Composite display module
Patent Information
- Application Number
- CN202522242441.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-09-25
- Estimated Expiration
- 2035-10-23
AI Technical Summary
因此，该模组无法在整个显示区域的背景或前景上呈现连续、完整的图形或图案（例如，一条贯穿多个图标区域的动态光带、一个整体的品牌标识或一个连续的状态条）
[0012]本实用新型的有益效果是：通过引入侧发光光源与传统的顶发光光源相结合，实现了显示功能的显著提升与创新。通过在盖板与彩膜之间设置带有微结构导光点图案的透明导光板及侧发光光源，使得模组能够在彩膜图标显示的基础上，额外在整个显示区域呈现出连续、完整且不影响底层图标显示的前景图案，彻底克服了传统灯架隔离结构导致的显示割裂问题。侧发光光源采用RGB LED灯，进一步使前景图案具备全彩显示能力，通过颜色变化直观传递多样状态信息，极大增强了显示的灵活性与信息表达维度。导光板背侧增设的半反射半透射功能层有效将射向彩膜的光线反射回导光板，显著提升了前景图案的亮度和对比度，同时确保了显示模式的纯净性。灯架结构及其独立腔室设计不仅实现了各图标背光的精确隔离与控制，消除了光串扰，还提高了光源利用率和显示均匀性，并为各光学部件提供了稳定的机械支撑。半透明盖板在光源全闭状态下隐藏内部结构，赋予产品外观一体化美感。综上所述，本实用新型成功实现了独立图标显示与整体连续前景多色显示的有机融合，兼具高度的显示灵活性、优异的视觉表现力及紧凑的结构可靠性，全面满足了现代家电对高端、生动、多样化人机交互界面的需求。
Smart Images
Figure CN224803568U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of display modules, and in particular to a composite display module. Background Technology
[0002] Human-computer interaction interfaces for home appliances widely employ display modules to indicate device status, mode, and function. Currently, the mainstream display solution on the market uses display modules that combine LED programmable backlighting with a color film (hereinafter referred to as "color film"). In this type of module, the color film is printed with multiple icons representing different functions (such as switch, mode, temperature, etc.). These icons consist of light-transmitting areas, while the remaining parts are light-blocking areas. An LED light source is located behind the color film as backlight. By controlling the on / off state and brightness changes of the LED light source at specific locations, its light penetrates the corresponding light-transmitting icons on the color film, thereby displaying and turning off specific icons, making human-computer interaction more intuitive and vivid.
[0003] To achieve independent display control for each icon and prevent display interference caused by light crosstalk between adjacent icons, existing display modules typically require a lamp holder structure between the LED light source and the color filter. This lamp holder consists of multiple partitions, physically isolating the backlight area into several independent chambers corresponding to the color filter icons. Each chamber contains an independent LED light source, allowing for precise control of the brightness of individual icons.
[0004] However, this display solution based on light fixture isolation has significant limitations. Because the light fixtures physically block the lateral propagation of light, the icons appear visually isolated. Therefore, the module cannot present continuous, complete graphics or patterns (e.g., a dynamic light strip spanning multiple icon areas, a unified brand logo, or a continuous status bar) across the entire display area's background or foreground. This fragmented display limits the diversity and expressiveness of the displayed content, making the human-computer interface visually monotonous and rigid, failing to meet the growing demand for high-end, vivid, and diverse display effects. Utility Model Content
[0005] The main technical problem solved by this utility model is to provide a composite display module that can achieve a flexible combination of continuous foreground patterns and independent icons, as well as a colorful display effect.
[0006] To solve the above-mentioned technical problems, the present invention provides a composite display module comprising, in sequence from the viewing side to the back side: a cover plate, a light guide plate, a color filter, a lamp holder, and a top-emitting light source. The cover plate is made of a semi-transparent material to hide the pattern underneath when the light source is off and to transmit light when the light source is on. The light guide plate is made of a transparent material and is disposed between the cover plate and the color filter. The light guide plate has a pattern, and a side-emitting light source is disposed on one side of the light guide plate. The side-emitting light source is optically coupled to the side of the light guide plate and is used to inject light into the light guide plate. When the side-emitting light source is lit, the pattern on the light guide plate is displayed. The color filter has a light-shielding area and at least one light-transmitting area. The lamp holder supports the position of the color filter, and the top-emitting light source is disposed on the back side of the color filter. The top-emitting light source illuminates the light-transmitting area of the color filter through the lamp holder.
[0007] Preferably, the pattern on the light guide plate consists of multiple light guide points that can guide light out, and the light guide points are set on the upper surface of the light guide plate and face the cover plate.
[0008] Preferably, the back side of the light guide plate is also provided with a functional layer with semi-reflective and semi-transmissive optical properties, which is used to reflect the light from the light guide plate onto the color film, thereby making the pattern on the light guide plate display higher brightness.
[0009] Preferably, the side-emitting light source is an RGB LED.
[0010] Preferably, the lamp holder includes multiple independent chambers that isolate the light-transmitting areas of the color film from each other, and the corresponding top-emitting light source is arranged in the corresponding independent chamber.
[0011] Preferably, the top-emitting light source is mounted on the circuit board, and the lamp holder is located between the color filter and the circuit board.
[0012] The beneficial effects of this invention are as follows: By combining a side-emitting light source with a traditional top-emitting light source, a significant improvement and innovation in display functionality is achieved. By setting a transparent light guide plate with microstructured light guide dot patterns and a side-emitting light source between the cover plate and the color filter, the module can, on top of the color filter icon display, additionally present a continuous, complete foreground pattern throughout the entire display area without affecting the display of the underlying icons, completely overcoming the display fragmentation problem caused by traditional lamp holder isolation structures. The side-emitting light source uses RGB LEDs, further enabling the foreground pattern to have full-color display capabilities, intuitively conveying diverse status information through color changes, greatly enhancing the flexibility and information expression dimensions of the display. The semi-reflective and semi-transmissive functional layer added to the back of the light guide plate effectively reflects the light incident on the color filter back to the light guide plate, significantly improving the brightness and contrast of the foreground pattern while ensuring the purity of the display mode. The lamp holder structure and its independent chamber design not only achieve precise isolation and control of the backlight of each icon, eliminating light crosstalk, but also improve the utilization rate of the light source and display uniformity, and provide stable mechanical support for each optical component. The semi-transparent cover conceals the internal structure when the light source is completely closed, giving the product an integrated aesthetic appearance. In summary, this utility model successfully integrates independent icon display with overall continuous foreground multi-color display, possessing both high display flexibility, excellent visual performance, and compact structural reliability, fully meeting the needs of modern home appliances for high-end, vivid, and diverse human-computer interaction interfaces. Attached Figure Description
[0013] Figure 1 This is an exploded view of the present invention; Figure 2 This is a cross-sectional schematic diagram of the present invention; Figure 3 This is an exploded view of the light guide plate of this utility model when a functional layer is attached. Figure 4 This is a cross-sectional schematic diagram of the light guide plate of this utility model with a functional layer attached.
[0014] The components in the attached diagram are labeled as follows: 1. Cover plate; 2. Light guide plate; 21. Side-emitting light source; 3. Color filter; 4. Lamp holder; 5. Circuit board; 51. Top-emitting light source; 6. Functional layer. Detailed Implementation
[0015] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0019] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0020] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0021] Unless otherwise specified, physical quantities in formulas should be understood as basic quantities of SI base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.
[0022] Example: refer to Figure 1 and Figure 2A composite display module includes, arranged sequentially from the viewing side to the back side: a cover plate 1, a light guide plate 2, a color filter 3, a lamp holder 4, and a top-emitting light source 51. The cover plate 1 is made of a semi-transparent material to hide the pattern underneath when the light source is off and to transmit light when the light source is on. The light guide plate 2 is made of a transparent material and is attached between the cover plate 1 and the color filter 3. The light guide plate 2 has a pattern formed on it, which consists of multiple light guide points that guide light outwards. The light guide points are formed on the upper surface of the light guide plate 2 and face the cover plate 1. A side-emitting light source 21 is provided on one side of the light guide plate 2. The side-emitting light source 21 is optically coupled to the side of the light guide plate 2 and is used to inject light into the light guide plate 2. When the side-emitting light source 21 is lit, the pattern on the light guide plate 2 is displayed. The light guide points adopt a micro-structure, so the light guide plate 2 does not affect the display effect of the color filter 3. When the side-emitting light source 21 is lit, a continuous and complete foreground pattern can be displayed in front of the color filter 3. The color filter 3 has a light-blocking area and at least one light-transmitting area. A lamp holder 4 supports the position of the color filter 3. A top-emitting light source 51 is installed on the back side of the color filter 3. When the top-emitting light source 51 is turned on, its light passes through the lamp holder 4 to illuminate the light-transmitting area of the color filter 3, thus displaying the pattern on the color filter 3. The pattern on the color filter 3 and the pattern on the light guide plate 2 can be displayed in combination, or they can be displayed separately or not, by controlling the on / off state of the corresponding top-emitting light source 51 and side-emitting light source 21. The side-emitting light source 21 is an RGB LED, which can emit light of multiple colors. Therefore, the foreground pattern on the light guide plate 2 can be displayed in different colors, increasing the diversity and flexibility of the display.
[0023] refer to Figure 1 and Figure 2By employing a structure combining independently controllable top-emitting light source 51 and side-emitting light source 21, the display of the pattern on the color filter 3 and the foreground pattern on the light guide plate 2 can be separated, superimposed, or completely turned off. This allows for dynamic combination and flexible switching of display content, greatly enriching the display scenarios for human-computer interaction. Specifically, since the pattern on the light guide plate 2 is composed of multiple microstructured light guide points formed on its surface facing the cover plate 1, when the side-emitting light source 21 is lit, a continuous and complete foreground pattern can be presented in front of the color filter 3, perfectly solving the technical bottleneck of traditional display modules being unable to achieve overall display due to the physical isolation of the lamp holder 4. Furthermore, the side-emitting light source 21 uses RGB LEDs, enabling it to emit light of multiple colors, thus giving the foreground pattern on the light guide plate 2 a multi-color display capability. Different device status information can be intuitively conveyed through color changes, significantly enhancing the diversity of display and the flexibility of information expression. Meanwhile, the light guide plate 2 is made of transparent material and its light guide points are microstructures, ensuring that when only the top light source 51 is turned on, the light guide plate 2 will not affect the clear display of the pattern on the color film 3. This makes the effects of the two display layers both independent and pure, and distinct and non-interfering when superimposed. In addition, the cover plate 1, made of semi-transparent material, can completely hide the lower structure when all light sources are turned off, making the device's appearance a unified solid-color interface, enhancing the product's aesthetics and overall feel. In summary, by layering light sources and display structures, the organic unity of independent icon display and multi-color foreground display is successfully achieved, effectively overcoming the shortcomings of existing technologies such as fragmented display, single mode, and insufficient expressiveness.
[0024] refer to Figure 3 and Figure 4A functional layer 6 with semi-reflective and semi-transmissive optical properties is also attached to the back side of the light guide plate 2. This layer reflects the light emitted from the light guide plate 2 towards the color filter 3, thereby increasing the brightness of the pattern on the light guide plate 2. The functional layer 6 with semi-reflective and semi-transmissive optical properties is a thin metal film (such as aluminum or silver) formed by vapor deposition or sputtering. Its thickness is configured to allow some light to pass through and reflect the rest. Alternatively, the functional layer 6 may be a dielectric multilayer optical film that achieves the desired semi-reflective and semi-transmissive properties through interference effects. Or, the functional layer 6 may be a semi-transparent ink coating doped with reflective particles. The addition of the functional layer 6 with semi-reflective and semi-transmissive optical properties to the back side of the light guide plate 2 significantly improves the performance of this display module. The core function of this functional layer 6 is to effectively reflect the light emitted by the side-emitting light source 21 after it is injected into the light guide plate 2 and directed towards the color filter 3 back into the light guide plate 2, ultimately causing it to exit towards the cover plate 1. This optical management mechanism significantly reduces ineffective leakage and loss of light to the back side when the side-emitting light source 21 is lit, concentrating more light energy for illuminating the foreground pattern. This directly results in a higher brightness and a more vivid display effect for the pattern on the light guide plate 2. Simultaneously, when only the side-emitting light source 21 is operational, this mechanism more effectively blocks light transmission to the lower color filter 3, preventing accidental illumination or stray light from the pattern on the color filter 3. This ensures the purity and contrast of the foreground display, further enhancing the visual purity and expressiveness during dual display mode switching.
[0025] refer to Figures 1-4The lamp holder 4 is located between the color filter 3 and the circuit board 5. The lamp holder 4 includes multiple independent chambers that isolate the light-transmitting areas of the color filter 3 from each other. Top-emitting light sources 51 are mounted on the circuit board 5, and each top-emitting light source 51 is arranged in its corresponding independent chamber. This structural layout of the lamp holder 4 between the color filter 3 and the circuit board 5 provides crucial optical and mechanical support for the top-emitting display function of this module. The multiple independent chambers included in the lamp holder 4 precisely correspond to and isolate the light-transmitting areas on the color filter 3, forming independent optical channels. Each independent chamber contains a corresponding top-emitting light source 51, ensuring that the light emitted by each top-emitting light source 51 is strictly confined within its dedicated chamber, thus completely avoiding lateral crosstalk between adjacent icons. This ensures that each icon composed of a light-transmitting area of the color filter 3 can be independently and precisely controlled to brighten or dim, displaying clearly and distinctly without any halo or overlapping interference. Meanwhile, the independent chamber structure also provides excellent light focusing, reducing light dissipation during propagation and allowing light to concentrate more efficiently and penetrate the color filter 3. This results in better icon display brightness and visual uniformity under the same light source power. Furthermore, the lamp holder 4 provides stable mechanical support and positioning for the color filter 3, circuit board 5, and related light sources, ensuring the accuracy of the relative positions of the optical components and improving the overall structural reliability and assembly precision of the module.
[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A composite display module, characterized in that, The components arranged sequentially from the observation side to the back side include: a cover plate (1), a light guide plate (2), a color filter (3), a lamp holder (4), and a top-emitting light source (51). The cover plate (1) is made of a translucent material to hide the pattern underneath when the light source is off and to transmit light when the light source is on; The light guide plate (2) is made of transparent material and is disposed between the cover plate (1) and the color film (3). The light guide plate (2) has a pattern. A side-emitting light source (21) is disposed on one side of the light guide plate (2). The side-emitting light source (21) is optically coupled to the side of the light guide plate (2). The side-emitting light source (21) is used to inject light into the light guide plate (2). When the side-emitting light source (21) is lit, the pattern on the light guide plate (2) is displayed. The color film (3) is provided with a light-blocking area and at least one light-transmitting area; The lamp holder (4) is used to support the position of the color film (3), and the top light source (51) is set on the back side of the color film (3). The top light source (51) illuminates the light-transmitting area of the color film (3) through the lamp holder (4).
2. The composite display module according to claim 1, characterized in that: The pattern on the light guide plate (2) is composed of multiple light guide points that can guide light rays to be emitted. The light guide points are set on the upper surface of the light guide plate (2) and face the cover plate (1).
3. A composite display module according to claim 2, characterized in that: The back side of the light guide plate (2) is also provided with a functional layer (6) with semi-reflective and semi-transmissive optical properties, which is used to reflect the light emitted by the light guide plate (2) towards the color film (3), thereby making the pattern on the light guide plate (2) display higher brightness.
4. A composite display module according to any one of claims 1-3, characterized in that: The side-emitting light source (21) is an RGB LED lamp.
5. A composite display module according to claim 1, characterized in that: The lamp holder (4) includes multiple independent chambers that isolate the light-transmitting areas of the color film (3) from each other, and the corresponding top light source (51) is arranged in the corresponding independent chamber.
6. A composite display module according to claim 1, characterized in that: The top-emitting light source (51) is mounted on the circuit board (5), and the lamp holder (4) is located between the color filter (3) and the circuit board (5).