TW594158B - Structure of liquid crystal display and manufacture method thereof - Google Patents

Abstract

A structure of liquid crystal display and manufacture method thereof are described. The liquid crystal display is manufactured by a one-drop fill process. The display comprises a first substrate, a second substrate, a conductive pattern layer, a black matrix layer, a liquid crystal layer and an ultraviolet type of seal glue. The metal pattern layer is made of indium tin oxide and formed on the first substrate. Therefore, the metal pattern layer is a transparent layer allowed the ultraviolet light passing through. The ultraviolet type of seal glue is pro-cured by the ultraviolet light from the first substrate direction to the seal glue, and then cured by a heating process. Hence, the liquid crystal pollution problem is reduced.

Description

594158 _ Case number 92 V. Description of the invention (1) Technical field to which the invention belongs

Special structure The present invention relates to a structure and a manufacturing method of a liquid crystal display, and relates to a liquid crystal display and a manufacturing method having an improved liquid crystal pollution situation. " Scoop prior art video camcorders, reed-type electricity With the advancement of optical technology and semiconductor technology, liquid crystal display devices (Liquid Crystal Display; LCD) have been widely used in electronic display devices. Because of its advantages such as high daylight quality, small size, light production, low voltage drive, low power consumption, and wide application range, the liquid crystal display is used in portable TVs, mobile phones, media green speakers, and technical applications Brain display desktop displays, and consumer electronics or computer products such as projection televisions. Cathode Ray Tube (CRT) has been replaced by mainstream. The main body of a general liquid crystal display is a liquid crystal cell, which is mainly composed of two transparent plates and a liquid crystal sealed between the substrates. At present, liquid crystal displays are mainly thin film transistor (Thin F 1 m Transistor; TFT) liquid crystal displays, and the production of general thin film transistor liquid crystal displays can be roughly divided into thin film transistor array (TFT Array) manufacturing processes, Color filter manufacturing process, liquid crystal display unit assembly (LCC e 1 1 A ssemb 1 y) manufacturing process, liquid crystal display module (Liquid Crystal Module; LCM) manufacturing process.

594158 __ Case No. 92100203_ 仁 _Modified jade and description of the invention (2) When making a thin film transistor liquid crystal display, the thin film transistor array process is used to make a thin film transistor substrate, on which the thin film transistor array and display electrodes Arrays are in a one-to-one relationship with each other. The color filter process is used to make a color filter. It has a color filter layer composed of color filter arrays of different colors and a black matrix (Black Matrix) surrounding the color filter. . In the subsequent assembly process of the liquid crystal display unit, a thin film transistor substrate and a color phosphor plate are assembled in parallel, and a liquid crystal cell is formed by a gap between the two. Then, a liquid crystal material is injected into the liquid crystal cell, and the injection port of the liquid crystal cell is sealed to complete the production of the liquid crystal display unit. The LCD display module attaches a polarizer (pollarizer) to the LCD panel and connects the driver chip (Driver 1C) with the circuit of the LCD panel. Then it is combined with a reflector or a back light, and the module is manufactured after a preliminary test (Burn_ιη). Basically 'each display electrode and each color filter layer mentioned above is in a corresponding relationship', and the light-shielding layer covers the thin film transistor and the metal lines connecting different thin film transistors. Thin-film transistor liquid crystal display, using individual thin-film transistor pairs corresponding to 594158 _m 9 ^ 〇2〇3_ year, month, day, amendment five, description of the invention (3) ~~ ~-the display electrode voltage is applied to determine the liquid crystal molecules The direction of the crystal axis makes the local liquid crystal appear transparent or opaque. The color displayed by the color filter is used to determine the color of the transmitted light. For example, when the light passes through the red color filter, it displays red. The complex colors are mixed by the two primary colors (red, blue, and green) to produce a full-color image. The traditional liquid crystal injection process is very cumbersome, so the liquid crystal dropping (One Drop Fi11; ODF) process can effectively simplify the production process. The use of qdf process generally uses UV-curable frame adhesives to ensure process yield. However, in actual production, it is often found that the liquid crystal display panel produced by the 0DF process is contaminated with frame glue, which reduces the production yield and causes a bottleneck in production. Therefore, 'how to effectively improve the problem of liquid crystal pollution can not only improve the yield rate of production', but also increase the yield and thus increase the profit. It is hoped by the liquid crystal display manufacturer Wei: The content of the invention is less than the above background of the invention. The liquid crystal of the liquid crystal display panel produced by the 0DF process is contaminated, thereby reducing the production yield and causing a bottleneck in production.

594158-^ ~ ^ Case No. 92100203 l Five Λ Description of the Invention (4) One of the purposes of the present invention is to improve the hardening effect of ultraviolet rays to improve the liquid crystal pollution. Another object of the present invention is to improve the yield and yield of liquid crystal pollution. __ The hardening of the plastic frame adhesive is used to improve the production. One purpose of the invention is to use the transparent circuit of indium tin oxide (Indium Tin IT0) to improve the hardness of the UV-curable frame adhesive and improve the liquid crystal pollution. Case. According to the manufacturing method described on the first substrate provided by the display / night crystal display, the present substrate or the second substrate is oxidized to provide a first light or the second substrate is adhered to the lamp, and is completely plated by ultraviolet glue, and the second substrate of indium tin circuit , Like. Use it, and then use one of the substrates together. The first substrate hardening frame is hardened. The second substrate ′ is a liquid crystal display using liquid crystal display ”and has a liquid crystal, and therefore has a UV-curable liquid crystal dripping area with a shielding layer. Use true and pre-harden the glue in the middle direction. The first series mentioned above is the color filter series, which is a kind of crystal droplets to make purple. Use the frame frame process to empty the outside of the device to prevent glue coating. The process of hardening the vertical discharge line and then making a substrate-based optical layer glass liquid crystal dropping process to produce a thin film transistor includes the following steps. First, the ability of the surrounding drive lines to transmit light. Furthermore, leakage around the display is prevented from being spread on the first substrate or the second liquid crystal is applied on the first substrate, the first substrate and the second substrate. Finally, a UV-curable frame adhesive was used for about 30 seconds, and the frame was a thin film transistor-based glass substrate using a thermal curing process.

Page 10 External 丄 V. Description of the invention ^ —— ^ The heterostructure, the liquid crystal substrate, the masking layer, is formed by the ability of. It happened around. Ultraviolet electrical pattern layer line-hardening type external line hardening uses a heat-hard first substrate to cross the optical layer of glass. _Electrical power ^ ΐ ΐ can be said that a liquid crystal display process of the liquid crystal display is dry ^ Γ dropping process to produce thin-film transistor liquid crystal Display = Contains 1-substrate, conductive pattern layer, second layer in the J-th layer, and UV-curable frame adhesive. The conductive pattern t is on the 々π μ substrate, which is made of a tin material around the liquid crystal display. This has a UV light transmission layer on the second substrate to prevent the display; it is light. phenomenon. The liquid crystal layer uses a liquid crystal dropping process to form a line-hardening type frame adhesive, which adheres the first substrate and the second substrate, so that a space for storing the liquid crystal layer is formed between the guide and the shielding layer. The ultraviolet sealant is irradiated with a purple sealant from the direction of the first substrate for about 30 seconds using an ultraviolet lamp to pre-harden the ultraviolet curing sealant, and the curing process is about 60 minutes to completely cure the sealant. The above-mentioned system is a thin film transistor glass substrate, and the second substrate is a color glass substrate. The peripheral circuit described above is the circuit of the liquid crystal display. It is located on the non-display area of the display panel. So Ben? The manufacturing method of the liquid crystal display structure of the liquid crystal dropping process of the month 'effectively improves the pre-curing of the frame adhesive1 and thus effectively eliminates the problem of panel contamination. Old (again., Day and night). Implementation. When using the ODF process, it is usually adopted.

594158

Liquid crystal display panels produced by UV-curable frame adhesives are targets for display panel contamination. In order to ensure that the liquid crystal of the process yield is contaminated, the problem has become a liquid crystal display. However, it is often found that how to effectively improve the important spirit of the liquid crystal display panel manufacturer. In the following, the use of chrome 'line is not shown for illustration: and the preferred embodiment of the present invention, and a person skilled in the art who understands the present invention in detail will understand the preferred embodiment of the present invention which can be taught by the present invention. T-shirts' technology can be changed and modified, which is within the spirit and scope of the present invention. Refer to the first figure for a schematic cross-sectional view of the partial structure of the frame adhesive position of the TFT display of the present invention. As shown in the figure, the TFT liquid crystal display has a first substrate and a second substrate, both of which are made of transparent glass. Generally speaking, in the production of LCD screens, the wiring of the conductive pattern layer 1220 is hidden in the light-shielding layer i4〇 and the wiring around the first substrate, that is, the TFT substrate, is often (Cr), Ming \ A1), copper (Cu), and other metal wiring. The above-mentioned peripherals are peripheral driving circuits of the liquid crystal display, which are located on the area of the display panel. The Mingzhi TFT liquid crystal display uses the process of liquid crystal dropping and the coating process of n-but liquid crystal. Because of this, the frame bakelite of the present invention uses a UV-curable frame adhesive to improve the convenience during production. The outside line accelerates the pre-hardening of the frame rubber. After the conductive pattern layer i 2 0 on the 110th is formed,

Page 12 594158-~~ — Case 5 Tiger 92100203 ____ J | _3_Amendment ______ V. Description of the invention (7) A light-shielding layer 1 4 0 is formed on the two substrates 1 50 0, and the second substrate 1 50 is colored dense Substrate for light layer. Then, the sealant is coated around the substrate, and the liquid crystal 160 is dropped in the middle of the substrate by the ODF process. Finally, the two substrates are laminated using a vacuum assembly, and then irradiated with ultraviolet light for about 30 seconds, and the frame adhesive is completely dried and shaped in the step of thermal curing. The present invention is not limited to a substrate for applying a sealant and dripping a liquid crystal. Using the liquid crystal dropping method of the invention. · Cheng Zhi's liquid crystal display manufacturing method, the substrate to be coated with the sealant and the liquid crystal dropping can be selected according to the actual needs, that is, the first substrate or the second substrate can be selected separately for Frame adhesive coating and liquid crystal dropping process. At the same time, the present invention is not limited to the first application of the sealant coating or the liquid crystal dropping, or the simultaneous application of the sealant coating and the liquid crystal dropping, as long as the two processes are completed, a vacuum assembly process is performed to place the first substrate. It is pressure-bonded to the second substrate and exhausts the internal gas. Then, the ultraviolet light is irradiated for about 30 seconds to pre-harden the sealant, and then heat-cured for about 60 minutes to completely harden the sealant. Since the light-shielding layer ι40 is used around the TFT liquid crystal display to avoid light leakage in backlight tubes and misaligned areas, the light-shielding layer 1400 is used to completely seal the periphery. Therefore, in the 0DF process, due to the use of UV-curable frame adhesive 'When you want to use a UV lamp for pre-curing the frame adhesive, the UV will not pass through the light-shielding layer 14 0 through the second base plate 1 50 and enter The frame adhesive is hardened in the middle of the substrate, especially in the case of TFT liquid crystal displays with a size of less than 7 inches. The light-shielding layer 140 is already small, and it should not be shrunk. Therefore, only the 110 side of the first substrate can be selected to irradiate ultraviolet rays to harden the sealant. in tradition,

594158 __ Case No. V. Description of the invention (8) 92100203 ± ___ On the day of the month, the conductive pattern layer 220 composed of the lines around the first substrate 1 丨 0 is modified. Because metal wiring such as chrome aluminum copper is used, it is formed into a mesh. Zongzi shape. Refer to the second figure 'for a schematic front view of the sealant position of the liquid crystal display of the present invention in the first figure. It is clear from the figure that if the conductive pattern layer 22 is formed of metal wiring, a grid-shaped light-transmitting area will be formed, which is an area composed of an unshielded area in the middle of the mesh circuit. The area covered by the frame adhesive 2 3 0 is located in these light-transmitting areas, and the light-shielding layer 24 0 is located below the frame adhesive 2 3 0 and the conductive pattern layer 2 2 0, which will completely cover the application of the frame adhesive 2 3 0 Cloth area. The left side of the figure is a schematic position of the liquid crystal 26. The present invention is further to make the work of UV pre-curing the frame adhesive more thorough. Therefore, all the metal circuits around the liquid crystal display of the present invention are changed to use ITO material for production. Because of the circuit formed by the IT0 material, It is a transparent circuit that allows ultraviolet light to pass through. Therefore, the conductive pattern layer 2 2 0 is transparent in places where the circuit does not pass and where the circuit passes. It can improve the frame when using traditional metal circuits for ultraviolet irradiation. The glue cannot be completely irradiated with ultraviolet light, and cannot be effectively pre-cured. Therefore, when the liquid crystal contacts the sealant, the sealant is corroded by the liquid crystal and the liquid crystal is contaminated. The invention utilizes the light transmittance of the ITO material to effectively improve the phenomenon of incomplete pre-curing of the frame adhesive during the DF process, which not only improves the quality of the liquid crystal display of the present invention, but also accelerates the production process and reduces the defective rate. Provides an important contribution to the production of LCDs using the ODF process. As understood by those skilled in the art, the above is only a comparison of the present invention.

Page 14 594158 Case No. 92100203 Amendment V. Description of the Invention (9) The preferred embodiment is not intended to limit the scope of patent application for the present invention; all other equivalents are completed without departing from the spirit disclosed by the present invention Alterations or modifications shall be included in the scope of patent application described below. Φ

Page 15 594158 _: Case No. 92100203_ Year Month Revision _ Schematic Brief Description of the Preferred Embodiment of the Invention The following figures are supplemented in the explanatory text for a more detailed explanation, of which: The first figure is the A partial cross-sectional view of the position of the frame adhesive of the liquid crystal display; and the second view is a front view of the position of the frame adhesive of the liquid crystal display of the present invention in the first view. Description of drawing symbols 110 First substrate 120 Conductive pattern layer 130 Frame adhesive 140 Light-shielding layer 150 Second substrate 160 Liquid crystal 220 Conductive pattern layer 230 Frame adhesive 240 Light-shielding layer 2 6 0 Liquid crystal

Page 16

Claims (1)

594158 _; _ Case No. 92100203_ Year Month Amendment _ 6. Application for Patent Scope 1. A liquid crystal display manufacturing method for a liquid crystal dropping process, which uses the liquid crystal dropping process to produce a thin film transistor liquid crystal display, wherein the manufacturing method includes at least: Provide a first substrate having a conductive pattern layer formed by the surrounding circuits of the liquid crystal display, wherein the conductive pattern layer is composed of an indium tin oxide material, wherein the first substrate is a thin-film transistor glass substrate; The second substrate has a shielding layer for preventing light leakage around the display, wherein the second substrate is a color filter glass substrate; and an ultraviolet curing frame adhesive is used to coat the first substrate. Top; drop a liquid crystal in the middle of the first substrate; use a vacuum assembly process to adhere the first substrate and the second substrate together; use an ultraviolet lamp to pass through the conductive pattern layer from the direction of the first substrate, Irradiate the UV-curable frame adhesive for 30 seconds to pre-harden the UV-curable frame adhesive; and use heat Of the process, and baked 60 minutes to complete curing of the sealant. 2. The manufacturing method according to item 1 of the scope of patent application, wherein the above-mentioned peripheral circuit includes a peripheral driving circuit of the liquid crystal display, which is located in a non-display area of the display panel. 3. The manufacturing method according to item 1 of the scope of patent application, wherein the above-mentioned vacuum assembling process includes exhausting gas between the first substrate and the second substrate. Page 17 594158 ______ Case No. 92100203 _ year month day __ Six, the scope of patent application issued. 4 · The manufacturing method according to item 1 of the scope of the patent application, wherein the above-mentioned steps are coated on the first substrate with an ultraviolet curable frame adhesive, and can be coated on the first substrate with an ultraviolet curable frame adhesive. Steps on the two substrates are replaced. 5. The manufacturing method according to item 1 of the scope of patent application, wherein in the above step, the step of dropping liquid crystal in the middle of the first substrate can be replaced by the step of dropping liquid crystal in the middle of the second substrate. 6. A liquid crystal display structure of a liquid crystal dropping process, which uses the liquid crystal dropping process to produce a thin film transistor liquid crystal display, wherein the liquid crystal display structure includes at least: a first substrate; a conductive pattern layer formed on the first substrate; Above, it is formed by the surrounding circuit of the liquid crystal display, wherein the conductive pattern layer is made of indium tin oxide material; a second substrate; a shielding layer is located on the second substrate to prevent the surrounding of the display from occurring. The phenomenon of light leakage; a liquid crystal layer formed using a liquid crystal dropping process; and an ultraviolet curable frame adhesive, which adheres the first substrate and the second substrate, so that a space is formed between the conductive pattern layer and the shielding layer to store the liquid crystal Page 18 594158 ______ Case No. 92100203_Year_Month__ Sixth, the patent application layer layer, wherein the ultraviolet curing type frame adhesive uses an ultraviolet lamp from the direction of the first substrate, passes through the conductive pattern layer, and irradiates The UV-curable frame adhesive is pre-cured for a predetermined time, and the heat-curing process is used to completely harden the frame adhesive. 7. The liquid crystal display structure according to item 6 of the scope of patent application, wherein the first substrate comprises a thin film transistor glass substrate. 8. The liquid crystal display structure according to item 6 of the patent application scope, wherein the second substrate comprises a color filter glass substrate. 9. The liquid crystal display structure according to item 6 of the scope of the patent application, wherein the peripheral circuit includes a peripheral driving circuit of the liquid crystal display and is located in a non-display area of the display panel. 10. The liquid crystal display structure according to item 6 of the scope of the patent application, wherein the above-mentioned ultraviolet-curable frame adhesive adheres the first substrate and the second substrate, and then uses a vacuum assembly process to exhaust the gas in the space. . 1 1. The liquid crystal display structure according to item 6 of the scope of patent application, wherein the predetermined time is 30 seconds. 12. The liquid crystal display structure according to item 6 of the scope of patent application, wherein the heat curing process is performed for 60 minutes for baking. Page 19