A Method for Improving Dimples on the Surface of Glass Plates Caused by Rapid Thermal Annealing
A technology with a slightly concave surface and a glass plate, applied in the field of liquid crystal display, can solve the problems of slow shrinkage, slow temperature drop of the glass plate, damage to the back of the glass plate, etc., and achieve the effect of reducing the temperature difference
Active Publication Date: 2019-01-22
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology
The temperature of the peripheral glass plate at the hole drops quickly and shrinks quickly, and the temperature of the glass plate at the hole drops slowly and shrinks slowly, which causes the peripheral glass plate at the hole to squeeze the glass plate at the hole, resulting in damage to the back of the glass plate
Method used
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Embodiment Construction
[0030] The present invention will be further described below in conjunction with accompanying drawing.
[0031] Such as figure 1 with figure 2 As shown, it is a schematic diagram of step 1 of the present invention, including a glass plate 1, a ceramic carrier plate 2, a cooling plate 3, an up and down movement mechanism 4, a scroll wheel 5, a scroll wheel fixed frame 6, and a chamber bottom 7. When cooling, the carrier plate Carry the glass plate out of the high-temperature chamber and then transfer it to the top of the cooling plate with the rectangular opening 8 through the rolling wheel;
[0032] Such as image 3 As shown, the up and down mechanism is controlled to move the cooling plate, so that the cooling plate is in contact with the ceramic carrier plate for the first annealing time so that the glass plate drops to the first annealing temperature. The first annealing temperature is lowered, and the temperature is lowered from high temperature to medium temperature (...
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The invention discloses an improving method for micro concave of a glass pane surface caused by rapid thermal annealing. The method comprises the following steps: 1, placing a glass pane in a ceramic bearing plate, transferring the glass pane together with the ceramic bearing plate to the position right above a cooling plate with a plurality of rectangular openings; 2, controlling an upper and lower action mechanism, and moving the cooling plate upwards, thus making the cooling plate contact with the ceramic bearing plate for the first annealing time to lower the temperature of the glass pane to first annealing temperature; 3, controlling the upper and lower action mechanism, and moving the cooling plate downwards to make the cooling plate and the ceramic bearing plate separated; 4, moving the ceramic bearing plate and making the ceramic bearing plate be moved for the first distance relative to original position; 5, controlling the upper and lower action mechanism, and moving the cooling plate upwards to make the cooling plate contact with the ceramic bearing plate for the second annealing time to lower the temperature of the glass pane to second annealing temperature so as to reduce temperature differences of the glass pane in the rapid cooling process, thus avoiding the micron concave caused by excessive temperature differences of the glass pane.
Description
technical field [0001] The present invention belongs to the technical field of liquid crystal display, and in particular relates to a method for improving the surface dimples caused by rapid thermal annealing of a glass plate. Background technique [0002] In the linear rapid thermal annealing (Inline Rapid Thermal Annealing) equipment, the glass plate (Glass) is placed on the carrier tray and conveyed. It is necessary to quickly cool the chamber to quickly cool down the carrier plate to 100-150°C, otherwise the subsequent mechanism components will be damaged due to high temperature. When the carrier plate carries the glass plate and arrives at the rapid cooling unit, the up and down actuating mechanism makes the cooling plate move upwards to attach to the carrier plate. The cooling plate is covered with cooling water (PCW) pipelines, which can make the temperature of the carrying plate drop rapidly. After a certain period of time, the cooling plate drops, and the carrying ...
Claims
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IPC IPC(8): C03B25/08
CPCC03B25/08
Inventor 李世雄
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD