Liquid crystal display panel and manufacturing method thereof

Abstract

The invention discloses a liquid crystal display panel and a manufacturing method thereof, and aims to provide a liquid crystal display panel which is better in display effect and more stable in performance. The liquid crystal display panel comprises a liquid crystal panel layer, a transparent conducting layer, a polarizing film, a power management circuit and a driving circuit, and is combined with an LED backlight source, a tempered glass protection layer and a capacitive touch layer. By accurately controlling the material and the thickness of the transparent conductive layer, the structure and the polarization angle of the polarizing film, the uniform light distribution of the backlight source and the liquid crystal injection pressure, the invention provides the liquid crystal display panel with high brightness, excellent display effect, touch function and lower power consumption.

Description

Technical Field

[0001] The present invention belongs to the technical field of liquid crystal display, and in particular relates to a liquid crystal display panel and a manufacturing method thereof. Background Art

[0002] Liquid crystal display panels (LCD) have been widely used in various display devices. With the advancement of technology, LCD panels have been continuously optimized in terms of resolution, display effect, response speed, etc. However, LCD panels in the existing technology still face some challenges, such as uneven backlight, slow touch response speed, and unstable display effect in different environments.

[0003] In existing LCD panels, metal oxide (such as ITO) materials are usually used as transparent conductive layers, but their production process is complicated and the material cost is high. Most of the backlight sources of LCD panels use traditional CCFL (cold cathode fluorescent lamp) or LED backlight sources, but the unevenness of the backlight source still affects the display quality. In addition, the integration of touch function and LCD display still has problems such as insufficient response and inaccurate touch recognition.

[0004] Therefore, there is an urgent need for a new type of liquid crystal display panel that can improve backlight uniformity, enhance display effects and increase touch responsiveness while reducing manufacturing costs. Summary of the invention

[0005] In order to solve the above problems, the present invention discloses a liquid crystal display panel and a manufacturing method thereof, aiming to improve the precision and efficiency of roof truss assembly through innovative design and improved assembly process, and ensure the stability and safety of the structure during assembly. The liquid crystal display panel is composed of an upper chord, a middle chord, a lower chord, a middle upper chord web member, a middle lower chord web member, and a lower chord hyperbolic rod, and adopts a high-precision assembly process so that the error of each splicing point is controlled within a specified range, thereby improving the reliability of the overall structure.

[0006] To achieve the above object, the technical solution of the present invention is as follows: A liquid crystal display panel and a manufacturing method thereof, comprising a liquid crystal panel layer, a transparent conductive layer, a polarizing film, a power management circuit, and a driving circuit, wherein a backlight source is provided at the back of the liquid crystal panel layer, the transparent conductive layer and the polarizing film are arranged at the front and back of the liquid crystal panel layer, a protective glass is provided at the front surface of the liquid crystal panel layer, the power management circuit is connected to various parts of the liquid crystal display panel, and the driving circuit is connected to the transparent conductive layer.

[0007] As an improvement of the present invention, the backlight source is an LED backlight source, and the light is evenly distributed through the light guide layer.

[0008] As an improvement of the present invention, the liquid crystal display panel further includes a touch layer, which is a capacitive touch screen layer, disposed on the front surface of the liquid crystal panel layer, for detecting touch signals and interacting with the drive circuit.

[0009] As an improvement of the present invention, the transparent conductive layer is made of carbon nanotube material or metal oxide material, and the protective glass is strengthened glass.

[0010] The present invention also provides a method for manufacturing a liquid crystal display panel, the specific steps of which are as follows: S1. Using carbon nanotube materials or metal oxide materials, a transparent conductive film is deposited on a glass substrate by sputtering or chemical vapor deposition technology, and a liquid crystal material is injected and encapsulated between the transparent conductive layers to form a liquid crystal panel layer, and a polarizing film is arranged on the front and back sides of the liquid crystal panel layer to adjust the direction of light entering the liquid crystal panel; S2. Install a protective glass on the front surface of the liquid crystal panel layer, wherein the protective glass is a tempered glass having an anti-blue light coating on the surface, and the backlight module is combined with the back of the liquid crystal display panel; S3. Connect the power management circuit to various parts of the liquid crystal display panel, provide a stable power supply to the panel, and install the driving circuit.

[0011] As an improvement of the present invention, the thickness of the transparent conductive layer is 50-100 nm.

[0012] As an improvement of the present invention, the polarizing film is a two-layer polarizing film, the polarizing film material is a polyester film, and the thickness of the polarizing film is 0.1-0.2 mm.

[0013] As an improvement of the present invention, the brightness of the LED backlight source is above 300 cd / m², and the thickness of the light guide layer of the LED backlight source is 0.5-1 mm.

[0014] As an improvement of the present invention, the thickness of the protective glass is 0.5-1 mm, and the surface of the protective glass has an anti-blue light coating, and the thickness of the coating is 2-5 μm.

[0015] As an improvement of the present invention, the pressure of the liquid crystal material of the liquid crystal panel layer during injection is controlled to be 2-3 bar.

[0016] The beneficial effects of the present invention are: The present invention adopts an LED backlight source, and evenly distributes light through a light-conducting layer, which significantly improves the brightness of the display panel and solves the problem of uneven backlight in traditional liquid crystal panels. Compared with traditional CCFL backlight sources, the brightness of the LED backlight source of the present invention can reach more than 300 cd / m², and the thickness of the light-conducting layer is 0.5-1 mm, which effectively improves the uniformity of the display. The present invention adopts a capacitive touch layer, which has a high-precision touch response capability, and the touch response time does not exceed 10 milliseconds, and can achieve precise touch operation. The touch layer also has a high anti-interference ability and can adapt to complex use environments. A reinforced glass protective layer is installed on the front surface of the liquid crystal panel, which increases the impact resistance and durability of the panel. At the same time, the surface of the reinforced glass is coated with an anti-blue light coating, which can effectively reduce the damage of blue light to the eyes and improve the safety of use. The present invention uses a carbon nanotube material or a metal oxide material (such as ITO) as a transparent conductive layer, which has lower resistance, higher transparency and more stable performance than traditional materials, and improves the overall effect and performance of the display panel. In addition, through precise sputtering and chemical vapor deposition (CVD) technology, manufacturing costs are reduced while ensuring high performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a framework diagram of the present invention. DETAILED DESCRIPTION

[0018] The present invention is 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. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0019] The specific implementation of the present invention is described by the following examples, each of which is only a partial application of the present invention, and can be selected and adjusted according to different needs in actual applications. In the following, "Example 1" is used as the main example, and the other examples are compared by adjusting certain parameters.

[0020] Embodiment 1 This embodiment provides a method for manufacturing a liquid crystal display panel, and the specific implementation steps are as follows: S1. A transparent conductive film is deposited on a glass substrate by sputtering technology, with a thickness controlled to be 80 nm to ensure good conductivity and transparency. The transparent conductive layer is carbon nanotubes.

[0021] S2. Select commercial liquid crystal materials and encapsulate them between transparent conductive layers by injection method. The liquid crystal injection pressure is 2.5 bar to ensure uniform distribution of liquid crystal molecules.

[0022] S3. Install two layers of polarizing films on the front and back sides of the liquid crystal panel respectively, wherein the polarizing films are polyester films with a thickness of 0.15 mm.

[0023] S4. Install LED backlight with a brightness of 350 cd / m² and a light guide layer thickness of 0.8mm to ensure uniform light distribution.

[0024] S5. Install tempered glass with a thickness of 0.7 mm and an anti-blue light coating with a thickness of 3 μm.

[0025] S6. Install the power management circuit and the driving circuit. The input voltage of the power management circuit is 12V, and the output voltage is 3.3V, 5V, and 12V. The driving circuit is connected to the transparent conductive layer through a connector to ensure the stable operation of the panel.

[0026] Embodiment 2 This embodiment provides a method for manufacturing a liquid crystal display panel, and the specific implementation steps are as follows: S1. A transparent conductive film is deposited on a glass substrate by chemical vapor deposition (CVD) technology, with a thickness controlled to be 60 nm to ensure good conductivity and transparency, wherein the transparent conductive layer is ITO.

[0027] S2. Select commercial liquid crystal materials and encapsulate them between transparent conductive layers by injection method. The liquid crystal injection pressure is 3 bar to ensure uniform distribution of liquid crystal molecules.

[0028] S3. Install two layers of polarizing films on the front and back sides of the liquid crystal panel respectively, wherein the polarizing films are polyester films with a thickness of 0.1 mm.

[0029] S4. Install LED backlight with a brightness of 320 cd / m² and a light guide layer thickness of 0.7mm to ensure uniform light distribution.

[0030] S5. Install tempered glass with a thickness of 1 mm and apply anti-blue light coating on the surface with a coating thickness of 4 μm.

[0031] S6. Install the power management circuit and the driving circuit. The input voltage of the power management circuit is 12V, and the output voltage is 3.3V, 5V, and 12V. The driving circuit is connected to the transparent conductive layer through a connector to ensure the stable operation of the panel.

[0032] Embodiment 3 This embodiment provides a method for manufacturing a liquid crystal display panel, and the specific implementation steps are as follows: S1. A transparent conductive film is deposited on a glass substrate by chemical vapor deposition (CVD) technology, with a thickness controlled to be 70 nm to ensure good conductivity and transparency, wherein the transparent conductive layer is ITO.

[0033] S2. Select commercial liquid crystal materials and encapsulate them between transparent conductive layers by injection method. The liquid crystal injection pressure is 2.8 bar to ensure uniform distribution of liquid crystal molecules.

[0034] S3. Install two layers of polarizing films on the front and back sides of the liquid crystal panel respectively, wherein the polarizing films are polyester films with a thickness of 0.2 mm.

[0035] S4. Install LED backlight with a brightness of 380 cd / m² and a light guide layer thickness of 0.9mm to ensure uniform light distribution.

[0036] S5. Install tempered glass with a thickness of 0.8 mm and an anti-blue light coating with a thickness of 3.5 μm.

[0037] S6. Install the power management circuit and the driving circuit. The input voltage of the power management circuit is 12V, and the output voltage is 3.3V, 5V, and 12V. The driving circuit is connected to the transparent conductive layer through a connector to ensure the stable operation of the panel.

[0038] Comparative Example The existing technology uses ITO as the transparent conductive layer and a cold cathode fluorescent lamp (CCFL) as the backlight source.

[0039] The transparent conductive layer has a thickness of 100-150nm, and the liquid crystal injection pressure of the liquid crystal panel layer is 3 bar. The polarizing film is a polyester film with a thickness of 0.2mm. The LED backlight source uses CCFL with a brightness of 250 cd / m², and the thickness of the light guide layer is 1mm. The protective glass is 1mm thick and has no anti-blue light coating.

[0040]

[0041] Through the comparison of experimental data, it can be seen that compared with the prior art, the display effect and touch response capability of Example 1, Example 2 and Example 3 are significantly improved, especially in terms of brightness, backlight uniformity, anti-blue light effect and touch response speed.

[0042] 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 liquid crystal display panel, comprising a liquid crystal panel layer, a transparent conductive layer, a polarizing film, a power management circuit, and a driving circuit, characterized in that: A backlight source is provided at the back of the liquid crystal panel layer, the transparent conductive layer and the polarizing film are arranged at the front and back of the liquid crystal panel layer, a protective glass is provided at the front surface of the liquid crystal panel layer, the power management circuit is connected to various parts of the liquid crystal display panel, and the driving circuit is connected to the transparent conductive layer.

2. The liquid crystal display panel according to claim 1, characterized in that: The backlight source is an LED backlight source, and the light is evenly distributed through the light guide layer.

3. The liquid crystal display panel according to claim 1, wherein: The liquid crystal display panel further includes a touch layer, which is a capacitive touch screen layer, disposed on the front surface of the liquid crystal panel layer, and is used to detect touch signals and interact with a driving circuit.

4. The liquid crystal display panel according to claim 1, wherein: The transparent conductive layer is made of carbon nanotube material or metal oxide material, and the protective glass is strengthened glass.

5. A method for manufacturing a liquid crystal display panel, characterized in that: The specific steps are as follows: S1. Using carbon nanotube materials or metal oxide materials, a transparent conductive film is deposited on a glass substrate by sputtering or chemical vapor deposition technology, and a liquid crystal material is injected and encapsulated between the transparent conductive layers to form a liquid crystal panel layer, and a polarizing film is arranged on the front and back sides of the liquid crystal panel layer to adjust the direction of light entering the liquid crystal panel; S2. Install a protective glass on the front surface of the liquid crystal panel layer, wherein the protective glass is a tempered glass having an anti-blue light coating on the surface, and the backlight module is combined with the back of the liquid crystal display panel; S3. Connect the power management circuit to various parts of the liquid crystal display panel, provide a stable power supply to the panel, and install the driving circuit.

6. The method for manufacturing a liquid crystal display panel according to claim 5, wherein: The thickness of the transparent conductive layer is 50-100 nm.

7. The method for manufacturing a liquid crystal display panel according to claim 5, wherein: The polarizing film is a two-layer polarizing film, the polarizing film material is a polyester film, and the thickness of the polarizing film is 0.1-0.2 mm.

8. The method for manufacturing a liquid crystal display panel according to claim 5, wherein: The brightness of the LED backlight source is above 300 cd / m², and the thickness of the light guide layer of the LED backlight source is 0.5-1 mm.

9. The method for manufacturing a liquid crystal display panel according to claim 5, wherein: The thickness of the protective glass is 0.5-1 mm, and the surface of the protective glass is provided with an anti-blue light coating, and the thickness of the coating is 2-5 μm.

10. The method for manufacturing a liquid crystal display panel according to claim 5, wherein: The pressure of the liquid crystal material of the liquid crystal panel layer during injection is controlled to be 2-3 bar.

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