Intelligent knob display screen

Abstract

The utility model discloses an intelligent knob display screen, including the backplate, lower polaroid, display panel, upper polaroid, mirror surface polaroid and glass cover plate that are in turn laminated, mirror surface polaroid is towards the upper polaroid one side surface silk screen half -transparent white ink, still include support, and the support inboard side holds glass cover plate side, and open has the support step and holds glass cover plate bottom part. The present application avoids oxidation discoloration through the ink inner shift, and the multidirectional support of the support is combined and enhances the stability of glass cover plate, solves the problem that the ink is easy to discolor in the prior art, and the structure stability is poor, realizes integrated white display effect and the display content can be freely edited.

Description

Technical Field

[0001] This utility model relates to the technical field of intelligent knob displays, and more particularly to an intelligent knob display screen. Background Technology

[0002] In the field of smart display devices, the all-in-one white display effect is widely used in various terminal products, especially in the human-computer interaction interface of smart home devices, because it combines aesthetics and practicality.

[0003] Currently, most all-in-one white display products use LED modules as the display light source. The technical principle is to drive LED beads to emit light through a pre-set circuit, which, in conjunction with fixed segments or patterns silkscreened on the glass cover, achieves the display function. However, this solution can only display simple segments (such as the outlines of numbers and letters) or fixed patterns (such as function icons) preset at the factory. It cannot dynamically edit and update the UI interface through a software system, making it difficult to meet users' needs for personalized display effects and diverse information display. To achieve an all-in-one white effect, the ink transmittance on the glass cover usually needs to be reduced to below 0.5%. This high opacity design results in low overall display brightness, easily leading to poor visibility in strong light environments.

[0004] Some technologies attempt to replace LED modules with TFT-LCDs (Thin Film Transistor Liquid Crystal Displays), leveraging their ability to control pixel display via software programming to achieve free editing of the UI. A typical implementation involves adding a mirror polarizer above the upper polarizer of the TFT-LCD and silkscreening white ink on the inside of the glass cover. While this solution solves the problem of programmable display content, it still suffers from the following technical drawbacks: the white ink on the glass cover is directly exposed. When knobs are installed in smart home devices (such as air conditioner and audio control panels), frequent user operation leads to fingers or objects coming into contact with the ink surface, easily causing ink oxidation, contamination, or color migration. This causes the uniform white effect to gradually yellow or develop color spots, severely affecting the consistency of the product's appearance. Traditional fixing methods rely solely on adhesive to attach the glass cover, lacking effective support for the cover's edges. Over long-term use, external impacts can easily cause the cover to loosen or shift, affecting the optical matching accuracy between the polarizer and the LCD, resulting in problems such as ghosting or uneven brightness. Therefore, existing technologies suffer from problems such as ink discoloration and poor structural stability. Summary of the Invention

[0005] This utility model aims to at least partially solve one of the problems in related technologies. Therefore, one objective of this utility model is to provide an intelligent knob display screen for realizing…

[0006] A smart knob display screen includes a back plate, a lower polarizer, a display panel, an upper polarizer, a mirror polarizer, and a glass cover plate stacked sequentially. The surface of the mirror polarizer facing the glass cover plate is screen-printed with semi-transparent white ink. The smart knob display screen also includes a bracket, the inner side of which abuts against the side of the glass cover plate. The bracket has a supporting step, which abuts against the bottom of the glass cover plate.

[0007] Furthermore, the supporting step includes a vertically arranged side surface and a horizontally arranged bottom surface, the side surface abutting against the side edge of the glass cover plate, and the bottom surface abutting against the bottom of the glass cover plate.

[0008] Furthermore, the bottom width of the supporting step ranges from 0.25 mm to 0.35 mm.

[0009] Furthermore, the bracket is made of plastic.

[0010] Furthermore, the bottom surface of the supporting step is connected to the bottom of the glass cover plate by double-sided adhesive tape.

[0011] Furthermore, the display panel is a TFT-LCD display panel.

[0012] Furthermore, the transmittance of the semi-transparent white ink ranges from 10% to 30%.

[0013] Furthermore, the inner side of the bracket is provided with anti-slip texture.

[0014] Furthermore, the side of the supporting step is provided with an elastic buffer layer, which is made of silicone or EVA foam.

[0015] Furthermore, the thickness of the elastic buffer layer ranges from 0.1mm to 0.2mm.

[0016] The technical solutions provided in this application have the following advantages compared with the prior art:

[0017] This application involves attaching a mirror polarizer to an upper polarizer and then covering it with a glass cover plate printed with semi-transparent white ink. The combination of the mirror polarizer and the semi-transparent white ink achieves a uniform white effect before illumination while maintaining high transmittance. A bracket is included, with its inner side holding the side of the glass cover plate in place, and its supporting steps abutting the bottom of the glass cover plate. This design prevents the semi-transparent white ink from being directly exposed to the outside of the glass cover plate, avoiding direct contact between the ink and external objects. This effectively solves the problems of oxidation, contamination, and discoloration of white ink due to frequent contact in existing technologies, ensuring the long-term stability of the uniform white effect and the consistency of the product's appearance. Furthermore, the supporting structure on the side of the glass cover plate prevents it from being pressed, improving the installation stability of the glass cover plate and reducing the risk of loosening or shifting due to external impacts during long-term use. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] In the attached image:

[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the intelligent knob display screen of this application;

[0022] Figure 2 This is an exploded view of the overall structure of the intelligent knob display screen of this application;

[0023] Figure 3 This is a partial cross-sectional structural diagram of the intelligent knob display screen of this application.

[0024] Figure label:

[0025] 1. A smart knob display screen; 10. Back panel; 20. Lower polarizer; 30. Display panel; 40. Upper polarizer; 50. Mirror polarizer; 60. Glass cover; 61. Semi-transparent white ink; 70. Bracket; 71. Support step; 80. Double-sided adhesive. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] like Figure 1 - Figure 3 As shown, the present application provides an intelligent knob display screen 1, which includes a back plate 10, a lower polarizer 20, a display panel 30, an upper polarizer 40, a mirror polarizer 50, and a glass cover plate 60 stacked in sequence. The intelligent knob display screen is characterized in that the surface of the mirror polarizer 50 facing the glass cover plate 60 is screen-printed with semi-transparent white ink 61. The intelligent knob display screen also includes a bracket 70, the inner side of which abuts against the side of the glass cover plate 60. The bracket 70 has a supporting step 71, which abuts against the bottom of the glass cover plate 60.

[0029] Semi-transparent white ink 61 is screen-printed on the side of the mirror polarizer 50 facing the glass cover 60, and the side of the glass cover 60 is sealed by the bracket 70, so that the ink is completely wrapped by the glass cover 60 and the mirror polarizer 50, avoiding direct contact with external objects such as fingers and dust. This fundamentally solves the problem of ink oxidation and discoloration due to frequent contact in the prior art, and ensures the long-term stability of the integrated white display effect.

[0030] The inner side of the bracket 70 abuts against the side of the glass cover plate 60, while the supporting step 71 abuts against the bottom of the cover plate, forming a double mechanical fixing structure of "side + bottom". This design replaces the traditional single glue bonding method, significantly enhancing the installation stability of the glass cover plate 60, reducing the risk of the cover plate loosening or shifting due to external impacts (such as user pressing) during long-term use, and thus avoiding the problem of decreased optical matching accuracy between the polarizer and the LCD caused by cover plate displacement.

[0031] Furthermore, the supporting step 71 includes a vertically arranged side surface and a horizontally arranged bottom surface, the side surface abutting against the side edge of the glass cover plate 60, and the bottom surface abutting against the bottom of the glass cover plate 60.

[0032] The vertical side supports the glass cover plate at 60°, limiting its horizontal displacement; the horizontal bottom surface supports the bottom of the cover plate, withstanding vertical pressure. This "L-shaped" structure provides three-dimensional support for the cover plate's edges. Compared to traditional single-plane support (such as bottom or side support only), it can more evenly distribute external impact forces, preventing the cover plate from cracking or shattering due to excessive local stress.

[0033] The two-dimensional support structure provides a clear positioning reference for the glass cover 60, which can ensure the relative positional accuracy between the cover and the underlying optical components (such as the mirror polarizer 50 and TFTLCD) during the assembly process, thereby ensuring the brightness uniformity and optical consistency of the display screen and avoiding display ghosting or uneven brightness caused by cover offset.

[0034] Furthermore, the bottom width of the supporting step 71 ranges from 0.25 mm to 0.35 mm.

[0035] If the step width is too large (e.g., exceeding 0.35mm), the edge of the bracket 70 may extend excessively into the display area, obstructing the optical components below the glass cover 60 and affecting the viewing range of the display image. This solution limits the width to 0.25-0.35mm, ensuring the step is only located in the non-display area at the edge of the glass cover 60, without affecting the integrity of the central display image. If the step width is too small (e.g., less than 0.25mm), the contact area between the horizontal bottom surface and the bottom of the glass cover 60 will be insufficient, potentially leading to insufficient support strength and inability to effectively withstand the vertical pressure on the cover. A width of 0.25-0.35mm provides sufficient contact area to distribute pressure while ensuring the structural strength of the bracket 70 itself, preventing step deformation due to long-term stress.

[0036] Furthermore, the bracket 70 is made of plastic.

[0037] Plastic materials (such as ABS and PC) are less expensive than metal materials (such as aluminum alloys) and can be quickly processed into complex structures such as steps and slots through injection molding, making them suitable for mass production. At the same time, the lower density of plastic materials reduces the weight of the entire knob display screen, making it more suitable for installation in smart home devices. Plastic materials themselves have a certain degree of elasticity, allowing for slight deformation when subjected to external impacts, thereby absorbing some of the impact force and reducing damage to the glass cover 60 and internal optical components, further improving the structure's impact resistance.

[0038] Furthermore, the bottom surface of the supporting step 71 is connected to the bottom of the glass cover plate 60 by double-sided adhesive tape 80.

[0039] The double-sided adhesive 80 has a certain degree of adhesion, forming a flexible connection between the step of the bracket 70 and the bottom of the glass cover plate 60. This assists the mechanical support structure in enhancing the fixing effect, especially reducing the relative displacement between the cover plate and the bracket 70 under minor vibration environments. Simultaneously, the adhesive layer of the double-sided adhesive 80 is elastic, providing some shock absorption and reducing the impact of external vibrations on the internal components of the display screen. The double-sided adhesive 80 can fill the tiny gaps between the bottom of the step and the bottom of the glass cover plate 60, preventing dust, moisture, and other impurities from entering the display screen and avoiding contamination of optical components such as the mirror polarizer 50 and the ink layer, thus ensuring the long-term stability of the integrated white display effect.

[0040] Furthermore, the display panel 30 is a TFT-LCD display panel 30.

[0041] The TFTLCD display panel 30 allows for software programming to control the brightness and color of each pixel, enabling free editing and dynamic updates of the UI interface (such as displaying text, images, and animations), thus meeting users' needs for personalized display effects. This is significantly different from the characteristic of traditional LED modules, which can only display fixed segments or patterns, greatly expanding the information display capabilities of the smart knob. The TFTLCD, combined with a polarizer and backlight system, can achieve higher brightness uniformity and color reproduction. Combined with the semi-transparent white ink 61 and mirror polarizer 50 in this solution, it can present a clear and delicate display image when lit, while maintaining a uniform white aesthetic effect when off, solving the problem of low screen brightness caused by high occlusion rates in existing technologies.

[0042] Furthermore, the transmittance of the semi-transparent white ink 61 ranges from 10% to 30%.

[0043] When the transmittance is below 30%, the ink has sufficient ability to block ambient light, allowing the display screen to present a uniform white appearance when off, meeting the aesthetic requirements of an integrated white display. If the transmittance is too high (e.g., above 30%), a large amount of ambient light will penetrate the ink, resulting in insufficient whiteness when off, affecting the consistency of appearance. When the transmittance is above 10%, the light emitted by the TFTLCD display panel 30 can effectively penetrate the ink layer, ensuring the brightness and clarity of the image when lit. If the transmittance is too low (e.g., below 10%), the display image will be too dark, resulting in poor visibility in strong light environments. A transmittance of 10%-30% achieves the best balance between blocking effect and light transmission.

[0044] Furthermore, the inner side of the bracket 70 is provided with anti-slip texture.

[0045] Anti-slip textures (such as serrated or grid-like patterns) increase the surface roughness of the contact surface between the inner side of the bracket 70 and the side of the glass cover 60. According to the friction formula, a rough surface generates greater static friction, effectively preventing the glass cover 60 from shifting when subjected to horizontal external forces (such as the lateral force when a user rotates a knob). This is especially important in scenarios where users frequently operate the knob, preventing display abnormalities caused by a loose cover. The anti-slip texture design reduces wear on the contact surface caused by long-term friction. Compared to smooth surfaces, rough surfaces wear more slowly, ensuring that the friction between the bracket 70 and the cover remains stable during long-term use, preventing structural loosening due to wear.

[0046] Furthermore, the side of the supporting step 71 is provided with an elastic buffer layer, the elastic buffer layer being made of silicone or EVA foam.

[0047] When the glass cover 60 is subjected to external impacts (such as pressing or collisions), the elastic buffer layer (silicone or EVA foam) can absorb most of the impact force through elastic deformation, reducing the transmission of impact force to the glass cover 60 and internal optical components, thereby reducing the risk of cover breakage and polarizer damage. This design is particularly suitable for installation in smart home devices. Both silicone and EVA foam have good elasticity, weather resistance, and anti-aging properties, and excellent adhesion to the plastic bracket 70, maintaining the buffering effect for a long time. At the same time, the hardness of these two materials is moderate (Shore hardness 30-50A), providing sufficient buffering force without being too hard causing uneven stress on the cover or too soft causing support failure.

[0048] Furthermore, the thickness of the elastic buffer layer ranges from 0.1mm to 0.2mm.

[0049] When the thickness is not less than 0.1mm, the elastic buffer layer has sufficient deformation space to effectively absorb external impact forces. If the thickness is too small (e.g., less than 0.1mm), the buffer layer will not deform sufficiently and will not be able to absorb energy adequately, resulting in a decrease in buffering effect. When the thickness does not exceed 0.2mm, it can avoid the buffer layer from excessively occupying the installation space between the bracket 70 and the glass cover plate 60, preventing the glass cover plate 60 from being misaligned due to an excessively thick buffer layer, thus affecting the optical matching with the optical components below. A thickness of 0.1-0.2mm is considered an ultra-thin design, which can adapt to the narrow installation space of smart knobs, and is especially suitable for smart home devices with high size requirements (such as small air conditioner control panels), improving impact resistance without increasing the overall thickness.

[0050] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A smart knob display screen, comprising a back plate, a lower polarizer, a display panel, an upper polarizer, a mirror polarizer, and a glass cover plate stacked sequentially, characterized in that, The mirror polarizer has a semi-transparent white ink screen printed on the side facing the glass cover. The smart knob display screen also includes a bracket, the inner side of which abuts against the side of the glass cover. The bracket has a supporting step, which abuts against the bottom of the glass cover.

2. The intelligent rotary knob display screen according to claim 1, characterized in that, The supporting step includes a vertically arranged side surface and a horizontally arranged bottom surface. The side surface abuts against the side edge of the glass cover plate, and the bottom surface abuts against the bottom of the glass cover plate.

3. The intelligent rotary knob display screen according to claim 2, characterized in that, The bottom width of the supporting step ranges from 0.25mm to 0.35mm.

4. The intelligent rotary knob display screen according to claim 3, characterized in that, The bracket is made of plastic.

5. The intelligent rotary knob display screen according to claim 2, characterized in that, The bottom surface of the supporting step is connected to the bottom of the glass cover plate by double-sided adhesive tape.

6. The intelligent rotary knob display screen according to claim 1, characterized in that, The display panel is a TFT-LCD display panel.

7. The intelligent rotary knob display screen according to claim 1, characterized in that, The transmittance of the semi-transparent white ink ranges from 10% to 30%.

8. The intelligent rotary knob display screen according to claim 1, characterized in that, The inner side of the bracket is provided with anti-slip texture.

9. The intelligent rotary knob display screen according to claim 2, characterized in that, The side of the supporting step is provided with an elastic buffer layer, which is made of silicone or EVA foam.

10. The intelligent rotary knob display screen according to claim 9, characterized in that, The thickness of the elastic buffer layer ranges from 0.1mm to 0.2mm.

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