Backlit keyboard
By setting different densities of dot structure on the light guide plate and lateral offset of key positions, the problem of the light guide plate not being able to be shared on backlit keyboards of different language systems is solved, achieving consistency of symbol brightness and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUAIAN DARFON ELECTRONICS
- Filing Date
- 2022-12-19
- Publication Date
- 2026-07-17
Smart Images
Figure CN116313606B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a backlit keyboard, and more particularly to a backlit keyboard having a light guide plate that can accommodate different language key combinations. Background Technology
[0002] Generally, a backlight module in a backlit keyboard includes a light guide plate and a backlight source. The base plate of the backlit keyboard is set on the light guide plate, and perforations are formed at the positions of multiple keys. The light guide plate has a dotted pattern at each perforation to guide light through the perforations and onto the symbols corresponding to the keys, producing a symbol illumination effect. However, because the key configuration on a backlit keyboard varies depending on the language family (such as American, British, Brazilian, Japanese, etc.), the perforation configuration on the base plate of backlit keyboards used in different language families will also be different, and the dotted pattern configuration on the light guide plate will also be different accordingly. This results in the problem that light guide plates cannot be shared, thereby increasing the manufacturing cost of the light guide plate for backlit keyboards. Summary of the Invention
[0003] The purpose of this invention is to provide a backlit keyboard with a light guide plate that can accommodate different language key combinations, so as to solve the above-mentioned problems.
[0004] According to one aspect of the present invention, a backlit keyboard is provided, comprising:
[0005] A first language key combination, comprising a first key having a first size;
[0006] A first base plate is disposed under the first language key combination. The first base plate has a first hole configuration corresponding to the position of the first key. The first hole configuration includes a first hole area and a second hole area that are opposite to each other.
[0007] A first backlight source, which is disposed under the first base plate and used to provide light; and
[0008] A light guide plate is used in the backlit keyboard and the second backlit keyboard. The second backlit keyboard includes a second language key combination, a second base plate, and a second backlight source. The second language key combination includes a second key with a second size, the first size being larger than the second size. The second base plate is disposed under the second language key combination. The second base plate has a second perforation configuration corresponding to the position of the second key. The second perforation configuration includes a third hole area and a fourth hole area that are opposite to each other. The second backlight source is disposed under the second base plate and is used to provide light. The position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, such that the fourth hole area and the first hole area have a first overlap area. The light guide plate is disposed under the first base plate or the second base plate. The light guide plate has a first dot structure corresponding to the first hole area and the third hole area, and the light guide plate has at least a second dot structure in at least part of the area of the second hole area and the fourth hole area, excluding the first overlap area, to guide light to illuminate the symbols on the first key and the second key.
[0009] The dot density of the first dot structure is less than that of the second dot structure.
[0010] As an optional technical solution, the first language key combination is a British language key combination or an American language key combination, and the second language key combination is a Japanese language key combination.
[0011] As an optional technical solution, the first perforation configuration further includes a fifth perforation area formed inward relative to the second perforation area, and the second perforation configuration further includes a sixth perforation area formed inward relative to the fourth perforation area; the position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, so that the fourth perforation area and the fifth perforation area have a second overlapping area.
[0012] The light guide plate has a third dot structure corresponding to the fifth and sixth hole areas and a second dot structure corresponding to the fourth hole area excluding the first and second overlapping areas; the dot density of the third dot structure is greater than that of the first dot structure and less than that of the second dot structure.
[0013] As an optional technical solution, the first perforation configuration further includes a fifth perforation area formed inward relative to the second perforation area, and the second perforation configuration includes a sixth perforation area formed inward relative to the fourth perforation area; the position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, so that the fourth perforation area and the fifth perforation area have a second overlapping area, and the sixth perforation area and the second perforation area have a third overlapping area;
[0014] The light guide plate has a second dot structure formed in the areas of the second and fourth aperture regions other than the first and second overlapping regions, and at least partially forms a third dot structure in the areas of the fifth and sixth aperture regions other than the third overlapping region. The dot density of the third dot structure is greater than that of the first dot structure and less than that of the second dot structure.
[0015] As an optional technical solution, the first perforation configuration further includes a first intermediate hole area, and the second perforation configuration further includes a second intermediate hole area; the position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, so that the second intermediate hole area and the first hole area have an intermediate overlapping area.
[0016] The light guide plate has at least a portion of the second dot structure formed in the area of the first intermediate hole region and the area of the second intermediate hole region other than the intermediate overlapping region.
[0017] As an optional technical solution, the horizontal direction is the long axis direction of the backlit keyboard.
[0018] According to another aspect of the invention, the invention also provides another backlit keyboard, which comprises:
[0019] The first language key combination includes a first key;
[0020] A first base plate is disposed under the first language key combination. The first base plate has a perforation configuration corresponding to the position of the first key. The perforation configuration includes at least one first hole area, at least one second hole area, and at least one third hole area. The first hole area and the second hole area are opposite to each other, and the third hole area is formed inward relative to the second hole area.
[0021] A first backlight source, which is disposed under the first base plate and used to provide light; and
[0022] A light guide plate is used for the backlit keyboard and a second backlit keyboard. The second backlit keyboard includes a second language key combination, a second base plate, and a second backlight source. The second language key combination includes a second key with the same size as the first key. The second base plate is disposed under the second language key combination and has a perforation configuration corresponding to the position of the second key. The second backlight source is disposed under the second base plate and is used to provide light. The position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, such that the position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard. The second hole area and the third hole area corresponding to the first button have a first overlapping area, and the third hole area corresponding to the second button and the second hole area corresponding to the first button have a second overlapping area; the light guide plate is disposed under the first base plate or the second base plate, the light guide plate has a first dot structure corresponding to the first hole area, the light guide plate has a second dot structure corresponding to the second hole area, and the light guide plate has at least a third dot structure formed in the area of the third hole area other than the first overlapping area and the second overlapping area, so as to guide light to illuminate the symbols on the first button and the second button;
[0023] The dot density of the third dot structure is greater than that of the first dot structure, and the dot density of the third dot structure is less than that of the second dot structure.
[0024] As an optional technical solution, the first language key combination is a British language key combination or an American language key combination, and the second language key combination is a Japanese language key combination.
[0025] As an optional technical solution, the perforation configuration also includes a central hole area; the position of the second button on the second backlit keyboard is laterally offset relative to the position of the first button on the backlit keyboard, such that the central hole area corresponding to the second button and the first hole area corresponding to the first button have a first central overlap area, and the first hole area corresponding to the second button and the central hole area corresponding to the first button have a second central overlap area.
[0026] The light guide plate has at least a portion of the second dot structure formed in the area of the central hole region other than the first and second central overlapping regions.
[0027] As an optional technical solution, the horizontal direction is the long axis direction of the backlit keyboard.
[0028] In summary, even when the keys in different language key combinations have different multiples of key size and are relatively laterally offset, the present invention can still produce a light guide plate that can be used to guide light for backlit keyboards of different languages. This effectively solves the problem mentioned in the prior art that light guide plates used on backlit keyboards of different languages cannot be shared, thereby reducing the manufacturing cost required for backlit keyboards in terms of light guide plate manufacturing.
[0029] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Attached Figure Description
[0030] Figure 1 This is a partially enlarged top view of a first backlit keyboard according to an embodiment of the present invention.
[0031] Figure 2 for Figure 1 An exploded view of the cross-section of the first backlit keyboard along section line I-I.
[0032] Figure 3 This is a partially enlarged top view of a second backlit keyboard according to an embodiment of the present invention.
[0033] Figure 4 for Figure 3 Exploded view of the cross-section along section line II-II of the second backlit keyboard.
[0034] Figure 5 for Figure 1 The first hole configuration of the first button on the first base plate and Figure 3 A schematic diagram showing the overlapping holes of the second hole configuration corresponding to the second button on the second base plate.
[0035] Figure 6 for Figure 1 The first hole configuration of the first button on the first base plate and Figure 3 A schematic diagram showing the overlapping holes of the second hole configuration corresponding to the second button on the second base plate.
[0036] Figure 7 for Figure 1 The perforation configuration of the first button on the first base plate and Figure 3 A schematic diagram showing the overlapping perforations of the second button on the second base plate.
[0037] Figure 8 This is a partially enlarged top view of a third backlit keyboard according to an embodiment of the present invention. Detailed Implementation
[0038] Please see Figures 1 to 4 , Figure 1This is a partially enlarged top view of the first backlit keyboard 1 according to an embodiment of the present invention. Figure 2 for Figure 1 An exploded view of the cross-section of the first backlit keyboard 1 along section line I-I. Figure 3 This is a partially enlarged top view of the second backlit keyboard 100 according to an embodiment of the present invention. Figure 4 for Figure 3 An exploded cross-sectional view of the second backlit keyboard 100 along section line II-II, wherein, to clearly show the corresponding positional relationship between the bottom plate perforations and keys of the first backlit keyboard 1 and the second backlit keyboard 100, the first language key combination 12 is shown in... Figure 1 The text is simplified with dotted lines, and the second language key combination 102 is... Figure 3 The middle part is simplified with a dashed line.
[0039] like Figures 1 to 4 As shown, the light guide plate 10 can be used for guiding light in both the first backlit keyboard 1 and the second backlit keyboard 100. The first backlit keyboard 1 includes the light guide plate 10, a first language key combination 12, a first base plate 14, and a first backlight source 16 (preferably a light-emitting diode, but not limited thereto). The first language key combination 12 includes first keys 18 and 20 with different multiples of key size. Figure 1 The first backlit keyboard 100 includes five first keys 18 with a key size of 1x and one first key 20 with a key size of 0.88x (but is not limited thereto). A first base plate 14 is disposed below the first language key combination 12, and a first backlight source 16 is disposed below the first base plate 14 to provide light for the key symbols of the first backlit keyboard 1 to illuminate. The second backlit keyboard 100 includes a second language key combination 102, a second base plate 104, and a second backlight source 106 (preferably a light-emitting diode, but not limited thereto). The second language key combination 102 includes at least one second key 108 with the same key size multiple (in...). Figure 3 (Six are displayed, but not limited to this). The second base plate 104 is located below the second language key combination 102, and the second backlight source 106 is located below the second base plate 104 to provide the light required for the key symbols of the second backlit keyboard 100 to illuminate. In this way, as... Figure 2 as well as Figure 4 As shown, through the configuration of the light guide plate 10 under the first base plate 14, the light generated by the first backlight source 16 can pass through the first base plate 14 and be incident on the first language keypad assembly 12. And through the configuration of the light guide plate 10 under the second base plate 104, the light generated by the second backlight source 106 can pass through the second base plate 104 and be incident on the second language keypad assembly 102, thereby causing the symbols on the upper surfaces of the first language keypad assembly 12 and the second language keypad assembly 102 to produce a light-emitting effect.
[0040] The following describes in detail the dot matrix structure design of the light guide plate 10, using the first language key combination 12 corresponding to the British language and the second language key combination 102 corresponding to the Japanese language as examples. Please refer to [link / reference]. Figure 1 , Figure 3 as well as Figure 5 , Figure 5 for Figure 1 The first hole configuration H1 of the first base plate 14 corresponding to the first button 18 is with Figure 3 The diagram shows the overlapping perforations of the second perforation configuration H2 corresponding to the second button 108 on the second base plate 104. To clearly show the corresponding positional relationship between the perforation configuration and the button, the first button 18 and the second button 108 are... Figure 5 Part (a) of the diagram is simplified with dashed lines, and the symbols on the upper surfaces of the first button 18 and the second button 108 are shown in... Figure 5 Part (a) of the diagram is represented by a thick black line.
[0041] Depend on Figure 1 , Figure 3 as well as Figure 5 Part (a) of the diagram (to clearly show the first base plate 14 and the first button 18 in the first language key combination 12 and the second base plate 104 and the second button 108 in the second language key combination 102, Figure 5 In part (a) of the diagram, the first base plate 14 and the first button 18 are drawn independently and do not overlap with the second base plate 104 and the second button 108. Figure 5 Part (b) of the diagram and Figure 5 In part (c) of the diagram, the first base plate 14 and the first button 18 are drawn overlappingly with the second base plate 104 and the second button 108 to illustrate the distribution of the overlapping area and the distribution of the dot structure of the light guide plate 10. This overlapping illustration is only to show the distribution of the dot structure of the light guide plate 10 when applicable to keyboards of different language systems, and does not indicate that the actual product can overlap. It can be seen that the first button 18 in the first language key combination 12 can be a single-key layout (which can be considered to have a first size, such as...). Figure 1 as well as Figure 5 The first key 18 shown in part (a) of the diagram has the symbols _ and -. The second key 108 in the second language key combination 102 can be a 0.88 multiplier key (which can be regarded as having a second size, such as...). Figure 3 as well as Figure 5The second button 108 (shown in part (a) of the diagram) has the symbols = and -. The first base plate 14 has a first perforation configuration H1 at the position corresponding to the first button 18. The first perforation configuration H1 includes a first hole area h11 and a second hole area h12 that are opposite to each other. The second base plate 104 has a second perforation configuration H2 at the position corresponding to the second button 108. The second perforation configuration H2 includes a third hole area h21 and a fourth hole area h22 that are opposite to each other.
[0042] Depend on Figure 1 , Figure 3 , Figure 5 Part (b) of the diagram and Figure 5 As shown in part (c) of the diagram, the position of the second key 108 on the second backlit keyboard 100 is laterally offset relative to the position of the first key 18 on the first backlit keyboard 1 (in one embodiment, "lateral" can be considered as the long axis direction of the backlit keyboard, the same below), so that the fourth hole area h22 and the first hole area h11 have a first overlapping area r1. In this embodiment, as shown in part (c) of the diagram, the second key 108 is laterally offset relative to the position of the first key 18 on the first backlit keyboard 1 (in one embodiment, "lateral" can be considered as the long axis direction of the backlit keyboard, the same below), so that the fourth hole area h22 and the first hole area h11 have a first overlapping area r1. Figure 5 As shown in part (c) of the diagram, the light guide plate 10 has a first dot structure d1 (preferably formed by microprisms or dot printing, but not limited to) corresponding to the first aperture region h11 and the third aperture region h21, and a second dot structure d2 (preferably formed by microprisms or dot printing, but not limited to) corresponding to the second aperture region h12 and the fourth aperture region h22, at least in areas other than the first overlapping region r1. The dot density of the first dot structure d1 is less than the dot density of the second dot structure d2. That is, the light guide plate 10 forms a first dot structure d1 with a lower dot density at the position of the first overlapping region r1 within the first aperture region h11 (in practical applications, formed by...). Figure 5 As shown in part (c) of the diagram, a first dot structure d1 can also be further formed on the light guide plate 10 at the location adjacent to the first overlapping area r1 within the fourth hole area h22 (but this is not a limitation), thereby preventing the symbols on the first button 18 and the second button 108 from being too bright at the positions corresponding to the first overlapping area r1. In this way, regardless of whether the light guide plate 10 is installed in the first backlit keyboard 1 with the first language key combination 18 or in the second backlit keyboard 100 with the second language key combination 108, the light emitted by the first backlight source 16 and the second backlight source 106 can pass through as... Figure 5 The arrangement of the first dot structure d1 and the second dot structure d2 shown in part (c) of the diagram allows for more uniform incident light onto the positions of the first key 18 corresponding to the first hole area h11 and the second hole area h12, and the positions of the second key 108 corresponding to the third hole area h21 and the fourth hole area h22 (or, in other words, when the light guide plate 10 is disposed in the first backlit keyboard 1 with the first language key combination 18 configuration, the light emitted by the first backlight source 16 can pass through as...). Figure 5 The arrangement of the first dot structure d1 and the second dot structure d2 shown in part (c) of the diagram allows for more uniform illumination onto the positions of the first key 18 corresponding to the first hole area h11 and the second hole area h12; and when the light guide plate 10 is disposed in the second backlit keyboard 100 having a second language key combination 108 configuration, the light emitted by the second backlight source 106 can pass through as... Figure 5 The configuration of the first dot structure d1 and the second dot structure d2 shown in part (c) of the diagram allows for more uniform illumination onto the positions of the third hole area h21 and the fourth hole area h22 corresponding to the second key 108. This solves the problem mentioned in the prior art that the light guide plates used on backlit keyboards of different language systems cannot be shared, thereby producing a uniform and consistent light-emitting effect on the corresponding symbols on the first key 18 and the second key 108.
[0043] In practical applications, by Figure 5 Part (a) of the diagram and Figure 5As shown in part (b) of the diagram, the first perforation configuration H1 may further include a fifth perforation area h13 formed inward relative to the second perforation area h12, and the second perforation configuration H2 may further include a sixth perforation area h23 formed inward relative to the fourth perforation area h22. The position of the second button 108 on the second backlit keyboard 100 is laterally offset relative to the position of the first button 18 on the first backlit keyboard 1 (in one embodiment, "lateral" can be regarded as the long axis direction of the backlit keyboard, the same below), so that the fourth perforation area h22 and the fifth perforation area h13 may have a second overlapping area r2, wherein the light guide plate 10 forms a second overlapping area r2 corresponding to the fifth perforation area h13 and the sixth perforation area h23. A third dot structure d3 (preferably formed by microprisms or dot printing, but not limited thereto) is formed in the area of the fourth hole region h22, excluding the first overlapping region r1 and the second overlapping region r2, at least partially forming the second dot structure d2. The dot density of the third dot structure d3 is greater than that of the first dot structure d1 and less than that of the second dot structure d2. In other words, the light guide plate 10 forms a third dot structure d3 with a lower dot density than the second dot structure d2 at the position corresponding to the second overlapping region r2, thereby avoiding the problem of overly bright symbols appearing on the first button 18 and the second button 108 at the position corresponding to the second overlapping region r2. In this way, the light emitted by the first backlight source 16 and the second backlight source 106 can be more evenly incident on the position of the fifth hole area h13 corresponding to the first key 18 and the position of the sixth hole area h23 corresponding to the second key 108 through the above configuration (or, when the light guide plate 10 is set in the first backlit keyboard 1 with the first language key combination 18 configuration, the light emitted by the first backlight source 16 can be more evenly incident on the position of the fifth hole area h13 corresponding to the first key 18 through the above configuration; when the light guide plate 10 is set in the second backlit keyboard 100 with the second language key combination 108 configuration, the light emitted by the second backlight source 106 can be more evenly incident on the position of the sixth hole area h23 corresponding to the second key 108 through the above configuration), thereby producing a uniform and consistent light emission effect for the corresponding symbols on the first key 18 and the second key 108.
[0044] In addition, by Figure 5 Part (a) of the diagram and Figure 5 As shown in part (b) of the diagram, the first perforation configuration H1 may further include a first intermediate hole area h14, and the second perforation configuration H2 may further include a second intermediate hole area h24. The position of the second button 108 on the second backlit keyboard 100 is laterally offset relative to the position of the first button 18 on the first backlit keyboard 1, such that the second intermediate hole area h24 and the first hole area h11 have an intermediate overlapping area rc. The light guide plate 10, corresponding to the areas of the first intermediate hole area h14 and the second intermediate hole area h24, excluding the intermediate overlapping area rc, at least partially forms a second dot structure d2 (in practical applications, by...). Figure 5 As can be seen from part (c) of the diagram, a first dot structure d1 may be further formed on the light guide plate 10 at the position adjacent to the intermediate overlapping area rc within the second intermediate hole area h24 (but not limited thereto). In other words, the light guide plate 10 forms a first dot structure d1 with a lower dot density at the position of the intermediate overlapping area rc within the first hole area h11, thereby avoiding the problem of overly bright symbols appearing on the first button 18 and the second button 108 at the position corresponding to the intermediate overlapping area rc. In this way, the light emitted by the first backlight source 16 and the second backlight source 106 can be more evenly incident on the position of the first key 18 corresponding to the first intermediate hole area h14 and the position of the second key 108 corresponding to the second intermediate hole area h24 through the above configuration (or, when the light guide plate 10 is set in the first backlit keyboard 1 with the first language key combination 18 configuration, the light emitted by the first backlight source 16 can be more evenly incident on the position of the first key 18 corresponding to the first intermediate hole area h14 through the above configuration; when the light guide plate 10 is set in the second backlit keyboard 100 with the second language key combination 108 configuration, the light emitted by the second backlight source 106 can be more evenly incident on the position of the second key 108 corresponding to the second intermediate hole area h24 through the above configuration), thereby producing a uniformly bright illumination effect for the corresponding symbols on the first key 18 and the second key 108.
[0045] It should be noted that the corresponding dot pattern design on the light guide plate 10 will differ depending on the lateral offset of the second key 108 on the second backlit keyboard 100 relative to the position of the first key 18 on the first backlit keyboard 1. In short, please refer to... Figure 1 , Figure 3 as well as Figure 6 , Figure 6 for Figure 1 The first hole configuration H1 of the first base plate 14 corresponding to the first button 18 is with Figure 3 The diagram shows the overlapping perforations of the second perforation configuration H2 corresponding to the second button 108 on the second base plate 104. To clearly show the corresponding positional relationship between the perforation configuration and the button, the first button 18 and the second button 108 are... Figure 6 Part (a) of the diagram is simplified with dashed lines, and the symbols on the upper surfaces of the first button 18 and the second button 108 are shown in... Figure 6 Part (a) is indicated by a thick black line in the diagram.
[0046] Depend on Figure 1 , Figure 3 , Figure 6 Part (a) of the diagram and Figure 6(b) Part of the diagram (to clearly show the first base plate 14 and the first button 18 in the first language key combination 12 and the second base plate 104 and the second button 108 in the second language key combination 102, Figure 6 In part (a) of the diagram, the first base plate 14 and the first button 18 are drawn independently and do not overlap with the second base plate 104 and the second button 108. Figure 6 Part (b) of the diagram and Figure 6 In part (c) of the diagram, the first base plate 14 and the first button 18 are drawn overlappingly with the second base plate 104 and the second button 108 to illustrate the distribution of the overlapping area and the distribution of the dot structure of the light guide plate 10. This overlapping illustration is only to show the distribution of the dot structure of the light guide plate 10 when applicable to keyboards of different language systems, and does not indicate that the actual product can overlap. It can be seen that the first button 18 in the first language key combination 12 can be a single key (e.g., ...). Figure 1 as well as Figure 6 The first key 18 shown in part (a) of the diagram has the symbols + and =. The second key 108 in the second language key combination 102 can be a 0.88 multiplier key (e.g., ...). Figure 3 as well as Figure 6 The second key 108 (shown by the symbols ~ and ^) on the second backlit keyboard 100 is laterally offset relative to the position of the first key 18 on the first backlit keyboard 1 (in one embodiment, "lateral" can be considered as the long axis direction of the backlit keyboard, the same below), so that the fourth hole area h22 and the first hole area h11 can have a first overlapping area r1'. The light guide plate 10 forms a first dot structure d1 corresponding to the first hole area h11 and the third hole area h21, and forms a second dot structure d2 corresponding to the second hole area h12 and the fourth hole area h22 in at least the area other than the first overlapping area r1' (e.g., Figure 6 As shown in part (c) of the diagram, that is, the light guide plate 10 forms a first dot structure d1 with a low dot density at the position of the first overlapping area r1' located in the first hole area h11, so as to avoid the problem of overly bright symbols on the first button 18 and the second button 108 at the position corresponding to the first overlapping area r1'.
[0047] In addition, such as Figure 6As shown in part (b) of the diagram, the fourth hole region h22 and the fifth hole region h13 may have a second overlapping region r2', and the sixth hole region h23 and the second hole region h12 may have a third overlapping region r3, and the second intermediate hole region h24 and the first hole region h11 have an intermediate overlapping region rc'. In this embodiment, the light guide plate 10 can form a second dot structure d2 in the areas of the second hole area h12 and the fourth hole area 22, excluding the first overlapping area r1' and the second overlapping area r2'. The light guide plate 10 can also form a second dot structure d2 in the areas of the first intermediate hole area h14 and the second intermediate hole area h24, excluding the intermediate overlapping area rc'. That is, the light guide plate 10 forms a third dot structure d3 with a lower dot density than the second dot structure d2 at the position corresponding to the second overlapping area r2'. The light guide plate 10 forms a first dot structure d1 with a lower dot density at the position corresponding to the intermediate overlapping area rc' located in the first hole area h11. This is to avoid the problem of overly bright symbols appearing at the positions corresponding to the second overlapping area r2' and the intermediate overlapping area rc' on the first button 18 and the second button 108.
[0048] Furthermore, the areas of the light guide plate 10 corresponding to the fifth aperture area h13 and the sixth aperture area h23, excluding the third overlapping area r3, can at least partially form a third dot structure d3. More specifically, in practical applications, the light guide plate 10 can be formed by... Figure 6 As can be seen from part (c) of the diagram, it is preferable that the light guide plate 10 does not form a dot structure at the location of the sixth hole area h23 adjacent to the third overlapping area r3, but only forms a second dot structure d2 at the location corresponding to the third overlapping area r3, so as to avoid the problem of the symbol being too bright at the location of the second button 108 corresponding to the sixth hole area h23.
[0049] In this way, in the above-mentioned Figure 6In the key offset configuration shown in part (b) of the diagram, regardless of whether the light guide plate 10 is set in the first backlit keyboard 1 with the first language key combination 12 configuration or in the second backlit keyboard 100 with the second language key combination 102 configuration, the light emitted by the first backlight source 16 and the second backlight source 106 can be more evenly incident on the position of the first key 18 corresponding to the first hole configuration H1 and the position of the second key 108 corresponding to the second hole configuration H2 through the above configuration (or, when the light guide plate 10 is set in the first language key combination 12 configuration 12 configuration 102 configuration 102 configuration 103 configuration 104 configuration 105 configuration 106 ... When the first backlit keyboard 1 with the configuration of the first backlit keyboard 108 is configured, the light emitted by the first backlight source 16 can be more evenly incident on the position of the first key 18 corresponding to the first hole configuration H1 through the above configuration; when the light guide plate 10 is set in the second backlit keyboard 100 with the second language key combination 108 configuration, the light emitted by the second backlight source 106 can be more evenly incident on the position of the second key 108 corresponding to the second hole configuration H2 through the above configuration, thereby producing a uniform and consistent light emission effect on the first key 18 and the corresponding symbols on the second key 108.
[0050] It is worth mentioning that when the position of the second key 108 on the second backlit keyboard 100 is laterally offset relative to the position of the first key 20 on the first backlit keyboard 1, the corresponding dot structure design on the light guide plate 10 will also be different. In short, please refer to... Figure 1 , Figure 3 as well as Figure 7 , Figure 7 for Figure 1 The first base plate 14 has a hole configuration H corresponding to the first button 20. Figure 3 The diagram shows the overlapping perforations of the second base plate 104 and the second button 108. To clearly show the correspondence between the perforation configuration and the button's position, the first button 20 and the second button 108 are shown in... Figure 7 Part (a) of the diagram is simplified with dashed lines, and the symbols on the upper surfaces of the first button 20 and the second button 108 are shown in... Figure 7 Part (a) of the diagram is represented by a thick black line.
[0051] Depend on Figure 1 , Figure 3 , Figure 7 Part (a) of the diagram and Figure 7 (b) Part of the diagram (to clearly show the first base plate 14 and the first button 18 in the first language key combination 12 and the second base plate 104 and the second button 108 in the second language key combination 102, Figure 7 In part (a) of the diagram, the first base plate 14 and the first button 18 are drawn independently and do not overlap with the second base plate 104 and the second button 108. Figure 7Part (b) of the diagram and Figure 7 In part (c) of the diagram, the first base plate 14 and the first button 18 are drawn overlappingly with the second base plate 104 and the second button 108 to illustrate the distribution of the overlapping area and the distribution of the dot structure of the light guide plate 10. This overlapping illustration is only to show the distribution of the dot structure of the light guide plate 10 when applicable to keyboards of different language systems, and does not indicate that the actual product can overlap. It can be seen that the first button 20 in the first language key combination 12 can be a 0.88 multiplier key (e.g., ...). Figure 1 as well as Figure 7 The first key 20 shown in part (a) of the diagram has the symbols ~ and #. The second key 108 in the second language key combination 102 can be a 0.88 multiplier key (e.g., Figure 3 as well as Figure 7 The second button 108 (shown by symbols} and ] in part (a) of the diagram has perforation configurations H formed on the first base plate 14 at the position corresponding to the first button 20 and on the second base plate 104 at the position corresponding to the second button 108. The perforation configurations H include at least one first hole region h1 and at least one second hole region h2 that are opposite to each other, and at least one third hole region h3 formed inwardly relative to the second hole region h2. Figure 7 (Two are shown in part (a) of the diagram, but not limited to this) The position of the second button 108 on the second backlit keyboard 100 is laterally offset relative to the position of the first button 20 on the first backlit keyboard 1, such that the second hole area h2 corresponding to the second button 108 and the third hole area h3 corresponding to the first button 20 have a first overlapping area r1” and the third hole area h3 corresponding to the second button 108 and the second hole area h2 corresponding to the first button 20 have a second overlapping area r2”. The light guide plate 10 has a first dot structure d1 corresponding to the first hole area h1, a second dot structure d2 corresponding to the second hole area h2, and at least part of the area of the third hole area h3 other than the first overlapping area r1” and the second overlapping area r2” has a third dot structure d3. More specifically, in practical applications, by Figure 7 As can be seen from part (c) of the diagram, it is preferable that no halftone structure is formed on the light guide plate 10 at the position corresponding to the first overlapping area r1” and the second overlapping area r2” in the third hole area h3, but only a second halftone structure d2 is formed at the position corresponding to the first overlapping area r1” and the second overlapping area r2”, so as to avoid the problem of overly bright symbols on the first button 20 and the second button 108 at the position corresponding to the third hole area h3.
[0052] Furthermore, the perforation configuration H may further include at least one intermediate hole region h4 (in Figure 7(Two are shown in part (b) of the diagram, but not limited to this), in the configuration where the position of the second button 108 on the second backlit keyboard 100 is laterally offset relative to the position of the first button 20 on the first backlit keyboard 1, the middle hole area h4 corresponding to the second button 108 and the first hole area h1 corresponding to the first button 20 have a first intermediate overlapping area rc1, and the first hole area h1 corresponding to the second button 108 and the middle hole area h4 corresponding to the first button 20 have a second intermediate overlapping area rc2. The area of the light guide plate 10 corresponding to the middle hole area h4, excluding the first intermediate overlapping area rc1 and the second intermediate overlapping area rc2, is at least partially formed with a second dot structure d2. That is, the light guide plate 10 forms a first dot structure d1 with a lower dot density at the position of the first intermediate overlapping area rc1 and the second intermediate overlapping area rc2 located in the first hole area h1 (in practical applications, by Figure 7 As can be seen from part (c) of the diagram, a first dot structure d1 may also be formed on the light guide plate 10 at the location adjacent to the first intermediate overlapping area rc1 and the second intermediate overlapping area rc2 in the middle hole area h4 (but this is not limited), so as to avoid the problem of overly bright symbols appearing on the first button 20 and the second button 108 at the positions corresponding to the first intermediate overlapping area rc1 and the second intermediate overlapping area rc2.
[0053] In this way, in the above-mentioned Figure 7 In the key offset configuration shown in part (b) of the diagram, regardless of whether the light guide plate 10 is set in the first backlit keyboard 1 with the first language key combination 12 configuration or in the second backlit keyboard 100 with the second language key combination 102 configuration, the light emitted by the first backlight source 16 and the second backlight source 106 can be more evenly incident on the position of the perforation configuration H corresponding to the first key 20 and the position of the perforation configuration H corresponding to the second key 108 through the above configuration (or, when the light guide plate 10 is set in the first language key combination 12 configuration 12 configuration 102 configuration 103 configuration 104 configuration 105 configuration 106 ... When the first backlit keyboard 1 with the configuration of the first backlit keyboard 100 is configured with the second language key combination 108, the light emitted by the first backlight source 16 can be incident more evenly onto the position of the perforation configuration H corresponding to the first key 20 through the above configuration; when the light guide plate 10 is set in the second backlit keyboard 100 with the second language key combination 108 configuration, the light emitted by the second backlight source 106 can be incident more evenly onto the position of the perforation configuration H corresponding to the second key 108 through the above configuration, thereby producing a uniform and consistent light emission effect on the corresponding symbols on the first key 20 and the second key 108.
[0054] In summary, regardless of whether the light guide plate 10 is disposed in the first backlit keyboard 1 with a first language key combination 12 configuration, or in the second backlit keyboard 100 with a second language key combination 102 configuration, the light emitted by the first backlight source 16 and the second backlight source 106 can be more evenly incident on the first language key combination 12 and the second language key combination 102 through the dot structure design of the light guide plate 10, thereby producing a uniform illumination effect of the symbols on the first key 18, 20 and the second key 108. In this way, even when the keys in different language key combinations have different multiples of key size and are relatively laterally offset, the present invention can still produce the effect of the light guide plate being applicable to the light guidance of backlit keyboards of different language systems simultaneously, thereby effectively solving the problem mentioned in the prior art that light guide plates applied to backlit keyboards of different language systems cannot be shared, thereby reducing the manufacturing cost required for the manufacturing of light guide plates for backlit keyboards.
[0055] Furthermore, the dotted structure design of the light guide plate 10 of the present invention can be applied to the third backlit keyboard 200. Please refer to [link / reference]. Figure 1 as well as Figure 8 , Figure 8 This is a partially enlarged top view of a third backlit keyboard 200 according to an embodiment of the present invention, wherein, in order to clearly show the corresponding positional relationship between the perforations in the base plate of the third backlit keyboard 200 and the keys, the third language key combination 202 is... Figure 8 The middle part is simplified with a dashed line. For example... Figure 1 as well as Figure 8 As shown, the third backlit keyboard 200 includes a third language key combination 202, a third base plate 204, and a third backlight source (not shown in the figure, which may preferably be a light-emitting diode, but is not limited thereto). In this embodiment, the third language key combination 202 may preferably correspond to the key configuration of the American language system, and from Figure 1 as well as Figure 8 A comparison reveals that the third language key combination 202 has a similar 1x key configuration to the first language key combination 12 (i.e., the third language key combination 202 also includes five first keys 18 with 1x key size and the same arrangement). Therefore, the light guide plate 10 can also be used for guiding the light of the third backlit keyboard 200. In other words, the present invention can further enable the light guide plate 10 to be shared by the first backlit keyboard 1, the second backlit keyboard 100, and the third backlit keyboard 200, thereby effectively solving the problem mentioned in the prior art that the light guide plates applied to backlit keyboards of different languages cannot be shared, thereby reducing the manufacturing cost required for the backlit keyboard in the manufacturing of the light guide plate.
[0056] The above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be included in the scope of the present invention.
Claims
1. A backlit keyboard, characterized in that, It includes: A first language key combination, comprising a first key having a first size; A first base plate is disposed under the first language key combination. The first base plate has a first hole configuration corresponding to the position of the first key. The first hole configuration includes a first hole area and a second hole area that are opposite to each other. A first backlight source is disposed under the first base plate and is used to provide light; as well as A light guide plate is used in the backlit keyboard and the second backlit keyboard. The second backlit keyboard includes a second language key combination, a second base plate, and a second backlight source. The second language key combination includes a second key with a second size, the first size being larger than the second size. The second base plate is disposed under the second language key combination. The second base plate has a second perforation configuration corresponding to the position of the second key. The second perforation configuration includes a third hole area and a fourth hole area that are opposite to each other. The second backlight source is disposed under the second base plate and is used to provide light. The position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, such that the fourth hole area and the first hole area have a first overlap area. The light guide plate is disposed under the first base plate or the second base plate. The light guide plate has a first dot structure corresponding to the first hole area and the third hole area, and the light guide plate has at least a second dot structure in at least part of the area of the second hole area and the fourth hole area, excluding the first overlap area, to guide light to illuminate the symbols on the first key and the second key. The dot density of the first dot structure is less than that of the second dot structure.
2. The backlit keyboard according to claim 1, characterized in that, The first language key combination is either the British or American language key combination, and the second language key combination is the Japanese language key combination.
3. The backlit keyboard according to claim 1, characterized in that, The first perforation configuration further includes a fifth perforation area formed inward relative to the second perforation area, and the second perforation configuration further includes a sixth perforation area formed inward relative to the fourth perforation area; the position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, so that the fourth perforation area and the fifth perforation area have a second overlapping area. The light guide plate has a third dot structure corresponding to the fifth and sixth hole areas and a second dot structure corresponding to the fourth hole area excluding the first and second overlapping areas; the dot density of the third dot structure is greater than that of the first dot structure and less than that of the second dot structure.
4. The backlit keyboard according to claim 1, characterized in that, The first perforation configuration further includes a fifth perforation area formed inward relative to the second perforation area, and the second perforation configuration includes a sixth perforation area formed inward relative to the fourth perforation area; the position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, such that the fourth perforation area and the fifth perforation area have a second overlapping area, and that the sixth perforation area and the second perforation area have a third overlapping area; The light guide plate has a second dot structure formed in the areas of the second and fourth aperture regions other than the first and second overlapping regions, and at least partially forms a third dot structure in the areas of the fifth and sixth aperture regions other than the third overlapping region. The dot density of the third dot structure is greater than that of the first dot structure and less than that of the second dot structure.
5. The backlit keyboard according to claim 1, 3, or 4, characterized in that, The first perforation configuration also includes a first intermediate hole area, and the second perforation configuration also includes a second intermediate hole area; the position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, so that the second intermediate hole area and the first hole area have an intermediate overlapping area. The light guide plate has at least a portion of the second dot structure formed in the area of the first intermediate hole region and the area of the second intermediate hole region other than the intermediate overlapping region.
6. The backlit keyboard according to claim 1, characterized in that, The horizontal direction is the long axis of the backlit keyboard.
7. A backlit keyboard, characterized in that, It includes: The first language key combination includes a first key; A first base plate is disposed under the first language key combination. The first base plate has a perforation configuration corresponding to the position of the first key. The perforation configuration includes at least one first hole area, at least one second hole area, and at least one third hole area. The first hole area and the second hole area are opposite to each other, and the third hole area is formed inward relative to the second hole area. A first backlight source is disposed under the first base plate and is used to provide light; as well as A light guide plate is used for the backlit keyboard and a second backlit keyboard. The second backlit keyboard includes a second language key combination, a second base plate, and a second backlight source. The second language key combination includes a second key with the same size as the first key. The second base plate is disposed under the second language key combination and has a perforation configuration corresponding to the position of the second key. The second backlight source is disposed under the second base plate and is used to provide light. The position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, such that the position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard. The second hole area and the third hole area corresponding to the first button have a first overlapping area, and the third hole area corresponding to the second button and the second hole area corresponding to the first button have a second overlapping area; the light guide plate is disposed under the first base plate or the second base plate, the light guide plate has a first dot structure corresponding to the first hole area, the light guide plate has a second dot structure corresponding to the second hole area, and the light guide plate has at least a third dot structure formed in the area of the third hole area other than the first overlapping area and the second overlapping area, so as to guide light to illuminate the symbols on the first button and the second button; The dot density of the third dot structure is greater than that of the first dot structure, and the dot density of the third dot structure is less than that of the second dot structure.
8. The backlit keyboard according to claim 7, characterized in that, The first language key combination is either the British or American language key combination, and the second language key combination is the Japanese language key combination.
9. The backlit keyboard according to claim 7, characterized in that, The perforation configuration also includes a central perforation area; the position of the second key on the second backlit keyboard is laterally offset relative to the position of the first key on the backlit keyboard, such that the central perforation area corresponding to the second key and the first perforation area corresponding to the first key have a first central overlap area, and the first perforation area corresponding to the second key and the central perforation area corresponding to the first key have a second central overlap area. The light guide plate has at least a portion of the second dot structure formed in the area of the central hole region other than the first and second central overlapping regions.
10. The backlit keyboard according to claim 7, characterized in that, The horizontal direction is the long axis of the backlit keyboard.