Anti-blue-light display module and display equipment
By setting up quantum dot groups and reflective parts in the display module, the problem of difficulty in both blue light and high color gamut is solved, the color gamut improvement and blue light reduction are achieved, and the physical strength of the module is enhanced.
Patent Information
- Application Number
- CN202421879563.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-05
AI Technical Summary
In the prior art, it is difficult to take into account both the blue light and the high color gamut, resulting in the color difference problem and physical loss problem of the display module.
By providing the first OCA layer and the second OCA layer in the display module, a quantum dot group is arranged in the first OCA layer for converting light colors, and a reflector is arranged in the second OCA layer for reflecting unconverted blue light.
It improves the color gamut of the display module, effectively reduces the blue light entering the eyes, enhances the physical strength of the anti-blue light function, and avoids external wear.
Smart Images
Figure CN222913989U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of display, and particularly relates to an anti-blue light display module and a display device. Background Art
[0002] With the development of display technology, consumers have higher and higher requirements for aspects such as color rendering and eye protection performance of display products.
[0003] In the technical solutions for dealing with blue light in traditional display products, an anti-blue light film or an anti-blue light coating is usually adopted. The anti-blue light film or coating is arranged on the cover plate, and a relatively simple method is to arrange it on the side of the cover plate facing away from the display light source.
[0004] However, both the anti-blue light film and the anti-blue light coating have problems of physical loss, and the anti-blue light film and the anti-blue light coating in the traditional technology are prone to cause color difference of the display module. It is difficult for consumers to have both the requirements of anti-blue light for protecting eyesight and the high color gamut of the display module. Summary of the Utility Model
[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an anti-blue light display module and a display device, aiming to solve the problem that it is difficult to balance anti-blue light and high color gamut in the prior art.
[0006] In order to achieve the above purpose, the utility model is realized by the following technical solutions:
[0007] An anti-blue light display module includes a backlight assembly. The top end of the backlight assembly is connected to a first OCA layer. The side of the first OCA layer facing away from the backlight assembly is connected to a second OCA layer. The side of the second OCA layer facing away from the first OCA layer is connected to a cover plate. A quantum dot group is arranged in the first OCA layer, and the quantum dot group is used for converting the color of light. A plurality of reflection parts are arranged in the second OCA layer, and the reflection parts are used for reflecting blue light. The side of the reflection part facing the first OCA layer forms an inclined surface, and an acute angle is formed between the inclined surface and the first OCA layer.
[0008] Compared with the prior art, the beneficial effects of the utility model are as follows: By arranging the first OCA layer and the second OCA layer, the quantum dot group in the first OCA layer is used for converting the color of light, generating three primary colors of light and mixing them, which is beneficial to improving the color gamut, and is beneficial to converting blue light into red and green light. The second OCA layer includes reflection parts, and the reflection parts can further reflect the un-converted blue light back to the first OCA layer for color conversion, so that the blue light entering the eyes of consumers from the cover plate is greatly reduced. Based on the transparent OCA material and pasted between the cover plate and the backlight assembly, it can increase the physical strength of the anti-blue light display module and avoid external abrasion.
[0009] Furthermore, the backlight assembly includes a light source portion, a lower polarizer, an LCD panel, and an upper polarizer, which are connected in sequence from bottom to top.
[0010] Furthermore, one end of the reflection portion facing away from the cover plate is connected to the first OCA layer.
[0011] Furthermore, the quantum dot group includes a plurality of red quantum dots, a plurality of green quantum dots, and a plurality of blue quantum dots, and the sizes of the red quantum dots, the green quantum dots, and the blue quantum dots are all 2 nm to 10 nm.
[0012] Furthermore, the quantity ratio of the red quantum dots to the green quantum dots is 1:2 to 1:10.
[0013] Furthermore, the number of the blue quantum dots is less than the number of the red quantum dots.
[0014] Furthermore, an LED lamp is arranged inside the light source portion, and the projected areas of the lower polarizer and the upper polarizer on a horizontal plane are both smaller than the projected area of the LCD panel on the horizontal plane.
[0015] A display device includes the anti-blue light display module as described in the above technical solution. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic structural diagram of the anti-blue light module in an embodiment of the present invention;
[0017] MAIN ELEMENT SYMBOL DESCRIPTION:
[0018] Light source unit 100 LED lamp 110 Lower polarizer 210 LCD panel 220 Upper polarizer 230 First OCA layer 310 Second OCA layer 320 Reflection part 321 Cover plate 400
[0019] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. SPECIFIC EMBODIMENTS
[0020] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive.
[0021] It should be noted that when an element is referred to as "fixedly provided on" another element, it can be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are only for the purpose of illustration.
[0022] Unless otherwise defined, all technical and scientific terms used in this article have the same meaning as those commonly understood by those skilled in the technical field to which this utility model belongs. The terms used in the description of this utility model in this article are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this article includes any and all combinations of one or more of the related listed items.
[0023] Please refer to Figure 1 , in the anti-blue light display module in the embodiment of this utility model, it includes a backlight assembly. The backlight assembly includes a light source part 110, a lower polarizer 210, an LCD panel 220 and an upper polarizer 230 that are connected in sequence from bottom to top. An LED lamp 110 is arranged inside the light source part 100. The projected areas of the lower polarizer 210 and the upper polarizer 230 on the horizontal plane are both smaller than the projected area of the LCD panel 220 on the horizontal plane. The top end of the backlight assembly is connected to a first OCA layer 310. One side of the first OCA layer 310 facing away from the backlight assembly is connected to a second OCA layer 320. One side of the second OCA layer 320 facing away from the first OCA layer 310 is connected to a cover plate 400. Preferably, the light source part 110 includes an iron frame. The iron frame is provided with side walls surrounding the lower polarizer 210, the LCD panel 220 and the upper polarizer 230. The side walls are used to enhance the physical structure of the backlight assembly and fix the multi-layer structure included in the backlight assembly. The top surface of the side walls is flush with the top surface of the upper polarizer 230. The LCD panel 220 includes a CF layer and a TFT layer.
[0024] A quantum dot group is arranged in the first OCA layer 310. The quantum dot group is used for converting the color of light. The quantum dot group includes a plurality of red quantum dots, a plurality of green quantum dots and a plurality of blue quantum dots. The sizes of the red quantum dots, the green quantum dots and the blue quantum dots are all 2 nm to 10 nm. The quantity ratio of the red quantum dots to the green quantum dots is 1:2 to 1:10. The quantity of the blue quantum dots is less than that of the red quantum dots. A plurality of reflection parts 321 are arranged in the second OCA layer 320. The reflection parts 321 are used for reflecting blue light. One surface of the reflection part 321 facing the first OCA layer 310 forms an inclined surface. An acute angle is formed between the inclined surface and the first OCA layer 310. One end of the reflection part 321 facing away from the cover plate 400 is connected to the first OCA layer 310. Preferably, the first OCA layer 310 is made by mixing a quantum dot solution and an OCA matrix. The blue quantum dots are 2 nm, the green quantum dots are 3 nm, and the red quantum dots are 7 nm. The quantity ratio of the red quantum dots to the green quantum dots is 1:4. When the second OCA layer is prepared, a glue layer with a plurality of grooves is formed through a mold, and the reflection parts 321 are arranged in the grooves. The material of the reflection parts 321 contains cholesteric liquid crystal. The cholesteric liquid crystal contains many layers of molecules, which are stacked into a helical structure. When the arrangement of the molecules rotates 360° and returns to the original direction, the distance between two layers with exactly the same molecular arrangement is called the pitch of the cholesteric liquid crystal. The pitch is consistent with the wavelength of the blue light to be reflected. Specifically, the blue light to be reflected is the blue light that can damage the human eye vision. The cholesteric liquid crystal reflects the blue light that damages the vision. Further, the wavelength of the blue light converted by the blue quantum dots is different from the wavelength of the blue light that damages the vision. The cross-sectional shape of the reflection part 321 is a right trapezoid. The arrangement of the inclined surface increases the reflection area of the blue light incident on the second OCA layer from different directions, and helps to disperse the reflected blue light that damages the vision, so that it is incident back on the first OCA layer 310 along more directions. It can be understood that setting the red and green quantum dots to convert the blue light into red and green light helps to improve the color performance of the display module. The blue quantum dots are also beneficial to improving the full-color performance of the display module, while reducing the blue light that damages the vision. However, the quantum dots still cannot convert all the blue light that damages the vision. Therefore, the reflection part 321 is set to reflect the un-converted blue light back to the first OCA layer 310 for conversion. In addition, the setting of the OCA matrix helps to strengthen the connection between the cover plate 400 and the backlight assembly, and is located under the cover plate 400. In daily use, the first OCA layer 310 and the second OCA layer 320 can both avoid abrasion and damage, enhancing the continuity of the blue light prevention function.
[0025] An embodiment of the present utility model further provides a display device, and the display device includes the blue light prevention module as described in the above embodiment.
[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0027] The above-described embodiments only express several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. 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 patent of the present utility model shall be subject to the appended claims.
Claims
1. A blue light protection display module, characterized in that: It includes a backlight assembly, the top of which is connected to a first OCA layer, the first OCA layer is connected to a second OCA layer on a side facing away from the backlight assembly, the second OCA layer is connected to a cover plate on a side facing away from the first OCA layer, a quantum dot group is arranged in the first OCA layer, the quantum dot group is used to convert the color of light, a plurality of reflective parts are arranged in the second OCA layer, the reflective parts are used to reflect blue light, a slope is formed on a side of the reflective part facing the first OCA layer, and an acute angle is formed between the slope and the first OCA layer.
2. The anti-blue light display module according to claim 1, characterized in that: The backlight assembly includes a light source portion, a lower polarizer, an LCD panel and an upper polarizer which are sequentially connected from bottom to top.
3. The anti-blue light display module according to claim 1, characterized in that: An end of the reflective portion facing away from the cover plate is connected to the first OCA layer.
4. The anti-blue light display module according to claim 1, characterized in that: The quantum dot group includes a plurality of red quantum dots, a plurality of green quantum dots and a plurality of blue quantum dots, and the sizes of the red quantum dots, the green quantum dots and the blue quantum dots are all between 2nm and 10nm.
5. The anti-blue light display module according to claim 4, characterized in that: The ratio of the number of the red quantum dots to the number of the green quantum dots is 1:2 to 1:
10.
6. The anti-blue light display module according to claim 4, characterized in that: The number of the blue quantum dots is less than the number of the red quantum dots.
7. The anti-blue light display module according to claim 2, characterized in that: An LED lamp is arranged inside the light source part, and the projection areas of the lower polarizer and the upper polarizer on the horizontal plane are both smaller than the projection area of the LCD panel on the horizontal plane.
8. A display device, characterized in that: It comprises the anti-blue light display module as described in any one of claims 1 to 7.