Display device
By dividing multiple regions on the display panel, each region contains pixels of different viewing angles, and using a combination of multiple light emitting diodes and optical components, the problem of difficult to control the boundary visibility of content areas in the prior art is solved, and power consumption is controlled when brightness increases, improving display effect and energy efficiency.
Patent Information
- Application Number
- CN202410767465.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2023-12-27
- Filing Date
- 2024-06-14
- Publication Date
- 2025-06-27
AI Technical Summary
When providing wide viewing angle content, existing display devices are difficult to reduce boundary visibility between content areas with narrow viewing angles, while power consumption is difficult to control when brightness increases.
By dividing multiple regions on the display panel, each region containing pixels of different viewing angles, using a combination of multiple light emitting diodes and optical components, display of different viewing angles is achieved, and power consumption is reduced by optimizing the drive current.
Minimize boundary visibility between wide viewing angles and narrow viewing angles, while reducing power consumption when increasing brightness, improving display effect and energy efficiency.
Smart Images

Figure CN120224935A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to a display device, and more particularly to, for example but not limited to, a display device capable of controlling the viewing angle. Background Art
[0002] With the progress of modern social technologies, display devices have been used in various forms to provide information to users. Display devices include liquid crystal display devices (LCDs), plasma display devices (PDPs), field emission display devices (FEDs), organic light-emitting display devices (OLEDs), micro-LED (micro light-emitting diode) display devices, and the like. Display devices are also included in various electronic devices that receive user input and use advanced technologies to provide information in response to the received input, as well as electronic display panels that unidirectionally transmit visual information.
[0003] For example, a display device can be included in a vehicle to provide various information to the driver and passengers of the vehicle. However, the display device in the vehicle needs to appropriately display content so as not to interfere with the driving of the vehicle. For example, the display device needs to limit the display of content that may potentially interfere with the driver's driving attention during vehicle driving.
[0004] The descriptions provided in the discussion of the background art section should not be regarded as prior art merely because they are mentioned in or related to that section. The discussion in the background art section may include information describing one or more aspects of the subject technology, and the description in this section does not limit the present invention. Summary of the Invention
[0005] Therefore, the inventors of the present disclosure recognized the above limitations or problems and other limitations related to the related art, and conducted various experiments to implement a display device capable of controlling the viewing angle.
[0006] One object to be achieved by the present disclosure is to provide a display device capable of reducing or minimizing the visibility of the boundary between a first region that provides content with a wide viewing angle and a second region that provides content with a wide or narrow viewing angle.
[0007] Another object to be achieved by the present disclosure is to provide a display device capable of reducing or minimizing power consumption due to increased brightness.
[0008] The objects of the present disclosure are not limited to the above objects, and those skilled in the art can clearly understand other objects not mentioned from the following description.
[0009] A display device according to an exemplary embodiment of the present disclosure includes a display panel, which is divided into a first region including a plurality of first pixels and a plurality of second pixels and a second region including a plurality of third pixels adjacent to the first region in a direction opposite to a first direction. Wherein, each of the plurality of first pixels includes a first light-emitting diode, a second light-emitting diode, a first optical member that emits light generated from the first light-emitting diode at a first viewing angle, and a second optical member that emits light generated from the second light-emitting diode at the first viewing angle. And each of the plurality of second pixels includes a third light-emitting diode, a fourth light-emitting diode, a third optical member that emits light generated from the third light-emitting diode at the first viewing angle, and a fourth optical member that emits light generated from the fourth light-emitting diode at a second viewing angle lower than the first viewing angle. And each of the plurality of third pixels includes a fifth light-emitting diode, a sixth light-emitting diode, a fifth optical member that emits light generated from the fifth light-emitting diode at the first viewing angle, and a sixth optical member that emits light generated from the sixth light-emitting diode at the second viewing angle. In addition, the plurality of second pixels are arranged in corresponding regions of the first region with different pixel densities.
[0010] Other detailed contents of the exemplary embodiment are included in the detailed description and the drawings.
[0011] According to an exemplary embodiment of the present disclosure, content can be displayed with a wide viewing angle in the first region of the display panel. Moreover, content can be displayed with a wide viewing angle or a narrow viewing angle in the second region.
[0012] According to an exemplary embodiment of the present disclosure, pixels having the same lens structure as the pixels provided in the second region are also provided in the first region. Therefore, the visibility of the boundary between the first region and the second region can be minimized.
[0013] According to an exemplary embodiment of the present disclosure, the first region is driven to allow all the light-emitting diodes respectively included in the plurality of pixels to emit light. The plurality of pixels are arranged in the first region that provides content with a wide viewing angle. Therefore, when content is provided with a wide viewing angle and the same data signal is written simultaneously, the brightness can be increased.
[0014] According to an exemplary embodiment of the present disclosure, the power consumption for increasing the brightness can be reduced or minimized.
[0015] The effects according to the present disclosure are not limited to the above-exemplified contents, and more various effects are included in the present disclosure.
[0016] It should be understood that the foregoing general description and the following detailed description of the present disclosure are both exemplary and explanatory, and are intended to provide further explanation of the inventive concept claimed. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and other aspects, features, and other advantages of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
[0018] Figure 1 An example of a display device according to an exemplary embodiment of the present disclosure is shown;
[0019] Figure 2 is a functional block diagram showing a display device according to an exemplary embodiment of the present disclosure;
[0020] Figure 3 is a circuit diagram showing an example of a pixel circuit of a display device according to an exemplary embodiment of the present disclosure;
[0021] Figure 4 is a circuit diagram showing an example of a pixel circuit of a display device according to an exemplary embodiment of the present disclosure;
[0022] Figure 5A and Figure 5B are for explaining Figure 4 the waveform diagram of the pixel circuit;
[0023] Figure 6 and Figure 7 are cross-sectional views of a display device according to an exemplary embodiment of the present disclosure;
[0024] Figure 8 is a circuit diagram showing an example of a first pixel of a display device according to an exemplary embodiment of the present disclosure;
[0025] Figure 9 is a circuit diagram showing an example of a second pixel of a display device according to an exemplary embodiment of the present disclosure;
[0026] Figure 10 is a circuit diagram showing an example of a third pixel of a display device according to an exemplary embodiment of the present disclosure;
[0027] Figure 11 An example of a display panel of a display device according to an exemplary embodiment of the present disclosure is shown;
[0028] Figure 12 Shows Figure 11 an example of a first region of the display panel;
[0029] Figure 13AShows an example of driving a display device according to an exemplary embodiment of the present disclosure in a first mode;
[0030] Figure 13B Shows an example of driving a display device according to an exemplary embodiment of the present disclosure in a second mode;
[0031] Figure 14 Shows Figure 12 An example of driving a first region of
[0032] Figure 15 Shows Figure 12 Another example of driving a first region of
[0033] Figure 16 Shows Figure 11 Another example of a first region of a display panel of
[0034] Figure 17 Shows Figure 11 Another example of a first region of a display panel of ; and
[0035] Figure 18 Shows Figure 11 Another example of a first region of a display panel of
[0036] Throughout the drawings and the detailed description, unless otherwise specified, the same reference numerals should be understood to refer to the same elements, features, and structures. For clarity, illustration, and convenience, the relative dimensions and depictions of these elements may be exaggerated. Detailed Description
[0037] Now, reference will be made in detail to embodiments of the present disclosure, examples of which are illustrated in the drawings. The progress of the described processing steps and / or operations is an example; however, the order of the steps and / or operations is not limited to the order presented herein and may be changed as known in the art, except for steps and / or operations that must occur in a specific order. The names of the individual elements used in the following description may be chosen solely for the convenience of writing the specification and may thus be different from the names used in actual products.
[0038] By referring to the exemplary embodiments described below in detail together with the accompanying Figure 1 drawings, the advantages and features of the present disclosure and the methods for achieving the advantages and features will become clear. However, the present disclosure is not limited to the exemplary embodiments disclosed herein but will be implemented in various forms. The exemplary embodiments are provided only by way of example so that those skilled in the art can fully understand the disclosure content of the present disclosure and the scope of the present disclosure. Therefore, the present disclosure will be defined only by the scope of the appended claims.
[0039] The shapes, sizes, ratios, angles, quantities, etc. shown in the drawings used to describe the exemplary embodiments of the present disclosure are merely examples, and the present disclosure is not limited thereto. Throughout the specification, the same reference numerals generally denote the same elements. In addition, in the following description of the present disclosure, detailed explanations of known related technologies may be omitted to avoid unnecessarily obscuring the subject matter of the present disclosure. Terms such as "comprising", "having", and "consisting of" used herein are generally intended to allow the addition of other components, unless the term is used together with the term "only". Any reference to the singular may include the plural unless otherwise expressly stated. Any implementation described herein as an "example" is not necessarily to be construed as preferred or superior to other implementations.
[0040] When describing positional relationships, when the positional relationship between two parts is described as, for example, "above", "over", "below", or "next to", one or more other parts may be provided between the two parts unless more restrictive terms such as "exactly" or "directly" are used. When describing temporal relationships, for example, when the chronological order is described as "after", "subsequent", "then", or "before", discontinuous cases may be included unless more restrictive terms such as "exactly", "immediately", or "directly" are used.
[0041] In the description of temporal relationships, for example, the temporal precedence relationships such as "after", "subsequent", "before", etc. between two events may have another event occurring therebetween unless it is specified as "immediately after", "immediately subsequent", or "immediately before".
[0042] Although terms such as "first", "second", etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from other components. Thus, the first component to be mentioned below may be the second component in the technical concept of the present disclosure.
[0043] When referring to an element or layer "on" or "connected to" another element or layer, it should be understood to mean that the element or layer may be directly on or directly connected to the other element or layer, or there may be intermediate elements or layers. In addition, when referring to an element "on" another element or layer or "under" another element, it should be understood to mean that the elements may be arranged in direct contact with each other, or may be arranged not to be in direct contact with each other.
[0044] The expression "a first element, a second element, and / or a third element" should be understood to mean one of the first, second, and third elements, or any or all combinations of the first, second, and third elements. For example, A, B, and / or C can mean only A, only B, only C, any one or some combinations of A, B, and C, or all of A, B, and C.
[0045] The features of the various exemplary embodiments of the present disclosure can be partially or completely attached or combined with each other, and can be interlocked and operated in various ways technically, and the embodiments can be executed independently or in association with each other.
[0046] The term "at least one" should be understood to include any and all combinations of one or more of the related listed items. For example, the meaning of "at least one of a first element, a second element, and a third element" includes the combination of all three listed elements, the combination of any two of the three elements, and each individual element, the first element, the second element, or the third element.
[0047] In the description of an embodiment, when a structure is described as being "on or above" or "under or below" another structure, such description should be interpreted to include the case where these structures are in contact with each other and the case where a third structure is disposed between them. The dimensions and thicknesses of each element shown in the figures may be given only for convenience of description, and the embodiments of the present disclosure may not be limited thereto.
[0048] The features of the various embodiments of the present disclosure can be interconnected or combined partially or wholly, and can interoperate with each other and be technically driven in various ways as can be fully understood by those skilled in the art. The embodiments of the present disclosure can be executed independently of each other, or can be executed together in a mutually dependent relationship.
[0049] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the exemplary embodiments belong. It will also be understood that terms (such as those defined in a common dictionary) should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein. For example, the term "part" or "unit" can apply to, for example, a separate circuit or structure, an integrated circuit, a computational block of a circuit device, or any structure that those of ordinary skill in the art would understand to be configured to perform the described function.
[0050] In addition, when referring to any dimensions, relative sizes, etc., even if no relevant description is specified, the numerical values or corresponding information (e.g., levels, ranges, etc.) for components or features should be considered to include the tolerance or error ranges that may be caused by various factors (e.g., process factors, internal or external influences, noise, etc.). In addition, the term "may" fully encompasses all the meanings of the term "can".
[0051] Exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. For ease of description, the scale of each element shown in the drawings is different from the actual scale and is thus not limited to the scale shown in the drawings.
[0052] Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
[0053] Figure 1 An example of a display device according to an exemplary embodiment of the present disclosure is shown.
[0054] Reference Figure 1 , the display device 100 may be disposed on at least a part of the instrument panel of a vehicle. The instrument panel of the vehicle may include components disposed on the front surfaces of the front row seats (e.g., driver seat, passenger seat) in the vehicle. For example, input components (e.g., air conditioner, audio system, navigation system) for operating various functions inside the vehicle may be disposed on the instrument panel of the vehicle.
[0055] The display device 100 may be disposed on the instrument panel of the vehicle and may be used as an input unit for operating at least some of the various functions of the vehicle. The display device 100 may provide various information related to the vehicle, such as driving information of the vehicle (e.g., current speed, remaining fuel amount, mileage) and information related to components of the vehicle (e.g., degree of damage of vehicle tires).
[0056] The display device 100 may be disposed to extend across the driver seat and the front passenger seat, which are the front row seats in the vehicle. The users of the display device 100 may include the passengers on the front passenger seat in the vehicle and the driver of the vehicle. Both the driver and the passengers may use the display device 100.
[0057] Figure 1 A part of the display device 100 may be shown. Figure 1 The display panel among the various components of the display device 100 may be shown. Specifically, for example, Figure 1 the shown display device 100 may represent at least a part of the display area and the non-display area of the display panel. Other components of the display device 100 may be installed inside the vehicle (or at least a part of the vehicle).
[0058] Figure 2is a functional block diagram showing a display device according to an exemplary embodiment of the present disclosure.
[0059] An electroluminescent display device can be applied to the display device according to an exemplary embodiment of the present disclosure. The electroluminescent display device can be an organic light-emitting diode display device, a quantum dot light-emitting diode display device, or an inorganic light-emitting diode display device, but is not limited thereto.
[0060] Referring to Figure 2 , the display device 100 may include a display panel PN, a data driver DD, a gate driver GD, and a timing controller TD, but is not limited thereto. The display device 100 may further include a mode controller MS and a mode selection unit MD.
[0061] The display panel PN may generate an image to be provided to a user. For example, the display panel PN may generate and display an image to be provided to the user through a plurality of pixels PX each including a plurality of pixel circuits.
[0062] The plurality of pixels PX may include first pixels, second pixels, third pixels, etc. provided in each region of the display panel PN, but is not limited thereto. Details of the first pixels, second pixels, third pixels, and their setting relationships will be described below with reference to Figures 8 to 12 describe the details of the first pixels, second pixels, third pixels, and their setting relationships.
[0063] The data driver DD, the gate driver GD, and the timing controller TD may respectively provide signals for operating the pixel PX through signal lines. For example, the signal lines for providing signals for operating the pixel PX may include a plurality of data lines DL and a plurality of gate lines GL, but are not limited thereto. As an example, one or more additional signal lines (such as a light emission control line, a sensing line, etc.) may also be included.
[0064] The mode selection unit MD may respectively provide signals for controlling the driving mode of the pixel PX through signal lines. For example, the signal lines for providing signals for controlling the driving mode of the pixel PX may include a plurality of selection signal lines SSL.
[0065] The plurality of data lines DL may be provided in a column direction and may include a plurality of lines connected to the pixels PX provided in one column direction. In addition, the plurality of gate lines GL are provided in a row direction and may include a plurality of lines connected to the pixels PX provided in one row direction. However, the arrangement of the plurality of data lines DL and the plurality of gate lines GL is not limited thereto.
[0066] In addition, the plurality of selection signal lines SSL are provided in a row direction and may include a plurality of lines connected to the pixels PX provided in one row direction, but are not limited thereto.
[0067] A plurality of selection signal lines SSL may include a plurality of selection signal lines, such as a first selection signal line to a sixth selection signal line, but are not limited thereto. In this document, the first selection signal line and the second selection signal line are commonly connected to a first pixel included in the plurality of pixels PX. In addition, the third selection signal line and the fourth selection signal line are commonly connected to a second pixel included in the plurality of pixels PX. In addition, the fifth selection signal line and the sixth selection signal line are commonly connected to a third pixel included in the plurality of pixels PX. Details of the connection relationships of the first selection signal line to the sixth selection signal line will be described below with reference to Figures 8 to 12 Details of the connection relationships of the first selection signal line to the sixth selection signal line will be described below with reference to
[0068] In some exemplary embodiments, the display device 100 may further include a power supply unit. In this case, signals for operating each pixel PX may be provided by connecting the power supply unit to the power lines of the display panel PN. In some exemplary embodiments, the power supply unit may supply power to the data driver DD and the gate driver GD. The data driver DD and the gate driver GD may be driven based on the power supplied from the power supply unit. However, the present disclosure is not limited to the above exemplary embodiments.
[0069] For example, the data driver DD may apply data signals to the pixels PX through a plurality of data lines DL respectively, and the gate driver GD may apply gate signals to the pixels PX through a plurality of gate lines GL respectively. In addition, the power supply unit may supply a power supply voltage to the pixels PX through power supply voltage supply lines respectively. However, the present disclosure is not limited to the above examples.
[0070] The timing controller TD may control the data driver DD and the gate driver GD. For example, the timing controller TD may realign the digital video data input from the outside according to the resolution of the display panel PN, and may provide the realigned digital video data to the data driver DD. However, the present disclosure is not limited thereto.
[0071] The data driver DD may convert the digital video data input from the timing controller TD into an analog data voltage based on a data control signal, and may provide the analog data voltage to the plurality of data lines DL. However, the present disclosure is not limited thereto.
[0072] The gate driver GD can generate a scan signal and a light emission signal (or a light emission control signal) based on a gate control signal. For example, the gate driver GD can include a scan driver and a light emission signal driver. The scan driver can generate a scan signal in a row-sequential manner to drive at least one scan line connected to each pixel row, and can supply the scan signal to the scan line. The light emission signal driver can generate a light emission signal in a row-sequential manner to drive at least one light emission signal line connected to each pixel row, and can supply the light emission signal to the light emission signal line. However, the present disclosure is not limited thereto.
[0073] In some exemplary embodiments, the gate driver GD can be disposed on the display panel DP by an in-panel gate (GIP) method, but is not limited thereto. For example, the gate driver GD can be divided into a plurality of gate drivers GD, and then respectively disposed on at least two side surfaces of the display panel PN.
[0074] The mode controller MS can control the mode selection unit MD. For example, the mode controller MS can generate a mode selection signal MSS for controlling the mode selection unit MD based on a mode signal input according to the driving mode of the display device 100, and can supply the mode selection signal MSS to the mode selection unit MD. The mode selection unit MD can supply a selection signal to a plurality of selection signal lines SSL in response to the mode selection signal MSS. However, the present disclosure is not limited thereto.
[0075] The display panel PN can include a display area and a non-display area disposed around or adjacent to the display area.
[0076] The display area of the display panel PN can include a plurality of pixels PX disposed in a row direction and a column direction. For example, the plurality of pixels PX can be disposed at intersections between a plurality of data lines DL and a plurality of gate lines GL. However, the present disclosure is not limited thereto.
[0077] Each pixel PX can include a plurality of sub-pixels that emit light of different colors. For example, each pixel PX can be implemented using three sub-pixels for blue, red, and green light, but is not limited thereto. In some exemplary embodiments, the pixel PX can also include sub-pixels for implementing light of a specific color (e.g., white light, visible light, or even invisible light). However, the present disclosure is not limited thereto.
[0078] In the pixel PX, the area that implements blue can be referred to as a blue sub-pixel, the area that implements red can be referred to as a red sub-pixel, and the area that implements green can be referred to as a green sub-pixel. But is not limited thereto. As an example, sub-pixels that emit light of other colors (e.g., magenta, cyan, or yellow) are also possible.
[0079] Each of the plurality of pixels PX may include a first type of light-emitting diode and a second type of light-emitting diode that emit light of the same color.
[0080] Each of the plurality of pixels PX may include at least one of a first type of lens and a second type of lens that refract light from the first type of light-emitting diode and the second type of light-emitting diode in a specific direction. In addition, the term "lens" is used herein for ease of description and may also be defined as an "optical member".
[0081] For example, the first type of lens may be disposed in a lens region that provides light to a first range to form a first viewing angle. In addition, the second type of lens may be disposed in a lens region that provides light to a second range to form a second viewing angle, but is not limited thereto. The first range may be wider than the second range. Therefore, the viewing angle of each of the plurality of pixels PX may be limited by the first type of lens and the second type of lens.
[0082] Details will be described below with reference to Figure 6 and Figure 7 the details of the first type of lens and the second type of lens.
[0083] The non-display area may be provided along the periphery of the display area. Various components for driving the pixel circuits provided in the pixels PX may be provided in the non-display area. For example, at least a part of the gate driver GD may be provided in the non-display area. The non-display area may be referred to as a border area.
[0084] The display panel PN may be divided into a plurality of regions. In other words, the display panel PN may include a plurality of regions. For example, the display panel PN may include a first region in which a plurality of first pixels and a plurality of second pixels among the plurality of pixels PX are provided. In addition, the display panel PN may include a second region in which a plurality of third pixels among the plurality of pixels PX are provided. Each of the plurality of first pixels and the plurality of second pixels provided in the first region and the plurality of third pixels provided in the second region may include the same or substantially the same pixel circuit, but is not limited thereto.
[0085] For example, each of the plurality of first pixels and the plurality of second pixels provided in the first region of the display panel PN and the plurality of third pixels provided in the second region may include a driver circuit, a selection circuit, and a first type of light-emitting diode and a second type of light-emitting diode that emit light of the same or substantially the same color, but is not limited thereto and may include more or fewer elements than shown.
[0086] In this document, the driver circuit may be used to provide a driving current to the first type of light-emitting diode and the second type of light-emitting diode based on signals provided from the data driver DD and the gate driver GD. However, the present disclosure is not limited thereto.
[0087] In addition, the selection circuit can be used to control the generation of one of the first driving current flowing through the first type of light-emitting diodes and the second driving current flowing through the second type of light-emitting diodes based on the selection signal provided by the mode selection unit MD. In other words, the selection circuit can control the formation of the current path of the first driving current to allow the first type of light-emitting diodes to emit light. Alternatively, the selection circuit can control the formation of the current path of the second driving current to allow the second type of light-emitting diodes to emit light. However, the present disclosure is not limited thereto. The selection circuit can be included in the driver circuit. However, the present disclosure is not limited thereto.
[0088] Hereinafter, for the sake of convenience of description, when the current path of the first driving current is formed and the first type of light-emitting diodes emit light, the pixel PX driven in the first state is defined. In addition, when the current path of the second driving current is formed and the second type of light-emitting diodes emit light, the pixel PX driven in the second state is defined.
[0089] The selection circuit can be used to control the generation of all of the first driving current flowing through the first type of light-emitting diodes and the second driving current flowing through the second type of light-emitting diodes based on the selection signal provided by the mode selection unit MD. In other words, the selection circuit can control the formation of the current path of the first driving current and the current path of the second driving current to allow both the first type of light-emitting diodes and the second type of light-emitting diodes to emit light. However, the present disclosure is not limited thereto. The selection circuit can be included in the driver circuit.
[0090] Hereinafter, for the sake of convenience of description, when each of the current paths of the first driving current and the second driving current is formed and both the first type of light-emitting diodes and the second type of light-emitting diodes emit light, the pixel PX driven in the third state is defined.
[0091] Each pixel of the plurality of first pixels provided in the first region of the display panel PN may include two first type of lenses, which are configured to refract the light emitted from the first type of light-emitting diodes and the light emitted from the second type of light-emitting diodes in specific directions respectively. The two first type of lenses may include, for example, a first lens and a second lens. For example, the light emitted from the first type of light-emitting diodes included in each of the plurality of first pixels provided in the first region of the display panel PN can be refracted by the first lens of the first type of lenses in a specific direction. In addition, the light emitted from the second type of light-emitting diodes included in each of the plurality of first pixels provided in the first region of the display panel PN can be refracted by the second lens of the first type of lenses in a specific direction.
[0092] Each of the plurality of second pixels disposed in the first region of the display panel PN and the plurality of third pixels disposed in the second region may include a first type of lens configured to refract light emitted from a first type of light-emitting diode in a specific direction, such as a third lens or a fifth lens. In addition, each of the plurality of second pixels disposed in the first region of the display panel PN and the plurality of third pixels disposed in the second region may include a second type of lens configured to refract light emitted from a second type of light-emitting diode in a specific direction, such as a fourth lens or a sixth lens. For example, light emitted from a first type of light-emitting diode included in each of the plurality of second pixels disposed in the first region of the display panel PN may be refracted in a specific direction by the third lens, which is a first type of lens. In addition, light emitted from a second type of light-emitting diode included in each of the plurality of second pixels disposed in the first region of the display panel PN may be refracted in a specific direction by the fourth lens, which is a second type of lens. As another example, light emitted from a first type of light-emitting diode included in each of the plurality of third pixels disposed in the second region of the display panel PN may be refracted in a specific direction by the fifth lens, which is a first type of lens. In addition, light emitted from a second type of light-emitting diode included in each of the plurality of third pixels disposed in the second region of the display panel PN may be refracted in a specific direction by the sixth lens, which is a second type of lens. However, the present disclosure is not limited thereto.
[0093] Details of the plurality of regions (e.g., the first region and the second region) included in the display panel PN and the first to third pixels disposed in the first region and the second region will be described below with reference to Figures 8 to 18 the description.
[0094] In some exemplary embodiments, each region of the display panel PN may be set to extend across the driver's seat and the front passenger seat, which are the front seats in a vehicle, as referred to above with reference to Figure 1 the description. In addition, each region of the display panel PN may provide various information to the driver and the passenger. For example, the first region of the display panel PN is disposed on the driver's seat side and provides information such as driving speed, RPM, engine temperature, and fuel level to the driver. In addition, the second region of the display panel PN is disposed on the front passenger seat side and provides entertainment functions and seat information to the passenger on the front passenger seat. In addition, the first region of the display panel PN may further include a central panel region disposed between the driver's seat and the front passenger seat. However, the definition of the regions is for ease of description, and the first region and the second region of the display panel PN may be defined differently according to the design. However, the present disclosure is not limited thereto.
[0095] In addition, when the display panel PN is used as described above with reference toFigure 1 When describing the vehicle, at least some of the multiple regions included in the display panel PN need to be limited in viewing angle according to the user's needs. For example, the image displayed in the second region that provides entertainment functions and seat information to the passenger in the front passenger seat may interfere with the driver's driving of the vehicle. Therefore, it may be necessary to limit the viewing angle of the image displayed in the second region according to the user's needs.
[0096] More specifically, referring to Figure 2 , the display device 100 can use the mode controller MS and the mode selection unit MD to control the viewing angle of at least some of the multiple regions included in the display panel PN. However, the present disclosure is not limited thereto.
[0097] The mode controller MS can generate a mode selection signal MSS for controlling the display panel PN to be driven in the first mode or the second mode according to the driving mode of the display device 100, and provide the mode selection signal MSS to the mode selection unit MD. Herein, the first mode refers to a mode in which multiple regions (e.g., the first region and the second region) of the display panel PN are driven in a shared mode. In addition, the second mode refers to a mode in which at least some of the multiple regions (e.g., the second region) of the display panel PN are driven in a privacy mode.
[0098] Reference will be made to Figure 13A and Figure 13B to describe in detail the configuration in which the mode controller MS controls the display panel PN to be driven in the first mode or the second mode according to the driving mode of the display device 100.
[0099] Figure 3 is a circuit diagram showing an example of a pixel circuit of a display device according to an exemplary embodiment of the present disclosure.
[0100] In addition, Figure 3 shows an example of a pixel circuit SPC corresponding to each of the multiple pixels PX of the display device 100.
[0101] Referring to Figure 3 , the pixel circuit SPC may include a driver circuit DC, a selection circuit SC, and multiple light-emitting diodes EDa and EDb. The embodiment is not limited thereto. As an example, at least one of the above components may be omitted, and / or one or more additional components may be further included.
[0102] As an example, the driver circuit DC may include a driving transistor DT, a switching transistor ST, and a first capacitor C1.
[0103] The driving transistor DT and the first capacitor C1 can be connected to the switching transistor ST. The first electrode of the driving transistor DT can be connected to the first power supply line that provides the first power supply voltage VDD (for example, a high-potential power supply voltage). The gate of the driving transistor DT can be connected to the switching transistor ST. The second electrode of the driving transistor DT can be connected to the selection circuit SC.
[0104] The gate of the switching transistor ST can be connected to the gate line GL and be provided with a gate signal. The switching transistor ST can be turned on or off by the gate signal. The first electrode of the switching transistor ST can be connected to the data line DL. The second electrode of the switching transistor ST can be connected to the driving transistor DT. In this case, in response to the switching transistor ST being turned on, the data signal can be provided to the gate of the driving transistor DT through the switching transistor ST.
[0105] The first capacitor C1 can be provided between the gate and the second electrode of the driving transistor DT. The first capacitor C1 can maintain the signal applied to the gate of the driving transistor DT, such as a data signal, during one frame period.
[0106] The selection circuit SC can include a first selection transistor TP1 that forms a current path for the first driving current flowing through the first type of light-emitting diode EDa. In addition, the selection circuit SC can include a second selection transistor TP2 that forms a current path for the second driving current flowing through the second type of light-emitting diode EDb. However, the configuration of the selection circuit SC is not limited thereto.
[0107] The first selection transistor TP1 can be provided between the driver circuit DC and the first type of light-emitting diode EDa. The gate of the first selection transistor TP1 can be connected to the first type selection signal line that provides the first selection signal Ss. The first selection transistor TP1 can be turned on or off by the first selection signal Ss. If the first selection signal Ss is provided to the gate of the first selection transistor TP1 when driving the pixel circuit SPC in the first state or the third state, the first selection transistor TP1 can be turned on. Thus, a current path for the first driving current flowing through the first type of light-emitting diode EDa can be formed. In this case, the first type of light-emitting diode EDa can emit light.
[0108] The second selection transistor TP2 can be disposed between the driver circuit DC and the second type of light-emitting diode EDb. The gate of the second selection transistor TP2 can be connected to a second type of selection signal line that provides a second selection signal Ps. The second selection transistor TP2 can be turned on or off by the second selection signal Ps. If the second selection signal Ps is provided to the gate of the second selection transistor TP2 when driving the pixel circuit SPC in the second state or the third state, the second selection transistor TP2 can be turned on. Thus, a current path for a second driving current flowing through the second type of light-emitting diode EDb can be formed. In this case, the second type of light-emitting diode EDb can emit light.
[0109] The first type of light-emitting diode EDa can be connected between a first selection transistor TP1 that is turned on or off by a first selection signal Ss and a second power supply line that provides a second power supply voltage VSS (e.g., a low-potential power supply voltage). The second type of light-emitting diode EDb can be connected between a second selection transistor TP2 that is turned on or off by a second selection signal Ps and the second power supply line that provides the second power supply voltage VSS (e.g., a low-potential power supply voltage).
[0110] In this case, the first type of light-emitting diode EDa or the second type of light-emitting diode EDb can be connected to another component of the pixel circuit SPC, such as a driving transistor DT of the driver circuit DC, according to a driving mode. Herein, the driving mode can be specified by a user's input or can be determined when a predetermined condition is satisfied.
[0111] For example, the driving mode can include a first mode in which multiple regions of the display panel PN described above Figure 1 are driven in a shared mode. In addition, the driving mode can include a second mode in which at least some regions (e.g., a second region) of the multiple regions of the display panel PN are driven in a privacy mode.
[0112] Figure 3 The multiple transistors DT, ST, TP1, and TP2 of Figure 3 can include at least one of amorphous silicon, polycrystalline silicon, and oxide semiconductors (such as IGZO). The embodiments are not limited thereto. As an example,
[0113] Figure 4 is a circuit diagram showing an example of a pixel circuit of a display device according to an exemplary embodiment of the present disclosure.
[0114] In addition, Figure 4 an example of a pixel circuit SPC_1 that can be applied to Figure 3 is shown.
[0115] Referring to Figure 4 , at least some of the plurality of transistors included in the pixel circuit SPC_1 can be n-type transistors or p-type transistors. In the case of p-type transistors, the low-level voltage of each drive signal represents the voltage for turning on the transistor, and the high-level voltage of each drive signal can represent the voltage for turning off the transistor. In the case of n-type transistors, the low-level voltage of each drive signal represents the voltage for turning off the transistor, while the high-level voltage of each drive signal can represent the voltage for turning on the transistor.
[0116] In this document, the low-level voltage can correspond to a predetermined voltage lower than the high-level voltage. For example, the low-level voltage can include a voltage in the range of -8V to -12V, but is not limited thereto. The high-level voltage can correspond to a predetermined voltage higher than the low-level voltage. For example, the high-level voltage can include a voltage in the range of 12V to 16V, but is not limited thereto. In some exemplary embodiments, the low-level voltage can be referred to as the first voltage, and the high-level voltage can be referred to as the second voltage. In this case, the first voltage can have a value lower than the second voltage.
[0117] The first electrode or the second electrode of the transistor to be described below can refer to the source or the drain. However, terms such as the first electrode and the second electrode are used to distinguish each electrode and do not limit what each electrode corresponds to. In addition, for each electrode, the first electrode may not refer to the same electrode.
[0118] Referring to Figure 4 , the pixel circuit SPC_1 can include a driver circuit DC_1, a selection circuit SC_1, and a plurality of light-emitting diodes EDa and EDb.
[0119] The driver circuit DC_1 can include a driving transistor DT, a plurality of switching transistors ST1 to ST5, and a second capacitor C2.
[0120] The driving transistor DT can control the driving current to be applied to the plurality of light-emitting diodes EDa and EDb according to the source-gate voltage. The driving transistor DT can include a first electrode (such as the source) connected to a first power line providing a first power supply voltage VDD, a gate connected to a second node N2, and a second electrode (such as the drain) connected to a third node N3.
[0121] The first switching transistor ST1 can apply a data signal from the data line DL to the first node N1. The first switching transistor ST1 may include a first electrode (such as a source) connected to the data line DL, a second electrode (such as a drain) connected to the first node N1, and a gate connected to the first scan signal line SL1 to which the first scan signal SCAN1 is applied. The first switching transistor ST1 can be turned on or off by the first scan signal SCAN1. Therefore, the first switching transistor ST1 can apply the data signal from the data line DL to the first node N1 in response to the first scan signal SCAN1. For example, the first switching transistor ST1 can apply the data signal from the data line DL to the first node N1 in response to the first scan signal SCAN1 having a low level as the conductive level.
[0122] The second switching transistor ST2 can diode-connect the gate and the drain of the driving transistor DT. The second switching transistor ST2 may include a first electrode (such as a drain) connected to the second node N2, a second electrode (such as a source) connected to the third node N3, and a gate connected to the second scan signal line SL2 to which the second scan signal SCAN2 is applied. The second switching transistor ST2 can be turned on or off by the second scan signal SCAN2. Therefore, the second switching transistor ST2 can diode-connect the gate and the drain of the driving transistor DT in response to the second scan signal SCAN2. For example, the second switching transistor ST2 can diode-connect the gate and the drain of the driving transistor DT in response to the second scan signal SCAN2 having a low level as the conductive level.
[0123] The third switching transistor ST3 can apply a reference voltage Vref to the first node N1. The third switching transistor ST3 may include a first electrode (such as a source) connected to the reference voltage line providing the reference voltage Vref, a second electrode (such as a drain) connected to the first node N1, and a gate connected to the emission signal line EL to which the emission signal EM is applied. The third switching transistor ST3 can be turned on or off by the emission signal EM. Therefore, the third switching transistor ST3 can apply the reference voltage Vref to the first node N1 in response to the emission signal EM. For example, the third switching transistor ST3 can apply the reference voltage Vref to the first node N1 in response to the emission signal EM having a low level as the conductive level.
[0124] The fourth switching transistor ST4 can apply a reference voltage Vref to the anode of the first type of light-emitting diode EDa. The fourth switching transistor ST4 may include a first electrode (such as a source) connected to a reference voltage line providing the reference voltage Vref, a second electrode (such as a drain) connected to the anode of the first type of light-emitting diode EDa, and a gate connected to a second scan signal line SL2 to which a second scan signal SCAN2 is applied. The fourth switching transistor ST4 can be turned on or off by the second scan signal SCAN2. Accordingly, the fourth switching transistor ST4 can apply the reference voltage Vref to the anode of the first type of light-emitting diode EDa in response to the second scan signal SCAN2. For example, the fourth switching transistor ST4 can apply the reference voltage Vref to the anode of the first type of light-emitting diode EDa in response to the second scan signal SCAN2 having a low level as a conductive level.
[0125] The fifth switching transistor ST5 can apply a reference voltage Vref to the anode of the second type of light-emitting diode EDb. The fifth switching transistor ST5 may include a first electrode (such as a source) connected to a reference voltage line providing the reference voltage Vref, a second electrode (such as a drain) connected to the anode of the second type of light-emitting diode EDb, and a gate connected to a second scan signal line SL2 to which a second scan signal SCAN2 is applied. The fifth switching transistor ST5 can be turned on or off by the second scan signal SCAN2. Accordingly, the fifth switching transistor ST5 can apply the reference voltage Vref to the anode of the second type of light-emitting diode EDb in response to the second scan signal SCAN2. For example, the fifth switching transistor ST5 can apply the reference voltage Vref to the anode of the second type of light-emitting diode EDb in response to the second scan signal SCAN2 having a low level as a conductive level.
[0126] The second capacitor C2 may include a first electrode connected to the first node N1 and a second electrode connected to the second node N2. That is, one electrode of the second capacitor C2 may be connected to the gate of the driving transistor DT, and the other electrode of the second capacitor C2 may be connected to the first switching transistor ST1. When at least one of the plurality of light-emitting diodes EDa and EDb emits light, the second capacitor C2 can store a predetermined voltage to maintain a constant voltage level at the gate of the driving transistor DT. However, the present disclosure is not limited thereto.
[0127] The selection circuit SC_1 may include a first selection transistor TP1 for forming a current path of a first driving current flowing through the first type of light-emitting diode EDa. In addition, the selection circuit SC_1 may include a second selection transistor TP2 for forming a current path of a second driving current flowing through the second type of light-emitting diode EDb. However, the present disclosure is not limited thereto.
[0128] The first selection transistor TP1 can be disposed between the driver circuit DC_1 and the first type of light-emitting diode EDa. The gate of the first selection transistor TP1 can be connected to a first type of selection signal line that provides a first selection signal Ss. The first selection transistor TP1 can be turned on or off by the first selection signal Ss. If the first selection signal Ss is provided to the gate of the first selection transistor TP1 when driving the pixel circuit SPC_1 in the first state or the third state, the first selection transistor TP1 can be turned on. Thus, a current path for a first drive current flowing through the first type of light-emitting diode EDa can be formed. In this case, the first type of light-emitting diode EDa can emit light.
[0129] The second selection transistor TP2 can be disposed between the driver circuit DC_1 and the second type of light-emitting diode EDb. The gate of the second selection transistor TP2 can be connected to a second type of selection signal line that provides a second selection signal Ps. The second selection transistor TP2 can be turned on or off by the second selection signal Ps. If the second selection signal Ps is provided to the gate of the second selection transistor TP2 when driving the pixel circuit SPC_1 in the second state or the third state, the second selection transistor TP2 can be turned on. Thus, a current path for a second drive current flowing through the second type of light-emitting diode EDb can be formed. In this case, the second type of light-emitting diode EDb can emit light.
[0130] The first type of light-emitting diode EDa can be connected between the first selection transistor TP1 that is turned on or off by the first selection signal Ss and a second power supply line that provides a second power supply voltage VSS (e.g., a low-potential power supply voltage). The second type of light-emitting diode EDb can be connected between the second selection transistor TP2 that is turned on or off by the second selection signal Ps and the second power supply line that provides the second power supply voltage VSS (e.g., a low-potential power supply voltage). However, the present disclosure is not limited thereto.
[0131] In this case, the first type of light-emitting diode EDa or the second type of light-emitting diode EDb can be connected to another component of the pixel circuit SPC_1, such as a driving transistor DT of the driver circuit DC_1, depending on the driving mode. Herein, the driving mode can be specified by a user input or can be determined when a predetermined condition is satisfied.
[0132] Figure 5A and Figure 5B are waveform diagrams for illustrating Figure 4 the pixel circuit.
[0133] In addition, Figure 5A a waveform diagram for illustrating an example of driving the pixel circuit SPC_1 in the first state is shown. Figure 5BA waveform diagram for explaining an example of driving the pixel circuit SPC_1 in the second state is shown.
[0134] Referring to Figures 4 to 5B , when the pixel circuit SPC_1 is driven in the first state, only the first type of light-emitting diode EDa can emit light. In addition, when the pixel circuit SPC_1 is driven in the second state, only the second type of light-emitting diode EDb can emit light. Additionally, the first selection transistor TP1 can be turned on by a low-level first selection signal Ss, and the second selection transistor TP2 can be turned off by a high-level second selection signal Ps. Herein, as Figure 5A shown, the second selection signal Ps for controlling the light emission of the second type of light-emitting diode EDb (i.e., the second selection signal Ps for forming the current path of the second drive current) can be output only at a high level as the cut-off level to allow only the first type of light-emitting diode EDa to emit light in the first state. Additionally, the first selection transistor TP1 can be turned off by a high-level first selection signal Ss, and the second selection transistor TP2 can be turned on by a low-level second selection signal Ps. Furthermore, as Figure 5B shown, the first selection signal Ss for controlling the light emission of the first type of light-emitting diode EDa (i.e., the first selection signal Ss for forming the current path of the first drive current) can be output only at a high level as the cut-off level to allow only the second type of light-emitting diode EDb to emit light in the second state.
[0135] Specifically, the operation of the pixel circuit SPC_1 in the first state will be described with reference to Figure 4 and Figure 5A . A low-level second scan signal SCAN2, a low-level first selection signal Ss, and a low-level light emission signal EM can be output in the initial period. The second switch transistor ST2, the fourth switch transistor ST4, and the fifth switch transistor ST5 can be turned on by the low-level second scan signal SCAN2. Additionally, the first selection transistor TP1 can be turned on by the low-level first selection signal Ss. Furthermore, the third switch transistor ST3 can be turned on by the low-level light emission signal EM.
[0136] The voltage of the first node N1 can be initialized to the reference voltage Vref by the turned-on third switching transistor ST3. The voltage of the anode of the first type of light-emitting diode EDa can be initialized to the reference voltage Vref by the turned-on fourth switching transistor ST4. In addition, the voltage of the anode of the second type of light-emitting diode EDb can be initialized to the reference voltage Vref by the turned-on fifth switching transistor ST5. In addition, the driving transistor DT can be diode-connected by the turned-on second switching transistor ST2, and the gate and drain of the driving transistor DT can be short-circuited. Therefore, the driving transistor DT can operate like a diode. In addition, the reference voltage Vref transmitted to the anode of the first type of light-emitting diode EDa through the turned-on fourth switching transistor ST4 can be transmitted to the third node N3 and the second node N2 through the turned-on first selection transistor TP1 and second selection transistor TP2. Therefore, the third node N3 and the second node N2 can be initialized to the reference voltage Vref. However, the present disclosure is not limited thereto.
[0137] Then, a low-level first scan signal SCAN1 and a low-level second scan signal SCAN2 can be output during the sampling period. In addition, during the sampling period, the first selection signal Ss and the light-emitting signal EM can be output from a low level to a high level. When the high-level light-emitting signal EM is output, the third switching transistor ST3 can be turned off. In addition, the first switching transistor ST1 can be turned on by the low-level first scan signal SCAN1. In addition, the second switching transistor ST2 can be turned on by the low-level second scan signal SCAN2. Therefore, the data signal can be transmitted to the first node N1. In addition, the driving transistor DT can be diode-connected by the turned-on second switching transistor ST2, and the voltage difference between the first power supply voltage VDD and the threshold voltage can be sampled and then provided to the second node N2.
[0138] In addition, the first scan signal SCAN1 and the second scan signal SCAN2 can be output at a high level during the holding period. Therefore, the first switching transistor ST1, the second switching transistor ST2, the fourth switching transistor ST4, and the fifth switching transistor ST5 can all be turned off. However, even when the first switching transistor ST1 is turned off, the data signal (data voltage) input during the previous period (e.g., the sampling period) can be maintained by the second capacitor C2. However, the present disclosure is not limited thereto.
[0139] Finally, a first selection signal Ss at a low level, a light emission signal EM at a low level, and a second selection signal Ps at a high level can be output during the light emission period. The reference voltage Vref can be applied to the first node N1 through a third switching transistor ST3, and the third switching transistor ST3 is turned on through the light emission signal EM at a low level. The voltage of the first node N1 can be the voltage difference between the reference voltage Vref and the data signal (data voltage). This voltage change can be reflected to the second node N2. The gate-source voltage of the driving transistor DT can be set to a value Vdata - Vref + Vth obtained by subtracting the reference voltage Vref from the data signal (data voltage) and then adding the data signal (data voltage). Therefore, the first driving current can be controlled.
[0140] The first selection signal Ss is output at a low level. Therefore, the first selection transistor TP1 is turned on. In addition, the first driving current can be provided from the driving transistor DT to the first type of light-emitting diode EDa through the turned-on first selection transistor TP1. Therefore, the first type of light-emitting diode EDa can emit light. However, the second selection signal Ps is output at a high level. Therefore, the second selection transistor TP2 is turned off. Therefore, the second driving current cannot be transmitted from the driving transistor DT to the second type of light-emitting diode EDb. Therefore, when the pixel circuit SPC_1 is driven in the first state, the first driving current can be applied only to the first type of light-emitting diode EDa. Therefore, only the first type of light-emitting diode EDa can emit light.
[0141] Hereinafter, reference will be made to Figure 4 and Figure 5B to describe the operation of the pixel circuit SPC_1 in the second state. Except that the first selection signal Ss and the second selection signal Ps are output in a manner opposite to that in the first state, the pixel circuit SPC_1 can be driven in the second state in substantially the same manner as in the first state. That is, the first selection signal Ss can be output only at a high level as the cut-off level. In addition, during the light emission period when the second type of light-emitting diode EDb emits light, the second selection signal Ps can be output at a low level as the conduction level. However, the present disclosure is not limited thereto.
[0142] Specifically, a first scan signal SCAN1 with a high level and a second scan signal SCAN2 with a low level can be output in the initial period. In addition, a first selection signal Ss can be output with a high level, and a second selection signal Ps and a light-emitting signal EM can be output with low levels. Therefore, a second switching transistor ST2, a fourth switching transistor ST4, and a fifth switching transistor ST5 can be turned on through the second scan signal SCAN2. In addition, a second selection transistor TP2 can be turned on through the second selection signal Ps, and a third switching transistor ST3 can be turned on through the light-emitting signal EM. In addition, a first selection transistor TP1 can be turned off through the first selection signal Ss with a high level. In addition, a first switching transistor ST1 can be turned off through the first scan signal SCAN1 with a high level.
[0143] The voltage of the first node N1 can be initialized to a reference voltage Vref via the third switching transistor ST3 turned on through the light-emitting signal EM. The anodes of the first type of light-emitting diodes EDa and the second type of light-emitting diodes EDb can be initialized to the reference voltage Vref by the fourth switching transistor ST4 and the fifth switching transistor ST5 respectively, and the fourth switching transistor ST4 and the fifth switching transistor ST5 are turned on through the second scan signal SCAN2. In addition, the driving transistor DT can be diode-connected through the turned-on second switching transistor ST2 and can operate like a diode. Finally, the reference voltage Vref transmitted to the anode of the second type of light-emitting diode EDb through the turned-on fifth switching transistor ST5 can be transmitted to the third node N3 and the second node N2 through the turned-on second selection transistor TP2 and the second switching transistor ST2. Therefore, the third node N3 and the second node N2 can be initialized to the reference voltage Vref.
[0144] Then, a low-level first scan signal SCAN1 and a low-level second scan signal SCAN2 can be output in the sampling period. In addition, the second selection signal Ps and the light-emitting signal EM can be output from a low level to a high level in the sampling period. When the high-level light-emitting signal EM is output, the third switching transistor ST3 can be turned off. When the first switching transistor ST1 is turned on through the low-level first scan signal SCAN1, a data signal can be transmitted to the first node N1. In addition, the second switching transistor ST2 can be turned on through the low-level second scan signal SCAN2. In addition, the driving transistor DT can be diode-connected through the turned-on second switching transistor ST2, and the voltage difference between the first power supply voltage VDD and the threshold voltage can be sampled and then provided to the second node N2.
[0145] Finally, a second selection signal Ps at a low level, a light emission signal EM at a low level, and a first selection signal Ss at a high level can be output during the light emission period. A reference voltage Vref can be applied to the first node N1 through a third switching transistor ST3, and the third switching transistor ST3 is turned on through the light emission signal EM at a low level. The voltage of the first node N1 can be the voltage difference between the reference voltage Vref and the data signal (data voltage). Such a voltage change can be reflected to the second node N2. The gate-source voltage of the driving transistor DT can be set to a value Vdata - Vref + Vth obtained by subtracting the reference voltage Vref plus the data signal (data voltage) from the data signal (data voltage). Therefore, the second driving current can be controlled.
[0146] In addition, the second driving current can be provided from the driving transistor DT to the second type of light-emitting diode EDb through the turned-on second selection transistor TP2. Therefore, the second type of light-emitting diode EDb can emit light. However, since the first selection signal Ss is output at a high level, the first selection transistor TP1 is turned off. Therefore, the first driving current cannot be transmitted from the driving transistor DT to the first type of light-emitting diode EDa. Therefore, when the pixel circuit SPC_1 is driven in the second state, the second driving current can be applied only to the second type of light-emitting diode EDb. Therefore, only the second type of light-emitting diode EDb can emit light.
[0147] Although Figure 5A and Figure 5B are not shown, when the pixel circuit SPC_1 is driven in the third state, both the first type of light-emitting diode EDa and the second type of light-emitting diode EDb emit light. Therefore, the operation of the pixel circuit SPC_1 for forming the first driving current and the waveform of the first selection signal Ss in the third state are substantially the same as or similar to the operation of the pixel circuit SPC_1 for forming the first driving current and the waveform of the first selection signal Ss in the first state described above with reference to Figure 5A In addition, the operation of the pixel circuit SPC_1 for forming the second driving current and the waveform of the second selection signal Ps in the third state are substantially the same as or similar to the operation of the pixel circuit SPC_1 for forming the second driving current and the waveform of the second selection signal Ps in the second state described above with reference to Figure 5B Therefore, redundant descriptions thereof will be omitted or briefly provided.
[0148] Figure 6 and Figure 7 are cross-sectional views of a display device according to an exemplary embodiment of the present disclosure.
[0149] Figure 6 shows a pixel in which the first type of lens 161 is provided, and Figure 7Pixels in which a second type of lens 162 is provided are shown.
[0150] Reference Figure 6 and Figure 7 According to the present disclosure, the display device 100 according to an exemplary embodiment may include a substrate 110, a buffer film 111, a gate insulating film 112, and an interlayer insulating film 113, but is not limited thereto. In addition, the display device 100 may further include a lower protective film 114, an outer coating 115, a bank insulating film 116, a first selection transistor TP1, and a second selection transistor TP2, but is not limited thereto. In addition, the display device 100 may further include a first type of light-emitting diode EDa, a second type of light-emitting diode EDb, a first type of lens 161, a second type of lens 162, a lens protective film 170, and a packaging member 180.
[0151] The substrate 110 may include an insulating material. The substrate 110 may include a transparent material. For example, the substrate 110 may include glass, plastic, or a flexible polymer film, but is not limited thereto. For example, the flexible polymer film may be made of any one of the following, which are merely examples and not necessarily limited thereto: polyethylene terephthalate (PET), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polymethyl methacrylate (PMMA), polyethylene naphthalate (PEN), polyethersulfone (PES), cycloolefin copolymer (COC), triacetyl cellulose (TAC) film, polyvinyl alcohol (PVA) film, polyimide (PI) film, and polystyrene (PS).
[0152] The buffer film 111 may be disposed on the substrate 110. The buffer film 111 may include an insulating material. For example, the buffer film 111 may include an inorganic insulating material such as silicon oxide (SiOx) and silicon nitride (SiNx). The buffer film 111 may have a multilayer structure. For example, the buffer film 111 may have a structure of a stacked silicon nitride (SiNx) film and a silicon oxide (SiOx) film.
[0153] The buffer film 111 may be located between the driving portion (e.g., the driver circuit DC) of each pixel PX and the substrate 110. The buffer film 111 may reduce or suppress contamination caused by the substrate 110 during the formation of the driving portion. For example, the upper surface of the substrate 110 facing the driving portion of each pixel PX may be covered by the buffer film 111. The driving portion of each pixel PX may be located on the buffer film 111.
[0154] The gate insulating film 112 may be disposed on the buffer film 111. The gate insulating film 112 may include an insulating material. For example, the gate insulating film 112 may include an inorganic insulating material such as silicon oxide (SiO) and silicon nitride (SiN). The gate insulating film 112 may include a material having a high dielectric constant. For example, the gate insulating film 112 may include a high-K material such as hafnium oxide (HfO). The gate insulating film 112 may have a single-layer structure or a multi-layer structure, and is not limited thereto.
[0155] The gate insulating film 112 may extend between the gate 122 or 223 of the select transistor TP1 or TP2 and the semiconductor layer 121 or 221, respectively. For example, the gates of the driving transistor DT and the switching transistor ST may be insulated from the semiconductor layers of the driving transistor DT and the switching transistor ST through the gate insulating film 112. The gate insulating film 112 may cover the semiconductor layer of each pixel PX. The gates of the driving transistor DT and the switching transistor ST may be located on the gate insulating film 112.
[0156] The semiconductor layer 121 or 221 may include silicon such as amorphous silicon (a-Si), polycrystalline silicon (poly-Si), or low-temperature polycrystalline silicon, or may include an oxide such as indium gallium zinc oxide (IGZO), but the embodiments of the present disclosure are not limited thereto.
[0157] The interlayer insulating film 113 may be disposed on the gate insulating film 112. The interlayer insulating film 113 may include an insulating material. For example, the interlayer insulating film 113 may include an inorganic insulating material such as silicon oxide (SiO), silicon nitride (SiN). The interlayer insulating film 113 may extend between the gate and the source and between the gate and the drain of each of the driving transistor DT and the switching transistor ST. For example, the source and the drain of each of the driving transistor DT and the switching transistor ST may be insulated from the gate through the interlayer insulating film 113. The interlayer insulating film 113 may cover the gate of each of the driving transistor DT and the switching transistor ST. The source and the drain of each pixel PX may be located on the interlayer insulating film 113. The gate insulating film 112 and the interlayer insulating film 113 may expose the source region and the drain region of each semiconductor pattern in each pixel PX.
[0158] The lower protective film 114 may be disposed on the interlayer insulating film 113. The lower protective film 114 may include an insulating material. For example, the lower protective film 114 may include an inorganic insulating material such as silicon oxide (SiO), silicon nitride (SiN), and silicon oxynitride (SiON). The lower protective film 114 may reduce or inhibit damage to the driving part caused by external moisture and impact. The lower protective film 114 may extend along the surfaces of the driving transistor DT and the switching transistor ST facing the substrate 110. The lower protective film 114 may contact the interlayer insulating film 113 outside the driving part located in each pixel PX.
[0159] The protective film may have a structure in which an organic film and an inorganic film are alternately stacked. The inorganic film may block the penetration of moisture or oxygen. The organic film may flatten the surface of the inorganic film. When the organic film and the inorganic film are stacked in multiple layers, compared with a single layer, since the moving path length of moisture or oxygen increases, the penetration of moisture / oxygen affecting the light-emitting diode can be effectively blocked.
[0160] The outer coating 115 may be disposed on the lower protective film 114. The outer coating 115 may include an insulating material. The outer coating 115 may include a material different from that of the lower protective film 114. For example, the outer coating 115 may include an organic insulating material. The outer coating 115 may remove the step difference caused by the driving part of each pixel PX. For example, the upper surface of the outer coating 115 facing the substrate 110 may be a flat surface.
[0161] The first selection transistor TP1 and the second selection transistor TP2 may be disposed on the substrate 110. The first selection transistor TP1 may be electrically connected between the drain of the driving transistor DT and the first lower electrode 141 of the first type of light-emitting diode EDa. The second selection transistor TP2 may be electrically connected between the drain of the driving transistor DT and the second lower electrode 151 of the second type of light-emitting diode EDb. However, the embodiments are not limited thereto.
[0162] The first selection transistor TP1 may include a first semiconductor layer 121, a first gate 122, a first source 123, and a first drain 124. The first selection transistor TP1 may have the same or substantially the same structure as the switching transistor ST and the driving transistor DT. For example, the first semiconductor layer 121 may be located between the buffer film 111 and the gate insulating film 112. In addition, the first gate 122 may be located between the gate insulating film 112 and the interlayer insulating film 113. The first source 123 and the first drain 124 may be located between the interlayer insulating film 113 and the lower protective film 114. The first gate 122 may overlap the channel region of the first semiconductor layer 121. The first source 123 may be electrically connected to the source region of the first semiconductor layer 121. The first drain 124 may be electrically connected to the drain region of the first semiconductor layer 121. However, the embodiments are not limited thereto.
[0163] The second select transistor TP2 may include a second semiconductor layer 221, a second gate 223, a second source 225, and a second drain 227. For example, the second semiconductor layer 221 may be in the same layer as the first semiconductor layer 121, and the second gate 223 may be in the same layer as the first gate 122. In addition, the second source 225 and the second drain 227 may be in the same layer as the first source 123 and the first drain 124. However, the embodiments are not limited thereto.
[0164] The first type of light-emitting diode EDa and the second type of light-emitting diode EDb of each pixel PX may be disposed on or above the outer coating 115 of the pixel PX.
[0165] The first type of light-emitting diode EDa may emit light of a specific color. For example, the first type of light-emitting diode EDa may include a first lower electrode 141, a first light-emitting layer 142, and a first upper electrode 143 that are sequentially stacked on a substrate 110.
[0166] The first lower electrode 141 may include a conductive material. The first lower electrode 141 may include a material having a high reflectivity. For example, the first lower electrode 141 may include a metal such as aluminum (Al) and silver (Ag). The first lower electrode 141 may have a multilayer structure. For example, the first lower electrode 141 may have a structure in which a reflective electrode made of a metal is located between transparent electrodes made of a transparent conductive material such as ITO and IZO. The first lower electrode 141 may be electrically connected to the first drain 124 of the first select transistor TP1 through a contact hole penetrating through the lower protective film 114 and the outer coating 115.
[0167] The first light-emitting layer 142 may generate light having a brightness corresponding to the voltage difference between the first lower electrode 141 and the first upper electrode 143. For example, the first light-emitting layer 142 may include a light-emitting material layer EML containing a light-emitting material. The light-emitting material may include an organic material, an inorganic material, or a hybrid material.
[0168] The first light-emitting layer 142 may have a multilayer structure. For example, the first light-emitting layer 142 may further include at least one of a hole injection layer HIL, a hole transport layer HTL, an electron transport layer ETL, and an electron injection layer EIL. However, the present disclosure is not limited thereto.
[0169] The first upper electrode 143 may include a conductive material. The first upper electrode 143 may include a material different from that of the first lower electrode 141. The first upper electrode 143 may have a higher transmittance than the first lower electrode 141, but the present disclosure is not limited thereto. For example, the first upper electrode 143 may be a transparent electrode made of a transparent conductive material such as ITO and IZO. Accordingly, in the display device 100 according to an exemplary embodiment of the present disclosure, the light generated by the first light-emitting layer 142 may be emitted through the first upper electrode 143.
[0170] The second type of light-emitting diode EDb may implement the same or substantially the same color as the first type of light-emitting diode EDa. The second type of light-emitting diode EDb may have the same or substantially the same structure as the first type of light-emitting diode EDa. For example, the second type of light-emitting diode EDb may include a second lower electrode 151, a second light-emitting layer 152, and a second upper electrode 153 sequentially stacked on a substrate 110.
[0171] The second lower electrode 151 may correspond to the first lower electrode 141, the second light-emitting layer 152 may correspond to the first light-emitting layer 142, and the second upper electrode 153 may correspond to the first upper electrode 143. For example, the second lower electrode 151 may be disposed in the second type of light-emitting diode EDb to have the same or substantially the same structure as the first lower electrode 141. This also applies to the second light-emitting layer 152 and the second upper electrode 153. For example, the first type of light-emitting diode EDa and the second type of light-emitting diode EDb may be configured to have the same or substantially the same structure. However, the present disclosure is not limited thereto. In some exemplary embodiments, at least some components of the first type of light-emitting diode EDa and the second type of light-emitting diode EDb may be configured differently from each other.
[0172] The second light-emitting layer 152 may be spaced apart from the first light-emitting layer 142. Accordingly, in the display device according to an exemplary embodiment of the present disclosure, light emission caused by leakage current may be reduced or suppressed.
[0173] The second lower electrode 151 of each pixel PX may be spaced apart from the first lower electrode 141 of the pixel PX. For example, a bank insulating film 116 may be disposed between the first lower electrode 141 and the second lower electrode 151 of each pixel PX. The bank insulating film 116 may include an insulating material. For example, the bank insulating film 116 may include an organic insulating material, but is not limited thereto. The bank insulating film 116 may include a material different from that of the outer coating 115.
[0174] The second lower electrode 151 of each pixel PX can be insulated from the first lower electrode 141 of the pixel PX by the bank insulating film 116. For example, the bank insulating film 116 can cover the edges of the first lower electrode 141 and the second lower electrode 151 located in each pixel PX. Therefore, in the display device 100, an image formed by the first lens region of each pixel PX where the first type of light-emitting diode EDa is located or an image formed by the second lens region of each pixel PX where the second type of light-emitting diode EDb is located can be provided to the user.
[0175] The first light-emitting layer 142 and the first upper electrode 143 of the first type of light-emitting diode EDa located in each pixel PX can be stacked on the portion of the first lower electrode 141 exposed by the bank insulating film 116. The second light-emitting layer 152 and the second upper electrode 153 of the second type of light-emitting diode EDb located in each pixel PX can be stacked on the portion of the second lower electrode 151 exposed by the bank insulating film 116. For example, the bank insulating film 116 can separate the first light-emitting region where light from the first type of light-emitting diode EDa in each pixel PX is emitted from the second light-emitting region where light from the second type of light-emitting diode EDb is emitted. The second light-emitting region separated in each pixel PX can be smaller in size than the first light-emitting region, but is not limited thereto.
[0176] The second upper electrode 153 of each pixel PX can be electrically connected to the first upper electrode 143 of the pixel PX. For example, the voltage applied to the second upper electrode 153 of the second type of light-emitting diode EDb located in each pixel PX can be equal to the voltage applied to the first upper electrode 143 of the first type of light-emitting diode EDa located in the pixel PX. The second upper electrode 153 of each pixel PX can include the same or substantially the same material as the first upper electrode 143 of the pixel PX, but is not limited thereto. For example, the second upper electrode 153 of each pixel PX can be formed simultaneously with the first upper electrode 143 of the pixel PX. The second upper electrode 153 of each pixel PX can extend onto the bank insulating film 116 to be in direct contact with the first upper electrode 143 of the pixel PX. The brightness of each of the first lens region and the second lens region located in each pixel PX can be controlled by the driving current generated in the pixel PX.
[0177] The encapsulation member 180 may be located on the first type of light-emitting diodes EDa and the second type of light-emitting diodes EDb of each pixel PX. The encapsulation member 180 may reduce or suppress damage to the light-emitting diodes EDa and EDb caused by external moisture and impact. The encapsulation member 180 may have a multi-layer structure, but is not limited thereto. For example, the encapsulation member 180 may include a first encapsulation layer 181, a second encapsulation layer 182, and a third encapsulation layer 183 stacked in sequence, but is not limited thereto. Each of the first encapsulation layer 181, the second encapsulation layer 182, and the third encapsulation layer 183 may contain an insulating material. The second encapsulation layer 182 may contain a material different from that of the first encapsulation layer 181 and the third encapsulation layer 183. For example, the first encapsulation layer 181 and the third encapsulation layer 183 may be inorganic encapsulation layers containing inorganic insulating materials such as silicon oxide (SiOx) and silicon nitride (SiNx), and the second encapsulation layer 182 may be an organic encapsulation layer containing an organic insulating material, but is not limited thereto. Accordingly, damage to the light-emitting diodes EDa and EDb of the display device 100 caused by external moisture and impact can be reduced or suppressed more effectively.
[0178] The first type of lens 161 and the second type of lens 162 may be disposed on the encapsulation member 180, but is not limited thereto.
[0179] The first type of lens 161 may be disposed on the first type of light-emitting diodes EDa. The light generated by the first type of light-emitting diodes EDa of each pixel PX may be emitted through the first type of lens 161 of the pixel PX. The first type of lens 161 may have a shape in which light in at least one direction may not be limited. For example, the first type of lens 161 located in each pixel PX may have a bar shape extending in one direction in a plan view. However, the present disclosure is not limited thereto.
[0180] In this case, the direction of the light emitted from the first lens region of each pixel PX may not be limited to that one direction. For example, the content (or image) provided through the first lens region of each pixel PX may be shared with a person adjacent to the user in one direction. Accordingly, the content provided by the light emitted through the first type of lens 161 may be displayed within a first viewing angle range wider than the content provided by the light emitted through the second type of lens 162, but is not limited thereto. For example, the content provided by the light emitted through the first type of lens 161 may be provided in a sharing mode.
[0181] The second type of lens 162 may be disposed on the second type of light-emitting diode EDb of each pixel PX, but is not limited thereto. The light generated by the second type of light-emitting diode EDb of each pixel PX may be emitted through the second type of lens 162 of the pixel PX. The second type of lens 162 may limit the direction of the light passing through the second type of lens 162 to one direction and / or another direction. For example, the second type of lens 162 located in each pixel PX may have a circular shape, an oval shape, etc. in a plan view.
[0182] In this case, the direction of the light emitted from the second lens region of each pixel PX may be limited to one direction and / or another direction. For example, the content (or image) provided through the second lens region of each pixel PX may not be shared with a person adjacent to the user. Therefore, the content provided by the light emitted through the second type of lens 162 may be displayed within a second viewing angle range narrower than the content provided by the light emitted through the first type of lens 161. For example, the content provided by the light emitted through the second type of lens 162 may be provided in a privacy mode. However, the present disclosure is not limited thereto.
[0183] The first light-emitting region of each pixel PX may correspond in shape to the first type of lens 161 of the pixel PX. For example, the first light-emitting region of each pixel PX may have a bar shape extending in one direction in a plan view. The first type of lens 161 may be larger in size than the first light-emitting region of the pixel PX, but is not limited thereto. Therefore, the efficiency of the light emitted from the first light-emitting region of the pixel PX can be improved.
[0184] The second light-emitting region of each pixel PX may correspond in shape to the second type of lens 162 of the pixel PX. For example, the second light-emitting region of each pixel PX may have a circular shape, an oval shape, etc. in a plan view. The second type of lens 162 may be larger in size than the second light-emitting region of the pixel PX. Therefore, the efficiency of the light emitted from the second light-emitting region of the pixel PX can be improved.
[0185] The lens protection film 170 may be located on the first type of lens 161 and the second type of lens 162 of the pixel PX. The lens protection film 170 may include an insulating material. For example, the lens protection film 170 may include an organic insulating material, but is not limited thereto. The lens protection film 17 may have a refractive index smaller than that of the first type of lens 161 and the second type of lens 162 located in each pixel PX. Therefore, in the display device 100 according to an exemplary embodiment of the present disclosure, due to the refractive index difference from the lens protection film 170, the light passing through the first type of lens 161 and the second type of lens 162 of each pixel PX may not be refracted toward the substrate 110.
[0186] Reference Figure 6 and Figure 7, as described above, the pixel PX may include a first type of lens 161 disposed on the first type of light-emitting diode EDa and a second type of lens 162 disposed on the second type of light-emitting diode EDb. However, the present disclosure is not limited thereto.
[0187] For example, the pixel PX may further include a plurality of first type of lenses 161 disposed on each of the first type of light-emitting diode EDa and the second type of light-emitting diode EDb. Details thereof will be described below with reference to Figure 8 description.
[0188] Figure 8 is a circuit diagram showing an example of a first pixel of a display device according to an exemplary embodiment of the present disclosure. Figure 9 is a circuit diagram showing an example of a second pixel of a display device according to an exemplary embodiment of the present disclosure. Figure 10 is a circuit diagram showing an example of a third pixel of a display device according to an exemplary embodiment of the present disclosure.
[0189] Figures 8 to 10 respectively show examples of a first pixel PX1, a second pixel PX2, and a third pixel PX3 included in a plurality of pixels PX in a display panel PN of a display device 100 according to an exemplary embodiment of the present disclosure.
[0190] Figures 8 to 10 Each of the first pixel PX1, the second pixel PX2, and the third pixel PX3 shown respectively in may include the pixel circuit SPC described above with reference to Figure 3 description or the pixel circuit SPC_1 described above with reference to Figure 4 description. Therefore, redundant descriptions of the embodiments described above with reference to Figure 3 and Figure 4 description will be omitted or briefly provided.
[0191] In addition, for ease of description, Figures 8 to 10 only a selection circuit, a plurality of light-emitting diodes, and a plurality of lenses among the components included in the first pixel PX1, the second pixel PX2, and the third pixel PX3 are shown. Here, for the plurality of lenses, for ease of description, only the correspondence is schematically shown by a dotted line.
[0192] First, referring to Figure 3 , Figure 4 and Figure 8 , the first pixel PX1 may include a first selection circuit SC1 and a plurality of light-emitting diodes ED1 and ED2.
[0193] The first selection circuit SC1 may include a first transistor T1 and a second transistor T2. Figure 8 The first transistor T1 and the second transistor T2 of may respectively correspond to those described above with reference toFigure 3 and Figure 4 the first selection transistor TP1 and the second selection transistor TP2 described
[0194] The gate of the first transistor T1 can be turned on or off in response to a selection signal provided from the first selection signal line SSL1. Specifically, the first transistor T1 can be turned on in response to a low-level selection signal and turned off in response to a high-level selection signal. In addition, the gate of the second transistor T2 can be turned on or off in response to a selection signal provided from the second selection signal line SSL2. Specifically, the second transistor T2 can be turned on in response to a low-level selection signal and turned off in response to a high-level selection signal. Herein, the selection signal provided from the first selection signal line SSL1 and the selection signal provided from the second selection signal line SSL2 can be the first selection signal Ss and the second selection signal Ps described above with reference to Figure 3 and Figure 4 However, the present disclosure is not limited thereto.
[0195] The plurality of light-emitting diodes ED1 and ED2 included in the first pixel PX1 can include a first light-emitting diode ED1 and a second light-emitting diode ED2. In a manner substantially the same as or similar to the embodiment described above with reference to Figure 3 and Figure 4 the first light-emitting diode ED1 of the first pixel PX1 can be connected between the first transistor T1 turned on or off by a selection signal provided from the first selection signal line SSL1 and a second power supply line providing a second power supply voltage VSS (for example, a low-potential power supply voltage). In addition, the second light-emitting diode ED2 of the first pixel PX1 can be connected between the second transistor T2 turned on or off by a selection signal provided from the second selection signal line SSL2 and the second power supply line providing the second power supply voltage VSS. For example, Figure 8 the first light-emitting diode ED1 and the second light-emitting diode ED2 can respectively correspond to the first type of light-emitting diode EDa and the second type of light-emitting diode EDb described above with reference to Figure 3 and Figure 4 described.
[0196] Therefore, when the first transistor T1 is turned on in response to a conduction-level selection signal provided from the first selection signal line SSL1, a first driving current flowing through the first light-emitting diode ED1 can be generated. Therefore, the first light-emitting diode ED1 of the first pixel PX1 can emit light.
[0197] In addition, when the second transistor T2 is turned on in response to a selection signal at a conductive level provided from the second selection signal line SSL2, a second driving current flowing through the second light-emitting diode ED2 can be generated. Accordingly, the second light-emitting diode ED2 of the first pixel PX1 can emit light.
[0198] The first pixel PX1 can be driven in a first state in which the first light-emitting diode ED1 emits light or in a third state in which both the first light-emitting diode ED1 and the second light-emitting diode ED2 emit light, but is not limited thereto.
[0199] The first pixel PX1 may include a first lens LS1 disposed on the first light-emitting diode ED1 and a second lens LS2 disposed on the second light-emitting diode ED2. For example, each of the first lens LS1 and the second lens LS2 may be implemented as the first type of lens 161 described above with reference to Figure 6 However, the present disclosure is not limited thereto.
[0200] Accordingly, when a first driving current is generated in the first pixel PX1 and the first light-emitting diode ED1 emits light, the light generated by the first light-emitting diode ED1 of the first pixel PX1 is emitted through the first lens LS1 implemented as the first type of lens 161. Accordingly, the content provided by the light generated by the first light-emitting diode ED1 of the first pixel PX1 can be provided at a first viewing angle.
[0201] In addition, when a second driving current is generated in the first pixel PX1 and the second light-emitting diode ED2 emits light, the light generated by the second light-emitting diode ED2 of the first pixel PX1 is emitted through the second lens LS2 implemented as the first type of lens 161. Accordingly, the content provided by the light generated by the second light-emitting diode ED2 of the first pixel PX1 can be provided at a first viewing angle.
[0202] That is, for the first pixel PX1, both the content provided by the light generated by the first light-emitting diode ED1 and the content provided by the light generated by the second light-emitting diode ED2 can be provided at a first viewing angle.
[0203] As described above, the first pixel PX1 can be driven in a first state in which the first light-emitting diode ED1 emits light or in a third state in which both the first light-emitting diode ED1 and the second light-emitting diode ED2 emit light. Accordingly, when the first pixel PX1 is driven in the first state, the content provided by the light generated by the first light-emitting diode ED1 can be provided at a first viewing angle. In addition, when the first pixel PX1 is driven in the third state, the content provided by the light generated by the first light-emitting diode ED1 and the content provided by the light generated by the second light-emitting diode ED2 can be provided at a first viewing angle.
[0204] In addition, compared to the first state in which only the first light-emitting diode ED1 emits light, when driving the first pixel PX1 in the third state, content can be provided at the first viewing angle as in the first state. However, both the first light-emitting diode ED1 and the second light-emitting diode ED2 emit light, so the brightness of the content can be increased. That is, when the same data signal is written and the first pixel PX1 is driven in the third state, the brightness can be higher compared to the case of driving the first pixel PX1 in the first state.
[0205] Reference Figure 3 、 Figure 4 and Figure 9 , the second pixel PX2 may include a second selection circuit SC2 and a plurality of light-emitting diodes ED3 and ED4.
[0206] The second selection circuit SC2 may include a third transistor T3 and a fourth transistor T4. Figure 9 The third transistor T3 and the fourth transistor T4 of Figure 3 and Figure 4 may respectively correspond to the first selection transistor TP1 and the second selection transistor TP2 described above with reference to
[0207] The gate of the third transistor T3 may be turned on or off in response to a selection signal provided from the third selection signal line SSL3. Specifically, the third transistor T3 may be turned on in response to a low-level selection signal and turned off in response to a high-level selection signal. In addition, the gate of the fourth transistor T4 may be turned on or off in response to a selection signal provided from the fourth selection signal line SSL4. Specifically, the fourth transistor T4 may be turned on in response to a low-level selection signal and turned off in response to a high-level selection signal. Here, the selection signal provided from the third selection signal line SSL3 and the selection signal provided from the fourth selection signal line SSL4 may be the first selection signal Ss and the second selection signal Ps described above with reference to Figure 3 and Figure 4 . However, the present disclosure is not limited thereto.
[0208] The plurality of light-emitting diodes ED3 and ED4 included in the second pixel PX2 may include a third light-emitting diode ED3 and a fourth light-emitting diode ED4. In the same manner as described above with reference to Figure 3 and Figure 4In a manner substantially the same as or similar to the described embodiments, the third light-emitting diode ED3 of the second pixel PX2 may be connected between a third transistor T3 turned on or off by a selection signal provided from a third selection signal line SSL3 and a second power supply line that provides a second power supply voltage VSS. In addition, the fourth light-emitting diode ED4 of the second pixel PX2 may be connected between a fourth transistor T4 turned on or off by a selection signal provided from a fourth selection signal line SSL4 and the second power supply line that provides the second power supply voltage VSS. For example, Figure 9 the third light-emitting diode ED3 and the fourth light-emitting diode ED4 may respectively correspond to the first type of light-emitting diode EDa and the second type of light-emitting diode EDb described above with reference to Figure 3 and Figure 4 described.
[0209] Therefore, when the third transistor T3 is turned on in response to a selection signal of a conductive level provided from the third selection signal line SSL3, a first driving current flowing through the third light-emitting diode ED3 may be generated. Therefore, the third light-emitting diode ED3 of the second pixel PX2 may emit light.
[0210] In addition, when the fourth transistor T4 is turned on in response to a selection signal of a conductive level provided from the fourth selection signal line SSL4, a second driving current flowing through the fourth light-emitting diode ED4 may be generated. Therefore, the fourth light-emitting diode ED4 of the second pixel PX2 may emit light.
[0211] The second pixel PX2 may be driven in a first state in which the third light-emitting diode ED3 emits light or in a third state in which both the third light-emitting diode ED3 and the fourth light-emitting diode ED4 emit light, but is not limited thereto.
[0212] The second pixel PX2 may include a third lens LS3 provided on the third light-emitting diode ED3 and a fourth lens LS4 provided on the fourth light-emitting diode ED4. For example, the third lens LS3 may be implemented as the first type of lens 161 described above with reference to Figure 6 described, and the fourth lens LS4 may be implemented as the second type of lens 162 described above with reference to Figure 7 described.
[0213] Therefore, when a first driving current is generated in the second pixel PX2 and the third light-emitting diode ED3 emits light, the light generated by the third light-emitting diode ED3 of the second pixel PX2 may be emitted through the third lens LS3 implemented as the first type of lens 161. Therefore, the content provided by the light generated by the third light-emitting diode ED3 of the second pixel PX2 may be provided from a first viewing angle.
[0214] In addition, when a second driving current is generated in the second pixel PX2 and the fourth light-emitting diode ED4 emits light, the light generated by the fourth light-emitting diode ED4 of the second pixel PX2 can be emitted through the fourth lens LS4 implemented as a second type of lens 162. Therefore, the content provided by the light generated by the fourth light-emitting diode ED4 of the second pixel PX2 can be provided from a second viewing angle.
[0215] In this document, as described above, the second pixel PX2 can be driven in a first state where only the third light-emitting diode ED3 emits light or in a third state where both the third light-emitting diode ED3 and the fourth light-emitting diode ED4 emit light, but is not limited thereto. Therefore, when the second pixel PX2 is driven in the first state, the content provided by the light generated by the third light-emitting diode ED3 can be provided from a first viewing angle. In addition, when the second pixel PX2 is driven in the third state, the content provided by the light generated by the third light-emitting diode ED3 can be provided from a first viewing angle, and the content provided by the light generated by the fourth light-emitting diode ED4 can be provided from a second viewing angle. In this document, even when the content is provided from the second viewing angle, the content is also provided from the first viewing angle. As a result, the content can be provided to the user from the first viewing angle. Therefore, when the second pixel PX2 is driven in the first state or the third state, the content can be provided to the user from the first viewing angle.
[0216] In addition, compared with the first state where only the third light-emitting diode ED3 emits light, when the second pixel PX2 is driven in the third state, the content can be provided from the first viewing angle as in the first state. However, since both the third light-emitting diode ED3 and the fourth light-emitting diode ED4 emit light, the brightness of the content can be increased. That is, when the same data signal is written and the second pixel PX2 is driven in the third state, the brightness can be higher than when the second pixel PX2 is driven in the first state.
[0217] Reference Figure 3 、 Figure 4 and Figure 10 , the third pixel PX3 can include a third selection circuit SC3 and a plurality of light-emitting diodes ED5 and ED6.
[0218] The third selection circuit SC3 can include a fifth transistor T5 and a sixth transistor T6. Figure 10 The fifth transistor T5 and the sixth transistor T6 of Figure 3 and Figure 4 can respectively correspond to the first selection transistor TP1 and the second selection transistor TP2 described above with reference to
[0219] The gate of the fifth transistor T5 can be turned on or off in response to a selection signal provided from the fifth selection signal line SSL5. Specifically, the fifth transistor T5 can be turned on in response to a low-level selection signal and turned off in response to a high-level selection signal. In addition, the gate of the sixth transistor T6 can be turned on or off in response to a selection signal provided from the sixth selection signal line SSL6. Specifically, the sixth transistor T6 can be turned on in response to a low-level selection signal and turned off in response to a high-level selection signal. Herein, the selection signal provided from the fifth selection signal line SSL5 and the selection signal provided from the sixth selection signal line SSL6 can be the first selection signal Ss and the second selection signal Ps described above with reference to Figure 3 and Figure 4 respectively. However, the present disclosure is not limited thereto.
[0220] The plurality of light-emitting diodes ED5 and ED6 included in the third pixel PX3 can include a fifth light-emitting diode ED5 and a sixth light-emitting diode ED6. In a manner substantially the same as or similar to the embodiment described above with reference to Figure 3 and Figure 4 , the fifth light-emitting diode ED5 of the third pixel PX3 can be connected between the fifth transistor T5 that is turned on or off by a selection signal provided from the fifth selection signal line SSL5 and the second power supply line that provides the second power supply voltage VSS. In addition, the sixth light-emitting diode ED6 of the third pixel PX3 can be connected between the sixth transistor T6 that is turned on or off by a selection signal provided from the sixth selection signal line SSL6 and the second power supply line that provides the second power supply voltage VSS. For example, Figure 10 the fifth light-emitting diode ED5 and the sixth light-emitting diode ED6 of Figure 3 and Figure 4 can respectively correspond to the first type of light-emitting diode EDa and the second type of light-emitting diode EDb described above with reference to
[0221] Therefore, when the fifth transistor T5 is turned on in response to a conduction-level selection signal provided from the fifth selection signal line SSL5, a first driving current flowing through the fifth light-emitting diode ED5 can be generated. Therefore, the fifth light-emitting diode ED5 of the third pixel PX3 can emit light.
[0222] In addition, when the sixth transistor T6 is turned on in response to a conduction-level selection signal provided from the sixth selection signal line SSL6, a second driving current flowing through the sixth light-emitting diode ED6 can be generated. Therefore, the sixth light-emitting diode ED6 of the third pixel PX3 can emit light.
[0223] The third pixel PX3 can be driven in a first state where the fifth light-emitting diode ED5 emits light or a second state where the sixth light-emitting diode ED6 emits light, but is not limited thereto.
[0224] The third pixel PX3 may include a fifth lens LS5 disposed on a fifth light-emitting diode ED5 and a sixth lens LS6 disposed on a sixth light-emitting diode ED6. For example, the fifth lens LS5 may be implemented as the first type of lens 161 described above with reference to Figure 6 the description, and the sixth lens LS6 may be implemented as the second type of lens 162 described above with reference to Figure 7 the description.
[0225] That is to say, the third pixel PX3 may have substantially the same structure as the second pixel PX2. For example, the third pixel PX3 may have a lens structure including the first type of lens 161 disposed on the fifth light-emitting diode ED5 and the second type of lens 162 disposed on the sixth light-emitting diode ED6.
[0226] Therefore, when a first driving current is generated in the third pixel PX3 and the fifth light-emitting diode ED5 emits light, the light generated by the fifth light-emitting diode ED5 of the third pixel PX3 is emitted through the fifth lens LS5 implemented as the first type of lens 161. Therefore, the content provided by the light generated by the fifth light-emitting diode ED5 of the third pixel PX3 can be provided from a first viewing angle.
[0227] In addition, when a second driving current is generated in the third pixel PX3 and the sixth light-emitting diode ED6 emits light, the light generated by the sixth light-emitting diode ED6 of the third pixel PX3 is emitted through the sixth lens LS6 implemented as the second type of lens 162. Therefore, the content provided by the light generated by the sixth light-emitting diode ED6 of the third pixel PX3 can be provided from a second viewing angle.
[0228] In this document, as described above, the third pixel PX3 may be driven in a first state in which the fifth light-emitting diode ED5 emits light or a second state in which the sixth light-emitting diode ED6 emits light, but is not limited thereto. Therefore, when the third pixel PX3 is driven in the first state, the content provided by the light generated by the fifth light-emitting diode ED5 can be provided from a first viewing angle. In addition, when the third pixel PX3 is driven in the second state, the content provided by the light generated by the sixth light-emitting diode ED6 can be provided from a second viewing angle.
[0229] As described above, even when the second pixel PX2 has the same lens structure as the third pixel PX3, the second pixel PX2 and the third pixel PX3 can provide content by different driving methods in response to selection signals respectively provided from the third selection signal line SSL3 and the fourth selection signal line SSL4 of the second pixel PX2 and the fifth selection signal line SSL5 and the sixth selection signal line SSL6 of the third pixel PX3. For example, since the second pixel PX2 is driven in the first state or the third state as described above, the second pixel PX2 can provide content only in the sharing mode. In addition, since the third pixel PX3 is driven in the first state or the second state, the third pixel PX3 can provide content in the sharing mode or in the privacy mode. However, the present disclosure is not limited thereto.
[0230] Figure 11 An example of a display panel of a display device according to an exemplary embodiment of the present disclosure is shown. Figure 12 Shows Figure 11 an example of a first region of the display panel.
[0231] In addition, Figure 11 Shows including in accordance with Figure 1 and Figure 2 an example of a display panel PN of a display device 100 according to an exemplary embodiment of the present disclosure and including a plurality of regions such as a first region A1 and a second region A2, but not limited thereto. Figure 12 Shows including in Figure 11 an example of a first region A1 of the display panel PN.
[0232] Figure 11 and Figure 12 are plan views showing the horizontal direction as the first direction DR1 and the vertical / upright direction as the second direction DR2 for ease of description.
[0233] Please refer to Figure 2 and Figure 11 , the display panel PN can be divided into a plurality of regions A1 and A2. For example, as Figure 11 shown, the display panel PN can be divided into two regions A1 and A2. For example, the display panel PN can include a first region A1 and a second region A2 adjacent to the first region A1 in a direction opposite to the first direction DR1.
[0234] Each of regions A1 and A2 included in display panel PN may include a plurality of pixels, and each pixel includes a pixel circuit. For example, a plurality of first pixels PX1 and a plurality of second pixels PX2 may be arranged at intervals of each other in a first direction DR1 and a second direction DR2 in the first region A1. In addition, a plurality of third pixels PX3 may be arranged at intervals of each other in the first direction DR1 and the second direction DR2 in the second region A2. However, the present disclosure is not limited thereto.
[0235] Reference will be made to Figure 12 to describe in more detail the arrangement of the plurality of first pixels PX1 and the plurality of second pixels PX2 in the first region A1. The first region A1 of the display panel PN may include a first sub-region AA1, a second sub-region AA2, and a third sub-region AA3 arranged in sequence along the first direction DR1. For example, the second sub-region AA2 may be arranged adjacent to the first sub-region AA1 along the first direction DR1. In addition, the third sub-region AA3 may be arranged adjacent to the second sub-region AA2 along the first direction DR1. In addition, the second sub-region AA2 may be arranged between the first sub-region AA1 and the third sub-region AA3, but is not limited thereto.
[0236] Reference Figure 11 and Figure 12 , the first sub-region AA1 and the second sub-region AA2 of the first region A1 may be defined as the part of the first region A1 adjacent to the second region A2. In addition, the third sub-region AA3 may be defined as another part of the first region A1 other than the first sub-region AA1 and the second sub-region AA2. Herein, Figure 12 the first sub-region AA1 and the second sub-region AA2 shown are merely examples of the part of the first region A1 adjacent to the second region A2, and are not limited thereto. In addition, the part of the first region A1 adjacent to the second region A2 may be arranged differently according to the design of the display panel PN.
[0237] Each of the first sub-region AA1 to the third sub-region AA3 may include a plurality of pixels arranged at intervals of each other in the first direction DR1 and the second direction DR2, such as the first pixel PX1 and / or the second pixel PX2, but is not limited thereto.
[0238] The first sub-region AA1 to the third sub-region AA3 may have second pixels PX2 with different densities (or pixel densities). That is, the second pixels PX2 may be arranged at different densities (or pixel densities) in the first sub-region AA1 to the third sub-region AA3.
[0239] The ratio of the second pixels PX2 per unit area (e.g., pixel density) may gradually decrease in the first direction DR1 within the first region A1. For example, the ratio of the second pixels PX2 per unit area may gradually decrease in the direction from the first sub-region AA1 to the third sub-region AA3, i.e., within the first region A1 as the distance from the boundary between the first region A1 and the second region A2 increases.
[0240] For example, a plurality of first pixels PX1 and a plurality of second pixels PX2 may be provided in the first sub-region AA1, and the plurality of second pixels PX2 may be provided at a first pixel density in the first sub-region AA1.
[0241] In addition, a plurality of first pixels PX1 and a plurality of second pixels PX2 may be provided in the second sub-region AA2. In addition, the plurality of second pixels PX2 may be provided at a second pixel density lower than the first pixel density in the first sub-region AA1 in the second sub-region AA2.
[0242] In addition, only a plurality of first pixels PX1 may be provided in the third sub-region AA3. In other words, no second pixel PX2 is provided in the third sub-region AA3. Therefore, the third pixel density of the second pixels PX2 in the third sub-region AA3 may be lower than the second pixel density of the second pixels PX2 in the second sub-region AA2, and the third pixel density of the second pixels PX2 in the third sub-region AA3 may be zero (0), but is not limited thereto.
[0243] In this document, the density or pixel density may be defined as the ratio (%) of the area where pixels are provided to the corresponding total area. Alternatively, the density or pixel density may be defined as the ratio (%) of the area where pixels are provided to a predetermined unit area. The area where pixels are provided may be the sum of the respective areas of the pixels, but is not limited thereto.
[0244] In addition, the area of each pixel may refer to the area of a region including a pixel circuit and a light-emitting diode. For example, the area of each pixel may refer to the area of the light-emitting surface of the light-emitting diode. As another example, if each pixel includes an organic light-emitting diode, the area of the pixel may refer to the area of the anode or the area of the light-emitting layer exposed between the pixel defining films.
[0245] Alternatively, the density or pixel density may be defined as the total number of pixels per unit area (pixels per inch (PPI)) with respect to the corresponding total area, or the total number of pixels per unit area (pixels per inch (PPI)) with respect to a predetermined unit area.
[0246] More specifically, referring to Figure 12, the first sub-region AA1 of the first region A1 may include the first column C1 and the second column C2, but is not limited thereto. Specifically, the first sub-region AA1 of the first region A1 may include a plurality of first pixels PX1 arranged in sequence along the second direction DR2 in the first column C1. In addition, the first sub-region AA1 of the first region A1 may include a plurality of second pixels PX2 arranged in sequence along the second direction DR2 in the second column C2 adjacent to the first column C1 in the first direction DR1. In this way, the plurality of second pixels PX2 may be arranged in the second column C2, which is one of the two columns C1 and C2, and the plurality of first pixels PX1 may be arranged in the first column C1, which is the other column. In this case, the plurality of second pixels PX2 may be defined as being arranged in the first sub-region AA1 with a first pixel density.
[0247] In addition, the second sub-region AA2 of the first region A1 may include the third column C3, the fourth column C4, and the fifth column C5, but is not limited thereto. Specifically, the second sub-region AA2 of the first region A1 may include a plurality of first pixels PX1 arranged in sequence along the second direction DR2 in each of the third column C3 adjacent to the second column C2 in the first direction DR1 and the fourth column C4 adjacent to the third column C3 in the first direction DR1. In addition, the second sub-region AA2 of the first region A1 may include a plurality of second pixels PX2 arranged in sequence along the second direction DR2 in the fifth column C5 adjacent to the fourth column C4 in the first direction DR1. In this way, the plurality of second pixels PX2 may be arranged in the fifth column C5, which is one of the three columns C3, C4, and C5, and the plurality of first pixels PX1 may be arranged in the third column C3 and the fourth column C4, which are the other columns, but is not limited thereto. In this case, the plurality of second pixels PX2 may be defined as being arranged in the second sub-region AA2 with a second pixel density. In this article, as described above, the second pixel density in the second sub-region AA2 may be lower than the first pixel density in the first sub-region AA1.
[0248] In addition, in addition to the first sub-region AA1 and the second sub-region AA2 provided with the second pixels PX2, a plurality of first pixels PX1 may be provided only in the third sub-region AA3 of the first region A1. For example, the plurality of first pixels PX1 may be sequentially provided in multiple columns in the third sub-region AA3 along the second direction DR2. The multiple columns include the sixth column C6 adjacent to the fifth column C5 in the first direction DR1, the seventh column C7 adjacent to the sixth column C6 in the first direction DR1, the eighth column C8 adjacent to the seventh column C7 in the first direction DR1, the ninth column C9 adjacent to the eighth column C8 in the first direction DR1, the tenth column C10 adjacent to the ninth column C9 in the first direction DR1, the eleventh column C11 adjacent to the tenth column C10 in the first direction DR1, the twelfth column C12 adjacent to the eleventh column C11 in the first direction DR1, and the thirteenth column C13 adjacent to the twelfth column C12 in the first direction DR1, and so on. In this way, when only the plurality of first pixels PX1 are provided in multiple columns, the second pixels PX2 may be defined as being provided in the third sub-region AA3 at a third pixel density. For example, the third pixel density in the third sub-region AA3 may be lower than the second pixel density in the second sub-region AA2 which is lower than the first pixel density in the first sub-region AA1, and the third pixel density may have a value substantially equal to zero (0), but is not limited thereto.
[0249] In addition, as described above, the first region A1 of the display panel PN is provided on the driver's seat side in the vehicle as described above with reference to Figure 1 and may provide content in a shared mode. In addition, the second region A2 of the display panel PN is provided on the front passenger seat side in the vehicle as described above with reference to Figure 1 and may provide content in a shared mode or a privacy mode according to the driving mode of the display device 100.
[0250] For example, as described above, the first pixels PX1 and the second pixels PX2 driven in the first state or the third state may be provided in the first region A1 of the display panel PN, and may provide content to the user at a first viewing angle. In addition, the third pixels PX3 driven in the first state or the second state may be provided in the second region A2 of the display panel PN, and may provide content to the user at the first viewing angle or the second viewing angle. However, the present disclosure is not limited thereto.
[0251] In the display device 100 according to an exemplary embodiment of the present disclosure, a first pixel PX1 including only a first type of lens 161 is disposed in a first area A1 that provides content from a first viewing angle. In addition, a second pixel PX2 having the same lens structure as a third pixel PX3 disposed in a second area A2 (i.e., including the first type of lens 161 and a second type of lens 162) is disposed in the first area A1. Accordingly, visibility of a boundary between the first area A1 and the second area A2 can be reduced or minimized. However, the present disclosure is not limited thereto.
[0252] More specifically, in a comparative example of the present disclosure, different from the display device 100 according to an exemplary embodiment of the present disclosure, the second pixel PX2 is not disposed in the first area A1, and only the first pixel PX1 including only the first type of lens 161 is disposed in the first area A1. In addition, in the comparative example, the third pixel PX3 including the first type of lens 161 and the second type of lens 162 is disposed in the second area A2. As referred to above Figure 6 and Figure 7 stated, the first type of lens 161 has a different shape from the second type of lens 162. Accordingly, a size of a first light-emitting area exposed by the first type of lens 161 may be different from a size of a second light-emitting area exposed by the second type of lens 162, and a boundary between the first area A1 and the second area A2 may be visible. For example, even when pixels disposed in a display panel do not display any image in a power-off state, the boundary between the first area A1 and the second area A2 may be visible due to reflection of external light. As another example, when pixels disposed in the display panel display an image in a privacy mode in a power-on state, the boundary between the first area A1 and the second area A2 may be visible due to a size difference of the light-emitting areas as described above.
[0253] However, in the display device 100 according to an exemplary embodiment of the present disclosure, the first area A1 of the display panel PN that provides content from the first viewing angle includes not only the first pixel PX1 but also the second pixel PX2 having the same lens structure as the third pixel PX3 disposed in the second area A2. Accordingly, visibility of a boundary between the first area A1 and the second area A2 can be reduced or minimized.
[0254] Hereinafter, examples of driving the display panel PN according to a driving mode of the display device 100 will be described in more detail with reference to Figures 13A to 15 Examples of driving the display panel PN according to a driving mode of the display device 100 will be described in more detail.
[0255] Figure 13A An example of driving the display device according to an exemplary embodiment of the present disclosure in a first mode is shown. Figure 13B An example of driving the display device according to an exemplary embodiment of the present disclosure in a second mode is shown. Figure 14Shows an example in which a first region of Figure 12 is driven. Figure 15 Shows another example in which a first region of Figure 12 is driven.
[0256] In addition, Figure 13A and Figure 13B show examples of a second region A2 when driving a display device 100 according to an exemplary embodiment of the present disclosure in a first mode and a second mode, respectively.
[0257] Referring to Figures 2 to 12 , a mode controller MS included in the display device 100 may generate a mode selection signal MSS based on a mode signal input from the outside. For example, the mode controller MS may receive a mode signal from the outside according to the driving mode of the display device 100 and generate a mode selection signal MSS based on the mode signal. Then, the mode controller MS may provide the mode selection signal MSS to a mode selection unit MD. In addition, the mode selection unit MD may provide a selection signal corresponding to the driving mode to a plurality of pixels PX in response to the mode selection signal MSS provided from the mode controller MS. For example, the plurality of pixels PX may include a plurality of first pixels PX1 and a plurality of second pixels PX2 provided in a first region A1 and a plurality of third pixels PX3 provided in a second region A2. However, the present disclosure is not limited thereto.
[0258] When the display device 100 is driven in the first mode, a second region A2 of the display panel PN may provide content to a user at a first viewing angle in response to a selection signal provided from the mode selection unit MD.
[0259] Specifically, referring to Figure 13A , when the display device 100 is driven in the first mode, each pixel of the plurality of third pixels PX3 provided in the second region A2 may be driven in a first state.
[0260] For example, in the first mode, a fifth transistor T5 included in the third pixel PX3 may be turned on in response to a selection signal provided through a fifth selection signal line SSL5. Specifically, the fifth transistor T5 may be turned on in response to a low-level selection signal and turned off in response to a high-level selection signal. In addition, a first driving current may be generated in the third pixel PX3, and light generated from a fifth light-emitting diode ED5 of the third pixel PX3 by the first driving current is emitted through a fifth lens LS5 configured as a first type of lens 161. Therefore, content may be provided at a first viewing angle.
[0261] In addition, in the first mode, a selection signal maintained at a cut-off level is provided through the sixth selection signal line SSL6. Accordingly, a sixth transistor T6 included in the third pixel PX3 can be maintained in a cut-off state, and a sixth light-emitting diode ED6 of the third pixel PX3 can be maintained in a non-light-emitting state.
[0262] In addition, when driving the display device 100 in the second mode, a second region A2 of the display panel PN can provide content to a user at a second viewing angle in response to a selection signal provided from the mode selection unit MD.
[0263] Specifically, referring to Figure 13B , when driving the display device 100 in the second mode, each pixel among a plurality of third pixels PX3 provided in the second region A2 can be driven in a second state.
[0264] For example, in the second mode, a sixth transistor T6 included in the third pixel PX3 can be turned on in response to a selection signal provided through the sixth selection signal line SSL6. Specifically, the sixth transistor T6 can be turned on in response to a selection signal of a low level and turned off in response to a selection signal of a high level. In addition, a second driving current can be generated in the third pixel PX3, and light generated from the sixth light-emitting diode ED6 of the third pixel PX3 by the second driving current is emitted through a sixth lens LS6 configured as a second type of lens 162. Accordingly, content can be provided at a second viewing angle.
[0265] In addition, in the second mode, a selection signal maintained at a cut-off level is provided through the fifth selection signal line SSL5. Accordingly, a fifth transistor T5 included in the third pixel PX3 can be maintained in a cut-off state, and a fifth light-emitting diode ED5 of the third pixel PX3 can be maintained in a non-light-emitting state.
[0266] Accordingly, when driving the display device 100 in the first mode, a second region A2 of the display panel PN can provide content to a user at a first viewing angle. In addition, when driving the display device 100 in the second mode, a second region A2 of the display panel PN can provide content to a user at a second viewing angle.
[0267] In addition, as described above, the first region A1 of the display panel PN can be driven to provide content at a first viewing angle in both a first mode of providing content in a shared mode and a second mode of providing content in a privacy mode.
[0268] For example, when driving the display device 100 in the first mode or the second mode, the first region A1 of the display panel PN can provide content to a user at a first viewing angle in response to a selection signal provided from the mode selection unit MD, but is not limited thereto.
[0269] Specifically, referring to Figure 14 , in each of the first mode and the second mode, the first region A1 can be driven in the first state. For example, each of the plurality of first pixels PX1 and the plurality of second pixels PX2 provided in the first sub-region AA1 to the third sub-region AA3.
[0270] For example, in each of the first mode and the second mode, the first transistor T1 included in the first pixel PX1 can be turned on in response to a selection signal provided through the first selection signal line SSL1. Subsequently, a first drive current can be generated in the first pixel PX1 and the first light-emitting diode ED1 of the first pixel PX1 emits light. In addition, the third transistor T3 included in the second pixel PX2 can be turned on in response to a selection signal provided through the third selection signal line SSL3. Subsequently, a first drive current can be generated in the second pixel PX2 and the third light-emitting diode ED3 of the second pixel PX2 emits light. In addition, the light generated from the first light-emitting diode ED1 of the first pixel PX1 by the first drive current is emitted through the first lens LS1 configured as a first type of lens 161. In addition, the light generated from the third light-emitting diode ED3 of the second pixel PX2 by the first drive current is emitted through the third lens LS3 configured as a first type of lens 161. Therefore, the content can be provided from a first viewing angle.
[0271] In this case, the selection signals held at the cut-off level are provided through the second selection signal line SSL2 and the fourth selection signal line SSL4, respectively. Therefore, the second transistor T2 included in the first pixel PX1 and the fourth transistor T4 included in the second pixel PX2 can be held in the cut-off state. Therefore, the second light-emitting diode ED2 of the first pixel PX1 and the fourth light-emitting diode ED4 of the second pixel PX2 can be held in the non-light-emitting state.
[0272] However, the method of driving the first region A1 for providing content in the shared mode in each of the first mode and the second mode is not limited thereto.
[0273] For example, referring to Figure 15 , as described above, in each of the first mode and the second mode, the first region A1 can be driven in the third state. For example, each of the plurality of first pixels PX1 and the plurality of second pixels PX2 provided in the first sub-region AA1 to the third sub-region AA3.
[0274] For example, in each of the first mode and the second mode, a first transistor T1 included in a first pixel PX1 may be turned on in response to a selection signal provided through a first selection signal line SSL1. Subsequently, a first driving current may be generated in the first pixel PX1 and a first light-emitting diode ED1 of the first pixel PX1 may emit light. In addition, a third transistor T3 included in a second pixel PX2 may be turned on in response to a selection signal provided through a third selection signal line SSL3. Subsequently, a first driving current may be generated in the second pixel PX2 and a third light-emitting diode ED3 of the second pixel PX2 may emit light. In addition, light generated from the first light-emitting diode ED1 of the first pixel PX1 by the first driving current is emitted through a first lens LS1 configured as a first type of lens 161. In addition, light generated from the third light-emitting diode ED3 of the second pixel PX2 by the first driving current is emitted through a third lens LS3 configured as a first type of lens 161. Accordingly, content may be provided from a first viewing angle.
[0275] In addition, in each of the first mode and the second mode, a second transistor T2 included in the first pixel PX1 may be turned on in response to a selection signal provided through a second selection signal line SSL2. Subsequently, a second driving current may be generated in the first pixel PX1 and a second light-emitting diode ED2 of the first pixel PX1 may emit light. In addition, a fourth transistor T4 included in the second pixel PX2 may be turned on in response to a selection signal provided through a fourth selection signal line SSL4. Subsequently, a second driving current may be generated in the second pixel PX2 and a fourth light-emitting diode ED4 of the second pixel PX2 may emit light. In addition, light generated from the second light-emitting diode ED2 of the first pixel PX1 by the second driving current is emitted through a second lens LS2 configured as a first type of lens 161. In addition, light generated from the fourth light-emitting diode ED4 of the second pixel PX2 by the second driving current is emitted through a fourth lens LS4 configured as a second type of lens 162. Accordingly, content may be provided from a second viewing angle.
[0276] That is, according to Figure 15In the embodiment shown, in each of the first mode and the second mode, the first pixel PX1 can be driven in the third state. Accordingly, both the first light-emitting diode ED1 and the second light-emitting diode ED2 can emit light. In addition, the second pixel PX2 can be driven in the third state. Accordingly, both the third light-emitting diode ED3 and the fourth light-emitting diode ED4 can emit light. Herein, as described above, content can be provided from the first pixel PX1 to a user in a sharing mode by light generated from the first light-emitting diode ED1 of the first pixel PX1 and light generated from the second light-emitting diode ED2. In addition, content can be provided from the second pixel PX2 to the user in the sharing mode by light generated from the third light-emitting diode ED3 of the second pixel PX2 and light generated from the fourth light-emitting diode ED4. Herein, even when content is provided from the second perspective, content is provided from the first perspective. As a result, content can be provided from the second pixel PX2 to the user in the sharing mode.
[0277] As in the embodiment shown Figure 14 in the embodiment shown, Figure 15 in the above-described embodiment shown, the display device 100 can display content from a first perspective in a first region A1 of the display panel PN in each of the first mode and the second mode. In addition, in an embodiment different from the embodiment shown Figure 14 in the embodiment shown, Figure 15 the light-emitting diodes ED1 and ED2 of the first pixel PX1 and the light-emitting diodes ED3 and ED4 of the second pixel PX2 emit light. Accordingly, the brightness of the content can be increased. That is, when the same data signal is written and the first pixel PX1 and the second pixel PX2 are driven in the third state as shown Figure 15 in the embodiment shown, the brightness can be higher than when the first pixel PX1 and the second pixel PX2 are driven in the first state. Accordingly, power consumption for increasing the brightness can be reduced or minimized.
[0278] Figure 16 shows Figure 11 another example of the first region of the display panel.
[0279] Figure 16 shows a modified example of an exemplary embodiment associated with the pixel density of the second pixel PX2 provided in the first region A1_1. Accordingly, in Figure 12 this, parts different from the above-described exemplary embodiment will be mainly described to avoid redundancy. Figure 16
[0280] Figure 16 Figure 11 shows an example of the first region A1_1 included in the Figure 11 display panel PN.
[0281] Reference Figure 16 , the first area A1_1 of the display panel PN may include a plurality of areas such as a first sub-area AA1_1, a second sub-area AA2_1, and a third sub-area AA3_1 sequentially arranged along the first direction DR1. For example, the second sub-area AA2_1 may be arranged adjacent to the first sub-area AA1_1 along the first direction DR1. In addition, the third sub-area AA3_1 may be arranged adjacent to the second sub-area AA2_1 along the first direction DR1. In addition, the second sub-area AA2_1 may be arranged between the first sub-area AA1_1 and the third sub-area AA3_1, but is not limited thereto.
[0282] refer to Figure 11 and Figure 16 , the first sub-region AA1_1 and the second sub-region AA2_1 of the first region A1_1 may be defined as a portion of the first region A1_1 adjacent to the second region A2. In addition, the third sub-region AA3_1 may be defined as another portion of the first region A1_1 except the first sub-region AA1_1 and the second sub-region AA2_1. Herein, Figure 16 The illustrated first sub-area AA1_1 and the second sub-area AA2_1 are merely examples of a portion of the first area A1_1 adjacent to the second area A2. The portion of the first area A1_1 adjacent to the second area A2 may be differently arranged according to the design of the display panel PN.
[0283] Each of the first to third sub-regions AA1_1 to AA3_1 may include a plurality of pixels disposed to be spaced apart from each other along the first direction DR1 and the second direction DR2 . However, the present disclosure is not limited thereto.
[0284] The first to third sub-regions AA1_1 to AA3_1 may have different densities of the second pixels PX2. That is, the second pixels PX2 may be disposed in the first to third sub-regions AA1_1 to AA3_1 at different densities.
[0285] The ratio of the second pixels PX2 per unit area may gradually decrease along the first direction DR1 within the first area A1_1. For example, the ratio of the second pixels PX2 per unit area may gradually decrease in a direction from the first sub-area AA1_1 to the third sub-area AA3_1, that is, within the first area A1_1 as the distance from the boundary between the first area A1_1 and the second area A2 decreases.
[0286] For example, a plurality of first pixels PX1 and a plurality of second pixels PX2 may be disposed in the first sub-region AA1_1, and a plurality of second pixels PX2 may be disposed in the first sub-region AA1_1 at a first pixel density.
[0287] In addition, a plurality of first pixels PX1 and a plurality of second pixels PX2 may be provided in the second sub-region AA2_1. In addition, the plurality of second pixels PX2 may be provided in the second sub-region AA2_1 at a second pixel density lower than the first pixel density in the first sub-region AA1_1.
[0288] In addition, only a plurality of first pixels PX1 may be provided in the third sub-region AA3_1. In other words, no second pixel PX2 is provided in the third sub-region AA3_1. Accordingly, the third pixel density of the second pixel PX2 in the third sub-region AA3_1 may be zero (0), but is not limited thereto.
[0289] The first sub-region AA1_1 of the first region A1_1 may include a plurality of columns. In addition, the first sub-region AA1_1 of the first region A1_1 may include a plurality of second pixels PX2 sequentially provided in one column along the second direction DR2 and a plurality of first pixels PX1 sequentially provided in the remaining columns other than this column along the second direction DR2. More specifically, referring to Figure 16 , the first sub-region AA1_1 of the first region A1_1 may include a plurality of first pixels PX1 sequentially provided in each of the first column C1 and the second column C2 along the second direction DR2. In addition, the first sub-region AA1_1 of the first region A1_1 may include a plurality of second pixels PX2 sequentially provided in the third column C3. In this way, the plurality of second pixels PX2 may be provided in the third column C3 which is one of the three columns C1, C2, and C3, and the plurality of first pixels PX1 may be provided in the first column C1 and the second column C2 which are the other columns. In this case, the plurality of second pixels PX2 may be defined as being provided in the first sub-region AA1_1 at the first pixel density.
[0290] In addition, the second sub-region AA2_1 of the first region A1_1 may include a plurality of columns. In addition, the second sub-region AA2_1 of the first region A1_1 may include a plurality of second pixels PX2 arranged in sequence along the second direction DR2 in one column and a plurality of first pixels PX1 arranged in sequence along the second direction DR2 in the remaining columns other than this column. The number of columns in the first sub-region AA1_1 is less than the number of columns in the second sub-region AA2_1. More specifically, the second sub-region AA2_1 of the first region A1_1 may include a plurality of first pixels PX1 arranged in sequence along the second direction DR2 in each of the fourth column C4, the fifth column C5, the sixth column C6, and the seventh column C7. In addition, the second sub-region AA2_1 of the first region A1_1 may include a plurality of second pixels PX2 arranged in sequence along the second direction DR2 in the eighth column C8. In this way, a plurality of second pixels PX2 may be arranged in the eighth column C8, which is one of the five columns C4, C5, C6, C7, and C8, and a plurality of first pixels PX1 may be arranged in the fourth column C4, the fifth column C5, the sixth column C6, and the seventh column C7, which are the other columns. In this case, a plurality of second pixels PX2 may be defined as being arranged in the second sub-region AA2_1 at a second pixel density. Herein, as described above, the second pixel density in the second sub-region AA2_1 may be lower than the first pixel density in the first sub-region AA1_1.
[0291] In addition, a plurality of first pixels PX1 may be arranged only in a third sub-region AA3_1 of the first region A1_1 other than the first sub-region AA1_1 and the second sub-region AA2_1 where the second pixels PX2 are arranged. For example, a plurality of first pixels PX1 may be arranged in sequence along the second direction DR2 in a plurality of columns including the ninth column C9, the tenth column C10, the eleventh column C11, the twelfth column C12, and the thirteenth column C13, etc. in the third sub-region AA3_1. In this way, when only a plurality of first pixels PX1 are arranged in multiple columns, the second pixels PX2 may be defined as being arranged in the third sub-region AA3_1 at a third pixel density. For example, the third pixel density in the third sub-region AA3_1 may be lower than the second pixel density in the second sub-region AA2_1, which is lower than the first pixel density in the first sub-region AA1_1, and the third pixel density may have a value substantially equal to zero (0), but is not limited thereto.
[0292] In addition, when the display device 100 is driven in the first mode or the second mode, each of the plurality of first pixels PX1 and the plurality of second pixels PX2 arranged in the first region A1_1 of the display panel PN may be driven in the first state or the third state.
[0293] For example, as referred to above Figure 14As described, when each of the plurality of first pixels PX1 and the plurality of second pixels PX2 disposed in the first region A1_1 of the display panel PN is driven in the first state, the first light-emitting diode ED1 included in each of the plurality of first pixels PX1 disposed in the first region A1_1 emits light. Thus, the content can be provided from a first viewing angle. In addition, the third light-emitting diode ED3 included in each of the plurality of second pixels PX2 emits light. Thus, the content can be provided from a first viewing angle.
[0294] In addition, as described above with reference to Figure 15 When each of the plurality of first pixels PX1 and the plurality of second pixels PX2 disposed in the first region A1_1 is driven in the third state, both the first light-emitting diode ED1 and the second light-emitting diode ED2 included in each of the plurality of first pixels PX1 disposed in the first region A1_1 emit light. Thus, the content can be provided from a first viewing angle. Further, both the third light-emitting diode ED3 and the fourth light-emitting diode ED4 included in each of the plurality of second pixels PX2 emit light. Thus, the content can be provided from a first viewing angle.
[0295] When the display device 100 is driven in the first mode or the second mode, each of the plurality of first pixels PX1 and the plurality of second pixels PX2 disposed in the first region A1_1 of the display panel PN can be driven in the first state or the third state, and the content can be provided from a first viewing angle in the first region A1_1. This driving method is substantially the same as or similar to the driving method of each of the plurality of first pixels PX1 and the plurality of second pixels PX2 disposed in the first region A1 described above with reference to Figure 14 and Figure 15 wherein each is driven in the first state or the third state and the content is provided from a first viewing angle in the first region A1. Therefore, its redundant description will be omitted or briefly provided.
[0296] Figure 17 shows Figure 11 another example of the first region of the display panel.
[0297] Figure 17 shows a modified example of an exemplary embodiment associated with the pixel density of the second pixel PX2 disposed in the first region A1_2. Therefore, in Figure 12 the parts different from the above exemplary embodiment will be mainly described to avoid redundancy. Figure 17
[0298] Figure 17 Figure 11 shows an example of the first region A1_2 included in the Figure 11 display panel PN.
[0299] Referring to Figure 17 , the first region A1_2 of the display panel PN may include a plurality of sub-regions such as a first sub-region AA1_2, a second sub-region AA2_2, and a third sub-region AA3_2 that are sequentially arranged along the first direction DR1. For example, the second sub-region AA2_2 may be adjacent to the first sub-region AA1_2 along the first direction DR1. In addition, the third sub-region AA3_2 may be adjacent to the second sub-region AA2_2 along the first direction DR1. In addition, the second sub-region AA2_2 may be disposed between the first sub-region AA1_2 and the third sub-region AA3_2, but is not limited thereto.
[0300] Refer to Figure 11 and Figure 17 , the first sub-region AA1_2 and the second sub-region AA2_2 of the first region A1_2 may be defined as the part of the first region A1_2 adjacent to the second region A2. In addition, the third sub-region AA3_2 may be defined as another part of the first region A1_2 other than the first sub-region AA1_2 and the second sub-region AA2_2. Herein, Figure 17 the first sub-region AA1_2 and the second sub-region AA2_2 shown are merely examples of the part of the first region A1_2 adjacent to the second region A2. The part of the first region A1_2 adjacent to the second region A2 may be set differently according to the design of the display panel PN.
[0301] Each of the first sub-region AA1_2 to the third sub-region AA3_2 may include a plurality of pixels that are spaced apart from each other along the first direction DR1 and the second direction DR2.
[0302] The first sub-region AA1_2 to the third sub-region AA3_2 may have second pixels PX2 with different densities. That is, the second pixels PX2 may be set at different densities in the first sub-region AA1_2 to the third sub-region AA3_2.
[0303] The ratio of the second pixels PX2 per unit area may gradually decrease along the first direction DR1 within the first region A1_2. For example, the ratio of the second pixels PX2 per unit area may decrease gradually in the direction from the first sub-region AA1_2 to the third sub-region AA3_2, that is, within the first region A1_2 as the distance from the boundary between the first region A1_2 and the second region A2 increases.
[0304] For example, a plurality of first pixels PX1 and a plurality of second pixels PX2 may be disposed in the first sub-region AA1_2, and the plurality of second pixels PX2 may be set at a first pixel density in the first sub-region AA1_2.
[0305] In addition, a plurality of first pixels PX1 and a plurality of second pixels PX2 may be provided in the second sub-region AA2_2. In addition, the plurality of second pixels PX2 may be provided in the second sub-region AA2_2 at a second pixel density lower than the first pixel density in the first sub-region AA1_2.
[0306] In addition, only a plurality of first pixels PX1 may be provided in the third sub-region AA3_2. In other words, no second pixel PX2 may be provided in the third sub-region AA3_2. Accordingly, the third pixel density of the second pixel PX2 in the third sub-region AA3_2 may be zero (0).
[0307] The first sub-region AA1_2 of the first region A1_2 may include a plurality of columns. In addition, the first sub-region AA1_2 of the first region A1_2 may include a plurality of second pixels PX2 sequentially provided in one column along the second direction DR2 and a plurality of first pixels PX1 sequentially provided in the remaining columns other than this column along the second direction DR2. More specifically, referring to Figure 17 , the first sub-region AA1_2 of the first region A1_2 may include a plurality of first pixels PX1 sequentially provided in each of the first column C1, the second column C2, and the third column C3 along the second direction DR2. In addition, the first sub-region AA1_2 of the first region A1_2 may include a plurality of second pixels PX2 sequentially provided in the fourth column C4. In this way, the plurality of second pixels PX2 may be provided in the fourth column C4 which is one of the four columns C1, C2, C3, and C4, and the plurality of first pixels PX1 may be provided in the other three columns C1, C2, and C3. In this case, the plurality of second pixels PX2 may be defined as being provided in the first sub-region AA1_2 at the first pixel density.
[0308] In addition, the second sub-region AA2_2 of the first region A1_2 may include a plurality of columns. In addition, the second sub-region AA2_2 of the first region A1_2 may include a plurality of second pixels PX2 arranged in sequence along the second direction DR2 in one column and a plurality of first pixels PX1 arranged in sequence along the second direction DR2 in the remaining columns other than this column. The number of columns in the first sub-region AA1_2 is less than the number of columns in the second sub-region AA2_2. The second sub-region AA2_2 of the first region A1_2 may include a plurality of first pixels PX1 arranged in sequence along the second direction DR2 in each of the fifth column C5, sixth column C6, seventh column C7, eighth column C8, ninth column C9, and tenth column C10. In addition, the second sub-region AA2_2 of the first region A1_2 may include a plurality of second pixels PX2 arranged in sequence along the second direction DR2 in the eleventh column C11 adjacent to the tenth column C10 in the first direction DR1. In this way, a plurality of second pixels PX2 may be arranged in the eleventh column C11, which is one of the seven columns C5, C6, C7, C8, C9, C10, and C11, and a plurality of first pixels PX1 may be arranged in the other six columns C5, C6, C7, C8, C9, and C10. In this case, a plurality of second pixels PX2 may be defined as being arranged in the second sub-region AA2_2 at a second pixel density. As described above herein, the second pixel density in the second sub-region AA2_2 may be lower than the first pixel density in the first sub-region AA1_2.
[0309] In addition, a plurality of first pixels PX1 may be arranged only in a third sub-region AA3_2 of the first region A1_2 other than the first sub-region AA1_2 and the second sub-region AA2_2 where the second pixels PX2 are arranged. For example, a plurality of first pixels PX1 may be arranged in sequence along the second direction DR2 in a plurality of columns including the twelfth column C12 and the thirteenth column C13, etc. in the third sub-region AA3_2. In this way, when only a plurality of first pixels PX1 are arranged in a plurality of columns, the second pixels PX2 may be defined as being arranged in the third sub-region AA3_2 at a third pixel density. For example, the third pixel density in the third sub-region AA3_2 may be lower than the second pixel density in the second sub-region AA2_2, which is lower than the first pixel density in the first sub-region AA1_2, and the third pixel density may have a value substantially equal to zero (0), but is not limited thereto.
[0310] In addition, when the display device 100 is driven in the first mode or the second mode, each pixel of the plurality of first pixels PX1 and the plurality of second pixels PX2 arranged in the first region A1_2 of the display panel PN may be driven in the first state or the third state.
[0311] For example, as referred to above Figure 14As described, when each of the plurality of first pixels PX1 and the plurality of second pixels PX2 disposed in the first region A1_2 is driven in the first state, the first light-emitting diode ED1 included in each of the plurality of first pixels PX1 disposed in the first region A1_2 emits light. Accordingly, content can be provided from a first viewing angle. In addition, the third light-emitting diode ED3 included in each of the plurality of second pixels PX2 emits light. Accordingly, content can be provided from a first viewing angle.
[0312] In addition, as described above with reference to Figure 15 when each of the plurality of first pixels PX1 and the plurality of second pixels PX2 disposed in the first region A1_2 is driven in the third state, both the first light-emitting diode ED1 and the second light-emitting diode ED2 included in each of the plurality of first pixels PX1 disposed in the first region A1_2 emit light. Accordingly, content can be provided from a first viewing angle. Further, both the third light-emitting diode ED3 and the fourth light-emitting diode ED4 included in each of the plurality of second pixels PX2 emit light. Accordingly, content can be provided from a first viewing angle.
[0313] When the display device 100 is driven in the first mode or the second mode, each of the plurality of first pixels PX1 and the plurality of second pixels PX2 disposed in the first region A1_2 of the display panel PN can be driven in the first state or the third state, and content can be provided from a first viewing angle in the first region A1_2. This driving method is substantially the same as or similar to the driving method of each of the plurality of first pixels PX1 and the plurality of second pixels PX2 disposed in the first region A1 and driven in the first state or the third state and providing content from a first viewing angle in the first region A1, as described above with reference to Figure 14 and Figure 15 Therefore, redundant descriptions thereof will be omitted or briefly provided.
[0314] Figure 18 illustrates Figure 11 another example of the first region of the display panel.
[0315] Figure 18 illustrates a modified example of an exemplary embodiment associated with the arrangement of the second pixels PX2 disposed in the first region A1_3. Therefore, in Figure 12 the parts that are different from the above exemplary embodiment will be mainly described to avoid redundancy. Figure 18
[0316] Figure 18 illustrates an example of the first region A1_3 included in the Figure 11 display panel PN.
[0317] Reference Figure 18 , the first region A1_3 of the display panel PN may include first sub-regions AA1_3 to nth sub-regions AAn_3 (n is an integer greater than 0) arranged in sequence along the first direction DR1. For example, the second sub-region AA2_3 may be arranged adjacent to the first sub-region AA1_3 along the first direction DR1. In addition, the first sub-region AA1_3 and the second sub-region AA2_3 of the first region A1_3 may be defined as the part of the first region A1_3 adjacent to the second region A2, and the nth sub-region AAn_3 may be defined as the sub-region in the first region A1_3 that is farthest from the second region A2.
[0318] A plurality of second pixels PX2 and a plurality of first pixels PX1 may be disposed throughout the first region A1_3. For example, each of the first sub-regions AA1_3 to nth sub-regions AAn_3 may include a plurality of first pixels PX1 and a plurality of second pixels PX2. For example, each of the first sub-regions AA1_3 to nth sub-regions AAn_3 may include a plurality of first pixels PX1 and a plurality of second pixels PX2 spaced apart from each other along the first direction DR1 and the second direction DR2.
[0319] The first sub-regions AA1_3 to nth sub-regions AAn_3 may have second pixels PX2 with different densities. That is, the second pixels PX2 may be arranged with different densities in the first sub-regions AA1_3 to nth sub-regions AAn_3.
[0320] The ratio of the second pixels PX2 per unit area may gradually decrease along the first direction DR1 within the first region A1_3. For example, the ratio of the second pixels PX2 per unit area may decrease in the direction from the first sub-region AA1_3 to the nth sub-region AAn_3, that is, within the first region A1_3 as the distance from the boundary between the first region A1_3 and the second region A2 gradually increases.
[0321] For example, a plurality of first pixels PX1 and a plurality of second pixels PX2 may be disposed in the first sub-region AA1_3, and the plurality of second pixels PX2 may be arranged at a first pixel density in the first sub-region AA1_3. Herein, the first pixel density of the plurality of second pixels PX2 in the first sub-region AA1_3 may be substantially the same as or similar to the first pixel density of the plurality of second pixels PX2 in the first sub-region AA1 of the first region A1 described above Figure 12 . Therefore, its redundant description will be omitted or briefly provided.
[0322] In addition, a plurality of first pixels PX1 and a plurality of second pixels PX2 may be provided in the second sub-region AA2_3. In addition, the plurality of second pixels PX2 may be provided in the second sub-region AA2_3 at a second pixel density lower than the first pixel density. In this document, the second pixel density of the plurality of second pixels PX2 in the second sub-region AA2_3 may be substantially the same as or similar to the second pixel density of the plurality of second pixels PX2 in the second sub-region AA2 of the first region A1 described above with reference to Figure 12 Thus, redundant descriptions thereof will be omitted or provided briefly.
[0323] In addition, a plurality of first pixels PX1 and a plurality of second pixels PX2 may be provided in the nth sub-region AAn_3. In addition, the plurality of second pixels PX2 may be provided in the nth sub-region AAn_3 at a fourth pixel density lower than the second pixel density.
[0324] The nth sub-region AAn_3 of the first region A1_3 may include a plurality of columns. In addition, the nth sub-region AAn_3 of the first region A1_3 may include a plurality of second pixels PX2 arranged in sequence along the second direction DR2 in one column and a plurality of first pixels PX1 arranged in sequence along the second direction DR2 in the remaining columns other than this column. More specifically, the nth sub-region AAn_3 of the first region A1_3 may include a plurality of first pixels PX1 arranged in sequence along the second direction DR2 in a plurality of columns, the plurality of columns including the (m - 2)th column Cm-2 (m is an integer greater than 0) in the nth sub-region AAn_3 and the (m - 1)th column Cm-1 adjacent to the (m - 2)th column Cm-2 in the first direction DR1 and not including the mth column Cm adjacent to the (m - 1)th column Cm-1 in the first direction DR1. In addition, the nth sub-region AAn_3 may include a plurality of second pixels PX2 arranged in sequence along the second direction DR2 in the mth column. In this way, the plurality of second pixels PX2 may be provided in one column Cm among the plurality of columns Cm-2, Cm-1, and Cm, and the plurality of first pixels PX1 may be provided in the other columns Cm-2 and Cm-1. In this case, the plurality of second pixels PX2 may be defined as being provided in the nth sub-region AAn_3 at the fourth pixel density. In this document, as described above, the fourth pixel density may be lower than the second pixel density which is lower than the first pixel density.
[0325] In this way, the second pixel PX2 may be provided in the entire first region A1_3 included in the display panel PN of the display device 100 according to the Figure 18 embodiment shown.
[0326] In addition, when driving the display device 100 in the first mode or the second mode, each of the plurality of first pixels PX1 and the plurality of second pixels PX2 provided in the first region A1_3 of the display panel PN can be driven in the first state or the third state.
[0327] For example, as described above with reference to Figure 14 When each of the plurality of first pixels PX1 and the plurality of second pixels PX2 provided in the first region A1_3 is driven in the first state, the first light-emitting diode ED1 included in each of the plurality of first pixels PX1 provided in the first region A1_3 emits light. Therefore, the content can be provided from the first viewing angle. In addition, the third light-emitting diode ED3 included in each of the plurality of second pixels PX2 emits light. Therefore, the content can be provided from the first viewing angle.
[0328] In addition, as described above with reference to Figure 15 When each of the plurality of first pixels PX1 and the plurality of second pixels PX2 provided in the first region A1_3 is driven in the third state, both the first light-emitting diode ED1 and the second light-emitting diode ED2 included in each of the plurality of first pixels PX1 provided in the first region A1_3 emit light. Therefore, the content can be provided from the first viewing angle. Further, both the third light-emitting diode ED3 and the fourth light-emitting diode ED4 included in each of the plurality of second pixels PX2 emit light. Therefore, the content can be provided from the first viewing angle.
[0329] When driving the display device 100 in the first mode or the second mode, each of the plurality of first pixels PX1 and the plurality of second pixels PX2 provided in the first region A1_3 of the display panel PN can be driven in the first state or the third state, and the content can be provided from the first viewing angle in the first region A1_1. This driving method is basically the same as or similar to the driving method of each of the plurality of first pixels PX1 and the plurality of second pixels PX2 provided in the first region A1 described above with reference to Figure 14 and Figure 15 where each is driven in the first state or the third state and the content is provided from the first viewing angle in the first region A1. Therefore, its redundant description will be omitted or briefly provided.
[0330] In the display device 100 according to an exemplary embodiment of the present disclosure, only the first pixel PX1 including the first type of lens 161 that refracts light at the first viewing angle is disposed in the first region A1 that provides content at the first viewing angle. In addition, the second pixel PX2 having the same lens structure as the third pixel PX3 disposed in the second region A2 (i.e., including the second type of lens 162 that refracts light at the second viewing angle and the first type of lens 161) is disposed in the first region A1. Accordingly, the visibility of the boundary between the first region A1 and the second region A2 can be reduced or minimized.
[0331] In addition, when driving each of the first pixel PX1 and the second pixel PX2 in the third state as compared to the first state in which the light-emitting diodes ED1 and ED2 included only in the first pixel PX1 and the light-emitting diodes ED3 and ED4 included in the second pixel PX2 emit light in the first region A1 that provides content at the first viewing angle, content can be provided at the first viewing angle as in the first state. However, since all the light-emitting diodes emit light, the brightness of the content can be increased. That is, when the same data signal is written and the first region A1 is driven in the third state, the brightness can be higher than when the first region A1 is driven in the first state. Accordingly, the power consumption for increasing the brightness can be reduced or minimized.
[0332] The display device according to an exemplary embodiment of the present disclosure can also be described as follows:
[0333] The display device according to an exemplary embodiment of the present disclosure includes a display panel that is divided into a first region including a plurality of first pixels and a plurality of second pixels and a second region including a plurality of third pixels adjacent to the first region in a direction opposite to the first direction, wherein each of the plurality of first pixels includes a first light-emitting diode, a second light-emitting diode, a first optical member that emits light generated from the first light-emitting diode at the first viewing angle, and a second optical member that emits light generated from the second light-emitting diode at the first viewing angle, and each of the plurality of second pixels includes a third light-emitting diode, a fourth light-emitting diode, a third optical member that emits light generated from the third light-emitting diode at the first viewing angle, and a fourth optical member that emits light generated from the fourth light-emitting diode at a second viewing angle lower than the first viewing angle, and each of the plurality of third pixels includes a fifth light-emitting diode, a sixth light-emitting diode, a fifth optical member that emits light generated from the fifth light-emitting diode at the first viewing angle, and a sixth optical member that emits light generated from the sixth light-emitting diode at the second viewing angle. In addition, the plurality of second pixels are disposed in corresponding regions of the first region at different pixel densities.
[0334] A plurality of first pixels and a plurality of second pixels may be disposed in at least a part of the first region, and only the plurality of first pixels may be disposed in another part of the first region.
[0335] The first region may include a first sub-region adjacent to the second region in a first direction, a second sub-region adjacent to the first sub-region in the first direction, and a third sub-region adjacent to the second sub-region in the first direction, and the plurality of second pixels are respectively disposed in the first sub-region to the third sub-region with different pixel densities.
[0336] The pixel density of the plurality of second pixels may gradually decrease in the direction from the first sub-region to the third sub-region.
[0337] The plurality of second pixels may be disposed in the first sub-region with a first pixel density, and the plurality of second pixels may be disposed in the second sub-region with a second pixel density lower than the first pixel density.
[0338] The plurality of second pixels may be disposed in the third sub-region with a third pixel density lower than the second pixel density.
[0339] The third pixel density may have a value of zero (0).
[0340] In the first sub-region, the plurality of first pixels may be sequentially disposed in a first column in a second direction different from the first direction, and the plurality of second pixels may be sequentially disposed in a second column adjacent to the first column in the first direction in the second direction, and in the second sub-region, the plurality of first pixels may be sequentially disposed in each of a third column adjacent to the second column in the first direction and a fourth column adjacent to the third column in the first direction in the second direction, and the plurality of second pixels may be sequentially disposed in a fifth column adjacent to the fourth column in the first direction in the second direction.
[0341] In the first sub-region, the plurality of first pixels may be sequentially disposed in each of a first column and a second column adjacent to the first column in the first direction in a second direction different from the first direction, and the plurality of second pixels may be sequentially disposed in a third column adjacent to the second column in the first direction in the second direction, and in the second sub-region, the plurality of first pixels may be sequentially disposed in each of a fourth column adjacent to the third column in the first direction, a fifth column adjacent to the fourth column in the first direction, a sixth column adjacent to the fifth column in the first direction, and a seventh column adjacent to the sixth column in the first direction in the second direction, and the plurality of second pixels may be sequentially disposed in an eighth column adjacent to the seventh column in the first direction in the second direction.
[0342] In a first sub-region, a plurality of first pixels may be sequentially disposed in each of a first column, a second column adjacent to the first column in a first direction, and a third column adjacent to the second column in the first direction in a second direction different from the first direction, and a plurality of second pixels may be sequentially disposed in a fourth column adjacent to the third column in the first direction in the second direction, and in a second sub-region, a plurality of first pixels may be sequentially disposed in each of a fifth column adjacent to the fourth column in the first direction, a sixth column adjacent to the fifth column in the first direction, a seventh column adjacent to the sixth column in the first direction, an eighth column adjacent to the seventh column in the first direction, a ninth column adjacent to the eighth column in the first direction, and a tenth column adjacent to the ninth column in the first direction in the second direction, and a plurality of second pixels may be sequentially disposed in an eleventh column adjacent to the tenth column in the first direction in the second direction.
[0343] Only a plurality of first pixels may be disposed in a third sub-region.
[0344] A plurality of first pixels and a plurality of second pixels may be disposed in the entire first region.
[0345] The first region may include a first sub-region to an nth sub-region (n is an integer greater than 0) sequentially disposed in a first direction from a second region, and a plurality of second pixels may be disposed in the first sub-region to the nth sub-region at different pixel densities, respectively.
[0346] The pixel density of the plurality of second pixels gradually decreases in a direction from the first sub-region to the nth sub-region.
[0347] A first light-emitting diode included in each of the plurality of first pixels in the first region emits light, a second light-emitting diode included in each of the plurality of first pixels does not emit light, a third light-emitting diode included in each of the plurality of second pixels in the first region emits light, and a fourth light-emitting diode included in each of the plurality of second pixels does not emit light.
[0348] Each of the first light-emitting diode and the second light-emitting diode included in each of the plurality of first pixels in the first region emits light, and each of the third light-emitting diode and the fourth light-emitting diode included in each of the plurality of second pixels in the first region emits light.
[0349] In a first mode, a fifth light-emitting diode in each of a plurality of third pixels included in a second region emits light and a sixth light-emitting diode in each of the plurality of third pixels does not emit light, and in a second mode different from the first mode, the fifth light-emitting diode in each of the plurality of third pixels included in the second region does not emit light and the sixth light-emitting diode in each of the plurality of third pixels emits light.
[0350] Each of the first optical member, the second optical member, the third optical member, and the fifth optical member may have a first shape, and each of the fourth optical member and the sixth optical member may have a second shape different from the first shape.
[0351] The first light-emitting diode emits light having the same color as the light emitted by the second light-emitting diode, the third light-emitting diode emits light having the same color as the light emitted by the fourth light-emitting diode, and the fifth light-emitting diode emits light having the same color as the light emitted by the sixth light-emitting diode.
[0352] The display device according to one or more exemplary embodiments of the present disclosure can be applied to mobile devices, video telephones, smart watches, watch phones, wearable devices, foldable devices, rollable devices, bendable devices, flexible devices, curved devices, variable devices, sliding devices, electronic notebooks, e-books, portable multimedia players (PMPs), personal digital assistants (PDAs), MP3 players, mobile medical devices, desktop personal computers (PCs), laptop PCs, netbook computers, workstations, navigation devices, automotive navigation devices, automotive display devices, automotive devices, theater devices, theater display devices, TVs, wallpaper display devices, signage devices, gaming machines, laptops, monitors, cameras, camcorders, household appliances, etc., but the embodiments of the present disclosure are not limited thereto.
[0353] Although the exemplary embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the present disclosure is not limited thereto and can be embodied in many different forms without departing from the technical concept of the present disclosure. Therefore, the exemplary embodiments of the present disclosure are provided for illustrative purposes only and are not intended to limit the technical concept of the present disclosure. The scope of the technical concept of the present disclosure is not limited thereto. Therefore, it should be understood that the above exemplary embodiments are illustrative in all respects and do not limit the present disclosure. The protection scope of the present disclosure should be construed based on the following claims, and all technical concepts within the equivalent scope should be understood to fall within the scope of the present disclosure.
[0354] Cross-reference to related applications
[0355] This application claims the priority and benefit of Korean Patent Application No. 10-2023-0193506, filed with the Korean Intellectual Property Office on December 27, 2023, the disclosure of which is incorporated herein by reference as if fully set forth herein.
Claims
1. A display device, comprising: a display panel, the display panel being divided into a first region including a plurality of first pixels and a plurality of second pixels and a second region adjacent to the first region in a direction opposite to the first direction including a plurality of third pixels, Each of the plurality of first pixels includes a first light emitting diode, a second light emitting diode, a first optical component that emits light generated from the first light emitting diode at a first viewing angle, and a second optical component that emits light generated from the second light emitting diode at the first viewing angle, and Each of the plurality of second pixels includes a third light emitting diode, a fourth light emitting diode, a third optical member emitting light generated from the third light emitting diode at the first viewing angle, and a fourth optical member emitting light generated from the fourth light emitting diode at a second viewing angle lower than the first viewing angle, and Each of the plurality of third pixels includes a fifth light emitting diode, a sixth light emitting diode, a fifth optical element that emits light generated from the fifth light emitting diode at the first viewing angle, and a sixth optical element that emits light generated from the sixth light emitting diode at the second viewing angle.
2. The display device according to claim 1, wherein: The plurality of second pixels are disposed in corresponding areas of the first area at different pixel densities.
3. The display device according to claim 2, wherein: The plurality of first pixels and the plurality of second pixels are disposed in at least a portion of the first region, and only the plurality of first pixels are disposed in another portion of the first region.
4. The display device according to claim 3, wherein: The first region includes a first sub-region adjacent to the second region in the first direction, a second sub-region adjacent to the first sub-region in the first direction, and a third sub-region adjacent to the second sub-region in the first direction, and The plurality of second pixels are respectively arranged in the first to third sub-areas with different pixel densities.
5. The display device according to claim 4, wherein: A pixel density of the plurality of second pixels gradually decreases in a direction from the first sub-region to the third sub-region.
6. The display device according to claim 5, wherein: The plurality of second pixels are arranged in the first sub-area at a first pixel density, and The plurality of second pixels are disposed in the second sub-region at a second pixel density lower than the first pixel density.
7. The display device according to claim 6, wherein: The plurality of second pixels are disposed in the third sub-region at a third pixel density lower than the second pixel density.
8. The display device according to claim 7, wherein: The third pixel density has a value of zero.
9. The display device according to claim 4, wherein: In the first sub-area, the plurality of first pixels are sequentially arranged in a first column in a second direction different from the first direction, and the plurality of second pixels are sequentially arranged in a second column adjacent to the first column in the first direction in the second direction, and In the second sub-area, the multiple first pixels are arranged sequentially in the second direction in each of the third column adjacent to the second column in the first direction and the fourth column adjacent to the third column in the first direction, and the multiple second pixels are arranged sequentially in the second direction in the fifth column adjacent to the fourth column in the first direction.
10. The display device according to claim 9, wherein: In the third sub-area, the multiple first pixels are arranged sequentially in the second direction in each of the sixth column adjacent to the fifth column in the first direction, the seventh column adjacent to the sixth column in the first direction, the eighth column adjacent to the seventh column in the first direction, the ninth column adjacent to the eighth column in the first direction, the tenth column adjacent to the ninth column in the first direction, the eleventh column adjacent to the tenth column in the first direction, the twelfth column adjacent to the eleventh column in the first direction, and the thirteenth column adjacent to the twelfth column in the first direction.
11. The display device according to claim 4, wherein: In the first sub-area, the plurality of first pixels are sequentially arranged in a first column and each of a second column adjacent to the first column in the first direction in a second direction different from the first direction, and the plurality of second pixels are sequentially arranged in a third column adjacent to the second column in the first direction in the second direction, and In the second sub-area, the multiple first pixels are arranged sequentially in the second direction in each of a fourth column adjacent to the third column in the first direction, a fifth column adjacent to the fourth column in the first direction, a sixth column adjacent to the fifth column in the first direction, and a seventh column adjacent to the sixth column in the first direction, and the multiple second pixels are arranged sequentially in the second direction in an eighth column adjacent to the seventh column in the first direction.
12. The display device according to claim 11, wherein: In the third sub-area, the multiple first pixels are arranged sequentially in the second direction in each of a ninth column adjacent to the eighth column in the first direction, a tenth column adjacent to the ninth column in the first direction, an eleventh column adjacent to the tenth column in the first direction, a twelfth column adjacent to the eleventh column in the first direction, and a thirteenth column adjacent to the twelfth column in the first direction.
13. The display device according to claim 4, wherein: In the first sub-area, the plurality of first pixels are sequentially arranged in each of a first column, a second column adjacent to the first column in the first direction, and a third column adjacent to the second column in the first direction in a second direction different from the first direction, and the plurality of second pixels are sequentially arranged in a fourth column adjacent to the third column in the first direction in the second direction, and In the second sub-area, the multiple first pixels are arranged sequentially in the second direction in each of the fifth column adjacent to the fourth column in the first direction, the sixth column adjacent to the fifth column in the first direction, the seventh column adjacent to the sixth column in the first direction, the eighth column adjacent to the seventh column in the first direction, the ninth column adjacent to the eighth column in the first direction, and the tenth column adjacent to the ninth column in the first direction, and the multiple second pixels are arranged sequentially in the second direction in the eleventh column adjacent to the tenth column in the first direction.
14. The display device according to claim 13, wherein: In the third sub-region, the plurality of first pixels are sequentially arranged in each of a twelfth column adjacent to the eleventh column in the first direction and a thirteenth column adjacent to the twelfth column in the first direction in the second direction.
15. The display device according to claim 4, wherein: Only the plurality of first pixels are disposed in the third sub-region.
16. The display device according to claim 2, wherein: The plurality of first pixels and the plurality of second pixels are disposed throughout the first region.
17. The display device according to claim 16, wherein: The first region includes a first sub-region to an nth sub-region sequentially arranged along the first direction from the second region, where n is an integer greater than 0, and The plurality of second pixels are respectively arranged in the first sub-region to the nth sub-region at different pixel densities.
18. The display device according to claim 17, wherein: The pixel density of the plurality of second pixels gradually decreases in a direction from the first sub-region to the nth sub-region.
19. The display device according to claim 2, wherein: The first light emitting diode included in each of the plurality of first pixels in the first area emits light, and the second light emitting diode included in each of the plurality of first pixels does not emit light, and The third light emitting diode included in each of the plurality of second pixels in the first area emits light, and the fourth light emitting diode included in each of the plurality of second pixels does not emit light.
20. The display device according to claim 2, wherein: Each of the first light emitting diode and the second light emitting diode included in each of the plurality of first pixels in the first area emits light, and Each of the third light emitting diode and the fourth light emitting diode included in each of the plurality of second pixels in the first area emits light.
21. The display device according to claim 2, wherein: In the first mode, the fifth light emitting diode included in each of the plurality of third pixels in the second area emits light, and the sixth light emitting diode included in each of the plurality of third pixels does not emit light, and In a second mode different from the first mode, the fifth light emitting diode included in each of the plurality of third pixels of the second area does not emit light, and the sixth light emitting diode included in each of the plurality of third pixels emits light.
22. The display device according to claim 2, wherein: Each of the first optical member, the second optical member, the third optical member, and the fifth optical member has a first shape, and Each of the fourth optical member and the sixth optical member has a second shape different from the first shape.
23. The display device according to claim 2, wherein: The first light emitting diode emits light of the same color as the light emitted by the second light emitting diode, The third light emitting diode emits light of the same color as the light emitted by the fourth light emitting diode, and The fifth light emitting diode emits light of the same color as the light emitted by the sixth light emitting diode.