TWM446364U - Thin illuminating keyboard - Google Patents

Abstract

A thin illuminating keyboard includes a base plate and a backlight module. The backlight module includes a light emitting unit, a light guide plate, a reflective plate and a shielding layer or a shielding sheet. The light emitting unit and the light guide plate are disposed below the base plate. The light guide plate is for guiding light emitted from the light emitting unit. The reflective plate is disposed on a side of the light guide plate for reflecting the light passing out of the light guide plate. The shielding layer or the shielding sheet is disposed on at least one lateral portion of the reflective plate for absorbing light passing out of the light guide plate in a position corresponding the at least one lateral portion of the reflective plate, so as to reduce the leak light reflected by the at least one lateral portion of the reflective plate.

Description

Thin, illuminated keyboard

The present invention relates to a thinned illuminated keyboard, and more particularly to a thinned illuminated keyboard that utilizes a light shielding layer or a light shielding sheet to reduce light leakage at the side edges.

In terms of current personal computer usage habits, the keyboard is one of the indispensable input devices for entering text, symbols or numbers. Recently, with the improvement of consumers' visual perception, a illuminating keyboard has become a new development direction in the industry. However, today's illuminated keyboards are moving in a light, short, and short direction. Under the constraints of the mechanism space and component size, conventional methods are used to prevent light leakage of the light shield to further reduce the thickness of the illuminated keyboard. However, the above-mentioned method causes the problem of light leakage of the illuminated keyboard. In practice, the problem of light leakage at the edge of the illuminated keyboard is the most serious, which causes the appearance of the illuminated keyboard.

Therefore, the present invention provides a thinned illuminated keyboard that utilizes a light shielding layer or a light shielding sheet to reduce light leakage at the side edges to solve the above problems.

In order to achieve the above object, the present invention discloses a thinned illuminated keyboard comprising a bottom plate, a plurality of buttons and a backlight module. The plurality of buttons are disposed on the bottom plate, and the backlight module comprises at least one light emitting unit, a light guide plate, a reflective plate and a light shielding layer. The at least one light emitting unit is disposed under the bottom plate, and the at least one hair The light unit is used to emit light. The light guide plate is disposed under the bottom plate, and the light guide plate is configured to guide the light emitted by the at least one light emitting unit. The reflector is disposed on one side of the light guide plate, and the reflector is configured to reflect light that is passed through the light guide plate. The light shielding layer is disposed on at least one side of the reflector, and the light shielding layer is configured to absorb the light that is passed through the light guide plate at the at least one side of the corresponding reflector, thereby reducing the reflection of the reflector The amount of light reflected by at least one side.

In order to achieve the above object, the present invention further discloses a thinned illuminated keyboard comprising a bottom plate, a plurality of buttons and a backlight module. The plurality of buttons are disposed on the bottom plate, and the backlight module comprises at least one light emitting unit, a light guide plate, a reflective plate and a light shielding film. The at least one light emitting unit is disposed under the bottom plate, and the at least one light emitting unit is configured to emit light. The light guide plate is disposed under the bottom plate, and the light guide plate is configured to guide the light emitted by the at least one light emitting unit. The reflector is disposed on one side of the light guide plate, and the reflector is configured to reflect light passing through the light guide plate, and an accommodation space is formed between at least one side of the reflector and the light guide plate. The light shielding sheet is disposed in the accommodating space for absorbing light passing through the light guide plate at the at least one side of the corresponding reflecting plate, thereby reducing the at least one side of the reflecting plate The amount of light reflected by the part.

In summary, the backlight module of the present invention can omit the arrangement of the light shielding plate that is conventionally installed between the light guide plate and the button, thereby omitting the thickness of the light shielding plate, thereby achieving the effect of reducing the overall thickness of the illuminated keyboard. Further, the present invention utilizes a light shielding layer disposed on a side portion of the reflector or a light shielding sheet disposed in the accommodation space to absorb the light guide plate corresponding thereto. The light passing through the side portions of the reflector reduces the amount of light reflected by the side portions of the reflector. In this way, the creation can greatly reduce the light leakage problem at the edge of the illuminated keyboard, thereby improving the appearance of the illuminated keyboard. The foregoing and other technical contents, features, and advantages of the present invention will be apparent from the following detailed description of the embodiments of the invention.

The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is used to illustrate that it is not intended to limit the creation.

Please refer to FIG. 1 , which is a schematic diagram of the appearance of the components of the illuminated keyboard 3 according to the first embodiment of the present invention. As shown in FIG. 1 , the illuminated keyboard 3 includes a bottom plate 30 , a plurality of buttons 32 , and a backlight module 34 . A plurality of buttons 32 are disposed on the bottom plate 30 for the user to press, thereby performing operations desired by the user, such as inputting characters, symbols or numbers. The backlight module 34 is disposed under the bottom plate 30 for providing a light source, so that the illuminated keyboard 3 can be illuminated when in use, thereby improving the visual perception of the user when using the illuminated keyboard 3.

Please refer to FIG. 2, which is a cross-sectional view of the components of the illuminated keyboard 3 of the first embodiment of the present invention. As shown in FIG. 2, each button 32 of the illuminated keyboard 3 includes a key cap 36 and an elastic member 38 disposed between the bottom plate 30 and the key cap 36. When the user presses the button 32, the key cap 36 moves toward the bottom plate 30 to compress the elastic member 38. At this time, the elastic member 38 stores an elastic potential energy due to elastic deformation. When the user completes the pressing, the user's finger leaves the keycap 36, and the elastic member 38 can release the elastic position energy to apply the elastic returning force of the keycap 36, thereby driving the keycap 36 to be reset. In this embodiment, the elastic member 38 may be a rubber dome, but is not limited thereto. For example, the elastic member 38 can also be a metal spring. As for which of the above designs is used, it depends on actual needs.

In addition, the illuminated keyboard 3 further includes a circuit board 40 disposed on the bottom plate 30. As shown in FIG. 2, the circuit board 40 has a switch 401 corresponding to each of the buttons 32, and the elastic member 38 has a trigger portion 381 corresponding to the switch 401. When the user presses the button 32, the elastic member 38 is compressed so that the trigger portion 381 presses the switch 401 of the circuit board 40, thereby executing a corresponding one of the button commands. In this embodiment, the circuit board 40 can be a thin film circuit board, but is not limited thereto. For example, the circuit board 40 can also be a button circuit board that generally has a trigger switch. As for which of the above designs is used, it depends on actual needs.

In addition, each button 32 includes a lifting support mechanism 42 disposed on the bottom plate 30, and the key cap 36 is disposed on the lifting support mechanism 42. When the user presses the button 32, the lifting support mechanism 42 can evenly distribute the pressing force of the user to the key cap 36, so that the key cap 36 can smoothly move downward relative to the bottom plate 30, thereby stably executing the key command. When the keycap 36 is in the above-described resetting process, the lifting support mechanism 42 can equally distribute the elastic restoring force generated by the elastic member 38 to the keycap 36 so that the keycap 36 can smoothly move upward relative to the bottom plate 30. In this embodiment, the lifting support mechanism 42 can be A wrench mechanism, but not limited to this. For example, the lifting support mechanism 42 can also be a balance bar mechanism. As for which of the above designs is used, it depends on actual needs.

As shown in FIG. 1 and FIG. 2, the backlight module 34 of the illuminated keyboard 3 includes a plurality of light emitting units 44 and a flexible circuit board 46. The plurality of light emitting units 44 are disposed under the bottom plate 30, and the flexible circuit board 46 is coupled. Connected to a plurality of light emitting units 44. The flexible circuit board 46 is used to supply power to the plurality of light emitting units 44 such that the light emitting unit 44 can be driven by the flexible circuit board 46 to emit light, thereby providing a light source required for the backlight module 34 to emit light. In this way, the illuminated keyboard 3 can be illuminated when in use, thereby improving the visual perception of the user when using the illuminated keyboard 3. In this embodiment, the flexible circuit board 46 can be a Flexible Printed Circuit (FPC).

In practice, the backlight module 34 includes only one light emitting unit 44 according to actual needs. That is to say, as long as it is a structural design including more than one light-emitting unit 44, it is within the scope of protection of the present invention. As shown in FIG. 1 and FIG. 2, the light-emitting unit 44 of the present invention is provided with one side of a plurality of buttons 32. That is to say, the backlight module 34 of the present invention can be a one-side light backlight module.

In addition, the backlight module 34 further includes a light guide plate 48 disposed under the bottom plate 30 and located on one side of the light emitting unit 44. When the light-emitting unit 44 is illuminated, the light guide plate 48 can be used to guide the light emitted by the light-emitting unit 44 so that the light emitted by the light-emitting unit 44 can be evenly distributed, so that the backlight module 34 can be compared by the light guide plate 48. Evenly Light. In practice, the bottom plate 30 can be formed with a plurality of light-transmissive holes 301 for transmitting the light that is guided by the light guide plate 48, so that the light-emitting keyboard 3 has a better light-emitting effect, and the light-transmissive hole 301 of the present invention is created. The number and position are not limited to the drawings, and the end depends on actual needs. In addition, the key cap 36 can also be formed with a light transmitting portion 361 for transmitting light transmitted by the plurality of light transmitting holes 301, so that the light can be transmitted to the outside of the key cap 36 via the light transmitting portion 361, thereby generating light. Visual effect.

As shown in FIG. 1 and FIG. 2 , the backlight module 34 further includes a reflector 50 disposed on one side of the light guide plate 48 . When the light emitting unit 44 emits light, the light guide plate 48 guides the light emitted by the light emitting unit 44. At this time, part of the light can pass through the light guide plate 48, and the reflection plate 50 can be used to reflect the light that is guided by the light guide plate 48, so that the light can be projected toward the bottom plate 30 more concentratedly. Further, the reflecting plate 50 has a plate body 501 and four side portions 503. The plate body 501 is disposed under the light guide plate 48, and the side edge portion 503 is connected to the side of the plate body 501 and abuts against the bottom plate 30. The reflector plate 50 can be combined with the bottom plate 30 to cover the light guide plate 48 and the light emitting unit 44. The light guide plate 48 and the light emitting unit 44 are protected from collision and damaged.

In addition, the backlight module 34 further includes a light shielding layer 52 disposed on the side edge portion 503 of the reflection plate 50. It should be noted that the light shielding layer 52 may be disposed only on one side portion 503 of the reflection plate 50, or the light shielding layer 52 may be disposed on one or more side portions 503 of the reflection plate 50. In other words, as long as it is a structural design including more than one light shielding layer 52, it is within the scope of protection of the present invention, and the number and position of the light shielding layer 52 of the present invention are not limited to the drawings, and It depends on actual needs. In this embodiment, the light shielding layer 52 may be composed of an ink material, and the light shielding layer 52 may be applied to the side edge portion 503 of the reflection plate 50 in a printed manner.

When light is directed to the edge of the light guide plate 48, a portion of the light can be projected through the light guide plate 48 toward the reflective plate 50. At this time, the light shielding layer 52 disposed on the side edge portion 503 of the reflection plate 50 can absorb the light that is passed through the side edge portion 503 of the corresponding reflection plate 50 by the light guide plate 48, thereby reducing the side portion of the reflection plate 50. The amount of light reflected by 503. In this way, the present invention can greatly reduce the light leakage problem at the edge of the illuminated keyboard 3 by using the light shielding layer 52 disposed on the side edge portion 503 of the reflecting plate 50, thereby achieving the effect of improving the visual appearance of the illuminated keyboard 3. In practice, the color of the light shielding layer 52 (ie, the ink material) may be dark, such as black, brown, and the like. As for which of the above designs is used, it depends on actual needs.

Please refer to FIG. 3, which is a cross-sectional view showing the components of the illuminated keyboard 3' according to the second embodiment of the present invention. As shown in FIG. 3, the main difference between the illuminated keyboard 3' and the above-mentioned illuminated keyboard 3 is that one side edge 503' of one of the reflective keyboards 50' and one light guide of the illuminated keyboard 3' The accommodating space 54 is formed in the vacant space. The backlight module 34 ′ of the illuminating keyboard 3 ′ further includes a visor 56 disposed in the accommodating space 54 . Similarly, when light is directed to the edge of the light guide plate 48', a portion of the light can be projected through the light guide plate 48' toward the reflective plate 50'. At this time, the light shielding sheet 56 disposed in the accommodating space 54 can be used to absorb the light that is guided by the light guide plate 48' at the side edge portion 503' of the corresponding reflection plate 50', thereby reducing the side of the reflection plate 50'. The amount of light reflected by portion 503'. In this way, the creative system can be used in the accommodating space. The light shielding sheet 56 in 54 greatly reduces the light leakage problem at the edge of the illuminated keyboard 3', thereby improving the appearance of the illuminated keyboard 3'.

In this embodiment, the light shielding sheet 56 can be a mylar. In practice, the color of the visor 56 (ie, the shims) can be dark, such as black, brown, and the like. As for which of the above designs is used, it depends on actual needs. The components of the embodiment having the same reference numerals as in the above embodiments have the same structural design and function principle, and are not described herein for brevity. It is worth mentioning that the light shielding layer 52 of the backlight module 34' of the illuminated keyboard 3' is an elliptable structure. For example, when the light shielding sheet 56 can absorb enough light that is guided by the light guide plate 48' at the side edge portion 503' of the corresponding reflection plate 50', that is, when the light shielding film 56 can sufficiently reduce the light emitting keyboard 3' When the light leakage problem occurs at the edge, the backlight module 34' of the illuminated keyboard 3' can omit the setting of the light shielding layer 52, thereby reducing the production cost of the illuminated keyboard 3'.

Compared with the prior art, the backlight module of the present invention can omit the arrangement of the light shielding plate which is conventionally installed between the light guide plate and the button, thereby omitting the thickness of the light shielding plate, thereby achieving the effect of reducing the overall thickness of the illuminated keyboard. Further, the present invention utilizes a light shielding layer disposed on a side portion of the reflector or a light shielding sheet disposed in the accommodating space to absorb light passing through the side of the corresponding reflector of the light guide plate, thereby reducing the reflector The amount of light reflected by the side portions. In this way, the creation can greatly reduce the light leakage problem at the edge of the illuminated keyboard, thereby improving the appearance of the illuminated keyboard.

The above description is only a preferred embodiment of the present invention, and the patent application scope is applied according to the present creation. Equal changes and modifications made should be covered by this creation.

3, 3'‧‧‧ illuminated keyboard

30‧‧‧floor

301‧‧‧Light hole

32‧‧‧ button

34, 34'‧‧‧ backlight module

36‧‧‧Key Cap

361‧‧‧Transmission Department

38‧‧‧Flexible parts

381‧‧‧Trigger

40‧‧‧ boards

401‧‧‧ switch

42‧‧‧ Lifting support mechanism

44‧‧‧Lighting unit

46‧‧‧Soft circuit board

48, 48'‧‧‧Light guide plate

50, 50'‧‧‧reflector

501‧‧‧ board

503, 503'‧‧‧ side

52‧‧‧Lighting layer

54‧‧‧ accommodating space

56‧‧ ‧ shading film

FIG. 1 is a schematic view showing the appearance of components of the illuminated keyboard of the first embodiment of the present invention.

Fig. 2 is a cross-sectional view showing the components of the illuminated keyboard of the first embodiment of the present invention.

Fig. 3 is a cross-sectional view showing the components of the illuminated keyboard of the second embodiment of the present invention.

3‧‧‧Lighting keyboard

30‧‧‧floor

301‧‧‧Light hole

32‧‧‧ button

34‧‧‧Backlight module

36‧‧‧Key Cap

361‧‧‧Transmission Department

38‧‧‧Flexible parts

381‧‧‧Trigger

40‧‧‧ boards

401‧‧‧ switch

42‧‧‧ Lifting support mechanism

44‧‧‧Lighting unit

46‧‧‧Soft circuit board

48‧‧‧Light guide

50‧‧‧reflector

501‧‧‧ board

503‧‧‧ Side

52‧‧‧Lighting layer

Claims (20)

A thin-type illuminated keyboard, comprising: a bottom plate; a plurality of buttons disposed on the bottom plate; and a backlight module comprising: at least one light emitting unit disposed under the bottom plate, the at least one The light-emitting unit is configured to emit light; a light guide plate is disposed under the bottom plate, the light guide plate is configured to guide the light emitted by the at least one light-emitting unit; and a reflective plate is disposed on one side of the light guide plate. a reflector for reflecting light emitted by the light guide plate; and a light shielding layer disposed on at least one side of the reflector, the light shielding layer for absorbing the light guide plate corresponding to the reflector Light passing through at least one side portion to reduce the amount of light reflected by the at least one side portion of the reflecting plate. The illuminating keyboard of claim 1, wherein the reflecting plate has a plate body under the light guiding plate, and the at least one side of the reflecting plate is connected to a side of the plate body and abuts Base plate. The illuminated keyboard of claim 1, wherein the light shielding layer is composed of an ink material. The illuminated keyboard of claim 1, wherein the light shielding layer is applied by printing The at least one side of the reflector. The illuminating keyboard of claim 1, wherein the backlight module further comprises: a flexible circuit board coupled to the at least one light emitting unit, wherein the flexible circuit board is configured to drive the at least one light emitting unit to emit light. The illuminated keyboard of claim 1, wherein the bottom plate is formed with a plurality of light-transmissive holes for transmitting light emitted by the light guide plate. The illuminating keyboard of claim 6, wherein each button comprises: a lifting support mechanism disposed on the bottom plate; and a key cap disposed on the lifting support mechanism, the keycap is formed with a light transmission a portion for transmitting light transmitted by the plurality of light-transmissive holes. The illuminating keyboard of claim 7, wherein each button further comprises: an elastic member disposed between the bottom plate and the key cap, the elastic member for driving the key cap to be reset. The illuminated keyboard of claim 1, further comprising a circuit board disposed on the bottom plate. A thinned illuminated keyboard comprising: a bottom plate; a plurality of buttons disposed on the bottom plate; and a backlight module comprising: at least one light emitting unit disposed under the bottom plate, the at least one light emitting unit for emitting light; and a light guide plate disposed on the light guide plate The light guide plate is configured to guide the light emitted by the at least one light emitting unit, and the reflective plate is disposed on one side of the light guide plate, and the reflective plate is configured to reflect the light emitted by the light guide plate. An accommodating space is formed between the at least one side of the reflector and the light guide plate, and a visor is disposed in the accommodating space for absorbing the light guide plate corresponding to the reflector The light passing through the at least one side portion reduces the amount of light reflected by the at least one side portion of the reflecting plate. The illuminated keyboard of claim 10, wherein the light shielding sheet is a spacer. The illuminating keyboard of claim 10, wherein the backlight module further comprises a light shielding layer disposed on the at least one side of the reflective plate, the light shielding layer being used for absorbing the light guide plate together with the light shielding plate And illuminating the light passing through the at least one side of the reflecting plate to reduce the amount of light reflected by the at least one side of the reflecting plate. The illuminated keyboard of claim 12, wherein the light shielding layer is composed of an ink material. The illuminated keyboard of claim 12, wherein the light shielding layer is applied to the at least one side of the reflective plate in a printed manner. The illuminating keyboard of claim 10, wherein the reflecting plate has a plate body under the light guiding plate, and the at least one side of the reflecting plate is connected to a side of the plate body and abuts Base plate. The illuminating keyboard of claim 10, wherein the backlight module further comprises: a flexible circuit board coupled to the at least one light emitting unit, wherein the flexible circuit board is configured to drive the at least one light emitting unit to emit light. The illuminated keyboard of claim 10, wherein the bottom plate is formed with a plurality of light-transmissive holes for transmitting light emitted by the light guide plate. The illuminated keyboard of claim 17, wherein each button comprises: a lifting support mechanism disposed on the bottom plate; and a key cap disposed on the lifting support mechanism, the key cap forming a light transmitting portion It is used to transmit light transmitted by the plurality of light-transmissive holes. The illuminating keyboard of claim 18, wherein each button further comprises: an elastic member disposed between the bottom plate and the key cap, the elastic member for driving the key cap to be reset. The illuminated keyboard of claim 10, further comprising a circuit board disposed on the bottom plate.