CN221428778U - Power supply device and display panel testing system - Google Patents
Power supply device and display panel testing system Download PDFInfo
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- CN221428778U CN221428778U CN202323072716.6U CN202323072716U CN221428778U CN 221428778 U CN221428778 U CN 221428778U CN 202323072716 U CN202323072716 U CN 202323072716U CN 221428778 U CN221428778 U CN 221428778U
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Abstract
The utility model relates to a power supply device and a testing system of a display panel, wherein the power supply device is applied to the testing system of the display panel, and the device comprises: the communication module is connected with the control component of the test system and is used for receiving and transmitting the power supply configuration information transmitted by the control component of the test system; the control module is connected with the communication module and is used for receiving the power supply configuration information and generating a plurality of voltage regulation signals; the power conversion module is connected to the control module and comprises a plurality of power conversion units, and each power conversion unit is used for outputting target voltage to a corresponding display panel according to a corresponding voltage regulation signal. According to the embodiment of the utility model, different target voltages can be generated in different channels according to the requirements, so that the test requirements of various display panels can be met, and the test efficiency is improved.
Description
Technical Field
The present utility model relates to the field of testing technologies, and in particular, to a power supply device and a testing system for a display panel.
Background
At present, the types of display screens are more and more, and the requirements for a test platform are more and more. Since the LCD (Liquid CRYSTAL DISPLAY) and the OLED (Organic Light-Emitting Diode) display are examples, the power supplies of the LCD display and the OLED display are different, the test platform needs to switch the power board frequently, which increases the test complexity and may cause the display to be damaged if the test is forgotten.
Disclosure of utility model
According to an aspect of the present utility model, there is provided a power supply apparatus applied to a test system of a display panel, the apparatus comprising:
The communication module is connected with the control component of the test system and is used for receiving and transmitting the power supply configuration information transmitted by the control component of the test system;
The control module is connected with the communication module and is used for receiving the power supply configuration information and generating a plurality of voltage regulation signals;
The power conversion module is connected to the control module and comprises a plurality of power conversion units, and each power conversion unit is used for outputting target voltage to a corresponding display panel according to a corresponding voltage regulation signal.
In one possible embodiment, the apparatus further comprises:
The input end of the switching unit is connected with the output end of at least one power conversion unit, the control end of the switching unit is connected with the control module, and the output end of the switching unit is used for outputting the target voltage.
In one possible embodiment, the apparatus further comprises:
The LED backlight control chip is connected with the control module and used for generating a positive power supply voltage signal and a negative power supply voltage signal according to the received voltage regulation signal;
The switch unit is also used for: outputting the target voltage, or outputting the positive power supply voltage signal and the negative power supply voltage signal.
In one possible embodiment, the switching unit includes any one or a combination of any plurality of relays, multiplexers, reed switches, thyristors, switching diodes and/or switching transistors, electronic bi-directional switches, optocouplers, transistors, etc.
In one possible implementation manner, the communication module includes a communication chip and a communication control chip, the communication chip is used for receiving power supply configuration information transmitted by a control component of the test system, and the communication control chip is used for transmitting the power supply configuration information to the control module.
In one possible implementation manner, the communication chip includes any one of a UART communication chip, an IIC communication chip, an SPI communication chip, a CAN communication chip, and a USB communication chip, and the communication control chip includes any one of an FPGA chip, a CPLD chip, and a DSP chip.
In one possible implementation manner, the control module includes a control unit and a digital-to-analog conversion unit, where the control unit is configured to generate a digital voltage adjustment signal according to the power supply configuration information, and the digital-to-analog conversion unit is configured to convert the digital voltage adjustment signal into an analog voltage adjustment signal.
In one possible embodiment, the display panel includes any one or more of a liquid crystal display panel, an organic light emitting diode display panel, a quantum dot light emitting diode display panel, a mini light emitting diode display panel, and a micro light emitting diode display panel.
According to an aspect of the present utility model, there is provided a test system of a display panel, the test system including:
the power supply device is used for supplying power to the power supply device;
A control assembly; and
The testing platform is used for placing at least one display panel to be tested.
According to the embodiment of the utility model, the power supply configuration information transmitted by the control component of the test system is received and transmitted to generate a plurality of voltage regulation signals, and each power supply conversion unit of the power supply conversion module is utilized to output target voltages to corresponding display panels according to the corresponding voltage regulation signals, so that different target voltages can be generated in different channels according to requirements, the test requirements of various display panels are met, and the test efficiency is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed. Other features and aspects of the present utility model will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
Fig. 1 shows a schematic diagram of a power supply device according to an embodiment of the utility model.
Fig. 2 shows a schematic diagram of a power supply device according to an embodiment of the utility model.
Detailed Description
Various exemplary embodiments, features and aspects of the utility model will be described in detail below with reference to the drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, may mean including any one or more elements selected from the group consisting of A, B and C.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better illustration of the utility model. It will be understood by those skilled in the art that the present utility model may be practiced without some of these specific details. In some instances, well known methods, procedures, components, and circuits have not been described in detail so as not to obscure the present utility model.
Referring to fig. 1, fig. 1 is a schematic diagram of a power supply device according to an embodiment of the utility model.
As shown in fig. 1, the power supply device 2 is applied to a test system of a display panel, and the device includes:
The communication module 10 is connected to the control component 1 of the test system and is used for receiving and transmitting the power supply configuration information transmitted by the control component 1 of the test system;
The control module 20 is connected to the communication module 10, and is configured to receive the power configuration information and generate a plurality of voltage adjustment signals;
The power conversion module 30 is connected to the control module 20, and the power conversion module 30 includes a plurality of power conversion units 310, and each power conversion unit 310 is configured to output a target voltage to a corresponding display panel according to a corresponding voltage adjustment signal.
According to the embodiment of the utility model, the power supply configuration information transmitted by the control component 1 of the test system is received and transmitted to generate a plurality of voltage regulation signals, and each power supply conversion unit 310 of the power supply conversion module 30 is utilized to output target voltages to corresponding display panels according to the corresponding voltage regulation signals, so that different target voltages can be generated in different channels according to requirements, the test requirements of various display panels are met, and the test efficiency is improved.
The specific types of the display panel are not limited, the display panel may include any one or more of a liquid crystal display panel, an organic light emitting diode display panel, a quantum dot light emitting diode display panel, a mini light emitting diode display panel and a micro light emitting diode display panel, and the power supply device 2 of the embodiment of the utility model may independently supply power to a plurality of different types of display panels, for example, when the LCD display panel and the OLED display panel need to be tested, the LCD display panel and the OLED display panel may be connected to different output channels of the power supply device 2, the control component 1 of the test system may adaptively configure power supply configuration information according to the LCD display panel and the OLED display panel, and the power supply device 2 of the embodiment of the utility model may respectively generate target voltages at the power supply conversion units 310 of the corresponding channels according to the power supply configuration information of the LCD display panel and the OLED display panel, so as to respectively supply power to the LCD display panel and the OLED display panel, and may realize real-time adjustment of the voltages of the respective channels.
In the embodiment of the present utility model, the number of the power conversion units 310 in the power supply device 2, that is, the number of the output channels of the power supply device 2 (N in fig. 1 may be any positive integer), and a person skilled in the art may set, for example, according to actual situations and needs, generally, one display panel needs 5 to 7 different power supplies, and in the embodiment of the present utility model, at least 7 output channels (for example, CH1 to CHN) may be set, and if the occupied area is reduced, in the embodiment of the present utility model, 7 output channels (for example, CH1 to CH 7) may be set, then a test of one display panel is performed at a time, and after the test of the current display panel is completed, a test of the next display panel is performed again according to the attribute determination power supply configuration information of the next implementation panel. If the number of output channels corresponds to the number of display panels measured simultaneously, for example, 2 display panels are tested simultaneously, and the number of output channels is 10-14, so that the test of 2 display panels can be realized simultaneously.
The specific implementation manners of the communication module 10, the control module 20, the power conversion module 30 and the power conversion unit 310 are not limited in this embodiment of the present utility model, and those skilled in the art may select appropriate technical means according to actual situations and needs.
Referring to fig. 2, fig. 2 is a schematic diagram of a power supply device 2 according to an embodiment of the utility model.
In one possible embodiment, as shown in fig. 2, the apparatus further includes:
The input end of the switching unit 320 is connected to the output end of at least one power conversion unit 310, the control end of the switching unit 320 is connected to the control module 20, and the output end of the switching unit 320 is used for outputting the target voltage.
The specific implementation manner of the switching unit 320 is not limited, and a person skilled in the art may select an appropriate switch to implement the switching unit 320 according to actual situations and needs, and in one possible implementation manner, the switching unit 320 may include any one or any combination of a plurality of relays, multiplexers, reed switches, thyristors, switching diodes and/or switching triodes, electronic bi-directional switches, photocouplers, transistors, and the like.
In the embodiment of the present utility model, multiplexing of one or more power conversion units 310 can be achieved through the switch unit 320, the control module 20 can output a switch control signal for controlling the switch of the switch unit 320 in addition to the output voltage adjustment signal, and the switch unit 320 is controlled by the switch control signal, so as to control whether the power conversion unit 310 outputs or outputs a channel, for example, the power conversion unit a outputs 3.3V voltage, the power conversion unit B outputs 5V voltage, and the switch unit 320 can achieve that 3.3V voltage is output in the power channel CH1 and 5V voltage is output in the power channel CH2, and can also achieve that 5V voltage is output in the power channel CH1 and 3.3V voltage is output in the power channel CH2, without reconfiguring power configuration information to adjust the output voltage.
In one possible embodiment, as shown in fig. 2, the apparatus may further include:
An LED backlight control chip 330 connected to the control module 20 for generating a positive power voltage signal (i.e., LED+) and a negative power voltage signal (i.e., LED-), according to the received voltage adjustment signal;
The switching unit 320 is further configured to: outputting the target voltage, or outputting the positive power supply voltage signal and the negative power supply voltage signal.
For example, a backlight is needed during testing of the LCD display screen, and since the power supply of the backlight needs to be a current type power supply, the embodiment of the utility model sets the LED backlight control chip 330 in the power supply device 2, which can support PWM to adjust brightness in real time, the LED backlight control chip 330 can convert the voltage adjustment signal output by the control module 20 into a positive power supply voltage signal (i.e., led+) and a negative power supply voltage signal (i.e., LED "), and under the control of the switch control signal output by the control module 20, the switch unit 320 can realize outputting the target voltage output by the power supply conversion unit 310 in a specific power supply channel, or outputting the positive power supply voltage signal and the negative power supply voltage signal generated by the LED backlight control chip 330.
For example, the control module 20 may generate a switch control signal to control the switch unit 320 to perform channel switching according to needs, so as to implement on-off control of the internal switch.
In one possible implementation, as shown in fig. 2, the communication module 10 may include a communication chip 110 and a communication control chip 120, where the communication chip 110 is configured to receive power configuration information transmitted from the control component 1 of the test system, and the communication control chip 120 is configured to transmit the power configuration information to the control module 20.
In one possible implementation manner, the communication chip 110 includes any one of a UART communication chip, an IIC communication chip, an SPI communication chip, a CAN communication chip, and a USB communication chip, and the communication control chip 120 includes any one of an FPGA chip, a CPLD chip, and a DSP chip.
Of course, the communication chip 110 and the communication control chip 120 are not limited to the above exemplary description, and in other embodiments, those skilled in the art may select other suitable chip implementations.
In one possible implementation, as shown in fig. 2, the control module 20 may include a control unit 210 and a digital-to-analog conversion unit 220, where the control unit 210 is configured to generate a digital voltage adjustment signal according to the power supply configuration information, and the digital-to-analog conversion unit 220 is configured to convert the digital voltage adjustment signal into an analog voltage adjustment signal.
The specific implementation manner of the control unit 210 for generating the digital voltage adjustment signal according to the power configuration information is not limited in the embodiment of the present utility model, and those skilled in the art may refer to the related art implementation.
The specific implementation of the control unit 210 and the digital-to-analog conversion unit 220 is not limited in this embodiment of the present utility model, and the control unit 210 may include a processing component, including but not limited to a separate processor, or a discrete component, or a combination of a processor and a discrete component. The processor may include a controller in an electronic device having the functionality to execute instructions, and may be implemented in any suitable manner, for example, by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements. Within the processor, the executable instructions may be executed by hardware circuits such as logic gates, switches, application SPECIFIC INTEGRATED Circuits (ASIC), programmable logic controllers, and embedded microcontrollers.
Illustratively, the digital-to-analog conversion unit 220 may include a digital-to-analog converter DAC.
For example, the power conversion unit 310 may be a dc-dc conversion chip, and each of the dc-dc conversion chips may receive a corresponding one of the digital voltage adjustment signals from the digital-to-analog conversion unit 220, thereby generating a voltage signal having a specified voltage value according to the voltage adjustment signal. In an embodiment, the voltage adjustment signal may be Swire signals, so that the dc-dc conversion chip generates a voltage signal with a specified voltage value, a specified power-up time sequence and a specified power-down time sequence under the control of the Swire signals; wherein the voltage value may be between 0.8V and 9.0V.
According to an aspect of the present utility model, there is provided a test system of a display panel, as shown in fig. 1, the test system including:
The power supply device 2;
A control assembly 1; and
And the test platform 3 is used for placing at least one display panel to be tested.
According to the testing system of the embodiment of the utility model, the power supply configuration information transmitted by the control component 1 of the testing system is received and transmitted to generate a plurality of voltage regulation signals, and each power supply conversion unit 310 of the power supply conversion module 30 is utilized to output target voltages to corresponding display panels according to the corresponding voltage regulation signals, so that different target voltages can be generated in different channels according to requirements, thereby adapting to the testing requirements of various display panels and improving the testing efficiency.
For example, when testing the LCD display panel, the LCD display panel is disposed on the test platform 3, and the control module 1 is used to transmit the power configuration information corresponding to the LCD display panel to the communication module 10, so that under the control of the communication module 10 and the control module 20 of the power supply device 2, a plurality of dc-dc conversion chips (the power conversion unit 310) output a plurality of voltage signals with specified voltage values, specified power-up time sequences and specified power-down time sequences to the test platform 3, so as to supply power to the LCD display panel. Meanwhile, under the control of the control module 20 of the power supply device 2, the switch unit 320 of the power supply device 2 selectively outputs the positive power supply voltage signal (i.e., led+) and the negative power supply voltage signal (i.e., LED-) to the test platform 3, thereby supplying power to the LED backlight module of the LCD display panel.
For example, when testing the OLED display panel, the OLED display panel is disposed on the testing platform 3, and a power configuration information corresponding to the OLED display panel is transmitted to the communication module 10 of the power supply device 2 through the control assembly 1. In this way, under the control of the communication module 10 and the control module 20 of the power supply device 2, the dc-dc conversion chips (the power conversion unit 310) output voltage signals with specified voltage values, specified power-up time sequences and specified power-down time sequences to the test platform 3, so as to supply power to the OLED display panel. Meanwhile, under the control of the control module 20, the switching unit 320 selectively outputs the voltage signals outputted from the two dc-dc conversion chips (the power conversion unit 310) as ELVDD and ELVSS to the test platform 3, thereby providing ELVDD and ELVSS to an OLED panel of the OLED display panel.
The embodiment of the utility model can also realize the test of the electronic device comprising the display panel, in one example, the electronic device can be a Terminal, which is also called User Equipment (UE), mobile Station (MS), mobile Terminal (MT), and the like, and is a device for providing voice and/or data connectivity to a User, for example, a handheld device with a wireless connection function, an in-vehicle device, and the like. Currently, some examples of terminals are: a Mobile Phone, a tablet, a notebook, a palm, a Mobile internet device (Mobile Internetdevice, MID), a wearable device, a Virtual Reality (VR) device, an augmented Reality (Augmentedreality, AR) device, a wireless terminal in industrial control (Industrial Control), a wireless terminal in unmanned (SELFDRIVING), a wireless terminal in teleoperation (Remote medical Surgery), a wireless terminal in Smart grid (SMART GRID), a wireless terminal in transportation security (Transportation Safety), a wireless terminal in Smart city (SMART CITY), a wireless terminal in Smart Home, a wireless terminal in the internet of vehicles, and the like.
According to the embodiment of the utility model, a plurality of power supply channels can be provided through the power supply device 2 to output a plurality of power supplies, high-efficiency tests are carried out on various display panels, the voltage value and the current value of each power supply (namely, on-line real-time voltage and current adjustment is supported) can be adjusted through the control component 1, the power-on time sequence and the power-off time sequence of each power supply can be flexibly configured, and the test mode can be switched according to the current test target (such as an LCD display panel or an OLED display panel).
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. A power supply device, wherein the power supply device is applied to a test system of a display panel, the device comprising:
The communication module is connected with the control component of the test system and is used for receiving and transmitting the power supply configuration information transmitted by the control component of the test system;
The control module is connected with the communication module and is used for receiving the power supply configuration information and generating a plurality of voltage regulation signals;
The power conversion module is connected to the control module and comprises a plurality of power conversion units, and each power conversion unit is used for outputting target voltage to a corresponding display panel according to a corresponding voltage regulation signal.
2. The power supply device of claim 1, wherein the device further comprises:
The input end of the switching unit is connected with the output end of at least one power conversion unit, the control end of the switching unit is connected with the control module, and the output end of the switching unit is used for outputting the target voltage.
3. The power supply device according to claim 2, characterized in that the device further comprises:
The LED backlight control chip is connected with the control module and used for generating a positive power supply voltage signal and a negative power supply voltage signal according to the received voltage regulation signal;
The switch unit is also used for: outputting the target voltage, or outputting the positive power supply voltage signal and the negative power supply voltage signal.
4. The power supply device according to claim 2, wherein the switching unit comprises any one or a combination of any plurality of relays, multiplexers, dry reed switches, thyristors, switching diodes and/or switching transistors, electronic bi-directional switches, optocouplers, transistors.
5. The power supply device according to claim 1, wherein the communication module comprises a communication chip and a communication control chip, the communication chip is used for receiving power configuration information transmitted from a control component of the test system, and the communication control chip is used for transmitting the power configuration information to the control module.
6. The power supply device according to claim 5, wherein the communication chip includes any one of a UART communication chip, an IIC communication chip, an SPI communication chip, a CAN communication chip, and a USB communication chip, and the communication control chip includes any one of an FPGA chip, a CPLD chip, and a DSP chip.
7. The power supply device according to claim 1, wherein the control module comprises a control unit and a digital-to-analog conversion unit, the control unit is configured to generate a digital voltage adjustment signal according to the power supply configuration information, and the digital-to-analog conversion unit is configured to convert the digital voltage adjustment signal into an analog voltage adjustment signal.
8. The power supply of claim 1, wherein the display panel comprises any one or more of a liquid crystal display panel, an organic light emitting diode display panel, a quantum dot light emitting diode display panel, a mini light emitting diode display panel, and a micro light emitting diode display panel.
9. A system for testing a display panel, the system comprising:
the power supply device according to any one of claims 1 to 8;
A control assembly; and
The testing platform is used for placing at least one display panel to be tested.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202323072716.6U CN221428778U (en) | 2023-11-14 | 2023-11-14 | Power supply device and display panel testing system |
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| CN202323072716.6U CN221428778U (en) | 2023-11-14 | 2023-11-14 | Power supply device and display panel testing system |
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| CN221428778U true CN221428778U (en) | 2024-07-26 |
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