311 results about "Resistive touchscreen" patented technology

Resistive touchscreen system has substrate and coversheet with first and second conductive coatings. The substrate and coversheet are positioned proximate each other such that the first conductive coating faces the second conductive coating. The substrate and coversheet are electrically disconnected with respect to each other in the absence of a touch. First set of electrodes is formed on the substrate for establishing voltage gradients in first direction. Second set of electrodes is formed on the coversheet for establishing voltage gradients in second direction wherein the first and second directions are different. Controller biases the first and second sets of electrodes in first and second cycles and senses a bias load resistance associated with at least one of the sets of electrodes. The bias load resistance has a reference value associated with no touch. A decrease in the bias load resistance relative to the reference value indicates two simultaneous touches.

Resistive touchscreen system has a substrate with a first conductive coating having a first resistance and a coversheet with a second conductive coating having a second resistance. The substrate and coversheet are positioned proximate each other such that the first conductive coating faces the second conductive coating. The substrate and coversheet are electrically disconnected with respect to each other in the absence of a touch. First and second sets of electrodes for establishing voltage gradients in first and second directions are formed on the substrate and the coversheet, respectively. A controller biases the first and second sets of electrodes in two different cycles. The controller senses a bias current associated with at least one of the first and second resistances. The bias current has a reference value associated with no touch. An increase in the bias current relative to the reference value indicates two simultaneous touches.

Conductive polymers can be used as the signal carrying layers in resistive touch screens. Using conductive polymers can allow higher sheet resistance than is conventionally obtained using indium tin oxide while maintaining electrical continuity and durability of the layer. Higher sheet resistance can also lead to reduced errors and reduced power consumption, as well as better optical transmission. Sheet resistance may be limited on an upper end by desired data sampling rates. Also disclosed are resistive touch screens that employ a conductive polymer on both the topsheet and bottom substrate and that can be operated with the use of conventional electronics.

A 5-wire touch screen system includes a touch screen (10) including a wiper (11) and a resistive layer (16) aligned with the wiper and first (UL), second (UR), third (LR), and fourth (LL) resistive layer contacts, wherein a touch on the screen presses a small portion of the wiper against the resistive layer, producing a touch resistance (RZ) between them at a touch point on the resistive layer. The wiper and various contacts are selectively coupled to first (VDD) and second (GND) reference voltages, respectively, to generate an analog touch voltage (VZ) at the touch point. The wiper and various contacts are selectively coupled to an analog input (56) and a reference voltage input of an ADC (48) for converting the touch voltage (VZ) to a digital representation. Analog voltages (VX) and (VY) at the touch point are converted to corresponding digital representations by the ADC.

A touch screen comprising: a) a substrate; b) a first conductive layer located on the substrate; c) a flexible sheet comprising a substantially planar surface and integral compressible spacer dots formed thereon, each integral compressible spacer dot having a base closest to the planar surface and a peak furthest from the planar surface; and d) a second conductive layer located on the surface of the flexible sheet, wherein the second conductive layer comprises a conductive mesh pattern and the peaks of the integral compressible spacer dots are located in non-conductive openings in the conductive mesh pattern; wherein when a minimum required activation force is applied to the touch screen at the location of one of the compressible spacer dots, the compressible spacer dot is compressed to allow electrical contact between the first and second conductive layers.

A resistive touch screen includes a transparent substrate defining a touch area; a first layer of conductive material formed on the transparent substrate and extending over the touch area; an electrical connection to the first layer of conductive material; a transparent flexible cover sheet; a second layer of conductive material formed on the transparent flexible cover sheet, the cover sheet being mounted in a spaced apart relationship from the substrate, whereby a touch in the touch area results in an a electrical contact between the first and second layers of conductive material at the point of touch; an electrical connection to the second layer of conductive material; and at least one of the first or second layers of conductive material having a variable conductivity.

A resistive touchscreen having a programmable display, such as an emissive display matrix of organic light-emitting diodes, or a reflective electronic paper display, built into the coversheet. The touchscreen may be of any resistive type, including 4-wire, 5-wire, and diode 3-wire. A touch / display system is thus provided in which there is little or no degradation of the displayed image due to image transmission through the internal touch sensor components, and in which the internal touch sensor components may be constructed of opaque materials.

The invention provides a method and a device for identifying touch gestures. The method comprises the following steps: orderly acquiring coordinate data of at least four points in a gesture track detected on a resistive touch screen; determining angles rotated by the acquired points relative to the acquired first point and comparing the angles rotated by the various points relative to the first point by utilizing the coordinate data; and determining that the touch gestures are rotary motion or telescopic motion according to an acquired comparison result. Aiming at the defect that the resistivetouch screen cannot detect respective positions of two points when the two points are touched, and can only detect a track formed by an intermediate point between the two points, the method determines the angels rotated by the acquired points relative to the acquired first point and determines a motion trend according to the angles rotated by the various points relative to the first point so as to skillfully identify the two-point touch gestures on the resistive touch screen.

A resistive type touch panel includes a first substrate aligned to be facing a second substrate. The first substrate includes a first conductive layer and the second substrate includes a second conductive layer. A plurality of spacers each having a polygonal column shape are disposed between the first and second substrates in predetermined positions. The geometry and center-to-center spacing of the spacers minimizes detection of a distributed activation force applied to one of the first and second substrate while still providing sensitivity to detect concentrated application of an activation force to one of the first and second substrates.

Methods and apparatus are provided for an apparatus for inputting data. The apparatus comprises a detection circuit for providing a first reference voltage to a first and a second electrode of a first conductive layer of a resistive touch screen and providing a second reference voltage to a first and a second electrode of a second conductive layer of the resistive touch screen. The detection circuit maintains the first and second reference voltages under quiescent conditions and when the first and second conductive layers couple together. The method includes applying substantially equal voltages to the first and second electrodes of the first conductive layer of the resistive touch screen. Substantially equal voltages are applied to the first and second electrodes of the second conductive layer of the resistive touch screen. Approximately zero current is conducted in the first and second conductive layers under quiescent conditions.

A resistive touchscreen system comprises a substrate, a coversheet and a controller. The coversheet comprises a first conductive coating and the substrate comprises a second conductive coating. The substrate and coversheet are positioned proximate each other such that the first conductive coating faces the second conductive coating, and the substrate and coversheet are electrically disconnected with respect to each other in the absence of a touch. The controller is configured to (a) identify a multiple touch state when the substrate and coversheet are electrically connected with respect to each other at at least two touch locations, (b) to detect, over time, a plurality of apparent touch coordinates, (c) identify two possible X coordinates and two possible Y coordinates associated with at least one of the apparent touch coordinates, and (d) identify coordinate locations of two touches based on the apparent touch coordinates and the two possible X and Y coordinates.

A resistive touch screen includes a transparent substrate defining a touch area; a first layer of conductive material formed on the transparent substrate and extending over the touch area; an electrical connection to the first layer of conductive material; a transparent flexible cover sheet; a second layer of conductive material formed on the transparent flexible cover sheet, the cover sheet being mounted in a spaced apart relationship from the substrate, whereby a touch in the touch area results in an a electrical contact between the first and second layers of conductive material at the point of touch; an electrical connection to the second layer of conductive material; and at least one of the first or second layers of conductive material having a variable conductivity.

A touch screen comprising: a) a substrate; b) a first conductive layer located on the substrate; c) a flexible sheet comprising a substantially planar surface and integral compressible spacer dots formed thereon, each integral compressible spacer dot having a base closest to the planar surface and a peak furthest from the planar surface; and d) a second conductive layer located on the surface of the flexible sheet, wherein the second conductive layer comprises a conductive mesh pattern and the peaks of the integral compressible spacer dots are located in non-conductive openings in the conductive mesh pattern; wherein when a minimum required activation force is applied to the touch screen at the location of one of the compressible spacer dots, the compressible spacer dot is compressed to allow electrical contact between the first and second conductive layers.

A touch screen driver that can be used with a resistive touch screen includes an input / output module that supplies at least one input signal to at least one of a plurality of input / output ports of the touch screen and that generates at least one output signal, in response to the at least one input signal, and in accordance with at least one control signal. A controller module generates the at least one control signal and that generates a position signal representing a resolved position in accordance with a plurality of contemporaneous touches of the resistive touch screen.

The invention discloses a method and a device for controlling a move event on a resistive touch screen, which are used for realizing inertial sliding on the resistive touch screen and expanding the application range of the resistive touch screen. The method comprises the following steps of: acquiring first information of a starting point of the move event and second information of an ending point of the move event; determining a moving speed of a target project in the move event according to the first information and the second information; acquiring a desired distance corresponding to the determined moving speed according to the proportional relation between the moving speed and the desired distance of the inertial sliding; and moving the target project according to the desired distance.

Systems and methods for providing an auxiliary user input device (101, 501, 601) for use with a mobile electronic device (181, 681). The methods involve: releasably securing (703) a first device (101, 601) comprising a resistive touch screen (103, 603) to a second device (181, 681) comprising a capacitive touch screen (183, 683), in a position wherein a primary plane of the capacitive touch screen is substantially aligned in parallel and subjacent to a primary plane of the resistive touch screen; establishing (705) a communication link (641, 643) between a first communications interface (617, 619) in the first device and a second communications interface (657, 659) in the second device; generating resistive touch screen output data in response to user input received (707) at the resistive touch screen; and communicating (713) the resistive touch screen output data from the first device to the second device via the communication link.

The invention discloses a method and a system for using a plurality of resistive touch screens to realize multi-point input, wherein the method is used for a mobile phone provided with at least two blocks of resistive touch screens and includes the following steps of detecting each block of resistive touch screen on the mobile phone; and when detecting that any touch screen is touched, then obtaining the contact coordinate information of the touched touch screen. The system includes: a plurality of blocks of resistive touch screens, a control unit and a driving circuit unit. A plurality of the resistive touch screens are mutually connected in parallel and accessed to the driving circuit unit; the driving circuit unit is connected with the control unit and used for converting a voltage signal generated when the touch screens are touched to the coordinate information of the contact and transmitting the information to the control unit; and the control unit is used for receiving the coordinate information of the contact. Compared with the prior art, the invention can use the low-cost resistive touch screens to realize the input of multi-point touch and combination action, cause user operation to be simpler and more convenient and improve use convenience.

An improved touch screen has enhanced optical performance and aesthetic quality. The sense electrodes and other traces on the touch screen are made less invisible to the user by substantially filling the space between the conductive traces or electrodes with isolated regions that match the light transmission characteristics of the electrodes. In capacitive and resistive touch screens, the space between ITO electrodes and other traces on the substrate is substantially filled with ITO to match the electrodes. The space between electrodes is preferably filled with isolated regions of ITO formed in a pattern. The isolated regions in the pattern may be shaped and the electrodes notched to create non-linear spaces to further reduce the visibility of the pattern. Further, the space between ITO traces can be filled with irregular-shaped ITO regions to further reduce the visibility of the space.

An apparatus including: a first resistive screen extending in a first direction and a second direction; a second resistive screen extending in the first direction and the second direction and separated from the first resistive screen; a first reference resistor; a voltage source configured to apply a voltage across a series combination of the first reference resistor and the first resistive screen; and a voltage detector configured to measure a first voltage across the reference resistor.

The invention discloses a method for realizing a split-screen gesture operation at a mobile communication terminal. The method comprises the following steps of: a, presetting a screen subregion; and b, when a screen senses a hand touch instruction, analyzing the instruction operation with a CPU to turn page. When a user reads articles or browses the web on a mobile phone by the method, the screen is divided into two parts, namely an upper part and a lower part; when the user touches the upper half screen (or the user upwards delimits the screen in the range of the upper half screen), the page is dragged upwards, namely the user reads the following content; and when the user touches the lower half screen (or the user downwards delimits the screen in the range of the lower half screen), the page is dragged downwards, namely the user reads the former content. Therefore, a hard keyboard and a handwriting pen are eliminated and screen delimiting operation can be performed on a resistance type touch screen only by operating with fingers. The method is simple, practical and sensitive.

The invention discloses a transparent conducting material for a resistive touch panel, which comprises a polyethylene terephthalate (PET) substrate and three layers of optical thin films on the surface of the substrate, wherein from the surface of the substrate, the three layers of optical thin films are a high refractive index dielectric optical thin film, a low refractive index dielectric optical thin film and a transparent conducting film sequentially. Through the design of the three layers of optical thin films, the transparent conducting material has an anti-reflection effect on light within a visual wave range of less than 490 nanometers, particularly a range from 400 to 490 nanometers. The sheet resistivity of the transparent conducting material is between 200 and 600 ohms per square. The physical properties of the transparent conducting material facilitate the preparation and quality improvement of the resistive touch panel.

A fingertip covering for prevention of smudges, dirt accumulation and germ transfer to and from an electronic touchscreen device. The covering comprises a cylindrical section with an open end and a closed end, and a two-part construction. An antistatic microfiber material comprises the contact region and interface with the touchscreen, while an elastic material comprises the body of the covering. The use of a microfiber contact region provides a conductive interface for use with multiple touchscreen technologies. A fingernail opening is provided to accommodate users with longer finger nails, while the elastic body region conforms to different size fingers. The disclosed invention is an alternative to touchscreen covers that dull the display, reduce feedback and are prone to imbedded air bubbles that erode touch sensitivity. The coverings may be used with capacitive and resistive touchscreen without reduction in performance, and to provide a means that eliminates unwanted smudging or fingerprints on the screen.

An enhanced touch-screen display system is disclosed for generating pixel coordinate estimates corresponding to a location on a display screen touched by a user. The system is an analog resistive touch-screen display system having a processor and associated software algorithms to allow for the calibration and validation of pixel coordinate estimates as an integral part of the real-time generation of the pixel coordinate estimates. Multiple calibrated pixel coordinate estimates are generated and processed at a pre-defined sampling rate to determine a valid pixel position to minimize sampling delays due to settling times. The x-axis position is also validated before the system attempts to generate a y-axis position to avoid the wasted time for generating y-axis estimates when x-axis estimates are corrupted. Noisy estimates are inherently reduced in the touch-screen display system by providing shunts across certain drivers in the system that also allow for detection of a “no touch” state.

A method for protecting a resistive touch panel includes determining if a touch event has happened on the resistive touch panel; if it is determined that a touch event has happened, detecting an analog change of resistance between an upper substrate and a lower substrate of the resistive touch panel; converting the analog change of resistance to a digital pressure value; determining if the digital pressure value is greater than a predetermined threshold value; if the digital pressure value is greater than a predetermined threshold value, generating a warning window; and displaying the warning window through the resistive touch panel.

An enhanced touch-screen display system is disclosed for generating pixel coordinate estimates corresponding to a location on a display screen touched by a user. The system is an analog resistive touch-screen display system having a processor and associated software algorithms to allow for the calibration and validation of pixel coordinate estimates as an integral part of the real-time generation of the pixel coordinate estimates. Multiple calibrated pixel coordinate estimates are generated and processed at a pre-defined sampling rate to determine a valid pixel position to minimize sampling delays due to settling times. The x-axis position is also validated before the system attempts to generate a y-axis position to avoid the wasted time for generating y-axis estimates when x-axis estimates are corrupted. Noisy estimates are inherently reduced in the touch-screen display system by providing shunts across certain drivers in the system that also allow for detection of a “no touch” state.