Reflecting film structure, backlight module and medical display
By setting multiple open holes and gradient structure dots in the reflective film structure, absorbing and converting blue light into yellow light, the problem of MINILED backlight blue emission with an OD value less than 5mm is solved, and effective improvement of the small OD value backlight module is achieved.
Patent Information
- Application Number
- CN202420965025.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The prior art cannot effectively solve the blue-emitting phenomenon of MINILED backlight with an OD value less than 5mm.
A reflective film structure is adopted, including a reflective film and a gradient structure. A plurality of openings are laid on the reflective film. The dots in the gradient structure are used to absorb blue light and excite yellow light. The dots are set from outside to inside along the reflective film according to the area size, and each dot is adjacent to at least one opening.
Through this reflective film structure, blue light passing through the opening can be effectively absorbed and yellow light can be stimulated, which improves blue emission and is suitable for backlight modules with small OD values.
Smart Images
Figure CN222825694U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of displays, in particular to a reflective film structure, a backlight module and a medical display. Background Art
[0002] Most of the MINILEDs on the market currently have a blue light conversion film on their inner middle frame to reduce the bluing phenomenon around them. However, the blue light conversion film is generally only suitable for MINILED backlights with an OD value (the distance between the direct-type backlight LED light panel and the diffuser) ≥ 5mm. For MINILED backlights with an OD value of <5mm, the blue light conversion film cannot improve the bluing phenomenon. Utility Model Content
[0003] The utility model provides a reflective film structure, a backlight module and a medical display, aiming to solve the problem of bluish phenomenon in the current MINILED backlight with a small OD value.
[0004] In the first aspect, the utility model provides a reflective film structure, which includes a reflective film and a gradient structure; the reflective film is provided with a plurality of openings; the gradient structure includes a plurality of dots with different areas, the dots are used to absorb blue light and excite yellow light, and the plurality of dots are arranged on the reflective film from the outside to the inside along the reflective film according to their area sizes, and each of the dots is adjacent to at least one of the openings.
[0005] Furthermore, the plurality of mesh points are arranged on the reflective film in order from large to small in area and from outside to inside.
[0006] Furthermore, the reflective film includes a middle portion and a peripheral portion arranged around the middle portion; the mesh dots are arranged on the peripheral portion in sequence from the outside to the inside.
[0007] Furthermore, the dots and openings on the peripheral portion are arranged alternately.
[0008] Furthermore, each of the openings in the peripheral portion is surrounded by four of the mesh points.
[0009] Furthermore, among the dots arranged around the opening, the dots located on the same side have the same area.
[0010] Furthermore, the dots are silk-screen dots.
[0011] Furthermore, the material of the silk-screen dots at least includes fluorescent powder.
[0012] In a second aspect, the utility model further provides a backlight module, comprising any of the reflective film structures described above.
[0013] In a third aspect, the utility model further provides a medical display, comprising the backlight module described in any one of the above items.
[0014] The medical display disclosed by the utility model includes a backlight module, which includes a reflective film structure, which includes a reflective film and a gradient structure, wherein a plurality of openings are arranged on the reflective film, and blue light of MINILED passes through the openings into the cavity of the backlight module for light mixing, and the gradient structure includes a plurality of mesh points of different areas, which are used for absorbing blue light and stimulating yellow light to improve the bluing phenomenon, and each mesh point is adjacent to at least one opening, and can fully absorb the blue light passing through the opening, and can be used in a backlight module with a smaller OD value. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a structural schematic diagram of a reflective film structure provided by an embodiment of the utility model;
[0017] Figure 2 yes Figure 1 A partial enlarged view of
[0018] Figure 3 yes Figure 2 A partial enlarged view of . DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, operations, elements, components and / or groups thereof.
[0021] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, the singular forms of "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in the utility model specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.
[0022] In addition, the directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only for reference to the directions of the attached drawings and the use status of the product. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.
[0023] See also Figures 1 to 3 , Figure 1 It is a structural schematic diagram of a reflective film structure provided by an embodiment of the utility model; Figure 2 yes Figure 1 A partial enlarged view of Figure 3 yes Figure 2 A partial enlarged view of the Figure 1 As shown, the reflective film structure includes a reflective film 10 and a gradient structure; a plurality of openings 11 are provided on the reflective film 10; the gradient structure includes a plurality of dots 12 with different areas, the dots 12 are used to absorb blue light 21 and excite yellow light 22, and a plurality of the dots 12 are arranged on the reflective film 10 from the outside to the inside along the reflective film 10 according to their area sizes, and each of the dots 12 is adjacent to at least one of the openings 11.
[0024] Specifically, the reflective film structure includes a reflective film 10 and a gradient structure. The reflective film 10 is provided with a plurality of openings 11. Figure 1 and Figure 2 As shown, a plurality of openings 11 are evenly formed on the reflective film 10 .
[0025] The gradient structure includes a plurality of dots 12 of different areas, and the plurality of dots 12 are arranged on the reflective film 10 from the outside to the inside according to the size of the area. Figure 2 As shown, the dots 12 with the largest area are located at the outermost side of the reflective film 10, and the area of the dots 12 gradually decreases from the outer side to the inner side of the reflective film 10. Of course, according to actual needs, the dots 12 with the largest area can be arranged on the inner side of the reflective film 10, and the dots 12 with the smallest area can be arranged on the outermost side of the reflective film 10.
[0026] like Figure 1 As shown, the middle area of the reflective film 10 is not provided with dots 12. Usually, the area where dots 12 need to be set can be adjusted accordingly according to the size of the area where the bluing phenomenon occurs. The larger the area where the bluing phenomenon occurs, the larger the area where dots 12 need to be set.
[0027] The openings 11 on the reflective film 10 are used to allow the blue light 21 to pass through. When the blue light 21 passes through the openings 11 of the reflective film 10, at least one mesh point 12 is arranged around each opening 11. The mesh point 12 can absorb the blue light 21 and excite the yellow light 22, thereby eliminating the bluing phenomenon. Figure 3 As shown, the blue light 21 passes through the opening 11 and is absorbed by the mesh dots 12 located near the opening 11 , while the mesh dots 12 excite the yellow light 22 outward.
[0028] As a further embodiment, the plurality of mesh dots 12 are arranged on the reflective film 10 in order from large to small in area and from outside to inside.
[0029] Among them, Figure 2 As shown, the area of the dots 12 located on the outermost side of the reflective film 10 is the largest, and the area of the dots 12 located on the inner side of the reflective film 10 gradually decreases, so as to absorb different degrees of blue light 21.
[0030] As a further embodiment, the reflective film 10 includes a middle portion and a peripheral portion arranged around the middle portion; the mesh dots 12 are arranged on the peripheral portion in sequence from the outside to the inside.
[0031] Among them, Figure 1 As shown, Figure 1 The middle area is the middle part, and the peripheral part is arranged around the middle part. Both the middle part and the peripheral part are provided with openings 11, and the peripheral part is also provided with mesh points 12.
[0032] Figure 1 The area of the dots 12 far from the middle part is larger, and the area of the dots 12 close to the middle part is smaller, so as to absorb different blue lights 21.
[0033] As a further embodiment, the dots 12 and the openings 11 on the peripheral portion are arranged alternately.
[0034] The outer portion is staggered with mesh dots 12 and openings 11, that is, there is at least one mesh dot 12 near each opening 11, and at least one opening 11 near each mesh dot 12. Preferably, four mesh dots 12 are arranged near each opening 11 to fully absorb the blue light 21 passing through the opening 11.
[0035] As a further embodiment, each of the openings 11 in the peripheral portion is surrounded by four mesh points 12 .
[0036] Among them, each opening 11 can be provided with a dot 12 at each of its four corners, that is, the four dots 12 form a rectangle with the opening 11 at its center, or each dot 12 can be provided with an opening 11 at each of its four corners. Through the above arrangement, the blue light 21 can be fully absorbed.
[0037] As a further embodiment, among the dots 12 arranged around the opening 11 , the dots 12 on the same side have the same area.
[0038] Among them, Figure 2 As shown, the area of the dots 12 located outside the opening 11 is the same and larger than the area of the dots 12 located inside the opening 11, and the area inside the opening 11 is also the same.
[0039] As a further embodiment, the dots 12 are silk-screen dots.
[0040] As a further embodiment, the material of the silk-screen dots at least includes fluorescent powder.
[0041] The material of the silk-screen dots at least includes fluorescent powder, which can absorb blue light 21 and stimulate yellow light 22, or can also stimulate green light and red light.
[0042] The utility model also provides a backlight module, which includes the reflective film structure described in any one of the above embodiments, wherein the reflective film structure includes a reflective film 10 and a gradient structure; a plurality of openings 11 are provided on the reflective film 10; the gradient structure includes a plurality of dots 12 with different areas, wherein the dots 12 are used to absorb blue light 21 and excite yellow light 22, and a plurality of the dots 12 are arranged on the reflective film 10 from outside to inside along the reflective film 10 according to their area sizes, and each of the dots 12 is adjacent to at least one of the openings 11.
[0043] Specifically, the reflective film structure includes a reflective film 10 and a gradient structure. The reflective film 10 is provided with a plurality of openings 11. Figure 1 and Figure 2 As shown, a plurality of openings 11 are evenly formed on the reflective film 10 .
[0044] The gradient structure includes a plurality of dots 12 of different areas, and the plurality of dots 12 are arranged on the reflective film 10 from the outside to the inside according to the size of the area. Figure 2 As shown, the dots 12 with the largest area are located at the outermost side of the reflective film 10, and the area of the dots 12 gradually decreases from the outer side to the inner side of the reflective film 10. Of course, according to actual needs, the dots 12 with the largest area can be arranged on the inner side of the reflective film 10, and the dots 12 with the smallest area can be arranged on the outermost side of the reflective film 10.
[0045] like Figure 1As shown, the middle area of the reflective film 10 is not provided with dots 12. Usually, the area where dots 12 need to be set can be adjusted accordingly according to the size of the area where the bluing phenomenon occurs. The larger the area where the bluing phenomenon occurs, the larger the area where dots 12 need to be set.
[0046] The openings 11 on the reflective film 10 are used to allow the blue light 21 to pass through. When the blue light 21 passes through the openings 11 of the reflective film 10, at least one mesh point 12 is arranged around each opening 11. The mesh point 12 can absorb the blue light 21 and excite the yellow light 22, thereby eliminating the bluing phenomenon. Figure 3 As shown, the blue light 21 passes through the opening 11 and is absorbed by the mesh dots 12 located near the opening 11 , while the mesh dots 12 excite the yellow light 22 outward.
[0047] The utility model also provides a medical display, which comprises the backlight module described in any one of the above embodiments.
[0048] The reflective film structure, backlight module and medical display disclosed by the utility model can solve the blueing phenomenon of the backlight module with a small OD value by arranging multiple mesh points to absorb blue light and stimulate yellow light.
[0049] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A reflective film structure, characterized in that: include: A reflective film, wherein a plurality of openings are provided on the reflective film; A gradient structure includes a plurality of dots of different areas, the dots are used to absorb blue light and excite yellow light, the plurality of dots are arranged on the reflective film from the outside to the inside along the reflective film according to their area sizes, and each of the dots is adjacent to at least one of the openings.
2. The reflective film structure according to claim 1, characterized in that: The plurality of mesh points are arranged on the reflective film in order from large to small in area and from outside to inside.
3. The reflective film structure according to claim 2, characterized in that: The reflective film includes a middle portion and a peripheral portion disposed around the middle portion; The mesh points are arranged on the outer portion in sequence from the outside to the inside.
4. The reflective film structure according to claim 3, characterized in that: The mesh points and openings on the peripheral portion are arranged alternately.
5. The reflective film structure according to claim 4, characterized in that: Each of the openings in the peripheral portion is surrounded by four mesh points.
6. The reflective film structure according to claim 5, characterized in that: The areas of the dots located on the same side among the dots arranged around the opening are the same.
7. The reflective film structure according to claim 1, characterized in that: The dots are silk-screen dots.
8. The reflective film structure according to claim 7, characterized in that: The material of the silk-screen dots at least includes fluorescent powder.
9. A backlight module, characterized in that: It comprises the reflective film structure as described in any one of claims 1 to 8.
10. A medical display, characterized in that: Comprising the backlight module as claimed in claim 9.