A detection device for high temperature and high humidity environment used for display screen aging

Abstract

The embodiment of the present application discloses a detection device for high temperature and high humidity environment of display screen aging, which can effectively solve the problem of signal cable being limited in passing through the detection furnace, and ensure the signal quality during the test and the normal progress of the test. The present application includes: a signal generating device is arranged outside the detection furnace, a converter and a user transfer plate assembly are installed inside the detection furnace, the signal generating device is electrically connected to the converter through a long cable, the converter is electrically connected to the user transfer plate assembly through a short cable, the signal generating device is used to generate a long cable signal and send it to the converter, the converter is used to convert the long cable signal into a short cable signal and send it to the user transfer plate assembly, the user transfer plate assembly is connected to the screen body to be detected, and the user transfer plate assembly is used to send the short cable signal to the screen body to be detected.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of detection equipment, and in particular to a detection equipment applied to a high temperature and high humidity environment of display screen aging. Background Art

[0002] Before the display screens used in various smart devices are put into use, they need to be tested for aging. The aging test of the display screen is to place the display screen to be tested in the test temperature and humidity. The temperature and humidity aging test in the design and production process of the display screen is a basic quality control procedure requirement. Among them, the temperature range required for display screen aging is generally -20℃ to +85℃, and the humidity range is 20% to 95% relative humidity. At present, the existing testing method is to place the display drive signal source outside the aging furnace cavity, and connect the power signal and drive signal through the through hole to the adapter board in the furnace cavity through a dedicated cable, and then connect the screen to be tested to the adapter board to obtain power and drive signals, so as to obtain experimental data on display screen aging.

[0003] The above-mentioned solution is to place the display driving signal source outside the aging furnace body, so that the display driving signal source does not need to be affected by the high temperature and high humidity environment. The signal cable needs a long length to pass through the insulation wall of the furnace body. This solution is no problem for most of the current display interface applications, but for the new generation of ultra-high-speed display interface, the signal cable length allowed by the ultra-high-speed interface is limited, so the length of the signal cable between the display driving signal source and the aging furnace cavity is limited, and the signal quality during the test cannot be guaranteed, resulting in the inability to conduct the test. Summary of the invention

[0004] The embodiment of the present application provides a detection device for high temperature and high humidity environments where display screens age. A long cable is used to send the long cable signal as a signal to a detection furnace, and then the long cable signal is converted into a short cable signal output required by the customer through a converter. This can effectively solve the problem of limited signal cable passage through the detection furnace, thereby ensuring the signal quality during the test and the normal progress of the test.

[0005] The present application provides a detection device for a high temperature and high humidity environment for aging of a display screen, comprising: a signal generating device, a converter, a user transfer plate assembly and a detection furnace; the signal generating device is arranged outside the detection furnace, the converter and the user transfer plate assembly are installed inside the detection furnace, the signal generating device is electrically connected to the converter via a long cable, the converter is electrically connected to the user transfer plate assembly via a short cable, the signal generating device is used to generate a long cable signal and send it to the converter, the converter is used to convert the long cable signal into a short cable signal and send it to the user transfer plate assembly, the user transfer plate assembly is connected to a screen body to be detected, and the user transfer plate assembly is used to send the short cable signal to the screen body to be detected.

[0006] Optionally, the converter is internally installed with a transfer-in board, a bus conversion unit, a first bridge chip, a second bridge chip, a first transfer-out board and a second transfer-out board, the transfer-in board is electrically connected to the signal generating device through a long cable, the transfer-in board is electrically connected to the bus conversion unit, the first bridge chip and the second bridge chip are electrically connected to the bus conversion unit respectively, the first bridge chip is electrically connected to the first transfer-out board, and the second bridge chip is electrically connected to the second transfer-out board.

[0007] Optionally, the user transfer plate assembly includes a first user transfer plate and a second user transfer plate, the first user transfer plate is connected to the first roll-out plate via a short cable, and the second user transfer plate is connected to the second roll-out plate via a short cable.

[0008] Optionally, the converter further includes a controller unit, which is electrically connected to the signal generating device, and is used to detect temperature and humidity information inside the converter and send the detected information to the signal generating device.

[0009] Optionally, the housing of the converter is composed of a bottom shell and an upper cover, the bottom shell and the upper cover are connected in a detachable manner, and a sealing rubber ring is installed at the connection between the bottom shell and the upper cover.

[0010] Optionally, an air inlet and an air outlet are provided on the bottom shell of the converter, the air inlet is connected to the air inlet pipe, the air outlet is connected to the air outlet pipe, the air inlet pipe is connected to the air compressor, and the connection between the air inlet pipe and the air inlet as well as the connection between the air outlet pipe and the air outlet are both coated with sealant.

[0011] Optionally, the transfer-in plate is installed on one side of the connection between the bottom shell and the upper cover in the converter, and the first transfer-out plate and the second transfer-out plate are installed on the other side of the connection between the bottom shell and the upper cover in the converter, and sealing rubber rings are installed on the transfer-in plate, the first transfer-out plate, the second transfer-out plate and the connection.

[0012] Optionally, a throttle valve is installed on the air intake pipe.

[0013] Optionally, the user transfer plate assembly is electrically connected to a power supply assembly, and the signal generating device is electrically connected to the power supply assembly.

[0014] Optionally, an opening is provided on the detection furnace, and the air inlet pipe, the air outlet pipe and the long cable are connected to the converter through the opening.

[0015] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0016] A signal generating device, a converter, a user transfer plate assembly and a detection furnace are provided, wherein the signal generating device is provided outside the detection furnace, the converter and the user transfer plate assembly are installed inside the detection furnace, the signal generating device is electrically connected to the converter through a long cable, and the converter is electrically connected to the user transfer plate assembly through a short cable; wherein the signal generating device is used to generate a long cable signal and send it to the converter, the converter is used to convert the long cable signal into a short cable signal, and send it to the user transfer plate assembly, the user transfer plate assembly is connected to a screen to be detected, and the user transfer plate assembly is used to send the short cable signal to the screen to be detected; from the above, it can be seen that the connection between the signal generating device and the converter inside the detection furnace is through a long cable, thereby effectively solving the problem of the length limitation of the signal cable to the detection furnace, and the converter can convert the long cable signal into a short cable signal and then output it to the outside, thereby ensuring the signal quality during the test and the normal progress of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a connection diagram of the detection equipment used in the high temperature and high humidity environment of display screen aging in this application;

[0018] Figure 2 Another connection diagram of the detection device for high temperature and high humidity environment of display screen aging applied in the present application;

[0019] Figure 3 This is a schematic diagram of the structure inside the converter in the detection equipment for display screen aging in a high temperature and high humidity environment used in the present application. DETAILED DESCRIPTION

[0020] For the new generation of ultra-high-speed display screen interfaces, the length of the signal cable allowed by the ultra-high-speed interface is limited, so the length of the signal cable between the display drive signal source and the aging furnace cavity is limited, and the signal quality during the test cannot be guaranteed, resulting in the inability to conduct the test.

[0021] Based on this, the present application provides a detection device for high temperature and high humidity environments where display screens age. A long cable is used to take the long cable signal as the signal to the detection furnace, and then the long cable signal is converted into the short cable signal output required by the customer through a converter. This can effectively solve the problem of limited signal cable passage through the detection furnace, thereby ensuring the signal quality during the test and the normal progress of the test.

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] See also Figures 1 to 3 The present application provides a detection device for a high temperature and high humidity environment for display screen aging, comprising: a signal generating device 1, a converter 3, a user transfer plate assembly and a detection furnace 2; the signal generating device 1 is arranged outside the detection furnace 2, the converter 3 and the user transfer plate assembly are installed inside the detection furnace 2, the signal generating device 1 is electrically connected to the converter 3 through a long cable 38, and the converter 3 is electrically connected to the user transfer plate assembly through a short cable 39, the signal generating device 1 is used to generate a long cable signal and send it to the converter 3, the converter 3 is used to convert the long cable signal into a short cable signal and send it to the user transfer plate assembly, the user transfer plate assembly is connected to the screen body 7 to be detected, and the user transfer plate assembly is used to send the short cable signal to the screen body 7 to be detected.

[0024] In the embodiment of the present application, in order to meet the aging test requirements of the display screen with a new generation of ultra-high-speed interface, the present application can simultaneously achieve the two requirements of high-speed interface short cable 39 connection and stable operation in high temperature and high humidity environment without major modifications to the furnace body and the signal source itself. In addition, it is also necessary to meet the compatibility requirements of different screen bodies of customers under test, the maintainability requirements of the overall system and the replaceability requirements of vulnerable parts. More specifically, the signal generating device 1 is placed outside the furnace body of the detection furnace 2, wherein the signal generating device 1 is placed outside the furnace body of the detection furnace 2 instead of being placed inside the detection furnace 2 mainly to protect the signal generating device 1 from the influence of the internal temperature of the detection furnace 2, because the signal generating device 1 itself consumes a lot of power, plus the internal temperature of the detection furnace 2, if the signal generating device 1 is placed inside the detection furnace 2, it is necessary to cool the signal generating device 1, but the refrigeration load required for cooling the entire signal generating device 1 is also very large, as well as the space required for covering the signal source, the security processing of the AC cable in a high temperature and high humidity environment, etc., so the overall implementation plan is relatively difficult.

[0025] Based on the above-mentioned solution of placing the signal generating device 1 inside the detection furnace 2, it is more troublesome to implement, so this solution is adopted. This solution is to place the signal generating device 1 outside the detection furnace 2, and place a converter 3 and a user transfer board assembly inside the detection furnace 2. The signal generating device 1 and the converter 3 are connected through a long cable 38. The long cable 38 transmits a long cable signal. After the converter 3 receives the long cable signal, it can convert the long cable signal into a short cable signal. Since the user transfer board assembly is connected to the screen to be tested, and the user transfer board assembly is electrically connected to the converter 3, after the user transfer board assembly obtains the short cable signal sent by the converter 3, it is used to test the screen to be tested 7. It should be noted that the interface used to connect the long cable signal is mainly LVDS / EDP / MIPI D-PHY, etc., and the interface used to connect the short cable signal is mainly RGB / MIPI C-PHY, etc., since the signal to be transmitted needs to be transmitted in the cable, the shorter the distance the signal is transmitted in the cable, the higher the signal quality will be. Therefore, in practical applications, the signal transmitted to the detected screen 7 is mainly a short cable signal. In this application, the types of the long cable 38 interface and the short cable 39 interface are not specifically limited.

[0026] In an embodiment of the present application, a signal generating device 1, a converter 3, a user transfer plate assembly and a detection furnace 2 are provided, wherein the signal generating device 1 is provided outside the detection furnace 2, the converter 3 and the user transfer plate assembly are installed inside the detection furnace 2, the signal generating device 1 is electrically connected to the converter 3 through a long cable 38, and the converter 3 is electrically connected to the user transfer plate assembly through a short cable 39; wherein the signal generating device 1 is used to generate a long cable signal and send it to the converter 3, the converter 3 is used to convert the long cable signal into a short cable signal, and send it to the user transfer plate assembly, the user transfer plate assembly is connected to the screen body 7 to be detected, and the user transfer plate assembly is used to send the short cable signal to the screen body 7 to be detected; from the above, it can be seen that the connection between the signal generating device 1 and the converter 3 inside the detection furnace 2 is connected through the long cable 38, thereby effectively solving the problem of the length limitation of the signal cable to the detection furnace 2, and the converter 3 can convert the long cable signal into a short cable signal and then output it to the outside, thereby ensuring the signal quality during the test and the normal progress of the test.

[0027] Optionally, the converter 3 is internally installed with a transfer-in board 31, a bus conversion unit 32, a first bridge chip 33, a second bridge chip 35, a first transfer-out board 34 and a second transfer-out board 36, the transfer-in board 31 is electrically connected to the signal generating device 1 through a long cable 38, the transfer-in board 31 is electrically connected to the bus conversion unit 32, the first bridge chip 33 and the second bridge chip 35 are electrically connected to the bus conversion unit 32 respectively, the first bridge chip 33 is electrically connected to the first transfer-out board 34, and the second bridge chip 35 is electrically connected to the second transfer-out board 36; the user transfer board assembly includes a first user transfer board 5 and a second user transfer board 6, the first user transfer board 5 is connected to the first transfer-out board 34 through a short cable 39, and the second user transfer board 6 is connected to the second transfer-out board 36 through a short cable 39.

[0028] In the embodiment of the present application, the converter 3 converts the long cable signal output by the signal generating device 1 into a short cable signal and then outputs it externally. More specifically, the converter 3 includes a transfer-in board 31, a bus conversion unit 32, a first bridge chip 33, a second bridge chip 35, a first transfer-out board 34 and a second transfer-out board 36, wherein the transfer-in board 31 is connected to the signal generating device 1 through a long cable 38, and the signal generating device 1 transmits a long cable signal to the transfer-in board 31. After acquiring the long cable signal, the transfer-in board 31 sends it to the bus conversion unit 32 through the transfer-in board 31 connector transmitter. In the element 32, the bus conversion unit 32 converts the long cable signal into a signal format that can be received by the bridge chip and sends it to the first bridge chip 33 and the second bridge chip 35; the first bridge chip 33 and the second bridge chip 35 then convert the received signal into a short cable signal required by the detected screen 7 and output it to the first transfer board 34 and the second transfer board 36 accordingly. The first transfer board 34 and the second transfer board 36 transmit the short cable signal to the first user transfer board 5 and the second user transfer board 6 through the short cable 39, wherein the first user transfer board 5 and the second user transfer board 6 are connected to the detected screen 7.

[0029] Since the aging test of the display screen needs to be carried out in a suitable temperature and humidity environment, when the converter 3 is working inside the detection furnace 2, the converter 3 itself may generate a large load and generate a large amount of heat. Under normal working conditions, it is not easy to detect. However, after the converter 3 has been running for a long time, it may affect the test environment inside the detection furnace 2.

[0030] Based on this, the present application provides the following solution: optionally, the converter 3 also includes a controller unit 37, which is electrically connected to the signal generating device 1. The controller unit 37 is used to detect the temperature and humidity information inside the converter 3 and send the detected information to the signal generating device 1.

[0031] In the embodiment of the present application, the controller unit 37 is connected to the signal generating device 1, and the controller unit 37 is used to detect the temperature and humidity conditions inside the converter 3. After obtaining the temperature and humidity conditions, the obtained information is sent to the signal generating device 1. It should be noted that in order to reduce the load of the insulation system, the circuit inside the converter 3 requires low power consumption to ensure that the converter 3 can work normally.

[0032] In actual working conditions, the converter 3 may be overloaded for a period of time, which may cause the temperature inside the converter 3 to rise. In addition, the circuit structure of the converter 3 in the cavity of the detection furnace 2 is relatively complex, and some components may not be able to adapt to the high temperature and high humidity environment in the furnace cavity.

[0033] Based on this, the present application provides the following scheme. Optionally, the shell of the converter 3 is composed of a bottom shell 302 and an upper cover 301. The connection between the bottom shell 302 and the upper cover 301 is a detachable connection, and a sealing rubber ring is installed at the connection between the bottom shell 302 and the upper cover 301; an air inlet pipe port 901 and an air outlet pipe port 902 are provided on the bottom shell of the converter 3, the air inlet pipe port 901 is connected to the air inlet pipe 91, the air outlet pipe port 902 is connected to the air outlet pipe 92, the air inlet pipe 91 is connected to the air compressor 8, and the connection between the air inlet pipe 91 and the air inlet pipe port 901 and the connection between the air outlet pipe 92 and the air outlet pipe port 902 are both provided with sealant. ; The transfer-in plate 31 is installed on one side of the connection between the bottom shell 302 and the upper cover 301 in the converter 3, and the first transfer-out plate 34 and the second transfer-out plate 36 are installed on the other side of the connection between the bottom shell 302 and the upper cover 301 in the converter 3, and sealing rubber rings are installed on the transfer-in plate 31, the first transfer-out plate 34 and the second transfer-out plate 36 and the connection; a throttle valve is installed on the air intake pipe 91; the user transfer plate assembly is electrically connected to the power supply assembly 4, and the signal generating device 1 is electrically connected to the power supply assembly 4; an opening is provided on the detection furnace 2, and the air intake pipe 91, the air outlet pipe 92 and the long cable 38 are all connected to the converter 3 through the opening.

[0034] In the embodiment of the present application, the connection method between the bottom shell 302 and the upper cover 301 of the converter 3 is detachable, wherein the bottom shell of the converter 3 is made of insulating material or aluminum alloy plus insulating pads. Here, the material of the bottom shell of the converter 3 is not specifically limited, wherein a transfer plate 31, a first transfer plate 34 and a second transfer plate 36 are installed at the connection between the bottom shell 302 and the upper cover 301 in the converter 3, and a sealing rubber ring is padded in the connection to ensure the air tightness inside the converter 3, and an air inlet pipe port 901 and an air outlet pipe port 902 are arranged on the bottom shell of the converter 3, an air inlet pipe 91 is installed on the air inlet pipe port 901, an air outlet pipe 92 is installed on the air outlet pipe port 902, and an air compressor 8 is installed on the air inlet pipe 91, and the air compressor 8 enters the converter from the air inlet pipe 91 to the converter Inside the bottom shell of the converter 3, the main purpose of introducing compressed air into the converter 3 is to keep the bottom shell warm and prevent the high / low temperature and high humidity environment in the furnace from affecting the converter 3 circuit. Since the connections between the air inlet pipe 91 and the air outlet pipe 92 and the bottom shell are sealed with sealing rubber rings, the inside of the bottom shell of the converter 3 is in a relatively sealed state. The compressed air in the compressed air machine enters the bottom shell of the converter 3 from the air inlet pipe 91. The compressed air will drive the air circulation inside the bottom shell of the converter 3, and the compressed air will then be discharged from the outlet. It should be noted that in order to ensure that the compressed air flowing into the bottom shell of the converter 3 is relatively smooth, a throttle valve can be installed on the air inlet pipe 91, so as to ensure the temperature of the circuit part of the bottom shell of the converter 3, so that the test can proceed smoothly.

[0035] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0036] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0037] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0038] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0039] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), disk or optical disk and other media that can store program code.

Claims

1. A detection device for high temperature and high humidity environment of display screen aging, characterized in that: include: Signal generating equipment, converters, user transfer board assemblies and detection furnaces; The signal generating device is arranged outside the detection furnace, the converter and the user transfer plate assembly are installed inside the detection furnace, the signal generating device is electrically connected to the converter through a long cable, and the converter is electrically connected to the user transfer plate assembly through a short cable, the signal generating device is used to generate a long cable signal and send it to the converter, the converter is used to convert the long cable signal into a short cable signal, and send it to the user transfer plate assembly, the user transfer plate assembly is connected to the detected screen, and the user transfer plate assembly is used to send the short cable signal to the detected screen, the converter is installed with a transfer-in board, a bus conversion unit, a first bridge chip, a second bridge chip, a first transfer-out board and a second transfer-out board, the transfer-in board is connected to the detected screen through a long cable The signal generating device is electrically connected, the transfer-in board is electrically connected to the bus conversion unit, the first bridge chip and the second bridge chip are electrically connected to the bus conversion unit respectively, the first bridge chip is electrically connected to the first transfer-out board, the second bridge chip is electrically connected to the second transfer-out board, the user transfer board assembly includes a first user transfer board and a second user transfer board, the first user transfer board is connected to the first transfer-out board through a short cable, the second user transfer board is connected to the second transfer-out board through a short cable, the converter also includes a controller unit, the controller unit is electrically connected to the signal generating device, the controller unit is used to detect the temperature and humidity information inside the converter, and send the detected information to the signal generating device.

2. The detection device for high temperature and high humidity environment of display screen aging according to claim 1 is characterized in that: The housing of the converter is composed of a bottom shell and an upper cover. The bottom shell and the upper cover are connected in a detachable manner. A sealing rubber ring is installed at the connection between the bottom shell and the upper cover.

3. The detection device for high temperature and high humidity environment of display screen aging according to claim 2 is characterized in that: An air inlet and an air outlet are provided on the bottom shell of the converter, the air inlet is connected to the air inlet pipe, the air outlet is connected to the air outlet pipe, the air inlet pipe is connected to the air compressor, and the connection between the air inlet pipe and the air inlet and the connection between the air outlet pipe and the air outlet are both coated with sealant.

4. The detection device for high temperature and high humidity environment of display screen aging according to claim 2 is characterized in that: The transfer-in plate is installed on one side of the connection between the bottom shell and the upper cover in the converter, and the first transfer-out plate and the second transfer-out plate are installed on the other side of the connection between the bottom shell and the upper cover in the converter, and sealing rubber rings are installed on the transfer-in plate, the first transfer-out plate, the second transfer-out plate and the connection.

5. The detection device for high temperature and high humidity environment of display screen aging according to claim 3 is characterized in that: A throttle valve is installed on the air intake pipeline.

6. The detection device for high temperature and high humidity environment for display screen aging according to any one of claims 1 to 5, characterized in that: The user transfer plate component is electrically connected to the power supply component, and the signal generating device is electrically connected to the power supply component.

7. The detection device for high temperature and high humidity environment of display screen aging according to claim 3 is characterized in that: The detection furnace is provided with an opening, and the air inlet pipe, the air outlet pipe and the long cable are all connected to the converter through the opening.

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