Display device

Abstract

An embodiment discloses a display device including: a backlight unit; a display panel disposed on the backlight unit and including a first display area and a second display area; and a first sensor and a second sensor disposed below the display panel, in which the backlight unit includes: a light guide plate including a first light guide portion disposed below the first display area and a second light guide portion disposed below the second display area; a light source configured to radiate light to the light guide plate; and a first reflector disposed on the second light guide portion, and the first reflector transmits light emitted from the first sensor and reflects light emitted from the second sensor.

Description

Technical Field

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

[0002] With the development of the information society, the demand for display devices for displaying images has increased in various forms. In recent years, various display devices such as liquid crystal display devices (LCDs), plasma display panels (PDPs), and organic light emitting display devices (OLEDs) have been utilized.

[0003] Recently, the multimedia functions of electronic devices such as mobile terminals have been continuously improved. For example, a camera is embedded in a mobile terminal as a basic feature, and the resolution of the camera has increased to the level of a conventional digital camera. However, the front camera of the mobile terminal limits the screen design, making it difficult to design the screen. To reduce the space occupied by the camera, the mobile terminal has adopted a screen design including a notch or a punch hole, but due to the presence of the camera, the screen size is still limited, making it difficult to achieve a full-screen display.

[0004] To achieve a full-screen display, a method has been proposed in which an imaging area with low-resolution pixels is provided in the screen of a display panel, and a camera and / or various sensors are provided in the imaging area. Summary of the Invention

[0005] The embodiment aims to provide a display device in which the imaging area is not visible from the outside.

[0006] In addition, the embodiment aims to provide a display device having an improved dark area phenomenon through a first reflector and a second reflector while maintaining the performance of the camera.

[0007] In addition, the embodiment aims to provide a display device having enhanced transmittance by improving the structure of the display panel and the pixel aperture ratio.

[0008] The benefits of the embodiment are not limited thereto, and may also include benefits or effects that can be identified from the configurations or embodiments described below.

[0009] A display device according to an embodiment of the present disclosure may include: a backlight unit; a display panel disposed on the backlight unit and including a first display area and a second display area; and a first sensor and a second sensor disposed below the display panel, wherein the backlight unit may include: a light guide plate including a first light guide portion disposed below the first display area and a second light guide portion disposed below the second display area; a light source configured to irradiate light onto the light guide plate; and a first reflector disposed on the second light guide portion, and the first reflector may transmit light emitted from the first sensor and reflect light emitted from the second sensor.

[0010] Light emitted from the first sensor can be emitted to the outside by passing through the display panel, reflected by an external object, and received by the first sensor.

[0011] The light source is disposed on one side of the light guide plate, and the light guide plate may include an inclined surface disposed on the other side opposite to the one side, and the first reflector may be disposed on the inclined surface.

[0012] The inclined surface may not overlap with the upper surface of the light guide plate.

[0013] The thickness of the light guide plate may decrease along the inclined surface toward the other side.

[0014] The display device may further include a first light transmissive member disposed between the inclined surface of the light guide plate and the display panel.

[0015] The first light transmissive member may be disposed between the second light emitting unit of the second sensor and the first reflector.

[0016] The first sensor may include a first light emitting unit and an infrared camera, and the second sensor may include a second light emitting unit and an RGB camera.

[0017] The display device may further include a first substrate on which the first sensor is disposed and a second substrate on which the second sensor is disposed.

[0018] The first substrate and the second substrate may be disposed to cross each other.

[0019] The second light emitting unit may be adjacent to the infrared camera, and the first light emitting unit may be adjacent to the RGB camera.

[0020] The first sensor and the second sensor may emit light in a crossing direction.

[0021] The first substrate and the second substrate may be disposed parallel to each other, and the first substrate and the second substrate may be adjacent to each other in a first direction toward the side portion or a second direction perpendicular to the first direction.

[0022] The first sensor and the second sensor may at least partially overlap in the first direction.

[0023] The display device may further include a first light transmissive member disposed between the inclined surface of the light guide plate and the display panel, and a second reflector disposed on the inclined surface of the first light transmissive member, wherein the second reflector may reflect light emitted from the second sensor to the display panel.

[0024] The display device may further include a second light-transmissive member disposed on an inclined surface of the first light-transmissive member, wherein a second reflector is disposed between the second light-transmissive member and the first light-transmissive member.

[0025] The opening area of the first pixel in the first display area may have a different area from the opening area of the second pixel in the second display area.

[0026] The second pixel in the second display area may include a 2-1 pixel that outputs red, green, and blue light and a 2-2 pixel that outputs white light.

[0027] The area of the 2-1 pixel may be smaller than the area of the 2-2 pixel.

[0028] The display device may further include an optical sheet disposed on the backlight unit, wherein the optical sheet may include an opening corresponding to the second display area.

[0029] The light source may be disposed on one side of the light guide plate, and the first reflector may be disposed on the other side facing the one side of the light guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] By referring to the accompanying drawings and describing in detail the exemplary embodiments of the present disclosure, the above and other benefits, features, and advantages of the present disclosure will become more apparent to those of ordinary skill in the art, wherein:

[0031] Figure 1 is a perspective view of a display device according to an embodiment of the present disclosure;

[0032] Figure 2A is an exploded perspective view of a display device according to an embodiment of the present disclosure;

[0033] Figure 2B is a schematic view of a display device according to an embodiment of the present disclosure;

[0034] Figure 3 is a cross-sectional view of a display device according to a first embodiment of the present disclosure;

[0035] Figure 4 is a view for describing the cross-section and function of the first reflector in a display device according to an embodiment of the present disclosure;

[0036] Figure 5 is a flowchart showing a driving method of a display device according to an embodiment of the present disclosure;

[0037] Figure 6 is Figure 3 a first modification example of

[0038] Figure 7 is Figure 3 a second modification example of

[0039] Figure 8 is Figure 3 the third modification example of

[0040] Figure 9 a cross-sectional view of a display device according to a second embodiment of the present disclosure;

[0041] Figure 10 is Figure 9 a modification example of

[0042] Figure 11 a view showing the layer structure between the light guide plate and the first light-transmitting member and various layer structures between the first light-transmitting member and the second light-transmitting member;

[0043] Figure 12 is Figure 9 a modification example of and a cross-sectional view along line I-I';

[0044] Figure 13 is Figure 9 a modification example of and a cross-sectional view along line II-II';

[0045] Figure 14 a view showing a second display area according to various examples of a display device according to a second embodiment;

[0046] Figure 15 a first usage example of a first sensor and a second sensor in a display device according to an embodiment;

[0047] Figure 16 is Figure 15 a side view of

[0048] Figure 17 is Figure 15 a plan view of

[0049] Figure 18 a view for describing the effect of a first usage example of a first sensor and a second sensor in a display device according to an embodiment;

[0050] Figure 19 a second usage example of a first sensor and a second sensor in a display device according to an embodiment;

[0051] Figure 20 is Figure 19 a side view of

[0052] Figure 21 is Figure 19 a plan view of

[0053] Figure 22 is Figure 15 a modification example of

[0054] Figure 23 is Figure 22 a side view of;

[0055] Figure 24 is Figure 22 a plan view of;

[0056] Figure 25 shows various examples of the pixel structure of a display panel in a display device according to an embodiment;

[0057] Figure 26 shows various examples of a display panel and a polarizing plate in a display device according to various experimental examples;

[0058] Figure 27 is a set of captured images according to Figure 26 various experimental examples of;

[0059] Figure 28 is a view showing various pixel structures with different aperture ratios in a second display area of a display device;

[0060] Figure 29 is a cross-sectional view of a display device according to an embodiment including pixels with different aperture ratios; and

[0061] Figure 30 is a set of video images according to Figure 28 various pixel structures of; Detailed Description of the Embodiments

[0062] Hereinafter, exemplary embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings.

[0063] However, the technical concept of the present disclosure is not limited to the described some embodiments, but can be implemented in various different forms, and one or more components among the embodiments can be used by selectively coupling or replacing without departing from the scope of the technical concept of the present disclosure.

[0064] In addition, unless specifically defined and described explicitly, terms (including technical terms and scientific terms) used in the embodiments of the present disclosure can be interpreted as meanings that are generally understood by those skilled in the art to which the present disclosure pertains, and the meanings of commonly used terms (such as terms defined in a dictionary) can be interpreted in consideration of the context meanings of the related art.

[0065] In addition, the terms used in the embodiments of the present disclosure are used to describe the embodiments and are not intended to limit the present disclosure.

[0066] In the specification, unless otherwise specified in a phrase, the singular form may include the plural form, and when described as “at least one (or one or more) of A, B, and C,” it may include one or more of all possible combinations of A, B, and C.

[0067] In addition, terms such as first, second, A, B, (a), and (b) may be used to describe components of embodiments of the present disclosure.

[0068] These terms are only for the purpose of distinguishing one component from another, and the nature, order, sequence, etc. of the corresponding components are not limited by these terms.

[0069] In addition, when a first component is described as “connected,” “coupled,” or “joined” to a second component, it may include the case where the first component is directly connected, coupled, or joined to the second component, but it may also include the case where the first component is “connected,” “coupled,” or “joined” to the second component through other components present between the first component and the second component.

[0070] In addition, when a certain component is described as being formed or disposed “on (above)” or “under (below)” another component, the terms “on (above)” or “under (below)” may include not only the case where the two components are in direct contact with each other, but also the case where one or more other components are formed or disposed between the two components. In addition, when described as “on (above) or under (below),” it may include the meaning in both the upward direction and the downward direction based on one component.

[0071] Figure 1 is a perspective view of a display device according to an embodiment of the present disclosure.

[0072] Referring to Figure 1 , the display device 10 according to an embodiment may include a display panel 100 for displaying an image and a sensor CM for capturing an image.

[0073] The display device 10 according to an embodiment may be applied to various electronic devices such as smartphones, tablet computers, smart boards, televisions, and monitors. The display panel 100 may include a display area DA including a plurality of sub-pixels and a non-display area NDA located on at least one side of the display area DA. As shown, the non-display area NDA is provided on a part of the display panel 100, but is not limited thereto.

[0074] The display area DA may include a first display area DA1 and a second display area DA2. A plurality of pixels in the first display area DA1 may emit light and display an image through the emitted light. The second display area DA2 may overlap with the sensor CM. The second display area DA2 may include a sensing area CA that overlaps with the sensor CM and a surrounding area SA adjacent to the sensing area CA.

[0075] The sensor CM may be disposed under the display panel 100. The sensor CM may be arranged to be spaced apart from the display panel 100. The area of the second display area DA2 is formed to be larger than the area of the sensor CM, but is not limited thereto. For example, the second display area DA2 and the sensor CM may be formed to have substantially the same area, or the second display area DA2 may be formed to be smaller than the sensor CM.

[0076] In addition, the sensor CM is formed to overlap with the upper region of the display area DA, but is not limited thereto. Depending on the electronic device to which the display device 10 is applied, the position of the sensor CM may vary under the display panel 100. For example, the sensor CM may overlap with the upper left region or the upper middle region of the display area DA. Corresponding to the position of the sensor CM, the second display area DA2 may also be provided in the upper left region or the upper middle region.

[0077] In addition, the sensor CM may include a first sensor CM1 and a second sensor CM2. The first sensor CM1 may include a first light emitting unit and a first light receiving unit. The second sensor CM2 may include a second light emitting unit and a second light receiving unit. The first sensor CM1 and the second sensor CM2 may receive light of different wavelength bands. In addition, the first light emitting unit and the second light emitting unit may emit light of different wavelength bands. The light emitting unit may correspond to the "emitting unit", and the light receiving unit may correspond to the "receiving unit".

[0078] Figure 2A is an exploded perspective view of a display device according to an embodiment of the present disclosure. Figure 2B is a schematic cross-sectional view of a display device according to an embodiment of the present disclosure.

[0079] Referring to Figure 2A and Figure 2B According to an embodiment, the display device 10 may include a display panel 100, a backlight unit 300, and a housing member.

[0080] The display panel 100 may include a lower substrate 110, an upper substrate 120, and a liquid crystal layer 130 interposed between the lower substrate 110 and the upper substrate 120. The lower substrate 110 and the upper substrate 120 may be formed of glass or plastic.

[0081] The signal lines and pixels can be disposed on the upper surface of the lower substrate 110 of the display panel 100. The signal lines can include data lines and gate lines that cross each other, a common line for supplying a common voltage to the common electrode, and a gate control signal line for supplying a control signal to the gate driving circuit. The pixels can be disposed in the crossing regions of the data lines and the gate lines. Each pixel can include a thin film transistor (TFT), a pixel electrode, and a common electrode. The thin film transistor can supply the data voltage of the data line to the pixel electrode in response to the gate signal of the gate line.

[0082] The liquid crystal of the liquid crystal layer 130 can be driven by an electric field generated by the potential difference between the data voltage supplied to the pixel electrode and the common voltage supplied to the common electrode, thereby adjusting the transmission amount of the light incident from the backlight unit 300.

[0083] A black matrix and a color filter can be disposed on the bottom surface of the upper substrate 120 of the display panel 100. The bottom surface of the upper substrate 120 can be the surface facing the lower substrate 110. As described below, the display panel 100 can have an inverting structure in which the black matrix and the color filter are disposed on the upper substrate 120.

[0084] In addition, the common electrode can be disposed on the bottom surface of the upper substrate 120 by a vertical electric field driving method such as a twisted nematic (TN) mode and a vertical alignment (VA) mode, and disposed on the upper surface of the lower substrate 110 by a horizontal electric field driving method such as an in-plane switching (IPS) mode and a fringe field switching (FFS) mode.

[0085] Since the black matrix is formed of a light-shielding material having a matrix structure, light leakage to regions outside the pixel region can be blocked.

[0086] The color filter can be located between the black matrices in the pixel region. The color filter can include a red color filter, a green color filter, and a blue color filter.

[0087] The upper polarizing plate 142 can be located on the upper substrate 120 of the display panel 100. In addition, the lower polarizing plate 141 can be located on the lower substrate 110 of the display panel 100. The transmission axis of the upper polarizing plate 142 can intersect or be orthogonal to the transmission axis of the lower polarizing plate. In addition, an alignment layer for setting the pretilt angle of the liquid crystal can be disposed on the inner surfaces of the upper substrate 120 and the lower substrate 110 that are in contact with the liquid crystal.

[0088] The backlight unit 300 may include a light source 310, a light guide plate 320, a reflector RF, an optical sheet 330, a first reflector 340, etc. The backlight unit 300 may convert the light emitted from the plurality of light sources 310 into uniform surface light through the light guide plate 320 and the optical sheet 330 and provide the light to the display panel 100. The backlight unit 300 is described as being implemented in an edge type, but is not limited thereto, and may also be implemented in a direct type.

[0089] The light source 310 may be single or multiple. The light source 310 may be implemented as a light emitting diode (LED). In this case, the light emitting diode may output light of various bands. For example, the light emitting diode may include at least one of a blue light emitting diode that outputs blue light, a red light emitting diode that outputs red light, and a magenta light emitting diode that outputs magenta light which is a mixture of blue light and red light. The light emitted from the light emitting diode may be converted into white light by a wavelength conversion layer (not shown) and incident on the light guide plate 320.

[0090] The light source 310 may be disposed on at least one side surface of the light guide plate 320 to radiate light on the side surface of the light guide plate 320. The light source 310 may be mounted on a light source circuit board and be turned on and off by receiving a driving current from a light source driving circuit.

[0091] The light guide plate 320 may convert the light emitted from the light source 310 into surface light and radiate the light to the display panel 100. The reflector RF may be disposed on the bottom surface of the light guide plate 320 to reflect the light guided downward from the light guide plate 320.

[0092] The light guide plate 320 may include a first light guide portion 320a and a second light guide portion 320b. The first light guide portion 320a may be disposed below the first display area DA1. The first light guide portion 320a may overlap with the first display area DA1 in the stacking direction. The stacking direction (Z-axis direction) may correspond to the direction from the light guide plate 320 toward the display panel 100. In addition, the second light guide portion 320b may be disposed below the second display area DA2. The second light guide portion 320b may overlap with the second display area DA2 in the stacking direction.

[0093] The optical sheet 330 may be disposed between the light guide plate 320 and the display panel 100. The optical sheet 330 may include at least one prism sheet or at least one diffusion sheet. The optical sheet 330 may diffuse the light incident from the light guide plate 320 and refract the light path such that the light is incident at an angle substantially perpendicular to the light incident surface of the display panel 100.

[0094] The first reflector 340 can be disposed obliquely in the second display area DA2. Specifically, the first reflector 340 can be disposed obliquely with respect to the direction (X-axis direction) from the light source 310 toward the light guide plate. In addition, the first reflector 340 can be disposed obliquely with respect to the upper and lower surfaces of the light guide plate 320. For example, the first reflector 340 can be located on the inclined surface of the light guide plate 320. In addition, the inclined surfaces of the first reflector 340 and the light guide plate 320 can be positioned at a predetermined angle other than a right angle with respect to the upper and lower surfaces of the light guide plate 320.

[0095] The first reflector 340 can be disposed between the first light guide portion 320a and the second light guide portion 320b. The light guide plate 320 can include a chamfered portion CH1 that overlaps with the second display area DA2, such that the first reflector 340 is disposed on the chamfered portion CH1. For example, the chamfered portion CH1 can be located at the edge of the light guide plate 320 or in a partial area of the light guide plate 320. For example, the first reflector 340 can be located at the edge of the light guide plate 320.

[0096] The first reflector 340 can be disposed on the chamfered portion CH1 having the inclined surface SS1. The first reflector 340 can have an inclined surface that is not perpendicular to the direction (X-axis direction) from the light source 310 toward the light guide plate 320. In addition, the reflecting surface of the first reflector 340 can form a predetermined angle by intersecting with the direction from the light source 310 toward the light guide plate 320.

[0097] Corresponding to the inclined surface SS1 and the first reflector 340, the optical sheet 330 can include an opening 331 formed in the sensor or the second display area DA2. With this configuration, the brightness of the light incident below the second display area DA2 can be increased. However, the present disclosure is not necessarily limited thereto, and the opening of the optical sheet 330 can be omitted.

[0098] The sensor CM can include a first sensor CM1 and a second sensor CM2. The first sensor CM1 can include a first light emitting unit Tx1 and a first light receiving unit Rx1. The second sensor CM2 can include a second light emitting unit Tx2 and a second light receiving unit Rx2. In addition, the second sensor CM2 can include only the second light emitting unit Tx2. When the light emitted from the second light emitting unit Tx2 is provided to the display panel, the dark area of the second display area DA2 can be reduced.

[0099] The first sensor CM1 and the second sensor CM2 can be referred to as a "camera module", "camera sensor", "camera unit", etc. For example, the first sensor CM1 can be an infrared camera. Alternatively, the first sensor CM1 can be an infrared sensor (IR sensor). The second sensor CM2 can be an RGB sensor or an RGB camera.

[0100] The first light-emitting unit of the first sensor CM1 can emit infrared rays (IR). The first light-receiving unit can receive the reflected light of the radiated infrared rays reflected from an object (e.g., a person, etc.). Therefore, the first sensor CM1 can adjust the light amount according to the intended use or the distance to the user. Based on the intended use or the distance to the user, the light amount of the first sensor CM1 can have an optimal light amount. The first sensor CM1 according to various embodiments can operate using a preset optimal light amount corresponding to the intended use or the distance to the user.

[0101] In addition, the first sensor CM1 can extract features of the object. According to various embodiments, the first sensor CM1 can generate image data or the like that can recognize that the object is the face of the user when the object is the face of the user by receiving the reflected light. In addition, the first sensor CM1 can generate data for distinguishing the direction and position of the face. For example, the first sensor CM1 can generate or extract data to recognize the shape of the face and recognize the positions of the eyes, nose, mouth, forehead, etc. of the face. In addition, the recognition of the object, the extraction and generation of data, etc. can be performed in the display device or the electronic device provided with the first sensor CM1 rather than the first sensor CM1. In the above description, the object is described as the face of the user, but it is not limited thereto. In addition, the sensor CM can not only extract features of the object, but also extract the heart rate, iris information, etc., and extract various other object information. In addition, the second sensor CM2 is an RGB camera and can receive RGB image data.

[0102] The housing member may include a bottom cover 410, a support frame, and a top cover 420.

[0103] The bottom cover 410 may have a structure surrounding the backlight unit 300 or the display panel 100. For example, the bottom cover 410 may be a quadrilateral frame. In addition, the bottom cover 410 may be formed of various materials. For example, the bottom cover 410 may be formed of metal. Therefore, the reliability of the display device can be improved.

[0104] The top cover 420 may surround the edge of the display panel 100, the upper surface and the side surfaces of the support frame, and the side surface of the bottom cover 410. However, the sizes of the top cover and the bottom cover can be changed in various ways.

[0105] In addition, the top cover 420 may be made of electro-galvanized iron (EGI) or stainless steel, etc. The top cover 420 can be fixed to the support frame by a hook or a screw. In addition, a buffer member may be located between the upper substrate and the top cover. As a result, the upper substrate of the display panel 100 can be protected from the impact by the top cover 420.

[0106] Figure 3 is a cross-sectional view of a display device according to a first embodiment of the present disclosure.Figure 4 is a view for describing a cross-section and functions of a first reflector in a display device according to an embodiment of the present disclosure. Figure 5 is a flowchart showing a driving method of a display device according to an embodiment of the present disclosure. Figure 6 is Figure 3 a first modification example of Figure 7 is Figure 3 a second modification example of Figure 8 is Figure 3 a third modification example of

[0107] Referring to Figure 3 , as described above, the light guide plate 320 may include an upper surface US1, a bottom surface BS1, and an inclined surface SS1. For example, the upper surface US1 and the bottom surface BS1 may be flat surfaces and may be surfaces facing each other in the stacking direction.

[0108] In the light guide plate 320, the upper surface US1 and the bottom surface BS1 may be spaced apart from each other and may be connected by side surfaces and the inclined surface SS1. The inclined surface SS1 may be located in a partial region of the light guide plate 320. Additionally, the inclined surface SS1 may be located inside or at an edge of the light guide plate 320, and may be located between the upper surface US1 and the bottom surface BS1 of the light guide plate 320 or outside the upper surface US1 or the bottom surface BS1.

[0109] The inclined surface SS1 may be located on the second light guide portion 320b. Additionally, the inclined surface SS1 may be located below the second display area DA2. Additionally, the inclined surface SS1 may be a surface inclined at a predetermined angle with respect to the upper surface US1 and the bottom surface BS1. The inclined surface SS1 may not overlap with the upper surface US1 of the light guide plate.

[0110] The inclined surface SS1 may be located on the light guide plate 320, particularly on a light-opposite portion or a relative light-incident portion opposite to the light-incident portion facing the light source 310.

[0111] Accordingly, the first reflector 340 on the inclined surface SS1 can easily reduce a dark region generated by the first sensor CM1 by reflecting visible light emitted to the light-opposite portion. In an embodiment, the first reflector 340 may reflect light emitted from the light source 310 and the second sensor CM2.

[0112] The first reflector 340 can be in contact with the light guide plate 320 or the second light guide part 320b. In particular, the first reflector 340 can be disposed above the inclined surface SS1. For example, the first reflector 340 can be in contact with the inclined surface SS1. Additionally, the first adhesive member AD1 can be located between the first reflector 340 and the inclined surface SS1. Through the first adhesive member AD1, the first reflector 340 can be joined to the inclined surface SS1. Thus, the joining strength between the first reflector 340 and the light guide plate 320 can be increased.

[0113] Additionally, the inclined surface SS1 can be located between the first reflector 340 and the first sensor CM1. Additionally, an air gap can be formed between the second light guide part 320b and the first sensor CM1.

[0114] The first reflector 340 can be referred to as a "filter" or a "first reflecting member". The first reflector 340 can be configured to reflect light in the visible band and transmit light in the infrared band. For example, the first reflector 340 can be a dichroic filter, but is not limited thereto, and various types of filters can be applied without any limitation.

[0115] Additionally, the inclined surface SS1 can have various optical patterns for diffusion. Thus, the light reflected from the first reflector 340 disposed on the inclined surface SS1 can be diffused toward the display panel 100. Therefore, the dark areas in the second display area can be reduced, and the appearance of bright lines and the like caused by the reflected light can be suppressed. That is, the light uniformity can be improved.

[0116] Further referring to Figure 4 , the first reflector 340 can include a light-transmitting substrate 341 and a plurality of layers 342. For example, the light-transmitting substrate 341 can be formed of a light-transmitting material such as glass.

[0117] Additionally, the plurality of layers 342 can be located on the light-transmitting substrate 341. For example, the plurality of layers 342 can include a first layer L1 and a second layer L2. The first layer L1 can be located between the second layer L2 and the light-transmitting substrate 341. Additionally, the first layer L1 and the second layer L2 can be formed of materials having different refractive indices.

[0118] For example, compared with the second layer L2, the first layer L1 can have a high refractive index characteristic. Additionally, compared with the first layer L1, the second layer L2 can have a low refractive index characteristic. That is, the first layer L1 can be a high refractive index layer, and the second layer L2 can be a low refractive index layer.

[0119] In this case, the first layer L1 and the second layer L2 may have a predetermined refractive index according to the desired wavelength of light for transmission and reflection. Additionally, each of the first layer L1 and the second layer L2 may be formed of multiple layers instead of a single layer, and multiple first layers L1 and multiple second layers L2 may be alternately stacked.

[0120] The reflected light RL with respect to the incident light IL in the entire wavelength band may be light in the visible wavelength band. Additionally, the transmitted light TL may be light in the infrared wavelength band.

[0121] Returning to the reference Figure 3 , the first reflector 340 may reflect the light LG1 and LG4 in the visible wavelength band. The first reflector 340 may reflect the light LG1 emitted from the first light guide unit 320a downward and the light LG4 emitted from the second sensor CM2 upward.

[0122] Specifically, the second light emitting unit TX2 of the second sensor CM2 may perform the same or substantially the same function as the light source. For example, the second light emitting unit TX2 of the second sensor CM2 may emit light in the visible wavelength band. The first reflector 340 may reflect the light LG4 emitted from the second light emitting unit upward or toward the display panel 100. Additionally, external light or visible light reflected from an object may be reflected by the first reflector 340 and provided to the second sensor CM2.

[0123] According to an embodiment, since the light LG4 emitted from the second light emitting unit is emitted to the second display area DA2, the dark area generated in the second display area DA2 may be reduced. Additionally, when the light amount of the second light emitting unit is controlled by the second sensor CM2, the appearance of bright lines or the like may be suppressed, or the light uniformity between the first display area DA1 and the second display area DA2 may be improved.

[0124] The first reflector 340 may transmit the light emitted from the first sensor CM1. For example, the first reflector 340 may transmit the light LG2 and LG3 in the infrared wavelength band. Thus, the light LG3 reflected from an object or an external object in the light LG2 emitted from the first light emitting unit of the first sensor CM1 may be provided to the first light receiving unit.

[0125] Additionally, corresponding to the position of the inclined surface SS1, the first reflector 340 may be positioned to face the light source provided on one side of the light guide plate 320. For example, the first reflector 340 may be provided on the other side of the light guide plate 320. In an embodiment of the present disclosure, one side of the light guide plate 320 may correspond to the light incident portion adjacent to the light source, and the other side of the light guide plate 320 may correspond to the light opposite portion or the opposite light incident portion opposite to the light incident portion. In other words, the first reflector 340 may be positioned closer to the light opposite portion or the opposite light incident portion than to the light incident portion.

[0126] In addition, the upper surface US1 of the light guide plate 320 may be disposed adjacent to the optical sheet 330. For example, the upper surface US1 of the light guide plate 320 may be disposed closer to the optical sheet 330 than the bottom surface BS1. In addition, the optical sheet 330 may be located on the upper surface of the light guide plate 320. In addition, the upper surface US1 of the light guide plate 320 may be positioned closer to the display panel 100 than the bottom surface BS1. In addition, the optical sheet 330 may be located on at least a part of the upper surface US1.

[0127] The optical sheet 330 may not be located in the region where it overlaps with the first sensor CM1 on the upper surface US1. That is to say, the optical sheet 330 may not overlap with the first sensor CM1. However, as described above, the optical sheet 330 may not have an opening and may at least partially overlap with the first sensor CM1 or the second light guide portion 320b in the stacking direction.

[0128] The bottom surface BS1 of the light guide plate 320 may be positioned adjacent to the bottom cover 410. The bottom surface BS1 of the light guide plate 320 may be positioned closer to the bottom cover 410 than the upper surface US1. In addition, the first reflector RF1 may be disposed on the bottom surface BS1 of the light guide plate 320.

[0129] The first reflector RF1 may reflect the light guided downward from the light guide plate 320 into the light guide plate 320. The first reflector RF1 may not overlap with the inclined surface SS1. That is to say, the first reflector RF1 may be disposed so as not to be aligned with the inclined surface SS1 in the stacking direction.

[0130] Therefore, the first reflector RF1 may also be disposed so as not to be aligned with the first sensor CM1 that overlaps with the inclined surface SS1 in the stacking direction. In other words, the first reflector RF1 may be disposed so as to be spaced apart from the first sensor CM1. The first reflector RF1 may correspond to the above-mentioned "reflector".

[0131] The inclined surface SS1 may be connected to the upper surface US1 and the bottom surface BS1. For example, the inclined surface SS1 may be located between the upper surface US1 and the bottom surface BS1. In addition, the inclined surface SS1 may correspond to the chamfered portion of the light guide plate 320.

[0132] The inclined surface SS1 of the light guide plate 320 may not overlap with the upper surface US1 in the stacking direction. In addition, as described above, the light guide plate 320 may have a protruding region PR that extends more downward than the first light guide portion 320a or the bottom surface BS1. In addition, the inclined surface SS1 may be located in the protruding region PR.

[0133] According to an embodiment, the thickness d1 of the light guide plate 320 below the first display area DA1 can be reduced by the protruding area PR, thereby miniaturizing the display device. In addition, even when the incident area of the first reflector 340 according to the viewing angle of the first sensor CM1 increases, the thickness increase of the light guide plate 320 can be reduced or prevented by the protruding area. That is, since the light guide plate 320 has a protruding area PR in a partial area, the light guide plate 320 can maintain a light weight and miniaturization even if there is any change in the incident angle of the first reflector 340.

[0134] The bottom cover 410 may include a base portion 411 and a protruding portion 412. The protruding portion 412 may be located in an area of the bottom cover 410 and may be a portion extending downward from the base portion 411. For example, the first sensor CM1 and the second sensor CM2 may be accommodated in the protruding portion 412. The accommodation space for the first sensor CM1 and the second sensor CM2 can be easily ensured by the protruding portion 412. The protruding portion 412 may be located at the edge of the base portion 411 or inside the base portion 411. The protruding portion 412 may be surrounded by the base portion 411. For example, the protruding portion 412 may be located within the edge of the base portion 411. The position of the protruding portion 412 can be adjusted in various ways corresponding to the positions of the first sensor CM1 and the second sensor CM2.

[0135] Corresponding to the above-mentioned protruding portion 412, the light guide plate 320 may have a protruding area PR extending downward. Therefore, the thickness d2 or the maximum thickness of the light guide plate 320 at the inclined surface SS1 may be greater than the thickness d1 of the light guide plate 320 at the bottom surface BS1 (or in the first display area). Below the second display area DA2, the inclined surface SS1 may be located in the protruding area PR.

[0136] Corresponding to the protruding area PR, the light guide plate 320 may include an extending surface PS1 extending downward from the bottom surface BS1. The thickness of the light guide plate 320 may increase due to the extending surface PS1.

[0137] As the inclined surface SS1 gets closer to the second sensor CM2, the separation distance between the inclined surface SS1 and the first sensor CM1 may decrease. In addition, as the light guide plate 320 gets closer to the second sensor CM2 below the inclined surface SS1, the thickness d2 of the light guide plate 320 may decrease. According to the inclined structure of the inclined surface SS1, the first reflector 340 provided on the inclined surface SS1 can reflect the light LG1 output from the light source downward toward the first sensor CM1.

[0138] The first light transmissive member PR1 may be located on the first reflector 340. The first light transmissive member PR1 may overlap the inclined surface SS1 in the stacking direction. In addition, the first light transmissive member PR1 may be located on the other side of the light guide plate 320.

[0139] For example, the first light-transmissive member PR1 may be located between the light guide plate 320 and the support frame G. Additionally, the first light-transmissive member PR1 may be located between the first reflector 340 and the second sensor CM2. The first light-transmissive member PR1 may be located between the first reflector 340 and the display panel 100. Additionally, the first light-transmissive member PR1 may be located between the inclined surface SS1 and the display panel 100. Additionally, the first light-transmissive member PR1 may be disposed between the second light-emitting unit of the second sensor and the first reflector 340. Accordingly, foreign substances and the like can be prevented from being introduced into the first reflector 340 that transmits infrared wavelength light and reflects visible wavelength light. As a result, improved sensing sensitivity can be maintained and the dark region can be easily reduced.

[0140] The support frame G may be provided at an end portion of the light guide plate 320. As described above, the support frame G may surround the light guide plate 320 and the like. Additionally, the support frame G may be coupled to the bottom cover 410 (or the top cover) by a fixing member. Alternatively, the support frame G may be coupled to the bottom cover 410 by various coupling structures (e.g., passing through, etc.). For example, the bottom cover 410 may pass through at least a partial region of the support frame G.

[0141] Additionally, the second adhesive member AD2 may be located between the support frame G and the display panel 100. Specifically, the second adhesive member AD2 may overlap with a non-display region of the display panel 100. The second adhesive member AD2 may have a form such as a tape or the like.

[0142] A second reflective sheet (not shown) may be further provided between the extending surface PS1 and the inner surface of the protrusion 412 facing the extending surface PS1.

[0143] The protruding region PR may be a member separated from the light guide plate 320. Accordingly, in order to couple the protruding region PR to the light guide plate 320, an additional adhesive member may be located between the protruding region PR and the first light guide portion 320a.

[0144] The display device according to an embodiment may include a substrate SB provided with a first sensor CM1 and a second sensor CM2. The substrate SB may include a first substrate SB1 and a second substrate SB2. The first substrate SB1 and the second substrate SB2 may be configured in a separated, connected, or coupled structure. Additionally, the first sensor CM1 may be provided on the first substrate SB1. The second sensor CM2 may be provided on the second substrate SB2. Additionally, the substrate SB may be located inside or outside the bottom cover 410. Alternatively, at least a part of the substrate SB may overlap with the bottom cover 410 in the first direction (X-axis direction).

[0145] The first substrate SB1 and the second substrate SB2 can be electrically connected to the sensor driver. Thus, as described below, control signals for the first sensor CM1 and the second sensor CM2 can be applied to the first substrate SB1 and the second substrate SB2 depending on whether the sensors are driven (on / off).

[0146] The first substrate SB1 and the second substrate SB2 can be arranged to cross each other. The second substrate SB2 can be arranged at a predetermined angle with respect to the first substrate SB1. Additionally, the upper surface of the second substrate SB2 and the upper surface of the first substrate SB1 can be non-parallel to each other. For example, the second substrate SB2 can be arranged perpendicular to the first substrate SB1.

[0147] The first light-emitting unit TX1 of the first sensor CM1 and the second light-emitting unit TX2 of the second sensor CM2 can be misaligned in a first direction (X-axis direction). In an embodiment, the first direction can correspond to the direction from the light source toward the light guide plate 320. Additionally, the first light-receiving unit RX1 of the first sensor CM1 can be misaligned with the second light-receiving unit RX2 of the second sensor CM2 in the first direction.

[0148] For example, the second light-emitting unit TX2 can be positioned adjacent to the first light-receiving unit RX1 which is an infrared camera. The first light-emitting unit TX1 can be positioned adjacent to the second light-receiving unit RX2 which is an RGB camera. Additionally, the first sensor CM1 and the second sensor CM2 can emit light in directions that cross each other. With this configuration, each of the light emitted from the first light-emitting unit TX1 and the second light-emitting unit TX2 can be incident on different surfaces of the first reflector 340. Thus, the sensing accuracy can be improved. Additionally, the second sensor CM2 can be located between the first sensor CM1 and the end of the display panel 100. Thus, the size of the second display area DA2 can be reduced or minimized. That is, the area where the dark area needs to be reduced can be decreased.

[0149] In the modified example, the inclined surface SS1 can overlap not only with the second display area DA2 that overlaps with the first sensor CM1, but also with the area that overlaps with the relative light incident portion of the first display area DA1. For example, the inclined surface SS1 can be located on the entire relative light incident portion. That is, the inclined surface SS1 can have an area other than the area that overlaps with the first sensor CM1. In addition, the inclined surface SS1 can overlap with the area that overlaps with the relative light incident portions of the second display area and the first display area. Therefore, the first reflector 340 can also be located on the entire relative light incident portion. That is, the first reflector 340 can also be located in an area outside the area that overlaps with the first sensor CM1. In addition, the first reflector 340 can overlap with the area that overlaps with the relative light incident portions of the second display area and the first display area. With this configuration, even when the amount of light guided to the relative light incident portion is small, the light can be reflected by the first reflector 340 to the display panel 100. Therefore, the brightness of the entire display panel can be uniform.

[0150] Referring to Figure 5 , the method for driving a display device according to an embodiment may include determining whether the display device is being driven (S11), determining whether a sensor is being operated (S12), operating an auxiliary light source (S13 and S14), and determining the light transmission mode of the liquid crystal layer (S15).

[0151] When determining whether the display device is being driven (S11), it can be determined whether the display device is in an on state or an off state. For example, when power is supplied to the display device, the driving of the display device according to the embodiment can be started.

[0152] When determining whether the sensor is being operated S12, the host can send a driving signal of the second sensor to the sensor controller. The sensor controller can control the driving of the first sensor and the second sensor. Based on the received driving signal, the second sensor can perform an on / off operation.

[0153] Whether the auxiliary light source is operated can be determined based on whether the second sensor is driven (S13 and S14). The host can send a control signal of the second light-emitting unit synchronized with the drive signal of the second sensor to the sensor controller. Therefore, the sensor controller can determine whether the second light-emitting unit is operated (turned on / off) based on the drive of the second sensor. For example, when the drive of the second sensor is turned on and it is operating in the shooting mode, the drive of the second light-emitting unit (auxiliary light source) can be turned off. Additionally, when the drive of the second sensor is turned off and the shooting mode ends, the second light-emitting unit (auxiliary light source) can be turned on to eliminate the dark area in the second display area. In this case, the display device can perform full-screen display. That is, during the non-shooting mode period, the display device can display an image without a dark area even in the second display area.

[0154] Determination of the light-transmitting mode of the liquid crystal layer (S15) can be performed when the auxiliary light source is turned off. The host can send a signal synchronized with the drive signal of the second sensor to the panel driver. The panel driver can drive the panel based on the received control signal.

[0155] That is, when the second sensor is operating and the auxiliary light source is turned off, the panel driver can drive the liquid crystal layer in the light-transmitting mode. The light-transmitting mode can be defined as driving the liquid crystal so that the light-transmitting amount of the display panel increases or is maximized. The light-transmitting mode aims to increase or maximize the amount of light incident on the image sensor and can be distinguished from the drive mode in which the transmittance of the panel is adjusted to achieve an image.

[0156] The light-transmitting mode can be performed only in the second display area. When the second display area is operating in the light-transmitting mode, the first display area can be operating in the drive mode for displaying an image. Therefore, power efficiency can be improved, and image sensing can be accurately performed.

[0157] In the following various embodiments, modifications, and usage examples, in addition to the content described below, the content described in the embodiments described in the present specific embodiment can be applied.

[0158] Refer to Figure 6 , in this usage example, the substrate SB can include the first substrate SB1 and the second substrate SB2 as described above. The first substrate SB1 and the second substrate SB2 can be separated. For example, the first substrate SB1 and the second substrate SB2 can be arranged to be spaced apart by a predetermined distance (gap) in the first direction.

[0159] The first substrate SB1 can be located inside or outside the protrusion 412 of the bottom cover 410. For example, at least a part of the first substrate SB1 can be located outside the protrusion 412. Additionally, the second substrate SB2 can be located inside or outside the protrusion 412. For example, at least a part of the second substrate SB2 can be located outside the protrusion 412.

[0160] At least a part of the bottom cover 410 or the protrusion 412 can be present between the first substrate SB1 and the light guide plate 320. Additionally, at least a part of the bottom cover 410 or the protrusion 412 can be present between the second substrate SB2 and the light guide plate 320. Therefore, the gap between the light guide plate 320 and the bottom cover 410 can be reduced. Therefore, the thickness of the display device can be reduced.

[0161] Additionally, it can facilitate the movement of the first substrate SB1 or the second substrate SB2. For example, when the movement of the first sensor CM1 on the first substrate SB1 is required or the movement of the second sensor CM2 on the second substrate SB2 is required, alignment and the like can be easily performed by moving each substrate. Additionally, repair due to misalignment can also be more easily performed.

[0162] Referring to Figure 7 , in this usage example, the substrate SB can include the first substrate SB1 and the second substrate SB2 as described above. The first substrate SB1 and the second substrate SB2 can be formed separately or integrally.

[0163] The display device can include a flat layer AM provided to cover the second sensor CM2 on the second substrate SB2. The flat layer AM can cover the upper surface or a part of the side surface of the second sensor CM2. Therefore, contact between the second sensor CM2 and the first light-transmitting member PR1 can be reduced or prevented, or position adjustment can be easily achieved. Additionally, the light emitted from the second sensor CM2 can efficiently enter the first light-transmitting member PR1. Additionally, the flat layer AM can protect the second sensor CM2 and the first light-transmitting member PR1 from the influence of external impacts, thereby improving the reliability of the display device. Additionally, the heat generated from the second sensor CM2 can be easily transferred to the outside, the second substrate SB2, etc.

[0164] The display device can include a fourth adhesive member AD4 provided between the first light guide portion 320a and the second light guide portion 320b. The thickness of the first light guide portion 320a and the second light guide portion 320b can be easily adjusted by the fourth adhesive member AD4. Additionally, the manufacturing and assembly of the light guide plate can be easily achieved.

[0165] Referring to Figure 8, in this usage example, the substrate SB may include the first substrate SB1 and the second substrate SB2 as described above. The first substrate SB1 and the second substrate SB2 may be formed separately or integrally.

[0166] In this case, the second light receiving unit RX2 may be disposed on the second substrate SB2 below the second display area DA2. Additionally, the second light receiving unit RX2 may be located in the area between the first light emitting unit TX1 and the first light receiving unit RX1 on the first substrate SB1.

[0167] Additionally, the second light emitting unit TX2 or the auxiliary light source may be located in the area adjacent to the second display area DA2. The second light emitting unit TX2 or the auxiliary light source may be located in the area of the light opposing part and may receive power through a separate circuit board. Thus, the light emitted from the second light emitting unit TX2 in the area of the relative light incident part may be reflected by the first reflector 340 to the display panel 100. Additionally, the external light or visible light reflected from the object may be provided back to the second light receiving unit RX2. With this configuration, reduction of the dark area of the second display area DA2 and improvement of light uniformity can be achieved.

[0168] Figure 9 is a cross-sectional view of a display device according to the second embodiment, Figure 10 is Figure 9 a modified example of Figure 11 (a) of Figure 11 shows the layer structure between the light guide plate and the first light transmissive member, and Figure 11 (b) to

[0169] Referring to Figure 9 , the display device according to the second embodiment may include a display panel 100, a backlight unit 300, a sensor CM, and a housing member. Additionally, the backlight unit 300 may further include a first light transmissive member PR1, a second reflector 350, and a fifth adhesive member AD5. Additionally, the content described in other embodiments, etc., may be applied to this embodiment in addition to the content described below.

[0170] In this embodiment, the light guide plate 320 may have an inclined surface SS1 overlapping the second display area DA2. Additionally, the first reflector 340 may be disposed on the inclined surface SS1. Additionally, the first light transmissive member PR1 may be disposed on the inclined surface SS1 or the first reflector 340. At least a portion of the first reflector 340, the first light transmissive member PR1, and the second reflector 350 may overlap in the first direction.

[0171] In addition, the second reflector 350 may be disposed on the first light transmissive member PR1. The second reflector 350 may be disposed on the inclined surface SS2 of the first light transmissive member PR1. Thus, the second reflector 350 may also be disposed obliquely in the second display area DA2. Specifically, the second reflector 350 may be disposed obliquely along the direction from the light source 310 toward the light guide plate (in the first direction). In addition, the second reflector 350 may be parallel to the first reflector 340. With this configuration, the light reflected by the second reflector 350 may be provided to the first reflector 340, or an opposite optical path may be formed.

[0172] The second reflector 350 may reflect light in the visible band like the first reflector 340. The second reflector 350 may be formed of the same or different material as the first reflector 340. For example, when the first reflector 340 is a filter, the second reflector 350 may include a mirror that performs reflection. For example, the second reflector 350 may be a reflector made of a metal having a high light reflectivity (e.g., silver (Ag)).

[0173] The first sensor CM1 may be located below the first reflector 340. The first sensor CM1 may overlap with the first reflector 340. The second sensor CM2 may be located below the second reflector 350. The second sensor CM2 may overlap with the second reflector 350.

[0174] With this configuration, the light emitted from the first sensor CM1 may pass through the first reflector 340, and the light reflected from the object may also pass through the first reflector 340 and may be provided to the first sensor CM1.

[0175] In addition, the light emitted from the second sensor CM2 may be reflected from the second reflector 350 to the first reflector 340, and then reflected from the first reflector 340 to the second display area (or display panel). Conversely, external or light reflected from the object may be reflected to the second sensor CM2 through the first reflector 340 and the second reflector 350. Thus, since sensing is performed by the first sensor CM1 and the second sensor CM2, the dark area of the second display area DA2 may be reduced.

[0176] The fifth adhesive member AD5 may be disposed between the second reflector 350 and the inclined surface SS2 of the first light transmissive member PR1. The fifth adhesive member AD5 may be located on the inclined surface SS2 of the first light transmissive member PR1. Thus, the second reflector 350 and the first light transmissive member PR1 may be coupled by the fifth adhesive member AD5.

[0177] The first substrate SB1 and the second substrate SB2 can be arranged in parallel. The first substrate SB1 and the second substrate SB2 can be arranged adjacent to each other in a first direction or in a second direction perpendicular to the first direction (or in the stacking direction). For example, the first substrate SB1 and the second substrate SB2 can have coplanar upper surfaces.

[0178] At least a part of the first sensor CM1 and the second sensor CM2 can overlap in the first direction. Additionally, at least a part of the first sensor CM1 and the second sensor CM2 can overlap in a second direction perpendicular to the first direction and in the stacking direction. In the present embodiment, the first sensor CM1 and the second sensor CM2 can be arranged in sequence along the first direction, and the first substrate SB1 and the second substrate SB2 can also be arranged in sequence along the first direction. The first substrate SB1 and the second substrate SB2 can be configured as one substrate SB.

[0179] Therefore, both the first sensor and the second sensor are arranged on one substrate or on the same surface, so that the assembly of the substrate and the sensor can be easily performed. Additionally, light can be concentrated in a region adjacent to a non-display region or a border outside the second display region and can not be emitted.

[0180] Referring to Figure 10 , the display device can further include a second light-transmissive member PR2. The second light-transmissive member PR2 can be disposed on the inclined surface SS1 of the first light-transmissive member PR1. Additionally, a second reflector 350 can be disposed between the second light-transmissive member PR2 and the first light-transmissive member PR1. For example, the first reflector 340, the first light-transmissive member PR1, the second reflector 350, and the second light-transmissive member PR2 can overlap in the first direction.

[0181] The second light-transmissive member PR2 can be located above the inclined surface SS2 of the first light-transmissive member PR1 and the second reflector 350. Additionally, the second light-transmissive member PR2 can have an inclined surface in contact with the second reflector 350. Additionally, the second light-transmissive member PR2 can surround the second reflector 350. Additionally, since a part of the second light-transmissive member PR2 can be in contact with the bottom cover 410, the light guide plate 320, the first reflector 340, the first light-transmissive member PR1, the second reflector 350, and the second light-transmissive member PR2 can be disposed on the bottom cover 410 with increased bonding strength. Additionally, foreign matters and the like can be prevented from being introduced into the second reflector 350 that transmits infrared wavelength light. Therefore, improved sensing sensitivity can be maintained.

[0182] Figure 11 is a view showing the layer structure between the light guide plate and the first light-transmissive member and various layer structures between the first light-transmissive member and the second light-transmissive member.

[0183] Referring toFigure 11 In (a) above, as described above, the first intermediate layer IL1 and the second intermediate layer IL2 may be provided on the inclined surface of the light guide plate. The first intermediate layer IL1 may be a first adhesive member. The second intermediate layer IL2 may be a first reflector. In addition, an adhesive member the same as the first intermediate layer IL1 may also be provided on the second intermediate layer IL2. For example, the first intermediate layer IL1, the second intermediate layer IL2, and the first intermediate layer IL1 may be sequentially located between the inclined surface of the light guide plate and the first light transmissive member PR1.

[0184] In the description Figure 11 of (b) to Figure 11 of (d), prior to that, there may be a plurality of intermediate layers between the first light transmissive member PR1 and the second light transmissive member PR2 in the display device according to the embodiment. Among the plurality of intermediate layers, the layer corresponding to the "adhesive member" may be positioned adjacent to the first light transmissive member PR1 or the second light transmissive member PR2. In addition, one layer among the plurality of intermediate layers may correspond to the second reflector. In addition, another layer among the plurality of intermediate layers may be an absorption layer. In this case, the layer corresponding to the second reflector may be positioned closer to the first light transmissive member PR1 than the layer corresponding to the absorption layer.

[0185] Referring to Figure 11 of (b), the third intermediate layer IL3, the fourth intermediate layer IL4, and the fifth intermediate layer IL5 may be located between the first light transmissive member PR1 and the second light transmissive member PR2. The third intermediate layer IL3 may be in contact with the first light transmissive member PR1. In addition, the fifth intermediate layer IL5 may be in contact with the second light transmissive member PR2.

[0186] The third intermediate layer IL3 may be a second reflector. The fourth intermediate layer IL4 may be an absorption layer. For example, the fourth intermediate layer IL4 may be formed of a material that absorbs light emitted from the second sensor. The fourth intermediate layer IL4 may be a black coating. In addition, the fifth intermediate layer IL5 may be a fifth adhesive member. Therefore, the fifth intermediate layer IL5 may provide an improved bonding strength between the fourth intermediate layer IL4 and the second light transmissive member PR2.

[0187] Referring to Figure 11 of (c), the third intermediate layer IL3', the fourth intermediate layer IL4', and the fifth intermediate layer IL5' may be located between the first light transmissive member PR1 and the second light transmissive member PR2.

[0188] The third intermediate layer IL3' may be a fifth adhesive member. The third intermediate layer IL3' may provide an increased bonding strength between the fourth intermediate layer IL4' and the first light transmissive member PR1.

[0189] The fourth intermediate layer IL4' can be the second reflector. Thus, the light emitted from the second sensor can be reflected by the fourth intermediate layer IL4' and provided to the first reflector.

[0190] In addition, the fifth intermediate layer IL5' can be an absorption layer. For example, the fifth intermediate layer IL5' can be formed of a material that absorbs the light emitted from the second sensor. The fifth intermediate layer IL5' can be a black coating.

[0191] Referring to Figure 11 of (d), the third intermediate layer IL3", the fourth intermediate layer IL4", the fifth intermediate layer IL5", the sixth intermediate layer IL6" and the seventh intermediate layer IL7" can be located between the first light-transmissive member PR1 and the second light-transmissive member PR2.

[0192] The third intermediate layer IL3" and the seventh intermediate layer IL7" can correspond to an adhesive member (for example, the fifth adhesive member). Thus, increased bonding strength can be provided between the fourth intermediate layer IL4" and the first light-transmissive member PR1. In addition, improved bonding force can be provided between the sixth intermediate layer IL6" and the second light-transmissive member PR2.

[0193] The fifth intermediate layer IL5" can be the second reflector. Thus, the light emitted from the second sensor can be reflected by the fifth intermediate layer IL5" and provided to the first reflector.

[0194] The sixth intermediate layer IL6" can include an optical film or the like as a base member. Thus, the sixth intermediate layer IL6" can provide a support force, optical properties, etc.

[0195] The seventh intermediate layer IL7" can be an absorption layer. For example, the seventh intermediate layer IL7" can be formed of a material that absorbs the light emitted from the second sensor. The seventh intermediate layer IL7" can be a black coating.

[0196] Figure 12 is Figure 9 a modified example of and a cross-sectional view along line I-I'. Figure 13 is Figure 9 a modified example of and a cross-sectional view along line II-II'.

[0197] Referring to Figure 12 and Figure 13 , the first substrate SB1 and the second substrate SB2 can be arranged parallel to each other. The first substrate SB1 and the second substrate SB2 can be arranged adjacent to each other in the second direction (Y-axis direction). For example, the first substrate SB1 and the second substrate SB2 can have coplanar upper surfaces. The direction in which the first substrate SB1 and the second substrate SB2 are arranged parallel can be perpendicular to Figure 9 the direction in which the first substrate SB1 and the second substrate SB2 are arranged parallel in

[0198] At least a part of the first sensor CM1 and the second sensor CM2 may overlap in the second direction (in the Y-axis direction). In the present embodiment, the first sensor CM1 and the second sensor CM2 may be arranged in sequence in the second direction (in the Y-axis direction), and the first substrate SB1 and the second substrate SB2 may also be arranged in sequence in the second direction (in the Y-axis direction).

[0199] The first reflector 340 and the second reflector 350 may be inclined with respect to the second direction (Y-axis direction). The first light-transmitting member PR1 may be located between the first reflector 340 and the second reflector 350. In addition, the second light-transmitting member PR2 may be located on the second reflector 350. Therefore, at least a part of the first reflector 340, the first light-transmitting member PR1, and the second reflector 350 (or the second light-transmitting member) may overlap in the second direction. In addition, the first light-receiving unit RX1, the first light-emitting unit TX1, the second light-receiving unit RX2, and the second light-emitting unit TX2 may be arranged in a row along one direction.

[0200] Figure 14 It is a view showing a second display area according to various examples of a display device according to a second embodiment.

[0201] Refer to Figure 14 in (a) of Figure 9 As shown, the first substrate SB1 and the second substrate SB2 may be arranged in parallel such that their long-side surfaces face each other. The first substrate and the second substrate may be arranged adjacent to each other in the first direction (X-axis direction). For example, the first substrate SB1 and the second substrate SB2 may have coplanar upper surfaces.

[0202] At least a part of the first sensor CM1 and the second sensor CM2 may overlap in the first direction. The first sensor CM1 and the second sensor CM2 may be arranged in sequence in the first direction. In addition, the first substrate SB1 and the second substrate SB2 may also be arranged in sequence in the first direction.

[0203] In addition, the display area DA of the display panel 100 may include a first display area DA1 and a second display area DA2. The second display area DA2 may be located above the sensor CM or the first substrate and the second substrate. For example, the second display area DA2 may be an area corresponding to or overlapping with the sensor CM or the first substrate and the second substrate.

[0204] In addition, corresponding to the structures of the first substrate and the second substrate (or the first sensor and the second sensor), the second display area DA2 may have a length a and a width b. The length may be the distance extending in the second direction. The length a and the width b of the second display area DA2 may be the same or substantially the same. Alternatively, the length a and the width b of the second display area DA2 may have a size difference of less than 20%.

[0205] Referring to Figure 14 (b) of Figure 12 As described above, the first substrate SB1 and the second substrate SB2 may be arranged in parallel such that their short side surfaces face each other. The first substrate SB1 and the second substrate SB2 may be arranged adjacent to each other in the second direction (in the Y-axis direction). In addition, the first substrate SB1 and the second substrate SB2 may have coplanar upper surfaces.

[0206] At least a portion of the first sensor CM1 and the second sensor CM2 may overlap in the second direction (in the Y-axis direction). The first sensor CM1 and the second sensor CM2 may be arranged in sequence along the second direction (Y-axis direction). In addition, the first substrate SB1 and the second substrate SB2 may also be arranged in sequence along the second direction (Y-axis direction).

[0207] In addition, the display area DA of the display panel 100 may include a first display area DA1 and a second display area DA2. The second display area DA2 may be provided above the sensor CM, or may be located above the first substrate and the second substrate. For example, the second display area DA2 may correspond to the sensor CM, or may be an area corresponding to or overlapping with the first substrate and the second substrate.

[0208] In addition, corresponding to the structures of the first substrate and the second substrate (or the first sensor and the second sensor), the second display area DA2 may have a length c and a width d. The length may be the distance extending in the second direction. The length c and the width d of the second display area DA2 may be different. The length c of the second display area DA2 may be greater than the width d. For example, in the second display area DA2, the length c may be 1.5 times or more of the width d.

[0209] In this way, the size and structure of the second display area DA2 may vary according to the positions of the first sensor and the second sensor (or the first substrate and the second substrate). Therefore, the structure of the second display area DA2 may be freely changed in design corresponding to the structure of the display device and the like.

[0210] Figure 15 is a first usage example of the first sensor and the second sensor in the display device according to the embodiment, Figure 16 is Figure 15 a side view ofFigure 17 is Figure 15 a plan view of, and Figure 18 is a view for describing the effect of a first usage example of a first sensor and a second sensor in a display device according to an embodiment.

[0211] Referring to Figures 15 to 18 , as described above, the display device may include a substrate SB provided with a first sensor CM1 and a second sensor CM2. The first substrate SB1 and the second substrate SB2 of the substrate SB may be configured in a separated, connected, or coupled structure.

[0212] The first sensor CM1 may be provided on the first substrate SB1. The second sensor CM2 may be provided on the second substrate SB2. In addition, the first substrate SB1 and the second substrate SB2 may be arranged to cross each other. The second substrate SB2 may be arranged at a predetermined angle with respect to the first substrate SB1. In addition, the upper surface of the second substrate SB2 may not be parallel to the upper surface of the first substrate SB1. For example, the second substrate SB2 may be arranged perpendicular to the first substrate SB1.

[0213] The first light emitting unit Tx1 of the first sensor CM1 and the second light emitting unit Tx2 of the second sensor CM2 may be misaligned in a first direction (X-axis direction). In addition, the first light receiving unit RX1 of the first sensor CM1 may be misaligned with the second light receiving unit Rx2 of the second sensor CM2 in the first direction.

[0214] For example, the second light emitting unit Tx2 of the second sensor CM2 may be plural. For example, the second light emitting unit Tx2 may include a 2-1 light emitting unit Tx2a and a 2-2 light emitting unit Tx2b. The second light receiving unit Rx2 may be located between the 2-1 light emitting unit Tx2a and the 2-2 light emitting unit Tx2b.

[0215] The 2-1 light emitting unit Tx2a and the 2-2 light emitting unit Tx2b may overlap the second light receiving unit Rx2 in a second direction (Y-axis direction). In addition, the first light receiving unit RX1 of the first sensor CM1 may be positioned corresponding to any one of the plural second light emitting units Tx2.

[0216] The light-emitting units Tx2a of 2-1 and Tx2b of 2-2 can emit light. The light emitted from the light-emitting units Tx2a of 2-1 and Tx2b of 2-2 can be reflected from the first reflector to the second display area or the display panel. In this case, since the second light-receiving unit Rx2 can be located between the light-emitting unit Tx2a of 2-1 and the light-emitting unit Tx2b of 2-2, the light that cannot be emitted to the upper display panel due to the arrangement of the second light-receiving unit Rx2 can be compensated. That is, the generation of a dark area or the deterioration of light uniformity due to the second light-receiving unit Rx2 in the second display area can be improved.

[0217] Figure 19 is a second usage example of the first sensor and the second sensor in the display device according to the embodiment, Figure 20 is Figure 19 a side view of, and Figure 21 is Figure 19 a plan view of.

[0218] Referring to Figures 19 to 21 , similarly, the display device may include a substrate SB provided with a first sensor CM1 and a second sensor CM2. The first substrate SB1 and the second substrate SB2 of the substrate SB may be configured in a separated, connected, or coupled structure. In addition, the first sensor CM1 may be provided on the first substrate SB1. The second sensor CM2 may be provided on the second substrate SB2. In addition, the first substrate SB1 and the second substrate SB2 may be arranged to cross each other. The second substrate SB2 may be arranged at a predetermined angle with respect to the first substrate SB1. In addition, the upper surface of the second substrate SB2 may not be parallel to the upper surface of the first substrate SB1. For example, the second substrate SB2 may be arranged perpendicular to the first substrate SB1.

[0219] The first light-emitting unit Tx1 of the first sensor CM1 and the second light-emitting unit Tx2 of the second sensor CM2 may be misaligned in the first direction (X-axis direction). In addition, the first light-receiving unit Rx1 of the first sensor CM1 may be misaligned with the second light-receiving unit Rx2 of the second sensor CM2 in the first direction (X-axis direction).

[0220] In addition, there may be a plurality of second light-emitting units Tx2 of the second sensor CM2. For example, the second light-emitting units Tx2 may include a 2-1 light-emitting unit Tx2a, a 2-2 light-emitting unit Tx2b, and a 2-3 light-emitting unit Tx2c. The second light-receiving unit Rx2 may be arranged to be spaced apart from the 2-1 light-emitting unit Tx2a, the 2-2 light-emitting unit Tx2b, and the 2-3 light-emitting unit Tx2c. For example, the second light-receiving unit Rx2 may be arranged to be spaced apart from the 2-1 light-emitting unit Tx2a, the 2-2 light-emitting unit Tx2b, and the 2-3 light-emitting unit Tx2c in the stacking direction (Z-axis direction).

[0221] The 2-1 light-emitting unit Tx2a, the 2-2 light-emitting unit Tx2b, and the 2-3 light-emitting unit Tx2c may overlap in the second direction (Y-axis direction). In addition, the 2-1 light-emitting unit Tx2a, the 2-2 light-emitting unit Tx2b, and the 2-3 light-emitting unit Tx2c may not overlap with the second light-receiving unit Rx2 in the second direction (Y-axis direction). That is, the 2-1 light-emitting unit Tx2a, the 2-2 light-emitting unit Tx2b, and the 2-3 light-emitting unit Tx2c may be positioned so as not to be aligned with the second light-receiving unit Rx2 in the second direction (Y-axis direction).

[0222] In addition, at least one of the plurality of second light-emitting units Tx2 may overlap with the second light-receiving unit Rx2 in the stacking direction (Z-axis direction). In addition, the plurality of second light-emitting units Tx2 may be symmetrically positioned with respect to the second light-receiving unit Rx2. For example, the 2-2 light-emitting unit Tx2b may be located between the 2-1 light-emitting unit Tx2a and the 2-3 light-emitting unit Tx2c. In addition, the 2-2 light-emitting unit Tx2b may overlap with the second light-receiving unit Rx2. With this configuration, it is possible to easily reduce the dark region of the second display region above the sensor CM, and it is possible to improve the light uniformity in the first display region and the second display region or the second display region.

[0223] The second light-emitting unit Tx2 may be surrounded by a resin layer RL. The resin layer RL may be formed of a light-transmitting material. In addition, the resin layer RL may improve optical performance and the like. In addition, in addition to the light source, the second light-emitting unit Tx2 may further include an optical element OPT having a plurality of reflection patterns. For example, the 2-1 light-emitting unit Tx2a may include a first optical element RT3 provided in the light emission direction. The 2-2 light-emitting unit Tx2b may include a second optical element RT2 provided in the light emission direction. In addition, the 2-3 light-emitting unit Tx2c may include a third optical element RT1 provided in the light emission direction.

[0224] In addition, the light emitted from the second light-emitting unit Tx2 can be reflected by the optical element OPT. Additionally, the emission direction of the light can be controlled by the pattern structure. For example, the light emitted from the second light-emitting unit Tx2 can be implemented as a surface light source. Therefore, the dark area of the second display region can be reduced based on a surface rather than a point. For example, each of the plurality of second light-emitting units Tx2 can have an optical element.

[0225] Figure 22 is Figure 15 a modified example of Figure 23 is Figure 22 a side view of Figure 24 is Figure 22 a plan view of

[0226] Referring to Figures 22 to 24 in the display device, the first substrate SB1 and the second substrate SB2 of the substrate SB can be configured in a separated, connected, or coupled structure. Additionally, the first sensor CM1 can be disposed on the first substrate SB1. The second sensor CM2 can be disposed on the second substrate SB2. Additionally, the first substrate SB1 and the second substrate SB2 can be disposed to cross each other. The second substrate SB2 can be disposed at a predetermined angle with respect to the first substrate SB1. Additionally, the first light-emitting unit Tx1 of the first sensor CM1 and the second light-emitting unit Tx2 of the second sensor CM2 can be misaligned in the first direction (X-axis direction).

[0227] There can be a plurality of second light-emitting units Tx2 of the second sensor CM2. For example, the second light-emitting unit Tx2 can include a 2-1 light-emitting unit Tx2a and a 2-2 light-emitting unit Tx2b. The second light-receiving unit Rx2 can be located between the 2-1 light-emitting unit Tx2a and the 2-2 light-emitting unit Tx2b. The 2-1 light-emitting unit Tx2a and the 2-2 light-emitting unit Tx2b can overlap in the second direction. Additionally, the first light-receiving unit Rx1 of the first sensor CM1 can be positioned corresponding to any one of the plurality of second light-emitting units Tx2.

[0228] The 2-1 light-emitting unit Tx2a and the 2-2 light-emitting unit Tx2b can emit light toward the guiding layer GL. That is, the 2-1 light-emitting unit Tx2a can emit light toward the 2-2 light-emitting unit Tx2b, and the 2-2 light-emitting unit Tx2b can emit light toward the 2-1 light-emitting unit Tx2a.

[0229] The second light-emitting unit Tx2 may be surrounded by a guiding layer GL. The guiding layer GL may guide the light emitted from the second light-emitting unit Tx2. Additionally, a reflecting member RM may be located in the guiding layer GL. The light emitted from the second light-emitting unit Tx2 may be uniformly guided toward the first reflector through the reflecting member RM. Additionally, the emission path of the light emitted from the second light-emitting unit Tx2 may be controlled by the reflecting member RM.

[0230] Figure 25 Various examples of the pixel structure of a display panel in a display device according to an embodiment are shown.

[0231] In a display device according to an embodiment, a display area of the display panel 100 may include a first display area DA1 and a second display area DA2. A plurality of first pixels PX1 in the first display area DA1 may emit light and may display an image through the emitted light. Additionally, a plurality of second pixels PX2 in the second display area DA2 may also emit light and may display an image. In this way, the second pixels PX2 may be disposed in the second display area DA2 above the sensor, so that full-screen display may be achieved. In this case, the opening areas of the first pixels PX1 and the second pixels PX2 may be the same or different.

[0232] Referring to Figure 25 in (a), the opening areas of the first pixels PX1 and the second pixels PX2 may be the same or substantially the same. That is, the first display area DA1 and the second display area DA2 may have a symmetric structure. Therefore, the display panel may be easily manufactured.

[0233] Alternatively, referring to Figure 25 in (b) and Figure 25 in (c), the opening areas of the first pixels PX1 and the second pixels PX2 may be different. That is, the opening areas of the first pixels PX1 and the second pixels PX2 may be different. For example, the opening area of red light (or green light, blue light) emitted from the first pixel PX1 may be smaller than the opening area of red light (or green light, blue light) emitted from the second pixel PX2.

[0234] The shape of the opening area of a sub-pixel (R, G, or B) in each pixel may vary. For example, the opening area of the sub-pixel may be a quadrilateral, a circle, etc. Therefore, the opening area of the sub-pixel in the first pixel PX1 may be different from the opening area of the sub-pixel in the second pixel PX2, and the shape of the opening area of the sub-pixel in the first pixel PX1 may be different from the shape of the opening area of the sub-pixel in the second pixel PX2.

[0235] As a result, as described below, by changing the area, shape, etc. of the opening area, the lower transmittance in the second display area may be easily solved.

[0236] Figure 26 illustrates various examples of a display panel and a polarizing plate in a display device according to various experimental examples, and Figure 27 illustrates a captured image according to Figure 26 .

[0237] Figure 26 from (a) to Figure 26 of (c) are cross-sectional views of a second display area during a transmittance experiment. Referring to Figure 26 from (a) to Figure 26 of (c), in the display panel 100 according to an embodiment, signal lines and pixels may be provided on the upper surface of the lower substrate. Liquid crystals in the liquid crystal layer 130 may be driven by an electric field generated by a voltage difference between a data voltage supplied to a pixel electrode and a common voltage supplied to a common electrode. The amount of light transmitted from the backlight unit may be adjusted by driving the liquid crystals.

[0238] The upper polarizing plate 142 may be located on the upper substrate of the display panel 100. In addition, the lower polarizing plate 141 may be located on the lower substrate of the display panel 100. The transmission axis of the upper polarizing plate 142 may intersect or be orthogonal to the transmission axis of the lower polarizing plate 141.

[0239] In Experimental Example 1, as shown in Figure 26 of (a), in the display panel, both the upper polarizing plate 142 and the lower polarizing plate 141 may be provided above and below the display panel 100. In Experimental Example 2, as shown in Figure 26 of (b), in the display panel, both the upper polarizing plate and the lower polarizing plate may be removed. In Experimental Example 3, as shown in Figure 26 of (c), in the display panel, the lower polarizing plate may be removed and the upper polarizing plate may be present.

[0240] Figure 27 of (d) may be an original image. In addition, Figure 27 the image in (a) is an image captured by a second sensor through Figure 26 of (a) in Experimental Example 1. Figure 27 of (b) is an image captured through Figure 26 of (b) in Experimental Example 2. Figure 27 of (c) is an image captured by a second sensor through Figure 26 of (c) in Experimental Example 3.

[0241] As a result of the experiment, the transmittance is 6.85% in the case of Figure 26 of (a), the transmittance is 5.7% in the case of Figure 26 of (c), and in Figure 26In the case of (b), the transmittance is 15.7%. In this way, it can be seen that by arranging the upper polarizing plate 142 and the lower polarizing plate 140 above / below the second display area, due to the reduction in the transmittance of the light passing through the second display area and the high haze level, the image quality deteriorates or decreases.

[0242] As a modification example, the non-opening areas of the display panel rather than the opening areas can be concentrated on one side. For example, non-opening areas such as data lines and gate lines can be concentrated at one edge of a pixel. Therefore, the width or area of the non-opening areas between adjacent pixels can be reduced. As a result, the gap between adjacent pixels can be reduced, thereby increasing the transmittance of the entire display area. That is, when the pixels are bisected in the horizontal and vertical directions, most (e.g., 70% or more) of the non-opening areas can exist in one quadrant. The concentrated structure of the non-opening areas can be applied only to the second display area. Therefore, the aperture ratio of the second display area can be higher than that of the first display area. As a result, more accurate sensing or imaging can be achieved by increasing the transmittance in the second display area.

[0243] Figure 28 is a view showing various pixel structures with different aperture ratios in the second display area of a display device, Figure 29 is a cross-sectional view of a display device including pixels with different aperture ratios according to an embodiment, and Figure 30 is according to Figure 28 the video image.

[0244] In Figure 28 which, Figure 28 (a) of Figure 28 shows the pixel structure of Experimental Example 1, Figure 28 and (b) of Figure 30 shows the pixel structure of Experimental Example 2, and Figure 28 (c) of Figure 30 shows the pixel structure of Experimental Example 3. In addition, Figure 28 (a) of Figure 30 is the video image result of Figure 28 (a) of

[0245] First, refer to Figure 29, in order to reduce the deterioration of the light transmittance and the high haze level in the above-mentioned second display area, the second pixels in the display panel of the display device according to the embodiment may include 2-1 pixels and 2-2 pixels having different areas. Here, the 2-1 pixels may be sub-pixels of at least one color among red (R), green (G), and blue (B). In addition, the 2-2 pixels may be white sub-pixels. In the experimental example, the area (opening area) of the 2-1 pixels (R, G, B) may correspond to the area that does not overlap with the black matrix on the color filter of the corresponding color. In addition, the area (opening area) of the 2-2 pixels (white, W) may correspond to the area that does not overlap with the black matrix in the absence of color filters such as R, G, and B.

[0246] Specifically, referring to Figure 28 (a) of, in the following Experimental Example 1, the second pixels PX2 in the second display area DA2 may be formed only by the 2-1 pixels PX2 that are one of red (R), green (G), and blue (B). On the other hand, referring to Figure 28 (b) of, in the following Experimental Example 2, the second pixels PX2 in the second display area DA2 may include the 2-1 pixels PX2a that are one of red (R), green (G), or blue (B) and the 2-2 pixels PX2b that are white (W). In this case, the aperture ratio (opening area) of the 2-1 pixels PX2a may be the same as or substantially the same as the aperture ratio (opening area) of the 2-2 pixels PX2b. Referring to Figure 28 (c) of, in the following Experimental Example 3, the second pixels PX2' in the second display area DA2 may include the 2-1 pixels PX2a' that are one of red (R), green (G), or blue (B) and the 2-2 pixels PX2b' that are white (W). Experimental Example 3 is the same as or substantially the same as Experimental Example 2, but the aperture ratio (opening area) of the 2-1 pixels PX2a' may be smaller than the aperture ratio (opening area) of the 2-2 pixels PX2b'.

[0247] Table 1 shows the experimental results of the specifications and transmittance for the Figure 28 structure and reference examples.

[0248] [Table 1]

[0249]

[0250] Referring to Table 1 and Figure 30, when comparing the reference example with Experimental Example 1, it can be seen that by increasing the transmittance of the upper polarizing layer and the lower polarizing layer and reducing the haze level, the transmittance in the second display area of the display panel increases. Additionally, when comparing Experimental Example 2 with Experimental Example 1 (or the reference example), it can be seen that since the second display area includes both 2-1 pixels and 2-2 pixels, the transmittance in the second display area of the display panel increases.

[0251] Furthermore, when comparing Experimental Example 3 with Experimental Example 1 (Experimental Example 2 and the reference example), it can be seen that when the second display area includes both 2-1 pixels and 2-2 pixels and the aperture ratio (aperture area) of the 2-2 pixels is greater than the aperture ratio (aperture area) of the 2-1 pixels, the transmittance in the second display area of the display panel further increases.

[0252] Therefore, in order to increase the transmittance, the upper polarizing plate and the lower polarizing plate that overlap with the second display area in the display device according to the embodiment can be removed. Additionally, a polarizing plate with a reduced haze level or an increased transmittance can be provided. Additionally, as Figure 29 shown, the area (aperture area W1) of the 2-2 pixels (W) in the display panel can be greater than or equal to the area (aperture area W2) of the 2-1 pixels (R, G, B). Additionally, in order to further increase the transmittance, the area (aperture area W1) of the 2-2 pixels (W) in the display panel can be greater than the area (aperture area W2) of the 2-1 pixels (R, G, B).

[0253] According to the embodiment, the imaging area cannot be recognized from the outside, the dark area phenomenon in the area where the sensor is provided can be improved, and the light uniformity can be improved. Additionally, low-power operation is possible.

[0254] Furthermore, miniaturization with a narrow border and a reduced thickness can be achieved.

[0255] Additionally, the embodiment can provide a display device with an increased transmittance.

[0256] Although the embodiments of the present disclosure have been described in more detail with reference to the accompanying drawings, the present disclosure is not necessarily limited to these embodiments, and various modifications can be made without departing from the technical concept of the present disclosure. Therefore, the embodiments disclosed in the present disclosure are not intended to limit the technical concept of the present disclosure, but are intended to describe the technical concept of the present disclosure, and the scope of the technical concept of the present disclosure is not limited by these embodiments. Therefore, it should be understood that the above embodiments are illustrative in all aspects and not restrictive. The scope of the present disclosure should be interpreted according to the appended claims, and all technical concepts within the equivalent scope should be interpreted as being included within the scope of the present disclosure.

[0257] The various beneficial advantages and effects of the present disclosure are not limited to the above, and will be more easily understood during the process of describing the specific embodiments of the present disclosure.

[0258] Cross - reference to related applications

[0259] This application claims the priority and benefit of Korean Patent Application No. 10 - 2023 - 0197874, filed in Korea on December 29, 2023, the disclosure of which is incorporated herein by reference in its entirety.

Claims

1. A display device, comprising: Backlight unit; A display panel, the display panel is disposed on the backlight unit and includes a first display area and a second display area; as well as a first sensor and a second sensor, wherein the first sensor and the second sensor are arranged below the display panel; Wherein, the backlight unit comprises: a light guide plate, the light guide plate comprising a first light guide portion disposed below the first display area and a second light guide portion disposed below the second display area; a light source configured to radiate light toward the light guide plate; and a first reflector, the first reflector being disposed on the second light guide portion, and The first reflector transmits light emitted from the first sensor and reflects light emitted from the second sensor.

2. The display device according to claim 1, wherein: Light emitted from the first sensor is emitted to the outside by passing through the display panel, is reflected from an external object, and is received by the first sensor.

3. The display device according to claim 1, wherein: The light source is disposed at one side of the light guide plate, and the light guide plate includes an inclined surface disposed at another side of the light guide plate opposite to the one side of the light guide plate, and Wherein, the first reflector is arranged on the inclined surface of the light guide plate.

4. The display device according to claim 3, wherein: The inclined surface does not overlap with an upper surface of the light guide plate.

5. The display device according to claim 3, wherein: The thickness of the light guide plate decreases toward the other side along the inclined surface. 6 . The display device according to claim 3 , further comprising a first light-transmitting member disposed between the inclined surface of the light guide plate and the display panel.

7. The display device according to claim 6, wherein: The first light-transmitting member is disposed between a second light-emitting unit of the second sensor and the first reflector.

8. The display device according to claim 3, wherein: The first sensor includes a first light emitting unit and an infrared camera, and the second sensor includes a second light emitting unit and an RGB camera.

9. The display device according to claim 8, further comprising: a first substrate, the first sensor being disposed on the first substrate; as well as A second substrate, on which the second sensor is disposed.

10. The display device according to claim 9, wherein: The first substrate and the second substrate are disposed to cross each other.

11. The display device according to claim 10, wherein: The second light emitting unit is adjacent to the infrared camera, and the first light emitting unit is adjacent to the RGB camera.

12. The display device according to claim 10, wherein: The first sensor and the second sensor emit light in intersecting directions.

13. The display device according to claim 9, wherein: The first substrate and the second substrate are disposed parallel to each other, and the first substrate and the second substrate are adjacent to each other in a first direction toward a side portion or in a second direction perpendicular to the first direction.

14. The display device according to claim 13, wherein: The first sensor and the second sensor at least partially overlap in the first direction.

15. The display device according to claim 13, further comprising: a first light-transmitting member disposed between the inclined surface of the light guide plate and the display panel; as well as a second reflector disposed on an inclined surface of the first light-transmitting member, The second reflector reflects the light emitted from the second sensor to the display panel.

16. The display device according to claim 15, further comprising a second light-transmitting member provided on the inclined surface of the first light-transmitting member, in, The second reflector is disposed between the second light-transmitting member and the first light-transmitting member.

17. The display device according to claim 1, wherein: The opening area of ​​the first pixel in the first display area and the opening area of ​​the second pixel in the second display area have different areas.

18. The display device according to claim 1, wherein: The second pixels in the second display area include a 2-1 pixel that outputs red light, green light, and blue light, and a 2-2 pixel that outputs white light.

19. The display device according to claim 18, wherein: The area of ​​the 2-1 pixel is smaller than the area of ​​the 2-2 pixel.

20. The display device according to claim 1, further comprising an optical sheet disposed on the backlight unit, in, The optical sheet includes an opening corresponding to the second display area.

Images