Display module with double-layer diaphragm matched for display and household appliance display panel

Abstract

The utility model discloses a display module and a household appliance display panel with double-layer diaphragms matched for display, and belongs to the technical field of display panels, the display module comprises a first diaphragm and a second diaphragm, the first diaphragm is located on the lower layer in the light source projection direction, the second diaphragm is located on the upper layer in the light source projection direction, and after the first diaphragm and the second diaphragm are matched with a light source, the first diaphragm and the second diaphragm are matched. The display module only displays the background image-text and the function key image-text. According to the utility model, the two diaphragms, the two groups of light guide plates and the double-layer diaphragm are matched to realize the display of images and texts, the upper light guide plate and the diaphragm realize the slight brightness and constant brightness of background light, and the lower light guide plate realizes the highlight of the images and texts corresponding to the area when the touch key area is operated, so that the operation of a user is more convenient. The background light sources and the touch key light sources on the upper layer and the lower layer are independently controlled, and the light guide plate is arranged in a double-layer mode, so that background images and texts and function key images and texts do not affect each other, and display of the background images and texts and the function key images and texts is attractive and striking.

Description

Technical Field

[0001] The utility model belongs to the technical field of display panels, and particularly relates to a display module with double-layer film sheets for cooperative display and a household appliance display panel. Background Art

[0002] At present, the domestic household appliance market is updated relatively fast, and the average new product launch cycle of household appliances is about 8 months. In the rapid iteration process of products, upstream manufacturers and users continuously put forward improvement and new requirements for the display effect and functions of display screens. An earlier application of the applicant with the application number 2024202872121 and the patent name "A Double-Layer Light-Emitting Ultra-Thin Display Module" discloses a double-layer light-emitting ultra-thin display module, including a background light source and a display light source. The background light source cooperates with a background light guide plate to light up the background light guide plate located in the upper layer, and the display light source cooperates with a display light guide plate to light up the display light guide plate located in the lower layer. The utility model uses a double-layer light guide plate to achieve a slightly bright and always-on background light. The background light source can make the background light of the entire display module always on, and the display unit is highly bright under a certain function, which is more convenient for users to operate. The color film sheet can adopt a pattern and background with a sense of design. Under the irradiation of the background light source, the background of the color film sheet presents a very eye-catching and design-sense effect. The entire structure is realized by a foam layer and a light guide plate, without the need for a thick bracket and a lamp cavity, and an independently arranged digital tube circuit is adopted. The combination of the above features greatly reduces the thickness of the entire module.

[0003] However, after being delivered to upstream manufacturers and consumers for use, during the use process, the display method of this product cannot meet higher effects and requirements. The main problem lies in that when touching a certain button to light up the display light source in the area of this button, the entire square touch display area will be on the background film sheet. The effect is that in addition to the small icons of the text and graphics, the square touch display area will correspondingly be displayed on the topmost film sheet, and the large-area high brightness or flashing of the entire square area destroys the continuity of the display of the entire background pattern, and the display effect and aesthetics are affected. Summary of the Utility Model

[0004] The technical problem solved by the utility model: Provide a display module with double-layer film sheets for cooperative display, which uses the cooperation of double-layer film sheets to achieve a constantly-on background with low brightness, and when touching and operating, only the graphic part of the function button is highly bright or flashing.

[0005] Technical Solution: To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] A display module with a double-layer diaphragm for cooperative display, comprising a first diaphragm and a second diaphragm. The first diaphragm is located in the lower layer in the light projection direction of the light source, and the second diaphragm is located in the upper layer in the light projection direction of the light source. After the first diaphragm and the second diaphragm cooperate with the light source, the display module only displays background graphics and function button graphics.

[0007] Further, the light source includes a background light source and a touch button light source, and the horizontal height of the background light source is higher than the horizontal height of the touch button light source.

[0008] Further, the light source is arranged on a PCB board, and a first light guide plate, a first diaphragm, a second light guide plate and a second diaphragm are sequentially arranged from bottom to top above the PCB board.

[0009] Further, the first light guide plate, the touch button light source cooperate with the first diaphragm, and the first diaphragm blocks the light of the touch button light source in the area other than the position of the function button graphics from projecting upward.

[0010] Further, the second light guide plate, the background light source cooperate with the second diaphragm, and the second diaphragm displays background graphics under the light of the background light source and displays function button graphics under the projection of the touch button light source.

[0011] Further, the second diaphragm is a color film, and a background graphic area and a function button graphic area are provided.

[0012] Further, an opaque layer for blocking the light of the touch button light source and a light-transmitting part for transmitting the light of the touch button light source are arranged on the first diaphragm, and the position of the light-transmitting part corresponds to the function button graphics on the second diaphragm.

[0013] Further, the first diaphragm is provided with a first light-transmitting slot hole whose position corresponds to the background light source, or the position on the first diaphragm corresponding to the background light source is a transparent layer.

[0014] Further, light-blocking foam is arranged on the outer peripheries of the first light guide plate and the second light guide plate.

[0015] An appliance display panel adopts the above display module with a double-layer diaphragm for cooperative display.

[0016] Beneficial effects: Compared with the prior art, the present utility model has the following advantages:

[0017] The display module and home appliance display panel with double diaphragm cooperation display mainly realize the display of graphics and texts through the cooperation of two diaphragms, two groups of light guide plates and double diaphragms. The upper light guide plate and diaphragm realize the dim and constant background light, and when operating the touch button area on the lower light guide plate, the graphic texts of the corresponding function buttons in this area are highlighted, which is more convenient for users to operate. Moreover, the background light source and touch control button light source of the upper and lower layers are independently controlled, and the light guide plates are arranged in a double layer, so that the background graphics and function button graphics do not affect each other, and the display of the background graphics and function button graphics is beautiful and eye-catching. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an exploded view of the display module with double diaphragm cooperation display;

[0019] Figure 2 is a schematic structural diagram of the first diaphragm of the display module with double diaphragm cooperation display;

[0020] Figure 3 is the optical path diagram of the background light source of the display module with double diaphragm cooperation display;

[0021] Figure 4 is the optical path diagram of the touch control button light source of the display module with double diaphragm cooperation display. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further clarifies the present invention in conjunction with specific embodiments. The embodiments are implemented on the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0023] Embodiment 1

[0024] As Figure 1 shown, the display module with double diaphragm cooperation display of the present invention includes, from bottom to top, a PCB board 1, a lower layer light-shielding foam 2, a first light guide plate 3, a first diaphragm 4, an upper layer light-shielding foam 5, a second light guide plate 6 and a second diaphragm 7. The first light guide plate 3 is arranged in the through hole in the lower layer light-shielding foam 2 and is limited and fixed by the lower layer light-shielding foam 2. The second light guide plate 6 is arranged in the through hole in the upper layer light-shielding foam 5, presenting a form in which the upper layer light-shielding foam 5 surrounds the outer circle of the second light guide plate 6. The lower surface of the lower layer light-shielding foam 2 is adhesively fixed to the PCB board 1, and the upper surface is adhesively fixed to the first diaphragm 4; the lower surface of the upper layer light-shielding foam 5 is adhesively fixed to the first diaphragm 4, and the upper surface is adhesively fixed to the second diaphragm 7.

[0025] The first diaphragm 4 is located in the lower layer in the light source projection direction, and the second diaphragm 7 is located in the upper layer in the light source projection direction. After the first diaphragm 4 and the second diaphragm 7 cooperate with the light source, the display module only displays the background graphics and function button graphics. The present invention mainly realizes the display of graphics and texts through the cooperation of two diaphragms and two groups of light guide plates.

[0026] As shown Figure 1 in the figure, the light sources are all arranged on the PCB board 1 and controlled by the main control circuit. The light sources in this embodiment include a background light source 11 and a touch button light source 12. Both the background light source 11 and the touch button light source 12 adopt LED light sources, and both use side-emitting LED light sources.

[0027] The background light sources 11 are symmetrically arranged on both sides of the PCB board 1, and the background light sources 11 on each side are evenly arranged. In order not to be blocked by other components and patterns during the display of the background light, the horizontal height of the background light source 11 is higher than the horizontal height of the touch button light source 12. In this embodiment, the height of the background light source 11 is 2 mm, and the height of the display light source 12 is 1 mm, that is, the background light source 11 is set at a raised height. The background light sources 11 are located on both sides of the second light guide plate 6. After the light of the background light sources 11 is evenly distributed by the second light guide plate 6, it is projected in the direction of the second diaphragm 7. After the light of the background light sources 11 passes through the second diaphragm 7, background graphics can be presented on the second diaphragm 7. In order to distinguish the display of the background graphics and the function button graphics, the brightness of the background light source 11 is controlled to be lower than the brightness of the touch button light source 12.

[0028] The touch button light sources 12 are arranged inside the background light sources 11. The touch button light sources 12 are only located on both sides of the touch control button area. The touch button light sources 12 in each touch control button area are set and controlled separately. When operating a certain touch control button area, the touch button light source 12 in that touch control button area is brightly lit or brightly lit and half-brightly flashed. The first light guide plate 3 is arranged inside the touch button light sources 12, and the outer periphery of the first light guide plate 3 and the touch button light sources 12 is the lower layer light-shielding foam 2, preventing the light of the touch button light source 12 in a certain touch control button area from leaking to other areas when it is lit or flashed. The first light guide plate 3, the touch button light sources 12 and the lower layer light-shielding foam 2 are at the same horizontal height, and the first diaphragm 4 is above the three. In this embodiment, the lower layer light-shielding foam 2 and the first light guide plate 3 with a thickness of 1 mm are adopted. The light shielding uses black foam, which is used to block the light sources of other display units, so that each display unit can be independently displayed and can also play a supporting role. When a certain touch button light source 12 is lit or flashed, the light first passes through the first light guide plate 3 evenly and then projects upward through the light-transmitting area of the first diaphragm 4.

[0029] The second diaphragm 7 is a color film and is located at the topmost layer of the entire device. A background graphic area 71 and a function button graphic area 72 are set. The background graphic area 71 sets background patterns according to the design requirements of the user, such as a colorful background like a starry sky background. The function button graphic area 72 sets patterns and texts according to the needs of the functions to be realized and controlled by the household appliance. For example, in this embodiment, the graphics of different colors and shapes applied to the washing machine: single dehydration, barrel self-cleaning, etc.

[0030] The first diaphragm 4 is located on the upper layer of three components, namely the first light guide plate 3, the touch button light source 12, and the lower layer light-shielding foam 2, and its lower surface is bonded to the lower layer light-shielding foam 2. The main function of the first diaphragm 4 is to allow the light of the touch button light source 12 to pass only through the functional button graphic part and block all other parts. Therefore, an opaque layer 41 for blocking the light of the touch button light source 12 and a light-transmitting part 42 for passing the light of the touch button light source 12 are provided on the first diaphragm 4, and the position of the light-transmitting part 42 corresponds to the functional button graphics on the second diaphragm 7. The opaque layer 41 can be formed on the back of the diaphragm by printing with opaque ink, or an opaque film can be bonded to the light-transmitting diaphragm. The ink printing method is preferred as it has a simple process and low cost. The shape and pattern of the light-transmitting part 42 correspond to the shape, pattern, and position of the text in the background graphic area 71 on the second diaphragm 7.

[0031] In addition, since the background light source 11 is at the bottom layer, and the second diaphragm 7 for displaying graphics is at the top layer, with the lower layer light-shielding foam 2 and the second diaphragm 7 in between, in order to allow the light of the background light source to reach the second diaphragm 7 unobstructed, the first diaphragm 4 is provided with a first light-transmitting slot hole 43 whose position corresponds to the position of the background light source 11, or the position on the first diaphragm 4 corresponding to the background light source 11 is a transparent layer without printing light-shielding ink. At the same time, a second light-transmitting slot hole 21 corresponding to the position of the background light source 11 is also provided on the lower layer light-shielding foam 2.

[0032] The working principle of the display module with the double-layer diaphragm for display of the present utility model:

[0033] As Figure 3 shown, the projection path of the light of the background light source 11 is shown. During operation, when the home appliance is powered on or the power module is turned on, the main control circuit controls the background light source 11 to light up. The light of the side-emitting background light source 11 first passes through the second light guide plate 6 for light homogenization and then projects towards the second diaphragm 7. After the light of the background light source 11 passes through the second diaphragm 7, the background graphics can be presented on the second diaphragm 7. The background light source 11 can be semi-bright with a brightness lower than that of the touch button light source 12. It can also be instantaneously high-brightness when powered on and then tend to be semi-bright. In the working state of the home appliance, the background light source 11 is usually constantly on, or it can be set to be constantly on or lit under certain functions. In this embodiment, through the cooperation of the second light guide plate 6, the background light source 11 and the second diaphragm 7, the second diaphragm 7 displays the background graphics under the light of the background light source 11 and displays the functional button graphics under the projection of the touch button light source 12.

[0034] As Figure 4As shown, the projection path of the light of the touch button light source 12 is shown. When the user touches a certain touch control button area, the touch button light source 12 of this touch control button area is lit or flashes alternately with high and low brightness. The light of the touch button light source 12 first passes through the first light guide plate 3 evenly, then projects upward through the light-transmitting area (function button graphic area) of the first film 4, then passes through the second light guide plate 6 upward, and finally is displayed through the function button graphics on the second film 7.

[0035] The utility model realizes the simultaneous display of background graphics through the cooperation of the first light guide plate 3, the touch button light source 12, the first film 4, the second light guide plate 6, the background light source 11, and the second film 7. When touching a certain touch control button area, the function button graphics of this touch control button area are highlighted or flash alternately with high and low brightness.

[0036] Embodiment 2

[0037] A household appliance display panel adopts the display module with the above-mentioned double-layer film cooperation for display. The outer layer of the second film 7 is the glass or acrylic cover plate of the household appliance, and the entire display module with the double-layer film cooperation for display is closely arranged against the cover plate. The utility model is applicable to various household appliances such as washing machines, dishwashers, refrigerators, range hoods, ovens, water purifiers, water dispensers, water heaters, etc.

[0038] The above is only the preferred embodiment of the utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. A display module with a double-layer diaphragm for display, characterized in that: It includes a first diaphragm (4) and a second diaphragm (7). The first diaphragm (4) is located in the lower layer in the light projection direction of the light source, and the second diaphragm (7) is located in the upper layer in the light projection direction of the light source. After the first diaphragm (4) and the second diaphragm (7) cooperate with the light source, the display module only displays the background graphic and the function key graphic.

2. The display module with double diaphragm cooperation display according to claim 1, characterized in that: The light source includes a background light source (11) and a touch key light source (12). The horizontal height of the background light source (11) is higher than that of the touch key light source (12).

3. The display module with double diaphragm cooperation display according to claim 1 or 2, characterized in that: The light source is arranged on the PCB board (1). A first light guide plate (3), a first diaphragm (4), a second light guide plate (6) and a second diaphragm (7) are sequentially arranged from bottom to top above the PCB board (1).

4. The display module with double diaphragm cooperation display according to claim 3, characterized in that: The first light guide plate (3), the touch key light source (12) cooperate with the first diaphragm (4). The first diaphragm (4) blocks the light of the touch key light source (12) in the area other than the position of the function key graphic from projecting upward.

5. The display module with double diaphragm cooperation display according to claim 4, characterized in that: The second light guide plate (6), the background light source (11) cooperate with the second diaphragm (7). The second diaphragm (7) displays the background graphic under the light of the background light source (11) and displays the function key graphic under the projection of the touch key light source (12).

6. The display module with double diaphragm cooperation display according to claim 1, wherein: The second diaphragm (7) is a color film, and a background graphic area (71) and a function key graphic area (72) are provided.

7. The display module with double diaphragm cooperation display according to claim 1, characterized in that: An opaque layer (41) that blocks the light of the touch key light source (12) and a light-transmitting part (42) that transmits the light of the touch key light source (12) are provided on the first diaphragm (4). The position of the light-transmitting part (42) corresponds to the function key graphic on the second diaphragm (7).

8. The display module with double diaphragm cooperation display according to claim 1, characterized in that: The first diaphragm (4) is provided with a first light-transmitting slot hole (43) whose position corresponds to the background light source (11), or the position on the first diaphragm (4) corresponding to the background light source (11) is a transparent layer.

9. The display module with a double diaphragm for cooperative display according to claim 3, characterized in that: Light-blocking foam is provided on the outer periphery of both the first light guide plate (3) and the second light guide plate (6).

10. An appliance display panel, characterized in that: A display module using the double-layer diaphragm cooperation display according to any one of claims 1-9.

Images