Liquid crystal display module with high-color-gamut polaroid

Abstract

The utility model discloses a liquid crystal display module with a high-color-gamut polaroid, which comprises a cover plate, a liquid crystal display screen and a backlight structure, and the cover plate, the liquid crystal display screen and the backlight structure are sequentially stacked. The liquid crystal display screen comprises an upper polaroid, a liquid crystal display panel and a lower polaroid, the upper polaroid, the liquid crystal display panel and the lower polaroid are sequentially stacked, and a quantum dot film layer is arranged in the upper polaroid and / or the lower polaroid. According to the liquid crystal display module with the high-color-gamut polaroid, the quantum dot thin film layer is arranged in the upper polaroid and / or the lower polaroid, so that when a blue light part in light emitted by the backlight structure passes through the quantum dot thin film layer, more corresponding red light or green light can be excited after the blue light encounters quantum dots, and therefore the color gamut effect is improved. Therefore, the amount of red or green light in the light can be correspondingly increased, the color gamut of the liquid crystal display screen can be improved, an existing mode of improving the color gamut is replaced, and cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display, in particular to a liquid crystal display module with a high-color gamut polarizer. Background Art

[0002] The application of liquid crystal display technology in electronic products is becoming increasingly widespread. However, with the continuous improvement of users' requirements for display effects, the limitations of traditional liquid crystal display modules in color gamut performance are gradually revealed. The color gamut, also known as color saturation, is one of the important parameters of the display effect of the display module. The higher the value of color saturation, the richer and more vivid the displayed colors are.

[0003] The traditional method of improving the color gamut is to encapsulate phosphor powder in the backlight LED lamp. The composition of the phosphor powder is the main factor affecting the color gamut, mainly using nitride phosphor powder or KSF phosphor powder, but the costs of these two kinds of phosphor powders are very high, and there are certain limitations.

[0004] In view of the above, a liquid crystal display module with a high-color gamut polarizer is proposed to replace the existing method of improving the color gamut, thereby reducing the cost. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a liquid crystal display module with a high-color gamut polarizer to replace the existing method of improving the color gamut, thereby being able to reduce the cost.

[0006] The purpose of the utility model is achieved by the following technical solutions:

[0007] A liquid crystal display module with a high-color gamut polarizer includes: a cover plate, a liquid crystal display screen and a backlight structure. The cover plate, the liquid crystal display screen and the backlight structure are stacked in sequence; the liquid crystal display screen includes an upper polarizer, a liquid crystal display panel and a lower polarizer. The upper polarizer, the liquid crystal display panel and the lower polarizer are stacked in sequence, and a quantum dot thin film layer is provided in the upper polarizer and / or the lower polarizer.

[0008] In one embodiment, the lower polarizer includes a PSA layer, the quantum dot thin film layer, a first TAC layer, a PVA layer and a second TAC layer which are stacked in sequence.

[0009] In one embodiment, a first high-temperature resistant layer and a second high-temperature resistant layer are further provided on the lower polarizer. The PSA layer, the first high-temperature resistant layer, the quantum dot thin film layer, the first TAC layer, the PVA layer, the second TAC layer and the second high-temperature resistant layer are stacked in sequence.

[0010] In one embodiment, the upper polarizer includes a PSA layer, the quantum dot thin film layer, a first TAC layer, a PVA layer, and a second TAC layer, which are stacked in sequence.

[0011] In one embodiment, the structure of the upper polarizer is the same as that of the lower polarizer.

[0012] In one embodiment, the quantum dot thin film layer is a quantum dot thin film layer with a quantum dot particle size between 3 nm and 7 nm.

[0013] In one embodiment, the cover plate is a glass cover plate.

[0014] In one embodiment, the liquid crystal display panel includes a CF glass and a TFT glass, and the upper polarizer, the CF glass, the TFT glass, and the lower polarizer are stacked in sequence.

[0015] In one embodiment, the cover plate and the liquid crystal display screen are adhesively connected through an OCA optical adhesive.

[0016] In one embodiment, the backlight structure includes a backlight bracket and backlight optical elements. A limiting cavity is formed on the backlight bracket, and the backlight optical elements are arranged in the limiting cavity.

[0017] Compared with the prior art, the present utility model has at least the following advantages:

[0018] In the liquid crystal display module with a high-color gamut polarizer of the present utility model, by providing a quantum dot thin film layer in the upper polarizer and / or the lower polarizer, when the blue light part in the light emitted by the backlight structure passes through the quantum dot thin film layer, more corresponding red light or green light is excited when the blue light encounters the quantum dots. In this way, the amount of red or green light in the light can be correspondingly increased, thereby improving the color gamut of the liquid crystal display screen, replacing the existing method of improving the color gamut, and thus reducing costs. In addition, setting the quantum dot thin film layer on the polarizer is more convenient for batch processing and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below.

[0020] Figure 1 It is a schematic structural diagram of a liquid crystal display module with a high-color gamut polarizer in an embodiment of the present utility model;

[0021] Figure 2 It is a schematic structural diagram of a lower polarizer in an embodiment of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of a lower polarizing plate in another embodiment of the present utility model. Specific embodiments

[0023] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0024] Please refer to Figure 1 As shown, a liquid crystal display module 10 with a high color gamut polarizing plate includes: a cover plate 100, a liquid crystal display screen 200 and a backlight structure 300. The cover plate 100, the liquid crystal display screen 200 and the backlight structure 300 are stacked in sequence; the liquid crystal display screen 200 includes an upper polarizing plate 210, a liquid crystal display panel and a lower polarizing plate 220. The upper polarizing plate 210, the liquid crystal display panel and the lower polarizing plate 220 are stacked in sequence, and a quantum dot thin film layer 222 is provided in the upper polarizing plate 210 and / or the lower polarizing plate 220.

[0025] It should be noted that quantum dots are semiconductor nanocrystals. When blue light encounters quantum dots, more corresponding red or green light will be newly excited, making the colors of the display screen more vivid and bright; therefore, by providing the quantum dot thin film layer 222 in the upper polarizing plate 210 and / or the lower polarizing plate 220 (that is, including three implementation modes. The first is to provide the quantum dot thin film layer 222 only on the upper polarizing plate 210; the second is to provide the quantum dot thin film layer 222 on the lower polarizing plate 220; the third is to provide the quantum dot thin film layer 222 on both the upper polarizing plate 210 and the lower polarizing plate 220), through the quantum dot thin film layer 222, more red or green light is added to the conventional backlight light, thereby improving the color expressiveness of the display module, replacing the existing method of improving the color gamut, and reducing the processing cost. At the same time, in this embodiment, the quantum dot thin film layer 222 is provided on the upper polarizing plate 210 or the lower polarizing plate 220 by coating. That is, when producing the upper polarizing plate 210 or the lower polarizing plate 220, only one more coating process needs to be added to complete the coating of the quantum dot thin film layer 222. At the same time, the production of polarizing plates usually processes and composites each layer of coil materials and then cuts them into small pieces of polarizing plates. Therefore, rapid mass production can be achieved. Therefore, directly setting the quantum dot thin film layer 222 on the polarizing plate can improve the processing efficiency compared with setting it in other parts of the display module.

[0026] Please refer to Figure 2As shown, the lower polarizer 220 includes a PSA layer 221, a quantum dot thin film layer 222, a first TAC layer 223, a PVA layer 224, and a second TAC layer 225 that are stacked in sequence. The PSA layer 221 is a pressure-sensitive adhesive layer, and the PVA layer 224 is a layer that plays a polarizing role, that is, natural light is converted into polarized light through the PVA layer 224. The first TAC (triacetyl cellulose) layer and the second TAC (triacetyl cellulose) layer are used to protect the PVA layer 224 from moisture erosion. The quantum dot thin film layer 222 is coated on the first TAC layer 223.

[0027] Please refer to Figure 3 As shown, in another embodiment, a first high-temperature resistant layer 226 and a second high-temperature resistant layer 227 are further provided on the lower polarizer 220. The PSA layer 221, the first high-temperature resistant layer 226, the quantum dot thin film layer 222, the first TAC layer 223, the PVA layer 224, the second TAC layer 225, and the second high-temperature resistant layer 227 are stacked in sequence. In order to improve the high-temperature resistance of the polarizer so that the liquid crystal display module can adapt to a high-temperature environment, therefore, a first high-temperature resistant layer 226 and a second high-temperature resistant layer 227 are also provided on the upper polarizer 210 to protect the inner structure through the first high-temperature resistant layer 226 and the second high-temperature resistant layer 227 and prevent the inner structure of the polarizer from being damaged by high temperature. For example, both the first high-temperature resistant layer 226 and the second high-temperature resistant layer 227 are polyimide thin film layers.

[0028] Please refer to Figure 2 As shown, the upper polarizer 210 includes a PSA layer, a quantum dot thin film layer, a first TAC layer, a PVA layer, and a second TAC layer that are stacked in sequence.

[0029] Furthermore, the structure of the upper polarizer 210 is the same as that of the lower polarizer 220. That is, high-temperature resistant layers are provided on both the upper polarizer 210 and the lower polarizer 220 so that the display module can adapt to a high-temperature environment.

[0030] Specifically, the quantum dot thin film layer 222 is a quantum dot thin film layer with a quantum dot particle size between 3 nm and 7 nm. That is, the particle size of the quantum dots determines the emission spectrum, and the entire visible spectral region is covered by changing the particle size of the quantum dots, thereby being able to greatly improve the color gamut range. Among them, quantum dots around 3 nm can emit green light after being excited by blue light, and quantum dots around 7 nm can emit red light after being excited by blue light. Therefore, the particle size of the quantum dots can be adaptively selected according to actual needs. In this way, the color expressiveness of the liquid crystal display module can be improved, usually increasing by 30% to 50% based on the color gamut of the existing color gamut specifications.

[0031] Preferably, the cover plate 100 is a glass cover plate 100.

[0032] Specifically, the display panel includes CF (Color Filter) glass and TFT (Thin Film Transistor) glass. The upper polarizer 210, CF glass 230, TFT glass 240, and lower polarizer 220 are stacked in sequence to achieve the display function.

[0033] Furthermore, the cover plate 100 and the liquid crystal display screen 200 are adhesively connected through an OCA (Optical Clear Adhesive) optical adhesive 400. The OCA optical adhesive has a high light transmittance and strong bonding performance, thus ensuring the bonding firmness.

[0034] Furthermore, the backlight structure 300 includes a backlight bracket and backlight optical elements. A limiting cavity is formed on the backlight bracket, and the backlight optical elements are arranged in the limiting cavity. The backlight optical elements generally include an upper brightness enhancement film, a lower brightness enhancement film, a diffusion film, a light guide plate, and a reflector, and also include an LED light bar for providing a light source. All these components are arranged in the limiting cavity to ensure the quality of the light source.

[0035] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A liquid crystal display module with a high color gamut polarizer, characterized in that, Comprising: A cover plate, a liquid crystal display screen, and a backlight structure, the cover plate, the liquid crystal display screen, and the backlight structure are stacked in sequence; The liquid crystal display screen includes an upper polarizer, a liquid crystal display panel, and a lower polarizer, the upper polarizer, the liquid crystal display panel, and the lower polarizer are stacked in sequence, and a quantum dot thin film layer is provided in the upper polarizer and / or the lower polarizer; The lower polarizer includes a PSA layer, the quantum dot thin film layer, a first TAC layer, a PVA layer, and a second TAC layer stacked in sequence; A first high-temperature resistant layer and a second high-temperature resistant layer are further provided on the lower polarizer, and the PSA layer, the first high-temperature resistant layer, the quantum dot thin film layer, the first TAC layer, the PVA layer, the second TAC layer, and the second high-temperature resistant layer are stacked in sequence; The upper polarizer includes a PSA layer, the quantum dot thin film layer, a first TAC layer, a PVA layer, and a second TAC layer stacked in sequence; The structure of the upper polarizer is the same as that of the lower polarizer; The quantum dot thin film layer is a quantum dot thin film layer with a quantum dot particle size between 3nm and 7nm.

2. The liquid crystal display module with a high color gamut polarizer according to claim 1, characterized in that, The cover plate is a glass cover plate.

3. The liquid crystal display module with a high color gamut polarizer according to claim 1, wherein The liquid crystal display panel includes a CF glass and a TFT glass, and the upper polarizer, the CF glass, the TFT glass, and the lower polarizer are stacked in sequence.

4. The liquid crystal display module with a high color gamut polarizer according to claim 1, characterized in that The cover plate and the liquid crystal display screen are adhesively connected through an OCA optical adhesive.

5. The liquid crystal display module with a high color gamut polarizer according to claim 1, characterized in that, The backlight structure includes a backlight bracket and backlight optical elements, a limiting cavity is formed on the backlight bracket, and the backlight optical elements are arranged in the limiting cavity.

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