Display module brightness detection device
By designing the brightness detection device of the display module, and using the communication between the detection module and the MCU to achieve automated detection, the problems of low efficiency and high cost of traditional detection methods are solved, and fast and accurate brightness uniformity detection and full inspection capabilities are achieved.
Patent Information
- Application Number
- CN202420937224.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The brightness uniformity detection method of traditional LCD display modules is inefficient and costly, and cannot achieve full inspection, resulting in incomplete detection surfaces and cannot meet the industry's demand for high efficiency, low cost and full inspection capabilities.
A display module brightness detection device is designed, including a detection box and a detection component. The detection component is composed of multiple detection modules. It communicates with the detection module through the MCU to quickly obtain brightness data and judge brightness uniformity, realize automatic detection and reduce Possibility of manual intervention and computational errors.
It achieves rapid accuracy of brightness uniformity detection, and improves detection efficiency by 10 times, and can achieve full inspection of all products, reduce costs, and improves detection consistency and repeatability.
Smart Images
Figure CN222354168U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of backlight modules, and specifically to a display module brightness detection device. Background Art
[0002] The brightness uniformity of the LCD module is one of the important indicators to measure its display quality, especially in automotive products and consumer electronics products with high display quality requirements. The quality of brightness uniformity directly affects the visual effect and user experience of the product. Traditionally, high-precision instruments are used to detect the brightness uniformity of the display module. For example, the BM-7 device is used for detection. The detection method is: the brightness of each detection point is collected by the camera, and then all the detection data are recorded, and the detection data is manually screened and calculated. This is prone to calculation errors and low detection efficiency. In actual production, since the BM-7 device uses its camera to display each detection point of the module one by one, according to production needs, each display module is expected to be set with 9 detection points, and it takes 5 seconds to detect one detection point. This is not only efficient, but also due to the large workload, only samples can be extracted for detection, resulting in an incomplete detection surface. In addition, the price of the BM-7 device is relatively high.
[0003] It can be seen that the traditional brightness uniformity test method has problems such as low efficiency, high cost, and long test time. In order to meet the industry's demand for high efficiency, low cost, and full inspection capabilities, a simple and fast test equipment has been developed to improve production efficiency, reduce costs, and meet the quality requirements of full inspection. Utility Model Content
[0004] The purpose of the utility model is to avoid the shortcomings of the prior art and provide a display module brightness detection device, which can quickly detect the brightness uniformity of the display module and has the advantage of accurate detection.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A display module brightness detection device is provided, comprising:
[0007] The detection box is provided with an upper box body and a lower box body, wherein a positioning cavity is provided in the lower box body, and the positioning cavity is used to position the display module to be detected.
[0008] The upper box body is provided with a detection component, which can be embedded in the positioning cavity and connected to the display module in the positioning cavity.
[0009] The detection component includes several detection modules, and the several detection modules are respectively used to connect to the detection points on the display module. Each detection module is respectively connected to the MCU and transmits the brightness data back to the MCU. The MCU determines the brightness uniformity of each detection point of the display module and whether the specification parameters are met through the returned brightness data.
[0010] In some embodiments, nine detection modules are provided, and the nine detection modules are respectively disposed on the PCB board, and the PCB board is disposed on the upper box body.
[0011] In some embodiments, each detection module communicates with the MCU through IIC slave address identification, and the MCU controls each detection module to detect the corresponding detection sites in sequence.
[0012] In some embodiments, the detection module is an APDS9930 detection module.
[0013] In some embodiments, the upper box body is provided with a receiving cavity, the detection components are placed in the receiving cavity, a detection port is opened on the bottom surface of the receiving cavity, and each detection component is connected to the display module to be detected through the detection port.
[0014] In some embodiments, the inner side surface of the upper box body and the inner side surface of the lower box body overlap each other, the inner side surface of the upper box body is provided with a latch, and the inner side surface of the lower box body is provided with a socket corresponding to the latch.
[0015] In some embodiments, the lower box body is further provided with a switch, and the switch controls the on-off state of the display module to be detected.
[0016] Beneficial effects of the display module brightness detection device of the utility model:
[0017] The display module brightness detection device of the utility model uses the matching mode of the upper box body and the lower box body to respectively set the detection component and the display module to be tested in the upper box body and the lower box body, so that the detection module can be effectively and quickly connected to the detection site of the corresponding display module by covering the upper box body and the lower box body, and the detection module can obtain the luminosity at the corresponding detection site through the detection module, and the detection module directly transmits the detected luminosity data to the single-chip microcomputer for comparison and judgment, and can accurately output the results without manual screening and calculation. In addition, due to the fast signal transmission speed of the detection module, the detection result can be quickly obtained in 0.5s, and the detection efficiency is improved by 10 times compared with the traditional method, and all products can be fully inspected. Rapid brightness uniformity detection is achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1It is a structural schematic diagram of a display module brightness detection device according to a specific implementation mode of the utility model.
[0019] Figure 2 It is a schematic diagram of the detection sites of the display module according to a specific implementation mode of the present utility model.
[0020] Figure 3 It is a circuit diagram of a detection component of a specific implementation mode of the utility model.
[0021] Figure 4 It is a circuit diagram of a detection module in a detection assembly according to a specific implementation mode of the utility model.
[0022] Reference numerals:
[0023] 1. Upper box body; 2. Lower box body; 3. Positioning cavity; 4. Detection component; 5. Detection site; 6. MCU; 7. PCB board; 8. Pin; 9. Socket; 10. Switch; 11. Detection module. DETAILED DESCRIPTION
[0024] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0025] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0026] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0027] Example 1
[0028] The display module brightness detection device disclosed in this embodiment is as follows: Figures 1 to 4 As shown, it includes a detection box, the detection box is provided
[0029] The upper box body 1 is provided with a detection component 4, which can be embedded in the positioning cavity 3 and connected to the display module in the positioning cavity 3. The lower box body 2 is provided with a positioning cavity 3, and the positioning cavity 3 is used to position the display module to be detected.
[0030] The detection box is composed of an upper box body 1 and a lower box body 2, forming the main structure of the device. A positioning cavity 3 is located in the lower box body 2 and is used to fix the display module to be detected. A detection component 4 is embedded in the upper box body 1 and connected to the display module in the positioning cavity 3.
[0031] The detection component 4 includes a plurality of detection modules 11, and the plurality of detection modules 11 are respectively used to be connected to corresponding detection sites 5 on the display module. Each detection module 11 is respectively connected to the MCU6 and transmits brightness data back to the MCU6. The MCU6 determines the brightness uniformity of each detection site 5 of the display module and whether the specification parameters are met through the transmitted brightness data.
[0032] According to production needs, nine detection modules 11 are provided, and the nine detection modules 11 are respectively arranged on the PCB board 7 , and the PCB is arranged on the upper box body 1 .
[0033] Specifically, there are nine detection modules 11 in total, and the nine detection modules 11 correspond to the detection sites 5 set by the customer on the display module. The detection modules 11 are operated through the PCB.
[0034] Example 2
[0035] The display module brightness detection device disclosed in this embodiment is as follows: Figures 1 to 4 As shown, it includes a detection box, the detection box is provided
[0036] The upper box body 1 is provided with a detection component 4, which can be embedded in the positioning cavity 3 and connected to the display module in the positioning cavity 3. The lower box body 2 is provided with a positioning cavity 3, and the positioning cavity 3 is used to position the display module to be detected.
[0037] The detection box is composed of an upper box body 1 and a lower box body 2, forming the main structure of the device. A positioning cavity 3 is located in the lower box body 2 and is used to fix the display module to be detected. A detection component 4 is embedded in the upper box body 1 and connected to the display module in the positioning cavity 3.
[0038] The detection component 4 includes a plurality of detection modules 11, and the plurality of detection modules 11 are respectively used to be connected to corresponding detection sites 5 on the display module. Each detection module 11 is respectively connected to the MCU6 and transmits brightness data back to the MCU6. The MCU6 determines the brightness uniformity of each detection site 5 of the display module and whether the specification parameters are met through the transmitted brightness data.
[0039] Each detection module 11 in the detection component 4 corresponds to a detection site 5 on the display module. When the upper cover and the lower cover are closed, the detection module 11 can be connected to the detection site 5 to realize detection. The detection module 11 transmits the detected photometric data back to the MCU6 (microcontroller unit). The MCU6 receives the brightness data from the detection module 11 and processes it to output the detection result.
[0040] In this embodiment, each detection module 11 communicates with the MCU 6 through an IIC slave address, and the MCU 6 controls each detection module 11 to detect the corresponding detection sites 5 in sequence. The detection module 11 is an APDS9930 detection module 11.
[0041] Specifically, the IIC slave address realizes the detection module 11 to identify and communicate with the MCU6, and the APDS9930 detection module 11 is used to measure the brightness of the display module. The APDS9930 detection module 11 can quickly obtain the brightness without the need for a traditional camera.
[0042] The upper box body 1 is provided with a receiving cavity, in which the detection components 4 are placed, and a detection port is provided on the bottom surface of the receiving cavity, through which each detection component 4 is connected to a display module to be detected.
[0043] The accommodating cavity of the upper box body 1 is used to accommodate each detection module 11, and at the same time, the detection module 11 is connected to the display module to be detected through a pin through a window opened in the shell of the upper box body 1.
[0044] The inner side surface of the upper box body 1 and the inner side surface of the lower box body 2 overlap each other. The inner side surface of the upper box body 1 is provided with a latch 8, and the inner side surface of the lower box body 2 is provided with a socket 9 corresponding to the latch 8.
[0045] The matching relationship between the latch 8 and the socket 9 enables the detection module 11 on the upper box body 1 to be accurately aligned with the display module to be detected on the lower box body 2 .
[0046] The lower box body 2 is also provided with a switch 10, and the switch 10 controls the on / off state of the display module to be detected.
[0047] The detection box is provided with a power supply to facilitate the control of the display on-off state of the display module.
[0048] The above-mentioned display module brightness detection device is used to detect the brightness uniformity of the display module and ensure that it meets the specification parameters.
[0049] Components:
[0050] The working method of the upper detection device is: place the display module to be detected into the positioning cavity 3 of the lower box body 2. The upper box body 1 is aligned with the lower box body 2 and fixed by the pin 8 and the socket 9. The detection module 11 is connected to the corresponding position of the display module through the detection port at the bottom of the accommodating cavity. MCU6 establishes communication with each detection module 11 through the IIC protocol and identifies the slave address of each module. MCU6 sends instructions to control the detection module 11 to perform brightness detection in sequence. The detection module 11 collects brightness data and transmits the data to MCU6. MCU6 analyzes the brightness data to determine the brightness uniformity of the display module and whether it meets the specification requirements.
[0051] If necessary, the operator can control the power status of the display module through the switch 10 on the lower box body 2. It can be seen that automated detection improves efficiency. The APDS9930 detection module 11 is used to ensure measurement accuracy. MCU6 control realizes accurate data processing and analysis. The structure design is compact and easy to operate and maintain.
[0052] It can be seen that the above-mentioned detection device uses a specific detection module 11 (such as APDS9930) to provide accurate brightness data. Human intervention is reduced and the consistency and repeatability of detection are improved. Compared with traditional high-cost detection equipment, the device may have a lower cost, making full inspection more economical. Through simplified structural design, such as the coordination of the pin 8 and the socket 9, the operation of the equipment is easier. The modular design of the detection module 11 facilitates rapid deployment and use on the production line. Through the IIC communication protocol, the detection module 11 can be easily expanded or modified to meet different detection needs.
[0053] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.
[0054] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.
[0057] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A display module brightness detection device, characterized in that: include The detection box is provided with an upper box body and a lower box body, wherein a positioning cavity is provided in the lower box body, and the positioning cavity is used to position the display module to be detected. The upper box body is provided with a detection component, which can be embedded in the positioning cavity and connected to the display module in the positioning cavity. The detection component includes several detection modules, and the several detection modules are respectively used to connect to the detection points on the display module. Each detection module is respectively connected to the MCU and transmits the brightness data back to the MCU. The MCU determines the brightness uniformity of each detection point of the display module and whether the specification parameters are met through the returned brightness data.
2. The display module brightness detection device according to claim 1, characterized in that: Nine detection modules are provided, and the nine detection modules are respectively arranged on a PCB board, and the PCB board is arranged on the upper box body.
3. The display module brightness detection device according to claim 2, characterized in that: Each detection module communicates with the MCU through IIC slave address identification, and the MCU controls each detection module to detect the corresponding detection sites in sequence.
4. The display module brightness detection device according to claim 1, characterized in that: The detection module is an APDS9930 detection module.
5. The display module brightness detection device according to claim 1, characterized in that: The upper box body is provided with a receiving cavity, the detection components are placed in the receiving cavity, and a detection port is opened on the bottom surface of the receiving cavity, and each detection component is connected to the display module to be detected through the detection port.
6. The display module brightness detection device according to claim 5, characterized in that: The inner side surface of the upper box body and the inner side surface of the lower box body cover each other, the inner side surface of the upper box body is provided with a latch, and the inner side surface of the lower box body is provided with a socket corresponding to the latch.
7. The display module brightness detection device according to claim 5, characterized in that: The lower box body is also provided with a switch, and the switch controls the on-off state of the display module to be detected.