Display device

Abstract

A display device according to an embodiment of the present disclosure includes a main board, an OLED module that transmits a signal including a defect signal to the main board, a power board that supplies power received from an external power source to the display device, and an indicator. When the main board receives the defect signal, it cuts off the power supplied by the power board to the OLED module and outputs an OLED module defect notification through the indicator to inform that there is a defect in the OLED module.

Description

[Technical Field]

[0001] The present disclosure relates to a display device, and more particularly, to a display device for enabling a user to easily identify the cause of a defect.[Background Art]

[0002] In recent years, various types of display devices have emerged. Among them, organic light emitting diode display devices (hereinafter referred to as "OLED display devices") have been widely used. Since an OLED display device is a self-luminous device, it has the advantage of lower power consumption and thinner construction compared to liquid crystal display devices that require a backlight. In addition, OLED display devices have a wide viewing angle and fast response time.

[0003] A typical organic light emitting diode display device includes red (R), green (G), and blue (B) sub-pixels as a single unit pixel, and displays one image of various colors through three sub-pixels.

[0004] When a still image is displayed for a long period of time, the cumulative light emission time among pixels differs, resulting in a difference in the current light emission capability among pixels.

[0005] As a result, when the display is switched from a still image displayed over a long period of time to another image, the viewer sees an image in which the afterimage of the previous image is combined with the new image, causing inconvenience to the user's viewing experience.

[0006] To prevent such problems, when a display device detects a defect in the OLED module, it stops supplying power to the OLED module and initiates a screen protection operation. As the screen protection operation is initiated, image display on the display may be suspended.

[0007] However, the cause of image display suspension on the display may be attributable to defects in other components or to causes other than the screen protection operation. Furthermore, since no image is displayed on the display, it may be difficult to obtain information related to the defect through the screen. Therefore, it may be difficult for a user to determine the cause of the image display suspension on the display.

[0008] Accordingly, the user must contact a service provider and describe the defect symptom in detail in order to receive an OLED module replacement service, and there is inconvenience caused by requiring multiple visits from the service provider.[Disclosure][Technical Problem]

[0009] The present disclosure aims to prevent damage to the OLED module by suspending the output of the display while at the same time enabling a user or service provider to intuitively identify that a defect has occurred in the OLED module.[Technical Solution]

[0010] A display device according to an embodiment of the present disclosure includes a main board, an OLED module that transmits a signal including a defect signal to the main board, a power board that supplies power received from an external power source to the display device, and an indicator. When the main board receives the defect signal, it cuts off the power supplied by the power board to the OLED module and outputs an OLED module defect notification through the indicator to inform that there is a defect in the OLED module.

[0011] The indicator of the display device according to an embodiment of the present disclosure is an LED lamp, and when the main board receives the defect signal, it may switch the display device to a standby mode.

[0012] The display device according to an embodiment of the present disclosure may output the OLED module defect notification by blinking the LED lamp in a blinking pattern corresponding to the OLED module defect.

[0013] The display device according to an embodiment of the present disclosure may output the OLED module defect notification starting from a point in time when a preset period of time has elapsed from the point in time when the display device is powered on.

[0014] The preset period of time may be longer than the time during which the LED lamp outputs a power-on notification.

[0015] The indicator of the display device according to an embodiment of the present disclosure is a speaker, and the main board may output a voice message corresponding to the OLED module defect as the OLED module defect notification.

[0016] The voice message output by the display device according to an embodiment of the present disclosure may include a message for guiding the user on how to request service.

[0017] The display device according to an embodiment of the present disclosure may output the OLED module defect notification a preset number of times.

[0018] The display device according to an embodiment of the present disclosure may output the OLED module defect notification through the speaker when a user input to turn on the display device is received while the display device is in a powered-off state.

[0019] The display device according to an embodiment of the present disclosure may, when disconnected from the external power source and then reconnected, determine whether a defect signal is received from the OLED module, and if a defect signal is received, output the OLED module defect notification.[Advantageous Effects]

[0020] According to embodiments of the present disclosure, a defect in the OLED module can be confirmed while the output of the display is suspended and the power consumption of the display device is minimized.

[0021] According to embodiments of the present disclosure, a defect in the OLED module can be clearly notified while the output of the display is suspended.

[0022] According to embodiments of the present disclosure, by intuitively notifying a defect in the OLED module, the service replacement process can be simplified.[Description of Drawings]

[0023] FIG. 1 is a flowchart illustrating the process by which a user receives a component replacement service from a service provider. FIG. 2 is a diagram illustrating the configuration of a display device according to an embodiment of the present disclosure. FIG. 3 is a ladder diagram illustrating the operation of the display device according to an embodiment of the present disclosure when a defect occurs in the OLED module. FIG. 4 is an example of a defect signal transmitted from the OLED module of the present disclosure to the main board. FIG. 5 is a diagram illustrating an operation in which the main board according to an embodiment of the present disclosure cuts off power supplied to the OLED module and the power board. FIG. 6 is a diagram illustrating a display device according to an embodiment of the present disclosure outputting an OLED module defect notification through an LED lamp. FIG. 7 is a diagram illustrating an example of an OLED module defect notification output by the LED lamp according to an embodiment of the present disclosure. FIG. 8 is a diagram illustrating a display device according to an embodiment of the present disclosure outputting an OLED module defect notification through a speaker. FIG. 9 is a flowchart illustrating the process by which a user according to an embodiment of the present disclosure receives a component replacement service from a service provider. [Mode for Invention]

[0024] Hereinafter, embodiments related to the present disclosure will be described in detail with reference to the drawings. The suffixes "module" and "unit" for components used in the following description are given or used interchangeably solely for ease of writing the specification, and do not in themselves have distinct meanings or functions from each other.

[0025] Hereinafter, the display device according to an embodiment of the present disclosure may include an organic light emitting diode display device.

[0026] First, referring to FIG. 1, the process by which a user receives a component replacement service from a service provider will be described in detail.

[0027] FIG. 1 is a flowchart illustrating the process by which a user receives a component replacement service from a service provider.

[0028] First, a user 300 may recognize a defect in the display device (S1).

[0029] The user 300 who has recognized the defect in the display device may request a diagnosis and repair service from a service provider 400 by means of the Internet, mobile, telephone, or the like (S2).

[0030] The service provider 400 may refer to the manufacturer of the display device or any company that provides diagnosis and repair services.

[0031] The service provider 400 may receive the service request and assign a service representative and a diagnosis schedule (S3).

[0032] The service provider 400 may receive service requests through various methods such as the Internet, mobile, or telephone.

[0033] The service provider 400 may provide remote service (S4).

[0034] The service provider 400 may confirm the specific symptoms of the display device in detail through remote service, or may resolve simple defect issues.

[0035] Alternatively, the service provider 400 may place a call to the user 300 to check the symptoms of the display device (S5) and hear an explanation of the symptoms from the user 300 (S6).

[0036] For example, the service provider 400 may place a Service Management Call (SM Call) to the user 300 to hear an explanation of the symptoms.

[0037] Thereafter, the service provider 400 may determine, based on the explanation of the symptoms, whether to visit the location where the display device is installed, such as the home of the user 300 (S7).

[0038] If the service provider 400 determines that the user 300 can resolve the defect in the display device on their own without replacing components, the service provider 400 may explain the problem resolution method to the user 300 (S8).

[0039] However, if the service provider 400 determines that a detailed diagnosis of the display device is necessary, the service provider 400 may make a field visit to the location where the display device is installed.

[0040] The service provider 400 may visit the location where the display device is installed and hear the explanation of the symptoms from the user 300 again (S9).

[0041] The service provider 400 may perform a diagnosis of the display device with reference to the explanation of the symptoms.

[0042] The service provider 400 may determine through diagnosis whether component replacement is necessary (S10).

[0043] If the service provider 400 determines that component replacement is not necessary, it may provide the user 300 with an explanation of the problem resolution method (S8).

[0044] On the other hand, if the service provider 400 determines that component replacement is necessary, it may order the component from an external supplier. Next, once the ordered component is secured, the service provider 400 may bring the component and visit the location where the display device is installed again (S11). The service provider 400 may then replace the component to complete the service (S12).

[0045] According to the service process as in FIG. 2, the user 300 has the inconvenience of having to explain the defect symptoms or complaints multiple times to the service provider 400. Additionally, the service provider 400 has the inconvenience of having to visit the location where the display device is installed multiple times when component replacement is required.

[0046] Accordingly, the display device 100 according to an embodiment of the present disclosure aims to simplify the process for the user 300 to receive a component replacement service and to minimize the number of visits by the service provider 400.

[0047] In particular, the display device according to an embodiment of the present disclosure, when the component requiring replacement is the OLED module, aims to enable the user 300 or the service provider 400 to intuitively recognize that a defect has occurred in the OLED module.

[0048] First, the configuration of the display device according to an embodiment of the present disclosure will be described with reference to FIG. 2.

[0049] FIG. 2 is a diagram illustrating the configuration of a display device according to an embodiment of the present disclosure.

[0050] Referring to FIG. 2, the display device 100 may include an OLED module 110, a main board 120, a power board 130, and an indicator 140.

[0051] The OLED module 110 may include a display panel 111, a four-color data converter 112, a timing controller 113, a gate driver 114, a data driver 115, and a memory 116.

[0052] The display panel 111 may include a plurality of sub-pixels (SP). The plurality of sub-pixels may be formed in pixel regions defined by a plurality of gate lines (GL) and a plurality of data lines (DL) that intersect each other.

[0053] The display panel 111 has a plurality of driving power lines (PL) formed in parallel with each of the plurality of data lines (DL) to supply driving voltage.

[0054] Each of the plurality of sub-pixels may be one of a red sub-pixel (Red Sub-Pixel), a green sub-pixel (Green Sub-pixel), a blue sub-pixel (Blue Sub-pixel), and a white sub-pixel (White Sub-pixel).

[0055] One unit pixel displaying one image may include a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel.

[0056] Each of the plurality of sub-pixels (SP) may include an organic light emitting device (OLED) and a pixel circuit (PC).

[0057] The organic light emitting device (OLED) is connected between the pixel circuit (PC) and the driving power line (PL2), and emits light in proportion to the amount of data current supplied from the pixel circuit (PC) to emit a predetermined color of light.

[0058] To this end, the organic light emitting device (OLED) may include an anode electrode (or pixel electrode) connected to the pixel circuit (PC), a cathode electrode (or reflective electrode) connected to the driving power line (PL2), and a light emitting cell formed between the anode electrode and the cathode electrode that emits light of one of red, green, blue, and white colors.

[0059] The light emitting cell may be formed to have a structure of a hole transport layer / organic light emitting layer / electron transport layer, or a structure of a hole injection layer / hole transport layer / organic light emitting layer / electron transport layer / electron injection layer.

[0060] A functional layer for improving at least one of the luminous efficiency or lifetime of the organic light emitting layer may be additionally formed in the light emitting cell.

[0061] The pixel circuit (PC) supplies to the organic light emitting device (OLED) a data current corresponding to the data voltage (Vdata) supplied to the data line (DL) from the data driver 115, in response to the gate signal (GS) at a gate-on voltage level supplied to the gate line (GL) from the gate driver 114.

[0062] The data voltage (Vdata) has a voltage value in which the degradation characteristics of the organic light emitting device (OLED) are compensated.

[0063] The pixel circuit (PC) includes a switching transistor, a driving transistor, and at least one capacitor, which are formed on a substrate by a thin-film transistor formation process.

[0064] The switching transistor and the driving transistor may be a-Si TFTs, poly-Si TFTs, Oxide TFTs, Organic TFTs, or the like.

[0065] The switching transistor may supply the data voltage (Vdata) supplied to the data line (DL) to the gate electrode of the driving transistor according to the gate signal at the gate-on voltage level supplied to the gate line.

[0066] The driving transistor may be turned on according to the gate-source voltage including the data voltage (Vdata) supplied from the switching transistor, thereby controlling the amount of current flowing from the driving voltage line (PL1) to the organic light emitting device (OLED).

[0067] The four-color data converter 112 may generate data to be provided to the unit pixel of the display panel 111 based on a timing synchronization signal (TSS) and red, green, and blue three-color input data (Ri, Gi, Bi) input from an external system body (not shown) or a graphics card (not shown).

[0068] The four-color data converter 112 may generate four-color data (R, G, B, W) of red, green, blue, and white to be supplied to each of the red sub-pixel, the green sub-pixel, the blue sub-pixel, and the white sub-pixel constituting the unit pixel, based on the timing synchronization signal (TSS) and the three-color input data (Ri, Gi, Bi).

[0069] The generated four-color data (R, G, B, W) may be provided to the timing controller 113.

[0070] The four-color data converter 112 may further include a filter (not shown). The filter may remove noise from the three-color input data.

[0071] For example, the filter may perform filtering on the grayscale level of each of red data, green data, and blue data to remove noise from the three-color input data. The filter may filter one or more of the red data, green data, and blue data.

[0072] The four-color data converter 112 may be included in the timing controller 113.

[0073] The timing controller 113 may control the driving timing of each of the gate driver 114 and the data driver 115 based on the timing synchronization signal (TSS) input from an external system body (not shown) or a graphics card (not shown).

[0074] The timing controller 113 may generate a gate control signal (GCS) and a data control signal (DCS) based on timing synchronization signals (TSS) such as a vertical synchronization signal, a horizontal synchronization signal, a data enable signal, and a dot clock.

[0075] The timing controller 113 may control the driving timing of the gate driver 114 through the gate control signal (GCS), and may control the driving timing of the data driver 115 through the data control signal (DCS) in synchronization therewith.

[0076] The timing controller 113 may accumulate the data (R, G, B, W) of each sub-pixel (SP) supplied from the four-color data converter 112 on a per sub-pixel (SP) basis every frame or at a set accumulation period, and store the accumulated data in the memory 116.

[0077] The gate driver 114 may generate a gate signal (GS) corresponding to the display order of images based on the gate control signal (GCS) provided from the timing controller 113, and supply the generated gate signal (GS) to the corresponding gate line (GL).

[0078] The gate driver 114 may be configured in the form of a plurality of integrated circuits (ICs), or may be directly formed on the substrate of the display panel 111 together with the transistor formation process of each sub-pixel (SP), and connected to one or both sides of each of the plurality of gate lines (GL).

[0079] The data driver 115 may receive pixel data (DATA) and the data control signal (DCS) from the timing controller 113.

[0080] The data driver 115 may receive a plurality of reference gamma voltages from an external reference gamma voltage supply unit (not shown).

[0081] The data driver 115 may convert the pixel data (DATA) into an analog data voltage (Vdata) based on the data control signal (DCS) and the plurality of reference gamma voltages.

[0082] The data driver 115 may supply the converted data voltage (Vdata) to the data line (DL) of the corresponding sub-pixel (SP). Accordingly, each unit pixel constituting the display panel 111 may display a predetermined image by causing the organic light emitting device (OLED) to emit light based on the data current corresponding to the data voltage (Vdata) supplied to each sub-pixel (SP).

[0083] Each unit pixel may be driven with only three sub-pixels including the white sub-pixel among the red, green, blue, and white sub-pixels, or all four sub-pixels may be driven.

[0084] The data driver 115 may be formed in the form of a plurality of integrated circuits (ICs) and connected to one or both sides of the data line (DL).

[0085] The timing controller 113 may control the operations of the four-color data converter 112, the gate driver 114, the data driver 115, and the memory 116.

[0086] Meanwhile, the display device 100 shown in FIG. 1 is merely one embodiment of the present disclosure, and some of the illustrated components may be integrated, added, or omitted according to the specifications of the display device 100 to be actually implemented.

[0087] For example, the four-color data converter 112 and the timing controller 113 may be configured as one controller, or the four-color data converter 112, the timing controller 113, the gate driver 114, and the data driver 115 may be configured as one controller (not shown).

[0088] The main board 120 may control the overall operation of the display device 100.

[0089] The main board 120 may control the operations of the display panel 111, the four-color data converter 112, the timing controller 113, the gate driver 114, the data driver 115, and the memory 116.

[0090] In another example, the main board 120 may not be separately provided, and a configuration including the four-color data converter 112, the timing controller 113, the gate driver 114, and the data driver 115 may perform the role of the main board.

[0091] The power board 130 may supply power to the components or configurations of the display device 100 including the OLED module 110. The power board 130 may include a power supply circuit (not shown).

[0092] The indicator 140 may output notifications related to the state of the display device 100. The indicator 140 may include some or all of the LED lamp 141 and the speaker 142.

[0093] Meanwhile, as the display device 100 is used, certain pixels or sub-pixels may degrade, and an afterimage may be displayed on the display panel 111.

[0094] This is because the luminous capability of a pixel is affected by the accumulated luminous amount of the pixel due to the material limitations of the pixel.

[0095] To prevent such problems, the display device 100 may initiate a screen protection operation when pixel degradation is detected. For example, the screen protection operation may be a BDP (Burnt Detect Protection) operation.

[0096] The screen protection operation may be an operation of stopping the power supply to the OLED module 110 to prevent further pixel degradation. Accordingly, the light emission of the pixel is also stopped, and no image may be displayed on the display panel 111.

[0097] Since no image is displayed on the display panel 111, the user 300 or the service provider 400 may not be able to obtain information related to the cause of the defect through the display.

[0098] Accordingly, the display device 100 according to an embodiment of the present disclosure aims to provide information related to the cause of the defect through the indicator 140.

[0099] Specifically, when the OLED module 110 defect is the cause, the display device aims to notify this through the indicator 140.

[0100] The display device 100 according to an embodiment of the present disclosure may include a main board 120, an OLED module 110 that transmits a signal including a defect signal to the main board 120, a power board 130 that supplies power received from an external power source (not shown) to the display device 100, and an indicator 140. Furthermore, when the main board 120 receives the defect signal, it cuts off the power supplied by the power board 130 to the OLED module 110, and may output an OLED module defect notification through the indicator 140 to inform that there is a defect in the OLED module 110.

[0101] In relation thereto, a detailed description will be given with reference to FIG. 3.

[0102] FIG. 3 is a ladder diagram illustrating the operation of the display device according to an embodiment of the present disclosure when a defect occurs in the OLED module.

[0103] First, when a defect occurs in the OLED module 110 (S111), the OLED module 110 may transmit a defect signal to the main board 120 (S113).

[0104] The OLED module 110 may transmit a signal to the main board 120 according to its state. When a defect occurs in the OLED module 110, the OLED module 110 may transmit a signal including a defect signal to the main board 120.

[0105] The defect signal may be a signal commonly included in the signal transmitted to the main board 120 when a defect occurs in the OLED module 110.

[0106] The defect signal may be a screen protection operation signal. The screen protection operation signal may be an operation for performing a BDP (Burnt Detect Protection) function.

[0107] The defect signal may be Low-High-Low as illustrated in FIG. 4, but this is merely an example.

[0108] Continuing, FIG. 3 will be described.

[0109] When the main board 120 receives the defect signal (S115), it may transmit a power supply cutoff signal to the power board 130 (S117).

[0110] The power supply cutoff signal may be a signal for cutting off the power supplied by the power board 130 to the OLED module 110.

[0111] The power board 130 may switch the power mode of the display device 100 to a standby mode (S119).

[0112] The power board 130 may switch the power mode of the display device 100 to a standby mode by cutting off or minimizing the power supplied to the components or configurations of the display device 100 including the power board 130 itself. The standby mode may be a mode in which power consumption is minimized, similar to when the display device 100 is powered off.

[0113] As the power board 130 stops supplying power to the OLED module 110 (S121), the screen protection operation of the OLED module 110 may be initiated (S123).

[0114] In relation to steps S117 through S123, a description will be given with reference to FIG. 5.

[0115] FIG. 5 is a diagram illustrating an operation in which the main board according to an embodiment of the present disclosure cuts off power supplied to the OLED module and the power board.

[0116] First, the main board 120 may transmit a power supply cutoff signal to the power board 130 to cut off the power supplied to the OLED module 110.

[0117] Furthermore, the main board 120 may minimize the power consumed by the power board 130 to switch the power mode of the display device 100 to a standby mode.

[0118] However, if the indicator 140 that outputs the OLED module defect notification is not the LED lamp 141, the power board 130 may not switch the power mode of the display device 100 to standby mode. This is because the LED lamp 141 can output notifications with only standby power, whereas the speaker 142 must consume power greater than standby power to output notifications.

[0119] Again, FIG. 3 will be described.

[0120] The main board 120 may output the OLED module defect notification through the indicator 140 (S125).

[0121] The OLED module defect notification may be a notification for informing that a defect has occurred in the OLED module. The indicator 140 may be some or all of the LED lamp 141 and the speaker 142. The OLED module defect notification may be output through some or all of the LED lamp 141 and the speaker 142.

[0122] The OLED module defect notification output through the LED lamp 141 will be described with reference to FIGS. 6 and 7.

[0123] FIG. 6 is a diagram illustrating a display device according to an embodiment of the present disclosure outputting an OLED module defect notification through an LED lamp.

[0124] The main board 120 may output the OLED module defect notification through the LED lamp 141 while power supply to the OLED module 110 is suspended.

[0125] Since the LED lamp 141 is a separate component from the OLED module 110, it can operate even when power supply to the OLED module 110 is cut off.

[0126] Furthermore, the LED lamp 141 consumes little power, so it can operate even when the display device 100 has switched to standby mode. Therefore, when the OLED module defect notification is output through the LED lamp 141, the OLED module defect notification can be output while the power consumption of the display device 100 is minimized.

[0127] Meanwhile, the OLED module defect notification may be blinking of the LED lamp 141. Specifically, the LED lamp 141 may blink in a blinking pattern corresponding to the OLED module defect to output the OLED module defect notification.

[0128] In relation thereto, a description will be given with reference to FIG. 7.

[0129] FIG. 7 is a diagram illustrating an example of an OLED module defect notification output by the LED lamp according to an embodiment of the present disclosure.

[0130] The main board 120 may detect BDP upon receiving a defect signal from the OLED module 110. The main board 120 detecting BDP may mean that it has received a defect signal from the OLED module 110.

[0131] When the main board 120 receives a defect signal from the OLED module 110, it may output the OLED module defect notification through the LED lamp 141.

[0132] The LED lamp 141 may blink in a blinking pattern corresponding to the OLED module defect to output the OLED module defect notification.

[0133] As illustrated, the blinking pattern corresponding to the OLED module defect may be a pattern of blinking three times at one-second intervals and then remaining off for approximately three seconds, repeated. However, the blinking pattern corresponding to the OLED module defect may vary according to the embodiment.

[0134] The blinking pattern corresponding to the OLED module defect may be a pattern preset by the manufacturer of the display device 100. Therefore, if the service provider 400 is the manufacturer or has been provided with information related to the blinking pattern by the manufacturer, the failure of the OLED module 110 can be confirmed from the blinking pattern output by the LED lamp 141 alone.

[0135] The LED lamp 141 may output the OLED module defect notification until the connection with the external power source (e.g., AC power) is terminated. The LED lamp 141 is operable with standby power alone. That is, the LED lamp 141 may output the OLED module defect notification even when the display device 100 is in standby mode.

[0136] Meanwhile, the main board 120 may output the OLED module defect notification through the LED lamp 141 starting from a point in time when a preset period of time has elapsed from the point in time when the defect signal is received from the OLED module 110. The preset period of time may be 30 seconds, but this is merely an example.

[0137] The preset period of time may be set in consideration of the time during which another notification is output through the LED lamp 141.

[0138] For example, when the LED lamp 141 receives a user input to power on the display device 100, it may output a power-on notification informing that the display device 100 has been powered on. The power-on notification may be output with a blinking pattern in which the LED lamp 141 blinks six times at two-second intervals. At this time, the LED lamp 141 may output the power-on notification for 10 seconds from the point in time when the display device 100 is powered on.

[0139] However, there may be cases where the main board 120 receives a defect signal from the OLED module 110 simultaneously with the powering on of the display device 100. In this case, if the OLED module defect notification is output from the point in time when the display device 100 is powered on, the OLED module defect notification and the power-on notification may be output simultaneously, making it difficult to determine which notification is being output.

[0140] Therefore, the display device 100 according to an embodiment of the present disclosure may output the OLED module defect notification after a preset period of time has elapsed from the point in time when the main board 120 receives the defect signal, in order to prevent confusion between other notifications output through the LED lamp 141 and the OLED module defect notification. The preset period of time may be set to be longer than the time during which the LED lamp 141 outputs the power-on notification.

[0141] Next, the operation of the display device 100 according to an embodiment of the present disclosure for outputting an OLED module defect notification through the speaker 142 will be described in detail with reference to FIG. 8.

[0142] FIG. 8 is a diagram illustrating a display device according to an embodiment of the present disclosure outputting an OLED module defect notification through a speaker.

[0143] Referring to FIG. 8, the display device 100 according to an embodiment of the present disclosure may output the OLED module defect notification not only through the LED lamp 141 but also through the speaker 142.

[0144] The speaker 142 may output the OLED module defect notification based on voice data corresponding to the defect of the OLED module 110. The voice data may be data prestored in the display device 100 as data corresponding to the defect of the OLED module 110. Alternatively, the voice data may be data received from an external server (not shown) as data corresponding to the defect of the OLED module 110.

[0145] The OLED module defect notification output through the speaker 142 may be a voice message. The component defect notification output through the speaker 142 may include information about the defective component. In addition, the component defect notification output through the speaker 142 may include a message for guiding the service request method.

[0146] For example, the OLED module defect notification output through the speaker 142 may be a voice message such as, "An abnormality has occurred in the display area and it is not functioning normally. Please contact your nearest service center." However, the specific message output through the speaker 142 may vary depending on the embodiment.

[0147] In order for the main board 120 to output the OLED module defect notification through the speaker 142, the display device 100 may not switch its power mode to standby mode. Accordingly, it requires more power consumption than when outputting the OLED module defect notification through the LED lamp 141, but notification content can be output more specifically through a voice message.

[0148] Meanwhile, the main board 120 may output the OLED module defect notification through the speaker 142 when a user input to control the display device 100 is received. For example, when the main board 120 receives a user input to turn on the display device 100 while the display device is in a powered-off state, it may output the OLED module defect notification through the speaker 142.

[0149] This is because the presence of a user input means that the user intends to use the display device 100, and the speaker 142 is used to inform the user of the reason why no image is displayed on the display panel 111. Additionally, if there is no user input for a long period of time, notifications are not output through the speaker 142 in order to minimize user inconvenience.

[0150] According to an embodiment, the main board 120 may output the OLED module defect notification through the speaker 142 a preset number of times. The preset number of times may be set as the number of times to repeat the output in consideration of the case where the user 300 has not properly heard the voice message.

[0151] Furthermore, if the notification output through the speaker 142 continues, it may be more disruptive to the user 300 than when the notification output through the LED lamp 141 continues. Therefore, the main board 120 may minimize user inconvenience by stopping the notification output after outputting the OLED module defect notification through the speaker 142 a preset number of times.

[0152] FIG. 9 is a flowchart illustrating the process by which a user according to an embodiment of the present disclosure receives a component replacement service from a service provider.

[0153] The user 300 may recognize a defect in the display device 100 (S21).

[0154] The user 300 may recognize the defect in the display device 100 upon the occurrence of symptoms such as no image being displayed on the display panel 111.

[0155] The user 300 who has recognized the defect in the display device 100 may request service from the service provider 400 (S22).

[0156] The service provider 400 may receive and assign the service request (S23), and may check whether the component defect notification is being output through the indicator 140 (S24).

[0157] For example, the service provider 400 may ask the user 300 what the blinking pattern of the LED lamp 141 is.

[0158] If the indicator 140 is not outputting a notification, or is outputting a notification different from the component defect notification, the service provider 400 may provide a field service to determine which component is defective (S25).

[0159] On the other hand, if the service provider 400 confirms that the indicator 140 is outputting the component defect notification, it may bring the relevant component and visit the location where the display device 100 is installed.

[0160] For example, if the blinking pattern of the LED lamp 141 is identical to the blinking pattern corresponding to the OLED module defect, the service provider 400 may bring the OLED module 110 and visit the location where the display device 100 is installed.

[0161] Specifically, if the user 300 responds that the LED lamp 141 is blinking three times at one-second intervals repeatedly, the service provider 400 may determine that the indicator 140 is outputting the OLED module defect notification. Accordingly, the service provider 400 may determine that replacement of the OLED module 110 is necessary, and may visit the home of the user with the OLED module 110.

[0162] Next, the service provider 400 may replace the OLED module 120 to complete the service (S26).

[0163] Comparing FIGS. 1 and 9, it can be confirmed that the process of FIG. 9 is simpler. The process of FIG. 9 may require fewer explanations from the user 300 and less content necessary for those explanations compared to FIG. 1. Furthermore, the process of FIG. 9 may require fewer visits by the service provider 400 to the location where the display device 100 is installed compared to FIG. 1.

[0164] That is, according to the operation of the display device according to an embodiment of the present disclosure, the service provider 400 can easily determine whether to provide an OLED module replacement service, thereby simplifying the service provision procedure.

[0165] Meanwhile, the display device 100 according to an embodiment of the present disclosure may be disconnected from the external power source for replacement of the OLED module 110, and then reconnected to the external power source after the OLED module 110 has been replaced.

[0166] When the display device 100 is disconnected from the external power source and then reconnected, it may determine whether a defect signal is received from the OLED module, and if a defect signal is received, output the OLED module defect notification.

[0167] Accordingly, whether the defect problem of the OLED module 110 has been resolved can be easily identified.

[0168] According to an embodiment of the present disclosure, the method described above may be implemented as code readable by a processor on a medium on which a program is recorded. Examples of media readable by a processor include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage devices, and the like.

Claims

1. A display device, comprising: a main board; an OLED module that transmits a signal including a defect signal to the main board; a power board that supplies power received from an external power source to the display device; and an indicator, wherein the main board cuts off power supplied by the power board to the OLED module upon receiving the defect signal, and outputs an OLED module defect notification through the indicator to inform that there is a defect in the OLED module.

2. The display device of claim 1, wherein the indicator is an LED lamp, and the main board switches the display device to a standby mode upon receiving the defect signal.

3. The display device of claim 2, wherein the main board outputs the OLED module defect notification by blinking the LED lamp in a blinking pattern corresponding to the defect of the OLED module.

4. The display device of claim 3, wherein the main board outputs the OLED module defect notification starting from a point in time when a preset period of time has elapsed from a point in time when the display device is powered on.

5. The display device of claim 4, wherein the preset period of time is longer than a time during which the LED lamp outputs a power-on notification.

6. The display device of claim 1, wherein the indicator is a speaker, and the main board outputs a voice message corresponding to the defect of the OLED module as the OLED module defect notification.

7. The display device of claim 6, wherein the voice message includes a message for guiding a user on how to request service.

8. The display device of claim 6, wherein the main board outputs the OLED module defect notification a preset number of times.

9. The display device of claim 6, wherein the main board outputs the OLED module defect notification through the speaker when a user input to turn on the display device is received while the display device is in a powered-off state.

10. The display device of claim 1, wherein the main board, when disconnected from the external power source and then reconnected, determines whether the defect signal is received from the OLED module, and outputs the OLED module defect notification upon receiving the defect signal.

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