Display screen
By adopting a character area design with an integral light guide and a microstructure element combination in the LCD screen, combined with the detachable and connected frame and display panel structure, the problem of poor character area hiding in the light source is closed. It also simplifies the fixation of the light guide structure, achieving high hiding and simple assembly effects.
Patent Information
- Application Number
- CN202420958331.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The existing LCD screens are difficult to hide the character area when the light source is turned off, and are easily observed in an environment where incident light is present, resulting in adverse conditions, such as incorrect judgment of the actual switching state; at the same time, the fixing of the light guide structure is complicated and the assembly is difficult. .
A display screen is designed, using an integral light guide and a detachable connection frame and display panel structure. The character area formed by the combination of microstructure elements is formed. The light emitter light is emitted into the integral light guide and then coupled to output through the character area to achieve high hiding. ; At the same time, through the detachable connection design, the fixing of the light guide is simplified and the assembly difficulty is reduced.
The high hiding of the character area under the light source is turned off, avoiding the occurrence of adverse situations; at the same time, the fixation of the light guide structure is simplified, and the convenience of assembly and overall use effect are improved.
Smart Images
Figure CN222482557U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a display screen. Background Art
[0002] With the development of display technology, the application of display devices is becoming more and more extensive, and people are getting more and more information through display devices. At present, the application of liquid crystal screens (LCD) has become quite popular. Different from the traditional vacuum picture tube screen (CRT), it is not only thin and light, but also has the advantages of not taking up space. The image resolution can be higher than that of vacuum picture tube screens. In addition, the power consumption is also less than that of vacuum picture tube screens, so LCD screens have gradually replaced vacuum picture tube screens.
[0003] The liquid crystal display screen in the prior art mainly uses LED as the backlight source and is made into a backlight board, that is, a light guide structure and a light source (LED light source) are used as the light source module of the display screen. For some specific applications of the above-mentioned products, such as display screens for vehicles, the prior art solutions usually realize display by selectively coupling out the light coupled from the light source to the end face of the light conductor through the surface structure on the main surface used as the display surface; generally, this method only partially provides an area with the surface structure to reproduce the symbol.
[0004] However, in the prior art such as the above, although the light source is turned off, the symbol can be visible in an environment with incident light (such as when sunlight shines into the interior of the vehicle), which may cause observers, especially vehicle drivers, to make undesirable situations such as misjudging the actual switch state.
[0005] In addition, it is difficult to provide a simple and effective fixation for the light guide structure in the light guide display screen of the prior art, and there are defects such as a relatively complex installation structure and high difficulty in assembly. Utility Model Content
[0006] In order to at least partially solve the deficiencies in the prior art, the main purpose of the utility model is to provide a display screen, in which the character area is highly concealed when the light source is turned off; at the same time, the display panel and the frame are detachably connected and can press the overall light guide to fix the overall light guide, which has the advantages of simple structure and easy assembly.
[0007] In order to achieve the above main purpose, the utility model provides a display screen, which includes a frame, a non-emissive display panel, a circuit board arranged with a light-emitting body, and at least one integral light guide; in the height direction, the display panel, the integral light guide and the frame are arranged in a stacked manner, the display panel and the frame are detachably connected together and the integral light guide is pressed and fixed; the circuit board is mounted on the display panel or the frame and is located beside the integral light guide; wherein the integral light guide is provided with a character area formed by a combination of microstructure graphic elements, and the light emitted by the light-emitting body is coupled out toward the display panel through the character area when it enters the integral light guide.
[0008] According to a specific implementation of the present invention, the number of the integral light guides is two or more, and the two or more integral light guides are stacked in the height direction; wherein adjacent integral light guides are spaced apart.
[0009] According to a specific embodiment of the utility model, it also includes an annular barrier, and adjacent integral light guides are separated by the barrier to form an air gap between the adjacent integral light guides.
[0010] According to a specific implementation of the present invention, in the height direction, the spacing between adjacent integral light guides is set not to exceed the thickness of the integral light guide.
[0011] According to a specific implementation of the utility model, a through mounting hole is provided on the integral light guide, and at least one of the display panel and the frame is provided with a connecting piece, which passes through the mounting hole and connects the display panel and the frame together.
[0012] According to a specific implementation of the utility model, the connecting piece is at least one of a snap-on connecting piece and a bolt connecting piece.
[0013] According to a specific embodiment of the utility model, the integral light guide includes a first main surface, a second main surface and a light guide body formed between the first main surface and the second main surface; the light guide body has a total reflection segment and a microstructure segment; in a first horizontal direction, the total reflection segment is arranged close to the circuit board, and the microstructure segment is located on the side of the total reflection segment away from the circuit board; wherein the character area is formed at the first main surface or the second main surface of the microstructure segment.
[0014] According to a specific implementation of the utility model, the character area is configured as an inner concave structure or an outer convex structure in the height direction.
[0015] According to a specific implementation of the present invention, the outer contour of the projection of the microstructure element on the horizontal plane is circular, elliptical, square or rectangular.
[0016] According to a specific implementation of the present invention, the cross-sectional shape of the microstructure element in the cross section in the height direction is trapezoidal, triangular, drum-shaped or hemispherical.
[0017] The utility model has the following beneficial effects: providing a highly concealable display screen, wherein the integral light guide is provided with a character area formed by a combination of microstructure elements, and when the light emitted by the luminous body enters the integral light guide, it is coupled and output toward the display panel through the character area; wherein the character area is formed by a combination of microstructure elements, which provides a reliable, accurate and reproducible light coupling effect, can have a variety of design forms and directions, and has strong practicality. In the utility model, when the light source is turned off, the character area has high concealment and will not be recognized or is basically not obvious.
[0018] In addition, the display panel and the frame are detachably connected and can compress the entire light guide to fix the entire light guide, which has the advantages of simple structure and convenient assembly, as well as low manufacturing cost and high light utilization rate.
[0019] In order to more clearly illustrate the purpose, technical solutions and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is the first stereogram of the display screen of the utility model;
[0021] Figure 2 It is a second stereoscopic image of the display screen of the utility model;
[0022] Figure 3 It is an exploded view of the display screen of the utility model;
[0023] Figure 4 It is a cross-sectional view of the installation side of the light emitting body of the display screen of the utility model;
[0024] Figure 5 is a perspective view of a first integral light guide;
[0025] Figure 6 is a front view of a first integral light guide;
[0026] Figure 7 is a perspective view of a second integral light guide;
[0027] Figure 8 is a schematic cross-sectional view of a first integral light guide;
[0028] Fig. 9 This is an enlarged view of the light-entering part;
[0029] Fig.10 is a diagrammatic representation of a character area and an enlarged view of a schematic microstructural element;
[0030] Fig.11 It is a schematic diagram of the projected outer contour of the microstructure element on the horizontal plane;
[0031] Fig.12 It is a schematic diagram of the cross section where the microstructure element is located in the height direction. DETAILED DESCRIPTION
[0032] In the following description, many specific details are explained in combination with embodiments to facilitate a full understanding of the present invention. However, it should be understood that the following embodiments and detailed descriptions are only for illustrative purposes and do not limit the scope of protection of the present invention.
[0033] The display screen of the utility model embodiment is as follows Figure 1-4 As shown, it includes a frame 20, a non-emissive display panel 30, a circuit board 40 arranged with a light-emitting body 41, and two integral light guides 10; wherein, in the height direction, the display panel 30, the two integral light guides 10 and the frame 20 are arranged in a stacked manner, the display panel 30 and the frame 20 are detachably connected together and press and fix the two integral light guides 10, and the circuit board 40 is installed on the display panel 30 or the frame 20 and is located next to the integral light guide 10.
[0034] Furthermore, two integral light guides 10 are stacked and spaced apart in the height direction; specifically, an annular barrier 50 is provided between the two integral light guides 10, and the barrier 50 is made of, for example, a transparent or translucent material, and adjacent integral light guides 10 are separated by the barrier 50 to form an air gap 60 between the adjacent integral light guides 10, and the air gap 60 is relatively closed. The shape of the barrier 50 is adapted to the outer contour of the integral light guide 10. Exemplarily, the thickness of the light guide body in the height direction is set to 0.2 mm to 20 mm, and the spacing between the two integral light guides 10 in the height direction (the thickness of the barrier 50) is preferably set not to exceed the thickness of the integral light guide 10.
[0035] In another optional embodiment, the number of the integral light guides 10 may be one, or three or more, which is not limited here and will not be elaborated.
[0036] like Figure 5-6 As shown, the integral light guide 10 is provided with a through mounting hole 15, the barrier 50 is also provided with a through hole 51 at a corresponding position, and at least one of the display panel 30 and the frame 20 is provided with a connecting member, which passes through the mounting hole 15 and connects the display panel 30 and the frame 20 together. Figure 3The connecting piece includes a snap connector 31 and a bolt 21. The snap connector 31 is arranged on the display panel 30 and corresponds to the mounting hole 15. During installation, the snap connector is first matched with the snap-in groove 22 on the frame 20 to form a pre-installation, and then the bolt 21 is used to pass through the mounting hole 15 and match with the threaded hole (not shown in the figure) on the display panel 30 to form a complete installation. This installation structure is simpler, more convenient, and is conducive to assembly. At the same time, it also helps to compress and fix the entire light guide 10 more evenly.
[0037] In the embodiment, the integral light guide 10 is provided with a character region 14 formed by combining microstructure elements 14a. When the light emitted by the illuminant 41 enters the integral light guide 10, it is coupled out through the character region 14 toward the display panel 30. The two integral light guides 10 are respectively as follows: Figure 5-6 The first integral light guide shown above and Figure 7 The second integral light guide shown is located below; wherein the character area 14 on the two integral light guides 10 is specifically as follows Figure 5-7 In the multiple examples shown in FIG. 1 , the specific form of the character area 14 can be set as needed, and this embodiment is not limited to this.
[0038] The following is a detailed introduction taking the first integral light guide located at the top as an example.
[0039] like Figure 5-6 , Figure 8 As shown, the integral light guide 10 includes a light guide body 10a, which has a first main surface 101 for emitting light, a second main surface 102 opposite to the first main surface 101 in the height direction, and a side edge surface 103 for letting in light; wherein the first main surface 101 and the second main surface 102 are both planar structures.
[0040] At least one light inlet portion 11 is provided at the side edge surface 103. Fig. 9 As shown, the light-inlet portion 11 is specifically a protrusion protruding outward in the first horizontal direction X; a groove 11a is provided on the light-inlet portion 11, and the groove 11a is used to match the light-emitting body 41 to provide a receiving space for the light-emitting body 41. Preferably, a plurality of staggered light-inlet planes are formed in the groove 11a, so that the light beam emitted by the light-emitting body enters the interior of the light guide body 10 more evenly through the side edge surface 103.
[0041] The plurality of light incident planes are respectively a first light incident plane 111, a second light incident plane 112, a third light incident plane 113 and a fourth light incident plane 114, and the first light incident plane 111, the second light incident plane 112, the third light incident plane 113 and the fourth light incident plane 114 are transitionally connected to form a W shape.
[0042] Please continue reading Figure 3The angle formed between the first light incident surface 111 and the second light incident surface 112 is A1, the angle formed between the second light incident surface 112 and the third light incident surface 113 is A2, and the angle formed between the third light incident surface 113 and the fourth light incident surface 114 is A3; wherein, the angle A2 is preferably set to be greater than the angle A1 and the angle A3, that is, the angle A2 is larger, preferably an obtuse angle, and an example is 95°-120°; the angle A1 and the angle A3 are smaller, preferably an acute angle, and an example is 45°-60°; preferably, the angle A1 and the angle A3 are the same in size.
[0043] The first light incident surface 111 and the fourth light incident surface 114 are preferably inclined relative to the first horizontal direction X, and the inclination angle range is 5°-20°.
[0044] like Figure 8 As shown, the light guide body 10 has a total reflection section 12 and a microstructure section 13; in the first horizontal direction X, the total reflection section 12 is close to the side edge surface 103 (disposed close to the circuit board 40), and the microstructure section 13 is located on the side of the total reflection section 12 away from the side edge surface 103 (disposed away from the circuit board 40); wherein the microstructure section 13 is provided with a character area 14 for coupling out the light incident through the side edge surface 103 from the microstructure section 13, and the character area 14 is formed on the first main surface 101 or the second main surface 102 by combining microstructure elements 14a. wherein, in the second horizontal direction Y, the number of the character areas 14 can be multiple, for example Figure 5-6 Four different types of character areas 14 are shown, and each character area 14 corresponds to a light entrance portion 11 .
[0045] Furthermore, the character region 14 is configured as an inner concave structure or an outer convex structure in the height direction, wherein a specific form of the combination of several microstructure elements 14a in the character region 14 is an array combination, such as Fig.10 As shown; illustratively, the maximum size of the microstructure element 14a in the horizontal plane is 150μm, and the spacing between adjacent microstructure elements 14a in the character area 14 in the first horizontal direction X and the second horizontal direction Y orthogonal to the first horizontal direction X is 50-150μm.
[0046] like Fig.11As shown, the outer contour of the projection of the microstructure element 14a in the horizontal plane in the embodiment is a circle, an ellipse, a square or a rectangle. When in use, the specific shape of the microstructure element 14a can be selectively set according to needs. For example, when there is no special requirement for the display direction, a circle / square can be selected, and when the brightness requirement in a certain direction is high, an ellipse / rectangle can be selected. In some embodiments, the microstructure element 14a can also be a hollow ring structure; wherein, compared with a solid structure, the hollow ring structure has better concealment; compared with a hollow ring structure, the solid structure has higher brightness; when in use, the specific structure of the microstructure element 14a can be selectively set according to specific needs.
[0047] The maximum height / depth H of the character area 14 is set to 120 μm; wherein the cross-sectional shape of the microstructure element 14a in the cross section in the height direction is preferably a trapezoid or a triangle, as shown in FIG. Fig.12 Several specific examples are shown. In other embodiments, the cross-sectional shape of the microstructure element 14a in the cross section in the height direction may also be a drum shape or a hemispherical shape.
[0048] In the embodiment, the character area 14 formed by the combination of microstructure elements 14a can be highly hidden and cannot be recognized or is basically not obvious when the light source is turned off, which is conducive to enriching the usage scenarios and is more suitable for the needs of modern new display screens.
[0049] Although the present invention is described above through embodiments, the above embodiments are only used to exemplarily describe the feasible implementation methods of the present invention, and are not used to limit the protection scope of the present invention. Any equivalent substitutions or changes made by those skilled in the art in accordance with the present invention should also be covered by the protection scope defined by the claims of the present invention.
Claims
1. A display screen, characterized in that: It comprises a frame, a non-emissive display panel, a circuit board with a light-emitting body arranged thereon, and at least one integral light guide; in the height direction, the display panel, the integral light guide, and the frame are arranged in a stacked manner, the display panel and the frame are detachably connected together and the integral light guide is pressed and fixed; the circuit board is mounted on the display panel or the frame and is located beside the integral light guide; wherein the integral light guide is provided with a character area formed by a combination of microstructure graphic elements, and when the light emitted by the light-emitting body enters the integral light guide, it is coupled out toward the display panel through the character area.
2. The display screen according to claim 1, characterized in that: The number of the integral light guides is two or more, and the two or more integral light guides are stacked in the height direction; wherein adjacent integral light guides are spaced apart.
3. The display screen according to claim 2, characterized in that: It also includes an annular barrier, and adjacent integral light guides are separated by the barrier to form air gaps between the adjacent integral light guides.
4. The display screen according to claim 2, characterized in that: In the height direction, the intervals between adjacent integral light guides are set not to exceed the thickness of the integral light guide.
5. The display screen according to claim 1, characterized in that: The integral light guide is provided with a through mounting hole, and at least one of the display panel and the frame is provided with a connecting piece, and the connecting piece passes through the mounting hole and connects the display panel and the frame together.
6. The display screen according to claim 5, characterized in that: The connecting piece is at least one of a snap-on connecting piece and a bolt connecting piece.
7. The display screen according to claim 1, characterized in that: The integral light guide comprises a first main surface, a second main surface and a light guide body formed between the first main surface and the second main surface; the light guide body has a total reflection segment and a microstructure segment; in a first horizontal direction, the total reflection segment is arranged close to the circuit board, and the microstructure segment is located on a side of the total reflection segment away from the circuit board; wherein the character area is formed on the first main surface or the second main surface of the microstructure segment.
8. The display screen according to claim 7, characterized in that: The character area is configured as a concave structure or a convex structure in the height direction.
9. The display screen according to claim 7, characterized in that: The projected outer contour of the microstructure element on the horizontal plane is circular, elliptical, square or rectangular.
10. The display screen according to claim 7, characterized in that: The cross-sectional shape of the microstructure element in the cross section in the height direction is trapezoidal, triangular, drum-shaped or hemispherical.