CN112785953B - Method, device and equipment for testing service life of display panel - Google Patents
Method, device and equipment for testing service life of display panel Download PDFInfo
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- CN112785953B CN112785953B CN202110053440.3A CN202110053440A CN112785953B CN 112785953 B CN112785953 B CN 112785953B CN 202110053440 A CN202110053440 A CN 202110053440A CN 112785953 B CN112785953 B CN 112785953B
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Abstract
The application discloses a method, a device and equipment for testing the service life of a display panel. The display panel is provided with a first display area and a second display area, the first display area is reused as a function area, and the method comprises the following steps: acquiring initial brightness values of the first display area and the second display area under a test picture; controlling the first display area to display a preset picture, controlling the second display area to be in a black state, and acquiring the current brightness values of the first display area and the second display area under the test picture after a preset time interval; determining a brightness change value of the first display area relative to the second display area according to the initial brightness value and the current brightness value; based on the brightness change value, the lifetime of the display panel is determined. According to the embodiment of the application, the service life of the display panel can be accurately tested.
Description
Technical Field
The application relates to the technical field of display, in particular to a service life testing method and device for a display panel and service life testing equipment for the display panel.
Background
With the development of display technology, a part of the display area of the display panel is reused as a functional area. For example, the functional area is a fingerprint identification area or a normally bright area in an Always On Display (AOD) mode.
In the prior art, the entire display area of the display panel is generally used as a whole for performing the life test, however, the actual use condition of the functional area of the display panel is different from that of the other display areas except the functional area, so that the functional area is also different from that of the other display areas except the functional area in terms of the service life, and if the life test is performed on the entire display area, the life of the display panel cannot be accurately tested.
Disclosure of Invention
The embodiment of the application provides a method, a device and equipment for testing the service life of a display panel, which can accurately test the service life of the display panel.
In a first aspect, an embodiment of the present application provides a method for testing a lifetime of a display panel, where the display panel has a first display area and a second display area, and the first display area is reused as a function area, and the method includes: acquiring initial brightness values of the first display area and the second display area under a test picture; controlling the first display area to display a preset picture, controlling the second display area to be in a black state, and acquiring the current brightness values of the first display area and the second display area under the test picture after a preset time interval; determining a brightness change value of the first display area relative to the second display area according to the initial brightness value and the current brightness value; based on the brightness change value, the lifetime of the display panel is determined.
In a possible implementation manner of the first aspect, the reusing the first display area as a fingerprint identification area, and controlling the first display area to display a preset picture includes:
and alternately controlling the first display area to display a preset picture and controlling the first display area to be in a black state, wherein the preset picture comprises a fingerprint picture.
In a possible implementation manner of the first aspect, determining a brightness change value of the first display area relative to the second display area according to the initial brightness value and the current brightness value includes:
the luminance change value is calculated according to equation (1):
wherein JNDAB represents a luminance change value, Lv (t) a represents a current luminance value of the first display area, Lv (t) B represents a current luminance value of the second display area, Lv (0) a represents an initial luminance value of the first display area, and Lv (0) B represents an initial luminance value of the second display area.
In a possible implementation manner of the first aspect, the preset time duration is a standard time duration, and determining the lifetime of the display panel based on the brightness change value includes:
the lifetime of the display panel is determined to be longer as the luminance change value is smaller, and the lifetime of the display panel is determined to be shorter as the luminance change value is larger.
In a possible implementation manner of the first aspect, the controlling the first display area to display a preset image, controlling the second display area to be in a black state, and obtaining current brightness values of the first display area and the second display area under the test image after a preset time interval includes:
and controlling the first display area to display a preset picture and controlling the second display area to be in a black state, and acquiring the current brightness values of the first display area and the second display area under the test picture after a preset time interval.
In a possible implementation manner of the first aspect, determining a brightness change value of the first display area relative to the second display area according to the initial brightness value and the current brightness value includes:
determining a brightness change value of the first display area relative to the second display area corresponding to the current brightness value obtained each time according to the initial brightness value and the current brightness value obtained each time;
determining a lifetime of the display panel based on the brightness variation value, comprising: determining the required time length when the brightness change value is equal to the standard brightness change value according to the plurality of brightness change values;
the longer the required time period is, the longer the life of the display panel is determined, and the shorter the required time period is, the shorter the life of the display panel is determined.
In a possible implementation manner of the first aspect, the determining a brightness variation value of the first display area relative to the second display area includes: determining the brightness change value of the first display area relative to each second display area;
determining a lifetime of the display panel based on the brightness variation value, comprising: and determining the service life of the display panel according to the maximum brightness change value in the plurality of brightness change values.
In a possible implementation manner of the first aspect, the determining a brightness variation value of the first display area relative to the second display area includes: determining the brightness change value of the first display area relative to each second display area;
determining a required time period when the luminance change value is equal to the standard luminance change value, including: determining the required time length when the brightness change value of each second display area is equal to the standard brightness change value;
determining a lifetime of the display panel based on the brightness variation value, comprising: and determining the service life of the display panel according to the shortest required time length in the plurality of required time lengths.
In a second aspect, an embodiment of the present application provides a device for testing a lifetime of a display panel, where the display panel has a first display area and a second display area, and the first display area is reused as a functional area, and the device includes:
the initial brightness acquisition module is used for acquiring initial brightness values of the first display area and the second display area under a test picture;
the current brightness acquisition module is used for controlling the first display area to display a preset picture, controlling the second display area to be in a black state, and acquiring current brightness values of the first display area and the second display area under the test picture after a preset time interval;
the brightness change determining module is used for determining a brightness change value of the first display area relative to the second display area according to the initial brightness value and the current brightness value;
and the service life evaluation module is used for determining the service life of the display panel based on the brightness change value.
In a third aspect, an embodiment of the present application provides a life testing apparatus for a display panel, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the life testing method for the display panel according to any one of the embodiments of the first aspect.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, where computer program instructions are stored on the computer-readable storage medium, and when the computer program instructions are executed by a processor, the method for testing the lifetime of a display panel according to the embodiment of the first aspect is implemented.
According to the embodiment of the application, the first display area is reused as the functional area, the first display area displays the preset picture, the second display area is in a black state in the life test process, namely, the working time of the first display area is longer than that of the second display area, so that the actual service condition of the display panel can be simulated more accurately, the life of the display panel is further evaluated based on the brightness change value of the first display area relative to the second display area, the life of the first display area can be accurately evaluated, and the life of the whole display area of the display panel can be accurately evaluated.
Drawings
Other features, objects, and advantages of the present application will become apparent from the following detailed description of non-limiting embodiments thereof, when read in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof, and which are not to scale.
Fig. 1 is a schematic flowchart illustrating a method for testing a lifetime of a display panel according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram illustrating a top view structure of a display panel according to an embodiment of the present disclosure;
fig. 3 is a schematic top view illustrating a display panel according to another embodiment of the present disclosure;
fig. 4 is a schematic structural diagram illustrating a lifetime testing apparatus for a display panel according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram illustrating a lifetime test apparatus for a display panel according to an embodiment of the present application.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
As shown in fig. 1, the method for testing the lifetime of a display panel provided in the embodiment of the present application includes steps 110 to 140.
And step 110, acquiring initial brightness values of the first display area and the second display area under the test picture.
And 120, controlling the first display area to display a preset picture, controlling the second display area to be in a black state, and acquiring the current brightness values of the first display area and the second display area under the test picture after a preset time interval.
And step 130, determining a brightness change value of the first display area relative to the second display area according to the initial brightness value and the current brightness value.
Based on the brightness variation value, the lifetime of the display panel is determined, step 140.
According to the embodiment of the application, the first display area is reused as the functional area, the first display area displays the preset picture, the second display area is in a black state in the life test process, namely, the working time of the first display area is longer than that of the second display area, so that the actual service condition of the display panel can be simulated more accurately, the life of the display panel is further evaluated based on the brightness change value of the first display area relative to the second display area, the life of the first display area can be accurately evaluated, and the life of the whole display area of the display panel can be accurately evaluated.
Illustratively, as shown in fig. 2, the display panel has a first display area a1 and a second display area a 2. The first display area a1 is multiplexed as a functional area, for example, the first display area a1 is multiplexed as a fingerprint recognition area or a normally bright area in the AOD display mode. For example, the first display area a1 is reused as a fingerprint identification area, and during the fingerprint identification process, the first display area a1 displays a predetermined image to increase the intensity of light reflected to the fingerprint identification sensor, so as to improve the accuracy of fingerprint identification. For another example, the first display area a1 is multiplexed as a normally bright area in the AOD display mode, other areas except the first display area a1 are displayed, and the first display area a1 continues to display, for example, time, date, received short message prompt information, and the like. The first display region a1 operates for a longer period of time than the other display regions, resulting in the first display region a1 aging faster than the other display regions, i.e., the first display region a1 operates with additional lifetime aging, and therefore, it is more accurate to evaluate the lifetime of the entire display region based on the lifetime of the first display region a 1.
Illustratively, the display panel 100 includes a display area AA, and the first display area a1 and the second display area a2 may be a part of the display area AA. The present application does not limit the position, shape and size of the first display area a1 and the second display area a 2. In some alternative embodiments, in order to improve the accuracy of the determined brightness variation value, the shapes and sizes of the first display region a1 and the second display region a2 may be the same.
The test frame may be any one of a white frame, a red frame, a green frame and a blue frame, and the test frame may include a plurality of white frames, red frames, green frames and blue frames. Taking the test picture as a white picture as an example, in step 110, the first display area and the second display area may display the white picture, and then the brightness acquisition device is used to sequentially acquire an initial brightness value of the first display area in the white picture and an initial brightness value of the second display area in the white picture. Taking the example that the test frame includes a white frame, a red frame, a green frame, and a blue frame, in step 110, the white frame, the red frame, the green frame, and the blue frame may be sequentially displayed in the first display area and the second display area, and then the initial brightness values of the first display area and the second display area in the white frame, the initial brightness value in the red frame, the initial brightness value in the green frame, and the initial brightness value in the blue frame are sequentially obtained by using the brightness acquisition device.
The above is merely an example, and the display order of the pictures and the brightness acquisition order of the first display area and the second display area are not limited in the present application.
In some optional embodiments, the first display area is reused as a normally-bright area in the AOD mode, and the preset picture in step 120 may be a picture including time, a picture including a short message prompt, or a picture including date, so as to more accurately simulate the actual use condition of the display panel.
In further alternative embodiments, the first display area is multiplexed as a fingerprint identification area. The controlling the first display area to display the preset screen in step 120 may include: and alternately controlling the first display area to display a preset picture and controlling the first display area to be in a black state, wherein the preset picture comprises a fingerprint picture.
In the process of actually using the display panel, the first display area does not always display the fingerprint image, and only when fingerprint identification is needed, the first display area displays the fingerprint image. That is, the first display area displays the fingerprint image in a dynamic display manner. In the embodiment of the application, the fingerprint display in the first display area and the black display in the first display area are alternately performed, that is, the fingerprint display in the first display area is controlled dynamically, so that the actual use condition of the first display area can be simulated more accurately, and the service life of the display panel can be evaluated more accurately.
For example, the preset screen may be a preset User Interface (UI) including a fingerprint. For example, the first display area may be controlled to display the fingerprint screen in a 1/second display manner. In addition, the first display area can be controlled to display the fingerprint picture in a gradually brightening and stabilizing mode so as to simulate the actual situation of a part of the display panel more accurately.
For example, in step 120, the preset time period may be half an hour, or longer, which is not limited in this application. Specifically, taking the preset duration as half an hour as an example, in step 120, the first display area is controlled to dynamically display the fingerprint picture, the second display area is in a black state, then the first display area and the second display area display the test picture again after half an hour, and the brightness acquisition device is used to acquire the current brightness values of the first display area and the second display area under the test picture.
In some optional embodiments, in step 130, a difference between the initial brightness value and the current brightness value of the first display area may be used as a first brightness change value of the first display area, a difference between the initial brightness value and the current brightness value of the second display area may be used as a second brightness change value of the second display area, and a difference between the first brightness change value and the second brightness change value may be used as a brightness change value of the first display area relative to the second display area, so as to determine a brightness change condition of the first display area relative to the second display area, that is, an aging degree of the first display area relative to the second display area. Further, in step 140, the brightness change value of the first display area relative to the second display area may be compared with a preset brightness change threshold, if the brightness change value of the first display area relative to the second display area is greater than the preset brightness change threshold, it is determined that the aging of the first display area is relatively serious, that is, the life of the corresponding display panel is relatively short, and if the brightness change value of the first display area relative to the second display area is less than the preset brightness change threshold, it is determined that the aging of the first display area is not serious, that is, the life of the first display area is relatively long, and the life of the corresponding display panel is relatively long.
In some alternative embodiments, a Just not possible Distortion (JND) of the first display area relative to the second display area may be calculated, and the JND may be used to characterize the luminance variation value of the first display area relative to the second display area. In the present application, JND may represent a maximum luminance change value that cannot be perceived by human eyes.
Specifically, in step 130, the brightness variation value of the first display area relative to the second display area may be calculated according to equation (1):
wherein JNDAB represents a luminance change value, Lv (t) a represents a current luminance value of the first display area, Lv (t) B represents a current luminance value of the second display area, Lv (0) a represents an initial luminance value of the first display area, and Lv (0) B represents an initial luminance value of the second display area.
The brightness change value calculated according to the formula (1) provided by the embodiment of the application can more accurately represent the aging degree of the first display area relative to the second display area, so that the service life of the display panel can be more accurately evaluated.
In some alternative embodiments, the preset duration may be a standard duration. The standard time length can be set according to the requirements of customers and also can be set according to experience. For example, the standard time period is 500 hours, 1000 hours, etc., which is not limited in the present application. Correspondingly, step 140 may include: the lifetime of the display panel is determined to be longer as the luminance change value is smaller, and the lifetime of the display panel is determined to be shorter as the luminance change value is larger. That is, the smaller the value of JND, the slower the first display region ages relative to the second display region, and the longer the lifetime of the first display region, and accordingly, the longer the lifetime of the display panel. The larger the value of the JND, the faster the first display region ages relative to the second display region, and the shorter the lifetime of the first display region, and accordingly, the shorter the lifetime of the display panel. According to the embodiment of the application, the aging degree of the first display area relative to the second display area can be accurately determined, and the service life of the display panel is further accurately determined.
It can be understood that, in the case that the preset duration is the standard duration, the current brightness values of the first display area and the second display area only need to be obtained once.
In addition, it should be understood that, if the test picture includes a plurality of pictures, the initial brightness value and the current brightness value in the above equation (1) are values corresponding to the same test picture, and the JND value corresponding to each picture can be calculated according to the above equation (1). The standard duration corresponding to different pictures can be different, and the standard duration is not limited in the application.
When the preset time length is the standard time length, that is, the current brightness value is obtained only once, the number of the second display areas may be one or multiple. For example, as shown in fig. 3, the number of the second display regions is multiple, and determining the brightness variation value of the first display region relative to the second display region in step 130 may include: and determining the brightness change value of the first display area relative to each second display area. Correspondingly, step 140 may include: and determining the service life of the display panel according to the maximum brightness change value in the plurality of brightness change values.
Fig. 3 shows that the number of the second display areas a2 is two, so that the JND value of the first display area with respect to each second display area can be calculated, and the largest JND value among the JND values can be determined, as described above, the larger the value of JND, the faster the first display area ages with respect to the second display area, the shorter the life of the first display area, and accordingly, the shorter the life of the display panel. In the embodiment of the present application, the maximum JND value is used as the determination criterion, which is equivalent to a stricter criterion for lifetime evaluation, that is, the display panel can achieve a higher quality criterion.
Of course, when the number of the second display areas is multiple, after the brightness change value of the first display area relative to each second display area is calculated, the average value of the brightness change values can be calculated, and then the service life of the display panel is determined according to the average value of the brightness change values, so that the problem that the accuracy of service life evaluation is influenced due to different characteristics of the second display areas is avoided.
In some alternative embodiments, the current brightness values of the first display area and the second display area under the test picture may be acquired multiple times. Specifically, step 120 may specifically include: and controlling the first display area to display a preset picture and controlling the second display area to be in a black state, and acquiring the current brightness values of the first display area and the second display area under the test picture after a preset time interval. For example, the preset time period is half an hour, and step 120 specifically includes: and controlling the first display area to display a preset picture and controlling the second display area to be in a black state, and acquiring the current brightness values of the first display area and the second display area under the test picture at one time every half an hour. Of course, the duration of the interval may also be different, and the application is not limited thereto.
By acquiring the current brightness value for multiple times, multiple JND values and the time length corresponding to each JND value can be obtained, and the service life of the display panel can be evaluated according to the time length corresponding to the JND values.
In some optional embodiments, step 130 may specifically include: and determining the brightness change value of the first display area relative to the second display area corresponding to the current brightness value obtained each time according to the initial brightness value and the current brightness value obtained each time. Correspondingly, step 140 may specifically include: determining the required time length when the brightness change value is equal to the standard brightness change value according to the plurality of brightness change values; the longer the required time period is, the longer the lifetime of the display panel is determined, and the shorter the required time period is, the shorter the lifetime of the display panel is determined. That is, the longer the required time period is, the slower the actual JND value reaches the standard luminance change value, and the slower the first display region ages relative to the second display region, the longer the life of the first display region is, and accordingly, the longer the life of the display panel is. If the required time is shorter, the actual JND value reaches the standard brightness change value faster, the first display area is aged faster relative to the second display area, the service life of the first display area is shorter, and correspondingly, the service life of the display panel is shorter. According to the embodiment of the application, the aging degree of the first display area relative to the second display area can be accurately determined, and the service life of the display panel is further accurately determined.
After the current brightness value is obtained each time, a JND value corresponding to the current brightness value obtained each time may be calculated according to equation (1). Here, the luminance initial value corresponding to the JND value calculated each time is the same. The standard brightness variation value in step 140 may be set according to the requirements of the customer or may be set according to experience. For example, the standard luminance variation value may be 0.5, 0.8, 1, or 1.5, which is not limited in the present application.
In addition, it should be understood that if the test picture includes a plurality of pictures, the initial luminance value in the above equation (1) and the current luminance value obtained each time are values corresponding to the same test picture, and a plurality of JND values corresponding to each picture can be calculated according to the above equation (1). The standard brightness variation values corresponding to different frames may be different, and the application does not limit this.
In the case where the current luminance value is acquired a plurality of times and the lifetime is evaluated by the time length required for the luminance change value to reach the standard luminance change value, the number of the second display areas may be one or a plurality of. For example, the number of the second display regions is multiple, and determining the brightness variation value of the first display region relative to the second display region in step 130 may include: and determining the brightness change value of the first display area relative to each second display area. Correspondingly, the determining the required time duration when the brightness change value is equal to the standard brightness change value in step 140 may include: determining the required time length when the brightness change value of each second display area is equal to the standard brightness change value; correspondingly, determining the life of the display panel based on the brightness variation value may include: and determining the service life of the display panel according to the shortest required time length in the plurality of required time lengths.
Still taking fig. 3 as an example, the number of the second display areas is two, and for any one of the second display areas, a plurality of JND values can be calculated, and the required time length when the actual JND value reaches the standard luminance change value can be determined. As described above, the shorter the required time period is, the shorter the lifetime of the display panel is determined, and accordingly, the shorter the lifetime of the display panel is. In the embodiment of the present application, the shortest required time is taken as a determination criterion, which is equivalent to a stricter criterion for lifetime evaluation, that is, the display panel can reach a higher quality criterion.
Of course, when the number of the second display areas is multiple, after the required time corresponding to each second display area is obtained, the average value of the required time can be calculated, and then the service life of the display panel is determined according to the average value of the required time, so that the problem that the accuracy of service life evaluation is influenced due to different characteristics of the second display areas is avoided.
Referring to fig. 3, when the number of the second display areas is multiple, the multiple second display areas may be distributed on two sides of the first display area in the first direction X. Further, the plurality of second display areas and the first display areas are the same in shape and size. The central points of the plurality of second display areas and the central point of the first display area are on the same straight line, so that when the brightness of the plurality of second display areas and the brightness of the first display area are collected, the brightness collection device 200 is translated. When the brightness acquisition device is used to acquire the brightness of the first display area and the second display area, the center point of the lens of the brightness acquisition device 200 may be sequentially aligned with the center point of the first display area and the center point of the second display area.
In addition, a connection line between the center points of the plurality of second display regions and the center point of the first display region may be perpendicular to a data line (not shown) of the display panel 100, the data line extending along the second direction Y. Therefore, the impedance of the data lines corresponding to the first display area and the second display areas is the same, and the brightness difference caused by the impedance difference of the first display area and the second display areas can be avoided, so that the brightness change value is inaccurate.
For example, a change curve of the brightness of the first display area and the second display area along with time can be drawn, so that the brightness attenuation condition of the first display area and the second display area can be visually observed, and the application does not require the change curve.
The embodiment of the application also provides a life test device of the display panel. As shown in fig. 4, the device 400 for testing the lifetime of a display panel provided in this embodiment of the present application includes an initial brightness obtaining module 401, a current brightness obtaining module 402, a brightness change determining module 403, and a lifetime evaluating module 404.
An initial brightness obtaining module 401, configured to obtain initial brightness values of the first display area and the second display area in the test picture.
And a current brightness obtaining module 402, configured to control the first display area to display a preset picture, and control the second display area to be in a black state, and after a preset time interval, obtain current brightness values of the first display area and the second display area under the test picture.
A brightness change determining module 403, configured to determine a brightness change value of the first display area relative to the second display area according to the initial brightness value and the current brightness value.
And a lifetime evaluation module 404 for determining the lifetime of the display panel based on the brightness variation value.
According to the embodiment of the application, the first display area is reused as the functional area, the first display area displays the preset picture, the second display area is in a black state in the life test process, namely, the working time of the first display area is longer than that of the second display area, so that the actual service condition of the display panel can be simulated more accurately, the life of the display panel is further evaluated based on the brightness change value of the first display area relative to the second display area, the life of the first display area can be accurately evaluated, and the life of the whole display area of the display panel can be accurately evaluated.
In some optional embodiments, the first display area is reused as a fingerprint identification area, and the current brightness obtaining module 402 is specifically configured to: and alternately controlling the first display area to display a preset picture and controlling the first display area to be in a black state, wherein the preset picture comprises a fingerprint picture.
In some alternative embodiments, the brightness change determining module 403 is specifically configured to: the luminance change value of the first display area with respect to the second display area is calculated according to the above equation (1).
In some optional embodiments, the preset duration may be a standard duration, and the lifetime evaluation module 404 is specifically configured to:
in some alternative embodiments, the lifetime of the display panel is determined to be longer if the luminance change value is smaller, and the lifetime of the display panel is determined to be shorter if the luminance change value is larger.
In some optional embodiments, the current brightness obtaining module 402 is specifically configured to: and controlling the first display area to display a preset picture and controlling the second display area to be in a black state, and acquiring the current brightness values of the first display area and the second display area under the test picture after a preset time interval.
In some alternative embodiments, the brightness change determining module 403 is specifically configured to: and determining the brightness change value of the first display area relative to the second display area corresponding to the current brightness value obtained each time according to the initial brightness value and the current brightness value obtained each time. Correspondingly, the lifetime assessment module 404 is specifically configured to: determining the required time length when the brightness change value is equal to the standard brightness change value according to the plurality of brightness change values; the longer the required time period is, the longer the life of the display panel is determined, and the shorter the required time period is, the shorter the life of the display panel is determined.
In some optional embodiments, the number of the second display areas is multiple, and the current brightness obtaining module 403 is specifically configured to: and determining the brightness change value of the first display area relative to each second display area. Correspondingly, the lifetime assessment module 404 is specifically configured to: and determining the service life of the display panel according to the maximum brightness change value in the plurality of brightness change values.
In some optional embodiments, the number of the second display areas is multiple, and the current brightness obtaining module 403 is specifically configured to: and determining the brightness change value of the first display area relative to each second display area. Correspondingly, the lifetime assessment module 404 is specifically configured to: determining the required time length when the brightness change value of each second display area is equal to the standard brightness change value; and determining the service life of the display panel according to the shortest required time length in the plurality of required time lengths.
The life test device of the display panel in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.
The life test device of the display panel in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.
The life test device for the display panel provided in the embodiment of the present application can implement the life test method for the display panel shown in fig. 1 and each process in the embodiment, and is not described here again to avoid repetition.
Fig. 5 shows a hardware structure diagram of a life test device for a display panel according to an embodiment of the present application.
The life test apparatus at the display panel may include a processor 901 and a memory 902 storing computer program instructions.
Specifically, the processor 901 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured as one or more Integrated circuits implementing the embodiments of the present invention.
The processor 901 reads and executes the computer program instructions stored in the memory 902 to implement the life testing method of the display panel in any of the above embodiments.
In one example, the life test equipment of the display panel may further include a communication interface 903 and a bus 910. As shown in fig. 5, the processor 901, the memory 902, and the communication interface 903 are connected via a bus 910 to complete communication with each other.
The communication interface 903 is mainly used for implementing communication between modules, apparatuses, units and/or devices in the embodiments of the present invention.
The bus 910 includes hardware, software, or both to couple the components of the life testing apparatus of the display panel to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. Bus 910 can include one or more buses, where appropriate. Although specific buses have been described and illustrated with respect to embodiments of the invention, any suitable buses or interconnects are contemplated by the invention.
The life test device of the display panel may perform the life test method of the display panel in the embodiment of the present application, thereby implementing the life test method of the display panel and the life test apparatus of the display panel described with reference to fig. 1 and 4.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for testing the lifetime of the display panel in the foregoing embodiment can be implemented, and the same technical effect can be achieved. The computer-readable storage medium may include a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like, which is not limited herein.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. "computer-readable media" may include any medium that can store or transfer information. Examples of computer readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware for performing the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In accordance with the embodiments of the present application as described above, these embodiments are not exhaustive and do not limit the application to the specific embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and its practical application, to thereby enable others skilled in the art to best utilize the application and its various modifications as are suited to the particular use contemplated. The application is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A method for testing the service life of a display panel is characterized in that the display panel is provided with a first display area and a second display area, the first display area is reused as a function area, and the method comprises the following steps:
acquiring initial brightness values of the first display area and the second display area under a test picture;
controlling the first display area to display a preset picture, controlling the second display area to be in a black state, and acquiring the current brightness values of the first display area and the second display area under the test picture after a preset time interval;
determining a brightness change value of the first display area relative to the second display area according to the initial brightness value and the current brightness value;
determining a lifetime of the display panel based on the brightness variation value;
the preset duration is a standard duration, and the determining the service life of the display panel based on the brightness change value comprises the following steps:
and if the brightness change value is smaller, determining that the service life of the display panel is longer, and if the brightness change value is larger, determining that the service life of the display panel is shorter.
2. The method for testing the lifetime of a display panel according to claim 1, wherein the first display area is reused as a fingerprint identification area, and the controlling the first display area to display a preset picture comprises:
and alternately controlling the first display area to display the preset picture and controlling the first display area to be in a black state, wherein the preset picture comprises a fingerprint picture.
3. The method for testing the lifetime of a display panel according to claim 1, wherein the determining the luminance variation value of the first display area relative to the second display area according to the initial luminance value and the current luminance value comprises:
calculating the brightness variation value according to equation (1):
wherein JNDAB represents the luminance change value, Lv (t) a represents the current luminance value of the first display area, Lv (t) B represents the current luminance value of the second display area, Lv (0) a represents the initial luminance value of the first display area, and Lv (0) B represents the initial luminance value of the second display area.
4. The method for testing the lifetime of a display panel according to claim 3, wherein the controlling the first display area to display a preset picture and the second display area to be in a black state, and after a preset time interval, obtaining the current luminance values of the first display area and the second display area under the test picture comprises:
and controlling the first display area to display a preset picture, controlling the second display area to be in a black state, and acquiring the current brightness values of the first display area and the second display area under the test picture at intervals of the preset time.
5. The method for testing the lifetime of a display panel according to claim 4, wherein the determining the luminance variation value of the first display area relative to the second display area according to the initial luminance value and the current luminance value comprises:
determining the brightness change value of the first display area corresponding to the current brightness value obtained each time relative to the second display area according to the initial brightness value and the current brightness value obtained each time;
the determining the life of the display panel based on the brightness change value comprises: determining the required time length when the brightness change value is equal to a standard brightness change value according to the plurality of brightness change values;
and if the required time length is longer, determining that the service life of the display panel is longer, and if the required time length is shorter, determining that the service life of the display panel is shorter.
6. The method for testing the lifetime of a display panel according to claim 1, wherein the number of the second display regions is plural, and the determining the luminance variation value of the first display region relative to the second display region comprises: determining the brightness change value of the first display area relative to each second display area;
the determining the life of the display panel based on the brightness change value comprises: and determining the service life of the display panel according to the maximum brightness change value in the plurality of brightness change values.
7. The method for testing the lifetime of a display panel according to claim 5, wherein the number of the second display regions is plural, and the determining the brightness variation value of the first display region relative to the second display region comprises: determining the brightness change value of the first display area relative to each second display area;
the determining the required time duration when the brightness change value is equal to the standard brightness change value includes: determining the required time length when the brightness change value of each second display area is equal to a standard brightness change value;
the determining the life of the display panel based on the brightness change value comprises: and determining the service life of the display panel according to the shortest required time length in the plurality of required time lengths.
8. A life test device of a display panel, wherein the display panel has a first display area and a second display area, the first display area is multiplexed as a functional area, the device comprising:
the initial brightness acquisition module is used for acquiring initial brightness values of the first display area and the second display area under a test picture;
the current brightness obtaining module is used for controlling the first display area to display a preset picture, controlling the second display area to be in a black state, and obtaining the current brightness values of the first display area and the second display area under the test picture after a preset time interval;
the brightness change determining module is used for determining a brightness change value of the first display area relative to the second display area according to the initial brightness value and the current brightness value;
and the service life evaluation module is used for determining the service life of the display panel based on the brightness change value.
9. A life test apparatus of a display panel, comprising a processor, a memory, and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing a life test method of a display panel according to any one of claims 1 to 7.
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