Source: https://patents.google.com/patent/US9229600B2/en
Timestamp: 2018-05-22 06:34:32
Document Index: 579866411

Matched Legal Cases: ['§371', 'Application No. 0611032', 'Application No. 0619172', 'Application No. 07', 'Application No. 07', 'Application No. 2008']

US9229600B2 - Multi-touch active display keyboard - Google Patents
US9229600B2
US9229600B2 US12303709 US30370907A US9229600B2 US 9229600 B2 US9229600 B2 US 9229600B2 US 12303709 US12303709 US 12303709 US 30370907 A US30370907 A US 30370907A US 9229600 B2 US9229600 B2 US 9229600B2
US20100127992A1 (en )
A touch sensitive display device includes a display fabricated on a flexible substrate, the display having a viewing surface; and a plurality of touch sensitive elements under the display, each of the plurality of touch sensitive elements including a touch sensitive sensor, the sensors being operable by touching the viewing surface of the display, and each of the plurality of touch sensitive elements having an output for outputting a signal responsive to the viewing surface being touched, wherein each of the plurality of touch sensitive elements defines a region of the viewing surface in which the touch sensitive element produces an output in response to a touch, and wherein the plurality of touch sensitive elements are arranged such that two or more substantially simultaneous touches of different regions of the viewing surface produces output signals corresponding to the two or more touches of the viewing surface.
This application is the U.S. National Phase under 35 U.S.C. §371 of International Application No. PCT/GB2007/050283, filed May 22, 2007, designating the United States and published in English on Dec. 13, 2007, as WO 2007/141566, which claims priority to United Kingdom Application No. 0611032.4, filed Jun. 5, 2006 and United Kingdom Application No. 0619172.0, filed Sep. 29, 2006.
The present invention still further provides a method of producing a touch signal responsive to two or more substantially simultaneous touches of two ore more regions of a viewing surface of a touch sensitive display device, the two or more regions corresponding to two or more different regions defined by the touch sensitive elements, the method comprising: receiving a signal from each of the touch sensitive elements corresponding to the two or more regions being touched; identifying the two or more regions being touched using the signals from the touch sensitive elements; outputting a touch signal responsive to the identification.
The second embodiment of the present invention may utilise an integrated touch-screen with individual touch-sensitive elements integrated in suitable positions on a single substrate. This might be generally advantageous for most commercial, high volume products. However, it is also possible to mount a number of discrete touch screen touch sensitive elements on separate substrate onto the back of the display. In this case standard, commercially available touch-screen components can be used. In the second embodiment the individual touch screen touch sensitive elements are mounted onto the bottom display substrate in position so as to allow the operation of the touch screen by two or more simultaneous touches of the touch screen display by the user. As shown in FIG. 9 the integration and layer sequence for each of the resistive touch screen touch sensitive elements 21, 22, and 23 is analogous to the one described above under example 1 (with reference to FIG. 5). As stated above for the integration of the individual touch screens, the assembly component of touch screens is adhered to the substrate utilizing a pressure sensitive adhesive (PSA) 6.
As is disclosed in patent number GB0515175.8 the above described configuration allows for 100% optical clarity to be achieved by incorporating a touch screen component onto the backside of the flexible display. FIG. 9 also illustrates the resistive touch screen touch sensitive elements 21, 22, and 23 that are located on the underneath side of the device. A conducting lower layer 10 is deposited over a bottom substrate 13. The bottom substrate 13 is preferably also a flexible substrate, such as polyethyleneterephtalate (PET) or polyethylenenaphtalene (PEN). Alternatively, in situations where overall flexibility of the device is not a requirement, the bottom substrate 13 may also be a rigid substrate, such as a glass substrate or a rigid plastic substrate, or a flexible substrate mounted onto a rigid carrier, such as a rigid casing. Mounting the touch-screen sensors onto a rigid support has the advantage of improving the sensitivity of the touch screen to applied pressure from the top as it prevents deformation of the lower substrate in response to applied local pressure. Generally, the choice of the bottom substrate 13 is less critical for the operation of the touch screen than of the other substrate below and can be chosen according to whether the device is used as a rigid, conformal or truly flexible device.
As described above in FIG. 9, the resistive touch screen touch sensitive elements 21, 22, and 23 are required to be adhered to a mechanically sufficiently strong base 11 in order to prevent the screen becoming damaged when touched by the user and to avoid the screens registering non-existing touches if bent.
When the user presses on the display, and therefore on one of the touch screens, the software first determines which screen has been touched and then identifies the coordinates. The software is able to identify which button the user touched and reacts accordingly by sending the associated signal to the operating system. Therefore, if the user touches ‘Shift+a’, the software will activate the associated signal for ‘shift’ and ‘a’ simultaneously.
a display fabricated on a first flexible substrate having a thickness of d2, the display having a viewing surface, a display medium and a second flexible substrate between the display medium and the viewing surface, the second flexible substrate having a thickness of d1; and
a plurality of resistive touch sensitive elements under the display, each of the plurality of resistive touch sensitive elements is discrete from each of the other resistive touch sensitive elements, the resistive touch sensitive elements being operable by touching the viewing surface of the display, and each of the plurality of resistive touch sensitive elements having an output for outputting a signal responsive to the viewing surface being touched,
wherein each of the plurality of resistive touch sensitive elements defines a non-overlapping region of the viewing surface in which the resistive touch sensitive element produces an output in response to a touch, wherein the plurality of resistive touch sensitive elements are arranged such that two or more simultaneous touches of different regions of the viewing surface produces output signals corresponding to the two or more touches of the viewing surface,
wherein each of said resistive touch sensitive elements comprises its own separate upper sensor substrate having a thickness of d3 and its own separate lower sensor substrate having a thickness of d4 and each of the upper and lower sensor substrates is flexible;
wherein the thickness of each lower sensor substrate d4 is defined as: d4>d1+d2+d3;
wherein said resistive touch sensitive elements are in a neutral axis of the touch sensitive display device;
wherein each of the resistive touch sensitive elements comprises its own separate upper conducting layer on said separate upper sensor substrate and its own separate lower conducting layer on said separate lower sensor substrate; and
wherein each of the separate upper conducting layers are mutually electrically isolated from one another and each of the separate lower conducting layers are mutually electrically isolated from one another.
2. The device of claim 1, wherein the first flexible substrate comprises polyethyleneterephtalate (PET) or polyethyleneaphtalene (PEN).
3. The device according to claim 1, wherein the display comprises a display backplane.
4. The device of claim 3, wherein the display backplane comprises an active matrix of thin-film transistors.
5. The device of claim 3, wherein the device includes a plurality of interconnections for connecting components of the device to one another.
6. The device according to claim 1 configured as a keyboard, and wherein the regions define keys of the keyboard.
7. The device according to claim 6, wherein one or more of the regions define one or more of a shift, control, alt, caps, num, function or operation key.
8. The device according to claim 6, wherein one or more of the regions define a QWERTY keyboard.
9. The device as claimed in claim 6 further comprising a region defining a mouse track-pad.
10. The device according to claim 3, wherein the display includes an electrophoretic display medium over the display backplane.
11. The device according to claim 1, wherein the output signals corresponding to the two or more touches of the viewing surface are produced simultaneously.
12. The device according to claim 1 further comprising a touch sensor controller, wherein the output of the plurality of resistive touch sensitive elements is coupled to the controller; and wherein the controller is configured to identify simultaneous touches of the regions and to output a touch signal responsive to the identification.
13. The device according to claim 1 wherein said display includes a multilayer electronic structure adapted to solution deposition.
14. The device of claim 13 wherein said multilayer electronic structure comprises an active matrix backplane of said display.
15. The device of claim 14, wherein said active matrix comprises an array of field-effect transistors comprising an organic semiconductor.
16. The device of claim 15, wherein said organic semiconductor is a solution-processed polymer semiconductor.
17. The device of claim 15, wherein said field-effect transistor comprises an organic gate dielectric.
18. The device of claim 17, wherein said organic gate dielectric is a solution-processed polymer dielectric.
19. The device of claim 17, wherein said organic gate dielectric is deposited by chemical vapour deposition.
20. The device of claim 19, wherein said organic gate dielectric is parylene.
21. The device according to claim 17, wherein said organic gate dielectric has a thickness between 200 nm and 1 micron.
22. A flexible display device incorporating a touch sensitive keyboard, said device comprising:
a resistive touch sensor behind said display surface;
wherein said resistive touch sensor has at least two non-overlapping regions each with its own upper and lower electrical contacts, the upper electrical contacts of the at least two non-overlapping regions electrically separate from one another and the lower electrical contacts of the at least two non-overlapping regions electrically separate from one another, a first of said regions being configured to define a plurality of user-operable keys, a second of said regions being configured to define at least one user-operable combination key for operation in combination with one of said plurality of keys;
wherein said device has electrical output connections which enable operation of said combination key simultaneously with operation of one of said plurality of keys to be detected,
wherein the upper electrical contact of each region of the resistive touch sensor is on its own separate upper flexible sensor substrate having a thickness of d3 and the lower electrical contact of each region of the resistive touch sensor is on its own separate lower sensor substrate having a thickness of d4; wherein the thickness of each lower sensor substrate d4 is defined as: d4>d1+d2+d3; and
wherein said resistive touch sensor is in a neutral axis of the flexible display device.
23. A flexible display device as claimed in claim 22, wherein said at least one user-operable combination key comprises a plurality of said combination keys.
24. A flexible display device as claimed in claim 23, wherein a said combination key of said at least one user-operable combination key comprises one of a shift, control, alt, caps, num, function or operation key.
25. A method of producing a touch screen component comprising a display and a plurality of resistive touch screen elements, the method comprising:
fabricating the display on a first flexible substrate, the first flexible substrate having a thickness of d2, the display having a viewing surface, a display medium and a second flexible substrate between the display medium and the viewing surface, the second flexible substrate having a thickness of d1, each resistive touch screen element comprising its own separate upper sensor substrate having a thickness of d3 and its own separate lower flexible sensor substrate having a thickness of d4;
mounting the plurality of resistive touch screen elements under the display such that each of the plurality of resistive touch screen elements defines a non-overlapping region of the viewing surface in which each of the resistive touch screen elements produces an output in response to a touch of the viewing surface, and such that two or more simultaneous touches of different regions of the viewing surface produces an output signal from an output of the resistive touch screen elements corresponding to the two or more touches of the viewing surface; and
fabricating each of said resistive touch screen elements on said lower flexible sensor substrate of the resistive touch screen element; wherein the thickness of each lower flexible sensor substrate d4 is defined as: d4>d1+d2+d3;
wherein said resistive touch screen elements are in a neutral axis of the touch screen component;
wherein each of the resistive touch screen elements comprises its own separate upper conducting layer on said separate upper sensor substrate and its own separate lower conducting layer on said separate lower flexible sensor substrate; and
wherein each of the upper conducting layers are mutually electrically isolated from one another and each of the lower conducting layers are mutually electrically isolated from one another.
26. A method of producing a touch signal responsive to two or more simultaneous touches of two or more regions of a viewing surface of a ouch sensitive display device, wherein the touch sensitive display device comprises:
a plurality of resistive touch sensitive elements under the display, each of the plurality of resistive touch sensitive elements being operable by touching the viewing surface of the display, and each of the plurality of resistive touch sensitive elements having an output for outputting a signal responsive to the viewing surface being touched,
wherein each of the plurality of resistive touch sensitive elements defines a non-overlapping region of the viewing surface in which the resistive touch sensitive element produces an output in response to a touch, and the two or more regions correspond to two or more different regions defined by the resistive touch sensitive elements,
wherein the plurality of resistive touch sensitive elements are arranged such that two or more simultaneous touches of different regions of the viewing surface produces output signals corresponding to the two or more touches of the viewing surface, and
wherein each of the resistive touch sensitive elements comprises its own separate upper conducting layer on said upper sensor substrate and its own separate lower conducting layer on said lower sensor substrate; and
wherein each of the upper conducting layers are mutually electrically isolated from one another and each of the lower conducting layers are mutually electrically isolated from one another;
receiving a signal from each of the resistive touch sensitive elements corresponding to the two or more regions being touched;
identifying the two or more regions being touched using the signals from the resistive touch sensitive elements; and
US20100127992A1 true US20100127992A1 (en) 2010-05-27
US9229600B2 true US9229600B2 (en) 2016-01-05
EP2256597B1 (en) 2009-05-26 2014-11-26 Japan Display West Inc. Information input device, information input method, information input-output device, storage medium, and electronic unit
CN102736345A (en) * 2011-04-01 2012-10-17 元太科技工业股份有限公司 Display with touch control function
US20010040554A1 (en) 1997-02-20 2001-11-15 Katsuya Nakagawa Virtual keyboard
JP2004046115A (en) 2002-05-17 2004-02-12 Toshiba Matsushita Display Technology Co Ltd Display device and method for manufacturing the same
US20040121599A1 (en) 2002-12-23 2004-06-24 Massud Aminpur Simultaneous formation of device and backside contacts on wafers having a buried insulator layer
JP2004279707A (en) 2003-03-14 2004-10-07 Tdk Corp Display device
WO2005010822A1 (en) 2003-07-24 2005-02-03 Koninklijke Philips Electronics, N.V. Robust position detection for a multi-stroke electronic brush display
US20060108579A1 (en) 2004-11-19 2006-05-25 Il-Doo Kim Low-voltage organic transistors on flexible substrates using high-gate dielectric insulators by room temperature process
US20130265280A1 (en) 2005-07-25 2013-10-10 Plastic Logic Limited Flexible touch screen display
US20060250558A1 (en) 2003-02-04 2006-11-09 Plastic Logic Limited Transistor-controlled display devices
US20080055274A1 (en) 2003-07-29 2008-03-06 Koninklijke Philips Electronics N.V. Display And Input Device
WO2005078566A1 (en) 2004-02-10 2005-08-25 Tyco Electronics Corporation Resistive touchscreen with programmable display coversheet
Bao, et al., "High-Performance Plastic Transistors Fabricated by Printing Techniques," Chem Mat. 9, 12999 (1997).
Bao, et al., "High-Performance Plastic Transistors Fabricated by Printing Techniques," Chemistry of Materials, 9, pp. 12999-21301 (1997).
Brittain, et al., "Protein crystals in the spotlight," Physics World, May 1998, p. 31.
Brittain, et al., "Protein crystals in the spotlight," Physics World, vol. 11, No. 5, May 1998, p. 31-36.
Decision to Refuse a European Patent Application on 06 765 369.1-2224 dated Jul. 24, 2012.
Decision to Refuse a European Patent Application on EP 06 765 369. 1-2224 dated Jul. 24, 2012.
European Search Report issued on EP 07733704.6 dated Apr. 6, 2009.
European Search Report issued on EP 07733704.6 dated Nov. 12, 2010.
European Search Report, issued in Application No. 07 733 704.6, dated Apr. 6, 2009, 3 pages.
European Search Report, issued in Application No. 07 733 704.6, dated Nov. 12, 2010, 6 pages.
Exam Report issued on GB 0619172.0 dated Apr. 21, 2011.
Exam Report issued on GB 0619172.0 dated Sep. 23, 2010.
Examination Report issued in Great Britain Application No. GB0619172.0 on Apr. 21, 2011 in 2 pages.
Examination Report issued in Great Britain application No. GB0619172.0 on Sep. 23, 2010 in 4 pages.
International Search Report for International Application No. PCT/GB2007/050283, Dated Feb. 15, 2008.
International Search Report from PCT/GB2006/050220 dated Dec. 22, 2006.
International Search Report issued on PCT/GB2006/050220 dated Dec. 22, 2006.
International Search Report issued on PCT/GB2007/050283 dated Feb. 15, 2008.
Rogers, et al., "Low-voltage 0.1 mm organic transistors and complementary inverter circuits fabricated with a low-cost form of near-field photolithography," Appl. Phys. Lett. 75, 1010 (1999).
Rogers, et al., "Low-voltage 0.1 mm organic transistors and complementary inverter circuits fabricated with a low-cost form of near-field photolithography," Applied Physics Letters, vol. 75, No. 7, Aug. 16, 1999, pp. 1010-1012.
Rogers, et al., "Printed Plastic Electronics and Paperlike Displays", Journal of Polymer Science, Part A: Polymer Chemistry, vol. 40, pp. 3327-3334 (2002).
Rogers, et al., "Printed Plastic Electronics and Paperlike Displays", Journal of Polymer Science: Part A: Polymer Chemistry, vol. 40, 2002, pp. 3327-3334, XP008042599.
Translated Questioning dated Apr. 16, 2013 for Japanese Patent Application No. 2008-523463.
US20100127992A1 (en) 2010-05-27 application
GB0619172D0 (en) 2006-11-08 grant
GB0611032D0 (en) 2006-07-12 grant