CN116559991A - Photoconductive element and display device comprising same - Google Patents
Photoconductive element and display device comprising same Download PDFInfo
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- CN116559991A CN116559991A CN202210104062.1A CN202210104062A CN116559991A CN 116559991 A CN116559991 A CN 116559991A CN 202210104062 A CN202210104062 A CN 202210104062A CN 116559991 A CN116559991 A CN 116559991A
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- 239000004973 liquid crystal related substance Substances 0.000 claims description 7
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- 239000000463 material Substances 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 2
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- 229920002223 polystyrene Polymers 0.000 claims 1
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a photoconductive element and a display device. The light guide element comprises a U-shaped light coupling unit and a main body unit; the main body unit is provided with a first optical surface and a second optical surface which are opposite to each other, and a third optical surface and a fourth optical surface which are opposite to each other; the U-shaped light coupling unit comprises a base, a first leading part and a second leading part. The base is connected with the main body unit, and the first leading part and the second leading part are provided with opposite ends; the first leading part is provided with a first light incident surface and a first side surface which are connected, and the second leading part is provided with a second light incident surface and a second side surface which are connected; wherein the included angle theta between the first side surface and the third optical surface connected with the first side surface 1 An included angle theta between the extension of the first light incident surface and the third optical surface 2 Included angle theta between the second side face and the fourth optical face connected with the second side face 1 ' and the second light incident surface extends to form an included angle theta with the fourth optical surface 2 ' satisfy the following relation: an included angle theta of 0 DEG or less 1 Included angle theta 1 ’<Included angle theta 2 Included angle theta 2 ’<180°。
Description
Technical Field
The present invention relates to a light guiding element and a display device including the same, and more particularly, to a light guiding element equipped with a light-emitting diode (LED) and a display device including the same.
Background
The development of surface light sources using LEDs as light sources and light guide elements as light guide media has been a very common technology, and the above technology can be applied to electronic products such as displays, lighting devices, household appliances, and the like. Since the light emission luminance of a single LED has been improved, the number of LEDs used has been reduced when used as a light source of the aforementioned electronic product. However, LEDs belong to point light sources, the light emission type of which is a fan emission, each LED has a certain light emitting angle (light intensity half angle is about ±50°), so when the light emitting angles of the LEDs are not overlapped, a dark line is easily generated between adjacent LEDs, and a hot spot (hot spot) with uneven brightness appears in a region close to the LEDs.
The light guide element plays a key role in order to make the final surface light source emit light with uniform brightness. Generally, manufacturers complicate the optical design of light guide elements or attempt to match the light guide elements with various optical films, so that the production mold of the light guide elements needs to be adjusted correspondingly, which results in the problems of time consumption and low cost in developing the electronic products.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a light guide element capable of forming a planar light source with uniformly distributed light, so as to reduce occurrence of hot spot.
Another object of the present invention is to provide a light guiding element, which has the advantages of simplified optical design and easy control of manufacturing precision, so that the process steps of the light guiding element in the prior art can be saved, thereby reducing the manufacturing cost of the display device in the prior art, reducing the resource waste, improving the cost effectiveness, and having high market potential.
In order to achieve the above-mentioned objective, the present invention provides a light guiding element, which includes a main body unit and a U-shaped light coupling unit. The main body unit is provided with a first optical surface and a second optical surface which are opposite, and the distance between the first optical surface and the second optical surface is the thickness of the main body unit; meanwhile, the main body unit is provided with a third optical surface and a fourth optical surface which are opposite, and the third optical surface and the fourth optical surface are perpendicular to the first optical surface and the second optical surface. The U-shaped light coupling unit comprises a base part, a first leading part and a second leading part; the base part of the U-shaped light coupling unit is connected with the main body unit and is provided with a guide surface opposite to the main body unit; the first leading part and the second leading part are respectively arranged on the phase of the base partThe guide surface of the base is connected with the first leading part and the second leading part respectively at two ends. The first leading part is provided with a first side surface and a first light incident surface, the first side surface is respectively connected with the third optical surface and the first light incident surface, the second leading part is provided with a second side surface and a second light incident surface, and the second side surface is respectively connected with the fourth optical surface and the second light incident surface; an angle θ between the first side surface of the first leading portion and the third optical surface of the main body unit 1 And the first light incident surface of the first leading part extends to form an included angle theta with the third optical surface of the main body unit 2 The following relation (I) is satisfied: an included angle theta of 0 DEG or less 1 <Included angle theta 2 <180 °; and an angle θ between the second side of the second guiding portion and the fourth optical surface of the main body unit 1 ' an included angle θ between the second light incident surface of the second front guide portion and the fourth optical surface of the main body unit 2 ' satisfy the following relation (II): an included angle theta of 0 DEG or less 1 ’<Included angle theta 2 ’<180°。
The invention can receive the light entering from the side direction by outwards inclining and convexly arranging the first leading part and the second leading part by the U-shaped light coupling unit with special configuration, and the light is distributed in the U-shaped light coupling unit by the guide surface in a first stage, so that the light enters the main body unit in a linear distribution mode, and is distributed again in the main body unit, therefore, the light finally penetrating out of the light guide element is gathered to form a surface light source, and the surface light source can emit light with uniform brightness.
Preferably, the base, the first leading portion and the second leading portion of the U-shaped light coupling unit are integrally formed. Preferably, the U-shaped light coupling unit has a symmetrical shape, so that the first leading part and the second leading part of the U-shaped light coupling unit have the same shape and the included angle theta 1 And the included angle theta 1 ' equal, and the angle theta 2 And the included angle theta 2 'equal'.
Preferably, the included angle theta 1 Is 0 to 85 °; preferably, the included angle theta 1 Is 30 to 50. PreferablyOf the included angle theta 2 Is greater than 90 ° to 175 °; preferably, the included angle theta 2 Is 105 to 160.
Preferably, the included angle theta 1 The angle of' is 0 ° to 85 °; more preferably, the included angle theta' 1 Is 30 to 50. Preferably, the included angle theta 2 The angle of' is greater than 90 ° to 175 °; preferably, the included angle theta 2 The angle of' is 105 to 160.
In the present invention, the guiding surface may be a plane or a curved surface, but is not limited thereto.
In some embodiments, the guide surface is a planar surface.
In other embodiments, the guiding surface is a curved surface; preferably, the radius of curvature of the curved surface is 30 millimeters (mm) to 1000mm; more preferably, the curved surface has a radius of curvature of 40mm to 500mm. Preferably, the curved surface protrudes in a direction away from the main unit, i.e. the curved surface protrudes in a direction opposite to the extension direction of the main unit. When the guide surface is a curved surface, the light rays entering the guide surface can be enabled to have more diversified incident angles, so that better dispersion effect can be provided for the light rays, and the light rays are distributed more uniformly when entering the main body unit. Furthermore, the distribution angle of the light entering the U-shaped light coupling unit can be regulated and controlled by adjusting the curvature of the guide surface, so that the development requirements of various electronic products can be more effectively matched.
Preferably, the reflectivity of the guiding surface is more than 50%, but is not limited thereto; more preferably, the reflectivity of the guide surface is more than 80%, but not limited thereto.
According to the present invention, it is preferable that the body unit has a rectangular parallelepiped shape, but not limited thereto. Therefore, the thickness of the main body unit is uniform as indicated by the distance between the first optical surface and the second optical surface of the main body unit, and both the first optical surface and the second optical surface are rectangular. In addition, the third optical surface and the fourth optical surface perpendicular to the first optical surface and the second optical surface are rectangular.
In some embodiments, the light guiding element may further include a plurality of microstructure units having a feature size of 1 micrometer (μm) to 300 μm formed on any surface of the light guiding element in a direct molding manner, so that the light irradiated to the light guiding element is reflected in a diffuse manner to a great extent, and thus a more uniformly diffused light-emitting distribution is obtained.
In particular, the plurality of microstructure elements may each independently have any geometry. Preferably, the geometry of each microstructure unit is independently selected from one of the group consisting of: the device comprises an arc body, a cone, a pyramid, an arc strip and a prismatic strip. The plurality of microstructure elements may have the same geometry, e.g., the plurality of microstructure elements have the same geometry, but the plurality of microstructure elements may or may not all be the same size. Alternatively, the plurality of microstructure elements may have at least two geometries, but are not limited thereto.
In some embodiments, the plurality of microstructure elements may be arranged in a regular manner, i.e., formed in a matrix on the surface; in other embodiments, the plurality of microstructure elements are arranged in an irregular manner.
In some embodiments, the plurality of microstructure elements may be disposed on any surface of the U-shaped light coupling element. For example, the guiding surface may be formed with a plurality of microstructure elements, e.g. the inner side of the guiding surface forms the plurality of microstructure elements. In addition, a plurality of microstructure units can be formed on other surfaces of the base of the U-shaped light coupling unit (i.e. the surfaces connected with the main body unit).
In other embodiments, the plurality of microstructure elements can be disposed on any of the surfaces of the body element, e.g., an inner side of any of the aforementioned surfaces forms the plurality of microstructure elements. For example, at least one of the first optical surface and the second optical surface may be formed with a plurality of microstructure units; alternatively, at least one of the third optical surface and the fourth optical surface is formed with a plurality of microstructure units; or, the first optical surface, the second optical surface, the third optical surface and the fourth optical surface are all formed with a plurality of microstructure units.
According to the present invention, the material of the light guide member is not particularly limited. Preferably, the material of the light guide member includes polymethyl methacrylate (poly (methyl methacrylate), PMMA), polycarbonate (PC), methyl methacrylate-styrene copolymer (styrene methyl methacrylate copolymer, SMMA) or Polystyrene (PS), but is not limited thereto.
The invention also provides a reflective display device, which comprises: a reflective display panel (reflective display panel) and a light guide system; the light guide system is disposed over the reflective display panel. Wherein the light guiding system comprises a light guiding element as described above and a first light emitting element; the first light incident surface of the first leading part in the light guide element is used for receiving a plurality of light rays from the first light emitting element. Specifically, the light guiding element faces the reflective display panel with the first/second optical faces. When the light rays are emitted from the first light emitting element, the paths of the light rays sequentially pass through the first leading part of the U-shaped light coupling unit of the light guiding element, are turned to the guiding surface of the base part and then to the main body unit, the light rays are mainly emitted to the reflective display panel from the first optical surface/the second optical surface of the main body unit, and finally, the light rays are diffused and reflected from the reflective display panel and pass through the second optical surface/the first optical surface of the main body unit to eyes of a user.
Preferably, the light guiding system further comprises a second light emitting element; the second light incident surface of the second leading part in the light guide element is used for receiving a plurality of light rays from the second light emitting element.
Specifically, the first light emitting element and the second light emitting element each include a plurality of LEDs, and the plurality of LED light sources may be an LED polish rod or an LED array, but are not limited thereto. The plurality of LED light sources may be configured by LEDs of the same color light, or LEDs of multiple colors.
In some embodiments, the reflective display panel may be a liquid crystal display panel (liquid crystal display panel, LCD panel) or an electronic ink display panel (e-paper), but is not limited thereto.
Preferably, the reflective display panel and the light guide element are bonded by a polymer film. Preferably, the refractive index of the polymer film is 1.2 to 1.9, but is not limited thereto. For example, the polymer film may be a silicone based (PSA), acrylic based (pressure sensitive adhesive), polyurethane based (polyurethane based), or a silicone based (pressure sensitive adhesive, PSA), but is not limited thereto.
The invention further provides a transmissive display device, which comprises: a transmissive display panel (transmissive display panel) and a light guide system; the light guide system is arranged below the transmissive display panel. The light guide system may be referred to in the foregoing description of the light guide system in a reflective display device. Specifically, the light guiding element faces the transmissive display panel with the first optical surface. When the light rays are emitted from the first light emitting element, the paths of the light rays sequentially pass through the first front guide part of the U-shaped light coupling unit of the light guide element, the guide surface of the base part turns and then the light rays are emitted to the penetrating display panel mainly through the first optical surface of the main body unit, and finally the light rays are emitted to eyes of a user from the other side of the penetrating display panel relative to the light guide system.
In some embodiments, the transmissive display panel may be a liquid crystal display panel, but is not limited thereto.
Preferably, an optical film or a plurality of optical films may be interposed between the transmissive display panel and the first optical surface of the light guiding element. For example, the optical film may be a diffusion film, a brightness enhancing film, a polarizing film, or the like, but is not limited thereto.
Preferably, the transmissive display device further comprises a reflective layer disposed under the light guiding system.
Drawings
FIG. 1 is a schematic top view of a photoconductive element of embodiment 1;
FIG. 2 is a schematic side view of a photoconductive element of embodiment 1;
FIG. 3 is a schematic top view of a photoconductive element of embodiment 2;
FIG. 4 is a schematic side view of the photoconductive element of embodiment 1 applied to a reflective display device;
fig. 5 is a schematic side view of the photoconductive element of embodiment 1 applied to a transmissive display device.
Detailed Description
The following examples are put forth so as to provide those of ordinary skill in the art with a readily apparent to those of ordinary skill in the art from the disclosure herein and are intended to make and use the present invention without departing from the spirit of the invention.
Example 1
Referring to fig. 1 and 2, the light guiding element 10 of the present invention includes a U-shaped light coupling unit 11 and a main body unit 12.
The U-shaped light coupling unit 11 includes a first leading portion 111, a second leading portion 112 and a base portion 113 integrally formed. The base 113 has a guide surface 1131. The first leading portion 111 and the second leading portion 112 are disposed at opposite ends of the base 113 in an inclined manner, and the guiding surface 1131 of the base 113 is connected to the first leading portion 111 and the second leading portion 112. Moreover, the U-shaped light coupling unit 11 has a symmetrical shape, so that the first leading portion 111 and the second leading portion 112 of the U-shaped light coupling unit 11 have the same shape. In this embodiment, the guiding surface 113 is a plane.
The main body unit 12 is integrally formed with the base 113 of the U-shaped light coupling unit 11, and the main body unit 12 has an equal thickness to the first and second leading portions 111 and 112. The main body unit 12 has a first optical surface 121 and a second optical surface 122 opposite to each other, and a third optical surface 123 and a fourth optical surface 124 opposite to each other, wherein the third optical surface 123 and the fourth optical surface 124 are perpendicular to the first optical surface 121 and the second optical surface 122, respectively. The first optical surface 121 and the second optical surface 122 are parallel to the X-Y plane in fig. 1, the distance between the first optical surface 121 and the second optical surface 122 is the thickness of the main body unit 12, and the third optical surface 123 and the fourth optical surface 124 are parallel to the X-Z plane in fig. 1. The shape of the main body unit 12 is approximately cuboid, and thus, the shapes of the first optical surface 121, the second optical surface 122, the third optical surface 123 and the fourth optical surface 124 are all rectangular. The length of the first optical surface 121 is the length of the side of the main body unit 12 in the X-axis direction in fig. 1, and the width of the first optical surface 121 is the length of the side of the main body unit 12 in the Y-axis direction in fig. 1.
The first guiding portion 111 has a first light incident surface 1111 and a first side surface 1112, and the first side surface 1112 is respectively connected to the third optical surface 123 of the main unit 12 and the first light incident surface 1111; the second front portion 112 has a second light incident surface 1121 and a second side surface 1122, and the second side surface 1122 is connected to the fourth optical surface 124 and the second light incident surface 1121 of the main unit 12 respectively; wherein the first side 1112 forms an angle θ with the third optical surface 123 1 30 DEG, and an angle theta between the first incident surface 1111 and the third optical surface 123 2 100 °, thus satisfying the relation (I): an included angle theta of 0 DEG or less 1 <Included angle theta 2 <180 deg.. An angle θ between the second side 1122 and the fourth optical surface 124 1 ' 30 DEG, the second light incident surface 1121 extends at an angle θ with respect to the fourth optical surface 124 2 ' is 100 °, thus satisfying the relation (II): an included angle theta of 0 DEG or less 1 ’<Included angle theta 2 ’<180°。
Wherein the main material of the light guiding member 10 is polycarbonate, the reflectivity of the guiding surface 1131 is up to 40%.
In other embodiments, the main body unit 12 and the base 113 of the U-shaped light coupling unit 11 may not be integrally formed, and the thickness of the main body unit 12 may not be equal to the thickness of the first and second guiding portions 111 and 112.
In other embodiments, the light guiding element 10 may further include a plurality of micro-structural units (not shown) having a feature size of 1 μm to 300 μm formed on any surface of the light guiding element 10, such as inner sides of the guiding surface 1131, the first optical surface 121, the second optical surface 122, the third optical surface 123 and the fourth optical surface 124, but not limited thereto. The geometry of each microstructure unit may be independently selected from one of the group consisting of: the device comprises an arc body, a cone, a pyramid, an arc strip and a prismatic strip. In addition, the plurality of microstructure units may be arranged in a regular or random manner, and is not particularly limited.
Example 2
Referring to fig. 3, the photoconductive element 10' of embodiment 2 has a similar structure to the photoconductive element 10 of embodiment 1, and the main difference between embodiment 1 and embodiment 2 is that: a guide surface 1131 of the base 113. In the light guiding element 10' of embodiment 2, the guiding surface 1131 of the base 113 is a curved surface, which is convex in a direction away from the main body unit 12, and the radius of curvature of the curved surface is 100mm.
In other embodiments, the light guiding member 10 'may include a plurality of micro-structural units (not shown) having a feature size of 1 μm to 300 μm formed on any surface of the light guiding member 10' in a direct molding manner. The plurality of microstructure elements comprised by the light guiding element 10' may refer to the content of the light guiding element 10 described above.
Referring to fig. 1, 2 and 4, the present invention further provides a display device 1, which sequentially includes a reflective display panel 30, a polymer film 31 and a light guiding system 20 from bottom to top. The light guiding system 20 comprises the light guiding element 10 of embodiment 1, a first light emitting element 21 and a second light emitting element 22; the first light incident surface 1111 of the first guiding portion 111 of the light guiding element 10 is configured to receive the light beams from the first light emitting element 21, and the second light incident surface 1121 of the second guiding portion 112 is configured to receive the light beams from the second light emitting element 22. The first light emitting element 21 and the second light emitting element 22 each comprise a plurality of LEDs, and the first light emitting element 21 and the second light emitting element 22 are LED polish rods. The reflective display panel 30 is a liquid crystal display panel.
The light guiding element 10 faces the reflective display panel 30 with said second optical surface 122. When a plurality of light rays are emitted from the LED polish rods of the first light emitting element 21 and the second light emitting element 22, the paths of the light rays firstly pass through the first leading part 111 and the second leading part 112 of the U-shaped light coupling unit 11 of the light guiding element 10, and after being turned to the guiding surface 1131 of the base 113, the light rays reach the main body unit 12; then, the first optical surface 121 of the main body unit 12 can reflect light to the second optical surface 122 to form a surface light source to emit incident light L, the incident light L passes through the polymer film 31 and then enters the reflective display panel 30, and then the reflected light L' is diffused and reflected from the reflective display panel 30 to pass through the second optical surface 122 and the first optical surface 121 of the main body unit 12, and finally is received by eyes of a user.
Referring to fig. 1, 2 and 5, the present invention further provides a display device 1 'comprising, in order from bottom to top, the light guiding system 20, the multilayer optical film 32 and a transmissive display panel 30'. Wherein the light guiding system 20 comprises the light guiding element 10 of embodiment 1, and a first light emitting element 21 and a second light emitting element 22; the first light incident surface 1111 of the first guiding portion 111 of the light guiding element 10 is configured to receive the light beams from the first light emitting element 21, and the second light incident surface 1121 of the second guiding portion 112 is configured to receive the light beams from the second light emitting element 22. The first light emitting element 21 and the second light emitting element 22 each comprise a plurality of LEDs, and the first light emitting element 21 and the second light emitting element 22 are LED arrays. The transmission type display panel is a liquid crystal display panel. The multilayer optical film 32 may include a diffusion film, a brightness enhancing film, a polarizing film, etc., but is not limited thereto.
The light guiding element 10 faces the transmissive display panel 30' with the first optical face 121. When a plurality of light rays are emitted from the LED arrays of the first light emitting element 21 and the second light emitting element 22, the paths of the light rays first pass through the first leading portion 111 and the second leading portion 112 of the U-shaped light coupling unit 11 of the light guiding element 10, and after being turned to the guiding surface 1131 of the base 113, the light rays reach the main body unit 12; then, the surface light source formed by the first optical surface 121 of the main body unit 12 emits the incident light L, and the incident light L is mainly emitted upward from the first optical surface 121 of the main body unit 12 to the transmissive display panel 30', and then the transmitted light l″ passes through the transmissive display panel 30' from the other side of the light guide system 20, and is finally received by eyes of a user.
The present invention is not limited to the above-mentioned embodiments, but is capable of modification and variation in all embodiments without departing from the spirit and scope of the present invention.
Claims (15)
1. A light guide member, comprising:
a main body unit having a first optical surface and a second optical surface opposite to each other, wherein the distance between the first optical surface and the second optical surface is the thickness of the main body unit, and the main body unit has a third optical surface and a fourth optical surface opposite to each other, and the third optical surface and the fourth optical surface are perpendicular to the first optical surface and the second optical surface; and
a U-shaped light coupling unit comprising:
a base connected to the main body unit, the base having a guide surface opposite the main body unit;
a first leading part and a second leading part, which are respectively arranged at two opposite ends of the base part and are connected with the guide surface of the base part; the first leading part is provided with a first side surface and a first light incident surface, the first side surface is respectively connected with the third optical surface and the first light incident surface, the second leading part is provided with a second side surface and a second light incident surface, and the second side surface is respectively connected with the fourth optical surface and the second light incident surface;
wherein the first side surface of the first leading part forms an included angle theta with the third optical surface of the main body unit 1 And the first light incident surface of the first leading part extends to form an included angle theta with the third optical surface of the main body unit 2 The following relation (I) is satisfied: an included angle theta of 0 DEG or less 1 <Included angle theta 2 <180°；
An included angle theta between the second side surface of the second leading part and the fourth optical surface of the main body unit 1 ' an included angle θ between the second light incident surface of the second front guide portion and the fourth optical surface of the main body unit 2 ' satisfy the following relation (II): an included angle theta of 0 DEG or less 1 ’<Included angle theta 2 ’<180°。
2. The light guide member of claim 1, wherein said guide surface is a plane or a curved surface.
3. The light guide member of claim 2, wherein when said guide surface is a curved surface, a radius of curvature of said curved surface is 30 mm to 1000 mm.
4. The light guide element of claim 1, wherein the base portion, the first leading portion, and the second leading portion of the U-shaped light coupling unit are integrally formed.
5. The light guide element according to any one of claims 1 to 4, wherein the included angle θ 1 And the included angle theta 1 ' equal, the included angle theta 2 And the included angle theta 2 'equal'.
6. The light guide member of any one of claims 1 to 4, wherein said guide surface is formed with a plurality of microstructure elements; the geometry of each microstructure unit is independently selected from one of the group consisting of: the device comprises an arc body, a cone, a pyramid, an arc strip and a prismatic strip.
7. The light guide element according to any one of claims 1 to 4, wherein at least one of the first optical face and the second optical face is formed with a plurality of microstructure units; the geometry of each microstructure unit is independently selected from one of the group consisting of: the device comprises an arc body, a cone, a pyramid, an arc strip and a prismatic strip.
8. The light-guiding element according to any one of claims 1 to 4, wherein at least one of the third optical surface and the fourth optical surface is formed with a plurality of microstructure units; the geometry of each microstructure unit is independently selected from one of the group consisting of: the device comprises an arc body, a cone, a pyramid, an arc strip and a prismatic strip.
9. The light-guiding member according to any one of claims 1 to 4, wherein the material of the light-guiding member comprises polymethyl methacrylate, polycarbonate, methyl methacrylate-styrene copolymer or polystyrene.
10. A reflective display device, comprising:
a reflective display panel; and
a light guide system disposed over the reflective display panel;
wherein the light guiding system comprises a light guiding element as claimed in any of claims 1 to 9 and a first light emitting element; the first light incident surface of the first leading part in the light guide element is used for receiving a plurality of light rays from the first light emitting element.
11. The reflective display device of claim 10, wherein said light guide system further comprises a second light emitting element; the second light incident surface of the second leading part in the light guide element is used for receiving a plurality of light rays from the second light emitting element; the first light-emitting element and the second light-emitting element respectively comprise a plurality of light-emitting diodes, and the first light-emitting element and the second light-emitting element are light-emitting diode polished rods or light-emitting diode arrays.
12. The reflective display device of claim 10 or 11, wherein the reflective display panel is a liquid crystal display panel or an electronic ink display panel.
13. A transmissive display device, comprising:
a transmissive display panel; and
a light guide system disposed under the transmissive display panel;
wherein the light guiding system comprises a light guiding element as claimed in any of claims 1 to 9 and a first light emitting element; the first light incident surface of the first leading part in the light guide element is used for receiving a plurality of light rays from the first light emitting element.
14. The transmissive display device of claim 13, wherein the light guide system further comprises a second light emitting element; the second light incident surface of the second leading part in the light guide element is used for receiving a plurality of light rays from the second light emitting element; the first light-emitting element and the second light-emitting element respectively comprise a plurality of light-emitting diodes, and the first light-emitting element and the second light-emitting element are light-emitting diode polished rods or light-emitting diode arrays.
15. The transmissive display device of claim 13 or 14, wherein the transmissive display panel is a liquid crystal display panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104062.1A CN116559991A (en) | 2022-01-28 | 2022-01-28 | Photoconductive element and display device comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104062.1A CN116559991A (en) | 2022-01-28 | 2022-01-28 | Photoconductive element and display device comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116559991A true CN116559991A (en) | 2023-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210104062.1A Pending CN116559991A (en) | 2022-01-28 | 2022-01-28 | Photoconductive element and display device comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116559991A (en) |
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2022
- 2022-01-28 CN CN202210104062.1A patent/CN116559991A/en active Pending
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