TWI264599B - Ultraviolet curing apparatus for assembling substrates - Google Patents

Abstract

An ultraviolet (UV) curing apparatus for assembling the substrates comprises at least: a carrying means for holding the substrates, and the optical devices for providing UV light for the substrates. The optical devices at least comprise a back light unit (BLU) which is positioned at one side of the carrying means for even-illuminating UV light to the substrates. A light source and one light-guiding plate, or one lamp set and light-guiding plate assembly can be used in the back light unit of the invention, for improving the evenness of UV light illuminating from the light source or the lamp set to the substrates. Also, luminance can be greatly increased and the processing time is saved if UV spotlight is used as the light source.

Description

1264599

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ultraviolet light for a group substrate, and more particularly to an apparatus for saving power consumption and improving illumination light. ° Irradiation device, uniformity of purple and external [Prior Art] Thin film transistor flat panel display, especially thin film device (hereinafter referred to as m-LCD or liquid crystal display screen), is mainly used for arranging The enamel transistor, with appropriate capacitors, transfer pads and other components to drive the liquid crystal pixels to produce rich and beautiful graphics. Due to its slimness, low power consumption and no radiation pollution, the LCD is widely used in portable information products such as notebook computers (PDAs) and personal digital assistants (PDAs). There is even a tendency to gradually replace the CRT monitors of traditional desktop computers. A conventional TFT-LCD basically includes a lower substrate having a plurality of thin film transistors arranged in an array, pixel electrodes (pixel electrodes, ° electrodes), and mutually perpendicularly interleaved (orth〇g〇nal) scan lines or Gate line) and a signal line (data 〇r signal Hne); an upper substrate having a color filter (CF); and a liquid crystal material (numerous liquid crystal molecules) filled between the lower substrate and the upper substrate The upper substrate and the lower substrate may be transparent glass substrates. When combining, the prepared upper substrate (the upper frame glue) and the lower substrate (the liquid crystal is dripped) are aligned, and the frame glue is pre-cured by ultraviolet light irradiation (1^ cure), and then hot pressed and formed. (hot press).

TW1595F(奇美).ptd

1264599 V. INSTRUCTIONS (2) Figure 1 is a simplified schematic diagram of a conventional ultraviolet light irradiation device (UV). The conventional ultraviolet light irradiation device 1 is configured to carry a mother board 14 to be irradiated with a carrying portion 12, such as an upper substrate having CF and a lower substrate having TFTs; A root length UV lamp 16 is used as a light source, and a mirror 18 is mounted inside the device 10 to allow light to be reflected as far as possible onto the motherboard 14. The carrying portion 1 2 has a lifting device 1 22, which can drive the motherboard 14 to rise or fall according to the program requirements. First, the mother board 14 entering the irradiation device 10 first stays in the transition zone A; then, it rises to the irradiation zone C to receive the irradiation of the ultraviolet lamp tube 16. After the irradiation is completed, the mother board 14 is moved to the cooling zone. B, cooling (for example, using cold air circulation to achieve cooling); after the mother board 14 is cooled to a certain temperature, it returns to the transition zone A and is removed from the interior of the irradiation device 1 for subsequent processes. However, under the trend that the mother board of TFT-LCD is becoming larger and larger, the conventional ultraviolet light irradiation device 1 〇 will cause the following problems: (1) The larger the mother board, the lower the average illuminance value of the long ultraviolet light tube. Therefore, the longer the total irradiation energy required for the mother board is reached. (2) The larger the surface area of the mother board, the longer the length of the long UV lamp required; and the too long the tube will make the uniformity of the distribution of ultraviolet light on the surface of the mother board difficult to control, and the illumination monitoring in the process The difficulty is increasing. In addition, the difficulty in exchanging lamps is also higher. (3) For cooling systems, the longer the UV lamp is used, the more equipment used for cooling must be increased to achieve higher standards of cooling efficiency and cooling uniformity. This has also increased costs.

TW1595F(奇美).ptd 1264599 V. SUMMARY OF THE INVENTION (3) SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a purple device that uses a backlight module (Back 1 ight Uni t) to perform ultraviolet light to enhance light irradiation. Uniformity to the mother board. In addition, if the source is used, the illumination can be further improved and the process time can be shortened. According to the purpose of the present invention, an ultraviolet light irradiation method is provided, which comprises at least a carrier portion with a gamma pair mother board and an optical portion for illuminating the pair of mother boards. The optical backlight unit is disposed on one side of the carrying portion for illuminating the pair of mother boards. The backlight module includes at least one light guide plate and the light source is located at a side of the light guide plate. According to the purpose of the present invention, another ultraviolet light irradiation is provided to include: a carrying portion for carrying a pair of mother boards; and a light for illuminating the pair of mother boards, the optical portion including at least one of the backlight module carrying portions The side is for uniformly illuminating the light to the pair of mother boards. The invention comprises at least: a light guide plate combination, wherein a plurality of light guide plates are combined by η X (n and in are positive integers greater than 1); and a light source island comprises a plurality of light sources, and the light guides are connected to the light guide plates The position is such that light reaches the light guide plates. The above described objects, features, and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments and the accompanying drawings, which are as follows: external light illumination, spot light (position (UV 夂 carrying a part At least a uniform source of light, 袈, to the school, used, located in the array of backlight module m corresponding, obviously easy to fine % w呪明

1264599 V. DESCRIPTION OF THE INVENTION (4) [Embodiment] The present invention provides an ultraviolet light irradiation device that uses a backlight module (Backlight Unlt) to perform ultraviolet light irradiation to enhance the uniformity of light irradiation to a mother board. In addition, if the light source in the backlight module uses a spot light source (Sp〇t UV), the illumination can be improved and the power consumption of the light source can be saved. The following is within j. The ultraviolet light illuminating device having a slightly different 卩 structure is described in detail for the embodiments, however, the embodiments do not limit the scope of the invention to be protected. The technology of the present invention is also not limited to the modes described in the embodiments. First Embodiment Referring to Figure 2, there is shown a simplified schematic view of a 9-body: device (10) according to a first embodiment of the present invention. The ultraviolet light irradiation device 2 of the first embodiment. The carrier plate 22 is carried by the carrier portion 22, wherein the pair of motherboards 24 may include - or a plurality of panels. In the illumination device 2{), the optical portion for illuminating the 板t plate 24 includes 1 The light module 26 allows the ultraviolet light to be uniformly emitted to the mother board 24. The load-bearing portion 22 can also be provided with an raising device for spacing between the carrier portion 22 and the backlight module 26 at an appropriate distance. In the embodiment, the backlight module 26 is disposed under the motherboard 24 to make the 1 1 light from the bottom to the top. The third figure is the backlight module of the first embodiment of the present invention. The optical module 26 mainly includes a light guide plate exiting & ΐ ε) 261 and a light source 262, and the light source 226 is located in the guide well; |: /5 ? R 1 makes Λι丨, from the & Generally, the long lamp is used as the seventh place. The light source 2 62 is used to generate light, and the light source 262 is preferably covered with a mask to protect it as a light source 262. tube

1264599

V. Inventive Note (5) Two: rs p, CCFL) is a common long-type light source. V Λ Λ : Wlre) (not shown) extends from the lamp holder - the connection is beneficial. The lamp tube is filled with an inert gas, and the inside of the tube wall is coated with a phosphor. When an external voltage is applied to the electrodes on both sides of the tube, the electrons escaping from the electrode collide and excite an inert gas (such as helium) to emit ultraviolet light, which is irradiated to the phosphor coated on the inner side of the tube wall. As a light source provided to the light guide plate 261. The light guide plate 261 is used to change the path of light. Therefore, the light emitted from the light source 262 can be guided by the light guide plate 261 to reach the mother board 24. The size of the light guide plate 262 is approximately equal to the size of the mother board 24. Further, the backlight module 26 preferably further includes a reflecting plate 263 and a plurality of optical films (for example, a diffusion sheet 264). A refiecting plate 263 under the light guide plate 261 is attached with a reflective film (not shown) for reflecting the light to be leaked out of the light guide plate 261 to enhance the reflection efficiency of the light. Diffusion film 264 is used to further process light, such as concentrating, diffusing, softening, or uniform brightness. In addition to using a backlight module to enhance the uniformity of ultraviolet light illumination, the present invention can also replace a long lamp with a point source (U V s ρ 〇 t 1 a m p ). Fig. 4 is a view showing the second backlight module of the first embodiment of the present invention. The second backlight module 36 is provided with a plurality of point light sources 362 above the light guide plate 361 by a spot holder 365 to provide ultraviolet light. In addition, the backlight module 36 may preferably include a diffusion film (for example, above the light guide plate 361) and a reflection plate (for example, under the light guide plate 361) to improve the uniformity and efficiency of light.

TW1595F(奇美).ptd Page 10 1264599 V. Description of invention (6) The advantages of using point light source 3 6 2 are as follows: (1) Illumination of ultraviolet light can be increased - U60 UV lamp type U60 0 1 -46 04 Illumination is 150 w/cm2, and USIHO's point UV light source model UMX-Q-25 6BY illumination is 1 0 0 0 w/cm2 as an example. In general CCFL backlight modules, about 80% of the light is emitted from the front when light enters the light guide. If it is assumed that the point light source has lost a total of 50% from the emission to the light guide plate due to other optical design factors, the actual illumination of the point UV light source can be 1〇〇〇w/cm2 x0.5x (K8 two 400) w/cm2. Therefore, the entire illuminance can be increased from 1 50 w/cm2 to 400 w/cm2. (2) Shortening the process time - the time required for the ultraviolet light irradiation process of a pair of mother boards is: mother board loading and Time of loading + time of movement of the load bearing part (A - C - B - A) and cooling time + irradiation time. 7 As mentioned above, the actual illumination provided by the point light source is longer, the irradiation time is higher. It is bound to be shortened. If other processes are changed, the time required for the ultraviolet irradiation of a single mother board is significantly shorter than that of the surgery. (3) The cooling device of the point light source is small (can be small wind) The original person has a process), instead of using a large heat sink as in the conventional device, the ultraviolet light irradiation device of the present invention has the advantage of being small in size. Therefore, (4) Illumination monitoring is easier - in each point light source Internal gentleman sensor) to ensure The light-emitting condition, the light source is transmitted to the sense of clothing. The fiber can be used, and it can be confirmed at the time of check. (1) The point light source is small in size and easy to exchange.

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(6) Power consumption of the province—CCFL consumes electricity compared to point light sources. (7) In the case where one or several point light sources are abnormal, the abnormal light source is replaced without wasting cost. For the second embodiment, please refer to FIG. 5 for the second embodiment of the present invention. A simple schematic diagram of the ultraviolet light illuminating device (UV). The difference between the second embodiment and the first embodiment is that the ultraviolet light illuminating device 2 of the first embodiment has a set of backlight modules 26 disposed under the mother board 24 The ultraviolet light irradiation device 40 of the second embodiment has two sets of backlight modules respectively disposed on the upper and lower sides of the mother board 44 to simultaneously irradiate ultraviolet light on both sides. Similarly, the mother board 24 may include One or more panels. In the fifth figure, the first backlight module 45 is located below the motherboard 44, so that the ultraviolet light passes through the light guide plate from the bottom to the upper surface of the motherboard 44, and the second backlight module 46 is located. Above the motherboard 44, the ultraviolet light is irradiated from the top to the bottom through the light guide plate to the mother board 44. The first backlight module 45 and the second backlight module 46 can use long tubes (such as 3) The structure can also be used as a point source (as shown in Figure 4) ° In addition to the advantages mentioned in the first embodiment, the second embodiment provides a simple and time-saving method for the mother board that requires ultraviolet light irradiation on both sides, and reduces the conventional technology. The risk of substrate-to-group misalignment due to insufficient 180-degree flipping process is stable.

1264599

+ = ί i ί I. The device type proposed in the second embodiment, the invention is not limited thereto, and the ultraviolet light irradiation ί-group is located on the mother board, and the two light guide plates illuminate the mother board from top to bottom. .九, ^ 盏 -: 1 Bu ΐ 之 之 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 The purpose. Please refer to the third embodiment. EMBODIMENT 3 EMBODIMENT Fig. 6A illustrates a combination of a light guide plate and a shaped light tube in accordance with the present invention for a second embodiment of the flute-β π μ λ . The 6th 缘 缘 + 丄 丄 Long combination of light guide and point light source. In Chu - each ^ ^ ^ in the second embodiment, the light guide plate combination is composed of a plurality of light guide plates combined with η X m array 卞 yj is a positive integer in which η and m 糸 are greater than 1. , η and m can; k 堃 u 今阳... J can also be different, and there is no special limit. As for the light source, it is possible to use a long shape, a total of ~, ^ t ^ and the official can also use a point light source, j: position and the position of the light guide plate relative to Kang, 戌, " and corresponding, so that the light reaches the guide Light board 0 In Figure 6A, the complex opening potential μ is used. l Only the shape of the lamp officer 5 6 2 is full, and the position of the current position corresponds to the light guide 柘 π ] 々丄 # ^ Λ # a 5 6 2 Η u entropy ☆ 弋 庐 庐 』 1 < X boundary: ° long tube bb2 can be independent or series way to make the long tube 562 can also be set to other can be connected = mouth phoenix, 丨 j. Five;,,,,,, depending on the actual application. The light position of the light guide plate 561 is 1264599. 5. Description of the Invention (9) In Fig. 6B, a plurality of point light sources 66 2 are used as light sources, and the arrangement positions thereof are, for example, corresponding to the periphery of the light guide plates 661. Circuit control and monitoring can be performed independently or in series between point sources 662. Of course, the point light source 662 can also be disposed at other locations where the light of the light guide plate 661 can be provided, for example, on the side of the light guide plates 661, depending on the actual application. / In addition, it is to be understood by those skilled in the art that the configuration of the aperture group referred to in the third embodiment can be applied to the present invention: as described in the first and second embodiments: It is not used: ΐ定: JJ发: The month has been disclosed above in the preferred embodiment, but the spirit and scope of the invention are two;::: This j artist's without departing from the scope of protection of the invention: various Changes and retouching, so the scope defined by Honda's patent application scope shall prevail.

TW1595F(奇美).ptd Page 14 1264599 Brief Description of the Drawing FIG. 1 is a simplified schematic diagram of a conventional ultraviolet light irradiation device (UV); FIG. 2 is a view showing the ultraviolet light irradiation device (UV) of the first embodiment of the present invention. FIG. 3 is a schematic diagram of a first backlight module according to a first embodiment of the present invention; FIG. 4 is a schematic diagram of a second backlight module according to a first embodiment of the present invention; A schematic diagram showing a UV light irradiation device (UV) according to a second embodiment of the present invention; FIG. 6A is a view showing a combination of a light guide plate and an elongated lamp tube according to a third embodiment of the present invention; and FIG. 6B is a view A combination of a light guide plate and a point light source according to a third embodiment of the present invention. Schematic description 1 0, 2 0, 4 0 : ultraviolet light irradiation device 1 2, 2 2 : carrying portion 1 2 2 : lifting device 14, 24, 44: mother board 16: ultraviolet light tube 18: mirror 2 2 2 : Enhance the device 2 6 , 3 6 , 4 5 , 4 6 : backlight module

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Claims (1)

1264599 An ultraviolet light irradiation device ("v Curing Apparatus", a carrier portion for carrying a pair of mother boards; and an optical portion for illuminating the pair of mother boards, the optical portion including at least; The light source is at least one side of the light guide plate and the light source is located at a side of the light guide plate. The ultraviolet light irradiation device of claim 1, wherein the backlight module is located below the carrying portion, and the light passes through the light guide plate to illuminate the pair of mother boards from bottom to top. The ultraviolet light irradiation device of claim 1, wherein the backlight module is located above the carrying portion to illuminate the pair of mother boards from top to bottom after passing through the guide. The ultraviolet light irradiation device of the first aspect of the invention, wherein the optical portion includes a first backlight module and a second optical module respectively located below and above the carrier portion to enable light Both sides of the pair of mother boards can be illuminated simultaneously. 5. The ultraviolet light irradiation device of claim 1, wherein the light source is a long lamp (UV Lamp). J264599__-__ VI. Patent application scope 6 The ultraviolet light irradiation device according to claim 1, wherein the light source is a spot light lamp. The ultraviolet light irradiation device of claim 1, wherein the backlight module further comprises a reflector disposed on one side of the light guide plate for reflecting light onto the light guide plate. The ultraviolet light irradiation device of claim 1, wherein the backlight module further comprises at least one diffusion film disposed between the light guide plate and the pair of mother plates for uniformly diffusing from the light guide plate The light that is emitted. The ultraviolet light irradiation device of claim 1, wherein the pair of mother boards comprises a first substrate having a thin film transistor (TFT) and a second substrate having a color filter (CF). 10. The ultraviolet light irradiation device of claim 9, wherein the pair of mother boards comprise a plurality of panels. 11. The ultraviolet light irradiation device of claim 9, wherein the step of applying a sealant on the second substrate is performed before the step of pairing. 12·, UV light irradiation (uV Curing Apparatus), including TW1595F(奇美).Ptd Page 18 1264599_6. Patent application: a carrier for carrying a pair of motherboards; and an optical portion for illuminating the pair of motherboards, the optical portion including at least; On one side of the carrying portion for uniformly illuminating the light to the pair of mother boards, the backlight module comprises at least: a light guide plate combination, which is formed by combining a plurality of light guide plates in an η X m array (η and m is a natural number); combined with a light source, comprising a plurality of light sources, the light sources corresponding to the positions of the light guide plates, so that the light reaches the light guide plates. 13. The ultraviolet light irradiation device of claim 12, wherein the light sources are a plurality of point light sources. 14. The ultraviolet light irradiation device of claim 13, wherein the point light sources are respectively located on one side of the light guide plates. 15. The ultraviolet light irradiation device of claim 13, wherein the point light sources respectively correspond to the circumference of each light guide plate. 16. The ultraviolet light irradiation device of claim 12, wherein the light sources are a plurality of long lamps. 17. The ultraviolet light irradiation device of claim 16, wherein the long lamp system systems respectively correspond to intersections of the light guide plates. TW1595F(奇美).ptd Page 19 1264599 VI. Application for patents S', '~---' ' ' North as applied for the patent scope of the ultraviolet light irradiation device, the first A month module The system is located below the light, and the light is passed through the light guide plate to illuminate the pair of mother boards from the τL " The ultraviolet light irradiation device of claim 2, wherein the backlight module is located above the carrying portion, and the light is combined by the light guide plate to illuminate the pair of mother boards from top to bottom. The ultraviolet light irradiation device of claim 2, wherein the optical portion comprises a first backlight module and a second optical module, respectively located below and above the bearing portion, so that Light can illuminate both sides of the pair of motherboards simultaneously. The ultraviolet light irradiation device of claim 12, wherein the backlight module further comprises a reflector disposed on one side of the light guide plate assembly for reflecting light onto the light guide plate assembly . The ultraviolet light irradiation device of claim 12, wherein the backlight module further comprises at least one diffusion film disposed between the light guide plate assembly and the pair of mother boards for uniformly diffusing from the The light guide plate combines the emitted light. 2. The ultraviolet light irradiation device of claim 12, wherein the pair of mother boards comprises a substrate having a thin film transistor (tft) and TW1595F (奇美).ptd Page 20 1264599 :, Patent Application Scope A second substrate with a color filter (:CF:). 24. The ultraviolet light irradiation device of claim 23, wherein the pair of mother boards comprise a plurality of panels. 25. The ultraviolet light irradiation device of claim 23, wherein the step of mask coating is performed on the second substrate before the step of pairing. TW1595F (奇美).ptd第21页