Double-light-source image-text projection support type display module, panel and household appliance

Abstract

The utility model discloses a double-light-source image-text projection support type display module, a panel and a household appliance. The double-light-source image-text projection support type display module comprises a background light source, a character function key light source, a character function key transparent membrane located on the lower layer and a background membrane located on the upper layer. The character function key light source sequentially passes through the character function key transparent diaphragm and the background diaphragm to project light outwards to lighten the character function key image-text, and the background light source lightens the background diaphragm. A character function key transparent diaphragm, a background light guide plate and a background diaphragm are sequentially arranged on the upper surface of the support upwards, and a light blocking supporting piece is arranged on the periphery of the background light guide plate. Through cooperation of the two diaphragms, the lamp cavity and the background light guide plate, image-text display is achieved, the background light source is slightly bright and normally bright and is matched with the background light guide plate and the background diaphragms to display background image-text, when the character function key light source operates a touch key area, character function key image-text corresponding to the area is highlighted, and user operation is more convenient.

Description

Technical Field

[0001] The utility model belongs to the field of home appliance display screen technology, and particularly relates to a dual-light source graphic projection bracket type display module, a panel and a home appliance. Background Art

[0002] The utility model patent application numbered 202420287214.0 filed by the applicant is titled "A display module with background light display", which discloses a display module with background light display, including a first PCB board, a second PCB board, a bracket and a background light guide plate. A display light source is provided on the first PCB board, and a background light source is provided on the second PCB board. The background light source illuminates the background light guide plate located above the display light source. The utility model adopts a solution combining a bracket and a light guide plate. The bracket is provided with a plurality of lamp cavities, which are divided into a plurality of display units. When the touch is on or a certain function display is required, the display light source is illuminated. A light guide plate and a foam layer are provided above the bracket, and background light sources are provided on both sides of the light guide plate to form a constantly bright background light. In order to match the structure of the bracket, the second PCB board of the background light source is separated from the first PCB board, and a long strip of the second PCB board is provided on the edge of the bracket to meet the arrangement requirements of the background light source. The structure is simple and the display effect is good.

[0003] However, during use, it was found that the display method of this product could not meet higher effects and requirements. The problems that occurred included: when a certain button was touched to light up the display light source of the case area, the entire square touch display area would be on the background film. The effect was that except for the small icons of pictures and texts, the square touch display area would be displayed accordingly on the top film. The large-scale highlighting or flickering of the entire square area destroyed the display continuity of the entire background pattern, and the display effect and aesthetics were affected. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a dual-light source graphic projection bracket display module, panel and home appliance based on a bracket structure, which can realize independent control of light emission of character function keys and background.

[0005] Technical solution: In order to solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0006] A dual-light source graphic projection bracket display module includes a background light source, a character function key light source, a character function key transparent film located at the lower layer, and a background film located at the upper layer. The character function key light source sequentially projects light outward through the character function key transparent film and the background film to illuminate the character function key graphics, and the background light source illuminates the background film.

[0007] Furthermore, the display module also includes a PCB board and a background light bar embedded in the bracket. The character function key transparent film, the background light guide plate and the background film are arranged in sequence on the upper surface of the bracket, and a light-blocking support is arranged on the periphery of the background light guide plate.

[0008] Furthermore, a plurality of lamp cavities are provided on the bracket, and the character function key light sources are located in the lamp cavities.

[0009] Furthermore, the background light source is arranged on a background light bar, and the side-emitting background light source is located on one side or both sides of the background light guide plate.

[0010] Furthermore, the background light bar is located on the side of the bracket and passes through the bracket, and the lower end of the background light bar is electrically connected to the PCB board.

[0011] Furthermore, the character function key transparent film is located between the bracket and the background light guide plate, the character function key portion of the character function key transparent film is light-transmissive, and the other portions are light-shielding.

[0012] Furthermore, the background film is a composite of a touch film and a color film, which is attached to the upper surface of the light guide plate and the light blocking support; or the touch film and the color film of the background film are separately arranged, the color film is attached to the upper surface of the light guide plate and the light blocking support, and the touch film is arranged on the inner surface of the panel.

[0013] Furthermore, it is characterized in that the brightness of the background light source is smaller than the brightness of the character function key light source.

[0014] A display panel adopts the above-mentioned dual-light source image and text projection bracket type display module.

[0015] A household appliance adopts the above-mentioned dual-light source image and text projection bracket type display module or display panel.

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

[0017] (1) The present invention mainly realizes the display of graphics and texts through the cooperation of two diaphragms, a lamp cavity and a background light guide plate. The background light source is slightly bright and always on to display the background graphics and texts in cooperation with the background light guide plate and the background diaphragm. When the character function key light source is used to operate the touch key area, the character function key graphics and texts corresponding to the area are highlighted, which is more convenient for users to operate. In addition, the background light sources and character function key light sources of the upper and lower layers are independently controlled, so that the background graphics and texts and the character function key graphics and texts do not affect each other, and the background graphics and texts and the character function key graphics and texts are displayed beautifully and eye-catchingly.

[0018] (2) The present invention sets a light guide plate and a foam layer above the bracket, and sets background light sources on both sides of the light guide plate to form a constantly bright background light. Combined with the design pattern and background on the color film, under the illumination of the background light source, the color film background presents a very eye-catching and design-oriented effect.

[0019] (3) In order to match the structure of the bracket, the utility model separates the background light strip from the PCB board. The background light strip can meet the layout requirements of the background light source, with a simple structure and good display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an exploded view of a dual-light source graphic projection stand display module;

[0021] Figure 2 This is the appearance of the dual-light source graphic projection bracket display module;

[0022] Figure 3 This is the main view of the dual-light source graphic projection bracket display module;

[0023] Figure 4 yes Figure 3 AA sectional view;

[0024] Figure 5 This is a partial structural diagram of a dual-light source graphic projection bracket display module;

[0025] Figure 6 This is a schematic diagram of the transparent film structure of the character function keys of the dual-light source graphic projection bracket display module;

[0026] Figure 7 This is the background light path diagram of the dual-light source image and text projection bracket display module;

[0027] Figure 8 This is a light path diagram of the character function key light source of a dual-light source graphic projection bracket display module. DETAILED DESCRIPTION

[0028] The present invention will be further illustrated below with reference to specific embodiments. The embodiments are implemented based on the technical solutions of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0029] Example 1

[0030] like Figure 1As shown, this embodiment provides a dual-light source graphic projection bracket-type display module, including a PCB board 1, a background light bar 2, a bracket 3, a background light guide plate 4, a character function key light source 5, a background light source 6, a light-blocking support 7, a background film 8, a character function key transparent film 9 and other components. The PCB board 1 and the background light bar 2 are embedded in the bracket 3, and the character function key transparent film 9, the background light guide plate 4 and the background film 8 are sequentially arranged on the upper surface of the bracket 3. The light-blocking support 7 made of black foam is arranged on the periphery of the background light guide plate 4. After the power is turned on, the background light source 6 is slightly bright and always on. When the character function key of the background film 8 is touched or when function display is required, the character function key light source 5 is lit, and the brightness of the character function key light source 5 exceeds the brightness of the background light source 6, so as to realize a striking display of the character function key area.

[0031] Bracket 3, an injection-molded plastic support, serves as the mounting platform for the entire display module. It features multiple through-holes forming a lamp cavity 31. Long slots 32 are also defined along the long sides of the bracket 3 to accommodate the backlight strip 2. The PCB 1 is positioned below and inside the bracket 3, and is installed from the bottom up.

[0032] The backlight strip 2 is located on the side of the bracket 3 and extends vertically through the bracket 3 through a long strip-shaped slot 32. The lower end of the backlight strip 2 is soldered to the PCB 1 via pins 21. One or more backlight strips 2 can be provided. To ensure uniform illumination, two opposing backlight strips 2 in this embodiment are located on either side of the backlight guide plate 4. Multiple backlight sources 6 are located at the upper end of the backlight strip 2. These light sources 6 emit light from the side, emitting light toward the inner backlight guide plate 8. The light is then evenly distributed through the backlight guide plate 4, illuminating the backlight diaphragm 8.

[0033] The PCB board 1 is provided with a control circuit and a character function key light source 5 for illuminating each display unit of the display module. Multiple groups of character function key light sources 5 are respectively located in each lamp cavity 31. The background light source 6 and the character function key light source 5 are both LED light sources.

[0034] Background film 8 is a composite of a touch film and a color film, attached to the upper surfaces of the background light guide plate 4 and the light-blocking support 7. Alternatively, the touch film and color film of background film 8 are separate components, with the color film attached to the upper surfaces of the light guide plate and the light-blocking support 7 and the touch film attached to the inner surface of the panel. The touch film is electrically connected to the PCB 1 via a flat cable 11.

[0035] The background film 8 also includes a background image area and a character function key area. These areas are light-transmissive, while other areas are light-shielded. The image area can be configured with a background pattern based on the user's design requirements, such as a colorful background like a starry sky. The character function keys can be configured with patterns and text based on the functions the appliance needs to perform and control. For example, in this embodiment, the washing machine displays images and text in different colors and shapes: dehydration, reservation, wash, wool, etc.

[0036] After the light from the background light source 6 passes through the background light guide plate 4, it is projected toward the background film 8. After the light from the background light source 6 passes through the background film 8, the background image and text can be presented on the background film 8 after lighting. In order to distinguish the background image and text from the display of the character function keys, the brightness of the background light source 6 is controlled to be lower than the brightness of the character function key light source 5.

[0037] The character function key transparent film 9 is located between the bracket and the background light guide plate 4. The character function key part of the character function key transparent film 9 is light-transmissive, while the other parts are light-blocking. The main function of the character function key transparent film 9 is to allow the light of the character function key light source 5 to pass only through the character function key part, and all other parts are blocked. Therefore, a light-blocking layer 91 that blocks the light of the character function key light source 5 and a light-transmitting portion 92 that transmits the light of the character function key light source 5 are provided on the character function key transparent film 9. The position of the light-transmitting portion 92 corresponds to the position of the character function key on the background film 8. The light-blocking layer 91 can be formed on the back of the film by printing with opaque ink, or another layer of light-blocking film can be glued on the light-transmitting film. The ink printing method is preferred because it is simple in process and low in cost. The shape and pattern of the light-transmitting portion 92 corresponds to the shape, pattern, and position of the text of the character function key graphic area on the background film 8. The character function key transparent film 9 is also provided with a slot 93 for the background light bar 2 to pass through.

[0038] The character function key transparent film 9 is located in the lower layer in the direction of light projection, and the background film 8 is located in the upper layer in the direction of light projection. The character function key light source 5 projects light outward through the character function key transparent film 9 and background film 8 in sequence, illuminating the character function key graphics. The background light source 6 illuminates the background film 8. When the character function key transparent film 9 and background film 8 work in conjunction with the light source, the display module displays the background graphics and character function keys. The display of graphics is mainly achieved through the cooperation of the two films and different light sources.

[0039] Each touch-control key zone's character function key light source 5 is individually configured and controlled. When a touch-control key zone is operated, the character function key light source 5 in that touch-control key zone is highlighted or flashes in a combination of highlighted and half-lit state. When a character function key light source 5 is illuminated or flashes, the light first passes through the light-transmitting area of ​​the character function key transparent film 9 and is projected upward. It then passes through the background light guide plate 4 and background film 8 to display the specific character function key.

[0040] The working principle of this utility model:

[0041] like Figure 7 As shown, the projection path of the light from the background light source 6 is shown. During operation, the household appliance is turned on or the power module is turned on, and the main control circuit controls the background light source 6 to light up. The light from the side-emitting background light source 6 first passes through the background light guide plate 4 for uniform light, and then is projected in the direction of the background diaphragm 8. After the light from the background light source 6 passes through the background diaphragm 8, the background image and text can be presented on the background diaphragm 8. The background light source 6 can be half bright, and the brightness is lower than the brightness of the character function key light source 5. It can also be instantly bright when turned on, and then tend to be half bright. When the household appliance is in working state, the background light source 6 is usually always bright, and can also be set to always bright or light up under certain functions. This embodiment uses the background light guide plate 4, the background light source 6 and the background diaphragm 8 to cooperate. The background diaphragm 8 displays the background image and text under the light of the background light source 6, and displays the function key image and text under the projection of the character function key light source 5.

[0042] like Figure 8 The figure shows the projection path of the light from the character function key light source 5. When a user touches a touch control key area, the character function key light source 5 in that touch control key area is illuminated or flashes alternately with high and low brightness. The light from the character function key light source 5 first passes through the light-transmitting area of ​​the first film 4 (the character function key light-transmitting area) and is projected upward. Then, it passes through the background light guide plate 4 upward, and finally passes through the function key graphics on the background film 8.

[0043] Example 2

[0044] A display panel employing the dual-light source image projection stand-type display module of Example 1. The background film 8 comprises a composite touch film and color film. The outer layer of the entire background film 8 is a glass or acrylic panel for household appliances. The entire display module is positioned closely against the cover plate. When the touch film and color film of the background film 8 are provided separately, the color film is attached to the upper surfaces of the background light guide plate 4 and the light-blocking support member 7, while the touch film is provided on the inner surface of the panel.

[0045] Example 3

[0046] A household appliance adopts the dual-light source image and text projection bracket display module of Example 1 or the display panel of Example 2, and the household appliance includes but is not limited to a washing machine, a refrigerator, a dishwasher, a water purifier pipeline machine, a tea bar machine, a range hood, a water heater, an oven, a sweeper, an air conditioner or other household appliances.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A dual-light source image and text projection bracket display module, characterized by: The device comprises a background light source (6), a character function key light source (5), a character function key transparent film (9) located on a lower layer, and a background film (8) located on an upper layer. The character function key light source (5) sequentially projects light outward through the character function key transparent film (9) and the background film (8) to illuminate the character function key graphics, and the background light source (6) illuminates the background film (8).

2. The dual-light source image and text projection stand-type display module according to claim 1, characterized in that: The display module further comprises a PCB board (1) and a background light bar (2) embedded in a bracket (3); a character function key transparent film (9), a background light guide plate (4), and a background film (8) are sequentially arranged on the upper surface of the bracket (3); and a light-blocking support member (7) is arranged on the periphery of the background light guide plate (4).

3. The dual-light source image and text projection stand-type display module according to claim 2, characterized in that: A plurality of lamp cavities (31) are provided on the bracket (3), and the character function key light sources (5) are located in the lamp cavities (31).

4. The dual-light source image and text projection stand-type display module according to claim 2, characterized in that: The background light source (6) is arranged on the background light strip (2), and the side-emitting background light source (6) is located on one side or both sides of the background light guide plate (4).

5. The dual-light source image and text projection stand-type display module according to claim 2 or 4, characterized in that: The background light strip (2) is located on the side of the bracket (3) and passes through the bracket (3); the lower end of the background light strip (2) is electrically connected to the PCB board (1).

6. The dual-light source image and text projection stand-type display module according to claim 5, characterized in that: The character function key transparent film (9) is located between the bracket and the background light guide plate (4); the character function key portion of the character function key transparent film (9) is light-transmissive, while the other portion is light-shielding.

7. The dual-light source image and text projection stand-type display module according to claim 2, characterized in that: The background film (8) is a composite arrangement of a touch film and a color film, which is attached to the upper surface of the light guide plate and the light blocking support (7); or the touch film and the color film of the background film (8) are separately arranged, the color film is attached to the upper surface of the light guide plate and the light blocking support (7), and the touch film is arranged on the inner surface of the panel.

8. The dual-light source image and text projection stand-type display module according to claim 1, characterized in that: The brightness of the background light source (6) is smaller than the brightness of the character function key light source (5).

9. A display panel, comprising the dual-light source image and text projection bracket display module according to any one of claims 1 to 8.

10. A household appliance, comprising the dual-light source image and text projection bracket display module according to any one of claims 1 to 8 or the display panel according to claim 9.

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