Display module measurement and control device

Abstract

The display module measurement and control device is used for production or maintenance of a display module and comprises a temperature control module and a display module clamp. The temperature control module comprises a main temperature control platform and a metal base; the main temperature control platform is used for obtaining energy from the outside to maintain the temperature required by the test; the metal base is arranged on the main temperature control platform and obtains energy from the main temperature control platform to maintain the temperature required by the test; the display module clamp is arranged on the metal base and used for pressing and tightly attaching a to-be-tested display module, namely an EPD module, to the metal base. The display module can be tightly attached, the temperature conduction is uniform, and the consistency of temperature testing is better.

Description

Technical Field

[0001] This application belongs to the field of display technology, specifically relating to a display module measurement and control device and a display device. Background Technology

[0002] Electronic paper ink displays are a type of display technology that utilizes electrophoretic display technology. They achieve the effect of displaying images by continuously applying an electric field of a driving waveform to each pixel through a driving IC chip, thereby driving the electronic paper particles. Electronic paper ink displays feature ultra-low power consumption, low-frequency display, and energy saving, making them widely applicable in price tags, advertising signs, and bus stop signs.

[0003] In existing technologies, electronic paper ink screens require optical performance testing at different temperature ranges during the production process to ensure module consistency.

[0004] In existing technologies, temperature control platforms are typically used to provide the required temperature for measurement and control. The temperature platform is a large plane, and placing other devices on it will affect the working performance of the temperature control platform.

[0005] EPD module manufacturing is subject to varying degrees of warping, with larger modules exhibiting more severe warping. This warping prevents the module from fully contacting the temperature control platform, resulting in temperature differences between the module's corners and other parts, thus affecting the overall optical performance testing. The challenge lies in achieving a completely flattened EPD module without compromising the performance of the temperature control platform, while still enabling reliable temperature control testing.

[0006] Definition: EPD is an abbreviation for "electronic paper display". Summary of the Invention

[0007] The technical problem to be solved in this application is to overcome the shortcomings of the existing technology, which is that the contact between the EPD module and the temperature control platform is not flat enough, resulting in uneven temperature. A display module measurement and control device is designed. Through the metal base and the display module clamp, the display module can be tightly attached, the temperature conduction is uniform, and the consistency of temperature testing is better.

[0008] The technical solution of this application to solve the above-mentioned technical problems is a display module testing and control device for the production or maintenance of display modules, including a temperature control module and a display module fixture; the temperature control module includes a main temperature control platform and a metal base; the main temperature control platform is used to obtain energy from the outside to maintain the temperature required for testing; the metal base is set on the main temperature control platform and obtains energy from the main temperature control platform to maintain the temperature required for testing; the display module fixture is set on the metal base and is used to press the display module to be tested, i.e., the EPD module, tightly onto the metal base.

[0009] The display module fixture includes track A, track B, pressure strip A, and pressure strip B; track A includes a slide groove A, and track B includes a slide groove B; pressure strip A includes mounting hole A1 and mounting hole B1; mounting hole A1 is fixed to slide groove A by fasteners; mounting hole B1 is fixed to slide groove B by fasteners; pressure strip B includes mounting hole A2 and mounting hole B2; mounting hole A2 is fixed to slide groove A by fasteners; mounting hole B2 is fixed to slide groove B by fasteners.

[0010] The display module is fixed to the metal base via the aforementioned pressure strips A and B; pressure strips A and B act on both ends of the display module respectively; the fasteners can slide in the aforementioned slide grooves A and B, and the distance between pressure strips A and B can be adjusted.

[0011] Tracks A and B are set on a metal base; the display module is fixed to the metal base via the aforementioned pressure strips A and B; pressure strips A and B act on both ends of the display module respectively; fasteners can slide in the aforementioned slide grooves A and B, and the distance between pressure strips A and B can be adjusted.

[0012] The aforementioned display module testing and control device also includes a display driving device, which is used to connect to the electrical signal of the display module under test and control, and drives the display module to display the test image.

[0013] The aforementioned display modules include monochrome e-ink screen modules, red-monochrome e-ink screen modules, and color e-ink screen modules.

[0014] The main temperature control platform in the aforementioned temperature control module also includes a digital display tube, which is used to display the current temperature.

[0015] The aforementioned display module measurement and control device also includes a measurement and control management module, which is connected to the aforementioned temperature control module via a wire. The measurement and control management module is used to set the temperature of the temperature control module.

[0016] The aforementioned measurement and control management module includes a clock module, a control module, and a measurement and control data storage module. The clock module and the control module are electrically connected. The clock module is used to provide time. The control module and the measurement and control data storage module are electrically connected. The measurement and control data storage module is used to store measurement and control data, including temperature information that needs to be set for different time periods. The control module is used to set the temperature of the temperature control module based on the aforementioned measurement and control data.

[0017] The measurement and control data storage module includes an external storage device interface, which supports the access of external storage devices, including USB flash drives or data cards.

[0018] One of the beneficial effects of the technical solution in this application is that the metal base has high thermal conductivity without affecting the working mechanism and structure of the main temperature control platform, making it more convenient and efficient.

[0019] One of the beneficial effects of the technical solution in this application is that the setting of the pressure strip in the display module fixture can press the display module tightly against the metal base, which can overcome the temperature deviation caused by insufficient edge contact due to warping of the display module.

[0020] One of the beneficial effects of the technical solution in this application is that the sliding grooves A and B provided on tracks A and B facilitate the flexible fixing of the two pressure strips, adapting to display modules of different sizes. This allows display modules of different sizes to fit tightly, reducing temperature deviations caused by edge contact issues.

[0021] One of the beneficial effects of the technical solution in this application is that the tracks A and B are set on the metal base, which makes the fixture structure simpler and easier to implement, and the fit between the display module and the metal base is tighter.

[0022] One of the beneficial effects of the technical solution in this application is that the display driving device drives the display module to display the test image, which facilitates the display of images during testing.

[0023] One of the beneficial effects of the technical solution in this application is that the display module includes a variety of types, which are suitable for testing EPD modules in various applications.

[0024] One of the beneficial effects of the technical solution in this application is that the digital display tube is used to display the current temperature, making it convenient to observe.

[0025] One of the beneficial effects of the technical solution in this application is that the measurement and control management module can control the test time, temperature, and data, which facilitates testing.

[0026] One of the beneficial effects of the technical solution in this application is that the external storage device interface facilitates data exchange with the outside world. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the display module control device. Figure 1 ;

[0028] Figure 2 This is a schematic diagram of the display module control device. Figure 2 ;

[0029] Figure 3 This is a partial schematic diagram of the display module's measurement and control device. Figure 1 ;

[0030] Figure 4 This is a partial schematic diagram of the display module's measurement and control device. Figure 2 ;

[0031] Figure 5 This is a schematic diagram of the display module measurement and control device. Figure 3 ;

[0032] Figure 6 This is a schematic diagram of the display module measurement and control device. Figure 4 ;

[0033] Figure 7 This is a schematic diagram of the display module measurement and control device. Figure 5 It showed Figure 6 Part of the structure;

[0034] Figure 8 This is a schematic diagram of the display module control device. Figure 3 . Detailed Implementation

[0035] The embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0036] It should be noted that the following description of preferred embodiments of this application does not constitute any limitation on this application. The description of preferred embodiments is merely an illustration of the general principles of this application. The embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and technical features numbered with Arabic numerals 1, 2, 3, etc., and designations such as "A" and "B," are used for descriptive purposes only, for ease of explanation, and do not represent a temporal or spatial order; they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first," "second," and numbered with Arabic numerals 1, 2, 3, etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "several" means two or more, unless otherwise expressly and specifically defined.

[0038] like Figure 1 and Figure 2As shown, an embodiment of the display module testing and control device is used for the production or maintenance of display modules. It includes a temperature control module and a display module fixture. The temperature control module includes a main temperature control platform and a metal base. The main temperature control platform is used to obtain energy from the outside to maintain the temperature required for testing. The metal base is placed on the main temperature control platform and obtains energy from the main temperature control platform to maintain the temperature required for testing. The display module fixture is placed on the metal base and is used to press the display module to be tested, i.e., the EPD module, tightly onto the metal base.

[0039] like Figure 3 and Figure 4 As shown, an embodiment of the display module measurement and control device is illustrated. The display module fixture includes rail A, rail B, pressure bar A, and pressure bar B. Rail A includes a slide groove A, and rail B includes a slide groove B. Pressure bar A includes mounting hole A1 and mounting hole B1. Mounting hole A1 is fixed to slide groove A by fasteners. Mounting hole B1 is fixed to slide groove B by fasteners. Pressure bar B includes mounting hole A2 and mounting hole B2. Mounting hole A2 is fixed to slide groove A by fasteners. Mounting hole B2 is fixed to slide groove B by fasteners.

[0040] like Figure 3 and Figure 4 As shown in the embodiment of the display module measurement and control device, the display module fixture includes track A and track B. The display module is fixed to the metal base above by the aforementioned pressure strips A and B. Pressure strips A and B act on both ends of the display module respectively. Fasteners can slide in the aforementioned slide grooves A and B, and the distance between pressure strips A and B can be adjusted.

[0041] like Figure 5 , Figure 6 and Figure 7 As shown in the embodiment of the display module measurement and control device, tracks A and B are set on a metal base; the display module is fixed above the metal base by the aforementioned pressure strips A and B; pressure strips A and B act on both ends of the display module respectively; fasteners can slide in the aforementioned slide grooves A and B, and the distance between pressure strips A and B can be adjusted.

[0042] In embodiments of the display module testing and control device not shown in the accompanying drawings, a display driving device is also included. The display driving device is used to connect to the display module under test via electrical signals and drives the display module to display test images.

[0043] In embodiments of the display module measurement and control device not shown in the accompanying drawings, the aforementioned display module includes a monochrome e-ink screen module, a red-and-white e-ink screen module, and a color e-ink screen module.

[0044] like Figure 6 As shown in the embodiment of the display module measurement and control device, the main temperature control platform in the above-mentioned temperature control module also includes a digital display tube, which is used to display the current temperature.

[0045] like Figure 4 As shown in the embodiment of the display module measurement and control device, the digital display tube is set on one side of the metal base and is used to display the current temperature.

[0046] like Figure 8 As shown in the figure, an embodiment of the display module measurement and control device also includes a measurement and control management module, which is connected to the temperature control module via a wire. The measurement and control management module is used to set the temperature of the temperature control module.

[0047] In an embodiment of the display module measurement and control device not shown in the accompanying drawings, the aforementioned measurement and control management module includes a clock module, a control module, and a measurement and control data storage module; the clock module and the control module are electrically connected; the clock module is used to provide time; the control module and the measurement and control data storage module are electrically connected; the measurement and control data storage module is used to store measurement and control data, which includes temperature information that needs to be set for different time periods; the control module is used to set the temperature of the temperature control module according to the aforementioned measurement and control data.

[0048] In an embodiment of the display module measurement and control device not shown in the accompanying drawings, the measurement and control data storage module includes an external storage device interface, supporting the access of external storage devices, including USB flash drives or data cards.

[0049] EPD modules may experience varying degrees of warping during production, with larger modules exhibiting more severe warping. This warping prevents the module from fully contacting the temperature control platform, resulting in temperature differences between the module's corners and other parts, thus affecting the overall optical performance testing of the module.

[0050] The display module measurement and control device in this application is a tooling fixture that solves the problem of uneven temperature at the corners of the module; it solves the corner problems of EPD modules at different temperature ranges; during the production of EPD modules, it is necessary to test the optical characteristics of different temperature ranges to ensure the consistency of the modules.

[0051] In this application, a metal base is added to the temperature control platform, and the module is placed on the base. Two pressure strips are used to press the module firmly onto the base. The display module can be completely attached to the fixture by the pressure strips, and there is no temperature difference in the entire module, which can support complete temperature testing.

[0052] like Figure 5In the illustrated embodiment, module 2 is placed on base 1, which is a metal base that facilitates heat conduction. Base 1 has two grooves, namely slide groove A and slide groove B, each with two fasteners, namely screws 4. A pressure strip 3 presses down on the edge of module 1, and nuts 5 secure the pressure strip 3, thus flattening the display module 1. The entire fixture is then placed on a temperature control platform 6, which is the main temperature control platform; the temperature is adjusted through the temperature control platform to reach the required testing temperature range.

[0053] As shown in the above figures, the above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of the application specification and figures, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A display module measurement and control device, used for the production or maintenance of display modules, characterized in that, Includes temperature control module and display module fixture; The temperature control module includes a main temperature control platform and a metal base; The main temperature control platform is used to obtain energy from the outside to maintain the temperature required for testing; The metal base is mounted on the main temperature control platform and obtains energy from the main temperature control platform to maintain the temperature required for the test. The display module fixture is mounted on a metal base and is used to press the display module to be tested, i.e., the EPD module, tightly against the metal base.

2. The display module measurement and control device according to claim 1, characterized in that, The display module fixture includes track A, track B, pressure strip A, and pressure strip B; Track A includes chute A, and track B includes chute B; Pressure strip A includes mounting hole A1 and mounting hole B1; Mounting hole A1 is fixed to slide groove A by fasteners; Mounting hole B1 is fixed to slide groove B by fasteners; Pressure strip B includes mounting hole A2 and mounting hole B2; Mounting hole A2 is fixed to slide groove A by fasteners; Mounting hole B2 is fixed to slide groove B by fasteners.

3. The display module measurement and control device according to claim 2, characterized in that, The display module is fixed to the metal base via the pressure strips A and B; Pressure strips A and B act on both ends of the display module, respectively; The fastener can slide in the slide groove A and slide groove B, and the distance between the pressure strip A and pressure strip B can be adjusted.

4. The display module measurement and control device according to claim 2, characterized in that, Tracks A and B are set on a metal base; the display module is fixed to the metal base via pressure strips A and B; pressure strips A and B act on both ends of the display module respectively; The fastener can slide in the slide groove A and slide groove B, and the distance between the pressure strip A and pressure strip B can be adjusted.

5. The display module measurement and control device according to claim 1, characterized in that, It also includes a display driver, which is used to connect to the display module under test via electrical signals and drive the display module to display the test image.

6. The display module measurement and control device according to claim 1, characterized in that, The display module includes a monochrome e-ink screen module, a red-monochrome e-ink screen module, and a color e-ink screen module.

7. The display module measurement and control device according to claim 1, characterized in that, The main temperature control platform in the temperature control module also includes a digital display tube, which is used to display the current temperature.

8. The display module measurement and control device according to claim 1, characterized in that, It also includes a measurement and control management module, which is connected to the temperature control module via a wire. The measurement and control management module is used to set the temperature of the temperature control module.

9. The display module measurement and control device according to claim 8, characterized in that, The measurement and control management module includes a clock module, a control module, and a measurement and control data storage module; The clock module is electrically connected to the control module; the clock module is used to provide time. The control module and the measurement and control data storage module are electrically connected; the measurement and control data storage module is used to store measurement and control data, which includes temperature information that needs to be set for different time periods. The control module is used to set the temperature of the temperature control module based on the measurement and control data.

10. The display module measurement and control device according to claim 9, characterized in that, The measurement and control data storage module includes an external storage device interface, which supports the access of external storage devices, including USB flash drives or data cards.

Images