TW583457B - Assembling device and method for substrate of liquid crystal display - Google Patents

Abstract

The present invention provides an assembling device and method for substrate of liquid crystal display for assembling two glass substrates of liquid crystal display, which includes: an upper fixture for holding a panel; and, a lower fixture for holding another panel; wherein, the assembling device is to arrange the two glass substrates of liquid crystal display in a crossed manner within a vacuum chamber, and the upper and lower fixtures both have a flat bottom to press on the two glass substrates of liquid crystal display, so as to form a uniform clearance between the two glass substrates of liquid crystal display.

Description

M3457

[Field of the Invention] An assembly device, especially in a vacuum environment. The present invention relates to a liquid crystal display substrate, and more particularly to an assembly device for a liquid crystal display substrate. The liquid crystal display substrate is assembled. [Previous Technology] L-Electricity: Advances in technology, especially portable electronics in everyday life. Z __The demand for small, low-power displays is growing day by day. Six days of thunder, T1 (LiBquici Crystal LCD) is less expensive, lighter, and non-luminous due to its Eh & M-type displays, such as m-type displays, are often used in this type of electronic products, and have even gradually replaced the traditional cathode-ray tube displays. A liquid crystal display is basically composed of a polarizer, a glass capacitor, and a liquid crystal material. The polarizer is sandwiched between polarizing materials. The glass electrode is vacuumed on a high-quality flat glass surface; it refers to a conductive metal oxide film. The electronic conjugate motion ability of the molecular poles in the liquid crystal material is easily polarized when subjected to the action of an external electric field, resulting in the phenomenon of induced dipolaI, thereby enabling the liquid crystal display to display image. In the conventional method for manufacturing a liquid crystal display, two glass substrates each having a display electrode are cleaned first, and then an alignment film (alingnment film) is formed on the substrate. By applying a sealing material by screen printing or the like, a sealing pattern can be formed on one of the two glass substrates, and an ultraviolet curing type resin (μ resin) can be applied. On it. Spacers by spraying

583457 5. Description of the invention (2) (spacers) are fixed on another substrate to form a gap. After the two substrates are positioned and aligned in the atmosphere, they are temporarily fixed together by the U V resin. After pressing the two substrates to form a gap of a predetermined thickness, the sealing pattern is hardened to form a so-called empty cell (empty ce 1 1). After that, the liquid crystal is filled into the empty cell by the pressure difference and capillary phenomenon in a vacuum chamber, and the opening of the seal pattern is sealed with resin. Then the entire cell is washed and tempered. The unit is completed. In the aforementioned manufacturing process, since the substrates are aligned and then pressure is applied to form a gap of a predetermined thickness, sliding may occur between the two substrates and affect the alignment between the two substrates. Therefore, the margin of the pixel electrode (pixei) on the substrate must be increased to accurately align the pixel electrode and the black array (b 1 ac k matr i X) on the two substrates, but this design However, its opening ratio is reduced. In addition, the light irradiated by the towel during the process of forming the substrate will cause a substrate temperature / gradient. If the sealing pattern is hardened in this state, the temperature gradient will cause the substrate to bend when the substrate is cooled. The uneven gap between the two substrates is caused. Such non-uniform gaps cause a uniform display, which is a serious problem for liquid crystal displays, especially for large-sized liquid crystal displays. Therefore, in US Patent No. 6,222, 60 3 B1 (hereinafter referred to as Patent No. 603) issued to Salai et al. On April 24, 2001, " a liquid crystal display having a double seal Device manufacturing method (Method 〇f Manu ^ ctuping Liquid Crystal Display Device With a Double Seal) " discloses a method for manufacturing a liquid crystal display device, which uses liquid droplets

Page 5 583457 V. Description of the Invention (3) '-, Filled LCD' This patent is hereby incorporated by reference. For this manufacturer! ’A sealing pattern is formed on a substrate and has a line of sealing material. The liquid crystal system is dropped on the substrate, and a vacuum chamber is aligned with another substrate to form a gap of a predetermined thickness. Then, the vacuum chamber is returned to a high pressure, and the sealing material is hardened and tempered to form a liquid crystal display. In the method disclosed in the f 6 03 patent, the device and method for fixing the substrate in the vacuum chamber are not disclosed. In the traditional manufacturing process, the base unit is positioned and carried by a vacuum chuck. However, in Patent No. 603, the conventional vacuum chuck cannot be applied to this manufacturing method because it needs to be aligned in a vacuum chamber and pressure is applied to the substrate. Furthermore, some prior art uses electrostatic chucks to move and align the substrate. However, the electrostatic chuck cannot provide a proper force to fix the substrate, and the electrostatic chuck may cause damage to the circuit pattern on the substrate. As mentioned above, there is a need to provide a suitable device to fix and move the liquid crystal display B panel in a vacuum chamber in a non-static and non-vacuum pressure manner to manufacture the liquid crystal display unit or panel. [Summary of the Invention] The main object of the present invention is to provide a fixing device for a liquid crystal display substrate, which can stably align and press two liquid crystal display panels under a vacuum environment, thereby forming a liquid crystal display unit. A secondary object of the present invention is to provide a method for assembling a liquid crystal display substrate, which can stably align two liquid crystal display panels in a vacuum environment.

583457 V. Description of the invention (4) Apply pressure together to form a liquid crystal display unit. In order to achieve the above object, the present invention provides a liquid crystal display substrate assembly device, which is used for assembling two liquid crystal display glass substrates, which includes: an upper clamp for clamping one of the two liquid crystal display glass substrates; and a lower clamp for The other two of the two liquid crystal display glass substrates are clamped; wherein the two liquid crystal display glass substrates are arranged in a staggered manner, and can be precisely aligned by the upper and lower clamps. According to another aspect of the present invention, a liquid crystal display substrate assembly device, wherein the upper and lower clamps each have a flat bottom so as to apply pressure to the two liquid crystal display glass substrates so as to form a uniform gap between the two liquid crystal display glass substrates. . The invention also provides a method for assembling a liquid crystal display substrate, which is used for assembling two liquid crystal display glass substrates. The steps include: providing a first glass substrate in a longitudinal direction of the liquid crystal display whose size is larger than the display size of the liquid crystal display ; Providing a second glass substrate with a size larger than the display ruler of the liquid crystal display in the lateral direction of the liquid crystal display and staggered with the first glass substrate so that in the longitudinal direction, the glass substrate is out of the second A glass substrate, and a second glass substrate protruding from the first glass substrate in the lateral direction; a seal pattern is formed on one of the first and second glass substrates to surround the liquid crystal; A spacer is formed on at least one of the second glass substrate and the second glass substrate to determine the thickness of the gap between the two glass substrates; a first fixture is provided for holding the protruding edge of the first glass substrate; and a first Two clamps for holding the protruding edge of the second glass substrate; in a vacuum chamber, the first and second

583457

A clamp 'aligns the first and second glass substrates; and applies pressure on the first and second glass substrates by the first and second central tools' so as to form a uniform gap between the two glass substrates; and The sealing pattern is hardened and the excess portions of the two glass substrates are cut to form a liquid crystal display unit. In order to make the above and other objects, features, and advantages of the present invention more obvious, the preferred embodiments of the present invention will be described in detail, and the accompanying drawings will be described in detail below. Reference is now made to Figs. 1 and 2 which show a fixing device j 0 of a liquid crystal display substrate according to a first preferred embodiment of the present invention. The liquid crystal display substrate is fixed in a & vacuum chamber! 6 to assemble two glass substrates 22a, 22b of the liquid crystal display. The fixing device has two pairs of clamps 12⑴ for fixing the upper glass substrate 22a and the lower glass substrate 22b, respectively. Please refer to FIG. 2, which shows the configuration of the two glass substrates. As shown in Fig. I, the two pairs of jigs 12, 14 support the two glass substrates 22a, 22b by hook-shaped tips 18, 20. Therefore, the two glass substrates 22a, 22b are larger than the conventional glass substrate, that is, larger than the display & of the liquid crystal display, so as to provide sufficient space to be placed on the hook-shaped tips 18, 20. The two glass substrates 22a and 22b must have a staggered arrangement so that the hook-shaped tips 18 and 20 can lose the two liquid crystal display substrates 22 and 22b without interfering with each other. In other words, as shown in the figure, in the longitudinal direction, the size of the upper glass substrate 22a is slightly larger than that of the liquid crystal display, so that the hook-shaped tip 18 can clamp the upper glass substrate 2 2a without causing Affects the display size of the liquid crystal display. In the lateral direction, 583457 V. Description of the invention (6) The size of the lower glass substrate 2 2 b is slightly larger than the lateral size of the liquid crystal display, so that the hook-shaped tip 20 can grip the lower glass substrate 22 b without affecting The display size of the liquid crystal display can prevent the two hook-shaped tips 18 and 20 from interfering with each other. In addition, the fixing device 10 of the present invention can also be applied to a method for manufacturing a liquid crystal display disclosed in the aforementioned U.S. Patent No. 6, 2 2 2, 6 0 3 B1. When applied to the method described in the Patent No. 603, the liquid crystal 24 is dropped on the lower glass substrate 2 2 b, the spacer 25 is attached to the upper glass substrate 22 a, and has a continuous line状 的 SEAL PATTERN 26. The two pairs of clamps 12, 14 of the fixing device 10 of the present invention can clamp the two glass substrates 22a, 22b. Therefore, those skilled in the art will understand that the two pairs of clamps 12, 14 can accurately The two glass substrates 22a and 22b are aligned. In addition, the two pairs of jigs 12, 14 have a substantially flat bottom, and can apply pressure to the two glass substrates 22a, 22b, so as to form a gap of uniform thickness between the two substrates and fill the liquid crystal with In the gap between the two substrates, the LCD cell is completed. Hereinafter, a method of assembling a liquid crystal display unit (LCD cel 1) of the fixing device 10 of the liquid crystal display substrate will be described. First, two glass substrates 22a, 22b are provided for manufacturing a liquid crystal display. Taking a thin film transistor liquid crystal display (Thin Film Transistor Liquid Crystal Disp 1 a y) as an example, a thin film transistor and a color filter will be formed on the two glass substrates 2 2 a and 2 2 b, respectively. A continuous seal pattern is formed on one of the two glass substrates by a dispenser (diSpenser) or the like. The pattern is, for example, a UV resin (u 1 trav i ο 1 et curing).

P0M07.ptd Page 9 583457 V. Description of the invention (7) type resin). In addition, a liquid crystal droplet 24 is dropped on the thin film transistor substrate, surrounded by the sealing pattern, and a plurality of the color filter substrates are formed by spraying or other known methods. The spacer 25 is fixed on the color filter substrate. Generally, §, the liquid crystal display has a rectangular display area, and the two glass substrates are slightly larger than the display size of the liquid crystal display in the longitudinal and lateral directions of the liquid crystal display, respectively, thereby making the two pairs of fixtures of the fixing device 10 12, 14 can hold the two glass substrates 22a, 22b. Those skilled in the art will understand that the two glass substrates can be stably clamped in the two pairs of jigs 2 and j 4 ′, and the two glass substrates can be accurately aligned by the two pairs of jigs 12 and 14.

Qi. After that, the air in the vacuum chamber 16 is evacuated to form a vacuum environment, and the two glass substrates 22a, 22b are pressed with the two pairs of clamps 12, 14, thereby forming a uniform gap between the two substrates, and The gap is surrounded by the sealing pattern and is filled with liquid crystal. The seal pattern is then hardened and the excess portion of the substrate is cut away to form a liquid crystal display unit. = Although the fixing device 10 according to the present invention is suitable for a vacuum ring group: = two glass substrates of a liquid crystal display, the fixing device 10 Hr assembles the substrate of the liquid crystal display under a #vacuum environment.

-ϋν Consider Figures 3, 4, and 5 which show the assembly I of a liquid crystal display substrate according to another embodiment of the present invention. The assembly device is two wedge-shaped sockets 32a, 32b pivotally connected to each other. The wedge bearing > 3 9, 4 1 and I have two ejectors 3 8 and 4 0, each of which is pivotally connected to one block for carrying the liquid crystal display substrate 22 & 22b. As shown in the figure, when the glass substrate 2 2 of the liquid crystal display is to be assembled &

583457 V. Description of the invention (8) At 22b, the rain substrates 22a, 22b are respectively placed in the two wedge-shaped seats 32a, 3 2b, and the two substrates 22a, 22b respectively have liquid crystal droplets 24, spacers 25, and seals Pattern (not shown). The two wedge-shaped sockets 32a, 32b are provided with sealing strips 3 4, 36, and can be pivoted to form a chamber (as shown in Fig. 4). The chamber can be evacuated through an opening 4 2 in the holder 3 2 a to form a vacuum chamber. As shown in FIG. 5, the four ejectors 38, 40 are pushed out, and the glass substrate is pressed by the pivotally connected stoppers 39, 41 to form a gap of uniform thickness between the two substrates, and The liquid crystal is filled in the gap between the two substrates to complete the liquid crystal display unit (LCD Cel 1). -Although the present invention has been disclosed with the aforementioned preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the appended patent application.

583457 Brief description of the drawings [Illustration] Fig. 1 is a schematic cross-sectional view of a substrate fixing device for a liquid crystal display according to a preferred embodiment of the present invention. Fig. 2 is a schematic diagram above the liquid crystal display substrate assembled by the fixing device of the preferred embodiment shown in Fig. 1. FIG. 3 is a schematic cross-sectional view of a liquid crystal display substrate assembly device according to another preferred embodiment of the present invention. Fig. 4 is a schematic sectional view of a vacuum chamber formed by the assembling device of the preferred embodiment of Fig. 3; FIG. 5 is a schematic cross-sectional view of a liquid crystal display unit formed by the assembling device of the preferred embodiment of FIG. 3. [Illustration of drawing number] 10 Fixing device for liquid crystal display substrate 14 Fixture 12 Fixture 16 Vacuum chamber 20 Hook tip 22b under glass substrate 2 5 Spacer 18 Hook tip 22a on glass substrate 2 4 Liquid crystal 26 Sealing pattern 3 0 Splitting device 32a wedge bearing 32b wedge bearing 36 38 40 weather strip 3 4 weather strip ejector 3 9 stopper ejector 41 stopper

P0M07.ptd Page 12 583457 Brief description of drawings 42 Opening P01-107.ptd Page 13

Claims (1)

5831 Report 1. A liquid crystal display substrate assembly device for assembling two liquid crystal display glass substrates, comprising: an upper clamp for clamping one of the two liquid crystal display glass substrates; and a lower clamp for clamping The other of the two liquid crystal display glass substrates; wherein the two liquid crystal display glass substrates are arranged in a staggered manner and can be precisely aligned by the upper and lower clamps. 2. The device for assembling a liquid crystal display substrate according to item 1 of the scope of patent application, wherein the upper and lower clamps each have a flat bottom so as to apply pressure to the two liquid crystal display glass substrates so as to form a space between the two liquid crystal display glass substrates Even gap. 3. The liquid crystal display substrate assembling device according to item 2 of the patent application scope, wherein the assembling device is operated in a vacuum chamber. 4. A liquid crystal display substrate assembly device for assembling two liquid crystal display glass substrates, comprising: two holders, each of which has accommodated the two glass substrates, and can be moved relatively to form a closed chamber; a pusher, It is used to push the two glass substrates and apply pressure to the two glass substrates so as to form a uniform gap between the two liquid crystal display glass substrates. P01-107.ptd Page 14 583457 VI. Patent application scope 5. The liquid crystal display substrate assembly device according to item 4 of the patent application scope, wherein the two sockets have a generally wedge-shaped outer shape, and the ends of the wedge are pivotally connected to The closed axes are formed by rotating the axes of each other. 6. The liquid crystal display substrate assembly device according to item 4 of the scope of the patent application, further comprising an exhaust device for forming the closed chamber into a vacuum chamber. 7. A method for assembling a liquid crystal display substrate, comprising the steps of: providing a first glass substrate having a size larger than a display size of the liquid crystal display in a longitudinal direction of the liquid crystal display; In the lateral direction of the display, its size is larger than the display size of the liquid crystal display, and it is staggered with the first glass substrate so that in the longitudinal direction, the first glass substrate protrudes from the second glass substrate, and A second glass substrate protrudes out of the first glass substrate in a lateral direction; a first jig is provided to lose the protruding edge of the first glass substrate; ... Shangshen provides a second cooler 'for clamping Protruding edges of the second glass substrate; and accurately aligning the first and second glass substrates by the first and second jigs. 2. Assembly method of liquid crystal display substrate according to item 7 of the declared patent scope, Page 15 583457 6. Scope of patent application Including the steps: The first and second clamps are used to press the first and second glass substrates to form a uniform gap between the two glass substrates. 9. The method for assembling a liquid crystal display substrate according to item 8 of the scope of the patent application, further comprising the steps of: forming a sealing pattern on one of the first and second glass substrates to surround the liquid crystal; A spacer is formed on at least one of the second glass substrates to determine the thickness of the gap between the two glass substrates; wherein the alignment and the pressing steps are performed in a vacuum chamber, and the seal is applied after the pressing. The pattern is hardened to form a liquid crystal display unit. 10. The method for assembling a liquid crystal display substrate according to item 9 of the scope of patent application, further including steps: P01-107.ptd Page 16