TWI356086B - Touch panel display device and fabricating mathod - Google Patents

Description

On August 4, 100, according to the replacement page 1356086 / VI, the invention description: [Technical field of invention]. [0001] The present invention relates to a touch screen display device and a method of fabricating the same. [Prior Art] [0002] An electronic device such as a computer or a mobile phone or the like is usually provided with an additional device or a decorative layer or the like to increase the usability and aesthetics of the electronic device. In the display field, a touch screen is disposed on the display device to form a touch screen display device, so that the user can touch the touch screen with a hand or other object to input a message to the device using the display device, thereby reducing or eliminating the user's input to other input devices ( For example, the keyboard, mouse, remote control, etc. depend on the user's operation. Please refer to FIG. 1, which is a schematic diagram of a prior art touch screen display device. The touch screen display device 100 includes a display device 102, a touch screen 101 disposed on the display device 102 in a stack, and an adhesive 106 disposed between the display device 102 and the touch screen 101 for bonding the two.

[0004] Please refer to FIG. 2 to FIG. 4 , which are schematic diagrams of each step of the manufacturing method of the touch screen display device 100 . The specific steps are as follows: [0005] 1. Providing a touch screen, a display device and an adhesive [0006] Referring to FIG. 2, a touch screen 101, a display device 102, and an adhesive (not shown) for bonding the touch screen 101 and the display device 102 are provided. The touch screen 101 is generally a thin transparent device. The display device 102 is a liquid crystal display device. [0007] Second, the application of adhesive; 1003282257-0 096117720 Form No. A0101 Page 3 / 29 pages 1356086 100 years. August 04 nuclear replacement page [0008] Please refer to Figure 3, on the touch screen 101 - The surface of the surface is coated with a certain thickness of "\J4 td adhesive 106". [0009] 3. Adhesive display device and touch screen; [0010] The surface of the touch screen 101 coated with the adhesive 106 is located on the display device 102. Then, a certain pressure is applied to shape the touch screen 101 to the display device 102. [0011] However, in the manufacturing method of the above touch screen display device, a method of bonding once, that is, a setting method is adopted, although such a process is relatively simple, sometimes partial adhesion is poor, and work reliability is lowered; and the touch screen 101 is simultaneously The alignment accuracy of the display device 102 is relatively high. During the bonding process, once the alignment deviation occurs, the adhesion of the adhesive 106 is high, and it is difficult to replace the touch screen 101 with the rework process. The display device 102 is separated. When the separation is performed, the touch screen 101 is often damaged or even broken, and the yield is reduced to some extent, and the production cost is increased. [Summary of the Invention]

[0012] In view of the above, it is necessary to provide a touch screen display device in which a touch screen is closely adhered to a display device. [0013] It is also necessary to provide a method of fabricating a touch screen display device that is high in yield and easy to rework. [0014] A touch screen display device comprising a touch screen, a display device and at least two adhesives having different adhesive strengths arranged side by side in a direction perpendicular to the thickness of the display device, the display device comprising a display surface, the at least The adhesive glue having different adhesive strength bonds the touch screen to the display surface of the display device. 096117720 Form No. 1010101 Page 4 of 29 Page 1003282257-0 1356086 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Different adhesives are used to make the touch screen and the display device, and the first adhesive positioning is first performed in the process. After the inspection is passed, the bonding is further performed, so that it is easy to find and adjust the product in the deviation in time. Yield; at the same time, the touch screen is more closely bonded to the display device, increasing its operational reliability. [0016] A method for manufacturing a touch screen display device, comprising the steps of: providing a touch screen and a display device, wherein the touch screen and the display device have a corresponding bonding area; and providing parallel arrangement in a direction perpendicular to a thickness of the display device At least two adhesives having different adhesive strengths; the at least two adhesives are side by side coated on the bonding area of the touch screen and the display device, and the thickness of the at least two adhesives is sticky thereto The strength of the combined strength is inversely proportional; the touch screen and the display device are initially pressed to make the adhesive with less adhesive strength in a bonded state, and the adhesive with high adhesive strength is in a non-bonded state. Checking the touch screen with the display device and determining that the touch screen is aligned with the display device; • aligning the touch screen with the display device to bond the at least two adhesives to the touch screen and The display device. [0017] Compared with the prior art, in the manufacturing method of the touch screen display device of the present invention, the adhesives having different adhesive strengths are used, and the adhesives are firstly laminated, and then the alignment detection is performed, and only the products with accurate alignment are continued. The styling fit makes it easy to find the product of the deviation in time, is easy to rework, is beneficial to improve the yield and reduce the cost; at the same time, because the adhesive glue with different adhesive strength is used, the touch screen is bonded to the display device. Closer, enhancing the reliability of the touch screen display device. 096117720 Form No. A0101 Page 5 of 29 1003282257-0 1356086 [0019] [10019] 100 years. August ϋ 4th shuttle page ^ Embodiments Please refer to FIG. 5, which is a touch screen display device of the present invention. Μ Schematic diagram of an embodiment. The touch screen display device 2 includes a display device 220, a touch screen 210, and a first adhesive 231 and a second adhesive 232 for bonding the touch screen 21 and the display device together. The display device 220 employs a liquid crystal display device (LCD) having a display surface 221 for displaying a picture. The touch screen 2i is generally thin and has a thin plate shape, and the touch screen 21 and the corresponding portion of the display surface 221 have a bonding area (not shown). The first adhesive 231 and the second adhesive 232 are disposed side by side in the touch screen 21 〇 and the bonding area corresponding to the display device 220. The adhesive strength of the second adhesive 232 is greater than the first The adhesive strength of the adhesive 231. The touch screen 21 is adhered to the display device 220 by the first adhesive 231 and the second adhesive 232. The display device 220 can also be a cathode ray tube (Cathode Ray). Tube, CRT) display, Light fitting Diode (LED) display, Plasma Display Panel (PDP), 〇rganic Light Emitting Diode (OLED) display, field emission display (Field Emitting Display, FED) and other types of display devices.

[0021] The touch screen 210 is most commonly a resistive touch screen and a capacitive touch screen, and of course other types of touch screens, which are not listed here. Please refer to FIG. 6 , which is a flow chart of the steps of the method for fabricating the touch screen display device of the present invention. 096117720 Form No. A0101 Page 6 / Total 29 Page 1003282257-0 [0022] 1356086 • 100 years. August 4th, nuclear 2 for ¥ [0023] Please refer to FIG. 7 to FIG. 10, which are the steps of the first embodiment of the first embodiment of the touch screen display device of the present invention. The specific steps are as follows: [0024] Step S1: providing a display device and a touch screen And the adhesive; [0025] Referring to FIG. 7, a touch screen 210 and a display device 220 are first provided, and an adhesive (not shown) for bonding the touch screen 210 and the display device 220 is provided. [0026] Step S2: coating the first adhesive and the second adhesive; [0027] Referring to FIG. 8, the touch screen 210 and the display device 220 are edge-bonded, so the first adhesive is The glue 231 and the second adhesive 232 are evenly applied to the bonding area of the surface of the touch screen 210. The thickness of the first adhesive 231 is greater than the thickness of the second adhesive 232. The thickness ratio of the thickness of the adhesive 231 to the second adhesive 232 is 1.2: 4.0:1, and the preferred embodiment is 1.5:1-3. (hi. [0028] Step S3: performing preliminary bonding;

[0029] Referring to FIG. 9, the surface of the touch screen 210 coated with the adhesive is aligned with the display surface 221 of the display device 220, and a preliminary bonding is performed to make the first adhesive 231 and the display. The device 220 displays the bond area contact of the face 221, and the second adhesive 232 remains in an initial state, i.e., only attached to the touch screen 210, while maintaining a certain distance from the display device 220. [0030] Step S4: detecting whether the alignment is accurate; [0031] detecting whether the touch screen 210 and the display device 220 are in alignment with each other or whether the design requirement is met. 096117720 Form No. A0101 Page 7 of 29 1003282257-0 1356086 .! 1:〇〇年·〇August 04th Shuttle Replacement Page [0032] Step S5a: Perform a styling fit; [0033] See Figure 10 If it is detected in step S4 that the alignment of the touch screen 210 and the display device 220 meets the design requirements accurately, then the sizing is performed, and a certain pressure is further applied to compress the first adhesive 231 to be thinned until the The second adhesive 232 is in contact with the display device 220 and produces an adhesive effect. Since the adhesive strength of the second adhesive 232 is greater than the adhesive strength of the first adhesive 231, the second adhesive 232 cooperates with the first adhesive 231 to bear the adhesive effect, and the styling paste can be achieved. The effect is that the touch screen 210 is sufficiently adhered to the display surface 221 of the display device 220. [0034] Step S6a: cleaning the residue; [0035] Thereafter, a cleaning step may also be performed to remove the residue such as the adhesive remaining in the bonding process. [0036] Step S5b: separating the display device and the touch screen;

[0037] If the touch screen 210 is detected to be in a positional deviation from the display device 220 in step S4 and the design and application requirements are not met, the touch screen 210 is separated from the display device 220. Since the first adhesive 231 having a weak adhesive strength adheres to the touch screen 210 and the display device 220, the touch screen 210 and the display device 220 are easily separated. This method maintains the integrity of the touch screen 210 and reduces damage to components. [0038] If the adhesive is still effective after the separation, the process returns to the step S3 to perform the preliminary bonding, and then the steps S3 and S4 are sequentially performed until the touch screen 210 is accurately aligned with the display device 220, and the shaping can be performed. Thereby, step S5a and step S6a are continued to complete the production steps. 096117720 Form No. A0101 Page 8 of 29 1003282257-0 1356086 100. August 4th Nuclear Replacement Page ί * [0039] Step S6b: Recoat the adhesive. - [0040] If the adhesive does not succeed after the separation in step S5b, step S6b is performed to re-apply the first adhesive 231 and the second adhesive 232, and step S3 and step S4 are sequentially performed until the The touch screen 210 is accurately aligned with the display device 220, and can be shaped and bonded to continue the steps S5a and S6a to complete the production step. [0041] When the first adhesive 231 adhesive and the second adhesive 232 used in the manufacturing method of the touch screen display device of the present invention are hot melt adhesives, the touch screen 210 and the display may be heated and replaced. Device 220 is tightly bonded. If the first adhesive 231 and the second adhesive 232 are adhesives having ultraviolet curing properties, the touch screen 210 may be closely adhered to the display device 220 by ultraviolet radiation curing bonding. The touch screen 210 and the display device 220 may be bonded by using two types of adhesives, a hot melt adhesive and an ultraviolet curable adhesive. [0042] Compared with the prior art, in the method for manufacturing the touch screen display device of the present invention, the first adhesive 231 and the second adhesive 232 having different adhesive strengths are used, and the adhesive strength is weakened first. The first adhesive 231 is subjected to preliminary bonding, and after the alignment accuracy is detected, the shaping is applied. This method can timely find the product of the deviation of the production process, and is easy to rework, which is beneficial to improving the yield and reducing the cost. At the same time, since the first adhesive 231 and the second adhesive 232 having different adhesive strengths are used, a higher adhesive force can be provided, and the touch screen 210 is more tightly bonded to the display device 220, thereby improving Work reliability. Please refer to FIG. 10 and FIG. 11 together, which is the 096117720 of the touch screen display device of the present invention. Form No. A0101, page 9/29 pages 1003282257-0 1356086; '100 years. August 04 self-nuclear replacement page A schematic diagram of a part of the steps of the second embodiment of the manufacturing method is different from the manufacturing method of the first embodiment of the touch screen display device in that the first adhesive 331 and the second adhesive are applied when the adhesive is applied The glue 332 is kept at a certain distance (as shown in FIG. 11). The pitch is 20% to 80% of the thickness of the first glue 331, so that the first adhesive 331 is squeezed when the styling is applied. The pressure is thinned and widened to fill the pitch or reduce the pitch (as shown in FIG. 12), preventing the first adhesive 331 from being squeezed to mix with the second adhesive 332, reducing the second bond. The adhesive strength of the glue 332. [0044] However, the manufacturing method of the touch screen display device of the present invention is not limited to the above embodiment, and a plurality of adhesives having different adhesive strengths may be alternately applied, and the adhesive may be first applied to the display device 420. The bonding area of 520 (shown in FIG. 13 and FIG. 14) is followed by steps of preliminary bonding, detecting alignment, and sizing, as shown in the partial steps of FIG. 12 and FIG.

[0045] Although the present invention is described by taking a method for manufacturing a touch screen display device as an embodiment, the method can also be applied to other fields, such as attaching a decorative object such as leather or cloth to the surface of a metal or ceramic workpiece, and can also be applied to the docking of the workpiece. etc. [0046] In summary, the present invention has indeed met the requirements of the invention patent, and the patent application is filed according to law. However, the above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS [0047] FIG. 1 is a schematic structural view of a prior art touch screen display device. 096117720 Form No. A0101 Page 10/Total 29 Page 1003282257-0 1356086 100 years. August 4th Nuclear Replacement g page\, [0048] FIGS. 2 to 4 are each step of the manufacturing method of the prior art touch screen display device. Schematic diagram. 5 is a schematic structural view of a first embodiment of a touch screen display device according to the present invention. [0050] FIG. 6 is a manufacturing method of a touch screen display device according to a first embodiment of the present invention. [0051]

[0054] [0054]

[0056] [0059] [0061] 096117720 Step flow chart. Fig. 7 to Fig. 10 are schematic views showing each step of the first embodiment of the method for fabricating the touch panel display device of the present invention. 11 to 12 are schematic views showing part of the steps of the second embodiment of the method for fabricating the touch screen display device of the present invention. Figure 13 is a partial schematic view showing the steps of a third embodiment of the method for fabricating the touch screen display device of the present invention. Figure 14 is a partial schematic view showing the steps of a fourth embodiment of the method for fabricating the touch screen display device of the present invention. [Main component symbol description] Touch screen display device: 1〇〇, 200 Touch screen: 210, 310, 101 Display device: 102, 220, 320, 420, 520 Display surface: 221 First adhesive: 231, 331 Second sticky Glue: 232, 332 Adhesive: 106 Form No. A0101 Page 11 / Total 29 Page 1003282257-0 loo Year. August 04th Shuttle _ Page 1356086 • , [0062] Steps: S Bu S4, S5a, S5b , S6a, S6b 096117720 Form No. A0101 Page 12 of 29 1003282257-0

Claims (1)

100^.08^ 04 1356086 VII. Patent application scope: 1 A touch screen display device, comprising: a touch screen; a display device comprising a display surface; at least two sticks arranged side by side in a direction perpendicular to the thickness of the display device The dead glue of different strengths is combined with the touch screen on the display surface of the display device. 2. The touch screen display device of claim 1, wherein the at least two adhesives having different adhesive strengths are juxtaposed between the touch screen and the display surface of the display device. The touch screen display device of claim 1, wherein the number of the adhesive is two, respectively a first dead glue and a second adhesive, and the first dead glue is dry. The intensity is greater than the dead strength of the first dead knee. 4. The touch screen display device of claim 2, wherein the two adjacent adhesives have a spacing therebetween. 5. The touch screen display device of claim 1, wherein the pitch is from 2% to 8% by weight of the adhesive strength of the adhesive strength. The touch screen display device of claim 1, wherein the at least two adhesives are applied to a peripheral region between the touch screen and a display surface of the display device. 7. The touch screen display device of claim 1, wherein the display device is a liquid crystal display, a cathode ray tube display, a light emitting diode display, a plasma display, an organic light emitting diode display or a field To emit a display. The touch screen display device of claim 1, wherein the touch screen is a resistive touch screen or a capacitive touch screen. 09611Π20 Form No. A0101 Page 13 of 29 1003282257-0 1356086 •1: August 4, 2010 Press _Page. A method of manufacturing a touch screen display device, comprising the steps of: providing a touch screen and a display device The touch screen and the display device have corresponding bonding regions; at least two adhesives having different adhesive strengths disposed side by side in a direction perpendicular to the thickness of the display device are provided; and the at least two adhesives are coated on the bonding adhesive a bonding area of the touch screen and the display device, and the thickness of the at least two adhesives is inversely proportional to the magnitude of the adhesive strength; and the preliminary touch of the far touch screen and the display device is performed to make the dry The bonding movement with less strength is in a dead state, and the dead glue with higher dead strength is in a non-adhesive state; checking the touch screen is aligned with the display device, and determining that the touch screen is aligned with the display device; The touch screen is shaped and attached to the display device such that the at least two adhesives adhere to the touch screen and the display device. The method for manufacturing a touch screen display device according to claim 9, wherein the number of the adhesive is two, respectively a first adhesive and a second adhesive, the second adhesive The dead strength is greater than the dead strength of the first dry knee. The method of manufacturing the touch screen display device according to claim 10, wherein the thickness ratio of the thickness of the first adhesive to the second adhesive partner is I·2: Bu 4.0:1 » 12 . The method for manufacturing a touch screen display device according to claim 10, wherein a thickness ratio of the first adhesive to the second adhesive is 1.5:1 to 3.0:1 〇096117720 13 . The method for manufacturing the touch screen display device according to Item 9 of the patent application scope is 1003282257-0. Form No. Α0101 Page 14 of 29; [LOOPP August 04 is replaced by positive; 4~[ wherein, There is a gap between adjacent points. The method for manufacturing a touch screen display device according to claim 13, wherein the pitch is 20% to 80% of the thickness of the adhesive having a small adhesive strength. The method for manufacturing a touch screen display device according to claim 9, wherein when detecting that the touch screen is offset from the display device, further comprising: separating the step of the touch screen from the display device and initially fitting the touch screen again The steps with the display device. The method for fabricating a touch screen display device according to claim 9, wherein the at least two adhesives are hot melt adhesives. The method for fabricating a touch screen display device according to claim 9, wherein the at least two adhesives are ultraviolet curable adhesives. The method for fabricating a touch screen display device according to claim 9, wherein the at least two adhesives are applied side by side to the bonding area of the touch screen and the display device. The method for fabricating a touch screen display device according to claim 9, wherein the at least two adhesives are applied to the bonding area of the touch screen. The method for fabricating a touch screen display device according to claim 9 is wherein the at least one of the dots is applied to the dead zone of the display device. For example, the manufacturing method of the touch screen display device described in claim 9 of the patent application is as follows: the step-by-step includes a cleaning step, and the remaining adhesive is adhered after being fixed by w. Form No. A0101 Page 15 of 29 1003282257-0