Backlight module and luminous keyboard

Abstract

The invention relates to a backlight module and a light-emitting keyboard. The light-emitting keyboard comprises specific function keys. The backlight module for the luminous keyboard comprises a lamp panel, a light guide plate and a shading plate. The lamp panel is provided with a first light-emitting unit and a second light-emitting unit. The light guide plate has a first light guide hole and a second light guide hole. The first light-emitting unit is located in the first light guide hole. The second light-emitting unit is located in the second light guide hole. The shading plate, the light guide plate and the lamp panel are stacked from top to bottom. The light shielding plate has a shielding portion. The shielding portion overlaps the projections of the first light-emitting unit and the second light-emitting unit. The light guide plate has a light guide plate groove. And the light guide plate groove is overlapped with the boundary projection of the shielding part and the keycap projection area of the specific function key. The invention designs a backlight module for a specific function key on a luminous keyboard. Therefore, when the specific function of the arithmetic device is started, the light color can be displayed below the specific function key, so that a user can easily know that the specific function is in a starting state.

Description

TECHNICAL FIELD

[0001] The present application relates to a backlight module and a light-emitting keyboard. BACKGROUND

[0002] With the development of technology, the design of keyboards is becoming more and more diversified. When users choose a keyboard, in addition to the basic input function, the visual effect of the keyboard is also valued by the user. At present, there are light-emitting keyboards on the market, which not only attract users visually, but also can be used at night or in places with insufficient light. If the conventional light-emitting keyboard is applied to a thin computing device, a large number of components are stacked in the narrow space of the computing device, making the heat dissipation problem more and more prominent. In addition, with the progress of technology, the computing device also has specific functions such as artificial intelligence assistance. Therefore, in order to improve the heat dissipation efficiency of the computing device and to adapt to its specific functions, the configuration of the embedded keyboard module also needs to be adjusted accordingly. SUMMARY

[0003] The main purpose of the present application is to provide a backlight module and a light-emitting keyboard to solve the above problems.

[0004] According to one aspect of the present application, a backlight module for a light-emitting keyboard is provided, the light-emitting keyboard comprising a specific function key, the backlight module comprising: a lamp plate having a first light-emitting unit and a second light-emitting unit; a light guide plate having a first light guide hole and a second light guide hole, wherein the first light-emitting unit is located in the first light guide hole, and the second light-emitting unit is located in the second light guide hole; and a light shielding plate having a shielding portion, wherein the light shielding plate, the light guide plate and the lamp plate are stacked from top to bottom, and the shielding portion is projectedly overlapped with the first light-emitting unit and the second light-emitting unit; wherein the light guide plate further has a light guide plate groove, and the light guide plate groove is projectedly overlapped with the boundary of the shielding portion and the keycap projection area of the specific function key.

[0005] Preferably, the backlight module further comprises: a reflective layer disposed between the light guide plate and the lamp plate and having a first reflective layer hole, a second reflective layer hole and a fitting portion; wherein the first light guide hole and the first reflective layer hole are vertically aligned, the second light guide hole and the second reflective layer hole are vertically aligned, the light guide plate groove and the fitting portion are vertically aligned, the first light-emitting unit is located in the first reflective layer hole, the second light-emitting unit is located in the second reflective layer hole, and the fitting portion is projectedly overlapped with the boundary of the shielding portion and the keycap projection area.

[0006] Preferably, the first light emitting unit and the second light emitting unit are adjacent to two opposite side edges of the keycap projection area, respectively.

[0007] Preferably, the light guide plate groove overlaps one of the two opposite side edges and the other two opposite side edges of the keycap projection area, the other two opposite side edges being connected to the one of the two opposite side edges.

[0008] Preferably, the light shielding plate has a light transmission portion, the shielding portion includes an outer frame portion surrounding the light transmission portion and an inner block portion within the range of the light transmission portion.

[0009] Preferably, the first light emitting unit overlaps the outer frame portion in projection, and the second light emitting unit overlaps the inner block portion in projection.

[0010] Preferably, the light guide plate groove overlaps the outer frame portion in projection, and the light guide plate groove does not overlap the inner block portion in projection.

[0011] Preferably, the first light emitting unit and the second light emitting unit are adjacent to one side edge of the keycap projection area.

[0012] Preferably, the light guide plate groove does not overlap the side edge in projection.

[0013] Preferably, the light shielding plate has a light transmission portion, the shielding portion includes an outer frame portion surrounding the light transmission portion, and the outer frame portion overlaps the first light emitting unit and the second light emitting unit in projection.

[0014] Preferably, the light guide plate groove overlaps the outer frame portion in projection.

[0015] Preferably, the light color of the first light emitting unit is different from the light color of the second light emitting unit.

[0016] A light-emitting keyboard, comprising: a backlight module, the backlight module comprising: a light plate, the light plate having a first light emitting unit; a light guide plate, the light guide plate having a first light guide hole, the first light emitting unit being located in the first light guide hole; and a light shielding plate, the light shielding plate having a shielding portion, wherein the light shielding plate, the light guide plate, and the light plate are stacked from top to bottom, the shielding portion overlapping the first light emitting unit in projection; and a specific function key, the specific function key being located above the backlight module and comprising a key circuit board, wherein the key circuit board has a second light emitting unit; wherein the light guide plate further has a light guide plate groove, the light guide plate groove overlapping the boundary of the shielding portion and the keycap projection area of the specific function key in projection.

[0017] Preferably, the backlight module further comprises: a reflective layer disposed between the light guide plate and the lamp plate and having a first reflective layer hole and a fitting portion; wherein the first light guide hole and the first reflective layer hole are vertically aligned, the light guide plate groove and the fitting portion are vertically aligned, the first light emitting unit is located in the first reflective layer hole, and the fitting portion and the boundary of the shielding portion and the keycap projection area are projected to overlap.

[0018] Preferably, the first light emitting unit and the second light emitting unit are adjacent to two opposite sides of the keycap projection area, respectively.

[0019] Preferably, the light shielding plate has a light transmission portion, the shielding portion includes an outer frame portion surrounding the light transmission portion, the outer frame portion and the first light emitting unit are projected to overlap, and the light transmission portion and the second light emitting unit are projected to overlap.

[0020] Preferably, the light guide plate groove and one of the two opposite sides of the keycap projection area and the other two opposite sides of the keycap projection area, which are connected to the one of the two opposite sides, are projected to overlap.

[0021] Preferably, the first light emitting unit and the second light emitting unit are adjacent to one side of the keycap projection area.

[0022] Preferably, the light shielding plate has a light transmission portion, the shielding portion includes an outer frame portion surrounding the light transmission portion, the outer frame portion and the first light emitting unit and the second light emitting unit are projected to overlap.

[0023] Preferably, the light guide plate groove and the side have no projection overlap.

[0024] In summary, the backlight module of the present application is designed for a specific function key of a light-emitting keyboard. Therefore, when the specific function of the operation device is started, the color of the light under the specific function key can be displayed, so that the user can easily know that the specific function has been started. Therefore, the present application can conform to the specific function of the operation device and provide a corresponding configuration of the embedded keyboard module.

[0025] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments, but not as a limitation of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0026] FIG. 1 A schematic diagram of a light-emitting keyboard according to an embodiment of the present application.

[0027] FIG. 2 A partial cross-sectional view of the light-emitting keyboard in FIG. 1

[0028] FIG. 3 A partial cross-sectional view of the light-emitting keyboard in​FIG. 1 A partial explosion diagram of the backlit keyboard.

[0029] FIG. 4 for FIG. 1 A top-down view of a portion of the backlit keyboard.

[0030] FIG. 5 for FIG. 1 A top-down view of a portion of the backlit keyboard.

[0031] FIG. 6 for FIG. 1 A top-down view of a portion of the backlit keyboard.

[0032] FIG. 7A This is a top view schematic diagram showing the stacking of a backlight module and specific function keys of an illuminated keyboard according to another embodiment of the present invention.

[0033] FIG. 7B For the corresponding FIG. 7A An exploded view of the backlight module and specific function buttons in the embodiment.

[0034] FIG. 8A This is a top view schematic diagram showing the stacking of a backlight module and specific function keys of an illuminated keyboard according to another embodiment of the present invention.

[0035] FIG. 8B For the corresponding FIG. 8A An exploded view of the backlight module and specific function buttons in the embodiment.

[0036] FIG. 9A This is a top view schematic diagram showing the stacking of a backlight module and specific function keys of an illuminated keyboard according to another embodiment of the present invention.

[0037] FIG. 9B For the corresponding FIG. 9A An exploded view of the backlight module and specific function buttons in the embodiment.

[0038] FIG. 10A This is a top view schematic diagram showing the stacking of a backlight module and specific function keys of an illuminated keyboard according to another embodiment of the present invention.

[0039] FIG. 10B For the corresponding FIG. 10A An exploded view of the backlight module and specific function buttons in the embodiment.

[0040] FIG. 11A-11C This is a schematic diagram illustrating the operating mechanism of a computing device in response to an embodiment of a specific function key.

[0041] FIG. 12A schematic diagram of a light-emitting keyboard and its connection architecture with a system of a computing device. DETAILED DESCRIPTION

[0042] Referring to FIG. 1 , FIG. 1 A schematic diagram of a light-emitting keyboard LKB according to an embodiment of the present application.

[0043] As FIG. 1 shown, there are heat-emitting elements HE (e.g., integrated circuits or electronic components), a fan F, and a heat pipe HP under the light-emitting keyboard LKB, and heat dissipation is required at the heat-emitting region HR where the heat-emitting elements HE, the fan F, and the heat pipe HP overlap with the light-emitting keyboard LKB. The light-emitting keyboard LKB includes a backlight module BLM and a plurality of heat-dissipating keys KS. The backlight module BLM is provided with a bottom plate SUP, and the plurality of heat-dissipating keys KS are arranged on the bottom plate SUP. Generally, the plurality of heat-dissipating keys KS can include square keys and multiple keys (e.g., space bar). It should be noted that the number, size, and arrangement of the heat-dissipating keys KS can be determined according to actual application, and are not limited to the embodiments shown in the drawings. The backlight module BLM includes a light plate LCB, a light guide plate LGP, and a light shielding plate SS. The light plate LCB, the light guide plate LGP, and the light shielding plate SS are arranged in a stack, i.e., the light guide plate LGP is arranged on the light plate LCB, and the light shielding plate SS is arranged on the light guide plate LGP.

[0044] Referring to FIG. 2-3 , FIG. 2 A cross-sectional view of a local region T1 of the light-emitting keyboard LKB in FIG. 1 , FIG. 3 A cross-sectional view of a single heat-dissipating key KS of the light-emitting keyboard LKB in FIG. 1 , FIG. 3 The support device SSR, the trigger TE, and the reset RE are omitted from the drawings.

[0045] In this embodiment, each heat-dissipating key KS on the light-emitting keyboard LKB corresponds to one or more light-emitting units LED (e.g., light-emitting diodes) on the light plate LCB of the backlight module BLM below. In other possible embodiments, a plurality of heat-dissipating keys KS on the light-emitting keyboard LKB can correspond to a light bar on the light plate LCB of the backlight module BLM below. The backlight module BLM can have a plurality of through channels PC to respectively correspond to the plurality of heat-dissipating keys KS symmetrically. The through channels PC pass through the light plate LCB, the light guide plate LGP, and the light shielding plate SS. As FIG. 2As shown, the single heat dissipation key KS corresponds to two through channels PC below, but not limited to. The through channels PC also penetrate the key circuit board MEM, the bottom plate SUP and the reflective layer REF, that is to say, the through channels PC are formed by the perforations of the key circuit board MEM, the bottom plate SUP, the light shielding plate SS, the light guide plate LGP, the reflective layer REF and the lamp plate LCB stacked along the Z direction, wherein the perforations at least partially overlap, and the perforations of the light guide plate LGP can be larger than those of the reflective layer REF and the light shielding plate SS. In this way, the through channels PC can serve as heat dissipation channels for the heat generating area HR.

[0046] The heat dissipation key KS includes a key cap KCC, a support device SSR, a key circuit board MEM and a bottom plate SUP. The key cap KCC is arranged relative to the bottom plate SUP. The key cap KCC has an internal light transmission area KC0 for the light of the light emitting unit LED to project out to illuminate the characters on the key cap KCC. The key cap KCC also has a plurality of external light shielding areas KC1 adjacent to the internal light transmission area KC0. As shown, the positions of the external light shielding areas KC1 can correspond to the positions of the through channels PC, so that the through channels PC are located below the light shielding areas, thereby improving the upward light leakage. The support device SSR is arranged between the key cap KCC and the bottom plate SUP. When the key cap KCC is pressed, the key cap KCC will move vertically along with the support device SSR towards the bottom plate SUP. In addition, a restoring element RE, for example a rubber dome, is arranged between the key cap KCC and the bottom plate SUP, but not limited to. The main bodies of the key cap KCC, the support device SSR, the restoring element RE, the key circuit board MEM and the bottom plate SUP, etc. can be made of non-reflective / low-reflective or light-absorbing materials, thereby reducing the downward light reflection. FIG. 2 The key circuit board MEM is arranged above the backlight module BLM, and the key circuit board MEM has switch pads SP corresponding to the trigger elements TE of the heat dissipation key KS, for example membrane switches, but not limited to. In this embodiment, the key circuit board MEM includes a circuit portion EC, a plurality of circuit board holes MEMH and the switch pads SP. The circuit board holes MEMH constitute part of the through channels PC. The switch pads SP are connected to the circuit portion EC and located between the circuit board holes MEMH. In addition, the key circuit board MEM can be coated with light-absorbing materials around the through channels PC, thereby improving the upward light leakage.

[0047]

[0048] ​Each heat dissipation key KS includes a portion of a bottom plate SUP disposed between the key circuit board MEM and the backlight module BLM. In the present embodiment, the bottom plate SUP can include an annular rib Sr0, a plurality of bridging ribs Sr1 connecting the annular rib Sr0 and the support frame Sf, and a support frame Sf, and the bridging ribs Sr1, the annular rib Sr0, and the support frame Sf form a plurality of bottom plate holes SUPH therebetween. The bottom plate holes SUPH on both sides form a portion of the through channel PC. The switch contact pads SP of the key circuit board MEM are disposed corresponding to the bottom plate holes SUPH at the center of the bottom plate SUP, such that the switch contact pads SP can partially enter the bottom plate holes SUPH at the center of the bottom plate SUP without interfering with the light shield plate SS and the light emitting units LED thereunder.

[0049] The light shield plate SS is disposed below the bottom plate SUP. In the present embodiment, the light shield plate SS has a plurality of light shield plate through holes SSH, a plurality of light reduction patterns LRP, and a light shield frame SSF. The light shield plate through holes SSH are respectively located within the light reduction patterns LRP, and the light shield frame SSF corresponds to the support frame Sf of the bottom plate SUP. The light shield plate through holes SSH form a portion of the through channel PC. The periphery of the through channel PC is provided with the light reduction patterns LRP to shield light, wherein the light reduction patterns LRP can be a ring-shaped black paint coated on the upper surface or the lower surface of the light shield plate SS.

[0050] The light guide plate LGP is disposed below the light shield plate SS. In the present embodiment, the light guide plate LGP has a light guide hole L0, a plurality of light guide plate through holes LGPH, and a plurality of diffusion patterns DP. The light emitting units LED can be located in the light guide hole L0. The top surface and / or the bottom surface of the light guide plate LGP close to the light guide hole L0 can have adhesive around the light guide hole L0 to respectively bond the light shield plate SS and / or the light plate LCB. The light guide plate through holes LGPH correspond to the positions of the light shield plate through holes SSH and form a portion of the through channel PC. The diffusion patterns DP of the light guide plate LGP can be composed of microstructure regions and correspond to the positions of the bottom plate holes SUPH of the bottom plate SUP, so as to guide the light transmitted in the light guide plate LGP to be upwardly emitted. In the top view along the Z direction, the light reduction patterns LRP of the light shield plate SS can be provided with the diffusion patterns DP of the light guide plate LGP on the adjacent sides to guide the light of the light emitting units LED to illuminate the corresponding heat dissipation keys KS. In addition, light reduction patterns LRP can also be provided on the light guide plate LGP, which can be a ring-shaped black paint coated on the upper surface or the lower surface of the light guide plate LGP at the periphery of the through channel PC, or can be a light-absorbing material coated on the hole walls of the light guide plate through holes LGPH, or can be adhesive provided on the upper and lower surfaces of the light guide plate through holes LGPH adjacent to the periphery of the through channel PC, so as to improve the upward or downward light leakage of the light guide plate LGP in the through channel PC.

[0051] The lamp plate LCB is disposed below the light guide plate LGP and can include a reflective layer REF. In the present embodiment, the lamp plate LCB has a light emitting unit LED, a plurality of lamp plate through holes LCBH, a plurality of light reduction patterns LRP and diffusion patterns DP, and a plurality of main traces HT and sub traces ST. The light emitting unit LED is connected between two sub traces ST, and the light emitting unit LED is connected between two main traces HT via the two sub traces ST. In the present embodiment, the main traces HT and the sub traces ST form a lighting circuit of the light emitting unit LED, the two main traces HT are main driving lines of the light emitting unit LED, and the two sub traces ST are sub driving lines of the light emitting unit LED. The light emitting unit LED can be a white light emitting diode or a combination of red, green and blue light emitting diodes, depending on the actual application. Generally speaking, the main traces HT are larger cross-sectional area traces that can span a plurality of heat dissipation keys KS. The lamp plate through holes LCBH correspond to the positions of the light guide plate through holes LGPH and the light shielding plate through holes SSH, and also form part of the through channel PC. The light reduction pattern LRP can be a ring-shaped black paint formed on the reflective layer REF to be disposed at the periphery of the through channel PC. The diffusion pattern DP can also be formed by a microstructure region and can be formed on the reflective layer REF, and the diffusion pattern DP is disposed around the light reduction pattern LRP to guide the light of the light emitting unit LED to illuminate the corresponding heat dissipation key KS. FIG. 2 In the embodiment shown, diffusion patterns DP are formed on both the light guide plate LGP and the lamp plate LCB, but in other embodiments, this is not limited, and diffusion patterns DP can be formed on one of the light guide plate LGP and the lamp plate LCB, i.e., diffusion patterns DP can be formed on the light guide plate LGP and / or the lamp plate LCB.

[0052] Please refer to FIG. 4 , FIG. 4 for FIG. 1 a top view schematic diagram of a partial region T1 of the light emitting keyboard LKB, in which the key cap KCC, the support device SSR, the trigger TE and the reset RE are omitted.

[0053] The present embodiment takes two adjacent heat dissipation keys KS in the partial region T1 as an example for illustration. As FIG. 4 shown, the two heat dissipation keys KS in the partial region T1 each have a key cap projection area KCCP of the key cap KCC, and each circuit portion EC of the key circuit board MEM extends across the range of each key cap projection area KCCP. In addition, according to FIG. 3-4As shown, the rib portions of the bottom plate SUP (including the annular ribs Sr0 and the bridging ribs Sr1) extend across the range of each keycap projection area KCCP. The through channels PC corresponding to a single heat dissipation key KS can include left through channels PC-L and right through channels PC-R. Two left through channels PC-L correspond to two heat dissipation keys KS and pass through the lamp plate LCB, the light guide plate LGP, and the light shielding plate SS; and two right through channels PC-R also correspond to two heat dissipation keys KS and pass through the lamp plate LCB, the light guide plate LGP, and the light shielding plate SS, each pair of left through channels PC-L and right through channels PC-L are symmetrically arranged relative to the heat dissipation key KS corresponding thereto. The periphery of each left through channel PC-L is provided with a left light reduction pattern LRP-L, and two left diffusion patterns DP-L are arranged on the upper and lower sides of each left light reduction pattern LRP-L; and the periphery of each right through channel PC-R is provided with a right light reduction pattern LRP-R, and two right diffusion patterns DP-R are arranged on the upper and lower sides of each right light reduction pattern LRP-R. That is, the light reduction pattern LRP corresponding to a single heat dissipation key KS can include a left light reduction pattern LRP-L and a right light reduction pattern LRP-R, and the diffusion pattern DP corresponding to a single heat dissipation key KS can include a left diffusion pattern DP-L and a right diffusion pattern DP-R. That is, each light reduction pattern LRP is provided with two diffusion patterns DP on the adjacent sides, and in the top view along the Z direction, each light reduction pattern LRP is located between the two diffusion patterns DP on the adjacent sides.

[0054] The left light-reducing pattern LRP-L and the left diffusion pattern DP-L can form a left heat-dissipating optical pattern group OPG-L, and the right light-reducing pattern LRP-R and the right diffusion pattern DP-R can form a right heat-dissipating optical pattern group OPG-R. In the present embodiment, the backlight module BLM corresponding to each heat-dissipating key KS has two through passages PC (i.e., a left through passage PC-L and a right through passage PC-R), and the left heat-dissipating optical pattern group OPG-L and the right heat-dissipating optical pattern group OPG-R corresponding to each heat-dissipating key KS are symmetrically located on opposite sides of the key cap projection area KCCP. In the present embodiment, the two left heat-dissipating optical pattern groups corresponding to the two heat-dissipating keys KS have the same pattern, and the two right heat-dissipating optical pattern groups OPG-R corresponding to the two heat-dissipating keys KS also have the same pattern. In actual operation, since the circuit portion EC of the key circuit MEM plate of the square key can not be transparent to light and is not suitable to pass above the diffusion pattern DP, the vertically extending portion of the circuit portion EC is preferably located between the left heat-dissipating optical pattern group OPG-L and the right heat-dissipating optical pattern group OPG-R corresponding to a single heat-dissipating key KS. In actual operation, since the rib portion (including the annular rib Sr0 and the bridging rib Sr1) of the bottom plate SUP of the square key can not be transparent to light and is not suitable to pass above the diffusion pattern DP, the annular rib Sr0 and the bridging rib Sr1 of the bottom plate SUP are preferably located between the left heat-dissipating optical pattern group OPG-L and the right heat-dissipating optical pattern group OPG-R corresponding to a single heat-dissipating key KS. That is, in the top view along the Z direction, the left light-reducing pattern LRP-L and the left diffusion pattern DP-L are located on the same side of the circuit portion EC and on the same side of the rib portion (including the annular rib Sr0 and the bridging rib Sr1) of the bottom plate SUP, and the right light-reducing pattern LRP-R and the right diffusion pattern DP-R are located on the same side of the circuit portion EC and on the same side of the rib portion (including the annular rib Sr0 and the bridging rib Sr1) of the bottom plate SUP. Moreover, in the top view along the Z direction, the left light-reducing pattern LRP-L and the right light-reducing pattern LRP-R are located on opposite sides of the circuit portion EC and on opposite sides of the rib portion (including the annular rib Sr0 and the bridging rib Sr1) of the bottom plate SUP, and the left diffusion pattern DP-L and the right diffusion pattern DP-R are located on opposite sides of the circuit portion EC and on opposite sides of the rib portion (including the annular rib Sr0 and the bridging rib Sr1) of the bottom plate SUP.

[0055] Please refer to FIG. 5 , FIG. 5 for FIG. 1 the top view of the partial region T2 of the light-emitting keyboard LKB, in which the key cap KCC, the support device SSR, the trigger TE, and the reset RE are omitted. The present embodiment takes the four heat-dissipating keys KS adjacent in the partial region T2 as an example for description. The four heat-dissipating keys KS covered in the partial region T2 can also adopt the technical features described above, and thus further description is omitted.FIG. 5 The description mainly focuses on the technical features between the heat-dissipating keys KS of different rows in the light-emitting keyboard LKB.

[0056] As shown in FIG. 5 , the heat-dissipating key KS on the left side of the upper row ROW1 is adjacent to the heat-dissipating key KS on the left side of the middle row ROW2 in the Y direction but staggered in the X direction, and the heat-dissipating key KS on the right side of the upper row ROW1 is adjacent to the heat-dissipating key KS on the right side of the middle row ROW2 in the Y direction but staggered in the X direction. The right heat-dissipating optical pattern group OPG-R (formed by the right light-reducing pattern LRP-R and the right diffusion pattern DP-R) corresponding to the heat-dissipating key KS on the left side of the upper row ROW1 at least partially overlaps the left heat-dissipating optical pattern group OPG-L (formed by the left light-reducing pattern LRP-L and the left diffusion pattern DP-L) corresponding to the heat-dissipating key KS on the left side of the middle row ROW2 in the Y direction, i.e., the two partially overlapped heat-dissipating optical pattern groups form a connection line C1. In addition, the right heat-dissipating optical pattern group OPG-R (formed by the right light-reducing pattern LRP-L and the right diffusion pattern DP-L) corresponding to the heat-dissipating key KS on the right side of the upper row ROW1 at least partially overlaps the left heat-dissipating optical pattern group OPG-L (formed by the left light-reducing pattern LRP-L and the left diffusion pattern DP-L) corresponding to the heat-dissipating key KS on the right side of the middle row ROW2 in the Y direction, i.e., the two partially overlapped heat-dissipating optical pattern groups also form the connection line C1.

[0057] Furthermore, the left heat-dissipating optical pattern group OPG-L (formed by the left light-reducing pattern LRP-L and the left diffusion pattern DP-L) corresponding to the heat-dissipating key KS on the right side of the upper row ROW1 at least partially overlaps the right heat-dissipating optical pattern group OPG-R (formed by the right light-reducing pattern LRP-R and the right diffusion pattern DP-R) corresponding to the heat-dissipating key KS on the left side of the middle row ROW2 in the Y direction, i.e., the two partially overlapped heat-dissipating optical pattern groups form a connection line C2. In summary, the connection line C1 is formed by the right heat-dissipating optical pattern group OPG-R of the higher row and the left heat-dissipating optical pattern group OPG-L of the lower row corresponding to the two heat-dissipating keys KS adjacent in the Y direction but staggered in the X direction, and the connection line C2 is formed by the left heat-dissipating optical pattern group OPG-L of the higher row and the right heat-dissipating optical pattern group OPG-R of the lower row corresponding to the two heat-dissipating keys KS adjacent in the Y direction but staggered in the X direction. FIG. 5 As shown in

[0058] Please refer to FIG. 6 , FIG. 6 for FIG. 1This is a top-view schematic diagram of a partial area T3 of the backlit keyboard LKB, omitting the keycaps KCC, support device SSR, trigger element TE, and reset element RE. This embodiment uses four adjacent heat-dissipating keys KS within partial area T3 as an example. The four heat-dissipating keys KS within partial area T3 can also employ the technical features described above, and will not be repeated here. Regarding... FIG. 6 The description mainly focuses on the technical features of the heat dissipation keys KS in different rows of the backlit keyboard LKB.

[0059] like FIG. 6 As shown, the heat dissipation button KS located to the left of ROW2 in the middle column is adjacent to the heat dissipation button KS located to the left of ROW3 below in the Y direction but offset in the X direction. Similarly, the heat dissipation button KS located to the right of ROW2 in the middle column is adjacent to the heat dissipation button KS located to the right of ROW3 below in the Y direction but offset in the X direction. The right heat-reducing optical pattern group OPG-R (formed by its right subtraction pattern LRP-R and right diffusion pattern DP-R) corresponding to the heat dissipation button KS located to the left of ROW2 in the middle column at least partially overlaps the switch pad SP corresponding to the heat dissipation button KS located to the left of ROW3 below in the Y direction. That is, these partially overlapping right heat-reducing optical pattern groups OPG-R and the switch pad SP form a connection line D1. Furthermore, the right heat-reducing optical pattern group OPG-R (formed by its right light-reducing pattern LRP-R and right light-diffusing pattern DP-R) of the heat dissipation button KS located on the right side of ROW2 in the middle column at least partially overlaps the switch pad SP corresponding to the heat dissipation button KS located on the right side of ROW3 in the following direction in the Y direction. That is, these partially overlapping right heat-reducing optical pattern groups OPG-R and switch pad SP also form a connection line D1.

[0060] Furthermore, the left heat-reducing optical pattern group OPG-L (formed by its left light-reducing pattern LRP-L and left light-diffusing pattern DP-L) of the heat dissipation button KS located on the right side of ROW2 in the middle column at least partially overlaps in the Y direction with the button gap area G outside the heat dissipation buttons KS located on the left / right sides of ROW3 below. That is, these partially overlapping left heat-reducing optical pattern groups OPG-L and button gap area G form a connection line D2. In summary, connection line D1 is formed by the right heat-reducing optical pattern group OPG-R of two heat dissipation buttons KS that are adjacent in the Y direction but staggered in the X direction and the corresponding switch pad SP in the lower column. Connection line D2 is formed by the left heat-reducing optical pattern group OPG-L of two heat dissipation buttons KS that are adjacent in the Y direction but staggered in the X direction and the corresponding button gap area G in the lower column. FIG. 6 The image shows a special layout where the heat dissipation buttons KS in two adjacent columns of the backlit keyboard LKB are offset by 1 / 4 of the button center.

[0061] In summary, the present application designs one or more through channels in the light-emitting keyboard and the backlight module used thereby. In this way, the through channels can be used to dissipate heat from the heat-generating area below the heat-dissipating key, thereby improving the heat dissipation efficiency of the light-emitting keyboard. In addition, the present application designs a light-reducing pattern on the periphery of the through channel to shield light and a diffusion pattern on the adjacent side to guide light to illuminate the heat-dissipating key, thereby improving the overall uniformity of light emission and solving the upward / downward light leakage problem that may exist in the through channel.

[0062] On the other hand, the light-emitting keyboard of the present application can also have at least one special function key to correspond to the special function of the computing device to which it is connected or set, such as artificial intelligence assistance function. When the user presses this special function key, the artificial intelligence assistance function is activated. The backlight module of the light-emitting keyboard can have a special design and configuration corresponding to this special function key.

[0063] Please refer to FIG. 7A-7B , FIG. 7A for the top view of the special function key KS-1 of the light-emitting keyboard LKB and the backlight module BLM according to another embodiment of the present application, and FIG. 7B for the layered exploded view of the special function key KS-1 and the backlight module BLM. In this embodiment, the light-emitting keyboard LKB can include the backlight module BLM and the special function key KS-1. The special function key KS-1 is located above the backlight module BLM. In addition to providing the overall general backlight function of the light-emitting keyboard LKB, the backlight module BLM can also provide the exclusive backlight function of the individual key of the special function key KS-1. It should be noted that in the light-emitting keyboard LKB of this embodiment, the special function key KS-1 can include the aforementioned bottom plate SUP and key circuit board MEM, which can be set above the backlight module BLM. However, in accordance with the present embodiment, there is no special design and configuration for the bottom plate SUP and the key circuit board MEM, so FIG. 7A-7B The bottom plate SUP and the key circuit board MEM are omitted to make the display of the drawing simple and clear.

[0064] As FIG. 7A-7BAs shown, the backlight module BLM can include a light plate LCB, a light guide plate LGP, and a light shield plate SS. The light shield plate SS, the light guide plate LGP, and the light plate LCB are stacked from top to bottom. The light plate LCB can have first light emitting units LED-1 and second light emitting units LED-2. The first light emitting units LED-1 and the second light emitting units LED-2 are, for example, light emitting diodes. In the present embodiment, the first light emitting units LED-1 are side view LEDs, while the second light emitting units LED-2 are top view LEDs. The first light emitting units LED-1 can be used to provide the general backlight function of the whole light keyboard LKB, and thus the number thereof can be multiple. The second light emitting units LED-2 are used to provide the exclusive backlight function of the individual key of the specific function key KS-1, and thus the number thereof depends on the number of the specific function key KS-1. Regarding the light emitting configuration of the light plate LCB, the first light emitting units LED-1 and the second light emitting units LED-2 can be configured to emit light simultaneously or at different times. The first light emitting units LED-1 and the second light emitting units LED-2 are respectively adjacent to two opposite side edges of the key cap projection area KCCP-1 of the specific function key KS-1, i.e., the first light emitting units LED-1 are adjacent to the side edge S2, and the second light emitting units LED-2 are adjacent to the side edge S1.

[0065] As FIG. 7A-7BAs shown, the light guide plate LGP has a first light guide hole L0-1 and a second light guide hole L0-2. The first light emitting unit LED-1 can be located in the first light guide hole L0-1, while the second light emitting unit LED-2 can be located in the second light guide hole L0-2. The light guide plate LGP can have adhesive around the first light guide hole L0-1 and the second light guide hole L0-2 on the top and / or bottom surface thereof, to adhere the light shielding plate SS and / or the light cover plate LCB, respectively. Since the first light guide hole L0-1 and the second light guide hole L0-2 are aligned with the first light emitting unit LED-1 and the second light emitting unit LED-2, respectively, the first light guide hole L0-1 and the second light guide hole L0-2 are adjacent to opposite side edges of the keycap casting projection KCCP-1 of the specific function key KS-1, i.e. the first light guide hole L0-1 is adjacent to the side edge S2, while the second light guide hole L0-2 is adjacent to the side edge S1. The light guide plate LGP further has a light guide plate slot LS. The light guide plate slot LS has a reverse U-shaped outer profile. The light guide plate slot LS is arranged around one of the first light emitting unit LED-1 and the second light emitting unit LED-2. In the stacking direction (longitudinal direction), the light guide plate slot LS overlaps with the boundary projection of the keycap casting projection KCCP-1 of the specific function key KS-1. Specifically, the light guide plate slot LS overlaps with one of the two aforementioned side edges and the other two opposite side edges of the keycap casting projection KCCP-1, which are connected to one of the two aforementioned opposite side edges. In this embodiment, the light guide plate slot LS overlaps with the side edge S1 and the side edges S3 and S4 of the keycap casting projection KCCP-1, which are adjacent to the side edge S1 and the side edge S2.

[0066] As FIG. 7A-7BAs shown, the light shield SS can have a shielding portion MP and a light transmitting portion TP. The shielding portion MP and the light transmitting portion TP can be stacked in various manners to form the light shield SS. The shielding portion MP is opaque, while the light transmitting portion TP can have both reflective and translucent properties, i.e., the light transmitting portion TP can reflect some light and allow some light to pass through. For example, the shielding portion MP can be black paint, and the light transmitting portion TP can be white paint, but not limited thereto. In the present embodiment, the shielding portion MP includes an outer frame portion MP-1 and an inner block portion MP-2, where the outer frame portion MP-1 surrounds the light transmitting portion TP, and the inner block portion MP-2 is located within the range of the light transmitting portion TP. The shielding portion MP is projectedly overlapped with the first light emitting unit LED-1 and the second light emitting unit LED-2. Specifically, in the stacking direction (the longitudinal direction), the first light emitting unit LED-1 is projectedly overlapped with the outer frame portion MP-1, and the second light emitting unit LED-2 is projectedly overlapped with the inner block portion MP-2. The shielding portion MP serves as a means for adjusting the light emitting amount of the first light emitting unit LED-1 and the second light emitting unit LED-2 toward the specific function key KS-1. The light guide plate groove LS is shielded by the shielding portion MP. That is, the light guide plate groove LS is projectedly overlapped with the shielding portion MP. Specifically, the light guide plate groove LS is projectedly overlapped with the outer frame portion MP-1, and is not projectedly overlapped with the inner block portion MP-2. The light guide plate groove LS is disposed around the light transmitting portion TP, i.e., is also not projectedly overlapped with the light transmitting portion TP.

[0067] Further, as FIG. 7A-7BAs shown, the backlight module BLM can further include a reflective layer REF. The reflective layer REF can be disposed between the light guide plate LGP and the lamp plate LCB. The reflective layer REF corresponds to the first light emitting unit LED-1 and the second light emitting unit LED-2 to have a first reflective layer hole RH-1 and a second reflective layer hole RH-2. The first light emitting unit LED-1 can be located in the first reflective layer hole RH-1, while the second light emitting unit LED-2 can be located in the second reflective layer hole RH-2. The first light guide hole L0-1 is vertically aligned with the first reflective layer hole RH-1, while the second light guide hole L0-2 is vertically aligned with the second reflective layer hole RH-2. Thus, the first light emitting unit LED-1 can simultaneously pass through the first light guide hole L0-1 and the first reflective layer hole RH-1, while the second light emitting unit LED-2 can simultaneously pass through the second light guide hole L0-2 and the second reflective layer hole RH-2. The reflective layer REF can further have a fitting portion RA. The fitting portion RA corresponds to the outer shape of the light guide plate groove LS to have an inverted U-shaped outer shape. The light guide plate groove LS is vertically aligned with the fitting portion RA. The fitting portion RA overlaps with the boundary projection of the shielding portion MP of the light shield plate SS and the key cap projection area KCCP-1. The reflective layer REF can pass through the light guide plate groove LS upward by its fitting portion RA and be bonded with the lower surface of the light shield plate SS to cover the edge of the light guide plate groove LS of the light guide plate LGP, thereby providing the effect of preventing light leakage. Specifically, the fitting portion RA can have adhesive to bond the light shield plate SS upward. However, this is not limited. Before the reflective layer REF is bonded with the light shield plate SS, the fitting portion RA or the light shield plate SS can be given a predetermined shape by embossing or bulging technology to improve the bonding efficiency. For example, the fitting portion RA can be black, while the portion of the reflective layer REF other than the fitting portion RA can be white.

[0068] Please refer to FIG. 8A-8B , FIG. 8A for the top view of the specific function key KS-1 of the light emitting keyboard LKB and the backlight module BLM according to another embodiment of the present application, and FIG. 8B for the layered exploded view of the specific function key KS-1 and the backlight module BLM. In this embodiment, the light emitting keyboard LKB can include the backlight module BLM and the specific function key KS-1. The specific function key KS-1 is located above the backlight module BLM. The backlight module BLM can provide the backlight function for the specific function key KS-1 in addition to providing the backlight function for the whole light emitting keyboard LKB. It should be noted that in the light emitting keyboard LKB of this embodiment, the specific function key KS-1 can include the aforementioned bottom plate SUP and the key circuit board MEM, which can be disposed above the backlight module BLM. However, in compliance with the present embodiment, the bottom plate SUP and the key circuit board MEM are not specially designed and configured, so in this embodiment, the bottom plate SUP and the key circuit board MEM can be the same as those in the light emitting keyboard LKB of the first embodiment. FIG. 8A-8BThe base plate SUP and the button circuit board MEM are omitted to keep the drawing simple.

[0069] like FIG. 8A-8B As shown, the backlight module (BLM) may include a lamp board (LCB), a light guide plate (LGP), and a light shield (SS). The light shield (SS), the light guide plate (LGP), and the lamp board (LCB) are stacked from top to bottom. The lamp board (LCB) may have a first light-emitting unit (LED-1) and a second light-emitting unit (LED-2). The first light-emitting unit (LED-1) and the second light-emitting unit (LED-2) are, for example, light-emitting diodes (LEDs). In this embodiment, both the first light-emitting unit (LED-1) and the second light-emitting unit (LED-2) are side-emitting LEDs, emitting light towards the side S1 of the keycap projection area KCCP-1 of the specific function key KS-1. The first light-emitting unit (LED-1) can be used to provide the general backlight function of the entire backlit keyboard (LKB), so there can be multiple of them. The second light-emitting unit (LED-2) is used to provide the dedicated backlight function of a single key of the specific function key KS-1, and its number depends on the number of specific function keys KS-1. Regarding the light-emitting configuration of the lamp board (LCB), the first light-emitting unit (LED-1) and the second light-emitting unit (LED-2) can be configured to emit light simultaneously or at different times. Furthermore, in this embodiment, the light color of the first light-emitting unit LED-1 and the light color of the second light-emitting unit LED-2 can be configured to be different, so that the exclusive backlight of the specific function key KS-1 is different from the normal backlight of other general keys. Both the first light-emitting unit LED-1 and the second light-emitting unit LED-2 are adjacent to the side S2 of the keycap projection area KCCP-1 of the specific function key KS-1. The first light-emitting unit LED-1 and the second light-emitting unit LED-2 are arranged side by side and emit light in the same direction (i.e., towards the side S1).

[0070] like FIG. 8A-8BAs shown, the light guide plate LGP has a first light guide hole L0-1 and a second light guide hole L0-2. The first light emitting unit LED-1 can be located in the first light guide hole L0-1, and the second light emitting unit LED-2 can be located in the second light guide hole L0-2. The light guide plate LGP can have adhesive around the first light guide hole L0-1 and the second light guide hole L0-2 on the top surface and / or the bottom surface thereof, to adhere the light shielding plate SS and / or the light plate LCB, respectively. Since the first light guide hole L0-1 and the second light guide hole L0-2 are aligned with the first light emitting unit LED-1 and the second light emitting unit LED-2, respectively, the first light guide hole L0-1 and the second light guide hole L0-2 are also adjacent to the side edge S2 of the keycap projection area KCCP-1 of the specific function key KS-1, and are arranged side by side. The light guide plate LGP also has a light guide plate groove LS. The light guide plate groove LS has a reverse U-shaped outer shape. The light guide plate groove LS is arranged around one of the first light emitting unit LED-1 and the second light emitting unit LED-2. In the stacking direction (the longitudinal direction), the light guide plate groove LS overlaps the boundary projection of the keycap projection area KCCP-1 of the specific function key KS-1. Specifically, the light guide plate groove LS overlaps one of the aforementioned two side edges and the other two opposite side edges of the keycap projection area KCCP-1, which are connected to one of the aforementioned two opposite side edges. In this embodiment, the light guide plate groove LS overlaps the side edge S1 and the side edges S3 and S4 of the keycap projection area KCCP-1, and does not overlap the side edge S2 adjacent to the first light emitting unit LED-1 and the second light emitting unit LED-2, wherein the side edges S3 and S4 are adjacent edges connected to the side edge S1 and the side edge S2.

[0071] As FIG. 8A-8BAs shown, the light shield SS can have a shielding portion MP and a light transmitting portion TP. The shielding portion MP and the light transmitting portion TP can be stacked in various manners to form the light shield SS. The shielding portion MP is opaque, while the light transmitting portion TP can have both reflective and translucent properties, i.e., the light transmitting portion TP can reflect some light and allow some light to pass through. For example, the shielding portion MP can be black paint, and the light transmitting portion TP can be white paint, but not limited thereto. In the present embodiment, the shielding portion MP includes an outer frame portion MP-1, where the outer frame portion MP-1 surrounds the light transmitting portion TP. The shielding portion MP is projectedly overlapped with the first light emitting unit LED-1 and the second light emitting unit LED-2. Specifically, in the stacking direction (longitudinal direction), the outer frame portion MP-1 is projectedly overlapped with the first light emitting unit LED-1 and the second light emitting unit LED-2. The shielding portion MP serves as a means for adjusting the light emitting amount of the first light emitting unit LED-1 and the second light emitting unit LED-2 toward the specific function key KS-1. The light guide plate groove LS is shielded by the shielding portion MP. That is, the light guide plate groove LS is projectedly overlapped with the shielding portion MP. Specifically, the light guide plate groove LS is projectedly overlapped with the outer frame portion MP-1. The light guide plate groove LS is disposed around the light transmitting portion TP, i.e., no projected overlap with the light transmitting portion TP.

[0072] Further, as FIG. 8A-8BAs shown, the backlight module BLM can further include a reflective layer REF. The reflective layer REF can be disposed between the light guide plate LGP and the lamp plate LCB. The reflective layer REF corresponds to the first light emitting unit LED-1 and the second light emitting unit LED-2 to have a first reflective layer hole RH-1 and a second reflective layer hole RH-2. The first light emitting unit LED-1 can be located in the first reflective layer hole RH-1, while the second light emitting unit LED-2 can be located in the second reflective layer hole RH-2. The first light guide hole L0-1 is vertically aligned with the first reflective layer hole RH-1, while the second light guide hole L0-2 is vertically aligned with the second reflective layer hole RH-2. Thus, the first light emitting unit LED-1 can simultaneously pass through the first light guide hole L0-1 and the first reflective layer hole RH-1, while the second light emitting unit LED-2 can simultaneously pass through the second light guide hole L0-2 and the second reflective layer hole RH-2. The reflective layer REF can further have a fitting portion RA. The fitting portion RA corresponds to the outer shape of the light guide plate groove LS to have an inverted U-shaped outer shape. The reflective layer REF can pass through the light guide plate groove LS upward by its fitting portion RA and be engaged with the lower surface of the light shield plate SS to cover the edge of the light guide plate groove LS of the light guide plate LGP, thereby providing the effect of preventing light leakage. Specifically, the fitting portion RA can have an adhesive to upwardly adhere the light shield plate SS. Before the reflective layer REF is adhered to the light shield plate SS, the fitting portion RA or the light shield plate SS can be given a predetermined shape by embossing or bulging technology to improve the adhesion efficiency. For example, the fitting portion RA can be black, while the portion of the reflective layer REF other than the fitting portion RA can be white, but the disclosure is not limited thereto.

[0073] Please refer to FIG. 9A-9B , FIG. 9A for a top view of a specific function key KS-1 of a light emitting keyboard LKB and a backlight module BLM according to another embodiment of the disclosure, and FIG. 9B for a layered exploded view of the specific function key KS-1 and the backlight module BLM. In this embodiment, the light emitting keyboard LKB can include the backlight module BLM and the specific function key KS-1. The specific function key KS-1 is located above the backlight module BLM. The backlight module BLM can provide not only the general backlight function of the light emitting keyboard LKB as a whole, but also the exclusive backlight function of the individual key of the specific function key KS-1. It should be noted that in the light emitting keyboard LKB of this embodiment, the specific function key KS-1 can include the aforementioned bottom plate SUP, which can be disposed above the backlight module BLM and below the key circuit board MEM. However, in compliance with the fact that there is no special design and configuration for the bottom plate SUP in this embodiment, the bottom plate SUP is omitted in the figure for the purpose of displaying the figure simply and clearly. FIG. 9A-9B The bottom plate SUP is omitted for the purpose of displaying the figure simply and clearly.

[0074] As FIG. 9A-9BAs shown, the backlight module BLM can include a light plate LCB, a light guide plate LGP, and a light shield plate SS. The light shield plate SS, the light guide plate LGP, and the light plate LCB are stacked from top to bottom. The light plate LCB can have a first light emitting unit LED-1. The first light emitting unit LED-1 is, for example, a light emitting diode. In the present embodiment, the first light emitting unit LED-1 is a side light emitting type light emitting diode to emit light toward a side edge S1 of the keycap projection area KCCP-1 of the specific function key KS-1. The first light emitting unit LED-1 can be used to provide the general backlight function of the light emitting keyboard LKB as a whole, and thus the number thereof can be multiple. The specific function key KS-1 can include a key circuit board MEM. The difference between the present embodiment and the above-mentioned embodiments is that, in the present embodiment, the key circuit board MEM can have a second light emitting unit LED-2, i.e., the second light emitting unit LED-2 is not provided on the light plate LCB. The second light emitting unit LED-2 can be provided on the upper surface of the key circuit board MEM, i.e., in a different layer of the light emitting keyboard LKB from the first light emitting unit LED-1. The second light emitting unit LED-2 is, for example, a light emitting diode. In the present embodiment, the second light emitting unit LED-2 is an upward light emitting type light emitting diode. The second light emitting unit LED-2 is used to provide the exclusive backlight function of the individual key of the specific function key KS-1, and thus the number thereof depends on the number of the specific function key KS-1. Regarding the light emitting configuration of the light plate LCB, the first light emitting unit LED-1 and the second light emitting unit LED-2 can be configured to emit light simultaneously or at different times. The first light emitting unit LED-1 and the second light emitting unit LED-2 are respectively adjacent to two opposite side edges of the keycap projection area KCCP-1 of the specific function key KS-1, i.e., the first light emitting unit LED-1 is adjacent to the side edge S2, and the second light emitting unit LED-2 is adjacent to the side edge S1. FIG. 7A-7B and FIG. 8A-8B The difference between the present embodiment and the above-mentioned embodiments is that, in the present embodiment, the key circuit board MEM can have a second light emitting unit LED-2, i.e., the second light emitting unit LED-2 is not provided on the light plate LCB. The second light emitting unit LED-2 can be provided on the upper surface of the key circuit board MEM, i.e., in a different layer of the light emitting keyboard LKB from the first light emitting unit LED-1. The second light emitting unit LED-2 is, for example, a light emitting diode. In the present embodiment, the second light emitting unit LED-2 is an upward light emitting type light emitting diode. The second light emitting unit LED-2 is used to provide the exclusive backlight function of the individual key of the specific function key KS-1, and thus the number thereof depends on the number of the specific function key KS-1. Regarding the light emitting configuration of the light plate LCB, the first light emitting unit LED-1 and the second light emitting unit LED-2 can be configured to emit light simultaneously or at different times. The first light emitting unit LED-1 and the second light emitting unit LED-2 are respectively adjacent to two opposite side edges of the keycap projection area KCCP-1 of the specific function key KS-1, i.e., the first light emitting unit LED-1 is adjacent to the side edge S2, and the second light emitting unit LED-2 is adjacent to the side edge S1.

[0075] As FIG. 9A-9BAs shown, the light guide plate LGP has a first light guide hole L0-1. A first light-emitting unit LED-1 can be located in the first light guide hole L0-1. The top and / or bottom surfaces of the light guide plate LGP near the first light guide hole L0-1 may have adhesive surrounding the first light guide hole L0-1 to respectively adhere the light shield SS and / or the lamp plate LCB. Since the first light guide hole L0-1 is aligned with the first light-emitting unit LED-1, the first light guide hole L0-1 is also adjacent to the side S2 of the keycap projection area KCCP-1 of the specific function key KS-1. The light guide plate LGP also has a light guide groove LS. The light guide groove LS has an inverted U-shaped shape. The light guide groove LS is arranged around one of the first light-emitting units LED-1 and the second light-emitting unit LED-2. In the stacking direction (longitudinal), the light guide groove LS overlaps with the boundary projection of the keycap projection area KCCP-1 of the specific function key KS-1. Specifically, the light guide plate groove LS overlaps with one of the aforementioned two sides and the other two opposite sides of the keycap projection area KCCP-1, and these other two opposite sides are connected to one of the aforementioned two opposite sides. In this embodiment, the light guide plate groove LS overlaps with side S1 and side S3 and side S4 of the keycap projection area KCCP-1, and has no projection overlap with side S1 adjacent to the second light-emitting unit LED-2, wherein side S3 and side S4 are adjacent sides connected to side S1 and side S2.

[0076] like FIG. 9A-9B As shown, the light-shielding plate SS may have a shielding portion MP and a light-transmitting portion TP. The shielding portion MP and the light-transmitting portion TP can be stacked in various ways to form the light-shielding plate SS. The shielding portion MP is opaque, while the light-transmitting portion TP may simultaneously have reflective and semi-transparent properties; that is, the light-transmitting portion TP can reflect some light while allowing some light to pass through. For example, the shielding portion MP may be black paint, and the light-transmitting portion TP may be white paint, but this is not a limitation. In this embodiment, the shielding portion MP includes an outer frame portion MP-1, which surrounds the light-transmitting portion TP. The shielding portion MP overlaps with the projection of the first light-emitting unit LED-1. Specifically, in the stacking direction (longitudinal), the outer frame portion MP-1 overlaps with the projection of the first light-emitting unit LED-1. The shielding portion MP serves as a means of adjusting the amount of light emitted by the first light-emitting unit LED-1 toward the specific function button KS-1. The light guide plate groove LS is shielded by the shielding portion MP. That is, the light guide plate groove LS overlaps with the projection of the shielding portion MP. Specifically, the light guide plate groove LS overlaps with the projection of the outer frame MP-1. The light guide plate groove LS is arranged around the light-transmitting portion TP, that is, it does not overlap with the projection of the light-transmitting portion TP. The second light-emitting unit LED-2 overlaps with the projection of the light-transmitting portion TP, that is, in the stacking direction (longitudinal) top view, the second light-emitting unit LED-2 is located within the range of the light-transmitting portion TP.

[0077] Furthermore, such asFIG. 9A-9B As shown, the backlight module BLM can further include a reflective layer REF. The reflective layer REF can be disposed between the light guide plate LGP and the lamp plate LCB. The reflective layer REF corresponds to the first light emitting unit LED-1 to have a first reflective layer hole RH-1. The first light emitting unit LED-1 can be located in the first reflective layer hole RH-1. The first light guide hole L0-1 and the first reflective layer hole RH-1 are vertically aligned. Thus, the first light emitting unit LED-1 can pass through the first light guide hole L0-1 and the first reflective layer hole RH-1 at the same time. The reflective layer REF can further have a fitting portion RA. The fitting portion RA corresponds to the outer shape of the light guide plate groove LS to have an inverted U-shaped outer shape. The reflective layer REF can pass through the light guide plate groove LS upwardly by the fitting portion RA thereof and be engaged with the lower surface of the light shield plate SS to cover the edge of the light guide plate groove LS of the light guide plate LGP, thereby providing the effect of preventing light leakage. Specifically, the fitting portion RA can have an adhesive to upwardly adhere the light shield plate SS. Before the reflective layer REF and the light shield plate SS are adhered, the fitting portion RA or the light shield plate SS can be provided with a predetermined shape by means of embossing or stamping technology to improve the adhesion efficiency. For example, the fitting portion RA can be black, and the portion of the reflective layer REF other than the fitting portion RA thereof can be white, but the present application is not limited thereto.

[0078] Please refer to FIG. 10A-10B , FIG. 10A for a top view of a specific function key KS-1 of a light emitting keyboard LKB and a backlight module BLM according to another embodiment of the present application, and FIG. 10B for a layered exploded view of the specific function key KS-1 and the backlight module BLM. In the present embodiment, the light emitting keyboard LKB can include the backlight module BLM and the specific function key KS-1. The specific function key KS-1 is located above the backlight module BLM. The backlight module BLM can provide the backlight function for the specific function key KS-1 in addition to providing the backlight function for the entire light emitting keyboard LKB. It is to be noted that in the light emitting keyboard LKB of the present embodiment, the specific function key KS-1 can include the aforementioned bottom plate SUP, which can be disposed above the backlight module BLM and below the key circuit board MEM. However, in compliance with the present embodiment, the bottom plate SUP is not specially designed and configured, so that in the present embodiment, the bottom plate SUP is omitted for the purpose of displaying the drawing simply and clearly. FIG. 10A-10B The bottom plate SUP is omitted for the purpose of displaying the drawing simply and clearly.

[0079] As FIG. 10A-10BAs shown, the backlight module BLM can include a lamp plate LCB, a light guide plate LGP, and a light shield plate SS. The light shield plate SS, the light guide plate LGP, and the lamp plate LCB are stacked from top to bottom. The lamp plate LCB can have a first light emitting unit LED-1. The first light emitting unit LED-1 is, for example, a light emitting diode. In the present embodiment, the first light emitting unit LED-1 is a side-emitting light emitting diode to emit light toward the side edge S1 of the keycap projection area KCCP-1 of the specific function key KS-1. The first light emitting unit LED-1 can be used to provide the general backlight function of the light emitting keyboard LKB as a whole, and thus the number thereof can be multiple. The specific function key KS-1 can include a key circuit board MEM. As shown in the foregoing embodiments, FIG. 7A-7B and FIG. 8A-8B The difference between the present embodiment and the foregoing embodiments is that, in the present embodiment, the key circuit board MEM can have a second light emitting unit LED-2, i.e., the second light emitting unit LED-2 is not provided on the lamp plate LCB. The second light emitting unit LED-2 can be provided on the upper surface of the key circuit board MEM, i.e., in a different layer of the light emitting keyboard LKB from the first light emitting unit LED-1. The second light emitting unit LED-2 is, for example, a light emitting diode. In the present embodiment, the second light emitting unit LED-2 is a side-emitting light emitting diode. The second light emitting unit LED-2 is used to provide the exclusive backlight function of the individual key of the specific function key KS-1, and thus the number thereof depends on the number of the specific function key KS-1. Regarding the light emitting configuration of the lamp plate LCB, the first light emitting unit LED-1 and the second light emitting unit LED-2 can be configured to emit light simultaneously or at different times. In addition, in the present embodiment, the light color of the first light emitting unit LED-1 and the light color of the second light emitting unit LED-2 can be configured to be different, so that the exclusive backlight of the specific function key KS-1 is different from the general backlight of other keys. The first light emitting unit LED-1 and the second light emitting unit LED-2 are both adjacent to the side edge S2 of the keycap projection area KCCP-1 of the specific function key KS-1. In the top view in the stacking direction (vertical direction), the first light emitting unit LED-1 and the second light emitting unit LED-2 are configured side by side and emit light toward the same direction, i.e., toward the side edge S1.

[0080] As FIG. 10A-10BAs shown, the light guide plate LGP has a first light guide hole L0-1. A first light-emitting unit LED-1 can be located in the first light guide hole L0-1. The top and / or bottom surfaces of the light guide plate LGP near the first light guide hole L0-1 may have adhesive surrounding the first light guide hole L0-1 to respectively adhere the light shield SS and / or the lamp plate LCB. Since the first light guide hole L0-1 is aligned with the first light-emitting unit LED-1, the first light guide hole L0-1 is also adjacent to the same side S2 of the keycap projection area KCCP-1 of the specific function key KS-1. The light guide plate LGP also has a light guide groove LS. The light guide groove LS has an inverted U-shaped shape. The light guide groove LS is arranged around one of the first light-emitting units LED-1 and the second light-emitting unit LED-2. In the stacking direction (longitudinal), the light guide groove LS overlaps with the boundary projection of the keycap projection area KCCP-1 of the specific function key KS-1. Specifically, the light guide plate groove LS overlaps with one of the aforementioned two sides and the other two opposite sides of the keycap projection area KCCP-1, and these other two opposite sides are connected to one of the aforementioned two opposite sides. In this embodiment, the light guide plate groove LS overlaps with side S1 and side S3 and side S4 of the keycap projection area KCCP-1, and has no projection overlap with side S2 adjacent to the first light-emitting unit LED-1 and the second light-emitting unit LED-2, wherein side S3 and side S4 are adjacent sides connected to side S1 and side S2.

[0081] like FIG. 10A-10BAs shown, the light-shielding plate SS may have a shielding portion MP and a light-transmitting portion TP. The shielding portion MP and the light-transmitting portion TP can be stacked in various ways to form the light-shielding plate SS. The shielding portion MP is opaque, while the light-transmitting portion TP may simultaneously have reflective and semi-transparent properties; that is, the light-transmitting portion TP can reflect some light while allowing some light to pass through. For example, the shielding portion MP may be black paint, and the light-transmitting portion TP may be white paint, but this is not a limitation. In this embodiment, the shielding portion MP includes an outer frame portion MP-1, which surrounds the light-transmitting portion TP. The shielding portion MP overlaps with the projection of the first light-emitting unit LED-1. Specifically, in the stacking direction (longitudinal), the outer frame portion MP-1 overlaps with the projection of the first light-emitting unit LED-1. The shielding portion MP serves as a means of adjusting the amount of light emitted by the first light-emitting unit LED-1 toward the specific function button KS-1. The light guide plate groove LS is shielded by the shielding portion MP. That is, the light guide plate groove LS overlaps with the projection of the shielding portion MP. Specifically, the light guide plate groove LS overlaps with the projection of the outer frame portion MP-1. The light guide plate groove LS is arranged around the light-transmitting portion TP, meaning it does not overlap with the projection of the light-transmitting portion TP. The second light-emitting unit LED-2 overlaps with the projection of the light-transmitting portion TP, meaning that in a top view in the stacking direction (longitudinal), the second light-emitting unit LED-2 is located within the range of the light-transmitting portion TP. Furthermore, in a top view in the stacking direction (longitudinal), the second light-emitting unit LED-2 also partially overlaps with the projection of the shielding portion MP.

[0082] Furthermore, such as FIG. 10A-10B As shown, the backlight module BLM may also include a reflective layer REF. The reflective layer REF may be disposed between the light guide plate LGP and the lamp plate LCB. The reflective layer REF corresponds to the first light-emitting unit LED-1 and has a first reflective layer hole RH-1. The first light-emitting unit LED-1 may be located in the first reflective layer hole RH-1. The first light guide hole L0-1 and the first reflective layer hole RH-1 are aligned vertically. Thus, the first light-emitting unit LED-1 can pass through both the first light guide hole L0-1 and the first reflective layer hole RH-1 simultaneously. The reflective layer REF may also have a bonding portion RA. The bonding portion RA corresponds to the shape of the light guide plate groove LS, forming an inverted U-shape. The reflective layer REF can pass upward through its bonding portion RA through the light guide plate groove LS and join with the lower surface of the light shield SS to cover the edge of the light guide plate groove LS of the light guide plate LGP, thereby providing an effect of preventing light leakage. Specifically, the bonding portion RA may have adhesive to adhere the light shield SS upward. Before bonding the reflective layer REF to the light-shielding plate SS, embossing or debossing techniques can be used to give the bonding portion RA or the light-shielding plate SS a preset shape to improve bonding efficiency. For example, the bonding portion RA can be painted black, while the portion of the reflective layer REF other than the bonding portion RA can be painted white, but this is not a limitation.

[0083] The above embodiments of the special function key KS-1 correspond to the layout in the lighted keyboard LKB. As shown in FIG. 7B , FIG. 8B , FIG. 9B and FIG. 10B , the special function key KS-1 and its two adjacent keys can be aligned (or said to correspond to) with three keys in the adjacent row. The three keys in the adjacent row of the special function key KS-1 can be designed as the heat dissipation keys KS described above. Further, the three keys in the adjacent row of the special function key KS-1 can be, for example, the heat dissipation keys KS in the middle row ROW2 in the special layout shown in FIG. 5 . That is, since the special function key KS-1 and its two adjacent keys are aligned with three keys in the adjacent row, the three keys in the adjacent row of the special function key KS-1 can be the heat dissipation keys KS in the middle row ROW2, so it should be understood that the special function key KS-1 can be misaligned by 1 / 2 key center with the heat dissipation key KS in the upper row ROW1 shown in FIG. 5 . Thus, in the embodiment shown in FIG. 7A-7B and the embodiment shown in FIG. 9A-9B , the first light emitting unit LED-1 and the second light emitting unit LED-2 can be disposed between the left through channel PC-L and the right through channel PC-R of the aligned heat dissipation key KS in the middle row ROW2; and in the embodiment shown in FIG. 7A-7B and the embodiment shown in FIG. 9A-9B , the first light emitting unit LED-1 and the second light emitting unit LED-2 can be disposed between the right through channel PC-R of the heat dissipation key KS in the upper row ROW1 and the left through channel PC-L of another heat dissipation key KS in the adjacent upper row ROW1. In addition, in the embodiment shown in FIG. 8A-8B and the embodiment shown in FIG. 10A-10B , the first light emitting unit LED-1 and the second light emitting unit LED-2 can be respectively at least partially overlapped in the X direction (shown in FIG. 5 ) between the left through channel PC-L and the right through channel PC-R of the aligned heat dissipation key KS in the middle row ROW2; and in the embodiment shown in FIG. 8A-8B and the embodiment shown in FIG. 10A-10B , the first light emitting unit LED-1 and the second light emitting unit LED-2 can be respectively at least partially overlapped in the X direction (shown in FIG. 5 ) between the right through channel PC-R of the heat dissipation key KS in the upper row ROW1 and the left through channel PC-L of another heat dissipation key KS in the adjacent upper row ROW1.

[0084] Next, the operation mechanism of the computing device in response to each embodiment of the specific function key KS-1 is described. Please refer to FIG. 11A-11C , FIG. 11A the first state diagram of the light-emitting keyboard LKB in response to the operation mechanism of the computing device, FIG. 11B the second state diagram of the light-emitting keyboard LKB in response to the operation mechanism of the computing device, and FIG. 11C the third state diagram of the light-emitting keyboard LKB in response to the operation mechanism of the computing device.

[0085] As shown in FIG. 11A , in the first state, when the specific function (such as artificial intelligence auxiliary function) of the computing device is not started, the computing unit of the computing device can control the first light-emitting unit LED-1 in the light-emitting keyboard LKB to emit light and control the second light-emitting unit LED-2 under the specific function key KS-1 not to emit light, wherein the dot effect shown in the figure represents light emission. At this time, the light-emitting keyboard LKB provides a normal backlight function in the first state, the corresponding computing unit of the computing device in the first state is in the first performance, the memory of the computing device is also in the first usage, and the fan of the computing device is also in the first speed or even not running.

[0086] As shown in FIG. 11B , in the second state, when the specific function (such as artificial intelligence auxiliary function) of the computing device is started (that is, the specific function key KS-1 is pressed), the computing unit of the computing device can control the second light-emitting unit LED-2 under the specific function key KS-1 to emit light and control the first light-emitting unit LED-1 in the light-emitting keyboard LKB not to emit light, wherein the dot effect shown in the figure represents light emission. At this time, the light-emitting keyboard LKB provides a specific function key KS-1 exclusive backlight function in the second state, the corresponding computing unit of the computing device in the second state is in the second performance higher than the first performance, the memory of the computing device is also in the second usage higher than the first usage, and the fan of the computing device is also in the second speed higher than the first speed. Due to the arrangement of the heat dissipation keys KS adjacent to the specific function key KS-1 and the like, the heat dissipation of the computing unit, fan and the like of the computing device is facilitated.

[0087] As shown in FIG. 11CAs shown, in the third state, the second light-emitting unit LED-2 under the specific function key KS-1 and the first light-emitting unit LED-1 in the light-emitting keyboard LKB are also controlled to emit light when the specific function of the computing device, such as the artificial intelligence auxiliary function, is activated (i.e., the specific function key KS-1 is pressed). The dot effect shown in the figure represents the light emission. At this time, the light-emitting keyboard LKB provides the general backlight function in the third state and the exclusive backlight function of the specific function key KS-1. The computing unit of the computing device in the third state is in the third performance which is higher than the second performance. The memory of the computing device is in the third usage rate which is higher than the second usage rate. The fan of the computing device is in the third rotation speed which is higher than the second rotation speed.

[0088] Please refer to FIG. 12 which is a system connection architecture diagram of the light-emitting keyboard LKB and its specific function key KS-1 and the computing device.

[0089] As shown, FIG. 12 the computing device 10 can include an interface processor 11, a storage medium 12, a fan 13, a memory 14, and a computing unit 15. The interface processor 11, the storage medium 12, the fan 13, the memory 14, and the computing unit 15 can be connected by a bus BUS. The light-emitting keyboard LKB can be connected to the computing device 10 through the interface processor 11. When the specific function key KS-1 of the light-emitting keyboard LKB is pressed, the artificial intelligence auxiliary function of the computing device 10 can be activated accordingly, so that the computing performance is improved. When the computing performance of the computing device 10 is improved, the performance of the computing unit 15, the usage rate of the memory 14, and the rotation speed of the fan 13 are all improved. When the computing device 10 is externally connected with a graphics processing unit (GPU) or a network communication unit, or performs cloud computing, it can be considered as an additional computing unit that improves the computing performance of the computing device 10. The software suitable for the accelerated computing of artificial intelligence can be installed and operated in the computing device 10 or the cloud.

[0090] In summary, the backlight module for the specific function key on the light-emitting keyboard is designed in the embodiments. When the specific function of the computing device is activated, the color of the light under the specific function key can be displayed, so that the user can easily know that the specific function is in the activated state. Therefore, the configuration of the corresponding embedded keyboard module can be provided according to the specific function of the computing device.

[0091] The above description is only the preferred embodiment of the present application, and any equivalent changes and modifications made within the scope of the patent application of the present application shall be included in the scope of the present application.

Claims

1. A backlight module for an illuminated keyboard, the illuminated keyboard including specific function keys, characterized in that, The backlight module includes: A light panel having a first light-emitting unit and a second light-emitting unit; A light guide plate having a first light guide hole and a second light guide hole, wherein a first light-emitting unit is located in the first light guide hole and a second light-emitting unit is located in the second light guide hole; and A light-shielding plate having a shielding portion, wherein the light-shielding plate, the light guide plate, and the lamp plate are stacked from top to bottom, and the shielding portion overlaps with the projection of the first light-emitting unit and the second light-emitting unit; The light guide plate also has a light guide plate groove, which overlaps with the boundary projection of the shielding part and the keycap projection area of ​​the specific function key.

2. The backlight module for a backlit keyboard according to claim 1, characterized in that, The backlight module also includes: A reflective layer is disposed between the light guide plate and the lamp plate and has a first reflective layer hole, a second reflective layer hole, and an adhesive portion; The first light guide hole is aligned vertically with the first reflective layer hole, the second light guide hole is aligned vertically with the second reflective layer hole, the light guide plate groove is aligned vertically with the bonding portion, the first light-emitting unit is located in the first reflective layer hole, the second light-emitting unit is located in the second reflective layer hole, and the bonding portion overlaps with the boundary projection of the shielding portion and the keycap projection area.

3. The backlight module for a backlit keyboard according to claim 1, characterized in that, The first light-emitting unit and the second light-emitting unit are respectively located near two opposite sides of the keycap projection area.

4. The backlight module for a backlit keyboard according to claim 3, characterized in that, The light guide plate groove overlaps with one of the two opposite sides and the other two opposite sides of the keycap projection area, and the other two opposite sides are connected to one of the two opposite sides.

5. The backlight module for a backlit keyboard according to claim 1, characterized in that, The light-shielding plate has a light-transmitting portion, which includes an outer frame portion and an inner block portion. The outer frame portion surrounds the light-transmitting portion, and the inner block portion is located within the area of ​​the light-transmitting portion.

6. The backlight module for a backlit keyboard according to claim 5, characterized in that, The first light-emitting unit overlaps with the projection of the outer frame portion, and the second light-emitting unit overlaps with the projection of the inner block portion.

7. The backlight module for a backlit keyboard according to claim 5, characterized in that, The light guide plate groove overlaps with the projection of the outer frame portion, but the light guide plate groove does not overlap with the projection of the inner block portion.

8. The backlight module for a backlit keyboard according to claim 1, characterized in that, The first light-emitting unit and the second light-emitting unit are located adjacent to one side of the keycap projection area.

9. The backlight module for a backlit keyboard according to claim 8, characterized in that, The groove of the light guide plate does not overlap with the side projection.

10. The backlight module for a backlit keyboard according to claim 8, characterized in that, The light-shielding plate has a light-transmitting portion, and the shielding portion includes an outer frame portion that surrounds the light-transmitting portion. The outer frame portion overlaps with the projection of the first light-emitting unit and the second light-emitting unit.

11. The backlight module for a backlit keyboard according to claim 10, characterized in that, The groove of the light guide plate overlaps with the projection of the outer frame.

12. The backlight module for a backlit keyboard according to claim 10, characterized in that, The color of light emitted by the first light-emitting unit is different from that of the second light-emitting unit.

13. A backlit keyboard, characterized in that, include: The backlight module, the back panel module includes: A light panel having a first light-emitting unit; A light guide plate having a first light guide hole, wherein the first light-emitting unit is located in the first light guide hole; and A light-shielding plate having a shielding portion, wherein the light-shielding plate, the light guide plate, and the lamp plate are stacked from top to bottom, and the shielding portion overlaps with the projection of the first light-emitting unit; and A specific function button is located above the backlight module and includes a button circuit board, wherein the button circuit board has a second light-emitting unit; The light guide plate also has a light guide plate groove, which overlaps with the boundary projection of the shielding part and the keycap projection area of ​​the specific function key.

14. The illuminated keyboard according to claim 13, characterized in that, The backlight module also includes: A reflective layer is disposed between the light guide plate and the lamp plate and has a first reflective layer hole and an adhesive portion; The first light guide hole is aligned vertically with the first reflective layer hole, the light guide plate groove is aligned vertically with the bonding portion, the first light-emitting unit is located in the first reflective layer hole, and the bonding portion overlaps with the boundary projection of the shielding portion and the keycap projection area.

15. The illuminated keyboard according to claim 13, characterized in that, The first light-emitting unit and the second light-emitting unit are respectively located near two opposite sides of the keycap projection area.

16. The illuminated keyboard according to claim 15, characterized in that, The light-shielding plate has a light-transmitting portion, and the shielding portion includes an outer frame portion that surrounds the light-transmitting portion. The outer frame portion overlaps with the projection of the first light-emitting unit, and the light-transmitting portion overlaps with the projection of the second light-emitting unit.

17. The illuminated keyboard according to claim 15, characterized in that, The light guide plate groove overlaps with one of the two opposite sides and the projection of the other two opposite sides of the keycap projection area, and the other two opposite sides are connected to one of the two opposite sides.

18. The illuminated keyboard according to claim 13, characterized in that, The first light-emitting unit and the second light-emitting unit are located adjacent to one side of the keycap projection area.

19. The illuminated keyboard according to claim 18, characterized in that, The light-shielding plate has a light-transmitting portion, and the shielding portion includes an outer frame portion that surrounds the light-transmitting portion. The outer frame portion overlaps with the projection of the first light-emitting unit and the second light-emitting unit.

20. The illuminated keyboard according to claim 19, characterized in that, The groove of the light guide plate does not overlap with the side projection.

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