TWI359322B - Method for fabricating liquid crystal display pane - Google Patents

Description

1359322

'Sanda number: TW3048PA; IX. Description of the invention: TECHNICAL FIELD The present invention relates to a method of manufacturing a display device, and more particularly to a method of fabricating a liquid crystal panel. [Prior Art] In recent years, liquid crystal panels have developed an alignment technique: Polymer-Stabilizing Alignment (PSA) technology, in which a photosensitive monomer is mixed into a liquid crystal layer, and after being arranged, ultraviolet light is irradiated. The photosensitive monomer is polymerized into an alignment polymer to guide the alignment of the liquid crystal molecules. • 'Traditionally, when polymerized polymer-assisted alignment technology (PSA) is applied, it is usually performed after the liquid crystal panel is sealed and cut into a single-piece panel, and the alignment process such as photosensitive monomer alignment and polymerization is performed. Then, the sealant material for sealing the liquid crystal panel is cured. SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a method for manufacturing a liquid crystal panel which can simultaneously cure a sealant material and polymerize a photosensitive monomer, thereby saving process time and improving space utilization of the clean room. According to an object of the present invention, a method for fabricating a liquid crystal panel is provided, comprising: providing a lower substrate having a display area; applying a sealant on the lower substrate to substantially surround the display area; and injecting a plurality of liquid crystal molecules And a plurality of photosensitive monomers in the display area; an upper substrate is provided; the upper substrate and the lower substrate are paired; and an electric house is applied to the upper substrate 1353322

Sanda number: TW3048PA and the lower substrate 'and irradiated with - ultraviolet light source for simultaneously curing the sealant and σ the photosensitive monomers are - alignment polymer on the upper substrate or the lower substrate at least one of . ▲ In order to make the above objects, features, and advantages of the present invention more obvious

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A detailed description of the preferred embodiment and the accompanying drawings is as follows: [Embodiment] Referring to Figures 1 to 1, there is shown a liquid crystal panel manufacturer not according to a preferred embodiment of the present invention. (4) Schematic diagram. The method of manufacturing the liquid crystal panel of this embodiment includes the following steps. First, referring to Fig. 8, a lower substrate 110 is provided, and the lower substrate 110 has a display area 1〇5. In detail, the display area 105 has a plurality of data lines and scanning lines which intersect perpendicularly to each other, and even a thin film transistor (not shown) arranged in a matrix. Preferably, the lower substrate 包括 includes at least one electrical contact 1〇2 electrically connected to the data line or the scan line, as shown in FIG. On the other hand, if a non-vertical alignment layer (not shown) is to be formed on the surface of the lower substrate 110 (such as 112 in FIG. 1), the process is to first coat the polymer material layer on the lower substrate 11 and then brush it high. The layers of molecular material form a parallel groove which is hardened by heat, so that the liquid crystal molecules can be arranged neatly along the groove. If the vertical alignment layer is to be formed on the lower substrate 11, the surface is coated with a vertical alignment layer, and the liquid crystal is vertically aligned. Next, referring to FIG. 1 , the sealant 120 is coated on the lower substrate 110 to substantially surround the display region 105 . After that, please refer to the 1C chart, the number of injections.

7 1359322

‘San Miscellaneous: TW3_A . The liquid crystal molecules I30 and the plurality of photosensitive cells 140 are in the display area 1〇5. The injection nozzle can be selectively used to densely coat the liquid crystal particles. Thus, the diffusion of the liquid crystal in the panel can be accelerated. On the other hand, the upper substrate (such as 15A in FIG. 1E) is provided, and if a non-vertical alignment layer (such as 152 in FIG. 1E) is to be formed on the surface of the upper substrate, the process is to first coat the polymer material layer (not drawn). Shown on the upper substrate 15〇, and then brush the polymer material layer to form a parallel groove which is heat-hardened, so that the liquid crystal molecules can be arranged neatly along the groove. If a vertical alignment layer is to be formed on the surface of the upper substrate 150, if a vertical alignment layer is applied, the liquid crystal can be vertically aligned after heat curing. After that, the upper crucible is cut to the upper substrate 150 so that the electrical contact 102 can be exposed after the upper substrate 'plate 50' and the lower substrate 110 are paired. Figs. 2D to 2D are drawings showing the substrate 15 on the upper surface of the liquid crystal panel of the embodiment after being cut. For example, in the embodiment, the electrical contacts 1 〇 2 of the substrate 11 又 are placed on the upper and lower sides of the display area 1 〇 5, so that the upper and lower sides of the substrate I50 are cut off during cutting. 5, as shown in Figure 2. However, it will be apparent to those skilled in the art that the upper substrate 15 of the liquid crystal panel of the present invention is not limited to this as long as it has a space for exposing the electrical contacts 1〇2 of the lower substrate 11A. It will be apparent to those skilled in the art that once the cutting pattern of the upper substrate changes, the position of the electrical contacts of the lower substrate also needs to be changed, and will not be described herein. For example, the upper substrate 15a can also cut off one side 15a' or even the two sides i5a and 15a' as shown in Fig. 2B. As another example, the upper substrate 150b can also cut a corner 15b, or even four corners, as shown in Fig. 2C. Another example is to cut off the upper substrate 8 1359322

, Sanda number: TW3048PA area 15c, for example two, as shown in Figure 2D, to expose two electrical contacts 102, respectively. In the 2D drawing, for example, the two inner regions are cut off. However, the present invention is not limited thereto, and an inner region or a plurality of inner regions may be cut off. Preferably, the action of cutting the upper substrate 150c performs laser cutting to cut the region 15c in the upper substrate 150c.

Thereafter, the upper substrate 150 and the lower substrate 110 are exposed to expose the electrical contacts 10 2 as shown in Fig. 1D. Finally, a voltage is applied to the upper substrate 150 and the lower substrate 110, and is irradiated with the ultraviolet light source 160 to simultaneously cure the sealant 122 and polymerize a plurality of photosensitive monomers (such as 140 in FIG. 1C) as the alignment polymer 142. At least one of the substrate 150 or the lower substrate 110 is as shown in FIG. 1E. For example, a voltage is applied to the electrical contact 102 to create a potential difference between the upper substrate 150 and the lower substrate 110. The vertical alignment layer 152 on the upper substrate 150 and the vertical alignment layer 112 of the lower substrate 110 allow the liquid crystal molecules to be aligned along the trenches neatly. The alignment polymer 142 provides a pretilt angle of the liquid crystal molecules 130 or a function of multi-domain vertical alignment (MVA). In this way, the curing of the sealant material and the polymerization of the photosensitive monomer in the manufacturing process, the two steps using the same facility (ultraviolet light exposure equipment and clean room) can be integrated to save process time and improve dust-free The space utilization rate of the room greatly increases the production capacity of the original production line. Further, in addition to the curing and polymerization process for integrating a single liquid crystal panel, the present invention can also integrate the curing and polymerization processes of a plurality of liquid crystal panels. Since the manufacturing methods are similar, the repeated parts will not be described again, focusing only on the different steps. Please refer to the figure 3A~3B, which shows the hair 1359322

'三达编号·_ TW3048PA. A schematic diagram of a method of fabricating a plurality of liquid crystal panels according to a preferred embodiment of the invention. The lower substrate 210 has a plurality of display areas 1〇5, and the sealant 12〇 is coated on the lower substrate 21〇 or the upper substrate 25〇 to substantially surround each display area 1〇5, and each display area 105 has one or several An electrical contact 2〇2, several liquid crystal molecules! 3 〇 and a plurality of photosensitive cells 140 are in the display area 1 〇 5 as shown in Fig. 3A. Then, a portion of the upper substrate, such as a side, a corner, or an inner region, is cut away, so that the electrical contact of the lower substrate can be exposed after the upper substrate and the lower substrate are paired. For example, the electrical contacts 202 of the present embodiment are distributed between the two display areas 105. Therefore, in this step, the area 255' in the upper substrate 250 is cut off, for example, four, such as the third. The figure shows. This embodiment is exemplified by cutting four internal regions. However, the present invention is not limited thereto, and one internal region may be exposed to four electrical contacts 2〇2 or several internal regions respectively exposing four electric wires. Sexual contact 2〇2. It should be noted that, after the upper substrate 250 and the lower substrate 21 are paired, the region 255 of the upper substrate 25 is offset from the display region 1〇5 of the lower substrate 210, and a plurality of electrical contacts 202 are exposed. Preferably, the action of cutting the upper substrate 25 is performed by laser cutting to cut at least one region 255 in the upper substrate 250. Finally, the upper substrate 250 and the lower substrate 21 are cut to form a plurality of liquid crystal panels as shown in Fig. 3C. In the method for manufacturing a liquid crystal panel disclosed in the above embodiments of the present invention, (4) curing the frame riding and polymerizing the photosensitive monomer, the steps of using the two components (ultraviolet light exposure device and the clean room) are integrated. It can save process time and improve the space utilization of the clean room. Among them, more 1359322

" Sanda number: TW3048PA * The combination of the frame curing process of multiple liquid crystal panels and the photosensitive monomer polymerization process can greatly increase the production capacity of the original production line. In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. It is common in the art to which the invention pertains, and various modifications and refinements can be made without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1A to 1E are schematic views showing a method of fabricating a liquid crystal panel in accordance with a preferred embodiment of the present invention. 2A to 2D are views showing the substrate after cutting on the liquid crystal panel of the present embodiment.

3A to 3C are schematic views showing a method of manufacturing a plurality of liquid crystal panels according to a preferred embodiment of the present invention. π 1359322

• Sanda number: TW3048PA [Description of main component symbols] 102 Electrical contacts 105 Display area 110 Lower substrate 112 Vertical alignment layer 120, 122: Frame glue 130: Liquid crystal molecules 140: Photosensitive monomer

150, 150a, 150b: upper substrate 152: vertical alignment layer 15, 15a, 15a': side 15b: corner 15c: inner region 202: electrical contact 210: lower substrate 250: upper substrate 255: inner region 12

Claims (1)

1359322 -_ . Announcement j ΓΓΤΤ^ __J [100.12.1 4 X. Patent application scope: 1. A method for manufacturing a liquid crystal panel, comprising: providing a substrate having a plurality of display regions and a plurality of electrical properties a contact point, wherein the electrical contacts of the adjacent two display areas in the display area of the same row are located between the adjacent two display areas of the same row; Φ coating a frame glue on the lower substrate Forming a plurality of liquid crystal molecules and a plurality of photosensitive cells in the display regions; providing an upper substrate; performing a laser cutting to cut at least one inner region of the upper substrate; Pairing the upper substrate and the lower substrate, wherein the substrate is exposed to expose the electrical contacts; applying a voltage to the electrical contacts and irradiating with an ultraviolet light source for Simultaneously curing the sealant and polymerizing the photosensitive monomers into at least one of the upper substrate or the lower substrate; and cutting the upper substrate and the lower substrate to form a plurality of liquid crystal panels The method of claim 1, further comprising: coating a polymer material layer on the lower substrate; and brushing the polymer material layer. 3. The method of claim 1, further comprising: coating a polymer material layer on the upper substrate; and brushing the polymer material layer. 4. The method of claim 1, wherein the at least one inner region of the upper substrate is offset from the display regions of the lower substrate after the upper substrate and the lower substrate are grouped. 14