CN219370328U - Infrared touch frame structure and display device - Google Patents
Infrared touch frame structure and display device Download PDFInfo
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- CN219370328U CN219370328U CN202320614110.1U CN202320614110U CN219370328U CN 219370328 U CN219370328 U CN 219370328U CN 202320614110 U CN202320614110 U CN 202320614110U CN 219370328 U CN219370328 U CN 219370328U
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- inclined plane
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- reflection inclined
- infrared
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Abstract
The utility model discloses an infrared touch frame structure and display equipment, wherein the infrared touch frame structure comprises a plurality of touch frame units, each touch frame unit comprises a frame body, an infrared touch module and a light filtering strip, the frame body is provided with a containing cavity with an opening, and a specular reflection inclined plane is arranged in the containing cavity; the infrared touch module is arranged in the accommodating cavity, the opening and the infrared touch module are respectively positioned at two sides of the touch panel, and a first light path is formed between the infrared touch module and the mirror reflection inclined plane; the optical filter strip is provided with a total reflection inclined plane, a second optical path and a third optical path are formed between the total reflection inclined plane and the mirror reflection inclined plane and between the total reflection inclined plane and the opening, and the transmission path of infrared light is converted among the first optical path, the second optical path and the third optical path through the mirror reflection inclined plane and the total reflection inclined plane. The technical scheme of the utility model solves the problem that the frame body of the existing infrared touch frame structure is thicker.
Description
Technical Field
The utility model relates to the technical field of infrared touch control, in particular to an infrared touch frame structure and display equipment.
Background
The infrared touch technology is an on-screen touch technology in which an infrared lamp is arranged at the edge of a screen, the infrared lamp is arranged in a section cavity in a conventional assembly mode, a section frame is arranged outside the periphery of glass, the light emitting surface of the infrared lamp faces the front side of the glass, infrared light directly penetrates through a light filtering strip to form opposite incidence, the section frame is thick and is large in edge wrapping, and the touch height is relatively high.
Based on the updating requirement of appearance, the height of the lamp bead, the height of the light filtering strip and the assembled section bar in the conventional assembly mode have larger influence on the overall size, the appearance is not attractive, and the writing effect of the edge is ensured by designing larger black edge distance.
Disclosure of Invention
The utility model mainly aims to provide an infrared touch frame structure, and aims to solve the problem that a frame body of the existing infrared touch frame structure is thicker.
In order to achieve the above object, the present utility model provides an infrared touch frame structure, including a plurality of touch frame units, the touch frame units including:
the frame body is arranged at the periphery of the touch panel and is provided with an accommodating cavity with an opening, and a specular reflection inclined plane is arranged in the accommodating cavity;
the infrared touch module is arranged in the accommodating cavity, the opening and the infrared touch module are respectively positioned on the front side and the back side of the touch pad, and a first light path is formed between the infrared touch module and the specular reflection inclined plane;
the light filtering strip is arranged at the opening to block the opening, the light filtering strip is provided with a total reflection inclined plane, a second light path and a third light path are formed between the total reflection inclined plane and the mirror reflection inclined plane and between the total reflection inclined plane and the opening, the transmission path of infrared light is converted between the first light path and the second light path through the mirror reflection inclined plane, and is converted between the second light path and the third light path through the total reflection inclined plane.
In one embodiment, a gap is provided between the total reflection inclined plane and the frame.
In one embodiment of the present utility model, in one embodiment,
the included angle between the first light path and the specular reflection inclined plane is 40-90 degrees, and the refractive index of the filter strip is not less than 1.556; and/or the number of the groups of groups,
the included angle between the second light path and the total reflection inclined plane is 40-90 degrees.
In an embodiment, an included angle between the second light path and the total reflection inclined plane is 45 °, and a refractive index of the filter strip is not less than 1.414; and/or the number of the groups of groups,
the included angle between the first light path and the specular reflection inclined plane is 45 degrees.
In an embodiment, the included angle between the surface of the filter strip facing the opening side and the third light path is 88 ° -92 °; and/or the number of the groups of groups,
the included angle between the surface of the filter strip, which is close to one side of the infrared touch module, and the second light path is 88-92 degrees.
In one embodiment, the specular reflection slope is attached with a reflective film or subjected to surface specular treatment.
In an embodiment, the upper end of the light filtering strip extends to the upper side of the touch panel towards the opening, a first clamping groove is concavely formed in the upper end of the light filtering strip, and the upper end of the frame body is bent downwards to form a first clamping block matched with the first clamping groove; and/or the number of the groups of groups,
the lower extreme of filter strip is located in the framework lateral wall with between the touch pad perisporium, the side of holding chamber wall is concave to be equipped with the second draw-in groove, the lateral wall of filter strip be equipped with the second fixture block of second draw-in groove adaptation.
In an embodiment, the wall of the accommodating cavity is further concavely provided with a third clamping groove, the infrared touch module comprises a lamp bead and a circuit board which are electrically connected, the circuit board is installed in the third clamping groove and located below the mirror reflection inclined plane, and the lamp bead is installed on the circuit board with the light emitting surface facing the mirror reflection inclined plane.
In an embodiment, at least two of the touch frame units are respectively disposed on two opposite sides of the touch pad, and the touch frame units disposed on two opposite sides are respectively configured to transmit and receive infrared light.
The utility model also provides display equipment comprising the infrared touch frame structure.
According to the technical scheme, the infrared touch module is arranged on the back side of the touch pad, and the transmission direction of infrared light is adjusted by utilizing the specular reflection inclined plane and the total reflection inclined plane, so that the problem that the frame body of the existing infrared touch frame structure is thicker is solved. In the technical scheme of the utility model, the infrared touch module is arranged on the back side of the touch pad, so that the width a2 and the thickness b2 of the infrared touch frame structure are far smaller than the width a1 and the thickness b1 corresponding to the existing infrared touch frame structure, and the size of the infrared touch frame structure only comprises the thickness of the filter strip and the thickness of the frame body when seen from the front, and the front of the frame body is close to the front of the touch pad in a flush state, so that the touch blind area of the infrared touch frame structure is smaller; in addition, in the technical scheme, after infrared light is reflected by the specular reflection inclined plane and the total reflection inclined plane in sequence, the infrared light passing through the opening and being parallel to the surface of the touch panel is narrower in height and is closer to glass, so that the touch control height realized by touch control is lower, and the touch control experience effect is better.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an infrared touch frame structure in the prior art;
FIG. 2 is a schematic diagram of an infrared touch frame structure according to an embodiment of the present utility model;
fig. 3 is a partial schematic view of fig. 2.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 100 | Infrared touch frame structure | 110 | Touch frame unit |
| 111 | Frame body | 1111 | Accommodating cavity |
| 1111a | An opening | 1113 | Specular reflection inclined plane |
| 1115 | First clamping block | 113 | Infrared touch module |
| 1131 | Lamp bead | 1133 | Circuit board |
| 115 | Filter strip | 1151 | Total reflection inclined plane |
| 1153 | Second clamping block | L1 | First optical path |
| L2 | Second optical path | L3 | Third optical path |
| 130 | Touch panel |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, if the meaning of "and/or" is presented throughout this document, it is intended to include three schemes in parallel, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
Referring to fig. 1, in the conventional infrared touch frame structure, an infrared touch module installed in a frame is generally located at a peripheral side of a touch pad, the infrared touch module includes a lamp bead and a circuit board that are electrically connected, a light emitting surface/a light incoming surface of the lamp bead faces a light emitting opening of the frame, a light filtering strip is disposed at the light emitting opening of the frame, and infrared light emitted by the lamp bead passes through the light filtering strip and passes through the light emitting opening of the frame. The width and thickness of the frame body edge-covering of the existing infrared touch frame are too large, the width a1 and the thickness b1 are too large, the overall aesthetic property of the infrared touch frame structure can be affected, and a large black edge distance is required to be designed to ensure the writing effect of the edge.
To solve the above technical problems, the present utility model proposes an infrared touch frame structure 100.
Referring to fig. 2 and 3, in the embodiment of the utility model, the infrared touch frame structure includes a plurality of touch frame units 110, at least two of the touch frame units 110 are respectively disposed on two opposite sides of the touch pad 130, and the touch frame units 110 disposed on the two opposite sides are respectively configured to transmit and receive infrared light. The touch frame unit 110 includes a frame 111, an infrared touch module 113, and a filter bar 115, where the frame 111 is disposed at the periphery of the touch panel 130, the frame 111 is provided with a receiving cavity 1111 having an opening 1111a, a specular reflection inclined surface 1113 is disposed in the receiving cavity 1111, and the specular reflection inclined surface 1113 may be integrally formed with the frame 111 or separately formed; the infrared touch module 113 is disposed in the accommodating cavity 1111, the opening 1111a and the infrared touch module 113 are respectively disposed on the front and back sides of the touch panel 130, and a first optical path L1 is formed between the infrared touch module 113 and the specular reflection inclined plane 1113; the filter bar 115 is disposed at the opening 1111a to block the opening 1111a, the filter bar 115 is provided with a total reflection inclined plane 1151, a second optical path L2 and a third optical path L3 are formed between the total reflection inclined plane 1151 and the specular reflection inclined plane 1113 and the opening 1111a, respectively, a transmission path of infrared light is converted between the first optical path L1 and the second optical path L2 through the specular reflection inclined plane 1113, and is converted between the second optical path L2 and the third optical path L3 through the total reflection inclined plane 1151.
Specifically, the opening 1111a and the infrared touch module 113 are respectively located above and below the touch pad 130, and the filter bar 115 is disposed on the peripheral side of the touch pad 130; the filter bar 115 is disposed above the specular reflection inclined surface 1113, the total reflection inclined surface 1151 is formed at a side of an upper end of the filter bar 115 facing away from the opening 1111a, and the total reflection inclined surface 1151 and the specular reflection inclined surface 1113 are symmetrically disposed.
When the infrared touch frame structure 100 is in an operating state, the touch frame unit 110 on one side of the touch pad 130 is used as an infrared light emitting end, in the touch frame unit 110, the infrared touch module 113 emits infrared light toward the specular reflection inclined plane 1113 along the first optical path L1, when the infrared light is transmitted to the specular reflection inclined plane 1113 and is specularly reflected along the second optical path L2 via the specular reflection inclined plane 1113, the infrared light enters the filter strip 115 and is transmitted to the total reflection inclined plane 1151, and then the total reflection inclined plane 1151 totally reflects the infrared light along the third optical path L3 to pass through the opening 1111a; the infrared light then continues to be transmitted to the touch frame unit 110 as the infrared light receiving end on the other side of the touch pad 130 along the extending direction of the third light path L3, and the infrared light is transmitted in the opposite directions to the transmission paths of the touch frame unit 110 as the infrared light transmitting end and the receiving end, respectively.
According to the technical scheme, the infrared touch module 113 is arranged on the back side of the touch panel 130, and the transmission direction of infrared light is adjusted by utilizing the specular reflection inclined plane 1113 and the total reflection inclined plane 1151, so that the problem that the frame body of the existing infrared touch frame structure is thicker is solved. In the technical scheme of the utility model, the infrared touch module 113 is arranged on the back side of the touch pad 130, so that the width a2 and the thickness b2 of the infrared touch frame structure 100 are far smaller than the width a1 and the thickness b1 corresponding to the existing infrared touch frame structure shown in fig. 1, and the size of the infrared touch frame structure 100 only comprises the thickness of the filter strip 115 and the thickness of the frame 111 when seen from the front, and the front of the frame 111 is close to the front of the touch pad 130 in a flush state, so that the touch blind area of the infrared touch frame structure 100 is smaller; in addition, in this embodiment, after the infrared light is reflected by the specular reflection inclined surface 1113 and the total reflection inclined surface 1151, the infrared light passing through the opening 1111a and being parallel to the surface of the touch pad 130 is narrower and is closer to the glass, so that the touch height achieved by the touch is lower, and the touch experience effect is better.
With continued reference to fig. 3, further, a gap is formed between the total reflection inclined plane 1151 and the frame 111. Since the infrared light enters the optical/hydrophobic medium from the optical dense medium and the incident angle is equal to or larger than the critical angle, the total reflection bevel 1151 preferably has a certain gap with the frame 111, so that the infrared light entering the filter strip 115 is convenient for total reflection, and cannot be closely attached.
The specular reflection slope 1113 is consistent with an angle between the first optical path L1 and the second optical path L2, and the total reflection slope 1151 is consistent with an angle between the second optical path L2 and the third optical path L3. In one embodiment, the angle between the second light path L2 and the total reflection inclined plane 1151 is 40 ° -90 °, the angle between the first light path L1 and the specular reflection inclined plane 1113 is 40 ° -90 °, and the refractive index of the filter bar 115 is not less than 1.556; preferably, the angle between the second optical path L2 and the total reflection inclined plane 1151 is 45 °, the angle between the first optical path L1 and the specular reflection inclined plane 1113 is 45 °, the refractive index of the filter strip 115 is not less than 1.414, and the larger the refractive index of the filter strip 115, the more advantageous the reflectivity of the total reflection inclined plane 1151 is.
Still further, in order to avoid reflection and interference of more natural light when the infrared light enters or leaves the filter strip 115 as much as possible, thereby affecting the touch effect, an angle between a surface of the filter strip 115 facing the infrared touch module 113 and the first optical path L1 is 88 ° -92 °, an angle between a surface of the filter strip 115 facing the opening 1111a and the third optical path L3 is 88 ° -90 °, a surface of the filter strip 115 facing the infrared touch module 113 is nearly perpendicular to the first optical path L1, and a surface of the filter strip 115 facing the opening 1111a is nearly perpendicular to the third optical path L3; preferably, the angle between the surface of the filter strip 115 facing the opening 1111a and the third optical path L3 is 90 °, the angle between the surface of the filter strip 115 near the infrared touch module 113 and the second optical path L2 is 90 °, that is, the first optical path L1 is perpendicular to the surface of the filter strip 115 facing the infrared touch module 113, and the third optical path L3 is perpendicular to the surface of the filter strip 115 facing the opening 1111 a.
It is understood that the specular reflection slope 1113 is coated with a reflective film or subjected to surface specular treatment in order to enhance the reflectivity of the specular reflection slope 1113 to the infrared light 1.
With continued reference to fig. 3, in an embodiment of the present utility model, the upper end of the filter strip 115 extends above the touch pad 130 toward the opening 1111a, a first clamping groove is concavely formed at the upper end of the filter strip 115, a first clamping block 1115 adapted to the first clamping groove is formed at the upper end of the frame 111 by bending downwards, and the first clamping block 1115 is clamped in the first clamping groove to limit the filter strip 115 from moving along the X-axis direction (i.e. moving left and right); the lower end of the filter strip 115 is disposed between the inner side wall of the frame 111 and the peripheral wall of the touch pad 130, a second clamping groove is concavely disposed on a side edge of the cavity wall of the accommodating cavity 1111, a second clamping block 1153 adapted to the second clamping groove is disposed on the side wall of the filter strip 115, and the second clamping block 1153 is clamped in the second clamping groove to limit the filter strip 115 to move along the Y-axis direction (i.e., move up and down).
In addition, the cavity wall of the accommodating cavity 1111 is further concavely provided with a third clamping groove, the infrared touch module 113 includes a lamp bead 1131 and a circuit board 1133 which are electrically connected, the circuit board 1133 is installed in the third clamping groove to prevent the lamp bead 1131 from being deviated, so as to influence the transmission of infrared light, the third clamping groove is located below the mirror reflection inclined plane 1113, the circuit board 1133 is located below the mirror reflection inclined plane 1113, the lamp bead 1131 is installed on the circuit board 1133, the light emitting surface of the lamp bead 1131 faces the mirror reflection inclined plane 1113, and the total space width occupied by the circuit board 1133 and the mirror reflection inclined plane 1113 can be reduced as much as possible by arranging the end part of the circuit board 1133 and the mirror reflection inclined plane 1113 up and down, so that the whole volume of the infrared touch frame structure 100 is reduced.
The utility model also provides a display device, which comprises an infrared touch frame structure 100, and the specific structure of the infrared touch frame structure refers to the above embodiment.
The foregoing examples are illustrative only and serve to explain some features of the method of the utility model. The appended claims are intended to claim the broadest possible scope and the embodiments presented herein are merely illustrative of selected implementations based on combinations of all possible embodiments. It is, therefore, not the intention of the applicant that the appended claims be limited by the choice of examples illustrating the features of the utility model. Some numerical ranges used in the claims also include sub-ranges within which variations in these ranges should also be construed as being covered by the appended claims where possible.
Claims (10)
1. An infrared touch frame structure comprising a plurality of touch frame units, wherein the touch frame units comprise:
the frame body is arranged at the periphery of the touch panel and is provided with an accommodating cavity with an opening, and a specular reflection inclined plane is arranged in the accommodating cavity;
the infrared touch module is arranged in the accommodating cavity, the opening and the infrared touch module are respectively positioned on the front side and the back side of the touch pad, and a first light path is formed between the infrared touch module and the specular reflection inclined plane;
the light filtering strip is arranged at the opening to block the opening, the light filtering strip is provided with a total reflection inclined plane, a second light path and a third light path are formed between the total reflection inclined plane and the mirror reflection inclined plane and between the total reflection inclined plane and the opening, the transmission path of infrared light is converted between the first light path and the second light path through the mirror reflection inclined plane, and is converted between the second light path and the third light path through the total reflection inclined plane.
2. The infrared touch frame structure of claim 1, wherein a gap is provided between the total reflection slope and the frame.
3. The infrared touch frame structure of claim 2, wherein an included angle between the first optical path and the specular reflection slope is 40 ° -90 °, and a refractive index of the filter bar is not less than 1.556; and/or the number of the groups of groups,
the included angle between the second light path and the total reflection inclined plane is 40-90 degrees.
4. The infrared touch frame structure of claim 3, wherein an included angle between the second light path and the total reflection inclined plane is 45 °, and a refractive index of the filter bar is not less than 1.414; and/or the number of the groups of groups,
the included angle between the first light path and the specular reflection inclined plane is 45 degrees.
5. The infrared touch frame structure of claim 2, wherein an included angle between a surface of the filter bar facing the opening side and the third light path is 88 ° -92 °; and/or the number of the groups of groups,
the included angle between the surface of the filter strip, which is close to one side of the infrared touch module, and the second light path is 88-92 degrees.
6. The infrared touch frame structure of claim 1, wherein the specular reflection slope is attached with a reflective film or subjected to surface specular treatment.
7. The infrared touch frame structure of claim 1, wherein the upper end of the filter strip extends to the upper part of the touch panel towards the opening, a first clamping groove is concavely formed at the upper end of the filter strip, and the upper end of the frame body is bent downwards to form a first clamping block matched with the first clamping groove; and/or the number of the groups of groups,
the lower extreme of filter strip is located in the framework lateral wall with between the touch pad perisporium, the side of holding chamber wall is concave to be equipped with the second draw-in groove, the lateral wall of filter strip be equipped with the second fixture block of second draw-in groove adaptation.
8. The infrared touch frame structure of claim 7, wherein the wall of the accommodating cavity is further concavely provided with a third clamping groove, the infrared touch module comprises a lamp bead and a circuit board which are electrically connected, the circuit board is installed in the third clamping groove and is located below the specular reflection inclined plane, and the lamp bead is installed on the circuit board with the light emitting surface facing the specular reflection inclined plane.
9. The infrared touch frame structure of claim 1, wherein at least two of the touch frame units are disposed on opposite sides of the touch pad, respectively, and the touch frame units disposed on opposite sides are configured to emit and receive infrared light, respectively.
10. A display device comprising an infrared touch frame structure as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320614110.1U CN219370328U (en) | 2023-03-16 | 2023-03-16 | Infrared touch frame structure and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320614110.1U CN219370328U (en) | 2023-03-16 | 2023-03-16 | Infrared touch frame structure and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219370328U true CN219370328U (en) | 2023-07-18 |
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ID=87147385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320614110.1U Active CN219370328U (en) | 2023-03-16 | 2023-03-16 | Infrared touch frame structure and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219370328U (en) |
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2023
- 2023-03-16 CN CN202320614110.1U patent/CN219370328U/en active Active
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