High-brightness low-power-consumption liquid crystal display module and manufacturing method thereof

Abstract

The invention discloses a high-brightness low-power-consumption liquid crystal display module and a manufacturing method thereof, and belongs to the technical field of liquid crystal display. The high-brightness low-power-consumption liquid crystal display module comprises an upper polaroid, a color filter and a liquid crystal layer, and the two sides of the liquid crystal layer are connected with a pixel electrode and a common electrode; the thin film transistor array is positioned below the liquid crystal layer; the thin film transistor array sequentially comprises a grid electrode, a grid electrode insulating layer, a passivation layer and an active layer from top to bottom; the two sides of the active layer are connected with SD electrodes. The lower polaroid is positioned below the thin film transistor array; and the backlight module is positioned below the lower polaroid. According to the high-brightness low-power-consumption liquid crystal display module, the quantum dot film backlight module is adopted, the display brightness and the color gamut are improved, the power consumption is reduced through accurate light control, the response speed and the contrast ratio are improved through the use of the negative liquid crystal material, and the power consumption is further reduced. The arrangement of the carbon black particle ring reduces light leakage and improves the display quality.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid crystal display, and in particular relates to a high-brightness and low-power consumption liquid crystal display module and a manufacturing method thereof. Background Art

[0002] Liquid crystal display technology occupies a dominant position in the modern display field due to its low power consumption, high image quality, and light and portable characteristics. However, there is an irreconcilable contradiction between brightness and power consumption in traditional liquid crystal display modules. Especially under high brightness requirements, increasing the backlight intensity to improve brightness will cause a sharp increase in power consumption, affecting the endurance and environmental performance of the device. In addition, traditional liquid crystal display modules also have limitations in color performance and viewing angle, which restricts their application in the high-end display market. Therefore, the development of a liquid crystal display module that can provide high-brightness display while reducing power consumption and improving color and viewing angle performance is of great significance to meet the market demand for high-performance display technology. Summary of the invention

[0003] To solve the above-mentioned problems, the present invention discloses a high-brightness, low-power liquid crystal display module and a manufacturing method thereof. The quantum dot film backlight module is used, which not only improves the display brightness and color gamut, but also reduces power consumption through precise light control. The use of negative liquid crystal materials improves the response speed and contrast, further reducing power consumption. The setting of the carbon black particle circle reduces light leakage and improves display quality.

[0004] In order to achieve the above purpose, the specific technical solution of this application is as follows: A high-brightness and low-power consumption liquid crystal display module, comprising: An upper polarizer, the upper polarizer is located at the outermost layer of the display module; Color filter, located below the upper polarizer; A liquid crystal layer, located below the color filter, with two sides of the liquid crystal layer connected to the pixel electrode and the common electrode; A thin film transistor array is located below the liquid crystal layer; the thin film transistor array comprises a gate, a gate insulating layer, a passivation layer and an active layer from top to bottom; the active layer is composed of a plurality of thin film transistors, the thin film transistors are made of low temperature polysilicon material, and SD electrodes are connected to both sides of the active layer; a lower polarizer, located below the thin film transistor array; The backlight module is located below the lower polarizer.

[0005] Based on the above technical features, preferably, the backlight module adopts a quantum dot film.

[0006] Based on the above technical features, preferably, the liquid crystal layer uses negative liquid crystal material.

[0007] Based on the above technical features, preferably, a carbon black particle circle is provided around the liquid crystal layer.

[0008] Based on the above technical features, preferably, the upper polarizer and the lower polarizer are made of MC multi-layer coated ultra-thin CPL.

[0009] Based on the above technical features, preferably, the transmittance of the lower polarizer is greater than or equal to the transmittance of the upper polarizer.

[0010] Based on the above technical features, preferably, the surface layer of the upper polarizer is coated with an anti-reflection coating.

[0011] The present invention also discloses a method for manufacturing a high-brightness and low-power consumption liquid crystal display module, comprising the following steps: 1) Preparation of upper polarizer: Prepare MC multi-layer coated ultra-thin CPL as the upper polarizer; 2) Preparation of color filters: Preparation of color filters on ultra-thin glass or plastic substrates; 3) Preparation of liquid crystal layer: negative liquid crystal material is used to fill the liquid crystal layer, and a carbon black particle circle is set around the liquid crystal layer; 4) Preparation of thin film transistor array: The gate, gate insulating layer, passivation layer and active layer are deposited on the glass substrate in sequence, wherein the gate is made of metal, the gate insulating layer and passivation layer are made of SiNx material, and the active layer is made of low-temperature polysilicon material. SD electrodes are formed by photolithography and etching processes to connect to both sides of the active layer; 5) Preparation of lower polarizer: Prepare MC multi-layer coated ultra-thin CPL as the lower polarizer, and ensure that its transmittance is greater than or equal to the transmittance of the upper polarizer; 6) Preparation of backlight module: integrating quantum dot film in the backlight module; 7) Anti-reflection coating: Anti-reflection coating is applied on the surface of the upper polarizer; 8) Module assembly: stack the layers in the order of upper polarizer, color filter, liquid crystal layer, thin film transistor array, lower polarizer, and backlight module to ensure accurate alignment of each layer; 9) Electrical connection and sealing: Provide electrical connection for the thin film transistor array and backlight module, and perform sealing to ensure the airtightness and stability of the module.

[0012] Compared with the prior art, the beneficial effects of this application are: The high-brightness, low-power consumption liquid crystal display module provided by the present invention adopts a quantum dot film backlight module, which not only improves the display brightness and color gamut, but also reduces power consumption through precise light control. The use of negative liquid crystal materials improves the response speed and contrast, further reducing power consumption. The setting of the carbon black particle circle reduces light leakage and improves the display quality. The application of MC multi-layer coated ultra-thin CPL improves polarization efficiency and reduces light loss. The anti-reflective coating on the surface of the upper polarizer reduces the interference of ambient light and improves display clarity. The comprehensive application of these technologies enables the liquid crystal display module of the present invention to significantly reduce power consumption while maintaining high brightness, improve display performance, and meet the market demand for high-performance, low-energy consumption display technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a high-brightness and low-power consumption liquid crystal display module of the present invention; Figure 2 It is a structural schematic diagram of a thin film transistor array in a high brightness and low power consumption liquid crystal display module of the present invention; Figure 3 is a flow chart of the steps of the preparation method of the present invention; List of Figure Symbols: 1. Backlight module; 2. Lower polarizer; 3. Thin film transistor array; 301. Gate; 302. Gate insulation layer; 303. Passivation layer; 304. Active layer; 4. Liquid crystal layer; 5. Color filter; 6. Upper polarizer; 7. Source; 8. Drain; 9. Pixel electrode; 10. Common electrode. DETAILED DESCRIPTION

[0014] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0015] It should be noted that the words "upper", "lower", "left", "right", "front" and "rear" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0016] like Figure 1 As shown, a high-brightness and low-power consumption liquid crystal display module and a manufacturing method thereof, including a high-brightness and low-power consumption liquid crystal display module, including: An upper polarizer 6, which is located at the outermost layer of the display module; A color filter 7, located below the upper polarizer; A liquid crystal layer 4 is located below the color filter, and two sides of the liquid crystal layer are connected to the pixel electrode and the common electrode; The thin film transistor array 3 is located below the liquid crystal layer; Figure 2 As shown, the thin film transistor array is composed of a gate, a gate insulating layer, a passivation layer and an active layer from top to bottom; the active layer is composed of a plurality of thin film transistors, the thin film transistors are made of low temperature polysilicon material, and SD electrodes are connected to both sides of the active layer; A lower polarizer 2, located below the thin film transistor array; The backlight module 1 is located below the lower polarizer.

[0017] The backlight module 1 adopts a quantum dot film, which not only improves display brightness and color gamut, but also reduces power consumption through precise light control.

[0018] The liquid crystal layer 4 uses negative liquid crystal material, which improves the response speed and contrast and further reduces power consumption.

[0019] The liquid crystal layer 4 is surrounded by a carbon black particle circle, which reduces light leakage and improves display quality.

[0020] The upper polarizer 4 and the lower polarizer 2 are made of MC multi-layer coated ultra-thin CPL, which reduces light loss.

[0021] The light transmittance of the lower polarizer 2 is greater than or equal to the light transmittance of the upper polarizer 4 .

[0022] The surface of the upper polarizer 6 is coated with an anti-reflection coating, which reduces the interference of ambient light and improves display clarity.

[0023] The wavelength range of the upper polarizer and the lower polarizer covers 400 nm to 700 nm to ensure matching with the emission wavelength of the backlight source.

[0024] Preferably, the high-brightness, low-power liquid crystal display module further comprises a first phase difference wave plate and a second phase difference wave plate, which are generally used to adjust the phase difference of polarized light to achieve a specific optical effect, such as generating circularly polarized light or elliptically polarized light. In the liquid crystal display module, they can be integrated between the upper polarizer and the lower polarizer, or placed above or below the liquid crystal layer as independent components.

[0025] The present invention also discloses a method for manufacturing a high-brightness and low-power consumption liquid crystal display module, comprising the following steps: Figure 3 As shown: 1) Preparation of upper polarizer: Prepare MC multi-layer coated ultra-thin CPL as the upper polarizer to ensure it has high transmittance and good polarization performance.

[0026] 2) Preparation of color filters: Color filters are prepared on ultra-thin glass or plastic substrates to separate the three primary colors of RGB.

[0027] 3) Preparation of liquid crystal layer: negative liquid crystal material is used to fill the liquid crystal layer, and a carbon black particle circle is set around the liquid crystal layer to improve the display quality.

[0028] 4) Preparation of thin film transistor array: A gate, a gate insulating layer, a passivation layer and an active layer are sequentially deposited on a glass substrate, wherein the gate is made of metal, the gate insulating layer and the passivation layer are made of SiNx material, and the active layer is made of low-temperature polysilicon material.

[0029] The source / drain (SD electrode) is formed by photolithography and etching processes and connected to both sides of the active layer.

[0030] 5) Preparation of lower polarizer: Prepare MC multi-layer coated ultra-thin CPL as the lower polarizer, and ensure that its transmittance is greater than or equal to the transmittance of the upper polarizer.

[0031] 6) Preparation of backlight module: Integrate quantum dot film in the backlight module to improve the brightness and color gamut of the display module.

[0032] 7) Anti-reflective coating: Anti-reflective coating is applied to the surface of the upper polarizer to reduce reflection and glare of ambient light and improve display visibility.

[0033] 8) Module assembly: Stack the layers in the order of upper polarizer, color filter, liquid crystal layer, thin film transistor array, lower polarizer, and backlight module to ensure precise alignment of each layer.

[0034] 9) Electrical connection and sealing: Provide electrical connection for the thin film transistor array and backlight module, and perform sealing to ensure the airtightness and stability of the module.

[0035] It should be noted that the drawings only illustrate the technical ideas of the present invention, and the protection scope of the present invention cannot be limited by this shape. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications all fall within the protection scope of the claims of the present invention.

Claims

1. A high brightness and low power consumption liquid crystal display module, characterized in that: include: An upper polarizer, the upper polarizer is located at the outermost layer of the display module; Color filter, located below the upper polarizer; A liquid crystal layer, located below the color filter, with two sides of the liquid crystal layer connected to the pixel electrode and the common electrode; A thin film transistor array is located below the liquid crystal layer; the thin film transistor array comprises a gate, a gate insulating layer, a passivation layer and an active layer from top to bottom; The active layer is composed of a plurality of thin film transistors, the thin film transistors are made of low temperature polysilicon material, and both sides of the active layer are connected to SD electrodes; a lower polarizer, located below the thin film transistor array; The backlight module is located below the lower polarizer.

2. A high brightness and low power consumption liquid crystal display module according to claim 1, characterized in that: The backlight module adopts a quantum dot film.

3. The high brightness and low power consumption liquid crystal display module according to claim 1, characterized in that: The liquid crystal layer adopts negative liquid crystal material.

4. A high brightness and low power consumption liquid crystal display module according to claim 3, characterized in that: A carbon black particle circle is arranged around the liquid crystal layer.

5. The high-brightness and low-power consumption liquid crystal display module according to claim 1, characterized in that: The upper polarizer and the lower polarizer are made of MC multi-layer coated ultra-thin CPL.

6. The high-brightness and low-power consumption liquid crystal display module according to claim 1, characterized in that: The light transmittance of the lower polarizer is greater than or equal to the light transmittance of the upper polarizer.

7. The high-brightness and low-power consumption liquid crystal display module according to claim 4, characterized in that: The surface layer of the upper polarizer is coated with an anti-reflection coating.

8. A method for manufacturing a high-brightness, low-power liquid crystal display module, characterized in that: The steps include: Preparation of upper polarizer: Prepare MC multi-layer coated ultra-thin CPL as the upper polarizer; 2) Preparation of color filters: Preparation of color filters on ultra-thin glass or plastic substrates; 3) Preparation of liquid crystal layer: negative liquid crystal material is used to fill the liquid crystal layer, and a carbon black particle circle is set around the liquid crystal layer; 4) Preparation of thin film transistor array: The gate, gate insulating layer, passivation layer and active layer are deposited on the glass substrate in sequence, wherein the gate is made of metal, the gate insulating layer and passivation layer are made of SiNx material, and the active layer is made of low-temperature polysilicon material. SD electrodes are formed by photolithography and etching processes to connect to both sides of the active layer; 5) Preparation of lower polarizer: Prepare MC multi-layer coated ultra-thin CPL as the lower polarizer, and ensure that its transmittance is greater than or equal to the transmittance of the upper polarizer; 6) Preparation of backlight module: integrating quantum dot film in the backlight module; 7) Anti-reflection coating: Anti-reflection coating is applied on the surface of the upper polarizer; 8) Module assembly: stack the layers in the order of upper polarizer, color filter, liquid crystal layer, thin film transistor array, lower polarizer, and backlight module to ensure accurate alignment of each layer; 9) Electrical connection and sealing: Provide electrical connection for the thin film transistor array and backlight module, and perform sealing to ensure the airtightness and stability of the module.

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