WO2022141521A1

WO2022141521A1 - Touch frame assembly and intelligent interactive panel

Info

Publication number: WO2022141521A1
Application number: PCT/CN2020/142417
Authority: WO
Inventors: 袁嘉斌
Original assignee: 广州视源电子科技股份有限公司; 广州视睿电子科技有限公司
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-07-07
Also published as: CN115836275A

Abstract

A touch frame assembly and an intelligent interactive panel. The touch frame assembly comprises an infrared touch frame (10), a glass cover plate (20), and a connecting layer (30). The infrared touch frame (10) comprises a frame body (11) and a PCB assembly disposed on the frame body (11); the PCB assembly comprises a PCB (121) and a light-emitting member (122); the outer surface of the frame body (11) has a recessed surface (111), and the recessed surface (111) is recessed inwards; and the glass cover plate (20) is located on the inner side of the light-emitting member (122), and the inner surface of the glass cover plate (20) is attached to the recessed surface (111). The glass cover plate (20) is fixedly connected to the frame body (11) by means of the connecting layer (30), so as to control the glass cover plate (20) to be recessed inwards. By means of the technical solution, the problems in the prior art of large glass loss and high cost caused by selecting glass to control the glass cover plate (20) to be recessed inwards can be solved.

Description

Touch box components and smart interactive tablets

technical field

The present invention relates to the technical field of touch display devices, and in particular, to a touch frame assembly and an intelligent interactive tablet.

Background technique

At present, the infrared sensing height (writing height) of the touch frame components is generally greater than 3.5mm, and even some products have an infrared writing height greater than 4.5mm. When the user is writing, the feeling of suspension is serious, which leads to a poor writing experience. In order to continuously improve the user's writing experience, constantly Reducing the touch writing height is an inevitable development trend, and one of the major limitations of the infrared writing height is the control of the concave glass cover.

Especially for large-sized touch panels, the deformation of the glass cover is more difficult to control. The existing installation structure of the glass cover cannot effectively control the convexity of the glass cover. For display devices with low infrared writing heights, once the glass cover appears If the board is convex, the infrared signal will be blocked, resulting in the failure of touch recognition. In the prior art, in order to realize the concave glass cover plate, it can only be realized through the solution of selecting glass, which results in very high loss of glass, low production efficiency and high cost.

SUMMARY OF THE INVENTION

The present invention provides a touch frame assembly and an intelligent interactive tablet, so as to solve the problems of large loss and high cost of glass in the prior art by selecting glass for concave control of the glass cover.

According to one aspect of the present invention, a touch frame assembly is provided. The touch frame assembly includes: an infrared touch frame includes a frame body and a PCB assembly disposed on the frame body. The PCB assembly includes a PCB board and a light-emitting component. The surface has a concave surface, and the concave surface is concave inward; the glass cover plate is located on the inner side of the light-emitting element, and the inner surface of the glass cover plate is attached to the concave surface; the connecting layer, the glass cover plate and the frame are fixedly connected through the connecting layer to control the The glass cover plate is recessed inward.

According to another aspect of the present invention, an intelligent interactive tablet is provided, including a backlight module and the touch frame assembly provided above, wherein the backlight module is arranged inside the touch frame assembly.

By applying the technical solution of the present invention, the concave surface is arranged on the outer surface of the frame body, so that the concave surface is concave inward. When the glass cover plate is fixed on the frame body by the connecting layer, the inner surface of the glass cover plate will be attached to the concave surface. surface, so that the glass cover plate is deformed and dented inward by force. When the light-emitting element located outside the glass cover plate sends out an infrared signal, the concave glass cover plate will not block the transmission of the infrared signal, which can ensure the normal operation of the infrared touch control. In addition, the display device using the above structure only needs to process the concave surface on the outer surface of the frame body, and does not need to select the glass for concave control of the glass cover, which can reduce the loss of glass, improve production efficiency, and reduce production costs.

Description of drawings

The accompanying drawings forming a part of the present application are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

FIG. 1 shows a cross-sectional view of a touch frame assembly provided according to Embodiment 1 of the present invention;

FIG. 2 shows another cross-sectional view of the touch frame assembly provided according to Embodiment 1 of the present invention;

FIG. 3 shows an exploded view of a touch frame assembly provided according to Embodiment 1 of the present invention;

FIG. 4 shows a partial enlarged view at A in FIG. 3 .

Wherein, the above-mentioned drawings include the following reference signs:

10, infrared touch frame; 11, frame body; 111, recessed surface; 112, step; 1121, step surface; 113, the first installation slot; 114, the second installation slot; 121, PCB board; , infrared emission tube; 1222, infrared receiving tube; 13, first frame body; 131, long side; 132, short side; 14, second frame body; 15, third frame body; 20, glass cover; 30, connecting layer; 40, filter strip.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 and FIG. 2 , Embodiment 1 of the present invention provides a touch frame assembly. The touch frame assembly includes an infrared touch frame 10 , a glass cover plate 20 and a connection layer 30 . The infrared touch frame 10 includes a frame body 11 and a PCB assembly disposed on the frame body 11. The PCB assembly includes a PCB board 121 and a light-emitting element 122. The glass cover 20 is located inside the light-emitting element 122, and the light-emitting element 122 can emit infrared signals. . The glass cover 20 includes a touch surface through which a user can perform touch operations. In this embodiment, the outer surface of the frame body 11 refers to the surface of the frame body 11 on the side facing the glass cover plate 20 . The outer surface of the frame body 11 has a recessed surface 111 , and the recessed surface 111 is recessed inward. 30 When the glass cover plate 20 is fixed on the frame body 11, the inner surface of the glass cover plate 20 is attached to the recessed surface 111, so that the glass cover plate 20 is deformed and dented inward by force.

Using the touch frame assembly provided in this embodiment, when the light-emitting element 122 located on the outer side of the glass cover plate 20 sends out an infrared signal, since the glass cover plate 20 is recessed inward, the recessed glass cover plate 20 will not block the transmission of the infrared signal, and can Ensure that the infrared touch operation is performed normally. In addition, the display device using the above structure only needs to process the concave surface 111 on the outer surface of the frame body 11, and does not need to select the glass for concave control of the glass cover plate 20, which can reduce the loss of glass, improve production efficiency, and reduce production costs. .

Wherein, when the light-emitting element 122 emits an infrared signal, a horizontal and vertical cross-infrared matrix can be formed on the upper surface of the glass cover 20. When the user touches the glass cover 20, the controller determines the specific position of the contact on the glass cover 20. to complete the infrared touch operation. It can be understood that, the touch surface may be an infrared matrix formed by intersecting infrared rays, or may be the surface of the glass cover corresponding to the infrared matrix, which is not limited herein.

It should be noted that, in this embodiment, the glass cover plate 20 is arranged outside the recessed surface 111 , and the glass cover plate 20 is closer to the user, which can effectively reduce the writing height and improve the writing experience.

As shown in FIG. 2 , in this embodiment, the thickness of the frame body 11 changes uniformly, and the thickness of the middle of the frame body 11 is smaller than the thickness of both ends of the frame body 11 to form the concave surface 111 .

In this embodiment, the frame body 11 is provided with a processing surface for matching with the glass cover plate 20 . The processing surface is a recessed surface 111 , which can be obtained by machining. The recessed surface 111 can be an arc-shaped concave surface, or can be It is a fracture surface, which can make the processing surface gradually concave to the middle along its two ends. The inner surface of the glass cover plate 20 is attached to the concave surface 111. At this time, the glass cover plate 20 matches or fits with the concave surface 111. , so that the glass cover plate 20 is recessed inward, thereby preventing the glass cover plate 20 from blocking the infrared signal emitted by the PCB assembly due to the outward protrusion during use. As shown in FIG. 1 , the arrow points in the figure represent infrared signal transmission. At this time, the glass cover plate 20 is concave, and the signal is transmitted normally, thereby ensuring the normal operation of the infrared touch operation.

In this embodiment, the recessed surface 111 is formed by cutting the middle of the frame body 11 , so that the processing of the recessed surface 111 of the frame body 11 is more convenient.

Specifically, the concave surface 111 is an arc-shaped concave surface. The arc-shaped concave structure is adopted, which facilitates the use of the arc-shaped concave surface to deform the glass cover plate 20 .

In this embodiment, the arc-shaped concave surface has a symmetrical structure, so that the glass cover plate 20 can be symmetrically recessed, thereby ensuring that the inner concave of the glass cover plate 20 is more stable.

Preferably, the highest point of the arc-shaped concave surface is set corresponding to both ends of the glass cover plate 20, and the lowest point of the arc-shaped concave surface is set corresponding to the midpoint of the long side of the glass cover plate 20. The highest point of the concave surface may also be set corresponding to both ends of the frame body 11 , and the lowest point of the arc-shaped concave surface may be set corresponding to the midpoint of the long side of the frame body 11 .

That is, the highest point of the arc-shaped concave surface is the two ends of the frame body 11 or near the two end points of the glass cover plate 20, and the lowest point of the arc-shaped concave surface is the midpoint of the frame body 11 or near the middle point of the glass cover plate 20, so that The glass cover plate 20 can be evenly dented, so as to avoid the glass cover plate 20 from being broken due to the excessive deformation of the partial depression. In addition, the length of the long side of the glass cover plate 20 is longer than the length of the short side, which is easy to make the glass cover plate 20 from the middle Bending inwards, so that the glass cover plate 20 is concave, which is an optional solution.

The height difference between the highest point of the arc-shaped concave surface and the lowest point of the arc-shaped concave surface is H, and the value range of H is 0.5mm-5mm. Specifically, H can be 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm and any other value between 0.5mm and 5mm. It should be pointed out that when the H value is too small, the bending of the glass cover plate 20 is not obvious enough. At this time, due to the process reasons, the glass cover plate 20 itself is convex, which is easy to block the transmission of infrared light, and When the H value is too large, the glass cover plate 20 is likely to be broken, so the above-mentioned value range H is an optional solution.

In this embodiment, the outer contour of the glass cover plate 20 is a rectangle, and the long side of the glass cover plate 20 is matched with the concave surface 111 , which facilitates the deformation of the glass cover plate 20 .

As shown in FIG. 1 and FIG. 2 , the cover glass 20 is connected to the recessed surface 111 through the connecting layer 30 , so that the cover glass 20 is bonded to the recessed surface 111 , and the cover glass 20 is fixed on the frame body 11 . , thereby ensuring that the glass cover plate 20 is bent inward, and at the same time making the connection structure between the two more compact, which is convenient for reducing the thickness and size of the device and improving the use experience.

Specifically, the connection layer 30 includes a double-sided adhesive layer or a liquid adhesive layer, thereby making the connection structure between the glass cover plate 20 and the recessed surface 111 simpler and ensuring firm connection between the two.

As shown in FIG. 1 and FIG. 4 , the frame body 11 is provided with a step 112 for positioning the glass cover plate 20 , the inner surface of the glass cover plate 20 is in contact with the step surface 1121 of the step 112 , and the side wall of the glass cover plate 20 is Corresponding to the steps 112 provided, the recessed surfaces 111 are provided on the stepped surfaces 1121 of the steps 112 . It should be noted that, in this embodiment, the plane of the frame body 11 that is in contact with the inner surface of the glass cover plate 20 forms the step surface 1121 of the step 112 . The steps 112 on the frame body 11 form a sunken table structure, at least part of the glass cover plate 20 is sunk into the table surrounded by the steps 112 , and the inner surface of the glass cover plate 20 is in contact with the step surface 1121 of the step 112 In combination, the glass cover plate 20 is supported by the step surface 1121 , the side wall of the glass cover plate 20 is arranged corresponding to the step 112 , and the step 112 is used to support and limit the glass cover plate.

The above structure makes the installation of the glass cover plate 20 more convenient and the abutting more stable. After the glass cover plate 20 is put into the step 112 , the glass cover plate 20 is fixed by the connecting layer to avoid slippage of the glass cover plate 20 , and the step 112 has a positioning function to facilitate the installation of the glass cover plate 20 . There is a gap between the end of the glass cover 20 and the step 112 in FIG. 1 . Due to the processing error of each component during the processing, by setting the gap, the glass cover 20 can be smoothly installed into the frame 11 .

As shown in FIGS. 1 , 3 and 4 , in this embodiment, the frame body 11 includes a first frame body 13 , a second frame body 14 and a third frame body 15 , and the steps 112 are arranged on the first frame body 13 . , the second frame body 14 is covered on the outside of the first frame body 13 , the third frame body 15 is located between the first frame body 13 and the second frame body 14 , and the second frame body 14 can be used for the first frame body 13 and the third frame body 15 for shielding. The PCB assembly is arranged on the third frame body 15 , and the filter strip 40 is arranged on the second frame body 14 . Disposing the frame body 11 as a separate body facilitates the processing of the concave surface 111 on the first frame body 13 , which has the advantage of being convenient for processing.

As shown in FIG. 3 , the first frame body 13 includes two upper and lower long sides 131 and two left and right short sides 132 , wherein the long sides 131 and the short sides 132 both include steps 112 for supporting the glass cover plate 20 . In this embodiment, the recessed surfaces 111 are disposed on the stepped surfaces 1121 of the two long sides 131 . In another embodiment, the concave surfaces 111 are disposed on the stepped surfaces 1121 of the two short sides 132 . It can be understood that the concave surface 111 may also be provided on the long side 131 and the short side 132 at the same time.

As shown in FIG. 4 , the frame body 11 is provided with a step 112 . The step 112 is disposed corresponding to the side wall of the glass cover plate 20 . Disposing the frame body 11 in a separate body facilitates the processing of the steps 112 on the first frame body 13 and can reduce the difficulty of processing.

As shown in FIG. 1 , in this embodiment, the light-emitting element 122 includes an infrared emitting tube 1221 and an infrared receiving tube 1222 , and the infrared emitting tube 1221 and the infrared receiving tube 1222 are respectively arranged on both sides of the frame body 11 . The sides are provided with a first installation slot 113 and a second installation slot 114 which are mutually penetrating and vertically arranged. The second installation slot 114 is located on the outer side of the glass cover plate 20, the PCB board 121 is installed in the first installation slot 113, and the infrared emission tube 1221 and the infrared receiving tube 1222 are respectively installed in the second installation grooves 114 on both sides of the frame body 11 .

Specifically, the first end of the PCB assembly is adhered to the groove wall of the first installation groove 113, so as to facilitate the connection of the PCB assembly and ensure its stable fixation, and the second end of the PCB assembly extends into the second installation groove 114, and The infrared transmitting tube 1221 and the infrared receiving tube 1222 are located at the second end of the PCB assembly, so that the infrared transmitting tube 1221 and the infrared receiving tube 1222 can successfully complete the transmission of infrared signals.

Based on the above structure, the PCB board 121 is located in the first installation slot 113, and the infrared emitting tube 1221 and the infrared receiving tube 1222 are both installed in the second installation slot 114. The installation structure is reasonable, which is convenient for installation and protects the PCB components. Among them, the infrared emitting tube 1221 and the infrared receiving tube 1222 form a corresponding horizontal and vertical infrared matrix on the screen. When the user touches the screen, the controller determines the specific position of the touch point on the screen, thereby completing the infrared touch operation.

As shown in FIG. 1 , the touch frame assembly further includes a filter strip 40 , the filter strip 40 is installed in the notch of the second installation groove 114 , and the two ends of the filter strip 40 are respectively connected with the groove wall and the groove wall of the second installation groove 114 . The glass cover plates 20 are connected, thereby reducing the writing height and improving the user experience.

Specifically, since the filter strip 40 can be directly connected with the glass cover plate 20, there is no need to arrange other structures on the frame body 11 to fix the filter strip 40, so that the glass cover plate 20 can be brought closer to the user, thereby reducing the writing height. Improve user experience. On the other hand, since there is no need to provide other structures on the frame body 11 to fix the filter strips 40 , the thickness of the frame body 11 can be reduced, thereby reducing the thickness of the display device, which is convenient to realize the lightness and thinness of the display device.

The second embodiment of the present invention provides an intelligent interactive tablet, including a backlight module and the touch frame assembly provided above, and the backlight module is arranged inside the touch frame assembly. Therefore, the intelligent interactive tablet also only needs to process the concave surface 111 on the outer surface of the frame body 11 , and does not need to select glass for concave control of the glass cover plate 20 , which can reduce glass loss, improve production efficiency, and reduce production costs.

In this embodiment, the backlight module is fixed on the frame body 11 by screws, and the frame body 11 serves as the frame of the display device.

It should be noted that the terminology used herein is for the purpose of describing specific embodiments only, and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural as well, furthermore, it is to be understood that when the terms "comprising" and/or "including" are used in this specification, it indicates that There are features, steps, operations, devices, components and/or combinations thereof.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise. Meanwhile, it should be understood that, for the convenience of description, the dimensions of various parts shown in the accompanying drawings are not drawn in an actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the authorized description. In all examples shown and discussed herein, any specific value should be construed as illustrative only and not as limiting. Accordingly, other examples of exemplary embodiments may have different values. It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present invention, it should be understood that the orientations indicated by orientation words such as "front, rear, top, bottom, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. Or the positional relationship is usually based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and these orientation words do not indicate or imply the indicated device or element unless otherwise stated. It must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be construed as a limitation on the protection scope of the present invention; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

For ease of description, spatially relative terms such as "on", "over", "on the surface", "above", etc., may be used herein to describe what is shown in the figures. The spatial positional relationship of one device or feature shown to other devices or features. It should be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or features would then be oriented "below" or "over" the other devices or features under other devices or constructions". Thus, the exemplary term "above" can encompass both an orientation of "above" and "below." The device may also be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood to limit the scope of protection of the present invention.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

A touch frame assembly, characterized in that the touch frame assembly includes:

The infrared touch frame (10) includes: a frame body (11) and a PCB assembly arranged on the frame body (11), the PCB assembly including a PCB board (121) and a light-emitting element (122), the frame body (121) 11) the outer surface has a concave surface (111), and the concave surface (111) is concave inward;

a glass cover plate (20), located on the inner side of the light-emitting element (122), and the inner surface of the glass cover plate (20) is attached to the concave surface (111);

A connection layer (30), through which the glass cover plate (20) is fixedly connected with the frame body (11), so as to control the inward depression of the glass cover plate (20).
The touch frame assembly according to claim 1, wherein the thickness of the middle part of the frame body (11) is smaller than the thickness of both ends of the frame body (11) to form the concave surface (111).
The touch frame assembly according to claim 1, wherein the concave surface (111) is an arc-shaped concave surface.
The touch frame assembly according to claim 3, wherein the arc-shaped concave surface is a symmetrical structure,

The highest point of the arc-shaped concave surface is set corresponding to both ends of the glass cover plate (20), and the lowest point of the arc-shaped concave surface is set corresponding to the midpoint of the long side of the glass cover plate (20). ;and / or,

The highest point of the arc-shaped concave surface is set corresponding to both ends of the frame body (11), and the lowest point of the arc-shaped concave surface is set corresponding to the midpoint of the long side of the frame body (11).
The touch frame assembly according to claim 3, wherein the height difference between the highest point of the arc-shaped concave surface and the lowest point of the arc-shaped concave surface is H, and the value range of H is 0.5mm-5mm.
The touch frame assembly according to any one of claims 1 to 5, wherein the outer contour of the glass cover plate (20) is a rectangle, and the long side of the glass cover plate (20) is in contact with the recess. face (111) is connected.
The touch frame assembly according to any one of claims 1 to 5, wherein the glass cover plate (20) is connected to the concave surface (111) through the connection layer (30).
The touch frame assembly according to claim 7, wherein the connection layer (30) comprises a double-sided adhesive layer or a liquid adhesive layer.
The touch frame assembly according to any one of claims 1 to 5, wherein the frame body (11) is provided with a step (112) for positioning the glass cover plate (20), the glass cover The inner surface of the plate (20) is in contact with the step surface (1121) of the step (112), and the side wall of the glass cover plate (20) is arranged corresponding to the step (112), and the recessed surface ( 111) is arranged on the step surface (1121) of the step (112).
The touch frame assembly according to claim 9, wherein the frame body (11) comprises two long sides (131) and two short sides (132), and the concave surface (111) is disposed on the on the two long sides (131) of the frame body (11); or the recessed surface (111) is arranged on the two short sides (132) of the frame body (11); or the recessed surface (111) It is simultaneously arranged on the two long sides (131) of the frame body (11) and the two short sides (132) of the frame body (11).
The touch frame assembly according to any one of claims 1 to 5, wherein the light-emitting element (122) comprises an infrared emitting tube (1221) and an infrared receiving tube (1222), and the infrared emitting tube (1221) ) and the infrared receiving tube (1222) are respectively arranged on both sides of the frame body (11), and both sides of the frame body (11) are provided with first installation grooves (113) that penetrate each other and are vertically arranged and a second installation groove (114), the second installation groove (114) is located outside the glass cover plate (20), and the PCB board (121) is installed in the first installation groove (113), The infrared emitting tube (1221) and the infrared receiving tube (1222) are respectively installed in the second installation grooves (114) on both sides of the frame body (11).
The touch frame assembly according to claim 11, wherein the first end of the PCB assembly is adhered to the groove wall of the first installation groove (113), and the second end of the PCB assembly extends into the The second mounting groove (114) is installed, and the infrared emitting tube (1221) and the infrared receiving tube (1222) are located at the second end of the PCB assembly.
The touch frame assembly according to claim 11, wherein the touch frame assembly further comprises a filter strip (40), and the filter strip (40) is installed in the groove of the second installation groove (114). and the two ends of the filter strip (40) are respectively connected with the groove wall of the second installation groove (114) and the glass cover plate (20).
An intelligent interactive tablet, comprising a backlight module and the touch frame assembly according to any one of claims 1-13, wherein the backlight module is arranged inside the touch frame assembly.