LED intelligent display module capable of independently displaying overlapped patterns

Abstract

The invention provides an LED intelligent display module capable of independently displaying overlapped patterns, which comprises a bracket and a PCB (Printed Circuit Board) fixed at the bottom of the bracket, a plurality of groups of first light sources are arranged on the PCB, a display window is arranged on the bracket, a first light guide plate is arranged in the display window, and the LED intelligent display module further comprises a first display membrane arranged above the first light guide plate, a first display pattern is arranged on the first display diaphragm; the display lamp panel, the second light guide plate and the second display membrane are arranged above the first display membrane, a plurality of second light sources are arranged on the display lamp panel, and a second display pattern is arranged on the second display membrane; the PCB can drive the first light source and the second light source to emit light, the first light source and the second light source both emit light laterally, and light rays are emitted into the corresponding light guide plates from the side faces. Single or overlapped UI patterns are displayed in the window display area through the LEDs, and the cost is greatly reduced under the condition that the display effect is met.

Description

Technical Field

[0001] The invention relates to the field of display module structures, and in particular to an LED intelligent display module capable of independently displaying overlapping patterns. Background Art

[0002] Existing conventional LED smart display modules can only display one color UI pattern in the same window display area. If you want to display multiple patterns in the same display window, you need to use higher-level display technologies such as LCD liquid crystal displays. However, the cost of LCD is much higher than that of LED display modules, which will greatly increase the cost of the product.

[0003] Moreover, the current LED display module uses a touch color film to realize the interactive function when taking into account the human-computer interactive touch function, which is costly and the circuit will affect the display effect. Summary of the invention

[0004] In order to solve the problems in the prior art, the present invention provides an LED intelligent display module that can independently display overlapping patterns.

[0005] The LED intelligent display module capable of independently displaying overlapping patterns of the present invention comprises a bracket, a PCB board fixed to the bottom of the bracket, the PCB board is provided with a plurality of groups of first light sources, the bracket is provided with a plurality of display windows corresponding to the first light sources one by one, a first light guide plate is provided in the display window, the first light source is arranged on one side of the first light guide plate and is arranged toward the first light guide plate, the LED intelligent display module further comprises a first display film arranged above the first light guide plate, and the first display film is provided with a first display pattern; The LED intelligent display module also includes a display light board, a second light guide plate and a second display film arranged above the first display film, the display light board is arranged on the side of the second light guide plate and is electrically connected to the PCB board, a plurality of second light sources are arranged on the display light board, the second light sources are arranged toward the second light guide plate, a light source isolation layer connected to the second light guide plate is arranged on the upper surface of the display light board, and a second display pattern is arranged on the second display film; The PCB board can drive the first light source and / or the second light source to emit light. When the first light source emits light, the LED smart display module can display the pattern on the first display film. When the second light source emits light, the LED smart display module can display the pattern on the second display film. When the first light source and the second light source emit light at the same time, the pattern on the first display film and the pattern on the second display film can be displayed overlappingly.

[0006] Furthermore, a touch layer for human-computer interaction is provided on the PCB board.

[0007] Furthermore, the touch layer is a copper-clad layer covering the PCB board, the single-chip microcomputer on the PCB board is electrically connected to the copper-clad layer, and the interactive function is realized by detecting the change of the capacitance value of the touch.

[0008] Furthermore, the display light board is a flexible PCB board, which is connected to the PCB board at the bottom through gold fingers led out from the flexible PCB board.

[0009] Furthermore, the first display film includes a substrate, an ink layer arranged on the upper surface of the substrate, the ink layer is provided with a light-transmitting area corresponding to the first display pattern, the light-transmitting area is provided with a light-transmitting diffused white ink layer, and the first display film also includes a protective film arranged on the upper surface and an adhesive layer arranged on the lower surface.

[0010] Furthermore, the second display film includes a substrate, a second ink layer with a certain transmittance arranged on the upper surface of the substrate, the second ink layer is provided with a light-transmitting area corresponding to the second display pattern, the light-transmitting area is provided with a light-transmitting diffused white ink layer, and the second display film also includes a protective film arranged on the upper surface and an adhesive layer arranged on the lower surface.

[0011] Furthermore, the height of the LED intelligent display module is 2.0 mm, and the thickness of the first light guide plate and the second light guide plate are both 0.8 mm.

[0012] Compared with the prior art, the present invention has the following beneficial effects: the present invention uses LED to display a single or overlapping UI pattern in the same window display area through structural optimization and improvement, thereby solving the defect that the LED display module can only display a single UI in a single window. The present invention greatly reduces the cost while meeting the LCD display effect. By arranging the first light source on the side of the first light guide plate and the second light source on the side of the second light guide plate, the number of LEDs in a single window can be reduced. In addition, the requirements for the structural height of the positive-light-emitting LED display can be avoided, so that each structure can be effectively fitted and arranged, thereby effectively reducing the thickness of the display module, so that the present invention can realize the touch function through PCB copper cladding. Compared with a dedicated touch film, there is no need to set up additional circuits, thereby avoiding the influence of the circuits on the display effect and achieving a cost reduction of 200%. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the present invention or the solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the display module structure of the present invention; Figure 2 for Figure 1 Partial magnification; Figure 3 It is a schematic diagram of the decomposition structure of the present invention; Figure 4 and Figure 5 This is a schematic diagram of the coordination structure of some components of the present invention; Figure 6 It is a schematic diagram of a pattern of a first display film according to an embodiment of the present invention; Figure 7 is a schematic diagram of a pattern of a second display film according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the PCB board structure. DETAILED DESCRIPTION

[0015] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0016] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it mutually exclusive, independent, or alternative to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention may be combined with other embodiments.

[0017] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0018] like Figure 1-Figure 8 As shown, the LED intelligent display module of the present invention that can independently display overlapping patterns includes a bracket 7 and a PCB board 6 fixed to the bottom of the bracket 7. In this example, a mounting groove is provided on the back of the bracket 7, and screw holes 62 are provided at corresponding positions of the PCB board 6 and the bracket 7. The PCB board 6 is fixed in the mounting groove on the back of the bracket 7 by screws.

[0019] In this example, eight mutually isolated display windows are arranged on the bracket 7, and correspondingly, eight groups of first light sources 61 are arranged on the PCB board 6. After the PCB board 6 is assembled, the first light source 61 can penetrate into the display window, and the first light source 61 is arranged close to the side of the display window 71, and a first light guide plate 5 is arranged in each display window, which is used to inject the light of the first light source 61 into the first light guide plate 5 from the side by means of side light emission. Compared with setting the first light source 61 below the first light guide plate 5, the present invention can effectively reduce the number of LEDs, and correspondingly reduce the solution cost of the entire display module driving circuit. In addition, if the first light source 61 is arranged below the first light guide plate 5, a height gap of the LED is reserved between the PCB board 6 and the first light guide plate 5. If the height of the light-emitting area window is not enough, a light spot of a point light source will appear on the display, affecting the display effect. The present invention can make the first light guide plate 5 fit the PCB board, effectively reduce the thickness of the product, and no light spot will be formed, so that the light is more uniform and the display effect is better.

[0020] The LED intelligent display module of this example further includes a first display film 4 arranged above the first light guide plate 5 , on which a first display pattern is arranged. By lighting the first light source, the pattern on the first display film 4 can be displayed.

[0021] This example also includes a display light board 3, a second light guide plate 2, and a second display film 1 arranged above the first display film 4. The display light board 3 is arranged on the side of the second light guide plate 2, coplanar with the first light guide plate 2, and electrically connected to the PCB board 6 through a connecting line 32 to realize the functions of lighting the light board, switching display colors, modes, etc. The display light board 3 is provided with a plurality of second light sources 31, and the second light sources 31 are arranged toward the second light guide plate 2. The upper surface of the display light board is provided with a light source isolation layer connected to the second light guide plate 2 to prevent light leakage, and the second display film 1 is provided with a second display pattern. Preferably, the second light guide plate 2, the second display film 1, the first display film 4, and the first light guide plate 5 of this example are all arranged in close contact, which greatly reduces the height of the product.

[0022] In this example, the PCB board 6 can drive the first light source 61 and the second light source 31 to emit light. When the first light source is driven to emit light alone, the LED intelligent display module can display the pattern on the first display film 4. When the second light source 31 is driven to emit light, the LED intelligent display module can display the pattern on the second display film 1. When the first light source and the second light source are driven to emit light at the same time, the pattern on the first display film 4 and the pattern on the second display film 1 can be displayed overlappingly.

[0023] The present invention uses structural optimization and improvement to display a single or overlapping UI pattern in the same window display area using LED, thereby solving the defect that the LED display module can only display a single UI in a single window. The present invention greatly reduces the cost while meeting the LCD display effect.

[0024] During use, the pattern on the first display film 4 of this example can be a function menu item, and the pattern on the second display film 1 can be a power-on or power-off pattern, or an atmosphere pattern, etc., so as to achieve a variety of display effects.

[0025] In order to facilitate operation, a touch function is generally configured on the display module. If positive light emission is adopted, the structural space is high and the touch cannot be realized by PCB copper cladding, and only a touch film can be used, and the cost is more than 3 times that of an ordinary film. The present invention can solve the problem of the cost of realizing the touch function in human-computer interaction through structural optimization. The touch layer of human-computer interaction of the present invention is realized by copper cladding on PCB. The single-chip microcomputer on the PCB board is electrically connected to the copper cladding, and the interactive function is realized by detecting the change of the capacitance value at the touch point. Compared with a special touch film, there is no need to set up additional circuits, thereby avoiding the influence of the circuits on the display effect, and the cost can be reduced by more than 200%.

[0026] Preferably, the display light board 3 of this example is a flexible PCB board, which is connected to the bottom PCB board 6 through the gold fingers led out from the flexible PCB board. Preferably, the light source isolation layer of this example adopts a bright silver dragon, and the contact area between the flexible PCB board and the second light guide plate 2 is covered by the bright silver dragon to ensure that the second light source 31 can evenly light up the entire second light guide plate 2.

[0027] like Figure 7 As shown, the first display film 4 of this example includes a substrate, an ink layer arranged on the upper surface of the substrate, the ink layer is provided with a light-transmitting area corresponding to the first display pattern, the light-transmitting area is provided with a light-transmitting diffusing white ink layer, and the first display film also includes a protective film arranged on the upper surface and an adhesive layer arranged on the lower surface. Adding light-transmitting diffusing white oil optimizes the diffusion effect of the entire film paper, so that the display is more uniform, and the adhesive layer is used to stick the first display film 4 on the upper surface of the bracket 7 and the first light guide plate 5. As one of the embodiments of the present invention, the first display pattern of this example is a function menu of a washing machine, the first line is the type of washing, and the four patterns in the second line are four different functions.

[0028] like Figure 6As shown, the second display film 1 includes a substrate, a second ink layer with a certain light transmittance arranged on the upper surface of the substrate, the second ink layer is provided with a light-transmitting area corresponding to the second display pattern, the light-transmitting area is provided with a light-transmitting diffusion white ink layer, and the second display film 1 also includes a protective film arranged on the upper surface and an adhesive layer arranged on the lower surface. Adding light-transmitting diffusion white oil optimizes the diffusion effect of the entire film paper, so that the display is more uniform, and the adhesive layer is used to stick the second display film 1 to the upper surface of the second light guide plate 2. The second display pattern in this example is a power-on and atmosphere display pattern, which can be achieved by driving the LED on the PCB board to achieve 0-255 levels of brightness adjustment to achieve a breathing effect.

[0029] By setting the first light source on the side of the first light guide plate and the second light source on the side of the second light guide plate, the number of LEDs in a single window can be reduced. In addition, the requirements for the height of the structure of the positive light-emitting LED display can be avoided, so that each structure can be effectively fitted and set, thereby effectively reducing the thickness of the display module. The height of the entire module of the present invention is 2.0 mm, and the bottom display area adopts a 1.0 REF (LED light reflection cover) structural member as a window window. The first light guide plate in the window is used to evenly light up the entire window with the side-emitting LED light source, and the first display film is pasted on the first layer to realize the first layer display UI (user interface); on top of this, a second light guide plate with a thickness of 0.8 mm and an FPC soft circuit board are added, which are also side-emitting LEDs, and the second display film of the second layer atmosphere display is pasted on it to realize the UI display effect of the second layer. The drive control of the LED all adopts the PWM algorithm, which can realize 0-255 levels of adjustable brightness and achieve a breathing effect. When the lower layer is bright and the upper layer is not bright, the content of the lower layer UI window can be clearly seen. When the two layers are bright at the same time, the overlapping UI effect can also be clearly seen. Through MCU algorithm control, various display interfaces and effects required by customers can be realized.

[0030] The specific implementation modes described above are preferred implementation modes of the present invention, and are not intended to limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to the specific implementation modes, and all equivalent changes made according to the present invention are within the protection scope of the present invention.

Claims

1. An LED intelligent display module capable of independently displaying overlapping patterns, characterized in that: The LED intelligent display module comprises a bracket, a PCB board fixed at the bottom of the bracket, the PCB board is provided with a plurality of groups of first light sources, the bracket is provided with a plurality of display windows corresponding to the first light sources one by one, a first light guide plate is provided in the display window, the first light source is arranged on one side of the first light guide plate and is arranged toward the first light guide plate, the LED intelligent display module further comprises a first display film arranged above the first light guide plate, and the first display film is provided with a first display pattern; The LED intelligent display module also includes a display light board, a second light guide plate and a second display film arranged above the first display film, the display light board is arranged on the side of the second light guide plate and is electrically connected to the PCB board, a plurality of second light sources are arranged on the display light board, the second light sources are arranged toward the second light guide plate, a light source isolation layer connected to the second light guide plate is arranged on the upper surface of the display light board, and a second display pattern is arranged on the second display film; The PCB board can drive the first light source and / or the second light source to emit light. When the first light source emits light, the LED smart display module can display the pattern on the first display film. When the second light source emits light, the LED smart display module can display the pattern on the second display film. When the first light source and the second light source emit light at the same time, the pattern on the first display film and the pattern on the second display film can be displayed overlappingly.

2. The LED intelligent display module capable of independently displaying overlapping patterns according to claim 1, characterized in that: The PCB board is provided with a touch layer for human-computer interaction.

3. The LED intelligent display module with independently displayable overlapping patterns according to claim 2, characterized in that: The touch layer is a copper-clad layer covering the PCB board, and the single-chip microcomputer on the PCB board is electrically connected to the copper-clad layer, and the interactive function is realized by detecting the change of the capacitance value of the touch.

4. The LED intelligent display module with independently displayable overlapping patterns according to claim 1, characterized in that: The display light board is a flexible PCB board, which is connected to the bottom PCB board through gold fingers led out from the flexible PCB board.

5. The LED intelligent display module capable of independently displaying overlapping patterns according to claim 1, characterized in that: The first display film includes a substrate, an ink layer arranged on the upper surface of the substrate, the ink layer is provided with a light-transmitting area corresponding to the first display pattern, the light-transmitting area is provided with a light-transmitting diffused white ink layer, and the first display film also includes a protective film arranged on the upper surface and an adhesive layer arranged on the lower surface.

6. The LED intelligent display module capable of independently displaying overlapping patterns according to claim 1, characterized in that: The second display film includes a substrate, a second ink layer with a certain transmittance arranged on the upper surface of the substrate, the second ink layer is provided with a light-transmitting area corresponding to the second display pattern, the light-transmitting area is provided with a light-transmitting diffused white ink layer, and the second display film also includes a protective film arranged on the upper surface and an adhesive layer arranged on the lower surface.

7. The LED intelligent display module capable of independently displaying overlapping patterns according to claim 1, characterized in that: The height of the LED intelligent display module is 2.0 mm, and the thickness of the first light guide plate and the second light guide plate are both 0.8 mm.

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