PGU unit

Abstract

The utility model discloses a PGU unit. The PGU unit comprises an LCD panel and a backlight module. The backlight module is used for irradiating the LCD panel to generate a target image. The backlight module comprises a light guide plate, a backlight source, a middle frame and at least one film material which are sequentially arranged. The light guide plate is used for guiding an external light source to the LCD panel after dodging treatment; the backlight source comprises a first backlight source and a second backlight source, the first backlight source and the second backlight source are arranged on the two oppositely-arranged long edges of the light guide plate respectively, and the first backlight source and the second backlight source provide external light sources for the light guide plate respectively; the middle frame accommodates and wraps the peripheral side of the light guide plate, and an accommodating space for accommodating at least one membrane material is formed between the middle frame and the light guide plate. The utility model mainly aims to provide a PGU unit so as to achieve the technical effects that the size of a backlight module is reduced and the backlight module is lighter and thinner while the brightness of light rays projected by the backlight module is improved.

Description

Technical Field

[0001] This utility model relates to the field of HUD, specifically to a PGU unit. Background Technology

[0002] With the continuous development of vehicle technology, increasingly higher demands are being placed on the convenience and safety of vehicle use. For example, head-up displays (HUDs) have been widely used in vehicles. A HUD is a device that projects instrument and / or navigation information into the driver's field of vision. The driver can see the instrument and navigation information directly in front of them without having to look down at the instrument panel or central control display below the steering wheel, thus improving driving safety. The Picture Generation Unit (PGU) is one of the core components of the HUD system, primarily used to generate and project images. The PGU projects information onto a transparent medium in front of the driver, such as the windshield, using optical means, providing important driving information such as vehicle speed and navigation instructions.

[0003] The backlight module within the PGU contains a backlight source. Traditionally, backlights are configured in two ways: direct-lit and edge-lit. Direct-lit backlight modules offer good brightness uniformity and high light utilization, but their disadvantage is a bulky structure, particularly thick, making them unsuitable for products requiring a slim and lightweight design. Edge-lit backlight modules, on the other hand, are slim and lightweight, but suffer from poor brightness uniformity and low light utilization, often resulting in insufficient brightness in the projected image. Therefore, neither direct-lit nor edge-lit backlight modules can simultaneously achieve increased brightness while maintaining a slim and lightweight design for space-saving internal installation.

[0004] Therefore, providing a PGU unit that can improve the brightness of the backlight module's projected light while reducing the size of the backlight module to make it thinner and lighter has become an urgent technical problem to be solved. Utility Model Content

[0005] Based on the above situation, the main purpose of this utility model is to provide a PGU unit that can improve the brightness of the light projected by the backlight module while also reducing the size of the backlight module to make it thinner and lighter.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This utility model embodiment discloses a PGU unit, including: an LCD panel and a backlight module, wherein the backlight module is used to illuminate the LCD panel to generate a target image;

[0008] The backlight module includes a light guide plate, a backlight source, a mid-frame, and at least one film material arranged sequentially.

[0009] The light guide plate is used to guide the light from an external light source to the LCD panel after it has been homogenized.

[0010] The backlight includes a first backlight and a second backlight, which are respectively located on two long sides of the light guide plate that are opposite to each other. The first backlight and the second backlight provide external light sources to the light guide plate respectively.

[0011] The middle frame accommodates and covers the outer periphery of the light guide plate, and a receiving space for accommodating at least one film material is formed between the middle frame and the light guide plate.

[0012] Optionally, the light guide plate is equipped with a mounting plate, which is located at the outer edge of the light guide plate and perpendicular to the light guide plate in the direction toward the middle frame;

[0013] The first and second backlights are located on the side of the mounting plate near the receiving space so that the external light source can illuminate the light guide plate.

[0014] Optionally, the backlight is an LED light strip.

[0015] Optionally, the middle frame consists of a fixed plate and a side plate, the side plate being connected to the outer edge of the fixed plate and perpendicular to the fixed plate in the direction toward the light guide plate;

[0016] The fixing plate and the light guide plate are arranged in parallel, and the side plate and the mounting plate are both located between the fixing plate and the light guide plate. The side plate covers the outside of the mounting plate; the fixing plate, the light guide plate and the mounting plate surround and form an accommodating space.

[0017] Optionally, the middle frame consists of a fixed plate and side plates, with the side plates covering the outside of the mounting plate and set perpendicular to the fixed plate;

[0018] The fixing plate and the light guide plate are set in parallel. The side of the side plate is connected to the outer edge of the fixing plate, and the inner side of the side plate is attached to the light guide plate. The fixing plate, the light guide plate, the side plate and the mounting plate surround and form a receiving space.

[0019] Optionally, the fixing plate is provided with a light outlet, and the fixing plate is located between the LCD panel and the light guide plate;

[0020] At least one membrane material is disposed within the receiving space, at least one membrane material is fixed between the light guide plate and the fixing plate, and the edge of at least one membrane material abuts against the mounting plate;

[0021] The external light emitted by the first and second backlights on the mounting plate is uniformly distributed by the light guide plate, passes through at least one film material, and illuminates the LCD panel through the light outlet.

[0022] Optionally, the mounting plate has several snap-fit ​​parts on one side that is attached to the side panel, and the side panel has several mounting holes. The snap-fit ​​parts are positioned to correspond to the mounting holes, and the snap-fit ​​parts cooperate with the mounting holes to allow the light guide plate to be installed with the middle frame.

[0023] Optionally, the side plate is provided with several notches, which are located on both sides of the mounting holes.

[0024] Optionally, the mounting plate has several protruding connectors on its side edge near the fixing plate, and the fixing plate has several holes. The positions of the connectors and the holes correspond, and the connectors can be inserted into the holes.

[0025] Optionally, the PGU unit also includes a circuit board, which is located on the side of the light guide plate away from the LCD panel. The light guide plate has a first cable pass and a second cable pass arranged side by side. The first cable of the first backlight passes through the first cable pass and is connected to the circuit board, and the second cable of the second backlight passes through the second cable pass and is connected to the circuit board.

[0026] Optionally, the top of the LCD panel is a data driving interface, one end of the pixel data driving cable is connected to the data driving interface, and the other end is connected to the circuit board; the body of the pixel data driving cable is bent downward from one end to the other to form a fixed space; the fixed space covers part of the light guide plate and part of the middle frame. Beneficial effects

[0027] A PGU unit disclosed in this utility model embodiment includes an LCD panel and a backlight module. The LCD panel and the backlight module are arranged adjacent to each other, and the backlight module can project uniform and bright light onto the LCD panel to generate a target image. The backlight module includes a light guide plate, a backlight source, a mid-frame, and at least one film material. To improve the brightness of the light projected by the PGU, this solution uses multiple backlight sources, specifically two backlight sources symmetrically arranged on the two long sides of the light guide plate. In the prior art, traditional backlight modules often use only one backlight source, but this solution uses two, symmetrically arranged on the long sides. This arrangement enhances light brightness, and the longer length of the backlight sources on the long sides of the light guide plate compared to those on the short sides, along with the symmetrical arrangement of the backlight sources, ensures perpendicular light and more uniform light distribution. The backlight structure proposed in this solution achieves both increased light brightness and uniform light distribution. Furthermore, this solution also includes a middle frame, which works in conjunction with the light guide plate to form a storage space. This storage space is similar to a sandwich layer, within which several film materials can be placed, making the overall structure of the backlight module more compact and reducing space requirements. By symmetrically placing a first backlight source and a second backlight source on the long side of the light guide plate, the brightness and uniformity of the light can be improved. The middle frame is installed in conjunction with the light guide plate, covering the outside of the light guide plate. This serves two purposes: firstly, it protects the light guide plate, and secondly, it forms a storage space between them. This storage space can accommodate several film materials placed side by side, making the structure of the backlight module more compact.

[0028] In summary, this solution improves the brightness and uniformity of the light projected onto the LCD panel by adjusting the backlight configuration and the housing space, making the backlight module more compact through the improved housing space.

[0029] Other beneficial effects of this utility model will be explained in detail through the introduction of specific technical features and technical solutions in the specific embodiments. Those skilled in the art should be able to understand the beneficial technical effects brought about by the technical features and technical solutions through the introduction of these technical features and technical solutions. Attached Figure Description

[0030] 10-PGU unit; 100-Backlight module; 110-Light guide plate; 111-Mounting plate; 111a-Snap-in connector; 111b-Plug-in connector; 112-First cable routing port; 113-Second cable routing port; 120-Backlight source; 121-First backlight source; 122-Second backlight source; 123-First ribbon cable; 124-Second ribbon cable; 130-Middle frame; 131-Fixing plate; 131a-Light emission port; 131b-Insertion hole; 132-Side plate; 132a-Mounting hole; 132b-Notch; 140-Film material; 150-Accommodation space; 200-LCD panel; 210-Pixel data drive ribbon cable; 220-Fixing space; 300-Circuit board;

[0031] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. In the drawings:

[0032] Figure 1 This is a schematic diagram of the structure of a PGU unit disclosed in this embodiment;

[0033] Figure 2 This is an exploded view of a PGU unit disclosed in this embodiment;

[0034] Figure 3 This is a schematic diagram of the structure of the light guide plate disclosed in this embodiment;

[0035] Figure 4 This is a schematic diagram of the structure of the middle frame disclosed in this embodiment;

[0036] Figure 5 This is a schematic diagram of the installation structure of the middle frame and the light guide plate disclosed in this embodiment;

[0037] Figure 6 This is a schematic diagram of the installation structure between the middle frame, light guide plate, and film material disclosed in this embodiment;

[0038] Figure 7 This is a schematic diagram showing the installation between the LCD panel, backlight module, and circuit board disclosed in this embodiment. Detailed Implementation

[0039] The present invention will now be described based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail, but well-known methods, processes, procedures, and elements are not described in detail in order to avoid obscuring the essence of the present invention.

[0040] Furthermore, those skilled in the art should understand that the accompanying drawings provided herein are for illustrative purposes only and are not necessarily drawn to scale.

[0041] Unless the context explicitly requires it, the words "comprising," "including," and similar terms throughout the specification and claims should be interpreted as encompassing rather than being exclusive or exhaustive; that is, meaning "including but not limited to."

[0042] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0043] In order to improve the brightness of the light projected by the backlight module 100 while reducing the size of the backlight module 100 to make it thinner and lighter, this embodiment discloses a PGU unit 10. Please refer to [reference needed]. Figure 1 and 2 , Figure 1 This is a schematic diagram of the structure of a PGU unit 10 disclosed in this embodiment. Figure 2 This is an exploded view of a PGU unit 10 disclosed in this embodiment.

[0044] exist Figure 2 As can be seen, the PGU unit 10 includes an LCD panel 200, a backlight module 100, and a circuit board 300. The backlight module 100 is disposed between the LCD panel 200 and the circuit board 300. The backlight module 100 can illuminate the LCD panel 200 and generate a target image. The circuit board 300 provides power and control circuitry for the LCD panel 200 and the backlight module 100.

[0045] The backlight module 100 includes a light guide plate 110, a backlight source 120, a middle frame 130, and multiple films 140 arranged sequentially. The backlight source 120 provides brightness to the backlight module 100. The backlight source 120 is installed in conjunction with the light guide plate 110, which is used to uniformly distribute the light emitted by the backlight source 120. The middle frame 130 is installed in conjunction with the light guide plate 110 to form a receiving space 150. The receiving space 150 is used to accommodate multiple films 140. The films 140 include various types, such as brightness enhancement films and diffusion films. The multiple films 140 are arranged adjacent to each other in the receiving space 150.

[0046] In the prior art, backlight modules 100 typically employ two mounting methods for the backlight source 120: direct-lit and side-lit. Direct-lit backlighting does not require a light guide plate 110 to uniformly illuminate the light, as the backlight source 120 itself emits sufficiently uniform light. However, a drawback of direct-lit backlighting is that the backlight source 120 is positioned vertically along the light direction, resulting in a thicker and heavier structure for the backlight module 100. Side-lit backlighting requires a light guide plate 110 to uniformly illuminate the light, and the emitted light brightness is often insufficient. However, its advantage is that the backlight source 120 is not positioned along the light direction but rather on the side, allowing for a thinner and lighter structure for the backlight module 100. Neither of these existing backlight source 120 mounting methods can simultaneously improve brightness and ensure light uniformity while maintaining a compact and thin backlight module 100.

[0047] This solution addresses the aforementioned problems by providing a first backlight 121 and a second backlight 122 to the backlight 120. Firstly, compared to traditional methods, this increases the number of backlights 120. Secondly, by placing the first backlight 121 and the second backlight 122 on the light guide plate 110, the close proximity of the backlights 120 to the light guide plate 110 allows for better light uniformity. Furthermore, the light guide plate 110 is rectangular, with a long side and a short side in a 4:1 ratio. Placing the first backlight 121 and the second backlight 122 symmetrically on their long sides extends the length of the backlights 120, resulting in brighter light. It also ensures that the first and second backlights 121 and 122 are symmetrically positioned, leading to more uniform light emission from both backlights 120.

[0048] In the prior art, when installing the internal structure of the backlight module 100, screws are often used to tighten each other. Since there are many components inside the backlight module 100, this connection makes the backlight module 100 thicker and heavier, with low internal space utilization and an uncompacted structure.

[0049] This solution addresses the aforementioned issues by incorporating a mid-frame 130 and modifying the fit between the mid-frame 130 and the light guide plate 110 to an encapsulating type. The mid-frame 130 encapsulates the outer periphery of the light guide plate 110, saving space in the direction perpendicular to the light guide plate 110. Furthermore, even after the mid-frame 130 encapsulates the outer periphery of the light guide plate 110, a gap remains between the mid-frame 130 and the light guide plate 110, providing a accommodating space 150. This accommodating space 150 is perfectly suited to accommodate multiple side-by-side film materials 140, resulting in a more compact structure. This design saves space, making the backlight module 100 thinner and lighter, while also securing the film materials 140, further enhancing the compactness of the structure.

[0050] According to the PGU unit 10 disclosed in this embodiment of the present invention, its internal backlight module 100, on the one hand, adds a backlight source 120 to increase brightness compared to the prior art, and also uses a symmetrical arrangement method to uniformly distribute light. Furthermore, by placing the backlight source 120 on the long side, the length that can be placed can be increased, effectively achieving the effects of increasing brightness and uniform light distribution. On the other hand, the middle frame 130 and the light guide plate 110 cooperate to form a receiving space 150. Multiple films 140 placed side-by-side can be placed within the receiving space 150. The films 140 are covered by the light guide plate 110 and the middle frame 130 within the receiving space 150, making the structure of the backlight module 100 more compact. Therefore, in summary, this solution can improve light brightness and maintain light uniformity while also making the entire backlight module 100 compact, thinner, and more space-saving.

[0051] In an optional embodiment, see Figure 3 A mounting plate 111 is provided on the outer periphery of the light guide plate 110. The mounting plate 111 is located on the outer edge of the light guide plate 110 and is perpendicular to the light guide plate 110. The mounting plate 111 is located on the side close to the middle frame 130. The mounting plate 111 is provided for two purposes: firstly, to install the light guide plate 110 with the middle frame 130 through the mounting plate 111; and secondly, to install the backlight 120.

[0052] The backlight 120 requires the light guide plate 110 to uniformly process the light it emits. Therefore, the backlight 120 needs to be positioned so that it can illuminate the light guide plate 110. If the backlight 120 is directly placed on the light guide plate 110, it's equivalent to the light guide plate 110 being behind the backlight 120, and it cannot effectively receive the light emitted by the backlight 120. Therefore, the backlight 120 is placed on the mounting plate 111, and the mounting plate 111 is close to the light guide plate 110, or in other words, the mounting plate 111 is close to the side of the receiving space 150, so that the backlight 120 can just illuminate the light guide plate 110.

[0053] Furthermore, the first backlight 121 and the second backlight 122 are respectively mounted on symmetrical mounting plates 111, and the light emitted by the two backlights 120 to opposite sides can make the light more uniform.

[0054] Setting the backlight 120 on the mounting plate 111 has another advantage: the mounting plate 111 can act as a side to effectively block the light emitted by the backlight 120, preventing the light from shining away from the light guide plate 110 or the accommodating space 150, while also ensuring brightness.

[0055] According to the embodiments of the present invention, a mounting plate 111 is installed on the light guide plate 110, and a backlight 120 is installed on the mounting plate 111. The backlight 120 is installed on the mounting plate 111, which enables more light from the backlight 120 to illuminate the light guide plate 110, makes the light more uniform, and ensures the brightness of the light illumination.

[0056] In an optional embodiment, the backlight 120 is an LED light strip. To further prevent the light from shining outward, a baffle is provided between the LED light strip and the mounting plate 111 to block the light from the LED.

[0057] In an optional embodiment, see Figure 4 The middle frame 130 is provided with a fixing plate 131 and a side plate 132. The side plate 132 is disposed along the outer periphery of the fixing plate 131 and is perpendicular to the fixing plate 131. The side edge of the side plate 132 is connected to the outer edge of the fixing plate 132. The side plate 132 is disposed on the side near the light guide plate 110. See Figure 5 The middle frame 130 can be fitted onto the outer periphery of the light guide plate 110, and the inner side of the side plate 132 is attached to the light guide plate 110, specifically to the mounting plate 111 on the light guide plate 110, so that the middle frame 130 covers the light guide plate 110. The fixing plate 131 on the middle frame 130 is arranged parallel to the light guide plate 110, and the side plate 132 on the middle frame 130 is fitted onto the outer side of the mounting plate 111, with the side plate 132 and the mounting plate 111 in contact.

[0058] See Figure 5 After the middle frame 130 and the light guide plate 110 are installed together, a receiving space 150 is formed. The fixing plate 131 on the middle frame 130 is for cooperating with the light guide plate 110. When the middle frame 130 and the light guide plate 110 are installed, a receiving space 150 is formed between the fixing plate 131 and the light guide plate 110 to accommodate the film material 140. The side plate 132 on the middle frame 130 is for mounting with the light guide plate 110. The side plate 132 covers the outside of the mounting plate 111, which can both protect the light guide plate 110 and realize the installation.

[0059] Further, see Figure 6 The internal space and size of the accommodating space 150 are matched with the size and shape of the membrane material 140, so that the membrane material 140 can be precisely inserted between the middle frame 130 and the light guide plate 110, that is, installed within the accommodating space 150. After the membrane material 140 is installed in the accommodating space 150, its two sides are respectively attached to the fixing plate 131 and the light guide plate 110, and its edges abut against the mounting plate 111, so that the membrane material 140 can be firmly installed within the accommodating space 150, achieving a stable installation and a compact structure.

[0060] It is worth noting that the fixing plate 131 is also provided with a light-emitting port 131a, which is rectangular and located in the center of the fixing plate 131. After the internal structure of the backlight module 100 is installed, the backlight source 120 illuminates the light, the light guide plate 110 homogenizes the light, and the light passes through at least one film material 140 placed in the receiving space 150, passes through the light-emitting port 131a, and finally illuminates the LCD panel 200. The light-emitting port 131a on the fixing plate 131 is to enable light to pass through the backlight module 100 and illuminate the LCD panel 200.

[0061] According to the embodiments of this utility model, the cooperation between the middle frame 130 and the light guide plate 110 forms a receiving space 150. After the film material 140 is placed in the receiving space 150, light can only illuminate the LCD panel 200 after passing through the film material 140 and the light outlet 131a on the fixing plate 131. This solution takes into account the problem of providing a receiving space 150 to place the film material 140, making the structure more compact. Furthermore, the larger light outlet 131a also allows most of the light emitted by the backlight 120 to be projected onto the LCD panel 200, thereby improving the brightness of the projected light.

[0062] See Figure 3 and 4 In an optional embodiment, to facilitate the installation of the middle frame 130 and the light guide plate 110, a snap-fit ​​element 111a is provided on the outer surface of the mounting plate 111 on the light guide plate 110, and a mounting hole 132a is provided on the side plate 132. Specifically, the snap-fit ​​element 111a is a small protrusion, and the mounting hole 132a is a through hole. During installation, simply inserting the corresponding protrusion into the mounting hole 132a connects the light guide plate 110 and the middle frame 130. This connection method is simple, convenient, and efficient, facilitating assembly by workers.

[0063] Furthermore, since the middle frame 130 is a rectangular frame, when the protrusion is installed into the mounting hole 132a, excessive force may be applied during installation, potentially causing deformation of the middle frame 130. Therefore, this design incorporates a notch 132b. The opening of the notch 132b faces the light guide plate 110, and the notch 132b is positioned on both sides of the mounting hole 132a. This allows the side plate 132 between the two opposing notches 132b to deform when the protrusion is installed into the mounting hole 132a, facilitating the smooth installation of the protrusion into the mounting hole 132a. Additionally, it is preferable that the notches 132b are positioned on the two opposing side plates 132, making installation easier and providing sufficient deformation allowance for the entire middle frame 130. This design is more flexible, with notches 132b provided on both the two opposing short side plates 132 and the bottom side plate 132.

[0064] Furthermore, to prevent insecure installation between the snap-fit ​​connector 111a and the mounting hole 132a, this solution also includes a plug connector 111b and a socket 131b. The plug connector 111b is located on the mounting plate 111, specifically on the side edge near the fixing plate 131, protruding towards the fixing plate 131; the socket 131b is located on the fixing plate 131, corresponding to the position of the plug connector 111b. The plug connector 111b and the differential lock are used to further stabilize the installation between the light guide plate 110 and the middle frame 130, and also to facilitate positioning during installation.

[0065] The snap-fit ​​connector 111a and mounting hole 132a, the plug connector 111b and insertion hole 131b, and the notch 132b disclosed in the embodiments of this utility model are all for facilitating the installation of the middle frame 130 and the light guide plate 110, and ensuring a firm connection between the middle frame 130 and the light guide plate 110. Compared with the nut and screw connection method, this connection method saves space and installation time, and is more convenient to install.

[0066] In an optional embodiment, see Figure 7 The LED light, which serves as the backlight 120, needs to be connected to the circuit board 300 to turn the light on and off. Therefore, a first ribbon cable 123 and a second ribbon cable 124 are needed to connect the LED and the circuit board 300. To facilitate connection, a first cable pass 112 and a second cable pass 113 are provided side by side on the light guide plate 110. The first cable pass 112 and the second cable pass 113 are located on the side closest to the light guide plate 110. The first ribbon cable 123 is led out from the first backlight 121, passes through the first cable pass 112 and connects to the circuit board 300. The second ribbon cable 124 is led out from the second backlight 122, passes through the second cable pass 113 and connects to the circuit board 300.

[0067] The data driving interface of the LCD panel 200 is located at the top of the LCD panel 200. The pixel data driving cable 210 has one end connected to the data driving interface and the other end connected to the circuit board 300. The body of the pixel data driving cable 210 is bent downward from one end to the other to form a fixed space 220. The fixed space 220 covers part of the light guide plate 110 and part of the middle frame 130. In this embodiment, the pixel data driving cable 210 is used to connect the LCD panel 200 and the circuit board 300, which saves space. A fixed space 220 is formed between one end of the pixel data driving cable 210 and the other end by bending. This fixed space 220 can accommodate a portion of the light guide plate 110 and a portion of the middle frame 130, that is, it can cover the top of a portion of the light guide plate 110 and the middle frame 130, thereby preventing misalignment of the various components / parts stacked between the LCD panel 200 and the main control circuit board 300. In other words, the pixel data driving cable 210 achieves the limiting of the various components / parts stacked between the LCD panel 200 and the circuit board 300. This saves space and protects the stacked components.

[0068] In a specific embodiment, please refer to Figure 7 The circuit board 300 has a cable guide groove. The other end of the pixel data drive cable 210 passes through the cable guide groove and connects to the main control circuit board 300, so that the pixel data drive cable 210 provides clamping force to the light guide plate 110 and the middle frame 130 through one end and the other end. The circuit board 300 is generally fixed to the PGU housing by screws or other means. In this embodiment, after the pixel data drive cable 210 passes through the cable guide groove, it can provide clamping force to the bent fixing space 220 through the circuit board 300. This allows the LCD panel 200 and the stacked devices / components between it and the circuit board 300 to be better limited by the bent fixing space 220, thereby better ensuring the tight stacking of the stacked devices / components.

[0069] It will be understood by those skilled in the art that the above-described preferred solutions can be freely combined and superimposed without conflict. The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings; for example, two consecutively indicated blocks may actually be executed substantially in parallel, or sometimes in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions. The numbering of each step in this document is for ease of explanation and reference only and is not intended to limit the order of execution. The specific execution order is determined by the technology itself, and those skilled in the art can determine various permissible and reasonable orders based on the technology itself.

[0070] Those skilled in the art will understand that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0071] It should be understood that the above-described embodiments are merely exemplary and not restrictive. Without departing from the basic principles of this utility model, any obvious or equivalent modifications or substitutions made by those skilled in the art regarding the above details will be included within the scope of the claims of this utility model.

Claims

1. A PGU unit, characterized in that, include: An LCD panel (200) and a backlight module (100), the backlight module (100) being used to illuminate the LCD panel (200) to generate a target image; The backlight module (100) includes a light guide plate (110), a backlight source (120), a middle frame (130), and at least one film material (140) arranged in sequence. The light guide plate (110) is used to guide the external light source to the LCD panel (200) after it has been homogenized. The backlight (120) includes a first backlight (121) and a second backlight (122). The first backlight (121) and the second backlight (122) are respectively disposed on two long sides of the light guide plate (110) that are opposite to each other. The first backlight (121) and the second backlight (122) respectively provide the external light source to the light guide plate (110). The middle frame (130) accommodates and covers the outer periphery of the light guide plate (110), and a receiving space (150) for accommodating at least one of the film materials (140) is formed between the middle frame (130) and the light guide plate (110).

2. The PGU unit according to claim 1, characterized in that, The light guide plate (110) is provided with a mounting plate (111), which is located on the outer edge of the light guide plate (110) and perpendicular to the light guide plate (110) in the direction toward the middle frame (130); The first backlight (121) and the second backlight (122) are disposed on the mounting plate (111) on the side near the receiving space (150) so that the external light source illuminates the light guide plate (110).

3. The PGU unit according to claim 1, characterized in that, The backlight (120) is an LED light strip.

4. The PGU unit according to claim 2, characterized in that, The middle frame (130) is composed of a fixing plate (131) and a side plate (132). The side plate (132) covers the outside of the mounting plate (111) and is arranged perpendicularly to the fixing plate (131). The fixing plate (131) is arranged parallel to the light guide plate (110), the side of the side plate (132) is connected to the outer edge of the fixing plate (131), the inner side of the side plate (132) is in contact with the light guide plate (110), and the fixing plate (131), the light guide plate (110), the side plate (132) and the mounting plate (111) surround to form the receiving space (150).

5. The PGU unit according to claim 4, characterized in that, The fixing plate (131) is provided with a light outlet (131a), and the fixing plate (131) is located between the LCD panel (200) and the light guide plate (110); At least one of the membrane materials (140) is disposed within the receiving space (150), at least one of the membrane materials (140) is fixed between the light guide plate (110) and the fixing plate (131), and the edge of at least one of the membrane materials (140) abuts against the mounting plate (111); The external light emitted by the first backlight (121) and the second backlight (122) on the mounting plate (111) is uniformly distributed by the light guide plate (110), passes through at least one of the film materials (140), and illuminates the LCD panel (200) through the light outlet (131a).

6. The PGU unit according to claim 4, characterized in that, The mounting plate (111) has a plurality of snap-fit ​​pieces (111a) attached to one side of the side plate (132), and the side plate (132) has a plurality of mounting holes (132a). The snap-fit ​​pieces (111a) are positioned corresponding to the mounting holes (132a), and the snap-fit ​​pieces (111a) cooperate with the mounting holes (132a) to allow the light guide plate (110) to be installed in conjunction with the middle frame (130).

7. The PGU unit according to claim 6, characterized in that, The side plate (132) is provided with a plurality of notches (132b), which are located on both sides of the mounting hole (132a).

8. The PGU unit according to claim 4, characterized in that, The mounting plate (111) has several protruding plugs (111b) on its side edge near the fixing plate (131), and the fixing plate (131) has several holes (131b). The plugs (111b) are positioned corresponding to the holes (131b), and the plugs (111b) can be inserted into the holes (131b).

9. The PGU unit according to any one of claims 1-8, characterized in that, The PGU unit (10) also includes a circuit board (300), which is located on the side of the light guide plate (110) away from the LCD panel (200). The light guide plate (110) has a first cable pass (112) and a second cable pass (113) arranged side by side. The first ribbon cable (123) of the first backlight (121) passes through the first cable pass (112) and is connected to the circuit board (300). The second ribbon cable (124) of the second backlight (122) passes through the second cable pass (113) and is connected to the circuit board (300).

10. The PGU unit according to claim 9, characterized in that, The top of the LCD panel (200) is a data driving interface. One end of the pixel data driving cable (210) is connected to the data driving interface, and the other end is connected to the circuit board (300). The body of the pixel data driving cable (210) is bent downward from one end to the other end to form a fixed space (220). The fixed space (220) covers part of the light guide plate (110) and part of the middle frame (130).

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