Patents Assigned to Darfon Electronics Corp.
  • Multi-battery system for an electric vehicle
    Patent number: 11325499
    Abstract: A multi-battery system includes a plurality of batteries, a first connector having a first identification unit, and a second connector having a second identification unit. Each battery includes a microcontroller, and a battery connector having a detection unit. The first connector is for electrically connecting a battery connector of a first battery of the plurality of batteries and a motor controller. The second connector is for electrically connecting a battery connector of a second battery of the plurality of batteries and the motor controller. When the first identification unit is set to a first predetermined value, and a detection unit of the first battery is electrically connected to the first identification unit, a microcontroller of the first battery sets the first battery as a master battery.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: May 10, 2022
    Assignee: DARFON ELECTRONICS CORP.
    Inventor: Pei-Chen Li
  • Optical switch keyboard adjustment method and optical switch keyboard using the same
    Patent number: 11315746
    Abstract: A method for adjusting an optical switch keyboard and an optical switch keyboard using the adjusting method are provided. The optical switch keyboard has a number of key units. The method includes the following steps. A scan signal is applied to one of a number of scan lines by a control unit at a first scan time point. A light is emitted by a light source according to the scan signal. A light emitted by the light source is detected by a detecting element to generate a detecting electric signal. The detecting electric signal is read by the control unit to obtain a first read signal voltage. When the first read signal voltage is outside the voltage range of the pressed state of the key unit, the period of the scan signal is increased by a first predetermined amount by the control unit to obtain an adjusted scan signal.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: April 26, 2022
    Assignee: Darfon Electronics Corp.
    Inventor: Chien-Hsin Lee
  • Waterproof film and keyboard thereof
    Patent number: 11289288
    Abstract: A waterproof film includes a film reinforcing layer, a light shielding layer, a texture layer, and a pattern. The light shielding layer is combined under the film reinforcing layer and forms a plurality of protruding structures cooperatively with the film reinforcing layer by a hot pressing process. The texture layer is attached to a release film and then formed on a top surface and a side surface of each protruding structure after a hot pressing process is performed and the release film is then peeled. The pattern is formed on the texture layer or the light shielding layer.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: March 29, 2022
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Zheng-Hong Lai, Chih-Ho Hsu, Chin-Lung Chan, Che-Wei Lee, Chang-En Sun
  • Key scanning method, scan method for key scan circuit, and input device implemented therewith
    Patent number: 11290126
    Abstract: A key scanning method, a scan method for a key scan circuit, and an input device thereof are provided. The key scanning method comprises performing a first scan procedure which includes triggering a first main scan line and reading electrical signals received via a plurality of signal sensing lines to determine whether any of the keys among a first key group is triggered. Then, performing a second scan procedure which includes triggering at least one of a plurality of secondary scan lines and reading the electrical signals received via the plurality of signal sensing lines to determine whether any of the keys among a second key group is triggered. In the key scanning method, the first scan procedure and the second scan procedure are performed one after another, and each of the secondary scan lines is triggered at least once.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: March 29, 2022
    Assignees: Darfon Electronics Corp., DARFON ELECTRONICS (SUZHOU) CO., LTD.
    Inventors: Xi Sheng Chen, Te Ping Hsu
  • Keyswitch structure
    Patent number: 11289284
    Abstract: A keyswitch structure includes a base plate, a keycap, and two supports connected to the base plate and the keycap. The keycap is movable relative to the base plate through the two supports. The support is pivotally connected to the base plate through a pivotal connection structure that includes a guiding slot and a protruding shaft oppositely disposed on the support and the base plate. The guiding slot has an opening and an indentation portion. The opening is located at an upper end of the guiding slot. The protruding shaft enters the guiding slot from the opening to rotatably fit in the indentation portion, so that the support is pivotally connected to the base plate.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: March 29, 2022
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Cheng-Min Su, Chin-Lung Chan, Yu-Chih Chang
  • Keyswitch structure
    Patent number: 11264186
    Abstract: A keyswitch structure includes a keycap, a base, and two supports pivotally connected to each other relative to a rotation axis and connected to and between the keycap and the base. One of the supports includes a first shaft recess, a first shaft portion, and a division slot formed therebetween; the other support includes a second shaft recess, a second shaft portion, and a division wall therebetween. The two supports are pivotally connected relative to the rotation axis by the first shaft portion and the second shaft portion rotatably disposed in the first shaft recess and the second shaft recess respectively. Therein, the division wall is inserted into the division slot. The keycap can move up and down relative to the base through the two supports.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: March 1, 2022
    Assignee: DARFON ELECTRONICS CORP.
    Inventor: Ling-Hsi Chao
  • Button switch and restoration assembly thereof
    Patent number: 11264185
    Abstract: A restoration assembly of a button switch includes first and second sleeves, and a spring disposed between the two sleeves. A first outer diameter of the first sleeve is less than a second inner diameter of the second sleeve to make the second sleeve movably jacket outside the first sleeve. The jacketed first and second sleeves are disposed between a key cap and a base of the button switch. The spring has a first end portion, a second end portion and a middle section. A middle outer diameter of the middle section of the spring is larger than a first inner diameter of the first sleeve. During the spring being compressed along with the key cap being pressed downward, the middle section is squeezed to shrink and slide into the first sleeve through an end edge of the first sleeve, thereby producing a tactile feedback and/or a first sound.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: March 1, 2022
    Assignee: DARFON ELECTRONICS CORP.
    Inventor: Sheng-Yun Yang
  • Backlight apparatus
    Patent number: 11257444
    Abstract: A backlight apparatus includes a circuit board, a control board, and a connection cable connecting the above components. A first light source driver and a second light source driver are disposed on the circuit board and are electrically connected to a plurality of first light sources and a plurality of second light sources respectively. A connector is disposed on the circuit board. The first and second light source drivers are individually electrically coupled in series to the connector. The control board outputs electrical power, a first data stream, and a second data stream. The first light source driver controls the first light sources to light individually according to the first data stream. The second light source driver controls the second light sources to light individually according to the second data stream. Thereby, the circuit board can control the operation of the light sources individually.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: February 22, 2022
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Ming-Yen Wu, Yen-Fu Chou, Wen-Jui Chiang
  • Keyswitch
    Patent number: 11223357
    Abstract: A keyswitch includes a circuit board, a bottom board abutting against the circuit board, a cap, a light receiver and a light emitter disposed on the circuit board and opposite to each other, a base disposed on the circuit board, a cover disposed on the base, a first elastic member disposed through the cover and the base, a support device, and a second elastic member fixed to the base and having a flexible rod. The support device is movably connected to the cap and bottom board and has a sheet structure. When the cap is pressed, the sheet structure blocks light transmission between the light emitter and the light receiver to generate a triggering signal. When the cap is pressed to make the flexible rod deform downward with the sheet structure and then cross the sheet structure, the flexible rod is released to collide with the cover to make sound.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: January 11, 2022
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Yu-Chun Hsieh, Chen Yang, Chia-Hung Liu
  • Keyswitch structure
    Patent number: 11189442
    Abstract: A keyswitch structure includes a base plate, a keycap, a lift mechanism connecting the keycap and the base plate, a movable part movably disposed relative to the base plate, a linking support, and a magnetic part on the base plate. The linking support has a pivotal connection portion, a magnetic portion, and a driving portion. The magnetic part and the magnetic portion produce a magnetic attraction force therebetween. When the movable part is located at a first position, the pivotal connection portion is rotatably disposed on a protruding portion of the movable part, and the magnetic attraction force drives the keycap through the linking support to move away relative to the keycap. When the movable part moves from the first position to a second position, the protruding portion moves away, so that the pivotal connection portion falls down and the keycap moves toward the base plate.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: November 30, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Ming-Yuan Hsieh, Ling-Hsi Chao, Liang-Ta Yeh
  • Optical keyswitch triggered by support mechanism having at least one rotatable frame enable a protrusion to move along with a key cap
    Patent number: 11108393
    Abstract: An optical keyswitch includes a keycap, a supporting mechanism having a protrusion disposed under the keycap to support the keycap to move downward or upward, and a switch module including a circuit board, an emitter, and a receiver. The emitter and the receiver are electrically connected to the circuit board. The emitter emits an optical signal to the receiver. When the keycap is not pressed, the receiver receives the optical signal of a first intensity. When the keycap is pressed, the protrusion moves along with the keycap, and the protrusion changes the optical signal received by the receiver to have a second intensity different from the first intensity, so the switch module is triggered to generate a triggering signal.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: August 31, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Chen Yang, Yu-Chun Hsieh, Yung-Chih Wang, Chia-Hung Liu, Ching-Yu Wang, Li-Te Chang
  • Keyswitch device
    Patent number: 11107644
    Abstract: A keyswitch device includes a cap, a board, a first returning member, and a second returning member. The board is disposed opposite to the cap. The first returning member is disposed between the cap and the board and includes a magnet member and a magnetic member for providing a magnetic force. The second returning member is disposed between the cap and the board for providing an elastic force. When the cap is released at a lowest position, the cap moves upward via the elastic member and then arrives and stays at a highest position via the magnetic force.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: August 31, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventor: Ming-Yuan Hsieh
  • Wheel device applied to a mouse
    Patent number: 11099666
    Abstract: A wheel device applied to a mouse includes a base, a wheel module, a sheltering component and an optical detecting module. The base has a holder. The wheel module is disposed on the base and includes a roller and a wheel. The roller includes a rolling surface, an axle and a plurality of rib structures. The axle is rotatably disposed on the holder in an axle direction. The rib structures are disposed inside the rolling surface. The wheel is disposed on the rolling surface of the roller. The sheltering component includes light sheltering areas and light penetrating areas disposed on the roller or the wheel and around the axle direction. Each light sheltering area is perpendicular to the axle. The optical detecting module has an optical emitter and an optical receiver. The optical receiver is adapted to receive an optical signal emitted by the optical emitter.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: August 24, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Chen-Yun Su, Da-Shan Hsu, Shao-Lun Hsiao, Ling-Hsi Chao
  • OPTICAL SWITCH KEYBOARD ADJUSTMENT METHOD AND OPTICAL SWITCH KEYBOARD USING THE SAME
    Publication number: 20210202193
    Abstract: A method for adjusting an optical switch keyboard and an optical switch keyboard using the adjusting method are provided. The optical switch keyboard has a number of key units. The method includes the following steps. A scan signal is applied to one of a number of scan lines by a control unit at a first scan time point. A light is emitted by a light source according to the scan signal. A light emitted by the light source is detected by a detecting element to generate a detecting electric signal. The detecting electric signal is read by the control unit to obtain a first read signal voltage. When the first read signal voltage is outside the voltage range of the pressed state of the key unit, the period of the scan signal is increased by a first predetermined amount by the control unit to obtain an adjusted scan signal.
    Type: Application
    Filed: November 13, 2020
    Publication date: July 1, 2021
    Applicant: Darfon Electronics Corp.
    Inventor: Chien-Hsin LEE
  • Key switch
    Patent number: 11049673
    Abstract: A key switch includes a key cap, a base, a support device and a bracket. The base has a first magnetic area. The support device is disposed between the key cap and the base. The bracket is movably connected to the support device. The bracket has a second magnetic area corresponding to the first magnetic area. When the key cap is not pressed, a magnetic attraction force between the first and second magnetic areas keeps the key cap at a non-pressed position. When the key cap is pressed by an external force, the key cap moves with the support device from the non-pressed position to a pressed position. When the external force is released, the second magnetic area moves toward the first magnetic area due to the magnetic attraction force, such that the key cap moves with the support device from the pressed position to the non-pressed position.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: June 29, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventor: Ling-Hsi Chao
  • Optical keyswitch
    Patent number: 11018667
    Abstract: An optical keyswitch includes a keycap, a supporting mechanism having a protrusion disposed under the keycap to support the keycap to move downward or upward, and a switch module including a circuit board, an emitter, and a receiver. The emitter and the receiver are electrically connected to the circuit board. The emitter emits an optical signal to the receiver. When the keycap is not pressed, the receiver receives the optical signal of a first intensity. When the keycap is pressed, the protrusion moves along with the keycap, and the protrusion changes the optical signal received by the receiver to have a second intensity different from the first intensity, so the switch module is triggered to generate a triggering signal.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: May 25, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Chen Yang, Yu-Chun Hsieh, Yung-Chih Wang, Chia-Hung Liu
  • Input device with a scroll wheel
    Patent number: 11009971
    Abstract: An input device includes a wheel supporting structure, a scroll wheel, a hook part, a linking part, and a switching mechanism. The scroll wheel is rotatably supported by the wheel supporting structure, is exposed from the input device, and has a rotary shaft with a plurality of toothed slots thereon. The hook part is disposed biased on the wheel supporting structure to selectively engage with the toothed slots. The linking part is pivotally connected to the wheel supporting structure. The switching mechanism includes an abutting part and a switching part. The abutting part abuts against the linking part. The switching part is coupled to the abutting part. Therein, the switching mechanism is operable to move the abutting part through the switching part to rotate the linking part to abut against and move the hook part to disengage from the toothed slots.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: May 18, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Ching-Chin Chang, Wen-Yu Tsai, Feng-Wei Su, Chun-Chieh Chen
  • Electric bicycle and battery lift mechanism and battery carrying device thereof
    Patent number: 10994620
    Abstract: An electric bicycle and a battery lift mechanism and a battery carrying device thereof are disclosed. The battery lift mechanism includes a bracket, a carrier for carrying a battery, an upward-force device coupling with the carrier, and a locking device selectively in an unlocked state or a locked state. The carrier is movable relative to the bracket along an up-down path; the upward-force device is capable of applying an upward force to the carrier. When the locking device is in the locked state, the locking device interferes with the battery to limit the relative movement between the battery and the bracket. When the locking device is in the unlocked state, the interference between the locking device and the battery is removed, so that the upward-force device drives the carrier carrying the battery to move upward relative to the bracket.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: May 4, 2021
    Assignees: DARFON ELECTRONICS (SUZHOU) CO., LTD., DARFON ELECTRONICS CORP.
    Inventor: Yu-Chang Shieh
  • Keyswitch structure
    Patent number: 10984968
    Abstract: A keyswitch structure includes a base plate, a keycap, and two supports connected to the base plate and the keycap. The keycap is movable relative to the base plate through the two supports. In an embodiment, the support is pivotally connected to the base plate through a pivotal connection structure that includes a guiding slot and a protruding shaft oppositely disposed on the support and the base plate. The guiding slot has an indentation portion and can guide the protruding shaft to fit in the indentation portion. In another embodiment, the support includes a support body connected to the base plate, and an abutting arm extending from the support body. The base plate structurally constrains the support through a hook and a limitation post thereof. The abutting arm of one support extends under the other support, so that the two supports can move each other through the abutting arms.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: April 20, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Cheng-Min Su, Chin-Lung Chan, Yu-Chih Chang
  • Method for fabricating keyboard covering film
    Patent number: 10978261
    Abstract: A method for fabricating a keyboard covering film is provided. The method includes steps of: coating a transparent plastic material on an upper surface of a fabric layer before the transparent plastic material is cured; treating the fabric layer and the transparent plastic material by a hot press process to cure the transparent plastic material to form a transparent layer and to make the transparent layer and the fabric layer jointly form a number of keycap receiving sections; forming a mask layer on a lower surface of the fabric layer; removing a portion of the mask layer and a portion of the fabric layer located within each of the keycap receiving sections to form a number of hollow patterns.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: April 13, 2021
    Assignee: DARFON ELECTRONICS CORP.
    Inventors: Zheng-Hong Lai, Chih-Ho Hsu, Che-Wei Lee, Jin-Long Chan, Yuan-bao Chen, Chang-En Sun