TWM444559U - Optical sensing device - Google Patents

Description

Optical sensing device

The present invention relates to an optical sensing device, and more particularly to a device for utilizing different materials to respectively have high reflection and low reflection or non-reflection characteristics for invisible light, and position sensing by invisible reflection contrast image.

The contact sensing technology currently available on the market is the most common application of touch sensing panels, and the application field is also the most extensive. The types of touch sensing panels can be roughly classified into resistive, capacitive, inductive, and infrared. The principle is that the touch sensing panel is provided with a plurality of sensing units for sensing the user's clicking operation. Knowing the location selected by the user, and then transmitting the operation command to the control unit of the display device, and the control unit correspondingly outputs a preset function according to the button corresponding to the position pressed by the user, for example, opening the window, closing the window, Move to the previous page or move to the next page.

Although the touch sensing panel can sense and perform the operation of the user, it must be combined with the display device during the manufacturing process, so that the manufacturing cost of the touch display device is higher than that of the general display device. Moreover, as long as the sensing unit of the touch sensing panel fails, the entire display device must be sent to the factory for maintenance, and the touch sensing panel cannot be separately taken out for maintenance work. On the other hand, if the user is required to have a touch sensing function, the user must replace the existing non-touch display device, which obviously causes waste of resources.

Therefore, how to overcome the problems of high manufacturing cost, inconvenient maintenance, and waste of resources of the touch display device described above has become a problem that is currently being solved.

In view of the above-mentioned shortcomings of the prior art, the present invention discloses an optical sensing device that can be combined with a general display device to form a touch display device to reduce the manufacturing cost of the touch display device.

The optical sensing device provided by the present invention is for reflecting invisible light to form a contrast image, and the optical sensing device comprises a transparent substrate and a plurality of low reflection or non-reflective substances formed on the transparent substrate, wherein the transparent substrate is For reflecting the invisible light, the plurality of low-reflecting or non-reflecting materials are used to reduce the reflection of the invisible light, so that the invisible light projected to the optical sensing device can be reflected by the transparent substrate and The low reflection or non-reflective properties of low or non-reflective materials produce a contrasting image contrast effect.

The present invention provides an optical sensing device for forming a plurality of penetrating holes on a transparent substrate for reflecting the invisible light, and the plurality of penetrating holes allow the invisible light to pass through The invisible light reflection is avoided, so that the invisible light projected to the optical sensing device can produce a reflection image contrast effect by the high reflection of the transparent substrate and the non-reflective property of the through holes.

When the optical sensing device of the present invention is mounted on a general display device or a fixed image or text, the touch sensing device is formed to accept the touch operation of the user and perform corresponding functions according to the operation of the user. Therefore, the manufacturing cost of the touch display device can be reduced. Since the creation can be directly combined with a general display device to form a touch display device, the creation can be directly removed from the display device for replacement during maintenance. In addition, the present invention can be applied to electronic whiteboards, tracing, and teaching applications in addition to the field of touch sensing panels, and is not limited to optical display devices, and has a wide range of applications.

The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily appreciate other advantages and functions of the present invention from the disclosure of the present disclosure.

Please refer to FIG. 1A and FIG. 1B at the same time. FIG. 1A is a schematic diagram of the creation, and FIG. 1B is a partial enlarged view of FIG. 1A. The structure of the inventive optical sensing device 1 is shown in Fig. 1A. The inventive optical sensing device 1 comprises a transparent substrate 10 and a plurality of low reflection or non-reflective substances 11.

The transparent substrate 10 is a substrate formed of a single layer or a multilayer optical film or a transparent material having invisible light reflection characteristics for reflecting invisible light when invisible light such as infrared rays is projected on the transparent substrate 10 ( Having invisible light and high reflectivity), and the low-reflecting or non-reflecting substance 11 is used to reduce or avoid reflection of invisible light (that is, having full absorption or partial absorption of invisible light), and as shown in FIG. 1B It can be seen that each of the low-reflecting or non-reflecting substances 11 is patterned and maintains a specific distance from each other. By using the transparent substrate 10 to have invisible light and high reflectivity to reflect invisible light and the characteristic of complete absorption or partial absorption of the low-reflection or non-reflective substance 11, the optical sensing device of the present invention can produce invisible light reflection contrast. Image, then detected and analyzed by reflected image The position of the invisible light is projected to achieve the touch effect. In practice, the low-reflection or non-reflective substance 11 can be an invisible ink (transparent) having invisible light absorbing characteristics, and the invisible ink is formed on the transparent substrate 10 by coating or printing, and the invisible ink is used. Low reflection characteristics to reduce the reflection of invisible light. The low-reflection or non-reflective substance 11 can also use a dark substance (non-transparent), which is formed by coating or printing a dark substance on the transparent substrate 10, and the dark substance absorbs the invisible light characteristic to reduce The reflection of invisible light causes the invisible light projected on the creation to form a reflection contrast image. Therefore, the low-reflection or non-reflective substance 11 is not limited to being transparent or non-transparent.

In one embodiment, the low-reflection or non-reflective substance 11 may be a film formed of a transparent or opaque substance, and the film is formed on the transparent substrate.

Referring to Figure 2, a schematic representation of a low reflective or non-reflective material formed on a transparent substrate. In Fig. 2, a transparent film 12 having a plurality of low-reflecting or non-reflecting substances 11 is first provided, and the transparent film 12 is attached to the transparent substrate 10, so that the low-reflecting or non-reflecting substance 11 is transparent. The film 12 is bonded to the transparent substrate 10 to form a surface of the transparent substrate 10.

It should be noted that although in the present embodiment, the bonding cooperation is the description of the embodiment, but it is not limited thereto, and the low reflection or non-reflecting substance 11 may be formed on the transparent substrate by other means such as printing. 10 surface.

Please refer to FIG. 3, which is a schematic diagram of the first embodiment of the present creation. The present invention is written or drawn on the surface of the optical sensing device 1 by using a writing instrument 13 capable of emitting invisible light. The writing instrument 13 has an invisible light emitter, an image processor, a memory and a transmission device, since the writing instrument has The structure of 13 is not the focus of this creation, so I will not repeat it here.

The optical sensing device 1 of the present embodiment is applied to the drawing. Since the optical sensing device 1 of the present invention has a transparent structure, the optical sensing device 1 can be placed on the picture 14, and then the optical device 13 can be used for the optical sensing. The device 1 is patterned according to the outer shape of the picture 14. At this time, the invisible light emitter of the writing instrument 13 projects invisible light to the optical sensing device 1 while drawing, and the invisible light is reflected by the optical sensing device 1. The image reflected by the optical sensing device 1 is received by the image processor of the writing instrument 13. The user can set the pen 13 to store the received image in the memory of the pen 13 or transfer the image to an external device such as a computer by using the device of the pen 13 to make the external device The pattern drawn by the writing instrument 13 in the optical sensing device 1 can be displayed synchronously. The transmission device described in this embodiment is used for transmitting image data to an external device such as a computer. Therefore, the technology used in the transmission device may be wired transmission or wireless transmission, and the wireless transmission technology may include, but is not limited to, Bluetooth. , infrared and other transmission methods.

Please refer to FIG. 4, which is a second embodiment of the present invention. In addition to the implementation applications that can be used for patterning, this creation can also be used in the implementation of touch displays. A display 15 is shown in FIG. 4 to mount the optical sensing device 1 of the present invention on the display 15, and the user can write or draw on the display 15 using the writing instrument 13 due to the structure and image of the writing instrument 13. The processing manner has been described in the first embodiment, and therefore will not be described again.

In use, the user writes on the optical sensing device 1 with the writing instrument 13, and the written content can be processed by the writing instrument 13 and stored in the memory of the writing instrument 13 or by the writing instrument 13 When the transmission device is transmitted to an external device such as another computer, the user can immediately know the situation written by the user. In addition, this embodiment can also be applied to the teaching field, where the learner writes on the display 15, and the content written by the learner can be simultaneously displayed on an external device such as a teacher's computer, or applied to a learning test. For example, the content written by the learner using the writing instrument 13 is stored in the memory of the writing instrument 13, and the teacher can read the written content of the learner from the memory after the test is finished, and then perform the scoring.

Please refer to FIG. 5, which is a schematic diagram of a third embodiment of the present invention. In this embodiment, the optical sensing device 1 is fixed on a wall surface, a blackboard or a whiteboard to form the electronic whiteboard. In the case of a briefing or a meeting, the user can use the writing instrument 13 to write or draw a chart on the optical sensing device 1, and transmit the content written or drawn by the user to each participant using the blue device of the writing device. The computer is displayed or stored in the memory of the writing instrument 13. After the meeting ends, the content stored in the memory is transferred to the computer device as a meeting record. Since the structure and image processing mode of the writing instrument 13 have been described in the first embodiment, it will not be described again.

Moreover, the invisible light mentioned in this creation may be infrared, but is not limited thereto.

Please refer to FIG. 6 , which is a schematic structural view of another embodiment of the optical sensing device. Another form of optical sensing device 2 of the present invention includes a transparent substrate 20 and a plurality of penetration holes 21 formed in the transparent substrate 20. The transparent substrate 20 is a single layer or a plurality of optical films for reflecting invisible light, and the plurality of penetrating holes 21 allow invisible light to penetrate the transparent substrate 20 to reflect the invisible light projected on the present invention. Compare images.

By reflecting the difference in the degree of invisible light reflection between the transparent substrate 10, 20 and the plurality of low-reflecting or non-reflecting substances 11 or the penetration holes 21, the contrast contrast image can be formed, so that the present invention can be combined with a general display device. To form a touch display device, or to apply the creation to other purposes such as electronic whiteboard, tracing or teaching.

The above embodiments are intended to illustrate the principles of the present invention and its effects, and are not intended to limit the present invention. Anyone who is familiar with the art may modify the above embodiments without departing from the spirit and scope of the creation. Therefore, the scope of protection of this creation should be as listed in the scope of patent application described later.

1, 2‧‧‧ optical sensing device

10, 20‧‧‧ Transparent substrate

11‧‧‧Low-reflective or non-reflective substances

12‧‧‧Transparent film

13‧‧‧ pens

14‧‧‧ Drawing

15‧‧‧ display

21‧‧‧through hole

1A is a schematic view of the creation; FIG. 1B is a partial enlarged view of FIG. 1A; FIG. 2 is a schematic view showing a low-reflection or non-reflective substance formed on a transparent substrate; FIG. 3 is a schematic view of the first embodiment of the creation; 4 is a second embodiment of the present invention; FIG. 5 is a third embodiment of the present invention; and FIG. 6 is a schematic structural view of another embodiment of the optical sensing device.

1‧‧‧Optical sensing device

10‧‧‧Transparent substrate

Claims (5)

An optical sensing device for generating a reflective contrast image for invisible light for performing a touch operation, comprising: a transparent substrate for reflecting the invisible light; and a plurality of low-reflecting or non-reflecting substances formed on the transparent substrate Wherein the plurality of low-reflecting or non-reflecting materials are transparent or non-transparent to reduce or avoid the reflection of the invisible light, so that the invisible light projected onto the optical sensing device is low by the transparent substrate The difference in the degree of reflection of the reflected or non-reflective material produces a reflected contrast image. The optical sensing device of claim 1, wherein the plurality of low reflection or non-reflective materials are printed on the surface of the transparent substrate. The optical sensing device of claim 1, wherein the plurality of low reflection or non-reflective materials are formed on the transparent film, and the transparent film is attached to the transparent substrate. The optical sensing device according to claim 1, wherein the transparent substrate is formed with a single layer or a multilayer optical film having invisible light and high reflection characteristics. The optical sensing device of claim 1, wherein the low-reflection or non-reflective material is a film formed of a transparent or opaque substance, and the film is attached to the transparent substrate.