TWI249134B - Touch panel structure - Google Patents

Touch panel structure Download PDF

Info

Publication number
TWI249134B
TWI249134B TW92120031A TW92120031A TWI249134B TW I249134 B TWI249134 B TW I249134B TW 92120031 A TW92120031 A TW 92120031A TW 92120031 A TW92120031 A TW 92120031A TW I249134 B TWI249134 B TW I249134B
Authority
TW
Taiwan
Prior art keywords
upper
substrate
touch panel
resistive film
lower
Prior art date
Application number
TW92120031A
Other languages
Chinese (zh)
Other versions
TW200504606A (en
Inventor
Wen-Hung Wang
Lin Lin
Original Assignee
Wintek Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wintek Corp filed Critical Wintek Corp
Priority to TW92120031A priority Critical patent/TWI249134B/en
Publication of TW200504606A publication Critical patent/TW200504606A/en
Application granted granted Critical
Publication of TWI249134B publication Critical patent/TWI249134B/en

Links

Abstract

The present invention provides a touch panel structure which applies a face-to-face binding at the upper substrate and the lower substrate of a resistive film having a X- and Y-axis cross-allocated induced voltage circuit, and extends pins from the center of four sides of the upper substrate and the lower substrate. By using the same structure on the induced voltage circuit in the upper substrate and the lower substrate of the resistive film, driving types are increased and not restricted by a single driving type. Besides, the present invention has a plurality of detecting circuits, which can increase the selectivity of the detecting circuits and thus still work when a single circuit is broken.

Description

44 1-present and "life, coffee, w. and like" V. Description of the Invention (1) Technical Field of the Invention The present invention relates to a touch panel architecture for a touch line. [Prior Art] Due to the increasing technology and the increasing diversification of input devices, the panel has the opportunity to become a touch control device using conductive glass and conductive film boards. The touch panel, with its humanized teaching and learning, can directly indicate the need for point selection, and the application of the modified control panel structure, especially a brand new input device with multiple information, communication, electronics and other products - The user-friendly touch panel and the touch panel (Touch Panel) are used to display the input interface characteristics of the desired image on the screen by the cable and the type, and almost no finger or touch is required. Pens and so on according to the power on the screen is very extensive. The main applications include (1) portable communication, consumer electronics and information products such as personal digital assistants (PDAs), palm-sized computers (Palm-Sized PCs), electronic dictionaries, handwriting input devices, information appliances (Information Appliance) ), new = algebraic broadband mobile phone (including 3G & GPRS mobile phone, etc.), stock market information display (such as Etienne King); (2) financial / commercial use: such as withdrawal / ticketing system, sales system, remote video Conference, telephone terminal system; (3) Medical and health use: such as registration system, operating table monitoring, medical tracking; (4) Industrial use: such as factory automation control system, remote / central supervision

Page 5

92120031 Control system, workstations, etc. / (5) Public information system, management information system (MIS); political information inquiry system; J. Airport navigation system, cultural relics introduction system, ground (6) teaching / video game computer Auxiliary teaching and so on. Uses: Game machines in the entertainment center, children's _ field, all-integrated panel market account for the largest proportion of industrial use, followed by guidance, Fengsa / sale checkpoints, medical and video games. In the future, with the use of touch-faced temples, the use of portable communication and consumer electronic products will occupy an important position in the touch panel. Vertical touch panels can be divided into: resistive, capacitive, and helium: air-light guided wave type, load-changing type · ··, etc., but the most widely used resistive type, depending on the design of each manufacturer Can be divided into four lines, five lines, six lines and other different architectures. Among them, 'Filffl On Glass' is the most general design application: its technical principle is transparent conductive glass (IT〇Glass) and transparent=electric film (ITO film) according to X, γ-axis wiring, upper and lower transparent electrodes A dot spacer is provided, and a pressure is applied to the upper electrode by a finger, a pen or other medium, so that the upper and lower electrodes are indirectly circulated to generate a potential difference, and a switch is formed at the fault of the upper and lower lines, and the switch is turned on (on). ) / OFF (OFF) action, the ON (ON) / OFF (OFF) signal is transmitted to the controller via the cable to further calculate the coordinate position at the pressure. The touch screen can be divided into four wires (4 Wire), five wires (5 Wire) and eight wires (8 Wire) depending on the wiring method. The four-wire type is the most common wiring type, and the touch principle is the two X-axis γ axes of the upper and lower electrodes.

!-η -^^92120031 Fix

The invention was formed. The disadvantage is that the voltage applied to the touch panel is switched on and off, which is easy to cause interference; and the circuit on the layout is one. The linearity between the next layer is poor. One ° Bay' will cause (3) The five-green type is formed by four X-axis Υ axes for the lower electrode, and is controlled by the other wiring. Therefore, the upper electrode has a higher resistance value and the electrode is bad. The shortcoming is that the touch panel has only one driving mode, and the car is not easy to damage the road and only one line. Once the line is damaged, the line cannot be operated and the detection line is the most common wiring type. Each of the four X-axis γ axes of the lower electrode is formed. The shortcomings A, the upper part of the crucible and the applied voltage are switched between the upper and lower layers, and it is easy to cause the circuit of the touch panel to be cut but the linearity is poor. The present invention is directed to the above-mentioned problem of avoiding the absence of the above-mentioned problems. The space 'is not constrained by the single-drive mode. In addition, it has a multi-cardioid type, which can increase the selectivity of the detection line, and can avoid the situation that the line cannot be used because of the one or one bay 7; the single lower layer or the upper substrate 5 Two $3 damage can be used to enhance the use of four-wire and eight-wire touch panels. In order to achieve the above purpose, the present invention proposes a structure in which the upper substrate and the lower substrate having the X-axis and the γ-axis are arranged and the induced voltage is applied to the panel substrate, so that the Two electric powers: the position of the resistor becomes the value of the quadratic coordinate value, and the contact is characterized in that among the four sides of the upper substrate and the lower substrate, in the control panel, the middle position respectively pulls out the pin

Page 7

A, B, C, D, E, F, G, Η; When detecting the 座 axis coordinates, connect the pedals, G (or the upper substrate a, c) on the left and right sides of the lower substrate, plus 5V (volts) With 0V voltage, the upper substrate (lower substrate) is used for detection, and the signals of the four detection lines of the resistive film are extracted, and the signal X-axis signal is extracted; then, the upper substrate (upper substrate) is up and down. The two pins F, h (or B, D) are applied with 5V and 0V voltages. At this time, the above substrate is used as the signal for detecting four detection lines of the resistive film. For the Y-axis signal. [Embodiment] The details and technical description of the present invention are now shown in conjunction with the drawings. Referring to Fig. 1, the touch panel architecture of the present invention is shown. As shown in the figure: a touch panel architecture mainly consists of an X-axis and a Y-axis crossing the upper substrate 1000 of the resistive film 感应i 〇, and an X-axis and a Y-axis cross-configuration The lower substrate 2 of the resistive film 210 under the induced voltage line is oriented to face, and the contact position of the upper resistive film 丨丨〇 and the lower resistive film 2 1 0 becomes a quadratic coordinate value. In the touch panel, the pins A, b, C, D, E, F, G, and Η are respectively pulled out at the middle of the upper substrate 1 〇〇 and the lower substrate 2 Η; The invention has eight externally controlled wires, and the connection method is as follows: when the X-axis coordinate is to be detected, the left and right sides of the lower substrate 2〇〇 are connected with a foot, a G, a 5V (volt) and a voltage of 0V. And by using the upper substrate 1〇〇 as the detection, the four detectors of the upper resistive film 11〇 and the γ-axis are arranged.

Page 8 __ j No. 92120031, invention description > (5) Test line, ^ number, the signal that is captured is the axis signal; "Connecting the upper and lower sides of the lower substrate 200 with the pin F, Η plus 5V And (10) voltage, and the above-mentioned upper substrate 100 is detected as the signal, and the signals of the four pre-measured lines of the upper resistive film 丨J 〇^ axis and the x-axis are taken, and the 4 Lu is captured. The γ-axis signal, wherein the upper resistive film 110 and the lower resistive film 210 are transparent conductive films. In the same method, the pins A, Β, C, and D of the upper substrate 1 can also be used as a voltage of 5 V, 〇V. The input is used, and the lower substrate 2 is used as a detection. • As described in the above, the wiring application of the present invention will have the following four methods 11 on the lower substrate 2? Add a voltage of 5 ¥, and the pin, and the pin G, £ open circuit, at this time, the upper substrate 1 接 pin, β < number * are thinking of the sensor (Sensor), the signal of detection Detect Y-axis letter _ = day guard 'off voltage, and add a voltage of 5V to pin G, and the pin is 〇V, and the pins F and H are open, then the upper substrate is connected Foot a, b c, υ white as a detection, detecting the signal of the X axis. DAnv method 2: a voltage of 5V is applied to the pin of the upper substrate 1 , and the pin is ^, and the pins A and C are open, this At present, the pins e and f of the substrate 2 are detected (Sens〇r), and the signal of the ¥ axis is detected. The γ-axis is detected to turn off the power for the second time, and a voltage is applied to the pin C. 5V, and the connection (4) is opener than V' and the pins B and D are open. At this time, the pins E艸, g, and white of the lower substrate 2 are detected to detect the signal of the X axis. Method 3: On the upper substrate 100 pin B plus - electricity - V, and the pin

repair

V. Description of the invention

D is 〇\' and the pins A and C are open circuits. At this time, the pins E, F, and 白^ white 1 of the lower substrate 200 are detected, and the signal of the Y axis is detected. Detect Y-axis letter

When the number is completed, the voltage is turned off, and a voltage of 5V is applied to the lower substrate 200 0, and the pin E is 0V, and the pins F and H are open, and the pins A and β of the upper substrate 1 are at this time. C, β are used as detection to detect the X-axis signal. Method 4: Apply a voltage of 5V to the pin c of the upper substrate 1 while the pin is 0V ' and the pins B and D are open. At this time, the pins of the lower substrate 200, F, I , ^ are used as a detector to detect the X-axis signal. Detect x-axis letter

^ When finished, turn off the voltage and apply a voltage of 5V to the lower substrate 20 0 pin F.

The pin is 0V, and the pins E and G are open. At this time, the pins of the upper substrate 丨00, β, C, and D are detected as signals to detect the γ axis. For example, the present invention utilizes the sensing voltage of the same structure in the upper and lower layers, and the resistive film as the touch panel, which can increase the space of the driving mode, = the constraint of the single driving mode, and has multiple sets of detecting lines. Can = add the selectivity of the detection line, can avoid the situation that can not be used due to a single line damage. The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the implementation. All changes and modifications made in accordance with the scope of the present invention are covered by the scope of the invention.

Page 10 k Zero 3] Case No. 92120031 修正 Correction Simple description of the drawing [Simple description of the drawing] Fig. 1 is a schematic diagram of the structure of the touch panel of the present invention [Description of the figure] Upper substrate 100 Lower substrate 200

Pins A, B, C, D, E, F, G, H

Page 11

Claims (1)

  1. 丄, 悝啁 control panel structure, the main and fork configuration of the upper surface of the resistive film on the resistive voltage line, the 轴 交 交 交 又 又 又 又 又 又 又 又 又 配置 配置 配置 配置 配置 配置 电阻 电阻 电阻 电阻 具有 电阻 具有 具有 具有 具有 具有 具有The touch panel of the upper resistive film and the lower resistive film is in a touch panel with a nominal value for detecting the output, and the special position is π J Β at the middle of the upper side of the upper substrate and the lower substrate respectively. The ankles C, D, E, F, (ί, H; Hi it} are connected to the pedals. When detecting the axis coordinates, the pedals are placed on the left and right sides of the lower substrate, G;::5 The signal of the four detection lines of the membrane, this signal is the shaft axis, then the upper and lower sides of the lower substrate are connected to the foot F, Η plus 5V and 〇ν voltage, ί Ϊ Ϊ the above substrate as the detection, take the upper resistance The signal of the four detection lines of the film is the γ-axis signal. 2. The touch panel structure as described in the scope of the patent application, wherein the pins A, B, and c of the upper substrate can also be used. ,]) as the input of voltage, and the pins E, F, G, and 下 of the lower substrate are used for detection. The range of the second touch panel Shu Li item schema, beans, the upper and the lower resistive film resistive film based transparent conductive film.,
    Page 3
TW92120031A 2003-07-23 2003-07-23 Touch panel structure TWI249134B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW92120031A TWI249134B (en) 2003-07-23 2003-07-23 Touch panel structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW92120031A TWI249134B (en) 2003-07-23 2003-07-23 Touch panel structure

Publications (2)

Publication Number Publication Date
TW200504606A TW200504606A (en) 2005-02-01
TWI249134B true TWI249134B (en) 2006-02-11

Family

ID=37429471

Family Applications (1)

Application Number Title Priority Date Filing Date
TW92120031A TWI249134B (en) 2003-07-23 2003-07-23 Touch panel structure

Country Status (1)

Country Link
TW (1) TWI249134B (en)

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8105126B2 (en) 2008-07-04 2012-01-31 Tsinghua University Method for fabricating touch panel
US8111245B2 (en) 2007-12-21 2012-02-07 Tsinghua University Touch panel and display device using the same
US8115742B2 (en) 2007-12-12 2012-02-14 Tsinghua University Touch panel and display device using the same
US8125878B2 (en) 2007-12-27 2012-02-28 Tsinghua University Touch panel and display device using the same
US8199119B2 (en) 2007-12-12 2012-06-12 Beijing Funate Innovation Technology Co., Ltd. Touch panel and display device using the same
US8237675B2 (en) 2007-12-27 2012-08-07 Tsinghua University Touch panel and display device using the same
US8237671B2 (en) 2007-12-12 2012-08-07 Tsinghua University Touch panel and display device using the same
US8237670B2 (en) 2007-12-12 2012-08-07 Tsinghua University Touch panel and display device using the same
US8237674B2 (en) 2007-12-12 2012-08-07 Tsinghua University Touch panel and display device using the same
US8237669B2 (en) 2007-12-27 2012-08-07 Tsinghua University Touch panel and display device using the same
US8237672B2 (en) 2007-12-14 2012-08-07 Tsinghua University Touch panel and display device using the same
US8237668B2 (en) 2007-12-27 2012-08-07 Tsinghua University Touch control device
US8237673B2 (en) 2007-12-14 2012-08-07 Tsinghua University Touch panel and display device using the same
US8243030B2 (en) 2007-12-21 2012-08-14 Tsinghua University Touch panel and display device using the same
US8243029B2 (en) 2007-12-14 2012-08-14 Tsinghua University Touch panel and display device using the same
US8248379B2 (en) 2007-12-14 2012-08-21 Tsinghua University Touch panel, method for making the same, and display device adopting the same
US8248377B2 (en) 2007-10-23 2012-08-21 Tsinghua University Touch panel
US8248381B2 (en) 2007-12-12 2012-08-21 Tsinghua University Touch panel and display device using the same
US8248378B2 (en) 2007-12-21 2012-08-21 Tsinghua University Touch panel and display device using the same
US8248380B2 (en) 2007-12-14 2012-08-21 Tsinghua University Touch panel and display device using the same
US8253701B2 (en) 2007-12-14 2012-08-28 Tsinghua University Touch panel, method for making the same, and display device adopting the same
US8253700B2 (en) 2007-12-14 2012-08-28 Tsinghua University Touch panel and display device using the same
US8325145B2 (en) 2007-12-27 2012-12-04 Tsinghua University Touch panel and display device using the same
US8325146B2 (en) 2007-12-21 2012-12-04 Tsinghua University Touch panel and display device using the same
US8325585B2 (en) 2007-12-12 2012-12-04 Tsinghua University Touch panel and display device using the same
US8346316B2 (en) 2008-08-22 2013-01-01 Tsinghua University Personal digital assistant
TWI383312B (en) * 2008-11-13 2013-01-21 Orise Technology Co Ltd Method for detecting touch point and touch panel using the same
US8363017B2 (en) 2007-12-12 2013-01-29 Beijing Funate Innovation Technology Co., Ltd. Touch panel and display device using the same
US8390580B2 (en) 2008-07-09 2013-03-05 Tsinghua University Touch panel, liquid crystal display screen using the same, and methods for making the touch panel and the liquid crystal display screen
US8411044B2 (en) 2007-12-14 2013-04-02 Tsinghua University Touch panel, method for making the same, and display device adopting the same
TWI399685B (en) * 2008-08-01 2013-06-21 Apex Material Technology Corp Resistance-type touch panel
US8502786B2 (en) 2007-10-23 2013-08-06 Tsinghua University Touch panel
US8542212B2 (en) 2007-12-12 2013-09-24 Tsinghua University Touch panel, method for making the same, and display device adopting the same
US8574393B2 (en) 2007-12-21 2013-11-05 Tsinghua University Method for making touch panel
US8585855B2 (en) 2007-12-21 2013-11-19 Tsinghua University Method for making touch panel
US9040159B2 (en) 2007-12-12 2015-05-26 Tsinghua University Electronic element having carbon nanotubes
US9077793B2 (en) 2009-06-12 2015-07-07 Tsinghua University Carbon nanotube based flexible mobile phone

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI402739B (en) * 2009-07-17 2013-07-21 Egalax Empia Technology Inc Method and device for detecting wire connection of 4-wire resistive touch panel
TWI587194B (en) * 2016-02-04 2017-06-11 恆顥科技股份有限公司 Touch display panel

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8248377B2 (en) 2007-10-23 2012-08-21 Tsinghua University Touch panel
US8502786B2 (en) 2007-10-23 2013-08-06 Tsinghua University Touch panel
US8237674B2 (en) 2007-12-12 2012-08-07 Tsinghua University Touch panel and display device using the same
US8115742B2 (en) 2007-12-12 2012-02-14 Tsinghua University Touch panel and display device using the same
US8199119B2 (en) 2007-12-12 2012-06-12 Beijing Funate Innovation Technology Co., Ltd. Touch panel and display device using the same
US8237670B2 (en) 2007-12-12 2012-08-07 Tsinghua University Touch panel and display device using the same
US8325585B2 (en) 2007-12-12 2012-12-04 Tsinghua University Touch panel and display device using the same
US8363017B2 (en) 2007-12-12 2013-01-29 Beijing Funate Innovation Technology Co., Ltd. Touch panel and display device using the same
US8237671B2 (en) 2007-12-12 2012-08-07 Tsinghua University Touch panel and display device using the same
US9040159B2 (en) 2007-12-12 2015-05-26 Tsinghua University Electronic element having carbon nanotubes
US8248381B2 (en) 2007-12-12 2012-08-21 Tsinghua University Touch panel and display device using the same
US8542212B2 (en) 2007-12-12 2013-09-24 Tsinghua University Touch panel, method for making the same, and display device adopting the same
US8243029B2 (en) 2007-12-14 2012-08-14 Tsinghua University Touch panel and display device using the same
US8411044B2 (en) 2007-12-14 2013-04-02 Tsinghua University Touch panel, method for making the same, and display device adopting the same
US8237673B2 (en) 2007-12-14 2012-08-07 Tsinghua University Touch panel and display device using the same
US8237672B2 (en) 2007-12-14 2012-08-07 Tsinghua University Touch panel and display device using the same
US8253700B2 (en) 2007-12-14 2012-08-28 Tsinghua University Touch panel and display device using the same
US8248379B2 (en) 2007-12-14 2012-08-21 Tsinghua University Touch panel, method for making the same, and display device adopting the same
US8253701B2 (en) 2007-12-14 2012-08-28 Tsinghua University Touch panel, method for making the same, and display device adopting the same
US8248380B2 (en) 2007-12-14 2012-08-21 Tsinghua University Touch panel and display device using the same
US8585855B2 (en) 2007-12-21 2013-11-19 Tsinghua University Method for making touch panel
US8111245B2 (en) 2007-12-21 2012-02-07 Tsinghua University Touch panel and display device using the same
US8574393B2 (en) 2007-12-21 2013-11-05 Tsinghua University Method for making touch panel
US8248378B2 (en) 2007-12-21 2012-08-21 Tsinghua University Touch panel and display device using the same
US8325146B2 (en) 2007-12-21 2012-12-04 Tsinghua University Touch panel and display device using the same
US8243030B2 (en) 2007-12-21 2012-08-14 Tsinghua University Touch panel and display device using the same
US8237675B2 (en) 2007-12-27 2012-08-07 Tsinghua University Touch panel and display device using the same
US8325145B2 (en) 2007-12-27 2012-12-04 Tsinghua University Touch panel and display device using the same
US8125878B2 (en) 2007-12-27 2012-02-28 Tsinghua University Touch panel and display device using the same
US8237668B2 (en) 2007-12-27 2012-08-07 Tsinghua University Touch control device
US8237669B2 (en) 2007-12-27 2012-08-07 Tsinghua University Touch panel and display device using the same
US8237680B2 (en) 2008-07-04 2012-08-07 Tsinghua University Touch panel
US8228308B2 (en) 2008-07-04 2012-07-24 Tsinghua University Method for making liquid crystal display adopting touch panel
US8105126B2 (en) 2008-07-04 2012-01-31 Tsinghua University Method for fabricating touch panel
US8237679B2 (en) 2008-07-04 2012-08-07 Tsinghua University Liquid crystal display screen
US8237677B2 (en) 2008-07-04 2012-08-07 Tsinghua University Liquid crystal display screen
US8199123B2 (en) 2008-07-04 2012-06-12 Tsinghua University Method for making liquid crystal display screen
US8390580B2 (en) 2008-07-09 2013-03-05 Tsinghua University Touch panel, liquid crystal display screen using the same, and methods for making the touch panel and the liquid crystal display screen
US8411052B2 (en) 2008-07-09 2013-04-02 Tsinghua University Touch panel, liquid crystal display screen using the same, and methods for making the touch panel and the liquid crystal display screen
US8411051B2 (en) 2008-07-09 2013-04-02 Tsinghua University Liquid crystal display screen
TWI399685B (en) * 2008-08-01 2013-06-21 Apex Material Technology Corp Resistance-type touch panel
US8346316B2 (en) 2008-08-22 2013-01-01 Tsinghua University Personal digital assistant
TWI383312B (en) * 2008-11-13 2013-01-21 Orise Technology Co Ltd Method for detecting touch point and touch panel using the same
US9077793B2 (en) 2009-06-12 2015-07-07 Tsinghua University Carbon nanotube based flexible mobile phone

Also Published As

Publication number Publication date
TW200504606A (en) 2005-02-01

Similar Documents

Publication Publication Date Title
US10310684B2 (en) Touch sensor and display apparatus
US9746956B2 (en) Touch detector and method of driving the same, display with touch detection function, and electronic unit having plural different drive electrodes
JP6205024B2 (en) Touch screen LCD display
US9710100B2 (en) Display device, touch detection device and electronic apparatus
US20190079671A1 (en) User input apparatus, computer connected to user input apparatus, and control method for computer connected to user input apparatus, and storage medium
JP6484227B2 (en) Multi-Sensor Touch Integrated Display Driver Configuration for Capacitive Sensing Devices
JP6525536B2 (en) Display protection technology
JP6220067B2 (en) Touch input sensing method and apparatus for reducing parasitic capacitance effects
CN105739790B (en) A kind of touch-control display panel
TWI498798B (en) Display device
US9977527B2 (en) Touch sensing device and method for driving the same
US10067624B2 (en) Display device with touch detection function and electronic apparatus
US9058072B2 (en) Touch sensing apparatus and driving method thereof
CN104820528B (en) Display device and its driving method with capacitive type sensor
CN105022523B (en) Touch-sensing device and display device
US9684400B2 (en) Capacitive sensing detection method for an active pixel matrix
US9785283B2 (en) Display device provided with sensor and method of driving the same
US10444891B2 (en) Touch panel and display device including the same
CN104423757B (en) Touch integrated circuit and be integrated with the display device of the touch-screen using it
US8791916B2 (en) Display panel with touch detection function, method of driving the same, driving circuit, and electronic unit
CN105260067B (en) Embedded touch shows equipment
KR101305924B1 (en) Display device and driving method thereof
US10175791B2 (en) Display device with integrated touch screen
US9477356B2 (en) System and method to drive touch panel to measure hover
CN103488325B (en) There is the display device of integrated touch screen

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees