CN219574788U - Infrared touch frame structure and display device - Google Patents
Infrared touch frame structure and display device Download PDFInfo
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- CN219574788U CN219574788U CN202320581240.XU CN202320581240U CN219574788U CN 219574788 U CN219574788 U CN 219574788U CN 202320581240 U CN202320581240 U CN 202320581240U CN 219574788 U CN219574788 U CN 219574788U
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- reflection inclined
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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, the touch frame units comprise a frame body and a light filtering strip, the frame body is provided with a containing cavity with an opening, an infrared touch module is arranged in the containing cavity, and the opening and the infrared touch module are respectively positioned on the front side and the back side of a touch panel; the two opposite ends of the filter strip are respectively provided with a first total reflection inclined plane and a second total reflection inclined plane which are oppositely arranged, a first light path and a second light path are formed between the first total reflection inclined plane and the infrared touch module and between the first total reflection inclined plane and the second total reflection inclined plane, and a third light path is formed between the second total reflection inclined plane and the opening; the transmission path of the infrared light is switched between the first light path and the second light path by the first total reflection inclined plane, and is switched between the second light path and the third light path by the second total reflection inclined plane.
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, an infrared touch module is arranged in the accommodating cavity, and the opening and the infrared touch module are respectively positioned at the front side and the back side of the touch panel;
the optical filter strip is arranged at the opening to block the opening, a first total reflection inclined plane and a second total reflection inclined plane which are oppositely arranged are respectively arranged at the opposite ends of the optical filter strip, a first light path and a second light path are respectively formed between the first total reflection inclined plane and the infrared touch module and between the first total reflection inclined plane and the second total reflection inclined plane, and a third light path is formed between the second total reflection inclined plane and the opening;
the transmission path of the infrared light is switched between the first light path and the second light path by the first total reflection inclined plane, and is switched between the second light path and the third light path by the second total reflection inclined plane.
In an embodiment, a gap is formed between the first total reflection inclined plane and/or the second total reflection inclined plane and the frame body.
In an embodiment, an included angle between the first light path and the first total reflection inclined plane 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 second total reflection inclined plane is 40-90 degrees.
In an embodiment, the refractive index of the filter bar is not less than 1.414, the angle between the first light path and the first total reflection inclined plane is 45 °, and/or the angle between the second light path and the second total reflection inclined plane is 45 °.
In an embodiment, an included angle between a surface of the filter strip facing one side of the infrared touch module and the first light path is 88 ° -92 °; and/or the included angle between the surface of the filter strip facing the opening side and the third light path is 88-92 degrees.
In one embodiment, the upper end of the filter strip extends upwards to block the opening, and the second total reflection inclined plane is formed on one side of the upper end of the filter strip, which is opposite to the opening; the lower end of the filter strip extends downwards to a position corresponding to the infrared touch module, and the first total reflection inclined plane is formed at one side of the lower end of the filter strip, which is away from the infrared touch module.
In an embodiment, the infrared touch module includes a lamp bead and a circuit board that are electrically connected, and a light emitting surface or a light incident surface of the lamp bead faces the first total reflection inclined plane.
In an embodiment, a first clamping groove is concavely formed in the side edge of the cavity wall of the accommodating cavity, and a first clamping block matched with the first clamping groove is convexly arranged on the side wall of the optical filtering strip; and/or the number of the groups of groups,
the lower end of the light filtering strip extends towards the direction of the lamp beads to form a second clamping block, a second clamping groove is concavely formed in the inner wall of the light filtering strip, and the lower end of the second clamping block is clamped in the second clamping groove; and/or the number of the groups of groups,
the cavity wall of the accommodating cavity is also concavely provided with a third clamping groove, and the circuit board is clamped in the third clamping groove.
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 panel, and the transmission direction of infrared light is adjusted by utilizing the first total reflection inclined plane and the second 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 sequentially passes through the first total reflection inclined plane and the second total reflection inclined plane, the infrared light passing through the opening and being parallel to the surface of the touch panel is narrower in height and closer to glass, so that the touch control realized is lower in touch control height and better in touch control experience effect.
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 | 113 | Infrared touch module |
| 1131 | Lamp bead | 1133 | Circuit board |
| 115 | Filter strip | 1151 | First total reflection inclined plane |
| 1153 | Second total reflection inclined plane | 1155 | First clamping block |
| 1157 | 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 100 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 and a filter bar 115, 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, an infrared touch module 113 is disposed in the receiving cavity 1111, and the opening 1111a and the infrared touch module 113 are respectively located at the front and back sides of the touch panel 130; the filter strip 115 is disposed at the opening 1111a to block the opening 1111a, two opposite ends of the filter strip 115 are respectively provided with a first total reflection inclined plane 1151 and a second total reflection inclined plane 1153 which are disposed opposite to each other, a first light path L1 and a second light path L2 are formed between the first total reflection inclined plane 1151 and the infrared touch module 113 and the second total reflection inclined plane 1153, and a third light path L3 is formed between the second total reflection inclined plane 1153 and the opening 1111a; the transmission path of the infrared light is switched between the first optical path L1 and the second optical path L2 by the first total reflection inclined plane 1151, and is switched between the second optical path L2 and the third optical path L3 by the second total reflection inclined plane 1153.
Specifically, the opening 1111a and the infrared touch module 113 are respectively located above and below the touch pad 130, and the filter strip 115 is disposed on the peripheral side of the touch pad 130. The upper end of the filter strip 115 extends upward to block the opening 1111a, and the second total reflection inclined plane 1153 is formed on a side of the upper end of the filter strip 115 facing away from the opening 1111a; the lower end of the filter bar 115 extends downward to a position corresponding to the infrared touch module 113, and the first total reflection inclined plane 1151 is formed on a side of the lower end of the filter bar 115 facing away from the infrared touch module 113.
When the infrared touch frame structure 100 is in the working 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 first total reflection inclined plane 1151 along the first light path L1, when the infrared light is transmitted onto the first total reflection inclined plane 1151, the first total reflection inclined plane 1151 totally reflects the infrared light onto the second total reflection inclined plane 1153 along the second light path L2, and then the second total reflection inclined plane 1153 totally reflects the infrared light along the third light 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 of the utility model, 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 first total reflection inclined plane 1151 and the second total reflection inclined plane 1153, so that the problem that the frame 111 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, 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 technical solution, after the infrared light passes through the first total reflection inclined plane 1151 and the second total reflection inclined plane 1153 in sequence, 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 first total reflection inclined plane 1151 and/or the second total reflection inclined plane 1153 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 greater than the critical angle, in order to make the infrared light entering the filter strip 115 be convenient for total reflection, a certain gap is preferably left between the first total reflection inclined plane 1151 and the second total reflection inclined plane 1153 and the frame 111, so that the infrared light cannot be closely attached.
The first total reflection inclined plane 1151 is consistent with an included angle between the first optical path L1 and the second optical path L2, and the second total reflection inclined plane 1153 is consistent with an included angle between the second optical path L2 and the third optical path L3. In one embodiment, the angle between the first light path L1 and the first total reflection inclined plane 1151 is 40 ° -90 °, the angle between the second light path L2 and the second total reflection inclined plane 1153 is 40 ° -90 °, and the refractive index of the filter bar 115 is not less than 1.556; preferably, the angle between the first optical path L1 and the first total reflection inclined plane 1151 is 45 °, the angle between the second optical path L2 and the second total reflection inclined plane 1153 is 45 °, the refractive index of the filter bar 115 is not less than 1.414, and the larger the refractive index of the filter bar 115, the more advantageous the reflectivity of the first total reflection inclined plane 1151 and the second total reflection inclined plane 1153 is.
Still further, in order to avoid reflection when infrared light enters or leaves the filter bar 115 as much as possible, an included angle between a surface of the filter bar 115 facing the infrared touch module 113 and the first optical path L1 is 88 ° -92 °, an included angle between a surface of the filter bar 115 facing the opening 1111a and the third optical path L3 is 88 ° -92 °, a surface of the filter bar 115 facing the infrared touch module 113 is nearly perpendicular to the first optical path L1, and a surface of the filter bar 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 infrared touch module 113 and the first optical path L1 is 90 °, the angle between the surface of the filter strip 115 facing the opening 1111a and the third optical path L3 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.
In an embodiment of the present utility model, the infrared touch module 113 includes a lamp bead 1131 and a circuit board 1133 that are electrically connected, the lamp bead 1131 is mounted above the circuit board 1133, a light emitting surface or a light entering surface of the lamp bead 1131 faces the first total reflection inclined plane 1151, and the infrared light emitted from the lamp bead 1131 in the horizontal direction is totally reflected by the first total reflection inclined plane 1151 to the second total reflection inclined plane 1153.
A first clamping groove is concavely formed in a side edge of the cavity wall of the accommodating cavity 1111, a first clamping block 1155 adapted to the first clamping groove is convexly formed on a side wall of the filter strip 115, and the first clamping block 1155 is clamped in the first clamping groove to prevent the filter strip 115 from moving (i.e. moving up and down) along the Y-axis direction; the lower end of the filter strip 115 extends towards the direction of the lamp bead 1131 to form a second clamping block 1157, a second clamping groove is concavely formed in the inner wall of the filter strip 115, and the lower end of the second clamping block 1157 is clamped in the second clamping groove to prevent the filter strip 115 from moving along the X-axis direction (i.e., moving left and right); during the assembly process of the filter strip 115, the filter strip 115 is limited by using the first clamping groove and the second clamping groove, so as to avoid the filter strip 115 from shifting in the accommodating cavity 1111 or falling from the frame 111. The wall of the accommodating cavity 1111 is further concavely provided with a third slot, and the circuit board 1133 is fixed in the third slot to prevent the lamp bead 1131 from deviating, thereby affecting the transmission of infrared light.
The utility model also provides a display device, which comprises an infrared touch frame structure 100, wherein the specific structure of the infrared touch frame structure 100 refers to the above embodiment, and since the display device adopts all the technical schemes of all the embodiments, at least has all the beneficial effects brought by the technical schemes of the embodiments, and the detailed description is omitted herein.
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, an infrared touch module is arranged in the accommodating cavity, and the opening and the infrared touch module are respectively positioned at the front side and the back side of the touch panel;
the optical filter strip is arranged at the opening to block the opening, a first total reflection inclined plane and a second total reflection inclined plane which are oppositely arranged are respectively arranged at the opposite ends of the optical filter strip, a first light path and a second light path are respectively formed between the first total reflection inclined plane and the infrared touch module and between the first total reflection inclined plane and the second total reflection inclined plane, and a third light path is formed between the second total reflection inclined plane and the opening;
the transmission path of the infrared light is switched between the first light path and the second light path by the first total reflection inclined plane, and is switched between the second light path and the third light path by the second total reflection inclined plane.
2. The infrared touch frame structure of claim 1, wherein the first and/or second total reflection inclined planes have a gap between them.
3. The infrared touch frame structure of claim 2, wherein an included angle between the first light path and the first total reflection inclined plane 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 second total reflection inclined plane is 40-90 degrees.
4. The infrared touch frame structure of claim 3, wherein the refractive index of the filter bar is not less than 1.414, the angle between the first optical path and the first total reflection inclined plane is 45 °, and/or the angle between the second optical path and the second total reflection inclined plane is 45 °.
5. The infrared touch frame structure of claim 2, wherein an included angle between a surface of the filter bar facing the side of the infrared touch module and the first optical path is 88 ° -92 °; and/or the included angle between the surface of the filter strip facing the opening side and the third light path is 88-92 degrees.
6. The infrared touch frame structure of claim 1, wherein an upper end of the filter bar extends upward to block the opening, and the second total reflection inclined surface is formed on a side of the upper end of the filter bar facing away from the opening; the lower end of the filter strip extends downwards to a position corresponding to the infrared touch module, and the first total reflection inclined plane is formed at one side of the lower end of the filter strip, which is away from the infrared touch module.
7. The infrared touch frame structure of claim 6, wherein the infrared touch module comprises a lamp bead and a circuit board which are electrically connected, and a light emitting surface or a light incoming surface of the lamp bead faces the first total reflection inclined surface.
8. The infrared touch frame structure of claim 7, wherein a first clamping groove is concavely formed in the side edge of the cavity wall of the accommodating cavity, and a first clamping block matched with the first clamping groove is convexly formed in the side wall of the optical filtering strip; and/or the number of the groups of groups,
the lower end of the light filtering strip extends towards the direction of the lamp beads to form a second clamping block, a second clamping groove is concavely formed in the inner wall of the light filtering strip, and the lower end of the second clamping block is clamped in the second clamping groove; and/or the number of the groups of groups,
the cavity wall of the accommodating cavity is also concavely provided with a third clamping groove, and the circuit board is clamped in the third clamping groove.
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 |
|---|---|---|---|
| CN202320581240.XU CN219574788U (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 |
|---|---|---|---|
| CN202320581240.XU CN219574788U (en) | 2023-03-16 | 2023-03-16 | Infrared touch frame structure and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219574788U true CN219574788U (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320581240.XU Active CN219574788U (en) | 2023-03-16 | 2023-03-16 | Infrared touch frame structure and display device |
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| Country | Link |
|---|---|
| CN (1) | CN219574788U (en) |
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- 2023-03-16 CN CN202320581240.XU patent/CN219574788U/en active Active
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