Infrared splicing touch screen and interactive panel

Abstract

The embodiment of the utility model provides an infrared spliced touch screen and an interactive tablet personal computer. The infrared spliced touch screen comprises at least two spliced screens, and the two spliced screens are arranged in a spliced mode; the splicing screen comprises a display screen, a transmitting lamp board card and a receiving lamp board card; the transmitting lamp board card and the receiving lamp board card are oppositely arranged on the two sides of the display screen; by increasing the density of the infrared lamp tubes close to the splicing position, the number of the light rays is increased, so that even if the cross-screen light rays emitted by the infrared emitting tubes of the other splicing screen and received by the infrared receiving tubes close to the splicing position are shielded due to uneven splicing, the light rays are not shielded; the infrared receiving tubes close to the splicing position can still receive enough light rays from the infrared transmitting tubes of the splicing screen where the infrared receiving tubes are located, so that the influence of the splicing flatness of the splicing screen on the number of the light rays received by the infrared receiving tubes close to the splicing position is small, and the requirement for the splicing flatness of the splicing screen in the infrared splicing touch screen is low; the infrared splicing touch screen is convenient to install and use, and the touch precision is improved.

Description

Technical Field

[0001] This application relates to the field of infrared touch technology, and in particular to an infrared splicing touch screen and an interactive flat panel. Background Technology

[0002] An infrared splicing touch screen is a touch device composed of two or more splicing screens. Each splicing screen has infrared emitting tubes and infrared receiving tubes arranged around its perimeter. By controlling the infrared emitting tubes to emit infrared light and controlling the infrared receiving tubes to receive infrared light, the device collects the electrical signals output by the infrared receiving tubes, judges the changes in the magnitude of the electrical signals, and thus detects the touch object, thereby realizing the touch function.

[0003] The infrared lamp arrangement in related technologies requires a high degree of flatness in the splicing of the video wall. When the splicing is uneven, the infrared light will be blocked, reducing touch accuracy. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this application provides an infrared splicing touch screen and an interactive flat panel, which can reduce the flatness requirements of splicing screens in infrared splicing touch screens, facilitate the rapid installation of infrared splicing touch screens, and improve touch accuracy.

[0005] According to a first aspect of the embodiments of this application, an infrared splicing touch screen is provided, including at least two splicing screens, which are spliced ​​together; each splicing screen includes a display screen, a transmitting light board, and a receiving light board; the transmitting light board and the receiving light board are disposed opposite to each other on both sides of the display screen;

[0006] The first area near the splicing position on the emitting light board is provided with several first infrared emitting tubes; the second area on the emitting light board other than the first area is provided with several second infrared emitting tubes; the arrangement density of the several first infrared emitting tubes is greater than the arrangement density of the several second infrared emitting tubes.

[0007] The receiving light board has several first infrared receivers in the third area near the splicing position; the receiving light board has several second infrared receivers in the fourth area other than the third area; the arrangement density of the first infrared receivers is greater than the arrangement density of the second infrared receivers.

[0008] According to a second aspect of the embodiments of this application, an interactive flat panel is provided, including the infrared splicing touch screen as described above.

[0009] The spliced screen of the embodiment of the present application arranges infrared lamp tubes only on two sides of the display screen, compared with the traditional method of arranging infrared lamp tubes on four sides of the display screen, which avoids the problem that light is covered due to uneven splicing when the light crosses from one side of one spliced screen to the other side of another spliced screen, resulting in a decrease in touch accuracy. Further, the embodiment of the present application increases the number of light by encrypting the density of infrared lamp tubes close to the splicing position, so that even if the infrared receiving tube close to the splicing position is covered by the cross-screen light emitted by the infrared emitting tube of another spliced screen due to uneven splicing, the infrared receiving tube close to the splicing position can still receive a sufficient number of light from the infrared emitting tube of the spliced screen where the infrared receiving tube is located, so that the number of light received by the infrared receiving tube close to the splicing position is less affected by the flatness of the spliced screen, thereby reducing the requirement for the flatness of the spliced screen in the infrared spliced touch screen, facilitating the installation and use of the infrared spliced touch screen, and improving the touch accuracy.

[0010] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application.

[0011] In order to better understand and implement, the present application will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Structure schematic diagram of an infrared spliced touch screen shown in an embodiment of the present application;

[0013] Figure 2 Structure schematic diagram of an interactive tablet shown in an embodiment of the present application. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiment of the present application will be described in further detail below with reference to the accompanying drawings.

[0015] It should be clear that the described embodiments are only the first part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present application.

[0016] When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated.

[0017] In the description of the present application, it should be understood that the terms "first", "second", "third" and the like are used only to distinguish similar objects, and do not necessarily indicate a specific order or sequence, nor can they be understood as indicating or implying relative importance. The above-mentioned terms can be understood according to the specific meaning in the present application by those skilled in the art. The singular forms "a", "said" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. The word "if" used herein can be interpreted as "when" or "when" or "in response to determining". In addition, in the description of the present application, "multiple" means two or more, unless otherwise specified. The association relationship of the associated objects described by "and / or" indicates that there can be three relationships, for example, A and / or B can represent the existence of A alone, the existence of A and B together, and the existence of B alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0018] The inventor found in the process of implementing the present application that the existing infrared splicing touch screen includes at least two splicing screens, the lamp tubes are arranged on the four sides of the splicing screen, the lamp tubes are arranged on the left and right sides, the light is emitted from the left side to the right side, and the light needs to pass through two splicing screens. The lamp tubes arranged on the upper and lower sides are sparse, in order to increase the light density, the emission angle of the lamp tubes is relatively large, so that the distance from the emission lamp tube on the upper side to the receiving lamp tube on the lower side is far. When the two splicing screens are not flat, the cross-screen light on the left and right sides will be blocked, and the cross-screen light on the upper and lower sides will also be blocked due to the long transmission distance, resulting in a decrease in touch accuracy. Therefore, this infrared lamp tube arrangement mode has high requirements for the assembly of the splicing screen, cannot be flexibly and quickly installed and used, and reduces the touch accuracy.

[0019] Therefore, the infrared splicing touch screen of the present application adopts a double-side design, the infrared lamp tubes are arranged only on the upper and lower sides of the splicing screen, and there are no infrared lamp tubes on the left and right sides, thereby avoiding the problem that the light of the infrared lamp tubes on the left and right sides is blocked due to uneven splicing. Further, by increasing the density of the infrared lamp tubes near the splicing position of the splicing screen, the number of light is increased, thereby avoiding the problem that the number of cross-screen light on the upper and lower sides is reduced due to uneven splicing, so that the requirement for the splicing flatness of the splicing screen is not high, which facilitates the installation and use of the infrared splicing touch screen and improves the touch accuracy.

[0020] Please refer to Figure 1 which is a structural schematic diagram of the infrared splicing touch screen according to the embodiments of the present application. The infrared splicing touch screen provided by the embodiments of the present application includes at least two splicing screens, and the two splicing screens are arranged in splicing; the splicing screen includes a display screen 1, an emission lamp plate card 2 and a receiving lamp plate card 3; the emission lamp plate card 2 and the receiving lamp plate card 3 are arranged opposite to each other on the two sides of the display screen 1;

[0021] The first area 21 close to the splicing position on the emitting lamp board card 2 is provided with a plurality of first infrared emitting tubes 211; the second area 22 except the first area 21 on the emitting lamp board card 2 is provided with a plurality of second infrared emitting tubes 221; the arrangement density of the plurality of first infrared emitting tubes 211 is greater than the arrangement density of the plurality of second infrared emitting tubes 221;

[0022] The third area 31 close to the splicing position on the receiving lamp board card 3 is provided with a plurality of first infrared receiving tubes 311; the fourth area 32 except the third area 31 on the receiving lamp board card is provided with a plurality of second infrared receiving tubes 321; the arrangement density of the plurality of first infrared receiving tubes 311 is greater than the arrangement density of the plurality of second infrared receiving tubes 321.

[0023] The infrared spliced touch screen refers to at least two spliced screens being spliced together to form a spliced infrared touch device. Specifically, one of the spliced screens is a main screen, and the rest of the spliced screens are auxiliary screens. The main screen includes a main control module for controlling the main screen and each auxiliary screen to work. Taking two spliced screens being spliced side by side along the horizontal direction as an example, the left side is the main screen, and the right side is the auxiliary screen.

[0024] Each spliced screen includes a display screen 1, an emitting lamp board card 2, and a receiving lamp board card 3. Specifically, the display screen 1 is used to display various video image contents. The emitting lamp board card 2 includes an infrared emitting module and a plurality of infrared emitting tubes, and the infrared emitting module is used to drive the plurality of infrared emitting tubes to emit infrared light. The receiving lamp board card 3 includes an infrared receiving module and a plurality of infrared receiving tubes, and the infrared receiving module is used to drive the plurality of infrared receiving tubes to receive infrared light. One infrared receiving tube can receive infrared light emitted by one infrared emitting tube in a relative position, or can receive infrared light emitted by a plurality of infrared emitting tubes.

[0025] The first area 21 close to the splicing position on the emitting lamp board card 2 can be an edge area close to the splicing position on the emitting lamp board card 2. Specifically, it can be an end area of the emitting lamp board card 2. For example, the emitting lamp board card 2 is in a strip shape, and the first area is the left and right end areas of the strip-shaped emitting lamp board card. The second area 22 on the emitting lamp board card 2 can be a middle area of the emitting lamp board card 2.

[0026] The third area 31 close to the splicing position on the receiving lamp board card 3 can be an edge area close to the splicing position on the receiving lamp board card 3. Specifically, it can be an end area of the receiving lamp board card 3. For example, the receiving lamp board card 3 is in a strip shape, and the third area is the left and right end areas of the strip-shaped receiving lamp board card. The fourth area 32 on the receiving lamp board card 3 can be a middle area of the receiving lamp board card 3.

[0027] In the embodiments of the present application, taking the example that two spliced screens are spliced side by side along the horizontal direction, the infrared emission tubes in the left and right end regions of the emission lamp board card 2 of the spliced screen are arranged densely, and the infrared emission tubes in the middle region are arranged sparsely. The infrared receiving tubes in the left and right end regions of the receiving lamp board card of the spliced screen are arranged densely, and the infrared receiving tubes in the middle region are arranged sparsely.

[0028] For the left spliced screen, the infrared receiving tubes in the right end region of the receiving lamp board card 3 of the left spliced screen receive two parts of infrared light, the first part of infrared light comes from the infrared emission tubes on the emission lamp board card 2 of the left spliced screen, and the second part of light comes from the infrared emission tubes on the emission lamp board card 2 of the right spliced screen. Due to the uneven splicing of the left and right spliced screens, the second part of light will be covered, but due to the high density of the infrared emission tubes in the right end region of the emission lamp board card 2 of the left spliced screen, the number of the first part of infrared light is large, and the infrared receiving tubes in the right end region of the receiving lamp board card 3 of the left spliced screen can still receive a sufficient number of light, which does not affect the touch precision.

[0029] For the right spliced screen, the infrared receiving tubes in the left end region of the receiving lamp board card 3 of the right spliced screen receive two parts of infrared light, the first part of infrared light comes from the infrared emission tubes on the emission lamp board card 2 of the right spliced screen, and the second part of light comes from the infrared emission tubes on the emission lamp board card 2 of the left spliced screen. Due to the uneven splicing of the left and right spliced screens, the second part of light will be covered, but due to the high density of the infrared emission tubes in the left end region of the emission lamp board card 2 of the right spliced screen, the number of the first part of infrared light is large, and the infrared receiving tubes in the left end region of the receiving lamp board card 3 of the right spliced screen can still receive a sufficient number of light, which does not affect the touch precision.

[0030] By applying the embodiments of the present application, the spliced screen of the embodiments of the present application only arranges infrared lamp tubes on the two sides of the display screen, compared with the traditional method of arranging infrared lamp tubes on the four sides of the display screen, the problem that the light is covered due to uneven splicing when the light crosses from one side of one spliced screen to the other side of another spliced screen, resulting in the decrease of touch precision, is avoided. Further, by increasing the density of the infrared lamp tubes close to the splicing position, the number of light is increased, so that even if the infrared receiving tube close to the splicing position receives the crossed light from the infrared emission tube of another spliced screen which is covered due to uneven splicing, the infrared receiving tube close to the splicing position can still receive a sufficient number of light from the infrared emission tube of the spliced screen where the infrared receiving tube is located, so that the number of light received by the infrared receiving tube close to the splicing position is less affected by the flatness of the splicing of the spliced screen, thereby the requirement for the flatness of the splicing of the spliced screen in the infrared spliced touch screen is low, the installation and use of the infrared spliced touch screen are facilitated, and the touch precision is improved.

[0031] In one embodiment, the arrangement density of the first infrared emitting tubes gradually increases along a direction from the first region to the splicing position; and the arrangement density of the second infrared emitting tubes gradually increases along a direction from the second region to the first region.

[0032] In the embodiments of the present application, the arrangement distance of the first infrared emitting tubes in the first region gradually decreases along a direction from the first region to the splicing position, and the arrangement distance of the second infrared emitting tubes in the second region gradually decreases along a direction from the second region to the first region.

[0033] The arrangement density of the infrared emitting tubes is set as above in the embodiments of the present application, so that the arrangement density of the infrared emitting tubes closer to the splicing position is greater, the requirement for the splicing flatness of the spliced screens in the infrared spliced touch screen is reduced, the installation and use of the infrared spliced touch screen are facilitated, and the touch precision is improved.

[0034] Optionally, the arrangement density of the first infrared receiving tubes gradually increases along a direction from the third region to the splicing position; and the arrangement density of the second infrared receiving tubes gradually increases along a direction from the fourth region to the third region.

[0035] The arrangement density of the infrared receiving tubes is set as above, so that the arrangement density of the infrared receiving tubes closer to the splicing position is greater, the requirement for the splicing flatness of the spliced screens in the infrared spliced touch screen is reduced, the installation and use of the infrared spliced touch screen are facilitated, and the touch precision is improved.

[0036] In one embodiment, the arrangement density of the first infrared emitting tubes is the same, and the arrangement density of the second infrared emitting tubes is the same.

[0037] In the embodiments of the present application, the first infrared emitting tubes in the first region are arranged according to a fixed first distance, the second infrared emitting tubes in the second region are arranged according to a fixed second distance, and the first distance is smaller than the second distance.

[0038] The arrangement density of the infrared emitting tubes is set as above in the embodiments of the present application, so that the infrared emitting tubes are arranged simply, the requirement for the splicing flatness of the spliced screens in the infrared spliced touch screen is reduced, the installation and use of the infrared spliced touch screen are facilitated, and the touch precision is improved.

[0039] Optionally, the arrangement density of the first infrared receiving tubes is the same, and the arrangement density of the second infrared receiving tubes is the same.

[0040] The arrangement density of the infrared receiving lamp tubes is set, so that the infrared receiving lamp tubes are arranged simply, the requirement on the splicing flatness of the spliced screens in the infrared spliced touch screen is reduced, the installation and use of the infrared spliced touch screen are facilitated, and the touch precision is improved.

[0041] In one embodiment, the emission angle of the first infrared emitting tubes is smaller than the emission angle of the second infrared emitting tubes.

[0042] The emission angle of the infrared emitting tube refers to the included angle between the emission direction of the infrared emitting tube and the normal direction of the infrared emitting tube. The normal direction of the infrared emitting tube refers to the direction of the line connecting the infrared emitting tube and the oppositely arranged infrared receiving tube. For example, when the infrared emitting tube and the infrared receiving tube are arranged on the upper and lower edges of the spliced screen, the normal direction of the infrared emitting tube is the vertical direction.

[0043] In the embodiment of the present application, the emission angle of the second infrared emitting tube in the second area is set to be a large angle, and the emission angle of the first infrared emitting tube in the first area is set to be a small angle.

[0044] Since the second area is an area far away from the splicing position, the emission angle of the second infrared emitting tube is set to be a large angle, and the infrared light emitted by the second infrared emitting tube will not cross the screen to the infrared receiving tube of another spliced screen, but will be received by the infrared receiving tube of the spliced screen where the second infrared emitting tube is located, thereby avoiding the influence of the splicing unevenness on the light.

[0045] Since the first area is an area close to the splicing position, the emission angle of the first infrared emitting tube is set to be a small angle, and the distance of the cross-screen light from the first infrared emitting tube to the infrared receiving tube is short, so that the number of light beams covered due to the splicing unevenness is small, and the touch precision is not affected.

[0046] In one embodiment, the emission angle of the first infrared emitting tube gradually decreases along the direction from the first area to the splicing position, and the emission angle of the second infrared emitting tube gradually decreases along the direction from the second area to the first area.

[0047] In the embodiment of the present application, the emission angle of each first infrared emitting tube gradually decreases in an arithmetic sequence along the direction from the first area to the splicing position. The emission angle of each second infrared emitting tube gradually decreases in an arithmetic sequence along the direction from the second area to the first area.

[0048] Through the above setting of the emission angle of the infrared emitting tube, the emission angle of the infrared emitting tube closer to the splicing position is smaller, so that the number of light beams covered due to the splicing unevenness is small, and the touch precision is not affected.

[0049] In one embodiment, the emission angles of the first infrared emission tubes are the same, and the emission angles of the second infrared emission tubes are the same.

[0050] In the embodiments of the present application, the emission angle of each first infrared emission tube in the first region is set as a fixed first emission angle, and the emission angle of each first infrared emission tube in the second region is set as a fixed second emission angle, the first emission angle being smaller than the second emission angle.

[0051] Through the above setting of the emission angle of the infrared emission tube, the emission angle of the infrared emission tube is simple to set, and the number of light beams covered due to uneven splicing is small, which does not affect the touch precision.

[0052] In one embodiment, the maximum emission angle of the first infrared emission tube is smaller than a preset angle.

[0053] The preset angle can be set according to actual needs. For example, the preset angle is 5 degrees.

[0054] In the embodiments of the present application, the emission angle of each first infrared emission tube in the first region is set to be between 0 degrees and a preset angle.

[0055] Through the above setting of the emission angle of the first infrared emission tube, the emission angle of the first infrared emission tube is small, the distance of the cross-screen light beam from the first infrared emission tube to the infrared receiving tube is short, and thus the number of light beams covered due to uneven splicing is small, which does not affect the touch precision.

[0056] In one embodiment, the emission angle of the first infrared emission tube is 0 degrees.

[0057] In the embodiments of the present application, the emission angle of each first infrared emission tube in the first region is set to be 0 degrees, so that the infrared light emitted by the infrared emission tube in the spliced screen does not cross the screen to another spliced screen, avoiding the influence of light beams on uneven splicing, and improving the touch precision.

[0058] Please refer to Figure 2 which is a structural schematic diagram of the interactive panel according to the embodiments of the present application. The interactive panel 10 provided by the embodiments of the present application includes the infrared spliced touch screen 100 as described above.

[0059] In the embodiments of the present application, the infrared spliced touch screen 100 is applied to the interactive panel 10, and during the installation of the interactive panel 10, since the splicing flatness requirement of the spliced screen in the infrared spliced touch screen 100 is low, the installation and use of the interactive panel 10 is facilitated, and the touch precision of the interactive panel 10 is improved.

[0060] It should also be noted that the terms "comprising", "comprises" or other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0061] The above embodiments are only used to illustrate the present application, but not to limit it. Instead of the above, various modifications and changes can be made to the application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall fall into the scope of the claims of the application.

Claims

1. An infrared tiled touch screen, characterized by, At least two spliced screens are included, and the two spliced screens are spliced together; the spliced screen comprises a display screen, a transmitting light board card and a receiving light board card; The transmitting light board card and the receiving light board card are oppositely arranged on two sides of the display screen; A first area close to a splicing position on the transmitting light board card is provided with a plurality of first infrared transmitting tubes; a second area on the transmitting light board card except the first area is provided with a plurality of second infrared transmitting tubes; the arrangement density of the plurality of first infrared transmitting tubes is greater than that of the plurality of second infrared transmitting tubes; A third area close to a splicing position on the receiving light board card is provided with a plurality of first infrared receiving tubes; a fourth area on the receiving light board card except the third area is provided with a plurality of second infrared receiving tubes; the arrangement density of the plurality of first infrared receiving tubes is greater than that of the plurality of second infrared receiving tubes.

2. The infrared spliced touch screen according to claim 1, wherein: The arrangement density of the plurality of first infrared transmitting tubes gradually increases along a direction from the first area to the area close to the splicing position; and the arrangement density of the plurality of second infrared transmitting tubes gradually increases along a direction from the second area to the first area.

3. The infrared spliced touch screen according to claim 1, wherein: The arrangement density of the plurality of first infrared transmitting tubes is the same, and the arrangement density of the plurality of second infrared transmitting tubes is the same.

4. The infrared spliced touch screen according to any one of claims 1 to 3, wherein: The emission angle of the plurality of first infrared transmitting tubes is smaller than that of the plurality of second infrared transmitting tubes.

5. The infrared spliced touch screen according to claim 4, wherein: The emission angle of the plurality of first infrared transmitting tubes gradually decreases along a direction from the first area to the area close to the splicing position; and the emission angle of the plurality of second infrared transmitting tubes gradually decreases along a direction from the second area to the first area.

6. The infrared spliced touch screen according to claim 4, wherein: The emission angle of the plurality of first infrared transmitting tubes is the same, and the emission angle of the plurality of second infrared transmitting tubes is the same.

7. The infrared spliced touch screen according to claim 4, wherein: The maximum emission angle of the plurality of first infrared transmitting tubes is smaller than a preset angle.

8. The infrared spliced touch screen according to claim 4, wherein: The emission angle of the plurality of first infrared transmitting tubes is 0 degree.

9. An interactive panel comprising the infrared spliced touch screen according to any one of claims 1 to 8.

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