KR100749281B1 - Power supply apparatus of lithographic plate display in a surface prosecution - Google Patents

Abstract

The present invention has a built-in rechargeable battery in the laser coordinate pointing device installed on the moving body to point to the defect position to ensure mobility, the inconvenience of having a separate charging device by mounting a charging device in the bridge for transferring the moving body The present invention relates to a power supply of a flat panel display surface inspector that eliminates inconvenience of charging and charging and suppresses particle generation.

The present invention is a power supply of a surface inspection device for inspecting the surface of the flat panel display having a stage on which the flat panel display as an inspection object is placed, a bridge that moves on the stage, and the like, and supplies driving power through an internal battery. A moving object providing a light source for recognizing the coordinates of a defect position of a flat panel display mounted on the stage, and providing a moving path of the moving object and fixedly mounted to a bridge moving in the vertical direction of the stage to supply charging power to the moving object. And charging control means.

Flat Panel Display Surface Inspector, Moving Object, Laser Irradiator, Particle, Power Supply

Description

POWER SUPPLY APPARATUS OF LITHOGRAPHIC PLATE DISPLAY IN A SURFACE PROSECUTION}

1 is a perspective view of a flat panel display surface inspector to which the present invention is applied.

Figure 2 is a block diagram showing the configuration of the power supply of the flat panel display surface inspector according to an embodiment of the present invention.

3 is a flow chart showing a power supply process of the flat panel display surface inspector according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100... Charge control means

110... Battery voltage detector

120... Central Processing Unit

130... Charge controller

200... Moving object

210... Laser irradiator

220... battery

230... Power supply and charge controller

The present invention relates to a power supply for a flat panel display surface inspector, and more particularly, a rechargeable battery is installed in a laser coordinate pointing device installed at a moving object and pointing at a defect position, thereby ensuring mobility and transferring the moving object. The present invention relates to a power supply of a flat panel display surface inspector for relieving inconvenience and inconvenience of charging by mounting a charging device on a bridge.

In general, a flat panel display surface inspector that inspects a flat glass panel used in a flat panel display device such as an LCD or a PDP is a macro inspection device that detects defects depending on the vision of the inspector. Micro-inspection equipment that enlarges and inspects each part, and Mac-Mic inspection equipment that performs precise inspection simultaneously using a microscope after the primary inspection by the naked eye are used.

Among them, macro inspection equipment is roughly classified into a method of inspecting defects using a reflection mirror, a method of inspecting defects using a light emitting diode (LED), and a method of inspecting defects using a laser.

The method of inspecting defects by using a reflecting mirror has a disadvantage in that absolute accuracy is insufficient for more than 2 m in width and width, setup is very difficult, variation in spasms is severe, and accuracy decreases sharply as it moves away from the light source (laser). There is this.

The method of checking for defects using a light emitting diode is limited by the pointing resolution of the LED size, and the accuracy is low because the defect cannot be directly pointed out, and the circuit is complicated, the current consumption is high, and the control method by using thousands of LEDs. This has the disadvantage of complexity and the disadvantage of taking a long pointing time.

In order to improve the shortcomings of the defect inspection method using a reflection mirror and the defect inspection method using a light emitting diode, a conventionally proposed method is a method of inspecting a defect by directly moving a laser.

Since this method transfers the laser coordinate pointing device using a precision motor, problems such as resolution and repeatability that can be solved in the method of inspecting defects using a reflection mirror and a light emitting diode can be solved.

However, since the laser driving power is separately supplied by using a cable, a particle is generated due to the flux required for the laser transfer.

Accordingly, the present invention has been proposed to solve various problems occurring in the conventional flat panel display surface inspector as described above.

The present invention provides a power supply for a flat panel display surface inspector to ensure mobility by embedding a rechargeable battery in a laser coordinate pointing device installed at a moving body and pointing at a defect position.

Another object of the present invention is to provide a power supply of the flat panel display surface inspector for eliminating the inconvenience and inconvenience of charging by mounting a charging device in the device (bridge) for transferring the moving object. There is.

According to the present invention for achieving the above object "power supply device for a flat panel display surface inspector",

A moving object supplied with driving power through an internal battery and providing a light source for recognizing a coordinate of a defect position of a flat panel display mounted on a stage;

It is provided with a charge control means for providing a moving path of the movable body and fixedly mounted to the bridge moving in the vertical direction of the stage, the charging power to the movable body.

The moving body includes a laser irradiator for providing a light source to facilitate visual identification of the defect location;

A built-in battery that can be charged to supply driving power to the laser irradiator;

A power supply for supplying driving power to the laser irradiator with the power discharged from the internal battery, charging the internal battery with the charging power supplied from the charging control means, and providing temperature detection data to the charging control means A supply and charge controller;

And a power supply and a data connection terminal connected to the charging control unit to receive charging power, to transmit temperature detection data, and to provide a path for detecting a battery discharge voltage.

The moving body further includes a temperature detector that detects a temperature of the internal battery and provides the power supply and charge controller.

The charging control means includes: a connection terminal for providing a moving object and a power and data connection path;

A battery voltage detector configured to detect a voltage of a battery built into a moving object through the connection terminal;

Central processing for controlling the entire operation of the charging control means, determining whether the battery is mounted or detached according to the voltage level detected by the battery voltage detector, generating a status display control signal, and generating a control signal for charging the battery. An apparatus;

A charging controller for generating a pulse width modulated signal for charging according to a charging control signal generated by the central processing unit;

A DC / DC converter for outputting a predetermined DC voltage as a charging voltage in response to a charging control signal generated by the central processing unit;

A power controller for controlling and outputting a level of a charging voltage output from the DC / DC converter according to a pulse width modulation signal generated by the charging controller;

The charging voltage output from the power controller is supplied to the moving object through the connection terminal, and when the charging voltage is overvoltage, the charging voltage is automatically blocked from being supplied to the moving object, and the battery temperature data is received and provided to the central processing unit. A protection circuit;

A user input / output unit for inputting a function signal for the user to select a function or determine a connection;

Is connected to the central processing unit and has a communication interface for performing communication with other external devices.

The charging control means may further include an indicator that visually displays whether the battery is installed and the voltage of the battery in response to the display control signal generated by the central processing unit.

The power controller may include a drive transistor configured to generate a driving signal according to a pulse width modulation signal generated by the charge controller;

It includes a power control transistor for controlling the power of the charge voltage output from the DC / DC converter in conjunction with the drive transistor.

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Hereinafter, described in detail with reference to the accompanying drawings a preferred embodiment of the present invention. If it is determined that the detailed description of the known function or configuration related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a perspective view of a flat panel display surface inspector to which the present invention is applied.

Here, reference numeral 200 denotes a moving body supplied with driving power through a built-in battery and providing a light source for recognizing coordinates of a defect position of the flat panel display mounted on the stage 10, and reference numeral 100 denotes a moving body 200. It shows a charging control means that is fixed to the bridge 20 to provide a moving path of the movement in the vertical direction of the stage 10, and supplies the charging power to the moving body (200).

2 illustrates a configuration of a power supply of a flat panel display surface inspector according to a preferred embodiment of the present invention.

As shown therein, the movable body 200 includes a laser irradiator 210 that provides a light source to easily identify a defect location with a naked eye, and a rechargeable internal battery that supplies driving power to the laser irradiator 210. 220, the driving power is supplied to the laser irradiator 210 with the power discharged from the built-in battery 220, and the built-in battery 220 is charged with the charging power supplied from the charge control means 100. And a power supply and charge controller 230 for supplying temperature detection data to the charge control means 100 and a charge control device 100 connected with the charge control means 100 to receive charge power, transmit temperature detection data, and detect a battery discharge voltage. It is provided with a power and data connection terminal 240 for providing a, and a temperature detector 250 for detecting the temperature of the built-in battery 220 to provide to the power supply and charge controller 230.

The charging control means 100 detects the voltage of the battery 220 embedded in the mobile body 200 through the connection terminal 101, which provides a power and data connection path with the mobile body 200, and the connection terminal 101. While controlling the overall operation of the battery voltage detector 110 and the charging control means 100, it is determined whether the battery is mounted or detached according to the voltage level detected by the battery voltage detector 110 to determine the state display control signal A central processing unit 120 for generating a control signal for charging the battery, a charging controller 130 for generating a pulse width modulation signal for charging according to a charging control signal generated in the central processing unit 120, The DC / DC converter 140 outputs a predetermined DC voltage as the charging voltage in response to the charging control signal generated by the central processing unit 120, and the DC / DC converter according to the pulse width modulation signal generated by the charging controller 130. To 140 And a power controller 150 for controlling and outputting the level of the output charging voltage.

In addition, the charging control means 100 supplies the charging voltage output from the power controller 150 to the moving object 200 through the connection terminal 101, and when the charging voltage is an overvoltage, the charging voltage is automatically supplied to the moving object 200. A protection circuit 160 which blocks supply and receives battery temperature data and provides the battery temperature data to the CPU 120, and a user input / output unit 170 for inputting a function signal for selecting a function or determining a connection by a user. ), The communication interface unit 180 connected to the central processing unit 120 to communicate with other external devices, and whether or not the battery is installed in response to the display control signal generated by the central processing unit 120. It further includes an indicator 190 for visually displaying the voltage state of the.

A preferred embodiment of the power supply of the flat panel display surface inspector according to the present invention configured as described above, when the bridge 20 is moved in the vertical direction (up and down direction) for the flat display surface inspection, the vertical movement is completed The movable body 200 moves to the bridge 20 to the left and right to irradiate the light source to the inspection object.

Here, the movable body 200 includes a laser irradiator 210 for generating a light source, a power supply and charge controller 230 for controlling power supply and charging, a battery 220, a temperature detector 250, a power supply and a data connection terminal 240. Is embedded in one case, and is driven by a built-in battery without a separate power supply line, the movement is moved by a precision motor can effectively remove particles generated by laser transfer by the flux, etc. as in the prior art. . That is, particle generation due to laser transfer is suppressed.

Looking briefly at the operation of the moving object 200, when irradiating a light source to the inspection object, the power supply and charge controller 230 supplies the voltage discharged from the battery 220 to the laser irradiator 210, the power supplied to the The laser irradiator 210 is driven to irradiate a light source to the inspection object.

On the other hand, when the moving object 200 does not perform a test operation, the user artificially connects the power data connection terminal 240 of the moving object 200 to the connection terminal 101 in the charging control means 100 for charging. When the charging function signal is input through the user input / output unit 170, the central processing unit 120 recognizes this and controls the charging operation.

For charging, the battery voltage detector 110 detects the voltage discharged from the battery 220 through the connection terminal 101 and provides it to the CPU 120. Here, the voltage detector 110 may detect the voltage discharged from the battery by using the voltage detection resistor.

The central processing unit 120 searches for the detected voltage level and determines that the battery 220 is not mounted on the moving object 200 when the voltage is zero (0V), and controls the indicator 190 to visually display the battery free state. To be displayed. In this case, the indicator 190 may display a battery-free state using a light emitting diode. Alternatively, the display 190 may display a battery-free state using data using a liquid crystal display (LCD). In consideration of this, it is preferable to use a light emitting diode.

On the other hand, when a voltage is detected, the controller detects whether the detected voltage is a low voltage or a full charge voltage. When the voltage is full, the indicator 190 indicates that the charging is completed. A state indicating that the battery is being charged through 190 is displayed, and the DC / DC converter 140 and the charging controller 130 are controlled.

The DC / DC converter 140 converts a commercial AC power input to a predetermined DC voltage and converts the signal into a predetermined DC voltage, thereby providing the DC controller with a constant DC voltage using a constant voltage regulator (regulator).

The charging controller 130 generates a pulse width modulation signal (PWM signal) for controlling the charging voltage in response to the control of the central processing unit 120 to control the power controller 150, the power controller 150 is The drive transistor is driven by the PWM signal, and the power control transistor associated with the drive transistor is driven to appropriately control the power of the charging voltage provided from the DC / DC converter 140 to provide the protection circuit 160.

The protection circuit 160 supplies the moving object 200 through the connection terminal 101 when the provided charging voltage is not an overvoltage, and the power supply and the charging controller 230 in the moving object 200 provide the charged charge. The voltage is charged in the battery 220.

When charging is started, the temperature detector 250 detects the temperature of the battery 220 by using a thermistor for detecting an exothermic temperature and transfers temperature data to the power supply and charge controller 230, and the power supply and charge controller ( 230 transmits it to the charge control means 100 through the power and data connection terminal 240.

The protection circuit 160 in the charge control means 100 provides the transferred temperature data to the central processing unit 120, and the central processing unit 120 controls the charging by reflecting the transferred temperature data. Here, the charging control of the central processing unit 120 controls the charging by combining the battery voltage, the charging time, and the battery heating temperature detected by the battery voltage detecting unit 110, and controlling the charging using only one of them. You may.

3 illustrates a power supply process of a flat panel display surface inspector according to an exemplary embodiment of the present invention. Where S stands for Step.

As shown in FIG. 1, the first step (S101 ˜ S105) of detecting the voltage of the battery when the movable body 200 is connected by checking whether the movable body 200 is connected in the standby state, and the detected voltage level of the battery A second step (S107) of determining whether it is installed, a third step (S111 to S119) of controlling charging according to the detected voltage level when the battery is installed as a result of the determination, and an indicator when the battery is not installed as a result of the determination Through a fourth step (S109) for notifying the battery non-mounting state through.

The third step may include determining whether the voltage level of the battery is a low voltage, maintaining a charge standby state when the voltage level is not low, and performing charge control when the low voltage state is reached (S111 and S113), and whether charging is completed during charging. When the charging is completed by checking, displaying the charging completion state (S115, S117), and the step of terminating the charging after displaying the charging completion state (S119).

In the power supply process of the flat panel display surface inspector according to the preferred embodiment of the present invention, the central processing unit 120 in the charge control means 100 maintains the standby state in step S101, and the moving body 200 in step S103. It will check if is connected. Herein, whether the mobile 200 is connected or not is connected by the user artificially connecting the mobile 200 to the charging control means 100 and inputting a charging function signal through the user input / output unit 170 to determine whether the mobile 200 is connected. You will know.

When the movable body 200 is connected, the voltage of the battery is detected in step S105, and in step S107, whether the battery is mounted is checked through the detected voltage level. That is, when the detected voltage level of the battery is no voltage (0V), it is determined that the battery is not installed. In this case, the battery moves to step S109 to indicate that the battery is missing through the display 190.

In contrast, when the voltage of the battery is detected, it is checked in step S111 whether the voltage of the battery is a low voltage. Here, whether or not the low voltage may vary according to the characteristics of the built-in battery, and in consideration of the characteristics of the built-in battery, the low voltage is easily determined by storing a reference voltage for determining whether the low voltage is previously stored in the memory in the CPU 120. You can do it.

If it is determined that the low voltage state is not the low voltage state and the full charge state, the charging is not performed. In contrast, if it is determined that the low voltage state, the charging is started by controlling the DC / DC converter 140 and the charge controller 130 in step S113. Done. Here, the charging control, as is well known, controls the charging in consideration of the battery detection voltage, the charging time, and the battery temperature.

In step S115, it is determined whether the charging is completed, and if the charging is not completed, go to step S113 to continuously perform the charging operation, and if the charging is completed, go to step S117 to control the indicator 190 to display the charging completion. After that, the charging is terminated in step S119.

The present invention as described above, by supplying the power for driving the laser irradiator embedded in the moving object through the built-in battery, and automatically charging the built-in battery in the charge control means fixed to the fixed body, As such, it is possible to suppress particle generation due to the use of a flux for laser transfer.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

According to the present invention described above, there is an advantage that the mobility can be ensured by embedding a rechargeable battery in the laser coordinate pointing device installed on the moving object and pointing to the defect position.

In addition, since there is no use of a flux and the like for the transfer of the laser pointing device there is an effect that can prevent the generation of particles at the source.

In addition, by mounting the charging device to the device for transferring the moving object (bridge) there is an effect that can eliminate the inconvenience and inconvenience of charging according to the separate charging device provided.

Claims (12)

In the power supply of the surface inspector for inspecting the surface of the flat panel display having a stage on which the flat panel display to be inspected is placed, a bridge moving on the stage, etc., A moving object supplied with driving power through a built-in battery and providing a light source for recognizing a coordinate of a defect position of the flat panel display mounted on the stage; It includes a charge control means for providing a moving path of the mobile body and fixedly mounted to the bridge moving in the vertical direction of the stage to supply charging power to the mobile body, The movable body includes a laser irradiator for providing a light source to easily identify the defect position, a rechargeable internal battery for supplying driving power to the laser irradiator, and a power discharged from the internal battery. A power supply and charge controller which supplies driving power to the laser irradiator, charges the built-in battery with charging power supplied from the charge control means, and provides temperature detection data to the charge control means; And a power supply and a data connection terminal connected to the means to receive charging power, to transmit temperature detection data, and to provide a path for detecting a battery discharge voltage. delete The power supply device of claim 1, wherein the moving body further comprises a temperature detector configured to detect a temperature of the internal battery and provide the power supply and charge controller to the power supply and charge controller. The method of claim 1, wherein the charge control means, A connection terminal for providing a power and data connection path with the mobile body; A battery voltage detector configured to detect a voltage of a battery built into a moving object through the connection terminal; Central processing for controlling the entire operation of the charging control means, determining whether the battery is mounted or detached according to the voltage level detected by the battery voltage detector, generating a status display control signal, and generating a control signal for charging the battery. An apparatus; A charging controller for generating a pulse width modulated signal for charging according to a charging control signal generated by the central processing unit; A DC / DC converter for outputting a predetermined DC voltage as a charging voltage in response to a charging control signal generated by the central processing unit; A power controller for controlling and outputting a level of a charging voltage output from the DC / DC converter according to a pulse width modulation signal generated by the charging controller; The charging voltage output from the power controller is supplied to the moving object through the connection terminal, and when the charging voltage is overvoltage, the charging voltage is automatically blocked from being supplied to the moving object, and the battery temperature data is received and provided to the CPU A protection circuit; A user input / output unit for inputting a function signal for the user to select a function or determine a connection; And a communication interface unit connected to the central processing unit to communicate with another external device. The method of claim 4, wherein the charge control means, And a display for visually displaying whether the battery is installed and the voltage of the battery in response to the display control signal generated by the central processing unit. The method of claim 4, wherein the power controller, A drive transistor for generating a drive signal according to the pulse width modulation signal generated by the charge controller; And a power control transistor for controlling the power of the charging voltage output from the DC / DC converter in conjunction with the drive transistor. The method of claim 5, wherein the indicator, And a light emitting diode (LED) or a liquid crystal display (LCD) for visually displaying a no battery state, a low voltage state of the battery, and a charging state of the battery. The power supply apparatus of claim 4, wherein the central processing unit controls charging by combining or alternatively combining a battery detection voltage, a charging time, and a battery heating temperature during charging control. delete delete delete delete

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