A lamp bead structure with infrared touch control, a display and electronic devices

Abstract

This utility model discloses a lamp bead structure, a display, and an electronic device with infrared touch control function. The lamp bead structure includes: a frame; a cup-shaped support structure located within the frame; the cup-shaped support structure includes a first region and a second region; a first pad and a blue light chip, the first pad being disposed on the frame, and the blue light chip being disposed in the first region and connected to the first pad; a second pad and an infrared chip, the second pad being disposed on the frame, and the infrared chip being disposed in the second region and connected to both the cup-shaped support structure and the second pad. This utility model achieves infrared touch control function by integrating an infrared chip inside the lamp bead, and it reduces the wiring of independent infrared chips, thereby reducing the design complexity of the display screen.

Description

Technical Field

[0001] This utility model relates to the field of backlight technology, and in particular to a lamp bead structure, display and electronic device with infrared touch function. Background Technology

[0002] Infrared touch is a non-contact touch technology based on infrared sensing. It detects the touch position through a grid of infrared emitting and receiving elements. It is widely used in large-screen displays, educational whiteboards, industrial control, and other fields, offering advantages such as high durability, strong anti-interference capabilities, and low cost. An infrared touch module consists of infrared emitting diodes, infrared receiving diodes (photoelectric sensors), and control circuitry.

[0003] When infrared touch is used in a display screen, the infrared emitter is typically positioned at the edge of the screen to emit infrared light, while the infrared receiver is positioned on the other side to receive it. The control circuit receives signal changes to determine the coordinates of the touch point, thereby controlling the brightness of the corresponding LED. However, this requires a separate trace for the infrared emitter, increasing the design complexity of the display screen.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a lamp bead structure, display and electronic device with infrared touch function, so as to solve the problem that the use of infrared touch technology to adjust the brightness of lamp beads in existing display screens makes the display screen design more complex.

[0006] The technical solution of this utility model is as follows:

[0007] In a first aspect, this utility model provides a lamp bead structure with infrared touch control function, which includes:

[0008] frame;

[0009] A bowl-shaped support structure is located within the frame; the bowl-shaped support structure includes a first region and a second region.

[0010] The first pad is disposed on the frame, and the blue light chip is disposed in the first area and connected to the first pad.

[0011] The second pad is disposed on the frame, and the infrared chip is disposed in the second area and connected to the cup-shaped support structure and the second pad respectively.

[0012] In a further embodiment of this invention, the area of ​​the first region is larger than the area of ​​the second region;

[0013] The first region and the second region are either integrated or separated.

[0014] In a further embodiment of this invention, the number of blue light chips is 1-3.

[0015] In a further embodiment of this invention, an insulating adhesive layer is provided between the blue light chip and the cup-shaped support structure.

[0016] In a further embodiment of this invention, the first pad includes a positive pad and a negative pad for the blue light chip, and the blue light chip is connected to the positive pad and the negative pad via gold wires.

[0017] A further feature of this invention is that a conductive adhesive layer is provided between the infrared chip and the cup-shaped support structure.

[0018] In a further embodiment of this invention, the second pad includes an infrared chip positive pad and an infrared chip negative pad, and the infrared chip is connected to the infrared chip positive pad and the infrared chip negative pad via gold wires.

[0019] In a further embodiment of this invention, a yellow fluorescent adhesive layer is provided on the bowl-shaped support, and the yellow fluorescent adhesive layer covers the blue light chip and the infrared chip.

[0020] Secondly, this utility model also provides a display, including a display body, a control circuit, an infrared receiving chip, and an LED structure with infrared touch function as described above; the infrared receiving chip is disposed on the display body and is used to receive infrared light from the infrared chip; the control circuit is connected to the infrared receiving chip and is used to analyze changes in the received signal to determine the coordinates of the touch point.

[0021] Thirdly, the present invention also provides an electronic device, which includes the display described above.

[0022] This invention provides a lamp bead structure, display, and electronic device with infrared touch functionality. The lamp bead structure includes: a frame; a cup-shaped support structure located within the frame; the cup-shaped support structure includes a first region and a second region; a first pad and a blue light chip, the first pad being disposed on the frame, and the blue light chip being disposed within the first region and connected to the first pad; a second pad and an infrared chip, the second pad being disposed on the frame, and the infrared chip being disposed within the second region and connected to both the cup-shaped support structure and the second pad. This invention achieves infrared touch functionality by integrating an infrared chip inside the lamp bead, and reduces the wiring of independent infrared chips, thereby lowering the design complexity of the display screen. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the frame, cup-shaped support structure, and solder pads of the lamp bead structure in this utility model.

[0025] Figure 2 This is a schematic diagram showing the distribution of the blue light chip and the red light chip on the bowl-shaped support structure in this utility model.

[0026] Figure 3 This is a schematic diagram of the structure of the blue light chip, red light chip and cup-shaped support structure using gold wire bonding in this utility model.

[0027] Figure 4 This is a schematic diagram of the structure of the LED bead in this utility model after it is encapsulated with yellow fluorescent glue.

[0028] Figure 5 This is a schematic diagram of the display structure in this utility model.

[0029] The markings in the attached diagram are as follows: 100, LED structure for infrared touch function; 110, frame; 120, cup-shaped bracket structure; 121, first area; 122, second area; 130, positive pad of blue LED chip; 140, negative pad of blue LED chip; 150, blue LED chip; 160, positive pad of infrared chip; 170, negative pad of infrared chip; 180, infrared chip; 190, yellow fluorescent adhesive layer; 200, gold wire; 300, display body; 310, infrared receiver chip; 320, control circuit. Detailed Implementation

[0030] This utility model provides a lamp bead structure, a display, and an electronic device with infrared touch control function. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following detailed description is provided with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit its scope.

[0031] In the implementation methods and claims, unless otherwise specified in the text, the terms "a," "an," "the," and "the" may also include plural forms. If the embodiments of this utility model involve descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0032] It should be further understood that the term "comprising" as used in this specification means the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It should be understood that when an element is referred to as "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or there may be intermediate elements present. Furthermore, "connected" or "coupled" as used herein can include wireless connections or wireless coupling. The term "and / or" as used herein includes all or any of the units and all combinations thereof of one or more associatedly listed items.

[0033] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have the same meaning as in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined as herein.

[0034] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0035] Please also refer to Figures 1 to 4 This utility model provides a preferred embodiment of an LED bead structure with infrared touch control function.

[0036] In some embodiments, such as Figure 1 and Figure 2 As shown, this utility model provides a lamp bead structure 100 with infrared touch function, which includes: a frame 110, a cup-shaped bracket structure 120, a first pad, a blue light chip 150, a second pad, and an infrared chip 180. The cup-shaped bracket structure 120 is located within the frame 110; the cup-shaped bracket structure 120 includes a first region 121 and a second region 122; the first pad is disposed on the frame 110, the blue light chip 150 is disposed within the first region 121 and connected to the first pad; the second pad is disposed on the frame 110, and the infrared chip 180 is disposed within the second region 122 and connected to both the cup-shaped bracket structure 120 and the second pad.

[0037] In this embodiment, the cup-shaped support structure 120 is divided into a first region 121 and a second region 122. A blue light chip 150 is disposed in the first region 121, and an infrared chip 180 is disposed in the second region 122. An external infrared receiving chip receives the infrared light emitted by the infrared chip 180. When a finger or object blocks part of the infrared light, the external control circuit can analyze the changes in the received signal to determine the touch point coordinates, thereby controlling the brightness of the blue light chip 150 in the corresponding LED (brightness is controlled by controlling the magnitude of the driving current). The principle of touch detection is as follows: Under normal conditions, infrared light forms a crisscrossing light grid (X / Y axis) on the screen surface. When touched, a finger or object blocks part of the infrared light, causing the signal of the receiving tube at the corresponding position to weaken. At this time, positioning calculation is performed, that is, by scanning the light path interruption points on the X / Y axis, the touch coordinates are determined by cross-intersection.

[0038] In this way, the present invention integrates the blue light chip 150 and the infrared chip 180 in the cup-shaped bracket structure 120. The first area 121 is used for the blue light chip 150 wiring, and the second area 122 is used for the infrared chip 180 wiring, which do not interfere with each other. This realizes the integration of the infrared chip 180 into the lamp bead, which can realize the infrared touch function, reduce the wiring of the independent infrared chip 180, reduce the design complexity of the display, reduce the SMT surface mount process of the infrared chip 180, and better protect the infrared chip 180.

[0039] In some embodiments, such as Figure 1 and Figure 2 As shown, the area of ​​the first region 121 is larger than the area of ​​the second region 122. The first region 121 and the second region 122 are integrally formed, or the first region 121 and the second region 122 are separately formed.

[0040] In this embodiment, the first region 121 of the cup-shaped support structure 120 is used to place the blue light chip 150, and the second region 122 of the cup-shaped support structure 120 is used to place the infrared chip 180. The area of ​​the first region 121 is larger than the area of ​​the second region 122, thus allowing for a larger area to hold the blue light chip 150. One to three blue light chips 150 can be placed according to user parameters; the more blue light chips 150 present, the higher the brightness of the LED. In this embodiment, the first region 121 and the second region 122 of the cup-shaped support structure 120 can be integrally formed or separately formed.

[0041] In some embodiments, an insulating adhesive layer is provided between the blue light chip 150 and the cup-shaped support structure 120.

[0042] In this embodiment, the blue light chip 150 is fixed in the first region 121 of the cup-shaped support structure 120 by insulating adhesive, so that the blue light chip 150 and the cup-shaped support structure 120 are in an insulated state.

[0043] In some embodiments, such as Figures 1 to 3 As shown, the first pad includes a blue light chip positive electrode pad 130 and a blue light chip negative electrode pad 140. The blue light chip 150 is connected to the blue light chip positive electrode pad 130 and the blue light chip negative electrode pad 140 through a gold wire 200.

[0044] In this embodiment, the positive electrode pad 130 and the negative electrode pad 140 of the blue light chip partially extend out of the frame 110, the positive and negative electrodes of the blue light chip 150 are located on the same side, and the blue light chip 150 is connected to the positive electrode pad 130 and the negative electrode pad 140 of the blue light chip through gold wire 200.

[0045] In some embodiments, a conductive adhesive layer is provided between the infrared chip 180 and the cup-shaped support structure 120.

[0046] In this embodiment, since the positive and negative electrodes of the infrared chip 180 are located on two different surfaces, the infrared chip 180 is connected to the cup-shaped support structure 120 via conductive adhesive. In one implementation, the conductive adhesive may be silver conductive adhesive.

[0047] Furthermore, such as Figures 1 to 3 As shown, the second pad includes an infrared chip positive pad 160 and an infrared chip negative pad 170. The infrared chip 180 is connected to the infrared chip positive pad 160 and the infrared chip negative pad 170 through a gold wire 200.

[0048] In this embodiment, the positive electrode pad 160 and the negative electrode pad 170 of the infrared chip partially extend out of the frame 110. After electrically connecting the infrared chip 180 to the cup-shaped support structure 120, the infrared chip 180 is further connected to the infrared chip positive electrode pad 160 and the infrared chip negative electrode pad 170 together via gold wire 200, thus integrating the infrared chip 180 into the LED bead. The circuitry is integrated through PCB traces to reduce the need for separate traces for the infrared chip 180. In this way, the blue light chip 150 and the infrared chip 180 are traced in the first region 121 and the second region 122 of the cup-shaped support structure 120, respectively, without interfering with each other.

[0049] In some embodiments, such as Figure 4 As shown, a yellow fluorescent adhesive layer 190 is provided on the bowl-shaped support structure 120, and the yellow fluorescent adhesive layer 190 covers the blue light chip 150 and the infrared chip 180.

[0050] In this embodiment, after the blue LED chip 150 and the infrared chip 180 are electrically connected, a yellow fluorescent adhesive layer 190 is formed by applying a mixture of yellow phosphor and glue above the cup-shaped support structure 120 to encapsulate the blue LED chip 150 and the infrared chip 180. After the blue LED chip 150 and the infrared chip 180 are encapsulated, a white LED chip can be obtained through the blue LED chip 150 and the yellow fluorescent adhesive layer 190.

[0051] In some embodiments, in order to reduce the possibility of the infrared chip 180 exciting yellow phosphor, the infrared chip 180 is a vertical infrared chip with a wavelength of 800-900 nm.

[0052] In some embodiments, such as Figure 5 As shown, this utility model also provides a display, including a display body 300, a control circuit 320, an infrared receiving chip 310, and an LED structure 100 with infrared touch function as described above; the infrared receiving chip 310 is disposed on the display body 300, and the infrared receiving chip 310 is used to receive infrared light from the infrared chip 180; the control circuit 320 is connected to the infrared receiving chip 310, and the control circuit 320 is used to analyze the changes in the received signal to determine the coordinates of the touch point.

[0053] In this embodiment, the infrared receiving chip 310 and the control circuit 320 are both integrated on the display body 300. The LED can realize the function of the infrared chip 180. The control circuit 320 is connected to the infrared receiving chip 310 and can analyze the changes in the received signal to determine the coordinates of the touch point, so that the driving current of the blue light chip 150 inside the LED can be adjusted, thereby realizing the adjustment of the brightness of the LED.

[0054] In some embodiments, the present invention also provides an electronic device including the display described above. Specific examples of a display embodiment are described herein and will not be repeated here.

[0055] In summary, the LED structure, display, and electronic device with infrared touch function provided by this utility model have the following beneficial effects:

[0056] By integrating an infrared chip inside the LED, infrared touch functionality can be achieved, and the wiring of a separate infrared chip can be reduced, thus lowering the design complexity of the display screen.

[0057] It should be understood that the application of this utility model is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A lamp bead structure with infrared touch function, characterized in that, include: frame; A bowl-shaped support structure is located within the frame; the bowl-shaped support structure includes a first region and a second region. The first pad is disposed on the frame, and the blue light chip is disposed in the first area and connected to the first pad. The second pad is disposed on the frame, and the infrared chip is disposed in the second area and connected to the cup-shaped support structure and the second pad respectively. 2.The lamp bead structure with infrared touch function according to claim 1, characterized in that, The area of ​​the first region is larger than the area of ​​the second region; The first region and the second region are either integrated or separated. 3.The lamp bead structure with infrared touch function according to claim 1, characterized in that, The number of blue light chips is 1-3. 4.The lamp bead structure with infrared touch function according to claim 1, characterized in that, An insulating adhesive layer is provided between the blue light chip and the cup-shaped support structure. 5.The lamp bead structure with infrared touch function according to claim 4, characterized in that, The first pad includes a positive pad and a negative pad for the blue light chip, and the blue light chip is connected to the positive pad and the negative pad via gold wires. 6.The lamp bead structure with infrared touch function according to claim 1, characterized in that, A conductive adhesive layer is provided between the infrared chip and the cup-shaped support structure. 7.The lamp bead structure with infrared touch function according to claim 6, characterized in that, The second pad includes a positive pad and a negative pad for the infrared chip. The infrared chip is connected to the positive pad and the negative pad via gold wires. 8.The lamp bead structure with infrared touch function according to claim 6, characterized in that, A yellow fluorescent adhesive layer is provided on the bowl-shaped support structure, and the yellow fluorescent adhesive layer covers the blue light chip and the infrared chip.

9. A display comprising a display body, characterised in that It also includes a control circuit, an infrared receiving chip, and a lamp bead structure with infrared touch function as described in any one of claims 1-8; the infrared receiving chip is disposed on the display body, and the infrared receiving chip is used to receive the infrared light from the infrared chip; The control circuit is connected to the infrared receiving chip, and the control circuit is used to analyze the changes in the received signal to determine the coordinates of the touch point.

10. An electronic device, comprising: Includes the display as described in claim 9.

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