Backlight module and luminous keyboard
By employing a multi-layered optical layer and mesh structure in the backlit keyboard, the problem of dust and moisture ingress is solved, achieving waterproof and dustproof effects without affecting optical performance and appearance, while maintaining heat dissipation function.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-29
- Publication Date
- 2026-05-19
AI Technical Summary
The holes in existing backlit keyboards allow external dust, moisture, and other impurities to enter, affecting the operation of the internal system. Furthermore, they cannot effectively prevent water and dust from entering without affecting the optical effect or aesthetics.
The backlight module design includes a first optical layer, a second optical layer, and a third optical layer, combined with a mesh covering channel. The mesh is set between the optical layers or on the circuit layer and has multiple pores to block impurities and maintain heat dissipation and optical effect.
It effectively prevents dust and moisture from entering, while maintaining the keyboard's optical appearance and aesthetics, and ensuring that the function of the heat dissipation channels is not affected.
Smart Images
Figure CN224263997U_ABST
Abstract
Description
Technical Field
[0001] This application relates to a backlight module and an illuminated keyboard, and more particularly to a backlight module and an illuminated keyboard with a mesh. Background Technology
[0002] In order to enable users to clearly see the symbols on each key of the keyboard in low-light environments, light source technology is introduced under the keys, thus developing backlit keyboards with backlight modules to facilitate user operation.
[0003] During daily use of keyboards, the holes in backlit keyboards allow external dust, moisture, or other impurities to enter the keyboard, affecting the operation of other systems located at the bottom of the backlit keyboard. Therefore, how to provide a backlight module and backlit keyboard that improves waterproof and dustproof performance without affecting the optical effect or aesthetics of the backlight module and backlit keyboard is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0004] This application provides a backlight module and an illuminated keyboard, which can improve the waterproof and dustproof effect without affecting the optical effect or aesthetics of the backlight module and the illuminated keyboard.
[0005] To solve the above-mentioned technical problems, this application is implemented as follows:
[0006] This application provides a backlight module, which includes: a light-emitting component and a mesh; wherein the light-emitting component has at least one first channel, and the light-emitting component includes: a first optical layer, a second optical layer and a third optical layer, the first optical layer and the third optical layer are disposed on opposite sides of the second optical layer, and the at least one first channel passes through the first optical layer, the second optical layer and the third optical layer; the mesh is disposed corresponding to the at least one first channel.
[0007] Preferably, the first optical layer is a light-shielding sheet, the second optical layer is a light guide sheet, and the third optical layer is a reflective sheet.
[0008] Preferably, the mesh is disposed on the side of the first optical layer away from the second optical layer.
[0009] Preferably, the mesh covers a portion of the first optical layer and shields the at least one first channel.
[0010] Preferably, the mesh is disposed between the first optical layer and the third optical layer.
[0011] Preferably, the mesh and the second optical layer are of the same structure.
[0012] Preferably, the second optical layer has a receiving hole that extends through the thickness direction, and the mesh is disposed in the receiving hole, which is connected to the at least one first channel.
[0013] Preferably, the mesh is disposed on the side of the third optical layer away from the second optical layer.
[0014] Preferably, the mesh at least partially covers the third optical layer and obscures the at least one first channel.
[0015] Preferably, the mesh completely covers the third optical layer and obscures the at least one first channel.
[0016] Preferably, the first optical layer has at least one first through hole, the second optical layer has at least one second through hole, and the third optical layer has at least one third through hole, wherein the at least one first through hole, the at least one second through hole, and the at least one third through hole correspond to each other to form the at least one first channel.
[0017] Preferably, the mesh is provided with a plurality of pores, the plurality of pores corresponding to the at least one first channel, and the diameter of each pore in one direction is smaller than the diameter of the at least one first channel in that direction.
[0018] This application also provides an illuminated keyboard, comprising: a backlight module and a key module of this application; wherein, the key module has at least one second channel corresponding to at least one first channel of the light-emitting component of the backlight module, the key module includes a plurality of key units, a base plate and a circuit layer; the base plate is disposed on one side of the backlight module and away from the third optical layer; the circuit layer is disposed on the side of the base plate away from the backlight module; the plurality of key units are disposed on the side of the circuit layer away from the base plate, and the plurality of key units are spaced apart; the at least one second channel penetrates the base plate and the circuit layer, and the at least one second channel is exposed between adjacent key units and / or located within the orthogonal projection range of a key unit on the circuit layer.
[0019] Preferably, the surfaces of the mesh and circuit layers furthest from the base plate are set to the same color.
[0020] This application also provides another backlit keyboard, comprising: a light-emitting component, a key module, and a mesh; wherein, the light-emitting component has at least one first channel, and the light-emitting component includes: a first optical layer, a second optical layer, and a third optical layer, the first optical layer and the third optical layer being disposed on opposite sides of the second optical layer, and the at least one first channel penetrating the first optical layer, the second optical layer, and the third optical layer; the key module has at least one second channel corresponding to the at least one first channel of the light-emitting component, and the key module includes multiple key units, a base plate, and a circuit layer; the base plate is disposed on one side of the light-emitting component and away from the third optical layer; the circuit layer is disposed on the side of the base plate away from the backlight module; the multiple key units are disposed on the side of the circuit layer away from the base plate, and the multiple key units are spaced apart; the at least one second channel penetrates the base plate and the circuit layer, and the at least one second channel is exposed between adjacent key units; the mesh is disposed on the side of the circuit layer away from the base plate and is disposed corresponding to the at least one second channel of the key module.
[0021] Preferably, the mesh is provided with a plurality of pores, the plurality of pores corresponding to the at least one first channel, and the diameter of each pore in one direction is smaller than the diameter of the at least one first channel in that direction.
[0022] Preferably, the surfaces of the mesh and circuit layers furthest from the base plate are set to the same color.
[0023] This application also provides another type of backlit keyboard, which includes: a base plate, multiple key units, a circuit layer, a light-emitting component, and a mesh; wherein, the base plate has a first side and a second side opposite to each other; the multiple key units are disposed on the first side, and there is a gap between adjacent two key units; the circuit layer is disposed between the base plate and the multiple key units; the light-emitting component is disposed on the second side, and the light-emitting component has a first channel; the mesh is correspondingly disposed in the first channel or gap, and the surfaces of the mesh and the circuit layer are set to the same color.
[0024] Preferably, the mesh has multiple pores and is light-transmitting.
[0025] Preferably, the base plate has a first perforation, the circuit layer has a second perforation, the first perforation and the second perforation are spaced apart, and the mesh is disposed on the first side, covering the second perforation.
[0026] Preferably, the base plate has a first perforation, the circuit layer has a second perforation, and the first perforation and the second perforation are spaced apart; the mesh is disposed on the second side, covering the first channel of the light-emitting component, or located between the first channel and the first perforation.
[0027] Preferably, the illuminated keyboard has a long side direction, and the first channel extends along the long side direction for any two adjacent key units.
[0028] Preferably, the illuminated keyboard has two opposing short sides, and the first channel of the light-emitting component is correspondingly disposed on the two short sides.
[0029] In the backlight module and illuminated keyboard of this application embodiment, the mesh improves the waterproof and dustproof effect without affecting the optical effect or aesthetics of the backlight module and illuminated keyboard. Furthermore, when the surfaces of the mesh and circuit layer away from the base plate are set to the same color and the second channel is exposed between adjacent key units, the mesh is positioned on the side of the first optical layer away from the second optical layer, between the first and third optical layers, or on the side of the circuit layer away from the base plate. Compared to the mesh being positioned on the side of the third optical layer away from the second optical layer, the relative distance along the thickness direction between the circuit layer and the mesh is smaller (the depth difference between the circuit layer and the mesh is smaller), resulting in less color difference when the user views the illuminated keyboard from above. In addition, the mesh design with multiple pores allows the first channel to maintain its heat dissipation / sound transmission function while effectively blocking external dust, moisture, or other impurities. Attached Figure Description
[0030] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0031] Figure 1 A schematic diagram of the appearance of a laptop computer using the backlit keyboard of this application;
[0032] Figure 2 for Figure 1 An exploded view of an embodiment of an illuminated keyboard;
[0033] Figure 3 for Figure 2 A top view of the illuminated keyboard;
[0034] Figure 4 For along Figure 3 A cross-sectional view of line segment AA';
[0035] Figure 5 for Figure 2 A magnified view of region I of the light-emitting component;
[0036] Figure 6 This is an exploded view of an embodiment of the illuminated keyboard of this application;
[0037] Figure 7 This is an exploded view of an embodiment of the illuminated keyboard of this application;
[0038] Figure 8 for Figure 7 A magnified view of region B of the first optical layer;
[0039] Figure 9 for Figure 7 A magnified view of region C of the third optical layer;
[0040] Figure 10 for Figure 7 A top view of the illuminated keyboard;
[0041] Figure 11 For along Figure 10 A cross-sectional view of line segment DD';
[0042] Figure 12 for Figure 7 An enlarged view of region E of the circuit layer;
[0043] Figure 13 for Figure 7 An enlarged view of region F of the base plate;
[0044] Figure 14 This is an exploded view of yet another embodiment of the illuminated keyboard of this application;
[0045] Figure 15 for Figure 14 A top view of the illuminated keyboard;
[0046] Figure 16 For along Figure 15 A cross-sectional view of line segment GG';
[0047] Figure 17 This is an exploded view of yet another embodiment of the illuminated keyboard of this application;
[0048] Figure 18 for Figure 17 A top view of the backlit keyboard; and
[0049] Figure 19 For along Figure 18 A cross-sectional view of line segment HH'. Detailed Implementation
[0050] The embodiments of this utility model will be described below with reference to the accompanying drawings. Directional terms used in the following embodiments, such as up, down, left, right, front, and back, are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present utility model. In these drawings, the same reference numerals denote the same or similar elements or method flows.
[0051] It must be understood that the use of terms such as "comprising" or "including" in this specification is intended to indicate the presence of specific technical features, values, method steps, work processes and / or components, but does not preclude the addition of more technical features, values, method steps, work processes, components, or any combination thereof.
[0052] It is important to understand that when a component is described as "connected" or "coupled" to another component, it can be a direct connection or coupling to another component, and intermediate components may be involved. Conversely, when a component is described as "directly connected" or "directly coupled" to another component, there are no intermediate components.
[0053] Please see Figure 1 This is a schematic diagram of the appearance of a laptop computer using the backlit keyboard of this application. Figure 1 As shown, the backlit keyboard 100 can be applied to a laptop computer 10, wherein the backlit keyboard 100 and the processor (not shown) of the laptop computer 10 can communicate with each other via the bus or the wire, but this embodiment is not intended to limit the present application. For example, the backlit keyboard 100 can be a stand-alone input device and can be connected to an electronic device (e.g., a computer host) in a wired or wireless manner.
[0054] Please see Figures 2 to 4 , Figure 2 for Figure 1 An exploded view of an embodiment of an illuminated keyboard. Figure 3 for Figure 2 A top view of the backlit keyboard. Figure 4 For along Figure 3 A cross-sectional view of line segment AA'. (See diagram below.) Figures 2 to 4 As shown, the backlit keyboard 100 includes: a light-emitting component 112, a key module 120, and a mesh 114. In one embodiment, the light-emitting component 112 and the mesh 114 may be integrated together (i.e., the backlight module 110 may include the light-emitting component 112 and the mesh 114).
[0055] In this embodiment, the light-emitting component 112 includes: a first optical layer 1122, a second optical layer 1124, and a third optical layer 1126, wherein the first optical layer 1122 and the third optical layer 1126 are disposed on opposite sides of the second optical layer 1124 (e.g., Figure 4(As shown). The first optical layer 1122 can be, but is not limited to, a light-shielding sheet; the second optical layer 1124 can be, but is not limited to, a light guide sheet; and the third optical layer 1126 can be, but is not limited to, a reflective sheet. In one embodiment, the thickness of the second optical layer 1124 can be greater than the thickness of the first optical layer 1122 or the thickness of the third optical layer 1126, and the thickness of the mesh 114 can be greater than or equal to the thickness of the second optical layer 1124 or the thickness of the third optical layer 1126. For example, the thickness of the mesh 114 can be from 0.025 mm to 0.05 mm, the thicknesses of the first optical layer 1122 and the third optical layer 1126 can be from 0.02 mm to 0.035 mm respectively, and the thickness of the second optical layer 1124 can be from 0.1 mm to 0.2 mm.
[0056] Please see Figure 2 and Figure 5 , Figure 5 for Figure 2 A magnified view of region I of the light-emitting component. (See image below.) Figure 2 and Figure 5 As shown, the light-emitting component 112 may also include multiple light sources 12 and a circuit board (not shown). The light sources 12 may be, but are not limited to, light-emitting diodes (LEDs). The first optical layer 1122, the second optical layer 1124, and the third optical layer 1126 guide the light emitted by the multiple light sources 12 to the multiple button units 122 of the button module 120 to form light emission. The circuit board connects to the multiple light sources 12 and controls the multiple light sources 12 to emit light. It should be noted that the circuit board is not shown because it is located on the side of the third optical layer 1126 away from the second optical layer 1124. Figure 2 and Figure 5 In another embodiment (not shown), the backlight module 110 may further include a circuit board with multiple light sources 12, the multiple light sources 12 being configured to correspond to multiple key units 122 of the key module 120 or to be configured in the area of the backlight keyboard 100 where light needs to be emitted.
[0057] Furthermore, the light-emitting component 112 has at least one first channel 50, which penetrates the first optical layer 1122, the second optical layer 1124, and the third optical layer 1126 (e.g., Figure 2 and Figure 4As shown), the number of first channels 50 can be multiple, and the first channels 50 can serve as heat dissipation channels for the light-emitting component 112. Specifically, the first optical layer 1122 may have at least one first through hole 51, the third optical layer 1126 may have at least one second through hole 52, and the second optical layer 1124 may have at least one third through hole 53. At least one first through hole 51, at least one second through hole 52, and at least one third through hole 53 correspond to each other to form at least one first channel 50 of the light-emitting component 112 (e.g., ...). Figure 4 (As shown). The number of first channels 50, first through holes 51, second through holes 52 and third through holes 53 can be the same, and the first through holes 51, second through holes 52 and third through holes 53 can form a first channel 50 through a one-to-one correspondence.
[0058] The button module 120 has at least one second channel 60 corresponding to at least one first channel 50. The button module 120 includes multiple button units 122, a base plate 124, and a circuit layer 126. The at least one second channel 60 penetrates the base plate 124 and the circuit layer 126 (e.g., ...). Figure 4 As shown, a base plate 124 is disposed on one side of the light-emitting component 112 and away from the third optical layer 1126; a circuit layer 126 is disposed on the side of the base plate 124 away from the light-emitting component 112; a plurality of button units 122 are disposed on the side of the circuit layer 126 away from the base plate 124, and the plurality of button units 122 are spaced apart (i.e., there is a gap between adjacent button units 122); at least one second channel 60 penetrates the base plate 124 and the circuit layer 126, and at least one second channel 60 is exposed between adjacent button units 122. Each button unit 122 may include a keycap 1222 and a support frame (not shown), and the keycap 1222 and the base plate 124 are movably connected by the support frame. In one embodiment, the base plate 124 is disposed on one side of the backlight module 110, and the circuit layer 126 is disposed on the side of the base plate 124 away from the backlight module 110.
[0059] The number of first channels 50 and second channels 60 can be the same or different; the dimensions of first channels 50 and second channels 60 can be the same or different, as long as the second channels 60 and first channels 50 can correspond to each other (be connected). Specifically, the base plate 124 may have at least one first through hole 61, and the circuit layer 126 may have at least one second through hole 62. At least one first through hole 61 and at least one second through hole 62 correspond to each other to form at least one second channel 60 of the button module 120 (e.g., Figure 4 (As shown). The number of second channels 60, first perforations 61 and second perforations 62 can be the same, and the first perforations 61 and second perforations 62 can form a second channel 60 through a one-to-one correspondence.
[0060] In this embodiment, the second channel 60 may be exposed between adjacent button units 122 (e.g., Figure 3 (As shown), but this embodiment is not intended to limit the present application. For example, a portion of the second channel 60 may be exposed between two adjacent button units 122, another portion of the second channel 60 may be located within the orthographic projection range of the adjacent button unit 122 on the circuit layer 126, or the second channel 60 may be entirely located within the orthographic projection range of a button unit 122 on the circuit layer 126.
[0061] The mesh 114 is disposed corresponding to the at least one first channel 50 / the at least one second channel 60. In this embodiment, the mesh 114 is disposed on the side of the third optical layer 1126 away from the second optical layer 1124. The number of mesh 114 may be, but is not limited to, one, and it is disposed corresponding to the multiple first channels 50 disposed on the light-emitting component 112 / light-emitting keyboard 100 to improve the waterproof and dustproof effect. The mesh 114 may completely cover the third optical layer 1126 and cover the at least one first channel 50, but this embodiment is not intended to limit this application and can be adjusted according to actual needs. For example, the number of mesh 114 may be, but is not limited to, three, and the three meshes 114 may respectively at least partially cover the third optical layer 1126 and cover the at least one first channel 50 (e.g., Figure 6 As shown, Figure 6 (This is an exploded view of an embodiment of the illuminated keyboard of this application).
[0062] In one embodiment, the mesh 114 may be provided with a plurality of pores 70, each pore 70 corresponding to the at least one first channel 50, wherein the diameter of each pore 70 in direction J is smaller than the diameter of the at least one first channel 50 in direction J. The pore diameter of the pores 70 may be, but is not limited to, 18 micrometers (μm) to 285 μm. Through the design of the pores 70, the first channel 50, serving as a heat dissipation channel, can still maintain its heat dissipation function while effectively blocking external dust, moisture, or other impurities.
[0063] In one embodiment, the surfaces of the diaphragm 114 and the circuit layer 126 away from the base plate 124 are set to the same color. The color of the surfaces of the diaphragm 114 and the circuit layer 126 away from the base plate 124 can be an opaque color such as black or gray. For example, a ridge-like ink layer composed of opaque ink can be formed around the circuit layer 126 along the projected outline of each button unit 122 on the circuit layer 126. Furthermore, the main characteristics of the diaphragm 114 may include, but are not limited to, a flat frequency response for the widest possible range of applications, effective protection against dust, metal particles, and liquids, strict airflow control, and / or low moisture absorption due to the use of polyester polymers. Additionally, the thickness of the diaphragm 114 can be, but is not limited to, 45 μm to 255 μm.
[0064] Please see Figures 7 to 11 , Figure 7 This is an exploded view of one embodiment of the illuminated keyboard of this application. Figure 8 for Figure 7 A magnified view of region B of the first optical layer. Figure 9 for Figure 7 A magnified view of region C of the third optical layer. Figure 10 for Figure 7 A top view of the backlit keyboard. Figure 11 For along Figure 10 A cross-sectional view of line segment DD'. (See diagram below.) Figures 7 to 11 As shown, the backlit keyboard 200 includes: multiple key units 222, a base plate 224, a circuit layer 226, a light-emitting component 212, and a mesh 214. In one embodiment, the light-emitting component 212 and the mesh 214 may be integrated together (i.e., the backlight module 210 may include: the light-emitting component 212 and the mesh 214), and the multiple key units 222, the base plate 224, and the circuit layer 226 may be integrated together (i.e., the key module 220 includes multiple key units 222, the base plate 224, and the circuit layer 226).
[0065] The base plate 224 has a first side 224a and a second side 224b that are opposite to each other; a plurality of button units 222 are disposed on the first side 224a, wherein there is a gap between two adjacent button units 222; and a circuit layer 226 is disposed between the base plate 224 and the plurality of button units 222.
[0066] The light-emitting component 212 is disposed on the second side 224b. The light-emitting component 212 includes a first optical layer 2122, a second optical layer 2124, and a third optical layer 2126. The first optical layer 2122 and the third optical layer 2126 are disposed on opposite sides of the second optical layer 2124. The first optical layer 2122 may be, but is not limited to, a light-shielding sheet; the second optical layer 2124 may be, but is not limited to, a light guide sheet; and the third optical layer 2126 may be, but is not limited to, a reflective sheet. In one embodiment, the thickness of the second optical layer 2124 may be greater than the thickness of the first optical layer 2122 or greater than the thickness of the third optical layer 2126, and the thickness of the mesh 214 may be greater than or equal to the thickness of the second optical layer 2124 or the thickness of the third optical layer 2126; for example, the thickness of the mesh 214 may be 0.025 mm to 0.05 mm, the thickness of the first optical layer 2122 and the thickness of the third optical layer 2126 may be 0.02 mm to 0.035 mm respectively, and the thickness of the second optical layer 2124 may be 0.1 mm to 0.2 mm.
[0067] Additionally, the backlit keyboard 200 may also include multiple light sources 22 and a circuit board 24. The multiple light sources 22 are disposed on the circuit board 24 and correspond to multiple holes in the light-emitting component 212 (the multiple holes penetrate the first optical layer 2122, the second optical layer 2124, and the third optical layer 2126). The first optical layer 2122, the second optical layer 2124, and the third optical layer 2126 guide the light emitted by the multiple light sources 22 to multiple key units 222 or areas of the backlit keyboard 200 that need to emit light to form light emission. The circuit board 24 may be, but is not limited to, a flexible circuit board. In one embodiment, the light-emitting component 212, the mesh 214, the multiple light sources 22, and the circuit board 24 may be integrated into a backlight module 210.
[0068] Furthermore, the light-emitting component 212 has at least one first channel 80, which penetrates the first optical layer 2122, the second optical layer 2124, and the third optical layer 2126 (e.g., Figure 10As shown), the number of first channels 80 can be multiple, and some of the first channels 80 can be disposed at both ends of the light-emitting component 212 / light-emitting keyboard 200 along the long side direction Y (i.e., the light-emitting keyboard 200 has a long side direction Y and two opposite short side sides 200a, 200b, and the first channel 80 can extend along the long side direction Y corresponding to any two adjacent key units 222, and the first channel 80 can be disposed on the two short side sides 200a, 200b respectively). The first channel 80 can serve as a heat dissipation channel for the light-emitting component 212. Specifically, the first optical layer 2122 can have at least one first through hole 81, the third optical layer 2126 can have at least one second through hole 82, and the second optical layer 2124 can have at least one third through hole 83. At least one first through hole 81, at least one second through hole 82, and at least one third through hole 83 correspond to each other to form at least one first channel 80 of the light-emitting component 212 (e.g., Figure 11 (As shown). The number of first channels 80, first through holes 81, second through holes 82, and third through holes 83 can be the same. The first through holes 81, second through holes 82, and third through holes 83 can form a first channel 80 through a one-to-one correspondence. The first through holes 81, second through holes 82, and third through holes 83 can be, but are not limited to, elongated holes. The area of the third through hole 83 can be larger than the area of the first through hole 81 or the area of the second through hole 82.
[0069] Please see Figure 7 , Figure 12 and Figure 13 , Figure 12 for Figure 7 An enlarged view of region E of the circuit layer. Figure 13 for Figure 7 An enlarged view of region F of the base plate. (See attached image.) Figure 7 , Figure 12 and Figure 13 As shown, multiple button units 222 are disposed on the side of the circuit layer 226 away from the base plate 224, and the multiple button units 222 are spaced apart (i.e., there is a gap between adjacent button units 222); the base plate 224 is disposed on one side of the light-emitting component 212 / backlight module 210, and away from the third optical layer 2126; the circuit layer 226 is disposed on the side of the base plate 224 away from the light-emitting component 212 / backlight module 210. Each button unit 222 may include a keycap 2222 and a support frame (not shown), and the keycap 2222 and the base plate 224 are movably connected by the support frame.
[0070] The button module 220 has at least one second channel 30 corresponding to at least one first channel 80 of the light-emitting component 212; the at least one second channel 30 penetrates the base plate 224 and the circuit layer 226 (e.g., Figure 11(As shown). The number of first channels 80 and second channels 30 can be the same; the dimensions of the first channels 80 and second channels 30 can be the same or different, as long as the second channel 30 and the first channel 80 correspond to each other (are connected). Specifically, the base plate 224 may have at least one first through hole 31, and the circuit layer 226 may have at least one second through hole 32. At least one first through hole 31 and at least one second through hole 32 correspond to each other to form at least one second channel 30 of the button module 220 (e.g., ...). Figure 11 (As shown). The number of second channels 30, first perforations 31 and second perforations 32 can be the same. The first perforations 31 and second perforations 32 can form a second channel 30 through a one-to-one correspondence. The first perforations 31 and second perforations 32 can be, but are not limited to, elongated holes.
[0071] In this embodiment, the second channel 30 may be exposed between adjacent button units 222 (i.e., the first through hole 31 and the second through hole 32 may be configured to correspond to the gap between two adjacent button units 222); specifically, a portion of the second channel 30 may be exposed between two adjacent button units 222, and another portion of the second channel 30 may be located within the orthographic projection range of the adjacent button units 222 on the circuit layer 226 (e.g., ...). Figure 7 and Figure 10 (As shown), but this embodiment is not intended to limit the present application. For example, the second channel 30 may be completely exposed between adjacent button units 222, or the second channel 30 may be entirely located within the orthographic projection range of a button unit 222 on the circuit layer 226.
[0072] The mesh 214 is disposed corresponding to at least one first channel 80. In this embodiment, the mesh 214 is disposed on the side of the first optical layer 2122 away from the second optical layer 2124 (i.e., the mesh 214 is disposed on the second side 224b) and covers the first channel 80, or is located between the first channel 80 and the first perforation 31 of the base plate 224. The number of meshes 214 may be, but is not limited to, two, and they are disposed corresponding to multiple first channels 80 at both ends of the light-emitting component 212 / light-emitting keyboard 200 along the long side direction Y to improve the waterproof and dustproof effect. In addition, the mesh 214 may cover part of the first optical layer 2122 and cover the corresponding first channel 80, but this embodiment is not intended to limit this application and can be adjusted according to actual needs. For example, the mesh 214 may completely cover the first optical layer 2122 and cover the corresponding first channel 80. Furthermore, the surfaces of the mesh 214 and the circuit layer 226 may be set to the same color.
[0073] exist Figures 7 to 13In this embodiment, since the reticle 214 is disposed on the side of the first optical layer 2122 away from the second optical layer 2124, and the surfaces of the reticle 214 and the circuit layer 226 can be set to the same color, relative to Figures 2 to 4 The reticle 214 is disposed on the side of the third optical layer 1126 away from the second optical layer 1124. The relative distance between the circuit layer 226 and the reticle 214 along the thickness direction Z is small, so that there is no color difference when the user looks down at the backlit keyboard 200, and the user is not likely to notice the presence of the second channel 30 / reticle 214. In one example, the color of the surface of the reticle 214 and the circuit layer 226 away from the base plate 224 can be an opaque color such as black or gray.
[0074] In one embodiment, the mesh 214 may be provided with a plurality of pores 71 and be translucent. Specifically, the plurality of pores 71 correspond to the at least one first channel 80, and the diameter of each pore 71 in the long side direction Y is smaller than the diameter of the at least one first channel 80 in the long side direction Y. The pore diameter of the pores 71 may be, but is not limited to, 18 μm to 285 μm. Through the design of the pores 71, the first channel 80, as a heat dissipation channel, can still maintain its heat dissipation function, and can also effectively block external dust, moisture, or other impurities. Furthermore, the main characteristics of the mesh 214 may include, but are not limited to, a flat frequency response over the widest possible range of applications, effective protection against dust, metal particles, and liquids, strict airflow control, and / or low hygroscopicity due to the use of polyester polymers. In addition, the thickness of the mesh 214 may be, but is not limited to, 45 μm to 255 μm.
[0075] Please see Figures 14 to 16 , Figure 14 This is an exploded view of yet another embodiment of the illuminated keyboard of this application. Figure 15 for Figure 14 A top view of the backlit keyboard. Figure 16 For along Figure 15 A cross-sectional view of line segment GG'. (See diagram below.) Figures 14 to 16 As shown, the main difference between the backlit keyboard 300 and the backlit keyboard 200 lies in the design of the light-emitting component 312 and the mesh 314; specifically, the mesh 314 of the backlit keyboard 300 is disposed between the first optical layer 3122 and the third optical layer 3126. In one embodiment, the backlight module 310 may include the light-emitting component 312, the mesh 314, a plurality of light sources 22, and a circuit board 24.
[0076] In one embodiment, without affecting the light-emitting function of the light-emitting component 312, the mesh 314 and the second optical layer 3124 can be of the same layer structure. For example, the second optical layer 3124 may have a receiving hole 40 extending through the thickness direction Z, and the mesh 314 may be disposed within the receiving hole 40 (e.g., Figure 14 and Figure 16 As shown, the accommodating hole 40 connects to at least one first channel 20. Specifically, the first through-hole 21 of the first optical layer 3122 is located within the projection range of the accommodating hole 40 on the first optical layer 3122, and the second through-hole 22 of the third optical layer 3126 is located within the projection range of the accommodating hole 40 on the third optical layer 3126. The first through-hole 21, the accommodating hole 40, and the second through-hole 22 correspond to each other to form the first channel 20. In other words, the area of the accommodating hole 40 can be larger than the area of the first through-hole 21 or the area of the second through-hole 22.
[0077] In addition, the thickness of the second optical layer 3124 may be greater than the thickness of the first optical layer 3122 or greater than the thickness of the third optical layer 3126, and the thickness of the mesh 314 may be greater than or equal to the thickness of the second optical layer 3124 or the thickness of the third optical layer 3126. The thickness of the mesh 314 may be, but is not limited to, 45 μm to 255 μm.
[0078] In one embodiment, the surfaces of the mesh 314 and the circuit layer 226 away from the base plate 224 are set to the same color. Figures 14 to 16 In the embodiment, since the retina 314 is disposed between the first optical layer 3122 and the third optical layer 3126, relative to Figures 2 to 4 The reticle 114 is located on the side of the third optical layer 1126 away from the second optical layer 1124. The relative distance between the circuit layer 226 and the reticle 314 along the thickness direction Z is small, so that when the user looks down at the backlit keyboard 300, there will be no color difference, and the user will not easily notice the existence of the second channel 30 / reticle 314.
[0079] In one embodiment, the mesh 314 may be provided with a plurality of pores 72, each pore 72 having a diameter in the longitudinal direction Y that is smaller than the diameter of the at least one first channel 20 in the longitudinal direction Y. The pore diameter of the pores 72 may be, but is not limited to, 18 μm to 285 μm. Through the design of the pores 72, the first channel 20, serving as a heat dissipation channel, can still maintain its heat dissipation function while effectively blocking external dust, moisture, or other impurities.
[0080] Please see Figures 17 to 19 , Figure 17 This is an exploded view of yet another embodiment of the illuminated keyboard of this application. Figure 18 for Figure 17 A top view of the backlit keyboard. Figure 19 For along Figure 18 A cross-sectional view of line segment HH'. (See diagram below.) Figures 17 to 19As shown, the main difference between the backlit keyboard 400 and the backlit keyboard 200 lies in the configuration position of the mesh 414; the mesh 414 is disposed on the side of the circuit layer 226 away from the base plate 224 and corresponds to at least one second channel 30 of the key module 220 (that is, the mesh 414 is disposed on the first side 224a and covers the second perforation 32 of the circuit layer 226).
[0081] In this embodiment, the first channel 80 and the second channel 30, which are arranged in correspondence and connected to each other, can serve as the sound outlet of a speaker (not shown) located below the backlit keyboard 400 (i.e., the sound outlet corresponds to the sound outlet of the speaker).
[0082] Furthermore, the surfaces of the reticle 414 and the circuit layer 226 furthest from the base plate 224 are set to the same color. Figures 17 to 19 In this embodiment, since the mesh 414 is disposed on the side of the circuit layer 226 away from the base plate 224, relative to Figures 2 to 4 The reticle 414 is located on the side of the third optical layer 1126 away from the second optical layer 1124. The relative distance between the circuit layer 226 and the reticle 414 along the thickness direction Z is small, so that there is no color difference when the user looks down at the backlit keyboard 400, and the user is not likely to notice the presence of the reticle 414.
[0083] In one embodiment, the thickness of the retina 414 may be greater than or equal to the thickness of the second optical layer 2124 or the thickness of the third optical layer 2126, and the thickness of the retina 414 may be, but is not limited to, 45 μm to 255 μm.
[0084] In one embodiment, the diaphragm 414 may be provided with a plurality of pores 73. The pore diameter of the pores 73 may be, but is not limited to, 18 μm to 285 μm. Through the design of the pores 73, the first channel 80 and the second channel 30, which serve as the sound outlet of the speaker located below the illuminated keyboard 400, can still maintain their sound propagation function, and can also effectively block external dust, moisture or other impurities.
[0085] In summary, the backlight module and illuminated keyboard of this application improve waterproofing and dustproofing by using a mesh with multiple pores. Furthermore, when the surfaces of the mesh and circuit layer away from the base plate are the same color and the second channel is exposed between adjacent key units, the mesh is positioned on the side of the first optical layer away from the second optical layer, between the first and third optical layers, or on the side of the circuit layer away from the base plate. Compared to the mesh being positioned on the side of the third optical layer away from the second optical layer, the relative distance between the circuit layer and the mesh along the thickness direction is smaller (the depth difference between the circuit layer and the mesh is smaller), resulting in less color difference when the user views the illuminated keyboard from above. Moreover, the mesh's multiple pores allow the first channel to maintain its heat dissipation / sound transmission function while effectively blocking external dust, moisture, or other impurities.
[0086] While the present invention has been described using the above embodiments, it should be noted that these descriptions are not intended to limit the scope of the invention. Rather, the invention encompasses modifications and similar arrangements that are obvious to those skilled in the art. Therefore, the claims should be interpreted in the broadest sense to include all obvious modifications and similar arrangements.
Claims
1. A backlight module, characterized in that, include: A light-emitting component having at least one first channel, the light-emitting component comprising: a first optical layer, a second optical layer and a third optical layer, the first optical layer and the third optical layer being disposed on opposite sides of the second optical layer, the at least one first channel penetrating the first optical layer, the second optical layer and the third optical layer; as well as A retina is provided corresponding to at least one first channel.
2. The backlight module according to claim 1, characterized in that, The first optical layer is a light-shielding sheet, the second optical layer is a light guide sheet, and the third optical layer is a reflective sheet.
3. The backlight module according to claim 1, characterized in that, The mesh is disposed on the side of the first optical layer away from the second optical layer.
4. The backlight module according to claim 3, characterized in that, The mesh covers a portion of the first optical layer and obscures the at least one first channel.
5. The backlight module according to claim 1, characterized in that, The mesh is disposed between the first optical layer and the third optical layer.
6. The backlight module according to claim 5, characterized in that, The mesh and the second optical layer are of the same structure.
7. The backlight module according to claim 5, characterized in that, The second optical layer has a receiving hole that extends through the thickness direction, and the mesh is disposed in the receiving hole, which is connected to the at least one first channel.
8. The backlight module according to claim 1, characterized in that, The mesh is disposed on the side of the third optical layer away from the second optical layer.
9. The backlight module according to claim 8, characterized in that, The mesh at least partially covers the third optical layer and obscures the at least one first channel.
10. The backlight module according to claim 8, characterized in that, The mesh completely covers the third optical layer and obscures the at least one first channel.
11. The backlight module according to claim 1, characterized in that, The first optical layer has at least one first through hole, the second optical layer has at least one second through hole, and the third optical layer has at least one third through hole. The at least one first through hole, the at least one second through hole, and the at least one third through hole correspond to each other to form the at least one first channel.
12. The backlight module according to claim 1, characterized in that, The mesh is provided with a plurality of pores, the plurality of pores corresponding to the at least one first channel, and the diameter of each of the plurality of pores in one direction is smaller than the diameter of the at least one first channel in that direction.
13. A backlit keyboard, characterized in that, include: The backlight module as described in any one of claims 1 to 12; as well as A button module has at least one second channel corresponding to the at least one first channel. The button module includes multiple button units, a base plate, and a circuit layer. The base plate is disposed on one side of the backlight module and away from the third optical layer. The circuit layer is disposed on the side of the base plate away from the backlight module. The multiple button units are disposed on the side of the circuit layer away from the base plate and are spaced apart. The at least one second channel penetrates the base plate and the circuit layer, and the at least one second channel is exposed between adjacent button units and / or located within the orthogonal projection range of a button unit on the circuit layer.
14. The illuminated keyboard according to claim 13, characterized in that, The surfaces of the mesh and the circuit layer away from the base plate are set to the same color.
15. A backlit keyboard, characterized in that, include: A light-emitting component having at least one first channel, the light-emitting component comprising: a first optical layer, a second optical layer and a third optical layer, the first optical layer and the third optical layer being disposed on opposite sides of the second optical layer, the at least one first channel penetrating the first optical layer, the second optical layer and the third optical layer; A button module has at least one second channel corresponding to the at least one first channel. The button module includes multiple button units, a base plate, and a circuit layer. The base plate is disposed on one side of the light-emitting component and away from the third optical layer. The circuit layer is disposed on the side of the base plate away from the light-emitting component. The multiple button units are disposed on the side of the circuit layer away from the base plate and are spaced apart. The at least one second channel penetrates the base plate and the circuit layer, and is exposed between adjacent button units. A mesh is disposed on the side of the circuit layer away from the base plate and corresponding to the at least one second channel.
16. The illuminated keyboard according to claim 15, characterized in that, The mesh is provided with a plurality of pores, the plurality of pores corresponding to the at least one first channel, and the diameter of each of the plurality of pores in one direction is smaller than the diameter of the at least one first channel in that direction.
17. The illuminated keyboard according to claim 15, characterized in that, The surfaces of the mesh and the circuit layer away from the base plate are set to the same color.
18. A backlit keyboard, characterized in that, include: The base plate has a first side and a second side that are opposite each other; Multiple button units are disposed on the first side, wherein there is a gap between two adjacent button units; A circuit layer is disposed between the base plate and the plurality of button units; A light-emitting component, disposed on the second side, the light-emitting component having a first channel; and A mesh is disposed in the first channel or the gap, wherein the surfaces of the mesh and the circuit layer are set to the same color.
19. The illuminated keyboard according to claim 18, characterized in that, The mesh has multiple pores and is light-transmitting.
20. The illuminated keyboard according to claim 18, characterized in that, The base plate has a first perforation, the circuit layer has a second perforation, the first perforation and the second perforation are provided with a gap corresponding to each other, and the mesh is disposed on the first side, covering the second perforation.
21. The illuminated keyboard according to claim 18, characterized in that, The base plate has a first perforation, and the circuit layer has a second perforation. The first perforation and the second perforation are arranged in a gap corresponding to each other. The mesh is disposed on the second side, covering the first channel of the light-emitting component, or located between the first channel and the first perforation.
22. The illuminated keyboard according to claim 18, characterized in that, The illuminated keyboard has a long side direction, and the first channel extends along the long side direction for any two adjacent key units.
23. The illuminated keyboard according to claim 18, characterized in that, The illuminated keyboard has two opposing short sides, and the first channel of the light-emitting component is correspondingly disposed on the two short sides.