CN216749663U - Key structure - Google Patents

Abstract

A key structure comprises a conductive bottom plate, a thin film circuit, a dome switch, a light-transmitting keycap, a light-emitting module and a conductive reciprocating piece. The thin film circuit is configured on the conductive bottom plate. The dome switch is configured on the thin film circuit and electrically contacts the thin film circuit. The transparent keycap is arranged above the conductive base plate, and the thin film circuit and the dome switch are arranged between the transparent keycap and the conductive base plate. The light-emitting module is arranged on one side of the transparent keycap facing the conductive base plate and electrically contacts the dome switch. The conductive reciprocating member is arranged between the transparent keycap and the conductive base plate and electrically contacts the light-emitting module and the conductive base plate.

Description

Key structure

Technical Field

The present invention relates to a key structure, and more particularly, to a light-emitting key structure.

Background

The keyboard is used as a common physical input interface and is a standard equipment for notebook computers. With the increasing demands of users on operation experience, a light-emitting keyboard is proposed to satisfy the visual and sensory experiences of users. Generally, a light-emitting keyboard is composed of a keyboard module and a backlight module, and the keyboard module is disposed above the backlight module. Because a gap exists between the shell and the keycap of the keyboard module, light projected from the backlight module to the keycap is easy to leak to the outside through the gap, namely light leakage or halo is generated around the keycap, and further the operation experience of a user is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a button structure helps promoting user's operation to experience.

The utility model provides a key structure, it includes electrically conductive bottom plate, thin film circuit, calotte switch, printing opacity key cap, light emitting module and electrically conductive reciprocating member. The thin film circuit is configured on the conductive base plate and comprises a bearing part and a conductive circuit passing through the bearing part. The dome switch is configured on the bearing part and is provided with a bottom part contacting the bearing part, a top part opposite to the bottom part and a conductive circuit extending from the bottom part to the top part. The conductive traces on the bottom of the dome switch electrically contact the conductive traces of the thin film circuit. The transparent keycap is arranged above the conductive base plate, and the thin film circuit and the dome switch are arranged between the transparent keycap and the conductive base plate. The light-emitting module is arranged on one side of the transparent keycap facing the conductive base plate, wherein the light-emitting module comprises a circuit board and a light-emitting element electrically connected to the circuit board, and the conductive circuit on the top of the dome switch is electrically contacted with the circuit board. The conductive reciprocating member is arranged between the transparent keycap and the conductive base plate, and two opposite ends of the conductive reciprocating member are respectively in electrical contact with the circuit board and the conductive base plate.

The utility model provides another kind of button structure, it includes electrically conductive bottom plate, thin film circuit, electrically conductive dome switch, printing opacity key cap, light emitting module and electrically conductive reciprocating member. The thin film circuit is configured on the conductive bottom plate. The conductive dome switch is configured on the thin film circuit and electrically contacts the thin film circuit. The transparent keycap is arranged above the conductive base plate, and the thin film circuit and the dome switch are arranged between the transparent keycap and the conductive base plate. The light-emitting module is arranged on one side of the transparent keycap facing the conductive base plate, and the conductive dome switch is electrically contacted with the light-emitting module. The conductive reciprocating member is arranged between the transparent keycap and the conductive base plate, and two opposite ends of the conductive reciprocating member are respectively in electrical contact with the light-emitting module and the conductive base plate.

The utility model provides another kind of button structure, it includes electrically conductive bottom plate, thin film circuit, electrically conductive dome switch, printing opacity key cap, patterned circuit, light emitting component and electrically conductive reciprocating member. The thin film circuit is configured on the conductive bottom plate. The conductive dome switch is configured on the thin film circuit and electrically contacts the thin film circuit. The transparent keycap is arranged above the conductive base plate, wherein the thin film circuit and the conductive dome switch are positioned between the transparent keycap and the conductive base plate, and the transparent keycap is provided with a pressing surface and a bottom surface opposite to the pressing surface. The patterned circuit is arranged on the bottom surface, and the conductive dome switch is electrically contacted with the patterned circuit. The light-emitting element is arranged on the bottom surface and is electrically connected with the patterned circuit. The conductive reciprocating member is arranged between the transparent keycap and the conductive base plate, and two opposite ends of the conductive reciprocating member are respectively in electrical contact with the patterned circuit and the conductive base plate.

The utility model provides another kind of button structure, it includes electrically conductive bottom plate, thin film circuit, calotte switch, printing opacity key cap, patterned circuit, light emitting component and electrically conductive reciprocating member. The thin film circuit is configured on the conductive bottom plate. The dome switch is configured on the thin film circuit and is provided with a bottom part contacting the thin film circuit, a top part opposite to the bottom part and a conductive circuit extending from the bottom part to the top part. The conductive traces on the bottom of the dome switch electrically contact the thin film circuit. The transparent keycap is arranged above the conductive base plate, wherein the thin film circuit and the conductive dome switch are positioned between the transparent keycap and the conductive base plate, and the transparent keycap is provided with a pressing surface and a bottom surface opposite to the pressing surface. The patterned circuit is disposed on the bottom surface, and the conductive circuit on the top of the dome switch electrically contacts the patterned circuit. The light-emitting element is arranged on the bottom surface and electrically connected to the patterned circuit. The conductive reciprocating member is arranged between the transparent keycap and the conductive base plate, and two opposite ends of the conductive reciprocating member are respectively in electrical contact with the patterned circuit and the conductive base plate.

Based on the foregoing, the utility model discloses an among the button structure, light emitting module is integrated on the printing opacity key cap to the light that makes light emitting module send can directly pass the printing opacity key cap and throw to the external world, avoids producing light leak or halo around the printing opacity key cap, experiences in order to promote user's operation.

In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic diagram of a key structure according to an embodiment of the present invention.

Fig. 2 is a partial perspective cross-sectional view of the key structure of fig. 1 along the sectional line I-I.

FIG. 3 is a schematic view of the key cap and the light emitting module of FIG. 1 at another viewing angle.

Wherein:

100, a key structure;

110, a conductive base plate;

120, a thin film circuit;

121, a bearing part;

122 conductive lines;

130, a dome switch;

131 is the bottom;

132, a top;

133 conductive lines;

140, a light-transmitting keycap;

141 pressing surface;

142, a bottom surface;

150, a light emitting module;

151 patterning the line;

152 a light emitting element;

153: a circuit board;

153a, a light through hole;

1511, a first conductive contact;

1512, a second conductive contact;

1513, a third conductive contact;

160, conductive reciprocating parts;

I-I, cutting line.

Detailed Description

Fig. 1 is a schematic diagram of a key structure according to an embodiment of the present invention. Fig. 2 is a partial perspective sectional view of the key structure of fig. 1 taken along section line I-I. FIG. 3 is a schematic view of the key cap and the light emitting module of FIG. 1 at another viewing angle. Referring to fig. 1 to fig. 3, in the present embodiment, the key structure 100 may be a light-emitting key structure and may be applied to a keyboard. Specifically, the key structure 100 includes a conductive base plate 110, a thin film circuit 120, a dome switch 130, a transparent key cap 140, a light emitting module 150, and a conductive reciprocating member 160, wherein the transparent key cap 140 is disposed above the conductive base plate 110, and the conductive reciprocating member 160 is disposed between the transparent key cap 140 and the conductive base plate 110.

The conductive reciprocating member 160 may be a scissor structure made of conductive metal or conductive plastic to maintain the stability of the transparent key cap 140 during the lifting process. The light emitting module 150 is integrated on the transparent key cap 140, and the transparent key cap 140 can be transparent as a whole or transparent as a whole, or transparent as a part. Further, the light emitting module 150 is integrated under the transparent keycap 140, so that light emitted by the light emitting module 150 can directly pass through the transparent keycap 140 and be projected to the outside, thereby avoiding light leakage or halo around the transparent keycap 140 and improving the operation experience of the user.

The thin film circuit 120, the dome switch 130, and the light emitting module 150 are disposed on the transparent key cap 140 and the conductive base plate 110, wherein the thin film circuit 120 is disposed on the conductive base plate 110, and the light emitting module 150 is disposed on the transparent key cap 140. The dome switch 130 can support the transparent key cap 140 and the conductive reciprocating member 160, or apply an elastic force to the transparent key cap 140 to drive the transparent key cap 140 and the conductive reciprocating member 160 to lift and reset. In detail, the dome switch 130 may be a conductive dome switch, in one implementation, the dome switch 130 may be made of conductive rubber, and in another implementation, the dome switch 130 may be a rubber dome switch (rubber dome switch) formed with a conductive line.

As shown in fig. 1 to 3, the transparent key cap 140 has a pressing surface 141 and a bottom surface 142 opposite to the pressing surface 141, wherein the bottom surface 142 faces the conductive base 110, and the light emitting module 150 is disposed on the bottom surface 142. In detail, the dome switch 130 is disposed on the thin film circuit 120, and has a bottom portion 131 and a top portion 132 opposite to the bottom portion 131. The bottom 131 of the dome switch 130 electrically contacts the thin film circuit 120, and the top 132 of the dome switch 130 electrically contacts the light emitting module 150. That is, the thin film circuit 120 is electrically connected to the light emitting module 150 through the dome switch 130, and the thin film circuit 120 and the dome switch 130 are used as a power supply path of the light emitting module 150. In addition, one end of the conductive reciprocating member 160 electrically contacts the conductive base plate 110, and the other end of the conductive reciprocating member 160 electrically contacts the light emitting module 150. That is, the light emitting module 150 is electrically connected to the conductive base plate 110 through the conductive reciprocating member 160, and the conductive reciprocating member 160 and the conductive base plate 110 serve as a grounding path of the light emitting module 150.

Further, the key structure 100 integrates the power supply path of the light emitting module 150 into the thin film circuit 120 and the dome switch 130, and integrates the ground path of the light emitting module 150 into the conductive reciprocating member 160 and the conductive base plate 110, so that the key structure has an excellent mechanical integration degree. On the other hand, the current flows from the thin film circuit 120 to the dome switch 130, and then flows from the dome switch 130 to the light emitting module 150, so that the light emitting module 150 is energized to emit light. Subsequently, the current flows from the light emitting module 150 to the conductive reciprocating member 160, and then flows from the conductive reciprocating member 160 to the conductive base plate 110.

As shown in fig. 2 and fig. 3, in the present embodiment, the dome switch 130 is formed with a conductive trace 133 extending from the bottom 131 to the top 132, and the conductive trace 133 on the bottom 131 of the dome switch 130 electrically contacts the thin film circuit 120. Further, the method is as follows. The thin film circuit 120 includes a carrier 121 and a conductive trace 122 passing through the carrier 121, wherein the dome switch 130 is disposed on the carrier 121, and the bottom 131 contacts the carrier 121. On the other hand, the conductive traces 133 on the bottom 131 of the dome switch 130 electrically contact the conductive traces 122 passing through the carrier 121.

The light emitting module 150 may include a patterned circuit 151 and a light emitting element 152, wherein the light emitting element 152 may be a light emitting diode, a micro light emitting diode or a sub-millimeter light emitting diode, and is electrically connected to the patterned circuit 151. In detail, the conductive trace 133 on the top 132 of the dome switch 130 electrically contacts the patterned trace 151, so that the current can flow from the conductive trace 122 to the conductive trace 133, then from the conductive trace 133 to the patterned trace 151, and then from the patterned trace 151 to the light emitting device 152, so that the light emitting device 152 is powered on to emit light. Subsequently, the current flows from the light emitting element 152 to the patterned circuit 151, then flows from the patterned circuit 151 to the conductive shuttle 160, and then flows from the conductive shuttle 160 to the conductive base plate 110.

That is, a portion of the conductive traces 122, 133 and the patterned traces 151 can be used as a power supply path of the light emitting device 152, and another portion of the patterned traces 151, the conductive shuttle 160 and the conductive base plate 110 can be used as a ground path of the light emitting device 152.

As shown in fig. 2 and 3, on the bottom surface 142 of the transparent key cap 140, the patterned circuit 151 extends from the dome switch 130 to the light emitting element 152, and extends from the light emitting element 152 to the conductive reciprocating member 160. That is, on the bottom surface 142 of the transparent keycap 140, the patterned circuit 151 extends through the dome switch 130, the light emitting element 152 and the conductive shuttle 160. For example, the portion of the patterned circuit 151 contacting the dome switch 130 may be regarded as the starting point of the extending path, and the portion of the patterned circuit 151 contacting the conductive shuttle 160 may be regarded as the ending point of the extending path.

Further, the light emitting module 150 further includes a circuit board 153, and the patterned circuit 151 is a portion of the circuit board 153. The circuit board 153 may be a flexible flat cable and is attached to the bottom surface 142 of the transparent key cap 140. Further, the circuit board 153 has a light through hole 153a, wherein the light-transmitting key cap 140 covers the light through hole 153a, and a part (e.g., a light-emitting surface) of the light-emitting element 152 is located in the light through hole 153a, so as to facilitate light to enter the light-transmitting key cap 140 through the light through hole 153 a.

In other embodiments, the light emitting module is composed of a patterned circuit and a light emitting element, wherein the patterned circuit is directly formed on the bottom surface of the keycap, and the light emitting element is disposed on the bottom surface of the keycap to be electrically connected to the patterned circuit. On the other hand, the patterned circuit may be a transparent conductive circuit or a circuit made of other conductive materials.

As shown in fig. 2 and fig. 3, in the present embodiment, the patterned circuit 151 includes a first conductive contact 1511, a second conductive contact 1512, and a third conductive contact 1513, and the second conductive contact 1512 is located between the first conductive contact 1511 and the third conductive contact 1513. Specifically, the second conductive contact 1512 is connected to the first conductive contact 1511 by a wire, and similarly, the second conductive contact 1512 is connected to the third conductive contact 1513 by another wire. More specifically, the conductive trace 133 on the top 132 of the dome switch 130 electrically contacts the first conductive contact 1511, and the light emitting element 152 is electrically connected to the second conductive contact 1512 by flip-chip bonding. In addition, the conductive shuttle 160 electrically contacts the third conductive contact 1513.

To sum up, the utility model discloses an among the button structure, light emitting module is integrated on the printing opacity key cap to the light that makes light emitting module send can directly pass the printing opacity key cap and throw to the external world, avoids producing light leak or halo around the printing opacity key cap, with promotion user's operation experience. On the other hand, the conductive path is composed of a thin film circuit, a dome switch, a light emitting module, a conductive reciprocating member and a conductive base plate, wherein the thin film circuit is electrically conducted to the light emitting module through the dome switch, and the light emitting module is electrically conducted to the conductive base plate through the conductive reciprocating member. Further, the utility model discloses a button structure is integrated in thin film circuit and dome switch with light emitting module's power supply route to integrate light emitting module's ground connection route in electrically conductive reciprocating member and electrically conductive bottom plate, so have splendid mechanism integration degree.

Although the present invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. A key structure, comprising:

a conductive chassis;

the thin film circuit is configured on the conductive bottom plate and comprises a bearing part and a conductive circuit passing through the bearing part;

a dome switch disposed on the carrying portion and having a bottom contacting the carrying portion, a top opposite to the bottom, and a conductive trace extending from the bottom to the top, the conductive trace on the bottom of the dome switch electrically contacting the conductive trace of the thin film circuit;

the transparent keycap is arranged above the conductive base plate, and the thin film circuit and the dome switch are positioned between the transparent keycap and the conductive base plate;

the light-emitting module is arranged on one side of the transparent keycap facing the conductive base plate, wherein the light-emitting module comprises a circuit board and a light-emitting element electrically connected with the circuit board, and the conductive circuit on the top of the dome switch is electrically contacted with the circuit board; and

and the conductive reciprocating piece is arranged between the transparent keycap and the conductive base plate, and two opposite ends of the conductive reciprocating piece are respectively in electrical contact with the circuit board and the conductive base plate.

2. The key structure of claim 1, wherein the transparent key cap has a pressing surface and a bottom surface opposite to the pressing surface, the circuit board is attached to the bottom surface, the circuit board has a light through hole, the transparent key cap covers the light through hole, and a part of the light emitting element is located in the light through hole.

3. The key structure of claim 1, wherein the circuit board has a patterned circuit, and the patterned circuit extends through the dome switch, the light emitting element and the conductive reciprocating member.

4. The key structure of claim 1, wherein the patterned circuit of the circuit board includes a first conductive contact, a second conductive contact and a third conductive contact, and the second conductive contact is located between the first conductive contact and the third conductive contact, the conductive trace on the top of the dome switch electrically contacts the first conductive contact, the light emitting element is electrically connected to the second conductive contact, and the conductive shuttle electrically contacts the third conductive contact.

5. A key structure, comprising:

a conductive chassis;

a thin film circuit disposed on the conductive base plate;

a conductive dome switch disposed on the thin film circuit and electrically contacting the thin film circuit;

the transparent keycap is arranged above the conductive base plate, and the thin film circuit and the conductive dome switch are positioned between the transparent keycap and the conductive base plate;

the light-emitting module is arranged on one side of the transparent keycap facing the conductive base plate, and the conductive dome switch is electrically contacted with the light-emitting module; and

and the conductive reciprocating piece is arranged between the transparent keycap and the conductive base plate, and two opposite ends of the conductive reciprocating piece are respectively in electric contact with the light-emitting module and the conductive base plate.

6. A key structure, comprising:

a conductive chassis;

a thin film circuit disposed on the conductive base plate;

the conductive dome switch is arranged on the thin film circuit and is electrically contacted with the thin film circuit;

a transparent keycap disposed above the conductive base plate, wherein the thin film circuit and the conductive dome switch are disposed between the transparent keycap and the conductive base plate, and the transparent keycap has a pressing surface and a bottom surface opposite to the pressing surface;

a patterned circuit disposed on the bottom surface, wherein the conductive dome switch is electrically contacted with the patterned circuit;

a light emitting element disposed on the bottom surface and electrically connected to the patterned circuit; and

and the conductive reciprocating piece is arranged between the transparent keycap and the conductive base plate, and two opposite ends of the conductive reciprocating piece are respectively in electrical contact with the patterned circuit and the conductive base plate.

7. A key structure, comprising:

a conductive chassis;

a thin film circuit disposed on the conductive base plate;

a dome switch disposed on the thin film circuit and having a bottom contacting the thin film circuit, a top opposite to the bottom, and a conductive trace extending from the bottom to the top, the conductive trace on the bottom of the dome switch electrically contacting the thin film circuit;

a transparent keycap disposed above the conductive base plate, wherein the thin film circuit and the dome switch are disposed between the transparent keycap and the conductive base plate, and the transparent keycap has a pressing surface and a bottom surface opposite to the pressing surface;

a patterned circuit disposed on the bottom surface, wherein the conductive trace on the top of the dome switch electrically contacts the patterned circuit;

a light emitting element disposed on the bottom surface and electrically connected to the patterned circuit; and

and the conductive reciprocating piece is arranged between the transparent keycap and the conductive base plate, and two opposite ends of the conductive reciprocating piece are respectively in electrical contact with the patterned circuit and the conductive base plate.

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