be connected to the scan lines SL1 to SLm, the data lines DL1 to DLn, and the emission lines EL1 to ELm.

[0109] The scan driver (SDV), data driver (DDV), and transmit driver (EDV) can be arranged in the non-display area (NDA). The scan driver (SDV) and transmit driver (EDV) can be positioned adjacent to the long sides of the display panel (DP), respectively. The data driver (DDV) can be manufactured as an integrated circuit chip and can be positioned adjacent to one of the short sides of the display panel (DP).

[0110] Scan lines SL1 to SLm can extend in the second direction DR2 and can be connected to the scan driver SDV. Data lines DL1 to DLn can extend in the first direction DR1 and can be connected to the data driver DDV. Transmit lines EL1 to ELm can extend in the second direction DR2 and can be connected to the transmit driver EDV.

[0111] The scan driver SDV can generate multiple scan signals, which can be applied to pixel PX via scan lines SL1 to SLm. The scan signals can be applied to pixel PX sequentially. The data driver DDV can generate multiple data voltages, which can be applied to pixel PX via data lines DL1 to DLn. The emitter driver EDV can generate multiple emission signals, which can be applied to pixel PX via emitter lines EL1 to ELm.

[0112] The Display Panel Controller (DPC) can control the operation of the Scan Driver (SDV), Data Driver (DDV), and Transmit Driver (EDV).

[0113] A pixel (PX) can receive data voltage in response to a scan signal. A pixel (PX) can emit light with a brightness corresponding to the data voltage in response to a light emission signal to display an image. The emission time of a pixel (PX) can be controlled by the light emission signal.

[0114] Figure 8 It is shown that... Figure 7 A cross-sectional view of the portion corresponding to pixel PX.

[0115] Reference Figure 8 A pixel PX may include a light-emitting element (OLED) and a transistor TR connected to the OLED. The OLED may include a first electrode AE, a second electrode CE, a hole control layer HCL, an electron control layer ECL, and a light-emitting layer EML. The first electrode AE ​​may be an anode electrode, and the second electrode CE may be a cathode electrode.

[0116] Transistor TR and light-emitting element OLED can be disposed on substrate SUB. Substrate SUB may include a light-emitting region PA corresponding to each pixel PX and a non-light-emitting region NPA surrounding the light-emitting region PA. Light-emitting element OLED can be disposed in light-emitting region PA, and transistor TR can be disposed in non-light-emitting region NPA. Buffer layer BFL can be disposed on substrate SUB, and buffer layer BFL may include inorganic material.

[0117] The semiconductor layer SM of the transistor TR can be disposed on the buffer layer BFL. The semiconductor layer SM can include inorganic or organic semiconductors such as amorphous silicon or polycrystalline silicon. Alternatively, the semiconductor layer SM can include oxide semiconductors. Although not explicitly stated... Figure 8 As shown, however, the semiconductor layer SM may include a source region, a drain region, and a channel region defined between the source region and the drain region.

[0118] A first insulating layer INS1 may be disposed on a buffer layer BFL to cover the semiconductor layer SM. The first insulating layer INS1 may include an inorganic material. The gate electrode GE of the transistor TR may be disposed on the first insulating layer INS1 to overlap with the semiconductor layer SM. The gate electrode GE may be disposed to overlap with the channel region of the semiconductor layer SM.

[0119] A second insulating layer INS2 may be disposed on the first insulating layer INS1 to cover the gate electrode GE. The second insulating layer INS2 may include organic and / or inorganic materials.

[0120] The source electrode SE and drain electrode DE of transistor TR can be configured to be separated from each other on the second insulating layer INS2. The source electrode SE can be connected to the source region of semiconductor layer SM through a first contact hole CH1, which defines a path through the first insulating layer INS1 and the second insulating layer INS2. The drain electrode DE can be connected to the drain region of semiconductor layer SM through a second contact hole CH2, which defines a path through the first insulating layer INS1 and the second insulating layer INS2.

[0121] A third insulating layer INS3 may be disposed on the second insulating layer INS2 to cover the source electrode SE and drain electrode DE of the transistor TR. The third insulating layer INS3 may include an organic material. A connection electrode CNE may be disposed on the third insulating layer INS3. The connection electrode CNE may be connected to the drain electrode DE through a third contact hole CH3, which defines a path through the third insulating layer INS3.

[0122] A fourth insulating layer INS4 may be disposed on the third insulating layer INS3 to cover the connecting electrode CNE. A first electrode AE ​​may be disposed on the fourth insulating layer INS4. The first electrode AE ​​may be connected to the connecting electrode CNE through a fourth contact hole CH4, which extends through the fourth insulating layer INS4.

[0123] The pixel defining layer (PDL) can be configured on the first electrode AE ​​and the fourth insulating layer INS4 to expose a predetermined portion of the first electrode AE. An opening PX_OP can be defined by the pixel defining layer (PDL) to expose the predetermined portion of the first electrode AE.

[0124] The hole control layer HCL can be disposed on the first electrode AE ​​and the pixel definition layer PDL. The hole control layer HCL can be commonly disposed 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 may also include a hole injection layer.

[0125] The emissive layer EML can be disposed on the hole control layer HCL. The emissive layer EML can be disposed in the region corresponding to the opening PX_OP. That is, the emissive layer EML can be formed in each of the pixels PX after being divided into multiple parts. The emissive layer EML may include organic and / or inorganic materials. The emissive layer EML can produce light having one of red, green, and blue colors; however, it should not be limited to or restricted by this. The emissive layer EML can produce white light by combining organic materials that produce red, green, and blue colors respectively.

[0126] The electronic control layer (ECL) can be disposed on the light-emitting layer (EML). The ECL can also be disposed on the hole control layer (HCL) to cover the EML. That is, the ECL can be commonly disposed in the light-emitting region (PA) and the non-light-emitting region (NPA). The ECL may include an electron transport layer and may also include an electron injection layer.

[0127] The second electrode CE can be disposed on the electronic control layer ECL. The second electrode CE can also be commonly disposed in the pixel PX. The thin film encapsulation layer TFE can be disposed on the second electrode CE. The layer disposed between the substrate SUB and the thin film encapsulation layer TFE can be referred to as the pixel layer PXL.

[0128] 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. The first encapsulation layer EN1 and the third encapsulation layer EN3 may include inorganic materials and can protect the pixel layer PXL from moisture / oxygen. The second encapsulation layer EN2 may include organic materials and can protect the pixel layer PXL from foreign substances such as dust particles.

[0129] A protective substrate (PSUB) may be disposed below the substrate SUB. The protective substrate (PSUB) protects the lower portion of the substrate SUB. The protective substrate (PSUB) may comprise a flexible plastic material. For example, the protective substrate (PSUB) may comprise polyethylene terephthalate (PET).

[0130] A first voltage can be applied to the first electrode AE, and a second voltage having a lower voltage level than the first voltage can be applied to the second electrode CE. Holes and electrons injected into the light-emitting layer EML can recombine to generate excitons, and the light-emitting element OLED can emit light by the excitons returning from the excited state to the ground state. The light-emitting element OLED can emit light, thereby displaying an image.

[0131] Figure 9 It is shown Figure 4 A plan view of the input sensing section (ISP).

[0132] Reference Figure 9 The input sensing section (ISP) may include multiple sensing electrodes SE1 and SE2, multiple signal lines SNL1 and SNL2, and multiple pads PD. The sensing electrodes SE1 and SE2, signal lines SNL1 and SNL2, and pads PD may be disposed on the thin-film encapsulation layer TFE.

[0133] When viewed in a plane, the input sensing section (ISP) may include an active area AA and an inactive area NAA surrounding the active area AA. Sensing electrodes SE1 and SE2 may be arranged in the active area AA, and pads PD may be arranged in the inactive area NAA. Signal lines SNL1 and SNL2 may be connected to one end of the sensing electrodes SE1 and SE2 and may extend in the inactive area NAA to connect to the pads PD. The pads PD may be connected to the input sensing controller (ISC) via a flexible printed circuit board.

[0134] Sensing electrodes SE1 and SE2 may include a plurality of first sensing electrodes SE1 extending in a first direction DR1 and arranged in a second direction DR2, and a plurality of second sensing electrodes SE2 extending in the second direction DR2 and arranged in the first direction DR1. Signal lines SNL1 and SNL2 may include a plurality of first signal lines SNL1 connected to the first sensing electrodes SE1 and a plurality of second signal lines SNL2 connected to the second sensing electrodes SE2.

[0135] The second sensing electrode SE2 may be extended to intersect with the first sensing electrode SE1 while being insulated from the first sensing electrode SE1. The first sensing electrode SE1 may be defined as an output sensing electrode, and the second sensing electrode SE2 may be defined as an input sensing electrode.

[0136] Each of the first sensing electrodes SE1 may include a plurality of first sensor portions SP1 arranged on a first direction DR1 and a plurality of first connection portions CP1 connecting the first sensor portions SP1. Each of the first connection portions CP1 may be disposed between two first sensor portions SP1 that are adjacent to each other along the first direction DR1, and may electrically connect the two first sensor portions SP1.

[0137] Each of the second sensing electrodes SE2 may include a plurality of second sensor portions SP2 arranged on the second direction DR2 and a plurality of second connection portions CP2 connecting the second sensor portions SP2. Each of the second connection portions CP2 may be disposed between two adjacent second sensor portions SP2 along the second direction DR2 and may electrically connect two second sensor portions SP2.

[0138] The first sensor portion SP1 and the second sensor portion SP2 can have a grid shape. The first sensor portion SP1 and the second sensor portion SP2 can be non-overlapping, spaced apart, and arranged alternately. A capacitor can be formed from the first sensor portion SP1 and the second sensor portion SP2. The second connecting portion CP2 can be non-overlapping with the first connecting portion CP1.

[0139] The first sensor portion SP1, the second sensor portion SP2, and the second connecting portion CP2 can be disposed on the same layer. The first connecting portion CP1 can be disposed on a different layer than the layer on which the first sensor portion SP1, the second sensor portion SP2, and the second connecting portion CP2 are disposed.

[0140] Figure 10 It is shown Figure 9 An enlarged view of the first region A1. Figure 11 Is only shown Figure 10A view of the first sensor portion SP1, the second sensor portion SP2, and the second connection portion CP2. Figure 12 Is only shown Figure 10 The view of the first connecting part CP1.

[0141] Figure 10 Two adjacent first sensor sections SP1 and two adjacent second sensor sections SP2 are shown as representative examples.

[0142] Reference Figure 10 , Figure 11 and Figure 12 Each of the first sensor portion SP1 and the second sensor portion SP2 may include a plurality of first branch portions BP1 extending in the first diagonal direction DDR1 and a plurality of second branch portions BP2 extending in the second diagonal direction DDR2, and may have a grid shape.

[0143] The first diagonal direction DDR1 can be a direction that intersects the first direction DR1 and the second direction DR2 on a plane defined by the first direction DR1 and the second direction DR2. The second diagonal direction DDR2 can be a direction that intersects the first diagonal direction DDR1 on a plane defined by the first direction DR1 and the second direction DR2. As an example, the first direction DR1 and the second direction DR2 can intersect each other perpendicularly, and the first diagonal direction DDR1 and the second diagonal direction DDR2 can intersect each other perpendicularly.

[0144] The first branch portion BP1 of each of the first sensor portion SP1 and the second sensor portion SP2 may intersect with the second branch portion BP2 and may be integrally formed with each other. The touch opening TOP having a diamond shape may be defined by the first branch portion BP1 and the second branch portion BP2.

[0145] The first connecting portion CP1 can extend without overlapping the second connecting portion CP2, and can electrically connect two adjacent first sensor portions SP1. The first connecting portion CP1 can be connected to the first sensor portion SP1 through multiple contact holes TS-CH. The first connecting portion CP1 can extend to the first sensor portion SP1 via predetermined portions of two adjacent second sensor portions SP2.

[0146] The second connecting portion CP2 can be electrically connected to the second sensor portion SP2. The second sensor portion SP2 and the second connecting portion CP2 can be integrally formed with each other. The second connecting portion CP2 can have a grid shape and can extend from the second sensor portion SP2. The second connecting portion CP2, the first sensor portion SP1, and the second sensor portion SP2 can be formed of the same material and can be patterned substantially simultaneously.

[0147] The first connecting portion CP1 may include a first extension portion EX1 and a second extension portion EX2 having a shape symmetrical with respect to the first extension portion EX1. The second connecting portion CP2 may be disposed between the first extension portion EX1 and the second extension portion EX2. The first extension portion EX1 may extend through one of the second sensor portions SP2 and may be connected to the first sensor portion SP1. The second extension portion EX2 may extend through the other of the second sensor portions SP2 and may be connected to the first sensor portion SP1.

[0148] In the following text, based on the relative arrangement positions, Figure 10 and Figure 11 The first sensor portion SP1 in the middle can be referred to as the upper first sensor portion SP1 and the lower first sensor portion SP1. Furthermore, based on their relative arrangement positions, Figure 10 and Figure 11 The second sensor portion SP2 in the middle can be referred to as the left second sensor portion SP2 and the right second sensor portion SP2.

[0149] A predetermined portion of the first extension portion EX1 and the second extension portion EX2, adjacent to one side of the first extension portion EX1 and the second extension portion EX2, can be connected to the lower first sensor portion SP1 via a contact hole TS-CH. A predetermined portion of the first extension portion EX1 and the second extension portion EX2, adjacent to the other side of the first extension portion EX1 and the second extension portion EX2, can be connected to the upper first sensor portion SP1 via a contact hole TS-CH. The contact hole TS-CH can define an insulating layer that passes through the first connection portion CP1 and serves as a reference. Figure 13 Describe the shape of the contact hole TS-CH.

[0150] The first extension portion EX1 may include a first sub-extension portion EX1_1 and a second sub-extension portion EX1_2 extending in the first diagonal direction DDR1, a third sub-extension portion EX1_3 and a fourth sub-extension portion EX1_4 extending in the second diagonal direction DDR2, a first sub-connection portion SCP1 extending in the second diagonal direction DDR2, and a second sub-connection portion SCP2 extending in the first diagonal direction DDR1.

[0151] The predetermined portions of the first sub-extension EX1_1 and the second sub-extension EX1_2, adjacent to one side of the first sub-extension EX1_1 and the second sub-extension EX1_2, can be connected to the lower first sensor portion SP1 via the contact hole TS-CH. The predetermined portions of the third sub-extension EX1_3 and the fourth sub-extension EX1_4, adjacent to one side of the third sub-extension EX1_3 and the fourth sub-extension EX1_4, can be connected to the upper first sensor portion SP1 via the contact hole TS-CH.

[0152] The other side of the first sub-extension EX1_1 can be connected to the other side of the third sub-extension EX1_3, and the other side of the second sub-extension EX1_2 can be connected to the other side of the fourth sub-extension EX1_4. The first sub-connecting portion SCP1 can extend from the other side of the fourth sub-extension EX1_4 in the second diagonal direction DDR2, and can be connected to the first sub-extension EX1_1. The second sub-connecting portion SCP2 can extend from the other side of the second sub-extension EX1_2 in the first diagonal direction DDR1, and can be connected to the third sub-extension EX1_3.

[0153] The first sub-extension EX1_1, the second sub-extension EX1_2, the third sub-extension EX1_3, the fourth sub-extension EX1_4, the first sub-connecting part SCP1, and the second sub-connecting part SCP2 can be formed integrally with each other.

[0154] The first sub-extension EX1_1 and the second sub-extension EX1_2 can extend to intersect with a predetermined number of second branch portions BP2 in the second branch portion BP2 of the right second sensor portion SP2, which are adjacent to the lower first sensor portion SP1. For example... Figure 11 As shown, the first branch BP1 of the right second sensor part SP2 may not be located in the area overlapping with the first sub-extension part EX1_1, the second sub-extension part EX1_2, and the second sub-connection part SCP2.

[0155] The third sub-extension EX1_3 and the fourth sub-extension EX1_4 can extend to intersect with a predetermined number of first branch portions BP1 in the first branch portion BP1 of the right second sensor portion SP2, which are adjacent to the upper first sensor portion SP1. For example... Figure 11 As shown, the second branch BP2 of the right second sensor part SP2 may not be located in the area overlapping with the third sub-extension part EX1_3, the fourth sub-extension part EX1_4, and the first sub-connection part SCP1.

[0156] The second extension EX2 may include a fifth sub-extension EX2_1 and a sixth sub-extension EX2_2 extending in the second diagonal direction DDR2, a seventh sub-extension EX2_3 and an eighth sub-extension EX2_4 extending in the first diagonal direction DDR1, a third sub-connection SCP3 extending in the first diagonal direction DDR1, and a fourth sub-connection SCP4 extending in the second diagonal direction DDR2.

[0157] The left second sensor portion SP2 can have a structure symmetrical with respect to the right second sensor portion SP2, and the second extension portion EX2 can have a structure symmetrical with respect to the first extension portion EX1. Therefore, the fifth sub-extension portion EX2_1, the sixth sub-extension portion EX2_2, the seventh sub-extension portion EX2_3, and the eighth sub-extension portion EX2_4 can be connected to the first sensor portion SP1 via the left second sensor portion SP2. Furthermore, predetermined portions of the fifth sub-extension portion EX2_1, the sixth sub-extension portion EX2_2, the seventh sub-extension portion EX2_3, and the eighth sub-extension portion EX2_4 can be connected to the first sensor portion SP1 via the contact hole TS-CH.

[0158] The fifth sub-extension EX2_1, the sixth sub-extension EX2_2, the seventh sub-extension EX2_3, and the eighth sub-extension EX2_4 may intersect with some of the first branch portions BP1 and the second branch portions BP2 of the left second sensor portion SP2. Additionally, the first branch portions BP1 and the second branch portions BP2 of the left second sensor portion SP2 may not be located in areas overlapping with the fifth sub-extension EX2_1, the sixth sub-extension EX2_2, the seventh sub-extension EX2_3, and the eighth sub-extension EX2_4, as well as the third sub-connecting portion SCP3 and the fourth sub-connecting portion SCP4.

[0159] Figure 13 It is along Figure 10 The sectional view shown is taken from line II-II'.

[0160] Reference Figure 13 The inorganic insulating layer IOL can be disposed on the thin-film encapsulation layer TFE, and the first connecting portion CP1 can be disposed on the inorganic insulating layer IOL. The first insulating layer TS-IL1 can be disposed on the thin-film encapsulation layer TFE to cover the first connecting portion CP1. The first insulating layer TS-IL1 may include inorganic materials.

[0161] A first sensor portion SP1 and a second sensor portion SP2 may be disposed on a first insulating layer TS-IL1. A second connecting portion CP2, integrally formed with the second sensor portion SP2, may be disposed on the first insulating layer TS-IL1. The first connecting portion CP1 may be connected to the first sensor portion SP1 through a contact hole TS-CH, the contact hole TS-CH being defined to extend through the first insulating layer TS-IL1. A second insulating layer TS-IL2 may be disposed on the first insulating layer TS-IL1 to cover the first sensor portion SP1 and the second sensor portion SP2. The second insulating layer TS-IL2 may include an organic material.

[0162] Figure 14 It is shown Figure 9 An enlarged view of the second region A2.

[0163] Figure 14 The light-emitting areas PA1, PA2, and PA3 are shown alongside the first sensor portion SP1 and the second sensor portion SP2.

[0164] Reference Figure 14 , Figure 8 The light-emitting region PA shown can be one of light-emitting regions PA1, PA2, and PA3. Light-emitting regions PA1, PA2, and PA3 can be arranged on the first diagonal direction DDR1 and the second diagonal direction DDR2. The first branch portion BP1 and the second branch portion BP2 of the first sensor portion SP1 and the second sensor portion SP2 can overlap with the non-light-emitting region NPA between the light-emitting regions PA1, PA2, and PA3.

[0165] The light-emitting areas PA1, PA2, and PA3 may include multiple first light-emitting areas PA1 displaying red, multiple second light-emitting areas PA2 displaying green, and multiple third light-emitting areas PA3 displaying blue. The third light-emitting areas PA3 may be larger than the first light-emitting areas PA1, and the first light-emitting areas PA1 may be larger than the second light-emitting areas PA2.

[0166] The light-emitting areas PA1, PA2 and PA3 can have a rhomboid shape. Figure 8 The light-emitting area PA shown can be one of the light-emitting areas PA1, PA2, and PA3. The touch opening TOP can have a rhomboid shape corresponding to the shape of the light-emitting areas PA1, PA2, and PA3, and can have a size corresponding to the size of the light-emitting areas PA1, PA2, and PA3.

[0167] Because the first sensor part SP1 and the second sensor part SP2 are located in the non-light-emitting area NPA, the light generated by the light-emitting areas PA1, PA2 and PA3 can be emitted normally without being affected by the first sensor part SP1 and the second sensor part SP2.

[0168] Figure 15 This is a flowchart illustrating a method for driving a display device according to an exemplary embodiment of the concept of the present invention. Figure 16 This is a view showing the initial mode of the display module. Figure 17 It is shown Figure 16 A view of the driving status of the sensing area on the display panel.

[0169] Reference Figure 15 and Figure 16 The display panel DP can be driven in the initial mode (S110). The display module DM can be driven in the initial mode by touching it. For example, when the user touches the display module DM in the off state, the display module DM can be turned on in response to the touch event from the user.

[0170] The display panel DP of the activated display module DM can display the initial image ITM as the image corresponding to the initial mode, in which fingerprint input may be required. For example, the display panel DP can display a command message such as "Please enter your fingerprint" in the initial mode and can activate the sensing area SNA.

[0171] Reference Figure 16 and Figure 17 The sensing area SNA can be confined within the display area DA, and the fingerprint sensor FSN can be positioned below the sensing area SNA. As an example, in... Figure 17 The fingerprint sensor FSN is shown in the middle by a dashed line.

[0172] When the display panel DP is driven in the initial mode, the control module CM can drive the sensing area SNA into a first color pattern W and a second color pattern B, each having a different color from the other. In an exemplary embodiment of the present invention, the transmittance of the first color pattern W may be higher than that of the second color pattern B. For example, the first color pattern W may be white, and the second color pattern B may be black; however, the colors are not limited to or restricted by this. That is, the first color pattern W may have a color different from white, and the second color pattern B may have a color different from black.

[0173] A first color pattern W may be disposed around a second color pattern B. The second color pattern B may include a plurality of black areas extending in a first direction DR1 and arranged in a second direction DR2. Each of the black areas may have a rectangular shape. The first color pattern W may be disposed around each of the black areas.

[0174] Reference Figure 15Fingerprints can be entered (S120). For example, a finger can touch the display module DM to enter a fingerprint. The fingerprint sensor FSN can receive the light reflected from the fingerprint to sense the fingerprint (S130).

[0175] The control module CM can compare the sensed fingerprint with the copied fingerprint (S140). For example, it can compare the output value of the sensed fingerprint with a reference value defined by the value output from the fingerprint sensor FSN when a copied (fake) fingerprint is sensed. This operation will be described in detail below.

[0176] In operation S150, it is determined whether the sensed fingerprint is a normal fingerprint. If it is determined in operation S150 that the sensed fingerprint is a normal fingerprint, the driving method continues to operation S160, and the user authentication mode can be executed by the control module CM. A normal fingerprint can be a fingerprint from a real finger. If it is determined in operation S150 that the sensed fingerprint is a copied fingerprint, the driving method continues to operation S120, and a new fingerprint may be required. Therefore, unauthenticated access, such as through copied fingerprints, can be prevented.

[0177] When user authentication mode is executed in operation S160, the control module CM can compare the sensed fingerprint with the stored user fingerprint. The stored user fingerprint can be the fingerprint of the owner of the display device DD.

[0178] If, in operation S170, the sensed fingerprint is authenticated as the user's fingerprint because it matches the stored user's fingerprint, the driving method continues to operation S180, and the display panel DP can be driven in the main mode. If, in operation S170, the sensed fingerprint is not authenticated as the user's fingerprint because it does not match the stored user's fingerprint, the driving method continues to operation S120, and it may be necessary to re-enter the fingerprint.

[0179] The driving method of the display device DD according to an exemplary embodiment of the present invention performs a user authentication mode after determining whether the fingerprint is a copied fingerprint, and thus enhances the authentication security of the display device DD. The operation of determining whether the fingerprint is a copied fingerprint will be described in more detail below.

[0180] Figure 18 It is a view showing the path of light delivered to the user's skin.

[0181] Reference Figure 18The skin SKN may include the stratum corneum (epidermal stratum corneum) S-COR, the epidermal layer EPM beneath the stratum corneum S-COR, and the dermal layer DER beneath the epidermal layer EPM. A first reflected external light OL1_1, corresponding to a portion of the first external light OL1 provided to the skin SKN, may be reflected from the surface of the skin SKN. A second external light OL2, corresponding to a portion of the first external light OL1, may travel to the epidermal layer EPM within the skin SKN after passing through the surface of the skin SKN.

[0182] The second external light OL2, traveling to the epidermal EPM, can be scattered by the epidermal EPM. The third external light OL3, corresponding to a portion of the second external light OL2, can travel to the dermal layer (DER) within the skin SKN after passing through the epidermal EPM. The second absorptive external light OL2_1, corresponding to a portion of the second external light OL2, can be absorbed by the epidermal EPM. The second reflected external light OL2_2, corresponding to a portion of the second external light OL2, can be reflected from the epidermal EPM and then transmitted again through the surface of the skin SKN before traveling to the outside of the skin SKN. The point where the first external light OL1 enters the skin SKN and the point where the second reflected external light OL2_2 leaves the skin SKN can be different from each other.

[0183] The third external light OL3 traveling to the dermal layer DER can be scattered by the dermal layer DER. The third absorptive external light OL3_1, corresponding to a portion of the third external light OL3, can be absorbed by the dermal layer DER. The third reflected external light OL3_2, corresponding to a portion of the third external light OL3, can be reflected from the dermal layer DER, can transmit through the surface of the skin SKN, and can subsequently travel to the outside of the skin SKN. The point where the first external light OL1 enters the skin SKN and the point where the third reflected external light OL3_2 leaves the skin SKN to the outside can be different from each other.

[0184] Therefore, some of the second external light OL2 and the third external light OL3 of the first external light OL1 can be reflected on the epidermal EPM and dermal DER, and can leave the skin SKN to the outside through a point different from the entry point of the first external light OL1.

[0185] This phenomenon can be defined as an optical waveguide phenomenon through the skin SKN. In an exemplary embodiment of the present invention, the driving method of the display device DD can determine the replicated fingerprint by using the optical waveguide phenomenon through the skin SKN.

[0186] Figure 19 It is shown in Figure 17 A view of the path of light generated in the sensing area SNA and the output from the fingerprint sensor FSN. Figure 20 This is a flowchart illustrating a method for comparing a sensed fingerprint with a copied fingerprint. Figure 21 It is shown Figure 15 The flowchart shows a method for determining whether a sensed fingerprint is a normal fingerprint.

[0187] As a representative example Figure 19 The cross-sections of the sensing area SNA, finger FIN, and fingerprint sensor FSN are shown when viewed in the first direction DR1.

[0188] Reference Figure 19 Light L1, L2, L3, and L4 generated in the color pattern of the sensing area SNA below the finger FIN can travel to the finger FIN and can be reflected by the finger FIN. The first color pattern W may include a first sub-pattern W1 and a second sub-pattern W2. The second sub-pattern W2 may be disposed between second color patterns B. The second color patterns B may be disposed between the first sub-pattern W1 and the second sub-pattern W2. Each of the first sub-patterns W1 has a width greater than the width of the second sub-pattern W2 in the second direction DR2.

[0189] The display panel DP can generate a first light L1, a second light L2, a third light L3, and a fourth light L4. Hereinafter, the first light L1, the third light L3, and the fourth light L4 are shown as light that is scattered and reflected after traveling through the skin of the fingertip and emitted from the skin. Additionally, the second light L2 is shown as light reflected from the surface of the skin of the fingertip. However, this is merely exemplary, and the first light L1, the second light L2, the third light L3, and the fourth light L4 may include light reflected from the surface of the skin and light scattered and reflected from within the skin.

[0190] The first light L1 generated by the first sub-pattern W1 can travel into the skin of the finger fin, be scattered and reflected within the skin, and then travel back to the first sub-pattern W1. The second light L2 generated by the first sub-pattern W1 can be reflected from the skin surface of the finger fin and can also travel back to the first sub-pattern W1. Therefore, the first light L1 and the second light L2 can be provided to the fingerprint sensor FSN after passing through the first sub-pattern W1.

[0191] The third light L3 generated by the first sub-pattern W1 can travel into the skin of the fingertip, be scattered and reflected within the skin, and be provided to the second color pattern B. The third light L3 may not be provided to the first color pattern W again. Because the third light L3 is provided to the second color pattern B, the brightness of the second color pattern B can be increased even if the second color pattern B is black. Light is generated in the first sub-pattern W1 and the second sub-pattern W2, but the implementation is not limited to this. Light can be generated from the second color pattern B, and light can be generated from other color patterns when using other color patterns.

[0192] The fourth light L4 generated by the second sub-pattern W2 can travel into the skin of the finger FIN, be scattered and reflected within the skin, and be provided to the second color pattern B. The fourth light L4 may not be provided to the first color pattern W again. Because the fourth light L4 is provided to the second color pattern B, the brightness of the second color pattern B can be increased even if the second color pattern B has a black color.

[0193] The first sub-pattern W1, which has a relatively large size, can again receive light reflected from the finger's finger, such as the first light L1 and the second light L2. However, the second sub-pattern W2, which has a relatively small size, can no longer receive light reflected from the finger's finger, such as the fourth light L4. Therefore, the brightness of the second sub-pattern W2 can be reduced to a certain extent.

[0194] Additionally, the portion of the first sub-pattern W1 adjacent to the second color pattern B may not receive light reflected from the finger's fingerprint (FIN), such as the third light L3. The brightness of this portion of the first sub-pattern W1 adjacent to the second color pattern B can be reduced to a certain extent. However, the brightness of the second sub-pattern W2 and the brightness of the portion of the first sub-pattern W1 adjacent to the second color pattern B can be higher than the brightness of the second color pattern B, which displays black. The brightness of the light can affect the output value of the fingerprint sensor FSN.

[0195] The fingerprint sensor FSN may include a first portion PT1 overlapping with a second color pattern B and a second portion PT2 overlapping with a portion of a first color pattern W adjacent to the second color pattern B. The second portion PT2 of the fingerprint sensor FSN may overlap with portions of a second sub-pattern W2 and a first sub-pattern W1 adjacent to the second color pattern B. The remaining portion of the fingerprint sensor FSN, excluding the first portion PT1 and the second portion PT2, may be defined as a third portion PT3. Although not shown, light from a third light L3 and a fourth light L4 may be reflected on the second portion PT2.

[0196] The light supplied to the third portion PT3 of the fingerprint sensor FSN can have maximum brightness. The light supplied to the first portion PT1 can have minimum brightness. The light supplied to the second portion PT2 can have a brightness between the brightness of the light supplied to the first portion PT1 and the brightness of the light supplied to the third portion PT3.

[0197] When no light is supplied to the second color pattern B, the output value of the first portion PT1 of the fingerprint sensor FSN can be the first reference value REF1. However, light entering and reflecting from the skin (such as the third light L3 and the fourth light L4) can be supplied to the second color pattern B, and therefore, the brightness of the second color pattern B can be increased. Because some light is supplied to the first portion PT1 due to the increased brightness of the second color pattern B, the output value of the first portion PT1 can have a first output value OUT1 that is higher than the first reference value REF1.

[0198] When the third light L3 and the fourth light L4 generated in the portion of the first color pattern W that overlaps with the second portion PT2 are again provided to the first color pattern W that overlaps with the second portion PT2 but not to the second color pattern B, the output value of the second portion PT2 of the fingerprint sensor FSN can be the second reference value REF2.

[0199] However, after penetrating the skin, the third light L3 and the fourth light L4 can be provided to the second color pattern B instead of the first color pattern W that overlaps with the second portion PT2, and therefore, some light from the first color pattern W may be lost. Consequently, the brightness of the light provided to the second portion PT2 may be reduced, and the output value of the second portion PT2 of the fingerprint sensor FSN may have a second output value OUT2 that is lower than the second reference value REF2.

[0200] Because the first beam L1 and the second beam L2 are provided to the third part PT3, the output value of the third part PT3 can have the second reference value REF2.

[0201] The first reference value REF1 and the second reference value REF2 can be defined as the values ​​output from the fingerprint sensor FSN when the fingerprint sensor FSN senses a copied (fake) fingerprint. In a copied fingerprint, no light travels into the skin of the finger FIN (there is no light waveguide in the skin). Therefore, light that is not present in the first color pattern W and is lost and provided to the second color pattern B (such as the third light L3 and the fourth light L4) can be included. Therefore, the output value in the fingerprint sensor FSN obtained by sensing a copied fingerprint can have the first reference value REF1 and the second reference value REF2.

[0202] The first reference value REF1 can be defined as the sensed value of the replicated fingerprint corresponding to the first part PT1. The second reference value REF2 can be defined as the sensed value of the replicated fingerprint corresponding to the second part PT2.

[0203] Reference Figure 19 and Figure 20The system can provide a first output value OUT1 and a second output value OUT2 from the fingerprint sensor FSN (S141). For example, it can provide a first output value OUT1 from each output in the first part PT1 and a second output value OUT2 from each output in the second part PT2. The first output value OUT1 and the second output value OUT2 can be provided to the main controller MC of the control module CM.

[0204] The first reference value REF1 and the second reference value REF2 can be stored in the main controller MC. The first output value OUT1 and the second output value OUT2 can be compared with the first reference value REF1 and the second reference value REF2 through the main controller MC (S142).

[0205] Reference Figure 19 and Figure 21 Based on the comparison between the output value of the sensed fingerprint and the reference value corresponding to the copied fingerprint, the sensed fingerprint can be determined as a normal fingerprint or a copied fingerprint (S150). For example, when the first output value OUT1 is greater than the first reference value REF1 (S151), the driving method continues to operation S152. When the second output value OUT2 is less than the second reference value REF2 (S152), the sensed fingerprint can be determined as a normal fingerprint, and the driving method continues to operation S160 to execute the user authentication mode.

[0206] When the first output value OUT1 is not greater than the first reference value REF1 (S151), the sensed fingerprint can be identified as a copied fingerprint, and the driving method continues to operation S120 to request the fingerprint to be re-entered.

[0207] In this exemplary embodiment, a comparison operation between the first output value OUT1 and the first reference value REF1 and a comparison operation between the second output value OUT2 and the second reference value REF2 are performed together. However, the exemplary embodiments of the present invention should not be limited thereto or thereby restricted.

[0208] The comparison between the second output value OUT2 and the second reference value REF2 can be omitted, and the determination of whether the sensed fingerprint is a copied fingerprint can be made solely by comparing the first output value OUT1 and the first reference value REF1. For example, when the first output value OUT1 is greater than the first reference value REF1, the sensed fingerprint can be identified as a normal fingerprint, and user authentication mode can be executed. When the first output value OUT1 is not greater than the first reference value REF1, the sensed fingerprint can be identified as a copied fingerprint, and re-entry of the fingerprint may be required.

[0209] Alternatively, the comparison between the first output value OUT1 and the first reference value REF1 can be omitted, and the determination of whether the sensed fingerprint is a copied fingerprint can be made solely by comparing the second output value OUT2 and the second reference value REF2. For example, when the second output value OUT2 is less than the second reference value REF2, the sensed fingerprint can be identified as a normal fingerprint, and user authentication mode can be executed. When the second output value OUT2 is not less than the second reference value REF2, the sensed fingerprint can be identified as a copied fingerprint, and re-entry of the fingerprint may be required.

[0210] According to an exemplary embodiment of the present invention, when a fingerprint is input to the display device DD, it can first be determined whether the sensed fingerprint is a copied fingerprint, and then a user authentication mode can be executed. Therefore, the authentication security of the display device DD can be enhanced.

[0211] Figures 22A to 22F This is a view illustrating a first color pattern and a second color pattern according to various exemplary embodiments conceived in accordance with the present invention.

[0212] Reference Figure 22A The first color pattern W can be set to surround the second color pattern B.

[0213] Reference Figure 22B The first color pattern W and the second color pattern B can be arranged alternately on the first direction DR1 and the second direction DR2. For example, the sensing area SNA can be driven to display a checkered pattern. As a representative example, two first color patterns W and two color patterns B are arranged on the first direction DR1 and the second direction DR2; however, the number of first color patterns W and second color patterns B can be greater than two.

[0214] Reference Figure 22C and Figure 22D The first color pattern W and the second color pattern B can extend in one direction. For example, the first color pattern W and the second color pattern B can have a striped shape.

[0215] Reference Figure 22C The first color pattern W may include a plurality of white areas extending in the first direction DR1 and arranged in the second direction DR2. The second color pattern B may include a plurality of black areas extending in the first direction DR1, arranged in the second direction DR2, and disposed between the white areas.

[0216] Reference Figure 22DThe first color pattern W may include a plurality of white areas extending in the second direction DR2 and arranged in the first direction DR1. The second color pattern B may include a plurality of black areas extending in the second direction DR2, arranged in the first direction DR1, and disposed between the white areas.

[0217] Reference Figure 22E The second color pattern B can have a planar graphic shape. For example, the second color pattern B can have a star shape.

[0218] Reference Figure 22F The second color pattern B can have the shape of a letter. For example, the second color pattern B can have the shape of the letter "W".

[0219] Figures 22A to 22F Various shapes of the first color pattern W and the second color pattern B are shown; however, the shapes of the first color pattern W and the second color pattern B should not be limited thereto or restricted by them.

[0220] Figure 23 This is a flowchart illustrating a method for driving a display device according to an exemplary embodiment of the concept of the present invention. Figure 24 This is a view showing a method for matching sensed fingerprints with stored user fingerprints.

[0221] The display module (DM) can establish a first touch position and a second touch position. Users can authenticate themselves and begin operating the display module (DM) in main mode using these two touch positions. The first and second touch positions can be initially set by the device manufacturer or distributor and can be reset by the user later. Multiple fingerprint sensor areas can be used to set as the first and second touch positions. Alternatively, a single touch position can be established as both the first and second touch positions.

[0222] Reference Figure 23The display module DM can be touched to drive it in the initial mode (S210). When the display module DM is touched in the initial mode during operation S210, the touch position of the display module DM can be stored in the main controller MC as a first touch position. The first touch can be used to establish the first touch position and can also be used to turn on the device. After setting the first touch position, a portion of the fingerprint sensor FSN in the fingerprint touch display module DM can be stored in the main controller MC as a second touch position, and the fingerprint can be sensed (S220). The touch position of the fingerprint can be approximately one or more sensing areas SNA of the fingerprint sensor FSN in the display module DM. The touch position of the display module DM and the touch position of the fingerprint can be sensed by the input sensing part ISP.

[0223] The main controller MC can compare the first touch position with the second touch position (S230). When the first touch position and the second touch position are the same (S240), the driving method continues to operation S250, and the first user authentication mode can be executed. When the first touch position and the second touch position are different (S240), the driving method continues to operation S260, and the second user authentication mode can be executed.

[0224] In some cases, the owner of the display device DD may want to perform the power-on operation and user authentication operation of the display device DD simultaneously. Therefore, the owner can perform a touch operation to power on the display device DD and a touch operation for fingerprint authentication simultaneously. For example, the owner can touch the sensing area SNA with their finger and then maintain the touch state for a predetermined or preset time period. When the finger touches the sensing area SNA, the display device DD is powered on, and while the touch state of the sensing area SNA remains unchanged for the predetermined or preset time period, a fingerprint can be sensed, and fingerprint authentication can be performed continuously as the next operation.

[0225] This is feasible because the owner can determine the location of the sensing area SNA, where the fingerprint sensor FSN is located, by repeatedly using the display device DD. Therefore, when the user is a normal user (such as a user who reuses the device), the first touch location and the second touch location can be the same.

[0226] However, since another user who is not the owner of the display device DD does not know the location of the fingerprint sensor FSN, the other user can touch various different locations on the display device DD to turn it on. When the fingerprint input location is displayed after the display device DD is turned on, the other user can enter their fingerprint. That is, when the other user is not the owner, the first touch location and the second touch location can be different from each other.

[0227] The first user authentication mode can be the user authentication mode described in operation S160. The second user authentication mode may require enhanced or additional security compared to the first user authentication mode.

[0228] Reference Figure 24 The sensed fingerprint IPT can be compared with the stored user fingerprint STR. For example, a first feature point FP1 of the sensed fingerprint IPT and a second feature point FP2 of the user's fingerprint STR can be selected. The first feature point FP1 and the second feature point FP2 can be selected at the broken part of the fingerprint line, the intersection of the fingerprint lines, and the part of the fingerprint line that forms a closed curve.

[0229] The first feature point FP1 and the second feature point FP2 can be compared with each other to compare the sensed fingerprint IPT with the user's fingerprint STR. User authentication can be performed based on the matching degree of the first feature point FP1 and the second feature point FP2. The matching degree of the first feature point FP1 and the second feature point FP2 can be limited to fingerprint matching degree.

[0230] Reference Figure 23 When the first touch position and the second touch position are the same, the user of the touch display device DD can be identified as the owner of the display device DD, and thus a first user authentication mode can be executed. When the first touch position and the second touch position are different from each other, the user of the touch display device DD can be identified as not the owner of the display device DD, and thus a second user authentication mode with enhanced security can be executed.

[0231] When the first user authentication mode is executed, the first feature point FP1 can be compared with the second feature point FP2. In operation S270, it can be determined whether the fingerprint matching degree is greater than the first matching degree. As an example, the first matching degree can be set to approximately 70%. In this case, when it is determined in operation S270 that the matching degree between the first feature point FP1 and the second feature point FP2 is greater than approximately 70%, the sensed fingerprint can be authenticated as a user, the driving method continues to S290, and the display module DM can be driven in the main mode.

[0232] When it is determined in operation S270 that the matching degree between the first feature point FP1 and the second feature point FP2 is equal to or less than about 70%, the sensed fingerprint may not be authenticated as a user, the driving method continues to S220, and it may be necessary to re-enter the fingerprint.

[0233] When executing the second user authentication mode, the first feature point FP1 can be compared with the second feature point FP2. In operation S280, it can be determined whether the fingerprint matching degree is greater than the second matching degree. The second matching degree can have a value greater than the first matching degree. As an example, the second matching degree can be set to approximately 90%. In this case, when it is determined in operation S280 that the matching degree between the first feature point FP1 and the second feature point FP2 is greater than approximately 90%, the sensed fingerprint can be authenticated as a user, the driving method continues to S290, and the display module DM can be driven in the main mode.

[0234] When it is determined in operation S280 that the matching degree between the first feature point FP1 and the second feature point FP2 is equal to or less than about 90%, the sensed fingerprint may not be authenticated as a user, the driving method continues to S220, and it may be necessary to re-enter the fingerprint.

[0235] According to an exemplary embodiment of the present invention, since the first user authentication mode or the second user authentication mode is executed based on the comparison result of the first touch position and the second touch position, the authentication security of the display device DD can be enhanced.

[0236] Figure 25 This is a flowchart illustrating a method for driving a display device according to an exemplary embodiment of the concept of the present invention.

[0237] Reference Figure 25 In operation S310, the display module DM can be driven in the initial mode. In operation S320, a fingerprint can be sensed. When a fingerprint is sensed, movement of the display module DM can be sensed in operation S330.

[0238] Typically, a user can operate the display device DD (e.g., a mobile phone) while holding it in their hand. When a user's fingerprint is entered, the display module DM may be shaken, and the movement of the display module DM can be sensed in conjunction with the fingerprint input. For this operation, the display module DM may include a motion sensor.

[0239] To combine fingerprint input with movement detection, a predetermined or preset time period can be set to establish a threshold for this combination. For example, if the device is moved and a fingerprint is entered within a time period below or equal to the threshold, sufficient movement can be determined to match an authenticated user and trigger the first authentication mode.

[0240] However, when inputting a copied fingerprint, the display device DD can be placed on top of a workbench to input a copied (fake) fingerprint, either copied onto tape or using some other manufacturing method, and the tape with the copied fingerprint can be brought into contact with the display module DM. In this case, combined with fingerprint input, movement of the display module DM cannot be sensed.

[0241] If movement of the display device DD and fingerprint input occur within a time period exceeding a threshold, insufficient movement can be identified, and a potential unauthenticated user may trigger a second authentication mode. When considering the threshold time, the display device DD can be configured to use either device movement or fingerprint sensing as the initial input, and the other as the second input.

[0242] When movement is sensed in operation S330, the driving method may proceed to operation S340 and execute the first user authentication mode. However, when no movement is sensed in operation S330, the driving method may proceed to operation S350 and execute the second user authentication mode. The operations in S340 to S380 are substantially the same as those in S250 to S290, and therefore, their description is omitted.

[0243] According to an exemplary embodiment of the present invention, when a fingerprint is sensed, a first user authentication mode or a second user authentication mode is executed depending on whether movement of the display module DM is sensed, and thus, the authentication security of the display device DD can be enhanced.

[0244] Although exemplary embodiments of the invention have been described, it should be understood that the invention is not to be limited to these exemplary embodiments, but rather various changes and modifications can be made by those skilled in the art within the spirit and scope of the invention as claimed in the appended claims. Therefore, the disclosed subject matter should not be limited to any single embodiment described herein, and the scope of the inventive concept should be determined according to the appended claims.

Claims

1. A method for driving a display device, including: In the initial mode, the display panel is driven, the display panel including a sensing area defined above the fingerprint sensor; The sensing area is driven by a first color pattern and a second color pattern, wherein the first color pattern has a first color and the second color pattern has a second color that is different from the first color of the first color pattern; When a fingerprint is near the sensing area, the fingerprint is sensed by the fingerprint sensor, and the fingerprint sensor receives the light reflected by the fingerprint; Determine whether the sensed fingerprint is a copied fingerprint; as well as When the sensed fingerprint is a normal fingerprint, execute the user authentication mode. The first color pattern has a higher light transmittance than the second color pattern. Determining whether the sensed fingerprint is a copied fingerprint includes: The output value of the sensed fingerprint detected by the fingerprint sensor is compared with a reference value defined by the value output from the fingerprint sensor when the copied fingerprint is sensed; and Based on the comparison result between the output value and the reference value, the sensed fingerprint is determined to be either the normal fingerprint or the copied fingerprint; The output value includes: a first output value, output from a first portion of the fingerprint sensor that overlaps with the second color pattern; the reference value includes: a first reference value, defined by a sensing value of the copied fingerprint corresponding to the first portion; and / or The output value further includes: a second output value, output from a second portion of the fingerprint sensor that overlaps with the first color pattern adjacent to the second color pattern, and the reference value further includes: a second reference value, defined by a sensing value of the copied fingerprint corresponding to the second portion.

2. The method according to claim 1, wherein, The first color pattern has white color, and the second color pattern has black color.

3. The method according to claim 2, wherein, The second color pattern includes: Multiple black areas extend in a first direction and are arranged in a second direction that intersects the first direction, and the first color pattern is disposed around each of the multiple black areas.

4. The method according to claim 1, wherein, The first color pattern has colors other than white, and the second color pattern has black.

5. The method according to claim 1, wherein, Determining the sensed fingerprint as either the normal fingerprint or the copied fingerprint includes: When the first output value is greater than the first reference value and the second output value is less than the second reference value, the sensed fingerprint is determined to be the normal fingerprint.

6. The method according to claim 5, wherein, Determining the sensed fingerprint as either the normal fingerprint or the copied fingerprint includes: When the first output value is equal to or less than the first reference value, or when the second output value is equal to or greater than the second reference value, the sensed fingerprint is determined to be the copied fingerprint.

7. The method according to claim 1, wherein, Determining the sensed fingerprint as either the normal fingerprint or the copied fingerprint includes: When the first output value is greater than the first reference value, the sensed fingerprint is determined to be the normal fingerprint.

8. The method according to claim 1, wherein, Determining the sensed fingerprint as either the normal fingerprint or the copied fingerprint includes: When the second output value is less than the second reference value, the sensed fingerprint is determined to be the normal fingerprint.

9. The method according to claim 1, wherein, Executing the user authentication mode includes: The sensed fingerprint is compared with the stored user fingerprint; and When the sensed fingerprint matches the user's fingerprint, the display panel is driven in the main mode.

10. A display device, including: The display panel includes a sensing area and drives the display panel in an initial mode and a main mode; A fingerprint sensor is disposed below the sensing area and configured to sense a fingerprint adjacent to the sensing area when the display panel is driven in the initial mode; as well as The control module controls the operation of the display panel and the fingerprint sensor; The fingerprint sensor is configured to receive light provided to and reflected by the fingerprint in the sensing area and to sense the fingerprint. The control module is configured to drive the sensing area with a first color pattern and a second color pattern when the display panel is driven in the initial mode. The first color pattern has a first color, the second color pattern has a second color that is different from the first color of the first color pattern, and the first color pattern has a higher light transmittance than the second color pattern. The control module compares the output value of the sensed fingerprint detected by the fingerprint sensor with a reference value defined by the value output from the fingerprint sensor when a copied fingerprint is sensed, and determines the sensed fingerprint as a normal fingerprint or the copied fingerprint based on the comparison result between the output value and the reference value. The output value includes: a first output value, output from a first portion of the fingerprint sensor that overlaps with the second color pattern; the reference value includes: a first reference value, defined by a sensing value of the copied fingerprint corresponding to the first portion; and / or The output value further includes: a second output value, output from a second portion of the fingerprint sensor that overlaps with the first color pattern adjacent to the second color pattern, and the reference value further includes: a second reference value, defined by a sensing value of the copied fingerprint corresponding to the second portion.

11. A method for driving a display device, including: When the display module is touched to drive the display module in the initial mode, the touch position on the display module is stored as the first touch position; When a fingerprint touches a portion of the display module equipped with a fingerprint sensor, the touch position of the fingerprint is stored as a second touch position, and the fingerprint is sensed. When the first touch position and the second touch position are the same as each other, the first user authentication mode is executed; When the first touch position and the second touch position are different from each other, a second user authentication mode with enhanced security mode compared to the first user authentication mode is executed. When the fingerprint is detected, the movement of the display module is sensed; When the movement of the display module is sensed, the first user authentication mode is executed; as well as When no movement of the display module is detected, the second user authentication mode is executed.

12. The method according to claim 11, in, Executing the first user authentication mode includes: When the match between the sensed fingerprint and the stored user fingerprint is greater than a first match, the display module is activated in the main mode. The execution of the second user authentication mode includes: When the matching degree between the sensed fingerprint and the stored user's fingerprint is greater than a second matching degree, the display module is driven in the main mode, and The second matching degree is greater than the first matching degree.

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