TWM616140U - Multiple output power supply unit - Google Patents

Abstract

A multi-output power supply device includes a signal transmission module, a signal generator, a power amplifier, and a power supply for providing its working power; the signal transmission module transmits complex waveform setting instructions, and the signal generator is electrically connected The signal transmission module receives and generates timing synchronized complex power waveform signals according to the complex waveform setting command. The complex signal output terminals of the signal generator respectively and synchronously output the complex power waveform signals. The power amplifier has a complex signal input terminal. , Which are respectively electrically connected to the complex signal output terminal of the signal generator, the power amplifier amplifies the power of the complex power waveform signal to form a complex output power source, and the multiple power output terminals of the power amplifier respectively and synchronously output the complex output power source.

Description

Multi-output power supply device

This new model relates to a multi-output power supply device, in particular to a multi-output power supply device that can output timing synchronized power.

The application fields of power supplies are diverse. For example, in the optical alignment process of thin-film transistor liquid crystal display panels (TFT-LCD), multiple power supplies can respectively provide power to perform related process work.

In the photo-alignment process of TFT-LCD, please refer to FIG. 5. The visible area of the display panel 50 includes a plurality of pixels. The transistor 51 in each pixel is electrically connected to the scan line Gate, the data line Data and the common connection on the display panel 50. Click on Vcom. The display panel 50 can be connected to a base 60, and the base 60 is provided with a first contact 61, a second contact 62 and a third contact 63. The scan line Gate on the display panel 50 is connected in parallel and electrically connected to the first contact 61 through the electronic circuit layout on the base 60; in the same way, the common contact Vc0m on the display panel 50 is electrically connected to the first contact 61. The second contact 62 is electrically connected to the third contact 63 by the data line Data on the display panel 50.

Since each power supply 70 has a power output terminal, in order to provide different power waveforms to the first contact 61, the second contact 62 and the third contact 63, three power supplies 70 are required. The power output ends of the three power supplies 70 are respectively electrically connected to the first contact 61, the second contact 62 and the third contact 63 to form a one-to-one connection structure (ie: a power supply Corresponding to connect a contact). After each power supply 70 is set to output the power waveform timing, it can output the corresponding power waveform accordingly. Therefore, the three power supplies 70 provide different power waveforms to the first contact 61 and the second contact. The contact 62 and the third contact 63 meet the requirements of the optical alignment process of TFT-LCD.

Ideally, the output power waveform timings of the three power supplies 70 should be synchronized, for example, the waveforms should be changed synchronously at a certain time, but in fact, because the three power supplies 70 operate independently, their output power timings The lack of synchronization with each other causes the three power supplies 70 to change their waveforms at different time points in succession. As a result, the power sequence received by the display panel 50 through the first contact 61, the second contact 62, and the third contact 63 is abnormal, resulting in an abnormality in the TFT-LCD optical alignment process. The upper liquid crystal molecules cannot be deflected and positioned, and the abnormal voltage derived from the unsynchronized power sequence may damage the display panel 50.

In view of this, the main purpose of the present invention is to provide a multi-output power supply device in order to overcome the shortcoming that the output power timings of multiple conventional power supplies described in the prior art are not synchronized.

The new multi-output power supply device includes: a signal transmission module, which transmits complex waveform setting instructions; a signal generator, which is electrically connected to the signal transmission module to receive the complex waveform setting instructions, and generates timing according to the complex waveform setting instructions Synchronous complex power supply waveform signal, the complex signal output terminal of the signal generator separately and synchronously outputs the complex power supply waveform signal; a power amplifier has a complex signal input terminal, which is respectively electrically connected to the complex signal output terminal of the signal generator , The power amplifier amplifies the power of the complex power supply waveform signal to form a complex output power, the multiple power output ends of the power amplifier respectively and synchronously output the complex output power; and a power supply electrically connected to the signal transmission module and the The signal generator and the power amplifier.

According to the multi-output power supply device of the present invention, the signal generator generates and synchronously outputs the complex power waveform signal, and at least two waveform setting commands in the complex waveform setting commands based on which can be different from each other, that is to say, this The new complex output generated by the power amplifier The output power is derived from the same signal generator, and the complex power supply waveform signal synchronized in timing is generated by the signal generator. Correspondingly, the timing of the complex output power is also synchronized.

When the present invention is applied to the TFT-LCD optical alignment process, it is different from the multiple independent operation power supplies described in the previous technology. The three power output terminals of the power amplifier of the present invention can respectively provide timing synchronization and different waveform output. The power is supplied to the display panel. Because of its timing synchronization, the three output power supplies provided by the three power output terminals of the power amplifier can synchronously change the waveform at a certain time (according to the parameters set by the waveform setting command), so the display panel’s The liquid crystal molecules can effectively react, so that the liquid crystal molecules are deflected and positioned with each of the output power sources, improving the process yield, and can prevent the liquid crystal panel from being damaged by the abnormal voltage caused by the unsynchronized timing.

10: Multi-output power supply device

11: Signal transmission module

12: Signal generator

13: Power amplifier

14: power supply

20: Power connector

21: Communication connector

22: output connector

30: Target device

31: Transistor

40: Pedestal

41: The first contact

42: second contact

43: third contact

50: display panel

51: Transistor

61: Pedestal

61: First contact

62: second contact

63: third contact

70: power supply

VAC: AC power

VD: working power supply

m1: The first waveform setting command

m2: Second waveform setting command

mN: Nth waveform setting command

g1: the first power waveform signal

g2: second power supply waveform signal

gN: Nth power waveform signal

CH1: First output power

CH2: second output power

CH3: Third output power supply

CHN: Nth output power

CHx: any output power

Gate: Scan line

Data: data line

Vcom: common contact

t1: the first time

t2: second time

t3: third time

V1: DC level parameter

V2: Amplitude parameter

ta, tb: point in time

Figure 1: A block diagram of an embodiment of the novel multi-output power supply device.

Figure 2: Schematic diagram of the power waveform signal output by the signal generator in the present invention.

Figure 3: Schematic diagram of the output power output by the power amplifier in the present invention.

Figure 4: Schematic diagram of the state of use of the present invention.

Figure 5: A schematic diagram of the application of multiple conventional power supplies in the TFT-LCD optical alignment process.

Please refer to FIG. 1, an embodiment of the multi-output power supply device 10 of the present invention includes a signal transmission module 11, a signal generator 12, a power amplifier 13 and a power supply 14. The signal transmission module 11, the signal generator 12, the power amplifier 13, and the power supply 14 are basically composed of a printed circuit board (PCB), an integrated circuit chip (IC), and various electronic circuit components, respectively Modular circuit, and can be integrated and arranged in a housing. The surface of the casing can be provided with a power connector 20, a communication connector 21, and an output connector 22. The power connector 20 can be externally connected to a power socket or a factory industrial electrical terminal block through a power cord to receive a AC power supply VAC, the voltage of the AC power supply VAC can be It is 200~240V; the communication connector 21 is used to connect an external device to the outside, and the output connector 22 is used to connect a target device to the outside.

In the embodiment of the present invention, the output end of the power supply 14 is electrically connected to the signal transmission module 11, the signal generator 12 and the power amplifier 13. The power supply 14 can receive the AC power VAC through the power connector 20, and convert the AC power VAC into a plurality of working power sources VD, and the plurality of working power sources VD are respectively supplied to the signal transmission module 11 and the signal generator 12 and the power amplifier 13 to provide its work needs.

The signal transmission module 11 is electrically connected to the communication connector 21. The external device connected to the communication connector 21 can be, for example, an industrial computer, a chip module, or a server, but it is not limited to this. Therefore, the signal transmission module 11 can form a signal connection with the external device through the communication connector 21. In the embodiment of the present invention, the communication connector 21 can be a serial communication connector, such as an RS-232 connector. . The signal transmission module 11 can receive and transmit a complex waveform setting command from the external device. The complex waveform setting command can be defined as a first waveform setting command m1, a second waveform setting command m2, ... and a first waveform setting command m1, a second waveform setting command m2, ... The N waveform setting command mN, N is a positive integer greater than or equal to 2. In the embodiment of the present invention, N is 24. Among them, the external device can be a computer, which can execute Visual Basic software programs (but not limited to this), and can provide an operating interface for users to watch through a display unit (such as a liquid crystal display), and through an input unit (such as Keyboard, mouse or touch panel) for the user to set the parameters of each waveform setting command. For example, the parameters of each waveform setting command may include time parameters, frequency parameters, DC level parameters, amplitude parameters, or mode parameters. The mode parameters may include square wave mode, sine wave mode, or other waveform modes, and the The parameters set by at least two waveform setting commands in the complex waveform setting commands may be different from each other.

The signal generator 12 is electrically connected to the signal transmission module 11 to receive the complex waveform setting command through the signal transmission module 11. The signal generator 12 has a processing core chip, and the signal transmission module 11 provides the signal generation The handshaking function between the core chip of the processor 12 and the external device. The signal generator 12 can generate complex power waveform signals according to the complex waveform setting commands through program setting, and the timing of the complex power waveform signals is synchronized, wherein the complex power waveform signals can be respectively defined as a first power waveform signal g1, a second power waveform signal g2, ... and an Nth power waveform signal gN, the first power waveform signal g1 corresponds to the first waveform setting command m1, and so on. Please refer to the waveform diagram of any power waveform signal shown in Figure 2. The time parameters of the corresponding waveform setting command include a first time t1, a second time t2, and a third time t3. Each time parameter is set The corresponding frequency parameter, DC level parameter, amplitude parameter and/or mode parameter, for example, the frequency parameter corresponding to the first time t1 may be 0 Hz, and the DC level parameter corresponding to the first time t1 may be V1; The frequency parameter corresponding to the third time t3 can be a frequency value (Hz), the DC level parameter corresponding to the third time t3 can be V1, and the amplitude parameter corresponding to the third time t3 can be V2, which corresponds to the third time t3. The mode parameter of the time t3 can be a square wave mode; and so on, through different parameter settings, an arbitrary waveform such as the second time t2 can be generated.

It should be noted that when the signal transmission module 11 adopts a serial transmission method, the signal transmission module 11 sequentially receives the first to the Nth waveform setting commands m1~mN, and transmits them to the signal generation Accordingly, the signal generator 12 can define and generate corresponding power waveform signals according to the receiving order of the waveform setting commands. The signal generator 12 has a complex signal output terminal, and the signal generator 12 synchronously outputs the complex power waveform signal through the complex signal output terminal, that is, the number of the complex signal output terminal of the signal generator 12 includes N, Therefore, the first to the Nth power waveform signals g1~gN are respectively and synchronously output through the N signal output terminals.

The power amplifier 13 has a complex signal input terminal (ie: N signal input terminals), and the complex signal input terminal of the power amplifier 13 is electrically connected to the complex signal output terminal of the signal generator 12 to synchronously receive the first signal input terminal. To the Nth power supply waveform signal g1~gN, because the voltage/current of the first to the Nth power supply waveform signal g1~gN is still low and insufficient to drive the target device, the complex power in the power amplifier 13 The amplifying circuit respectively synchronously amplifies the power of the complex power supply waveform signal to form Multiple output power sources, where the multiple output power sources can be respectively defined as a first output power source CH1, a second output power source CH2,... and an Nth output power source CHN, and the first output power source CN1 corresponds to the first power source Waveform signal g1, and so on. Please refer to the waveform diagram of the first output power source CH1 and any other output power source CHx shown in FIG. The power amplifier 13 has a plurality of power output terminals (ie: N power output terminals), and the plurality of power output terminals of the power amplifier 13 respectively and synchronously output the plural output power, that is, synchronously output the first to the Nth output power CH1~CHN.

Therefore, the complex output power generated by the power amplifier 13 in the present invention is derived from the same signal generator 12, and the timing of the complex power waveform signal generated by the signal generator 12 is synchronous, based on the timing For the synchronization characteristics, taking FIG. 3 as an example, the first output power source CH1 and any output power source CHx can accurately and synchronously switch their voltage waveforms at the time points ta and tb, which are consistent with the parameters set in the corresponding waveform setting commands.

In the embodiment of the present invention, the output connector 22 may be a European terminal block and includes a plurality of connection contacts (ie: N connection contacts), and the plurality of power output ends of the power amplifier 13 are respectively electrically connected to the output connector The plurality of connection points of 22 enable the power amplifier 13 to be electrically connected to the target device through the output connector 22. Compared with the power waveform signals generated by the signal generator 12, the voltage or current of each output power source output by the power amplifier 13 has been increased and is sufficient to drive the target device. For example, the voltage range of each output power supply can be -20~+50V, and the current can be 1A, but it is not limited to this. In addition, the power amplifier 13 is programmable and has a current limiting function, that is, has an over current protection function (OCP), which can avoid damage caused by excessive current output to the target device.

In summary, at least two waveform setting commands in the complex waveform setting commands of the present invention are different from each other. That is to say, the complex waveform setting commands can be partially different according to the user’s settings. Correspondingly, the present invention outputs The first to the Nth output power supply CH1~CHN presents differently The wave shape is similar, especially the first to the Nth output power sources CH1 to CHN are time-synchronized, which can provide the target device with a time-accurate and synchronized power source.

For example, please refer to FIG. 4, the target device 30 is a thin film transistor liquid crystal display panel (TFT-LCD) as an example. Its visible area includes a plurality of pixels, and the transistor 31 in each pixel is electrically connected to the panel The scan line Gate, data line Data and common contact Vcom. The target device 30 can be connected to a base 40 that includes an electronic circuit layout (layout), a first contact 41, a second contact 42 and a third contact 43, through the base 40 In the electronic circuit layout, the scan line Gate can be connected in parallel to the first contact 41, the common contact Vcom can be connected in parallel to the second contact 42, and the data line Data can be connected in parallel. Connected to the third contact 43. The multi-output power supply device 10 of the present invention can be electrically connected to the first contact 41, the second contact 42 and the third contact 43 through the three connection contacts of the output connector 22, and then to the target The device 30 forms an electrical connection, and the present invention can output the first output power source CH1, the second output power source CH2 and the third output power source CH3 synchronized in time sequence to the target device 30 to perform related processing operations. Taking the photo-alignment process applied to TFT-LCD as an example, because the present invention provides time-synchronized output power to the target device 30, so that the liquid crystal molecules of the target device 30 can respond effectively, and the liquid crystal molecules follow the output power The deflection reaches the positioning, and can avoid damage to the liquid crystal panel due to abnormal voltage caused by unsynchronized timing.

In addition to the aforementioned applications, the present invention can also be applied to other industries, such as LCD (liquid crystal display)/LED (light emitting diode) lighting systems that can be used in the optoelectronics industry to control lighting through the sequential synchronous output power generated by the present invention; The new type can also be applied to control systems in the electronics industry to control electronic control components (such as motors, solenoid valves, etc.) through the timing synchronous output power generated by the new type.

10: Multi-output power supply device

11: Signal transmission module

12: Signal generator

13: Power amplifier

14: power supply

20: Power connector

21: Communication connector

22: output connector

VAC: AC power

VD: working power supply

m1: The first waveform setting command

m2: Second waveform setting command

mN: Nth waveform setting command

g1: the first power waveform signal

g2: second power supply waveform signal

gN: Nth power waveform signal

CH1: First output power

CH2: second output power

CHN: Nth output power

Claims (8)

A multi-output power supply device includes: a signal transmission module, which transmits a complex waveform setting command; a signal generator, which is electrically connected to the signal transmission module to receive the complex waveform setting command, and generates a timing sequence according to the complex waveform setting command Synchronous complex power supply waveform signal, the complex signal output terminal of the signal generator separately and synchronously outputs the complex power supply waveform signal; a power amplifier has a complex signal input terminal, which is respectively electrically connected to the complex signal output terminal of the signal generator , The power amplifier amplifies the power of the complex power supply waveform signal to form a complex output power, the multiple power output ends of the power amplifier respectively and synchronously output the complex output power; and a power supply electrically connected to the signal transmission module and the The signal generator and the power amplifier. The multi-output power supply device according to claim 1, wherein each of the waveform setting commands includes a time parameter, a frequency parameter, a DC level parameter, an amplitude parameter, or a mode parameter. The multi-output power supply device according to claim 2, wherein the mode parameter includes a square wave mode. The multi-output power supply device according to claim 2 or 3, wherein the mode parameter includes a sine wave mode. The multi-output power supply device according to any one of claims 1 to 3, wherein at least two waveform setting commands in the plurality of waveform setting commands are different from each other. The multi-output power supply device according to claim 4, wherein at least two waveform setting commands in the complex waveform setting commands are different from each other. The multi-output power supply device according to claim 1, wherein the signal transmission module is electrically connected to a serial communication connector. The multi-output power supply device according to claim 1, wherein the plurality of power output ends of the power amplifier are electrically connected to a European terminal block.

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