Liquid crystal display module

Abstract

The embodiment of the utility model belongs to the technical field of display modules. The utility model further relates to a liquid crystal display module which comprises a liquid crystal display assembly, the liquid crystal display assembly comprises a color filtering anti-reflection layer, the color filtering anti-reflection layer is composed of a filtering layer and an anti-reflection assembly, and the thickness of the anti-reflection assembly is equal to one fourth of the wavelength of light of the corresponding color in the anti-reflection assembly. According to the T liquid crystal display assembly, the color filtering anti-reflection layer is arranged, the color filtering anti-reflection layer is composed of the filtering layer and the anti-reflection assembly, the anti-reflection assembly can effectively restrain light reflection and increase light transmission, and therefore the transmittance of the T liquid crystal display assembly is improved, and a displayed image is brighter and clearer.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, and more specifically, to a liquid crystal display module. Background Art

[0002] Liquid crystal display (LCD), as an important representative of modern electronic device display technology, has been widely used in various terminal products such as televisions, computers, mobile phones, tablets, etc. Its working principle is mainly to use the optical properties of liquid crystal molecules to change the arrangement of liquid crystal molecules under the action of electric field, thereby controlling the transmission and blocking of light to form the desired image.

[0003] With the continuous development of science and technology, users have higher and higher requirements for the display effect of LCD screens. Performance indicators such as color reproduction, contrast, brightness and resolution have become key factors in measuring the quality of LCD screens. However, traditional LCD screens have large technical bottlenecks in terms of light reflection and transmission. When light passes through the LCD screen, part of the light will be reflected back, resulting in a decrease in image brightness and color distortion; at the same time, part of the light will be lost due to low transmission efficiency, further affecting the display effect. Therefore, we have made improvements to this and proposed a liquid crystal display module.

[0004] For example, a Chinese patent (publication number CN105528999B) discloses a display control method and device for a liquid crystal display screen, and its specification discloses: Liquid crystal display (LCD) is currently widely used and promoted due to its advantages such as energy saving, environmental protection, and lightness. Among them, liquid crystal displays using the vertical alignment (VA) driving mode are generally recognized by the market because of their high contrast and fast response speed. However, VA driving has a natural defect: the color shift phenomenon is more serious when viewed at a wide viewing angle (i.e. side view), that is, the picture will be distorted at a wide viewing angle, and in severe cases, the image cannot be seen clearly. The above patents can prove the defects of the prior art. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is that when light passes through a liquid crystal display screen, part of the light will be reflected back, resulting in a decrease in image brightness and color distortion.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A liquid crystal display module comprises: a liquid crystal display component, wherein the liquid crystal display component comprises a color filter anti-reflection layer, wherein the color filter anti-reflection layer is composed of a filter layer and an anti-reflection component, and the thickness of the anti-reflection component is equal to one quarter of the wavelength of the corresponding color light in the anti-reflection component.

[0008] As an improved method of the utility model, the filter layer includes a blue filter, a green filter and a red filter, and the anti-reflection component includes a blue anti-reflection film, a green anti-reflection film and a red anti-reflection film;

[0009] The red anti-reflection film is attached to the red filter, the green filter is attached to the red anti-reflection film, the green anti-reflection film is attached to the green filter, the blue filter is attached to the green anti-reflection film, and the blue anti-reflection film is attached to the blue filter.

[0010] As an improved method of the utility model, the thickness of the red anti-reflection film is equal to one quarter of the wavelength of the blue light in the red anti-reflection film;

[0011] The thickness of the green anti-reflection film is equal to one quarter of the wavelength of green light in the green anti-reflection film;

[0012] The thickness of the blue anti-reflection film is equal to one quarter of the wavelength of red light in the green anti-reflection film.

[0013] As an improved method of the utility model, the calculation formula for the thickness of the blue anti-reflection film, the green anti-reflection film and the red anti-reflection film is: d=(λ_air / n) / , where d represents the thickness, λ_medium is the wavelength of light in the medium, λ_air is the wavelength of light in the air, and n is the refractive index of the medium.

[0014] As an improvement of the utility model, the liquid crystal display assembly also includes a black matrix layer, which is attached to the side of the blue anti-reflection film away from the blue filter, and an upper polarizer is provided on the side of the black matrix layer away from the blue anti-reflection film.

[0015] As an improvement of the utility model, the liquid crystal display component also includes a liquid crystal layer, which is adhered to the side of the red filter away from the red anti-reflection film, a TFT glass substrate is provided on the side of the liquid crystal layer away from the red filter, and a lower polarizer is provided on the side of the TFT glass substrate away from the liquid crystal layer.

[0016] As an improved manner of the utility model, a backlight assembly is arranged on a side of the lower polarizer away from the TFT glass substrate, and the backlight assembly is used to provide the required light source for the liquid crystal display assembly.

[0017] As an improved manner of the utility model, the backlight assembly includes a backlight source, and a light guide plate is arranged on a surface of the backlight source close to the liquid crystal display assembly.

[0018] As an improvement of the utility model, the side of the light guide plate close to the liquid crystal display component is connected to a reflective sheet, the side of the reflective sheet close to the liquid crystal display component is connected to a diffusion sheet, and the side of the diffusion sheet close to the liquid crystal display component is connected to a prism sheet.

[0019] As an improved manner of the utility model, a touch screen is arranged on a side of the liquid crystal display assembly away from the backlight assembly, and the touch screen is connected to the upper polarizer.

[0020] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0021] In order to solve the problem in the prior art that when light passes through a liquid crystal display, part of the light will be reflected back, resulting in a decrease in image brightness and color distortion, the present application sets up a color filter and anti-reflection layer, which is composed of a filter layer and an anti-reflection component. The anti-reflection component can effectively suppress light reflection and increase light transmission, thereby improving the transmittance of the T liquid crystal display component, making the displayed image brighter and clearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of the liquid crystal display module provided in this application;

[0023] Figure 2 A schematic diagram of the structure of the color filter anti-reflection layer of the liquid crystal display module provided in this application;

[0024] Figure 3 A schematic diagram of the structure of a liquid crystal display component of a liquid crystal display module provided in this application;

[0025] Figure 4 This is a schematic diagram of the structure of the backlight assembly of the liquid crystal display module provided in this application.

[0026] Indicated in the figure:

[0027] 1. Liquid crystal display component; 101. Color filter anti-reflection layer; 1011. Filter layer; 10111. Blue filter; 10112. Green filter; 10113. Red filter; 1012. Anti-reflection component; 10121. Blue anti-reflection film; 10122. Green anti-reflection film; 10123. Red anti-reflection film; 102. Liquid crystal layer; 103. TFT glass substrate; 104. Lower polarizer; 105. Black matrix layer; 106. Upper polarizer; 2. Backlight component; 201. Backlight source; 202. Light guide plate; 203. Reflector; 204. Diffuser; 205. Prism; 3. Touch screen. DETAILED DESCRIPTION

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Reference to "embodiments" herein means that specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] As described in the background technology, with the continuous development of science and technology, users have higher and higher requirements for the display effect of liquid crystal display screens. Performance indicators such as color reproduction, contrast, brightness and resolution have become key factors in measuring the quality of liquid crystal display screens. However, traditional liquid crystal display screens have a large technical bottleneck in terms of light reflection and transmission. When light passes through the liquid crystal display screen, part of the light will be reflected back, resulting in a decrease in image brightness and color distortion; at the same time, part of the light will also be lost due to low transmission efficiency, further affecting the display effect.

[0030] In order to solve this technical problem, the utility model provides a liquid crystal display module.

[0031] Specifically, please refer to Figure 1-Figure 2 , the liquid crystal display module specifically includes:

[0032] The liquid crystal display component 1 includes a color filter anti-reflection layer 101, and the color filter anti-reflection layer 101 is composed of a filter layer 1011 and an anti-reflection component 1012. The thickness of the anti-reflection component 1012 is equal to one quarter of the wavelength of the corresponding color light in the anti-reflection component 1012.

[0033] The liquid crystal display module provided by the utility model has a color filter anti-reflection layer 101, and the color filter anti-reflection layer 101 is composed of a filter layer 1011 and an anti-reflection component 1012. The anti-reflection component 1012 can effectively suppress the reflection of light and increase the transmission of light, thereby improving the transmittance of the T liquid crystal display component 1, making the displayed image brighter and clearer.

[0034] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] Embodiment 1 of the liquid crystal display module of the utility model

[0038] Please refer to Figure 1-Figure 2 The utility model liquid crystal display module includes: a liquid crystal display component 1, the liquid crystal display component 1 includes a color filter anti-reflection layer 101, the color filter anti-reflection layer 101 is composed of a filter layer 1011 and an anti-reflection component 1012, the thickness of the anti-reflection component 1012 is equal to one quarter of the wavelength of the corresponding color light in the anti-reflection component 1012, the anti-reflection component 1012 can effectively suppress the reflection of light and increase the transmission of light, thereby improving the transmittance of the liquid crystal display component 1, making the displayed image brighter and clearer.

[0039] Further, such as Figure 2 As shown, the filter layer 1011 includes a blue filter 10111, a green filter 10112 and a red filter 10113, and the anti-reflection component 1012 includes a blue anti-reflection film 10121, a green anti-reflection film 10122 and a red anti-reflection film 10123;

[0040] The red anti-reflection film 10123 is attached to the red filter 10113, the green filter 10112 is attached to the red anti-reflection film 10123, the green anti-reflection film 10122 is attached to the green filter 10112, the blue filter 10111 is attached to the green anti-reflection film 10122, and the blue anti-reflection film 10121 is attached to the blue filter 10111, that is, a stacked arrangement is adopted. This is because the corresponding anti-reflection film is used in conjunction with the corresponding color filter, and each color anti-reflection film corresponds to a color filter. The stacking method can ensure that each color of light can effectively reduce reflection and increase transmission when passing through the corresponding anti-reflection film, thereby improving the display effect of the liquid crystal display. Through this stacked design, each color of the anti-reflection film can play a role independently, reduce the reflection of the corresponding color light, and optimize the transmittance. This helps to improve the color saturation and contrast of the liquid crystal display, thereby bringing a better visual experience to users.

[0041] Further, the thickness of the red anti-reflection film 10123 is equal to one quarter of the wavelength of the blue light in the red anti-reflection film 10123;

[0042] The thickness of the green anti-reflection film 10122 is equal to one quarter of the wavelength of the green light in the green anti-reflection film 10122;

[0043] The thickness of the blue anti-reflection film 10121 is equal to one quarter of the wavelength of the red light in the green anti-reflection film 10122;

[0044] The setting of the quarter-wavelength thickness is mainly to utilize the interference principle of light to achieve the effect of reducing reflection and increasing transmission. When light is emitted from a light-sparse medium (such as air) to a light-dense medium (such as an anti-reflection film material), reflection and refraction will occur at the interface. The design goal of the anti-reflection film is to make the reflected light interfere destructively, that is, to make the reflected light produce a phase difference when meeting, thereby canceling each other out and reducing the overall reflected light intensity. In order to achieve this goal, the thickness of the anti-reflection film needs to be precisely controlled. When the quarter setting is adopted, the optical path difference between the two beams of reflected light (reflected from the front and back surfaces of the anti-reflection film respectively) is exactly half a wavelength. Due to the wave nature of light, when the optical path difference between the two beams of light is an odd multiple of half a wavelength, they will interfere destructively, that is, cancel each other out. Therefore, by controlling the thickness of the anti-reflection film to be one-quarter of the wavelength of light in the anti-reflection film, the reflected light can be effectively reduced, so that more light can pass through the anti-reflection film, thereby improving the transmission performance of the optical element.

[0045] The blue anti-reflection film 10121, the green anti-reflection film 10122 and the red anti-reflection film 10123 are all made of calcium fluoride. The transmittance of the calcium fluoride-based anti-reflection film can reach more than 96%, and it has good light transmission performance, which means that more light can penetrate the material, thereby improving the performance of optical equipment; the anti-reflection film made of calcium fluoride has extremely high wear resistance and can withstand different degrees of mechanical shock and scratches, which enables it to maintain stable performance even in high frequency of use or harsh environments; the anti-reflection film made of calcium fluoride can also remain stable in high temperature environments and is not prone to structural changes and oxidation. reaction, which enables it to work normally in high temperature environments without reducing its performance; the anti-reflection film made of calcium fluoride can be easily processed by cutting, punching and bonding, which increases its flexibility in the manufacturing process and is easy to adapt to different design and production needs; in addition, as an inorganic compound, calcium fluoride also has good chemical stability and is insoluble in solvents such as water, acid and alkali, which further enhances its durability under various environmental conditions. In general, calcium fluoride as a material for anti-reflection film has excellent optical properties, mechanical properties and chemical stability, and is an ideal choice for manufacturing high-quality optical equipment.

[0046] Furthermore, the calculation formula for the thickness of the blue anti-reflection film 10121, the green anti-reflection film 10122 and the red anti-reflection film 10123 is: d=λ_air / n / 4, where d represents the thickness, λ_medium is the wavelength of light in the medium, λ_air is the wavelength of light in the air, and n is the refractive index of the medium; for example, to determine the specific wavelength of red light in the green anti-reflection film 10122, it is necessary to know the wavelength of red light in the air and the refractive index of the material used, which data can usually be found in relevant physics manuals or optical materials, or obtained through experimental measurements.

[0047] Embodiment 2 of the liquid crystal display module of the utility model

[0048] The liquid crystal display module of the utility model is further characterized as follows: Figure 1 and Figure 3 As shown, the liquid crystal display component 1 also includes a black matrix layer 105, which is adhered to the side of the blue anti-reflection film 10121 away from the blue filter 10111. An upper polarizer 106 is provided on the side of the black matrix layer 105 away from the blue anti-reflection film 10121. The upper polarizer 106 is used to block areas that do not require light transmission to improve contrast.

[0049] Further, such as Figure 1 and Figure 3 The liquid crystal display component 1 shown also includes a liquid crystal layer 102, and the liquid crystal layer 102 is attached to the side of the red filter 10113 away from the red anti-reflection film 10123. A TFT glass substrate 103 is provided on the side of the liquid crystal layer 102 away from the red filter 10113, and a lower polarizer 104 is provided on the side of the TFT glass substrate 103 away from the liquid crystal layer 102. The lower polarizer 104 and the upper polarizer 106 are arranged to only allow light in a specific direction to pass through, thereby ensuring the polarization effect of the liquid crystal display. The TFT glass substrate 103 is the basis of the liquid crystal display, and the liquid crystal layer 102 controls the arrangement of liquid crystal molecules through an electric field, thereby controlling the transmission and blocking of light.

[0050] Embodiment 3 of the liquid crystal display module of the present utility model

[0051] The liquid crystal display module of the utility model is further characterized as follows: Figure 1 and Figure 4 A backlight assembly 2 is provided on a side of the lower polarizer 104 away from the TFT glass substrate 103 . The backlight assembly 2 is used to provide the required light source for the liquid crystal display assembly 1 .

[0052] Further, such as Figure 1 and Figure 4As shown, the backlight assembly 2 includes a backlight source 201, and a light guide plate 202 is arranged on the side of the backlight source 201 close to the liquid crystal display assembly 1. The backlight source 201 provides light for the liquid crystal display assembly 1, and the light guide plate 202 is used to evenly distribute the light of the backlight source 201 to the entire display area.

[0053] Further, such as Figure 1 and Figure 4 As shown, the side of the light guide plate 202 close to the liquid crystal display component 1 is connected to a reflective sheet 203, the side of the reflective sheet 203 close to the liquid crystal display component 1 is connected to a diffuser 204, and the side of the diffuser 204 close to the liquid crystal display component 1 is connected to a prism sheet 205. The reflective sheet 203 reflects unused light back to the light guide plate 202 to improve the utilization rate of the light. The setting of the diffuser sheet 204 makes the light more evenly distributed. The prism sheet 205 is used to enhance the directionality of the light and improve the brightness.

[0054] Further, such as Figure 1 The side of the liquid crystal display assembly 1 away from the backlight assembly 2 is provided with a touch screen 3, the touch screen 3 is connected to the upper polarizer 106, the touch screen 3 protects the liquid crystal display assembly 1 from external damage and integrates a touch function.

[0055] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A liquid crystal display module, characterized in that: include: A liquid crystal display component (1), the liquid crystal display component (1) comprising a color filter anti-reflection layer (101), the color filter anti-reflection layer (101) comprising a filter layer (1011) and an anti-reflection component (1012), the thickness of the anti-reflection component (1012) being equal to one quarter of the wavelength of the corresponding color light in the anti-reflection component (1012).

2. The liquid crystal display module according to claim 1, characterized in that: The filter layer (1011) comprises a blue filter (10111), a green filter (10112) and a red filter (10113); the anti-reflection component (1012) comprises a blue anti-reflection film (10121), a green anti-reflection film (10122) and a red anti-reflection film (10123); The red anti-reflection film (10123) is attached to the red filter (10113), the green filter (10112) is attached to the red anti-reflection film (10123), the green anti-reflection film (10122) is attached to the green filter (10112), the blue filter (10111) is attached to the green anti-reflection film (10122), and the blue anti-reflection film (10121) is attached to the blue filter (10111).

3. The liquid crystal display module according to claim 2, characterized in that: The thickness of the red anti-reflection film (10123) is equal to one quarter of the wavelength of blue light in the red anti-reflection film (10123); The thickness of the green anti-reflection film (10122) is equal to one quarter of the wavelength of green light in the green anti-reflection film (10122); The thickness of the blue anti-reflection film (10121) is equal to one quarter of the wavelength of red light in the green anti-reflection film (10122).

4. The liquid crystal display module according to claim 3, characterized in that: The calculation formula for the thickness of the blue anti-reflection film (10121), the green anti-reflection film (10122) and the red anti-reflection film (10123) is: d = (λ_air / n) / 4, where d represents the thickness, λ_medium is the wavelength of light in the medium, λ_air is the wavelength of light in air, and n is the refractive index of the medium.

5. The liquid crystal display module according to claim 4, characterized in that: The liquid crystal display component (1) further comprises a black matrix layer (105), wherein the black matrix layer (105) is laminated on a side of the blue anti-reflection film (10121) away from the blue filter (10111), and an upper polarizer (106) is provided on a side of the black matrix layer (105) away from the blue anti-reflection film (10121).

6. The liquid crystal display module according to claim 5, characterized in that: The liquid crystal display component (1) further comprises a liquid crystal layer (102), wherein the liquid crystal layer (102) is bonded to a side of a red filter (10113) away from a red anti-reflection film (10123), a TFT glass substrate (103) is provided on a side of the liquid crystal layer (102) away from the red filter (10113), and a lower polarizer (104) is provided on a side of the TFT glass substrate (103) away from the liquid crystal layer (102).

7. The liquid crystal display module according to claim 6, characterized in that: A backlight assembly (2) is provided on a side of the lower polarizer (104) away from the TFT glass substrate (103), and the backlight assembly (2) is used to provide the required light source for the liquid crystal display assembly (1).

8. The liquid crystal display module according to claim 7, characterized in that: The backlight assembly (2) comprises a backlight source (201), and a light guide plate (202) is provided on a surface of the backlight source (201) close to the liquid crystal display assembly (1).

9. The liquid crystal display module according to claim 8, characterized in that: A side of the light guide plate (202) close to the liquid crystal display component (1) is connected to a reflective sheet (203), a side of the reflective sheet (203) close to the liquid crystal display component (1) is connected to a diffusion sheet (204), and a side of the diffusion sheet (204) close to the liquid crystal display component (1) is connected to a prism sheet (205).

10. The liquid crystal display module according to claim 9, characterized in that: A touch screen (3) is provided on a side of the liquid crystal display assembly (1) away from the backlight assembly (2), and the touch screen (3) is connected to an upper polarizer (106).

Images