Screen lighting test device and screen lighting test method

Abstract

The invention discloses a screen lighting test device and a screen lighting test method, and belongs to the technical field of display. The screen lighting test device comprises a main module and a module connection module, wherein the main module is connected with the module connection module; the module connection module is used for being connected with a display module, and model identification information corresponding to the display module is built in the module connection module; the main module is internally provided with parameter initialization configurations corresponding to n types of display module models, and target parameter initialization configurations in the n types of parameter initialization configurations are matched with the models of the display modules and are used for configuring screen lighting test parameters of the display modules. The module connection module with the built-in model identification information is connected with the main module, and the main module can complete display module model identification and screen lighting parameter initialization based on the built-in parameter initialization configuration by reading the built-in model information, so that automatic testing of various display modules is realized, and manual judgment errors are avoided.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a point screen testing device and a point screen testing method. Background Art

[0002] In the fields of Virtual Reality (VR), Augmented Reality (AR) and Mixed Reality (MR), the display module is one of the key components of VR, AR and MR devices, so it is necessary to perform point screen testing on the display module during the production stage.

[0003] In the related art, a dot screen test device is usually used to perform a dot screen test on the display module. During the test, the inspector will determine the model of the display module to be tested, select the corresponding initialization configuration, and set the initialization configuration of the dot screen test in the dot screen test device. After the display module is connected, the inspector will power on the dot screen test device to dot the display module. After the display module displays a picture, the inspector will use the matching optical instrument to complete the detection of the display module parameters and determine whether the display module test results are qualified. Then the power is turned off and other models of display modules are connected to test the next display module, and the cycle is repeated.

[0004] The above test process requires manual judgment of the display module model to select the corresponding initialization configuration, which has a certain risk of error. Summary of the invention

[0005] The present application provides a point screen test device and a point screen test method, which can avoid setting wrong point screen initialization parameters due to human misjudgment. The technical solution is as follows:

[0006] According to one aspect of the present application, a point screen test device is provided, the point screen test device comprising a main module and a module connection module, the main module being connected to the module connection module;

[0007] The module connection module is used to connect with the display module, and the module connection module has built-in model identification information corresponding to the display module, and the model identification information is used to indicate the model of the display module;

[0008] The main module has built-in parameter initialization configurations corresponding to n display module models, and the target parameter initialization configuration in the n parameter initialization configurations matches the model of the display module. The target parameter initialization configuration is used to configure the point screen test parameters of the display module, and n is a positive integer greater than 1.

[0009] Optionally, the main module is used to read the model identification information through the module connection module, and determine the target parameter initialization configuration among the n parameter initialization configurations according to the model identification information; the main module is also used to perform a screen dot test on the display module according to the target parameter initialization configuration.

[0010] Optionally, the main module includes a logic control module and a display driver module, the display driver module has built-in point screen parameters corresponding to the n display module models, the logic control module is connected to the module connection module, the display driver module is connected to the module connection module, and the display driver module is connected to the logic control module;

[0011] The logic control module is used to read the model identification information through the module connection module, and transmit the model identification information to the display driving module; the display driving module is used to determine the target point screen parameter among n types of point screen parameters according to the model identification information, and drive the display module point screen through the target point screen parameter.

[0012] Optionally, the target point screen parameters include power supply parameters and display signal parameters; the display driver module is used to power the display module according to the power supply parameters, and provide a display signal to the display module according to the display signal parameters to drive the display module to point the screen.

[0013] Optionally, the display module includes a MIPI standard interface, and the display driver module includes a bridge chip; the bridge chip is used to process the data of the dot screen test image according to the display signal parameters to obtain a display signal for the MIPI standard interface.

[0014] Optionally, the dot screen testing device further includes a host computer, and the host computer is connected to the display driving module;

[0015] The host computer is used to transmit the point screen test image to the display driving module.

[0016] Optionally, the point screen testing device further includes a host computer, and the host computer is connected to the main module;

[0017] The main module is used to collect the point screen test data of the display module, and transmit the point screen test data and the model identification information to the host computer; the host computer is used to determine the point screen test result of the display module based on the point screen test data and the model identification information.

[0018] Optionally, the point screen testing device further includes an indicator light, and the indicator light is connected to the main module;

[0019] The host computer is used to transmit the point screen test result to the main module; the main module is used to light up the indicator light according to the point screen test result.

[0020] Optionally, the dot screen test device also includes a dot screen test module, which is connected to the main module and connected to the module connection module; the main module is used to control the dot screen test module to perform a dot screen test on the display module in the dot screen state; the dot screen test module is used to transmit the dot screen test data to the main module.

[0021] Optionally, the dot screen test module includes an electrical sampling module; the main module is used to control the electrical sampling module to perform electrical sampling on the display module in the dot screen state; the electrical sampling module is used to transmit the electrical sampling result to the main module; the main module is used to transmit the electrical sampling result and the model identification information to the host computer; the host computer is used to determine the first dot screen test result of the display module according to the electrical testing conditions corresponding to the electrical sampling result and the model identification information.

[0022] Optionally, the dot screen test module includes an optical test module; the main module is used to control the electrical sampling module to perform an optical test on the display module in the dot screen state; the optical test module is used to transmit the optical test result to the main module; the main module is used to transmit the optical test result and the model identification information to the host computer; the host computer is used to determine the second dot screen test result of the display module according to the optical test result and the optical test condition corresponding to the model identification information.

[0023] Optionally, the module connection module includes a flip structure, and the flip structure is used to fix the display module; the module connection module is used to generate a first signal when power is turned on and the flip structure is opened.

[0024] Optionally, the module connection module includes a travel button, and when the module connection module is connected to the main module, the travel button is in a first position, and when the module connection module is disconnected from the main module, the travel button is in a second position; the module connection module is used to generate a second signal when power is turned on and the travel button is in the second position.

[0025] According to another aspect of the present application, a point screen testing method is provided, which can be used for the device described in the above aspect, and the method includes:

[0026] The main module reads the model identification information through the module connection module;

[0027] The main module determines the target parameter initialization configuration from n parameter initialization configurations according to the model identification information;

[0028] The main module controls the display module to perform a point-screen test according to the target parameter initialization configuration.

[0029] Optionally, the main module includes a logic control module and a display driver module, and the display driver module has built-in point screen parameters corresponding to the n display module models; the main module reads the model identification information through the module connection module, including:

[0030] The logic control module reads the model identification information through the module connection module;

[0031] The main module determines the target parameter initialization configuration from n parameter initialization configurations according to the model identification information, including:

[0032] The logic control module transmits the model identification information to the display driving module;

[0033] The display driving module determines a target point screen parameter from among n types of point screen parameters according to the model identification information;

[0034] The main module controls the display module to perform a point-screen test according to the target parameter initialization configuration, including:

[0035] The display driving module drives the display module to point the screen according to the target point screen parameter.

[0036] Optionally, the target point screen parameter includes a power supply parameter and a display signal parameter; the display driving module drives the display module to point screen according to the target point screen parameter, including:

[0037] The display driving module supplies power to the display module according to the power supply parameters, and provides a display signal to the display module according to the display signal parameters, so as to drive the display module to dot the screen.

[0038] Optionally, the display module includes a MIPI standard interface, and the display driver module includes a bridge chip; the method further includes:

[0039] The bridge chip processes the data of the point screen test image according to the display signal parameters to obtain a display signal for the MIPI standard interface.

[0040] Optionally, the point screen testing device further includes a host computer; the method further includes:

[0041] The host computer transmits the point screen test image to the display driving module.

[0042] Optionally, the point screen testing device further includes a host computer; the method further includes:

[0043] The main module collects the point screen test data of the display module;

[0044] The main module transmits the point screen test data and the model identification information to the host computer;

[0045] The host computer determines the point screen test result of the display module according to the point screen test data and the model identification information.

[0046] Optionally, the point screen testing device further includes an indicator light; and the method further includes:

[0047] The host computer transmits the point screen test result to the main module;

[0048] The main module lights up the indicator light according to the point screen test result.

[0049] Optionally, the point screen test device further includes a point screen test module; the main module collects the point screen test data of the display module, including:

[0050] The main module controls the point screen test module to perform a point screen test on the display module in the point screen state;

[0051] The point screen test module transmits the point screen test data to the main module.

[0052] Optionally, the point screen test module includes an electrical sampling module; the main module controls the point screen test module to perform a point screen test on the display module in the point screen state, including:

[0053] The main module controls the electrical sampling module to perform electrical sampling on the display module in the dot screen state;

[0054] The point screen test module transmits the point screen test data to the main module, including:

[0055] The electrical sampling module transmits the electrical sampling result to the main module;

[0056] The main module transmits the point screen test data and the model identification information to the host computer, including:

[0057] The main module transmits the electrical sampling result and the model identification information to the host computer;

[0058] The host computer determines the point screen test result of the display module according to the point screen test data and the model identification information, including:

[0059] The host computer determines a first point screen test result of the display module according to the electrical sampling result and the electrical test condition corresponding to the model identification information.

[0060] Optionally, the point screen test module further includes an optical test module; the main module controls the point screen test module to perform a point screen test on the display module in the point screen state, including:

[0061] The main module controls the optical test module to perform an optical test on the display module in the dot screen state;

[0062] The point screen test module transmits the point screen test data to the main module, including:

[0063] The optical test module transmits the optical test result to the main module;

[0064] The main module transmits the point screen test data and the model identification information to the host computer, including:

[0065] The main module transmits the optical test result and the model identification information to the host computer;

[0066] The host computer determines the point screen test result of the display module according to the point screen test data and the model identification information, including:

[0067] The host computer determines a second point screen test result of the display module according to the optical test result and the optical test condition corresponding to the model identification information.

[0068] Optionally, the method further comprises:

[0069] In response to the first signal, the main module controls the module connection module and the display module to be powered off.

[0070] Optionally, the method further comprises:

[0071] In response to the second signal, the main module controls the module connection module and the display module to be powered off.

[0072] Optionally, the method further comprises:

[0073] When the dot screen testing device is powered on, the main module detects the connection with the module connecting module and the display module.

[0074] The beneficial effects of the technical solution provided by this application include at least:

[0075] The module connection module is designed for display modules of different models. It has built-in model identification information of the corresponding display modules. After connecting to the main module, the main module can complete the display module model identification and parameter initialization configuration by reading the built-in information, thereby realizing automatic testing of various display modules and avoiding setting incorrect dot screen initialization parameters due to manual misjudgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0077] Figure 1 is a structural block diagram of a point screen testing device provided by an exemplary embodiment of the present application;

[0078] Figure 2 is a structural block diagram of a bridge chip provided by an exemplary embodiment of the present application;

[0079] Figure 3 is a schematic diagram of a flip cover structure provided by an exemplary embodiment of the present application;

[0080] Figure 4 is a schematic diagram of a travel key provided by an exemplary embodiment of the present application;

[0081] Figure 5 It is a product schematic diagram of a point screen testing device provided by an exemplary embodiment of the present application;

[0082] Figure 6 is a flow chart of a point screen testing method provided by an exemplary embodiment of the present application;

[0083] Figure 7 It is a schematic diagram of a point screen testing process provided by an exemplary embodiment of the present application.

[0084] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0085] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0086] With the development of VR, AR, and MR technologies, in order to enhance the user experience, display modules are developing towards high resolution, high refresh rate, and small size. The Mobile Industry Processor Interface (MIPI) standard interface has been widely used in display modules due to its advantages such as high bandwidth and few lines. The display module is one of the key components of VR, AR, and MR devices. The quality of the display module directly affects the display effect of the whole machine and the user experience. Therefore, before the MIPI display module (including the display module with the MIPI standard interface) is assembled, it is necessary to use a point screen test device to perform functional testing on it to ensure that it can display normally and all parameters are normal. Since different models of MIPI display modules require different initialization parameters (such as display parameters, power parameters, etc.), if the initialization parameters are inconsistent with the MIPI display module model, there will be certain point screen abnormal display situations, and even the risk of screen burn-in.

[0087] In the related art, for the process of using a point screen test device to test the MIPI display module: the test personnel will determine the model of the MIPI display module to be tested, and select the corresponding initialization parameters through the host computer and send them to the point screen test device, then power off the point screen test device, connect the MIPI display module, and power on the point screen test device after the MIPI display module is correctly connected. After the MIPI display module has a screen display, the matching optical instrument is used to complete the detection of the MIPI display module parameters and determine whether the MIPI display module test result is qualified. Then the connected MIPI display module is powered off, and then the next MIPI display module is tested, and so on. The above test process requires the test personnel to manually determine the initialization parameters and test results of the MIPI display module, the test efficiency is low, and the professional requirements of the test personnel are high. There is still a certain risk of error in the process of sending the initialization parameters, and in the process of multiple power-on and power-off operations of the point screen test device, if the operation is wrong, the MIPI display module will be plugged and unplugged with power, which may easily cause the MIPI display module to display abnormally or even burn in.

[0088] The dot screen test device provided in the embodiment of the present application has built-in model identification information of display modules of different models and corresponding parameter initialization configurations. After connecting the display module, by reading the model identification information of the current display module, the currently used parameter initialization configuration can be selected in the built-in parameter initialization configuration, thereby realizing automatic testing of display modules of various models. Moreover, after the display module identification and parameter initialization are completed, the dot screen test device provided in the embodiment of the present application can automatically complete the test of the electrical parameters and optical parameters of the display module, and indicate the test results through indicator lights. Moreover, the dot screen test device provided in the embodiment of the present application has an anti-hot-swap design for the process of replacing the display module to support continuous testing of the display module, while avoiding abnormal display and screen burn-in of the display module.

[0089] Figure 1 1 is a structural block diagram of a point screen test device provided by an exemplary embodiment of the present application. Figure 1 As shown, the point screen testing device includes: a main module 101 and a module connecting module 102, and the main module 101 is connected to the module connecting module 102.

[0090] The module connection module 102 is used to connect to the display module to be tested, and the module connection module 102 has built-in model identification information corresponding to the display module. The model identification information is used to indicate the model of the display module, and the model identification information is information used to indicate the model of the display module, such as the model name of the display module, the model code of the display module, the model serial number of the display module, etc. Optionally, the point screen test device provided in the embodiment of the present application has a module connection module 102 corresponding to each of n types of display module models, and the model identification information built into the module connection module 102 connected to the main module 101 corresponds to the model of the currently connected display module, and n is a positive integer greater than 1.

[0091] The main module 101 has built-in parameter initialization configurations corresponding to n types of display module models, that is, parameter initialization configurations corresponding to n types of display module models. The model identification information of the module connection module 102 belongs to the n types of model identification information, and the target parameter initialization configuration in the n types of parameter initialization configurations matches the model of the display module to be tested, that is, the target parameter initialization configuration is the parameter initialization configuration corresponding to the model of the display module currently connected to the module connection module 102. The target parameter initialization configuration is used to configure the point screen test parameters of the display module, and the target parameter initialization configuration is used to control the point screen of the display module, for example, including display-related parameters and power-related parameters. The display-related parameters are used to control the display of the display module, and the power-related parameters are used to control the voltage / current applied to the display module. Optionally, the above-mentioned model identification information and parameter initialization configuration are pre-set by the inspection personnel.

[0092] Optionally, the main module 101 is used to read the model identification information through the module connection module 102, and determine the target parameter initialization configuration in the built-in n parameter initialization configurations according to the model identification information. After determining the target parameter initialization configuration corresponding to the display module, the main module 101 is used to perform a screen point test on the display module according to the target parameter initialization configuration.

[0093] In an optional implementation, continue to refer to Figure 1 The main module 101 includes a logic control module 104 and a display driver module 103. The display driver module 103 has built-in point screen parameters corresponding to n display module models, and the point screen parameters include relevant parameters used when the display module is point screened. The target parameter initialization configuration includes the target point screen parameters. The logic control module 104 is connected to the module connection module 102, the display driver module 103 is connected to the module connection module 102, and the display driver module 103 is connected to the logic control module 104.

[0094] The logic control module 104 is used to read the model identification information of the display module through the module connection module 102 (for example, through Figure 1 The model identification information is transmitted to the display driver module 103 (for example, via the signal interface 2 in FIG. 1 ). Figure 1 The display driver module 103 is used to determine the target point screen parameters according to the model identification information of the display module, and drive the display module to point the screen according to the target point screen parameters.

[0095] Optionally, the target point screen parameter includes a power supply parameter and a display signal parameter. The display driver module 103 is used to supply power to the display module according to the power supply parameter, and to provide a display signal to the display module according to the display signal parameter, so as to drive the display module to point the screen. The power supply parameter is used to indicate the power supply mode to the display module, and the display signal parameter is used to indicate the mode of providing the display signal to the display module, and the display signal can enable the display module to display an image.

[0096] Optionally, the display driver module 103 includes a bridge chip. The display module includes a MIPI standard interface, which may also be referred to as a MIPI module. The bridge chip is used to process the data of the point screen test image according to the target display signal parameters, thereby obtaining a display signal for the MIPI standard interface, so as to realize driving the display module to display an image through the MIPI standard interface. The point screen test image is an image used for the point screen test of the MIPI display module, including a picture or a video. Optionally, the display driver module 103 also includes a logic control unit, which is used to manage the processing logic of the display driver module 103.

[0097] For example, Figure 2FIG. 1 is a structural block diagram of a bridge chip provided by an exemplary embodiment of the present application. Figure 2 As shown, the bridge chip 201 includes an input module 202, a data conversion unit 203, a data cache unit 204, a data encoding unit 205, an on-chip memory (On Chip Memory, OCM) unit 206 and an output module 207. Optionally, the input module 202 is a display interface (DisplayPort, DP) / High Definition Multimedia Interface (High Definition Multimedia Interface, HDMI) receiving (RX) module for receiving DP / HDMI signals. The output module 207 is a MIPI port physical layer (Port PhysicalLayer, PHY) module for outputting display signals for MIPI standard interfaces. The DP / HDMI RX module can be connected (link) via DP to achieve image data transmission, extended display identification data (Extend DisplayIdentification Data, EDID) identification and other signal handshakes with the display driver, and the same is true for HDMI connection. The MIPI PHY interface can support the CPHY protocol cluster or the DPHY protocol cluster, and is configured according to the MIPI interface type of the MIPI display module when used. The data of the dot screen test image is converted and encoded by the above components in the bridge chip, and then transmitted to the MIPI display module through the MIPI interface for display, thereby realizing the dot screen function.

[0098] Optionally, the point screen test device further includes a host computer 106, which is connected to the display driver module 103. For example, the host computer 106 is a computer device, specifically a personal computer (PC) or an access point (AP). The host computer 106 is used to transmit the point screen test image to the display driver module 103. For example, the image is transmitted to the display driver module 103 via a standard video interface such as DP or HDMI.

[0099] In an optional implementation, continue to refer to Figure 1 The point screen test device also includes a host computer 106, which is connected to the main module 101. For example, the host computer 106 is connected to the logic control module 104 via a Universal Serial Bus (USB) interface. The USB interface is a USB2.0 interface, a USB3.0 interface, or the like.

[0100] The main module 101 is used to collect the point screen test data of the display module, and transmit the point screen test data and model identification information to the host computer 106. Optionally, the logic control module 104 is used to collect the point screen test data of the display module, and transmit the point screen test data and model identification information to the host computer 106 (for example, transmitted via a USB interface). The host computer 106 is used to determine the point screen test result of the display module according to the point screen test data and the model identification information. The host computer 106 is prefabricated with test conditions for display modules of different models. The host computer 106 is used to determine the corresponding test conditions according to the model identification information, and judge whether the point screen test data meets the test conditions, thereby determining the point screen test result. Optionally, the host computer 106 has a display screen, and the point screen test result can be displayed through the display screen. Or the host computer 106 can also transmit the point screen test result to the outside.

[0101] Optionally, the dot screen test device further includes an indicator light, which is connected to the main module 101. For example, the indicator light is connected to the logic control module 104. The host computer 106 is used to transmit the dot screen test result to the main module 101. The main module 101 is used to light up the indicator light according to the dot screen test result. For example, the logic control module 104 lights up the indicator light in a corresponding color according to the dot screen test result, or the indicator light includes multiple indicators, and the logic control module 104 lights up the corresponding indicator light according to the dot screen test result. For example, if the test result passes, the green indicator light is lit, and if it does not pass, the red indicator light is lit.

[0102] Optionally, the screen test device further includes a point screen test module, which is connected to the main module, and the point screen test module is connected to the module connection module. The main module 101 is used to control the point screen test module to perform a point screen test on the display module in the point screen state. The point screen test module is used to transmit the point screen test data to the main module to analyze the point screen test results.

[0103] Optionally, the point screen test includes an electrical test. The point screen test module includes an electrical sampling module 105, the electrical sampling module 105 is connected to the main module 101, and the electrical sampling module 105 is connected to the module connection module 102. Optionally, the electrical sampling module 105 is connected to the logic control module 104. For example, the electrical sampling module 105 is a module voltage / current sampling module.

[0104] The main module 101 is used to control the electrical sampling module 105 to perform electrical sampling on the display module in the dot screen state. The electrical sampling module 105 is used to transmit the electrical sampling results to the main module 101. For example, the module voltage / current sampling module Figure 1The signal interface 2 in collects the voltage / current sampling results of the display module. The main module 101 is used to transmit the electrical sampling results to the host computer 106. For example, the logic control module 104 is used to transmit the electrical sampling results to the host computer 106. The host computer 106 is used to determine the first point screen test result of the display module according to the electrical sampling results and the model identification information. The host computer 106 is prefabricated with electrical test conditions for display modules of different models. The host computer 106 is used to determine the corresponding electrical test conditions according to the model identification information, and to determine whether the electrical sampling results meet the corresponding electrical test conditions, thereby determining the first point screen test result. Optionally, the electrical sampling module 105 can be integrated in the main module 101, or it can be set independently.

[0105] Optionally, the point screen test includes an optical test. The point screen test module includes an optical test module 107, which is connected to the main module 101, and the optical test module 107 is connected to the module connection module 102. Optionally, the optical test module 107 is connected to the logic control module 104.

[0106] The main module 101 is used to control the optical test module 107 to perform an optical test on the display module in the dot screen state. The optical test module 107 is used to transmit the optical test result to the main module 101. For example, the optical test module 107 collects the optical signal of the display module and sends it to the logic control module 104 through the signal interface 3. The main module 101 is used to transmit the optical test result to the host computer 106. For example, the logic control module 104 is used to transmit the optical test result to the host computer 106. The host computer 106 is used to determine the second dot screen test result of the display module according to the optical test result and the model identification information. Optical test conditions for display modules of different models are prefabricated in the host computer 106. The host computer 106 is used to determine the corresponding optical test conditions according to the model identification information, and to determine whether the optical test result meets the corresponding optical test condition, thereby determining the second dot screen test result.

[0107] When both the first point screen test result and the second point screen test result exist, the host computer 106 is used to comprehensively judge the point screen test result according to the first point screen test result and the second point screen test result. For example, if both pass, the test is considered passed, and if one of them fails, the test is considered failed.

[0108] Optionally, the module connection module 102 includes a flip structure, which is used to fix the display module. Exemplarily, the display module is a display module of an AR or VR device, which is usually small in size. The flip cover of the flip structure can cover the display module when closed, thereby fixing the display module on the module connection module 102. The module connection module 102 is used to generate a first signal when powered on and the flip structure is opened. For example, when powered on, the logic control module 104 periodically detects whether the flip structure is opened, and generates a first signal when it is opened. The first signal may instruct the logic control module 104 to control the module connection module 102 and the display module to power off.

[0109] For example, Figure 3 It is a schematic diagram of a flip cover structure provided by an exemplary embodiment of the present application. Figure 3 (a) is a module connection module with the flip structure opened. Figure 3 (b) is a module connection module for closing the flip cover structure. The flip cover structure is provided with an adhesive magnet 301 and a spring contact 302. The adhesive magnet 301 is used to absorb the flip cover when it is closed and to fix the flip cover. The spring contact 302 can be used to detect whether the flip cover structure is opened.

[0110] Optionally, the module connection module 102 includes a travel button, and when the module connection module 102 is connected to the main module 101, the travel button is in a first position, and when the module connection module 102 is disconnected from the main module 101, the travel button is in a second position. The module connection module 102 is used to generate a second signal when powered on and the travel button is in the second position. For example, when powered on, the logic control module 104 periodically detects the position of the travel button, and generates a second signal when it is in the second position, that is, when the module connection module 102 is disconnected from the main module 101. The second signal can instruct the logic control module 104 to control the module connection module 102 and the display module to power off.

[0111] For example, Figure 4 It is a schematic diagram of a travel key provided by an exemplary embodiment of the present application. Figure 4 (a) is a schematic diagram of the external structure of the module connection module. Figure 4 (b) is a schematic diagram of the internal structure of the module connection module. A plug-in structure is provided at the connection between the module connection module and the main module, and the travel button 401 is provided corresponding to the plug-in structure. When the module connection module and the main module are connected through the plug-in structure, the travel button 401 is in the first position. When the module connection module is disconnected from the main module, the travel button 401 is in the second position. The position of the travel button 401 can be detected by the spring contact 402 provided in the module connection module corresponding to the travel button 401.

[0112] It should be noted that the method provided in the embodiment of the present application can be used for the point screen test of display modules with MIPI standard interfaces, and the embodiment of the present application does not limit this. The connection between different modules in the embodiment of the present application refers to an electrical connection, and the connection in the embodiment of the present application can also be a wireless connection.

[0113] For example, Figure 5 It is a product schematic diagram of a point screen testing device provided by an exemplary embodiment of the present application. Figure 5 (a) is the whole machine state where the main module 501 is connected to the module connection module 502, Figure 5 (b) is a separate state where the main module 501 is not connected to the module connection module 502. The main module 501 is provided with an optical module communication interface 503 for connecting to the optical test module 504. Figure 5 (c) is the whole machine + optical test module state where the main module 501 is connected to the module connection module 502 and the main module 501 is connected to the optical test module 504 .

[0114] In a specific example, the point screen test device includes a host computer, a display driver module, a logic control module, a voltage / current sampling module, an optical test module and a module connection module. The host computer is usually a PC or AP device, and its main function is to provide the image required for the test to the MIPI display module, and transmit the image to the display driver module through a standard video interface such as DP or HDMI, and then determine whether the optical and electrical (working voltage / current, etc.) test results corresponding to the MIPI display module are qualified. The display driver module includes a logic control unit and a bridge chip. The logic control module completes the work of MIPI display module model identification, relevant power-on timing of the modules in the point screen test device, parameter initialization configuration and different state mechanism judgment of the bridge chip. The bridge chip completes the MIPI signal conversion from DP or HDMI signal to the required image interface, and transmits it to the module connection module for point screen display. The function of the voltage / current sampling module is to sample the voltage and current parameters of the MIPI display module when it is working, and report the sampling results to the logic control module through the USB2.0 channel. The function of the optical test module is to test and report the optical parameters such as brightness and color coordinates of the MIPI display module when it is working. The function of the module connection module is to achieve the structure and circuit adaptation of different models of MIPI display modules and finally perform point screen display. Different MIPI display modules correspond to different module connection modules. At the same time, each module connection module has built-in model identification information of the corresponding MIPI display module. After connection, the logic control module completes the MIPI display module model identification and parameter initialization configuration by reading the built-in information.

[0115] To sum up, in the dot screen testing device provided in this embodiment, the module connection module is designed for display modules of different models, and has built-in model identification information of the corresponding display module. After connecting to the main module, the main module can complete the display module model identification and parameter initialization configuration by reading the built-in information, thereby realizing automatic testing of multiple display modules.

[0116] In addition, the host computer can judge the data obtained from the automatic test based on the model identification information to determine the test results. By lighting the indicator light according to the test results, the test results can be explicitly indicated. The module connection module is designed to be hot-swappable to reduce the risk of operators mistakenly performing live operations, which helps to achieve continuous testing of display modules of different models and improve the efficiency of module testing and verification. In addition, the module connection module is designed to be detachable, which can achieve the effect of "quick change" when testing display modules of different models.

[0117] Figure 6 is a flowchart of a point screen test method provided by an exemplary embodiment of the present application. The method can be applied to Figure 1 The point screen test device shown. The method comprises:

[0118] Step 602: The main module reads the model identification information through the module connection module.

[0119] The module connection module has built-in model identification information corresponding to the display module, and the model identification information is information used to indicate the model of the display module. Optionally, the point screen test device corresponds to n types of module connection modules corresponding to the display module models, and the model identification information built into the module connection module connected to the main module corresponds to the model of the currently connected display module. Optionally, the logic control module can read the model identification information through the module connection module.

[0120] Optionally, the dot screen test device includes a host computer, and the host computer can transmit an image used for the dot screen test to the main module. The dot screen test image is an image used by the display module for the dot screen test, including a picture or a video. The main module includes a display driver module, and the host computer transmits the dot screen test image to the display driver module.

[0121] When the point screen test device is powered on, the main module will detect the connection with the module connection module and the display module. The main module includes a logic control module, and the process of detecting the connection with the module connection module and the display module is performed by the logic control module.

[0122] Step 604: The main module determines a target parameter initialization configuration from among n parameter initialization configurations according to the model identification information.

[0123] The main module has built-in parameter initialization configurations corresponding to n types of model identification information, that is, parameter initialization configurations corresponding to n types of display module models. The model identification information corresponds to the target parameter initialization configuration, that is, the target parameter initialization configuration is the parameter initialization configuration corresponding to the model of the display module currently connected to the module connection module. The target parameter initialization configuration is used to configure the point screen test parameters of the display module, and the target parameter initialization configuration is used to control the point screen of the display module.

[0124] Optionally, the display driver module has built-in point screen parameters corresponding to n display module models. The logic control module transmits the model identification information to the display driver module. The display driver module determines the target point screen parameter from the n point screen parameters according to the model identification information, and then drives the display module to point screen according to the target point screen parameter.

[0125] Step 606: The main module controls the display module to perform point-to-point testing according to the target parameter initialization configuration.

[0126] The main module can perform point-screening on the display module according to the target parameter initialization configuration, thereby performing a point-screen test. Optionally, the display driver module determines the target point-screen parameters among n types of point-screen parameters according to the model identification information, and the target point-screen parameters include power supply parameters and display signal parameters. The display driver module supplies power to the display module according to the power supply parameters, and provides a display signal to the display module according to the display signal parameters to drive the display module to point the screen. Optionally, the display module includes a MIPI standard interface, and the display driver module includes a bridge chip. In the process of pointing the display module, the bridge chip processes the data of the point-screen test image according to the display signal parameters, thereby obtaining a display signal for the MIPI standard interface, and based on the display signal, the display module can be driven to display the point-screen test image.

[0127] Optionally, the main module collects the point screen test data of the display module, and transmits the point screen test data and model identification information to the host computer. The host computer determines the point screen test result of the display module according to the point screen test data and model identification information.

[0128] Optionally, the point screen test device further comprises a point screen test module. The main module controls the point screen test module to perform a point screen test on the display module in the point screen state, and then the point screen test module transmits the point screen test data to the main module to analyze the point screen test result.

[0129] The dot screen test includes an electrical test, and the dot screen test module includes an electrical sampling module. The electrical sampling module performs electrical sampling on the display module in the dot screen state. The electrical sampling module transmits the electrical sampling result to the main module. The main module transmits the electrical sampling result and the model identification information to the host computer. The host computer determines the first dot screen test result of the display module according to the electrical sampling result and the model identification information.

[0130] The point screen test includes an optical test, and the point screen test module includes an optical test module. The optical test module performs an optical test on the display module in the point screen state. The optical test module transmits the optical test result to the main module. The main module transmits the optical test result and the model identification information to the host computer. The host computer determines the second point screen test result of the display module according to the optical test result and the model identification information.

[0131] Optionally, when there are both the first point screen test result and the second point screen test result, the host computer comprehensively judges the point screen test result according to the first point screen test result and the second point screen test result. For example, if both pass, the test is considered passed, and if one of the two fails, the test is considered failed.

[0132] Optionally, the above-mentioned electrical test and optical test are performed automatically. When the logic control module detects that the module connection module and the display module are connected normally, and the display driving module has driven the display module to point the screen, it will instruct the electrical sampling module and / or the optical testing module to perform corresponding point screen tests on the point screen display module.

[0133] The dot screen test device also includes an indicator light. The host computer transmits the dot screen test result to the main module, and the main module lights up the indicator light according to the dot screen test result. For example, if the test result passes, the green indicator light is lit, and if it fails, the red indicator light is lit.

[0134] In response to the first signal, the main module controls the power-off of the module connection module and the display module. In response to the second signal, the main module controls the power-off of the module connection module and the display module. The first signal is generated when the device is powered on and the flip structure of the module connection module is opened. The flip structure is arranged in the module connection module for fixing the display module. The second signal is generated when the device is powered on and the travel button is in the second position. The travel button is arranged in the module connection module. When the module connection module is connected to the main module, the travel button is in the first position. When the module connection module is disconnected from the main module, the travel button is in the second position.

[0135] In a specific example, Figure 7 FIG. 1 is a schematic diagram of a point screen test process provided by an exemplary embodiment of the present application. Figure 7 As shown:

[0136] In steps S1-S2, the device is powered on, and the logic control module executes the module connection module and the MIPI display module connection detection to ensure that the hardware is correctly connected.

[0137] In steps S3-S5, the logic control module and the display driver module preset the initialization parameter information required by n groups of different MIPI display modules. After detecting that the hardware connection is correct, the logic control module confirms the corresponding MIPI display module model by reading the built-in information of the module connection module, and then Figure 1 The communication interface 1 in the chip is fed back to the point screen bridge chip to jointly complete the initialization configuration required for the point screen, such as the point screen EDID and driving voltage. Through this step, the identification and parameter initialization of different MIPI display modules are realized.

[0138] In steps S4-S7, after the module initialization parameter configuration is completed, the logic control module resets the bridge chip and the MIPI display module according to the timing requirements. After the reset is completed, it starts to receive the image signal sent by the host computer and starts the point screen test. The point screen test includes electrical testing and optical testing: the main body of the electrical test is the module voltage / current sampling module, which is used to detect whether there are abnormalities in the voltage, current and other parameters of the MIPI display module. The main body of the optical test is the optical test module, which is used to detect whether there are abnormalities in the optical parameters such as brightness and color coordinates displayed by the MIPI display module. The logic control module is respectively Figure 1 The signal interface 4 and the signal interface 3 in the test data are used to complete the summary processing of the test data, and the data is uploaded to the host computer through the USB2.0 channel for data storage, calculation and judgment of whether the results are qualified.

[0139] In step S8, the logic control module receives the test result processed by the host computer, and informs the operator of the test result by lighting up the corresponding indicator light, and the test of the MIPI display module is completed.

[0140] In steps S9-S11, due to the need for on-site testing or demonstration, there are often more than one or even more than one MIPI display module that needs to be verified, and continuous testing is required when applied. Since hot plugging (hot plugging) of MIPI display modules or module connection modules can easily cause module abnormalities or even screen burn-in, in order to prevent the risks brought by hot plugging by operators, this application provides a fool-proof design for hot plugging of the point screen test device (see Figure 3 , 4). A module pressing flap structure is set on the MIPI display module end, and a spring contact is set under the flap. When the flap is detected to be opened, the module connection module and the MIPI display module are immediately powered off according to the timing requirements, and the point screen test is performed after the replacement is detected. A travel button for replacement detection is set on the module connection module end, and a spring contact is set under the button. When the module connection module is detected to be disconnected, the module connection module and the MIPI display module are immediately powered off according to the timing requirements, and the point screen test is performed after the replacement is detected.

[0141] To sum up, in the method provided in this embodiment, the module connection module is designed for display modules of different models, and has built-in model identification information of the corresponding display module. After connecting to the main module, the main module can complete the display module model identification and parameter initialization configuration by reading the built-in information, thereby realizing automatic testing of multiple display modules.

[0142] In addition, the host computer can judge the data obtained by the automatic test based on the model identification information to determine the test results. By lighting the indicator light according to the test results, the test results can be clearly indicated. The module connection module is designed to prevent hot plugging, reducing the risk of operators mistakenly performing live operations, which helps to achieve continuous testing of display modules of different models and improve the efficiency of module test verification.

[0143] It should be noted that the sequence of the method steps provided in the embodiments of the present application can be appropriately adjusted, and the steps can be increased or decreased accordingly according to the circumstances. Any technician familiar with the technical field can easily think of the changed methods within the technical scope disclosed in the present application, and they should be included in the protection scope of the present application, so they will not be repeated here.

[0144] It should be noted that the terms used in the embodiments of the present disclosure are used to explain the embodiments of the present disclosure, and are not intended to limit the present disclosure. Unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should be the common meanings understood by people with ordinary skills in the field to which the present disclosure belongs.

[0145] For example, in the embodiments of the present disclosure, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless otherwise clearly defined.

[0146] Likewise, the words “a” or “an” and the like do not denote a limitation of quantity, but rather denote the presence of at least one.

[0147] Words such as “include” or “comprising” and the like mean that the elements or objects preceding “include” or “comprising” include the elements or objects listed after “include” or “comprising” and their equivalents, and do not exclude other elements or objects.

[0148] “Up”, “down”, “left” or “right” etc. are only used to indicate relative position relationship. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0149] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A point screen testing device, characterized in that: The point screen testing device comprises a main module and a module connection module, wherein the main module is connected to the module connection module; The module connection module is used to connect with the display module, and the module connection module has built-in model identification information corresponding to the display module, and the model identification information is used to indicate the model of the display module; The main module has built-in parameter initialization configurations corresponding to n display module models, and the target parameter initialization configuration in the n parameter initialization configurations matches the model of the display module. The target parameter initialization configuration is used to configure the point screen test parameters of the display module, and n is a positive integer greater than 1.

2. The point screen testing device according to claim 1, characterized in that: The main module is used to read the model identification information through the module connection module, and determine the target parameter initialization configuration among the n parameter initialization configurations according to the model identification information; The main module is also used to perform a screen dot test on the display module according to the target parameter initialization configuration.

3. The point screen testing device according to claim 2, characterized in that: The main module includes a logic control module and a display driver module, the display driver module has built-in point screen parameters corresponding to the n display module models, the logic control module is connected to the module connection module, the display driver module is connected to the module connection module, and the display driver module is connected to the logic control module; The logic control module is used to read the model identification information through the module connection module, and transmit the model identification information to the display driving module; The display driving module is used to determine the target dot screen parameter among the n types of dot screen parameters according to the model identification information, and drive the display module to dot the screen according to the target dot screen parameter.

4. The method according to claim 3, characterized in that The target point screen parameters include power supply parameters and display signal parameters; The display driving module is used to supply power to the display module according to the power supply parameters, and to provide a display signal to the display module according to the display signal parameters, so as to drive the display module to dot the screen.

5. The point screen testing device according to claim 3, characterized in that: The display module includes a MIPI standard interface, and the display driver module includes a bridge chip; The bridge chip is used to process the data of the point screen test image according to the display signal parameters to obtain a display signal for the MIPI standard interface.

6. The dot screen testing device according to any one of claims 1 to 5, characterized in that: The point screen test device also includes a host computer, which is connected to the main module; The main module is used to collect the point screen test data of the display module, and transmit the point screen test data and the model identification information to the host computer; The host computer is used to determine the point screen test result of the display module according to the point screen test data and the model identification information.

7. The point screen testing device according to claim 6, characterized in that: The point screen test device also includes an indicator light, which is connected to the main module; The host computer is used to transmit the point screen test result to the main module; The main module is used to light up the indicator light according to the point screen test result.

8. The dot screen testing device according to claim 6, characterized in that: The point screen test device further comprises a point screen test module, the point screen test module is connected to the main module, and the point screen test module is connected to the module connection module; The main module is used to control the point screen test module to perform a point screen test on the display module in the point screen state; The point screen test module is used to transmit the point screen test data to the main module.

9. The dot screen testing device according to claim 8, characterized in that: The point screen test module includes an electrical sampling module; The main module is used to control the electrical sampling module to perform electrical sampling on the display module in the dot screen state; The electrical sampling module is used to transmit the electrical sampling results to the main module; The main module is used to transmit the electrical sampling result and the model identification information to the host computer; The host computer is used to determine the first point screen test result of the display module according to the electrical sampling result and the electrical test condition corresponding to the model identification information.

10. The point screen testing device according to claim 8, characterized in that: The point screen test module includes an optical test module; The main module is used to control the electrical sampling module to perform an optical test on the display module in the dot screen state; The optical test module is used to transmit the optical test result to the main module; The main module is used to transmit the optical test result and the model identification information to the host computer; The host computer is used to determine the second point screen test result of the display module according to the optical test result and the optical test condition corresponding to the model identification information.

11. The dot screen testing device according to any one of claims 1 to 5, characterized in that: The module connection module includes a flip cover structure, and the flip cover structure is used to fix the display module; The module connection module is used to generate a first signal when the power is turned on and the flip structure is opened.

12. The dot screen testing device according to any one of claims 1 to 5, characterized in that: The module connection module includes a travel button, and when the module connection module is connected to the main module, the travel button is in a first position, and when the module connection module is disconnected from the main module, the travel button is in a second position; The module connection module is used to generate a second signal when power is turned on and the travel button is in the second position.

13. A point screen testing method, characterized in that: The method is applied to the point screen testing device according to any one of claims 1 to 12, and the method comprises: The main module reads the model identification information through the module connection module; The main module determines the target parameter initialization configuration from n parameter initialization configurations according to the model identification information; The main module controls the display module to perform a point-screen test according to the target parameter initialization configuration.

14. The method according to claim 13, characterized in that The method further comprises: In response to the first signal, the main module controls the module connection module and the display module to be powered off.

15. The method according to claim 13, characterized in that The method further comprises: In response to the second signal, the main module controls the module connection module and the display module to be powered off.

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