Liquid crystal display module capable of improving color saturation
By setting a QD film layer on the cover of the liquid crystal display module and using quantum dots to excite light, the problem of insufficient color saturation in traditional liquid crystal display modules is solved, and the effect of high color saturation and cost reduction is achieved.
Patent Information
- Application Number
- CN202420925151.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-29
AI Technical Summary
Traditional LCD display modules are difficult to meet market demand in terms of color saturation, and the cost of using phosphor to improve color saturation is high.
By setting a QD film layer on the cover of the liquid crystal display module, the blue light is excited to red or green light by using quantum dots, thereby improving the color saturation of the display screen.
It significantly improves the color saturation of the liquid crystal display module, reduces product costs, and can replace phosphors and simplify the production process.
Smart Images
Figure CN222461846U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display, in particular to a liquid crystal display module capable of improving color saturation. Background Art
[0002] With the development of science and technology, liquid crystal displays are widely used in various electronic devices. As consumers' requirements for picture quality continue to increase, consumers' requirements for color saturation of display quality are also increasing. Color saturation is one of the important parameters of smart display effects. The higher the color saturation value, the richer and more colorful the display can display. However, traditional liquid crystal display modules are difficult to meet market demand in terms of color saturation. The conventional method is to use phosphors to improve color saturation, but the cost of phosphors is high.
[0003] In view of the above, a liquid crystal display module capable of improving color saturation is proposed, so as to replace phosphors, improve the color saturation of the liquid crystal display module, and reduce the cost of the product. Utility Model Content
[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a liquid crystal display module that can improve color saturation, thereby being able to replace phosphors, improve the color saturation of the liquid crystal display module, and reduce the cost of the product.
[0005] The purpose of this utility model is achieved through the following technical solutions:
[0006] A liquid crystal display module capable of improving color saturation comprises: a cover plate, a display screen and a backlight structure, wherein a display area and a frame area are arranged on the cover plate, the frame area is arranged around the display area, and a QD film layer is arranged on one side surface of the cover plate, and the QD film layer covers the display area; one side surface of the display screen is bonded to one side surface of the cover plate, and the QD film layer is located between the cover plate and the display screen; one side surface of the backlight structure is bonded to one side surface of the display screen away from the cover plate.
[0007] In one embodiment, the size of the QD film layer is larger than the size of the display area, so that the edges of the QD film layer extend to the frame area.
[0008] In one embodiment, a black frame ink layer is provided on the frame area.
[0009] In one embodiment, a protective layer is disposed on the cover plate, and the protective layer covers the QD film layer, and the protective layer is used to isolate and protect the QD film layer.
[0010] In one embodiment, the protective layer is a silicon dioxide thin film layer.
[0011] In one embodiment, the thickness of the silicon dioxide thin film layer is 25nm-35nm.
[0012] In one embodiment, the display screen and the cover plate are bonded and connected by a first optical adhesive.
[0013] In one embodiment, the first optical adhesive is an OCA optical adhesive.
[0014] In one embodiment, the display screen and the backlight structure are bonded and connected by a second optical adhesive.
[0015] In one embodiment, the second optical adhesive is an OCA optical adhesive.
[0016] Compared with the prior art, the utility model has at least the following advantages:
[0017] The utility model discloses a liquid crystal display module capable of improving color saturation by providing a cover plate, a display screen and a backlight structure, and providing a QD film layer on the display area of the cover plate. When the blue light part of the light emitted by the display screen reaches the QD film layer, the blue light can newly stimulate more corresponding red light or green light after encountering quantum dots, thereby significantly improving the color saturation of the liquid crystal display module, that is, improving the color expression of the liquid crystal display module, and at the same time being able to replace phosphors and reduce product costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.
[0019] Figure 1 This is a schematic structural diagram of a liquid crystal display module capable of improving color saturation in one embodiment of the utility model;
[0020] Figure 2 This is a structural schematic diagram of a cover plate of a liquid crystal display module capable of improving color saturation in one embodiment of the utility model; DETAILED DESCRIPTION
[0021] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.
[0022] See also Figure 1As shown, a liquid crystal display module 10 capable of improving color saturation includes: a cover plate 100, a display screen 200 and a backlight structure 300, a display area and a frame area are arranged on the cover plate 100, the frame area is arranged around the display area, and a QD (Quantum Dots) film layer is arranged on one side of the cover plate 100, and the QD film layer 110 covers the display area; one side of the display screen 200 is bonded to one side of the cover plate 100, and the QD film layer 110 is located between the cover plate 100 and the display screen 200; one side of the backlight structure 300 is bonded to one side of the display screen 200 away from the cover plate 100.
[0023] It should be noted that the QD film layer 110 is a semiconductor nanocrystal with a particle diameter of 1-10nm. The particle size of the QD film layer 110 determines the luminescence spectrum. The same material only needs to change the quantum dot particle size to achieve coverage of the entire visible spectrum. Usually, quantum dots of about 3nm can emit green light after being excited by blue light, and quantum dots of about 7nm can emit red light after being excited by blue light. In the utility model, a QD film layer 110 of a certain thickness is coated on the back of the cover plate 100. Through the QD film layer 110, when the blue light part of the light emitted by the liquid crystal display module reaches the QD film layer 110, the blue light encounters the quantum dots and newly excites more corresponding red light or green light, thereby significantly improving the color performance of the mobile phone display 200, that is, the color saturation, which can usually be increased by 30% to 50% based on the color gamut of the existing color gamut specifications. In addition, it should be noted that the utility model coats the QD film layer 110 on the cover plate 100 instead of setting it on the display screen 200 or the backlight structure 300, so it has the advantages of simple structure and simple production process. When the QD film layer 110 is damaged, it is only necessary to replace the cover plate 100 without changing the display screen 200 and the backlight structure 300, so it can reduce costs and replace the existing phosphors. At the same time, it can reduce production costs while improving color protection.
[0024] Furthermore, the display screen 200 is a TFT (Thin Film Transistor) display screen 200 , and the TFT display screen includes an upper glass 210 and a lower glass 220 , the upper glass is a color filter, and the lower glass is a TFT glass.
[0025] Furthermore, the backlight structure 300 includes a backlight frame 310, a light shielding sheet 320, an upper light enhancement film 330, a lower light enhancement film 340, a diffusion film 350, a light guide plate 360 and a reflective sheet 370. The upper light enhancement film 330, the lower light enhancement film 340, the diffusion film 350, the light guide plate 360 and the reflective sheet 370 are stacked on the backlight frame 310 in sequence. The light shielding sheet 320 is attached to the opening of the backlight frame 310. For example, the light shielding sheet 320 is a double-sided adhesive black foam. The light shielding sheet 320 plays a role in preventing light leakage. At the same time, the light shielding sheet 320 needs to be hollowed out in the display area.
[0026] In one embodiment, the size of the QD film layer 110 is larger than the size of the display area, so that the edges of the QD film layer 110 extend to the frame area. In this way, position deviation is avoided when the QD film layer 110 is coated, so that the QD film layer 110 cannot completely cover the display area, thereby preventing the QD film layer from being offset and affecting the overall display effect.
[0027] In one embodiment, a black frame ink layer is provided on the frame area, and the black frame ink layer serves as a light-shielding decoration.
[0028] See also Figure 2 As shown, in one embodiment, a protective layer 120 is provided on the cover plate 100, and the protective layer 120 covers the QD film layer 110, and the protective layer 120 is used to isolate and protect the QD film layer 110. Since the QD film layer 110 is provided on the cover plate 100, during the production process, foreign matter from the outside is easy to come into contact with the QD film layer 110, and damage the QD film layer 110, so a protective layer 120 is covered on the QD film layer 110, and the QD film layer 110 is isolated and protected by the protective layer 120; in this embodiment, the size of the protective layer 120 needs to be larger than the size of the QD film layer 110 to ensure that the protective layer 120 can completely cover the QD film layer 110; preferably, the protective layer 120 is a silicon dioxide film layer, and since the silicon dioxide film layer has better density and hardness, it can protect the QD film layer 110 from damage by foreign matter from the outside, and specifically, the silicon dioxide film layer is a multilayer composite film composed of overlapping silicon nitride and silicon dioxide. Preferably, the thickness of the silicon dioxide thin film layer is 25 nm-35 nm.
[0029] Preferably, the display screen 200 and the cover plate 100 are bonded and connected by a first optical adhesive 400. For example, the first optical adhesive 400 is an OCA optical adhesive. OCA optical adhesive is a special adhesive for bonding transparent optical elements, which has high transmittance and good adhesive strength, so it can ensure bonding stability without affecting the display effect of the liquid crystal display module.
[0030] Preferably, the display screen 200 and the backlight structure 300 are bonded and connected by a second optical adhesive 500. For example, the second optical adhesive 500 is an OCA optical adhesive. Similarly, the OCA optical adhesive has high transmittance and good adhesive strength, so it can ensure the bonding stability without affecting the display effect of the liquid crystal display module.
[0031] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A liquid crystal display module capable of improving color saturation, characterized in that: include: A cover plate, wherein a display area and a frame area are arranged on the cover plate, the frame area is arranged around the display area, and a QD film layer is arranged on one side surface of the cover plate, and the QD film layer covers the display area; A display screen, wherein one side of the display screen is bonded to one side of the cover plate, and the QD film layer is located between the cover plate and the display screen; and A backlight structure, wherein one side of the backlight structure is in contact with a side of the display screen away from the cover plate.
2. The liquid crystal display module capable of improving color saturation according to claim 1, characterized in that: The size of the QD film layer is larger than the size of the display area, so that the edges of the QD film layer extend to the frame area.
3. The liquid crystal display module capable of improving color saturation according to claim 1, characterized in that: A black frame ink layer is arranged on the frame area.
4. The liquid crystal display module capable of improving color saturation according to claim 3, characterized in that: A protective layer is disposed on the cover plate, and the protective layer covers the QD film layer. The protective layer is used to isolate and protect the QD film layer.
5. The liquid crystal display module capable of improving color saturation according to claim 4, characterized in that: The protective layer is a silicon dioxide thin film layer.
6. The liquid crystal display module capable of improving color saturation according to claim 5, characterized in that: The thickness of the silicon dioxide film layer is 25nm-35nm.
7. The liquid crystal display module capable of improving color saturation according to claim 1, characterized in that: The display screen and the cover plate are bonded and connected by a first optical adhesive.
8. The liquid crystal display module capable of improving color saturation according to claim 7, characterized in that: The first optical adhesive is OCA optical adhesive.
9. The liquid crystal display module capable of improving color saturation according to claim 1, characterized in that: The display screen and the backlight structure are bonded and connected by a second optical adhesive.
10. The liquid crystal display module capable of improving color saturation according to claim 9, characterized in that: The second optical adhesive is OCA optical adhesive.