TWI827380B - Backlight keyboard - Google Patents

Abstract

A backlight keyboard includes a first keyswitch, a first backlight source, a light guide plate and a first board having first and second holes. The light guide plate is applied to the backlight keyboard and a second backlight keyboard including a second keyswitch, a second backlight source and a second board having third and fourth holes. The second keyswitch on the second backlight keyboard is shifted transversely relative to the first keyswitch on the backlight keyboard to form a first overlapping region between the first and fourth holes. The light guide plate has a first dot structure corresponding to the first and third holes and a second dot structure corresponding to the second and fourth holes except the first overlapping region for guiding light to symbols on the first and second keyswitches. The second dot structure is less than the first dot structure in dot intensity.

Description

backlit keyboard

The present invention relates to a backlight keyboard, and in particular, to a backlight keyboard having a light guide plate applicable to different language key combinations.

Generally speaking, the backlight module of a backlight keyboard includes a light guide plate and a backlight source. The bottom plate of the backlight keyboard is disposed on the light guide plate and has holes corresponding to the plurality of keys of the backlight keyboard. The light guide plate corresponds to A dot structure is formed at the position of each hole to guide light through the hole to the corresponding symbol on the key to produce a symbol luminous effect. However, since the key configurations on the backlit keyboard vary with different languages (such as American, British, Brazilian, Japanese, etc.), the bottom plates used in backlit keyboards of different language systems have holes. The configuration will also be different, and the dot structure configuration on the light guide plate will also be correspondingly different, so there will be a problem that the light guide plates cannot be shared, thereby increasing the manufacturing cost of the light guide plate for the backlight keyboard.

Therefore, an object of the present invention is to provide a backlit keyboard with a light guide plate applicable to different language key combinations, so as to solve the above problems.

According to an embodiment, the backlight keyboard of the present invention includes a first language key combination, a first base plate, a first backlight source, and a light guide plate. The first language key combination includes at least one first key having a first size. The first base plate is disposed under the first language button combination. The first base plate is formed with a first hole arrangement corresponding to the position of the first button. The first hole arrangement includes a first hole area and a first hole area opposite to each other. Second hole area. The first backlight source is disposed under the first base plate and used to provide light. The light guide plate is suitable for the backlight keyboard and a second backlight keyboard, and the second backlight key The disk includes a second language key combination, a second bottom panel, and a second backlight source. The second language key combination includes at least one 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 button combination. The second base plate is formed with a second hole arrangement corresponding to the position of the second button. The second hole arrangement includes a third hole area and a third hole area opposite to each other. In the fourth hole area, the second backlight source is disposed under the second bottom plate to provide light; the position of the second key on the second backlight keyboard is laterally offset relative to the position of the first key on the backlight keyboard. Move so that the fourth hole area and the first hole area have a first overlapping area; the light guide plate is disposed under the first bottom plate or the second bottom plate, and the light guide plate corresponds to the first hole area and the third hole area. A first mesh structure is formed in the three hole area, and a second mesh structure is formed at least partially in the area corresponding to the second hole area and the fourth hole area except the first overlapping area to guide light to illuminate the The first button and the symbol on the second button. The dot density of the first dot structure is smaller than the dot density of the second dot structure.

According to another embodiment, the backlight keyboard of the present invention includes a first language key combination, a first base plate, a first backlight source, and a light guide plate. The first language key combination includes at least one first key. The first base plate is disposed under the first language button combination, and a perforation arrangement is formed on the first base plate corresponding to the position of the first button. The perforation arrangement includes at least a first hole area and at least a second hole area, and at least a third hole area, the first hole area and the second hole area are opposite to each other, and the third hole area is formed inwardly relative to the second hole area. The first backlight source is disposed under the first base plate and used to provide light. The light guide plate is suitable for the backlight keyboard and a second backlight keyboard. The second backlight keyboard includes a second language key combination, a second base plate, and a second backlight source. The second language key combination includes the second language key combination and the second backlight light source. At least one second button with the same key size, the second base plate is disposed under the second language button combination, the second base plate is formed with the hole configuration at the position corresponding to the second button, and the second backlight source is disposed on Under the second base plate, it is used to provide light; 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, so that the second button corresponding to the second button The hole area and the third hole area corresponding to the first button have a first overlapping area, and make the corresponding 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, and the light guide plate A first mesh dot structure should be formed in the first hole area, a second mesh dot structure should be formed in the second hole area, and the area corresponding to the third hole area except the first overlapping area and the second overlapping area should be at least A third dot structure is partially formed 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 the dot density of the first dot structure and smaller than the dot density of the second dot structure.

In this way, even if the keys in different language key combinations have different multiples of key sizes and are relatively laterally offset, the present invention can still produce the light guide effect of the light guide plate being applicable to backlight keyboards of different languages at the same time, thereby It effectively solves the problem mentioned in the previous technology that the light guide plates used in backlight keyboards of different languages cannot be shared, thereby reducing the manufacturing cost of the light guide plate required for the backlight keyboard.

The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

1: The first backlit keyboard

10:Light guide plate

12: First language button combination

14:First base plate

16:First backlight source

18, 20: first button

100: Second backlit keyboard

102: Second language key combination

104: Second base plate

106: Second backlight source

108: Second button

200:Third backlit keyboard

202: Third language key combination

204:Third base plate

H1: First hole configuration

h11, h1: first hole area

h12, h2: second hole area

h13:Fifth hole area

h14: first middle hole area

H2: Second hole configuration

h21, h3: third hole area

h22: The fourth hole area

h23:Sixth hole area

h24: Second middle hole area

H: hole configuration

h4: middle hole area

r1, r1’, r1”: first overlapping area

r2, r2’, r2”: second overlapping area

r3: The third overlapping area

rc, rc’: middle overlapping area

rc1: first middle overlapping area

rc2: second middle overlapping area

d1: First network structure

d2: Second network structure

d3: The third network structure

Figure 1 is a partially enlarged top view of a first backlit keyboard according to an embodiment of the present invention.

Figure 2 is a cross-sectional exploded view of the first backlight keyboard of Figure 1 along the section line I-I.

Figure 3 is a partially enlarged top view of a second backlit keyboard according to an embodiment of the present invention.

Figure 4 is an exploded cross-sectional view of the second backlight keyboard of Figure 3 along the section line II-II.

Figure 5 is a schematic diagram of the overlap of the first hole arrangement of the first base plate corresponding to the first button in Figure 1 and the second hole arrangement of the second base plate corresponding to the second button in Figure 3.

Figure 6 is a schematic diagram of the overlap of the first hole arrangement of the first base plate corresponding to the first button in Figure 1 and the second hole arrangement of the second base plate corresponding to the second button in Figure 3.

Figure 7 is an overlapping schematic diagram of the hole arrangement of the first base plate corresponding to the first button in Figure 1 and the hole arrangement of the second base plate corresponding to the second button in Figure 3.

Figure 8 is a partially enlarged top view of a third backlit keyboard according to an embodiment of the present invention.

Please refer to Figures 1 to 4. Figure 1 is a partially enlarged top view of the first backlit keyboard 1 according to an embodiment of the present invention. Figure 2 is a cross-section of the first backlit keyboard 1 in Figure 1. An exploded schematic cross-sectional view of line I-I. Figure 3 is a partially enlarged top view of the second backlight keyboard 100 according to an embodiment of the present invention. Figure 4 is a section line II- of the second backlight keyboard 100 of Figure 3. Ⅱ is a cross-sectional exploded diagram, in which in order to clearly show the corresponding positional relationship between the bottom plate holes of the first backlight keyboard 1 and the second backlight keyboard 100 and the keys, the first language key combination 12 is simplified by a dotted line in Figure 1. And the second language button combination 102 is simply represented by a dotted line in Figure 3 .

As shown in Figures 1 to 4, the light guide plate 10 can be used for light guidance of the first backlight keyboard 1 and the second backlight keyboard 100. The first backlight keyboard 1 includes the light guide plate 10, the first language key combination 12, The first base plate 14, and the first backlight source 16 (preferably, but not limited to, a light emitting diode), the first language key combination 12 includes first keys 18, 20 with different multiple key sizes (in Figure 1 shows five first buttons 18 with 1 times the key size and one first button 20 with 0.88 times the key size, but is not limited thereto), the first base plate 14 is arranged on the first language button combination 12 Below, the first backlight source 16 is disposed under the first base plate 14 to provide the light required for the key symbols of the first backlight keyboard 1 to illuminate. The second backlight keyboard 100 includes a second language key combination 102 and a second base plate 104 , and the second backlight source 106 (preferably, but not limited to, a light emitting diode), the second language key combination 102 includes at least one second key 108 with the same multiple key size (in Figure 3 Display six (but not limited to)), the second base plate 104 is disposed under the second language key combination 102, and the second backlight source 106 is disposed under the second base plate 104 to provide keys of the second backlight keyboard 100 The light required for the symbol to glow. In this way, as shown in FIGS. 2 and 4 , through the arrangement of the light guide plate 10 disposed under the first base plate 14 , the light generated by the first backlight source 16 is The light can pass through the first bottom plate 14 and be incident on the first language button assembly 12, and through the arrangement of the light guide plate 10 disposed under the second bottom plate 104, the light generated by the second backlight source 106 can pass through the second backlight source 106. The base plate 104 is incident on the second language key combination 102, thereby causing the symbols on the upper surfaces of the first language key combination 12 and the second language key combination 102 to produce a luminous effect.

The following is an example of the key configuration of the first language key combination 12 corresponding to the British language and the key configuration of the second language key combination 102 corresponding to the Japanese language. For a detailed description of the dot structure design of the light guide plate 10, please refer to Figure 1. Figure 3, and Figure 5. Figure 5 shows the first hole arrangement H1 of the first base plate 14 in Figure 1 corresponding to the first button 18, and the second base plate 104 in Figure 3 corresponding to the second hole arrangement of the second button 108. Schematic diagram of overlapping holes with hole configuration H2. In order to clearly show the corresponding positional relationship between the hole configuration and the keys, the first button 18 and the second button 108 are simplified as dotted lines in Figure 5(a), and The symbols on the upper surfaces of the first button 18 and the second button 108 are represented by thick black lines in Figure 5(a).

As can be seen from Figures 1, 3 and 5(a), the first button 18 in the first language button combination 12 can be a 1x key (can be regarded as the first size, as shown in Figures 1 and 5 ( As shown in a), the first button 18 with symbols _ and -, the second button 108 in the second language button combination 102 can be a 0.88 times button (can be regarded as the second size, as shown in Figure 3 and Figure 5 ( a) As shown in the second button 108 with symbols =, -, the first bottom plate 14 is formed with a first hole configuration H1 at a position corresponding to the first button 18, and the first hole configuration H1 includes first holes opposite to each other. In the area h11 and the second hole area h12, the second bottom plate 104 is formed with a second hole arrangement H2 corresponding to the position of the second button 108. The second hole arrangement H2 includes a third hole area h21 and a fourth hole area h22 that are opposite to each other. .

It can be seen from Figure 1, Figure 3, Figure 5(b) and Figure 5(c) that the position of the second button 108 on the second backlight keyboard 100 is relative to the position of the first button 18 on the first backlight keyboard 1. The position is laterally shifted, 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 Figure 5(c), the light guide plate 10 corresponds to the first hole area h11 And the third hole area h21 is formed with a first dot structure d1 (preferably composed of micro-printing or halftone printing, but is not limited to this) and corresponds to the second hole area h12 and The fourth hole area h22 is formed with a second dot structure d2 at least in the area other than the first overlapping area r1 (preferably composed of micro-printing or dot printing, but not limited to this), and the first dot structure d1 The dot density is smaller than the dot density of the second dot structure d2. That is to say, the position of the light guide plate 10 corresponding to the first overlapping area r1 in the first hole area h11 forms the first dot structure d1 with a lower dot density. (In practical applications, as can be seen from Figure 5(c), the first dot structure d1 can also be further formed on the light guide plate 10 corresponding to the fourth hole area h22 adjacent to the first overlapping area r1, but not Subject to this limitation), the problem of over-brightness of symbols at the positions corresponding to the first overlapping area r1 on the first button 18 and the second button 108 is avoided. In this way, no matter whether the light guide plate 10 is disposed in the first backlight keyboard 1 having the configuration of the first language key combination 12 or in the second backlight keyboard 100 having the configuration of the second language key combination 102, the The light emitted by one backlight source 16 and the second backlight source 106 can pass through the configuration of the first dot structure d1 and the second dot structure d2 as shown in Figure 5(c), and be incident on the first button 18 more uniformly. Corresponding to the positions of the first hole area h11 and the second hole area h12 and the second button 108 corresponding to the positions of the third hole area h21 and the fourth hole area h22, thereby generating corresponding symbols on the first button 18 and the second button 108 Uniform and consistent luminous effect.

In practical applications, it can be seen from Figure 5(a) and Figure 5(b) that the first hole configuration H1 may further include a fifth hole area h13 formed inward relative to the second hole area h12. The hole configuration H2 may further include a sixth hole area h23 formed inwardly relative to the fourth hole area h22. The position of the second button 108 on the second backlight keyboard 100 is relative to the position of the first button 18 on the first backlight keyboard 1. Laterally offset, the fourth hole area h22 and the fifth hole area h13 can have a second overlapping area r2, wherein the light guide plate 10 is formed with a third dot structure d3 corresponding to the fifth hole area h13 and the sixth hole area h23 ( Preferably, it is composed of micro-printing or dot printing, but is not limited thereto) and the second dot structure is at least partially formed in the area corresponding to the fourth hole area h22 except the first overlapping area r1 and the second overlapping area r2. d2. The dot density of the third dot structure d3 is greater than the dot density of the first dot structure d1 and smaller than the dot density of the second dot structure d2. That is to say, the position of the light guide plate 10 corresponding to the second overlapping area r2 is formed with The dot density of the third dot structure d3 is lower than that of the second dot structure d2, so that This avoids the problem of over-brightness of symbols at positions corresponding to the second overlapping area r2 on the first button 18 and the second button 108 . In this way, the light emitted by the first backlight source 16 and the second backlight source 106 can be more uniformly incident on the first button 18 corresponding to the fifth hole area h13 and the second button 108 corresponding to the sixth hole through the above configuration. The position of area h23 is thereby generated to produce a lighting effect with uniform brightness of the corresponding symbols on the first button 18 and the second button 108 .

In addition, it can be seen from Figure 5(a) and Figure 5(b) that the first hole configuration H1 may further include a first middle hole area h14, and the second hole configuration H2 may further include a second middle hole. In area h24, the position of the second key 108 on the second backlight keyboard 100 is laterally offset relative to the position of the first key 18 on the first backlight keyboard 1, so that the second middle hole area h24 and the first hole area h11 have a middle intersection. Overlapping area rc, where the light guide plate 10 corresponds to the first middle hole area h14 and the second middle hole area h24, except for the middle overlapping area rc, at least partially formed with a second dot structure d2 (in practical applications, from the fifth As shown in Figure (c), a first dot structure d1 can also be further formed on the light guide plate 10 corresponding to the second middle hole area h24 and adjacent to the middle overlapping area rc, but is not limited to this), that is to say, The position of the light guide plate 10 corresponding to the middle overlapping area rc located in the first hole area h11 forms a first dot structure d1 with a lower dot density, thereby avoiding the corresponding middle overlapping area on the first button 18 and the second button 108 There is a problem with the symbol being too bright at the position of rc. In this way, the light emitted by the first backlight source 16 and the second backlight source 106 can be more uniformly incident on the first button 18 corresponding to the first middle hole area h14 and the second button 108 corresponding to the second through the above configuration. The position of the middle hole area h24 produces a luminous effect with uniform brightness of the corresponding symbols on the first button 18 and the second button 108 .

It should be noted that as the lateral offset of the position of the second button 108 on the second backlit keyboard 100 relative to the position of the first button 18 on the first backlit keyboard 1 is different, the corresponding dots on the light guide plate 10 Structural design will also vary. In short, please refer to Figures 1, 3, and 6. Figure 6 shows the first hole configuration H1 of the first bottom plate 14 of Figure 1 corresponding to the first button 18 and the second hole configuration H1 of Figure 3. A schematic diagram of the overlapping holes of the second hole configuration H2 of the base plate 104 corresponding to the second button 108. In order to clearly show shows the corresponding positional relationship between the hole configuration and the keys. The first key 18 and the second key 108 are simplified by dotted lines in Figure 6(a), and the symbols on the upper surfaces of the first key 18 and the second key 108 are at In Figure 6(a), it is represented by a thick black line.

It can be seen from Figure 1, Figure 3, Figure 6 (a) and Figure 6 (b) that the first button 18 in the first language button combination 12 can be a 1x key (as shown in Figures 1 and 6 The first button 18 with symbols + and = shown in (a)), the second button 108 in the second language button combination 102 can be a 0.88 times button (as shown in Figure 3 and Figure 6 (a) Second keys 108 with symbols ~, ^), the position of the second key 108 on the second backlight keyboard 100 is laterally offset relative to the position of the first key 18 on the first backlight keyboard 1, so that the fourth hole area h22 and The first hole area h11 may have a first overlapping area r1'. The light guide plate 10 is formed with a first mesh structure d1 corresponding to the first hole area h11 and the third hole area h21 and corresponding to the second hole area h12 and the fourth hole area h22. At least the second dot structure d2 is formed in the area except the first overlapping area r1' (as shown in FIG. 6(c)). That is to say, the light guide plate 10 corresponds to the first intersection located in the first hole area h11. The position of the overlapping area r1' forms a first dot structure d1 with a lower dot density, thereby avoiding the over-brightness problem of symbols at the positions corresponding to the first overlapping area r1' on the first button 18 and the second button 108.

In addition, as shown in Figure 6(b), the fourth hole area h22 and the fifth hole area h13 may have a second overlapping area r2', and the sixth hole area h23 and the second hole area h12 may have a third intersection area. In the overlapping area r3, the second intermediate hole area h24 and the first hole area h11 have an intermediate overlapping area rc'. In this embodiment, the light guide plate 10 may be formed with a second dot structure d2 corresponding to the second hole area h12 and the fourth hole area h22 except for the first overlapping area r1 ′ and the second overlapping area r2 ′. The light plate 10 is formed with a second dot structure d2 corresponding to the first middle hole area h14 and the second middle hole area h24 except the middle overlapping area rc'. That is to say, the light guide plate 10 is corresponding to the second overlapping area r2'. The position is formed with a third dot structure d3 whose dot density is lower than the second dot structure d2. The position of the light guide plate 10 corresponding to the middle overlapping area rc' located in the first hole area h11 is formed with a lower dot density. A dot structure d1 is used to avoid the over-brightness problem of symbols at the positions corresponding to the second overlapping area r2' and the position corresponding to the middle overlapping area rc' on the first button 18 and the second button 108.

In addition, the light guide plate 10 can be at least partially formed with a third dot structure d3 in the area corresponding to the fifth hole area h13 and the sixth hole area h23 except the third overlapping area r3. More specifically, in practical applications, the third dot structure d3 is formed. As shown in Figure (c), it is preferable not to form a dot structure in the light guide plate 10 corresponding to the sixth hole area h23 and adjacent to the third overlapping area r3, but only to form the third overlapping area r3 in the position corresponding to the third overlapping area r3. The two-dot structure d2 is used to avoid the problem of over-brightness of symbols at the position corresponding to the sixth hole area h23 on the second button 108.

In this way, under the above-mentioned key offset configuration as shown in FIG. 6(b), no matter whether the light guide plate 10 is disposed in the first backlight keyboard 1 with the configuration of the first language key combination 12, or is disposed in In the second backlight keyboard 100 with the configuration of the second language key combination 102, the light emitted by the first backlight source 16 and the second backlight source 106 can be more uniformly incident on the first key 18 corresponding to the first break through the above configuration. The position of the hole configuration H1 and the second button 108 correspond to the position of the second hole configuration H2, thereby producing a luminous effect with uniform brightness of the corresponding symbols on the first button 18 and the second button 108.

It is worth mentioning that in a configuration in which 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 corresponding dot structure on the light guide plate 10 The design will also vary. In short, please refer to Figures 1, 3, and 7. Figure 7 shows the hole arrangement H of the first bottom plate 14 in Figure 1 corresponding to the first button 20 and the second bottom plate 104 in Figure 3. A schematic diagram of overlapping holes corresponding to the hole configuration H of the second button 108. In order to clearly show the corresponding position relationship between the hole configuration and the button, the first button 20 and the second button 108 are shown in Figure 7(a) It is simply represented by a dotted line, and the symbols on the upper surface of the first button 20 and the second button 108 are represented by thick black lines in Figure 7 (a).

It can be seen from Figure 1, Figure 3, Figure 7 (a) and Figure 7 (b) that the first button 20 in the first language button combination 12 can be a 0.88 times key (as shown in Figures 1 and 7 (a) shows the first button 20 with the symbols ~ and #, the second button 108 in the second language button combination 102 can be a 0.88 times button (as shown in Figure 3 and Figure 7(a) The second button 108 with symbols }, ], the first base plate 14 corresponding to the position of the first button 20 and the second base plate 104 corresponding to the position of the second button 108 are respectively formed with a perforation arrangement H, and the perforation arrangement H includes a hole arrangement H corresponding to each other. at least one first hole area h1 and at least one second hole area h2, and relative to the The two hole areas h2 form at least one third hole area h3 inward (two are shown in Figure 7(a), but are not limited thereto). The position of the second button 108 on the second backlight keyboard 100 is relative to the second hole area h3. The position of a key 20 on the first backlight keyboard 1 is laterally shifted, so that the second hole area h2 corresponding to the second key 108 and the third hole area h3 corresponding to the first key 20 have a first overlapping area r1″ and such that 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 is formed with 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 a third hole area h3 corresponding to the first overlapping area r1" and the second intersection. The area outside the overlapping area r2″ is at least partially formed with a third dot structure d3. In more detail, in practical applications, as shown in Figure 7(c), the third hole area can be preferably located in the light guide plate 10. There is no dot structure formed in h3 adjacent to the first overlapping area r1” and the second overlapping area r2”, but a second dot structure is only formed at the position corresponding to the first overlapping area r1” and the second overlapping area r2”. d2, so as to avoid the problem of over-brightness of symbols at the positions corresponding to the third hole area h3 on the first button 20 and the second button 108.

In addition, the hole arrangement H may further include at least one middle hole area h4 (two are shown in Figure 7(b), but are not limited thereto), where the second button 108 is opposite to the second backlight keyboard 100. In a configuration in which the position of the first button 20 on the first backlight keyboard 1 is laterally offset, 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 middle 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 middle overlapping area rc2. The light guide plate 10 is at least partially formed with a second dot structure d2 in the area corresponding to the middle hole area h4 except the first middle overlapping area rc1 and the second middle overlapping area rc2. That is to say, the light guide plate 10 is located corresponding to the first hole area. The positions of the first middle overlapping area rc1 and the second middle overlapping area rc2 within h1 form a first dot structure d1 with a lower dot density (in practical applications, it can be seen from Figure 7(c), or A first dot structure d1 is formed on the light guide plate 10 corresponding to the middle hole area h4 and adjacent to the first middle overlapping area rc1 and the second middle overlapping area rc2 (but not limited to this), so as to avoid the first button 20 and There is a symbol over-brightness problem on the second button 108 corresponding to the first middle overlapping area rc1 and the second middle overlapping area rc2.

In this way, under the above-mentioned key offset configuration shown in Figure 7(b), regardless of the light guide The panel 10 is disposed in a first backlight keyboard 1 configured with a first language key combination 12, or in a second backlight keyboard 100 configured with a second language key combination 102, the first backlight source 16 and the second backlight keyboard 100 having a second language key combination 102. The light emitted by the two backlight sources 106 can be more evenly incident on the position of the first button 20 corresponding to the hole configuration H and the position of the second button 108 corresponding to the hole configuration H through the above configuration, thereby generating the first button 20 and the second button 108 . The corresponding symbols on the two buttons 108 have a uniform lighting effect.

To sum up, no matter whether the light guide plate 10 is disposed in the first backlight keyboard 1 with the configuration of the first language key combination 12 or in the second backlight keyboard 100 with the configuration of the second language key combination 102, 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 mesh structure design of the light guide plate 10, thereby generating the first The symbols on the buttons 18, 20 and the second button 108 have a uniform lighting effect. In this way, even if the keys in different language key combinations have different multiples of key sizes and are relatively laterally offset, the present invention can still produce the light guide effect of the light guide plate being applicable to backlight keyboards of different languages at the same time, thereby It effectively solves the problem mentioned in the previous technology that the light guide plates used in backlight keyboards of different languages cannot be shared, thereby reducing the manufacturing cost of the light guide plate required for the backlight keyboard.

In addition, the dot structure design of the light guide plate 10 of the present invention can be applied to the third backlight keyboard 200. Please refer to Figure 1 and Figure 8. Figure 8 shows the third backlight keyboard according to one embodiment of the present invention. 200 is an enlarged top view, in which in order to clearly show the corresponding positional relationship between the holes in the bottom plate of the third backlight keyboard 200 and the keys, the third language key combination 202 is simplified by a dotted line in Figure 8 . As shown in Figures 1 and 8, the third backlight keyboard 200 includes a third language key combination 202, a third base plate 204, and a third backlight source (not shown in the figures, which can preferably be a light-emitting two (but not limited to)), in this embodiment, the third language key combination 202 can better correspond to the key configuration of the American language system, and it can be seen from the comparison of Figure 1 and Figure 8 that the third language key combination 202 The language key combination 202 has a similar 1x key configuration as the first language key combination 12 described above (i.e., the third language key combination 202 also includes five keys with 1x key size). And the first keys 18) with the same arrangement and configuration, therefore, the light guide plate 10 can also be used for light guidance of the third backlight keyboard 200. That is to say, the present invention can further produce a light guide plate 10 that can be used for the first backlight keyboard 200. 1. The functions of the second backlight keyboard 100 and the third backlight keyboard 200 can effectively solve the problem mentioned in the previous technology that the light guide plates used in backlight keyboards of different languages cannot be shared, thereby reducing the need for backlight keyboards to use light guide plates. Manufacturing costs required for manufacturing.

The above are only preferred embodiments of the present invention, and all equivalent changes and modifications made in accordance with the patentable scope of the present invention shall fall within the scope of the present invention.

10:Light guide plate

14:First base plate

18:First button

104: Second base plate

108: Second button

H1: First hole configuration

h11: first hole area

h12: Second hole area

h13:Fifth hole area

h14: first middle hole area

H2: Second hole configuration

h21: The third hole area

h22: The fourth hole area

h23:Sixth hole area

h24: Second middle hole area

r1: first overlapping area

r2: the second overlapping area

rc: middle overlap area

d1: First network structure

d2: Second network structure

d3: The third network structure

Claims (8)

A backlit keyboard, which includes: a first language key combination, which includes at least one first key with a first size; a first bottom plate, which is disposed under the first language key combination, and the first bottom plate corresponds to the first language key combination. A first hole arrangement is formed at the position of the first button, and the first hole arrangement includes a first hole area and a second hole area opposite to each other; a first backlight source is arranged under the first base plate, Used to provide light; and a light guide plate, which is suitable for the backlight keyboard and a second backlight keyboard, the second backlight keyboard includes a second language key combination, a second base plate, and a second backlight source, the second backlight keyboard The two-language button combination includes at least one second button with a second size, the first size is larger than the second size, the second base plate is disposed under the second language button combination, and the second base plate corresponds to the second button A second hole arrangement is formed at the position, the second hole arrangement includes a third hole area and a fourth hole area opposite each other, and the second backlight source is arranged under the second bottom plate to provide light; 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, so that the fourth hole area and the first hole area have a first overlapping area; The light guide plate is disposed under the first bottom plate or the second bottom plate. The light guide plate forms a first dot structure corresponding to the first hole area and the third hole area, and corresponds to the second hole area and the fourth hole area. At least the area other than the first overlapping area is at least partially formed with a second dot structure for guiding light to illuminate the first key and the symbols on the second key; wherein the dot density of the first dot structure is less than The dot density of the second dot structure. The backlit keyboard of claim 1, wherein the first language key combination is a British key combination or an American key combination, and the second language key combination is a Japanese key combination. combine. The backlight keyboard of claim 1, wherein the first hole arrangement further includes a fifth hole area formed inwardly relative to the second hole area, and the second hole arrangement further includes a fifth hole area formed inwardly relative to the fourth hole area. A sixth hole area is formed inwardly of the area; the position of the second key on the second backlight keyboard is laterally offset relative to the position of the first key on the backlight keyboard, so that the fourth hole area and the fifth The hole area has a second overlapping area; wherein, the light guide plate forms a third mesh structure corresponding to the fifth hole area and the sixth hole area, and the fourth hole area corresponds to the first overlapping area and the third hole area. The second dot structure is formed in the area outside the two overlapping areas; the dot density of the third dot structure is greater than the dot density of the first dot structure and smaller than the dot density of the second dot structure. The backlight keyboard of claim 1, wherein the first hole arrangement further includes a fifth hole area formed inwardly relative to the second hole area, and the second hole arrangement further includes a fifth hole area formed inwardly relative to the fourth hole area. A sixth hole area is formed inwardly of the area; the position of the second key on the second backlight keyboard is laterally offset relative to the position of the first key on the backlight keyboard, so that the fourth hole area and the fifth The hole area has a second overlapping area, and the sixth hole area and the second hole area have a third overlapping area; wherein the light guide plate corresponds to the second hole area and the fourth hole area except the The second dot structure is formed in the first overlapping area and the area outside the second overlapping area, and at least partially formed in the area corresponding to the fifth hole area and the sixth hole area except the third overlapping area. A third dot structure; the dot density of the third dot structure is greater than the dot density of the first dot structure and smaller than the dot density of the second dot structure. The backlit keyboard as described in claim 1, 3 or 4, wherein the first hole configuration further includes a first middle hole area, the second hole configuration further includes a second middle hole area; the position of the second key on the second backlight keyboard is laterally offset relative to the position of the first key on the backlight keyboard , so that the second middle hole area and the first hole area have a middle overlapping area; wherein, the light guide plate corresponds to the first middle hole area and the area of the second middle hole area other than the middle overlapping area at least The second dot structure is partially formed. A backlight keyboard, which includes: a first language key combination, which includes at least one first key; a first base plate, which is provided under the first language key combination, and the first base plate is formed corresponding to the position of the first key There is a perforated hole arrangement, the perforated hole arrangement includes at least a first hole area, at least a second hole area, and at least a third hole area, the first hole area and the second hole area are opposite to each other, and the third hole area The area is formed inward relative to the second hole area; a first backlight source is disposed under the first base plate for providing light; and a light guide plate is suitable for the backlight keyboard and a second backlight keyboard, The second backlit keyboard includes a second language key combination, a second bottom panel, and a second backlight source. The second language key combination includes at least one second key that is the same size as the first key. The second bottom panel Disposed under the second language button combination, the second base plate is formed with the hole configuration at the position corresponding to the second button, and the second backlight source is disposed under the second base plate to provide light; the second button The position of the second backlight keyboard is laterally offset relative to the position of the first key on the backlight keyboard, so that the second hole area corresponding to the second key and the third hole area corresponding to the first key have a 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 provided on the first base plate or Under the second base plate, the light guide plate is formed with a first mesh dot structure corresponding to the first hole area, a second mesh dot structure corresponding to the second hole area, and a third hole area corresponding to The area other than the first overlapping area and the second overlapping area is at least partially formed with a third dot structure for guiding light to illuminate the symbols on the first button and the second button; wherein, the third The dot density of the dot structure is greater than the dot density of the first dot structure and smaller than the dot density of the second dot structure. The backlit keyboard of claim 6, wherein the first language key combination is a British key combination or an American key combination, and the second language key combination is a Japanese key combination. The backlight keyboard of claim 6, wherein the hole configuration further includes a middle hole area; the position of the second key on the second backlight keyboard is laterally offset relative to the position of the first key on the backlight keyboard. , so that the middle hole area corresponding to the second button and the first hole area corresponding to the first button have a first middle overlapping area, and such that the first hole area corresponding to the second button and the first hole area corresponding to the first button The middle hole area of a button has a second middle overlapping area; wherein, the light guide plate is at least partially formed with the middle hole area in the area other than the first middle overlapping area and the second middle overlapping area. Second network structure.

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