KR100482820B1 - Gas pressure control apparatus and method for pdp module - Google Patents

Abstract

The gas pressure regulator of the PDP module of the present invention includes an atmospheric pressure measuring instrument for measuring atmospheric pressure, a gas inhaler for sucking gas in the PDP module to reduce the pressure in the PDP module, and injecting gas into the PDP module to inject the gas into the PDP module. And a gas ejector for increasing the pressure in the module, and a controller for driving the gas inhaler or the gas ejector such that the pressure in the PDP module is appropriate for the measured atmospheric pressure.

Description

GAS PRESSURE CONTROL APPARATUS AND METHOD FOR PDP MODULE}

The present invention relates to a plasma display panel (PDP) module, and more particularly, to a gas pressure regulating apparatus and method for a PDP module.

The PDP module, which can realize a large screen while being thin, is widely used as a large display device because of its high display quality, fast response speed, high reliability, and long life.

The PDP module seals the front glass and the rear glass with a partition, and injects a gas such as Ne + Ar or Ne + Xe between the front glass and the rear glass. When the voltages of the anode and the cathode are applied to the PDP module, neon light is emitted, and the neon light is used as display light.

Herein, the principle of AC PDP light emission will be briefly described. When an X electrode and a Y electrode having a pulse potential difference are added to the PDP module, discharge is caused according to the potential difference between the two electrodes. R, G and B phosphors are excited and emitted by ultraviolet rays generated at the time of discharge, and light emitted from the R, G and B phosphors is combined to display an image. The discharge varies depending on the type of discharge gas inside the PDP, the pressure, the secondary electron emission characteristics of the MgO protective film, the structure of the electrode and the driving conditions.

Generally, when producing a PDP module, gas is injected to have an appropriate pressure therein.

However, although the atmospheric pressure varies with time and place, conventionally, the internal pressure of the PDP module was kept constant regardless of the change in atmospheric pressure. Accordingly, conventionally, the atmospheric pressure between the production and use of the PDP module is different, and thus the panel shaking phenomenon occurs.

Accordingly, an object of the present invention is to provide an apparatus and method for controlling gas pressure of a PDP module that can adjust the pressure of the PDP module by adjusting the amount of gas injected into the PDP module.

Another object of the present invention is to provide an apparatus and a method for adjusting the gas pressure of a PDP module which can eliminate the panel shaking caused by the change of the atmospheric pressure by appropriately adjusting the pressure of the PDP module according to the change of the atmospheric pressure.

Gas pressure regulating device of the PDP module of the present invention for achieving the above object, an atmospheric pressure measuring device for measuring the atmospheric pressure, a gas inhaler for sucking the gas in the PDP module to reduce the pressure in the PDP module, the PDP module And a gas ejector for injecting gas into the gas to increase the pressure in the PDP module, and a controller for driving the gas inhaler or the gas ejector so that the pressure in the PDP module is appropriate for the measured atmospheric pressure.

Referring to FIG. 1, which shows a block diagram of a gas pressure regulating device of a PDP module according to a preferred embodiment of the present invention, the atmospheric pressure measuring device 100 measures atmospheric pressure and provides it to the controller 102. The controller 102 compares the atmospheric pressure provided by the atmospheric pressure gauge 100 with the pressure of the PDP module 108 by using a look-up table that records the atmospheric pressure and the pressure of the PDP module 108 in correspondence with each other. It is determined whether to increase or decrease the pressure of 108, and control the driving of the gas inhaler 104 or the gas outlet 106 according to the determination result. The memory unit 110 stores information about the lookup table and the pressure of the PDP module 108. The gas inhaler 104 sucks gas in the PDP module 108 to reduce the pressure of the PDP module 108. The gas discharger 106 injects gas into the PDP module 108 to increase the pressure of the PDP module 108. The gas sucked by the gas inhaler 104 is reused when the gas discharger 106 injects the gas into the PDP module 108.

Now, the gas pressure adjusting method of the PDP module 108 according to the preferred embodiment of the present invention will be described with reference to the flowchart of FIG. 2. When the atmospheric pressure gauge 100 measures the atmospheric pressure and provides the result of the measurement (step 200), the controller 102 of the PDP module 108 corresponding to the measured atmospheric pressure from the lookup table stored in the memory unit 110 is provided. Read the internal pressure (step 201). The control unit 102 checks whether the internal pressure of the PDP module 108 read out from the memory unit 110 is equal to the pressure of the actual PDP module 108 (step 202). If the pressure of the PDP module 108 is not the same as the pressure read from the memory unit 110, the controller 102 compares the pressure of the PDP module 108 with the pressure read from the memory unit 110. It is determined whether the pressure in the PDP module 108 should be increased or decreased (steps 204 and 214).

When the controller 102 determines that the pressure in the PDP module 108 needs to be increased, the controller 102 drives the gas ejector 106, opens the valve of the PDP module 108, and injects gas into the PDP module 108. (Steps 206-210). When the gas injection is completed, the control unit 102 locks the valve of the PDP module 108 (step 212).

On the other hand, if the controller 102 determines that the pressure in the PDP module 108 should be reduced, the gas inhaler 104 is driven, and then the valve of the PDP module 108 is opened and the gas in the PDP module 108 is released. Inhale (step 216 to 220). When the gas suction is completed, the control unit 102 locks the valve of the PDP module 108 (step 222).

As described above, the present invention has an advantage of controlling the pressure of the PDP module by adjusting the amount of gas injected into the PDP module.

In addition, the present invention has the advantage of eliminating the panel shaking caused by the change in atmospheric pressure by appropriately adjusting the pressure of the PDP module according to the change in atmospheric pressure.

delete

1 is a block diagram of a gas pressure regulating device of a PDP module according to an embodiment of the present invention.

2 is a flowchart of a gas pressure adjusting method of a PDP module according to a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: barometric pressure gauge 102: control unit

104: gas inhaler 106: gas exhauster

108: PDP module 110: memory unit

Claims (4)

In the gas pressure regulator of the PDP module, An atmospheric pressure measuring instrument for measuring atmospheric pressure, A gas inhaler which sucks gas in the PDP module to reduce pressure in the PDP module; A gas discharger for injecting gas into the PDP module to increase pressure in the PDP module; And a control unit for driving the gas inhaler or the gas discharger such that the pressure in the PDP module is appropriate to the measured atmospheric pressure. The method of claim 1, And a look-up table in which various atmospheric pressures and pressures of the PDP module suitable for each atmospheric pressure are corresponded to each other, thereby further comprising a memory unit which provides the controller with information on the pressure of the PDP module suitable for the atmospheric pressure measured. Gas pressure regulator. In the gas pressure control method of the PDP module, The first step of measuring atmospheric pressure, A second step of checking whether the measured atmospheric pressure is appropriate for the pressure in the PDP module; And if the pressure in the PDP module is not suitable for the atmospheric pressure, a third step of inhaling gas in the PDP module or injecting gas into the PDP module so that the pressure in the PDP module is appropriate for the atmospheric pressure. Gas pressure control method of PDP module. The method of claim 3, wherein the second step, With reference to the lookup table that corresponds various atmospheric pressures and pressures of the PDP module appropriate to each atmospheric pressure, the pressure of the PDP module corresponding to the measured atmospheric pressure and the pressure of the current PDP module are compared. A method for adjusting the gas pressure of a PDP module, characterized in that the pressure is determined to be suitable for the measured atmospheric pressure.