SUBSTRATE PROCESSING APPARATUS AND SPRAY MODULE OF SUBSTRATE PROCESSING APPARATUS

The present inventive concept relates to a substrate processing apparatus and a spray module of the substrate processing apparatus, the substrate processing apparatus comprising: a chamber for providing a processing space; a lid for covering the upper portion of the chamber; a substrate support portion which supports at least one substrate and rotates about a rotary shaft; a gas spray portion which is above the substrate support portion in a diameter direction from the rotary shaft of the substrate support portion and which sprays a processing gas; and a measuring portion which is arranged to be in parallel with or to be inclined in a direction at a certain angle with respect to the diameter direction on a measurement position that is spaced apart from the diameter direction and which measures the temperature of the substrate supported by the substrate support portion or the temperature of the substrate support portion.

TECHNICAL FIELD

The present disclosure relates to a substrate processing apparatus which performs a processing process such as a deposition process and an etching process on a substrate.

BACKGROUND ART

Generally, a thin-film layer, a thin-film circuit pattern, or an optical pattern should be formed on a substrate for manufacturing a solar cell, a semiconductor device, a flat panel display device, etc. To this end, a processing process is performed on a substrate, and examples of the processing process include a deposition process of depositing a thin film including a specific material on the substrate, a photo process of selectively exposing a portion of a thin film by using a photosensitive material, an etching process of removing the selectively exposed portion of the thin film to form a pattern, etc. Such a processing process is performed on a substrate by a substrate processing apparatus.

A substrate processing apparatus according to the related art includes a substrate supporting unit and a gas injecting unit which injects a processing gas toward the substrate supporting unit. The substrate supporting unit rotates about a rotation shaft. As the substrate supporting unit rotates about the rotation shaft, a substrate supported by the substrate supporting unit passes through a region under the gas injecting unit. In this process, a processing process is performed on the substrate by using a processing gas injected by the gas injecting unit.

In such a processing process, a temperature of the substrate acts as a significant factor. In order to reflect the temperature of the substrate in the processing process, the related art obtains a temperature distribution of the substrate by using thermocouple (TC) wafer before performing the processing process.

The substrate processing apparatus according to the related art may not obtain the temperature distribution of the substrate while the processing process is being performed, and thus, performs the processing process by predicting the temperature distribution of the substrate by using the temperature distribution of the substrate which is obtained before performing the processing process. However, due to a number of variables occurring in the middle of performing the processing process, a considerable difference between the predicted temperature distribution of the substrate and a real temperature distribution of the substrate occurs inevitably when the processing process is being performed. Due to such a difference, the substrate processing apparatus according to the related art has a problem where it is difficult to secure the uniformity of quality of a substrate on which the processing process is completed.

DISCLOSURE

Technical Problem

The present inventive concept is devised to solve the above-described problem and is for providing a substrate processing apparatuses and an injecting module thereof, which may enhance the uniformity of quality of a substrate on which a processing process is completed.

Technical Solution

To accomplish the above-described object, the present inventive concept may include the following elements.

An apparatus for processing substrate according to the present inventive concept may include: a chamber providing a processing space; a lid covering an upper portion of the chamber; a substrate supporting unit supporting at least one substrate and rotating about a rotation shaft; a gas injecting unit disposed over a diameter direction with respect to the rotation shaft of the substrate supporting unit to inject a processing gas; and a measurement unit measuring a temperature of a substrate supported by the substrate supporting unit or a temperature of the substrate supporting unit at a measurement position apart from the diameter direction. The measurement unit is disposed in parallel with the diameter direction or disposed to be inclined in a direction having a certain angle with respect to the diameter direction.

An injecting module of an apparatus for processing substrate according to the present inventive concept may include: an injecting hole for injecting a processing gas into a chamber where a processing process is performed on a substrate; an injecting body where the injecting hole is formed in plurality; and a measurement hole formed to pass through the injecting body at a position apart from the plurality of injecting holes. Some injecting holes among the plurality of injecting holes may be disposed in parallel along a diameter direction with respect to a rotation shaft of a substrate supporting unit, the substrate supporting unit supports a substrate and rotates in the chamber. The measurement hole is disposed to be apart from injecting holes disposed in parallel along the diameter direction. The measurement hole is disposed in parallel with the diameter direction or disposed to be inclined in a direction having a certain angle with respect to the diameter direction.

Advantageous Effect

According to the present inventive concept, the following effects may be obtained.

The present inventive concept is implemented to measure a temperature of a substrate or a temperature of a substrate supporting unit while a processing process is being performed on the substrate. Accordingly, the present inventive concept may enhance the uniformity of quality of a substrate on which the processing process is completed.

The present inventive concept is implemented so that a gas injecting unit maintains a state where the gas injecting unit is disposed in a diameter direction and a measurement unit measures a temperature of a substrate or a temperature of a substrate supporting unit at a measurement position at which interference with the gas injecting unit is reduced. Therefore, the present inventive concept may measure the temperature of the substrate or the temperature of the substrate supporting unit by using the measuring unit disposed at the measurement position and thus may obtain a temperature distribution of the substrate while a processing process is being performed, and moreover, may secure the stability of the processing process performed on the substrate by using the gas injecting unit disposed in the diameter direction.

MODE FOR INVENTION

Hereinafter, an embodiment of a substrate processing apparatus according to the present inventive concept will be described in detail with reference to the accompanying drawings. An injecting module of a substrate processing apparatus according to the present inventive concept may be included in a substrate processing apparatus according to the present inventive concept, and thus, will be described in conjunction with describing an embodiment of a substrate processing apparatus according to the present inventive concept.FIG.1is a side cross-sectional view illustrated by using a measurement line, illustrated inFIGS.5to8, as a cross-sectional line.

Referring toFIG.1, a substrate processing apparatus1according to the present inventive concept performs a processing process on a substrate100. The substrate100may be a glass substrate, a silicon substrate, a metal substrate, or the like. The substrate processing apparatus1according to the present inventive concept may perform a processing process such as a deposition process of depositing a thin film on the substrate100and an etching process of removing a portion of the thin film deposited on the substrate100. Hereinafter, an embodiment where the substrate processing apparatus1according to the present inventive concept performs the processing process will be mainly described, but it is obvious to those skilled in the art that an embodiment, where the substrate processing apparatus1according to the present inventive concept performs another processing process like the etching process, is deduced based thereon.

The substrate processing apparatus1according to the present inventive concept may include a substrate supporting unit2, a lid3, a gas injecting unit4, and a measurement unit5.

Referring toFIG.1, the substrate supporting unit2supports the substrate100. The substrate supporting unit2may be coupled to an inner portion of a chamber1awhich provides a processing space where the processing process is performed. The processing space may be disposed between the substrate supporting unit2and the lid3. A substrate entrance (not shown) may be coupled to the chamber1a. The substrates100may pass through substrate entrance and may be loaded into the chamber1aby a loading apparatus (not shown). When the processing process is completed, the substrates100may pass through substrate entrance and may be unloaded to the outside of the chamber1aby an unloading apparatus (not shown). An exhaust unit1bfor exhausting a gas, which is in the processing space, to the outside may be coupled to the chamber1a.

The substrate supporting unit2may rotate about a rotation shaft2a. As the substrate supporting unit2rotates about the rotation shaft2a, the substrate100supported by the substrate supporting unit2may pass through a region under the gas injecting unit4while rotating about the rotation shaft2a. In this process, a processing process on the substrate100may be performed by a processing gas injected by the gas injecting unit4. The substrate supporting unit2may support at least one substrate100. In a case where the substrate supporting unit2supports a plurality of substrates100, the substrates100may be disposed apart from one another with respect to the rotation shaft2a. A rotation apparatus (not shown) which provides a rotational force may be coupled to the substrate supporting unit2.

Referring toFIGS.1to3, the lid3covers an upper portion of the chamber1a. The lid3may be disposed upward apart from the substrate supporting unit2. InFIGS.2and3, the lid3is illustrated as being implemented in a hexagonal structure, but is not limited thereto and may be implemented in a polygonal structure such as an octagonal structure, a cylindrical structure, or an oval structure. The chamber1amay be implemented in a shape corresponding to the lid3.

Referring toFIGS.1to3, the gas injecting unit4injects a processing gas toward the substrate supporting unit2. The gas injecting unit4may be coupled to the lid3. Although not shown, the gas injecting unit4may be coupled to the chamber1aso as to be disposed between the lid3and the substrate supporting unit2.

The gas injecting unit4may include a first gas injecting module41which injects a first gas and a second gas injecting module42which injects a second gas. The first gas may be a source gas, and the second gas may be a reactant gas. The first gas injecting module41and the second gas injecting module42may be disposed apart from each other with respect to the rotation shaft2a. Therefore, when the substrate supporting unit2rotates about the rotation shaft2a, the substrate100may sequentially pass through a region under the first gas injecting module41and a region under the second gas injecting module42while rotating about the rotation shaft2a. Therefore, a processing process may be performed on the substrate100by using the first gas and the second gas. The gas injecting unit4may include a plurality of first gas injecting modules41. The gas injecting unit4may include a plurality of second gas injecting modules42.

The gas injecting unit4may include a purge gas injecting module43which injects a purge gas. The purge gas injecting module43may inject the purge gas, and thus, may divide a first region into which the first gas is injected and a second region into which the second gas is injected. Therefore, the purge gas injecting module43may prevent the first gas and the second gas from being mixed between the first region and the second region. When the substrate supporting unit2rotates about the rotation shaft2a, the substrate100may pass through a region under the purge gas injecting module43while rotating about the rotation shaft2a. In this process, a residual gas remaining on the substrate100may be purged by the purge gas. As illustrated inFIG.2, the purge gas injecting module43may be implemented in a dumbbell shape which crosses between the first gas injecting module41and the second gas injecting module42. As illustrated inFIG.3, the purge gas injecting module43may be implemented in a Y-shape. Although not shown, the pure gas injecting module43may be implemented in various shapes on the basis of the number of first gas injecting modules41and the number of second gas injecting modules42. The gas injecting unit4may include a plurality of purge gas injecting modules43.

Referring toFIGS.1to8, the gas injecting unit4may be disposed over a diameter direction with respect to the rotation shaft2aof the substrate supporting unit2. The diameter direction may denote a direction which passes through the rotation shaft2a. For example, as illustrated inFIGS.5to8, each of diameter lines RL passing through the rotation shaft2amay be disposed in the diameter direction. InFIGS.5to8, only four diameter lines RL extending in a radial direction with respect to the rotation shaft2ais illustrated, but are not limited thereto and all diameter lines RL extending in the radial direction with respect to the rotation shaft2amay be disposed in the diameter direction.

Referring toFIGS.1to8, the measurement unit5measures a temperature of the substrate100supported by the substrate supporting unit2. The measurement unit5may measure a temperature of the substrate supporting unit2. In this case, the temperature of the substrate supporting unit2includes a temperature of a portion, uncovered by the substrate100, of the substrate supporting unit2and a temperature of the substrate100. Hereinafter, measuring the temperature of the substrate supporting unit2should be construed as including the temperature of the portion, uncovered by the substrate100, of the substrate supporting unit2and the temperature of the substrate100. The measurement unit5may be disposed at a measurement position. The measurement position is a position apart from the diameter direction and denotes a position which is disposed in parallel with the diameter direction or disposed to be inclined in a direction having a certain angle. For example, as illustrated inFIGS.5to7, the measurement position may be disposed in a measurement line AL which is disposed apart from the diameter line RL and in parallel with the diameter line RL. As illustrated inFIG.8, the measurement position may be disposed in the measurement line AL which is disposed to be apart from the diameter line RL and to be inclined in a direction having a certain angle with respect to the diameter line RL. Therefore, the substrate processing apparatus1according to the present inventive concept is implemented so that the gas injecting unit4maintains a state where the gas injecting unit4is disposed in the diameter direction and the measurement unit5measures the temperature of the substrate100at a measurement position at which interference with the gas injecting unit4is reduced. The substrate supporting unit2may rotate so that the substrate100passes through a region under the measurement unit5in a process where the substrate100rotates to pass through a region under the gas injecting unit4. Therefore, the substrate processing apparatus1according to the present inventive concept may secure the stability of the processing process performed on the substrate100by using the gas injecting unit4disposed in the diameter direction, and moreover, may measure the temperature of the substrate100or the temperature of the substrate supporting unit2by using the measuring unit5disposed at the measurement position, thereby obtaining a temperature distribution of the substrate100while the processing process is being performed. Accordingly, the substrate processing apparatus1according to the present inventive concept may change a process condition on the basis of the temperature distribution of the substrate100obtained by using the measurement unit5, thereby enhancing the uniformity of quality of a substrate100on which the processing process is completed.

Here, when the measurement unit5is disposed to be apart from the diameter direction and to be inclined in a direction having a certain angle with respect to the diameter direction, the certain angle may denote an inclined angle ALA which is inclined with respect to a separation line SL disposed to be apart from and parallel to the diameter line RL as illustrated inFIG.8. The inclined angle ALA may be greater than 0 degrees and less than or equal to 45 degrees. In a case where the inclined angle ALA is greater than 45 degrees, a length may excessively increase so that the measurement unit5measures a total temperature of the substrate100, and thus, the substrate processing apparatus1according to the present inventive concept may be implemented so that the inclined angle ALA is less than or equal to 45 degrees.

The measurement unit5may be disposed to be parallel to the diameter direction or to be inclined in a direction having a certain angle at a measurement position apart from one of a plurality of diameter lines RL, and thus, may measure a temperature of the substrate100supported by the substrate supporting unit2or a temperature of the substrate supporting unit2. InFIG.5, it is illustrated that the measurement unit5is disposed in a measurement line AL which is apart from a diameter line RL disposed diagonally and parallel to a corresponding diameter line RL. InFIGS.6and7, it is illustrated that the measurement unit5is disposed in a measurement line AL which is apart from a diameter line RL disposed horizontally and parallel to a corresponding diameter line RL. InFIG.8, it is illustrated that the measurement unit5is disposed in a measurement line AL which is apart from a diameter line RL disposed horizontally and is inclined by a certain angle with respect to a corresponding diameter line RL. However, the present inventive concept is not limited to such embodiments, and the measurement unit5may be disposed at various positions for decreasing interference with the gas injecting unit4and measuring the temperature of the substrate100or the substrate supporting unit2. In this case, the measurement unit5may be disposed on a rotation path where the substrate100rotates based on a rotation of the substrate supporting unit2.

The measurement unit5may include a measurement mechanism51and a measurement hole52.

The measurement mechanism51measures the temperature of the substrate100or the temperature of the substrate supporting unit2. The substrate supporting unit2may rotate with respect to the rotation shaft2aso that the substrate100passes through a region under the measurement mechanism51. Therefore, the measurement mechanism51may measure the temperature of the substrate100passing through a region under the measurement hole52and the temperature of the substrate supporting unit2passing through the region under the measurement hole52to obtain temperature data. In this case, the measurement mechanism51may sequentially obtain temperature data of portions of the substrate100or portions of the substrate supporting unit2, and thus, may obtain a total temperature distribution of the substrate100or the substrate supporting unit2. Accordingly, the measurement mechanism51may obtain the temperature distribution of the substrate100while the processing process is being performed. The measurement mechanism51may be a line scanner which measures a temperature by using an infrared ray (IR).

The measurement mechanism51may measure the temperature of the substrate100passing through the region under the measurement hole52and the temperature of the substrate supporting unit2passing through the region under the measurement hole52. Therefore, even when the measurement mechanism51is disposed outside the processing space, the measurement mechanism51may measure, through the measurement hole52, the temperature of the substrate100or the temperature of the substrate supporting unit2, which is placed in the processing space. The measurement mechanism51may be disposed on the measurement hole52.

The measurement hole52may be disposed at the measurement position which is apart from the diameter direction. Therefore, the measurement hole52may be disposed to decrease interference with the gas injecting unit4. Because the measurement mechanism51is disposed on the measurement hole52, the measurement mechanism51may also be disposed to decrease interference with the gas injecting unit4.

The measurement hole52may be disposed in parallel with the diameter direction or disposed to be inclined in a direction having a certain angle with respect to the diameter direction, at the measurement position apart from the diameter direction. Therefore, the measurement mechanism51may sequentially obtain temperature data of portions of the substrate100or portions of the substrate supporting unit2, which pass through a region under the measurement hole52via the measurement hole52, and thus, may obtain a total temperature distribution of the substrate100. In this case, the measurement hole52may be formed to have a longer length than a diameter of the substrate100in a direction extending in parallel with the diameter direction. That is, the measurement hole52may be formed along the measurement line AL to have a longer length than the diameter of the substrate100. The measurement hole52may be formed to have a shorter length than the diameter of the substrate100with respect to a direction in which the substrate100rotates about the rotation shaft2a. The measurement hole52may be formed in a slit shape, which is wholly tetragonal, or a long hole shape which extends in parallel with the diameter direction.

Referring toFIGS.1to9, the measurement hole52may be formed in the gas injecting unit4. The measurement hole52may be formed in at least one of injecting modules40(illustrated inFIG.9) included in the gas injecting unit4. The injecting module40may be at least one of the first gas injecting module41, the second gas injecting module42, and the purge gas injecting module43. The injecting module40with the measurement hole52formed therein may correspond to an injecting module of the substrate processing apparatus according to the present inventive concept.

The injecting module40may include an injecting body40aand a plurality of injecting holes40b.

The injecting body40ais disposed on the substrate supporting unit2. The injecting body40amay be coupled to the lid3. The injecting body40amay be connected to a processing gas supply unit (not shown).

The injecting holes40bmay be formed in the injecting body40a. A processing gas supplied by the processing gas supply unit may move along an inner portion of the injecting body40aand then may be injected toward the substrate supporting unit2through the injecting holes40b. The injecting holes40bmay be disposed at positions apart from one another. Accordingly, the processing gas may be injected toward different portions of the substrate100through the injecting holes40b.

In this case, the measurement hole52may be formed to pass through the injecting body40aat a position apart from the injecting holes40b. The measurement hole52may be disposed to be apart from the injecting holes40bdisposed in parallel along the diameter direction among the injecting holes40b. The measurement hole52may be disposed in parallel with the diameter direction or disposed to be inclined in a direction having a certain angle with respect to the diameter direction. Accordingly, the measurement hole52is disposed to decrease interference with the injecting holes40band is implemented so that the measurement mechanism51sequentially obtains temperature data of portions of the substrate100or portions of the substrate supporting unit2to obtain a total temperature distribution of the substrate100. The injecting holes40bdisposed in parallel along the diameter direction denotes the injecting holes40bdisposed in the diameter line RL as illustrated inFIG.9.

The measurement hole52may be formed at a position which is apart from, by different distances, one side of the injecting body40aand the other side of the injecting body40awith respect to a direction in which the substrate100supported by the substrate supporting unit2rotates about the rotation shaft2a. That is, the measurement hole52may be formed at a position close to one portion of the one side of the injecting body40aand the other side of the injecting body40a. Accordingly, the measurement hole52may be disposed to decrease interference with the injecting holes40b. Also, the injecting holes40bmay be additionally disposed between the measurement hole52and the injecting holes40bdisposed in the diameter line RL.

Referring toFIGS.1and10, the measurement hole52may be formed in the purge gas injecting module43. In this case, comparing with a first embodiment where the measurement hole52is formed in the first gas injecting module41or the second gas injecting module42, a second embodiment where the measurement hole52is formed in the purge gas injecting module43may more decrease an influence of the measurement hole52on the processing process. This is because a gas injected by the first gas injecting module41or the second gas injecting module42affects the processing process directly, but the purge gas injected by the purge gas injecting module43does not directly affect the processing process. For example, in a case where the first gas injecting module41and the second gas injecting module42inject the source gas and the reactant gas, the source gas and the reactant gas affect a deposition performed on the substrate100directly, but the purge gas injected by the purge gas injecting module43does not directly affect the deposition process. Accordingly, the substrate processing apparatus1according to the present inventive concept is implemented so that the measurement hole52is formed in the purge gas injecting module43, and thus, may enhance the stability of the processing process and may enhance the quality of a substrate on which the processing process is completed.

The measurement hole52may be formed to pass through a purge gas injecting body430included in the purge gas injecting module43. The measurement mechanism51may be disposed on the purge gas injecting module43. The measurement mechanism51may be disposed on the measurement hole52and may measure the temperature of the substrate100through the measurement hole52.

The measurement hole52may be disposed to be apart from purge injecting holes431disposed in parallel along the diameter direction among a plurality of purge injecting holes431included in the purge gas injecting module43and to be parallel to the diameter direction. Although not shown, the measurement hole52may be disposed to be apart from the purge injecting holes431disposed in parallel along the diameter direction among the plurality of purge injecting holes431included in the purge gas injecting module43and to be inclined in a direction having a certain angle with respect to the diameter direction. Accordingly, the measurement hole52is disposed to decrease interference with the purge injecting holes431and is implemented so that the measurement mechanism51sequentially obtains temperature data of portions of the substrate100or portions of the substrate supporting unit2to obtain a total temperature distribution of the substrate100. The injecting holes431disposed in parallel along the diameter direction denotes the purge injecting holes431disposed in the diameter line RL as illustrated inFIG.10.

Although not shown, the measurement hole52may be formed in the lid3. In this case, the measurement mechanism51may be disposed at a position, corresponding to the measurement hole52, on the lid3. The measurement hole52may be formed to pass through the lid3. In this case, the measurement hole52may be formed at a portion, where the gas injecting unit4is not disposed, of the lid3.

Although not shown, the substrate processing apparatus1according to the present inventive concept may include a transparent window which is disposed to plug the measurement hole52. The measurement mechanism51may measure the temperature of the substrate100or the temperature of the substrate supporting unit2through the transparent window and the measurement hole52. In a case where the processing process is performed in a state where an inner portion of the processing space is vacuum, the transparent window may be disposed to plug the measurement hole52, and thus, may enable the inner portion of the processing space to be maintained in a vacuum state.

Referring toFIGS.1to14, the substrate processing apparatus1according to the present inventive concept may include a detector6.

The detector6detects the temperature distribution of the substrate100by using the temperature data obtained by the measurement mechanism51. The temperature data obtained by the measurement mechanism51may include a point-based temperature of the substrate100. The detector6may generate the total temperature distribution of the substrate100as a thermal image by using a plurality of temperature data obtained by the measurement mechanism51. In the thermal image, the point-based temperature of the substrate100may be displayed in a color corresponding thereto. A color-based temperature may be implemented as a lookup table-type storage data and may be previously stored in the detector6. When the measurement mechanism51measures the temperature of the substrate supporting unit2to obtain temperature data, the detector6may extract the temperature data of the substrate100from corresponding temperature data, and then, may detect the temperature distribution of the substrate100by using the extracted temperature data.

The detector6may include a generating module61and a conversion module62.

The generating module61generates a noncircular detection image representing the temperature distribution of the substrate100by using the plurality of temperature data obtained by the measurement mechanism51. The noncircular detection image may be implemented as a thermal image where the point-based temperature of the substrate100is expressed as a color. The generating module61may check the point-based temperature of the substrate100from the plurality of temperature data obtained by the measurement mechanism51and may match the point-based temperature of the substrate100with the storage data, thereby generating the noncircular detection image where the temperature distribution of the substrate100is expressed as a color. The noncircular detection image may be generated in a noncircular shape, and for example, as illustrated inFIG.13, may be generated as an oval detection image. The reason that the noncircular detection image is generated despite the substrate100having a circular shape is because, in a process of rotating the substrate100with respect to the rotation shaft2a, the measurement mechanism51measures the temperature of the substrate100or the temperature of the substrate supporting unit2, and moreover, measures the temperature of the substrate100to obtain the temperature data at the measurement position which is apart from the diameter direction. The plurality of temperature data obtained by the measurement mechanism51may be provided to the generating module61through wired communication, wireless communication, etc.

The generating module61may generate the noncircular detection image representing a temperature distribution corresponding to one rotation of the substrate100by using a rotation speed of the substrate supporting unit2and a measurement time of the measurement mechanism51used to obtain the plurality of temperature data. Therefore, when the plurality of temperature data are obtained in a process where a plurality of substrates100are mounted on the substrate supporting unit2and rotate by 360 degrees with respect to the rotation shaft2aa plurality of times, the generating module61may generate the noncircular detection image from pieces of temperature data, corresponding to a same number of rotations of the same substrate100, among the plurality of temperature data.

The conversion module62converts the noncircular detection image into a circular detection image corresponding to the substrate100. For example, the converting module62may convert the noncircular detection image, illustrated in FIG.13, into the circular detection image illustrated inFIG.14. Therefore, a worker may check the temperature distribution of the substrate100by using a temperature distribution which is discriminatively displayed in a color in the circular detection image on the basis of a temperature. Accordingly, the substrate processing apparatus1according to the present inventive concept may provide the worker with the circular detection image corresponding to the substrate100, thereby enhancing the easiness of an operation of checking the temperature distribution of the substrate100. Although not shown, the conversion module62may provide the circular detection image to a display apparatus (not shown). Also, the noncircular detection image may be provided from the generating module61to the conversion module62through wired communication, wireless communication, etc.

In a process of converting the noncircular detection image into the circular detection image by using the conversion module62, the conversion module62may consider an operation of measuring, by using the measurement mechanism51, the temperature of the substrate100or the temperature of the substrate supporting unit2to obtain temperature data and an operation of measuring, by using the measurement mechanism51, the temperature of the substrate100or the temperature of the substrate supporting unit2to obtain the temperature data at the measurement position apart from the diameter direction, in a process of rotating the substrate100with respect to the rotation shaft2a.

To this end, the conversion module62may calculate point-based coordinates of the substrate100by using at least one of a rotation speed of the substrate supporting unit2, a shortest separation distance SD, an inner included angle HA, an outer included angle OIA, and a middle included angle MIA, and then, may convert the noncircular detection image into the circular detection image on the basis of the calculated coordinates.

The shortest separation distance SD denotes a shortest distance among distances by which the measurement hole52is apart from the diameter direction. For example, the shortest separation distance SD may denote a distance by which the diameter line RL is rectilinearly apart from the measurement hole52. The diameter line RL may denote a virtual line which extends in the diameter direction.

The inner included angle IIA denotes an included angle between an inner connection line IL and the diameter line RL. The inner connection line IL denotes a virtual connection line which connects an inner end52aof the measurement hole52to the rotation shaft2a. The inner end52adenotes a portion of the measurement hole52facing the rotation shaft2a. The inner connection line IL may be a virtual connection line which connects a middle point of the inner end52ato the rotation shaft2a, with respect to a direction parallel to the shortest separation distance SD.

The outer included angle OIA denotes an included angle between an outer connection line OL and the diameter line RL. The outer connection line OL denotes a virtual connection line which connects an outer end52bof the measurement hole52to the rotation shaft2a. The outer end52band the inner end52adenote a portion of the measurement hole52facing each other. The outer connection line OL may be a virtual connection line which connects a middle point of the outer end52bto the rotation shaft2a, with respect to the direction parallel to the shortest separation distance SD.

The middle included angle MIA denotes an included angle between a middle connection line ML and the diameter line RL. The middle connection line ML denotes a virtual connection line which connects a middle end52cof the measurement hole52to the rotation shaft2a. The middle end52cdenotes a portion of the measurement hole52, which is apart from each of the inner end52aand the outer end52bby the same distance. The middle connection line ML may be a virtual connection line which connects a middle point of the middle end52cto the rotation shaft2a, with respect to the direction parallel to the shortest separation distance SD.

As described above, the conversion module62may calculate the point-based coordinates of the substrate100by using at least one of the rotation speed of the substrate supporting unit2, the shortest separation distance SD, the inner included angle HA, the outer included angle OIA, and the middle included angle MIA, and then, may convert the noncircular detection image into the circular detection image on the basis of the calculated coordinates. In this case, the point-based coordinates of the substrate100may correspond to absolute coordinates with respect to a real substrate100. When the point-based coordinates of the substrate100are calculated, the conversion module62may move a point-based temperature of the substrate100on the basis of the absolute coordinates, and thus, may convert the noncircular detection image into the circular detection image.

Referring toFIGS.1and11, the substrate processing apparatus1according to the present inventive concept may be implemented so that the temperature distribution of the substrate100detected by the detector6is reflected in a process condition of the processing process. In this case, the substrate processing apparatus1according to the present inventive concept may include a temperature controller7.

The temperature controller7controls a temperature of a substrate100mounted on the substrate supporting unit2. The temperature controller7may control the temperature of the substrate supporting unit2, and thus, may control the temperature of the substrate100through the substrate supporting unit2. In this case, the temperature controller7may be installed in the substrate supporting unit2. Although not shown, the temperature controller7may be implemented to control the temperature of the substrate100by using electricity. In this case, the temperature controller7may be implemented as an electric heater. Although not shown, the temperature controller7may be implemented to control the temperature of the substrate100by using a temperature control fluid. In this case, the temperature controller7may include a pipeline which is installed in the substrate supporting unit2, a pump which provides the temperature control fluid to the pipeline, and a control unit which controls a temperature of the temperature control fluid provided to the pipeline by the pump.

The temperature controller7may control a temperature of a substrate100, supported by the substrate supporting unit2, to a predetermined processing temperature by using the temperature distribution of the substrate100detected by the detector6. The predetermined processing temperature may vary based on the kind of the processing process, the kind of the substrate100, and the kind of a thin film and may be previously set by a worker.

The gas injecting unit4may stop injecting of a gas to the substrate supporting unit2until the temperature of the substrate100supported by the substrate supporting unit2is controlled to the processing temperature by using the temperature distribution of the substrate100detected by the detector6. When the temperature of the substrate100supported by the substrate supporting unit2is controlled to the processing temperature by using the temperature distribution of the substrate100detected by the detector6, the gas injecting unit4may start to inject the gas to the substrate supporting unit2. Accordingly, the substrate processing apparatus1according to the present inventive concept may enhance the uniformity of quality of a substrate on which a processing process is completed.

The present inventive concept described above are not limited to the above-described embodiments and the accompanying drawings and those skilled in the art will clearly appreciate that various modifications, deformations, and substitutions are possible without departing from the scope and spirit of the invention.