TW479211B - Touchscreen for noise rejection - Google Patents

Abstract

A touchscreen for noise rejection, wherein the touchscreen is installed in front of the LCD or CRT display that when the touchscreen receives the touch signal, it also receives the electromagnetic and RF interference from the LCD or CRT that these interference or noise will directly effect the precision of the touchscreen. According to the present invention, a noise rejection method is provided, wherein the touch screen is configured with a wiring-like antenna that the wiring can absorb the same noise as the touch signal. The touch screen controller can use the noise absorbed in the wiring to reduce the noise in the touch signal so as to reject the noise in the control signal and further improve the precision of the touchscreen.

Description

V. Description of the invention (1) The present invention is related to _ chain g and shoes with elimination liquid ”-touch screen with noise elimination, especially a source or cathode ray tube (CRT) background light (RFU Touch screen. 'Or external electromagnetic interference ⑽) and radio frequency interference. When the current touch screens that detect voltage and current types have been written on the screen by Lu Ke, Luke Qike, Xiqiao use for users to function The window = the brain is the computer on the screen. 、; Instead of using the keyboard, the user can operate the various touches mentioned above. ^ ^ M ^ ^ You, touch screen (such as the traditional current glass layer 1 shown in Figure 1, conductive film) Layer 2, linear layer 3, absolutely called _ 出 四 MEN 4 ί cladding 5 and cable 7 are connected to the controller. Control the phase-finding voltage to the four linear ends of the touch screen and measure the electrification. 2: When different points are touched on the 3 screen, the four-terminal currents will have different upright amounts. These four currents are used to determine the contact. The working principle: refer to US Patent No. 4,293,734. Ge :: The touch screen will absorb the surrounding noise and mix into these four machines, so that the touch screen cannot accurately reflect the touched position. Press type ... A kind of touch screen (as shown in Figure 2) : Electro-transparent line touch screen), a glass layer 10, IT0 guide one, an insulating layer 13, four silver wires lead edge layer 15, another ITO conductive layer 16, plastic film &quot; and a row of wires five, Description of the invention (2) 1 8 is connected to the controller. 0-5V Uniform electric field in the X-axis direction. In the spring, the lower ITO is connected to the lower ITO to measure 哕 ^ The touch screen is touched. The upper layer of ITO represents the position on the touch screen in this direction = the voltage value. After the voltage value is proportional, the control board will convert the upper layer IT0? 0_5V ns = = to the measurement position. ITO ^ ^ ^ ^ ^ 1 ^ t μ /, χ Λ # 5 Τ position, detailed working principle / measured in the other direction (Z axis). In actual work, touch the voltage measured by Wu Guo Patent No. 3,622,105 t, so that the surrounding noise is received, and this is mixed in. A A workers can not accurately respond to the touched position and the other touch pressure type five-wire touch screen mentioned above), from glass 1 = 3, Figure The non-traditional electrical layer linear sound P qk 2 0, 1 TO conductive layer 2 丄, an electrical layer 7 and a wiring 28 are connected to the controller. = 2 The two ITOs in the upper layer contact the ITO in the lower layer to measure the point 1;: value 5 :: jt ί The ratio of the position of the α axis in the direction on the touch screen: /, ^ The symbol is touched by the touched point at 60% She is looking for production in the X direction ^ After measurement, the control board converts the lower layer 1TO into a 0-5V% axis X square '^ :: tick, the lower layer IT0 is used to measure the position of the upper layer = out of the other direction (Υ axis), Detailed work j = f value to measure No. 3,798,370. In the work of the deceased "Komao Guoguo special practice in the inter-Ki work, the touch screen will absorb the noise of the fifth, the description (3), and mixed into the measured voltage, reflecting the touched position.碣 The control screen cannot be accurate. Although the three traditional touch screens mentioned in the previous example do not require users to touch and pull the screen after they can touch the screen, there are many shortcomings in fashion. The reason is that this type of touch screen c. Is caused by an isolated or cathode ray tube (CRT) background light source ?: 2: Indication Λ (, dimensional external electromagnetic interference (ΕΜΙ) and RF interference / information), or :: Inaccurate, causing the computer Misjudgment; ': will = sense 硎 士 日-a straight line, this screen is displayed; for example: when the touch screen appears on the screen or next to the screen-keyboard pattern, use:: Γ: t 的 在When the user key of the B letter is incorrectly displayed, an extra line is added on the screen: the pattern is missing, and the noise absorbed by the wire is set by the noise in the touch noise and the touch signal. Received the No. 70 king, use the noise in this controller to reach a;:; in the signal to eliminate the control signal Explanations such as 4: ^ β for technical content and structure, please refer to the "/ exploded schematic diagram of the control panel for details. Please refer to the first-type current touch screen of the present invention, mainly in Chuanxian; ::: In the present invention, touch the wire 6 with the exclusion of noise. The touch screen of the type is printed with a wire 6, and the control to the touch screen: the upper part is the same as the antenna, and the other end of the wire is 479211. 5. Description of the invention (4) Noise, so that the current touch screen can form a current touch screen with noise cancellation. The touch screen mentioned above includes: a glass 丄,-conductive film (ITO) 2, a line Linear layer (Linearization pattern) 3. An insulating layer (I so 1 a 11 on) 4. A conductive layer 5 (Silver Printing) and a row of wires (TaU) 7 connected to the control board. One end of the five silver wires is connected to the device on the touch screen through the cable 7. The other end of the four silver wires is connected to the four ends of the linear layer. The fifth = the other end of the wire is suspended by the wire lead 6. This other The cost of the antenna and wire 6 is ^ <the wire to the linear layer is printed with a new insulating layer at the same time. 1 small h plus the conductor The electrical film layer 2 may be indium tin oxide (IT〇: Indium

(Oxide); Peripheral: Linear layer 3 'is printed on the conductive film layer 2: the insulating layer 4' is printed on the conductive layer 2 described above. The four-wire silver layer 5 and the conductor 6 are printed on On the printing side: layer 4; &lt; Deng escapes on the upper side and uses the wire 6 to be located inside or outside the four-wire silver layer 5 above to cancel the noise outside the touch screen so that the controller J: The terminal extension eliminates the interference of the touch screen; use this noise to eliminate the cable 7 'is a thin-film chip transmission guide, the connection end 5 a of the silver layer 5 and the wire 6 of the disc μ are described as four wires

Page 7 The bank can be used to touch the screen. V. Description of the invention (5) The private signal is turned out. Type touch 帛. Xiao Yi constitution-five-wire type detection current or pen test current type touch screen is connected to any-kind of palm ... Thousands of main brains, or two on the top! Hand-held computer touch screen lead 6 is OK;: one? Yin 'The detection of current-type interference (EMO and radio frequency interference (RFI), m, and absorption of external electromagnetic interference), so that users can eliminate the same noise on the touch screen to reduce the same noise, reduce the external noise = write Phenomena when drawing various functions, and can be accurately sensed: selecting the bar to reduce the number of bends will not cause the computer to make a wrong judgment or identify the electronic output of the official "Please refer to" Figure 5 "for air news." It is a schematic diagram of the decomposition of the dry and control screen of the present invention. As shown in the figure: in the traditional emperor; the wire of the j package flow type touch has the same: work; = current: the current type touch control for noise elimination mentioned in Figure 4 Touch the screen to form a screen with guidance ^? =, Of which: the control screen includes: a glass layer ((^ ") 1, -3 = T: a linear layer (LineariZati〇n Printing)

Prior &quot; ^ &quot;ΐΓ;! 〇η) 4 '(Silver broadcasts 1 called V ntenna Wlre) 6 and a row of lines (Tai 1) 7 two, this touch J screen and the touch disclosed in Figure 4 above The technology of controlling the screen is different. The method of “printing the wire 6 on the glass layer 1 ® around the printed layer”, and i on the wire 6 can achieve the aforementioned function of eliminating touch screen noise in FIG. 4.

479211

Indium tin (ITO: Indium Tin The conductive film layer 2 may be Oxide oxide); on the periphery of the linear layer; the insulating layer 4 is printed on the conductive film layer 2 by printing; the printing layer is printed on the conductive layer; 2 s 5 仏 is printed on the above substrate 4 by printing. The wire Θ is printed on μ, +, ^, and 4; the soul guide fi — π &amp; I is printed on the glass layer. Behind 1, ^ V line 6 is extended to cancel the noise outside the touch screen. The puller can use this noise to eliminate the interference of the touch screen; "in order to control the cable 7, it is a The film-type sheet-shaped ^ 钤 green 5 and the connecting end 5 a of the wire 6 are connected to the four-wire silver layer screen to generate electrical signal output. So borrow: = connect, you can touch the touch screen touch screen. : Create another five-wire detection circuit. 凊 Refer to "shown in Figure 6", # 太 八 ηη μ Touch screen decomposition diagram. As shown in the figure, an additional wire 19 is printed on a five-wire electric beautiful screen, and this wire Ί QL: line voltage type touch antenna-like, the other end of the wire is connected to the touch: η, just as the-antenna absorbs the same noise as the touch screen, =, the noise absorbed by this wire on the null controller minus the noise in the touch signal ^ ^ The device forms a screen with this wire antenna There is a five-wire electric keypad for eliminating noise, and a four-wire voltage type touch screen. The touch screen mentioned above is a touch screen. Layer 1 1, a dot layer 1 2, a first r 2, 0, a first conductive film electrical layer 14, a second insulating layer 1 5, a 2 1 layer 1 3, a 5 silver wire leads a brother 2 Conductive film layer 1 6

V. Description of Invention (7)

The thin film layer 17 is connected in a row around 1 Q and connected to the touch screen through a wire 18. One of the five silver wires is connected to the upper and lower conductive ends at one end; 'empty state, the other end of the four silver wires is suspended as the ends of the wires 丄 ^ 1, 16 and the wires of the layer of the fifth wire are simultaneously Continued on the print ^ additional wires 19 and connected to the linear; 、,, and edge layer, does not add new costs in manufacturing Noise brother: ::: i: f is added in the traditional four-wire structure for use To detect the noise of the first conductive i layer 1] to reduce the noise of the touch signal; 〇xide); can be indium tin oxide (I TO: Indium Tin the dot layer 1 2), μ e &quot; on the electric film layer 1 1; is printed on or affixed to the above-mentioned first conductive layer] q, 12 2 perimeter; printed on the above-mentioned dot layer, the five silver wires are conductive ; &Gt; 1 / controller, grouped in the above; = edge: r3p: way to print five connection controls

Tin 〇: C ^ layer 16 can be-indium tin oxide (IT〇: Indium 50 lm thin film layer 1 7, pass as, Thai ηη — the cable &quot;, = = silver wire conductive layer i 4 and wire丄 9 of == and the above five to output the electrical signal generated by the touch screen;… connect the above touch screen to ^ brain, or use a laptop on a desktop computer or a notebook computer Used in the end of the day, the touch screen's wires 19 can be

Page 10 479211

1 A 1 ¾ RFI generated by dragging liquid, silver tube cancellation liquid, there will be no bent out electricity, please touch screen touch screen voltage-type crystal display noise, let the phenomenon of re-use, please refer to "Construction glass The back of the touch screen (LCD: and the noise caused by the canceler in the touch, so as not to cause the printed schematic surface as shown in Figure 7 plus printed screen to form multiple, one &quot; / η I, 7L · m, external Electromagnetic interference (EMI) and radio frequency interference (when writing, drawing or clicking various functions on the screen is time-interference, so that the lines of writing and drawing will no longer be able to accurately sense the clicked position, making the input computer have a wrong judgment or Recognition. No, it is the second five-wire voltage type of the present invention. As shown in the figure ... In the traditional four-wire voltage type, one wire 19, this wire 1 g allows a four-wire one to have a five-wire type to eliminate noise. Touch screen electrical film if? The touch screen structure is made up of-glass layer 10: guide! Stand: a dot layer 12,-the first insulation layer 1 line V dry layer] _4, a second insulation layer 丄5, a lead worker, first lead, four silver, and a thin film waste 1 7 Bu Η,-'-Τ 丄 3 7 Gland: the value of the younger brother: the conductive film layer 16 and the row, the wire 18 is composed; the wire 19 detects the noise to reduce the noise of the touch signal; the wire 19 and the printing method Hp t : Surface sweet, check from τ αa p on the back of printed on the glass layer 10 sub-connected to the fifth line of the wiring; the first conductive film layer 1 1 may be oxygen Tin 〇xide); indium tin ( ITO. Ind1Um 5 dot layer 1 2 is printed or printed on the electrical film layer; and is pasted on the first insulation layer 1 3 of the above-mentioned younger brother, which is imprinted! ^ 1 brush method printed on the above dot layer

Page 11 479211 V. Description of the invention (9) The periphery of 12; The f silver wire conductive layer 14 is a group of five connection protection lines printed on the upper layer of the insulation layer 丄 3 by printing. This line] has a connection terminal 1 4 a for outputting signals; &amp; With: Hai = film layer 1 7 is composed of a transparent film

Indium is connected to the second conductive film layer 16 above the 5-9a, which may be indium tin oxide (1buttin Oxide); = line 18, which is a thin film sheet transmission wire silver, spring V cladding 1 4 and wire] _ 9 connection terminal 丄 4 a, can output the electrical signal generated by the touch screen; after the above manufacturing is completed, a five-wire type touch screen is formed. The old one has another kind of brain that takes 4 noises. Ί Τ The control screen is connected to any kind of palmtop computer or notebook computer or desktop Thunderbolt shop owner to cancel the LCD screen (L; II: 'The Noise can be generated by the touch screen wires 19 or rppT. As a background light source for cathode ray tubes (CRT), and isolate external electromagnetic interference (EMI) and radio frequency + @ =,: = The image interference causes the &amp; qi 1x generation that the lines of the drawing and drawing will not be output, and the position of the click can be accurately sensed, so that the β Γ tiger will not cause the computer to make a wrong judgment or identification. "Touching; shown" is the sixth type of six-wire voltage formula of the present invention ^ ^ ζηί. Figure shows: in the traditional five-wire voltage type of the touch body is formed-with the elimination of noise 6-Wire Touch Spring Power £

Page 12 479211 V. Description of the invention (10) The above-mentioned touch screen electrical film layer 2 1, a halftone dot layer 2 9, a five-silver wire conductive one conductive film layer 2 6, a thin conductive wire (sixth Line) 3 is called noise measurement, and the controller uses the signal; the first conductive film layer 2 Tin Oxide); "The dot layer 22, which is on the electrical film layer 21, is constructed on a glass layer 20, a first A conductor 2 2, a first insulating layer 2 3, a linear layer 2 4, a second insulating layer 2 5, a first film layer 2 7, and a row of wires 2 8 are formed. 0 疋 in the traditional five-wire structure Adding the noise used to measure the debt to reduce the noise of the touch signal can be indium tin oxide (IT0: indi um by printing or pasting on the first conductive layer 2 3 above, It is printed on the periphery of the above-mentioned dot layer 2 2 by printing. The five silver wire conductive layer 2 is made of a wire group. The thin-film layer 27 is the first connection end with a signal wheel, which is the second conductive film. Layer 2Tin ° xide); The cable 28 is connected to the terminals 24a and 303; after the above manufacturing is completed, it becomes a six-wire type touch screen with noise cancellation.

4 'is printed on the six connection control insulating layers 23 by printing, one end of this line group is provided with 2 4a; it is composed of a transparent film; β' may be indium tin oxide (IT0: incH um film The chip-shaped transmission wire is connected to the above, and can output the electrical signals generated by the touch screen.

Wii V. Description of the Invention (Η) ^ The touch screen is connected to any kind of palm-type electric U desktop computer, the touch) Π pen display screen ⑽) or cathode ray tube ⑽τ) 3 students = And cancel external electromagnetic interference (User 1 does not); ... Write, draw, or click on the touch screen on the touch screen, and then click on the “Interference Interference” to cause the #write, the edge of the picture not to have The phenomenon of bowing, and the ability to accurately sense the electric position that is no longer present at the point of selection i: Judgment or identification of redundant errors. 'Schematic diagram of the decomposition of the output touch screen structure τ: Five-wire voltage touch screen glass On the back, a guide ^ = the above-mentioned touch-screen system that is electrically connected to the line; a line-type touch screen. A conductive film layer 21, a line 30 3, a linear layer 2 9 --- Silver wire guide: Sound m: Insulation layer 2 is added to the traditional five-wire structure to reduce the noise of the touch signal by the noise detected by 2 = conductor 3 〇Measurement signal, control The device uses the conductive layer 21 and the printing method and is connected to the sixth line of the cable; the type is printed on the first conductive film printed on the glass layer 20. 21, may be a ^

Tin Oxide); I TO: Indium tin film 2 ′ is printed or pasted on the first-guide

479211 —— V. Description of the invention G2) It is printed on the periphery of the above-mentioned halftone dot layer δ 苐 — an insulating layer 2 2 2 by printing. The five-silver wire conductive layer 2 4 #wb 1 controller, the line group is above The first edge layer 2 3py-printed five connection control &quot; Hai thin film layer 2 7 is made of a transparent thin second conductive film layer 2 6 =,

Tin 〇xide); Indium tin oxide (ITO: lndium, the wire 28, is a thin film 彳 η ± # ± human silver wire conductive layer 24 and the wire 3 0 ;, the transmission line, and the above Five 'can output the electrical signal generated by the touch screen; 4' and 3 0 3 are connected to the above structure to form one, two, and six-wire type touch screens. Eight other noises The screen is connected to any palm's head or used on a desktop computer. This type of memory is electrically isolated from the liquid crystal display 1M / touch the screen's V line 3 0 can be :: 綦 不 綦 (LCD) or cathode ray Tube (crt) background is also 隹 Λ, and eliminate external electromagnetic interference ',

D, let the use of de-force corpus u to Γ () and radio frequency interference (RF inconsistent) &gt; touch inoue writing, drawing or click on the various functions, will not double any noise interference, resulting in check f 力 月 月 ^ CURVED CURRENT # 八 4 », η. More to write ,,, and the lines of the picture will no longer have thunder # ^ S Health, and can accurately sense the click position, so that the output spoon The milk signal will not cause the computer to make a wrong judgment or identification. The description of the cigarette B is only a preferred embodiment of the present invention and is not intended to limit it; the scope of the invention is to be implemented. In this change, the equal "dagger co-modification 1" made from the crime of k β 〒 Ming patent is covered by the patent scope of the present invention. One year, page 15 479211 Schematic illustration [Schematic description] Figure 1, Department of Learning The structure of the current type touch screen is exploded. Figure 2 is the structure of the conventional four-wire voltage type touch screen. Figure 3 is the structure of the conventional five-wire voltage type touch screen. An exploded view of the structure of the first current-type touch screen of the invention. Figure 5, An exploded view of the structure of the second current-type touch screen of the present invention. Fig. 6 is an exploded view of the structure of the first five-wire voltage-type touch screen of the present invention. Fig. 7 is a second five-wire voltage-type screen of the present invention. Exploded schematic diagram of the structure of the touch screen. Fig. 8 is an exploded schematic diagram of the first six-wire voltage type touch screen of the present invention. Fig. 9 is an exploded view of the second six-wire voltage type touch screen of the present invention. Explanation of symbols] Glass layer ........ / --.-.- 1110120 Conductive film layer ........ 2, 11, 21, 16, 26 L·Linear layer ... ......... 3, 2 9 Insulating layer ......... 4, 1 3, 1 5, 2 5, 2 3 Four wire silver layer ... ........... 5, 1 4, 2 4 Leads ... 6, 1 9, 3 0 Cable ... .......... 7, 1 8, 2 8 479211

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Claims (1)

479211 VI. The scope of patent application The screen package i has 7 kinds of detection and removal of noise ~~ Included.-Broken glass layer, a conductive shoulder-type L-type touch screen, this touch, a five-wire layer and a G, g, ~ The linear layer of sand green is connected to the ^ fe of the linear layer, the other end is the same as the four ends, and the other four ends are connected to the controller. The state of the city is characterized by: The above-mentioned pilot controller suspended at one end uses the fifth line to measure the interference 'formed-with noise cancellation; and eliminates the controller noise screen. Wire-type detection and current-type touch control 2, &gt; The control panel described in item (1) of the patent application scope, wherein the wire extends with a connection end. Cancel the touch of noise 3. Touch screen as described in item 丄 or 2 of the scope of patent application, where the wire can be printed on the glass layer, cancel the noise 4, such as the scope of patent application 1 or 2 places ^ two sides. A touch screen in which the wire can be printed as a rectangular ^ Kuang line cancel noise 5. A five-wire detection voltage with a cancel noise 'total ° The touch screen is a glass layer, a first conductive Film layer, one = f screen, one insulating layer, one five silver wire layer, and one second insulating layer, the second one is composed of two first and one thin film layers, where four wires are connected to one of the linear layers. The tertiary layer is connected to the controller, one end of the fifth wire is suspended, and the other one is another device, which is characterized in that: the fifth wire connected to the above control can be detected and affected. The detected signal noise eliminates the interference of the second signal, and forms a five-wire type detection screen with two canceled noises. Six 'patent application scope Patent application scope 5 type touch screen, among them patent application scope 5 voltage type touch screen, its patent application scope 5th voltage type touch screen, its broken glass layer, a first insulation layer One and five silver ^ A thin film layer is terminated to the controller, and the device is characterized by: The suspended sixth wire is detected by the sixth line as a six-line detection with canceled noise and a canceled noise Voltage-type touch screen, the conductive film layer, a linear layer, a network cable layer and a second insulation layer, one first, of which six wires connected to the linear layer are suspended at one end, and the other end is the same as 6, such as wire detection Voltage 7, such as the other five-wire detection. 8, such as the five-line detection shape of the frame line 9,-the touch screen is composed of a dot layer, a second conductive film layer at four ends, and the other four times to receive the interference to control the use of a controller, shape 10, such as The sixth line detection voltage touch screen of the scope of patent application, among which 1 1 is the other side of the glass layer of the six line detection voltage touch screen of the patent application Noise. Item No. 5 with Noise Cancellation The wire extends with a connection end. Or in the case with cancellation noise as described in item 6, the wire can be printed on the glass layer or in the case with cancellation noise as described in item 6, the wire antenna is printed as a moment to detect noise that affects the controller. The signal noise is used to eliminate the noise of the controller No. 1 six-wire detection voltage type touch screen. The wire has a connection end. 9 or 10 has = eliminate, where the wire can be printed on glass 479211 Page 20