TWI514035B - Liquid crystal display panel and manufacturing method of the same - Google Patents

Description

Liquid crystal display panel and method of manufacturing same

The present invention relates to a liquid crystal display panel and a method of fabricating the same, and more particularly to a liquid crystal display panel having an adhesive disposed on a substrate and located on a side of the substrate, and a method of fabricating the same.

In the process of the liquid crystal display panel, one of the steps is a cutting process. However, residual materials are generated in the cutting process. When the support of the machine for the residual material is insufficient, the residual material will be separated and detached in advance, which may cause abnormality of the machine. Therefore, the relevant industry is dedicated to research to further improve the process of the liquid crystal display panel.

The invention relates to a liquid crystal display panel and a manufacturing method thereof. The adhesive material can be temporarily adhered to the edge of the liquid crystal display panel by adhesive without setting adhesive on the predetermined cutting path of the substrate, without being adhered to the edge of the liquid crystal display panel by the adhesive. It is too early to separate from the machine and cause abnormality of the machine.

According to an aspect of the invention, a liquid crystal display panel is proposed. The liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, a sealant layer, and an adhesive. The liquid crystal layer is disposed between the first substrate and the second substrate. The sealant layer bonds the first substrate and the second substrate. The adhesive is disposed on the first substrate and on one of the first sides of the first substrate.

According to another aspect of the present invention, a method of manufacturing a liquid crystal display panel is proposed. The manufacturing method of the liquid crystal display panel includes the following steps: providing a first mother substrate and a second mother substrate; a plurality of liquid crystal layers are disposed on the first mother substrate; a plurality of sealant layers are formed on the first mother substrate, and each of the sealant layers surrounds the respective liquid crystal layers; And a first mother substrate and a second mother substrate; and a first mother substrate and a second mother substrate after cutting the pair along a predetermined cutting path;

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

The following embodiments provide a liquid crystal display panel and a manufacturing method thereof. By setting a glue on a predetermined cutting path of the substrate, the residue generated after the cutting can be temporarily adhered to the edge of the liquid crystal display panel by the adhesive, without It is too early to separate from the machine and cause abnormality of the machine. However, the detailed structure of the embodiments is provided for illustrative purposes only and is not intended to limit the scope of the invention. Those having ordinary knowledge may modify or change the steps as needed according to the actual implementation.

1A is a schematic plan view showing a liquid crystal display panel according to an embodiment of the present invention, and FIG. 1B is a schematic cross-sectional view taken along line 1B-1B' of FIG. 1A. Please refer to Figures 1A~1B. The liquid crystal display panel 100 includes a first substrate 110, a second substrate 120, a liquid crystal layer 130, a sealant layer 140, and an adhesive 150. The liquid crystal layer 130 is disposed between the first substrate 110 and the second substrate 120, and the sealant layer 140 bonds the first substrate 110 and the second substrate 120. The adhesive is disposed on the first substrate 110 and located on the first side 110a1 of the first substrate 110.

In one embodiment, as shown in FIGS. 1A-1B, the adhesive 150 is located on the first side 110a1 of the first substrate 110 and protrudes from the first side 110a1. In another embodiment, the adhesive 150 may also be located on the first side 110a1 of the first substrate 110 and recessed toward the inside of the liquid crystal display panel 100 (not shown). In another embodiment, the adhesive 150 may also be located on the first side 110a1 of the first substrate 110 and aligned with the first side 110a1 (not shown).

As shown in FIG. 1A to FIG. 1B , in the embodiment, the sealant layer 140 is formed between the first substrate 110 and the second substrate 120 and surrounds the liquid crystal layer 130 , and the adhesive 150 is disposed on the sealant layer 140 relative to the liquid crystal layer 130 . One side. In other words, the adhesive 150 of the liquid crystal display panel 100 is disposed outside the sealant layer 140.

In the embodiment, the adhesive 150 is made of a viscous material. In one embodiment, the material of the adhesive 150 includes, for example, an insulating material. In another embodiment, the material of the adhesive 150 may include, for example, a conductive material such as gold glue, and the adhesive 150 directly contacts the insulating portion of one of the first substrate 110 and the second substrate 120. For example, the first substrate 110 and the second substrate 120 may respectively include an insulating substrate and a conductive layer (not shown), and the insulating substrate is, for example, a glass substrate. In one embodiment, the adhesive 150 can directly contact the insulating substrate portions of the first substrate 110 and the second substrate 120 at the same time. In another embodiment, the adhesive 150 may directly contact the insulating substrate portion of the first substrate 110 to directly contact the conductive layer portion of the second substrate 120.

In one embodiment, the first substrate 110 may include a thin film transistor (TFT) substrate (not shown), and the second substrate 120 may include a color filter (CF) substrate (not shown in the figure). ). In another embodiment, the first substrate 110 A thin film transistor substrate and a color filter substrate may also be included. According to an embodiment of the present invention, the liquid crystal display panel 100 may be a vertical alignment (VA) panel or an in-plane switching (IPS) panel.

In an embodiment, the first substrate 110 may include a metal trace layer (not shown), and the metal trace layer is, for example, a fan-out wire structure. The metal trace layer is disposed, for example, adjacent to the second side 110a2 of the first substrate 110. In one embodiment, the adhesive 150 is disposed on a side of the first substrate 110 where the metal trace layer is not disposed, such as the first side 110a1 of the first substrate 110, and the side 110a1 is not provided with a metal trace layer. In another embodiment, the metal trace layer is disposed adjacent to the second side 110a2 and the third side 110a3 of the first substrate 110, and the adhesive 150 is disposed on the side of the first substrate 110 where the metal trace layer is not disposed. The edge is, for example, the first side 110a1 and the fourth side 110a4 of the first substrate 110 (not shown). As a result, the adhesive 150 is disposed on the side of the first substrate 110 where the metal wiring layer is not disposed, and the adhesive 150 is less likely to be in contact with the metal trace to cause adverse effects, such as a short circuit.

In one embodiment, as shown in FIGS. 1A to 1B, the shape of the adhesive 150 is, for example, a dot shape.

2 is a schematic plan view showing a liquid crystal display panel according to another embodiment of the present invention. In one embodiment, as shown in FIG. 2, in the liquid crystal display panel 200, the shape of the adhesive 150 is, for example, a strip shape. In another embodiment, the adhesive 150 can also be of other shapes, such as an irregular shape. In practical applications, the shape of the adhesive 150 is also appropriately selected depending on the application, and is not limited to the aforementioned types.

3 is a cross-sectional view showing a liquid crystal display panel according to still another embodiment of the present invention. In an embodiment, as shown in FIG. 3, the liquid crystal display panel 300 further includes a plurality of conductive pastes 160. The conductive adhesive 160 is disposed on the first substrate 100, and the conductive adhesive 160 is electrically connected to the first substrate 110 and the second substrate 120. In the embodiment, the material of the conductive paste 160 is, for example, gold glue. In one embodiment, the material of the conductive adhesive 160 and the material of the adhesive 150 are the same, and the conductive adhesive 160 is electrically connected to the conductive layer of the first substrate 110 and the conductive layer of the second substrate 120 (not shown). The adhesive 150 directly contacts the insulating portion of one of the first substrate 110 and the second substrate 120. The adhesive 150 does not directly contact the conductive layer at least on one side of the first substrate 110 and the second substrate 120. That is, the adhesive 150 is not electrically connected to the first substrate 110 and the second substrate 120.

The following is a method for fabricating a liquid crystal display panel of the embodiments, which are for illustrative purposes only and are not intended to limit the invention. Those having ordinary knowledge may modify or change the steps as needed according to the actual implementation. Please refer to Figures 4A to 4D. 4A to 4D are schematic views showing a method of manufacturing a liquid crystal display panel according to an embodiment of the present invention.

Please refer to Figure 4A. A first mother substrate 110 ′ and a second mother substrate are provided, a plurality of liquid crystal layers 130 are disposed on the first mother substrate 110 ′, and a plurality of sealant layers 140 are formed on the first mother substrate 110 ′. Each liquid crystal layer 130 is surrounded.

Please refer to Figure 4B. The adhesive 150 is disposed on the predetermined cutting path L14 of the first mother substrate 110'. In the embodiment, as shown in FIG. 4B, the first The mother substrate 110' includes, for example, predetermined cutting paths L11 to L14 and L21 to L24, and the adhesive 150 is, for example, disposed on a predetermined cutting path L12 and L14 of a portion thereof, and each of the predetermined cutting paths L12 and L14 is respectively provided, for example. One adhesive 150. In the embodiment, part or all of the predetermined cutting paths L11 to L14 and L21 to L24 may be adjacent to the edge of the liquid crystal display panel which is to be formed, or between a plurality of liquid crystal display panels which are to be formed. It should be noted that the number and arrangement of the predetermined cutting paths in the drawings are merely illustrative and are not intended to limit the scope of the present invention. In actual application, the number and configuration of the predetermined cutting paths are also appropriately selected depending on the application conditions. , not limited to the foregoing.

In an embodiment, the first mother substrate 110' may further include a plurality of first substrates corresponding to the respective sealant layers 140 (refer to FIGS. 1A-1B), and the adhesive 150 directly contacts the first side of the first substrate. . In an embodiment, each of the first substrates further includes a metal trace layer, and each of the metal trace layers is disposed adjacent to the second side of each of the first substrates. In an embodiment, the adhesive 150 is disposed on a side of the first substrate where the metal trace layer is not disposed (eg, not disposed on the second side), so that the adhesive 150 is less likely to be in contact with the metal trace to cause a defect. Impact, such as a line short circuit.

As shown in FIG. 4B, in the embodiment, a plurality of conductive pastes 160 may be formed on the first substrate. In an embodiment, the conductive paste 160 is completely on the first substrate and does not protrude from the side of the first substrate. In an embodiment, the second mother substrate further includes a plurality of second substrates corresponding to the respective first substrates, and the conductive paste 160 is used to electrically connect the first substrates and the corresponding second substrates (refer to FIG. 3). In one embodiment, the steps of forming the conductive paste 160 and providing the adhesive 150 are performed, for example, simultaneously. In one embodiment, the conductive paste 160 is formed. The steps of setting the adhesive 150 are performed simultaneously, and the materials of the conductive adhesive 160 and the adhesive 150 are the same, so that the process can be simplified.

Please refer to Figure 4C. The pair of first mother substrate 110' and second mother substrate 120'.

Please refer to Figure 4D. The first mother substrate 110' and the second mother substrate 120' after the pair are cut along the predetermined cutting paths L11 to L14 and L21 to L24. In the embodiment, as shown in FIG. 4D, the predetermined cutting paths L12 and L14 are adjacent to the edge of the liquid crystal display panel 300 which is to be formed. After the cutting, since the adhesive 150 is located on the cutting path, as shown in FIG. 4D, the residual material 400 can be temporarily adhered to the edge of the liquid crystal display panel 300 by the adhesive 150, without causing the machine to be abnormal due to too early separation. The phenomenon.

In the embodiment, the adhesive 150 is disposed on the predetermined cutting path, and the predetermined cutting path is adjacent to the edge of the liquid crystal display panel which is formed, which can reduce the abnormality of the machine caused by the premature fall of the residual material, and can reduce the cutting after completion of the cutting. Residual material area between liquid crystal display panels reduces manufacturing costs.

Please refer to Figure 4E. Finally, the residual material 400 is removed, and thus, the liquid crystal display panel 300 as shown in Fig. 4E (Fig. 3) is formed.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person 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.

100, 200, 300‧‧‧ LCD panel

110‧‧‧First substrate

110'‧‧‧ first mother substrate

110a1‧‧‧ first side

110a2‧‧‧ second side

110a3‧‧‧ third side

110a4‧‧‧ fourth side

120‧‧‧second substrate

120'‧‧‧Second mother substrate

130‧‧‧Liquid layer

140‧‧‧Blocking layer

150‧‧‧Viscos

160‧‧‧ conductive adhesive

1B-1B’‧‧‧ hatching

400‧‧‧Residual materials

L11~L14, L21~L24‧‧‧ scheduled cutting path

FIG. 1A is a schematic top plan view of a liquid crystal display panel according to an embodiment of the invention.

Fig. 1B is a schematic cross-sectional view taken along line 1B-1B' of Fig. 1A.

2 is a schematic plan view showing a liquid crystal display panel according to another embodiment of the present invention.

3 is a cross-sectional view showing a liquid crystal display panel according to still another embodiment of the present invention.

4A to 4E are schematic views showing a method of manufacturing a liquid crystal display panel according to an embodiment of the present invention.

100‧‧‧LCD panel

110a1‧‧‧ first side

110a2‧‧‧ second side

110a3‧‧‧ third side

110a4‧‧‧ fourth side

120‧‧‧second substrate

150‧‧‧Viscos

1B-1B’‧‧‧ hatching

Claims (10)

A liquid crystal display panel comprising: a first substrate and a second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; a sealant layer bonding the first substrate and the second substrate; And an adhesive is disposed on the first substrate and on a first side of the first substrate, the adhesive being a discontinuous body on the first side. The liquid crystal display panel of claim 1, wherein the adhesive protrudes from the first side of the first substrate. The liquid crystal display panel of claim 1, wherein the adhesive layer is disposed on a side of the sealant layer opposite to the liquid crystal layer. The liquid crystal display panel of claim 1, wherein the shape of the adhesive is a dot shape, a strip shape, or an irregular shape. The liquid crystal display panel of claim 1, wherein the adhesive comprises a conductive material, and the adhesive directly contacts an insulating portion of one of the first substrate and the second substrate. The liquid crystal display panel of claim 1, wherein the sealant layer is formed between the first substrate and the second substrate and surrounds the liquid crystal layer. The liquid crystal display panel of claim 1, wherein the first substrate further comprises a metal wiring layer disposed adjacent to a second side of the first substrate. The liquid crystal display panel of claim 1, further comprising a plurality of conductive pastes electrically connected to the first substrate and the second substrate. A method for manufacturing a liquid crystal display panel, comprising: providing a first mother substrate and a second mother substrate; setting a plurality of liquid crystal layers on the first mother substrate; forming a plurality of sealant layers on the first mother substrate, Each of the sealant layers surrounds each of the liquid crystal layers; an adhesive is disposed on a predetermined cutting path of the first mother substrate, the adhesive is locally distributed on the predetermined cutting path; and the first mother substrate and the pair are disposed a second mother substrate; and the first mother substrate and the second mother substrate after the pair is cut along the predetermined cutting path. The method of manufacturing a liquid crystal display panel according to claim 9, wherein the first mother substrate comprises a plurality of first substrates, and the second mother substrate comprises a plurality of second substrates corresponding to the first substrate, The method further includes: forming a plurality of conductive pastes on the first substrates, the conductive pastes electrically connecting the first substrates and the corresponding first The two substrates, wherein the steps of forming the conductive paste are performed simultaneously with the step of setting the adhesive.