TWM516191U - Projection screen having touch panel - Google Patents

Description

Projection screen with touch function

This new type of creation is related to the field of interactive teaching, especially a projection screen with touch function.

In recent years, interactive whiteboards have been widely used in conference discussions and teaching demonstrations. Among them, the Ministry of Education promoted the “Information Integration Teaching ITC Project” in 2007, and fully subsidized hundreds of national high schools in 15 counties and cities. The introduction of interactive whiteboards with the National Elementary School enables teachers to enhance teaching efficiency through interactive whiteboards.

Please refer to FIG. 1 , which is an architectural diagram of an interactive whiteboard system. As shown in the first figure, a conventional interactive whiteboard system 1 ′ includes: a computer host 11 ′, a projection device 12 ′, and a An interactive whiteboard 13' and a stylus 14', wherein the projection device 12' and the interactive electronic whiteboard 13' are respectively connected to the computer through a VGA connection cable and a USB connection cable 11'. In this way, through the interactive whiteboard system 1', the instructor or the reporter can store the report data in the computer host 11' in advance, and then report the report data to the interactive device through the projection device 12'. The electronic whiteboard 13', and the teacher or the reporter can further touch the interactive electronic whiteboard 13' with the stylus 14', and write or draw on the interactive electronic whiteboard 13' to achieve an interactive The effect of the report.

Since the interactive whiteboard system 1' has the advantages of being easy to install and easy to use, the interactive whiteboard system 1' has been widely used in conference discussions and teaching demonstrations; among them, it is applied to an interactive whiteboard system. 1' interactive whiteboard 13' can be divided into several categories: infrared sensor, electromagnetic induction, pressure sensing, etc., and different types of interactive whiteboard 13's work differently:

(1) Infrared-sensitive interactive whiteboard: A plurality of infrared sensors are arranged around the electronic whiteboard to form an infrared scanning network around the electronic whiteboard. The disadvantage is that a special specification electronic whiteboard must be used to accurately position the stylus on the electronic whiteboard; however, due to the complicated process of the infrared-sensitive interactive electronic whiteboard, the application of the large-sized electronic whiteboard is On the other hand, the price of fear is not high.

(2) Electromagnetic inductive interactive whiteboard: an induction coil must be placed in the electronic whiteboard and used with a sensor pen to accurately exchange information between the induction coil and the sensor pen. The position of the sensor pen on the electronic whiteboard; similarly, due to the complicated process of the electromagnetic induction type interactive whiteboard, the application of the large-sized electronic whiteboard is not expensive.

(3) Pressure-sensitive interactive whiteboard: a resistive film and a conductive film are to be placed in the electronic whiteboard, wherein when a stylus or a finger is pressed on the electronic whiteboard, the conductive film at the pressing place Contacting the resistive film generates an electronic signal, and accurately positions the stylus or the finger on the electronic whiteboard through the electronic signal. Therefore, through the above, it can be known that the process of the pressure-sensitive interactive electronic whiteboard is not easy, and the cost is not cheap in the application of the large-sized electronic whiteboard.

(4) Regardless of any of the above-mentioned interactive whiteboards 13', they are too bulky to carry and move, forcing interactive teaching providers to purchase a set of interactive whiteboards 13' at each teaching venue, resulting in interaction. The investment cost of the teaching industry is too high.

Through the above description of the mode of action of different types of interactive electronic whiteboards 13', we can know that for the interactive interactive whiteboard system 1', the biggest disadvantage is that the interactive electronic whiteboard 13' The process is complicated and expensive. In view of this, the creators of this case tried to research and create, and finally developed a projection screen with touch function to solve the shortcomings and shortcomings of the interactive interactive whiteboard system 1'.

The main purpose of the novel creation is to provide a projection screen with a touch function, wherein the creation directly attaches a transparent or opaque conductive structure to a projection screen, thereby forming the projection cloth with the touch function. screen. Obviously, compared with the conventional interactive whiteboard (infrared sensing, electromagnetic induction or pressure sensing), the projection screen with touch function of the present invention has the advantages of simple structure and low manufacturing cost. In addition, since the projection screen having the touch function of the present invention is made of a flexible material, it can be retracted by a curtain storage case; of course, the projection that is retracted in the curtain storage case The curtain is easy to be carried and moved.

In order to more clearly describe a projection screen having a touch function proposed by the present invention, a preferred embodiment of the novel creation will be described in detail below with reference to the drawings.

Please also refer to FIG. 2, which is a perspective view of a projection screen with a touch function. As shown in FIG. 2, the projection screen 1 with touch function mainly includes: a projection screen 11, a touch panel 12 and a control processing circuit 13; wherein the projection screen 11 is wound up in a curtain The housing 14 is housed, and the control processing circuit 13 is also disposed in the curtain housing case 14.

Continuing to refer to FIG. 2, and referring also to FIG. 3, a schematic plan view of the screen housing 14, the projection screen 11, the touch panel 12, and the control processing circuit 13 is shown. As shown in the figure, the touch panel 12 is attached to the projection screen 11 and projects the display area 111 with respect to one of the projection screens 11; and the control processing circuit 13 is electrically connected to the touch panel 12, At the same time, it is electrically connected to an external electronic device 2. In this manner, the electronic device 2 projects a video image on the projection display area 111 of the projection screen 11 by using an external projection device 3; at this time, when a touch behavior is applied to the projection screen 11 and When the touch panel 12 is touched, the control processing circuit 13 senses and recognizes the touch behavior, and notifies the electronic device 2 to change or adjust the video image according to the touch behavior. The touch behavior referred to herein may be zooming in, zooming out, clicking, or dragging.

Please refer to FIG. 2 and FIG. 3 again, and please refer to FIG. 4 at the same time, which is a circuit block diagram of the control processing circuit 13. As shown in the figure, the control processing circuit 13 includes at least the following circuit blocks: a detecting unit 131, a control processing unit 132 and a communication connecting unit 133; wherein the detecting unit 131 is electrically connected to the touch The panel 12 is configured to detect whether the touch panel 12 is subjected to the touch behavior, and thereby output a touch behavior detection signal. After receiving the touch behavior detection signal, the control processing unit 132 further processes and analyzes the touch behavior detection signal to identify the type of the touch behavior (enlarge, zoom out, click, or drag). Finally, the control processing unit 132 notifies the electronic device 2 through the communication connection unit 133, so that the electronic device 2 immediately changes or adjusts the video image according to the touch behavior.

2 shows that the electronic device 2 is a computer host; however, as shown in FIG. 3, based on the diversity of consumer electronic products, the electronic device 2 referred to in the novel creation may also be a notebook computer or a tablet computer. Or a smart phone. It is conceivable that the communication connection unit 133 of the control processing circuit 13 may be a wired type communication connection unit or a wireless type communication connection unit. The wired type communication connection unit is, for example, a video connection cable or a Wireless Universal Serial Bus (USB) connection cable. In addition, the wireless type of communication connection unit is more diversified, and may be a Bluetooth wireless unit, a Zigbee wireless unit, a WiFi wireless unit, or a Near Field Communication (NFC) unit.

Please refer to FIG. 5 , which is a schematic diagram of a second application example of a projection screen having a touch function. As shown in FIG. 5, when the electronic device 2 is a portable electronic product (for example, a smart phone), the projection device 3 connected to the electronic device 2 can be replaced with a pico projector. At this time, the smart phone (ie, the electronic device 2) can communicate with the control processing circuit disposed in the screen housing 14 through the Bluetooth wireless unit, the Zigbee wireless unit, the WiFi wireless unit, or the near field communication wireless unit. 13 reached a communication link. In this way, the smart phone (ie, the electronic device 2) can project a video image on the projection display area 111 of the projection screen 11 by using the pico projector; When the behavior is applied to the projection screen 11 and the touch panel 12, the control processing circuit 13 disposed in the screen storage case 14 senses and recognizes the touch behavior, and notifies the smart phone according to the touch behavior. Change or adjust the video image.

Therefore, it must be additionally noted that, in order to facilitate the user to take out (or pull out) the projection screen 11 from the curtain storage case 14, FIG. 2 and FIG. 5 show that the projection screen 11 is further connected with a bottom pull rod 16 . The utility model is convenient for the user to roll out the projection screen 11 from the curtain storage case 14. In addition, as shown in FIG. 2 and FIG. 3, a projection area 11 is further disposed on the projection screen 11 to surround the projection display area 111. Meanwhile, a frame bead 15 is disposed on the frame area 112 to prevent The projection screen 11 is warped due to multiple winding and winding. Furthermore, as shown in FIG. 3 and FIG. 5, the bottom pull rod 16 is further connected to a fixing bracket 17 for fixing the bottom rod 16 at a specific height by the fixing bracket 17, thereby pulling and stabilizing the projection screen. 11. The projection screen 11 is prevented from swinging back and forth due to the touch behavior, so that the projection screen 11 can smoothly display the video image placed by the projection device 3.

The above has explained the main components of the projection screen having the touch function of the present invention and their corresponding functions; further, the detailed configuration of the touch panel 12 will be further described below. Please refer to FIG. 6 , which is a schematic top view of the touch panel 12 . Also, please refer to FIG. 7 , which is a first implementation architecture diagram of the touch panel 12 . As shown in FIG. 6 and FIG. 7 , the touch panel 12 is a transparent or opaque conductive structure, and includes a substrate 121 and a first dielectric layer 122 formed on the upper surface of the substrate 121 . a first metal layer 123 on the first dielectric layer 122, a first anti-reflection layer 124 formed on the first metal layer 123, and a first surface formed on the lower surface of the substrate 121 The second dielectric layer 122a, a second metal layer 123a formed on the second dielectric layer 122a, and a second anti-reflection layer 124a formed on the second metal layer 123a. The first dielectric layer 122, the first metal layer 123 and the first anti-reflective layer 124 form a first metal mesh 12A on the upper surface, and the second dielectric layer 122a. The second metal layer 123a and the second anti-reflective layer 124a are formed on the lower surface of the second metal mesh 12B.

According to the above description, the first metal mesh 12A extends laterally, and the second metal mesh 12B is longitudinally extended, such that the plurality of metal wires of the first metal mesh 12A and the second metal mesh 12B The plurality of metal wires form a checkered structure that is staggered with each other (as shown in FIG. 6). Moreover, since the line widths of the metal wires of the first metal mesh 12A and the metal wires of the second metal mesh 12B are between 1 micrometer (μm) and 15 micrometers, the fine metal wires can effectively prevent interference. Optical phenomena such as interference fringes, such as the so-called Moire effect. In the novel creation, the preferred embodiment of the metal wire of the first metal mesh 12A and the metal wire of the second metal mesh 12B is 1 μm to 10 μm.

Therefore, it should be particularly noted that the present invention mainly provides a touch function to the projection screen 11 by attaching a touch panel 12 to a projection screen 11; therefore, the substrate 121 of the touch panel 12 must be It is flexible, such as polyethylene (PE), polyethylene terephthalate (PET) or Tri-cellulose acetate (TAC).

7 clearly shows that the first metal mesh 12A is composed of the first dielectric layer 122, the first metal layer 123 and the first anti-reflective layer 124, and the second metal mesh 12B is composed of the second dielectric layer 122a, The second metal layer 123a and the second anti-reflection layer 124a are formed. The material of the first metal layer 123 and the second metal layer 123a is copper and has a thickness of about 0.2 μm to 3.0 μm. Since copper has a resistivity of about 1.678×10 ^-6 Ω•cm, it is much lower than other non-metallic transparent conductive materials (such as carbon nanotubes); therefore, it can make copper metal light transmittance of more than 85%. The thin conductive layer can be used as a transparent conductive structure. Based on the foregoing physical basis, the first metal layer 123 and the second metal layer 123a made of copper are respectively formed on the upper surface and the lower surface of the substrate 121, and the first metal layer 123 and the second metal layer are formed. The 123a forms a copper mesh structure with respect to the substrate 121; thus, the light can pass through the substrate 121 through the square holes of the copper mesh structure, so that the copper mesh structure and the substrate 121 have high light transmittance.

In the present invention, the material of the first dielectric layer 122 and the second dielectric layer 122a may be a metal, an oxygen-containing metal compound or a sulfur-containing metal compound, and has a thickness of about 1 nm to 200 nm. It is to be noted that the oxygen-containing or sulfur-containing metal compound refers to an oxygen molecule, an oxygen atom or a sulfur atom doped in the metal material. When a metal material is doped with an oxygen molecule, an oxygen atom or a sulfur atom, the metal compound loses the metallic luster, thereby obtaining a blue, dark blue, dark gray or black metal oxide or metal sulfide. Thus, a first dielectric layer 122 of blue, deep blue, dark gray or black is added between the substrate 121 and the first metal layer 123, and a blue color is added between the substrate 121 and the second metal layer 123a. A second dielectric layer 122a of dark blue, dark gray or black.

In addition, in the present invention, the material of the first anti-reflective layer 124 and the second anti-reflective layer 124a may be a metal, an oxygen-containing metal compound or a sulfur-containing metal compound, and has a thickness of about 5 nm to 1000 nm. As such, when the light is directed toward the first metal layer 123 and/or the second metal layer 123a, the first anti-reflective layer 124 and/or the second anti-reflective layer 124a absorbs light, thereby eliminating light reflection.

Please refer to FIG. 8 , which is a second implementation diagram of the touch panel 12 . Different from the first implementation structure of the touch panel 12 shown in FIG. 7 , the second implementation structure further includes: a first surface formed between the upper surface of the substrate 121 and the first dielectric layer 122 . The adhesion layer 126 is formed on the second adhesion layer 126a between the lower surface of the substrate 121 and the second dielectric layer 122a. Moreover, the second implementation architecture further includes a first protection layer 125 covering the first anti-reflection layer 124 and a second protection layer 125a covering the second anti-reflection layer 124a. The material of the first adhesion layer 126 and the second adhesion layer 126a may be a metal, a metal sulfide or a metal oxide, and the thickness thereof is 1 nm to 200 nm. In addition, the material of the first protective layer 125 and the second protective layer 125a is an optical clear adhesive (OCA) having a thickness of about 10 μm to 100 μm, such as a clear acrylic adhesive.

The surface resistivity of the touch panel 12 (transparent or opaque conductive structure) provided by the present invention is about 0.01 Ω/□~1 Ω/□, and the line resistance value is less than 250 Ω. Therefore, it can be determined that the surface resistance value and the line resistance value of the touch panel 12 are far smaller than the surface resistance value (about 100 Ω/□~400 Ω/□) and the line of the ITO substrate used in the prior art. Resistance value (about 10,000 Ω ~ 50,000 Ω). Therefore, since the touch panel 12 provided by the present invention has a low surface resistance value and a high conductivity, the touch panel 12 of the present invention can be used as a touch display device for a metal grid touch substrate. Good touch sensitivity.

Although the embodiment of the touch panel 12 is taught in FIG. 7 and FIG. 8 , the implementation of the possibility of the touch panel 12 should not be limited. Please refer to FIG. 9 , which is a cross-sectional view of a third implementation structure of the touch panel 12 . As shown in FIG. 9 , in actual production and application, the touch panel 12 is also composed of only a flexible substrate 121 b , a sensing circuit layer 123 b and a protective layer 124 b ; wherein the sensing circuit layer 123 b is configured On the flexible substrate 121b, the protective layer 124b covers the sensing circuit layer 123b. Here, the sensing circuit layer 123b is made of a conductive oxide, a nano silver, a carbon nanotube, or a graphene. A metal or non-metal conductive line is produced.

Thus, the above description has completely and clearly revealed the projection screen having the touch function of the novel creation, and through the above, we can know that the novel creation system has the following advantages:

(1) The present invention directly attaches a transparent or opaque conductive structure (ie, the touch panel 12) to a projection screen 11, thereby forming a projection screen 1 having a touch function. Obviously, compared with the conventional interactive whiteboard (infrared sensing, electromagnetic induction or pressure sensing), the projection screen 1 with touch function of the present invention has the advantages of simple structure and low manufacturing cost.

(2) In addition, since the projection screen having the touch function of the present invention is made of a flexible material, it can be retracted by a curtain housing 14; of course, it is taken up in the curtain housing. The projection screen in the 14 is easy to be carried and moved.

It must be additionally noted that although FIG. 5 shows that the projection screen 11 and the curtain housing 14 are connected to each other, a possible embodiment of the novel creation should not be limited thereby. Please refer to FIG. 10 , which is a schematic diagram of a third application example of a projection screen with a touch function. As shown in FIG. 10 , the projection screen 11 can be manufactured like a poster, and the curtain storage shell 14 is only used for accommodating the projection screen 11 . In addition, the back surface of the projection screen 11 is further provided with at least one adhesion layer 18 for assisting the projection screen 11 to adhere to a target projection area. As shown, the attachment layer 18 is disposed along the edge of the back side of the projection screen 11, wherein the attachment layer 18 is a magnet or a backing that is reusable.

It should be particularly noted that although FIG. 10 shows that the adhesion layer 18 is a frame-shaped adhesion layer, it is only an exemplary embodiment of the adhesion layer 18; in practical applications, the implementation aspect of the adhesion layer 18 It could also be a pair of magnet strips or a pair of strips. So designed, if the target projection area is a whiteboard or a wall, the projection screen 11 can be posted on the whiteboard or the wall by the adhesion layer 18. Therefore, in the third application example of the projection screen 1 having the touch function of the present invention, since the projection screen 11 and the screen housing 14 are separated, the touch is further enhanced. The function of the projection screen 1 is convenient to use.

It is to be understood that the foregoing detailed description of the present invention is intended to be illustrative of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, which is equivalent to the spirit of the novel. Implementation or change, so the relevant applications should be included in the patent scope of this case.

<This new creation>
1‧‧‧Projection screen with touch function
11‧‧‧Projection screen
12‧‧‧Touch panel
13‧‧‧Control processing circuit
14‧‧‧ cloth curtain housing
111‧‧‧Projection display area
2‧‧‧Electronic devices
3‧‧‧Projection device
131‧‧‧Detection unit
132‧‧‧Control Processing Unit
133‧‧‧Communication connection unit
16‧‧‧Bottom drawbar
112‧‧‧Border area
15‧‧‧Border bead
17‧‧‧Fixed bracket
121‧‧‧Substrate
122‧‧‧First dielectric layer
123‧‧‧First metal layer
124‧‧‧First anti-reflection layer
122a‧‧‧Second dielectric layer
123a‧‧‧Second metal layer
124a‧‧‧second anti-reflection layer
12A‧‧‧First Metal Grid
12B‧‧‧Second metal grid
126‧‧‧First adhesion layer
126a‧‧‧Second adhesion layer
125‧‧‧First protective layer
125a‧‧‧Second protective layer
121b‧‧‧Flexible substrate
123b‧‧‧Induction circuit layer
124b‧‧‧Protective layer
18‧‧‧Adhesive layer

<知知>
1'‧‧‧ interactive whiteboard system
11'‧‧‧Computer host
12'‧‧‧Projector
13'‧‧‧Interactive Whiteboard
14'‧‧‧ stylus

1 is an architectural diagram of an interactive electronic whiteboard system; FIG. 2 is a perspective view of a projection screen with a touch function; FIG. 3 is a screen storage housing, a projection screen, a touch panel, and a control processing circuit. 4 is a circuit block diagram of a control processing circuit; FIG. 5 is a schematic diagram of a second application example of a projection screen having a touch function; FIG. 6 is a schematic top view of the touch panel; FIG. 8 is a second embodiment of the touch panel; FIG. 9 is a third embodiment of the touch panel; FIG. 10 is a projection screen with a touch function. A schematic diagram of a third application example.

1‧‧‧Projection screen with touch function

11‧‧‧Projection screen

12‧‧‧Touch panel

13‧‧‧Control processing circuit

14‧‧‧ cloth curtain housing

2‧‧‧Electronic devices

3‧‧‧Projection device

16‧‧‧Bottom drawbar

15‧‧‧Border bead

17‧‧‧Fixed bracket

Claims (22)

A projection screen having a touch function includes: a projection screen; a touch panel attached to the projection screen and projecting a display area with respect to one of the projection screens; and a control processing circuit Connected to the touch panel and electrically connected to an external electronic device; wherein the electronic device projects a video image on the projection display area of the projection screen by using an external projection device; When a touch behavior is applied to the projection screen and the touch panel, the control processing circuit senses and recognizes the touch behavior, and notifies the electronic device to change or adjust the video image according to the touch behavior. The projection screen having the touch function as described in claim 1 further includes a curtain storage housing for retracting the projection screen; and the control processing circuit is disposed on the curtain housing Among them. The projection screen of the touch function of claim 1, wherein the back surface of the projection screen is further provided with at least one adhesion layer for assisting the projection screen to adhere to a target projection area. The method of claim 1, wherein the control processing circuit comprises: a detecting unit electrically connected to the touch panel for detecting the touch Whether the control panel is subjected to the touch behavior, and then outputs a touch behavior detection signal; a control processing unit is coupled to the detection unit to receive the touch behavior detection signal, and then analyze the touch behavior detection The touch signal is identified by the test signal; and a communication connection unit is coupled to the control processing unit and electrically connected to the electronic device. The projection screen with touch function as described in claim 1, wherein the electronic device can be any one of the following: a desktop computer, a notebook computer, a tablet computer, or a smart phone. The touch screen of the touch panel of claim 1, wherein the touch panel comprises: a flexible substrate; and an inductive circuit layer disposed on the flexible substrate; Wherein, the sensing circuit layer is a metal or non-metal conductive circuit; and a protective layer covering the sensing circuit layer; wherein the sensing circuit layer is composed of a conductive oxide, a nano silver, a carbon nanotube, Or made of graphene. The projection screen of the touch function of claim 1, wherein the touch panel comprises: a substrate having an upper surface and a lower surface; a first dielectric layer formed on the a first metal layer formed on the first dielectric layer; and a first anti-reflective layer formed on the first metal layer; wherein the first The dielectric layer, the first metal layer and the first anti-reflective layer form a first metal mesh over the upper surface. The projection screen with a touch function as described in claim 2, wherein the projection screen is further provided with a frame area surrounding the projection display area; and a frame bead is disposed in the frame area. Above, to prevent the projection screen from warping due to multiple winding and winding. The projection screen with a touch function as described in claim 2, wherein the projection screen is further connected with a bottom pull rod. The projection screen of the touch function of claim 3, wherein the adhesive layer is a magnet or a refillable adhesive, and the target projection area is a wall surface or a whiteboard. The projection screen of the touch function of claim 9, wherein the bottom pull rod can be connected to a fixing bracket for pulling and stabilizing the projection screen to prevent the projection screen from being touched. Swing back and forth. The projection screen with a touch function as described in claim 4, wherein the communication connection unit can be any one of the following: a wired communication connection unit or a wireless communication connection unit. The touch panel of the touch panel of claim 7, wherein the touch panel further comprises: a second dielectric layer formed on the lower surface of the substrate; a second metal layer formed on the second dielectric layer; and a second anti-reflective layer formed on the second metal layer; wherein the second dielectric layer and the second metal layer And the second anti-reflective layer is formed on the lower surface of the second metal mesh. The projection screen of the touch function of claim 13, wherein the line width of the first metal grid and the second metal grid is between 1 micrometer and 15 micrometers. The projection screen having a touch function according to claim 13 , wherein the substrate is a flexible substrate. The projection screen of the touch function of claim 13, wherein the material of the first dielectric layer and the second dielectric layer may be any of the following: metal, metal oxide or Metal sulfides. The projection screen having a touch function according to claim 13, wherein the material of the first anti-reflection layer and the second anti-reflection layer may be any of the following: metal, metal oxide or metal sulfide. Things. The projection screen of the touch function of claim 13, wherein the material of the first metal layer and the second metal layer is copper or silver. The touch screen panel further includes: a first protective layer covering the first anti-reflective layer; and a second protective layer, Covering the second anti-reflective layer; wherein the material of the first protective layer and the second protective layer is an Optical Clear Adhesive (OCA). The touch panel further includes: a first adhesion layer formed on the upper surface of the substrate and the first dielectric layer; And a second adhesion layer formed between the lower surface of the substrate and the second dielectric layer; wherein the material of the first adhesion layer and the second adhesion layer may be metal or metal sulfide Or metal oxides. The projection screen having a touch function as described in claim 15 may be made of polyethylene (PE) or polyethylene terephthalate. , PET) or Tri-cellulose acetate (TAC). The projection screen having a touch function according to claim 16 or 17, wherein the metal is selected from the group consisting of nickel (Ni), titanium (Ti), and molybdenum (Mo). ), chromium (Cr), copper (Cu), zinc (Zn), tin (Sn), cobalt (Co), vanadium (V), and an alloy of any two or more of the above.