Ultra-thin liquid crystal module and liquid crystal display equipment

Abstract

The utility model discloses a liquid crystal module, particularly discloses an ultra-thin liquid crystal module and liquid crystal display equipment, and belongs to the technical field of design and manufacture of direct type liquid crystal display equipment. According to the ultra-thin liquid crystal module and the liquid crystal display device, the user experience and impression can be effectively improved, and the overall space of the device is compressed. The ultra-thin liquid crystal module comprises a liquid crystal display panel and a back plate, reflection paper is attached to the inner side face of the back plate, and the ultra-thin liquid crystal module further comprises an optical film, a multi-partition optical diffusion plate and a multi-light-mixing composite structure. The optical film, the multi-partition optical diffusion plate and the multi-light-mixing composite structure are sequentially arranged between the liquid crystal display panel and the back plate attached with the reflection paper. The multi-light-mixing composite structure at least comprises two kinds of lamp strips or lamp panels with different light mixing distances. The liquid crystal display device comprises an ultra-thin liquid crystal module, a small opening is formed in the back face of the ultra-thin liquid crystal module, and a small rear cover is connected to the small opening in a covering mode.

Description

Technical Field

[0001] This utility model relates to a liquid crystal module, and more particularly to an ultra-thin liquid crystal module, belonging to the technical field of direct-lit liquid crystal display device design and manufacturing. This utility model also relates to a liquid crystal display device using the aforementioned ultra-thin liquid crystal module. Background Technology

[0002] Traditional direct-lit LCD TVs use an integrated planar light cavity and back panel structure, with the power module located in the lower part of the backlight module. This results in two prominent structural defects: firstly, the lower part of the back panel bulges due to module stacking, hindering the design of a thinner and lighter TV; secondly, wall-mounting requires an outward-protruding bracket, resulting in excessive gaps between the device and the wall, affecting both space utilization and visual harmony. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an ultra-thin liquid crystal module that can effectively improve user experience and visual appeal while reducing the overall space of the device, and a liquid crystal display device using the ultra-thin liquid crystal module.

[0004] The technical solution adopted to solve the above-mentioned technical problems is: an ultra-thin liquid crystal module, including a liquid crystal display panel and a back plate, with reflective paper attached to the inner side of the back plate. The ultra-thin liquid crystal module also includes an optical film, a multi-zone optical diffuser plate, and a multi-mixing composite structure. The optical film, the multi-zone optical diffuser plate, and the multi-mixing composite structure are arranged sequentially between the liquid crystal display panel and the back plate with reflective paper attached. The multi-mixing composite structure includes at least two types of lamp strips or lamp panels with unequal mixing distances.

[0005] Furthermore, the optical film is composed of a composite optical module group, and the multi-zone optical diffuser plate is a multi-zone diffuser angle composite plate that includes at least two diffuser angles with different diffuser angles along the vertical and / or width directions.

[0006] The preferred embodiment of the above scheme is that the multi-zone diffusion angle composite panel includes three diffusion angle zones (top, middle, and bottom) along the vertical direction, wherein at least one zone has a diffusion angle different from the diffusion angles of the other two zones; or the multi-zone diffusion angle composite panel includes three diffusion angle zones (left, middle, and right) along the width direction, wherein at least one zone has a diffusion angle different from the diffusion angles of the other two zones; or the multi-zone diffusion angle composite panel includes a total of nine diffusion angle zones, which are divided into three rows (top, middle, and bottom) along the vertical direction and three columns (left, middle, and right) along the width direction, wherein at least one zone has a diffusion angle different from the diffusion angles of the other zones.

[0007] Furthermore, the multi-zone diffusion angle composite plate is made of polycarbonate, polymethyl methacrylate, polystyrene, or methyl methacrylate-styrene copolymer.

[0008] The preferred embodiment of the above scheme is that the various light strips or light panels with unequal mixing distances include direct-lit large mixing distance light strips or light panels with relatively large mixing distances and direct-lit small mixing distance light strips or light panels with relatively small mixing distances. The minimum mixing distance of the direct-lit large mixing distance light strips or light panels is greater than the maximum mixing distance of the direct-lit small mixing distance light strips or light panels. The alternating arrangement of the direct-lit large mixing distance light strips or light panels and the direct-lit small mixing distance light strips or light panels constitutes a multi-mixing composite structure.

[0009] Furthermore, direct-lit large mixing distance light strips or panels include direct-lit large mixing distance light strips or panels with the same mixing distance and / or multiple direct-lit large mixing distance light strips or panels with different mixing distances; direct-lit small mixing distance light strips or panels include direct-lit small mixing distance light strips or panels with the same mixing distance and / or multiple direct-lit small mixing distance light strips or panels with different mixing distances.

[0010] The preferred embodiment of the above scheme is that each ultra-thin LCD module contains multiple direct-lit large-mixing-distance LED strips or LED panels. The distance between the LEDs and the LED strips or LED panels is arranged according to a topology optimization algorithm. The multiple direct-lit large-mixing-distance LED strips or LED panels are evenly or non-uniformly distributed on the upper or lower part of the front side of the back panel, or in other parts except for the locations where direct-lit small-mixing-distance LED strips or LED panels are arranged, according to subjective image quality requirements.

[0011] Furthermore, each ultra-thin LCD module contains multiple direct-lit small-distance light strips or light panels. The distance between the LEDs and the light strips or light panels is arranged according to a topology optimization algorithm. Multiple direct-lit small-distance light strips or light panels are evenly or non-uniformly distributed in the middle of the front side of the back panel or in other parts other than the areas where direct-lit large-distance light strips or light panels are arranged, depending on subjective image quality requirements.

[0012] The preferred embodiment of the above scheme is that both the direct-lit large-mixing-distance light strip or light panel and the direct-lit small-mixing-distance light strip or light panel are controlled by backlight drivers, and the number of zones for the direct-lit large-mixing-distance light strip or light panel and the direct-lit small-mixing-distance light strip or light panel controlled by the backlight driver is one light per zone or multiple lights per zone.

[0013] The liquid crystal display device using the ultra-thin liquid crystal module includes an ultra-thin liquid crystal module, the back of which has a small opening, and a small back cover is attached to the small opening.

[0014] The beneficial effects of this utility model are as follows: The technical solution provided in this application is based on a liquid crystal display panel and a back panel. Combined with the structural feature of reflective paper attached to the inner side of the back panel, the ultra-thin liquid crystal module of this application is constructed by adding optical films, multi-zone optical diffusers, and multi-mixing composite structures. The optical films, multi-zone optical diffusers, and multi-mixing composite structures are then arranged sequentially between the liquid crystal display panel and the back panel with reflective paper attached. Furthermore, the multi-mixing composite structure used includes at least two types of light strips or light panels with unequal mixing distances. The backlight module is reconstructed by using light strips or light panels with various mixing distances in the multi-mixing composite structure. The stepped optical cavity layout is used in conjunction with the back panel design to vertically integrate the power module into the cavity space of the stepped optical cavity backlight module, thereby compressing the overall thickness and effectively improving the user experience and visual appeal. Attached Figure Description

[0015] Figure 1 This is a front view of one embodiment of the ultra-thin liquid crystal module of this utility model;

[0016] Figure 2 This is a side view of Embodiment 1 of the ultra-thin liquid crystal module of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the multi-zone optical diffuser involved in the first embodiment of the ultra-thin liquid crystal module of this utility model;

[0018] Figure 4 This is a front view of Embodiment 2 of the ultra-thin liquid crystal module of this utility model;

[0019] Figure 5 This is a side view of Embodiment 2 of the ultra-thin liquid crystal module of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the multi-zone optical diffuser involved in Embodiment 2 of the ultra-thin liquid crystal module of this utility model.

[0021] The components are labeled as follows: 1. LCD panel; 2. Backplate; 3. Optical film; 4. Multi-zone optical diffuser plate; 5. Direct-lit large mixing distance lamp strip or lamp panel; 6. Direct-lit small mixing distance lamp strip or lamp panel. Detailed Implementation

[0022] like Figures 1-6The present invention provides an ultra-thin LCD module that effectively improves user experience and visual appeal while reducing the overall space of the device. The ultra-thin LCD module includes a liquid crystal display panel 1 and a back panel 2. Reflective paper is attached to the inner side of the back panel 2. The ultra-thin LCD module also includes an optical film 3, a multi-zone optical diffuser plate 4, and a multi-mixing composite structure. The optical film 3, the multi-zone optical diffuser plate 4, and the multi-mixing composite structure are sequentially arranged between the liquid crystal display panel 1 and the back panel 2 with the reflective paper attached. The multi-mixing composite structure includes at least two types of light strips or light panels with unequal mixing distances. The technical solution provided in this application is based on a liquid crystal display panel and a back panel. Combining this with the structural feature of reflective paper affixed to the inner side of the back panel, an ultra-thin liquid crystal module is constructed by adding optical films, multi-zone optical diffusers, and multi-mixing composite structures. These optical films, multi-zone optical diffusers, and multi-mixing composite structures are then sequentially arranged between the liquid crystal display panel and the back panel with reflective paper. Furthermore, the multi-mixing composite structure includes at least two types of lamp strips or panels with unequal mixing distances. This allows for the reconstruction of the backlight module using lamp strips or panels with various mixing distances. A stepped optical cavity layout, combined with the back panel design, vertically integrates the power module into the cavity space of the stepped optical cavity backlight module, achieving overall thickness reduction while effectively improving user experience and visual appeal.

[0023] At this point, the optical film 3 of this application is preferably composed of a composite optical module group, and the multi-zone optical diffuser plate 4 is a multi-zone diffuser angle composite plate that includes at least two diffuser angles with different diffuser angles along the vertical and / or width directions. The preferred division methods of the multi-zone optical diffuser plate 4 include: vertically including three diffuser angle zones (top, middle, and bottom), wherein at least one zone has a diffuser angle different from the other two zones; or the multi-zone diffuser angle composite plate includes three diffuser angle zones (left, middle, and right) along the width direction, wherein at least one zone has a diffuser angle different from the other two zones; or the multi-zone diffuser angle composite plate includes a total of nine diffuser angle zones, divided into three rows (top, middle, and bottom) vertically and three columns (left, middle, and right) along the width direction, wherein at least one zone has a diffuser angle different from the diffuser angles of the other zones. More specifically, the multi-zone diffuser angle composite plate of this application is made of polycarbonate, polymethyl methacrylate, polystyrene, or methyl methacrylate-styrene copolymer.

[0024] Correspondingly, as another important component of this application, the various light strips or light panels with unequal mixing distances in this application include a direct-lit large mixing distance light strip or light panel 5 with a relatively large mixing distance and a direct-lit small mixing distance light strip or light panel 6 with a relatively small mixing distance. The minimum mixing distance of the direct-lit large mixing distance light strip or light panel 5 is greater than the maximum mixing distance of the direct-lit small mixing distance light strip or light panel 6. The alternating arrangement of the direct-lit large mixing distance light strip or light panel 5 and the direct-lit small mixing distance light strip or light panel 6 constitutes a multi-mixing composite structure. The specific arrangement is as follows: the direct-lit large mixing distance light strip or light panel 5 includes direct-lit large mixing distance light strips or light panels with the same mixing distance and / or multiple direct-lit large mixing distance light strips or light panels with different mixing distances; the direct-lit small mixing distance light strip or light panel 6 includes direct-lit small mixing distance light strips or light panels with the same mixing distance and / or multiple direct-lit small mixing distance light strips or light panels with different mixing distances. The detailed layout is as follows: each ultra-thin LCD module contains multiple direct-lit large-distance mixing light strips or light panels 5. The distance between the LEDs and the light strips or light panels is arranged according to a topology optimization algorithm. The multiple direct-lit large-distance mixing light strips or light panels 5 are evenly or non-uniformly distributed on the upper part, lower part, or other parts of the front side of the back panel, except for the arrangement of direct-lit small-distance mixing light strips or light panels 6, according to subjective image quality requirements. Each ultra-thin LCD module contains multiple direct-lit small-distance mixing light strips or light panels 6. The distance between the LEDs and the light strips or light panels is arranged according to a topology optimization algorithm. The multiple direct-lit small-distance mixing light strips or light panels 6 are evenly or non-uniformly distributed on the middle part of the front side of the back panel, or other parts, except for the arrangement of direct-lit large-distance mixing light strips or light panels 5, according to subjective image quality requirements. The preferred arrangement structure is that both the direct-lit large-mixing-distance light strip or light panel 5 and the direct-lit small-mixing-distance light strip or light panel 6 are controlled by backlight drive. The number of zones for the backlight drive-controlled direct-lit large-mixing-distance light strip or light panel 5 and the direct-lit small-mixing-distance light strip or light panel 6 is one light per zone or multiple lights per zone.

[0025] The liquid crystal display device using the ultra-thin liquid crystal module includes an ultra-thin liquid crystal module, the back of which has a small opening, and a small back cover is attached to the small opening.

[0026] In summary, the technical solution provided in this application also has the following advantages:

[0027] This application proposes an innovative solution to address the issues of thickness redundancy and wall-mount compatibility in existing backlight module structures. This solution reconstructs the three-dimensional topology of the backlight module, employing a stepped optical cavity layout combined with a backplate design. The power module is vertically integrated into the cavity space of the stepped optical cavity backlight module, achieving overall thickness reduction. Simultaneously, the backlight utilizes an independent driving circuit group, constructing a high-precision optical zoning system. This structural improvement enhances the wall-mount fit of the device, reduces the overall thickness, and supports multi-zone dynamic backlight control, enabling more precise light regulation. Combined with the characteristics of human vision, this significantly improves the viewing experience. While achieving an ultra-thin industrial design, it also significantly improves the resolution of details in dark areas and the contrast in bright areas, comprehensively solving the technical challenges of achieving both thinner and lighter display devices and higher image quality. By integrating a direct-lit composite backlight architecture with multi-zone optical diffuser technology, three core breakthroughs have been achieved: First, by using differentiated light source configurations, the overall thickness of the LCD display device is effectively reduced, lowering the overall cost. Second, multi-zone driving technology achieves high dynamic contrast, improving image quality, especially in the direct-lit small-mixing-distance lamp strip or lamp panel position, which can achieve more zone effects. Based on the high number of zones, more dynamic effects or new application scenarios can also be developed in this area. Third, the integrated design of the multi-zone optical diffuser makes it possible for light sources with different mixing distances to be used, effectively eliminating lamp shadows in different areas, while significantly reducing the differences in image quality and brightness in splicing areas.

[0028] The technical solution of this application will be further described below through specific embodiments:

[0029] The technical problem this invention aims to solve is to provide a backlight module form for a liquid crystal display device. The key advantages of this form are: ① it reduces the overall thickness of the liquid crystal display device and decreases its distance from the wall when wall-mounted; ② it improves the user experience by using light source technology with different mixing distances and multi-zone technology, and combines this with a specially designed diffuser plate to solve the problem of light uniformity at the junction of light panels with different mixing distances. While achieving an ultra-thin industrial design, it significantly improves the resolution of details in dark areas and the contrast in bright areas, taking into account user viewing habits, thus solving the technical challenges of achieving both thinner and lighter display devices and higher image quality.

[0030] The technical solution to the above technical problems is:

[0031] A novel liquid crystal display module is characterized by comprising the following hierarchical structure: a liquid crystal display panel, an optical film group, a direct-lit composite backlight system, a back panel assembly, and a back cover housing, arranged sequentially from front to back; a reflective film is provided on the front surface of the back panel assembly; the direct-lit composite backlight system includes direct-lit large-mixing-distance lamp strips or lamp panels and direct-lit small-mixing-distance lamp strips or lamp panels, wherein the light source array of the direct-lit large-mixing-distance lamp strips or lamp panels is distributed in a designated area on the front side of the back panel, and its specific position is adjusted according to the position of the direct-lit small-mixing-distance lamp strips or lamp panels; a multi-zone optical diffusion plate is disposed between the optical film group and the composite backlight system, the multi-zone optical diffusion plate comprising three optical functional areas, a first diffusion characteristic layer disposed in the top and bottom areas, and a second diffusion characteristic layer with a larger scattering angle disposed in the central area.

[0032] The direct-lit, large-mixing-distance LED strip or panel light source array adopts a multi-row or multi-column distributed arrangement. The spacing between each LED unit is topologically optimized based on backlight uniformity indicators and visual perception thresholds to achieve brightness balance in the distributed area. Alternatively, the direct-lit, large-mixing-distance LED strip or panel light source array adopts a high-density matrix arrangement. The spacing between each LED unit is dynamically adapted based on HDR display requirements and halo control parameters to ensure optical matching in the area.

[0033] This module adopts a hybrid zoned backlight control architecture, which includes direct-lit large-mixing-distance light strips or light panels and direct-lit small-mixing-distance light strips or light panels. The light source can be controlled independently in a single zone or in a multi-light source collaborative zone. Both control modes must meet the technical indicators of visual perception consistency and halo suppression.

[0034] The multi-zone optical diffuser adopts a three-zone or higher hierarchical structure. Specific implementations include, but are not limited to: a basic three-zone configuration (top / bottom first scattering zone, central zone second scattering zone) architecture; an advanced five-zone configuration (top / bottom first scattering zone, central zone second scattering zone, transition zone third scattering zone) architecture; and a seamless connection architecture between each zone through gradient optical characteristics.

[0035] The materials used to prepare the multi-zone optical diffuser are selected from polycarbonate-based composite materials, polymethyl methacrylate optical grade sheets, styrene-acrylonitrile copolymers or their modified derivatives, ensuring that the multi-zone optical diffuser has high optical transmittance and adjustable haze range.

[0036] The manufacturing process of the multi-zone optical diffuser plate adopts micro-foaming molding technology or screen printing dot microstructure molding technology. The micro-foaming process achieves gradient haze distribution by adjusting the foaming agent concentration in different regions, while the screen printing dot microstructure molding technology achieves regional optical property control through differentiated microstructure density or shape. This integrated molding process effectively eliminates the risk of interface light loss of traditional spliced ​​diffuser plates, can effectively reduce light leakage at module joints, and can effectively improve the subjective differences between the two light source joints.

[0037] The multi-mixing composite structure of this application is characterized by the following: the direct-lit large-mixing-distance light strip or light panel can be a light strip or light panel containing only one type of large-mixing-distance, or it can be a composite light mixing light panel containing multiple types of large-mixing-distance light strips or light panels; the direct-lit small-mixing-distance light strip or light panel can be a light strip or light panel containing only one type of small-mixing-distance, or it can be a composite light mixing light panel containing multiple types of small-mixing-distance light strips or light panels; the specific definition of large and small mixing distances is relative, and a light source with a larger mixing distance than a small mixing distance is a large-mixing-distance light source in this utility model. The overall structure constitutes an innovative combined architecture. Its arrangement is as follows: the direct-lit large-mixing-distance light strips or light panels are flexibly installed along the back panel according to the position of the direct-lit small-mixing-distance light strips or light panels on the front side, wherein the direct-lit small-mixing-distance light strips or light panels form a high-density and high-precision matrix point light source layout through small-size packaging integration technology. This hybrid light source architecture achieves energy efficiency optimization of the backlight system and matches the visual characteristics of the human eye through physical partitioning. The entire direct-lit light source supports dynamic local dimming technology in each area to achieve high image quality requirements.

[0038] The multi-zone optical diffuser plate of this application is characterized by its gradient optical characteristic design, incorporating the synergistic effect of multi-level haze gradients and differentiated diffusion angles. Depending on the practical application, it can be configured such that the upper and lower parts have the same diffusion angle distribution, while the middle part has a different diffusion angle; or the lower part has the same diffusion angle distribution, while the upper part has a different diffusion angle; or other multi-zone methods can be used, but at least two or more angle distribution diffusion methods must be employed. Regardless of the composite method used, a composite optical control structure must be ensured at the junction of the large and small light mixing sources to eliminate subjective differences in the junction zone. In terms of advanced manufacturing processes, the multi-zone optical diffuser plate employs micro-foaming co-extrusion molding technology. A supercritical fluid injection system precisely controls the foaming agent concentration in different zones, combined with nanometer-level control of the mold temperature field, to achieve continuous gradual changes in the internal cell size of the material. An alternative implementation uses digital screen printing, employing a six-axis robotic arm equipped with a micron-level nozzle to construct a differentiated dot structure on the substrate surface. This structure, after UV curing, forms a stable optical interface. Thus, when the optical system is working, the light beam emitted by the light source undergoes initial intensity distribution optimization after passing through the backplate reflective layer. Upon incident on the microstructure interface of the multi-zone diffuser plate, multiple optical effects occur: firstly, angular scattering of the light source in each area reduces edge or dark area effects; secondly, gradual directional zone diffusion is applied at the junction of direct-lit large-mixing-distance light strips or panels and direct-lit small-mixing-distance light strips or panels, eliminating subjective differences at the junction. After the diffuser plate expands the divergence angle and transmits light, combined with the prism brightening film and reflective polarizing film of the composite optical film group, high optical coupling efficiency, color and brightness uniformity are ultimately achieved.

[0039] The light source layout on the front side of the backplate in this application is designed using a topology optimization algorithm: the density arrangement of direct-lit large-mixing-distance LED strips or panels and direct-lit small-mixing-distance LED strips or panels is optimized to meet performance requirements, and a gradient-angle diffusion buffer zone with multi-zone optical diffusers is set in the transition area between the two. This layout scheme has been verified by ray tracing simulation and can effectively eliminate brightness abrupt changes in the transition zone. The optical design of the entire module achieves low cost while meeting the requirements of ultra-thin multi-zone functionality.

[0040] Compared to existing technologies, this application employs a multi-zone light source scheme. The light mixing scheme uses a large-mixing-distance light source A (the aforementioned direct-lit large-mixing-distance light strip or board) and a small-mixing-distance light source B (the aforementioned direct-lit small-mixing-distance light strip or board). Light sources A and B can be conventional LEDs or miniLEDs. This patent places the small-mixing-distance light source B in the middle or top position of the backlight, which has three significant advantages: ① Using two light mixing schemes in the same TV LCD module allows for more space between the small-mixing-distance light board and the back cover to accommodate power boards, motherboards, and other electronic components, effectively reducing the overall thickness; ② ... The back cover design effectively reduces the overall cost and improves assembly efficiency; ③ The advantage of placing the light source B with a small mixing distance in the middle is that the center of the TV is the focal point of the user's vision. When we face the TV, our eyes will naturally look at the center of the screen because most of the content and operations are concentrated in this area. Therefore, the middle part of the TV becomes the most important visual area and has a very high attention to the displayed content. The technical solution of this application takes this into consideration. One solution is to arrange the light source B with a larger number of small mixing distances in the middle strip of the TV back panel. In this way, this area, combined with the software algorithm, has great flexibility in adjusting the image quality to improve the user experience.

[0041] Example 1

[0042] like Figures 1 to 3 As shown, the module adopts a composite backlight architecture, including a liquid crystal display panel, a multi-layer optical thin film assembly, differentiated backlight units, and a precision mechanical support structure. Specifically, from front to back, it is arranged with a liquid crystal display panel, a composite optical film, a multi-zone optical diffuser plate, a direct-lit large-mixing-distance lamp strip or lamp board, a direct-lit small-mixing-distance lamp strip or lamp board, a back plate with reflective function or a back cover with reflective paper, and a back cover.

[0043] The innovative combined architecture comprises direct-lit large-distance mixing light strips or panels and direct-lit small-distance mixing light strips or panels. The direct-lit large-distance mixing light strips or panels are symmetrically distributed along the top and bottom areas of the front side of the back panel, while the direct-lit small-distance mixing light strips or panels are densely arranged in the central area of ​​the back panel using small-size packaging integration technology, forming a high-precision matrix-style point light source layout. This hybrid light source architecture achieves energy efficiency optimization and human visual matching characteristics of the backlight system through physical partitioning. Each area of ​​the entire direct-lit light source supports dynamic local dimming technology to achieve high image quality requirements.

[0044] The core innovative component, the multi-zone optical diffuser plate, adopts a gradient optical characteristic design. Its upper and lower regions use a small-angle diffusion scheme, while the central region is equipped with a composite optical control structure, which includes the synergistic effect of multi-level haze gradients and differentiated diffusion angles.

[0045] Example 2

[0046] like Figures 4 to 6 As shown, this embodiment is largely consistent with the overall concept of Embodiment 1. The main difference is that the direct-lit large-mixing-distance LED strips or panels are distributed in the middle and bottom areas of the front side of the back panel, while the direct-lit small-mixing-distance LED strips or panels are densely arranged in the upper area of ​​the back panel through small-size packaging integration technology, forming a high-precision matrix point light source layout. At the same time, the distribution of the multi-zone optical diffuser plate is different from that in Embodiment 1, with one diffusion method used in the lower middle part and another diffusion method used in the upper part.

Claims

1. An ultra-thin liquid crystal module, comprising a liquid crystal display panel (1) and a back plate (2), wherein reflective paper is affixed to the inner side of the back plate (2), characterized in that: The ultra-thin liquid crystal module further includes an optical film (3), a multi-zone optical diffuser plate (4), and a multi-mixing composite structure. The optical film (3), the multi-zone optical diffuser plate (4), and the multi-mixing composite structure are arranged sequentially between the liquid crystal display panel (1) and the back plate (2) covered with reflective paper. The multi-mixing composite structure includes at least two types of light strips or light panels with unequal mixing distances.

2. The ultra-thin liquid crystal module according to claim 1, characterized in that: The optical film (3) is composed of a composite optical module group, and the multi-zone optical diffusion plate (4) is a multi-zone diffusion angle composite plate that includes at least two diffusion angles with different diffusion angles along the vertical and / or width directions.

3. The ultra-thin liquid crystal module according to claim 2, characterized in that: The multi-zone diffusion angle composite panel includes three diffusion angle zones (top, middle, and bottom) vertically, with at least one zone having a diffusion angle different from the other two zones; or the multi-zone diffusion angle composite panel includes three diffusion angle zones (left, middle, and right) widthwise, with at least one zone having a diffusion angle different from the other two zones; or the multi-zone diffusion angle composite panel includes a total of nine diffusion angle zones, divided into three rows (top, middle, and bottom) vertically and three columns (left, middle, and right) widthwise, with at least one zone having a diffusion angle different from the other zones.

4. The ultra-thin liquid crystal module according to claim 2 or 3, characterized in that: Multi-zone diffusion angle composite panels are made of polycarbonate, polymethyl methacrylate, polystyrene, or methyl methacrylate-styrene copolymer.

5. The ultra-thin liquid crystal module according to claim 4, characterized in that: Among the various light strips or light panels with unequal mixing distances, there are direct-down large mixing distance light strips or light panels (5) with relatively large mixing distances and direct-down small mixing distance light strips or light panels (6) with relatively small mixing distances. The minimum mixing distance of the direct-down large mixing distance light strip or light panel (5) is greater than the maximum mixing distance of the direct-down small mixing distance light strip or light panel (6). The staggered arrangement of the direct-down large mixing distance light strip or light panel (5) and the direct-down small mixing distance light strip or light panel (6) is a multi-mixing composite structure.

6. The ultra-thin liquid crystal module according to claim 5, characterized in that: The direct-lit large mixing distance light strip or light panel (5) includes a direct-lit large mixing distance light strip or light panel (5) with the same mixing distance and / or a variety of direct-lit large mixing distance light strips or light panels (5) with different mixing distances; the direct-lit small mixing distance light strip or light panel (6) includes a direct-lit small mixing distance light strip or light panel (6) with the same mixing distance and / or a variety of direct-lit small mixing distance light strips or light panels (6) with different mixing distances.

7. The ultra-thin liquid crystal module according to claim 6, characterized in that: Each ultra-thin LCD module contains multiple direct-lit large-mixing-distance LED strips or LED panels (5). The distance between the LEDs and the LED strips or LED panels is arranged according to the topology optimization algorithm. Multiple direct-lit large-mixing-distance LED strips or LED panels (5) are evenly or non-uniformly distributed on the upper or lower part of the front side of the back panel, or in other parts except for the locations where direct-lit small-mixing-distance LED strips or LED panels (6) are arranged, according to subjective image quality requirements.

8. The ultra-thin liquid crystal module according to claim 6, characterized in that: Each ultra-thin LCD module contains multiple direct-lit small-distance light strips or light panels (6). The distance between the LEDs and the light strips or light panels is arranged according to the topology optimization algorithm. Multiple direct-lit small-distance light strips or light panels (6) are evenly or non-uniformly distributed in the middle of the front side of the back panel or in other parts except for the locations where direct-lit large-distance light strips or light panels (5) are arranged, according to subjective image quality requirements.

9. The ultra-thin liquid crystal module according to claim 5, characterized in that: Both the direct-lit large-mixing-distance light strip or light panel (5) and the direct-lit small-mixing-distance light strip or light panel (6) are controlled by backlight drive. The number of zones for the direct-lit large-mixing-distance light strip or light panel (5) and the direct-lit small-mixing-distance light strip or light panel (6) controlled by backlight drive is one light per zone or multiple lights per zone.

10. A liquid crystal display device using the ultra-thin liquid crystal module as described in claim 9, characterized in that: This includes an ultra-thin LCD module, which has a small opening on the back and a small back cover attached to the opening.

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