公开(公告)号：US10937609B1

公开(公告)日：2021-03-02

申请号：US16662596

申请日：2019-10-24

Applicant: Primax Electronics Ltd.

Inventor： Bo-An Chen ,  Chin-Sung Pan

IPC: H01H13/70 ,  H01H13/704

Abstract: A membrane circuit structure includes a first film substrate and a first circuit layer. The first circuit layer is disposed on the first film substrate. The first circuit layer contains first conductive silver paste and second conductive silver paste. The first conductive silver paste has a first impedance value. The second conductive silver paste has a second impedance value. The first impedance value is 10 to 15 times the second impedance value.

公开(公告)号：US20200013566A1

公开(公告)日：2020-01-09

申请号：US16576598

申请日：2019-09-19

Applicant: Primax Electronics Ltd.

Inventor： Bo-An Chen ,  Chin-Sung Pan

IPC: H01H13/705 ,  G06F3/02

Abstract: A keyboard device includes a base plate, a key structure and a membrane switch circuit member. The membrane switch circuit member includes a first board and a second board. The first board includes a first circuit pattern, a conductive paste mark and a first insulation layer. The conductive paste mark is dispensed or sprayed on the first board or the first circuit pattern to define an equivalent resistance. Consequently, a ghosting problem is avoided. The second board includes a second circuit pattern and a second insulation layer. Since the first contact and the second contact are separated from each other through the first insulation layer and the second insulation layer, it is not necessary to install the separation layer in the membrane switch circuit member.

公开(公告)号：US20190227639A1

公开(公告)日：2019-07-25

申请号：US15991138

申请日：2018-05-29

Applicant: Primax Electronics Ltd.

Inventor： Bo-An Chen ,  Chin-Sung Pan ,  Lei-Lung Tsai ,  Yi-Chen Wang

IPC: G06F3/02 ,  G06K9/00 ,  G06F1/16 ,  G06F21/32 ,  H01H13/7065

Abstract: A keyboard device includes a key structure, a switch circuit board, a supporting plate and an identification module. The key structure includes a keycap and a fingerprint sensing module. The fingerprint sensing module is installed on an inner surface of the keycap in order to acquire a fingerprint information of a finger. The identification module is located under the supporting plate and electrically connected with the fingerprint sensing module. The identification module receives the fingerprint information and determines whether an unlocking operation of unlocking a computer is performed according to the fingerprint information. Since the keycap is not equipped with a hollow region and the fingerprint sensing module is not exposed, the keyboard device has the aesthetically-pleasing appearance.

公开(公告)号：US10340098B2

公开(公告)日：2019-07-02

申请号：US15906812

申请日：2018-02-27

Applicant: Primax Electronics Ltd.

Inventor： Ding-Hsiang Pan ,  Chin-Sung Pan ,  Ying-Te Chiang ,  Kun-I Yuan

IPC: H01H3/12 ,  H01H13/02

Abstract: A key structure, including a keycap, a movable mechanism, a support plate, a circuit board, and an indicator light-emitting element. The support plate and the movable mechanism pivotally connected to the support plate are disposed above the circuit board. The circuit board has a groove, and the indicator light-emitting element is embedded in the groove and is aligned with the keycap. The indicator light-emitting element emits light upward. The light may be directly emitted into the movable mechanism and is subsequently emitted outward through a light hole of the keycap.

公开(公告)号：US10276325B2

公开(公告)日：2019-04-30

申请号：US15585634

申请日：2017-05-03

Applicant: Primax Electronics Ltd.

Inventor： Yi-Chen Chung ,  Chin-Sung Pan

IPC: H01H3/12 ,  H01H13/83 ,  H01H13/84 ,  H01H13/705 ,  H01H13/702

Abstract: A keyboard device includes a light guide plate, a base plate, plural keys and plural surround-type soundproof elements. The base plate is located over the light guide plate. The plural keys are connected with the base plate. The membrane circuit board is arranged between the plural keys and the base plate. The plural surround-type soundproof elements are aligned with the corresponding keys. Each surround-type soundproof element is disposed on the light guide plate, the base plate or the membrane circuit board. While one of the plural keycaps is depressed and moved downwardly relative to the base plate, a sealed space is defined by the corresponding keycap and the corresponding surround-type soundproof element.

公开(公告)号：US20240120161A1

公开(公告)日：2024-04-11

申请号：US17973260

申请日：2022-10-25

Applicant: Primax Electronics Ltd.

Inventor： Chin-Sung Pan ,  Bo-Hao Su ,  Chen-Hsuan Hsu

IPC: H01H13/702 ,  H01H13/02 ,  H01H13/14 ,  H01H13/20 ,  H01H13/83

CPC classification number: H01H13/702 ,  H01H13/023 ,  H01H13/14 ,  H01H13/20 ,  H01H13/83

Abstract: A keyboard device includes plural keycaps, a base plate, plural connecting elements and a circuit board. The plural connecting elements are connected with the respective keycaps and the base plate. The circuit board is located over the base plate. The circuit board includes plural membrane switches and plural first capacitance sensing units. When one of the first capacitance sensing units detects an approaching conductor or detects a motion of the conductor, a driving signal is generated or a control signal is outputted.

公开(公告)号：US11610745B1

公开(公告)日：2023-03-21

申请号：US17586974

申请日：2022-01-28

Applicant: Primax Electronics Ltd.

Inventor： Sheng-Fan Chang ,  Lei-Lung Tsai ,  Chin-Sung Pan

IPC: H01H13/14 ,  H01H13/10

Abstract: A key structure includes a base plate, a switch element, a key pedestal and a keycap. The key pedestal includes an opening, a first hooking structure and a second hooking structure. The keycap includes an edge part, a triggering post, a third hooking structure and a fourth hooking structure. The third hooking structure and the fourth hooking structure are installed on the edge part. The switch element is installed on the base plate. The key pedestal is installed on the base plate. The triggering post is inserted into the opening to trigger the switch element. The third hooking structure of the keycap is movably connected with the first hooking structure of the key pedestal. The fourth hooking structure of the keycap is movably connected with the second hooking structure of the key pedestal. Consequently, the keycap is maintained in a horizontal state and not tilted.

公开(公告)号：US11598751B2

公开(公告)日：2023-03-07

申请号：US17411834

申请日：2021-08-25

Applicant: Primax Electronics Ltd.

Inventor： Chin-Sung Pan ,  Chien-Hung Liu ,  Chia-Wei Chang

IPC: G01N29/04 ,  G01N29/14 ,  G01N29/12 ,  G01M7/02 ,  G01H13/00

Abstract: A resonance detection system includes a vibration simulation mechanism and a vibration audio analysis device. The vibration simulation mechanism includes a mechanism body that accommodates a peripheral interface device, such as a notebook computer key input mechanical structure. The vibration simulation mechanism generates a vibration wave to the peripheral interface device generates a vibration audio signal in response to the vibration wave. The vibration simulation mechanism further includes a patch-type audio collector, such as a miniature auscultation radio patch, which is connected with the vibration audio analysis device. The patch-type audio collector is attached on the mechanism body containing the peripheral interface device. The vibration audio signal is collected by the patch-type audio collector. The vibration audio analysis device judges whether there is an abnormal resonance phenomenon in the vibration auto signal, which may be used for fabrication quality control of peripheral interface devices.

公开(公告)号：US20220199338A1

公开(公告)日：2022-06-23

申请号：US17164936

申请日：2021-02-02

Applicant: Primax Electronics Ltd.

Inventor： Chia-Wei Chang ,  Chin-Sung Pan ,  Lei-Lung Tsai

IPC: H01H13/7065 ,  H01H13/85

Abstract: A key structure includes a membrane switch, a keycap and an elastic conduction element. The keycap is located over the membrane switch. The elastic conduction element is arranged between the keycap and the membrane switch. The elastic conduction element includes a supporting cover and a conduction post. The conduction post is connected with the supporting cover and disposed within an accommodation space of the supporting cover. The conduction post includes a first contacting part, a second contacting part and a concave part. While the keycap is moved downwardly relative to the membrane switch, the supporting cover is compressed by the keycap and the conduction post is correspondingly moved downwardly. Consequently, the first contacting part and the second contacting part are contacted with the membrane switch, and a suction force between the concave part and the membrane switch is generated.

公开(公告)号：US11205549B1

公开(公告)日：2021-12-21

申请号：US17165631

申请日：2021-02-02

Applicant: Primax Electronics Ltd.

Inventor： Bo-An Chen ,  Chin-Sung Pan ,  Ya-Chin Tu

IPC: H01H13/83

Abstract: A keycap structure includes a keycap body and a display module. The keycap body includes a top wall and a lateral wall. The lateral wall is extended downwardly from a periphery region of the top wall. An accommodation space is defined by the top wall and the lateral wall collaboratively. The display module is disposed within the accommodation space. The display module includes a light-transmissible circuit substrate and plural light-emitting elements. The plural light-emitting elements are installed on the light-transmissible circuit substrate and electrically connected with the light-transmissible circuit substrate. After the light beams are transmitted through the light-transmissible circuit substrate and the top wall sequentially, the light beams are outputted from the keycap body. The light beams from the plural light-emitting elements are collaboratively formed as a luminous zone. Moreover, a pattern corresponding to the luminous zone is shown on the display module.