WO2022014847A1

WO2022014847A1 - Display device having defect test function and test method thereof

Info

Publication number: WO2022014847A1
Application number: PCT/KR2021/006343
Authority: WO
Inventors: 이건영
Original assignee: 삼성전자주식회사
Priority date: 2020-07-17
Filing date: 2021-05-21
Publication date: 2022-01-20
Also published as: KR20220010281A

Abstract

A display device having a defect test function is disclosed. The display device comprises: a display including a display panel and a touch sensor; a memory in which a test image and software operating according to a touch signal provided from the touch sensor are stored; and a processor, wherein the processor provides, when a mode for testing a software defect is executed, a virtual touch signal corresponding to the test image to the software to generate an image corresponding to the virtual touch signal, and compares the generated image and the test image to determine whether a software defect occurs.

Description

Display device having defect test function and test method therefor

The present invention relates to a display device having a failure test function and a test method therefor.

Recently, refrigerators with displays, touch-enabled electronic boards, and smartphones are increasingly used. After manufacturing such a display device, in a shipping process, a person goes through a process of individually checking whether the display device is defective. However, there are cases where defects are missed due to lack of accuracy and efficiency of work. Also, when a problem occurs, it is difficult to distinguish whether the touch sensor (hardware) of the display is defective or the software is defective, so that the entire display panel must be replaced. Accordingly, there is a need for a method capable of more efficiently testing a defect of a display device.

SUMMARY OF THE INVENTION The present invention has been devised in response to the above needs, and an object of the present invention is to provide a display device having a function of more efficiently testing a defect and a test method therefor.

A display device according to an embodiment of the present invention for achieving the above object includes a display including a display panel and a touch sensor, a memory storing software and test images operating according to a touch signal provided from the touch sensor, and a processor, wherein when the mode for testing the software defect is executed, a virtual touch signal corresponding to the test image is provided to the software to generate an image corresponding to the virtual touch signal, By comparing the generated image and the test image, it is possible to determine whether the software is defective.

Here, the virtual touch signal may be a signal generated to define a touch position, a touch time, and a touch type input to display the test image on the display panel.

In addition, when a mode for testing the failure of the touch sensor is executed, the test image is displayed on the display panel, and when a user touch operation is performed according to the test image, the touch sensor is detected for the user touch operation A defect of the touch sensor may be tested based on the result and the test image.

Here, the processor displays a touch trace image on the display panel according to a detection result of the touch sensor for the user's touch manipulation, compares the touch trace image and the test image, and according to a matching rate between images, the touch You can test the sensor for defects.

Here, the test image is an image including a plurality of grids each having data values based on a preset pattern, and the processor is configured to include coordinates of each grid included in the test image and a data value of each grid The virtual touch signal defining a touch time and touch type is generated and provided to the software, and when an image corresponding to the virtual touch signal is generated by the software, the generated image and the test image correspond to each other By comparing each lattice unit, a ratio of lattices having matching data values is calculated, and based on the ratio, it is possible to determine whether the software is defective.

Also, the processor may display software update information on the display when the software is identified as defective.

Here, further comprising a communication unit for communicating with an external server, the processor, when the software is identified as defective, may transmit information about the software defect to the external server through the communication unit.

Here, further comprising an interface for communicating with a plurality of external display devices, wherein the processor includes images transmitted to the plurality of external display devices, images received from the plurality of external display devices, and the test pre-stored in the memory By comparing images, communication performance with the plurality of external display devices may be tested according to a matching rate between the images.

Also, the processor may continuously monitor the image-to-image matching rate, and if the image-to-image matching rate is less than a threshold ratio, an error message may be displayed on the display.

Here, the processor is configured to: When at least one of a condition for booting the display device, a condition for terminating playback of the content being reproduced on the display device, a condition for playing the next content, and a condition for repeatedly playing the content, is satisfied can test the communication performance with an external display device.

Meanwhile, in the test method according to an embodiment of the present invention, when the mode for testing the software failure is executed, generating a virtual touch signal corresponding to the test image stored in the display device, the software It may include generating an image according to a virtual touch signal, and determining whether the software is defective by comparing the generated image with the test image.

Here, the virtual touch signal may be a signal generated to define a touch position, a touch time, and a touch type input to display the test image on the display device.

In addition, when the mode for testing the failure of the touch sensor is executed, the test image is displayed, and when a user touch operation is performed according to the test image, the detection result of the touch sensor for the user touch operation and the test The method may further include testing a defect of the touch sensor based on the image.

Here, the step of testing the failure of the touch sensor includes displaying a touch trace image according to a detection result of the touch sensor for the user touch manipulation, comparing the touch trace image with the test image, and matching rate between images The method may further include testing for a defect of the touch sensor.

Here, the test image is an image including a plurality of grids each having data values based on a preset pattern, and the step of determining whether the software is defective may include comparing the generated image and the test image to corresponding grids. The method may include comparing units, calculating a ratio of grids having matching data values, and determining whether the software is defective based on the ratio.

Here, when it is identified that the software is defective, the method may further include displaying software update information.

In addition, when the software is identified as defective, the method may further include transmitting information about the software defect to an external server.

Here, by comparing an image transmitted to a plurality of external display apparatuses and an image received from the plurality of external display apparatuses with the test image previously stored in the memory, communication performance with the plurality of external display apparatuses according to a matching rate between the images It may further include the step of testing.

Here, the method may further include continuously monitoring the image-to-image matching rate and displaying an error message when the image-to-image matching rate is less than a threshold ratio.

Here, the testing of the communication performance with the plurality of external display devices includes: a condition in which the display device is booted, a condition in which reproduction of the content being reproduced in the display device is terminated, a condition in which the next content is reproduced, and repeated reproduction are performed. It may be performed whenever at least one of the conditions to be performed is satisfied.

According to various embodiments as described above, it is possible to more easily and efficiently test whether the display system is defective and its cause.

1 is a block diagram illustrating a configuration of a display apparatus according to an embodiment of the present disclosure.

2 is a diagram for explaining an example of a test image.

3 is a diagram for explaining a process of generating a virtual touch signal.

4 is a diagram for explaining a process of comparing an image generated by a virtual touch signal with a test image.

5 is a diagram for explaining an example of a method for testing a touch sensor for failure.

6 is a diagram for explaining an example of a processing method according to a test result.

7 is a view for explaining another example of a processing method according to a test result.

8 is a diagram for explaining a method of testing data transmission/reception performance between a plurality of display devices;

9 is a view for explaining an example of a processing method according to the test result of FIG. 8 .

10 is a flowchart illustrating a test method according to an embodiment of the present invention.

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Terms used in this specification will be briefly described first.

The terms used in this specification have been selected as currently widely used general terms as possible, which may vary depending on the intention or precedent of a person skilled in the art, the emergence of new technology, and the like. In addition, in a specific case, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the corresponding disclosure. Therefore, the terms used in the present disclosure should be defined based on the meaning of the term and the contents of the present disclosure, rather than the simple name of the term.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The expression "at least one of A and/or B" is to be understood as indicating either "A" or "B" or "A and B".

A component (eg, a first component) is "coupled with/to (operatively or communicatively)" to another component (eg, a second component); When referring to "connected to", it should be understood that an element may be directly connected to another element or may be connected through another element (eg, a third element).

The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as "comprises" or "consisting of" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other It should be understood that this does not preclude the possibility of addition or presence of features or numbers, steps, operations, components, parts, or combinations thereof.

In the present disclosure, a “module” or “unit” performs at least one function or operation, and may be implemented as hardware or software, or a combination of hardware and software. In addition, a plurality of “modules” or a plurality of “units” may be integrated into at least one module and implemented by at least one processor, except for “modules” or “units” that need to be implemented with specific hardware.

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present disclosure pertains can easily implement them. However, the present disclosure may be implemented in several different forms and is not limited to the embodiments described herein. And in order to clearly explain the present disclosure in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

1 is a block diagram illustrating a configuration of a display apparatus according to an embodiment of the present disclosure. The display device 100 refers to an electronic device having a display. Specifically, the display device 100 includes a TV, a monitor, a laptop PC, a mobile phone, a PDA, a kiosk, and a video wall, as well as various types of home appliances such as a refrigerator, a washing machine, and an air conditioner provided with the display 130 . It can also be implemented as a product. Referring to FIG. 1 , a display apparatus 100 includes a processor 110 , a memory 120 , and a display 130 .

The processor 110 is a component provided to perform an overall operation or some functions of the display apparatus 100 . The processor 110 includes a digital signal processor (DSP), a microprocessor, a central processing unit (CPU), a micro controller unit (MCU), a micro processing unit (MPU), a controller ( controller), an application processor (application processor (AP)), etc., may be named variously, but in the present specification, it is referred to as the processor 110. The processor 110 is a system on chip (SoC), large scale integration (LSI), etc. It may be implemented in the form of a field programmable gate array (FPGA) or implemented in the form of a field programmable gate array (FPGA). The memory 120 is a component in which various software or data necessary for the operation of the display device are stored. Although only one is illustrated, the memory 120 may be implemented as a combination of at least one or more of various memories such as a non-volatile memory such as UVEPROM or EEPROM, or a volatile memory.

The memory 120 may store a test image used to test software failure and touch sensor failure. In addition, software for displaying the user's touch sensed by the touch sensor may be stored in the memory 120 . Information stored in the memory 120 may be stored during manufacturing of the display device, may be downloaded later, or may be updated from time to time from an external source.

The display 130 is a component for displaying images, various information, menus, and the like. The display 130 includes a display panel 131 for displaying various information or menus, and a touch sensor 132 for sensing a touch on the display panel 131 . The touch sensor 132 may be manufactured separately from the display panel 131 and disposed on the upper or lower portion of the display panel 131 , or may be implemented in a form embedded in the display panel 131 . Because it includes a touch sensor 132 , the display 130 may alternatively be referred to as a touch screen.

When the display 130 is implemented as a touch screen, the user can control the home appliances provided with the display device according to the UI displayed on the display 130 . In the case of a refrigerator, a user may manipulate functions of the refrigerator by directly touching while viewing various information or menus displayed on the display 130 . The touch sensor 132 provides a signal corresponding to the location touched by the user, the size of the touch area, etc. to the processor 110 , and the processor 110 performs an operation corresponding to the signal.

Meanwhile, before manufacturing and shipping the display device 100 , it is necessary to check whether there is a defect in the touch sensing operation or the display operation of the display 130 . The causes of these defects can be divided into two main categories.

The first is a case in which the touch sensor 132 provided in the display 130 is defective. When the touch sensor 132 is defective, the user's touch point may be incorrectly recognized. Accordingly, even when the processor 110 operates normally, a touch effect different from that intended by the user occurs. For example, an error may occur, such as an attempt to lower the temperature of the refrigerator compartment, but an increase in the temperature of the refrigerator compartment due to a defective touch sensor. In this case, the touch sensor 132 or the display 130 may need to be replaced.

Second, it can be assumed that the touch sensor operates normally, but there is a defect in the software performing a function according to the touch signal.

In this case, since the touch sensor operates normally, the coordinates of the touch point on the display according to the user's input are accurately transmitted to the processor 110 . However, due to a problem in software stored in the memory 120 , the processor 110 may not perform a special operation or may perform an operation different from the user's intention. It is not easy to distinguish such a defect in a method that a user directly touches and tests as in the present. That is, even if the user recognizes that a touch event occurs at a point having a coordinate different from the coordinates input by the user, it is not possible to determine whether the touch sensor is defective or the software is defective.

The processor 110 may test the display apparatus 100 for defects in various aspects. Specifically, a defect in software, a defect in a touch sensor, a defect in a data transmission/reception process with an external display device, etc. may be tested. Each test can be implemented in a different mode so that the user can selectively perform it. Alternatively, only one mode may be applied to each product. Hereinafter, a case in which the user performs the test under various modes will be described in detail.

When the mode for testing software failure is executed, the processor 110 provides a virtual touch signal corresponding to the test image stored in the memory 120 to the software. The virtual touch signal means a signal generated by the processor 110 itself, not a signal that is actually detected and output by the touch sensor. The processor 110 may generate, as a virtual touch signal, a signal defining a touch position, a touch time, and a touch type required to display a test image on the display panel. For example, if the user touches the point a of the display panel 131 and performs a touch manipulation by dragging the point to the point b within t time, the normal touch sensor 132 detects this and outputs a touch signal. The processor 110 provides the touch signal to the software stored in the memory 120 as an input, and displays an image drawn from the point a to the point b within t time on the display panel 131 . At this time, if the drawn image is a test image, the touch signal input at this time may be a virtual touch signal.

Examples of the test image and the virtual touch signal will be described in detail with reference to FIGS. 2 and 3 .

The software generates an image corresponding thereto based on the virtual touch signal provided from the processor 110 .

The processor 110 compares the image generated by the software with the test image to determine whether the software is defective. Specifically, the processor 110 compares the generated image and the test image for each corresponding part to check whether they match, and then determines whether the software is defective if they do not match by a certain percentage or more.

In the case of generating a virtual touch signal, since input is made regardless of the touch sensor defect, if the image is not displayed normally in this situation, the processor 110 may determine that the touch sensor is not defective but software is defective. have.

Separately, a mode for testing the failure of the touch sensor may be executed. In this case, the processor 110 displays the test image on the display 130 . The user may perform a touch operation according to the test image. That is, when the test image is displayed in the form of a line, the user may touch one end of the line and then drag along the line. The processor 110 may identify a failure of the touch sensor by comparing the detection result of the touch sensor for the user's touch manipulation with the test image.

Specifically, whether the coordinates of the point where the user's touch manipulation is performed coincide with the coordinates of the point where the test image is displayed is determined for each pixel or region. As a result of the determination, if the matching rate is equal to or greater than a certain ratio, the processor 110 determines that the touch sensor 132 is normal, and if it is less than the predetermined ratio, it is determined that the touch sensor 132 is defective.

According to another embodiment, the display apparatus 100 may provide a UI related to a poor touch test. That is, the processor 110 may display the touch trace image on the display according to the detection result of the touch sensor for the user's touch manipulation in the mode for testing the failure of the touch sensor. In this case, if the touch sensor 132 is defective, the touch trace image may be displayed at a point different from the coordinates input by the touch, or the touch trace image may not be displayed at all. The user can immediately check whether his or her touch operation is properly detected with the naked eye.

The mode for determining whether the touch sensor is defective and the mode for determining whether the software is defective may be individually performed according to embodiments, but may be applied together regardless of the order.

Meanwhile, the test image may be provided in various forms according to embodiments.

2 is a view for explaining a test image according to an embodiment of the present disclosure. When the entire display screen is divided into a plurality of grids, some grids 210 having data values among them constitute the test image 200 . In the example of FIG. 2 , it can be seen that the test image 200 is an image of a pattern connected in two diagonal directions with upper, lower, left, and right edges with respect to the display screen.

The test image 200 of FIG. 2 is only an example of an image that can be used when inspecting whether a touch is defective during shipment, and thus is not limited thereto, and may be provided in various forms. The test pattern may have a bmp format in that it is an image of a simple pattern divided in a grid form. In addition, it may be an image file such as jpeg or png.

One grid on the test image 200 may be implemented to have horizontal and vertical lengths greater than the user's finger diameter, but is not limited thereto.

When the test image is a grid-shaped image, it is possible to prevent a problem in that the display device is recognized as a defect due to a difference between minute touch points even though the display device is operating normally. In addition, it has the advantage of reducing the burden of data processing so that the processor can perform a failure test more quickly.

The processor 110 generates a virtual touch signal defining the coordinates of each grid included in the test image, a touch time corresponding to a data value of each grid, and a touch type, and provides the virtual touch signal to the software, and provides the virtual touch signal corresponding to the virtual touch signal. When the image is generated by software, the generated image and the test image are compared in grid units corresponding to each other, the ratio of grids having matching data values is calculated, and based on the ratio, it is possible to determine whether the software is defective. have.

As a result of the software failure test, if the processor 110 identifies that the software is defective, feedback suggesting a software update may be provided to the user through the display 130 .

If the software is defective, it is highly likely that the software of the same version for the same type of product as well as the product that was tested for software failure is defective, so it is necessary to notify the manufacturer of this. In this case, the display apparatus 100 may transmit information about software defects to an external server through the communication unit. This will be described in detail with reference to FIG. 6 .

The display device is not limited to using only one set. A single display wall may be configured by bonding several display devices. In this case, since an error may occur in a data transmission/reception process between display devices, a mode for testing this may be prepared. This will be described in detail with reference to FIG. 8 .

3 is a diagram for explaining generation of a virtual touch signal according to an embodiment of the present disclosure.

The operating system of the display device is composed of a kernel that controls hardware, a library, an application executive environment (AEE), a UI framework, and the like. Among them, the kernel is a program for controlling specific hardware or devices.

The kernel may include a Board Support Package (BSP). BSP is a set of software that allows you to use the Board. It consists of a bootloader for loading an operating system, an OEM adaptation layer (OAL) that performs hardware management functions, and a device driver, a program that operates as a part of the kernel to control specific hardware.

An error may also occur in the process in which the kernel receives and processes the sensed data from the touch sensor 132 . However, since a process of generating a touch event by receiving a virtual touch signal will be described in FIG. 3 , the above problem is not discussed.

The processor 110 may generate a virtual touch signal corresponding to the test image stored in the memory 120 . The virtual touch signal is a signal generated to generate the same effect as if the user did not actually input a touch through the touch screen, but as if there is a touch by the user.

When the processor 110 generates a corresponding signal, a script language such as Shell Script may be used, and for example, matrix-type data such as [touch x-coordinate, touch y-coordinate, data value] is included in the virtual touch signal. can do it

In the process of testing software defects, a virtual touch signal is generated in order to exclude a case where there is a problem in the detection of the touch sensor, and through this, a software defect is tested on the premise that there is a touch corresponding to the test image. be able to do

The virtual touch signal may define a touch position, a touch time, and a touch type for displaying a test image. In the process of testing software defects, only information on the touch position may be included.

The kernel to which the virtual touch signal is input generates an image corresponding to the virtual touch signal by driving a function.

Referring to FIG. 3 , it can be seen that a virtual touch signal corresponding to the coordinates of each grid included in the test image 200 is generated, and an image corresponding thereto is generated by software. The generated image and the test image may be different due to a software defect, which will be described in detail in the description of FIG. 4 .

4 is a view for explaining a process of comparing an image generated according to a virtual touch signal and a test image according to an embodiment of the present disclosure.

When the software generates the image 410 corresponding to the virtual touch signal, the processor 110 compares the generated image with the test image 420 .

It can be seen that the image 410 corresponding to the virtual touch signal matches the test image with respect to the upper grids, but is different from the test image 420 in the arrangement of the vertical grids.

This is a problem that can be caused by errors occurring in software, especially in the kernel. When a function is run in the kernel, the function itself may contain code that does not match the grid characteristics of the test image. For example, the test image has a lattice structure of 6 by 6, and codes may be configured based on the lattice structure corresponding to 5 by 6 in the function. In this case, as shown in FIG. 4 , the first left column may not have data values, and an error may occur in which data in the first left column is moved to the second left column.

Errors that may occur in the software are not limited to the above cases. Even if a function composed of code that matches the grid characteristics of the test image is driven, various errors occur when the function is running, so an image different from the test image may be created, and errors may also occur in the UI Framework, not the kernel.

The processor 110 compares the image corresponding to the virtual touch signal and the test image 420 in grid units corresponding to each other, and calculates a ratio of grids having matching data values in the number of all grids for each image.

The processor 110 may use a library such as Open CV in calculating the corresponding ratio. Open CV is a library that focuses on real-time image processing, and is cross-platform that can be used on operating systems such as Windows and Linux.

Based on the calculated ratio, the processor may determine whether the software is defective. When the calculated ratio is not 100%, it can be generally determined that there is a defect in the software.

5 is a diagram for explaining a touch sensor failure test according to an embodiment of the present disclosure.

In addition to testing the software for failure, the user can run a mode for testing the touch sensor for failure. When the mode for testing the failure of the touch sensor is executed, the processor 110 displays the test image stored in the memory 120 on the display panel 131 . The user performs a touch manipulation 510 according to the displayed test image.

In FIG. 5 , touch events are displayed on the grid on the display panel 131 based on the touch coordinates sensed by the touch sensor 132 , but it is not necessarily displayed as such, and data detected by the touch sensor and It can also be implemented by comparing test images.

Referring to FIG. 5 , the user performed a touch manipulation 510 to drag a row at the bottom of the test image, but it is confirmed that one grid 511 of the data sensed by the touch sensor does not match the user's touch manipulation can

When the grid 511 that does not match the test image is present, the processor may determine that the touch sensor is defective. Of course, in this case as well, the inconsistency grid 511 can be identified using a library such as Open CV as in the software failure test.

Alternatively, the touch trace may be displayed on the display panel so that the user can intuitively feel that a touch defect is occurring. 6 is a diagram for explaining provision of software update information according to another embodiment of the present disclosure. Referring to FIG. 6 , the display apparatus 100 may further include a communication unit 140 in addition to the processor 110 , the memory 120 , and the display 130 .

Communication unit 140 is WIFI, Zigbee (zigbee), 3G (3rd Generation), 3GPP (3rd Generation Partnership Project), LTE (Long Term Evolution), LTE-A (LTE Advanced), 4G (4th Generation), 5G (5th) Generation) and the like, communication can be performed using various wireless communication methods or various wired communication methods.

As a result of executing the software failure test mode, when it is determined that the software is defective, the processor 110 provides the software update related information screen 600 through the display 130 . The user may perform a software update 611 by checking the software update notification window 610 . When the user selects the update 611 menu, the processor 110 accesses the server 10 through the communication unit 140 to download and update new software. The server 10 may be a server operated by a software developer or a manufacturer of the display device 100 , but is not limited thereto, and may be various application stores.

However, since the software is already defective, even if the user touches the update button 611 and the cancel button 612 , a desired operation may not be performed. In preparation for this case, the display device may further include a voice recognition sensor, and the processor 110 may determine whether to update from the user's utterance sensed through the voice recognition sensor and perform the update.

Since the software of a specific product is defective, and immediately after users start to check for such defects, the manufacturer cannot provide an update for the software, at this time, the update button 612 is disabled and a notification is displayed to the user can do.

In FIG. 6 , a case in which the user selects the update menu to update the software has been described, but when a software defect is confirmed, the processor 110 automatically sends the defect information to the server 10 through the communication unit 140 without a separate user operation. You can also send it.

7 is a diagram for explaining provision of feedback regarding a failure of a touch sensor according to an embodiment of the present disclosure.

As described in FIG. 5 , when the touch sensor is identified as defective, the processor may display a warning message 710 informing the user of the failure of the touch sensor. If the touch sensor is defective, the software update is useless, so a notification is provided so that you can visit a service center to replace the display panel.

As shown in FIG. 8 , a plurality of display devices 100 - 1 to 100 - n may be combined to configure one display wall 800 . 8 shows a combined system in a 4*4 form, the number and arrangement of the devices may be variously modified. Each display device may have different configurations, but in FIG. 8 , it is assumed that all display devices have the same configuration.

According to FIG. 8 , one display device 100 constituting the display wall 800 includes a processor 110 , a memory 120 , a display 130 , and an interface 150 . The interface 150 is configured to communicate with other peripheral devices, that is, a plurality of external display devices. The interface 150 may be implemented as a wired or wireless interface.

When a plurality of display devices reproduce one content, each display device displays an image portion corresponding to one area of the content. Content, other information, control signals, and the like are exchanged between display devices through an interface. In this case, image distortion may occur in a process of receiving or transmitting an image from an adjacent display device.

In order to detect such communication performance degradation, a mode for testing communication performance between display devices may be separately performed. This mode may be automatically performed according to a user selection or when a preset condition is satisfied.

The processor 110 compares the image transmitted to the plurality of external display apparatuses 100 - 3 and the image received from the plurality of external display apparatuses 100 - 1 with the test image pre-stored in the memory 120 .

When the matching rate between images is lower than the threshold ratio, the processor may determine that communication performance between displays is degraded.

The processor 110 continuously monitors an image matching rate calculated by comparing an image transmitted to a plurality of external display devices and an image received from a plurality of external display devices with a test image pre-stored in the memory, and the image matching ratio is a critical value. If it is less than the ratio, an error message can be shown on the display.

The preset condition may be a condition for booting the display device, a condition for terminating the reproduction of content that has been reproduced on the display device, a condition for reproducing the next content, a condition for repeatedly performing replay, and the like. FIG. 9 is a diagram for explaining provision of feedback for a decrease in communication performance between various displays according to another embodiment of the present disclosure.

The processor may continuously monitor the image-to-image matching rate described with reference to FIG. 8 , and if the image-to-image matching rate is lower than the threshold ratio, an error message 910 may be displayed on the display.

Since there are a plurality of display devices, the corresponding error message 910 may be displayed on all display devices, but the error message may be displayed only on a specific display device or the master device that is easy to see from the user's field of view. A user who sees this message will contact a service center and request a repair.

10 is a flowchart illustrating a software failure test mode according to another embodiment of the present disclosure.

When the mode for testing software failure is executed (S1010), a virtual touch signal corresponding to the test image stored in the display device is generated (S1020). Software stored in the display device generates an image according to a virtual touch signal (S1030). The display device compares the generated image with the pre-stored test image to determine whether the software is defective (S1040).

The virtual touch signal may be a signal generated to define a touch position, a touch time, and a touch type input to display a test image on the display device.

When the mode for testing the failure of the touch sensor is executed, a test image is displayed, and when a user touch operation is performed according to the test image, based on the detection result of the touch sensor for the user touch operation and the test image, the The method may further include testing for defects.

The step of testing the defect of the touch sensor includes displaying a touch trace image according to the detection result of the touch sensor for user touch manipulation, comparing the touch trace image and the test image, and determining the defect of the touch sensor according to the matching rate between images It may further include the step of testing.

The test image is an image including a plurality of grids each having data values based on a preset pattern, and the step of determining whether the software is defective includes comparing the generated image and the test image in grid units corresponding to each other; It may include calculating a ratio of grids having matching data values, and determining whether software is defective based on the ratio.

When the software is identified as defective, the method may further include displaying software update information or transmitting information about the software defect to an external server.

Comparing the image transmitted to the plurality of external display devices and the image received from the plurality of external display devices with the test image pre-stored in the memory, further comprising the step of testing communication performance with the plurality of external display devices according to the matching rate between the images may include

The method may further include the step of continuously monitoring the image-to-image matching rate and displaying an error message when the image-to-image matching rate falls below a threshold ratio.

The testing of communication performance with the plurality of external display devices may include at least one of a condition in which the display device is booted, a condition in which reproduction of content being played on the display device is terminated, a condition in which the next content is reproduced, and a condition in which repeated reproduction is performed. This can be done whenever one is satisfied.

Each of the above steps has been specifically described in the description of the other drawings described above. In addition, the above-described test method may be implemented in the display device having the configuration of FIGS. 1 and 8 , but is not limited thereto, and may be implemented by a display device having a different configuration.

In addition, the various test methods described above may be stored and distributed in a recording medium in the form of a program code for performing the method. When the recording medium is mounted on the display device or downloaded online through a network and executed, the test operation in various modes as described above may be performed.

Here, the recording medium may be various types of computer-readable media such as ROM, RAM, memory chip, memory card, external hard drive, hard drive, CD, DVD, magnetic disk, or magnetic tape.

The present invention has been described above with reference to the accompanying drawings, but the scope of the present invention is determined by the following claims and should not be construed as being limited to the above-described embodiments and/or drawings. And it should be clearly understood that improvements, changes and modifications obvious to those skilled in the art of the invention described in the claims are also included in the scope of the present invention.

Claims

In the display device equipped with a defect test function,

a display including a display panel and a touch sensor;

a memory storing software and a test image operating according to a touch signal provided from the touch sensor; and

processor; including;

The processor is

When the mode for testing the failure of the software is executed, a virtual touch signal corresponding to the test image is provided to the software to generate an image corresponding to the virtual touch signal, and the generated image and the test image are A display device that compares the software to determine whether the software is defective.
According to claim 1,

The virtual touch signal is

A display device, which is a signal generated to define a touch position, a touch time, and a touch type input to display the test image on the display panel.
According to claim 1,

The processor is

When the mode for testing the failure of the touch sensor is executed,

The test image is displayed on the display panel, and when a user touch operation is performed according to the test image, the failure of the touch sensor is tested based on a detection result of the touch sensor for the user touch operation and the test image which is a display device.
4. The method of claim 3,

The processor is

Displaying a touch trace image on the display panel according to the detection result of the touch sensor for the user's touch manipulation, comparing the touch trace image and the test image, and testing the failure of the touch sensor according to the matching rate between images , display device.
According to claim 1,

The test image is

It is an image including a plurality of grids each having data values based on a preset pattern,

The processor is

Coordinates of each grid included in the test image, a touch time corresponding to a data value of each grid, and the virtual touch signal defining a touch type are generated and provided to the software;

When the image corresponding to the virtual touch signal is generated by the software, the generated image and the test image are compared in grid units corresponding to each other to calculate a ratio of grids having matching data values, the ratio Determining whether the software is defective based on the display device.
According to claim 1,

The processor is

If the software is identified as defective, displaying software update information on the display.
According to claim 1,

It further includes; a communication unit for performing communication with an external server,

The processor is

When it is identified that the software is defective, the display device transmits information about the software defect to the external server through the communication unit.
According to claim 1,

Further comprising; an interface for communicating with a plurality of external display devices;

The processor is

By comparing the image transmitted to the plurality of external display apparatuses and the image received from the plurality of external display apparatuses with the test image previously stored in the memory, communication performance with the plurality of external display apparatuses is improved according to the image matching rate. Testing, display device.
9. The method of claim 8,

The processor is

A display device for continuously monitoring the matching rate between images, and displaying an error message through the display when the matching rate between images is less than a threshold ratio.
9. The method of claim 8,

When at least one of a condition for booting the display device, a condition for terminating the reproduction of the content being reproduced on the display device, a condition for reproducing the next content, and a condition for repeatedly performing replay, the processor is configured to A display device for testing communication performance with a display device.
In the test method of a display device including a touch sensor, the software operating according to the touch signal provided from the touch sensor is installed,

generating a virtual touch signal corresponding to a test image stored in the display device when a mode for testing the software defect is executed;

generating, by the software, an image according to the virtual touch signal; and

and determining whether the software is defective by comparing the generated image with the test image.
12. The method of claim 11,

The virtual touch signal is

and a signal generated to define a touch position, a touch time, and a touch type input to display the test image on the display device.
12. The method of claim 11,

displaying the test image when a mode for testing the failure of the touch sensor is executed;

When a user touch manipulation is performed according to the test image, testing the failure of the touch sensor based on a detection result of the touch sensor for the user touch manipulation and the test image; further comprising a test method.
14. The method of claim 13,

Testing the failure of the touch sensor comprises:

displaying a touch trace image according to a detection result of the touch sensor for the user's touch manipulation;

Comparing the touch trace image and the test image, the step of testing the failure of the touch sensor according to the image matching rate; test method comprising a.
13. The method of claim 12,

The test image is

It is an image including a plurality of grids each having data values based on a preset pattern,

The step of determining whether the software is defective,

comparing the generated image and the test image in lattice units corresponding to each other;

calculating a proportion of grids having matching data values; and

Determining whether the software is defective based on the ratio; including a test method.