Ultra-thin display module based on rib position support

Abstract

The utility model discloses an ultrathin display module based on rib position support, which belongs to the technical field of household appliance display screens, a hard thin plate is fixedly connected on the upper surface of a circuit board of the display module, through holes are arranged on the hard thin plate at positions corresponding to touch display keys, and the through holes are separated by rib positions. Light guide plates are arranged in the through holes of the hard thin plate, the rib positions limit the light guide plates and block light between the adjacent light guide plates, and a membrane is arranged above the hard thin plate. The hard thin plate is divided into a thin plate body and a rib position connected with the thin plate body, and the rib position and the thin plate body are integrally formed. The hard thin plate is adopted to replace a foam layer, deformation is not prone to occurring, and the light guide plate is better supported and limited. And the size of the rib position can be extremely narrow, so that the gap between the touch display keys is reduced, and the display of the panel is more attractive. The hard thin plate is integrally formed and can be made into different thicknesses in different areas, and the thickness requirements of the different areas are met.

Description

Technical Field

[0001] This utility model belongs to the field of display screen technology, specifically relating to an ultra-thin display module based on rib support. Background Technology

[0002] In the applicant's earlier patent applications, foam was generally used as a light-blocking layer, and also as a filler between the circuit board and the diaphragm. However, foam is relatively soft, and blocking light between multiple light guide plates requires a large width; thin foam is prone to deformation. First, it is inconvenient to fix it to the circuit board; second, deformed foam layers cannot accurately fix the light guide plates, which is detrimental to limiting the positioning of the light guide plates; third, it is not suitable for scenarios where the spacing between touch display buttons needs to be very narrow. Utility Model Content

[0003] The technical problem solved by this utility model is to provide an ultra-thin display module based on rib support for a stable fixation of the light guide plate.

[0004] Technical solution: To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] An ultra-thin display module based on rib support has a rigid thin plate fixedly connected to the upper surface of the circuit board of the display module. Through holes are opened on the rigid thin plate at positions corresponding to the touch display buttons, and the through holes are separated by ribs.

[0006] Furthermore, a light guide plate is provided in the through hole of the rigid thin plate, the rib limits the light guide plate and blocks the light between adjacent light guide plates, and a diaphragm is provided above the rigid thin plate.

[0007] Furthermore, the rigid sheet is divided into a sheet body and ribs connected to the sheet body, and the ribs are integrally formed with the sheet body.

[0008] Furthermore, the thickness of the rib is less than or equal to the thickness of the sheet body, which is 0.5mm to 3mm.

[0009] Furthermore, the width of the rib is 0.5mm to 3mm.

[0010] Furthermore, the vertical cross-section of the rib is rectangular or trapezoidal, and the base area of ​​the trapezoidal rib is larger than the top area.

[0011] Furthermore, a reinforcing block is provided at the end of the rib at the connection with the thin plate body, and the width of the reinforcing block is greater than the width of the rib.

[0012] Furthermore, the LED light source on the circuit board is located on the side of the through hole between the two reinforcing blocks.

[0013] Furthermore, the rigid sheet is fixed to the circuit board by means of bonding, riveting, or screwing. Furthermore,

[0014] Furthermore, multiple positioning connecting posts are provided on the back of the rigid thin plate, and connecting holes are provided on the circuit board at positions corresponding to the positioning connecting posts.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0016] (1) The ultra-thin display module based on rib support of this utility model uses a rigid thin plate to replace the foam layer, which is not easily deformed and provides better support and positioning of the light guide plate.

[0017] (2) The ultra-thin display module based on rib support of this utility model can have extremely narrow rib dimensions, reducing the gap between touch display buttons and making the panel display more aesthetically pleasing.

[0018] (3) The ultra-thin display module based on rib support of this utility model is integrally formed from a rigid thin plate, and can be made into different thicknesses in different areas to meet the thickness requirements of different areas.

[0019] (4) In the ultra-thin display module based on rib support of this utility model, the connection between the rigid thin plate and the circuit board is preferably made by hot riveting. A connecting positioning post is set on the rigid thin plate and a connecting hole is set on the circuit board. The connecting positioning post and the connecting hole are used together to achieve precise positioning. The two are fixed by hot-melt riveting using the remaining part of the connecting positioning post. The installation is convenient and the fixation is stable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an ultra-thin display module based on rib support;

[0021] Figure 2 This is a schematic diagram of an ultra-thin display module based on rib support, omitting the diaphragm structure.

[0022] Figure 3 This is a schematic diagram of an ultra-thin display module based on rib support, omitting the film and light guide plate structure.

[0023] Figure 4 It is the back of an ultra-thin display module based on rib support;

[0024] Figure 5 This is an exploded view of an ultra-thin display module based on rib support. Detailed Implementation

[0025] The present invention will be further illustrated below with reference to specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0026] like Figure 1 As shown, the ultra-thin display module based on rib support of this utility model mainly includes a circuit board 1, a rigid thin plate 2, a light guide plate 3, a film 4, an LED light source 5, a connecting hole 11, a through hole 21, a rib 22, a thin plate body 23, a reinforcing block 24, a digital tube area 25, and a positioning connecting post 26, etc.

[0027] A rigid thin plate 2 is fixedly connected to the upper surface of the circuit board 1 of the display module. A light guide plate 3 is provided in the through hole 21 of the rigid thin plate 2. Ribs 22 limit the light guide plate 3 and block the light between adjacent light guide plates 3. A film 4 is provided above the rigid thin plate 2.

[0028] The rigid sheet 2 is divided into a sheet body 23 and ribs 22 connected to the sheet body 23. The ribs 22 are integrally formed with the sheet body 23. Through holes 21 are formed on the rigid sheet 2 at positions corresponding to the touch display buttons, and the through holes 21 are separated from each other by the ribs 22.

[0029] The thickness of the rib 22 is less than or equal to the thickness of the thin plate body 23, and the thickness of the thin plate body 23 is 0.5mm to 3mm.

[0030] The thickness of the rib 22 can be equal to the thickness of the thin plate body 23, and the entire thin plate has a uniform thickness. At this time, the light guide plate 3 adopts an independent light guide plate 3. The light guide plate 3 corresponding to each touch button is independent. Each light guide plate 3 is set in a different through hole 21. The rib 22 plays a positioning and spacing role for the light guide plate 3. The rib 22 also blocks the light between adjacent light guide plates 3 to prevent light from leaking into the adjacent display area.

[0031] The thickness of the rib 22 can also be less than the thickness of the thin plate body 23. In this case, the light guide plate 3 can be a single piece of light guide plate 3, and a slot (not shown in the figure) can be opened on the back of the light guide plate 3. The position of the slot corresponds to the position of the rib 22. The slot is engaged with the rib 22, which achieves both positioning and light blocking.

[0032] A digital tube area 25 can also be set on the thin plate body 23 of the rigid thin plate 2. The digital tube uses bottom-emitting LED light source. The light from the LED light source needs a certain travel distance to present the effect of surface emission. In order to meet the travel requirements of the LED light source, the height of the lamp cavity needs to be greater than the height of the side-emitting LED light source. Therefore, the thickness of the rigid thin plate 2 of the digital tube area 25 can be greater than the thickness of the thin plate body 23; or it can be the same as the thickness of the thin plate body 23, so that the entire thin plate body is set to a uniform height. It can be set according to the actual situation.

[0033] The width of the rib 22 is 0.5mm to 3mm. In this embodiment, it is set to 2mm, but it can be set according to the actual situation.

[0034] The vertical cross-section of rib 22 is rectangular or trapezoidal, with the base area of ​​the trapezoidal rib 22 being larger than the top area. The larger base area increases the connection area with circuit board 1.

[0035] A reinforcing block 24 is provided at the end of the rib 22 at the connection with the thin plate body 23. The width of the reinforcing block 24 is greater than the width of the rib 22 to increase the connection strength with the thin plate body 23. LED light sources can be arranged between pairs of reinforcing blocks 24. In addition, the reinforcing block 24, as a protrusion, can also be used to position a single light guide plate 3.

[0036] The LED light source 5 on the circuit board 1 is located on the side of the through hole 21 between the two reinforcing blocks 24.

[0037] The rigid thin plate 2 is fixed to the circuit board 1 by means of bonding, riveting, or screw connection. For example... Figure 4 As shown, in this embodiment, the rigid thin plate 2 is fixed to the circuit board 1 by thermoforming riveting. Multiple positioning connecting posts 26 are provided on the back of the rigid thin plate 2, and connecting holes 11 are provided on the circuit board 1 at positions corresponding to the positioning connecting posts 26. The positioning connecting posts 26 and connecting holes 11 are located at the four corners of the rigid thin plate 2 and the circuit board 1, and multiple posts are also provided on the circuit board 1 in blank spaces avoiding circuit components. This facilitates multi-point positioning and multi-point connection, ensuring a tight connection between the rigid thin plate 2 and the circuit board 1.

[0038] After all the positioning connecting posts 26 on the rigid thin plate 2 have extended into the connecting holes 11, the positioning connecting posts 26 are hot-melt riveted from the side of the circuit board 1 to fix the rigid thin plate 2 and the circuit board 1. During hot-melt riveting, the length of the positioning connecting posts 26 is greater than the thickness of the circuit board 1 to reserve sufficient riveting length.

[0039] If adhesive bonding is used for fixing, positioning connecting posts 26 can also be set. In this case, the length of the positioning connecting posts 26 can be less than or equal to the thickness of the circuit board 1. In this case, the positioning connecting posts 26 only serve a positioning function. Glue is applied to the blank part of the lower surface of the rigid thin plate 2 or the upper surface of the circuit board 1 to fix the two.

[0040] The rigid sheet 2 is made of general-purpose plastic materials such as PVC, ABS or PC, or it can be made of general-purpose engineering plastics such as polyamide or ultra-high molecular weight polyethylene. When the rigid sheet is fixed by hot riveting process, thermoplastic plastic is preferred.

[0041] The diaphragm 4 is an integrated touch-sensitive film, a composite of a touch film and a color film, adhered to the upper surface of a rigid thin board. The touch film is electrically connected to the PCB board 1 via a ribbon cable. Background graphics are set on the color film, with patterns such as a moon or other vibrant backgrounds set according to the user's design requirements. Alternatively, the diaphragm 4 can be a single piece with a colored pattern, with the touch film positioned on the circuit board 1 at the location corresponding to the touch display button, below the light guide plate 3. The touch film can be in the form of a conductive layer such as touch copper foil.

[0042] A reflective film or reflective coating is also provided on the upper surface of the circuit board at the position corresponding to the light guide plate 3, which reflects the light emitted by the LED toward the film to further improve the brightness.

[0043] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An ultra-thin display module based on rib support, characterized in that: A rigid thin plate (2) is fixedly connected to the upper surface of the circuit board (1) of the display module. Through holes (21) are opened on the rigid thin plate (2) at the positions corresponding to the touch display buttons. Through holes (21) are separated by ribs (22).

2. The ultra-thin display module based on rib support according to claim 1, characterized in that: A light guide plate (3) is provided in the through hole (21) of the rigid thin plate (2). The rib (22) limits the light guide plate (3) and blocks the light between adjacent light guide plates (3). A diaphragm (4) is provided above the rigid thin plate (2).

3. The ultra-thin display module based on rib support according to claim 1, characterized in that: The rigid sheet (2) is divided into a sheet body (23) and a rib (22) connected to the sheet body (23), wherein the rib (22) is integrally formed with the sheet body (23).

4. The ultra-thin display module based on rib support according to claim 3, characterized in that: The thickness of the rib (22) is less than or equal to the thickness of the thin plate body (23), and the thickness of the thin plate body (23) is 0.5mm to 3mm.

5. The ultra-thin display module based on rib support according to claim 1, characterized in that: The width of the rib (22) is 0.5mm~3mm.

6. The ultra-thin display module based on rib support according to claim 1, characterized in that: The vertical cross section of the rib (22) is rectangular or trapezoidal, and the bottom area of ​​the trapezoidal rib (22) is greater than the top area.

7. The ultra-thin display module based on rib support according to claim 1, characterized in that: A reinforcing block (24) is provided at the end of the rib (22) at the connection with the thin plate body (23), and the width of the reinforcing block (24) is greater than the width of the rib (22).

8. The ultra-thin display module based on rib support according to claim 1, characterized in that: The LED light source (5) on the circuit board (1) is set on the side of the through hole (21) between the two reinforcing blocks (24).

9. The ultra-thin display module based on rib support according to claim 1, characterized in that: The rigid sheet (2) is fixed to the circuit board (1) by means of bonding, riveting or screw connection.

10. The ultra-thin display module based on rib support according to claim 1 or 9, characterized in that: Multiple positioning connecting posts (26) are provided on the back of the rigid thin plate (2), and connecting holes (11) are provided on the circuit board (1) at positions corresponding to the positioning connecting posts (26).

Images