Optical sensing structure, optical sensing film and optical display system

Abstract

The invention discloses an optical sensing structure, an optical sensing film and an optical display system. The optical sensing structure comprises an optical sensing member and at least one first reflector. The optical sensing piece is provided with a light-sensitive surface, and the light-sensitive surface can be used for sensing the intensity of ambient light. The at least one first reflector is located on one side of the optical sensing member. The at least one first reflector has a first front surface, a first back surface and a first outer side surface. The first front surface is located on the photosensitive surface. The first back surface faces away from the first front surface. The first outer side is located between the first front and the first back. The length of the first front face in the first direction is a1, the length of the first back face in the first direction is b1, the included angle between the first outer side face and the first back face is theta1, and the following conditions are met: 0 lt; a1 / b1 < = 0.6 and 25 degrees < = [theta] 1 < = 65 degrees.

Description

TECHNICAL FIELD

[0001] The present application relates to an optical sensing structure, an optical sensing film and an optical display system, in particular, to an optical display system comprising an optical sensing structure and an optical sensing film. BACKGROUND

[0002] In recent years, with the rapid growth of applications in the field of augmented reality (AR) and mixed reality (MR), transparent projection technology that can combine actual scenes and digital images is increasingly favored by the market.

[0003] However, the existing transparent projection film is easy to diffuse the light projected thereon, making the imaging light have no directionality and resulting in blurred imaging. In addition, the imaging on the transparent projection film is also easily affected by ambient light. For example, when the ambient light is too strong, the contrast of the imaging on the transparent projection film decreases, making it difficult to distinguish, and reducing the observability of the image. SUMMARY

[0004] The present application provides an optical sensing structure, an optical sensing film and an optical display system for providing clear imaging.

[0005] The optical sensing structure disclosed by an embodiment of the present application comprises an optical sensing member and at least one first reflector. The optical sensing member has a light sensing surface, and the light sensing surface can be used to sense the intensity of ambient light. The at least one first reflector is located on one side of the optical sensing member. The at least one first reflector has a first front surface, a first back surface and a first outer side surface. The first front surface is located above the light sensing surface. The first back surface is opposite to the first front surface. The first outer side surface is located between the first front surface and the first back surface. The length of the first front surface in the first direction is a_1, the length of the first back surface in the first direction is b_1, and the included angle between the first outer side surface and the first back surface is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6 and 25 degrees ≤ θ_1 ≤ 65 degrees.

[0006] Another embodiment of the present application discloses an optical sensing film, comprising a transparent substrate, an optical sensing array, and at least one circuit. The transparent substrate has a bearing surface. The optical sensing array is disposed on the transparent substrate or the bearing surface of the transparent substrate. The optical sensing array comprises a plurality of optical sensing structures. Each optical sensing structure comprises an optical sensing element and at least one first reflector. The optical sensing element is disposed on the bearing surface of the transparent substrate. The optical sensing element has a light sensing surface. The light sensing surface faces away from the bearing surface and is used to sense ambient light intensity. The at least one first reflector is located on one side of the optical sensing element. The at least one first reflector has a first front surface, a first back surface, and a first outer side surface. The first front surface is located above the light sensing surface. The first back surface faces away from the first front surface. The first outer side surface is located between the first front surface and the first back surface. The at least one circuit is disposed on the transparent substrate and electrically connected to the optical sensing element. The length of the first front surface in a first direction is a_1, the length of the first back surface in the first direction is b_1, and the included angle between the first outer side surface and the first back surface is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6 and 25 degrees ≤ θ_1 ≤ 65 degrees.

[0007] Still another embodiment of the present application discloses an optical display system, comprising the above-mentioned optical sensing film, a projector, and a controller. The projector is directed towards the optical sensing film. The controller is communicatively connected to the at least one circuit and the projector. The controller is used to acquire a plurality of intensity values of ambient light sensed by the optical sensing array through the at least one circuit, and the controller adjusts the optical characteristics of the projection light emitted by the projector according to the intensity values.

[0008] According to the above-mentioned embodiments, the light rays incident from the first front surface of the optical sensing structure to the first back surface direction are concentratedly reflected after reaching the optical sensing film, the diffusion situation is reduced, more outgoing light rays are provided, and the imaging quality is improved. Furthermore, the optical display system can adaptively adjust the optical characteristics of the projection light emitted by the projector according to the intensity values of the ambient light sensed by the optical sensing structure, so as to obtain clear imaging on the optical sensing film. Due to the structural configuration of the optical sensing structure, the signal of the light intensity sensed by the optical sensing structure is strengthened, the light intensity value acquired by the controller is more accurate, and accurate regulation and control are made.

[0009] The above description of the present application and the following embodiments are used to demonstrate and explain the principles of the present application, and provide further explanation of the patent application scope of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a side view schematic diagram of an optical sensing film according to a first embodiment of the present application;

[0011] Figure 2is a side view cross-sectional schematic diagram of an optical sensing film illustrated by a second embodiment of the present invention;

[0012] Figure 3 is a side view cross-sectional schematic diagram of an optical sensing film illustrated by a third embodiment of the present invention;

[0013] Figure 4 is a side view cross-sectional schematic diagram of an optical sensing film illustrated by a fourth embodiment of the present invention;

[0014] Figure 5 is a side view cross-sectional schematic diagram of an optical sensing film illustrated by a fifth embodiment of the present invention;

[0015] Figure 6 is a side view cross-sectional schematic diagram of an optical sensing film illustrated by a sixth embodiment of the present invention;

[0016] Figure 7 is a side view cross-sectional schematic diagram of an optical sensing film illustrated by a seventh embodiment of the present invention;

[0017] Figure 8 is a schematic diagram of an imaging ray path simulation performed for an optical sensing film of an embodiment of the present invention;

[0018] Figure 9 is a simulated imaging position profile for Figure 8 ;

[0019] Figure 10 is a schematic diagram of an imaging ray path simulation performed for an optical sensing film of another embodiment of the present invention;

[0020] Figure 11 is a simulated imaging position profile for Figure 10 ;

[0021] Figure 12 is a schematic diagram of an imaging ray path simulation performed for a film of a comparative example;

[0022] Figure 13 is a simulated imaging position profile for Figure 12 ;

[0023] Figure 14 is a side view cross-sectional schematic diagram of an optical sensing film illustrated by an eighth embodiment of the present invention;

[0024] Figure 15 is a schematic diagram of an optical display system illustrated by a ninth embodiment of the present invention.

[0025] Symbol Explanation

[0026] 1: optical display system

[0027] 10, 20, 30, 40, 50, 60, 70, 80 1a, 801b, 80, 90: optical sensing film

[0028] 11, 21, 31, 41, 51, 61, 71, 81: transparent substrate

[0029] 111, 211, 311, 411, 511, 611, 711, 811: bearing surface

[0030] 12, 22, 32, 42, 52, 62, 72, 82, 92: optical sensing array

[0031] 120, 220, 320, 420, 520, 620, 720, 820, 920: optical sensing structure

[0032] 121, 221, 321, 421, 521, 621, 721: optical sensing member

[0033] 1211, 2211, 3211, 4211: light receiving surface

[0034] 122, 222, 322, 422, 522, 622, 722: first light guide

[0035] 123, 223, 323, 423, 523, 623, 723: first reflecting body

[0036] 1231, 2231, 3231, 4231, 5231, 6231, 7231: first front surface

[0037] 1232, 2232, 3232, 4232, 5232, 6232, 7232: first back surface

[0038] 1233, 2233, 3233, 4233, 5233, 6233, 7233: first lateral surface

[0039] 1234, 5234, 6234, 7234: first inner lateral surface

[0040] 224, 324: extended reflecting body

[0041] 13, 23, 33, 43, 53, 63, 73, 83, 93: line group

[0042] 131, 531, 631, 731: first line

[0043] 132, 532, 632, 732: second line

[0044] 14, 24, 34, 44, 54, 64, 74, 84: second light guide

[0045] 55, 65: second reflector

[0046] 551, 651: second front surface

[0047] 552, 652: second back surface

[0048] 553, 653: second lateral surface

[0049] 654: second inner lateral surface

[0050] 86: reflective structure

[0051] 88: layered structure

[0052] 881: optical adhesive layer

[0053] 882: diffusion film layer

[0054] 882a: plate body

[0055] 882b: diffusion particles

[0056] 883: protective film

[0057] 89: adhesive layer

[0058] 2: driver

[0059] 3: projector

[0060] 4: controller

[0061] a_1, a_2, a, a_r, b_1, b_2, b, b_r: length

[0062] a_w, b_w: width

[0063] θ_1, θ_2, θ_w, θ_r: angle

[0064] D1, D2, X, Y, Z: direction

[0065] DT: detector

[0066] FL: flashlight

[0067] G: gate

[0068] L_in: incident light

[0069] L_out: emergent light DETAILED DESCRIPTION

[0070] The present application is described in detail below with reference to the attached drawings, which are provided solely for purposes of illustration and should not be construed as limiting the present application. The following detailed description of the application is presented in the context of a specific application, but is presented solely for purposes of illustration and should not be construed as limiting the present application. Any person skilled in the relevant art can readily understand the general principles of the present application and can apply the same to other applications without departing from the spirit and scope of the present application. The present application is described with reference to the following drawings in which:

[0071] Reference is made to Figure 1 is a schematic side cross-sectional view of an optical sensing film 10 according to a first embodiment of the present application. The optical sensing film 10 includes a transparent substrate 11, an optical sensing array 12, and a circuitry group 13. The transparent substrate 11 has a bearing surface 111. The optical sensing array 12 and the circuitry group 13 are disposed on the transparent substrate 11. Note that the actual size of the optical sensing array 12 and the circuitry group 13 is too small to be observed by naked eyes, so that the optical sensing film 10 still appears to be transparent to naked eyes.

[0072] The optical sensing array 12 can include a plurality of optical sensing structures 120. Reference is first made to Figure 15 The optical sensing structures 920 (corresponding to the optical sensing structures 120) are, for example, distributed along the X and Y directions to form an array in the optical sensing film 90 (corresponding to the optical sensing film 10). In the present embodiment, each optical sensing structure 120 can be similar in structure. For simplicity of the drawings, Figure 1 one of the optical sensing structures 120 is shown in

[0073] As shown in Figure 1 , the optical sensing structure 120 can include an optical sensing element 121, a first light guide 122, and a first reflector 123, which are disposed on the bearing surface 111 of the transparent substrate 11. Note that the transparent substrate 11 can be a simple glass layer, or can be integrated by a plurality of light-transmissive layers, such as any combination of insulating layers, buffer layers, barrier layers, or glass layers, without being limited thereto.

[0074] The optical sensing element 121 can include, for example, a thin-film transistor (TFT) of a-Si, LTPS (low temperature poly-silicon), organic, 2D material, AOS (amorphous oxide semiconductor), or the like, a diode (Diode) of PIN, PN, or the like, or the like. The optical sensing element 121 has a light-sensing surface 1211. The light-sensing surface 1211 faces away from the bearing surface 111 and is used to sense the ambient light intensity.

[0075] The material of the first light guide 122 can be, for example, an organic photoresist material, poly(methyl methacrylate) (PMMA), an epoxy resin material, or an inorganic thin film material. The first light guide 122 has, for example, a light refractive index of 1 to 3, a light transmittance of 70% or more, and a haze of 10% or less. The first light guide 122 is disposed on the optical sensing member 121. The first light guide 122 is located between the optical sensing member 121 and the first reflector 123 and is light-transmissive. In an embodiment, the first light guide 122 can be provided as needed, or can be omitted as a cavity. The following embodiments can also be applicable.

[0076] The material of the first reflector 123 can include, for example, a reflective material such as aluminum, silver, titanium, molybdenum, or an alloy. The first reflector 123 is disposed on the first light guide 122 and is located on a side of the optical sensing member 121 away from the bearing surface 111. The first reflector 123 has a first front surface 1231, a first back surface 1232, a first outer side surface 1233, and a first inner side surface 1234. The first front surface 1231 is located above the light-receiving surface 1211. The first back surface 1232 faces away from the first front surface 1231 and can be substantially flush with the bearing surface 111. The first outer side surface 1233 is located between the first front surface 1231 and the first back surface 1232. The first inner side surface 1234 is recessed from the first back surface 1232 toward the first front surface 1231 and forms a recess RC to accommodate the optical sensing member 121.

[0077] According to the above structure, the first inner side surface 1234 of the optical sensing structure 120 and the bearing surface 111 of the transparent substrate 11 surround the optical sensing member 121 and the first light guide 122. Through such a configuration, light incident from a side of the transparent substrate 11 on which the optical sensing array 12 is not disposed can be reflected by the first reflector 123 after passing through the transparent substrate 11 and the first light guide 122, and then incident onto the light-receiving surface 1211 of the optical sensing member 121, thereby enhancing the light intensity signal sensed by the optical sensing member 121.

[0078] The line group 13 can be disposed near the optical sensing array 12. Each line group 13 can include at least one line, and in this embodiment, a first line 131 and a second line 132 are included as an example. The first line 131 and the second line 132 are, for example, a metal or an alloy material and can reflect light. The first line 131 can be disposed in the transparent substrate 11. The second line 132 can be disposed on the bearing surface 111 of the transparent substrate 11. Each of the first line 131 and the second line 132 can be similar in structure, and for the sake of simplicity of the drawing, Figure 1 In this embodiment, one first line 131 and one second line 132 are shown as an example.

[0079] In an embodiment, the first line 131 and the second line 132 are electrically connected to the optical sensing element 121 through the gate G, for example, in the case of an amorphous silicon thin film transistor (a-Si TFT) type optical sensing element 121, to transmit the light intensity signal sensed by the photosensitive surface 1211 of the optical sensing element 121.

[0080] The length of the first front surface 1231 in the first direction D1 is a_1, the length of the first back surface 1232 in the first direction D1 is b_1, and the angle between the first outer side surface 1233 and the first back surface 1232 is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6 and 25 degrees ≤ θ_1 ≤ 65 degrees. The first direction D1 may, for example, be any direction in the plane formed by the X direction and the Y direction of the transparent substrate 11. Figure 15

[0081] By satisfying the above conditions, the light incident from the side of the transparent substrate 11 on which the optical sensing array 12 is provided is concentratedly reflected by the first front surface 1231 and the first outer side surface 1233 of the first reflector 123 after reaching the optical sensing array 12, reducing the diffused situation.

[0082] The width of one side of the first line 131 and the second line 132 in the normal direction Z of the bearing surface 111 is a_w, the width of the other side of the first line 131 and the second line 132 in the normal direction Z of the bearing surface 111 is b_w, and the angle between the side surface of the first line 131 and the second line 132 and the bearing surface 111 is θ_w, which satisfies the following conditions: 0 < a_w / b_w ≤ 0.6 and 25 degrees ≤ θ_w ≤ 65 degrees. Note that the one side of the first line 131 with a width a_w refers to the side close to the bearing surface 111 in the normal direction Z, while the one side of the second line 132 with a width a_w refers to the side away from the bearing surface 111 in the normal direction Z; the other side of the first line 131 with a width b_w refers to the side away from the bearing surface 111 in the normal direction Z, while the other side of the second line 132 with a width b_w refers to the side close to the bearing surface 111 in the normal direction Z. In an embodiment, the relative position relationship between the first line 131, the second line 132 and the bearing surface 111 can be adjusted and configured as required.

[0083] By satisfying the above conditions, the light incident from the side of the transparent substrate 11 on which the optical sensing array 12 is provided is concentratedly reflected by the first front surface 1231 and the first outer side surface 1233 of the first reflector 123 after reaching the optical sensing array 12, reducing the diffused situation.

[0084] ​The optical sensing film 10 may further include a plurality of second light guides 14. The material of the second light guides 14 may be, for example, an organic photoresist material, poly(methyl methacrylate) (PMMA), epoxy resin, or an inorganic material. The second light guides 14 possess characteristics such as a refractive index of 1 to 3, a light transmittance of 70% or more, and a haze of 10% or less. The second light guides 14 are disposed on the bearing surface 111 of the transparent substrate 11 and correspond to the first line 131 and the second line 132. The second light guides 14 are transparent, therefore they do not affect the path of the light reflected after reaching the line group 13. Please note that the shape of the second light guide 14 shown in this embodiment is not intended to limit the invention. In some embodiments, it may also be patterned as a layered structure. Furthermore, the second light guides 14 may be formed in the same manufacturing process as the first light guide 122, thus saving manufacturing time for the optical sensing film 10. In one embodiment, the second light guides 14 may be provided as needed or may be omitted. The following examples are also applicable.

[0085] Please refer to Figure 2 This is a side cross-sectional schematic diagram of an optical sensing film 20 according to a second embodiment of the present invention. The optical sensing film 20 includes a transparent substrate 21, an optical sensing array 22, a circuit group 23, and a plurality of second light guides 24. The transparent substrate 21 has a bearing surface 211. The optical sensing array 22, the circuit group 23, and the second light guides 24 are disposed on the transparent substrate 21. The optical sensing film 20 appears to be translucent to the naked eye.

[0086] The optical sensing array 22 may include multiple optical sensing structures 220. The distribution of the optical sensing structures 220 on the bearing surface 211 of the transparent substrate 21 is similar to the distribution of the optical sensing structures 120 in the first embodiment, and will not be described again here. Furthermore, the various optical sensing structures 220 may be structurally similar; for the sake of simplicity in the diagram, Figure 2 The diagram below illustrates an optical sensing structure 220 as an example.

[0087] like Figure 2 As shown, the optical sensing structure 220 may include an optical sensing element 221, a first light guide 222 and a first reflector 223 stacked on the bearing surface 211 of the transparent substrate 21, and may also include an extended reflector 224.

[0088] The optical sensor 221 has a photosensitive surface 2211. The photosensitive surface 2211 faces away from the bearing surface 211 and is used to sense the intensity of ambient light.

[0089] The first light guide 222 can be similar to the first light guide 122 of the first embodiment in material and property, and thus will not be described again. The first light guide 222 is disposed on the optical sensing element 221. The first light guide 222 is located between the optical sensing element 221 and the first reflector 223 and is transparent to light.

[0090] The first reflector 223 can be similar to the first reflector 123 of the first embodiment in material and property, and thus will not be described again. The first reflector 223 is disposed on the first light guide 222 and is located away from the bearing surface 211 of the transparent substrate 21. The first reflector 223 has a first front surface 2231, a first back surface 2232, and a first lateral surface 2233. The first front surface 2231 is located above the light receiving surface 2211. The first back surface 2232 faces away from the first front surface 2231 and can be located between the first front surface 2231 and the light receiving surface 2211. The first lateral surface 2233 is located between the first front surface 2231 and the first back surface 2232.

[0091] The material of the extension reflector 224 can be similar or identical to that of the first reflector 223. The extension reflector 224 protrudes from the first back surface 2232 of the first reflector 223 and is located between the first back surface 2232 of the first reflector 223 and the bearing surface 211 of the transparent substrate 21.

[0092] According to the above structure, the extension reflector 224, the first back surface 2232 of the first reflector 223, and the bearing surface 211 of the transparent substrate 21 surround the optical sensing element 221 and the first light guide 222. Through such a configuration, light incident from the side of the transparent substrate 21 where the optical sensing array 22 is not disposed can be reflected by the extension reflector 224 and the first reflector 223 after passing through the transparent substrate 21 and the first light guide 222, and then incident onto the light receiving surface 2211 of the optical sensing element 221, thereby strengthening the light intensity signal sensed by the optical sensing element 221.

[0093] The circuit group 23 and the second light guide 24 are similar to the circuit group 13 and the second light guide 14 of the first embodiment in structure and configuration, and thus will not be described again.

[0094] The length of the first front surface 2231 in the first direction D1 is a_1, the length of the first back surface 2232 in the first direction D1 is b_1, and the angle between the first lateral surface 2233 and the first back surface 2232 is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6 and 25 degrees ≤ θ_1 ≤ 65 degrees. The first direction D1 may, for example, be any direction in the plane formed by the X direction and the Y direction of the transparent substrate 21. Figure 15

[0095] ​By satisfying the above condition, the light rays incident from the side of the transparent substrate 21 where the optical sensing array 22 is disposed will be concentrated reflected by the first reflectors 223 after reaching the optical sensing array 22, and the diffused condition is reduced.

[0096] Please refer to Figure 3 is a side view schematic diagram of an optical sensing film 30 according to a third embodiment of the present application. The optical sensing film 30 comprises a transparent substrate 31, an optical sensing array 32, a circuit group 33, and a plurality of second light guides 34. The transparent substrate 31 has a bearing surface 311. The optical sensing array 32, the circuit group 33, and the second light guides 34 are disposed on the transparent substrate 31. The optical sensing film 30 appears to be transparent to the naked eye.

[0097] The optical sensing array 32 can comprise a plurality of optical sensing structures 320. The distribution of the optical sensing structures 320 on the bearing surface 311 of the transparent substrate 31 is similar to that of the optical sensing structures 120 of the first embodiment, which will not be repeated here. In addition, each optical sensing structure 320 can be similar in structure, and for the sake of simplicity of the drawing, Figure 3 is taken as an example of an optical sensing structure 320.

[0098] As shown in Figure 3 , the optical sensing structure 320 can comprise an optical sensing member 321, a first light guide 322, and a plurality of first reflectors 323 stacked on the bearing surface 311 of the transparent substrate 31, and can further comprise an extended reflector 324. It should be noted that in this embodiment, the plurality of micro-structured first reflectors 323 help to increase the effective reflection ratio, for example, by using a multi-mask, a gray-scale mask, or controlling the exposure energy, etc. to make microstructures such as, but not limited to, rectangular or conical structures above the first light guide 322.

[0099] The optical sensing member 321 has a light sensing surface 3211. The light sensing surface 3211 faces away from the bearing surface 311 and is used to sense the ambient light intensity.

[0100] The first light guide 322 can be similar in material and characteristics to the first light guide 122 of the first embodiment, which will not be repeated here. The first light guide 322 is disposed on the optical sensing member 321. The first light guide 322 is located between the optical sensing member 321 and the first reflectors 323 and is transparent to light.

[0101] The first reflectors 323 can be similar to the first reflectors 123 of the first embodiment in material and properties, and will not be described again here. The first reflectors 323 can be arranged side by side on the first light guide 322 and located on the side of the optical sensing element 321 away from the bearing surface 311. Each first reflector 323 has a first front surface 3231, a first back surface 3232, and a first lateral surface 3233. The first front surface 3231 is located above the light sensing surface 3211. The first back surface 3232 is opposite to the first front surface 3231 and can be located between the first front surface 3231 and the light sensing surface 3211. The first lateral surface 3233 is located between the first front surface 3231 and the first back surface 3232.

[0102] The material of the extension reflector 324 can be similar or identical to that of the first reflector 323. The extension reflector 324 protrudes from the first back surface 3232 of the first reflector 323 and is located between the first back surface 3232 of the first reflector 323 and the bearing surface 311 of the transparent substrate 31.

[0103] According to the above structure, the extension reflector 324, the first back surface 3232 of the first reflector 323, and the bearing surface 311 of the transparent substrate 31 surround the optical sensing element 321 and the first light guide 322. Through such a configuration, light incident from the side of the transparent substrate 31 where the optical sensing array 32 is not arranged can be reflected by the extension reflector 324 and the first reflector 323 after passing through the transparent substrate 31 and the first light guide 322, and then incident onto the light sensing surface 3211 of the optical sensing element 321, thereby strengthening the light intensity signal sensed by the optical sensing element 321.

[0104] The circuit group 33 and the second light guide 34 are similar in structure and configuration to the circuit group 13 and the second light guide 14 of the first embodiment, respectively, and will not be described again here.

[0105] The length of the first front surface 3231 in the first direction D1 is a_1, the length of the first back surface 3232 in the first direction D1 is b_1, and the angle between the first lateral surface 3233 and the first back surface 3232 is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6 and 25 degrees ≤ θ_1 ≤ 65 degrees. The first direction D1 may, for example, be any direction in the plane formed by the X direction and the Y direction of the transparent substrate 31. Figure 15

[0106] By satisfying the above conditions, light incident from the side of the transparent substrate 31 where the optical sensing array 32 is arranged can be concentratedly reflected by the first reflector 323 after reaching the optical sensing array 32, thereby reducing the diffused condition.

[0107] Please refer to Figure 4 ​Fig. 4B is a schematic diagram illustrating a side cross-sectional view of an optical sensing film 40 according to a fourth embodiment of the present application. The optical sensing film 40 includes a transparent substrate 41, an optical sensing array 42, a circuit set 43, and a plurality of second light guides 44. The transparent substrate 41 has a bearing surface 411. The optical sensing array 42, the circuit set 43, and the second light guides 44 are disposed on the transparent substrate 41. The optical sensing film 40 appears optically transparent to the naked eye.

[0108] The optical sensing array 42 can include a plurality of optical sensing structures 420. The distribution of the optical sensing structures 420 on the bearing surface 411 of the transparent substrate 41 is similar to that of the optical sensing structures 120 of the first embodiment, and thus is not described again herein. In addition, each of the optical sensing structures 420 can be similar in structure, and thus only one of the optical sensing structures 420 is shown in Fig. 4B for simplicity of the drawing. Figure 4

[0109] As shown in Fig. 4B, the optical sensing structure 420 can include an optical sensing member 421, a first light guide 422, and a first reflector 423, which are disposed on the bearing surface 411 of the transparent substrate 41. Figure 4

[0110] The optical sensing member 421 has a light sensing surface 4211. The light sensing surface 4211 faces away from the bearing surface 411 and is used to sense the intensity of ambient light.

[0111] The first light guide 422 can be similar in material and properties to the first light guide 122 of the first embodiment, and thus is not described again herein. The first light guide 422 is disposed on the optical sensing member 421. The first light guide 422 is located between the optical sensing member 421 and the first reflector 423 and is optically transparent.

[0112] The first reflector 423 can be similar in material and properties to the first reflector 123 of the first embodiment, and thus is not described again herein. The first reflector 423 is disposed on the first light guide 422 and is located away from the bearing surface 411 of the optical sensing member 421. The first reflector 423 has a first front surface 4231, a first back surface 4232, and a first lateral surface 4233. The first front surface 4231 is located above the light sensing surface 4211. The first back surface 4232 faces away from the first front surface 4231 and can be located between the first front surface 4231 and the light sensing surface 4211. The first back surface 4232 can have an area greater than or equal to that of the light sensing surface 4211. The first lateral surface 4233 is located between the first front surface 4231 and the first back surface 4232.

[0113] ​​According to the above structure, the first back surface 4232 of the first reflector 423 is located on the side of the optical sensing member 421 away from the bearing surface 411. In combination with the design that the first back surface 4232 is equal to or greater than the photosensitive surface 4211 in area, the light incident from the side of the transparent substrate 41 where the optical sensing array 42 is not arranged can be reflected at the first back surface 4232 after passing through the first light guide 422, and then incident to the photosensitive surface 4211 of the optical sensing member 421, thereby strengthening the light intensity signal sensed by the optical sensing member 421.

[0114] The circuit group 43 and the second light guide 44 can be similar in structure and configuration to the circuit group 13 and the second light guide 14 of the first embodiment, respectively, and will not be described again here.

[0115] The length of the first front surface 4231 in the first direction D1 is a_1, the length of the first back surface 4232 in the first direction D1 is b_1, and the angle between the first outer side surface 4233 and the first back surface 4232 is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6 and 25 degrees ≤ θ_1 ≤ 65 degrees. The first direction D1 may, for example, be any direction in the plane formed by the X direction and the Y direction of the transparent substrate 41. Figure 15

[0116] By satisfying the above condition, the light incident from the side of the transparent substrate 41 where the optical sensing array 42 is arranged can be concentrated and reflected at the first reflector 423 after reaching the optical sensing array 42, thereby reducing the diffused condition.

[0117] Please refer to Figure 5 is a side view schematic diagram of an optical sensing film 50 according to the fifth embodiment of the present application. The optical sensing film 50 comprises a transparent substrate 51, an optical sensing array 52, a circuit group 53, a plurality of second light guides 54, and a plurality of second reflectors 55. The transparent substrate 51 has a bearing surface 511. The optical sensing array 52 and the circuit group 53 are arranged on the transparent substrate 51. The optical sensing film 50 presents a light-transmissive state in the naked eye vision.

[0118] The optical sensing array 52 comprises a plurality of optical sensing structures 520. The distribution of the optical sensing structures 520 on the bearing surface 511 of the transparent substrate 51 can be similar to the distribution of the optical sensing structures 120 of the first embodiment, which will not be described again here. Moreover, each optical sensing structure 520 can be similar in structure, and for the sake of simplicity of the drawing, Figure 5 one optical sensing structure 520 is taken as an example in the drawing.

[0119] As shown in Figure 5 , the optical sensing structure 520 can comprise an optical sensing member 521, a first light guide 522, and a first reflector 523 arranged on the bearing surface 511 of the transparent substrate 51.​

[0120] The first reflector 523 has a first front surface 5231, a first back surface 5232, a first outer side surface 5233, and a first inner side surface 5234.

[0121] The optical sensing structure 520 can be similar in structure and configuration to the optical sensing structure 120 of the first embodiment, and thus some details such as the structure and configuration of the first light guide 522 and the first reflector 523 will be omitted.

[0122] The line groups 53 can be disposed near the optical sensing array 52. Each line group 53 can include at least one line, such as the first line 531 and the second line 532. The first line 531 and the second line 532 can be, for example, metal or alloy materials that can reflect light. The first line 531 can be disposed in the transparent substrate 51. The second line 532 can be disposed on the bearing surface 511 of the transparent substrate 51. Each first line 531 and second line 532 can be similar in structure, and thus only one first line 531 and one second line 532 will be shown in the drawings for simplicity, Figure 5 The first line 531 and the second line 532 can be electrically connected to the optical sensing member 521 through the gate G to transmit the light intensity signal sensed by the optical sensing member 521.

[0123] The first line 531 and the second line 532 can be electrically connected to the optical sensing member 521 through the gate G to transmit the light intensity signal sensed by the optical sensing member 521.

[0124] The second light guide 54 can be similar in material and characteristics to the second light guide 14 of the first embodiment, and thus will not be described again. The second light guide 54 is disposed on the bearing surface 511 of the transparent substrate 51 and corresponds to the first line 531 and the second line 532. The second light guide 54 is located between the first line 531 and the second reflector 55 and between the second line 532 and the second reflector 55. The second light guide 54 can be light-transmissive.

[0125] The second reflector 55 is disposed on the second light guide 54 and corresponds to one side of the first line 531 and the second line 532. Each second reflector 55 has a second front surface 551, a second back surface 552, and a second outer side surface 553. The second front surface 551 is located on the side of the second reflector 55 away from the bearing surface 511. The second back surface 552 faces away from the second front surface 551 and can be located between the second front surface 551 and the first line 531 and between the second front surface 551 and the second line 532. The second outer side surface 553 is located between the second front surface 551 and the second back surface 552. In addition, the second reflector 55 can be formed in the same manufacturing process as the first reflector 523, thereby saving the manufacturing time of the optical sensing film 50.

[0126] The length of the first front surface 5231 in the first direction D1 is a_1, the length of the first back surface 5232 in the first direction D1 is b_1, and the angle between the first outer side surface 5233 and the first back surface 5232 is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6 and 25 degrees ≤ θ_1 ≤ 65 degrees. The first direction D1 may, for example, be any direction in the plane formed by the X direction and the Y direction of Figure 15 .

[0127] The length of the second front surface 551 in the second direction D2 is a_2, the length of the second back surface 552 in the second direction D2 is b_2, and the angle between the second outer side surface 553 and the second back surface 552 is θ_2, which satisfies the following conditions: 0 < a_2 / b_2 ≤ 0.6 and 25 degrees ≤ θ_2 ≤ 65 degrees. The second direction D2 may, for example, be any direction in the plane formed by the X direction and the Y direction of Figure 15 , or the same direction as the first direction D1, as shown in Figure 5 .

[0128] By satisfying the above conditions, light rays incident from the side of the transparent substrate 51 on which the optical sensing array 52 is disposed are reflected by the first reflective body 523 and the second reflective body 55 after reaching the optical sensing array 52 and the second reflective body 55, thereby reducing the diffusion of light.

[0129] The width of one side of the first line 531 and the second line 532 in the normal direction Z of the bearing surface 511 is a_w, the width of the other side of the first line 531 and the second line 532 in the normal direction Z of the bearing surface 511 is b_w, and the angle between the side surface of the first line 531 and the second line 532 and the bearing surface 511 is θ_w, which satisfies the following conditions: 0 < a_w / b_w ≤ 0.6 and 25 degrees ≤ θ_w ≤ 65 degrees.

[0130] By satisfying the above conditions, light rays incident from the side of the transparent substrate 51 on which the optical sensing array 52 is disposed are reflected by the first line 531 and the second line 532 on the respective one side of the lines after reaching the line group 53, thereby reducing the diffusion of light.

[0131] Please refer to Figure 6 , which is a schematic side cross-sectional view of an optical sensing film 60 according to a sixth embodiment of the present application. The optical sensing film 60 comprises a transparent substrate 61, an optical sensing array 62, a line group 63, a plurality of second light guides 64, and a plurality of second reflective bodies 65. The transparent substrate 61 has a bearing surface 611. The optical sensing array 62 and the line group 63 are disposed on the transparent substrate 61. The optical sensing film 60 appears optically transparent to the naked eye.

[0132] The optical sensing array 62 can include a plurality of optical sensing structures 620. The distribution of the optical sensing structures 620 on the bearing surface 611 of the transparent substrate 61 can be similar to that of the optical sensing structures 120 of the first embodiment, which will not be described again here. Moreover, each of the optical sensing structures 620 can be similar in structure, and for the sake of simplicity of the drawings, Figure 6 An optical sensing structure 620 is taken as an example for illustration.

[0133] As shown in FIG. 6A, the optical sensing structure 620 can include an optical sensing element 621, a first light guide 622, and a first reflector 623 stacked on the bearing surface 611 of the transparent substrate 61. Figure 6

[0134] The first reflector 623 has a first front surface 6231, a first back surface 6232, a first outer lateral surface 6233, and a first inner lateral surface 6234.

[0135] The optical sensing structure 620 can be similar in structure and configuration to the optical sensing structure 120 of the first embodiment, and thus some details such as the structure and configuration of the first light guide 622 and the first reflector 623 will be omitted.

[0136] The circuit group 63 can be disposed near the optical sensing array 62 correspondingly. Each of the circuit groups 63 can include at least one circuit, such as a first circuit 631 and a second circuit 632. The first circuit 631 and the second circuit 632 can be, for example, metal or alloy materials, and can reflect light. The first circuit 631 can be disposed in the transparent substrate 61. The second circuit 632 can be disposed on the bearing surface 611 of the transparent substrate 61. Each of the first circuit 631 and the second circuit 632 can be similar in structure, and for the sake of simplicity of the drawings, Figure 6 A first circuit 631 and a second circuit 632 are taken as an example for illustration.

[0137] The first circuit 631 and the second circuit 632 can electrically connect the optical sensing element 621 through the gate G to transmit the light intensity signal sensed by the optical sensing element 621.

[0138] The second light guide 64 can be similar in material and characteristics to the second light guide 14 of the first embodiment, which will not be described again here. The second light guide 64 is disposed on the bearing surface 611 of the transparent substrate 61 and corresponds to the first circuit 631 and the second circuit 632. The second light guide 64 is located between the first circuit 631 and the second reflector 65 and between the second circuit 632 and the second reflector 65 and can be light-transmissive.

[0139] ​The second reflectors 65 are disposed on the second light guides 64 and correspondingly located at one side of the first lines 631 and the second lines 632. Each of the second reflectors 65 has a second front face 651, a second back face 652, a second outer side face 653, and a second inner side face 654. The second front face 651 is located at a side of the second reflector 65 away from the bearing surface 611. The second back face 652 is opposite to the second front face 651 and can be substantially flush with the bearing surface 611. The second outer side face 653 is located between the second front face 651 and the second back face 652. The second inner side face 654 is recessed from the second back face 652 to the second front face 651 and forms a recess RC to accommodate one of the second lines 632.

[0140] The length of the first front face 6231 in the first direction D1 is a_1, the length of the first back face 6232 in the first direction D1 is b_1, and the angle between the first outer side face 6233 and the first back face 6232 is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6 and 25 degrees ≤ θ_1 ≤ 65 degrees. The first direction D1 can be, for example, any direction on the plane formed by the X direction and the Y direction of Figure 15 the first reflector 623.

[0141] The length of the second front face 651 in the second direction D2 is a_2, the length of the second back face 652 in the second direction D2 is b_2, and the angle between the second outer side face 653 and the second back face 652 is θ_2, which satisfies the following conditions: 0 < a_2 / b_2 ≤ 0.6 and 25 degrees ≤ θ_2 ≤ 65 degrees. The second direction D2 can be, for example, any direction on the plane formed by the X direction and the Y direction of Figure 15 the second reflector 65, or the same direction as the first direction D1, as shown in Figure 6 .

[0142] By satisfying the above conditions, the light rays incident from the side of the transparent substrate 61 where the optical sensing array 62 is disposed are reflected by the first reflector 623 and the second reflector 65 after reaching the first reflector 623 and the second reflector 65, thereby reducing the diffusion of light.

[0143] Please note that because the second reflectors 65 are designed to have the second inner side faces 654 facing the line group 63, the first lines 631 and the second lines 632 can not necessarily have the shape as the first lines 531 and the second lines 532 in the fifth embodiment, but the present application is not limited thereto. In some embodiments, even if the second reflectors are designed to have the second inner side faces facing the line group, the first lines and the second lines can have the shape as the first lines 531 and the second lines 532 in the fifth embodiment.

[0144] Please refer to Figure 7Fig. 7 is a schematic diagram illustrating a side cross-sectional view of an optical sensing film 70 according to the seventh embodiment of the present application. The optical sensing film 70 includes a transparent substrate 71, an optical sensing array 72, a line group 73, and a plurality of second light guides 74. The transparent substrate 71 has a carrying surface 711. The optical sensing array 72 and the line group 73 are disposed on the transparent substrate 71. The optical sensing film 70 appears optically transparent to the naked eye.

[0145] The optical sensing array 72 includes a plurality of optical sensing structures 720. The distribution of the optical sensing structures 720 on the carrying surface 711 of the transparent substrate 71 can be similar to that of the optical sensing structures 120 of the first embodiment, and thus will not be described again here. In addition, each optical sensing structure 720 can be similar in structure, and thus only one optical sensing structure 720 will be described below as an example. Figure 7

[0146] As shown in Fig. 7, the optical sensing structure 720 can include an optical sensing member 721, a first light guide 722, and a first reflecting body 723 stacked on the carrying surface 711 of the transparent substrate 71. Figure 7

[0147] The first reflecting body 723 has a first front surface 7231, a first back surface 7232, a first outer lateral surface 7233, and a first inner lateral surface 7234. In addition, the gate G can serve as the first reflecting body 723 and be disposed on one side of the optical sensing member 721, thus being different from the gate G in the first embodiment.

[0148] The optical sensing structure 720 can be similar in structure and configuration to the optical sensing structure 120 of the first embodiment, and thus some details such as the structure and configuration of the first light guide 722 and the first reflecting body 723 will be omitted.

[0149] The line group 73 can be disposed near the optical sensing array 72 correspondingly. Each line group 73 can include at least one line, such as a first line 731 and a second line 732. The first line 731 and the second line 732 are, for example, metal or alloy materials, and can reflect light. The first line 731 can be disposed on one side of the transparent substrate 71 and located on one of the second light guides 74. The second line 732 can be disposed on the carrying surface 711 of the transparent substrate 71. Each first line 731 and second line 732 can be similar in structure, and thus only one first line 731 and one second line 732 will be described below as an example. Figure 7

[0150] The first line 731 and the second line 732 can be electrically connected to the optical sensing member 721 through the gate G serving as the first reflecting body 723 to transmit the light intensity signal sensed by the optical sensing member 721. ​​​

[0151] The second light guide 74 can be similar in material and properties to the second light guide 14 of the first embodiment, and will not be described again here. The second light guide 74 is disposed on the carrying surface 711 of the transparent substrate 71 and corresponds to the first line 731 and the second line 732. The second light guide 74 is located between the first line 731 and the transparent substrate 71 and on the carrying surface 711 of the transparent substrate 71. The second light guide 74 can be light-transmissive.

[0152] The length of the first front surface 7231 in the first direction D1 is a_1, the length of the first back surface 7232 in the first direction D1 is b_1, and the angle between the first outer surface 7233 and the first back surface 7232 is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6 and 25 degrees ≤ θ_1 ≤ 65 degrees. The first direction D1 may, for example, be any direction in the plane formed by the X direction and the Y direction of Figure 15

[0153] The width of one side of the first line 731 and the second line 732 in the normal direction Z of the carrying surface 711 is a_w, the width of the other side of the first line 731 and the second line 732 in the normal direction Z of the carrying surface 711 is b_w, and the angle between the side surface of the first line 731 and the second line 732 and the carrying surface 711 is θ_w, which satisfies the following conditions: 0 < a_w / b_w ≤ 0.6 and 25 degrees ≤ θ_w ≤ 65 degrees.

[0154] By satisfying the above conditions, the light rays incident from the side of the transparent substrate 71 on which the optical sensing array 72 is disposed can be reflected by the first reflecting body 723, the first line 731, and / or the second line 732 after reaching the optical sensing array 72 and / or the line group 73, thereby reducing the diffusion of light.

[0155] Next, please refer to Figures 8 to 9 , wherein Figure 8 is the simulation of the imaging light path performed for the optical sensing film 801a of an embodiment of the present application, and Figure 9 is the simulated imaging position distribution map of Figure 8 .

[0156] Figure 8 The structure shown inmay be the optical sensing structure, the line group, or the second reflecting body of the optical sensing film 801a, and only the outer profile of the structure is shown for the sake of clarity in representing the simulation of the imaging light path, and the remaining details are omitted.

[0157] Figure 8The structure shown satisfies the following conditions: a / b is greater than 0 and θ = 41.6 degrees, where a can be a_1, a_2, or a_w as mentioned above, b can be b_1, b_2, or b_w as mentioned above, and θ can be θ_1, θ_2, or θ_w as mentioned above. Please note that even if... Figure 8 Since the structure is made into a tip, the dimension of 'a' will still have a certain length in reality, so a / b will be greater than 0.

[0158] Figure 8 A line segment marked 0 can be parallel to the aforementioned normal direction Z, which is defined, for example, by the center of the detector DT. Figure 8 As shown, the incident ray L_in is reflected into an outgoing ray L_out, which lies to the right of the line segment marked 0. See also... Figure 9 As shown in the simulated imaging location distribution map, the area to the right of the line segment marked 0 corresponds to... Figure 9 The positive region of the X-axis is defined as the effective reflected light, meaning that the reflected light (outgoing light L_out) can enter the effective visible area of ​​the human eye, and therefore the diffusion is not severe. As a result, when viewing the optical sensing film 801a directly, more outgoing light L_out can be received, and a better image can be perceived.

[0159] Next, please refer to Figures 10 to 11 ,in Figure 10 This is an imaging ray path simulation performed on the optical sensing film 801b according to another embodiment of the present invention, and Figure 11 yes Figure 10 The simulated imaging location distribution map.

[0160] Figure 10 The structure shown may be the optical sensing structure of the optical sensing film 801b, a circuit group, or a second reflector. Only the outline of the structure is shown in order to clearly represent the simulation of the imaging light path, and other details are omitted.

[0161] Figure 10 The structure shown in the figure satisfies the following conditions: a / b = 0.33 and θ = 53.13 degrees, where a can be the aforementioned a_1, a_2 or a_w, b can be the aforementioned b_1, b_2 or b_w, and θ can be the aforementioned θ_1, θ_2 or θ_w.

[0162] Figure 10 A line segment marked 0 can be parallel to the aforementioned normal direction Z, which is defined, for example, by the center of the detector DT. Figure 10 As shown, the incident ray L_in is reflected into an outgoing ray L_out and a spillover ray L_diff. The outgoing ray L_out is located to the right of the line segment marked 0. (See also...) Figure 11As shown in the simulated imaging location distribution map, the area to the right of the line segment marked 0 corresponds to... Figure 11 The positive X-axis region is defined as the region of effectively reflected light, which can be seen by the human eye. Spilled rays L_diff are located to the left of the line segment marked 0, and can also be referenced... Figure 11 As shown in the simulated imaging location distribution map, the area to the left of the line segment marked as 0 corresponds to... Figure 11 The negative X-axis region is defined as spill light, which is not easily seen by the human eye. The total amount of spill light L_diff is small and has not yet caused severe diffusion. As a result, when viewing the optical sensor film 801b directly, enough outgoing light L_out can still be received, and a sufficiently clear image can be perceived.

[0163] Next, please refer to Figures 12 to 13 ,in Figure 12 This is an imaging ray path simulation performed on a control film, and Figure 13 yes Figure 12 The simulated imaging location distribution map.

[0164] Figure 12 The structure shown may be a fine structure on a membrane that is not part of this invention, which satisfies the following conditions: a / b = 0.67 and θ = 69.4 degrees, where a can be understood to correspond to the aforementioned a_1, a_2 or a_w, b can be understood to correspond to the aforementioned b_1, b_2 or b_w, and θ can be understood to correspond to the aforementioned θ_1, θ_2 or θ_w.

[0165] Figure 12 Line segments marked 0 can be parallel to the normal direction of the membrane, for example, defined by the center of the detector DT. Figure 12 As shown, the incident ray L_in is largely reflected into spillover rays L_diff. The spillover rays L_diff are located to the left of the line segment marked 0, and can also be seen by referring to... Figure 13 As shown in the simulated imaging location distribution map, the area to the left of the line segment marked as 0 corresponds to... Figure 13 The negative X-axis region is defined as stray light, meaning it is difficult for the human eye to see, resulting in poor imaging. Therefore, when viewing a membrane not belonging to this invention directly, it is difficult to receive enough light to obtain a clear image.

[0166] Please refer to Figure 14 This is a side cross-sectional schematic diagram of the optical sensing film according to the eighth embodiment of the present invention.

[0167] The optical sensing film 80 comprises a transparent substrate 81, an optical sensing array 82, a circuit set 83, and a second light guide 84. It is noted that the transparent substrate 81, the optical sensing array 82, the circuit set 83, and the second light guide 84 can be similar to any one of the transparent substrates 11-71, any one of the optical sensing arrays 12-72, any one of the circuit sets 13-73, and any one of the second light guides 14-74 of the aforementioned embodiments, respectively, Figure 14 In the present embodiment, the optical sensing structure 820 of the optical sensing array 82 is exemplified as one, but the present application is not limited thereto. Figure 14 In the present embodiment, the optical sensing structure 820 of the optical sensing array 82 is exemplified as one, but the present application is not limited thereto.

[0168] In the present embodiment, the optical sensing film 80 can further comprise a plurality of layered structures 88. The layered structures 88 can be light-transmissive and disposed on a side of the optical sensing structure 820 away from the transparent substrate 81. The layered structures 88 can comprise, for example, an optical clear adhesive (OCA) layer 881, a diffusion film layer 882, and / or a protective film 883. The OCA layer 881 can facilitate the adhesion of the layered structures 88 to the optical sensing structure 820 and the second light guide 84. The diffusion film layer 882 has a plate body 882a and a plurality of diffusion particles 882b. The plate body 882a is adhered to the OCA layer 881. The plate body 882a can be made of, for example, polyethylene terephthalate (PET). The diffusion particles 882b are disposed on the plate body 882a. The diffusion particles 882b can further reflect light to form a diffuse reflection, thereby homogenizing the intensity distribution of the projection light source. The protective film 883 is disposed on a side of the diffusion particles 882b away from the OCA layer 881. The protective film 883 can protect other stacked structures of the optical sensing film 80.

[0169] The optical sensing film 80 can further comprise an adhesive layer 89. The adhesive layer 89 can be, for example, an electrostatic film. The adhesive layer 89 can be light-transmissive and disposed on a side of the transparent substrate 81 not provided with the optical sensing structure 820 and the second light guide 84. The adhesive layer 89 can facilitate the attachment of the optical sensing film 80 to an environment in which it is to be used (e.g., a front window of an automobile) to facilitate the provision of relevant information to a user.

[0170] In the present embodiment or another embodiment of the present application, the optical sensing film 80 can further comprise a plurality of reflective structures 86. The reflective structures 86 are disposed on the bearing surface 811 of the transparent substrate 81 and can be, for example, located on the same side as the optical sensing structure 820.

[0171] The length of the reflective structure 86 in the first direction D1 on the side away from the transparent substrate 81 is a_r, the length of the reflective structure 86 in the first direction D1 on the side close to the transparent substrate 81 is b_r, and the angle between the side of the reflective structure 86 and the bearing surface 811 is θ_r, which satisfies the following conditions: 0 < a_r / b_r ≤ 0.6; and 25 degrees ≤ θ_r ≤ 65 degrees.

[0172] By satisfying the above conditions, the reflective structure 86 capable of concentrating reflection can be arranged at a position where the optical sensing array 82, the line group 83, and the second light guide 84 are not arranged, thereby further reducing the diffused light.

[0173] It is noted that in the present embodiment, the lines of the line group 83 can also be simply square in appearance (such as the appearance of the first line 631 and the second line 632 of the sixth embodiment) under the premise that sufficient reflective structures 86 are arranged, and the present application is not limited in this regard.

[0174] Reference is made to Figure 15 is a schematic diagram of an optical display system 1 according to a ninth embodiment of the present application. The optical display system 1 can include an optical sensing film 90, a driver 2, a projector 3, and a controller 4.

[0175] The optical sensing film 90 can be any one of the optical sensing films 10-80 of the first to eighth embodiments described above, and in the present embodiment, the optical sensing film 10 of the first embodiment is taken as an example. The driver 2 can be communicatively connected to the line group 93 of the optical sensing film 90. It is noted that the line group 93 is similar to any one of the line groups 13-83 of the foregoing embodiments, and will not be described again here. The projector 3 is directed towards the optical sensing film 90 to project light to form an image on the optical sensing film 90. The controller 4 can be, for example, a computer. The controller 4 is communicatively connected to the projector 3 and to the line group 93 of the optical sensing film 90 through the driver 2. It is noted that the driver 2 is an optional element, and the controller 4 can also be directly communicatively connected to the line group 93 of the optical sensing film 90.

[0176] The controller 4 obtains a plurality of intensity values of ambient light sensed by a plurality of optical sensing structures 920 of the optical sensing array 92 through the line group 93. It is noted that the optical sensing array 92 is similar to any one of the optical sensing arrays 12-82 of the foregoing embodiments, and will not be described again here. The controller 4 can adjust the optical characteristics of the projection light emitted by the projector 3, such as the intensity or contrast of the light, according to these intensity values. Specifically, for example, the LCR range most suitable for the human eye is adjusted, where LCR = bright state luminance / dark state luminance, and 1.5 ≤ LCR ≤ 1.7 is the optimal image contrast for the human eye to view.

[0177] For example, as Figure 15The middle optical sensing film 90 receives light rays from the flashlight FL locally shining from the back. The optical sensing structure 920 located there senses a higher light intensity value. The controller 4 can instruct the projector 3 to emit brighter projection light at the location according to the higher light intensity value, so that a user viewing the optical sensing film 90 from the same side as the projector 3 can see a clear image. In some embodiments, the controller can also adjust the contrast or color of the projection light, for example.

[0178] Moreover, due to the structural configuration of the optical sensing film 90, the signal of the light intensity sensed by the optical sensing structure 920 can be enhanced, so that the light intensity value acquired by the controller 4 can be more accurate, and accurate regulation can be made.

[0179] Please note Figure 15 The optical sensing structure 920 appearing circular when viewed from the normal direction Z is not intended to limit the present application. In some embodiments, the optical sensing structure viewed from the sensing direction can also appear elliptical, square, triangular, polygonal, irregular, or the like.

[0180] The optical sensing structure, the optical sensing film, and the optical display system according to the above embodiments can cause light rays incident from the side of the transparent substrate where the optical sensing array is disposed to be reflected after reaching the optical sensing film, can reduce the diffusion situation, and can provide more outgoing light rays, improving the imaging quality.

[0181] Furthermore, the optical display system can adaptively adjust the optical characteristics of the projection light emitted by the projector according to the intensity value of the ambient light sensed by the optical sensing structure, for obtaining a clear image on the optical sensing film. Due to the structural configuration of the optical sensing structure, the signal of the light intensity sensed by the optical sensing structure can be enhanced, so that the light intensity value acquired by the controller can be more accurate, and accurate regulation can be made.

[0182] It is worth noting that the communication connection mentioned herein refers to a connection mode in which two elements exchange signals with each other in a wired or wireless manner.

Claims

1. An optical sensing structure, characterized in that, The optical sensing structure includes: An optical sensing element having a photosensitive surface for sensing the ambient light intensity; and At least one first reflector located on one side of the optical sensing element. The at least one first reflector has a first front surface, a first back surface, and a first outer side surface. The first front surface is above the photosensitive surface, the first back surface faces away from the first front surface, and the first outer side surface is between the first front surface and the first back surface; Wherein, the length of the first front surface in the first direction is a_1, the length of the first back surface in the first direction is b_1, and the included angle between the first outer side surface and the first back surface is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6; and 25 degrees ≤ θ_1 ≤ 65 degrees.

2. The optical sensing structure as described in claim 1, characterized in that, The at least one first reflector further has a first inner side surface that is recessed from the first back surface toward the first front surface and surrounds the optical sensing element.

3. The optical sensing structure as described in claim 1, characterized in that, The optical sensing structure further includes an extended reflector. The first back surface is between the first front surface and the optical sensing element. The extended reflector protrudes from the first back surface of the at least one first reflector and surrounds the optical sensing element with the first back surface.

4. The optical sensing structure as described in claim 3, characterized in that, The number of the at least one first reflector is multiple, and these first reflectors are arranged in parallel, and the first back surfaces of these first reflectors are between the first front surfaces and the optical sensing element.

5. The optical sensing structure as described in claim 1, characterized in that, The optical sensing structure further includes a first light guide. The first light guide is disposed on the optical sensing element or between the optical sensing element and the at least one first reflector. The at least one first reflector is disposed on the first light guide on one side of the optical sensing element. The first back surface is between the first front surface and the photosensitive surface, and the first light guide is light transmissive.

6. The optical sensing structure as described in claim 5, characterized in that, The area of the first back surface is greater than or equal to the area of the photosensitive surface.

7. An optical sensing film, characterized in that, The optical sensing film includes: A transparent substrate having a bearing surface; An optical sensing array disposed on the transparent substrate or on the bearing surface of the transparent substrate. The optical sensing array includes a plurality of optical sensing structures, and each optical sensing structure includes: An optical sensing element disposed on the bearing surface of the transparent substrate. The optical sensing element has a photosensitive surface that faces away from the bearing surface and is used to sense the ambient light intensity; And At least one first reflector located on one side of the optical sensing element. The at least one first reflector has a first front surface, a first back surface, and a first outer side surface. The first front surface is above the photosensitive surface, the first back surface faces away from the first front surface, and the first outer side surface is between the first front surface and the first back surface; And At least one circuit disposed on the transparent substrate and electrically connected to these optical sensing elements; Wherein, the length of the first front surface in the first direction is a_1, the length of the first back surface in the first direction is b_1, and the included angle between the first outer side surface and the first back surface is θ_1, which satisfies the following conditions: 0 < a_1 / b_1 ≤ 0.6; and 25 degrees ≤ θ_1 ≤ 65 degrees.

8. The optical sensing film as described in claim 7, characterized in that, The at least one first reflector further has a first inner side surface that is recessed from the first back surface toward the first front surface and surrounds the optical sensing element with the bearing surface.

9. The optical sensing film as claimed in claim 7, characterized in that, The first back surface is located between the first front surface and the photosensitive surface. Each of the optical sensing structures further includes an extended reflector, which is connected between the first back surface and the carrier surface, and the extended reflector, the first back surface and the carrier surface surround the optical sensing element.

10. The optical sensing film as claimed in claim 9, characterized in that, The number of the at least one first reflector is plural, and these first reflectors are arranged side by side, and the first back surfaces of these first reflectors are located between these first front surfaces and the optical sensing element.

11. The optical sensing film as claimed in claim 7, characterized in that, Each of the optical sensing structures further includes a first light guide, which is disposed on the optical sensing element or between the optical sensing element and the at least one first reflector. The at least one first reflector is disposed on the first light guide and on the side of the optical sensing element away from the carrier surface. The first back surface is located between the first front surface and the photosensitive surface, and the first light guide is light transmissive.

12. The optical sensing film as claimed in claim 11, characterized in that, The area of the first back surface is greater than or equal to the area of the photosensitive surface.

13. The optical sensing film as claimed in claim 7, characterized in that, The width of one side of the at least one circuit in the normal direction of the carrier surface is a_w, and the width of the other side of the at least one circuit in the normal direction of the carrier surface is b_w. The included angle of the side surface of the at least one circuit with respect to the carrier surface is θ_w, which satisfies the following conditions: 0 < a_w / b_w ≤ 0.6; and 25 degrees ≤ θ_w ≤ 65 degrees.

14. The optical sensing film as claimed in claim 7, characterized in that, The optical sensing film further includes at least one second reflector, which is disposed on one side of the at least one circuit. The at least one second reflector has a second front surface, a second back surface and a second outer side surface. The second front surface is on the side of the at least one second reflector away from the carrier surface. The second back surface faces away from the second front surface, and the second outer side surface is between the second front surface and the second back surface; Wherein, the length of the second front surface in the second direction is a_2, the length of the second back surface in the second direction is b_2, and the included angle between the second outer side surface and the second back surface is θ_2, which satisfies the following conditions: 0 < a_2 / b_2 ≤ 0.6; and 25 degrees ≤ θ_2 ≤ 65 degrees.

15. The optical sensing film as claimed in claim 14, characterized in that, The at least one second reflector further has a second inner side surface, which is recessed from the second back surface towards the second front surface, and the second inner side surface faces the at least one circuit.

16. The optical sensing film as claimed in claim 14, characterized in that, The optical sensing film further includes at least one second light guide, which is disposed on the carrier surface. The at least one second reflector is disposed on the at least one second light guide and on one side of the at least one circuit. The second back surface is between the second front surface and the at least one circuit, and the at least one second light guide is light transmissive.

17. The optical sensing film as claimed in claim 7, characterized in that, The at least one circuit is located on the carrier surface of the transparent substrate or within the transparent substrate.

18. The optical sensing film as claimed in claim 7, characterized in that, The optical sensing film further includes: At least one layered structure, which is light transmissive and disposed on the side of these optical sensing structures away from the transparent substrate; and An adhesive layer, which is light transmissive and disposed on the side of the transparent substrate where the at least one layered structure is not provided.

19. The optical sensing film as claimed in claim 18, characterized in that, The optical sensing film further includes: At least one reflection structure, which is disposed on the carrier surface of the transparent substrate; Wherein, the length of the at least one reflection structure on the side away from the transparent substrate in the first direction is a_r, the length of the at least one reflection structure on the side close to the transparent substrate in the first direction is b_r, and the included angle of the side surface of the at least one reflection structure relative to the bearing surface is θ_r, which satisfies the following conditions: 0 < a_r / b_r ≤ 0.6; and 25 degrees ≤ θ_r ≤ 65 degrees.

20. An optical display system, characterized in that, The optical display system includes: The optical sensing film according to claim 7; A projector facing the optical sensing film; and A controller communicatively connected to the at least one line and the projector, wherein the controller is configured to obtain multiple intensity values of ambient light sensed by the optical sensing array through the at least one line, and the controller adjusts the optical characteristics of the projection light emitted by the projector according to the intensity values.

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