Light-emitting display panel and light-emitting display device using the same

Abstract

A light-emitting display panel (100) can have a display area (DA) comprising subpixels (P) and a non-display area outside the display area (DA), each of the subpixels (P) comprising a first light-emitting unit (LU1) configured to be driven by a first viewing-angle control transistor (Tvc1) and a second light-emitting unit (LU2) configured to be driven by a second viewing-angle control transistor (Tvc2). Furthermore, the shape of a first lens (LZ1) contained in the first light-emitting unit (LU1) differs from the shape of a second lens (LZ2) contained in the second light-emitting unit (LU2), and the polarity type of the first viewing-angle control transistor (Tvc1) differs from the polarity type of the second viewing-angle control transistor (Tvc2).

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Korean Patent Application No. 10-2023-0144944, filed on October 26, 2023 in the Republic of Korea. BACKGROUND OF THE INVENTION

[0002] The present disclosure relates to a light-emitting display panel and a light-emitting display device using the same. DISCUSSION OF THE RELATED TECHNOLOGY

[0003] A plurality of light-emitting display devices for providing information or content to a driver and a passenger may be installed on a vehicle.

[0004] Of the light-emitting display devices installed on a vehicle, a light-emitting display device installed on a dashboard is becoming larger and larger.

[0005] However, since a viewing angle of a display device installed on a dashboard is fixed, it may be uncomfortable for the driver and front passenger to watch videos in certain situations. For example, the light-emitting display device may be included in a vehicle and provide various information to a driver and a front passenger. However, the light-emitting display device may display content in the vehicle or cause bright lights in the vehicle to distract the driver, which may compromise safety. Therefore, there is a need for a display device capable of selectively controlling the viewing angle and restricting the displayed content so as not to disrupt the driver's concentration and improve safety, while also enhancing the passenger's comfort and experience.

[0006] The background described above is part of the present disclosure for developing the present disclosure, or is technical information acquired through a development process of the present disclosure, but cannot be regarded as the known prior art disclosed to the public before the disclosure of the present disclosure. OVERVIEW OF REVELATION

[0007] Accordingly, the present disclosure is directed to providing a light emitting display device that substantially obviates one or more problems due to limitations and disadvantages of the related art.

[0008] One aspect of the present disclosure is directed to providing a light-emitting display panel and a light-emitting display device using the same, in which polarity types of a first viewing angle control transistor and a second viewing angle control transistor provided for controlling a viewing angle in a subpixel are different from each other.

[0009] Another aspect of the present disclosure is directed to providing a light-emitting display panel and a light-emitting display device using the same, in which only a first light-emitting unit or only a second light-emitting unit is driven in each of light-emitting regions and thus an image having a first viewing angle is output or an image having a second viewing angle is output.

[0010] Additional advantages and features of the disclosure will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following or may be learned from practice of the disclosure. The objects and other advantages of the disclosure may be realized and attained by the structure particularly pointed out in the written description and the accompanying drawings.

[0011] To achieve these and other advantages and in accordance with the purpose of the disclosure, as embodied and broadly described herein, a light-emitting display panel, a light-emitting display device, and a display apparatus are provided according to the independent claims. Further embodiments are described in the dependent claims. To achieve the above and other advantages and in accordance with the purpose of the disclosure, as embodied and broadly described herein, a light-emitting display panel is provided having a display area provided with subpixels and a non-display area provided outside the display area, in which each of the subpixels has a first light-emitting unit controlled by a first viewing angle control transistor, and a second light-emitting unit,which is driven by a second viewing angle control transistor, wherein a first lens provided in the first light-emitting unit and a second lens provided in the second light-emitting unit have different shapes, and wherein a polarity type of the first viewing angle control transistor is different from a polarity type of the second viewing angle control transistor.

[0012] To achieve the above and other advantages, and in accordance with the purpose of the disclosure as embodied and broadly described herein, a light-emitting display device is provided having a display region provided with subpixels and a non-display region provided outside the display region, in which each of the subpixels has a first light-emitting unit driven by a first viewing angle control transistor and a second light-emitting unit driven by a second viewing angle control transistor, wherein a first viewing angle of light output from the first light-emitting unit is different from a second viewing angle of light output from the second light-emitting unit,the display area is divided into at least two light-emitting areas along a first direction, the display area is divided into at least two light-emitting areas along a second direction, which is different from the first direction, and only first light-emitting units or only second light-emitting units are controlled in each of the light-emitting areas.,

[0013] It is to be understood that both the foregoing general description and the following detailed description of the present disclosure are exemplary and explanatory and are intended to provide further explanation of the disclosure as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and, together with the description, serve to explain the principle of the disclosure. In the drawings: Fig. 1 is an exemplary diagram illustrating a configuration of a light-emitting display device according to an embodiment of the present disclosure; Fig. 2 is an exemplary diagram illustrating a structure of a subpixel applied in a light-emitting display device according to an embodiment of the present disclosure; Fig. 3 is an exemplary diagram illustrating a structure of a control driver applied to a light-emitting display device according to an embodiment of the present disclosure; Fig. 4 is an exemplary diagram illustrating a structure of a gate driver applied to a light-emitting display device according to an embodiment of the present disclosure; Fig. 5 is an exemplary diagram illustrating a structure of a data driver applied to a light-emitting display device according to an embodiment of the present disclosure; Fig. 6 is an exemplary diagram illustrating an internal structure of a vehicle in which a light-emitting display device according to an embodiment of the present disclosure is applied; Fig. 7A to Fig. 7F are exemplary diagrams illustrating how viewing angles of light-emitting regions in a light-emitting display panel may selectively change according to an embodiment of the present disclosure; Fig. 8 is an exemplary plan view schematically illustrating a structure of a subpixel of a light-emitting display panel according to an embodiment of the present disclosure; Fig. 9A and Fig. 9B are exemplary perspective views illustrating structures of a first lens and a second lens of a subpixel applied in a light-emitting display panel according to an embodiment of the present disclosure; Fig. 10 is an exemplary plan view illustrating a structure of three subpixels applied to a light-emitting display panel according to an embodiment of the present disclosure; Fig. 11 is an exemplary cross-sectional view taken along a line I-I' shown in Fig. 10, according to an embodiment of the present disclosure; Fig. 12 is an exemplary cross-sectional view taken along a line II-II' shown in Fig. 10, according to an embodiment of the present disclosure; Fig. 13 is an exemplary timing chart for explaining an example of a driving method of a light-emitting display device according to an embodiment of the present disclosure; and Fig. 14 is an exemplary diagram illustrating a connection structure of light-emitting regions and viewing angle control lines in a light-emitting display device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Reference will now be made in detail to the exemplary embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals are used throughout the drawings to refer to the same or similar parts.

[0016] Advantages and features of the present disclosure and methods for implementing them will be more fully understood by the following embodiments, which are described with reference to the accompanying drawings. However, the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0017] A shape, a size, a ratio, an angle, and a number disclosed in the drawings for describing embodiments of the present disclosure are merely an example, and therefore the present disclosure is not limited to the illustrated details. Like reference numerals refer to like elements throughout. In the following description, when the detailed description of the relevant known function or configuration unnecessarily obscures the important point of the present disclosure, the detailed description will be omitted. When the terms "having," "with," and "including" are used in the present disclosure, one more part may be added unless "only" is used. The singular terms may include the plural unless otherwise stated.

[0018] When designing an element, it is assumed that the element has a margin of error or tolerance, even if there is no explicit description of such a margin of error or tolerance.

[0019] When describing a spatial relationship, for example when describing a spatial relationship between two parts as “on”, “over”, “under” and “beside”, one or more other parts may be arranged between the two parts unless a more restrictive term, such as “immediate” or “direct”, is used.

[0020] When describing a temporal relationship, for example when describing the temporal sequence as, for example, "after", "subsequent", "next" and "before", a situation that is not continuous may be included unless a more restrictive term, such as "exactly", "immediate" or "direct", is used.

[0021] It should be understood that while the terms "first," "second," etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, a first element could be referred to as a second element, and similarly, a second element could be referred to as a first element, without departing from the scope of the present disclosure.

[0022] When describing elements of the present disclosure, the terms "first," "second," "A," "B," "(a)," "(b)," etc. may be used. These terms are intended to distinguish the corresponding elements from the other elements, and the basis, order, or number of the corresponding elements should not be limited by these terms. The phrase "connected," "coupled," or "attached" to another element or layer means that the element or layer may not only be directly connected or attached to another element or layer, but may also be indirectly connected or attached to another element or layer, with one or more intermediate elements or layers "disposed" or "interposed" between the elements or layers, unless otherwise specified.

[0023] The term "at least / at least one" should be understood to encompass any combination of one or more of the related listed elements. For example, the meaning of "at least one of a first element, a second element, and a third element" refers to the combination of any elements suggested by two or more of the first element, the second element, and the third element, as well as the first element, the second element, or the third element. Furthermore, the term "may" as used herein encompasses all meanings and definitions of the word "can."

[0024] Features of various embodiments of the present disclosure may be partially or fully coupled or combined with one another, and may be operated and technically controlled in various ways, as would be well understood by those skilled in the art. The embodiments of the present disclosure may be practiced independently of one another or together in an interdependent relationship.

[0025] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0026] Fig. 1 is an exemplary diagram illustrating a configuration of a light-emitting display device according to an embodiment of the present disclosure, Fig. 2 is an exemplary diagram illustrating a structure of a subpixel applied to a light-emitting display device according to an embodiment of the present disclosure, Fig. 3 is an exemplary diagram illustrating a structure of a control driver applied to a light-emitting display device according to an embodiment of the present disclosure, Fig. 4 is an exemplary diagram illustrating a structure of a gate driver applied to a light-emitting display device according to an embodiment of the present disclosure, and Fig. 5 is an exemplary diagram illustrating a structure of a data driver applied to a light-emitting display device according to an embodiment of the present disclosure.

[0027] A light-emitting display device according to an embodiment of the present disclosure may be any of an organic light-emitting diode display device, a quantum dot light-emitting diode display device, and an inorganic light-emitting diode display device. That is, a light-emitting display device according to an embodiment of the present disclosure may be an electroluminescence display device. Furthermore, a light-emitting display device according to an embodiment of the present disclosure may be a micro light-emitting diode display device.

[0028] A light-emitting display device according to an embodiment of the present disclosure can be used as various types of electronic devices. Electronic devices can be, for example, televisions, monitors, etc., and can be automotive electronic devices installed and used in a vehicle. In particular, a light-emitting display device according to an embodiment of the present disclosure can be mounted on a dashboard of a vehicle to provide a driver and a passenger with information and various images related to vehicle operation.For convenience of description, a light-emitting display device mounted on a dashboard of a vehicle to be used will be described below as an example of a light-emitting display device according to an embodiment of the present disclosure. However, in accordance with embodiments, the light-emitting display device may also be a standalone device (e.g., a wearable device, a smartphone, etc.).

[0029] The light-emitting display device according to an embodiment of the present disclosure may, as shown in Fig. 1, a light-emitting display panel 100 comprising a display area DA that displays an image and a non-display area NDA provided outside the display area DA, a gate driver 200 that supplies gate signals GS to a plurality of gate lines GL1 to GLg provided in the display area DA of the light-emitting display panel 100, a data driver 300 that supplies data voltages VData to a plurality of data lines DL1 to DLd provided in the display area DA of the light-emitting display panel 100, a control driver 400 (for example, a control device or a timing controller) that controls driving of the gate driver 200 and the data driver 300, and a power supply unit 500 that supplies power to the control driver 400, the gate driver 200, the data driver 300, and the light-emitting Display panel 100 supplies power.

[0030] First, the light-emitting display panel 100 may include a display area DA and a non-display area NDA. Gate lines GL1 to GLg, data lines DL1 to DLd, and subpixels P may be provided in the display area DA. Accordingly, an image may be displayed in the display area DA. Here, g and d are natural numbers. The non-display area NDA may surround the outer edge of the display area DA.

[0031] The subpixel P included in the light-emitting display panel 100 may, as shown in Fig. 2, a pixel drive circuit PDC comprising a switching transistor Tsw1, a storage capacitor Cst, a drive transistor Tdr, a first reference transistor Tsw2a, a second reference transistor Tsw2b, a first viewing angle control transistor Tvc1 and a second viewing angle control transistor Tvc2, and a first light-emitting device ED1 and a second light-emitting device ED2 connected to the pixel drive circuit PDC.

[0032] A first terminal of the drive transistor Tdr may be connected to a first voltage supply line through which a first voltage EVDD is supplied, and a second terminal of the drive transistor Tdr may be connected to the light-emitting device ED.

[0033] A first terminal of the switching transistor Tsw1 may be connected to a data line DL, a second terminal of the switching transistor Tsw1 may be connected to a first terminal of the storage capacitor Cst, and a gate of the switching transistor Tsw1 may be connected to a gate line GL.

[0034] A data voltage VData may be supplied from the data driver 300 through the data line DL. A gate signal GS may be supplied from the gate driver 200 through the gate line GL. The gate signal GS may include a gate pulse GP for turning on the switching transistor Tsw1 and a gate-off signal for turning off the switching transistor Tsw1.

[0035] The first reference transistor Tsw2a and the second reference transistor Tsw2b may be provided for measuring a threshold voltage of the driving transistor Tdr or a mobility or for supplying a reference voltage VREF to the pixel driving circuit PDC.

[0036] A first terminal of the first reference transistor Tsw2a may be connected to a reference line RL through which a reference voltage VREF is supplied, a second terminal of the first reference transistor Tsw2a may be connected to a second terminal of the first viewing angle control transistor Tvc1 and the first light-emitting device ED1, and a gate of the first reference transistor Tsw2a may be connected to a reference control line RCL through which a reference control signal RCS is supplied.

[0037] A first terminal of the second reference transistor Tsw2b may be connected to a reference line RL through which the reference voltage VREF is supplied, a second terminal of the second reference transistor Tsw2b may be connected to a second terminal of the second viewing angle control transistor Tvc2 and the second light-emitting device ED2, and a gate of the second reference transistor Tsw2b may be connected to the reference control line RCL through which the reference control signal RCS is supplied.

[0038] The reference line RL may be connected to the data driver 300 and may be connected to the power supply unit 500 through the data driver 300. For example, the reference voltage VREF supplied from the power supply unit 500 may be supplied to the subpixels through the reference line RL, detection signals transmitted from the subpixels P may be converted into digital detection signals in the data driver 300, and the digital-to-digital detection signals may be transmitted to the control driver 400.

[0039] A first terminal of the storage capacitor Cst may be connected to a second terminal of the switching transistor Tsw1, and a second terminal of the storage capacitor Cst may be connected to a gate of the drive transistor Tdr.

[0040] A first terminal of the first viewing angle control transistor Tvc1 may be connected to the second terminal of the driving transistor Tdr, a second terminal of the first viewing angle control transistor Tvc1 may be connected to the first light-emitting device ED1, and a gate of the first viewing angle control transistor Tvc1 may be connected to an n-th viewing angle control line VCLn.

[0041] A first terminal of the second viewing angle control transistor Tvc2 may be connected to the second terminal of the driving transistor Tdr, a second terminal of the second viewing angle control transistor Tvc2 may be connected to the second light-emitting device ED2, and a gate of the second viewing angle control transistor Tvc2 may be connected to the n-th viewing angle control line VCLn.

[0042] This means that the gate of the first viewing angle control transistor Tvc1 and the gate of the second viewing angle control transistor Tvc2 may be connected to the nth viewing angle control line VCLn. Here, n is a natural number less than or equal to m, which corresponds to the number of light-emitting regions provided in the display region DA. This means that the nth viewing angle control line VCLn may represent a viewing angle control line connected to an nth light-emitting region among m light-emitting regions. Here, m is a natural number greater than 1.

[0043] For example, if the display area DA is divided into 12 light-emitting areas EA1 to EA12, as shown in Fig. 1, m is 12. In this situation, gates of first viewing angle control transistors Tvc1 provided in a first light-emitting region EA1 and gates of second viewing angle control transistors Tvc2 provided in the first light-emitting region EA1 may be connected to a first viewing angle control line VCL1. Furthermore, gates of the first viewing angle control transistors Tvc1 provided in a twelfth light-emitting region EA12 and gates of the second viewing angle control transistors Tvc2 provided in the twelfth light-emitting region EA12 may be connected to a twelfth viewing angle control line VCL12.For example, the light-emitting display panel 100 may be selectively operated in either a first mode (e.g., wide-viewing angle mode or split-view mode) or a second mode (e.g., a narrow-viewing angle mode or a private-view mode) on a pixel-block-by-pixel-block basis.

[0044] In this situation, a polarity type of the first viewing angle control transistor Tvc1 and a polarity type of the second viewing angle control transistor Tvc2 are different from each other.

[0045] For example, when the first viewing angle control transistor Tvc1 is an N-type transistor, the second viewing angle control transistor Tvc2 is a P-type transistor, and when the first viewing angle control transistor Tvc1 is a P-type transistor, the second viewing angle control transistor Tvc2 is an N-type transistor.

[0046] Accordingly, when the first viewing angle control transistor Tvc1 is turned on, the second viewing angle control transistor Tvc2 can be turned off, and when the first viewing angle control transistor Tvc1 is turned off, the second viewing angle control transistor Tvc2 can be turned on.

[0047] For example, as in Fig. 2, the gate of the first viewing angle control transistor Tvc1 and the gate of the second viewing angle control transistor Tvc2 are connected to an nth viewing angle control line VCLn. Therefore, when an nth viewing angle control signal VCSn of a high level or a low level is input through the nth viewing angle control line VCLn, either of the first viewing angle control transistor Tvc1 and the second viewing angle control transistor Tvc2 can be turned on, and the other can be turned off.

[0048] As in Fig. 2, the pixel driving circuit PDC may further include a connecting transistor Tsw3 and emitting transistors Tsw4a and Tsw4b.

[0049] A first terminal of the connecting transistor Tsw3 may be connected to the gate of the driving transistor Tdr, a second terminal of the connecting transistor Tsw3 may be connected to the second terminal of the driving transistor Tdr, and a gate of the connecting transistor Tsw3 may be connected to the reference control line RCL.

[0050] A first terminal of a first emission transistor Tsw4a may be connected to the second terminal of the switching transistor Tsw1, a second terminal of the first emission transistor Tsw4a may be connected to the reference line RL, and a gate of the first emission transistor Tsw4a may be connected to an emission line EL.

[0051] A first terminal of the second emission transistor Tsw4b may be connected to the second terminal of the drive transistor Tdr, a second terminal of the second emission transistor Tsw4b may be connected to the first viewing angle control transistor Tvc1 and the second viewing angle control transistor Tvc2, and a gate of the second emission transistor Tsw4b may be connected to the emission line EL. An emission signal EM may be supplied to the emission line EL.

[0052] The first light-emitting device ED1 connected to the pixel driving circuit PDC may include a first electrode receiving the first voltage EVDD through the driving transistor Tdr and the first viewing angle control transistor Tvc1, a second electrode connected to a second voltage supply line PLB to which a second voltage EVSS is supplied, and a light-emitting layer provided between the first electrode and the second electrode.

[0053] The second light-emitting device ED2 connected to the pixel driving circuit PDC may include a first electrode receiving the first voltage EVDD through the driving transistor Tdr and the second viewing angle control transistor Tvc2, a second electrode connected to the second power supply line PLB to which the second voltage EVSS is supplied, and a light-emitting layer provided between the first electrode and the second electrode.

[0054] The structure of the subpixel P applied in a light-emitting display device according to an embodiment of the present disclosure is not limited to the structure shown in Fig. 2. Accordingly, the structure of subpixel P can be changed to various shapes and configurations based on design considerations.

[0055] In particular, the pixel driving circuit PDC applied to a light-emitting display device according to an embodiment of the present disclosure may be as shown in Fig. 2, a light emission control unit ECU (e.g., a light emission control circuit or a light emission control part) and a viewing angle control unit VCU (e.g., a viewing angle control circuit or a viewing angle control part). The light emission control unit ECU can control a level of the current supplied to the light-emitting device ED1 or ED2 and a timing at which the current is supplied to the light-emitting device ED1 or ED2. The viewing angle control unit VCU can control a viewing angle of light to be output from the light-emitting device ED1 or ED2. In this situation, the structure and function of the light emission control unit ECU can be changed into various forms and configurations.

[0056] The control driver 400 (e.g., control device or timing controller) may realign the input image data Ri, Gi, and Bi transmitted from an external system 600 using a timing synchronization signal TSS transmitted from the external system, and generate a data control signal DCS to be supplied to the data driver 300 and a gate control signal GCS to be supplied to the gate driver 200.

[0057] For this purpose, the control driver 400, as in Fig. 3, a data aligner 430 that realigns input image data Ri, Gi, and Bi to generate image data DATA and transmits the image data DATA to the data driver 300, a control signal generator 420 that generates the gate control signal GCS and the data control signal DCS using the timing synchronization signal TSS, an input unit 410 that transmits the timing synchronization signal TSS transmitted from the external system 600 to the control signal generator 420 and transmits the input image data Ri, Gi, and Bi transmitted from the external system 600 to the data aligner 430, and an output unit 440 that supplies the image data DATA generated by the data aligner 430 and the data control signal DCS generated by the control signal generator 420 to the data driver 300, and supplies the gate driver 200 with the control signal generator 420. Gate control signal GCS.

[0058] The control signal generator 420 may generate a power control signal that is supplied to the power supply unit 500.

[0059] The control driver 400 may further include a memory unit for storing various information. The memory unit 450 may be included in the control driver 400, as shown in Fig. 3, but it may be separate from the control driver 400 and provided independently.

[0060] The control signal generator 420 may generate viewing angle control signals VCS and supply them to a first viewing angle control line VCL1 to m-th viewing angle control line VCLm.

[0061] For example, if the display area DA is divided into 12 light-emitting areas EA1 to EA12, as shown in Fig. 1, m is equal to 12. In this situation, the control signal generator 420 may generate a first viewing angle control signal through a twelfth viewing angle control signal and supply them to the first viewing angle control line VCL1 through the twelfth viewing angle control line VCL12. In this way, the light-emitting display panel 100 may be selectively operated, on a pixel-block-by-pixel-block basis, in either a first mode (e.g., a wide viewing angle mode or a split-view mode) or a second mode (e.g., a narrow viewing angle mode or a private view mode). For example, one or more pixel blocks may be operated in a private mode with a narrow viewing angle, while the remaining pixel blocks may be operated in a split-view mode with a wide viewing angle.

[0062] The external system 600 may perform a function for controlling the control driver 400 and an electronic device.

[0063] For example, when the electronic device is installed in a vehicle, the external system 600 can receive various types of sound information, image information, notification information, and font information via a communication network, and can receive various image information related to vehicle operation via other electronic devices installed in the vehicle. The external system 600 can transmit the received image information to the control driver 400. The external system 600 can convert the image information into input image data Ri, Gi, and Bi and transmit the input image data Ri, Gi, and Bi to the control driver 400.

[0064] The power supply unit 500 can generate various voltages and supply the generated voltages to the control driver 400, the gate driver 200, the data driver 300 and the light-emitting display panel 100.

[0065] The gate driver 200 may be directly embedded in the non-display area NDA using a gate-in-panel (GIP) type, or the gate driver 200 may be provided in the display area DA in which light-emitting devices ED are provided, or the gate driver 200 may be provided on a chip-on-film mounted in the non-display area NDA.

[0066] The gate driver 200 can supply gate pulses GP1 to GPg to the gate lines GL1 to GLg.

[0067] When a gate pulse GP generated by the gate driver 200 is applied to a gate of the switching transistor Tsw1 included in the subpixel P, the switching transistor Tsw1 can be turned on. When the switching transistor Tsw1 is turned on, the data voltage VData supplied through a data line DL can be applied to the subpixel P.

[0068] When a gate-off signal generated by gate driver 200 is applied to switching transistor Tsw1, switching transistor Tsw1 can be turned off. When switching transistor Tsw1 is turned off, data voltage can no longer be applied to subpixel P.

[0069] The gate signal GS supplied to the gate line GL may include the gate pulse GP and the gate off signal.

[0070] To supply the gate pulses GP1 to GPg to the gate lines GL1 to GLg, the gate driver 200 can be configured as shown in Fig. 4, which have stages ST1 to STg connected to the gate lines GL1 to GLg.

[0071] Each of the stages ST1 to STg can be connected to one gate line GL, but can be connected to at least two gate lines GL.

[0072] To generate gate pulses GP1 to GPg, a gate start signal VST and at least one gate timing GCLK generated by the control signal generator 420 may be transmitted to the gate driver 200. For example, the gate start signal VST and the at least one gate timing GCLK may be included in the gate control signal GCS.

[0073] One of the stages ST1 to STg can be controlled by a gate start signal VST to output a gate pulse GP to a gate line GL. The gate pulse GP can be generated by a gate timing clock GCLK.

[0074] At least one of the signals output from a stage ST at which a gate pulse is output can be supplied to another stage ST to drive another stage ST. Accordingly, a gate pulse can be output in another stage ST.

[0075] For example, the stages ST can be controlled sequentially such that the gate pulses GP are supplied sequentially to the gate lines GL.

[0076] As described above, each of the stages ST1 to STg may be connected to one gate line GL, but may also be connected to at least two gate lines GL.

[0077] Likewise, if the subpixel P contains the Fig. 2, each of the stages ST1 to STg may be connected to at least one gate line GL and at least one reference control line RCL. The reference control signals RCS output by the reference control lines RCL may be generated by the same or a similar method as a method by which gate pulses are generated, and may then be sequentially output to the reference control lines RCL.

[0078] In this situation, a level that is comparable to the one in Fig. 2, and a stage connected to the gate line GL shown in Fig. 2, may be the same or different.

[0079] Furthermore, stages for generating gate signals to be supplied to the gate lines GL and stages for generating reference control signals RCS to be supplied to the reference control lines RCL may be provided independently of each other in the gate drivers 200.

[0080] This means that the number, type, and connection structure of lines connected to a stage may vary depending on a structure of the subpixels P and a driving method of the subpixels P.

[0081] Likewise, as in Fig. 2, when the emission line EL to which the emission signal EM is supplied is connected to the subpixel P, after the emission signals EM are generated in the gate driver 200 by the same method as the gate signals GS, the emission signals EM are output to the emission lines EL.

[0082] For example, the gate driver 200 can generate gate signals GS and emission signals EM and can also generate reference control signals RCS.

[0083] In this situation, gate signals GS, emission signals EM and reference control signals RCS can be generated by stages St 1 to ST g as shown in Fig. 4. Alternatively, stages for generating gate signals GS, stages for generating emission signals EM, and stages for generating reference control signals RCS may be provided independently of one another in the gate driver 200. Alternatively, stages for generating gate signals GS and reference control signals RCS and stages for generating emission signals EM may be provided independently of one another in the gate driver 200.

[0084] Therefore, the specific structure of the gate driver 200 can be changed in various shapes and configurations depending on a structure of the subpixels P, a driving method of the subpixels P, and the number and type of lines connected between the subpixels P and the gate driver 200.

[0085] Finally, the data driver 300 can supply data voltages VData to the data lines DL1 to DLd.

[0086] For this purpose, the data driver 300, as in Fig. 5, a shift register 310 that outputs a scanning signal, a latch 320 that latches image data DATA received from the control driver 400, a digital-to-analog converter 330 that converts the image data DATA transmitted from the latch 320 into a data voltage VData and outputs the data voltage VData, and an output buffer 340 that outputs the data voltage transmitted from the digital-to-analog converter 330 to the data line DL based on a source output enable signal SOE.

[0087] The shift register 310 may output the sampling signal using the data control signal DCS received from the control signal generator 420. For example, the data control signals DCS transmitted to the shift register 310 may include a source start pulse SSP and a source timing signal SSC.

[0088] The latch 320 may latch image data DATA sequentially received from the control driver 400 and then simultaneously output the image data DATA to the digital-to-analog converter 330 based on the sampling signal.

[0089] The digital-to-analog converter 330 can convert the image data transmitted from the signal memory 320 into data voltages VData and output the data voltages VData.

[0090] The output buffer 340 can simultaneously output the data voltages VData transmitted from the digital-to-analog converter 330 to the data lines DL1 to DLd of the light-emitting display panel 100 based on the source output enable signal SOE transmitted from the control signal generator 420.

[0091] For this purpose, the output buffer 340 may include a buffer 341 that stores the data voltage VData transmitted from the digital-to-analog converter 330, and a switch 342 that outputs the data voltage VData stored in the buffer 341 to the data line DL based on the source output enable signal SOE.

[0092] For example, when the switches 342 are turned on based on the source output enable signal SOE supplied to the switches 342 at the same time, the data voltages VData stored in the buffers 341 can be supplied to the data lines DL1 to DLd through the switches 342.

[0093] The data voltages VData supplied to the data lines DL1 to DLd can be supplied to subpixels P connected to a gate line GL to which a gate pulse GP is supplied.

[0094] Additional features for the configurations described above are described below.

[0095] The display area DA may include pixel row lines and pixel column lines provided with subpixels P. For example, the pixel row lines may mean subpixels P arranged along a first direction (X-axis direction) shown in Fig. 1, and the pixel column lines may mean subpixels P arranged along a second direction (Y-axis direction) shown in Fig. 1 is shown.

[0096] A subpixel P can be one of a red subpixel emitting red light, a green subpixel emitting green light, a blue subpixel emitting blue light, and a white subpixel emitting white light. A unit pixel can have at least two subpixels. For example, a unit pixel can emit white light.

[0097] The subpixel P may include the first light-emitting device ED1 and the second light-emitting device ED2 (e.g., the first light-emitting element and the second light-emitting element), the pixel driving circuit PDC including transistors that drive the first light-emitting device ED1 and the second light-emitting device ED2, the first lens disposed on the first light-emitting device ED1, and the second lens disposed on the second light-emitting device ED2. For example, the first lens may have a semi-cylindrical shape or a rounded rectangular shape to provide a wide viewing angle in a plan view, and the second lens may have a hemispherical shape or a dome-shaped shape to provide a narrow viewing angle, as described below with reference to Fig. 9A and Fig. 9B is described in more detail.

[0098] A first light-emitting unit may include the first light-emitting device ED1, which is controlled by the first viewing angle control transistor Tvc1, and the first lens arranged on the first light-emitting device ED1. Similarly, a second light-emitting unit may include the second light-emitting device ED2, which is controlled by the second viewing angle control transistor Tvc2, and the second lens arranged on the second light-emitting device ED2.

[0099] The first light-emitting unit can be controlled by the first viewing angle control transistor Tvc1, and the second light-emitting unit can be controlled by the second viewing angle control transistor Tvc2.

[0100] The first viewing angle control transistor Tvc1 may be connected between the first light-emitting unit and the driving transistor Tdr, which controls a level of the current supplied to the first light-emitting unit or the second light-emitting unit. The second viewing angle control transistor Tvc2 may be connected between the driving transistor Tdr and the second light-emitting unit. The second emission transistor Tsw4b may be connected between the first viewing angle control transistor Tvc1 and the driving transistor Tdr, and between the second viewing angle control transistor Tvc2 and the driving transistor Tdr.

[0101] The first lens provided in the first light-emitting unit and the second lens provided in the second light-emitting unit may have different shapes.

[0102] In particular, an exit angle, i.e., a viewing angle, of light output through the first lens may be different from a viewing angle of light output through the second lens.

[0103] For example, the subpixel P may operate in a wide-viewing-angle mode or a split-view mode (hereinafter simply referred to as a split mode (SM)) by driving the first light-emitting device ED1 to output light through the first lens. Furthermore, the subpixel P may operate in a narrow-viewing-angle mode or a private-view mode (hereinafter simply referred to as a private mode (PM)) that restricts a viewing angle by driving the second light-emitting device ED2 to output light through the second lens.

[0104] The narrow viewing angle mode may refer to a mode having a narrower viewing angle (hereinafter simply referred to as a narrow viewing angle or a second viewing angle) than a viewing angle (hereinafter simply referred to as a wide viewing angle or a first viewing angle) in the wide viewing angle mode.

[0105] That is, the light-emitting display device according to an embodiment of the present disclosure can selectively drive the first light-emitting device ED1 and the second light-emitting device ED2 of the sub-pixel P, thereby controlling a viewing angle of the sub-pixel P. A detailed description of this will be provided later.

[0106] The display area DA may be divided into at least two light-emitting areas along the first direction, and the display area DA may be divided into at least two light-emitting areas along the second direction, which is different from the first direction. For example, the display area DA may be divided as shown in Fig. 1, be divided into four light-emitting regions along the first direction X and into three light-emitting regions along the second direction Y. This means that Fig. 1 illustrates a light-emitting display panel having a display area DA divided into 12 light-emitting areas EA1 to EA12. Likewise, each of the 12 light-emitting areas EA1 to EA12 can be individually controlled to operate in the split mode with a wide viewing angle or the private mode with a narrow viewing angle.

[0107] For example, if the first light-emitting devices ED1 are arranged in the subpixels P of a first light-emitting region EA1 arranged in Fig. 1, and light is output through the first lenses, the first light-emitting region EA1 can be operated in the wide viewing angle mode (e.g., split mode), and when the second light-emitting devices ED2 in the subpixels P of the first light-emitting region EA1 are driven and light is output through the second lenses, the first light-emitting region EA1 can be operated in the narrow viewing angle mode (e.g., private mode).

[0108] In this situation, when the first light-emitting devices ED1 in the subpixels P of the second light-emitting region EA2 are driven and light is output through the first lenses, the second light-emitting region EA2 can be operated in the wide viewing angle mode (e.g., split mode), and when the second light-emitting devices ED2 in the subpixels P of the second light-emitting region EA2 are driven and light is output through the second lenses, the second light-emitting region EA2 can be operated in the narrow viewing angle mode (e.g., privacy mode).

[0109] Each of a third light-emitting area EA3 to a twelfth light-emitting area EA12 can also be operated in the wide viewing angle mode or the narrow viewing angle mode.

[0110] For example, all of the first light-emitting region EA1 through the twelfth light-emitting region EA12 can be operated in the wide viewing angle mode or in the narrow viewing angle mode. Alternatively, some of the first light-emitting region EA1 through the twelfth light-emitting region EA12 can be operated in the wide viewing angle mode, and others can be operated in the narrow viewing angle mode.

[0111] Accordingly, the positions of light-emitting regions operating in the wide viewing angle mode and the positions of light-emitting regions operating in the narrow viewing angle mode can be changed differently and dynamically adjusted (for example, the different regions can be set based on user input or based on a default setting, etc.). Specifically, the positions of the light-emitting regions operating in the wide viewing angle mode and the positions of the light-emitting regions operating in the narrow viewing angle mode can be changed differently along the first direction X and changed differently along the second direction Y.

[0112] The light-emitting display device according to an embodiment of the present disclosure may further include a touch screen arranged to detect the user's touch in the display area DA.

[0113] The touch screen may be bonded to the light-emitting display panel 100 or embedded in the light-emitting display panel 100.

[0114] For example, the light-emitting display panel 100 may include a pixel drive circuit layer including transistors arranged on a substrate, a light-emitting device layer including light-emitting devices arranged on the pixel drive circuit layer, an encapsulation layer arranged to encapsulate the light-emitting device layer, a touch sensor array including touch electrodes arranged on the encapsulation layer, and a lens array arranged on the touch sensor array. In this situation, the light-emitting display panel 100 may further include an optical layer, an optically clear adhesive (OCA), a cover substrate, and a protective layer arranged sequentially on the lens array.The light-emitting display panel 100 may further include a color filter matrix including a color filter and a black matrix disposed between the touch sensor matrix and the lens matrix.

[0115] As described above, the gate driver 200 can generate gate signals GS and emission signals EM, and can also generate reference control signals RCS. In the following description, the gate signals GS, emission signals EM, and reference control signals RCS are referred to as scan signals.

[0116] This means that the gate driver 200 can supply at least one scan signal to each of the pixel row lines using the gate control signal GCS supplied from the control driver 400. For example, a subpixel P supplied with three scan signals GS, EM, and RCS is Fig. 2 shown.

[0117] The transistors provided in the subpixels P and the transistors provided in the gate driver 200 provided in the display area DA or the non-display area NDA may be formed using at least one of an LTPS transistor using low-temperature polysilicon (LTPS) and an oxide transistor using a metal-oxide semiconductor. Specifically, the LTPS transistor and the oxide transistor may be simultaneously present in the light-emitting display panel 100 to reduce power consumption.

[0118] The data driver 300 may be a data driver IC (integrated circuit) as shown in Fig. 1, and at least one data driver IC may be mounted on the light-emitting display panel 100. Fig. 1 illustrates a light-emitting display panel 100 on which four data drivers 300 comprising four data driver ICs are mounted.

[0119] Each of the data driver ICs can be individually mounted on each circuit film. The circuit film on which the data driver IC is mounted can be bonded to the non-display area NDA, in which a pad region of the light-emitting display panel 100 is disposed, through an anisotropic conductive film (ACF). The circuit film can be a chip-on-film (COF). Furthermore, in addition to the COF, an FPC (Flexible Printed Circuit Board) or an FFC (Flexible Flat Cable) can be used as the circuit film.

[0120] The control driver 400 can control the gate driver 200 and the data driver 300 using timing synchronization signals TSS supplied from the external system 600 and timing setting information stored therein.

[0121] For this purpose, the control driver 400 may generate a gate control signal GCS that controls a drive timing of the gate driver 200 and supply it to the gate driver 200, and generate a data control signal DCS that controls a drive timing of the data driver 300 and supply it to the data driver 300.

[0122] In addition, the control driver 400 may perform various image processing operations including image quality correction, deterioration correction, and brightness correction for received input image data Ri, Gi, and Bi, and then supply the image-processed data DATA to the data driver 300.

[0123] Fig. 6 is an exemplary diagram illustrating an internal structure of a vehicle in which a light-emitting display device according to an embodiment of the present disclosure is applied, and Fig. 7A to Fig. 7F are exemplary diagrams illustrating how viewing angles of light-emitting regions change in a light-emitting display panel according to an embodiment of the present disclosure. Specifically, a light-emitting display panel 100 divided into 12 light-emitting regions EA1 to EA12 is shown in Fig. 7A to Fig. 7F. Accordingly, a light-emitting display device according to an embodiment of the present disclosure will be described below with reference to Fig. 1 to Fig. 7F are described.

[0124] For example, as in Fig. As shown in Figure 6, a light-emitting display device 10 according to an embodiment of the present disclosure may be placed in a center of a vehicle dashboard to display images to both a driver and a passenger in a passenger seat, but embodiments are not limited thereto. For example, the light-emitting display panel 100 of the light-emitting display device 10 may include a first light-emitting region EA1 to a twelfth light-emitting region EA12, and viewing angles of the first light-emitting region EA1 to the twelfth light-emitting region EA12 may be varied independently of each other.

[0125] Here, the viewing angles refer to the wide viewing angle and the narrow viewing angle. The wide viewing angle means a larger viewing angle than the narrow viewing angle. In the following description, a light-emitting area in which an image with the wide viewing angle is output is referred to as a wide viewing angle mode area or a split mode area, and a light-emitting area in which an image with the narrow viewing angle is output is referred to as a narrow viewing angle mode area or a private mode area. For example, the wide viewing angle can be viewed by both the driver and the passenger, while the narrow viewing angle can be viewed by only one of the driver and the passenger, but embodiments are not limited to this.

[0126] First, with reference to Fig. 7A, the first light-emitting region EA1 to the sixth light-emitting region EA6 of the light-emitting display panel 100 in the left direction and right direction provide a first image with the wide viewing angle for a driver and a passenger in a passenger seat. For example, in this way, the speedometer, tachometer, and fuel gauge can be viewed by both the driver and the passenger, while the passenger can view content that is not visible to the driver (for example, a movie or video about sunflowers). In this way, a passenger sitting next to the driver can comfortably view or watch content while in the second mode (for example, private mode) without disturbing the driver because content can be displayed with a narrow viewing angle.

[0127] The first image IM1 may denote an image providing information related to an operation of a vehicle (hereinafter referred to simply as a vehicle operation information image, and the vehicle operation information image may also be denoted by reference symbol IM1). For example, as shown in Fig. 7A, the first image IM1 can provide a speed of a vehicle, a mileage of a vehicle, and a fuel amount of a vehicle.

[0128] The vehicle operating information image should be visible not only to the driver but also to the front passenger. Since the first image IM1 has a wide viewing angle, both the driver and the front passenger can see the first image IM1. Accordingly, the first light-emitting area EA1 to the sixth light-emitting area EA6 can be split mode areas.

[0129] In particular, the vehicle operation information image should be displayed while the vehicle is operating, should be displayed in a size that complies with the established standards, and should be displayed in an area that is most visible to the driver. Therefore, while a vehicle is operating, the vehicle operation information image should be unconditionally displayed, regardless of any driver choice, and the light-emitting areas in which the vehicle operation information image is output should also be fixed. For example, if the first image IM1 is the vehicle operation information image, the first image IM1 can be fixedly displayed in the first light-emitting area EA1 to the sixth light-emitting area EA6, as shown in Fig. 7A.

[0130] In this situation, the 7th light-emitting region EA7 to the 12th light-emitting region EA12 of the light-emitting display panel 100 can display a second image IM2 having a narrow viewing angle in the left direction and right direction, so that it is visible only to a passenger on a passenger seat, so that it does not affect the driver's driving, which can improve safety and comfort.

[0131] The second image IM2 may, for example, refer to an image received through various communication networks (hereinafter referred to simply as a general image, and the general image may also be denoted by reference symbol IM2). For example, the second image IM2 may be a television video, an Internet video, a video game, or a playback file video.

[0132] Since the general image does not relate to the operation of the vehicle, is provided based on the choice of a passenger, and attracts the driver's attention, the general image may be a distraction to the driver. Therefore, the second image IM2 does not need to be visible to the driver. Since the second image IM2 has a narrow viewing angle visible only to a passenger, a driver cannot see the second image IM2, and only a passenger can see the second image IM2. Accordingly, the 7th light-emitting area EA7 to the 12th light-emitting area EA12 may be the privacy mode areas.

[0133] Referring to Fig. 7B, when a vehicle is parked or not operated, the first light-emitting area EA1 to the twelfth light-emitting area EA12 can provide a driver and a passenger with the second image IM2 having the wide viewing angle in the left and right directions based on a user's selection.

[0134] Referring to Fig. 7C, the 7th light-emitting area EA7 to the 12th light-emitting area EA12 can be divided based on a user's selection. In this situation, the 7th light-emitting area EA7 to the 9th light-emitting area EA9 can provide a third image IM3 with a wide viewing angle in the left and right directions for a driver and a passenger in a passenger seat, and the 10th light-emitting area EA10 to the 12th light-emitting area EA12 can provide the second image IM2 with a narrow viewing angle visible only to the passenger.

[0135] The third image IM3 may denote an image providing additional information related to an operation of a vehicle (hereinafter referred to simply as a vehicle operation information additional image, and the vehicle operation information additional image may also be denoted by reference symbol IM3). For example, the third image IM3 may be as shown in Fig. 7C, provide location information (for example, navigation information).

[0136] The vehicle operation information auxiliary image IM3 must be visible not only to the driver but also to the passenger. Since the third image IM3 has a wide viewing angle, both the driver and the passenger can see the third image IM3. Accordingly, the 7th light-emitting area EA7 to the 9th light-emitting area EA9 can be the shared mode areas, and the 10th light-emitting area EA10 to the 12th light-emitting area EA12 can be the private mode areas.

[0137] Referring to Fig. 7D, the third image IM3 can be displayed by the seventh light-emitting area EA7 and the tenth light-emitting area EA10, and the second image IM2 can be displayed by the 8th light-emitting area EA8, the 9th light-emitting area EA9, the 11th light-emitting area EA11 and the 12th light-emitting area EA12.

[0138] That is, in a light-emitting display device according to an embodiment of the present disclosure, the split mode area can be switched to the private mode area along the first direction X of the light-emitting display panel, as shown in Fig. 7A to Fig. 7C, and it can be switched along the second direction Y of the light-emitting display panel as shown in Fig. 7D.

[0139] Finally, at least one of the light-emitting areas EA7 to EA12, which are shown in Fig. 7A as privacy mode areas, to display the fourth image IM4 in the split mode area. For example, as shown in Fig. 7E, only the 8th light-emitting area EA8 is changed to the split mode area for displaying the fourth image IM4 (for example, for providing a warning or a notification, etc.).

[0140] The fourth image IM4 may denote an image providing emergency information concerning an operation of a vehicle (hereinafter referred to simply as an emergency information image, and the emergency information image may also be denoted by reference symbol IM4). For example, as shown in Fig. 7E, the fourth image IM4 may be an image indicating that a dangerous object is located in front of a vehicle. The emergency information images IM4 may be acquired by various sensors mounted on a vehicle. Furthermore, the emergency information image IM4 may be a disaster notification provided by the government or local governments through various communication networks to citizens nationwide or in a specific region, or it may be an image provided by a navigation system mounted on a vehicle.

[0141] However, as in Fig. 7A and Fig. 7F, the fourth image IM4 may be displayed by at least one (for example, the third emitting region EA3 in the lower left corner) of the first light-emitting region EA1 to the sixth light-emitting region EA6 driven in the split mode region.

[0142] A specific method for changing or switching between the sharing mode area and the private mode area will be described below with reference to Fig. 14 are described.

[0143] A light-emitting display device 10 according to an embodiment of the present disclosure is not limited to the above-described light-emitting display device for a vehicle and can therefore be applied to various light-emitting display devices such as a light-emitting display device for a mobile phone, a light-emitting display device for an IT device, and a light-emitting display device for a television.

[0144] Fig. 8 is an exemplary plan view schematically illustrating a structure of a subpixel of a light-emitting display panel according to an embodiment of the present disclosure, and Fig. 9A and Fig. 9B are exemplary perspective views illustrating structures of a first lens and a second lens of a subpixel applied in a light-emitting display panel according to an embodiment of the present disclosure.

[0145] As in Fig. As shown in Figure 8, a subpixel P applied to a light-emitting display panel according to an embodiment of the present disclosure may include a first light-emitting device ED1, a second light-emitting device ED2, a first lens LZ1 disposed on the first light-emitting device ED1, and a second lens LZ2 disposed on the second light-emitting device ED2. For example, the first lens LZ1 may have a semi-cylindrical shape or a rectangular shape in a plan view, and the second lens LZ2 may have a hemispherical shape or a dome-shaped shape.

[0146] The first lens LZ1 may be arranged on a light propagation path of the first light-emitting device ED1. The second lens LZ2 may be arranged on a light propagation path of the second light-emitting device ED2. Here, the light propagation path may, for example, be a third direction Z perpendicular to the first direction X and the second direction Y. For example, the first lens LZ1 and the first light-emitting device ED1 may be provided along the third direction Z, and the second lens LZ2 and the second light-emitting device ED2 may be provided along the third direction Z.

[0147] The subpixel P may include at least two second light-emitting devices ED2, and the second lens LZ2 may be provided on the light propagation path of each of the at least two second light-emitting devices ED2. The at least two second light-emitting devices ED2 may share a first electrode (e.g., an anode) in the subpixel P.

[0148] In the subpixel P, a region in which the first lens LZ1 is arranged may be referred to as a first lens region, and a region in which the second lens LZ2 is arranged may be referred to as a second lens region.

[0149] As in Fig. 9A, the first lens LZ1 may be a semi-cylindrical lens elongated in the first direction X. As shown in Fig. As shown in Figure 9B, the second lens LZ2 may be a hemispherical lens. However, the shape of the first lens LZ1 and the shape of the second lens LZ2 may be changed differently.

[0150] In the following description, the first direction X can be expressed in a left-right direction, a width direction, a horizontal direction, or an X-axis direction. The second direction Y can be expressed in an up-down direction, a longitudinal direction, a vertical direction, or a Y-axis direction. The third direction Z can be expressed in a front-back direction, a thickness direction of a light-emitting display panel 100, or a Z-axis direction.

[0151] The first lens LZ1 and the second lens LZ2 can control (limit) a viewing angle in the left-right direction X differently and can control (limit) a viewing angle in the up-down direction Y equally.

[0152] For example, since the first lens LZ1 does not restrict the light propagation path of light emitted from the first light-emitting device ED1 in the left-right direction X within a certain angle, the first lens LZ1 can control the viewing angle to a wide viewing angle. The second lens LZ2 can control the viewing angle to a narrow viewing angle by restricting the light propagation path of light emitted from the second light-emitting device ED2 in the left-right direction X within a certain angle.

[0153] Both the first lens LZ1 and the second lens LZ2 can control a viewing angle to be the narrow viewing angle by limiting a light propagation path within a certain angle in the up-down direction Y. Accordingly, in a situation where a light-emitting display device 10 is applied in a vehicle as shown in Fig. 6, a driver's view is prevented from being disturbed by images displayed on the light-emitting display panel 100 in such a manner as to be reflected from a windshield of a vehicle, and safety and comfort can be improved.

[0154] When the first light-emitting device ED1 in the subpixel P is driven, the subpixel P can be operated in the wide viewing angle mode that does not restrict a viewing angle in the left-right direction X.

[0155] When the second light-emitting device ED2 in the subpixel P is driven, the subpixel P can be operated in the narrow viewing angle mode that limits a viewing angle in the left-right direction X. The wide viewing angle mode can be described as a first mode (e.g., split mode), and the narrow viewing angle mode can be described as a second mode (e.g., privacy mode).

[0156] In addition, the subpixel P can be switched between the wide viewing angle mode and the narrow viewing angle mode by switching the driving of the first light-emitting device ED1 and the second light-emitting device ED2 of the subpixel P.

[0157] To provide additional description, as described above, the first light-emitting unit may include the first light-emitting device ED1 driven by the first viewing angle control transistor Tvc1 and the first lens LZ1 arranged on the first light-emitting device, and the second light-emitting unit may include the second light-emitting device ED2 driven by the second viewing angle control transistor Tvc2 and the second lens LZ2 arranged on the second light-emitting device.

[0158] In this situation, in each of the light-emitting regions EA1 to EA12, only the first light-emitting units or only the second light-emitting units can be driven simultaneously. For example, depending on the selected mode, in each of the light-emitting regions, only the first light-emitting device ED1 provided in the first light-emitting unit can be driven, or only the second light-emitting device ED2 provided in the second light-emitting unit can be driven. Accordingly, in each of the light-emitting regions EA, only light with the wide viewing angle can be output through the first lens LZ1, or only light with the narrow viewing angle can be output through the second lens LZ2.

[0159] Accordingly, each of the light-emitting regions can be the wide-viewing-angle mode region or the narrow-viewing-angle mode region.

[0160] In addition, since the viewing angles of the light-emitting areas can be controlled independently, the light-emitting area can be the wide-viewing-angle mode area or the narrow-viewing-angle mode area regardless of the position of the light-emitting area.

[0161] Fig. 10 is an exemplary plan view illustrating a structure of three subpixels applied in a light-emitting display panel according to an embodiment of the present disclosure, Fig. 11 is an exemplary cross-sectional view taken along a line II' in Fig. 10, and Fig. 12 is an exemplary cross-sectional view taken along a line II-II' in Fig. 10. In particular, Fig. 10 shows three subpixels BP, RP and GP, which form a unit pixel UP, in Fig. 11 shows a cross-sectional area of ​​the first light-emitting unit LU1, and in Fig. 12 shows a cross-sectional area of ​​the second light-emitting unit LU2.

[0162] For example, the unit pixel UP that can output white light may have a blue subpixel BP that emits blue light, a red subpixel RP that emits red light, and a green subpixel GP that emits green light, as shown in Fig. 10 shown.

[0163] The blue subpixel BP may include a first light-emitting unit LU1 and a second light-emitting unit LU2. The first light-emitting unit LU1 may include a first light-emitting device ED1 controlled by a first viewing angle control transistor Tvc1, and a first lens LZ1 overlapping the first light-emitting device ED1. The second light-emitting unit LU2 may include a second light-emitting device ED2 controlled by a second viewing angle control transistor Tvc2, and a second lens LZ2 overlapping the second light-emitting device.

[0164] The red subpixel RP may include a first light-emitting unit LU1 and a second light-emitting unit LU2. The first light-emitting unit LU1 may include a first light-emitting device ED1 controlled by a first viewing angle control transistor Tvc1, and a first lens LZ1 overlapping the first light-emitting device ED1. The second light-emitting unit LU2 may include a second light-emitting device ED2 controlled by a second viewing angle control transistor Tvc2, and a second lens LZ2 overlapping the second light-emitting device.

[0165] The green subpixel GP may include a first light-emitting unit LU1 and a second light-emitting unit LU2. The first light-emitting unit LU1 may include a first light-emitting device ED1 controlled by a first viewing angle control transistor Tvc1, and a first lens LZ1 overlapping the first light-emitting device ED1. The second light-emitting unit LU2 may include a second light-emitting device ED2 controlled by a second viewing angle control transistor Tvc2, and a second lens LZ2 overlapping the second light-emitting device.

[0166] In each of the blue subpixel BP, red subpixel RP and green subpixel GP, as described with reference to Fig. 9A and Fig. 9B, the first lens LZ1 and the second lens LZ2 control a viewing angle in the left-right direction X differently and control a viewing angle in the up-down direction Y equally. For example, a unit pixel may have three subpixels (e.g., red, green, and blue), and each of these subpixels may have two light-emitting elements, such as one light-emitting element for providing a wide-angle view and one light-emitting element for providing a narrow-angle view. Likewise, each of the six light-emitting elements within the unit pixel may be controlled for activation by the control driver.For example, the viewing angle control signal VCS can be used with a high or low level to selectively activate the six different light-emitting elements according to two different modes (e.g., a high level of VCS could activate the split mode, while a low level of VCS could activate the private mode, or vice versa), but embodiments are not limited to this. In accordance with another embodiment, two separate signals from two separate signal lines can be used to control the two different types of light-emitting elements.

[0167] Each of the first light-emitting units LU1 of the unit pixel UP may include a first light-emitting device ED1 and a first lens LZ1. Each of the second light-emitting units LU2 of the unit pixel UP may include at least one second light-emitting device ED2 and at least one second lens LZ2. In this situation, the at least two second light-emitting devices ED2 may share a first electrode (e.g., an anode) 321, a light-emitting layer 322, and a second electrode (e.g., a cathode) 323, as shown in Fig. 12 shown.

[0168] The first light-emitting device ED1 included in the first light-emitting unit LU1 may have the same or substantially the same shape as a bottom surface of the first lens LZ1. The size of the first lens LZ1 may be set to be larger than the size of the first light-emitting device ED1 to improve the emission efficiency of light generated by the first light-emitting device ED1.

[0169] The second light-emitting device ED2 included in the second light-emitting unit LU2 may have the same or substantially the same shape as the bottom surface of the second lens LZ2. The size of the second lens LZ2 may be set to be larger than the size of the second light-emitting device ED2 to improve the emission efficiency of light generated by the second light-emitting device ED2.

[0170] The areas of the second light-emitting devices ED2 included in the second light-emitting units LU2 may be the same or substantially the same.

[0171] However, the number of second light-emitting devices ED2 included in the second light-emitting unit LU2 may vary for each subpixel BP, RP, and GP. For example, as shown in Fig. 10, the number of second light-emitting devices ED2 arranged in the second light-emitting unit LU2 of the blue subpixel BP may be greater than the number of second light-emitting devices ED2 arranged in the second light-emitting unit LU2 of the red subpixel RP. The number of second light-emitting devices ED2 arranged in the second light-emitting unit LU2 of the red subpixel RP may be less than the number of second light-emitting devices ED2 arranged in the second light-emitting unit LU2 of the green subpixel GP. Accordingly, the efficiency deviation of the blue subpixel BP, the red subpixel RP, and the green subpixel GP in the unit pixel UP can be compensated by the number of second light-emitting devices ED2 arranged in the second light-emitting unit LU2.

[0172] The size of the first light-emitting device ED1 may be different for each subpixel P. For example, as in Fig. 10, the size of the first light-emitting device ED1 of the blue subpixel BP may be larger than the size of the first light-emitting device ED1 of the red subpixel RP. Furthermore, the size of the first light-emitting device ED1 of the red subpixel RP may be smaller than the size of the first light-emitting device ED1 of the green subpixel GP. Accordingly, the efficiency deviation of the blue subpixel BP, the red subpixel RP, and the green subpixel GP in the unit pixel UP can be compensated by the sizes of the first light-emitting devices ED1 arranged in the first light-emitting units LU1.

[0173] A light-emitting display panel 100 according to an embodiment of the present disclosure may be configured as shown in the Fig. 11 and Fig. 12, a pixel driving circuit layer including a substrate 101 and transistors Tvc1 and Tvc2 arranged on the substrate 101, a light-emitting device layer including light-emitting devices ED1 and ED2 arranged on the pixel driving circuit layer, an encapsulation layer 800 arranged on the light-emitting device layer, and a lens layer including lenses LZ1 and LZ2 arranged on the encapsulation layer 800.

[0174] A light-emitting display panel 100 according to an embodiment of the present disclosure may further include a touch sensor layer disposed between the encapsulation layer 800 and the lens layer. A light-emitting display panel 100 according to an embodiment of the present disclosure may further include a color filter layer including a color filter and a black matrix disposed between the touch sensor layer and the lens layer.

[0175] The following is based on reference to Fig. 10 to Fig. 12 describes a cross-sectional structure of a subpixel. Fig. 11 and Fig. 12 represent cross-sectional areas of the blue subpixel BP, which is Fig. 10. However, each of the red subpixel RP and the green subpixel GP can also have the Fig. 11 and Fig. 12 shown cross-sectional structures.

[0176] That is, each of the subpixels BP, RP and GP of the light-emitting display panel according to an embodiment of the present disclosure has the Fig. 11 shown first light-emitting unit LU1 and the one shown in Fig. 12 may comprise the second light-emitting unit LU2.

[0177] As in Fig. 11, the first light-emitting unit LU1 of the sub-pixel P may include a first viewing angle control transistor Tvc1, a first light-emitting device ED1 connected to the first viewing angle control transistor Tvc1, and a first lens LZ1 arranged on the first light-emitting device ED1 so as to overlap the first light-emitting device ED1.

[0178] As in Fig. 12, the second light-emitting unit LU2 of the sub-pixel P may include a second viewing angle control transistor Tvc2, a second light-emitting device ED2 connected to the second viewing angle control transistor Tvc2, and at least one second lens LZ2 arranged on the second light-emitting device ED2 so as to overlap the second light-emitting device ED2.

[0179] In the light-emitting display panel 100 according to an embodiment of the present disclosure, the pixel driving circuit layer disposed on the substrate 101 may include insulating layers stacked on the substrate 101. For example, the insulating layers may include a buffer layer 110, a gate insulating layer 120, an interlayer insulating layer 130, a passivation layer 140, and a planarization layer 150.

[0180] The substrate 101 may comprise an insulating material, such as glass or plastic. The plastic substrate may be formed from a flexible material. For example, the substrate 101 may comprise at least one of acrylic resin, epoxy resin, siloxane resin, polyimide resin, and polyamide resin. This means that the substrate 101 may comprise an organic insulating material.

[0181] Buffer layer 110 may comprise an inorganic insulating material, such as silicon oxide (SiOx), silicon nitride (SiNx), and aluminum oxide (Al2O3), and may have a single-layer or multi-layer structure. Buffer layer 110 may prevent impurities, such as hydrogen, from flowing through substrate 101 into semiconductor layers 211 and 221.

[0182] On the buffer layer 110, various transistors forming the subpixel P may be provided. For example, the first viewing angle control transistor Tvc1 and the second viewing angle control transistor Tvc2 may be arranged.

[0183] Each of the transistors provided in the subpixel P may include a gate electrode, a source electrode, and a drain electrode. In this situation, the source electrode and the drain electrode are not fixed and may change depending on the voltage and current direction applied to the gate electrode. Accordingly, one of the source electrodes may be referred to as a first electrode and the other as a second electrode. The transistors of the subpixel P may use at least one of a polysilicon semiconductor, an amorphous silicon semiconductor, and an oxide semiconductor. The transistors of the subpixel P may be P-type transistors or N-type transistors, and the subpixel P may include both P-type transistors and N-type transistors.

[0184] The first viewing angle control transistor Tvc1 includes a semiconductor layer 211, a gate electrode 213, a source electrode 215, and a drain electrode 217 disposed at an upper end of the buffer layer 110. The second viewing angle control transistor Tvc2 includes a semiconductor layer 221, a gate electrode 223, a source electrode 225, and a drain electrode 227 disposed on the buffer layer 110.

[0185] A gate insulating layer 120 may be disposed between the semiconductor layers 211 and 221 and the gate electrodes 213 and 223. An interlayer insulating layer 130 may be disposed between the gate electrode 213 and the source electrode 215 and the drain electrode 217, and between the gate electrode 223 and the source electrode 225 and the drain electrode 227. The source electrode 215 and the drain electrode 217 of the first viewing angle control transistor Tvc1 may be connected to a source region and a drain region of the semiconductor layer 211 through contact holes penetrating the interlayer insulating layer 130 and the gate insulating layer 120. The source electrode 225 and the drain electrode 227 of the second viewing angle control transistor Tvc2 may be connected to a source region and a drain region of the semiconductor layer 221 through contact holes penetrating the interlayer insulating layer 130 and the gate insulating layer 120.

[0186] The semiconductor layers 211 and 221 may include polycrystalline silicon, an oxide semiconductor material, or low-temperature polysilicon (LPTS). The semiconductor layers 211 and 221 may include at least one selected from IZO (InZnO)-based oxide semiconductor material, IGO (InGaO)-based oxide semiconductor material, ITO (InSnO)-based oxide semiconductor material, IGZO (InGaZnO)-based oxide semiconductor material, IGZTO (InGaZnSnO)-based oxide semiconductor material, GZTO (GaZnSnO)-based oxide semiconductor material, and GZO (GaZnO)-based oxide semiconductor material. A light-blocking layer may be further disposed beneath the semiconductor layers 211 and 221.

[0187] The gate insulating layer 120 may comprise an inorganic insulating material, such as silicon oxide (SiOx) and silicon nitride (SiNx). The gate insulating layer 120 may comprise a material with a high dielectric constant. For example, the gate insulating layer 120 may comprise a high-K material, such as hafnium oxide (HfO). The gate insulating layer 120 may have a multilayer structure.

[0188] Gate lines connected to the gate electrodes 213 and 223 may be arranged on the gate insulating layer 120.

[0189] The interlayer insulation layer 130 may comprise an inorganic insulation material, such as silicon oxide (SiOx) and silicon nitride (SiNx). The interlayer insulation layer 130 may have a multilayer structure.

[0190] On the interlayer insulation layer 130, data lines connected to the source electrodes 215 and 225 or the drain electrodes 217 and 227 and power supply lines may be arranged.

[0191] A passivation layer 140 and a planarization layer 150 may be stacked on the first viewing angle control transistor Tvc1 and the second viewing angle control transistor Tvc2. The passivation layer 140 may include an inorganic insulating material, such as silicon oxide (SiOx) and silicon nitride (SiNx). The planarization layer 150 may include an organic insulating material different from that of the passivation layer 140 and may provide a flat surface.

[0192] A light-emitting device layer including the first light-emitting device ED1 and the second light-emitting device ED2 may be disposed on the planarization layer 150.

[0193] The first light-emitting device ED1 includes a first electrode 311 disposed on the planarization layer 150, a light-emitting layer 312 disposed on the first electrode 311, and a second electrode 313 disposed on the light-emitting layer 312. The second light-emitting device ED2 includes a first electrode 321 disposed on the planarization layer 150, a light-emitting layer 322 disposed on the first electrode 321, and a second electrode 323 disposed on the light-emitting layer 322. The first light-emitting device ED1 and the second light-emitting device ED2, disposed in the subpixel P, can emit light of the same color.

[0194] The first electrode 311 of the first light-emitting device ED1 may be connected to one of the source electrode 215 and the drain electrode 217 of the first viewing angle control transistor Tvc1 through a contact hole penetrating the planarization layer 150 and the passivation layer 140. The first electrode 321 of the second light-emitting device ED2 may be connected to one of the source electrode 225 and the drain electrode 227 of the second viewing angle control transistor Tvc2 through a contact hole penetrating the planarization layer 150 and the passivation layer 140.

[0195] The first electrodes 311 and 321 may comprise a conductive material with high reflectivity. The first electrodes 311 and 321 may comprise metal, such as aluminum (Al), silver (Ag), titanium (Ti), and a silver-palladium-copper alloy (APC). The first electrodes 311 and 321 may also comprise a transparent conductive material, such as indium tin oxide (ITO) or indium zinc oxide (IZO). For example, the first electrodes 311 and 321 may comprise a Ti / Al / Ti multilayer structure made of titanium (Ti) and aluminum (Al), an ITO / Al / ITO multilayer structure made of ITO and aluminum (Al), or an ITO / APC / ITO multilayer structure made of ITO and APC.

[0196] The light-emitting layers 312 and 322 may include an emission material layer (EML) containing a light-emitting material. The light-emitting material may be an organic material, an inorganic material, or a hybrid material. The light-emitting layer 312 of the first light-emitting device ED1 and the light-emitting layer 322 of the second light-emitting device ED2 may be spaced apart from each other. Accordingly, light emission due to leakage current can be prevented.

[0197] The light-emitting layers 312 and 322 may have a multilayer structure. For example, the light-emitting layers 312 and 322 may further include at least one of a hole injection layer (HIL), a hole transport layer (HTL), and an electron injection layer (EIL).

[0198] The second electrodes 313 and 323 may comprise a conductive material capable of transmitting light. The second electrodes 313 and 323 may comprise a transparent conductive material, such as ITO or IZO. The second electrodes 313 and 323 may comprise aluminum (Al), magnesium (Mg), silver (Ag), or an alloy thereof, and may have a small thickness capable of transmitting light. Accordingly, light generated in each of the light-emitting layers 312 and 322 may be emitted through the second electrodes 313 and 323.

[0199] The first electrode 311 of the first light-emitting device ED1 may be spaced apart from the first electrode 321 of the second light-emitting device ED2, and a dam insulating layer 160 may be provided between the first electrodes 311 and 321. The dam insulating layer 160 may cover the edge of each of the first electrodes 311 and 321. The dam insulating layer 160 may comprise an organic insulating material. The dam insulating layer 160 may comprise an organic material different from that of the planarization layer 150 and may have a single-layer structure or a double-layer structure.

[0200] The dam insulating layer 160 may have an opening portion through which the first electrode 311 of the first light-emitting device ED1 is exposed, and light may be output through the opening portion. The light-emitting layer 312 and the second electrode 313 of the first light-emitting device ED1 may be stacked on the first electrode 311 exposed through the opening portion of the dam insulating layer 160.

[0201] The dam insulating layer 160 may have an opening portion through which the first electrode 321 of the second light-emitting device ED2 is exposed, and light may be emitted through the opening portion. The dam insulating layer 160 may have at least two opening portions provided on the first electrode 321, and thus at least two second light-emitting devices ED2 may be formed.

[0202] The light-emitting layer 322 and the second electrode 323 of the second light-emitting device ED2 may be stacked on the first electrode 321 exposed through the opening portion of the dam insulating layer 160. The light-emitting layer 322 and the second electrode 323 of the second light-emitting device ED2 may overlap the first electrode 321. In the second light-emitting unit LU2, at least two second light-emitting devices ED2 are arranged independently of each other and spaced apart by the dam insulating layer 160, but the second light-emitting devices ED2 may share the first electrode 321, the light-emitting layer 322, and the second electrode 323. Accordingly, the luminous efficiency of the second light-emitting devices ED2 can be improved.The size of the second light-emitting device ED2 may be smaller than the size of the first light-emitting device ED1.

[0203] The second electrode 313 of the first light-emitting device ED1 may be a common electrode electrically connected to the second electrode 323 of the second light-emitting device ED2.

[0204] An encapsulation layer 800 may be disposed on the light-emitting device layer including the first light-emitting device ED1 and the second light-emitting device ED2. The encapsulation layer 800 may prevent the light-emitting devices ED1 and ED2 from being damaged by moisture and external influences. The encapsulation layer 800 may have a multilayer structure. For example, the encapsulation layer 800 may include, but is not limited to, a first encapsulation layer 810, a second encapsulation layer 820, and a third encapsulation layer 830. The first encapsulation layer 810, the second encapsulation layer 820, and the third encapsulation layer 830 may include an insulating material. The second encapsulation layer 820 may include a material different from that of the first encapsulation layer 810 and the third encapsulation layer 830.For example, the first encapsulation layer 810 and the third encapsulation layer 830 may be inorganic encapsulation layers comprising an inorganic insulating material, and the second encapsulation layer 820 may be an organic encapsulation layer comprising an organic insulating material. Accordingly, it is possible to more effectively protect the light-emitting devices ED1 and ED2 from damage caused by moisture and external influences.

[0205] A lens layer comprising a first lens LZ1 and a second lens LZ2 may be arranged on the encapsulation layer 800.

[0206] The first lens LZ1 can be arranged in the first light-emitting unit LU1 on an upper end of the first light-emitting device ED1. The first lens LZ1 does not restrict the path of the light generated in the first light-emitting device ED1 in the left-right direction. Accordingly, the first lens LZ1 can output light with a wide viewing angle in the left-right direction. For example, the first lens LZ1 does not restrict the path of the light emitted from the first light-emitting device ED1 in the left-right direction to a specific angle. Accordingly, the first lens LZ1 can output light in the left-right direction with a wide viewing angle. Furthermore, the first lens LZ1 can restrict the path of the light generated in the first light-emitting device ED1 in the up-down direction to a specific angle and can thus output light with a narrow viewing angle in the up-down direction.

[0207] The second lens LZ2 can be arranged in the second light-emitting unit LU2 on an upper end of the second light-emitting device ED2. The second lens LZ2 limits the path of the light generated in the second light-emitting device ED2 in the left-right direction. Accordingly, the second lens LZ2 can output light with a narrow viewing angle in the left-right direction. For example, the second lens LZ2 limits the path of the light emitted from the second light-emitting device ED2 in the left-right direction. Accordingly, the second lens LZ2 can output light with a narrow viewing angle in the left-right direction. Furthermore, the second lens LZ2 can restrict the path of the light generated in the second light-emitting device ED2 in the up-down direction to a certain angle and can thus output light with a narrow viewing angle in the up-down direction.

[0208] A lens passivation layer 900 may be provided on the first lens LZ1 and the second lens LZ2 of each subpixel region. The lens passivation layer 900 may comprise an organic insulating material. The refractive index of the lens passivation layer 900 may be smaller than the refractive index of the first lens LZ1 and the refractive index of the second lens LZ2. Accordingly, light passing through the first lens LZ1 and the second lens LZ2 cannot be reflected toward the substrate 101.

[0209] Fig. 13 is an exemplary timing chart for explaining an exemplary driving method of a light-emitting display device according to an embodiment of the present disclosure.

[0210] In a light-emitting display device according to the present disclosure, in a state where one of the first viewing angle control transistor Tvc1 and the second viewing angle control transistor Tvc2 provided in the subpixel P is turned on, the pixel driving circuit PDC can be driven. Accordingly, in each of the subpixels P, only the first light-emitting device ED1 connected to the first viewing angle control transistor Tvc1 can output light, or only the second light-emitting device ED2 connected to the second viewing angle control transistor Tvc2 can output light.

[0211] The light output from the first light-emitting device ED1 may have the first viewing angle (for example, a wide viewing angle), and the light output from the second light-emitting device ED2 may have the second viewing angle (for example, a narrow viewing angle).

[0212] Accordingly, an image having the first viewing angle (e.g., wide viewing angle) can be displayed in a light-emitting region in which light is output only from the first light-emitting devices ED1, and an image having the second viewing angle (e.g., narrow viewing angle) can be displayed in a light-emitting region in which light is output only from the second light-emitting devices ED2.

[0213] The pixel driving circuit PDC applied in a light-emitting display device according to the present disclosure may include the light emission control unit ECU (e.g., a light emission control circuit) and the viewing angle control unit VCU (e.g., a viewing angle control circuit), as described with reference to Fig. 2 described.

[0214] The viewing angle control unit VCU may include the first viewing angle control transistor Tvc1 connected to the first light-emitting device ED1 and the second viewing angle control transistor Tvc2 connected to the second light-emitting device ED2. A gate of the first viewing angle control transistor Tvc1 and a gate of the second viewing angle control transistor Tvc2 may be commonly connected to a viewing angle control line VCL.

[0215] In this situation, the polarity type of the first viewing angle control transistor Tvc1 and the polarity type of the second viewing angle control transistor Tvc2 may be opposite. For example, if the first viewing angle control transistor Tvc1 is an N-type transistor, as shown in Fig. 2, the second viewing angle control transistor Tvc2 may be a P-type transistor.

[0216] The light emission control unit ECU may perform a function of supplying power to the first viewing angle control transistor Tvc1 or the second viewing angle control transistor Tvc2. For this purpose, the light emission control unit ECU may be configured as shown in Fig. 2 and can lead to other structures that are different from the one shown in Fig. 2 shown structure, can be changed.

[0217] Furthermore, the driving method for turning on the driving transistor Tdr provided for supplying current to the first viewing angle control transistor Tvc1 or the second viewing angle control transistor Tvc2 in the light emission control unit ECU can also be changed in various ways.

[0218] Therefore, an exemplary driving method of the light-emitting display device according to the present disclosure will be described below with reference to the Fig. 2 shown pixel control circuit PDC and the one in Fig. The timing diagram shown in Figure 13 will be briefly described.

[0219] Specifically, the exemplary driving method of the light-emitting display device according to the present disclosure will be described below with reference to an 8th light-emitting area EA8 that transitions from displaying the general image IM2 according to the privacy mode (PM) having the narrow viewing angle to the split mode (SM) in which the emergency information image IM4 is outputted with the first viewing angle (e.g., wide viewing angle), as shown in Fig. 7E, will be briefly described.

[0220] First, for example, when the 8th light-emitting area EA8 is driven in the privacy mode (PM), a viewing angle control signal VCS having a low level may be supplied to the sub-pixels P provided in the 8th light-emitting area EA8, as shown in Fig. 13. In Fig. 2, n may be 8, and thus an 8th viewing angle control signal VCS8 having a low level may be supplied to the subpixels P provided in the 8th light-emitting region EA8.

[0221] The first viewing angle control transistors Tvc1 and the second viewing angle control transistors Tvc2 provided in the subpixels P of the 8th light-emitting region EA8 may be connected to a viewing angle control line VCL, for example, an 8th viewing angle control line VCL8. In other words, the first viewing angle control transistors Tvc1 and the second viewing angle control transistors Tvc2 may be connected to the same viewing angle control line VCL and may be activated separately based on different signal levels.

[0222] In this situation, as in Fig. 2, the first viewing angle control transistor Tvc1 provided in the subpixels P may be an N-type transistor, and the second viewing angle control transistor Tvc2 may be a P-type transistor.

[0223] Accordingly, while the 8th light-emitting region EA8 is driven in the privacy mode (PM), the first viewing angle control transistors Tvc1 provided in the subpixels P of the 8th light-emitting region EA8 can be turned off by the 8th viewing angle control signal VCS8 having a low level, and the second viewing angle control transistors Tvc2 provided in the subpixels P of the 8th light-emitting region EA8 can be turned on by the 8th viewing angle control signal VCS8 having a low level.

[0224] Next, as in Fig. 13, when a low-level reference control signal RCS, a high-level gate signal GS, and a low-level emission signal EM are supplied to a k-th pixel line (where k is a natural number equal to or less than g) provided in the 8th light-emitting region EA8, the first emission transistor Tsw4a, the emission transistor Tsw4b, the first reference transistor Tsw2a, the second reference transistor Tsw2b, and the connection transistor Tsw3 provided in the subpixel P of the k-th pixel line may be turned on, and the switching transistor Tsw1 may be turned off. Here, the k-th pixel line may denote a pixel line provided in the 8th light-emitting region EA8, and specifically, the k-th pixel line may denote the subpixels provided in the 8th light-emitting region EA8 along the first direction X.

[0225] Accordingly, a reference voltage VREF can be supplied to the gate of the driving transistor Tdr, a reference voltage VREF can be supplied to the first electrode (anode) of the first light-emitting device ED1 and the first electrode (anode) of the second light-emitting device ED2 through the first emission transistor Tsw4a, the second emission transistor Tsw4b, the first reference transistor Tsw2a, the second reference transistor Tsw2b and the connection transistor Tsw3.

[0226] Therefore, the gate of the driving transistor Tdr, the first electrode (anode) of the first light-emitting device ED1 and the first electrode (anode) of the second light-emitting device ED2 can be initialized by the reference voltage VREF.

[0227] When the second terminal of the first reference transistor Tsw2a is connected to the first terminal of the first viewing angle control transistor Tvc1 and the second terminal of the second reference transistor Tsw2b is connected to the first terminal of the second viewing angle control transistor Tvc2, since the first viewing angle control transistor Tvc1 is turned off, the second light-emitting device ED2 can be initialized only by the reference voltage VREF transmitted through the second reference transistor Tsw2b and the second viewing angle control transistor Tvc2.

[0228] Hereinafter, a period in which the reference control signal RCS having the low level, the gate signal GS having the high level, and the emission signal EM having the low level are supplied to the k-th pixel row line provided in the 8th light-emitting region EA8 is referred to as an initialization period A.

[0229] Next, after the initialization period A, a sampling period B begins.

[0230] In the sampling period B, as in Fig. As shown in Figure 13, when the low-level reference control signal RCS, the low-level gate signal GS, and the high-level emission signal EM are supplied to the k-th pixel line provided in the 8th light-emitting region EA8, the switching transistor Tsw1, the first reference transistor Tsw2a, the second reference transistor Tsw2b, and the connection transistor Tsw3 provided in the subpixel connected to the k-th pixel line are turned on, and the first emission transistor Tsw4a and the second emission transistor Tsw4b may be turned off. In this situation, the driving transistor Tdr may also be turned on. Since the second emission transistor Tsw4b is turned off, even if the driving transistor Tdr is turned on, no current is supplied to the second light-emitting device ED2 through the second viewing angle control transistor Tvc2.

[0231] Accordingly, the data voltage VData transmitted through the data line DL can be charged to the first terminal of the storage capacitor Cst through the switching transistor Tsw1.

[0232] In this situation, the gate of the drive transistor Tdr, which is the second terminal of the storage capacitor Cst, can be charged with the first voltage EVDD and the threshold voltage (Vth) of the drive transistor Tdr.

[0233] Next, after sampling period B, an emission period C begins.

[0234] In the emission period C, as in Fig. 13, when the reference control signal RCS of the high level, the gate signal GS of the high level, and the emission signal EM of the low level are supplied to the k-th pixel line provided in the 8th light-emitting region EA8, the switching transistor Tsw1, the first reference transistor Tsw2a, the second reference transistor Tsw2b, and the connection transistor Tsw3 provided in the sub-pixel P connected to the k-th pixel line are turned off, and the first emission transistor Tsw4a and the second emission transistor Tsw4b may be turned on.

[0235] Accordingly, the first terminal of the storage capacitor Cst can be charged with the reference voltage VREF.

[0236] In this situation, a gate voltage (Vg) (for example, Vg = VREF - Vdat + ELVDD + Vth) can be supplied to the gate of the drive transistor Tdr, which is the second terminal of the storage capacitor Cst. A source voltage (Vs) (for example, Vs = ELVDD) can be supplied to a source of the drive transistor Tdr.

[0237] A level of a current flowing through the driving transistor Tdr to the first light-emitting device ED1 or the second light-emitting device ED2 may be proportional to the square of a voltage obtained by subtracting the threshold voltage (Vth) of the driving transistor Tdr from a difference voltage (hereinafter simply referred to as gate-source voltage (Vgs)) between the gate voltage Vg and the source voltage Vs of the driving transistor Tdr.

[0238] In the above example, a value (Vgs - Vth) obtained by subtracting the threshold voltage (Vth) of the drive transistor Tdr from the gate-source voltage (Vgs) does not include the threshold voltage (Vth) of the drive transistor Tdr and may include the data voltage VData and the reference voltage VREF (for example, Vgs - Vth = [Vref - VData + ELVDD + Vth] - [ELVDD] - [Vth] = VREF - VData). Here, the reference voltage VREF is a constant voltage, regardless of the threshold voltage (Vth) of the drive transistor Tdr.

[0239] Therefore, the threshold voltage (Vth) of the drive transistor Tdr does not affect the level of current flowing through the drive transistor Tdr, and the data voltage VData and the reference voltage VREF can affect the level of current flowing through the drive transistor Tdr.

[0240] Accordingly, even if the driving transistor Tdr deteriorates and thus the threshold voltage (Vth) of the driving transistor Tdr changes, the first light-emitting device ED1 or the second light-emitting device ED2 can output light having a luminance corresponding to the data voltage VData.

[0241] In this situation, since only the second viewing angle control transistor Tvc2 connected to the second light-emitting device ED2 is turned on by the eighth viewing angle control signal VCS8 having the low level in the privacy mode (PM), only light having the second viewing angle (for example, narrow viewing angle) can be output from the subpixels P of the k-th pixel row line provided in the 8th light-emitting region EA8.

[0242] This means that light having the second viewing angle can be output from the subpixels P provided in the 8th light-emitting area EA8, and thus, as shown in Fig. 7A, the general image IM2 having the second viewing angle (for example, narrow viewing angle or privacy mode) can be displayed in the 8th light-emitting area EA8.

[0243] The general image IM2 with the second viewing angle (e.g., narrow viewing angle) may only be visible to a user at a specific position, such as a passenger. Accordingly, this mode may be the private mode (PM), as described above. This allows a passenger sitting next to the driver to comfortably view or view content in the second mode (e.g., private viewing mode) without disturbing the driver, as content can be displayed with a narrow viewing angle.

[0244] The above-described operations may be repeated in all pixel row lines provided in the 8th light-emitting region EA8 while the 8th viewing angle control signal VCS8 having the low level is supplied to the 8th light-emitting region EA8.

[0245] Next, when the emergency information image IM4 is received with the first viewing angle (e.g., wide viewing angle) while displaying contents in the privacy mode (PM) in which the general image IM2 is displayed with the second viewing angle (e.g., narrow viewing angle), the control driver 400 may supply the 8th viewing angle control signal VCS8 with the high level to the subpixels P provided in the 8th light-emitting area EA8, as shown in Fig. 13 to convert the 8th light-emitting area EA8 from the narrow viewing angle to the wide viewing angle to display the emergency information so that it can be seen by both the driver and the passenger.

[0246] The first viewing angle control transistors Tvc1 and the second viewing angle control transistors Tvc2 provided in the subpixels P of the 8th light-emitting region EA8 may be connected to the 8th viewing angle control line VCL8.

[0247] In this situation, as in Fig. 2, the first viewing angle control transistor Tvc1 provided in the subpixels P may be an N-type transistor, and the second viewing angle control transistor Tvc2 may be a P-type transistor.

[0248] Accordingly, the first viewing angle control transistor Tvc1 provided in the subpixels P of the 8th light-emitting region EA8 can be turned on by the 8th viewing angle control signal VCS8 having the high level, and the second viewing angle control transistor Tvc2 can be turned off by the 8th viewing angle control signal VCS8 having the high level.

[0249] Next, the initialization period A and the sampling period B may be performed for the k-th pixel row line provided in the 8th light-emitting area EA8.

[0250] This means that for the k-th pixel line, the same initialization period A and sampling period B as the initialization period A and sampling period B described in the private mode (PM) can elapse.

[0251] Accordingly, the driving transistor Tdr provided in the k-th pixel row line can be initialized, and the data voltage VData can be supplied to the subpixel P.

[0252] Finally, after sampling period B, emission period C begins.

[0253] In the emission period C, as in Fig. 13, when the reference control signal RCS of the high level, the gate signal GS of the high level, and the emission signal EM of the low level are supplied to the k-th pixel line provided in the eighth light-emitting region EA8, the switching transistor Tsw1, the first reference transistor Tsw2a, the second reference transistor Tsw2b, and the connection transistor Tsw3 provided in the sub-pixel P connected to the k-th pixel line are turned off, and the first emission transistor Tsw4a and the second emission transistor Tsw4b may be turned on.

[0254] Accordingly, current flows through the drive transistor Tdr toward the first viewing angle control transistor Tvc1 and the second viewing angle control transistor Tvc2.

[0255] In this situation, in the split mode (SM), since only the first viewing angle control transistor Tvc1 connected to the first light-emitting device ED1 is turned on by the 8th viewing angle control signal VCS8 having the high level, only light having the first viewing angle (for example, wide viewing angle) can be output from the subpixels P connected to the k-th pixel row line provided in the 8th light-emitting area EA8.

[0256] This means that light having the first viewing angle can be output from the subpixels P provided in the 8th light-emitting area EA8, and thus the emergency information image IM4 having the first viewing angle (for example, wide viewing angle) can be displayed in the 8th light-emitting area EA8, as shown in Fig. 7E.

[0257] The emergency information image IM4 with the first viewing angle (e.g., wide viewing angle) can be viewed by users at any position, such as a driver and a passenger. Accordingly, this mode can be the split mode (SM) as described above.

[0258] This means that the mode of the 8th light-emitting area EA8 can be changed from the private mode (PM) to the sharing mode (SM) by the method described above.

[0259] The mode of each of the remaining light-emitting regions can also be changed from the private mode (PM) to the split mode (SM) or from the split mode (SM) to the private mode (PM) by the same method as described above. Likewise, each of the light-emitting regions can be individually switched between the private mode (PM) and the split mode (SM) on a pixel-block-by-pixel-block basis (e.g., one light-emitting region at a time). For example, each of the light-emitting regions (e.g., pixel blocks) can be selectively controlled by the control device in the first mode (e.g., split mode) or the second mode (e.g., private mode). Therefore, within the display area, only a local area where images or private content requiring privacy are displayed can be displayed in the narrow viewing angle.In this way, a driver and a passenger can share and view content with a wide viewing angle on the same screen. However, in an area of ​​the screen located in front of the passenger, a small portion of the screen can be activated in the second mode (e.g., private mode) to provide sensitive information, such as personal notifications, with a narrow viewing angle or to provide information relevant only to the passenger so as not to distract the driver, but embodiments are not limited to this. For example, the screen can be any type of display device, such as a television, a monitor, a smartphone, a tablet, etc.

[0260] Furthermore, according to an embodiment of the present disclosure, a user may view the display device while in public, with most of the content displayed in the first mode (e.g., share mode) with a wide viewing angle, but the user may select certain types of sensitive information to be displayed only on a small area or a selected area of ​​the screen with a narrow viewing angle according to the second mode (e.g., private mode), such as personal messages or other notifications, etc. In this way, a user may view sensitive information privately while preventing other nearby people (e.g., colleagues, strangers, etc.) from viewing that information.

[0261] Likewise, since each individual pixel block or light-emitting area can be selectively controlled to operate on a pixel block-by-pixel block basis in the first mode (e.g., split mode) and the second mode (e.g., private mode), a user can have the freedom to selectively designate any specific area on the screen as a type of "secret" display area or "special" display area for displaying sensitive information in a narrow viewing angle mode, while the rest of the screen can be operated in a wide viewing angle mode that can be viewed by both the driver and the passenger.

[0262] Furthermore, in accordance with one embodiment, a split screen may be used by two or more video game players, and different portions of the screen may be operated in the first mode (e.g., split mode) or the second mode (e.g., private mode) such that some content may be seen by all players, while also providing specific content for individual players in a portion of the screen directly in front of that specific player, etc.

[0263] Fig. 14 is an exemplary diagram illustrating a connection structure of light-emitting regions and viewing angle control lines in a light-emitting display device according to an embodiment of the present disclosure. In the following description, details corresponding to the same or similar details described with reference to the Fig. 1 to Fig. 13 are omitted or briefly described.

[0264] Hereinafter, a method in which only the first light-emitting units LU1 or only the second light-emitting units LU2 in each of the light-emitting regions are driven will be described with reference to Fig. 1 to Fig. 14 are described.

[0265] As described above, the first viewing angle control transistor Tvc1 may be connected between the driving transistor Tdr, which controls the level of the current supplied to the first light-emitting unit LU1 (or the second light-emitting unit LU2), and the first light-emitting unit LU1, and the second viewing angle control transistor Tvc2 may be connected between the driving transistor Tdr and the second light-emitting unit LU2. In this situation, as shown in Fig. 2, the second emission transistor Tsw4b for controlling the light emission timing of the first light-emitting device ED1 (or the second light-emitting device ED2) may be further provided between the driving transistor Tdr and the first viewing angle control transistor Tvc1 (or the second viewing angle control transistor Tvc2).

[0266] The first light-emitting unit LU1 may include the first light-emitting device ED1, which is controlled by the first viewing angle control transistor Tvc1, and the first lens LZ1 arranged on the first light-emitting device ED1. Similarly, the second light-emitting unit LU2 may include the second light-emitting device ED2, which is controlled by the second viewing angle control transistor Tvc2, and the second lens LZ2 arranged on the second light-emitting device ED2.

[0267] The display area DA of the light-emitting display panel 100 may be divided into at least two light-emitting areas along the first direction X, and the display area DA may be divided along the second direction Y, which is different from the first direction X. For example, a light-emitting display panel 100 divided into four light-emitting areas along the first direction X and into three light-emitting areas along the second direction Y is Fig. 1 and Fig. 14. This means that a light-emitting display panel 100, which is divided into 12 light-emitting areas EA1 to EA12, is Fig. 1 and Fig. 14. However, embodiments are not limited thereto, and more than 12 or fewer than 12 light-emitting regions may be provided in accordance with design considerations.

[0268] In this situation, gates of the first viewing angle control transistors Tvc1 and gates of the second viewing angle control transistors Tvc2 provided in an s-th light-emitting region among the light-emitting regions may be connected to an s-th viewing angle control line to which an s-th viewing angle control signal is supplied. Likewise, gates of the first viewing angle control transistors Tvc1 and gates of the second viewing angle control transistors Tvc2 provided in an s+1-th light-emitting region among the light-emitting regions may be connected to an s+1-th viewing angle control line to which an s+1-th viewing angle control signal is supplied. Here, s is a natural number smaller than the number of light-emitting regions provided in the light-emitting display panel 100. For example, in the Fig. 14 may be any natural number from 1 to 11.

[0269] Furthermore, the s-th viewing angle control line and the s+1-th viewing angle control line may be connected to the control driver 400, which generates the s-th viewing angle control signal and the s+1-th viewing angle control signal.

[0270] For example, gates of the first viewing angle control transistors Tvc1 and gates of the second viewing angle control transistors Tvc2 formed in a first light-emitting region EA1 may be Fig. 14 may be connected to a first viewing angle control line VCL1 to which a first viewing angle control signal VCS1 is supplied. Likewise, gates of the first viewing angle control transistors Tvc1 and gates of the second viewing angle control transistors Tvc2 provided in a second light-emitting region EA2 of the light-emitting regions may be connected to a second viewing angle control line VCL2 to which a second viewing angle control signal VCS2 is supplied. Furthermore, gates of the first viewing angle control transistors Tvc1 and gates of the second viewing angle control transistors Tvc2 provided in a twelfth light-emitting region EA12 of the light-emitting regions may be connected to a twelfth viewing angle control line VCL12 to which a twelfth viewing angle control signal VCS12 is supplied.

[0271] Furthermore, the first viewing angle control line VCL1 to the twelfth viewing angle control line VCL12 may be connected to the control driver 400, which generates the first viewing angle control signal VCS1 to the twelfth viewing angle control signal VCS12.

[0272] In particular, the first viewing angle control line VCL1 to the twelfth viewing angle control line VCL12 may be connected to a first viewing angle control signal generator 701 to the twelfth viewing angle control signal generator 712 provided in the control signal generator 420 of the control driver 400, as shown in Fig. 14. This means that the first viewing angle control signal generator 701 to the twelfth viewing angle control signal generator 712 can generate the first viewing angle control signal VCS1 to the twelfth viewing angle control signal VCS12.

[0273] Accordingly, each of the light-emitting regions EA1 to EDA12 can be independently controlled and can be dynamically configured or reset to operate in either the split mode or the private mode. For example, the subpixels P provided in the first light-emitting region EA1 can be controlled by the first viewing angle control signal VCS1, the subpixels P provided in the second light-emitting region EA2 can be controlled by the second viewing angle control signal VCS2, and the subpixels P provided in the twelfth light-emitting region EA12 can be controlled by the twelfth viewing angle control signal VCS12.

[0274] First, after a vehicle is started and the vehicle is driven by a driver, a vehicle operation information signal may be transmitted from the external system 600 to the control driver 400.

[0275] In this situation, a first viewing angle control signal generator 701 to a sixth viewing angle control signal generator 706 may generate a high-level first viewing angle control signal VCS1 to a sixth viewing angle control signal VCS6. The first viewing angle control signal VCS1 to a sixth viewing angle control signal VCS6 may be transmitted to a first light-emitting region EA1 to a sixth light-emitting region EA6 through a first viewing angle control line VCL1 to a sixth viewing angle control line VCL6.

[0276] Subpixels P provided in the first light-emitting region EA1 to the sixth light-emitting region EA6 may be provided with first viewing angle control transistors Tvc1 and second viewing angle control transistors Tvc2 connected to the first viewing angle control line VCL1 to the sixth viewing angle control line VCL6. In this situation, as shown in Fig. 2, the first viewing angle control transistors Tvc1 may be N-type transistors, and the second viewing angle control transistors Tvc2 may be P-type transistors.

[0277] Accordingly, in the subpixels P provided in the first light-emitting region EA1 to the sixth light-emitting region EA6, only the first viewing angle control transistors Tvc1 can be turned on, and the second viewing angle control transistors Tvc2 can be turned off by the first viewing angle control signal VCS1 to the sixth viewing angle control signal VCS6 having a high level (for example, to operate the first light-emitting region EA1 to the sixth light-emitting region EA6 in the wide viewing angle split mode).

[0278] Accordingly, in the first light-emitting region EA1 to sixth light-emitting region EA6, as shown in Fig. As shown in Figure 7A, the first image with a wide viewing angle in the left-right direction, for example, the vehicle operation information image, is displayed by the first light-emitting units LU1. Accordingly, both a driver and a passenger can view the vehicle operation information image.

[0279] In other words, while a vehicle is being operated, the vehicle operation information image IM1 should be required to be displayed, and in particular, the vehicle operation information image IM1 may have the first viewing angle, for example, the wide viewing angle, so that it can be seen by both a driver and a passenger.

[0280] Next, while a vehicle is being operated by a driver, when a TV, radio, Internet, or file playback program is selected by a driver or a passenger, a general image signal may be transmitted from the external system 600 to the control driver 400.

[0281] In this situation, a 7th viewing angle control signal generator 707 to a 12th viewing angle control signal generator 712 can generate a low-level 7th viewing angle control signal VCS7 to a 12th viewing angle control signal VCS12. The 7th viewing angle control signal VCS7 to a 12th viewing angle control signal VCS12 can be transmitted to a 7th light-emitting area EA7 to a 12th light-emitting area EA12 through a 7th viewing angle control line VCL7 to a 12th viewing angle control line VCL12.

[0282] Subpixels P provided in the 7th light-emitting region EA7 to the 12th light-emitting region EA12 may be provided with first viewing angle control transistors Tvc1 and second viewing angle control transistors Tvc2 connected to the 7th viewing angle control line VCL7 to the 12th viewing angle control line VCL12. In this situation, as shown in Fig. 2, the first viewing angle control transistors Tvc1 may be N-type transistors, and the second viewing angle control transistors Tvc2 may be P-type transistors.

[0283] Accordingly, in the subpixels P provided in the seventh light-emitting region EA7 to the twelfth light-emitting region EA12, only the second viewing angle control transistors Tvc2 can be turned on by the 7th viewing angle control signal VCS7 to the 12th viewing angle control signal VCS12 having the low level, and the first viewing angle control transistors Tvc1 can be turned off (for example, to operate the 7th light-emitting region EA7 to the 12th light-emitting region EA12 in the narrow viewing angle privacy mode).

[0284] Accordingly, in the seventh light-emitting region EA7 to twelfth light-emitting region EA12, as shown in Fig. As shown in Figure 7A, the second image having a narrow viewing angle in the left-right direction, for example, the general image, is displayed by the second light-emitting units LU2. Accordingly, only a passenger can see the general image.

[0285] In other words, while a vehicle is operating or while driving, the general image IM2 that may disturb or distract a driver may have the second viewing angle, for example, the narrow viewing angle, so that it can only be seen by a passenger.

[0286] Next, when a vehicle is not operating or is stopped in a parking mode, an operation stop signal may be transmitted from the external system 600 to the control driver 400.

[0287] In this situation, when the entire screen of a light-emitting display panel 100 is converted into a screen for viewing the general image IM2 by a user's selection or by an automatic function of the control driver 400, the first viewing angle control signal generator 701 to the twelfth viewing angle control signal generator 712 can generate the first viewing angle control signal VCS1 to the twelfth viewing angle control signal VCS12 at a high level. The first viewing angle control signal VCS1 to the twelfth viewing angle control signal VCS12 can be transmitted to the first light-emitting area EA1 to the twelfth light-emitting area EA12 through the first viewing angle control line VCL1 to the twelfth viewing angle control line VCL12.

[0288] Accordingly, in the subpixels P provided in the first light-emitting region EA1 to the twelfth light-emitting region EA12, only the first viewing angle control transistors Tvc1 can be turned on and the second viewing angle control transistors Tvc2 can be turned off by the first viewing angle control signal VCS1 to the twelfth viewing angle control signal VCS12 having the high level.

[0289] Therefore, in the first light-emitting region EA1 to twelfth light-emitting region EA12, as shown in Fig. As shown in Figure 7B, the second image IM2 with the wide viewing angle in the left-right direction, for example, the general normal image, is displayed by the first light-emitting units LU1. Accordingly, both a driver and a passenger can see the general image (for example, both the driver and the passenger can enjoy the same movie, streaming video, etc.).

[0290] In other words, while a vehicle is operating, the general image IM2 may disturb or distract a driver. However, when a vehicle is not operating or is stopped in a parking mode, the probability of an accident occurring due to the general image IM2 is low. Therefore, when a vehicle is not operating or is stopped in the parking mode, as in Fig. 7B, the general image IM2 having the first viewing angle, for example, the wide viewing angle, may be displayed throughout the entire light-emitting display panel 100.

[0291] For further description, in a light-emitting display device according to the present disclosure, each of the light-emitting regions EA1 to EA12 may output an image having the wide viewing angle or may output an image having the narrow viewing angle.

[0292] Further, in a light-emitting display device according to the present disclosure, depending on a driving mode of a vehicle, a user selection, etc., the same type of image (for example, the general image IM2) may have the narrow viewing angle or the wide viewing angle.

[0293] Next, while a vehicle is being operated by a driver or is moving, when the third image IM3, for example, the vehicle operation information supplementary image such as navigation, is selected by a driver or a passenger, a vehicle operation information supplementary signal may be transmitted from the external system 600 to the control driver 400.

[0294] When the vehicle operation information additional signal is transmitted from the external system 600 to the control driver 400 and the vehicle operation information additional image IM3 is set to be displayed in the seventh light-emitting area EA7 to the ninth light-emitting area EA9 as shown in Fig. 7C, the viewing angle control signal generators 707 to 709 can transmit the viewing angle control signals VCS7 to VCS9 having the high level to the 7th light-emitting area EA7 to the 9th light-emitting area EA9.

[0295] Accordingly, in the 7th light-emitting area EA7 to the 9th light-emitting area EA9, the third image IM3 having the wide viewing angle in the left-right direction, for example, the vehicle operation information supplementary image, can be displayed by the first light-emitting units LU1, as shown in Fig. 7C. Therefore, both a driver and a passenger can see the vehicle operation information supplementary image.

[0296] In other words, while a vehicle is being operated or while the vehicle is moving, the vehicle operation information supplementary image IM3 is an image that is advantageous to both a driver and a passenger, and thus the vehicle operation information supplementary image IM3 may have the first viewing angle, for example, the wide viewing angle, so that it can be seen by both a driver and a passenger.

[0297] Furthermore, when the vehicle operation information additional signal is transmitted from the external system 600 to the control driver 400 and the vehicle operation information additional image IM3 is set to be displayed in a 7th light-emitting area EA7 and a 10th light-emitting area EA10 as shown in Fig. 7D, a 7th viewing angle control signal generator 707 and a 10th viewing angle control signal generator 710 transmit a 7th viewing angle control signal VCS7 and a 10th viewing angle control signal VCS10 having the high level to the 7th light-emitting area EA7 and the 10th light-emitting area EA10.

[0298] Accordingly, in the 7th light-emitting area EA7 and the 10th light-emitting area EA10, the third image IM3 having the wide viewing angle in the left-right direction, for example, the vehicle operation information supplementary image, can be displayed by the first light-emitting units LU1, as shown in Fig. 7D. Therefore, both a driver and a passenger can see the vehicle operation information supplementary image.

[0299] In other words, while a vehicle is being operated or while the vehicle is moving, the vehicle operation information supplementary image IM3 is an image that is advantageous to both a driver and a passenger, and thus the vehicle operation information supplementary image IM3 may have the first viewing angle, for example, the wide viewing angle, so that it can be seen by both a driver and a passenger.

[0300] In particular, in a light-emitting display device according to the present disclosure, as shown in the Fig. 7C and Fig. 7D, a position at which the image with the first viewing angle is output and a position at which the image with the second viewing angle is output can be changed not only along the first direction X but also along the second direction Y.

[0301] That is, according to a light-emitting display device according to the present disclosure, the position where the image with the first viewing angle is output and the position where the image with the second viewing angle is output can be freely changed. Therefore, a driver or a passenger can freely change the position where the image with the first viewing angle is output and the position where the image with the second viewing angle is output.

[0302] For example, a driver or a passenger can Fig. 7C (for example, the seventh light-emitting region EA7 to the ninth light-emitting region EA9) or the region shown in Fig. 7D (for example, the 7th light-emitting area EA7 and the 10th light-emitting area EA10) to the position where the vehicle operation information auxiliary image IM3 such as navigation is output by using the external system 600.

[0303] However, a position where an image affecting safe driving, such as the vehicle operation information image IM1, is output may be set to a specific area (for example, the first light-emitting area EA1 to the sixth light-emitting area EA6) by the external system 600 or the control driver 400.

[0304] Finally, while a vehicle is being operated by a driver or a vehicle is not being operated or is stopped in a parking mode, when the emergency information image IM4 is received, an emergency information signal may be transmitted from the external system 600 to the control driver 400.

[0305] For example, when the emergency information signal is received, an 8th viewing angle control signal generator 708 may generate a high-level 8th viewing angle control signal VCS8. The 8th viewing angle control signal VCS8 may be transmitted to an 8th light-emitting area EA8 through an eighth viewing angle control line VCL8.

[0306] Accordingly, in the subpixels P provided in the 8th light-emitting region EA8, only the first viewing angle control transistors Tvc1 can be turned on, and the second viewing angle control transistors Tvc2 can be turned off by the 8th viewing angle control signal VCS8 having the high level.

[0307] Accordingly, in the 8th light-emitting area EA8, as shown in Fig. 7E, the fourth image IM4 having the wide viewing angle in the left-right direction, for example, the emergency information image, may be displayed by the first light-emitting units LU1 (for example, in the split mode).

[0308] In other words, while a vehicle is being operated or the vehicle is moving, the emergency information image IM4 is an image that needs to be seen not only by a driver but also by a passenger, and therefore, the emergency information image IM4 may have the first viewing angle, for example, the wide viewing angle, so that it can be seen by both a driver and a passenger.

[0309] In this situation, the emergency information image IM4 can be displayed through any of the light-emitting areas in which the general image IM2 is displayed with the second viewing angle (narrow viewing angle), as shown in Fig. 7E.

[0310] However, as in Fig. 7A and Fig.7F, the emergency information image IM4 may be displayed by any of the light-emitting areas in which the vehicle operation information image IM1 is displayed at the first viewing angle (for example, wide viewing angle).

[0311] This means that in a light-emitting display device according to the present disclosure, each of the light-emitting regions (e.g., EA1 to EA12) can be independently controlled, and thus each of the light-emitting regions (e.g., EA1 to EA12) can independently display an image with the first viewing angle (e.g., wide viewing angle) or an image with the second viewing angle (e.g., narrow viewing angle). Likewise, the user can select which regions should display content with the wide viewing angle (e.g., split mode) and which regions should display content with the narrow viewing angle (e.g., private mode).

[0312] The features of the light-emitting display device according to an embodiment of the present disclosure are briefly summarized as follows.

[0313] A light-emitting display panel according to an embodiment of the present disclosure includes a display region provided with subpixels and a non-display region provided outside the display region, wherein each of the subpixels includes a first light-emitting unit driven by a first viewing angle control transistor and a second light-emitting unit driven by a second viewing angle control transistor, a first lens provided in the first light-emitting unit and a second lens provided in the second light-emitting unit having different shapes, and a polarity type of the first viewing angle control transistor is different from a polarity type of the second viewing angle control transistor.

[0314] When the first viewing angle control transistor is an N-type transistor, the second viewing angle control transistor is a P-type transistor, and when the first viewing angle control transistor is a P-type transistor, the second viewing angle control transistor is an N-type transistor.

[0315] The first viewing angle control transistor is connected between the first light-emitting unit and a driving transistor that controls the magnitude of the current supplied to the first light-emitting unit or the second light-emitting unit, and the second viewing angle control transistor is connected between the driving transistor and the second light-emitting unit.

[0316] The first light-emitting unit includes a first light-emitting device controlled by the first viewing angle control transistor and a first lens arranged on the first light-emitting device, and the second light-emitting unit includes a second light-emitting device controlled by the second viewing angle control transistor and a second lens arranged on the second light-emitting device.

[0317] The display area is divided into at least two light-emitting areas along a first direction, the display area is divided into at least two light-emitting areas along a second direction different from the first direction, gates of first viewing angle control transistors and second viewing angle control transistors provided in an s-th light-emitting area among the light-emitting areas are connected to an s-th viewing angle control line to which an s-th viewing angle control signal is supplied (where s is a natural number smaller than the number of light-emitting areas), and gates of first viewing angle control transistors and second viewing angle control transistors provided in an s+1-th light-emitting area among the light-emitting areas are connected to an s+1-th viewing angle control line,which is supplied with an s+1th viewing angle control signal.,

[0318] The s-th viewing angle control line and the (s+1)-th viewing angle control line are connected to a control driver that generates the s-th viewing angle control signal and the (s+1)-th viewing angle control signal.

[0319] A light-emitting display device according to an embodiment of the present disclosure includes a display region provided with subpixels and a non-display region provided outside the display region, each of the subpixels including a first light-emitting unit driven by a first viewing angle control transistor and a second light-emitting unit driven by a second viewing angle control transistor, wherein a first viewing angle of light emitted by the first light-emitting unit is different from a second viewing angle of light emitted by the second light-emitting unit, the display region is divided into at least two light-emitting regions along a first direction, the display region is divided into at least two light-emitting regions along a second direction different from the first direction,is divided into at least two light-emitting areas and in each of the light-emitting areas only first light-emitting units or only second light-emitting units are controlled.,

[0320] The first viewing angle control transistor is connected between the first light-emitting unit and a driving transistor that controls the magnitude of the current supplied to the first light-emitting unit or the second light-emitting unit, and the second viewing angle control transistor is connected between the driving transistor and the second light-emitting unit.

[0321] Each of the light-emitting areas is controlled independently.

[0322] When the first viewing angle control transistor is an N-type transistor, the second viewing angle control transistor is a P-type transistor, and when the first viewing angle control transistor is a P-type transistor, the second viewing angle control transistor is an N-type transistor.

[0323] When the first viewing angle control transistor is turned on, the second viewing angle control transistor is turned off, and when the first viewing angle control transistor is turned off, the second viewing angle control transistor is turned on.

[0324] The first light-emitting unit includes a first light-emitting device driven by the first viewing angle control transistor and a first lens arranged on the first light-emitting device, and the second light-emitting unit includes a second light-emitting device driven by the second viewing angle control transistor and a second lens arranged on the second light-emitting device.

[0325] A viewing angle of light output from the first light-emitting device through the first lens and a viewing angle of light output from the second light-emitting device through the second lens are different from each other.

[0326] Gates of first viewing angle control transistors and second viewing angle control transistors provided in an s-th light-emitting region among the light-emitting regions are connected to an s-th viewing angle control line to which an s-th viewing angle control signal is supplied (where s is a natural number smaller than the number of light-emitting regions), and gates of first viewing angle control transistors and second viewing angle control transistors provided in an s+1-th light-emitting region among the light-emitting regions are connected to an s+1-th viewing angle control line to which an s+1-th viewing angle control signal is supplied.

[0327] The s-th viewing angle control line and the s+1-th viewing angle control line are connected to a control driver that generates the s-th viewing angle control signal and the s+1-th viewing angle control signal.

[0328] The light-emitting display panel and the light-emitting display device according to the present disclosure can be applied to any electronic devices including a light-emitting display panel.For example, the light-emitting display device according to the present disclosure can be applied to a virtual reality (VR) device, an augmented reality (AR) device, a mobile device, a video phone, a smart watch, a watch phone, a wearable device, a foldable device, a rollable device, a bendable device, a flexible device, a curved device, an electronic notebook, an e-book, a PMP (portable multimedia player), a PDA (personal digital assistant), an MP3 player, a mobile medical device, a desktop PC, a laptop PC, a netbook computer, a workstation, a navigation device, a vehicle navigation device, vehicle display devices, a television, wallpaper display devices, signage devices, gaming devices, laptops, monitors, cameras, camcorders, and home appliances.

[0329] According to a light-emitting display device according to an embodiment of the present disclosure, in each of light-emitting regions provided along a first direction of a light-emitting display panel and light-emitting regions provided along a second direction different from the first direction, only first light-emitting units can be driven or only second light-emitting units can be driven, and thus only light having a first viewing angle can be output or only light having a second viewing angle can be output.

[0330] Specifically, a viewing angle of light emitted from each of the light-emitting regions may be changed to the first viewing angle or the second viewing angle based on the image type output from each of the light-emitting regions.

[0331] Further, the viewing angle of light emitted from each of the light-emitting portions may be changed to the first viewing angle or the second viewing angle based on the user's request.

[0332] Therefore, according to the light-emitting display device according to an embodiment of the present disclosure, a viewing angle of each of the light-emitting regions provided along the first direction and the second direction of the light-emitting display panel can be changed, and thus the image type output from each of the light-emitting regions can be freely changed. Accordingly, users can easily and quickly recognize the images they need through the light-emitting display device.

[0333] The above-described feature, structure, and effect of the present disclosure are included in at least one embodiment of the present disclosure, but are not limited to only one embodiment. Furthermore, those skilled in the art can implement the feature, structure, and effect described in at least one embodiment of the present disclosure by combining or modifying other embodiments. Therefore, the content associated with the combination and modification should be construed as being within the scope of the present disclosure.

[0334] It will be apparent to those skilled in the art that various modifications and variations can be made to the present disclosure without departing from the scope of the disclosures. Therefore, it is intended that the present disclosure cover the modifications and variations of this disclosure provided they are within the scope of the present disclosure. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] KR 10 - 2023 - 0 144 944

[0001]

Claims

[1] A light-emitting display panel (100) comprising: a display area (DA) having subpixels (P) and a non-display area outside the display area (DA), where each of the subpixels (P) has: a first light-emitting unit (LU1) adapted to be controlled by a first viewing angle control transistor (Tvc1); and a second light-emitting unit (LU2) adapted to be controlled by a second viewing angle control transistor (Tvc2), wherein a shape of a first lens (LZ1) contained in the first light-emitting unit (LU1) is different from a shape of a second lens (LZ2) contained in the second light-emitting unit (LU2), and wherein a polarity type of the first viewing angle control transistor (Tvc1) is different from a polarity type of the second viewing angle control transistor (Tvc2). [2] The light-emitting display panel (100) according to claim 1, wherein the first viewing angle control transistor (Tvc1) is an N-type transistor and the second viewing angle control transistor (Tvc2) is a P-type transistor, or wherein the first viewing angle control transistor (Tvc1) is a P-type transistor and the second viewing angle control transistor (Tvc2) is an N-type transistor. [3] The light-emitting display panel (100) according to claim 1 or 2, wherein the first viewing angle control transistor (Tvc1) is connected between the first light-emitting unit (LU1) and a driving transistor (Tdr) configured to control a magnitude of a current supplied to the first light-emitting unit (LU1) or the second light-emitting unit (LU2), and wherein the second viewing angle control transistor (Tvc2) is connected between the driving transistor (Tdr) and the second light-emitting unit (LU2). [4] The light-emitting display panel (100) according to any one of claims 1 to 3, wherein the first light-emitting unit (LU1) comprises: a first light-emitting device (ED1) adapted to be controlled by the first viewing angle control transistor (Tvc1); and the first lens (LZ1) arranged on the first light-emitting device (ED1), and wherein the second light-emitting unit (LU2) comprises: a second light-emitting device (ED2) adapted to be controlled by the second viewing angle control transistor (Tvc2); and the second lens (LZ2) arranged on the second light-emitting device (ED2). [5] The light-emitting display panel (100) according to any one of claims 1 to 4, wherein the display area (DA) is divided into light-emitting areas (EA1, ... EA12) having at least two light-emitting areas arranged along a first direction and at least two light-emitting areas arranged along a second direction different from the first direction, wherein gates of first viewing angle control transistors (Tvc1) and second viewing angle control transistors (Tvc2) in an s-th light-emitting region of the light-emitting regions (EA1, ... EA12) are connected to an s-th viewing angle control line configured to receive an s-th viewing angle control signal, where s is a natural number smaller than a number of the light-emitting regions (EA1, ... EA12), and wherein gates of first viewing angle control transistors (Tvc1) and second viewing angle control transistors (Tvc2) in an s+1-th light-emitting region of the light-emitting regions (EA1, ... EA12) are connected to an s+1-th viewing angle control line configured to receive an s+1-th viewing angle control signal. [6] The light-emitting display panel (100) according to claim 5, wherein the s-th viewing angle control line and the s+1-th viewing angle control line are connected to a control driver (400) configured to generate the s-th viewing angle control signal and the s+1-th viewing angle control signal. [7] A light-emitting display device comprising: a display area (DA) having subpixels (P) and a non-display area (NDA) outside the display area (DA), where each of the subpixels (P) has: a first light-emitting unit (LU1) adapted to be controlled by a first viewing angle control transistor (Tvc1); and a second light-emitting unit (LU2) adapted to be controlled by a second viewing angle control transistor (Tvc2), wherein a first viewing angle of light emitted by the first light-emitting unit (LU1) is different from a second viewing angle of light emitted by the second light-emitting unit (LU2), wherein the display area (DA) is divided into light-emitting areas (EA1, ... EA12) having at least two light-emitting areas arranged along a first direction and at least two light-emitting areas arranged along a second direction different from the first direction, and wherein the light-emitting regions (EA1, ... EA12) are configured to emit light selectively only via first light-emitting units (LU1) or only via second light-emitting units (LU2). [8] The light-emitting display device according to claim 7, wherein the first viewing angle control transistor (Tvc1) is connected between the first light-emitting unit (LU1) and a driving transistor (Tdr) configured to control a magnitude of a current supplied to the first light-emitting unit (LU1) or the second light-emitting unit (LU2), and wherein the second viewing angle control transistor (Tvc2) is connected between the driving transistor (Tdr) and the second light-emitting unit (LU2). [9] The light-emitting display device according to claim 7 or 8, wherein each of the light-emitting regions (EA1, ... EA12) is arranged to be driven independently. [10] The light-emitting display device according to any one of claims 7 to 9, wherein the first viewing angle control transistor (Tvc1) is an N-type transistor and the second viewing angle control transistor (Tvc2) is a P-type transistor, or wherein the first viewing angle control transistor (Tvc1) is a P-type transistor and the second viewing angle control transistor (Tvc2) is an N-type transistor. [11] The light-emitting display device according to any one of claims 7 to 10, wherein when the first viewing angle control transistor (Tvc1) is turned on, the second viewing angle control transistor (Tvc2) is turned off, and wherein when the first viewing angle control transistor (Tvc1) is turned off, the second viewing angle control transistor (Tvc2) is turned on. [12] The light-emitting display device according to claim 7, wherein the first light-emitting unit (LU1) comprises: a first light-emitting device (ED1) adapted to be controlled by the first viewing angle control transistor (Tvc1); and a first lens (LZ1) arranged on the first light-emitting device (ED1), and wherein the second light-emitting unit (LU2) comprises: a second light-emitting device (ED2) adapted to be controlled by the second viewing angle control transistor (Tvc2); and a second lens (LZ2) arranged on the second light-emitting device (ED2). [13] The light-emitting display device according to claim 12, wherein a viewing angle of light emitted from the first light-emitting device (ED1) through the first lens (LZ1) and a viewing angle of light emitted from the second light-emitting device (ED2) through the second lens (LZ2) are different from each other. [14] The light-emitting display device according to any one of claims 7 to 13, wherein gates of first viewing angle control transistors (Tvc1) and second viewing angle control transistors (Tvc2) in an s-th light-emitting region among the light-emitting regions (EA1, ..., EA12) are connected to an s-th viewing angle control line configured to receive an s-th viewing angle control signal, where s is a natural number smaller than the number of the light-emitting regions (EA1, ..., EA12), and wherein gates of first viewing angle control transistors (Tvc1) and second viewing angle control transistors (Tvc2) in an s+1-th light-emitting region among the light-emitting regions (EA1, ..., EA12) are connected to an s+1-th viewing angle control line configured to receive an s+1-th To receive viewing angle control signal. [15] The light-emitting display device according to claim 14, wherein the s-th viewing angle control line and the s+1-th viewing angle control line are connected to a control driver (400) configured to generate the s-th viewing angle control signal and the s+1-th viewing angle control signal. [16] A display device comprising: a display panel (100) divided into a plurality of light-emitting regions (EA1, ..., EA12), each of the plurality of light-emitting regions (EA1, ..., EA12) having a plurality of subpixels of a first type, each having a first light-emitting element (ED1) configured to emit colored light with a wide viewing angle, and a plurality of subpixels of a second type, each having a second light-emitting element (ED2) configured to emit colored light with a narrow viewing angle that is smaller than the wide viewing angle; and a control device (400) configured to: activating the plurality of subpixels of the second type within at least one of the plurality of light-emitting areas (EA1, ..., EA12) to display first content with the narrow viewing angle, while the plurality of subpixels of the first type within the at least one of the plurality of light-emitting areas (EA1, ..., EA12) remain switched off, and Activating the plurality of subpixels of the first type within remaining light-emitting regions of the plurality of light-emitting regions (EA1, ..., EA12) to display second content with the wide viewing angle, while the plurality of subpixels of the second type within the remaining light-emitting regions remain turned off. [17] The display device according to claim 16, further comprising: a plurality of semi-cylindrical lenses (LZ1) arranged in an associated manner on the plurality of subpixels of the first type in each of the plurality of light-emitting areas (EA1, ..., EA12); and a plurality of hemispherical lenses (LZ2) arranged in an associated manner on the plurality of subpixels of the second type in each of the plurality of light-emitting areas (EA1, ..., EA12). [18] The display device according to claim 16 or 17, further comprising: a first viewing angle control transistor (Tvc1) connected to the first light-emitting element (ED1); and a second viewing angle control transistor (Tvc2) connected to the second light-emitting element (ED2), wherein a gate of the first viewing angle control transistor (Tvc1) and a gate of the second viewing angle control transistor (Tvc2) are both connected to the same viewing angle control line. [19] The display device according to any one of claims 16 to 18, wherein the control device (400) is further configured to: selectively controlling the plurality of light-emitting areas (EA1, ..., EA12) to operate in a split mode corresponding to the wide viewing angle or a private mode corresponding to the narrow viewing angle on a light-emitting area-by-light-emitting area basis. [20] The display device according to claim 19, wherein the plurality of light-emitting regions (EA1, ... EA12) are arranged in a grid having at least two rows and at least two columns. [21] The display device according to claim 19 or 20, wherein the control device (400) is further configured to: Switching, in response to a user input, one of the plurality of light-emitting areas (EA1, ..., EA12) from displaying content in the wide-viewing angle sharing mode to displaying content in the narrow-viewing angle privacy mode.

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