TW201413510A - Touch pen - Google Patents

Abstract

A touch pen includes a shell and a contact-sensing module. The contact-sensing module including a moving element, an elastic element, a light-emitting element and a light sensor, is arranged in a receiving space of the shell. The moving element has a light-transmissive layer and a light-blocking layer. The elastic element is arranged between the moving element and the bottom of the receiving space. The light sensor is arranged on the inner-wall of the shell. At the first status, the elastic element is compressed by an external force, so that the light-transmissive layer is located in front of the light sensor, thereby the light sensor detects a light signal through the light-transmissive layer to trigger the light-emitting element to turn on. At the second status, the elastic element pushes the moving element, so that the light-blocking layer is located in front of the light sensor to block the light signal.

Description

Stylus

The invention relates to a stylus, in particular to a stylus suitable for light-sensitive touch technology.

Please refer to FIG. 1 , which is a schematic diagram of a tip end 110 of a conventional light-sensitive stylus 100 . A chamber 120 is disposed at the tip end 110 of the light-sensitive stylus 100 to accommodate the light-emitting element 130, the magnetic moving member 140, and the magnetic holder 150. The light emitting element 130 is fixedly coupled to the magnetic moving member 140. The magnetic moving member 140 and the magnetic fixing member 150 have the same magnetic pole and are disposed in the magnetic effective range therebetween, so that the light-emitting element 130 is kept protruding from the tip end due to the repulsive magnetic force between the magnetic moving member 140 and the magnetic fixing member 150. 110 outside. At this time, the light-emitting element 130 is disconnected from the power supply line (not shown) without emitting light.

When the touch-sensitive input device (such as a touch panel, a touch panel, or an electronic whiteboard) touch input is performed, the light-emitting component 130 abuts the touch device to the interior of the chamber 120. The displacement causes the magnetic moving member 140 to be displaced toward the magnetic fixing member 150. At this time, the light-emitting element 130 is electrically connected to a power supply line (not shown) to emit light.

That is, in order to electrically connect the light-emitting element 130 to the power supply line, an external force must be applied to the light-emitting element 130 to overcome the repulsive magnetic force between the magnetic moving member 140 and the magnetic fixing member 150. However, due to the action of the repulsive magnetic force, the user must continue to output a force greater than the magnetic force that can overcome the repulsive force. Failure to continue to output a certain amount of power will result in The light-emitting element 130 cannot continuously emit light, and the touch signal sensed by the touch device is discontinuous.

Moreover, when the reverse force is encountered, the power output by the user is generally gradually increased, so that it takes a certain period of time to overcome the repulsive magnetic force, so that the user cannot immediately detect the touch device due to the touch action. The light-emitting element 130 is sensed to perform a corresponding operation.

Moreover, when the touch-sensitive input is performed on the touch device by the light-sensitive stylus 100, not only the touch position but also a certain output force is maintained, so that the touch position is inaccurate in operation.

In view of the above problems, the present invention provides a stylus for solving the problems of slow reaction time, inaccurate operation, and the like caused by the resetting of the light-emitting element by the magnetic element in the prior art.

An embodiment of the invention provides a stylus comprising a housing and a contact sensing module.

The housing includes an accommodation space, an opening, and an inner wall of the pen tip. The accommodating space includes a top end and an opposite bottom end. The opening is located at the top of the accommodating space. The inner wall of the pen tip extends from the opening and surrounds the accommodating space.

The contact sensing module is disposed in the accommodating space of the housing, and includes a moving member, an elastic member, a light emitting component, and a light sensor. The moving member includes a light transmitting layer and a light blocking layer that are connected to each other. The elastic member is disposed between the moving member and the bottom end of the accommodating space, wherein the light blocking layer is located at the phase Adjacent to one side of the elastic member. The light emitting element is disposed on the light transmissive layer of the moving member to emit light in a direction away from the light transmissive layer when activated.

The light sensor is disposed on the inner wall of the pen tip of the housing. In the first state, the elastic member is compressed by an external force, so that the light transmitting layer is located in front of the light sensor, and the light sensor detects the light signal passing through the light transmitting layer, and triggers the light emitting element to start. In the second state, the elastic member provides thrust to the moving member such that the light blocking layer is located in front of the photo sensor, and the blocking photo sensor receives the optical signal, and the light emitting element is turned off.

The stylus suitable for the light-sensitive touch technology according to the present invention can determine whether the stylus is performing a touch input operation according to whether the mobile device blocks the optical signal or not, thereby causing the illuminating element to emit light, which can improve the utilization of the prior art. The shortcomings of magnetic components have the advantages of fast reaction time, high light-emitting stability, and smooth operation.

2 is a perspective view of a stylus pen 200 according to a first embodiment of the present invention. 3 is a schematic view of the tip end 210 of the stylus pen 200 according to the first embodiment of the present invention (ie, a cross-sectional view taken along line A-A of FIG. 2).

Referring to FIG. 2 and FIG. 3, a stylus 200 suitable for optical sensing touch technology is illustrated. The stylus 200 includes a housing 220 and a contact sensing module 230. The housing 220 includes an accommodating space 221, an accommodating space 222, an opening 223, a pen inner wall 224, and a pen inner wall 225.

The accommodating space 221 includes a top end 2211 and an opposite bottom end 2212. The opening 223 is located at the top end of the accommodating space 221. The inner wall 224 of the pen extends from the opening 223 and surrounds the accommodating space 221. That is, the opening 223 is located at the tip end 210 of the stylus pen 200. The top portion is formed by the inner wall 224 of the pen tip end 210 to accommodate the contact sensing module 230.

Here, the inner wall 224 of the pen head may include a top wall portion 2241, a side wall portion 2242, and a bottom wall portion 2243. The top wall portion 2241 is disposed opposite to the bottom wall portion 2243, and the side wall portion 2242 is interposed between the top wall portion 2241 and the bottom wall portion 2243, and is in contact with the edge of the top wall portion 2241 and the edge of the bottom wall portion 2243, thereby The wall portion 2241, the side wall portion 2242, and the bottom wall portion 2243 together form an accommodation space 221.

In some embodiments, the top wall portion 2241, the side wall portion 2242, and the bottom wall portion 2243 are integrally formed.

In some embodiments, the bottom wall portion 2243 is movably coupled to the sidewall portion 2242. For example, the bottom wall portion 2243 may be a single body, and the side wall portion 2242 may have an annular groove to fit and fix the bottom wall portion 2243.

As shown in FIG. 3 , the contact sensing module 230 is disposed in the accommodating space 221 of the housing 220 . The touch sensing module 230 includes a moving member 231 , an elastic member 232 , a light emitting element 233 , and a light sensor 234 . In the present embodiment, the elastic member 232 is exemplified by a spring. However, the present invention is not limited thereto. The elastic member 232 may also be an elastic thin plate (ie, a spring piece), which can be deformed by external force and then restored to its original state.

The moving member 231 includes a light transmissive layer 2311 and a light blocking layer 2312 that are connected to each other. The elastic member 232 is disposed between the moving member 231 and the bottom end 2212 of the accommodating space 221, wherein the light blocking layer 2312 is located on one side of the adjacent elastic member 232. The light-emitting element 233 is disposed on the light-transmitting layer 2311 of the moving member 231 to emit light in a direction away from the light-transmitting layer 2311 when activated. That is, the light-emitting element 233, the light-transmitting layer 2311, the light-blocking layer 2312, and the elastic member 232 are sequentially directed toward the bottom end 2212 of the accommodating space 221 along the opening 223. The connecting portion (ie, the compression direction of the elastic member 232) is connected, and is fixedly connected to the bottom end 2212 of the accommodating space 221 at the end of the elastic member 232. The elastic member 232 can be fixedly connected to the bottom wall portion 2243 (ie, the bottom end 2212 of the accommodating space 221) by means of bonding, locking, snapping or the like.

In the present embodiment, as shown in FIG. 2, the shape of the opening 223 is circular, but the embodiment of the present invention is not limited thereto, and may be other geometric shapes or the shape of the light-emitting element 233.

Fig. 4 is a schematic view showing the activation of the trigger light-emitting element 233 according to the first embodiment of the present invention (i.e., a cross-sectional view taken along line A-A of Fig. 2).

Refer to Figures 3 and 4 for the merger. The photo sensor 234 is disposed on the inner wall 224 of the inner surface of the housing 220, that is, the photo sensor 234 is disposed on the side wall portion 2242 of the inner wall 224 of the pen head. In the first state, as shown in FIG. 4, the elastic member 232 is compressed by an external force, so that the light transmissive layer 2311 is located in front of the photo sensor 234, and the photo sensor 234 detects the light transmissive layer 2311. The optical signal L, while the triggering light-emitting element 233 is activated to emit light. In the second state, the aforementioned external force disappears (or weakens). As shown in FIG. 3, the thrust provided by the elastic member 232 to the moving member 231 causes the light-emitting element 233 to protrude from the opening 223, and the light-blocking layer 2312 is positioned in the light. The sensor 234 is forward, and the blocking photo sensor 234 receives the optical signal L, at which time the light-emitting element 233 is turned off without emitting light. Thereby, whether or not the light-emitting element 233 is displaced inward by the touch pen 200 against the touch device is used as a basis for causing the light-emitting element 233 to emit light.

Here, the light-emitting element 233 may be a light-emitting element that can control the light-emitting or the like, such as a light-emitting diode or a laser diode. As shown in FIG. 3, the light-emitting element 233 is a light-emitting diode having a light-emitting diode chip 2331 and a light-emitting diode chip 2331. Light transmissive layer 2332.

FIG. 5 is a schematic diagram of a control circuit 240 of the stylus 200 according to the first embodiment of the present invention, which is used to explain how the photo sensor 234 triggers the activation of the light-emitting element 233.

Referring to FIGS. 4 and 5, the stylus 200 further includes a control circuit 240. Control circuit 240 includes a trigger switch 241 and a power source 242. The trigger switch 241 includes a first end 2411, a second end 2412, and a control end 2413. The first end 2411 is electrically connected to the power source 242. The second end 2412 is electrically connected to the light emitting element 233. The control terminal 2413 is electrically connected to the photo sensor 234 for receiving the electrical signal S generated by the photo sensor 234 according to the received optical signal L. The trigger switch 241 makes the first end 2411 and the first according to the electrical signal S. The two terminals 2412 are turned on to enable the light emitting element 233 to receive power from the power source 242 to be activated.

In some embodiments, an amplification unit 243 is further connected between the photo sensor 234 and the trigger switch 241 for amplifying the electrical signal S and outputting to the trigger switch 241 so that the electrical signal S can be amplified to meet the trigger switch 241. The voltage value that can be detected. Here, the amplifying unit 243 may be, for example, an operational amplifier.

In some embodiments, the power source 242 can be placed in the housing space 222 formed by the inner wall 225 of the pen. Moreover, the bottom wall portion 2243 of the inner wall 224 of the pen head may have at least one opening for the conductive line connected between the power source 242 and the light-emitting element 233 to pass through the bottom wall portion 2243.

Herein, the power source 242 can be a zinc-manganese battery, an alkali manganese battery, a carbon zinc battery, a hydrogen-oxygen battery, a nickel-hydrogen battery, a lithium battery, or a photovoltaic battery, etc., for the internal electronic components of the stylus 200 (such as the light-emitting element 233). , light source element 235, etc.) provide power. The trigger switch 241 can be an electronic switching element composed of at least one transistor.

Referring to FIG. 3 and FIG. 4, the contact sensing module 230 further includes a light source component 235 disposed on the inner wall 224 of the housing 220 and located opposite the photo sensor 234 for outputting the optical signal L. .

Here, the control circuit 240 may further include a power switch (not shown) to determine whether to supply power to the light source element 235 according to the power supply 242 according to the opening and closing of the power switch, and to control whether the light source element 235 outputs the optical signal L. In other words, when the user wants to use the stylus pen 200, the power switch needs to be turned on first. At this time, the light source component 235 continuously outputs the light signal L, and when the user touches the stylus pen 200 against the top touch device, the light sensor is sensed. After detecting the optical signal L, the light-emitting element 233 can emit light.

Fig. 6 is a schematic view showing the tip end 210 of the stylus pen 200 according to the second embodiment of the present invention (i.e., a cross-sectional view taken along line A-A of Fig. 2).

Referring to FIG. 6 , the stylus 200 of the present embodiment is substantially the same as the first embodiment. The difference is that the housing 220 of the embodiment further includes a light transmission hole 226 disposed on one side of the opposite light sensor 234. The light source L is formed by the light source outside the casing 220. That is to say, in the first embodiment, the light source L is generated by the light source element 235. In this embodiment, the light source L is formed by the light source outside the housing 220 through the light transmission hole 226.

The housing 220 further includes a condensing mirror (not shown) disposed on the light transmission hole 226 to polymerize the light source outside the housing 220 to generate a stronger optical signal L than when the condensing mirror is not disposed.

In some embodiments, the housing 220 can include the aforementioned light-transmitting holes 226 disposed on one side of the opposite photo sensor 234 for the light source outside the housing 220 to pass through to form the optical signal L. At the same time, the contact sensing module 230 further includes the foregoing light source component 235. And a light detection module (not shown). The light source component 235 is disposed on the inner wall 224 of the housing 220 and opposite to the photo sensor 234 for outputting another optical signal L. The light detecting module is disposed at an external light source (such as the outside of the housing 220) for receiving the stylus 200, for detecting the ambient light intensity and selectively turning on the light source element 235. That is to say, when the ambient light intensity is sufficient to be detected by the light detecting module 238, the light source element 235 may not be turned on, and when the ambient light intensity is insufficient, the light source element 235 is turned on.

Fig. 7 is a schematic view showing the tip end 210 of the stylus pen 200 according to the third embodiment of the present invention (i.e., a cross-sectional view taken along line A-A of Fig. 2).

Referring to FIG. 7 , the stylus 200 of the present embodiment is substantially the same as the first embodiment. The difference is that the touch sensing module 230 of the embodiment further includes a filter 236 . The filter 236 is attached to the light transmissive layer 2332 and has a transmittance that gradually decreases in the compression direction of the elastic member 232. That is to say, the filter 236 has a gradation pattern from light to dark, so that the optical signal L changes the optical signal of the optical sensor 234 according to the different transmittance position of the filter 236 according to the magnitude of the external force. The size of L (ie, the optical signal L'). The light-emitting element 233 outputs a corresponding amount of light according to the magnitude of the light signal L' detected by the light sensor 234. When the force of the stylus 200 against the top touch device is small, the amount of displacement of the moving member 231 is small, so that the optical signal L is directed toward the filter 236 having a position with a small transmittance, and the light sensor 234 The received optical signal L' is smaller. On the other hand, when the force of the stylus 200 against the top touch device is large, the amount of displacement of the moving member 231 is large, so that the optical signal L is directed toward the filter 236 to have a position with high transmittance, and the light is sensed. The optical signal L' received by the device 234 is larger. Therefore, when the light emitted by the light-emitting element 233 changes with the light signal L' received by the light sensor 234, the touch device can The amount of light that is changed by the stylus pen 200 according to the magnitude of the user's output is received, and the touch device can display the change of the stroke strength in a visual or auditory manner.

Here, the filter 236 of the present embodiment can also be applied to the foregoing second embodiment.

Figure 8 is a schematic diagram of a control circuit 240 of the stylus 200 in accordance with a third embodiment of the present invention.

As shown in FIG. 8, the control circuit 240 of the first embodiment is substantially the same as the control circuit 240 of the first embodiment. The difference is that the control circuit 240 of the present embodiment further includes a control unit 244 and a light amount modulation unit 245. The control unit 244 is connected between the photo sensor 234 (or the amplifying unit 243) and the trigger switch 241 to cause the trigger switch 241 to be turned on according to the received electrical signal S. The control unit 244 is also connected to the light amount modulation unit 245 to adjust and output the control signal to the light amount modulation unit 245 according to the electrical signal S. The light amount modulation unit 245 is electrically connected between the trigger switch 241 and the light emitting element 130 for adjusting the voltage or/and current from the power source 242 according to the control signal K to control the light intensity of the light emitting element 130.

Here, the control unit 244 can be substantially a microprocessor. The light amount modulation unit 245 can be substantially a current limiting element such as a variable resistor, a transistor, or the like.

Fig. 9 is a schematic view showing the tip end 210 of the stylus pen 200 according to the fourth embodiment of the present invention (i.e., a cross-sectional view taken along line A-A of Fig. 2).

As shown in Fig. 9, in the present embodiment, the elastic member 232 is realized by the elastic thin plate 237 as compared with the first embodiment. The elastic thin plate 237 has a reversible bulging portion 2371 and a connecting portion 2372 located on the bulging portion 2371. The connecting portion 2372 is for connecting the moving member 231. In the second state, the bulging portion 2371 is inverted and recessed, and In the first state described above, the bulging portion 2371 is restored to the original state, and the moving member 231 is reset. Here, the bulging portion 2371 can be substantially circular, and the connecting portion 2372 is located at the center of the bulging portion 2371. The elastic sheet 237 can be made of rubber, plastic, metal or the like.

Fig. 10 is a view showing the relationship between the force and the displacement of the elastic thin plate 237 according to the fourth embodiment of the present invention, showing that the design of the bulging portion 2371 allows the force to have a nonlinear relationship with the displacement, thereby allowing the user to When the stylus 200 is pressed against the touch device, it can have a tactile feedback feeling.

Here, the elastic sheet 237 of the present embodiment can also be applied to the foregoing second or third embodiment.

In the embodiment of the present invention, the photo sensor 234 and the photodetection module can be realized by a photoelectric conversion element such as a photodiode or a photoelectric crystal.

In summary, according to the stylus suitable for the light-sensitive touch technology of the present invention, whether the stylus pen 200 is performing a touch input action can be determined according to whether the moving component 231 blocks the optical signal L or not, thereby causing the light-emitting component The illumination of 130 can improve the disadvantages of utilizing the magnetic component described in the prior art, and has the advantages of fast reaction time, high light-emitting stability, and smooth operation. Moreover, by adding the filter 236, the force written by the user using the stylus pen 200 can be further detected. Moreover, the ambient light can be further used as the light source for detecting the displacement of the moving member 231 through the transparent hole 226, thereby saving the power supply 242.

While the present invention has been described above in the foregoing embodiments, it is not intended to limit the invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. The scope of patent protection shall be subject to the definition of the scope of the patent application attached to this specification.

100‧‧‧Light-sensitive stylus

110‧‧‧ pen end

120‧‧ ‧ room

130‧‧‧Lighting elements

140‧‧‧Magnetic moving parts

150‧‧‧Magnetic fasteners

200‧‧‧ stylus

210‧‧‧ pen end

220‧‧‧shell

221, 222‧‧‧ accommodating space

2211‧‧‧Top

2212‧‧‧ bottom

223‧‧‧ openings

224‧‧‧ pen inner wall

2241‧‧‧Top wall

2242‧‧‧ Side wall

2243‧‧‧ bottom wall

225‧‧‧ pen wall

226‧‧‧Light hole

230‧‧‧Contact Sensor Module

231‧‧‧Mobile parts

2311‧‧‧Transparent layer

2312‧‧‧Light barrier

232‧‧‧Flexible parts

233‧‧‧Lighting elements

2331‧‧‧Lighting diode chip

2332‧‧‧Transparent layer

234‧‧‧Photosensor

235‧‧‧Light source components

236‧‧‧Filter

237‧‧‧Flexible sheet

2371‧‧‧Bulging

2372‧‧‧Connecting Department

240‧‧‧Control circuit

241‧‧‧ trigger switch

2411‧‧‧ first end

2412‧‧‧ second end

2413‧‧‧Control terminal

242‧‧‧Power supply

243‧‧‧Amplification unit

244‧‧‧Control unit

245‧‧‧Light Modulation Unit

L, L’‧‧‧ Optical Signal

S‧‧‧Telephone

K‧‧‧ control signal

FIG. 1 is a schematic diagram of a tip end of a conventional light-sensitive stylus.

2 is a perspective view of a stylus according to a first embodiment of the present invention.

Fig. 3 is a view showing the tip end of the stylus according to the first embodiment of the present invention.

Fig. 4 is a view showing the activation of the trigger light-emitting element according to the first embodiment of the present invention.

Fig. 5 is a schematic diagram showing a control circuit of a stylus according to a first embodiment of the present invention.

Fig. 6 is a schematic view showing the tip end of a stylus according to a second embodiment of the present invention.

Fig. 7 is a view showing the tip end of a stylus according to a third embodiment of the present invention.

Figure 8 is a schematic diagram of a control circuit of a stylus according to a third embodiment of the present invention.

Figure 9 is a schematic view showing the tip end of a stylus according to a fourth embodiment of the present invention.

Fig. 10 is a graph showing the relationship between the force and the displacement of the elastic thin plate according to the fourth embodiment of the present invention.

210‧‧‧ pen end

220‧‧‧shell

221, 222‧‧‧ accommodating space

2211‧‧‧Top

2212‧‧‧ bottom

223‧‧‧ openings

224‧‧‧ pen inner wall

2241‧‧‧Top wall

2242‧‧‧ Side wall

2243‧‧‧ bottom wall

225‧‧‧ pen wall

230‧‧‧Contact Sensor Module

231‧‧‧Mobile parts

2311‧‧‧Transparent layer

2312‧‧‧Light barrier

232‧‧‧Flexible parts

233‧‧‧Lighting elements

2331‧‧‧Lighting diode chip

2332‧‧‧Transparent layer

234‧‧‧Photosensor

235‧‧‧Light source components

L‧‧‧Optical signal

Claims (10)

A stylus comprising: a housing comprising: an accommodating space comprising a top end and an opposite bottom end; an opening at the top end of the accommodating space; and a head inner wall extending from the opening And surrounding the accommodating space; and a contact sensing module disposed in the accommodating space of the housing, comprising: a moving component, comprising a light transmissive layer and a light blocking layer connected to each other; an elastic component, setting Between the moving member and the bottom end of the accommodating space, wherein the light blocking layer is located adjacent to one side of the elastic member; a light emitting element is disposed on the light transmissive layer of the moving member to be Illuminating in a direction away from the light transmissive layer when starting; and a light sensor disposed on the inner wall of the pen head of the housing, in a first state, the elastic member is compressed by an external force, so that the through The light layer is located in front of the light sensor, the light sensor detects an optical signal passing through the light transmissive layer, and triggers the light emitting element to start. In a second state, the elastic member provides the moving element Thrusting, the light blocking layer is located in front of the light sensor, and blocking the light sensing Receiving the optical signal, the light emitting element is turned off. The stylus of claim 1, wherein the illuminating element protrudes from the opening in the second state. The stylus according to claim 1, wherein the touch sensing module further comprises: a filter having a transmittance gradually decreasing along a compression direction of the elastic member, The light filter is attached to the light transmissive layer, so that the optical signal changes the size of the optical signal that is directed to the photosensor through different transmittance positions of the filter according to the magnitude of the external force. The component outputs a corresponding amount of light according to the magnitude of the optical signal detected by the photo sensor. The stylus according to claim 1, wherein the elastic member is an elastic thin plate having a reversible bulging portion. In the second state, the bulging portion is reversed and recessed. In the state, the bulging portion is restored to its original state. The stylus according to claim 1, wherein the elastic member is a spring. The stylus according to claim 1, further comprising: a trigger switch, comprising: a first end electrically connected to a power source; a second end electrically connected to the light emitting element; and a control end, the electric Connected to the optical sensor to receive the electrical signal generated by the optical sensor according to the received optical signal, the trigger switch turns on the first end and the second end according to the electrical signal, The light-emitting element is activated by receiving power from the power source. The stylus according to claim 1, wherein the touch sensing module further comprises: a light source component disposed on the inner wall of the tip of the housing and located at an opposite side of the photo sensor for outputting The optical signal. The stylus of claim 1, wherein the housing further comprises: a light-transmissive hole disposed on a side opposite to the light sensor for forming a light signal through the light source outside the housing . The stylus of claim 8, wherein the housing further comprises: a concentrating mirror disposed on the light transmission hole to generate a light signal by concentrating a light source outside the housing. The stylus according to claim 1, wherein the housing further comprises a light-transmissive hole disposed on a side opposite to the photosensor for the light source outside the housing to form the optical signal. The contact sensing module further includes a light source component and a light detecting module. The light source component is disposed on the inner wall of the pen head of the housing and is located opposite the photo sensor for outputting another light. The light detecting module is configured to detect an ambient light intensity and selectively activate the light source component.