KR200427343Y1 - LCD Inverter Reliability Checker - Google Patents

Abstract

LCD (Liquid Crystal Display (LCD)) In the inverter inverter reliability checker to verify the reliability by determining whether the drive of the drive, the vibration motor to test the strength and impact of the junction of the inverter, and formed on the top of the vibration motor An inverter mounting bracket for mounting an inverter, a fixing stand for forming an inverter mounting stand on both sides of the inverter mounting stand, and a fixing spring formed between the fixing stand and the inverter mounting stand to connect the fixing stand and the inverter mounting stand, An LCD backlight for checking whether the drive is turned on by checking the lighting of the inverter, a backlight mount formed under the LCD backlight to mount the LCD backlight, an air pressure supply unit supplying air pressure to the vibration motor, Supplied to the vibration motor through the air pressure supply unit A control unit for adjusting the air pressure and controlling the on / off of the vibration motor, a power supply unit for supplying power of the inverter and inverter dimming power, and measuring output current value and frequency of the inverter An oscilloscope and an on / off controller for controlling an on / off of the inverter provide an LCD inverter reliability checker.

LCD, inverter, lighting test, vibration test, vibration motor, LCD backlight

Description

Reliability tester for Liquid Crystal Display inverter

1 is a block diagram of an LCD inverter reliability checker according to the present invention.

Figure 2 is a block diagram showing the vibration test operation of the LCD inverter reliability tester according to the present invention.

3 is a circuit diagram of an on / off controller of an LCD inverter reliability tester according to the present invention;

4 is a view showing an embodiment of an LCD inverter reliability checker according to the present invention.
** SIGNS FOR MAIN PARTS OF THE DRAWINGS **
100: vibration motor 110: fixed stand
120: fixing spring spring 130: inverter mounting
140: backlight mounting 150: control unit
160: LCD backlight 170: constant temperature and humidity
200: power supply 210: oscilloscope

300: air pressure supply unit 400: on / off controller

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The present invention relates to an LCD (Liquid Crystal Display (LCD)) inverter reliability tester. More specifically, the lighting test is performed by the LCD backlight and the vibration test is performed through the vibration motor. The present invention relates to an LCD reliability checker for external control.

In general, due to the rapid market growth of liquid crystal displays (LCDs), the requirements of inverters for lighting and controlling LCD lamps are rapidly increasing. The LCD has a screen in which the amount of light beam supplied from the backlight unit is adjusted to a liquid crystal panel including a plurality of LCD switches and a plurality of control switches for switching image signals to be supplied to each of the liquid crystal cells. The desired image is displayed on the screen. Since the liquid crystal display device can be miniaturized as compared to the CRT, it is widely used not only for personal computers and laptops, but also for office automation equipment such as photocopiers, mobile phones and PDAs.

The liquid crystal display (LCD), unlike a plasma display panel (PDP) and a field emission display (FED), is non-light-emitting (light-receiving element) and thus cannot be used in a place without light. To compensate for this drawback, a backlight is used to illuminate the LCD's display surface uniformly. The backlight consumes less power, provides bright white light, and diffuses light onto the display surface using a diffuser plate. Cold Cathode Flourescent Lamps (CCFL) backlights having the characteristics of the most widely used, and an inverter is used to turn on the cold cathode fluorescent lamps and to adjust their brightness.

However, the conventional LCD inverter reliability checker was able to confirm the operation through the lighting test by the LCD backlight, but it could not perform the shock test function of the inverter which is vulnerable in the high temperature and low temperature environment. The test function had to be inspected, resulting in a prolonged inspection period and a high price of equipment.

The present invention has been devised to solve the above problems, an external oscilloscope, a power supply unit, an on / off controller, an air pressure supply unit, and an LCD backlight therein to form an LCD (Liquid Crystal Display). , LCD) Determines whether the inverter is driven by the lighting test of the inverter, and forms a vibration motor to adjust the air pressure supplied to the vibration motor through the air pressure supply unit and the control unit to test the impact of a vulnerable inverter at high and low temperatures It is an object of the present invention to provide an LCD inverter reliability tester which can improve reliability by detecting a connection failure by conducting a vibration test as well as a lighting test of the inverter.

The present invention is an LCD inverter reliability checker to verify the reliability by determining whether the LCD (Liquid Crystal Display, LCD) inverter,

Vibration motor to test the bonding strength and impact of the inverter;

An inverter mounting unit formed at an upper end of the vibration motor to mount an inverter;

Fixing rods formed on both sides of the inverter mounting bracket to fix the inverter mounting bracket;

A stator spring formed between the stator and the inverter mount to connect the mount and the inverter mount;

LCD backlight for determining whether the drive is driven by the lighting test;

A backlight mount formed below the LCD backlight to mount the LCD backlight;

An air pressure supply unit supplying air pressure to the vibration motor;

A control unit for adjusting the air pressure supplied to the vibration motor through the air pressure supply unit and controlling the on / off of the vibration motor;

A power supply unit supplying power of the inverter and inverter dimming power;

An oscilloscope measuring the output current value and frequency of the inverter;

And an on / off controller for controlling the on / off of the inverter.

In addition, the vibration motor is supplied with the air pressure through the air pressure supply unit by adjusting the air pressure by the control unit and controls the on (On) / off (Off) of the vibration motor to perform a vacuum test on the inverter It is done.
The lower end of the fixing spring is characterized in that it further comprises a thermo-hygrostat for maintaining the temperature and humidity according to the high temperature and low temperature for the vacuum test and the lighting test of the inverter.

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The on / off controller may be further configured to counter a digital timer for adjusting the on / off time of the inverter and the number of on / off times of the inverter. And a digital counter configured to reset when the (On) / off (off) count is the fourth.

The LCD inverter reliability tester may be configured to perform a lighting test and a vibration test for the plurality of inverters by forming several units in the chamber.

Hereinafter, with reference to the accompanying drawings to describe the present invention in detail.

1 is a block diagram of an LCD inverter reliability tester according to the present invention.

As shown in FIG. 1, the present invention has a vibration motor 100 configured to test the bonding strength and impact of the LCD inverter therein, and an inverter mounting unit mounted on the top of the vibration motor 100 to mount the inverter. 130 is formed on both sides of the inverter mounting unit 130, and formed between the fixing unit 110 and the fixing unit 110 and the inverter mounting unit 130 for fixing the inverter mounting unit 130 Forming a fixing spring (120) connecting the fixing unit 110 and the inverter mounting unit 130, the lower end of the fixing spring 120 according to the high and low temperature to perform the vacuum test and lighting test of the inverter A thermo-hygrostat 170 is formed to maintain temperature and humidity, and the air pressure supplied to one side of the thermo-hygrostat 170 is controlled by controlling the on / off of the vibration motor 100. The controller 150 is formed. The inverter mounting unit 130, the fixing unit 110 and the fixing spring 120 is stably attached to the inverter to fix the inverter when the vibration test by the vibration motor 100. In addition, the LED backlight 160 for determining whether the drive is turned on by the lighting test of the inverter and the backlight mounting unit 140 is formed on the bottom of the LCD backlight 160 to mount the LCD backlight 160.

In addition, the outside of the LCD inverter reliability tester and the air pressure supply unit 300 for supplying air pressure to the vibration motor 100, the power supply unit 200 for supplying the power of the inverter and the inverter dimming (Dimming) power and The oscilloscope 210 measures an output current value and a frequency of the inverter, and an on / off controller 400 that controls on / off of the inverter.

When the inverter is driven for a long time in a high temperature and low temperature environment, and performs a lighting test and a vibration test to determine whether the drive of the inverter to control the outside of the LCD inverter reliability tester.

Figure 2 is a block diagram showing the operation of the vibration motor according to the present invention.

As shown in FIG. 2, when the air pressure is supplied from the air pressure supply unit 300 to perform the vibration inspection of the inverter, the controller 150 adjusts the air pressure and turns on the vibration motor 100. By controlling the / off (Off) can perform a test function of the bonding strength and the impact of the inverter mounted on the inverter mounting unit 130, it is possible to improve the reliability by detecting the bonding failure.

3 is a circuit diagram of an on / off controller according to the present invention.

As shown in FIG. 3, when the on / off power is supplied from the power supply unit 200 to the on / off controller 400, the on / off power is supplied. ) On / Off time is controlled by the digital timer of the controller 400, and the On / Off signal controlled by the digital timer is turned on and off by the digital counter. The number of times of Off is counted and reset when the number of times of On and Off is the fourth time. The on / off signal controlled by the on / off controller 400 is input to an on / off terminal of the inverter to be turned on. Control Off / Off.

4 is a view showing an embodiment of an LCD inverter reliability checker according to the present invention.

As shown in FIG. 4, a plurality of LCD inverter reliability testers are formed in a chamber so that a lighting test and a vibration test can be performed on a large number of inverters.

As described above, although the preferred embodiment according to the present invention has been described, the present invention is not limited to the above-described embodiment, and the present invention belongs to the present invention without departing from the gist of the present invention as claimed in the following Utility Model Claims. Anyone with ordinary knowledge will have the technical spirit of the present invention to the extent that various modifications can be made.

The present invention forms an oscilloscope, a power supply unit, an on / off controller, an air pressure supply unit outside the LCD inverter reliability tester, and forms an LCD backlight therein to drive the inverter through a lighting test of the inverter. And by forming a vibration motor to control the air pressure supplied to the vibration motor and the on / off of the vibration motor through the air pressure supply unit and the control unit. Vibration test to test the joint strength and impact can be performed to check the lighting test and vibration test with the naked eye, there is an effect that can confirm the operation of the inverter at low and high temperatures.

In addition, the lighting test and the vibration test can be performed at the same time, thereby reducing the inspection time and eliminating the need for a separate vibration tester, thereby reducing the cost of the facility.

Claims (5)

In the LCD inverter reliability checker that verifies the reliability by determining whether the LCD (Liquid Crystal Display, LCD) inverter is driven, Vibration motor to test the bonding strength and impact of the inverter; An inverter mounting unit formed at an upper end of the vibration motor to mount an inverter; Fixing rods formed on both sides of the inverter mounting bracket to fix the inverter mounting bracket; A stator spring formed between the stator and the inverter mount to connect the mount and the inverter mount; LCD backlight for determining whether the drive is driven by the lighting test; A backlight mount formed below the LCD backlight to mount the LCD backlight; An air pressure supply unit supplying air pressure to the vibration motor; A control unit for adjusting the air pressure supplied to the vibration motor through the air pressure supply unit and controlling the on / off of the vibration motor; A power supply unit supplying power of the inverter and inverter dimming power; An oscilloscope measuring the output current value and frequency of the inverter; An LCD inverter reliability checker comprising: an on / off controller for controlling the on / off of the inverter. The method of claim 1, The vibration motor receives air pressure through an air pressure supply unit, adjusts the air pressure by the controller, and controls the on / off of the vibration motor to perform vacuum inspection on the inverter. LCD inverter reliability checker. The method of claim 1, An LCD inverter reliability tester further comprises a thermo-hygrostat that maintains temperature and humidity according to high and low temperatures for performing vacuum inspection and lighting test of the inverter at the lower end of the fixing spring. The method of claim 1, The on / off controller is a digital timer that controls the on / off time of the inverter and the on / off number of times of the on / off of the inverter to counter the on. LCD inverter reliability checker characterized in that it comprises a digital counter to be reset when the (4) / Off (4) times. The method of claim 1, The inverter inverter reliability checker is formed in the chamber, the inverter inverter reliability tester, characterized in that it is possible to perform the lighting test and the vibration test for the plurality of inverters.

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