OLED display system and control method thereof

Abstract

An organic light emitting element (OLED) display system and a control method thereof are provided. In more detail, a system arranged in a moving object includes: an OLED display including a first organic light emitting layer and a second organic light emitting layer; and a control unit that controls ON / OFF of at least one of the first organic light emitting layer and the second organic light emitting layer, the second organic light emitting layer having a larger beam angle than the first organic light emitting layer, and the second organic light emitting layer having a larger beam angle than the first organic light emitting layer. And the control unit controls on / off of at least one of the first organic light emitting layer and the second organic light emitting layer based on a speed of the moving object.

Description

Technical Field

[0001] The present disclosure relates to an organic light emitting element (OLED) display system and a control method thereof. Background Art

[0002] The display system of the vehicle can be mainly installed on the dashboard, central console, entertainment system, etc. of the vehicle, and visually transmit information to the driver and passengers in the vehicle. For example, the driving information display system can provide driving related information such as the speed, revolutions per minute (RPM), fuel level, mileage, etc. of the vehicle. The display can be mainly installed on the dashboard, can be configured as a digital display panel, or can be set as a combined analog and digital display. In recent years, electronic dashboards have been used more and more, and virtual or customized display shapes can be selected in some cases. In addition, the display system on the central console can be mainly connected to the vehicle's infotainment system. The display can provide a navigation system, multimedia playback, communication functions, etc. Many vehicles can use a touch screen interface to allow users to easily access and control functions. In addition, in some vehicles, voice recognition functions can allow drivers to perform tasks, such as entering a destination or connecting a mobile phone. In addition, with the beginning of the era of electric vehicles and autonomous driving, display systems can have larger and larger sizes and higher resolutions, and continue to evolve to provide more convenient and useful information to drivers and passengers.

[0003] In addition to the above functions, the co-pilot display, which is also a display, can allow passengers other than the driver to check and interact with information. The display can be mainly installed on the center console or in front of the co-pilot seat, and can provide various functions such as entertainment, navigation, communication, etc., which have recently attracted much attention in the market.

[0004] At the same time, as displays become larger and more diverse, the displays within the driver's field of view may also become wider and more numerous. In addition, since image noise may appear in the front passenger seat display image, the front passenger seat display image may interfere with the driver's driving while driving. Therefore, it may be important to reduce the frequency of image noise that appears in the driver's field of view during driving. Recently, there has been an increasing demand from major original equipment (OE) for displays with viewing angle control technology, which may limit the viewing of multimedia images to the driver's direction of the front passenger display. In addition, in addition to the driver's seat direction, side window reflections may also be limited because such reflections may interfere with vehicle driving.

[0005] [Related technical literature]

[0006] [Patent Document]

[0007] U.S. Patent Publication No. 2023-0150439 (“ELECTRONIC DEVICE AND VEHICLE”, published on May 18, 2023) Summary of the invention

[0008] Embodiments of the present disclosure are intended to provide an organic light emitting element (OLED) display system and a control method thereof that may not interfere with a driver's field of vision.

[0009] In a general aspect, an organic light emitting element (OLED) display system disposed in a moving object is provided, the system comprising: an OLED display comprising a first organic light emitting layer and a second organic light emitting layer; and a control unit controlling on / off of at least one of the first organic light emitting layer and the second organic light emitting layer, wherein the second organic light emitting layer has a larger beam angle than the first organic light emitting layer, and the control unit controls on / off of at least one of the first organic light emitting layer and the second organic light emitting layer based on a speed of the moving object.

[0010] The control unit controls the first organic light emitting layer and the second organic light emitting layer in a first control mode. In the first control mode, when the speed of the moving object is zero or keeps the same speed for a predetermined time, the first organic light emitting layer and the second organic light emitting layer are both turned on.

[0011] The control unit maintains the first control mode when the speed of the moving object increases to below a predetermined reference speed in the first control mode. When the speed of the moving object increases in the first control mode and remains greater than the reference speed within a predetermined time, the control unit controls the first organic light-emitting layer and the second organic light-emitting layer in the second control mode. In the second control mode, the first organic light-emitting layer is turned on and the second organic light-emitting layer is turned off.

[0012] The control unit increases the amount of current applied to the first organic light emitting layer when the first control mode is switched to the second control mode.

[0013] When the first control mode is switched to the second control mode, the control unit applies the pre-stored gamma and color coordinate values.

[0014] In another general aspect, a control method for an organic light emitting element (OLED) display system provided in a moving object including an OLED display and a control unit is provided, the method comprising: (a) receiving a speed of the moving object through the control unit; and (b) controlling on / off of at least one of a first organic light emitting layer and a second organic light emitting layer based on the speed of the moving object through the control unit.

[0015] In operation (b), when the speed of the moving object is zero or maintains the same speed for a predetermined time, the first organic light-emitting layer and the second organic light-emitting layer are controlled in a first control mode in which both the first organic light-emitting layer and the second organic light-emitting layer are turned on.

[0016] In operation (b), when the speed of the moving object increases to below a predetermined reference speed in the first control mode, the first control mode is maintained, and when the speed of the moving object increases in the first control mode and remains greater than the reference speed for a predetermined time, the first organic light-emitting layer and the second organic light-emitting layer are controlled in the second control mode, and in the second control mode, the first organic light-emitting layer is turned on and the second organic light-emitting layer is turned off.

[0017] In operation (b), when the first control mode is switched to the second control mode, the amount of current applied to the first organic light emitting layer increases.

[0018] In operation (b), when the first control mode is switched to the second control mode, pre-stored gamma and color coordinate values ​​are applied. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram showing the structure of a conventional organic light emitting element (OLED) panel.

[0020] Figure 2 is a schematic diagram showing an OLED display system according to an embodiment of the present disclosure.

[0021] Figure 3A and Figure 3B are schematic diagrams each showing a structure of an OLED according to an embodiment of the present disclosure.

[0022] Figure 4 is a flowchart illustrating a control method of an OLED display system according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0023] In order to describe the present disclosure, operating advantages of the present disclosure, and objectives achieved by embodiments of the present disclosure, embodiments of the present disclosure are exemplified and described hereinafter with reference to the accompanying drawings.

[0024] First, the terms used in the present disclosure are only used to describe specific embodiments, not to limit the present disclosure, and unless otherwise clearly indicated in the context, singular terms may include their plural forms. It should be understood that the terms "including", "formed by...", etc. used in the present disclosure specify the presence of features, numbers, steps, operations, components, parts, or combinations thereof mentioned in the specification, and do not exclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0025] When it is determined that a detailed description of known configurations or functions related to the present disclosure may obscure the gist of the present disclosure, the detailed description thereof will be omitted.

[0026] Figure 1 is a schematic diagram showing the structure of a conventional organic light emitting element (OLED) panel.

[0027] like Figure 1 As shown, the structure of a conventional OLED panel may include a single organic light emitting layer 11 .

[0028] In this case, a conventional OLED panel including a single organic light emitting layer may need to be always controlled in a sharing mode.

[0029] That is, the driver and the passenger in the front passenger seat have no choice but to share one image together.

[0030] Figure 2 is a schematic diagram showing an OLED display system according to an embodiment of the present disclosure; and Figure 3A and Figure 3B are schematic diagrams each showing a structure of an OLED according to an embodiment of the present disclosure.

[0031] like Figure 2 As shown, an OLED display system 1000 arranged in a mobile object according to the present disclosure may include an OLED display 100 and a control unit 200. The control unit 200 (or controller) may be implemented with a circuit, or alternatively, by a processor together with a non-transitory computer-readable storage medium storing commands, which, when executed by the processor, causes the processor to perform various operations described with reference to the control unit 200.

[0032] The OLED display 100 may include an anode A and a cathode C, and include first and second organic light emitting layers 110 and 120 disposed between the anode A and the cathode C. Here, the organic light emitting layer may refer to a layer including a light emitting material that emits light in response to current applied thereto.

[0033] In addition, the second organic light emitting layer 120 may be stacked on the first organic light emitting layer 110 and may be connected to each other in parallel.

[0034] The control unit 200 may determine a control mode based on the received speed of the moving object, and control on / off of each of the first organic light emitting layer 110 and the second organic light emitting layer 120 based on the determined control mode.

[0035] In detail, based on the speed of the moving object received from the speed sensor of the moving object, the control unit 200 may perform control in a first control mode in which both the first organic light emitting layer 110 and the second organic light emitting layer 120 are turned on.

[0036] In the first control mode, since both the first organic light emitting layer 110 and the second organic light emitting layer 120 are turned on, the driver and the passenger may share an image.

[0037] Furthermore, based on the received speed of the moving object, the control unit 200 may perform control in a second control mode in which the first organic light emitting layer 110 is turned on and the second organic light emitting layer is turned off.

[0038] In the second control mode, only the first organic light emitting layer 110 may be turned on. Therefore, light emitted from the first organic light emitting layer 110 may provide an image having a viewing angle limited by the second organic light emitting layer 120.

[0039] In more detail, Figure 3A and Figure 3B As shown, the OLED display 100 according to the present disclosure may include a first substrate (not shown), which is a substrate on which a plurality of pixels are arranged. A plurality of pixels may be gathered to produce white light, and, for example, red, green, and blue pixels may be gathered to form a group. In addition, the OLED display 100 may include a second substrate (not shown) arranged on its surface facing the first substrate, and the second substrate (not shown) may include a plurality of color layers corresponding to the plurality of pixels, and may include a black matrix for distinguishing the pixels from each other. Interference between colors can be prevented and the colors can be distinguished from each other by using the black matrix of the second substrate.

[0040] Therefore, when the control unit 200 turns on only the first organic light emitting layer 110 in the second control mode, an image having a viewing angle limited by the black matrix of the second organic light emitting layer 120 may be provided.

[0041] In detail, Figure 3A A first control mode is shown, and Figure 3B Here, when it is assumed that the beam angle of the first organic light emitting layer 110 is θ1 and the beam angle of the second organic light emitting layer 120 is θ2, an image having a viewing angle limited by the black matrix of the second organic light emitting layer 120 can be provided because θ1 is greater than θ2.

[0042] Meanwhile, the control unit 200 may control the first organic light emitting layer 110 and the second organic light emitting layer 120 in the first control mode or the second control mode based on the speed of the moving object.

[0043] In detail, when the received speed of the moving object is zero or is maintained at the same speed for a predetermined time, the control unit 200 may perform control in the first control mode.

[0044] In addition, when the speed of the moving object increases to below a predetermined reference speed in the first control mode, the control unit 200 may control the control mode to remain in the first control mode. On the other hand, when the speed of the moving object increases in the first control mode and remains greater than the reference speed for a predetermined time, the control unit 200 may control the control mode to switch to the second control mode.

[0045] Here, when the mode is changed by the control unit 200, especially when the first control mode is changed to the second control mode, the system 1000 may have lower brightness and changed color coordinates. Therefore, the control unit 200 may increase the current applied to the first organic light emitting layer 110 to generate brighter brightness. In addition, the control unit 200 may compensate for the change in color coordinates by applying pre-stored gamma and color coordinate values.

[0046] Therefore, when the moving object stops or the speed does not change within a predetermined time, the first organic light emitting layer 110 and the second organic light emitting layer 120 may operate in the first control mode. Therefore, the driver and the passenger may share an image together, thus ensuring driving safety.

[0047] Furthermore, when the speed of the moving object increases above a predetermined reference speed, the first organic light emitting layer 110 and the second organic light emitting layer 120 may be operated in the second control mode, thereby preventing any disturbance to the driver while driving.

[0048] Figure 4 is a flowchart illustrating a control method of an OLED display system according to an embodiment of the present disclosure.

[0049] In a control method of an OLED display system including an OLED display 100 and a control unit 200 arranged in a moving object according to the present disclosure, the control unit 200 may receive a speed of the moving object in operation S100, determine a control mode based on the received speed of the moving object, and control on / off of each of the first organic light-emitting layer 110 and the second organic light-emitting layer 120 based on the determined control mode in operation S200.

[0050] In detail, based on the speed of the moving object received in operation S200 , the control unit 200 may perform control in a first control mode in which both the first organic light emitting layer 110 and the second organic light emitting layer 120 are turned on.

[0051] In the first control mode, since both the first organic light emitting layer 110 and the second organic light emitting layer 120 are turned on, the driver and the passenger may share an image together.

[0052] Furthermore, based on the received speed of the moving object, the control unit 200 may perform control in a second control mode in which the first organic light emitting layer 110 is turned on and the second organic light emitting layer is turned off.

[0053] In the second control mode, only the first organic light emitting layer 110 may be turned on. Therefore, light emitted from the first organic light emitting layer 110 may provide an image having a viewing angle limited by the second organic light emitting layer 120.

[0054] In detail, when the received speed of the moving object is zero or is maintained at the same speed for a predetermined time, the control unit 200 may perform control in the first control mode.

[0055] In addition, when the speed of the moving object in the first control mode increases and falls below a predetermined reference speed, the control unit 200 may control the control mode to remain in the first control mode. On the other hand, when the speed of the moving object in the first control mode increases and remains greater than the reference speed for a predetermined time, the control unit 200 may control the control mode to switch to the second control mode.

[0056] Here, when the mode is changed by the control unit 200, especially when the first control mode is changed to the second control mode, the system 1000 may have lower brightness and changed color coordinates. Therefore, the control unit 200 may increase the current applied to the first organic light emitting layer 110 to generate brighter brightness. In addition, the control unit 200 may compensate for the change in color coordinates by applying pre-stored gamma and color coordinate values.

[0057] As described above, the OLED display system and the control method thereof according to various embodiments of the present disclosure as described above can change the mode so as not to interfere with the driver's field of vision, thereby improving the safety of the driver, passengers or pedestrians.

[0058] Furthermore, the present disclosure may satisfy various user conditions by allowing the driver to quantitatively control the display exposure amount.

[0059] Furthermore, the present disclosure can use such a physically simple structure, thereby ensuring higher reliability.

[0060] Although the embodiments of the present disclosure are described above, the embodiments disclosed in the present disclosure are not intended to limit the spirit of the present disclosure but are provided to fully describe the present disclosure. Therefore, the spirit of the present disclosure may include not only each disclosed embodiment but also a combination of the disclosed embodiments. In addition, the scope of the present disclosure is not limited to these embodiments. In addition, it is obvious to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the appended claims, and all such appropriate changes and modifications should be deemed to fall within the scope of the present disclosure as equivalents.

Claims

1. An organic light emitting element (OLED) display system arranged in an object, the system comprising: An OLED display comprising a first organic light-emitting layer and a second organic light-emitting layer; as well as a controller that controls on / off of at least one of the first organic light-emitting layer and the second organic light-emitting layer based on the speed of the object, Wherein, a beam angle of the second organic light-emitting layer is greater than a beam angle of the first organic light-emitting layer.

2. The system according to claim 1, wherein: When the speed of the object is zero or keeps the same speed for a predetermined time, the controller controls the first organic light-emitting layer and the second organic light-emitting layer in a first control mode, in which the first organic light-emitting layer and the second organic light-emitting layer are both turned on.

3. The system according to claim 2, wherein: When the speed of the object increases below a predetermined reference speed in the first control mode, the controller maintains the first control mode.

4. The system according to claim 3, wherein: When the speed of the object increases in the first control mode and remains greater than the reference speed for a predetermined time, the controller controls the first organic light-emitting layer and the second organic light-emitting layer in a second control mode, in which the first organic light-emitting layer is turned on and the second organic light-emitting layer is turned off.

5. The system according to claim 4, wherein: When the first control mode is switched to the second control mode, the controller increases the amount of current applied to the first organic light emitting layer.

6. The system according to claim 4, wherein: When the first control mode is switched to the second control mode, the controller applies pre-stored gamma and color coordinate values.

7. A control method of an organic light emitting element (OLED) display system arranged in an object, the OLED display system comprising an OLED display and a controller, the method comprising the following operations: (a) receiving, by the controller, a velocity of the object; and (b) controlling, by the controller, on / off of at least one of the first organic light emitting layer and the second organic light emitting layer of the OLED display based on the speed of the object.

8. The method according to claim 7, wherein: In operation (b), when the speed of the object is zero or maintains the same speed for a predetermined time, the first organic light-emitting layer and the second organic light-emitting layer are controlled in a first control mode, in which the first organic light-emitting layer and the second organic light-emitting layer are both turned on.

9. The method according to claim 8, wherein: In operation (b), When the speed of the object increases below a predetermined reference speed in the first control mode, the first control mode is maintained.

10. The method according to claim 9, wherein: In operation (b), when the speed of the object increases in the first control mode and remains greater than the reference speed for a predetermined time, the first organic light-emitting layer and the second organic light-emitting layer are controlled in a second control mode, in which the first organic light-emitting layer is turned on and the second organic light-emitting layer is turned off.

11. The method according to claim 10, wherein: In operation (b), when the first control mode is switched to the second control mode, the amount of current applied to the first organic light emitting layer increases.

12. The method according to claim 10, wherein: In operation (b), when the first control mode is switched to the second control mode, pre-stored gamma and color coordinate values ​​are applied.

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