Display device for vehicle

Abstract

A display apparatus for a vehicle is disclosed. A display apparatus for a vehicle according to an embodiment of the present disclosure includes: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to output, based on at least one tell-tale image stored in a memory, the at least one tell-tale image to the OLED panel. Accordingly, it is possible to stably display the tell-tale image.

Description

BACKGROUND 1. Field

[0001] The present disclosure relates to a display apparatus for a vehicle, and more particularly, to a display apparatus for a vehicle capable of stably displaying a vehicle warning (tell-tale) image.2. Description of the Related Art

[0002] A vehicle is a machine that allows a user who rides therein to move in a desired direction. A representative example of the vehicle is a car.

[0003] Meanwhile, for convenience of vehicle users, some vehicles are equipped with a display apparatus or device.

[0004] For example, a display is positioned on an instrument cluster to present various types of information. In addition to the cluster display, in order to display vehicle driving information and the like, various displays, such as an AVN (Audio Video Navigation) display and a head-up display that outputs a projection image onto a windshield, are increasingly being mounted in vehicles.

[0005] Conventionally, vehicle warning images (i.e., tell-tales) have been presented using a lamp-based method. However, it is becoming common to display vehicle warning images using in-vehicle displays.

[0006] To display such vehicle warning images, a signal processing device in the vehicle outputs a video signal including the vehicle warning images. However, when the signal processing device malfunctions or fails, the vehicle warning images cannot be displayed.SUMMARY

[0007] It is an object of the present disclosure to provide a display apparatus for a vehicle capable of stably displaying a vehicle warning (tell-tale) image.

[0008] It is another object of the present disclosure to provide a display apparatus for a vehicle capable of preventing degradation of a vehicle warning (tell-tale) image.

[0009] In accordance with an aspect of the present disclosure, the above and other objects can be accomplished by providing a display apparatus for a vehicle including: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to output, based on at least one tell-tale image stored in a memory, the at least one tell-tale image to the OLED panel.

[0010] The driving controller can be configured to: receive a plurality of tell-tale images from a signal processing device; and output the plurality of tell-tale images to the OLED panel separately from the at least one tell-tale image.

[0011] The driving controller can be configured to perform degradation compensation on the at least one tell-tale image.

[0012] In response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, the driving controller can be configured to: check degradation of the alpha blending area based on a mask layer corresponding to the alpha blending area; and perform determination compensation based on a result of the degradation check.

[0013] In response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, the driving controller can be configured to perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area.

[0014] In response to alpha blending values for the respective colors of the alpha blending area being different, the driving controller can be configured to differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area.

[0015] Upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to perform pixel shifting, first axis line shifting, or second axis line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image.

[0016] The driving controller can include a current detector configured to detect a current flows through the OLED panel. The driving controller can be configured to: determine degradation of the at least one tell-tale image based on the current detected by the current detector; and upon determination of degradation of the at least one tell-tale image, perform pixel shifting, first axis line shifting, or second axis line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image.

[0017] Upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to: perform degradation determination based on a shape of the at least one tell-tale image; and perform degradation compensation corresponding to the shape of the at least one tell-tale image.

[0018] Upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to: perform degradation determination based on a pixel of the at least one tell-tale image; and perform degradation compensation on the pixel of the at least one tell-tale image.

[0019] The driving controller can be configured to: detect a check bit added to the at least one tell-tale image; perform degradation determination on the at least one tell-tale image based on the check bit; and perform degradation compensation on a pixel of the at least one tell-tale image based on a result of the degradation determination.

[0020] The display apparatus can further include a signal processing device configured to output a video signal. In response to output of the video signal from the signal processing device being interrupted, the driving controller can be configured to output the at least one tell-tale image and a predetermined image stored in the memory to the OLED panel.

[0021] The signal processing device can be configured to output a video signal including a plurality of tell-tale images. In response to output of the video signal from the signal processing device being interrupted, the driving controller can be configured to output the at least one tell-tale image without outputting the plurality of tell-tale images.

[0022] A safety level of the at least one tell-tale image can be greater than a safety level of the plurality of tell-tale images.

[0023] In accordance with another aspect of the present disclosure, there is provided a display apparatus for a vehicle including: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to: output at least one tell-tale image to the OLED panel; and perform degradation compensation on the at least one tell-tale image to perform pixel shifting or line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image.

[0024] The driving controller can be configured to: receive a plurality of tell-tale images from a signal processing device; and output the plurality of tell-tale images to the OLED panel separately from the at least one tell-tale image.

[0025] The driving controller can be configured to perform degradation compensation on the plurality of tell-tale images to perform pixel shifting or line shifting on the plurality of tell-tale images or change luminance of the plurality of tell-tale images.

[0026] In accordance with yet another aspect of the present disclosure, there is provided a display apparatus for a vehicle including: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to OLED panel, wherein the driving controller is configured to: output at least one tell-tale image to the OLED panel; and in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area.

[0027] In response to alpha blending values for the respective colors of the alpha blending area being different, the driving controller can be configured to differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area.EFFECTS OF THE DISCLOSURE

[0028] A display apparatus for a vehicle according to an embodiment of the present disclosure includes: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to output, based on at least one tell-tale image stored in a memory, the at least one tell-tale image to the OLED panel. Thus, it is possible to stably display the tell-tale image. In particular, as the tell-tale image can be output independently of a signal processing device, it is possible to stably display the tell-tale image.

[0029] Meanwhile, the driving controller can be configured to: receive a plurality of tell-tale images from a signal processing device; and output the plurality of tell-tale images to the OLED panel separately from the at least one tell-tale image. Thus, it is possible to stably display the tell-tale images.

[0030] Meanwhile, the driving controller can be configured to perform degradation compensation on the at least one tell-tale image. Thus, it is possible to prevent degradation of the tell-tale image.

[0031] Meanwhile, in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, the driving controller can be configured to: check degradation of the alpha blending area based on a mask layer corresponding to the alpha blending area; and perform determination compensation based on a result of the degradation check. Thus, it is possible to prevent degradation of the tell-tale image.

[0032] Meanwhile, in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, the driving controller can be configured to perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area. Thus, it is possible to prevent degradation of the tell-tale image.

[0033] Meanwhile, in response to alpha blending values for the respective colors of the alpha blending area being different, the driving controller can be configured to differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area. Thus, it is possible to prevent degradation of the tell-tale image.

[0034] Meanwhile, upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to perform pixel shifting, first axis line shifting, or second axis line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image. Thus, it is possible to prevent degradation of the tell-tale image.

[0035] Meanwhile, the driving controller can include a current detector configured to detect a current flows through the OLED panel. The driving controller can be configured to: determine degradation of the at least one tell-tale image based on the current detected by the current detector; and upon determination of degradation of the at least one tell-tale image, perform pixel shifting, first axis line shifting, or second axis line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image. Thus, it is possible to prevent degradation of the tell-tale image.

[0036] Meanwhile, upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to: perform degradation determination based on a shape of the at least one tell-tale image; and perform degradation compensation corresponding to the shape of the at least one tell-tale image. Thus, it is possible to prevent degradation of the tell-tale image.

[0037] Meanwhile, upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to: perform degradation determination based on a pixel of the at least one tell-tale image; and perform degradation compensation on the pixel of the at least one tell-tale image. Thus, it is possible to prevent degradation of the tell-tale image.

[0038] Meanwhile, the driving controller can be configured to: detect a check bit added to the at least one tell-tale image; perform degradation determination on the at least one tell-tale image based on the check bit; and perform degradation compensation on a pixel of the at least one tell-tale image based on a result of the degradation determination. Thus, it is possible to prevent degradation of the tell-tale image.

[0039] Meanwhile, the display apparatus for a vehicle can further include a signal processing device configured to output a video signal. In response to output of the video signal from the signal processing device being interrupted, the driving controller can be configured to output the at least one tell-tale image and a predetermined image stored in the memory to the OLED panel. Thus, it is possible to stably display at least one tell-tale image.

[0040] Meanwhile, the signal processing device can be configured to output a video signal including a plurality of tell-tale images. In response to output of the video signal from the signal processing device being interrupted, the driving controller can be configured to output the at least one tell-tale image without outputting the plurality of tell-tale images. Thus, it is possible to stably display the tell-tale image.

[0041] Meanwhile, a safety level of the at least one tell-tale image can be greater than a safety level of the plurality of tell-tale images. Thus, it is possible to stably display the at least one tell-tale image.

[0042] A display apparatus for a vehicle according to another embodiment of the present disclosure includes: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to: output at least one tell-tale image to the OLED panel; and perform degradation compensation on the at least one tell-tale image to perform pixel shifting or line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image. Thus, it is possible to stably display the at least one tell-tale image while preventing degradation of the tell-tale image.

[0043] Meanwhile, the driving controller can be configured to: receive a plurality of tell-tale images from a signal processing device; and output the plurality of tell-tale images to the OLED panel separately from the at least one tell-tale image. Thus, it is possible to display the plurality of tell-tale images.

[0044] Meanwhile, the driving controller can be configured to perform degradation compensation on the plurality of tell-tale images to perform pixel shifting or line shifting on the plurality of tell-tale images or change luminance of the plurality of tell-tale images. Thus, it is possible to prevent degradation of the tell-tale image.

[0045] A display apparatus for a vehicle according to yet another embodiment of the present disclosure includes: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to OLED panel, wherein the driving controller is configured to: output at least one tell-tale image to the OLED panel; and in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area. Thus, it is possible to stably display the at least one tell-tale image while preventing degradation of the tell-tale image.

[0046] Meanwhile, in response to alpha blending values for the respective colors of the alpha blending area being different, the driving controller can be configured to differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area. Thus, it is possible to prevent degradation of the tell-tale image.BRIEF DESCRIPTION OF THE DRAWINGS

[0047] FIG. 1 illustrates an example of the exterior and interior of a vehicle. FIG. 2 illustrates an outer appearance of a display apparatus for a vehicle according to an embodiment of the present disclosure. FIG. 3 illustrates an example of an internal block diagram of the display apparatus for a vehicle of FIG. 2. FIG. 4 is an internal block diagram of a first display or a second display of FIG. 2. FIGS. 5A to 5D are diagrams referred to in the description of an organic light emitting diode (OLED) panel of FIG. 4. FIG. 6 illustrates an example of an internal block diagram of a display apparatus for a vehicle related to the present disclosure. FIG. 7 illustrates an example of an internal block diagram of a display apparatus for a vehicle according to an embodiment of the present disclosure. FIG. 8A illustrates an example of an internal block diagram of a display apparatus for a vehicle according to another embodiment of the present disclosure. FIGS. 8B to 12B are diagrams referred to in the description of FIGS. 7 and 8A. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0048] Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings.

[0049] With respect to constituent elements used in the following description, suffixes "module" and "unit" are given only in consideration of ease in preparation of the specification, and do not have or serve different meanings. Accordingly, the suffixes "module" and "unit" can be used interchangeably.

[0050] FIG. 1 illustrates an example of the exterior and interior of a vehicle.

[0051] Referring to FIG.1, a vehicle 200 can include a plurality of wheels 103FR, 103FL, 103RL, ... rotated by a power source and a steering wheel 150 for adjusting a traveling direction of the vehicle 200.

[0052] The vehicle 200 can further include a camera 195 for acquiring an image of the front of the vehicle.

[0053] The vehicle 200 can further include therein a plurality of displays 180a, 180b, and 180h for displaying images, information, and the like.

[0054] For example, among the plurality of displays 180a, 180b, and 180h, a first display 180a can be a cluster display, a second display 180b can be an audio video navigation (AVN) display, and a third display 180h can be a head-up display (HUD) that projects an image onto a predetermined area Ara of a windshield WS.

[0055] Meanwhile, a display apparatus 100 for a vehicle of the present disclosure (see FIG. 7) is configured such that, among a plurality of displays 180a, 180b, and 180h, the first display 180a or the second display 180b includes an organic light emitting diode (OLED) panel and displays a vehicle warning image on the OLED panel.

[0056] In particular, the display apparatus 100 for a vehicle of the present disclosure (see FIG. 7) includes an organic light emitting diode (OLED) panel 210 and a driving controller 285 that outputs a driving signal to the OLED panel 210. The driving controller 285 outputs at least one vehicle warning image to the OLED panel 210 based on at least one vehicle warning image stored in a memory 240. Accordingly, it is possible to stably display the vehicle warning image. In particular, the vehicle warning image can be output independently of a signal processing device 170 (see FIG. 7), thereby ensuring a stable display of the vehicle warning image.

[0057] Meanwhile, the vehicle 200 described herein can be a concept including all of an internal combustion engine vehicle having an engine as a power source, a hybrid vehicle having an engine and an electric motor as power sources, and an electric vehicle having an electric motor as a power source.

[0058] FIG. 2 illustrates an outer appearance of a display apparatus for a vehicle according to an embodiment of the present disclosure.

[0059] The display apparatus 100 for a vehicle (or simply "vehicle display apparatus") according to an embodiment of the present disclosure can include a signal processing device 170 configured to perform signal processing to display an image, information, and the like on at least one of a plurality of displays 180a, 180b, and 180h.

[0060] Among the plurality of displays 180a, 180b, and 180h, the first display 180a can be a cluster display 180a for displaying a driving state and operation information, the second display 180b can be an AVN (Audio Video Navigation) display for displaying vehicle driving information, a navigation map, various types of entertainment information, or an image, and the third display 180h can be a HUD display 180h for displaying vehicle driving information.

[0061] The signal processing device 170 can be provided therein with a memory 508 and a processor 175 to control at least one of the plurality of displays 180a, 180b, and 180h.

[0062] Meanwhile, the signal processing device 170 can execute first to third virtual machines (not shown) on a hypervisor 505 in the processor 175.

[0063] The first virtual machine (not shown), which is a server virtual machine, can control the second virtual machine (not shown) and the third virtual machine (not shown), which are guest virtual machines.

[0064] Meanwhile, the second virtual machine can be referred to as a first guest virtual machine, and the third virtual machine can be referred to as a second guest virtual machine.

[0065] The first guest virtual machine (not shown) can be operated for the first display 180a, and the second guest virtual machine (not shown) can be operated for the second display 180b or the third display 180h.

[0066] Meanwhile, the server virtualization machine (not shown) in the processor 175 can be configured to set the memory 508 based on the hypervisor 505 for transmission of the same data to the first guest virtualization machine (not shown) and the second guest virtualization machine (not shown). Accordingly, the first display 180a and the second display 180b in the vehicle can display the same information or the same image in a synchronized manner.

[0067] Meanwhile, the server virtualization machine (not shown) in the processor 175 can receive and process wheel speed sensor data of the vehicle, and can transmit the processed wheel speed sensor data to at least one of the first guest virtualization machine (not shown) and the second guest virtualization machine (not shown). Accordingly, at least one virtual machine can share the wheel speed sensor data of the vehicle.

[0068] Thus, based on the single signal processing device 170, it is possible to control the plurality of displays 180a, 180b, and 180h.

[0069] Meanwhile, some of the plurality of displays 180a, 180b, and 180h can operate under a Linux-based operating system (OS), and others can operate under a Web-based operating system (OS).

[0070] In some embodiments, the signal processing device 170 can control the plurality of displays 180a, 180b, and 180h operating under different operating systems (OS) to display the same information or the same image in a synchronized manner.

[0071] FIG. 3 illustrates an example of an internal block diagram of a display apparatus for a vehicle according to an embodiment of the present disclosure.

[0072] Referring to FIG. 3, the vehicle display apparatus 100 according to an embodiment of the present disclosure can include an input device 110, a transceiver 120, an interface 130, a memory 140, a signal processing device 170, a plurality of displays 180a, 180b, and 180h, an audio output device 185, and a power supply 190.

[0073] The input device 110 can include a physical button, a pad, and the like for button input, touch input, and the like.

[0074] Meanwhile, the input device 110 can include a microphone (not shown) for user voice input.

[0075] The transceiver 120 can wirelessly exchange data with a mobile terminal 800 or a server (not shown).

[0076] In particular, the transceiver 120 can wirelessly exchange data with a mobile terminal of a vehicle driver. Any of various data communication schemes, such as Bluetooth, Wi-Fi, Wi-Fi Direct, and APIX, can be used as a wireless data communication scheme.

[0077] The transceiver 120 can receive weather information and road traffic condition information, e.g., transport protocol expert group (TPEG) information, from the mobile terminal 800 or the server (not shown). To this end, the transceiver 120 can include a mobile communication module (not shown).

[0078] The interface 130 can receive sensor information from an electronic control unit (ECU) 770 or a sensor device 760, and can transmit the received information to the signal processing device 170.

[0079] Here, the sensor information can include at least one of vehicle heading information, vehicle location information (global positioning system (GPS) information), vehicle angle information, vehicle speed information, vehicle acceleration information, vehicle tilt information, vehicle forward / backward movement information, battery information, fuel information, tire information, vehicle lamp information, in-vehicle temperature information, and in-vehicle humidity information.

[0080] The sensor information can be acquired from a heading sensor, a yaw sensor, a gyro sensor, a position module, a vehicle forward / backward movement sensor, a wheel sensor, a vehicle speed sensor, a vehicle body tilt sensor, a battery sensor, a fuel sensor, a tire sensor, a steering wheel rotation sensor, an in-vehicle temperature sensor, an in-vehicle humidity sensor, etc. The position module can include a GPS module for receiving GPS information.

[0081] Meanwhile, the interface 130 can receive front-of-vehicle image data, side-of-vehicle image data, rear-of-vehicle image data, and obstacle-around-vehicle distance information from a camera 195, a LiDAR (not shown), or the like, and can transmit the received information to the signal processing device 170.

[0082] The memory 140 can store various data necessary for the overall operation of the vehicle display apparatus 100, such as programs for processing or control of the signal processing device 170.

[0083] For example, the memory 140 can store data regarding a hypervisor, a server virtual machine (not shown), and a plurality of guest virtual machines to execute within the processor 175.

[0084] The audio output device 185 can convert an electrical signal from the signal processing device 170 into an audio signal and output the audio signal. To this end, the audio output device 185 can include a speaker and the like.

[0085] Under the control of the signal processing device 170, the power supply 190 can supply power required for the operation of each component. In particular, the power supply 190 can receive power from a battery in the vehicle.

[0086] The third display 180h, which is a HUD display, can include a picture generation device 300 (see FIG. 1) to project an image, and can output an augmented reality-based object under the control of the signal processing device 170.

[0087] For example, the HUD display 180h can output vehicle speed information, vehicle traveling direction information, a forward-vehicle object, a distance indicator showing a distance to a vehicle ahead, and the like.

[0088] In another example, the HUD display 180h can output an augmented reality lane carpet, an augmented reality route carpet, or an augmented reality dynamic carpet corresponding to a road image.

[0089] The signal processing device 170 can control the plurality of displays 180a, 180b, and 180h.

[0090] The signal processing device 170 can control the overall operation of each unit or device in the vehicle display apparatus 100.

[0091] For example, the signal processing device 170 can include a memory 508 and a processor 175 configured to perform signal processing for the vehicle displays 180a and 180b.

[0092] The processor 175 can execute the hypervisor (not shown), and can execute the server virtual machine (not shown) and the plurality of guest virtual machines (not shown) on the executed hypervisor.

[0093] Here, the first guest virtual machine (not shown) can be operated for the first display 180a, and the second guest virtual machine (not shown) can be operated for the second display 180b or the third display 180h.

[0094] Meanwhile, the signal processing device 170 can process various signals, such as an audio signal, a video (or image) signal, and a data signal. To this end, the signal processing device 170 can be implemented in the form of a system on chip (SOC).

[0095] FIG. 4 is an internal block diagram of a first display or a second display of FIG. 2.

[0096] Hereinafter, a description will be given based on the first display 180a.

[0097] Referring to FIG. 4, the display 180a based on an organic light emitting diode panel can include an organic light emitting diode (OLED) panel 210, a first interface 230, a second interface 231, a timing controller 232, a gate driver 234, a data driver 236, a memory 240, a power supply 290, a current detector 510, and the like.

[0098] The display 180 can receive a video signal Vd, a first DC power V1, and a second DC power V2, and can display a predetermined image based on the video signal Vd.

[0099] Meanwhile, the first interface 230 in the display 180 can receive the video signal Vd and the first DC power V1 from the signal processing device 170.

[0100] Here, the first DC power V1 can be used for the operation of the power supply 290 and the timing controller 232 in the display 180.

[0101] The second interface 231 can receive the second DC power V2 from an external power supply 190. Meanwhile, the second DC power V2 can be input to the data driver 236 in the display 180.

[0102] The timing controller 232 can output a data driving signal Sda and a gate driving signal Sga, based on the video signal Vd.

[0103] For example, when the first interface 230 converts the input video signal Vd and outputs a converted video signal va1, the timing controller 232 can output the data driving signal Sda and the gate driving signal Sga based on the converted video signal va1.

[0104] The timing controller 232 can further receive a control signal, a vertical synchronization signal Vsync, etc., in addition to the video signal Vd from the signal processing device 170.

[0105] In addition to the video signal Vd, based on the control signal, the vertical synchronization signal Vsync, etc., the timing controller 232 can output a gate driving signal Sga for the operation of the gate driver 234 and a data driving signal Sda for the operation of the data driver 236.

[0106] In this case, when the OLED panel 210 includes RGB subpixels, the data driving signal Sda can be a data driving signal for driving the RGB subpixels.

[0107] When the OLED panel 210 includes RGBW subpixels, the data driving signal Sda can be a data driving signal for driving the RGBW subpixels.

[0108] Meanwhile, the timing controller 232 can further output a control signal Cs to the gate driver 234.

[0109] The gate driver 234 and the data driver 236 supply a scan signal and a data signal to the OLED panel 210 through a gate line GL and a data line DL, respectively, according to the gate driving signal Sga and the data driving signal Sda from the timing controller 232. This allows the OLED panel 210 to display a predetermined image.

[0110] Meanwhile, the OLED panel 210 can include an organic light emitting layer. In order to display an image, a plurality of gate lines GL and data lines DL can be disposed in a matrix form in each pixel corresponding to the organic light emitting layer.

[0111] Meanwhile, as a scan signal is input to the gate line GL, the gate line GL can also be referred to as a scan line.

[0112] Meanwhile, the data driver 236 can output a data signal to the OLED panel 210 based on the second DC power V2 from the second interface 231.

[0113] The power supply 290 can supply various types of power to the gate driver 234, the data driver 236, the timing controller 232, and the like.

[0114] The current detector 510 can detect a current flowing through subpixels of the OLED panel 210. The detected current can be input to the processor 270 or the like, for a cumulative (or accumulated) current calculation.

[0115] Meanwhile, the timing controller 232, the gate driver 234, the data driver 236, and the memory 240 in the figure can be configured as a single integrated circuit (IC).

[0116] Therefore, the timing controller 232, the gate driver 234, the data driver 236, and the memory 240 can be collectively referred to as a driving controller 285.

[0117] Meanwhile, the driving controller 285 can include a buffer (not shown) to store frame data.

[0118] In particular, the timing controller 232 in the driving controller 285 can output a gate driving signal and a data driving signal based on the frame data stored in the buffer (not shown) or the memory 240.

[0119] The timing controller 232 or the driving controller 285 can perform various types of control in the display 180. For example, the driving controller 285 can control the gate driver 234, the data driver 236, the timing controller 232, and the like.

[0120] Meanwhile, the timing controller 232 or the driving controller 285 can receive current information flowing through subpixels of the OLED panel 210 from the current detector 510.

[0121] Then, based on the current information flowing through the subpixels of the OLED panel 210, the timing controller 232 or the driving controller 285 can calculate an accumulated current of each subpixel of the OLED panel 210. The calculated accumulated current can be stored in the memory 240.

[0122] Meanwhile, the driving controller 285 can determine burn-in when the accumulated current of each subpixel of the OLED panel 210 is equal to or greater than an allowable value.

[0123] For example, when the accumulated current of each subpixel of the OLED panel 210 is equal to or greater than 300000 A, the timing controller 232 or the driving controller 285 can determine that a corresponding subpixel is a burn-in subpixel.

[0124] Meanwhile, when the accumulated current of a subpixel, among the subpixels of the OLED panel 210, is close to an allowable value, the timing controller 232 or the driving controller 285 can determine the corresponding subpixel as a burn-in predicted subpixel.

[0125] Meanwhile, based on the current detected by the current detector 510, the timing controller 232 or the driving controller 285 can determine a subpixel having the greatest accumulated current as a burn-in predicted subpixel.

[0126] Meanwhile, irrespective of the operation of the current detector 510, the timing controller 232 or the driving controller 285 can predict current information to flow through subpixels based on the video signal from the signal processing device 170, and can determine a burn-in predicted subpixel based on the predicted current information.

[0127] FIGS. 5A to 5D are diagrams referred to in the description of the OLED panel of FIG. 4.

[0128] FIG. 5A illustrates an example of a pixel in the OLED panel 210.

[0129] Referring to FIG. 5A, the OLED panel 210 can include a plurality of scan lines Scan 1 to Scan n and a plurality of data lines R1, G1, B1 to Rm, Gm, Bm intersecting the scan lines.

[0130] Meanwhile, a pixel (subpixel) is defined in an intersection area of the scan line and the data line in the OLED panel 210. In the figure, a pixel including RGB subpixels SR1, SG1, and SB1 is illustrated.

[0131] Meanwhile, the RGB subpixels SR1, SG1, and SB1 are respectively provided with a red organic light emitting diode, a green organic light emitting diode, and a blue organic light emitting diode.

[0132] FIG. 5B illustrates another example of a pixel in the OLED panel 210.

[0133] Referring to FIG. 5B, the OLED panel 210 can include a plurality of scan lines Scan 1 to Scan n and a plurality of data lines R1, G1, B1, W1 to Rm, Gm, Bm, Wm intersecting the scan lines.

[0134] Meanwhile, a pixel (subpixel) is defined in an intersection area of the scan line and data line in the OLED panel 210. In the figure, a pixel including RGBW subpixels SR1, SG1, SB1, and SW1 is illustrated.

[0135] The RGBW subpixels SR1, SG1, SB1, and SW1 are respectively provided with a red organic light emitting diode, a green organic light emitting diode, a blue organic light emitting diode, and a white organic light emitting diode.

[0136] FIG. 5C illustrates an example of a circuit of a subpixel in the pixel of the panel of FIG. 5A or FIG. 5B.

[0137] Referring to FIG. 5C, a subpixel circuit CRTm, which is an active type, can include a scan switching element SW1, a storage capacitor Cst, a driving switching element SW2, and an organic light emitting layer OLED.

[0138] The scan switching element SW1 is connected at its gate terminal to a scan line and is turned on according to a scan signal Vdscan input thereto. When turned on, the scan switching element SW1 transfers the input data signal Vdata to the gate terminal of the driving switching element SW2 or one end of the storage capacitor Cst.

[0139] The storage capacitor Cst is provided between the gate terminal and the source terminal of the driving switching element SW2, and stores a predetermined difference between a data signal level transmitted to one end of the storage capacitor Cst and a DC voltage (VDD) level transmitted to the other end of the storage capacitor Cst.

[0140] For example, when the data signal has different levels according to a pulse amplitude modulation (PAM) scheme, the power level stored in the storage capacitor Cst varies according to the level difference of the data signal Vdata.

[0141] In another example, when the data signal has different pulse widths according to a pulse width modulation (PWM) scheme, the power level stored in the storage capacitor Cst varies according to the pulse width difference of the data signal Vdata.

[0142] The driving switching element SW2 is turned on according to the power level store in the storage capacitor Cst. When the driving switching element SW2 is turned on, a driving current IOLED proportional to the stored power level flows to the organic light emitting layer OLED. Accordingly, the organic light emitting layer OLED performs a light emitting operation.

[0143] The organic light emitting layer OLED includes a light emitting layer (EML) corresponding to a subpixel, and can include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL). In addition, the organic light emitting layer OLED can include a hole blocking layer and the like.

[0144] In the figure, although p-type MOSFETs are illustrated as the scan switching element SW1 and the driving switching element SW2, n-type MOSFETs or other switching elements such as JFET, IGBT, or SIC can also be used.

[0145] Meanwhile, the pixel is a hold-type element that continuously emits light in the organic light emitting layer OLED during a unit display period, specifically during a unit frame, after a scan signal is applied.

[0146] Meanwhile, the subpixel circuit CRTm in the figure is driven by an active-matrix scheme.

[0147] FIG. 5D illustrates another example of a circuit of a subpixel in the pixel of the panel of FIG. 5A or FIG. 5B.

[0148] Referring to FIG. 5D, an organic light emitting subpixel circuit CRTm, which is a passive type, can include only an organic light emitting diode LED without any separate switching element.

[0149] As illustrated in FIG. 5D, the anode of the organic light emitting diode LED is connected to a data line to receive a data signal Vdata, and the cathode of the organic light emitting diode LED is connected to a scan line to receive a scan signal Vscan.

[0150] The organic light emitting diode can emit light or remain non-emissive based on a plurality of subframes according to a passive-matrix scheme.

[0151] Meanwhile, unlike FIG. 5D, the anode of the organic light emitting diode LED can be connected to a scan line to receive a scan signal Vscan, and the cathode of the organic light emitting diode LED can be connected to a data line to receive a data signal Vdata.

[0152] Meanwhile, the subpixel circuit CRTm in the figure is driven by a passive-matrix scheme.

[0153] FIG. 6 illustrates an example of an internal block diagram of a display apparatus for a vehicle related to the present disclosure.

[0154] Referring to FIG. 6, a display apparatus 100x for a vehicle (or simply referred to as "vehicle display apparatus") includes a signal processing device 170, a safety processor 186, a timing controller 232, and a panel 210.

[0155] The signal processing device 170 outputs a video signal, and the safety processor 186 receives the video signal and outputs the video signal and a signal corresponding to a vehicle warning (tell-tale) image.

[0156] The tell-tale image can include at least one of steering wheel information, battery information, ABS information, AFS information, airbag information, electronic parking brake information, Auto Hold information, door information, seat belt information, DPF (Diesel Particulate Filter) information, tail lamp information, low beam information, high beam information, and HDC (Hill Descent Control) information.

[0157] The timing controller 232 can receive the video signal and the signal corresponding to the tell-tale image, and can output a scan signal and a data signal to the panel 210.

[0158] Accordingly, an image corresponding to the video signal and the tell-tale image can be displayed on the panel 210.

[0159] Meanwhile, the signal processing device 170 and the safety processor 186 in the vehicle display apparatus 100x related to the present disclosure can be mounted on a first circuit board (not shown), and the timing controller 232 can be mounted on a second circuit board (not shown).

[0160] Accordingly, for transmission of the video signal and the signal corresponding to the tell-tale image, the safety processor 186 can convert them into low-voltage differential signaling (LVDS) signals and transmit the converted LVDS signals to the timing controller 232.

[0161] However, as the safety processor 186 and the timing controller 232 are spaced apart from each other, if the time controller 232 fails to receive a signal from the safety processor 186, an image or a tell-tale image cannot be displayed.

[0162] For example, when the safety processor 186 malfunctions or fails, a tell-tale image related to safety cannot be displayed on the panel 210, which causes a significant risk to vehicle safety.

[0163] Therefore, the present disclosure proposes a method for displaying a tell-tale image in a stable or reliable manner. This will be described with reference to FIG. 7 and subsequent figures.

[0164] FIG. 7 illustrates an example of an internal block diagram of a display apparatus for a vehicle according to an embodiment of the present disclosure.

[0165] Referring to FIG. 7, the vehicle display apparatus 100 according to an embodiment of the present disclosure includes an organic light emitting diode (OLED) panel 210 and a driving controller 285 that outputs a driving signal to the OLED panel 210.

[0166] The driving controller 285 outputs at least one tell-tale image to the OLED panel 210 by based on at least one tell-tale image stored in a memory 240.

[0167] Accordingly, it is possible to stably display the tell-tale image. In particular, as the tell-tale image can be output independently of a signal processing device 170, stable display of the tell-tale image is ensured.

[0168] The driving controller 285 can further include the memory 240 that stores at least one tell-tale image and a current detector 510 that detects a current flowing through the OLED panel 210.

[0169] Meanwhile, the at least one tell-tale image stored in the memory 240 can include a steering wheel information image, a battery information image, an ABS information image, an AFS information image, an airbag information image, an electronic parking brake (EPB) information image, and an Auto Hold information image.

[0170] Meanwhile, the vehicle display apparatus 100 of this embodiment can further include the signal processing device 170 that outputs a video signal.

[0171] When output of the video signal from the signal processing device 170 is interrupted, the driving controller 285 can output at least one tell-tale image and a predetermined image stored in the memory 240 to the OLED panel 210. Accordingly, it is possible to stably display at least one tell-tale image.

[0172] Meanwhile, the signal processing device 170 can output a video signal including a plurality of tell-tale images.

[0173] The driving controller 285 can receive the plurality of tell-tale images from the signal processing device 170, and can output the plurality of tell-tale images to the OLED panel 210, separately from the at least one tell-tale image. Accordingly, it is possible to display the plurality of tell-tale images.

[0174] At this time, the plurality of tell-tale images output from the signal processing device 170 can include a door information image, a seat belt information image, a DPF (Diesel Particulate Filter) information image, a tail lamp information image, a low beam information image, a high beam information image, and a HDC (Hill Descent Control) information image.

[0175] Meanwhile, when output of the video signal from the signal processing device 170 is interrupted, the driving controller 285 can output the at least one tell-tale image without outputting the plurality of tell-tale images. Accordingly, it is possible to stably display the tell-tale image.

[0176] Meanwhile, a safety level of the at least one tell-tale image output from the driving controller 285 can be greater than a safety level of the plurality of tell-tale images output from the signal processing device 170.

[0177] Accordingly, even when the signal output from the signal processing device 170 is interrupted due to a malfunction or failure of the signal processing device 170 or the like, it is possible to stably display at least one tell-tale image based on the driving controller 285.

[0178] FIG. 8A illustrates an example of an internal block diagram of a vehicle display apparatus according to another embodiment of the present disclosure.

[0179] Referring to FIG. 8A, a display apparatus 100b for a vehicle (or simply referred to as "vehicle display apparatus") according to another embodiment of the present disclosure includes, similarly to FIG. 7, an organic light emitting diode (OLED) panel 210 and a driving controller 285 that outputs a driving signal to the OLED panel 210. The driving controller 285 outputs at least one tell-tale image to the OLED panel 210 by based on at least one tell-tale image stored in a memory 240.

[0180] The vehicle display apparatus 100b of FIG. 8A differs from that of FIG. 7 in that the vehicle display apparatus 100b drives a plurality of displays 180a, 180b, and 180h.

[0181] To this end, the vehicle display apparatus 100b of this embodiment further includes an image distributor 177 configured to distribute an input video signal.

[0182] A first video signal distributed by the image distributor 177 is input to the driving controller 285, and a timing controller 232 in the driving controller 285 outputs a driving signal to the first display 180a including the OLED panel 210 based on the first video signal.

[0183] Meanwhile, the driving controller 285 outputs at least one tell-tale image to the first display 180a including the OLED panel 210 by based on at least one tell-tale image stored in the memory 240.

[0184] Meanwhile, the vehicle display apparatus 100b of this embodiment further includes a signal processing device 170 that outputs a video signal.

[0185] The signal processing device 170 can output a first video signal for the first display 180a, a second video signal for the second display 180b, and a third video signal for the third display 180h.

[0186] Meanwhile, for displaying a plurality of tell-tale images on the first display 180a, the signal processing device 170 can output a signal corresponding to the plurality of tell-tale images.

[0187] The signal corresponding to the plurality of tell-tale images can be input to the driving controller 285, and the driving controller 285 can control the plurality of tell-tale images to be displayed on the first display 180a based on the signal corresponding to the plurality of tell-tale images.

[0188] Meanwhile, a second video signal distributed by the image distributor 177 can be input to the second display 180b, and a third video signal distributed by the image distributor 177 can be input to the third display 180h.

[0189] Although a driving controller for the second display 180b and the third display 180h is not separately illustrated in the figure, a second driving controller (not shown) for the second display 180b and a third driving controller (not shown) for the third display 180h can be provided, similarly to the first display 180a.

[0190] Meanwhile, the second driving controller (not shown) for the second display 180b and the third driving controller (not shown) for the third display 180h can each use a memory therein to cause at least one tell-tale image to be displayed. Accordingly, it is possible to stably display at least one tell-tale image.

[0191] Alternatively, the tell-tale images for the second display 180b and the third display 180h can be output from the driving controller 285.

[0192] FIGS. 8B to 12Bare diagrams referred to in the description of FIGS. 7 and 8A.

[0193] FIG. 8B illustrates that a cluster image is displayed on the first display 180a based on the operation of the driving controller.

[0194] Referring to FIG. 8B, the driving controller 285 is disposed in a control circuit board CPB. The driving controller 285 can receive a video signal from the signal processing device 170, and can output a gate driving signal Sgaa, Sgab and a data signal Sda based on the video signal.

[0195] A driver Dra, Drb, Drc in a source circuit board SPB can receive the gate driving signal Sgaaa, Sgab and the data signal Sda from the driving controller 285, and can control a cluster image 900 to be displayed on the first display 180a based on the gate driving signal Sgaaa, Sgab and the data signal Sda.

[0196] FIG. 9A illustrates a cluster image 900.

[0197] Referring to FIG. 9A, the cluster image 900 can include vehicle speed information, driving information, vehicle temperature information, and the like.

[0198] In addition, the cluster image 900 can include a plurality of tell-tale images.

[0199] FIG. 9B illustrates that at least one tell-tale image from the driving controller 285 and a plurality of tell-tale images from the signal processing device 170 are distinguished and displayed within a cluster image.

[0200] Referring to FIG. 9B, tell-tale images within the cluster image 900 can be divided into at least one tell-tale image from the driving controller 285 and a plurality of tell-tale images from the signal processing device 170.

[0201] The at least one tell-tale image from the driving controller 285 can include a steering wheel information image 911, a battery information image 912, an ABS information image 913, an AFS information image 914, an airbag information image 915, an ESP (Electronic Stability Program) OFF information image 916, an ESP information image 917, an EPB (Electronic Parking Brake) information image 918, and an Auto Hold information image 919.

[0202] The plurality of tell-tale images from the signal processing device 170 can include a door information image 1011, a seat belt information image 1012, an engine information image 1013, a DPF (Diesel Particulate Filter) information image 1014, a four-wheel drive information image 1015, a tail lamp information image 1016, a low beam information image 1017, a high beam information image 1018, a HDC (Hill Descent Control) information image 1114, and an SOS information image 1112.

[0203] Meanwhile, a safety level of the at least one tell-tale image from the driving controller 285 can be greater than a safety level of the plurality of tell-tale images from the signal processing device 170. Accordingly, it is possible to stably display at least one tell-tale image.

[0204] Meanwhile, when the various tell-tale images of FIG. 9B are displayed on the OLED panel 210, degradation due to burn-in can occur. Therefore, the present disclosure also describes degradation determination or degradation compensation of various tell-tale images.

[0205] FIG. 10A illustrates an example of a character within a tell-tale image.

[0206] In the figure, although the character 'a' is illustrated in the tell-tale image, other characters such as 'A' in the ABS information image 913, the AFS information image 914, or the Auto Hold information image 919 can also be used.

[0207] Meanwhile, the driving controller 285 displays a tell-tale image on the cluster image 900, as shown in FIG. 9, and thus performs alpha blending on at least a portion of the tell-tale image to display the tell-tale image in a transparent or semi-transparent manner.

[0208] (a) of FIG. 10A illustrates a portion 1010 of the tell-tale image before alpha blending, and (b) of FIG. 10A illustrates a portion 1015 of the tell-tale image after alpha blending.

[0209] By the alpha blending, a transparency of the portion 1015 of the tell-tale image becomes greater than that of the portion 1010 of the tell-tale image.

[0210] FIG. 10B illustrates another example of a character within a tell-tale image.

[0211] In the figure, an 'S' is illustrated as the character in the tell-tale image. Here, the 'S' can be a character in the SOS information image 1112 of FIG. 9B.

[0212] A tell-tale image 1020 of FIG. 10B is an image subjected to alpha blending, with an area 1022 appearing as an opaque area and another area 1024 appearing as a transparent area.

[0213] Meanwhile, the driving controller 285 can perform degradation determination on at least one tell-tale image from the driving controller 285 or a plurality of tell-tale images from the signal processing device 170, and can perform degradation compensation when degradation is determined.

[0214] Meanwhile, when an alpha blending area is included in a first tell-tale image among at least one tell-tale image or a plurality of tell-tale images, the driving controller 285 can perform degradation determination excluding the alpha blending area.

[0215] For example, the driving controller 285 can perform degradation determination based on the opaque area 1022 or the like while excluding the transparent area 1024, which corresponds to the alpha blending area in the tell-tale image 1020 of FIG. 10B.

[0216] Specifically, in pixel counting for degradation determination, the driving controller 285 can perform degradation determination based on the opaque area 1022 while excluding the transparent area 1024 corresponding to the alpha blending area.

[0217] Meanwhile, the driving controller 285 can include a current detector 510 that detects a current flowing through the OLED panel 210, and can determine degradation of a tell-tale image based on the current detected by the current detector 510.

[0218] Meanwhile, when determining determination of at least one tell-tale image from the driving controller 285 or a plurality of tell-tale images from the signal processing device 170, the driving controller 85 can perform degradation determination based on a shape of the tell-tale image, and can perform degradation compensation corresponding to the shape of the tell-tale image.

[0219] For example, when determining degradation of at least one tell-tale image from the driving controller 285 or a plurality of tell-tale images from the signal processing device 170, the driving controller 285 can perform degradation determination based on a shape of the tell-tale image, rather than performing degradation determination based on a square block within the tell-tale image. Accordingly, more accurate degradation determination is ensured.

[0220] In another example, when determining degradation of at least one tell-tale image from the driving controller 285 or a plurality of tell-tale images from the signal processing device 170, the driving controller 285 can perform degradation determination based on pixels of the tell-tale image, and can perform degradation compensation on the pixels of the tell-tale image. Accordingly, it is possible to prevent degradation of the tell-tale image.

[0221] Meanwhile, the driving controller 285 can detect a check bit added to at least one tell-tale image from the driving controller 285 or a plurality of tell-tale images from the signal processing device 170, can perform degradation determination on the tell-tale image based on the check bit, and can perform degradation compensation on pixels of the tell-tale image based on the degradation determination.

[0222] FIG. 10C illustrates that a check bit is added to a partial area of a tell-tale image.

[0223] As shown in (a) of FIG. 10C, a check bit PTa can be added to any one area of a tell-tale image 1032, and the driving controller 285 can detect whether the check bit PTa in the tell-tale image 1032 has changed.

[0224] For example, the driving controller 285 can determine that degradation has occurred upon a change in the check bit PTa, and can perform degradation compensation.

[0225] Meanwhile, as shown in (b) of FIC. 10C, check bits PT1 to PT4 can be respectively added to a plurality of areas of a tell-tale image 1034, and the driving controller 285 can detect whether the check bits PT1 to PT4 in the tell-tale image 1034 have changed.

[0226] For example, the driving controller 285 can determine that degradation has occurred upon a change in the check bits PT1 to PT4, and can perform degradation compensation.

[0227] Meanwhile, when an alpha blending area is included in a first tell-tale image among at least one tell-tale image, the driving controller 285 can check degradation of the alpha blending area based on a mask layer corresponding to the alpha blending area, and can perform degradation compensation based on a result of the degradation check. This will be described with reference to FIG. 11A and subsequent figures.

[0228] FIG. 11A illustrates an example of performing degradation determination on an alpha blending area within a tell-tale image.

[0229] Referring to the figure, (a) of FIG. 11Acan be an SOS information image 1050, which is a tell-tale image provided by the signal processing device 170.

[0230] Since the 'S' character in the SOS information image 1050 includes a curved area, it is divided into a transparent area 1024 and an opaque area 1022 by alpha blending, as shown in FIG. 10B.

[0231] As described above, the opaque area 1022 can be counted when determining degradation, whereas the transparent area 1024 cannot be counted.

[0232] However, since degradation can also occur in the transparent area 1024, the present disclosure uses a mask layer 1055, such as that shown in (b) of FIG. 11A, to determine degradation of the transparent area 1024.

[0233] The mask layer 1055 can cover an entire area of the 'SOS' character.

[0234] The driving controller 285 can superimpose the mask layer 1055 on a tell-tale image 1060 of (c) of FIG. 11A.

[0235] Then, the driving controller 285 can check degradation based on a superimposed image 1065, as shown in (d) of FIG. 11A.

[0236] Accordingly, the driving controller 285 can perform counting for the transparent area in the tell-tale image.

[0237] Meanwhile, when an alpha blending area is included in a first tell-tale image among at least one tell-tale image, the driving controller 285 can perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area.

[0238] Meanwhile, when alpha blending values for respective colors of the alpha blending area are different, the driving controller 285 can differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area.

[0239] For example, upon degradation compensation, the driving controller 285 can perform luminance compensation for red, orange, and green.

[0240] Specifically, upon degradation compensation, the driving controller 285 can control luminance compensation values for red, orange, and green to differ from one another.

[0241] Meanwhile, when alpha blending values for respective colors of the alpha blending area are different, the driving controller 285 can control luminance compensation values for red, orange, and green of the alpha blending area to differ from one another. Accordingly, it is possible to prevent degradation of the tell-tale image.

[0242] FIG. 11B illustrates a screen 1110 including a plurality of tell-tale images.

[0243] Referring to 11B, the screen 1110 can include a battery information image 912 and an AFS information image 914, which are at least one tell-tale image from the driving controller 285.

[0244] Meanwhile, the screen 1110 can include an SOS information image 1112 and a HDC (Hill Descent Control) information image 1114, which are a plurality of tell-tale images from the signal processing device 170.

[0245] The driving controller 285 can perform degradation determination on the battery information image 912 and the AFS information image 914, which are at least one tell-tale image from the driving controller 285, based on the method of FIG. 11Aor the like.

[0246] Alternatively, the driving controller 285 can perform degradation determination on the SOS information image 1112 and the HDC (Hill Descent Control) information image 1114, which are a plurality of tell-tale images from the signal processing device 170, based on the method of FIG. 11A or the like.

[0247] FIG. 11C illustrates an example of a tell-tale image after degradation compensation.

[0248] Referring to the figure, (a) of FIG. 11C illustrates an image 1120 including a plurality of tell-tale images 922, 924, 1122, and 1124 that have been subjected to degradation compensation based on the plurality of tell-tale images 912, 914, 1112, and 1114 of FIG. 11B.

[0249] The driving controller 285 can perform degradation compensation by shifting only the plurality of tell-tale images 922, 924, 1122, and 1124 within the image 1120.

[0250] For example, the driving controller 285 can perform pixel shifting, first axis line shifting, or second axis line shifting only on the plurality of tell-tale images 922, 924, 1122, and 1124 within the image 1120.

[0251] (b) of FIG. 11C illustrates a cluster image 1130 including speed information and the like.

[0252] Meanwhile, as shown in (c) of FIG. 11C, the driving controller 285 can control the plurality of degradation-compensated tell-tale images 922, 924, 1122, and 1124 to be superimposed on a cluster image 1140. Accordingly, it is possible to display the degradation-compensated tell-tale images.

[0253] FIG. 11D illustrates various examples of degradation compensation.

[0254] Referring to the figure, the driving controller 285 can perform pixel shifting of a tell-tale image as shown in (a) of FIG. 11D, can perform first axis (y axis) line shifting of the tell-tale image as shown in (b) of FIG. 11D, or can perform second axis (x axis) line shifting of the tell-tale image as shown in (c) of FIG. 11D.

[0255] Specifically, the driving controller 285 can perform degradation compensation on at least one tell-tale image from the driving controller 285 to perform pixel shifting or line shifting on the at least one tell-tale image or can change luminance of the at least one tell-tale image. Accordingly, it is possible to stably display the at least one tell-tale image while preventing degradation of the tell-tale image.

[0256] Meanwhile, the driving controller 285 can perform degradation compensation on a plurality of tell-tale images from the signal processing device 170, and can perform pixel shifting or line shifting on the plurality of tell-tale images or can change luminance of the plurality of tell-tale images. Accordingly, it is possible to stably display the plurality of tell-tale images while preventing degradation of the tell-tale images.

[0257] FIG. 12A illustrates various displays of a cluster image.

[0258] As shown in (a) of FIG. 12A, the driving controller 285 can control a cluster image 1210 including a plurality of tell-tale images 912 and 914, vehicle speed information 1211, and vehicle driving information 1212 to be displayed on the OLED panel 210.

[0259] In this case, the plurality of tell-tale images 912 and 914 are generated based on the memory 240 in the driving controller 285, and the vehicle speed information 1211 and vehicle driving information 1212 can be generated based on a video signal received from the signal processing device 170.

[0260] Meanwhile, in a case where the plurality of tell-tale images 912 and 914 are received from the signal processing device 170, when the signal processing device 170 malfunctions or fails, a black image 1220 with no information displayed, as shown in (b) of FIG. 12A, is displayed on the OLED panel 210.

[0261] In such a case, it can cause a serious safety issue during vehicle driving.

[0262] Therefore, in the present disclosure, as described above, safety-related tell-tale images 912 and 914 are generated and output by the driving controller 285, rather than by the signal processing device 170.

[0263] Meanwhile, the memory 240 in the driving controller 285 can temporarily store vehicle speed information, a background screen, and the like received from the signal processing device 170.

[0264] Accordingly, even when the signal processing device 170 malfunctions or fails, the driving controller 285 can control a cluster image 1230 including tell-tale images 912 and 914 related to safety, vehicle speed information 1211, a background screen, and the like to be displayed, as shown in (c) of FIG. 12A. Thus, even when the signal processing device 170 malfunctions or fails, it is possible to stably display the tell-tale images and the like.

[0265] However, the cluster image 1230 cannot include certain information, such as vehicle driving information 1212, and an area for displaying the vehicle driving information can be displayed as a black area 1232.

[0266] FIG. 12B illustrates a cluster image including safety information.

[0267] Referring to 12B, the driving controller 285 can control safety status information to be displayed in a partial area (BLa, BLb) of the cluster image according to a vehicle state.

[0268] In the figure, safety status information is displayed in both end areas BLa and BLb, which are partial areas of the cluster image.

[0269] For example, the driving controller 285 can control the end areas BLa and BLb to be displayed in green when the vehicle state is a safe state, in yellow or orange when the vehicle state requires caution, and in red when the vehicle state is a warning state.

[0270] This allows a driver to intuitively recognize the vehicle state.

[0271] It will be apparent that, although the preferred embodiments have been shown and described above, the present disclosure is not limited to the above-described specific embodiments, and various modifications and variations can be made by those skilled in the art without departing from the gist of the appended claims. Thus, it is intended that the modifications and variations should not be understood independently of the technical spirit or prospect of the present disclosure.

Examples

Embodiment Construction

[0048]Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings.

[0049]With respect to constituent elements used in the following description, suffixes "module" and "unit" are given only in consideration of ease in preparation of the specification, and do not have or serve different meanings. Accordingly, the suffixes "module" and "unit" can be used interchangeably.

[0050]FIG. 1 illustrates an example of the exterior and interior of a vehicle.

[0051]Referring to FIG.1, a vehicle 200 can include a plurality of wheels 103FR, 103FL, 103RL, ... rotated by a power source and a steering wheel 150 for adjusting a traveling direction of the vehicle 200.

[0052]The vehicle 200 can further include a camera 195 for acquiring an image of the front of the vehicle.

[0053]The vehicle 200 can further include therein a plurality of displays 180a, 180b, and 180h for displaying images, information, and the like.

[0054]For example, among the plurality of displ...

BACKGROUND 1. Field

[0001] The present disclosure relates to a display apparatus for a vehicle, and more particularly, to a display apparatus for a vehicle capable of stably displaying a vehicle warning (tell-tale) image.2. Description of the Related Art

[0002] A vehicle is a machine that allows a user who rides therein to move in a desired direction. A representative example of the vehicle is a car.

[0003] Meanwhile, for convenience of vehicle users, some vehicles are equipped with a display apparatus or device.

[0004] For example, a display is positioned on an instrument cluster to present various types of information. In addition to the cluster display, in order to display vehicle driving information and the like, various displays, such as an AVN (Audio Video Navigation) display and a head-up display that outputs a projection image onto a windshield, are increasingly being mounted in vehicles.

[0005] Conventionally, vehicle warning images (i.e., tell-tales) have been presented using a lamp-based method. However, it is becoming common to display vehicle warning images using in-vehicle displays.

[0006] To display such vehicle warning images, a signal processing device in the vehicle outputs a video signal including the vehicle warning images. However, when the signal processing device malfunctions or fails, the vehicle warning images cannot be displayed.SUMMARY

[0007] It is an object of the present disclosure to provide a display apparatus for a vehicle capable of stably displaying a vehicle warning (tell-tale) image.

[0008] It is another object of the present disclosure to provide a display apparatus for a vehicle capable of preventing degradation of a vehicle warning (tell-tale) image.

[0009] In accordance with an aspect of the present disclosure, the above and other objects can be accomplished by providing a display apparatus for a vehicle including: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to output, based on at least one tell-tale image stored in a memory, the at least one tell-tale image to the OLED panel.

[0010] The driving controller can be configured to: receive a plurality of tell-tale images from a signal processing device; and output the plurality of tell-tale images to the OLED panel separately from the at least one tell-tale image.

[0011] The driving controller can be configured to perform degradation compensation on the at least one tell-tale image.

[0012] In response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, the driving controller can be configured to: check degradation of the alpha blending area based on a mask layer corresponding to the alpha blending area; and perform determination compensation based on a result of the degradation check.

[0013] In response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, the driving controller can be configured to perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area.

[0014] In response to alpha blending values for the respective colors of the alpha blending area being different, the driving controller can be configured to differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area.

[0015] Upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to perform pixel shifting, first axis line shifting, or second axis line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image.

[0016] The driving controller can include a current detector configured to detect a current flows through the OLED panel. The driving controller can be configured to: determine degradation of the at least one tell-tale image based on the current detected by the current detector; and upon determination of degradation of the at least one tell-tale image, perform pixel shifting, first axis line shifting, or second axis line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image.

[0017] Upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to: perform degradation determination based on a shape of the at least one tell-tale image; and perform degradation compensation corresponding to the shape of the at least one tell-tale image.

[0018] Upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to: perform degradation determination based on a pixel of the at least one tell-tale image; and perform degradation compensation on the pixel of the at least one tell-tale image.

[0019] The driving controller can be configured to: detect a check bit added to the at least one tell-tale image; perform degradation determination on the at least one tell-tale image based on the check bit; and perform degradation compensation on a pixel of the at least one tell-tale image based on a result of the degradation determination.

[0020] The display apparatus can further include a signal processing device configured to output a video signal. In response to output of the video signal from the signal processing device being interrupted, the driving controller can be configured to output the at least one tell-tale image and a predetermined image stored in the memory to the OLED panel.

[0021] The signal processing device can be configured to output a video signal including a plurality of tell-tale images. In response to output of the video signal from the signal processing device being interrupted, the driving controller can be configured to output the at least one tell-tale image without outputting the plurality of tell-tale images.

[0022] A safety level of the at least one tell-tale image can be greater than a safety level of the plurality of tell-tale images.

[0023] In accordance with another aspect of the present disclosure, there is provided a display apparatus for a vehicle including: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to: output at least one tell-tale image to the OLED panel; and perform degradation compensation on the at least one tell-tale image to perform pixel shifting or line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image.

[0024] The driving controller can be configured to: receive a plurality of tell-tale images from a signal processing device; and output the plurality of tell-tale images to the OLED panel separately from the at least one tell-tale image.

[0025] The driving controller can be configured to perform degradation compensation on the plurality of tell-tale images to perform pixel shifting or line shifting on the plurality of tell-tale images or change luminance of the plurality of tell-tale images.

[0026] In accordance with yet another aspect of the present disclosure, there is provided a display apparatus for a vehicle including: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to OLED panel, wherein the driving controller is configured to: output at least one tell-tale image to the OLED panel; and in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area.

[0027] In response to alpha blending values for the respective colors of the alpha blending area being different, the driving controller can be configured to differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area.EFFECTS OF THE DISCLOSURE

[0028] A display apparatus for a vehicle according to an embodiment of the present disclosure includes: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to output, based on at least one tell-tale image stored in a memory, the at least one tell-tale image to the OLED panel. Thus, it is possible to stably display the tell-tale image. In particular, as the tell-tale image can be output independently of a signal processing device, it is possible to stably display the tell-tale image.

[0029] Meanwhile, the driving controller can be configured to: receive a plurality of tell-tale images from a signal processing device; and output the plurality of tell-tale images to the OLED panel separately from the at least one tell-tale image. Thus, it is possible to stably display the tell-tale images.

[0030] Meanwhile, the driving controller can be configured to perform degradation compensation on the at least one tell-tale image. Thus, it is possible to prevent degradation of the tell-tale image.

[0031] Meanwhile, in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, the driving controller can be configured to: check degradation of the alpha blending area based on a mask layer corresponding to the alpha blending area; and perform determination compensation based on a result of the degradation check. Thus, it is possible to prevent degradation of the tell-tale image.

[0032] Meanwhile, in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, the driving controller can be configured to perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area. Thus, it is possible to prevent degradation of the tell-tale image.

[0033] Meanwhile, in response to alpha blending values for the respective colors of the alpha blending area being different, the driving controller can be configured to differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area. Thus, it is possible to prevent degradation of the tell-tale image.

[0034] Meanwhile, upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to perform pixel shifting, first axis line shifting, or second axis line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image. Thus, it is possible to prevent degradation of the tell-tale image.

[0035] Meanwhile, the driving controller can include a current detector configured to detect a current flows through the OLED panel. The driving controller can be configured to: determine degradation of the at least one tell-tale image based on the current detected by the current detector; and upon determination of degradation of the at least one tell-tale image, perform pixel shifting, first axis line shifting, or second axis line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image. Thus, it is possible to prevent degradation of the tell-tale image.

[0036] Meanwhile, upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to: perform degradation determination based on a shape of the at least one tell-tale image; and perform degradation compensation corresponding to the shape of the at least one tell-tale image. Thus, it is possible to prevent degradation of the tell-tale image.

[0037] Meanwhile, upon determination of degradation of the at least one tell-tale image, the driving controller can be configured to: perform degradation determination based on a pixel of the at least one tell-tale image; and perform degradation compensation on the pixel of the at least one tell-tale image. Thus, it is possible to prevent degradation of the tell-tale image.

[0038] Meanwhile, the driving controller can be configured to: detect a check bit added to the at least one tell-tale image; perform degradation determination on the at least one tell-tale image based on the check bit; and perform degradation compensation on a pixel of the at least one tell-tale image based on a result of the degradation determination. Thus, it is possible to prevent degradation of the tell-tale image.

[0039] Meanwhile, the display apparatus for a vehicle can further include a signal processing device configured to output a video signal. In response to output of the video signal from the signal processing device being interrupted, the driving controller can be configured to output the at least one tell-tale image and a predetermined image stored in the memory to the OLED panel. Thus, it is possible to stably display at least one tell-tale image.

[0040] Meanwhile, the signal processing device can be configured to output a video signal including a plurality of tell-tale images. In response to output of the video signal from the signal processing device being interrupted, the driving controller can be configured to output the at least one tell-tale image without outputting the plurality of tell-tale images. Thus, it is possible to stably display the tell-tale image.

[0041] Meanwhile, a safety level of the at least one tell-tale image can be greater than a safety level of the plurality of tell-tale images. Thus, it is possible to stably display the at least one tell-tale image.

[0042] A display apparatus for a vehicle according to another embodiment of the present disclosure includes: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to: output at least one tell-tale image to the OLED panel; and perform degradation compensation on the at least one tell-tale image to perform pixel shifting or line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image. Thus, it is possible to stably display the at least one tell-tale image while preventing degradation of the tell-tale image.

[0043] Meanwhile, the driving controller can be configured to: receive a plurality of tell-tale images from a signal processing device; and output the plurality of tell-tale images to the OLED panel separately from the at least one tell-tale image. Thus, it is possible to display the plurality of tell-tale images.

[0044] Meanwhile, the driving controller can be configured to perform degradation compensation on the plurality of tell-tale images to perform pixel shifting or line shifting on the plurality of tell-tale images or change luminance of the plurality of tell-tale images. Thus, it is possible to prevent degradation of the tell-tale image.

[0045] A display apparatus for a vehicle according to yet another embodiment of the present disclosure includes: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to OLED panel, wherein the driving controller is configured to: output at least one tell-tale image to the OLED panel; and in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area. Thus, it is possible to stably display the at least one tell-tale image while preventing degradation of the tell-tale image.

[0046] Meanwhile, in response to alpha blending values for the respective colors of the alpha blending area being different, the driving controller can be configured to differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area. Thus, it is possible to prevent degradation of the tell-tale image.BRIEF DESCRIPTION OF THE DRAWINGS

[0047] FIG. 1 illustrates an example of the exterior and interior of a vehicle. FIG. 2 illustrates an outer appearance of a display apparatus for a vehicle according to an embodiment of the present disclosure. FIG. 3 illustrates an example of an internal block diagram of the display apparatus for a vehicle of FIG. 2. FIG. 4 is an internal block diagram of a first display or a second display of FIG. 2. FIGS. 5A to 5D are diagrams referred to in the description of an organic light emitting diode (OLED) panel of FIG. 4. FIG. 6 illustrates an example of an internal block diagram of a display apparatus for a vehicle related to the present disclosure. FIG. 7 illustrates an example of an internal block diagram of a display apparatus for a vehicle according to an embodiment of the present disclosure. FIG. 8A illustrates an example of an internal block diagram of a display apparatus for a vehicle according to another embodiment of the present disclosure. FIGS. 8B to 12B are diagrams referred to in the description of FIGS. 7 and 8A. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0048] Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings.

[0049] With respect to constituent elements used in the following description, suffixes "module" and "unit" are given only in consideration of ease in preparation of the specification, and do not have or serve different meanings. Accordingly, the suffixes "module" and "unit" can be used interchangeably.

[0050] FIG. 1 illustrates an example of the exterior and interior of a vehicle.

[0051] Referring to FIG.1, a vehicle 200 can include a plurality of wheels 103FR, 103FL, 103RL, ... rotated by a power source and a steering wheel 150 for adjusting a traveling direction of the vehicle 200.

[0052] The vehicle 200 can further include a camera 195 for acquiring an image of the front of the vehicle.

[0053] The vehicle 200 can further include therein a plurality of displays 180a, 180b, and 180h for displaying images, information, and the like.

[0054] For example, among the plurality of displays 180a, 180b, and 180h, a first display 180a can be a cluster display, a second display 180b can be an audio video navigation (AVN) display, and a third display 180h can be a head-up display (HUD) that projects an image onto a predetermined area Ara of a windshield WS.

[0055] Meanwhile, a display apparatus 100 for a vehicle of the present disclosure (see FIG. 7) is configured such that, among a plurality of displays 180a, 180b, and 180h, the first display 180a or the second display 180b includes an organic light emitting diode (OLED) panel and displays a vehicle warning image on the OLED panel.

[0056] In particular, the display apparatus 100 for a vehicle of the present disclosure (see FIG. 7) includes an organic light emitting diode (OLED) panel 210 and a driving controller 285 that outputs a driving signal to the OLED panel 210. The driving controller 285 outputs at least one vehicle warning image to the OLED panel 210 based on at least one vehicle warning image stored in a memory 240. Accordingly, it is possible to stably display the vehicle warning image. In particular, the vehicle warning image can be output independently of a signal processing device 170 (see FIG. 7), thereby ensuring a stable display of the vehicle warning image.

[0057] Meanwhile, the vehicle 200 described herein can be a concept including all of an internal combustion engine vehicle having an engine as a power source, a hybrid vehicle having an engine and an electric motor as power sources, and an electric vehicle having an electric motor as a power source.

[0058] FIG. 2 illustrates an outer appearance of a display apparatus for a vehicle according to an embodiment of the present disclosure.

[0059] The display apparatus 100 for a vehicle (or simply "vehicle display apparatus") according to an embodiment of the present disclosure can include a signal processing device 170 configured to perform signal processing to display an image, information, and the like on at least one of a plurality of displays 180a, 180b, and 180h.

[0060] Among the plurality of displays 180a, 180b, and 180h, the first display 180a can be a cluster display 180a for displaying a driving state and operation information, the second display 180b can be an AVN (Audio Video Navigation) display for displaying vehicle driving information, a navigation map, various types of entertainment information, or an image, and the third display 180h can be a HUD display 180h for displaying vehicle driving information.

[0061] The signal processing device 170 can be provided therein with a memory 508 and a processor 175 to control at least one of the plurality of displays 180a, 180b, and 180h.

[0062] Meanwhile, the signal processing device 170 can execute first to third virtual machines (not shown) on a hypervisor 505 in the processor 175.

[0063] The first virtual machine (not shown), which is a server virtual machine, can control the second virtual machine (not shown) and the third virtual machine (not shown), which are guest virtual machines.

[0064] Meanwhile, the second virtual machine can be referred to as a first guest virtual machine, and the third virtual machine can be referred to as a second guest virtual machine.

[0065] The first guest virtual machine (not shown) can be operated for the first display 180a, and the second guest virtual machine (not shown) can be operated for the second display 180b or the third display 180h.

[0066] Meanwhile, the server virtualization machine (not shown) in the processor 175 can be configured to set the memory 508 based on the hypervisor 505 for transmission of the same data to the first guest virtualization machine (not shown) and the second guest virtualization machine (not shown). Accordingly, the first display 180a and the second display 180b in the vehicle can display the same information or the same image in a synchronized manner.

[0067] Meanwhile, the server virtualization machine (not shown) in the processor 175 can receive and process wheel speed sensor data of the vehicle, and can transmit the processed wheel speed sensor data to at least one of the first guest virtualization machine (not shown) and the second guest virtualization machine (not shown). Accordingly, at least one virtual machine can share the wheel speed sensor data of the vehicle.

[0068] Thus, based on the single signal processing device 170, it is possible to control the plurality of displays 180a, 180b, and 180h.

[0069] Meanwhile, some of the plurality of displays 180a, 180b, and 180h can operate under a Linux-based operating system (OS), and others can operate under a Web-based operating system (OS).

[0070] In some embodiments, the signal processing device 170 can control the plurality of displays 180a, 180b, and 180h operating under different operating systems (OS) to display the same information or the same image in a synchronized manner.

[0071] FIG. 3 illustrates an example of an internal block diagram of a display apparatus for a vehicle according to an embodiment of the present disclosure.

[0072] Referring to FIG. 3, the vehicle display apparatus 100 according to an embodiment of the present disclosure can include an input device 110, a transceiver 120, an interface 130, a memory 140, a signal processing device 170, a plurality of displays 180a, 180b, and 180h, an audio output device 185, and a power supply 190.

[0073] The input device 110 can include a physical button, a pad, and the like for button input, touch input, and the like.

[0074] Meanwhile, the input device 110 can include a microphone (not shown) for user voice input.

[0075] The transceiver 120 can wirelessly exchange data with a mobile terminal 800 or a server (not shown).

[0076] In particular, the transceiver 120 can wirelessly exchange data with a mobile terminal of a vehicle driver. Any of various data communication schemes, such as Bluetooth, Wi-Fi, Wi-Fi Direct, and APIX, can be used as a wireless data communication scheme.

[0077] The transceiver 120 can receive weather information and road traffic condition information, e.g., transport protocol expert group (TPEG) information, from the mobile terminal 800 or the server (not shown). To this end, the transceiver 120 can include a mobile communication module (not shown).

[0078] The interface 130 can receive sensor information from an electronic control unit (ECU) 770 or a sensor device 760, and can transmit the received information to the signal processing device 170.

[0079] Here, the sensor information can include at least one of vehicle heading information, vehicle location information (global positioning system (GPS) information), vehicle angle information, vehicle speed information, vehicle acceleration information, vehicle tilt information, vehicle forward / backward movement information, battery information, fuel information, tire information, vehicle lamp information, in-vehicle temperature information, and in-vehicle humidity information.

[0080] The sensor information can be acquired from a heading sensor, a yaw sensor, a gyro sensor, a position module, a vehicle forward / backward movement sensor, a wheel sensor, a vehicle speed sensor, a vehicle body tilt sensor, a battery sensor, a fuel sensor, a tire sensor, a steering wheel rotation sensor, an in-vehicle temperature sensor, an in-vehicle humidity sensor, etc. The position module can include a GPS module for receiving GPS information.

[0081] Meanwhile, the interface 130 can receive front-of-vehicle image data, side-of-vehicle image data, rear-of-vehicle image data, and obstacle-around-vehicle distance information from a camera 195, a LiDAR (not shown), or the like, and can transmit the received information to the signal processing device 170.

[0082] The memory 140 can store various data necessary for the overall operation of the vehicle display apparatus 100, such as programs for processing or control of the signal processing device 170.

[0083] For example, the memory 140 can store data regarding a hypervisor, a server virtual machine (not shown), and a plurality of guest virtual machines to execute within the processor 175.

[0084] The audio output device 185 can convert an electrical signal from the signal processing device 170 into an audio signal and output the audio signal. To this end, the audio output device 185 can include a speaker and the like.

[0085] Under the control of the signal processing device 170, the power supply 190 can supply power required for the operation of each component. In particular, the power supply 190 can receive power from a battery in the vehicle.

[0086] The third display 180h, which is a HUD display, can include a picture generation device 300 (see FIG. 1) to project an image, and can output an augmented reality-based object under the control of the signal processing device 170.

[0087] For example, the HUD display 180h can output vehicle speed information, vehicle traveling direction information, a forward-vehicle object, a distance indicator showing a distance to a vehicle ahead, and the like.

[0088] In another example, the HUD display 180h can output an augmented reality lane carpet, an augmented reality route carpet, or an augmented reality dynamic carpet corresponding to a road image.

[0089] The signal processing device 170 can control the plurality of displays 180a, 180b, and 180h.

[0090] The signal processing device 170 can control the overall operation of each unit or device in the vehicle display apparatus 100.

[0091] For example, the signal processing device 170 can include a memory 508 and a processor 175 configured to perform signal processing for the vehicle displays 180a and 180b.

[0092] The processor 175 can execute the hypervisor (not shown), and can execute the server virtual machine (not shown) and the plurality of guest virtual machines (not shown) on the executed hypervisor.

[0093] Here, the first guest virtual machine (not shown) can be operated for the first display 180a, and the second guest virtual machine (not shown) can be operated for the second display 180b or the third display 180h.

[0094] Meanwhile, the signal processing device 170 can process various signals, such as an audio signal, a video (or image) signal, and a data signal. To this end, the signal processing device 170 can be implemented in the form of a system on chip (SOC).

[0095] FIG. 4 is an internal block diagram of a first display or a second display of FIG. 2.

[0096] Hereinafter, a description will be given based on the first display 180a.

[0097] Referring to FIG. 4, the display 180a based on an organic light emitting diode panel can include an organic light emitting diode (OLED) panel 210, a first interface 230, a second interface 231, a timing controller 232, a gate driver 234, a data driver 236, a memory 240, a power supply 290, a current detector 510, and the like.

[0098] The display 180 can receive a video signal Vd, a first DC power V1, and a second DC power V2, and can display a predetermined image based on the video signal Vd.

[0099] Meanwhile, the first interface 230 in the display 180 can receive the video signal Vd and the first DC power V1 from the signal processing device 170.

[0100] Here, the first DC power V1 can be used for the operation of the power supply 290 and the timing controller 232 in the display 180.

[0101] The second interface 231 can receive the second DC power V2 from an external power supply 190. Meanwhile, the second DC power V2 can be input to the data driver 236 in the display 180.

[0102] The timing controller 232 can output a data driving signal Sda and a gate driving signal Sga, based on the video signal Vd.

[0103] For example, when the first interface 230 converts the input video signal Vd and outputs a converted video signal va1, the timing controller 232 can output the data driving signal Sda and the gate driving signal Sga based on the converted video signal va1.

[0104] The timing controller 232 can further receive a control signal, a vertical synchronization signal Vsync, etc., in addition to the video signal Vd from the signal processing device 170.

[0105] In addition to the video signal Vd, based on the control signal, the vertical synchronization signal Vsync, etc., the timing controller 232 can output a gate driving signal Sga for the operation of the gate driver 234 and a data driving signal Sda for the operation of the data driver 236.

[0106] In this case, when the OLED panel 210 includes RGB subpixels, the data driving signal Sda can be a data driving signal for driving the RGB subpixels.

[0107] When the OLED panel 210 includes RGBW subpixels, the data driving signal Sda can be a data driving signal for driving the RGBW subpixels.

[0108] Meanwhile, the timing controller 232 can further output a control signal Cs to the gate driver 234.

[0109] The gate driver 234 and the data driver 236 supply a scan signal and a data signal to the OLED panel 210 through a gate line GL and a data line DL, respectively, according to the gate driving signal Sga and the data driving signal Sda from the timing controller 232. This allows the OLED panel 210 to display a predetermined image.

[0110] Meanwhile, the OLED panel 210 can include an organic light emitting layer. In order to display an image, a plurality of gate lines GL and data lines DL can be disposed in a matrix form in each pixel corresponding to the organic light emitting layer.

[0111] Meanwhile, as a scan signal is input to the gate line GL, the gate line GL can also be referred to as a scan line.

[0112] Meanwhile, the data driver 236 can output a data signal to the OLED panel 210 based on the second DC power V2 from the second interface 231.

[0113] The power supply 290 can supply various types of power to the gate driver 234, the data driver 236, the timing controller 232, and the like.

[0114] The current detector 510 can detect a current flowing through subpixels of the OLED panel 210. The detected current can be input to the processor 270 or the like, for a cumulative (or accumulated) current calculation.

[0115] Meanwhile, the timing controller 232, the gate driver 234, the data driver 236, and the memory 240 in the figure can be configured as a single integrated circuit (IC).

[0116] Therefore, the timing controller 232, the gate driver 234, the data driver 236, and the memory 240 can be collectively referred to as a driving controller 285.

[0117] Meanwhile, the driving controller 285 can include a buffer (not shown) to store frame data.

[0118] In particular, the timing controller 232 in the driving controller 285 can output a gate driving signal and a data driving signal based on the frame data stored in the buffer (not shown) or the memory 240.

[0119] The timing controller 232 or the driving controller 285 can perform various types of control in the display 180. For example, the driving controller 285 can control the gate driver 234, the data driver 236, the timing controller 232, and the like.

[0120] Meanwhile, the timing controller 232 or the driving controller 285 can receive current information flowing through subpixels of the OLED panel 210 from the current detector 510.

[0121] Then, based on the current information flowing through the subpixels of the OLED panel 210, the timing controller 232 or the driving controller 285 can calculate an accumulated current of each subpixel of the OLED panel 210. The calculated accumulated current can be stored in the memory 240.

[0122] Meanwhile, the driving controller 285 can determine burn-in when the accumulated current of each subpixel of the OLED panel 210 is equal to or greater than an allowable value.

[0123] For example, when the accumulated current of each subpixel of the OLED panel 210 is equal to or greater than 300000 A, the timing controller 232 or the driving controller 285 can determine that a corresponding subpixel is a burn-in subpixel.

[0124] Meanwhile, when the accumulated current of a subpixel, among the subpixels of the OLED panel 210, is close to an allowable value, the timing controller 232 or the driving controller 285 can determine the corresponding subpixel as a burn-in predicted subpixel.

[0125] Meanwhile, based on the current detected by the current detector 510, the timing controller 232 or the driving controller 285 can determine a subpixel having the greatest accumulated current as a burn-in predicted subpixel.

[0126] Meanwhile, irrespective of the operation of the current detector 510, the timing controller 232 or the driving controller 285 can predict current information to flow through subpixels based on the video signal from the signal processing device 170, and can determine a burn-in predicted subpixel based on the predicted current information.

[0127] FIGS. 5A to 5D are diagrams referred to in the description of the OLED panel of FIG. 4.

[0128] FIG. 5A illustrates an example of a pixel in the OLED panel 210.

[0129] Referring to FIG. 5A, the OLED panel 210 can include a plurality of scan lines Scan 1 to Scan n and a plurality of data lines R1, G1, B1 to Rm, Gm, Bm intersecting the scan lines.

[0130] Meanwhile, a pixel (subpixel) is defined in an intersection area of the scan line and the data line in the OLED panel 210. In the figure, a pixel including RGB subpixels SR1, SG1, and SB1 is illustrated.

[0131] Meanwhile, the RGB subpixels SR1, SG1, and SB1 are respectively provided with a red organic light emitting diode, a green organic light emitting diode, and a blue organic light emitting diode.

[0132] FIG. 5B illustrates another example of a pixel in the OLED panel 210.

[0133] Referring to FIG. 5B, the OLED panel 210 can include a plurality of scan lines Scan 1 to Scan n and a plurality of data lines R1, G1, B1, W1 to Rm, Gm, Bm, Wm intersecting the scan lines.

[0134] Meanwhile, a pixel (subpixel) is defined in an intersection area of the scan line and data line in the OLED panel 210. In the figure, a pixel including RGBW subpixels SR1, SG1, SB1, and SW1 is illustrated.

[0135] The RGBW subpixels SR1, SG1, SB1, and SW1 are respectively provided with a red organic light emitting diode, a green organic light emitting diode, a blue organic light emitting diode, and a white organic light emitting diode.

[0136] FIG. 5C illustrates an example of a circuit of a subpixel in the pixel of the panel of FIG. 5A or FIG. 5B.

[0137] Referring to FIG. 5C, a subpixel circuit CRTm, which is an active type, can include a scan switching element SW1, a storage capacitor Cst, a driving switching element SW2, and an organic light emitting layer OLED.

[0138] The scan switching element SW1 is connected at its gate terminal to a scan line and is turned on according to a scan signal Vdscan input thereto. When turned on, the scan switching element SW1 transfers the input data signal Vdata to the gate terminal of the driving switching element SW2 or one end of the storage capacitor Cst.

[0139] The storage capacitor Cst is provided between the gate terminal and the source terminal of the driving switching element SW2, and stores a predetermined difference between a data signal level transmitted to one end of the storage capacitor Cst and a DC voltage (VDD) level transmitted to the other end of the storage capacitor Cst.

[0140] For example, when the data signal has different levels according to a pulse amplitude modulation (PAM) scheme, the power level stored in the storage capacitor Cst varies according to the level difference of the data signal Vdata.

[0141] In another example, when the data signal has different pulse widths according to a pulse width modulation (PWM) scheme, the power level stored in the storage capacitor Cst varies according to the pulse width difference of the data signal Vdata.

[0142] The driving switching element SW2 is turned on according to the power level store in the storage capacitor Cst. When the driving switching element SW2 is turned on, a driving current IOLED proportional to the stored power level flows to the organic light emitting layer OLED. Accordingly, the organic light emitting layer OLED performs a light emitting operation.

[0143] The organic light emitting layer OLED includes a light emitting layer (EML) corresponding to a subpixel, and can include at least one of a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer (EIL). In addition, the organic light emitting layer OLED can include a hole blocking layer and the like.

[0144] In the figure, although p-type MOSFETs are illustrated as the scan switching element SW1 and the driving switching element SW2, n-type MOSFETs or other switching elements such as JFET, IGBT, or SIC can also be used.

[0145] Meanwhile, the pixel is a hold-type element that continuously emits light in the organic light emitting layer OLED during a unit display period, specifically during a unit frame, after a scan signal is applied.

[0146] Meanwhile, the subpixel circuit CRTm in the figure is driven by an active-matrix scheme.

[0147] FIG. 5D illustrates another example of a circuit of a subpixel in the pixel of the panel of FIG. 5A or FIG. 5B.

[0148] Referring to FIG. 5D, an organic light emitting subpixel circuit CRTm, which is a passive type, can include only an organic light emitting diode LED without any separate switching element.

[0149] As illustrated in FIG. 5D, the anode of the organic light emitting diode LED is connected to a data line to receive a data signal Vdata, and the cathode of the organic light emitting diode LED is connected to a scan line to receive a scan signal Vscan.

[0150] The organic light emitting diode can emit light or remain non-emissive based on a plurality of subframes according to a passive-matrix scheme.

[0151] Meanwhile, unlike FIG. 5D, the anode of the organic light emitting diode LED can be connected to a scan line to receive a scan signal Vscan, and the cathode of the organic light emitting diode LED can be connected to a data line to receive a data signal Vdata.

[0152] Meanwhile, the subpixel circuit CRTm in the figure is driven by a passive-matrix scheme.

[0153] FIG. 6 illustrates an example of an internal block diagram of a display apparatus for a vehicle related to the present disclosure.

[0154] Referring to FIG. 6, a display apparatus 100x for a vehicle (or simply referred to as "vehicle display apparatus") includes a signal processing device 170, a safety processor 186, a timing controller 232, and a panel 210.

[0155] The signal processing device 170 outputs a video signal, and the safety processor 186 receives the video signal and outputs the video signal and a signal corresponding to a vehicle warning (tell-tale) image.

[0156] The tell-tale image can include at least one of steering wheel information, battery information, ABS information, AFS information, airbag information, electronic parking brake information, Auto Hold information, door information, seat belt information, DPF (Diesel Particulate Filter) information, tail lamp information, low beam information, high beam information, and HDC (Hill Descent Control) information.

[0157] The timing controller 232 can receive the video signal and the signal corresponding to the tell-tale image, and can output a scan signal and a data signal to the panel 210.

[0158] Accordingly, an image corresponding to the video signal and the tell-tale image can be displayed on the panel 210.

[0159] Meanwhile, the signal processing device 170 and the safety processor 186 in the vehicle display apparatus 100x related to the present disclosure can be mounted on a first circuit board (not shown), and the timing controller 232 can be mounted on a second circuit board (not shown).

[0160] Accordingly, for transmission of the video signal and the signal corresponding to the tell-tale image, the safety processor 186 can convert them into low-voltage differential signaling (LVDS) signals and transmit the converted LVDS signals to the timing controller 232.

[0161] However, as the safety processor 186 and the timing controller 232 are spaced apart from each other, if the time controller 232 fails to receive a signal from the safety processor 186, an image or a tell-tale image cannot be displayed.

[0162] For example, when the safety processor 186 malfunctions or fails, a tell-tale image related to safety cannot be displayed on the panel 210, which causes a significant risk to vehicle safety.

[0163] Therefore, the present disclosure proposes a method for displaying a tell-tale image in a stable or reliable manner. This will be described with reference to FIG. 7 and subsequent figures.

[0164] FIG. 7 illustrates an example of an internal block diagram of a display apparatus for a vehicle according to an embodiment of the present disclosure.

[0165] Referring to FIG. 7, the vehicle display apparatus 100 according to an embodiment of the present disclosure includes an organic light emitting diode (OLED) panel 210 and a driving controller 285 that outputs a driving signal to the OLED panel 210.

[0166] The driving controller 285 outputs at least one tell-tale image to the OLED panel 210 by based on at least one tell-tale image stored in a memory 240.

[0167] Accordingly, it is possible to stably display the tell-tale image. In particular, as the tell-tale image can be output independently of a signal processing device 170, stable display of the tell-tale image is ensured.

[0168] The driving controller 285 can further include the memory 240 that stores at least one tell-tale image and a current detector 510 that detects a current flowing through the OLED panel 210.

[0169] Meanwhile, the at least one tell-tale image stored in the memory 240 can include a steering wheel information image, a battery information image, an ABS information image, an AFS information image, an airbag information image, an electronic parking brake (EPB) information image, and an Auto Hold information image.

[0170] Meanwhile, the vehicle display apparatus 100 of this embodiment can further include the signal processing device 170 that outputs a video signal.

[0171] When output of the video signal from the signal processing device 170 is interrupted, the driving controller 285 can output at least one tell-tale image and a predetermined image stored in the memory 240 to the OLED panel 210. Accordingly, it is possible to stably display at least one tell-tale image.

[0172] Meanwhile, the signal processing device 170 can output a video signal including a plurality of tell-tale images.

[0173] The driving controller 285 can receive the plurality of tell-tale images from the signal processing device 170, and can output the plurality of tell-tale images to the OLED panel 210, separately from the at least one tell-tale image. Accordingly, it is possible to display the plurality of tell-tale images.

[0174] At this time, the plurality of tell-tale images output from the signal processing device 170 can include a door information image, a seat belt information image, a DPF (Diesel Particulate Filter) information image, a tail lamp information image, a low beam information image, a high beam information image, and a HDC (Hill Descent Control) information image.

[0175] Meanwhile, when output of the video signal from the signal processing device 170 is interrupted, the driving controller 285 can output the at least one tell-tale image without outputting the plurality of tell-tale images. Accordingly, it is possible to stably display the tell-tale image.

[0176] Meanwhile, a safety level of the at least one tell-tale image output from the driving controller 285 can be greater than a safety level of the plurality of tell-tale images output from the signal processing device 170.

[0177] Accordingly, even when the signal output from the signal processing device 170 is interrupted due to a malfunction or failure of the signal processing device 170 or the like, it is possible to stably display at least one tell-tale image based on the driving controller 285.

[0178] FIG. 8A illustrates an example of an internal block diagram of a vehicle display apparatus according to another embodiment of the present disclosure.

[0179] Referring to FIG. 8A, a display apparatus 100b for a vehicle (or simply referred to as "vehicle display apparatus") according to another embodiment of the present disclosure includes, similarly to FIG. 7, an organic light emitting diode (OLED) panel 210 and a driving controller 285 that outputs a driving signal to the OLED panel 210. The driving controller 285 outputs at least one tell-tale image to the OLED panel 210 by based on at least one tell-tale image stored in a memory 240.

[0180] The vehicle display apparatus 100b of FIG. 8A differs from that of FIG. 7 in that the vehicle display apparatus 100b drives a plurality of displays 180a, 180b, and 180h.

[0181] To this end, the vehicle display apparatus 100b of this embodiment further includes an image distributor 177 configured to distribute an input video signal.

[0182] A first video signal distributed by the image distributor 177 is input to the driving controller 285, and a timing controller 232 in the driving controller 285 outputs a driving signal to the first display 180a including the OLED panel 210 based on the first video signal.

[0183] Meanwhile, the driving controller 285 outputs at least one tell-tale image to the first display 180a including the OLED panel 210 by based on at least one tell-tale image stored in the memory 240.

[0184] Meanwhile, the vehicle display apparatus 100b of this embodiment further includes a signal processing device 170 that outputs a video signal.

[0185] The signal processing device 170 can output a first video signal for the first display 180a, a second video signal for the second display 180b, and a third video signal for the third display 180h.

[0186] Meanwhile, for displaying a plurality of tell-tale images on the first display 180a, the signal processing device 170 can output a signal corresponding to the plurality of tell-tale images.

[0187] The signal corresponding to the plurality of tell-tale images can be input to the driving controller 285, and the driving controller 285 can control the plurality of tell-tale images to be displayed on the first display 180a based on the signal corresponding to the plurality of tell-tale images.

[0188] Meanwhile, a second video signal distributed by the image distributor 177 can be input to the second display 180b, and a third video signal distributed by the image distributor 177 can be input to the third display 180h.

[0189] Although a driving controller for the second display 180b and the third display 180h is not separately illustrated in the figure, a second driving controller (not shown) for the second display 180b and a third driving controller (not shown) for the third display 180h can be provided, similarly to the first display 180a.

[0190] Meanwhile, the second driving controller (not shown) for the second display 180b and the third driving controller (not shown) for the third display 180h can each use a memory therein to cause at least one tell-tale image to be displayed. Accordingly, it is possible to stably display at least one tell-tale image.

[0191] Alternatively, the tell-tale images for the second display 180b and the third display 180h can be output from the driving controller 285.

[0192] FIGS. 8B to 12Bare diagrams referred to in the description of FIGS. 7 and 8A.

[0193] FIG. 8B illustrates that a cluster image is displayed on the first display 180a based on the operation of the driving controller.

[0194] Referring to FIG. 8B, the driving controller 285 is disposed in a control circuit board CPB. The driving controller 285 can receive a video signal from the signal processing device 170, and can output a gate driving signal Sgaa, Sgab and a data signal Sda based on the video signal.

[0195] A driver Dra, Drb, Drc in a source circuit board SPB can receive the gate driving signal Sgaaa, Sgab and the data signal Sda from the driving controller 285, and can control a cluster image 900 to be displayed on the first display 180a based on the gate driving signal Sgaaa, Sgab and the data signal Sda.

[0196] FIG. 9A illustrates a cluster image 900.

[0197] Referring to FIG. 9A, the cluster image 900 can include vehicle speed information, driving information, vehicle temperature information, and the like.

[0198] In addition, the cluster image 900 can include a plurality of tell-tale images.

[0199] FIG. 9B illustrates that at least one tell-tale image from the driving controller 285 and a plurality of tell-tale images from the signal processing device 170 are distinguished and displayed within a cluster image.

[0200] Referring to FIG. 9B, tell-tale images within the cluster image 900 can be divided into at least one tell-tale image from the driving controller 285 and a plurality of tell-tale images from the signal processing device 170.

[0201] The at least one tell-tale image from the driving controller 285 can include a steering wheel information image 911, a battery information image 912, an ABS information image 913, an AFS information image 914, an airbag information image 915, an ESP (Electronic Stability Program) OFF information image 916, an ESP information image 917, an EPB (Electronic Parking Brake) information image 918, and an Auto Hold information image 919.

[0202] The plurality of tell-tale images from the signal processing device 170 can include a door information image 1011, a seat belt information image 1012, an engine information image 1013, a DPF (Diesel Particulate Filter) information image 1014, a four-wheel drive information image 1015, a tail lamp information image 1016, a low beam information image 1017, a high beam information image 1018, a HDC (Hill Descent Control) information image 1114, and an SOS information image 1112.

[0203] Meanwhile, a safety level of the at least one tell-tale image from the driving controller 285 can be greater than a safety level of the plurality of tell-tale images from the signal processing device 170. Accordingly, it is possible to stably display at least one tell-tale image.

[0204] Meanwhile, when the various tell-tale images of FIG. 9B are displayed on the OLED panel 210, degradation due to burn-in can occur. Therefore, the present disclosure also describes degradation determination or degradation compensation of various tell-tale images.

[0205] FIG. 10A illustrates an example of a character within a tell-tale image.

[0206] In the figure, although the character 'a' is illustrated in the tell-tale image, other characters such as 'A' in the ABS information image 913, the AFS information image 914, or the Auto Hold information image 919 can also be used.

[0207] Meanwhile, the driving controller 285 displays a tell-tale image on the cluster image 900, as shown in FIG. 9, and thus performs alpha blending on at least a portion of the tell-tale image to display the tell-tale image in a transparent or semi-transparent manner.

[0208] (a) of FIG. 10A illustrates a portion 1010 of the tell-tale image before alpha blending, and (b) of FIG. 10A illustrates a portion 1015 of the tell-tale image after alpha blending.

[0209] By the alpha blending, a transparency of the portion 1015 of the tell-tale image becomes greater than that of the portion 1010 of the tell-tale image.

[0210] FIG. 10B illustrates another example of a character within a tell-tale image.

[0211] In the figure, an 'S' is illustrated as the character in the tell-tale image. Here, the 'S' can be a character in the SOS information image 1112 of FIG. 9B.

[0212] A tell-tale image 1020 of FIG. 10B is an image subjected to alpha blending, with an area 1022 appearing as an opaque area and another area 1024 appearing as a transparent area.

[0213] Meanwhile, the driving controller 285 can perform degradation determination on at least one tell-tale image from the driving controller 285 or a plurality of tell-tale images from the signal processing device 170, and can perform degradation compensation when degradation is determined.

[0214] Meanwhile, when an alpha blending area is included in a first tell-tale image among at least one tell-tale image or a plurality of tell-tale images, the driving controller 285 can perform degradation determination excluding the alpha blending area.

[0215] For example, the driving controller 285 can perform degradation determination based on the opaque area 1022 or the like while excluding the transparent area 1024, which corresponds to the alpha blending area in the tell-tale image 1020 of FIG. 10B.

[0216] Specifically, in pixel counting for degradation determination, the driving controller 285 can perform degradation determination based on the opaque area 1022 while excluding the transparent area 1024 corresponding to the alpha blending area.

[0217] Meanwhile, the driving controller 285 can include a current detector 510 that detects a current flowing through the OLED panel 210, and can determine degradation of a tell-tale image based on the current detected by the current detector 510.

[0218] Meanwhile, when determining determination of at least one tell-tale image from the driving controller 285 or a plurality of tell-tale images from the signal processing device 170, the driving controller 85 can perform degradation determination based on a shape of the tell-tale image, and can perform degradation compensation corresponding to the shape of the tell-tale image.

[0219] For example, when determining degradation of at least one tell-tale image from the driving controller 285 or a plurality of tell-tale images from the signal processing device 170, the driving controller 285 can perform degradation determination based on a shape of the tell-tale image, rather than performing degradation determination based on a square block within the tell-tale image. Accordingly, more accurate degradation determination is ensured.

[0220] In another example, when determining degradation of at least one tell-tale image from the driving controller 285 or a plurality of tell-tale images from the signal processing device 170, the driving controller 285 can perform degradation determination based on pixels of the tell-tale image, and can perform degradation compensation on the pixels of the tell-tale image. Accordingly, it is possible to prevent degradation of the tell-tale image.

[0221] Meanwhile, the driving controller 285 can detect a check bit added to at least one tell-tale image from the driving controller 285 or a plurality of tell-tale images from the signal processing device 170, can perform degradation determination on the tell-tale image based on the check bit, and can perform degradation compensation on pixels of the tell-tale image based on the degradation determination.

[0222] FIG. 10C illustrates that a check bit is added to a partial area of a tell-tale image.

[0223] As shown in (a) of FIG. 10C, a check bit PTa can be added to any one area of a tell-tale image 1032, and the driving controller 285 can detect whether the check bit PTa in the tell-tale image 1032 has changed.

[0224] For example, the driving controller 285 can determine that degradation has occurred upon a change in the check bit PTa, and can perform degradation compensation.

[0225] Meanwhile, as shown in (b) of FIC. 10C, check bits PT1 to PT4 can be respectively added to a plurality of areas of a tell-tale image 1034, and the driving controller 285 can detect whether the check bits PT1 to PT4 in the tell-tale image 1034 have changed.

[0226] For example, the driving controller 285 can determine that degradation has occurred upon a change in the check bits PT1 to PT4, and can perform degradation compensation.

[0227] Meanwhile, when an alpha blending area is included in a first tell-tale image among at least one tell-tale image, the driving controller 285 can check degradation of the alpha blending area based on a mask layer corresponding to the alpha blending area, and can perform degradation compensation based on a result of the degradation check. This will be described with reference to FIG. 11A and subsequent figures.

[0228] FIG. 11A illustrates an example of performing degradation determination on an alpha blending area within a tell-tale image.

[0229] Referring to the figure, (a) of FIG. 11Acan be an SOS information image 1050, which is a tell-tale image provided by the signal processing device 170.

[0230] Since the 'S' character in the SOS information image 1050 includes a curved area, it is divided into a transparent area 1024 and an opaque area 1022 by alpha blending, as shown in FIG. 10B.

[0231] As described above, the opaque area 1022 can be counted when determining degradation, whereas the transparent area 1024 cannot be counted.

[0232] However, since degradation can also occur in the transparent area 1024, the present disclosure uses a mask layer 1055, such as that shown in (b) of FIG. 11A, to determine degradation of the transparent area 1024.

[0233] The mask layer 1055 can cover an entire area of the 'SOS' character.

[0234] The driving controller 285 can superimpose the mask layer 1055 on a tell-tale image 1060 of (c) of FIG. 11A.

[0235] Then, the driving controller 285 can check degradation based on a superimposed image 1065, as shown in (d) of FIG. 11A.

[0236] Accordingly, the driving controller 285 can perform counting for the transparent area in the tell-tale image.

[0237] Meanwhile, when an alpha blending area is included in a first tell-tale image among at least one tell-tale image, the driving controller 285 can perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area.

[0238] Meanwhile, when alpha blending values for respective colors of the alpha blending area are different, the driving controller 285 can differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area.

[0239] For example, upon degradation compensation, the driving controller 285 can perform luminance compensation for red, orange, and green.

[0240] Specifically, upon degradation compensation, the driving controller 285 can control luminance compensation values for red, orange, and green to differ from one another.

[0241] Meanwhile, when alpha blending values for respective colors of the alpha blending area are different, the driving controller 285 can control luminance compensation values for red, orange, and green of the alpha blending area to differ from one another. Accordingly, it is possible to prevent degradation of the tell-tale image.

[0242] FIG. 11B illustrates a screen 1110 including a plurality of tell-tale images.

[0243] Referring to 11B, the screen 1110 can include a battery information image 912 and an AFS information image 914, which are at least one tell-tale image from the driving controller 285.

[0244] Meanwhile, the screen 1110 can include an SOS information image 1112 and a HDC (Hill Descent Control) information image 1114, which are a plurality of tell-tale images from the signal processing device 170.

[0245] The driving controller 285 can perform degradation determination on the battery information image 912 and the AFS information image 914, which are at least one tell-tale image from the driving controller 285, based on the method of FIG. 11Aor the like.

[0246] Alternatively, the driving controller 285 can perform degradation determination on the SOS information image 1112 and the HDC (Hill Descent Control) information image 1114, which are a plurality of tell-tale images from the signal processing device 170, based on the method of FIG. 11A or the like.

[0247] FIG. 11C illustrates an example of a tell-tale image after degradation compensation.

[0248] Referring to the figure, (a) of FIG. 11C illustrates an image 1120 including a plurality of tell-tale images 922, 924, 1122, and 1124 that have been subjected to degradation compensation based on the plurality of tell-tale images 912, 914, 1112, and 1114 of FIG. 11B.

[0249] The driving controller 285 can perform degradation compensation by shifting only the plurality of tell-tale images 922, 924, 1122, and 1124 within the image 1120.

[0250] For example, the driving controller 285 can perform pixel shifting, first axis line shifting, or second axis line shifting only on the plurality of tell-tale images 922, 924, 1122, and 1124 within the image 1120.

[0251] (b) of FIG. 11C illustrates a cluster image 1130 including speed information and the like.

[0252] Meanwhile, as shown in (c) of FIG. 11C, the driving controller 285 can control the plurality of degradation-compensated tell-tale images 922, 924, 1122, and 1124 to be superimposed on a cluster image 1140. Accordingly, it is possible to display the degradation-compensated tell-tale images.

[0253] FIG. 11D illustrates various examples of degradation compensation.

[0254] Referring to the figure, the driving controller 285 can perform pixel shifting of a tell-tale image as shown in (a) of FIG. 11D, can perform first axis (y axis) line shifting of the tell-tale image as shown in (b) of FIG. 11D, or can perform second axis (x axis) line shifting of the tell-tale image as shown in (c) of FIG. 11D.

[0255] Specifically, the driving controller 285 can perform degradation compensation on at least one tell-tale image from the driving controller 285 to perform pixel shifting or line shifting on the at least one tell-tale image or can change luminance of the at least one tell-tale image. Accordingly, it is possible to stably display the at least one tell-tale image while preventing degradation of the tell-tale image.

[0256] Meanwhile, the driving controller 285 can perform degradation compensation on a plurality of tell-tale images from the signal processing device 170, and can perform pixel shifting or line shifting on the plurality of tell-tale images or can change luminance of the plurality of tell-tale images. Accordingly, it is possible to stably display the plurality of tell-tale images while preventing degradation of the tell-tale images.

[0257] FIG. 12A illustrates various displays of a cluster image.

[0258] As shown in (a) of FIG. 12A, the driving controller 285 can control a cluster image 1210 including a plurality of tell-tale images 912 and 914, vehicle speed information 1211, and vehicle driving information 1212 to be displayed on the OLED panel 210.

[0259] In this case, the plurality of tell-tale images 912 and 914 are generated based on the memory 240 in the driving controller 285, and the vehicle speed information 1211 and vehicle driving information 1212 can be generated based on a video signal received from the signal processing device 170.

[0260] Meanwhile, in a case where the plurality of tell-tale images 912 and 914 are received from the signal processing device 170, when the signal processing device 170 malfunctions or fails, a black image 1220 with no information displayed, as shown in (b) of FIG. 12A, is displayed on the OLED panel 210.

[0261] In such a case, it can cause a serious safety issue during vehicle driving.

[0262] Therefore, in the present disclosure, as described above, safety-related tell-tale images 912 and 914 are generated and output by the driving controller 285, rather than by the signal processing device 170.

[0263] Meanwhile, the memory 240 in the driving controller 285 can temporarily store vehicle speed information, a background screen, and the like received from the signal processing device 170.

[0264] Accordingly, even when the signal processing device 170 malfunctions or fails, the driving controller 285 can control a cluster image 1230 including tell-tale images 912 and 914 related to safety, vehicle speed information 1211, a background screen, and the like to be displayed, as shown in (c) of FIG. 12A. Thus, even when the signal processing device 170 malfunctions or fails, it is possible to stably display the tell-tale images and the like.

[0265] However, the cluster image 1230 cannot include certain information, such as vehicle driving information 1212, and an area for displaying the vehicle driving information can be displayed as a black area 1232.

[0266] FIG. 12B illustrates a cluster image including safety information.

[0267] Referring to 12B, the driving controller 285 can control safety status information to be displayed in a partial area (BLa, BLb) of the cluster image according to a vehicle state.

[0268] In the figure, safety status information is displayed in both end areas BLa and BLb, which are partial areas of the cluster image.

[0269] For example, the driving controller 285 can control the end areas BLa and BLb to be displayed in green when the vehicle state is a safe state, in yellow or orange when the vehicle state requires caution, and in red when the vehicle state is a warning state.

[0270] This allows a driver to intuitively recognize the vehicle state.

[0271] It will be apparent that, although the preferred embodiments have been shown and described above, the present disclosure is not limited to the above-described specific embodiments, and various modifications and variations can be made by those skilled in the art without departing from the gist of the appended claims. Thus, it is intended that the modifications and variations should not be understood independently of the technical spirit or prospect of the present disclosure.

Examples

Embodiment Construction

[0048]Hereinafter, the present disclosure will be described in detail with reference to the accompanying drawings.

[0049]With respect to constituent elements used in the following description, suffixes "module" and "unit" are given only in consideration of ease in preparation of the specification, and do not have or serve different meanings. Accordingly, the suffixes "module" and "unit" can be used interchangeably.

[0050]FIG. 1 illustrates an example of the exterior and interior of a vehicle.

[0051]Referring to FIG.1, a vehicle 200 can include a plurality of wheels 103FR, 103FL, 103RL, ... rotated by a power source and a steering wheel 150 for adjusting a traveling direction of the vehicle 200.

[0052]The vehicle 200 can further include a camera 195 for acquiring an image of the front of the vehicle.

[0053]The vehicle 200 can further include therein a plurality of displays 180a, 180b, and 180h for displaying images, information, and the like.

[0054]For example, among the plurality of displ...

Claims

1. A display apparatus for a vehicle, the display apparatus comprising: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to output, based on at least one tell-tale image stored in a memory, the at least one tell-tale image to the OLED panel.

2. The display apparatus of claim 1, wherein the driving controller is configured to: receive a plurality of tell-tale images from a signal processing device; and output the plurality of tell-tale images to the OLED panel separately from the at least one tell-tale image.

3. The display apparatus of claim 1, wherein the driving controller is configured to perform degradation compensation on the at least one tell-tale image.

4. The display apparatus of claim 1, wherein in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, the driving controller is configured to: check degradation of the alpha blending area based on a mask layer corresponding to the alpha blending area; and perform determination compensation based on a result of the degradation check.

5. The display apparatus of claim 1, wherein in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, the driving controller is configured to perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area.

6. The display apparatus of claim 5, wherein in response to alpha blending values for the respective colors of the alpha blending area being different, the driving controller is configured to differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area.

7. The display apparatus of claim 1, wherein, upon determination of degradation of the at least one tell-tale image, the driving controller is configured to perform pixel shifting, first axis line shifting, or second axis line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image.

8. The display apparatus of claim 1, wherein the driving controller comprises a current detector configured to detect a current flows through the OLED panel, wherein the driving controller is configured to: determine degradation of the at least one tell-tale image based on the current detected by the current detector; and upon determination of degradation of the at least one tell-tale image, perform pixel shifting, first axis line shifting, or second axis line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image.

9. The display apparatus of claim 1, wherein, upon determination of degradation of the at least one tell-tale image, the driving controller is configured to: perform degradation determination based on a shape of the at least one tell-tale image; and perform degradation compensation corresponding to the shape of the at least one tell-tale image.

10. The display apparatus of claim 1, wherein, upon determination of degradation of the at least one tell-tale image, the driving controller is configured to: perform degradation determination based on a pixel of the at least one tell-tale image; and perform degradation compensation on the pixel of the at least one tell-tale image.

11. The display apparatus of claim 1, wherein the driving controller is configured to: detect a check bit added to the at least one tell-tale image; perform degradation determination on the at least one tell-tale image based on the check bit; and perform degradation compensation on a pixel of the at least one tell-tale image based on a result of the degradation determination.

12. The display apparatus of claim 1, further comprising a signal processing device configured to output a video signal, wherein in response to output of the video signal from the signal processing device being interrupted, the driving controller is configured to output the at least one tell-tale image and a predetermined image stored in the memory to the OLED panel.

13. The display apparatus of claim 1, wherein the signal processing device is configured to output a video signal including a plurality of tell-tale images, and wherein in response to output of the video signal from the signal processing device being interrupted, the driving controller is configured to output the at least one tell-tale image without outputting the plurality of tell-tale images.

14. The display apparatus of claim 2, wherein a safety level of the at least one tell-tale image is greater than a safety level of the plurality of tell-tale images.

15. A display apparatus for a vehicle, the display apparatus comprising: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to the OLED panel, wherein the driving controller is configured to: output at least one tell-tale image to the OLED panel; and perform degradation compensation on the at least one tell-tale image to perform pixel shifting or line shifting on the at least one tell-tale image or change luminance of the at least one tell-tale image.

16. The display apparatus of claim 15, wherein the driving controller is configured to: receive a plurality of tell-tale images from a signal processing device; and output the plurality of tell-tale images to the OLED panel separately from the at least one tell-tale image.

17. The display apparatus of claim 16, wherein the driving controller is configured to perform degradation compensation on the plurality of tell-tale images to perform pixel shifting or line shifting on the plurality of tell-tale images or change luminance of the plurality of tell-tale images.

18. A display apparatus for a vehicle, the display apparatus comprising: an organic light emitting diode (OLED) panel; and a driving controller configured to output a driving signal to OLED panel, wherein the driving controller is configured to: output at least one tell-tale image to the OLED panel; and in response to an alpha blending area being included in a first tell-tale image among the at least one tell-tale image, perform luminance compensation of respective colors of the alpha blending area upon degradation compensation of the alpha blending area.

19. The display apparatus of claim 18, wherein in response to alpha blending values for the respective colors of the alpha blending area being different, the driving controller is configured to differentiate luminance compensation values for the respective colors of the alpha blending area from one another upon degradation compensation of the alpha blending area.

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