CN201322921Y

CN201322921Y - Handwriting display device with capacitance touch control keystrokes

Info

Publication number: CN201322921Y
Application number: CNU2008201233973U
Authority: CN
Inventors: 李兵; 侯涛; 向国威
Original assignee: Hanwang Technology Co Ltd
Current assignee: Hanwang Technology Co Ltd
Priority date: 2008-11-10
Filing date: 2008-11-10
Publication date: 2009-10-07
Anticipated expiration: 2018-11-10

Abstract

The utility model provides a handwriting display device with capacitance touch control keystrokes and belongs to the field of display equipment. The device comprises a casing, a capacitance sensitive panel, a sensor chip array, a processor, a control plate, an antenna panel, a capacitance keystroke board, and an LCD. The capacitance keystroke board transmits keystroke pressing signals of a user to the capacitance sensitive panel; the capacitance sensitive panel conducts sensing and transmits the sensing signals to the sensor chip array arranged thereof; the sensor chip array transmits triggering signals to the processor, and the triggering signals are transmitted to the control plate after being processed by the processor; and the control plate is used for transmitting the final signals to a computer for processing and display. The display device realizes external arrangement of a driven board, is provided with capacitance touch control keystrokes, and has electromagnetic handwriting input function, so that the track written by the user on the display can be directly displayed, and all writings can be displayed. The required keystroke operation or slide operation can be realized only when tightly touching or sliding, and the touch control sensitive keystokes can be utilized to complete the function of common keystrokes, thereby realizing simple structure and high reliability.

Description

The hand writing display device that has capacitance type touch control keys

Technical field

The utility model belongs to field of display devices, relates to a kind of display device with electromagnetic type handwriting input, particularly relates to a kind of display device that has capacitance type touch control keys.The realization of this display device drive plate external, and can directly show user's drawn track on display screen, realize that it is finding that institute is write, this display device is light and handy, and is convenient, is mainly used in handwriting recognition and painting field.

Background technology

The basic display unit of present most computing machine does not all have the function of handwriting input, can only be used for showing, function ratio is more single, and on the current market most of display device or hand input device with function key or shift knob all be to adopt key switch, this mechanical switch is limited serviceable life, and outward appearance is outmoded.

Capacitance type touch control keys is longer compared with the conventional keys life-span, react sensitiveer, only need to touch in the touch area gently or slide and just can accomplish required operation, on shell, do not need to be provided with the effect that common key-press promptly can reach clicking trigger, rely on touch control induction key-press just can finish the function of common key-press, simple in structure, the reliability height.

In the existing electromagnetic type hand writing display device, though can user's hand-written operation be responded fast, can directly show user's drawn track on display screen, realize that it is finding that institute is write, but do not adopt the capacitance touching control induced key mostly, the capacitance touching control induced key does not need the effect that common key-press promptly can reach clicking trigger is set, and relies on touch control induction key-press just can finish the function of common key-press like this, simple in structure, the reliability height.

So, need a kind of new-type electronic product, this product can be applied to the capacitance type touch control keys technology not only have hand-write input function in the electronic product of electromagnetic type hand writing display device, and realize the capacitance type touch key function simultaneously, make product improve more and be easier to and promote.

The utility model content

It is external that technical problem to be solved in the utility model provides a kind of drive plate, has capacitance type touch control keys, can realize the portable display apparatus of electromagnetic type handwriting input simultaneously.This display device can directly show user's drawn track on display screen, realizes that it is finding that institute is write.

A kind of hand writing display device that has capacitance type touch control keys comprises shell, it is characterized in that, also comprises: capacitive sensing plate, sensing chip array, processor, control panel, antenna plate, capacitance key plate and liquid crystal display;

The capacitance key plate links to each other with shell, is covered with the sensing chip array on the capacitive sensing plate of capacitance key plate correspondence position, and sensing chip array and processor are solidificated on the capacitive sensing plate, and control panel is controlled the signal of processor output.

Described sensing chip array, processor are solidificated on the capacitive sensing plate, carry out the signal transmission mutually.

Described capacitance key plate comprises click keys district and slip key zone, and there is the sensing chip array on the capacitive sensing plate position of keypad correspondence, and each slip key zone is corresponding with a plurality of sensing chips in the sensing chip array.

At least one click keys district of described capacitance key plate, corresponding enclosure position is provided with the capacitive sensing plate in the click keys district, with the capacitive sensing plate of click keys district correspondence position on be covered with at least one sensing chip.

The click keys district of described capacitance key plate correspondence and slip key zone and shell are in aggregates, are the concave shaped groove, or indicate with pattern.

The beneficial effects of the utility model are not need to be provided with the effect that common key-press promptly can reach clicking trigger on shell, rely on touch control induction key-press just can finish the operation of common key-press, and are simple in structure, the reliability height.

Description of drawings

Fig. 1 is the outside drawing that the utility model has the electromagnetic type hand writing display device of capacitance type touch control keys;

Fig. 2 is the capacitance key plate outside drawing of the utility model electromagnetic type hand writing display device of having capacitance type touch control keys;

Fig. 3 is the fundamental diagram that the utility model has the electromagnetic type hand writing display device of capacitance type touch control keys;

Fig. 4 is the embodiment synoptic diagram that the present invention has the electromagnetic type hand writing display device of capacitance type touch control keys.

Among the figure: 1, liquid crystal display; 2, control panel; 3, processor; 4, sensing chip array; 5, capacitive sensing plate; 6, shell; 7, capacitance key plate; 701, click keys district; 702, slip key zone 8, writing pencil.

Embodiment

Below in conjunction with accompanying drawing principle of the present utility model and implementation method are described:

The utility model combines electromagnetic type handwriting pad and display, can on display screen, carry out hand-written, realize the electromagnetic type handwriting input, can replace traditional drawing boards like this, and reaching institute, to write be being seen real-time display effect, adopts capacitance type touch control keys simultaneously, replaced traditional key switch, can in the touch area on display screen both sides, click and slide, realize the operation of clicking and sliding.

Have the capacitance type touch control keys hand writing display device, as shown in Figure 3, comprise shell 6, capacitive sensing plate 5, sensing chip array 4, processor 3, control panel 2, capacitance key plate 7.

Capacitance key plate 7 is used for for the button operation of user input, capacitance key plate 7 at least one click keys district 701, with the capacitive sensing plate 5 of click keys district 701 correspondence positions on be covered with at least one sensing chip of sensing chip array 4.The user can import the control information to this device in capacitance key plate 7, capacitance key plate 7 can be connected by the mode of pasting with shell 6, the sensing chip array 4 that is solidificated on the capacitive sensing plate 5 can be by capacitive sensing plate 5 reception users' operation information, when promptly the degree of depth of being touched at capacitance key plate 7 when finger reaches the setting threshold of each sensing chip of sensing chip array 4, people's bulk electric field can produce the coupling capacitance effect at each sensing chip of sensing chip array 4, and the relative trigger signal can be delivered to processor 3 places that are solidificated in equally on the capacitive sensing plate 5.

Processor 3 is converted into these trigger pips key information and is delivered to control panel 2 by SPI interface or IIC interface, and control panel 2 transmits by the USB interface agreement, and keyed information is passed to liquid crystal display 1.By liquid crystal display 1 result is presented on the screen, simultaneously control signal corresponding is back to control panel 2 by the USB interface agreement, control panel 2 passes to processor 3 by SPI or IIC interface with corresponding control information again and handles, and this user's control procedure finishes.

As shown in Figure 1, be provided with capacitance key plate 7 on the surface of shell 6, capacitance key plate 7 comprises slip key zone 702 and click keys district 701, and capacitance key plate 7 is parts of shell 6, and is all as a whole when carrying out product structure design and finished product injection moulding with shell 6.In the present embodiment, two chip capacitor formula keypads 7 lay respectively at the right and left of liquid crystal display 1 screen.

As shown in Figure 2, described capacitance key plate 7 adopts the CY8C20334 main control chip, comprise click keys district 701 and slip key zone 702, there is the sensing chip array 4 on the capacitive sensing plate 5 position of capacitance key plate 7 correspondences, and each slip key zone 702 is corresponding with a plurality of sensing chips in the sensing chip array 4.The user touches different induction zones respectively and realizes different slips and clicking operation.The degree of depth of the indent in slip key zone 702 and click keys district 701 is suitable with the size and the degree of depth of ordinary person's finger with size.For slip key zone 702, sensing chip 6 by the multi-disc sensing chip array 4 that opposite position solidifies on capacitive sensing plate 5 is responded to, when finger slides in slip key zone 702, can obtain a continually varying electrical effect, be equivalent to respond the result of continuous action.For click keys district 701, can form by the independent sensing chip in the sensing chip array 4 on the capacitive sensing plate 5 of portion's opposite position within it, also can form by a plurality of sensing chips.

Embodiment 1

As shown in Figure 4, the situation when accepting writing pencil 8 inputs for this device has been drawn a pentagram with the writing pencil 8 of this matched with devices on liquid crystal display 1,

According to the principle of electromagnetic induction, the resonance coil in the writing pencil 8 is sensed the higher hamonic wave that coil sends on the antenna plate of liquid crystal display 1, will produce resonance signal; After resonance signal is received by the receiving coil on the antenna plate of liquid crystal display 1, amplify the back through amplifying circuit and signal decomposition is become amplitude and phase angle by the mlultiplying circuit on the control panel 2, and the processor 3 that is input on the control panel 2 is handled, calculate X, Y coordinate and the pen pressure at that time of pen, and star-like track drawn on the liquid crystal display 1 directly is presented on the liquid crystal display 1.

The star-like pattern that shows is preserved as picture.Principle as shown in Figure 3, the click keys district 701 of operating capacitance keypad 7 and slip key zone 702, when the degree of depth of being touched at capacitance key plate 7 when finger reaches the setting threshold of each sensing chip of sensing chip array 4, people's bulk electric field can produce the coupling capacitance effect at each sensing chip of sensing chip array 4, and the relative trigger signal can be delivered to processor 3 places that are solidificated in equally on the capacitive sensing plate 5.

Processor 3 is converted into these trigger pips key information and is delivered to control panel 2 by SPI interface or IIC interface, control panel 2 transmits by the USB interface agreement, keyed information is passed to liquid crystal display 1, promptly preserve the operation of this star-like picture, and the result is presented on the liquid crystal display 1, simultaneously control signal corresponding is back to control panel 2 by the USB interface agreement, control panel 2 passes to processor 3 by the IIC interface with corresponding control information again, give processor 3 responses, expression is preserved successfully.

Claims

1, a kind of hand writing display device that has capacitance type touch control keys comprises shell, it is characterized in that, also comprises: capacitive sensing plate, sensing chip array, processor, control panel, antenna plate, capacitance key plate and liquid crystal display;

2, according to the described a kind of hand writing display device that has capacitance type touch control keys of claim 1, it is characterized in that: described sensing chip array, processor are solidificated on the capacitive sensing plate, carry out the signal transmission mutually.

3, according to the described a kind of hand writing display device that has capacitance type touch control keys of claim 1, it is characterized in that: described capacitance key plate comprises click keys district and slip key zone, there is the sensing chip array on the capacitive sensing plate position of keypad correspondence, and each slip key zone is corresponding with a plurality of sensing chips in the sensing chip array.

4, according to the described a kind of hand writing display device that has capacitance type touch control keys of claim 3, it is characterized in that: at least one click keys district of described capacitance key plate, corresponding enclosure position is provided with the capacitive sensing plate in the click keys district, with the capacitive sensing plate of click keys district correspondence position on be covered with at least one sensing chip.

5, according to the described a kind of hand writing display device that has capacitance type touch control keys of claim 3, it is characterized in that: the click keys district of described capacitance key plate correspondence and slip key zone and shell are in aggregates, are the concave shaped groove, or indicate with pattern.