CN1614625A - handwriting input device - Google Patents
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- CN1614625A CN1614625A CN 200410096591 CN200410096591A CN1614625A CN 1614625 A CN1614625 A CN 1614625A CN 200410096591 CN200410096591 CN 200410096591 CN 200410096591 A CN200410096591 A CN 200410096591A CN 1614625 A CN1614625 A CN 1614625A
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Abstract
The invention relates to a handwriting input device applied to an electronic device, which comprises a pen-type input device and a position identification layer. One end of the pen-type input device has an emitter and an image reading device. The emitter can emit light with a specific range of wavelength, and the image reading device can read the image transmitted by the light. The position identification layer can reflect the light and comprises a plurality of different position identification patterns which are respectively used for representing different positions. When the user uses the pen-type input device to perform handwriting input on the position identification layer, the light is reflected by the position identification layer, and the image reading device sequentially reads the images of the respective position identification patterns, so that different positions passed by the pen-type input device are obtained, and the characters or graphs input by the user through handwriting are identified.
Description
Technical field
The present invention is about a kind of hand input device, particularly about a kind of hand input device that can be applicable to the display surface of electronic installation.
Background technology
Along with science and technology progresses greatly day by day, the diversification that becomes of healing of the input media of electronic product.And in numerous input medias, except making us most familiar keyboard and mouse, input medias such as Trackpad or handwriting pad are also more and more common.Recently Trackpad and display integrate, and are applied in the electronic installations such as ATM withdrawal machine, automatic fee system and bill inquiry system, directly on display icon or literal are clicked input to allow the user.
And handwriting pad has higher reaction velocity and detection sensitivity than Trackpad, is applied to the display surface of flat computer for example or PDA(Personal Digital Assistant).Portable product such as flat computer and PDA is not only saved required space of traditional input media and volume by handwriting pad, to reach the lightening of product; And the handwriting input mode then makes the man-machine interface of electronic installation more meet the demand of hommization.
Please refer to shown in Figure 1ly, it is the synoptic diagram of an existing resistor type touch control plate (touch panel) 10.Trackpad 10 can be applicable in the electronic installation, and it comprises a current-carrying plate 12, an electrically conductive elastic rete 16 and a plurality of spacing frame glue (spacer) 14.Wherein, electrically conductive elastic rete 16 is positioned at the top of current-carrying plate 12, and 14 clampings of spacing frame glue are separated from each other current-carrying plate 12 and electrically conductive elastic rete 16 in 16 of current-carrying plate 12 and electrically conductive elastic retes.
The relative dual-side 12a and the 12b of current-carrying plate 12 are connected with different voltage level, and make the voltage gradient that produces on the current-carrying plate 12 perpendicular to Y direction among the figure.Simultaneously, the relative dual-side 16a and the 16b of this electrically conductive elastic rete 16 also are connected with different voltage level, and make the voltage gradient that produces on the electrically conductive elastic rete perpendicular to X-direction among the figure.When finger electrically conductive elastic rete 16 is exerted pressure, electrically conductive elastic rete 16 is contacted with current-carrying plate 12.To cause the voltage level distribution on current-carrying plate 12 and the electrically conductive elastic rete 16 to change.And see through the voltage level value of detecting 16 4 corner location of electrically conductive elastic rete, can infer the position that presses of finger.
It should be noted that, this resistor type touch control plate 10 is desirable not to the utmost on resolution and reaction velocity, can't fully satisfy the demand of handwriting input, the situation that input signal can't interpretation may take place when hand-written speed is very fast, therefore only be used in the touch-control input of mobile computer replacing mouse, or provide the input that clicks icon on the surface of part electronic equipment display.
Please refer to Fig. 2 A, Fig. 2 B, it is the vertical view and the sectional view of an existing handwriting pad 20; Fig. 2 B is corresponding to the a-a profile line among Fig. 2 A.As Fig. 2 B, this handwriting pad 20 comprises a transistor plate 21, a plurality of conductive area 27, an electrically conductive elastic rete 28 and spacing frame glue 29.
By Fig. 2 A, Fig. 2 B, transistor plate 21 comprises thin film transistor (TFT) 22, a plurality of signal wire 24, a plurality of sweep trace 26 and a protective seam 23 of a substrate 25, arrayed.Wherein, a plurality of signal wires 24 vertically are arranged on the substrate 25, and a plurality of sweep trace 26 is transversely arranged on substrate 25, to mark off a plurality of grids.Each thin film transistor (TFT) 22 lays respectively in these grids, and its drain D is connected to adjacent signal wire 24, and grid G is connected to adjacent scanning lines 26.Protective seam 23 covers on the substrate 25, to protect those thin film transistor (TFT)s 22, those signal wires 24 and those sweep traces 26.
A plurality of conductive area 27 are formed on the transistor plate 21, and each conductive area 27 passes protective seam 23 respectively and be connected to the source S of thin film transistor (TFT) 22, electrically connect to produce with thin film transistor (TFT) 22.Electrically conductive elastic rete 28 is positioned at the top of those conductive area 27, is spacing frame glue 29 between the two (27,28).Spacing frame glue 29 is arranged on transistor plate 21 surfaces, and is surrounded on the part on every side on its surface.
When handwriting pad 20 is exerted pressure, be example with the pointer, the part electrically conductive elastic rete 28 that is pressed contacts corresponding conductive area 27.The two (27,28) contact an electric signal of institute's conducting, are passed to the source S of corresponding thin film transistor (TFT) 22.At the same time, transistor plate 21 can see through sweep trace 26 and scan electric signal, with to the electric signal that feeds each thin film transistor (TFT) 22 by the row sampling, and by the position of the pairing thin film transistor (TFT) 22 of this electric signal of signal wire 24 interpretations, to differentiate the position that presses of pointer.
Wherein, transistor plate 21 scannings are very fast with the speed of interpretation electric signal, for example under the sweep frequency of 60Hz, only need about 16 milliseconds can finish electric signal scanning to whole thin film transistor (TFT) 22.And utilize the manufacturing technology of integrated circuit, can make transistor plate 21 have high thin film transistor (TFT) 22 and actively spend.Therefore, be enough to satisfy the demand of handwriting input on resolution and the reaction velocity.
Yet existing handwriting pad 20 utilizes the transistor plate 21 in the flat-panel screens technology, and the cost of its manufacturing still belongs to higher for input media, still is difficult to the utilization of essence on the invested in plant at present.In addition, when being arranged at the display surface of electronic installations such as flat computer or PDA(Personal Digital Assistant) when handwriting pad 20, handwriting pad 20 also is another emphasis that need consider for the influence of display quality.Display is example with the liquid crystal panel, if its surface is provided with handwriting pad 20, then the light of backlight needs just to be entered (belonging to liquid crystal panel and handwriting pad 20 respectively) through two layer crystal body tube sheets user's sight line altogether.Therefore handwriting pad 20 not only can have influence on display brightness, and even may have influence on the homogeneity of demonstration.
Existing technology is except that above-mentioned shortcoming, even also have the problem of supportive.Be that existing handwriting pad 20 all is to utilize spacing frame glue 19 or 29 to support electrically conductive elastic rete 16 or 28 shown in known resistor type touch control plate 10 shown in Figure 1 or Fig. 2 A, Fig. 2 B, and spacing frame glue 19,29 only is arranged at the part on every side of electrically conductive elastic rete 16 or 28 lower surfaces, and its central part has no to support.And electrically conductive elastic rete 16,28 adopts the materials of tool flexible nature usually, for example PET, PMMA, PC or PE... etc., and therefore when assembling, electrically conductive elastic rete 19,28 surface smoothnesss are wayward.
And, the stress that electrically conductive elastic rete 16,28 acceptance constantly presses, therefore, Trackpad 10 or handwriting pad 20 are after use after a while, the intensity of electrically conductive elastic rete 16,28 descends easily, and its flatness shows low because of the fatigue day of material behavior easily.The fatigue of materials degree of electrically conductive elastic rete 16,28 is in a single day low and when causing the current-carrying plate 12 of itself and below or conductive area 27 to separate fully, the user does not press Trackpad 10 or handwriting pad 20 promptly has the electric signal conducting, to the time, can say to be the moment that Trackpad 10 or handwriting pad 20 lives of product finish.
Therefore, for the research staff who is engaged in this case correlative technology field, there's no one who doesn't or isn't be devoted to solve the shortcoming that prior art still has, in the hope of developing the hand input device that on resolution and reaction velocity, all can satisfy the handwriting input demand.In addition, prior art also lacks a kind of display surface that can be applicable to, and does not but influence the hand input device of its display quality.Even and hand input device need have better assembling quality and steadiness, to prolong the life of product of hand input device.Then need consider cost benefit at last, make the electronic product that hand input device newly developed can be applied to be correlated with and in putting goods on the market, help the competitive power of industry.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of hand input device, has better resolution and reaction velocity.
Another object of the present invention is to provide a kind of hand input device that can be applicable to the display surface of electronic installation.
Another object of the present invention is to provide a kind of hand input device with better assembling quality.
Another object of the present invention is to provide a kind of hand input device with longer life of product.
Another object of the present invention is to provide a kind of cost-effective hand input device, make its electronic product that can be applied to be correlated with and among putting goods on the market.
The invention provides a kind of hand input device, can be applicable in the electronic installation.Hand input device of the present invention comprises a pen and a location recognition figure layer.
One end of pen has a transmitter and an image fetch device, and transmitter can be launched the light of a specific range of wavelengths, and image fetch device then can read the image that light transmitted of this specific range of wavelengths.
Transparent location recognition figure layer (position-encoding pattern layer) can make visible light penetrate, and can reflect the light of this specific range of wavelengths.In an embodiment of the present invention, location recognition figure layer is arranged at a light-passing board surface.Location recognition figure layer comprises a plurality of mutually different location recognition patterns (position-encoding pattern), respectively in order to each diverse location on this light-passing board is discerned.
When the user utilizes pen that this light-passing board is carried out handwriting input, the light that transmitter is launched can reflect via location recognition figure layer, and image fetch device can read the image of indivedual positions identification icon in regular turn, this end of learning pen thus on the light-passing board surface the diverse location of process in regular turn, and discerned the literal or the figure of user's handwriting input.
Cardinal principle of the present invention utilizes figure (individual other location recognition pattern) to give mark, coding for the diverse location of light-passing board, and these a little figures are read image, and then identifies the literal or the figure of user's handwriting input.Can be bar code in order to the figure of encoding, for example two-dimensional bar (2-D barcode) or one-dimensional bar code (1-D barcode) ... etc.
Hand input device of the present invention can be arranged on display surface.Because display is a luminous device, and utilization of the present invention to individual other location recognition pattern read image with the detecting pen the position of process.Therefore how when reading image, the light of avoiding display to send becomes the interference source that image reads, and is an emphasis of being considered in the evolution of the present invention.Introduce embodiment in the present invention about head it off.
Another emphasis of being considered in the evolution of the present invention then is how to avoid location recognition figure layer to influence the display quality of display.Therefore the present invention has also introduced related embodiment, and it be about can making visible light and penetrate and reflect the location recognition figure layer of the light of this specific range of wavelengths, and for low-index film and high refractive index layer pile up the multi-layer film structure that forms alternately.
Another emphasis of being considered in the evolution of the present invention is that hand input device of the present invention all can operate smoothly when being the various differing tilt angles of pen.Therefore the present invention has introduced the location recognition figure layer embodiment that can make light scattered reflection.
Comprehensively the above the invention provides a kind of hand input device with high resolving power and high reaction velocity, can be applicable among the electronic installation.And hand input device provided by the present invention can be arranged among the display, also can be arranged at the display surface of electronic installation, and has splendid convenience when being provided with.And hand input device provided by the present invention has the life of product longer than prior art, better assembles quality and flatness.At last, hand input device of the present invention more can be cost-effective, and the electronic product that is applied to be correlated with, and then among relevant market, have the competitive power of height.
Description of drawings
Fig. 1 is an existing resistor type touch control plate synoptic diagram;
Fig. 2 A is the vertical view of an existing handwriting pad;
Fig. 2 B is the a-a profile line side cross section view corresponding to Fig. 2 A;
Fig. 3 is a hand input device synoptic diagram of the present invention;
Fig. 4 is the one-dimensional bar code synoptic diagram;
Fig. 5 is Fig. 3 location recognition pattern 351a enlarged drawing;
The coding of Fig. 6 presentation graphs 5 location recognition pattern 351a representatives;
Fig. 7 is the a-a profile line side cross section view of Fig. 3;
Fig. 8 is the optical wavelength-light reflectivity graph of a relation of location recognition figure layer;
Fig. 9 is another embodiment of the present invention synoptic diagram;
Figure 10 is another embodiment of the present invention synoptic diagram; And
Figure 11 is another embodiment of the present invention synoptic diagram.
The figure number table of comparisons
Side 12a, 12b spacing frame glue 14,29
Electrically conductive elastic rete 16,28 side 16a, 16b
Protective seam 23 signal wires 24
Substrate 25 sweep traces 26
Conductive area 27 hand input devices 30
Light-passing board 34 location recognition figure layers 35
Location recognition pattern 351,351a, light 36
351b、351c、351d、351e、
351f, 351g, 351h and 351i
Vertical bar 37a horizontal stripe 37b
Low-index film 38 high refractive index layers 39
Embodiment
Please refer to Fig. 3, it is a hand input device of the present invention.Hand input device 30 can be applicable in the electronic installation 40, and electronic installation 40 can be for example flat computer, PDA(Personal Digital Assistant), ATM withdrawal machine, automatic fee system and bill inquiry system etc.Electronic installation 40 has a display 42, and hand input device 30 comprises a pen 32 and a transparent location recognition figure layer 35.Present embodiment is arranged at a light-passing board 34 with location recognition figure layer 35, and then is arranged at display 42 surfaces as template.
One end of pen 32 has a transmitter 321 and an image fetch device 323.Transmitter 321 can be launched the light 36 of a specific range of wavelengths, and image fetch device 323 then can read the image that the light 36 of this specific range of wavelengths is transmitted.For example, in an embodiment of the present invention, the light 36 of this specific range of wavelengths is infrared ray, and its wavelength is between 800～1300nm; And image fetch device 323 is with CCD (Charged Coupled Diode, the photoelectricity coupling diode) or the device of can be directly handling image such as CMOS (Complementary Metal-Oxide Semiconductor, complementary metal oxide semiconductor) with digital format be preferable.In an embodiment of the present invention, pen 32 has more an optical filter 325, is arranged at image fetch device 323 outsides, in order to the light beyond this specific range of wavelengths of filtering.
Transparent location recognition figure layer (position-encoding pattern layer) 35 can make that visible light penetrates, yet can reflect the light 36 of this specific range of wavelengths.Location recognition figure layer 35 comprises a plurality of mutually different location recognition patterns 351 (position-encoding pattern), respectively in order to each diverse location on the light-passing board 34 is encoded.
When the user utilizes 32 pairs of light-passing boards of pen 34 to carry out handwriting input, the light 36 that transmitter 32 is launched can be via 35 reflection of location recognition figure layer, and image fetch device 323 can read the image of indivedual positions identification icon 351 in regular turn, this end of learning pen 32 thus on light-passing board 34 surfaces the diverse location of process in regular turn, and discerned the literal or the figure of user's handwriting input.
For example, as shown in Figure 3, when the user utilizes pen 32 on light-passing board 34 during handwriting input one English alphabet " X ", pen 32 is at first in regular turn through position A, B, C, D and E, with the first stroke of handwriting input English alphabet " X ".At the same time, the light 36 that hand input device 30 can be launched by transmitter 321 is in the reflection of location recognition figure layer 35, and then reads the image of location recognition pattern 351a, 351b, 351c, 351d and 351e in regular turn.Then can detect pen 32 thus in regular turn through position A, B, C, D and E.In like manner, for second stroke of English alphabet " X ", then can be by the image that reads location recognition pattern 351f, 351g, 351c, 351h and 351i in regular turn, and then detect pen 32 in regular turn through position F, G, C, H and I.Detecting by to first and second stroke of English alphabet " X " then can identify user's handwriting input English alphabet " X ".
What deserves to be mentioned is, the location recognition pattern can be implemented with bar code, among the embodiment of Fig. 3 of the present invention position identification icon 351 with two-dimensional bar (2-D barcode) as example, and among other embodiment of the present invention, location recognition pattern 351 also can be an one dimension bar code (1-Dbarcode), as shown in Figure 4.
Cardinal principle of the present invention is that the diverse location for light-passing board 34 utilizes figure (individual other location recognition pattern 351) to give mark, coding, and these a little figures are read image, and then identifies the literal or the figure of user's handwriting input.Can be in order to the figure of encoding for example two-dimensional bar (2-Dbarcode) or one-dimensional bar code (1-D barcode) etc.
The application of one-dimensional bar code is quite general, for example is printed on front cover, invoice or the license of packing, book of extensive stock, can learn coding, the number of those article when utilizing bar code identification apparatus to shine the one-dimensional bar code of above-mentioned article.
In one embodiment of the invention, each location recognition pattern 351 is mutually different bar code (a not icon), in other words, individual other location recognition pattern 351 all is only one (specific) in hand input device 30, therefore by 351 diverse locations that can detect 32 processes of pen of these location recognition patterns of only one.
Two-dimensional bar is the another kind of figure that can encode.As shown in Figure 5, it is Fig. 3 location recognition pattern 351a enlarged drawing.In one embodiment of the invention, be with the two-dimensional bar graphical application in location recognition pattern 351.In like manner, individual other location recognition pattern 351 (individual other two-dimensional bar) all must be only one (specific) in hand input device 30.With location recognition pattern 351a is the use-pattern that example illustrates two-dimensional bar, two-dimensional bar can divide into a plurality of unit (element) and array becomes a matrix (matrix), be provided with a vertical bar (longitude bar) 37a or a horizontal stripe (latitude bar) 37b in each unit, it represents binary zero and 1 respectively.Therefore, the coding of the location recognition pattern 351a representative of Fig. 5 can be represented by Fig. 6.
In one embodiment of the invention (as Fig. 5), individual other location recognition pattern 351 is one 12 * 12 matrix, so can be provided with the individual mutually different location recognition pattern 351 of 16,777,216 (2 144 powers) on the light-passing board 14 at the most.In another embodiment, individual other location recognition pattern 351 is one 16 * 16 matrix, and it is individual that the sum of the location recognition pattern 351 that it can be provided with then can reach 268,435,456 (2 256 powers), can be applicable in the display 42 of large-size.
What deserves to be mentioned is herein, among the embodiment of above-mentioned 16 * 16 matrixes, if the area of each unit is same as the embodiment of 12 * 12 matrixes in the matrix, though then the total area of each position identification icon 351 increases, but for hand input device 30, whole detecting resolution but can not reduce.As shown in Figure 5, a move to right unit and when moving down a unit of location recognition pattern 351a, be location recognition pattern 351b, in like manner, in the embodiment of 16 * 16 matrixes, no matter each location recognition pattern 351 is towards upper and lower, left or the unit that moves right, and then becomes another different location recognition pattern 351.Therefore, the detecting resolution of hand input device 30 integral body is relevant with the area of each unit in the matrix.And in one embodiment, utilize image fetch device 323, and cooperate the two-dimensional bar that includes numerical information (binary zero and 1), and then can make and all possess fluency to the process of decoding from reading image, help the reaction velocity of hand input device 30 integral body.
This is because two-dimensional bar is a kind of figure that comprises 0 and 1 binary coding message, and the image that image fetch device 323 read is if directly be digital format, then be convenient to the follow-up processing procedure of processor, can in decode procedure, do not cause delay hand input device 30 W-response speed.
As mentioned above, in an embodiment of the present invention, hand input device 30 is applied to display 42 surfaces of electronic installation 40.Because display 42 is a luminous device, and the present invention utilizes individual other location recognition pattern 351 is read the position of image with 32 processes of detecting pen.Therefore how when reading image, the light of avoiding display 42 to send becomes the interference source that image reads, and is an emphasis of the rate of examining in the evolution of the present invention.
Find in the enforcement, because light 36 is reflected through location recognition figure layer 35 by transmitter 321, the path that returns image fetch device 323 is not long, even therefore optical filter 325 is not set, as long as the intensity of the light 36 of transmitter 321 emissions improves, then when reading image, still can distinguish to look and there emerged a other location recognition pattern 351.Another embodiment then as previously mentioned, can be at image fetch device 323 arranged outside one optical filter 325, with the light beyond this specific range of wavelengths of filtering the visible light of display 42 (for example from), and then distinguish to look to there emerged a other location recognition pattern 351 easilier when reading image.Then can make the detection sensitivity of hand input device 30 integral body promote thus.
Another emphasis of the rate of examining then is how to avoid location recognition figure layer 35 to influence the display quality of display 42 in the evolution of the present invention.With the embodiment of Fig. 3, location recognition figure layer 35 and light-passing board 34 are arranged at the surface of display 42.In another embodiment of the present invention, can directly utilize the upper substrate of display 42 to replace light-passing board 34, and directly location recognition figure layer 35 is made in the display 42 (these a little embodiments will in follow-up introduction).No matter be above-mentioned which kind of embodiment, the light that display 42 show images are sent all needs just to be entered user's sight line through location recognition figure layer 35.Therefore, when location recognition figure layer of the present invention 35 is made, need meet an optical demands-visible light is penetrated and reflect the light 36 (for example infrared ray) of specific range of wavelengths.
Please refer to Fig. 7, it is the a-a profile line side cross section view of Fig. 3.For example, in an embodiment of the present invention, location recognition figure layer 35 is a multi-layer film structure, and it is piled up alternately by low- index film 38 and 39 of high refractive index layers and forms.This multi-layer film structure can make wavelength (400～700nm) the light penetration of visible-range effectively; And, but reflected infrared (800～1300nm).Wherein, low-index film 38 can adopt different materials respectively with high refractive index layer 39, low-index film 38 can be for example SiO2, and high refractive index layer 39 can be for example TiO2 or Mb205, and can utilize the mode of sputter for example so that low-index film 38 piles up alternately with high refractive index layer 39, and form the location recognition figure layer 35 of above-mentioned multi-layer film structure.Among another embodiment, can utilize commaterial, yet,, utilize the difference of its density and cause the difference of refractive index to form low-index film 38 and high refractive index layer 39 respectively with different sputter conditions.
According to this case inventor experiment repeatedly, location recognition figure layer 35 can be 3～10 layers multi-layer film structure in the enforcement, and the thickness of location recognition figure layer 35 can be between 200nm～1500nm.In these a little embodiments, location recognition figure layer 35 all can meet above-mentioned optical demands (visible light is penetrated and reflect the light 36 of specific range of wavelengths) effectively.Wherein with the thickness of location recognition figure layer 35 having better effect when 400～800nm.
Please refer to Fig. 8, it is the optical wavelength-light reflectivity graph of a relation of location recognition figure layer.The location recognition figure layer 35 of the invention described above multi-layer film structure has optical property as shown in Figure 8 substantially.In the wavelength coverage less than 780nm, the reflectivity of light is less than 10%.And in the wavelength of the scope of wavelength 780～850nm, light reflectance promotes gradually.The wavelength of light greater than 850nm after, then light reflectance reaches more than 80%.What deserves to be mentioned is that (in 400～700nm), location recognition figure layer 35 not only has antiradar reflectivity (less than 10%) to light, and has more the penetrance more than 80% at the wavelength of visible-range.
When another emphasis of the rate of examining was considered the various differing tilt angles of pen 32 in the evolution of the present invention, hand input device 30 of the present invention all can operate smoothly.Because during the actual use of user hand input device 30, its posture that grips pen 32 varies with each individual, and as shown in Figure 3, pen 32 and light-passing board 34 planes present and are close to vertical situation and really belong to exception, and most user all has an angle of inclination when gripping pen 32.Therefore if light-passing board 34 or location recognition figure layer 35 are for being close to the plane of minute surface, then after 321 emissions of light 36 self-emission devices, can depart from the contrary and can't enter image fetch device 323 in location recognition figure layer 35 reflex time.
Therefore, in an embodiment of the present invention, location recognition figure layer 35 surface are uneven surface, can make light scattered reflection.In another embodiment of the present invention, at first light-passing board 34 surfaces are given roughening, thus, the multi-layer film structure that is formed at the location recognition figure layer 35 on light-passing board 34 surfaces also has the effect of roughening, its reflection for light 36 can be not limited to single direction, but and scattered reflection.Thus, make pen 32 when various differing tilt angles, light 36 all can reflex to image fetch device 323, and makes hand input device 30 can read the image of the location recognition pattern 351 of diverse location smoothly.
One embodiment of the invention as shown in Figure 3, it is arranged at light-passing board 34 on the surface of display 42.Display 42 can be liquid crystal panel (Liquid Crystal Panel), organic electric exciting light-emitting diode panel (OLED panel), plasma display panel (PDP) or cathode ray tube screen (CRT display) etc.Has splendid convenience when applying the present invention to above-mentioned various display 42.As shown in Figure 3, light-passing board 34 only needs directly to be placed on the surface of display 42, and itself and display fixed gets final product.The material of light-passing board 34 can be for example glass, macromolecule polymeric material (as PVE, PE etc.) or organic material, perhaps, the inorganic material (for example silicon material) of general semiconductor substrate also is another enforceable material, its character need make that light is penetrable, and the image of avoiding influencing display 42 shows.
In other embodiment of the present invention, then can directly location recognition figure layer 35 be made in the display 42.For example, be applied at present that the display 42 of flat computer or PDA(Personal Digital Assistant) is most to be liquid crystal panel.Below brief introduction location recognition figure layer 35 of the present invention is made in embodiment in the liquid crystal panel.
Please refer to Fig. 9, it is another embodiment of the present invention synoptic diagram.Liquid crystal panel 50 mainly is made of a upper substrate 52 and an infrabasal plate 54.The lower surface of upper substrate 52 is formed with black matrix (blackmatrix) 56 and colored light filter membrane layer 53.Black matrix 56 can be separated red filter coating 53R, green filter film 53G in the colored light filter membrane layer 53 and blue filter coating 53B.Under black matrix 56 and colored light filter membrane layer 53 then is common electrode 51.Its material can be conducted electricity and light-permeable, for example indium tin oxide (ITO) or indium-zinc oxide (IZO).
In the present embodiment, location recognition figure layer 35 is arranged at the lower surface of upper substrate 52, and is arranged between upper substrate 52 and the black matrix 56, and as shown in Figure 9, it is by being coated by black matrix 56.Compared to Fig. 3 embodiment, present embodiment above substrate 52 has replaced the light-passing board 34 of Fig. 3 embodiment, in advance location recognition figure layer 35 is arranged among the liquid crystal panel 50.The user can directly carry out handwriting input to liquid crystal panel 50 by pen 32, or clicks input for liquid crystal panel 50 shown icon or literal.
What deserves to be mentioned is that present embodiment can give roughening to upper substrate 52 lower surfaces that are provided with location recognition figure layer 35, make the light 36 of pen 32 emissions can be not limited to single direction in the reflection of location recognition figure layer 35, but and scattered reflection.With when the pen 32 various differing tilt angles, hand input device 30 of the present invention all can operate smoothly.
Please refer to Figure 10, it is another embodiment of the present invention synoptic diagram.The similar embodiment shown in Figure 9 of present embodiment, it also is arranged at upper substrate 52 lower surfaces with location recognition figure layer 35 in advance, and makes location recognition figure layer 35 be positioned among the liquid crystal panel 50.
What be different from Fig. 9 embodiment is: the location recognition figure layer 35 of present embodiment is not only to be arranged between upper substrate 52 and the black matrix 56, and is provided with location recognition figure layer 35 between upper substrate 52 and colored light filter membrane layer 53 yet.
The set-up mode of Fig. 9 embodiment mainly is the display quality that is conceived to liquid crystal panel 50, and location recognition figure layer 35 is arranged among the black matrix 56 of " non-light-emitting area ", the influence that makes the image of 35 pairs of liquid crystal panel 50 of location recognition figure layer show thus drops to minimum.
Yet location recognition figure layer 35 provided by the present invention has height for visible light and wears rate (more than 80%), even embodiment therefore as shown in figure 10, liquid crystal panel 50 still can normally be brought into play the usefulness of demonstration.
Please refer to Figure 11, it is another embodiment of the present invention synoptic diagram.Present embodiment display position identification figure layer 35 is arranged at the situation in the liquid crystal panel 60 of COA (Color filter On Array) pattern.
The liquid crystal panel 60 of present embodiment is the COA pattern, is different from the typical liquid crystal panel 50 shown in Fig. 9 and Figure 10 embodiment.Wherein, location recognition figure layer 35 is arranged at upper substrate 62 lower surfaces, and between upper substrate 62 and common electrode 61.Utilize upper substrate 62 to replace light-passing board 34 among Fig. 3 embodiment, and location recognition figure layer 35 is arranged in the liquid crystal panel 50.
Comprehensively the above the invention provides a kind of hand input device with high resolving power and high reaction velocity, can be applicable among the electronic installation.And hand input device provided by the present invention can be arranged among the display, also can be arranged at the display surface of electronic installation, and has splendid convenience when being provided with.
Utilize spacing frame glue 19 or 29 to support electrically conductive elastic rete 16 or 28 compared to existing handwriting pad 20 shown in existing resistor type touch control plate 10 shown in Figure 1 or Fig. 2 A, Fig. 2 B.And Trackpad 10 or handwriting pad 20 are after use after a while, the possibility of result of constantly accepting to press stress causes the fatigue of materials of electrically conductive elastic rete 16,28, and cause the current-carrying plate 12 or the conductive area 27 of itself and below to separate fully, cause the end of life of product.
By contrast, hand input device 30 of the present invention does not utilize the principle of electric signal conducting to detect the hand-written defeated signal of doing of side because be, therefore, the user does not only need actual pressure to contact the surface of light-passing board 34 or display 42 when carrying out handwriting input, and the present invention does not have impermanent shortcoming of prior art products life-span yet.Therefore the invention provides a kind of hand input device with longer life of product.
In addition, do not touch, therefore do not have the uppity problem of electrically conductive elastic rete 16,28 flatness of flexible nature in the prior art yet because hand input device 30 of the present invention does not need light-passing board 34 or display 42 pressed.Therefore, the invention provides a kind of hand input device with better assembling quality.
Further compare with the prior art of Fig. 2, because hand input device 30 of the present invention do not need the higher transistor plate of use cost 21, and the light-passing board among the present invention 34 can have better light penetration rate than the transistor plate 21 of Fig. 2.Therefore the present invention not only provides cost-effective hand input device, and can be applied to the electronic product of being correlated with and among putting goods on the market, help the lifting of industrial competitiveness.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410096591 CN1614625A (en) | 2004-12-03 | 2004-12-03 | handwriting input device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410096591 CN1614625A (en) | 2004-12-03 | 2004-12-03 | handwriting input device |
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|---|---|
| CN1614625A true CN1614625A (en) | 2005-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN 200410096591 Pending CN1614625A (en) | 2004-12-03 | 2004-12-03 | handwriting input device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100478861C (en) * | 2006-06-12 | 2009-04-15 | 极鼎科技股份有限公司 | Optical input device |
| CN104076553A (en) * | 2014-03-13 | 2014-10-01 | 友达光电股份有限公司 | Substrate structure and display panel |
| CN105446550A (en) * | 2014-08-20 | 2016-03-30 | 联想(北京)有限公司 | Input device, positioning method of input device, electronic equipment and input system |
| CN110888255A (en) * | 2019-11-19 | 2020-03-17 | 深圳市华星光电半导体显示技术有限公司 | Display device |
-
2004
- 2004-12-03 CN CN 200410096591 patent/CN1614625A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100478861C (en) * | 2006-06-12 | 2009-04-15 | 极鼎科技股份有限公司 | Optical input device |
| CN104076553A (en) * | 2014-03-13 | 2014-10-01 | 友达光电股份有限公司 | Substrate structure and display panel |
| CN104076553B (en) * | 2014-03-13 | 2017-06-06 | 友达光电股份有限公司 | Substrate structure and display panel |
| CN105446550A (en) * | 2014-08-20 | 2016-03-30 | 联想(北京)有限公司 | Input device, positioning method of input device, electronic equipment and input system |
| CN105446550B (en) * | 2014-08-20 | 2019-03-08 | 联想(北京)有限公司 | Input unit and its localization method, electronic equipment and input system |
| CN110888255A (en) * | 2019-11-19 | 2020-03-17 | 深圳市华星光电半导体显示技术有限公司 | Display device |
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