TW594209B - Liquid crystal display cell and repair method for use in liquid crystal display cell manufacturing process - Google Patents

Abstract

Liquid crystal display cells and repair methods for use in a liquid crystal display cell manufacturing process are disclosed. One liquid crystal display cell for use with the present invention includes a liquid crystal layer sandwiched between a pair of substrates, and a novel sealing member for attaching one of the substrates to the other substrate. The sealing member includes a first portion enclosing a display region of the liquid crystal cell and a second portion defining a channel with one end sealed by the first portion of the sealing member and the other end defining an opening. In the repair method, the sealed end of the channel is cut, and then the liquid crystal display cell is pressed to drain excess liquid crystal out of the liquid crystal display cell through the opening of the channel defined by the second portion of the sealing member. At last, the opening of the channel is sealed.

Description

594209 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a liquid crystal display unit (1 iquidcrysta 1 disp 1 ayce 1 1) and a method for repairing the same, and particularly to one drop injection method (one drop fi 1 1) Liquid crystal display unit manufactured by the manufacturing process and its repair method [Prior technology] The liquid crystal display device (liquid crystal display device) generally used will include a backlight module and a liquid crystal display unit (liquid crysta 1 disp 1 ayce 1 1) The birefringence characteristic of the liquid crystal is used to control the penetration of light, thereby displaying various images. As shown in FIG. 1, the liquid crystal display unit 100 includes two substrates 102 and 104 arranged face to face, and a liquid crystal layer 106 is sandwiched between the substrates 102 and 104. In detail, the assembling process of the two substrates includes the following steps. First, referring to FIG. 2, a sealant is coated on the substrate 102 using a syringe coating technology to form a seal 1. 0 8 and leave an opening 10 8 a for liquid crystal injection later. It should be noted that a bump 1 1 0 is provided in the opening 108 a. Then, the pair of substrates are aligned and heat-pressed to complete the crosslinking of the polymer. After the two substrates are assembled, they are cut into individual liquid crystal display units (LCD ce 1 1). The liquid crystal material is injected into the liquid crystal display unit through the opening 108a by vacuum injection (vacuum injection method). The opening was then sealed with resin and cured. It should be noted that referring to FIG. 2 'because the liquid crystal material is injected after the two substrates are assembled', the cured sealant 1 0 8 at the peripheral corners 1 0 8 b usually leaves liquid crystal material 1 1 2 which is difficult to remove. .

00740.ptd Page 7 594209 V. Description of the invention (2) In addition, the conventional technology also uses a drop injection method (ο n e d r ο p f i 1 1 (referred to as 0D F)) to assemble the liquid crystal display unit. The so-called drip injection method includes applying a sealant to at least one of a pair of substrates, and dripping a liquid crystal material on one of the pair of substrates, and then stacking one of the pair of substrates on the other substrate. Up and cure the sealant. Compared with the widely used vacuum injection method in the manufacture of liquid crystal display units, the drop-injection process significantly reduces the manufacturing cost of liquid crystal display units and improves the yield of mass production. The reason is that, first, this method significantly reduces the amount of liquid crystal materials used. And, secondly, this method reduces the time to inject the liquid crystal material. Therefore, there is a strong demand to apply the drip injection method to the manufacturing process of a liquid crystal display unit. According to the drip type injection process, a predetermined amount of liquid crystal material is dripped onto a substrate by a liquid crystal dripper. However, when the liquid crystal material in the liquid crystal display cell is excessive or insufficient due to a change in the cell volume defined between the two substrates, quality problems may occur. When the amount of liquid crystal material in the liquid crystal display unit is insufficient, so-called bubbles (e.g., bubble 1 e) appear in the liquid crystal display unit. When the liquid crystal material in the liquid crystal display unit is excessive, gravity mura (large-scale diurnal defects) occurs. Any liquid crystal display unit with air bubbles or uneven gravity will be considered defective. However, when the industry is currently detecting defects in gravity unevenness, if a defective liquid crystal display unit is found to be defective, it cannot be repaired (r e p a i r). [Summary of the Invention] Therefore, an object of the present invention is to provide a repair method for a liquid crystal display unit manufactured by using a drop-injection method.

00740.ptd Page 8 594209 V. Description of the invention (3) Liquid crystal material is discharged from the liquid crystal display unit, thereby overcoming or at least improving the problems caused by the limitations and disadvantages of the prior art. To achieve the above and other objectives, the present invention provides a liquid crystal display unit having a pair of substrates, a liquid crystal layer sandwiched between the pair of substrates, and a seal for fixing one of the pair of substrates to the other substrate. It should be noted that the seal includes a first portion enclosing a display area of the liquid crystal display unit and a second portion defining a channel (cha η ne 1), and one end of the channel is sealed by the seal The first part is closed and the other end of the channel defines an opening. The repair method provided by the present invention is: first cut the closed end of the channel; then squeeze the liquid crystal display unit to make excess liquid crystal material exit the liquid crystal display unit from the opening of the channel; finally, seal the definition The opening in the channel. The liquid crystal display unit obtained by the above repair method includes a pair of substrates, a liquid crystal layer sandwiched between the pair of substrates, a sealing member disposed between the pair of substrates, and a mouthpiece. It should be noted that the seal includes a first part and a second part. Specifically, the first portion of the seal extends along an edge of a display area of the first substrate and has a first opening; the second portion of the seal defines a channel having one end connected to the first portion of the seal A portion is in communication with the display area via the first opening, and the other end of the channel has a second opening. The sealing member seals the second opening of the sealing member. It should be noted that each of the first part and the second part of the seal has a protrusion defining the first opening, the outer surface of the seal is completely free of the liquid crystal material residue, and the channel is not provided with a bump. 0

00740.ptd Page 9 594209 V. Description of the invention (4) The present invention further provides a liquid crystal display unit, which is characterized in that the sealing member includes a first portion surrounding an display area of the liquid crystal display unit and an The second portion defines the first portion of the at least one chamber immediately adjacent the seal. The repair method provided by the present invention for the liquid crystal display unit is: first cutting the seal so that a predetermined number of chambers communicate with the display area of the liquid crystal display unit; then squeezing the liquid crystal display unit so that the excess liquid crystal material is removed from The display area flows out and flows into a chamber communicating with the display area. The liquid crystal display unit obtained by the above repair method is characterized in that the sealing member includes a first portion extending along an edge of a display area of the first substrate, and a second portion defining at least one cavity adjacent to the first portion and communicating with the first portion. This display area is connected. According to the present invention, the liquid crystal layer can be formed not only by using a low-cost and time-saving drop-injection method when manufacturing the liquid crystal display unit, but also after the assembly of the liquid crystal display unit finds a gravity unevenness defect, and then the liquid crystal display unit can be displayed. Unit repair. [Embodiment] FIGS. 4, 6, 7 and 9 are used to explain a liquid crystal display unit according to an embodiment of the present invention. As shown in FIG. 3, these liquid crystal display units each include a substrate 302, a substrate 304, and a liquid crystal layer 306 sandwiched between the substrates 302 and 304. The liquid crystal layer of the liquid crystal display unit 300 is formed by a drip injection method. Referring to FIG. 3, the substrate 3 0 2 may be a color filter substrate, and a plurality of color filters 3 1 2 (a color filter 3 1 2 is shown in FIG. 3).

00740.ptd Page 10 5942〇9 Description of the invention (represented by 5)), a light-shielding array 3 1 4 between adjacent color filters 3 1 2 and a transparent electrode 316 covering substantially the whole of the substrate 302 surface. The substrate ^ 3 〇4 can be a thin film transistor substrate, which is provided with a plurality of parallel shell material lines (not shown in the figure), a plurality of parallel gate lines (not shown, middle), and a thin film transistor. 3 1 8 is provided near each parent line of the data line and the gate line and the pixel electrode 3 2 0 is provided in each area defined by the interleaved data lines & the gate line corresponding to the color on the substrate 3 02 Filter 3 1 2 Fig. 4 shows a liquid crystal display unit 400 according to an embodiment of the present invention. The liquid crystal display unit 400 has a sealing member 402 disposed between the pair of substrates 3 0 2 and 3 0 4 for one of the pair of substrates. It is fixed on another substrate. The sealing member 402 has a first portion 〇2a encloses a display area 404 of one of the liquid crystal display units 400 and a second portion 402b defines a channel 406. The first part 4 0 2 a of the sealing member is to seal the liquid crystal material of the liquid crystal layer 3 06 in the display area 4 04. One end of the channel 406 defined by the second part 402b of the seal is closed by the first part 402a of the seal and the other end defines an opening. As mentioned earlier, when the liquid crystal display unit is manufactured using the conventional drop-injection method, the amount of liquid crystal material to be distributed needs to be controlled very precisely. When the drop of liquid crystal material is lower than the minimum allowable dispe ns ingqu an tity (hereinafter referred to as "Vm i η π"), the liquid crystal material delivered cannot completely fill the space between the two substrates. Space, a negative pressure may exist between the pair of substrates of the finished product of the liquid crystal display unit. As a result, a cavity may be easily formed in the liquid crystal display.

00740.ptd Page 11 594209 V. Description of the invention (6) In the liquid crystal layer of the finished product without panel. When the infusion of the liquid crystal material exceeds the maximum allowable dispensing quantity (hereinafter referred to as π V ma χ π), a gravity mura (large range) is observed during the final inspection. Pixel defects), wherein the final inspection process is to place the finished product of the liquid crystal display unit in a manner perpendicular to the horizontal plane and heat it. The gravity non-uniformity defect is defined as when the light-emitting area (pixels on the substrate) is different or inconsistent with the neighboring area surrounding the defect, which is also called patterned brightness non-uniformity (BNU). Any LCD unit with air bubbles or uneven gravity will be considered defective. Therefore, one of the characteristics of the traditional drip injection method is that the drip volume of the liquid crystal material must be accurately controlled within a very narrow process allowable range (p r oc e s s window) (defined between Vmin and Vmax). In addition, when the conventional drip-injection method is used to manufacture a large-size liquid crystal display panel, the narrow process allowable range of the conventional drip-injection method further highlights its influence on the process. Therefore, the present invention provides a method for repairing a liquid crystal display unit. When the above liquid crystal display unit 400 is detected to have a problem of uneven gravity (that is, an excessive amount of liquid crystal material in the liquid crystal display unit 400), the liquid crystal display unit 400 The display unit 400 performs a repair method described later. The repair method includes the following steps: First, referring to Fig. 5, cut off the seal at the closed end of the channel 406. According to an embodiment of the present invention, in this step, a laser light having a preset power can be used to make it enter from one of the pair of substrates and reach the place where the seal 402 is to be cut. Generally, the pair of substrates uses a glass

00740.ptd Page 12 594209 V. Description of the invention (Ό The substrate is made. Therefore, the laser light used in this step has a better rate so that the laser light can melt and cut the specific work of the glass substrate. It should be noted that when the cutting step is completed without damaging the seal cut, it will cool to form a circular arc-shaped protrusion. After that, the molten seal 40 2 is in the first part 402a and 3 in the first part. Secondly, it is necessary to cut the junction portion with a circular arc-shaped protrusion 5 0 2. ^ A part of 40 2 b is to prevent the laser light from damaging the circuit board on the pair of substrates in the area corresponding to the sealed end of the channel 4 0 6 Good transmission ~ light parts, the pair of cases (such as busbars) are distributed. Christine does not have a circuit diagram. After cutting the seal at the closed end of the channel 406, the liquid crystal display unit 408 makes The excess liquid crystal material I is discharged from the liquid crystal display unit 4 through the squeezed opening; finally, the channel 4 06 is formed into a mouthpiece 610 to seal the image defined in the channel. Refer to Figure 6, obtained from the above repair method The liquid crystal = three seals 602 include a first portion 6023 and a first portion 602a of the seal 602 of the first j = early element 600. The opening has an opening / 〇4 —, ^^ 〇2b. The second part 60 2b defines a channel 606 with a continuous start and a seal 60 2: points 6 0 2a, and the other end of the channel 606 has an open second to the second-: second is A Seal the opening 608 of the seal. The -portion of the seal 602: fl = 4 / section 6025. The junction has a protrusion 508 defining 1 opening M4. It should be noted that the liquid crystal It is simultaneously distributed in the display area 404 surrounded by the first part 6 0 2a of the = and the channel 606. Referring to FIG. 3, the liquid crystal display unit 300 is provided with a seal 31. The

00740.Ptd Page 13 594209 V. Description of the invention (8) The sealing member 3 1 0 includes an inner surface 3 1 0 a contacting the liquid crystal layer 3 0 6, and the shading array of the color filter substrate is distributed on the sealing member 3 Within the area defined by 1 0 3 3 0 a. In this embodiment, the laser light can be incident on the liquid crystal display unit 3 0 0 by the color filter substrate 3 0 4 and cut the sealing member 3 1 0 without destroying the light shielding array on the color filter substrate. Or color filters. The liquid crystal display unit according to the present invention may include a laminated color filter (COA) and an opposite substrate having a common electrode. The so-called "multi-layer color filter" is formed by forming a light-shielding array and a color filter and a thin film transistor on the same substrate. A liquid crystal display unit according to another embodiment of the present invention may include an in-plane switching mode (IPS mode) thin-film transistor substrate and an opposite substrate. The so-called "coplanar switching mode thin film transistor substrate" is a thin film transistor and a common electrode formed on the same substrate. It should be noted that the liquid crystal display unit of the present invention is different from the aforementioned conventional technique of forming a liquid crystal layer using a vacuum injection method. Referring to FIG. 2, the opening 1 0 8 a of the sealing member 108 forming the liquid crystal layer using the vacuum injection method has a bump 1 1 0, and the liquid crystal material is injected into the liquid crystal from outside the sealing member 108. In the panel, a liquid crystal material 1 1 2 which is difficult to be removed may remain in the periphery of the sealing member 108, especially in a corner 108 b, for example. In contrast, the liquid crystal display unit 600 of the present invention uses a drop-injection method to form its liquid crystal layer. Therefore, no liquid crystal material remains on the outer surface of the sealing member 602, and the channel of the sealing member 602 There are also no bumps in 6 0 6. FIG. 7 shows a liquid crystal display unit according to another embodiment of the present invention.

00740.ptd Page 14 594209

7 0 0. The liquid crystal display single Moo has _ seals m minutes 7 0 2 a surrounding (enc 1 〇se) the liquid crystal g alfal + M; + Shidi ^ Chu Yi Qiu Ba 7n? H χ — Department / /, early The display area 40 4 and a first 4 blade 70 2 b boundary are at least one chamber 7 04 next to the seal.

The first part 7 0 2a. When the liquid crystal display unit 700 is detected to have a gravity X problem (that is, the liquid crystal material in the liquid crystal display unit 400 is too invented, the repair method provided for this liquid crystal display unit 700 is described below. First, Referring to FIG. 8, the sealing member 702 is first cut with, for example, the aforementioned laser light, so that the liquid crystal material located in the display area 400 of the liquid crystal display unit is entered into a predetermined number of chambers 804. Then squeeze the liquid crystal display unit so that excess liquid crystal material flows out of the display area 4 04 and flows into the chamber 804. Generally, the liquid crystal display units manufactured in the same batch should have approximately the same cell capacity (Cel 1 v〇lume), and the amount of liquid crystal drip is the same, so if the batch of liquid crystal display units have uneven gravity, the time can be used to find out the same with the try-and error method. The number of chambers required to accommodate the excess liquid crystal material. Then other liquid crystal cells in the same batch can cut the seal 702 according to the result to obtain the optimal number of chambers to accommodate the excess Referring to FIG. 9, the liquid crystal display unit 900 obtained by the above repair method has a sealing member 802 including a first portion 80 2 a extending along the edge of the display area 404 of the liquid crystal display unit. And a second portion 802b defines at least one cavity 904 next to the first portion 802a and the cavity 804 for containing excess liquid crystal material. The liquid crystal display unit provided by the present invention is 4 0, 6 0 0, 7 0 0 or Yes 9 0 0 can be used in the liquid crystal display element, as shown in Figure 10. The liquid crystal display element

00740.ptd Page 15 594209 V. Description of the invention (10) Piece 1000 includes the liquid crystal display unit 400, 600, 700 or 900, and a backlight device 1002 is provided below the liquid crystal display unit 400, 600, 700 or 900. In order to illuminate the liquid crystal display unit 4 0 0, 6 0 0, 7 0 0 or 9 0 0 and a frame 1 0 0 4 and the backlight device 1 0 0 2 to combine the liquid crystal display unit 4 0 0, 6 0 0, 7 0 0, or 9 0 0 and the backlight module 1 2 0 are combined to form the liquid crystal display device 1 0 0. The liquid crystal display element 1000 further includes two printed circuit boards (PCBs) 1006 and 1008 for transmitting control and driving signals to the liquid crystal display unit 40 through a tape carrier package (TCP) 1010. 0, 6 0 0, 7 0 0, or 9 0 0. The advantage of the present invention is that, when the liquid crystal display unit is assembled using the drip injection method, when the liquid crystal material drip volume is greater than the previously defined Vmax, the aforementioned method of the present invention can repair the liquid crystal display unit and solve the problem of gravity. Both problems. It should be noted that, since the present invention is applicable to a liquid crystal display unit manufactured by using a drip injection method, in the drip injection method, the liquid crystal material dripping step must not use a pure thermosetting seal before sealing the two substrates. Therefore, the sealant used to form the seal and the seal is preferably a sealant containing a radiation-curable adhesive (for example, an ultraviolet-curable adhesive). 2. The method for manufacturing a liquid crystal panel provided by the present invention can not only form a liquid crystal layer by using a low-cost and time-saving drop-injection method, but also, when a liquid crystal display unit that is assembled is found to have a defect of uneven gravity, the excess The liquid crystal material is discharged, thereby repairing the liquid crystal display unit. Although the present invention has been disclosed in the foregoing preferred embodiments, it is not intended to be limited thereto.

00740.ptd Page 16 594209 V. Description of the invention (11) Anyone skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention, so the protection scope of the invention should be Subject to the scope of the attached patent application.

00740.ptd Page 17 594209 Brief description of the drawings [Simplified description of the drawings] In order to make the above and other objects, features, and advantages of the present invention more apparent, the following describes the preferred embodiments of the present invention in conjunction with the accompanying drawings The detailed description is as follows. Fig. 1: Partial cross-sectional view of a conventional liquid crystal display unit; Fig. 2: Top view of a conventional liquid crystal display unit before the opening is sealed, Fig. 3: Partial cross-sectional view of a liquid crystal display unit according to an embodiment of the present invention, Fig. 4 -Figure 6: The above view illustrates the main steps of a method for repairing a liquid crystal display unit according to an embodiment of the present invention; Figures 7-9: The above view illustrates the main steps of a method of repairing a liquid crystal display unit according to another embodiment of the present invention And FIG. 10 are exploded perspective views of a liquid crystal display element according to an embodiment of the present invention. The drawing number says Φ !: 100 liquid crystal display unit 102 base plate 104 base plate 106 liquid crystal layer 108 seals 108a open α 108b seals corner drop 110 bumps 112 residual liquid crystal material 300 liquid crystal display unit

00740.ptd Page 18 594209 Brief description of the drawing 302 Substrate 304 Substrate 306 Liquid crystal layer 310 Seal 312 Color filter 314 Light shielding array 316 Transparent electrode 318 Thin film transistor 320 Pixel electrode 400 Liquid crystal display unit 402 Seal 4 0 2 a Section 40 2b Section 404 Display area 406 Channel 502 Protrusion 600 Liquid crystal display unit 602 Seal 6 0 2 a Section 1 6 0 2b Section 604 first_ first open α 606 channel 608 first open α 610 sealing element 700 LCD display unit 702 seal 7 0 2 a first — part 70 2b second part 704 chamber 802 seal 8 0 2 a first part 8 0 2b second part 804 chamber 900 liquid crystal display unit 904 Chamber 1000 liquid crystal display element 1002 backlight 1004 frame 1006 printed circuit board 1008 printed circuit board 1010 roll With carrier package

00740.ptd Page 19

Claims (1)

6. Scope of Patent Application 1. A repair method for the manufacturing process of a liquid crystal display unit, the method includes the following steps: providing a liquid crystal display unit having a pair of substrates, a liquid crystal layer sandwiched between the pair of substrates, and a seal An element is disposed between the pair of substrates for fixing one of the pair of substrates to the other substrate, wherein the sealing element includes a first portion surrounding (enc 1 ose) a display area of the liquid crystal display unit and a second portion defining A channel, one end of the channel is closed by the first part of the seal and the other end of the channel defines an opening; the closed end of the channel is cut; the liquid crystal is squeezed out early so that the excess liquid crystal material is free from The opening of the channel defined by the second part of the sealing member discharges the liquid crystal display unit; and 'seals the opening of the channel after the excessive liquid crystal material is discharged from the liquid crystal display cell. 2. The method for repairing a liquid crystal display unit process according to item 1 of the scope of the patent application, wherein the pair of substrates includes a thin film transistor substrate and a color filter substrate. 3. The method for repairing a liquid crystal display unit process according to item 1 of the scope of the patent application, wherein the pair of substrates includes a laminated color filter on array (COA) and an opposite substrate having a common electrode . 00740.ptd Page 20 594209 VI. Patent application scope 4. The repair method for the liquid crystal display unit process described in item 1 of the patent application scope, wherein the pair of substrates includes an in-plane switching mode, IPS mode) thin film transistor substrate and an opposite substrate. 5. The method for repairing a liquid crystal display unit process as described in item 1 of the scope of patent application, wherein the step of sealing the opening of the seal comprises applying a sealant containing a radiation-curable adhesive to the opening, Then, the sealant 0 is cured. The repair method for a liquid crystal display unit process described in item 1 of the scope of the patent application, wherein the step of cutting the closed end of the channel is achieved using laser light. 7. The method for repairing a liquid crystal display unit process according to item 6 of the scope of the patent application, wherein the pair of substrates are made of a glass substrate, and the laser light used in the step of cutting the closed end of the channel has a The preset power allows the laser light to cut the seal without damaging the glass substrate. 8. The method for repairing a liquid crystal display unit process according to item 6 of the scope of the patent application, wherein the laser light used in the channel closed-end incision step enters the liquid crystal display unit through one of the pair of substrates and Reach the seal. 00740.ptd Page 21 594209 VI. Patent application scope 9: The repair method for the liquid crystal display unit process described in item 8 of the patent application scope, wherein one of the pair of substrates is in the vicinity of the sealed end of the channel No line pattern is provided. 10. A repair method for a liquid crystal display unit manufacturing process, the method comprising the following steps: providing a liquid crystal display unit having a pair of substrates, a liquid crystal layer, and a seal member disposed between the pair of substrates for One of the substrates is fixed to the other substrate, wherein the seal includes a first portion enclosing a display area of the liquid crystal display unit and a second portion defining at least one cavity adjacent to the first portion of the seal; cutting The seal allows a predetermined number of chambers to communicate with the display area of the liquid crystal display unit; and squeezing the liquid crystal display element so that excess liquid crystal material flows out of the display area and flows into the cavity communicating with the display area room. 11. The repair method for a liquid crystal display unit manufacturing process as described in item 10 of the scope of the patent application, wherein each cavity defined by the second part of the seal is adjacent to each other. 1 2. The repair method for a liquid crystal display unit manufacturing process as described in item 10 of the scope of the patent application, wherein the step of cutting the seal is achieved by using laser light to reach 0. 00740.ptd Page 22 594209 VI. Patent application scope 1 3. The repair method for the liquid crystal display unit process described in item 12 of the patent application scope, wherein the pair of substrates are made of a glass substrate, and The laser light used in the cutting step of the seal has a predetermined power so that the laser light can only cut the seal without damaging the glass substrate. 14. The method for repairing a liquid crystal display unit process according to item 12 of the scope of patent application, wherein the laser light used in the sealing member cutting step enters the liquid crystal display unit from one of the pair of substrates. And reach the seal. 15. The method for repairing a liquid crystal display unit process according to item 14 of the scope of patent application, wherein one of the pair of substrates is not provided with any circuit pattern in a region adjacent to the sealed end of the channel. 16. A liquid crystal display device using a drop-injection method (ODF), which includes at least a backlight module and a liquid crystal display unit. The liquid crystal display unit includes: a first substrate; a second substrate; a liquid crystal layer is sandwiched between the first substrate and the second substrate; a seal is provided between the first substrate and the second substrate; To fix the first substrate to the second substrate, wherein the sealing member includes a first part 00740.ptd Page 23 594209 VI. The scope of patent application extends along the edge of a display area of the first substrate and has a first opening, and a second part defines a channel, one end of which is connected to the seal The first part has a second opening at the other end of the channel; a mouthpiece seals the second opening of the seal. 17. The liquid crystal display device according to item 16 of the scope of patent application, wherein a boundary between the first portion and the second portion of the seal member has a protrusion each defining the first opening. 18. The liquid crystal display device according to item 16 of the scope of patent application, wherein the seal is formed of a sealant containing a radiation-curable adhesive. 19. The liquid crystal display device according to item 16 of the scope of patent application, wherein the seal has an inner surface contacting the liquid crystal layer and an outer surface, and the outer surface of the seal is completely free of the liquid crystal material. 20. The liquid crystal display device according to item 16 of the scope of patent application, wherein the two substrates include a thin film transistor substrate and a color filter substrate. 21. The liquid crystal display device according to item 16 of the scope of patent application, wherein the two substrates include a laminated color filter (COA) and an opposite substrate having a common electrode. 2 2. The liquid crystal display element according to item 16 of the scope of patent application, wherein the 00740.ptd Page 24 594209 6. Scope of patent application The two substrates include an in-plane switching mode (IPSm o d e) thin film transistor substrate and an opposite substrate. 2 3. A liquid crystal display element using a drop injection method (0D F), which includes at least a backlight module and a liquid crystal display unit, wherein the liquid crystal display unit includes: a first substrate; a second substrate; a liquid crystal layer Sandwiched between the first substrate and the second substrate; a seal is provided between the first substrate and the second substrate for fixing the first substrate to the second substrate, wherein the seal includes a first One part surrounds a display area of the liquid crystal display unit and a second part defines a channel. One end of the channel is closed by the first part of the seal and the other end of the channel defines an opening. 24. The liquid crystal display device according to item 23 of the scope of the patent application, wherein the seal is formed of a sealant containing a radiation-curable adhesive. 25. The liquid crystal display device according to item 23 of the scope of patent application, wherein the seal has an inner surface contacting the liquid crystal layer and an outer surface, and the outer surface of the seal is completely free of the liquid crystal material. 26. A liquid crystal display element using a drop-injection method (0DF), comprising at least a backlight module and a liquid crystal display unit, wherein the display unit 1 00740.ptd Page 25 594209 6. The scope of patent application includes: a first substrate; a second substrate; a liquid crystal layer is sandwiched between the first substrate and the second substrate; a seal is provided on the first substrate And the second substrate is used for fixing the first substrate to the second substrate, wherein the seal includes a first portion extending along an edge of a display area of the first substrate, and a second portion defining at least one The cavity is adjacent to the first part, wherein the liquid crystal layer is simultaneously distributed in the display area surrounded by the first part of the seal and at least one cavity. 27. The liquid crystal display device according to item 26 of the scope of patent application, wherein the seal is formed of a sealant containing a radiation-curable adhesive. 28. A drop display (0DF) crystal display element including at least a backlight module and a liquid crystal display unit, wherein the liquid crystal display unit includes: a first substrate; a second substrate; a liquid crystal layer sandwiched between the Between the first substrate and the second substrate; a seal is provided between the first substrate and the second substrate to fix the first substrate to the second substrate, and the seal includes a first portion along the Extending along an edge of a display area of the first substrate, and a second portion defining at least one cavity immediately adjacent to the first portion, 00740.ptd Page 26 594209 00740.ptd Page 27