TWI242737B - Light-emitting keyboard structure - Google Patents

Abstract

A light-emitting keyboard structure is disclosed, which comprises a thin-film circuit board assembly, a pushbutton assembly, a supporting plate, a reflective plate and a light-emitting device. The pushbutton assembly is installed on the thin-film circuit board assembly. The supporting plate is installed under the thin-film circuit board assembly, and has a first through hole. The first through host is located under the pushbutton assembly. The reflective plate is installed under the supporting plate. The light-emitting device is installed under the thin-film circuit board, and is electrically connected to the thin-film circuit board assembly. At the same time, the light-emitting device is located in the first through hole, and the light emitted by the light-emitting device is reflected by the reflective plate downward for being diffused into the pushbutton assembly.

Description

1242737 V. Description of the invention (1) Technical field to which the invention belongs The present invention relates to a light-emitting keyboard structure capable of emitting light on a keycap. A kind of light-emitting keyboard structure, especially with regard to a larger area and more uniform light-emitting fruits. In the prior art, in general, in order to be more versatile for keyboards used in computers or mobile phones, light-emitting keyboards have become popular. The trend. Referring to FIG. 1, a conventional illuminated keyboard structure 2 mainly includes a bottom plate 21, a thin-film circuit board assembly 22, an elastic element 23, a keycap, a light source 25, and a support plate 26. The support plate 26 is disposed between the bottom plate 21 and the thin film circuit board assembly 22, and the light source 25 is disposed on the thin circuit board assembly 22. The light emitted from the light source 25 can cause the keycap 24 to emit light. However, as shown in FIG. 1, since the light source 25 is disposed on the thin-film circuit board assembly 22, the phenomenon of uneven light emission will be generated on the keycap 24, and the light emission effect of the keycap 24 will be generated. It is greatly reduced. In other words, the luminous effect that can be seen on the keycap 24 is not uniform, and the luminous area of the keycap 24 is limited to a small area, so the user's visual experience is large. discount. In view of this, the object of the present invention is to provide an improved luminous key | disc structure ', which is not only uniform in luminous effect, but also the luminous area on the keycap can be enlarged. Summary of the Invention

1242737 V. Description of the invention (2) The present invention basically adopts the features detailed below in order to solve the above problems. That is, the present invention includes a thin-film circuit board assembly; / a key assembly provided on the thin-film circuit board assembly; a support plate provided under the thin-film circuit board assembly, and having a first A through-hole, wherein the first through-hole is located below the key assembly; a reflective plate is disposed under the branch floor; and a light-emitting element is disposed under the thin-film circuit board assembly and is electrically conductive Connected to the thin film circuit board assembly, wherein the light emitting element is located in the first through hole, and the light emitted by the light emitting element is diffused downward into the key assembly through the reflection of the reflecting plate . Meanwhile, according to the light-emitting keyboard structure of the present invention, it further includes a first diffusion sheet disposed between the thin-film circuit board assembly and the key assembly. In the present invention, the key assembly has a keycap and an elastic member. The elastic member is disposed under the keycap and has a protruding portion. In the present invention, the illuminated keyboard structure further includes a The first diffusion sheet is disposed between the thin film circuit board assembly and the elastic member, and has a second through hole corresponding to the protruding portion of the elastic member. ^ In the present invention, the illuminated keyboard structure further includes a second diffusion sheet disposed between the thin-film circuit board assembly and the support plate. May Also in the present invention, the light-emitting element is a light-emitting diode (LED). Also produced in the present invention. The thin-film circuit board assembly is made of a translucent material

1242737 V. Send sS on the circuit board of the present invention, a PI circuit board system / double system is located on the first-film and under the board of the invention. Under the present invention. Below the board of the invention. In the present invention, the circuit board further includes a portion, the first metal and the first metal connection portion. In the present invention, in the present invention, in the present invention, in the present invention, in the present invention, in the present invention, and in the present invention, the thin film circuit board assembly further has a first thin film element and a second thin film circuit board. Above the first thin film second thin film circuit board, and the spacer element is between the circuit board and the second thin film circuit board. "The light-emitting element is provided in the first thin-film circuit" "The light-emitting element is provided in the spacer element" The far-light-emitting element is provided in the second thin-film circuit 'The first thin-film circuit board and the second The thin film electrical first metal connection portion and a second metal connection connection portion are opposite to the second metal connection portion, and the portions are spaced at a predetermined distance from the second metal connection. The first thin film circuit board is a diffusion sheet, the second thin film circuit board is a diffusion sheet, and the spacer element is a diffusion sheet. ’The support slab is made of metal. ’The support plate is made of plastic. ’The support plate is made of light-guiding plastic. The surface of the reflecting plate is coated with. In the present invention, the key assembly further has a reflective material and suction holes.

0798-10176TWF (Nl); C03043; hawdong.ptd Page 7 1242737 ------------ ---__ 'V. Description of the invention ⑷'--Also in the present invention, a The reflective element is disposed in the first through hole. In order to make the above-mentioned objects, features, and advantages of the present invention more comprehensible, a detailed description is given below with reference to preferred embodiments and accompanying drawings. Embodiments The preferred embodiments of the present invention will be described with reference to the drawings. The first embodiment: referring to FIG. 2, the light-emitting keyboard structure of this embodiment includes a thin-film circuit board assembly 1 1 0, a key assembly 1 2 0, a support plate 1 3 0, and a reflection. The plate 1 4 0 and a light emitting element 5 5. As shown in FIG. 2, the thin-film circuit board assembly is a transparent structure, and may further have a first thin-film circuit board, a spacer element, and a second thin film. Circuit board 113. The first thin film circuit board in is located on the second thin film circuit board 113, and the spacer element 2 is located between the first thin film circuit board lu and the second thin film circuit board 113. This Γ Γϊΐ! The circuit board 111 and the second thin-film circuit board 113 are also respectively formed as the first office / part 114 and the second metal connection part ⑴. For example, the YW / r metal connection portion 114 is spaced apart from the first metal connection at a predetermined distance.卩 115, so when the key assembly m circuit board m, the first thin film circuit board ⑴ can be contacted; the electric shock 114 contacts the first subordinate on the second thin film circuit board ，, and outputs a corresponding signal. As shown in FIG. 1, the key assembly 120 is disposed on the thin film circuit board assembly 110, and

1242737 V. Description of the invention (5) -------- It has a keycap 121 and an elastic member 122. The elastic member 122 is connected or disposed under the keycap 21, and further has a protruding portion 123. When the key assembly 120 is pressed downward, the protruding portion 123 of the elastic member 122 will press the first thin-film circuit board 111, so that the first metal connection portion 114 on the first thin-film circuit board 1n contacts the second thin-film circuit. The second metal connection part 1 15 on the board 113 outputs a corresponding signal. The branch floor 130 is disposed below the thin-film circuit board assembly 1 10 and has a first through hole 131, which is located below the center of the key assembly 120. In addition, the supporting plate 130 may be made of metal, plastic, or light-guiding plastic. 0 Reflective plate 1 4 0 is set under the supporting floor 1300. At the same time, a layer of reflective material (not shown) can be coated on the surface of the reflective plate I 4 0 to further increase its reflection effect. The light emitting element 150 is disposed below the second thin film circuit board 113 of the thin film circuit board assembly 11 and is electrically connected to the second thin film circuit board II 3 (or the thin film circuit board assembly 11), and The light emitting element 501 is located in the first through hole 131 of the support plate 130. In this embodiment, the light emitting element 150 may be a light emitting diode (LED) or other forms of light emitting devices. When the light-emitting element 150 emits light downward, the light will be reflected by the reflection plate 1 4 0 below it, and then diffuse upward into the key assembly 1 2 0. It is worth noting that because the light emitted by the light-emitting element 150 is reflected by the reflection plate 140, the distance traveled by the light will become longer, and the light will be scattered due to the reflection at different reflection angles. Therefore, the luminous area on the keycap 1 2 1 of the key assembly 1 2 0 will be enlarged and the luminous effect will be more uniform.

0798-10176TWF (N1); C03043; hawdong.ptd page 9 1242737

In addition, in this embodiment, the first thin film circuit board n, the spacer element 1 12 and the second thin film circuit board 3 may also be in the form of a diffusion sheet to further enhance the effect of light diffusion. Furthermore, a breathing hole (not shown) may be provided above the key assembly 1 2 0, so that when the key cap 121 is pressed down, the air inside the key cap 121 can be smoothly discharged. 0 The second embodiment is implemented in this embodiment. In the example, the same components as those in the first embodiment are marked with the same symbols. Please refer to FIG. 3, the light-emitting keyboard structure of this embodiment is mainly composed of a thin-film circuit board assembly 110, a key assembly 1220, a floor board 130, and a reflection board 140. , A light emitting element 150 and a first diffusion sheet 160. The difference between this example and the second example is that the illuminated keyboard structure 1 0 0 ′ has an additional first diffusion sheet 160 to further enhance the light diffusion effect. As shown in FIG. 3, the first diffusion sheet 160 is disposed between the thin-film circuit board assembly 110 and the key member 12 2 of the elastic member 12 2. At the same time, the first diffusion sheet 160 has a second through hole 161, and the position of the second through hole 161 is a position corresponding to the protruding portion 1 2 3 of the elastic member 1 2 2. In particular, the purpose of providing the second through hole 161 on the first diffusion sheet 160 is mainly to make the protruding portion of the elastic member 1 2 2 when the keycap 1 2 1 of the key assembly 1 2 0 is pressed down. 1 2 3 The first thin-film circuit board can be easily pressed against the thin-film circuit board assembly 11 〇

0798-10176TWF (N1); C02043; hawdong.pt d p.10 1242737 V. Description of the invention (7) 1 1 1 makes the first thin-film circuit board iu contact the second thin-film metal on the second thin-film circuit board 113 The / connecting section 114 receives a corresponding signal. The younger-metal connection part U5 is output. As for the structure and characteristics of other elements of this embodiment are the same ', so as to make the content of the description of this case easier, the repeated description is omitted. Do not see the same. When the I light element 150 emits light downward, the line will be reflected by the reflection plate 140 below it, and then diffused upward into the key assembly 120. It is worth noting that, since the light emitted by the light-emitting element 15 is reflected by the reflection plate 140, the distance traveled by the light will become longer, and the reflection of light at different reflection angles will cause the phenomenon of light scattering, so that The light emitting area on the keycap 1 2 1 of the key assembly 1 2 0 is further enlarged and the light emitting effect is more uniform. Similarly, in this embodiment, the first thin film circuit board u, the spacer element 112, and the second thin film circuit board 113 may also be in the form of a diffusion sheet to further enhance the effect of light diffusion. Similarly, there may be a breathing hole (not shown) above the key assembly 1 2 0, so that when the key cap 1 2 1 is pressed down, the air in the key cap 1 2 1 can be exhausted smoothly. In this embodiment, the same components as those in the first embodiment are marked with the same symbols. Please refer to FIG. 4. The structure of the illuminated keyboard 100 in this embodiment is mainly composed of

0798-10176TWF (N1); C03043; hawdong.ptd Page 11 1242737 V. Description of the invention (8) Includes a thin film circuit board assembly 11 〇, a key assembly 丨 2 〇, a support plate 1 3 0, a reflection The plate 1 40, a light-emitting element i5 0, and a second diffusion sheet 170 °. The biggest difference between this embodiment and the first embodiment is that the light-emitting keyboard structure 100 '' has a second diffusion sheet 170, which is mainly It is used to enhance the overall intensity of the illuminated keyboard structure 100 ″ and to further enhance the light diffusion effect. As shown in FIG. 4, the second diffusion sheet 170 is disposed between the thin film circuit board assembly 110 and the support plate 130, and the light emitting element 150 is disposed below the second diffusion sheet 170.

As for the structure or features of the other elements of this embodiment are the same as those of the first embodiment, in order to make the content of the description of this case clearer and easier to understand, duplicate descriptions are omitted here. Similarly, when the light emitting element 50 emits light downward, the light will be reflected by the reflection plate 140 below it, and then diffused upward into the key assembly 120. It is worth noting that since the light emitted by the light emitting element 15 is reflected by the reflecting plate 140, the distance traveled by the light will become longer, and the reflection of different reflection angles will cause the phenomenon of light scattering, so The light emitting area on the keycap 121 of the key assembly 120 is further enlarged and the light emitting effect is more uniform.

Similarly, in this embodiment, the first thin film circuit board 丨 丨 丨, the element 12 and the second thin film circuit board 13 may also be diffuser sheets to further enhance the effect of light diffusion. Similarly, there can be a call on the button assembly 丨 2 0) so that when the keycap 121 is lowered, the air inside it can be smoothed;

1242737 V. Description of Invention (9). Fourth Embodiment In this embodiment, the same components as those in the first embodiment are marked with the same symbols. Please refer to FIG. 5. The illuminated keyboard structure 100 in this embodiment mainly includes a thin film circuit board assembly 1 1 0, a key assembly 1 2 0, a support plate 1 3 0 ', and a reflection plate. 1 4 0 and a light emitting element 1 5 0. The biggest difference between this embodiment and the first embodiment is the difference in the structure of the support plate 130 of the illuminated keyboard structure 100 '' '. As shown in FIG. 5, the first through hole 131 'of the support plate 130' is no longer located below the center of the key assembly 120, but is offset from the center of the key assembly 丨 2 0 by a predetermined distance. However, the light emitting element 150 is still disposed below the second thin film circuit board 丨 3 of the thin film circuit board assembly 11 and is still electrically connected to the second thin film circuit board 11 3 (or the thin film circuit board assembly In the meantime, the light emitting element 150 is still located in the first through hole 131 ′ of the support plate 130 ′. As for the structure or features of the other elements of this embodiment are the same as those of the first embodiment, in order to make the content of the description of this case clearer and easier to understand, duplicate descriptions are omitted here. Similarly, when the light-emitting element 150 emits light downward, the light will be reflected by the reflection plate 140 below it, and then diffuse upwards into the key assembly 1220. It is worth noting that because the light emitted by the light-emitting element 150 is reflected by the reflecting plate 140, the distance traveled by the light will become longer, and the reflection of different reflection angles will cause the phenomenon of light scattering. therefore

0798-10176TWF (N1); C03043; hawdong.ptd Page 13 1242737 V. Description of the invention (10)-Will make the light emitting area on the keycap 1 2 1 of the key assembly 1 2 0 more enlarged and the lighting effect more Evenly.

In this embodiment, even if the first through hole 丨 3 丨 of the support plate 1 3 0 ′ or the light emitting element 1 50 is no longer located below the center of the key assembly 1 2 0, the key cap X 1 2 1 Its luminous area and its luminous effect will not be greatly affected. “Similarly” In this embodiment, the first thin film circuit board 1 1 1, the spacer element 112 and the second thin film circuit board 113 may also be in the form of a diffusion sheet to further enhance the effect of light diffusion. Similarly, there may be a breathing hole (not shown) 'above the key assembly 1 2 0 so that when the key cap 1 2 1 is pressed down', the air inside the key cap 1 2 can be smoothly discharged. The fifth embodiment is shown in FIG. 6. The light-emitting keyboard structure 2000 of this embodiment mainly includes a thin-film circuit board assembly 2 1 0, a key assembly 2 2 0, a support plate 23 0, and a reflection plate 240. And a light emitting element 250. The thin film circuit board assembly 2 10 is a transparent structure and has a first thin film circuit board 2 1 1, a spacer element 212 and a second thin film circuit board 213. The key assembly 220 is disposed on the thin-film circuit board assembly 2 1 0, and has a keycap 2 2 1 and a “elastic member 2 2 2. The elastic member 2 2 2 is connected to or disposed on the key cap 2 2 1 It also has a protruding portion 223 below. The supporting plate 230 is disposed below the thin film circuit board assembly 210 and has a first through hole 231. The reflecting plate 240 is disposed below the supporting plate 230.

0798-10176TiVF (Nl); C03043; hawdong. Ptd page 14 1242737 V. Description of the invention (11) The biggest difference between this embodiment and the first embodiment is the difference in the structure of the support floor 230 of the illuminated keyboard structure 200 and The difference in the position of the light emitting element 25Q. As shown in FIG. 6, the first through hole 231 of the support plate 23 is no longer located below the center of the key assembly 220, but is offset from the center of the key assembly 220 by a predetermined distance. More specifically, the light emitting element 250 is disposed under the thin film circuit board 211-the thin film circuit board 211, and is electrically connected to the first thin film circuit board 211 (or the thin film circuit board assembly 210). At the same time, the light emitting element 250 is located above the first through hole 231 of the supporting floor 23o. As for other element structures or features of the present embodiment, they are the same as those of the first embodiment. Therefore, in order to make the content of the description in this case clearer and easier to understand, repeated descriptions are omitted here. Similarly, when the light-emitting element 250 emits light downward, the light will be reflected by the reflection plate 240 below it, and then diffuse upward into the key assembly 2 2 0. It is worth noting that because the light emitted by the light-emitting element 250 is reflected by the reflection plate 240, the distance traveled by the light will become longer, and the reflection of light at different reflection angles will cause the phenomenon of light scattering, so it will The light emitting area on the keycap 221 of the key assembly 220 is further enlarged and the light emitting effect is more uniform. In this embodiment, even if the first through hole 231 of the support plate 23 0 or the light-emitting + element 250 is no longer located below the center of the key assembly 22 0, and the light-emitting element 2 50 is disposed in the thin-film circuit board assembly The light emitting area on the keycap 221 and the light emitting effect under the first thin film circuit board 211 that is 2 10 are not greatly affected. Θ

Page 15 of 1242737 ----- 5. Description of the invention (12) 1 In the same way and the first in this / example, the first-thin film circuit board 211, the spacer _ Λ Office of this chapter-thin film circuit board 2U can also be in the form of a diffuser sheet, with a more diffused light effect. Similarly, there may be a breathing hole above the key assembly 22), so that when the keycap 2 2 1 is pushed down 士 Β 士 νΤ ^ ^ βη, the dead head zz i is pushed down, so that it can be made The air inside is smoothly exhausted. Sixth Embodiment In this embodiment, the same elements as those in the first embodiment are marked with the same symbols.

Please refer to FIG. 7. The light-emitting keyboard structure 3 of this embodiment mainly includes a thin-film circuit board assembly 11 0, a key assembly 1 2 0, a floor plate 1 3 0, a reflecting plate 1 4 0, and a Light emitting element 1 50. The biggest difference between this embodiment and the first embodiment is that the light-emitting keyboard structure 300 has one more reflective element 1 3 2, and the reflective element 1 32 is disposed in the first through hole 131 of the support plate 130, and It is located on the reflecting plate 140 to further enhance the light reflection effect.

As for the structure or features of the other elements of this embodiment are the same as those of the first embodiment, in order to make the content of the description of this case clearer and easier to understand, duplicate descriptions are omitted here. Similarly, when the light emitting element 150 emits light downward, the light will be reflected by the reflecting plate 1 40 and the reflecting element 13 2 below it, and then diffuse upwards into the key assembly 120. It is worth noting that ‘because the light emitted by the light-emitting element 150 is reflected by the reflection plate 1 40 and the reflection element 1 32, the light

1242737

V. Description of Invention (13)

The distance traveled by the line will become longer, and due to the reflection of different reflection angles, light will be scattered. Therefore, the light emitting area on the keycap 1 2 1 of the key assembly 12 will be enlarged and the light effect will be enlarged. More uniform. Similarly, in this embodiment, the first thin film circuit board 1, the spacer element 1 12, and the second thin film circuit board 3 may also be in the form of a diffusion sheet to further enhance the effect of light diffusion. Similarly, 'there is a breathing hole (not shown) above the key assembly 丨 2 0' so that when the keycap 1 2 1 is pressed down, the air in the keycap 1 2 1 can be smoothly discharged. Seventh Embodiment In this embodiment, the same components as those in the first and fourth embodiments are marked with the same symbols. Referring to FIG. 8, the light-emitting keyboard structure 4 of this embodiment mainly includes a thin-film circuit board assembly 11 0, a key assembly 12 2 0, a support plate 1 3 0 ′, a reflection plate 1 4 0, and One light-emitting element 1 50. The biggest difference between this embodiment and the fourth embodiment is that the light-emitting keyboard structure 4 00 has one more reflective element 1 3 2 ′. The reflective element 1 2 2 is a first through hole 131 ′ provided in the support plate 130 ′. Among them, it is located above the reflecting plate 14 to further enhance the reflection effect of light. As for the other element structures or features of this embodiment are the same as those of the fourth embodiment, in order to make the content of the description of this case clearer and easier to understand, duplicate descriptions are omitted here. Similarly, when the light emitting element 150 emits light downward, the light first passes through

1242737 V. Description of the invention (14) The reflection plate 1 40 and the reflection element 1 3 2 ′ underneath reflect, and then diffuse upwards into the key assembly 1 2 0. It is worth noting that since the light emitted by the light emitting element 150 passes through the reflecting plate 丨 4 and the reflecting element 1 32, the distance traveled by the light will become longer after reflection, and it will be reflected by different reflection angles. The phenomenon that light is scattered causes the light-emitting area on the keypad 121 of the key assembly 120 to be enlarged and the light-emitting effect to be more uniform. Similarly, in this embodiment, the first thin-film circuit board 1 丨, the interval π member 112, and the second thin-film circuit board 113 may also be in the shape of a diffusion sheet to further enhance the effect of light diffusion. Similarly, there can be-a breathing hole on the key assembly 120 so that when the keycap 121 is pressed down, the air inside it can be smoothed: In particular, the present invention of the private umbrella ## is placed on the key The first thin film of the assembly is not: 疋 can only be limited to the design (such as h ΛΛ π * described in the embodiment below the first and second thin film circuit boards), that is, the present invention 2 First 7 ^ pieces can also be set under the spacer elements of the key assembly, and they can be evenly distributed. , More enlarged, and more luminous effects, although the present invention has limited the hair with a better volume L # ... How to familiarize yourself with this; 'Without departing from the scope of the present invention, the attached patent ^ 3 ornaments will be deemed to be attached'. Therefore, what is defined by the security scope of the present invention shall prevail.

1242737 Brief description of the drawings. Fig. 1 is a schematic cross-sectional view showing a conventional structure of a light-emitting keyboard. Fig. 2 is a cross-sectional schematic view showing a structure of a light-emitting keyboard according to a first embodiment of the present invention. A schematic cross-sectional view of a light-emitting keyboard structure of two embodiments; FIG. 4 is a schematic cross-sectional view of a light-emitting keyboard structure of a third embodiment of the present invention; FIG. 5 is a cross-sectional view of a light-emitting keyboard structure of a fourth embodiment of the present invention Fig. 6 is a schematic sectional view showing the structure of a light-emitting keyboard of a fifth embodiment of the present invention; Fig. 7 is a schematic sectional view showing a structure of a light-emitting keyboard of a sixth embodiment of the present invention; and Fig. 8 It is a schematic sectional view showing a structure of a light-emitting keyboard according to a seventh embodiment of the present invention. Explanation of symbols 2 ~ Knowledge keyboard structure; 2 1 ~ Backplane; 2 2 ~ Film circuit board assembly; 2 3 ~ Elastic element; 24 ~ Keycap; 2 5 ~ Light source; 2 6 ~ Support plate;

0798-10176TWF (N1); C03043; hawdong.ptd Page 19 1242737 The diagram briefly explains 100, 100 ', 100,', 100 '' ', 200, 300, 400 ~ Illuminated keyboard structure; 1 1 0, 2 1 0 ~ thin film circuit board assembly; 111, 2 1 1 ~ first thin film circuit board; 1 1 2, 2 1 2 ~ spacer element; I 1 3, 2 1 3 ~ second thin film circuit board; 114, 214 ~ A metal connecting part; II 5, 2 1 5 to a second metal connecting part; 1 2 0, 2 2 0 to a key assembly; 121, 221 to a keycap; 1 2 2, 2 2 2 to an elastic member; 123, 223 ~ protruding part; 1 3 0, 1 3 0 ', 2 3 0 ~ support plate; 1 3 1, 1 3 Γ, 2 3 1 ~ first through hole; 1 3 2, 1 3 2' ~ reflecting element; 1 40, 24 0 ~ reflecting plate; 150, 250 ~ light emitting element; 160 ~ first diffusion sheet; 1 6 1 ~ second through hole; 170 ~ second diffusion sheet. < 1

0798-10176TWF (N1); C03043; hawdong.ptd page 20

Claims (1)

" 丨 · 1 丨 _ " _1 丨 丨 II ————— 1 6. Scope of patent application 1. A light-emitting keyboard structure 'includes: a thin-film circuit board assembly; a key assembly, which is arranged on the thin-film circuit Above the board assembly; a support plate disposed under the thin film circuit board assembly 'and having a first through hole, wherein the first through hole is located below the key assembly; a reflecting plate provided with Under the support plate; and a light emitting element disposed under the thin film circuit board assembly 'and electrically connected to the thin film circuit board assembly, wherein' the light emitting element is located in the first through hole, And the light emitted by the light emitting element diffuses downward into the key assembly through the reflection of the 4 reflecting plate. 2. The illuminated keyboard structure according to item 1 of the scope of patent application, further comprising a first diffusion sheet disposed between the thin film circuit board assembly and the key assembly. 3. The light-emitting keyboard structure according to item 1 of the scope of patent application, wherein the key assembly further has a keycap and an elastic member, and the elastic member is disposed under the keycap and has a protruding portion. 4 · The light-emitting keyboard structure described in item 3 of the scope of patent application, further comprising a first diffuser sheet disposed between the thin-film circuit board assembly and the elastic member, and having a second through hole corresponding to The protruding part of the elastic member. 5. The light-emitting keyboard structure described in item 1 of the scope of patent application, further comprising a second diffusion sheet 'disposed between the thin-film circuit board assembly and the support plate. 0798-10176TWF (N1); C03043; hawdong.ptd Page 21 1242737 VI. Patent application scope-6 · The light-emitting keyboard structure described in item 1 of the patent scope, wherein the light-emitting element is a light-emitting diode Body (LED). 7. The light-emitting keyboard structure described in item 1 of the scope of patent application, wherein the 'far film circuit board assembly is made of a light-transmitting material. 8. The light-emitting keyboard structure as described in item 丨 of the patent application scope, wherein the thin film circuit board assembly further has a first thin film circuit board, a spacer, and a second thin film circuit board. The board is located on the second thin film circuit board, and the spacer element is located between the first thin film circuit board and the second thin film circuit board. 9. The light-emitting keyboard structure according to item 8 of the scope of patent application, wherein the light-emitting element is disposed under the first thin-film circuit board. I 0 · The light-emitting keyboard structure according to item 8 of the scope of the patent application, wherein 'the light-emitting element is disposed below the spacer element. II. The light-emitting keyboard structure according to item 8 of the scope of patent application, wherein the light-emitting element is disposed under the second thin-film circuit board. 1 2 · The light-emitting keyboard structure described in Item 8 of the declared patent scope, wherein the first thin-film circuit board and the second thin-film circuit board further have a first metal connection portion and a second metal connection portion, respectively. The first metal connecting portion is opposite to the second metal connecting portion, and the first metal connecting portion is spaced apart from the third metal connecting portion by a predetermined distance. 1 3. The light-emitting keyboard structure as described in item $ in the scope of the patent application, wherein 'the -th thin film circuit board is a "diffusion sheet." 14. The light-emitting keyboard structure described in the patent application scope No. 8 wherein the second thin-film circuit board is a "sensitized film." 1242737 VI. Scope of patent application 1 5 · The light-emitting keyboard structure described in item 8 of the scope of patent application The spacer element is a diffusion sheet. 1 6 · Illuminated keyboard structure as described in item 1 of the scope of patent application The support plate is made of metal. 1 7 · Illuminated keyboard structure as described in item 1 of the patent application scope The support plate is made of plastic. 1 8. The light-emitting keyboard structure as described in item 1 of the patent application scope. The support plate is made of light-guiding plastic. 1 9 · Illuminated keyboard structure as described in item 1 of the scope of patent application The surface of the reflective plate is coated with a reflective material. 20. The illuminated keyboard structure as described in item 1 of the scope of patent application. The key assembly has a σ and a hole. 2 1. The light-emitting keyboard structure as described in item 1 of the scope of patent application, and the reflective element is disposed in the / through hole. Zhongzhong Zhongzhong Zhongzhong includes other and more 0798-10176TWF (N1); C03043; hawdong.p t d p.23