TW200417772A - Liquid crystal display panel with fluid control wall - Google Patents

Abstract

A substrate includes fluid control walls for controlling the liquid crystal fluid closer to the liquid crystal dropped spot of a display area or frame-like fluid control walls between a sealing material and the display area. After the liquid crystal is dropped on the display area, a pair of substrates are pasted and then picked out in the atmosphere for applying pressure onto the pair of substrates and diffusing the liquid crystal. The liquid crystal fluid control walls serve to control the liquid crystal fluid, thereby suppressing the liquid crystal contamination caused by the contact of the unhardened sealing material with the liquid crystal and the relevant display failure.

Description

200417772 (1) Description of the invention: [Technical field to which the invention belongs] The present invention relates to a liquid crystal display panel, which is manufactured using a liquid crystal drop-in filling method. [Prior Art] As a thin and light display device with low power consumption, liquid crystal display devices have gradually become popular. The liquid crystal display device is designed to build a driving circuit and related circuits in a flat panel device called a liquid crystal display panel. FIG. 1 is a cross-sectional schematic diagram for explaining a schematic structure of a liquid crystal display panel (usually referred to as a display panel in this specification). As shown in FIG. 1, the liquid crystal display panel 9 is constructed with a pair of overlapping substrates with liquid crystals placed therein, and the overlapping substrates are composed of a thin film transistor (only referred to as a TFT) substrate (also referred to as a TFT substrate) la and other shirts. The color filter substrate lb (also referred to as a CF substrate) is composed of three color filters of red (R), green (G), and blue (B) in a normal mode. In addition, a spacer 4 is placed between the substrate pair 1a and 1b to control the gap between the two substrates. A sealing material 7 is filled into the substrate, and "sealed around the lb for 4 minutes" to adhere the substrates 1 & 1b. The methods proposed so far for manufacturing the liquid crystal panel 9 are roughly divided into a liquid crystal injection method and a liquid crystal dripping filling method The method of injecting liquid crystal is to combine the TFT substrate and the CU substrate. The substrates la and lb are overlapped with each other, and the liquid crystal 5 is injected into the gap between the TFT substrate la and the CF substrate ib. On the other hand, the liquid crystal dropping filling method is to drop a specified amount of liquid crystal 5 into a TFT substrate and one of the substrates, and overlap these substrates with each other, and paste the two. This method is to combine the liquid crystal display panel 9 and the liquid crystal injection at the same time.

S7519.DOC 200417772 Generally, the gap between the TFT substrate 1a and the CF substrate 1b of the liquid crystal display panel 9 is the narrowest of 3 to 5 microns. Therefore, through the liquid crystal dripping and filling method, if the liquid crystal 5 is to be completely filled into the gap of 3 to 5 micrometers, a vacuum chamber needs to be used to make the interval of the liquid crystal display panel into a vacuum, so that the liquid crystal contacts the liquid crystal inlet of the display panel, and The liquid crystal is injected through the capillary effect and the pressure difference between the inside and outside of the LCD panel. However, in this method, a 3 to 5 meter interval becomes true moxa, and the operation of injecting liquid crystal takes a long time. In particular, when the liquid crystal display panel is enlarged and the gap between the substrates is narrowed, the time required to inject liquid crystals becomes considerably longer. In addition, the inlet must be sealed after the injection operation is completed. In these cases, the operation of injecting liquid crystal will become a factor that increases the manufacturing cost. On the other hand, the liquid crystal dripping and filling method does not require a vacuum operation, that is, it is not necessary to depressurize the 3 to 5 micron interval between the TFT substrate 1a and the CF substrate 1b, both of which constitute the liquid crystal display panel 9. In addition, this method does not require the operation of sealing the liquid crystal inlet. Furthermore, the time required to fill the liquid crystal becomes shorter. Therefore, compared with the liquid crystal injection method, the liquid crystal dripping filling method can reduce the time required for filling the liquid crystal into the display panel. Hereinafter, manufacturing using a liquid crystal injection method or a liquid crystal dropping filling method will be described. Manufacturing using a liquid crystal injection method includes the following steps. (1) Apply a sealing material to surround the liquid crystal display area and form an opening (liquid crystal inlet) through which liquid crystal is injected into the surrounding coating. (2) Place spacers so that the interval between the substrates is 3 to 5 microns. In the case of using one or two substrates with spacers included, no need to place

87519.DOC 200417772 spacer. (3) Position and attach the two substrates. (4) Depending on the type of sealing material, irradiate ultraviolet light or heat the substrate to harden the sealing material. The above-described operation is completed interval having a display panel on the substrate between the liquid crystal. Next, (5) In the case where a plurality of liquid crystal panels are formed from a large substrate, the substrate is cut to the size of each panel. (6) Place the LCD panel in a vacuum chamber to inject liquid crystal into the gap between the pair of substrates adhered to each other. Then, the space in the liquid crystal display panel is decompressed by decompressing the vacuum chamber. (7) The liquid crystal is brought into contact with the liquid crystal inlet of the display panel, and the pressure in the vacuum chamber is increased to atmospheric pressure or more. As a result, liquid crystal is injected through the capillary effect and the pressure difference between the inside and outside of the liquid crystal display panel. (8) After wiping the liquid crystal adhered to the liquid crystal inlet, seal the liquid crystal inlet with a UV-curing resin or the like. Next, a liquid crystal drip filling method will be described with reference to FIGS. 2A to 2E. 2A to 2E are conceptual diagrams for describing a method of manufacturing a liquid crystal display panel by using a liquid crystal drop-in filling method. 2A to 2E depict four LCD panel 9 each from a large substrate shown in FIG. The manufacturing method using the liquid crystal dripping filling method includes the following steps. (1) Place a spacer 4 (see Fig. 1) so that the space between the substrate pair 1 a and 1 b

87519.DOC 200417772 holds 3 to 5 microns. For using one or two substrates with spacers included, no spacers are required. (2) By using a dispenser (see FIG. 2A), the sealing material 7 is applied as a frame so as to surround the display area of one or both substrates (in FIGS. 2A to 2E, the substrate lb). Before or after the sealing material 7 is applied, the sealing material 70 is applied to the outside of the sealing material 7 to fix the two large substrates by using the same dispenser during manufacturing, and cut into four display panels. (3) Drop a specified amount of liquid crystal 5 into the inside of the sealing material 7 (see FIG. 2B). (4) After positioning the substrate pairs 1 a and 1 b with each other, adhere the substrates in a reduced pressure atmosphere (see FIG. 2C). (5) Remove the adhered substrate to atmospheric pressure. Next, in order to harden the sealing material 7, according to the hardening conditions of the sealing material 7, an ultraviolet light 8 is used to apply ultraviolet light to the sealing material, or the substrate 1 is heated (see Fig. 2D). (6) In the case where a plurality of liquid crystal display panels 9 are manufactured from the large substrate 1, the large substrate 1 is cut to a panel size (see FIG. 2E). The above operation completes the liquid crystal display panel 9. The above-mentioned liquid crystal drip filling method is proposed, for example, in JP-A-62-89025 (Publication 1). In this liquid crystal filling and filling method, there is no need to make a 3 to 5 micron interval between the pair of bonded substrates into a vacuum. In addition, there is no need to seal the LCD inlet. Furthermore, since the filling of liquid crystal is fast, the drip filling method can reduce the time for filling the liquid crystal display panel compared to the liquid crystal injection method. However, the liquid crystal drop-in filling method has a disadvantage, that is, the bonding strength between the sealing material and its plate pair is low, and the sealing material may lose the proper form. 87519.DOC -9- 200417772 Because the liquid crystal is in contact with the sealing material that has not yet hardened . In addition, the contact between the uncured sealing material 1 and the liquid crystal causes the liquid crystal to be dyed, which will cause the display to fail. To avoid the contact between the uncured sealing material and the liquid crystal, a sealing material without liquid crystal pollution is required. In addition, as a method of product structure and manufacturing process, the method of placing a frame-shaped wall between the liquid crystal and the sealing material to avoid contact between the unhardened sealing material and the liquid crystal. This method is disclosed in ρ_Α · 63_98 (publication 2), jP_A_6_194615 (publication 3), and (publication 4). [Summary of the Invention] Figures 3A to 3D, Figures 4A and 4B, and Figure 5 are conceptual diagrams illustrating the liquidization of liquid crystals filled by dripping liquid crystals. In FIGS. 3A to 3D, plan views are shown on the upper side and each plane is shown on the lower side along a cross section along the front A to A. In Figs. 4A and 4B, the plan view is shown on the right side, and each plane is shown on the left side along the section of arrow VIII to A. Similarly, in Fig. 5, a plan view is shown on the right side, and a cross section of each plane along A to A is shown on the left side. In the case of manufacturing a liquid crystal display panel by using the above-mentioned liquid crystal drip-filling method, and in the related patent disclosed in JP-A-62-89〇25 (Publication 0), when the substrates are overlapped with each other, and the gaps are filled up In the case of liquid crystal, the liquid crystals 5 dropped on the substrate are distributed concentrically with the dropping point as the center, as shown in FIGS. 3A to 3B to 3C to 3D. Each time, the interval between the substrate pair la and lb It becomes narrower until the predetermined interval controlled by the spacer 4. As mentioned above, the liquid 5 is centered on the dropping point and is distributed concentrically (shown in dotted lines). As shown in Figure 4A, therefore, When the LCD 5 does not completely fill the LCD

87519.DOC -10- 200417772 When the display panel 9 and the gap between the substrates la ^ b have not reached the predetermined gap-there are 4 knives 12 ′ where the liquid crystal 5 is in contact with the sealing material 7. When the liquid crystal $ is filled in the entire surface of the liquid crystal display panel 9 as shown in FIG. 4β, finally, the gap between the pair of the substrate d and the lb becomes narrower, and therefore the width of the sealing material 7 is wider. In this case, the sealing material 7 collides with the liquid crystal 5 in contact with the substrate (see part U of FIG. 4B), which has a disadvantage, which makes the bonding strength between the sealing material 7 and the substrate 1a. Is lower. In addition, in order to avoid the liquid crystal pollution caused by the sealing material 7, the method disclosed in the above-mentioned publication 1 or 3, before the liquid crystal contacts the sealing material, the frame-shaped wall 8 is placed inside the sealing material and outside the area of the liquid crystal display, and The step of separating the unhardened, sealing material from the liquid crystal or hardened sealing material. However, in the manufacture of liquid crystal display panels by using the liquid crystal drop-in filling method: Situation 'The liquid crystal drips in an amount, so that the gap between the substrate pair reaches the gap determined by the spacer controlled by the spacer, that is, when the liquid crystal is distributed On the entire surface of the LCD panel, the spacing is the same as that of the wall 8. Therefore, before and after the base peaks a and 1b overlap each other, as shown in FIG. 5, the liquid crystal 5 is higher than the wall 8 (h < H) 'so that the substrate 1 & does not stick to the wheel 8. Therefore, the liquid crystal $ overflows from the gap between the wall 8 and the opposite substrate lb, so that the unhardened sealing material 7 is healed by the liquid crystal 5 in contact with the contact portion 12. This will cause the display to malfunction due to LCD contamination. The purpose of this Maoyue is to provide a liquid crystal display panel which is designed to overcome the above disadvantages of the prior art. Another object of the present invention is to provide a liquid crystal display panel, which is manufactured using a liquid crystal drop-in filling method and is designed to prevent a gap between a sealing material and a substrate.

87519.DOC -11-, mouth bismuth "insufficient" and degradation form of sealing material due to sealing material and substrate surface contact to prevent display failure. ， T 毛 月 疋 Another purpose is to provide a liquid crystal display device, which is manufactured using a liquid-filling method, and by controlling the fluidization of the liquid crystal, preventing the sealing material due to the hard crystal and the adhesive substrate. Liquid crystal pollution caused by contact. For the above purpose, according to one aspect of the present invention, the liquid crystal display panel "opposite a substrate, in which liquid crystal is placed, a frame-like β seal formed by a sealing material, and a wall located inside the sealing portion. (Fluid control wall). Preferably, the fluid control wall is placed near the drip point of the liquid crystal. By placing > the body control wall close to the liquid crystal dropping point, the adhesiveness after coating the liquid crystal can be controlled, so that the liquid crystal can be distributed in a concentric circle centered on the dropping point, so that the liquid crystal can be distributed in a rectangular shape instead of a circular shape. . This can increase the filling factor of the liquid crystal and control the time when the liquid crystal contacts the sealing portion is substantially fixed until the gap between the substrate pair is close to a predetermined unit interval controlled by the spacer, and does not depend on the sealing portion and the liquid crystal drop. Distance between entry points. The result can prevent the change of the degradation form and the bonding strength of the initial and seal points. Preferably, the wall on the substrate may be formed by coating or printing a photosensitive resin or ceramic on one or both of the substrates, and applying a photolithography to the printed substrate, or directly coating or printing such materials. According to another aspect of the present invention, the liquid crystal display panel includes a pair of substrates, in which liquid crystals are placed, a sealing material formed by a sealing material on the substrate pair, a frame-shaped sealing portion, and a fluid control wall, and the fluid control wall has three layers. Or more frames, or three or more layers that are essentially frame-like,

87519.DOC -12- 200417772 and placed in such a way that there is a gap between them. By placing the fluid control wall in three or more layers in a frame-like or substantially frame-like manner during the process of attaching the substrate after the liquid crystal is coated, the liquid crystal of a fluid control wall can be collided between the fluid control wall and the adjacent wall. Interval, stop for a fixed time interval. This makes it possible to prevent liquid crystal contamination caused by the unhardened sealing material. Preferably, the fluid control wall formed as described above is located between the sealing portion and the display area, and is formed with a regular gap or a so-called labyrinth structure. According to another aspect of the present invention, the liquid crystal display panel includes a pair of substrates, in which liquid crystals are placed, a frame-shaped seal formed of a sealing material on the substrate pair is sealed for 4 minutes, and a frame-shaped fluid is placed near the drop point of the liquid crystal. The control wall is located on the inside of the Lan Feng Shao Fen, and is located between the sealed portion and the display area. As above, after the liquid crystal is applied, the fluid control wall is placed close to the fluid control wall. It is placed on the inside of the seal, outside the LCD display area, and placed near the liquid control wall of the liquid drop. It is possible to control the concentric circular distribution of the liquid crystal centered on the dropping point, and change the distribution form of the liquid crystal from rectangular to rectangular. This can improve the fill factor of the liquid crystal and prevent the liquid from contacting the frame located on the inside of the sealing part and outside the LCD display area until the gap between the pair of substrates is close to the space by the spacer. Unit interval. As a result, a frame-like fluid control wall located on the inside of the sealed portion of the frame is used to prevent the liquid crystal strips from solidifying for time, thereby preventing liquid crystal contamination due to the unhardened sealed portion. Not > = > It is to be understood that the present invention is not limited to the above-mentioned composition or the specific embodiments mentioned below

87519.DOC -13- 200417772 embodiment, and can be changed into various forms without departing from the spirit of the present invention. [Embodiment] Hereinafter, specific embodiments of the liquid crystal display panel will be described in detail with reference to the drawings. 6A to 6C are exemplary diagrams showing a liquid crystal display panel according to a first embodiment of the present invention. Fig. 6A is a perspective view showing a large-sized TFT substrate 1, which is cut into four panels. Fig. 6B is an enlarged plan view showing a liquid crystal display panel shown in Fig. 6A. FIG. 6C is a cross-sectional view taken along a line A to A in FIG. 6B. Fig. 6A shows the positional relationship of each of the four liquid crystal display panels 9, the display area 2 of each panel, the sealing material 7 of each panel, and the fluid control wall 3 of each panel. As shown in FIG. 6C, each panel 9 includes a combination of a TFT substrate la and a CF substrate 1b, and a liquid crystal 5 therein. In the display area 2, a spacer 4 forming a gap between the control substrate pair la and lb, and a three-layer frame-like fluid control wall 3 are formed. Around the outside of the wall 3, a frame-like sealing material 7 is attached. A sealing material 7 formed around the outermost portion is used to adhere the large substrate 1. This specific embodiment is characterized in that a large substrate 1 is used, which includes a pre-formed fluid control wall 3 to control the flow rate of the liquid crystal 5 inside or / and outside the display area of the TFT substrate or CF substrate, and is formed in the TFT substrate or CF substrate. A transparent electrode and a TFT circuit required to drive the liquid crystal 5. In the case of manufacturing the liquid crystal display 9 using the liquid crystal 'drip-fill method, the liquid crystal is dropped on any large substrate cut into a TFT substrate, and another substrate cut into a CF substrate. In this specific embodiment, the liquid crystal 5 is dropped on a large substrate 1 which becomes a TFT substrate. Then, another large substrate (becoming a CF substrate) was attached to the former large substrate before the pressure reduction under the pressure of 87519.DOC -14-200417772. This process allows the liquid crystal 5 to fill the entire surface of the large substrate at the same time, and the liquid crystal display panel 9 is combined. In the process of making the gap between two large substrates (referred to as the cell gap) that is heavy to each other to a predetermined size controlled by the spacer 4 and filling the liquid crystal 5 into the liquid crystal display region 2, the liquid crystal is a drip point As the center, the concentric circular blade cloth is shown in FIG. 3. Therefore, in the process of filling the liquid crystal into the cell gap 'at the portion 12, the sealing portion 7 is in contact with the liquid crystal 5. In this case, because the gap between the substrate pairs is unexpectedly determined in advance, as the person fills in, the dropped liquid crystals 5 are distributed over the entire surface of the display panel 9. Finally, the gap between the two substrates is narrower, as shown in Fig. 4B ', making the width of the sealing material 7 wider. In this case, the sealing material collides with the portion where the liquid crystal 5 is in contact with the two substrates (see part 11 in FIG. 4B). This has the disadvantage of reducing the bonding strength between the sealing material 7 and this portion η of the two substrates. Therefore, a fluid control wall 3 the substrate 1 formed on 0 or both sides, by controlling the concentric circular distribution of the liquid crystal 5 fluid to avoid filling the liquid crystal, until the gap between the two substrates reaches the predetermined gap controlled by the spacer 4, the sealing material 7 and the liquid crystal 5. Next, the manufacture of the fluid control wall 3 will be described with reference to FIGS. 7A to 7D are exemplary diagrams illustrating a process of manufacturing a fluid control wall. 8 to 7D in the figure, first, the photosensitive resin 20 is coated on the substrate 丨 by a spin coating method, a slit coating method, or a printing method so that the resin 丨 can have a predetermined thickness (see FIG. 7A). Next, the photomask 21 is used so that the fluid control wall 3 can appear convexly on the substrate! on. With the photomask 21, the photosensitive resin 20 is exposed by using an exposure source 22 (see FIG. 7B). After that, the development of the coated substrate is performed, and the process of removing the photosensitive resin 20 coated on the part where the fluid control wall 3 is not formed is performed (see the figure).

87519.DOC -15- 200417772 7C). Finally, the developer adhered to the substrate is washed away, and the substrate i is dried. Next, the fluid control wall 3 is convexly completed on the substrate 1. Alternatively, a method of directly coating the photosensitive resin 3 or the thermosetting resin on the substrate by using a printing method or a dispensing method is proposed, so that the fluid control wall 3 can be formed convexly, and then a predetermined process is performed to The convex portion is hardened. Next, the effect of the fluid control wall 3 in the case where a liquid crystal display panel is manufactured by the substrate of this specific embodiment will be described with reference to Figs. 8A to 8D and 9A and 9B. 8A to 8D are diagrams for explaining a fluid control wall effect of the first embodiment of the present invention. Above 8 8-81), the formula shows a plan view. Below it, a cross section along the line A-A of the plan is shown. In addition, Fig. 9 and Fig. 9 are diagrams for explaining the fluid control wall effect of the first embodiment of the present invention. Above FIGS. 9A and 9B, a plan view is shown. Below it, a cross section along line A-A of the plan view is displayed. On a large substrate with a fluid control wall 3 formed thereon, a sealing material 7 is coated on the outside of the liquid crystal display panel, and a spacer 4 is placed on the substrate i. 7 beginning sealing material for binding two substrates of the liquid crystal material and to prevent leakage. The spacer 4 is used to fix the interval between the substrates when the liquid crystal display panel is assembled. Next, the liquid crystal 5 is dropped on one of the large substrates (here, it corresponds to a TFT substrate represented by a numeral la). The total amount of the liquid crystal 5 dropped is equal to the volume of the space defined by the inside of the two substrates and the sealing material 7. Preferably, the total amount of liquid crystal $ is divided into several drops. The liquid crystal can be dropped on any substrate having a fluid control wall 3 formed thereon and another substrate without the fluid control wall 3. Subsequently, under reduced pressure, and the other substrate was added dropwise completely la 5 of the liquid crystal substrate

87519.DOC -16- 200417772 lb overlap (see Figure 8A). Can be pressed on overlapping substrates ia and ib. When the substrate la overlaps with another substrate lb, the liquid crystals 5 may be distributed in a concentric circle shape (see FIG. 8B). However, the fluid control wall 3 is used as a resistance to the liquid crystal flow, and thus the flow velocity of the wall-forming portion is slower than that of the other portions without the wall. Therefore, by placing the fluid control wall 3 with the liquid crystal dropping point as the center, the liquid crystals 5 are distributed in a rectangular shape instead of a concentric circle shape (see FIGS. 8C and 8D). 3 provides the flow control wall 'is the liquid crystal in order to avoid direct $ 9 distributed in the liquid crystal display panel, until the two substrates ia reaches the gap 6 Shu controlled by a spacer 4 of a predetermined unit interval, caused by the liquid crystal 5 in contact with the sealing member 7. This makes it possible to minimize the amount of the sealing material 7 colliding with the substrate and the portion in contact with the liquid crystal 5, which solves the problem of the decrease in the bonding strength between the sealing material 7 and the two substrates 1a and 1b. The above description is about dripping liquid crystal The sealing material 7 on the substrate 1 a may be coated with the sealing material 7 on the opposite substrate ib. Alternatively, the sealing material 7 may be coated on both substrates. In addition, the above description also concerns the spacers on the substrate into which the liquid crystal is dripped. 4. the coating may be applied to the spacer opposite the substrate 4 "or two substrates & on a LB. The spacer may be circular or cylindrical. Like the fluid control wall, the spacer can be formed on the substrate in advance by using a photosensitive resin or the like. As shown in FIGS. 6A to 6C and 8A to 8D, the fluid control wall 3 can be placed to control the liquid crystal 5 fluid only near the sealing material 7 or to control the surrounding fluid dripping into the liquid crystal (four sides of each display panel of FIGS. 9A and 9B). ), Na as a second specific embodiment of the present invention embodiment. In addition, the above description = the rectangular (or square) distribution of the liquid crystals 5 effected by the fluid control wall 3 effect. According to this specific embodiment, the purpose of placing the fluid control wall 3 is to control the liquid crystal 5:

87519.DOC -17 · 200417772 fluid ’and prevent the door of the sealing material from being washed ... 丄 间-between < contact until the interval between the two substrates reaches the ^, " pre-determined 疋 interval specified by the spacer 4. Therefore, the position of the fluid-made wall 3 does not need to be read, and the night / day distribution is rectangular. It is only necessary to place the fluid control wall 3 in the form of a sealing material setting. FIG Zhigang for explaining the position of the wall cross section of the fluid control. If the wall is placed ^ to control the liquid crystal fluid, the height hi of the fluid control wall 3 can be adjusted to be equal to the height of the early interval h, after the group of people on the liquid crystal display panel is shown in FIG. 10a. In addition, as shown in the figure, the height hl can be adjusted to be lower than the unit gap. Furthermore, the fluid control wall 3 may be formed on the two substrates 1 & and 113. The fluid control wall 3 formed on one substrate la can be formed on another substrate in position. The above matches are overlapped as shown in FIG. 10C. Alternatively, the position of the former wall 3 may not match the latter wall 3, that is, the wall 3 may be arranged as a labyrinth structure. The degree of fluid control wheel 3 may be equal to the height of the unit interval h, and may be lower than the height of the unit interval h after or after the group θ shown in FIG. 100 as shown in the log. 11A to 11D are exemplary diagrams showing exemplary forms of a fluid control wall. The fluid control wall 3 may be a close arrangement of a prismatic wall as shown in FIG. 10A, a cylindrical wall or a conical wall as shown in FIG. 11β, or a cylindrical wall or a wall therebetween as shown in FIG. 11c. Conical wall arrangement. In this case, the combination of cylindrical or conical fluid control walls can be arranged at regular or irregular intervals. It goes without saying that the fluid control wall 3 can provide the same function as the spacer, and when the substrates are combined, the interval between the two substrates is fixed. Fig. 12 is a conceptual diagram explaining the fluidization of liquid crystal. Figures 13 and 14 are conceptual diagrams explaining the effects of a fluid control wall. Fig. 15 is an exemplary diagram showing the position of the fluid control wall. The flow rate of dripping liquid crystal can be based on, for example, the difference in the dripping direction due to conditions such as the connection steps between the contact of the TFT substrate and the liquid crystal 5 in 87519.DOC -18-200417772, the pattern of the CF substrate, the printing status of the orientation film, and the polishing status. And change. Fig. 12 shows a case where the flow velocity in the Y direction is faster than that in the X direction, and the dropped liquid crystals are distributed in an oval shape according to the above conditions. If the flow velocity in the X direction and the flow velocity in the Y direction are different, the liquid crystal fluid control wall 3 that controls the liquid crystal flow rate may be arranged so that the positions of the wall in the X direction and the wall in the Y direction are different, that is, more walls are placed in a faster flow direction. This makes it possible to increase the fluid resistance and therefore to control the fluid more easily. Fig. 13 shows the position of the liquid crystal fluid control wall 3, which controls only the liquid crystal 5 fluid near the sealed portion (which indicates that there is no fluid control in the center of the display panel). Fig. 14 shows the position of the liquid crystal fluid control wall 3 to control the liquid crystal 5 fluid dripping around the substrate (four sides of Fig. 14). In the case where the liquid crystal fluid control walls 3 are located in the display area of the liquid crystal display panel, these walls 3 are preferably placed between the pixel PX patterns, as shown in FIG. 15. Usually, this purpose is to prevent the numerical aperture of the liquid crystal panel. In addition, the width of each wall 3 located between the pixel patterns needs to be smaller than the interval between the pixels. Figure 16 is an exemplary diagram showing the width of a liquid crystal fluid control wall. Preferably, the width of the wall 3 needs to be in the range of 10 to 50 microns. In the case of using a liquid crystal drip-filling method to manufacture a display panel, another disadvantage arises. That is, before the sealing material is completely hardened, the liquid crystal is contaminated by contact with the sealing material. Contamination may cause display malfunction. To prevent liquid crystal contamination caused by the contact between the unhardened liquid crystal and the sealing material, it is best to prevent the liquid crystal from contacting the sealing material until the liquid crystal fluid is controlled by a frame-like wall surrounding the display area and the sealing material has hardened. A third specific embodiment of the present invention will be described with reference to Figs. 17A to 17C. 17A to 17C are exemplary diagrams showing a liquid crystal display panel according to a third embodiment 87519.DOC -19-200417772 of the present invention. Fig. 17A is a perspective view showing a TFT substrate cut into four liquid crystal display panels. FIG. 17B is an enlarged plan view showing a liquid crystal display panel shown in FIG. 17A. Fig. 17C is a cross-section taken along line A-A in Fig. 17B. Fig. 17C shows that the TFT substrate 1a is superposed on another substrate, that is, the CF substrate 1b. 18A to 18C are exemplary diagrams showing the effects of a liquid crystal display panel according to a third embodiment of the present invention. FIG. 18A is an enlarged plan view showing a liquid crystal display panel shown in FIG. 17B. 18B and 18C are enlarged views showing corner portions of FIG. 18A. In FIGS. 17A to 17C, the substrate on which the liquid crystal is dropped is shown as substrate 1. In this specific embodiment, as shown in FIGS. 17A to 17C, the frame-like first fluid control wall 3a is formed inside the sealing material 7 coated around the display area 2 and formed outside the display area 2. The first fluid control wall 3a is preferably formed convexly. The first fluid control wall 3a is not allowed to contact the sealing material 7, but the wall 3a is placed as close to the sealing material 7 as possible. In addition, the second fluid control wall 3b is located inside the first fluid control wall 3a, and the third fluid control wall 3c is located inside the second fluid control wall 3b. Preferably, the distance between the walls 3a and 3b, or the walls 3b and 3c is about 2.5 cm. Of course, other intervals can provide the same effect. Therefore, the interval size is not limited to this value. The first fluid control wall 3a is formed in a rectangular shape without a slit. The second fluid control wall 3b includes a slit at a half position on each side. The third fluid control wall 3c includes a slit in each corner. In this specific embodiment, the width between the walls 3a and 3b, or between the walls 3b and 3c is 45 microns, and the slit is 30 microns. Now, a fluid process of liquid crystal in a case where a liquid crystal display panel is manufactured using a substrate of a specific embodiment using a liquid crystal dropping filling method will be described. 87519.DOC -20- 200417772 First, the process of dripping liquid crystal 5 is performed, which corresponds to the volume defined by the inside of the two substrates and the sealing material 7. The liquid crystal 5 is dropped in several times. Next, the substrate la of the liquid crystal 5 dripped on the other substrate lb was dropped under reduced pressure. At this time, pressure can be applied to the two substrates so that the gap between the substrates can reach a predetermined interval h controlled by the spacer 4. After the substrate B overlaps with another substrate 1b, the liquid crystals 5 dropped on the substrate 1a are gradually distributed over the entire surface of the substrate. In the first stage, the distributed liquid crystal 5 reaches the third fluid control wall 3 (see 18A). The liquid crystal 5 is distributed along the fluid control wall 3c and is located on the entire surface of the substrate. Then, the liquid crystals 5 overflow from the slits formed at each corner, and then are distributed to the outer periphery of the substrate 丄. The liquid crystals 5 overflowing from the slit formed at the corner of the third fluid control wall 3c reach the second fluid control wall 3b. It is then distributed along the second fluid control wall% 'and reaches around the outside of the panel (see Figure 18b). Slots are formed in the center of each side of the second fluid control 因此 Therefore, the liquid crystal 5 flows out from the slits formed in the second fluid control wall ′ and then is further distributed to the outer periphery of the substrate. The liquid crystal 5 overflowing from the slit of the second fluid control wall 3b reaches the first fluid control wall 3a, and then is distributed along the first fluid control wall 3a, and is shown on the panel. * The liquid crystal is sufficient to fill the first fluid control wall. The 2 sealing material 7 on the inside of the wall 3 a is hardened. Preferably, the density of the liquid crystal droplet filling method is human, and the human body is an ultraviolet light reaction type, or an ultraviolet light and / or thermal reaction type. To & harden the sealing material 7 at this time ' The contact between the non-hardened branch sealing material 7 and the liquid crystal 5 is used to prevent the display failure caused by the contamination of Wan Ye night crystal. No slit is formed in the first fluid

87519.DOC -21-200417772 There is no liquid crystal filling between the control wall 3a, the sealing material 7 and the first fluid control wall 3a. However, by heating the combined panel, the main purpose is to harden the sealing material 7 and stabilize the unit interval between the substrates 1 a and 1 b. The liquid crystal 5 will expand, so that a tiny gap can be formed between the substrate and the first fluid control wall 3 a. Slit. The liquid crystal 5 overflows from this slit, and then fills the space between the sealing material 7 and the first fluid control wall 3a. The dripped liquid crystal 5 is calculated in advance to match the gap between the two substrates 1a and 1b and the interval volume defined by the sealing material 7. Therefore, when the liquid crystal display panel is cooled, the liquid crystal completely fills the gap 5 between the two substrates so that the liquid crystal display panel can have a predetermined unit interval. The above specific embodiment has a structure in which as a gap of the second fluid control wall 3, a slit overflowed by the liquid crystal is formed at the center of each side. If the liquid control effect of the liquid crystal is obtained, two or more slits can be formed on each side. In addition, this embodiment also has a structure in which the slit of the second fluid control wall 3b is located at the center of each frame side, and the slit of the third fluid control wall 3c is located at the corner of each frame side. Where appropriate, the slit of the second fluid control wall 3b is located at a corner of each frame side, and the slit of the third fluid control wall 3c is located at the center of each frame side. In the above specific embodiment, therefore, the slit position of the second fluid control wall 3b is shifted by the slit of the third fluid control wall 3c. If the liquid control effect of the liquid crystal is obtained, the slit of the second fluid control wall 3b can be matched with the third fluid control wall 3c. In addition, although three fluid control walls 3 are provided in the above specific embodiment, the same effect can be obtained by more types of walls. FIG. 19 is a plan view similar to FIG. 18, and illustrates a liquid crystal display panel according to a fourth specific embodiment of the present invention. In this specific embodiment, as shown in 87519.DOC -22-200417772 in Fig. 19, each slit of the second and third fluid control walls 3b and 3c is formed, and another fluid control wall 3d opposite and close to each other is formed. The fluid control wall 3d is used to prevent liquid crystals from overflowing through each slit. This fluid control wall 3d has a function of preventing liquid crystal flow from overflowing through the slits formed in the second and third fluid control walls 3b and 3c. In particular, the fluid control wall 3d is arranged in a concentric circle centered on the dropping point, and the liquid crystal 5 The distribution has substantially the same form as the position of the sealing material 7. This specific embodiment can provide the same effect as the foregoing specific embodiment. 20A and 20B are exemplary diagrams showing a liquid crystal display panel according to a fifth embodiment of the present invention. FIG. 20A is a plan view similar to FIG. 19. Fig. 20A is a cross section taken along the line A-A in Fig. 20A. As shown in Figs. 20A and 20B, another fluid control wall 3d is located near a liquid crystal dropping point indicated by a virtual circle. In addition, the frame-like walls 3a, 3b and 3c are located between the sealing material 7 and the display area 2. The other fluid control wall 3d located near the dropping point of the liquid crystal is used to prevent the concentric circular distribution of the liquid crystals 5 centered on the dropping point. According to this specific embodiment, as described above, the distribution form of the liquid crystals 5 is not circular but square, and is shaped by a square sealing material 7. This effectively increases the filling factor of the liquid crystal 5, and greatly prevents the liquid crystal 5 from coming into contact with the frame-like wall 8 located inside the sealing material 7 and outside the display area until the gap between the two substrates approaches the predetermined cell interval. As proposed above, according to the present invention, the fluid control wall is located near the liquid crystal dropping point. These walls are used to prevent the liquid crystal from flowing, thereby reducing the liquid crystal flow rate. According to this principle, the present invention can control the concentric circular distribution of liquid crystals centered on the dropping point, so that the distribution form of the liquid crystals is not circular, but a square shaped by a square sealing material. This effectively increases the fill factor of the liquid crystal, 87519.DOC -23- 200417772 and brings the liquid crystal into contact with the sealing part. The contact time is substantially fixed, regardless of the distance between the sealing material and the drop point of the liquid crystal, until the two substrates the controlled close clearance between the spacer by a predetermined cell gap. This effect prevents the form failure of the sealing material and the change in bonding strength. In addition, by forming a frame-like sealing material on the substrate of Wan and Shishi, and three or more layers of frame-shaped fluid control wall on the side of the sealing material, the process of sticking the substrate in the coating liquid core can prevent the overflow from the first wall. liquid, in the fluid control o _ the space between the wall of the fluid control - fixed time, so as to prevent contamination of the liquid crystal sealing material of the hardened yet, and contamination preventing malfunction of a liquid crystal display. In addition, the fluid control wall is located near the LCD drop-in point, and other frame-shaped fluid control walls are also located between the sealing material and the display area. (Iv) the fluid located close to the wall of a liquid crystal dropping point for controlling the entering point of drops of a liquid crystal centered circular distribution with t 'in the adhesive after the coating process of the liquid crystal, the liquid crystal and thereby open the knife cloth / no circular formula It is a rectangle (square) shaped by the sealing material. This function can increase the fill factor of the liquid crystal and prevent the liquid crystal from contacting the sealing material frame and the frame-like wall outside the display area until the gap between the two panels is close to a predetermined unit interval. This is to provide high-grade beta liquid crystal display panel 'via of the frame-shaped fluid control wall inside the sealing member, arranged to improve the blocking effect of the liquid crystal fluid duration: and thereby prevent the liquid crystal from the uncured sealing material contamination, and to prevent the liquid crystal pollution of display failure. = Knowing this, "Persons need to understand further" Although the above description is for the purpose of clarifying specific embodiments, the present invention is not limited to this, and may not deviate from this

87519.DOC -24- 200417772 Various changes and modifications of the spirit of the invention and the scope of the attached patent application. [Brief description of the drawings] FIG. 1 is a cross-sectional schematic diagram explaining the general structure of a liquid crystal display panel, and FIGS. 2A to 2E are conceptual diagrams explaining a method of manufacturing a liquid crystal display panel using a liquid crystal drip-filling method; FIG. 3 A to 3D are conceptual diagrams, explaining liquid crystal fluidization by the liquid crystal dripping and filling method, and FIGS. 4A and 4B are conceptual diagrams, explaining liquid crystal fluidization by the liquid crystal dripping and filling method, and FIG. 5 is a conceptual diagram. The liquid crystal is explained in the liquid crystal full-filling method. Figures 6A to 6C are exemplary diagrams showing a liquid crystal display panel according to a first embodiment of the present invention. Figures 7A to 7D are exemplary diagrams showing a manufacturing fluid. The process of controlling the wall; Figures 8A to 8D are exemplary diagrams showing the effects of the fluid control wall in the first embodiment of the present invention; Figures 9A and 9B are exemplary diagrams showing the fluid control wall in the second embodiment of the present invention Figs. 10A to 10E are cross-sections for explaining the position of the fluid control wall; Figs. 11A to 11D are exemplary diagrams showing an exemplary form of the fluid control wall; Fig. 12 is a conceptual diagram for explaining the fluid control wall. Figure 13 is a conceptual diagram explaining the effect of the fluid control wall; Figure 14 is a conceptual diagram explaining the effect of the fluid control wall; 87519.DOC -25- 200417772 Figure 15 is an exemplary diagram showing the fluid Location of the control wall; Figure 16 is an exemplary diagram showing the width of the fluid control wall; Figures 17A to 17C are exemplary diagrams showing the LCD panel 7F benefit panel according to the third embodiment of the present invention, and Figures 18A to 18C are An exemplary diagram showing a liquid crystal display 7F according to a specific embodiment of the present invention as a panel effect, FIG. 19 is a plan view explaining a liquid crystal display panel according to a fourth specific embodiment of the present invention, and FIGS. 20A and 20B are exemplary views Display a liquid crystal display panel according to a fifth embodiment of the present invention. [Illustration of Symbols] 1: Large substrate la: Thin-film transistor substrate lb: Color filter substrate 2: Display area 3, 3 a, 3 b, 3 c, 3 d, 8: Fluid control wall 4: Space Object 5 · Liquid crystal 7, 70: Sealing material 9 · Liquid crystal display TF panel 11, 12: Contact part 18: Ultraviolet light 20: Photosensitive resin 21: Photomask 22: Exposure source 87519.DOC -26-

Claims (1)

200417772 Patent application scope: 1. A liquid crystal display panel comprising: a pair of substrates overlapping each other; a liquid crystal material interposed between the pair of substrates, and forming a display area, and wherein the pair of substrates includes a sealing material forming one of the sealing portion, and the seal is located inside the fluid part of the control wall. 2. The liquid crystal display panel according to item 1 of the patent application scope, wherein the fluid control wall is located inside the sealed portion and on the display area. 3. The liquid crystal display panel according to item 1 of the patent application scope, wherein the fluid control wall is located inside the sealing portion and outside the display area. 4 · The liquid crystal display panel according to item 1 of the patent application scope, wherein the fluid control wall is located inside the sealed portion, and is located inside and outside the display area. 5. The liquid crystal display panel according to item 1 of the patent application scope, wherein the fluid control wall is in three or more layers located inside the sealing portion and outside the display area. 6. The liquid crystal display panel according to item 5 of the patent application, wherein one or more slits are formed in one or more parts of the fluid control wall instead of the outermost surrounding wall. 7 · The liquid crystal display panel as described in claim 1 of the patent scope, wherein the fluid control wall is located on any of the pair of substrates. 8. The liquid crystal display panel according to item 1 of the patent application scope, wherein the fluid control wall is located on each of the pair of substrates. 87519.DOC 200417772 9. The liquid crystal display panel according to item 8 of the scope of patent application, wherein when the pair of substrates overlap each other, the fluid control wall located on one of the pair of substrates is positioned in a position different from that on the other substrate. The fluid control wall matches. 10. For the liquid crystal display panel of the eighth aspect of the patent application, when the pair of substrates is combined, the fluid control wall located on one of the pair of substrates does not match the position of the fluid control wall on the other substrate. The fluid control wall on each of the substrates is arranged in a labyrinth structure. 11. The liquid crystal display panel according to item 1 of the patent application scope, further comprising: a spacer for controlling a gap between the pair of substrates, the spacer being interposed in the pair of substrates, and wherein when the pair of substrates overlap each other Each of the fluid control walls has the same height as the gap between the pair of substrates, or the same spacer. 12. The liquid crystal display panel according to item 1 of the patent application scope, further comprising: when the pair of substrates overlap each other, a spacer for controlling a gap between the pair of substrates, the spacer being interposed between the substrates, and wherein When combining the substrates, each of the fluid control walls has a smaller height, which is smaller than the gap between the pair of substrates or smaller than the spacer. 13. The liquid crystal display panel according to item 1 of the patent application scope, further comprising: when the substrates overlap each other, a spacer for controlling a gap between the pair of substrates, the spacer being interposed between the pair of substrates, and wherein When the substrate is combined, the fluid control wall provides the same function as the spacer. 87519.DOC