CN105070566B - Keyboard structure - Google Patents

Abstract

The invention relates to a keyboard structure, which includes a conductive bottom plate, a key cap, a thin film circuit layer, a light emitting element and a conductive cover. The conductive bottom plate is grounded, the keycap is arranged on the conductive bottom plate, and the keycap can move up and down relative to the conductive bottom plate. The thin film circuit layer is disposed between the conductive bottom plate and the keycap. The light emitting element is arranged on the thin film circuit layer and used for emitting light. The conductive cover is arranged on the film circuit layer and covers the light-emitting element. The conductive cover has a light-transmitting area through which light can reach the keycap. The conductive cover is adjacent to the static discharge part of the conductive base. The conductive cover and the static discharge part form a discharge path through which static electricity can be grounded, thereby preventing static electricity from damaging the light-emitting element or/and electronic components electrically connected to the light-emitting element, such as circuit boards.

Description

keyboard structure

technical field

The present invention relates to a keyboard structure, and in particular to a keyboard structure with a discharge path.

Background technique

The keyboard is easy to receive static electricity from fingers during use. Static electricity will be attracted by the electronic components closest to the keycap, and damage the electronic components and components electrically connected to them, such as circuit boards, etc., thus causing damage to the components. In addition, after the keyboard is completed, static electricity is easily transmitted to the membrane switch layer through the light-emitting element of the keyboard during electrostatic testing, thus causing damage to the membrane switch layer and components electrically connected thereto. Therefore, it is urgent to propose a solution that can discharge static electricity.

Contents of the invention

Therefore, the present invention proposes a keyboard structure, which provides a discharge path, which can guide the static electricity to the ground potential, and avoid damage caused by the static electricity.

To this end, the present invention proposes a keyboard structure, which includes a conductive bottom plate, a static discharge part, a keycap, a thin film circuit layer, a light emitting element, and a conductive cover. The conductive bottom plate is electrically connected to the ground potential, and the static discharge part is connected to the conductive bottom plate; the keycap is arranged on the conductive bottom plate, and the keycap can move up and down relative to the conductive bottom plate; the film circuit layer is arranged on the conductive bottom plate and the key Between the caps; the light-emitting element is arranged on the thin film circuit layer, and the light-emitting element is used to emit light; the conductive cover is arranged on the thin film circuit layer and the conductive cover covers the light-emitting element, and the conductive cover has a transparent The light area, the light passes through the light-transmitting area and reaches the key cap; the conductive cover is adjacent to the static discharge part, and when static electricity occurs outside, the static electricity passes through the conductive cover, the static discharge part and the static discharge in sequence The conductive bottom plate is connected to the ground.

As an optional technical solution, the keyboard structure also includes a keycap support structure, the keycap is combined with the upper end of the keycap support structure, the static discharge part is a bottom plate fixing mechanism, and the lower end of the keycap support structure is connected to the bottom plate A fixing mechanism, through the support structure of the keycap, the keycap can move up and down relative to the conductive bottom plate.

As an optional technical solution, the bottom plate fixing mechanism is a hook-shaped structure, and the tail end of the hook-shaped structure has a tip, and the tip is adjacent to the conductive cover.

As an optional technical solution, the static dredging part has a root and an end, and the outer diameter of the static dredging part is tapered from the root to the end, so that the surface curvature of the end is higher than the surface curvature of the root .

As an optional technical solution, the static discharge part is a balance link, the upper end of the balance link is connected to the keycap, the lower end of the balance link is connected to the conductive bottom plate, and the balance link extends adjacent to the conductive cover body, when the static electricity appears outside, the static electricity passes through the conductive cover, the balance connecting rod and the conductive bottom plate in order to conduct and ground.

As an optional technical solution, the keyboard structure also includes a conductive coating, which is coated on the thin film circuit layer, and the conductive coating extends from a place adjacent to the conductive cover to a place adjacent to the static conduction part; when the external When the static electricity occurs, the static electricity also passes through the conductive coating, the static electricity diverting part and the conductive bottom plate in order to conduct and ground.

In addition, the present invention also proposes a keyboard structure, including a conductive bottom plate, a static discharge part, a film circuit layer, a keycap, a light-emitting element, a cover body, and a conductive coating. The conductive bottom plate is electrically connected to the ground potential; the static discharge part is connected to the conductive bottom plate. The thin-film circuit layer is set on the conductive bottom plate; the keycap is set on the conductive bottom plate, and the keycap can move up and down relative to the conductive bottom plate; the light-emitting element is set on the thin-film circuit layer, and the light-emitting element is used to emit light The cover is arranged on the conductive coating and the cover covers the light-emitting element, the cover has a light-transmitting area, and the light passes through the light-transmitting area to reach the keycap; the conductive coating is arranged on the film circuit In the coating area on the layer, the coating area extends from a place adjacent to the cover to a place adjacent to the static electricity dredging part; wherein, when static electricity occurs outside, the static electricity passes through the conductive coating, the static electricity dredging part in sequence It is connected to the conductive bottom plate and grounded.

As an optional technical solution, the static dissipating part is a balance link, the upper end of the balance link is connected to the keycap, the lower end of the balance link is connected to the conductive bottom plate, and the balance link extends over the conductive coating above and the balance connecting rod is adjacent to the conductive coating, when the static electricity appears outside, the static electricity passes through the conductive coating, the balance connecting rod and the conductive bottom plate in order to conduct and ground.

As an optional technical solution, the keyboard structure also includes a keycap support structure, the keycap is combined with the upper end of the keycap support structure, the static discharge part is a bottom plate fixing mechanism, and the lower end of the keycap support structure is connected to the bottom plate As for the fixing mechanism, the thin film circuit layer has a through hole, and the through hole has a periphery of the through hole, the bottom plate fixing mechanism passes through the through hole and is adjacent to the periphery of the through hole, and the coating area extends to the periphery of the through hole.

As an optional technical solution, the conductive coating is arranged around the cover.

In the keyboard structure of the present invention, when there is static electricity outside, the static electricity can be channeled to the ground terminal through the static electricity drainage part, so as to avoid static electricity from damaging the light-emitting element or/and the electronic components electrically connected to the light-emitting element. , such as circuit boards, etc. The static dissipating part can be (1) a static dissipating part protruding upward from the folded bottom plate (the base plate fixing mechanism), or a static dissipating part (balance link) movably pivotally connected to the base plate.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1A shows a schematic diagram of a partial appearance of a keyboard structure according to an embodiment of the present invention;

Fig. 1B shows the cross-sectional view of the keyboard structure of Fig. 1A along the direction 1B-1B';

FIG. 2A shows a schematic diagram of a partial appearance of a keyboard structure according to another embodiment of the present invention;

Fig. 2B illustrates the sectional view of the keyboard structure of Fig. 2A along direction 2B-2B';

FIG. 3A is a schematic diagram of a partial appearance of a keyboard structure according to another embodiment of the present invention in which the static dissipating part is a balance link;

Fig. 3B illustrates the sectional view of the keyboard structure of Fig. 3A along direction 3B-3B';

FIG. 4A is a schematic diagram of a partial appearance of a keyboard structure according to another embodiment of the present invention in which the static dissipating portion is a balance link;

FIG. 4B is a cross-sectional view of the keyboard structure of FIG. 4A along the direction 4B-4B'.

detailed description

Please refer to FIG. 1A and FIG. 1B. FIG. 1A shows a schematic partial appearance of a keyboard structure 100 according to an embodiment of the present invention, and FIG. 1B shows a cross-sectional view of the keyboard structure 100 in FIG. 1A along the direction 1B-1B'.

The keyboard structure 100 includes a keycap 110 (only shown in FIG. 1B ), a conductive bottom plate 120, a light emitting element 130 (only shown in FIG. 1B ), a conductive cover 140, a thin film circuit layer 150, and a keycap support structure 160 (only shown in FIG. 1B ). shown in FIG. 1B ), encapsulant 170 (only shown in FIG. 1B ), and adhesive layer 180 (only shown in FIG. 1B ). In order to make the relative relationship between the conductive bottom plate 120 and the conductive cover 140 clearer, elements such as the keycap 110 , the light emitting element 130 and the keycap supporting structure 160 are not shown in FIG. 1A .

As shown in FIG. 1B , the keycap 110 is disposed above the conductive bottom plate 120 , and the keycap 110 can move up and down relative to the conductive bottom plate 120 . The conductive bottom plate 120 is electrically connected to the ground potential, so that static electricity can pass through the conductive bottom plate 120 and be connected to the ground. In this way, the thin film circuit layer 150 , the light emitting element 130 and the components (such as a circuit board) electrically connected thereto can be prevented from being damaged by static electricity through different static conduction paths described later.

As shown in FIG. 1B , the light emitting element 130 is disposed on the thin film circuit layer 150 and used to emit light L. As shown in FIG. The conductive cover 140 is disposed on the thin film circuit layer 150 and the conductive cover 140 covers the light emitting element 130 . The conductive cover 140 has a light-transmitting area 140a, so that the light L can pass through the light-transmitting area 140a to reach the keycap 110, and emit light from the light-transmitting area 110a of the keycap 110 to display the pressed state of the keycap 110.

The thin film circuit layer 150 is disposed between the conductive base 120 and the keycap 110 . The above-mentioned conductive bottom plate 120 includes a connected plate body 121 and a static discharge portion 122 . The plate body 121 and the static electricity dissipating portion 122 may be integrally formed structures (such as stamping parts). The thin film circuit layer 150 has a through hole 150 a , and the electrostatic deflector 122 passes through the through hole 150 a from bottom to top and extends to be adjacent to the conductive cover 140 . Here "adjacent" means "contact" or "near but not in contact". Since the static discharge portion 122 is adjacent to the conductive cover 140 , external static electricity is easily discharged from the conductive cover 140 to the static discharge portion 122 , and then grounded through the plate 121 . That is to say, the conductive cover 140 , the static electricity channeling portion 122 and the plate body 121 form a first static electricity channel P1 , so that when static electricity occurs, the static electricity can pass through the first static channel P1 and be grounded.

As shown in FIG. 1A , the electrostatic conduction portion 122 has a root portion 1221 and an end portion 1222 . The outer diameter of the end portion 1222 of the electrostatic diversion portion 122 is smaller than the outer diameter of the root portion 1221, that is, even if the surface curvature of the end portion 1222 of the electrostatic diversion portion 122 is higher than the surface curvature of the root portion 1221, according to the tip discharge principle, the static electricity will be easily released from The conductive cap 140 discharges to the end 1222 with a smaller outer diameter. In another embodiment, the specific structure of the electrostatic deflecting portion 122 may be a hook-shaped structure. The tail end of the hook-shaped structure has a tip, and the tip is adjacent to and extends toward the direction of the conductive cover 140 . In another embodiment, the outer diameter of the electrostatic channeling portion 122 is tapered from the root portion 1221 to the end portion 1222, that is, the surface curvature of the electrostatic channeling portion 122 gradually increases from the root portion 1221 to the end portion 1222, so that the end portion 1222 The surface curvature is higher than that of the root 1221 .

As shown in FIG. 1B , the thin film circuit layer 150 includes an opening 150 b and a plurality of lines 151 , and the plurality of lines 151 are exposed in the opening 150 b. The light emitting element 130 is electrically connected to the plurality of lines 151 through the opening 150b to receive external electric energy.

As shown in FIG. 1B , the keycap supporting structure 160 connects the keycap 110 and the conductive bottom plate 120 . In detail, the keycap 110 can be combined with the upper end of the keycap supporting structure 160, the above-mentioned electrostatic deflector 122 is a bottom plate fixing mechanism, and the lower end of the keycap supporting structure 160 can be connected with the bottom plate fixing mechanism. The keycap supporting structure 160 can lift the keycap 110 so that the keycap 110 can move up and down between the unpressed position and the pressed position. As shown in FIG. 1B , the keycap support structure 160 is, for example, a scissor mechanism.

As shown in FIG. 1B , the encapsulant 170 covers the light emitting element 130 and the opening 150 b to protect the light emitting element 130 . The packaging glue 170 can be light-transmitting glue with fluorescent particles, so that the wavelength of the light L emitted by the light emitting element 130 can be converted. In another embodiment, the encapsulation glue 170 may be light-transmitting glue without fluorescent particles. The adhesive layer 180 is formed between the conductive cover 140 and the thin film circuit layer 150 to bond the conductive cover 140 and the thin film circuit layer 150 .

Please refer to FIG. 2A and FIG. 2B. FIG. 2A shows a schematic partial appearance of a keyboard structure 200 according to another embodiment of the present invention, and FIG. 2B shows a cross-sectional view of the keyboard structure 200 in FIG. 2A along the direction 2B-2B'. To avoid too complicated illustration, the keycap supporting structure 160 is not shown in FIG. 2A .

The keyboard structure 200 includes a keycap 110 , a conductive bottom plate 120 , a light emitting element 130 , a cover 240 , a thin film circuit layer 150 , a keycap support structure 160 , an encapsulant 170 , an adhesive layer 180 and a conductive coating 290 .

Different from the keyboard structure 100, the cover 240 of this embodiment is an insulating cover. In addition, the conductive coating 290 is coated in the coated area of the thin film circuit layer 150, and the coated area extends from adjacent to the cover 240 to adjacent to the through hole 150a of the thin film circuit layer 150, so as to be adjacent to the electrostatic discharge portion 122' , as shown in Figure 2A. The conductive coating 290 is located between the thin film circuit layer 150 and the cover 240 . The cover 240 is disposed on the conductive coating 290 . The adhesive layer 180 is formed between the cover 240 and the conductive coating 290 to bond the cover 240 and the conductive coating 290 . In addition, as shown in FIG. 2A, although the cover 240 is an insulating cover, since the conductive coating 290 is arranged around the entire cover 240, no matter which side of the cover 240 is located, the static electricity close to the cover 240 can pass through. The conductive coating 290 is channeled to the conductive base 120 .

In the present embodiment, as shown in FIG. 2A , the conductive coating 290, the electrostatic dissipating portion 122' and the body 121 form a second electrostatic dissipating path P2. In detail, the through hole 150a' of the thin film circuit layer 150 has a peripheral edge 150a1 of the through hole, the static dissipating part 122' (bottom plate fixing mechanism) has a substantially vertically extending side edge 122'a, and the static dissipating part 122' passes through the through hole 150a ', and the side edge 122'a is adjacent to the peripheral edge 150a1 of the through hole; at the same time, the coated area of the conductive coating 290 extends to the peripheral edge 150a1 of the through hole, so that static electricity can pass through the conductive coating 290 shown in FIG. 2A and the peripheral edge 150a1 of the through hole in sequence. , The second electrostatic conduction path P2 formed by the static conduction portion 122 ′ and the main body 121 leads to the ground terminal.

In another embodiment, the insulating cover 240 in FIG. 2B can also be replaced by a conductive cover 140, so that static electricity can be channeled to the ground terminal through the first static channeling path P1 and the second static channeling path P2 at the same time, so as to increase static electricity channeling Effect.

Please refer to FIG. 3A and FIG. 3B , FIG. 3A shows a partial appearance view of a keyboard structure 300 according to another embodiment of the present invention where the static dissipating part is a balance link, and FIG. 3B shows the keyboard structure 300 of FIG. 3A along the direction 3B- Sectional view of 3B'. To avoid too complicated illustration, the keycap supporting structure 160 is not shown in FIG. 3A .

The keyboard structure 300 includes a keycap 110 , a conductive bottom plate 120 , a light emitting element 130 , a conductive cover 140 , a thin film circuit layer 150 , a keycap support structure 160 , an encapsulant 170 , an adhesive layer 180 and an electrostatic discharge part 395 . The static electricity guiding part 395 in this embodiment is a balance link bar.

The upper end of the static deflector 395 can be connected to the keycap 110 , and the lower end of the static deflector 395 can be connected to the pivot portion 123 of the conductive base 120 .

In the present embodiment, the conductive cover 140 , the static discharge portion 395 , the pivot portion 123 of the conductive base 120 and the plate 121 form a third static discharge path P3 . When static electricity occurs outside and the location of the static electricity is close to the conductive cover 140 , the static electricity can be conducted and grounded through the third static electricity conduction path P3 .

Please refer to FIG. 4A and FIG. 4B. FIG. 4A shows a partial appearance view of a keyboard structure 400 according to another embodiment of the present invention in which the static dissipating part is a balance link, and FIG. 4B shows the keyboard structure 400 of FIG. 4A along the direction 4B- Sectional view of 4B'. To avoid too complicated illustration, the keycap supporting structure 160 is not shown in FIG. 4A .

The keyboard structure 400 includes a keycap 110 , a conductive bottom plate 120 , a light emitting element 130 , a cover 240 , a thin film circuit layer 150 , a keycap support structure 160 , an encapsulant 170 , an adhesive layer 180 , a conductive coating 290 and an electrostatic discharge part 395 . In this embodiment, the cover 240 is an insulating cover.

In this embodiment, the conductive coating 290 , the static electricity dredging portion 395 , the pivoting portion 123 of the conductive bottom plate 120 and the plate body 121 form a fourth static electricity dredging path P4 . When static electricity occurs outside and the location of the static electricity is close to the cover 240 , the static electricity can be grounded through the fourth static electricity conduction path P4 .

In another embodiment, the cover 240 in FIG. 4B can be replaced by the conductive cover 140, so that static electricity can be channeled to the ground terminal through the third static electricity channeling path P3 and the fourth static electricity channeling path P4 at the same time, which can increase the effect of static electricity channeling.

To sum up, static electricity can be channeled to the ground terminal through the conductive cover 140 or the conductive coating 290 to prevent static electricity from damaging the light-emitting element 130 or/and electronic components electrically connected to the light-emitting element 130 , such as circuit boards. Wherein the static dredging part of the bottom plate can be (1) the static dredging part 122 (bottom plate fixing mechanism) that protrudes upwards from the folded bottom plate, or (2) the static dredging part 395 (balance link) that is movably pivotally connected to the bottom plate; For the conduction of static electricity through the conductive cover 140 , the static conduction path may be the conductive cover 140 →static discharge portion 122 →plate 121 and/or conductive cover 140 →static discharge portion 395 →plate 121 . In terms of dissipating static electricity through the conductive coating 290 , the static dissipating path may be the conductive coating 290 →static dissipating portion 122 →board body 121 and/or conductive coating 290 →static dissipating portion 395 →board body 121 .

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (6)

1. A keyboard structure, comprising:

a conductive base plate electrically connected to the ground potential;

the electrostatic dredging part is connected with the conductive bottom plate;

the keycap is arranged on the conductive base plate and can move up and down relative to the conductive base plate;

the thin film circuit layer is arranged between the conductive base plate and the keycap;

the light-emitting element is arranged on the thin film circuit layer and used for emitting light; and

the conductive cover body is arranged on the thin film circuit layer and covers the light-emitting element, the conductive cover body is provided with a light-transmitting area, and the light passes through the light-transmitting area and reaches the keycap;

when static electricity appears outside, the static electricity is conducted and grounded through the conductive cover body, the static electricity leading part and the conductive bottom plate in sequence;

the static electricity dredging part is a balance connecting rod, the upper end of the balance connecting rod is connected to the keycap, the lower end of the balance connecting rod is connected to the conductive base plate, the balance connecting rod extends to be adjacent to the conductive cover body, and when the static electricity appears outside, the static electricity is conducted and grounded through the conductive cover body, the balance connecting rod and the conductive base plate in sequence; or,

the keyboard structure also comprises a keycap supporting structure, the keycap is combined at the upper end of the keycap supporting structure, the electrostatic dredging part is a bottom plate fixing mechanism, the lower end of the keycap supporting structure is connected with the bottom plate fixing mechanism, and the keycap can move up and down relative to the conductive bottom plate by virtue of the keycap supporting structure.

2. The keyboard structure of claim 1, wherein: when the electrostatic dredging part is the bottom plate fixing mechanism, the bottom plate fixing mechanism is a hook-shaped structure, the tail end of the hook-shaped structure is provided with a tip, and the tip is adjacent to the conductive cover body.

3. The keyboard structure of claim 1, wherein: the static electricity is dredged the portion and is had root and tip, and the external diameter of this static electricity is dredged the portion from this root to the direction of this tip and is tapered, makes the surface curvature of this tip be higher than the surface curvature of this root.

4. The keyboard structure of claim 1, wherein: the keyboard structure further includes:

the conductive coating is coated on the thin film circuit layer and extends from the position adjacent to the conductive cover body to the position adjacent to the electrostatic dredging part;

when the static electricity appears outside, the static electricity is conducted and grounded through the conductive coating, the static electricity dredging part and the conductive bottom plate in sequence.

5. A keyboard structure, comprising:

a conductive base plate electrically connected to the ground potential;

the electrostatic dredging part is connected with the conductive bottom plate;

the thin film circuit layer is arranged on the conductive bottom plate;

the keycap is arranged on the conductive base plate and can move up and down relative to the conductive base plate;

the light-emitting element is arranged on the thin film circuit layer and used for emitting light;

the cover body is arranged on the thin film circuit layer and covers the light-emitting element, the cover body is provided with a light-transmitting area, and the light passes through the light-transmitting area and reaches the keycap; and

the conductive coating is arranged in a coating area on the thin film circuit layer, and the coating area extends from the position adjacent to the cover body to the position adjacent to the electrostatic dredging part;

when static electricity appears outside, the static electricity is conducted and grounded through the conductive coating, the static electricity dredging part and the conductive bottom plate in sequence;

the static electricity leading part is a balance connecting rod, the upper end of the balance connecting rod is connected with the keycap, the lower end of the balance connecting rod is connected with the conductive base plate, the balance connecting rod extends above the conductive coating and is adjacent to the conductive coating, and when the static electricity appears outside, the static electricity is conducted and grounded through the conductive coating, the balance connecting rod and the conductive base plate in sequence; or

The keyboard structure further comprises a keycap supporting structure, the keycap is combined with the upper end of the keycap supporting structure, the electrostatic dredging part is a bottom plate fixing mechanism, the lower end of the keycap supporting structure is connected with the bottom plate fixing mechanism, the thin film circuit layer is provided with a through hole, the through hole is provided with a through hole periphery, the bottom plate fixing mechanism penetrates through the through hole and is adjacent to the through hole periphery, and the coating area extends to the through hole periphery.

6. The keyboard structure of claim 5, wherein: the conductive coating is disposed around the cover.