JP2008083418A - Protective sheet peeling apparatus and protective sheet peeling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a stable surface potential that is not affected by a peeling environment such as temperature and humidity and a peeling condition such as a peeling speed without performing a treatment on a polarizing plate surface when peeling a protective sheet from a liquid crystal panel. A protective sheet peeling device and a peeling method thereof are provided.
SOLUTION: A protective sheet 8 is peeled off from a liquid crystal panel 2 while a peeling portion 4 is moved, mist is generated, and the mist is blown out toward the surface of the liquid crystal panel 2 to which the protective sheet 8 is attached. The mist around the surface where the protective sheet 8 of 2 is affixed is sucked. The humidity around the surface of the liquid crystal panel 2 to which the protective sheet 8 is attached is detected, and the mist blowing amount, the mist suction amount, and the moving speed of the peeling unit 4 are controlled based on the detected humidity. .
[Selection] Figure 2

Description

  The present invention relates to a protective sheet peeling apparatus and a peeling method for peeling off a protective sheet attached to protect a polarizing plate of a liquid crystal panel.

  A cross-sectional view of the liquid crystal panel is shown in FIG. In the liquid crystal panel 100, electrodes 103 and 104 having a predetermined shape are formed on one surface of a light transmitting substrate 101 or 102 such as a glass substrate, and the surfaces on which the electrodes 103 and 104 are formed face each other. The light transmitting substrates 101 and 102 are bonded in parallel by a seal 113 with a spacer 105 interposed so that the distance between the substrates is uniform. A liquid crystal material 106 is sealed between the substrates, and polarizing plates 107 and 108 are attached to the surface of the light transmitting substrates 101 and 102 opposite to the surface on which the electrodes 103 and 104 are formed.

  In addition, there is a liquid crystal panel provided with a color filter 110 for enabling color display, such as an RGB (Red Green Blue) filter, in the above-described configuration.

Millions of thin film transistors (hereinafter referred to as TFT (Thin Film Transistor)) are used in a liquid crystal panel 100 typified by a recent television receiver (hereinafter referred to as TV). These TFTs are connected to each line and each pixel electrode at each location where m gate lines and n source lines intersect in accordance with the number of pixels in the m × n matrix form of the liquid crystal panel 100. When the TFT receives the scanning signal from the line and the image control signal from the source line, a predetermined voltage is applied to the pixel electrode for display operation formed in each pixel. Thereby, since ON / OFF of each pixel can be controlled, the target pixel can be surely turned on or off, and a high-definition image can be displayed. Further, a driver IC (Integrated circuit) for driving the TFT is connected to the gate line and the source line.

  Protective sheets 111 and 112 are attached to the surfaces of the polarizing plates 107 and 108 used in the liquid crystal panel 100 in order to prevent damage to the surfaces of the polarizing plates 107 and 108 during the manufacturing process of the liquid crystal panel 100. However, since the polarizing plates 107 and 108 are very easily charged, when the protective sheets 111 and 112 are finally peeled off, the surface of the polarizing plates 107 and 108 has a very high potential rise. I will invite you.

Due to the potential increase on the surfaces of the polarizing plates 107 and 108 generated when the protective sheets 111 and 112 are peeled off, a large amount of electric charge is instantaneously moved in the TFT and the electrode, causing the TFT and the insulating film of the TFT portion to be broken. End up.
In addition, since a large amount of charge instantaneously flows in the driver IC circuit via the gate line and the source line, the driver IC is also destroyed.
In order to solve the above-described problem, for example, in Patent Document 1, a high-resistance conductive agent having a resistance value of 10 9 ohms between the polarizing plates 107 and 108 and the protective sheets 111 and 112 is used. It is disclosed that it is possible to prevent the occurrence of display unevenness due to the application of, which can locally generate high potential portions on the surfaces of the polarizing plates 107 and 108 when the protective sheets 111 and 112 are peeled off.

JP 2000-35571 A

  However, even if the treatment as in Patent Document 1 is performed, there is a concern that the surface potential may increase depending on the peeling conditions such as the peeling environment and the peeling speed when peeling the protective sheet such as temperature and humidity.

  Further, the polarizing plate surface must be directly processed, and this processing step is not preferable in that the polarizing plate surface cannot be protected and the working efficiency is deteriorated.

  The present invention has been made in view of the above problems, and its purpose is to treat the polarizing plate surface when the protective sheet is peeled from the polarizing plate on the liquid crystal panel surface. Protective sheet peeling apparatus and its peeling method capable of maintaining a stable surface potential that is not affected by peeling conditions such as temperature and humidity and peeling conditions such as peeling speed and preventing TFT breakdown, insulating film breakdown and driver IC breakdown Is to provide.

The present invention is a peeling device for peeling off a protective sheet attached to protect the panel from the panel,
Detecting means for detecting the humidity around the surface of the panel where the protective sheet is affixed;
Mist generating means for generating mist and blowing the mist toward the surface on which the protective sheet of the panel is attached;
Mist suction means for sucking the mist around the surface to which the protective sheet of the panel is attached;
A peeling portion for peeling the protective sheet from the panel;
A moving part fixed to the peeling part and moving the peeling part;
Control means for controlling a mist blowing amount from the mist blowing means, a mist suction amount by the mist suction means, and a moving speed of the moving unit based on the humidity detected by the detection means. This is a protective sheet peeling device.

  In the protective sheet peeling apparatus of the present invention, the control means controls the humidity around the surface of the panel where the protective sheet is attached to 60% to 95%.

  In the protective sheet peeling apparatus of the present invention, the control means controls the moving speed of the moving unit based on the relationship between humidity and an optimum peeling speed.

  Moreover, the protective sheet peeling apparatus of the present invention is characterized in that the mist blowing means generates the mist from water and sets the average particle diameter of the mist particles to 5 μm or less.

  Moreover, the protective sheet peeling apparatus of this invention is characterized by the said mist blowing means producing | generating the said mist by an ultrasonic wave.

  Further, in the protective sheet peeling apparatus of the present invention, the mist blowing means and the mist suction means are moved in the same direction as the protective sheet peeling at the same speed as the protective sheet peeling speed together with the peeling of the protective sheet. It is characterized by.

  Moreover, the protective sheet peeling apparatus of the present invention includes a charge detection unit that detects a surface potential of the panel, and the charge detection unit is a surface opposite to a surface of the panel from which the protective sheet is peeled. The mist blowing amount from the mist blowing means, the mist suction amount by the mist suction means, and the moving speed of the moving part are controlled based on the detected surface potential.

  In the protective sheet peeling apparatus of the present invention, the charge detection unit is configured to detect the peeling boundary portion based on a correlation between a surface potential of the peeling boundary portion and a surface potential of a portion where the charge detection portion is disposed. It is characterized by detecting a surface potential.

  In the protective sheet peeling apparatus of the present invention, the charge detection unit is a surface potential meter.

  In the protective sheet peeling apparatus of the present invention, the panel is a liquid crystal panel, and the protective sheet is attached to a polarizing plate on the surface of the liquid crystal panel.

  Moreover, this invention is a peeling method which peels off the protective sheet stuck in order to protect the said panel from a panel, Comprising: The said protective sheet is peeled from the said panel, and a mist is produced | generated, while a peeling part moves And blowing the mist toward the surface of the panel where the protective sheet is affixed, sucking the mist around the surface of the panel where the protective sheet is affixed, It is a protective sheet peeling method characterized by detecting the humidity around the pasted surface and controlling the mist blowing amount, the mist suction amount, and the moving speed of the peeling portion based on the detected humidity.

  According to the present invention, in the peeling device that peels off the protective sheet attached to protect the panel from the panel, the detection means detects the humidity around the surface of the panel where the protective sheet is attached. The mist blowing means generates mist, blows out the mist toward the surface of the panel where the protective sheet is attached, and the mist suction means sucks the mist around the surface of the panel where the protective sheet is attached. The surface on which the protective sheet of the panel is affixed while preventing dew condensation by controlling the mist blowing amount from the mist blowing means and the mist suction amount by the mist suction means based on the humidity detected by the control means The surrounding humidity can be kept high, and the voltage on the panel surface can be kept low.

  Therefore, when the protective sheet is peeled from the panel, a stable surface potential that is not affected by the peeling environment such as temperature and humidity can be maintained without performing any treatment on the panel surface.

  Further, the peeling part is peeled off based on the obtained humidity by peeling the protective sheet from the panel while the peeling part is moved by the moving part and controlling the moving speed of the moving part based on the detected humidity. Since the protective sheet can be peeled from the panel while controlling the moving speed of the panel, an increase in the surface potential on the panel surface can be prevented.

  Therefore, when the protective sheet is peeled from the panel, a stable surface potential that is not affected by the peeling conditions such as the peeling speed can be maintained without performing treatment on the panel surface.

  Further, according to the present invention, the control means controls the humidity around the surface of the panel where the protective sheet is attached to 60% to 95%, so that the charged voltage on the panel surface can be reliably prevented while preventing condensation. It can be kept lower.

  According to the present invention, the control means can reliably prevent the surface potential from increasing on the surface of the panel by controlling the moving speed of the moving part based on the relationship between the humidity and the optimum peeling speed. Furthermore, the peeling speed can be increased as much as possible within the allowable range of the charged voltage, and the peeling time can be shortened.

  Further, according to the present invention, the mist blowing means generates mist from water and the average particle diameter of the mist particles is 5 μm or less, thereby preventing wetting in each part constituting the panel and the protective sheet peeling device. Can do.

  Moreover, according to this invention, the mist blowing means can produce | generate mist with a small average particle diameter of the mist particle | grains easily by producing | generating mist with an ultrasonic wave.

  Further, according to the present invention, the mist blowing means and the mist suction means move in the same direction as the protective sheet peeling at the same speed as the protective sheet peeling speed together with the peeling of the protective sheet on the surface of the panel. Humidity can be kept high while preventing condensation near the peeling boundary, and the charged voltage near the peeling boundary can be kept low.

  Further, the protective sheet peeling apparatus of the present invention includes a charge detection unit that detects the surface potential of the panel, and the charge detection unit is disposed on a surface opposite to the surface on which the protective sheet of the panel is peeled off. By doing so, the surface potential of the panel can be easily detected without interfering with the protective sheet to be peeled off.

  Further, the charge detection unit controls the mist blowing amount from the mist blowing unit, the mist suction amount by the mist suction unit, and the moving speed of the moving unit based on the detected surface potential, thereby further increasing the potential on the panel surface. It can be surely prevented. Furthermore, as compared with the case of only control based on humidity, the peeling speed can be increased as much as possible within the allowable range of the charged voltage, and the peeling time can be further shortened.

  According to the invention, the charge detection unit detects the surface potential of the separation boundary portion based on the correlation between the surface potential of the separation boundary portion and the surface potential of the portion where the charge detection portion is disposed. Thus, even if the charge detection unit is disposed on the surface opposite to the surface on which the protective sheet of the panel is peeled, the surface potential of the peeling boundary portion of the panel can be detected.

  Further, according to the present invention, the surface potential of the panel can be detected more quantitatively because the charge detection unit is a surface potential meter.

  Further, according to the present invention, the panel is a liquid crystal panel, and the protective sheet is attached to the polarizing plate on the surface of the liquid crystal panel. Can be maintained without being affected by the peeling environment such as temperature and humidity and the peeling conditions such as the peeling speed, and the TFT breakdown, insulating film breakdown and driver IC when peeling the protective sheet Destruction can be prevented.

  Further, according to the present invention, in the peeling method for peeling the protective sheet attached to protect the panel from the panel, the protective sheet is peeled off from the panel while the peeling portion is moved, and a mist is generated. Blow out the mist toward the surface where the protective sheet is attached, suck the mist around the surface where the protective sheet of the panel is attached, and around the surface where the protective sheet of the panel is attached The humidity is detected, and the mist blowing amount, the mist suction amount, and the moving speed of the peeling portion are controlled based on the detected humidity.

  As a result, the mist blowing amount and the mist suction amount can be controlled based on the obtained humidity, so that the humidity around the surface on which the protective sheet of the panel is affixed can be kept high while preventing condensation. The charged voltage on the surface can be kept low.

  Therefore, when the protective sheet is peeled from the panel, a stable surface potential that is not affected by the peeling environment such as temperature and humidity can be maintained without performing any treatment on the panel surface.

  Moreover, since a protective sheet can be peeled from a panel, controlling the moving speed of a peeling part based on the obtained humidity, the raise of the surface potential in a panel surface can be prevented.

  Therefore, when the protective sheet is peeled from the panel, a stable surface potential that is not affected by the peeling conditions such as the peeling speed can be maintained without performing treatment on the panel surface.

The present invention will be specifically described below with reference to embodiments, but the present invention is not particularly limited as long as it does not exceed the gist thereof.
The protective sheet peeling apparatus of the present invention is an apparatus for peeling off a protective sheet that is attached for the purpose of protecting the polarizing plate surface in order to prevent damage to the polarizing plate on the surface of the liquid crystal panel during work during manufacture. The detecting means for detecting the humidity around the surface on which the protective sheet of the liquid crystal panel is attached and the mist are generated, and the mist is blown toward the surface on which the protective sheet of the liquid crystal panel is attached. Mist blowing means, mist suction means for sucking mist around the surface where the protective sheet of the liquid crystal panel is attached, a peeling part for peeling the protective sheet from the polarizing plate, and a peeling part fixed to the peeling part A moving unit for moving the mist, a mist blowing amount from the mist blowing unit based on the humidity detected by the detecting unit, a mist suction amount by the mist suction unit, and a moving unit And a control means for controlling the moving speed.

  FIG. 1 is a graph outlining the change in surface potential at the peeling boundary with respect to the time from peeling of the protective sheet.

  As shown in the graph of FIG. 1, when the protective sheet is peeled off from the polarizing plate on the surface of the liquid crystal panel, due to the charging phenomenon at the time of peeling, the part of the protective sheet peeled off and the part not peeled off At the separation boundary portion, which is the boundary portion, the surface potential increases instantaneously and then gradually decreases. This instantaneous increase in surface potential leads to a large amount of charge transfer in the electric circuit of the liquid crystal panel, and in the worst case, electric circuit destruction such as TFT destruction, insulating film destruction and driver IC destruction occurs.

  The protective sheet peeling apparatus of the present invention is an apparatus that can prevent the increase of the surface potential that occurs instantaneously at the time of peeling the protective sheet as described above, and the surface potential due to peeling charging with respect to the change in humidity and the change in peeling speed. It uses changes in the amount of increase.

  That is, by increasing the humidity around the surface where the protective sheet of the liquid crystal panel is attached, it is possible to reduce the amount of momentary increase in surface potential and to prevent electrical circuit breakdown.

  In the present invention, when the humidity around the surface on which the protective sheet of the liquid crystal panel is attached is detected, and the mist is blown toward the surface on which the protective sheet of the liquid crystal panel is attached based on the detected humidity. By controlling the amount of mist blown out and the amount of mist suction when sucking mist around the surface where the protective sheet of the LCD panel is attached, the surface of the surface where the protective sheet of the LCD panel is attached is controlled. Control ambient humidity. Accordingly, the humidity around the surface of the liquid crystal panel on which the protective sheet is attached can be kept high while preventing condensation, and the voltage on the polarizing plate surface can be kept low.

  Therefore, when the protective sheet is peeled off from the polarizing plate on the surface of the liquid crystal panel, a stable surface potential that is not affected by the peeling environment such as temperature and humidity can be maintained without performing treatment on the surface of the liquid crystal panel. .

  Further, the moving speed of the peeling portion is controlled based on the detected humidity. Thereby, the moving speed of a peeling part can be controlled to the extent which suppresses the raise of the surface potential in a polarizing plate surface, and an electric circuit destruction can be prevented.

  Accordingly, when the protective sheet is peeled from the polarizing plate on the surface of the liquid crystal panel, a stable surface potential that is not affected by the peeling conditions such as the peeling speed can be maintained without performing treatment on the surface of the liquid crystal panel.

  Therefore, the protective sheet peeling apparatus of this invention can prevent TFT destruction at the time of protective sheet peeling, insulating film destruction, and driver IC destruction.

Embodiments of the present invention will be described below in detail with reference to the drawings.
(First embodiment)
FIG. 2 is a schematic diagram of the protective sheet peeling apparatus 1 according to the first embodiment of the present invention, and FIG. 3 is a schematic diagram illustrating an example of a method for fixing one end of the protective sheet 8.

  As shown in FIG. 2, the polarizing plate 7 on the surface of the liquid crystal panel 2 applied to the protective sheet peeling apparatus 1 according to the first embodiment of the present invention has a protective sheet 8 for protecting the polarizing plate 7. It is pasted.

  The size of the liquid crystal panel 2 is not particularly limited. For example, the liquid crystal panel 2 may have a size in which one side obtained after the panel dividing step for making a TV size exceeds 400 mm.

  The material of the protective sheet 8 is not particularly limited, but a laminate film made of a resin resistant to scratches, such as a polyester resin or a nylon resin, is preferable. Moreover, it is preferable that the protective sheet 8 is the same size as the polarizing plate 7 and a size about 5 mm to 10 mm smaller than the ends of the four sides of the liquid crystal panel.

  In the protective sheet peeling apparatus 1, the liquid crystal panel 2 is installed on a table 5 and fixed by a plurality of suction cups that suck the liquid crystal panel 2 using a vacuum differential pressure embedded in the table 5.

  The fixing means of the liquid crystal panel 2 is not limited to the above configuration, and may be any shape as long as the liquid crystal panel 2 can be fixed.

  A peeling part 4 for peeling the protective sheet 8 is arranged at one end of the liquid crystal panel 2, and a protective sheet holding part 6 for fixing one end of the protective sheet 8 is arranged at the peeling part 4. Yes.

  A method for fixing one end of the protective sheet 8 is not particularly limited. For example, as shown in FIG. 3, at one of at least four corners of the protective sheet 8 attached on the polarizing plate 7. There is a method in which, after affixing the peeling tape 20 having a predetermined dimension, the protrusion 21 is formed at a predetermined angle, and the protrusion 21 is held by the protective sheet holding part 6 of the peeling part 4.

  The peeling unit 4 is fixed to the rail 3 for moving the peeling unit 4, and is connected to a peeling unit drive system 13 that controls the moving speed of the peeling unit 4.

  It is possible to peel the protective sheet 8 from the polarizing plate 7 by moving the peeling portion 4 on the rail 3 toward one end opposite to one end of the protective sheet 8 held by the protective sheet holding portion 6. it can.

  Examples of the structure of the rail 3 include a linear motor and a linear guide stage driven by a ball screw, but are not particularly limited thereto.

  Around the surface of the liquid crystal panel 2 where the protective sheet 8 is attached, the mist generated by a mist generator (not shown) is indicated in the mist blowing direction indicated by the arrow 11, that is, the protective sheet 8 of the liquid crystal panel is attached. A mist blowing nozzle 9 for blowing in the direction of the surface to be disposed is disposed, and a mist suction nozzle 10 is disposed at a position facing the mist blowing nozzle 9. The mist suction nozzle 10 sucks the mist around the surface of the liquid crystal panel 2 on which the protective sheet 8 is affixed in the mist suction direction indicated by the arrow 12, that is, in the direction of the mist suction nozzle 10.

  The mist is generated from water, and the average particle size of the mist particles is preferably 5 μm or less. When the average particle size of the mist particles is 5 μm or less, even if the mist particles hit an object due to the surface tension of the mist particles, it is difficult to get wet. Therefore, wetting at each part constituting the liquid crystal panel 2 and the protective sheet peeling apparatus 1 can be prevented. The water used for the mist is more preferably pure water having a resistivity of about 1 MΩ · cm to 10 MΩ · cm.

  In order to generate mist particles having such an average particle diameter, it is preferable to use ultrasonic waves. By increasing the frequency of the ultrasonic waves, the mist particles can be made finer, so that a mist having a small average particle diameter of the mist particles can be easily generated.

  In addition, a temperature / humidity detection unit 16 that is a probe for detecting temperature and humidity is provided around the center of the surface of the liquid crystal panel 2 on which the protective sheet 8 is affixed. Is connected to a temperature hygrometer 15 for measuring the measured temperature and humidity.

  Inside the table 5 is provided a table temperature detector 17 which is a probe for detecting the temperature of the surface of the table 5 on which the liquid crystal panel 2 is installed, and the table temperature detector 17 detects the detected temperature. Is connected to a table thermometer 18.

  Further, a heating element 19 is provided inside the table 5, and this heating element 19 is connected to a power feeding circuit 22 for causing a current to flow through the heating element 19 to generate heat.

  The heating element 19 is not particularly limited as long as it generates heat when supplied with current, and examples thereof include a heating wire such as a chromium wire and a nickel-chrome wire.

  The mist blowing nozzle 9, the mist suction nozzle 10, the temperature / humidity meter 15, the peeling unit drive system 13, the table thermometer 18 and the power supply circuit 22 are connected to the control circuit 14.

  The temperature and humidity around the surface of the liquid crystal panel 2 to which the protective sheet 8 is attached are input to the control circuit 14.

  The control circuit 14 controls the mist blowing amount from the mist blowing nozzle 9 and the mist suction amount by the mist suction nozzle 10 based on the input humidity, so that the protective sheet 8 of the liquid crystal panel 2 is attached. The humidity around the surface is controlled as shown below.

  FIG. 4 is a graph showing the relationship between humidity and charged voltage. As can be seen from FIG. 4, the higher the humidity, the smaller the charged voltage. When the humidity exceeds 60%, the amount of decrease in the charged voltage with respect to the increase in humidity becomes smaller. Further, since condensation occurs when the humidity reaches 100%, in the protective sheet peeling apparatus 1 according to the first embodiment of the present invention, the humidity around the surface of the liquid crystal panel 2 to which the protective sheet 8 is attached is 60%. Control to keep within -95% range. Thereby, the charged voltage on the surface of the polarizing plate 7 can be suppressed while preventing condensation.

  Since the charged voltage decreases as the humidity increases, a relatively high humidity value, for example, 90% is set as a target value within the range of 60% to 95%, and the protective sheet 8 of the liquid crystal panel 2 is You may control so that the humidity around the surface currently affixed may approach this value.

  Moreover, the control circuit 14 calculates the moving speed of the peeling part 4 as shown below based on the input humidity.

  The charging state due to the peeling of the protective sheet 8 varies depending on various conditions such as the material of the protective sheet 8 and the polarizing plate 7, the peeling speed, and the peeling environment. The charged voltage also varies depending on conditions such as the size of the liquid crystal panel 2, the wiring pattern, and the type of substrate.

  Therefore, the peeling test of the protective sheet 8 is performed under various conditions in which the material of the protective sheet 8 and the polarizing plate 7 and the size of the liquid crystal panel 2 are different, and the correlation between the humidity and the optimum peeling speed in each condition is obtained. Create a database that stores them. Then, by inputting information on conditions such as the material of the protective sheet 8 and the polarizing plate 7 and the size of the liquid crystal panel 2 in this database, the correlation between the humidity close to the inputted conditions and the optimum peeling speed can be acquired. Keep it.

  Before the start of peeling of the protective sheet 8, the correlation between the humidity close to the desired condition and the optimum peeling speed is obtained from the above database and stored in the control circuit 14 in advance.

  Note that the above correlation needs to be obtained again from the database and stored in the control circuit 14 each time the conditions are different.

  The control circuit 14 obtains a peeling speed corresponding to the humidity input to the control circuit 14 based on the correlation between the humidity stored in the control circuit 14 and the optimum peeling speed as described above, and further peels off. Since the moving speed of the part 4 is twice the peeling speed, the moving speed of the peeling part 4 is calculated by doubling the calculated peeling speed value.

  And in order to adjust operation | movement of the peeling part drive system 13 based on the moving speed of the peeling part 4 calculated as mentioned above, the moving speed of the peeling part 4 is determined.

  Sampling for temperature and humidity detection by the temperature / humidity detector 16 is preferably performed every second.

  It is preferable to calculate the moving speed of the peeling unit 4 every time temperature and humidity are detected. Moreover, you may calculate based on the average value of the detected value for 3 times.

  By controlling the moving speed of the moving unit 4 as described above, an increase in surface potential on the surface of the liquid crystal panel 2 can be reliably prevented. Furthermore, the peeling speed can be increased as much as possible within the allowable range of the charged voltage, and the peeling time can be shortened.

  In the method for calculating the moving speed of the peeling portion 4 described above, the moving speed of the peeling portion 4 is calculated based on the correlation between the humidity stored in advance in the control circuit 14 and the optimum peeling speed. However, the present invention is not particularly limited to this, and the correlation between the humidity and the optimum peeling speed may be obtained while peeling off the protective sheet 8, and the moving speed of the peeling portion 4 may be calculated based on the result.

  Further, the temperature of the surface of the table 5 on the side where the liquid crystal panel 2 is installed, which is measured by the table thermometer 18, is input to the control circuit 14.

  Based on the input temperature, the control circuit 14 adjusts the amount of electricity flowing from the power supply circuit 22 to the heating element 19 so that the temperature of the surface on which the protective sheet 8 of the liquid crystal panel 2 is attached is 25 ° C. .

  Further, the control circuit 14 uses a heater for heating a peeling atmosphere (not shown) to determine the temperature around the surface of the liquid crystal panel 2 on which the protective sheet 8 is attached based on the temperature measured by the temperature hygrometer 15. You may control to keep at 25 degreeC.

  If the humidity is the same, the higher the temperature, the greater the amount of saturated water vapor, and the greater the amount of water present in the air, so the charged voltage decreases. Therefore, it is preferable that the temperature of the surface of the liquid crystal panel 2 on which the protective sheet 8 is attached and the temperature around it are higher. Furthermore, since the temperature is lowered by the heat of vaporization of the mist, it is preferable to control the temperature so as to be kept at 25 ° C.

  Next, operation | movement of the protection sheet peeling apparatus 1 in the 1st Embodiment of this invention is demonstrated using FIG. 5A is a schematic view showing a state before the start of peeling of the protective sheet 8, FIG. 5B is a schematic view showing a state at the start of peeling of the protective sheet 8, and FIG. 5C is a protective sheet. FIG. 5D is a schematic diagram illustrating a state after the peeling of the protective sheet 8 is completed.

  As shown in FIG. 5A, the protective sheet peeling apparatus 1 is provided with a liquid crystal panel 2 on a table 5.

  When starting to peel off the protective sheet 8 attached to the liquid crystal panel 2, first, one end of the protective sheet 8 of the polarizing plate 7 on the surface of the liquid crystal panel 2 is sandwiched and fixed by the protective sheet sandwiching part 6 of the peeling part 4. Is done.

  Then, the mist is blown out from the mist blowing nozzle 9 toward the surface where the protective sheet 8 of the liquid crystal panel 2 is attached, and the periphery of the surface where the protective sheet 8 of the liquid crystal panel 2 is attached by the mist suction nozzle 10 Mist is sucked.

  Next, the temperature and humidity detection unit 16 detects the temperature and humidity around the surface of the liquid crystal panel 2 on which the protective sheet 8 is affixed, and the detected temperature and humidity are measured by the temperature hygrometer 15.

  The measured temperature and humidity are input to the control circuit 14, and the control circuit 14 controls the mist blowing amount from the mist blowing nozzle 9 and the mist suction amount by the mist suction nozzle 10 based on the input humidity, and the liquid crystal panel Control is performed so that the humidity around the surface on which the protective sheet 8 of 2 is adhered is kept at 60% to 95%.

  Further, the table temperature detector 17 detects the temperature of the surface of the table 5 on which the liquid crystal panel 2 is installed, and the detected temperature is measured by the table thermometer 18.

  The measured temperature is input to the control circuit 14, and the control circuit 14 supplies power so that the temperature of the surface on which the protective sheet 8 of the liquid crystal panel 2 is attached is 25 ° C. based on the input temperature. The amount of electricity flowing from the circuit 22 to the heating element 19 is adjusted.

  The temperature and humidity detection by the temperature / humidity detection unit 16 and the measurement by the temperature hygrometer 15, the temperature detection by the table temperature detection unit 17 and the measurement by the table thermometer 18, and the temperature and humidity control by the control circuit 14 are as follows: The process is continued until the peeling of the protective sheet 8 is completed.

  Next, as shown in FIG. 5B, the peeling portion 4 is on the rail 3 in the direction of arrow A, that is, on the side opposite to one end of the protective sheet 8 fixed by the protective sheet holding portion 6 of the liquid crystal panel 2. When it starts to move toward one end, peeling of the protective sheet 8 is started.

  With the start of peeling, the control circuit 14 calculates and obtains the optimum moving speed of the peeling portion 4 corresponding to the input humidity based on the correlation between the humidity stored in advance and the optimum peeling speed. In order to adjust the operation of the peeling unit drive system 13 based on the calculation result, the moving speed of the peeling unit 4 is determined.

  And as shown in FIG.5 (c), the temperature of the surface where the protective sheet 8 of the liquid crystal panel 2 is affixed by the control circuit 14 and the peeling part drive system 13, the humidity around it, and the moving speed of the peeling part 4 Is controlled, and the peeling part 4 moves until all the protective sheets 8 are peeled from the liquid crystal panel 2.

  When the peeling is completed, the protective sheet 8 is completely peeled off from the polarizing plate 7 as shown in FIG. 5D, and the protective sheet 8 is discharged from the apparatus by removing the fixing of the protective sheet holding part 6 of the peeling part 4. it can.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
FIG. 6 is a schematic view of the protective sheet peeling apparatus 31 in the second embodiment of the present invention.
In the protective sheet peeling apparatus 31 in the second embodiment of the present invention, the same components as those in the protective sheet peeling apparatus 1 in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 6, in the protective sheet peeling device 31, a portion different from the protective sheet peeling device 1 is an installation portion of the mist blowing nozzle 9 and the mist suction nozzle 10, and the mist blowing nozzle 9 and the mist suction nozzle 10 are liquid crystal. It fixes so that it may mutually oppose to the nozzle stand 32 so that it may be provided in the periphery of the surface where the protection sheet 8 of the panel 2 is affixed.

  The nozzle base 32 is fixed to the rail 3 for moving the nozzle base 32 and is connected to a nozzle base driving system 33 that controls the moving speed of the nozzle base 32, and the nozzle base driving system 33 is connected to the control circuit 14. Has been.

  The control circuit 14 calculates a peeling speed corresponding to the humidity input to the control circuit 14 based on the correlation between the humidity stored in the control circuit 14 and the optimum peeling speed.

  The moving speed of the nozzle base 32 is the same as the peeling speed, and the moving direction is the same direction as the peeling of the protective sheet 8. Further, the peeling speed is one half of the moving speed of the peeling portion 4.

  Then, the control circuit 14 determines the moving speed of the nozzle base 32 in order to adjust the operation of the nozzle base driving system 33 based on the peeling speed calculated as described above.

  As the nozzle base 32 moves on the rail 3 along with the peeling of the protective sheet 8 and moves in the same direction as the peeling of the protective sheet 8 at the same speed as the peeling speed of the protective sheet 8, the humidity near the peeling boundary is always mist blowing nozzle 9 and the mist suction nozzle 10 can be controlled, so that the humidity can be kept high while reliably preventing dew condensation in the vicinity of the separation boundary, and the charged voltage in the vicinity of the separation boundary can be kept low.

  In the second embodiment, the temperature / humidity detection unit 16 is fixed in the same manner as in the first embodiment. However, the temperature / humidity detection unit 16 is not particularly limited thereto. The structure which moves to the same direction as peeling of the protection sheet 8 at the same speed may be sufficient.

  Next, operation | movement of the protection sheet peeling apparatus 31 in the 2nd Embodiment of this invention is demonstrated using FIG. 7A is a schematic diagram showing a state before the start of peeling of the protective sheet 8, FIG. 7B is a schematic diagram showing a state at the start of peeling of the protective sheet 8, and FIG. FIG. 7D is a schematic diagram showing a state after the peeling of the protective sheet 8 is completed.

  As shown in FIG. 7A, the liquid crystal panel 2 is installed on the table 5 in the protective sheet peeling device 31.

  When starting to peel off the protective sheet 8 attached to the liquid crystal panel 2, first, one end of the protective sheet 8 of the polarizing plate 7 on the surface of the liquid crystal panel 2 is sandwiched and fixed by the protective sheet sandwiching part 6 of the peeling part 4. Is done.

  Then, the mist is blown out from the mist blowing nozzle 9 toward the portion of the liquid crystal panel 2 where the peeling of the protective sheet 8 is started, and the portion of the liquid crystal panel 2 from which the peeling of the protective sheet 8 is started by the mist suction nozzle 10 The mist around is sucked.

  Next, the temperature and humidity detection unit 16 detects the temperature and humidity around the surface of the liquid crystal panel 2 on which the protective sheet 8 is affixed, and the detected temperature and humidity are measured by the temperature hygrometer 15.

  The measured temperature and humidity are input to the control circuit 14, and the control circuit 14 controls the mist blowing amount from the mist blowing nozzle 9 and the mist suction amount by the suction nozzle 10 based on the input humidity, and the liquid crystal panel 2. The humidity around the portion where the peeling of the protective sheet 8 is started is controlled to be kept at 60% to 95%.

  Further, the table temperature detector 17 detects the temperature of the surface of the table 5 on which the liquid crystal panel 2 is installed, and the detected temperature is measured by the table thermometer 18.

  The measured temperature is input to the control circuit 14, and the control circuit 14 supplies power so that the temperature of the surface on which the protective sheet 8 of the liquid crystal panel 2 is attached is 25 ° C. based on the input temperature. The amount of electricity flowing from the circuit 22 to the heating element 19 is adjusted.

  The temperature and humidity detection by the temperature / humidity detection unit 16 and the measurement by the temperature hygrometer 15, the temperature detection by the table temperature detection unit 17 and the measurement by the table thermometer 18, and the temperature and humidity control by the control circuit 14 are as follows: The process is continued until the peeling of the protective sheet 8 is completed.

  Next, as shown in FIG. 7B, the peeling portion 4 is on the rail 3 in the direction of arrow A, that is, on the side opposite to one end of the protective sheet 8 fixed by the protective sheet sandwiching portion 6 of the liquid crystal panel 2. When it starts to move toward one end, peeling of the protective sheet 8 is started.

  With the start of peeling, the control circuit 14 calculates and obtains the optimum moving speed of the peeling portion 4 corresponding to the input humidity based on the correlation between the humidity stored in advance and the optimum peeling speed. In order to adjust the operation of the peeling unit drive system 13 based on the calculation result, the moving speed of the peeling unit 4 is determined.

  The nozzle base 32 moves on the rail 3 in the direction of arrow A along with the peeling of the protective sheet 8, and accordingly, the mist blowing nozzle 9 and the mist suction nozzle 10 also move to control the humidity near the peeling boundary. .

  The control circuit 14 calculates the optimum moving speed of the nozzle base 32 corresponding to the input humidity based on the correlation between the humidity stored in advance and the optimum peeling speed, and based on the obtained calculation result. In order to adjust the operation of the nozzle table drive system 33, the moving speed of the nozzle table 32 is determined.

  And as shown in FIG.7 (c), the temperature of the surface where the protective sheet 8 of the liquid crystal panel 2 is affixed by the control circuit 14, the peeling part drive system 13, and the nozzle stand drive system 33, the peeling boundary part vicinity While the humidity, the moving speed of the peeling portion 4 and the nozzle base 32 are controlled, the peeling portion 4 moves until all of the protective sheet 8 is peeled from the polarizing plate 7.

  When the peeling is completed, as shown in FIG. 7D, the protective sheet 8 is completely peeled off from the polarizing plate 7, and the protective sheet 8 is discharged from the apparatus by removing the fixing of the protective sheet holding part 6 of the peeling part 4 it can.

(Third embodiment)
Next, a third embodiment of the present invention will be described.
FIG. 8 is a schematic view of a protective sheet peeling apparatus 41 according to the third embodiment of the present invention.
In the protective sheet peeling apparatus 41 in the third embodiment of the present invention, the same components as those in the protective sheet peeling apparatuses 1 and 31 in the first and second embodiments are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIG. 8, in the protective sheet peeling device 41, a configuration different from the protective sheet peeling devices 1 and 31 is a portion where a surface potential meter 42 is installed. The surface electrometer 42 has a surface on the side opposite to the surface on which the protective sheet 8 of the liquid crystal panel 2 is peeled off so that the distance in the height direction from the liquid crystal panel 2 to the surface electrometer 42 is constant. It is fixed at the center and connected to the control circuit 14.

  By disposing the surface potential meter 42 as described above, the surface potential of the polarizing plate 7 can be easily detected without interfering with the protective sheet 8 to be peeled off. Further, the surface potential of the polarizing plate 7 can be detected more quantitatively by using the surface potential meter 42 as the surface potential detecting means.

  The probe of the surface potentiometer 42 is located at the center of the surface opposite to the surface of the liquid crystal panel 2 from which the protective sheet 8 is peeled, and is not in contact with the liquid crystal panel 2 and is a predetermined distance away. is seperated. The distance between the liquid crystal panel 2 and the probe of the surface electrometer 42 depends on the measuring device, and may be any distance suitable for each measuring device.

  In the configuration of the protective sheet peeling apparatus 41 of the present invention, the surface electrometer 42 is fixed to the center of the surface on the side opposite to the surface on the side where the peeling boundary portion of the liquid crystal panel 2 is present when the protective sheet 8 is peeled off. Therefore, the actual surface potential at the peeling boundary cannot be detected.

  Therefore, a surface potential meter is used to detect the surface potential of the separation boundary portion and the surface potential of the portion where the surface potential meter 42 is disposed, and the correlation between the surface potentials is obtained in advance, and the control circuit 14 Remember.

  It is to be noted that the above correlation needs to be recalculated each time the peeling conditions are different and stored in the control circuit 14.

  In the control circuit 14, based on the correlation of the surface potential stored in the control circuit 14 as described above, the detected value of the surface potentiometer 42 is converted into the value of the surface potential at the separation boundary, and the converted value is The mist blowing amount from the mist blowing nozzle 9 and the mist suction amount by the mist suction nozzle 10 are controlled so as not to exceed an allowable voltage, for example, 2000 V, that is, the value of the allowable voltage is larger than the converted value, and further, the peeling unit is driven. In order to adjust the operation of the system 13, the moving speed of the peeling portion 4 is determined.

  As described above, the surface potential is detected by detecting the surface potential of the separation boundary based on the correlation between the surface potential of the separation boundary and the surface potential of the portion where the surface potential meter 42 is disposed. Even if the total 42 is disposed on the surface opposite to the surface on which the protective sheet 8 of the liquid crystal panel 2 is peeled, the surface potential of the peeling boundary portion can be detected.

  In the above control method, the mist blowing amount from the mist blowing nozzle 9, the mist suction amount by the mist suction nozzle 10, and the moving speed of the peeling portion 4 are controlled so that the converted value does not exceed the allowable voltage. However, for example, it may be controlled to approach a predetermined surface potential value obtained in advance.

  The predetermined surface potential value is not particularly limited because it varies depending on the peeling conditions, but is preferably 1000 V or less, and more preferably 500 V or less.

  Note that the sampling time for detecting the surface potential by the surface potential meter 42 is preferably 100 msec or less, and more preferably 10 msec or less.

  The control based on the detection value of the surface electrometer 42 may be performed at intervals such that the surface potential value does not exceed the allowable voltage, but is preferably performed every time it is detected 10 to 30 times, for example. Moreover, you may control based on the average value of the detected value for 5 times-10 times.

  The polarizing plate 7 is controlled by controlling the mist blowing amount from the mist blowing means, the mist suction amount by the mist suction means, and the moving speed of the moving portion based on the surface potential detected by the surface potential meter 42 as described above. The potential increase on the surface can be prevented more reliably. Furthermore, as compared with the case of only control based on humidity, the peeling speed can be increased as much as possible within the allowable range of the charged voltage, and the peeling time can be further shortened.

  In the control method described above, the mist blowing amount from the mist blowing nozzle 9, the mist suction amount by the mist suction nozzle 10, and the peeling portion are based on the correlation between the surface potentials stored in the control circuit 14 in advance. However, the present invention is not limited to this, and the correlation between the surface potentials may be obtained while the protective sheet 8 is peeled off, and the control may be performed based on the result.

  In the third embodiment, the surface potential meter 42 is fixed. However, the surface potential meter 42 is not particularly limited to this. For example, by fixing the surface potential meter 42 to a rail or the like, the protective sheet 8 is peeled off. The surface potential may be measured while moving the surface potential meter 42 in the same direction as the peeling of the protective sheet 8 at the same speed as the peeling speed of the protective sheet 8.

  Next, operation | movement of the protection sheet peeling apparatus 41 in the 3rd Embodiment of this invention is demonstrated using FIG. FIG. 9A is a schematic diagram showing a state before the start of peeling of the protective sheet 8, FIG. 9B is a schematic diagram showing a state at the start of peeling of the protective sheet 8, and FIG. 9C is a protective sheet. FIG. 9D is a schematic diagram illustrating a state after the peeling of the protective sheet 8 is completed.

  As shown in FIG. 9A, the liquid crystal panel 2 is installed on the table 5 in the protective sheet peeling device 41.

  When starting to peel off the protective sheet 8 attached to the liquid crystal panel 2, first, one end of the protective sheet 8 of the polarizing plate 7 on the surface of the liquid crystal panel 2 is sandwiched and fixed by the protective sheet sandwiching part 6 of the peeling part 4. Is done.

  Then, the mist is blown out from the mist blowing nozzle 9 toward the surface where the protective sheet 8 of the liquid crystal panel 2 is attached, and the periphery of the surface where the protective sheet 8 of the liquid crystal panel 2 is attached by the mist suction nozzle 10 Mist is sucked.

  Next, the temperature and humidity detection unit 16 detects the temperature and humidity around the surface of the liquid crystal panel 2 on which the protective sheet 8 is affixed, and the detected temperature and humidity are measured by the temperature hygrometer 15.

  The measured temperature and humidity are input to the control circuit 14, and the control circuit 14 controls the mist blowing amount from the mist blowing nozzle 9 and the mist suction amount by the mist suction nozzle 10 based on the input humidity, and the liquid crystal panel Control is performed so that the humidity around the surface on which the protective sheet 8 of 2 is adhered is kept at 60% to 95%.

  Further, the table temperature detector 17 detects the temperature of the surface of the table 5 on which the liquid crystal panel 2 is installed, and the detected temperature is measured by the table thermometer 18.

  The measured temperature is input to the control circuit 14, and the control circuit 14 supplies power so that the temperature of the surface on which the protective sheet 8 of the liquid crystal panel 2 is attached is 25 ° C. based on the input temperature. The amount of electricity flowing from the circuit 22 to the heating element 19 is adjusted.

  The temperature and humidity detection by the temperature and humidity detection unit 16 and the measurement by the temperature hygrometer 15, the temperature detection by the table temperature detection unit 17 and the measurement by the table thermometer 18, and the temperature control by the control circuit 14 are performed by a protective sheet. Continue until 8 stripping is complete.

  Next, as shown in FIG. 9B, the peeling portion 4 is on the rail 3 in the direction of arrow A, that is, on the side opposite to one end of the protective sheet 8 fixed by the protective sheet sandwiching portion 6 of the liquid crystal panel 2. When it starts to move toward one end, peeling of the protective sheet 8 is started, and the surface potential meter 42 starts to detect the surface potential at the peeling boundary.

  When the peeling starts, the measured humidity and the detected surface potential are input to the control circuit 14, and the control circuit 14 determines the optimum of the peeling unit 4 based on at least one of the input information. The moving speed is calculated, and the moving speed of the peeling unit 4 is determined in order to adjust the operation of the peeling unit drive system 13 based on the obtained calculation result.

  Further, the control circuit 14 calculates and obtains the optimum mist blowing amount from the mist blowing nozzle 9 and the mist suction amount by the suction nozzle 10 based on at least one of the input information as described above. Based on the calculated result, the humidity around the surface of the liquid crystal panel 2 to which the protective sheet 8 is attached is controlled.

  And as shown in FIG.9 (c), the temperature of the surface where the protective sheet 8 of the liquid crystal panel 2 is affixed by the control circuit 14 and the peeling part drive system 13, the humidity around it, and the moving speed of the peeling part 4 Is controlled, and the peeling part 4 moves until all the protective sheets 8 are peeled from the liquid crystal panel 2.

  When the peeling is completed, as shown in FIG. 9D, the protective sheet 8 is completely peeled off from the polarizing plate 7, and the protective sheet 8 is discharged from the apparatus by removing the fixing of the protective sheet holding part 6 of the peeling part 4. it can.

  In addition, although the liquid crystal panel 2 in the said 1st-3rd embodiment is a rectangle, the shape of the liquid crystal panel which the protective sheet peeling apparatus of this invention makes object is not specifically limited to a rectangle.

  Moreover, although the peeling part 4 and the nozzle stand 32 have moved to the longitudinal direction of the liquid crystal panel 2, the moving direction is not limited to this, For example, you may move to the diagonal direction of the liquid crystal panel 2.

  Moreover, the peeling part 4 is not specifically limited to the structure shown to the said 1st-3rd embodiment, For example, the adhesive force larger than the adhesive force of the polarizing plate 7 and the protective sheet 8 is provided on the surface. You may use the rotating roller etc. which have.

  When a rotating roller is used, the rotating roller is disposed above the liquid crystal panel 2 so that the surface of the liquid crystal panel 2 and the rotation axis are parallel to each other, and further, the lower end of the rotating roller is in contact with the surface of the liquid crystal panel 2. Elevating devices such as air cylinders and electric motor cylinders that can be lowered are installed.

  And it fixes so that it may support both with a linear guide stage, a rail, etc., and a rotation roller can be moved to one direction parallel to the surface of the liquid crystal panel 2. FIG.

  The protective sheet 8 can be stably peeled from the polarizing plate 7 by winding the protective sheet 8 while the rotating roller having the above configuration moves.

  As described above, the protective sheet peeling apparatus 1, 31, 41 of the present invention includes the temperature / humidity detection unit 16 that detects the temperature and humidity around the surface of the liquid crystal panel 2 on which the protective sheet 8 is attached, and A temperature / humidity meter 15, a mist blowing nozzle 9 for generating mist and blowing the mist toward the surface on which the protective sheet 8 of the liquid crystal panel 2 is attached, and a protective sheet 8 of the liquid crystal panel 2 are attached. A mist suction nozzle 10 that sucks mist around the surface, a peeling portion 4 that peels the protective sheet 8 from the polarizing plate 7, a rail 3 that is fixed to the peeling portion 4 and moves the peeling portion 4, and detection The control circuit 14 is configured to control the mist blowing amount from the mist blowing nozzle 9, the mist suction amount by the mist suction nozzle 10, and the moving speed of the moving unit 4 based on the humidity that has been generated. Therefore, it is possible to control the mist blowing amount and the mist suction amount based on the detected humidity, so that the humidity around the surface on which the protective sheet 8 of the liquid crystal panel 2 is attached can be kept high while preventing condensation. The charged voltage on the surface of the polarizing plate 7 can be kept low.

  Therefore, when peeling off the protective sheet 8 from the polarizing plate 7, it is possible to maintain a stable surface potential that is not affected by the peeling environment such as temperature and humidity without performing a treatment on the surface of the liquid crystal panel 2.

  Moreover, since the protective sheet 8 can be peeled from the polarizing plate 7 while controlling the moving speed of the peeling portion 4 based on the detected humidity, an increase in the surface potential on the surface of the polarizing plate 7 can be prevented.

  Therefore, when the protective sheet 8 is peeled from the polarizing plate 7, it is possible to maintain a stable surface potential that is not affected by peeling conditions such as a peeling speed without performing a treatment on the surface of the liquid crystal panel 2.

  Therefore, when the protective sheet 8 is peeled from the polarizing plate 7, it is possible to prevent TFT breakdown, insulating film breakdown and driver IC breakdown.

  In addition, in said 1st-3rd embodiment, although the protective sheet peeling apparatus of this invention made only the liquid crystal panel 2 object, it is not restricted to this, The surface potential produced when peeling the protective sheet 8 The protective sheet peeling apparatus of the present invention can also be used in other panels where the increase in the thickness is a problem.

It is the graph which outlined the change of the surface potential in the peeling boundary part with respect to time from peeling of a protective sheet. It is the schematic of the protection sheet peeling apparatus in the 1st Embodiment of this invention. It is the schematic which shows an example of the fixing method of the end of a protective sheet. It is a graph which shows the relationship between humidity and a charged voltage. It is process drawing explaining operation | movement of the protective sheet peeling apparatus in the 1st Embodiment of this invention. It is the schematic of the protection sheet peeling apparatus in the 2nd Embodiment of this invention. It is process drawing explaining operation | movement of the protective sheet peeling apparatus in the 2nd Embodiment of this invention. It is the schematic of the protective sheet peeling apparatus in the 3rd Embodiment of this invention. It is process drawing explaining operation | movement of the protective sheet peeling apparatus in the 3rd Embodiment of this invention. It is sectional drawing showing the structure of a liquid crystal panel.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 31, 41 Protective sheet peeling apparatus 2 Liquid crystal panel 3 Rail 4 Peeling part 5 Table 6 Protective sheet clamping part 7 Polarizing plate 8 Protective sheet 9 Mist blowing nozzle 10 Mist suction nozzle 11 Mist blowing direction 12 Mist suction direction 13 Peeling part drive System 14 Control circuit 15 Temperature hygrometer 16 Temperature / humidity detector 17 Table temperature detector 18 Table thermometer 19 Heating element 20 Peeling tape 21 Protrusion 22 Feed circuit 32 Nozzle base 33 Nozzle base drive system 42 Surface potential meter 100 Liquid crystal panel 101 , 102 Light transmission substrate 103, 104 Electrode 105 Spacer 106 Liquid crystal material 107, 108 Polarizing plate 110 Color filter 111, 112 Protective film 113 Seal A A Movement direction of the peeling part 4

Claims (11)

A peeling device for peeling a protective sheet attached to protect the panel from the panel,
Detecting means for detecting the humidity around the surface of the panel where the protective sheet is affixed;
Mist generating means for generating mist and blowing the mist toward the surface on which the protective sheet of the panel is attached;
Mist suction means for sucking the mist around the surface to which the protective sheet of the panel is attached;
A peeling portion for peeling the protective sheet from the panel;
A moving part fixed to the peeling part and moving the peeling part;
Control means for controlling a mist blowing amount from the mist blowing means, a mist suction amount by the mist suction means, and a moving speed of the moving unit based on the humidity detected by the detection means. Protective sheet peeling device.   The said control means controls the humidity around the surface where the protective sheet of the said panel is affixed to 60%-95%, The protective sheet peeling apparatus of Claim 1 characterized by the above-mentioned.   The protective sheet peeling apparatus according to claim 1, wherein the control unit controls the moving speed of the moving unit based on a relationship between humidity and an optimum peeling speed.   The said mist blowing means produces | generates the said mist from water, and makes the average particle diameter of the particle | grains of the said mist 5 micrometers or less, The protective sheet peeling apparatus as described in any one of Claims 1-3 characterized by the above-mentioned.   The said mist blowing means produces | generates the said mist by an ultrasonic wave, The protective sheet peeling apparatus as described in any one of Claims 1-4 characterized by the above-mentioned.   The said mist blowing means and the said mist suction means move in the same direction as peeling of the said protective sheet at the same speed as the peeling speed of the said protective sheet with peeling of the said protective sheet. The protective sheet peeling apparatus as described in any one.   A charge detection unit for detecting a surface potential of the panel; and the charge detection unit is disposed on a surface opposite to the surface of the panel from which the protective sheet is peeled, and is based on the detected surface potential. The protective sheet according to any one of claims 1 to 6, wherein the mist blowing amount from the mist blowing means, the mist suction amount by the mist suction means, and the moving speed of the moving part are controlled. Peeling device.   The charge detection unit detects a surface potential of the peeling boundary portion based on a correlation between a surface potential of the peeling boundary portion and a surface potential of a portion where the charge detection portion is disposed. The protective sheet peeling apparatus of Claim 7.   The protective sheet peeling apparatus according to claim 7, wherein the charge detection unit is a surface potential meter.   The said sheet | seat is a liquid crystal panel, The said protective sheet is affixed on the polarizing plate in the surface of a liquid crystal panel, The protective sheet peeling apparatus as described in any one of Claims 1-9 characterized by the above-mentioned.   A peeling method for peeling a protective sheet attached to protect the panel from the panel, wherein the protective sheet is peeled off from the panel while a peeling portion is moved, and a mist is generated. The mist is blown out toward the surface on which the protective sheet is attached, the mist around the surface of the panel on which the protective sheet is attached is sucked, and the protective sheet on the panel is attached. A protective sheet peeling method characterized by detecting the humidity around the surface and controlling the mist blowing amount, the mist suction amount, and the moving speed of the peeling portion based on the detected humidity.

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