WO2023160125A1 - 一种可发光的键盘和电子设备 - Google Patents

一种可发光的键盘和电子设备 Download PDF

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Publication number
WO2023160125A1
WO2023160125A1 PCT/CN2022/138120 CN2022138120W WO2023160125A1 WO 2023160125 A1 WO2023160125 A1 WO 2023160125A1 CN 2022138120 W CN2022138120 W CN 2022138120W WO 2023160125 A1 WO2023160125 A1 WO 2023160125A1
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WO
WIPO (PCT)
Prior art keywords
light
keycap
circuit board
conductive
thin film
Prior art date
Application number
PCT/CN2022/138120
Other languages
English (en)
French (fr)
Inventor
李海涛
王晓光
霍国亮
Original Assignee
荣耀终端有限公司
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 荣耀终端有限公司 filed Critical 荣耀终端有限公司
Publication of WO2023160125A1 publication Critical patent/WO2023160125A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H01H13/7065—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys characterised by the mechanism between keys and layered keyboards
    • H01H13/7073—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys characterised by the mechanism between keys and layered keyboards characterised by springs, e.g. Euler springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/002—Calculator, computer

Definitions

  • the present application relates to the field of electronic technology, in particular to a luminous keyboard and electronic equipment.
  • the keyboard can also have a light-emitting function.
  • the light refracted to the keycap of the keyboard is weak, resulting in uneven brightness of the characters on the keycap, unclear character display, poor backlight effect of the keycap, and easy triggering by the user. .
  • the problem of poor backlight effect of the keyboard is generally solved by increasing the number of light emitting devices.
  • this requires adjusting the overall structural layout of the keyboard, resulting in a thicker keyboard, which is not conducive to the thin design of the electronic device.
  • the embodiment of the present application provides a luminous keyboard and electronic equipment, which can improve the backlight effect of the keyboard and improve the light transmission effect of the light-transmitting part on the keycap without increasing the thickness of the keyboard, thereby improving the backlight of the keyboard. Effect.
  • the embodiment of the present application provides a luminous keyboard, including: a thin-film circuit board, a keycap, a light-transmitting elastic member, and a light-emitting device; the keycap and the light-emitting device are respectively located on both sides of the thin-film circuit board in the thickness direction
  • the keycap has a light-transmitting part, and the keycap is movable relative to the film circuit board in the thickness direction of the film circuit board to switch between the pressed position and the release position; the elastic member abuts between the keycap and the film circuit board Between them, the elastic member includes a trigger part; the film circuit board includes a light-transmitting substrate and a light-transmitting switch, the switch is arranged on the substrate and is opposite to the trigger part; at least part of the light generated by the light-emitting device enters through the switch and the elastic member The light-transmitting part; wherein, at the pressed position of the keycap, the trigger part is in contact with the film circuit board to trigger the
  • the substrate is light-transmitting
  • the switch corresponding to the keycap is also light-transmitting, so that more light can be transmitted to the keycap without increasing the number of light-emitting devices , enhance the light at the keycap, improve the uniformity of the light at the keycap, thereby improving the backlight effect of the keyboard.
  • the thin film circuit board includes: a first circuit trace and a second circuit trace.
  • the first circuit trace is arranged on the substrate and includes a first conductive contact;
  • the second circuit trace is arranged on the substrate, the second circuit trace is spaced apart from the first circuit trace, and the second circuit trace includes a second conductive contact.
  • the contacts, the first conductive contact and the second conductive contact form a switch, and at the pressed position of the keycap, the first conductive contact and the second conductive contact form electrical conduction.
  • the thin film circuit board includes a first insulating film layer, and both the first circuit trace and the second circuit trace are formed on the surface of the first insulating film layer facing the keycap;
  • a light-transmitting conductive part is provided on the trigger part, and at the pressed position of the keycap, the conductive part is in contact with both the first conductive contact and the second conductive contact to form electrical conduction.
  • the conductive part is a conductive layer attached to at least part of the surface of the trigger part facing the switch.
  • the conductive layer is made of silver nanowires and/or graphene.
  • the conductive portion is at least partially defined by the trigger portion. Therefore, not only the structure is simple, but also the cost is low.
  • the trigger part includes a body part and a conflicting convex part, the body part abuts against the keycap, the conflicting convex part protrudes from the side surface of the body part facing the switch, and the conductive part forms on the conflicting convex part. Therefore, not only the structure is simple, but also the cost is low.
  • the elastic member includes an abutment ring, the abutment ring is disposed around an edge of the body part, and the abutment ring is abutted between the keycap and the thin film circuit board.
  • the abutting ring is abutted between the keycap and the film circuit board, and is arranged around the edge of the main body. That is to say, the abutting ring is arranged around the outer periphery of the abutting protrusion and the switch, so that the conductive part and the switch can be protected by the integral structure formed by the abutting ring and the main body, and the waterproof and dustproof effect can be improved.
  • the elastic member is integrally conductive, and the material of the elastic member and the conductive portion is the same.
  • the conductive part includes: a light-transmitting substrate and a light-transmitting conductive material, and the conductive material is evenly distributed in the substrate.
  • the conductive material is silver nanowires and/or graphene.
  • the conductive portion can have good light transmittance and conductivity.
  • the material of the substrate can be rubber or silica gel.
  • the material of the main body can be rubber or silicone.
  • the material of the abutment ring can be rubber or silicone.
  • the material of the above-mentioned body portion and the abutment ring can be the same as that of the base material.
  • the elastic part can be integrally formed.
  • the thin film circuit board includes a second insulating thin film layer, and the second insulating thin film layer is disposed on the surface of the first insulating thin film layer facing the keycap, and covers the first circuit wiring and the second circuit wiring, the second insulating film layer has an avoidance hole opposite to the switch.
  • the substrate includes: a first insulating film layer, an insulating spacer layer and a second insulating film layer, and the first insulating film layer, the insulating spacer layer and the second insulating film layer are on the keycap
  • the first circuit traces are formed on the surface of the first insulating film layer facing the second insulating film layer
  • the second circuit traces are formed on the surface of the second insulating film layer facing the first insulating film layer.
  • the first conductive contact and the second conductive contact are opposite in the direction of movement of the keycap, and an escape channel is formed on the insulating isolation layer corresponding to the position of the switch; at the pressed position of the keycap, the first conductive contact and the second conductive contact The second conductive contact contacts in the avoidance channel to form electrical continuity.
  • the first circuit traces are transparent, that is to say, the first circuit traces are entirely transparent. In this way, not only is it easier for more light to be transmitted to the keycap, but it is also beneficial to use one material to process the first circuit trace, without using two different materials to process the first circuit and the first conductive contact separately, thereby The processing technology of the first circuit trace is simplified.
  • the second circuit traces are transparent, that is to say, the second circuit traces are entirely transparent. In this way, not only is it easier for more light to be transmitted to the keycap, but it is also beneficial to use one material to process the second circuit traces, without using two different materials to process the second circuit and the second conductive contact separately, thereby The processing technology of the second circuit wiring is simplified. Exemplarily, both the first circuit trace and the second circuit trace are transparent.
  • the material of the first circuit trace is silver nanowire and/or graphene. Thereby, both translucency and conductivity can be achieved.
  • the material of the second circuit trace is silver nanowire and/or graphene. Thereby, both translucency and conductivity can be achieved.
  • the material of the first circuit trace and the second circuit trace is the same.
  • the luminous keyboard includes: a backlight module, the backlight module is stacked on the side of the thin film circuit board away from the keycap, and the backlight module is used to generate Light guide switch.
  • the backlight module includes: a light guide sheet and a reflective sheet.
  • the light guide sheet is used to guide the light generated by the light-emitting device to the switch; the reflection sheet is arranged on the side of the light guide sheet away from the film circuit board.
  • the light emitting device can provide light to the light guide sheet.
  • the light guide sheet When light enters the light guide sheet, it can diffuse to the entire light guide sheet. And part of the light can be irradiated to the switch under the action of the light guide sheet.
  • a part of the light is scattered on the reflective sheet, and the part of the light that is dissipated on the reflective sheet is reflected toward the switch under the action of the reflective sheet, so that at least part of the light is directed towards the switch. Therefore, under the action of the reflecting sheet, the utilization rate of the light provided by the light-emitting device is improved, and more light is refracted to the keycap.
  • light guiding bumps are provided at positions corresponding to the light transmission holes on the light guiding sheet, and the light guiding bumps protrude from the surface of the light guiding sheet .
  • the light guide bump and the light guide sheet are integrally formed, which is beneficial to improve the light guide effect, and can also improve the connection strength between the light guide sheet and the light guide bump, simplify the processing technology of the two, and reduce the production cost. cost.
  • the light guiding bumps can protrude into the light transmission holes.
  • the reflective sheet may be a reflective layer formed on the surface of the light guide sheet away from the keycap.
  • the material of the reflective layer includes but not limited to metal (such as silver, copper, etc.).
  • the reflective sheet includes a reflective base plate and a reflective layer disposed on the base plate.
  • the material of the reflective layer includes but not limited to metal (such as silver, copper, etc.).
  • the reflective sheet is provided with a mounting hole, and at least part of the light emitting device is located in the mounting hole. In this way, the overall space occupied by the light-emitting device and the backlight module can be saved, the compactness of the keyboard structure can be realized, and the light generated by the light-emitting device can be guided to the keycap.
  • the light guide sheet has a light guide hole facing the installation hole, and the light output end of the light emitting device is located in the light guide hole.
  • the light guide hole and the switch may be directly opposite.
  • the backlight module further includes a light-shielding sheet, the light-shielding sheet is disposed between the light guide sheet and the thin film circuit board, and the light-shielding sheet has a light leakage portion facing the switch.
  • the luminous keyboard further includes a bottom plate, the bottom plate is fixed between the film circuit board and the backlight module, the bottom plate has a light-transmitting hole facing the switch, and the keycap and the bottom plate can be Mobile connected.
  • the present application provides an electronic device, including: a main board and the luminous keyboard in any one of the above embodiments.
  • the thin film circuit board and the light emitting device are electrically connected with the main board.
  • the electronic device of the second aspect provided above includes the light-permeable keyboard in any of the above embodiments, therefore, the beneficial effects it can achieve can refer to the beneficial effects of the keyboard provided above, I won't repeat them here.
  • FIG. 1 is a perspective view of an electronic device provided in an embodiment of the present application
  • Fig. 2 is a schematic cross-sectional structural diagram of the keyboard host in the electronic device shown in Fig. 1;
  • Fig. 3 is according to the structural representation of the keyboard in the keyboard host shown in Fig. 1 and Fig. 2;
  • Fig. 4 is an exploded diagram according to the keyboard shown in Fig. 3;
  • Fig. 5 is a schematic partial cross-sectional view of the keyboard shown in Fig. 3 in the A-A direction;
  • Fig. 6 is a schematic partial cross-sectional view of the keyboard shown in Fig. 3 in the B-B direction;
  • Fig. 7 is an enlarged view according to the part circled at C in the keyboard shown in Fig. 6;
  • Fig. 8 is a schematic cross-sectional view of the thin film circuit board shown in Fig. 3-Fig. 7;
  • Fig. 9 is an exploded view according to the thin film circuit board shown in Fig. 8.
  • Fig. 10 is a partial cross-sectional schematic diagram of the keyboard shown in Fig. 6 omitting the lifting parts, wherein the keycap is in a released state;
  • Fig. 11 is a partial cross-sectional schematic diagram of the keyboard shown in Fig. 6 omitting the lifting parts, wherein the keycap is in a pressed state;
  • Fig. 12 is a perspective view of the elastic member in the keyboard shown in Fig. 10-Fig. 11;
  • FIG. 13 is an exploded view of thin film circuit boards in other embodiments of the present application.
  • Fig. 14 is a schematic partial cross-sectional view of a keyboard using the thin film circuit board shown in Fig. 13, wherein the keycap is in a released state;
  • Fig. 15 is a schematic partial cross-sectional view of a keyboard using the thin film circuit board shown in Fig. 13, wherein the keycap is in a pressed state;
  • Fig. 16 is a schematic diagram of cooperation of the first circuit trace, the second circuit trace and the conductive part in the pressed state according to the thin film circuit board shown in Fig. 13-Fig. 14;
  • Fig. 17 is a schematic diagram of cooperation of the first circuit trace, the second circuit trace and the conductive part in the pressed state in the thin film circuit board of some other embodiments of the present application;
  • Fig. 18 is a perspective view of an elastic member used in the keyboard shown in Figs. 14-15 according to some embodiments of the present application;
  • FIG. 19 is a perspective view of an elastic member used in the keyboard shown in FIGS. 14-15 according to other embodiments of the present application;
  • Fig. 20 is a perspective view of an elastic member used in the keyboard shown in Fig. 14-Fig. 15 according to some other embodiments of the present application;
  • Fig. 21 is a perspective view of an elastic member used in the keyboard shown in Figs. 14-15 according to some other embodiments of the present application;
  • FIG. 22 is a perspective view of an elastic member used in the keyboard shown in FIGS. 14-15 according to other embodiments of the present application;
  • Fig. 23 is a schematic partial cross-sectional view of a keyboard according to some other embodiments.
  • keyboard 10 bottom plate 1; light-transmitting hole 11; keycap 2; lifting part 3; first lifting part 31; second lifting part 32;
  • first and second are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features.
  • a feature defined as “first” and “second” may explicitly or implicitly include one or more of these features.
  • connection can be detachable
  • connection can also be non-detachable connection; it can be a direct connection or an indirect connection through an intermediary.
  • fixed connection means that they are connected to each other and the relative positional relationship after connection remains unchanged.
  • Rotally connected refers to being connected to each other and capable of relative rotation after being connected.
  • Slide connection refers to being connected to each other and being able to slide relative to each other after being connected.
  • the term “comprising”, “comprising” or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase “comprising a " does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.
  • the present application provides an electronic device.
  • the electronic device is a type of electronic device with a luminous keyboard.
  • the electronic equipment includes but is not limited to tablet personal computer, laptop computer, personal digital assistant (PDA), personal computer, notebook computer (notebook), and vehicle equipment and other electronic equipment.
  • FIG. 1 is a perspective view of an electronic device 1000 provided by an embodiment of the present application.
  • the electronic device 1000 is a notebook computer.
  • the electronic device 1000 includes a display 200 and a keyboard host 100 .
  • the display 200 is used to display images, videos, and the like.
  • the display 200 can be, but not limited to, an organic light emitting diode (organic light-emitting diode, OLED) display, an active matrix organic light emitting diode or an active matrix organic light emitting diode (active-matrix organic light-emitting diode, AMOLED) display , mini organic light-emitting diode (mini organic light-emitting diode) display, micro light-emitting diode (micro organic light-emitting diode) display, micro organic light-emitting diode (micro organic light-emitting diode) display, quantum dot light-emitting diode (quantum dot light emitting diodes, QLED) displays, etc.
  • OLED organic light-emitting diode
  • AMOLED active matrix organic light-emitting diode
  • mini organic light-emitting diode mini organic light-emitting diode
  • the keyboard host 100 is rotatably connected to the display 200 .
  • the keyboard host 100 is used to input instructions and data, and controls the display 200 to display images and videos according to the input instructions and data. Meanwhile, the keyboard host 100 is also used to play voice or music.
  • the electronic device 1000 is switchable between an open state and a closed state.
  • the display 200 and the keyboard host 100 form an angle greater than 0° and less than 180°.
  • the display 200 covers the keyboard main body 100 , and the display surface of the display 200 is opposite to the keyboard surface of the keyboard main body 100 .
  • an XYZ coordinate system is established for the keyboard host 100 .
  • the extension direction of the rotation axes of the keyboard host 100 and the display 200 as the X-axis direction
  • the thickness direction of the keyboard host 100 as the Z-axis direction
  • the direction perpendicular to both the X-axis direction and the Z-axis direction as the Y-axis direction.
  • FIG. 2 is a schematic cross-sectional structure diagram of the keyboard host 100 in the electronic device 1000 shown in FIG. 1 .
  • the keyboard host 100 includes a casing 20 , a main board 40 , and a keyboard 10 .
  • FIG. 2 only schematically shows some components included in the keyboard host 100 , and the actual shape, actual size, actual position and actual structure of these components are not limited by FIG. 2 and the following figures.
  • the shell 20 is used to protect the internal structure of the keyboard host 100 .
  • the material of the shell 20 includes but not limited to plastic and metal.
  • the shell 20 can be a structural whole, or can be formed by assembling a plurality of parts.
  • the shell 20 includes a C shell 201 and a D shell 202 .
  • the C shell 201 and the D shell 202 are joined together to enclose the inner accommodation space of the shell 20 .
  • the C shell 201 and the D shell 202 are aligned in the Z direction to enclose the inner accommodation space of the shell 20 .
  • the C shell 201 and the D shell 202 can be fixed by clipping, can also be fixed by gluing, and can also be fixed by screw connection, which is not specifically limited here.
  • the mainboard 40 is fixed in the casing 20 .
  • the mainboard 40 is fixed in the housing 20 indirectly or directly.
  • the main board 40 can be fixed in the housing 20 by means of threaded connection, clamping, welding and the like.
  • the main board 40 is used for integrating the control chip.
  • the control chip can be, for example, an application processor (application processor, AP), double data rate synchronous dynamic random access memory (double data rate, DDR), and universal flash storage (universal flash storage, UFS).
  • the main board 40 can be a rigid circuit board, a flexible circuit board, or a combination of soft and hard circuit boards.
  • the main board 40 may use an FR-4 dielectric board, or a Rogers (Rogers) dielectric board, or a mixed media board of FR-4 and Rogers, and so on.
  • FR-4 is a code name of a flame-resistant material grade
  • Rogers dielectric board is a high-frequency board.
  • the keyboard 10 is used to input instructions and data.
  • the keyboard 10 is electrically connected to the main board 40 , and the main board 40 is used for receiving instructions and data input by the keyboard 10 .
  • FIG. 3 is a structural diagram of the keyboard 10 in the keyboard host 100 shown in FIG. 1 and FIG. 2 ;
  • FIG. 4 is an exploded view of the keyboard 10 shown in FIG. 3 .
  • the keyboard 10 includes: a bottom plate 1 , a keycap 2 , a lifting component 3 , a light-transmitting film circuit board 4 , a light-transmitting elastic member 5 , a backlight module 6 and a light emitting device 7 .
  • FIGS. 3-4 only schematically show some components included in the keyboard 10 , and the actual shape, actual size, actual position and actual configuration of these components are not limited by FIGS. 3-4 .
  • the bottom plate 1 serves as the structural “skeleton” of the keyboard 10 , and is mainly used to support and fix the backlight module 6 , the light emitting device 7 , the keycap 2 , the lifting component 3 and the thin film circuit board 4 .
  • the bottom plate 1 is located in the inner accommodation space of the housing 20 .
  • the bottom plate 1 can be fixed on the C shell 201 .
  • the bottom plate 1 is fixed to the C-shell 201 by means of gluing, clamping, screwing, riveting and the like.
  • the base plate 1 can also be fixed on the D shell 202 .
  • the bottom plate 1 is in the shape of a substantially rectangular flat plate.
  • the material of the bottom plate 1 includes but not limited to metal, plastic and a combination of the two.
  • the base plate 1 has a light-transmitting hole 11 penetrating through the base plate 1 in the thickness direction of the base plate 1 (ie, the Z-axis direction).
  • the keycap 2 is connected to the base plate 1 . Specifically, the keycap 2 has a pressed position and a released position. The keycap 2 is movable relative to the base plate 1 in the thickness direction of the base plate 1 (ie, in the direction of the Z axis) to switch between a pressed position and a released position. The distance between the keycap 2 and the bottom plate 1 at the release position is greater than the distance between the keycap 2 and the bottom plate 1 at the pressed position. There can be multiple keycaps 2. In the following description, the keycap 2 is taken as an example for illustration.
  • the C shell 201 is provided with an avoidance opening 201a corresponding to the position of each keycap 2 (combined with FIG. 2 ).
  • the keycap 2 protrudes out of the C-shell 201 through the escape opening 201a.
  • the keycap 2 has a light-transmitting portion (not shown).
  • the keycap 2 is opposite to the light transmission hole 11 . In this way, the light passing through the light-transmitting hole 11 can propagate to the light-transmitting part and pass through the light-transmitting part, so that the user can display graphics according to the light passing through the light-transmitting part in a dark environment. Select the keycap 2 that needs to be pressed, so as to improve the accuracy of the user using the keyboard 10 to input information.
  • the shape of the light-transmitting part includes, but is not limited to, the style of English letters, punctuation marks, Chinese radicals, animal figures or other graphic styles that serve as reminders or decorations.
  • the material of keycap 2 includes but not limited to plastics.
  • FIG. 5 is a schematic partial cross-sectional view of the keyboard 10 shown in FIG. 3 along the direction A-A
  • FIG. 6 is a schematic partial cross-sectional view of the keyboard 10 shown in FIG. 3 along the direction B-B.
  • the lifting part 3 is connected between the keycap 2 and the bottom plate 1 .
  • the keycap 2 moves relative to the bottom plate 1 between a pressed position and a released position via the lifting member 3 .
  • the lifting part 3 is configured as a scissors-like structure.
  • the lifting component 3 includes a first lifting member 31 and a second lifting member 32 .
  • the first lifting member 31 and the second lifting member 32 are arranged crosswise, and the first lifting member 31 and the second lifting member 32 are pivotally connected at the intersection position.
  • the first lifting member 31 is movably connected between the keycap 2 and the bottom plate 1
  • the second lifting member 32 is movably connected between the keycap 2 and the bottom plate 1 .
  • the keycap 2 can move between the pressed position and the released position relative to the base plate 1 through the scissors connection design of the first lifting member 31 and the second lifting member 32 .
  • a plurality of lifting components 3 are arranged between each keycap 2 and the bottom plate 1 .
  • two lifting components 3 are arranged between each keycap 2 and the bottom plate 1 .
  • a lifting component 3 is arranged between each keycap 2 and the bottom plate 1 .
  • the present application does not limit the specific number of lifting components 3 between each keyboard 10 and the bottom plate 1 .
  • the backlight module 6 is located on the side of the bottom plate 1 away from the keycap 2 . Moreover, the backlight module 6 and the base plate 1 are stacked. The backlight module 6 is used to guide the light generated by the light emitting device 7 to the light transmission hole 11 . In this way, the light can be refracted onto the keycap 2 through the light-transmitting hole 11 , so that the keyboard 10 can emit light. It can be understood that when the electronic device 1000 includes the backlight module 6, the electronic device 1000 may not include the above-mentioned bottom plate 1, but the backlight module 6 is used to support the film circuit board 4, the keycap 2 and the elastic member 5 wait. In other examples, the electronic device 1000 may not include the backlight module 6 .
  • the backlight module 6 includes a light guide sheet 61 and a reflective sheet 62 .
  • the light guide sheet 61 and the reflective sheet 62 are stacked.
  • the reflective sheet 62 is disposed on a side of the light guide sheet 61 away from the keycap 2 .
  • the light emitting device 7 can provide light to the light guide sheet 61 . When light enters the light guide sheet 61 , it can diffuse to the entire light guide sheet 61 . And a part of the light can directly enter the light transmission hole 11 upwards under the action of the light guide sheet 61 .
  • a part of the light is scattered downward to the reflective sheet 62 , and the part of the light that is dissipated to the reflective sheet 62 is reflected upward by the reflective sheet 62 , so that at least part of the light enters the light transmission hole 11 . Therefore, under the action of the reflecting sheet 62 , the utilization rate of the light provided by the light-emitting device 7 is improved, and more light is refracted to the keycap 2 through the light-transmitting hole 11 .
  • the material of the light guide sheet 61 includes but not limited to polycarbonate and/or acrylic plastic.
  • the light guiding sheet 61 is provided with light guiding bumps at positions corresponding to the light transmission holes 11 , and the light guiding bumps protrude from the surface of the light guiding sheet 61 .
  • the light guide bumps and the light guide sheet 61 are integrally formed, which is beneficial to improve the light guide effect, and can also improve the connection strength between the light guide sheet 61 and the light guide bumps, simplifying the processing technology of the two, reduce manufacturing cost.
  • the present application is not limited thereto.
  • the light guide bumps and the light guide sheet 61 may also be adhesively connected through a light-transmitting adhesive layer.
  • the light guiding bumps can extend into the light transmission holes 11 .
  • the light guide bumps may not protrude into the light transmission holes 11 .
  • the light guide bumps may not be provided on the light guide sheet 61 .
  • the reflective sheet 62 may be a reflective layer formed on the surface of the light guide sheet 61 facing away from the keycap 2 .
  • the material of the reflective layer includes but not limited to metal (such as silver, copper, etc.).
  • the reflective sheet 62 includes a reflective base plate and a reflective layer disposed on the base plate.
  • the material of the reflective layer includes but not limited to metal (such as silver, copper, etc.).
  • FIG. 7 is an enlarged view of the part circled at C in the keyboard 10 shown in FIG. 6 .
  • the reflective sheet 62 is provided with an installation hole 621 penetrating through the reflective sheet 62 in the thickness direction of the reflective sheet 62 .
  • At least part of the light emitting device 7 is located in the installation hole 621 . In this way, the overall space occupied by the light emitting device 7 and the backlight module 6 can be saved, the structure of the keyboard 10 can be compacted, and the light generated by the light emitting device 7 can be guided to the keycap 2 .
  • the layout of the light emitting device 7 and the backlight module 6 is not limited to the one shown above, and in other examples, the light emitting device 7 can also be located on the side facing the outer peripheral edge of the backlight module 6 . It only needs to ensure that the light emitting device 7 is located on the side of the base plate 1 away from the keycap 2 .
  • the light guide sheet 61 has a light guide hole 611 facing the mounting hole 621, and the light emitting device 7 is located in the light guide hole 611.
  • the light guide hole 611 and the light transmission hole 11 may face directly.
  • the present application is not limited thereto.
  • the light guide hole 611 and the light transmission hole 11 may also be staggered.
  • the backlight module 6 further includes a light-shielding film 63 .
  • the light-shielding sheet 63 is disposed between the light-guiding sheet 61 and the bottom plate 1 , and the light-shielding sheet 63 has a light leakage portion 631 facing the light-transmitting hole 11 .
  • the light provided by the light-emitting device 7 to the light-guiding sheet 61 will be continuously reflected between the light-shielding sheet 63 and the reflecting sheet 62, thereby facilitating more light to enter the light-transmitting hole 11 after passing through the light-leaking portion 631, and then Improving the utilization rate of the light provided by the light emitting device 7 is beneficial for more light to be refracted onto the keycap 2 through the light transmission hole 11 .
  • the light shielding sheet 63 may be a light shielding layer formed on the surface of the light guide sheet 61 facing the keycap 2 .
  • the material of the light-shielding layer includes but not limited to black ink.
  • the position of the light shielding layer corresponding to the light transmission hole 11 is hollowed out to form a light leakage portion 631 .
  • the light-shielding sheet 63 includes a light-transmitting substrate plate and a light-shielding layer disposed on the base plate, and the material of the light-shielding layer includes but not limited to black ink.
  • the position of the light-shielding layer corresponding to the light-transmitting hole 11 is hollowed out, so that the portion of the base plate facing the light-transmitting hole 11 and the hollowed-out portion of the light-shielding layer jointly define a light leakage portion 631 .
  • the light-shielding sheet 63 may not be provided in the backlight module 6 , but the base plate 1 with a light-shielding function may be used to play the role of the light-shielding sheet 63 . In this way, the thickness of the backlight module 6 can be reduced, which is beneficial to reducing the overall thickness of the keyboard 10 and reducing the manufacturing cost of the keyboard 10 .
  • the light emitting device 7 and the backlight module 6 can be integrated into one body.
  • the backlight module 6 may be a backlight module including LED lamps or an RGB module including cold light sheets.
  • the light emitting device 7 and the backlight module 6 can also be independent of each other.
  • the light emitting device 7 can be electrically connected to the main board 40 through the wiring structure 9 , and the light emitting device 7 is fixed on the wiring structure 9 .
  • the light emitting device 7 can be fixed on the wiring structure 9 by means of welding, clamping or gluing.
  • the wiring structure may be a flexible circuit board.
  • the light emitting device 7 includes, but is not limited to, an LED lamp.
  • the thin film circuit board 4 is disposed on the side of the base plate 1 away from the backlight module 6 , and is stacked with the base plate 1 and the backlight module 6 . That is to say, the bottom plate 1 is located between the thin film circuit board 4 and the backlight module 6 , and the bottom plate 1 , the thin film circuit board 4 and the backlight module 6 are stacked. In this way, the base plate 1 can be used to support and fix the thin film wiring board 4 .
  • the connection methods between the thin film circuit board 4 and the base plate 1 include but not limited to gluing, clamping, screwing or welding.
  • the thin film circuit board 4 is provided with a relief hole 4a penetrating through the thin film circuit board 4 (combined with FIG. 4 ).
  • the keycap 2 is located on the side of the thin film circuit board 4 away from the backlight module 6 .
  • the relief hole 4a is used for passing the lifting component 3 so as to realize the connection between the keycap 2 and the bottom plate 1 .
  • the thin film circuit board 4 is electrically connected to the main board 40 through the electrical connection structure 8 (combined with FIG. 4 ).
  • FIG. 8 is a schematic cross-sectional view of the thin film circuit board 4 shown in FIGS. 3-7 ;
  • FIG. 9 is an exploded view of the thin film circuit board 4 shown in FIG. 8 .
  • the thin film circuit board 4 includes: a light-transmitting switch 42 and a light-transmitting substrate 41 .
  • the switch 42 is disposed on the substrate 41 .
  • the switch 42 is opposite to the light transmission hole 11 .
  • the substrate 41 includes a first insulating thin film layer 411 , an insulating isolation layer 413 and a second insulating thin film layer 412 .
  • the first insulating film layer 411 , the insulating isolation layer 413 and the second insulating film layer 412 are sequentially stacked in the moving direction of the keycap 2 (ie, the Z-axis direction).
  • the insulating isolation layer 413 is located on the first insulating film layer 411 and the second insulating film layer 412 to isolate the first insulating film layer 411 from the second insulating film layer 412 .
  • the second insulating film layer 412 is located on a side of the first insulating film layer 411 away from the base plate 1 .
  • the materials of the first insulating film layer 411 , the insulating isolation layer 413 and the second insulating film layer 412 may be the same or different.
  • the first insulating film layer 411 , the insulating isolation layer 413 and the second insulating film layer 412 may be made of plastic.
  • the first insulating film layer 411 , the insulating isolation layer 413 and the second insulating film layer 412 may be polyethylene terephthalate (PET) film or polycarbonate (Polycarbonate, PC) film. It only needs to ensure that the materials used to make the first insulating film layer 411 , the insulating isolation layer 413 and the second insulating film layer 412 have light transmittance.
  • the thin film circuit board 4 further includes a first circuit trace 414 and a second circuit trace 415 .
  • One of the first circuit traces 414 and the second circuit traces 415 is a positive trace, and the other is a negative trace.
  • the first circuit trace 414 is formed on the surface of the first insulating film layer 411 facing the second insulating film layer 412 .
  • the second circuit trace 415 is formed on the surface of the second insulating film layer 412 facing the first insulating film layer 411 .
  • first circuit traces 414 and the second circuit traces 415 are formed on different film layers, it is beneficial to use the insulating isolation layer 413 to separate the first circuit traces 414 and the second circuit traces 415. , improve the reliability of the thin film circuit board 4 work.
  • the first circuit trace 414 includes a first circuit 4141 and a first conductive contact 4142 .
  • the first conductive contact 4142 is electrically connected to the first circuit 4141 .
  • the second circuit trace 415 includes a second circuit 4151 and a second conductive contact 4152 .
  • the second conductive contact 4152 is electrically connected to the second circuit 4151 .
  • the first conductive contact 4142 and the second conductive contact 4152 are oppositely arranged in the moving direction of the keycap 2 (ie, the Z-axis direction). In this way, the corresponding first conductive contact 4142 and the second conductive contact 4152 can form the switch 42 .
  • the shape of the first conductive contact 4142 includes but not limited to circle, sector, semicircle, rectangle, ellipse or special shape.
  • the shape of the second conductive contact 4152 includes but not limited to circle, sector, semicircle, rectangle, ellipse or special shape. In order to improve the contact reliability of the first conductive contact 4142 and the second conductive contact 4152 , the first conductive contact 4142 and the second conductive contact 4152 have the same shape.
  • an avoidance channel 4131 is provided on the insulating isolation layer 413 corresponding to the switch 42 .
  • the first insulating film layer 411 and the second insulating film layer 412 are relatively close to each other under force, and when the keycap 2 moves to the pressed position, the first conductive contact 4142 Contact with the second conductive contact 4152 in the avoidance channel 4131 to form electrical conduction.
  • the first conductive contact 4142 and the second conductive contact 4152 are insulated and spaced apart.
  • Fig. 10 is a schematic partial cross-sectional view of the keyboard 10 according to Fig. 6 omitting the lifting part 3, wherein the keycap 2 is in a released state;
  • Fig. 11 is according to Fig.
  • a partial cross-sectional schematic diagram of the keyboard 10 with the lifting component 3 is shown, wherein the keycap 2 is in a pressed state.
  • the elastic member 5 abuts between the keycap 2 and the thin film circuit board 4 .
  • FIG. 12 is a perspective view of the elastic member 5 in the keyboard 10 shown in FIG. 10-FIG. 11 .
  • the elastic member 5 includes: a trigger portion 51 and an abutment ring 52 .
  • the contact ring 52 is arranged around the edge of the trigger part 51 .
  • the abutting ring 52 is abutted between the keycap 2 and the thin film circuit board 4 .
  • the trigger part 51 is opposite to the switch 42 . In the release position of the keycap 2 , the trigger part 51 is spaced apart from the thin film circuit board 4 , and in the pressed position of the keycap 2 , the trigger part 51 contacts the thin film circuit board 4 to trigger the switch 42 .
  • the elastic member 5 when the user presses the keycap 2 from the side facing the keycap 2 , the elastic member 5 will elastically deform to facilitate the further movement of the keycap 2 toward the bottom plate 1 .
  • the elastic member 5 can deform to a predetermined degree so that the trigger part 51 presses the film circuit board 4, so that the above-mentioned first insulating film layer 411 corresponds to the position of the trigger part 51
  • the position corresponding to the trigger part 51 of the second insulating film layer 412 is relatively close by force, so that the first conductive contact 4142 and the second conductive contact 4152 are contacted in the avoidance channel 4131 to form electrical conduction, so as to achieve the trigger purpose of switch 42.
  • the elastic member 5 after the user removes the pressing action on the keycap 2, the elastic member 5 returns to its original shape under the action of its own resilience, and during this process, the elastic member 5 drives the keycap 2 away from the bottom plate 1
  • the trigger part 51 is spaced from the film circuit board 4, like this, the position of the first insulating film layer 411 corresponding to the trigger part 51 and the position of the second insulating film layer 412 corresponding to the trigger part 51 are spaced apart,
  • the first conductive contact 4142 and the second conductive contact 4152 are insulated and spaced apart.
  • the trigger part 51 includes a body part 511 and a resisting convex part 512 .
  • the body part 511 is in the shape of a sheet.
  • the main body 511 is arranged substantially parallel to the thin film circuit board 4 (certain errors are allowed in actual products, for example, the angle between the main body 511 and the thin film circuit board 4 is within ⁇ 10°).
  • the abutment ring 52 is disposed around the edge of the main body portion 511 .
  • the resisting protrusion 512 protrudes from a side surface of the main body 511 facing the switch 42 .
  • the conflicting protrusion 512 is opposite to the switch 42 .
  • the resisting protrusion 512 can contact the thin film circuit board 4 to trigger the switch 42 .
  • the conflicting protrusion 512 on the main body 511 , it is beneficial to trigger the switch 42 under the condition that the elastic member 5 undergoes relatively small deformation, which is beneficial to improve the service life of the elastic member 5 .
  • the triggering portion 51 may not be provided with the conflicting convex portion 512 , but the main body portion 511 is used to trigger the switch 42 .
  • the direction indicated by the arrow in FIG. 11 is the propagation direction of light.
  • the light emitted by the light-emitting device 7 is directed to the light-transmitting hole 11 under the action of the light-guiding sheet 61 , reflecting sheet 62 and light-shielding sheet 63 , and the light entering the light-transmitting hole 11 is directed to the thin film circuit board 4 . Since the substrate 41 of the thin film circuit board 4 is light-transmissive, and the switches 42 (i.e.
  • the first conductive contact 4142 and the second conductive contact 4152) in the thin-film circuit board 4 are all light-transmissive, the light from the light-transmitting hole 11 can be relatively Most of them propagate upwards through the thin film circuit board 4 , and pass through the light-transmitting elastic member 5 to reach the light-transmitting part of the keyboard 10 .
  • the substrate 41 is transparent, and the switch 42 corresponding to the keycap 2 (that is, the first conductive contact 4142 and the second conductive contact 4152) is also transparent.
  • the light at the keycap 2 can be enhanced, and the uniformity of the light at the keycap 2 can be improved, thereby improving the backlight effect of the keyboard 10 .
  • the entire first circuit trace 414 is transparent to light. In this way, not only is it easier for more light to be transmitted to the keycap 2, but it is also beneficial to use one material to process the first circuit trace 414, without using two different materials to process the first circuit 4141 and the first conductive contact respectively. point 4142 , thereby simplifying the processing technology of the first circuit trace 414 .
  • the material of the first circuit trace 414 is silver nanowire.
  • Silver nanowires are nanometer-sized silver wires. Has good electrical conductivity and light transmission.
  • the present application is not limited thereto, and in other examples, the material of the first circuit trace 414 may also be graphene. Graphene has good electrical conductivity and light transmission.
  • the second circuit trace 415 is entirely light-transmissive. In this way, it is not only convenient for more light to be transmitted to the keycap 2, but also beneficial to use one material to process the second circuit trace 415, without using two different materials to process the second circuit 4151 and the second conductive contact respectively. point 4152, thereby simplifying the processing technology of the second circuit trace 415.
  • the material of the second circuit trace 415 is silver nanowire.
  • Silver nanowires are nanometer-sized silver wires. Has good electrical conductivity and light transmission.
  • the present application is not limited thereto, and in other examples, the material of the second circuit trace 415 may also be graphene. Graphene has good electrical conductivity and light transmission.
  • the first circuit trace 414 and the second circuit trace 415 are made of the same material.
  • FIG. 13 is an exploded view of a thin film circuit board 4 according to another embodiment of the present application
  • FIG. 14 is a partial cross-sectional schematic diagram of a keyboard 10 using the thin film circuit board 4 shown in FIG. 13, wherein, Keycap 2 is in the released state.
  • the difference between the embodiments shown in FIGS. 13 and 14 and the embodiments shown in FIGS. 1-12 is that the first circuit traces 414 and the second circuit traces 415 are formed at intervals on the first insulating film layer 411. On the surface facing the keycap 2.
  • the second insulation film layer 412 covers the surface of the insulation isolation layer 413 towards the key
  • the surface of the cap 2 covers the first circuit traces 414 and the second circuit traces 415, so as to protect the first circuit traces 414 and the second circuit traces 415 and improve the reliability of the thin film circuit board 4. sex.
  • an avoidance hole 4121 is provided on the second insulating film layer 412 corresponding to the avoidance channel 4131 , and the avoidance channel 4131 and the avoidance hole 4121 jointly define an avoidance space.
  • a light-transmitting conductive portion 53 is disposed on the trigger portion 51 . When the keycap 2 is at the release position, the conductive portion 53 is spaced apart from the film circuit board 4 , and the first conductive contact 4142 and the second conductive contact 4152 are spaced apart and not electrically connected.
  • Fig. 15 and Fig. 16 Fig. 15 is a partial cross-sectional schematic view of the keyboard 10 using the thin film circuit board 4 shown in Fig.
  • the direction indicated by the arrow in FIG. 15 is the propagation direction of light.
  • the light emitted by the light-emitting device 7 is directed to the light-transmitting hole 11 under the action of the light-guiding sheet 61 , reflecting sheet 62 and light-shielding sheet 63 , and the light entering the light-transmitting hole 11 is directed to the thin film circuit board 4 .
  • this part of light passes through the first insulating film layer 411 , the first circuit trace 414 and the second circuit trace 415 , the avoidance channel 4131 , the avoidance hole 4121 and the elastic member 5 in sequence, and then reaches the light-transmitting part of the keycap 2 .
  • the light-emitting device 7 The light generated will pass through the first circuit trace 414 and the second circuit trace 415 at the same time, and the light generated by the light emitting device 7 shown in FIG. 11 above passes through the first circuit trace 414 and the second circuit trace successively.
  • the light can pass through one layer of second circuit wiring 415 less on the way to reach the light-transmitting part, so that more light can reach the elastic member, and more light can reach the light-transmitting part. Improve the utilization of light.
  • the conductive part 53 can be used to realize the electrical conduction between the first conductive contact 4142 and the second conductive contact 4152 in the pressed state of the keycap 2, but also it will not Affects the propagation of light.
  • the shapes of the first conductive contact 4142 and the second conductive contact 4152 are both small semicircular, and the first conductive contact 4142 and the second conductive contact 4152 are formed on the first insulating film.
  • the layers 411 are arranged oppositely in the plane.
  • the second conductive contact 4152 includes two spaced apart in the plane where the first insulating film layer 411 is located.
  • the contacts 41521 of the two contacts 41521, the first conductive contact 4142 is interposed between the two contacts 41521.
  • the contact 41521 is fan-shaped.
  • the contact 41521 can also be in other shapes, such as rectangle, rhombus, oval or ellipse.
  • the shape of the first conductive contact 4142 is a combination of sector and rectangle.
  • FIG. 18 is a perspective view of the elastic member 5 used in the keyboard 10 shown in FIGS. 14-15 according to some embodiments of the present application.
  • the conductive portion 53 may be defined by the aforementioned conflicting protrusion 512 . In this way, not only the structure is simple, but also the cost is low.
  • the abutment ring 52 abuts between the keycap 2 and the thin film circuit board 4 , and surrounds the edge of the trigger portion 51 .
  • the abutment ring 52 is arranged around the outer periphery of the abutment protrusion 512 and the switch 42, so that the conductive part 53 and the switch 42 can be protected by the integral structure formed by the abutment ring 52 and the main body portion 511, thereby improving waterproof and dustproof Effect.
  • the conductive portion 53 includes a light-transmitting base material 531 and a light-transmitting conductive material 532 , wherein the conductive material 532 is uniformly distributed in the base material 531 .
  • the conductive material 532 is silver nanowires and/or graphene.
  • the conductive material 532 can also be other materials, as long as the conductive material 532 has light transmittance and conductivity.
  • the material of the base material 531 can be rubber or silica gel.
  • the material of the main body 511 can be rubber or silicone.
  • the material of the abutment ring 52 can be rubber or silicone.
  • the material of the above-mentioned body portion 511 and the contact ring 52 may be the same as that of the base material 531 .
  • the elastic member 5 can be formed as an integral part.
  • FIG. 19 is a perspective view of the elastic member 5 used in the keyboard 10 shown in FIGS. 14-15 according to other embodiments of the present application.
  • the conductive part 53 is defined by the trigger part 51 . That is to say, the conductive portion 53 may be jointly defined by the aforementioned conflicting protrusion 512 and the body portion 511 .
  • the material of the base material 531 in the conductive part 53 and the material of the contact ring 52 can be the same .
  • FIG. 20 is a perspective view of the elastic member 5 used in the keyboard 10 shown in FIGS. 14-15 according to some other embodiments of the present application.
  • the elastic member 5 as a whole may be conductive.
  • the material of the elastic member 5 is the same as that of the conductive portion 53 .
  • the elastic member 5 and the conductive portion 53 can be processed simultaneously by an integrated molding process, or the conductive portion 53 can be directly formed by the elastic member 5, which is beneficial to simplify the overall manufacturing of the elastic member 5 and the conductive portion 53 and reduce costs.
  • FIG. 21 is a perspective view of the elastic member 5 used in the keyboard 10 shown in FIGS. 14-15 according to some other embodiments of the present application.
  • the conductive portion 53 may be a structure independent of the elastic member 5 .
  • the conductive part 53 may be a conductive layer attached to at least part of the surface of the trigger part 51 facing the switch 42 .
  • a conductive layer can be processed on the elastic member 5 through a printing process.
  • the material of the conductive layer includes but not limited to silver nanowires and/or graphene.
  • the conductive layer is attached to the surface of the resisting protrusion 512 facing the switch 42 .
  • the abutment ring 52 abuts between the keycap 2 and the thin film circuit board 4 , and surrounds the edge of the trigger portion 51 . That is to say, the abutment ring 52 is arranged around the outer periphery of the abutment protrusion 512 and the switch 42, so that the conductive part 53 and the switch 42 can be protected by the integral structure formed by the abutment ring 52 and the main body portion 511, thereby improving waterproof and dustproof Effect.
  • FIG. 22 is a perspective view of the elastic member 5 used in the keyboard 10 shown in FIGS. 14-15 according to other embodiments of the present application.
  • the conductive layer is attached to the surface of the conflicting protrusion 512 facing the switch 42 and the surface of the body portion 511 facing the switch 42 .
  • FIG. 23 is a schematic partial cross-sectional view of the keyboard 10 according to some other embodiments.
  • the thin film circuit board 4 does not include an insulating isolation layer 413 .
  • the second insulating film layer is used to cover the surface of the first insulating film layer 411 facing the keycap 2 and to cover the first circuit traces 414 and the second circuit traces 415.
  • an avoidance hole 4121 is provided on the second insulating film layer 412 corresponding to the switch 42 .
  • the second insulating film layer may not be provided in the substrate 41, but only the insulating isolation layer 413 is used to cover the surface of the first insulating film layer 411 facing the elastic member 5 And cover the first circuit traces 414 and the second circuit traces 415; or, the substrate 41 only includes the first insulating thin film layer 411, and does not include the insulating isolation layer 413 and the second thin insulating film layer.

Landscapes

  • Push-Button Switches (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

一种可发光的键盘和电子设备。可发光的键盘包括：薄膜线路板、键帽、透光的弹性件和发光器件；键帽和发光器件分别位于薄膜线路板的厚度方向的两侧；键帽具有透光部,键帽相对于薄膜线路板在薄膜线路板的厚度方向上可移动；弹性件抵接于键帽与薄膜线路板之间，弹性件包括触发部；薄膜线路板包括透光的基板和透光的开关，开关设于基板，且与触发部相对；发光器件产生的光线中的至少部分穿过开关和弹性件射入透光部；其中，在键帽的被按压位置，触发部与薄膜线路板接触以触发开关；在键帽的释放位置，触发部与薄膜线路板间隔开。

Description

一种可发光的键盘和电子设备
本申请要求于2022年2月25日提交国家知识产权局、申请号为202210174431.4、发明名称为“一种可发光的键盘和电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及电子技术领域，尤其是涉及一种可发光的键盘和电子设备。
背景技术
得益于笔记本电脑的便携性和强大的处理能力，其已成为日常最重要的办公工具。为了提高笔记本电脑中键盘的良好的视觉体验，以及方便用户在光照不佳的环境中仍可准确按压键帽的位置以避免输入错误，键盘还可以具有发光的功能。对于可发光的键盘来说，折射到键盘的键帽处的光线较弱，导致键帽上的字符亮度不均匀，字符显示不清晰，键帽的背光效果较差，容易引发用户的误触发操作。
相关技术中，通常采用增加发光器件的数量的方式来解决键盘的背光效果差的问题。然而，这就需要对键盘的整体结构布局进行调整，导致键盘的厚度较厚，不利于电子设备的薄型化设计。
发明内容
本申请实施例提供一种可发光的键盘和电子设备，在不增大键盘的厚度的前提下，可以提高键盘的背光效果，提高键帽上透光部的透光效果，从而提高键盘的背光效果。
为达到上述目的，本申请采用如下技术方案：
第一方面，本申请实施例提供一种可发光的键盘，包括：薄膜线路板、键帽、透光的弹性件和发光器件；键帽和发光器件分别位于薄膜线路板的厚度方向的两侧；键帽具有透光部,键帽相对于薄膜线路板在薄膜线路板的厚度方向上可移动，以在被按压位置和释放位置之间切换；弹性件抵接于键帽与薄膜线路板之间，弹性件包括触发部；薄膜线路板包括透光的基板和透光的开关，开关设于基板，且与触发部相对；发光器件产生的光线中的至少部分穿过开关和弹性件射入透光部；其中，在键帽的被按压位置，触发部与薄膜线路板接触以触发开关；在键帽的释放位置，触发部与薄膜线路板间隔开。
在本申请实施例的键盘中，基板透光，并且与键帽对应的开关也透光，这样一来，在不增加发光器件的数量的前提下，可以有利于更多的光线传播到键帽，增强键帽处的光线，提高键帽处光线的均匀性，从而提高键盘的背光效果。
在本申请第一方面提供的一些实施例中，薄膜线路板包括：第一电路走线和第二电路走线。第一电路走线设于基板，且包括第一导电触点；第二电路走线设于基板，第二电路走线与第一电路走线间隔开设置，第二电路走线包括第二导电触点，第一导电触点和第二导电触点形成开关，在键帽的被按压位置，第一导电触点和第二导电触点形成电性导通。
在本申请第一方面提供的一些实施例中，薄膜线路板包括第一绝缘薄膜层，第一 电路走线和第二电路走线均形成于第一绝缘薄膜层的朝向键帽的表面上；触发部上设有透光的导电部，在键帽的被按压位置，导电部与第一导电触点和第二导电触点均接触而形成电性导通。这样设置，结构简单，便于加工。
在本申请第一方面提供的一些实施例中，导电部为附着于触发部的朝向开关的至少部分表面的导电层。
在本申请第一方面提供的一些实施例中，导电层的材质为银纳米线和/或石墨烯。
在本申请第一方面提供的一些实施例中，导电部由触发部的至少部分限定出。由此，不但结构简单，而且成本低。
在本申请第一方面提供的一些实施例中，触发部包括本体部和抵触凸部，本体部抵接于键帽，抵触凸部凸出于本体部的朝向开关的一侧表面，导电部形成于抵触凸部上。由此，不但结构简单，而且成本低。
在本申请第一方面提供的一些实施例中，弹性件包括抵接圈，抵接圈围设于本体部的边缘一周，且抵接圈抵接于键帽与薄膜线路板之间。对于弹性件来说，由于抵接圈抵接于键帽与薄膜线路板之间，且围设在本体部的边缘一周。也即抵接圈围设在抵触凸部和开关的外周，从而可以利用由抵接圈和本体部所形成的整体结构对导电部和开关进行防护，提高防水防尘的效果。
在本申请第一方面提供的一些实施例中，弹性件整体导电，且弹性件与导电部的材质相同。
在本申请第一方面提供的一些实施例中，导电部包括：透光的基材和透光的导电材料，导电材料均匀分布于基材中。
在本申请第一方面提供的一些实施例中，导电材料为银纳米线和/或石墨烯。由此，可以使得导电部具有良好的透光性和导电性。
为了提高基材的透光性以及降低基材的成本，基材的材质可以为橡胶或硅胶。
为了提高本体部的透光性以及降低本体部的成本，本体部的材质可以为橡胶或硅胶。
为了提高抵接圈的透光性以及降低抵接圈的成本，抵接圈的材质可以为橡胶或硅胶。
为了简化弹性件的加工以及提高弹性件各个结构之间的连接可靠性，上述的本体部以及抵接圈的材质可以与基材的材质相同。
为了提高弹性件的结构强度，简化弹性件的加工工艺，弹性件可以为一体成型件。
在本申请第一方面提供的一些实施例中，薄膜线路板包括第二绝缘薄膜层，第二绝缘薄膜层设于第一绝缘薄膜层的朝向键帽的表面上，且覆盖第一电路走线和第二电路走线，第二绝缘薄膜层上具有与开关相对的避让孔。
在本申请第一方面提供的一些实施例中，基板包括：第一绝缘薄膜层、绝缘隔离层和第二绝缘薄膜层，第一绝缘薄膜层、绝缘隔离层和第二绝缘薄膜层在键帽的移动方向上依次层叠设置，第一电路走线形成于第一绝缘薄膜层的朝向第二绝缘薄膜层的表面，第二电路走线形成于第二绝缘薄膜层的朝向第一绝缘薄膜层的表面，第一导电 触点和第二导电触点在键帽的移动方向上相对，绝缘隔离层上对应于开关的位置形成有避让通道；在键帽的被按压位置，第一导电触点和第二导电触点在避让通道内接触而形成电性导通。
在本申请第一方面提供的一些实施例中，第一电路走线透光，也就是说，第一电路走线整体透光。这样，不但便于更多的光线能够传播到键帽处，还有利于利用一种材质加工出第一电路走线，无需利用两种不同的材质分别加工第一电路和第一导电触点，从而简化第一电路走线的加工工艺。
在本申请第一方面提供的一些实施例中，第二电路走线透光，也就是说，第二电路走线整体透光。这样，不但便于更多的光线能够传播到键帽处，还有利于利用一种材质加工出第二电路走线，无需利用两种不同的材质分别加工第二电路和第二导电触点，从而简化第二电路走线的加工工艺。示例性的，第一电路走线和第二电路走线均透光。
在本申请第一方面提供的一些实施例中，第一电路走线的材质为银纳米线和/或石墨烯。由此，可以兼具透光性和导电性。
在本申请第一方面提供的一些实施例中，第二电路走线的材质为银纳米线和/或石墨烯。由此，可以兼具透光性和导电性。
为了进一步地简化加工工艺，第一电路走线和第二电路走线的材质相同。
在本申请第一方面提供的一些实施例中，可发光的键盘包括：背光模组，背光模组层叠设于薄膜线路板的背离键帽的一侧，背光模组用于将发光器件产生的光线导向开关。
在本申请第一方面提供的一些实施例中，背光模组包括：导光片和反射片。导光片用于将发光器件产生的光线导向开关；反射片设在导光片的背离薄膜线路板的一侧。这样一来，发光器件可以向导光片提供光线。光线射入导光片时，可以扩散至整个导光片。并且一部分光线可以在导光片的作用下射向开关。一部分光线则散射到反射片上，该部分散热到反射片上的光线在反射片的作用下向开关的方向反射，以使得该部分光线的至少部分射向开关。从而在反射片的作用下，提高发光器件所提供的光线的利用率，有利于更多的光线折射到键帽上。
在本申请第一方面提供的一些实施例中，为了提高导光效果，导光片的对应于透光孔的位置处设有导光凸点，导光凸点凸出于导光片的表面。
示例性的，导光凸点与导光片为一体成型件，这样有利于提高导光效果，并且还可以提高导光片与导光凸点的连接强度，简化二者的加工工艺，降低生产成本。
示例性的，为了进一步的提高导光凸点的导光效果，导光凸点可以伸入到透光孔内。
示例性的，反射片可以为形成于导光片的背离键帽的一侧表面的反射层。该反射层的材质包括但不限于金属(例如银、铜等)。
示例性的，反射片包括反射基材板和设置在该基材板上的反射层。该反射层的材质包括但不限于金属(例如银、铜等)。
在本申请第一方面提供的一些实施例中，反射片上设有安装孔，发光器件的至少部分位于安装孔内。这样，可以节省发光器件和背光模组整体所占用的空间，实现键 盘结构的紧凑性，并且还有利于发光器件所产生的光线被导向键帽。
在本申请第一方面提供的一些实施例中，导光片上具有与安装孔处正对的导光孔，发光器件的出光端位于导光孔内。这样可以进一步简化键盘的结构，合理优化键盘的结构布局，同时提高导光片的导光效果。
示例性的，为了进一步地提高发光器件发出的光线的利用率，导光孔与开关可以正对。
在本申请第一方面提供的一些实施例中，背光模组还包括遮光片，遮光片设于导光片与薄膜线路板之间，遮光片具有与开关正对的漏光部。
在本申请第一方面提供的一些实施例中，可发光的键盘还包括底板，底板固定于薄膜线路板与背光模组之间，底板具有与开关正对的透光孔，键帽与底板可移动地相连。
第二方面，本申请提供一种电子设备，包括：主板和上述任一实施例中的可发光的键盘。其中，薄膜线路板、发光器件均与主板电连接。
可以理解的，上述提供的第二方面的电子设备包括上述的任一实施例中的可透光的键盘，因此，其所能达到的有益效果可参考上文所提供的键盘中的有益效果，此处不再赘述。
附图说明
图1为本申请实施例提供的电子设备的立体图；
图2为根据图1所示的电子设备中键盘主机的截面结构示意图；
图3为根据图1和图2中所示的键盘主机中的键盘的结构示意图；
图4为根据图3所示的键盘的爆炸图；
图5为根据图3所示的键盘在A-A方向的局部剖视示意图；
图6为根据图3所示的键盘在B-B方向的局部剖视示意图；
图7为根据图6所示的键盘中的C处圈示部分的放大图；
图8为根据图3-图7中所示的薄膜线路板的剖视示意图；
图9为根据图8所示的薄膜线路板的爆炸图；
图10为根据图6所示的省略了升降部件的键盘的局部剖视示意图，其中，键帽处于释放状态；
图11为根据图6所示的省略了升降部件的键盘的局部剖视示意图，其中，键帽处于被按压状态；
图12为根据图10-图11中所示的键盘中的弹性件的立体图；
图13为本申请另一些实施例的薄膜线路板的爆炸图；
图14为采用图13所示的薄膜线路板的键盘的局部剖视示意图，其中，键帽处于释放状态；
图15为采用图13所示的薄膜线路板的键盘的局部剖视示意图，其中，键帽处于被按压状态；
图16为根据图13-图14中所示的薄膜线路板中的第一电路走线、第二电路走线以及导电部在被按压状态下的配合示意图；
图17为本申请再一些实施例的薄膜线路板中的第一电路走线、第二电路走线以 及导电部在被按压状态下的配合示意图；
图18为根据本申请一些实施例提供的用于图14-图15中所示的键盘的弹性件的立体图；
图19为根据本申请另一些实施例提供的用于图14-图15中所示的键盘的弹性件的立体图；
图20为根据本申请再一些实施例提供的用于图14-图15中所示的键盘的弹性件的立体图；
图21为根据本申请其它一些实施例提供的用于图14-图15中所示的键盘的弹性件的立体图；
图22为根据本申请其它另一些实施例提供的用于图14-图15中所示的键盘的弹性件的立体图；
图23为根据其它一些实施例的键盘的局部剖视示意图。
附图标记：
电子设备1000；
键盘主机100；
键盘10；底板1；透光孔11；键帽2；升降部件3；第一升降件31；第二升降件32；
薄膜线路板4；让位孔4a；基板41；第一绝缘薄膜层411；绝缘隔离层413；避让通道4131；第二绝缘薄膜层412；避让孔4121；第一电路走线414；第一电路4141；第一导电触点4142；第二电路走线415；第二电路4151；第二导电触点4152；触点41521；开关42；弹性件5；触发部51；本体部511；抵触凸部512；抵接圈52；导电部53；基材531；导电材料532；背光模组6；导光片61；导光孔611；反射片62；安装孔621；遮光片63；漏光部631；发光器件7；电连接结构8；外壳20；C壳201；避让口201a；D壳202；主板40；
显示器200。
具体实施方式
在本申请实施例中，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。
在本申请实施例的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，“连接”可以是可拆卸地连接，也可以是不可拆卸地连接；可以是直接连接，也可以通过中间媒介间接连接。其中，“固定连接”是指彼此连接且连接后的相对位置关系不变。“转动连接”是指彼此连接且连接后能够相对转动。“滑动连接”是指彼此连接且连接后能够相对滑动。
本申请实施例中所提到的方位用语，例如，“内”、“外”等，仅是参考附图的方向，因此，使用的方位用语是为了更好、更清楚地说明及理解本申请实施例，而不是指示或暗指所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请实施例的限制。此外，除非本申请中另有说明，否则本申请中所述的“多个”是指两个或两个以上。
在本申请实施例的描述中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
在本申请实施例中，“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。
本申请提供一种电子设备。该电子设备为具有可发光的键盘的一类电子设备。具体的，该电子设备包括但不限于平板电脑(tablet personal computer)、膝上型电脑(laptop computer)、个人数码助理(personal digital assistant，PDA)、个人计算机、笔记本电脑(notebook)、和车载设备等电子设备。
请参阅图1，图1为本申请实施例提供的电子设备1000的立体图。在本实施例中，电子设备1000为笔记本电脑。具体的，电子设备1000包括显示器200和键盘主机100。
显示器200用于显示图像、视频等。显示器200可以但不限于为有机发光二极管(organic light-emitting diode，OLED)显示器，有源矩阵有机发光二极体或主动矩阵有机发光二极体(active-matrix organic light-emitting diode，AMOLED)显示器，迷你发光二极管(mini organic light-emitting diode)显示器，微型发光二极管(micro organic light-emitting diode)显示器，微型有机发光二极管(micro organic light-emitting diode)显示器，量子点发光二极管(quantum dot light emitting diodes，QLED)显示器等。
键盘主机100与显示器200可转动连接。键盘主机100用于输入指令和数据，并根据输入的指令和数据，控制显示器200显示图像、视频。同时，键盘主机100还用于播放语音或者音乐。
电子设备1000能够在打开状态与闭合状态之间切换。当电子设备1000处于打开状态时(如图1所示)，显示器200与键盘主机100呈大于0°，且小于180°的夹角。当电子设备1000处于闭合状态时，显示器200盖合于键盘主机100上，且显示器200的显示面与键盘主机100的键盘面相对。
为了方便下文各实施例的描述，针对键盘主机100，建立XYZ坐标系。具体的，定义键盘主机100与显示器200的转动轴线的延伸方向为X轴方向，键盘主机100的厚度方向为Z轴方向，与X轴方向和Z轴方向均垂直的方向为Y轴方向。可以理解的是，键盘主机100的坐标系设置可以根据实际需要进行灵活设置，在此不做具体限定。
请参阅图2，图2为根据图1所示的电子设备1000中键盘主机100的截面结构示意图。在本实施例中，键盘主机100包括外壳20、主板40、和键盘10。
需要说明的是，图2仅示意性的示出了键盘主机100包括的一些部件，这些部件的实际形状、实际大小、实际位置和实际构造不受图2以及下文各附图限定。
外壳20用于保护键盘主机100的内部结构。外壳20的材料包括但不限于塑胶和 金属。外壳20可以为一个结构整体，也可以由多个部分装配形成。在一些实施例中，请参阅图2，外壳20包括C壳201和D壳202。C壳201与D壳202对合，以围成外壳20的内部容纳空间。具体的，C壳201与D壳202在Z向上对合，以围成外壳20的内部容纳空间。C壳201与D壳202可以通过卡接固定，也可以通过胶粘固定，还可以通过螺纹连接固定，在此不做具体限定。
主板40固定于外壳20内。主板40通过间接或直接的方式固定于外壳20内。示例性的，主板40可以通过螺纹连接、卡接、焊接等方式固定于外壳20内。
主板40用于集成控制芯片。控制芯片例如可以为应用处理器(application processor，AP)、双倍数据率同步动态随机存取存储器(double data rate，DDR)以及通用存储器(universal flash storage，UFS)等。
主板40可以为硬质电路板，也可以为柔性电路板，还可以为软硬结合电路板。主板40可以采用FR-4介质板，也可以采用罗杰斯(Rogers)介质板，还可以采用FR-4和Rogers的混合介质板，等等。这里，FR-4是一种耐燃材料等级的代号，Rogers介质板为一种高频板。
键盘10用于输入指令和数据。键盘10与主板40电连接，主板40用于接收键盘10输入的指令和数据。请参阅图3和图4，图3为根据图1和图2中所示的键盘主机100中的键盘10的结构示意图；图4为根据图3所示的键盘10的爆炸图。键盘10包括：底板1、键帽2、升降部件3、透光的薄膜线路板4、透光的弹性件5、背光模组6和发光器件7。
需要说明的是，图3-图4仅示意性的示出了键盘10包括的一些部件，这些部件的实际形状、实际大小、实际位置和实际构造不受图3-图4的限制。
底板1作为键盘10的结构“骨架”，主要用来支撑并固定背光模组6、发光器件7、键帽2、升降部件3和薄膜线路板4。底板1位于外壳20的内部容纳空间内。具体的，底板1可以固定于C壳201上。示例性的，底板1通过胶粘、卡接、螺纹连接、铆接等方式固定于C壳201。当然，在其它的示例中，底板1也可以固定于D壳202上。
底板1呈大体矩形平板状。底板1的材质包括但不限于金属、塑料以及二者的结合。底板1具有在底板1的厚度方向(即Z轴方向)上贯穿底板1的透光孔11。
键帽2与底板1相连。具体的，键帽2具有被按压位置和释放位置。键帽2相对底板1在底板1的厚度方向(即Z轴方向上)可移动以在被按压位置和释放位置之间切换。键帽2在释放位置与底板1之间的距离大于键帽2在被按压位置与底板1之间的距离。键帽2可以为多个。在下面的描述中，以键帽2为一个为例进行说明。
C壳201上对应每个键帽2的位置设有避让口201a(结合图2)。键帽2穿过避让口201a伸出至C壳201外。键帽2具有透光部(图未示出)。且键帽2与透光孔11相对。这样一来，从透光孔11处透过的光线可以传播到透光部，并且穿过透光部，以便于用户在光线较暗的环境中根据透光部透过的光线所显示的图形选择所需要按压的键帽2，以提高用户利用键盘10输入信息的准确性。
示例性的，透光部的形状包括但不限于英文字母的样式、标点符号的样式、汉语部首的样式、动物图形的样式或者其它起到提醒或装饰作用的图形样式。键帽2的材 质包括但不限于塑料。
请参阅图5和图6，图5为根据图3所示的键盘10在A-A方向的局部剖视示意图；图6为根据图3所示的键盘10在B-B方向的局部剖视示意图。升降部件3连接在键帽2和底板1之间。键帽2经由升降部件3相对于底板1在被按压位置与释放位置之间移动。具体的，升降部件3被构造成为剪刀脚式结构。具体而言，升降部件3包括第一升降件31和第二升降件32。第一升降件31和第二升降件32交叉设置，并且第一升降件31和第二升降件32在交叉位置处枢转相连。第一升降件31可活动地连接在键帽2与底板1之间，第二升降件32可活动地连接在键帽2与底板1之间。由此，键帽2可以通过第一升降件31与第二升降件32的剪刀脚连接设计相对于底板1在被按压位置和释放位置之间移动。
示例性的，每个键帽2与底板1之间布置有多个升降部件3。例如，如图5所示，每个键帽2与底板1之间布置有两个升降部件3。当然，本申请不限于此，在其它的示例中，每个键帽2与底板1之间布置有一个升降部件3。对于每个键盘10与底板1之间的升降部件3的具体数量，本申请不作限制。
请继续参阅图5和图6，背光模组6位于底板1的背离键帽2的一侧。并且，背光模组6与底板1层叠设置。背光模组6用于将发光器件7产生的光导向透光孔11。这样，光线可以通过透光孔11被折射到键帽2上，进而使得键盘10可以发光。可以理解的是，当电子设备1000中包括背光模组6时，电子设备1000也可以不包括上述的底板1，而是利用背光模组6来支撑薄膜线路板4、键帽2和弹性件5等。在其它的示例中，电子设备1000也可以不包括背光模组6。
具体的，请继续参阅图5和图6，背光模组6包括导光片61和反射片62。导光片61和反射片62层叠设置。反射片62设在导光片61的背离键帽2的一侧。发光器件7可以向导光片61提供光线。光线射入导光片61时，可以扩散至整个导光片61。并且一部分光线可以在导光片61的作用下向上直接射入透光孔11。一部分光线则向下散射到反射片62上，该部分散热到反射片62上的光线在反射片62的作用下向上反射，以使得该部分光线的至少部分射入透光孔11。从而在反射片62的作用下，提高发光器件7所提供的光线的利用率，有利于更多的光线经过透光孔11折射到键帽2上。
导光片61的材质包括但不限于聚碳酸酯和/或亚克力塑胶。
为了提高导光效果，导光片61的对应于透光孔11的位置处设有导光凸点，导光凸点凸出于导光片61的表面。示例性的，导光凸点与导光片61为一体成型件，这样有利于提高导光效果，并且还可以提高导光片61与导光凸点的连接强度，简化二者的加工工艺，降低生产成本。当然，本申请不限于此，在其它的示例中，导光凸点与导光片61还可以通过透光的粘胶层胶粘相连。
为了进一步的提高导光凸点的导光效果，导光凸点可以伸入到透光孔11内。当然，可以理解的是，在其它的示例中，导光凸点也可以不伸入到透光孔11内。或者，为了简化导光片61的结构，导光片61上也可以不设置该导光凸点。
反射片62可以为形成于导光片61的背离键帽2的一侧表面的反射层。该反射层的材质包括但不限于金属(例如银、铜等)。或者，在另一些示例中，反射片62包 括反射基材板和设置在该基材板上的反射层。该反射层的材质包括但不限于金属(例如银、铜等)。
为了简化键盘10的结构，合理优化键盘10的结构布局，请参阅图7，图7为根据图6所示的键盘10中的C处圈示部分的放大图。其中，反射片62上设有在反射片62的厚度方向上贯穿反射片62的安装孔621。发光器件7的至少部分位于安装孔621内。这样，可以节省发光器件7和背光模组6整体所占用的空间，实现键盘10结构的紧凑性，并且还有利于发光器件7所产生的光线被导向键帽2。需要说明的是，发光器件7与背光模组6的布局形式不限于上文中所示的方式，在其它的示例中，发光器件7还可以位于背光模组6的外周边缘所朝向的一侧。只要保证发光器件7位于底板1的背离键帽2的一侧即可。
进一步的，为了进一步简化键盘10的结构，合理优化键盘10的结构布局，同时提高导光片61的导光效果，导光片61上具有与安装孔621正对的导光孔611，发光器件7的出光端位于导光孔611内。
示例性的，为了进一步地提高发光器件7发出的光线的利用率，导光孔611与透光孔11可以正对。当然，本申请不限于此，结合图5和图6，导光孔611与透光孔11还可以是错开的。
在此基础上，为了进一步地提高背光模组6的导光效果，请继续参阅图5和图6，背光模组6还包括遮光片63。遮光片63设置在导光片61与底板1之间，遮光片63具有与透光孔11正对的漏光部631。这样，发光器件7向导光片61提供的光线，则会在遮光片63与反射片62之间不断地反射，从而有利于更多的光线经过漏光部631之后而射入透光孔11，进而提高发光器件7所提供的光线的利用率，有利于更多的光线经过透光孔11折射到键帽2上。
示例性的，遮光片63可以为形成于导光片61的朝向键帽2的一侧表面的遮光层。该遮光层的材质包括但不限于黑色油墨。遮光层对应于透光孔11的位置镂空以形成漏光部631。或者，在另一些示例中，遮光片63包括透光的基材板和设置在该基材板上的遮光层，该遮光层的材质包括但不限于黑色油墨。遮光层对应于透光孔11的位置镂空，这样，该基材板的与透光孔11正对的部分以及遮光层的镂空部分共同限定出漏光部631。
需要说明的是，背光模组6中也可以不设置遮光片63，而是利用具有遮光功能的底板1来起到遮光片63的作用。这样，可以减小背光模组6的厚度，进而有利于降低键盘10的整体厚度，降低键盘10的制造成本。
在一些示例中，发光器件7与背光模组6可以集成为一体。例如，该背光模组6可以为包含led灯的背光模组或者包含冷光片的RGB模组。
当然，可以理解的是，发光器件7与背光模组6还可以是相互独立的。请继续参阅图5和图6，发光器件7可以通过走线结构9与主板40电连接，并且发光器件7固定于该走线结构9上。示例性的，发光器件7可以通过焊接、卡接或胶粘等方式固定于走线结构9上。示例性的，该走线结构可以为柔性电路板。发光器件7包括但不限于LED灯。
请继续参阅图5和图6，薄膜线路板4设置于底板1的背离背光模组6的一侧， 并且与底板1和背光模组6层叠设置。也就是说，底板1位于薄膜线路板4与背光模组6之间，并且底板1、薄膜线路板4与背光模组6层叠设置。这样，可以利用底板1来支撑并固定薄膜线路板4。薄膜线路板4与底板1之间的连接方式包括但不限于胶粘、卡接、螺钉连接或焊接。
薄膜线路板4上设有贯穿薄膜线路板4的让位孔4a(结合图4)。键帽2位于薄膜线路板4的远离背光模组6的一侧。该让位孔4a用于供升降部件3穿过，以便于实现键帽2与底板1之间的连接。薄膜线路板4通过电连接结构8(结合图4)与主板40电连接。
请参阅图8和图9，图8为根据图3-图7中所示的薄膜线路板4的剖视示意图；图9为根据图8所示的薄膜线路板4的爆炸图。薄膜线路板4包括：透光的开关42和透光的基板41。开关42设于基板41。开关42与透光孔11正对。
在一些示例中，基板41包括第一绝缘薄膜层411、绝缘隔离层413和第二绝缘薄膜层412。第一绝缘薄膜层411、绝缘隔离层413和第二绝缘薄膜层412在键帽2的移动方向(即Z轴方向)上依次层叠设置。绝缘隔离层413位于第一绝缘薄膜层411和第二绝缘薄膜层412，以将第一绝缘薄膜层411和第二绝缘薄膜层412隔离开。第二绝缘薄膜层412位于第一绝缘薄膜层411的远离底板1的一侧。
第一绝缘薄膜层411、绝缘隔离层413和第二绝缘薄膜层412的材质可以相同，也可以不同。具体的，第一绝缘薄膜层411、绝缘隔离层413和第二绝缘薄膜层412的材质可以为塑料材质。例如，第一绝缘薄膜层411、绝缘隔离层413和第二绝缘薄膜层412可以为聚对苯二甲酸乙二醇酯(Polyethylene terephthalate，PET)薄膜或聚碳酸酯(Polycarbonate，PC)薄膜。只要保证用于制作第一绝缘薄膜层411、绝缘隔离层413和第二绝缘薄膜层412的材质具有透光性即可。
请继续参阅图8和图9，薄膜线路板4还包括第一电路走线414和第二电路走线415。第一电路走线414和第二电路走线415中的其中一个为正极走线，且另一个为负极走线。第一电路走线414形成于第一绝缘薄膜层411的朝向第二绝缘薄膜层412的表面上。第二电路走线415形成于第二绝缘薄膜层412的朝向第一绝缘薄膜层411的表面上。由此，通过将第一电路走线414和第二电路走线415分别形成于不同的薄膜层，有利于利用绝缘隔离层413将第一电路走线414和第二电路走线415间隔开设置，提高薄膜线路板4工作的可靠性。
具体的，第一电路走线414包括第一电路4141和第一导电触点4142。其中，第一导电触点4142和第一电路4141电连接。第二电路走线415包括第二电路4151和第二导电触点4152。第二导电触点4152与第二电路4151电连接。第一导电触点4142和第二导电触点4152在键帽2的移动方向(即Z轴方向)上相对设置。这样一来，相对应的第一导电触点4142和第二导电触点4152可以形成开关42。
示例性的，第一导电触点4142的形状包括但不限于圆形、扇形、半圆形、矩形、椭圆形或异形。第二导电触点4152的形状包括但不限于圆形、扇形、半圆形、矩形、椭圆形或异形。为了提高第一导电触点4142和第二导电触点4152的接触可靠性，第一导电触点4142和第二导电触点4152的形状相同。
为了实现第一导电触点4142与第二导电触点4152的接触导通，绝缘隔离层413 上对应于开关42处设置有避让通道4131。这样，当用户朝向底板1的方向按压键帽2时，第一绝缘薄膜层411和第二绝缘薄膜层412受力相对靠近，在键帽2移动至被按压位置时，第一导电触点4142和第二导电触点4152在避让通道4131内接触而形成电性导通。当用户不再按压键帽2时，第一导电触点4142和第二导电触点4152绝缘间隔开。
请参阅图10和图11，图10为根据图6所示的省略了升降部件3的键盘10的局部剖视示意图，其中，键帽2处于释放状态；图11为根据图6所示的省略了升降部件3的键盘10的局部剖视示意图，其中，键帽2处于被按压状态。弹性件5抵接于键帽2与薄膜线路板4之间。
请继续参阅图10、图11并且结合图12，其中，图12为根据图10-图11中所示的键盘10中的弹性件5的立体图。弹性件5包括：触发部51和抵接圈52。抵接圈52围设在触发部51的边缘一周设置。
抵接圈52抵接在键帽2与薄膜线路板4之间。触发部51与开关42正对。在键帽2的释放位置，触发部51与薄膜线路板4间隔开，在键帽2的被按压位置，触发部51与薄膜线路板4接触以触发开关42。
具体而言，请参阅图11，当用户由键帽2所朝向的一侧按压键帽2时，弹性件5会产生弹性变形，以利于键帽2进一步向底板1的方向移动。当键帽2移动至被按压位置时，弹性件5可以产生预设程度的变形以使得触发部51挤压薄膜线路板4，而使得上述的第一绝缘薄膜层411对应于触发部51的位置和第二绝缘薄膜层412对应于触发部51的位置受力相对靠近，从而实现第一导电触点4142和第二导电触点4152在避让通道4131内接触而形成电性导通，以达到触发开关42的目的。请参阅图10，用户撤去对键帽2的按压动作后，弹性件5在自身的回弹力的作用下而恢复至初始形态，并且在此过程中，弹性件5带动键帽2向远离底板1的方向移动至释放位置，触发部51与薄膜线路板4间隔开，这样，第一绝缘薄膜层411对应于触发部51的位置和第二绝缘薄膜层412对应于触发部51的位置间隔开，而使得第一导电触点4142和第二导电触点4152绝缘间隔开。
具体的，触发部51包括本体部511和抵触凸部512。本体部511呈片状。本体部511与薄膜线路板4大体平行设置(在实际产品中也允许存在一定的误差，例如，本体部511与薄膜线路板4的夹角在±10°以内)。抵接圈52围设在本体部511的边缘一周设置。抵触凸部512凸出于本体部511的朝向开关42的一侧表面。抵触凸部512与开关42正对。这样，在键帽2的被按压位置，抵触凸部512可以与薄膜线路板4接触以触发开关42。通过在本体部511上设置抵触凸部512，有利于在弹性件5产生相对较小的变形的条件下，即可触发开关42，有利于提高弹性件5的使用寿命。当然，可以理解的是，在其它的示例中，触发部51上也可以不设置抵触凸部512，而是利用本体部511来触发开关42。
具体而言，请继续参阅图11，图11中箭头所示意的方向为光线的传播方向。发光器件7发出的光线在导光片61、反射片62以及遮光片63的作用下被导向透光孔11，射入透光孔11的光线射向薄膜线路板4。由于薄膜线路板4的基板41透光，同时薄膜线路板4中的开关42(即第一导电触点4142和第二导电触点4152)均透光， 则来自透光孔11的光线可以较多的穿过薄膜线路板4向上传播，并且穿过透光的弹性件5而抵达键盘10的透光部。
相关技术中，为了节省材质成本，通常选择不透光的材质加工第一电路走线414、第二电路走线415，这就常常导致由透光孔11透光的光线中的一部分被与透光孔11正对的部分电路走线遮挡而无法到达透光部，因此实际所能传播到键帽2的透光部处的光线较少，引起键帽2处的光线较弱，且光线不均匀。而在本申请实施例的键盘10中，基板41透光，并且与键帽2对应的开关42(也即第一导电触点4142和第二导电触点4152)也透光，这样一来，在不增加发光器件7的数量的前提下，可以有利于更多的光线传播到键帽2，增强键帽2处的光线，提高键帽2处光线的均匀性，从而提高键盘10的背光效果。
在一些示例中，第一电路走线414整体透光。这样，不但便于更多的光线能够传播到键帽2处，还有利于利用一种材质加工出第一电路走线414，无需利用两种不同的材质分别加工第一电路4141和第一导电触点4142，从而简化第一电路走线414的加工工艺。
示例性的，第一电路走线414的材质为银纳米线。银纳米线为一种纳米尺寸的银线。具有良好的导电性和透光性。当然，本申请不限于此，在其它的示例中，第一电路走线414的材质还可以为石墨烯。石墨烯具有较好的导电性和透光性。
在一些示例中，第二电路走线415整体透光。这样，不但便于更多的光线能够传播到键帽2处，还有利于利用一种材质加工出第二电路走线415，无需利用两种不同的材质分别加工第二电路4151和第二导电触点4152，从而简化第二电路走线415的加工工艺。
示例性的，第二电路走线415的材质为银纳米线。银纳米线为一种纳米尺寸的银线。具有良好的导电性和透光性。当然，本申请不限于此，在其它的示例中，第二电路走线415的材质还可以为石墨烯。石墨烯具有较好的导电性和透光性。
为了进一步地简化加工工艺，第一电路走线414和第二电路走线415的材质相同。
请参阅图13和图14，图13为本申请另一些实施例的薄膜线路板4的爆炸图；图14为采用图13所示的薄膜线路板4的键盘10的局部剖视示意图，其中，键帽2处于释放状态。图13和图14所示的实施例与图1-图12所示的实施例的不同之处在于:第一电路走线414和第二电路走线415间隔形成于第一绝缘薄膜层411的朝向键帽2的表面上。并且利用绝缘隔离层413覆盖第一绝缘薄膜层411的朝向键帽2的表面且覆盖第一电路走线414和第二电路走线415，第二绝缘薄膜层412覆盖绝缘隔离层413的朝向键帽2的表面且覆盖第一电路走线414和第二电路走线415，以起到对第一电路走线414和第二电路走线415进行防护的作用，提高薄膜线路板4工作的可靠性。
请继续参阅图13和图14，第二绝缘薄膜层412上对应于避让通道4131处设有避让孔4121，避让通道4131和避让孔4121共同限定出避让空间。触发部51上设有透光的导电部53。当键帽2处于释放位置时，导电部53与薄膜线路板4间隔开，第一导电触点4142和第二导电触点4152间隔开未电性导通。请参阅图15和图16，图 15为采用图13所示的薄膜线路板4的键盘10的局部剖视示意图，其中，键帽2处于被按压状态；图16为根据图13-图14中所示的薄膜线路板4中的第一电路走线414、第二电路走线415以及导电部53在被按压状态下的配合示意图。当键帽2处于被按压位置时，由于避让空间的避让作用，导电部53伸入到避让空间内与对应的第一导电触点4142和第二导电触点4152均接触，从而可以利用导电部53的导电作用实现第一导电触点4142和第二导电触点4152的电性导通，以达到触发开关42的目的。
具体而言，请继续参阅图15，图15中箭头所示意的方向为光线的传播方向。发光器件7发出的光线在导光片61、反射片62以及遮光片63的作用下被导向透光孔11，射入透光孔11的光线射向薄膜线路板4。并且该部分光线依次经过第一绝缘薄膜层411、第一电路走线414和第二电路走线415、避让通道4131、避让孔4121和弹性件5之后而抵达键帽2的透光部。
这样一来，在本申请的实施例中，通过将第一电路走线414和第二电路走线15间隔开的设置在第一绝缘薄膜层411的朝向键帽2的表面上，发光器件7产生的光线会同时穿过第一电路走线414和第二电路走线415，与上文中图11所示的发光器件7产生的光线先后穿过第一电路走线414和第二电路走线415相比，光线在抵达透光部的路径中，可以少穿过一层第二电路走线415，从而可以利于更多的光线可以抵达弹性件，进而利于更多的光线抵达透光部，提高光线的利用率。另外，通过设置透光的导电部53，不但可以利用导电部53在键帽2的被按压状态下实现第一导电触点4142和第二导电触点4152的电性导通，而且还不会影响光线的传播。
在一些示例中，请参阅图16，第一导电触点4142和第二导电触点4152的形状均呈小半圆形，且第一导电触点4142和第二导电触点4152在第一绝缘薄膜层411所在的平面内相对设置。
在又一些示例中，为了在被按压位置提高第一导电触点4142和第二导电触点4152的导电的可靠性，请参阅图17，图17为本申请再一些实施例的薄膜线路板4中的第一电路走线414、第二电路走线415以及导电部53在被按压状态下的配合示意图；第二导电触点4152包括两个在第一绝缘薄膜层411所在的平面内间隔开的触点41521，第一导电触点4142介于两个触点41521之间。这样可以便于提高导电部53与第一导电触点4142和第二导电触点4152的电性导通的可靠性。示例性的，请参阅图17，触点41521呈扇形。当然，触点41521还可以呈其它的形状，例如矩形、菱形、长圆形或椭圆形。第一导电触点4142的形状为扇形与矩形的结合。
在一些示例中，请参阅图18，图18为根据本申请一些实施例提供的用于图14-图15中所示的键盘10的弹性件5的立体图。导电部53可以由上述的抵触凸部512限定出。这样一来，不但结构简单，而且成本低。此外，对于弹性件5来说，由于抵接圈52抵接于键帽2与薄膜线路板4之间，且围设在触发部51的边缘一周。也即抵接圈52围设在抵触凸部512和开关42的外周，从而可以利用由抵接圈52和本体部511所形成的整体结构对导电部53和开关42进行防护，提高防水防尘的效果。
具体的，请继续参阅图18，导电部53包括透光的基材531和透光的导电材料532，其中，导电材料532均匀分布于基材531中。
为了提高导电部53的导电性和透光性，导电材料532为银纳米线和/或石墨烯。当然，可以理解的是，导电材料532还可以为其它的材料，只要保证导电材料532具有透光性和导电性即可。
为了提高基材531的透光性以及降低基材531的成本，基材531的材质可以为橡胶或硅胶。
为了提高本体部511的透光性以及降低本体部511的成本，本体部511的材质可以为橡胶或硅胶。
为了提高抵接圈52的透光性以及降低抵接圈52的成本，抵接圈52的材质可以为橡胶或硅胶。
为了简化弹性件5的加工以及提高弹性件5各个结构之间的连接可靠性，上述的本体部511以及抵接圈52的材质可以与基材531的材质相同。
为了提高弹性件5的结构强度，简化弹性件5的加工工艺，弹性件5可以为一体成型件。
在另一些示例中，请参阅图19，图19为根据本申请另一些实施例提供的用于图14-图15中所示的键盘10的弹性件5的立体图。导电部53由触发部51限定出。也就是说，导电部53可以由上述的抵触凸部512和本体部511共同限定出。
在此基础上，在一些实施例中，为了简化弹性件5的加工以及提高弹性件5各个结构之间的连接可靠性，导电部53中基材531的材质与抵接圈52的材质可以相同。
在再一些示例中，请参阅图20，图20为根据本申请再一些实施例提供的用于图14-图15中所示的键盘10的弹性件5的立体图。弹性件5整体可以是导电的。并且，弹性件5的材质与导电部53的材质相同。这样，可以有利于利用一体成型工艺同时加工出弹性件5与导电部53，或者利用弹性件5直接形成导电部53，有利于简化弹性件5与导电部53整体的加工制造，降低成本。
在其它再一些示例中，请参阅图21，图21为根据本申请其它一些实施例提供的用于图14-图15中所示的键盘10的弹性件5的立体图。导电部53可以为独立于弹性件5的结构。具体的，导电部53可以为附着于触发部51的朝向开关42的至少部分表面的导电层。例如，可以通过印刷工艺在弹性件5上加工出导电层。为了提高导电层的透光性，导电层的材质包括但不限于银纳米线和/或石墨烯。
示例性的，请继续参阅图21，导电层附着于抵触凸部512的朝向开关42的表面上。这样一来，不但结构简单，而且成本低。此外，对于弹性件5来说，由于抵接圈52抵接于键帽2与薄膜线路板4之间，且围设在触发部51的边缘一周。也即抵接圈52围设在抵触凸部512和开关42的外周，从而可以利用由抵接圈52和本体部511所形成的整体结构对导电部53和开关42进行防护，提高防水防尘的效果。
又示例性的，请参阅图22，图22为根据本申请其它另一些实施例提供的用于图14-图15中所示的键盘10的弹性件5的立体图。导电层附着于抵触凸部512的朝向开关42的表面和本体部511的朝向开关42的表面上。
请参阅图23，图23为根据其它一些实施例的键盘10的局部剖视示意图。图23所示的实施例与图13-图22所示的实施例的不同之处在于：薄膜线路板4不包括绝缘隔离层413。而是利用第二薄膜绝缘层来覆盖第一绝缘薄膜层411的朝向键帽2的表 面且覆盖第一电路走线414和第二电路走线415。并且第二绝缘薄膜层412上对应于开关42处设有避让孔4121。当键帽2处于被按压位置时，电部53伸入到避让孔4121内与对应的第一导电触点4142和第二导电触点4152均接触，以达到触发开关42的目的。
当然，可以理解的是，在其它的示例中，基板41中也可以不设置第二薄膜绝缘层，而是利用仅仅利用绝缘隔离层413来覆盖第一绝缘薄膜层411的朝向弹性件5的表面且覆盖第一电路走线414和第二电路走线415；又或者，基板41中仅仅包括第一绝缘薄膜层411，不包括绝缘隔离层413和第二薄膜绝缘层。
在本说明书的描述中，具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
最后应说明的是：以上实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。

Claims (35)

  1. 一种可发光的键盘，其特征在于，包括：薄膜线路板、键帽、透光的弹性件和发光器件；
    所述键帽和所述发光器件分别位于所述薄膜线路板的厚度方向的两侧；
    所述键帽具有透光部,所述键帽相对于所述薄膜线路板在所述薄膜线路板的厚度方向上可移动，以在被按压位置和释放位置之间切换；所述弹性件抵接于所述键帽与所述薄膜线路板之间，所述弹性件包括触发部；
    所述薄膜线路板包括透光的基板和透光的开关，所述开关设于所述基板，且与所述触发部相对；所述发光器件产生的光线中的至少部分穿过所述开关和所述弹性件射入所述透光部；其中，在所述键帽的被按压位置，所述触发部与所述薄膜线路板接触以触发所述开关；在所述键帽的释放位置，所述触发部与所述薄膜线路板间隔开。
  2. 根据权利要求1所述的可发光的键盘，其特征在于，所述薄膜线路板包括：
    第一电路走线，所述第一电路走线设于所述基板，且包括第一导电触点；
    第二电路走线，所述第二电路走线设于所述基板，所述第二电路走线与所述第一电路走线间隔开设置，所述第二电路走线包括第二导电触点，所述第一导电触点和所述第二导电触点形成所述开关，在所述键帽的被按压位置，所述第一导电触点和所述第二导电触点形成电性导通。
  3. 根据权利要求2所述的可发光的键盘，其特征在于，所述薄膜线路板包括第一绝缘薄膜层，所述第一电路走线和所述第二电路走线均形成于所述第一绝缘薄膜层的朝向所述键帽的表面上；
    所述触发部上设有透光的导电部，在所述键帽的被按压位置，所述导电部与所述第一导电触点和所述第二导电触点均接触而形成电性导通。
  4. 根据权利要求3所述的可发光的键盘，其特征在于，所述导电部为附着于所述触发部的朝向所述开关的至少部分表面的导电层。
  5. 根据权利要求4所述的可发光的键盘，其特征在于，所述导电层的材质为银纳米线和/或石墨烯。
  6. 根据权利要求3所述的可发光的键盘，其特征在于，所述导电部由所述触发部的至少部分限定出。
  7. 根据权利要求4或6所述的可发光的键盘，其特征在于，所述触发部包括本体部和抵触凸部，所述本体部抵接于所述键帽，所述抵触凸部凸出于所述本体部的朝向所述开关的一侧表面，所述导电部形成于所述抵触凸部上。
  8. 根据权利要求7所述的可发光的键盘，其特征在于，所述弹性件包括抵接圈，所述抵接圈围设于所述本体部的边缘一周，且所述抵接圈抵接于所述键帽与所述薄膜线路板之间。
  9. 根据权利要求3所述的可发光的键盘，其特征在于，所述弹性件整体导电，且所述弹性件与所述导电部的材质相同。
  10. 根据权利要求3所述的可发光的键盘，其特征在于，所述导电部包括：透光的基材和透光的导电材料，所述导电材料均匀分布于所述基材中。
  11. 根据权利要求10所述的可发光的键盘，其特征在于，所述导电材料为银纳米 线和/或石墨烯。
  12. 根据权利要求3所述的可发光的键盘，其特征在于，所述薄膜线路板包括第二绝缘薄膜层，所述第二绝缘薄膜层设于所述第一绝缘薄膜层的朝向所述键帽的表面上，且覆盖所述第一电路走线和所述第二电路走线，所述第二绝缘薄膜层上具有与所述开关相对的避让孔。
  13. 根据权利要求2所述的可发光的键盘，其特征在于，所述基板包括：第一绝缘薄膜层、绝缘隔离层和第二绝缘薄膜层，所述第一绝缘薄膜层、绝缘隔离层和第二绝缘薄膜层在所述键帽的移动方向上依次层叠设置，所述第一电路走线形成于所述第一绝缘薄膜层的朝向所述第二绝缘薄膜层的表面，所述第二电路走线形成于所述第二绝缘薄膜层的朝向所述第一绝缘薄膜层的表面，所述第一导电触点和所述第二导电触点在所述键帽的移动方向上相对，所述绝缘隔离层上对应于所述开关的位置形成有避让通道；
    在所述键帽的被按压位置，所述第一导电触点和所述第二导电触点在所述避让通道内接触而形成电性导通。
  14. 根据权利要求2所述的可发光的键盘，其特征在于，所述第一电路走线和所述第二电路走线均透光。
  15. 根据权利要求14所述的可发光的键盘，其特征在于，所述第一电路走线的材质为银纳米线和/或石墨烯；和/或，
    所述第二电路走线的材质为银纳米线和/或石墨烯。
  16. 根据权利要求1所述的可发光的键盘，其特征在于，包括：背光模组，所述背光模组层叠设于所述薄膜线路板的背离所述键帽的一侧，所述背光模组用于将所述发光器件产生的光线导向所述开关。
  17. 根据权利要求16所述的可发光的键盘，其特征在于，所述背光模组包括：
    导光片，所述导光片用于将所述发光器件产生的光线导向所述开关；
    反射片，所述反射片设在所述导光片的背离所述薄膜线路板的一侧。
  18. 根据权利要求17所述的可发光的键盘，其特征在于，所述反射片上设有安装孔，所述发光器件的至少部分位于所述安装孔内。
  19. 根据权利要求18所述的可发光的键盘，其特征在于，所述导光片上具有与所述安装孔处正对的导光孔，所述发光器件的出光端位于所述导光孔内。
  20. 根据权利要求17所述的可发光的键盘，其特征在于，所述背光模组还包括遮光片，所述遮光片设于所述导光片与所述薄膜线路板之间，所述遮光片具有与所述开关正对的漏光部。
  21. 根据权利要求16所述的可发光的键盘，其特征在于，还包括底板，所述底板固定于所述薄膜线路板与所述背光模组之间，所述底板具有与所述开关正对的透光孔，所述键帽与所述底板可移动地相连。
  22. 一种电子设备，其特征在于，包括：
    主板；
    根据权利要求1-21中任一项所述的可发光的键盘，所述薄膜线路板、所述发光器件均与所述主板电连接。
  23. 一种可发光的键盘，其特征在于，包括：薄膜线路板、键帽、透光的弹性件、背光模组、底板和发光器件；
    所述键帽和所述发光器件分别位于所述薄膜线路板的厚度方向的两侧；
    所述键帽具有透光部,所述键帽相对于所述薄膜线路板在所述薄膜线路板的厚度方向上可移动，以在被按压位置和释放位置之间切换；所述弹性件抵接于所述键帽与所述薄膜线路板之间，所述弹性件包括触发部；
    所述薄膜线路板包括透光的基板和透光的开关，所述开关设于所述基板，且与所述触发部相对；所述发光器件产生的光线中的至少部分穿过所述开关和所述弹性件射入所述透光部；其中，在所述键帽的被按压位置，所述触发部与所述薄膜线路板接触以触发所述开关；在所述键帽的释放位置，所述触发部与所述薄膜线路板间隔开；
    所述薄膜线路板包括：第一电路走线和第二电路走线，所述第一电路走线设于所述基板，且包括第一导电触点；所述第二电路走线设于所述基板，所述第二电路走线与所述第一电路走线间隔开设置，所述第二电路走线包括第二导电触点，所述第一导电触点和所述第二导电触点形成所述开关，在所述键帽的被按压位置，所述第一导电触点和所述第二导电触点形成电性导通，所述第一电路走线和所述第二电路走线均透光，所述第一电路走线的材质为银纳米线和/或石墨烯，所述第二电路走线的材质为银纳米线和/或石墨烯；
    所述基板包括第一绝缘薄膜层，所述第一电路走线和所述第二电路走线均形成于所述第一绝缘薄膜层的朝向所述键帽的表面上；所述触发部上设有透光的导电部，在所述键帽的被按压位置，所述导电部与所述第一导电触点和所述第二导电触点均接触而形成电性导通；
    所述背光模组层叠设于所述薄膜线路板的背离所述键帽的一侧，所述背光模组用于将所述发光器件产生的光线导向所述开关，所述背光模组包括：导光片和反射片，所述导光片用于将所述发光器件产生的光线导向所述开关，所述反射片设在所述导光片的背离所述薄膜线路板的一侧；
    所述底板固定于所述薄膜线路板与所述背光模组之间，所述底板具有与所述开关正对的透光孔，所述键帽与所述底板可移动地相连，所述导光片的对应于所述透光孔的位置处设有导光凸点，所述导光凸点凸出于所述导光片的表面，且伸入到所述透光孔内。
  24. 根据权利要求23所述的可发光的键盘，其特征在于，所述导电部为附着于所述触发部的朝向所述开关的至少部分表面的导电层。
  25. 根据权利要求24所述的可发光的键盘，其特征在于，所述导电层的材质为银纳米线和/或石墨烯。
  26. 根据权利要求23所述的可发光的键盘，其特征在于，所述导电部由所述触发部的至少部分限定出。
  27. 根据权利要求24或26所述的可发光的键盘，其特征在于，所述触发部包括本体部和抵触凸部，所述本体部抵接于所述键帽，所述抵触凸部凸出于所述本体部的朝向所述开关的一侧表面，所述导电部形成于所述抵触凸部上。
  28. 根据权利要求27所述的可发光的键盘，其特征在于，所述弹性件包括抵接 圈，所述抵接圈围设于所述本体部的边缘一周，且所述抵接圈抵接于所述键帽与所述薄膜线路板之间。
  29. 根据权利要求23所述的可发光的键盘，其特征在于，所述弹性件整体导电，且所述弹性件与所述导电部的材质相同。
  30. 根据权利要求23所述的可发光的键盘，其特征在于，所述导电部包括：透光的基材和透光的导电材料，所述导电材料均匀分布于所述基材中。
  31. 根据权利要求30所述的可发光的键盘，其特征在于，所述导电材料为银纳米线和/或石墨烯。
  32. 根据权利要求23所述的可发光的键盘，其特征在于，所述薄膜线路板包括第二绝缘薄膜层，所述第二绝缘薄膜层设于所述第一绝缘薄膜层的朝向所述键帽的表面上，且覆盖所述第一电路走线和所述第二电路走线，所述第二绝缘薄膜层上具有与所述开关相对的避让孔。
  33. 根据权利要求23所述的可发光的键盘，其特征在于，所述反射片上设有安装孔，所述发光器件的至少部分位于所述安装孔内。
  34. 根据权利要求33所述的可发光的键盘，其特征在于，所述导光片上具有与所述安装孔正对的导光孔，所述发光器件的出光端位于所述导光孔内。
  35. 根据权利要求23所述的可发光的键盘，其特征在于，所述背光模组还包括遮光片，所述遮光片设于所述导光片与所述薄膜线路板之间，所述遮光片具有与所述开关正对的漏光部。
PCT/CN2022/138120 2022-02-25 2022-12-09 一种可发光的键盘和电子设备 WO2023160125A1 (zh)

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