KR20240079053A - Display device including lens - Google Patents

Abstract

Embodiments of the present disclosure relate to a display panel and a display device, and more specifically, include a lens located inside a cover window member overlapping with a light receiving device, and further disposed in the first display area and the third display area. By changing the arrangement and structure of the pixel area of the subpixel and including the first transmission area and the second transmission area, the amount of light incident on the light receiving device is increased to improve camera image quality and the image quality displayed in each display area is improved. A display panel and display device can be provided.

Description

Display device including a lens {DISPLAY DEVICE INCLUDING LENS}

Embodiments of the present disclosure relate to a display device including a lens.

As technology advances, display devices may include light-receiving devices such as cameras. The light receiving device of the display device is located in the front of the display device where an image is displayed and can be used for video calls, etc.

In order to place the light receiving device in front of the display device, the light receiving device may be located in a non-display area around the display area of the display device. However, from the aesthetic and practical aspects of the display device, the area of the non-display area located in the front of the display device is gradually decreasing, making it difficult to place the light receiving device in the non-display area.

In order to solve the above-mentioned problem, the light receiving device can be placed in the display area of the display device, but pixels for displaying images and wires for driving the pixels are located in the display area, making it difficult to allow sufficient light to reach the light receiving device. There is a problem.

Embodiments of the present disclosure can provide a display device and a display panel in which a light receiving device is located behind the display panel so that the light receiving device (e.g., camera, proximity sensor, etc.) that needs to receive light from the front is not exposed to the front. there is.

Embodiments of the present disclosure can provide a display device and a display panel in which light from the front of the display panel can be well transmitted to the light receiving device through the display panel, even if the light receiving device is located behind the display panel.

Embodiments of the present disclosure can provide a display device and display panel in which there is no visual difference between the imaging area and a display area other than the imaging area by adjusting the pixel arrangement of the imaging area located on the upper part of the display panel.

In one aspect, embodiments of the present disclosure include a display panel including a substrate, a display area, and a plurality of subpixels provided in the display area, wherein the display area includes a first display area and a second display area, It includes a light receiving device located behind the display panel and positioned overlapping with the first display area, and a cover window member located in front of the display panel and covering the display panel, wherein the first display area includes a pixel area, a wiring area, and a first transmission area. and a second transmission area, wherein the plurality of subpixels provided in the second display area are different in number per unit area from the plurality of subpixels provided in the first display area, and are positioned within the cover window member to overlap with the light receiving device. A display device may be provided including a lens, wherein the first display area has an area equal to or smaller than that of the lens.

The second transmissive area is disposed at the center of the first display area, and a display device in which the area of the second transmissive area is larger than the area of the first transmissive area can be provided.

A display device can be provided in which the size of subpixels provided in the first display area becomes smaller as it moves toward the center of the first display area.

A display device can be provided in which the area of the first transmission area increases toward the center of the first display area.

A display device can be provided in which the area of the lens is 100 times or more than the area of the second transmission area.

In another aspect, embodiments of the present disclosure include a display panel including a substrate, a display area, and a plurality of subpixels provided in the display area, and the display area includes a first display area, a second display area, and a third display area. , a light receiving device located behind the display panel and positioned overlapping with the first display area, and a cover window member located in front of the display panel and covering the display panel, wherein the first display area and the third display area are pixel areas and wiring. area, including a first transmission area, the third display area is included in the first display area and has a smaller area, and the plurality of subpixels provided in the third display area have a shape similar to the plurality of subpixels provided in the first display area. It is possible to provide a display device that is different from each other and includes a lens positioned to overlap the light receiving device inside the cover window member, and the third display area has an area smaller than the lens.

Embodiments of the present disclosure According to this, a display device and display panel with improved camera image quality can be provided by including a lens in the cover window member area that overlaps the light receiving device to increase the amount of light received by the light receiving device.

In addition, according to embodiments of the present disclosure, the arrangement and structure of the pixel area of the subpixels arranged in the first display area or the third display area are modified compared to the second display area, and the first transparent area or the second display area is modified. By modifying the arrangement and structure of the transmission area, light concentration is increased and the second display area and first display area and a display device and display panel that reduce visual heterogeneity in the third display area.

1 and 2 are system configuration diagrams of a display device according to embodiments of the present disclosure.
Figure 3 is a diagram showing a touch panel according to embodiments of the present disclosure.
Figure 4 is a diagram showing a touch electrode of a display panel according to embodiments of the present disclosure.
5 is a subpixel circuit diagram of a display panel according to embodiments of the present disclosure.
Figure 6 is a diagram showing a display device according to embodiments of the present disclosure.
FIG. 7 is a diagram illustrating a transmissive area and a non-transmissive area included in the first display area of a display panel according to embodiments of the present disclosure.
FIG. 8 is a diagram illustrating a transmission area, a pixel area, and a wiring area included in the first display area of the display panel according to embodiments of the present disclosure.
9 is a diagram simply showing a cross section of a display panel according to embodiments of the present disclosure.
FIG. 10 is a diagram illustrating structural characteristics of an insulating film to which a transmittance improvement structure is applied in a display panel according to embodiments of the present disclosure.
FIG. 11 is a diagram illustrating the arrangement of a lens and a light receiving device in a display device according to embodiments of the present disclosure.
FIG. 12 is a diagram illustrating a process in which external light is received by a light receiving device through a lens in a display device according to embodiments of the present disclosure.
FIG. 13 is a diagram showing the positions of the first to third display areas and the second transparent area and the arrangement and structure of the light emitting areas of the subpixels included in each display area in the display panel according to embodiments of the present disclosure. am.
FIG. 14 is a diagram illustrating a transmission area, a pixel area, and a wiring area included in the third display area of the display panel according to embodiments of the present disclosure.
FIG. 15 is another diagram showing a transmission area, a pixel area, and a wiring area included in the third display area of the display panel according to the embodiments of the present disclosure.

Hereinafter, some embodiments of the present disclosure will be described in detail with reference to illustrative drawings. In adding reference numerals to components in each drawing, identical components may have the same reference numerals as much as possible even if they are shown in different drawings. Additionally, in describing the present disclosure, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present disclosure, the detailed description may be omitted. When “comprises,” “has,” “consists of,” etc. mentioned in the specification are used, other parts may be added unless “only” is used. When a component is expressed in the singular, it can also include the plural, unless specifically stated otherwise.

Additionally, in describing the components of the present disclosure, terms such as first, second, A, B, (a), and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, sequence, order, or number of the components are not limited by the term.

In the description of the positional relationship of components, when two or more components are described as being “connected,” “coupled,” or “connected,” the two or more components are directly “connected,” “coupled,” or “connected.” ", but it should be understood that two or more components and other components may be further "interposed" and "connected," "combined," or "connected." Here, other components may be included in one or more of two or more components that are “connected,” “coupled,” or “connected” to each other.

In the explanation of temporal flow relationships related to components, operation methods, production methods, etc., for example, temporal precedence relationships such as “after”, “after”, “after”, “before”, etc. Or, when a sequential relationship is described, non-continuous cases may be included unless “immediately” or “directly” is used.

On the other hand, when a numerical value or corresponding information (e.g. level, etc.) for a component is mentioned, even if there is no separate explicit description, the numerical value or corresponding information is related to various factors (e.g. process factors, internal or external shocks, It can be interpreted as including the error range that may occur due to noise, etc.).

1 is a structural diagram showing a display device according to embodiments of the present disclosure.

Referring to FIG. 1, a display device 10 according to embodiments of the present disclosure includes a display panel 100 including an active area (A/A) and a non-active area (N/A), and a display panel. A control unit for driving 100 may include a gate driving circuit (GDC), a data driving circuit (DDC), and a controller (CTR).

In the display panel 100, a plurality of gate lines GL and a plurality of data lines DL are arranged, and a subpixel SP is arranged in an area where the gate line GL and the data line DL intersect. You can. Additionally, the display panel 100 may be a liquid crystal panel. The liquid crystal panel may include a pixel electrode, a common electrode, and a liquid crystal layer disposed between the pixel electrode and the common electrode. The liquid crystal layer changes the molecular arrangement in response to the voltage applied to the pixel electrode and the common electrode, thereby blocking or blocking light. Images can be displayed through transmission.

The gate driving circuit (GDC) is controlled by the controller (CTR) and sequentially outputs scan signals to the plurality of gate lines (GL) arranged on the display panel 100 to determine the driving timing of the plurality of subpixels (SP). can be controlled.

The data driving circuit (DDC) may receive image data from the controller (CTR) and convert the image data into an analog data voltage. The data driving circuit (DDC) outputs the data voltage to each data line (DL) in accordance with the timing when the scan signal is applied through the gate line (GL), allowing each subpixel (SP) to express brightness according to the image data. You can.

The controller (CTR) supplies various control signals to the gate driving circuit (GDC) and data driving circuit (DDC) and can control the operations of the gate driving circuit (GDC) and data driving circuit (DDC).

This display device 10 supplies various voltages or currents to the display panel 100, a gate driving circuit (GDC), and a data driving circuit (DDC), or further includes a power management integrated circuit that controls various voltages or currents to be supplied. can include

The display device 10 according to the present embodiments may be an organic light emitting display device, a liquid crystal display device, a plasma display device, or the like.

When the display device 10 according to the present embodiments is an organic light emitting display device, each subpixel (SP) arranged in the display panel 100 includes an organic light emitting diode (OLED: Organic Light Emitting Diode), which is a self-light emitting device. , may be composed of circuit elements such as a driving transistor for driving an organic light-emitting diode (OLED).

The type and number of circuit elements constituting each subpixel (SP) may be determined in various ways depending on the provided function and design method.

Figure 2 is a system configuration diagram of the display device 10 according to embodiments of the present disclosure.

Referring to FIG. 2 , the display device 10 according to embodiments may provide an image display function for displaying an image and a touch sensing function for sensing a user's touch.

The display device 10 according to embodiments includes a display panel 100 on which data lines and gate lines are arranged for displaying an image, and a display driving circuit 101 for driving the display panel 100. It can be included.

Functionally, the display driving circuit 101 includes a data driving circuit for driving data lines, a gate driving circuit for driving gate lines, a controller for controlling the data driving circuit and the gate driving circuit, etc. can do.

The display driving circuit 101 may be implemented with one or more integrated circuits.

The display device 10 according to embodiments has a plurality of touch electrodes (TE) disposed as a touch sensor for touch sensing, and electrically connects all or part of the plurality of touch electrodes (TE). It may include a touch panel (TSP) on which a plurality of touch lines (TL) connected to each other are disposed, and a touch circuit 102 that drives the touch panel (TSP) to sense the presence or absence of a touch or a touch position.

The touch circuit 102 supplies a touch driving signal to the touch panel (TSP) to drive the touch panel (TSP), detects a touch sensing signal from the touch panel (TSP), and based on this, detects the presence or absence of touch and/or touch. Sensing the location (touch coordinates).

This touch circuit 102 may be implemented by including a touch driving circuit that supplies a touch driving signal and receives a touch sensing signal, and a touch controller that calculates the presence or absence of touch and/or the touch position (touch coordinates).

The touch circuit 102 may be implemented with one or two or more components (eg, integrated circuits), and may be implemented separately from the display driving circuit 101.

Additionally, all or part of the touch circuit 102 may be implemented by being integrated with the display driving circuit 101 or its internal circuit. For example, the touch driving circuit of the touch circuit 102 may be implemented as an integrated circuit together with the data driving circuit of the display driving circuit 101.

Meanwhile, the display device 10 according to embodiments may sense a touch based on capacitance formed in the touch electrodes TE.

Among the driving touch electrodes in the touch electrodes TE, driving touch electrodes arranged in the same row (or same column) are electrically connected to each other to form one driving touch electrode line.

Among the sensing touch electrodes in the touch electrodes TE, the sensing touch electrodes arranged in the same column (or the same row) are electrically connected to each other to form one sensing touch electrode line.

Additionally, the display panel 100 of the display device 10 according to embodiments may be of various types, such as an organic light emitting diode panel (OLED Panel) and a liquid crystal display panel (LCD Panel). Below, for convenience of explanation, the organic light emitting diode panel (OLED Panel) is mainly used as an example.

Figure 3 is a diagram showing a touch panel (TSP) according to embodiments of the present disclosure.

Referring to FIG. 3, a plurality of touch electrodes (TE) are disposed on the touch panel (TSP), and touch lines (TL) may be disposed to electrically connect the touch electrodes (TE) and the touch circuit. there is.

These touch lines (TL) may be electrically connected to the touch electrode (TE) disposed at the outermost position among the touch electrodes (TE). Below, the outermost touch electrode (TE) is also referred to as the outermost touch electrode (O-TE).

Additionally, the touch panel (TSP) may include touch pads that the touch circuit contacts in order to electrically connect the touch lines (TL) and the touch circuit.

The touch electrodes TE and the touch lines TL may exist on the same layer or on different layers.

Two or more touch electrodes forming one driving touch electrode line (Driving TE Line) are electrically connected. Two or more touch electrodes may be integrated and electrically connected, or may be electrically connected by a bridge.

Two or more touch electrodes (TE) forming one sensing touch electrode line (Sensing TE Line) are electrically connected. Two or more touch electrodes may be integrated and electrically connected, or may be electrically connected by a bridge.

In the example of Figure 3, two or more touch electrodes forming one driving touch electrode line (Driving TE Line) are integrated and electrically connected, and two or more touch electrodes forming one sensing touch electrode line (Sensing TE Line) The electrode (TE) is electrically connected by a bridge (BP).

Here, two or more touch electrodes forming one driving touch electrode line (Driving TE Line) are called driving touch electrodes (Driving TE). Two or more touch electrodes (TE) forming one sensing touch electrode line (Sensing TE Line) are called sensing touch electrodes (Sensing TE).

At least one touch line (TL) may be connected to each driving touch electrode line, and at least one touch line (TL) may be connected to each sensing touch electrode line.

At least one touch line (TL) connected to each driving touch electrode line is called a driving touch line (Driving TL). At least one touch line (TL) connected to each sensing touch electrode line is called a sensing touch line (Sensing TL).

One touch pad (TP) may be connected to each touch line (TL).

Referring to FIG. 3, each of the plurality of touch electrodes (TE) may, for example, be diamond-shaped when looking at the outline, and in some cases, may be rectangular (may include a square), Not only this, it can also come in various shapes.

Considering the display performance and touch performance of the display device 10, the shape of the touch electrode (TE) can be designed in various ways.

The touch panel (TSP) illustrated in FIG. 3 is shown to be long in the column direction, but may be designed to be long in the row direction, depending on the type (e.g., TV, monitor, mobile terminal, etc.) or design of the display device 10. .

The touch panel (TSP) according to embodiments may exist outside the display panel 100 (external type), or may exist inside the display panel 100 (built-in type).

When the touch panel (TSP) is an external type, the touch panel (TSP) and the display panel 100 may be manufactured separately through different panel manufacturing processes and then bonded.

When the touch panel (TSP) is a built-in type, the touch panel (TSP) and the display panel 100 can be manufactured together through a single panel manufacturing process.

When the touch panel (TSP) is a built-in type, the touch panel (TSP) can be viewed as a collection of multiple touch electrodes (TE). Here, the plate on which the plurality of touch electrodes TE are placed may be a dedicated substrate or a layer (eg, an encapsulation layer) that already exists in the display panel 100.

A plurality of touch electrodes (TE) and a plurality of touch lines (TL) may be disposed on the touch panel (TSP).

A plurality of touch electrodes (TE) may be positioned to correspond to the active area (A/A) of the display panel 100.

A plurality of touch lines TL may be located corresponding to the non-active area N/A of the display panel 100.

That is, the plurality of touch lines TL exist outside the touch electrode area (active area A/A or its corresponding area) where the plurality of touch electrodes TE are disposed.

The touch panel (TSP) may be built into or external to the display panel 100.

As described above, touch electrodes (TE) are disposed in the active area (A/A) of the display panel 100, and touch lines (TL) are disposed in the non-active area (N/A) of the display panel 100. ) is placed, it is possible to provide touch sensing that matches the screen display state.

Referring to FIG. 3, each of the plurality of touch lines TL is electrically connected to a touch circuit.

Among the plurality of touch lines (TL), each driving touch line (Driving TL) is a touch electrode whose one end is electrically connected to each driving channel of the touch circuit and whose other end is included in the corresponding driving touch electrode line (Driving TE Line). It is electrically connected to the outermost touch electrode disposed on the outermost part of the TE.

Among the multiple touch lines (TL), each sensing touch line (Sensing TL) is a touch electrode whose end is electrically connected to each sensing channel of the touch circuit and whose other end is included in the corresponding sensing touch electrode line (Sensing TE Line). It is electrically connected to the outermost touch electrode placed on the outermost side of (TE).

Figure 4 shows a touch electrode of a display panel according to embodiments of the present disclosure.

FIG. 4 is a diagram showing the correspondence between the area of a mesh-type touch electrode (TE) and the subpixel area in the display device 10 according to embodiments.

Referring to FIG. 4, in the display device 10 according to the embodiments, each of the plurality of touch electrodes (TE) is patterned in a mesh type to form an electrode metal (EM) with holes (OA). It can be. Here, the hole OA is also called an open area.

In the touch electrode (TE) formed by patterning the electrode metal (EM) into a mesh type, each of the holes (OA) may correspond to a light emitting portion of one or more subpixels.

For example, when the display panel 100 is an LCD panel, the light emitting part of the subpixel may include a pixel electrode or a color filter. When the display panel 100 is an OLED panel, the light emitting part of the subpixel may include an anode electrode of an organic light emitting diode (OLED), an organic light emitting layer, etc., and in some cases, may include a color filter, etc.

As described above, when viewed from a plan view, the electrode metal of the touch electrode (TE) is such that the light emitting portion of one or more subpixels exists in correspondence with each position of the open areas (OA) existing in the area of the touch electrode (TE). By patterning (EM), the luminous efficiency of the display panel 100 can be increased even if the electrode metal (EM) is made of an opaque material.

FIG. 5 is an equivalent circuit of a subpixel (SP) of the display device 10 according to embodiments of the present disclosure.

Referring to FIG. 5, each of the plurality of subpixels (SP) disposed on the display panel 100 of the display device 10 according to embodiments of the present disclosure includes a light emitting element (ED), a driving transistor (DRT), It may include a scan transistor (SCT) and a storage capacitor (Cst).

The light emitting device (ED) may include a pixel electrode (PE) and a common electrode (CE), and a light emitting layer (EL) located between the pixel electrode (PE) and the common electrode (CE). Here, the pixel electrode (PE) may be disposed in each subpixel (SP), and the common electrode (CE) may be commonly disposed in multiple subpixels (SP). For example, the pixel electrode (PE) may be an anode electrode, and the common electrode (CE) may be a cathode electrode. For another example, the pixel electrode (PE) may be a cathode electrode, and the common electrode (CE) may be an anode electrode. For example, the light emitting device (ED) may be an organic light emitting diode (OLED), a micro light emitting diode (micro LED), or a quantum dot light emitting device.

The driving transistor DRT is a transistor for driving the light emitting device ED, and may include a first node N1, a second node N2, and a third node N3.

The first node N1 of the driving transistor DRT may be a gate node of the driving transistor DRT and may be electrically connected to the source node or drain node of the scan transistor SCT. The second node N2 of the driving transistor DRT may be a source node or a drain node of the driving transistor DRT, and may also be electrically connected to the pixel electrode PE of the light emitting device ED. The third node N3 of the driving transistor DRT may be electrically connected to the driving voltage line DVL that supplies the driving voltage EVDD.

The scan transistor (SCT) is controlled by the scan signal (SCAN) and may be connected between the first node (N1) of the driving transistor (DRT) and the data line (DL). The scan transistor (SCT) is turned on or off according to the scan signal (SCAN) supplied from the gate line (GL), and connects the data line (DL) and the first node (N1) of the driving transistor (DRT). You can control the connection.

The scan transistor (SCT) is turned on by the scan signal (SCAN) having a turn-on level voltage, and transmits the data voltage (Vdata) supplied from the data line (DL) to the first node ( It can be passed on to N1).

Each of the driving transistor (DRT) and scan transistor (SCT) may be an n-type transistor or a p-type transistor.

The storage capacitor Cst may be connected between the first node N1 and the second node N2 of the driving transistor DRT. The storage capacitor (Cst) is charged with a charge corresponding to the voltage difference between both ends and plays the role of maintaining the voltage difference between both ends for a set frame time. Accordingly, the corresponding subpixel (SP) may emit light during a set frame time.

The storage capacitor (Cst) is not a parasitic capacitor (e.g. Cgs, Cgd), which is an internal capacitor that exists between the gate node and the source node (or drain node) of the driving transistor (DRT). ) may be an external capacitor intentionally designed outside of the capacitor.

The subpixel SP of the display device 10 according to embodiments of the present disclosure may further include one or more transistors or one or more capacitors.

FIG. 6 is a diagram briefly showing the display device 10 according to embodiments of the present disclosure.

Referring to FIG. 6 , a display device 10 according to embodiments of the present disclosure may include a display panel 100 that displays an image and a light receiving device 11 that receives light.

The display panel 100 may include a substrate and a plurality of insulating films, transistor layers, and light emitting device layers on the substrate.

The display panel 100 may include a plurality of subpixels for image display and various signal lines for driving the plurality of subpixels. Signal lines may include multiple data lines, multiple gate lines, multiple power lines, etc. Here, each of the plurality of subpixels may include a transistor located in the transistor layer and a light emitting device located in the light emitting device layer.

The display panel 100 may include a display area (DA) where an image is displayed and a non-display area (NDA) that is outside the display area (DA). A plurality of subpixels may be disposed in the display area DA. Various signal wires may be placed in the non-display area NDA and a driving circuit may be connected. The non-display area (NDA) may be bent and not visible from the front or may be obscured by a case (not shown) and is also called a bezel.

Referring to FIG. 6 , the display area DA may include a first display area DA1 and a second display area DA2.

The light receiving device 11 is a device that receives light and performs a designated function. For example, the light receiving device 11 may include one or more of a camera and a proximity sensor.

The light receiving device 11 is a device that needs to receive light, but may be located behind (below) the display panel 100. That is, the light receiving device 11 may be located on the opposite side of the viewing surface of the display panel 100. The light receiving device 11 is not exposed to the front of the display device 10. Therefore, when the user looks at the front of the display device 110, the light receiving device 11 is not visible.

The camera located behind (below) the display panel 100 is a front camera that takes pictures of the front, and can also be viewed as a camera lens.

Referring to FIG. 6 , the light receiving device 11 may be arranged to overlap the display area DA of the display panel 100 . That is, the light receiving device 11 may be located in the display area DA.

The area of the display area DA that overlaps with the light receiving device 11 is called the first display area DA1, and the remaining area is called the second display area DA2. According to this, the light receiving device 11 may be positioned overlapping the first display area DA1 within the display area DA. In other words, the light receiving device 11 can be viewed as being located in the first display area DA1 within the display area DA. The first display area DA1 may be circular, square, or polygonal depending on the shape of the light receiving device 11. The following embodiments have been described assuming that the light receiving device 11 is circular.

Since the first display area DA1 in the display area DA is an area that overlaps with the light receiving device 11, the transmittance of the first display area DA1 in the display area DA is an area that does not overlap with the light receiving device 11. It must be better than the transmittance of the second display area DA2.

In order to improve the transmittance of the first display area DA1 overlapping with the light receiving device 11, resolution, subpixel arrangement structure, number of subpixels per unit area, electrode structure, wiring structure, electrode arrangement structure, or wire arrangement structure, etc. The first display area DA1 and the second display area DA2 may be different from each other. Additionally, the sizes of subpixels located in the first display area DA1 may be different.

For example, the number of subpixels per unit area in the first display area DA1 may be smaller than the number of subpixels per unit area in the second display area DA2. According to this, the resolution of the first display area DA1 may be lower than the resolution of the second display area DA2.

In the display device 10 according to embodiments of the present disclosure, the camera, which is a light receiving device 11 located at the bottom of the display panel 100 without being exposed to the outside, is also called UDC (Under Display Camera).

The display device 10 according to embodiments of the present disclosure can have a smaller bezel, and the display panel 100 in the form of a notch does not need to be manufactured. In addition, design restrictions due to the light receiving device 11 are eliminated, thereby increasing the degree of freedom in design.

In the display device 10 according to the embodiments of the present disclosure, although the light receiving device 11 is located behind the display panel 100, the light receiving device 11 can normally receive light and perform its designated function normally. Must be able to. In addition, in the display device 10 according to embodiments of the present disclosure, although the light receiving device 11 is located behind the display panel 100 and overlaps the display area DA, the light receiving device 11 is It must be able to properly receive light and perform a given function, and it must be possible to display a normal image in the display area (DA).

Accordingly, the display device 10 according to embodiments of the present disclosure proposes a structure that can improve the transmittance of the first display area DA1 overlapping with the light receiving device 11 and increase the amount of light received.

FIG. 7 is a diagram illustrating a first transmissive area (TA) and a non-transmissive area (NTA) included in the first display area DA1 of the display panel 100 according to embodiments of the present disclosure, and FIG. 8 is a diagram illustrating a first transmissive area (TA) and a non-transmissive area (NTA) This is a diagram showing the first transmission area (TA), pixel area 112, and wiring area 113 included in the first display area DA1 of the display panel 100 according to embodiments of .

Referring to FIGS. 7 and 8 , the first display area DA1 is an area that overlaps the light receiving device 11 . The first display area DA1 may include a non-transmissive area (NTA) and a first transmissive area (TA).

Referring to FIGS. 7 and 8 , the first transmission area TA is a partial area included in the first display area DA1 and may be an area through which external light is transmitted to the light receiving device 11 . For example, the first transmission area TA may have a circular or elliptical shape, and may also be referred to as a hole area. Additionally, the first transmission area (TA) may have various sizes.

Referring to FIGS. 7 and 8 , the non-transmissive area NTA is a partial area included in the first display area DA1 and may be an area where the transistors of the transistor layer and the light-emitting devices of the light-emitting device layer are located.

Referring to Figures 7 and 8, the non-transmissive area (NTA) is. A pixel area 112 where light-emitting areas EA1, EA2, EA3, and EA4 of subpixels exist. It may include a wiring area 113 where the signal line SL is disposed.

Referring to FIGS. 7 and 8 , when the first transmissive area (TA) is surrounded by the non-transmissive area (NTA), the first display area (DA1) has a plurality of first transmissive areas ( TA) may be included.

9 shows a cross-sectional structure of a non-transmissive area (NTA) in the first display area (DA1) and a first transmissive area (TA) in the first display area (DA1) in the display device 10 according to embodiments of the present disclosure. ) and the cross-sectional structure of the second display area DA2.

Referring to FIG. 9 , the first display area DA1 of the display panel 100 may include a first transmissive area TA and a non-transmissive area NTA. The second display area DA2 of the display panel 100 can be viewed as a non-transmissive area NTA.

Referring to FIG. 9 , the stacked structure of the non-transmissive area (NTA) in the first display area (DA1), the stacked structure of the first transmissive area (TA) in the first display area (DA1), and the second display area (DA2) Let's look at the layered structure.

Referring to FIG. 9, the stacked structure of the second display area DA2 is as follows.

In the second display area DA2, a transistor layer (TRL) is disposed on the substrate (SUB), a planarization layer (PLN) is disposed on the transistor layer (TRL), and a light emitting device layer is on the planarization layer (PLN). (ED) is disposed, a first encapsulation layer (ENCAP) is disposed on the light emitting device layer (ED), a touch sensor layer (TSL) is disposed on the first encapsulation layer (ENCAP), and a touch sensor layer (TSL) ) A second encapsulation layer (PAC) may be disposed on the.

In the second display area DA2, transistors such as a driving transistor (DRT) and a scan transistor (SCT) of each subpixel (SP) may be disposed on the transistor layer (TRL), and various insulating films for forming the transistors may be formed. can be placed. Here, various insulating films may include organic films and inorganic films.

In the second display area DA2, various wires such as a data line DL, a gate line GL, and a driving voltage line DVL may be disposed on the transistor layer TRL.

In the second display area DA2, the light emitting device ED of each subpixel SP may be disposed in the light emitting device layer ED. Accordingly, in the second display area DA2, the pixel electrode CE, the light emitting layer EL, and the common electrode CE, which constitute the light emitting device ED, may be disposed in the light emitting device layer ED.

In the second display area DA2, the touch sensor TS may be disposed on the touch sensor layer TSL, and a touch buffer layer and a touch insulating layer necessary to form the touch sensor TS may be further disposed.

Referring to FIG. 9 , the stacked structure of the non-transmissive area (NTA) in the first display area (DA1) is the same as that of the second display area (DA2).

In the non-transmissive area NTA in the first display area DA1, the transistor layer TRL is disposed on the substrate SUB, the planarization layer PLN is disposed on the transistor layer TRL, and the planarization layer ( A light emitting device layer (ED) is disposed on the light emitting device layer (ED), a first encapsulation layer (ENCAP) is disposed on the light emitting device layer (ED), and a touch sensor layer (TSL) is disposed on the first encapsulation layer (ENCAP). And, the second encapsulation layer (PAC) may be disposed on the touch sensor layer (TSL).

Light-emitting devices (EDs) are vulnerable to moisture and oxygen. The first encapsulation layer (ENCAP) can prevent moisture or oxygen from penetrating, thereby preventing the light emitting device (ED) from being exposed to moisture or oxygen. The first encapsulation layer (ENCAP) may be composed of one layer, or may be composed of multiple layers.

In the non-transmissive area (NTA) in the first display area (DA1), transistors such as a driving transistor (DRT) and a scan transistor (SCT) of each subpixel (SP) may be disposed in the transistor layer (TRL), Various insulating films may be disposed to form transistors. Here, various insulating films may include organic films and inorganic films.

In the non-transmissive area NTA in the first display area DA1, various wires such as a data line DL, a gate line GL, and a driving voltage line DVL may be disposed on the transistor layer TRL.

In the non-transmissive area NTA in the first display area DA1, the light emitting element ED of each subpixel SP may be disposed in the light emitting element layer ED. Accordingly, in the second display area DA2, the pixel electrode CE, the light emitting layer EL, and the common electrode CE, which constitute the light emitting device ED, may be disposed in the light emitting device layer ED.

In the non-transmissive area (NTA) in the first display area (DA1), the touch sensor (TS) may be disposed in the touch sensor layer (TSL), and a touch buffer film, a touch insulating film, etc. required to form the touch sensor (TS). This may be further arranged.

Referring to FIG. 9, the stacked structure of the first transparent area TA in the first display area DA1 is as follows.

Referring to FIG. 9 , in the first transmission area (TA) in the first display area (DA1), a transistor layer (TRL) is disposed on the substrate (SUB), and a planarization layer (PLN) is formed on the transistor layer (TRL). is disposed, a light emitting element layer (ED) is disposed on the planarization layer (PLN), a first encapsulation layer (ENCAP) is disposed on the light emitting element layer (ED), and a touch is placed on the first encapsulation layer (ENCAP). A sensor layer (TSL) may be disposed, and a second encapsulation layer (PAC) may be disposed on the touch sensor layer (TSL).

In the first transmission area (TA) in the first display area (DA1), the transistor layer (TRL) includes transistors such as the driving transistor (DRT) and scan transistor (SCT) of each subpixel (SP) and various wirings. The light emitting device (ED) of each subpixel (SP) may be disposed in the light emitting device layer (ED), and in the second display area (DA2), the touch sensor layer (TSL) may be provided with a touch sensor (TS). ) can be placed.

In the first transmission area TA in the first display area DA1, transistors and wires are not disposed in the transistor layer TRL. However, in the first transmission area TA in the first display area DA1, various insulating films necessary for forming a transistor may be disposed on the transistor layer TRL. Here, various insulating films may include organic films and inorganic films.

In the first transmission area TA in the first display area DA1, the light emitting element ED of each subpixel SP is not disposed in the light emitting element layer ED. Accordingly, in the first transmission area TA in the first display area DA1, the pixel electrode CE, the light emitting layer EL, and the common electrode CE are not disposed in the light emitting element layer ED. In some cases, only a portion of the pixel electrode (CE), the light emitting layer (EL), and the common electrode (CE) may be disposed on the light emitting element layer (ED) in the first transmission area (TA) in the first display area (DA1). there is. For example, in the first transmission area TA in the first display area DA1, only the light emitting layer EL may be disposed on the light emitting device layer ED.

In the first transparent area (TA) in the first display area (DA1), the touch sensor (TS) is not disposed on the touch sensor layer (TSL). However, a touch buffer film and a touch insulating film may be disposed on the touch sensor layer TSL in the first transmission area TA in the first display area DA1.

Referring to FIG. 9 , among the metal material layer and the insulating material layer disposed in the non-transmissive area (NTA) of the first display area (DA1) and the second display area (DA2), the metal material layer is in the first display area (DA1). It is not placed in my first transmission area (TA). However, among the metal material layer and the insulating material layer disposed in the non-transmissive area (NTA) of the first display area (DA1) and the second display area (DA2), the insulating material layer is the first transparent area (NTA) in the first display area (DA1). It can be expanded and deployed to the area (TA).

Expressed differently, the metal material layer is disposed in the non-transmissive area (NTA) of the first display area (DA1) and the non-transmissive area (NTA) of the second display area (DA2), and the second display area (DA1) 1 Not placed in the transmission area (TA). The insulating material layer includes a non-transmissive area (NTA) of the first display area (DA1), a non-transmissive area (NTA) of the second display area (DA2), and a first transmissive area (TA) in the first display area (DA1). It can be commonly placed in .

Referring to FIG. 9 , the first transmission area (TA) in the first display area (DA1) of the display panel 100 may overlap the light receiving device 11.

External light is transmitted to the light receiving device 11 through the first transmission area (TA) in the first display area (DA1). Therefore, for normal operation of the light receiving device 11, the transmittance of the first transmission area TA in the first display area DA1 must be high.

Figure 10 is a cross-sectional view of the display device 10 according to embodiments of the present disclosure. FIG. 10 is an example of the cross-sectional structure of the non-transmissive area (NTA) and the first transmissive area (TA) in the first display area (DA1).

Referring to FIG. 10, both the non-transmissive area (NTA) and the first transmissive area (TA) included in the first display area (DA1) are basically comprised of a substrate (SUB), a transistor layer (TRL), and a planarization layer ( PLN), a light emitting device layer (EDL), an encapsulation layer (ENCAP), a touch sensor layer (TSL), and a protective layer (PAC).

First, with reference to FIG. 10 , the stacked structure of the non-transmissive area NTA included in the first display area DA1 will be described.

The substrate SUB may include a first substrate SUB1, an interlayer insulating film IPD, and a second substrate SUB2. The interlayer insulating film (IPD) may be located between the first substrate (SUB1) and the second substrate (SUB2). By composing the substrate (SUB) with a first substrate (SUB1), an interlayer insulating film (IPD), and a second substrate (SUB2), moisture penetration can be prevented. For example, the first substrate SUB1 and the second substrate SUB2 may be polyimide (PI) substrates and may include a plurality of polyimide layers.

The transistor layer (TRL) includes various patterns (ACT, SD1, GATE) for forming transistors such as the driving transistor (DRT), various insulating films (MBUF, ABUF1, ABUF2, GI, ILD1, ILD2, PAS0), and various Metal patterns (TM, GM, ML1, ML2) may be placed.

Below, the stacked structure of the transistor layer (TRL) will be described in more detail.

The multi-buffer layer MBUF may be disposed on the second substrate SUB2, and the first active buffer layer ABUF1 may be disposed on the multi-buffer layer MBUF.

A first metal layer ML1 and a second metal layer ML2 may be disposed on the first active buffer layer ABUF1. Here, the first metal layer ML1 and the second metal layer ML2 may function as a light shield.

A second active buffer layer ABUF2 may be disposed on the first metal layer ML1 and the second metal layer ML2. The active layer (ACT) of the driving transistor (DRT) may be disposed on the second active buffer layer (ABUF2).

A gate insulating layer (GI) may be disposed while covering the active layer (ACT).

The gate electrode (GATE) of the driving transistor (DRT) may be disposed on the gate insulating film (GI). At this time, the gate material layer GM may be disposed on the gate insulating film GI along with the gate electrode GATE of the driving transistor DRT at a position different from the formation position of the driving transistor DRT.

A first interlayer insulating layer ILD1 may be disposed while covering the gate electrode GATE and the gate material layer GM. A metal pattern TM may be disposed on the first interlayer insulating layer ILD1. The second interlayer insulating film ILD2 may be disposed while covering the metal pattern TM on the first interlayer insulating film ILD1.

Two first source-drain electrode patterns SD1 may be disposed on the second interlayer insulating layer ILD2. One of the two first source-drain electrode patterns (SD1) is the source node of the driving transistor (DRT), and the other is the drain node of the driving transistor (DRT).

The two first source-drain electrode patterns SD1 are connected to one side and the other side of the active layer ACT through contact holes in the second interlayer insulating film ILD2, the first interlayer insulating film ILD1, and the gate insulating film GI. can be connected to The part of the active layer (ACT) that overlaps with the gate electrode (GATE) is the channel area. One of the two first source-drain electrode patterns (SD1) is connected to one side of the channel region in the active layer (ACT), and the other one of the two first source-drain electrode patterns (SD1) is connected to the active layer (ACT) ) is connected to the other side of the channel area.

A passivation layer (PAS0) is disposed covering the two first source-drain electrode patterns (SD1).

A planarization layer (PLN) may be disposed on the transistor layer (TRL). The planarization layer (PLN) may include a first planarization layer (PLN1) and a second planarization layer (PLN2).

The first planarization layer (PLN1) may be disposed on the passivation layer (PAS0). A second source-drain electrode pattern SD2 may be disposed on the first planarization layer PLN1. The second source-drain electrode pattern SD2 may be connected to one of the two first source-drain electrode patterns SD1 (corresponding to the N2 node in FIG. 4) through a contact hole in the first planarization layer PLN1. there is.

The second planarization layer (PLN2) may be disposed while covering the second source-drain electrode pattern (SD2). The light emitting device layer (EDL) may be positioned on the second planarization layer (PLN2).

Let's look at the stacked structure of the light emitting device layer (EDL).

The pixel electrode (PE) is disposed on the second planarization layer (PLN2). The pixel electrode (PE) is electrically connected to the second source-drain electrode pattern (SD2) through a contact hole in the second planarization layer (PLN2).

A bank (BANK) is placed covering the pixel electrode (PE). The part of the bank (BANK) corresponding to the light emitting area of the subpixel (SP) may be open. Part of the pixel electrode (PE) may be exposed as the bank is open. The light emitting layer EL may be disposed in and around the open portion of the bank BANK. Accordingly, the light emitting layer EL may be disposed on the pixel electrode PE exposed through the open portion of the bank BANK.

A common electrode (CE) may be disposed on the light emitting layer (EL). For example, the common electrode (CE) may be a cathode electrode.

A light emitting element (ED) may be formed by a pixel electrode (PE), a light emitting layer (EL), and a common electrode (CE). The light emitting layer (EL) may include an organic layer.

An encapsulation layer (ENCAP) may be disposed on the above-described light emitting device layer (EDL).

The encapsulation layer (ENCAP) may have a single-layer structure or a multi-layer structure. For example, as shown in FIG. 10 , the encapsulation layer (ENCAP) may include a first encapsulation layer (PAS1), a second encapsulation layer (PCL), and a third encapsulation layer (PAS2).

The first encapsulation layer (PAS1) and the third encapsulation layer (PAS2) may be inorganic films, and the second encapsulation layer (PCL) may be an organic film. Among the first encapsulation layer (PAS1), the second encapsulation layer (PCL), and the third encapsulation layer (PAS2), the second encapsulation layer (PCL) is the thickest and can serve as a planarization layer.

The first encapsulation layer (PAS1) is disposed on the common electrode (CE) and closest to the light emitting element (ED). The first encapsulation layer (PAS1) may be formed of an inorganic insulating material capable of low-temperature deposition. For example, the first encapsulation layer (PAS1) may be silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiON), or aluminum oxide (Al ₂ O ₃ ). Since the first encapsulation layer (PAS1) is deposited in a low-temperature atmosphere, during the deposition process, the first encapsulation layer (PAS1) can prevent the light-emitting layer (EL) containing organic materials vulnerable to high-temperature atmospheres from being damaged.

The second encapsulation layer (PCL) may be formed to have a smaller area than the first encapsulation layer (PAS1). In this case, the second encapsulation layer (PCL) may be formed to expose both ends of the first encapsulation layer (PAS1). The second encapsulation layer (PCL) serves as a buffer to relieve stress between each layer due to bending of the display device 10, and may also serve to enhance planarization performance. For example, the second encapsulation layer (PCL) may be acrylic resin, epoxy resin, polyimide, polyethylene, or silicon oxycarbon (SiOC), and may be formed of an organic insulating material. For example, the second encapsulation layer (PCL) may be formed using an inkjet method.

For reference, the display panel 100 may have one or more dams at or near the end of the slope of the encapsulation layer (ENCAP) to prevent the encapsulation layer (ENCAP) from collapsing. One or more dams may exist at or near the boundary point between the marked area (DA) and the non-marked area (NDA).

The second encapsulation layer (PCL) containing organic matter can be located only on the inner side of the innermost primary dam. That is, the second encapsulation layer (PCL) may not exist on top of all dams. Alternatively, the second encapsulation layer (PCL) containing organic matter may be located on the upper part of at least the first dam among the first dam and the second dam. In other words, the second encapsulation layer (PCL) may be located by extending only to the upper part of the first dam. Alternatively, the second encapsulation layer (PCL) may be located by extending beyond the upper part of the primary dam to the upper part of the secondary dam.

The third inorganic encapsulation layer (PAS2) is formed on the substrate (SUB) on which the second encapsulation layer (PCL) is formed to cover the top and side surfaces of the second encapsulation layer (PCL) and the first encapsulation layer (PAS1), respectively. You can. The third encapsulation layer (PAS2) minimizes or blocks external moisture or oxygen from penetrating into the first inorganic encapsulation layer (PAS1) and the organic encapsulation layer (PCL). For example, the third encapsulation layer PAS2 is formed of an inorganic insulating material such as silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiON), or aluminum oxide (A(Al ₂ O ₃ )).

A touch sensor layer (TSL) may be disposed on the aforementioned encapsulation layer (ENCAP). Below, the stacked structure of the touch sensor layer (TSL) will be described.

A touch buffer film (T-BUF) may be disposed on the encapsulation layer (ENCAP), and a touch sensor (TS) may be disposed on the touch buffer film (T-BUF). The touch sensor (TS) may include touch sensor metals (TSM) and bridge metal (BRG) located in different layers. A touch interlayer insulating layer (T-ILD) may be disposed between the touch sensor metals (TSM) and the bridge metal (BRG).

For example, the touch sensor metals (TSM) include a first touch sensor metal (TSM), a second touch sensor metal (TSM), and a third touch sensor metal (TSM) arranged adjacent to each other. The first touch sensor metal (TSM) and the second touch sensor metal (TSM) must be electrically connected to each other, but a third touch sensor metal (TSM) is inserted between the first touch sensor metal (TSM) and the second touch sensor metal (TSM). When TSM) is present, the first touch sensor metal (TSM) and the second touch sensor metal (TSM) may be electrically connected through a bridge metal (BRG) located on another layer. The bridge metal (BRG) may be insulated from the third touch sensor metal (TSM) by a touch interlayer insulating layer (T-ILD).

When forming the touch sensor layer (TSL), chemicals used in the process (developer or etchant, etc.) or moisture from the outside may be generated. By placing a touch buffer film (T-BUF) and placing a touch sensor layer (TSL) on it, chemicals or moisture, etc., are prevented from penetrating into the light emitting layer (EL) containing organic materials during the manufacturing process of the touch sensor layer (TSL). You can prevent it. Accordingly, the touch buffer film (T-BUF) can prevent damage to the light emitting layer (EL), which is vulnerable to chemicals or moisture.

The touch buffer film (T-BUF) can be formed at a low temperature below a certain temperature (e.g. 100 degrees Celsius) and has a low temperature range of 1 to 3 to prevent damage to the light emitting layer (EL) containing organic materials vulnerable to high temperatures. It is made of an organic insulating material with a dielectric constant. For example, the touch buffer film (T-BUF) may be formed of an acrylic-based, epoxy-based, or siloxan-based material. As the display device 10 is bent, the encapsulation layer (ENCAP) may be damaged and the touch sensor metal located on the touch buffer film (T-BUF) may be broken. Even if the display device 10 is bent, the touch buffer film (T-BUF), which is made of an organic insulating material and has a flattening performance, may be damaged by damage to the encapsulation layer 350 and/or metal (TSM, BRG) constituting the touch sensor (TS). ) can prevent cracking.

The protective layer (PAC) may be disposed while covering the touch sensor (TS). The protective layer (PAC) may be an organic insulating film.

Below, the stacked structure of the first transparent area TA in the first display area DA1 will be described with reference to FIG. 10 .

Referring to FIG. 10, a substrate (SUB) and insulating films (MBUF, ABUF1, ABUF2, GI, ILD1, ILD2, PAS0, PLN (PLN1, PLN2) disposed in the non-transmissive area (NTA) in the first display area (DA1) ), BANK, ENCAP (PAS1, PCL, PAS2), and PAC) are equally arranged in the first transmission area (TA) in the first display area (DA1).

However, in addition to the insulating material in the non-transmissive area (NTA) in the first display area (DA1), a material layer with electrical properties (e.g., a metal material layer, a semiconductor layer, etc.) is used in the first display area (DA1). It may not be placed in the transmission area (TA).

For example, the metal material layers (ML1, ML2, GATE, GM, TM, SD1, SD2) and the semiconductor layer (ACT) related to the transistor are not disposed in the first transmission area (TA). The pixel electrode (PE) and the common electrode (CE) included in the light emitting device (ED) are not disposed in the first transmission area (TA). The light emitting layer EL may or may not be disposed in the first transmission area TA. The touch sensor metal (TSM) and bridge metal (BRG) included in the touch sensor (TS) are not disposed in the first transmission area (TA).

Since the first transmission area (TA) in the first display area (DA1) of the display panel 100 overlaps with the light receiving device 11, for normal operation of the light receiving device 11, the first display area (DA1) The transmittance of my first transmission area (TA) must be high.

To this end, in the display panel 100 of the display device 10 according to embodiments of the present disclosure, the first transmission area (TA) in the first display area (DA1) has a transmittance improvement structure (TIS: Transmittance Improvement Structure) You can have Below, the transmittance enhancement structure (TIS) will be described in detail.

Although not shown in the drawings, in the display device 10 according to embodiments of the present disclosure, a substrate (SUB) or a plurality of insulating films (MBUF, ABUF1, ABUF2, GI, ILD1, ILD2, PAS0, PLN1, PLN2, BANK) , PAS1, PCL, PAS2, PAC), at least one insulating film (e.g., PLN, PAC, etc.) has a transmittance enhancement structure (TIS) in a portion overlapping with the first transmission area (TA) in the first display area (DA1). ) can have.

Here, the transmittance enhancement structure (TIS) may include at least one hole or at least one uneven portion (also referred to as a step portion).

As described above, in the display device 10 according to embodiments of the present disclosure, a substrate (SUB) or a plurality of insulating films (MBUF, ABUF1, ABUF2, GI, ILD1, ILD2, PAS0, PLN1, PLN2, BANK, At least one insulating film (eg, PLN, PAC, etc.) among PAS1, PCL, PAS2, and PAC may have a variable thickness in a portion overlapping with the first transmission area (TA).

FIG. 11 is a diagram showing the arrangement of the lens CL and the light receiving device 11 in the display device 10 according to embodiments of the present disclosure, and FIG. 12 is a diagram showing the arrangement of the display device 10 according to embodiments of the present disclosure. ) is a diagram showing the process in which external light is received by the light receiving device 11 through the lens CL.

Referring to FIGS. 11 and 12 , a cover window member CG may be provided on the display panel 100 . A portion of the cover window member CG may be formed to be curved. Specifically, the cover window member CG may be formed to have a flat surface, and at least one end of the flat surface may be curved. In particular, both ends of the flat surface may be formed to be curved.

The display device 10 may include an adhesive layer (not shown) disposed between the display panel 100 and the cover window member CG. At this time, the adhesive layer may be formed in various shapes. For example, the adhesive layer (not shown) may include an adhesive film (OCA film, optical clear adhesive film) or an adhesive material. The cover window member (CG) may include various types of materials. For example, the cover window member CG may be made of glass or plastic. In particular, the cover window member CG is not limited to the above, and may include any material that can form a part to be curved.

The lens CL located inside the cover window member CG can focus the external light VR entering the light receiving device 11 from an external light source onto the light receiving device. In order to increase the concentration of light passing through the lens CL, the lens CL may be formed of a transparent organic material with a higher refractive index than the material forming the cover window member CG. Additionally, in some cases, the lens CL may be made of the same material as the cover window member CG, but is not limited thereto. The lens CL may be in the form of a convex lens to increase the concentration of external light VR, but is not limited thereto. The center of the lens CL and the center of the light receiving device may coincide. The shape of the lens CL may be circular in plan, but is not limited thereto. The area of the lens may be equal to or smaller than the area of the light receiving device.

The module device unit (MO) may be disposed behind the display panel and may include a light receiving device 11. A back plate (not shown) supporting the display panel 100 may be disposed in the module device unit (MO). The back plate may be disposed below the display panel 100 to supplement the rigidity of the display panel 100. The back plate is made of materials such as polyethylene terephthalate (PET), polyimide (PI), and polyethylene naphthalate (PEN), and may be made of a rigid plastic thin film. The back plate may include a heat dissipation layer and an adhesive layer 340. The heat dissipation layer (not shown) is used to provide a heat dissipation effect in order to respond to components that generate high temperatures, and may include a material with high thermal conductivity. For example, the heat dissipation layer (may include a metal with high thermal conductivity such as copper (Cu), aluminum (Al), or graphite). Additionally, since the heat dissipation layer 310 is conductive, it has a heat dissipation function. It can provide a grounding function along with.

Referring to FIG. 12, in the display area DA, a portion located below the lens CL and where light passing through the lens CL touches the display area DA is referred to as the third display area DA3. In other words, in the display area DA of the display panel 100, the area through which the light passing through the lens CL is transmitted is called the third display area DA3. Light passing through the lens CL may be condensed in the third display area DA3. The third display area DA3 may be included in the display area DA. As will be described later, the third display area DA3 may be included in the first display area DA1 that overlaps the light receiving device 11.

When the area of the external light VR hitting the display area is the same as the area of the light receiving device 11, the area of the third display area DA3 and the area of the first display area DA1 may be the same.

When the external light (VR) passes through the lens and is focused, the area where the external light (VR) touches the display area becomes smaller than the area without the lens (CL), so in this case, the area of the third display area (DA3) is It may be smaller than the area of the first display area DA1. When the third display area DA3 exists in the display panel 100, the pixel arrangement and structure of the first display area DA1 may be the same as the pixel arrangement and structure formed in the second display area DA2.

When the area of the third display area DA3 is smaller than the area of the first display area DA1, the third display area DA3 may be an area included within the first display area DA1. For example, when the first display area DA1 and the third display area DA3 are each circular, the first display area DA1 and the third display area DA3 are concentric circles with the same center and different direct angles. You can.

The second transparent area TAA may be disposed at the center of the first display area DA1 and the third display area DA3. The second transmission area (TAA) may have the same stacked structure and transmittance enhancement structure (TIS) as the first transmission area (TA). The area of the second transmission area (TAA) may be larger than the area of the first transmission area (TA) in order to increase the amount of light focused on the light receiving device.

When external light VR enters the lens CL, the lens CL may have a focal length that focuses the display panel. When the focus is set within the display panel, the area where the external light VR touches the display panel becomes smaller than the area of the first display area DA1. As previously described, the area of the third display area DA3 may be smaller than the area of the first display area DA1.

UDC (Under Display Camera) refers to a light receiving device 11 located at the bottom of the display panel 100 and not exposed to the outside. Even though the light receiving device 11 such as UDC is located behind the display panel 100 and overlaps the display area (DA), the light receiving device 11 must be able to receive light normally and display area (DA) The video must be able to be displayed normally. When the lens CL is positioned within the cover window member CG according to an embodiment of the present invention, the focus of the external light VR is increased compared to the case where the lens CL is not in the cover window, thereby increasing the camera image quality of the display device. This may increase.

A display device adopting UDC (Under Display Camera) allows external light (VR) to pass through the display panel, such as in the first display area (DA1), in order to increase the amount of external light (VR) received by the light receiving device 11. It has an area that can be used. The number of pixels per unit area of the first display area DA1 may be smaller than the number of pixels per unit area of the second display area DA2 for the transmission of external light VR, and image quality may be poor. According to one embodiment of the present invention, the external light VR passing through the lens CL only needs to pass through the third display area DA3, which has a smaller area than the first display area DA1. ), the arrangement or structure of only the pixels within the area needs to be different from that of the second display area DA2, thereby reducing the area of the area with poor image quality. For example, the area of the third display area DA3 may be 1/100 times or less than the area of the lens CL.

According to an embodiment of the present invention, the diameter of the lens CL is CCL, the diameter of the light receiving device 11 is L1, the shortest distance from the upper surface of the cover window member CG to the lens CL is L2, and the cover window The thickness of the member CG is L3, the thickness of the display panel 100 is L4, the thickness of the thickest part of the lens CL is L5, the shortest distance from the lens CL to the top surface of the display panel 100 is L6, The shortest distance from the bottom of the display panel 100 to the top of the light receiving device 11 can be defined as L7.

Referring to FIGS. 11 and 12 , when the light receiving device 11 is a camera, the object 1200 located in front of the display panel 100 must be recognized as an image 1200r by the light receiving device 11. To this end, the light coming from the front of the display panel 100 passes through the lens CL, is condensed in the third display area DA3, and is received by the light receiving device 11, so that the light receiving device 110 produces an image. (1200r) can be recognized. Here, the third display area DA3 may be the location of focus.

Referring to FIGS. 11 and 12 , in order for the light receiving device 11 to accurately recognize the image 1200r, the light passing through the lens CL must be focused in the third display area DA3. For this purpose, the refractive index of the lens CL, the focal distance f between the lens CL and the third display area DA3, and the image distance between the third display area DA3 and the light receiving device 11 (b) , and the size of the light receiving element 11 must be precisely designed.

The focal distance f between the lens CL and the third display area DA3 may correspond to (L5)/2 + L6+ (L4)/2. Here, L5 is the thickness of the thickest part of the lens CL, L6 is the shortest distance from the lens CL to the top surface of the display panel 100, and L4 is the thickness of the display panel 100. It is assumed that the curved surface of the front and back of the lens CL is the same. Additionally, the vertical center point of the display panel 100 is assumed to be the focus.

The image distance b between the third display area DA3 and the light receiving device 11 may correspond to (L5)/2 + L6 + L4 + L7. Here, L5 is the thickness of the thickest part of the lens CL, L6 is the shortest distance from the lens CL to the top surface of the display panel 100, L4 is the thickness of the display panel 100, and L7 is the display panel. This is the shortest distance from the back (lower surface) of 100 to the upper surface of the light receiving device 11. It is assumed that the position where the image 1200r is formed is the front (upper surface) of the light receiving element 11.

The imaging distance of the light receiving device 11 may be a value (a+b) that is the sum of the object distance (a) and the image distance (b) from the lens CL to the object 1200. According to optical principles, the object distance (a), focal distance (f), and image distance (b) must satisfy Equation 1 below.

[Equation 1]

1/f = 1/a+ 1/b

In Equation 1, f is the focal distance, a is the object distance, and b is the image distance.

For example, when the focal length (f) is 0.425 mm and the image distance (b) is 0.75 mm, when using a convex lens type lens (CL), the light receiving device 11 is displayed in the third display area DA3. An object 1200 that is 1 mm or more away from the focal point can be recognized. That is, the light receiving device 11 can recognize the object 1200 whose object distance (a) is 1 mm or more. As the object distance (a) increases, the angle of view may increase. The size of the light receiving element 11 including the image sensor can be changed. The size at which the light receiving element 11 can accommodate light may be up to 0.66 inches.

13 shows the positions of the first to third display areas DA1, DA2, and DA3 and the second transparent area TAA in the display panel according to embodiments of the present disclosure, and the positions of the first to third display areas DA1, DA2, and DA3 and the second transparent area TAA. This diagram shows the arrangement and structure of the light emitting areas (EA1, EA2, EA3, and EA4) of the subpixels included in each of the display areas (DA1, DA2, and DA3).

Referring to FIG. 13 , the first display area DA1 may be an area that overlaps the light receiving device 11 . The second display area DA2 may be an area located outside the first display area DA1. The third display area DA3 may be the same or substantially the same as the first display area DA1, or may be an area included in the first display area DA1.

As in the example of FIG. 13, when the area of the third display area DA3 is smaller than the area of the first display area DA1, the third display area DA3 is included inside the first display area DA1. It could be an area. For example, when each of the first display area DA1 and the third display area DA3 is circular, the first display area DA1 and the third display area DA3 are concentric circles with a center and different direct angles. You can.

Referring to FIG. 13 , the first display area DA1 may include a plurality of first transparent areas TA. The third display area DA3, which is the same as or included in the first display area DA1, may also include a plurality of first transparent areas TA.

A plurality of first transmission areas TA are scattered and distributed in the first display area DA1. The plurality of first transparent areas TA are scattered in the third display area DA3.

In the first display area DA1, the distribution or area of the plurality of first transparent areas TA may be uniform. In the third display area DA3, the distribution or area of the plurality of first transparent areas TA may be uniform.

Alternatively, in the first display area DA1, the and/or areas of the plurality of first transmission areas TA may be non-uniform. For example, in the first display area DA1, as it moves toward the center, more first transmission areas TA may be distributed or the area of the first transmission areas TA may increase.

In the third display area DA3, the distribution and/or area of the plurality of first transparent areas TA may be non-uniform. For example, in the third display area DA3, as it moves toward the center, more first transmission areas TA may be distributed or the area of the first transmission areas TA may increase.

Referring to FIG. 13 , the first display area DA1 may include a second transparent area TAA. That is, the third display area DA3 may include the second transparent area TAA.

The second transparent area TAA may be located in the center of the first display area DA1 and the center of the third display area DA3. For example, when the first display area DA1 and the third display area DA3 are concentric circles, the center of the first display area DA1 and the center of the third display area DA3 may coincide.

Referring to FIG. 13 , for example, the second transmission area TAA may have an area larger than the area of each of the plurality of first transmission areas TA1. For example, the first transmissive area TA1 having the largest area among the plurality of first transmissive areas TA1 included in the first display area DA1 and the third display area DA3 is divided into a second transmissive area (TA1). It can also be called TAA).

Referring to FIG. 13 , the pixels placed in the first display area DA1 may appear larger in size than the pixels placed in the second display area DA2 because the lens CL is placed on the top. Additionally, due to the characteristics of the lens, the size of the pixels placed at the center of the first display area DA1 appears larger than the pixels placed at the edges, resulting in a visual sense of heterogeneity. To solve this problem, the size of the pixels in the first display area DA1 becomes smaller toward the center of the first display area DA1, so that not only do the pixels within the first display area DA1 appear the same in size, but , it can be made to appear the same size as the pixels placed in the second display area DA2. Likewise, the size of the pixels in the third display area DA3 becomes smaller toward the center of the third display area DA1, so that not only do the pixels in the third display area DA3 appear to be the same in size, but also the pixels in the third display area DA3 appear to have the same size. It can be made to appear the same size as the pixels placed in the display area DA2. The pixel size reduction rate may vary depending on the thickness of the lens, the refractive index of the lens, and the thickness of the display panel. The first transparent area TA and the second transparent area TAA may be disposed in the first display area DA1, and in some cases, may be disposed only in the third display area DA3.

FIG. 14 is a diagram illustrating the first transparent area TA, the pixel area 112, and the wiring area 113 included in the third display area DA3 of the display panel 100 according to embodiments of the present disclosure. .

Referring to FIG. 14, the area of the first transmission area TA disposed in the third display area DA3 is the same, and the area of the emission areas EA1, EA2, EA3, and EA4 of the subpixels is the same as the area of the third display area DA3. It can become smaller toward the center of (DA3).

FIG. 15 is another diagram showing the first transparent area TA, the pixel area 112, and the wiring area 113 included in the third display area DA3 of the display panel 100 according to the embodiments of the present disclosure. am.

Referring to FIG. 15, the area of the emission areas (EA1, EA2, EA3, and EA4) of the subpixels decreases toward the center of the third display area (DA3), thereby widening the space where the transmission area can be placed, thereby increasing the area of the third display area (DA3). The area of the first transmission area (TA) disposed in (DA3) may be designed to increase toward the center of the third display area (DA3).

As the area of the first transmission area (TA) increases, the transmittance of external light (VR) passing through the lens CL and entering the light receiving device 11 increases, thereby improving the image quality of the camera.

There may be a second transparent area (TAA) at the center of the third display area (DA3). The second transparent area TAA may have an area larger than the first transparent area TA disposed in the third display area DA3.

The embodiments of the present disclosure described above are briefly described as follows.

A display device according to embodiments of the present disclosure includes a substrate, a display area, and a plurality of subpixels provided in the display area, where the display area includes a display panel including a first display area and a second display area, and a display panel behind the display panel. It may include a light receiving device positioned to overlap the first display area, and a cover window member positioned in front of the display panel and covering the display panel.

The first display area may include a pixel area, a wiring area, a first transmission area, and a second transmission area.

The number of subpixels provided in the second display area may be different from the number of subpixels provided in the first display area per unit area.

The cover window member may include a lens positioned to overlap the light receiving device within the cover window member.

The first display area may have the same or smaller area than the lens.

The lens may be a convex lens type.

The second display area may be located outside the first display area, and the third display area may be an area included in the first display area.

The second transparent area may be disposed at the center of the first display area.

The area of the second transmission area may be larger than the area of the first transmission area.

The size of subpixels provided in the first display area may become smaller as it moves toward the center of the first display area.

The area of the first transmission area may increase toward the center of the first display area.

The area of the lens may be 100 times or more than the area of the second transmission area.

A display device according to embodiments of the present disclosure includes a display panel including a substrate, a display area, and a plurality of subpixels provided in the display area, and the display area includes a first display area, a second display area, and a third display area. , It may include a light receiving device located behind the display panel and overlapping with the first display area, and a cover window member located in front of the display panel and covering the display panel.

The first display area and the third display area may include a pixel area, a wiring area, and a first transmission area.

The third display area may be included in the first display area and have a smaller area.

The plurality of subpixels provided in the third display area may have different shapes from the plurality of subpixels provided in the first display area.

The cover window member may include a lens positioned to overlap the light receiving device within the cover window member.

The third display area may have an area smaller than the lens.

The second display area may be located outside the first display area, and the third display area may be an area included in the first display area.

The second transmissive area is disposed at the center of the third display area, and the area of the second transmissive area may be larger than the area of the first transmissive area.

The size of subpixels provided in the first display area may become smaller as it moves toward the center of the first display area.

The area of the transmission area may increase toward the center of the first display area.

The area of the lens may be 100 times or more than the area of the second transmission area.

A display panel according to embodiments of the present disclosure may include a substrate, a display area, a plurality of subpixels provided in the display area, and a cover window member located on the front surface.

The display area may include different first display areas and second display areas.

The first display area may include a pixel area, a wiring area, a first transmission area, and a second transmission area.

The cover window member may include a lens through which external light is transmitted.

The lens may overlap the first display area.

The first display area may include an area that overlaps with the lens and an area that does not overlap with the lens.

In the area that overlaps the lens, the size of the plurality of subpixels may be smaller than the size of the plurality of subpixels in the area that does not overlap the lens.

In the embodiments of the present disclosure described above According to this, a display device and display panel with improved camera image quality can be provided by including a lens in the cover window member area overlapping with the light receiving device to increase the amount of light received by the light receiving device.

In addition, according to embodiments of the present disclosure, the arrangement and structure of the pixel area of the subpixels arranged in the first display area or the third display area are modified compared to the second display area, and the first transparent area or the second display area is modified. By modifying the arrangement and structure of the transmission area, light concentration is increased and the second display area and first display area and a display device and display panel that reduce visual heterogeneity in the third display area.

Although the embodiments of the present specification have been described in more detail with reference to the accompanying drawings, the present specification is not necessarily limited to these embodiments, and various modifications may be made without departing from the technical spirit of the present specification. . Accordingly, the embodiments disclosed in this specification are not intended to limit the technical idea of the present specification, but rather to explain it, and the scope of the technical idea of the present specification is not limited by these embodiments. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

10: display device 11: light receiving device
100: display panel 101: display driving circuit
102: touch circuit 110: substrate
DA1: First display area DA2: Second display area
DA3: Third display area TA: First transmission area
NTA: non-transmissive area TAA: second transmissive area
111: subpixel 112: pixel area
113: wiring area 120: transistor layer
121: first display wiring 122: second display wiring
130: Planarization layer 140: Light emitting device layer
141: light emitting device 141a: pixel electrode
141b: common electrode 142: bank layer
142a: dam 150: first encapsulation layer
151: first insulating film 160: touch sensor layer
161: Third display wiring 162: Fourth display wiring
163: first touch wire 164: second touch wire
165: touch electrode 170: second encapsulation layer
171: second insulating film

Claims (10)

a display panel including a substrate, a display area, and a plurality of subpixels provided in the display area, wherein the display area includes a first display area and a second display area;
a light receiving device overlapping the first display area at the rear of the display panel; and
Includes a cover window member located in front of the display panel,
The first display area includes a plurality of pixel areas, a plurality of wiring areas, and a plurality of first transmission areas,
The display device wherein the cover window member includes a lens that overlaps the light receiving device. According to paragraph 1,
A display device wherein the plurality of subpixels provided in the second display area have a different number per unit area than the plurality of subpixels provided in the first display area. According to paragraph 1,
The display device wherein the first display area has an area equal to or smaller than that of the lens. According to paragraph 1,
A display device, wherein the lens is a convex lens. According to paragraph 1,
The display panel further includes a third display area,
The second display area is located outside the first display area,
The third display area is an area included in the first display area,
The display device wherein the third display area has a smaller area than the lens. According to clause 5,
A display device wherein the plurality of subpixels provided in the third display area have different shapes from the plurality of subpixels provided in the first display area excluding the third display area and the plurality of subpixels provided in the second display area. . According to claim 1 or 5,
The first display area further includes a second transparent area,
The second transparent area is disposed at the center of the third display area,
A display device wherein an area of the second transmissive area is larger than an area of the first transmissive area. According to claim 1 or 5,
A display device in which the size of subpixels provided in the first display area becomes smaller toward the center of the first display area. According to claim 1 or 5,
A display device wherein the area of the first transmission area increases toward the center of the first display area. According to paragraph 1,
The display device wherein the area of the lens is 100 times or more than the area of the second transmission area.

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