CN201716683U - Keyboard and electronic device using the same - Google Patents

Abstract

A keyboard includes: a composite holographic image, on which keyboard holographic information is recorded; a projection light source, arranged on one side of the composite holographic image, and the projection light emitted by the projection light source projects a virtual keyboard image on the composite holographic image; and a touch panel, closely arranged on one side of the composite holographic image, for detecting the position information of the touch on the virtual keyboard image. The characters on the above keyboard are recorded in the composite holographic image, which avoids waste caused by incorrect imprinting or incorrect transportation, and also avoids the problem of gaps between keys that are difficult to clean. The utility model also provides an electronic device using the above keyboard.

Description

Keyboard and electronic device using the same

【Technical field】

The utility model relates to a data input device, in particular to a keyboard combined with composite holographic technology and touch technology and an electronic device using the keyboard.

【Background technique】

Nowadays, the keyboard is the most common and main computer input device, which is widely used in microcomputers and various terminal devices. The QWERTY layout is the most common and common keyboard layout at present, and is often used on desktop computers or notebook computers. According to the different keys of the keyboard, it can be divided into four types: mechanical keyboard, plastic film keyboard, conductive rubber keyboard, and non-contact electrostatic capacitive keyboard. According to its working principle, it can be divided into contact type and non-contact type.

As we all know, mechanical keyboards are commonly used in the early stages of keyboard development history. The working principle of the keys of the mechanical keyboard belongs to the contact type. Each key has built-in metal parts as contact points. The metal part usually consists of two separate parts: an elastic element and a corresponding metal contact, both of which are made of a metal material, such as copper. When the user hits the key, the two metal parts come into contact with each other, thereby inputting an on state and outputting a signal. In contrast, when the user releases the button, the two metal parts separate and return to the closed state. This mechanical keyboard has the advantages of simple manufacturing process and convenient maintenance, but it has poor hand feeling, high noise and is easy to wear. In addition, most mechanical keyboards use copper leaf springs as elastic materials. When in use, the copper sheets tend to lose their elasticity after being bent, and the failure rate increases over time. The working principles of the plastic film keyboard and the conductive rubber keyboard are also contact type, and the key structure is similar to the aforementioned mechanical keyboard. Each key has corresponding two metal parts made of a metallic material, such as a thin copper sheet. When these two parts are in contact, the button is on. In this case, the thin copper sheet will be under stress and wear. After a period of time, the thin copper sheet may be damaged, and even lead to the failure of the entire keyboard.

Therefore, the birth of the capacitive keyboard has solved the above problems. The working principle of the capacitive keyboard is non-contact. Each key consists of two independent electrodes. When the user presses a button, the distance between the two electrodes decreases and the capacitance between them changes accordingly. Due to the change of capacitance, the instantaneous current of the keyboard is excited. When the instantaneous current exceeds a certain value, the capacitive keyboard outputs an electrical signal. The working principle of the capacitive keyboard is to use the change of electrode distance to cause the change of capacitance. Since the capacitive keyboard is non-contact, its wear rate is extremely small and negligible, and it has the characteristics of low noise and good hand feeling, but its manufacturing process is relatively complicated.

The above-mentioned keyboards can be collectively referred to as physical keyboards, which are composed of a plurality of single keys to form an integral keyboard. Since the gaps between the keys of the keyboard are relatively large, it is easy to hide dirt and dirt, and it is difficult to clean, resulting in key failures. In addition, in order to meet the needs of different languages of users in various countries, the codes and symbols of the required national language are usually printed on the keys for marking. At present, most keyboard manufacturers use laser engraving to manufacture standard keyboards first, and then engrave corresponding codes and symbols according to different needs. Once the keyboard codes and symbols are printed, they cannot be changed. When there is a printing error or wrong delivery and it cannot be used, it needs to be scrapped or covered with stickers or replaced, which is a waste of cost. Moreover, when the user needs to switch between different languages, the traditional physical keyboard cannot replace the required keyboard interface as needed.

In recent years, the tablet has gradually become another popular input device due to its convenience over traditional keyboard input. However, because most of them use a stylus for input, if the stylus is lost, the entire tablet will become unusable. In addition, writing tablets are usually used simultaneously with the aforementioned keyboard. In this case, these two separate parts will take up more space in the workplace.

With the development of electronic technology, more and more users are pursuing electronic devices with portability, convenience and multi-function, and a new input tool is needed to solve the problems and defects of the aforementioned physical keyboard and tablet . Therefore, an input device integrating a keyboard, a tablet and a mouse is worth looking forward to.

【Content of utility model】

Based on this, it is necessary to provide an easy-to-clean keyboard and an electronic device using the keyboard.

A keyboard, comprising: a composite holographic sheet on which keyboard holographic information is recorded; a projection light source arranged on one side of the composite holographic sheet, and projection light emitted by the projection light source is projected on the composite holographic sheet A virtual keyboard image; and a touch panel, which is placed close to one side of the composite holographic image, and is used to detect the position information touched on the virtual keyboard image.

In a preferred embodiment, the size and position of the virtual keyboard image match the touch panel.

In a preferred embodiment, the touch panel is closely attached to the side of the composite hologram facing the projection light source, and the projection light emitted by the projection light source is projected on the composite hologram through the touch panel. The holographic image is used to form the virtual keyboard image on the side of the composite holographic image away from the projection light source.

In a preferred implementation manner, the composite hologram is bonded to the touch panel through an adhesive.

In a preferred embodiment, the adhesive is optical glue.

In a preferred embodiment, the keyboard further includes a detachable structure, and the detachable structure fixes the composite holographic image and the touch panel to form a bond.

In a preferred embodiment, the connection method of the detachable structure adopts buckle connection or bolt connection.

In a preferred embodiment, the composite hologram is arranged on the side of the touch panel facing the projection light source, and the projection light emitted by the projection light source is projected on the composite hologram and A side of the panel away from the projection light source forms the virtual keyboard image.

In a preferred embodiment, the composite hologram is a planar structure.

In a preferred embodiment, the composite hologram is made of transparent insulating material.

In a preferred embodiment, the transparent insulating material is one of glass, latex, photonic crystal, and plastic.

In a preferred embodiment, the composite holographic photo is a photo taken by transmission holographic technology.

In a preferred embodiment, the projection light source is a light emitting diode or a laser diode.

In a preferred embodiment, the projection light source further includes a beam expander, which is arranged at the light source projecting end of the projection light source, and is used for diverging the projection light emitted by the projection light source.

In a preferred embodiment, the touch panel is one of a capacitive touch panel, a resistive touch panel, an infrared touch panel, an electromagnetic touch panel, and an acoustic wave touch panel.

In a preferred implementation manner, the touch panel includes a sensing layer for detecting and judging the touch position information.

In a preferred embodiment, the touch panel is made of light-transmitting material.

In a preferred embodiment, the keyboard further includes an outer frame, the outer frame is formed with a groove, the touch panel is erected at the opening end of the groove, and the projection light source is arranged at the bottom end of the groove .

The above-mentioned keyboard adopts the technical principle of the penetrating compound hologram, first records the position and symbols of the required keyboard on the compound hologram, and then supplements it with a light-emitting diode (LED) as a backlight. When the light is irradiated on the composite holographic image, a virtual keyboard image of the keyboard image information pre-stored in the image will appear on the surface of the composite holographic image. A transparent touch panel is lined under the composite holographic image to detect the touched position of the virtual keyboard image and provide a handwriting input function at the same time.

An electronic device includes a host, a keyboard, and transmission equipment. The keyboard includes: a composite holographic image on which keyboard holographic information is recorded; a projection light source arranged on one side of the composite holographic image, and the projection light emitted by the projection light source projects a a virtual keyboard image; and a touch panel, which is placed close to one side of the composite holographic image to detect the position information touched on the virtual keyboard image; the transmission device and the touch panel The panel is electrically connected and transmits the signal of the touch panel to the host.

In a preferred embodiment, the keyboard is integrated in the host.

In a preferred embodiment, the electronic device is a notebook computer or a mobile phone.

In a preferred embodiment, the keyboard is embedded and integrated on the desktop or wall. The above-mentioned keyboard combines composite holographic technology and touch technology. In addition to retaining the traditional physical keyboard functions, it also provides handwriting input and mouse functions. It can be used as a handwriting tablet or mouse input, and is easy to carry. The characters on the above-mentioned keyboards are recorded in the form of composite holographic images to record the forms and characters required by different languages, and there is no need to use laser engraving corresponding keyboard characters for different languages to avoid waste caused by wrong printing or wrong delivery , At the same time, it also avoids the problem that there is a gap between the keys that is difficult to clean. The above-mentioned composite hologram is easy to replicate, just like negative film replication, fast, accurate, and low in cost. When users have different needs, they only need to replace the composite hologram, which is fast and easy.

【Description of drawings】

Fig. 1 is a schematic diagram of the use state of the keyboard;

Fig. 2A is a schematic cross-sectional structural view of the first embodiment of the keyboard shown in Fig. 1;

Fig. 2B is a schematic cross-sectional structural view of the second embodiment of the keyboard shown in Fig. 1;

Fig. 3A is a structural schematic diagram of the first embodiment of the detachable structure of the keyboard;

Fig. 3B is a schematic structural diagram of the second embodiment of the keyboard detachable structure;

4 is a schematic perspective view of a first embodiment of an electronic device;

FIG. 5 is a schematic perspective view of a second embodiment of the electronic device.

Instructions for marks in the figure:

10: Keyboard 20: Virtual keyboard image 30: Composite holographic image

40: Touch panel 50: Projected light source 60: Housing

70: Adhesive 71: Slide buckle 72: Elastic part 73: Bolt connection structure

80: Transmission line 90: Desktop computer host 100: Notebook computer host

【Detailed ways】

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

FIG. 1 is a diagram showing the use status of a keyboard in an embodiment. The keyboard 10 adopts the technical principle of composite holography to project a virtual keyboard image 20 on the surface of the keyboard 10 . The user can “tap” the corresponding position of the keyboard 10 according to the virtual keyboard image 20 . The keyboard 10 uses the principle of capacitive touch to detect the position information of its surface being touched, and according to the position information, finds and outputs the command of the key corresponding to the virtual keyboard image. In addition, in addition to retaining the traditional physical keyboard function, the above-mentioned touch keyboard also provides the function of handwriting input, and can adapt to the input of different languages by changing different composite holographic images, which has strong practicability.

As shown in FIG. 2A , the keyboard 10 includes: a touch panel 40 for detecting the coordinates of the touched position; two projection light sources 50 located below the touch panel 40; a composite hologram 30 for recording keyboard holographic information, It is disposed on the upper surface of the touch panel 40 . Wherein, the recording process of the composite holographic image 30 adopts the penetrating holographic technology, that is, the object light and the reference light are on the same side of the film during recording, and the position, symbols and phases of the keyboard are recorded on the film through the diffracted transmitted light. Corresponding to the holographic information such as the amplitude and phase of the light wave. During operation, the projection light source 50 emits a projection light and projects it on the composite hologram 30 through the touch panel 40, so that a virtual keyboard image 20 emerges on the surface of the composite hologram 30, and the virtual keyboard image 20 adopts The preferred size and position matched with the touch panel 40 . Due to the use of composite holography, after the amplitude and phase differences of the corresponding light waves recorded on the composite holographic image 30 are reproduced, a more three-dimensional virtual keyboard image 20 can be formed. In this way, the user can touch the composite holographic image 30 through the virtual keyboard image 20 presented, and the touch panel 40 detects the touch position and determines its coordinate information. Likewise, the composite holographic image 30 adopts a preferred size and shape matching the touch panel 40 .

Wherein, the composite holographic image 30 can be made of transparent insulating material, such as glass, latex, photonic crystal or plastic, and is formed by using planar transmission holographic technology. The composite holographic image 30 can be directly bonded to the touch panel 40 by using an adhesive 70 (as shown in FIG. 4 ). Wherein, the adhesive 70 can be optical clear adhesive OCA (Optical Clear Adhesive). The composite holographic sheet 30 can also be bonded to the touch panel 40 by means of mechanical design. In terms of mechanism design, the keyboard 10 further includes a detachable structure for fixing and press-fitting the composite hologram 30 and the touch panel 40 . Of course, according to actual needs, adhesives and mechanical structures can also be used to bond the composite holographic sheet 30 to the touch panel 40 .

The above-mentioned detachable structure can adopt structures such as buckle connection or bolt connection, so as to fix and press the composite hologram 30 and the touch panel 40 tightly.

FIG. 3A is a schematic structural view of the first embodiment of the detachable structure. The detachable structure is a symmetrical snap connection structure, including a sliding buckle 71 and an elastic member 72 connected to the sliding buckle 71 . When it is necessary to use keyboards of different languages, it is only necessary to push the sliding buckle 71 and replace the required composite hologram 30 .

FIG. 3B is a schematic structural diagram of a second embodiment of the detachable structure. The detachable structure is a symmetrically arranged bolt connection structure 73 , and the lower end 74 of the bolt connection structure 73 is fixed. When it is necessary to use keyboards of different languages, it is only necessary to remove the nut 75 on the upper end of the bolt connection structure 73 and replace the required composite hologram 30.

The touch panel 40 is made of a transparent material, and can be a capacitive touch panel, a resistive touch panel, an infrared touch panel, an electromagnetic touch panel, or an acoustic wave touch panel.

The transmitted light emitted by the projection light source 50 can pass through the touch panel 40 and project on the composite hologram 30 . Wherein, the touch panel 40 includes a sensing layer made of a transparent conductive material. The sensing layer is provided with a plurality of sensing units corresponding to the keyboard layout and corresponding characters on the composite hologram 30, so as to sense and judge the touched position of the keyboard 10, and at the same time provide Handwriting function input.

The projection light source 50 may use one or more monochromatic light emitting diodes (LEDs) as a backlight, or, the projection light source 50 may also use one or more laser diodes (LDs). In addition, the projection light source 50 can also include a beam expander mirror (not shown in the figure), which is arranged at the light source projection end of the projection light source 50, so that the projection light emitted by the projection light source can diverge and cover the entire surface of the composite hologram 30. . In addition, the actual arrangement of the projection light source 50 is determined according to the actual design, and the criterion is to provide enough projection light and make the projection light evenly distributed.

Please refer to FIG. 2A again, when the keyboard 10 is an independent device, it further includes an outer frame 60 , and the outer frame 60 is formed with a groove. The composite holographic image 30 and the touch panel 40 are attached to each other and mounted on the opening end of the groove of the outer frame 60 . The projection light source 50 is disposed at the bottom of the groove of the outer frame 60 , correspondingly disposed below the touch panel 40 .

2B is another embodiment of the keyboard 10, wherein the composite hologram 30 is arranged under the touch panel 40, and the projection light source 50 is arranged under the composite hologram 30, and the projection light emitted by it is projected on the composite hologram. sheet 30 and forms a virtual keyboard image 20 above the touch panel 40 . Its working principle is similar to that of the aforementioned embodiment in FIG. 2A , and will not be repeated here.

The keyboard 10 can be applied in an electronic device. The electronic device can be a desktop computer, a notebook computer, a mobile phone, etc., and includes a host, a keyboard 10, and a transmission device. The transmission device is electrically connected to the touch panel 40 of the keyboard 10 and transmits signals of the touch panel 40 to the host. The implementation manner thereof will be further described below.

FIG. 4 shows a first embodiment of an electronic device using the keyboard 10 . In the first embodiment, the electronic device is a desktop computer. The keyboard 10 is connected to the host computer 90 of the desktop computer through a transmission line 80 to form a wired transmission structure. Wherein, the transmission line 80 may adopt serial transmission methods such as Universal Serial Bus (USB), RS-232, and the like. In addition, the keyboard 10 can also communicate with the host 90 of the desktop computer through wireless transmission methods, such as wireless fidelity (WIFI), radio frequency identification (RFID), infrared technology (IR) or Bluetooth (Bluetooth). connected. Furthermore, the composite holographic sheet 30 of this embodiment is bonded to the touch panel 40 through the adhesive 70 , and its working principle is similar to that of the aforementioned embodiment in FIG. 2A , which will not be repeated here.

FIG. 5 shows a second embodiment of the electronic device using the keyboard 10 . In the second embodiment, the electronic device is a notebook computer. The structure of this embodiment is roughly the same as that of the above-mentioned first embodiment, and the main difference is that the keyboard 10 is integrated in the host computer 100 of the notebook computer in the form of being embedded. Likewise, the keyboard 10 provided by the present invention can be integrated into electronic devices that require key input, such as mobile phones.

In addition, the keyboard 10 can also be integrated on a desktop or wall in an embedded manner according to actual application requirements, so as to be more diversely applied in various environments.

The keyboard 10 of the present utility model needs to first record the keyboard arrangement commonly used in the required national language and the corresponding characters on each key on the composite holographic image 30 during use. When the projection light source 50 is turned on, the user can see a virtual keyboard image 20 floating on the surface of the composite hologram 30 . The virtual keyboard image 20 is consistent with the keyboard layout and corresponding characters recorded on the composite holographic image 30 , and the size and shape of the virtual keyboard image also correspond to the touch panel 40 . When the user touches the composite holographic image 30 corresponding to the character on the virtual keyboard image 20, the touch panel 40 detects the position touched by the user through the sensing unit on the virtual keyboard image 20 and recognizes the touched position. The corresponding information, or detecting the user's gesture of touching the keyboard, judging the information corresponding to the touch gesture, and providing the handwriting input function.

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (22)

1. A keyboard, characterized in that, comprising: Composite holographic image with keyboard holographic information recorded on it; The projection light source is arranged on one side of the composite hologram, and the projection light emitted by the projection light source projects a virtual keyboard image on the composite hologram; and The touch panel is arranged close to one side of the composite hologram, and is used to detect the position information touched on the virtual keyboard image. 2. The keyboard according to claim 1, wherein the size and position of the virtual keyboard image match the touch panel. 3. The keyboard according to claim 1, wherein the touch panel is placed close to the side of the composite holographic sheet facing the projection light source, and the projection light emitted by the projection light source passes through the projection light source. The touch panel is projected onto the composite hologram and forms the virtual keyboard image on a side of the composite hologram away from the projection light source. 4. The keyboard according to claim 3, wherein the composite holographic image is bonded to the touch panel through an adhesive. 5. The keyboard according to claim 4, wherein the adhesive is optical glue. 6 . The keyboard according to claim 3 , wherein the keyboard further comprises a detachable structure, and the detachable structure fixes the composite holographic image and the touch panel to form a bond. 7. The keyboard according to claim 6, characterized in that, the detachable structure is connected by buckle connection or bolt connection. 8. The keyboard according to claim 1, wherein the composite hologram is arranged on the side of the touch panel facing the projection light source, and the projection light emitted by the projection light source is projected on the composite hologram and form the virtual keyboard image on the side of the touch panel away from the projection light source. 9. The keyboard according to claim 1, wherein the composite holographic image is a planar structure. 10. The keyboard according to claim 1, wherein the composite hologram is made of a transparent insulating material. 11. The keyboard according to claim 10, wherein the transparent insulating material is one of glass, latex, photonic crystal and plastic. 12. The keyboard according to claim 1, characterized in that, the composite holographic image is an image captured by transmission holographic technology. 13. The keyboard according to claim 1, wherein the projection light source is a light emitting diode or a laser diode. 14 . The keyboard according to claim 1 , wherein the projection light source further comprises a beam expander disposed at the light source projecting end of the projection light source for diverging the projection light emitted by the projection light source. 15. The keyboard according to claim 1, wherein the touch panel is a capacitive touch panel, a resistive touch panel, an infrared touch panel, an electromagnetic touch panel, and an acoustic wave touch panel One of the boards. 16. The keyboard according to claim 1, wherein the touch panel comprises a sensing layer for detecting and judging the touch position information. 17. The keyboard according to claim 1, wherein the touch panel is made of light-transmitting material. 18. The keyboard according to claim 1, characterized in that, the keyboard further comprises an outer frame, the outer frame is formed with a groove, the touch panel is erected at the opening end of the groove, and the projection light source set at the bottom of the groove. 19. An electronic device, comprising a host, a keyboard, and a transmission device, wherein the keyboard comprises: Composite holographic image with keyboard holographic information recorded on it; The projection light source is arranged on one side of the composite hologram, and the projection light emitted by the projection light source projects a virtual keyboard image on the composite hologram; and A touch panel, which is closely attached to one side of the composite hologram, is used to detect the position information touched on the virtual keyboard image; The transmission device is electrically connected with the touch panel, and transmits the signal of the touch panel to the host. 20. The electronic device according to claim 19, wherein the keyboard is integrated in the host. 21. The electronic device according to claim 20, wherein the electronic device comprises a notebook computer or a mobile phone. 22. The electronic device according to claim 19, wherein the keyboard is embedded and integrated on a desktop or a wall.

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