Array substrate and color film substrate box alignment method
A color filter substrate and array substrate technology is applied in the field of box alignment between array substrates and color filter substrates. Deviation, the effect of ensuring product quality
Inactive Publication Date: 2013-03-27
BOE TECH GRP CO LTD +1
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Problems solved by technology
[0004] In the manufacturing process of TFT-LCD in the prior art, due to the unavoidable existence of a certain range of box alignment deviation in the box alignment process of the array substrate and the color filter substrate, it affects the quality of TFT-LCD products to a certain extent.
When the deviation of the box alignment exceeds the standard specification, not only the black matrix cannot play a blocking role, but also the color resin will be misaligned, resulting in poor pictures
According to the process conditions of the existing technology, the deviation of the box alignment can only be controlled at about 7um, so in order to prevent the poor black matrix shielding caused by the deviation of the box alignment, the prior art generally adopts the method of appropriately increasing the black matrix shielding area, but this reduces the Aperture ratio per pixel
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[0031] The alignment method of the array substrate and the color filter substrate in a box of the present invention includes:
[0032] Step 1, setting a plurality of reference points, the connection line of the plurality of reference points forms a reference figure in the reference plane;
[0033] Step 2, setting a plurality of detection points on the first substrate, the connecting lines of the plurality of detection points form a first pattern on the first substrate, the shape of the first pattern is consistent with the shape of the reference pattern, The positions of the plurality of detection points in the first graphic correspond one-to-one to the positions of the plurality of reference points in the reference graphic;
[0034] Step 3, setting a plurality of inspection points on the second substrate, the connection lines of the inspection points form a second pattern on the second substrate, the shape of the second pattern is consistent with the shape of the reference pat...
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The invention discloses an array substrate and color film substrate box alignment method. The method comprises the following steps of: 1, setting a plurality of reference points, wherein connecting lines of the reference points form a reference graph in a reference plane; 2, setting a plurality of detection points, wherein connecting lines of the detection points form a first graph on a first substrate; 3, setting a plurality of check points on a second substrate, wherein connecting lines of the check points form a second graph on a second substrate; 4, detecting that whether the first graph on the first substrate is overlapped with the reference graph or not; 5, detecting that whether the vertical projection of the second graph on the second substrate to the reference plane is overlapped with the graph or not; and 6, aligning the box. According to the array substrate and color film substrate box alignment method, the box alignment error in a box alignment process can be eliminated, and the quality of a thin film transistor-liquid crystal display (TFT-LCD) product is guaranteed; and meanwhile, a method for enlarging the shielding area of a black matrix is avoided, the aperture opening ratio of the unit pixels can be increased, and the light leakage phenomenon caused by the alignment error can be avoided.
Description
technical field [0001] The invention relates to a method specially suitable for manufacturing semiconductors, in particular to a method for positioning an array substrate and a color filter substrate in a box. Background technique [0002] Thin Film Transistor Liquid Crystal Display (TFT-LCD for short) has the characteristics of small size, low power consumption, no radiation, and relatively low manufacturing cost, and occupies a dominant position in the current flat panel display device market. [0003] TFT-LCD is formed by combining an array substrate and a color filter substrate (color filter) into a cell and injecting liquid crystal into it. A columnar spacer is usually set between the array substrate and the color filter substrate to maintain the thickness of the cell. [0004] In the manufacturing process of the prior art TFT-LCD, due to the unavoidable existence of a certain range of box alignment deviation in the box alignment process of the array substrate and the c...
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IPC IPC(8): G02F1/1333
Inventor 吴海龙陈维涛
Owner BOE TECH GRP CO LTD