Electronic device

Abstract

An electronic device includes a light adjusting element and a light source providing element. The light source providing element is disposed below the light adjusting element and includes a light guide plate, a light source, a first prism structure, a second prism structure, and a third prism structure. The first prism structure is disposed on the light guide plate and faces the light guide plate. The second prism structure is disposed on the first prism structure and faces the light adjusting element. The third prism structure is disposed on the second prism structure and faces the light adjusting element. The extension direction of the first prism structure is perpendicular to the extension direction of the light source. The included angle between the extension direction of the second prism structure and the extension direction of the light source is 45 degrees or 135 degrees. The extension direction of the third prism structure is not perpendicular to the extension direction of the second prism structure.

Description

Technical Field

[0001] This application relates to an electronic device, and more particularly to the technology related to a light source providing element for the electronic device. Background Technology

[0002] To achieve thinness and high efficiency (e.g., low power consumption), current electronic devices utilize multiple optical films along the light path of their light sources. Some of these films have specialized beam-splitting structures on their surfaces. For example, a large number of specially shaped beam-splitting structures, such as numerous pyramid-shaped structures (hereinafter referred to as pyramid structures), are used on the lower optical film for beam splitting. This design allows light from the light source to be split by the lower pyramid-shaped optical film after entering the light guide plate, and then collected by the upper optical film (e.g., a prism-shaped optical film). This ensures the light is primarily distributed within the user's direct viewing angle, achieving high light extraction efficiency. However, the pyramid structure design is complex, leading to higher production costs. Furthermore, the pyramid structure is prone to causing a yellow tint problem, such as noticeable color shift within the direct viewing angle of the electronic device.

[0003] Therefore, a novel electronic device is needed to improve the above problems. Summary of the Invention

[0004] This application provides an electronic device comprising a light adjustment element and a light source providing element. The light source providing element is disposed below the light adjustment element and includes a light guide plate, a light source, a first prism structure, a second prism structure, and a third prism structure. The light source is adjacent to the light guide plate. The first prism structure is disposed on the light guide plate and faces the light guide plate. The second prism structure is disposed on the first prism structure and faces the light adjustment element. The third prism structure is disposed on the second prism structure and faces the light adjustment element. Wherein, an extension direction of the first prism structure is perpendicular to an extension direction of the light source, the angle between an extension direction of the second prism structure and the extension direction of the light source is 45 degrees or 135 degrees, and an extension direction of the third prism structure is not perpendicular to the extension direction of the second prism structure. Attached Figure Description

[0005] Figure 1A This is a schematic diagram of the structure of the electronic device according to the first embodiment of this application.

[0006] Figure 1B This is a perspective view of the electronic device according to the first embodiment of this application.

[0007] Figure 1C This is a light pattern diagram corresponding to the optical film of the light source providing element in the first embodiment of this application.

[0008] Figure 1D This is a light pattern diagram corresponding to another form of optical film of the light source providing element in the first embodiment of this application.

[0009] Figure 2 This is a schematic diagram of the viewing angle and color shift value corresponding to the electronic device of the first embodiment of this application.

[0010] Figure 3A This is a schematic diagram of the structure of an electronic device according to the second embodiment of this application.

[0011] Figure 3B This is a schematic diagram of the structure of an electronic device according to the third embodiment of this application.

[0012] Figure 4A This is a schematic diagram of the structure of the electronic device according to the fourth embodiment of this application.

[0013] Figure 4B This is a perspective view of the electronic device according to the fourth embodiment of this application.

[0014] Figure 4C This is a light pattern diagram corresponding to the optical film of the light source providing element in the fourth embodiment.

[0015] Figure 5 This is a schematic diagram of an electronic device according to the fifth embodiment of this application.

[0016] Explanation of reference numerals in the attached figures:

[0017] Semiconductor chip 1

[0018] Electronic devices 100

[0019] Light source providing element 1

[0020] Light adjustment element 2

[0021] Minimum virtual rectangle 2RT

[0022] First prism structure 11

[0023] Second prism structure 21

[0024] Third prism structure 31

[0025] Fourth prism structure 41

[0026] Light guide plate 50

[0027] Light source 60

[0028] Reflector 70

[0029] Light-emitting unit 61

[0030] Light source extension direction DL

[0031] First extension direction D1

[0032] Second extension direction D2

[0033] Third extension direction D3

[0034] Fourth extension direction D4

[0035] First strip structure 11s

[0036] The second strip structure 21s

[0037] The third strip structure 31s

[0038] Fourth strip structure 41s

[0039] included angles θ2L and θ3L

[0040] Substrates 12, 32, 42, 62

[0041] First side 12a, 32a, 42a

[0042] Second side 12b, 32b, 42b

[0043] Optical films 10A~10F

[0044] First vertex angle θ1

[0045] Second vertex angle θ2

[0046] Third vertex angle θ3

[0047] Fourth vertex angle θ4

[0048] Optical analysis diagrams P1~P8

[0049] Regions R1~R8

[0050] Adhesive layers 80, 81 Detailed Implementation

[0051] The exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. Wherever possible, the same element symbols are used in the drawings and description to denote the same or similar parts.

[0052] Throughout this application, certain terms are used to refer to specific components. Those skilled in the art will understand that sensing device manufacturers may use different names to refer to the same components. This document is not intended to distinguish between components that have the same function but different names. In the following description and claims, words such as “containing,” “comprising,” and “including” are open-ended terms and should therefore be interpreted as “containing but not limited to…”.

[0053] The terms “approximately,” “substantially,” or “roughly” are generally interpreted as being within 10% of a given value or range, or as being within 5%, 3%, 2%, 1%, or 0.5% of a given value or range.

[0054] The ordinal numbers used in the specification and claims, such as "first" and "second," to modify elements do not inherently imply any prior ordinal number for that element (or those elements), nor do they represent the order of one element with another, or the order of manufacturing processes. The use of these ordinal numbers is solely to clearly distinguish one named element from another with the same name. The claims and specification may not use the same terminology; therefore, a first element in the specification may be a second element in the claims.

[0055] In this application, the terms "given range is from the first value to the second value" and "given range falls within the range of the first value to the second value" indicate that the given range includes the first value, the second value, and other values ​​in between.

[0056] The electronic devices disclosed in this application may include light-emitting devices, display devices, automated equipment, clamping devices, computing devices, mechanical equipment, drug dispensing equipment, exposure devices, printing devices, three-dimensional printing devices, automotive devices, image-capturing devices, assembly devices, backlight devices, antenna devices, splicing devices, touch electronic devices, curved electronic devices, or free-shape electronic devices, but are not limited thereto. Display devices may include, for example, liquid crystal, light-emitting diode, fluorescence, phosphorescence, other suitable display media, or combinations thereof, but are not limited thereto. Display devices may be non-self-emissive or self-emissive. Antenna devices may be liquid crystal antenna devices or non-liquid crystal antenna devices; sensing devices may be sensing capacitance, light, heat, or ultrasound, but are not limited thereto. Splicing devices may include, for example, display splicing devices or antenna splicing devices, but are not limited thereto. It should be noted that the electronic device can be any of the aforementioned arrangements and combinations, but is not limited to them. Furthermore, the electronic device can be bendable or flexible. The shape of the electronic device can be rectangular, circular, polygonal, with curved edges, or other suitable shapes. The electronic device can have peripheral systems such as a drive system, control system, light source system, and shelving system to support the display device, antenna device, or splicing device. For ease of explanation, the following will use the form of an electronic device as a display device as an example.

[0057] It should be understood that the features described below can be replaced, reorganized, or mixed in several different embodiments to complete other embodiments without departing from the spirit of this application. Features between embodiments can be arbitrarily mixed and combined as long as they do not violate the spirit of the invention or conflict with it.

[0058] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art. It is understood that such terms, as defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the relevant art and the background or context of this application, and should not be interpreted in an idealized or overly formal manner, unless specifically defined in the embodiments of this application.

[0059] Furthermore, the term "adjacent" in the specification and claims is used to describe objects that are close to each other, and there may be contact or no contact between adjacent objects.

[0060] Furthermore, descriptions such as "when..." or "...when" in this application indicate "at present, before, or after," and are not limited to simultaneous occurrences; this is stated in advance. Descriptions such as "set on..." in this application indicate the corresponding positional relationship between two elements, and do not limit whether the two elements are in contact, unless specifically limited; this is stated in advance. Moreover, when this application describes multiple effects, the use of the word "or" between effects indicates that the effects can exist independently, but does not preclude the simultaneous existence of multiple effects.

[0061] In this article, any angle mentioned may have an error value of plus or minus 10 degrees.

[0062] Furthermore, for clarity, the directions in the diagrams will be defined using the X, Y, and Z directions below. When the electronic device 100 is a display device, the Z direction represents the display direction of the electronic device 100 and can correspond to the orthographic viewing angle of the electronic device 100. In some embodiments, when the device is of arbitrary shape, a minimum virtual rectangle enclosing the shape of the device can be defined. The side with the minimum side length of the minimum virtual rectangle is used as a reference side, and the direction parallel to the extension direction of the reference side is the first direction (e.g., the Y direction). When the minimum virtual rectangle is a square, the side with the minimum side length can be any side. In this case... Figure 1B For example, the smallest virtual rectangle 2RT that can be framed by the light adjustment element 2 is the Y direction, the direction that is parallel to the smallest side length of the smallest virtual rectangle 2RT is the X direction, and the directions that are perpendicular to the smallest side length of the smallest virtual rectangle 2RT are the Z directions.

[0063] Please refer to Figure 1A and Figure 1B , Figure 1A This is a schematic diagram of the structure of the electronic device 100 according to the first embodiment of this application, which is presented as an exploded view from a single perspective. Figure 1B This is a perspective view of the electronic device 100 according to the first embodiment of this application, which presents an exploded perspective view. For example... Figure 1AAs shown, the electronic device 100 includes a light source providing element 1 and a light adjustment element 2, wherein the light adjustment element 2 is used to adjust various light forms such as wavelength, intensity, brightness, or phase, but is not limited thereto. In some embodiments, the light adjustment element may be a filter layer, a quantum dot (QD) layer, or a liquid crystal layer, but is not limited thereto. In some embodiments, the light adjustment element 2 may be, for example, a display panel composed of various types in a display device. In the Z direction, the light source providing element 1 is disposed below the light adjustment element 2. The light source providing element 1 may include direct-lit, edge-lit, or array-lit types, but is not limited thereto. In some embodiments, the light source providing element 1 may include at least a first prism structure 11, a second prism structure 21, a third prism structure 31, a light guide plate 50, and a light source 60, wherein the light guide plate 50 may be selectively provided or not provided according to design requirements. In one embodiment, the light source providing element 1 may also include a fourth prism structure 41 and a reflector 70, wherein the reflector 70 may be selectively provided or not provided according to design requirements. In the Z direction, the light guide plate 50 can be disposed on the reflector 70, the first prism structure 11 is disposed on the light guide plate 50, the second prism structure 21 is disposed on the first prism structure 11, the third prism structure 31 is disposed on the second prism structure 21, and the fourth prism structure 41 can be disposed on the third prism structure 31, with the light source 60 adjacent to the light guide plate 50. The first prism structure 11 faces the light guide plate 50, while the second prism structure 21, the third prism structure 31, and the fourth prism structure 41 face the light adjustment element 2. In one embodiment, the light source 60 may include a plurality of light-emitting units 61 and a substrate 62, with the light-emitting units 61 disposed on the substrate 62, but not limited thereto.

[0064] The materials of the first prism structure 11 to the fourth prism structure 41 and the light guide plate 50 can be various known materials, and are not limited thereto. In one embodiment, the type of the light-emitting unit 61 of the light source 60 may include a light-emitting diode, such as an organic light-emitting diode (OLED), a mini LED, a micro LED, or a quantum dot LED (including QLED, QDLED), fluorescence, phosphorescence, or other suitable materials, or combinations thereof, and are not limited thereto. In one embodiment, the material of the reflective sheet 70 is not particularly limited, and may include, but is not limited to, metals, white ink, other reflective materials, or combinations thereof. The metal may include gold, silver, copper, aluminum, or combinations thereof, but is not limited thereto; the white ink may include white polyimide, resin, or combinations thereof, and is not limited thereto. Furthermore, the reflective sheet 70 may comprise a single-layer or multi-layer film reflective sheet.

[0065] One of the features of this application is the configuration of the prism structure (11, 21, 31, 41). For example... Figure 1B As shown, the light source 60 may have a light source extension direction DL parallel to the X direction, wherein the plurality of light-emitting units 61 of the light source 60 are arranged along the light source extension direction DL. The first prism structure 11 has a first extension direction D1 perpendicular to the light source extension direction DL. For example, the first prism structure 11 may include a plurality of first strip structures 11s, each of which extends along the first extension direction D1. The second prism structure 21 has a second extension direction D2. For example, the second prism structure 21 may include a plurality of second strip structures 21s, each of which extends along the second extension direction D2. The second extension direction D2 and the light source extension direction DL have an included angle θ2L, which is 45 degrees or 135 degrees and may have an error value of ±10 degrees. The third prism structure 31 has a third extension direction D3. For example, the third prism structure 31 may include a plurality of third strip structures 31s, each of which extends along the third extension direction D3. The third extension direction D3 is not perpendicular to the second extension direction D2.

[0066] Furthermore, in one embodiment, the fourth prism structure 41 may have a fourth extending direction D4. For example, the fourth prism structure 41 may include a plurality of fourth strip structures 41s, each of which extends along the fourth extending direction D4. The fourth extending direction D4 may be perpendicular to the third extending direction D3. In one embodiment, the third extending direction D3 may be perpendicular to or parallel to the light source extending direction DL, for example... Figure 1B The two directions are shown to be parallel. In other embodiments, the third extending direction D3 may also have an angle θ3L with the light source extending direction DL, for example, between 0 and 45 degrees or between 135 and 180 degrees. o ≦θ3L≦45 o , or 135 o ≦θ3L≦180 o Alternatively, the third extension direction D3 can also have an angle θ3L (45 degrees to 135 degrees) with the light source extension direction DL. o ≦θ3L≦135 o (and not limited to this); it should be noted that in the above case, the third extension direction D3 still needs to be non-perpendicular to the second extension direction D2, and needs to be perpendicular to the fourth extension direction D4 (that is, the fourth extension direction D4 will be adjusted according to the direction of the third extension direction D3 to achieve the condition that the two are perpendicular).

[0067] like Figure 1A and 1BAs shown, in one embodiment, the light source providing element 1 may include a substrate 12. In the Z direction, a first prism structure 11 and a second prism structure 21 may be respectively disposed on opposite sides of the substrate 12. For example, the substrate 12 has a first side 12a and a second side 12b opposite to each other. The second side 12b is adjacent to the light guide plate 50. The first prism structure 11 may be disposed on the second side 12b, and the second prism structure 21 may be disposed on the first side 12a. In this way, the first prism structure 11, the substrate 12 and the second prism structure 21 can form an optical film 10A. In addition, in one embodiment, the light source providing element 1 may include a substrate 32, and in the Z direction, a third prism structure 31 may be disposed on one side of the substrate 32. For example, the substrate 32 may have a first side 32a and a second side 32b opposite to each other, the second side 32b being adjacent to the second prism structure 21, and the third prism structure 31 being disposed on the first side 32a, thereby forming an optical film 10B with the third prism structure 31 and the substrate 32. Similarly, in one embodiment, the light source providing element 1 may also include a substrate 42, and in the Z direction, a fourth prism structure 41 may be disposed on one side of the substrate 42. For example, the substrate 42 may have a first side 42a and a second side 42b opposite to each other, the first side 42b being away from the light adjustment element 2, and the fourth prism structure 41 being disposed on the first side 42a, thereby forming an optical film 10C with the fourth prism structure 41 and the substrate 42.

[0068] Next, the detailed parameters of the prism structure are described. In one embodiment, the first prism structure 11 may have a first refractive index, which may be between 1.5 and 1.55 (greater than or equal to 1.5 and less than or equal to 1.55), but is not limited thereto. In one embodiment, the second prism structure 21 may have a second refractive index, which may be between 1.5 and 1.55 (greater than or equal to 1.5 and less than or equal to 1.55), but is not limited thereto. In one embodiment, the third prism structure 31 may have a third refractive index, which may be between 1.5 and 1.69 (greater than or equal to 1.5 and less than or equal to 1.69), but is not limited thereto. In one embodiment, the fourth prism structure 41 may have a fourth refractive index, which may be between 1.5 and 1.69 (greater than or equal to 1.5 and less than or equal to 1.69), but is not limited thereto.

[0069] In addition, such as Figure 1A As shown, in one embodiment, the first prism structure 11 may have a first apex angle θ1, which may be between 60 degrees and 120 degrees (60 degrees). o ≦θ1≦120 o(and not limited thereto.) In one embodiment, the second prism structure 21 may have a second apex angle θ2, which may be between 60 degrees and 120 degrees (60 degrees...). o ≦θ2≦120 o (and not limited thereto.) In one embodiment, the third prism structure 31 may have a third apex angle θ3, which may be between 60 degrees and 120 degrees (60 degrees). o ≦θ3≦120 o (and not limited thereto.) In one embodiment, the fourth prism structure 41 may have a fourth apex angle θ4, which may be between 60 degrees and 120 degrees (60 degrees...). o ≦θ4≦120 o (And not limited to this.) By setting the above parameters, the light packet can be concentrated at the position corresponding to the positive viewing angle, thereby improving the light output efficiency of the electronic device 100.

[0070] Furthermore, by adjusting the extension direction of the first prism structure 11 to the fourth prism structure 41, the light extraction efficiency of the electronic device 100 can be improved. Figure 1C These are the light pattern diagrams P1 to P3 corresponding to the optical films 10A to 10C of the light source providing element 1 in the first embodiment of this application, and please refer to... Figures 1A to 1B As a reference and supplement. Among them, Figure 1C From left to right, the light source providing element 1 is presented in the forms of having only optical film 10A, having both optical films 10A and 10B, and having both optical films 10A, 10B, and 10C. Furthermore, the optical analysis diagrams P1 to P3 can have tilt angles (θ) from 0 to 80 degrees and azimuth angles (ψ) from 0 to 360 degrees. The tilt angle can be defined as the angle between the positive viewing angle (e.g., the Z direction) corresponding to the display device 100. For example, a tilt angle of 0 degrees indicates parallelism to the positive viewing angle (Z), while a larger tilt angle represents a larger tilt angle between the positive viewing angle and the positive viewing angle. The azimuth angle can be defined as the angle on the XY plane, where the light provided by the light source 60 is directed towards a position with an azimuth angle of 270 degrees, but is not limited to this.

[0071] like Figure 1CAs shown, the light provided by the light source 60 enters the optical film 10A after passing through the light guide plate 50. In one embodiment, when the light source providing element 1 only has the optical film 10A, that is, only has a first prism structure 11 facing the light guide plate 50 and extending along the first extending direction D1 and a second prism structure 21 facing the light adjustment element 2 and extending along the second extending direction D2, the optical film 10A can split the light, so that the light packet is approximately distributed in a region R1 with an azimuth angle of 270 degrees to 0 degrees and an inclination angle far from 0 degrees (for example, about 40 degrees to 80 degrees). It can be seen that the second prism structure 21, having the second extending direction D2, can provide a beam splitting effect similar to a pyramid structure. Next, when the light source providing element 1 has optical films 10A and 10B, that is, when it also has a third prism structure 31 facing the light adjustment element 2 and extending along the third extension direction D3, the optical film 10A can split the light and the optical film 10B can then collect the light. At this time, on the corresponding optical analysis diagram P2, the light packet is roughly distributed in the region R2 where the azimuth angle is close to 0 degrees and the tilt angle is close to 0 degrees (for example, about 20 degrees to 40 degrees). Next, when the light source providing element 1 simultaneously includes optical films 10A to 10C, that is, when it also includes a fourth prism structure 41 facing the light adjustment element 2 and extending along the fourth extending direction D4, optical film 10A can split the light, optical film 10B can then perform a first light collection, and optical film 10C can then perform a second light collection. At this time, on the corresponding optical analysis diagram P3, the light packet is roughly distributed in the center of the optical analysis diagram P3 and the surrounding area R3. The corresponding tilt angle and azimuth angle can substantially correspond to the orthographic angle (for example, concentrated in the center of the optical analysis diagram P3). It can be seen that after the light passes through the specially designed optical films 10A to 10C, the light packet can be concentrated in the position corresponding to the orthographic angle, thus improving the light extraction efficiency of the electronic device 100, and is not limited to this. Alternatively, this application does not require the use of a complex pyramid structure, thus reducing production costs.

[0072] Figure 1D The light pattern diagrams P4-P6 are corresponding to another form of the optical films 10A to 10C of the light source providing element 1 in the first embodiment of this application, and please refer to them. Figures 1A to 1C Used as a reference or supplement. Figure 1D The structure of the light source providing element 1 is roughly the same as Figure 1C The light source in the middle is similar to element 1, the difference is that Figure 1D The second extension direction D2 of the second prism structure 21 in the middle is... Figure 1C The second extension direction D2 of the second prism structure 21 is different, for example Figure 1C The angle between the second extension direction D2 and the light source extension direction DL is 45 degrees, while Figure 1DThe angle between the second extension direction D2 and the light source extension direction DL is 135 degrees. Figure 1D The features are generally applicable Figure 1C Therefore, the following explanation will mainly focus on the differences.

[0073] like Figure 1D As shown, in one embodiment, when the light source providing element 1 only has an optical film 10A, the optical film 10A can perform unilateral beam splitting of the light passing through the light guide plate 50. For example, in the corresponding optical analysis diagram P4, the light packet can be distributed in a region R4 with an azimuth angle of 180 degrees to 270 degrees and a tilt angle far from 0 degrees (e.g., about 40 degrees to 80 degrees), but is not limited thereto. Next, when the light source providing element 1 has optical films 10A and 10B, the optical film 10A can split the light passing through the light guide plate 50, and the optical film 10B can then collect the light. For example, in the corresponding optical analysis diagram P5, the light packet can be distributed in a range R5 with a tilt angle closer to 0 degrees (e.g., about 20 degrees to 40 degrees) and an azimuth angle close to 180 degrees, but is not limited thereto. Next, in one embodiment, when the light source providing element 1 simultaneously has optical films 10A to 10C, optical film 10A can split the light, optical film 10B can then collect the light for the first time, and optical film 10C can then collect the light for the second time. For example, on the corresponding optical analysis diagram P6, the light packets are roughly distributed in the center of the optical analysis diagram P6 and the surrounding area R6, that is, the light packets can be concentrated at the position corresponding to the positive viewing angle.

[0074] Figure 2 This is a schematic diagram of the viewing angle and color cast value corresponding to the electronic device 100 of the first embodiment of this application, and please refer to it. Figures 1A to 1D As an auxiliary, among which Figure 2 The horizontal axis represents the viewing angle of the electronic device 100 in the horizontal direction, where 0 degrees corresponds to a direct viewing angle, and the larger the angle, the larger the side viewing angle. The vertical axis represents the color cast value, such as the degree of color cast, and usually a color cast value of 0.01 is used as the standard value. For example, the color cast value should not be greater than 0.01. Figure 2 As shown, when the light source providing element 1 has the aforementioned optical films 10A to 10C, the color shift value corresponding to each viewing angle is less than 0.01 within a common viewing angle range (for example, the horizontal viewing angle of the user facing the electronic device 100 is between -60 degrees and 60 degrees), which is an acceptable value. Therefore, it can be seen that the yellow sun problem of the prior art can be solved, and is not limited to this.

[0075] The first embodiment can have different variations. Figure 3A This is a schematic diagram of an electronic device according to a second embodiment of this application, and please refer to it. Figures 1A to 2 As an auxiliary function. Figure 3A The features are generally applicable Figure 1A Therefore, the following explanation mainly focuses on the differences.

[0076] like Figure 3A As shown, the light source providing element 1 may further include an adhesive layer 80. In the Z direction, the adhesive layer 80 may be disposed between the third prism structure 31 and the fourth prism structure 41. For example, the third prism structure 31 may be disposed on the substrate 32, the adhesive layer 80 may be disposed on the third prism structure 31, the substrate 42 may be disposed on the adhesive layer 80, and the fourth prism structure 41 may be disposed on the substrate 42. In one embodiment, the material of the adhesive layer 80 may include, for example, optical clear adhesive (OCA), liquid optical clear adhesive (LOCA), or other similar materials, and is not limited thereto. In one embodiment, the adhesive layer 80 may be implemented as a full-surface adhesive or a patterned adhesive (e.g., lettering adhesive or other patterned adhesive), and is not limited thereto. In this way, the third prism structure 31 and the fourth prism structure 41 can be fixed together by the adhesive layer 80, that is, the substrate 32, the third prism structure 31, the adhesive layer 80, the substrate 42, and the fourth prism structure 41 can form an optical film 10D. Therefore, it can be seen that... Figure 3A The light source providing element 1 may have two optical films 10A and 10D, and can provide effects similar to those in the first embodiment.

[0077] The first embodiment may also have different variations. Figure 3B This is a schematic diagram of an electronic device according to a third embodiment of this application, and please refer to it for further details. Figures 1A to 3A As an auxiliary function. Figure 3B The features are generally applicable Figure 3A Therefore, the following explanation mainly focuses on the differences.

[0078] like Figure 3BAs shown, the light source providing element 1 may also include another adhesive layer 81. The material or usage of this other adhesive layer 81 is the same as that described for adhesive layer 80, and will not be described in detail here. In the Z direction, this other adhesive layer 81 may be disposed between the second prism structure 21 and the third prism structure 31. For example, the substrate 12 may be disposed between the first prism structure 11 and the second prism structure 21, the other adhesive layer 81 may be disposed on the second prism structure 21, the substrate 32 may be disposed on the other adhesive layer 81, the third prism structure 31 may be disposed on the substrate 32, the adhesive layer 80 may be disposed on the third prism structure 31, the substrate 42 may be disposed on the adhesive layer 80, and the fourth prism structure 41 may be disposed on the substrate 42. In this way, the first prism structure 11, the second prism structure 21, the third prism structure 31, and the fourth prism structure 41 can be fixed together by the adhesive layer 80 and the other adhesive layer 81. That is, the first prism structure 11, the substrate 12, the second prism structure 21, the other adhesive layer 81, the substrate 32, the third prism structure 31, the adhesive layer 80, the substrate 42, and the fourth prism structure 41 can form an optical film 10E. Therefore, it can be seen that... Figure 3A The light source providing element 1 may have an optical film 10E and can provide similar effects to the first embodiment.

[0079] The optical film of this application can also have different configurations. Please refer to... Figure 4A and 4B ,in Figure 4A This is a schematic diagram of the structure of the electronic device 100 according to the fourth embodiment of this application, which presents an exploded view from a single perspective. Figure 4B This is an exploded perspective view of the electronic device 100 according to the fourth embodiment of this application, and please refer to it. Figures 1A to 3B As an auxiliary function. Figure 4A and 4B Some features are applicable Figure 1A and 1B The following description focuses on the differences from the (first embodiment).

[0080] like Figure 4A and 4BAs shown, the electronic device 100 may include a light source providing element 1 and a light adjustment element 2. The light source providing element 1 may include a first prism structure 11, a second prism structure 21, a third prism structure 31, a light guide plate 50, a light source 60, and a reflector 70. The light source 60 has a light source extending direction DL, the first prism structure 11 has a first extending direction D1, the second prism structure 21 has a second extending direction D2, and the third prism structure 31 has a third extending direction D3. The first extending direction D1 is perpendicular to the light source extending direction DL. The angle θ2L between the second extending direction D2 and the light source extending direction is 45 degrees or 135 degrees. Furthermore, unlike the first embodiment, in the fourth embodiment, the angle θ3L between the third extending direction D3 and the light source extending direction DL is 45 degrees or 135 degrees.

[0081] Furthermore, the light source providing element 1 may include a substrate 12, and in the Z direction, a first prism structure 11 and a second prism structure 21 may be respectively disposed on opposite sides of the substrate 12, thereby forming an optical film 10A. In another embodiment, the light source providing element 1 may include a substrate 32, and in the Z direction, a third prism structure 31 may be disposed on one side of the substrate 32, for example, the side away from the second prism structure 21, thereby forming an optical film 10B.

[0082] The light source providing element 1 in the fourth embodiment can also improve the light output efficiency. Figure 4C These are the light pattern diagrams P7-P8 corresponding to the optical films 10A to 10B of the light source providing element 1 in the fourth embodiment of this application, and please refer to... Figures 1A to 4B Used as a reference or supplement. Figure 4C The features are generally applicable Figure 1C Therefore, the following explanation mainly focuses on the differences. For example, the angle θ2L between the second extension direction D2 of the second prism structure 21 and the light source extension direction DL can be 45 degrees or 135 degrees, and the angle θ3L between the third extension direction D3 of the third prism structure 31 and the light source extension direction DL can be 45 degrees or 135 degrees. For ease of explanation, Figure 4C This example uses the case where the included angle θ2L is 45 degrees and the included angle θ3L is 45 degrees.

[0083] like Figure 4CAs shown, in one embodiment, when the light source providing element 1 only has an optical film 10A, the optical film 10A can unilaterally split the light passing through the light guide plate 50. For example, on the corresponding optical analysis diagram P7, the light packet is generally distributed in the region R7 with an azimuth angle of 270 degrees to 0 degrees and a tilt angle far from 0 degrees (e.g., 40 degrees to 80 degrees). Next, when the light source providing element 1 has both optical films 10A and 10B, on the corresponding optical analysis diagram P8, the light packet is generally located at or near the center of the optical analysis diagram P8 and the surrounding region R8. Thus, the light packet can be distributed at a position corresponding to the orthogonal viewing angle. Therefore, the light extraction efficiency of the electronic device 100 can be improved. It should be noted that the fourth embodiment can have similar effects to the first embodiment.

[0084] The fourth embodiment may also have different variations. Figure 5 This is a schematic diagram of an electronic device according to the fifth embodiment of this application, and please refer to it for further details. Figures 1A to 4C As an auxiliary function. Figure 5 The characteristics are roughly applicable to the description in Figure 4, so the following mainly focuses on the differences.

[0085] like Figure 5 As shown, the light source providing element 1 may further include an adhesive layer 80 disposed between the second prism structure 21 and the third prism structure 31. For example, the substrate 12 may be disposed between the first prism structure 11 and the second prism structure 21, the adhesive layer 80 may be disposed on the second prism structure 21, the substrate 32 may be disposed on the adhesive layer 80, and the third prism structure 31 may be disposed on the substrate 32. In this way, the first prism structure 11, the second prism structure 21, and the third prism structure 31 can be fixed together by the adhesive layer 80, that is, the first prism structure 11, the substrate 12, the second prism structure 21, the adhesive layer 80, the substrate 32, and the third prism structure 31 can form an optical film 10F. Figure 5 The light source providing element 1 may have an optical film 10F and can provide similar effects to the first embodiment.

[0086] In one embodiment, by means of bonding technology, the thickness of the light source providing element 1 in the Z direction of the various embodiments of this application can be reduced. This provides a thinner profile.

[0087] In one embodiment, the light extraction efficiency of the electronic device 100 in various embodiments of this application is substantially between 180% and 190%. Therefore, the electronic device 100 of this application can provide good light extraction efficiency, but is not limited thereto.

[0088] Thus, the features of the electronic device 100 of this application can be understood.

[0089] Therefore, it can be seen that the electronic device 100 provided in this application has a specially designed light source providing element 1, which can improve light output efficiency, reduce production costs, or solve the problem of yellow sun.

[0090] In one embodiment, this application may determine whether a product falls within its protection scope at least by examining the presence or absence of components, component configuration, and / or mechanical observation of competing products, but is not limited thereto. Furthermore, mechanical observation may be performed, for example, by using equipment such as an optical microscope or a scanning microscope, and is not limited thereto.

[0091] Details or features of the various embodiments of this application may be freely combined and used as long as they do not violate the spirit of the invention or conflict with it.

[0092] The above embodiments are merely illustrative examples for ease of explanation. The scope of the rights claimed in this application should be determined by the claims, and not limited to the above embodiments.

Claims

1. An electronic device, characterized in that, Include: A light adjustment element; and A light source providing element is disposed below the light adjustment element and includes: A light guide plate; A light source is located near the light guide plate; A first prism structure is disposed on the light guide plate and faces the light guide plate; A second prism structure is disposed on the first prism structure and faces the light adjustment element; as well as A third prism structure is disposed on the second prism structure and faces the light adjustment element; Wherein, an extension direction of the first prism structure is perpendicular to an extension direction of the light source, the angle between an extension direction of the second prism structure and the extension direction of the light source is 45 degrees or 135 degrees, and an extension direction of the third prism structure is not perpendicular to the extension direction of the second prism structure.

2. The electronic device as claimed in claim 1, characterized in that, It also includes a fourth prism structure disposed on the third prism structure and facing the light adjustment element, wherein the extension direction of the third prism structure is parallel or perpendicular to the extension direction of the light source, and the extension direction of the fourth prism structure is perpendicular to the extension direction of the third prism structure.

3. The electronic device as claimed in claim 1, characterized in that, The angle between the extension direction of the third prism structure and the extension direction of the light source is 45 degrees or 135 degrees.

4. The electronic device as claimed in claim 1, characterized in that, It also includes a substrate, and the first prism structure and the second prism structure are respectively disposed on both sides of the substrate to form an optical film.

5. The electronic device as claimed in claim 1, characterized in that, It also includes a fourth prism structure disposed on the third prism structure and facing the light adjustment element, wherein an extension direction of the fourth prism structure is perpendicular to the extension direction of the third prism structure.

6. The electronic device as claimed in claim 5, characterized in that, The angle between the extension direction of the third prism structure and the extension direction of the light source is between 0 and 45 degrees.

7. The electronic device as claimed in claim 5, characterized in that, The apex angle of the first prism structure, the apex angle of the second prism structure, the apex angle of the third prism structure, or the apex angle of the fourth prism structure is between 60 degrees and 120 degrees.

8. The electronic device as claimed in claim 5, characterized in that, The fourth prism structure has an adhesive layer between it and the third prism structure.

9. The electronic device as claimed in claim 1, characterized in that, The apex angle of the first prism structure, the apex angle of the second prism structure, or the apex angle of the third prism structure is between 60 degrees and 120 degrees.

10. The electronic device as claimed in claim 1, characterized in that, The refractive index of the first prism structure is between 1.5 and 1.55.

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