Display device

Abstract

A display device is provided. The display device includes: a pair of glasses corresponding to a display area of a lens; a display panel configured to emit display light; a reflecting member configured to reflect the display light emitted from the display panel in a direction of the glasses; and a light source unit configured to emit near-infrared light for tracking an eye of a user, in which the display panel includes a plurality of pixel groups arranged in a matrix configuration, the plurality of pixel groups each including a red pixel, a green pixel, a blue pixel, and a sensor pixel, the sensor pixel includes a photodiode configured to sense near-infrared light reflected by an eye of a user, one of the plurality of pixel groups including 2 * 2 sub-regions, and any one of a red pixel, a green pixel, and a composite pixel in which a blue pixel and a sensor pixel are arranged adjacent to each other is located in each of the 2 * 2 sub-regions.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2023-0024413 filed in the Korean Intellectual Property Office on February 23, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] Aspects of some embodiments of the present disclosure relate to a display device. Background Art

[0004] Wearable devices in the form of glasses or helmets have been developed so that the focus is formed at a distance close to the user's eyes. For example, the wearable device can be a head-mounted display (HMD) device or AR glasses. The wearable device can provide augmented reality (AR) images or virtual reality (VR) images to the user.

[0005] Wearable devices such as HMD devices or AR glasses may desirably have a display specification of a minimum of 2000 PPI (pixels per inch) to allow users to use the wearable device for a long time without dizziness. To this end, silicon-based organic light-emitting diode (OLEDoS) technology related to high-resolution compact organic light-emitting display devices has emerged. OLEDoS technology is a technology for arranging an organic light-emitting diode (OLED) on a semiconductor wafer substrate on which a complementary metal oxide semiconductor (CMOS) is located.

[0006] The wearable device can track the movement of the user's eyes when displaying an AR or VR screen and change the resolution of the screen based on the tracked movement of the user's eyes. For example, the wearable device can detect the direction of the user's gaze and determine the central visual area corresponding to the gaze and the peripheral visual area other than the central visual area. The foveation rendering technology for displaying a high-resolution screen in the central visual area and a low-resolution screen in the peripheral visual area can be applied to the wearable device. The wearable device can irradiate the user's eyes with near-infrared light having an output wavelength of about 780 nanometers (nm) to about 1400nm so as to track the movement of the user's eyes, and can detect the near-infrared light reflected from the user's eyes.

[0007] The above information disclosed in this Background section is only for enhancement of understanding of the background technology, and therefore, the information discussed in this Background section does not necessarily constitute prior art. Utility Model Content

[0008] Aspects of the present disclosure provide a display device that can prevent picture quality from being deteriorated due to sensor pixels for sensing reflected light for an eye tracking function.

[0009] The features of the embodiments of the present disclosure are not limited to those mentioned above, and additional objects of the present disclosure not mentioned herein will be clearly understood by those skilled in the art from the following description of the present disclosure.

[0010] According to some embodiments of the present disclosure, a display device may include: glasses corresponding to a display area of ​​a lens; a display panel configured to emit display light; a reflective member configured to reflect the display light emitted from the display panel in the direction of the glasses; and a light source unit configured to emit near-infrared light for tracking the user's eyes. The display panel may include a plurality of pixel groups arranged in a matrix configuration. Each of the plurality of pixel groups may include red pixels, green pixels, blue pixels, and sensor pixels, the sensor pixels including photodiodes configured to sense near-infrared light reflected by the user's eyes. One of the plurality of pixel groups may include 2×2 sub-areas, and any one of the red pixel, the green pixel, and the composite pixel may be in each of the 2×2 sub-areas, in which the blue pixel and the sensor pixel are arranged adjacent to each other.

[0011] According to some embodiments, the red pixel and the green pixel may have the same area, and each of the red pixel and the green pixel may have a horizontal to vertical ratio of 1:1, and each of the blue pixel and the sensor pixel may have a horizontal to vertical ratio of 1 / 2:2.

[0012] According to some embodiments, among the 2×2 sub-areas, blue pixels in a first row and blue pixels in a second row may be adjacent to each other, and sensor pixels in the first row and sensor pixels in the second row may be adjacent to each other.

[0013] According to some embodiments, among the 2×2 sub-areas, blue pixels in a first row and sensor pixels in a second row may be adjacent to each other, and sensor pixels in the first row and blue pixels in the second row may be adjacent to each other.

[0014] According to some embodiments, among the 2×2 sub-regions, the composite pixel in which the blue pixel and the sensor pixel are arranged adjacent to each other may be in the first row and the first column, and the blue pixel and the sensor pixel may be adjacent to each other in a diagonal direction.

[0015] According to some embodiments, the sensor pixels may be positioned at the corners of the pixel group, and the blue pixel may be in the second row and second column among the 2×2 sub-regions.

[0016] According to some embodiments, the blue pixel may be positioned at a corner of the pixel group, and the sensor pixel may be in the second row and second column among the 2×2 sub-regions.

[0017] According to some embodiments of the present disclosure, a display device may include: glasses corresponding to a display area of ​​a lens; a display panel configured to emit display light; a reflective member configured to reflect the display light emitted from the display panel in the direction of the glasses; and a light source unit configured to emit near-infrared light for tracking the user's eyes. The display panel may include a plurality of pixel groups arranged in a matrix configuration. Each of the plurality of pixel groups may include red pixels, green pixels, blue pixels, and sensor pixels, the sensor pixels including photodiodes configured to sense near-infrared light reflected by the user's eyes. One of the plurality of pixel groups may include 4×4 sub-areas, and any one of the red pixels, green pixels, blue pixels, and sensor pixels may be in each of the 4×4 sub-areas.

[0018] According to some embodiments, the sensor pixel may be in a subregion located at any one corner of the 4×4 subregions, and any one of the red pixel, the green pixel, and the blue pixel may be in other subregions except the subregion located at any one corner.

[0019] According to some embodiments, among the 4×4 sub-areas, red pixels and green pixels may be in the first and third columns, in which they may be arranged alternately, and blue pixels may be in a portion of the fourth column excluding sensor pixels and in the second column.

[0020] According to some embodiments, the plurality of pixel groups include a first pixel group and a second pixel group, and the first pixel group and the second pixel group may be arranged according to a specified rule, and among the 4×4 sub-regions of the first pixel group, red pixels and green pixels may be alternately arranged in the first column and the third column, blue pixels may be in a portion of the fourth column except for the sensor pixels and in the second column, and the sensor pixels may be in the first row and the fourth column, and among the 4×4 sub-regions of the second pixel group, red pixels and green pixels may be alternately arranged in the first column and the third column, blue pixels may be in a portion of the fourth column except for the sensor pixels and in the second column, and the sensor pixels may be in the fourth row and the fourth column.

[0021] According to some embodiments, in the display panel, a resolution of the first pixel group and a resolution of the second pixel group may be identical to each other.

[0022] According to some embodiments, the plurality of pixel groups include a first pixel group and a second pixel group, and the first pixel group and the second pixel group can be arranged according to a specified rule, among the 4×4 sub-regions of the first pixel group, composite pixels in which blue pixels and sensor pixels are arranged adjacent to each other in a diagonal direction can be in four sub-regions adjacent to the center of the first pixel group, and the second pixel group does not include sensor pixels.

[0023] According to some embodiments, among the 4×4 sub-regions of the first pixel group, the composite pixels may be in the second row and second column, the second row and third column, the third row and second column, and the third row and third column, and the blue pixels and the sensor pixels may be arranged so that the composite pixels may be symmetrical based on the center of the first pixel group.

[0024] According to some embodiments, the sensor pixels in the first pixel group may be closer to the center of the first pixel group than the blue pixels, so that a combination of adjacent sensor pixels has a diamond shape as a whole.

[0025] According to some embodiments, in the display panel, a resolution of the first pixel group and a resolution of the second pixel group may be identical to each other.

[0026] According to some embodiments, the first pixel groups and the second pixel groups may be alternately arranged.

[0027] According to some embodiments, the first pixel group may surround the outside of the display panel, and the second pixel group may be inside the display panel.

[0028] According to some embodiments, the first pixel group may be only in four corner regions of the display panel, and the second pixel group may be in other regions except the four corner regions.

[0029] According to some embodiments, a display panel may include a semiconductor wafer substrate and an OLED on the semiconductor wafer substrate.

[0030] According to some embodiments, a display device according to an embodiment may optimize the arrangement of sensor pixels for sensing reflected light for an eye tracking function, thereby preventing or reducing picture quality degradation due to the sensor pixels.

[0031] The characteristics of the embodiments of the present disclosure are not limited to those mentioned above, and more various effects are included in the following description of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and other characteristics and features according to some embodiments of the present disclosure will become more apparent by describing aspects of some embodiments of the present disclosure in more detail with reference to the accompanying drawings, in which:

[0033] Figure 1 is a front view illustrating a wearable device including a display device according to some embodiments;

[0034] Figure 2 is a diagram illustrating a method according to some embodiments Figure 1 A rear view of the wearable device shown in;

[0035] Figure 3 is a view illustrating another example of a wearable device including a display device according to some embodiments;

[0036] Figure 4 is a schematic block diagram illustrating a display device according to some embodiments;

[0037] Figure 5 is a schematic diagram illustrating a display module according to some embodiments;

[0038] Figure 6 is a plan view illustrating a display panel according to some embodiments;

[0039] Figure 7 is a cross-sectional view illustrating a light emitting area of ​​a display panel according to some embodiments;

[0040] Figure 8 is a cross-sectional view illustrating a sensor pixel of a display panel according to some embodiments;

[0041] Fig. 9 is a plan view illustrating an arrangement of sensor pixels included in a pixel group according to some embodiments;

[0042] Fig.10 is a plan view illustrating an arrangement of sensor pixels included in a pixel group according to some embodiments;

[0043] Fig.11 is a plan view illustrating an arrangement of sensor pixels included in a pixel group according to some embodiments;

[0044] Fig.12 is a plan view illustrating an arrangement of sensor pixels included in a pixel group according to some embodiments;

[0045] Fig.13 is a plan view illustrating an arrangement of sensor pixels included in a pixel group according to some embodiments;

[0046] Fig.14 is a plan view illustrating an arrangement of sensor pixels included in a pixel group according to some embodiments;

[0047] Fig.15is a plan view illustrating an arrangement of sensor pixels included in a pixel group according to some embodiments;

[0048] Fig.16 is a plan view illustrating an arrangement of sensor pixels included in a pixel group according to some embodiments;

[0049] Fig.17 is a plan view illustrating an arrangement of sensor pixels included in a pixel group according to some embodiments; and

[0050] Fig.18 is a plan view illustrating an arrangement of sensor pixels included in a pixel group according to some embodiments. DETAILED DESCRIPTION

[0051] Aspects of some embodiments of the present disclosure will now be more fully described below with reference to the accompanying drawings in which aspects of some embodiments of the present disclosure are shown. However, the present disclosure can be embodied in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure will be detailed and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0052] It will also be understood that when a layer or substrate is referred to as being “on” another layer or substrate, it can be directly on the other layer or substrate, or intervening layers or substrates may also be present. Throughout the specification, the same reference numerals refer to the same components.

[0053] It will be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first element discussed below can be referred to as the second element without departing from the teachings of the present disclosure. Similarly, the second element can also be referred to as the first element.

[0054] The multiple features of each of the various embodiments of the present disclosure may be partially or completely combined with each other and may technically interact with each other in various ways, and the various embodiments may be implemented independently of each other or may be implemented together in association with each other.

[0055] Hereinafter, aspects of some embodiments will be described in more detail with reference to the accompanying drawings.

[0056] Figure 1 is a front view illustrating a wearable device 100 including a display device 10 according to some embodiments. Figure 2 is a diagram illustrating a method according to some embodiments Figure 1 A rear view of the wearable device 100 shown in FIG.

[0057] refer to Figure 1 and Figure 2 According to some embodiments, the display device 10 may be a display device included in an HMD device. In the HMD device, the display device 10 may be located inside a main body, and a lens 200 for displaying a picture may be located on a rear surface of the main body. The lens 200 may include a left-eye lens 210 corresponding to the left eye of the user and a right-eye lens 220 corresponding to the right eye of the user. Each of the left-eye lens 210 and the right-eye lens 220 may include glasses for displaying a picture output from the display device 10. Reference will be made later to Figure 5 and Fig. 9 A method for displaying a picture through glasses by the display device 10 is described in more detail.

[0058] Figure 3 is a view illustrating another example of a wearable device 10 including a display device 10 according to some embodiments.

[0059] refer to Figure 3 According to some embodiments, the display device 10 may be a display device included in AR glasses. The AR glasses may have a spectacle lens shape and may include a see-through (or transparent or translucent) lens 200. The see-through lens 200 may include a left-eye lens 210 corresponding to the user's left eye and a right-eye lens 220 corresponding to the user's right eye. Each of the left-eye lens 210 and the right-eye lens 220 may include glasses for displaying a picture output from the display device 10. Reference will be made later to Figure 5 and Fig. 9 A method for displaying a picture through glasses by the display device 10 is described in more detail.

[0060] Figure 4 is a schematic block diagram illustrating a display device 10 according to some embodiments. Figure 5 is a schematic diagram illustrating a display module 410 according to some embodiments. For example, Figure 5 An optical path through which display light output from the display panel 510 of the display device 10 moves is illustrated.

[0061] Figure 4 and Figure 5 The display device 10 shown in FIG. 1 can be applied to Figure 1 and Figure 2 The HMD device shown in Figure 3 The AR glasses shown in .

[0062] refer to Figure 4 and Figure 5According to some embodiments, the display device 10 may include a processor 470, a display module 410, a sensor module 420, glasses 430, a battery 440, a camera 450, and a communication module 460. According to some embodiments, the display device 10 may further include other elements described in the present disclosure. The display device 10 may omit Figure 4 At least some of the elements shown in .

[0063] The processor 470 executes the command language stored in the memory to control the operation of the elements (e.g., display module 410, sensor module 420, battery 440, camera 450, and communication module 460) of the display device 10. The processor 470 may be electrically and / or operably connected to the display module 410, sensor module 420, battery 440, camera 450, and communication module 460. The processor 470 may execute software to control at least one other element (e.g., display module 410, sensor module 420, battery 440, camera 450, and communication module 460) connected to the processor 470. The processor 470 may acquire commands from the elements included in the display device 10, interpret the acquired commands, and process and / or calculate various data according to the interpreted commands.

[0064] The display device 10 may receive data processed by the processor 120 embedded in the external device from an external device (e.g., a smart phone or a tablet personal computer). For example, the display device 10 may shoot an object (e.g., a real object or a user's eyes) through the camera 450, and may transmit the shot image to the external device through the communication module 460. The display device 10 may receive data based on an image shot by the display device 10 from the external device. The external device may generate image data related to augmented reality based on information (e.g., shape, color, or position) of the shot object received from the display device 10, and may transmit the image data to the display device 10. The display device 10 may request additional information based on an image obtained by shooting an object (e.g., a real object or a user's eyes) through the camera 450 from the external device, and may receive the additional information from the external device.

[0065] The display module 410 may include a display panel (eg, Figure 5 510) and a light transmitting member (e.g., a display waveguide 520 and a gaze tracking waveguide 530) for transmitting light emitted from the display panel 510 to a portion of the glasses 430. In the present disclosure, the display panel 510 may refer to a light transmitting member for generating light input to the waveguide (e.g., Figure 5The display panel 510 may be a display panel to which organic light emitting diode on silicon (OLEDoS) technology is applied. For example, the display panel 510 may include an OLED located on a semiconductor wafer substrate, and a complementary metal oxide semiconductor (CMOS) located on the semiconductor wafer substrate.

[0066] The display panel 510 of the display module 410 may emit display light for displaying an augmented reality image (or a virtual reality image) based on the control of the processor 470. For example, the display light emitted from the display panel 510 may be transmitted to the lens ( Figure 2 Lens 200 or Figure 3 The display area of ​​the lens 200 is provided so that the user can see the display light. The display device 10 (e.g., the processor 470) can control the display panel 510 in response to the user's input. The type of the user's input may include button input, touch input, voice input and / or gesture input, and may include various input methods capable of controlling the operation of the display panel 510, without being limited thereto.

[0067] The display device 10 may further include a light source unit to track the movement of the user's eye 500. The light source unit may be configured to emit light different from the display light emitted by the display panel 510. The light source unit may be configured to irradiate near-infrared light having an output wavelength of about 780 nm to about 1400 nm toward the user's eye. The near-infrared light emitted from the light source unit may be reflected from the user's eye 500, and the reflected near-infrared light may be input to the display panel 510. The display panel 510 is an optical sensor for receiving the near-infrared light reflected from the user's eye 500 and tracking the movement of the user's eye 500 by using the received near-infrared light, and may include a gaze tracking sensor (e.g., Figure 6 In this case, the gaze tracking sensor may include a photodiode ( Figure 8 photodiode PD).

[0068] When displaying an AR picture or a VR picture, the display device 10 uses a photodiode ( Figure 8 The display device 10 may use a photodiode PD to track the movement of the user's eyes, and change the resolution of the picture based on the tracked movement of the user's eyes. For example, the display device 10 detects the direction of the user's gaze, and determines a central visual area corresponding to the gaze and a peripheral visual area other than the central visual area. The foveated rendering technology for displaying a high-resolution picture on the central visual area and a low-resolution picture on the peripheral visual area may be applied to the display device 10.

[0069] The glasses 430 may be arranged to align with the lenses of the wearable device ( Figure 2 Lens 200 or Figure 3 For example, the glasses 430 may include a left-eye lens ( Figure 2 The left eye lens 210 or Figure 3 The left eye lens 210) and the right eye lens ( Figure 2 The right eye lens 220 or Figure 3 In each of the right eye lens 220).

[0070] The display module 410 may include a display waveguide 520 and a gaze tracking waveguide 530 .

[0071] The display waveguide (eg, first waveguide) 520 may form an optical path by inducing light so that the display light emitted from the display panel 510 is emitted to the lens ( Figure 2 Lens 200 or Figure 3 For example, the lens ( Figure 2 Lens 200 or Figure 3 The display area of ​​the lens 200) may be an area to which light propagating inside the display waveguide 520 is emitted.

[0072] The display waveguide 520 may include at least one of at least one diffraction element and a reflective element (e.g., a mirror). The display waveguide 520 may induce display light emitted from the display panel 510 to the user's eye 500 by using at least one diffraction element or a reflective element included in the display waveguide 520. For example, the diffraction element may include an input / output grating, and the reflective element may include a total internal reflection (TIR) ​​element. An optical material (e.g., glass) may be processed in the form of a wafer so that the optical material may be used as the display waveguide 520, and the refractive index of the display waveguide 520 may vary from about 1.5 to about 1.9.

[0073] The display waveguide 520 may include a material (eg, glass or plastic) capable of totally reflecting the display light so as to guide the display light to the user's eye 500. The material of the display waveguide 520 may not be limited to the above examples.

[0074] The display waveguide 520 may separate the display light emitted from the display panel 510 according to wavelengths (eg, blue, green, or red) to respectively move to separate paths in the display waveguide 520 .

[0075] The display waveguide 520 may be located in a portion of the glasses 430. For example, the display waveguide 520 may be located on the upper end of the glasses 430 based on a virtual axis in which the center point of the glasses 430 and the center point of the user's eye 500 match each other and a virtual line orthogonal to the virtual axis at the center point of the glasses 430. The region in which the display waveguide 520 is located may not be limited to the above-mentioned region of the glasses 430, and the region in which the display waveguide 520 is located may be located in any one of a plurality of regions of the glasses 430 so that the amount of light reflected in the user's eye 500 is greater than or equal to a reference value.

[0076] The sensor module 420 may include at least one sensor (e.g., a gaze tracking sensor and / or an illumination sensor). The at least one sensor may not be limited to the above examples. For example, the at least one sensor may further include a proximity sensor or a contact sensor capable of sensing whether the user has worn the display device 10. The display device 10 may sense whether the user is wearing the display device 10 through the proximity sensor or the contact sensor. When it is sensed that the user is wearing the display device 10, the display device 10 may be manually and / or automatically paired with another electronic device (e.g., a smart phone).

[0077] The gaze tracking sensor may sense reflected light reflected from the user's eye 500 based on the control of the processor 470. The display device 10 may convert the reflected light sensed by the gaze tracking sensor into an electrical signal. The display device 10 may acquire an eyeball image of the user through the converted electrical signal. The display device 10 may track the user's gaze by using the acquired eyeball image of the user.

[0078] The illuminance sensor can sense the illuminance (or brightness) near the display device 10, the amount of display light emitted from the display panel 510, the brightness near the user's eyes 500, or the amount of reflected light reflected in the user's eyes 500 based on the control of the processor 470.

[0079] The display device 10 may sense the illuminance (or brightness) near the user by using an illuminance sensor. The display device 10 may adjust the amount of light (or brightness) of the display (eg, the display panel 510) based on the sensed illuminance (or brightness).

[0080] The gaze tracking waveguide (e.g., second waveguide) 530 may form an optical path by inducing light so that reflected light reflected from the user's eye 500 is input to the sensor module 420. The gaze tracking waveguide 530 may be used to transfer the reflected light to the gaze tracking sensor. The gaze tracking waveguide 530 may be formed as the same or different element from the display waveguide 520.

[0081] The gaze tracking waveguide 530 may be located in a portion of the glasses 430. For example, based on a virtual axis in which the center point of the glasses 430 and the center point of the user's eye 500 match each other and a virtual line orthogonal to the virtual axis at the center point of the glasses 430, the gaze tracking waveguide 530 may be located on the lower end of the glasses 430. The region in which the gaze tracking waveguide 530 is located may not be limited to the above-mentioned region of the glasses 430, and may be located in any one of a plurality of regions of the glasses 430.

[0082] The battery 440 may supply power to at least one element of the display device 10. The battery 440 may be charged by being connected to an external power source in a wired or wireless manner.

[0083] The camera 450 may capture an image near the display device 10. For example, the camera 450 may capture an image of the user's eyes 500 or capture an image of a real object outside the display device 10.

[0084] The communication module 460 may include a wired interface or a wireless interface. The communication module 460 may support direct communication (eg, wired communication) or indirect communication (eg, wireless communication) between the display device 10 and an external device (eg, a smartphone or a tablet personal computer).

[0085] The communication module 460 may include a wireless communication module (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (e.g., a local area network (LAN) communication module or a power line communication module).

[0086] The wireless communication module can support 5G networks and next-generation communication technologies after 4G networks, such as new air interface (NR) access technology. NR access technology can support high-speed data transmission of high-capacity data (enhanced mobile broadband (eMBB)), minimization of terminal power, massive machine type communication (mMTC) or ultra-reliable low-latency communication (URLLC). The wireless communication module can support, for example, high-frequency bands (e.g., mmWave bands) for achieving high data transmission rates.

[0087] The wireless communication module may include a short-range wireless communication module. The short-range communication may include at least one of wireless fidelity (WiFi), Bluetooth, Bluetooth low energy (BLE), Zigbee, near field communication (NFC), magnetic secure transmission, radio frequency (RF), and body area network (BAN).

[0088] refer to Figure 5 , the display module 410 includes a display panel 510 for outputting display light, a display waveguide 520 and a gaze tracking waveguide 530 , and a projection lens 540 .

[0089] The projection lens 540 may be configured to input light emitted from the display panel 510 into the display waveguide 520 and the gaze tracking waveguide 530. Figure 5 In the embodiment, a portion of the light flux emitted from the display panel 510 is input to the display waveguide 520 and the gaze tracking waveguide 530 through the projection lens 540.

[0090] The display waveguide 520 and the gaze tracking waveguide 530 may have a plate shape. The display waveguide 520 and the gaze tracking waveguide 530 may include a grating that performs a diffraction function in a partial area of ​​the plate, such as a diffractive optical element (DOE) or a holographic optical element (HOE). The period, depth, or refractive index of the grating of the display waveguide 520 and the gaze tracking waveguide 530 may vary based on conditions such as an output image viewing angle or a refractive index of a plate medium. The display waveguide 520 and the gaze tracking waveguide 530 may split the light signal so that a portion of the light signal (i.e., display light) input from the display panel 510 is transferred to the gaze tracking waveguide 530, and another portion of the light signal is output to the outside of the display waveguide 520 and the gaze tracking waveguide 530.

[0091] exist Figure 5 In , diffractive optical elements have been described as examples of the display waveguide 520 and the gaze tracking waveguide 530, but the waveguides may be replaced with reflective optical elements such as beam splitters.

[0092] Figure 6 is a plan view illustrating a display panel 510 according to some embodiments. Figure 7 is a cross-sectional view illustrating a light emitting area of ​​a display panel 510 according to some embodiments. Figure 8 is a cross-sectional view illustrating a sensor pixel SS of a display panel 510 according to some embodiments.

[0093] refer to Figure 6 , the display panel 510 according to some embodiments may include a plurality of pixel groups P. The plurality of pixel groups P may be arranged in a matrix on a plane of the display panel 510. For example, the display panel 510 may include m×n pixel groups P (e.g., unit pixels). In this case, each of m and n may be an integer greater than 1. Throughout the present disclosure, a sign or symbol × represents a multiplication code.

[0094] Each of the plurality of pixel groups P may be divided into i×i sub-regions, and the red pixel SR, the green pixel SG, the blue pixel SB, and the sensor pixel SS may be located one by one in the sub-regions. In this case, i may be an integer greater than 1. For example, one pixel group P includes 2×2 sub-regions, and any one of the red pixel SR, the green pixel SG, the blue pixel SB, and the sensor pixel SS may be located in each of the plurality of sub-regions. The red pixel SR, the green pixel SG, the blue pixel SB, and the sensor pixel SS may have substantially the same area. In addition, each of the red pixel SR, the green pixel SG, the blue pixel SB, and the sensor pixel SS may have a horizontal to vertical ratio of 1 to 1. Regarding Figure 6 In the illustrated embodiment, compared with the comparative example in which one of the red pixel SR, the green pixel SG, and the blue pixel SB and the photodiode PD are located in each of all sub-regions, the sensing performance can be increased and the clarity of the image can be improved. That is, in the comparative example, the dot-type photodiode PD can be located on a portion of each of the red pixel SR, the green pixel SG, and the blue pixel SB, but when the display panel 510 is driven, dot-type stains can be detected on the screen. On the other hand, according to the Figure 6 In the illustrated embodiment, the sensor pixel SS is disposed separately from the red pixel SR, the green pixel SG, and the blue pixel SB for displaying an image, thereby increasing the sensing performance and avoiding dot-type stains to improve the clarity of the image.

[0095] Figure 6 It is illustrated that one pixel group P includes one red pixel SR, one green pixel SG, one blue pixel SB, and one sensor pixel SS, but the arrangement of pixels included in each pixel group P may be variously modified and designed.

[0096] The red pixel SR includes a red color filter CF1 and is configured to emit red light when the red color filter CF1 transmits red light. According to some embodiments, the red pixel SR may be configured such that the emission layer EL directly emits red light, and in this case, the red color filter CF1 may be omitted.

[0097] The green pixel SG includes a green color filter CF2 and is configured to emit green light when the green color filter CF2 transmits green light. According to some embodiments, the green pixel SG may be configured such that the emission layer EL directly emits green light, and in this case, the green color filter CF2 may be omitted.

[0098] The blue pixel SB includes a blue color filter CF3 and is configured to emit blue light when the blue color filter CF3 transmits blue light. According to some embodiments, the blue pixel SB may be configured such that the emission layer EL directly emits blue light, and in this case, the blue color filter CF3 may be omitted.

[0099] The sensor pixel SS includes a photodiode PD, and may sense reflected light reflected from the user's eye 500. The photodiode PD may convert the sensed reflected light into an electrical signal, and supply the converted electrical signal to the sensor module 420.

[0100] refer to Figure 7 , the display panel 510 may include a semiconductor wafer substrate 700, an OLED located on the semiconductor wafer substrate 700, and a red color filter CF1, a green color filter CF2, and a blue color filter CF3 located on the OLED. A thin film encapsulation layer TFE covering the emission layer EL of the OLED may be located between the OLED and the red color filter CF1, the green color filter CF2, and the blue color filter CF3. A cover window COV may be located on the red color filter CF1, the green color filter CF2, and the blue color filter CF3. The cover window COV may be attached to the red color filter CF1, the green color filter CF2, and the blue color filter CF3 by a transparent adhesive member such as an optically clear adhesive (OCA) film.

[0101] The semiconductor wafer substrate 700 may include a base substrate 710 and a transistor TR located on the base substrate 710 .

[0102] The base substrate 710 may be a silicon substrate. The base substrate 710 may be a semiconductor pattern formed on a silicon substrate. For example, the base substrate 710 may be a silicon semiconductor substrate formed by a complementary metal oxide semiconductor (CMOS) process. The base substrate 710 may include any one of a single crystal silicon wafer, a polycrystalline silicon wafer, and / or an amorphous silicon wafer.

[0103] The transistor TR located on the base substrate 710 may include a gate electrode GE, a source electrode SE, and a drain electrode DE. The transistor TR may be configured to independently control a red pixel SR, a green pixel SG, and a blue pixel SB included in each of the plurality of pixel groups P. A connection electrode CM, a conductive line, and a conductive pad electrically connected to the transistor TR may be further located on the base substrate 710. The connection electrode CM, the conductive line, and the conductive pad may include a conductive material, for example, a metal material.

[0104] refer to Figure 8, the sensor pixel SS may include a photodiode PD. The photodiode PD may sense reflected light reflected from the user's eye 500 and convert the sensed reflected light into an electrical signal. The photodiode PD may include a gate electrode GE for controlling the output of the electrical signal and a drain electrode DE for outputting the electrical signal to a readout line RL. The photodiode PD may output an electrical signal corresponding to the sensed reflected light through the drain electrode DE in response to a control signal input to the gate electrode GE. The electrical signal of the photodiode PD may be transmitted to the processor 470 outside the display panel 510 through the readout line RL.

[0105] An OLED including a first electrode E1 , an emission layer EL, and a second electrode E2 may be located on a semiconductor wafer substrate 700 .

[0106] The first electrode E1 may be electrically connected to the transistor TR through the connection electrode CM of the semiconductor wafer substrate 700 and at least one contact hole connected thereto. The first electrode E1 may be an anode electrode of the emission layer EL for driving each of the red pixel SR, the green pixel SG, and the blue pixel SB. The first electrode E1 may be a reflective electrode. For example, the first electrode E1 may reflect light emitted from the emission layer EL toward a downward direction. The first electrode E1 may include a metal material having a high light reflectivity. For example, the first electrode E1 may include any one of Al, Al / Cu, and Al / TiN. Figure 8 As shown in , the first electrode E1 may not be formed in the sensor pixel SS. That is, the sensor pixel SS may not include the first electrode E1.

[0107] The emission layer EL may be located on the first electrode E1. The emission layer EL may include a single layer or a plurality of stacked structures. The emission layer EL may be configured to emit white light. For example, the white light may be light in which blue light, green light, and red light are mixed. Alternatively, the white light may be light in which blue light and yellow light are mixed. Figure 8 As shown in , the emission layer EL may not be formed in the sensor pixel SS. That is, the sensor pixel SS may not include the emission layer EL.

[0108] The second electrode E2 may be located on the emission layer EL. The second electrode E2 may be a common electrode, for example, a cathode electrode. The second electrode E2 may be a transmissive or semi-transmissive reflective electrode. For example, the second electrode E2 may transmit light emitted from the emission layer EL. The second electrode E2 may include a conductive material. For example, the second electrode E2 may include Li, Ca, LiF / Ca, LiF / Al, Al, Mg, BaF, Ba, Ag, Au, Cu, or a compound or mixture thereof having a low work function. Figure 8As shown in , the second electrode E2 may not be formed in the sensor pixel SS. That is, the sensor pixel SS may not include the second electrode E2.

[0109] The thin film encapsulation layer TFE may be located on the OLED. The thin film encapsulation layer TFE may be configured to encapsulate the emission layer EL so that oxygen or moisture can be prevented from penetrating into the emission layer EL. The thin film encapsulation layer TFE may be located on the upper surface and the side of the emission layer EL. The thin film encapsulation layer TFE may include at least one inorganic layer to prevent oxygen or moisture from penetrating into the emission layer EL. In addition, the thin film encapsulation layer TFE may include at least one organic layer to protect the emission layer EL from particles such as dust. The inorganic layer of the thin film encapsulation layer TFE may be formed by a multilayer in which one or more inorganic layers of a silicon nitride layer, a silicon oxynitride layer, a silicon oxide layer, a titanium oxide layer, and an aluminum oxide layer are alternately stacked. The organic layer of the thin film encapsulation layer TFE may be an organic layer such as an acrylic resin, an epoxy resin, a phenolic resin, a polyamide resin, or a polyimide resin.

[0110] The red color filter CF1, the green color filter CF2, and the blue color filter CF3 may be located on the thin film encapsulation layer TFE. The red color filter CF1 (e.g., the first color filter), the green color filter CF2 (e.g., the second color filter), and the blue color filter CF3 (e.g., the third color filter) may transmit red light, green light, and blue light, respectively. The red color filter CF1 may be arranged to correspond to the red pixel SR, thereby transmitting the red light among the white light emitted from the emission layer EL of the red pixel SR. The green color filter CF2 may be arranged to correspond to the green pixel SG, thereby transmitting the green light among the white light emitted from the emission layer EL of the green pixel SG. The blue color filter CF3 may be arranged to correspond to the blue pixel SB, thereby transmitting the blue light among the white light emitted from the emission layer EL of the blue pixel SB. As Figure 8 As shown in , the red color filter CF1, the green color filter CF2, and the blue color filter CF3 may not be formed in the sensor pixel SS. That is, the sensor pixel SS may not include the red color filter CF1, the green color filter CF2, and the blue color filter CF3.

[0111] Fig. 9 is a plan view illustrating an arrangement of sensor pixels SS included in a pixel group P according to some embodiments.

[0112] about Fig. 9 The illustrated embodiment can be used in conjunction with Figure 6 The embodiments shown in the figure are at least partially similar. Figure 6 The embodiments shown in the figure are different from those shown in the figure. Fig. 9 Therefore, the embodiment of the diagram will be described with reference to Figure 6The description of the illustrated embodiment is replaced by Fig. 9 Features not described in .

[0113] About Figure 6 The embodiments shown in the figure are different, according to Fig. 9 In the illustrated embodiment, the horizontal and vertical ratio of the blue pixel SB and the sensor pixel SS is different from the horizontal and vertical ratio of the red pixel SR and the green pixel SG.

[0114] refer to Fig. 9 , one pixel group P includes 2×2 sub-regions, and any one of the red pixel SR, the green pixel SG, and the composite pixel in which the blue pixel SB and the sensor pixel SS are arranged adjacent to each other may be located in each of the plurality of sub-regions. For example, the red pixel SR may be located in the first row and the first column of each pixel group P, and the green pixel SG may be located in the second row and the first column. The composite pixel in which the blue pixel SB and the sensor pixel SS are arranged adjacent to each other may be located in the first row and the second column and the second row and the second column, respectively. The blue pixel SB and the sensor pixel SS may be arranged adjacent to each other in the first direction as the horizontal direction.

[0115] Each of the red pixel SR and the green pixel SG may have a horizontal vertical ratio of 1 to 1. For example, the area of ​​the red pixel SR and the area of ​​the green pixel SG in one pixel group P may be the same as each other, and the red pixel SR and the green pixel SG may have a horizontal vertical ratio of 1 to 1.

[0116] Each of the blue pixel SB and the sensor pixel SS may have a length extending in the second direction as the vertical direction in the second column. For example, the blue pixel SB located in the first row and the blue pixel SB located in the second row may be arranged to be adjacent to each other in the second direction. In addition, the sensor pixel SS located in the first row and the sensor pixel SS located in the second row may be arranged to be adjacent to each other in the second direction. Therefore, the blue pixel SB and the sensor pixel SS may have a horizontal vertical ratio of 1 / 2 to 2.

[0117] The horizontal width of the sensor pixel SS may correspond to half the horizontal width of the red pixel SR (or the green pixel SG). For example, the vertical width of the sensor pixel SS may correspond to twice the vertical width of the red pixel SR (or the green pixel SG).

[0118] Fig.10 is a plan view illustrating an arrangement of sensor pixels SS included in a pixel group P according to some embodiments.

[0119] about Fig.10 The illustrated embodiment can be used in conjunction with Fig. 9The embodiments shown in the figure are at least partially similar. Fig. 9 The embodiments shown in the figure are different from those shown in the figure. Fig.10 Therefore, the embodiment of the diagram will be described with reference to Fig. 9 The description of the illustrated embodiment is replaced by Fig.10 Features not described in .

[0120] About Fig. 9 The embodiments shown in the figure are different, according to Fig.10 In the illustrated embodiment, the blue pixels SB and the sensor pixels SS are arranged in a zigzag shape.

[0121] Each of the blue pixel SB and the sensor pixel SS may be arranged in a zigzag shape along the second direction as the vertical direction in the second column. For example, the blue pixel SB located in the first row and the sensor pixel SS located in the second row may be arranged to be adjacent to each other in the second direction. In addition, the sensor pixel SS located in the first row and the blue pixel SB located in the second row may be arranged to be adjacent to each other in the second direction.

[0122] The blue pixel SB and the sensor pixel SS are arranged adjacent to each other in the first direction as the horizontal direction, but in the first sub-region R1C2 corresponding to the first row and the second column, the sensor pixel SS may be arranged closer to the red pixel SR positioned in the first column than the blue pixel SB. On the other hand, in the second sub-region R2C2 corresponding to the second row and the second column, the blue pixel SB may be arranged closer to the green pixel SG positioned in the first column than the sensor pixel SS. For example, in the first row of the pixel group P, the sensor pixel SS may be located between the red pixel SR and the blue pixel SB, and in the second row of the pixel group P, the blue pixel SB may be located between the green pixel SG and the sensor pixel SS.

[0123] Fig.11 is a plan view illustrating an arrangement of sensor pixels SS included in a pixel group P according to some embodiments.

[0124] about Fig.11 The illustrated embodiment can be used in conjunction with Figure 6 The embodiments shown in the figure are at least partially similar. Figure 6 The embodiments shown in the figure are different from those shown in the figure. Fig.11 Therefore, the embodiment of the diagram will be described with reference to Figure 6 The description of the illustrated embodiment is replaced by Fig.11 Features not described in .

[0125] According to about Fig.11 The illustrated embodiment is similar to Figure 6Different from the illustrated embodiment, one pixel group P includes 4×4 sub-regions, and the sensor pixel SS is located in the sub-region R1C4, which is located at a corner of the 4×4 sub-regions.

[0126] The blue pixel SB may be located in a portion of the fourth column and the second column of the pixel group P. The blue pixel SB may be located in the fourth column of the pixel group P except for one sub-region R1C4 corresponding to the first row and the fourth column. For example, the sensor pixel SS may be located in the first row and the fourth column corresponding to the corner of the pixel group P.

[0127] The red pixel SR and the green pixel SG may be located in the first column and the third column of the pixel group P, and may be alternately arranged along the second direction which is the vertical direction. For example, in the first column of the pixel group P, the red pixel SR may be located in each of the first row and the third row, and the green pixel SG may be located in each of the second row and the fourth row. In addition, in the third column of the pixel group P, the red pixel SR may be located in each of the first row and the third row, and the green pixel SG may be located in each of the second row and the fourth row.

[0128] Fig.12 is a plan view illustrating an arrangement of sensor pixels SS included in a pixel group P according to some embodiments.

[0129] about Fig.12 The illustrated embodiment can be used in conjunction with Fig.11 The embodiments shown in the figure are at least partially similar. Fig.11 The embodiments shown in the figure are different from those shown in the figure. Fig.12 Therefore, the embodiment of the diagram will be described with reference to Fig.11 The description of the illustrated embodiment is replaced by Fig.12 Features not described in .

[0130] About Fig.11 The embodiments shown in the figure are different. Fig.12 In the illustrated embodiment, the pixel groups P have two types, and the two types of pixel groups P are arranged according to a specified rule on the display panel 510. For example, the display panel 510 may include a mixed arrangement structure in which the first pixel group P1 and the second pixel group P2 are arranged according to a specified rule.

[0131] The pixel group P may include a first pixel group P1 in which pixels are arranged in a first type and a second pixel group P2 in which pixels are arranged in a second type. Fig.11In the same manner as the illustrated embodiment, in the first pixel group P1, the sensor pixel SS is located in a sub-region R1C4 corresponding to the first row and the fourth column among the 4×4 sub-regions. Unlike the first pixel group P1, in the second pixel group P2, the sensor pixel SS is located in a sub-region R4C4 corresponding to the fourth row and the fourth column among the 4×4 sub-regions.

[0132] In the display panel 510, the first pixel group P1 and the second pixel group P2 may be arranged in the form of a matrix. In the display panel 510, the resolution of the first pixel group P1 and the resolution of the second pixel group P2 may be the same as each other. According to some embodiments, the sensor pixels SS in the display panel 510 may be arranged to surround the outside of the display panel 510. For example, the first pixel group P1 in which the sensor pixels SS are located at the upper corner may be arranged on the upper end of the display panel 510, and the second pixel group P2 in which the sensor pixels SS are located at the lower corner may be arranged on the lower end of the display panel 510. Therefore, the sensor pixels SS may be arranged to surround the outside of the display panel 510.

[0133] Meanwhile, the position of the sensor pixel SS in each of the first pixel group P1 and the second pixel group P2 is not limited to the example shown. For example, in the first pixel group P1, the sensor pixel SS may be located in the first row and the first column, and in the second pixel group P2, the sensor pixel SS may be located in the fourth row and the first column. Alternatively, in the first pixel group P1, the sensor pixel SS may be located in the fourth row and the first column, and in the second pixel group P2, the sensor pixel SS may be located in the fourth row and the fourth column. Alternatively, in the first pixel group P1, the sensor pixel SS may be located in the first row and the first column, and in the second pixel group P2, the sensor pixel SS may be located in the first row and the fourth column. In addition, the sensor pixel SS may be positioned at any one corner among the 4×4 sub-regions.

[0134] Fig.13 is a plan view illustrating an arrangement of sensor pixels SS included in a pixel group P according to some embodiments.

[0135] about Fig.13 The illustrated embodiment can be used in conjunction with Fig.12 The embodiments shown in the figure are at least partially similar. Fig.12 The embodiments shown in the figure are different from those shown in the figure. Fig.13 Therefore, the embodiment of the diagram will be described with reference to Fig.12 The description of the illustrated embodiment is replaced by Fig.13 Features not described in .

[0136] About Fig.12The embodiments shown in the figure are different, according to Fig.13 In the illustrated embodiment, the blue pixels SB and the sensor pixels SS are arranged in a zigzag shape.

[0137] The composite pixel in which the blue pixel SB and the sensor pixel SS are arranged adjacent to each other may be located in a sub-region R1C4 corresponding to the first row and fourth column in the first pixel group P1. The composite pixel in which the blue pixel SB and the sensor pixel SS are arranged adjacent to each other may be located in a sub-region R2C4 corresponding to the second row and fourth column in the first pixel group P1.

[0138] The composite pixel in which the blue pixel SB and the sensor pixel SS are arranged adjacent to each other may be located in a sub-region R3C4 corresponding to the third row and fourth column in the second pixel group P2. The composite pixel in which the blue pixel SB and the sensor pixel SS are arranged adjacent to each other may be located in a sub-region R4C4 corresponding to the fourth row and fourth column in the second pixel group P2.

[0139] In each of the first pixel group P1 and the second pixel group P2, each of the blue pixel SB and the sensor pixel SS may be arranged in a zigzag shape along the second direction as the vertical direction in a portion of the fourth column. For example, in the first pixel group P1, the blue pixel SB located in the first row and the sensor pixel SS located in the second row may be arranged to be adjacent to each other in the second direction. In addition, in the first pixel group P1, the sensor pixel SS located in the first row and the blue pixel SB located in the second row may be arranged to be adjacent to each other in the second direction. For example, in the second pixel group P2, the blue pixel SB located in the third row and the sensor pixel SS located in the fourth row may be arranged to be adjacent to each other in the second direction. In addition, in the second pixel group P2, the sensor pixel SS located in the third row and the blue pixel SB located in the fourth row may be arranged to be adjacent to each other in the second direction.

[0140] Fig.14 is a plan view illustrating an arrangement of sensor pixels SS included in a pixel group P according to some embodiments.

[0141] about Fig.14 The illustrated embodiment can be used in conjunction with Fig.11 The embodiments shown in the figure are at least partially similar. Fig.11 The embodiments shown in the figure are different from those shown in the figure. Fig.14 Therefore, the embodiment of the diagram will be described with reference to Fig.11 The description of the illustrated embodiment is replaced by Fig.14 Features not described in .

[0142] About Fig.11 The embodiments shown in the figure are different. Fig.14 In the illustrated embodiment, the number of sensor pixels SS in the pixel group P is increased to four.

[0143] According to the example shown, one pixel group P includes 4×4 sub-regions, and the sensor pixels SS may be located in four sub-regions. Fig.11 The embodiments shown in the figure are different. Fig.14 In the illustrated embodiment, the number of blue pixels SB is reduced, which may be because the change in the number of blue pixels SB is relatively less affected by the image quality. Fig.14 In the illustrated embodiment, a portion of the plurality of blue pixels SB is replaced with sensor pixels SS, thereby minimizing image quality degradation and, at the same time, improving sensing performance.

[0144] The sensor pixel SS may be arranged to have a letter "L" shape in one pixel group P, and may be positioned at any corner of the 4×4 sub-regions. For example, the sensor pixel SS may be arranged at the upper right corner of the pixel group P, and may have a horizontal-to-vertical ratio of 3 / 4 to 2 / 4. For example, the sensor pixel SS may be located in a sub-region R1C2 corresponding to the first row and second column, a sub-region R1C3 corresponding to the first row and third column, a sub-region R1C4 corresponding to the first row and fourth column, and a sub-region R2C4 corresponding to the second row and fourth column.

[0145] Meanwhile, the position of the sensor pixel SS in the pixel group P is not limited to the illustrated example. For example, according to some embodiments, in the pixel group P, the sensor pixel SS may be located at the lower right corner, at the upper left corner, or at the lower left corner.

[0146] Fig.15 is a plan view illustrating an arrangement of sensor pixels SS included in a pixel group P according to some embodiments.

[0147] about Fig.15 The illustrated embodiment can be used in conjunction with Figure 6 The embodiments shown in the figure are at least partially similar. Figure 6 The embodiments shown in the figure are different from those shown in the figure. Fig.15 Therefore, the embodiment of the diagram will be described with reference to Figure 6 The description of the illustrated embodiment is replaced by Fig.15 Features not described in .

[0148] About Figure 6 The embodiments shown in the figure are different. Fig.15In the illustrated embodiment, the blue pixel SB and the sensor pixel SS are divided in a diagonal direction in a partial sub-region.

[0149] According to the illustrated example, one pixel group P includes 2×2 sub-regions, and any one of a red pixel SR, a green pixel SG, and a composite pixel in which a blue pixel SB and a sensor pixel SS are arranged adjacent to each other may be located in each of the plurality of sub-regions. For example, in each pixel group P, a red pixel SR may be located in the first row and the first column, a green pixel SG may be located in the second row and the first column, and a blue pixel SB may be located in the second row and the second column. A composite pixel in which a blue pixel SB and a sensor pixel SS are arranged adjacent to each other in a diagonal direction may be located in the first row and the second column.

[0150] A composite pixel in which the blue pixel SB and the sensor pixel SS are arranged to be adjacent to each other in a diagonal direction may be located in one sub-region R1C2 corresponding to the first row and second column in the pixel group P, and the sensor pixel SS may be located at a corner of the pixel group P. Therefore, the blue pixel SB included in the composite pixel may be located adjacent to the blue pixel SB located in the second row and second column.

[0151] Fig.16 is a plan view illustrating an arrangement of sensor pixels SS included in a pixel group P according to some embodiments.

[0152] about Fig.16 The illustrated embodiment can be used in conjunction with Fig.15 The embodiments shown in the figure are at least partially similar. Fig.15 The embodiments shown differ in terms of Fig.16 Therefore, the embodiment of the diagram will be described with reference to Fig.15 The description of the illustrated embodiment is replaced by Fig.16 Features not described in .

[0153] About Fig.15 The embodiments shown in the figure are different. Fig.16 In the illustrated embodiment, one pixel group P includes 4×4 sub-regions, and a composite pixel in which a blue pixel SB and a sensor pixel SS are arranged to be adjacent to each other in a diagonal direction is located in four sub-regions adjacent to the center among the 4×4 sub-regions.

[0154] A composite pixel in which the blue pixel SB and the sensor pixel SS are arranged to be adjacent to each other in the diagonal direction may be located in a sub-region R2C2 corresponding to the second row and the second column, a sub-region R2C3 corresponding to the second row and the third column, a sub-region R3C2 corresponding to the third row and the second column, and a sub-region R3C3 corresponding to the third row and the third column. In this case, the blue pixel SB and the sensor pixel SS may be arranged so that the four composite pixels are symmetrical based on the center of the pixel group P. For example, in each of the four composite pixels, the blue pixel SB and the sensor pixel SS are adjacent to each other in the diagonal direction, but the sensor pixel SS may be arranged closer to the center of the pixel group P than the blue pixel SB. Therefore, the sensor pixel SS may be arranged so that the combination of the four sensor pixels SS may have a rhombus shape (or a diamond shape) as a whole.

[0155] As mentioned above, in regard to Fig.16 In the illustrated embodiment, one pixel group P includes 4×4 sub-regions, and a sensor pixel SS having a rhombus shape (or diamond shape) is located at the center of the pixel group P, and blue pixels SB, green pixels SG, and red pixels SR may be arranged around the periphery of the sensor pixel SS.

[0156] Fig.17 is a plan view illustrating an arrangement of sensor pixels SS included in a pixel group P according to some embodiments.

[0157] about Fig.17 The illustrated embodiment can be used in conjunction with Fig.16 The embodiments shown in the figure are at least partially similar. Fig.16 The embodiments shown in the figure are different from those shown in the figure. Fig.17 Therefore, the embodiment of the diagram will be described with reference to Fig.16 The description of the illustrated embodiment is replaced by Fig.17 Features not described in .

[0158] About Fig.16 The embodiments shown in the figure are different. Fig.17 In the illustrated embodiment, the pixel groups P have two types, and the two types of pixel groups P are arranged according to a specified rule on the display panel 510. For example, the display panel 510 may include a mixed arrangement structure in which the first pixel group P1 and the second pixel group P2 are arranged according to a specified rule.

[0159] The pixel group P may include a first pixel group P1 in which pixels are arranged in a first type and a second pixel group P2 in which pixels are arranged in a second type. Fig.16In the same manner as the illustrated embodiment, the first pixel group P1 may be arranged so that sensor pixels SS among the 4×4 sub-regions may have a rhombus shape (or diamond shape) at the center of the pixel group P. Unlike the first pixel group P1 , the second pixel group P2 does not include sensor pixels SS.

[0160] In the display panel 510, the first pixel group P1 and the second pixel group P2 may be arranged in the form of a matrix. In the display panel 510, the resolution of the first pixel group P1 and the resolution of the second pixel group P2 may be the same as each other. For example, the first pixel group P1 and the second pixel group P2 may be arranged alternately. According to some embodiments, the first pixel group P1 including the sensor pixels SS in the display panel 510 may be arranged to surround the outside of the display panel 510, and the second pixel group P2 may be arranged only inside the display panel 510. For example, the first pixel group P1 may be arranged to surround the outside of a plurality of second pixel groups P2. According to some embodiments, the first pixel group P1 in the display panel 510 may be arranged only in the fourth corner region of the display panel 510, and the second pixel group P2 may be located in other regions.

[0161] Fig.18 is a plan view illustrating an arrangement of sensor pixels SS included in a pixel group P according to some embodiments.

[0162] about Fig.18 The embodiments shown and described may be related to Fig.15 The embodiments shown and described are at least partially similar. Fig.15 The embodiments shown in the figure are different from those shown in the figure. Fig.18 Therefore, the embodiment of the diagram will be described with reference to Fig.15 The description of the illustrated embodiment is replaced by Fig.18 Features not described in .

[0163] About Fig.15 The embodiments shown in the figure are different. Fig.18 In the illustrated embodiment, the blue pixel SB is located at a corner of the pixel group P.

[0164] According to the example shown, one pixel group P includes 2×2 sub-regions, and any one of the red pixel SR, the green pixel SG, and the composite pixel in which the blue pixel SB and the sensor pixel SS are arranged adjacent to each other may be located in each of the plurality of sub-regions. For example, in each pixel group P, the red pixel SR may be located in the first row and the first column, the green pixel SG may be located in the second row and the first column, and the sensor pixel SS may be located in the second row and the second column. A composite pixel in which the blue pixel SB and the sensor pixel SS are arranged adjacent to each other in the diagonal direction may be located in a sub-region R1C2 corresponding to the first row and the second column. At this time, the blue pixel SB may be positioned at the corner of the pixel group P. Therefore, the sensor pixel SS contained in the composite pixel may be positioned adjacent to the sensor pixel SS located in the second row and the second column.

[0165] The various embodiments described in this disclosure should be interpreted as being performed in combination. For example, Figure 6 and Figures 9 to 18 The embodiments described in the foregoing may be performed in combination. Figure 6 The illustrated embodiments and Figures 9 to 18 At least one embodiment selected from the embodiments described in may be performed in combination.

[0166] In the concluding part of the detailed description, those skilled in the art will recognize that many variations and modifications can be made to the exemplary embodiments without departing substantially from the principles of the present disclosure. Therefore, the exemplary embodiments of the present disclosure disclosed are used only in a general and descriptive sense and not for limiting purposes.

Claims

1. A display device, characterized in that: include: glasses, the glasses corresponding to the display area of ​​the lens; a display panel configured to emit display light; a reflective member configured to reflect the display light emitted from the display panel in a direction of the glasses; as well as a light source unit configured to emit near infrared light for tracking eyes of a user, wherein the display panel comprises a plurality of pixel groups arranged in a matrix configuration, each of the plurality of pixel groups comprising a red pixel, a green pixel, a blue pixel and a sensor pixel, the sensor pixel comprising a photodiode configured to sense the near infrared light reflected by the eye of the user, One of the plurality of pixel groups includes 2×2 sub-regions, and Any one of the red pixel, the green pixel, and a composite pixel in which the blue pixel and the sensor pixel are arranged adjacent to each other is located in each of the 2×2 sub-areas.

2. The display device according to claim 1, characterized in that The red pixel and the green pixel have the same area, and each of the red pixel and the green pixel has a horizontal to vertical ratio of 1 to 1, and Each of the blue pixel and the sensor pixel has a horizontal to vertical ratio of 1 / 2 to 2.

3. The display device according to claim 2, characterized in that Among the 2×2 sub-areas, blue pixels in a first row and blue pixels in a second row are adjacent to each other, and sensor pixels in the first row and sensor pixels in the second row are adjacent to each other.

4. The display device according to claim 2, characterized in that: Among the 2×2 sub-areas, the blue pixels in the first row and the sensor pixels in the second row are adjacent to each other, and the sensor pixels in the first row and the blue pixels in the second row are adjacent to each other.

5. The display device according to claim 2, characterized in that: Among the 2×2 sub-areas, the blue pixel and the sensor pixel are arranged so that the composite pixel adjacent to each other is in the first row and the first column, and The blue pixel and the sensor pixel are adjacent to each other in a diagonal direction.

6. The display device according to claim 5, characterized in that: The sensor pixel is positioned at a corner of the one of the plurality of pixel groups, and The blue pixel is in the second row and the second column among the 2×2 sub-areas.

7. The display device according to claim 5, characterized in that: The blue pixel is positioned at a corner of the one of the plurality of pixel groups, and The sensor pixels are in the second row and the second column among the 2×2 sub-regions.

8. A display device, characterized in that: include: glasses, the glasses corresponding to the display area of ​​the lens; a display panel configured to emit display light; a reflective member configured to reflect the display light emitted from the display panel in a direction of the glasses; as well as a light source unit configured to emit near infrared light for tracking eyes of a user, wherein the display panel comprises a plurality of pixel groups arranged in a matrix configuration, each of the plurality of pixel groups comprising a red pixel, a green pixel, a blue pixel and a sensor pixel, the sensor pixel comprising a photodiode configured to sense the near infrared light reflected by the eye of the user, One of the plurality of pixel groups includes 4×4 sub-regions, and Any one of the red pixel, the green pixel, the blue pixel, and the sensor pixel is in each of the 4×4 sub-areas.

9. The display device according to claim 8, characterized in that: The sensor pixel is in a sub-region located at any corner of the 4×4 sub-regions, and Any one of the red pixel, the green pixel, and the blue pixel is in the other sub-region except the sub-region positioned at the any one corner.

10. The display device according to claim 9, characterized in that: Among the 4×4 sub-areas, The red pixel and the green pixel are in the first column and the third column, In the first column and the third column, the red pixels and the green pixels are arranged alternately, and The blue pixels are in a portion of the fourth column excluding the sensor pixels and in the second column.

Images