TW200403454A - Apparatus and method for manufacturing polarizing film, and liquid crystal cell and method for manufacturing the same - Google Patents

Abstract

The present invention provides an apparatus for manufacturing a polarizing film of a liquid crystal display, which is not time-consuming and does not require much labor to manufacture the polarizing film and proceed the adhering operation, as required in the prior arts. The dichroism dye solution developed by Optiva Inc. is served as the ink, which is printed onto the glass or plastic substrate via the flexography device to manufacture the polarizing film. As shown in the drawing, a plate (1) having a plurality of grooves (a) is installed on the plate body (2) along the printing direction. The ink drops paralleling to the clockwise-rotating plate (1) from the distributor (3), and is applied and spreaded with a knife (4). The dichroism dye in the liquid crystal state is filled into the grooves (a); meanwhile, the knife (4) is not in touch with the plate (1), instead, with a gap therebetween, and an ink film is formed on the plate surface. Therefore, upon the glass substrate (6) secured on the table (5) passing through the region below the plate body (2), the ink film is transferred and printed from the plate (1) onto the glass substrate (6).

Description

200403454 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a method for manufacturing a liquid crystal display, and particularly to a technology suitable for coating a dichroic dye with ink to form a polarizing film. Manufacturing device and manufacturing method of polarizing film and manufacturing method of liquid crystal cell. i [Prior art] The conventional polarizing plates arranged on both sides of the liquid crystal cell are adhered with an adhesive on the outside of the qualified liquid crystal cell for panel inspection. Therefore, each of the liquid crystal cells broken by a scriber must be attached to the polarizing plate, which makes the workability very poor. In the bonding process, it is necessary to ensure the positioning accuracy or adhesion strength, prevent air bubbles or dust from being mixed, and prevent static electricity. Various steps are taken in the following steps to strengthen the adhesion of the polarizing plate and the panel, or remove it. Residual bubbles are treated with high-pressure fleas (aut oc 1 ave), etc. The combination requires a lot of time and labor. Therefore, a first object of the present invention is to provide a device for manufacturing a polarizing film for an LCD, which is suitable for the technology of coating a color paste of a dichroic dye to form a polarizing film, which makes it conventionally take a lot of time and labor to carry out It is not necessary to make and paste polarizing plates. In addition, when applying a color paste of a dichroic dye, a supramolecular complex formed by the dichroic dye is subjected to a shear force to align in a predetermined direction, and dye molecules are generated. Regular arrangement (crystallization) of polarizing performance. 200403454 The oriented supramolecular complex is ideal if it is arranged parallel to the substrate. Generally, the orientation of the oriented supramolecular complex deviates from this ideal arrangement. The supramolecular complex originally had the property that the major axis direction of the supramolecular complex was consistent in the special direction, and the arrangement direction of the supramolecular complex was determined by the surface state of the substrate; therefore, it was compounded with the supramolecular on the substrate surface. The magnitude of the surface tension acting between bodies or the elastic strain energy associated with the arrangement of supramolecular complexes varies. In the case where the surface tension of the supramolecular complex is smaller than the critical surface tension of the substrate surface, 'due to the large force between the substrate surface and the supramolecular complex', the supramolecular complex wets on the surface and spreads on the substrate surface, The supramolecular complexes are aligned in parallel on the substrate. Conversely, when the surface tension of the supramolecular complex is greater than the critical surface tension of the substrate surface, it is compared with the force between the substrate surface and the supramolecular complex. The molecular complexes do not expand on the surface but become spherical, so that the supramolecular complexes are arranged vertically on the substrate. When the surface of the substrate is not smooth, the elastic strain energy of the supramolecular complex is extremely small, that is, the supramolecular complex is aligned in a direction not subject to the elastic strain. Whether the supramolecular complex is parallel to the substrate depends on the surface condition of the substrate, the influence of moisture or gas absorbed on the substrate surface, or the critical surface tension of the actual effect of the supramolecular complex upon contact with the substrate. The relationship between the magnitude of the tension and the orientation of the supramolecular complex may not be true. 4 200403454 And the substrate may be slightly different due to different LCD manufacturers. Therefore, the supramolecular complexes coated on the substrate surface cannot obtain a uniform orientation, which deviates from the ideal arrangement. In order to obtain a uniform orientation, it is necessary to obtain the orientation anisotropy on the substrate surface (orientati〇n anis〇tr〇pi〇. Therefore, the second purpose of the color paste of the present invention to form a polarizing film technology In order to obtain the super-molecular complex and the conventionally known polarizing plate, the display quality or moisture resistance of the entire configuration is provided. Therefore, the third object of the present invention is to provide a method for applying polarizing light when applied to dichroism. The display response of the board is reduced. It is suitable for applying dichroic dyes, and it has a uniformly aligned state on the surface of the substrate. It is on the outermost surface of the LCD, so it has a great impact on the heat resistance of the display. Liquid crystal cell and its dye paste to form a polarizing film with the quality or moisture resistance, heat resistance, etc. [Special contents] In order to achieve the above purpose, the present invention is composed of the following In other words, the manufacturing device of the first-layer film of the present invention is to use the dichroic escape of the liquid crystal as the transfer type, and the aqueous solution of 枓 and 枓 is used as the color polymerization, and the color paste is applied in the printing direction. In the case of a plate with a number of micro-grooves and / or a thin film, 'then make this film self-printing 辕 g · !, transfer coating is applied to the substrate to form a polarizing film', and the above-mentioned object of the present invention can be achieved. It is preferable that the chemical formula of the aforementioned dichroic dye is as follows:

It is also preferable that the chemical formula of the dichroic dye is as follows:

6 200403454 It is also preferable that the chemical formula of the aforementioned dichroic dye is as follows:

Further, it is preferable that the dot-like convex portion is raised in the fine groove to form a concave portion and a convex portion of the groove, and the discontinuous portion of the dot-line convex portion faces the adjacent convex portion so that the adjacent convex portion faces the adjacent convex portion. The phases of the parts are staggered alternately. It is also preferable that the convex portion is formed in a raindrop shape in a plan view. Still more preferably, the convex portion is formed into a rod shape in plan view. In the method for producing a polarizing film of the present invention, a coating film for forming a dichroic dye of a concentration-transfer liquid crystal is applied to the substrate surface while applying a shear force to the substrate surface to perform a polarizing film. In the manufacturing step, a pre-processing step is set in the step of applying the aforementioned coating film liquid, and in the previous 7 200403454 processing step, orientation processing is performed on the aforementioned substrate surface θ ear as a feature. It is preferable to use a mechanical treatment that shapes the orientation treatment, u π + horse, to double the substrate surface shape to form a number of fine grooves in a certain direction. It is also preferable to use the aforementioned directional treatment as the inflammation treatment, so that the chemical treatment is applied to the orientation layer formed on the surface of the substrate to impart a chemical anisotropy. It is also preferable to give the aforementioned directional anisotropy. The method of door heterosexuality is dry in a dry style, and it is rubbl, and the wet style and the hall shape are air knifes.

It is also preferred that the aforementioned chemical is a non-aqueous, non-aqueous surfactant active solution. It is also preferable that the aforementioned chemical is a thin aqueous solution of hydrophilic polyethylene glycol (peg). It is also preferable that the chemical is a hydrophobic linear fatty acid. It is also preferred that the aforementioned chemical is a thin water-soluble organic silicone coupling agent.

The liquid crystal cell of the present invention is characterized in that a polarizing film that forms a concentration-shifting liquid crystal dichroic dye oriented in a certain direction is printed directly or indirectly on the inside of the cell. The method for producing a liquid crystal cell of the present invention is based on a patterning step of forming a transparent electrode on a cleaned substrate, applying an alignment film on the substrate, and aligning it with calcinated and rubbing methods. Steps of dispersing spacers and laminating two substrates, a step of laminating the substrates, a step of disconnecting the laminated substrates into a panel of a predetermined size, a step of injecting a liquid crystal material into the panel, and a step of inspecting the panel The polarizing plate sticking step of pasting the polarizing plate on both sides of the qualified cell. In this step, the liquid crystal cell combination 8 200403454 is formed, and a polarizing film that is printed and coated on the substrate surface and stabilized before the aforementioned orientation processing step is provided. The printing and stabilizing steps of the film do not require the aforementioned polarizing plate sticking step as a feature. In addition, in the method for manufacturing a liquid crystal cell of the present invention, in the processing step of forming the aforementioned polarizing film, the pattern of the orientation film applied on the polarizing film is made into a resist and a polarizing film outside the display field is used. It is etched as its characteristic. In the method for producing a liquid crystal cell of the present invention, in the step of forming the aforementioned polarizing film, the applied polarizing film is dried, and the polarizing film is stabilized in a BaCh aqueous solution (8 to 20 wt%). [Embodiment] An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view showing a device for manufacturing a polarizing film according to the present invention. The polarizing film manufacturing device uses an aqueous solution of a dichroic dye developed by Otiva Optiva of the United States as a color paste, and the color paste is printed on a glass or plastic substrate under a common fleXOgraphy device. Polarizing film. In the figure, 'the plate 1 having a large number of fine grooves a along the printing direction is mounted on the plate body 2', the color paste is dripped from the dispenser 3 in a direction parallel to the plate 1 which is rotating in the direction, and the blade 4 is widely used. Coated. The dichroic dye in a liquid crystal state is inserted into the fine groove a. At this time, the blade 4 is not in contact with the plate i but is provided with a slight gap to maintain it, and a thin film of color paste is formed on the plate surface. 200403454 Furthermore, when the glass substrate 6 fixed on the table 5 passes directly below the plate body 2, the thin film of this colored liquid is transferred from the plate 1 and coated on the glass substrate 6. An example of the display color and molecular structural formula of the dichroic dye is shown in Fig. 2. There are about seven kinds of dichroic dyes used in the polarizing film of the present invention. In this specification, three representative ones are shown. i

The electron density in a molecule of a dichroic dye is very different in vertical and horizontal directions, and has a slender molecular structure like a liquid B molecule. Molecules with a molecular structure that can be removed as plane oblongs are surrounded by a hydrophilic S 0 functional group and have water solubility. These dyes can be used to make polarizing films even when used alone, but they are used in combination with light absorption. It can be seen from the figure that the double bond exists in many places, and the related properties as a dye. The color paste is an aqueous solution of these dyes. If the concentration of the dye becomes higher, the sparse knives, that is, the flat parts are piled up and begin to grow, forming an intimate education.

y tr〇P1C) (concentration-shifted) liquid crystal and becomes a stick shape (°). The aggregate of liquid crystal molecules that are lifted up into a rod shape is called a "supermolecular complex", and Fig. 3 shows a schematic diagram thereof. The 3 base is located on the outside of this rod and is in contact with water. The "rod width" aspect ratio (aspect ratio) can be achieved. This ratio is presented by the use of water and hydrophilic groups and hydrophobic groups to take into account the stability of the lowest energy in the stable place to maintain equilibrium The super-knife complex increases in viscosity at higher concentrations and becomes a multi-junction 10 200403454 phase. Liquid crystals are oriented as well-known if subjected to a shear force. Therefore, the super-molecular complex of the liquid crystal is used by the polarizing film manufacturing device of the present invention. When printed, it is aligned with the printing direction, and as shown in Figure 4 (a), it is initially considered to be a scattered arrangement, and as shown in Figure 4 (b), the solvent ( For water) to evaporate, it becomes a more regular arrangement and becomes a crystalline film. Ί At this time, double bonds are present every other surface on the surface perpendicular to the printing direction. Therefore, light with an electric field in this direction is affected by this The light absorbed by the film becomes polarized light with an electric field in the printing direction. When the dried crystallized film is treated with an aqueous solution of BaCl2, in a short time, one of the molecules sor and the other of the molecules sor and one Each Ba + + ion reacts to produce a cross-linking reaction. As a result, it does not dissolve in water, and the mechanical strength increases. This makes it easy for the subsequent steps. In Figure 5, an example of a fine groove pattern is shown. Micro groove a system A photoresist is applied on the surface of the plate 1, and the dot-shaped convex portion b is raised by pattern exposure and etching to form a groove concave portion and a convex portion. At this time, the discontinuous portion c of the dot-line convex portion b is adjacent to each other. The convex portions b face each other and stagger the phases of adjacent convex portions b alternately. The depth of the micro groove a is 20 to 30 μm, the interval between adjacent convex portions b is 120 to 500 μm, and the length of the discontinuous portion c is 30. In the pattern of 5 (a), the convex part b is formed in a raindrop shape in a plan view, and the length of the short axis is 30 to 70 μm, and the length of the long axis is 100 to 100 μm. The tail The angle of the thin end before the part is preferably 8 ~ 19 °. 200403454 In the 5th (b) pattern, the convex part b is formed into a rod shape in plan view, the short axis length is 30 ~ 70μιη, and the long axis length is ~ Preferable. Second, the method for manufacturing the polarizing film of the present invention is implemented. Explanation: The polarizing film is produced by applying a coating device containing a dichroic dye spontaneously stacked into a rod-shaped supramolecular complex, and applying a printing device or a coating device while applying a shearing force, and applying the coating step. A pre-processing step is provided. In the previous processing step, an orientation treatment is performed on the surface of the glass substrate, so that the arrangement of the supramolecular complex formed by the dichroic dye when coated on the glass substrate becomes a homogeneous molecular arrangement state. The treatment is divided into: adding a directionality defect that matches the size of the supramolecular complex to the surface of the glass substrate to give directionality, and + < the chemicals that are mechanically attached to the surface of the glass substrate are given directionality deal with. sigmazone

The method of imparting directivity to chemicals is an air knife when wet. In the dry mode, the method is used. Figure 6 shows the schematic diagram of mechanical processing. The mechanical processing system is used as it is in LCD manufacturing. Zhi Jun

In the figure, the cloth 8 on the roller of the wiping device is wound, so that the roller 7-while rotating the substrate 6 in the direction opposite to the rotation direction of the roller 7, moves rayon (one side will be placed on the table.), Yon ) And so on 5, the surface of the glass substrate 6 is rubbed in a certain direction and the majority of the grooves are fine. In the case of unevenness at the interface, generally no distortion is adopted. The result is that the strain energy is very small. As a result, the molecular complex, that is, the orientation of the combination and the performance of rubbing and polarizing can be improved. The angle of the theoretical direction B of the experiment is Θ = 0 °, (the coating film is increased by about 5% at the 8th (b), and the supermolecular review on the polarizing film is not required to make the supermolecular compound more inclined to the coating direction A. However, if the table 5 is tilted, the rotation device will be generated, as in the first case, and the coated supramolecular complexes are arranged in an elastic state. Because of the interaction between the groove and the supramolecular complexes, the The orientation of the super alignment can be consistent with the direction of the groove. The direction of the supermolecular overcoating film is changed regardless of the direction of the coating film and the wiping treatment direction, but it is the same as the direction of the wiping treatment. I During the wiping treatment, it is compared with the conventional case without the wiping treatment. The maximum height is about 20%. As a result, it can be seen that the smaller the coating direction A and the wiping degree Θ, the more the polarizing performance is increased. The direction A and the wiping direction B in FIG. 8 (a) increase. 20% The I 0 = 15. Increased by about 10%, θ = 30 in Figure 8 (c). In Figure 8 (d), θ = 45 ° increases by about 5%. There are various directions depending on the user's requirements. Depending on the various combinations, the glass substrate 6 needs to be oriented at an angle. As shown in FIG. 9 (a), the coating film method by wiping is used for the case where the body is oriented obliquely to the glass substrate 6. Since it cannot be changed, it is necessary to rotate the table 5 and rotate the glass substrate 6 to the table 5. In this case, the table 5 may be tilted, and an accuracy of 0.01 mm or less is required in order not to make it. This is a huge expense in the Spins of Table 5. As shown in FIG. 9 (b), the table 5 is tilted compared to the glass substrate 6. When the glass substrate 6 is inclined,

13 200403454 The coating liquid extends beyond the glass substrate 6, so it is necessary to clean and dry the table every time as shown in Figure 9 (c). When the glass substrate 6 and the table 5 are the same size, place the glass When the table 5 of the substrate 6 is tilted and coated with the coating film liquid, the amount of liquid necessary in the width direction is different, which makes the adjustment of the outflow of the coating film liquid complicated. i

In the coating method of the present invention, the orientation of the supramolecular complex is the same in the wiping treatment direction. It is relatively simple to change the wiping treatment direction, so it is not necessary to tilt the glass substrate 6, so the above problems do not occur. In the case of mechanical treatment, when wiped with rayon-based cloth 8, the supermolecular compounding ceremony showed exactly the same molecular arrangement state. In addition, when the material of the cloth 8 is changed to rayon, nylon,? ", Polyethylene, polypropylene, Teflon (tef 1 〇η), the difference due to the polarity of the day μ β 14 shows various differences. Different orientation properties. Therefore, it is expected. Due to the difference in the composition of the coating liquid, it is necessary to flexibly use the material of cloth 8. Figure 7 shows the conceptual diagram of chemical treatment. There are two methods of chemical treatment: wet and dry. The glass substrate 6 is washed by spraying or spraying with a medicine and directionally dried with an air knife. In the wet method, the glass substrate 6 is cleaned. At this time, a household wipe 桠 · τ < sponge air knife is attached. It is also possible to remove the water.

Or use a household knife to remove water. Wet sponge with β detergent, wipe it with air after brushing. 14 200403454 Dry system: for example, the stearic acid dissolved in alcohol is penetrated into the cloth to dry it. This cloth is wound on a roller to wipe the glass substrate. 6 The cloth is made of a hard material such as medical gauze or felt (felt >). As a result, a thin chemical product is formed on the surface of the glass substrate 6 due to chemical bonding or intermolecular force. Orientation layer

I or wiping treatment to impart directional anisotropy.

As a result, the supramolecular complexes are aligned in a certain direction following the orientation of the alignment layer material formed on the surface of the glass substrate 6. Specifically, a non-ionic surfactant is diluted 1,000 times and applied to a cloth. The surface of the glass substrate 6 is wiped with this cloth, and an aqueous solution of a surfactant is applied in a certain direction. After that, it is effective to wipe with a dry cloth in the same direction. Alternatively, after the glass substrate 6 is wet-washed and washed, the above-mentioned surface active agent is applied to a liquid of 50 to 100 ppm in a wet portion or position, and is replaced with water, followed by gas. Knife removes water.

When a shearing force is applied to the gas direction when removing water, the polarization performance is improved. The surfactant is made of a hydrophobic part and a hydrophilic part. And the hydrophilic polyethylene glycol (molecular weight 200 ~ 20,000) has the same effect as the surfactant. Hydrophobic stearic acid is solid. When attached to cloth and applied, it has the same tendency as polypropylene and Teflon. 'The glass was treated with the solution of the dream-burning coupling agent, and the snail plate 6 was removed after it was removed with an air knife. 15 200403454 The liquid had the same effect. In addition, wiping the glass substrate 6 with wet treatment has the effect of imparting directivity. A cross-sectional view of a liquid crystal cell embodying the present invention is shown in FIG. An example of a simple matrix LCD such as STN is shown in the figure. The liquid crystal cell is a series of transparent electrodes on the inside of the two glass substrates 6

The S02 film 10, the polarizing film 11, and the orientation film 12 are laminated and sandwiched by a thin layer of the liquid crystal material 13 so that the sealing material 14 surrounds the periphery to form a cell airtight seal. The polarizing film 11 uses an aqueous solution of a dichroic dye as a color paste, and applies the color paste to a plate having a plurality of fine grooves along the printing direction to form a film. membrane. The liquid crystal molecules of the liquid crystal material 13 are in direct contact with the alignment film 2 and the cell gap (ceU gap) corresponding to the thickness of the 13 layers of the liquid crystal material is controlled by the diameter of the spacer 15. When the glass substrate 6 is made of alkaline glass, its alkaline components are easily dissolved in the liquid crystal, which causes a decrease in contrast and deteriorates the quality of the day. Therefore, as shown in the figure, a SiO2 film 10 is formed between the transparent electrode 9 and the polarizing film 11 or between the broken glass substrate 6 and the transparent electrode 9, and the glass substrate 6 is undercoated. Figure Π shows the flow of steps for implementing the liquid crystal cell manufacturing method of the present invention. Fig. 12 shows a plan view and a step sectional view of the liquid crystal cell manufacturing method. The liquid crystal cell is firstly deposited on the well-washed glass substrate 6 by a deposition method of 16 200403454 (deposition) or a sputtering method, etc., and an anti-name material is applied thereon to expose the mask pattern. The transparent electrode 9 is patterned by etching, and thereafter, the resist material is removed. (Step 10) After cleaning, a Si02 film 10 corresponding to the electrode pattern is applied to the transparent electrode 9 by printing. (Step 10) Next, before applying the polarizing film 1 i, a cloth with a surfactant on the lower surface of the film is subjected to a wiping treatment, and the like, and the molecular orientation of the polarizing film u is better aligned with the pre-treatment. (Step 1 〇3) Eight people printed the polarizing film U on the entire surface of the glass substrate 6 using a color paste forming a film showing polarizing property, or applied it with a coating film device that imparts other shearing force, and then Dry it. (Step 104) When applying the polarizing film 11, the polarizing film u can be dichroic by applying a shearing force using a bar coater, a slot die, a plate, or the like. The molecules formed by sex dyes are oriented in a certain direction. In order to stabilize the application and drying, it is expected that the temperature is higher than 23 and the humidity is 60%. Thereafter, the polarizing film 11 is stabilized, washed, and dried. (Step 105) The color paste of the polarizing film 11 is formed, and the solvent is water. After the coating step, even if the film is dry, it will disintegrate when contacted with water. Therefore, in order to make it insoluble in water after drying, a stabilization treatment is performed. The stabilization treatment is performed by making BaCh into an aqueous solution of 8 to 20% by weight, and immersing the polarizing film 11 in the aqueous solution for 2 to 10 seconds. Thereafter, the glass substrate 6 coated with the polarizing film 11 was washed with pure water, and the excess BaCh aqueous solution was removed. 17 200403454 The pure water was removed with an air knife from 80 ° C. to 120 °. Wide # ^ The glass substrate 6 is dried around so that the moisture of the glass substrate 6 is completely dry. ^ This step can make the glass substrate 6 fully thin with polarizing function. It is formed in a state stable in water. Next, PI printing and curing were performed. (Step 106) The PI printing method is to apply the polyimide solution diluted by the organic solvent with an aniline printing device, print on the polarizing film 11 and apply the pattern of the tp brush orientation film 12. The hardening system is added around 80 ° C to completely harden the polyimide. Then, it is etched, washed, and the solvent is dried at # A degree. 〇 Dry. (Step 107) roasting

The test solution was immersed in the polarizing film at the glass and was dissolved. The etching was performed on the glass substrate 6 in an amount of 0.2% to 0.2%, and the glass substrate 6 was rinsed with pure water to remove the non-oriented film. Thereby, only the display area of the polarizing film 11 can be simply left. Even the stabilized polarizing film can be peeled off by contact with the aqueous solution. At this time, the temperature of the medicinal solution is preferably from 20 ° C to 25 ° C.

Next, the rollers wound with cloth such as rayon are rotated, and at the same time, the rubbing treatment of rubbing the alignment film 12 in a certain direction is performed, so that the alignment directions of the liquid crystal molecules are uniform in a certain direction. (Step 108) In this process, the polymer main chain of the polyimide of the alignment film is extended in the wiping treatment direction, and the liquid crystal molecules are aligned along this extension direction. Next, on one glass substrate 6, spacers 15 for controlling the cell spacing are dispersed. (Step 10) Next, the glass substrate 6 facing the glass substrate 6 is body-attached, and the sealing material 14 for sealing is applied to the other glass substrate 6. (Step 18 200403454 step 110) Next, the glass substrate 6 coated with the sealing material 14 and the glass substrate 6 interspersed with the spacers are laminated with good accuracy, and then pressed and bonded. (111) Next, the bonded glass substrate 6 is fastened to the regular cell space by a heating press, and the sealing material 14 is heated and hardened. (Step 11 2) Secondly, a cutting operation of cutting a glass substrate with multiple chamfering into individual panels having a predetermined size is performed. (Step 113) Next, the liquid crystal material 13 is injected into the panel, and the liquid crystal material 13 or dust, dirt, and the like attached to the rear panel of the injection port are washed. (Second step: 'Foreign matter or flaws, poor disconnection, uneven spot or cell spacing between polarizing elements, poor orientation and other visual inspections or the presence of black spots or whiteness', the presence or absence of various orientation defects, dots, lines show the presence of defects Bright inspection. (Step 115) The combination of the liquid crystal cell can be completed by the above steps. The industrial application is possible. From the above description, the manufacturing apparatus of the polarizing film of the present invention uses an aqueous solution of an amphoteric dye as a color paste. The color paste is printed on the substrate to form a polarizing film, which does not need to be familiar with the production or sticking of polarizing plates, which can achieve the same production efficiency as LCD. Moreover, the polarizing film is not formed on the outside of the glass substrate and is formed on the inside as usual, so only The thickness of the glass substrate can increase the viewing distance. Also dyes such as iodine used in the conventional polarizing plate are juxtaposed due to molecules: 6 points determined in 15 steps

Seal 114) Color Dot

The wild horn shape of the color-combination-shaped lifting plate has a phenomenon of light leakage from the oblique side view. The width of the basic molecule of the dye used in the polarizing film of the present invention is 2 times that of the benzene nucleus. There is no light leakage when viewed from the side, which makes the viewing angle wider. A conventional polarizing element is produced by amplifying a dye-adsorbed film, but this amplification effect is easily recovered by thermal vibration, and is considered to have low heat resistance. However, the dye molecule of the polarizing film of the present invention uses a benzene nucleus as a skeleton, so that

Ba + + & S03 · Cross-linking and strong bonding force make it difficult to be damaged by thermal vibration and improve heat resistance. Also, the arrangement direction of the supramolecular complex has various orientations due to the surface state of the substrate, and the method of manufacturing the polarizing film of the present invention is to perform directional treatment on the surface of the substrate in a pre-processing step so as to have directional anisotropy, so that The arrangement direction of the supramolecular complexes coated on the surface of the substrate is controlled to the ideal orientation. 0 This can improve the polarizing performance of the polarizing film. Actually, the result of coating the supramolecular complexes along the direction of the directional treatment is applied. The polarizing performance It can be increased by about 20%. On the one hand, as a result of coating the supramolecular complex perpendicular to this direction, the polarization performance is reduced by about 50%. In addition, the liquid crystal cell of the polarizing film of the present invention is formed by printing a polarizing film in which a dichroic dye is oriented in one direction on the inside of the cell, so the viewing angle can be enlarged only by the thickness of the glass substrate. Further, since the polarizing film is protected by a glass substrate, a hard coating treatment for preventing defects from being applied to the polarizing plate or a static electricity prevention treatment are not required. 20 200403454 It is also possible to improve the moisture resistance and heat resistance, which are important characteristics in expanding the use of LCDs or maintaining display quality. [Brief description of the drawings] FIG. 1 is a schematic diagram of a manufacturing apparatus for implementing a polarizing film of the present invention. Fig. 2 is an example of the display color and molecular structure formula of a dichroic dye.

Figure 3 is a schematic diagram of a supramolecular complex. FIG. 4 is a diagram of the alignment state of liquid crystal molecules of a dichroic dye. Fig. 5 is a diagram showing an example of a pattern of fine grooves. Figure 6 is a schematic diagram of mechanical processing. Figure 7 is a conceptual diagram of chemical treatment. FIG. 8 is an explanatory diagram of a coating film direction and a wiping direction. FIG. 9 is an explanatory diagram of a coating film direction and a substrate installation direction. FIG. 10 is a cross-sectional view of a liquid crystal cell implementing the present invention.

FIG. 11 is a flowchart of steps for implementing the liquid crystal cell manufacturing method of the present invention. Fig. 12 is a step plan view and a step cross-sectional view of a method for manufacturing the liquid crystal cell of the present invention. [Simple description of component representative symbols] 1st edition 2st edition body 3 filler 4 blade 21 200403454 5 table 6 glass substrate a micro groove b convex part c discontinuous part 7 roller 8 cloth

9 Transparent electrode 10 Si02 film 11 Polarizing film 12 Orientation film 13 Liquid crystal material 14 Sealing material 15 Spacer 101 Washing, ITO patterning 102 Washing, Si02 film printing

103 Pre-treatment 104 Polarizing film printing, drying 105 Stabilization, cleaning, drying 106 PI printing, hardening 107 Etching, cleaning, drying 108 Wipe processing 109 Dispersing spacers 110 Seal printing 22 200403454 111 Laminating 112 Hot pressing 113 Cutting, cutting 114 LCD injection, cell washing 115 inspection

twenty three

Claims (1)

200403454 Scope of patent application: 1. A device for manufacturing a polarizing film, characterized in that an aqueous solution of a dichroic dye forming a concentration-shifting liquid crystal is used as a color paste, and the color paste is applied to the printing direction along the printing direction. A plate having a plurality of fine grooves to form a thin film, and the film is transferred and coated on a substrate from the plate to form a polarizing film. 2. The device for manufacturing a polarizing film as described in item 1 of the scope of patent application, wherein the chemical formula of the aforementioned dichroic dye is: 〇 3. The device for manufacturing a polarizing film as described in item 1 of the scope of patent application, wherein the chemical formula of the aforementioned dichroic dye is: 24 200403454 4_ The manufacturing apparatus of the polarizing film according to item 1 of the scope of the patent application, wherein the chemical formula of the aforementioned dichroic dye is: 5. The device for manufacturing a polarizing film according to item 1 of the scope of the patent application, wherein in the aforementioned fine grooves, the dot-shaped convex portions are raised to form the concave portions and convex portions of the grooves, and the discontinuous portions of the dotted linear convex portions The adjacent convex parts are arranged in a manner of 25 pairs, and the phases of adjacent convex parts are alternately staggered. Β 6 · The manufacturing apparatus of the polarizing film according to item 5 of the patent application scope, wherein the aforementioned convex parts are formed into a plan view Those in the shape of raindrops. \ 7 · The manufacturing apparatus of the polarizing film according to item 5 of the scope of patent application, wherein the convex portion is formed into a rod shape in plan view. • A method for manufacturing a polarizing film, which is a manufacturing step of a polarizing film that applies a coating liquid for forming a chromic dye, which is a concentration-shifting liquid crystal, on a substrate surface and imparts a shearing force to the substrate surface at the same time. The step of applying the aforementioned repair coating film liquid is provided with a pre-processing step. In the pre-processing step, an orientation treatment is performed on the surface of the front escape substrate. • The method for manufacturing a polarizing film as described in item 8 of the scope of patent application, wherein the orientation treatment is a mechanical treatment that deforms the shape of the surface of the substrate and forms a plurality of fine grooves in a certain direction. 〇. The method for manufacturing a polarizing film according to item 8 of the scope of the patent application, wherein the orientation treatment is a chemical treatment that imparts directional anisotropy on an orientation layer formed by coating a substrate with a chemical. . Xin • The method of manufacturing a polarizing film as described in item 10 of the scope of patent application, wherein the method of annihilating the directional anisotropy described above is performed in a dry type by wiping, and in a wet type by an air knife. 12 • The method for manufacturing a polarizing film as described in item 10 of the scope of patent application, wherein the chemical just mentioned is a dilute aqueous solution of a nonionic surfactant. 13. The method for manufacturing a polarizing film as described in item 10 of the scope of the patent application, wherein the aforementioned chemical is a thin solution of hydrophilic polyethylene glycol (peg) 26 200403454. 14. The method for manufacturing a polarizing film as described in item 10 of the scope of patent application, wherein the aforementioned chemical is a hydrophobic linear fatty acid. 15. The method for manufacturing a polarizing film according to item 10 of the scope of the patent application, wherein the aforementioned chemical is a dilute aqueous solution of an organic silane coupling agent. 1 ··· A type of liquid crystal cell, which is formed by directly or indirectly printing a polarizing film on which a dichroic dye forming a concentration-transfer liquid crystal is oriented in a certain direction. 17. · A method for manufacturing a liquid crystal cell, comprising: a patterning step of forming a transparent electrode on a cleaned substrate; applying an orientation film on the substrate; performing an orientation processing step of firing and wiping treatment; Substrate bonding step of laminating two substrates, panel breaking step of breaking the bonded substrates into a panel of a predetermined size, and a step of 'injecting liquid crystal material into the panel', and the two sides of the cell that have passed the panel inspection are pasted. The polarizing plate sticking step of the polarizing plate. In the liquid crystal combination step thus formed, Han You has printed and stabilized the polarizing film printing and stabilizing step on the substrate surface before the aforementioned orientation processing step. Those who adhered the aforementioned polarizing plate. 18. The method for manufacturing a liquid crystal cell according to item 17 of the scope of application for a patent, wherein in the processing step of forming the polarizing film described above, the pattern of the facing film applied on the polarizing film is made into an anti-corrosion coating, and * Money engraved with polarizing film outside the display area. 19. The method for manufacturing a liquid crystal cell as described in item 17 of the scope of application for patent, wherein 27 200403454 in the processing step of forming the aforementioned polarizing film, after drying the coated polarizing film, use BaCl2 aqueous solution (8 ~ 20wt%) Those who stabilized the polarizing film. 28