A display system

Abstract

The utility model relates to a kind of display systems, including liquid crystal display module, and the backlight module located in the liquid crystal display module side, the backlight module includes substrate, and multiple light emitting units are arranged in array on the substrate, the light emitting unit includes at least one red light LED chip, at least one green light LED chip and at least one blue light LED chip, the liquid crystal display module includes transparent pixel layer, the transparent pixel layer includes arrayed pixel unit, interval is set between adjacent the pixel unit, the light emitting unit emits light to pass through the transparent pixel layer and realizes the luminance display of the liquid crystal display module.The display system designed in the utility model can improve the luminance and resolution of display.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a display system. Background Technology

[0002] With the development of display technology, the requirements for brightness and resolution are becoming increasingly stringent. Liquid crystal displays (LCDs) adjust the transmittance of the backlight by controlling the orientation of liquid crystal molecules, thereby displaying images. Traditional LCDs typically use white LEDs as the backlight and achieve RGB three-primary-color display through color filters. However, this method suffers from low light energy utilization (the color filter absorbs about 2 / 3 of the light energy), and because three sub-pixels (red, green, and blue) need to be combined into one pixel, the actual number of displayed pixels is only 1 / 3 of the sub-pixels on the display panel, resulting in a lower display resolution. Utility Model Content

[0003] In view of the above-mentioned problems, the purpose of this utility model is to design a display system that improves the brightness and resolution of the display.

[0004] The objective of this utility model is achieved through the following technical solution: Design a display system including a liquid crystal display module and a backlight module located on one side of the liquid crystal display module. The backlight module includes a substrate and a plurality of light-emitting units arranged in an array on the substrate. The light-emitting units include at least one red LED chip, at least one green LED chip, and at least one blue LED chip. The liquid crystal display module includes a transparent pixel layer, which includes pixel units arranged in an array. Adjacent pixel units are spaced apart. The light emitted by the light-emitting units passes through the transparent pixel layer to achieve the brightness display of the liquid crystal display module.

[0005] In this solution, the backlight module uses red, green, and blue LED chips as the backlight source, achieving pure color backlighting through high-frequency switching. The LCD module employs a transparent pixel layer to improve light transmittance, thereby enhancing display brightness. By synchronizing backlight switching with the display frame and utilizing the persistence of vision, the three colors R, G, and B are displayed sequentially within a very short time. Red, green, and blue images are displayed separately in each display cycle, ultimately merging into a single complete color pixel by the human eye. This is equivalent to stacking three sequentially colored pixels into a virtual colored pixel, thus improving resolution. Furthermore, the spacing between adjacent pixel units reduces light crosstalk between them, preventing color aliasing and further ensuring precise projection of monochromatic light onto the corresponding pixel, improving display contrast and color purity.

[0006] Furthermore, the liquid crystal display module further includes a first glass substrate, a second glass substrate disposed opposite to each other, and a liquid crystal layer located between the first glass substrate and the second glass substrate, wherein the transparent pixel layer is located between the first glass substrate and the liquid crystal layer.

[0007] In this design, a first glass substrate and a second glass substrate sandwich the liquid crystal layer while maintaining precise cell spacing. The first glass substrate supports the transparent pixel layer, while the second glass substrate fixes the thin-film transistor (TFT) array, together forming a stable display structure. The glass substrates must possess excellent optical transparency to ensure uniform light transmission from the light-emitting units and prevent image dimming and color distortion caused by light scattering or absorption. The second glass substrate is fabricated with transparent conductive electrodes (ITO film) and TFT circuitry using photolithography to control the orientation of liquid crystal molecules in the liquid crystal layer. Its surface requires precise etching of an alignment film to guide the oriented alignment of the liquid crystal molecules.

[0008] Furthermore, a spacer is vertically disposed between the first glass substrate and the second glass substrate. One end of the spacer abuts against the second glass substrate, and the other end passes through the gap between adjacent pixel units and abuts against the first glass substrate.

[0009] In this scheme, the spacer acts as a vertical rigid support, which evenly distributes external pressure and reduces the risk of glass substrate deformation. At the same time, the spacer fills the gaps between pixel units, blocks the optical path crossing of adjacent pixels, and reduces optical crosstalk.

[0010] Furthermore, the liquid crystal display module also includes a first polarizer and a second polarizer, wherein the first polarizer is disposed on the side of the first glass substrate away from the liquid crystal layer, and the second polarizer is disposed on the side of the second glass substrate facing the backlight module.

[0011] In this design, the second polarizer is located between the second glass substrate and the backlight module. It converts the unpolarized natural light emitted by the light-emitting unit into unidirectional polarized light, eliminating stray light interference and improving backlight utilization. The polarization direction of the first polarizer is perpendicular to that of the second polarizer. It resolves the polarized light modulated by the liquid crystal layer, forming bright and dark pixels through transmission / blocking. When no voltage is applied to the liquid crystal, the light rotates 90° after passing through the liquid crystal and aligns with the direction of the first polarizer, allowing light to pass through and resulting in a bright screen. When voltage is applied to the liquid crystal, the polarization direction of the light remains unchanged and is perpendicular to the first polarizer, blocking the light and resulting in a dark screen.

[0012] Furthermore, a driving unit is provided on the substrate, and the driving unit is electrically connected to the light-emitting unit for adjusting the brightness of the red LED chip, the green LED chip and the blue LED chip.

[0013] In this solution, the red, green, and blue LED chips are independently switched at high frequency by a driving unit to achieve time-division pure color backlighting. By controlling the transmittance of the pixel unit, the backlight color is matched, and each backlight switch corresponds to a "monochrome image". A complete color pixel is synthesized through three switches (R→G→B), and a continuous image is formed by utilizing the persistence of vision in the human eye.

[0014] Furthermore, the backlight module also includes a back plate, a reflective sheet attached to the back plate, a light guide plate located above the reflective sheet, and an optical film group disposed between the light guide plate and the liquid crystal display module. The substrate is disposed on the back plate, and the light emitted by the light-emitting unit passes through the light guide plate and the optical film group and enters the liquid crystal display module.

[0015] In this design, a reflective sheet reflects light leaking from the side or back of the light-emitting unit to the optical film assembly, reducing light loss and enhancing overall brightness output. Components such as the brightness enhancement film and diffusion film in the optical film assembly further converge and homogenize the light, ensuring the LCD module receives a uniform and high-intensity light source, thus improving screen clarity and color performance. Simultaneously, the optical film assembly utilizes diffusion and polarization optical properties to ensure a more uniform spatial distribution of light, effectively eliminating uneven brightness in the LCD module. The backplate serves as the basic support structure, providing a stable mounting platform for the reflective sheet, optical film assembly, and substrate.

[0016] Furthermore, the light-emitting unit is located below the light guide plate facing the reflective sheet, forming a direct-lit backlight module.

[0017] In this design, the light-emitting units are located below the light guide plate and are designed with reflective sheets. The microstructure of the light guide plate can evenly diffuse light to the entire display area. Combined with the secondary light homogenization processing of the optical film group, the brightness difference between the screen edge and center is significantly reduced. The direct-lit layout allows for a higher density of light-emitting units. With the efficient light transmission of the light guide plate, it can achieve more than 128% NTSC color gamut coverage, improving the color saturation and realism of the image.

[0018] Furthermore, the light-emitting unit is located on the side of the light guide plate perpendicular to the reflective sheet, forming a side-lit backlight module.

[0019] In this solution, the light-emitting unit is located on the side of the light guide plate. The surface light source conversion is achieved through single-sided light source conduction, saving back space and eliminating the need to set a large area of ​​light source on the back, which can reduce the thickness of the backlight module by 30%-50%.

[0020] Compared with the prior art, the beneficial effects of this utility model are: In this solution, the backlight module uses red, green, and blue LED chips as the backlight source, achieving pure color backlighting through high-frequency switching. The LCD module employs a transparent pixel layer to improve light transmittance, thereby enhancing display brightness. By synchronizing backlight switching with the display frame and utilizing the persistence of vision, the three colors R, G, and B are displayed sequentially within a very short time. Red, green, and blue images are displayed separately in each display cycle, ultimately merging into a single complete color pixel by the human eye. This is equivalent to stacking three sequentially colored pixels into a virtual colored pixel, thus improving resolution. Furthermore, the spacing between adjacent pixel units reduces light crosstalk between them, preventing color aliasing and further ensuring precise projection of monochromatic light onto the corresponding pixel, improving display contrast and color purity. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a display system according to an embodiment of the present invention. Figure 1 .

[0022] Figure 2 This is a schematic diagram of the structure of a transparent pixel layer according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of a light-emitting unit according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of a display system according to an embodiment of the present invention. Figure 2 .

[0025] Illustrations: 1. Liquid crystal display module; 11. First polarizer; 12. First glass substrate; 13. Transparent pixel layer; 131. Pixel unit; 14. Liquid crystal layer; 141. Spacer; 15. Second glass substrate; 16. Second polarizer; 2. Backlight module; 21. Back plate; 22. Substrate; 23. Reflective sheet; 24. Light guide plate; 25. Optical film group; 221. Light-emitting unit; 2211. Red LED chip; 2212. Green LED chip; 2213. Blue LED chip. Detailed Implementation

[0026] To facilitate understanding of this invention, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, this invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0027] like Figure 1 and Figure 4As shown, this embodiment provides a display system, including a liquid crystal display module 1 and a backlight module 2 located on one side of the liquid crystal display module 1. The brightness of the liquid crystal display module 1 is displayed by the light source provided by the backlight module 2.

[0028] like Figure 1 and Figure 2 As shown, the liquid crystal display module 1 includes a first glass substrate 12, a second glass substrate 15 disposed opposite to each other, and a liquid crystal layer 14 located between the first glass substrate 12 and the second glass substrate 15. A transparent pixel layer 13 is disposed between the first glass substrate 12 and the liquid crystal layer 14. The transparent pixel layer 13 is attached to the first glass substrate 12 and includes pixel units 131 arranged in an array, with adjacent pixel units 131 spaced apart. It should be noted that the pixel units 131 are made of transparent resin, have a rectangular structure, and are coated on the first glass substrate 12. The first glass substrate 12 and the second glass substrate 15 sandwich the liquid crystal layer and maintain precise unit spacing. The first glass substrate 12 carries the transparent pixel layer 13, and the second glass substrate 15 fixes the thin-film transistor (TFT) array, together forming a stable display structure. The first glass substrate 12 and the second glass substrate 15 need to have excellent optical transparency to ensure that the light from the backlight module 2 passes through uniformly and to avoid dim images and color distortion caused by light scattering or absorption. The second glass substrate 15 is fabricated with transparent conductive electrodes (ITO film) and TFT circuits through photolithography to control the orientation of liquid crystal molecules in the liquid crystal layer 14. Its surface needs to be precisely etched with an alignment film to guide the liquid crystal molecules to oriented.

[0029] Furthermore, a spacer 141 is vertically disposed between the first glass substrate 12 and the second glass substrate 15. One end of the spacer 141 abuts against the second glass substrate 15, and the other end passes through the gap between adjacent pixel units 131 and abuts against the first glass substrate 12. The spacer 141 acts as a vertical rigid support, evenly distributing external pressure and reducing the risk of glass substrate deformation. At the same time, the spacer 141 fills the gap between pixel units 131, blocking the optical path crossing of adjacent pixels and reducing optical crosstalk.

[0030] Furthermore, the liquid crystal display module 1 also includes a first polarizer 11 and a second polarizer 16. The first polarizer 11 is disposed on the side of the first glass substrate 12 facing away from the liquid crystal layer 14, and the second polarizer 16 is disposed on the side of the second glass substrate 15 facing the backlight module 2. The second polarizer 16 is located between the second glass substrate 15 and the backlight module 2, and is used to convert the unpolarized natural light emitted by the backlight module 2 into unidirectional polarized light, eliminate stray light interference, and improve the utilization rate of the backlight. The polarization direction of the first polarizer 11 is perpendicular to the polarization direction of the second polarizer 16, and it resolves the polarized light modulated by the liquid crystal layer, forming bright and dark pixels through transmission / blocking. When no voltage is applied to the liquid crystal, the light is rotated 90° by the liquid crystal and is aligned with the direction of the first polarizer 11, so the light passes through and the screen is bright; when voltage is applied to the liquid crystal, the polarization direction of the light remains unchanged and is perpendicular to the first polarizer 11, so the light is blocked and the screen is dark.

[0031] like Figure 1 and Figure 3 As shown, the backlight module 2 includes a back plate 21, a reflective sheet 23 attached to the back plate 21, a light guide plate 24 located above the reflective sheet 23, an optical film assembly 25 disposed between the light guide plate 24 and the liquid crystal display module 1, and a substrate 22 disposed on the back plate. A plurality of light-emitting units 221 are arranged in an array on the substrate 22. Each light-emitting unit 221 includes at least one red LED chip 2211, at least one green LED chip 2212, and at least one blue LED chip 2213. The light emitted by the light-emitting units 221 passes through the optical film assembly 25 and enters the liquid crystal display module. The light passes through the transparent pixel layer 13 to achieve brightness display of the liquid crystal display module 1. In this embodiment, each light-emitting unit 221 includes a red LED chip 2211, a green LED chip 2212, and a blue LED chip 2213. These chips are attached to the substrate 22 via a surface mount method and connected to the circuitry on the substrate 22. A driving unit is provided on the substrate 22, electrically connected to the light-emitting unit 221, and used to adjust the brightness of the red LED chip 2211, green LED chip 2212, and blue LED chip 2213. The driving unit enables independent high-frequency switching of the red LED chip 2211, green LED chip 2212, and blue LED chip 2213, achieving time-division multiplexing of the pure color backlight. By controlling the transmittance of the pixel unit 131, the backlight color is matched. Each backlight switch corresponds to one "monochrome image," and a complete color pixel is synthesized through three switching operations (R→G→B), utilizing the persistence of vision effect to form a continuous image.

[0032] The reflector 23 reflects light leaking from the side or back of the light-emitting unit 221 to the optical film assembly 25, reducing light loss and enhancing overall brightness output. The brightness enhancement film, diffuser film, and other components in the optical film assembly 25 further converge and homogenize the light, ensuring that the liquid crystal display module 1 receives a uniform and high-intensity light source, improving screen clarity and color performance. Simultaneously, the optical film assembly 25, through its diffusion and polarization optical properties, makes the light distribution more uniform in space, effectively eliminating uneven brightness in the liquid crystal display module 1. The backplate 21 serves as the basic support structure, providing a stable mounting platform for the reflector 23, optical film assembly 25, and substrate 22. It should be noted that the optical film assembly 25 includes diffuser films, brightness enhancement films, etc., stacked sequentially from bottom to top. The diffuser film converts point or line light sources into uniform surface light sources, eliminating bright spots and dark areas, and reducing light interference caused by high-frequency switching during time-division backlight switching. The brightness enhancement film converges light through a microprism structure, enhancing front brightness. The number of diffusion films and brightness enhancement films is set according to actual needs. In this embodiment, one diffusion film and two brightness enhancement films are used. Of course, composite functional films can also be used, which integrate the functions of diffusion films and brightness enhancement films, thereby reducing the number of film layers and thus reducing the backlight thickness.

[0033] like Figure 1 As shown, the light-emitting unit 221 can be positioned below the light guide plate 24 facing the reflector 23, forming a direct-lit backlight module. The light-emitting unit 221, located below the light guide plate 24 and designed in conjunction with the reflector 23, can evenly diffuse light across the entire display area through the microstructure of the light guide plate 24. Combined with the secondary light homogenization processing of the optical film group 25, the brightness difference between the screen edge and center is significantly reduced. The direct-lit layout allows for a higher density of light-emitting units, and with the efficient light transmission of the light guide plate 24, it can achieve over 128% NTSC color gamut coverage, improving the color saturation and realism of the image.

[0034] Other, such as Figure 4 As shown, the light-emitting unit 221 can also be disposed on the side of the light guide plate 24 perpendicular to the reflector 23 to form a side-lit backlight module. The light-emitting unit 221 is located on the side of the light guide plate 24, and the surface light source conversion is achieved through single-sided light source conduction, saving back space and eliminating the need to set a large area of ​​light source on the back, which can reduce the thickness of the backlight module by 30%-50%.

[0035] In this embodiment, the backlight module 2 uses red, green, and blue LED chips as the backlight source, achieving pure color backlighting through high-frequency switching. The liquid crystal display module 1 uses a transparent pixel layer 13 to improve light transmittance, thereby enhancing display brightness. A Sync signal is used for control, synchronizing backlight switching with display frame switching. Utilizing the persistence of vision, the three colors R, G, and B are displayed sequentially within a very short time. Red, green, and blue images are displayed separately in each display cycle, ultimately merging into a complete color pixel by the human eye. This is equivalent to stacking three sequentially colored pixels into a virtual colored pixel, thus improving resolution. Furthermore, the spacing between adjacent pixel units 131 reduces light crosstalk between them, preventing color aliasing and further ensuring accurate projection of monochromatic light onto the corresponding pixel, improving display contrast and color purity.

[0036] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, the inclusion of "first," "second," etc., in a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A display system comprising a liquid crystal display module and a backlight module located on one side of the liquid crystal display module, characterized in that, The backlight module includes a substrate and a plurality of light-emitting units arranged in an array on the substrate. The light-emitting units include at least one red LED chip, at least one green LED chip and at least one blue LED chip. The liquid crystal display module includes a transparent pixel layer, which includes pixel units arranged in an array. Adjacent pixel units are spaced apart. The light emitted by the light-emitting units passes through the transparent pixel layer to achieve the brightness display of the liquid crystal display module.

2. The display system according to claim 1, characterized in that, The liquid crystal display module further includes a first glass substrate, a second glass substrate disposed opposite to each other, and a liquid crystal layer located between the first glass substrate and the second glass substrate, wherein the transparent pixel layer is located between the first glass substrate and the liquid crystal layer.

3. The display system according to claim 2, characterized in that, A spacer is vertically disposed between the first glass substrate and the second glass substrate. One end of the spacer abuts against the second glass substrate, and the other end passes through the gap between adjacent pixel units and abuts against the first glass substrate.

4. The display system according to claim 2, characterized in that, The liquid crystal display module further includes a first polarizer and a second polarizer. The first polarizer is disposed on the side of the first glass substrate away from the liquid crystal layer, and the second polarizer is disposed on the side of the second glass substrate facing the backlight module.

5. The display system according to claim 1, characterized in that, The substrate is provided with a driving unit, which is electrically connected to the light-emitting unit and is used to adjust the brightness of the red LED chip, green LED chip and blue LED chip.

6. The display system according to claim 1, characterized in that, The backlight module further includes a back plate, a reflective sheet attached to the back plate, a light guide plate located above the reflective sheet, and an optical film group disposed between the light guide plate and the liquid crystal display module. The substrate is disposed on the back plate, and the light emitted by the light-emitting unit passes through the light guide plate and the optical film group and enters the liquid crystal display module.

7. The display system according to claim 6, characterized in that, The light-emitting unit is located below the light guide plate facing the reflective sheet, forming a direct-lit backlight module.

8. The display system according to claim 6, characterized in that, The light-emitting unit is located on the side of the light guide plate perpendicular to the reflective sheet, forming a side-lit backlight module.

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