Patent Application
20200081100
Example embodiments of the present disclosure relate to an illumination device, an electronic apparatus including the illumination device, and an illumination method.
Technologies for mobile devices such as smartphones equipped with sensors such as proximity sensors, three dimensional (3D) depth sensors, or the like have been developed. To apply such sensors to smartphones, light-emitting devices capable of generating light necessary for sensing are required. In this case, it may be difficult to provide a region in which a light-emitting device is provided in a smartphone.
In general, a smartphone includes a display panel to display images. Such a display panel is divided into a plurality of regions on which on-off control is performed to display images, and such regions are referred to as display pixels. Display pixels include display elements such as light-emitting diodes (LEDs) configured to display images, and circuit elements configured to control the display elements. Since a metallic material that does not transmit light is included in the circuit elements, light necessary for sensing operations of sensors may not pass through the display pixels.
Therefore, a light-emitting device configured to generate light necessary for sensing may have to be provided in a region separate from the display panel. In this case, however, the size of a smartphone may increase because an area other than the display panel is required. Alternatively, a notch may be formed in a region of a display panel to place a light-emitting device in the notch. However, this may complicate the design of a display surface of the display panel.
One or more example embodiments provide an illumination device configured to output light through an edge portion of a display surface of an electronic apparatus, and an electronic apparatus including the illumination device.
One or more example embodiments provide an illumination method of outputting light through an edge portion of a display surface of an electronic apparatus.
Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the example embodiments.
According to an aspect of an example embodiment, there is provided an illumination device including a display panel including a first surface and a second surface that is opposite to the first surface, the display panel being configured to output light including image information through the first surface, a light source configured to emit light, the light source being spaced apart from the display panel in a direction away from and normal to the second surface of the display panel, a window panel including a first area configured to transmit the light output from the display panel and a second area configured to transmit the light emitted from the light source, and a light transmitting unit provided between the window panel and the light source, the light transmitting unit configured to transmit the light emitted from the light source to an object through the second area, the light transmitting unit comprising at least one meta-surface.
The at least one meta-surface of the light transmitting unit may include a first meta-surface configured to deflect the light emitted from the light source such that the light deflected by the first meta-surface has a first directivity, a second meta-surface configured to deflect the light deflected by the first meta-surface and having the first directivity such that the light deflected by the second meta-surface has a second directivity that is different from the first directivity, and a third meta-surface configured to diffuse the light deflected by the second meta-surface.
A center portion of the second meta-surface and a center portion of the third meta-surface may face the second area in a direction normal to the second area.
A center portion of the first meta-surface may be closer to the display panel than the center portion of the second meta-surface is to the display panel.
The first directivity may correspond to a direction from the center portion of the first meta-surface toward the center portion of the second meta-surface.
The second directivity may correspond to a direction from the center portion of the second meta-surface toward the center portion of the third meta-surface.
The second directivity may be equal to a direction in which the light emitted from the light source propagates toward the first meta-surface.
The light transmitting unit may further include a first substrate provided between the first meta-surface and the second meta-surface, and a second substrate provided between the second meta-surface and the third meta-surface.
The first meta-surface may include a plurality of first nanostructures having a shape dimension which is less than a wavelength of the light emitted from the light source.
The first meta-surface may be configured to collimate the light emitted from the light source based on a shape and a distribution of each of the plurality of first nanostructures.
The second meta-surface may include a plurality of second nanostructures having a shape dimension which is less than a wavelength of the light from the light source.
The second meta-surface may be configured to collimate the light output from the first meta-surface based on a shape and a distribution of each of the plurality of second nanostructures.
The third meta-surface may include a plurality of third nanostructures having a shape dimension which is less than a wavelength of the light from the light source.
The third meta-surface may be configured to diffuse and transmit the light output from the second meta-surface to radiate the object with flood illumination based on a shape and a distribution of each of the plurality of third nanostructures.
The flood illumination may have a field of view of 80 degrees.
The light source may include a plurality of light-emitting elements.
Each of the plurality of light-emitting elements may include a vertical cavity surface emitting laser (VCSEL).
The illumination device may further include a support substrate provided on a lower side of the light source opposite to the light transmitting unit, a plurality of support portions provided between the support substrate and the light transmitting unit and configured to provide a space in which the light source is provided, and a housing surrounding the window panel, the light transmitting unit, the support substrate, and the plurality of support portions.
According to another aspect of an example embodiment, there is provided an electronic apparatus including an illumination device including a display panel including a first surface and a second surface that is opposite to the first surface, the display panel being configured to output light including image information through the first surface, a light source configured to emit light, the light source being spaced apart from the display panel in a direction away from and normal to the second surface of the display panel, a window panel including a first area configured to transmit the light output from the display panel and a second area configured to transmit the light emitted from the light source, and a light transmitting unit provided between the window panel and the light source, the light transmitting unit configured to transmit the light emitted from the light source to an object through the second area, the light transmitting unit comprising at least one meta-surface, a sensor configured to receive light reflected from the object, and a processor configured to acquire information about the object based on the light received by the sensor.
According to yet another aspect of an example embodiment, there is provided an illumination method using an illumination device, the illumination device including a window panel having a first area and a second area, and a light source provided on a lower side of an area not corresponding to the second area, the illumination method including refracting light emitted from the light source to change a direction of the light emitted by the light source toward a lower surface of the second area, refracting and collimating the light incident on the lower surface of the second area to change the direction of the light incident on the lower surface of the second area toward a lower surface of the window panel, and diffusing the light incident on the lower surface of the window panel to emit flood illumination light.
The above and/or other aspects will become apparent and more readily appreciated from the following description of example embodiments, taken in conjunction with the accompanying drawings in which:
Reference will now be made in detail to example embodiments of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout, and the size or thickness of each element may be exaggerated for clarity of illustration. In this regard, the example embodiments may have different forms and should not be construed as being limited to the descriptions set forth herein. Accordingly, the example embodiments are merely described below, by referring to the figures, to explain aspects. Expressions such as “at least one of,” when preceding a list of elements, modify the entire list of elements and do not modify the individual elements of the list. For example, the expression, “at least one of a, b, and c,” should be understood as including only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.
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 other elements.
In the following description, when an element is referred to as being “above” or “on” another element, it may be directly on the other element while making contact with the other element or may be above the other element without making contact with the other element.
In the present disclosure, it will be further understood that the terms “comprises” and/or “comprising” specify the presence of stated features or elements, but do not preclude the presence or addition of one or more other features or elements.
Referring to
The display panel 100 may include the first surface 100a through which light having image information is output, and the second surface 100b opposite to the first surface 100a, wherein a plurality of display pixels may be arranged between the first surface 100a and the second surface 100b.
The display panel 100 may include a display element such as a liquid crystal display (LCD) or an organic light-emitting diode (OLED). When the display element is an LCD, the display panel 100 may be provided with a separate light source for the display element. The display element is divided into a plurality of regions on which on-off control is performed according to image information, and the regions may be display pixels.
The light source 200 may be a light-emitting array including a plurality of light-emitting elements 220 and a substrate 210. For example, the light-emitting elements 220 may be LEDs or laser diodes configured to emit laser light. The light-emitting elements 220 may be vertical cavity surface emitting lasers (VCSELs). The light-emitting elements 220 may be distributed feedback (DFB) lasers. For example, each of the light-emitting elements 220 may include an active layer that has a III-V group semiconductor material or a II-VI group semiconductor material and a multi-quantum well structure. However, the light-emitting elements 220 are not limited thereto. The light-emitting elements 220 may emit laser light having a wavelength of about 850 nm or about 940 nm, or may emit light in a near infrared wavelength band or a visible light wavelength band. The wavelength of light emitted from the light-emitting elements 220 is not particularly limited, and the light-emitting elements 220 may be configured to emit light in a desired wavelength band.
The window panel 300 may include a material that transmits light. For example, the window panel 300 may include, but is not limited to, glass. The display panel 100 may be provided on the window panel 300 in the first area Al of the window panel 300. Thus, light output from the display panel 100 may pass through the first area Al. The first area Al may be a center portion of the window panel 300. The display panel 100 is not provided in the second area A2. For example, the light transmitting unit 400 may be provided in the second area A2. As a result, light emitted from the light source 200 and passing through the light transmitting unit 400 may propagate through the second area A2. The second area A2 may be an edge portion of the window panel 300.
The light transmitting unit 400 may be arranged between the window panel 300 and the light source 200, and may transmit light emitted from the light source 200 to an object through the second area A2. The light transmitting unit 400 may include a first meta-surface 410 that deflects light emitted from the light source 200 such that the light may have a first directivity. The light transmitting unit 400 may include a second meta-surface 420 that deflects the light deflected by the first meta-surface 410 and having the first directivity such that the light may have a second directivity different from the first directivity. The second meta-surface 420 may be provided between the first meta-surface 410 and the window panel 300. The light transmitting unit 400 may include a third meta-surface 430 which diffuses the light deflected by the second meta-surface 420. The third meta-surface 430 may be provided between the second meta-surface 420 and the window panel 300. A center portion of the second meta-surface 420 and a center portion of the third meta-surface 430 may face the second area A2. However, example embodiments are not limited thereto. For example, a central portion of the first meta-surface 410 may face the first area A1. Accordingly, a center portion of the first meta-surface 410 may be closer to the display panel 100 than the center portion of the second meta-surface 420 is to the display panel 100. The first meta-surface 410 faces the light source 200 in a direction normal to the first meta-surface 410, and thus it is difficult to arrange the light source 200 to face the second area A2 in a direction normal to the second area A2 because of design limitations. As described above, the light transmitting unit 400 may change the propagation direction of light emitted from the light source 200 that does not face the second area A2 in a direction normal to the second area A2 such that the light may be incident on the second area A2 in a direction normal to the second area A2. The process in which the propagation direction of light emitted from the light source 200 is changed by the light transmitting unit 400 will be described later with reference to
In addition, the light transmitting unit 400 may include a first substrate 440 between the first meta-surface 410 and the second meta-surface 420. The light transmitting unit 400 may include a second substrate 450 between the second meta-surface 420 and the third meta-surface 430. The first substrate 440 and the second substrate 450 may be paths through which light emitted from the light source 200 propagates. For example, the first substrate 440 and the second substrate 450 may include, but are not limited thereto, glass configured to transmit light.
The distance between the light transmitting unit 400 and the window panel 300 may be less than the distance between the light transmitting unit 400 and the light source 200. For example, the distance between the window panel 300 and the third meta-surface 430 facing the second area A2 may be less than the distance between the first meta-surface 410 and the light source 200.
Referring to
The light deflected by the first meta-surface 410 may be deflected by the second meta-surface 420 such that the light may have a second directivity. For example, the second meta-surface 420 may refract light output from the first meta-surface 410 such that the light may have a second directivity. The second directivity may indicate a direction toward the center portion of the third meta-surface 430 from the center portion of the second meta-surface 420. The direction toward the center portion of the third meta-surface 430 may include a direction exactly toward the center of the third meta-surface 430 and a direction toward the vicinity of a region in which the third meta-surface 430 is located. Accordingly, the light may propagate toward the third meta-surface 430 in a direction normal to the third meta-surface 430. In addition, the second directivity may be the same as the direction in which light propagates from the light source 200 toward the first meta-surface 410. In addition, the second meta-surface 420 may simultaneously refract and collimate the light output from the first meta-surface 410. Accordingly, the light output from the first meta-surface 410 may be collimated by the second meta-surface 420, and then the light may proceed toward the third meta-surface 430 as parallel light.
The light deflected by the second meta-surface 420 may be diffused by the third meta-surface 430. The light diffused by the third meta-surface 430 may be transmitted to an object located outside the illumination device 1000 as flood illumination light. The field of view of the flood illumination formed by the third meta-surface 430 may be about 80 degrees, but is not limited thereto.
The first meta-surface 410, the second meta-surface 420, and the third meta-surface 430 may respectively include a plurality of first nanostructures 10, a plurality of second nanostructure 20, and a plurality of third nanostructures 30 which have a shape dimension less than the wavelength of light emitted from the light source 200. For example, the thickness or width of the first nanostructure 10, the second nanostructure 20, and third nanostructure 30, which defines the shape of the first nanostructure 10, the second nanostructure 20, and third nanostructure 30, may be less than the wavelength of light emitted from the light source 200. The first nanostructure 10, the second nanostructure 20, and third nanostructure 30 may have various shapes such as a cylinder shape, an elliptic cylinder shape, or a polygonal cylinder shape. The first nanostructure 10, the second nanostructure 20, and third nanostructure 30 may respectively include a material having a refractive index greater than the refractive index of a surrounding material, for example, air, or the refractive index of the first substrate 440 and the second substrate 450. For example, the first nanostructure 10, the second nanostructure 20, and third nanostructure 30 may include one of single crystal silicon (Si), poly Si, amorphous Si, silicon nitride (Si3N4), gallium phospide (GaP), titanium oxide (TiO2), aluminum antimonide (AlSb), aluminum arsenide (AlAs), aluminum gallium arsenide (AIGaAs), aluminum gallium indium phosphide (AlGaInP), boron phosphide (BP), and zinc germanium phosphide (ZnGeP2).
The first nanostructure 10, the second nanostructure 20, and third nanostructure 30 may change the propagation direction of incident light depending on factors such as the shape or arrangement of the first nanostructure 10, the second nanostructure 20, and third nanostructure 30. For example, the shape distribution of the first nanostructures 10 may be determined such that the first meta-surface 410 may refract light emitted from the light source 200. In addition, the shape distribution of the second nanostructures 20 may be determined such that the second meta-surface 420 may refract and collimate light output from the first meta-surface 410. In addition, the shape distribution of the third nanostructures 30 may be determined such that the third meta-surface 430 may diffuse light coming from the second meta-surface 420. Here, the shape distribution may include the shape and size of the first nanostructure 10, the second nanostructure 20, and third nanostructure 30. In addition, the shape distribution may include the distribution of the arrangement pitches of the first nanostructure 10, the second nanostructure 20, and third nanostructure 30. Accordingly, one or more of the thickness, the width, and the arrangement interval of the first nanostructure 10, the second nanostructure 20, and third nanostructure 30 may be equal to or less than half the wavelength of light emitted from the light source 200. In
The first substrate 440 and the second substrate 450 may support the first nanostructure 10, the second nanostructure 20, and third nanostructure 30, and may include a material having a refractive index less than the refractive index of the first nanostructure 10, the second nanostructure 20, and third nanostructure 30. The difference between the refractive index of the first substrate 440 and the second substrate 450 and the refractive index of the first nanostructure 10, the second nanostructure 20, and third nanostructure 30 may be about 0.5 or greater. For example, the first substrate 440 and the second substrate 450 may include SiO2, a transparent conductive oxide (TCO), or a polymer such as polycarbonate (PC), polystyrene (PS), or polymethylmethacrylate (PMMA), but are not limited thereto.
Referring to
As described above, the first meta-surface 411, the second meta-surface 412, and the third meta-surface 431 may respectively have a plurality of first nanostructures 11, a plurality of second nanostructures 21, and a plurality of third nanostructures 31. The first nanostructure 11, the second nanostructure 21, and the third nanostructure 31 may change the propagation direction of incident light depending on factors such as the shape or arrangement of the first nanostructure 11, the second nanostructure 21, and the third nanostructure 31. For example, the shape distribution of the first nanostructures 11 may be determined such that the first meta-surface 411 may refract light emitted from a light source 201. In addition, the shape distribution of the second nanostructures 21 may be determined such that the second meta-surface 421 may refract and collimate light output from the first meta-surface 411. In addition, the shape distribution of the third nanostructures 31 may be determined such that the third meta-surface 431 may diffuse light coming from the second meta-surface 421.
Referring to
As described above, the first meta-surface 412, the second meta-surface 422, and the third meta-surface 432 may respectively have a plurality of first nanostructures 12, a plurality of second nanostructures 22, and a plurality of third nanostructures 32. As described above, the first meta-surface 412, the second meta-surface 422, and the third meta-surface 432 may respectively include a plurality of first nanostructures 12, a plurality of second nanostructures 22, and a plurality of third nanostructures 32. The first nanostructure 12, the second nanostructure 22, and the third nanostructure 32 may change the propagation direction of incident light depending on factors such as the shape or arrangement of the first nanostructure 12, the second nanostructure 22, and the third nanostructure 32. For example, the shape distribution of the first nanostructures 12 may be determined such that the first meta-surface 412 may refract light emitted from a light source 202. In addition, the shape distribution of the second nanostructures 22 may be determined such that the second meta-surface 422 may refract and collimate light output from the first meta-surface 412. In addition, the shape distribution of the third nanostructures 32 may be determined such that the third meta-surface 432 may diffuse light coming from the second meta-surface 422.
Referring to
The light deflected by the first meta-surface 413 may be deflected by the second meta-surface 423 such that the light may have a second directivity. For example, the second meta-surface 423 may refract the light output from the first meta-surface 413 such that the light may have a second directivity. The degree of refraction of the light may not be constant at a plurality of points of the first meta-surface 413. The second directivity may indicate a direction toward a center portion of the third meta-surface 433 from the center portion of the second meta-surface 423. The direction toward the center portion of the third meta-surface 433 may include a direction exactly toward the center of the third meta-surface 433 and a direction toward the vicinity of a region in which the third meta-surface 433 is located. Accordingly, the light may propagate toward the third meta-surface 433 in a direction normal to the third meta-surface 433. In addition, the second directivity may be the same as the direction in which light propagates from the light source 203 toward the first meta-surface 413. In addition, the second meta-surface 423 may simultaneously refract and collimate the light output from the first meta-surface 413. Accordingly, the light output from the first meta-surface 413 may be collimated by the second meta-surface 423, and then the light may proceed toward the third meta-surface 433 as parallel light.
The light deflected by the second meta-surface 423 may be diffused by the third meta-surface 433. The light diffused by the third meta-surface 433 may be transmitted to an object as flood illumination light.
As described above, the first meta-surface 413, the second meta-surface 423, and the third meta-surface 433 may respectively include a plurality of first nanostructures 13, a plurality of second nanostructures 23, and a plurality of third nanostructures 33. The first nanostructures 13, the second nanostructures 23, and the third nanostructures 33 may vary the propagation direction of incident light depending on factors such as the shape or arrangement of the first nanostructures 13, the second nanostructures 23, and the third nanostructures 33. For example, the shape distribution of the first nanostructures 13 may be determined such that the first meta-surface 413 may refract and collimate light emitted from the light source 203. In addition, the shape distribution of the second nanostructures 23 may be determined such that the second meta-surface 423 may refract and collimate light output from the first meta-surface 413. In addition, the shape distribution of the third nanostructures 33 may be determined such that the third meta-surface 433 may diffuse light output from the second meta-surface 423.
In addition, although the second meta-surface 423 is illustrated as being in contact with both the first substrate 443 and the second substrate 453, the second meta-surface 423 is not limited thereto. For example, similar to the second meta-surface 421 shown in
Referring to
Referring to
The illumination device 2100 may include a light source, a first meta-surface, a second meta-surface, and a third meta-surface, and may illuminate the object OBJ by changing the distribution of light emitted from the light source and transmitting the light toward the object OBJ through a bezel of a display panel. The illumination device 2100 may be one of the illumination devices of the example embodiments described with reference to
Additional optical devices may be arranged between the illumination device 2100 and the object OBJ to adjust the direction of light LFL emitted from the illumination device 2100 toward the object OBJ or additionally modulate the light LFL.
The illumination device 2100 may illuminate the object OBJ with flood light LFL. The flood light LFL may be light capable of illuminating the object OBJ entirely at once with a uniform light distribution. Uniform light distribution may not be a state of 100% uniformity but a state in which an illumination target region of the object OBJ is substantially uniformly illuminated. Specific structures of the first meta-surface, the second meta-surface, and the third meta-surface, that is, the shape distribution of nanostructures provided on the first meta-surface, the second meta-surface, and the third meta-surface may be determined to obtain a desired uniformity distribution of flood light LFL according to the position and shape of the object OBJ. The object OBJ may be the face of a user of the electronic apparatus 2000. The position of the object OBJ may be about 30 cm to about 1 m away from the illuminating device 2100, but is not limited thereto.
The sensor 2300 senses light Lr reflected from the object OBJ. The sensor 2300 may include an array of light detecting elements. The sensor 2300 may further include a spectroscopic element to analyze light Lr reflected from the object OBJ according to wavelengths of the light Lr.
The processor 2200 may perform an operation using light detected by the sensor 2300 to obtain information about the object OBJ. In addition, the processor 2200 may be responsible for all processing and controlling operations of the electronic apparatus 2000. The processor 2200 may acquire information about the object, for example, may acquire and process two-dimensional or three-dimensional image information about the object OBJ. In addition, the processor 2200 may control overall operations such as the operation of the light source of the illumination device 2100 or the operation of the sensor 2300. In addition, the processor 2200 may also determine whether to authenticate a user based on information acquired from the object OBJ, or may execute other applications.
The memory 2400 may store codes to be executed on the processor 2200. In addition to this, the memory 2400 may store various execution modules to be executed on the electronic apparatus 2000, and data for the execution of the various execution modules. For example, the memory 2400 may store a program code to be used when the processor 2200 performs an operation for acquiring information about the object OBJ, and codes such as application modules to be executed using the information about the object OBJ. In addition, the electronic apparatus 2000 may include additional devices, and the memory 2400 may further store programs such as a communication module, a camera module, a video replay module, or an audio replay module for operating the additional devices.
Results of calculation of the processor 2200, that is, information about the shape and position of the object OBJ may be transmitted to another device or unit if necessary. For example, information about the object OBJ may be transmitted to a controller of another electronic apparatus that uses the information about the object OBJ. The other device or unit to which results of calculation of the processor 2200 are transmitted may be a display device or a printer capable of outputting the results. The other device or unit may be, but is not limited thereto, a smartphone, a cellular phone, a personal digital assistant (PDA), a laptop, a personal computer (PC), a wearable device, a mobile device, or a non-mobile computing device.
The memory 2400 may include at least one type of recording medium selected from the group consisting of a flash memory, a hard disk, a micro multimedia card, a memory card (e.g., a secure digital (SD) card or an extreme digital (XD) card), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and an optical disk.
For example, the electronic apparatus 2000 may be, but is not limited thereto, a portable mobile communication device, a smartphone, a smart watch, a PDA, a laptop, a PC, a mobile computing device, or a non-mobile computing device. The electronic apparatus 2000 may be an autonomous device such as an unmanned vehicle, an autonomous vehicle, a robot, or a drone, or may be an Internet of things (IoT) device.
Referring to
Any one of the illumination devices described with reference to
Referring to
In the first light direction changing operation S101, light emitted from the light source, which is located at a position does not face the second area of the window panel in a direction normal to the window panel, may be transmitted to a lower side of the second area of the window panel. Based on operation S101, light emitted from the light source, which is not located to face the second area of the window panel in a direction normal to the window panel because of design limitations, may reach the second area of the window panel. In the first light direction changing operation S101, light emitted from the light source may be refracted to change the propagation direction of the light. Furthermore, in the first light direction changing operation S101, the light emitted from the light source may be collimated to provide parallel light.
In the second light direction changing operation S102, the light propagating at an arbitrary angle toward the lower side of the second area of the window panel may be directed such that the light may propagate perpendicularly toward the window panel. Thus, light emitted from the light source may be incident on a lower surface of the second area of the window panel at a direction normal to the lower surface of the second area of the window panel. In the second light direction changing operation S102, the light from the light source may be refracted to change the propagation direction of the light. Furthermore, in the second light direction changing operation S102, the light from the light source may be collimated to provide parallel light.
In the flood illumination providing operation S103, the light reaching the lower surface of the second area of the window panel may be diffused. As the light is diffused as described above, uniform flood light may be provided.
Light emitted from the light source that does not face the second area of the window panel in a direction normal to the second area of the window panel may be directed to the second area of the window panel by the above-described illumination method. Furthermore, flood light may be output through the second area of the window panel. Due to design limitations, the light source may not be arranged to face the second area of the window panel in a direction normal to the second area of the window panel which corresponds to a bezel. In this example, light emitted from the light source may be output through the bezel as flood light by using the above-described illumination method according to an example embodiment.
Light emitted from a light source located on a rear side of a display panel may be output through an edge portion of a display surface of an electronic apparatus by using the above-described illumination device and the illumination method.
Therefore, a light source may be more effectively arranged for various sensors without affecting the size of a display surface of a display panel.
The operations described in the example embodiments which are not intended to limit the scope of the present disclosure. For simplicity of description, electronic configurations, control systems, and software of the related art, and other functional aspects of the systems may not be described. Furthermore, line connections or connection members between elements depicted in the drawings represent functional connections and/or physical or circuit connections by way of example, and in actual applications, they may be replaced or embodied as various additional functional connections, physical connections, or circuit connections.
It should be understood that example embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within each example embodiment should typically be considered as available for other similar features or aspects in other embodiments.
While example embodiments have been described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope as defined by the following claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2019-0030559 | Mar 2019 | KR | national |
This application claims the benefit of U.S. Provisional Application No. 62/728,252, filed on Sep. 7, 2018 in the U.S. Patent and Trademark Office, and U.S. Provisional Application No. 62/730,281, filed on Sep. 12, 2018 in the U.S. Patent and Trademark Office, and priority to Korean Patent Application No. 10-2019-0030559, filed on Mar. 18, 2019 in the Korean Intellectual Property Office, the disclosures of which are incorporated herein in their entireties by reference.
| Number | Date | Country | |
|---|---|---|---|
| 62730281 | Sep 2018 | US | |
| 62728252 | Sep 2018 | US |
