CN216927140U - Light guide member and display device - Google Patents
Light guide member and display device Download PDFInfo
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- CN216927140U CN216927140U CN202123455912.2U CN202123455912U CN216927140U CN 216927140 U CN216927140 U CN 216927140U CN 202123455912 U CN202123455912 U CN 202123455912U CN 216927140 U CN216927140 U CN 216927140U
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Abstract
The utility model discloses a light guide component and a display device, wherein the light guide component comprises a main body with a wedge-shaped structure, the main body comprises a reflecting plane and a light-emitting plane which are opposite, a first end part and a second end part; the second end part is used for guiding light rays, the reflecting plane is used for reflecting the guided light rays to the light emitting plane, and the light emitting plane is used for diffusing and transmitting the reflected light rays outwards; the surface roughness of the reflecting plane is less than a first threshold value; the surface roughness of the light exit plane is larger than a second threshold value, wherein the second threshold value is larger than the first threshold value. The light guide component and the display device can remarkably improve the applicability of the light guide component in a narrow space by arranging the wedge-shaped structure main body, so that the application range of the light guide component is greatly expanded; meanwhile, by arranging the reflecting plane and the light-emitting plane with different surface roughnesses, the light loss in the light guide process can be effectively reduced respectively, and the good light homogenizing effect in the light-emitting transmission process is ensured.
Description
Technical Field
The utility model relates to the technical field of optical illumination, in particular to a light guide component and display equipment.
Background
The existing instruments and equipment in many fields have the development trend of miniaturization, but the light source area of the rear projection type light guide component is large, so that the volume of the rear projection type light guide component is large, the rear projection type light guide component cannot be integrated into precise instruments and equipment in the fields of medical treatment, measurement and the like, and the illumination requirements of the rear projection type light guide component are met. In contrast, in the prior art, the light guide plate is generally densely covered with spherical surfaces on the exit surface, and illumination homogenization is realized by transmitting light through the prism surface mesh points, which is not only complex in structure but also high in cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a light guide component and a display device, aiming at overcoming the defect that a rear projection type lighting component in the prior art cannot be integrated in a narrow space.
The utility model solves the technical problems through the following technical scheme:
the utility model provides a light guide component which comprises a main body with a wedge-shaped structure, wherein the main body comprises a reflecting plane and a light-emitting plane which are opposite, and a first included angle is formed between the reflecting plane and the light-emitting plane;
the side, close to the light-emitting plane, of the reflection plane is a first end of the main body, and the first end is intersected with the reflection plane and the light-emitting plane respectively;
the side, far away from the reflection plane and the light-emitting plane, of the reflection plane is a second end portion of the main body, and the second end portion is intersected with the reflection plane and the light-emitting plane respectively;
the second end is used for guiding light, the reflecting plane is used for reflecting the guided light to the light-emitting plane, and the light-emitting plane is used for diffusing and transmitting the reflected light outwards;
the surface roughness of the reflecting plane is smaller than a first threshold value; the surface roughness of the light exit plane is greater than a second threshold, wherein the second threshold is greater than the first threshold.
Preferably, the light guide member further includes a support portion disposed on the bottom surface of the second end portion and integrally formed with the second end portion.
Preferably, the first included angle is 2-15 °.
Preferably, the distance from the first end to the second end of the reflecting plane is 20mm to 25 mm.
Preferably, the light source further comprises a light homogenizing film, and the light homogenizing film is used for covering the light emitting plane.
Preferably, the reflective film is used for covering the reflective plane.
The utility model also provides a display device, which comprises a liquid crystal screen, a touch screen, a light source device and the light guide component;
the touch screen and the liquid crystal screen are arranged in parallel, and a crack space is formed;
the first end part of the light guide component is embedded in the crack space;
the light emitting plane of the light guide component is attached to the touch screen;
the light source device is disposed outside the second end of the main body of the light guide member.
Preferably, the light source device is an LED lamp set; the LED lamp set is laid at the second end part of the main body of the light guide component so as to enable the light emitting direction to face the crack space.
Preferably, the touch screen comprises a text imprinting area; the character imprinting area is correspondingly arranged in the projection area of the touch screen according to the emergent light of the reflecting plane of the light guide component.
Preferably, the distance between the reflecting plane of the light guide member and the liquid crystal panel is not less than 0.2 mm.
The positive progress effects of the utility model are as follows: the light guide component and the display device can remarkably improve the applicability of the light guide component in a narrow space by arranging the wedge-shaped structure main body, so that the application range of the light guide component is greatly expanded; meanwhile, by arranging the reflecting plane and the light-emitting plane with different surface roughnesses, the light loss in the light guiding process can be effectively reduced respectively, and the good light homogenizing effect in the light-emitting transmission process is ensured.
Drawings
Fig. 1 is a schematic structural view of a light guide member in embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a light guide member in accordance with a preferred embodiment of embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of a display device in embodiment 2 of the present invention.
Fig. 4 is a schematic structural diagram of a display device in embodiment 2 of the present invention.
Fig. 5 is a top view of the display device in embodiment 2 of the present invention.
Detailed Description
The utility model is further illustrated by the following examples, which are not intended to limit the utility model thereto.
Example 1
Referring to fig. 1 and 2, the present invention provides a light guide member, including a main body 1 having a wedge-shaped structure, where the main body 1 includes a reflection plane 2 and a light-emitting plane 3 opposite to each other, and a first included angle is formed between the reflection plane 2 and the light-emitting plane 3; the side, close to the reflection plane 2 and the light-emitting plane 3, of the main body 1 is a first end part 4, and the first end part 4 is intersected with the reflection plane 2 and the light-emitting plane 3 respectively; the side, far away from the reflection plane 2 and the light-emitting plane 3, of the reflection plane 2 is a second end part 5 of the main body 1, and the second end part 5 is respectively intersected with the reflection plane 2 and the light-emitting plane 3; the second end part 5 is used for guiding light rays, the reflecting plane 2 is used for reflecting the guided light rays to the light-emitting plane 3, and the light-emitting plane 3 is used for diffusing and transmitting the reflected light rays outwards; the surface roughness of the reflecting plane 2 is less than a first threshold value; the surface roughness of the light exit plane 3 is larger than a second threshold value, wherein the second threshold value is larger than the first threshold value.
The light guide member may generally employ a material including, but not limited to, PMMA (polymethyl methacrylate, i.e., acryl or plexiglass) or PC (Polycarbonate, i.e., PC plastic). The body 1 is wedge-shaped with a thin end, the first end 4, and a thick end, the second end 5. The reflecting plane 2 and the light exit plane 3 are oppositely arranged and converge from the second end 5 to the first end 4 with a first angle. The reflection plane 2 is used for reflecting the guided light to the light-emitting plane 3, and the light-emitting plane 3 is used for diffusing and transmitting the reflected light outwards. It will be appreciated that the reflecting plane 2 should be arranged at an angle to the direction of incidence of the light rays, as shown in fig. 1, in order to reflect the introduced light rays.
In order to reduce the light loss during reflection, the surface roughness of the reflection plane 2 is smaller than a first threshold value, which may be set to Ra (the unit of surface roughness specified in GB/T1031-2009 product geometric and technical specification surface structure profile method surface roughness parameters and their values and in GB/T131-2006 ISO 1302:2002 surface structure representation) of 3.2 μm (micrometers), i.e. the reflection plane 2 is a smooth surface with Ra < 3.2 μm. Meanwhile, in order to ensure the light uniformizing effect when the light is transmitted through the light-emitting plane 3, the second threshold may be set to Ra ═ 5 μm, i.e. the light-emitting plane 3 is a rough surface with Ra > 5 μm, and preferably, the surface roughness of the light-emitting plane 3 may be set to 5 μm < Ra < 100 μm.
In a preferred embodiment, the light guide member further includes a support portion 6, and the support portion 6 is disposed on a bottom surface of the second end portion 5 and is integrally formed with the second end portion 5. It will be appreciated that fig. 1 shows only one implementation of the support portion 6, and that the specific structure of the support portion 6 can be flexibly configured to better match the support object for supporting the light guide member for better support purposes; while remaining integrally formed with the second end portion 5 to ensure the effect of light incidence and reflection.
In a preferred embodiment, the first included angle is 2 ° to 15 °; the distance L from the first end 4 to the second end 5 of the reflecting plane 2 is 20mm to 25 mm. The first included angle may be set according to a practical application scenario of the light guide component, for example, the first included angle is adjusted according to a specific shape of a narrow space into which the thin end of the wedge-shaped light guide component, that is, the first end portion 4, protrudes. And can understand, to the incident light of the same intensity, the printing opacity light intensity and the distance L and the first contained angle of second tip 5 all are positive correlation, can carry out the linkage setting to first contained angle and reflecting plane 2 from first tip 4 to the distance L of second tip 5 according to the demand of transmission light intensity.
In a preferred embodiment, the light guide member further includes a light uniformizing film 7, and the light uniformizing film 7 covers the light exit plane 3. The light uniformizing film 7 can further enlarge the light uniformizing area of the light guide member to further improve the light uniformizing effect. Preferably, the light homogenizing film 7 can be a transmissive diffusion film, which plays a role of correcting the light diffusion angle, so that the light radiation area is increased, and the uniformity is better.
As a preferred embodiment, the light guide component further includes a reflective film 8, the reflective film 8 is used for covering the reflective plane 2, and on the premise that the light entering and the light exiting of the light guide component are not affected, the reflective film 8 can be disposed on the reflective plane 2, and can also be disposed in an area of the light exiting plane 3 except for the light homogenizing film 7, so as to improve the light energy utilization rate in the whole light guide process. It is understood that the light unifying film 7 and the reflecting film 8 cover the outside of the solid light guide member.
The light guide component of the embodiment can remarkably improve the applicability of the light guide component in a narrow space by arranging the wedge-shaped structure main body, thereby greatly expanding the application range of the light guide component; meanwhile, by arranging the reflecting plane and the light-emitting plane with different surface roughnesses, the light loss in the light guide process can be effectively reduced, the light energy utilization rate is improved, and a good light homogenizing effect is achieved in the light-emitting transmission process.
Example 2
Referring to fig. 3 to 5, the present invention provides a display device, which includes a liquid crystal panel 11, a touch panel 12, a light source device 13, and the light guide member. The touch screen 12 and the liquid crystal screen 11 are arranged in parallel and form a crack space 50; the first end portion 4 of the light guide member is embedded in the slit space 50; the light-emitting plane 3 of the light guide component is attached to the touch screen 12; the reflecting plane 2 of the light guide member abuts against the liquid crystal panel 11; the light source device 13 is disposed outside the second end portion 5 of the main body of the light guide member.
The display device of the present embodiment is implemented based on the light guide component in embodiment 1, and the display device implements a touch function through the touch screen 12 and implements a video image playing and displaying function through the liquid crystal screen 11; the slit space 50 formed by the parallel arrangement of the touch screen 12 and the liquid crystal screen 11 is narrow, and the first end portion 4 is inserted into the slit space 50 through the wedge-shaped arrangement of the light guide member to realize light transmission in the direction of the touch screen 12. Preferably, the interval of the slit space 50, i.e., the distance between the touch panel 12 and the liquid crystal panel 11, is not more than 2 mm. Specifically, the light-emitting plane 3 of the light guide member is attached to the touch screen 12; optionally, the light guide member includes a light homogenizing film 7 covering the light exit plane 3, that is, the light homogenizing film 7 is attached to the touch screen 12. Preferably, the interval between the reflection plane 2 of the light guide member and the liquid crystal panel 11 is not less than 0.2mm, so that it can be used as a reserved assembly gap. Abutting; alternatively, the support portion 6 of the light guide member is also erected on the support object, keeping the light guide member structurally stable.
The light source device 13 is arranged outside the second end 5 of the main body of the light guide, preferably, referring to the top view of the display device shown in fig. 5, the light source device 13 is a LED lamp set; the LED lamp set is laid at the second end 5 of the main body of the light guide member so that the incident light direction faces the crack space 50, and the lamp set contributes to uniformity of the incident light intensity and ensures a light-transmitting rear projection effect. In a preferred embodiment, the touch screen 12 includes a text imprinting area 14; the character imprinting area 14 is disposed in the projection area of the outgoing light of the reflection plane 2 of the light guide component on the touch screen 12, as shown in fig. 5, it can be understood that the character imprinting area 14 is not larger than the projection area of the outgoing light of the reflection plane 2 on the touch screen 12, and if the light-emitting plane 3 is pasted with the light-homogenizing film 7, the coverage area of the light-homogenizing film 7 on the light-emitting plane 3 is preferably set to be larger than the projection area of the character imprinting area 14 on the light-emitting plane 3, so as to ensure the light-homogenizing effect of back-projecting light to the character imprinting area 14.
The display device of the embodiment can remarkably improve the applicability of the light guide component in a narrow space by arranging the wedge-shaped structure main body, thereby greatly expanding the application range of the display device; meanwhile, by arranging the reflecting plane and the light-emitting plane with different surface roughnesses, the light loss in the light guide process can be effectively reduced respectively, and the good light homogenizing effect in the light-emitting transmission process is ensured.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.
Claims (10)
1. A light guide member, comprising a body having a wedge-shaped structure, the body including opposing reflecting planes and a light exit plane, the reflecting planes and the light exit plane forming a first included angle therebetween;
the side, close to the light-emitting plane, of the reflection plane is a first end of the main body, and the first end is intersected with the reflection plane and the light-emitting plane respectively;
the side, far away from the reflection plane and the light-emitting plane, of the reflection plane is a second end portion of the main body, and the second end portion is intersected with the reflection plane and the light-emitting plane respectively;
the second end is used for guiding light, the reflecting plane is used for reflecting the guided light to the light-emitting plane, and the light-emitting plane is used for diffusing and transmitting the reflected light outwards;
the surface roughness of the reflecting plane is smaller than a first threshold value; the surface roughness of the light exit plane is greater than a second threshold, wherein the second threshold is greater than the first threshold.
2. A light guide member as defined in claim 1, further comprising a support portion provided on a bottom surface of the second end portion and formed integrally with the second end portion.
3. A light guide member as defined in claim 1, wherein the first included angle is 2 ° to 15 °.
4. A light guide member as defined in claim 1, wherein the reflecting plane has a distance of 20mm to 25mm from the first end portion to the second end portion.
5. A light guide member as defined in claim 1, further comprising a light uniformizing film for covering the light exit plane.
6. A light guide member as defined in claim 1, wherein the light guide member further comprises a reflective film for covering the reflective plane.
7. A display device, characterized in that the display device comprises a liquid crystal screen, a touch screen, a light source device and a light guide member as claimed in any one of claims 1 to 6;
the touch screen and the liquid crystal screen are arranged in parallel, and a crack space is formed;
the first end part of the light guide component is embedded in the crack space;
the light emitting plane of the light guide component is attached to the touch screen;
the light source device is disposed outside the second end of the main body of the light guide member.
8. The display device of claim 7, wherein the light source device is a set of LED lights; the LED lamp set is laid at the second end part of the main body of the light guide component so as to enable the light emitting direction to face the crack space.
9. The display device of claim 7, wherein the touch screen includes a text imprinting area; the character imprinting area is correspondingly arranged in the projection area of the touch screen according to the emergent light of the reflecting plane of the light guide component.
10. The display device according to claim 9, wherein a distance between the reflection plane of the light guide member and the liquid crystal panel is not less than 0.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123455912.2U CN216927140U (en) | 2021-12-31 | 2021-12-31 | Light guide member and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123455912.2U CN216927140U (en) | 2021-12-31 | 2021-12-31 | Light guide member and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216927140U true CN216927140U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123455912.2U Active CN216927140U (en) | 2021-12-31 | 2021-12-31 | Light guide member and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216927140U (en) |
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2021
- 2021-12-31 CN CN202123455912.2U patent/CN216927140U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220831 Address after: Room 316, Building 1, No. 351, Guoshoujing Road, China (Shanghai) Pilot Free Trade Zone, Pudong New Area, Shanghai, 201203 Patentee after: Shanghai Mozhuo Biotechnology Co.,Ltd. Address before: 314501 No. 455 Heshun Road, Wuzhen Town, Tongxiang City, Jiaxing City, Zhejiang Province Patentee before: Mezhuo Biotechnology (Zhejiang) Co.,Ltd. |