TW200804939A - Method for fabricating liquid crystal display panel - Google Patents

Abstract

A method for fabricating a liquid crystal display panel (LCD panel) comprises following steps. A lower substrate having a display area is provided. A sealant is spread on the lower substrate to substantially surround the display area. Several liquid crystal molecules and photo-sensitive monomers are filled in the display area. An upper substrate is provided. Assembling the upper and lower substrates. Applying a voltage to the upper and lower substrates, and applying ultra-violet light, for curing the sealant and polymerizing the photo-sensitive monomers so as to allow a polymer to be formed on at least one of the upper and lower substrates.

Description

200804939

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of fabricating 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 photosensitive monomers are 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. Conventionally, 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 then an 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 fabricating a liquid crystal panel, which can simultaneously cure a sealant material and polymerize a photosensitive monomer, thereby saving process time and improving the space of the clean room. Utilization rate. According to an object of the present invention, a method for manufacturing a liquid crystal panel is provided, including: providing a substrate having a display area; coating a frame glue on the lower substrate to substantially surround the display area; and injecting a plurality of liquid crystals a molecule and a plurality of photosensitive monomers in the display area; providing an upper substrate; and, the upper substrate and the lower substrate, and applying a voltage to the upper substrate 200804939

- : W3048PA and the lower substrate, and irradiated with a - ultraviolet light source for simultaneously curing the sealant and polymerizing the photosensitive monomers - at least one of the alignment polymer on the upper substrate or the lower substrate. The above-mentioned objects, features, and advantages of the present invention will become more apparent from the aspects of the appended claims. 〜1E图' is a diagram showing the steps of the following steps in accordance with a preferred embodiment of the present invention. First, please refer to FIG. 1A to provide a 3D JL right I substrate 110 having a display 11 1〇5. In detail, the display: the product Chen Pai two, the broken vertical intersecting data line and sweep cat line 'even:: at least - electricity:: transistor (not shown ^ better, lower substrate 110: the first clinic Show another point: surface electrical continuation _^ ^ ιιπ aspect, if you want to form a non-vertical alignment layer (not shown I surface (such as 112 in Figure 1), the process is first coating, second-lower substrate 11G, and then After brushing and grinding the polymer material layer, the n-shaped groove is heated and hardened, so that the liquid crystal molecules can be completely backed by U/: arrangement. If a vertical alignment layer is to be formed on the surface of the lower substrate 110, the vertical direction of the k-cloth is vertical. The aligning layer can be vertically aligned with the liquid crystal after heating and hardening. The month of the month, the 、, the brother 1B, the coating frame glue 12 is placed on the lower plate 11 〇 on the lower plate to surround the display area 105. After that, Please refer to the figure / figure substrate 2 7 200804939

—^^rW3048PA liquid crystal molecules 130 and a plurality of photosensitive cells 140 are in the display area i〇5. An inject nozzle can be used to intensively coat the liquid crystal particles, which accelerates the diffusion of the liquid crystal within the panel. On the other hand, the upper substrate (such as 150 of FIG. 1E) is provided, and if a non-vertical alignment layer (such as 152 of FIG. 1E) is to be formed on the surface of the upper substrate, the process is to first coat the layer of germanium molecular material (not shown). On the upper substrate 150, the polymer material layer is brushed to form a parallel groove which is heat-hardened, so that the liquid crystal molecules can be aligned along the groove. If the vertical alignment layer is to be formed on the surface of the upper substrate 150, if the vertical alignment layer is applied, the liquid crystal can be vertically aligned after being heat-hardened. Thereafter, it is preferable to cut the upper substrate 15 〇 so that the electrical contact 丨〇 2 can be exposed after the substrate 150 and the lower substrate are π-paired after the dicing. Figs. 2A to 2D show the pattern of the substrate Ho on the liquid crystal panel of the embodiment after cutting. For example, in the embodiment, the electrical contacts 102 of the substrate 11 are disposed on the upper and lower sides of the display area 105. Therefore, the upper and lower sides 15 of the upper substrate I50 are cut off during cutting, as shown in FIG. 2A. Show. 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 thereto, as long as there is room for exposing the electrical contacts 1〇2 of the lower substrate 11〇. 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 two sides 15a and 15a, as shown in the second figure. As another example, the upper substrate 150b can also cut a corner 15b or even four corners as shown in Fig. 2C. As another example, 8 of the upper substrate 15〇c is cut off.

-W3048PA 200804939 Region 15c, for example two, as shown in Figure 2D, to expose two electrical contacts 102, respectively. In the 2D drawing, the two inner regions are cut away as an example, but the present invention is not limited thereto, and an inner region or a plurality of inner regions are cut off. Preferably, the action of cutting the upper substrate 150c performs laser cutting to cut the region 15c in the upper substrate 15〇c.

Thereafter, the upper substrate 150 and the lower substrate Π0 are exposed to expose the electrical contacts 102' as shown in Fig. 1D. Finally, a voltage is applied to the upper substrate 150 and the lower substrate no 5 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 1. 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 function of pretilt angle of the liquid crystal molecules 130 or a multi-d (10) ain Vertical Alignment (MVA). Here, the curing process of the sealant material and the polymerization of the second facility (the ultraviolet light exposure device and the high-pressure process ink chamber) can be used to save the process time and improve the process time. The (four) μ# of the t room greatly increases the production capacity of the original production line. Further, the present invention is combined with the curing and polymerization of a single liquid crystal panel in order to integrate the curing and polymerization of a plurality of liquid crystal panels. Since the manufacturing method is similar, the repeated part will not be described again, ^余不&__. Please refer to the 3rd ~ 3β map, which shows the hair 9

TW3048PA 200804939 A schematic diagram of a plurality of liquid crystals in a preferred embodiment of the prior art. The lower substrate 2 i 0 has a plurality of display areas 1 〇 5 force. oc: n 匕柩 1 is applied to the lower substrate 210 or the upper substrate 250 to substantially surround each county inR .. θ , / n 甘 - Each of the display areas 105 has one or several electrical contacts 2 〇 2, a plurality of liquid crystal molecules 130 and a plurality of photosensitive soap bodies; 14 〇 shows F 1π ς. In a jaw not & 105, as shown in Fig. 3, a part of the upper substrate, such as a side, a corner or an inner port p-area, is cut off, so that the upper substrate disk + I, the lower substrate pair can be exposed after the group The electrical contact of the base plate. For example, the electrical contact 202 of the Benbeshi example is distributed between the display areas 1 and Q 5, and the area in the upper base A is removed in this step. 255, for example four, as shown in Figure 3B. In this embodiment, the four internal regions are cut off. However, the present invention is not limited thereto. Alternatively, one internal region may be exposed to four electrical contacts 202 or one internal region may be exposed to four electrical connections. Point 202. It should be noted that, after the upper substrate 250 and the lower substrate 21G are paired, the region 255 of the upper substrate (10) is different from the display of the lower substrate 21, and a plurality of electrical contacts 202 are exposed. Preferably, the action of cutting the upper substrate 25 is performed by performing a laser cutting brake to cut at least one region 255 in the upper substrate 250. Finally, the upper substrate 250 and the lower substrate 210 are cut to form a plurality of liquid crystal panels as shown in Fig. 3C. The method for manufacturing a liquid crystal panel disclosed in the above embodiments, wherein the time-curing sealant material and the polymerizable photosensitive monomer' integrate the steps of using two facilities (ultraviolet light exposure apparatus and clean room) Together, it saves process time and increases the space utilization of the clean room. Among them, more 200804939 ...

— 涵m · [Wj048PA * Integrating the frame curing process of multiple liquid crystal panels with the photosensitive monomer polymerization process can greatly increase the production capacity of the original production line. In the above, the present invention has been disclosed in the above preferred embodiments, but it is not intended to limit the present invention. Those skilled in the art can make various changes and modifications 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. 11

rW3048PA 200804939 [Description of main component symbols] 102: Electrical contact 105: Display area 110: Lower substrate 112: Vertical alignment layer 120, 122: Sealant 130: Liquid crystal molecules 140: Photosensitive cells 10 150, 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)

200804939 —* iW3048PA ' X. Patent application scope: 1. A method for manufacturing a liquid crystal panel, comprising: providing a substrate having a display area; coating a frame glue on the lower substrate to substantially surround the display area Injecting a plurality of liquid crystal molecules and a plurality of photosensitive monomers in the display area; providing an upper substrate; applying a voltage to the upper substrate and the lower substrate; and applying a voltage to the upper substrate and the lower substrate, and Irradiating with an ultraviolet light source to simultaneously cure the sealant and polymerizing the photosensitive monomers into at least one of the upper substrate or the lower substrate. 2. The method of claim 1, wherein the lower substrate has an electrical contact, the method further comprising: cutting the upper substrate to expose the electrical contact; wherein the voltage system Applied to the electrical contact. 3. The method of claim 1, further comprising: coating a polymer material layer on the lower substrate; and brushing the polymer material layer. 4. The method of claim 1, further comprising: coating a polymer material layer on the upper substrate; and brushing the polymer material layer. The method of claim 1, wherein the lower substrate has a plurality of the display regions 5, the method further comprising: cutting the upper substrate and the lower substrate to form a first substrate ir/rnmjy A plurality of liquid crystal panels. 6. The method of claim 2, wherein the step of cutting the upper substrate is to cut a corner of the upper substrate. 7. The method of claim 2, wherein the step of cutting the upper substrate is to cut one side of the upper substrate. 8. The method of claim 2, wherein the step of cutting the upper substrate is to cut a region of the upper substrate, and after the upper substrate and the lower substrate are paired, the region of the upper substrate is The display area of the lower substrate is staggered. 9. The method of claim 8, wherein the step of cutting comprises performing a laser cut to cut one of the regions in the upper substrate. 10. The method of claim 2, wherein the step of cutting the upper substrate is to cut an inner region of the upper substrate. 11. The method of claim 2, wherein the step of cutting the upper substrate is to cut a plurality of inner regions of the upper substrate. 14