Noise test apparatus and method for testing a display panel using the same

A noise test apparatus includes a ground plate, a base plate including a ground plate, the ground plate being configured to support a display panel. A first antenna configured to receive electromagnetic waves irradiated by the display panel and disposed on the base plate adjacent to a first side of the ground plate. A second antenna configured to receive the electromagnetic waves irradiated by the display panel and disposed on the base plate adjacent to a second side of the ground plate, the second side extending substantially perpendicular to the first side.

This application claims priority to Korean Patent Application No. 10-2014-0031206, filed on Mar. 17, 2014, and all the benefits accruing therefrom under 35 U.S.C. §119, the content of which is herein incorporated by reference in its entireties.

BACKGROUND

Exemplary embodiments of the inventive concept relate to a noise test apparatus and a method for testing a display panel using the same. More particularly, exemplary embodiments of the inventive concept relate to a noise test apparatus capable of testing an electromagnetic interference (“EMI”) noise and a method for testing a display panel using the noise test apparatus.

2. Description of the Related Art

As wireless network communication is becoming more advanced, computers, laptop computers, tablet computers, televisions and the like are increasingly becoming sensitive to electromagnetic interference (“EMI”) due to increases in communication frequencies, the number of antennas and the like.

Accordingly, a noise test apparatus, which is used for testing a display panel, EMI, a throughput and the like before finishing a manufacturing process, is necessary. For example, the noise test apparatus may be also used for testing the EMI of a wireless local area network (“WLAN”) and the EMI of a wireless wide area network (“WWAN”).

A conventional testing jig used for testing the EMI may test an EMI noise of an end product such as laptop computers, tablet PCs, etc including a display panel. No apparatus and method for testing EMI noise of a display panel itself have been developed. Thus, the EMI noise of the display panel may be tested after assembling the display panel into an end product that may delay a detection of the defect in the display panel.

In addition, a structure of the conventional testing jig may not correspond to an inner antenna structure of the end products. Thus, an efficiency of testing an EMI noise of the end products may decrease.

SUMMARY

One or more exemplary embodiment of the inventive concept provides a noise test apparatus capable of testing an EMI noise.

One or more exemplary embodiment of the inventive concept also provides a method for testing a display panel using the noise test apparatus.

According to an exemplary embodiment, a noise test apparatus includes a base plate including a ground plate, a first antenna and a second antenna. The ground plate is configured to support a display panel. The first antenna is configured to receive electromagnetic waves irradiated by the display panel, and disposed on the base plate adjacent to a first side of the ground plate. The second antenna is configured to receive the electromagnetic waves irradiated by the display panel, and disposed on the base plate adjacent to a second side of the ground plate. The second side extends substantially perpendicular to the first side.

In an exemplary embodiment, the first antenna and the second antenna may be disposed on the base plate adjacent to a first corner formed by the first side and the second side of the ground plate.

In an exemplary embodiment, the noise test apparatus may further include a third antenna and a fourth antenna. The third antenna may be configured to receive the electromagnetic waves irradiated by the display panel, and disposed on the base plate adjacent to a third side of the ground plate opposite to the first side of the ground plate. The fourth antenna may be configured to receive the electromagnetic waves irradiated by the display panel, and disposed on the base plate adjacent to the second side of the ground plate.

In an exemplary embodiment, the first antenna and the second antenna may be on the base plate adjacent to a first corner formed by the first side and the second side of the ground plate. The third antenna and the fourth antenna may be on the base plate adjacent to a second corner formed by the second side and the third side of the ground plate.

In an exemplary embodiment, the noise test apparatus may further include a fifth antenna and a sixth antenna. The fifth antenna may be configured to receive the electromagnetic waves irradiated by the display panel, and disposed on the base plate adjacent to a fourth side of the ground plate opposite to the second side of the ground plate. The sixth antenna may be configured to receive the electromagnetic waves irradiated by the display panel, and disposed on the base plate adjacent to the fourth side of the ground plate.

In an exemplary embodiment, the noise test apparatus may further include a seventh antenna, an eighth antenna. The seventh antenna may be configured to receive the electromagnetic waves irradiated by the display panel, and disposed on the base plate adjacent to the first side of the ground plate. The eighth antenna may be configured to receive the electromagnetic waves irradiated by the display panel, and disposed on the base plate adjacent to the third side of the ground plate. The first antenna and the second antenna may be on the base plate adjacent to a first corner formed by the first side and the second side of the ground plate. The third antenna and the fourth antenna may be on the base plate adjacent to a second corner formed by the second side and the third side of the ground plate. The fifth antenna and the seventh antenna may be on the base plate adjacent to a third corner formed by the first side and the fourth side of the ground plate. The sixth antenna and the eighth antenna may be on the base plate adjacent to a fourth corner formed by the third side and the fourth side of the ground plate.

In an exemplary embodiment, the first antenna may be on the base plate adjacent to a center of the first side of the ground plate. The second antenna may be on the base plate adjacent to a first corner formed by the first side and the second side of the ground plate. The third antenna may be on the base plate adjacent to a center of the third side of the ground plate. The fourth antenna may be on the base plate adjacent to a second corner formed by the second side and the third side of the ground plate. The fifth antenna may be on the base plate adjacent to a third corner formed by the first side and the fourth side of the ground plate. The sixth antenna may be on the base plate adjacent to a fourth corner formed by the third side and the fourth side of the ground plate.

In an exemplary embodiment, each of the first antenna and the second antenna may include a circuit board including an antenna pattern.

In an exemplary embodiment, the ground plate may include an insulating material.

According to an exemplary embodiment, a method for testing a display panel includes driving a display panel, receiving electromagnetic waves irradiated by the display panel using a first noise test apparatus comprising a first antenna and a second antenna, where the first antenna is configured to receive the electromagnetic waves irradiated by the display panel along a first direction, and the second antenna is configured to receive the electromagnetic waves irradiated by the display panel along a second direction perpendicular to the first direction, analyzing an electromagnetic interference noise of the display panel based on the electromagnetic waves.

In an exemplary embodiment, the first noise test apparatus may further include a first ground plate configured to support the display panel, the first ground plate including an insulating material. The first antenna may be disposed on the base plate adjacent to a first side of the first ground plate. The second antenna may be disposed on the base plate adjacent to a second side of the first ground plate.

In an exemplary embodiment, the method may further include receiving electromagnetic waves by a second noise test apparatus including a third antenna and a fourth antenna. The third antenna may be configured to receive the electromagnetic waves irradiated by the display panel along a third direction opposite to the first direction. The fourth antenna may be configured to receive the electromagnetic waves irradiated by the display panel along the second direction.

In an exemplary embodiment, the second noise test apparatus may further include a second ground plate configured to support the display panel, the second ground plate including an insulating material. The third antenna may be disposed on the base plate adjacent to a third side of the second ground plate. The fourth antenna may be disposed on the base plate adjacent to a second side of the second ground plate.

In an exemplary embodiment, the first antenna may be on the base plate adjacent to a first corner of the first ground plate, which is formed by the first side and the second side of the first ground plate. The second antenna may be on the base plate adjacent to the first corner of the first ground plate. The third antenna may be on the base plate adjacent to a second corner of the second ground plate, which is formed by the second side and the third side of the second ground plate. The fourth antenna may be on the base plate adjacent to the second corner of the second ground plate.

In an exemplary embodiment, the first noise test apparatus may further include a third antenna and a fourth antenna. The third antenna may be configured to receive the electromagnetic waves irradiated by the display panel along a third direction opposite to the first direction. The fourth antenna may be configured to receive the electromagnetic waves irradiated by the display panel along the second direction. The third antenna may be disposed on the base plate adjacent to a third side of the first ground plate opposite to the first side of the first ground plate. The fourth antenna may be disposed on the base plate adjacent to the second side of the first ground plate.

In an exemplary embodiment, the first antenna may be on the base plate adjacent to a first corner of the first ground plate, which is formed by the first side and the second side of the first ground plate. The second antenna may be on the base plate adjacent to the first corner of the first ground plate. The third antenna may be on the base plate adjacent to a second corner of the first ground plate, which is formed by the second side and the third side of the first ground plate. The fourth antenna may be on the base plate adjacent to the second corner of the first ground plate.

In an exemplary embodiment, the first noise test apparatus may further include a fifth antenna, a sixth antenna, a seventh antenna, and an eighth antenna. The fifth antenna may be configured to receive the electromagnetic waves irradiated by the display panel along a fourth direction opposite to the second direction. The sixth antenna may be configured to receive the electromagnetic waves irradiated by the display panel along the fourth direction. The seventh antenna may be configured to receive the electromagnetic waves irradiated by the display panel along the first direction. The eighth antenna may be configured to receive the electromagnetic waves irradiated by the display panel along the third direction. The fifth antenna may be disposed on the base plate adjacent to a fourth side of the first ground plate opposite to the second side of the first ground plate, the fifth antenna being disposed on the base plate adjacent to a third corner of the first ground plate, which is formed by the first side and the fourth side of the first ground plate. The sixth antenna may be disposed on the base plate adjacent to the fourth side of the first ground plate, the sixth antenna being disposed on the base plate adjacent to a fourth corner of the first ground plate, which is formed by the third side and the fourth side of the first ground plate. The seventh antenna may be disposed on the base plate adjacent to the first side of the first ground plate, the seventh antenna being on the base plate adjacent to the third corner of the first ground plate. The eighth antenna may be disposed on the base plate adjacent to the third side of the first ground plate, the eighth antenna being on the base plate adjacent to the fourth corner of the first ground plate.

In an exemplary embodiment, the first noise test apparatus may further include a fifth antenna and a sixth antenna. The fifth antenna may be configured to receive the electromagnetic waves irradiated by the display panel along a fourth direction opposite to the second direction. The sixth antenna may be configured to receive the electromagnetic waves irradiated by the display panel along the fourth direction. The fifth antenna and the sixth antenna may be disposed adjacent to a fourth side of the first ground plate. The first antenna may be adjacent to a center of the first side of the first ground plate. The third antenna may be adjacent to a center of the third side of the first ground plate.

In an exemplary embodiment, the display panel may include a display part configured to display an image and a wireless network device. The driving the display panel may include driving the display part and driving the wireless network device.

In an exemplary embodiment, the wireless network device may be parallel with and adjacent to a first side of the display panel.

According to one or more exemplary embodiment of the noise test apparatus and the method for testing a display panel using the noise test apparatus, an EMI noise of wireless network system may be tested before the display panel is assembled into an end product. Defect such as the EMI noise of wireless network system may be recognized at an early stage of manufacturing the end product.

DETAILED DESCRIPTION

Hereinafter, the inventive concept will be explained in detail with reference to the accompanying drawings.

FIG. 1is a block diagram illustrating a panel testing system including a noise test apparatus according to an exemplary embodiment of the inventive concept.

Referring toFIG. 1, the panel test system includes a noise test apparatus100, a test driving part300and a noise analyzing part500.

The noise test apparatus100may receive electromagnetic waves irradiated by a target device such as a display panel200. The target device may be disposed on the noise test apparatus100. The noise test apparatus100may include a ground plate and at least one antenna. The ground plate may include an insulating material. The antennas may receive the electromagnetic waves irradiated by the target device. Hereinafter, the display panel200is referred to as the target device for convenience of explanation.

The antennas may receive the electromagnetic waves irradiated by the display panel200. Each of the antennas may include a circuit board type antenna which includes an antenna pattern formed on a circuit board. Alternatively, each of the antennas may be a conventional antenna which may receive electromagnetic waves.

The antennas may be preset to sense the electromagnetic waves having frequency in a range of about 740 MHz, 910 MHz, and 1940 MHz. For example, the antennas may be preset to sense the electromagnetic waves having a frequency between about 690 MHz and about 790 MHz. Alternatively, the antennas may be preset to sense the electromagnetic waves having a frequency about 860 MHz and about 960 MHz. Alternatively, the antennas may be preset to sense the electromagnetic waves having a frequency about 1890 MHz and about 1990 MHz.

The antennas may output the received electromagnetic waves to the noise analyzing part500.

Examples of the display panel200may include a liquid crystal display (“LCD”) panel, a plasma display panel (“PDP”), and an organic light-emitting diode (“OLED”) panel. The display panel200may be a panel before assembled into a complete display apparatus, for example, TV, note PC, Tablet PC, etc.

The display panel200may include a display part displaying an image and a wireless network device irradiating the electromagnetic waves. The wireless network device may include a wireless local area network (“WLAN”) and/or a wireless wide area network (“WWAN”). The wireless network device may be disposed in parallel with and adjacent to a first side of the display panel200.

The display panel200may be a display panel of a tablet display apparatus, but not limited thereto or thereby. The display panel200may include a display panel of a computer monitor, a laptop computer, a table PC and a television.

The display panel200may be disposed on the noise test apparatus100. The display part of the display panel200may face the ground plate of the noise test apparatus100. Alternatively, a rear surface opposite to the display part may face the ground plate of the noise test apparatus100.

The test driving part300may drive the display panel200. For example, the test driving part300may drive the display part and the wireless network device of the display panel200. When the test driving part300drives the display panel200, the display panel200displays an image and irradiates the electromagnetic waves.

The noise analyzing part500receives the electromagnetic waves from the antennas in the display panel200. A noise analyzer in the noise analyzing part500may analyze the noise from the display panel200and output an evaluation data, based on the electromagnetic waves received from the antennas. The evaluation data may include an EMI noise generated by the wireless network device. The noise analyzing part500may analyze the EMI noise generated by the wireless network device of the display panel200, based on the electromagnetic waves received from the antennas.

The noise analyzing part500may further include a spectrum analyzer. The spectrum analyzer may analyze a spectrum of the electromagnetic waves received from the antennas, and output an analyzed spectrum. The noise analyzing part500may receive the spectrum from the spectrum analyzer and output the evaluation data.

A method for testing the display panel200using the panel test system may include a step of driving the display panel200to irradiate the electromagnetic waves by using the test driving part300, a step of receiving the electromagnetic waves by using the noise test apparatus100, and a step of analyzing the noise of the display panel200based on the electromagnetic waves. The step of driving the display panel200may include a step of driving the display part of the display panel200and a step of driving the wireless network device of the display panel200.

The noise test apparatus100may include a first noise test apparatus and a second noise test apparatus. The first noise test apparatus and the second noise test apparatus are explained in detail referring toFIGS. 2 to 7.

FIG. 2is a perspective view illustrating a first noise test apparatus and a display panel ofFIG. 1.FIG. 3is a perspective view illustrating the first noise test apparatus ofFIG. 2.FIG. 4is a plan view illustrating the first noise test apparatus ofFIG. 2.FIG. 5is a perspective view illustrating a second noise test apparatus and a display panel ofFIG. 1.FIG. 6is a perspective view illustrating the second noise test apparatus ofFIG. 5.FIG. 7is a plan view illustrating the second noise test apparatus ofFIG. 5.

Referring toFIGS. 1 to 7, the noise test apparatus may include a first noise test apparatus101and a second noise test apparatus102.

A method for testing the display panel200using the panel test system may include a step of driving the display panel200to irradiate the electromagnetic waves by using the test driving part300, a step of receiving the electromagnetic waves by using the first noise test apparatus101, a step of receiving the electromagnetic waves by using the second noise test apparatus102, and a step of analyzing the noise of the display panel200based on the electromagnetic waves received from the first and second noise test apparatuses101and102. The step of driving the display panel200may include a step of driving the display part of the display panel200and a step of driving the wireless network device of the display panel200.

An order of the steps of receiving the electromagnetic waves by using the first and second noise test apparatuses101and102may be performed in reverse order. For example, the step of receiving the electromagnetic waves by using the first noise test apparatus101may be performed prior to the step of receiving the electromagnetic waves by using the second noise test apparatus102. Alternatively, the step of receiving the electromagnetic waves by using the second noise test apparatus102may be performed prior to the step of receiving the electromagnetic waves by using the first noise test apparatus101.

Referring toFIGS. 1 to 4, the first noise test apparatus101may include a base substrate110, a first antenna131and a second antenna132.

The base substrate110may have a substantially rectangular shape. Alternatively, the base substrate110may have a substantially circular shape, a triangular shape, a polygonal shape and the like according to the shape of the display panel200. The base substrate110may include an insulating material which is not effective to the electromagnetic waves. For example, the base substrate110may include rubber, reinforced plastic or a circuit board which does not include a circuit pattern.

The base substrate110may include a ground plate120. The ground plate120may be disposed on the base substrate110. The base substrate110includes an upper surface and a lower surface. The display panel200may be disposed on the upper surface of the base substrate110. For example, the ground plate120may be disposed on the lower surface of the base substrate110. Alternatively, the ground plate120may be disposed on the upper surface of the base substrate110. Alternatively, the ground plate120may be enclosed in the base substrate110.

The ground plate120may support the display panel200. The ground plate120may include an insulating material. For example, the ground plate120may include an insulating material the same as the insulating material of the base substrate110.

A size of the ground plate120may be less than a size of the base substrate110. Thus, edges of the ground plate120may be spaced apart from edges of the base substrate110by a uniform distance.

The size of the ground plate120may be greater than or equal to a size of the display panel200. The display panel200may overlap the ground plate120. For example, the display part of the display panel200may face the ground plate120. Alternatively, the rear surface of the display part may face the ground plate120.

The ground plate120includes a first side, a second side, a third side and a fourth side respectively corresponding to the first direction D1, a second direction D2perpendicular to the first direction D1, a third direction opposite to the first direction D1and a fourth direction opposite to the second direction D2.

The first antenna131may receive the electromagnetic waves irradiated by the display panel200. For example, the first antenna131may receive the electromagnetic waves irradiated by the display panel200along the first direction D1.

The first antenna131may be disposed adjacent to the first side of the ground plate120. The ground plate120includes a first corner formed by the first side and the second side. The first antenna131may be adjacent to the first corner of the ground plate120.

The first antenna131may include a circuit board type antenna which includes an antenna pattern formed on a circuit board. Thus, the first antenna131may be mounted on the base substrate110adjacent to the first side of the ground plate120.

The second antenna132may receive the electromagnetic waves irradiated by the display panel200. For example, the second antenna132may receive the electromagnetic waves irradiated by the display panel200along the second direction D2.

The second antenna132may be disposed adjacent to the second side of the ground plate120. The second antenna132may be adjacent to the first corner of the ground plate120.

The second antenna132may include the circuit board type antenna. Thus, the second antenna132may be mounted on the base substrate110adjacent to the second side of the ground plate120.

The display panel200may include the wireless network device210. The wireless network device210may be disposed in parallel with and adjacent to a first side of the display panel200. For example, the wireless network device210may be disposed on the rear surface of the display panel200adjacent to the first side of the display panel200.

The display panel200may be disposed on the first noise test apparatus101. The display part of the display panel200may face the ground plate120, and the first side of the display panel200may face the second direction D2. Thus, the first antenna131and the second antenna132may be positioned adjacent to the wireless network device210in the first and second directions D1and D2.

The second noise test apparatus102according to the illustrated exemplary embodiment is substantially the same as the first noise test apparatus101inFIGS. 2 to 4except that the second noise test apparatus102includes a third antenna133and a fourth antenna134instead of the first antenna131and the second antenna132. Thus, the same reference numerals will be used to refer to same or like parts as those described in with reference toFIGS. 2 to 4and any further repetitive explanation concerning the above elements will be omitted.

Referring toFIGS. 1 and 5 to 7, the second noise test apparatus102may include a base substrate110, a third antenna133and a fourth antenna134.

The base substrate110may include a ground plate120.

The ground plate120may support the display panel200. The ground plate120may include an insulating material. For example, the ground plate120may include an insulating material the same as the insulating material of the base substrate110.

The ground plate120includes a first side, a second side, a third side and a fourth side respectively corresponding to the first direction D1, the second direction D2, the third direction and the fourth direction.

The third antenna133may receive the electromagnetic waves irradiated by the display panel200. For example, the third antenna133may receive the electromagnetic waves irradiated by the display panel200along the third direction.

The third antenna133may be disposed adjacent to the third side of the ground plate120. The ground plate120includes a second corner formed by the second side and the third side. The third antenna133may be adjacent to the second corner of the ground plate120.

The third antenna133may include a circuit board type antenna which includes an antenna pattern formed on a circuit board. Thus, the third antenna133may be mounted on the base substrate110adjacent to the third side of the ground plate120.

The fourth antenna134may receive the electromagnetic waves irradiated by the display panel200. For example, the fourth antenna134may receive the electromagnetic waves irradiated by the display panel200along the second direction D2.

The fourth antenna134may be disposed adjacent to the second side of the ground plate120. The fourth antenna134may be adjacent to the second corner of the ground plate120.

The fourth antenna134may include the circuit board type antenna. Thus, the fourth antenna134may be mounted on the base substrate110adjacent to the second side of the ground plate120.

The display panel200may be disposed on the second noise test apparatus102. The display part of the display panel200may face the ground plate120, and the first side of the display panel200may face the second direction D2. Thus, the third antenna133and the fourth antenna134may be positioned adjacent to the wireless network device210in the third direction and the second direction D2.

In this exemplary embodiment, the panel test system may include the first noise test apparatus101and the second noise test apparatus102. The first noise test apparatus101may include the first and second antennas131and132adjacent to the wireless network device210of display panel200which generates a noise. The second noise test apparatus102may include the third and fourth antennas133and134adjacent to the wireless network device210.

The first noise test apparatus101may receive the electromagnetic waves irradiated by the display panel200. The second noise test apparatus102may receive the electromagnetic waves irradiated by the display panel200. Thus, the panel test system may analyze the noise of the display panel200based on the electromagnetic waves received by the first and second noise test apparatus101and102.

FIG. 8is a plan view illustrating a noise test apparatus according to an exemplary embodiment of the inventive concept.

A third noise test apparatus103according to the illustrated exemplary embodiment is substantially the same as the first noise test apparatus101inFIGS. 2 to 4except that the third noise test apparatus103further includes a third antenna133and a fourth antenna134. Thus, the same reference numerals will be used to refer to same or like parts as those described in with reference toFIGS. 2 to 4and any further repetitive explanation concerning the above elements will be omitted.

Referring toFIGS. 1 and 8, the noise test apparatus100may include a third noise test apparatus103.

A method for testing the display panel200using the panel test system may include a step of driving the display panel200to irradiate the electromagnetic waves by using the test driving part300, a step of receiving the electromagnetic waves by using the third noise test apparatus103, and a step of analyzing the noise of the display panel200based on the electromagnetic waves received from the third noise test apparatuses103. The step of driving the display panel200may include a step of driving the display part of the display panel200and a step of driving the wireless network device of the display panel200.

The third noise test apparatus103may include a base substrate110, a first antenna131, a second antenna132, a third antenna133and a fourth antenna134.

The base substrate110may include a ground plate120.

The ground plate120may support the display panel200. The ground plate120may include an insulating material. For example, the ground plate120may include an insulating material the same as the insulating material of the base substrate110.

The ground plate120includes a first side, a second side, a third side and a fourth side respectively corresponding to the first direction D1, the second direction D2, the third direction and the fourth direction.

The first antenna131may receive the electromagnetic waves irradiated by the display panel200. For example, the first antenna131may receive the electromagnetic waves irradiated by the display panel200along the first direction D1.

The first antenna131may be disposed adjacent to the first side of the ground plate120. The ground plate120includes a first corner formed by the first side and the second side. The first antenna131may be adjacent to the first corner of the ground plate120.

The first antenna131may include a circuit board type antenna which includes an antenna pattern formed on a circuit board. Thus, the first antenna131may be mounted on the base substrate110adjacent to the first side of the ground plate120.

The second antenna132may receive the electromagnetic waves irradiated by the display panel200. For example, the second antenna132may receive the electromagnetic waves irradiated by the display panel200along the second direction D2.

The second antenna132may be disposed adjacent to the second side of the ground plate120. The second antenna132may be adjacent to the first corner of the ground plate120.

The second antenna132may include the circuit board type antenna. Thus, the second antenna132may be mounted on the base substrate110adjacent to the second side of the ground plate120.

The third antenna133may receive the electromagnetic waves irradiated by the display panel200. For example, the third antenna133may receive the electromagnetic waves irradiated by the display panel200along the third direction.

The third antenna133may be disposed adjacent to the third side of the ground plate120. The ground plate120includes a second corner formed by the second side and the third side. The third antenna133may be adjacent to the second corner of the ground plate120.

The third antenna133may include the circuit board type antenna. Thus, the third antenna133may be mounted on the base substrate110adjacent to the third side of the ground plate120.

The fourth antenna134may receive the electromagnetic waves irradiated by the display panel200. For example, the fourth antenna134may receive the electromagnetic waves irradiated by the display panel200along the second direction D2.

The fourth antenna134may be disposed adjacent to the second side of the ground plate120. The fourth antenna134may be adjacent to the second corner of the ground plate120.

The fourth antenna134may include the circuit board type antenna. Thus, the fourth antenna134may be mounted on the base substrate110adjacent to the second side of the ground plate120.

The display panel200may include the wireless network device. The wireless network device may be disposed in parallel with and adjacent to a first side of the display panel200. For example, the wireless network device may be disposed on the rear surface of the display panel200adjacent to the first side of the display panel200. The display panel200may further include the wireless network device which is in parallel with and adjacent to a second side of the display panel200. The second side of the display panel200may be perpendicular to the first side of the display panel200.

The display panel200may be disposed on the third noise test apparatus103. The display part of the display panel200may face the ground plate120, and the first side of the display panel200may face the second direction D2. Thus, the first antenna131and the second antenna132may be positioned adjacent to the wireless network device in the first and second directions D1and D2. The third antenna133and the fourth antenna134may be positioned adjacent to the wireless network device in the third direction and the second direction D2respectively.

In this exemplary embodiment, the panel test system may include the third noise test apparatus103. The third noise test apparatus103may include the first, second, third and fourth antennas131,132,133and134adjacent to the wireless network device of display panel200which generates a noise.

The third noise test apparatus103may receive the electromagnetic waves irradiated by the display panel200. Thus, the panel test system may analyze the noise of the display panel200based on the electromagnetic waves received by the third noise test apparatus103.

FIG. 9is a plan view illustrating a noise test apparatus according to an exemplary embodiment of the inventive concept.

A fourth noise test apparatus104according to the illustrated exemplary embodiment is substantially the same as the third noise test apparatus103inFIG. 8except that the third noise test apparatus104further includes a fifth antenna135and a sixth antenna136, and positions of the first antenna131and the third antenna133are different. Thus, the same reference numerals will be used to refer to same or like parts as those described in with reference toFIG. 8and any further repetitive explanation concerning the above elements will be omitted.

Referring toFIGS. 1 and 9, the noise test apparatus100may include the fourth noise test apparatus104.

A method for testing the display panel200using the panel test system may include a step of driving the display panel200to irradiate the electromagnetic waves by using the test driving part300, a step of receiving the electromagnetic waves by using the fourth noise test apparatus104, and a step of analyzing the noise of the display panel200based on the electromagnetic waves received from the fourth noise test apparatuses104. The step of driving the display panel200may include a step of driving the display part of the display panel200and a step of driving the wireless network device of the display panel200.

The fourth noise test apparatus104may include a base substrate110, a first antenna131, a second antenna132, a third antenna133, a fourth antenna134, a fifth antenna135and a sixth antenna136.

The base substrate110may include a ground plate120.

The ground plate120may support the display panel200. The ground plate120may include an insulating material. For example, the ground plate120may include an insulating material the same as the insulating material of the base substrate110.

The ground plate120includes a first side, a second side, a third side and a fourth side respectively corresponding to the first direction D1, the second direction D2, the third direction and the fourth direction.

The first antenna131may receive the electromagnetic waves irradiated by the display panel200. For example, the first antenna131may receive the electromagnetic waves irradiated by the display panel200along the first direction D1.

The first antenna131may be disposed adjacent to the first side of the ground plate120. The first antenna131may be adjacent to a center of the first side of the ground plate120.

The first antenna131may include a circuit board type antenna which includes an antenna pattern formed on a circuit board. Thus, the first antenna131may be mounted on the base substrate110adjacent to the first side of the ground plate120.

The second antenna132may receive the electromagnetic waves irradiated by the display panel200. For example, the second antenna132may receive the electromagnetic waves irradiated by the display panel200along the second direction D2.

The second antenna132may be disposed adjacent to the second side of the ground plate120. The ground plate120includes a first corner formed by the first side and the second side. The second antenna132may be adjacent to the first corner of the ground plate120.

The second antenna132may include the circuit board type antenna. Thus, the second antenna132may be mounted on the base substrate110adjacent to the second side of the ground plate120.

The third antenna133may receive the electromagnetic waves irradiated by the display panel200. For example, the third antenna133may receive the electromagnetic waves irradiated by the display panel200along the third direction.

The third antenna133may be disposed adjacent to the third side of the ground plate120. The third antenna133may be adjacent to a center of the third side of the ground plate120.

The third antenna133may include the circuit board type antenna. Thus, the third antenna133may be mounted on the base substrate110adjacent to the third side of the ground plate120.

The fourth antenna134may receive the electromagnetic waves irradiated by the display panel200. For example, the fourth antenna134may receive the electromagnetic waves irradiated by the display panel200along the second direction D2.

The fourth antenna134may be disposed adjacent to the second side of the ground plate120. The ground plate120includes a second corner formed by the second side and the third side. The fourth antenna134may be adjacent to the second corner of the ground plate120.

The fourth antenna134may include the circuit board type antenna. Thus, the fourth antenna134may be mounted on the base substrate110adjacent to the second side of the ground plate120.

The fifth antenna135may receive the electromagnetic waves irradiated by the display panel200. For example, the fifth antenna135may receive the electromagnetic waves irradiated by the display panel200along the fourth direction.

The fifth antenna135may be disposed adjacent to the fourth side of the ground plate120. The ground plate120includes a third corner formed by the first side and the fourth side. The fifth antenna135may be adjacent to the third corner of the ground plate120.

The fifth antenna135may include the circuit board type antenna. Thus, the fifth antenna135may be mounted on the base substrate110adjacent to the fourth side of the ground plate120.

The sixth antenna136may receive the electromagnetic waves irradiated by the display panel200. For example, the sixth antenna136may receive the electromagnetic waves irradiated by the display panel200along the fourth direction.

The sixth antenna136may be disposed adjacent to the fourth side of the ground plate120. The ground plate120includes a fourth corner formed by the third side and the fourth side. The sixth antenna136may be adjacent to the fourth corner of the ground plate120.

The sixth antenna136may include the circuit board type antenna. Thus, the sixth antenna136may be mounted on the base substrate110adjacent to the fourth side of the ground plate120.

The display panel200may be disposed on the fourth noise test apparatus104. The display part of the display panel200may face the ground plate120, and the first side of the display panel200may face the second direction D2.

In this exemplary embodiment, the panel test system may include the fourth noise test apparatus104. The fourth noise test apparatus104may include the first to sixth antennas131to136adjacent to the wireless network device of display panel200which generates a noise.

The fourth noise test apparatus104may receive the electromagnetic waves irradiated by the display panel200. Thus, the panel test system may analyze the noise of the display panel200based on the electromagnetic waves received by the fourth noise test apparatus104.

FIG. 10is a plan view illustrating a noise test apparatus according to an exemplary embodiment of the inventive concept.

A fifth noise test apparatus105according to the illustrated exemplary embodiment is substantially the same as the third noise test apparatus103inFIG. 8except that the fifth noise test apparatus105further includes a fifth antenna135, a sixth antenna136, a seventh antenna137and an eighth antenna138. Thus, the same reference numerals will be used to refer to same or like parts as those described in with reference toFIG. 8and any further repetitive explanation concerning the above elements will be omitted.

Referring toFIGS. 1 and 10, the noise test apparatus100may include a fifth noise test apparatus105.

A method for testing the display panel200using the panel test system may include a step of driving the display panel200to irradiate the electromagnetic waves by using the test driving part300, a step of receiving the electromagnetic waves by using the fifth noise test apparatus105, and a step of analyzing the noise of the display panel200based on the electromagnetic waves received from the fifth noise test apparatuses105. The step of driving the display panel200may include a step of driving the display part of the display panel200and a step of driving the wireless network device of the display panel200.

The fifth noise test apparatus105may include a base substrate110, a first antenna131, a second antenna132, a third antenna133, a fourth antenna134, a fifth antenna135, a sixth antenna136, a seventh antenna137and eighth antenna138.

The base substrate110may include a ground plate120.

The ground plate120may support the display panel200. The ground plate120may include an insulating material. For example, the ground plate120may include an insulating material the same as the insulating material of the base substrate110.

The ground plate120includes a first side, a second side, a third side and a fourth side respectively corresponding to the first direction D1, the second direction D2, the third direction and the fourth direction.

The first antenna131may receive the electromagnetic waves irradiated by the display panel200. For example, the first antenna131may receive the electromagnetic waves irradiated by the display panel200along the first direction D1.

The first antenna131may be disposed adjacent to the first side of the ground plate120. The ground plate120includes a first corner formed by the first side and the second side. The first antenna131may be adjacent to the first corner of the ground plate120.

The first antenna131may include a circuit board type antenna which includes an antenna pattern formed on a circuit board. Thus, the first antenna131may be mounted on the base substrate110adjacent to the first side of the ground plate120.

The second antenna132may receive the electromagnetic waves irradiated by the display panel200. For example, the second antenna132may receive the electromagnetic waves irradiated by the display panel200along the second direction D2.

The second antenna132may be disposed adjacent to the second side of the ground plate120. The second antenna132may be adjacent to the first corner of the ground plate120.

The second antenna132may include the circuit board type antenna. Thus, the second antenna132may be mounted on the base substrate110adjacent to the second side of the ground plate120.

The third antenna133may receive the electromagnetic waves irradiated by the display panel200. For example, the third antenna133may receive the electromagnetic waves irradiated by the display panel200along the third direction.

The third antenna133may be disposed adjacent to the third side of the ground plate120. The ground plate120includes a second corner formed by the second side and the third side. The third antenna133may be adjacent to the second corner of the ground plate120.

The third antenna133may include the circuit board type antenna. Thus, the third antenna133may be mounted on the base substrate110adjacent to the third side of the ground plate120.

The fourth antenna134may receive the electromagnetic waves irradiated by the display panel200. For example, the fourth antenna134may receive the electromagnetic waves irradiated by the display panel200along the second direction D2.

The fourth antenna134may be disposed adjacent to the second side of the ground plate120. The fourth antenna134may be adjacent to the second corner of the ground plate120.

The fourth antenna134may include the circuit board type antenna. Thus, the fourth antenna134may be mounted on the base substrate110adjacent to the second side of the ground plate120.

The fifth antenna135may receive the electromagnetic waves irradiated by the display panel200. For example, the fifth antenna135may receive the electromagnetic waves irradiated by the display panel200along the fourth direction.

The fifth antenna135may be disposed adjacent to the fourth side of the ground plate120. The ground plate120includes a third corner formed by the first side and the fourth side. The fifth antenna135may be adjacent to the third corner of the ground plate120.

The fifth antenna135may include the circuit board type antenna. Thus, the fifth antenna135may be mounted on the base substrate110adjacent to the fourth side of the ground plate120.

The sixth antenna136may receive the electromagnetic waves irradiated by the display panel200. For example, the sixth antenna136may receive the electromagnetic waves irradiated by the display panel200along the fourth direction.

The sixth antenna136may be disposed adjacent to the fourth side of the ground plate120. The ground plate120includes a fourth corner formed by the third side and the fourth side. The sixth antenna136may be adjacent to the fourth corner of the ground plate120.

The sixth antenna136may include the circuit board type antenna. Thus, the sixth antenna136may be mounted on the base substrate110adjacent to the fourth side of the ground plate120.

The seventh antenna137may receive the electromagnetic waves irradiated by the display panel200. For example, the seventh antenna137may receive the electromagnetic waves irradiated by the display panel200along the first direction D1.

The seventh antenna137may be disposed adjacent to the first side of the ground plate120. The seventh antenna137may be adjacent to the third corner of the ground plate120.

The seventh antenna137may include the circuit board type antenna. Thus, the seventh antenna137may be mounted on the base substrate110adjacent to the first side of the ground plate120.

The eighth antenna138may receive the electromagnetic waves irradiated by the display panel200. For example, the eighth antenna138may receive the electromagnetic waves irradiated by the display panel200along the third direction.

The eighth antenna138may be disposed adjacent to the third side of the ground plate120. The eighth antenna138may be adjacent to the fourth corner of the ground plate120.

The eighth antenna138may include the circuit board type antenna. Thus, the eighth antenna138may be mounted on the base substrate110adjacent to the third side of the ground plate120.

The display panel200may be disposed on the fifth noise test apparatus105. The display part of the display panel200may face the ground plate120, and the first side of the display panel200may face the second direction D2.

In this exemplary embodiment, the panel test system may include the fifth noise test apparatus105. The fifth noise test apparatus105may include the first to eighth antennas131to138adjacent to the wireless network device of display panel200which generates a noise.

The fifth noise test apparatus105may receive the electromagnetic waves irradiated by the display panel200. Thus, the panel test system may analyze the noise of the display panel200based on the electromagnetic waves received by the fifth noise test apparatus105.

According to one or more of the illustrated exemplary embodiments, the noise test apparatus may include a plurality of antennas corresponding to a position of the wireless network device. The EMI noise of the display panel may be analyzed during a manufacturing process of the display panel. In addition, the EMI noise of the wireless network device of the display panel may be analyzed during a manufacturing process of the display panel. Thus, the EMI noise of the display panel may be tested before the display panel is assembled into the end product.

The noise test apparatus of the illustrated exemplary embodiments may be applied to an method for testing a display panel of a mobile type display apparatus such as a tablet computer, a mobile phone and a laptop computer, a display panel of a fixed type display such as a television and a desktop display, and a display panel of a display apparatus of a general appliance such as a refrigerator, a washing machine and an air conditioner.

The foregoing is illustrative of the inventive concept and is not to be construed as limiting claims. Although a few exemplary embodiments of the inventive concept have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of the inventive concept. Accordingly, all such modifications are intended to be included within the scope of the inventive concept as defined in the claims.